CN110576935B

CN110576935B - Speed change operation device

Info

Publication number: CN110576935B
Application number: CN201810871090.XA
Authority: CN
Inventors: 约翰·卡兰卓尔; 蔡宗昇
Original assignee: Tektro Technology Corp
Current assignee: Tektro Technology Corp
Priority date: 2018-06-08
Filing date: 2018-08-02
Publication date: 2021-07-06
Anticipated expiration: 2038-08-02
Also published as: CN110576935A; TW202000530A; TWI671233B

Abstract

The invention discloses a variable speed operating device which comprises a shell, a coiling assembly, a gear feeding pawl, a stopping pawl, a positioning pawl, a gear feeding deflector rod and a gear withdrawing deflector rod. The take-up assembly is pivotally mounted to the housing and adapted for winding a bicycle cable. The gear shifting pawl, the stopping pawl and the positioning pawl are pivoted on the shell and are separably meshed with the coiling assembly. The gear-shifting pawl, the stopping pawl and the positioning pawl are independent in movement. The gear shifting lever is pivoted to the shell, and when the gear shifting lever is actuated, the gear shifting lever drives the gear shifting pawl to move so as to force the coiling assembly to rotate in the first rotating direction. The withdrawing shift lever is linearly arranged on the shell, and when the withdrawing shift lever is actuated, the withdrawing shift lever simultaneously drives the advancing pawl, the stopping pawl and the positioning pawl to move so as to enable the coiling assembly to rotate in a second rotating direction opposite to the first rotating direction.

Description

Speed change operation device

Technical Field

The present invention relates to an operating device, and more particularly to a bicycle shift operating device.

Background

The increasing popularity of sports weather in recent years, particularly riding bicycles, has become one of the mainstream activities of the public in leisure. In order to increase the riding operability, a general bicycle is usually provided with a transmission system with a plurality of toothed discs and an operating device for controlling the transmission system, and a rider can operate the operating device according to the terrain or other requirements to switch the chain to different toothed discs so as to obtain the required riding effect.

The aforesaid operating device is usually provided with two shift levers, which can respectively make the rider perform the shift-in and shift-out actions. However, conventionally, these two shift levers are rotary shift levers, and their positions are very close to each other, which may cause confusion for the rider to brake the unintended shift lever. Therefore, the conventional shift operating device needs to be redesigned.

Disclosure of Invention

Accordingly, the present invention is directed to a shift operating device that solves the above-mentioned problems of the conventional shift operating device.

According to an embodiment of the present invention, a shift operating device suitable for pulling a cable of a bicycle comprises a housing, a winding assembly, a shift pawl, a stop pawl, a positioning pawl, a shift lever, and a shift lever. A take-up assembly is pivotally disposed on the housing and adapted for winding the bicycle cable. The gear shifting pawl, the stopping pawl and the positioning pawl are pivoted on the shell and are separably meshed with the coiling assembly. The movement of the gear-shifting pawl, the stopping pawl and the positioning pawl is independent. The gear shifting lever is pivoted to the shell, wherein when the gear shifting lever is actuated, the gear shifting lever drives the gear shifting pawl to move so as to force the coiling assembly to rotate in a first rotating direction. The withdrawing shift lever is linearly movably arranged in the shell, and when the withdrawing shift lever is actuated, the withdrawing shift lever simultaneously drives the withdrawing pawl, the stopping pawl and the positioning pawl to move so as to enable the coiling assembly to rotate in a second rotation direction opposite to the first rotation direction.

According to an embodiment of the present invention, a shift operating device for pulling a cable of a bicycle comprises a housing, a winding assembly, a shift lever, a stopping pawl, a positioning pawl, and a shift lever. The coiling assembly comprises a positioning ratchet wheel, a wire pulling wheel and a traction ratchet wheel. The positioning ratchet wheel, the wire pulling wheel and the traction ratchet wheel can be synchronously and pivotally stacked on the shell in sequence, and the wire pulling wheel is suitable for winding the bicycle cable. The gear shifting lever is pivoted to the shell, and when the gear shifting lever is actuated, the gear shifting lever drives the coiling assembly to rotate in a first rotating direction. The stopping pawl and the positioning pawl are pivoted on the shell so as to be respectively and separably meshed with the traction ratchet wheel and the positioning ratchet wheel of the coiling assembly. The withdrawing shift lever is linearly arranged in the shell, and when the withdrawing shift lever is actuated, the withdrawing shift lever simultaneously drives the stopping pawl and the positioning pawl to move so as to enable the coiling assembly to rotate in a second rotation direction opposite to the first rotation direction.

According to an embodiment of the present invention, a shift operating device suitable for pulling a cable of a bicycle comprises a housing, a winding assembly, a shift lever, a stopping pawl, a positioning pawl, a shift lever, and a connecting rod assembly. The winding assembly is pivotally mounted on the housing and adapted to wind the bicycle cable. The gear shifting lever is pivoted to the shell, and when the gear shifting lever is actuated, the gear shifting lever drives the coiling assembly to rotate in a first rotating direction. The stopping pawl and the positioning pawl are pivoted on the shell and can be detachably meshed with the coiling assembly, and the stopping pawl and the positioning pawl move independently. The gear-withdrawing shift lever is linearly arranged in the shell. The connecting rod assembly is connected between the stopping pawl and the positioning pawl and the gear-reversing shift lever, wherein when the gear-reversing shift lever is actuated, the gear-reversing shift lever simultaneously drives the stopping pawl and the positioning pawl to move through the connecting rod assembly so as to enable the coiling assembly to rotate in a second rotation direction opposite to the first rotation direction.

In the disclosed gear shift operating device, the shift lever is a rotary lever and the shift lever is a linear lever, so that the shift lever is designed to help the rider distinguish shift from shift, thereby avoiding the subsequent problems caused by confusion and misuse.

The foregoing summary of the invention, as well as the following detailed description of the embodiments, is provided to illustrate and explain the principles and spirit of the invention, and to provide further explanation of the invention as claimed.

Drawings

Fig. 1 is a perspective view of a shift operating device according to an embodiment of the present invention.

