Twelve-speed split finger shifting brake of bicycle

Abstract

The twelve-speed split finger poking brake device comprises a center shaft and a speed change ratchet wheel, the middle of the speed change ratchet wheel is arranged on the annular wall of the center shaft in a sleeved mode, a sleeving component is arranged on the outer wall of the center shaft in a sleeved mode, the sleeving component is located at the top of the speed change ratchet wheel, and the sleeving component comprises a fixing sleeve piece and a connecting piece, the fixing sleeve sleeves the outer wall of the central shaft and is positioned at the top of the variable-speed ratchet wheel; the speed change external member is arranged on the outer wall of the central shaft in a sleeving manner and is positioned at the top of the fixed external member; the shifting end of the returning shifting rod is arranged on the outer wall of the center shaft in a sleeving mode and located on the top of the speed change suite. According to the utility model, a plurality of mutually meshed suites are sleeved in the shell, the internal suites brake and influence each other, twelve gears are designed on the number of teeth of the speed change ratchet wheel, the gears are freely adjusted by using the deflector rod, and the designed shape of the speed change suites can enable the speed change suites to rotate towards an ideal position when the speed change suites are poked forwards or backwards.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle speed change, in particular to a twelve-speed split finger brake device for a bicycle. Background Art

[0002] Bicycles are a convenient means of transportation that are easy to travel and affordable, and are popular among the general public. As one of the complex accessories on bicycles, finger-pick brakes can freely adjust the speed of the bicycle and help riders ride easily in various areas. The finger-pick brakes on bicycles on the market support one-way paddles for shifting gears, and the internal parts are simply connected. There will be problems of jamming and delay when shifting the paddles. When riding, it is inconvenient for riders to adapt to the one-way paddles. When the paddles are shifted in the opposite direction, it is easy to cause damage to the inside of the finger-pick brake. Therefore, a twelve-speed split finger-pick brake for bicycles is provided. Utility Model Content

[0003] The purpose of the utility model is to provide a finger-operated brake device to solve the problems raised in the above background technology.

[0004] To achieve the above object, the utility model provides the following technical solution: a finger brake, comprising a central shaft and a speed-changing ratchet, wherein the middle portion of the speed-changing ratchet is sleeved on the annular wall of the central shaft, the outer wall of the central shaft is sleeved with a sleeve component, and the sleeve component is located at the top of the speed-changing ratchet, and the sleeve component comprises:

[0005] A fixing kit, which is sleeved on the outer wall of the central shaft and located on the top of the speed-changing ratchet;

[0006] A speed change kit, which is sleeved on the outer wall of the central shaft and located on the top of the fixed kit;

[0007] A homing lever, wherein the homing lever has an actuating end sleeved on the outer wall of the central shaft and located on the top of the speed change kit.

[0008] Preferably, a speed change shaft is sleeved on one side of the middle part of the fixing kit, a speed change lever is sleeved on the outer wall of the speed change shaft, a ratchet paddle is arranged on one side of the outer ring wall of the speed change ratchet, and the ratchet paddle is used to drive the speed change ratchet to rotate clockwise.

[0009] Preferably, the outer teeth of the ratchet paddle are meshed with the outer teeth of the speed change ratchet, and the shifting end of the speed change lever is meshed with the outer teeth of the speed change kit.

[0010] Preferably, a protrusion is provided at the bottom of the speed change kit and at one end close to the ratchet paddle, and the speed change kit is braked mutually with the outer teeth of the ratchet paddle via the protrusion.

[0011] Preferably, a homing paddle is provided at the bottom of the homing lever and on the other side of the ratchet paddle, and one end of the homing paddle away from the homing lever is engaged with the outer wall of the speed-changing ratchet to limit its rebound.

[0012] Preferably, a shell is arranged outside the central shaft, the speed-changing ratchet and the sleeve component.

[0013] Preferably, a display pointer is provided on the outer wall of the bottom of the shell.

[0014] Preferably, a wire take-up device is installed on one side of the housing.

[0015] Technical effects and advantages of the utility model:

[0016] The utility model utilizes a plurality of mutually meshing kits to be sleeved in a shell, and the internal kits brake and influence each other, so that the gear switching will be smoother. The number of teeth of the speed change ratchet is designed with twelve gears, and the gear can be freely adjusted by using a lever. When the speed change lever is moved, the designed speed change kit can be moved back and forth so that the outer teeth of the speed change lever and the outer teeth of the speed change kit brake each other, which can make the speed change kit rotate, and then drive the ratchet paddle to move the speed change ratchet for speed change rotation, and a fixing kit is installed between the speed change ratchet and the speed change kit, which not only stabilizes the overall structure, but also supports the constraint of the return paddle on the speed change ratchet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the internal structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the structural connection of the internal ratchet part of the utility model.

