CN214823584U

CN214823584U - Steering gear assembly, steering gear and automobile

Info

Publication number: CN214823584U
Application number: CN202120155426.XU
Authority: CN
Inventors: 王丽永; 李兴丽
Original assignee: BAIC Motor Co Ltd
Current assignee: BAIC Motor Co Ltd
Priority date: 2021-01-20
Filing date: 2021-01-20
Publication date: 2021-11-23
Anticipated expiration: 2031-01-20

Abstract

The embodiment of the application provides a steering gear assembly, a steering gear and an automobile, and belongs to the technical field of automobiles. Comprises a shell; the shell is provided with a through hole for the rack to pass through, and at least one section of side wall of the through hole is provided with a stepped concave platform extending to the outer wall of the shell; a support bushing matched with the stepped concave table is arranged in the stepped concave table; an elastic compensation part is arranged between the outer wall of the supporting bushing and the stepped concave table to compensate a gap between the supporting bushing and the stepped concave table. Use a steering gear and car that this application provided, can utilize and set up elasticity compensation part between stairstepping concave station and support bush to compensate the clearance between the two, with the abnormal sound that reduces the striking between the two and bring.

Description

Steering gear assembly, steering gear and automobile

Technical Field

The embodiment of the application relates to the technical field of automobiles, in particular to a steering gear assembly, a steering gear comprising the steering gear assembly and an automobile comprising the steering gear.

Background

The steering gear is a transmission mechanism connected between the steering wheel and the tire, and the tire and the steering wheel can synchronously rotate through the steering gear.

In the prior art, the steering gear includes a housing and a rack slidably disposed in the housing, a bushing is disposed inside the housing for supporting the rack in the housing, and a concave platform for limiting the movement of the bushing is disposed on an inner wall of the housing.

After the steering gear is used for a long time, the bushing is likely to be abraded, a gap is formed between the bushing and the concave table, and finally, when the rack moves, the bushing collides with the concave table, so that the abnormal knocking noise is generated; and after a gap is formed between the countersunk head and the concave table, the linear motion of the rack is also influenced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a steering gear assembly, a steering gear and an automobile, and aims to solve the problems that abnormal sound caused by a gap between a lining and a concave table is generated and the movement of a rack is influenced.

A first aspect of embodiments of the present application provides a steering gear assembly, including: a housing;

the shell is provided with a through hole for the rack to pass through, and at least one section of side wall of the through hole is provided with a stepped concave platform extending to the outer wall of the shell;

a support bushing matched with the stepped concave table is arranged in the stepped concave table;

an elastic compensation part is arranged between the outer wall of the supporting bushing and the stepped concave table to compensate a gap between the supporting bushing and the stepped concave table.

Optionally, the elastic compensation part comprises a rubber pad, and the rubber pad is arranged between the stepped concave platform and the support bushing to compensate for a gap between the support bushing and the stepped concave platform.

Optionally, the rubber pad comprises a radial rubber pad and/or an axial rubber pad;

the radial rubber pad is arranged between the stepped concave table and a first plane of the supporting bush, the axial rubber pad is arranged between the stepped concave table and a second plane of the supporting bush, and an included angle is formed between the first plane and the second plane.

Optionally, an included angle between the first plane and the second plane is 90 degrees.

Optionally, the shell further comprises an adjusting nut, and the stepped concave stages are arranged at two ends of the shell;

the adjusting nut is in threaded connection with the end part of the stepped concave table and is abutted against the end part of the supporting bush;

the adjusting nut is provided with an opening through which the rack passes, and the opening is communicated with the through hole.

Optionally, there is a gap between an inner wall of the aperture and the rack.

Optionally, an oil reservoir is provided on the inner wall of the support sleeve.

Optionally, the oil reservoir is grid-shaped.

A second aspect of embodiments of the present application provides a steering gear including a steering gear assembly as described in the first aspect of embodiments of the present application.

A third aspect of the embodiments of the present application provides an automobile including the steering gear of the second aspect of the embodiments of the present application.

