CN111231859A - Multi-level steering column dust cover - Google Patents
Multi-level steering column dust cover Download PDFInfo
- Publication number
- CN111231859A CN111231859A CN202010152201.9A CN202010152201A CN111231859A CN 111231859 A CN111231859 A CN 111231859A CN 202010152201 A CN202010152201 A CN 202010152201A CN 111231859 A CN111231859 A CN 111231859A
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- Prior art keywords
- wall
- boss
- steering column
- mounting
- cover
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0846—Insulating elements, e.g. for sound insulation for duct, cable or rod passages, e.g. between engine and passenger compartments
- B60R13/0853—Insulating elements, e.g. for sound insulation for duct, cable or rod passages, e.g. between engine and passenger compartments specially adapted for movable parts, e.g. gears levers, pedals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Sealing Devices (AREA)
- Steering Controls (AREA)
Abstract
The invention discloses a multi-level steering column dust cover.A mounting through cavity is arranged in a cover body, an internal sealing assembly is arranged at the first end of the mounting through cavity, an annularly extending fixing plate mounting part is arranged on the outer wall of the cover body, a plurality of annular sealing ribs extending around the cover body are arranged on one side of the fixing plate mounting part, which is far away from the internal sealing assembly, an mounting opening is arranged in the middle of a front tail plate fixing plate, and the front tail plate fixing plate is sleeved outside the cover body through the mounting opening and is arranged on one side, which is close to the internal sealing assembly, of the fixing; the front tail plate fixing plate and the front tail plate are assembled on the vehicle body through bolts in a locking mode, and the locking assembling force can be transmitted to the sealing ribs of the cover body, so that the sealing and sound insulation effects are reinforced; the steering shaft passes through the inside seal assembly of the one end assembly of the cover body, plays sealed and syllable-dividing effect, the travelling comfort when guaranteeing to turn to simultaneously.
Description
Technical Field
The invention relates to the field of automobile steering gears, in particular to a multi-level steering column dust cover.
Background
The automobile steering device is used for properly converting steering torque and steering angle from a steering wheel and outputting the steering torque and steering angle to a steering pull rod mechanism so as to steer an automobile, and the steering device is essentially a speed reduction transmission device. Because the steering wheel is arranged in the cab and the steering pull rod mechanism is connected with wheels outside the cab, a steering shaft connecting the steering wheel and the steering pull rod mechanism is necessarily connected from the cab to the outside of the cab, and in order to provide a passing space of the steering shaft, the front tail board of the automobile must be subjected to space avoidance; the steering column dust cover is just the avoidance of the sealed front tail plate area, and the influence of the environment outside the cockpit on the environment in the cockpit is effectively isolated.
Meanwhile, with the development of new energy automobiles, the requirements of the automobiles on noise in the cockpit are higher and higher, and meanwhile, the requirements of the steering column dust cover on water sealing are more and more severe due to the fact that the requirements of various standards on automobile wading are tightened, so that the research and development of the steering dust cover which has a good sound insulation effect and can meet the stricter water sealing test is urgent.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a multi-level steering column dust cover.
The invention provides a multi-level steering column dust cover, which comprises: the device comprises a cover body, a front tail plate fixing plate and an internal sealing assembly;
the internal portion of cover is equipped with the installation and leads to the chamber, and inside seal assembly installs the first end that the chamber was led to in the installation, cover body outer wall are equipped with the fixed plate installation department that the annular extends, inside seal assembly one side is kept away from to the fixed plate installation department is equipped with a plurality of annular seal muscle that extend around the cover body, and preceding tailboard fixed plate middle part is equipped with the erection opening, and preceding tailboard fixed plate passes through the erection opening cover is established at the external portion of cover and is installed the fixed plate installation department is close to inside.
Preferably, the fixed plate installation part is provided with an installation boss towards one side of the front tail plate fixed plate, and the front tail plate fixed plate is provided with an installation through hole matched with the installation boss.
