A bicycle speed controller with instant gear shifting

Abstract

The invention discloses a bicycle speed change controller with instant gear shifting, comprising an upper fixed plate (1) and a lower fixed plate (2), wherein a cable reel (3) and a ratchet (4) are arranged between the upper fixed plate (1) and the lower fixed plate (2); a push rod assembly (5) and a release rod assembly (6) are arranged below the lower fixed plate (2), a return spring (7) is connected between the push rod assembly (5) and the release rod assembly (6), and a push block (8) is connected to the push rod assembly (5) for pushing the ratchet (4) to rotate; the invention is characterized in that a shifting rod (9) is connected to the lower fixed plate (2), and when the release rod assembly (6) rotates, the shifting rod (9) can push the shifting rod (9) to move, and after the shifting rod (9) moves, the push block (8) can be pushed away from the ratchet (4). The invention can prevent the bicycle from getting stuck when shifting back, shorten the shifting pushing stroke, reduce the fatigue of the shifting operation, reduce the number of parts, and facilitate assembly, and has the advantages of high production efficiency and good assembly stability.

Description

Technical Field

[0001] The invention relates to a bicycle speed change controller, in particular to a bicycle speed change controller capable of instant gear shifting. Background Art

[0002] A bicycle transmission controller generally refers to a handlebar-mounted shifter, throttle, or hand-shifter. This allows the front or rear derailleur to swing by manually pulling and releasing the shift cable through the forward / reverse lever, thereby shifting gears. Existing shifters include a cable reel for winding the shift cable. A ratchet is fixed to the reel, which has two sets of teeth. One set of teeth engages with a push block attached to a push rod (generally used for shifting gears), allowing the reel to rotate and wind the cable. The other set of teeth engages with a pawl, which keeps the reel in a fixed position. The pawl is controlled by a release lever. When the release lever pushes the pawl, the pawl disengages from the meshing tooth, causing the ratchet to retract to the next tooth and then engage with the pawl. Most existing finger shifters require a push block to disengage from the ratchet after shifting, ensuring that the push block can retract normally when the release lever is operated to retract and release. Therefore, existing finger shifters require a protrusion on the fixed plate corresponding to the push block, which is used to push the reset push block out of the ratchet meshing state after the shift is completed. Therefore, each time a gear is shifted, the push block needs to move a distance to disengage from the protrusion of the fixed plate and engage with the ratchet (equivalent to the distance of half a ratchet tooth) before it can push the ratchet to rotate and shift. Since the push block on the push rod must first engage before shifting, this increases the angle of the push rod each time, which can easily fatigue the pushing finger. Therefore, existing bicycle transmission controllers have problems such as easy jamming of downshifts, long shifting stroke, and easy fatigue when shifting. Summary of the Invention

[0003] The object of the present invention is to provide a bicycle speed controller with instant gear shifting, which can not only prevent the gear from getting stuck during downshifting, but also shorten the gear shifting stroke and reduce the fatigue of the gear shifting operation.

[0004] The technical solution of the present invention is: a bicycle speed change controller with instant gear shifting, comprising an upper fixed plate and a lower fixed plate, with a cable reel and a ratchet arranged between the upper fixed plate and the lower fixed plate; a push rod assembly and a release rod assembly are arranged below the lower fixed plate, a return spring is connected between the push rod assembly and the release rod assembly, and a push block for pushing the ratchet to rotate is connected to the push rod assembly; it is characterized in that: a shift rod is connected to the lower fixed plate, and when the release rod assembly rotates, the shift rod can push the shift rod to move, and after the shift rod moves, it can push the push block to disengage from the ratchet.

[0005] In the aforementioned bicycle speed controller with instant gear shifting, the shifting lever is rotatably connected to the lower fixed plate.

[0006] In the aforementioned instant shifting bicycle speed controller, the shift lever is located below the ratchet, the top end of the push block head corresponds to the position of the ratchet, and the bottom end of the push block head corresponds to the position of the shift lever.

[0007] In the aforementioned instant shifting bicycle speed controller, the ratchet is provided with a shifting tooth and a release tooth, the push block on the push rod assembly is engaged with the shifting tooth, and the release rod assembly is provided with a pawl engaged with the release tooth.

[0008] In the aforementioned instant shifting bicycle speed controller, a sink is provided at the axis of the push rod assembly or the axis of the release lever assembly, and the sink separates the release lever assembly from the push rod assembly.

[0009] In the aforementioned bicycle speed controller with instant gear shifting, the height of the sunken platform is greater than or equal to the thickness of the return spring.

[0010] In the aforementioned bicycle speed controller with instant gear shifting, the sinking platform and the push rod assembly or the release rod assembly are an integrated structure.

