CN101767575B - Electric braking system - Google Patents
Electric braking system Download PDFInfo
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- CN101767575B CN101767575B CN200910254596.7A CN200910254596A CN101767575B CN 101767575 B CN101767575 B CN 101767575B CN 200910254596 A CN200910254596 A CN 200910254596A CN 101767575 B CN101767575 B CN 101767575B
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- 230000033001 locomotion Effects 0.000 claims description 17
- 239000012530 fluid Substances 0.000 abstract description 3
- 230000007850 degeneration Effects 0.000 abstract 1
- 230000000979 retarding effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to a vehicle braking system, which comprises a brake disc, brake calibers (3) two brake plates (13) arranged at two sides of a retarding disc (6), a driving device and an executing device; the executing device can push the brake plates (13) to act under drive of the driving device. The invention is designed to improve the technical problems that the existing hydraulic braking system is complicated in structure, and is easy to cause braking failure due to leakage of the hydraulic pipe or degeneration of brake fluid. The invention has the advantages of convenient operation, high reliability and simple structure.
Description
Technical field
The present invention relates to a kind of motor vehicle braking system.
Background technology
Brake system (being commonly called as brake, lock) is the parts that make the movement parts in mechanical equipment stop or slowing down, and mainly brake bracket, brake component and operating control etc., consists of.In order to increase lock torque and to reduce scantling of structure, brake system is arranged on the turning cylinder of mechanical equipment conventionally.Brake system is divided into plate disc brake and drum brake mechanism.
1, drum brake mechanism has the good effect of certainly stopping and manufacturing cost lower than plate disc brake.But the shortcoming of drum brake mechanism maximum is can skid after being stained with rainwater rainy day, causes brake failure.
2, the rotating element in the friction pair of plate disc brake is the rosette of end face work, is called as brake disc, and its retaining element comprises brake caliper and brake plate.Plate disc brake is divided into again determines caliper disc and floating caliper type disc two classes.The centnifugal force of plate disc brake can outwards be dished out the pollutions such as water, dust, to maintain the certain cleanliness level of plate disc brake.In addition because plate disc brake part is independent outside, than drum brake mechanism, be easier to maintenance.
But existing brake system is all to adopt hydraulic braking, thus complex structure, easily because conduit under fluid pressure is revealed or the rotten brake failure that causes of braking liquid.
Summary of the invention
The object of this invention is to provide a kind of electric brake system, it has improved existing hydraulic brake system complex structure, easily because conduit under fluid pressure is revealed or braking liquid goes bad, has caused the technical matters of brake failure.
Technical solution of the present invention:
An electric brake system, comprises brake disc, brake caliper 3, is arranged on two brake plates 13, actuating device, the executive device of brake disc 6 two sides, and described actuating unit can promote brake plate 13 actions under the driving of actuating device; Its special character is:
Described actuating device is the electric ball screw load push-pull being arranged on brake caliper 3, and described electric ball screw load push-pull comprises driving motor 7, controller 4, runner assembly, translation assembly, position transduser;
Described runner assembly comprises bearing chamber 30, leading screw 14, is arranged on the pressure bearing pair 25 in bearing chamber 30; One end of described leading screw 14 is provided with outside thread, and its other end is connected with driving motor output shaft 24, on its middle part circumference face, the spacing pillow block 26 vertical with leading screw 14 axis directions is set; Described spacing pillow block 26 is arranged in bearing chamber 30, and two pressure bearings of described pressure bearing pair 25 are separately positioned on two sides of spacing pillow block 26;
Described translation assembly comprises limit base 8, be arranged on translation pull bar 9 in limit base 8, can be combined into leading screw 14 nut 15 of ball screw assembly; The external part of described translation pull bar 9 is connected with executive device, and the other end of described translation pull bar 9 is provided with blind hole, and described nut 15 is embedded in blind hole; On described limit base 8, be provided with and can come and go mobile centre hole 33 for translation pull bar 9;
Described driving motor 7 is fixed on a side of bearing chamber 30, and described limit base 8 is fixed on the opposite side of bearing chamber 30;
Described position transduser comprises at least two Hall elements 32 and a permanent magnet 31; Described permanent magnet 31 is fixed on the circumference side of translation pull bar 9, and described Hall element 32 is fixed on limit base 8 and the corresponding position of permanent magnet 31, and the output signal of described Hall element 32 is sent into controller 4.
