CN216185428U

CN216185428U - Steering gear shell and steering gear

Info

Publication number: CN216185428U
Application number: CN202122306952.4U
Authority: CN
Inventors: 朱川峰
Original assignee: Jinjihu Precision Machienry Wuhan Co ltd
Current assignee: Jinjihu Precision Machienry Wuhan Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-04-05
Anticipated expiration: 2031-09-23

Abstract

A steering gear shell comprises a first shell and a second shell, and the second shell is detachably connected with the first shell. The first shell comprises a first connecting end, a first protruding portion is arranged on the outer peripheral side of the first connecting end, the second shell comprises a second connecting end, the first connecting end and the second connecting end are coaxially arranged, a second protruding portion is arranged on the outer peripheral side of the second connecting end, and the steering gear shell further comprises a fastening piece which is connected with the first protruding portion and the second protruding portion. The steering gear shell is formed by splicing the first shell and the second shell through the first protruding portion, the second protruding portion and the fastening piece, so that the steering gear shell with a complex structure can be disassembled and assembled into a two-section structure with a relatively simple structure, the manufacturing process of each part of the steering gear shell is simplified, the manufacturing difficulty of the steering gear shell is reduced, and the production efficiency is improved.

Description

Steering gear shell and steering gear

Technical Field

The application relates to the field of mechanical equipment, in particular to a steering gear shell and a steering gear with the same.

Background

The appearance structure of steering gear casing is complicated, mostly is integral type dysmorphism structure, and has a plurality of irregularly shaped surfaces. The general manufacturing method of the steering gear shell is that a rough-formed product of the shell is obtained by casting and die-casting forming processes, and then the steering gear shell is subjected to finish machining in a numerical control machining (CNC) mode, however, for a workpiece with a complex overall structure of the steering gear shell, the cost of the casting and die-casting forming processes is high in the early stage and long in delivery period, four-axis/five-axis CNC is often needed in the subsequent CNC machining process to implement the machining process, the stroke of equipment is required to be large, machining limitation is more, and the production efficiency of the integrated steering gear shell is restricted.

SUMMERY OF THE UTILITY MODEL

In view of the above situation, the present application provides a steering gear housing and a steering gear having the same, the first housing and the second housing are spliced to form a complete steering gear housing through the first protrusion, the second protrusion and the fastening member, so that the steering gear housing with a complex structure is formed into a two-stage structure which is relatively simple in structure, the manufacturing process of each part of the steering gear housing is simplified, the manufacturing difficulty of the steering gear housing is reduced, and the production efficiency is improved.

A steering gear housing includes a first housing and a second housing detachably connected to the first housing. The first shell comprises a first connecting end, a first protruding portion is arranged on the outer peripheral side of the first connecting end, the second shell comprises a second connecting end, the first connecting end and the second connecting end are coaxially arranged, a second protruding portion is arranged on the outer peripheral side of the second connecting end, and the steering gear shell further comprises a fastening piece which is connected with the first protruding portion and the second protruding portion.

In some embodiments, the first connecting end is provided with a first mounting groove, a first accommodating cavity is arranged in the first housing, the first accommodating cavity is communicated with the first mounting groove, a first step surface is formed at a joint of the first mounting groove and the first accommodating cavity, and the second connecting end is inserted into the first mounting groove and abuts against the first step surface.

In some embodiments, an end face of the first protruding portion is flush with an end face of the first connection end, an end face of the second connection end protrudes from an end face of the second protruding portion, and a projection of the first protruding portion and a projection of the second protruding portion on the end face of the first housing overlap in the first direction.

In some embodiments, the inner side wall of the first mounting groove includes a first plane and a first curved surface, the outer side wall of the second connecting end includes a second plane and a second curved surface, the shape of the second curved surface matches the shape of the first curved surface, when the second connecting end is inserted into the first mounting groove, the first plane contacts the second plane, and the first curved surface and the second curved surface are nested. In some embodiments, a second accommodating cavity is disposed in the second housing, the second accommodating cavity penetrates through the second connecting end, and the second accommodating cavity and the first accommodating cavity are coaxially disposed.

In some embodiments, the first connection end includes a sleeve portion for increasing a wall thickness of the first connection end, and a length of the sleeve portion is greater than a length of the first mounting groove in an axial direction of the first connection end to ensure mechanical strength at a connection of the first housing and the second housing.

In some embodiments, the first housing includes a first portion and a second portion, the second portion is disposed at an end of the first portion away from the second housing, the second housing includes a third portion and a fourth portion, the fourth portion is disposed at an end of the third portion away from the first housing, the first receiving cavity is disposed in the first portion, the first connecting end is disposed at an end of the first portion, the second receiving cavity is disposed in the third portion, and the second connecting end is disposed at an end of the third portion.