[0011] In the aforementioned bicycle speed controller with instant gear shifting, the cable reel, ratchet, push rod assembly and release lever assembly are arranged coaxially, and mutually connected locking bolts and nuts are provided on the axis; the locking bolts and nuts connect and fix the upper fixing plate, lower fixing plate, cable reel, ratchet, push rod assembly and release lever assembly from the upper and lower ends.

[0012] In the aforementioned bicycle speed controller with instant gear shifting, a locking block for limiting the rotation of the locking bolt is connected to the upper fixing plate.

[0013] In the aforementioned instant gear shifting bicycle controller, one end of the return spring is connected to the push rod assembly, and the other end is connected to the release lever assembly; when the push rod assembly or the release lever assembly rotates to shift gears, the return spring is compressed to form a restoring force to reset the push rod assembly or the release lever assembly.

[0014] Compared with the prior art, the present invention improves the existing bicycle speed controller structure. A shift lever is provided on the lower fixed plate, which can drive the shift lever to move by rotating the release lever assembly (the shift lever can be rotated or moved), and then the shift lever is used to push the push block to disengage from the ratchet, thereby ensuring that the push block is disengaged from the ratchet during downshifting, preventing jamming during downshifting, and improving the smoothness of downshifting; moreover, since the shift lever can push the push block to a position disengaged from the ratchet (i.e., releasing the meshing state with the speed gear), there is no need to disengage the push block from the meshing state with the speed gear when resetting the gear. Therefore, when shifting, the push block in the original speed controller does not need to move a certain distance to engage with the speed gear (equivalent to the distance of half a speed gear), shortening the gear shifting pushing stroke, thereby reducing the fatigue of the gear shifting operation. In addition, the shift lever is arranged to be rotatably connected to the lower fixed plate, which can facilitate the shift lever to push the push block to rotate, ensuring the smoothness of the push block disengaging from the meshing state with the speed gear; by arranging the shift lever below the ratchet, the top and bottom ends of the push block head correspond to the ratchet and the shift lever respectively, so that when the shift lever drives the push block to move, the push block can be synchronously disengaged from the ratchet meshing position, thereby improving the synchronization and timeliness of the push block disengaging from the ratchet meshing state, and further ensuring that it will not get stuck when downshifting.

[0015] The present invention also provides a sinker at the axis of the push rod assembly or the axis of the release rod assembly, and utilizes the sinker structure to separate the push rod assembly and the release rod assembly, eliminating the assembly of the bushing and spacer in the original bicycle speed controller, reducing the number of installed parts, facilitating assembly, and improving production efficiency; the height of the sinker is also set to be greater than or equal to the thickness of the reset spring, which can facilitate the installation of the reset spring and its reset, deformation and other actions, without the need for installation gap debugging, further facilitating assembly; by arranging locking bolts and nuts to connect and fix the upper fixing plate, the lower fixing plate, the winding reel, the ratchet, the push rod assembly and the release rod assembly, it is convenient to control the size gap, thereby facilitating assembly and improving production efficiency; at the same time, in conjunction with the setting of the locking block, the locking bolt can be anti-rotation positioned after the size gap is controlled, limiting the loosening of the locking bolt due to vibration during the bicycle driving process, and ensuring the assembly stability of the overall structure.

[0016] In summary, the present invention can not only prevent jamming during gear shifting, but also shorten the gear shifting pushing stroke, reduce gear shifting operation fatigue, reduce parts and facilitate assembly, and also has the advantages of high production efficiency and good assembly stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the present invention after assembly;

[0019] Figure 3 It is a schematic diagram of the connection structure at the lever;

[0020] Figure 4 This is a schematic diagram of the structure before shifting into gear;

[0021] Figure 5 It is a schematic diagram of the structure after shifting into gear;

[0022] Figure 6 This is the working principle diagram of the lever;

[0023] Figure 7 It is a schematic diagram of the starting state of shifting in or the completion state of shifting out;

[0024] Figure 8 It is a state diagram during the process of shifting in or out of gear;

[0025] Figure 9 It is a schematic diagram of the downshift start state or the upshift completion state;

[0026] Figure 10 This is a schematic diagram of the structure of the lever when shifting down;

[0027] Figure 11 This is a schematic diagram of the push block state of the existing speed change controller after shifting into gear and resetting;

[0028] Figure 12 The utility model is a schematic diagram of the connection structure between the push block and the raised part of the existing speed change controller for shifting and resetting.

[0029] The marks in the accompanying drawings are: 1-upper fixed plate, 2-lower fixed plate, 3-winding reel, 4-ratchet, 5-push rod assembly, 6-release rod assembly, 7-reset spring, 8-push block, 9-shift rod, 10-speed gear, 11-release tooth, 12-pawl, 13-sink, 14-locking bolt, 15-nut, 16-locking block; 17-protrusion. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to the examples, but they are not intended to limit the present invention.

[0031] Embodiment. A bicycle speed controller with instant shifting is constructed as follows Figures 1 to 10 As shown, it includes an upper fixed plate 1 and a lower fixed plate 2, and a winding reel 3 and a ratchet 4 are arranged between the upper fixed plate 1 and the lower fixed plate 2; a push rod assembly 5 and a release rod assembly 6 are arranged below the lower fixed plate 2, a reset spring 7 is connected between the push rod assembly 5 and the release rod assembly 6, and a push block 8 for pushing the ratchet 4 to rotate is connected to the push rod assembly 5; it is characterized in that: a detent rod 9 is connected to the lower fixed plate 2, and when the release rod assembly 6 is rotated, it can push the detent rod 9 to move, and after the detent rod 9 moves, it can push the push block 8 to disengage from the ratchet 4.

[0032] The shift lever 9 is rotatably connected to the lower fixed plate 2; the shift lever 9 is located below the ratchet 4, the top end of the push block 8 corresponds to the position of the ratchet 4, and the bottom end of the push block 8 corresponds to the position of the shift lever 9. The ratchet 4 is provided with a shift tooth 10 and a release tooth 11, the push block 8 on the push rod assembly 5 engages with the shift tooth 10, and the release rod assembly 6 is provided with a pawl 12 that engages with the release tooth 11. A sink 13 is provided at the axis of the push rod assembly 5 or the axis of the release rod assembly 6, and the sink 13 separates the release rod assembly 6 and the push rod assembly 5. The height of the sink 13 is greater than or equal to the thickness of the reset spring 7. The sink 13 and the push rod assembly 5 or the release rod assembly 6 are an integrated structure. The cable reel 3, ratchet 4, push rod assembly 5, and release lever assembly 6 are coaxially arranged, with a locking bolt 14 and nut 15 interconnected on the axis. The locking bolt 14 and nut 15 securely connect the upper and lower fixing plates 1, 2, cable reel 3, ratchet 4, push rod assembly 5, and release lever assembly 6. A locking block 16 is attached to the upper fixing plate 1 to limit the rotation of the locking bolt 14. A return spring 7 is connected to the push rod assembly 5 at one end and to the release lever assembly 6 at the other end. When the push rod assembly 5 or the release lever assembly 6 rotates to change speed, the return spring 7 compresses, generating a restoring force that resets the push rod assembly 5 or the release lever assembly 6.

[0033] Working principle: During assembly, the sinker 13 formed by integrated stamping can separate the push rod assembly 5 and the release rod assembly 6. The top surface of the sinker 13 rests against the bottom surface of the release rod assembly 6, so that a gap with a height of the sinker 13 is formed between the push rod assembly 5 and the release rod assembly 6, and the height of the gap is greater than or equal to the thickness of the reset spring 7, which can facilitate the installation of the reset spring 7 and will not affect the deformation action (compression and reset) of the reset spring 7 during operation. There is no need to adjust the installation gap, which facilitates assembly. After assembling the other components in sequence (upper fixed plate 1, winding reel 3, ratchet 4, lower fixed plate 2), together with the push rod assembly 5 and the release rod assembly 6, they are all connected and fixed by the locking bolt 14 and the nut 15. By adjusting the connection position between the locking bolt 14 and the nut 15, the size gap of the overall structure can be adjusted, which is convenient for assembly. Finally, by inserting the locking block 16 on the upper fixed plate 1, the side plane of the locking block 16 is contacted and locked with the side plane of the outer hexagon of the head of the locking bolt 14, which can prevent the locking bolt 14 from rotating; thereby completing the assembly and improving production efficiency.

[0034] When shifting, if Figure 4 、 5 , 6, 7, 8 and 9, the push rod assembly 5 is turned counterclockwise to push the push block 8 to push the speed gear 10 counterclockwise to drive the ratchet 4 to rotate, and the ratchet 4 and the winding disk 3 rotate together, thereby controlling the speed cable to shift and shift (at the beginning of the shift, the push block 8 is in a state of meshing with the speed gear 10, and as shown in FIG. Figure 11In the original speed controller, the push block 8 is in a position where the speed gear 10 is out of engagement. After the shift action is completed, the push rod assembly 5 is reset under the action of the reset spring 7, and the push block 8 is reset to the position where the next speed gear 10 on the ratchet 4 is engaged (i.e., according to Figure 7 、 Figure 8 、 Figure 9 The sequence of operation is to advance the gear)( Figure 4 and Figure 7 Because it is the lowest gear state and can only shift up but not down, the shift tooth 10 pushed by it coincides with the end face of the last release tooth 11); at this time, the release tooth 11 rotates and engages with the next tooth with the pawl 12 to fix the gear position; thereby shortening the push block stroke when shifting (shortening the stroke of half a shift tooth), making it easier to shift the next gear.

