CN106438782B - Automatic adjusting arm for automobile brake clearance - Google Patents
Automatic adjusting arm for automobile brake clearance Download PDFInfo
- Publication number
- CN106438782B CN106438782B CN201611140721.8A CN201611140721A CN106438782B CN 106438782 B CN106438782 B CN 106438782B CN 201611140721 A CN201611140721 A CN 201611140721A CN 106438782 B CN106438782 B CN 106438782B
- Authority
- CN
- China
- Prior art keywords
- worm
- clutch
- transmission shaft
- brake clearance
- gear
- 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.)
- Active
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
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/62—Slack adjusters mechanical self-acting in both directions for adjusting excessive and insufficient play
Abstract
The invention provides an automatic adjusting arm for an automobile brake clearance, and belongs to the technical field of automobile parts. It has solved the problem that current adjustment arm brake clearance adjustment precision is low. The automatic automobile brake clearance adjusting arm comprises a shell, wherein a worm wheel and a worm are arranged in the shell, the worm is rotatably connected in the shell and can axially move, a step surface which can be pressed on the inner wall of the shell when the shell rotates forwards for braking is arranged on the worm, a clutch is further arranged in the shell, a transmission shaft is further rotatably connected in the shell, one end of the transmission shaft is connected with the clutch, the other end of the transmission shaft is circumferentially and fixedly connected with one end of the worm, and an elastic structure which can push the worm and enable the step surface of the worm to be separated from the inner wall of the shell when the shell rotates backwards is further arranged. The automatic automobile brake clearance adjusting arm has the advantages that the resistance to the automatic automobile brake clearance adjusting arm is smaller when the brake clearance is adjusted, the adjustment is smoother, and the adjustment precision is higher.
Description
Technical Field
The invention belongs to the technical field of automobile parts and relates to an automatic adjusting arm for an automobile brake clearance.
Background
The brake clearance of a motor vehicle is the clearance that must be maintained between the friction partners (drum and shoe or disc and pad) in the brake. The braking clearance can not be too small and too large, the braking clearance is too small, the brake can not be completely released, the brake is easy to generate heat, the friction lining is worn prematurely, the oil consumption of the automobile is increased, the clearance is too large, the stroke of the brake pedal is increased, the operation is inconvenient, and the braking distance is prolonged. Since the brake clearance increases as the friction linings of the brake wear out during friction, the vehicle brake must have a brake clearance adjustment.
For example, the Chinese patent application (application No. 200610025906.4) discloses an automatic adjusting arm for the brake clearance of an automobile, which comprises an adjusting arm shell, a big worm wheel and a big worm which are arranged in the adjusting arm shell and meshed with each other, wherein one end of the big worm in the adjusting arm shell is provided with a thrust spring, the other end of the big worm is provided with a one-way clutch, the end part of the big worm wheel is provided with a control arm, a gear ring is fixed on the control arm, a small worm is arranged in the adjusting arm shell and meshed with a small worm wheel in the one-way clutch, one end of the small worm is circumferentially fixed with a small gear, the small gear is meshed with the gear ring, a spring is arranged between the small gear and the small worm, a clearance is reserved between the other end of the small worm and the adjusting arm shell, when the adjusting arm reversely rotates to release the brake, the gear ring can drive the big worm to rotate through the small worm and the, thereby driving the big worm wheel to rotate by a set angle and realizing the adjustment of the braking clearance, wherein the big worm has small rotating angle and high required precision, but because the big worm compresses the thrust spring during braking, the end face of the worm is pressed on the inner wall of the shell, the thrust spring in the adjusting arm is used for enabling the end part of the large worm to be meshed with the clutch, therefore, at the moment when the large worm starts to rotate, the thrust spring can not push the large worm away in time, so that large friction resistance is generated between the large worm and the inner wall of the shell, thereby reducing the sensitivity of the large worm and influencing the response speed of the large worm, furthermore, as one end of the large worm is meshed with the large worm wheel and the other end is directly connected with the clutch, i.e. there are many parts connected to the large worm, which also results in the large worm being subjected to a large frictional resistance, which further affects the sensitivity and corresponding speed of the large worm, thereby reducing the accuracy of the brake clearance adjustment.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides an automatic automobile brake clearance adjusting arm which is smaller in resistance, smoother in adjustment and higher in adjustment precision when the brake clearance is adjusted.
The purpose of the invention can be realized by the following technical scheme: the utility model provides an automobile brake clearance automatic adjustment arm, includes the casing, is equipped with engaged with worm wheel and worm in the casing, the worm rotates to be connected in the casing, and the worm can axial displacement, have on the worm and to support the step face that presses on shells inner wall when the casing forward rotation is braked, still be equipped with the clutch in the casing, its characterized in that, still rotate in the casing and be connected with the transmission shaft with the worm syntropy, the one end of this transmission shaft links with the clutch, and the other end links firmly with the one end circumference of worm, and the worm can be relative transmission shaft axial displacement, still be equipped with in the casing and push away the worm and make the step face of worm break away from shells inner wall's elastic construction when casing counter rotation.
The worm wheel is sleeved with the cam shaft of the brake, the shell drives the worm wheel to rotate in a forward direction, the worm wheel can push the worm to one end while rotating, the worm compresses the elastic structure until the step surface of the worm is pressed against the inner wall of the shell, at the moment, the worm wheel realizes braking through the forward rotation of the cam shaft of the brake, the worm cannot rotate because the clutch is in a separation state in the process, when the braking is released, the clutch is in a combination state, the shell drives the worm wheel to rotate in a reverse direction, the worm wheel drives the cam shaft of the brake to rotate in a reverse direction, the worm wheel can drive the transmission shaft to rotate through the clutch in the process, the transmission shaft and the worm are fixed in the same direction and in the circumferential direction, so the worm is driven to rotate, the worm drives the worm wheel to rotate for a set angle relative to the shell, the automatic adjustment, eliminate the frictional resistance that shells inner wall produced to the step face of worm, make the rotation response of worm more sensitive, smooth and easy, the worm drives worm wheel pivoted precision higher, compare the direct and clutch hookup of tip of worm in traditional adjustment arm simultaneously, the axial displacement resistance that leads to receiving is big, transmission shaft and clutch are connected in this adjustment arm, and the worm only is fixed with transmission shaft circumference, and the axial can slide, consequently elastic construction can be more smooth and easy the top pushes away the worm, make the step face of worm in time break away from shells inner wall, improve the regulation precision.
In the automatic automobile brake clearance adjusting arm, the shell is fixedly connected with the support sleeve, one end of the worm is rotatably inserted in the support sleeve, the worm can axially slide relative to the support sleeve, and the end part of the transmission shaft penetrates through the support sleeve and is connected with the worm. The supporting sleeve is used for positioning one end of the worm and one end of the transmission shaft which are connected with each other, the coaxiality of the transmission shaft and the worm is guaranteed, and the friction resistance of the worm in axial movement relative to the transmission shaft is reduced.
In the automatic automobile brake clearance adjusting arm, the cross section of the transmission shaft is polygonal, the end part of the worm is provided with an insertion hole which is matched with the shape of the transmission shaft, and the end part of the transmission shaft is inserted in the insertion hole of the worm. Namely, the cross section of the transmission shaft can be hexagonal or square, so that the transmission shaft and the worm are fixed in the circumferential direction, and the transmission shaft can slide relatively and smoothly in the axial direction.
In the above automatic automobile brake clearance adjusting arm, the elastic structure includes a belleville spring and a ball socket gasket, a mounting hole is provided on the inner wall of the housing, the other end of the worm is inserted into the mounting hole, the belleville spring and the ball socket gasket are provided in the mounting hole, a spherical abutting portion protruding to one side is provided on the ball socket gasket, the belleville spring abuts against the side surface of the ball socket gasket, and the abutting portion of the ball socket gasket abuts against the end surface of the worm. The quantity of the belleville springs is set according to the elastic force requirement, the ball socket gasket is abutted against the belleville springs through the side face, the stability is good, the spherical abutting part is abutted against the end face of the worm, and the friction resistance to the worm is small.
In the above automatic automobile brake clearance adjusting arm, the elastic structure includes a cylindrical polyurethane spring and a ball socket gasket, a mounting hole is formed in the inner wall of the housing, the other end of the worm is inserted into the mounting hole, the polyurethane spring and the ball socket gasket are arranged in the mounting hole, a spherical abutting portion protruding to one side is provided on the ball socket gasket, the polyurethane spring abuts against the side surface of the ball socket gasket, and the abutting portion of the ball socket gasket abuts against the end surface of the worm. In a similar way, the ball socket gasket is pressed against the end face of the polyurethane spring through the side face, the stability is good, and the ball socket gasket is pressed against the end face of the worm through the spherical abutting part, so that the friction resistance to the worm is small.
In the above arm for automatically adjusting the brake clearance of the automobile, the clutch includes a clutch gear, an adjusting shaft, and a thrust spring for tightly fitting the clutch gear and the adjusting shaft, the transmission shaft is sleeved with a first plane bearing, one end of the thrust spring is pressed against the clutch gear, and the other end of the thrust spring is pressed against a washer of the first plane bearing. The clutch can realize combination and separation, the effort of thrust spring makes clutch gear and regulating shaft compress tightly the combination when contact braking, clutch gear's rotation can be given for the regulating shaft this moment, and then give the transmission shaft, thrust spring supports and presses on clutch gear in the rotation process, need rotate along with clutch gear, therefore thrust spring's the other end supports and presses on the packing ring of plane bearing one, thereby the frictional resistance who receives when reducing thrust spring and rotate, make the rotation of transmission shaft and worm more smooth and easy, the precision is higher.
In the automatic automobile brake clearance adjusting arm, the clutch further comprises a second plane bearing fixedly connected in the shell, and one end of the second plane bearing can be abutted against a gasket of the second plane bearing. The large helical gear can be meshed with the clutch gear, the rotation of the worm wheel is transmitted to the clutch gear, the teeth of the large helical gear are helical teeth, and therefore axial component force can be applied to the large helical gear in circumferential rotation, the end portion of the large helical gear is abutted against a gasket of the plane bearing II, friction resistance applied to the large helical gear in rotation is reduced, the transmission shaft and the worm rotate more smoothly, and accuracy is higher.
In the automatic automobile brake clearance adjusting arm, a supporting convex edge is arranged on the end surface of the supporting sleeve in the circumferential direction, the transmission shaft penetrates through the supporting convex edge, the retainer of the first plane bearing is pressed against the end surface of the supporting convex edge, the second plane bearing is sleeved on the supporting convex edge, and the retainer of the second plane bearing is pressed against the end surface of the supporting sleeve. The support sleeve can position the transmission shaft and the worm, and can accurately position the first plane bearing and the second plane bearing, so that the thrust spring and the large helical gear are kept more stably.
In foretell car braking clearance automatic adjustment arm, the regulating spindle rotates to be connected on the casing, and the regulating spindle is fixed with transmission shaft circumference, clutch gear and big helical gear all rotate the cover and establish on the transmission shaft, and clutch gear's one end and big helical gear cooperate and be connected, and clutch gear's the other end can support with the regulating spindle to press to link firmly under thrust spring's effect. The rotation transmission of worm wheel is for big helical gear, and big helical gear drives separation and reunion gear rotation, and separation and reunion gear drives the regulating spindle and rotates, and the regulating spindle drives the transmission shaft and rotates, and then drives the worm and rotate, realizes the adjustment of separation and reunion clearance.
In foretell automobile brake clearance automatic adjustment arm, the tip of regulating spindle has discoid separation and reunion portion one, the terminal surface outside border of separation and reunion portion one has friction conical surface one, annular separation and reunion portion two has on the terminal surface of clutch gear, the inside border of separation and reunion portion two has friction conical surface two, and the friction conical surface two of separation and reunion portion two can laminate mutually with the friction conical surface one of separation and reunion portion one and compress tightly under thrust spring's effect. The adjusting shaft and the clutch gear are attached and pressed to be connected through a first friction conical surface and a second friction conical surface, the matching area of the friction fit of the conical surfaces is fixed, the telescopic length and the relative position of the thrust spring are constant, the service life of the thrust spring is prolonged, and the elasticity of the clutch gear is stable and reliable.
Compared with the prior art, the automatic adjusting arm for the automobile brake clearance has the following advantages:
1. because the worm wheel is at the beginning instant of the reverse rotation, the elastic structure can enable the step surface of the worm to be separated from the inner wall of the shell in time, and the friction resistance of the inner wall of the shell to the step surface of the worm is eliminated, so that the rotation response of the worm is more sensitive and smooth, and the worm drives the worm wheel to rotate with higher precision.
2. Because the transmission shaft is connected with the clutch, the worm is only fixed with the transmission shaft in the circumferential direction and can slide in the axial direction, the elastic structure can more smoothly push the worm, the step surface of the worm is timely separated from the inner wall of the shell, and the adjusting precision is improved.
3. Because the other end of the thrust spring is pressed against the washer of the first plane bearing, the friction resistance applied to the thrust spring during rotation is reduced, so that the rotation of the transmission shaft and the worm is smoother, and the precision is higher.
4. Because the matching area of the friction fit of the conical surfaces of the adjusting shaft and the clutch gear is fixed, the telescopic length and the relative position of the thrust spring are constant, the service life of the thrust spring is prolonged, and the elasticity of the clutch gear is stable and reliable.
Drawings
Fig. 1 is a partial structural sectional view of an automatic brake clearance adjusting arm for an automobile.
Fig. 2 is a sectional view of the structure at a-a in fig. 1.
Fig. 3 is an enlarged view of the structure at B in fig. 1.
Fig. 4 is an enlarged view of the structure at C in fig. 1.
FIG. 5 is a structural sectional view of the elastic structure in the second embodiment.
FIG. 6 is a structural sectional view of an elastic structure in the third embodiment.
In the figure, 1, a housing; 11. mounting holes; 12. a toothed ring; 2. a worm gear; 3. a worm; 31. a step surface; 32. inserting holes; 4. a drive shaft; 5. a clutch; 51. a clutch gear; 511. a second clutch part; 512. a second friction conical surface; 52. an adjustment shaft; 521. a first clutch part; 522. a first friction conical surface; 53. a large bevel gear; 54. a thrust spring; 55. a clutch spring; 56. a first plane bearing; 57. a second plane bearing; 6. an elastic structure; 61. a belleville spring; 62. a ball and socket spacer; 621. an abutting portion; 63. a polyurethane spring; 64. a coil spring; 7. a support sleeve; 71. supporting the convex edge; 8. a bevel pinion gear; 9. a pinion gear.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
The first embodiment is as follows:
as shown in fig. 1 and 2, an automatic adjusting arm for a brake clearance of an automobile comprises a housing 1, a worm wheel 2, a worm 3, a transmission shaft 4, a clutch 5, a small bevel gear 8, a small gear 9 and a gear ring 12, wherein the worm wheel 2 is connected in the housing 1, the worm 3 is meshed with the worm wheel 2, the worm 3 can rotate circumferentially and move axially, the transmission shaft 4 is arranged coaxially with the worm 3, one end of the transmission shaft 4 is connected with the clutch 5, one end of the worm 3 at the other end is connected, the transmission shaft 4 is fixed circumferentially with the worm 3, the worm 3 can move axially relative to the transmission shaft 4, the gear ring 12 is fixed on the housing 1, the gear ring 12 is arranged coaxially with the worm wheel 2, the small gear 9 is fixed circumferentially with the small bevel gear 8, wherein the small gear 9 is meshed with the gear ring 12, the clutch 5 comprises a large bevel gear 53, the small bevel gear 8 is meshed with the, the worm 3 is provided with a step surface 31, the step surface 31 is opposite to the inner wall of the shell 1, when the shell 1 rotates forwards for braking, the worm 3 moves axially until the step surface 31 can be abutted against the inner wall of the shell 1, the braking is completed, the shell 1 is also internally provided with an elastic structure 6, the elastic structure 6 acts on the other end of the worm 3, when the shell 1 rotates reversely to release the braking, the elastic structure 6 can axially push the worm 3, before the worm 3 rotates, the step surface 31 is separated from the inner wall of the shell 1, and the friction resistance during the rotation is reduced.
Specifically, as shown in fig. 3 and 4, a support sleeve 7 is further disposed in the housing 1, an installation position is disposed in the housing 1, the support sleeve 7 is clamped and positioned in the installation position, the worm 3 is located on one side of the support sleeve 7, and the transmission shaft 4 is located on the other side of the support sleeve 7, wherein one end of the worm 3 is rotatably inserted into the support sleeve 7 and can axially move relative to the support sleeve 7, an insertion hole 32 is formed in an end of the worm 3, an end of the transmission shaft 4 penetrates through the support sleeve 7 and is inserted into the insertion hole 32 of the worm 3, a cross section of the transmission shaft 4 is a regular hexagon, and a shape of the insertion hole 32 is adapted to the regular hexagon, so that circumferential fixation between the transmission shaft 4 and the worm 3 is achieved, but a cross section of the transmission shaft 4 may also be. The elastic structure 6 comprises a belleville spring 61 and a ball socket gasket 62, the number of the belleville springs 61 is set according to the elastic force requirement, the mounting hole 11 is formed in the inner wall of the shell 1, the other end of the worm 3 is inserted into the mounting hole 11, the belleville spring 61 and the ball socket gasket 62 are arranged in the mounting hole 11, a spherical abutting portion 621 protruding towards one side is arranged on the ball socket gasket 62, the belleville spring 61 abuts against the side face of the ball socket gasket 62, the abutting portion 621 of the ball socket gasket 62 abuts against the end face of the worm 3, and the friction resistance of the worm 3 in rotation is reduced.
The clutch 5 further comprises a clutch gear 51, an adjusting shaft 52, a thrust spring 54 and a clutch spring 55, a supporting convex edge 71 is circumferentially arranged on the end surface of the supporting sleeve 7, the transmission shaft 4 penetrates through the supporting convex edge 71, a second plane bearing 57 is sleeved on the supporting convex edge 71, a retainer of the second plane bearing 57 is pressed against the end surface of the supporting sleeve 7, the adjusting shaft 52 is circumferentially fixed with the end part of the transmission shaft 4, the clutch gear 51, the large helical gear 53, the thrust spring 54 and the clutch spring 55 are all sleeved on the transmission shaft 4, one end of the clutch gear 51 is matched and connected with one end of the large helical gear 53, one end of the clutch spring 55 acts on the clutch gear 51, the other end of the clutch spring acts on the large helical gear 53, and the other end of the large helical gear 53 can be pressed against a gasket of the second plane bearing 57 when rotating, so that. The end part of the adjusting shaft 52 is provided with a disc-shaped first clutch part 521, the outer edge of the end surface of the first clutch part 521 is provided with a first friction conical surface 522, the end surface of the clutch gear 51 is provided with a second annular clutch part 511, the inner edge of the second clutch part 511 is provided with a second friction conical surface 512, the first friction conical surface 522 is opposite to the second friction conical surface 512, the transmission shaft 4 is sleeved with a first plane bearing 56, one end of the thrust spring 54 is pressed on the clutch gear 51, the other end of the thrust spring is pressed on a gasket of the first plane bearing 56, so that a retainer of the first plane bearing 56 is pressed on the end surface of the supporting convex edge 71, when the clutch spring 55 expands and extends, the thrust spring 54 can press the second friction conical surface 512 of the second clutch part 511 on the first friction conical surface of the first clutch part 521, so that the two conical surfaces are in friction.
After the adjusting arm is installed on the vehicle body, the housing 1 is connected with the brake air chamber, the gear ring 12 is fixed on the vehicle body through a control arm, the brake cam shaft is arranged in the worm wheel 2 in a penetrating way and is in spline fit with the brake cam shaft, the housing 1 rotates around the center of the worm wheel 2 under the control of the brake air chamber during braking, the worm wheel 2 can push the worm 3 to one end while rotating, the worm 3 compresses the elastic structure 6 until the step surface 31 of the worm 3 is pressed against the inner wall of the housing 1, the worm wheel 2 realizes braking through the forward rotation of the brake cam shaft, the gear ring 12 is fixed during the braking process, so the pinion 9 can rotate to drive the small helical gear 8 to rotate, the small helical gear 8 drives the large helical gear 53 to rotate, the large gear 53 drives the conical surface gear 51 to rotate, but the clutch spring 55 is in a contraction state, namely, the friction two 512 on the clutch gear 51 is separated from the friction conical surface one 522, i.e. the clutch 5 is in a disengaged state, so that the transmission is interrupted as such and the worm 3 does not rotate; when the brake is released, the shell 1 drives the worm wheel 2 to reversely rotate, the worm wheel 2 releases the brake through the reverse rotation of the brake cam shaft, similarly, the pinion 9 reversely rotates under the action of the gear ring 12 to drive the small helical gear 8 to reversely rotate, the small helical gear 8 drives the large helical gear 53 to reversely rotate, at the moment, the clutch spring 55 is in an expansion extension state under the action of the circumferential rotation force, so that the large helical gear 53 is meshed with the clutch gear 51, the large helical gear 53 drives the clutch gear 51 to rotate in the direction, under the action of the thrust spring 54, the second friction conical surface 512 on the clutch gear 51 can be attached and pressed on the first friction conical surface 522 on the adjusting shaft 52, the clutch gear 51 is combined with the adjusting shaft 52, namely, the clutch 5 is in a combined state and can drive the adjusting shaft 52 to rotate, the adjusting shaft 52 drives the transmission shaft 4 to rotate, further drives the worm, therefore, the worm wheel 2 can be driven to rotate relative to the shell 1 by a set angle, and the adjustment of the brake clearance is realized. Wherein because worm wheel 2 is at the beginning of the counter rotation moment, elastic structure 6 can make the step face 31 of worm 3 break away from the inner wall of casing 1 in time, eliminates the frictional resistance that the inner wall of casing 1 produced the step face 31 of worm 3 for the rotation response of worm 3 is more sensitive, smooth and easy, and worm 3 drives worm wheel 2 pivoted precision higher.
Example two:
the structure of the automatic automobile brake clearance adjusting arm is basically the same as that of the first embodiment, and the difference is as shown in fig. 5, the elastic structure 6 includes a columnar polyurethane spring 63 and a ball socket gasket 62, the polyurethane spring 63 and the ball socket gasket 62 are arranged in the mounting hole 11, the polyurethane spring 63 is pressed against the side surface of the ball socket gasket 62, and the abutting part 621 of the ball socket gasket 62 is pressed against the end surface of the worm 3.
Example three:
the structure of the automatic brake clearance adjusting arm for the automobile is basically the same as that of the first embodiment, and the difference is as shown in fig. 6, the elastic structure 6 includes a cylindrical coil spring 64 and a ball socket gasket 62, the coil spring 64 and the ball socket gasket 62 are arranged in the mounting hole 11, the coil spring 64 is pressed against the side surface of the ball socket gasket 62, and the abutting part 621 of the ball socket gasket 62 is pressed against the end surface of the worm 3.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the terms housing 1, mounting hole 11, toothed ring 12, worm wheel 2, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (8)
1. The utility model provides an automobile brake clearance automatic adjustment arm, includes casing (1), is equipped with engaged with worm wheel (2) and worm (3) in casing (1), worm (3) rotate to be connected in casing (1), and worm (3) can axial displacement, have on worm (3) and can support step face (31) that presses on casing (1) inner wall when casing (1) forward rotation is braked, still be equipped with clutch (5) in casing (1), its characterized in that, still rotate in casing (1) and be equipped with transmission shaft (4) with worm (3) syntropy, the one end of this transmission shaft (4) links with clutch (5), and the other end links firmly with the one end circumference of worm (3), and worm (3) can be relative transmission shaft (4) axial displacement, still be equipped with in casing (1) and can push away from worm (3) and make step face (31) of worm (3) break away from the casing (31) when casing (1) counter rotation: (1) 1) Elastic structure (6) of inner wall, elastic structure (6) are including cylindrical polyurethane spring (63) and ball socket gasket (62), mounting hole (11) have been seted up on casing (1) inner wall, and the other end of above-mentioned worm (3) is pegged graft in mounting hole (11), polyurethane spring (63) and ball socket gasket (62) set up in mounting hole (11), have on ball socket gasket (62) to the convex globular portion of leaning on (621) of leaning on of one side, polyurethane spring (63) are supported and are pressed on ball socket gasket (62) side, and the portion of leaning on (621) of ball socket gasket (62) are supported and are pressed on worm (3) terminal surface.
2. The automatic automobile brake clearance adjusting arm according to claim 1, characterized in that a support sleeve (7) is fixedly connected in the housing (1), one end of the worm (3) is rotatably inserted in the support sleeve (7), the worm (3) can axially slide relative to the support sleeve (7), and the end of the transmission shaft (4) penetrates through the support sleeve (7) and is connected with the worm (3).
3. The automatic automobile brake clearance adjusting arm according to claim 2, wherein the cross section of the transmission shaft (4) is polygonal, an insertion hole (32) which is matched with the transmission shaft (4) in shape is formed in the end of the worm (3), and the end of the transmission shaft (4) is inserted into the insertion hole (32) of the worm (3).
4. The automatic automobile brake clearance adjusting arm according to claim 2 or 3, wherein the clutch (5) comprises a clutch gear (51), an adjusting shaft (52) and a thrust spring (54) for matching the clutch gear (51) with the adjusting shaft (52), a first plane bearing (56) is sleeved on the transmission shaft (4), one end of the thrust spring (54) is pressed against the clutch gear (51), and the other end of the thrust spring is pressed against a washer of the first plane bearing (56).
5. The automatic automobile brake clearance adjusting arm according to claim 4, wherein the clutch (5) further comprises a large bevel gear (53) with one end connected with the clutch gear (51) in a matching manner, a second plane bearing (57) is fixedly connected in the housing (1), and the other end of the large bevel gear (53) can be pressed against a gasket of the second plane bearing (57).
6. The automatic adjusting arm for the automobile brake clearance according to claim 5, characterized in that a support convex edge (71) is arranged on the end surface of the support sleeve (7) in the circumferential direction, the transmission shaft (4) penetrates through the support convex edge (71), the retainer of the first plane bearing (56) is pressed against the end surface of the support convex edge (71), the second plane bearing (57) is sleeved on the support convex edge (71), and the retainer of the second plane bearing (57) is pressed against the end surface of the support sleeve (7).
7. The automatic automobile brake clearance adjusting arm according to claim 4, wherein the adjusting shaft (52) is rotatably connected to the housing (1), the adjusting shaft (52) and the transmission shaft (4) are circumferentially positioned, the clutch gear (51) and the large helical gear (53) are rotatably sleeved on the transmission shaft (4), one end of the clutch gear (51) is connected with the large helical gear (53) in a matching manner, and the other end of the clutch gear (51) can be fixedly connected with the adjusting shaft (52) in an abutting manner under the action of the thrust spring (54).
8. The automatic automobile brake clearance adjusting arm as claimed in claim 7, wherein the end of the adjusting shaft (52) is provided with a disc-shaped first clutch part (521), the outer edge of the end surface of the first clutch part (521) is provided with a first friction conical surface (521), the end surface of the clutch gear (51) is provided with a second annular clutch part (511), the inner edge of the second clutch part (511) is provided with a second friction conical surface (512), and the second friction conical surface (512) of the second clutch part (511) can be attached and pressed with the first friction conical surface (521) of the first clutch part (521) under the action of the thrust spring (54).
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 CN106438782A (en) | 2017-02-22 |
| CN106438782B true CN106438782B (en) | 2020-05-22 |
Family
ID=58217883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611140721.8A Active CN106438782B (en) | 2016-12-12 | 2016-12-12 | Automatic adjusting arm for automobile brake clearance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106438782B (en) |
Families Citing this family (2)
| 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 |
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2211566A (en) * | 1987-12-19 | 1989-07-05 | Man Nutzfahrzeuge Gmbh | A brake play resetting device |
| 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 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE338227T1 (en) * | 2000-08-17 | 2006-09-15 | Knorr Bremse Systeme | FIXED CALIPER DISC BRAKE |
| 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 |
| 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 |
-
2016
- 2016-12-12 CN CN201611140721.8A patent/CN106438782B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2211566A (en) * | 1987-12-19 | 1989-07-05 | Man Nutzfahrzeuge Gmbh | A brake play resetting device |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106438782A (en) | 2017-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6937895B2 (en) | Disc brake and planetary gear reduction mechanism | |
| US10626941B2 (en) | Disc brake | |
| US20110315492A1 (en) | Disk brake | |
| US20130075205A1 (en) | Disk brake apparatus | |
| JP2014070670A (en) | Disc brake | |
| CN106438782B (en) | Automatic adjusting arm for automobile brake clearance | |
| CN102384191A (en) | Regulator of clearance self-regulating mechanism in automobile disc brake | |
| JP2016033412A (en) | Disc brake | |
| CN101327899A (en) | Brake device and brake method | |
| CN211550333U (en) | Motor drive wet clutch and car | |
| JP6448362B2 (en) | Disc brake | |
| JP5358022B2 (en) | Brake cylinder device and disc brake device | |
| JP2014214752A (en) | Electric disc brake device | |
| JP2021004646A (en) | Disc brake | |
| JP2018013167A (en) | Planetary roller screw type direct motion mechanism and electric brake device | |
| JP2019060399A (en) | Disc brake | |
| JP5946399B2 (en) | Electric disc brake device | |
| JP2016125547A (en) | Disc brake | |
| CN106050901B (en) | Clutch release bearing device and motor vehicle equipped with such a bearing | |
| JP2002503321A (en) | Improvements on disc brake assembly | |
| JP7161931B2 (en) | disc brake | |
| JP6837261B2 (en) | Brake device | |
| JP2019143643A (en) | Disc brake | |
| JP2015090157A (en) | Disc brake | |
| JP6786329B2 (en) | Reverse input cutoff device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 317600 ridge foot of Yucheng street in Yuhuan, Zhejiang Applicant after: Longzhong Holdings Group Limited by Share Ltd Address before: 317600 Taizhou City, Zhejiang Province, Yuhuan County Yucheng Street ridge foot Applicant before: Longzhong Holding Group Co., Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |