CN206592456U - A kind of straight line separate type half opening lightweight drum brake - Google Patents
A kind of straight line separate type half opening lightweight drum brake Download PDFInfo
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- CN206592456U CN206592456U CN201720723723.3U CN201720723723U CN206592456U CN 206592456 U CN206592456 U CN 206592456U CN 201720723723 U CN201720723723 U CN 201720723723U CN 206592456 U CN206592456 U CN 206592456U
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Abstract
A kind of straight line separate type half opening lightweight drum brake, including back-plate, brake cam, friction plate and symmetrically arranged left brake-shoe and right braking hoof, return elastic component is provided between described left brake-shoe and right braking hoof dog point, described return elastic component is made up of left half spring body, middle brace rod and right half spring body, and universal switch political loyalty can be achieved；Described back-plate rotating shaft end is detachably provided with cylindrical shoe shaft by Elastic Circular pivot pin, and described left brake-shoe and right braking hoof rotating shaft end is correspondingly arranged on the circular arc opening coordinated with shoe shaft respectively up and down, and respectively with clamping above and below shoe shaft.The left brake-shoe of the utility model and right braking hoof share a shoe shaft, enormously simplify the structure of back-plate, reduce the quality of materials of back-plate, it is easily worked back-plate, brake-shoe assembles more convenient simultaneously, and later maintenance is got up becomes convenient, easily disassembled to change.
Description
Technical field
The utility model is related to automobile brake technical field, particularly belongs to a kind of straight line separate type half opening lightweight drum
Formula brake.
Background technology
Brake concerns vehicle performance and traffic safety as the important component of automobile.Automobile is generally divided into disc type brake
Two kinds of device and drum brake.For drum brake, automobile brake steps on brake pedal mainly by driver, braking
Hydraulic coupling transmission is supplied to wheel cylinder, struts brake-shoe, shoe brake rubs with brake drum, produces brake force.Work as driver
After releasing of brake pedal, the distress resolves in brake wheel cylinder, shoe brake return.
China Patent Publication No. is the A of CN 106195063 patent of invention, discloses a kind of aluminium alloy drum brake
Device assembly, and specifically disclose following technical characteristic：It is oppositely arranged including back-plate, brake cam, friction plate and two
Brake-shoe, the brake cam is rotatably arranged on back-plate, and one end of two brake-shoes passes through backing pin shaft and braking bottom
Plate is hinged, and the other end offsets with brake cam, and the brake-shoe is located at the both sides of back-plate, and is set between two brake-shoes
There are the return springs resetted for brake-shoe, the friction plate is the friction plate of not uniform thickness, and friction plate is fixed on brake-shoe
Outer surface, the brake cam be in serpentine, the back-plate and brake-shoe are that aluminium alloy is made.
Above-mentioned patent improves braking reliability to a certain extent, but still there is the defect of following four aspect：
1st, installing/dismounting is difficult, and two brake-shoes are completed and braking bottom by the cooperation of two backing pin shafts and axis hole respectively
Being hinged for plate, adds the intensity of assembling, and production efficiency is low.
2nd, the gap and fit precision of brake-shoe and backing pin between centers are easily caused the cylindrical total run-out increase of brake assembly, shadow
Ring braking effect；
3rd, the technical scheme return springs employ the back-moving spring that a kind of stainless steel is made, and the hook at its two ends is relative
It is changeless in the angle of spring body and position, adds the intensity of assembling, production efficiency is low.
4th, the weight of brake is big, causes vehicle fuel consumption high.
Therefore, it is badly in need of a kind of new drum brake technology, to solve the defect of above-mentioned brake, promotes brake
It is fast-developing.
The content of the invention
In view of the above-mentioned problems existing in the prior art, the purpose of this utility model is to provide a kind of easy to assembly, braking effect
Really good straight line separate type half opening lightweight drum brake.
