CN216886871U - Steering column dustproof construction - Google Patents
Steering column dustproof construction Download PDFInfo
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- CN216886871U CN216886871U CN202220095200.XU CN202220095200U CN216886871U CN 216886871 U CN216886871 U CN 216886871U CN 202220095200 U CN202220095200 U CN 202220095200U CN 216886871 U CN216886871 U CN 216886871U
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- sealing ring
- dust cover
- shell
- steering column
- dust
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Abstract
The utility model relates to a steering column dustproof structure which can effectively prevent noise from entering a cab through an opening of a front wall plate, improve the NVH (noise, vibration and harshness) condition in the cab and improve the sealing effect and the waterproof effect of the opening of the front wall plate. Steering column dustproof construction includes the dust cover assembly, with the front wall board of the lower extreme fixed connection of dust cover assembly, with the upper end complex jackshaft of dust cover assembly, characterized by: the dust cover assembly comprises a shell which is a stepped rotary body, an upper cover matched with the upper end of the shell, a lower cover of which the upper part is matched and connected with the lower part of the inner wall of the shell, and a dust cover body of which the upper end is matched and connected between the inner wall of the lower end part of the shell and the outer wall of the upper end of the lower cover, wherein the lower end of the dust cover body is positioned and connected around the opening of the front wall plate through a pressure plate member and a threaded fastener; still including establishing first sealing ring and second sealing ring in casing upper portion and the middle part, first sealing ring and second sealing ring all with jackshaft interference fit.
Description
Technical Field
The utility model relates to an automobile steering system, in particular to a steering column dustproof structure.
Background
With the rapid development of the automobile industry, people have higher and higher requirements on automobile noise control, and particularly, the noise level in a cab directly influences the driving feeling of a driver. The steering column assembly positioned in the cab is connected with the steering gear assembly through an intermediate shaft, and the intermediate shaft passes through a front wall plate hole. For the convenience of assembly, the diameter of the opening of the front panel needs to be larger than the contour size of the enveloping joint, which easily causes external noise to be transmitted into the cab. The sealed effect of antetheca trompil will directly influence the noise intensity that the child is noisy to pass to in the driver's cabin to influence driver's driving experience. Therefore, a novel dust cover needs to be developed, so that noise outside a cab is prevented from being transmitted into the cab as much as possible, the requirement of NVH in the cab is met, and the dust cover has a waterproof effect.
CN 204372180U discloses "a dust cover for steering column of automobile". The technical problem to be solved is that the steering column dust cover and the steering column are not well matched, and the phenomena of poor NVH effect, water leakage, dust leakage and the like are caused by the fact that the steering column dust cover and a front wall plate of a vehicle body are not assembled in place. The dust cover consists of a body, an embedded part and a pressure plate; the insert and the pressure plate are assembled on the body; the embedded part is embedded on the body; the pressing plate is fixedly assembled on the body through a convex column on the steering body; the steering column penetrates into the embedded part, and the lip of the embedded part is in clearance fit with the steering column. The structure is simple and reliable, and the problem of poor NVH effect and the problem of no installation position can be solved.
CN 202624331U discloses a 'steering gear dust cover', which comprises a dust cover body, wherein a snap ring is arranged at an opening at the upper end of the dust cover body, a clamp hoop is arranged at the lower end of the dust cover body, and the snap ring is clamped in a front wall plate and is in interference fit with the front wall plate; the lower extreme of dust cover body passes through the clamp and is connected with the steering gear fastening. The steering gear dust cover can be tightly combined with a steering gear and a front wall plate, so that the sealing effect and the waterproof effect of the matching part of the steering gear and the front wall plate are improved.
The technical solutions disclosed in both patent documents are, of course, a useful attempt in the technical field.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a steering column dustproof structure which can effectively prevent noise from entering a cab through an opening of a front wall plate, improve the NVH condition in the cab and improve the sealing effect and the waterproof effect of the opening of the front wall plate.
