Rear axle braking structure and tricycle

Abstract

The invention relates to the technical field of tricycles, in particular to a rear axle braking structure and a tricycle, and the rear axle braking structure comprises 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, and due to the lever ratio adjustment of the rear axle braking structure, the ground clearance of the rear axle braking structure can be increased, so that the passing performance of the tricycle is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of tricycles, and in particular to a rear axle brake structure and a tricycle. Background Art

[0002] With the development of economy and the progress of society, green travel has received more and more attention from the public. Tricycles are widely used in green travel by the public due to their small size and convenient use.

[0003] The existing rear axle brake of a tricycle is a purely mechanical structure, which only directly drives the cam to brake through a cable structure, which will cause a large waste of the user's manual operation force, resulting in a poor hand feel and poor braking effect. Summary of the invention

[0004] (I) The present invention provides a rear axle brake structure and a tricycle, which alleviate the technical problems of poor braking feel and poor braking effect of the rear axle of the tricycle in the prior art.

[0005] (II) Technical solution

[0006] In order to solve the above technical problems, an embodiment of the present invention provides a rear axle brake structure for a tricycle, comprising a rocker arm, a housing, a telescopic mechanism and an adjustment mechanism;

[0007] One end of the rocker arm is connected to the handbrake cable of the tricycle, and the other end of the rocker arm is connected to the telescopic mechanism, and the rocker arm can rotate along the radial direction of the telescopic mechanism;

[0008] The housing is disposed between the rocker arm and the shoe of the tricycle, a hydraulic chamber is disposed inside the housing, the telescopic mechanism is disposed at one end of the hydraulic chamber facing the rocker arm, and the adjusting mechanism is disposed at one end of the hydraulic chamber facing the shoe and connected to the shoe;

[0009] The telescopic mechanism can move closer to or farther away from the adjusting mechanism as the rocker arm rotates, so as to drive the adjusting mechanism to open or tighten the shoe.

[0010] Furthermore, the telescopic mechanism includes an upper pressure block, a sliding assembly and a lower plunger. The side of the upper pressure block facing the outside of the hydraulic chamber is connected to the end of the rocker arm, and the side of the upper pressure block facing the inside of the hydraulic chamber is provided with the lower plunger. The sliding assembly is arranged between the upper pressure block and the lower plunger. The sliding assembly can press down or lift the lower plunger as the upper pressure block rotates, so as to drive the adjusting mechanism to open or tighten the shoe.

[0011] Furthermore, the sliding assembly includes a steel column and a slide, the slide is arranged on the upper surface of the lower piston, the bottom wall of the slide is an inclined surface, one end of the steel column is arranged on the slide, and the other end is connected to the outer bottom wall of the upper pressure block and can slide along the extension direction of the slide.

[0012] Furthermore, a positioning hole is provided on the outer bottom wall of the upper pressing block, and one end of the steel column away from the slideway is fixedly arranged in the positioning hole.

[0013] Furthermore, at least two steel columns are provided, and the number of the slideways and the positioning holes corresponds one to one with the number of the steel columns.

[0014] Furthermore, the telescopic mechanism also includes a buffer spring and an adjusting plug, one end of the buffer spring is connected to the bottom wall of the lower plunger, and the other end is connected to the adjusting plug.

[0015] Furthermore, the regulating mechanism includes an regulating piston, which is arranged on both sides of the bottom of the hydraulic chamber and is respectively connected to the shoe blocks, and the regulating plug can drive the regulating piston to move.

[0016] Furthermore, the pistons are connected via elastic members.

[0017] Furthermore, the shell side wall is also connected to a compensation chamber, and the compensation chamber is communicated with the hydraulic chamber.

[0018] An embodiment of the present invention further provides a tricycle, comprising the above-mentioned rear axle braking structure.

[0019] Beneficial effects of the present invention:

[0020] A rear axle brake structure provided by the present invention includes a rocker arm, a shell, a telescopic mechanism and an adjusting mechanism. The rocker arm can be driven to rotate along the radial direction of the telescopic mechanism through the handbrake cable of the tricycle, and then the telescopic mechanism can be driven to approach or move away from the adjusting mechanism. Since the telescopic mechanism and the adjusting mechanism are respectively arranged at the two ends of the hydraulic chamber, when the telescopic mechanism approaches the adjusting mechanism, pressure is built up for the hydraulic chamber, so that the adjusting mechanism opens the shoe and outputs the braking force, thereby improving the braking feel of the handbrake. Since the shell arranged between the rocker arm and the shoe of the tricycle changes the lever ratio of the rear axle brake structure, the distance of the rear axle brake structure from the ground can be increased, so as to enhance the vehicle's passing performance.

