Brake for a three-wheeled vehicle with bearings

Abstract

The utility model discloses a bearing type tricycle brake, it includes brake disc, two brake components, elastic part and rocker assembly, one side symmetry fixed connection of brake disc has two mounting shafts, two brake components respectively through the mounting ring of its bottom with corresponding mounting shaft rotation connection, and two brake components are connected through elastic part between, rocker assembly includes rocker main body, bearing main body and connecting rod and the oval cam fixed on it, bearing main body rotatablely is arranged in the bearing seat of brake disc, through above -mentioned structure, through adopting with bearing main body plus oval cam as the core's rocker transmission structure, the high wear sliding friction between rocker pivot and brake component in traditional brake is converted into bearing internal low resistance, high -efficient rolling friction, has solved the brake delay, failure problem that produces gap because of wearing after long -term use.

Description

Technical Field

[0001] This utility model relates to the field of brake technology, and in particular to a bearing-type brake for tricycles. Background Technology

[0002] As a flexible and convenient means of transportation, tricycles are widely used in urban and rural short-distance transportation, logistics distribution, and daily commuting. The reliability of their braking system is directly related to driving safety.

[0003] Currently, most tricycle brakes on the market still use the traditional rocker arm shaft directly driven brake assembly, where the power transmission between the brake rocker arm shaft and the disc sleeve relies heavily on sliding friction. Over long-term use, the contact surfaces are prone to wear due to continuous friction, leading to a gradual increase in the clearance and causing problems such as brake lag, increased pedal travel, decreased braking force, or even brake failure. This not only affects the sensitivity of the braking response but also poses safety hazards. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a bearing-type brake for tricycles, which solves the problem of braking delay and failure caused by long-term wear and tear in traditional tricycle brakes.

[0005] This utility model also provides a bearing-type tricycle brake as described above, comprising: a brake disc, two brake assemblies, an elastic element, and a rocker arm assembly; two mounting shafts are symmetrically fixedly connected to one side of the brake disc; the two brake assemblies are respectively rotatably connected to the corresponding mounting shafts through sleeves at their bottoms, and the two brake assemblies are connected to each other through the elastic element; the rocker arm assembly includes a rocker arm body, a bearing body, and an elliptical cam fixed to the rocker arm body; the bearing body is rotatably inserted into a bearing seat opened on the brake disc and rotatably connected to the bearing seat; the elliptical cam is located between the two brake assemblies above.

[0006] According to the bearing-type three-wheeled vehicle brake of this utility model, the brake assembly includes a back steel, a brake pad is fixedly connected to one side of the back steel, and a crescent-shaped piece with a connecting hole is fixedly connected to the other side. The two ends of the elastic member are respectively inserted into the connecting holes of the two brake assemblies; the sleeve is fixedly connected to the bottom of the back steel.

[0007] According to the bearing-type tricycle brake of this utility model, an integrally formed square piece is fixedly connected to the top of the back steel.

[0008] According to the bearing-type three-wheeled vehicle brake of the present invention, the elliptical cam is located on top of the two square plates.

[0009] According to the bearing-type three-wheeled vehicle brake of the present invention, a stop block is detachably fixedly connected to the end of the mounting shaft, and the sleeve of the brake assembly is axially limited between the root of the mounting shaft and the stop block.

[0010] According to the bearing-type three-wheeled vehicle brake of this utility model, the brake disc has a bearing hole in the center and a plurality of brake disc mounting holes for mounting and fixing the brake disc are formed around the bearing hole.

