Built-in drum brake of brake rocker arm of brand-new scooter

Abstract

The utility model discloses a brand-new scooter brake rocker arm built-in drum brake which comprises a drum brake assembly. The drum brake assembly comprises a drum brake end cover, an end cover shaft sleeve fixed to the middle of the drum brake end cover, a brake rocker arm rotationally connected into the drum brake end cover, an expansion half shaft connected with the brake rocker arm, a first brake shoe attached to one side of the expansion half shaft, and a second brake shoe attached to the other side of the expansion half shaft. The first brake shoe is connected with the second brake shoe through the spring, and the drum brake seat assembly comprises a drum brake seat, a sleeve fixed to the inner side of the drum brake seat and a steel ring fixed to the inner side of the drum brake seat. The drum brake assembly and the drum brake seat assembly are matched with each other to form a built-in drum brake structure, so that in use, the built-in brake rocker arm increases drum brake integration, reduces influence on appearance design, and protects easily-damaged accessories, and the built-in brake rocker arm is convenient to use and is convenient to use. And the collision damage of the external rocker arm in the use process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of drum brakes, in particular to a drum brake with a built-in brake rocker arm for a new scooter. Background Art

[0002] The brakes of electric scooters are divided into disc brakes and drum brakes. Considering the riding characteristics of scooters: the wheel diameter is small (generally 8-12 inches) and the riding posture is higher than the center of gravity of general electric vehicles; drum brakes are more suitable for scooters in terms of braking performance, and can provide more linear braking characteristics and prevent the front wheel of the whole vehicle from locking. In the prior art, the integrity of the external rocker arm drum brake is not strong: the wheel diameter of the scooter is small, and the application of the general external rocker arm drum brake destroys the integrity of the scooter as a small and fun riding tool, reducing the appearance. The existing external rocker arm drum brake is prone to damage: the wheel diameter of the scooter is small, and the external rocker arm drum brake is used. The drum brake movement mechanism is exposed to the outside of the ground, and it is easy to be damaged after colliding with hard debris such as stones on the ground. For this reason, we propose a new scooter brake rocker arm built-in drum brake. Utility Model Content

[0003] Therefore, the purpose of the utility model is to provide a new scooter brake rocker arm with a built-in drum brake. Through the cooperation of the drum brake assembly and the drum brake seat assembly, a built-in drum brake structure is formed, so that when in use, the built-in brake rocker arm increases the integrity of the drum brake, reduces the impact on the appearance design, and protects the easily damaged accessories. The built-in brake rocker arm reduces the damage to the external rocker arm during use.

[0004] In order to solve the above technical problems, according to one aspect of the utility model, the utility model provides the following technical solution: a new scooter brake rocker arm with built-in drum brake, comprising:

[0005] A drum brake assembly, the drum brake assembly comprising a drum brake end cover, an end cover sleeve fixed at a middle position of the drum brake end cover, a brake rocker arm rotatably connected in the drum brake end cover, an expansion half shaft connected to the brake rocker arm, a first brake shoe attached to one side of the expansion half shaft, a second brake shoe attached to the other side of the expansion half shaft, and a spring connecting the first brake shoe and the second brake shoe;

[0006] A drum brake seat assembly comprises a drum brake seat, a sleeve fixed on the inner side of the drum brake seat, and a steel ring fixed on the inner side of the drum brake seat.

[0007] As a preferred solution of the built-in drum brake in the brake rocker arm of the new scooter described in the utility model, the drum brake assembly further includes a dust cover arranged on the bottom surface of the drum brake end cover;

[0008] Wherein, the dust cover is locked by screws.

[0009] As a preferred solution of the built-in drum brake in the brake rocker arm of the new scooter described in the utility model, the drum brake assembly further includes a brake wire clip attached to the bottom surface of the brake rocker arm;

[0010] Wherein, the brake cable clamp positions and locks the brake cable.

