CN218863269U

CN218863269U - Sealing structure for via hole of vehicle body steering intermediate shaft and vehicle

Info

Publication number: CN218863269U
Application number: CN202222538640.0U
Authority: CN
Inventors: 程翔; 周建根; 卢洪雨; 曹明山
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2023-04-14
Anticipated expiration: 2032-09-23

Abstract

The utility model relates to a car body turns to seal structure and vehicle of jackshaft via hole. The sealing structure of the vehicle body steering intermediate shaft through hole comprises a sealing main body penetrating through a vehicle body, wherein the sealing main body is provided with a through hole for the steering intermediate shaft to penetrate through; the one end of sealed main part is equipped with and is used for sealing up the first sealing member of cooperation in order to seal cockpit side panel beating via hole with cockpit side panel beating, and the other end is equipped with and is used for sealing up the second sealing member of cooperation in order to seal cabin side panel beating via hole with cabin side panel beating. The utility model discloses a double-deck sealed, prevent simultaneously that debris such as dust, water of cockpit side, cabin side from getting into inside the automobile body to the condition of avoiding appearing the automobile body corruption takes place. The two layers of sealing can also reduce the noise entering the cockpit, and improve the NVH sound insulation performance.

Description

Sealing structure for vehicle body steering intermediate shaft via hole and vehicle

Technical Field

The utility model belongs to car a steering system field, concretely relates to automobile body turns to seal structure and vehicle of jackshaft via hole.

Background

The steering system consists of a steering control mechanism and a steering transmission mechanism, a transmission path is long from a steering wheel to wheels, the steering transmission mechanism penetrates through a front panel (a vehicle body sheet metal) of a vehicle body, and therefore good sealing performance is required between the steering transmission mechanism and the vehicle body sheet metal, dust entering into the vehicle is prevented, and noise is reduced.

Most of the automobile body panel beating among the prior art is the individual layer panel beating, is used for sealed seal structure between steering drive mechanism and the automobile body panel beating at present to only satisfy the sealed demand of individual layer panel beating. In order to improve the safety performance of an automobile (especially a new energy automobile), in the prior art, an automobile body metal plate adopts a double-layer metal plate mode, and the automobile body metal plate comprises a cockpit side metal plate and a cabin side metal plate which are arranged at intervals, wherein the cockpit side metal plate is provided with a cockpit side metal plate through hole, the cabin side metal plate is provided with a cabin side metal plate through hole, and two through holes are all used for a steering middle shaft of the steering transmission mechanism to run through. But one of them is sealed in current seal structure can only realize cockpit side panel beating and the cabin side panel beating, and dust and water etc. easily get into between two panel beating from the via hole of another panel beating during the use, can appear corroding the phenomenon after long-time the use, reduce the security performance.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that: the sealing structure for the through hole of the steering intermediate shaft of the automobile body is provided aiming at the problem that the existing sealing structure can only realize the sealing of the through hole of the metal plate on the side of the cockpit or the through hole of the metal plate on the side of the cabin and the automobile body is easy to corrode after sundries enter the automobile body.

In order to solve the technical problem, on the one hand, an embodiment of the present invention provides a sealing structure for a via hole of a steering intermediate shaft of a vehicle body, including a sealing main body for penetrating through the vehicle body, wherein the sealing main body is provided with a through hole for the steering intermediate shaft to pass through; the one end of sealed main part is equipped with and is used for sealing up the first sealing member of cooperation in order to seal cockpit side panel beating via hole with cockpit side panel beating, and the other end is equipped with and is used for sealing up the second sealing member of cooperation in order to seal cabin side panel beating via hole with cabin side panel beating.

Optionally, the first sealing member includes a first elastic sealing lip and a second elastic sealing lip which are separately disposed on two sides of the cockpit-side metal plate, and the first elastic sealing lip and the second elastic sealing lip are used for being matched and clamped with the cockpit-side metal plate.

Optionally, the second sealing member includes a third elastic sealing lip and a fourth elastic sealing lip separately disposed on two sides of the cabin side metal plate, and the third elastic sealing lip and the fourth elastic sealing lip are used for cooperatively clamping the cabin side metal plate. Optionally, an intermediate shaft sealing component is arranged in the through hole and used for being in sealing fit with the steering intermediate shaft, and the intermediate shaft sealing component is located between the first sealing component and the second sealing component;

the intermediate shaft sealing component comprises an annular framework fixed on the sealing main body and a sealing piece arranged on the annular framework, the annular framework is used for supporting the steering intermediate shaft, and the sealing piece is used for being in sealing fit with the steering intermediate shaft.