[0021] The present invention also provides a tricycle, which uses the above-mentioned rear axle brake structure to improve the braking feel of the handbrake, and because of the adjustment of the lever ratio of the rear axle brake structure, the distance of the rear axle brake structure from the ground can be increased, so as to enhance the vehicle's passing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the appearance structure of a rear axle brake structure provided by an embodiment of the invention;

[0024] Figure 2 A schematic diagram of the internal structure of a rear axle brake structure provided in an embodiment of the invention.

[0025] icon:

[0026] 100- rocker arm;

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

[0028] 300-hoof block;

[0029] 400-Compensation cavity. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the inside of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0033] like Figure 1 to Figure 2 As shown, the present invention provides a rear axle braking structure for a tricycle, comprising a rocker arm 100, a shell 200, a telescopic mechanism and an adjusting mechanism; one end of the rocker arm 100 is connected to the handbrake cable of the tricycle, and the other end of the rocker arm 100 is connected to 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 shoe 300 of the tricycle, and a hydraulic chamber is arranged inside the shell 200, the telescopic mechanism is arranged at one end of the hydraulic chamber facing the rocker arm 100, and the adjusting mechanism is arranged at one end of the hydraulic chamber facing the shoe 300, and is connected to the shoe 300; the telescopic mechanism can move closer to or away from the adjusting mechanism as the rocker arm 100 rotates, so as to drive the adjusting mechanism to open or tighten the shoe 300.

[0034] In this embodiment, the rear axle braking structure includes a rocker arm 100, a shell 200, a telescopic mechanism and an adjusting mechanism. The rocker arm 100 can be driven to rotate along the radial direction of the telescopic mechanism through the handbrake cable of the tricycle, thereby driving the telescopic mechanism to approach or move away from the adjusting mechanism. Since the telescopic mechanism and the adjusting mechanism are respectively arranged at the two ends of the hydraulic chamber, when the telescopic mechanism approaches the adjusting mechanism, pressure is built up for the hydraulic chamber, so that the adjusting mechanism opens the shoe 300 and outputs braking force, thereby improving the braking feel of the handbrake. Since the shell 200 arranged between the rocker arm 100 and the shoe 300 of the tricycle changes the lever ratio of the rear axle braking structure, the distance of the rear axle braking structure from the ground can be increased, so as to enhance the vehicle's passing performance.

[0035] Of course, the rear axle brake structure provided in this embodiment can also completely remove the rocker arm 100, the housing 200, and the telescopic mechanism, and directly connect it to the adjustment mechanism through the use of an oil pipe joint, so that it can be used as a pure hydraulic drum brake.

[0036] According to an embodiment provided by the present invention, Figure 2As shown, the telescopic mechanism includes an upper pressure block 201, a sliding assembly and a lower plunger 202. The side of the upper pressure block 201 facing the outside of the hydraulic chamber is connected to the end of the rocker arm 100, and the side of the upper pressure block 201 facing the inside of the hydraulic chamber is provided with a lower plunger 202. The sliding assembly is arranged between the upper pressure block 201 and the lower plunger 202. The sliding assembly can press down or lift the lower plunger 202 as the upper pressure block 201 rotates, so as to drive the adjustment mechanism to open or tighten the shoe 300.

[0037] In this embodiment, the side of the pressure block facing the outside of the hydraulic chamber is connected to the end of the rocker arm 100 and is fixed to the end of the hydraulic chamber. The side of the upper pressure block 201 facing the inside of the hydraulic chamber is provided with a lower plunger 202. A sliding assembly is provided between the upper pressure block 201 and the lower plunger 202. The rotation of the upper pressure block 201 can drive the sliding assembly to press down or lift the lower plunger 202, thereby driving the adjustment mechanism to adjust the shoe 300, so that the shoe 300 outputs braking force or releases the braking force.

