Multi-expansion stopper

Abstract

The utility model relates to the technical field of stoppers, in particular to a multi-expansion stopper. A plurality of fixing shafts are arranged in the shell, each fixing shaft is movably provided with a brake pad, the shell is movably provided with a connecting shaft, the connecting shaft is located in the center of the brake pads, one end of the connecting shaft is provided with a triangular cam, the triangular cam is located on the front face of the shell, and the other end of the connecting shaft is provided with a crank. The crank is arranged on the back of the shell. During braking, the three groups of brake modules (namely the three brake pads) are in friction with a hub at the same time, so that the number of friction surfaces is greatly increased, and compared with a traditional stopper, more contact areas are provided to interact with the hub, and more friction surfaces means that larger friction force is generated, and the friction force is increased. Therefore, the braking response of the brake is quicker and more sensitive, and more reliable safety guarantee can be provided for a user no matter under the emergency braking condition or in the daily deceleration operation.

Description

Technical Field

[0001] The utility model relates to the technical field of stoppers, in particular to a multi-expansion stopper. Background Art

[0002] In the current field of braking technology, the expansion brake is a common braking device, and its braking principle is to brake from the inside out. When the brake line is pulled, only one side of the brake block is stretched open to achieve the braking effect. The expansion brake is also called the follow-up brake, which is mainly composed of a brake module and a brake hub. The brake hub is a round, hollow metal disc, shaped like a pot cover, and the dots are connected to the wheels or axles. There are two half-moon-shaped brake modules docked inside the wheel hub. Since the brake pads are docked in a half-moon shape, the two sharp points of each brake module correspond to each other, and one end of the docking point is a cylindrical shaft, and the other end is an elliptical shaft brake expansion point. When the brake is pressed, the elliptical shaft rotates, pushing the corresponding brake module, separating the half-moon brake module, and the outer side of the brake module rubs against the wheel hub to generate resistance to suppress the vehicle speed.

[0003] However, there are some problems with the existing brake. Only one elliptical shaft drives the brake module to brake, and the other brake module assists the brake. There are few friction points for braking, and the braking response is slow. In addition, the elliptical shaft drives the brake pad as the main brake module. Long-term work will make the main brake module thinner and shorten its life, affecting the braking effect. Utility Model Content

[0004] The utility model aims to provide a multi-expansion stopper to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution, which includes a shell, several fixed shafts are arranged in the shell, each of the fixed shafts is movably provided with a brake pad, a connecting shaft is movably provided on the shell, the connecting shaft is located at the center of several brake pads, a triangular cam is arranged at one end of the connecting shaft, the triangular cam is located at the front side of the shell, and a crank is arranged at the other end of the connecting shaft, and the crank is arranged on the back side of the shell.

[0006] As a preferred embodiment of the present invention, each brake pad is provided with a pair of connecting columns, and the connecting columns are connected to the connecting columns on adjacent brake pads through tension springs.

[0007] As a preferred embodiment of the present invention, a stop grinding block is provided on the outer wall of each brake pad.

[0008] Compared with the prior art, the above technical solution of the utility model has the following beneficial technical effects:

[0009] 1. When the utility model brakes, three groups of brake modules (i.e., three brake pads) simultaneously friction with the wheel hub. This design greatly increases the number of friction surfaces, provides more contact area to interact with the wheel hub compared with traditional stoppers, and more friction surfaces mean greater frictional force, thus making the braking reaction faster and more sensitive. Whether in emergency braking situations or daily deceleration operations, it can provide more reliable safety protection for users.

[0010] 2. Each group of brake modules of the utility model has a wide friction surface. Due to the action of the triangular cam, the three brake pads expand outward with the corresponding fixed shafts as the centers and evenly separate around, making the contact between each brake pad and the wheel hub more sufficient. This wide distribution of friction surfaces ensures the uniformity of frictional force. When the braking operation occurs, the pressure borne by each brake pad is relatively balanced, and there will be no situation of local excessive wear.

[0011] 3. Through the uniform frictional force, the utility model not only improves the braking performance but also reduces the wear caused by long-term friction of the brake modules. Traditional stoppers may cause severe wear in some parts due to excessive local force, shortening the service life of the brake modules. In this device, the uniform frictional force makes the wear degree of each brake pad relatively consistent, thus increasing the overall service life of the brake modules on the whole. This means reducing the frequency of repairing and replacing the brake modules, lowering the usage cost, and at the same time improving the reliability and stability of the entire device.

[0012] 4. The brake pads in the utility model can also be set to two or six, and different numbers of brake pads can be selected according to different vehicle models, improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the overall front structural schematic diagram of the utility model;

[0014] Figure 2 is the overall back structural schematic diagram of the utility model;

[0015] Figure 3 is the structural schematic diagram after splitting each component of the utility model.

[0016] Reference numerals: housing 1, fixed shaft 100, brake pad 2, stop grinding block 3, connecting shaft 4, triangular cam 5, crank 6, connecting column 7, tension spring 8. DETAILED DESCRIPTION OF THE INVENTION

[0017] To make the objectives, technical solutions, and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present utility model. In addition, in the following descriptions, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0018] As Figures 1-3 shown, a multi-expansion stopper proposed by the present utility model includes a housing 1. Inside the housing 1, several fixed shafts 100 are provided. On each fixed shaft 100, a brake pad 2 is movably installed, such that the brake pad 2 can move to a certain extent around the fixed shaft 100. A connecting shaft 4 is movably provided on the housing 1. The connecting shaft 4 is located at the central position of several brake pads 2. One end of the connecting shaft 4 is provided with a triangular cam 5. The triangular cam 5 is located on the front surface of the housing 1. The other end of the connecting shaft 4 is provided with a crank 6. The crank 6 is installed on the back surface of the housing 1;

[0019] In addition, a pair of connecting columns 7 are provided on each brake pad 2. These connecting columns 7 are connected to the connecting columns 7 on the adjacent brake pads 2 through a tension spring 8. Through the connection of the tension spring 8, the brake pads 2 can restrain each other, ensuring stability and coordination during the working process. At the same time, a stop grinding block 3 is provided on the outer wall of each brake pad 2. When the braking system works, the stop grinding block 3 can generate friction with the wheel hub, thereby generating resistance to inhibit the vehicle speed.

[0020] During the use process, when you step on the brake, it will drive the crank 6 to move. When the crank 6 rotates, it will further drive the connecting shaft 4 to cause the triangular cam 5 to rotate. After the triangular cam 5 rotates a certain angle, it will push three brake pads 2. At this time, the three brake pads 2 expand outward and separate around the corresponding fixed shafts 100 as the centers. At this time, several stop grinding blocks 3 will generate friction with the wheel hub, thereby generating resistance to achieve the purpose of inhibiting the vehicle speed.

[0021] It should be understood that the above specific embodiments of the present utility model are merely used for exemplary illustration or explanation of the principle of the present utility model and do not constitute a limitation to the present utility model. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present utility model shall be included within the protection scope of the present utility model. In addition, the appended claims of the present utility model are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A multi-expansion stopper, which comprises a housing (1), and is characterized in that: There are several fixed shafts (100) arranged inside the housing (1). A brake pad (2) is movably arranged on each fixed shaft (100). A connecting shaft (4) is movably arranged on the housing (1). The connecting shaft (4) is located at the center of several brake pads (2). One end of the connecting shaft (4) is provided with a triangular cam (5). The triangular cam (5) is located on the front of the housing (1). The other end of the connecting shaft (4) is provided with a crank (6). The crank (6) is arranged on the back of the housing (1).

2. The multi-stop according to claim 1, characterized in that: A pair of connecting columns (7) are arranged on each brake pad (2). The connecting columns (7) are connected to the connecting columns (7) on the adjacent brake pads (2) through a tension spring (8).

3. The multi-stop according to claim 2, wherein: A stop grinding block (3) is arranged on the outer wall of each brake pad (2).

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