CN104196929A - Worm and inclined-worm-gear-disc type electronic parking brake - Google Patents
Worm and inclined-worm-gear-disc type electronic parking brake Download PDFInfo
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- CN104196929A CN104196929A CN201410417881.7A CN201410417881A CN104196929A CN 104196929 A CN104196929 A CN 104196929A CN 201410417881 A CN201410417881 A CN 201410417881A CN 104196929 A CN104196929 A CN 104196929A
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Abstract
The invention discloses a worm and inclined-worm-gear-disc type electronic parking brake which comprises an actuating device and a brake caliper assembly. The actuating device comprises a shell fixed to a brake caliper of the brake caliper assembly, and a worm and inclined-worm-gear transmission mechanism is installed in the shell. The symmetrical center line of a worm gear of an inclined worm gear disc is deflected by a certain angle relative to the axis of a worm gear shaft, and the outer end of the worm gear shaft is inserted into the brake caliper. A driving motor is installed on one side of the shell and connected with one end of a worm, an adjustment screw is fixed in a screw hole in the outer side of the shell through a locking nut, the inner end of the adjustment screw abuts against the upper portion of the inner end face of the inclined worm gear disc, and the adjustment screw is used for transmitting reactive force of the transmission mechanism. The worm and inclined-worm-gear-disc type electronic parking brake has the advantages that physical output of a driver can be reduced, a vehicle parking brake system can be simplified, the gap self-regulation function, the speed-reduction and torque-increasing functions, the movement conversion function and the mechanical reverse self-locking function can be achieved, and electric power consumed during long-time parking can be reduced; in addition, the transformation machining cost is low, and the manufacturing-process succession performance and the technological-process succession performance are good.
Description
Technical field
The present invention relates to the actuator in a kind of park braking system for automobile, or rather, the particularly oblique worm gear disc type of a kind of worm screw electric parking brake.
Background technique
Conventional truck parking braking system is mainly implemented parking braking by the form of parking brake handle grip control machinery drag-line at present, although simple in structure, cost is low, but exist many shortcomings, for example consume driver's muscle power, uphill starting complex operation, be difficult to realize clearance self-regulating, Security is lower.Along with the development of automotive electronic technology, there is X-by-wire on Automobile in field of automobile control, and then occurred Automotive By-Wire Control Technology.Electronic brake system EPB (Electric Park Brake) is a class of Automotive By-Wire Control Technology.
Electronic brake system EPB is mainly made up of electric parking brake and electronic control unit.Wherein electric parking brake the stability of rotation of motor be converted into the translation of brake slipper, can slow down to increase and turn round the brake clearance that auto-compensation produces due to long-term work simultaneously, and volume is little, compact structure, it is very important constituent element in whole electronic brake system EPB.
Existing electric parking brake generally comprises the parts such as direct current generator, driving mechanism (being generally made up of reducing gear and movement conversion mechanism), brake calipers and brake disc.The solution of reducing gear is more at present, has the planetary gear reducing mechanism of Tian He company of the U.S. abroad, the domestic few teeth difference compound planet gear mechanism that has the dynamo-electric Co., Ltd in Asia-Pacific, Zhejiang.The current kind of movement conversion mechanism is less, is generally ball screw, bolt and nut mechanism.
Summary of the invention
The object of this invention is to provide the oblique worm gear disc type of a kind of worm screw electric parking brake, this break can realize clearance self-regulating, slow down increase turn round, motion conversion function and mechanical reverse auto-lock function, further goal of the invention is to reduce driver's physical output, simplify park braking system for automobile, power consumption can reduce long-time parking time, and transformation processing cost is low, and manufacture process and technological process inheritance are good.