FIG. 2 is a perspective view of the shift operating device of FIG. 1 with the upper cover and the adjustment member removed.

Fig. 3 is an exploded view of the shift operating device of fig. 1.

FIGS. 4-5 are enlarged views of different areas of FIG. 3.

Fig. 6 is a perspective view of the pushing member of fig. 3.

Fig. 7 to 9 are schematic perspective views of the shift operating device of fig. 2 at different viewing angles.

Fig. 10 to 11 are schematic operation diagrams of the shift operating device of fig. 2 at different viewing angles when the shift operating device is operated to a half of the shift range.

FIG. 12 is an operation diagram of the shift operating device of FIG. 2 from a forward gear position to a next two gear positions.

FIG. 13 is an operation diagram of the transmission operating device of FIG. 12 releasing the shift lever after the shift operation is completed.

FIGS. 14-16 are schematic views of the shift operating device of FIG. 2 operating in a reverse gear mode.

FIGS. 17 to 19 are schematic views of the shift operating device of FIGS. 14 to 16, at different viewing angles, when the shift lever is released after the shift operation is completed.

Wherein, the reference numbers:

1 speed change operation device

10 casing

20 advance shelves module

30 inner support assembly

40 take-up assembly

50 backing module

60 adjusting part

110 lower cover

111 assembling hole

120 upper cover

191 bolt

210 base

211 pivoted with the hole

212 stop block

220 shift lever

221 through groove

291 Assembly Ring

292 bolt

230 biasing element

240 pivot assembly

241 shift lever pivot

243 bearing

244 bearing

245 bearing spacer ring

246 bearing pad

247 pivot bolt

250 advance shelves pawl

251 pivot joint part

252 advance gear tooth part

253 first pushed part

260 shift pawl pivot pin

270 biasing element

310 lower holding plate

320 upper holding plate

330 height-limiting lantern ring

340 assembling board

341 lug

410 traction ratchet

420 position ratchet

430 stay wire wheel

440 biasing element

450 stay wheel sleeve

510 detent pawl

511 pivoting part

512 stop tooth part

513 second pushed part

520 pivoting assembly

521 pawl pivot pin

522 spacing ring

523 bolt

530 biasing element

540 positioning pawl

541 pivot joint part

542 positioning tooth part

543 third pushed part

540a groove

544 convex column

550 biasing element

560 withdrawing shift lever

561 sliding groove

570 withdrawing tension spring

575 link assembly

580 pushing and propping piece

581 pivot joint part

582 pushing part

583 the linkage part

590 draw bar

591 bearing

592 bearing pad

593 bolt

594 bolt

595 bolt of pushing part

596 push-against pivot pin

597 tension spring bolt

5601 push rod

5821 push-up prop

5822 push-down prop

5831 stud

58211 notch of abdication

S inner space

R1-R4 directions

Detailed Description

The detailed features and advantages of the present invention are described in detail in the embodiments below, which are sufficient for anyone skilled in the art to understand the technical contents of the present invention and to implement the present invention, and the related objects and advantages of the present invention can be easily understood by anyone skilled in the art according to the disclosure of the present specification, the protection scope of the claims and the attached drawings. The following examples further illustrate aspects of the present invention in detail, but are not intended to limit the scope of the invention in any way.

In addition, embodiments of the present invention are disclosed in the drawings and, for purposes of explanation, numerous implementation details are set forth in the description below. It should be understood, however, that these implementation details are not intended to limit the invention. In addition, for the sake of simplicity, some conventional structures and elements are shown in the drawings in a simple schematic manner to keep the drawings clean, and are stated first.

Furthermore, unless otherwise defined, all words, including technical and scientific terms, used herein have their ordinary meaning as is understood by those skilled in the art. Furthermore, the definitions of the above-mentioned words should be construed in this specification as having a meaning consistent with the context of the present invention. Unless specifically defined, these terms are not to be construed in an idealized or formal sense.

First, referring to fig. 1, a perspective view of a shift operating device according to an embodiment of the invention is shown. The present embodiment provides a gear shift operating device 1, which is suitable for being assembled on a bicycle handlebar (not shown) and connected to one end of a gear shift cable (not shown), so that a user can tighten or loosen the gear shift cable by operating the gear shift operating device 1, thereby completing the gear shifting operation.

Please refer to fig. 2 to 6, which further describe detailed components of the shift operating device 1, fig. 2 is a perspective view of the shift operating device of fig. 1 with an upper cover and an adjusting member removed, fig. 3 is an exploded view of the shift operating device of fig. 1, fig. 4 to 5 are partially enlarged views of different areas of fig. 3, and fig. 6 is a perspective view of the pushing member of fig. 3. Fig. 7 to 9 are schematic perspective views of the shift operating device shown in fig. 2 from different viewing angles to more clearly understand the assembled structural relationship of the components. It should be understood, however, that the drawings are designed to be somewhat different in their perspective as appropriate for the purpose of illustration and description. It is to be noted that some elements are omitted from the drawings for the purpose of illustration, but it is not intended that the omitted elements need not be assembled in the shift operating device.

In the present embodiment, the shift operating device 1 includes a housing 10, a gear-in module 20, an inner bracket assembly 30, a winding assembly 40, a gear-out module 50 and an adjusting member 60.

The housing 10 includes a lower cover 110 and an upper cover 120. The lower cover 110 and the upper cover 120 can be fastened together by a plurality of bolts 191 to jointly enclose an inner space S (see fig. 2) to accommodate most components of the shift operating device 1. Further, the lower cover 110 has an assembling hole 111 for assembling the gear module 20, and the adjusting member 60 is assembled to the upper cover 120 for adjusting the degree of tightness of the shift cable.

The gear shift module 20 includes a base 210, a gear shift lever 220, a biasing element 230, a pivot assembly 240, a gear shift pawl 250, a gear shift pawl pivot pin 260, and a biasing element 270.

