Brake shoe assembly for electric tricycle

Abstract

The utility model relates to the technical field of vehicle brakes, in particular to a brake shoe assembly for an electro-tricycle, which comprises a chassis and a brake drum, a double-end cylinder is fixedly arranged on the chassis, two brake shoes are slidably connected onto the chassis, friction plates are respectively arranged on the outer sides of the two brake shoes, and the brake drum is arranged on the chassis. The two brake shoes are symmetrically distributed on the two sides of the double-end air cylinder. Comprising two transmission assemblies, the double-end air cylinder drives brake shoes on the corresponding sides to slide through the transmission assemblies, each transmission assembly comprises a connecting frame connected to the corresponding brake shoe, the connecting frames are connected to a chassis in a sliding mode, and the connecting frames are arranged on the sides, close to each other, of the two brake shoes. A rotating part is movably connected to the output end of the double-end air cylinder and is in transmission connection with the connecting frame. A reset assembly is further arranged between the two brake shoes. The two brake shoes are driven to move towards the inner wall of the brake drum, and the problem of local excessive abrasion of the friction plates is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle brake technology field, concretely relates to a brake shoe assembly for electric tricycle. BACKGROUND

[0002] The vehicle usually adopts two kinds of braking modes, one is drum brake, and the other is disc brake, the drum brake generally includes brake drum, two opposite brake shoes installed in the brake drum, double -headed cylinder and brake bottom plate, one end of brake shoe is pivoted on brake bottom plate through support pin, the other end is provided with the output end of double -headed cylinder abutment, double -headed cylinder moves and extrudes two brake shoe end, makes two brake shoes swing to two sides respectively, the friction plate outside brake shoe is contacted with the inner surface of brake drum, and the friction between the friction plate on brake shoe and brake drum forms the braking force.

[0003] The utility model discloses a brake shoe assembly of braking stability discloses a brake shoe assembly of braking stability, including bottom plate and brake drum, the top of bottom plate is provided with brake assembly, brake assembly includes two double -headed cylinders fixedly installed in the front of bottom plate, two telescopic rods of two double -headed cylinders are fixedly installed with connecting piece between two, the inside of two connecting pieces is provided with heat dissipation component, and the opposite side between two connecting pieces is provided with reset component, and the bottom of two connecting pieces is provided with guide component, and the opposite side of two connecting pieces is provided with friction plate. Brake shoe assembly of braking stability, avoid the problem that brake shoe surface deformation and friction plate produce excessive wear due to uneven tangential force of all parts of friction plate.

[0004] However, the patent is through two double -headed cylinders and drives connecting piece opposite movement and brake drum abutment friction to realize stable braking, therefore needs to make the hydraulic oil of vehicle equal flow into two double -headed cylinders, usually needs the equipment such as flow divider to carry out hydraulic oil shunting, but the precision of flow divider is general, and the flow dividing equipment of high precision is expensive, and the economy is poor, in addition, since the conventional drum brake only has one double -headed cylinder, therefore the two double -headed cylinders of the patent will cause the hydraulic oil flow of single double -headed cylinder in unit time to be low, make brake time extend, lead to certain risk when being used with current vehicle hydraulic system, not applicable to current vehicle use, and the adaptation range is narrow. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a brake shoe assembly for electric tricycle to solve the above-mentioned shortcomings in the prior art.

[0006] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The utility model provides an electric tricycle brake shoe assembly, including chassis and brake drum, the double -end cylinder is fixedly arranged on the chassis, two brake shoes are slidably connected on the chassis, the outer side of two brake shoes is provided with the friction plate respectively, and two brake shoes are symmetrically distributed on the two sides of double -end cylinder, including two transmission assemblies, the double -end cylinder drives the brake shoe of corresponding side to slide through transmission assembly, the transmission assembly includes the connecting frame connected on the brake shoe, the connecting frame is slidably connected on the chassis, the connecting frame is arranged on the side of two brake shoes and is close to each other, the output end of double -end cylinder is movably connected with the rotating part, and the rotating part is in transmission with the connecting frame, and reset assembly is further arranged between two brake shoes.

