CN1918397A - Brake shoe hold down clip - Google Patents
Brake shoe hold down clip Download PDFInfo
- Publication number
- CN1918397A CN1918397A CNA2005800048141A CN200580004814A CN1918397A CN 1918397 A CN1918397 A CN 1918397A CN A2005800048141 A CNA2005800048141 A CN A2005800048141A CN 200580004814 A CN200580004814 A CN 200580004814A CN 1918397 A CN1918397 A CN 1918397A
- Authority
- CN
- China
- Prior art keywords
- brake shoe
- clip
- support plate
- spring
- ring
- 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.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/08—Bands, shoes or pads; Pivots or supporting members therefor for internally-engaging brakes
- F16D65/09—Pivots or supporting members therefor
- F16D65/091—Pivots or supporting members therefor for axially holding the segments
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
A brake shoe hold down clip (23,24) is shaped so as to provide a non-linear spring action to resist movements of the brake shoe (11,12) away from the backplate (13), the hold down clip having a lower spring rate to resist small movements of the brake shoe away from the backplate and a higher spring rate which becomes operative in response to higher movements of the brake shoe away from the backplate. The clip includes a spring loop (33,34) with an end portion (35,36) of the loop designed to contact the brake shoe to provide the lower spring rate and portions (37,38) of the loop further from the end portion being designed to contact the brake shoe to make the loop stiffer and thus provide the higher rate in response to larger movements of the brake shoe (11,12) away from the backplate (13).
Description
The present invention relates to brake shoe hold down clip, be used for compressing a brake shoe with respect to relevant drum brake support plate.This type of pressing clip is used between the web of the head that compresses pin and relevant brake shoe usually, and the other end that compresses pin engages the support plate of this drum brake.
This type of pressing clip is well-known, for example is shown among B. P. No.2000561 and the No.2320302.
Though the performance of this type of pressing clip is satisfactory substantially, may encounter problems aspect the motion of support plate coming control brake watt to leave in the mode that can handle normal brake application operation and also can handle under some dynamics state extreme brake load that can appearance.
The form that the purpose of this invention is to provide a kind of improved pressing clip, it can overcome or alleviate above-mentioned difficulties to small part.
Therefore, according to the present invention, a kind of brake shoe hold down clip is provided, its shape can provide a kind of nonlinear spring to be used for resisting the motion that brake shoe leaves support plate, and this compresses and accompanies one and can resist that lower spring speed and one that brake shoe leaves the small movements of support plate becomes that the response brake shoe leaves the bigger motion of support plate and the higher spring speed of operating.
Be appreciated that, a kind of so nonlinear spring speed can will be lower spring speed be designed to the motion that during the normal running of break opposing brake shoe leaves support plate, and being provided hand brake function and service braking function maybe when violent braking occurring simultaneously as driving when brake shoe when some high living load occurring, a kind of higher spring speed enters operation.Therefore in the whole operation scope of brake shoe, can provide more suitably controlling level.Simultaneously and since during the break normal running opposing brake shoe to leave the spring speed of motion of support plate lower, the friction between brake shoe and the support plate is lower, therefore when applying braking, overcomes this frictional force and the braking effort of wasting is less.The higher spring speed of follow-up higher frictional force just just enters operation when needs.
This nonlinear spring speed is that the shape owing to pressing clip obtains.
In a kind of preferred structure, this pressing clip comprises a spring ring, this spring ring has the end of a ring and further leaves the ring part of this end, the end of this ring is designed to contact this brake shoe and lower spring speed is provided, and farther ring partly is designed to contact this brake shoe and makes more rigidity of this ring from this end, thereby the response brake shoe leaves the bigger motion of support plate and higher speed is provided.
In a preferred structure, this clip comprises that engages relevant central standing part and two the outer spring ring parts of stretching out than the two ends of this central authorities' standing part that compress the head of pin, these rings part is stretched out and is contacted brake shoe and normally keep spaced relationship with this standing part to relevant brake shoe, if brake shoe tends to move away this relevant support plate, these spring sections just are arranged to deform so.
The free end of these spring rings contacts brake shoe easily usually and provides lower spring speed to the small motion that brake shoe leaves support plate, contact brake shoe when the ancon of each spring ring is provided in brake shoe and leaves the bigger motion of support plate, make more rigidity of each ring, thereby higher spring speed is provided.
Preferably, this pressing clip is arranged to limit the possible motion that brake shoe leaves support plate.
This can finish through the following steps: a bonding point is set on clip comes such engage brake watt web, make pressing clip become firm significantly, and prevent that brake shoe from leaving the further motion of support plate, perhaps two-part of this clip itself can enter contact and make clip firm significantly, thereby the restriction brake shoe leaves the motion of support plate.
For example, the flange that forms on the central standing part of pressing clip can be arranged to contact the web of brake shoe, leaves the motion of support plate with the restriction brake shoe.Or the central standing part of pressing clip can is arranged to or contact to the flange on the free end of spring ring, and the contiguous ring centering that perhaps contacts each corresponding spring ring is entreated the stacked incline section of the attachment of standing part.
Pressing clip preferably includes the relevant groove that compresses pin of packing into, contact area around this groove has one, this district can be taper, sphere or rectangle, the part that the cooperatively interacts taper of the head that compresses pin that their contacts are relevant, spherical or rectangle.
The present invention also provides a kind of brake shoe hold down clip, this pressing clip comprises the central standing part and two outer spring parts of stretching out and being in contact with it to this relevant brake shoe that engage the relevant head that compresses pin, thereby make this standing part and its normally keep spaced relationship, if this spring section is configured to brake shoe and tends to move away relevant support plate, then just distortion of this spring section.
Referring now to accompanying drawing the present invention is only described as an example, in the accompanying drawing:
Fig. 1 is the planimetric map of a kind of utilization according to the drum brake of pressing clip of the present invention;
Cross section on the line A-A of Fig. 2 and 3 presentation graphs 1 represents that this pressing clip is in its low spring speed and higher spring speed position respectively;
The enlarged view of Figure 4 and 5 presentation graphs 2 and 3 pressing clip is in its low and higher speed position respectively;
The planimetric map of the pressing clip of Fig. 6 and 7 presentation graphs 4 and perspective view; And
Fig. 8～12 expressions embody the figure of the various alternative forms of pressing clip of the present invention.
Fig. 1～3 with reference to expression drum brake 10.Drum brake formula 10 has a pair of brake shoe 11 and 12 that is installed on the support plate 13.Brake shoe works to the fixing bonding point piece 14 of a contact brake shoe lower end 11a and 12a.The traditional wheel cylinder 15 that is installed on the support plate 13 is placed between the upper end 11b and 12b of brake shoe.
As traditional, when break did not drive, Returnning spring 16 and 17 worked between brake shoe and makes the brake shoe withdrawal.An automatic regulating lever 18 also acts between the brake shoe, can adjust the clearance between the bulging (not shown) of brake shoe and compounding practice when being in its break release position with convenient brake shoe automatically, thereby keeps the validity of break when the brake shoe abrasion.The suitable form of automatic regulating lever has been described among claimant's the patent EP 0538909.
Except break was used wheel cylinder 15 hydraulic operations, a hand brake bar 19 was also made pivot type rotation with pivot 20 on the downside of brake shoe 12.As traditional, a manual brake operation hawser (not shown) is attached on the lower end 19a of bar 19, make bar 19 make pivot type rotation in the direction of arrow B, cause the top 19b of hand brake bar to engage automatic regulating lever 18, thereby force this bar to shift to the right, as shown by arrow C, and thereby bring brake shoe into relevant brake drum contact, and also make brake shoe 12 engage these brake drums by reaction.
Up to the present the structure of this drum brake is conventional.