[0011] As a preferred solution of the built-in drum brake in the brake rocker arm of a new scooter described in the utility model, the sleeve and the end cover sleeve are fitted with each other, and the first brake shoe and the second brake shoe are located in the steel ring.

[0012] As a preferred solution of the built-in drum brake of the new scooter brake rocker arm described in the utility model, the expanded half-axle is flat, and the two side walls of the flat expanded half-axle are respectively in contact with the first brake shoe and the second brake shoe.

[0013] As a preferred solution of the built-in drum brake in the brake rocker arm of a new scooter described in the utility model, two springs are provided, and the two springs are symmetrically arranged in the middle position of the first brake shoe and the second brake shoe.

[0014] Compared with the prior art, the advantages of the utility model are:

[0015] Through the cooperation of the drum brake assembly and the drum brake seat assembly, a built-in drum brake structure is formed, so that when in use, the built-in brake rocker arm increases the integrity of the drum brake, reduces the impact on the appearance design, and protects the easily damaged accessories. The built-in brake rocker arm reduces the damage to the external rocker arm during use.

[0016] When in use, the brake cable is locked by the brake cable clamp, so that the brake cable will pull the brake rocker arm during the upward pulling process, so that the brake rocker arm will drive the expanding half-shaft circular shaft to rotate. Since the top surface of the expanding half-shaft is flat, the expanding half-shaft will squeeze the first brake shoe and the second brake shoe during the rotation process, so that the first brake shoe and the second brake shoe are respectively opened to the outside. At this time, the opened first brake shoe and the second brake shoe are directly in contact with the steel rim, so that braking can be completed by friction. When braking is completed, the spring drives the first brake shoe and the second brake shoe to reset for the next braking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 This is a first-view structural diagram of the utility model;

[0019] Figure 2 This is a structural diagram of the utility model from a second viewing angle;

[0020] Figure 3 This is a structural diagram of the expansion half shaft of the utility model;

[0021] Figure 4 It is a structural diagram of the drum brake seat assembly of the utility model.

[0022] In the figure: 11, drum brake end cover; 12, end cover sleeve; 13, brake rocker arm; 14, expansion half shaft; 15, first brake shoe; 16, second brake shoe; 17, spring; 18, dust cover; 19, brake cable clip; 21, drum brake seat; 22, sleeve; 23, steel rim. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0025] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0026] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0027] The utility model provides a brand-new scooter brake rocker arm with built-in drum brake. The drum brake assembly and the drum brake seat assembly cooperate with each other to form a built-in drum brake structure. When in use, the built-in brake rocker arm increases the integrity of the drum brake, reduces the impact on the appearance design, and protects easily damaged accessories by putting them inside. The built-in brake rocker arm reduces the damage of the external rocker arm during use.

[0028] Figure 1 , Figure 2 , Figure 3 , Figure 4 The figure shows the overall structure of a new scooter brake rocker arm with built-in drum brake in the utility model. Figure 1 , Figure 2 , Figure 3 , Figure 4 The main structure of this embodiment includes: a drum brake assembly and a drum brake seat assembly.

[0029] The drum brake assembly is used to cooperate with the drum brake seat assembly to complete braking. Specifically, the drum brake assembly includes a drum brake end cover 11, an end cover sleeve 12 fixed at the middle position of the drum brake end cover 11, a brake rocker arm 13 rotatably connected to the drum brake end cover 11, an expansion half shaft 14 connected to the brake rocker arm 13, a first brake shoe 15 attached to one side of the expansion half shaft 14, a second brake shoe 16 attached to the other side of the expansion half shaft 14, and a spring 17 connecting the first brake shoe 15 and the second brake shoe 16. The drum brake assembly also includes a dust cover 18 arranged on the bottom surface of the drum brake end cover 11;

[0030] Wherein, the dust cover 18 is locked by screws;

[0031] The drum brake assembly also includes a brake wire clip 19 attached to the bottom surface of the brake rocker arm 13;