[0008] Further, the rotating part includes a first rotating rod rotatably connected to the chassis, an end of the first rotating rod is slidably connected to a fixed rod on the output end of the double-end cylinder, and a second rotating rod is fixedly connected to the first rotating rod.

[0009] Further, the connecting frame includes a straight plate slidably connected to the chassis, the straight plate abuts against an end of the second rotating rod, and control portions are fixedly connected to both sides of the straight plate, the control portions are detachably connected to the brake shoes.

[0010] Further, the control portion includes a control rod fixedly connected to the straight plate, a sliding rod is slidably connected to the control rod, a baffle is fixedly arranged on the sliding rod, the baffle is arranged between the control rod and the brake shoe, a compression spring is arranged between the baffle and the control rod, the compression spring is inserted into the outer side of the sliding rod, a plurality of clamping holes adapted to the sliding rod are formed in the brake shoe, and the sliding rod extends into the clamping hole under the action of the compression spring.

[0011] Further, the reset assembly includes two symmetrically arranged tension springs, and both ends of the tension springs are connected to the brake shoes.

[0012] Further, the brake drum is arranged on the outer side of the chassis, and the inner wall of the brake drum is adapted to the outer side of the friction plate.

[0013] In the above technical solution, the electric tricycle brake shoe assembly provided by the utility model has the following beneficial effects:

[0014] By arranging the transmission assembly, the output end of the double-end cylinder moves through the rotating part to drive the connecting frame to move, the connecting frame moves to drive the brake shoe to move, so that the outer side of the friction plate on the brake shoe abuts against the inner wall of the brake drum, and the brake is completed through the friction force between the friction plate and the brake drum. The utility model drives two brake shoes to move towards the inner wall of the brake drum through the innovative structure, avoids the drawbacks of two double-end cylinders in the prior art, and solves the problem of local excessive wear of the friction plate.

[0015] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not intended to be restrictive of the disclosure.

[0016] This document provides an overview of various implementations or examples of the technology described in this disclosure and is not intended to be an all-inclusive or exhaustive disclosure of the technology. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0018] Figure 1 The overall structure schematic diagram provided by the embodiment of the present application is shown in the figure.

[0019] Figure 2 The internal structure schematic diagram provided by the embodiment of the present application is shown in the figure. Figure 1 ;

[0020] Figure 3 The internal structure schematic diagram provided by the embodiment of the present application is shown in the figure. Figure 2 ;

[0021] Figure 4 The A local enlarged structure schematic diagram provided by the embodiment of the present application is shown in the figure.

[0022] Figure 5 The transmission assembly structure schematic diagram provided by the embodiment of the present application is shown in the figure.

[0023] Figure 6 The double-head cylinder structure schematic diagram provided by the embodiment of the present application is shown in the figure

[0024] Explanation of reference signs:

[0025] 1, chassis; 2, brake drum; 3, double-head cylinder; 31, fixed rod; 4, brake shoe; 5, friction plate; 6, transmission assembly; 61, connecting frame; 611, straight plate; 612, control rod; 613, sliding rod; 614, baffle; 615, compression spring; 616, clamping hole; 62, rotating part; 621, first rotating rod; 622, second rotating rod; 7, reset assembly; DETAILED DESCRIPTION

[0026] To make the purposes, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure. Based on the described embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present disclosure.

[0027] Please refer to Figures 1-6 A brake shoe 4 assembly for an electric tricycle, comprising a chassis 1 and a brake drum 2, a double-head cylinder 3 is fixedly arranged on the chassis 1, two brake shoes 4 are slidably connected to the chassis 1, and the outer sides of the two brake shoes 4 are respectively provided with friction plates 5, and the two brake shoes 4 are symmetrically distributed on the two sides of the double-head cylinder 3; two transmission assemblies 6 are included, the double-head cylinder 3 drives the brake shoe 4 on the corresponding side to slide through the transmission assembly 6, the transmission assembly 6 includes a connecting frame 61 connected to the brake shoe 4, the connecting frame 61 is slidably connected to the chassis 1, the connecting frame 61 is arranged on the side where the two brake shoes 4 are close to each other, a rotating part 62 is movably connected to the output end of the double-head cylinder 3, and the rotating part 62 is in transmission connection with the connecting frame 61; a reset assembly 7 is further arranged between the two brake shoes 4.

