比利时专利BE1026041B1 TWO STAGES, DROP-IN-TRIGGER ASSEMBLY

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专利摘要:
The present invention provides a trigger unit for a firearm, the firearm having a breech housing, a safety lever and a hammer. The trigger unit has a trigger with an axis of rotation, a front hook designed and arranged to move with a rotational movement of the trigger, a rear hook arranged in cooperation with the front hook, and one between the front hook and the rear hook arranged spring. The front hook and trigger are constructed and arranged relative to the safety lever and relative to the hammer to allow the hammer to be cocked from an upright position when the safety lever is in a "safe" position. This special design provides a fume cupboard that is constructed and arranged as a two-stage drop-in fume cupboard that conforms to the European standard for an M4 / M16 (AR) platform.
公开号:BE1026041B1
申请号:E20195111
申请日:2019-02-20
公开日:2020-05-25
发明作者:Douglas Olson；Joe Beitelspacher
申请人:Krl Holding Company Inc；
IPC主号:

专利说明:

BE2019 / 5111 TWO STAGES, DROP-IN-TRIGGER ASSEMBLY
Reference to Related Applications This application claims priority from U.S. Provisional Application No. 62/632590, filed on February 20, 2018, which is incorporated herein by reference.
Background The present disclosure generally relates to firearms. In particular, the present disclosure describes and explains the construction and use of a two-stage drop-in trigger unit for M4 / M16 (AR) firearms that conforms to the standard described herein as a European standard.
The European standard, as used here, requires that the safety lever must allow the selection of a safe position when the hammer is in the upright or fired state. This upright condition of the hammer is also described herein as an upright / forward position. In this position, it is desirable that the bolt carrier can be fully retracted to tension the hammer without damaging any components of the trigger unit. The European standard requires a trigger unit design that differs from the designs normally made for M4 / M16 (AR) firearms made in the USA.
A conventional trigger unit design required the hammer to hold the trigger depressed when the hammer was in the upright position. This design effectively prevents the safety lever from being turned to the safe position. This conventional design is common for M4 / M16 (AR) platform rifles made in the USA. Newer conventional designs of trigger units allow the safety lever to be placed on the
BE2019 / 5111
Position Set safely when the hammer is in an upright position. However, it is important that these fume cupboard designs are one-step and not adjustable.
To enable conformity of a two-stage trigger unit for the AR platform rifle with the European standard, the safety lever must be capable of being placed in the safe position when the hammer is in the forward Z upright (fired) position. The present disclosure relates to a novel and non-obvious two-stage drop-in fume cupboard that conforms to and conforms to the European standard. In connection with the present description, the mentioned drop-in type of the trigger unit is also described as a non-adjustable type of the trigger unit.
[006] As a further background of the present disclosure, the field of the present disclosure includes trigger units for AR platform rifles. There are two basic design classes, a one-step and a two-step class. Each of these construction classes is further divided into adjustable and non-adjustable subclasses.
A single-stage trigger unit has a catch pawl groove, which is located below the hammer axis of rotation. The radius to the hammer release point is typically about 0.30 inches (7.62 mm) from the hammer axis of rotation. The hammer spring exerts a torque on the hammer, which develops a relatively high force at this radius. Therefore, the single-stage trigger unit is characterized by a long trigger actuation path, which requires considerable pressure on the trigger to fire the weapon. This trigger actuation path is typically characterized by several start and stop conditions that occur while the trigger is being moved along an arcuate path, commonly referred to as creep.
BE2019 / 5111 There is a subclass of single stage trigger units known as adjustable single stage trigger units which provides a method of reducing the amount of pawl engagement by some type of block operated by a firearm user (ie a shooter) or a gunsmith is adjustable. This leads to a shorter trigger actuation path, but typically without reducing the trigger pressure required to fire the firearm. The hammer has a cam that keeps the trigger rotated when the hammer is in the upright or fired position. This effectively prevents the locking lever from rotating into the safe position.
A two-stage trigger unit has a construction in which the catch surface on the hammer is displaced to an overhanging approach, which is typically within a radius of about 0.77 inches (1.96 cm) from the hammer's axis of rotation. If the same hammer spring is used in the two-stage construction as is used in the one-stage construction, a lower spring force develops. In particular, the force developed on the catch surface is 0.3 / 0.77 or approximately 39% of the force of a typical single stage trigger unit.
