CN213323329U

CN213323329U - Vehicle and steering system and steering engine thereof

Info

Publication number: CN213323329U
Application number: CN202021297943.2U
Authority: CN
Inventors: 冯明飞; 张学俭
Original assignee: Bosch Automotive Steering Jinan Co Ltd
Current assignee: Bosch Automotive Steering Jinan Co Ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-06-01
Anticipated expiration: 2030-07-06

Abstract

The application provides a steering engine, including the pneumatic cylinder, the pneumatic cylinder includes open-ended cylinder body, sealed cylinder body end opening's end cover and fixes the end cover at open-ended elastic mounting of having of cylinder body end. The inner circumferential surface of the cylinder body is provided with a groove, the fixing piece is arranged in the groove, and the end cover is clamped in the cylinder body. This application establishes fixedly through having elastic mounting card inside placing the end cover at the cylinder body, and assembly process is simple, and is with low costs.

Description

Vehicle and steering system and steering engine thereof

Technical Field

The present application relates to a steering system of a vehicle, and more particularly, to a steering gear of a steering system.

Background

Referring to fig. 5, a steering gear of a conventional vehicle steering system includes a hydraulic cylinder 1, a cylinder body 11 is disposed in the hydraulic cylinder 1, an opening is disposed at an end of the cylinder body 11, and an end cap 12 is fixed to the opening at the end of the cylinder body 11 by a bolt 13 to seal the cylinder body. Since the load is large, a plurality of bolts 13, for example, 6 bolts, are required, and the manufacturing cost is high. And, make the corresponding quantity of screw holes on the pneumatic cylinder 1, the process is complicated.

SUMMERY OF THE UTILITY MODEL

The steering engine mainly solves at least one technical problem that an existing steering engine is complex in process and high in cost.

In order to solve the technical problem, the application provides a steering engine, which comprises a hydraulic cylinder, wherein the hydraulic cylinder comprises a cylinder body with an open end, an end cover for sealing the open end and a fixing piece for fixing the end cover at the open end of the cylinder body.

The groove is a ring groove, and the fixing piece is a clamping ring.

The snap ring is circular along axial cross section, the annular has first arc surface, works as after the pneumatic cylinder equipment is accomplished, at least part of first arc surface with the snap ring laminating.

The end cover is provided with an inclined plane facing the clamping ring, and when the hydraulic cylinder is assembled, at least one part of the inclined plane is attached to the clamping ring.

The inclined plane is provided with a second arc surface, and the second arc surface is attached to the clamping ring.

The clamping ring comprises a fracture, at least one end of the fracture is provided with a matching surface, and the clamping ring is matched with the process assembly device through the matching surface and is installed to the annular groove after being compressed along the circumferential direction.

The cylinder body is provided with bulges on the outer circumferential surface corresponding to the grooves.

The inner circumferential surface of the cylinder body is provided with a first abutting surface facing the end opening, the outer circumference of the end cover is provided with a second abutting surface facing away from the end opening, and after the hydraulic cylinder is assembled, the first abutting surface and the second abutting surface are matched oppositely to limit the movement of the end cover in the direction of the cylinder body away from the end opening.

According to the technical scheme of this application, the end cover of the pneumatic cylinder of steering gear passes through the snap ring card to be established and seals the cylinder body inside the cylinder body, and assembly process is simple. And, because need not to use a plurality of bolt fixings, cost reduction.

Drawings

Specific embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein:

fig. 1 shows a partial structural schematic view of a hydraulic cylinder of a steering machine according to the present application;

fig. 2 shows a partially enlarged structural view at a hydraulic cylinder D of the steering gear shown in fig. 1;

FIG. 3 shows a schematic view of an end cover of a hydraulic cylinder of a steering engine according to the present application;

FIG. 4 shows a schematic view of a snap ring of a hydraulic cylinder of a steering gear according to the present application; and

fig. 5 shows a schematic view of a prior art steering gear.

Detailed Description

Referring to fig. 1 to 4, a steering gear according to an embodiment of the present invention includes a hydraulic cylinder 100, and the hydraulic cylinder 100 includes a cylinder body 110, an end cover 120, and a snap ring 130. The cylinder 110 has an end opening 1104 and the end cap 120 is snapped into the cylinder 130 via the snap ring 130 proximate the end opening 1104 for sealing the cylinder. In other embodiments, the end cap 120 may be fastened to the inside of the cylinder 130 near the end opening by other types of fasteners. Also, in the present embodiment, the end cap 120 is completely disposed inside the cylinder 130, and in other embodiments, a portion of the end cap 120 is disposed inside the cylinder 130.

The snap ring 130 is made of an elastic material, such as spring steel. The snap ring 130 is a generally circular ring having a circular cross section in the axial direction. An annular groove 1101 is formed on the inner circumferential surface of the cylinder block 110 near the end opening 1104 through a milling process or the like, and the cross section of the annular groove 1101 in the axial direction is arc-shaped, that is, the annular groove has a first arc surface 11011. When the snap ring 130 is assembled to the ring groove 1101, the snap ring 130 is attached to the first arc surface 11011. The outer circumferential surface of the cylinder block 110 is provided with the bulge 1103 at a position corresponding to the ring groove 1101, so the wall thickness of the cylinder block 110 as a whole is uniform, and therefore the ring groove 1101 can withstand a larger load.

