CN216102356U

CN216102356U - Worm for automobile steering device

Info

Publication number: CN216102356U
Application number: CN202120847404.XU
Authority: CN
Inventors: 龚慧; 万兰
Original assignee: Shanghai Halong Automobile Standard Part Co ltd
Current assignee: Shanghai Halon Technology Co ltd
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2022-03-22
Anticipated expiration: 2031-04-23

Abstract

The utility model belongs to the technical field of worms, and discloses a worm for an automobile steering gear, which comprises a shell, wherein the interior of the shell is rotatably connected with the worm, the bottom end of the shell, which is positioned at the worm, is provided with a chute, the interior of the chute is slidably connected with a steering slide bar, the top end of the steering slide bar is meshed with the worm, the bottom end of the steering slide bar is meshed with a worm wheel, and the worm wheel is rotatably connected with the interior of the shell. Thereby, the surface wear of the worm wheel is reduced.

Description

Worm for automobile steering device

Technical Field

The utility model belongs to the technical field of worms, and discloses a worm for an automobile steering gear.

Background

The worm usually cooperates with the worm wheel to run, transmit movement and power between two staggered axles through worm and worm wheel, the worm wheel and worm are equivalent to gear and rack in its middle plane, the worm is similar to the shape of the threaded spindle; present auto steering ware mainly drives the worm wheel by the worm and rotates relatively, and the worm wheel rotates to certain angle after, can stop to continue to rotate to this direction to make the worm stall through the rodent, but the worm still is in running state, and still can have the dynamics of extrusion worm wheel, thereby increase the surface wear of worm and worm wheel.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a worm for an automobile steering gear, which aims to solve the problems that the worm can keep power transmission and increase the abrasion between a worm wheel and the worm when the rotation angle of the worm wheel reaches the limit in the existing automobile steering gear.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a worm for auto steering ware, includes the casing, the inside of casing rotates and is connected with the worm, the casing is located the bottom of worm and has seted up the spout, the inside sliding connection of spout has the steering slide bar, the top that turns to the slide bar is connected with the worm meshing, the bottom meshing that turns to the slide bar is connected with the worm wheel, the worm wheel is connected with the inside rotation of casing, the stria has all been seted up to the inside both sides of spout, two the inside of stria all rotates and is connected with a plurality of balls, every the ball all rotates with the steering slide bar and is connected.

Preferably, the springs are installed at two ends of the adjacent fine grooves of the steering slide bar, the two springs are far away from one end of the steering slide bar, the extrusion plates are installed at one ends of the springs, the two extrusion plates are located inside the sliding groove, and the two extrusion plates are connected with the sliding groove in a sliding mode.

Preferably, clamping grooves are formed in two sides of the adjacent extrusion plates of the steering slide rod and are respectively in sliding connection with each ball.

Preferably, one side of the worm gear adjacent to the extrusion plate is fixedly connected with a rocker arm shaft, and the rocker arm shaft is rotatably connected with the shell.

Preferably, the bottom and the top of casing have all been seted up the feed liquor hole, two the feed liquor downthehole portion all opens and shuts and is connected with the piston.

Preferably, the both sides of casing all are provided with the bearing, two the surface of worm is all located to the bearing cover, and two bearings all rotate with the worm and be connected, the inner wall of casing scribbles the lubricant coating.

Compared with the prior art, the utility model has the beneficial effects that:

(1) the shell is internally provided with the sliding groove, the steering sliding rod and the ball are arranged in the sliding groove, the worm drives the steering sliding rod to horizontally move, the steering sliding rod drives the worm wheel to rotate, the steering sliding rod stops after being blocked by the inner wall of the sliding groove after moving for a certain distance, the worm continues to apply power to the steering sliding rod at the moment, but the steering sliding rod stops moving, and meanwhile, the worm wheel is not conducted by the power of the steering sliding rod to stop, so that the surface abrasion of the worm wheel is reduced.

(2) According to the utility model, the spring and the extrusion plate are arranged on the steering sliding block in the shell, the buffer area is formed by the elasticity of the spring, when the steering sliding block gradually extrudes the extrusion plate through the spring, the extrusion plate extrudes the inner wall of the chute, at the moment, the worm can continue to drive the steering sliding block to move only by increasing the rotating force, early warning is timely carried out according to the force change of the rotating worm, and the worm is stopped to rotate to the direction urgently, so that the steering sliding block is prevented from moving to the terminal point, the worm also continuously applies power to the direction, and the abrasion between the worm and the steering sliding block is reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the mating of the chute and housing of the present invention;

FIG. 3 is a front view of the steering slide bar of the present invention;

FIG. 4 is a schematic view of the housing and lubricant coating of the present invention in combination;

in the figure: 1-a shell; 2-a worm; 3-a bearing; 4-fine grooves; 5-a steering slide bar; 6-a piston; 7-liquid inlet hole; 8-rocker shaft; 9-a worm gear; 10-a chute; 11-a card slot; 12-a spring; 13-a stripper plate; 14-a ball bearing; 15-lubricating coating.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides the following technical solutions: a worm for an automobile steering gear comprises a shell 1, the interior of the shell 1 is rotatably connected with a worm 2, the bottom end, located on the worm 2, of the shell 1 is provided with a sliding groove 10, the interior of the sliding groove 10 is slidably connected with a steering slide bar 5, the top end of the steering slide bar 5 is meshed with the worm 2, the bottom end of the steering slide bar 5 is meshed with a worm wheel 9, the worm wheel 9 is rotatably connected with the interior of the shell 1, two sides of the interior of the sliding groove 10 are respectively provided with a fine groove 4, the interiors of the two fine grooves 4 are respectively rotatably connected with a plurality of balls 14, and each ball 14 is rotatably connected with the steering slide bar 5;

the worm 2 is used for transmitting power to drive the steering slide bar 5 to move in the sliding groove 10, the steering slide bar 5 is used for driving the worm wheel 9 to rotate, the worm wheel 9 is used for driving the rocker arm shaft 8 to rotate, the sliding groove 10 is used for reducing the friction force between the steering slide bar 5 and the inner wall of the sliding groove 10, and the fine groove 4 is used for limiting the moving range of the ball 14.

Furthermore, springs 12 are mounted at two ends of the adjacent fine groove 4 of the steering slide bar 5, extrusion plates 13 are mounted at one ends of the two springs 12 far away from the steering slide bar 5, the two extrusion plates 13 are both positioned in the sliding groove 10, and the two extrusion plates 13 are both connected with the sliding groove 10 in a sliding manner;

the spring 12 makes a buffer area exist between the steering slide bar 5 and the extrusion plate 13 through elasticity, and is used for gradually increasing the extrusion pressure degree when the steering slide bar 5 gradually approaches the extrusion plate 13, so as to increase the rotating power of the worm wheel 9, and the extrusion plate 13 is used for stabilizing the spring 12 and replacing the steering slide bar 5 to extrude the inner wall of the chute 10.

Specifically, two sides of the adjacent extrusion plates 13 of the steering slide bar 5 are both provided with clamping grooves 11, and the two clamping grooves 11 are respectively connected with each ball 14 in a sliding manner;

the clamping groove 11 limits the moving range of the steering slide bar 5 by contacting the ball 14, and avoids the dislocation between the steering slide bar 5 and the ball 14.

It is worth to be noted that one side of the worm wheel 9 adjacent to the extrusion plate 13 is fixedly connected with the rocker arm shaft 8, and the rocker arm shaft 8 is rotatably connected with the shell 1;

the rocker shaft 8 is used to transmit power of the rotation of the worm wheel 9 to other vehicle rotating equipment.

Further, liquid inlet holes 7 are formed in the bottom end and the top end of the shell 1, and pistons 6 are connected inside the two liquid inlet holes 7 in an opening and closing mode;

the liquid inlet hole 7 is used for inputting lubricating oil into the shell 1, and the piston 6 is used for blocking or opening the liquid inlet hole 7.

Specifically, two sides of the shell 1 are respectively provided with a bearing 3, the two bearings 3 are respectively sleeved on the surface of the worm 2, the two bearings 3 are respectively in rotating connection with the worm 2, and the inner wall of the shell 1 is coated with a lubricating coating 15;

the bearing 3 is used to reduce the friction between the worm 2 and the housing 1, and the lubricating coating 15 is used to improve the lubricity of the inner wall of the housing 1.

The working principle and the using process of the utility model are as follows: when the swing arm type automatic transmission is used, the worm 2 rotates and drives the steering slide rod 5 to move in the sliding groove 10, the steering slide rod 5 drives the worm wheel 9 to rotate, and the worm wheel 9 drives the swing arm shaft 8 to rotate;

when the steering slide bar 5 cannot move continuously due to the sliding groove 10, the steering slide bar 5 stops conducting the power generated by the rotation of the worm 2 to the worm wheel 9, and the worm wheel 9 stops rotating;

when the extrusion plate 13 on the steering slide bar 5 contacts the inner wall of the sliding chute 10, the steering slide bar 5 can continuously approach the extrusion plate 13 through the spring 12, the spring 12 gradually increases the extrusion force of the steering slide bar 5 approaching the extrusion plate 13 through elastic force so as to increase the rotating power of the worm 2, and the situation that the steering slide bar 5 moves towards one side and is about to reach the limit is known according to the change of the rotating power of the worm 2;

although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A worm for an automobile steering gear comprises a shell (1), and is characterized in that: the inside of casing (1) is rotated and is connected with worm (2), casing (1) is located the bottom of worm (2) and has been seted up spout (10), spout (10) inside sliding connection has and turns to slide bar (5), the top that turns to slide bar (5) is connected with worm (2) meshing, the bottom meshing that turns to slide bar (5) is connected with worm wheel (9), worm wheel (9) are connected with the inside rotation of casing (1), stria (4), two have all been seted up to the inside both sides of spout (10) the inside of stria (4) all rotates and is connected with a plurality of balls (14), every ball (14) all rotate with turning to slide bar (5) and be connected.

2. The worm screw for a steering gear of an automobile according to claim 1, wherein: turn to the both ends of the adjacent stria (4) of slide bar (5) and all install spring (12), two stripper plate (13) are all installed to the one end that turns to slide bar (5) is kept away from in spring (12), two stripper plate (13) all are located spout (10) inside, and two stripper plate (13) all with spout (10) sliding connection.

3. The worm screw for a steering gear of an automobile according to claim 2, wherein: clamping grooves (11) are formed in two sides of the adjacent extrusion plates (13) of the steering slide rod (5), and the two clamping grooves (11) are connected with each ball (14) in a sliding mode.

4. The worm screw for a steering gear of an automobile according to claim 2, wherein: one side of the worm wheel (9) adjacent to the extrusion plate (13) is fixedly connected with a rocker arm shaft (8), and the rocker arm shaft (8) is rotatably connected with the shell (1).

5. The worm screw for a steering gear of an automobile according to claim 1, wherein: liquid inlet holes (7) are formed in the bottom end and the top end of the shell (1), and pistons (6) are connected to the inside of the two liquid inlet holes (7) in an opening and closing mode.

6. The worm screw for a steering gear of an automobile according to claim 1, wherein: both sides of casing (1) all are provided with bearing (3), two the surface of worm (2) is all located in cover in bearing (3), and just two bearing (3) all rotate with worm (2) and be connected, the inner wall of casing (1) scribbles lubricant coating (15).