Optionally, two ends of the annular framework are respectively provided with framework outer stop ring tables arranged in opposite directions, a sealing main body inner stop ring table is arranged on the hole wall of the through hole corresponding to the framework outer stop ring tables, and the framework outer stop ring tables and the sealing main body inner stop ring tables are in stop fit along the extending direction of the through hole to limit the annular framework.

Optionally, the annular framework is provided with an anti-falling bulge protruding outwards, and the anti-falling bulge is wedged into the sealing main body and used for preventing the annular framework from falling out of the sealing main body;

annular skeleton inwards the protrusion be provided with skeleton support protrusion, skeleton support protrusion is used for supporting turn to on the jackshaft.

Optionally, a frame inner stop ring table is arranged on the inner side of the annular frame, a fixing ring is fixed on the inner side of the annular frame, and the fixing ring presses the sealing element onto the frame inner stop ring table.

Optionally, one of the inner side surface of the annular framework and the outer peripheral surface of the fixing ring is provided with a ring groove, and the other is provided with a ring platform, wherein the ring platform is used for being clamped into the ring groove and used for fixing the annular framework and the fixing ring together;

the inner circumferential surface of the fixing ring is provided with a fixing ring supporting bulge, and the fixing ring supporting bulge is used for supporting the steering intermediate shaft.

Optionally, at least two sealing elements are sequentially arranged at intervals along the axial direction of the steering intermediate shaft, and the at least two sealing elements are respectively arranged at two ends of the annular framework;

the sealing element comprises at least two sealing lips which are arranged at intervals in sequence along the axial direction of the steering intermediate shaft.

In the sealing structure of the vehicle body steering intermediate shaft through hole, the first sealing part of the sealing main body seals the metal plate through hole on the side of the cockpit when in use, the second sealing part seals the metal plate through hole on the side of the cabin when in use, double-layer sealing is realized, and meanwhile, impurities such as dust, water and the like on the side of the cockpit and the side of the cabin are prevented from entering the interior of the vehicle body, so that the occurrence of the corrosion condition of the vehicle body is avoided. The two layers of sealing can also reduce the noise entering the cockpit, and improve the NVH sound insulation performance.

On the other hand, the embodiment of the utility model provides a still provide a vehicle, include cockpit side panel beating, cabin side panel beating and turn to the jackshaft, still include foretell automobile body and turn to the seal structure of jackshaft via hole.

Drawings

Fig. 1 is a schematic view of a sealing structure of a via hole of a vehicle body steering intermediate shaft according to an embodiment of the present invention;

FIG. 2 is an external view of the rubber seal structure of FIG. 1;

FIG. 3 is a view of the ring frame of FIG. 1;

FIG. 4 is a cross-sectional view of the ring frame of FIG. 1;

FIG. 5 is a schematic view of the ring frame, the fixing ring, and the sealing member of FIG. 1 assembled together;

FIG. 6 is an external view of the retaining ring of FIGS. 1 and 5;

fig. 7 is a schematic view of a sealing structure of a via hole of a vehicle body steering intermediate shaft according to an embodiment of the present invention in use;

fig. 8 is a comparison graph of NVH sound insulation performance test results provided by an embodiment of the present invention.

The reference numerals in the specification are as follows:

100. a rubber sealing structure; 101. a sealing body; 102. a first resilient sealing lip; 103. a second resilient sealing lip; 104. a third resilient sealing lip; 105. a fourth resilient sealing lip; 106. a handle; 107. a ring block platform is arranged in the sealing main body; 200. an annular skeleton; 201. a framework outer stop ring platform; 202. a framework inner stop ring platform; 203. a ring groove; 204. chamfering; 205. a framework support boss; 206. the anti-drop bulge; 300. a seal member; 301. a sealing lip; 400. a fixing ring; 401. a ring platform; 402. the fixing ring supports the projection; 500. an engine room side metal plate; 600. a cockpit side metal plate; 700. turning to the intermediate shaft.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects of the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 to 8, an embodiment of the present invention provides a sealing structure for a vehicle body steering intermediate shaft via hole, including a rubber sealing structure 100 and an intermediate shaft sealing component, where the rubber sealing structure 100 is used to seal the steering intermediate shaft via hole of the vehicle body, so as to prevent external impurities from entering the vehicle body through the steering intermediate shaft via hole; the intermediate shaft sealing member is used to seal the steering intermediate shaft 700 and prevent external foreign matter from entering the cabin through the steering intermediate shaft 700.

As shown in fig. 1 and 2, the rubber sealing structure 100 is an integrated rubber structure, the rubber sealing structure 100 includes a sealing main body 101, the sealing main body 101 is a cylindrical structure with two open ends, and a steering intermediate shaft through hole (not marked in the figures) is formed in the sealing main body 101 for the steering intermediate shaft 700 to pass through. When in use, the sealing body 101 penetrates through the cabin-side sheet metal through hole of the cabin-side sheet metal 600 and the cabin-side sheet metal through hole of the cabin-side sheet metal 500. One end of the sealing body 101 is provided with a first sealing member, and the other end is provided with a second sealing member, the first sealing member being used for sealing the cabin-side metal plate 600, and the second sealing member being used for sealing the cabin-side metal plate 500.

The first sealing part comprises a first elastic sealing lip edge 102 and a second elastic sealing lip edge 103, the first elastic sealing lip edge 102 and the second elastic sealing lip edge 103 are arranged oppositely, and are overlapped in a certain thickness direction of the cockpit side metal plate 600, when the first sealing part is used, the second elastic sealing lip edge 103 penetrates through a cockpit side metal plate through hole and is arranged between the cockpit side metal plate 600 and the cockpit side metal plate 500, and certainly, the second elastic sealing lip edge 103 can generate elastic deformation when penetrating. That is to say, first elastic sealing lip 102 and second elastic sealing lip 103 can be located the both sides of cockpit side panel beating 600 respectively to press from both sides cockpit side panel beating 600 jointly, and close cockpit side panel beating via hole through the elastic deformation of self, prevent that debris (dust, water etc.) of cockpit side from getting into between cockpit side panel beating 600 and cabin side panel beating 500, and then corrode the automobile body panel beating.

The second sealing part comprises a third elastic sealing lip edge 104 and a fourth elastic sealing lip edge 105, the third elastic sealing lip edge 104 and the fourth elastic sealing lip edge 105 are matched with cabin side sheet metal through holes of a cabin side sheet metal 500 in a sealing mode, the sealing mode is consistent with that of the first elastic sealing lip edge 102 and the second elastic sealing lip edge 103, and the description is omitted here, so that sundries (dust, water and the like) on the cabin side are prevented from entering between the cabin side sheet metal 600 and the cabin side sheet metal 500, and further corroding the vehicle body sheet metal. During assembly, the third elastic sealing lip 104 needs to penetrate through a cockpit sheet metal through hole, and the fourth elastic sealing lip 105 needs to penetrate through a cockpit side sheet metal through hole and a cabin side sheet metal through hole.

The cockpit side metal plate 600 and the cockpit side metal plate 500 can be sealed through elastic deformation of the four elastic sealing lip edges, meanwhile, the sealing performance between the rubber sealing structure 100 and the metal plate is guaranteed without the aid of a stud, a nut and a pressure plate, the whole structure is simpler, the cost is lower, and the installation process is simpler. Compared with a single-layer sealing mode in the prior art, the double-layer sealing structure is adopted in the embodiment, noise can be absorbed, and the NVH sound insulation performance is better.

It should be noted that, in practical use, the planes of the cockpit-side metal plate 600 and the cockpit-side metal plate 500 are not necessarily parallel, and may be arranged at a certain included angle, and at this time, the angle of each elastic sealing lip edge changes correspondingly.

As shown in fig. 1, the intermediate shaft sealing member is located inside the sealing main body 101, so that on one hand, the length of the entire sealing structure can be reduced to meet the demand of miniaturization, and on the other hand, the sealing main body 101 can be supported.

As shown in fig. 3 to 6, the intermediate shaft seal member includes an annular frame 200, a seal member 300, and a fixing ring 400. The ring frame 200 is a plastic frame having a hole inside for the steering intermediate shaft 700 to pass through, and the ring frame 200 is supported on the outside of the steering intermediate shaft 700 while being fixedly arranged with respect to the seal main body 101 in the axial direction of the steering intermediate shaft 700. Specifically, the frame support protrusion 205 is arranged on the inner side of the annular frame 200 in a protruding manner, so that the friction force between the annular frame 200 and the steering intermediate shaft 700 can be reduced, and the annular frame 200 can be prevented from rotating along with the rotation. Two framework outer stop ring platforms 201 are arranged outside the annular framework 200, and the two framework outer stop ring platforms 201 are arranged oppositely and are positioned at two ends of the annular framework 200. Correspondingly, as shown in fig. 7, two sealing body inner stop ring blocks 107 are disposed on the wall of the through hole of the sealing body 101, and the two sealing body inner stop ring blocks 107 are disposed opposite to each other. During assembly, the annular frame 200 is inserted from one end of the sealing body 101, and the inner and outer frame stopper ring blocks 107 and 201 are stopped from each other, thereby positioning the annular frame 200 in the sealing body 101. In order to facilitate installation, a chamfer 204 is formed at one end of the annular frame 200, and a guide inclined surface is also formed at the inner side of one end of the sealing body 101.

In order to enhance the fit between the annular frame 200 and the sealing body 101 and prevent the annular frame 200 from coming off, an anti-slip protrusion 206 is integrally formed outside the annular frame 200, and the anti-slip protrusion 206 is wedged into the sealing body 101.

As shown in fig. 4, two ends of the annular frame 200 are respectively provided with frame inner stop ring blocks 202, and the two frame inner stop ring blocks 202 are arranged back to back. The inner sides of the two ends of the ring frame 200 are respectively provided with a ring groove 203, the sealing element 300 is installed inside the ring frame 200 and is pressed on the frame inner stop ring platform 202 by the fixing ring 400, the outer part of the fixing ring 400 is protruded with a ring platform 401, and the ring platform 401 is matched with the ring groove 203 so as to fix the fixing ring 400, that is, the fixing ring 400 is installed in the ring frame 200.

As shown in fig. 5, each of the sealing members 300 has two sealing lips 301, and the sealing effect can be improved by the sealing members 300 having four sealing lips 301. When in use, lubricating grease is coated on the sealing lip edge 301, so that the steering intermediate shaft has no abnormal sound. The inner side of the fixing ring 400 is protrusively provided with a fixing ring support protrusion 402 capable of being supported on the steering intermediate shaft 700, and the protrusive arrangement of the fixing ring support protrusion 402 also enables to reduce friction.

In this embodiment, the whole size of the one end that cockpit side panel beating corresponds is greater than the one end that cabin side panel beating corresponds among the whole seal structure. During assembly, after the middle shaft sealing component is arranged in the rubber sealing structure 100, the small end of the whole sealing structure extends into a vehicle body metal plate from the cab side, the large end is pressed by hands to enable the second elastic sealing lip edge 103 to be pressed into the cab side metal plate 600, after the vehicle chassis is closed, the fourth elastic sealing lip edge 105 corresponding to the small end is pulled out from the lower surface of the vehicle, and assembly is completed. In particular, to facilitate pulling out the small end, the seal body 101 includes a pull tab 106 at the small end, where the pull tab 106 is actually an extra added length to facilitate pulling.

When designing, an analysis chart shown in fig. 8 is obtained by performing a comparison test on the double-layer sealing structure of the present embodiment, the single-layer sealing structure and the non-sealing structure in the prior art, wherein the abscissa is the frequency, the ordinate is the dB value of the cockpit, in the three curves, the uppermost one is the coupling chart of the frequency and the dB value when the sealing structure is not provided, the middle one is the coupling chart of the frequency and the dB value when the sealing structure is provided in the prior art, and the lowermost one is the coupling chart of the frequency and the dB value when the sealing structure is provided in the present embodiment.

In this embodiment, there are two sealing members, the two sealing members are respectively located at two ends of the annular framework, and each sealing member includes two sealing lips. In other embodiments, the number of sealing lips in a single seal may be increased or decreased depending on the desired sealing effect. In other embodiments, the number of the sealing elements can be increased or decreased according to actual needs. Even if there are more than two seals, the position of the seals can be changed as desired, for example all in the middle position.

In this embodiment, the inner peripheral surface of the fixing ring has a fixing ring support protrusion. In other embodiments, the inner circumferential surface of the fixing ring is a flat arc surface, and at this time, grease can be added between the arc surface and the steering intermediate shaft to reduce friction.

In this embodiment, the inner side surface of the annular framework is provided with a ring groove, and the outer peripheral surface of the fixing ring is provided with a ring platform. In other embodiments, the positions of the ring grooves and the lands may be interchanged. In other embodiments, the fixing ring can be fixed on the annular framework in a threaded connection mode.

In this embodiment, the annular frame has a frame inner stop ring platform, and the fixing ring compresses the sealing member against the frame inner stop ring platform. In other embodiments, the fixing ring is omitted, and the sealing element is fixed on the annular framework in an adhesive mode. In other embodiments, the annular frame is omitted, and the sealing element is directly fixed to the sealing body, wherein the sealing element serves both to seal the steering intermediate shaft and to support the sealing body.

In this embodiment, the annular frame has the anticreep arch outwards, has the frame to support the arch inwards. In other embodiments, only one may be retained, or in other embodiments, both may be eliminated.

In this embodiment, the annular frame is positioned by blocking each other. In other embodiments, the fixing may be performed by gluing or integrally vulcanizing.

In this embodiment, the seal body has a mid-shaft seal member therein. In other embodiments, the mid-shaft seal member is moved outside of the seal body, e.g., the seal body has two ends that extend a certain length, and the mid-shaft seal member is installed in the extended position.

In this embodiment, the first and second resilient sealing lips form a first sealing member and the third and fourth resilient sealing lips form a second sealing member. In other embodiments, only one of the first and second sealing members is pressed together by the resilient sealing lips on both sides. And the other one is fixed by adopting a mode of increasing a flange, specifically, the first sealing part comprises a sealing flanging and a press-fitting flange, and the press-fitting flange is fixed on the metal plate. In other embodiments, both sealing members are flange-mounted.

The embodiment of the utility model provides a still provide a vehicle, including driving side panel beating and cabin side panel beating, still including turning to jackshaft and automobile body and turning to the seal structure of jackshaft via hole, wherein seal structure is unanimous with the aforesaid, no longer gives unnecessary details here.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. The sealing structure for the through hole of the steering intermediate shaft of the vehicle body is characterized by comprising a sealing main body penetrating through the vehicle body, wherein the sealing main body is provided with a through hole for the steering intermediate shaft to penetrate through; the one end of sealed main part is equipped with and is used for sealing up the first sealing member of cooperation in order to seal cockpit side panel beating via hole with cockpit side panel beating, and the other end is equipped with and is used for sealing up the second sealing member of cooperation in order to seal cabin side panel beating via hole with cabin side panel beating.

2. The seal structure for a vehicle body steering intermediate shaft through hole according to claim 1, wherein the first seal member comprises a first elastic seal lip and a second elastic seal lip which are respectively arranged at two sides of the cockpit side metal plate, and the first elastic seal lip and the second elastic seal lip are used for cooperatively clamping the cockpit side metal plate.

3. The sealing structure for the via hole of the vehicle body steering intermediate shaft according to claim 1 or 2, wherein the second sealing component comprises a third elastic sealing lip and a fourth elastic sealing lip which are respectively arranged at two sides of the cabin side metal plate and are used for cooperatively clamping the cabin side metal plate.

4. The vehicle body steering intermediate shaft through hole sealing structure according to claim 1 or 2, wherein an intermediate shaft sealing member for sealing engagement with the steering intermediate shaft is provided in the through hole, the intermediate shaft sealing member being located between the first sealing member and the second sealing member;

the intermediate shaft sealing component comprises an annular framework fixed on the sealing main body and a sealing piece arranged on the annular framework, the annular framework is used for supporting the steering intermediate shaft, and the sealing piece is used for being matched with the steering intermediate shaft in a sealing mode.

5. The sealing structure for the vehicle body steering intermediate shaft through hole according to claim 4, wherein the annular frame is provided at both ends thereof with frame outer stop ring tables disposed opposite to each other, the wall of the through hole is provided with a seal body inner stop ring table corresponding to the frame outer stop ring table, and the frame outer stop ring table and the seal body inner stop ring table are in stop fit along the extending direction of the through hole to limit the annular frame.

6. The sealing structure for the via hole of the vehicle body steering intermediate shaft according to claim 5, wherein the annular framework is provided with an anti-falling bulge protruding outwards, and the anti-falling bulge is used for being wedged into the sealing main body and preventing the annular framework from falling out of the sealing main body;

the annular skeleton is provided with the skeleton support arch inwards in the protrusion, the skeleton support arch is used for supporting turn to on the jackshaft.

7. The sealing structure for the via hole of the vehicle body steering intermediate shaft according to claim 4, wherein a frame inner stop ring table is arranged on the inner side of the annular frame, a fixing ring is fixed on the inner side of the annular frame, and the fixing ring presses the sealing element on the frame inner stop ring table;

the medial surface of annular skeleton with be equipped with the annular on one of them in the outer peripheral face of solid fixed ring, be equipped with the ring platform on the other, the ring platform is used for the card to go into in the annular, be used for with annular skeleton with gu fixed ring is together fixed.

8. The vehicle body steering intermediate shaft via hole sealing structure according to claim 7, wherein a fixing ring support protrusion for supporting on the steering intermediate shaft is provided on an inner peripheral surface of the fixing ring.

9. The sealing structure for the via hole of the vehicle body steering intermediate shaft according to claim 4, wherein at least two sealing pieces are sequentially arranged at intervals in the axial direction of the steering intermediate shaft, and the at least two sealing pieces are respectively arranged at two ends of the annular framework;

10. A vehicle comprising a cockpit-side sheet metal, a cabin-side sheet metal, and a steering intermediate shaft, further comprising a seal structure for a through hole of a vehicle body steering intermediate shaft according to any one of claims 1 to 9.