For achieving the above object, the present invention adopts following technological scheme:
The oblique worm gear disc type of a kind of worm screw electric parking brake, comprises actuation gear and brake caliper assy, and described actuation gear comprises:
Housing, is fixed on the braking clamp body of brake caliper assy away from brake slipper one end;
Driving mechanism, is arranged in housing for promoting brake caliper assy action;
Worm screw, is arranged on housing by the bearing support at its two ends, and worm screw main body is positioned at housing;
Tiltedly worm gear, formed by worm-wheel shaft and oblique worm gear dish, tiltedly worm gear dish is positioned at housing and bottom and worm meshing, and tiltedly the worm wheel symmetrical center line of worm gear dish is with respect to the axis tilt several angle α of worm-wheel shaft, for realize moving axially of oblique worm gear under the support of adjusting screw; Worm-wheel shaft outer end is inserted in the braking clamp body of brake caliper assy, promotes to be positioned in brake caliper assy the brake slipper action on brake disc right side for transferring power;
Drive motor, is arranged on housing one side by a motor cover for seat, and is connected with worm screw one end, moves for drive transmission device;
Described adjusting screw screws in hull outside one screw and fixes by lock-nut, adjusting screw the inner leans the interior edge face top of described oblique worm gear dish, for transmitting the reaction force of driving mechanism, thereby promotes the braking clamp body of brake caliper assy and the brake slipper that is positioned on the left of brake disc moves by housing.
As further preferred, the deflection angle α between worm wheel symmetrical center line and the worm-wheel shaft axis of described oblique worm gear dish is 5-10 degree.
As further preferably, described drive motor is DC servo motor and is fixed in motor cover for seat by a retaining washer, and drive motor output shaft inserts worm screw one end and also connects by key.
As further preferably, on described housing, be symmetrically installed with two setting sleeves by interference fit, described housing and described braking clamp body are located by setting sleeve and are affixed by running through the attachment bolt of setting sleeve.
As further preferred, described brake caliper assy comprises braking clamp body, brake-caliper support, two brake slipper, piston and clearance self-regulating mechanisms, described braking clamp body is symmetrically fixed with two guide fingers by clamping bolt, and pegs graft by guide finger and brake-caliper support; Described two brake slipper are stuck on brake-caliper support by stopper spring respectively and are positioned at brake disc both sides; Described piston and clearance self-regulating mechanism are located in the cavity part of braking clamp body, the brake slipper of homonymy is close in described piston exterior edge face, piston is connected with the cavity part inner end of braking clamp body by clearance self-regulating mechanism, in the cavity part of described worm-wheel shaft outer end insertion braking clamp body and successively, is realized and being braked by clearance self-regulating mechanism and piston promotion brake slipper.
As further preferably, be provided with one at the cavity part inwall of described braking clamp body and be enclosed within the piston packing on piston outer wall by interference fit, to reset after auxiliary piston braking.
As further preferred, described clearance self-regulating mechanism comprises the self-regulated nut assembly and the self-regulated screw arbor assembly that are threaded connection.
As further preferred, described self-regulated nut assembly comprises self-regulated nut, on self-regulated nut, be set with successively thrust ball bearing, two colored shape sheet, waveform elastic sheet and self-regulated nut back-up rings that structure is identical, described self-regulated nut assembly is stuck in piston by self-regulated nut back-up ring.
As further preferred, described self-regulated screw arbor assembly comprises self-regulated screw rod, self-regulated screw rod one end screws in self-regulated nut, be respectively installed with pressure spring, spring shield and copper backing at the self-regulated screw rod the other end, described spring shield is enclosed within the outside of pressure spring and is stuck in the cavity part inner end of described braking clamp body by circlip, and described worm-wheel shaft outer end is inserted in the cavity part of described braking clamp body and leans self-regulated screw rod by copper backing.
As further preferred, in the cavity part external port of described braking clamp body, be provided with successively the O RunddichtringO, spacer and the bellows that are enclosed within on worm-wheel shaft, described bellows outer end protrude from the cavity part external port of braking clamp body and with oblique worm gear dish end contact.