A lesser force on the catch pawl surface reduces the degree or amount of friction required to separate the hammer catch pawl surface from the trigger catch pawl surface, requiring less trigger pressure to fire the weapon. The interrupter (also referred to as the rear hook) for a two-stage trigger unit receives a second task. This rear hook is caused to abut the back of the overhanging neck of the hammer just prior to the release of the hammer. This is felt to be a second stage of trigger actuation, which slightly increases the trigger pressure that must be applied to the trigger to release the hammer.
Since only a very small movement of the trigger is required to carry out this movement, the user of the firearm (i.e. the shooter) can use a4
BE2019 / 5111 pull the trigger into the second stage and hold it there until the shooter is ready to fire the weapon, which enables a more precise location at the time of firing. There is a sub-class, which is an adjustable two-stage trigger unit, in which the shooter or his gunsmith can adjust a certain set of parts to achieve an even more precise degree of engagement in the second stage.
[012] It would be an improvement on the current state of the art of two-stage drop-in fume cupboards if these designs could be made to conform to the European standard. This compliance requires that the design enable the safety lever to be brought into the safe position when the hammer is in the forward upright (fired) position.
Brief Description of the Invention The present invention relates generally to trigger units for M4 / M16 (AR) platform firearms. In particular, the present invention relates generally to two-stage drop-in fume cupboards that conform to the European standard. As described herein, the European standard specifies that the safety lever can be placed in the safe position when the hammer is in the upright or fired state.
[014] A starting point for the conceptual and design work that led to the construction of the present invention was to consider the design and components of previous designs related to a BURST military trigger unit. In the course of this earlier design work, it was learned that removing the BURST actuator provides a place or location for installing a front hook for connection to a new hammer. The new hammer construction included an overhanging approach with a new catch surface. The front hook
BE2019 / 5111 was offset from the center of the trigger and required an overhanging section for sufficient pawl engagement area.
According to this earlier design work, it was contemplated that the design of the front hook could be changed so that it could rotate just enough to allow the hammer to move the front hook of the trigger unit out of the way. This in turn would allow the hammer to be re-tensioned if the rotary movement of the trigger were impaired by placing the safety lever in the safe state.
As a further aspect of the present invention, the trigger unit is constructed and arranged such that the trigger does not have to be pressed when the hammer is in the upright position. As a result, the disclosed construction enables the lock lever to be engaged to re-cock the hammer when the lock lever is in the safe position. This construction complies with the European standard.
In order to provide a preferred drop-in or non-adjustable trigger unit, it was desirable to design the parts so that they were relatively insensitive to manufacturing tolerances. This was achieved in that the surface of the front hook, which comes into contact with the trigger and thus controls the relative position of the front hook to the trigger, is at a substantial distance from the axis of rotation of the front hook compared to conventional designs. In the configuration represented by the present invention, this distance was set at approximately 1.16 inches (2.95 cm). The radius from the axis of rotation of the front hook to the actual catch surface is approximately 0.38 inches (9.65 mm). Accordingly, a manufacturing tolerance of +/- 0.006 inches (0.152 mm) at the contact point only moves the catch surface by approximately +/- 0.002 inches (0.051 mm). Maintaining the position of the front hook relative to the trigger enables standard Ferti6
BE2019 / 5111 tolerances with a minimal change of the hook position relative to other fire control components.
Another aspect of the trigger unit shown is the displacement of the spring of the front hook to a position in front of the trigger axis of rotation. A related design aspect is to allow the front hook to pivot up to 8.5 degrees, but only when the hammer has to move through the front hook while the safety lever prevents the trigger from rotating . At all other times, the front hook remains stationary to the trigger. A standard breaker spring is used under the front hook to allow sufficient force to be applied to the front hook to prevent it from moving under heavy impact loads (usually associated with a drop test of the firearm).
By designing and arranging the front hook for pivotal movement about the trigger pivot axis, the center of gravity of the front hook is maintained near its center of rotation, thereby preventing shock loads from developing a level of force that could cause the front hook to do so Impact loads lose contact with the catch surface of the hammer. The construction shown is relatively insensitive to manufacturing tolerances because it has long parts instead of short parts. If the front hook bridges the interrupter (rear hook), this also increases the stability of the front hook when the trigger is actuated.
Brief description of the drawings
1 shows a partial perspective view of a firearm breech housing with a trigger unit according to an exemplary embodiment;
Fig. 2 shows a side view of the trigger unit of Fig. 1 in a safe position with the hammer cocked;