The end cap 120 is provided with a slope 1201 on an outer circumferential surface thereof, and the slope 1201 faces the snap ring 130. The end of the ramp 1201 that engages the collar 130 is spaced further from the end opening 1104 of the cylinder block 110 than the other end. When the snap ring 130 is assembled, a larger assembly space is obtained due to the presence of the inclined surface 1201. The inclined surface 1201 is provided with a second arc surface 12011, and the second arc surface 1201 is matched with the clamping ring 130. After the hydraulic cylinder 110 is assembled, the snap ring 130 is tightly attached to the first arc surface 11011 of the ring slot 1101 and the second arc surface 12011 of the end cover 120 because of its elasticity. When the high-pressure oil in the cylinder 110 acts on the end cover 120 in the direction a shown in fig. 1, the end cover 120 receives a load in the direction a, and the load is transmitted and finally acts on the snap ring 130. Because the snap ring 130 is elastic and has a circular axial cross section, the first arc surface 11011 of the ring groove 1101 and the second arc surface 12011 of the end cover 120 are attached to the snap ring 130 by arc surfaces, the load borne by the snap ring 130 is uniformly distributed on the circumferential surface, and the borne loads are all directed to the center of the circular cross section, as shown by arrows in fig. 2, the snap ring 130 bears the mutual extrusion of the ring groove 1101 and the end cover 120, so that the snap ring 130 having a circular axial cross section can bear a higher load than that of the snap ring 130 having another shape, such as a rectangle, and the end cover 120 can be fixed to the cylinder body 110 even under the action of high-pressure oil.

The snap ring 130 has a fracture 1301, and one end portion of the fracture is provided with a mating surface 1302 to be mated with a process kit, and the snap ring 130 can be mounted into the ring groove 1101 of the cylinder block 110 by being fitted with the process kit after being compressed in the circumferential direction through the opening 1301 and the mating surface 1302.

The inner circumferential surface of the cylinder 110 is provided with a first abutment surface 1102 facing the end opening 1104, the outer circumferential surface of the end cap 120 is provided with a second abutment surface 1202 facing away from the end opening 1104, and when the end cap 120 is fitted into the cylinder 110, the first abutment surface 1102 and the second abutment surface 1202 abut against each other, restricting the position of the end cap 120 within the cylinder, i.e., restricting the movement of the end cap 120 in the B direction.

The hydraulic cylinder 100 of the steering engine according to an embodiment of the present application is assembled by: the end cap 120 is first assembled into the cylinder block 100 along the end opening 1104 of the cylinder block 110 until the second abutment surface 1202 of the end cap 120 abuts the first abutment surface 1102 of the cylinder block 110, and then the snap ring 130 is compressed in the circumferential direction by the process assembly device and placed into the ring groove 1101. Due to the elasticity of the snap ring 130, the end cap 120 is secured to the end opening 1104 of the cylinder block 110 via the snap ring 130, sealing the cylinder block 110.

Compared with the prior art that a plurality of threaded holes are manufactured in the hydraulic cylinder, according to the application, the annular groove 1101 is only required to be manufactured on the inner circumferential surface of the cylinder body 110 through milling and other processes, and the manufacturing process is simple. Because the end cover 120 is clamped inside the cylinder body 110 of the hydraulic cylinder by the clamping ring 130, a plurality of bolts do not need to be assembled, the assembling process is simple, and the cost is low.

Notwithstanding the foregoing, the scope of protection of the present application is defined by the claims.

Claims

1. The steering engine comprises a hydraulic cylinder (100), wherein the hydraulic cylinder (100) comprises a cylinder body (110) with an opening at the end part, an end cover (120) for sealing the opening at the end part and a fixing piece for fixing the end cover (120) at the opening at the end part of the cylinder body (110), and is characterized in that a groove is formed in the inner circumferential surface of the cylinder body (110), the fixing piece has elasticity, and the fixing piece is arranged in the groove and clamps the end cover (120) in the cylinder body (110) close to the opening at the end part.

2. The steering gear according to claim 1, wherein said groove is an annular groove (1101) and said fixing member is a snap ring (130).

3. The steering gear according to claim 2, wherein the snap ring (130) has a circular cross section in the axial direction, the ring groove (1101) has a first arc surface (11011), and when the hydraulic cylinder (100) is assembled, at least a part of the first arc surface (11011) is fitted to the snap ring (130).

4. The steering engine of claim 2, wherein the end cap (120) has a ramp surface (1201) facing a snap ring (130), and when the hydraulic cylinder (100) is assembled, at least a portion of the ramp surface (1201) distal to the end opening of the cylinder block (110) engages the snap ring (130).

5. The steering engine according to claim 4, wherein the inclined surface (1201) is provided with a second circular arc surface (12011), and the second circular arc surface (12011) is attached to the snap ring (130).

6. The steering gear according to claim 2, wherein the snap ring (130) comprises a break (1301), at least one end of the break (1301) is provided with a mating surface, and the snap ring (130) is fitted to the ring groove (1101) after being fitted to a process equipment device through the mating surface (1302) and compressed in a circumferential direction.

7. The steering machine according to claim 1, wherein the cylinder block (110) is provided with bulges (1103) at the corresponding outer circumferential surface of the groove.

8. The steering engine according to claim 1, wherein the inner circumferential surface of the cylinder body (110) is provided with a first abutting surface (1102) facing the end opening, the outer circumference of the end cover (120) is provided with a second abutting surface (1202) facing away from the end opening, and when the hydraulic cylinder (100) is assembled, the first abutting surface (1102) and the second abutting surface (1202) are matched oppositely to limit the movement of the end cover (120) in the direction of the cylinder body (110) away from the end opening.

9. A steering system of a vehicle, characterized by comprising the steering gear according to any one of claims 1 to 8.

10. A vehicle characterized by comprising a steering system of the vehicle according to claim 9.