[0028] The double-head cylinder 3 is in communication with a hydraulic system on the electric tricycle, and the hydraulic system can make the two output ends of the double-head cylinder 3 extend or retract by controlling the movement of hydraulic oil, which is a common technical means for those skilled in the art and will not be described here.

[0029] Referring to the drawings Figure 3 A first sliding block is fixedly arranged on the chassis 1, so that the brake shoe 4 can move along the first sliding block to the inner wall direction of the brake drum 2, and the movement of the brake shoe 4 towards the axial direction of the chassis 1 (i.e. the direction perpendicular to the chassis 1) is limited.

[0030] Further, the rotating part 62 includes a first rotating rod 621 rotatably connected to the chassis 1, the end of the first rotating rod 621 is slidably connected with a fixed rod 31 on the output end of the double-head cylinder 3, and a second rotating rod 622 is further fixedly connected to the first rotating rod 621.

[0031] The movement of the output end of the double-head cylinder 3 drives the movement of the fixed rod 31, the movement of the fixed rod 31 drives the rotation of the first rotating rod 621 around its rotating shaft, the rotation of the first rotating rod 621 drives the rotation of the second rotating rod 622, the rotation of the second rotating rod 622 drives the movement of the connecting frame 61, and the movement of the connecting frame 61 drives the movement of the brake shoe 4 to abut against the inner wall of the brake drum 2.

[0032] Further, the connecting frame 61 comprises a straight plate 611 slidably connected with the bottom plate 1, the straight plate 611 abuts against the end of the second rotating rod 622, and two control parts are fixedly connected with the two sides of the straight plate 611 respectively, and the control parts are detachably connected with the brake shoes 4.

[0033] Referring to the accompanying drawings Figure 3 and the accompanying drawings Figure 5 , the bottom plate 1 is fixedly provided with a second sliding block, the straight plate 611 is connected with the second sliding block, so that the straight plate 611 moves along the second sliding block towards the inner wall of the brake drum 2, and the second sliding block also limits the straight plate 611 to move towards the axial direction of the bottom plate 1 (i.e. the direction perpendicular to the bottom plate 1).

[0034] Further, the control part comprises a control rod 612 fixedly connected with the straight plate 611, a sliding rod 613 slidably connected with the control rod 612, a baffle 614 fixedly provided on the sliding rod 613, the baffle 614 being arranged between the control rod 612 and the brake shoes 4, a compression spring 615 being arranged between the baffle 614 and the control rod 612, the compression spring 615 being inserted on the outer side of the sliding rod 613, a plurality of clamping holes 616 being formed on the brake shoes 4 and matched with the sliding rod 613, and the sliding rod 613 extends into the clamping holes 616 under the action of the compression spring 615.

[0035] By pulling the sliding rod 613 to drive the baffle 614 to move and compress the compression spring 615, the sliding rod 613 is separated from the clamping holes 616, and then the sliding rod 613 extends into other clamping holes 616, so as to change the distance between the two brake shoes 4 (the two brake shoes 4 move towards each other under the action of the reset assembly 7 until the straight plate 611 abuts against the end of the second rotating rod 622, i.e. the straight plate 611 and the end of the second rotating rod 622 always abut against each other under the action of the reset assembly 7), at this time, the distance between the brake shoes 4 and the brake drum 2 is changed, so as to adjust the sensitivity of the electric vehicle brake.

[0036] Further, the reset assembly 7 comprises two symmetrical tension springs, the two ends of the tension springs are connected with the brake shoes 4 respectively.

[0037] Further, the brake drum 2 is arranged on the outer side of the bottom plate 1, and the inner wall of the brake drum 2 is matched with the outer side of the friction plate 5.

