CN215110381U

CN215110381U - Double pinion rack

Info

Publication number: CN215110381U
Application number: CN202120941993.8U
Authority: CN
Inventors: 汪恒山; 刘杰; 张明远
Original assignee: ThyssenKrupp Presta Shanghai Co Ltd
Current assignee: ThyssenKrupp Presta Shanghai Co Ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-12-10
Anticipated expiration: 2031-04-30

Abstract

The utility model discloses a double pinion rack, including first rack and the sub-rack of second, be equipped with first tooth portion on the first sub-rack, be equipped with second tooth portion on the sub-rack of second, first tooth portion with the second tooth position is on the plane of difference, first sub-rack with the end fixed connection of the sub-rack of second. The utility model discloses in with a rack split two racks that become, every sub-rack is processed alone, and tooth portion on every sub-rack can be processed alone, has reduced the degree of difficulty of development and production, the cost is reduced, also convenient transportation simultaneously.

Description

Double pinion rack

Technical Field

The utility model relates to a steering system's technical field especially relates to a double pinion rack and pinion.

Background

In a double pinion steering system, one rack has two rows of teeth. Typically, the rack is produced in one piece, without any assembly of subassemblies. This approach can be costly to develop and produce and is not easily transportable for the platform module kit.

Therefore, there is a need for a double pinion rack that is easy to manufacture, easy to transport, and relatively low in cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide one kind and make easily, easily transport to the lower double pinion rack of cost.

The technical scheme of the utility model a double pinion rack is provided, including first rack and the sub-rack of second, be equipped with first tooth portion on the first sub-rack, be equipped with second tooth portion on the sub-rack of second, first tooth portion with the second tooth position is on the plane of difference, first sub-rack with the end fixed connection of the sub-rack of second.

Further, the ends of the first sub-rack and the second sub-rack are connected in a welding mode.

Furthermore, the ends of the first sub-rack and the second sub-rack are both provided with welding planes.

Furthermore, the end heads of the first sub-rack and the second sub-rack are connected in an inserting mode.

Furthermore, the end of the first sub-rack is provided with a plug connector, the end of the second sub-rack is provided with a plug groove, and the plug connector is inserted into the plug groove and is in interference fit with the plug groove.

Furthermore, the plug connector is a tenon joint, and the inserting groove is a mortise.

Further, the inserting direction of the tenon joint and the mortise is fixed, and the tenon joint is used for limiting the phase angle between the first tooth part and the second tooth part.

Furthermore, the ends of the first sub-rack and the second sub-rack are connected through threads. .

Further, the first and second sub-racks are made of metal.

Further, the outer diameters of the first and second sub-racks are equal.

After adopting above-mentioned technical scheme, have following beneficial effect:

the utility model discloses in with a rack split two racks that become, every sub-rack is processed alone, and tooth portion on every sub-rack can be processed alone, has reduced the degree of difficulty of development and production, the cost is reduced, also convenient transportation simultaneously.

Drawings

The disclosure of the present invention will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present disclosure. In the figure:

fig. 1 is a schematic structural diagram of a double pinion rack according to a first embodiment of the present invention;

fig. 2 is a schematic structural view of a double pinion rack according to a second embodiment of the present invention;

fig. 3 is an exploded perspective view of a double pinion rack according to a second embodiment of the present invention;

fig. 4 is a schematic structural view of a double pinion rack in the third embodiment of the present invention;

fig. 5 is a partial enlarged view of a joint of the double pinion rack according to the third embodiment of the present invention.

Reference symbol comparison table:

first rack bar 1: a first tooth part 11, a plug 12 and an external thread part 13;

second sub-rack 2: a second tooth 21, a socket 22, and an internal thread 23.

Detailed Description

The following describes the present invention with reference to the accompanying drawings.

It is easily understood that, according to the technical solution of the present invention, a plurality of structural modes and implementation modes that can be mutually replaced by those of ordinary skill in the art can be achieved without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are only exemplary illustrations of the technical solutions of the present invention, and should not be construed as limiting or restricting the technical solutions of the present invention in its entirety or as a limitation of the present invention.

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.

The first embodiment is as follows:

as shown in fig. 1, the double-pinion rack comprises a first sub-rack 1 and a second sub-rack 2, a first tooth portion 11 is arranged on the first sub-rack 1, a second tooth portion 21 is arranged on the second sub-rack 2, the first tooth portion 11 and the second tooth portion 21 are located on different planes, and the ends of the first sub-rack 1 and the second sub-rack 2 are fixedly connected.

Specifically, the first sub-rack 1 is cylindrical, a first tooth portion 11 is disposed on an outer surface of the first sub-rack 1, and a length direction of the first tooth portion 11 extends along a length direction of the first sub-rack 1 and is distributed on a section of the first sub-rack 1.

The second sub-rack 2 is also cylindrical, the outer surface of the second sub-rack 2 is provided with a second tooth portion 21, and the length direction of the second tooth portion 21 extends along the length direction of the second sub-rack 2 and is distributed on a section of the second sub-rack 2.

The first tooth 11 and the second tooth 21 are located on different planes with a certain phase angle maintained therebetween.