The utility model relates to a steering column dustproof structure, which comprises a dustproof cover assembly, a front wall plate fixedly connected with the lower end of the dustproof cover assembly, and an intermediate shaft matched with the upper end part of the dustproof cover assembly, and is characterized in that: the dust cover assembly comprises a shell which is a stepped rotary body, an upper cover matched with the upper end of the shell, a lower cover of which the upper part is matched and connected with the lower part of the inner wall of the shell, and a dust cover body of which the upper end is matched and connected between the inner wall of the lower end part of the shell and the outer wall of the upper end of the lower cover, wherein the lower end of the dust cover body is positioned and connected around the opening of the front wall plate through a pressure plate member and a threaded fastener; still including establishing first sealing ring and second sealing ring in casing upper portion and the middle part, first sealing ring and second sealing ring all with jackshaft interference fit.
Furthermore, the first sealing ring and the second sealing ring have the same structure, the inner walls of the first sealing ring and the second sealing ring are respectively provided with an annular lip edge which inclines upwards and downwards, and the section of the first sealing ring and the section of the second sealing ring is K-shaped.
Furthermore, a first boss is arranged between the upper part and the middle part of the inner wall of the shell, and a second boss is arranged between the upper part and the lower part of the inner wall of the lower cover;
the first sealing ring arranged in the upper part of the shell is positioned between the lower surface of the upper cover and the upper surface of the first boss; and the second sealing ring arranged in the middle of the shell is positioned between the lower surface of the first boss and the upper surface of the second boss.
Further, an outer ring groove is formed in the lower portion of the outer wall of the lower cover, and an inner convex ring is arranged at the upper end of the dust cover body; the inner convex ring is correspondingly matched and connected with the outer annular groove, and the upper end of the dust cover body is clamped between the lower part of the inner wall of the shell and the outer annular groove.
Further, a flange structure is arranged at the lower end of the dust cover body, and three positioning pins and three connecting holes are arranged on the flange structure at equal intervals; the shape of the pressure plate component is matched with the flange structure at the lower end of the dust cover body, three positioning holes and three through holes are arranged at the edge of the pressure plate component at equal intervals, the three positioning holes are respectively matched with the three positioning pins in a one-to-one correspondence mode, and the three through holes are respectively corresponding to the three connecting holes in a one-to-one correspondence mode and are connected to the periphery of the opening of the front wall plate in a positioning mode through threaded fasteners.
Further, the clamp plate component is a metal plate, the dust cover body is made of rubber, and the compression amount of a flange structure of the dust cover body in contact with the front wall plate needs to be larger than 2 mm.
Further, an annular groove is formed below the flange structure of the dust cover body.
Furthermore, the upper cover and the shell are in clearance fit, and lubricating grease is filled in the clearance.
Compared with the prior art, the utility model has the following advantages:
because the first sealing ring and the second sealing ring with K-shaped sections are arranged in the dust cover assembly, the first sealing ring and the second sealing ring have multiple functions of water resistance, dust resistance and noise resistance, and the sealing effect and the waterproof effect of the opening of the front wall plate are obviously improved; can not only effectually prevent that water and dust from getting into the steering gear, can prevent again that the noise from getting into the driver's cabin from the trompil of front wall board to NVH situation in the driver's cabin has been improved.
Drawings
FIG. 1 is a cross-sectional view of a double K-type dust boot ring;
FIG. 2 is an exploded view of a double K-ring dust cover arrangement;
FIG. 3 is an assembly view of a double K-ring dust cap;
FIG. 4 is a rear cross-sectional view of the double K-ring dust cap installed;
in the figure (technical features):
1, covering the upper cover;
2-a first sealing ring;
3-shell, 31-first boss;
4-a second sealing ring;
5-lower cover, 51-second boss, 52-outer ring groove;
6, a dust cover body, 61, an annular groove, 62, an inner convex ring, 63, a positioning pin and 64, connecting holes;
7-a pressure plate component, 71-a positioning hole, 72-a via hole;
10-dust cover assembly, 20-front wall plate, 30-middle shaft.