[0038] The prior art brake drum 2 is usually connected with the rotating shaft of the electric tricycle and rotates together with the wheel, and the chassis 1 is fixedly connected with the frame of the electric tricycle, so that when the friction plate 5 on the brake shoe 4 on the chassis 1 abuts against the inner wall of the brake drum 2, the tire is braked, and the installation of the chassis 1 and the brake drum 2 on the electric tricycle is the prior art and is a common technical means for the person skilled in the art, which will not be described in detail.

[0039] Working principle: the output end of the double-head cylinder 3 moves to drive the fixed rod 31 to move, the fixed rod 31 moves to drive the first rotating rod 621 to rotate around its rotating shaft, the first rotating rod 621 rotates to drive the second rotating rod 622 to rotate, the second rotating rod 622 rotates to drive the connecting frame 61 to move, the connecting frame 61 moves to drive the brake shoe 4 to move, so that the friction plate 5 on the brake shoe 4 abuts against the inner wall of the brake drum 2, thereby completing the braking of the electric tricycle, and avoiding the problem of local severe friction of the friction plate 5.

[0040] The above only describes some exemplary embodiments of the present application by way of illustration, without doubt, for the person skilled in the art, the described embodiments can be modified in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection of the present application.

Claims

1. A brake shoe assembly for an electric tricycle, comprising a chassis (1) and a brake drum (2), a double-head cylinder (3) is fixedly arranged on the chassis (1), characterized in that: Two brake shoes (4) are slidably connected to the chassis (1), and outer sides of the two brake shoes (4) are respectively provided with friction plates (5), and the two brake shoes (4) are symmetrically distributed on both sides of the double-head cylinder (3). Two transmission assemblies (6) are arranged, the double-head cylinder (3) drives the brake shoe (4) on the corresponding side to slide through the transmission assembly (6), the transmission assembly (6) comprises a connecting frame (61) connected to the brake shoe (4), the connecting frame (61) is slidably connected to the chassis (1), the connecting frame (61) is arranged on the side where the two brake shoes (4) are close to each other, and a rotating part (62) is movably connected to the output end of the double-head cylinder (3), and the rotating part (62) is in transmission connection with the connecting frame (61). Reset assemblies (7) are further arranged between the two brake shoes (4).

2. The brake shoe assembly for a motor tricycle as claimed in claim 1 wherein, The rotating part (62) comprises a first rotating rod (621) rotatably connected to the chassis (1), an end of the first rotating rod (621) is slidably connected to the fixed rod (31) on the output end of the double-head cylinder (3), and a second rotating rod (622) is further fixedly connected to the first rotating rod (621).

3. The brake shoe assembly for a motor tricycle as claimed in claim 2 wherein, The connecting frame (61) comprises a straight plate (611) slidably connected to the chassis (1), the straight plate (611) is in abutment with the end of the second rotating rod (622), and control parts are fixedly connected to the two sides of the straight plate (611), and the control parts are detachably connected with the brake shoe (4).

4. The brake shoe assembly for a motor tricycle as claimed in claim 3 wherein, The control part comprises a control rod (612) fixedly connected to the straight plate (611), a sliding rod (613) is slidably connected to the control rod (612), a baffle (614) is fixedly arranged on the sliding rod (613), the baffle (614) is arranged between the control rod (612) and the brake shoe (4), a compression spring (615) is arranged between the baffle (614) and the control rod (612), the compression spring (615) is inserted into the outer side of the sliding rod (613), a plurality of clamping holes (616) matched with the sliding rod (613) are formed in the brake shoe (4), and the sliding rod (613) extends into the clamping hole (616) under the action of the compression spring (615).

5. The brake shoe assembly for a motor tricycle as claimed in claim 1 wherein, The reset assembly (7) comprises two symmetrically arranged tension springs, and the two ends of the tension spring are respectively connected to the brake shoe (4).

6. The brake shoe assembly of claim 1, wherein, The brake drum (2) is arranged on the outer side of the chassis (1), and the inner wall of the brake drum (2) is matched with the outer side of the friction plate (5).

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