CN219056367U

CN219056367U - Long service life's car steering gear

Info

Publication number: CN219056367U
Application number: CN202223383191.3U
Authority: CN
Inventors: 张帆; 郑榴龙; 林港涛
Original assignee: Hangzhou Tiantai Automotive Parts Manufacturing Co ltd
Current assignee: Hangzhou Tiantai Automotive Parts Manufacturing Co ltd
Priority date: 2022-12-16
Filing date: 2022-12-16
Publication date: 2023-05-23
Anticipated expiration: 2032-12-16

Abstract

The utility model discloses an automobile steering gear with long service life, which comprises: the automobile steering gear comprises a rack shaft and a supporting mechanism, wherein a mounting groove is formed in the rack shaft, a rack is fixedly welded on the mounting groove, a gear shaft is arranged above the rack shaft and is rotationally connected in an automobile steering gear shell, a gear is fixedly arranged on the gear shaft, the gear is meshed with the rack, and the supporting mechanism is arranged on the gear shaft. According to the utility model, under the cooperation of the rotating bearing, the connecting seat, the telescopic rod and the tension spring, the tension of the tension spring acts on the base, so that the base keeps being subjected to upward tension, the rotating rod and the idler wheel are pressed on the rack shaft, the rack shaft drives the rack to be fully meshed and connected on the gear, and the problem that the gear and the rack in the gear-rack type steering gear of the automobile are easy to generate meshing gaps due to factors such as vibration and shaking of the automobile body and are worn after long-time use is avoided.

Description

Long service life's car steering gear

Technical Field

The utility model relates to the technical field of automobile steering gears, in particular to an automobile steering gear with long service life.

Background

With the rapid development of economy, automobiles have become an indispensable transportation means in people's life. The steering gear of the automobile is an important component of the automobile, and the main functions of the steering gear are to change the driving direction of the automobile and keep the automobile stably and linearly driving. The steering gear is an executive component of hydraulic power assistance of a steering system, mainly changes the rotation of a steering wheel into the linear motion of a rack shaft or the swing of a steering rocker arm, reduces the motion speed, increases the steering moment and changes the rotation direction of the steering moment, and has various types, such as a gear-rack type steering gear, a recirculating ball type steering gear, a worm crank finger type steering gear and the like.

The rack-and-pinion steering gear is a steering gear widely applied to automobiles at home and abroad at present, in the long-term running process of the automobile, due to factors such as vibration and shaking of the automobile body, meshing gaps are easily generated between gears and racks in the rack-and-pinion steering gear of the automobile, and long-term use can cause abrasion of the racks, so that the service life of the automobile steering gear is influenced.

Disclosure of Invention

The utility model aims to provide an automobile steering gear with long service life, so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: an automotive steering gear having a long service life, comprising:

the rack shaft is movably arranged in the automobile steering gear shell, a mounting groove is formed in the rack shaft, a rack is fixedly welded on the mounting groove, a gear shaft is arranged above the rack shaft, the gear shaft is rotationally connected in the automobile steering gear shell, a gear is fixedly arranged on the gear shaft, and the gear is meshed with the rack;

and the supporting mechanism is arranged on the gear shaft.

Preferably, the supporting mechanism comprises two rotating bearings, the two rotating bearings are symmetrically arranged on two sides of the gear, the two rotating bearings are all rotationally connected on the gear shaft, the two rotating bearings are all provided with connecting seats, the two bottom sides of the connecting seats are fixedly provided with a pair of telescopic rods, and the two bottom ends of the telescopic rods are fixedly provided with bases.

Preferably, the telescopic rod is sleeved with a tension spring, and two ends of the tension spring are fixedly connected with the connecting seat and the base respectively.

Preferably, one side of the base, which is close to the rack shaft, is rotatably connected with a pair of rotating rods, and one end, which is far away from the base, of the rotating rods is fixedly provided with a roller.

Preferably, the surface of the rack shaft is provided with two sliding grooves, and the two pairs of rollers are respectively connected to the two sliding grooves in a rolling way.

Preferably, both ends of the telescopic rod are respectively and fixedly arranged on the connecting seat and the base through fastening screws.

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

when the automobile steering gear is used, when the gear and the rack generate meshing gaps due to the factors of vibration, shaking and the like of an automobile body, the base keeps being subjected to upward tension by the tension of the tension spring under the cooperation of the rotating bearing, the connecting seat, the telescopic rod and the tension spring, so that the rotating rod and the idler wheel are pressed on the rack shaft, the rack shaft drives the rack to be fully meshed and connected on the gear, the problem that the service life of the automobile steering gear is influenced due to the fact that the gear and the rack in the gear-rack type steering gear of the automobile are easy to generate meshing gaps due to the factors of vibration, shaking and the like of the automobile body and the problem that the rack is worn due to long-time use is solved, and the service life of the automobile steering gear is greatly prolonged.

Drawings

FIG. 1 is a schematic perspective view of an automobile steering gear with long service life;

FIG. 2 is a perspective view of a connecting seat and a telescopic rod in an automobile steering gear with long service life;

fig. 3 is a perspective view of a rack shaft and rack connection in an automobile steering gear with long service life according to the present utility model.