According to the present invention, brake shoe 11 and 12 is pressed on the support plate 13 by the pin 21 and 22 that compresses that has pressing clip 23 and 24 respectively, and pressing clip 23 and 24 is arranged between the web 25,26 of head 21a, the 22a of each holding pin and each brake shoe.This configuration can see from Fig. 2 the most easily that Fig. 2 also illustrates each the other end 21b, 22b that compresses pin and is bonded on below the support plate 13.
As being clearly shown that in Fig. 4～7, folder 24 (23 identical with folder) has a central standing part 30 that has a groove 31, pack into the relevant head 22a that compresses pin 22 and comprise a placing portion 32 that part is spherical of groove 31, the downside of the part sphere of the latter and head 22a is worked in coordination.Spring ring part 33 and 34 is stretched out from every end of central standing part 30 respectively, and their circular web parts 26 towards relevant brake shoe 12 are extended and are in contact with it.In the pressing clip configuration shown in Fig. 4～7, during the break normal running, the free end 35 of spring ring contacts relevant brake shoe web (seeing Fig. 2 and 4) with 36, make when the opposing brake shoe leaves the motion of support plate, and spring ring 33 and 34 is with lower spring speed operation.Each spring ring 33,34 also comprises ancon 37,38 respectively, and ancon 37,38 leaves at brake shoe under the big displacement of support plate with relevant brake shoe 12 and contacts (as shown in Fig. 3 and 5).Ancon 37 causes ring 33 and 34 that higher spring speed is provided with 38 with this contact of brake shoe.This higher spring speed is effective especially when the opposing brake shoe leaves the motion of support plate under the higher dynamics state of some load, and this dynamics state is driven and when hand brake function and service braking function are provided simultaneously during maybe when the violent braking action of generation when brake shoe.
Each spring ring also is provided with flange 39 and 40 at its free end, (see figure 4) was set to contact respectively the lower portion 41 and 42 of central standing part 30 when they left the height motion of support plate at brake shoe, thereby higher spring speed was provided when in fact this folder becomes steady status and prevents that brake shoe from leaving any further motion of support plate.
Another advantage of clip of the present invention is folder point 23a and the platform 11a of 24a (see figure 1) bonding point brake shoe and the downside of 12a of clip, thereby prevents clip to be projected into outside the relevant brake shoe and contact with the parts (as the mounting rod of associated wheel) of any rotation.
Fig. 8,9,10,11 is the alternative form of expression pressing clip further.
Among Fig. 8, this compresses and accompanies a central standing part 50, and this standing part 50 also comprises a curvature portion spherical sealing element 52 and a groove 51.Folder shown in Fig. 8 does not have the ancon 37 and 38 shown in the folder of Fig. 4～7, but has respectively towards the linear substantially section 57 and 58 at the two ends of the ring 53 of folder and 54.This folder can be settled like this, make under normal load condition, only the free end 55 of ring contacts relevant brake shoe with 56, and when brake shoe moves away support plate, the little by little more linear segment 57,58 of each corresponding ring enters and the contacting of brake shoe, thereby increases the rigidity of clip.The motion that brake shoe leaves support plate may be subjected to the restriction of flange 59 and 60, flange 59 and 60 stretches out from central standing part 50, and they are designed to, if brake shoe departs from support plate far enough, their just contact the web of relevant brake shoe so, thereby make this clip firm significantly.
In the configuration of clip shown in Figure 9, central authorities' standing part 70 has respectively from its ring that stretches out 73 and 74, has the ring free end that forms branch yoke 75 and 76 respectively, each divides yoke that flange 79,80 is arranged respectively, their finally contact the downside of this standing part 70 and make clip firm, thereby the restriction brake shoe moves away support plate.Be appreciated that, the clip that does not go out among Fig. 9 also is arranged in the relevant brake shoe that only contacts adjacent arms 75 and 76 free end under the normal braking operation state, and when brake shoe tends to move away support plate, the point of contact of two arms is moved further and leaves its free end, thereby the rigidity on spring ring 73 and 74 is provided.Also can become to allow flange 79,80 contact with each other this clip design, further improve the rigidity of clip before firm significantly thereby become at clip.