The base 210 is pivotally fixed to a side of the inner bracket assembly 30 facing the lower cover 110 via the pivot assembly 240, such that the base 210 is located inside the lower cover 110 and maintained in the assembly hole 111 of the lower cover 110. The gearshift lever 220 is located outside the lower cover 110 and opposite to the base 210, i.e., the lower cover 110 is located between the base 210 and the gearshift lever 220. An assembly ring 291 is disposed on a side of the gear shift lever 220 opposite to the lower cover 110, and two bolts 292 sequentially penetrate through the assembly ring 291 and the two through grooves 221 of the gear shift lever 220 and are locked to the base 210 located at the assembly hole 111, so that the base 210 can pivot relative to the housing 10 (or relative pivot assembly 240) together with the gear shift lever 220 when the gear shift lever 220 pivots by an external force.

Further, the pivot assembly 240 includes a shift lever pivot 241, a bearing 243, a bearing 244, a bearing spacer 245, a bearing pad 246 and a pivot bolt 247, and the base 210 has a pivot hole 211 and an annular protrusion 213 protruding radially from the surface forming the pivot hole 211. The

bearings

243 and 244 are located in the pivot hole 211 of the base 210 and located on two opposite sides of the annular protrusion 213. A bearing spacer ring 245 is located in the space surrounded by the annular protrusion 213 and is sandwiched between the bearing 243 and the bearing 244. A bearing spacer 246 is positioned on a side of the bearing 244 facing away from the bearing 243 to abut a side of the inner bracket assembly 30 facing the lower cap 110. The pivot bolt 247 is disposed through the inner bracket assembly 30 and protrudes from a side of the inner bracket assembly 30 facing the lower cover 110. The shift lever pivot 241 is sequentially inserted through the bearing 243, the bearing spacer 245, the bearing 244 and the bearing washer 246 to be locked to the pivot bolt 247 of the inner bracket assembly 30, so that the base 210 is fixed to the inner bracket assembly 30.

In addition, the biasing element 230 is disposed between the base 210 and the inner bracket assembly 30, in the embodiment, the biasing element 230 is a torsion spring, and two opposite ends of the torsion spring are respectively fixed to the base 210 and the inner bracket assembly 30, so as to accumulate an elastic force when the base 210 is pivoted in one direction by an external force, and to restore the base 210 in an opposite direction by the elastic force when the external force is cancelled. As shown, the user can apply a force to the shift lever 220 to pivot the shift lever 220 and the base 210 together in a rotational direction (e.g., a direction R1 shown in fig. 10), and during the process, the biasing element 230 accumulates the elastic force and uses the elastic force to pivot the base 210 and the shift lever 220 together in another rotational direction (e.g., a direction R2 shown in fig. 13) opposite to the direction R1 to return to the initial position when the external force is removed.

The reverse pawl 250 is pivotally secured to a side of the base 210 facing away from the lower cover 110 via a reverse pawl pivot pin 260. Therefore, when the base 210 pivots under an external force (e.g., when a user applies a force to the shift lever 220 to drive the base 210), the shift pawl 250 also pivots around the pivot assembly 240. Further, the gear-shifting pawl 250 includes a pivot portion 251, a gear-shifting tooth portion 252 and a first pushed portion 253, the pivot portion 251 is connected between the gear-shifting tooth portion 252 and the first pushed portion 253, and the gear-shifting pawl pivot pin 260 is pivotally disposed through the pivot portion 251.

In addition, the biasing element 270 is disposed on the gear pawl pivot pin 260 and between the gear pawl 250 and the base 210. In the present embodiment, the biasing element 270 is a torsion spring, and opposite ends of the torsion spring are respectively fixed to the gear tooth 252 and the base 210 of the gear pawl 250, so as to accumulate an elastic force when the gear pawl 250 is pivoted in one direction by an external force and to reset the gear pawl 250 in an opposite direction by the elastic force when the external force is removed. As shown in fig. 10 and 13, when the gear shift pawl 250 pivots in the direction R1 due to an external force, the biasing element 270 accumulates a resilient force and pulls the gear shift tooth portion 252 of the gear shift pawl 250 with the resilient force when the external force is removed, thereby pivotally returning the gear shift pawl 250 in the direction R2 opposite to the direction R1.

The inner bracket assembly 30 includes a lower clamping plate 310, an upper clamping plate 320, a height limiting ring 330 and an assembly plate 340, and the take-up assembly 40 includes a pulling ratchet 410, a positioning ratchet 420, a pulley 430, a biasing element 440 and a pulley sleeve 450.

The lower clamping plate 310 is assembled inside the lower cover 110 by the aforementioned bolt 191, and the aforementioned pivot bolt 247 passes through and protrudes out of the lower clamping plate 310 to be locked to the gear shift lever pivot 241 of the pivot assembly 240, so that the base 210 is pivotally fixed on one side of the lower clamping plate 310 facing the lower cover 110 and maintained in the space between the lower clamping plate 310 and the lower cover 110.

In addition, it should be noted that a stop block 212 is protruded from a side of the base 210 facing the lower clamping plate 310. During the pivotal return of the base 210 in the direction R2 by the elastic force of the biasing element 230, the side edge of the lower clamping plate 310 can abut against the stop block 212 to stop the base 210 at the initial position (as shown in the subsequent fig. 13).

The pulley sleeve 450 is sleeved on the pivot bolt 247 and located on a side of the lower clamping plate 310 opposite to the lower cover 110. The pulley 430 is sleeved on the pulley sleeve 450 to pivot relative to the lower clamping plate 310. The traction ratchet 410 and the positioning ratchet 420 are respectively arranged on two opposite sides of the wire pulling wheel 430. Specifically, traction ratchet 410 is located on the side of capstan 430 facing lower clamp plate 310, and positioning ratchet 420 is located on the side of capstan 430 facing away from lower clamp plate 310. Further, since the traction ratchet 410 and the positioning ratchet 420 have irregular concave-convex matching structures with the opposite sides of the pulley 430, respectively, the traction ratchet 410, the positioning ratchet 420 and the pulley 430 cannot rotate relatively (or the traction ratchet 410, the positioning ratchet 420 and the pulley 430 are fixed together in a synchronously pivoted manner), and can only be pivoted together with the lower clamping plate 310 via the pulley sleeve 450 and the pivot bolt 247.

The biasing element 440 is disposed between the traction ratchet 410 and the lower clamping plate 310, in the embodiment, the biasing element 440 is a torsion spring, and opposite ends of the torsion spring are respectively fixed to the traction ratchet 410 and the lower clamping plate 310, so as to accumulate an elastic force when any one of the traction ratchet 410, the positioning ratchet 420 and the pulley 430 is subjected to an external force to pivot the three in one direction, and utilize the elastic force to pivot the traction ratchet 410, the positioning ratchet 420 and the pulley 430 in an opposite direction when the external force is cancelled. As shown in fig. 10 and 13, when any one of the traction ratchet 410, the positioning ratchet 420 and the pulley 430 is subjected to an external force to pivot the three in the direction R1, the traction ratchet 410 can rotate to different forward positions, and the biasing element 440 accumulates an elastic force and pivots the traction ratchet 410, the positioning ratchet 420 and the pulley 430 in the direction R2 opposite to the direction R1 by the elastic force when the external force is removed.

In addition, it should be noted that the gear pawl 250 of the gear module 20 is normally biased by the biasing element 270 to pivot in the direction R1 when the gear pawl is not stressed, and as a result, the gear tooth portion 252 of the gear pawl 250 is normally engaged with the traction ratchet wheel 410 of the take-up assembly 40. Further, the forward tooth portion 252 of the forward pawl 250 and the traction ratchet wheel 410 are both disposed in a slanted face contact or an upright stop face contact configuration, so that the forward tooth portion 252 of the forward pawl 250 and the traction ratchet wheel 410 are only capable of unidirectional engagement. Therefore, as shown in fig. 10, when the forward shifter lever 220 drives the base 210 and the forward pawl 250 to rotate together along the direction R1, the forward tooth portion 252 of the forward pawl 250 contacts with the tooth portion (not numbered) of the traction ratchet 410 on a vertical plane, so that the traction ratchet 410 is pushed by the forward tooth portion 252 and pivots together in the forward direction R1. That is, when the user pulls the shift lever 220 in the direction R1, the pulling ratchet 410, the positioning ratchet 420 and the pulley 430 rotate in the same direction via the base 210 and the shift pawl 250.

The reverse module 50 includes a detent 510, a pivot assembly 520, a biasing element 530, a detent 540, a biasing element 550, a reverse lever 560, a reverse tension spring 570, and a link assembly 575. The connecting rod assembly 575 includes a pushing member 580 and a pulling rod 590, and the pivot assembly 520 includes a pawl pivot pin 521, a spacer ring 522 and a bolt 523.

The stopping pawl 510 is pivoted between a separating position and a stopping position by a pawl pivot pin 521 arranged on a side of the lower clamping plate 310 facing away from the lower cover 110. And it will be appreciated that the stopping pawl 510 is disposed substantially on the same horizontal plane as the traction ratchet 410. Further, the stopping pawl 510 includes a pivoting portion 511, a stopping tooth portion 512 and a second pushed portion 513, the pivoting portion 511 is connected between the stopping tooth portion 512 and the second pushed portion 513, and the pawl pivot pin 521 is pivotally disposed through the pivoting portion 511. The stop teeth 512 correspond to teeth (not numbered) of the traction ratchet 410.

The portion of the pawl pivot pin 521 passing through the pivot portion 511 of the stopping pawl 510 sequentially passes through the spacer ring 522 and the positioning pawl 540, so that the positioning pawl 540 can also pivot relative to the lower clamping plate 310 via the pawl pivot pin 521, and in this embodiment, the positioning pawl 540 can pivot between a positioning position and a disengaged position. And it can be appreciated that the spacer ring 522 can maintain the distance between the stopping pawl 510 and the positioning pawl 540 to maintain the stopping pawl 510 in a position substantially at the same level as the positioning ratchet 420.

Further, the positioning pawl 540 includes a pivot portion 541, a positioning tooth portion 542, a third pushed portion 543 and a protrusion 544. The positioning tooth 542 and the third pushed portion 543 protrude outward from the pivot 541 in different directions, respectively, to form a groove 540a therebetween. The positioning teeth 542 correspond to teeth (not numbered) of the positioning ratchet 420. The protrusion 544 extends from the positioning tooth 542 or the third pushed portion 543 in a direction away from the stopping pawl 510.

The pushing member 580 includes a pivot portion 581, a pushing portion 582 and a linkage portion 583. The pivot portion 581 is connected between the pushing portion 582 and the linking portion 583. The urging member pivot pin 596 is fixed on a side of the lower clamping plate 310 back to the lower cover 110, and the pivot portion 581 is pivotally sleeved on the urging member pivot pin 596. The pushing portion 582 has an upper pushing column 5821 and a lower pushing column 5822, which extend away from the lower cover 110 and toward the lower cover 110, respectively. The upper pushing post 5821 is located in the groove 540a of the positioning pawl 540 (i.e., between the positioning tooth 542 and the third pushed portion 543 of the positioning pawl 540), and one side of the upper pushing post 5821 facing the positioning tooth 542 has an abdicating notch 58211, and the lower pushing post 5822 corresponds to the second pushed portion 513 of the stopping pawl 510.

It is noted that the stopping pawl 510 is biased by the biasing element 530 to pivot in the direction R1, such that the second pushed portion 513 of the stopping pawl 510 normally maintains a distance from the teeth (not numbered) of the traction ratchet 410 and normally abuts against the lower abutment 5822 of the abutment 582 to stop at the disengaging position. Conversely, the stopping pawl 510 is pivoted in the direction R2 to the stopping position by the lower abutment post 5822 of the abutment portion 582 so that the stopping tooth portion 512 of the stopping pawl 510 engages a tooth portion (not numbered) of the traction ratchet 410. Since the stop teeth 512 are in contact with the teeth (not numbered) of the traction ratchet 410 on a vertical plane, the stop teeth 512 of the stop pawl 510 can only engage with the teeth of the traction ratchet 410 in one direction, and the traction ratchet 410 is prevented from rotating in the direction R2 when the stop teeth 512 engage with the traction ratchet 410 (see fig. 13).