The invention has the beneficial effects as follows:
1, the oblique worm gear disc type of worm screw of the present invention electric parking brake makes parking brake handle grip replaced, simplified further with respect to conventional truck parking braking system control gear, save cab space, the physical output while having reduced driver's parking.
2, owing to adopting worm screw oblique worm gear engagement transmission mechanism, therefore compact structure, velocity ratio are large, and can realize slowing down to increase simultaneously and turn round function and motion conversion function, are converted to the translation of worm-wheel shaft by the rotation of worm gear, and stable drive is reliable.
3, owing to adopting the oblique worm gear engagement transmission mechanism of worm screw, therefore can realize mechanical reverse self-locking, therefore power consumption when long-time parking can be reduced.
4, due to the present invention be original with the disk brake assembly basis of parking and braking mechanism on improve design, therefore there is clearance self-regulating function, and transformation processing cost low, manufacture process and technological process inheritance are good.
Brief description of the drawings
Fig. 1 is structure sectional view of the present invention.
Fig. 2 is the A-A partial sectional view of Fig. 1.
Fig. 3 is the decomposing type axonometric projection graph of actuation gear of the present invention and brake caliper assy position relationship.
Fig. 4 is the decomposing type axonometric projection graph of actuation gear structure composition of the present invention.
Fig. 5 is the decomposing type axonometric projection graph of the oblique Worm wheel transmission mechanism of worm screw of the present invention.
Fig. 6 is the decomposing type axonometric projection graph of brake caliper assy of the present invention.
In figure: braking clamp body 1, caliper part 101, cavity part 102, brake slipper 2, brake disc 3, piston dust cover 4, piston 5, piston packing 6, self-regulated nut 7, thrust ball bearing 8, flower shape sheet 9, waveform elastic sheet 10, self-regulated nut back-up ring 11, self-regulated screw rod 12, big disk 1201, spring shield 13, notch 1301, pressure spring 14, copper backing 15, O RunddichtringO 16, bellows 17, tiltedly worm gear 18, tiltedly worm gear dish 1801, worm-wheel shaft 1802, housing 19, lock-nut 20, adjusting screw 21, spacer 22, worm screw 23, circlip 24, bearing support 25, bearing sealed ring 26, bearing 27, motor cover for seat 28, drive motor 29, anti-vibration sleeve 30, retaining washer 31, brake caliper assy 32, actuation gear 33, setting sleeve 34, attachment bolt 35, guide finger 36, brake-caliper support 37, screw 38, bolt 39, stopper spring 40, clamping bolt 41.
Embodiment
As Figure 1-Figure 5, the oblique worm gear disc type of a kind of worm screw electric parking brake involved in the present invention, comprises actuation gear 33 and brake caliper assy 32.Described actuation gear 33 comprises a housing 19, and the driving mechanism moving for promoting brake caliper assy 32 is installed in housing 19, is provided with drive motor 29 in housing 19 1 sides, is provided with adjusting screw 21 on housing 19.