To achieve the above object, the technical solution adopted in the utility model is as follows：
A kind of straight line separate type half opening lightweight drum brake, including back-plate, brake cam, friction plate and right
Claim the left brake-shoe and right braking hoof set, the brake cam is rotatably arranged on the camshaft of the dog point of back-plate,
The friction plate is arranged on the outer surface of left brake-shoe and right braking hoof, the dog point and system of the left brake-shoe and right braking hoof
Moving cam is abutted, and return elastic component, described back-plate are provided between described left brake-shoe and right braking hoof dog point
Rotating shaft end is detachably provided with cylindrical shoe shaft by Elastic Circular pivot pin, and shoe shaft, which runs through, is arranged on back-plate rotating shaft end,
And positive and negative retains sufficient protrusion surplus, described left brake-shoe and right braking hoof rotating shaft end is correspondingly arranged on and hoof respectively up and down
Bobbin coordinate circular arc opening, and respectively with clamping above and below shoe shaft, between described left brake-shoe and right braking hoof rotating shaft end
Holding spring is provided with, so as to complete to be hinged with back-plate.
As a kind of embodiment, described return elastic component is by left half spring body, middle brace rod and right half spring
Body is constituted, and described middle brace rod is provided at both ends with connecting rod flange, movable to be connected to left half spring body and right half spring body
In inner chamber, the described left half spring body other end is connected with left brake-shoe, the described right half spring body other end and right braking hoof
Connection.
As a kind of embodiment, the left brake-shoe and right braking hoof are arranged with six at inner arc surface and inner arc muscle
The reinforcement of bar first.
As a kind of embodiment, this brake also includes dust cover, and the dust cover is removably attachable to brake bottom
On plate.
As a kind of embodiment, described holding spring has two, is separately positioned on left brake-shoe and right braking hoof
Both sides up and down.
As a kind of embodiment, the back side of ring flange at the camshaft hole of described back-plate（With support conjunction plane）
If
The second oblique reinforcement is equipped with, so as to increase the linking intensity at this.
As a preferred embodiment, the friction plate is riveted on the outer of brake-shoe panel through countersunk head semi-tubular rivet
Surface.
Compared to prior art, advantageous effects of the present utility model are：
1st, left brake-shoe and right braking hoof share a shoe shaft, enormously simplify the structure of back-plate, reduce system
The quality of materials of dynamic bottom plate, is easily worked back-plate；Simultaneously brake-shoe assemble it is more convenient, make later maintenance rise
It is easily disassembled to change to become simple.
2nd, keep spring will using single shoe shaft, and by two at the back-plate of brake and brake-shoe cooperation
Left and right brake-shoe tightly coordinates with shoe shaft, it is to avoid use bushing, while also eliminating brake-shoe bushing and shoe plate in the prior art
Axle fit clearance problem, and can be close to during brake-shoe abrasion under spring tension with shoe shaft, brake is greatly lowered because of system
Dynamic hoof and cylindrical total run-out caused by the gap of shoe plate between centers are overproof, influence braking effect.
3rd, return elastic component is made up of left half spring body, middle brace rod and right half spring body, and middle brace rod
Connecting rod flange is provided at both ends with, it is movable to be connected in left half spring body and right half spring intracoelomic cavity, it is achievable universal traitorous, no
But assembly and disassembly is convenient, and produced without the arm of force, the phenomenon of dawdling that friction pair occurs when solving driving states, so as to reduce
Abrasion and heating, improve the service life of brake.
4th, shoe shaft is arranged on back-plate by Elastic Circular pivot pin, prevents shoe shaft play in the axial direction；When
When shoe shaft abrasion deformation occurs and needs replacing, shoe shaft can be directly changed, without changing whole back-plate, is changed
Easy to maintenance, cost is low.
5th, left brake-shoe and right braking hoof are arranged with six the first reinforcements at inner arc surface and inner arc muscle, brake bottom
The back side of ring flange is provided with the second oblique reinforcement at the camshaft hole of plate, ensure that braking ability safely may be used from structure
Lean on.
6th, the utility model also includes dust cover, and the dust cover is detachably mounted on back-plate, and dust cover can
Effectively dust is avoided to enter in brake, it is ensured that brake remains normal operation.
Brief description of the drawings
Fig. 1 is front view of the present utility model；
Fig. 2 is side view of the present utility model；
Fig. 3 is the structural representation of return spring of the present utility model；
Fig. 4 is the structural representation of connecting rod flange of the present utility model；
Label is schematically as follows in figure：1- back-plates；The left brake-shoes of 2-；3- countersunk head semi-tubular rivets；4- friction plates；5- hoof
Bobbin；6- keeps spring；7- brake cams；8- rollers；9- return elastic components；Half spring body of a 91- left sides；92- middle brace rods；
921- connecting rod flanges；Half spring body of the 93- right sides；10- dust covers；11- right braking hoofs；The reinforcements of 12- first；13- Elastic Circular pivot pins；
The reinforcements of 14- second.
