CN106438782A - Automobile braking gap automatic adjusting arm - Google Patents
Automobile braking gap automatic adjusting arm Download PDFInfo
- Publication number
- CN106438782A CN106438782A CN201611140721.8A CN201611140721A CN106438782A CN 106438782 A CN106438782 A CN 106438782A CN 201611140721 A CN201611140721 A CN 201611140721A CN 106438782 A CN106438782 A CN 106438782A
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- Prior art keywords
- worm screw
- clutch
- housing
- gear
- transmission shaft
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Classifications
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- 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
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/62—Slack adjusters mechanical self-acting in both directions for adjusting excessive and insufficient play
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention provides an automobile braking gap automatic adjusting arm, belongs to the technical field of automobile parts and solves the problem that existing adjusting arms are low in braking gap adjusting accuracy. The automobile braking gap automatic adjusting arm comprises a shell, a worm gear and a worm are arranged in the shell, the worm is rotatably connected in the shell and can move axially, a step face capable of being abutted against the inner wall of the shell when the shell is in forward rotation for braking is arranged on the worm, a clutch is arranged in the shell, a transmission shaft is rotatably connected in the shell, one end of the transmission shaft is connected with the clutch while the other end of the same is fixedly connected with one end of the worm peripherally, and an elastic structure capable of pushing the worm and enabling the step face of the worm to break away from the inner wall of the shell when the shell is in reverse rotation is arrange in the shell. The automobile braking gap automatic adjusting arm receives lower resistance during braking gap adjusting and is smoother in adjusting and higher in adjusting accuracy.
Description
Technical field
The invention belongs to technical field of automobile parts, is related to a kind of arm for adjusting automobile brake clearance automatically.
Background technology
Vehicle brake gap refers to friction pair in brake (brake drum and brake-shoe friction facing or brake disc and brake block
Friction facing) between the gap that must keep.Brake clearance can not be too small, can not be excessive, and brake clearance is too small, it is impossible to ensure
Thoroughly braking is released, easily cause brake and generate heat, friction facing premature abrasion, increase automobile fuel consumption, gap is excessive, can increase again
Plus the stroke of brake pedal, it is awkward, and extends the distance of braking.Friction facing due to brake has mill in friction
Damage, brake clearance can be increasing, and therefore automotive brake must have brake clearance adjustment apparatus.
As Chinese invention patent application (application number：200610025906.4) disclose a kind of vehicle brake gap and adjust automatically
Whole arm, including adjusting arm housing, located at adjusting in arm housing and engaging each other big worm gear together and big worm screw, in adjustment arm
In housing, one end of the big worm screw is provided with thrust spring, and the other end is provided with an one-way clutch, is provided with the end of big worm gear
One control arm, is fixed with ring gear, is provided with a small worm, small worm and list in described adjustment arm housing on described control arm
To the small gear engagement in clutch, one end of small worm is circumferentially fixed little gear, and little gear is mutually nibbled with described ring gear
Closing, spring is provided between little gear and small worm, leaves gap, the tune between the other end of small worm and adjustment arm housing
Whole arm is rotated backward come when releasing braking in housing, and ring gear can pass through small worm and clutch drives big worm screw to rotate, so as to
Big worm gear wheel set angle is driven, brake clearance adjustment is realized, wherein big worm screw rotational angle is little, the high precision of needs, but
It is that its end face is pressed in inner walls, and adjusts thrust spring in arm as in braking, big worm screw compresses thrust spring
Effect is that the end for making big worm screw is meshed with clutch, therefore starts the moment for rotating in big worm screw, and thrust spring can not
Timely big worm screw is pushed open, cause with larger frictional resistance between big worm screw and inner walls, so as to reduce big snail
The sensitivity of bar, affects the response speed of big worm screw, and further, as big worm screw one end is engaged with big worm gear, the other end is straight
Clutch is connect in succession, i.e., the part being connected with big worm screw is many, this also causes the frictional resistance that big worm screw is subject to become big, so as to enter
One step affects the sensitivity of big worm screw and corresponding speed, so as to reduce the precision of brake clearance adjustment.
