Rear axle braking structure and tricycle

Abstract

The utility model relates to the technical field of tricycles, in particular to a rear axle braking structure and a tricycle, which are used for the tricycle and comprise a rocker arm, a shell, a telescopic mechanism and an adjusting mechanism. One end of the rocker arm is connected with a hand brake stay wire of the tricycle, the other end of the rocker arm is connected with the telescopic mechanism, and the rocker arm can rotate in the radial direction of the telescopic mechanism; the shell is arranged between the rocker arm and a shoe block of the tricycle, a hydraulic cavity is formed in the shell, the telescopic mechanism is arranged at the end, facing the rocker arm, of the hydraulic cavity, and the adjusting mechanism is arranged at the end, facing the shoe block, of the hydraulic cavity and connected with the shoe block. The telescopic mechanism can be close to or away from the adjusting mechanism along with rotation of the rocker arm so as to drive the adjusting mechanism to open or tension the shoe block. According to the rear axle braking structure and the tricycle using the rear axle braking structure, the braking hand feeling of a hand brake can be improved, the distance between the rear axle braking structure and the ground can be increased due to the lever ratio adjustment of the rear axle braking structure, and the passing performance of the tricycle can be enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tricycle technical field, concretely relates to a rear axle brake structure and tricycle. BACKGROUND

[0002] With the development of economy, the progress of society, green travel is paid more and more attention by the public, and tricycle is widely applied to green travel because of small size, convenient use and other advantages.

[0003] The existing tricycle rear axle brake is a pure mechanical structure, and only through the cable structure directly drives the cam to brake, which can cause the user's hand operation force to be wasted, cause poor hand feeling, and also can cause poor brake effect. UTILITY MODEL CONTENTS

[0004] (I) the utility model provides a rear axle brake structure and tricycle, alleviate the technical problem of poor hand feeling and poor brake effect of tricycle rear axle brake in prior art.

[0005] (II) technical scheme

[0006] In order to solve the above technical problem, the embodiment of the utility model provides a rear axle brake structure for tricycle, including rocker, shell, telescopic mechanism and adjusting mechanism;

[0007] One end of the rocker is connected with the hand brake cable of the tricycle, the other end of the rocker is connected with the telescopic mechanism, and the rocker can rotate along the radial direction of the telescopic mechanism;

[0008] The shell is arranged between the rocker and the shoe block of the tricycle, the shell is internally provided with a hydraulic cavity, the telescopic mechanism is arranged at one end of the hydraulic cavity towards the rocker, and the adjusting mechanism is arranged at one end of the hydraulic cavity towards the shoe block and connected with the shoe block;

[0009] The telescopic mechanism can rotate to approach or move away from the adjusting mechanism along with the rocker, so as to drive the adjusting mechanism to open or tighten the shoe block.

[0010] Further, the telescopic mechanism includes an upper pressing block, a sliding assembly and a lower plunger, one side of the upper pressing block towards the outside of the hydraulic cavity is connected with the end of the rocker, the other side of the upper pressing block towards the inside of the hydraulic cavity is provided with the lower plunger, the sliding assembly is arranged between the upper pressing block and the lower plunger, and the sliding assembly can rotate to press or lift the lower plunger along with the upper pressing block, so as to drive the adjusting mechanism to open or tighten the shoe block.

[0011] Further, the sliding assembly comprises a steel column and a slide channel, the slide channel is arranged on the upper surface of the lower plunger, the bottom wall of the slide channel is inclined, one end of the steel column is arranged in the slide channel, the other end is connected with the outer bottom wall of the upper pressing block, and the steel column can slide along the extension direction of the slide channel.

[0012] Further, the outer bottom wall of the upper pressing block is provided with a positioning hole, and the end of the steel column away from the slide channel is fixedly arranged in the positioning hole.

[0013] Further, the steel column is provided with at least two, and the number of the slide channel and the positioning hole corresponds to the steel column one by one.

[0014] Further, the telescopic mechanism further comprises a buffer spring and an adjusting plug, one end of the buffer spring is connected with the bottom wall of the lower plunger, and the other end is connected with the adjusting plug.

[0015] Further, the adjusting mechanism comprises an adjusting piston, the adjusting piston is arranged on both sides of the bottom of the hydraulic cavity and is connected with the shoe block respectively, and the adjusting plug can drive the adjusting piston to move.

[0016] Further, the pistons are connected through elastic members.

[0017] Further, the side wall of the shell is further connected with a compensation cavity, and the compensation cavity is communicated with the hydraulic cavity.

[0018] The embodiment of the utility model further provides a tricycle comprising the rear axle brake structure.

