CN202765201U - Eccentric camshaft for servo brake - Google Patents
Eccentric camshaft for servo brake Download PDFInfo
- Publication number
- CN202765201U CN202765201U CN2012204848800U CN201220484880U CN202765201U CN 202765201 U CN202765201 U CN 202765201U CN 2012204848800 U CN2012204848800 U CN 2012204848800U CN 201220484880 U CN201220484880 U CN 201220484880U CN 202765201 U CN202765201 U CN 202765201U
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- CN
- China
- Prior art keywords
- eccentric
- eccentric body
- brake
- eccentric cam
- camshaft
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses an eccentric camshaft for a servo brake which is composed of a crank throw connection part, a driving shaft and an eccentric body in sequence. The eccentric camshaft is composed of the eccentric body is a flat column body, two narrow surfaces of the eccentric body are arc surfaces, the longitudinal center line of the eccentric body is parallel to the axis of the driving shaft, and a preset distance is kept between the longitudinal center line of the eccentric body and the axis of the driving shaft. According to the eccentric camshaft, the eccentric body is a flat column, a bearing structure close to force balance can not occur during brake, simultaneously, the eccentric body has promoting force for a main brake block and a secondary block, dynamic stress is achieved, and therefore the phenomenon that sticking can occur if loosing is not conducted after brake locking, and sticking-prevention effect is achieved.
Description
Technical field
The utility model relates to a kind of bicycle, boosted vehicle, electric vehicle servant brake parts, is a kind of servant brake eccentric cam shaft specifically.
Background technology
Chinese utility model patent (patent No. 200720035491.9) discloses a kind of servant brake for electric motor cycle, and Chinese utility model patent (patent No. 200910197511.6) discloses a kind of motor-car servant brake.Two disclosed servant brakes of patent document, its basic structure is identical, the basic structure that has all adopted existing servant brake generally to adopt.The basic structure of existing servant brake (claims again major and minor slipper by the hoof piece group in fuse-box and the fuse-box, or upper and lower hoof piece) consists of, the major-minor slipper is flexibly connected by adapter shaft and fuse-box, and fuse-box servo-actuated hole herein is waist shaped hole, has the servo-actuated interval of secondary slipper.Brake rod connects adapter shaft, and the other end of secondary slipper is fixed on the adapter shaft, and the adapter shaft end is provided with eccentric cam, and eccentric cam is resisted against the other end of main brake piece.Rolling brake bar, eccentric cam rely on eccentric action main brake piece to produce braking force, and along with being rotated further of eccentric cam, it is servo-actuated that the main brake piece drives secondary slipper by adapter shaft, and two hoof pieces produce braking force thereupon simultaneously.Take-off the brake bar, eccentric cam can turn round and reset, and two hoof pieces reset thereupon.But, this structure, its eccentric cam is coaxial assembling with secondary slipper end, does not have stressed, only stressed with main brake piece end, add the reason that the eccentric cam shape is intrinsic, in the high vehicle speeds process, carry out in the situation of emergency braking, after braking procedure finishes, stuck phenomenon can appear in eccentric cam and main brake piece end, can not reset, and causes brake locking.
The utility model content
Technical problem to be solved in the utility model is to overcome the defective that prior art exists, and has proposed a kind of servant brake eccentric cam shaft, for servant brake, and the generation of the stuck phenomenon that can effectively prevent from braking.
A kind of servant brake eccentric cam shaft of the utility model is made of successively crank throw connecting portion, axle drive shaft, eccentric body; It is characterized in that: described eccentric body is flat-shaped cylinder, and two narrow side is arc surface; The distance that the longitudinal centerline of eccentric body is parallel with drive axis and maintenance is set.
Servant brake comprises fuse-box, main brake piece, secondary slipper, crank throw, eccentric cam shaft.Fuse-box is provided with eccentric cam shaft mounting hole and the servo-actuated hole of adapter shaft.One end of main brake piece and secondary slipper is hinged by adapter shaft, and adapter shaft is installed in the servo-actuated hole of adapter shaft.Camshaft is installed in the eccentric cam shaft mounting hole, and the outer end of camshaft fuse-box is installed crank throw.Camshaft adopts the utility model servant brake eccentric cam shaft.Establish extension spring between the other end end of main brake piece and secondary slipper, the end of main brake piece and secondary slipper is resisted against respectively on the broad side surface of eccentric body.
Further improvement project is: the end of eccentric body is provided with circular end cap, establishes circular connected unit between eccentric body and axle drive shaft.The effect of end cap is to guarantee the stable of eccentric body and main brake piece and secondary slipper mutual alignment relation.
During car brakeing, the pulling crank throw, rotate eccentric body, eccentric body is owing to eccentric structure, and eccentric body can drive rapid outer the moving in end of main brake piece, the main brake piece at first produces braking force, along with being rotated further of eccentric body, it is servo-actuated that the main brake piece can drive secondary slipper by adapter shaft, and the while eccentric body can drive the end of secondary slipper and slowly move outward, until two slipper all produce braking force, reach the purpose of brake.Unclamp crank throw, eccentric body, major-minor slipper can reset under the effect of extension spring.