Preferably, a V-shaped buffer groove which extends annularly around the cover body is arranged on one side of the fixing plate mounting part facing the internal sealing component.
Preferably, the inner seal assembly comprises a front cover, a slip ring, a housing, a bottom cover;
the bottom is located the installation leads to in the first end opening in chamber and follows first end opening inner wall annular extension, and the casing cover is established the installation leads to the outside of the first end in chamber, and shells inner wall is equipped with the support boss, supports the boss and is located the bottom top, and the slip ring is located the casing and is located the support boss top, and the protecgulum cover is established outside the casing, and the protecgulum inner wall is equipped with and is used for the spacing boss of slip ring.
Preferably, the outer wall of the bottom cover is provided with a first clamping groove, the inner wall of the shell is provided with a first clamping protrusion matched with the first clamping groove, the outer wall of the shell is provided with a second clamping groove, and the inner wall of the front cover is provided with a second clamping protrusion matched with the second clamping groove.
Preferably, the first end opening inner wall of installation logical chamber is equipped with the installation boss of annular extension, and the bottom outer wall is equipped with the mounting groove with installation boss complex.
Preferably, the sealing device further comprises an annular sealing felt, the inner wall of the bottom cover forms a step structure extending along the mounting boss, and the annular sealing felt is located between the limiting boss and the step structure.
Preferably, the top of the supporting boss is provided with a first limiting bulge for limiting the sliding ring, and the bottom of the limiting boss is provided with a second limiting bulge for limiting the sliding ring;
the bottom of the supporting boss is provided with a third limiting bulge for limiting the annular sealing felt, and the top of the stepped structure is provided with a fourth limiting bulge for limiting the annular sealing felt.
Preferably, a sliding gap is preset between the outer wall of the sliding ring and the inner wall of the shell at intervals, and lubricating grease is filled in the sliding gap.
Preferably, the inner diameter of the installation through cavity decreases gradually towards the inner seal assembly.
According to the multi-level steering column dust cover, the inner part of the cover body is provided with the installation through cavity, the internal sealing assembly is installed at the first end of the installation through cavity, the outer wall of the cover body is provided with the fixing plate installation part which extends in an annular mode, one side, far away from the internal sealing assembly, of the fixing plate installation part is provided with a plurality of annular sealing ribs which extend around the cover body, the middle part of the front tail plate fixing plate is provided with the installation opening, and the front tail plate fixing plate is sleeved outside the cover body through the installation opening and installed on one side, close to the internal sealing; the front tail plate fixing plate and the front tail plate are assembled on the vehicle body through bolts in a locking mode, and the locking assembling force can be transmitted to the sealing ribs of the cover body, so that the sealing and sound insulation effects are reinforced; the steering shaft passes through the inside seal assembly of the one end assembly of the cover body, plays sealed and syllable-dividing effect, the travelling comfort when guaranteeing to turn to simultaneously.
Drawings
Fig. 1 is a schematic cross-sectional view of a multi-stage steering column dust cover according to the present invention.
Fig. 2 is a schematic top view of a multi-stage steering column dust cover according to the present invention.
FIG. 3 is a schematic structural view of an inner seal assembly of a multi-stage steering column dust cover according to the present invention.
Detailed Description
Fig. 1 to 3 are schematic cross-sectional views of a multi-stage steering column dust cover according to the present invention, fig. 1 is a schematic top view of the multi-stage steering column dust cover according to the present invention, and fig. 3 is a schematic structural view of an inner seal assembly of the multi-stage steering column dust cover according to the present invention.