Embodiment
The technical solution of the utility model is described in further detail below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, a kind of straight line separate type half opening lightweight drum brake, including back-plate 1, system
Moving cam 7, friction plate 4 and symmetrically arranged left brake-shoe 2 and right braking hoof 11, the brake cam 7 are rotatably arranged on braking
On the camshaft of the dog point of bottom plate 9, the friction plate 4 is riveted on left brake-shoe 2 and right braking by countersunk head semi-tubular rivet 3
The outer surface of hoof 11, the dog point of the left brake-shoe 2 and right braking hoof 11 is abutted with brake cam 7, described left brake-shoe 2
Return elastic component 9 is provided between the dog point of right braking hoof 11, the described rotating shaft end of back-plate 1 passes through Elastic Circular pivot pin 13
Cylindrical shoe shaft 5 is detachably provided with, shoe shaft 5, which runs through, is arranged on the rotating shaft end of back-plate 1, and positive and negative retains sufficient convex
Go out surplus, described left brake-shoe 2 and the rotating shaft end of right braking hoof 11 is correspondingly arranged on the circular arc coordinated with shoe shaft 5 respectively up and down
Opening, and respectively with shoe shaft clamping about 5, be provided with holding between described left brake-shoe 2 and the rotating shaft end of right braking hoof 11
Spring 6, described holding spring 6 has two, the both sides up and down of left brake-shoe 2 and right braking hoof 11 is separately positioned on, so that complete
It is hinged into back-plate 1.
As further technical scheme, the left brake-shoe 2 and right braking hoof 11 are at inner arc surface and inner arc muscle pair
Claim provided with six the first strengthening tendonss 12, so as to ensure that the safe and reliable of braking ability, especially concentrate position can also phase in stress
Local wall thickness and strengthening rib strip quantity should be added, reinforcement is triangular in shape, and intensity is higher, structure is more consolidated；This technology side
In case at the camshaft hole of back-plate ring flange the back side（With support conjunction plane）The second oblique reinforcement is additionally provided with, so that
Further increase the linking intensity at this.
As further technical scheme, the utility model also includes dust cover 10, and the dust cover 10 removably connects
It is connected on back-plate 1, it is to avoid dust is entered in brake, so that it is guaranteed that brake remains normal operation.
As shown in Figure 3 and Figure 4, described return elastic component 9 is by left half spring body 91, middle brace rod 92 and right half bullet
Spring body 93 is constituted, and described middle brace rod 92 is provided at both ends with connecting rod flange 921, movable to be connected to the left He of half spring body 91
In the right inner chamber of half spring body 93, the described left other end of half spring body 91 is connected with left brake-shoe 2, described right half spring body 93
The other end is connected with right braking hoof 11, and achievable universal traitorous, not only assembly and disassembly is convenient, and is produced without the arm of force, solves
The phenomenon of dawdling that friction pair occurs during driving states, so as to reduce abrasion and generate heat, improves the service life of brake.
During concrete operations：When brake cam 7 is rotated, involute contour equivalent by left brake-shoe 2 and right braking hoof 11
Dog point is strutted laterally, and the shoe shaft 5 of left brake-shoe 2 and right braking hoof 11 around its rotating shaft end opens laterally, left brake-shoe 2
With the brake drum friction catch in the friction plate 4 on right braking hoof 11 and wheel；Brake cam 7 is turned round after the completion of braking, left system
Dynamic hoof 2 and right braking hoof 11 inwardly shrink return under the pulling force effect of return elastic component 9, and friction plate 4 is separated with brake drum, is solved
Except braking.
It is last it is necessarily pointed out that：It the foregoing is only the utility model preferably embodiment, but this
The protection domain of utility model is not limited thereto, and any one skilled in the art discloses in the utility model
In technical scope, the change or replacement that can be readily occurred in should all be covered within protection domain of the present utility model.