[0019] Figure 3 It is a schematic diagram of the structural connection between the internal lever structure and the ratchet part of the utility model.

[0020] Figure 4 It is a side view of the internal structure of the utility model.

[0021] Figure 5 It is a schematic diagram of the overall structure of the utility model.

[0022] Figure 6 It is a schematic diagram of the connection between the sleeve component and the speed-changing ratchet structure of the utility model.

[0023] In the figure: 1, central axis; 2, speed change ratchet; 201, ratchet paddle; 202, return paddle; 3, sleeve component; 301, fixing kit; 302, speed change kit; 303, return lever; 310, speed change shaft; 311, speed change lever; 4, housing; 5, display pointer; 6, wire take-up device. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model provides Figure 1-6 The finger brake device shown in the figure comprises a central shaft 1 and a speed-changing ratchet 2. The middle part of the speed-changing ratchet 2 is sleeved on the annular wall of the central shaft 1. The outer wall of the central shaft 1 is sleeved with a sleeve component 3. The sleeve component 3 is located at the top of the speed-changing ratchet 2. The sleeve component 3 comprises:

[0026] A fixing kit 301, which is sleeved on the outer wall of the central shaft 1 and located on the top of the speed-changing ratchet 2;

[0027] The speed change kit 302 is sleeved on the outer wall of the central shaft 1 and located on the top of the fixing kit 301;

[0028] The homing lever 303 has a driving end sleeved on the outer wall of the central shaft 1 and located on the top of the speed change kit 302 .

[0029] It should be noted that the designed speed ratchet 2 adopts high-quality metal gears and has twelve tooth roots, which can accurately switch gears. The kits influence each other. A spring is arranged inside the speed ratchet 2 to help the speed ratchet 2 rotate. The bottom of the speed ratchet 2 is fixedly connected to a take-up disk. The take-up disk is used to adjust the height of the bicycle chain. The transmission ratio is changed by changing the speed gear engaged by the chain to achieve the speed change effect.

[0030] Specifically, a speed shift shaft 310 is sleeved on one side of the middle of the fixing kit 301, a speed shift lever 311 is sleeved on the outer wall of the speed shift shaft 310, a ratchet paddle 201 is provided on one side of the outer ring wall of the speed shift ratchet 2, the ratchet paddle 201 is used to drive the speed shift ratchet 2 to rotate clockwise, the outer teeth of the ratchet paddle 201 are meshed with the outer teeth of the speed shift ratchet 2, and the driving end of the speed shift lever 311 is meshed with the outer teeth of the speed shift kit 302.

[0031] It should be noted that the fixing kit 301 is made of high-quality metal sheet. On the one hand, the fixing kit 301 is used to distinguish the speed change ratchet 2 and the speed change kit 302 so that their relative rotation is not affected by each other. It also fixes the position between the two kits so that it can operate more stably when the brake is running. The edge of the fixing kit 301 is connected with the wire-taking device 6 by means of a threaded sleeve, which fixes the wire end and the wire-taking reel to maintain the same level, making wire taking-up safer and more convenient. The edge of the other side of the fixing kit 301 is stuck in the bayonet of the speed change ratchet 2 and the return paddle 202, and the return paddle 202 is stuck so that it will not rotate together due to the stress of the spring of the speed change ratchet 2, and cannot play the role of a buckle.

[0032] Specifically, a protrusion is provided at the bottom of the shift kit 302 and at one end close to the ratchet paddle 201, and the shift kit 302 brakes against the outer teeth of the ratchet paddle 201 through the protrusion. A return paddle 202 is provided at the bottom of the return lever 303 and at the other side of the ratchet paddle 201, and the end of the return paddle 202 away from the return lever 303 is engaged with the outer wall of the shift ratchet 2 to limit its rebound.

[0033] It should be noted that the designed return lever 303 and the shift lever 311 are made of ABS plastic material, and a striped structure is provided at the position where the hand is required to move, so as to increase the surface roughness when moving to achieve the purpose of anti-slip. The shape of the lever uses ergonomics, which can be accurately gripped and moved, and the feel will be more fitting and comfortable. Since the shift lever 311 can be moved back and forth, it can be quickly used even if it is the first time.

