CN217177244U - Damping ring and automobile steering device - Google Patents
Damping ring and automobile steering device Download PDFInfo
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- CN217177244U CN217177244U CN202220408898.6U CN202220408898U CN217177244U CN 217177244 U CN217177244 U CN 217177244U CN 202220408898 U CN202220408898 U CN 202220408898U CN 217177244 U CN217177244 U CN 217177244U
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- damping ring
- shell
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- rack
- ring
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Abstract
The utility model discloses a damping ring and an automobile steering gear, wherein the damping ring is in a ring shape, and N lugs are uniformly formed on the outer wall of the damping ring along the circumferential direction; n is an integer greater than 1. The utility model discloses a damping ring increases the lug structure on the cyclic annular structure, increases lug quantity and can satisfy higher requirement of exerting oneself of taking off, damping ring outer lane and casing cooperation, and the lug passes through interference fit with the casing, ensures that the damping ring part has reliable assembly in the casing, can guarantee certain taking off and exert oneself, avoids in the course of the work repeated pressurized and drop. The damping ring is simple in structure, light in weight, low in cost and convenient and reliable to assemble.
Description
Technical Field
The utility model relates to an auto steering technique, in particular to damping ring and auto steering ware.
Background
In an electric power steering gear, a damping ring device is widely used at the end of a steering stroke to reduce the impact of a road surface on the steering gear. The conventional damping ring of the steering gear is usually designed in a metal plus rubber form, wherein one is a sandwich structure (shown in fig. 1 and 2) with rubber in the middle and metal on two sides, and the other is a two-layer structure (shown in fig. 3 and 4) with metal on one side and rubber on the other side. The main drawbacks of the conventional damping ring are: (a) the processing is complex, rubber needs to be coated on metal, the cost is high, and the weight is heavy; (b) for the type of the single-side rubber, the rubber is easy to curl in the press mounting process, oil is needed to be applied for press mounting, and the assembly mode is complex; (c) the bonding strength of metal and rubber is limited, and the metal and the rubber are easy to fall off under the fatigue load or high and low temperature alternating action to cause the failure of parts; (d) due to the limitation of rubber, the traditional damping ring cannot bear the action of the high-temperature environment of the automobile chassis for a long time.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a damping ring, simple structure, light in weight, it is with low costs, the assembly is convenient reliable.
In order to solve the above technical problem, the damping ring provided by the present invention is a circular ring, and N lugs 22 are uniformly formed on the outer wall of the damping ring along the circumferential direction; n is an integer greater than 1.
Preferably, the circumferential width of the lug 22 is 1/20-1/10 of the outer diameter of the damping ring;
the radial height of the lug 22 is 1/30-1/20 of the outer diameter of the damping ring;
the axial thickness of the lug 22 is 0.8-1 of the axial thickness of the damping ring.
Preferably, the damping ring is made of elastic material.
Preferably, the damping ring is formed by injection molding of an elastomer high polymer material.
Preferably, N is 3 or 4.
Preferably, the damping ring at the lug 22 is formed with a deformation hole 23.
Preferably, the dampening ring between the lugs 22 is formed with lightening holes 24.
The utility model also discloses an automobile steering gear adopting the damping ring, which comprises an inner pull rod 1, a ball seat 3, a rack 4, a shell 5 and a limit wall 51;
the left end of the inner pull rod 1 is provided with a ball head;
the ball head of the inner pull rod 1 is movably arranged in the left end of the ball seat 3;
the left end of the rack 4 is connected with the right end of the ball seat 3;
the rack 4 is movably arranged in the shell 5;
a limiting wall 51 for limiting the ball seat 3 is formed on the inner wall of the shell 5;
the damping ring 2 is assembled in the left part of the shell 5, and the rack 4 penetrates through the damping ring 2;
the lug 22 of the damping ring 2 is assembled with the inner wall of the shell 5 in an interference fit manner, and the right side surface of the near-axial-center end of the damping ring 2 abuts against the limiting wall 51 of the shell 5.
Preferably, the automobile steering gear further comprises a gear;
the gear is rotatably arranged in the shell 5, and the gear 6 is meshed with the rack 4.