Claims (8)
1. a kind of straight line separate type half opening lightweight drum brake, including back-plate, brake cam, friction plate and symmetrical
The left brake-shoe and right braking hoof set, the brake cam is rotatably arranged on the camshaft of the dog point of back-plate, institute
State the outer surface that friction plate is arranged on left brake-shoe and right braking hoof, the dog point of the left brake-shoe and right braking hoof and braking
Cam is abutted, and return elastic component is provided between described left brake-shoe and right braking hoof dog point, it is characterised in that：Described
Back-plate rotating shaft end is detachably provided with cylindrical shoe shaft, described left brake-shoe and right braking hoof by Elastic Circular pivot pin
Rotating shaft end be correspondingly arranged on respectively up and down with shoe shaft coordinate circular arc opening, and respectively with clamping above and below shoe shaft, it is described
Between left brake-shoe and right braking hoof rotating shaft end holding spring is provided with, so as to complete to be hinged with back-plate.
2. a kind of straight line separate type half opening lightweight drum brake according to claim 1, it is characterised in that：It is described
Return elastic component be made up of left half spring body, middle brace rod and right half spring body, described middle brace rod two ends are set
Connecting rod flange is equipped with, movable to be connected in left half spring body and right half spring intracoelomic cavity, the described left half spring body other end
It is connected with left brake-shoe, the described right half spring body other end is connected with right braking hoof.
3. a kind of straight line separate type half opening lightweight drum brake according to claim 1, it is characterised in that：It is described
Left brake-shoe and right braking hoof are provided with the first reinforcement at inner arc surface and inner arc muscle.
4. a kind of straight line separate type half opening lightweight drum brake according to claim 3, it is characterised in that：It is described
The first reinforcement be symmetrically arranged with six.
5. a kind of straight line separate type half opening lightweight drum brake according to claim 1, it is characterised in that：Also wrap
Dust cover is included, the dust cover is removably attachable on back-plate.
6. a kind of straight line separate type half opening lightweight drum brake according to claim 1, it is characterised in that：It is described
Holding spring have two, be separately positioned on the both sides symmetrical above and below of left brake-shoe and right braking hoof.
7. a kind of straight line separate type half opening lightweight drum brake according to claim 1, it is characterised in that：It is described
Back-plate camshaft hole at the back side of ring flange be provided with the second oblique reinforcement.
8. a kind of straight line separate type half opening lightweight drum brake according to any one of claim 1-7, it is special
Levy and be：The friction plate is riveted on the outer surface of brake-shoe panel through countersunk head semi-tubular rivet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720723723.3U CN206592456U (en) | 2017-06-21 | 2017-06-21 | A kind of straight line separate type half opening lightweight drum brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720723723.3U CN206592456U (en) | 2017-06-21 | 2017-06-21 | A kind of straight line separate type half opening lightweight drum brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206592456U true CN206592456U (en) | 2017-10-27 |
Family
ID=60121055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720723723.3U Active CN206592456U (en) | 2017-06-21 | 2017-06-21 | A kind of straight line separate type half opening lightweight drum brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206592456U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425969A (en) * | 2018-05-07 | 2018-08-21 | 浙江武义张氏包装实业有限公司 | Stretcher in tension control structure |
| CN108425970A (en) * | 2018-03-22 | 2018-08-21 | 江苏三志制动器有限公司 | A kind of reinforced hot investment casting single shaft pin brake assembly |
| CN109505892A (en) * | 2018-12-27 | 2019-03-22 | 湖北飞龙摩擦密封材料股份有限公司 | A kind of list backing pin brake |
| CN110595319A (en) * | 2019-10-25 | 2019-12-20 | 安徽江淮专用汽车有限公司 | Measuring instrument for brake shoe of middle shaft of trailer |
-
2017
- 2017-06-21 CN CN201720723723.3U patent/CN206592456U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425970A (en) * | 2018-03-22 | 2018-08-21 | 江苏三志制动器有限公司 | A kind of reinforced hot investment casting single shaft pin brake assembly |
| CN108425969A (en) * | 2018-05-07 | 2018-08-21 | 浙江武义张氏包装实业有限公司 | Stretcher in tension control structure |
| CN109505892A (en) * | 2018-12-27 | 2019-03-22 | 湖北飞龙摩擦密封材料股份有限公司 | A kind of list backing pin brake |
| CN110595319A (en) * | 2019-10-25 | 2019-12-20 | 安徽江淮专用汽车有限公司 | Measuring instrument for brake shoe of middle shaft of trailer |
| CN110595319B (en) * | 2019-10-25 | 2024-05-17 | 安徽江淮专用汽车有限公司 | Measuring instrument for center axle brake shoe of trailer |
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