[0038] In addition, a guide groove is opened on the side wall of the shell 200, and a sliding block that cooperates with the groove is fixed on the side wall of the lower piston 202. When the upper pressure block 201 drives the sliding assembly to press down or lift the lower piston 202, the sliding cooperation of the guide groove and the sliding block can make the lower piston 202 simply move up and down, and will not rotate synchronously with the upper pressure block 201, thereby ensuring the stability of pressure building in the hydraulic chamber.

[0039] According to an embodiment provided by the present invention, Figure 2 As shown, the sliding assembly includes a steel column 203 and a slide 204. The slide 204 is arranged on the upper surface of the lower piston 202. The bottom wall of the slide 204 is an inclined surface. One end of the steel column 203 is arranged on the slide 204, and the other end is connected to the outer bottom wall of the upper pressure block 201, and can slide along the extension direction of the slide 204.

[0040] In this embodiment, the sliding assembly includes a steel ball and a slide 204, wherein, preferably, the slide 204 is arranged on the upper surface of the lower piston 202, the bottom wall of the slide 204 is an inclined surface, one end of the steel column 203 is directly slidably arranged in the slide 204, and the other end of the steel column 203 is connected to the outer bottom wall of the upper pressure block 201. When the upper pressure block 201 rotates, it will bring the steel column 203 to slide synchronously on the slide 204. Since the bottom wall of the slide 204 is an inclined surface, as the steel column 203 moves, the length of the steel column 203 protruding from the slide 204 will change. Since the upper pressure block 201 is fixed, it will achieve the effect of pressing down or lifting the lower piston 202 to build up pressure or release pressure in the hydraulic chamber, so that the adjustment mechanism can adjust the output braking force of the shoe 300.

[0041] According to an embodiment provided by the present invention, Figure 2As shown, a positioning hole is provided on the outer bottom wall of the upper pressing block 201, and one end of the steel column 203 away from the slideway 204 is fixedly arranged in the positioning hole.

[0042] In this embodiment, the outer wall of the upper pressure block 201 is provided with a positioning block that is adapted to the shape and size of the steel column 203. The end of the steel column 203 that is away from the slide 204 is fixed inside the positioning hole, so that the steel column 203 can slide along the extension direction of the slide 204 as the upper pressure block 201 rotates, so as to achieve the effect of pressing down or lifting the lower piston 202.

[0043] According to an embodiment provided by the present invention, Figure 2 As shown, at least two steel columns 203 are provided, and the number of slideways 204 and positioning holes corresponds to the number of steel columns 203 .

[0044] In this embodiment, at least two steel balls are provided, wherein preferably, three steel balls are provided, which are distributed in an equilateral triangle, and can have good stability, and three slideways 204 are correspondingly provided along the circumference of the upper surface of the lower piston 202, and the bottom walls of the three slideways 204 are all inclined. At the same time, three positioning holes are also provided on the outer bottom wall of the upper pressure block 201, which are adjusted in conjunction with the steel column 203 and the slideway 204.

[0045] According to an embodiment provided by the present invention, Figure 2 As shown, the telescopic mechanism further includes a buffer spring 205 and an adjusting plug 206 , one end of the buffer spring 205 is connected to the bottom wall of the lower plunger 202 , and the other end is connected to the adjusting plug 206 .

[0046] In this embodiment, the telescopic mechanism also includes a buffer spring 205 and an adjusting plug 206. The adjusting plug 206 is directly connected to the adjusting mechanism, and a buffer spring 205 is arranged between the adjusting plug 206 and the lower piston 202, which can increase a certain buffer force to prevent the hydraulic chamber from building up pressure too quickly, affecting the braking efficiency, and improving the feel of the braking process.

[0047] According to an embodiment provided by the present invention, Figure 1 As shown, the regulating mechanism includes a regulating piston 207 , which is disposed on both sides of the bottom of the hydraulic chamber and is respectively connected to the shoe block 300 , and the regulating plug 206 can drive the regulating piston 207 to move.

[0048] In this embodiment, the adjusting mechanism includes an adjusting piston 207, which is symmetrically arranged on both sides of the bottom of the hydraulic chamber. Each adjusting piston 207 is connected to a corresponding shoe 300. When the hydraulic chamber is pressurized, the adjusting piston 207 will move apart to both sides. After the pressure point of the shoe 300 is subjected to force, the shoe 300 will be driven to open outward to output braking force.

