CN213292606U - Hydraulic drum brake device - Google Patents
Hydraulic drum brake device Download PDFInfo
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- CN213292606U CN213292606U CN202021815888.1U CN202021815888U CN213292606U CN 213292606 U CN213292606 U CN 213292606U CN 202021815888 U CN202021815888 U CN 202021815888U CN 213292606 U CN213292606 U CN 213292606U
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- brake
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- brake shoe
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- hydraulic block
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Abstract
The utility model discloses a hydraulic drum brake device, which comprises a chassis, two brake shoes, a reset spring, a hydraulic block and a pressure lever; the hydraulic block is fixedly arranged on the chassis, the driving end of the hydraulic block is positioned between the opening and closing control ends of the two brake shoes, and the hydraulic block is also provided with an input control piston which is positioned outside the chassis; when the brake handle at the handle end pulls the steel wire of the brake line, the steel wire pulls the pressure lever to press down the input control piston of the hydraulic block, the oil pressure in the hydraulic block is increased, the contacts of the two action pistons extend outwards, and then the two brake shoes are driven to expand, so that the brake is realized.
Description
Technical Field
The utility model belongs to the technical field of electric bicycle, motorcycle, tricycle, electric tricycle braking, concretely relates to fluid pressure type drum device of stopping.
Background
Referring to fig. 1, a conventional drum brake device for an electric bicycle or a bicycle generally includes a chassis a, two brake shoes b, a return spring e and a pull rod c, wherein the two brake shoes are relatively mounted on the chassis through positioning pins, the return spring is connected between the two brake shoes to provide a closing restoring force, a plate-shaped toggle button d is disposed between actuating ends of the two brake shoes and connected to a head end of the pull rod, and when a brake cable pulls a tail end of the pull rod, the pull rod drives the toggle button at the head end to rotate, and the toggle button drives the two brake shoes to expand and separate, thereby implementing a braking action. According to the drum brake device, the plate-shaped shifting knob is adopted to drive the two brake shoes simultaneously, so that a large initial force is required to drive the shifting knob to rotate, and the brake hand feeling of a user is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a fluid pressure type drum device of stopping, be applicable to electric bicycle, motorcycle, tricycle, electric tricycle.
The utility model discloses a realize through following technical scheme:
a hydraulic drum brake device comprises a chassis, a first brake shoe, a second brake shoe, a return spring, a hydraulic block and a pressure lever;
the first brake shoe and the second brake shoe are oppositely arranged, one end of the first brake shoe and one end of the second brake shoe are arranged on the chassis through a limiting pin, a return spring is arranged between the first brake shoe and the second brake shoe, and closing restoring force is provided for the two brake shoes through the return spring;
the hydraulic block is fixedly arranged on the chassis, the driving end of the hydraulic block is positioned between the opening and closing control ends of the first brake shoe and the second brake shoe, and the hydraulic block is also provided with an input control piston which is positioned on the outer side of the chassis;
the pressure lever is used for triggering the input control piston on the hydraulic block under the pulling of the brake cable, the inner end of the pressure lever is hinged on the hydraulic block or the chassis, and the outer end of the pressure lever is provided with an installation part used for connecting the brake cable.
In the technical scheme, the driving end of the hydraulic block is provided with two outwards symmetrically arranged action piston contacts, one action piston contact acts on the inner side of the opening and closing control end of the first brake shoe, and the other action piston contact acts on the inner side of the opening and closing control end of the second brake shoe.
In the above technical scheme, the pressing rod is in the shape of a long rod, can be a straight rod, and can also be a long rod with a certain radian.
In the technical scheme, the driving end of the hydraulic block is positioned on the inner side of the chassis, and the chassis is provided with the corresponding through hole to adapt to the installation of the hydraulic block.
In the technical scheme, the number of the return springs is two, one of the return springs is arranged on one side close to the limiting pin, and the other return spring is arranged on one side close to the opening and closing control end of the brake shoe.
In the above-described aspect, friction linings are provided on the outer side of the first brake shoe and the outer side of the second brake shoe, respectively.
In the technical scheme, the side part of the chassis is provided with a support arm, the support arm is provided with a bolt mounting hole, and the support arm is provided with a brake cable positioning mounting hole.
In the technical scheme, during use, a steel wire brake type braking mode is adopted, a steel wire terminal of a brake wire is fixedly installed on an installation part at the outer end of a pressure rod, a sheath of the brake wire is fixed on a brake wire positioning installation hole in a support arm, when a brake handle at a handlebar end pulls the steel wire of the brake wire, the steel wire pulls the pressure rod to press down an input control piston of a hydraulic block, oil pressure in the hydraulic block is increased, contacts of two action pistons extend outwards, and then a first brake shoe and a second brake shoe are driven to expand to realize braking.
The utility model discloses an advantage and beneficial effect do:
1. the utility model discloses the simple installation compares with the dish is stopped, and is low to the installation accuracy requirement.
2. Compare with traditional brake cable formula drum device of stopping, the utility model discloses it is more laborsaving, braking effect is good, controls and feels.
3. Compare with traditional hydraulic brake device, the utility model discloses with low costs, the maintenance of being convenient for.
Drawings
Fig. 1 is a schematic view of a structure of a related art drum brake device.
Fig. 2 is a front view of the hydraulic drum brake device of the present invention.
Fig. 3 is a back view of the hydraulic drum brake device of the present invention.
Fig. 4 is a use state diagram of the hydraulic drum brake device of the present invention.
Fig. 5 is a schematic structural view of a hydraulic drum brake device according to a second embodiment of the present invention.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
In order to make the technical field person understand the solution of the present invention better, the technical solution of the present invention is further described below with reference to the specific embodiments.
Example one
Referring to fig. 2-4, a hydraulic drum brake device comprises a chassis 1, a first brake shoe 2, a second brake shoe 3, a return spring 4, a hydraulic block 5 and a pressure lever 6.
The first brake shoe 2 and the second brake shoe 3 are arranged oppositely, one end of the first brake shoe and one end of the second brake shoe are installed on the chassis 1 through a limiting pin 7, a return spring 4 is arranged between the first brake shoe and the second brake shoe (namely, two ends of the return spring 4 are respectively connected with the first brake shoe 2 and the second brake shoe 3), and closing restoring force is provided for the two brake shoes through the return spring.
The hydraulic block 5 is fixedly arranged on the chassis 1, the driving end 5-1 of the hydraulic block 5 is positioned on the inner side of the chassis 1 and positioned between the opening and closing control ends of the first brake shoe 2 and the second brake shoe 3, and the driving end 5-1 of the hydraulic block 5 is provided with two action piston contacts 5-11 which are symmetrically arranged outwards, namely, one action piston contact acts on the inner side of the opening and closing control end of the first brake shoe 2, and the other action piston contact acts on the inner side of the opening and closing control end of the second brake shoe 3; the hydraulic block 5 is also provided with an input control piston 5-2 which is positioned outside the chassis 1, when the input control piston 5-2 is triggered (pressed downwards), the oil pressure in the hydraulic block 5 is increased, and two action piston contacts 5-11 extend outwards, so that the first brake shoe 2 and the second brake shoe 3 are driven to expand, and the brake is realized.
The brake cable comprises a brake cable, a pressure rod 6, a hydraulic block 5, an input control piston and a brake cable, wherein the pressure rod 6 is used for triggering (pressing down) the input control piston on the hydraulic block 5 under the pulling of the brake cable, specifically, the pressure rod 6 is in the shape of a long rod, can be a straight rod or a long rod with a certain radian, the inner end of the pressure rod 6 is hinged and installed on the hydraulic block 5, an installation part 6-1 used for connecting the brake cable is arranged at the outer end of the pressure rod 6, and the outer end of the pressure rod 6 is pulled through a steel wire of the brake cable to enable the pressure rod 6 to.
Furthermore, as the driving end 5-1 of the hydraulic block is located on the inner side of the chassis 1, and the input control piston 5-2 of the hydraulic block is located on the outer side of the chassis 1, a corresponding through hole needs to be arranged on the chassis 1 to adapt to the installation of the hydraulic block.
Furthermore, the number of the return springs 4 is two, one of the return springs is arranged on one side close to the limiting pin 7, and the other return spring is arranged on one side close to the opening and closing control end of the brake shoe.
Further, friction linings are respectively arranged on the outer side of the first brake shoe and the outer side of the second brake shoe.
Furthermore, a support arm 1-1 is arranged on the side part of the chassis 1, a bolt mounting hole 1-11 is arranged on the support arm and used for being fixed with the frame, and a brake cable positioning mounting hole 1-12 is also arranged on the support arm.
