CN104455090A - Drum brake and car - Google Patents
Drum brake and car Download PDFInfo
- Publication number
- CN104455090A CN104455090A CN201410738244.XA CN201410738244A CN104455090A CN 104455090 A CN104455090 A CN 104455090A CN 201410738244 A CN201410738244 A CN 201410738244A CN 104455090 A CN104455090 A CN 104455090A
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- Prior art keywords
- brake
- drum
- drive portion
- tie
- wire drawing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention discloses a drum brake and a car. The drum brake comprises a substrate, a brake drum arranged on the substrate, and two brake shoes oppositely arranged inside the brake drum, and further comprises a pull plate and a push rod, wherein a pull wire connecting part, a rotational connecting part and a first driving part are sequentially arranged on the pull plate; the pull wire connecting part and the rotational connecting part are positioned on the two sides of the substrate respectively; one end of the push rod is rotationally connected with the pull plate through the rotational connecting part; a second driving part is arranged at the other end of the push rod; when the pull wire connecting part is pulled to enable the pull plate to move in a parking process, the first driving part and the second driving part rotate to leave from each other; a through hole is formed in each of the opposite positions of the two brake shoes; the first driving part and the second driving part are positioned inside different through holes. According to the drum brake provided by the invention, through the pull rod and the push rod, the pull wire penetrating through the substrate and positioned inside the brake drum in the prior art is substituted, so that multiple folding of the pull wire is naturally avoided.
Description
Technical field
The present invention relates to automotive engineering, be specifically related to a kind of drum brake and automobile.
Background technique
Drum brake is conventional automotive brake, and it is pressed to inside brake drum by the friction plate of driving mechanism by brake shoe, thus produces braking force, and brake wheel makes car deceleration or parking, so to ensure the safety of driving a vehicle.
Fig. 1 is the plan view of drum brake in prior art, Fig. 2 is the plan view of drum brake in prior art, as shown in Figure 1-2, drum brake of the prior art comprises substrate 11, be arranged at the brake drum (not shown) on substrate 11, two brake shoes be oppositely arranged in brake drum and drive link 13, two brake shoes are respectively neck hoof 15 and from hoof 12, one end of neck hoof 15 is connected with wire drawing 14, the other end of neck hoof 15 is braking part 151, one end of drive link 13 is rotationally connected neck hoof 15 between wire drawing 14 and braking part 151, the other end of drive link 13 connects from hoof 12, the wire drawing 14 of automobile is connected with one end of neck hoof 15 with other component of drum brake through substrate 11.During work, wire drawing 14 pulls neck hoof 15 to make to move to stick brake drum outside its braking part 151 and brakes, after braking part 151 cannot continue outer moving because of the prevention of brake drum, neck hoof 15 is rotated further to drive drive link 13 to drive and moves from hoof 12, until also stick brake drum from hoof 12 to realize braking, thus complete the braking of two brake shoes.
The deficiencies in the prior art part is, as shown in Figure 1-2, need bending when wire drawing 14 penetrates in the brake drum of opposite side from the side of substrate 11, because the stop of component also impossible straight line when wire drawing 14 is arranged in brake drum, need when wire drawing 14 is connected with drum brake thus repeatedly to bend, the repeatedly bending parking efficiency reducing wire drawing 14 on the one hand, causes its easily wearing and tearing and fracture on the other hand.
Prior art:
11, substrate; 12, from hoof; 13, drive link; 14, wire drawing; 15, hoof is led; 151, braking part.
The present invention:
21, substrate; 22, wire drawing fixed block; 23, brake shoe; 24, arm-tie; 241, wire drawing joint; 242, rotating junction; 243, the first drive portion; 244, clinch; 25, push rod; 251, the second drive portion; 252, abutting part; 253, kink; 26, wire drawing; 27, through hole; 28, elastic component.
Summary of the invention
The object of this invention is to provide a kind of drum brake and automobile, need technical problem repeatedly bending in drum brake to solve wire drawing in prior art.