Referring to fig. 1 and 2, the present invention provides a multistage steering column dust cover, including: the device comprises a cover body 1, a front tail plate fixing plate 2 and an internal sealing assembly 3;
the chamber is led to in the inside installation that is equipped with of the cover body 1, and inside seal assembly 3 installs the first end that the chamber is led to in the installation, 1 outer wall of the cover body is equipped with the annular fixed plate installation department that extends, 3 one side of inside seal assembly are kept away from to the fixed plate installation department is equipped with a plurality of annular seal muscle that extend around the cover body 1, and 2 middle parts of preceding tailboard fixed plate are equipped with the installation opening, and preceding tailboard fixed plate 2 passes through the installation opening cover is established at 1 outside of the cover body and is installed the fixed plate installation department.
In the specific working process of the multi-level steering column dust cover, the dust cover is assembled on a vehicle body through the front tail plate fixing plate and the front tail plate in a locking mode through bolts, and the sealing ribs of the cover body installation part are deformed through locking assembly force, so that sealing is strengthened, and a sound insulation effect is achieved; meanwhile, the steering shaft is arranged in the mounting through cavity through an internal sealing assembly assembled at the other end of the cover body, and sealing and sound insulation effects are achieved.
In this embodiment, in the proposed multi-stage steering column dust cover, an installation through cavity is formed in a cover body, an internal sealing assembly is installed at a first end of the installation through cavity, an annularly extending fixing plate installation part is arranged on the outer wall of the cover body, a plurality of annular sealing ribs extending around the cover body are arranged on one side, away from the internal sealing assembly, of the fixing plate installation part, an installation opening is formed in the middle of a front tail plate fixing plate, and the front tail plate fixing plate is sleeved outside the cover body through the installation opening and installed on one side, close to the internal sealing assembly, of the fixing plate installation part; the front tail plate fixing plate and the front tail plate are assembled on the vehicle body through bolts in a locking mode, and the locking assembling force can be transmitted to the sealing ribs of the cover body, so that the sealing and sound insulation effects are reinforced; the steering shaft passes through the inside seal assembly of the one end assembly of the cover body, plays sealed and syllable-dividing effect, the travelling comfort when guaranteeing to turn to simultaneously.
In the specific embodiment of the front and rear plate fixing plate and the cover body, the fixing plate mounting part is provided with a mounting boss 11 towards one side of the front and rear plate fixing plate 2, the front and rear plate fixing plate 2 is provided with a mounting through hole matched with the mounting boss 11, and the front and rear plate fixing plate is positioned to prevent the front and rear plate fixing plate from rotating during working; the mounting boss and the mounting through hole can adopt interference fit in a specific mounting mode.
In other embodiments of the cover body, the fixing plate mounting portion is provided with a V-shaped buffer groove 12 extending annularly around the cover body 1 toward the side of the internal seal assembly 3; v type groove leads to the chamber with the installation and forms two cavity structures, provides the deformation space, can fall the noise of multilayer simultaneously.
Referring to fig. 3, in a specific design of the internal sealing assembly, the internal sealing assembly 3 includes a front cover 4, a sliding ring 5, a housing 6, and a bottom cover 8;
the bottom 8 is located the installation leads to in the first end opening in chamber and follows first end opening inner wall annular extension, and 6 covers of casing are established the installation leads to the chamber first end outside, and 6 inner walls of casing are equipped with support boss 61, and support boss 61 is located bottom 8 top, and sliding ring 5 is located casing 6 and is located support boss 61 top, and 4 covers of protecgulum are established at 6 outsides of casing, and 4 inner walls of protecgulum are equipped with and are used for the spacing boss 41 of 5 spacing of sliding ring.
In the specific working process of the internal sealing assembly, the steering shaft penetrates through the sealing felt and then is in interference fit with the inner hole of the sliding ring, and the sliding ring is driven to rotate in the shell when the steering shaft works, so that the steering force of a steering wheel cannot be influenced; wherein the slip ring acts as a secondary seal.
In a further embodiment of the bottom cover, the outer wall of the bottom cover 8 is provided with a first clamping groove, the inner wall of the shell 6 is provided with a first clamping bulge matched with the first clamping groove, the outer wall of the shell 6 is provided with a second clamping groove, and the inner wall of the front cover 4 is provided with a second clamping bulge matched with the second clamping groove; the assembly is convenient, and the falling off in the working process is prevented.
In other specific embodiments, an annularly extending mounting boss 11 is arranged on the inner wall of the first end opening of the mounting through cavity, and a mounting groove matched with the mounting boss 11 is arranged on the outer wall of the bottom cover 8; the bottom passes through the mounting groove and the cooperation of installation boss, improves the reliability of the two installations.
In a further specific embodiment, the sealing device further comprises an annular sealing felt 7, a step structure 81 extending along the mounting boss 11 is formed on the inner wall of the bottom cover 8, and the annular sealing felt 7 is positioned between the limiting boss 41 and the step structure 81; during installation, the steering shaft is in interference fit with the sealing felt, sealing and sound insulation effects are achieved, meanwhile, the sealing felt material is soft, the sealing felt can rotate in the bottom cover, the steering force of the steering wheel cannot be influenced, and the sealing felt achieves three-level sealing.
In the specific design mode of the supporting boss, a first limiting bulge for limiting the sliding ring 5 is arranged at the top of the supporting boss, and a second limiting bulge for limiting the sliding ring 5 is arranged at the bottom of the limiting boss 41; a third limiting bulge for limiting the annular sealing felt 7 is arranged at the bottom of the supporting boss, and a fourth limiting bulge for limiting the annular sealing felt 7 is arranged at the top of the step structure 81; the sliding ring is limited through the first limiting protrusion and the second limiting protrusion, and the annular sealing felt is limited through the third limiting protrusion and the fourth limiting protrusion.
In the concrete design of slip ring, the slip ring has K type cross-section, and its inner wall is through two seal lips and steering spindle cooperation, and first spacing arch and second spacing arch can block respectively in the clearance between seal lip and the body.
In order to reduce the friction force between the sliding ring and the shell in the rotating process, a sliding gap is preset between the outer wall of the sliding ring 5 and the inner wall of the shell 6 at intervals, and lubricating grease is filled in the sliding gap.
In the specific design mode of the internal sealing assembly, the front cover, the shell and the bottom cover can be made of PBT (polybutylene terephthalate) materials with both strength and lubricity, and the sliding ring can be made of PA12 materials with better self-lubricity and wear resistance.
In other embodiments of the housing, the inner diameter of the installation through-space decreases in the direction of the inner sealing element 3.
The cover body is made of ethylene propylene diene monomer and rubber processing aids, wherein the rubber processing aids comprise calcium carbonate, magnesium silicate, benzyl triphenyl phosphorus chloride and bisphenol AF; the ethylene propylene diene monomer rubber has good high and low temperature resistance on one hand, and has low compression permanent deformation performance on the other hand, so that the sealing problem of the sealing gasket is effectively solved, the sealing performance, the heat resistance, the wear resistance and the mechanical performance of the sealing gasket matrix are effectively improved by the rubber processing aid, and the service life of the sealing gasket matrix is prolonged. In the actual production process, the high molecular polymer and the rubber processing aid are uniformly mixed and prepared by a rubber internal mixer, and then a sealing gasket matrix preformed piece is extruded by a forming machine; and then the sealing gasket matrix preformed piece is molded and pressed in a vulcanization press.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A multi-stage steering column dust cover, comprising: the device comprises a cover body (1), a front tail plate fixing plate (2) and an internal sealing assembly (3);
the cover body (1) is inside to be equipped with the installation and leads to the chamber, and install inside seal subassembly (3) the first end that the chamber was led to in the installation, the cover body (1) outer wall are equipped with the annular fixed plate installation department that extends, inside seal subassembly (3) one side is kept away from to the fixed plate installation department is equipped with a plurality of annular seal muscle (12) that extend around the cover body (1), and preceding tailboard fixed plate (2) middle part is equipped with the installation opening, and preceding tailboard fixed plate (2) pass through the installation opening cover is established at the cover body (1) outside and is installed the fixed plate installation department is close to inside seal subassembly (3.