When the brake is used, referring to the attached figure 4, a steel wire brake type braking mode is adopted, the steel wire terminal of a brake wire is fixedly arranged on the mounting part 6-1 at the outer end of the pressure rod, the outer skin m1 of the brake wire is fixed on the brake wire positioning mounting hole 1-12 on the support arm, when the brake handle at the handle end pulls the steel wire m2 of the brake wire, the steel wire m2 pulls the pressure rod 6 to press the input control piston 5-2 of the hydraulic block 5 downwards, the oil pressure in the hydraulic block 5 is increased, and the two action piston contacts 5-11 extend outwards, so that the first brake shoe 2 and the second brake shoe 3 are driven to expand and open, and the brake shoe is braked.
Example two
The difference between the present embodiment and the first embodiment is that, referring to fig. 5, the inner end of the pressure lever 6 may also be hinged to the chassis 1, and the steel wire of the brake cable pulls the pressure lever 6 to press the hydraulic block 5 to input the control piston 5-2, so as to implement braking.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The invention has been described above by way of example, and it should be noted that any simple variants, modifications or other equivalent substitutions by a person skilled in the art without spending creative effort may fall within the scope of protection of the present invention without departing from the core of the present invention.
Claims (10)
1. The utility model provides a hydraulic pressure type drum device of stopping which characterized in that: the brake comprises a chassis, a first brake shoe, a second brake shoe, a return spring, a hydraulic block and a pressure lever;
the first brake shoe and the second brake shoe are oppositely arranged, one end of the first brake shoe and one end of the second brake shoe are arranged on the chassis through a limiting pin, a return spring is arranged between the first brake shoe and the second brake shoe, and closing restoring force is provided for the two brake shoes through the return spring;
the hydraulic block is fixedly arranged on the chassis, the driving end of the hydraulic block is positioned between the opening and closing control ends of the first brake shoe and the second brake shoe, and the hydraulic block is also provided with an input control piston which is positioned on the outer side of the chassis;
the pressure lever is used for triggering the input control piston on the hydraulic block under the pulling of the brake cable, the inner end of the pressure lever is hinged on the hydraulic block or the chassis, and the outer end of the pressure lever is provided with an installation part used for connecting the brake cable.
2. The hydraulic drum brake device of claim 1, wherein: the driving end of the hydraulic block is provided with two actuating piston contacts which are symmetrically arranged outwards, wherein one actuating piston contact acts on the inner side of the opening and closing control end of the first brake shoe, and the other actuating piston contact acts on the inner side of the opening and closing control end of the second brake shoe.
3. The hydraulic drum brake device of claim 1, wherein: the compression bar is in a long rod shape.
4. The hydraulic drum brake device of claim 1, wherein: the driving end of the hydraulic block is positioned at the inner side of the chassis, and the chassis is provided with a corresponding through hole to adapt to the installation of the hydraulic block.
5. The hydraulic drum brake device of claim 1, wherein: the number of the return springs is two, one of the return springs is arranged on one side close to the limiting pin, and the other return spring is arranged on one side close to the opening and closing control end of the brake shoe.
6. The hydraulic drum brake device of claim 1, wherein: a friction lining is arranged on the outer side of the first brake shoe.
7. The hydraulic drum brake device of claim 1, wherein: and a friction lining is arranged on the outer side of the second brake shoe.
8. The hydraulic drum brake device of claim 1, wherein: the side part of the chassis is provided with a support arm, and the support arm is provided with a bolt mounting hole.
9. The hydraulic drum brake device of claim 1, wherein: the side part of the chassis is provided with a support arm, and the support arm is provided with a brake cable positioning and mounting hole.
10. The hydraulic drum brake device of claim 9, wherein: and the steel wire terminal of the brake cable is fixedly arranged on the mounting part at the outer end of the pressure rod, and the outer skin of the brake cable is fixed on the brake cable positioning mounting hole on the support arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021815888.1U CN213292606U (en) | 2020-08-26 | 2020-08-26 | Hydraulic drum brake device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021815888.1U CN213292606U (en) | 2020-08-26 | 2020-08-26 | Hydraulic drum brake device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213292606U true CN213292606U (en) | 2021-05-28 |
Family
ID=76027425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021815888.1U Active CN213292606U (en) | 2020-08-26 | 2020-08-26 | Hydraulic drum brake device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213292606U (en) |
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2020
- 2020-08-26 CN CN202021815888.1U patent/CN213292606U/en active Active
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