The linkage portion 583 has a protrusion 5831 extending away from the lower cover 110 and adapted to pivotally connect the pull rod 590.

The upper clamping plate 320 covers a side of the positioning ratchet 420 opposite to the lower clamping plate 310, and a supporting member bolt 595 sequentially penetrates through the upper clamping plate 320 and the supporting member 580 to be screwed to the supporting member pivot pin 596, so that the supporting member 580 is pivotally clamped between the lower clamping plate 310 and the upper clamping plate 320.

The biasing element 530 is sleeved on the spacer ring 522 and interposed between the stopping pawl 510 and the positioning pawl 540. in the present embodiment, the biasing element 530 is a torsion spring, and opposite ends of the torsion spring are respectively fixed to the second pushed portion 513 of the stopping pawl 510 and the upper clamping plate 320, so as to accumulate an elastic force when the stopping pawl 510 is pivoted in one direction by an external force and to reset the stopping pawl 510 in an opposite direction by the elastic force when the external force is cancelled. As shown in fig. 16 and 18, when the stopping pawl 510 is pivoted to the stopping position in the direction R2 by an external force, the biasing element 530 accumulates an elastic force and pulls the second pushed portion 513 of the stopping pawl 510 by the elastic force when the external force is removed, thereby allowing the stopping pawl 510 to pivot in the direction R1 opposite to the direction R2 to return to the separated position.

The backstop lever 560 is linearly movably disposed on a side of the upper clamping plate 320 facing away from the lower clamping plate 310 and is capable of reciprocating between a backstop position (as shown in subsequent fig. 14) and a release position (as shown in subsequent fig. 17), and the assembly plate 340 covers a side of the backstop lever 560 facing away from the upper clamping plate 320. Specifically, a bolt 593 sequentially penetrates through one of the chutes 561 of the assembly plate 340 and the shift-out lever 560 and the upper clamping plate 320 to be locked on the lower clamping plate 310, and the height-limiting collar 330 is sleeved on the upper clamping plate and is located between the upper clamping plate 320 and the lower clamping plate 310 to maintain the distance between the upper clamping plate 320 and the lower clamping plate 310; and another bolt 594 sequentially penetrates through the assembly plate 340 and another sliding slot 561 of the shift-withdrawing rod 560 and is fixedly locked to the upper clamping plate 320. Thus, the gearshift lever 560 is sandwiched between the assembly plate 340 and the upper clamping plate 320. In addition, the sliding slot 561 of the shift lever 560 is provided with a bearing 591 and a bearing pad 592 which are sleeved on the

bolts

593 and 594, so that the shift lever 560 can only move linearly. In addition, a pushing rod 5601 is further disposed through one end of the shift-backing lever 560, and extends to the outside of the first pushed portion 253 of the shift pawl 250 in the direction toward the lower cover 110.

One end of the shift-withdrawing tension spring 570 is locked to the shift-withdrawing lever 560 by a tension spring bolt 597, and the other end of the shift-withdrawing tension spring 570 is hooked to a lug 341 bent downward on the assembling plate 340, so that the shift-withdrawing tension spring 570 can accumulate an elastic force when the shift-withdrawing lever 560 is pushed by an external force and moves in one direction, and the shift-withdrawing lever 560 is reset in the opposite direction by the elastic force when the external force is cancelled. As shown in fig. 14 and 17, when the downshift lever 560 is linearly moved to the downshift position in a direction R3 by an external force, the downshift tension spring 570 accumulates an elastic force and pulls the downshift lever 560 by the elastic force when the external force is removed, thereby moving the downshift lever 560 to a release position in a direction R4 opposite to the direction R3.

In addition, a bolt 523 is sequentially inserted through the assembling plate 340 and the upper clamping plate 320 and screwed to the pawl pivot pin 521. In addition, the biasing element 550 is sleeved on the bolt 523 and disposed between the assembling plate 340 and the upper clamping plate 320, in the embodiment, the biasing element 550 is a torsion spring, and opposite ends of the torsion spring are respectively fixed to the assembling plate 340 and the protruding pillar 544 of the positioning pawl 540, so as to accumulate an elastic force when the positioning pawl 540 is pivoted in one direction by an external force, and push the protruding pillar 544 by the elastic force to enable the positioning pawl 540 to be reset in an opposite direction when the external force is cancelled. As shown in fig. 15 and 18, the positioning pawl 540 is pushed by the upper pushing post 5821 of the pushing portion 582 to pivot in the direction R2 to a disengaged position, in which the positioning teeth 542 of the positioning pawl 540 are away from the teeth (not numbered) of the traction ratchet 410, and in the process, the biasing element 550 accumulates a resilient force and pushes the protrusion 544 with the resilient force to pivot the positioning pawl 540 in the direction R1 opposite to the direction R2 to a positioning position when the external force is removed, so that the positioning teeth 542 engage the teeth (not numbered) of the traction ratchet 410. Due to the beveled arrangement of the positioning teeth 542 and the teeth (not numbered) of the traction ratchet 410, the positioning pawl 540 is urged away from the positioning position via the positioning teeth 542 as the traction ratchet 410 is rotated, for example, in the direction R1.

One end of the pull rod 590 is pivotally disposed on the protrusion 5831 of the linkage portion 583 of the pushing component 580, and the other end of the pull rod 590 is pivotally disposed on the gearshift lever 560, so that the gearshift lever 560 can pivot the pushing component 580 through the pull rod 590 when moving linearly between the gearshift position and the release position.

In the above, the components of the shift operating device 1 of the present invention are explained, and then, the linkage and assembly relationship between these components will be more fully understood by the operation explanation of the shift operating device 1.

