CN108836132B - Weather strip, sealing structure having the same, and cooking utensils - Google Patents

Abstract

The invention discloses a sealing strip, a sealing structure with the sealing strip and a cooking utensil, wherein the sealing structure comprises: the mounting carrier is provided with a positioning hole; the sealing strip is provided with a positioning bulge integrally formed with the sealing strip, and the positioning bulge is matched with the positioning hole to install the sealing strip on the installation carrier. The sealing structure provided by the embodiment of the invention has the advantages of good structural strength, difficulty in damage, convenience in assembly and the like.

Description

Weather strip, sealing structure having the same, and cooking utensils

technical field

The present invention relates to the technical field of kitchen appliances, in particular, to a sealing strip, a sealing structure having the same, and a cooking utensil.

Background technique

Free-standing ovens are generally composed of control box components, stove plate components, cavity components, and furnace doors. In order to prevent water droplets from the cooktop from flowing into the oven from the gap between the control box and the cooktop, the gap between the control box and the cooktop is usually provided with a sealing structure. Poor, easy to damage and other defects.

SUMMARY OF THE INVENTION

The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a sealing structure, which has the advantages of good structural strength, less damage, and convenient assembly.

The present invention also provides a cooking utensil and a sealing strip with the above sealing structure.

The sealing structure according to the embodiment of the present invention includes: an installation carrier, which is provided with a positioning hole; a sealing strip, which is provided with a positioning protrusion integrally formed therewith, and the positioning protrusion is matched with the positioning hole to install the sealing strip on the mounting carrier.

The sealing structure according to the embodiment of the present invention has the advantages of good structural strength, less damage, and convenient assembly.

In addition, the sealing structure according to the above embodiments of the present invention may also have the following additional technical features:

According to some embodiments of the present invention, the positioning protrusion and the sealing strip are integral elastic parts.

According to some embodiments of the present invention, the positioning protrusion is provided with a locking groove extending along the circumferential direction thereof, and the edge of the positioning hole is locked into the locking groove through elastic deformation of the positioning protrusion.

According to some embodiments of the present invention, the positioning protrusion includes: a connecting part, the connecting part is connected to the sealing strip; a conical part, the conical part is connected to the connecting part and the conical part The cross-sectional area of the connector gradually decreases toward the direction away from the connecting portion; wherein, the maximum cross-sectional area of the tapered portion is greater than the cross-sectional area of the connecting portion, and the slot is formed by the tapered portion, the The connecting portion and the sealing strip are jointly defined.

According to some embodiments of the present invention, the positioning protrusion further comprises: an extension part, the extension part is connected to an end of the tapered part away from the connection part, and the cross-sectional area of the extension part is equal to the Minimum cross-sectional area of the taper.

According to some embodiments of the present invention, an end of the extension portion away from the tapered portion is configured in a spherical cap shape.

According to some embodiments of the present invention, the mounting carrier has a flange, the positioning hole is provided on the flange and penetrates the flange along a thickness direction of the flange, and the flange is configured to A portion of the edge of the positioning hole is snapped into the snap slot.

According to some embodiments of the present invention, the flange is a right-angle flange.

According to some embodiments of the present invention, the width of the card slot is less than or equal to the thickness of the flange.

According to some embodiments of the present invention, the sealing strip includes: an installation part, the positioning protrusion is provided on one side of the installation part; a sealing part, the sealing part is connected with the installation part and with the installation part The parts are vertically arranged; wherein, in the width direction of the sealing part, the thickness of the sealing part gradually increases from the two sides to the center.

According to some embodiments of the present invention, the mounting portion is located at the center of the sealing portion in the width direction of the sealing portion, and the connection between the mounting portion and the sealing portion is arc-transitioned.

According to some embodiments of the present invention, a cross section of a surface of the sealing portion facing away from the mounting portion is circular arc shape.

According to some embodiments of the present invention, a plurality of the positioning protrusions are arranged at intervals along a length direction of the sealing strip, a plurality of the positioning holes are provided, and a plurality of the positioning protrusions are matched with the plurality of positioning protrusions in a one-to-one correspondence. the positioning holes.

According to some embodiments of the present invention, the sealing strip and the positioning protrusion are a single piece of silicone.

A cooking appliance according to an embodiment of the second aspect of the present invention includes the sealing structure according to the embodiment of the first aspect of the present invention.

According to some embodiments of the present invention, the cooking appliance is an oven and includes: a control box assembly, the control box assembly constituting the mounting carrier; a cooktop plate, the sealing strip sealing the control box assembly and the cooktop Gap between platens.

