CN105299095A - Two leading shoe type brake - Google Patents
Two leading shoe type brake Download PDFInfo
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- CN105299095A CN105299095A CN201510879654.0A CN201510879654A CN105299095A CN 105299095 A CN105299095 A CN 105299095A CN 201510879654 A CN201510879654 A CN 201510879654A CN 105299095 A CN105299095 A CN 105299095A
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- brake
- brake shoe
- shoe
- wheel cylinder
- friction plate
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Abstract
The invention discloses a two leading shoe type brake. The two leading shoe type brake comprises a brake wheel, wherein a first brake shoe and a second brake shoe are correspondingly arranged at two sides of the inner wall of the brake wheel; one side of the first brake shoe is hinged with an external rack while the other side of the first brake shoe is provided with a first brake wheel cylinder; the second brake shoe is positioned at one side of the first brake wheel cylinder and is hinged with the external rack; a second brake wheel cylinder is arranged at the other side of the second brake shoe; a first tension spring and a second tension spring are arranged between the first brake shoe and the second brake shoe. The two leading shoe type brake has the beneficial effects that the two brake shoes can be correspondingly matched with pistons of two different brake wheel cylinders to perform braking, so that the rotating directions of the two brake shoes in an opening state are the same as the rotating directions of the brake wheels, and as a result, the brake effect can be improved, and moreover, the abrasion uniformity of the whole brake shoes can be ensued, and the braking performance of the whole brake is stable and reliable.
Description
Technical field
The present invention relates to drum brake, be specially a kind of two leading shoe brake.
Background technique
Break is in order to produce the parts of the power hindering vehicle movement or movement tendency in braking system, automotive brake is except various retarding device, it is nearly all the friction brake utilizing the friction of fixed element and rotatable member working surface to produce braking moment, at present, the friction brake that all kinds of automobile extensively adopts is divided into drum brake and the large class of disk type braker two according to the difference of rotatable member.
Drum brake utilizes brake shoe extrude Brake drum and obtain braking force, traditional drum brake adopts a wheel cylinder to drive two brake shoes simultaneously, this driving mode can only make the sense of rotation of a brake shoe when braking identical with the direction of Brake drum, and the sense of rotation of another brake shoe is by contrary with the sense of rotation of Brake drum, when brake shoe is identical with Brake drum sense of rotation, the impacting force made between brake shoe and Brake drum increases by the tangential counter-force between brake shoe and Brake drum, and then braking force is between the two increased, when brake shoe is contrary with Brake drum sense of rotation, tangential counter-force between brake shoe and Brake drum makes braking force between the two reduce, therefore the break of this kind of structure will cause two brake shoes uneven to the braking force of Brake drum, the degree of wear of two brake shoes is also by different simultaneously, and then will the braking ability of whole break be made unstable, braking effect is poor.
Summary of the invention
The invention is intended to provide a kind of braking ability to stablize, the two leading shoe brake of good braking effect.
Two leading shoe brake in this programme, comprise Brake drum, the inwall both sides of Brake drum are respectively equipped with the first brake shoe and the second brake shoe, side and the external rack of the first brake shoe are hinged, the opposite side of the first brake shoe is provided with the first wheel cylinder, the piston of the first wheel cylinder can offset with the first brake shoe, second brake shoe side and external rack hinged, second brake shoe opposite side is provided with the second wheel cylinder, the piston of the second wheel cylinder can offset with the second brake shoe, the hinged side of first brake shoe and external rack is connected with the side that the second wheel cylinder coordinates with the second brake shoe by the first extension spring, the side that first brake shoe and the first wheel cylinder coordinate is connected with the side that the second brake shoe is hinged with external rack by the second extension spring.
The principle of this programme is: when braking, under the effect of the first extension spring and the second extension spring, first brake shoe and the second brake shoe all separate with Brake drum, Brake drum runs well, when needs are braked Brake drum, brake fluid is passed through respectively in the first wheel cylinder and the second wheel cylinder, under the effect of brake fluid, move outside the piston of the first wheel cylinder and offset with the first brake shoe, and then promotion the first brake shoe is close to Brake drum inwall, move outside the piston of the second wheel cylinder and offset with the second brake shoe, and then promotion the second brake shoe is close to Brake drum inwall, the braking to Brake drum is realized under the acting in conjunction of the first brake shoe and the second brake shoe.
The beneficial effect of this programme is: the piston of the wheel cylinder that two brake shoes in this programme are different from two respectively coordinates to be braked, sense of rotation when therefore can realize the opening of two brake shoes is identical with the sense of rotation of Brake drum, what two brake shoes can be made to fit on the brake wheel on the one hand is tighter, make braking effect better, also two brake shoe effects active force is on the brake wheel made to be balance on the other hand, and then make the stressed identical of two brake shoes, even wearing, the braking ability of whole break is reliable and stable.