Described housing 19 is integrative-structures that the hollow box body uncovered by one side and the Special-shaped flange that is located at the uncovered side of casing form, housing 19 is fixed on the braking clamp body 1 of brake caliper assy 32 away from brake slipper 2 one end, on the Special-shaped flange of described housing 19, be installed with two setting sleeves 34 by interference fit symmetry, described housing 19 is located by setting sleeve 34 with described braking clamp body 1 and is affixed by running through the attachment bolt 35 of setting sleeve 34.Described driving mechanism comprises a worm screw 23 and oblique worm gear 18, described worm screw 23 two ends are run through and are arranged on the interior bottom of housing 19 by bearing support 25 and bearing 27 respectively, worm screw 23 main bodys are positioned at housing 19, bearing support 25 inserts and is fixed on by bolt 39 respectively the forward and backward both sides of housing 19, and bearing 27 outsides that are positioned at bearing support 25 at worm screw 23 two ends are respectively installed with bearing sealed ring 26.Described oblique worm gear 18 is to be made up of the worm-wheel shaft 1802 being connected as a single entity and oblique worm gear dish 1801, oblique worm gear dish 1801 is positioned at housing 19 and engage with worm screw 23 bottom, tiltedly the worm wheel symmetrical center line of worm gear dish 1801 is with respect to the axis tilt several angle α of worm-wheel shaft 1802, as preferably, the deflection angle α between the worm wheel symmetrical center line of described oblique worm gear dish 1801 and worm-wheel shaft 1802 axis is 5-10 degree.The cylindrical boss that is provided with an one in oblique worm gear dish 1801 outer ends, the exterior edge face of cylindrical boss is vertical plane.Tiltedly worm gear dish 1801 all adopts evolvent type structure with the profile of tooth of worm screw 23, and tiltedly worm gear dish 1801 equates with normal module and the Normal pressure angle of worm screw 23, the angle of lead of worm screw 23 equates with the helix angle of oblique worm gear dish 1801, the rotation direction of worm screw 23 is identical with the rotation direction of oblique worm gear dish 1801, and the transverse module of worm screw 23 equates with the transverse module of oblique worm gear dish 1801.In addition owing to there is differential seat angle with the spin axis of its worm-wheel shaft 1802 in the oblique worm wheel symmetrical center line of worm gear dish 1801, therefore worm screw 23 center lines not at oblique worm gear dish 1801 along on the middle separated time of facewidth direction.
Described drive motor 29 is by a motor cover for seat 28 and be bolted on the bearing support 25 of housing 19 1 sides, and be coaxially connected with worm screw 23 one end, described drive motor 29 is DC servo motor and is fixed in motor cover for seat 28 by a retaining washer 31 and screw 38, drive motor 29 output shafts insert in worm screw 23 one end center holes and connect by key, move for drive transmission device.Between motor cover for seat 28 the inners and drive motor 29, be provided with anti-vibration sleeve 30, to protect motor.
Described adjusting screw 21 screws in housing 19 outer upper one screws and by lock-nut 20 and fixes, in housing 19 outsides, corresponding described screw place is provided with a counter sink, adjusting screw 21 is positioned at counter sink and the inner is that semicircle is spherical, it screws in housing 19 and leans the interior edge face top of described oblique worm gear dish 1801, by the axial mounting point of the adjustable adjusting screw 21 of lock-nut 20, for transmitting the reaction force of driving mechanism, thereby the brake slipper 2 that is promoted the braking clamp body 1 of brake caliper assy 32 and be positioned at brake disc 3 left sides by housing 19 moves.
As shown in Fig. 1, Fig. 3 and Fig. 6, the floating caliper brake that described brake caliper assy 32 generally adopts for existing car, it can double as parking braking actuator in as service brake actuator.Described brake caliper assy 32 comprises braking clamp body 1, brake-caliper support 37, two brake slipper 2, piston 5 and clearance self-regulating mechanisms.Two bolts hole that wherein brake-caliper support 37 passes its both sides, lower end by bolt are fixed on the knuckle of wheel steering system, described braking clamp body 1 is by a caliper part 101 and an integral structure that cavity part 102 forms, caliper part 101 both sides of braking clamp body 1 upper end are symmetrically fixed with two guide fingers 36 by clamping bolt 41, and insert respectively in jack corresponding to two of 37 upper ends of brake-caliper support and for being slidably matched by guide finger 36, braking clamp body 1 can be slid axially along guide finger 36.Described two brake slipper 2 are stuck on brake-caliper support 37 by stopper spring 40 respectively and are positioned at brake disc 3 both sides, brake slipper 2 can be moved axially but play up and down, in the caliper part 101 of described braking clamp body 1, corresponding brake slipper 2 one end are provided with the trapezoid boss of one and are attached to brake slipper 2 outsides that are positioned at brake disc 3 left sides by trapezoid boss.Described piston 5 and clearance self-regulating mechanism are located in the cavity part 102 of braking clamp body 1, the brake slipper 2 of homonymy is close in described piston 5 exterior edge faces, piston 5 is connected with cavity part 102 inner ends of braking clamp body 1 by clearance self-regulating mechanism, in the cavity part 102 of described worm-wheel shaft 1802 outer ends insertion braking clamp bodies 1 and successively, promotes brake slipper 2 realization brakings by clearance self-regulating mechanism and piston 5.