In some embodiments, the first portion and the third portion are coaxially disposed, the first receiving cavity communicates with the second receiving cavity, and a projection of the second portion and the fourth portion on the first housing end surface along the first direction is at least partially non-overlapped.

In some embodiments, the first housing further includes a first positioning portion disposed outside the first portion, the second housing further includes a second positioning portion disposed outside the third portion, and the first positioning portion is aligned with the second positioning portion when the first housing is connected to the second housing.

The embodiment of this application still provides a steering gear, including steering assembly, helping hand subassembly, transfer line and above-mentioned embodiment the steering gear casing, steering assembly the helping hand subassembly with the transfer line install in the steering gear casing, just the transfer line transmission is connected steering assembly and helping hand subassembly.

In some embodiments, the steering assembly is mounted to a first housing of the steering gear housing, the power assisting assembly is mounted to a second housing of the steering gear housing, the transmission rod is disposed in a first accommodating cavity of the first housing and a second accommodating cavity of the second housing, and two ends of the transmission rod are respectively connected to the steering assembly and the power assisting assembly.

The application provides a steering gear casing forms complete steering gear casing through first bulge, second bulge and fastener with first casing and the concatenation of second casing, makes the complicated steering gear casing of structure form dismantled and assembled two segmentation structures simple relatively of structure, is favorable to simplifying the manufacturing process of each part of steering gear casing, reduces the manufacturing degree of difficulty of steering gear casing, improves production efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a diverter housing in one embodiment.

Fig. 2 is an exploded view of the steering gear housing shown in fig. 1.

Fig. 3 is a schematic structural view of a first housing of the steering gear housing shown in fig. 1.

Fig. 4 is a schematic structural view of a second housing of the steering gear housing shown in fig. 1.

Fig. 5 is a schematic structural diagram of a diverter in one embodiment.

Description of the main element symbols:

the specific implementation mode is as follows:

the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

The application provides a steering gear casing and steering gear, steering gear casing include first casing and second casing, second casing detachably connects first casing. The first shell comprises a first connecting end, a first protruding portion is arranged on the outer peripheral side of the first connecting end, the second shell comprises a second connecting end, the first connecting end and the second connecting end are coaxially arranged, a second protruding portion is arranged on the outer peripheral side of the second connecting end, and the steering gear shell further comprises a fastening piece which is connected with the first protruding portion and the second protruding portion.

The steering gear shell is formed by splicing the first shell and the second shell through the first protruding portion, the second protruding portion and the fastening piece, so that the steering gear shell with a complex structure can be disassembled and assembled into a two-section structure with a relatively simple structure, the manufacturing process of each part of the steering gear shell is simplified, the manufacturing difficulty of the steering gear shell is reduced, and the production efficiency is improved.

Some embodiments of the present application are described in detail. In the following embodiments, features of the embodiments may be combined with each other without conflict.

Referring to fig. 1 and 2, in one embodiment, the steering gear housing 100 includes a first housing 10 and a second housing 20, and the second housing 20 is detachably connected to the first housing 10. Specifically, the first housing 10 includes a first connection end 11, a first protruding portion 12 is disposed on an outer peripheral side of the first connection end 11, the second housing 20 includes a second connection end 21, the first connection end 11 is disposed coaxially with the second connection end 21, and a second protruding portion 22 is disposed on an outer peripheral side of the second connection end 21. The first projection 12 and the second projection 22 are connected by a fastener 30. The fasteners 30 include, but are not limited to, screws, pins, bolts, and the like.

In the embodiment of the present application, two first protruding portions 12 are symmetrically disposed on the outer peripheral side of the first connection end 11, two second protruding portions 22 are symmetrically disposed on the outer peripheral side of the second connection end 21, and the positions and the number of the first protruding portions 12 correspond to the second protruding portions 22 one by one. Along the first direction a, the first protrusion 12 overlaps with the projection of the second protrusion 22 on the end face of the first housing 10. The first direction a is an axial direction of the first connection end 11, as indicated by an arrow a in fig. 2. In other embodiments, the number of the first protruding portion 12 and the second protruding portion 22 may also be more, and it is sufficient to satisfy the requirement of connecting the first casing 10 and the second casing 20, and the application is not limited thereto. Further, the first protrusion 12 is provided with a first hole 121, the second protrusion 22 is provided with a second hole 221, when the first housing 10 is connected to the second housing 20, the first hole 121 communicates with the second hole 221, and the fastening member 30 is disposed in the first hole 121 and the second hole 221.

