Bicycle control device with reasonable layout

Abstract

The invention relates to a bicycle control device reasonable in layout, and provides the bicycle control device reasonable in layout in order to solve the problem that existing variable speed adjustment is limited by the size of a ratchet disc, the bicycle control device reasonable in layout comprises a shell provided with a transverse axis, and a base provided with a connecting shaft is arranged in the shell; the connecting shaft is provided with a wire pulling disc and a ratchet disc rotating synchronously with the wire pulling disc. Ratchets are arranged on the periphery of the ratchet disc, a forward pawl and a reverse pawl are arranged on the two sides of the ratchet disc respectively, a forward rod and a reverse wrench are arranged on the shell, the forward rod is in linkage with the forward pawl through a forward shifting piece, and the reverse wrench is in linkage with the reverse pawl through a reverse shifting piece. The pull wire disc, the ratchet disc, the forward gear shifting piece and the backward gear shifting piece are sequentially arranged on the connecting shaft in a sleeved mode, and the connecting shaft is parallel to the transverse axis or forms an acute angle with the transverse axis. The stay wire disc, the ratchet disc, the forward gear shifting piece and the backward gear shifting piece are sequentially stacked on the connecting shaft, the layout is reasonable, and the size of the ratchet disc is not limited.

Description

Technical Field

[0001] The invention belongs to the field of bicycle accessories, and in particular relates to a bicycle control device with a reasonable layout. Background Art

[0002] Existing bicycle control devices are usually arranged on the handlebars, and the braking, shifting and retarding functions are realized by the handles arranged thereon. In the existing patent structure, the speed change cable is arranged on the cable pull disk, and a ratchet disk that rotates synchronously with the cable pull disk is arranged below the cable pull disk, and the shifting and retarding are realized by driving the rotation of the ratchet disk. For example, the existing patent CN 205632877 U proposes a bicycle control device, but the rotating shaft of the cable pull disk is perpendicular to the handlebar, that is, the size of the entire drive device extends laterally, but this structural arrangement limits the size of the cable pull disk and the ratchet disk, so that the cable pull disk and the ratchet disk need to be more compact to meet the use requirements, otherwise the size of the shell accommodating the cable pull disk and the ratchet disk will have to be made very large, affecting the riding feel, and the small parts have high requirements for actual production and processing, and high assembly precision, thereby increasing the production cost. Summary of the invention

[0003] In view of the problem that the speed change driving device in the existing speed change adjuster is horizontally arranged in the shell, resulting in limited size and high precision requirements, the present invention provides a bicycle control device with a reasonable layout, which eliminates the influence of the ratchet plate size, processing accuracy and assembly accuracy on the speed change by changing the setting direction of the ratchet plate.

[0004] The technical solution adopted by the present invention is as follows: a bicycle control device with a reasonable layout, comprising a shell with a transverse axis, a base with a connecting shaft inside the shell, a wire pulling disk and a ratchet disk rotating synchronously with the wire pulling disk on the connecting shaft; ratchets are provided on the periphery of the ratchet disk, and a gear advance pawl and a gear retreat pawl are respectively provided on both sides of the ratchet disk, a gear advance rod and a gear retreat wrench are provided on the shell, the gear advance rod is linked to the gear advance pawl through a gear advance paddle, and the gear retreat wrench is linked to the gear retreat pawl through a gear retreat paddle, the wire pulling disk, the ratchet disk, the gear advance paddle and the gear retreat paddle are sequentially sleeved on the connecting shaft, and the connecting shaft is arranged parallel to the transverse axis or at an acute angle.

[0005] The transverse axis is placed horizontally along the outer shell, and the cable pull disc, ratchet disc, shift paddle and shift back paddle are stacked on the connecting shaft in sequence. The connecting shaft is parallel to or at an acute angle to the transverse axis. Compared with the prior art in which the transfer shaft is perpendicular to the handlebar, the present application can use a single-piece ratchet disc with multiple teeth. The size of the ratchet disc extends along the vertical direction of the outer shell, which can meet the multi-stage adjustment requirements. The layout is reasonable and the size of the ratchet disc can be appropriately increased, which can be suitable for mountain bikes and road bikes.