Content of the invention
The purpose of the present invention is there are the problems referred to above for existing technology, it is proposed that a kind of vehicle brake gap is adjusted automatically
Whole arm, the resistance that the arm for adjusting automobile brake clearance automatically is subject to when brake clearance is adjusted is less, adjusts more smooth, regulation
Precision is higher.
The purpose of the present invention can be realized by following technical proposal：A kind of arm for adjusting automobile brake clearance automatically, including
Housing, is provided with the worm gear and worm screw being meshed in housing, and the worm screw is rotatably connected in housing, and worm screw axially can move
Dynamic, with the step surface that can be pressed on when housing is rotated forward and is braked in inner walls, the shell on the worm screw
Clutch is additionally provided with vivo, it is characterised in that the power transmission shaft being also rotatably connected in the housing with worm screw in the same direction, the power transmission shaft
One end be connected with clutch, one end circumference of the other end and worm screw is connected, and worm screw can be moved axially with respect to power transmission shaft,
Being additionally provided with the housing when housing is rotated backward pushing tow worm screw can make the step surface of worm screw depart from the bullet of inner walls
Property structure.
Worm gear is socket-connected with brake-toggle shaft, and housing is rotated forward with worm gear, can be to one while worm gear wheel
End pushing tow worm screw, worm screw elasticity of compression structure is mutually compressed with inner walls until the step surface of worm screw, and now worm gear is by braking
Rotating forward for device camshaft and realize braking, in the process due to clutch be in released state, therefore worm screw will not turn
Dynamic, when releasing braking, clutch is in bonding state, and housing is rotated backward with worm gear, and worm gear drives brake-toggle shaft anti-
To rotation, worm gear can be in the same direction and circumferentially fixed with worm screw by clutch drive drive axis, power transmission shaft in the process,
Therefore worm screw rotation is driven, and worm screw drives worm gear with respect to housing into rotation set angle, realizes the adjust automatically of brake clearance, due to
Worm gear is in counter-rotational beginning moment, and elastic construction can make the step surface of worm screw depart from inner walls in time, eliminate housing
The frictional resistance that inwall is produced to the step surface of worm screw so that the rotation response of worm screw is sensitiveer, smooth, worm screw drives worm gear
The precision of rotation is higher, while the end for comparing worm screw in more traditional adjustment arm is directly coupled with clutch, causes the axle being subject to
Big to moving resistance, in this adjustment arm, power transmission shaft is connected with clutch, and worm screw is only circumferentially fixed with power transmission shaft, and axial energy
Enough slide, therefore elastic construction being capable of more smoothly pushing tow worm screw so that the step surface of worm screw departs from inner walls in time, carries
Top adjustment precision.
In above-mentioned arm for adjusting automobile brake clearance automatically, support set in the housing, is fixed with, the one of the worm screw
End rotation is plugged in support set, and worm screw can relative support set slide axially, the end of the power transmission shaft passes through support set
And be connected with worm screw.Support set is used for positioning worm screw with the interconnective one end of power transmission shaft, it is ensured that power transmission shaft is same with worm screw
Axle degree, reduces frictional resistance when worm screw moves axially with respect to power transmission shaft.
In above-mentioned arm for adjusting automobile brake clearance automatically, the cross section of the power transmission shaft is polygon, the worm screw
End offer and transmission shape shaft be adapted spliced eye, the end of the power transmission shaft is plugged on the grafting in the hole of worm screw.
That is the cross section of power transmission shaft can be hexagon or square, and it is circumferentially fixed with worm screw to realize power transmission shaft, and axially can
Smoothly relative slip.
In above-mentioned arm for adjusting automobile brake clearance automatically, the elastic construction includes butterfly spring and ball-and-socket pad,
Installing hole is offered in the inner walls, and the other end of above-mentioned worm screw is plugged on installation in the hole, the butterfly spring and ball-and-socket
Pad is arranged on installation in the hole, and with the spherical butting section that protrudes to side on ball-and-socket pad, the butterfly spring is pressed on
On ball-and-socket pad side, the butting section of ball-and-socket pad is pressed on worm screw end face.The quantity of butterfly spring needs to set according to elastic force
Fixed, ball-and-socket pad is compressed with butterfly spring by side, good stability, is compressed with worm screw end face by spherical butting section, right
The frictional resistance of worm screw is little.
