阅读说明：本技术 一种汽车转向中间轴的安装结构 (Mounting structure of automobile steering intermediate shaft ) 是由 李廷 黄荣生 胡建冰 覃琳 钟振军 黄文通 黄汉舟 黄桥 葛跃 唐建 张德军 于 2020-11-23 设计创作，主要内容包括：本发明涉及汽车安装结构技术领域,公开了一种汽车转向中间轴的安装结构,包括转向中间轴、密封件、压紧件和锁紧件,密封件及压紧件上分别设有第一安装孔和第二安装孔,压紧件设置在密封件的后侧,密封件的前侧与车身抵接,密封件上设有第一连接孔,压紧件上设有与第一连接孔对应设置的第二连接孔,锁紧件依次穿过第二连接孔和第一连接孔后与车身紧固相连,密封件的外侧设有至少一圈环绕第一安装孔设置的密封槽,沿密封槽的外周边缘设有第一密封胶,第一连接孔至少部分与密封槽重合设置。采用本发明技术方案的汽车转向中间轴的安装结构,安装方便,且改变现有产品结构中依赖于橡胶防水的结构,密封效果好,可满足更严格的防水要求。(The invention relates to the technical field of automobile mounting structures, and discloses an automobile steering intermediate shaft mounting structure which comprises a steering intermediate shaft, a sealing element, a pressing piece and a locking piece, wherein a first mounting hole and a second mounting hole are respectively formed in the sealing element and the pressing piece, the pressing piece is arranged on the rear side of the sealing element, the front side of the sealing element is abutted against an automobile body, a first connecting hole is formed in the sealing element, a second connecting hole corresponding to the first connecting hole is formed in the pressing piece, the locking piece penetrates through the second connecting hole and the first connecting hole in sequence and then is fixedly connected with the automobile body, at least one circle of sealing groove arranged around the first mounting hole is formed in the outer side of the sealing element, first sealing glue is arranged along the peripheral edge of the sealing groove, and at least part. The mounting structure of the automobile steering intermediate shaft, which adopts the technical scheme of the invention, is convenient to mount, changes the structure depending on rubber water resistance in the existing product structure, has good sealing effect, and can meet stricter water resistance requirements.)

1. The mounting structure of the automobile steering intermediate shaft is characterized by comprising the steering intermediate shaft, a sealing element, a pressing element and a plurality of locking elements, wherein a first mounting hole and a second mounting hole are respectively formed in the sealing element and the pressing element, the steering intermediate shaft penetrates through the first mounting hole and the second mounting hole, the pressing element is arranged on the rear side of the sealing element, the front side of the sealing element is abutted against an automobile body,

the sealing piece is provided with a plurality of first connecting holes for the locking piece to pass through by taking the first mounting hole as a circle center, the pressing piece is provided with a plurality of second connecting holes which are in one-to-one correspondence with the first connecting holes, the locking piece passes through the second connecting holes and the first connecting holes in sequence and then is fastened and connected with the vehicle body,

the outside of sealing member is equipped with at least the round and encircles the seal groove that first mounting hole set up, the seal groove sets up the front side of sealing member follows the neighboring of seal groove is equipped with first sealed glue, first connecting hole at least part with the seal groove coincidence sets up.

2. The mounting structure of an automobile steering intermediate shaft according to claim 1, wherein the sealing member includes a connecting portion and a sleeve portion disposed in a middle of the connecting portion and extending toward a front end of the connecting portion, the first mounting hole penetrates through the sleeve portion and the connecting portion, at least two cavity-avoiding cavities are disposed at an interval inside the sleeve portion, and the two cavity-avoiding cavities are disposed around an inner wall of the first mounting hole.

3. The mounting structure for an automotive steering intermediate shaft according to claim 2, wherein the side of the connecting portion, which is in contact with the vehicle body, is provided with at least one set of correspondingly disposed stopper protrusions and/or stopper grooves, respectively.

4. The mounting structure for an automotive steering intermediate shaft according to claim 2, wherein the seal groove comprises two side walls provided on the connecting portion, a trapezoidal fitting groove is defined between the two side walls, and the fitting groove gradually increases in a direction away from the seal device.

5. The mounting structure for an automobile steering intermediate shaft according to claim 4, wherein the height of the first sealant is 1 to 3mm higher than the side wall.

6. The mounting structure of an automobile steering intermediate shaft according to any one of claims 1 to 5, wherein the top of the first sealant is covered with a first release paper.

7. The mounting structure for an automobile steering intermediate shaft according to claim 1, wherein the number of the first connecting holes is three, the three first connecting holes are uniformly distributed on the sealing member around the first mounting hole, and a second sealant is provided around the periphery of each first mounting hole.

8. The mounting structure of an automobile steering intermediate shaft according to claim 7, wherein the second sealant is in communication with the first sealant.

9. The mounting structure of an automobile steering intermediate shaft according to claim 7, wherein a second release paper is provided on the second sealant.

10. The mounting structure for an automobile steering intermediate shaft according to claim 2, wherein the side of the connecting portion that abuts against the pressing member is provided with at least one positioning column for positioning in cooperation with the pressing member.

Technical Field

The invention relates to the technical field of automobile mounting structures, in particular to a mounting structure of an automobile steering intermediate shaft.

Background

The steering intermediate shaft is an important transmission part of an automobile steering system, is an important safety guarantee part on an automobile, is used for a steering column and a steering engine, transmits the steering control action of a driver to a steering actuating mechanism, and mainly plays a role in transmitting movement. The arrangement of the transmission shaft can cross over a cockpit and an engine compartment, and the working environment is complex, so that the transmission shaft is required to have higher reliability so as to adapt to the use requirements under different working conditions and ensure the normal running of the vehicle.

At present, the steering intermediate shaft of more motorcycle types in the market adopts the integrated configuration of metal baffle and rubber for keep apart engine compartment and cockpit, play sealed effect, hug closely the automobile body panel beating with the bolt. And leave a hole in the centre for turning to the jackshaft and pass and rotate, because there is the gap in bolt hole department, and the bolt fastening easily appears the problem that the pine takes off, water can be followed the gap in bolt hole, and the clearance seepage of automobile body panel beating and rubber causes the leakproofness of turning to the jackshaft relatively poor from this, the problem that leaks appears easily, can't satisfy the experimental requirement of wading.

Disclosure of Invention

The purpose of the invention is: the utility model provides a mounting structure of auto steering jackshaft, this mounting structure of auto steering jackshaft's simple structure, simple to operate, and change and rely on the waterproof structure of rubber in the current product structure, it is sealed effectual, can satisfy more strict waterproof requirement.

In order to achieve the above object, the present invention provides an installation structure of an automobile steering intermediate shaft, comprising a steering intermediate shaft, a sealing member, a pressing member and a plurality of locking members, wherein the sealing member and the pressing member are respectively provided with a first installation hole and a second installation hole, the steering intermediate shaft passes through the first installation hole and the second installation hole, the pressing member is arranged at the rear side of the sealing member, the front side of the sealing member abuts against an automobile body, the sealing member is provided with a plurality of first connection holes for the locking members to pass through by taking the first installation hole as a circle center, the pressing member is provided with a plurality of second connection holes corresponding to the first connection holes one by one, the locking member passes through the second connection holes and the first connection holes in sequence and then is fastened and connected with the automobile body, the outer side of the sealing member is provided with at least one circle of sealing groove arranged around the first installation hole, the sealing groove is arranged on the front side of the sealing element, first sealing glue is arranged on the peripheral edge of the sealing groove, and at least part of the first connecting hole is overlapped with the sealing groove.

As a preferred scheme, the sealing element comprises a connecting portion and a sleeve-joint portion arranged in the middle of the connecting portion and extending towards the front end of the connecting portion, the first mounting hole penetrates through the sleeve-joint portion and the connecting portion, at least two cavity-avoiding cavities are arranged on the inner side of the sleeve-joint portion at intervals, and the cavity-avoiding cavities surround the inner wall of the first mounting hole.

Preferably, at least one group of limiting protrusions and/or limiting grooves which are correspondingly arranged are arranged on one side, which is attached to the vehicle body, of the connecting part respectively.

Preferably, the sealing groove includes two sidewalls disposed on the connecting portion, a trapezoidal fitting groove is defined between the two sidewalls, and the fitting groove gradually increases in a direction away from the sealing device.

Preferably, the height of the first sealant is 1-3 mm higher than that of the side wall.

Preferably, the top of the first sealant is covered with a first release paper.

Preferably, the number of the first connecting holes is three, the three first connecting holes are uniformly distributed on the sealing element by taking the first mounting hole as a circle center, and a second sealant is arranged on the periphery of each first mounting hole.

Preferably, the second sealant is communicated with the first sealant.

Preferably, the second sealant is provided with second release paper.

Preferably, at least one positioning column used for being matched and positioned with the pressing piece is arranged on one side, attached to the pressing piece, of the connecting portion.

Compared with the prior art, the mounting structure of the automobile steering intermediate shaft has the beneficial effects that:

the mounting structure of the automobile steering intermediate shaft, provided by the embodiment of the invention, is convenient for mounting the steering intermediate shaft by arranging the sealing element and the pressing element which are provided with the corresponding first mounting hole and the second mounting hole, and further is convenient for mounting the sealing device on the automobile body through the locking element by arranging the first connecting hole and the second connecting hole which are matched with each other, and the sealing groove is arranged on one side of the sealing element, which is attached to the automobile body, when the pressing element is pressed on the sealing element, the sealing element is compressed, air in the sealing groove can be discharged, so that a vacuum state is formed, the sealing element and the pressing element can be conveniently attached, so that the sealing element and the pressing element can be closely attached, water is prevented from entering, and meanwhile, the first sealant is arranged on the outer side of the sealing groove, so that when the pressing element presses the sealing element on the automobile body, the clearance between sealing member and the automobile body all is filled and form first filling region by the butyl rubber of similar silicone grease, first sealed glue with sealing member and automobile body paste together to further ensure that the sealing member is inseparable with the laminating of pressing the automobile body, avoid the emergence of the phenomenon of leaking, water-proof effects obviously promotes after the assembly is accomplished, in addition, some defects of pressing the piece in process of production probably lead to the laminating department unevenness of sealing member and automobile body, after tightening the bolt, the stress distribution inhomogeneous phenomenon that the existence of pressing the piece received. The first filling area becomes a buffer area of uneven stress, so that the extrusion deformation possibly existing after assembly is relieved to a certain extent, and the reliability of the sealing device is improved.

Drawings

FIG. 1 is a cross-sectional view of a seal arrangement for a steering countershaft according to an embodiment of the present invention;

FIG. 2 is a view in the direction of G of FIG. 1 with the hold down removed;

FIG. 3 is an enlarged view of a portion of FIG. 1 at A;

FIG. 4 is an enlarged view of a portion of FIG. 1 at B;

FIG. 5 is a partial cross-sectional view of FIG. 2 at the seal ring;

in the figure, 1, a sealing element, 11, a socket joint portion, 11a, a clearance cavity, 11b, a first mounting hole, 12, a connecting portion, 121, a limiting groove, 122, a sealing groove, 123, a first connecting hole, 123a, a sealing ring, 124, a positioning column, 2, a steering intermediate shaft, 3, a first sealant, 4, a second sealant, 5, a pressing piece, 51, a second mounting hole, 6, first anti-sticking paper, 7 and second anti-sticking paper.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. It should be apparent that the described embodiments are only a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are used only to distinguish one type of information from another. For example, a "first" information may also be referred to as a "second" information, and similarly, a "second" information may also be referred to as a "first" information without departing from the scope of the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be connected internally or indirectly through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. The invention will be further explained and explained with reference to the drawings and the embodiments in the description. The step numbers in the embodiments of the present invention are provided only for convenience of illustration, the order between the steps is not limited at all, and the execution order of each step in the embodiments can be adaptively adjusted according to the understanding of those skilled in the art.

It should be noted that, in the embodiment of the present invention, for convenience of description, a side close to the engine compartment of the vehicle body is defined as a front end, and a side close to the cab is defined as a rear end.

As shown in fig. 1 to 5, an installation structure of a steering intermediate shaft of an automobile according to a preferred embodiment of the present invention includes a steering intermediate shaft 2, a sealing member 1, a pressing member 5 and a plurality of locking members, wherein the sealing member 1 and the pressing member 5 are respectively provided with a first installation hole 11b and a second installation hole 51 for the steering intermediate shaft 2 to pass through, the steering intermediate shaft 2 passes through the first installation hole 11b and the second installation hole 51, the pressing member 5 is disposed at a rear side of the sealing member 1, a front side of the sealing member 1 abuts against a vehicle body, so as to facilitate pressing and positioning of the sealing member, the sealing member 1 is provided with a plurality of first connection holes 123 for the locking members to pass through around the first installation hole 11b, the pressing member 5 is provided with a plurality of second connection holes corresponding to the first connection holes 123 one by one, and the locking members sequentially pass through the second connection holes and the first connection holes 123 and then are fastened to the vehicle, the outside of one side that sealing member 1 and automobile body laminated mutually is equipped with the seal groove 122 that at least a circle set up around first mounting hole 11b, and seal groove 122 sets up in the front side of sealing member 1, is equipped with sealed glue 3 along the peripheral edge of seal groove 122, and first connecting hole 123 is at least partly overlapped with seal groove 122 and is set up. In this embodiment, the first sealant 3 is butyl rubber, and the material of the sealing member 1 is POM (polyoxymethylene), which is a polyoxymethylene resin for short and is a thermoplastic crystalline polymer. The Rockwell hardness of the POM is 80, and the sealing element 1 made of the POM material can improve the bonding capability of the sealing element and a vehicle body, so that the waterproof effect is improved, and the requirement of a wading test is met. Wherein, the material that compresses tightly piece 5 is the metal, and the retaining member is the bolt.

Based on the above technical solution, by providing the sealing member 1 and the pressing member 5, the sealing member 1 and the pressing member 5 are provided with the corresponding first mounting hole 11b and the second mounting hole, so as to facilitate the installation of the steering intermediate shaft 2, further, by providing the first connecting hole 123 and the second connecting hole which are adapted to each other, so as to facilitate the installation of the sealing device on the vehicle body through the locking member, and the sealing groove 122 is provided on the side where the sealing member 1 is attached to the vehicle body, when the pressing member 5 is pressed against the sealing member 1, the sealing member 1 is compressed, air in the sealing groove 122 will be discharged, so as to form a vacuum state, so as to facilitate the sealing member 1 and the pressing member 5 to be tightly attached, so as to enable the sealing member 1 and the pressing member 5 to be tightly attached, so as to prevent water from entering, meanwhile, the outside of the sealing groove 122 is provided with the first sealant 3, so as, the clearance between sealing member 1 and the automobile body all is filled and forms first filling region by the butyl rubber of similar silicone grease, first sealed glue 3 paste sealing member 1 and automobile body together, thereby further ensure that sealing member 1 is inseparable with the laminating of pressing the automobile body, avoid the emergence of water leakage phenomenon, water-proof effects obviously promotes after the assembly is accomplished, in addition, some defects of pressing member 5 in process of production probably lead to the laminating department unevenness of sealing member 1 and automobile body, after tightening the bolt, the stress distribution inhomogeneous phenomenon that the existence of pressing member 5 received. The first filling area becomes a buffer area of uneven stress, so that the extrusion deformation possibly existing after the assembly is relieved to a certain extent, and the reliability of the sealing device is improved.

Referring to fig. 1, in some embodiments of the present application, the sealing member 1 includes a connecting portion 12 and a sleeve portion 11 disposed in a middle of the connecting portion 12 and extending toward a front end of the connecting portion 12, in some embodiments of the present application, the connecting portion 12 and the sleeve portion 11 are integrally formed, so that strength of the sealing member 1 can be improved, and production and manufacturing of the sealing member 1 are facilitated, the first mounting hole 11b penetrates through the sleeve portion 11 and the connecting portion 12, at least two cavity avoidance portions 11a are disposed at an interval inside the sleeve portion 11, the two cavity avoidance portions 11a are disposed around an inner wall of the first mounting hole 11b, friction between the sleeve portion 11 and the steering intermediate shaft 2 can be reduced by disposing the cavity avoidance portions 11a, so that the steering intermediate shaft 2 can be ensured to run smoothly during rotation, further, a connecting surface abutting against the steering intermediate shaft 2 is defined in a middle of adjacent cavity avoidance portions 11a, thereby further avoid steam to get into engine compartment one side from cockpit one side to improve the waterproof performance who turns to jackshaft 2, satisfy the experimental requirement of wading of turning to jackshaft 2.

Referring to fig. 1, in some embodiments of the present application, at least one set of limiting protrusions and/or limiting grooves 121 are respectively disposed on the side where the connecting portion 12 and the vehicle body are attached to each other, by arranging the matched limit protrusion and/or limit groove 121, the positioning and the installation of the sealing element 1 and the pressing element 5 are facilitated, in this embodiment, the stopper groove 121 is provided on the coupling portion 12, and the stopper projection (not shown) is provided on the vehicle body, thereby facilitating the positioning and mounting of the sealing device, in some embodiments of the present application, the side wall of the limiting groove 121 is inclined, the inner diameter of the limiting groove 121 gradually increases in a direction away from the connecting portion 12, therefore, the limiting protrusion can conveniently enter the limiting groove, the contact area of the limiting groove 121 and the limiting protrusion can be increased, and the sealing device is reliably connected with the vehicle body.

Referring to fig. 4, in some embodiments of the present application, the sealing groove 122 includes two sidewalls disposed on the connecting portion 12, a trapezoidal fitting groove is defined between the two sidewalls, the fitting groove gradually increases in a direction away from the sealing device, and by providing the trapezoidal fitting groove, when the sealing element 1 is mounted on the vehicle body, and when the pressing element 5 presses the sealing element 1 against the vehicle body, the trapezoidal fitting groove is compressed, so as to increase a contact area between the sealing element 1 and the vehicle body, so that a vacuum state is approached in the sealing groove 122, and a sealing effect is further improved.

Referring to fig. 4, in some embodiments of the present application, the height of the first sealant 3 is 1-3 mm higher than the sidewall, when the pressing piece 5 presses the sealing element 1 on the vehicle body, the first sealing glue 3 is pressed to be flat along with the reduction of the distance between the sealing element 1 and the vehicle body, so that the first sealant 3 extends between the sealing member 1 and the vehicle body, and the first sealant 3 forms a first filling region outside the sealing groove 122, thereby functioning to fix the sealing device to the vehicle body, in some embodiments of the present application, the height difference between the height of the first sealant 3 and the sidewall of the sealing groove 122 is H1, H1 is 2mm, therefore, the first sealant 3 can extend when the sealing element 1 is in contact with the vehicle body, the first sealant 3 is prevented from extending into the sealing groove 122 when the first sealant is too high in height during transportation, and the waterproof effect of the sealing device is further ensured.

Referring to fig. 4, in some embodiments of the present application, the first sealant 3 is covered with a first release paper 6 on the top, and the first release paper 6 ensures that the butyl rubber will not spread before assembly and will not stick to dust or other foreign matters due to the viscosity of the butyl rubber itself.

Referring to fig. 2 and 5, in some embodiments of the present disclosure, the number of the first connection holes 123 is three, the three first connection holes 123 are uniformly distributed on the sealing member around the first mounting hole 11b, and the periphery of each first mounting hole 11b is provided with the second sealant 4, in some embodiments of the present disclosure, one side of the first connection hole 123 close to the vehicle body is provided with a sealing ring 123a, the second sealant 4 is disposed outside the sealing ring 123a, and when the sealing member 1 is tightly attached to the vehicle body, the second sealant 4 can form a second filling area on the periphery of the bolt by disposing the second sealant 4, so that water is prevented from entering the engine compartment from a gap near the bolt, and the sealing performance of the sealing device is further improved. Referring to fig. 5, in some embodiments of the present application, the cross section of the sealing ring 123a is triangular, so that a contact area between the sealing member 1 and the vehicle body can be formed in a state where the sealing member 1 and the vehicle body are tightly attached, a vacuum region is formed inside the sealing ring 123a, so that a better waterproof effect is achieved, and further, a waterproof performance of the sealing device is ensured, when the pressing member 5 presses the sealing member 1 against the vehicle body, as a distance between the sealing member 1 and the vehicle body decreases, the second sealant 4 is pressed and flattened, so that the second sealant 4 extends between the sealing member 1 and the vehicle body, the second sealant 4 forms a second filling region outside the sealing ring 123a, so that the sealing device is fixed on the vehicle body, in some embodiments of the present application, a height difference between a height of the second sealant 4 and a height of the sealing ring 123a is H2, h2 is 2mm, so that the second sealant 4 can extend when the sealing member 1 is in contact with the vehicle body, and the second sealant 4 is prevented from extending into the sealing ring 123a when the height is too high, and the waterproof effect of the sealing device is further ensured.

Referring to fig. 2, in some embodiments of the present application, the second sealant 4 is in communication with the first sealant 3, so that when the sealing member 1 is tightly attached to the vehicle body, a first filling area and a second filling area formed by the first sealant 3 and the second sealant 4 can form a complete and closed pasting area, thereby further ensuring reliable sealing of the sealing device.

In some embodiments of the application, be equipped with second release paper 7 on the sealed 4 of glue of second, second release paper 7 guarantees that butyl rubber can not spread before the assembly, can not glue foreign matter such as dust because of the viscidity of butyl rubber self.

Referring to fig. 1, in some embodiments of the present application, at least one positioning post 124 for positioning in cooperation with the pressing member 5 is disposed on a side of the connecting portion 12, which is attached to the pressing member 5, and a positioning hole adapted to the positioning post 124 is disposed on the pressing member 5, so that the positioning and installation of the pressing member 5 and the sealing member 1 are facilitated by the positioning post 124 and the positioning hole.

In this embodiment, first anti-sticking paper 6 and second anti-sticking paper 7 are from type paper, guarantee from type paper that butyl rubber can not spread before the assembly, can not glue foreign matter such as dust because the viscidity of butyl rubber self.

The working process of the invention is as follows: the periphery of the sealing groove 122 is provided with a circle of butyl rubber with the height being 2mm higher than that of the sealing groove 122, the periphery of the first mounting hole 11b is provided with a circle of butyl rubber with the height being 2mm higher than that of the sealing ring 123a, the butyl rubber is covered with release paper, the release paper cannot fall off before loading, the release paper is uncovered during assembly, and the sealing device belongs to a state capable of deforming and diffusing and has certain viscosity due to the fact that the physical properties of the butyl rubber are similar to silicone grease, and the sealing device is installed on a vehicle body, so that the butyl rubber can be extruded when the sealing device is installed on the vehicle body, gaps between the sealing element 1 and the vehicle body are filled, and the sealing element 1 is fixed on the vehicle body through.

To sum up, the embodiment of the present invention provides an installation structure of an automobile steering intermediate shaft, which is provided with a sealing member 1 and a pressing member 5, wherein the sealing member 1 and the pressing member 5 are provided with a first installation hole 11b and a second installation hole corresponding to each other, so as to facilitate installation of a steering intermediate shaft 2, further, by providing a first connection hole 123 and a second connection hole adapted to each other, so as to facilitate installation of a sealing device on a vehicle body through a locking member, and a sealing groove 122 is provided on a side of the sealing member 1, which is attached to the vehicle body, such that when the pressing member 5 presses the sealing member 1, the sealing member 1 is compressed, air in the sealing groove 122 is discharged, so as to form a vacuum state, so as to facilitate close attachment of the sealing member 1 and the pressing member 5, thereby enabling the sealing member 1 and the pressing member 5 to be closely attached, so as to prevent water from entering, simultaneously, the seal groove 122 outside is equipped with first sealed glue 3, thereby when packing piece 5 compresses tightly sealing member 1 on the automobile body, the clearance between sealing member 1 and the automobile body is all filled and forms first filling area by the butyl rubber of similar silicone grease, first sealed glue 3 pastes sealing member 1 and automobile body together, thereby further ensure that sealing member 1 is inseparable with the laminating of pressing the automobile body, avoid the emergence of water leakage phenomenon, waterproof effect obviously promotes after the assembly is accomplished, in addition, some defects of pressing piece 5 in process of production probably lead to the laminating department unevenness of sealing member 1 and automobile body, behind the tight bolt, pressing piece 5 has the inhomogeneous phenomenon of stress distribution who receives. The first filling area becomes a buffer area of uneven stress, so that the extrusion deformation possibly existing after the assembly is relieved to a certain extent, and the reliability of the sealing device is improved.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", "X-axis direction", "Y-axis direction", "Z-axis direction", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Moreover, some of the above terms may be used to indicate other meanings besides orientation or positional relationship, for example, the term "on" may also be used to indicate some dependency or relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.