The utility model, because eccentric body is flat-shaped cylinder, force structure near stress balance can not appear when braking, simultaneously, because eccentric body has motivator to main brake piece and secondary slipper, is in dynamic stress, therefore, greatly reduce that not unclamp behind the brake locking be the generation of stuck phenomenon, have anti-jamming effect.
Description of drawings
Fig. 1 is the utility model servant brake schematic perspective view (outside).
Fig. 2 is the utility model servant brake schematic perspective view (inboard).
Fig. 3 fuse-box schematic perspective view.
Fig. 4 is eccentric cam shaft A scheme graphics.
Fig. 5 is eccentric cam shaft A scheme front view.
Fig. 6 is eccentric cam shaft A scheme left view.
Fig. 7 is eccentric cam shaft A scheme birds-eye view.
Fig. 8 is eccentric cam shaft B scheme graphics.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further details.
Shown in Fig. 1,2,3,4, servant brake is made of crank throw connecting portion 81, axle drive shaft 82, eccentric body 83 successively with eccentric cam shaft 8.Eccentric body is flat-shaped cylinder, and two narrow side is arc surface; The longitudinal centerline 84 of eccentric body and drive axis 85 are parallel and keep the distance set.
Adopt the structure of the servant brake of the utility model eccentric cam shaft: shown in Fig. 6,7,8.Servant brake 1 comprises fuse-box 2, main brake piece 12, secondary slipper 14, crank throw 10, eccentric cam shaft 8; Fuse-box is provided with eccentric cam shaft mounting hole 27 and the servo-actuated hole 24 of adapter shaft.One end of main brake piece and secondary slipper is hinged by adapter shaft 5, and adapter shaft 5 is installed in the servo-actuated hole 24 of adapter shaft.Pad 3 is sleeved on the adapter shaft 5, jam nut 4 the insides, and jam nut 4 is sleeved on the adapter shaft 5, is used for the axial motion of fixed connection shaft 5 on fuse-box 2.Adapter shaft 5 one ends are contained on main brake piece and the secondary slipper, are used for supporting main brake piece and secondary slipper and rotate, and an end is contained in the servo-actuated hole 24 of fuse-box adapter shaft, and main brake piece and secondary slipper is servo-actuated when guaranteeing to brake, and increases braking force.Axis mounting hole 6 is used at the motor axis brake being installed and uses.
Camshaft 8 is installed in the eccentric cam shaft mounting hole 27, the outer end of camshaft fuse-box is installed crank throw 10, crank throw jam nut 7 cooperates with crank throw lock screw 9 and is used for locking crank throw 10, and crank throw is fixed on the eccentric cam shaft 8, and the crank throw of crank throw is stopped line mounting hole 11 for connecting the line of stopping.An end end is eccentric body 83 in the camshaft fuse-box.Establish extension spring (claiming again the slipper reset tension spring) 18 between the other end end of main brake piece and secondary slipper, the end of main brake piece and secondary slipper is resisted against respectively on the broad side surface of eccentric body 83.
As shown in Figure 5, the end of eccentric body is provided with circular end cap 86, establishes circular connected unit 87 between eccentric body and axle drive shaft.The effect of end cap is to guarantee the stable of eccentric body and main brake piece and secondary slipper mutual alignment relation.
Claims (2)
1. a servant brake eccentric cam shaft is made of successively crank throw connecting portion, axle drive shaft, eccentric body; It is characterized in that: described eccentric body is flat-shaped cylinder, and two narrow side is arc surface; The distance that the longitudinal centerline of eccentric body is parallel with drive axis and maintenance is set.
2. described servant brake eccentric cam shaft according to claim 1, it is characterized in that: the end of described eccentric body is provided with circular end cap, establishes circular connected unit between eccentric body and axle drive shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204848800U CN202765201U (en) | 2012-09-21 | 2012-09-21 | Eccentric camshaft for servo brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204848800U CN202765201U (en) | 2012-09-21 | 2012-09-21 | Eccentric camshaft for servo brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202765201U true CN202765201U (en) | 2013-03-06 |
Family
ID=47771795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204848800U Withdrawn - After Issue CN202765201U (en) | 2012-09-21 | 2012-09-21 | Eccentric camshaft for servo brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202765201U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815218A (en) * | 2012-09-21 | 2012-12-12 | 唐泽交通器材(泰州)有限公司 | Eccentric camshaft for servo brake |
-
2012
- 2012-09-21 CN CN2012204848800U patent/CN202765201U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815218A (en) * | 2012-09-21 | 2012-12-12 | 唐泽交通器材(泰州)有限公司 | Eccentric camshaft for servo brake |
| CN102815218B (en) * | 2012-09-21 | 2015-01-21 | 唐泽交通器材(泰州)有限公司 | Eccentric camshaft for servo brake |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130306 Effective date of abandoning: 20150121 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130306 Effective date of abandoning: 20150121 |
|
| RGAV | Abandon patent right to avoid regrant |