CN211314927U

CN211314927U - Automatic adjusting arm device for automobile brake clearance

Info

Publication number: CN211314927U
Application number: CN201921161861.2U
Authority: CN
Inventors: 倪世荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-08-21
Anticipated expiration: 2029-07-23

Abstract

The utility model discloses an automatic adjusting arm device for the brake clearance of an automobile with a new structure, which comprises a shell, a front cover plate component, a rear cover plate, a worm wheel, a worm, a clutch component and a worm shaft, the front cover plate assembly comprises a positioning plate, a front cover plate and a driving gear, the front cover plate is fixedly connected with the shell through a bolt, the driving gear penetrates through the hole of the front cover plate and is fixed with the positioning plate through riveting, the driving gear can rotate along with the positioning plate, the worm wheel 4 and the worm are mutually meshed and arranged in the shell, the clutch component is arranged in the shell, the clutch assembly comprises a driven gear, a driving helical gear, a one-way needle bearing, a clutch sleeve, a clutch shaft and a pressure spring, the driven gear is meshed with a driving gear in the front cover plate assembly, a flat square is arranged at one end of the clutch shaft, and a worm shaft helical gear is arranged on the diameter of the worm shaft.

Description

Automatic adjusting arm device for automobile brake clearance

Technical Field

The utility model relates to the technical field, specifically a car braking clearance automatic adjustment arm device.

Background

The automatic automobile brake clearance adjusting arm is an intermittent compensation device suitable for a wheel type automobile brake, and is used for adjusting the brake clearance of the automobile brake to keep the clearance relatively stable, so that the optimal brake force of the brake is ensured.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a technical scheme does: the utility model provides an automobile brake clearance automatic adjustment arm device, includes casing, front shroud subassembly, back shroud, worm wheel, worm, clutch subassembly, worm axle, the front shroud subassembly includes locating plate, front shroud and driving gear, the front shroud passes through bolt and casing fixed connection, it is fixed with the locating plate through the riveting after the driving gear passes the front shroud diaphragm orifice, the driving gear can rotate along with the locating plate, worm wheel and worm intermeshing just set up in the casing, the clutch subassembly sets up in the casing, the clutch subassembly includes driven gear, initiative helical gear, one-way bearing, separation and reunion cover, separation and reunion axle and pressure spring, driven gear with driving gear in the front shroud subassembly meshes mutually, separation and reunion axle one end sets up flat square hole, worm axle footpath is equipped with worm axle helical gear.

As an improvement, the flat square hole is matched with the special-shaped inner hole of the driven gear and is provided with a free gap amount, the gap amount can be set randomly according to needs, the clutch shaft is pressed along the direction of the driving helical gear, is separated from the driven gear after being pressed, and can rebound through the pressure spring to be transmitted with the driven gear again.

As an improvement, the worm shaft is in interference fit with the inner hole of the worm, the helical gear of the worm shaft is meshed with the driving helical gear in the clutch assembly, and the rear cover plate is fixedly connected with the other end face of the shell through a screw.

After the structure more than adopting, the utility model has the advantages of as follows:

the utility model discloses rational in infrastructure, high durability and convenient use, braking excess clearance through clutch subassembly record, during the braking return stroke, the direction motion is returned to the air chamber push rod to the automatic adjustment arm, the locating plate drives the relative casing of driving gear and rotates, driving gear transmission driven gear, driven gear at first through the fit clearance with separation and reunion axle setting, when the braking continues the return stroke, driven gear continues transmission separation and reunion axle through the fit clearance with separation and reunion axle setting and rotates, one-way bearing in the clutch subassembly is the engaged state this moment, the separation and reunion axle can drive the rotation of initiative helical gear through the bearing of joint, the initiative helical gear drives the worm axle and rotates, the worm axle drives the worm and rotates, accomplish one time excess clearance adjustment promptly, automatic compensation's reliability and stability have been improved.

Drawings

FIG. 1 is a schematic structural view of an automatic adjusting arm device for a brake clearance of an automobile according to the present invention;

FIG. 2 is a sectional view of the automatic adjusting arm device for automobile brake clearance according to the present invention;

FIG. 3 is a schematic view of the structure of the worm wheel and worm of the automatic adjusting arm device for the braking clearance of the vehicle of the present invention;

FIG. 4 is a schematic structural view of a positioning plate assembly of an automatic adjusting arm device for automobile brake clearance according to the present invention;

fig. 5 is a schematic structural view of a worm shaft of an automatic adjusting arm device for a brake clearance of an automobile according to the present invention;

fig. 6 is a schematic structural view of the clutch assembly of the automatic adjusting arm device for the brake clearance of the vehicle of the present invention.

As shown in fig. 1-6: 1. the device comprises a shell, 2, a front cover plate assembly, 201, a positioning plate, 202, a front cover plate, 203, a driving gear, 3, a rear cover plate, 4, a turbine, 5, a worm, 6, a clutch assembly, 601, a driven gear, 602, a driving bevel gear, 603, a one-way needle bearing, 604, a clutch sleeve, 605, a clutch shaft, 606, a pressure spring, 607 flat square holes, 7, a worm shaft, 701 and a worm shaft bevel gear.

Detailed Description

In order to better understand the technical solution of the present invention, the following detailed description of the present invention is made with reference to the accompanying drawings and the using method of the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

With reference to fig. 1-6, an automatic adjusting arm device for automobile brake clearance comprises a housing 1, a front cover plate assembly 2, a rear cover plate 3, a worm wheel 4, a worm 5, a clutch assembly 6, and a worm shaft 7, wherein the front cover plate assembly 2 comprises a positioning plate 201, a front cover plate 202, and a driving gear 203, the front cover plate 202 is fixedly connected to the housing 1 through bolts, the driving gear 203 passes through a hole of the front cover plate 202 and is fixed to the positioning plate 201 through riveting, the driving gear 203 can rotate along with the positioning plate 201, the worm wheel 4 and the worm 5 are engaged with each other and arranged in the housing 1, the clutch assembly 6 is arranged in the housing 1, the clutch assembly 6 comprises a driven gear 601, a driving helical gear 602, a one-way needle bearing 603, a clutch sleeve 604, a clutch shaft 605, and a pressure spring 606, the driven gear 601 is engaged with the driving gear 203 in the front cover plate, one end of the clutch shaft 605 is provided with a flat square hole 607, and the shaft diameter of the worm shaft 7 is provided with a worm shaft helical gear 701.

As a preferred embodiment of this embodiment, the flat square hole 607 is matched with the irregular inner hole of the driven gear 601 and is provided with a free gap amount, the gap amount can be set arbitrarily according to requirements, and the clutch shaft 605 is pressed along the direction of the driving helical gear 602, is separated from the driven gear 601 after being pressed, and can rebound through the compression spring to be transmitted with the driven gear 601 again.

In a preferred embodiment of the present invention, the worm shaft 7 and the inner hole of the worm (5) are in an interference fit, the worm shaft helical gear 701 is engaged with the driving helical gear 602 in the clutch assembly, and the rear cover plate 3 is fixedly connected to the other end surface of the housing 1 by a screw.

When the utility model is implemented, as shown in fig. 1-6, the worm wheel inner hole spline in the new structure automobile brake clearance automatic adjusting arm is sleeved on the cam shaft end of the automobile brake system, the positioning plate is fastened with the air chamber bracket, when the braking is started, the automatic adjusting arm pushes out the direction movement to the air chamber push rod, the positioning plate drives the driving gear to rotate relative to the shell, the driving gear drives the driven gear, the driven gear firstly passes through the matching clearance arranged with the clutch shaft, the clearance is the normal brake clearance of the automatic adjusting arm, when the braking has the excessive clearance, the driven gear continuously drives the clutch shaft to rotate through the matching clearance arranged with the clutch shaft, at the moment, the one-way needle bearing in the clutch component is in the separation state, the clutch component in the state records the brake excessive clearance, when the brake is in the return stroke, the automatic adjusting arm moves towards the return direction of the air, the positioning plate drives the driving gear to rotate relative to the shell, the driving gear drives the driven gear, the driven gear firstly passes through a matching gap arranged between the driven gear and the clutch shaft, when braking continues to return, the driven gear continues to drive the clutch shaft to rotate through the matching gap arranged between the driven gear and the clutch shaft, at the moment, the one-way needle roller bearing in the clutch assembly is in a joint state, the clutch shaft can drive the driving helical gear to rotate through the jointed needle roller bearing, the driving helical gear drives the worm shaft to rotate, the worm shaft drives the worm to rotate, the worm drives the worm wheel to rotate, and one-time excess gap adjustment is.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims

1. The utility model provides an automobile brake clearance automatic adjustment arm device which characterized in that: comprises a shell (1), a front cover plate assembly (2), a rear cover plate (3), a worm wheel (4), a worm (5), a clutch assembly (6) and a worm shaft (7), wherein the front cover plate assembly (2) comprises a positioning plate (201), a front cover plate (202) and a driving gear (203), the front cover plate (202) is fixedly connected with the shell (1) through bolts, the driving gear (203) penetrates through a hole of the front cover plate (202) and is fixed with the positioning plate (201) through riveting, the driving gear (203) can rotate along with the positioning plate (201), the worm wheel (4) and the worm (5) are mutually meshed and are arranged in the shell (1), the clutch assembly (6) is arranged in the shell (1), and the clutch assembly (6) comprises a driven gear (601), a driving helical gear (602), a one-way needle bearing (603), a clutch sleeve (604), a clutch shaft (605) and a pressure spring (606), the driven gear (601) is meshed with a driving gear (203) in the front cover plate assembly (2), a flat square hole (607) is formed in one end of the clutch shaft (605), and a worm shaft helical gear (701) is arranged in the shaft diameter of the worm shaft (7).

2. The automatic adjusting arm device for the brake clearance of the automobile according to claim 1, wherein: the flat square hole (607) is matched with the special-shaped inner hole of the driven gear (601) and is provided with a free clearance, the clutch shaft (605) is pressed along the direction of the driving helical gear (602), is separated from the driven gear (601) after being pressed, and can rebound through the pressure spring to be transmitted with the driven gear (601) again.

3. The automatic adjusting arm device for the brake clearance of the automobile according to claim 1, wherein: the worm shaft (7) is in interference fit with an inner hole of the worm (5), the worm shaft helical gear (701) is meshed with the driving helical gear (602) in the clutch assembly, and the rear cover plate (3) is fixedly connected with the other end face of the shell (1) through a screw.