To achieve these goals, the invention provides following technological scheme:
A kind of drum brake, comprises substrate, is arranged at two brake shoes be oppositely arranged in brake drum on substrate and brake drum, also comprise,
Arm-tie, described arm-tie is disposed with wire drawing joint, rotating junction and the first drive portion, and described wire drawing joint and described rotating junction separate from the both sides of described substrate;
Push rod, one end of described push rod is rotationally connected by described rotating junction and described arm-tie, the other end of described push rod is provided with the second drive portion, and when described parking wire drawing joint under tension makes described arm-tie move, described first drive portion leaves mutually with described second drive portion;
On two described brake shoes, relative position respectively offers a through hole, and described first drive portion and described second drive portion are each positioned in a described through hole.
Above-mentioned drum brake, described arm-tie is also provided with the clinch be connected with described wire drawing joint, described clinch and described substrate overlap or have a gap.
Above-mentioned drum brake, also comprises an elastic component, and the two ends of described elastic component connect described clinch and described substrate respectively.
Above-mentioned drum brake, described elastic component is spring, and described spring is buckled on described clinch by drag hook.
Above-mentioned drum brake, the arranged direction of described elastic component is consistent in the arranged direction at described wire drawing joint place with the wire drawing of automobile.
Above-mentioned drum brake, described second drive portion and described arm-tie in the same plane.
Above-mentioned drum brake, one end and the described brake shoe of described push rod abut against.
A kind of automobile, comprise break, described break is above-mentioned drum brake.
In technique scheme, drum brake provided by the invention, be provided with arm-tie and push rod, the two ends of arm-tie are respectively in the both sides of substrate, after one end of pull bar receives the pulling force of wire drawing, make the other end of pull bar and push rod by leaving the driving realized brake shoe, and realize the braking to brake drum by brake shoe.So, be instead of in prior art the wire drawing of passing substrate and being positioned at inside brake drum by pull bar and push rod, naturally also just avoid repeatedly bending of this part wire drawing.
Because above-mentioned drum brake has above-mentioned technique effect, the automobile comprising this drum brake also should have corresponding technique effect.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the present invention, for those of ordinary skill in the art, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the plan view of drum brake in prior art;
Fig. 2 is the plan view of drum brake in prior art;
The structural representation that Fig. 3 is the arm-tie described in the embodiment of the present invention and push rod;
The structural representation of the drum brake that Fig. 4 provides for the embodiment of the present invention;
The using state figure of the drum brake that Fig. 5 provides for the embodiment of the present invention;
The sectional view of the drum brake that Fig. 6 provides for the embodiment of the present invention;
The structural representation of the arm-tie that Fig. 7 provides for the embodiment of the present invention, push rod and brake shoe.
Description of reference numerals:
Embodiment
In order to make those skilled in the art understand technological scheme of the present invention better, below in conjunction with accompanying drawing, the present invention is further detailed.
As shown in fig. 3 to 7, a kind of drum brake that the embodiment of the present invention provides, comprise substrate 21, be arranged at two brake shoes 23 be oppositely arranged in brake drum (not shown) on substrate 21 and brake drum, also comprise arm-tie 24 and push rod 25, arm-tie 24 is disposed with wire drawing joint 241, rotating junction 242 and the first drive portion 243, wire drawing joint 241 and rotating junction 242 separate from the both sides of substrate 21; One end of push rod 25 is rotationally connected by rotating junction 242 and arm-tie 24, the other end of push rod 25 is provided with the second drive portion 251, when parking wire drawing joint 241 under tension makes arm-tie 24 move, the first drive portion 243 leaves mutually with the second drive portion 251; On two brake shoes 23, relative position respectively offers a through hole 27, first drive portion 243 and the second drive portion 251 is each positioned in a through hole 27.
For stating conveniently, side title substrate 21 being provided with brake drum is herein the inner side of substrate 21, and the opposite side relative with inner side is outside; Left and right sides herein describes with specifically shown in the drawings for benchmark, but not the other restriction to structure.