[0019] The utility model discloses beneficial effects:

[0020] The utility model provides a rear axle brake structure, including rocker, shell, telescopic mechanism and adjusting mechanism, through the hand brake pull cable of tricycle can drive rocker rotates along the radial direction of telescopic mechanism, can drive telescopic mechanism to be close to or away from adjusting mechanism, because telescopic mechanism and adjusting mechanism are correspondingly arranged at both ends of hydraulic cavity, when telescopic mechanism is close to adjusting mechanism, will build pressure for hydraulic cavity, make adjusting mechanism open shoe block, output brake force, thereby can improve the brake feeling of hand brake, because the shell between rocker and tricycle's shoe block changes the lever ratio of rear axle brake structure, can improve the ground clearance of rear axle brake structure, so as to enhance the passing performance of vehicle.

[0021] The utility model further provides a tricycle, uses the rear axle brake structure, thereby can improve the brake feeling of hand brake, and still because the lever ratio of rear axle brake structure is adjusted, can improve the ground clearance of rear axle brake structure, so as to enhance the passing performance of vehicle. DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0023] Fig. 1 The utility model provides a kind of appearance structure schematic diagram of rear axle brake structure for utility model embodiment;

[0024] Fig. 2 The utility model provides a kind of internal structure schematic diagram of rear axle brake structure for utility model embodiment.

[0025] Icon:

[0026] 100-rocker arm;

[0027] 200-housing;201-upper pressing block;202-lower plunger;203-steel column;204-slideway;205-buffer spring;206-adjusting plug;207-adjusting piston;

[0028] 300-shoe;

[0029] 400-compensation cavity. DETAILED DESCRIPTION

[0030] The technical solutions of the present application will be described below in conjunction with embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0031] In the description of the present application, it should be pointed out that the orientation or position relationship indicated by the terms "upper", "lower" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the term "installation", "communication", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be direct communication, also can be indirectly communicated through intermediate medium, can be two elements inside communication.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.In addition, in the description of the utility model, unless otherwise stated, the meaning of "multiple" is two or more than two.

[0033] As Figs. 1-2 The utility model provides a rear axle brake structure for tricycle, including rocker arm 100, casing 200, telescopic mechanism and adjusting mechanism, one end of rocker arm 100 is connected with the hand brake pull cable of tricycle, the other end of rocker arm 100 is connected with telescopic mechanism, and rocker arm 100 can rotate along the radial direction of telescopic mechanism, casing 200 is located between rocker arm 100 and the shoe block 300 of tricycle, and the inside of casing 200 is equipped with hydraulic chamber, and telescopic mechanism is located at one end of hydraulic chamber towards rocker arm 100, and adjusting mechanism is located at one end of hydraulic chamber towards shoe block 300 and is connected with shoe block 300, and telescopic mechanism can rotate close to or away from adjusting mechanism along with rocker arm 100 to drive adjusting mechanism to open or tighten shoe block 300.

[0034] In the embodiment, the rear axle brake structure includes rocker arm 100, casing 200, telescopic mechanism and adjusting mechanism, and the hand brake pull cable of tricycle can drive rocker arm 100 to rotate along the radial direction of telescopic mechanism, and then can drive telescopic mechanism to approach or away from adjusting mechanism, since telescopic mechanism and adjusting mechanism are respectively arranged at both ends of hydraulic chamber, when telescopic mechanism approaches adjusting mechanism, builds pressure for hydraulic chamber, makes adjusting mechanism open shoe block 300, and outputs brake force, so as to improve the brake feeling of hand brake, since the casing 200 arranged between rocker arm 100 and shoe block 300 of tricycle changes the lever ratio of rear axle brake structure, can improve the ground clearance of rear axle brake structure, so as to enhance the passing performance of vehicle.

[0035] Of course, the rear axle brake structure provided in the embodiment can also completely remove rocker arm 100, casing 200 and telescopic mechanism, and directly connect with adjusting mechanism by using oil pipe joint, which can be used as pure hydraulic drum brake.

[0036] According to one embodiment of the utility model, as Fig. 2As shown, the telescopic mechanism comprises an upper pressing block 201, a sliding assembly and a lower plunger 202, one side of the upper pressing block 201 is connected with the end of the rocker arm 100, the other side of the upper pressing block 201 is provided with the lower plunger 202, the sliding assembly is arranged between the upper pressing block 201 and the lower plunger 202, the sliding assembly can press down or lift the lower plunger 202 by rotating the upper pressing block 201, so as to drive the adjusting mechanism to open or tighten the shoe block 300.

[0037] In the embodiment, one side of the upper pressing block 201 is connected with the end of the rocker arm 100 and is fixed to the end of the hydraulic cavity, the other side of the upper pressing block 201 is provided with the lower plunger 202, the sliding assembly is arranged between the upper pressing block 201 and the lower plunger 202, the sliding assembly can press down or lift the lower plunger 202 by rotating the upper pressing block 201, so as to drive the adjusting mechanism to adjust the shoe block 300, so that the shoe block 300 outputs the braking force or releases the braking force.