[0034] Specifically, a housing 4 is disposed outside the central shaft 1, the speed change ratchet 2 and the sleeve member 3, and a display pointer 5 is disposed on the outer wall of the bottom of the housing 4. ， A wire take-up device 6 is installed on one side of the housing 4 .

[0035] It should be noted that the shell 4 is designed to be made of lightweight materials, which makes riding and installation more labor-saving and realizes lightweight riding. The display pointer 5 is designed. When the lever adjusts the gear, the bottom speed change ratchet 2 drives the display pointer 5 to achieve offset. The display pointer 5 corresponds to the numerical value to display the current gear, which helps the rider to better distinguish the current speed.

[0036] Working principle of this utility model:

[0037] The gears are switched by the shift lever 311 and the return lever 303. When the shift lever 311 is turned, the outer teeth of the shift lever 311 mesh with the outer teeth of the shift kit 302. The rotation of the shift lever 311 drives the shift kit 302 to rotate. The rotation of the shift kit 302 drives the ratchet paddle 201. The ratchet paddle 201 shifts the speed ratchet 2. When the speed ratchet 2 rotates through a tooth opening, it is buckled by the return paddle 202 and the fixing kit 301. The speed ratchet 2 is wound up to adjust the height of the bicycle chain, thereby achieving the effect of acceleration. The return lever 303 is turned. The return lever 303 shifts the angle of the return paddle 202 through the round action. When the return paddle 202 leaves the speed ratchet 2, the speed ratchet 2 rebounds to its original position under the action of the spring, and the acceleration returns to its original position.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A 12-speed split finger brake for a bicycle, comprising a central shaft (1) and a speed-changing ratchet (2), characterized in that: The middle part of the speed-changing ratchet (2) is sleeved on the annular wall of the central shaft (1), the outer wall of the central shaft (1) is sleeved with a sleeve component (3), and the sleeve component (3) is located on the top of the speed-changing ratchet (2), and the sleeve component (3) comprises: A fixing kit (301), wherein the fixing kit (301) is sleeved on the outer wall of the central shaft (1) and is located on the top of the speed-changing ratchet (2); A speed change kit (302), wherein the speed change kit (302) is sleeved on the outer wall of the central shaft (1) and is located on the top of the fixed kit (301); A return lever (303), wherein the driving end of the return lever (303) is sleeved on the outer wall of the central shaft (1) and is located at the top of the speed change kit (302).

2. A 12-speed split finger brake for bicycle according to claim 1, characterized in that: A speed change shaft (310) is sleeved on one side of the middle of the fixing kit (301), a speed change lever (311) is sleeved on the outer wall of the speed change shaft (310), a ratchet paddle (201) is provided on one side of the outer ring wall of the speed change ratchet (2), and the ratchet paddle (201) is used to drive the speed change ratchet (2) to rotate clockwise.

3. A 12-speed split finger brake for bicycle according to claim 2, characterized in that: The outer teeth of the ratchet paddle (201) are meshed with the outer teeth of the speed-changing ratchet (2), and the shifting end of the speed-changing lever (311) is meshed with the outer teeth of the speed-changing kit (302).

4. A 12-speed split finger brake for bicycle according to claim 3, characterized in that: A protruding point is provided at the bottom of the speed change kit (302) and at one end close to the ratchet paddle (201), and the speed change kit (302) is braked mutually with the outer teeth of the ratchet paddle (201) via the protruding point.

5. A 12-speed split finger brake for bicycle according to claim 1, characterized in that: A homing paddle (202) is provided at the bottom of the homing lever (303) and on the other side of the ratchet paddle (201), and one end of the homing paddle (202) away from the homing lever (303) is engaged with the outer wall of the speed-changing ratchet (2) to limit its rebound.

6. A 12-speed split finger brake for bicycle according to claim 1, characterized in that: A housing (4) is arranged outside the central shaft (1), the speed-changing ratchet (2) and the sleeve component (3).

7. A 12-speed split finger brake for bicycle according to claim 6, characterized in that: A display pointer (5) is provided on the outer wall of the bottom of the housing (4).

8. A 12-speed split finger brake for bicycle according to claim 6, characterized in that: A wire taking-up device (6) is installed on one side of the housing (4).

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