• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The keyless chuck includes a locking device with a ratchet mechanism comprising a toothed ring (5) with asymmetric teeth (5a) fixed to an outer casing (2), a ratchet ring (9) made of sheet metal disposed of so that it can slide but not rotate with respect to a base body (1) and provided with elastic locking lugs (11) that provide ratchet nails (6), an elastic element arranged to be compressed between the ratchet ring (9) and the toothed ring (5), a locking ring (7) disposed adjacent to the ratchet ring (9), externally to the base body (1) and fixed internally to a locking control sleeve (14), a cam groove (8) formed in the locking ring (7), and a pin (13) inserted in the cam groove (8) and in a hole (30) formed in the base body (1). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2610053A2
    申请号:ES201531353
    申请日:2015-09-22
    公开日:2017-04-25
    发明作者:Antoni ORTIZ BATALLÉ
    申请人:LLAMBRICH PREC SL；Llambrich Precision Sl；
    IPC主号:
    专利说明:

    KEYBOARD HOLDER WITH LOCK DEVICE
    Technical field
    The present invention concerns a keyless chuck provided with a locking device that can be manually operated by a user to lock the chucks of the chuck in a gripping position, which prevents the claws from loosening whatever the direction of rotation of the chuck.
    Background of the invention
    Keyless chucks are known that comprise a base body that has a central longitudinal axis and that is connected to rotate with a drive shaft, and an outer housing externally coupled to the base body so that it can rotate coaxially but not move axially with respect to the body base. The outer shell has an axial opening, and a plurality of claws are movably disposed with respect to the outer shell and in communication with the axial opening. A pusher is coupled to the base body by a threaded coupling and further coupled to the outer housing so that it can slide axially but not rotate coaxially. The pusher is in drive coupling with the claws, so that a rotation of the pusher relative to the base body in a tightening direction moves the claws toward the central longitudinal axis to grip a tool, and a rotation of the pusher relative to the base body in an opposite direction of loosening moves the claws away from the central longitudinal axis to release the tool.
    However, when the keyless chucks of this type are used in machines or motorized tools with reversible direction of rotation or in hand-operated tools, there is a risk that the claws will loosen unwantedly if the machine, the power tool or The hand-operated tool is operated operatively in a direction of reverse rotation coinciding with the aforementioned direction of loosening of the claws.
    To avoid this risk, some known keyless chucks incorporate a locking device that allows the claws to be locked in a grip position. For example, US 8403339 B2 discloses a keyless chuck of the type described above that includes a locking device comprising a fixed toothed ring with respect to the base body and provided with a plurality of asymmetric teeth with sawtooth profile, a locking ring externally coupled to the outer housing so that it can rotate but not move axially with respect to the outer housing, and a ratchet ring that moves axially with respect to the outer housing and with respect to the locking ring between axial positions of locking and unlocking when the locking ring is rotated coaxially with respect to the base body in cooperation with a cam and an elastic element. The ratchet ring has a plurality of opposite asymmetric ratchet teeth and conjugated with the asymmetric teeth of the toothed ring. When the ratchet ring is in the axial locking position, the ratchet teeth engage with the teeth of the toothed ring blocking a relative rotation between the base body and the outer shell in a sense of loosening the grip of the claws but allowing, by virtue of the asymmetric profile of the teeth and the elastic element, a relative rotation in a sense of tightening of the grip of the claws, and when the ratchet ring is in the axial release position, the ratchet teeth are separated and free of contact with the toothed ring.
    In said document US 8403339 B2, the elastic element is arranged such that it permanently pushes the ratchet ring towards the axial locking position and the cam moves the ratchet ring towards the axial unlocking position in opposition to the force exerted by the elastic element.