The utility model discloses a damping ring increases lug 22 structure on the cyclic annular structure, increases lug 22 quantity and can satisfy the higher requirement of exerting oneself of taking off, damping ring outer lane and casing cooperation, and lug 22 passes through interference fit with the casing, ensures that the damping ring part has reliable assembly in the casing, can guarantee that certain taking off exerts oneself, avoids in the course of the work repeated pressurized and drops. The damping ring is simple in structure, light in weight, low in cost and convenient and reliable to assemble.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required for the present invention are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a cross-sectional view of a conventional rubber plus double-sided metal damping ring;
FIG. 2 is a perspective view of a conventional rubber plus double-sided metal damping ring;
FIG. 3 is a cross-sectional view of a conventional rubber plus one-sided metal damping ring;
FIG. 4 is a perspective view of a conventional rubber plus one-sided metal damping ring;
FIG. 5 is a schematic perspective view of a triple-lobe embodiment of the damping ring of the present invention;
figure 6 is an axial view of a three-lobe embodiment of the damping ring of the present invention;
FIG. 7 is a schematic perspective view of a four-lobe embodiment of a damping ring according to the present invention;
FIG. 8 is an axial view of a four-lobe embodiment of the damping ring of the present invention;
FIG. 9 is a schematic perspective view of an embodiment of a lightening hole of the damping ring of the present invention;
FIG. 10 is an axial view of an embodiment of a damping ring lightening hole of the present invention;
FIG. 11 is a diagram illustrating an original state of an embodiment of the steering apparatus of the present invention;
fig. 12 is a diagram illustrating a state in which a ball seat moves to the end of a stroke in an embodiment of a steering apparatus for a vehicle according to the present invention.
Description of reference numerals:
2, a damping ring; 22 lugs; 23 a deformation hole; 24 lightening holes; 1, an inner pull rod; 3, a ball seat; 4, a rack; 5, a shell; 51 limit the walls.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments, but not all embodiments, of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Example one
As shown in fig. 5, 6, 7, 8, 9 and 10, the damping ring is annular, and N lugs 22 are uniformly formed on the outer wall of the damping ring along the circumferential direction; n is an integer greater than 1.
Preferably, the circumferential width of the lug 22 is 1/20-1/10 of the outer diameter of the damping ring;
the radial height of the lug 22 is 1/30-1/20 of the outer diameter of the damping ring;
the axial thickness of the lug 22 is 0.8-1 of the axial thickness of the damping ring.
Preferably, the damping ring is made of elastic material.
Preferably, the damping ring is formed by injection molding of an elastomer high polymer material, the processing technology is simple, and oiling and assembling are not needed.
Preferably, as shown in fig. 5 and 6, N is 3.
Preferably, as shown in fig. 7 and 8, N is 4.
According to the damping ring in the first embodiment, the lug 22 structure is added on the annular structure, the number of the lugs 22 is increased, the requirement for higher releasing force can be met, the outer ring of the damping ring is matched with the shell, the lugs 22 are in interference fit with the shell, the damping ring part is guaranteed to be reliably assembled in the shell, certain releasing force can be guaranteed, and the damping ring is prevented from falling off due to repeated compression in the working process.
The damping ring of the first embodiment has the advantages of simple structure, light weight, low cost and convenience and reliability in assembly.
The damping ring of the embodiment I can be reliably assembled at the tail end of the steering gear shell, has a limiting effect, has a buffering effect on impact from a tie rod ball head, prevents damage to key parts in the steering gear caused by impact of an external road surface, has a tail end limiting effect, and has a damping buffering effect to protect internal parts.
Example two
Based on the damping ring of the first embodiment, the damping ring at the lug 22 is formed with a deformation hole 23 to facilitate the interference fit of the lug 22 in the housing.
EXAMPLE III
According to the damping ring of the first embodiment, as shown in fig. 9 and 10, the damping ring between the lugs 22 is formed with lightening holes 24.
In the damping ring of the third embodiment, the damping ring is designed to be hollow, so that materials are further reduced, the lightweight design and cost reduction of parts are realized, but attention needs to be paid to the fact that the damping ring can bear corresponding impact force.
Example four
An automobile steering device adopting any one damping ring of the first to third embodiments is shown in fig. 11 and 12, and further comprises an inner pull rod 1, a ball seat 3, a rack 4, a shell 5 and a limiting wall 51;
the left end of the inner pull rod 1 is provided with a ball head;
the ball head of the inner pull rod 1 is movably arranged in the left end of the ball seat 3;
the left end of the rack 4 is connected with the right end of the ball seat 3;
the rack 4 is movably arranged in the shell 5;
a limiting wall 51 for limiting the ball seat 3 is formed on the inner wall of the shell 5;
the damping ring 2 is assembled in the left part of the shell 5, and the rack 4 penetrates through the damping ring 2;
the lug 22 of the damping ring 2 is assembled with the inner wall of the shell 5 in an interference fit manner, and the right side surface of the near-axial-center end of the damping ring 2 abuts against the limiting wall 51 of the shell 5.