Above-mentioned executive device comprises brake rod 17, rotor plate 1, be arranged on braking screw 2 on brake caliper 3, can be combined into braking screw 2 stop-off nut 16 of braking ball screw assembly; The free end of described rotor plate 1 is connected with translation pull bar 9; The other end of described rotor plate 1 is connected with braking screw 2 is vertical, and described stop-off nut 16 is embedded in the inner end surface of brake rod 17, and the external part of described brake rod 17 contacts with the non-operative end surface of one of them brake plate 13.
Above-mentioned electric brake system comprises emergency braking bracing wire 12; The free end of described rotor plate 1 is provided with the waist shaped hole consistent with drive link sense of motion 10, is provided with the bearing pin 11 matching with waist shaped hole on described drive link, and one end of described brake pulling wire is fixed on the free end of rotor plate 1.
Above-mentioned executive device comprises and is arranged in brake caliper 3 wedge block 21 and fixed block 22 and the brake silpper 18 that is separately positioned on wedge block 21 both sides, described wedge block 21 comprises identical and centrosymmetric inclined-plane, two oblique angles, described fixed block 22 and brake silpper 18 are provided with an inclined-plane at identical oblique angle, the large end face of described wedge block 21 is connected with the external part of translation pull bar 9, and side relative with inclined-plane on described brake silpper 18 contacts with one of them brake plate 13.
Above-mentioned electric brake system comprises emergency braking bracing wire 12; The large end face of described wedge block 21 is provided with unthreaded hole 23, and the external part of described translation pull bar 9 is the brake push rod 20 that stretches into unthreaded hole 23; One end of described emergency braking bracing wire 12 is fixed on the small end face of wedge block 21.
The circumference side of above-mentioned translation pull bar 9 is provided with the limiting stopper 27 of two evaginations; On described limit base 8, be provided with and can come and go two position-limited troughs 28 that slide for two limiting stoppers 27.
Above-mentioned driving motor 7 is stepping motor or servomotor.
The advantage that the present invention has is:
1, the present invention promotes by electric ball screw load push-pull the object that brake plate that corresponding executive device promotes plate disc brake reaches braking.Because electric ball screw load push-pull is that the circular movement of driving motor stepping motor or servomotor is converted to straight-line motion, so electric ball screw load push-pull can be by parameter or curve motions such as the push-and-pull strength of setting and kinematic velocitys, and can imitate abs braking mode and carry out work.
2, the present invention compare with existing hydraulic braking mode have advantages of easy to operate, reliability is high, simple in structure.
3, the present invention can be widely used in braking and the emergency braking of heavy duty truck, large tractor, all kinds of construction machinery and equipment, big machinery Fabricating machinery (lathe, milling machine, grinding machine etc.).
Accompanying drawing explanation
Fig. 1 is the structural representation of the first brake system of the present invention;
Fig. 2 is the right elevation of Fig. 1;
Position relationship schematic diagram when Fig. 3 is the first brake system braking of the present invention;
Fig. 4 is the right elevation of Fig. 3;
Fig. 5 is the partial enlarged drawing of the first brake system of the present invention;
Fig. 6 is the structural representation of the second brake system of the present invention;
Fig. 7 is the right elevation of Fig. 6;
Position relationship schematic diagram when Fig. 8 is the second brake system braking of the present invention;
Fig. 9 is the right elevation of Fig. 8;
Figure 10 is the partial enlarged drawing of the second brake system of the present invention;
Figure 11 is the structural representation of electric ball screw load push-pull of the present invention;
Figure 12 is the right elevation of Figure 11;
Figure 13 is the second structural representation of the waist shaped hole of the first brake system of the present invention.