Referring to fig. 2, 3 and 4, the first connecting end 11 is provided with a first mounting groove 111. A first accommodating cavity 101 is formed in the first casing 10, the first accommodating cavity 101 is communicated with the first mounting groove 111, the diameter of the first accommodating cavity 101 is smaller than that of the first mounting groove 111, and a first step surface 112 is formed at the joint of the first mounting groove 111 and the first accommodating cavity 101. A second accommodating cavity 201 is formed in the second housing 20, the second accommodating cavity 201 penetrates through the second connecting end 21, and when the first housing 10 is connected to the second housing 20, the second accommodating cavity 201 and the first accommodating cavity 101 are coaxially arranged. In the embodiment of the present application, on the side of the first housing 10 facing the second housing 20, the end surface of the first protruding portion 12 is flush with the end surface of the first connection end 11. On the side of the second housing 20 facing the first housing 10, the end face of the second connection end 21 protrudes from the end face of the second protrusion 22. The second connecting end 21 is inserted into the first mounting groove 111 and abuts against the first step surface 112.

Further, the inner side wall of the first mounting groove 111 includes a first plane 113 and a first curved surface 114, the outer side wall of the second connecting end 21 includes a second plane 211 and a second curved surface 212, and the shape of the second curved surface 212 matches the shape of the first curved surface 114. When the second connecting end 21 is inserted into the first mounting groove 111, the first plane 113 contacts the second plane 211, and the first curved surface 114 and the second curved surface 212 are nested, so as to assist in limiting the relative rotation between the first casing 10 and the second casing 20.

In the embodiment of the present application, the first connection end 11 further includes a sleeve portion 110, which may be an integral structure with the first protruding portion 12. The sleeve portion 110 serves to increase the wall thickness of the first connection end 11. The length of the sleeve portion 110 is greater than that of the first mounting groove 111 along the axial direction of the first connection end 11, i.e., the first direction a, to ensure the mechanical strength at the connection of the first housing 10 and the second housing 20.

Further, the first housing 10 includes a first portion 13 and a second portion 14, and the second portion 14 is disposed at an end of the first portion 13 away from the second housing 20. The second casing 20 comprises a third portion 23 and a fourth portion 24, and the fourth portion 24 is disposed at an end of the third portion 23 away from the first casing 10. The first receiving cavity 101 is disposed in the first portion 13, and the first connecting end 11 is located at an end of the first portion 13. The second receiving cavity 201 is disposed in the third portion 23, and the second connecting end 21 is located at an end of the third portion 23. When the first housing 10 is connected to the second housing 20, the first portion 13 and the third portion 23 are coaxially disposed, and the first receiving cavity 101 communicates with the second receiving cavity 201. Along the first direction a, the projections of the second portion 14 and the fourth portion 24 on the end surface of the first housing 10 are at least partially non-overlapping. A third accommodating cavity 141 is further formed in the second portion 14, and the third accommodating cavity 141 is communicated with the first accommodating cavity 101. A fourth accommodating cavity 241 is further formed in the fourth portion 24, and the fourth accommodating cavity 241 is communicated with the second accommodating cavity 201.

Further, the first housing 10 further includes a first positioning portion 15, and the first positioning portion 15 is disposed outside the first portion 13. The first portion 13, the second portion 14 and the first positioning portion 15 are integrally formed. The first positioning portion 15 is provided with a first positioning hole 151 and a first reinforcing structure 152, the positioning hole is used for installing and positioning the first housing 10, and the first reinforcing structure 152 is located at a joint of the first positioning portion 15 and the first portion 13, so that the mechanical strength of the first housing 10 is increased while the connection strength between the first positioning portion 15 and the first portion 13 is improved.

The second housing 20 further includes a second positioning portion 25, and the second positioning portion 25 is provided outside the third portion 23. The third portion 23, the fourth portion 24 and the second positioning portion 25 are of an integrally formed structure. The second positioning portion 25 is provided with a second positioning hole 251 and a second reinforcing structure 252, the second positioning hole 251 is used for installing and positioning the second housing 20, and the second reinforcing structure 252 is located at the joint of the second positioning portion 25 and the third portion 23, so that the mechanical strength of the second housing 20 is increased while the joint strength between the second positioning portion 25 and the third portion 23 is improved. The reinforcing structure includes, but is not limited to, a reinforcing rib and the like. When the first housing 10 is connected to the second housing 20, the first positioning portions 15 are aligned with the second positioning portions 25. In the first direction, the first positioning portion 15 overlaps with the projection of the second positioning portion 25 on the end face of the first housing 10.

Referring to fig. 5, an embodiment of the present application further provides a steering gear 200, which includes a steering assembly 40, a power assisting assembly 50, a transmission rod 60 and the steering gear housing 100 of the above embodiment, wherein the steering assembly 40, the power assisting assembly 50 and the transmission rod 60 are mounted in the steering gear housing 100, and the transmission rod 60 is in transmission connection with the steering assembly 40 and the power assisting assembly 50, so that the power assisting assembly 50 can drive the steering assembly 40 through the transmission rod 60.