[0011] Beneficial effects: This technical solution presents a bearing-type brake for tricycles. By employing a rocker arm transmission structure centered on a bearing body and an elliptical cam, it transforms the high-wear sliding friction between the existing brake rocker arm shaft and the disc sleeve into low-resistance, high-efficiency rolling friction within the bearing. This fundamentally solves the problem of brake lag and failure caused by wear and tear after long-term use. This design not only significantly reduces the wear rate of key moving parts, but its excellent sealing and rust-proof properties also significantly improve the brake's corrosion resistance in humid and rainy environments, ensuring long-term stable braking performance. Simultaneously, the symmetrically arranged brake components can quickly and synchronously reset under the action of elastic elements, making braking operation lighter and more responsive. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a structural diagram showing the overall connection relationship between the brake disc and the brake assembly of this utility model; Figure 2 This is a structural diagram showing the connection relationship of the brake disc in this utility model; Figure 3 This is a structural diagram showing the connection relationship between the brake assembly and the rocker arm assembly of this utility model; Figure 4 This is a structural diagram showing the side connection relationship of the brake assembly of this utility model; Figure 5 This is a structural diagram showing the connection relationship of the rocker arm assembly of this utility model.

[0013] Legend: 1. Brake disc; 2. Brake assembly; 3. Elastic element; 4. Rocker arm assembly; 101. Bearing housing; 102. Brake disc mounting hole; 103. Bearing hole; 104. Mounting shaft; 105. Stop block; 201. Backing steel; 202. Brake pad; 203. Crescent-shaped plate; 204. Sleeve; 205. Square plate; 401. Rocker arm body; 402. Bearing body; 403. Elliptical cam; 2031. Connecting hole. Detailed Implementation

[0014] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0015] Reference Figure 1-5 This utility model embodiment of a bearing-type tricycle brake includes: a brake disc 1, two brake assemblies 2, an elastic element 3, and a rocker arm assembly 4; the brake disc 1 has a disc-shaped structure with a bearing hole 103 in its center for fixed connection with the tricycle axle or related transmission components via a bearing; around the bearing hole 103, multiple brake disc mounting holes 102 are also provided on the brake disc 1 for auxiliary fixing and enhancing installation stability; a bearing seat 101 is fixedly connected inside the brake disc 1; on the side of the brake disc 1 facing the brake assembly, two mounting shafts 104 are symmetrically fixedly connected; the end of each mounting shaft 104 is detachably fixedly connected to a stop block 105 by means of threads or snaps.

[0016] Two brake assemblies 2 are arranged symmetrically with the center line of the brake disc 1 as the axis of symmetry. Each brake assembly 2 includes a back steel 201. On the side of the back steel 201 facing the brake disc 1, a brake pad 202 is fixedly connected. On the other side of the back steel 201 facing away from the brake pad 202, a crescent plate 203 is fixedly connected. The crescent plate 203 has a connection hole 2031.

[0017] At the bottom of the back steel 201, a sleeve 204 is fixedly connected. During installation, the sleeve 204 is fitted onto the corresponding mounting shaft 104 and can rotate around the mounting shaft 104. The axial position of the sleeve 204 is restricted between the root boss of the mounting shaft 104 and the square piece 105, thereby realizing the axial positioning and radial rotational connection of the brake assembly 2 on the mounting shaft 104.

[0018] The two brake components 2 are connected by an elastic element 3. In this embodiment, the elastic element 3 is preferably a tension spring. The two ends of the tension spring are respectively inserted into and hooked into the connection holes 2031 on the crescent-shaped pads 203 of the two brake components 2. In the natural state, the tension of the elastic element 3 causes the two brake components 2 to tend to move closer to each other, thereby causing the two brake pads 202 to disengage from the brake disc 1 and be in a released state.

[0019] At the top of the back steel 201, an upwardly extending square piece 205 is also fixedly connected, which is adapted to the outer ring profile of the elliptical cam 403 described below.

[0020] The rocker arm assembly 4 includes a rocker arm body 401 located outside the brake disc 1, a bearing body 402 passing through the brake disc 1, and an elliptical cam 403 fixedly mounted on the end of the rocker arm body 401. The bearing body 402 is rotatably inserted into a bearing seat 101 specially opened on the brake disc 1, and the elliptical cam 403 is located between the tops of the two brake assemblies 2.