As shown in Figure 1, cavity part 102 inwalls at described braking clamp body 1 are provided with two annular grooves near its inner port place, in described two annular grooves, piston packing 6 and piston dust cover 4 are housed respectively, described piston packing 6 is enclosed within on piston 5 outer walls by interference fit, to help rear reset of piston 5 brakings.Described piston dust cover 4 is made and is positioned at piston packing 6 outsides and is stuck in piston 5 outer ends for rubber material.
As shown in Fig. 1 and Fig. 6, described clearance self-regulating mechanism comprises the self-regulated nut assembly and the self-regulated screw arbor assembly that are threaded connection.Described self-regulated nut assembly comprises a self-regulated nut 7, self-regulated nut 7 outer walls are the cylindrical section external diameter that stepped cylindrical body and the annular boss diameter that is positioned at middle part are greater than its both sides, on the annular boss shaft shoulder of self-regulated nut 7, be along the circumferential direction evenly equipped with six through holes, so that brake fluid when service brake flows.The annular boss outside that is positioned at portion wherein on self-regulated nut 7 is set with thrust ball bearing 8, two the colored shape sheets 9 that structure is identical, waveform elastic sheet 10 and self-regulated nut back-up rings 11 successively, described waveform elastic sheet 10 is clipped between two colored shape sheets 9, described self-regulated nut assembly is stuck in the shoulder hole of piston 5 by self-regulated nut back-up ring 11, the annular boss of self-regulated nut 7 and piston 5 endoporus ladder cards along between be processed with the conical surface cooperatively interacting, to guarantee that the axial motion of self-regulated nut 7 is passed to piston 5.
Described colored shape sheet 9 is an along the circumferential direction uniform annular flake that processes six grooves, thereby can play the power that the self-regulated nut back-up ring 11 that is stuck in piston 5 inside grooves is subject to and pass to waveform elastic sheet 10 and self-regulated nut 7, while not hindering service brake again, hydraulic oil flows.Described waveform elastic sheet 10 is an annular flake and stamps out a circle circular arc projection, can produce axial deformation.
Described self-regulated screw arbor assembly comprises self-regulated screw rod 12, self-regulated screw rod 12 one end are processed with outside thread and screw in self-regulated nut 7, be respectively installed with pressure spring 14 at self-regulated screw rod 12 the other ends, spring shield 13 and copper backing 15, described spring shield 13 is cup tubular the outside that is enclosed within pressure spring 14, the cup of spring shield 13 is stuck in cavity part 102 inner ends of described braking clamp body 1 by circlip 24 along one end, be provided with the big disk 1201 of one at the other end of described self-regulated screw rod 12, described big disk 1201 inserts in spring shield 13 and is located at boss in its outer rim by symmetry and snaps in cup that symmetry is located at spring shield 13 along in the notch 1301 on the barrel of one end, the length of described notch 1301 is greater than the thickness of described boss, described pressure spring 14 is stuck at the cup end and described big disk 1201 of spring shield 13.Described copper backing 15 is enclosed within the central shaft heads of described self-regulated screw rod 12 the other ends, described worm-wheel shaft 1802 outer ends are passed in the cavity part 102 that is inserted into described braking clamp body 1 and lean self-regulated screw rod 12 by copper backing 15 by housing 19, move for the brake slipper 2 that is positioned at brake disc 3 right sides in transferring power promotion brake caliper assy 32.