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Fig. 3 shows a side view of the trigger unit of Fig. 2 with the safety lever in the fire position;
Figure 4 shows a side view of the trigger unit of Figure 2 in a position indicating the end of the first stage of trigger actuation movement;
Figure 5 shows a side view of the trigger unit of Figure 2 in a position conforming to the European standard which allows adjustment to the safe position with the hammer in the upright-Z forward position;
6 is a side view of the trigger unit of FIG. 2 showing the ability of the hammer to rotate, thereby touching the front hook and causing it to rotate;
Figures 7A-7C show several views of an alternative embodiment of a trigger unit;
8 shows an assembly view of an alternative embodiment of a hammer and trigger group.
FIGS. 9A-9D show several views of a trigger, a component of the trigger unit in FIGS. 7A-7C;
FIGS. 10A-10D show several views of a front hook, a component of the trigger unit in FIGS. 7A to 7C;
FIGS. 11A to 11D show several views of a rear hook, a component of the trigger unit in FIGS. 7A-7C;
Fig. 12A shows a side view of the hammer and trigger group of Fig. 8;
BE2019 / 5111 Fig. 12B shows a cross-sectional view of the hammer and trigger group of Fig. 12A;
Figures 13A-13C show different views of an alternative embodiment of a trigger unit;
FIGS. 14A-14D show several views of a trigger, a component of the trigger unit of FIGS. 13A-13C;
Fig. 15A shows a side view of a hammer and trigger group containing the trigger unit of Figs. 13A-13C; and
Figure 15B shows a cross-sectional view of the hammer and trigger assembly of Figure 15A.
Description of Selected Embodiments For a better understanding of the principles of the claimed invention, reference is now made to the embodiments shown in the drawings and a specific language is used to describe them. However, it is to be understood that this is not intended to limit the scope of the claimed invention. Any changes and further modifications to the described embodiments and any other applications of the principles of the claimed invention, as described herein, are contemplated as would normally be apparent to those skilled in the art to which the claimed invention is related. An embodiment of the claimed invention is presented in great detail, although it will be apparent to those skilled in the art that some features that are not relevant to the present claimed invention may not be shown for clarity.
BE2019 / 5111 With regard to the description and the claims, it is pointed out that singular forms such as one, one, the one and the like also include the majority, unless expressly stated otherwise. References to a device or device include one or more such devices and their equivalents. It is also noted that directional expressions such as left, right, up, down, up, down, and the like are used only for ease of understanding for the reader to facilitate understanding of the illustrated embodiments, and are not intended to be Use of these directional expressions is intended in any way to limit the described, illustrated and / or claimed features to a specific direction and / or orientation.
1 shows a partial perspective view of a firearm breech housing 20. The breech housing 20 contains a trigger unit 22, which represents an exemplary embodiment. The trigger unit 22 may include individual features and concepts that are adaptable to different firearm platforms. In the present invention, however, the focus is on the entire trigger unit 22 and its use for an M4 / M16 (AR) platform. The trigger unit 22 is designed and arranged for use as a two-stage drop-in trigger unit for this platform and provides a construction that conforms to the European standard described herein.
[023] The breech housing 20 is constructed and arranged in a manner that is generally consistent with an M4 / M16 (AR) platform and modified as necessary or as required to accommodate the trigger unit 22 and the use of the trigger unit 22 in the intended manner. A securing lever 24 is provided as part of the closure housing 20, which is typically constructed and arranged in such a way that it has a safe position (see FIG. 2) and a fire position (see FIG. 3). A hammer 26 is provided as part of the closure housing 20. Since the hammer 26 is specifically designed and arranged so that it can be used with the Kompo10
BE2019 / 5111 components of the trigger unit 22, it is possible to view the hammer 26 in terms of its interacting relationship with the other components of the trigger unit either as a separate component built into the lock housing 20 or as a component that is considered part of the trigger unit 22 can.
According to FIGS. 1 and 2, the trigger unit 22 has a trigger 28, a front hook 30, a rear hook 32, a spring 34 and a rotary bush 36. As mentioned, the hammer 26 can either be considered part of the trigger unit 22 or, similarly to how the safety lever 24 is received in the lock housing 20, can be viewed as a separate component received in the lock housing 20. As mentioned above, the rear hook 32 can also be referred to as an interrupter (s). In the illustrated embodiment, hammer 26 can be used with a standard M4 / M16 trigger. These components of the trigger unit 22 are positioned in the position or in the safe state when they cooperate with the hammer cocked. This is the typical safe state of the firearm. In addition, in the construction shown in Figures 1 and 2, a hammer sleeve 38 and a cooperating hammer spring (not shown) are provided. The geometric center of the hammer sleeve 38 represents the axis of rotation for the hammer 26.