[0038] In addition, a guide sliding groove is arranged on the side wall of the shell 200, the side wall of the lower plunger 202 is fixedly provided with a sliding block matched with the sliding groove, when the upper pressing block 201 drives the rotation to drive the sliding assembly to press down or lift the lower plunger 202, the sliding cooperation of the guide sliding groove and the sliding block can make the lower plunger 202 only move up and down, and cannot rotate synchronously with the upper pressing block 201, so as to ensure the stability of building pressure in the hydraulic cavity.

[0039] According to one embodiment of the utility model, as shown in the figure, Fig. 2 The sliding assembly comprises a steel column 203 and a slide 204, the slide 204 is arranged on the upper surface of the lower plunger 202, the bottom wall of the slide 204 is inclined, one end of the steel column 203 is arranged in the slide 204, the other end is connected with the outer bottom wall of the upper pressing block 201 and can slide along the extension direction of the slide 204.

[0040] In the embodiment, the sliding assembly comprises a steel column 203 and a slide 204, preferably, the slide 204 is arranged on the upper surface of the lower plunger 202, the bottom wall of the slide 204 is inclined, one end of the steel column 203 is directly arranged in the slide 204 and the other end is connected with the outer bottom wall of the upper pressing block 201, when the upper pressing block 201 rotates, the steel column 203 slides synchronously in the slide 204, since the bottom wall of the slide 204 is inclined, the length of the steel column 203 protruding from the slide 204 changes with the movement of the steel column 203, since the upper pressing block 201 is fixed, the lower plunger 202 can be pressed down or lifted, so as to build pressure or release pressure in the hydraulic cavity, so that the adjusting mechanism can adjust the shoe block 300 to output the braking force.

[0041] According to one embodiment of the utility model, as shown in the figure, Fig. 2As shown, the outer bottom wall of the upper pressing block 201 is provided with a positioning hole, and one end of the steel column 203 away from the sliding channel 204 is fixedly arranged in the positioning hole.

[0042] In the embodiment, the outer wall of the upper pressing block 201 is provided with a positioning block matched with the shape and size of the steel column 203, and one end of the steel column 203 away from the sliding channel 204 is fixedly arranged in the positioning hole, so that the steel column 203 can slide along the extension direction of the sliding channel 204 with the rotation of the upper pressing block 201, so as to achieve the effect of pressing down or lifting the lower plunger 202.

[0043] According to one embodiment of the utility model, as shown in the figure, Fig. 2 As shown, the steel column 203 is provided with at least two, and the number of the sliding channel 204 and the positioning hole corresponds to the steel column 203 one by one.

[0044] In the embodiment, the steel ball is provided with at least two, preferably three, which are distributed in an equilateral triangle, can have good stability, and the sliding channel 204 is correspondingly provided with three along the circumferential direction of the upper surface of the lower plunger 202, the bottom wall of the three sliding channels 204 is inclined, and three positioning holes are also arranged on the outer bottom wall of the upper pressing block 201, which cooperate with the steel column 203 and the sliding channel 204 for adjustment.

[0045] According to one embodiment of the utility model, as shown in the figure, Fig. 2 As shown, the telescopic mechanism further comprises a buffer spring 205 and an adjusting plug 206, one end of the buffer spring 205 is connected with the bottom wall of the lower plunger 202, and the other end is connected with the adjusting plug 206.

[0046] In the embodiment, the telescopic mechanism further comprises a buffer spring 205 and an adjusting plug 206, the adjusting plug 206 is directly connected with the adjusting mechanism, and the buffer spring 205 is arranged between the adjusting plug 206 and the lower plunger 202, which can increase a certain buffer force, prevent the hydraulic cavity from building pressure too fast, affect the braking efficiency, and improve the hand feeling in the braking use process.

[0047] According to one embodiment of the utility model, as shown in the figure, Fig. 1 As shown, the adjusting mechanism comprises an adjusting piston 207, the adjusting piston 207 is arranged on both sides of the bottom of the hydraulic cavity and is connected with the shoe block 300 respectively, and the adjusting plug 206 can drive the adjusting piston 207 to move.

[0048] In the embodiment, the adjusting mechanism comprises an adjusting piston 207, the adjusting piston 207 is symmetrically arranged on both sides of the bottom of the hydraulic cavity, and each adjusting piston 207 is connected with the shoe block 300 correspondingly, when the hydraulic cavity builds pressure, the adjusting piston 207 moves apart to both sides, the shoe block 300 is forced to move outward to open the shoe block 300, and the output braking force.

[0049] According to one embodiment provided by the utility model, as shown in Fig. 1 The elastic members are connected between the pistons.