[0021] Specifically, the bearing body 402 can be made of ball bearing. The ball bearing reduces the frictional resistance of the rocker arm assembly when rotating by replacing sliding friction with rolling friction. This allows the external force applied to the rocker arm body 401 to be transmitted to the cam 403 more efficiently, making the braking operation easier.

[0022] Working principle: When the vehicle is in the normal driving state, the elastic element 3 connecting the two brake components 2 provides a continuous inward pulling force, so that the two brake components 2 rotate around the mounting shaft 104 with the sleeve 204 at their bottom as the fulcrum and move closer to the center, thereby keeping the brake pads 202 fixed on the back steel 201 separate from the rotating brake disc 1 and without braking effect. When braking is required, a pulling force is applied to the rocker arm body 401 of the rocker arm assembly 4 through the external linkage mechanism. This pulling force drives the bearing body 402 to rotate in the bearing seat 101 of the brake disc 1. The elliptical cam 403 fixed to the end of the rocker arm body 401 rotates synchronously. The outer ring of the elliptical cam 403 then presses the square pieces 205 on the top of the two brake assemblies 2. This pressing force overcomes the pulling force of the elastic element 3, forcing the top of the two brake assemblies 2 to open outward with the mounting shaft 104 as the fulcrum, overcoming the pulling force of the elastic element 3. This lever movement ultimately causes the brake pads 202 fixed inside the back steel 201 to press tightly against both sides of the rotating brake disc 1, generating braking torque through friction, so that the vehicle slows down or stops. When the brake is released, the reset process occurs: after the external force applied to the rocker arm body 401 is removed, the tension of the elastic element 3 takes over again, pulling the crescent-shaped pads 203 of the two brake assemblies 2 back to the center, causing the entire brake assembly 2 to rotate inward and reset. This action causes the brake pads 202 to quickly and synchronously disengage from the brake disc 1, friction is released, and the brake returns to its initial released state, ensuring that the wheel can rotate freely. Throughout the process, the design of the bearing body 402 with the elliptical cam 403 effectively reduces rotational friction, making operation easier.

[0023] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A bearing-type brake for tricycles, characterized in that, include: Brake disc (1), two brake assemblies (2), elastic element (3) and rocker arm assembly (4); Two mounting shafts (104) are symmetrically fixedly connected to one side of the brake disc (1). The two brake assemblies (2) are rotatably connected to the corresponding mounting shaft (104) through the sleeve (204) at their bottom, and the two brake assemblies (2) are connected to each other through the elastic element (3); The rocker arm assembly (4) includes a rocker arm body (401), a bearing body (402), and an elliptical cam (403) fixed on the rocker arm body (401). The bearing body (402) is rotatably inserted into a bearing seat (101) opened on the brake disc (1) and is rotatably connected to the bearing seat (101). The elliptical cam (403) is located between the two brake assemblies (2) above.

2. The bearing-type brake for tricycles according to claim 1, characterized in that, The brake assembly (2) includes a back steel (201), one side of which is fixedly connected to a brake pad (202), and the other side is fixedly connected to a crescent-shaped piece (203) with a connection hole (2031). The two ends of the elastic member (3) are respectively inserted into the connection holes (2031) of the two brake assemblies (2); the sleeve (204) is fixedly connected to the bottom of the back steel (201).

3. The bearing-type brake for tricycles according to claim 2, characterized in that, A square piece (205) is fixedly connected to the top of the back steel (201).

4. The bearing-type brake for tricycles according to claim 3, characterized in that, The elliptical cam (403) is located on top of the two square pieces (205).

5. The bearing-type brake for tricycles according to claim 1, characterized in that, The end of the mounting shaft (104) is detachably fixed to a stop (105), and the sleeve (204) of the brake assembly (2) is axially limited between the root of the mounting shaft (104) and the stop (105).

6. The bearing-type brake for tricycles according to claim 1, characterized in that, The brake disc (1) has a bearing hole (103) at its center, and a plurality of brake disc mounting holes (102) for mounting and fixing the brake disc (1) are provided around the bearing hole (103).

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