As can be seen from the shapes, the dimensions, the positioning and the assembly of the components of the trigger unit 22, see FIGS. 1 and 2, the hammer 26 is tensioned by the front hook 30 and brought into engagement with it. In particular, the catch pawl surface 40 of the hook extension 42 lies above the catch pawl surface 44 of the hammer extension 46. By pulling the trigger 28, a torque vector is exerted on the front hook 30 and the rear hook 32 for their rotational movement about the axis of rotation of the rotary bush 36. By setting the safety lever 24 to the safe position, as shown in FIGS. 1 and 2, a rotational movement of the front hook 30 and the rear hook 32 about the rotating bush 36 is caused by the physical concern
BE2019 / 5111 of the front hook 30 and the rear hook 32 on the contact surface 48 of the locking lever 24 prevented.
According to FIGS. 1 and 2, it can be seen that the rotary bushing 36 extends both through the front hook 30 and through the rear hook 32 in a direction that runs in the plane of the paper and laterally to the plane of the closure housing 20. This construction allows these two hook components and the trigger to rotate somewhat independently. The rotary bushing 36 also extends through a section of the trigger 28. By using and positioning the spring 34, these two hook components are connected to one another in such a way that a rotary movement of the front hook 30 clockwise about the axis of rotation of the rotary bushing 36 causes the movement (rotary movement in the Clockwise (CW direction)) of the rear hook 32 influenced. A portion of the trigger 28 engages a portion of the front hook 30 so that withdrawal of the trigger 28 provides a torque vector about the axis of rotation of the pivot sleeve 36 against the front hook 30 which tends to rotate the front hook 30 counterclockwise. The portions of trigger 28 and front hook 30 that engage each other as a result of trigger actuation are to the left of pivot bushing 36. Spring 34 is to the right of and in front of pivot bushing 36. Regarding the orientation of the latch housing 20 and the trigger unit 22, the left direction is the direction proximal to the user of the firearm, while the right direction is the direction distal to the user of the firearm. The rear hook 32 and the hammer 26 are not in direct contact with one another in the state of the firearm shown in FIGS. 1 and 2.
According to the state of the firearm shown in FIG. 3, the safety lever 24 has been set to the fire position. The abutment surface 48 of the safety lever 24, which has prevented rotation of the trigger and release of the hammer 26, has been moved to a second position which provides clearance for the trigger to rotate about the Ham12
BE2019 / 5111 mer to release. In the state of the firearm shown in FIG. 3, the firearm is ready to be fired when the trigger 28 is actuated.
The trigger 28 rotates about the axis of the rotary bush 36, causing the front hook 30 to rotate clockwise about the axis of the rotary bush 36. When the right side of the front hook 30 acts on the spring 34, the rear hook 32 rotates clockwise around the axis of the rotary bush 36. When the contact surface 48 has been moved out of the way, the safety lever 24 prevents or suppresses this described rotational movement of the trigger 28, the front hook 30 and the rear hook 32 not.
Figure 4 shows the end of the first stage trigger actuation. According to the transition from the state of the firearm shown in FIG. 3 to the state of the firearm shown in FIG. 4, it can be seen that the shoulder 50 of the rear hook 32 is rotated in contact with a contact surface 52 of the hammer 26. In a two-stage trigger unit, the first stage has a relatively long path that stops when the appendix 50 of the rear hook 32 comes into contact with the engagement or contact surface 52 of the hammer 26.
A further rotary movement of the trigger 28 (trigger actuation) leads to the rear hook 32 remaining in the position shown (ie generally stationary) against the hammer 26, while other components of the trigger unit, in particular the trigger 28 and the front hook 30 , continue to rotate clockwise around the axis of the rotary bush 36.
During the second stage of a two stage trigger assembly, spring 34 is compressed by the continued clockwise rotation of front hook 30 and the generally steady state of rear hook 32 due to its engagement with (i.e. engagement with) abutment surface 52 of hammer 26. When the spring 34 is compressed, the reaction force creates an increased force against the trigger actuation because the spring 34 must be compressed to move the front hook 30 during the
BE2019 / 5111 rear hook 32 opposes this movement, requiring greater force to operate or rotate trigger 28. As a result, the second stage of movement of the trigger unit 22 requires a higher actuation force, but only for a relatively short path of movement. The safety lever 24 does not prevent or suppress the trigger unit 22 from going through these two steps described when it is in the safe position.
4, it can be seen that when the spring 34 is compressed, the rotational movement of the front hook 30 continues in the clockwise direction and the catch pawl surface 40 is rotated away from the catch pawl surface 44. This disengagement of the catch surfaces leads to the release of the hammer 26 and the firing of the firearm. In this stage of the fire sequence, the front hook 30 is the only component that prevents the hammer from being released. As soon as the front hook 30 is pivoted out of engagement by the hammer 26 on the catch pawl surfaces, the hammer 26 is released for firing.
