CN201362244Y - Parking braking system - Google Patents
Parking braking system Download PDFInfo
- Publication number
- CN201362244Y CN201362244Y CNU2009201138579U CN200920113857U CN201362244Y CN 201362244 Y CN201362244 Y CN 201362244Y CN U2009201138579 U CNU2009201138579 U CN U2009201138579U CN 200920113857 U CN200920113857 U CN 200920113857U CN 201362244 Y CN201362244 Y CN 201362244Y
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- CN
- China
- Prior art keywords
- piston
- parking
- setting nut
- steel ball
- spring
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a parking braking system, comprising a brake caliper; the brake caliper is internally provided with a regulator assembly and a piston assembly; the piston assembly comprises a piston and an adjusting nut; the adjusting nut is sleeved with an O-shaped ring which is arranged in the piston in an interference fit way; the adjusting nut is provided with an oil supply hole to lead the cavity of the adjusting nut to be communicated with the cavity of the piston; the end part of the adjusting nut, close to a friction block, is provided with a sealing end cover; the regulator assembly comprises a parking mandril and an adjusting bolt which have different orientations; a friction plate is arranged between the parking mandril and the adjusting bolt; one side of the parking mandril is provided with a steel ball seat; a steel ball is arranged between the parking mandril and the steel ball seat; the adjusting bolt is sleeved with a spring seat and a pressure spring in the spring seat; and the spring seat is fixedly connected with the steel ball seat to lead the regulator assembly to be a whole. The parking braking system can automatically compensate the gap generated by the abrasion of the friction block and the brake disc, is more accurate in gap adjustment compared with the existing piston assembly, and improves the braking stability of the parking system.
Description
Technical field
The utility model relates to a kind of emergency brake system, specifically relates to the piston assembly in the emergency brake system.
Background technology
Braking during standstill generally is called parking brake, its effect be exactly when stopping to resistance of automobile, make automobile not slip car.Braking during standstill, the park in parking brake or the automatic transmission is just pinned transmission shaft or trailing wheel, and braking during standstill is little more a lot of than the power of service brake, only is to stop on sloping road that not slip car just passable.Generally comprised brake clamp in the emergency brake system, piston assembly, Regulator Assembly and elastic element etc., be the piston assembly in the existing emergency brake system as shown in Figure 1, comprise piston 7 and setting nut 8, this piston assembly is when emergency brake system is worked, hydraulic oil enters internal piston and promotes piston to left movement, because contacting friction with brake disc at driving glancing impact friction disc brakes, friction disc is experience wear, need piston assembly and Regulator Assembly automatic compensation gap in the emergency brake system, and hydraulic oil only produces hydraulic coupling to piston 7, adjustment nut 8 is not subjected to hydraulic coupling in the piston assembly, clearance automatic compensation amount inaccuracy, it is weak to make brake clamp compensate generation braking not in place in the work-hours crack easily, and the Parking stroke is excessive, defectives such as Parking instability.
The utility model content
The purpose of this utility model is to provide a kind of emergency brake system, can effectively solve in the existing emergency brake system has only piston stressed, cause compensation rate inaccuracy when adjust the clearance, it is weak to make brake clamp compensate generation braking not in place in the work-hours crack easily, the Parking stroke is excessive, the Parking problem of unstable.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme: a kind of emergency brake system, comprise brake clamp, be provided with Regulator Assembly and piston assembly in the brake clamp, piston assembly comprises piston and setting nut, it is characterized in that: be socketed with O shape circle on the setting nut, O shape circle is interference fitted in the piston, setting nut is provided with fuel feed hole makes the setting nut inner chamber communicate with piston cavity, and setting nut is provided with end cover near the end of friction shoe.
Further, setting nut is fixed in the piston cavity by circlip for bore I, is provided with the rotation transition apparatus of piston between setting nut and the circlip for bore I.
Further, rotate transition apparatus and comprise surface bearing and wavy spring, surface bearing is located near piston one side, and the wavy spring both sides are provided with two pads, a pad is located between surface bearing and the wavy spring, and another piece pad is located between wavy spring and the circlip for bore I.
Further, Regulator Assembly comprises towards opposite parking strut and regulates bolt, be provided with friction lining between parking strut and the adjusting bolt, parking strut one side is provided with steel ball seat, be provided with steel ball between parking strut and the steel ball seat, regulate the pressure spring that is arranged with on the bolt in spring perch and the spring perch, spring perch captive joint steel ball seat becomes one the adjuster assembly.