First, a case of the shift operating device 1 during the shift operation will be described, please refer to fig. 10 to 13, fig. 10 to 11 are schematic diagrams of the shift operating device of fig. 2 at different viewing angles when the shift operating device is operated to a half of the shift operation, fig. 12 is a schematic diagram of the shift operating device of fig. 2 during the shift operation to the next two gears, and fig. 13 is a schematic diagram of the shift operating device of fig. 12 releasing the shift lever after the shift operation is completed. However, for the sake of simplicity, the position of the previous action is only partially indicated by the dashed-line forward shift lever 220 in the forward operation diagram. In addition, in the illustration of the shift operation, various arrows are used to indicate the operation direction of the element or elements, and different elements moving or rotating in the same direction can be indicated by the same direction numbers, for example, the shift lever 220 can be shifted in the direction R1 to drive the traction ratchet 410 to rotate in the direction R1.

As shown in fig. 10 to 11, when the user wants to shift, the user can shift the shift lever 220 in the direction R1 to drive the base 210 and the shift pawl 250 on the base 210 to rotate in the direction R1. At this time, the gear-shifting teeth 252 of the gear-shifting pawl 250 contact with the teeth (not numbered) of the traction ratchet 410 on a vertical plane, so that the traction ratchet 410 is forced to pivot in a rotational direction (i.e., the direction R1), and the traction ratchet 410, the positioning ratchet 420 and the pulley 430 pivot in the direction R1. Thus, rotation of the cable wheel 430 pulls a shift cable (not shown) to switch the bicycle chain to a different chainring.

It is noted that, as can be seen from a review of FIG. 9, during pivoting of the traction ratchet 410 in the direction R1, the stopping pawl 510 is biased by the biasing element 530 to remain in the disengaged position such that the stopping teeth 512 thereof do not engage and block rotation of the traction ratchet 410; on the other hand, as shown in fig. 11, the other teeth (not numbered) of the positioning ratchet 420 are in inclined contact with the positioning teeth 542 of the positioning pawl 540 to push the positioning pawl 540 from the positioning position to the disengaged position, so that the positioning pawl 540 does not prevent the positioning ratchet 420 from rotating. In addition, in the process from the gear shift of fig. 10 or 11 to the gear shift of fig. 12, each time the positioning tooth 542 of the positioning pawl 540 passes over the tooth of the positioning ratchet 420 and rebounds to the positioning position under the influence of the bias of the biasing element 550, the positioning tooth 542 collides with the positioning ratchet 420, and the third pushed portion 543 collides with the upper pushing column 5821 of the pushing piece 580, and these collisions generate the acoustic feedback, so that the user can determine whether the gear shift is successful or not or determine the number of gear shifts to be shifted by the gear shift.

It should be noted that when the positioning teeth 542 of the positioning pawl 540 are pushed open to the disengaged position by the positioning ratchet 420, the positioning teeth 542 are relatively close to the upper pushing column 5821 of the pushing piece 580, but since the upper pushing column 5821 has the abdicating notch 58211 facing the positioning teeth 542 (as shown in fig. 6), the positioning teeth 542 are prevented from touching the pushing piece 580 during the gear shifting process. That is, the pushing member 580 does not operate when the shift operating device 1 is in the forward gear.

In addition, it can be understood that the larger the rotation angle of the stay wheel 430 is, the bicycle can be trained to pass through a plurality of toothed discs at one time to achieve the effect of fast gear shifting. For example, in the gear shift operation shown in fig. 10 or 11-12, the gear shift lever 220 is shifted in the direction R1 to advance the gear by two gears, but in practice, the maximum single shift amount of the gear shift lever 220 in the direction R1 of the present embodiment can be up to four gears at a time, but the present invention is not limited thereto. For example, in other embodiments, the number of gears that can be advanced per toggle of the upshift lever 220 or the maximum number of gears that can be reached per single maximum toggle amount may be varied by changing the ratio between the pawl and the ratchet.

As shown in fig. 13, when the desired shift position is selected (fig. 12), the user can release the drive lever 220 to allow the accumulated elastic force of the biasing element 230 to pivot the base 210, the drive lever 220 and the drive pawl 250 in the direction R2 to return to the initial position. It should be noted that, in the process, the positioning ratchet 420 tends to pivot in the direction R2 under the influence of the bias of the biasing element 440, but since the third pushed portion 543 of the positioning pawl 540 is stopped by the upper pushing post 5821 of the pushing member 580, the positioning pawl 540 is stopped at the positioning position, the tooth portion of the positioning ratchet 420 cannot push the positioning tooth portion 542 of the positioning pawl 540, so that the positioning ratchet 420 cannot pivot in the direction R2 and is stopped at the position where the last lower sound is generated, and the traction ratchet 410, the positioning ratchet 420 and the pulley 430 are maintained at the positions shown in fig. 12. However, for the forward pawl 250, the forward tooth 252 of the forward pawl contacts the tooth of the traction ratchet 410 instead of being inclined, so that the forward tooth 252 can sequentially pass the tooth of the traction ratchet 410 as the forward lever 220 is released until the stop block 212 (fig. 3) of the base 210 abuts against the side edge of the lower clamping plate 310 to stop the base 210, the forward lever 220 and the forward pawl 250 at the initial position. At this time, the operation of the shift stage is completed.

Next, referring to fig. 16 to 19, a situation of the shift operating device 1 during a shift-back operation will be described, where fig. 14 to 16 are schematic diagrams of the shift operating device of fig. 2 at different viewing angles during the shift-back operation, and fig. 17 to 19 are schematic diagrams of the shift operating device of fig. 14 to 16 at different viewing angles when the shift lever is released after the shift-back operation is completed. Similarly, for the sake of simplicity, in the operation diagram of the reverse gear, the position of the previous action is only partially indicated by the reverse gear lever 560 which is a dashed line. In addition, in the illustration of the reverse gear operation, various arrows are used to indicate the actuation direction of the element or elements, but the arrow associated with the pull rod 590 indicates the intended actuation trend of the pull rod 590, and not the actual actuation direction of the pull rod 590.

As shown in fig. 14 to 16, when the user wants to reverse, the reverse lever 560 is activated, and the "activating the reverse lever 560" means that the reverse lever 560 is linearly moved from the release position to the reverse position in the direction R3 by applying a force and then the force is canceled, so that the reverse lever 560 is automatically reset from the reverse position to the release position.

In detail, during the linear movement of the reverse shift lever 560 from the release position to the reverse position along the direction R3, the pushing rod 5601 on the reverse shift lever 560 pushes the first pushed portion 253 of the forward pawl 250 to pivot the forward pawl 250 to disengage the forward tooth portion 252 from the traction ratchet 410, thereby releasing the restriction of the forward pawl 250 on the traction ratchet 410; the shift-reversing lever 560 pivots the pushing element 580 in the direction R1 via the pull rod 590, so that the lower pushing column 5822 and the upper pushing column 5821 of the pushing element 580 respectively push against the second pushed portion 513 of the stopping pawl 510 and the third pushed portion 543 of the positioning pawl 540. At this time, the positioning pawl 540 rotates to the disengaged position to be separated from the positioning ratchet 420; at the same time, however, the stopping pawl 510 is rotated to the stopping position to engage the stopping teeth 512 with the teeth of the traction ratchet 410 (as shown in fig. 16) to prevent the traction ratchet 410, the positioning ratchet 420 and the pulley 430 from rotating in the direction R2.

Then, as shown in fig. 17-19, when the user releases the downshift lever 560, the downshift lever 560 can be automatically returned to the release position along the direction R4 by the pulling force of the downshift tension spring 570. In the process, the pushing member 580 no longer pushes against the second pushed portion 513 of the stopping pawl 510, so that the stopping pawl 510 can be disengaged from the traction ratchet wheel 410 under the influence of the bias of the biasing member 530, so that the traction ratchet wheel 410 is no longer blocked by the biasing member 530 and can rotate in the direction R2 driven by the biasing member 440 together with the positioning ratchet wheel 420 and the pulling wheel 430, and one tooth of the positioning ratchet wheel 420 can pass over the positioning tooth 542 of the positioning pawl 540, but at this time, the positioning pawl 540 can rotate in the direction of the positioning position following the resetting of the pushing member 580 to engage with the positioning ratchet wheel 420, and at the same time, the forward pawl 250 is no longer pushed by the pushing rod 5601 on the reverse shift lever 560 and can return to the position engaging with the traction ratchet wheel 410 under the influence of the bias of the biasing member 270, so as to maintain the single shifting and releasing of the reverse shift lever 560 to be able to be shifted by only one shift. At this time, the operation of the reverse gear is completed.

In summary, in the aforementioned speed-change operation device, the shift lever is a rotary lever, and the shift lever is a linear lever, so that the shift lever is designed to help the rider distinguish between shift and shift, thereby avoiding the subsequent problems caused by confusion and misuse.

Claims

1. A shift operating device adapted to pull a cable for a bicycle, comprising:

a housing; and

a take-up assembly pivotally mounted to the housing and adapted to allow the bicycle cable to be wound;

the gear shifting pawl, the stopping pawl and the positioning pawl are pivoted on the shell and are separably meshed with the coiling assembly, and the gear shifting pawl, the stopping pawl and the positioning pawl move independently;

a gear shifting lever pivoted to the housing, wherein when the gear shifting lever is actuated, the gear shifting lever drives the gear shifting pawl to move so as to force the coiling assembly to rotate in a first rotation direction;

the withdrawing driving lever is linearly and movably arranged on the shell, and when the withdrawing driving lever is actuated, the withdrawing driving lever simultaneously drives the advancing pawl, the stopping pawl and the positioning pawl to move so as to enable the coiling assembly to rotate in a second rotation direction opposite to the first rotation direction; and

a link assembly connected between the stopping pawl and the positioning pawl and the gear-reversing shift lever, wherein when the gear-reversing shift lever is actuated, the gear-reversing shift lever moves the stopping pawl and the positioning pawl via the link assembly.

2. The shift operating device of claim 1, wherein the takeup assembly includes a positioning ratchet, a takeup wheel and a traction ratchet, the positioning ratchet, the takeup wheel and the traction ratchet being synchronously and pivotally stacked in sequence on the housing, the takeup wheel being adapted for winding the bicycle cable, the advance pawl and the stopping pawl being located on different sides of the traction ratchet and not simultaneously engaging the traction ratchet, and the positioning pawl being adapted to detachably engage the positioning ratchet.

3. The shift operating device of claim 2, wherein when the downshift lever is actuated, the downshift lever moves from a release position to a downshift position and then returns to the release position; when the gear-withdrawing shift lever moves from the releasing position to the gear-withdrawing position, the gear-withdrawing shift lever drives the positioning pawl and the gear-withdrawing pawl to be disengaged from the coiling assembly and only enables the stopping pawl to be engaged with the coiling assembly so as to prevent the coiling assembly from pivoting towards the second rotating direction; when the gear-withdrawing shift lever returns to the releasing position from the gear-withdrawing position, the gear-withdrawing shift lever enables the stopping pawl to be separated from the coiling assembly, and enables the positioning pawl and the gear-advancing pawl to be engaged with the coiling assembly to drive the coiling assembly to pivot towards the second rotating direction.

4. The shift operating device of claim 1, further comprising a biasing element disposed on the housing that normally provides a bias to actuate the shift lever to urge the shift pawl toward the takeup assembly.

5. The shift operating device of claim 1, further comprising a biasing member disposed on the housing that normally provides a bias to urge the kicker pawl into engagement with the take-up assembly.

6. The shift operating device of claim 1, further comprising a biasing member disposed on the housing that normally provides a bias to urge the pawl away from the take-up assembly.

7. The shift operating device of claim 1, further comprising a biasing member disposed on the housing that normally provides a bias to urge the positioning pawl into engagement with the take-up assembly.

8. The shift operating device according to claim 1, wherein the link assembly includes a pull rod and a pushing member, the pushing member includes a pivot portion, a pushing portion and a linking portion, the pivot portion is connected between the pushing portion and the linking portion and pivotally disposed on the housing, the pushing portion of the pushing member simultaneously abuts against the stopping pawl and the positioning pawl, and opposite ends of the pull rod are pivotally connected to the shift-canceling lever and the linking portion of the pushing member, respectively.

9. The shift operating device of claim 8, wherein the takeup assembly includes a positioning ratchet, a wire take-up wheel and a traction ratchet, the positioning ratchet, the wire take-up wheel and the traction ratchet being synchronously and pivotally stacked in sequence on the housing, the wire take-up wheel being adapted to wind the bicycle cable, the advance pawl and the stop pawl being located on different sides of the traction ratchet and not simultaneously engaging the traction ratchet, respectively, and the positioning pawl being adapted to detachably engage the positioning ratchet, wherein when the downshift lever is actuated, the downshift lever rotates the push member via the pull rod to cause the push member to simultaneously shift the stop pawl and the positioning pawl such that the stop pawl engages the traction ratchet and the positioning pawl disengages the positioning ratchet.

10. The shift operating device of claim 1, further comprising a downshift tension spring coupled between the housing and the downshift lever.

11. The shift operating device of claim 2, wherein the stopping pawl is coaxial with the positioning pawl.

12. A shift operating device adapted to pull a cable for a bicycle, comprising:

a housing; and

a take-up assembly comprising a positioning ratchet, a wire drawing wheel and a traction ratchet, wherein the positioning ratchet, the wire drawing wheel and the traction ratchet can be synchronously and pivotally stacked on the shell in sequence, and the wire drawing wheel is suitable for winding the bicycle cable;

a gear shifting lever pivoted to the housing, wherein when the gear shifting lever is actuated, the gear shifting lever drives the winding assembly to rotate in a first rotation direction;

a stopping pawl and a positioning pawl pivoted to the housing to be respectively detachably engaged with the traction ratchet wheel and the positioning ratchet wheel of the coiling assembly;

the withdrawing driving lever is linearly and movably arranged on the shell, and when the withdrawing driving lever is actuated, the withdrawing driving lever simultaneously drives the stopping pawl and the positioning pawl to move so as to enable the coiling assembly to rotate in a second rotating direction opposite to the first rotating direction; and

13. The shift operating device of claim 12, wherein when the downshift lever is actuated, the downshift lever moves from a release position to a downshift position and then returns to the release position; when the gear-reversing shift lever moves from the releasing position to the gear-reversing position, the gear-reversing shift lever drives the positioning pawl to be disengaged from the positioning ratchet wheel of the winding assembly, and only the stopping pawl is enabled to be engaged with the traction ratchet wheel of the winding assembly to prevent the winding assembly from pivoting towards the second rotating direction; when the gear-reversing shift lever returns to the releasing position from the gear-reversing position, the gear-reversing shift lever enables the stopping pawl to be separated from the traction ratchet wheel, and enables the positioning pawl to be meshed with the positioning ratchet wheel to drive the coiling assembly to pivot towards the second rotating direction.

14. The shift operating device of claim 12, further comprising a biasing member disposed on the housing that normally provides a bias to urge the stopping pawl away from the traction ratchet.

15. The shift operating device of claim 12, further comprising a biasing member disposed on the housing that normally provides a bias urging the positioning pawl to engage the positioning ratchet.

16. The apparatus of claim 12, wherein the linkage assembly comprises a pull rod and a pushing member, the pushing member comprises a pivot portion, a pushing portion and a linking portion, the pivot portion is connected between the pushing portion and the linking portion and pivotally disposed on the housing, the pushing portion of the pushing member simultaneously abuts against the stopping pawl and the positioning pawl, and opposite ends of the pull rod are pivotally connected to the shift-canceling lever and the linking portion of the pushing member respectively.

17. The shift operating device of claim 12, further comprising a downshift tension spring coupled between the housing and the downshift lever.

18. The shift operating device of claim 12, wherein the stopping pawl is coaxial with the positioning pawl.

19. A shift operating device adapted to pull a cable for a bicycle, comprising:

a housing; and

a stopping pawl and a positioning pawl pivoted on the shell to be separably meshed with the coiling assembly, and the stopping pawl and the positioning pawl move independently;

a gear-withdrawing deflector rod which is linearly and movably arranged on the shell; and

and the linkage assembly is connected between the stopping pawl and the positioning pawl and the gear-reversing shift lever, wherein when the gear-reversing shift lever is actuated, the gear-reversing shift lever simultaneously drives the stopping pawl and the positioning pawl to move through the linkage assembly so as to enable the coiling assembly to rotate in a second rotation direction opposite to the first rotation direction.

20. The shift operating device of claim 19, wherein when the downshift lever is actuated, the downshift lever moves from a release position to a downshift position and then returns to the release position; when the gear-withdrawing shift lever moves from the release position to the gear-withdrawing position, the gear-withdrawing shift lever drives the positioning pawl to be disengaged from the coiling assembly through the connecting rod assembly, and drives the stopping pawl to be engaged with the coiling assembly so as to prevent the coiling assembly from pivoting towards the second rotating direction; when the gear-withdrawing shift lever returns to the releasing position from the gear-withdrawing position, the gear-withdrawing shift lever enables the stopping pawl to be separated from the coiling assembly through the connecting rod assembly, and enables the positioning pawl to be meshed with the coiling assembly to drive the coiling assembly to pivot towards the second rotating direction.

21. The apparatus of claim 19, wherein the linkage assembly comprises a pull rod and a pushing member, the pushing member comprises a pivot portion, a pushing portion and a linking portion, the pivot portion is connected between the pushing portion and the linking portion and pivotally disposed on the housing, the pushing portion of the pushing member simultaneously abuts against the stopping pawl and the positioning pawl, and opposite ends of the pull rod are pivotally connected to the shift-canceling lever and the linking portion of the pushing member respectively.

22. The shift operating device of claim 19, further comprising a biasing element disposed on the housing that normally provides a bias to rotate the shift lever in the second rotational direction.

23. The shift operating device of claim 19, further comprising a biasing member disposed on the housing that normally provides a bias to urge the pawl away from the take-up assembly.

24. The shift operating device of claim 19, further comprising a biasing member disposed on the housing that normally provides a bias to urge the positioning pawl into engagement with the take-up assembly.

25. The shift operating device of claim 19, further comprising a downshift tension spring coupled between the housing and the downshift lever.

26. The shift operating device of claim 19, wherein the stopping pawl is coaxial with the positioning pawl.