[0050] In the embodiment, the two pistons on the two sides of the bottom of the hydraulic cavity are connected by elastic members, when the lower plunger 202 drives the adjusting plug 206 to move upwards, the hydraulic cavity is depressurized, and the two pistons are reset by the elastic members to release the brake force of the two side shoes 300.

[0051] Optionally, the elastic member is a spring.

[0052] According to one embodiment provided by the utility model, as shown in Fig. 1 Fig. 1 The shell 200 side wall is further connected with a compensation cavity 400, and the compensation cavity 400 is communicated with the hydraulic cavity.

[0053] In the embodiment, preferably, the shell 200 side wall is further connected with a compensation cavity 400, and the compensation cavity 400 is communicated with the hydraulic cavity, so that the hydraulic cavity can be compensated for use, so as to increase the service life of the rear axle brake structure provided by the embodiment, and also can be exhausted to prevent the hydraulic cavity from expanding and causing harm.

[0054] Optionally, an adjusting screw can be additionally arranged on the side wall of the compensation cavity 400, the adjusting screw is used for adjusting the compensation working fluid amount of the hydraulic cavity, so as to adjust the brake feeling of the hand brake, and the use experience of the user can be further improved.

[0055] The utility model also provides a tricycle which comprises the rear axle brake structure.

[0056] In the embodiment, the tricycle uses the rear axle brake structure, so that the brake feeling of the hand brake can be improved, and the ground clearance of the rear axle brake structure can be increased due to the lever ratio adjustment of the rear axle brake structure, so as to enhance the passing performance of the vehicle.

[0057] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A rear axle brake structure for a tricycle, characterized by comprising: The rocker arm (100), the shell (200), the telescopic mechanism and the adjusting mechanism are included. One end of the rocker arm (100) is connected with the hand brake cable of the tricycle, and the other end of the rocker arm (100) is connected with the telescopic mechanism, and the rocker arm (100) can rotate along the radial direction of the telescopic mechanism. The shell (200) is arranged between the rocker arm (100) and the brake block (300) of the tricycle, and a hydraulic cavity is arranged in the shell (200), the telescopic mechanism is arranged at one end of the hydraulic cavity towards the rocker arm (100), and the adjusting mechanism is arranged at the other end of the hydraulic cavity towards the brake block (300) and connected with the brake block (300). The telescopic mechanism can move close to or away from the adjusting mechanism along with the rotation of the rocker arm (100), so as to drive the adjusting mechanism to open or tighten the brake block (300).

2. The rear axle brake structure according to claim 1, characterized by The telescopic mechanism includes an upper pressing block (201), a sliding assembly and a lower plunger (202), one side of the upper pressing block (201) towards the outside of the hydraulic cavity is connected with the end of the rocker arm (100), the other side of the upper pressing block (201) towards the inside of the hydraulic cavity is provided with the lower plunger (202), the sliding assembly is arranged between the upper pressing block (201) and the lower plunger (202), and the sliding assembly can press down or lift the lower plunger (202) along with the rotation of the upper pressing block (201), so as to drive the adjusting mechanism to open or tighten the brake block (300).

3. The rear axle brake structure according to claim 2, characterized by The sliding assembly includes a steel column (203) and a slide (204), the slide (204) is arranged on the upper surface of the lower plunger (202), the bottom wall of the slide (204) is inclined, one end of the steel column (203) is arranged in the slide (204), and the other end is connected with the outer bottom wall of the upper pressing block (201) and can slide along the extension direction of the slide (204).

4. The rear axle brake structure according to claim 3, characterized by The outer bottom wall of the upper pressing block (201) is provided with a positioning hole, and one end of the steel column (203) away from the slide (204) is fixedly arranged in the positioning hole.

5. The rear axle brake structure according to claim 4, characterized by The steel column (203) is provided with at least two, and the number of the slide (204) and the positioning hole corresponds to the number of the steel column (203).

6. The rear axle brake structure according to claim 2, characterized by The telescopic mechanism further includes a buffer spring (205) and an adjusting plug (206), one end of the buffer spring (205) is connected with the bottom wall of the lower plunger (202), and the other end is connected with the adjusting plug (206).

7. The rear axle brake structure according to claim 6, characterized by The adjusting mechanism includes an adjusting piston (207), the adjusting piston (207) is arranged on both sides of the bottom of the hydraulic cavity and connected with the brake block (300) respectively, and the adjusting plug (206) can drive the adjusting piston (207) to move.

8. The rear axle brake structure according to claim 7, characterized by The pistons are connected by elastic members.

9. The rear axle brake structure according to claim 8, characterized in that, The side wall of the shell (200) is further connected with a compensation cavity (400), and the compensation cavity (400) is communicated with the hydraulic cavity.

10. A tricycle characterized in that, The rear axle brake structure of any one of claims 1-9 is included.

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