CN214008051U

CN214008051U - Sealing matching structure of steering engine shell and end cover

Info

Publication number: CN214008051U
Application number: CN202022766202.0U
Authority: CN
Inventors: 沈雨春; 季娟; 李伟; 戴培军
Original assignee: Bosch Huayu Steering Systems Co Ltd
Current assignee: Bosch Huayu Steering Systems Co Ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-08-20
Anticipated expiration: 2030-11-26

Abstract

The utility model belongs to the technical field of electric power steering machine technique and specifically relates to a sealed cooperation structure of steering casing body and end cover, including steering casing end cover, O type sealing washer, steering casing body, fixing bolt, bush, be equipped with the sealing washer mating groove on the axial mating surface that turns to the casing body, O type sealing washer is installed in sealing washer mating groove, and fixing bolt passes the shoulder hole or the waist type hole that turn to end cover surface, turns to the round hole on casing body surface and fixes. Compared with the prior art, the utility model, cancelled the casing boss, add sealing washer cooperation groove on the axial fitting surface that turns to the casing for installation O type sealing washer, and cooperation shoulder hole, waist type hole realize turning to the casing and turn to sealed between the quick-witted end cover. The utility model discloses simple structure is reliable, reduces 2% steering engine casing weight, makes manufacturing mould, assembly process simplify, is favorable to reduction in production cost.

Description

Sealing matching structure of steering engine shell and end cover

Technical Field

The utility model belongs to the technical field of electric power steering machine technique and specifically relates to a sealed cooperation structure of steering gear casing and end cover.

Background

Referring to fig. 1, 2, and 3, the conventional steering gear housing and end cover engagement requires the following parts: the steering engine comprises a steering engine end cover 1, an O-shaped sealing ring 2, a steering engine shell 3 and a fixing bolt 4. The steering gear shell 3 is provided with a shell matching surface 31 and a shell boss 32, the shell boss 32 is provided with a groove in the circumferential direction, and the groove is internally provided with an O-shaped sealing ring 2. An end cover matching surface 11 and an end cover groove 12 are arranged on the end cover 1 of the steering gear.

When the steering gear shell 3 is installed with the steering gear end cover 1, the steering gear shell 3 provided with the O-shaped sealing ring 2 is installed in the end cover groove 12 in a guiding mode through the shell boss 32. The cooperation of the two is interference fit, and the O-shaped sealing ring 2 deforms after being pressed and extruded. When the shell and the end cover are installed, the shell matching surface 31 is matched with the end cover matching surface 11 and then connected through the fixing bolt 4, and the shell matching surface 31 is tightly attached to the end cover matching surface 11. The matching structure of the existing steering gear shell and the end cover is complex, so that the weight and the cost of the product are difficult to reduce.

Therefore, a sealing matching structure of the steering gear shell and the end cover needs to be designed, and the structure is simplified on the premise of ensuring the sealing performance between the shell and the end cover, so that the purposes of cost reduction and efficiency improvement are achieved.

Disclosure of Invention

The utility model aims at overcoming the not enough of prior art, provide a sealed cooperation structure of steering gear casing and end cover, under the prerequisite of the sealing performance between assurance casing and the end cover, simplify the structure to reach the purpose of cost reduction increase.

In order to achieve the purpose, the utility model relates to a sealed cooperation structure of steering gear casing and end cover, including steering gear end cover, O type sealing washer, steering gear casing, fixing bolt, bush, be equipped with sealing washer cooperation groove on the axial cooperation face of steering gear casing, O type sealing washer is installed in sealing washer cooperation inslot, and fixing bolt passes the shoulder hole or the waist type hole on steering gear end cover surface, turns to the round hole and fixed on the casing surface.

The top of the end cover of the steering engine is provided with a stepped hole, and the bushing is sleeved outside the fixing bolt and is arranged in the stepped hole.

Two sides of the upper end of the end cover of the steering engine are respectively provided with a waist-shaped hole.

The inner surface of the round hole of the steering engine shell is provided with threads, and the steering engine shell is in threaded connection with the fixing bolt.

Compared with the prior art, the utility model, cancelled the casing boss, add sealing washer cooperation groove on the axial fitting surface that turns to the casing for installation O type sealing washer, and cooperation shoulder hole, waist type hole realize turning to the casing and turn to sealed between the quick-witted end cover. The utility model discloses simple structure is reliable, reduces 2% steering engine casing weight, makes manufacturing mould, assembly process simplify, is favorable to reduction in production cost.

Drawings

Fig. 1 is a schematic structural diagram of the prior art.

Fig. 2 is a schematic structural diagram of a housing in the prior art.

Fig. 3 is a schematic view of a prior art end cap structure.

Fig. 4 is a schematic structural diagram of the present invention.

Fig. 5 is a cross-sectional view of the present invention.

Fig. 6 is a schematic view of the surface of the end cap of the present invention.

Detailed Description

The invention will now be further described with reference to the accompanying drawings.