Concrete, arm-tie 24 runs through substrate 21, one end of arm-tie 24 is positioned at the outside of substrate 21, this end of arm-tie 24 is provided with wire drawing joint 241, wire drawing joint 241 is for connecting braking wire drawing 26, wire drawing joint 241 can be fixed hole or stationary axle, also can with reference to relevant wire drawing fixed structure of the prior art.The other end of arm-tie 24 is positioned at the inner side of substrate 21, this end of arm-tie 24 is provided with rotating junction 242 and the first drive portion 243, wherein, rotating junction 242 on arm-tie 24 between wire drawing joint 241 and the first drive portion 243, it is for being rotationally connected with one end of push rod 25, and rotating junction 242 can be rotatingshaft or the hole for installing rotatingshaft; First drive portion 243 for contacting with brake shoe 23 and applying pressure to drive brake shoe 23 to it in arm-tie 24 movement process.One end of push rod 25 is rotationally connected by rotating junction 242 and arm-tie 24, and the other end is the second drive portion 251.So, as shown in Figures 3 and 4, wire drawing 26 is fixed on substrate 21 by wire drawing fixed block 22, wire drawing 26 applies a pulling force left to the wire drawing joint 241 of arm-tie 24, along with arm-tie 24 and push rod 25 with rotating junction 242 for axle relatively rotates, the first drive portion 243 will leave mutually with the second drive portion 251.
In the present embodiment, as shown in Figure 6, two brake shoes 23 are oppositely arranged, a side on each braking brake drum, two brake shoes 23 are respectively provided with a through hole 27, two through holes 27 are oppositely arranged, first drive portion 243 and the second drive portion 251 are each positioned in one of them through hole 27, in normal state, there is between brake shoe 23 and brake drum a gap, as mentioned above, when arm-tie 24 is subject to the pulling force braking wire drawing 26, first drive portion 243 leaves mutually with the second drive portion 251, because the first drive portion 243 and the second drive portion 251 lay respectively in the through hole 27 of two brake shoes 23, drive two brake shoes 23 move towards contrary direction by the first drive portion 243 and leaving of the second drive portion 251, so, brake shoe 23 will stick brake drum to brake.
In the present embodiment, in braking process, arm-tie 24 and the actual compound motion being movement and rotating carried out of push rod 25, because the difference of the difference of arm-tie 24, push rod 25 size and wire drawing 26 pulling force size, likely the first drive portion 243 first drives brake shoe 23, also first brake shoe 23 may be driven by the second drive portion 251, but ensure leaving size and can matching with the gap size between brake shoe 23 and brake drum of the second drive portion 251 and the first drive portion 243 when only need design, both leave and must ensure that two brake shoes 23 all stick brake drum.
The drum brake that the present embodiment provides, be provided with arm-tie 24 and push rod 25, the two ends of arm-tie 24 are respectively in the both sides of substrate 21, after one end of pull bar receives the pulling force of wire drawing 26, make the driving that the other end of pull bar and push rod 25 realize brake shoe 23, and finally realize the braking of brake shoe 23 pairs of brake drums.So, be instead of in prior art the wire drawing 26 of passing substrate 21 and being positioned at inside brake drum part by pull bar and push rod 25, naturally also just avoid repeatedly bending of this part wire drawing 26.
Arm-tie 24 in the present embodiment is preferably sheet material, and obviously, also can be rod member, push rod 25 be preferably rod member, also can be sheet material.
In the present embodiment, first drive portion 243 and the second drive portion 251 are preferably Spielpassung with the through hole 27 on brake shoe 23, so that the installation of arm-tie 24 and push rod 25, but simultaneously, first drive portion 243 and the second drive portion 251 are preferably connected to side nearest apart from brake drum on through hole 27 hole wall, namely the first drive portion 243 and the second drive portion 251 are installed with through hole 27 bias, as in figure 6, on the right side of the first drive portion 243 and right side brake shoe 23, the right side hole wall of through hole 27 abuts against, on the left side of the second drive portion 251 and left hand brake hoof 23, the left side hole wall of through hole 27 abuts against, the stroke of braking wire drawing 26 is limited, two drive portions and through hole 27 hole wall abut against and ensure once wire drawing 26 is braked, drive portion can drive brake shoe 23 immediately, guarantee the efficient of retardation efficiency.