Further, Regulator Assembly is fixed in the brake clamp by circlip for bore II, and circlip for bore II is socketed in the bottom of spring perch cylindrical body.
The utility model is owing to adopted technique scheme, can the automatic compensation friction shoe and the gap that produces because of wearing and tearing of brake disc, transfer the crack more accurate with respect to existing piston assembly, improve the insensitivity of parking system, during hydraulic braking, hydraulic oil promotes piston to left movement except produce pressure at piston cavity, hydraulic oil also enters the setting nut inner chamber by the fuel feed hole on the piston, setting nut is provided with end cover near the end of friction shoe, make hydraulic oil also produce pressure at the setting nut inner chamber, promote setting nut to left movement, because the power of hydraulic coupling is poor on hydraulic coupling that setting nut is suffered and the piston, O shape circle has the elastic deformation restoring force, and adjusting bolt, pressure spring is to the relative pulling force of setting nut, wavy spring is compressed, when displacement reach one regularly setting nut will rotate along with surface bearing, thereby reach the purpose in accurate accent crack.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is the structural representation of piston assembly in the existing emergency brake system;
Fig. 2 is the structural representation of a kind of emergency brake system of the utility model;
Fig. 3 is the structural representation of piston assembly in the utility model;
Fig. 4 is the structural representation of Regulator Assembly in the utility model;
Fig. 5 is an I place structure enlarged diagram among Fig. 2.
The specific embodiment
Extremely shown in Figure 5 as Fig. 2, be a kind of emergency brake system of the utility model, comprise brake control lever 1, brake clamp 4, the friction shoe 2 and the brake disc 3 of friction braking usefulness, friction shoe 2 friction brake discs 3 are realized wheel braking, be provided with Regulator Assembly 6 and piston assembly 5 in the brake clamp 4, brake control lever 1 connects Regulator Assembly 6, Regulator Assembly 6 promotes friction shoe 2 by piston assembly 5, Regulator Assembly 6 comprises towards opposite parking strut 61 and regulates bolt 62, be provided with friction lining 63 between parking strut 61 and the adjusting bolt 62, brake control lever 1 connects parking strut 61, rolling brake arm 1 can drive parking strut 61 and rotate, be socketed with steel ball seat 64 on the parking strut 61, be provided with steel ball 65 between parking strut 61 and the steel ball seat 64, steel ball seat 64 is provided with the chute of circle and highly gradient, regulate the pressure spring 67 that is arranged with on the bolt 62 in spring perch 66 and the spring perch 66, spring perch 66 captive joint steel ball seat 64 become one Regulator Assembly 6, spring perch 66 tops are provided with opening 69, regulate bolt 62 1 end cross-under in opening 69, can in opening 69, slide, Regulator Assembly 6 is fixed in the brake clamp 4 by circlip for bore II 68, and circlip for bore II 68 is socketed in the bottom of spring perch 66 cylindrical bodies.Rotate parking strut 61 steel ball 65 is slided in the chute of steel ball seat 64, compressed pressure spring 67 and promotion are regulated bolt 62 and are propped up piston assembly 5 to left movement.Piston assembly 5 comprises piston 51 and setting nut 52, be socketed with O shape circle 57 on the setting nut 52, O shape circle 57 is interference fitted in the piston 51, setting nut 52 is provided with fuel feed hole 58 makes setting nut 52 inner chambers communicate with piston 51 inner chambers, setting nut 52 is provided with end cover 59 near the end of friction shoe 2, setting nut 52 is fixed in piston 51 inner chambers by circlip for bore I 53, be provided with the rotation transition apparatus of piston 51 between setting nut 52 and the circlip for bore I 53, rotate transition apparatus and comprise surface bearing 54 and wavy spring 55, surface bearing 54 is located near piston 51 1 sides, wavy spring 55 both sides are provided with two pads 56, a pad 56 is located between surface bearing 54 and the wavy spring 55, and another piece pad 56 is located between wavy spring 55 and the circlip for bore I 53.