Has the advantages that:

the application provides a steering gear component, which is characterized in that a support bushing matched with the stepped concave table is arranged in the stepped concave table, so that axial impact caused by a rack can be buffered, and the service life of the support bushing is prolonged; an elastic compensation part is arranged between the stepped concave platform and the support bushing, so that the gap between the stepped concave platform and the support bushing can be compensated, and the impact abnormal sound caused by the gap between the stepped concave platform and the support bushing is avoided; in addition, because the stepped concave station and the support bush in the application are stepped, after any elastic compensation part between the stepped concave station and the support bush is abraded, the elastic compensation part between the rest stepped concave station and the support bush can be used for compensating, so that the support bush can be stably fixed to the stepped concave station, and the abnormal sound caused by the fact that the support bush impacts the stepped concave station is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic cross-sectional view of a steering gear according to an embodiment of the present application;

FIG. 2 is a schematic structural view of a support sleeve according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a housing according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of an adjusting nut according to an embodiment of the present disclosure;

fig. 5 is a schematic cross-sectional view of a support sleeve according to an embodiment of the present application.

Description of reference numerals: 1. a housing; 11. a through hole; 2. a stepped concave; 3. a support bushing; 31. a first plane; 32. a second plane; 41. radial rubber pads; 42. an axial rubber pad; 5. adjusting the nut; 51. opening a hole; 6. a rack; 7. and an oil storage tank.

Detailed Description

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 some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Example one

A steering gear assembly is disclosed, and a cross-sectional structure schematic diagram of the steering gear assembly is shown in reference to FIG. 1. The diverter assembly includes: the rack gear comprises a shell 1, wherein the shell 1 is provided with a through hole 11 for a rack 6 to pass through, and at least one section of side wall of the through hole 11 is provided with a stepped concave platform 2 extending towards the outer wall of the shell 1; a support bush 3 matched with the stepped concave table 2 is arranged in the stepped concave table 2; an elastic compensation part is arranged between the outer wall of the support bush 3 and the stepped concave station 2 to compensate the clearance between the support bush 3 and the stepped concave station 2.

In this embodiment, with the support bush 3 of stairstepping concave station 2 adaptation, be the stairstepping likewise, support bush 3 can be close to the central axis of through-hole 11 according to the direction from a left side to the right side along the stairstepping of casing 1's length direction gradually, also can be close to casing 1 outer wall according to the direction from a right side to a left side gradually, stairstepping concave station 2 is also so, and this application does not do the restriction here.

Wherein the support bush 3 may be provided at the position of one, two or several sections of the through hole 11 to support the rack 6. The support bush 3 is hollow inside for the rack 6 to pass through; one end of the support bush 3, which is far away from the stepped concave 2, protrudes towards the central axis of the through hole 11 to support the rack 6 so as to avoid the contact of the rack 6 with the inner wall of the shell 1.

The support bush 3 matched with the stepped concave table 2 is arranged in the stepped concave table 2, namely, the support bush 3 is set to be stepped, so that axial impact (impact in the horizontal direction shown in figure 1) caused by the rack 6 can be buffered, and the service life of the support bush 3 is prolonged; and, set up the elastic compensation portion between stepped concave station 2 and support bush 3, can be seen from fig. 1, can compensate the interval between stepped concave station 2 and support bush 3, in order to avoid the impact abnormal sound that produces the interval and brings between stepped concave station 2 and support bush 3.

In addition, because the stepped concave station 2 and the support bush 3 in the application are both stepped, after any elastic compensation part between the stepped concave station 2 and the support bush 3 is abraded, the elastic compensation part between the rest stepped concave station 2 and the support bush 3 can be used for compensating, so that the support bush 3 can be stably fixed on the stepped concave station 2, and the abnormal sound caused by the fact that the support bush 3 impacts the stepped concave station 2 is avoided.

Based on the above-mentioned steering gear assembly, the following specific examples are provided, and the examples can be arbitrarily combined to form a new steering gear assembly without mutual conflict, and it should be understood that the new steering gear assembly formed by combining any examples is within the scope of the present application.

In a possible embodiment, the elastic compensation part comprises a rubber pad arranged between the stepped recess 2 and the support bush 3 to compensate for the clearance between the support bush 3 and the stepped recess 2.

In the present embodiment, referring to fig. 2, the support bush 3 has a first plane 31 and a second plane 32, and the included angle between the first plane 31 and the second plane 32 may be between 0 ° and 90 °, or equal to 90 °, or between 90 ° and 180 °, as long as it is ensured that the support bush 3 can be fixed to the stepped recess 2. Since the support bush 3 has the first flat surface 31 and the second flat surface 32, the rubber pad can be installed at two different positions in the following embodiments.

The first embodiment: the rubber pad is a radial rubber pad 41, and as shown in fig. 1 and 2, the radial rubber pad 41 is disposed between the stepped concave 2 and the first plane 31 of the support bush 3, and the radial rubber pad 41 may be a silent vulcanized rubber.

