• 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 invention relates to a construction of a ratchet wheel for a bicycle hub, comprising a hub bearing (10), a coupling ring (20), a sleeve bearing (30) and a locking tooth set (40), characterized in that the coupling ring (20) has a plurality of in a small spaced clutch teeth (21), wherein at most 155 teeth can be arranged, wherein the pawls (41) of the ratchet set (40) are each provided with a plurality of engagement teeth (411) which in coordination with the clutch teeth (21 ) are also arranged at a small distance from each other, so that the distance on which the engagement teeth (411) slide on the tooth ends of the clutch teeth (21) is effectively shortened, whereby the distance that the ratchet set (40) and the coupling ring (20) must overcome to mesh, is reduced, so that the ratchet set (40) and the coupling ring (20) are quickly engaged and coupled with each other At the same time, the gap of pedaling is also reduced so that the driver can step on the pedals with greater safety, which contributes to increasing the driving safety.
    公开号:CH712024A2
    申请号:CH00053/16
    申请日:2016-01-08
    公开日:2017-07-14
    发明作者:Chen Ching-Shu
    申请人:Chosen Co Ltd；
    IPC主号:
    专利说明:

    Description TECHNICAL FIELD The invention relates to a bicycle hub unit, in particular to a structure of a ratchet wheel for a bicycle hub.
    Background Art Fig. 9 shows a conventional ratchet device for a bicycle hub that can be quickly engaged. The ratchet device comprises a spindle 50, a hub bearing 60 and a ratchet sleeve 70, wherein the hub bearing 60 is rotatably mounted on the spindle 50, wherein at one end of the hub bearing 60 a Sperrradaufnahme 61 is recessed, wherein on the inner peripheral surface of the Sperrradaufnahme 61 a Variety of spaced tooth spaces 611 is formed, wherein the ratchet sleeve 70 is rotatably mounted on the spindle 50, wherein on the hub bearing 60 facing the end of the Sperrradhülse 70 a wheel-shaped body 71 is disposed, which is inserted into the Sperrradaufnahme 61, wherein the wheel-shaped body 71 a plurality of evenly divided into two groups, mutually staggered receptacles 72 is arranged spaced, wherein the distances of the receptacle 72 are provided differently to its two adjacent sides by a tooth spacing, wherein in each receptacle 72 a pawl 73 and a spring blade 74 engage ; if the driver again steps forward on the pedals, the pawl 73 closest to the ratchet wheel 61 is automatically selected to move the hub, which can quickly engage the teeth; thus, the hub bearing 60 is made to move quickly.
    However, the conventional structure of a ratchet wheel for a bicycle hub has the following disadvantages: the pawl 73 engages radially in the tooth gap 611 in the hub bearing 60, which allows unimpeded operation of the hub on the bike, but also causes the Driving for a long time, the force from which the pawls 73 are loaded when jumping on the tooth spaces 611, can not be evenly distributed to all pawls 73, so that the ends of certain pawls 73 are driven by a concentrated force; this easily leads to faster wear of the pawls 73 and the tooth contour of the tooth spaces 611, so that the pawls 73 are easily disengaged; Furthermore, the pawls 73 must be replaced frequently, which leads to higher costs.
    Furthermore, the number of tooth gaps 611 in the ratchet wheel 61 is smaller, resulting in an increased distance between the respective tooth gaps 611 and an engagement angle of over 90 ° between the pawl 73 and the tooth gap 611; at the same time, this also leads to an increased tact of the certain engagement between the pawl 73 and the tooth gap 611, so that the friction between the pawl 73 and the tooth gap 611 increases and the motive power is thereby compensated so that the number of rotations of the hub is reduced and the Track on which the bike slides is reduced in size; When the driver again steps on the pedals, it may happen that the engagement of the pawls 73 can not be achieved immediately due to the increased distance between the tooth spaces 611, so that the driver will step down, thereby endangering the driving safety.
    OBJECT OF THE INVENTION It is the object of the invention to provide a structure of a ratchet wheel for a bicycle hub with which the deficiencies mentioned in the prior art can be eliminated.
    Technical Solution This object is achieved by a structure of a ratchet wheel for a bicycle hub according to the features of claim 1. Advantageous embodiments are the subject matter of the dependent claims.
    The inventive construction of a ratchet wheel for a bicycle hub includes the following: a hub bearing, which is plugged for a while and so rotatably mounted on the same, wherein on one side of the hub bearing a non-round receiving chamber is provided, in which a coupling ring used and can be fixed in it; a clutch ring having a non-circular outer periphery, a plurality of clutch teeth being sequentially arranged on the inner circumference of the clutch ring, the number of clutch teeth of the clutch ring being 145 to 155 and the angle of the clutch teeth being 57 to 62 degrees; a sleeve bearing, which is mounted on the one hand of the hub bearing, wherein on a hub bearing and the coupling ring opposite end of the sleeve bearing a coupling projection is arranged, which has at least two locking teeth recordings on the outer circumference; and a ratchet set provided with a plurality of pawls equal in number to the number of ratchet receptacles of the sleeve stock, each pawl being latched into the ratchet receptacle together with a spring blade, the pawls being disposed between the hub bearing and the sleeve bearing, so that they rotate with the shaft as the center of the circle with the coupling projection, wherein at the end of the pawl, which protrudes by pressing the spring leaf from the ratchet teeth, a plurality of engagement teeth is arranged, wherein a coupling by the engagement of the engagement teeth and the clutch teeth of the coupling ring is formed, wherein the force angle, in which the pawls engage in the coupling ring and thus effect a coupling operation is 100 to 110 degrees, the total number of engagement teeth of the pawls is 20 to 32, while depending on the number of pawl n four to eight engagement teeth are equally arranged on each individual pawl, wherein the angle of the engagement teeth is 55 to 60 degrees.
    Short description of the drawing [0008]
    Fig. 1 shows a perspective view of an inventive structure of a ratchet wheel for a bicycle hub.
    Fig. 2 shows an exploded view of the inventive construction of a ratchet wheel for a bicycle hub.
    Fig. 3 shows a sectional view of the inventive construction of a ratchet wheel for a bicycle hub in the built state and a schematic representation of taking place by stepping in the clockwise engagement of the ratchet wheel.
    Fig. 4 shows an enlarged schematic representation of a section of the engagement of the pawl in the coupling teeth according to the invention.
    Fig. 5 shows a schematic representation of the force angle of the coupling between the pawl and the coupling ring according to the invention.
    Fig. 6 shows a further sectional view of the inventive construction of a ratchet wheel for a bicycle hub in the assembled state.
    Fig. 7 shows a schematic representation of the taking place by counterclockwise loosening process of the ratchet wheel according to the invention.
    Fig. 8 shows a further embodiment of the invention.
    Fig. 9 shows a schematic representation of a conventional ratchet device for a bicycle hub.
    MODES FOR CARRYING OUT THE INVENTION In the following, objects, features and advantages of the present invention will become more apparent from the detailed description of embodiments and the accompanying drawings. The invention should not be limited to the description and the accompanying drawings.
    Referring to Figs. 1 and 2 in conjunction with Figs. 3 to 5, the inventive structure of a ratchet wheel for a bicycle hub comprises a hub bearing 10, a coupling ring 20, a sleeve bearing 30 and a ratchet set 40. The hub bearing is mounted on a shaft 11 and so rotatably mounted thereon, wherein on one side of the hub bearing 10, a non-round receiving chamber 12 is provided, into which a coupling ring 20 can be inserted and secured therein; the coupling ring 20 has a non-circular outer periphery, wherein on the inner circumference of the coupling ring 20, a plurality of coupling teeth 21 is arranged in sequence, wherein the number of coupling teeth 21 of the coupling ring 20 at 145 to 155, preferably at 150, wherein the angle of the coupling teeth 21 at 57 to 62 degrees, preferably 59 degrees, wherein the included angle between the clutch teeth 21 is 55 to 60 degrees; the sleeve bearing 30 is mounted on the one hand of the hub bearing 10, wherein on a hub bearing 10 and the coupling ring 20 opposite end of the sleeve bearing 30, a coupling projection 31 is arranged, which has at least two locking teeth 32 on the outer circumference, in which a ratchet set 40 with at least two pawls 41st can be used, wherein at most six ratchet teeth 32 are provided for receiving a ratchet set 40 with six pawls 41, wherein the ratchet teeth 32 are each provided with a first recess 321 and a second recess 322; the ratchet set 10 is provided with a plurality of pawls 41, the number of which coincides with the number of ratchet teeth 32 of the sleeve bearing 30, wherein each pawl 41 is brought together with a spring blade 42 for locking into the ratchet seat 32, wherein the pawls 41 between the hub bearing 10 and the sleeve bearing 30 are arranged so that they rotate with the shaft 11 as the center of the circle with the coupling projection 31, wherein at the end of the pawl 41, which protrudes by pressing the spring blade 42 from the Sperrzahnaufnahme 32, respectively arranged a plurality of engagement teeth 411 is, wherein a coupling by the engagement of the engagement teeth 411 and the clutch teeth 21 of the coupling ring 20 is formed, wherein the force angle, in which engage the pawls 41 in the coupling ring 20 and thus effect a coupling operation at 100 to 110 degrees, preferably at 105 degrees , is, wherein the total number of Eingriffsz teeth located 411 from pawls 41 at 20 to 32, while depending on the number of the pawls 41 four to eight engagement teeth 411 are equally on each pawl 41 arranged, lies in this, the angle of the engaging teeth at 55 to 60 degrees. In this embodiment, six pawls 41 are provided, which are each provided with five engagement teeth 411, so that a total of thirty engagement teeth 411 are provided, wherein the angle of the engagement teeth 411 at 55 to 60 degrees, preferably 57 degrees, the included angle between the Engaging teeth 411 is 57 to 62 degrees.