    Exhibition of the invention
    The present invention provides a keyless chuck with a locking device comprising a base body that has a central longitudinal axis and that is connectable to rotate with a drive shaft, an outer housing externally coupled to the base body so that it can rotate coaxially but not moving axially with respect to the base body, a plurality of claws movably disposed with respect to the outer shell in communication with an axial opening thereof, and a pusher coupled to the base body by a threaded coupling and coupled to the outer shell so that it can slide axially but not rotate coaxially with respect to it, the pusher being in drive engagement with the claws, so that a rotation of the pusher relative to the base body in a tightening direction moves the claws toward the central longitudinal axis and a rotation of the pusher relative to the base body in an opposite direction of loosening moves the g drag away from the central longitudinal axis.
    The chuck of the present invention further comprises a locking device that includes a ratchet mechanism actuated by a locking control sleeve, which is externally coupled to the base body so that it can rotate between angular locking and release positions in cooperation with a cam and an elastic element. When the locking control sleeve is in the angular locking position, the ratchet mechanism blocks a relative rotation between the base body and the outer housing in a sense of loosening of the grip of the claws but allows a relative rotation in a sense of squeeze the grip of the claws, and when the locking control sleeve is in the angular release position, the ratchet mechanism allows a relative rotation between the base body and the outer shell in both directions.
    The ratchet mechanism comprises a toothed ring, a ratchet ring and a locking ring. The toothed ring is fixed relative to the outer housing and has a plurality of asymmetric teeth located in a plane perpendicular to the central longitudinal axis or in a coaxial cone with the central longitudinal axis. The ratchet ring is made of sheet metal and is arranged facing the toothed ring so that it can slide axially but not rotate coaxially with respect to the base body. The ratchet ring has shaped cuts that define one or more interlocking elastic pins that protrude from the annular body inclined towards the toothed ring. Each of these interlocking elastic pins has a free end that provides a ratchet nail. Said elastic element is arranged in compression between the ratchet ring and the toothed ring so that the elastic element permanently pushes the ratchet ring away from the toothed ring.
    The locking ring is arranged externally to the base body and internally fixed to the locking control sleeve in a position adjacent to the ratchet ring on one side thereof opposite the toothed ring. The locking ring has a bearing surface in contact with the ratchet ring.
    Said cam comprises a cam groove formed in a wall of the locking ring and a pin inserted in the cam groove and in a hole perpendicular to the central longitudinal axis formed in the base body. The cam groove determines an axial movement of the locking ring between axial locking and releasing positions corresponding to the angular locking and releasing positions of the locking control sleeve, respectively, when the locking ring is rotated by the sleeve locking command coaxially with respect to the base body in cooperation with the cam.
    When the locking ring is in the axial locking position, the locking ring presses the ratchet nails of the ratchet ring against the toothed ring in opposition to a force exerted by the elastic element, and the ratchet nails are coupled with the asymmetric teeth of the toothed ring blocking a relative rotation between the base body and the outer casing in a sense of loosening of the grip of the claws but allowing, by virtue of the asymmetrical profile of the teeth and the elasticity of the interlocking elastic pins, a relative rotation in a sense of tightening of the grip of the claws. When the locking ring is in the axial release position, the locking ring allows the force exerted by the elastic element to separate the ratchet nail from the toothed ring so that the outer shell can rotate freely in both directions relative to the base body .
    Preferably, the pin is inserted into the hole of the base body with a free adjustment, and the locking control sleeve is externally coupled to pressure on the locking ring with an interference adjustment. Thus, an inner surface of the locking control sleeve covers the cam groove and retains the pin inserted in the cam groove and in the hole of the base body.
    In one embodiment, the elastic element is constituted by a helical spring arranged around the base body and having a first end resting on a support surface of the ratchet ring located between the interlocking elastic pins and a central hole of the annular body, and a second end resting on an annular seat formed in the outer shell between the toothed ring and the base body.