In the present embodiment, as shown in fig. 2 and 3, the radial rubber pad 41 may be circumferentially provided on the outer wall (first plane 31) of the support bush 3, or may be circumferentially provided on the inner wall of the stepped recess 2. And then make to be flexible contact between the radial first plane 31 of support bush 3 and the stairstepping concave station 2, fill the compensation to the radial clearance between the radial first plane 31 of support bush 3 and stairstepping concave station 2, avoid the abnormal sound that brings because radial clearance.

When the radial rubber pad 41 is disposed on the outer wall of the support bush 3, as shown in fig. 2, a positioning groove (not shown in the figure) is respectively disposed on each layer of outer wall of the support bush 3, and the radial rubber pad 41 is clamped into the positioning groove, so that the radial rubber pad 41 is fixed.

The second embodiment: the rubber pad is an axial rubber pad 42, as shown in fig. 1 and 3, the axial rubber pad 42 is disposed between the stepped concave 2 and the second plane 32 of the support bush 3, and the axial rubber pad 42 may also be a silent vulcanized rubber.

In the present embodiment, as shown in fig. 2 and 3, the axial rubber pads 42 may be circumferentially provided on a plurality of step surfaces (second flat surfaces 32) of the support bush 3, or may be circumferentially provided on a plurality of step surfaces of the stepped recess 2. And then make to be flexible contact between the second plane 32 on the support bush 3 axial and the stepped concave station 2, fill the compensation to the axial clearance between the second plane 32 on the support bush 3 axial and the stepped concave station 2, avoid the abnormal sound that brings because axial clearance.

In the two embodiments, the radial rubber pads 41 are provided in plurality, and the axial rubber pads 42 are also provided in plurality, so that after one radial rubber pad 41 in the plurality of radial rubber pads 41 is worn, the radial gap between the first plane 31 of the support bush 3 and the stepped concave platform 2 can be supplemented by the rest radial rubber pads 41; after one of the axial rubber pads 42 is worn, the axial gap between the second plane 32 of the support bush 3 and the stepped concave 2 can be supplemented by the other axial rubber pads 42. And then make support bush 3 can more firmly fix to the stairstepping concave station 2 in, promoted the firm nature of cooperation between the two, further avoided the abnormal sound.

For example, fig. 1 shows the support bush 3 with three steps, if the radial rubber pad 41 at the middle position of the support bush 3 is worn more seriously, even if there is a gap between the radial rubber pad 41 at the middle position and the inner wall of the housing 1, the radial rubber pads 41 at both sides can be stably fixed in the stepped concave platform 2, and when the rack 6 moves left and right, the support bush 3 cannot move up and down to hit the housing 1 due to the filling of the radial rubber pads 41 at both sides.

For another example, if the axial rubber pad 42 located at the middle position in the support bush 3 is more worn, even if there is a gap between the axial rubber pad 42 located at the middle position and the inner wall of the housing 1, the axial rubber pads 42 located at both sides can be stably fixed in the stepped concave platform 2, and when the rack 6 moves left and right, the support bush 3 cannot move left and right to strike the housing 1 due to the filling of the axial rubber pads 42 located at both sides.

In a possible embodiment, referring to fig. 1 and 4, the adjusting device further comprises an adjusting nut 5, and stepped concave platforms 2 are arranged at two ends of the shell 1; the adjusting nut 5 is connected to the end part of the stepped concave platform 2 in a threaded mode and is abutted against the end part of the supporting bush 3; the adjusting nut 5 is provided with an opening 51 for the rack 6 to pass through, and the opening 51 is communicated with the through hole 11.

In this embodiment, as shown in fig. 1, the adjusting nut 5 is located outside the housing 1 and is screwed to the end of the stepped concave table 2, so that after the axial rubber pad 42 is worn in long-term use, when a gap is generated between the second plane 32 of the supporting bush 3 and the stepped concave table 2, the adjusting nut 5 can be screwed in the direction toward the inside of the housing 1, so as to push the second plane 32 of the supporting bush 3 to abut against the stepped surface of the stepped concave table 2, and fix the second plane 32 of the supporting bush 3 at the position abutting against the stepped concave table 2, thereby avoiding the generation of a gap between the end of the supporting bush 3 and the stepped concave table 2, and further avoiding the occurrence of abnormal sound.