Reference numeral is as follows:
1-rotor plate, 2-braking screw, 3-brake caliper, 4-controller, 5-turning cylinder, 6-brake disc, 7-driving motor, 8-limit base, 9-translation pull bar, 10-waist shaped hole, 11-bearing pin, the bracing wire of 12-emergency braking, 13-brake plate, 14-leading screw, 15-nut, 16-stop-off nut, 17-brake rod, 18-brake silpper, 19-bracing wire dop, 20-brake push rod, 21-wedge block, 22-fixed block, 23-unthreaded hole, 24-motor output shaft, 25-pressure bearing is secondary, the spacing pillow block of 26-, 27-limiting stopper, 28-position-limited trough, 29-cover of dust, 30-bearing chamber, 31-permanent magnet, 32-Hall element, 33-centre hole.
The specific embodiment
Core of the present invention is electric ball screw load push-pull, and referring to Figure 11 and Figure 12, electric ball screw load push-pull comprises driving motor, controller, runner assembly, translation assembly, position transduser; Runner assembly comprises bearing chamber, leading screw, is arranged on the pressure bearing pair in bearing chamber; One end of leading screw is provided with outside thread, and its other end is connected with driving motor output shaft, on its middle part circumference face, the spacing pillow block vertical with leading screw axis direction is set; Spacing pillow block is arranged in bearing chamber, and two pressure bearings of pressure bearing pair are separately positioned on two sides of spacing pillow block; Translation assembly comprises limit base, be arranged on translation pull bar in limit base, can be combined into leading screw the nut of ball screw assembly; The external part of translation pull bar is connected with executive device, and the other end of translation pull bar is provided with blind hole, and nut is embedded in blind hole; On limit base, be provided with and can come and go mobile centre hole for translation pull bar; Driving motor is fixed on a side of bearing chamber, and limit base is fixed on the opposite side of bearing chamber; Position transduser comprises at least two Hall elements and a permanent magnet; Permanent magnet is fixed on the circumference side of translation pull bar, and Hall element is fixed on limit base and the corresponding position of permanent magnet, and the output signal of Hall element is sent into controller; Driving motor can adopt stepping motor or servomotor.
If the executive device that translation pull bar right-hand member connects can not limit the rotation of translation pull bar, the limiting stopper of two evaginations need to be set in the circumference side of translation pull bar, on limit base, arrange and can supply two two position-limited troughs that limiting stopper horizontally slips simultaneously; Utilize position-limited trough and limiting stopper to limit the rotation of translation pull bar, make it can only translation in centre hole.
The principle of work of electric ball screw load push-pull: when control signal is sent into after driving motor, electric machine rotation, because spacing pillow block is limit by pressure bearing pair, screw mandrel can only rotate can not translation; Because the limited groove of limiting stopper is limit, or translation pull bar is performed device and limits, and the rotation of screw mandrel can only drive translation pull bar to move along the centre hole of limit base, thereby drives the executive device with the interlock of translation pull bar external part; After the motion of translation pull bar puts in place, Hall element senses the magnetic line of force signal of the permanent magnet simultaneously moving with translation pull bar, and output signal is sent into controller, thereby controls the switch of driving motor.
The first electric brake system of the present invention, referring to Fig. 1 to Fig. 5, comprises brake disc, brake caliper, is arranged on two brake plates, electric ball screw load push-pull, the executive device of brake disc two sides; Executive device comprises brake rod, rotor plate, be arranged on braking screw on brake caliper, can be combined into braking screw the stop-off nut of braking ball screw assembly; The free end of rotor plate and translation pull bar are hinged; The other end of rotor plate is vertical with braking screw to be connected, and stop-off nut is embedded in the inner end surface of brake rod, and the external part of brake rod contacts with the non-operative end surface of one of them brake plate.
The working process of the first electric brake system: the outside motion of translation of translation pull bar drives the free end of the rotor plate of executive device to rotate, thereby the turning cylinder of rotor plate is braking screw to rotate, the rotation of braking screw converts the translation of brake rod to, the translation of brake rod promotes the close also friction brake disk of brake plate, produces braking effect; While need finishing braking, translation pull bar is reversed in the centre hole of driving motor retraction limit base of rotation, drives the free end of rotor plate to rotate backward, thus the reversion of braking screw mandrel, brake rod is retracted, and brake plate is away from brake disc, end of braking.