In the present embodiment, as shown in Figures 3 and 4, further, arm-tie 24 is also provided with the clinch 244 be connected with wire drawing joint 241, clinch 244 and substrate 21 overlap or have a gap.The effect of clinch 244 is, when arm-tie 24 is subject to wire drawing 26 pulling force, clinch 244 can snap on substrate 21, thus can to the generation resistance that moves down and move to left of arm-tie 24, arm-tie 24 is first rotated, the first drive portion 243 is made first to drive right side brake shoe 23, when the top brake drum of right side brake shoe 23 cannot continue to move right, arm-tie 24 continues under tension and just the second drive portion 251 can be driven to drive right side brake shoe 23 to left, the effect of clinch 244 is to make the movement process of arm-tie 24 and push rod 25 be able to clearly, reduce uncertain.
As most preferred, very close to each other between clinch 244 and substrate 21, be namely overlapped on substrate 21, so in motor racing process, reduce clinch 244 clashes into substrate 21 probability because of vibrations, keep the low noise in driving conditions.
In the present embodiment, further, as shown in Figure 4, also comprise an elastic component 28, the two ends of elastic component 28 connect clinch 244 and substrate 21 respectively.Arm-tie 24 and push rod 25 is helped to reset after the effect of elastic component 28 is end of braking.As preferably, elastic component 28 is spring, and spring is buckled on clinch 244 by drag hook, perforate on clinch 244, and spring, is so convenient to install by pull bar hook in this hole.
As preferred, the arranged direction of elastic component 28 is consistent in the arranged direction at wire drawing joint 241 place with the wire drawing 26 of automobile.The elastic force of maximum using elastic component 28 like this.
In the present embodiment, preferably, the second drive portion 251 is in the same plane with arm-tie 24.As shown in Figure 3, by a kink 253, push rod 25 ensures that the second drive portion 251 is in the same plane with arm-tie 24, now, second drive portion 251 is only subject to the driving force of arm-tie 24 left-hand, ensure that the Impact direction of the second drive portion 251 and the Impact direction of the first drive portion 243 are located along the same line, the efficiency of guarantee power, and be positioned on different straight line and can produce a shearing force.
The present embodiment, preferably, as shown in Figure 6, one end of push rod 25 is abutting part 252, abutting part 252 and brake shoe 23 abut against, abut the location be convenient on the one hand when assembling, braking force can be applied to brake shoe 23 when arm-tie 24 moves, power-assisted first drive portion 243 and the second drive portion 251 on the other hand.For the right side of push rod 25 and brake shoe 23 abut against in Fig. 6, obvious, the left side of push rod 25 also can abut against with brake shoe 23.
The present embodiment also provides a kind of automobile, comprises break, and break is above-mentioned drum brake.
Because above-mentioned drum brake has above-mentioned technique effect, the automobile comprising this drum brake also should have corresponding technique effect.
Obviously, except automobile, the drum brake that the present embodiment provides also is applicable to other vehicles.
Mode above only by illustrating describes some one exemplary embodiment of the present invention, undoubtedly, for those of ordinary skill in the art, when without departing from the spirit and scope of the present invention, can revise described embodiment by various different mode.Therefore, above-mentioned accompanying drawing is illustrative with being described in essence, should not be construed as the restriction to the claims in the present invention protection domain.
Claims (8)
1. a drum brake, comprises substrate, is arranged at two brake shoes be oppositely arranged in brake drum on substrate and brake drum, it is characterized in that, also comprise,
Arm-tie, described arm-tie is disposed with wire drawing joint, rotating junction and the first drive portion, and described wire drawing joint and described rotating junction separate from the both sides of described substrate;
Push rod, one end of described push rod is rotationally connected by described rotating junction and described arm-tie, the other end of described push rod is provided with the second drive portion, and when described parking wire drawing joint under tension makes described arm-tie move, described first drive portion leaves mutually with described second drive portion;
On two described brake shoes, relative position respectively offers a through hole, and described first drive portion and described second drive portion are each positioned in a described through hole.
2. drum brake according to claim 1, is characterized in that, described arm-tie is also provided with the clinch be connected with described wire drawing joint, described clinch and described substrate overlap or have a gap.
3. drum brake according to claim 2, is characterized in that, also comprises an elastic component, and the two ends of described elastic component connect described clinch and described substrate respectively.
4. drum brake according to claim 3, is characterized in that, described elastic component is spring, and described spring is buckled on described clinch by drag hook.
5. drum brake according to claim 3, is characterized in that, the arranged direction of described elastic component is consistent in the arranged direction at described wire drawing joint place with the wire drawing of automobile.
6. the drum brake according to any one of claim 1-5, is characterized in that, described second drive portion and described arm-tie in the same plane.
7. the drum brake according to any one of claim 1-5, is characterized in that, one end and the described brake shoe of described push rod abut against.
8. an automobile, comprises break, it is characterized in that, described break is the drum brake described in any one of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410738244.XA CN104455090B (en) | 2014-12-05 | 2014-12-05 | Drum brake and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410738244.XA CN104455090B (en) | 2014-12-05 | 2014-12-05 | Drum brake and car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104455090A true CN104455090A (en) | 2015-03-25 |
| CN104455090B CN104455090B (en) | 2017-05-17 |
Family
ID=52901648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410738244.XA Active CN104455090B (en) | 2014-12-05 | 2014-12-05 | Drum brake and car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104455090B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1247245A (en) * | 1969-03-01 | 1971-09-22 | Girling Ltd | Improvements in back stops for internal shoe drum brakes and to internal shoe drum brakes incorporating such back stops |
| SU443520A3 (en) * | 1967-03-21 | 1974-09-15 | Гирлинг Лимитед (Фирма) | Drum brake |
| ES1002631U (en) * | 1986-06-06 | 1988-06-16 | Fiat Auto S.P.A. | Mechanical control device of a drum brake (Machine-translation by Google Translate, not legally binding) |
| EP0315313B1 (en) * | 1987-11-04 | 1990-09-05 | General Motors Corporation | Drum brake assembly |
| US5092428A (en) * | 1989-07-21 | 1992-03-03 | Tokico Ltd. | Drum brake |
| CN204267560U (en) * | 2014-12-05 | 2015-04-15 | 安徽江淮汽车股份有限公司 | Drum brake and automobile |
-
2014
- 2014-12-05 CN CN201410738244.XA patent/CN104455090B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU443520A3 (en) * | 1967-03-21 | 1974-09-15 | Гирлинг Лимитед (Фирма) | Drum brake |
| GB1247245A (en) * | 1969-03-01 | 1971-09-22 | Girling Ltd | Improvements in back stops for internal shoe drum brakes and to internal shoe drum brakes incorporating such back stops |
| ES1002631U (en) * | 1986-06-06 | 1988-06-16 | Fiat Auto S.P.A. | Mechanical control device of a drum brake (Machine-translation by Google Translate, not legally binding) |
| EP0315313B1 (en) * | 1987-11-04 | 1990-09-05 | General Motors Corporation | Drum brake assembly |
| US5092428A (en) * | 1989-07-21 | 1992-03-03 | Tokico Ltd. | Drum brake |
| CN204267560U (en) * | 2014-12-05 | 2015-04-15 | 安徽江淮汽车股份有限公司 | Drum brake and automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104455090B (en) | 2017-05-17 |
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| C06 | Publication | ||
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| CB02 | Change of applicant information |
Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant before: Anhui Jianghuai Automotive Co., Ltd. |
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| COR | Change of bibliographic data | ||
| GR01 | Patent grant | ||
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