Referring to fig. 1, an opening 51 through which the rack 6 passes is formed in the adjusting nut 5, the opening 51 is communicated with the through hole 11, and the rack 6 can pass through the opening, but in order to prevent the rack 6 from contacting with an inner wall of the opening 51 of the adjusting nut 5, the cross-sectional area of the opening 51 can be set to be larger than that of the through hole 11, so that a gap is formed between the inner wall of the opening 51 and the rack 6, friction caused by contact between the adjusting nut 5 and the rack 6 is avoided, and labor can be saved when the adjusting nut 5 is manually rotated.

In a possible embodiment, with reference to fig. 5, the supporting bush 3 is provided with an oil reservoir 7 on its inner wall.

In this embodiment, the oil storage groove 7 may be provided on the inner wall of the support bush 3, so that the lubricating oil can be stored, and the rack 6 is lubricated by the lubricating oil in the oil storage groove 7, thereby reducing the frictional force between the rack 6 and the support bush 3, and further reducing the wear between the support bush 3 and the rack 6, and improving the service life of the support bush 3 and the rack 6.

The oil reservoir 7 is in a mesh shape. Due to the fact that the oil storage groove 7 is arranged in a grid shape, on one hand, the storage space for storing lubricating oil can be enlarged, so that more lubricating oil can be stored to lubricate the rack 6; on the other hand, the contact area between the rack 6 and the support bush 3 when the rack 6 moves can be reduced, the friction force between the rack 6 and the support bush 3 is greatly reduced, the thrust-back capability of the rack 6 is improved, the return performance of the steering gear is further improved, and based on the reduction of the friction force, a user can rotate the steering wheel more smoothly, and the steering hand feeling is improved.

Example two

Based on the same inventive concept, the second embodiment of the present application provides a steering gear, including the steering gear assembly provided in the first embodiment of the present application.

EXAMPLE III

Based on the same inventive concept, the second embodiment of the present application provides an automobile, which includes the steering gear provided in the second embodiment of the present application.

It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.

It should also be noted that, in this document, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Moreover, relational terms such as "first" and "second" 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 or should not be construed as indicating or implying relative importance. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal 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 terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or terminal equipment comprising the element.

The technical solutions provided by the present application are described in detail above, and the principles and embodiments of the present application are described herein by using specific examples, which are only used to help understanding the present application, and the content of the present description should not be construed as limiting the present application. While various modifications of the illustrative embodiments and applications will be apparent to those skilled in the art based upon this disclosure, it is not necessary or necessary to exhaustively enumerate all embodiments, and all obvious variations and modifications can be resorted to, falling within the scope of the disclosure.

Claims

1. A diverter assembly, comprising: a housing (1);

the shell (1) is provided with a through hole (11) for the rack (6) to pass through, and at least one section of side wall of the through hole (11) is provided with a stepped concave platform (2) extending towards the outer wall of the shell (1);

a support bushing (3) matched with the stepped concave table (2) is arranged in the stepped concave table (2);

an elastic compensation part is arranged between the outer wall of the support bushing (3) and the stepped concave table (2) to compensate the gap between the support bushing (3) and the stepped concave table (2).

2. Steering gear assembly according to claim 1, characterized in that the elastic compensation comprises a rubber pad which is arranged between the stepped pocket (2) and the support bush (3) to compensate for a clearance of the support bush (3) and the stepped pocket (2).

3. Diverter assembly according to claim 2, characterized in that the rubber pads comprise radial rubber pads (41) and/or axial rubber pads (42);

wherein, radial rubber pad (41) set up in stairstepping concave station (2) with between first plane (31) of support bush (3), axial rubber pad (42) set up in stairstepping concave station (2) with between second plane (32) of support bush (3), first plane (31) with the contained angle has between second plane (32).

4. Diverter assembly according to claim 3, characterized in that the angle between the first plane (31) and the second plane (32) is 90 degrees.

5. The diverter assembly according to claim 1, further comprising an adjusting nut (5), the stepped recess (2) being provided at both ends of the housing (1);

the adjusting nut (5) is in threaded connection with the end part of the stepped concave table (2) and is abutted against the end part of the supporting bush (3);

the adjusting nut (5) is provided with an opening (51) for the rack (6) to pass through, and the opening (51) is communicated with the through hole (11).

6. Steering gear assembly according to claim 5, characterized in that there is a clearance between the inner wall of the aperture (51) and the rack (6).

7. Steering gear assembly according to claim 1, characterized in that the inner wall of the support bush (3) is provided with an oil reservoir (7).

8. Steering gear assembly according to claim 7, characterized in that the oil reservoir (7) is grid-shaped.

9. A diverter according to any one of claims 1 to 8, comprising a diverter assembly.

10. An automobile, characterized by comprising the steering gear according to claim 9.