Referring to Figure 5, it is noted that any of several possible malfunctions can occur that could result in a firing malfunction condition in which the hammer remains in the upright / forward position. This state of failure of the firing function is shown in FIG. 5. In accordance with what has been explained herein as a European standard and in order to ensure that the trigger unit 22 complies with this standard, the design and arrangement of the trigger unit, in this case the trigger unit 22, as used for the M4 / M16- (AR) platform is used, the following steps are enabled.
First, when the hammer 26 is in the upright / forward position shown (see Fig. 5), the user of the firearm (i.e. the shooter) must take the force off the trigger 28. The next step is to turn the safety lever 24 to the safe position, as shown in FIG. 5. As a reminder: The construction and arrangement of a standard or conventional14
BE2019 / 5111 m4 / M16 (AR) trigger does not allow the trigger to return to a position where the safety lever can be rotated to the Safe position when the hammer is in the up / forward position.
The conformity of the trigger unit 22 with the European standard is made possible in part by a change in the design of the front hook 30. This change in the design of its shape and dimensions allows the front hook to rotate just enough to allow the hammer 26 to move the front hook 30 out of the way to allow the hammer 26 to be re-tensioned when the rotational movement of the trigger 28 would be impaired or blocked by the safety lever 24 being in the safe position. Another feature of the trigger unit 22 relates to the design of the trigger 28. The trigger 28 has been designed such that the trigger 28 does not have to be pressed when the hammer 26 is in the upright / forward position (see FIG. 5). The trigger position / condition enables the safety lever 24 to be engaged and the hammer 26 to be reloaded when the safety selector 24 is in the safe position. This complies with the European standard.
[036] A related design feature of the disclosed embodiment is to move the spring 34 to a position to the right of (ie, before) the fulcrum (ie, the axis of the pivot sleeve 36) and to allow the front hook 30 to extend to about 8, Can be swiveled 5 degrees. This permissible rotational movement of the front hook 30 would only be possible if the hammer 26 had to be moved through the front hook 30 if the trigger 28 was prevented from rotating by the safety lever 24 being in the safe position. At all other times, the front hook 30 remains stationary with respect to the trigger 28.
[037] The interrupter spring 34, located under the front hook 30 as shown in the drawings, exerts sufficient force on the front hook 30 to cause any possible movement due to an impact load
BE2019 / 5111. A shock load would typically occur during a drop test of the corresponding firearm. By making the front hook 30 about the trigger rotation axis, i.e. the axis of the rotary bush 36 is pivotable, the design and construction of the trigger unit 22 also keep the center of gravity of the front hook 30 relatively close to its axis of rotation. This construction helps to minimize or mitigate any adverse effects of the shock load. Such an adverse effect could be that the front hook 30 loses contact with the catch surface 44 of the hammer 26.
A further design feature of the trigger unit 22 relates to the overall design concept for the components. Ideally, these components would be relatively insensitive to manufacturing tolerances. This has been achieved, at least in part, by shaping and dimensioning the front hook 30 such that the front hook surface, which comes into contact with the trigger 28 and thus controls the relative position of the front hook 30 to the trigger 28, from the pivot point of the front hook ( Rotary bushing 36) is spaced, whereby the effect of manufacturing tolerances is reduced. In the exemplary construction of the trigger unit 22, this distance from the contact point to the pivot point of the front hook is approximately 1.16 inches (2.95 cm). The radius from the pivot point of the front hook of the pivot sleeve 36 to the free pawl surface 40 is approximately 0.38 inches (9.65 mm). As a result, and as an example, a manufacturing tolerance of +/- 0.006 inches (0.152 mm) at the contact point only moves the free pawl surface 40 by approximately +/- 0.002 inches (0.05 mm). Maintaining the position of the front hook 30 relative to the trigger 28 enables the use of standard manufacturing tolerances with only a minimal impact on the position of the front hook relative to other firing control components.
Fig. 6 shows the next stage after the state shown in Fig. 5 when the firearm returns to the initial state of Figs. 1 and 2. The order of the steps and the movement of the components is as follows.
BE2019 / 5111 First, the trigger 28 is prevented from rotating by the safety lever 24 being in the safe position. When the user of the firearm pulls the bolt carrier backward, this causes the hammer 26 to rotate. As shown in FIG. 6, the hammer 26 comes into contact with the front hook 30 as it rotates. This causes the front hook 30 to rotate clockwise about the axis of the rotary bush 36 relative to the trigger 28. The described movement of the front hook 30 is made possible by compressing the spring 34. Once the hammer 26 has passed or cleared the front hook 30, the front hook 30 returns to its rear position where it is repositioned to prevent the hammer 26 from rotating. As a result, the trigger unit 22 is reset to the safe state of the firearm, which is shown in FIGS. 1 and 2.
[040] Various aspects of the present invention are set out in the following numbered paragraphs.
1. trigger unit for a firearm, which has a breech housing, a securing lever and a hammer, the trigger unit having:
a trigger with an axis of rotation;
a front hook constructed and arranged to move with the rotation of the trigger;
a rear hook arranged in cooperation with the front hook; and a spring disposed between the front hook and the rear hook, the front hook and trigger being constructed and arranged relative to the safety lever and hammer such that the hammer can be reloaded from an upright position during the Safety lever is in a safe position.
BE2019 / 5111
2. trigger unit according to paragraph 1, wherein the front hook has a catch pawl surface and the hammer has a catch pawl surface, the engagement of the free pawl surfaces with each other keeps the hammer in a tensioned state.
3. trigger unit according to one of the preceding paragraphs, further with a rotary bushing which defines the axis of rotation of the trigger.
4. trigger unit according to paragraph 3, wherein the rotary bushing extends through the trigger, the front hook and the rear hook.
5. Trigger unit according to one of the preceding paragraphs, wherein the securing lever is arranged proximal to the axis of rotation and the spring is arranged distally from the axis of rotation.
6. trigger unit according to one of the preceding paragraphs, wherein the front hook has an axis of rotation which coincides with the axis of rotation of the trigger.
7. trigger unit according to one of the preceding paragraphs, wherein the rear hook has an axis of rotation which coincides with the axis of rotation of the trigger.
8. trigger unit according to one of the preceding paragraphs, wherein the trigger has a portion which is in engagement with a cooperating portion of the front hook.
9. The trigger assembly of paragraph 8, wherein the cooperating portion of the front hook defines a contact point with the trigger that is approximately 1.16 inches (2.95 cm) from the axis of rotation of the front hook.
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10. Trigger unit according to one of the preceding paragraphs, wherein the front hook has an axis of rotation and a catch pawl surface which is spaced approximately 0.38 inches (9.65 mm) from the axis of rotation.
11. Trigger unit according to one of the preceding paragraphs, the trigger assembly being constructed and arranged as a two-stage drop-in trigger unit which conforms to the European standard for an M4 / M16 (AR) platform.
12. Two-stage drop-in trigger unit for a firearm, which has a breech housing, a locking lever and a hammer, the trigger unit comprising:
a trigger and a cooperating front hook designed and arranged to allow the hammer to be cocked from an up / forward position while the safety lever is in the safe position.
13. trigger unit according to paragraph 12, further comprising a rear hook and a spring arranged between the front hook and the rear hook.
14. trigger unit according to paragraph 12 or 13, wherein the front hook has a catch pawl surface and the hammer has a catch pawl surface, the engagement of the catch pawl surfaces with one another keeps the hammer in a tensioned state.
15. trigger unit according to paragraph 12, 13 or 14, further with a rotary bushing which defines the axis of rotation of the trigger.
16. trigger unit according to paragraph 15, wherein the securing lever is arranged proximal to the rotary bushing and the spring is arranged distal to the rotary bushing.
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17. Two-stage drop-in trigger assembly for a firearm that complies with European standards, with a front hook component designed and arranged to rotate just enough to allow the hammer to release the front hook can move the way to allow the hammer to be re-tensioned if the trigger rotation is impaired by setting the safety lever to the safe position.
18. Two stage drop-in trigger assembly for a firearm compliant with the European standard, the trigger being constructed and arranged in such a way that it does not have to be pressed when the hammer is in the upright-Z forward position, and wherein the Trigger both allows the safety lever to be engaged and the hammer to be re-cocked when the safety lever is in the safe position.
19. Two-stage drop-in trigger assembly for a firearm compliant with the European standard, wherein a front hook defines a surface position that comes into contact with a portion of the trigger, and the distance from the surface position to the axis of rotation of the front hook is approximately 1.16 inches (2.95 cm).
20. Two stage drop-in trigger assembly for a firearm compliant with the European standard, with a spring of the front hook located in front of the axis of rotation of the trigger and the components of the trigger unit allowing the front hook to be up to 8.5 Can be pivoted upwards when the hammer has to be moved through the front hook, when the trigger is prevented from rotating by setting the safety lever to the safe position.
BE2019 / 5111 Figures 7A-7C show the trigger unit 122. The trigger unit 122 generally has a trigger 130, a bushing 140, a pin 142, a front hook 150, a rear hook 170 and a spring 192.
8 shows the trigger and hammer group 124. The trigger and hammer group 124 generally has a trigger 130, a bushing 140, pins 142, a front hook 150, a rear hook 170, a spring 190, a spring 191 and a spring 192 on.
FIGS. 9A-9D show the trigger 130. The trigger 130 generally has an actuating surface 131, a pivot point 132, a groove 133, a seat 134, a seat 135, a surface 136 and a recess 137.
FIGS. 10A-10D show the front hook 150. The front hook 150 generally has a catch pawl 151, a pivot 152, a slot 153, a seat 154 and a seat 156.
Figures 11A-11D show the rear hook 170. The rear hook 170 generally has a pivot point 171, a protrusion 172, a surface 173, a surface 174, a seat 175, a seat 176 and a surface 177.
FIGS. 12A and 12B show the trigger and hammer group 124. In particular, the trigger and hammer group 124 is shown with the trigger unit 122 arranged in a neutral position (in which the securing lever can be brought into engagement), the hammer 180 is arranged in an untensioned position. The recess 137 provides sufficient clearance so that no part of the hammer 180 bears against the trigger 130. As discussed above, this enables compliance with the European standard.
[047] As best seen in FIGS. 12A and 12B, pin 142 and sleeve 140 pivotally connect trigger 130, front hook 150 and breaker 170 to one another. The interrupter 170 extends through
BE2019 / 5111 the slot 153, and the breaker and the front hook 150 extend through the groove 133. In the neutral position shown, the seats 135 and 175 abut, the seats 134 and 154 abut and the spring 192 becomes between seats 156 and 176 compressed in front of pin 142. The surface 177 and / or 136 are arranged in such a way that they rest in the safe position on the contact surface 48 of the locking lever 24. The trigger unit 122 operates similarly to the trigger unit 22 described above.
An unexpected improvement was noted during testing of trigger and hammer group 124. With many triggers, if an operator holds the trigger in a depressed position during the reload cycle, the operator may experience a small counterforce (forward force) exerted on the trigger actuation surface because the hammer hits the rear hook, often causing the The spring between the trigger and the rear hook would be compressed to their stacking height, whereby the impact force is transmitted via the trigger to the operator's finger, which pushes the trigger. This has been referred to as a trigger slap. However, if the trigger of the trigger and hammer group 124 is held in the depressed position during the reload cycle, this results in a significant reduction and even elimination of the felt trigger blow. This illustrated configuration of the front hook and the rear hook causes the hammer to generate an insignificant trigger stroke when the hammer is re-tensioned. For people who frequently fire trigger trigger guns, the trigger blow can cause problems such as tendinitis and / or nerve damage. Removing the trigger stroke may be beneficial for some operators who experience such negative effects.
FIGS. 13A-13C show a trigger unit 222. The trigger unit 222 generally has a trigger 230, a bushing 140, a pin 142, a front hook 150, a rear hook 170 and a spring 192.
BE2019 / 5111 Figures 14A-14D show trigger 230. Trigger 230 generally has an actuating surface 231, a pivot point 232, a groove 233, a seat 234, a seat 235, a surface 236 and a protrusion 238.
FIGS. 15A and 15B show a trigger and hammer group 224. In particular, the trigger and hammer group 224 is shown with the trigger unit 222 arranged in a neutral position (in which the locking lever can be brought into engagement), with the hammer 180 is in an untensioned position. In this position, the projection 238 overlaps the hammer 180, indicating that this position cannot be reached. When the hammer is in the untensioned position shown, the protrusion 238 would force the trigger assembly 222 to rotate counterclockwise, thereby positioning the surface 177 over the abutment surface 48 of the lock lever 24, thereby preventing the lock lever from engaging when the Hammer 180 is in an untensioned position. While this does not conform to the European standard, it does conform to the standard operation of US M4 / M16 firearms. Except that it has the protrusion 238 instead of the recess 137, the trigger and hammer group 224 operates in the same way as the trigger and hammer group 124 described above.
[052] Although the present invention has been illustrated and described in detail in the drawings and the foregoing description, this is only illustrative and not restrictive, and it is to be understood that a preferred embodiment has been illustrated and described , and that all changes, equivalents, and modifications falling within the scope of the invention as defined by the following claims are to be protected. All publications, patents, and patent applications cited in this specification are incorporated herein by reference, as if each and every publication, patent, or patent application were specifically and individually
BE2019 / 5111 is vidually specified, incorporated herein by reference in its entirety and set forth.
[053] The language used in the claims and in the written description and in the above definitions is only intended to have its clear and ordinary meaning, except for expressions which have been explicitly defined above. Such a clear and ordinary meaning is defined herein to include all consistent dictionary definitions from the universal Merriam-Webster dictionary last published (on the filing date of this document)
Contains dictionary.

