CN211901395U - Drum brake's braking arm, drum brake and motor vehicles - Google Patents
Drum brake's braking arm, drum brake and motor vehicles Download PDFInfo
- Publication number
- CN211901395U CN211901395U CN202020289029.7U CN202020289029U CN211901395U CN 211901395 U CN211901395 U CN 211901395U CN 202020289029 U CN202020289029 U CN 202020289029U CN 211901395 U CN211901395 U CN 211901395U
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- pull rope
- brake
- pull
- arm
- drum brake
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Abstract
The utility model discloses a drum brake's braking single arm-drag, drum brake and motor vehicles relates to automobile brake technical field; the brake pull arm is used for connecting a pull rope, and the pull rope is of a linear structure with the end diameter larger than the diameter of the body; the lower end of the brake pull arm is provided with a pull rope mounting hook, and the pull rope mounting hook is provided with two arms and a pull rope mounting opening between the two arms; the brake pull arm is characterized by further comprising a pull rope anti-falling structure, the pull rope anti-falling structure is located at the pull rope mounting opening, and two ends of the pull rope anti-falling structure are correspondingly connected with the two arms of the pull rope mounting hook; the distance between the pull rope anti-falling structure and the bending part of the pull rope mounting hook is smaller than the diameter of the end part of the pull rope and not smaller than the diameter of the body of the pull rope. The utility model discloses a drum brake of braking single arm-drag and applied this braking single arm-drag can effectually prevent that the stay cord from droing, guarantees the safety that the vehicle travel after the stay cord installation.
Description
Technical Field
The utility model relates to an automotive brake technical field especially relates to a drum brake's braking single arm-drag, drum brake and motor vehicles.
Background
The automobile has become a necessity in life, and the development of science and technology enables the automobile to have the characteristic of diversification; whatever the automobile, the automobile is provided with a brake system, and the brake system is an important part related to the running safety of the automobile; the general automobile has drum brake, which is realized by pressing brake block on brake wheel. Drum brakes are early designs of brake systems, and the design of the brake drum is already used on a carriage in 1902 years, and the brake drum is not started to be widely applied in the automobile industry until about 1920 years. The main stream of the drum brake is of an inward-expanding type, and brake blocks (namely brake shoes) of the drum brake are positioned on the inner side of a brake wheel, and are expanded outwards to rub the inner side of the brake wheel during braking, so that the purpose of braking is achieved.
The general drum brake needs to connect an external force application component and a brake pull arm in the brake through a pull rope, and the connection reliability between the brake pull arm and the pull rope directly influences the brake safety of the drum brake; in the prior art, the bottom of the brake pull arm is provided with an unclosed hook, the pull rope is directly hung on the hook, and the hook is not in a closed state, so that the pull rope has a falling risk, and once the pull rope falls off, the vehicle can not be braked to influence the driving safety of the vehicle.
SUMMERY OF THE UTILITY MODEL
A first object of the present invention is to provide a brake drag arm of a drum brake having a pull cord prevented from coming off; the utility model discloses a first purpose is realized through following technical scheme:
a brake pull arm of a drum brake is used for connecting a pull rope, and the pull rope is of a linear structure with the end diameter larger than the diameter of a body; the lower end of the brake pull arm is provided with a pull rope mounting hook, and the pull rope mounting hook is provided with two arms and a pull rope mounting opening between the two arms;
the brake pull arm is characterized by further comprising a pull rope anti-falling structure, the pull rope anti-falling structure is located at the pull rope mounting opening, and two ends of the pull rope anti-falling structure are correspondingly connected with the two arms of the pull rope mounting hook; the distance between the pull rope anti-falling structure and the bending part of the pull rope mounting hook is smaller than the diameter of the end part of the pull rope and not smaller than the diameter of the body of the pull rope.
Specifically, the pull rope anti-falling structure is a lock pin arranged between two arms of the pull rope mounting hook, and the lock pin is fixedly connected with the pull rope mounting hook.
The utility model discloses a second purpose aims at providing a drum brake, and this uses neotype second purpose to realize through following technical scheme:
a drum brake includes a brake shoe having a friction pad on an outer side thereof; the brake device is characterized by further comprising a brake pull arm arranged on the brake shoe, wherein the brake pull arm is the brake pull arm adopting the technical scheme of the first purpose.
Preferably, the friction block is provided with a drain groove.
The third objective of the present invention is to provide a motor vehicle, which uses the third objective of the present invention to realize through the following technical solution:
a motor vehicle comprising a body structure and a powertrain, characterized in that it also comprises at least one drum brake according to the solution of the third object.
The utility model has the advantages of:
the utility model discloses a drum brake of braking single arm-drag and applied this braking single arm-drag can effectually prevent that the stay cord from droing, guarantees the safety that the vehicle travel after the stay cord installation.