During braking during standstill, Parking drag-line pulling brake control lever 1, brake control lever 1 drives parking strut 61 and rotates, steel ball 65 is slided in the slideway of steel ball seat 64, make parking strut 61 to left movement, parking strut 61 compressed pressure springs 67 and promotion adjusting bolt 62 straight-line motion left prop up piston assembly 5, and piston assembly 5 promotes friction shoes 2 friction brake discs 3 and realizes braking; Remove downstream pressure spring 67 returns when the Parking drag-line, braking during standstill is removed.Owing to cause the wearing and tearing of friction shoe 2 after the braking, distance between friction shoe 2 and the brake disc 3 is increased, produce the gap between piston 51 and the setting nut 52 during service brake, for this gap of fine compensation, guarantee that setting nut 52 can further promote piston 51 when braking during standstill, when hydraulic braking, hydraulic oil is except piston 51 inner chambers produce pressure, hydraulic oil also enters setting nut 52 inner chambers by the fuel feed hole on the piston 51 58, setting nut 52 is provided with end cover 59 near the end of friction shoe 2, make hydraulic oil also produce pressure, promote setting nut 52 to left movement at setting nut 52 inner chambers.Suffered hydraulic coupling and the hydraulic coupling on the piston 51 of setting nut 52 is poor effectively, can produce relative motion trend between piston 51 and the setting nut 52, setting nut 52 produces displacement relatively to the right to the piston 51 of left movement relatively, make the O shape circle 57 of interference fit produce elastic deformation, O shape circle 57 has the restoring force that recovers deformation, and the relative pulling force of regulating bolt 62,67 pairs of setting nuts 52 of pressure spring, wavy spring 55 is compressed, when displacement reach one regularly setting nut 52 will rotate along with surface bearing 54, thereby reach the purpose in accurate accent crack.
Claims (5)
1, a kind of emergency brake system, comprise brake clamp (4), be provided with Regulator Assembly (6) and piston assembly (5) in the brake clamp (4), described piston assembly (5) comprises piston (51) and setting nut (52), it is characterized in that: be socketed with O shape circle (57) on the described setting nut (52), O shape circle (57) is interference fitted in the described piston (51), described setting nut (52) is provided with fuel feed hole (58) makes setting nut (52) inner chamber communicate with piston (51) inner chamber, and described setting nut (52) is provided with end cover (59) near the end of friction shoe (2).
2, a kind of emergency brake system according to claim 1, it is characterized in that: described setting nut (52) is fixed in piston (51) inner chamber by circlip for bore I (53), is provided with the rotation transition apparatus of piston (51) between described setting nut (52) and the circlip for bore I (53).
3, a kind of emergency brake system according to claim 2, it is characterized in that: described rotation transition apparatus comprises surface bearing (54) and wavy spring (55), described surface bearing (54) is located near piston (51) one sides, described wavy spring (55) both sides are provided with two pads (56), a pad (56) is located between described surface bearing (54) and the wavy spring (55), and another piece pad (56) is located between described wavy spring (55) and the circlip for bore I (53).
4, a kind of emergency brake system according to claim 1, it is characterized in that: described Regulator Assembly (6) comprises towards opposite parking strut (61) and regulates bolt (62), be provided with friction lining (63) between described parking strut (61) and the adjusting bolt (62), described parking strut (61) one sides are provided with steel ball seat (64), be provided with steel ball (65) between parking strut (61) and the described steel ball seat (64), be arranged with the pressure spring (67) in spring perch (66) and the spring perch (66) on the described adjusting bolt (62), the described steel ball seat of spring perch (66) captive joint (64) becomes one Regulator Assembly (6).
5, a kind of emergency brake system according to claim 5, it is characterized in that: described Regulator Assembly (6) is fixed in the brake clamp (4) by circlip for bore II (68), and described circlip for bore II (68) is socketed in the bottom of spring perch (66) cylindrical body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201138579U CN201362244Y (en) | 2009-02-17 | 2009-02-17 | Parking braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201138579U CN201362244Y (en) | 2009-02-17 | 2009-02-17 | Parking braking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201362244Y true CN201362244Y (en) | 2009-12-16 |
Family
ID=41472904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201138579U Expired - Lifetime CN201362244Y (en) | 2009-02-17 | 2009-02-17 | Parking braking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201362244Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518721A (en) * | 2012-01-13 | 2012-06-27 | 冠亚机械工业（昆山）有限公司 | Disk brake |
-
2009
- 2009-02-17 CN CNU2009201138579U patent/CN201362244Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518721A (en) * | 2012-01-13 | 2012-06-27 | 冠亚机械工业（昆山）有限公司 | Disk brake |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091216 |
|
| CX01 | Expiry of patent term |