[0006] Furthermore, the shift paddle is linked to the shift lever through a bevel gear set, the shift lever is swingably arranged on the housing, and the swing of the shift lever drives the bevel gear set, thereby pushing the shift pawl linked to the shift paddle to slide along the ratchet teeth on the ratchet plate in sequence, so that the ratchet plate rotates along the first direction to achieve shifting. The use of the bevel gear set cleverly changes the original shift lever that can only rotate along the axial direction of the ratchet plate to swing along the axial direction of the ratchet plate, which is not only reasonable in layout, but also can achieve the purpose of layer-by-layer arrangement, effectively weakening the influence of the size of the ratchet plate on the speed change.

[0007] Further, the helical gear set includes a first helical gear rotatably connected to the connecting shaft and a second helical gear rotatably connected to the outer shell, the first helical gear rotates synchronously with the shift paddle, and the second helical gear has an outwardly extending linkage arm, and the linkage arm is arranged on the swing path of the shift lever.

[0008] Furthermore, the first bevel gear is circular and the second bevel gear is fan-shaped. The circular first bevel gear is arranged on the rotating shaft and is coaxially arranged with the ratchet disc, which can ensure that the entire structure is as symmetrical as possible to avoid excessive deviation of the center of gravity and affect the stability of the structure.

[0009] Furthermore, the shift-down wrench is rotatably arranged on the housing, and a protrusion is provided at the bottom thereof. The shift-down wrench is rotated so that the protrusion contacts the shift-down paddle, thereby driving the shift-down pawl to slide along the ratchet teeth on the ratchet plate in sequence, so that the ratchet plate rotates in a second direction opposite to the first direction to achieve shift-down.

[0010] Furthermore, a brake handle is arranged on the housing, the gear lever is rotatably arranged on the brake handle, and the rotation direction of the brake handle is different from the swing direction of the gear lever. The gear lever can rotate in the same direction as the brake handle, and the adjustment function of the gear lever is not affected when the brake function is realized.

[0011] Furthermore, the shell is provided with a wiring hole, the brake handle is located on a side of the shell opposite to the wiring hole, one end of the brake line is connected to the brake handle, and the other end passes through the wiring hole.

[0012] Further, the gear-entry pawl is arranged on the gear-entry paddle. The gear-entry pawl is arranged on the gear-entry paddle through a pin shaft, a first spring is arranged on the pin shaft, and the gear-entry pawl is returned by the first spring to achieve step-by-step adjustment.

[0013] Furthermore, the retraction pawl is arranged on the base, and the base is fixed in the shell.

[0014] Furthermore, a torsion spring is provided on the base, one end of the torsion spring is connected to the shift-down paddle, and the other end is connected to the shift-in paddle. The shift-down paddle and the shift-in paddle can be returned to their original positions by the limiting of the torsion spring, so as to achieve adjustment.

[0015] The beneficial effects of the present invention are as follows: the present application is a bicycle control device with a reasonable layout, in which the cable pull disc, ratchet disc, shift paddle and shift reversal paddle are stacked in sequence on the connecting shaft, and the connecting shaft is parallel to the transverse axis or arranged at an acute angle, that is, the connecting shaft is parallel to the central axis of the handlebar clamp. The present application can use a single-piece ratchet disc with multiple teeth, and the size of the ratchet disc extends along the vertical direction of the outer shell, which can meet the multi-stage adjustment requirements. The layout is reasonable and the size of the ratchet disc can be appropriately increased, and it can be suitable for mountain bikes and road bikes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a relationship diagram between the transverse axis and the connecting axis;

[0017] Figure 2 A schematic diagram of the structure of a bicycle control device with a reasonable layout;

[0018] Figure 3 A schematic diagram of the internal structure of a bicycle control device with a reasonable layout;