[0035] When withdrawing, if Figure 4 、 5 As shown in Figures 6, 7, 8, 9 and 10, the release lever assembly 6 is toggled clockwise, which pushes the pawl 12 to rotate clockwise. The pawl 12 disengages from the release tooth 11 on the ratchet 4, and the ratchet 4 rotates clockwise along with the winding reel 3. At the same time, the rotation of the release lever assembly 6 pushes the shift lever 9 to rotate, which pushes the push block 8 to rotate, causing the push block 8 to disengage from the shift tooth 10, preventing the push block 8 from blocking the rotation of the ratchet 4 and ensuring smooth downshifting. The release lever assembly 6 is reset under the action of the reset spring 7, and the pawl 12 engages with the next release tooth 11 of the ratchet 4 to lock the position of the ratchet 4, completing the downshifting operation. After downshifting is completed, the release lever assembly 6 is reset, and the push block 8 returns to its original position under the action of the elastic force. The push block 8 pushes the shift lever 9 to rotate in the opposite direction, causing the shift lever 9 to rotate toward the release lever assembly 6, and the push block 8 re-engages with the shift tooth 10, facilitating the next upshifting or downshifting operation.

Claims

1. A bicycle speed controller with instant gear shifting, comprising an upper fixed plate (1) and a lower fixed plate (2), wherein a cable reel (3) and a ratchet (4) are disposed between the upper fixed plate (1) and the lower fixed plate (2); a push rod assembly (5) and a release lever assembly (6) are disposed below the lower fixed plate (2), a return spring (7) is connected between the push rod assembly (5) and the release lever assembly (6), and a push block (8) is connected to the push rod assembly (5) for driving the ratchet (4) to rotate; the characteristics of the invention are as follows: The lower fixed plate (2) is connected with a shifting rod (9), and when the release lever assembly (6) rotates, the shifting rod (9) can be pushed to move, and after the shifting rod (9) moves, the push block (8) can be pushed to disengage from the ratchet (4); the shifting rod (9) is rotationally connected to the lower fixed plate (2); the shifting rod (9) is located below the ratchet (4), the top end of the head of the push block (8) corresponds to the position of the ratchet (4), and the bottom end of the head of the push block (8) corresponds to the position of the shifting rod (9).

2. The bicycle speed controller with instant shifting according to claim 1, characterized in that: The ratchet (4) is provided with a speed-changing tooth (10) and a release tooth (11); the push block (8) on the push rod assembly (5) is engaged with the speed-changing tooth (10); and the release rod assembly (6) is provided with a pawl (12) which is engaged with the release tooth (11).

3. The bicycle speed controller with instant shifting according to claim 1, characterized in that: A sinking platform (13) is provided at the axis center of the push rod assembly (5) or the axis center of the release rod assembly (6), and the sinking platform (13) separates the release rod assembly (6) and the push rod assembly (5).

4. The bicycle speed controller with instant shifting according to claim 3, characterized in that: The height of the sinking platform (13) is greater than or equal to the thickness of the return spring (7).

5. The bicycle speed controller with instant shifting according to claim 3, characterized in that: The sinking platform (13) and the push rod assembly (5) or the release rod assembly (6) are an integrated structure.

6. The bicycle speed controller with instant shifting according to claim 1, characterized in that: The cable reel (3), ratchet (4), push rod assembly (5) and release lever assembly (6) are coaxially arranged, and mutually connected locking bolts (14) and nuts (15) are arranged on the axis; the locking bolts (14) and nuts (15) connect and fix the upper fixing plate (1), the lower fixing plate (2), the cable reel (3), the ratchet (4), the push rod assembly (5) and the release lever assembly (6) from upper and lower ends.

7. The bicycle speed controller with instant shifting according to claim 6, characterized in that: The upper fixing plate (1) is connected to a locking block (16) for limiting the rotation of the locking bolt (14).

8. A bicycle speed controller with instant shifting according to any one of claims 1 to 7, characterized in that: One end of the return spring (7) is connected to the push rod assembly (5), and the other end is connected to the release lever assembly (6); when the push rod assembly (5) or the release lever assembly (6) rotates to change speed, the return spring (7) is compressed to form a restoring force that resets the push rod assembly (5) or the release lever assembly (6).

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