The first and

second racks

1 and 2 are separately machined, and the first and

second teeth

11 and 21 are machined without considering the size and tolerance therebetween. The difficulty of development and production is reduced, the cost is reduced, and the first sub-rack 1 and the second sub-rack 2 can be packaged and transported independently.

When the steering gear is assembled, the first sub-rack 1 and the second sub-rack 2 are aligned in the axial direction, and the right end of the first sub-rack 1 is fixedly connected with the left end of the second sub-rack 2, so that the first sub-rack 1 and the second sub-rack 2 are connected into a complete rack, and the first tooth part 11 and the second tooth part 21 can be distributed to be matched with the two pinions for a steering system.

Further, the ends of the first sub-rack 1 and the second sub-rack 2 are connected in a welding mode.

Preferably, as shown in fig. 1, welding planes a are respectively disposed at the ends of the first sub-rack 1 and the second sub-rack 2, the two welding planes a are welded after being butted, and the first sub-rack 1 and the second sub-rack 2 are connected into a complete rack after being welded.

Optionally, certain grains can be formed on the welding surface, and the welding area is increased.

In the first embodiment, the two sub-racks are assembled into a complete rack by welding, and the two sub-racks are respectively and independently processed, so that the processing is easy, and the process difficulty is reduced. Before the two sub-racks are assembled, the sub-racks are short in length, easy to package and transport and low in packaging cost.

Example two:

as shown in fig. 2-3, the ends of the first sub-rack 1 and the second sub-rack 2 are connected in an inserting manner. The end of the first sub-rack 1 is provided with a plug 12, the end of the second sub-rack 2 is provided with a plug groove 22, and the plug 12 is inserted into the plug groove 22 and is in interference fit.

In the second embodiment, the plug 12 is a tenon joint, and the inserting groove 22 is a mortise.

Specifically, the cross-sectional area of the tenon joint gradually changes from large to small, and the shape of the mortise is matched with that of the tenon joint.

The tenon joint is provided with a plurality of side faces with different shapes, the side faces can play a role in positioning, so that the inserting direction of the tenon joint and the mortise is fixed, and the set relative position is kept after the first sub-rack 1 and the second sub-rack 2 are inserted and connected, so that the phase angle between the first tooth part 11 and the second tooth part 21 is limited.

According to the second embodiment, the plug 12 and the socket 22 can be easily and quickly mounted and positioned, and the relative position relationship between the first tooth portion 11 and the second tooth portion 21 can be ensured after connection.

Example three:

as shown in fig. 4 to 5, unlike the second embodiment, the ends of the first rack bar 1 and the second rack bar 2 are connected by a screw thread.

Specifically, the first sub-rack 1 comprises an external thread part 13, the second sub-rack 2 comprises an internal thread part 23, and the external thread part 13 is screwed into the internal thread part 23 during connection, so that the fixed connection between the first sub-rack 1 and the second sub-rack 2 is realized.

Preferably, the first and

second racks

1 and 2 are made of metal.

Preferably, the outer diameters of the first and

second racks

1 and 2 are equal, and after the first and

second racks

1 and 2 are connected, a complete rack with a flat surface is formed in appearance.

Through the third embodiment, the external thread part 13 and the internal thread part 23 can realize the quick installation and positioning of the first and

second sub-racks

1 and 2, and the relative angle between the first and

second sub-racks

1 and 2 can be set by setting the number of thread turns. .

What has been described above is merely the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principle of the present invention, several other modifications can be made, and the protection scope of the present invention should be considered.

Claims

1. The double-pinion rack is characterized by comprising a first sub rack (1) and a second sub rack (2), wherein a first tooth part (11) is arranged on the first sub rack (1), a second tooth part (21) is arranged on the second sub rack (2), the first tooth part (11) and the second tooth part (21) are located on different planes, and the end of the first sub rack (1) is fixedly connected with the end of the second sub rack (2).

2. The double pinion rack according to claim 1, characterized in that the ends of the first (1) and second (2) partial racks are welded.

3. The double pinion rack according to claim 2, characterized in that the ends of the first (1) and second (2) racks are provided with a welding plane.

4. The double pinion rack according to claim 1, characterized in that the ends of the first (1) and second (2) partial racks are connected by plugging.

5. Double pinion rack according to claim 4, characterized in that the end of the first partial rack (1) is provided with a plug (12) and the end of the second partial rack (2) is provided with a plug groove (22), the plug (12) being inserted into the plug groove (22) and being interference-fitted.

6. Double pinion rack according to claim 5, characterised in that the plug (12) is a mortise and the socket (22) is a tenon joint.

7. The double pinion rack as claimed in claim 6, characterized in that the plugging direction of the dovetail joint and the mortise is fixed for limiting the phase angle between the first (11) and second (21) teeth.

8. The double pinion rack according to claim 1, characterized in that the ends of the first (1) and second (2) racks are connected by a screw thread.

9. Double pinion rack according to any of claims 1-8, characterized in that the first (1) and the second (2) subrack are made of metal.

10. Double pinion rack according to any of claims 1-8, characterized in that the outer diameters of the first (1) and second (2) partial rack are equal.