[0019] Figure 4 Schematic diagram of the gear-entry pawl structure;

[0020] Figure 5 Schematic diagram of the structure of the gear-reversing pawl;

[0021] Figure 6 A schematic diagram of the assembly structure of a bicycle control device with a reasonable layout;

[0022] Among them, 1-housing; 11-transverse axis; 12-wiring hole; 2-base; 21-connecting shaft; 22-cable pull drum; 23-ratchet disk; 231-ratchet; 24-shift pawl; 241-first spring; 242-first pin; 25-shift reversal pawl; 251-first reversal pawl; 252-second reversal pawl; 253-second pin; 254-second spring; 26-torsion spring; 3-shift paddle; 4-reversal paddle; 41-push rod; 5-shift lever; 6-reversal wrench; 61-protrusion; 7-bevel gear set; 71-first bevel gear; 72-second bevel gear; 721-linkage arm; 8-brake handle; 81-third pin; 9-brake cable; 10-speed cable. DETAILED DESCRIPTION

[0023] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the accompanying drawings of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0024] A bicycle control device with a reasonable layout, Figures 1 to 6 As shown, it includes a shell 1 with a transverse axis 11, a base 2 with a connecting shaft 21 is arranged in the shell 1, a wire pull drum 22 and a ratchet disk 23 rotating synchronously with the wire pull drum 22 are arranged on the connecting shaft 21; ratchets 231 are arranged on the periphery of the ratchet disk 23, and a shift-in pawl 24 and a shift-out pawl 25 are respectively arranged on both sides of the ratchet disk 23; a shift-in rod 5 and a shift-out spanner 6 are arranged on the shell 1, the shift-in rod 5 is linked to the shift-in pawl 24 through a shift-in paddle 3, and the shift-out spanner 6 is linked to the shift-out pawl 25 through a shift-out paddle 4, the wire pull drum 22, the ratchet disk 23, the shift-in paddle 3 and the shift-out paddle 4 are sequentially sleeved on the connecting shaft 21, the connecting shaft 21 is parallel to the transverse axis 11 or arranged at an acute angle, and the connecting shaft 21 in this embodiment is also parallel to the central axis of the handlebar clamp.

[0025] The transverse axis mentioned in the present application is actually a virtual line. When the bicycle control device with a reasonable layout of the present application is installed on the handlebar of the bicycle, the transverse axis is parallel to the horizontal direction. The transverse axis 11 is arranged horizontally along the outer shell 1, perpendicular to the left and right surfaces of the outer shell 1, and the cable pull disk 22, the ratchet disk 23, the shift paddle 3 and the shift back paddle 4 are stacked on the connecting shaft 21 in sequence. The connecting shaft 21 is parallel to the transverse axis 11 or arranged at an acute angle. Compared with the prior art in which the transfer shaft is perpendicular to the handlebar, the present application can use a single-piece ratchet disk 23 with multiple teeth. The size of the ratchet disk 23 extends along the vertical direction of the outer shell 1, which can meet the multi-stage adjustment requirements. The layout is reasonable and the size of the ratchet disk 23 can be appropriately increased, which can be suitable for mountain bikes and road bikes.

[0026] The shift-in paddle 3 is linked with the bevel gear set 7, and the shift-in rod 5 can swing in a direction parallel to the connecting shaft 21. When the shift-in rod 5 swings, it can drive the bevel gear set 7, and the bevel gear set 7 is linked with the shift-in paddle 3, thereby pushing the shift-in pawl 24 linked with the shift-in paddle 3 to slide along the ratchet teeth 231 on the ratchet plate 23 in sequence, so that the ratchet plate 23 rotates to achieve shifting. The use of the bevel gear set 7 cleverly changes the original shift-in rod 5 that can only rotate along the axial direction of the ratchet plate 23 into swinging along the axial direction of the ratchet plate 23, which is not only reasonably arranged, but also can achieve the purpose of layer-by-layer arrangement, effectively weakening the influence of the size of the ratchet plate 23 on the speed change.