As shown in Figure 1, in cavity part 102 external port of described braking clamp body 1, be provided with successively for being enclosed within O RunddichtringO 16, spacer 22 and the bellows 17 on worm-wheel shaft 1802, described bellows 17 outer ends protrude from cavity part 102 external port of braking clamp body 1 the cylindrical boss end contact with oblique worm gear dish 1801, and described worm-wheel shaft 1802 outer ends lean on copper backing 15 through after bellows 17, spacer 22 and O RunddichtringO 16 successively.
Not when parking braking, worm screw 23 with the tooth mesh regional of oblique worm gear dish 1801 at worm screw 23 center line right-hand members.When parking braking, drive motor 29 drives worm screw 23 to rotate, worm screw 23 by with oblique worm gear dish 1801 engage transmission of torque give oblique worm gear dish 1801, due to the tiltedly inclination of worm gear dish 1801 symmetrical center line, therefore oblique worm gear dish 1801 is in its worm-wheel shaft 1802 axis rotations, under the contact of adjusting screw 21 is spacing, tiltedly worm gear dish 1801 will move axially left.Tiltedly the mesh regional of worm gear dish 1801 and worm screw 23 is also moved to the left along worm-wheel shaft 1802 line directions, and remains engagement driving.And then tiltedly worm gear dish 1801 promotes successively copper backing 15, self-regulated screw rod 12, self-regulated nut 7 and piston 5 by worm-wheel shaft 1802 and is moved to the left, the brake slipper 2 that finally promotes brake disc 3 right sides moves to left near brake disc 3; Simultaneously, because the worm wheel symmetrical center line of oblique worm gear dish 1801 is with respect to the axis tilt several angle of worm-wheel shaft 1802, therefore rotate and promote braking clamp body 1 by adjusting screw 21 simultaneously and move right at oblique worm gear dish 1801, and drive the brake slipper 2 that is positioned at brake disc 3 left sides to move to right near brake disc 3 by the trapezoid boss in described caliper part 101, thereby produce braking force.
When brake off, drive motor 29 reversions drive worm screw 23 to rotate backward, in like manner tiltedly worm gear dish 1801 moves right with worm screw 23 mesh regionals, tiltedly the worm-wheel shaft 1802 of worm gear 18 no longer promotes clearance self-regulating mechanism, and then under the effect of pressure spring 14, make the clearance self-regulating mechanism reset that moves to right, in the time of self-regulated nut 7 return, can play buffer shock-absorbing effect by waveform elastic sheet 10, thereby reduce noise; Be positioned at piston packing 6 distortion in the time of braking on piston 5, now just restore to the original state, make piston 5 returns, brake caliper assy 32 brake offs, the brake slipper 2 that is positioned at brake disc 3 both sides resets respectively under the effect of stopper spring 40.Because general Disk Brake gap is probably 0.2mm, so tiltedly the worm wheel symmetrical center line in worm gear dish 1801 and the axis of its worm-wheel shaft 1802 differ 10 degree and rotate and be no more than 120 while spending at oblique worm gear dish 1801 with interior just can guarantee, the axial displacement of oblique worm gear dish 1801 just can meet brake request.
If brake slipper 2 wearing and tearing produce a small amount of excessive gaps in using process, while braking, piston 5 is by relative piston packing 6 slippage left one segment distance, because self-regulated nut assembly can not separate by being connected with piston 5, so now self-regulated nut 7 can relatively rotate the identical distance of reach with self-regulated screw rod 12 by screw thread under the effect of thrust ball bearing 8, thereby realizes the automatic adjustment of brake clearance.
Although embodiment of the present invention are open as above, but it is not restricted to listed utilization in specification and mode of execution, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend of describing.