Preferably, the automobile steering gear further comprises a gear;
the gear is rotatably arranged in the shell 5, and the gear 6 is meshed with the rack 4.
The automobile steering device (also commonly called steering machine) is a group of gear mechanisms which complete the movement from rotation to linear movement (or approximate linear movement), and is also a speed reduction transmission device in a steering system, wherein an inner pull rod, a rack, a ball seat, a damping ring and a shell are combined into a buffer mechanism, the buffer mechanism works in a way that the inner pull rod is connected with the ball seat, the ball seat is connected with the rack, and when the rack moves to a limit stroke position and collides with the shell, the damping ring is contacted and collided with the shell to play a buffer role.
In the automobile steering gear of the fourth embodiment, the inner ring of the damping ring is in clearance fit with the rack, and the rack moves along the axis of the damping ring in the working process of the steering gear; in the working process of the steering gear, the ball seat is in contact with the end face of the damping ring at the tail end of the stroke (as shown in figure 12), the damping ring can play a limiting role at the moment, meanwhile, the damping ring plays a buffering and energy-absorbing role on the impact from the ball head of the pull rod, the impact of the whole steering gear on the tail end is reduced, the damage of key parts in the steering gear caused by the impact of an external road surface is prevented, the key parts of the steering gear can be effectively protected under the conditions of poor road conditions and severe high and low temperature environments, and the parts are prevented from being damaged by the impact force or generating noise and the like.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A damping ring is characterized in that the damping ring is annular, and N lugs (22) are uniformly formed on the outer wall of the damping ring along the circumferential direction; n is an integer greater than 1.
2. The damping ring of claim 1,
the circumferential width of the lug (22) is 1/20-1/10 of the outer diameter of the damping ring;
the radial height of the lug (22) is 1/30-1/20 of the outer diameter of the damping ring;
the axial thickness of the lug (22) is 0.8-1 of the axial thickness of the damping ring.
3. The damping ring of claim 1,
the damping ring is made of elastic materials.
4. The damping ring of claim 1,
the damping ring is formed by injection molding of an elastomer high polymer material.
5. The damping ring of claim 1,
n is 3 or 4.
6. The damping ring of claim 1,
the damping ring at the lug (22) is formed with a deformation orifice (23).
7. The damping ring of claim 1,
the damping ring between the lugs (22) is formed with lightening holes (24).
8. An automobile steering device adopting the damping ring as claimed in any one of claims 1 to 7, characterized in that the automobile steering device comprises an inner tie rod (1), a ball seat (3), a rack (4), a shell (5) and a limiting wall (51);
the left end of the inner pull rod (1) is provided with a ball head;
the ball head of the inner pull rod (1) is movably arranged in the left end of the ball seat (3);
the left end of the rack (4) is connected with the right end of the ball seat (3);
the rack (4) is movably arranged in the shell (5);
a limiting wall (51) for limiting the ball seat (3) is formed on the inner wall of the shell (5);
the damping ring (2) is assembled in the left part of the shell (5), and the rack (4) penetrates through the damping ring (2);
the lug (22) of the damping ring (2) is assembled with the inner wall of the shell (5) in an interference fit mode, and the right side face of the end, close to the axial center, of the damping ring (2) abuts against the limiting wall (51) of the shell (5).
9. The automobile steering gear according to claim 8,
the automobile steering gear also comprises a gear;
the gear is rotatably arranged in the shell (5), and the gear 6 is meshed with the rack (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220408898.6U CN217177244U (en) | 2022-02-28 | 2022-02-28 | Damping ring and automobile steering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220408898.6U CN217177244U (en) | 2022-02-28 | 2022-02-28 | Damping ring and automobile steering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217177244U true CN217177244U (en) | 2022-08-12 |
Family
ID=82740425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220408898.6U Active CN217177244U (en) | 2022-02-28 | 2022-02-28 | Damping ring and automobile steering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217177244U (en) |
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2022
- 2022-02-28 CN CN202220408898.6U patent/CN217177244U/en active Active
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