[0027] The helical gear set 7 includes a first helical gear 71 rotatably connected to the connecting shaft 21 and a second helical gear 72 rotatably connected to the housing 1, the first helical gear 71 rotates synchronously with the shift paddle 3, and the second helical gear 72 has a linkage arm 721 extending outwards, and the linkage arm 721 is arranged on the swing path of the shift lever 5. The first helical gear 71 is connected to the connecting shaft 21, and the linkage shift paddle 3 swings when shifting, and the linkage arm 721 on the second helical gear 72 extends outwards and is arranged on the swing path of the shift lever 5, and only interferes with the linkage arm 721 when the shift lever 5 swings.

[0028] The first bevel gear 71 is circular, and the second bevel gear 72 is fan-shaped. The circular first bevel gear 71 is arranged on the rotating shaft and is coaxially arranged with the ratchet plate 23 to ensure that the entire structure is as symmetrical as possible to avoid excessive deviation of the center of gravity and affect the stability of the structure.

[0029] The gear-reversing lever 6 is rotatably disposed on the housing 1, and a protruding portion 61 is provided at the bottom thereof. When the gear-reversing lever 6 is rotated inwardly, the protruding portion 61 abuts against the gear-reversing paddle 4, thereby driving the gear-reversing pawl 25 to slide along the ratchet teeth 231 on the ratchet plate 23 in sequence, so that the ratchet plate 23 rotates in a second direction opposite to the first direction to achieve gear reversal. The backshift pawl 25 includes a first backshift pawl 251 and a second backshift pawl 252 which are arranged in opposite directions, and the first backshift pawl 251 and the second backshift pawl 252 are rotatably arranged on the second pin shaft 253 and return to their original positions through the second spring 254. The backshift paddle 4 is provided with a push rod 41, and the push rod 41 is located between the first backshift pawl 251 and the second backshift pawl 252. When the backshift wrench 6 is pressed, the protruding portion 61 contacts the push rod 41, and then the push rod 41 pushes the first backshift pawl 251 and the second backshift pawl 252 away in two different directions, so that the ratchet plate 23 rotates one ratchet 231, thereby realizing backshifting.

[0030] The gear feed lever 5 is rotatably arranged on the brake handle 8, and the gear feed lever 5 can rotate in the same direction as the brake handle 8, and the rotation direction of the brake handle 8 is different from the swing direction of the gear feed lever 5. The brake handle 8 is rotatably arranged on the housing 1 through the third pin shaft 81, and the connection point between the brake line 9 and the brake handle 8 and the pressing point of the brake handle 8 are arranged on both sides of the third pin shaft 81. When the brake handle 8 is pressed, the brake line 9 is pulled. The brake handle 8 is provided with a positioning shaft (not shown in the figure) parallel to the third pin shaft 81, and the gear feed lever 5 is rotatably arranged on the positioning shaft, and the rotation direction of the brake handle 8 is different from the swing direction of the gear feed lever 5. The gear feed lever 5 can rotate in the same direction as the brake handle 8, and the adjustment function of the gear feed lever 5 is not affected when the braking function is realized.

[0031] The housing 1 is provided with a wiring hole 12 , and the brake handle 8 is located on a side of the housing 1 opposite to the wiring hole 12 . One end of the brake wire 9 is connected to the brake handle 8 , and the other end passes through the wiring hole 12 .

[0032] The gear-input pawl 24 is arranged on the gear-input paddle 3. The gear-input pawl 24 is arranged on the gear-input paddle 3 through a first pin shaft 242, a first spring 241 is arranged on the first pin shaft 242, and the gear-input pawl 24 is returned by the first spring 241 to achieve step-by-step adjustment.

[0033] The backshift pawl 25 is disposed on the base 2 , and the base 2 is fixed in the housing 1 .