Specifically, the steering assembly 40 is mounted on the second portion 14 of the first housing 10, the power assisting assembly 50 is mounted on the fourth portion 24 of the second housing 20, the transmission rod 60 is disposed in the first receiving cavity 101 and the second receiving cavity 201, and two ends of the transmission rod 60 are respectively connected to the steering assembly 40 and the power assisting assembly 50. In the embodiment of the present application, the transmission rod 60 includes, but is not limited to, a lead screw, the steering assembly 40 includes a hydraulic assembly, and the boosting assembly 50 includes a driving motor 51 and a transmission assembly 52. The hydraulic assembly is partially disposed in the third receiving cavity 141 and is in transmission connection with a portion of the transmission rod 60 located in the first receiving cavity 101. The driving motor 51 and the transmission assembly 52 are respectively installed at two opposite sides of the fourth portion 24, one end of the transmission rod 60 extending out of the second housing 20 is connected with the transmission assembly 52, and the driving motor 51 drives the transmission rod 60 to move through the transmission assembly 52, so as to drive the hydraulic assembly, thereby realizing the steering process.

Although the present application has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the present application.

Claims

1. A diverter housing comprising:

a first housing;

a second housing detachably connected to the first housing;

the steering gear shell is characterized in that the first shell comprises a first connecting end, a first protruding portion is arranged on the outer peripheral side of the first connecting end, the second shell comprises a second connecting end, the first connecting end and the second connecting end are coaxially arranged, a second protruding portion is arranged on the outer peripheral side of the second connecting end, and the steering gear shell further comprises a fastening piece which is connected with the first protruding portion and the second protruding portion.

2. The steering gear casing according to claim 1, wherein the first connecting end is provided with a first mounting groove, a first accommodating cavity is arranged in the first casing, the first accommodating cavity is communicated with the first mounting groove, a first step surface is formed at a joint of the first mounting groove and the first accommodating cavity, and the second connecting end is inserted into the first mounting groove and abuts against the first step surface.

3. The steering gear housing as claimed in claim 2, wherein an end face of the first protruding portion is flush with an end face of the first connecting end, an end face of the second connecting end protrudes beyond an end face of the second protruding portion, and a projection of the first protruding portion and the second protruding portion on the end face of the first housing overlaps in the first direction.

4. The steering gear housing as claimed in claim 3, wherein the inner side wall of the first mounting groove comprises a first flat surface and a first curved surface, the outer side wall of the second connecting end comprises a second flat surface and a second curved surface, the shape of the second curved surface matches the shape of the first curved surface, the first flat surface contacts the second flat surface when the second connecting end is inserted into the first mounting groove, and the first curved surface and the second curved surface are nested.

5. The steering gear housing as claimed in claim 2, wherein a second housing cavity is provided in the second housing, the second housing cavity extends through the second connecting end, and the second housing cavity is coaxial with the first housing cavity.

6. The steering gear housing as claimed in claim 5, wherein the first housing comprises a first portion and a second portion, the second portion is disposed at an end of the first portion away from the second housing, the second housing comprises a third portion and a fourth portion, the fourth portion is disposed at an end of the third portion away from the first housing, the first receiving cavity is disposed in the first portion, the first connecting end is disposed at an end of the first portion, the second receiving cavity is disposed in the third portion, and the second connecting end is disposed at an end of the third portion.

7. The steering gear housing as claimed in claim 6, wherein the first portion is coaxially disposed with the third portion, the first receiving cavity is communicated with the second receiving cavity, and a projection of the second portion and the fourth portion on the first housing end surface along the first direction is at least partially non-overlapped.

8. The steering gear housing as claimed in claim 6, wherein the first housing further comprises a first positioning portion provided outside the first portion, the second housing further comprises a second positioning portion provided outside the third portion, and the first positioning portion is aligned with the second positioning portion when the first housing and the second housing are coupled.

9. The diverter housing according to claim 2, wherein the first connection end includes a sleeve portion having a length greater than a length of the first mounting slot in an axial direction of the first connection end.

10. A steering gear, comprising a steering assembly, a power assisting assembly, a transmission rod and the steering gear housing according to any one of claims 1 to 9, wherein the steering assembly, the power assisting assembly and the transmission rod are mounted in the steering gear housing, the steering assembly is mounted in a first housing of the steering gear housing, the power assisting assembly is mounted in a second housing of the steering gear housing, the transmission rod is disposed in a first accommodating cavity of the first housing and a second accommodating cavity of the second housing, and two ends of the transmission rod are respectively connected with the steering assembly and the power assisting assembly.