2. The multi-stage steering column dust cover according to claim 1, wherein the fixing plate mounting portion is provided with a mounting boss (11) on a side facing the front and rear fixing plates (2), and the front and rear fixing plates (2) are provided with a mounting through hole engaged with the mounting boss (11).
3. Multistep steering column dust cover according to claim 1, characterized in that the side of the fixing plate mounting portion facing the inner seal assembly (3) is provided with a V-shaped buffer groove (12) extending annularly around the housing (1).
4. Multi-stage steering column dust cover according to claim 1, characterized in that the inner sealing assembly (3) comprises a front cover (4), a slip ring (5), a housing (6), a bottom cover (8);
bottom (8) are located the installation leads to in the first end opening in chamber and follows first end opening inner wall annular extends, and casing (6) cover is established the installation leads to the first end in chamber outside, and casing (6) inner wall is equipped with supports boss (61), supports boss (61) and is located bottom (8) top, and slip ring (5) are located casing (6) and are located and support boss (61) top, and the casing (6) outside is established in protecgulum (4) cover, and protecgulum (4) inner wall is equipped with and is used for spacing boss (41) to slip ring (5).
5. The multi-stage steering column dust cover according to claim 4, wherein the outer wall of the bottom cover (8) is provided with a first clamping groove, the inner wall of the housing (6) is provided with a first clamping protrusion matched with the first clamping groove, the outer wall of the housing (6) is provided with a second clamping groove, and the inner wall of the front cover (4) is provided with a second clamping protrusion matched with the second clamping groove.
6. The multi-stage steering column dust cover according to claim 4, wherein the inner wall of the first end opening of the mounting through cavity is provided with a mounting boss (11) extending annularly, and the outer wall of the bottom cover (8) is provided with a mounting groove matched with the mounting boss (11).
7. The multi-stage steering column dust cover according to claim 6, further comprising an annular sealing felt (7), wherein the inner wall of the bottom cover (8) forms a step structure (81) extending along the mounting boss (11), and the annular sealing felt (7) is located between the limit boss (41) and the step structure (81).
8. The multi-stage steering column dust cover according to claim 7, wherein the support boss (61) is provided at a top thereof with a first stopper protrusion for stopping the slip ring (5), and the stopper boss (41) is provided at a bottom thereof with a second stopper protrusion for stopping the slip ring (5);
the bottom of the supporting boss (61) is provided with a third limiting protrusion for limiting the annular sealing felt (7), and the top of the step structure (81) is provided with a fourth limiting protrusion for limiting the annular sealing felt (7).
9. The multi-stage steering column dust cover according to claim 4, wherein a predetermined sliding gap is provided between the outer wall of the sliding ring (5) and the inner wall of the housing (6), and the sliding gap is filled with grease.
10. Multi-stage steering column dust cover according to claim 1, characterised in that the inner diameter of the mounting through cavity tapers towards the inner seal assembly (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010152201.9A CN111231859A (en) | 2020-03-06 | 2020-03-06 | Multi-level steering column dust cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010152201.9A CN111231859A (en) | 2020-03-06 | 2020-03-06 | Multi-level steering column dust cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111231859A true CN111231859A (en) | 2020-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010152201.9A Pending CN111231859A (en) | 2020-03-06 | 2020-03-06 | Multi-level steering column dust cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111231859A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112009394A (en) * | 2020-09-11 | 2020-12-01 | 宝能(广州)汽车研究院有限公司 | Steering column assembly of vehicle and vehicle |
-
2020
- 2020-03-06 CN CN202010152201.9A patent/CN111231859A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112009394A (en) * | 2020-09-11 | 2020-12-01 | 宝能(广州)汽车研究院有限公司 | Steering column assembly of vehicle and vehicle |
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