When the first electric brake system is applied to car brakeing, also emergency braking bracing wire must be set; Now, the free end of rotor plate need arrange a waist shaped hole consistent with drive link sense of motion, is provided with the bearing pin matching with waist shaped hole on drive link, and one end of emergency braking bracing wire is fixed on the free end of rotor plate.When the other end of emergency braking bracing wire when pulled, emergency braking bracing wire pulls the free end of rotor plate to clockwise rotate, because the bearing pin of translation pull bar is now positioned at the lower end of rotor plate waist shaped hole, the rotation of rotor plate is not subject to the restriction of translation pull bar, emergency braking bracing wire can drive rotational lead screw motion, realizes emergency braking.
The second electric brake system of the present invention, referring to Fig. 6 to Figure 10, comprises brake disc, brake caliper, is arranged on two brake plates, electric ball screw load push-pull, the executive device of brake disc two sides; Executive device comprises fixed block and the brake silpper that is arranged on the wedge block in brake caliper and is separately positioned on wedge block both sides, wedge block comprises identical and centrosymmetric inclined-plane, two oblique angles, fixed block and brake silpper are provided with an inclined-plane at identical oblique angle, the external part of the large end face of wedge block and translation pull bar is connected, and side relative with inclined-plane on brake silpper contacts with one of them brake plate.
The working process of the second electric brake system: the outside motion of translation of translation pull bar promotes the wedge block of executive device towards the separately direction motion of fixed block and brake silpper, motionless because of fixed block, brake silpper is moved along the direction vertical with wedge sense of motion by the slope driving of wedge block; Brake silpper directly promotes the close also friction brake disk of brake plate, produces braking effect; While need finishing braking, translation pull bar is reversed in the centre hole of driving motor retraction limit base of rotation, drives wedge block counter motion, and brake silpper is braked sheet and pushes back, end of braking.
When the second electric brake system is applied to car brakeing, also emergency braking bracing wire must be set; Now can unthreaded hole be set at the large end face of wedge block, the external part of translation pull bar is the brake push rod that stretches into unthreaded hole; One end of emergency braking bracing wire is fixed on the small end face of wedge block.When needs emergency braking, pull emergency braking bracing wire, bracing wire dop drives wedge block towards the separately direction motion of fixed block and brake silpper, because brake push rod is stretch in unthreaded hole and be not connected with unthreaded hole, so the motion of wedge block is not subject to the restriction of translation pull bar, the motion of wedge block is delivered to brake plate, produces emergency braking effect.
Claims (7)
1. an electric brake system, comprise brake disc, brake caliper (3), be arranged on two brake plates (13), actuating device, the executive device of brake disc (6) two sides, described executive device can promote brake plate (13) action under the driving of actuating device; It is characterized in that:
Described actuating device is for to be arranged on the electric ball screw load push-pull on brake caliper (3), and described electric ball screw load push-pull comprises driving motor (7), controller (4), runner assembly, translation assembly, position transduser;
Described runner assembly comprises bearing chamber (30), leading screw (14), is arranged on the pressure bearing secondary (25) in bearing chamber (30); One end of described leading screw (14) is provided with outside thread, and its other end is connected with driving motor output shaft (24), on its middle part circumference face, the spacing pillow block (26) vertical with leading screw (14) axis direction is set; Described spacing pillow block (26) is arranged in bearing chamber (30), and two pressure bearings of described pressure bearing secondary (25) are separately positioned on two sides of spacing pillow block (26);
Described translation assembly comprises limit base (8), be arranged on translation pull bar (9) in limit base (8), be combined into the nut (15) of ball screw assembly, with leading screw (14); The external part of described translation pull bar (9) is connected with executive device, and the other end of described translation pull bar (9) is provided with blind hole, and described nut (15) is embedded in blind hole; On described limit base (8), be provided with and can come and go mobile centre hole (33) for translation pull bar (9);
Described driving motor (7) is fixed on a side of bearing chamber (30), and described limit base (8) is fixed on the opposite side of bearing chamber (30);
Described position transduser comprises at least two Hall elements (32) and a permanent magnet (31); Described permanent magnet (31) is fixed on the circumference side of translation pull bar (9), described Hall element (32) is fixed on limit base (8) above and the corresponding position of permanent magnet (31), and the output signal of described Hall element (32) is sent into controller (4); Described executive device comprises brake rod (17), rotor plate (1), be arranged on braking screw (2) on brake caliper (3), be combined into the stop-off nut (16) of braking ball screw assembly, with braking screw (2); The free end of described rotor plate (1) is connected with translation pull bar (9); The other end of described rotor plate (1) and vertical being connected of braking screw (2), described stop-off nut (16) is embedded in the inner end surface of brake rod (17), and the external part of described brake rod (17) contacts with the non-operative end surface of one of them brake plate (13);
Described electric brake system comprises emergency braking bracing wire (12); The free end of described rotor plate (1) is provided with the waist shaped hole (10) consistent with translation pull bar sense of motion, on described translation pull bar, be provided with the bearing pin (11) matching with waist shaped hole, one end of described emergency braking bracing wire is fixed on the free end of rotor plate (1).