Detailed Description
The technical scheme of the utility model is explained in detail in the following with the accompanying drawings:
referring to fig. 1, 2, 3 and 4, a steering column dust-proof structure includes a dust cover assembly 10, a front wall plate 20 fixedly connected to a lower end of the dust cover assembly, and an intermediate shaft 30 engaged with an upper end of the dust cover assembly, and is characterized in that:
the dust cover assembly 10 comprises a shell 3 which is a stepped rotary body, an upper cover 1 matched with the upper end of the shell, a lower cover 5 of which the upper part is matched and connected with the lower part of the inner wall of the shell, and a dust cover body 6 of which the upper end is matched and connected between the inner wall of the lower end part of the shell and the outer wall of the upper end of the lower cover, wherein the lower end of the dust cover body 6 is positioned and connected around an opening of a front wall plate 20 through a pressure plate member 7 and a threaded fastener; the middle shaft 30 is in interference fit with the first sealing ring 2 and the second sealing ring 4; can not only effectually prevent that water and dust from getting into the steering gear, can prevent again that the noise from getting into the driver's cabin from the trompil of front wall board to improve the interior NVH situation of driver's cabin.
The first sealing ring 2 and the second sealing ring 4 have the same structure, and the inner walls of the first sealing ring and the second sealing ring are provided with annular lips which incline upwards and downwards respectively, and the cross section of the first sealing ring and the second sealing ring is in a K shape. The K-shaped structure enables the first sealing ring and the second sealing ring to have multiple functions of water resistance, dust resistance and noise resistance.
A first boss 31 is arranged between the upper part and the middle part of the inner wall of the shell 3, and a second boss 51 is arranged between the upper part and the lower part of the inner wall of the lower cover 5; the first sealing ring 2 arranged in the upper part of the shell 3 is positioned between the lower surface of the upper cover 1 and the upper surface of the first boss 31; the second sealing ring 4 provided in the middle of the housing 3 is located between the lower face of the first boss 31 and the upper face of the second boss 51. Thus, the first sealing ring and the second sealing ring can be reliably prevented from falling off.
An outer ring groove 52 is arranged at the lower part of the outer wall of the lower cover 5, and an inner convex ring 62 is arranged at the upper end of the dust cover body 6; the inner ring 62 is correspondingly matched and connected with the outer ring groove 52, and the upper end of the dust cover body 6 is clamped between the lower part of the inner wall of the shell 3 and the outer ring groove 52; so that the mating connection is reliable.
The lower end of the dust cover body 6 is provided with a flange structure, and three positioning pins 63 and three connecting holes 64 are arranged on the flange structure at equal intervals; the shape of the pressure plate member 7 is matched with the flange structure at the lower end of the dust cover body 6, three positioning holes 71 and three through holes 72 are arranged at equal intervals on the edge of the pressure plate member 7, the three positioning holes 71 are respectively matched with the three positioning pins 63 in a one-to-one correspondence mode, and the three through holes 72 are respectively matched with the three connecting holes 64 in a one-to-one correspondence mode and are positioned and connected around the opening of the front wall plate 20 through threaded fasteners.
The pressure plate component 7 is a metal plate, the dust cover body 6 is made of rubber, and the compression amount of a flange structure of the dust cover body 6 in contact with the front wall plate 20 needs to be larger than 2mm so as to prevent noise from entering a cab through an opening of the front wall plate.
An annular groove 61 is provided below the flange structure of the dust cap body 6. So as to prevent the first sealing ring and the second sealing ring from being worn by the intermediate shaft during the jumping process.
The upper cover 1 and the shell 3 are in clearance fit, and lubricating grease is filled in the clearance to reduce noise and abrasion in the rotating motion process of the first sealing ring, the second sealing ring and the intermediate shaft.