权利要求:
Claims (23)
[1]
Claims be201 9/5111
1. trigger unit (22, 124) for a firearm, which has a breech housing (20), a safety lever (24) and a hammer (26, 180), the trigger unit having:
a trigger (28, 130) with an axis of rotation (132);
a front hook (30, 150) constructed and arranged to move with a rotational movement of the trigger, the front hook having a catch pawl surface (40, 151) and the hammer having a catch pawl surface (44, 181), the Engagement of the catch pawl surfaces keeps the hammer in a tensioned state;
a rear hook (32, 170) disposed in cooperation with the front hook; and one arranged between (34, 192) the front hook and the rear hook, characterized in that the front hook and the trigger are constructed and arranged relative to the safety lever and the hammer in such a way that the hammer can be re-tensioned from an upright position, when the safety lever is in the safe position.
[2]
2. trigger unit according to claim 1, wherein the trigger defines a recess (137) so that the hammer does not abut the trigger unit when the locking lever is in the safe position.
[3]
3. trigger unit according to one of the preceding claims, wherein the spring is arranged in front of the axis of rotation of the trigger.
[4]
4. trigger unit according to one of the preceding claims, wherein the front hook is rotatable relative to the trigger.
[5]
5. trigger unit according to one of the preceding claims, wherein the front hook and the rear hook are constructed and arranged such that the
BE2019 / 5111
Hammer re-cocking after firing produces an insignificant trigger blow.
[6]
6. trigger unit according to one of the preceding claims, further comprising a rotary bushing (36, 140) which defines the axis of rotation of the trigger.
[7]
7. trigger unit according to claim 6, wherein the rotary bushing extends through the trigger, the front hook and the rear hook.
[8]
8. trigger unit according to one of the preceding claims, wherein the
Locking lever is arranged proximal to the axis of rotation and the spring distal to the axis of rotation.
[9]
9. trigger unit according to one of the preceding claims, wherein the front hook has an axis of rotation (152) which coincides with the axis of rotation of the trigger.
[10]
10. trigger unit according to one of the preceding claims, wherein the rear hook has an axis of rotation (171) which coincides with the axis of rotation of the trigger.
[11]
11. Trigger unit according to one of the preceding claims, wherein the trigger has a cooperating section (134) which engages with a surface (154) of the front hook.
[12]
12. The trigger assembly of claim 11, wherein the cooperating portion of the front hook defines a contact point with the trigger that is spaced approximately 2.95 cm (1.16 inches) from the axis of rotation of the front hook.
[13]
13. Trigger unit according to one of the preceding claims, wherein the front hook has an axis of rotation (152) and a catch pawl surface (151) which is spaced approximately 9.65 cm (0.38 inches) from the axis of rotation.
BE2019 / 5111
[14]
14. trigger unit according to one of the preceding claims, wherein the
Trigger unit is designed and arranged as a two-stage drop-in trigger unit that complies with the European standard for an M4 / M16 (AR) platform.
[15]
15. Two-stage drop-in trigger unit (22, 124) for a firearm, the one
Lock housing (20), a safety lever (24) and a hammer (26, 180), characterized in that the trigger unit has:
a trigger (22, 124) and a cooperating front hook (30, 150) constructed and arranged so that the hammer can be reloaded from an up / forward position when the safety lever is in the safe position.
[16]
16. The trigger assembly of claim 15, further comprising a rear hook (32, 170) and a spring disposed between (34, 192) the front hook and the rear hook.
[17]
17. The trigger unit of claim 15 or 16, wherein the front hook has a catch pawl surface (151) and the hammer has a catch pawl surface (181), the engagement of the catch pawl surfaces together holding the hammer in a tensioned state.
[18]
18. trigger unit according to one of claims 15, 16 or 17, further comprising a rotary bushing (140) which defines the axis of rotation of the trigger.
[19]
19. trigger unit according to claim 18, wherein the locking lever is arranged proximal to the rotary bushing and the spring is arranged distal to the rotary bushing.
[20]
20. trigger unit according to one of claims 1-14, wherein the trigger has a first seat (135) in front of the axis of rotation and a second seat (134) behind the axis of rotation;
the front hook being rotatable about the axis of rotation and the front hook having a third seat (156) in front of the axis of rotation and a fourth seat (154)
BE2019 / 5111 behind the axis of rotation, wherein the fourth seat is designed so that it is optionally against the second seat;
wherein the rear hook (170) is rotatable about the axis of rotation and wherein the rear hook has a fifth seat (175) and a sixth seat (176), the fifth seat being designed to selectively abut the first seat, thereby causing the rear hook to selectively rotate with the trigger; and wherein the spring is positioned between the third and sixth seats so that the spring spreads the front hook and the rear hook apart.
[21]
The trigger unit of claim 20, wherein the trigger defines a groove (133) that receives a portion of the front hook and a portion of the rear hook.
[22]
22. The trigger assembly of claim 21, wherein the front hook defines a slot (153) through which the rear hook passes.
[23]
23. trigger unit according to one of claims 1-14 and 20-22, wherein the trigger defines a recess (137) so that the hammer does not hit the trigger in a relaxed position when the safety selector switch is in a safe position.

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同族专利:

公开号 | 公开日

DE102019104346A1|2019-08-22|

CZ201998A3|2019-08-28|

US10488134B2|2019-11-26|

BE1026041A1|2019-09-19|

US20190257606A1|2019-08-22|

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法律状态:
2020-08-10| FG| Patent granted|Effective date: 20200525 |

优先权:

申请号 | 申请日 | 专利标题

US201862632590P| true| 2018-02-20|2018-02-20|

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