Figure 10 represents a kind of clip configuration, and wherein the length of spring ring 73 and 74 (no matter as shown in Figure 9 bifurcated or bifurcated not) can be variable, makes flange 79 and 80 can plant oneself 79a, 79b, 79c and 80a, 80b, 80c.Be appreciated that 79a and 80a if flange plants oneself, they will form square bonding point with the downside of central standing part 70 so, and if flange plants oneself 80b, they will tend to contact the curved section 70a of central standing part 70 so.When being in outermost position 79c, 80c, flange may not contact the remaining part of clip, thereby can all move away other method of support plate as the front with reference to above-mentioned flange 59 and 60 described use restriction brake shoe.By selecting the position of flange 79 and 80, have variation in total spring speed of clip of deflection and can be adjusted and provide required characteristic.
In the another kind of alternative form of pressing clip shown in Figure 11, this clip has a central standing part 90, the flange 92 that the latter has a groove 91 and rotates from an edge of middle body 90.This flange and the big flange 99 that upwards rotates and 100 are in the combination of the free end place of ring 93 and 94 and a firm chock is provided, and limit the motion that relevant brake shoe and the flange 92 of this relevant brake shoe web of contact and the flange 99,100 that contacts central standing part 90 downsides leave support plate together.
The clip configuration of Fig. 8～11 also can comprise for example any configuration of determining shown in 37 and 38 places in Fig. 7.
Figure 12 illustrates another form of pressing clip, and wherein central standing part 100 has the groove 101 of rectangle substantially, and the traditional T shape head 22c that compresses pin 22 can insert by this groove.Compress pin head 22c then and rotate 90 degree, make T shape head fall into rectangular recess 102 with respect to groove 101.The shape of the remaining part of this pressing clip is similar to folder 24, and ring 103 and 104, ancon 107 and 108 and flange 109 and 110 are arranged.
Be appreciated that above-mentioned pressing clip configuration with its nonlinear spring characteristic provides a kind of simple and effective solution for the problem of the serviceability of the variation of the spring performance coupling break that makes this pressing clip.The essential level of controlling that provides brake shoe to move during the break normal running at one is provided the lower spring speed of pressing clip, and higher spring rate action control may be applied to the much higher motivation level on the brake shoe constantly.After brake shoe and support plate move a prearranging quatity, make the firm significantly clip design of clip provide brake shoe move even more accurate control.
The configuration of above-mentioned pressing clip is applicable to all types of drum brakes, and no matter it is hydraulic operation and/or mechanically actuated or electric operating.
The general dicyclo circle folder configuration that the ring of above-mentioned wherein clip stretches out from the opposite ends of central standing part can be used for a clip that does not have the nonlinear spring characteristic.For example, in the configuration shown in Fig. 8, linear segments 57 and 58 can be configured to free and relevant brake shoe comprehensive engagement, so all of brake shoe of being left support plate by ring 53 and 54 pairs move the spring speed that provides single.Equally, in the configuration shown in Fig. 9,10,11, corresponding to the linear segments 57 of Fig. 8 and 58 clip portion can be designed to if having time with relevant brake shoe comprehensive engagement, thereby single spring speed is provided.
Claims (14)
1. brake shoe hold down clip, its shape can provide a kind of nonlinear spring to be used for resisting the motion that brake shoe leaves support plate, and this compresses to accompany and a kind ofly resists lower spring speed and a kind of this brake shoe of response that becomes that brake shoe leaves the small movements of this support plate and leave the bigger motion of this support plate and the higher spring speed of operating.
2. clip according to claim 1, it is characterized in that, this clip comprises a spring ring, this spring ring has end of this ring and the farther ring part from this end, the end of this ring is designed to contact so that lower spring speed to be provided with this brake shoe, and this farther ring partly is designed to contact with this brake shoe so that this ring rigidity is more left the bigger motion of this support plate and higher speed is provided thereby respond this brake shoe from this end.