Claims (8)
1. The utility model provides a steering column dustproof construction, includes dust cover assembly (10), with dust cover assembly's lower extreme fixed connection's front wall board (20), with dust cover assembly's upper end complex jackshaft (30), characterized by: the dust cover assembly (10) comprises a shell (3) which is a stepped rotary body, an upper cover (1) matched with the upper end of the shell, a lower cover (5) with the upper part matched and connected with the lower part of the inner wall of the shell, and a dust cover body (6) with the upper end matched and connected between the inner wall of the lower end part of the shell and the outer wall of the upper end of the lower cover, wherein the lower end of the dust cover body (6) is positioned and connected around an opening of the front wall plate (20) through a pressure plate member (7) and a threaded fastener; still including establishing first sealing ring (2) and second sealing ring (4) in casing (3) upper portion and middle part, first sealing ring (2) and second sealing ring (4) all with jackshaft (30) interference fit.
2. The steering column dust prevention structure according to claim 1, characterized in that: the first sealing ring (2) and the second sealing ring (4) are identical in structure, the inner walls of the first sealing ring and the second sealing ring are respectively provided with an annular lip edge which inclines upwards and downwards, and the section of the first sealing ring and the section of the second sealing ring are K-shaped.
3. The steering column dust prevention structure according to claim 1 or 2, characterized in that: a first boss (31) is arranged between the upper part and the middle part of the inner wall of the shell (3), and a second boss (51) is arranged between the upper part and the lower part of the inner wall of the lower cover (5);
the first sealing ring (2) arranged in the upper part of the shell (3) is positioned between the lower surface of the upper cover (1) and the upper surface of the first boss (31); and a second sealing ring (4) arranged in the middle of the shell (3) is positioned between the lower surface of the first boss (31) and the upper surface of the second boss (51).
4. The steering column dust prevention structure according to claim 3, characterized in that: an outer ring groove (52) is formed in the lower portion of the outer wall of the lower cover (5), and an inner ring (62) is arranged at the upper end of the dust cover body (6); the inner convex ring (62) is correspondingly matched and connected with the outer annular groove (52), and the upper end of the dust cover body (6) is clamped between the lower part of the inner wall of the shell (3) and the outer annular groove (52).
5. The steering column dust prevention structure according to claim 4, characterized in that: the lower end of the dust cover body (6) is provided with a flange structure, and three positioning pins (63) and three connecting holes (64) are arranged on the flange structure at equal intervals; the shape of the pressure plate component (7) is matched with a flange structure at the lower end of the dust cover body (6), three positioning holes (71) and three through holes (72) are arranged at the edge of the pressure plate component (7) at equal intervals, the three positioning holes (71) are respectively matched with the three positioning pins (63) in a one-to-one correspondence mode, and the three through holes (72) are respectively corresponding to the three connecting holes (64) in a one-to-one correspondence mode and are positioned and connected around the open hole of the front wall plate (20) through threaded fasteners.
6. The steering column dust prevention structure according to claim 5, characterized in that: the dust cover is characterized in that the pressing plate component (7) is a metal plate, the dust cover body (6) is made of rubber, and the compression amount of a flange structure, in contact with the front wall plate (20), of the dust cover body (6) needs to be larger than 2 mm.
7. The steering column dust prevention structure according to claim 4 or 5, characterized in that: an annular groove (61) is arranged below the flange structure of the dust cover body (6).
8. The steering column dust prevention structure according to claim 1, characterized in that: the upper cover (1) and the shell (3) are in clearance fit, and lubricating grease is filled in the clearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220095200.XU CN216886871U (en) | 2022-01-14 | 2022-01-14 | Steering column dustproof construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220095200.XU CN216886871U (en) | 2022-01-14 | 2022-01-14 | Steering column dustproof construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216886871U true CN216886871U (en) | 2022-07-05 |
Family
ID=82212095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220095200.XU Active CN216886871U (en) | 2022-01-14 | 2022-01-14 | Steering column dustproof construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216886871U (en) |
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2022
- 2022-01-14 CN CN202220095200.XU patent/CN216886871U/en active Active
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