[0034] The base 2 is provided with a torsion spring 26, one end of which is connected to the shift-down paddle 4, and the other end is connected to the shift-in paddle 3. The shift-down paddle 4 and the shift-in paddle 3 can be returned to their original positions by the limit of the torsion spring 26, so as to achieve step-by-step adjustment. The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A bicycle speed changing device, characterized in that: The invention comprises a housing (1) provided with a transverse axis (11), a base (2) provided with a connecting shaft (21) in the housing (1), a wire pulling disc (22) and a ratchet disc (23) which rotates synchronously with the wire pulling disc (22) being provided on the connecting shaft (21); ratchet teeth (231) are provided on the periphery of the ratchet disc (23), a gear-advancing pawl (24) and a gear-reversing pawl (25) are provided on both sides of the ratchet disc (23), and a gear-advancing pawl (24) and a gear-reversing pawl (25) are provided on the housing (1). A shift-in lever (5) and a shift-out lever (6), wherein the shift-in lever (5) is linked to the shift-in pawl (24) via a shift-in paddle (3), and the shift-out lever (6) is linked to the shift-out pawl (25) via a shift-out paddle (4). The cable pull disc (22), the ratchet disc (23), the shift-in paddle (3) and the shift-out paddle (4) are sequentially sleeved on the connecting shaft (21), and the connecting shaft (21) is arranged parallel to or at an acute angle to the transverse axis (11).

2. The bicycle speed change device according to claim 1, characterized in that: The shift paddle (3) and the shift lever (5) are linked via a bevel gear set (7); the shift lever (5) is swingably arranged on the housing (1); the swinging of the shift lever (5) drives the bevel gear set (7), thereby pushing a shift pawl (24) linked to the shift paddle (3) to slide along ratchet teeth (231) on a ratchet plate (23) in sequence, so that the ratchet plate (23) rotates in a first direction to achieve shifting.

3. The bicycle speed change device according to claim 2, characterized in that: The bevel gear set (7) comprises a first bevel gear (71) rotatably connected to the connecting shaft (21) and a second bevel gear (72) rotatably connected to the housing (1); the second bevel gear (72) has a linkage arm (721) extending outwards; the linkage arm (721) is arranged on the swing path of the shift lever (5).

4. The bicycle speed change device according to claim 3, characterized in that: The first bevel gear (71) is circular, and the second bevel gear (72) is sector-shaped.

5. The bicycle speed change device according to claim 1, characterized in that: The gear-reversing lever (6) is rotatably arranged on the housing (1), and a protruding portion (61) is arranged at the bottom thereof. When the gear-reversing lever (6) is rotated, the protruding portion (61) contacts and pushes the gear-reversing paddle (4), thereby driving the gear-reversing pawl (25) linked to the gear-reversing paddle (4) to slide along the ratchet teeth (231) on the ratchet plate (23) in sequence, so that the ratchet plate (23) rotates in a second direction opposite to the first direction to realize gear reversal.

6. The bicycle speed change device according to claim 1 or 2, characterized in that: A brake handle (8) is arranged on the housing (1), and the gear lever (5) is rotatably arranged on the brake handle (8). The rotation direction of the brake handle (8) is different from the swing direction of the gear lever (5).

7. The bicycle speed change device according to claim 6, characterized in that: The housing (1) is provided with a wiring hole (12); the brake handle (8) is located on a side of the housing (1) opposite to the wiring hole (12); one end of the brake line is connected to the brake handle (8), and the other end passes through the wiring hole (12).

8. The bicycle speed change device according to claim 1, characterized in that: The gear-entry pawl (24) is arranged on the gear-entry paddle (3).

9. The bicycle speed change device according to claim 1 or 8, characterized in that: The gear-reversing pawl (25) is arranged on the base (2), and the base (2) is fixed in the housing (1).

10. The bicycle speed change device according to claim 1, characterized in that: The base (2) is provided with a torsion spring (26), one end of the torsion spring (26) is connected to the gear-reversing paddle (4), and the other end of the torsion spring (26) is connected to the gear-forward paddle (3).

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