Further, in order to increase the first brake shoe and the frictional force between the second brake shoe and Brake drum, improve retardation efficiency, be provided with the first friction plate between the first brake shoe and the inwall of Brake drum, the inwall cooperation place of the second brake shoe and Brake drum is provided with the second friction plate.
Further, first friction plate is connected by rivet with the first brake shoe, first friction plate offers the first groove placing rivet head, second friction plate is connected by rivet with the second brake shoe, second friction plate offers the second groove placing rivet head, because two friction plates directly contact with Brake drum inwall when braking, therefore appearance is worn and torn by two friction plates in use for some time, in order to make two friction plates energy after appearance wearing and tearing for convenience detach, two are all connected by rivet between friction plate with brake shoe, on two friction plates, offer groove simultaneously, the head of rivet is placed in groove, therefore coordinating of two friction plates and Brake drum inwall can not be had influence on.
Further, described first brake shoe and external rack are undertaken hinged by bearing pin, and described second brake shoe and external rack are undertaken hinged by bearing pin, the reliable performance of pinned connection and convenient disassembly.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Embodiment
Below by embodiment, the present invention is further detailed explanation:
Reference character in Figure of description comprises: the extension spring 6 of Brake drum 1, first wheel cylinder 2, first brake shoe 3, first friction plate 4, first groove 5, first, the extension spring 12 of bearing pin 7, second wheel cylinder 8, second brake shoe 9, second friction plate 10, second groove 11, second.
Embodiment is substantially as shown in Figure 1: two leading shoe brake, comprise Brake drum 1, Brake drum 1 is boring structure, the first wheel cylinder 2 is provided with in the upside of Brake drum 1 hollow-core construction, first wheel cylinder 2 to be fixed with external rack by the tapped hole on right side and to be connected, the first brake shoe 3 is provided with on the left of the first wheel cylinder 2, first brake shoe 3 is crescent shape structure, be plane with the first wheel cylinder 2 cooperation place on the upside of first brake shoe 3, be arc surface on the downside of first brake shoe 3, this arc surface offers pin-and-hole, first brake shoe 3 carries out hinged by the bearing pin 7 through pin-and-hole with external rack.
The first friction plate 4 is provided with on the left of the first brake shoe 3 and between Brake drum 1 inwall, first friction plate 4 is also crescent shape structure, wherein the left circles cambered surface of the first friction plate 4 right circles cambered surface and the first brake shoe 3 offsets, first friction plate 4 left circles cambered surface radius equals Brake drum 1 inwall radius of arc, first friction plate 4 also offers two the first grooves 5 and two rivet holes, also rivet hole is offered in the first brake shoe 3 relevant position, for connecting the rivet of the first friction plate 4 and the first brake shoe 3 successively through the first groove 5, rivet hole on rivet hole on first friction plate 4 and the first brake shoe 3, wherein the size of the first groove 5 is greater than the head sizes of rivet.
Hollow-core construction place on the right side of Brake drum 1 is provided with the second brake shoe 9, the upside of the second brake shoe 9 and external rack are undertaken hinged by bearing pin 7, the downside of the second brake shoe 9 coordinates with the second wheel cylinder 8, the second friction plate 10 is provided with between the second brake shoe 9 and Brake drum 1 inwall, wherein the right circles cambered surface of the second friction plate 10 left circles cambered surface and the second brake shoe 9 offsets, second friction plate 10 right circles cambered surface radius equals Brake drum 1 inwall radius of arc, second friction plate 10 also offers two the second grooves 11 and two rivet holes, also rivet hole is offered in the second brake shoe 9 relevant position, for connecting the rivet of the second friction plate 10 and the second brake shoe 9 successively through the second groove 11, rivet hole on rivet hole on second friction plate 10 and the second brake shoe 9, wherein the size of the second groove 11 is greater than the head sizes of rivet.
The first extension spring 6 and the second extension spring 12 is also provided with between the first brake shoe 3 and the second brake shoe 9, wherein the first extension spring 6 is positioned at the downside of hollow-core construction, the two ends of the first extension spring 6 are connected with the downside of the first brake shoe 3 and the second brake shoe 9 respectively, the two ends being provided with the second extension spring 12, second extension spring 12 above the first extension spring 6 are connected with the upside of the first brake shoe 3 and the second brake shoe 9 respectively.
Above-described is only embodiments of the invention, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from structure of the present invention, some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.The protection domain that this application claims should be as the criterion with the content of its claim, and the embodiment in specification etc. record the content that may be used for explaining claim.