In the figure: 1. a rack shaft; 2. a mounting groove; 3. a rack; 4. a gear shaft; 5. a gear; 6. a rotating bearing; 7. a connecting seat; 8. a telescopic rod; 9. a base; 10. a tension spring; 11. a chute; 12. a rotating lever; 13. and a roller.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present utility model provides a technical solution: an automotive steering gear having a long service life, comprising:

the rack shaft 1 is movably arranged in an automobile steering gear shell, an installation groove 2 is formed in the rack shaft 1, a rack 3 is fixedly welded on the installation groove 2, a gear shaft 4 is arranged above the rack shaft 1, the gear shaft 4 is rotatably connected in the automobile steering gear shell, a gear 5 is fixedly arranged on the gear shaft 4, and the gear 5 is meshed and connected with the rack 3;

and a support mechanism arranged on the gear shaft 4.

The supporting mechanism comprises two rotating bearings 6, wherein the two rotating bearings 6 are symmetrically arranged on two sides of a gear 5, the two rotating bearings 6 are all rotationally connected to a gear shaft 4, the two rotating bearings 6 are respectively provided with a connecting seat 7, the bottom sides of the connecting seats 7 are respectively fixedly provided with a pair of telescopic rods 8, the bottom ends of the telescopic rods 8 are respectively fixedly provided with a base 9, and the bases 9 can move up and down through the arranged pair of telescopic rods 8.

The telescopic rod 8 is sleeved with a tension spring 10, two ends of the tension spring 10 are fixedly connected with the connecting seat 7 and the base 9 respectively, and the tension of the tension spring 10 acts on the base 9, so that the base 9 is kept under upward tension.

The base 9 is connected with a pair of rotating rods 12 in a rotating way on one side close to the rack shaft 1, one end, far away from the base 9, of each rotating rod 12 is fixedly provided with a roller 13, and the rollers 13 can rotate on the base 9 through the cooperation of the rotating rods 12 and the base 9.

Two sliding grooves 11 are formed in the surface of the rack shaft 1, two pairs of rollers 13 are respectively connected to the two sliding grooves 11 in a rolling mode, the rollers 13 can roll in the sliding grooves 11, and the up-down limiting of the rack shaft 1 is achieved, and meanwhile the rack shaft 1 is not prevented from sliding back and forth.

The two ends of the telescopic rod 8 are respectively and fixedly arranged on the connecting seat 7 and the base 9 through fastening screws, so that the telescopic rod 8 is convenient to disassemble and assemble, and the tension spring 10 is convenient to replace.

Working principle: according to the utility model, the gear 5 is driven to rotate by the gear shaft 4, the gear 3 is driven to slide by meshing with the gear 3, so that the gear shaft 1 is driven to move, when the gear 5 and the gear 3 generate meshing gaps with the gear and the gear in the rack-and-pinion steering gear of the automobile due to factors such as vibration and shaking of the automobile body, the base 9 is kept to be subjected to upward tension by the tension of the tension spring 10 under the cooperation of the rotating bearing 6, the connecting seat 7, the telescopic rod 8 and the tension spring 10, so that the rotating rod 12 and the roller 13 are pressed on the gear shaft 1, the gear shaft 1 drives the gear 3 to be fully meshed and connected with the gear 5, the gear 5 and the gear 3 in the rack-and-pinion steering gear of the automobile are prevented from generating meshing gaps easily due to vibration and shaking of the automobile body, the problem that the service life of the automobile steering gear is influenced due to abrasion of the gear rack caused by long-time use is greatly improved.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein 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. An automobile steering gear with long service life, comprising:

the rack shaft (1), rack shaft (1) movable mounting is in the car steering gear casing, set up mounting groove (2) on rack shaft (1), fixedly welded on mounting groove (2) has rack (3), rack shaft (4) are provided with above rack shaft (1), gear shaft (4) rotate and connect in the car steering gear casing, fixed mounting has gear (5) on gear shaft (4), gear (5) with rack (3) meshing is connected;

and the supporting mechanism is arranged on the gear shaft (4).

2. A long life automotive steering gear according to claim 1, wherein: the supporting mechanism comprises two rotating bearings (6), wherein the two rotating bearings (6) are symmetrically arranged on two sides of the gear (5), the two rotating bearings (6) are all rotationally connected to the gear shaft (4), the two rotating bearings (6) are respectively provided with a connecting seat (7), the two bottom sides of the connecting seats (7) are respectively and fixedly provided with a pair of telescopic rods (8), and the two bottom ends of the telescopic rods (8) are respectively and fixedly provided with a base (9).

3. A long life automotive steering gear according to claim 2, wherein: the telescopic rod (8) is sleeved with a tension spring (10), and two ends of the tension spring (10) are fixedly connected with the connecting seat (7) and the base (9) respectively.

4. A long life automotive steering gear according to claim 2, wherein: one side of the base (9) close to the rack shaft (1) is rotatably connected with a pair of rotating rods (12), and one end, far away from the base (9), of each rotating rod (12) is fixedly provided with a roller (13).

5. A long life automotive steering gear according to claim 4, wherein: two sliding grooves (11) are formed in the surface of the rack shaft (1), and two pairs of rollers (13) are respectively connected to the two sliding grooves (11) in a rolling mode.

6. A long life automotive steering gear according to claim 2, wherein: the two ends of the telescopic rod (8) are respectively and fixedly arranged on the connecting seat (7) and the base (9) through fastening screws.