2. electric brake system according to claim 1, is characterized in that: the circumference side of described translation pull bar (9) is provided with the limiting stopper (27) of two evaginations; On described limit base (8), be provided with and can come and go two position-limited troughs (28) that slide for two limiting stoppers (27).
3. electric brake system according to claim 1, is characterized in that: described driving motor (7) is stepping motor or servomotor.
4. an electric brake system, comprise brake disc, brake caliper (3), be arranged on two brake plates (13), actuating device, the executive device of brake disc (6) two sides, described executive device can promote brake plate (13) action under the driving of actuating device;
Described actuating device is for to be arranged on the electric ball screw load push-pull on brake caliper (3), and described electric ball screw load push-pull comprises driving motor (7), controller (4), runner assembly, translation assembly, position transduser;
Described runner assembly comprises bearing chamber (30), leading screw (14), is arranged on the pressure bearing secondary (25) in bearing chamber (30); One end of described leading screw (14) is provided with outside thread, and its other end is connected with driving motor output shaft (24), on its middle part circumference face, the spacing pillow block (26) vertical with leading screw (14) axis direction is set; Described spacing pillow block (26) is arranged in bearing chamber (30), and two pressure bearings of described pressure bearing secondary (25) are separately positioned on two sides of spacing pillow block (26);
Described translation assembly comprises limit base (8), be arranged on translation pull bar (9) in limit base (8), be combined into the nut (15) of ball screw assembly, with leading screw (14); The external part of described translation pull bar (9) is connected with executive device, and the other end of described translation pull bar (9) is provided with blind hole, and described nut (15) is embedded in blind hole; On described limit base (8), be provided with and can come and go mobile centre hole (33) for translation pull bar (9);
Described driving motor (7) is fixed on a side of bearing chamber (30), and described limit base (8) is fixed on the opposite side of bearing chamber (30);
Described position transduser comprises at least two Hall elements (32) and a permanent magnet (31); Described permanent magnet (31) is fixed on the circumference side of translation pull bar (9), described Hall element (32) is fixed on limit base (8) above and the corresponding position of permanent magnet (31), and the output signal of described Hall element (32) is sent into controller (4);
It is characterized in that: described executive device comprises the wedge block (21) being arranged in brake caliper (3) and fixed block (22) and the brake silpper (18) that is separately positioned on wedge block (21) both sides, described wedge block (21) comprises identical and centrosymmetric inclined-plane, two oblique angles, described fixed block (22) and brake silpper (18) are provided with an inclined-plane at identical oblique angle, the large end face of described wedge block (21) is connected with the external part of translation pull bar (9), and the upper side relative with inclined-plane of described brake silpper (18) contacts with one of them brake plate (13).
5. electric brake system according to claim 4, is characterized in that: described electric brake system comprises emergency braking bracing wire (12); The large end face of described wedge block (21) is provided with unthreaded hole (23), and the external part of described translation pull bar (9) is for stretching into the brake push rod (20) of unthreaded hole (23); One end of described emergency braking bracing wire (12) is fixed on the small end face of wedge block (21).
6. according to the electric brake system described in claim 4 or 5, it is characterized in that: the circumference side of described translation pull bar (9) is provided with the limiting stopper (27) of two evaginations; On described limit base (8), be provided with and may come and go two position-limited troughs (28) that slide for two limiting stoppers (27).
7. electric brake system according to claim 6, is characterized in that: described driving motor (7) is stepping motor or servomotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910254596.7A CN101767575B (en) | 2009-12-20 | 2009-12-20 | Electric braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910254596.7A CN101767575B (en) | 2009-12-20 | 2009-12-20 | Electric braking system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101767575A CN101767575A (en) | 2010-07-07 |
| CN101767575B true CN101767575B (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910254596.7A Active CN101767575B (en) | 2009-12-20 | 2009-12-20 | Electric braking system |
Country Status (1)
| Country | Link |
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| CN (1) | CN101767575B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102328552B (en) * | 2011-07-11 | 2013-04-17 | 江苏金陵体育器材股份有限公司 | Stand roller braking device |
| CN103100954B (en) * | 2011-11-09 | 2015-10-28 | 大亚人造板集团有限公司 | Sander braking protection device and sander |
| CN102628752A (en) * | 2012-03-23 | 2012-08-08 | 中国农业大学 | Third drum mechanism of slide type automobile drum experiment bench |
| CN103062256B (en) * | 2013-02-02 | 2015-11-18 | 江苏武东机械有限公司 | Taper disk type braker |
| CN103148216B (en) * | 2013-03-28 | 2015-06-17 | 合肥工业大学 | Parking braking mechanism used for automotive transmission |
| CN103465880B (en) * | 2013-10-08 | 2015-09-23 | 江苏骆氏减震件有限公司 | A kind of wedge that utilizes is to carry out the Wheeling System of friction-type locking |
| CN107448520B (en) * | 2017-09-26 | 2019-03-22 | 浙江师范大学 | A kind of electric mechanical brake-by-wire device |
| CN107975553A (en) * | 2017-12-18 | 2018-05-01 | 西安蒜泥电子科技有限责任公司 | A kind of electro-magnetic braking device |
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|---|---|---|---|---|
| US3357522A (en) * | 1965-10-01 | 1967-12-12 | Gen Motors Corp | Parking brake mechanism for disk brakes |
| US5020643A (en) * | 1988-10-03 | 1991-06-04 | Motion Control Industries, Inc. | Floating friction brake |
| CN2356313Y (en) * | 1998-12-10 | 1999-12-29 | 吉林工业大学 | Electronic discrete clutch displacement sensor |
| FR2849136A1 (en) * | 2002-12-20 | 2004-06-25 | Bosch Gmbh Robert | Disk brake motor, has sensitive unit sensitive unit detecting wearing of friction unit and provoking step-by-step control device of self-by-step control device to unscrew nut engaged on screw based on wearing |
| CN1942354A (en) * | 2004-03-29 | 2007-04-04 | 赵韩龙 | Brake actuating apparatus using an electric motor |
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2009
- 2009-12-20 CN CN200910254596.7A patent/CN101767575B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3357522A (en) * | 1965-10-01 | 1967-12-12 | Gen Motors Corp | Parking brake mechanism for disk brakes |
| US5020643A (en) * | 1988-10-03 | 1991-06-04 | Motion Control Industries, Inc. | Floating friction brake |
| CN2356313Y (en) * | 1998-12-10 | 1999-12-29 | 吉林工业大学 | Electronic discrete clutch displacement sensor |
| FR2849136A1 (en) * | 2002-12-20 | 2004-06-25 | Bosch Gmbh Robert | Disk brake motor, has sensitive unit sensitive unit detecting wearing of friction unit and provoking step-by-step control device of self-by-step control device to unscrew nut engaged on screw based on wearing |
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Non-Patent Citations (1)
| Title |
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| JP特开平8-72702A 1996.03.19 |
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| CN101767575A (en) | 2010-07-07 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: PAN YAMIN Free format text: FORMER OWNER: SUN LI |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Sun Li Inventor after: Zeng Weidong Inventor after: Pan Yamin Inventor before: Sun Li Inventor before: Zeng Weidong |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: SUN LI ZENG WEIDONG TO: SUN LI ZENG WEIDONG PAN YAMIN |
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