Claims (10)
1. the oblique worm gear disc type of a worm screw electric parking brake, comprises actuation gear and brake caliper assy, it is characterized in that: described actuation gear comprises:
Housing, is fixed on the braking clamp body of brake caliper assy away from brake slipper one end;
Driving mechanism, is arranged in housing for promoting brake caliper assy action;
Worm screw, is arranged on housing by the bearing support at its two ends, and worm screw main body is positioned at housing;
Tiltedly worm gear, formed by worm-wheel shaft and oblique worm gear dish, tiltedly worm gear dish is positioned at housing and bottom and worm meshing, and tiltedly the worm wheel symmetrical center line of worm gear dish is with respect to the axis tilt several angle α of worm-wheel shaft, for realize moving axially of oblique worm gear under the support of adjusting screw; Worm-wheel shaft outer end is inserted in the braking clamp body of brake caliper assy, promotes to be positioned in brake caliper assy the brake slipper action on brake disc right side for transferring power;
Drive motor, is arranged on housing one side by a motor cover for seat, and is connected with worm screw one end, moves for drive transmission device;
Described adjusting screw screws in hull outside one screw and fixes by lock-nut, adjusting screw the inner leans the interior edge face top of described oblique worm gear dish, for transmitting the reaction force of driving mechanism, thereby promotes the braking clamp body of brake caliper assy and the brake slipper that is positioned on the left of brake disc moves by housing.
2. the oblique worm gear disc type of worm screw according to claim 1 electric parking brake, is characterized in that: the deflection angle α between worm wheel symmetrical center line and the worm-wheel shaft axis of described oblique worm gear dish is 5-10 degree.
3. the oblique worm gear disc type of worm screw according to claim 1 and 2 electric parking brake, it is characterized in that: described drive motor is DC servo motor and is fixed in motor cover for seat by a retaining washer, drive motor output shaft inserts worm screw one end and also connects by key.
4. the oblique worm gear disc type of worm screw according to claim 1 electric parking brake, it is characterized in that: on described housing, be symmetrically installed with two setting sleeves by interference fit, described housing and described braking clamp body are located by setting sleeve and be affixed by running through the attachment bolt of setting sleeve.
5. according to the oblique worm gear disc type of the worm screw described in claim 1 or 4 electric parking brake, it is characterized in that: described brake caliper assy comprises described braking clamp body, brake-caliper support, two brake slipper, piston and clearance self-regulating mechanisms, described braking clamp body is symmetrically fixed with two guide fingers by clamping bolt, and pegs graft by guide finger and brake-caliper support; Described two brake slipper are stuck on brake-caliper support by stopper spring respectively and are positioned at brake disc both sides; Described piston and clearance self-regulating mechanism are located in the cavity part of braking clamp body, the brake slipper of homonymy is close in described piston exterior edge face, piston is connected with the cavity part inner end of braking clamp body by clearance self-regulating mechanism, in the cavity part of described worm-wheel shaft outer end insertion braking clamp body and successively, is realized and being braked by clearance self-regulating mechanism and piston promotion brake slipper.
6. the oblique worm gear disc type of worm screw according to claim 5 electric parking brake, is characterized in that: be provided with one at the cavity part inwall of described braking clamp body and be enclosed within the piston packing on piston outer wall by interference fit, to reset after auxiliary piston braking.
7. according to the oblique worm gear disc type of the worm screw described in claim 5 or 6 electric parking brake, it is characterized in that: described clearance self-regulating mechanism comprises the self-regulated nut assembly and the self-regulated screw arbor assembly that are threaded connection.
8. the oblique worm gear disc type of worm screw according to claim 7 electric parking brake, it is characterized in that: described self-regulated nut assembly comprises self-regulated nut, on self-regulated nut, be set with successively thrust ball bearing, two colored shape sheet, waveform elastic sheet and self-regulated nut back-up rings that structure is identical, described self-regulated nut assembly is stuck in piston by self-regulated nut back-up ring.
9. according to the oblique worm gear disc type of the worm screw described in claim 7 or 8 electric parking brake, it is characterized in that: described self-regulated screw arbor assembly comprises self-regulated screw rod, self-regulated screw rod one end screws in self-regulated nut, be respectively installed with pressure spring, spring shield and copper backing at the self-regulated screw rod the other end, described spring shield is enclosed within the outside of pressure spring and is stuck in the cavity part inner end of described braking clamp body by circlip, and described worm-wheel shaft outer end is inserted in the cavity part of described braking clamp body and leans self-regulated screw rod by copper backing.
10. according to the oblique worm gear disc type of the worm screw described in claim 1 or 6 electric parking brake, it is characterized in that: in the cavity part external port of described braking clamp body, be provided with successively the O RunddichtringO, spacer and the bellows that are enclosed within on worm-wheel shaft, described bellows outer end protrude from the cavity part external port of braking clamp body and with oblique worm gear dish end contact.
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| CN201410417881.7A CN104196929B (en) | 2014-08-20 | 2014-08-20 | Worm and inclined-worm-gear-disc type electronic parking brake |
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| CN201410417881.7A CN104196929B (en) | 2014-08-20 | 2014-08-20 | Worm and inclined-worm-gear-disc type electronic parking brake |
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| CN104196929A true CN104196929A (en) | 2014-12-10 |
| CN104196929B CN104196929B (en) | 2017-01-25 |
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| CN104575239A (en) * | 2015-01-21 | 2015-04-29 | 重庆工商职业学院 | Automobile rear brake assembly teaching experiment device |
| CN104895966A (en) * | 2015-06-04 | 2015-09-09 | 广东中博汽车零部件有限公司 | Retainer ring with elastic presser feet for parking calipers |
| CN106438776A (en) * | 2016-11-04 | 2017-02-22 | 浙江力邦合信智能制动系统股份有限公司 | Brake caliper |
| CN107289043A (en) * | 2017-08-08 | 2017-10-24 | 吉林大学 | A kind of self-locking electro-mechanical brake apparatus |
| CN107804308A (en) * | 2017-11-23 | 2018-03-16 | 华南理工大学 | A kind of master cylinder and its braking method for taking into account parking and service brake |
| CN107882901A (en) * | 2017-12-27 | 2018-04-06 | 嘉兴盛鼎机械有限公司 | Brake chamber with self-locking halting mechanism |
| CN108430843A (en) * | 2015-11-13 | 2018-08-21 | 株式会社五十岚电机制作所 | Electric parking and braking device |
| CN108839646A (en) * | 2018-07-31 | 2018-11-20 | 浙江亚太机电股份有限公司 | New E PB parking structure |
| CN110864079A (en) * | 2019-12-13 | 2020-03-06 | 江苏徐工工程机械研究院有限公司 | Worm gear box for land leveler and land leveler |
| CN111631903A (en) * | 2020-05-27 | 2020-09-08 | 太原理工大学 | Torque output device based on force sensor feedback |
| CN111960310A (en) * | 2020-08-26 | 2020-11-20 | 安徽理工大学 | Braking device of mine hoist |
| CN112833119A (en) * | 2021-01-04 | 2021-05-25 | 中车青岛四方车辆研究所有限公司 | Manual parking relieving device and parking brake cylinder |
| CN112849109A (en) * | 2019-11-28 | 2021-05-28 | 比亚迪股份有限公司 | Braking system, vehicle and braking method |
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| CN110864079A (en) * | 2019-12-13 | 2020-03-06 | 江苏徐工工程机械研究院有限公司 | Worm gear box for land leveler and land leveler |
| CN111631903B (en) * | 2020-05-27 | 2022-01-28 | 太原理工大学 | Torque output device based on force sensor feedback |
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| CN112833119A (en) * | 2021-01-04 | 2021-05-25 | 中车青岛四方车辆研究所有限公司 | Manual parking relieving device and parking brake cylinder |
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