[0049] According to an embodiment provided by the present invention, Figure 1 As shown, the pistons are connected via elastic members.

[0050] In this embodiment, the pistons on both sides of the bottom of the hydraulic chamber are connected by elastic parts. When the lower plunger 202 drives the regulating plug 206 to move upward, the pressure in the hydraulic chamber is reduced, and the two pistons are reset through the elastic parts to loosen the shoes 300 on both sides and release the braking force.

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

[0052] According to an embodiment provided by the present invention, Figure 1 As shown, the side wall of the housing 200 is also connected with a compensation chamber 400, and the compensation chamber 400 is communicated with the hydraulic chamber.

[0053] In this embodiment, preferably, a compensation chamber 400 is also connected to the side wall of the shell 200, and the compensation chamber 400 is interconnected with the hydraulic chamber, so that the hydraulic chamber can be used for compensation, so as to increase the service life of the rear axle brake structure provided by this embodiment, and at the same time, exhaust can be performed to prevent the hydraulic chamber from expanding and causing harm.

[0054] Optionally, an adjusting screw may be further provided on the side wall of the compensation chamber 400 , and the amount of compensating working fluid in the hydraulic chamber may be adjusted by the adjusting screw, thereby adjusting the braking feel of the handbrake, which can further enhance the user experience.

[0055] The present invention also provides a tricycle, comprising the above-mentioned rear axle braking structure.

[0056] In this embodiment, the three-wheeled vehicle uses the above-mentioned rear axle brake structure, which can improve the braking feel of the handbrake, and also because of the adjustment of the lever ratio of the rear axle brake structure, the distance of the rear axle brake structure from the ground can be increased, so as to enhance the vehicle's passing performance.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. 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 rear axle brake structure for a tricycle, characterized in that: It comprises a rocker arm (100), a housing (200), a telescopic mechanism and an adjusting mechanism; One end of the rocker arm (100) is connected to the handbrake cable of the tricycle, and the other end of the rocker arm (100) is connected to the telescopic mechanism, and the rocker arm (100) can rotate along the radial direction of the telescopic mechanism; The housing (200) is arranged between the rocker arm (100) and the shoe (300) of the tricycle, a hydraulic chamber is arranged inside the housing (200), the telescopic mechanism is arranged at one end of the hydraulic chamber facing the rocker arm (100), and the adjusting mechanism is arranged at one end of the hydraulic chamber facing the shoe (300) and is connected to the shoe (300); The telescopic mechanism can move closer to or farther away from the adjusting mechanism as the rocker arm (100) rotates, so as to drive the adjusting mechanism to open or tighten the shoe (300).

2. The rear axle brake structure according to claim 1, characterized in that: The telescopic mechanism comprises an upper pressure block (201), a sliding assembly and a lower plunger (202); the side of the upper pressure block (201) facing the outside of the hydraulic chamber is connected to the end of the rocker arm (100); the side of the upper pressure block (201) facing the inside of the hydraulic chamber is provided with the lower plunger (202); the sliding assembly is arranged between the upper pressure block (201) and the lower plunger (202); the sliding assembly can press down or lift the lower plunger (202) as the upper pressure block (201) rotates, so as to drive the adjustment mechanism to open or tighten the shoe (300).

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

4. The rear axle brake structure according to claim 3, characterized in that: 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 slideway (204) is fixedly arranged in the positioning hole.

5. The rear axle brake structure according to claim 4, characterized in that: At least two of the steel columns (203) are provided, and the number of the slideways (204) and the positioning holes corresponds one to one with the number of the steel columns (203).

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

7. The rear axle brake structure according to claim 6, characterized in that: The regulating mechanism comprises a regulating piston (207), the regulating piston (207) being arranged on both sides of the bottom of the hydraulic chamber and respectively connected to the shoe block (300), and the regulating plug (206) can drive the regulating piston (207) to move.

8. The rear axle brake structure according to claim 7, characterized in that: The pistons are connected via elastic members.

9. The rear axle brake structure according to claim 8, characterized in that: The side wall of the housing (200) is also connected to a compensation chamber (400), and the compensation chamber (400) is in communication with the hydraulic chamber.

10. A tricycle, characterized in that: It comprises the rear axle braking structure as described in any one of claims 1 to 9.

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