3. clip according to claim 2, it is characterized in that, this clip comprises the central standing part and two the outer spring ring parts of stretching out from each end of this central authorities' standing part that engage this relevant head that compresses pin, these rings part is stretched out and is in contact with it to this relevant brake shoe, thereby normally keep this standing part, concern at interval with it, tend to move apart the just distortion of this relevant support plate if these spring sections are configured to this brake shoe.
4. one kind comprises a central standing part and two outer springs brake shoe hold down clip partly, this central authorities' standing part engages this relevant head that compresses pin, and this two outer springs part is stretched out and is in contact with it to this relevant brake shoe, thereby normally keep this standing part and its to concern at interval, tend to move apart the just distortion of this relevant support plate if these spring sections are configured to this brake shoe.
5. clip according to claim 3 or 4, it is characterized in that, the free end of this spring coil normally contacts this brake shoe, and provide lower spring speed to the small movements that this brake shoe leaves this support plate, the ancon of each spring ring is provided in and contacts this brake shoe when this brake shoe leaves the bigger motion of this support plate and make more rigidity of each ring, thereby higher spring speed is provided.
6. one kind according to any one clip in the claim 1～5, it is characterized in that this pressing clip is configured to limit the possible motion that this brake shoe leaves this support plate.
7. the clip according to claim 6 is characterized in that, a bonding point is set on this clip engages this brake shoe web like this, makes this clip become significantly firmly, and prevents that this brake shoe from further leaving the motion of this support plate.
8. the clip according to claim 7 is characterized in that, some flanges that form on the central standing part of this clip contact this brake shoe web and limit the motion that this brake shoe leaves this support plate.
9. the clip according to claim 6 is characterized in that, two parts of this clip enter contact and that this clip is become is firm significantly, thereby limits the motion that this brake shoe leaves this support plate.
10. clip according to claim 9, it is characterized in that, some flanges on the free end of this spring ring are configured to or contact the central standing part of this pressing clip, or contact the stacked incline section of the attachment part that is adjacent to ring and this central authorities' standing part of each corresponding spring ring.
11. one kind according to any one clip in the claim 1～10, it is characterized in that, the groove that comprises this relevant head that compresses pin of packing into, contact area around this groove has one, this contact area can be taper, sphere or rectangle, and this contact area contacts a taper, the position of working in coordination spherical or rectangle of this relevant head that compresses pin.
12. one kind according to any one clip in the claim 1～10, it is characterized in that this spring ring is configured to contact the platform downside of this relevant brake shoe, is projected into position outside this relevant brake shoe to avoid this clip to turn to this clip.
13. a drum brake has a brake shoe that compresses this support plate by the pressing clip of any one in the claim 1～12.
14. a brake shoe hold down clip, its structure and the configuration basically as described in top Fig. 1～7 or 8 or 9 or 10 or 11 or 12 with reference to the accompanying drawings and shown in.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0403091A GB0403091D0 (en) | 2004-02-12 | 2004-02-12 | Brake shoe hold down clip |
| GB0403091.2 | 2004-02-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1918397A true CN1918397A (en) | 2007-02-21 |
Family
ID=32011768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005800048141A Pending CN1918397A (en) | 2004-02-12 | 2005-01-07 | Brake shoe hold down clip |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1714047A2 (en) |