In above-mentioned arm for adjusting automobile brake clearance automatically, the elastic construction includes the polyurethane spring of column and ball
Nest pad, offers installing hole in the inner walls, the other end of above-mentioned worm screw is plugged on installation in the hole, the polyurethane bullet
Spring and ball-and-socket pad are arranged on installation in the hole, with the spherical butting section that protrudes to side, the polyurethane on ball-and-socket pad
Spring is pressed on ball-and-socket pad side, and the butting section of ball-and-socket pad is pressed on worm screw end face.In the same manner, ball-and-socket pad passes through side
Face is compressed with the end face of polyurethane spring, good stability, is compressed with worm screw end face by spherical butting section, the friction to worm screw
Resistance is little.
In above-mentioned arm for adjusting automobile brake clearance automatically, the clutch includes clutch gear, adjustment axis and makes
Clutch gear and the thrust spring of adjustment axis phase compression fit, are arranged with plane bearing one, the thrust bullet on the power transmission shaft
One end of spring is pressed on clutch gear, and the other end is pressed on the packing ring of plane bearing one.Clutch can realize with reference to and
Separate, in contact braking, the active force of thrust spring causes clutch gear mutually to compress combination with adjustment axis, now clutch gear
Rotation can pass to adjustment axis, and then pass to power transmission shaft, in rotation process, thrust spring is pressed on clutch gear,
Need to rotate with clutch gear, therefore the other end of thrust spring is pressed on the packing ring of plane bearing one, so as to reduce
The frictional resistance being subject to during thrust spring pivotal so that the rotation of power transmission shaft and worm screw is more smooth, and precision is higher.
In above-mentioned arm for adjusting automobile brake clearance automatically, the clutch also includes that one end is matched with clutch gear
Large helical gear is connected to, plane bearing two in the housing, is fixed with, the other end of the large helical gear can be pressed on plane
On the packing ring of bearing two.Large helical gear can be meshed with clutch gear, the rotation of worm gear is passed to clutch gear, wherein greatly
Helical gear teeth be helical teeth, therefore can be subject to axial thrust load while rotating in a circumferential direction so that the end of large helical gear with put down
The packing ring of spherical bearing two is mutually compressed, so as to reduce the frictional resistance that is subject to when large helical gear is rotated so that power transmission shaft and worm screw
Rotation is more smooth, and precision is higher.
In above-mentioned arm for adjusting automobile brake clearance automatically, on the end face of the support set, circumference has support convex edge,
Above-mentioned power transmission shaft is pressed on the end face for supporting convex edge through the retainer for supporting convex edge, the plane bearing one, the plane
Bearing two is set on support convex edge, and the retainer of plane bearing two is pressed on the end face of support set.I.e. support set except
Locating transmission axle and worm screw, additionally it is possible to the position of plane bearing one and plane bearing two is accurately positioned, so as to thrust
The holding of spring and large helical gear is more stable.
In above-mentioned arm for adjusting automobile brake clearance automatically, the adjustment axis are rotatably connected on housing, and adjustment axis
Circumferentially fixed with power transmission shaft, the clutch gear and large helical gear are all rotated and are set on power transmission shaft, and one end of clutch gear
In mating connection with large helical gear, in the presence of thrust spring, the other end of clutch gear can be mutually compressed admittedly with adjustment axis
Even.The rotation of worm gear passes to large helical gear, and large helical gear drives clutch gear rotation, and clutch gear drives adjustment axis rotation,
Adjustment axis drive drive axis, and then drive worm screw rotation, realize the adjustment in clutch gap.
In above-mentioned arm for adjusting automobile brake clearance automatically, the end of the adjustment axis has the clutch part one of plate-like,
The end face outer edge of the clutch part one has cone of friction one, the clutch part with annular on the end face of the clutch gear
Two, the inside edge of the clutch part two has cone of friction two, the cone of friction two of clutch part two in the presence of thrust spring
Can fit compression with the cone of friction one of clutch part one.Adjustment axis are with clutch gear by cone of friction one and cone of friction
Two compressions that fit realize connection, and the cooperation area that conical surface friction coordinates is fixed so that the collapsing length of thrust spring and relative
Position is constant, the elasticity stable reliability so as to improve the service life of thrust spring, to clutch gear.
Compared with prior art, this arm for adjusting automobile brake clearance automatically has advantages below：
1st, as worm gear is in counter-rotational beginning moment, elastic construction can make the step surface of worm screw depart from housing in time
Inwall, eliminates the frictional resistance that inner walls are produced to the step surface of worm screw so that the rotation response of worm screw is sensitiveer, suitable
Freely, worm screw drives the precision of worm gear wheel higher.
2nd, as power transmission shaft is connected with clutch, and worm screw is only circumferentially fixed with power transmission shaft, and can axially slide, because
This elastic construction being capable of more smoothly pushing tow worm screw so that the step surface of worm screw departs from inner walls in time, improves and adjusts essence
Degree.
3rd, as the other end of thrust spring is pressed on the packing ring of plane bearing one, when therefore reducing thrust spring pivotal
The frictional resistance being subject to so that the rotation of power transmission shaft and worm screw is more smooth, and precision is higher.
4th, as the cooperation area that the conical surface friction of adjustment axis and clutch gear coordinates is fixed so that thrust spring flexible
Length and relative position are constant, the elasticity stable reliability so as to improve the service life of thrust spring, to clutch gear.
Description of the drawings
Fig. 1 is the lateral partial structurtes sectional view of arm for adjusting automobile brake clearance automatically.
Fig. 2 is the structure sectional view in Fig. 1 at A-A.
Fig. 3 is the schematic enlarged-scale view in Fig. 1 at B.
Fig. 4 is the schematic enlarged-scale view in Fig. 1 at C.
Fig. 5 is the structure sectional view of elastic construction in embodiment two.
Fig. 6 is the structure sectional view of elastic construction in embodiment three.
In figure, 1, housing；11st, installing hole；12nd, ring gear；2nd, worm gear；3rd, worm screw；31st, step surface；32nd, spliced eye；4th, pass
Moving axis；5th, clutch；51st, clutch gear；511st, clutch part two；512nd, cone of friction two；52nd, adjustment axis；521st, clutch part one；
522nd, cone of friction one；53rd, large helical gear；54th, thrust spring；55th, brake spring；56th, plane bearing one；57th, plane bearing
Two；6th, elastic construction；61st, butterfly spring；62nd, ball-and-socket pad；621st, butting section；63rd, polyurethane spring；64th, helical spring；7、
Support set；71st, convex edge is supported；8th, bevel pinion；9th, little gear.
Specific embodiment
The following is the specific embodiment of the present invention and accompanying drawing combined, technical scheme is further described,
But the present invention is not limited to these embodiments.
Embodiment one：
As shown in Figure 1 and Figure 2, a kind of arm for adjusting automobile brake clearance automatically, including housing 1, worm gear 2, worm screw 3, power transmission shaft
4th, clutch 5, bevel pinion 8, little gear 9 and ring gear 12, worm gear 2 is connected in housing 1, and worm screw 3 is meshed with worm gear 2, and
Worm screw 3 can circumferentially rotate and move axially, power transmission shaft 4 and the coaxial setting of worm screw 3, one end of power transmission shaft 4 and clutch 5
It is connected, one end of other end worm screw 3 is connected, power transmission shaft 4 is circumferentially fixed with worm screw 3, and worm screw 3 can be with respect to power transmission shaft 4
Axial movement, ring gear 12 is fixed on housing 1, and ring gear 12 and the concentric setting of worm gear 2, and little gear 9 is circumferential with bevel pinion 8
Fixing, wherein little gear 9 is meshed with ring gear 12, and clutch 5 includes a large helical gear 53, bevel pinion 8 and clutch 5
Large helical gear 53 is meshed, and with step surface 31 on worm screw 3, the step surface 31 is relative with 1 inwall of housing, when housing 1 is positive
When rotation is braked, worm screw 3 moves axially, and until step surface 31 can be pressed on 1 inwall of housing, braking is completed, in housing
Elastic construction 6 is additionally provided with 1, the elastic construction 6 acts on the other end of worm screw 3, when housing 1 is rotated backward come when releasing braking
Elastic construction 6 can axial pushing tow worm screw 3, make step surface 31 depart from 1 inwall of housing before worm screw 3 rotates, reduce when rotating
Frictional resistance.
Specifically, in conjunction with support set 7 shown in Fig. 3, Fig. 4, is additionally provided with housing 1, housing 1 is internal to have installation position,
7 clamping of support set is positioned in installation position, and worm screw 3 is located at the side of support set 7, and power transmission shaft 4 is located at the opposite side of support set 7, its
One end of middle worm screw 3 rotates and is plugged in support set 7, and can relative support set 7 move axially, open up in the end of worm screw 3
The end for having spliced eye 32, power transmission shaft 4 passes through support set 7 and inserts in the spliced eye 32 of worm screw 3, and the cross section of power transmission shaft 4 is
Regular hexagon, the shape of spliced eye 32 is adapted therewith, realize circumferentially fixed between power transmission shaft 4 and worm screw 3, certainly in reality
In the course of processing, the cross section of power transmission shaft 4 can also be square.Elastic construction 6 includes butterfly spring 61 and ball-and-socket pad 62,
The quantity of butterfly spring 61 needs to set according to elastic force, offers installing hole 11, the other end grafting of worm screw 3 on 1 inwall of housing
In installing hole 11, butterfly spring 61 and ball-and-socket pad 62 are arranged in installing hole 11, are had to side on ball-and-socket pad 62
The spherical butting section 621 that protrudes, butterfly spring 61 is pressed on 62 side of ball-and-socket pad, and the butting section 621 of ball-and-socket pad 62 is supported
It is pressed on 3 end face of worm screw, reduces frictional resistance when worm screw 3 rotates.
Clutch 5 also includes clutch gear 51, adjustment axis 52, thrust spring 54 and brake spring 55, the end face of support set 7
Upper circumference has support convex edge 71, and power transmission shaft 4 is supported on convex edge 71 and is arranged with plane bearing 2 57 through convex edge 71 is supported, should
The retainer of plane bearing 2 57 is pressed on the end face of support set 7, and adjustment axis 52 are circumferentially fixed with the end of power transmission shaft 4, from
Close gear 51, large helical gear 53, thrust spring 54 and brake spring 55 to be all set on power transmission shaft 4, and the one of clutch gear 51
End is in mating connection with one end of large helical gear 53, and 55 one end of brake spring is acted on clutch gear 51, and the other end is acted on
On large helical gear 53, when large helical gear 53 is rotated, the other end can be pressed on the packing ring of plane bearing 2 57, reduce big helical teeth
The frictional resistance of wheel 53.The end of adjustment axis 52 has the clutch part 1 of plate-like, the end face outer edge tool of clutch part 1
There is cone of friction 1, the clutch part 2 511 with annular on the end face of clutch gear 51, the inside edge tool of clutch part 2 511
There is cone of friction 2 512, cone of friction 1 is relative with cone of friction 2 512, and plane bearing 1 is arranged with power transmission shaft 4,
One end of thrust spring 54 is pressed on clutch gear 51, and the other end is pressed on the packing ring of plane bearing 1 so that plane
The retainer of bearing 1 is pressed on the end face for supporting convex edge 71, and when 55 spreading of brake spring extends, thrust spring 54 can
The cone of friction 2 512 of clutch part 2 511 is made to be pressed on the cone of friction 1 of clutch part 1 so that both realize cone
Face frictional fit, i.e. clutch 5 are in bonding state.