Drawings
Fig. 1 is a schematic partial structural view of a drum brake according to an embodiment of the present invention;
fig. 2 is a side view of the embodiment of the present invention providing a lock pin mounted on a pull cord mounting hook.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
With reference to fig. 1 and 2, the present embodiment provides a drum brake, which includes a brake shoe 1, a brake pulling arm 2 mounted on the brake shoe 1, and a friction block 3 provided on the outer side of the brake shoe 1; the brake pull arm 2 is used for connecting a pull rope 5, and the pull rope 5 is a linear structure with the end diameter larger than the diameter of the body; the lower end of the brake pull arm 2 is provided with a pull rope mounting hook 6, the pull rope mounting hook 6 is provided with two arms and a pull rope mounting opening 7 between the two arms, and the pull rope mounting hook 6 is arranged into an unclosed hook for mounting the pull rope 5; braking single arm 2 still includes stay cord anti-drop structure, stay cord anti-drop structure is located stay cord installing opening 7 department, stay cord anti-drop structure's both ends with two arms of stay cord installation hook correspond and are connected in order to realize stay cord installing opening 7's closure.
The distance between the pull rope anti-falling structure and the bending part of the pull rope mounting hook 6 is smaller than the diameter of the end part of the pull rope 5 and not smaller than the diameter of the body of the pull rope 5, so that the pull rope 5 can be clamped at the position of the pull rope mounting hook 6 after being mounted and cannot fall off, and a certain amount of movement can be realized in the pull rope mounting hook 6; the distance between the cord release preventing structure and the bent portion of the cord mounting hook 6 described here means the distance between the cord release preventing structure and the inside of the bent portion of the cord mounting hook 6. In this embodiment, the pull rope falling prevention structure is a lock pin 4, and the lock pin 4 is a pin.
The assembly method of the pull rope of the drum brake is as follows: before the pull rope 5 is installed, the lock pin 4 is not installed, and the pull rope installation opening 7 is not closed; a body part of a pull rope 5 is arranged in a pull rope mounting hook 6 of the brake pull arm 2, and then a lock pin 4 is arranged to close a pull rope mounting opening 7, so that a space with closed periphery is formed at the position of the pull rope mounting hook 6, and the pull rope 5 is positioned in the closed space; after the lock pin 4 is attached, the pull rope 5 can move in the closed space and the pull rope 5 is prevented from falling off the rope attachment hook 6 by being restricted by the end portion of the pull rope.
When the drum brake is needed to brake, the pull rope 5 is pulled under stress, so that the brake pull arm 2 is pulled to work, and the brake pull arm 2 drives the friction block 3 of the brake shoe 1 to be close to a brake drum (not shown), so that the wheel is parked. The specific structure of the drum brake further includes structures such as tension springs, and these structures are the same as or similar to the structures of the prior art and the working principle thereof, and therefore, the detailed description thereof is omitted here.
Preferably, the friction block 3 is further provided with a drain groove, so that the drainage performance of the friction block is improved, and impurities such as gravel, water and dust can be effectively removed, thereby improving the braking performance of the drum brake.
The utility model discloses still disclose a motor vehicle, including major structure and driving system, still include at least one above-mentioned drum brake.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like without creativity within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (5)
1. A brake pull arm of a drum brake is used for connecting a pull rope, and the pull rope is of a linear structure with the end diameter larger than the diameter of a body; the lower end of the brake pull arm is provided with a pull rope mounting hook, and the pull rope mounting hook is provided with two arms and a pull rope mounting opening between the two arms;
the brake pull arm is characterized by further comprising a pull rope anti-falling structure, the pull rope anti-falling structure is located at the pull rope mounting opening, and two ends of the pull rope anti-falling structure are correspondingly connected with the two arms of the pull rope mounting hook; the distance between the pull rope anti-falling structure and the bending part of the pull rope mounting hook is smaller than the diameter of the end part of the pull rope and not smaller than the diameter of the body of the pull rope.
2. The brake arm according to claim 1, wherein the pull-cord separation preventing structure is a lock pin installed between the two arms of the pull-cord mounting hook, and the lock pin is fixedly connected to the pull-cord mounting hook.
3. A drum brake includes a brake shoe having a friction pad on an outer side thereof; the brake pull arm is characterized by further comprising a brake pull arm arranged on the brake shoe, wherein the brake pull arm adopts the brake pull arm in claim 1 or 2.
4. A drum brake according to claim 3, characterised in that the friction blocks are provided with a drain groove.
5. A motor vehicle comprising a body structure and a powertrain, characterized in that it further comprises at least one drum brake according to claim 3 or 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020289029.7U CN211901395U (en) | 2020-03-10 | 2020-03-10 | Drum brake's braking arm, drum brake and motor vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020289029.7U CN211901395U (en) | 2020-03-10 | 2020-03-10 | Drum brake's braking arm, drum brake and motor vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211901395U true CN211901395U (en) | 2020-11-10 |
Family
ID=73322652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020289029.7U Active CN211901395U (en) | 2020-03-10 | 2020-03-10 | Drum brake's braking arm, drum brake and motor vehicles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211901395U (en) |
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2020
- 2020-03-10 CN CN202020289029.7U patent/CN211901395U/en active Active
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