    In another embodiment, the elastic element is constituted by one or more spring elastic pins formed in the ratchet ring. These spring elastic pins are defined by additional cuts formed in the ratchet ring and are folded so that they protrude from the ratchet ring inclined towards the toothed ring. Each of the spring elastic pins has a rounded end portion that rests on the asymmetric teeth of the toothed ring. The rounded end portions are arranged at a greater axial distance from the ratchet ring than the ratchet nails of the interlocking elastic pins. Thus, the rounded end portions of the spring elastic pins rest on the asymmetric teeth of the toothed ring before the ratchet nails of the elastic locking pins engage with the asymmetric teeth of the toothed ring, and slide on the asymmetric teeth of the toothed ring. of the toothed ring when the ratchet ring rotates either way.
    In both embodiments, the ratchet ring is obtained by stamping or laser cutting from a sheet steel element for springs.
    Brief description of the drawings
    The foregoing and other features and advantages will be more fully understood from the following detailed description of some examples of embodiment, which are merely illustrative and not limiting, with reference to the accompanying drawings, in which:
    Fig. 1 is a partially sectioned side view of a keyless chuck with locking device according to an embodiment of the present invention;
    Figs. 2 and 3 are exploded front and rear perspective views of the chuck in Fig. 1;
    Fig. 4 is a side view of a locking ring including a cam groove that is part of the chuck of Figs. 1 to 3;
    Fig. 5 is a sectional view illustrating the profile of asymmetric teeth of a toothed ring that is part of the chuck of Figs. 1 to 3;
    Fig. 6 is a perspective view of a ratchet ring that is part of the chuck of Figs. 1 to 3; Y
    Fig. 7 is a perspective view of a ratchet ring that is part of a keyless chuck with locking device according to another embodiment of the present invention.
    Detailed description of some embodiments
    Referring firstly to Figs. 1 to 3, the keyless chuck with locking device of the present invention comprises, in accordance with one embodiment, a base body 1 having a central longitudinal axis E and which can be connected to a drive shaft (not shown) for turn with it. The drive shaft can belong to a machine, a power tool or a manual drive tool, and can be able to rotate both ways.
    An outer casing 2 is externally coupled to the base body 1 so that it can rotate coaxially but not move axially with respect to the base body 1. The outer casing 2 comprises a front adjustment sleeve 21 and a rear sleeve 22 fixedly connected to each other by a threaded coupling 23, 24. Inside the front adjustment sleeve 21 are claws 3 that are coupled to guides formed in a guide body 20 housed in the front adjustment sleeve 21 and immobilized with respect to the outer housing 2, of such that the claws 3 are movable with respect to the outer casing 2 and are in communication with an axial opening of the front adjustment sleeve 21. The outer casing 2 rotates with respect to the base body 1 in cooperation with rolling elements 25 disposed between the sleeve rear 22 and the base body 1. The rolling elements 25 are configured to withstand mostly axial loads.
    A pusher 4 is coupled to the base body 1 by a threaded coupling 31, 32 and coupled to the outer housing 2 so that it can slide axially but not rotate coaxially. More specifically, the pusher 4 has an external thread thread 31 coupled to an internal thread thread 32 formed in the base body 1, so that a relative rotation between the pusher 4 and the base body 1 results in an axial displacement of the pusher 4.
    The guides of the guide body 20 in which the claws 3 are coupled are inclined in convergent directions towards the central longitudinal axis E and the pusher 4 is coupled to the claws 3 capable of actuating them, so that a rotation of the pusher 4 with respect to to the base body 1 in a tightening direction it moves the claws 3 out of the front adjustment sleeve 21 and towards the central longitudinal axis E and a rotation of the pusher 4 with respect to the base body 1 in a direction of opposite loosening moves the claws 3 towards inside the front adjustment sleeve 21 away from the central longitudinal axis E. The front adjustment sleeve 21 has an outer surface provided with grip reliefs 27 that facilitate a manual grip thereof.
    Preferably, the base body 1 has an axial through hole 18 and the pusher 4 has an axial through hole 19 aligned and in communication with said axial through hole 18 of the base body 1, which makes it possible to grip with the claws 3 stems inserted throughout the entire chuck length
    To prevent the grip of the claws 3 from loosening when the drive shaft rotates the chuck in the said direction of loosening, the chuck includes a locking device comprising a ratchet mechanism actuated by a coupled locking control sleeve 14 externally to the base body 1 at an end opposite the front adjustment sleeve 21.
    The ratchet mechanism comprises a toothed ring 5 formed at a rear end of the rear sleeve 22. This toothed ring has a plurality of asymmetric teeth 5a located radially in a plane perpendicular to the central longitudinal axis E. Fig. 5 illustrates the asymmetric profile of the teeth 5a, where each tooth has a rear face (in relation to the relative direction of tightening rotation) that forms a first angle A1 with respect to a direction D parallel to the central longitudinal axis E and a front face that forms a second angle A2 with respect to the direction D parallel to the central longitudinal axis E, the first angle A1 being greater than the second angle A2.
    The ratchet mechanism further comprises a ratchet ring 9 (shown individually in Fig. 6), which is obtained, for example, by stamping or by laser cutting from a sheet steel element for springs. The ratchet ring 9 has a flat annular body with a central hole 15, retention tabs 17 extending towards the central longitudinal axis E from an inner edge of said central hole 15, and cuts defining three interlocking elastic pins. 11 distributed at equal angular intervals around the ratchet ring 9. The interlocking elastic pins 11 are bent so that they protrude inclined away from the flat annular body. Each of the interlocking elastic pins 11 has a free end that provides a ratchet nail 6.
    The base body 1 has a cylindrical portion on an outer surface of which retention grooves 16 (Figs. 2 and 3) are formed parallel to the central longitudinal axis E. This cylindrical portion of the base body 1 is slidably inserted through of the central hole 15 of the ratchet ring 9 with the retention tabs 17 of the ratchet ring 9 inserted in the retention grooves 16. Thus, the retention tabs 17 in cooperation with the retention grooves 16 of the base body 1 prevent rotation relative between the ratchet ring 9 and the base body 1 but allow axial movement of the ratchet ring 9 with respect to the base body 1.
    The ratchet ring 9 is arranged adjacent and facing the toothed ring 5, and with the interlocking elastic pins 11 directed towards the toothed ring 5. Between the ratchet ring 9 and the toothed ring 5 there is arranged a compression elastic element constituted by a helical spring 28 having a first end resting on a bearing surface 10 of the flat annular body of the ratchet ring 9 located between the elastic locking pins 11 and the central hole 15, and a second end resting on an annular seat 29 formed in the outer housing 2 between the toothed ring 5 and the base body 1. Thus, the helical spring 28 permanently pushes the ratchet ring 9 towards a direction away from the toothed ring 5.
    A locking ring 7 is arranged externally to the base body 1 in a position adjacent to the ratchet ring 9 on one side thereof opposite the toothed ring 5. The locking ring has a bearing surface 7a in contact with the ratchet ring 9 A cam 8 is formed on a cylindrical side wall of the locking ring 7.
    As Fig. 4 best shows, the cam 8 of the locking ring 7 is constituted by a cam groove extending in a circumferential direction between a first end 8a and a second end 8b. The first end 8a of the cam groove is closer in an axial direction of the bearing surface 7a than the second end 8b. The cam groove also has a first intermediate point 8c located closer in the circumferential direction of the first end 8a than the second end 8b and farther in the axial direction of the bearing surface 7a than the second end 8b, and a second point intermediate 8d located closer in the circumferential direction of the second end 8b than the first end 8a and at the same distance in the axial direction of the bearing surface 7a as the second end 8b. The cam groove defines between the first end 8a and the first intermediate point 8c an inclined path with respect to the support surface 7a and between the second intermediate point 8d and the second end 8b a path parallel to the support surface 7a.
    A pin 13 is inserted in the cam groove constituting the cam 8 of the locking ring 7 and in a hole 30 perpendicular to the central longitudinal axis E formed in the base body 1. The pin 13 has a diameter conjugated to a width of the cam groove so that pin 13 can slide along cam 8. Thus, cam 8 in cooperation with pin 13 determines an axial movement of the locking ring 7 between an axial locking position and an axial position of release when the locking ring 7 is rotated relative to the base body 1 between an angular release position, limited by the first end 8a of the cam groove, and an angular locking position, limited by the second end 8b of the cam slot
    Thus, when the locking control sleeve 14 is placed in the angular and axial locking position, the locking ring 7 presses the ratchet nails 6 against the toothed ring 5 as opposed to a force exerted by the coil spring 28, and this blocks a relative rotation between the base body 1 and the outer shell 2 in a direction of loosening of the grip of the claws 3 but allows a relative rotation in a sense of tightening of the grip of the claws 3 due to the elasticity of the pins interlocking elastic 11. When the locking control sleeve 14 is placed in the angular and axial release position, the locking ring 7 allows the coil spring 28 to separate the ratchet nails 6 from the toothed ring 5, which allows relative free rotation between the base body 1 and the outer shell 2 in both directions.
    In the angular position of blocking the compression of the coil spring 28 is greater than in the angular position of release. However, to move from the angular locking position to the angular release position, an additional compression of the coil spring 28 caused by a small ramp in the cam groove from the second intermediate point 8d to the first intermediate point 8c must be overcome. which prevents unintentional unlocking of the ratchet mechanism.
    The aforementioned locking control sleeve 14 is fixed externally to the locking ring 7, and has an inner surface that covers the cam groove of the cam 8 and retains the pin 13 inserted in the cam groove and in the hole 30 of the base body 1. The locking control sleeve 14 has an outer surface provided with grip reliefs 26 that facilitate a manual grip for rotating the locking control sleeve 14 together with the locking ring 7 between the angular and axial position release, delimited by the first end 8a of the cam groove, and the angular and axial locking position, delimited by the second end 8b of the cam groove.
    Fig. 7 shows a ratchet ring 9 belonging to another embodiment (not shown) of the chuck of the present invention, which only differs from that described above in relation to Figs. 1 to 6 in which the elastic element, instead of the helical spring 28, is constituted by elastic spring pins 12 that derive from the ratchet ring 9 itself.
    The ratchet ring of Fig. 7 has cuts defining two interlocking elastic pins 11 located in diametrically opposite positions and additional cuts defining two elastic spring pins 12 arranged in diametrically opposite positions sandwiched between the interlocking elastic pins 11 Both the interlocking elastic pins 11 and the elastic spring pins 12 are folded so that they protrude inclined outward and to the same side of the flat annular body. Each of the interlocking elastic pins 11 has a free end that provides a ratchet nail 6 configured to engage the asymmetric teeth 5a of the toothed ring 5 and each of the spring elastic pins 12 has a rounded end portion 12a configured to rest and slide on the asymmetric teeth 5a of the toothed ring 5.
    The rounded end portions 12a of the spring elastic pins 12 are arranged at a greater axial distance from the flat annular body of the ratchet ring 9 than the ratchet nails 6 of the elastic locking pins 11, so that when the control sleeve of locking 14 is placed in the angular and axial position of unlocking, the locking ring 7 allows a force exerted by the spring elastic pins 12 to separate the ratchet nails 6 from the toothed ring 5, and when the locking control sleeve 14 is placed in the angular and axial locking position, the locking ring 7 presses the ratchet nails 6 against the asymmetric teeth 5a of the toothed ring 5 as opposed to the force exerted by the spring elastic pins 12.
    The scope of the present invention is defined by the appended claims.
    权利要求:
    Claims (15)
    [1]
    1.- Keyless chuck with locking device, comprising:
    a base body (1) having a central longitudinal axis (E) and that is connectable to rotate with a drive shaft;
    an outer casing (2) externally coupled to said base body (1) so that it can rotate coaxially but not move axially with respect to the base body (1), said outer casing (2) having an axial opening;
    a plurality of claws (3) movably disposed with respect to the outer shell (2) in communication with said axial opening;
    a pusher (4) coupled to the base body (1) by a threaded coupling (31, 32) and coupled to the outer housing (2) so that it can slide axially but not rotate coaxially, said pusher (4) being in engagement of actuation with said claws (3), so that a rotation of said pusher (4) with respect to the base body (1) in a tightening direction moves the claws (3) towards said central longitudinal axis (E) and a rotation of the pusher (4) with respect to the base body (1) in a direction of opposite loosening moves the claws (3) away from the central longitudinal axis (E); Y
    a locking device comprising a ratchet mechanism actuated by a locking control sleeve (14) externally coupled to the base body (1) so that it can rotate between angular locking and release positions in cooperation with a cam (8 ) and an elastic element, wherein said ratchet mechanism, when said locking control sleeve (14) is in said angular locking position, blocks a relative rotation between the base body (1) and the outer casing (2) in a sense of loosening of the grip of the claws (3) but allows a relative rotation in a sense of tightening of the grip of the claws (3), and when the locking control sleeve
    (14) is in said angular release position, allows a relative rotation between the body
    base (1) and outer shell (2) in both directions,
    characterized in that the ratchet mechanism comprises:
    a fixed toothed ring (5) with respect to the outer housing (2), said toothed ring (5) having a plurality of asymmetric teeth (5a);
    a ratchet ring (9) made of sheet metal facing the toothed ring (5) and arranged so that it can slide axially but not rotate coaxially with respect to the base body (1), said ratchet ring (9) comprising cuts defining one or more interlocking elastic pins (11) protruding from the annular body inclined towards the toothed ring (5), said interlocking elastic pins (11) having a free end providing a ratchet nail (6), said elastic element being provided for compression between the ratchet ring (9) and the toothed ring (5);
    a locking ring (7) disposed externally to the base body (1) and internally fixed to the locking control sleeve (14) in a position adjacent to the ratchet ring (9) on one side thereof opposite the toothed ring (5) ;
    said cam (8) comprises a cam slot formed in a wall of the locking ring (7) and a pin (13) inserted in said cam slot and in a hole (30) perpendicular to the central longitudinal axis (E) formed in the base body (1), the cam (8) determining an axial movement of the locking ring (7) between axial locking and releasing positions corresponding to the angular locking and releasing positions, respectively, when the locking ring (7) is rotated by the locking control sleeve (14) coaxially with respect to the base body (1);
    wherein the locking ring (7), when in said axial locking position, presses said ratchet nails (6) against the toothed ring (5) in opposition to a force exerted by the elastic element, and when it is in said position axial release allows said force exerted by the elastic element to separate the ratchet nail (6) from the toothed ring (5).
    [2]
    2. Keyless chuck with locking device according to claim 1, characterized in that the locking control sleeve (14) has an inner surface that covers the cam slot and retains said pin (13) inserted in the cam slot and in that hole
    (30) of the base body (1).
    [3]
    3. Keyless chuck with locking device according to claim 1 or 2, characterized in that the elastic element is constituted by a helical spring (28) having a first end resting on a support surface (10) of the ratchet ring (9) located between the interlocking elastic pins (11) and a central hole (15) of the ratchet ring (9), and a second end resting on an annular seat (29) formed in the outer housing (2) between the serrated ring (5) and the base body (1).
    [4]
    4. Keyless chuck with locking device according to claim 1, characterized in that the elastic element is constituted by one or more spring elastic pins (12) defined by additional cuts formed in the ratchet ring (9) and which protruding from the ratchet ring (9) inclined towards the toothed ring (5), each of the spring elastic pins (12) having a rounded end portion (12a) that rests on the asymmetric teeth (5a) of the toothed ring ( 5), said rounded end portions (12a) being arranged at a greater axial distance from the ratchet ring (9) than the ratchet nails (6) of the interlocking elastic pins (11).
    [5]
    5. Keyless chuck with locking device according to claim 1 or 4, characterized in that said ratchet ring (9) is obtained by stamping or laser cutting from a steel plate element for springs.
    [6]
    6. Keyless chuck with locking device according to claim 1, characterized in that the base body (1) has a cylindrical portion inserted through a central hole (15) of the ratchet ring (9), said cylindrical portion of the base body (1) has an outer surface in which at least one retention groove (16) is formed parallel to the central longitudinal axis (E), the ratchet ring (9) has at least one retention tab
    (17) extending towards the central longitudinal axis (E) from an inner edge of said central hole (15) of the ratchet ring (9), and said retention tab (17) is inserted in said retention slot (16) ) of the base body (1) preventing a relative rotation between the ratchet ring (9) and the base body (1).
    [7]
    7. Keyless chuck with locking device according to claim 1, characterized in that the cam groove comprised in the cam (8) extends in a circumferential direction between a first end (8a) and a second end (8b), said first end (8a) being closer in an axial direction of a bearing surface (7a) of the locking ring (7) adjacent to the ratchet ring (9) than said second end (8b).
    [8]
    8. Keyless chuck with locking device according to claim 7, characterized in that the cam groove comprised in the cam (8) also has a first intermediate point (8c) located closer in said circumferential direction of the first end (8a ) that of the second end (8b) and further in said axial direction of said bearing surface (7a) than the second end (8b), and a second intermediate point (8d) located closer in the circumferential direction of the second end ( 8b) that of the first end (8a) and at the same distance in the axial direction of the bearing surface (7a) as the second end (8b).
    [9]
    9. Keyless chuck with locking device according to claim 1, characterized in that the base body (1) has an axial through hole (18) and the pusher (4) has an axial through hole (19) aligned and in communication with said axial through hole (18) of the base body (1).
    [10]
    10. Keyless chuck with locking device according to claim 1, characterized in that the outer housing (2) comprises a front adjustment sleeve (21) in which the claws (3) and a rear sleeve (22) are housed. having a rear end in which the asymmetric teeth (5a) of the toothed ring (5) are formed, said front adjustment sleeve (21) and said rear sleeve (22) being fixedly connected to each other by a threaded coupling (23, 24).
    [11]
    11. Keyless chuck with locking device according to claim 10, characterized in that the claws (3) are coupled to guides formed in a guide body 5 (20) housed in the front adjustment sleeve (21) and immobilized with respect to the outer shell (2).
    [12]
    12. Keyless chuck with locking device according to claim 10, characterized in that the outer housing (2) rotates with respect to the base body (1) in cooperation with rolling elements (25) arranged between the rear sleeve (22) and the body
    10 base (1) to resist axial loads.
    [13]
    13. Keyless chuck with locking device according to claim 1, characterized in that the pusher (4) has an external thread thread (31) coupled to an internal thread thread (32) formed in the base body (1) .
    [14]
    14.- Keyless chuck with locking device according to claim 1, characterized
    15 because the locking control sleeve (14) has an outer surface provided with grip reliefs (26) that facilitate a manual grip.
    [15]
    15. Keyless chuck with locking device according to claim 9, characterized in that the front adjustment sleeve (21) has an outer surface provided with grip reliefs (27) that facilitate a manual grip.
    18
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    法律状态:
    2019-02-08| EC2A| Search report published|Ref document number: 2610053 Country of ref document: ES Kind code of ref document: R2 Effective date: 20190201 |
    2019-02-18| PC2A| Transfer of patent|Owner name: STRYKER CORPORATION Effective date: 20190212 |
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