After adjustment arm is installed on car body, housing 1 is connected with brake chamber, and ring gear 12 is fixed by a control arm
On car body, brake camshaft is located in worm gear 2, and both spline fitted, and during braking, housing 1 is under the control of brake chamber
Center around worm gear 2 rotates forward, can be to one end pushing tow worm screw 3,3 elasticity of compression structure 6 of worm screw while worm gear 2 is rotated
Until the step surface 31 of worm screw 3 is mutually compressed with 1 inwall of housing, now worm gear 2 is real by rotating forward for brake-toggle shaft
Now brake, in the braking procedure, ring gear 12 is maintained static, therefore little gear 9 can be rotated, so as to drive 8 turns of bevel pinion
Dynamic, bevel pinion 8 drives large helical gear 53 to rotate, and large helical gear 53 drives clutch gear 51 to rotate, but now brake spring
55 cones of friction 2 512 on contraction state, the i.e. clutch gear 51 are divided for one 522 casees with cone of friction in adjustment axis 52
From that is, clutch 5 is in released state, therefore interrupts with regard to this in the transmission process, and worm screw 3 will not rotate；Brake release
When, housing 1 is rotated backward with worm gear 2, and worm gear 2 rotates backward to release braking by brake camshaft, equally, little gear 9
Rotate backward under ring gear 12 is acted on, drive bevel pinion 8 to rotate backward, bevel pinion 8 drives large helical gear 53 to rotate backward,
Now brake spring 55 is in spreading elongation state in the presence of the power that rotates in a circumferential direction so that large helical gear 53 and clutch gear 51
Engagement, large helical gear 53 drives the rotation of 51 direction of clutch gear, the friction in the presence of thrust spring 54, on clutch gear 51
The conical surface 2 512 can be fitted on the cone of friction 1 being pressed in adjustment axis 52, realize clutch gear 51 with adjustment axis 52
In conjunction with, i.e., clutch 5 is in bonding state, and adjustment axis 52 can be driven to rotate, and adjustment axis 52 drive power transmission shaft 4 to rotate, and then
Driving worm screw 3 to rotate, worm screw 3 is engaged with worm gear 2, therefore, it is possible to drive worm gear 2 set angle to be rotated relative to housing 1, realizes system
The adjustment in dynamic gap.Wherein as worm gear 2 is in counter-rotational beginning moment, elastic construction 6 can make the step surface 31 of worm screw 3
Depart from time 1 inwall of housing, eliminate the frictional resistance that 1 inwall of housing is produced to the step surface 31 of worm screw 3 so that the turning of worm screw 3
Dynamic response is sensitiveer, smooth, and worm screw 3 drives the precision of the rotation of worm gear 2 higher.
Embodiment two：
The structure of the arm for adjusting automobile brake clearance automatically is essentially identical with embodiment one, and difference is as shown in figure 5, elasticity
Structure 6 includes that the polyurethane spring 63 of column and ball-and-socket pad 62, polyurethane spring 63 and ball-and-socket pad 62 are arranged on installing hole
In 11, polyurethane spring 63 is pressed on 62 side of ball-and-socket pad, and the butting section 621 of ball-and-socket pad 62 is pressed on 3 end face of worm screw
On.
Embodiment three：
The structure of the arm for adjusting automobile brake clearance automatically is essentially identical with embodiment one, and difference is as shown in fig. 6, elasticity
Structure 6 includes that the helical spring 64 of column and ball-and-socket pad 62, helical spring 64 and ball-and-socket pad 62 are arranged in installing hole 11,
Helical spring 64 is pressed on 62 side of ball-and-socket pad, and the butting section 621 of ball-and-socket pad 62 is pressed on 3 end face of worm screw.
Specific embodiment described herein is only explanation for example to present invention spirit.The affiliated technology neck of the present invention
The technical staff in domain can be made various modifications or supplement or replaced using similar mode to described specific embodiment
Generation, but the spirit without departing from the present invention or surmount scope defined in appended claims.
Although more employ the terms such as housing 1, installing hole 11, ring gear 12, worm gear 2 herein, but be not precluded from using
The probability of other terms.Using these terms just for the sake of more easily describing and explaining the essence of the present invention；Them
It is all contrary with spirit of the present invention to be construed to any additional restriction.
Claims (10)
1. a kind of arm for adjusting automobile brake clearance automatically, including housing (1), be provided with housing (1) worm gear (2) being meshed and
Worm screw (3), worm screw (3) are rotatably connected in housing (1), and worm screw (3) can move axially, and described worm screw (3) are upper to be had
There are the step surface (31) that can be pressed on housing (1) inwall, housing (1) when housing (1) is rotated forward and is braked
Clutch (5) is inside additionally provided with, it is characterised in that also rotate the power transmission shaft (4) being provided with worm screw (3) in the same direction in housing (1),
One end of the power transmission shaft (4) is connected with clutch (5), and the other end is connected with one end circumference of worm screw (3), and worm screw (3) energy
Enough relative power transmission shaft (4) axial movements, being additionally provided with when housing (1) is rotated backward in housing (1) being capable of pushing tow worm screw (3)
And make the elastic construction (6) of step surface (31) disengaging housing (1) inwall of worm screw (3).
2. arm for adjusting automobile brake clearance automatically according to claim 1, it is characterised in that be connected in housing (1)
There is support set (7), the one end of worm screw (3) rotates and is plugged in support set (7), and worm screw (3) being capable of relative support set (7)
Slide axially, the end of power transmission shaft (4) be connected through support set (7) and with worm screw (3).
3. arm for adjusting automobile brake clearance automatically according to claim 2, it is characterised in that the horizontal stroke of power transmission shaft (4)
Section is polygon, and the end of worm screw (3) offers the spliced eye (32) being adapted with power transmission shaft (4) shape, the biography
The end of moving axis (4) is plugged in the spliced eye (32) of worm screw (3).
4. the arm for adjusting automobile brake clearance automatically according to claim 1 or 2 or 3, it is characterised in that the elastic construction
(6) include butterfly spring (61) and ball-and-socket pad (62), on housing (1) inwall, offer installing hole (11), above-mentioned worm screw
(3) the other end is plugged in installing hole (11), and butterfly spring (61) and ball-and-socket pad (62) are arranged on installing hole (11)
Interior, in the upper spherical butting section (621) having to side protrusion of ball-and-socket pad (62), butterfly spring (61) are pressed on ball-and-socket
On pad (62) side, the butting section (621) of ball-and-socket pad (62) is pressed on worm screw (3) end face.
5. the arm for adjusting automobile brake clearance automatically according to claim 1 or 2 or 3, it is characterised in that the elastic construction
(6) include polyurethane spring (63) and the ball-and-socket pad (62) of column, on housing (1) inwall, installing hole (11) offered,
The other end of above-mentioned worm screw (3) is plugged in installing hole (11), and polyurethane spring (63) and ball-and-socket pad (62) are arranged on
In installing hole (11), in the upper spherical butting section (621) having to side protrusion of ball-and-socket pad (62), the polyurethane spring
(63) it is pressed on ball-and-socket pad (62) side, the butting section (621) of ball-and-socket pad (62) is pressed on worm screw (3) end face.
6. the arm for adjusting automobile brake clearance automatically according to Claims 2 or 3, it is characterised in that described clutch (5) wrap
Include clutch gear (51), adjustment axis (52) and the thrust spring (54) that clutch gear (51) matched with adjustment axis (52) made,
Plane bearing one (56) is arranged with power transmission shaft (4), and the one end of thrust spring (54) is pressed on clutch gear (51)
On, the other end is pressed on the packing ring of plane bearing one (56).
7. arm for adjusting automobile brake clearance automatically according to claim 6, it is characterised in that clutch (5) also wrap
Include one end in mating connection with clutch gear (51) in large helical gear (53), housing (1) is interior to be fixed with plane bearing two
(57), the other end described large helical gear (53) can be pressed on the packing ring of plane bearing two (57).
8. arm for adjusting automobile brake clearance automatically according to claim 7, it is characterised in that the end of support set (7)
On face, circumference has support convex edge (71), and above-mentioned power transmission shaft (4) are through support convex edge (71), the guarantor of the plane bearing one (56)
Hold frame to be pressed on the end face for supporting convex edge (71), the plane bearing two (57) is set in support convex edge (71), and plane
The retainer of bearing two (57) is pressed on the end face of support set (7).
9. arm for adjusting automobile brake clearance automatically according to claim 6, it is characterised in that described adjustment axis (52) rotate
It is connected on housing (1), and adjustment axis (52) is circumferentially positioned with power transmission shaft (4), the clutch gear (51) and large helical gear
(53) all rotate and be set on power transmission shaft (4), and one end of clutch gear (51) is in mating connection with large helical gear (53), only
Push away clutch gear (51) in the presence of spring (54) the other end can with adjustment axis (52) mutually compress connected.
10. arm for adjusting automobile brake clearance automatically according to claim 9, it is characterised in that adjustment axis (52)
End has the clutch part one (521) of plate-like, and the end face outer edge of the clutch part one (521) has cone of friction one (521),
Clutch part two (511) with annular on the end face of clutch gear (51), the inside edge of the clutch part two (511) has
Cone of friction two (512), in the presence of thrust spring (54) cone of friction two (512) of clutch part two (511) can with from
The cone of friction one (521) in conjunction portion one (521) fits compression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611140721.8A CN106438782B (en) | 2016-12-12 | 2016-12-12 | Automatic adjusting arm for automobile brake clearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611140721.8A CN106438782B (en) | 2016-12-12 | 2016-12-12 | Automatic adjusting arm for automobile brake clearance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106438782A true CN106438782A (en) | 2017-02-22 |
| CN106438782B CN106438782B (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611140721.8A Active CN106438782B (en) | 2016-12-12 | 2016-12-12 | Automatic adjusting arm for automobile brake clearance |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109563896A (en) * | 2017-05-31 | 2019-04-02 | 马德拉斯工程工业私人有限公司 | Automatic slack adjuster |
| CN110626734A (en) * | 2019-09-21 | 2019-12-31 | 武汉皓梦源机械设备制造有限公司 | Automobile sheet metal part conveying device |
| CN115325055A (en) * | 2022-09-19 | 2022-11-11 | 中国重汽集团济南动力有限公司 | Brake clearance control bidirectional adjustable device and assembling process thereof |
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| CN202790247U (en) * | 2012-08-14 | 2013-03-13 | 张积岭 | Automobile brake gap automatic adjusting arm |
| CN204553642U (en) * | 2015-04-21 | 2015-08-12 | 宁波合力制动系统有限公司 | A kind of running gear for braking gap adjustment |
| CN205715382U (en) * | 2016-06-28 | 2016-11-23 | 浙江万安科技股份有限公司 | A kind of automatic braking-gap regulation arm |
| CN206246569U (en) * | 2016-11-29 | 2017-06-13 | 隆中控股集团有限公司 | Arm for adjusting automobile brake clearance automatically |
| CN206329656U (en) * | 2016-12-12 | 2017-07-14 | 隆中控股集团有限公司 | A kind of arm for adjusting automobile brake clearance automatically |
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| GB2211566A (en) * | 1987-12-19 | 1989-07-05 | Man Nutzfahrzeuge Gmbh | A brake play resetting device |
| WO2002014125A2 (en) * | 2000-08-17 | 2002-02-21 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Disk brake comprising a sliding or hinged caliper |
| CN2545426Y (en) * | 2002-06-10 | 2003-04-16 | 林巧珍 | Automatic adjusting braking arm for vehicle |
| CN2630563Y (en) * | 2003-07-05 | 2004-08-04 | 任永山 | Automobile brake gap automatic adjusting arm |
| CN201025286Y (en) * | 2006-05-08 | 2008-02-20 | 浙江隆中机械制造有限公司 | Clutch with arm adjusting automatically braking clearance of a car |
| CN202790247U (en) * | 2012-08-14 | 2013-03-13 | 张积岭 | Automobile brake gap automatic adjusting arm |
| CN204553642U (en) * | 2015-04-21 | 2015-08-12 | 宁波合力制动系统有限公司 | A kind of running gear for braking gap adjustment |
| CN205715382U (en) * | 2016-06-28 | 2016-11-23 | 浙江万安科技股份有限公司 | A kind of automatic braking-gap regulation arm |
| CN206246569U (en) * | 2016-11-29 | 2017-06-13 | 隆中控股集团有限公司 | Arm for adjusting automobile brake clearance automatically |
| CN206329656U (en) * | 2016-12-12 | 2017-07-14 | 隆中控股集团有限公司 | A kind of arm for adjusting automobile brake clearance automatically |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109563896A (en) * | 2017-05-31 | 2019-04-02 | 马德拉斯工程工业私人有限公司 | Automatic slack adjuster |
| CN110626734A (en) * | 2019-09-21 | 2019-12-31 | 武汉皓梦源机械设备制造有限公司 | Automobile sheet metal part conveying device |
| CN110626734B (en) * | 2019-09-21 | 2020-11-13 | 宁波甜宝生物信息技术有限公司 | Automobile sheet metal part conveying device |
| CN115325055A (en) * | 2022-09-19 | 2022-11-11 | 中国重汽集团济南动力有限公司 | Brake clearance control bidirectional adjustable device and assembling process thereof |
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| Publication number | Publication date |
|---|---|
| CN106438782B (en) | 2020-05-22 |
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