    For the assembly of the inventive construction of a ratchet wheel, reference is made to Fig. 1 to Fig. 3 in conjunction with Fig. 6. The coupling ring 20 is inserted via the receiving chamber 12 in the hub bearing 10 and secured therein. The pawls 41 are inserted into the sleeve bearing 30 in turn via the locking teeth 32 of the coupling projection 31, wherein the pawl 41 and the spring blade 42 are brought into engagement with the first recess 321 and the second recess 322 so that the pawl 41 of the Fed spring 42 and then pivoted outwardly with the first recess 321 as an axis. Further, provided with pawls 41 sleeve bearing 30 is attached to the provided with the coupling ring 20 end of the hub bearing 10 and brought to the coupling projection 31 so as to engage in the coupling ring 20, that the ratchet set 40 is limited between the sleeve bearing 30 and the hub bearing 10 and engage the engaging teeth 411 of the pawl 41 in the coupling teeth 21 of the coupling ring 20. Finally, a shaft seal III is bolted to the end of the shaft 11 and the sleeve bearing 30 is simultaneously limited to the shaft 11, so that the sleeve bearing 30 by the ratchet set 40 with the hub bearing 10 into engagement and can be coupled with the same. If the sleeve bearing 30 is released from the hub bearing 10, it can rotate again.
    Fig. 8 shows a further embodiment of the invention, wherein on the coupling projection 31 of the sleeve bearing 30 three locking teeth 32 are formed, in which a ratchet set 40 with three pawls 41 can be used, the pawls 41 each provided with seven engaging teeth 411 are such that the total number of teeth of a pawl 41 is 21.
    For the use of the inventive ratchet wheel reference is made to Fig. 3 to Fig. 6. About the sleeve bearing 30 is a flywheel (not shown) attached to the hub bearing 10. If the driver steps on the pedals, the flywheel is caused to move by the crank and thus causes the sleeve bearing 30 to rotate or to stop. When the driver steps on the pedals to move, the sleeve bearing 30 engages over the ratchet set 40 into the clutch teeth 21 of the clutch ring 20, and the hub bearing 10 is caused to rotate by the clutch ring 20. In this way, the bike is made to move. The coupling ring 20 has a total of 150 clutch teeth 21, wherein the coupling teeth 21 are arranged at a relatively smaller distance, the engagement teeth 411 of the pawls 41 are formed in accordance with the clutch teeth 21 correspondingly small and narrow, resulting in faster engagement of the pawls 41 in the Clutch teeth 21 of the clutch ring 20 allows, so that an empty pedaling is effectively avoided and driving safety is thereby increased.
    If the driver steps the pedals in the opposite direction, i. rearward, as shown in Fig. 7, the engagement teeth 411 of the pawls 41 are brought to rotate in the engagement direction of the clutch teeth 21 opposite direction, so that the pawls 41 from the end faces of the clutch teeth 21 slidably released and then into the ratchet teeth Pull back 32 so that the sleeve bearing 30 does not perform when turning and thus the hub bearing 10 rotates empty. If the driver stops pedaling while driving, the pawls 41 will also jump in the turning operation and thus disengage from the clutch ring 20, so that the hub bearing 10 runs idle and the bicycle moves slidably.
    The inventive construction of a ratchet wheel for a bicycle hub has the following advantages: 1. on the coupling ring 20 is a large number of clutch teeth 21 formed in a small tooth spacing, with at most 155 teeth can be provided, wherein at the pawls 41 of the ratchet set 40 engaging teeth 411 in coordination with the clutch teeth 21 are also arranged at a smaller pitch, so that the distance on which the engagement teeth 411 slide on the tooth ends of the clutch teeth 21, is effectively shortened, whereby the distance, the ratchet set 40 and the coupling ring 20th to mesh, is reduced, so that the ratchet gear 40 and the coupling ring 20 are quickly engaged and coupled with each other, allowing seamless pedaling, so that the driver can step on the pedals more safely, which contributes to increase driving safety ; and 2. the coupling ring 20 and the ratchet set 40 are arranged such that the engagement angle of the teeth of the coupling ring 20 and ratchet set 40 is less than 70 degrees; In addition, the clock is reduced in size and the number of teeth increased, which helps to reduce friction and thus to avoid the consumption of motor power; The wear of the clutch teeth 21 and the engagement teeth 411 is also reduced, so that a longer life of the ratchet wheel for the bicycle hub is achieved.
    Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that the invention is not limited to these embodiments, but rather modifications in the manner are possible that individual features omitted or other combinations of features can be realized, as long as the scope of the appended claims is not abandoned. The disclosure of the present invention includes all combinations of the featured individual features.
    权利要求:
    Claims (7)
    [1]
    REFERENCE SIGNS LIST 10 hub bearing 11 shaft 111 shaft seal 12 receiving chamber 20 coupling ring 21 coupling tooth 30 sleeve bearing 31 coupling projection 32 locking tooth receptacle 321 first recess 322 second recess 40 locking set 41 pawl 411 engaging tooth 42 spring leaf claims
    A structure of a ratchet wheel for a bicycle hub, comprising: a hub bearing (10) mounted on a shaft (11) and rotatably mounted thereon, a non-round receiving chamber (12) being mounted on one side of the hub bearing (10) ) is provided, in which a coupling ring (20) can be inserted and secured therein; - A coupling ring (20) having a non-circular outer periphery, wherein on the inner periphery of the coupling ring (20) a plurality of clutch teeth (21) arranged in order, wherein the number of clutch teeth (21) of the coupling ring (20) at 145 bis 155, the angle of the clutch teeth (21) is 57 to 62 degrees and the included angle between the clutch teeth (21) is 55 to 60 degrees; - A sleeve bearing (30), on the one hand of the hub bearing (10) is mounted, wherein on a hub bearing (10) and the coupling ring (20) opposite the end of the sleeve bearing a coupling projection (31) is arranged, on the outer circumference (30) at least has two ratchet teeth (32); anda ratchet set (40) provided with a plurality of pawls (41) equal in number to the number of ratchet receptacles (32) of the sleeve bearing (30), each pawl (41) being integral with a spring blade (42). is brought into engagement with the locking tooth receptacle (32), wherein the pawls (41) between the hub bearing (10) and the sleeve bearing (30) are arranged so that they rotate with the shaft (1) as a circle center with the coupling projection (31) , wherein at the end of the pawl (41), which protrudes by pressing the spring blade (42) from the ratchet receiving means (32), respectively a plurality of engagement teeth (411) is arranged, wherein a coupling by the engagement of the engagement teeth (411) and the Coupling teeth (21) of the coupling ring (20) is formed, wherein the force angle, in which engage the pawls (41) in the coupling ring (20) and thus effect a coupling operation is 100 to 110 degrees, the total e number of engagement teeth (411) of the pawls (41) at 20 to 32, while depending on the number of pawls (41) four to eight engagement teeth (411) are equally arranged on each pawl (41), wherein the angle the meshing teeth (411) are at 55 to 60 degrees and the included angle between the meshing teeth (411) is 57 to 62 degrees.
    [2]
    2. Structure according to claim 1, characterized in that on the coupling projection (31) of the sleeve bearing (30) at most six ratchet teeth (32) for receiving a ratchet set (40) with six pawls (41) are provided.
    [3]
    3. Structure according to claim 1 or 2, characterized in that the locking tooth receivers (32) each having a first recess (321) and a second recess (322) are provided, wherein the pawl (41) and the spring blade (42) so to Engaging in the first recess (321) and the second recess (322) are brought, that the pawl (41) acted upon by the spring blade (42) and then with the first recess (321) pivoted outwardly as an axis.
    [4]
    4. Structure according to claim 1, characterized in that the coupling ring (20) is preferably provided with 150 coupling teeth (21).
    [5]
    5. Structure according to claim 1 or 4, characterized in that the angle of the coupling teeth (21) is preferably 59 degrees.
    [6]
    6. Structure according to claim 1, characterized in that the force angle, in which engage the pawls (41) in the coupling ring (20) and thus effect a coupling operation, preferably at 105 degrees.
    [7]
    7. Structure according to claim 1 or 6, characterized in that the angle of the engagement teeth (411) is preferably 57 degrees.
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    同族专利:
    公开号 | 公开日
    CH712024B1|2019-10-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2020-08-31| PL| Patent ceased|
    优先权:
    申请号 | 申请日 | 专利标题
    CH00053/16A|CH712024B1|2016-01-08|2016-01-08|Ratchet device for a bicycle hub.|CH00053/16A| CH712024B1|2016-01-08|2016-01-08|Ratchet device for a bicycle hub.|
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