[0032] Among them, the brake cable clamp 19 positions and locks the brake cable;

[0033] During specific use, the brake line is locked by the brake line clip 19, so that the brake line will pull the brake rocker arm 13 during the upward pulling process, and the brake rocker arm 13 will drive the circular axis of the expanding half-shaft 14 to rotate. Since the top surface of the expanding half-shaft 14 is flat, the expanding half-shaft 14 will squeeze the first brake shoe 15 and the second brake shoe 16 during the rotation process, so that the first brake shoe 15 and the second brake shoe 16 are respectively opened to the outside, so that friction braking can be performed in cooperation with the drum brake seat assembly, and the dust cover 18 is used to prevent dust from entering.

[0034] The drum brake seat assembly is used for braking. Specifically, the drum brake seat assembly includes a drum brake seat 21, a sleeve 22 fixed on the inner side of the drum brake seat 21, and a steel ring 23 fixed on the inner side of the drum brake seat 21. When in use, the opened first brake shoe 15 and the second brake shoe 16 directly contact the steel ring 23, so that braking can be completed by friction. When braking is completed, the spring 17 drives the first brake shoe 15 and the second brake shoe 16 to reset for the next braking.

[0035] Working principle: the brake line is locked by the brake line clip 19, so that the brake line will pull the brake rocker arm 13 during the upward pulling process, so that the brake rocker arm 13 will drive the expanded half-shaft 14 to rotate. Since the top surface of the expanded half-shaft 14 is flat, the expanded half-shaft 14 will squeeze the first brake shoe 15 and the second brake shoe 16 during the rotation process, so that the first brake shoe 15 and the second brake shoe 16 are opened outward respectively. At this time, the opened first brake shoe 15 and the second brake shoe 16 are directly in contact with the steel ring 23, so that braking can be completed by friction. When braking is completed, the spring 17 drives the first brake shoe 15 and the second brake shoe 16 to reset for the next braking.

[0036] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A new scooter brake rocker with built-in drum brake, characterized in that: include: A drum brake assembly, the drum brake assembly comprising a drum brake end cover (11), an end cover shaft sleeve (12) fixed at a middle position of the drum brake end cover (11), a brake rocker arm (13) rotatably connected to the drum brake end cover (11), an expansion half shaft (14) connected to the brake rocker arm (13), a first brake shoe (15) attached to one side of the expansion half shaft (14), a second brake shoe (16) attached to the other side of the expansion half shaft (14), and a spring (17) connecting the first brake shoe (15) and the second brake shoe (16); A drum brake seat assembly comprises a drum brake seat (21), a sleeve (22) fixed inside the drum brake seat (21), and a steel ring (23) fixed inside the drum brake seat (21).

2. According to claim 1, a new scooter brake rocker arm with built-in drum brake is characterized in that: The drum brake assembly further comprises a dust cover (18) arranged on the bottom surface of the drum brake end cover (11); Wherein, the dust cover (18) is locked by screws.

3. A new scooter brake rocker with built-in drum brake according to claim 2, characterized in that: The drum brake assembly also includes a brake wire clip (19) attached to the bottom surface of the brake rocker arm (13); Wherein, the brake wire clamp (19) positions and locks the brake wire.

4. According to claim 3, a new scooter brake rocker arm with built-in drum brake is characterized in that: The sleeve (22) and the end cover sleeve (12) are fitted together, and the first brake shoe (15) and the second brake shoe (16) are located inside the steel ring (23).

5. According to claim 4, a new scooter brake rocker arm with built-in drum brake is characterized in that: The expanding half shaft (14) is flat, and the two side walls of the flat expanding half shaft (14) are respectively in contact with the first brake shoe (15) and the second brake shoe (16).

6. The new scooter brake rocker arm with built-in drum brake according to claim 5, characterized in that: Two springs (17) are provided, and the two springs (17) are symmetrically arranged at the middle position between the first brake shoe (15) and the second brake shoe (16).

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