Referring to fig. 4, fig. 5, fig. 6, the utility model relates to a sealed cooperation structure of steering gear casing and end cover, including steering gear end cover, O type sealing washer, steering gear casing, fixing bolt, bush, be equipped with sealing washer cooperation groove 9 on the axial cooperation face of steering gear casing 3, O type sealing washer 2 is installed in sealing washer cooperation groove 9, and fixing bolt 4 passes the shoulder hole 6 or the waist type hole 7 that turn to 1 surface of steering gear end cover, turns to the round hole on 3 surfaces of steering gear casing and fixes.

The utility model discloses in, the top of steering gear end cover 1 is equipped with

shoulder hole

6, and 5 covers of bush are established outside fixing bolt 4 to install in shoulder hole 6. Two sides of the upper end of the end cover 1 of the steering gear are respectively provided with a kidney-shaped hole 7.

The inner surface of the round hole of the steering engine shell 3 is provided with threads, and the steering engine shell 3 is in threaded connection with the fixing bolt 4.

The utility model discloses when the assembly, at first, during 5 half inserts the round hole that turns to casing 3 the top, after 5 other half bushes of insert in the shoulder hole 6 that turns to machine end cover 1, turn to casing 3 and turn to machine end cover 1 and realize tentatively fixing a position. The steering gear cover 1 can rotate around the stepped hole 6. The round hole at the uppermost end of the steering engine shell 3 is aligned with the stepped hole 6 of the steering engine end cover 1, and the steering engine shell 3 and the steering engine end cover 1 are pre-fastened after the fixing bolt 4 is inserted into the stepped hole 6.

Then, the axial positioning of the steering engine shell 3 and the steering engine end cover 1 needs to be ensured by two kidney-shaped holes 7 on the steering engine end cover 1, the kidney-shaped holes 7 are used for slightly rotating the position of the steering engine end cover 1, and the fixing bolt 4 is ensured to be inserted into the kidney-shaped hole 7 on the steering engine end cover 1 and can be just matched with the round hole on the steering engine shell 3. After the steering engine shell 3 and the steering engine end cover 1 are fixed by the 3

fixing bolts

4, 3 holes are limited mutually, and the steering engine shell 3 and the steering engine end cover 1 cannot move in the radial direction or the axial direction. After 3 fixing bolt 4 are twisted completely, the bolt provides fastening force, and fastening force acts on fitting surface 8 that turns to quick-witted end cover 1, and O type sealing washer 2 on the 8 atress extrusion casing sealing surfaces of fitting surface, O type sealing washer 2 receive pressure deformation to guarantee that casing fitting surface and end cover fitting surface are sealed, can not have inside outside dust and the liquid entering.

The utility model reduces the weight of the steering machine shell 3 by 2 percent, which is beneficial to simplifying the manufacturing mould of the steering machine shell 3, thereby reducing the production cost of the steering machine shell 3; when a supplier supplies the steering engine shell 3, the assembly of the O-shaped sealing ring 2 and the lining 5 can be completed, the original station of the general assembly line is cancelled, and the production beat is favorably promoted; in order to realize the assembly robustness of the steering engine shell 3 and the steering engine end cover 1, the kidney-shaped holes 7 can be realized on a blank of the steering engine end cover 1, the two kidney-shaped holes 7 do not need to be machined, and the manufacturing cost of the steering engine end cover 1 can be reduced.

The utility model discloses cancelled the casing boss, add sealing washer cooperation groove 9 on the axial fitting surface of steering gear casing body 3 for installation O type sealing washer 2, and cooperation shoulder hole 6, waist type hole 7 realize steering gear casing body 3 and the sealed between the steering gear end cover 1. The utility model discloses simple structure is reliable, reduces 2% steering engine casing 3 weight, makes manufacturing mould, assembly process simplify, is favorable to reduction in production cost.

Claims

1. The utility model provides a sealed cooperation structure of steering engine casing and end cover, is including steering engine end cover, O type sealing washer, steering engine casing, fixing bolt, bush, its characterized in that: a sealing ring matching groove (9) is formed in the axial matching surface of the steering engine shell (3), an O-shaped sealing ring (2) is installed in the sealing ring matching groove (9), and a fixing bolt (4) penetrates through a stepped hole (6) or a waist-shaped hole (7) in the surface of the steering engine end cover (1) and a round hole in the surface of the steering engine shell (3) and is fixed.

2. A seal engagement structure of a steering housing and an end cover according to claim 1, wherein: the steering engine end cover is characterized in that a stepped hole (6) is formed in the top of the steering engine end cover (1), and a bushing (5) is sleeved outside the fixing bolt (4) and is installed in the stepped hole (6).

3. A seal engagement structure of a steering housing and an end cover according to claim 1, wherein: two sides of the upper end of the end cover (1) of the steering gear are respectively provided with a waist-shaped hole (7).

4. A seal engagement structure of a steering housing and an end cover according to claim 1, wherein: the inner surface of the round hole of the steering engine shell (3) is provided with threads, and the steering engine shell (3) is in threaded connection with the fixing bolt (4).