Claims (4)
1. a two leading shoe brake, comprise Brake drum, the inwall both sides of described Brake drum are respectively equipped with the first brake shoe and the second brake shoe, it is characterized in that, side and the external rack of described first brake shoe are hinged, the opposite side of described first brake shoe is provided with the first wheel cylinder, the piston of described first wheel cylinder can offset with described first brake shoe, side and the external rack of described second brake shoe are hinged, described second brake shoe opposite side is provided with the second wheel cylinder, the piston of described second wheel cylinder can offset with described second brake shoe, the side that the described first brake shoe side hinged with external rack is coordinated with described second brake shoe and described second wheel cylinder by the first extension spring is connected, the side that described first brake shoe and described first wheel cylinder coordinate is connected with the side that described second brake shoe is hinged with external rack by the second extension spring.
2. two leading shoe brake according to claim 1, is characterized in that: be provided with the first friction plate between described first brake shoe and the inwall of described Brake drum, and the inwall cooperation place of described second brake shoe and described Brake drum is provided with the second friction plate.
3. two leading shoe brake according to claim 2, it is characterized in that: described first friction plate is connected by rivet with described first brake shoe, described first friction plate offers the first groove placing rivet head, described second friction plate is connected by rivet with described second brake shoe, described second friction plate offers the second groove placing rivet head.
4. two leading shoe brake according to claim 3, is characterized in that: described first brake shoe and external rack are undertaken hinged by bearing pin, and described second brake shoe and external rack are undertaken hinged by bearing pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510879654.0A CN105299095A (en) | 2015-12-05 | 2015-12-05 | Two leading shoe type brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510879654.0A CN105299095A (en) | 2015-12-05 | 2015-12-05 | Two leading shoe type brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105299095A true CN105299095A (en) | 2016-02-03 |
Family
ID=55196727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510879654.0A Pending CN105299095A (en) | 2015-12-05 | 2015-12-05 | Two leading shoe type brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105299095A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5422864Y2 (en) * | 1974-04-26 | 1979-08-08 | ||
| US4442924A (en) * | 1980-10-29 | 1984-04-17 | Automotive Products Limited | Internal shoe drum brakes |
| JPS6221785Y2 (en) * | 1982-05-31 | 1987-06-03 | ||
| CN87202666U (en) * | 1987-02-26 | 1987-10-14 | 杨恒山 | Wheel brake with brake shoe and brake drum being able to press wholly against each other |
| JPS63137137U (en) * | 1987-03-03 | 1988-09-09 | ||
| JPH029334U (en) * | 1988-06-30 | 1990-01-22 | ||
| JP2000274461A (en) * | 1999-03-19 | 2000-10-03 | Toyota Motor Corp | Drum brake device |
| JP2005042782A (en) * | 2003-07-25 | 2005-02-17 | Press Kogyo Co Ltd | Drum brake structure |
| CN2903554Y (en) * | 2006-03-04 | 2007-05-23 | 美驰华阳汽车制动器有限公司 | Crown drum type brake |
| CN201007330Y (en) * | 2006-04-30 | 2008-01-16 | 王有富 | Similar flexure brake |
| CN201043579Y (en) * | 2006-08-07 | 2008-04-02 | 李能 | Smooth brake of small tractor |
| CN205331275U (en) * | 2015-12-05 | 2016-06-22 | 重庆元创汽车整线集成有限公司 | Two neck shoe brake |
-
2015
- 2015-12-05 CN CN201510879654.0A patent/CN105299095A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5422864Y2 (en) * | 1974-04-26 | 1979-08-08 | ||
| US4442924A (en) * | 1980-10-29 | 1984-04-17 | Automotive Products Limited | Internal shoe drum brakes |
| JPS6221785Y2 (en) * | 1982-05-31 | 1987-06-03 | ||
| CN87202666U (en) * | 1987-02-26 | 1987-10-14 | 杨恒山 | Wheel brake with brake shoe and brake drum being able to press wholly against each other |
| JPS63137137U (en) * | 1987-03-03 | 1988-09-09 | ||
| JPH029334U (en) * | 1988-06-30 | 1990-01-22 | ||
| JP2000274461A (en) * | 1999-03-19 | 2000-10-03 | Toyota Motor Corp | Drum brake device |
| JP2005042782A (en) * | 2003-07-25 | 2005-02-17 | Press Kogyo Co Ltd | Drum brake structure |
| CN2903554Y (en) * | 2006-03-04 | 2007-05-23 | 美驰华阳汽车制动器有限公司 | Crown drum type brake |
| CN201007330Y (en) * | 2006-04-30 | 2008-01-16 | 王有富 | Similar flexure brake |
| CN201043579Y (en) * | 2006-08-07 | 2008-04-02 | 李能 | Smooth brake of small tractor |
| CN205331275U (en) * | 2015-12-05 | 2016-06-22 | 重庆元创汽车整线集成有限公司 | Two neck shoe brake |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160203 |
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| RJ01 | Rejection of invention patent application after publication |