| JP (1) | JP2007522413A (en) |
| CN (1) | CN1918397A (en) |
| GB (2) | GB0403091D0 (en) |
| WO (1) | WO2005085668A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111247352A (en) * | 2017-09-29 | 2020-06-05 | 大陆-特韦斯股份有限公司 | Drum brake |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112405029B (en) * | 2020-11-12 | 2023-04-14 | 重庆市轩业商贸有限公司 | Clamp tool for machining outer circle and two side end faces of brake shoe |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2263949A (en) * | 1940-08-03 | 1941-11-25 | Budd Wheel Co | Brake |
| US2320302A (en) | 1943-02-19 | 1943-05-25 | Robins Adolf | Mechanical display device |
| FR1109268A (en) * | 1954-07-22 | 1956-01-24 | Bendix Aviat Corp | Device for maintaining the relative position of two members, designed more particularly with a view to its application to the brakes |
| US3152664A (en) * | 1963-01-18 | 1964-10-13 | Kelsey Hayes Co | Hold-down device for brake shoes |
| FR1378754A (en) * | 1964-01-07 | 1964-11-13 | Bendix Corp | Elastic retainer for drum brake shoes |
| US3998303A (en) * | 1976-02-23 | 1976-12-21 | General Motors Corporation | Shoe hold down retainer for drum brakes |
| JPS5926811B2 (en) | 1977-06-30 | 1984-06-30 | トヨタ自動車株式会社 | Spring assembly for internally expanding brakes |
| US4623050A (en) * | 1985-09-03 | 1986-11-18 | General Motors Corporation | Shoe hold-down pin and spring clip |
| US4869352A (en) * | 1988-09-22 | 1989-09-26 | Eaton Corporation | Brake shoe guide member and brake using same |
-
2004
- 2004-02-12 GB GB0403091A patent/GB0403091D0/en not_active Ceased
-
2005
- 2005-01-07 CN CNA2005800048141A patent/CN1918397A/en active Pending
- 2005-01-07 EP EP05702200A patent/EP1714047A2/en not_active Withdrawn
- 2005-01-07 GB GB0615024A patent/GB2424459B/en not_active Expired - Fee Related
- 2005-01-07 JP JP2006552705A patent/JP2007522413A/en not_active Withdrawn
- 2005-01-07 WO PCT/IB2005/000029 patent/WO2005085668A2/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111247352A (en) * | 2017-09-29 | 2020-06-05 | 大陆-特韦斯股份有限公司 | Drum brake |
| US11578772B2 (en) | 2017-09-29 | 2023-02-14 | Continental Teves Ag & Co. Ohg | Drum brake |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0403091D0 (en) | 2004-03-17 |
| GB2424459B (en) | 2007-12-12 |
| GB2424459A (en) | 2006-09-27 |
| GB0615024D0 (en) | 2006-09-06 |
| WO2005085668A3 (en) | 2006-10-12 |
| JP2007522413A (en) | 2007-08-09 |
| WO2005085668A2 (en) | 2005-09-15 |
| EP1714047A2 (en) | 2006-10-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69934729T2 (en) | Precision sensor of a hydraulic cylinder | |
| CN101681182B (en) | Pedal-operated device | |
| CN1262725A (en) | Brake calliper with wear compensation | |
| CN1494390A (en) | Universal ergonomic support with self-contained actuator | |
| MX2014011179A (en) | Catch device in a lift system. | |
| US20070029145A1 (en) | Wheel brake caliper | |
| CN1918397A (en) | Brake shoe hold down clip | |
| CN102734357A (en) | A brake adjuster mechanism | |
| US20140251064A9 (en) | Brake pedal assembly having non-contacting sensor | |
| CN1040245C (en) | Mechanical actuator, especially for motor vehicle brakes | |
| US4889007A (en) | Adjusting device for a vehicle parking brake | |
| CN109281968A (en) | Stepless transmission brake gear | |
| CN1171758C (en) | Speed variable operating mechanism for speed variator of bicycle | |
| EP2078658A1 (en) | Disc brake | |
| JP2001132772A (en) | Release device especially for clutch | |
| US20050166703A1 (en) | Variable rate control pedal | |
| JP4358346B2 (en) | Release device especially for clutch | |
| CN101460759B (en) | Drum brakes | |
| CN1668860A (en) | Park brake for a disc brake system and disc brake system incorporating same | |
| DE1480060A1 (en) | Self-amplifying disc brake, especially for motor vehicles | |
| CN101160476B (en) | Drum brake | |
| CN1676964A (en) | Mechanical disk type brake | |
| CN209146186U (en) | Brake caliper, brake apparatus, braking system and vehicle | |
| CN1143789C (en) | Self-centring brake device | |
| CN1198302C (en) | Switch, especially motor vehicle brake-light switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |