CN209972365U - Steering gear sound insulation structure - Google Patents
Steering gear sound insulation structure Download PDFInfo
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- CN209972365U CN209972365U CN201920482741.6U CN201920482741U CN209972365U CN 209972365 U CN209972365 U CN 209972365U CN 201920482741 U CN201920482741 U CN 201920482741U CN 209972365 U CN209972365 U CN 209972365U
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- steering gear
- vertical pipe
- boss
- wall
- input shaft
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Abstract
The utility model provides a sound insulation structure of a steering gear, which is used on a via hole arranged on an input shaft of the steering gear by an automobile body and comprises a protective cover, an outer ring and an inner ring; the protective cover is fixed on the automobile body and covers and buckles the upper part of the through hole, and a cavity is formed on the protective cover; the outer ring comprises a first vertical pipe and a first boss; the first boss is radially clamped and fixed on the inner wall of the cavity along the cavity, so that the first vertical pipe is accommodated in the cavity or penetrates out of the cavity; the inner ring comprises a second vertical pipe and a second boss; the second vertical pipe axially penetrates into the first vertical pipe, so that the outer wall of the second vertical pipe and the inner wall of the first vertical pipe form clearance fit, the inner wall of the second vertical pipe is sleeved on the outer wall of the input shaft of the steering gear and is fixed, and the bottom of the second boss enters the cavity and abuts against the top of the first boss. Implement the utility model discloses, possess characteristics such as simple structure, light in weight, with low costs, assembly are convenient, can not only seal the via hole that the input shaft of steering gear was seted up on the automobile body, can also prevent the noise and spread into passenger cabin by engine compartment.
Description
Technical Field
The utility model relates to the field of automotive technology, especially, relate to a steering gear sound-proof structure.
Background
Generally, the steering of an automobile is achieved by connecting a steering wheel with an input shaft of a steering gear, so that power on the steering wheel is transmitted to the steering gear through the input shaft. The steering gear is arranged below the front part of the cab, and the steering wheel penetrates through the cab through the rod body and then is connected with the steering gear, so that a through hole needs to be formed in an automobile body for an input shaft of the steering gear.
However, the through hole formed in the vehicle body for the input shaft of the steering gear is large, and the through hole is generally sealed only by the dust cover, but noise cannot be prevented from being transmitted from the engine compartment to the passenger compartment. Even if some steering gear sound insulation structures are considered to be adopted to realize the isolation of noise transmitted into a passenger compartment from an engine compartment, the existing steering gear sound insulation structures are complex, inconvenient to assemble, large in peripheral space requirement, heavy in weight and high in cost, so that a small-sized vehicle with low cost is difficult to bear.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a technical problem that will solve provides a steering gear sound-proof structure, possesses characteristics such as simple structure, light in weight, with low costs, assembly are convenient, can not only seal the via hole that the input shaft of steering gear was seted up on the automobile body, can also prevent the noise and spread into passenger cabin by engine compartment.
In order to solve the technical problem, an embodiment of the utility model provides a sound insulation structure of a steering gear, which is used for a via hole formed on an input shaft of the steering gear by an automobile body and comprises a protective cover, an outer ring and an inner ring; wherein the content of the first and second substances,
the protective cover is fixed on the automobile body and covers and buckles the upper part of a through hole formed in the automobile body and used as an input shaft of the steering gear, and a cavity which penetrates through the top end face and the bottom end face and is communicated with the through hole is formed in the protective cover;
the outer ring is fixed in the cavity and comprises a first hollow tubular vertical pipe and a first boss formed by outwards extending the periphery of the top edge of the first vertical pipe; the first boss is fixed on the inner wall of the cavity in a clamping manner along the radial direction of the cavity, so that the first vertical pipe is accommodated in the cavity or penetrates out of the cavity;
the inner ring penetrates into the outer ring and is in clearance fit connection with the outer ring, and the inner ring comprises a hollow tubular second vertical pipe and a second boss formed by outwards extending the periphery of the top edge of the second vertical pipe; the second vertical pipe axially penetrates into the first vertical pipe, so that the outer wall of the second vertical pipe is in clearance fit with the inner wall of the first vertical pipe, the inner wall of the second vertical pipe is sleeved on the outer wall of the input shaft of the steering gear and is fixed with the input shaft of the steering gear, the bottom of the second boss enters the cavity, and the bottom end face of the second boss abuts against the top end face of the first boss.
The top end face of the first boss is provided with a plurality of blind holes in the contact area with the bottom end face of the second boss; wherein, lubricating grease is filled in each blind hole.
The inner wall of the second boss close to the bottom is provided with a protruded annular ring which surrounds along the radial direction; wherein the content of the first and second substances,
the annular ring is sleeved on a conical surface preset on the outer side of the input shaft of the steering gear and forms clearance fit with the conical surface preset on the outer side of the input shaft of the steering gear.
Wherein, at least one fastener is formed on the inner wall of the second vertical pipe close to the bottom; wherein the content of the first and second substances,
each buckle is fixed with a preset groove on the outer wall of the input shaft of the steering gear.
And each buckle is provided with an assembling inclined surface which is used for being matched with the end surface of a preset groove on the outer wall of the input shaft of the steering gear at one end facing the through hole.
The bottom end face of the protective cover is provided with ribs which are distributed along the periphery of the edge and are fastened on the automobile body.
Wherein, the convex edge is a closed annular structure.
The bottom end face of the protective cover is also provided with two limiting lugs; wherein the content of the first and second substances,
the two limiting lugs enter the through holes, and the outer edges of the limiting lugs are in clearance fit with the inner walls of the through holes so as to prevent the protective cover from rotating excessively in the circumferential direction.
Wherein, the outer ring and the inner ring are both made of plastics.
Wherein, the safety cover is made by rubber.
Implement the embodiment of the utility model provides a, following beneficial effect has:
for traditional steering gear sound-insulating structure, the embodiment of the utility model provides a steering gear sound-insulating structure comprises safety cover, outer lane and inner circle, only need to detain the protective shroud in the via hole top that automobile body offered for the input shaft of steering gear, the inner and outer lane cup joints and installs on the safety cover, and inner circle inner wall cover is located on the outer wall of the input shaft of steering gear and fixed, can realize the via hole of offering for the input shaft of steering gear on the sealed automobile body, can also prevent the noise and spread into passenger cabin by engine compartment, possess simple structure, light in weight, with low costs, characteristics such as the assembly is convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be 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 obtained from these drawings still belong to the scope of the present invention without inventive laboriousness.
Fig. 1 is an assembly view of a sound insulating structure of a steering gear provided in an embodiment of the present invention;
fig. 2 is an exploded view of a sound insulating structure of a steering gear provided in an embodiment of the present invention;
FIG. 3 is a cross-sectional view of FIG. 1;
in the figure: 1-protective cover, 11-cavity, 12-rib, 13-limit lug, 2-outer ring, 21-first vertical pipe, 22-first boss, 221-blind hole, 3-inner ring, 31-second vertical pipe, 311-buckle, 32-second boss and 321-annular ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
The terms of direction and position in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer to the direction and position of the attached drawings. Accordingly, the use of directional and positional terms is intended to illustrate and understand the present invention and is not intended to limit the scope of the invention.
As shown in fig. 1 to 3, in an embodiment of the present invention, a sound insulation structure for a steering gear is provided, which is used for a via hole (not shown) formed in an input shaft (not shown) of the steering gear of an automobile body (not shown), and includes a protective cover 1, an outer ring 2, and an inner ring 3; wherein the content of the first and second substances,
the protective cover 1 is fixed on the automobile body and covers and buckles the automobile body above a through hole formed in an input shaft of a steering gear, and a cavity 11 which penetrates through the top end face and the bottom end face and is communicated with the through hole is formed in the protective cover;
the outer ring 2 is fixed in the cavity 11, and the outer ring 2 comprises a first vertical pipe 21 in a hollow tubular shape and a first boss 22 formed by extending the periphery of the top edge of the first vertical pipe 21 outwards; wherein, the first boss 22 is fixed on the inner wall of the cavity 11 along the radial direction of the cavity 11 in a clamping manner, so that the first vertical pipe 21 is accommodated in the cavity 11 or penetrates out of the cavity 11;
the inner ring 3 penetrates into the outer ring 2 and is in clearance fit connection with the outer ring 2, so that friction force obtained by friction contact between the inner ring 3 and the outer ring 2 cannot be transmitted to the protective cover 1 from the outer ring 2 to drive the protective cover 1 to displace when the inner ring 3 rotates, and the inner ring 3 comprises a hollow tubular second vertical pipe 31 and a second boss 32 formed by outwards extending the periphery of the top edge of the second vertical pipe 31; the second vertical pipe 31 axially penetrates into the first vertical pipe 21, so that a clearance fit is formed between the outer wall of the second vertical pipe and the inner wall of the first vertical pipe 21, the inner wall of the second vertical pipe is sleeved on the outer wall of the input shaft of the steering gear and fixed with the input shaft of the steering gear, the bottom of the second boss 32 enters the cavity 11, the bottom end face of the second boss 32 abuts against the top end face of the first boss 22, and the inner ring 3 can be assembled into the outer ring 2 and cannot fall out of the outer ring 2.
It can be understood that, the radial card is held fixedly between safety cover 1 and the outer lane 2 to and clearance fit between outer lane 2 and the inner circle 3, make whole steering gear sound-proof structure's simple structure, it is convenient to assemble, can become the via hole that sealed lid structure comes sealed automobile body to set up for the input shaft of steering gear, still make to reserve and pass through the clearance undersize for the noise, thereby can play the noise prevention effect that the passenger cabin was introduced into by the engine compartment.
It should be noted that the protective cover 1 and the outer ring 2 may be in an interference fit (for example, the first boss 22 is pressed into an annular groove formed on the inner wall of the cavity 11 along the radial direction of the cavity 11 and is clamped and fixed), so that the sealing performance and the sound insulation effect of the whole sound insulation structure of the steering gear can be further enhanced.
The embodiment of the utility model provides an in, safety cover 1, outer lane 2 and inner circle 3 all can be formed by the sound insulation material preparation, can form by the sound absorbing material preparation that has certain hardness and pliability even, can play fine syllable-dividing effect like this. In one example, the protective cover 1, the outer ring 2 and the inner ring 3 are all made of sound insulation materials, wherein the protective cover 1 is made of rubber, and the outer ring 2 and the inner ring 3 are made of plastics, so that the whole steering gear sound insulation structure has the advantages of better sealing performance and sound insulation effect, light weight, low cost and the like.
In the embodiment of the present invention, the top end surface of the first boss 22 is formed with a plurality of blind holes 221 in the region where it contacts the bottom end surface of the second boss 32; lubricating grease is filled in each blind hole 221, friction damage and friction noise between the first boss 22 and the second boss 32 can be reduced, the service life is prolonged, friction force obtained by friction contact between the outer ring 2 and the inner ring 3 can be relieved, and acting force transmitted to the protective cover 1 by the outer ring 2 is further overcome.
In the embodiment of the present invention, the inner wall of the second boss 32 near the bottom is provided with a radially surrounding and protruding annular ring 321; the annular ring 321 is sleeved on a preset conical surface on the outer side of the input shaft of the steering gear and forms clearance fit with the preset conical surface on the outer side of the input shaft of the steering gear, so that noise can be further prevented from passing through a clearance between the inner ring 3 and the input shaft of the steering gear, and the purpose of reducing noise is achieved. It should be noted that the size of the predetermined tapered surface outside the input shaft of the steering gear is gradually reduced along the bottom of the second boss 32 toward the top thereof.
In the embodiment of the present invention, the second vertical tube 31 has at least one buckle 311 formed on the inner wall near the bottom; each buckle 311 is fixed with a preset groove on the outer wall of the input shaft of the steering gear, an assembly inclined plane matched with the end face of the preset groove on the outer wall of the input shaft of the steering gear is formed at one end of each buckle 311 facing a through hole, grooves are formed at two sides of the inner ring 3 buckle 311, and therefore the inner ring 3 can be rapidly assembled with the input shaft of the steering gear, the deformation of the inner ring 3 in the process of being matched with the input shaft of the steering gear is increased, the assembly operating force is reduced, and the operation convenience is improved.
The embodiment of the utility model provides an in, the bottom terminal surface of safety cover 1 is formed with along the edge all around distribute and be used for being fixed in bead 12 on the automobile body, as long as can realize rapid Assembly on the automobile body through the crimping of bead 12, can overcome the many problems of traditional steering gear sound-proof structure screw fixation mode assembly process like this. In one example, the rib 12 has a closed loop configuration, which enhances the fastening of the shield case 1 to the vehicle body.
It should be noted that, in order to reduce noise, promote passenger cabin comfort and experience, all can lay the carpet on automobile body floor, this moment the safety cover 1 through the bead 12 embedding crimping on the carpet can, ensure that the compaction of safety cover 1 is on the carpet for whole steering gear sound-proof structure's leakproofness and syllable-dividing effect are better.
Furthermore, two limiting lugs 13 are arranged on the bottom end face of the protective cover 1; wherein, two spacing lugs 13 get into in the via hole, and its outer fringe becomes less clearance fit with the inner wall of via hole simultaneously, can play the effect of circumference location like this for avoid the excessive rotation of safety cover 1 circumference.
Implement the embodiment of the utility model provides a, following beneficial effect has:
for traditional steering gear sound-insulating structure, the embodiment of the utility model provides a steering gear sound-insulating structure comprises safety cover, outer lane and inner circle, only need to detain the protective shroud in the via hole top that automobile body offered for the input shaft of steering gear, the inner and outer lane cup joints and installs on the safety cover, and inner circle inner wall cover is located on the outer wall of the input shaft of steering gear and fixed, can realize the via hole of offering for the input shaft of steering gear on the sealed automobile body, can also prevent the noise and spread into passenger cabin by engine compartment, possess simple structure, light in weight, with low costs, characteristics such as the assembly is convenient.
The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the invention, which is defined by the claims and their equivalents.
Claims (10)
1. A sound insulation structure of a steering gear is used for a via hole formed in an input shaft of the steering gear on an automobile body, and is characterized by comprising a protective cover (1), an outer ring (2) and an inner ring (3); wherein the content of the first and second substances,
the protective cover (1) is fixed on the automobile body and covers and buckles the upper part of a via hole formed in the automobile body as an input shaft of a steering gear, and a cavity (11) which penetrates through the top end face and the bottom end face and is communicated with the via hole is formed in the protective cover;
the outer ring (2) is fixed in the cavity (11) and comprises a first hollow tubular vertical pipe (21) and a first boss (22) formed by outwards extending the periphery of the top edge of the first vertical pipe (21); the first boss (22) is fixed on the inner wall of the cavity (11) in a radial clamping manner along the cavity (11), so that the first vertical pipe (21) is accommodated in the cavity (11) or penetrates out of the cavity (11);
the inner ring (3) penetrates into the outer ring (2) and is in clearance fit connection with the outer ring (2), and the inner ring comprises a hollow tubular second vertical pipe (31) and a second boss (32) formed by outwards extending the periphery of the top edge of the second vertical pipe (31); the second vertical pipe (31) axially penetrates into the first vertical pipe (21), so that the outer wall of the second vertical pipe is in clearance fit with the inner wall of the first vertical pipe (21), the inner wall of the second vertical pipe is sleeved on the outer wall of the input shaft of the steering gear and is fixed with the input shaft of the steering gear, the bottom of the second boss (32) enters the cavity (11), and the bottom end face of the second boss (32) abuts against the top end face of the first boss (22).
2. A sound insulating structure for a steering gear according to claim 1, wherein the top end surface of said first boss (22) is formed with a plurality of blind holes (221) in a region where it contacts the bottom end surface of said second boss (32); wherein, lubricating grease is filled in each blind hole (221).
3. A sound-insulating structure for steering gears according to claim 2, wherein the second boss (32) is provided with a radially surrounding and projecting annular ring (321) on the inner wall near the bottom; wherein the content of the first and second substances,
the annular ring (321) is sleeved on a preset conical surface on the outer side of the input shaft of the steering gear and forms clearance fit with the preset conical surface on the outer side of the input shaft of the steering gear.
4. A sound insulating structure for steering gears according to claim 3 characterized in that said second riser duct (31) is formed with at least one catch (311) on the inner wall near the bottom; wherein the content of the first and second substances,
each buckle (311) is fixed with a preset groove on the outer wall of the input shaft of the steering gear.
5. A sound-insulating structure for steering gears according to claim 4, characterized in that each of the catches (311) is formed with a fitting slope at an end facing the through hole for fitting with an end face of a predetermined groove on an outer wall of an input shaft of the steering gear.
6. A sound-insulating structure for a steering gear according to claim 5, wherein the bottom end surface of the protective cover (1) is formed with ribs (12) distributed around the periphery and adapted to be fixed to the vehicle body.
7. Diverter acoustic insulation according to claim 6, characterized in that the rib (12) is of closed annular configuration.
8. A sound-insulating structure for a steering gear according to claim 7, wherein the bottom end surface of the protective cover (1) is further provided with two stopper projections (13); wherein the content of the first and second substances,
the two limiting lugs (13) enter the through holes, and the outer edges of the limiting lugs are in clearance fit with the inner walls of the through holes to prevent the protective cover (1) from rotating excessively in the circumferential direction.
9. A sound insulating structure for a steering gear according to claim 8, wherein said outer ring (2) and said inner ring (3) are made of plastic.
10. A sound-insulating structure for steering gears according to claim 9 characterized in that the protective cover (1) is made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920482741.6U CN209972365U (en) | 2019-04-11 | 2019-04-11 | Steering gear sound insulation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920482741.6U CN209972365U (en) | 2019-04-11 | 2019-04-11 | Steering gear sound insulation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209972365U true CN209972365U (en) | 2020-01-21 |
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ID=69257336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920482741.6U Active CN209972365U (en) | 2019-04-11 | 2019-04-11 | Steering gear sound insulation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209972365U (en) |
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2019
- 2019-04-11 CN CN201920482741.6U patent/CN209972365U/en active Active
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