According to the sealing strip provided by the embodiment of the third aspect of the present invention, the sealing strip is provided with a plurality of positioning protrusions formed integrally therewith and arranged at intervals along the longitudinal direction thereof, and the plurality of positioning protrusions are integrated with the sealing strip. An elastic piece, each of the positioning protrusions includes: a connecting part, the connecting part is connected to the sealing strip; a conical part, the conical part is connected to the connecting part and the cross section of the conical part is The area gradually decreases away from the connecting portion; wherein the largest cross-sectional area of the tapered portion is greater than the cross-sectional area of the connecting portion, the tapered portion, the connecting portion and the seal The bars together define a snap slot, the positioning protrusion is adapted to pass through the positioning hole of the mounting carrier, and the edge of the positioning hole is snapped into the snap slot through elastic deformation of the positioning protrusion.

Additional aspects and advantages of the present invention will be set forth, in part, from the following description, and in part will be apparent from the following description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

1 is a schematic structural diagram of a sealing structure according to an embodiment of the present invention;

Fig. 2 is the partial enlarged schematic diagram of A place in Fig. 1;

3 is a schematic structural diagram of a sealing strip according to an embodiment of the present invention;

Fig. 4 is the partial enlarged schematic diagram of B place in Fig. 3;

5 is a schematic structural diagram of a sealing structure according to an embodiment of the present invention;

Fig. 6 is the partial enlarged schematic diagram of C place in Fig. 5;

7 is a schematic structural diagram of a cooking appliance according to an embodiment of the present invention.

Reference number:

Cooking appliance 1000; sealing structure 100;

sealing strip 10; mounting part 11; sealing part 12;

Positioning protrusion 20; card slot 201; connecting part 21; tapered part 22; extension part 23;

mounting carrier 30; positioning hole 31; flange 32;

Control box assembly 200; cooktop plate 300.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present invention, and should not be construed as a limitation of the present invention.

In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", The orientation or positional relationship indicated by "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation shown in the drawings or The positional relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

The sealing structure 100 according to the embodiment of the first aspect of the present invention will be described below with reference to FIGS. 1-6 .

As shown in FIG. 1 and FIG. 2 , the sealing structure 100 according to the embodiment of the present invention includes: a mounting carrier 30 and a sealing strip 10 . The mounting carrier 30 is provided with a positioning hole 31 , and the sealing strip 10 is provided with a positioning protrusion 20 integrally formed therewith.

Specifically, the sealing structure 100 is used to seal the gap between two adjacent target components, wherein the mounting carrier 30 is constructed from one of the two target components, and the other of the two target components is formed by pressing the sealing strip 10 . The sealing strip 10 is in close contact with the mounting carrier 30 , thereby sealing the gap between the two target components. The positioning protrusions 20 and the sealing strip 10 are integrally formed, that is, the positioning protrusions 20 and the sealing strip 10 are integrally formed, and the positioning protrusions 20 are suitable for matching with the positioning holes 31 on the installation carrier 30 to fix the sealing strip 10 on the installation carrier. 30.

According to the sealing structure 100 of the embodiment of the present invention, the sealing strip 10 and the positioning protrusion 20 are integrally processed and formed. The positioning protrusion 20 and the sealing strip 10 are integrally formed, the structure is simple, the processing is convenient, and the consistency of the overall structure is better, and it is not easy to be damaged. Furthermore, the sealing strip 10 can be installed on the installation carrier by fitting the positioning protrusions 20 into the positioning holes 31. Compared with the related art, the metal inlaid hooks on the sealing strip 10 need to be matched with the installation carrier 30, and the assembly is more convenient. convenient.

Therefore, the sealing structure 100 according to the embodiment of the present invention has the advantages of good structural strength, less damage, and convenient assembly.

In some embodiments of the present invention, the positioning protrusion 20 and the sealing strip 10 are integral elastic pieces. Specifically, the positioning protrusion 20 and the sealing strip 10 are manufactured through an integral processing and molding process, and the overall structure is consistent, and the positioning protrusion 20 and the sealing strip 10 are made of elastic materials. During assembly, under the action of external force The positioning protrusion 20 is elastically deformed and inserted into the positioning hole 31, and the positioning protrusion 20 is closely matched with the positioning hole 31 due to its own elastic effect, thereby further improving the matching effect of the positioning protrusion 20 and the positioning hole 31, and the installation is more convenient; Otherwise, the sealing strip 10 is deformed by the extrusion of the two target parts, and the sealing strip 10 can better fill the gap between the two target parts due to its own elastic effect, preventing water and other debris from entering the gap between the two target parts, Thereby, the effect of waterproof and dustproof is improved.

In some optional examples of the present invention, as shown in FIGS. 3 and 4 , the positioning protrusion 20 is provided with a snap groove 201 extending along its circumferential direction, and the edge of the positioning hole 31 passes through the elastic deformation of the positioning protrusion 20 . into the card slot 201 .

Specifically, the side surface of the positioning protrusion 20 is provided with an inwardly recessed card slot 201 , the card groove 201 extends along the circumferential direction of the positioning protrusion 20 , and the positioning protrusion 20 enters the positioning hole 31 through elastic deformation until the positioning hole The edge of 31 is snapped into the card slot 201 . Preferably, the diameter of the positioning protrusion 20 is not smaller than the diameter of the positioning hole 31. In this way, after the edge of the positioning hole 31 is clamped in the clamping slot 201, the positioning hole 31 and the positioning protrusion 20 are not easily separated, thereby improving the sealing performance between the sealing strip 10 and the installation. The fixing effect of the carrier 30 .

In some specific examples of the present invention, as shown in FIG. 4 , the positioning protrusion 20 includes: a connecting portion 21 and a tapered portion 22 .

The connecting portion 21 is connected to the sealing strip 10 , the conical portion 22 is connected to the connecting portion 21 , and the cross-sectional area of the conical portion 22 gradually decreases toward the direction away from the connecting portion 21 , and the maximum cross-sectional area of the conical portion 22 is greater than The cross-sectional area of the connecting portion 21 , the clamping slot 201 is jointly defined by the tapered portion 22 , the connecting portion 21 and the sealing strip 10 .

Specifically, the tapered portion 22 is generally in the shape of a truncated cone, and the shape of the cross section of the tapered portion 22 passing through its central axis is generally an isosceles trapezoid. During the assembly process, as shown in FIG. 2 , the cross-sectional area of the tapered portion 22 is relatively small. The small end first enters the positioning hole 31, and then the tapered portion 22 continues to enter the positioning hole 31 through elastic deformation until the end with the larger cross-sectional area of the tapered portion 22 passes through the positioning hole 31, as shown in Figure 5 and Figure 6 As shown, at this time, the edge of the positioning hole 31 is clamped in the clamping slot 201 , and the assembly of the sealing strip 10 and the mounting carrier 30 is completed. Therefore, the installation of the sealing strip 10 is more convenient and labor-saving, and the matching effect between the positioning protrusion 20 and the positioning hole 31 is better, and the connection effect between the sealing strip 10 and the installation carrier 30 is further improved.

Further, the maximum cross-sectional area of the tapered portion 22 is larger than the inner diameter of the positioning hole 31 , and the minimum cross-sectional area of the tapered portion 22 is smaller than the inner diameter of the positioning hole 31 . The edge of 31 is clamped in the slot 201 , and the positioning protrusion 20 will not be separated from the positioning hole 31 , thereby further improving the fixing effect of the sealing strip 10 and the mounting carrier 30 .

Optionally, continuing to refer to the embodiment shown in FIG. 4 , the positioning protrusion 20 further includes an extension portion 23 . The extension portion 23 is connected to one end of the tapered portion 22 away from the connection portion 21 , and the cross-sectional area of the extension portion 23 is equal to the minimum cross-sectional area of the tapered portion 22 . Specifically, the extension portion 23 is generally a cylinder, and the extension portion 23 is connected to the end of the tapered portion 22 with a smaller cross-sectional area. The extension portion 23 is suitable for a worker to hold the positioning protrusion 20 in the positioning hole 31 by hand. Thus, the installation of the weather strip 10 is more convenient.

It can be understood that the connecting portion 21 , the tapered portion 22 and the extending portion 23 are integrally formed parts, so that the overall structural strength of the positioning protrusion 20 is better.

According to a further embodiment of the present invention, as shown in FIG. 4 , one end of the extension portion 23 away from the tapered portion 22 is configured in a spherical cap shape. Compared with the structure in which the end of the extension portion 23 away from the tapered portion 22 is configured as a plane, the spherical cap-shaped end face is less prone to external wear due to no edges and corners, thereby prolonging the service life of the positioning protrusion 20 .

In some specific examples of the present invention, as shown in FIG. 1 and FIG. 2 , the mounting carrier 30 has a flange 32 , the positioning holes 31 are provided in the flange 32 and pass through the flange 32 along the thickness direction of the flange 32 , and the flange 32 The portion of the edge of the positioning hole 31 is configured to be snapped into the card slot 201 . Therefore, the processing of the positioning hole 31 is more convenient, and it is convenient in space to pass the positioning protrusion 20 through the positioning hole 31, and the spatial layout is better.

Optionally, the flange 32 is a right-angle flange. In other words, the flange 32 is perpendicular to the plane where the mounting carrier 30 is located, and the flange 32 is parallel to the side surface of the sealing strip 10 . Therefore, after the positioning protrusion 20 is assembled in the positioning hole 31 , the flange 32 is in contact with the sealing strip 10 . The larger the area, the better the sealing effect.

Further, the width of the card slot 201 is less than or equal to the thickness of the flange 32 . The width of the clamping slot 201 is the distance between the end face with the larger cross-sectional area of the tapered portion 22 and the sealing strip 10. In this way, after the flange 32 is clamped in the clamping slot 201, since the thickness of the flange 32 is greater than or equal to the clamping slot The width of 201, the card slot 201 is elastically deformed so that the edge of the positioning hole 31 of the flange 32 is clamped in the card slot 201, that is, the end face of the tapered portion 22 and the side surface of the sealing strip 10 are in close contact with the flange 32 respectively. On the two sides of the connecting portion 21 , the locking groove 201 has a better effect of limiting the position of the flange 32 in the axial direction of the connecting portion 21 , thereby further improving the fixing effect of the sealing strip 10 and the flange 32 .

In some embodiments of the present invention, as shown in FIGS. 3 and 4 , the sealing strip 10 includes a mounting portion 11 and a sealing portion 12 .

The positioning protrusion 20 is provided on one side of the mounting portion 11 , the sealing portion 12 is connected to the mounting portion 11 and is vertically arranged with the mounting portion 11 , in the width direction of the sealing portion 12 , the thickness of the sealing portion 12 is from both sides to the center gradually increases.

It should be noted here that the width direction of the sealing portion 12 is the front-rear direction shown in FIG. 3 , the thickness direction of the sealing portion 12 is the up-down direction in FIG. 3 , the cross-sectional shape of the sealing strip 10 is generally T-shaped, and the sealing The lower end surfaces of the parts 12 are respectively in contact with the upper end surfaces of the two target parts, the installation part 11 is located between the two target parts, and the positioning protrusion 20 is connected to the installation part 11, thereby, the sealing part 12 can prevent water or dust and other sundries from entering The gap between the two target components further improves the sealing effect.

Optionally, continuing to refer to the embodiments shown in FIGS. 3 and 4 , the mounting portion 11 is located at the center of the sealing portion 12 in the width direction of the sealing portion 12 , and the connection between the mounting portion 11 and the sealing portion 12 has a circular arc transition. In other words, the mounting portion 11 is connected to the center of the sealing portion 12 in the front-rear direction of the sealing portion 12 , and the connection between the mounting portion 11 and the sealing portion 12 is configured with an arc, whereby the connection between the mounting portion 11 and the connecting portion 21 can be improved. Due to the structural strength at the location, the sealing strip 10 is not easily damaged.

Further, as shown in FIG. 4 , the cross section of the surface of the sealing portion 12 facing away from the mounting portion 11 is arc-shaped. Specifically, the upper surface of the sealing portion 12 is formed as an arc-shaped surface with a high center and low front and rear sides, thereby further enhancing the structural strength of the sealing strip 10 .

According to some embodiments of the present invention, as shown in FIGS. 1 and 3 , there are multiple positioning protrusions 20 and are arranged at intervals along the length direction of the sealing strip 10 , there are multiple positioning holes 31 , and the multiple positioning protrusions 20 are one by one. Correspondingly fit in the plurality of positioning holes 31 . In this way, the positioning effect of the sealing strip 10 relative to the mounting carrier 30 is better, and the fixing effect of the sealing strip 10 is further improved.

In some embodiments of the present invention, the sealing strip 10 and the positioning protrusion 20 are a single piece of silicone. That is to say, the sealing strip 10 and the positioning protrusion 20 are integral parts made of silicone material. The silicone part has good elasticity, high temperature resistance, stable chemical properties, and low cost, which can reduce the manufacturing cost of the sealing structure 100 .

A cooking appliance 1000 according to an embodiment of the second aspect of the present invention will be described below with reference to FIG. 7 .

As shown in FIG. 7 , a cooking appliance 1000 according to an embodiment of the present invention includes a sealing structure 100 according to an embodiment of the first aspect of the present invention.

The cooking utensil 1000 according to the embodiment of the present invention, by using the sealing structure 100 according to the embodiment of the first aspect of the present invention, has the advantages of high strength of the sealing structure 100, not easy to be damaged, convenient assembly, and good waterproof and dustproof effect.

According to some embodiments of the present invention, with continued reference to the embodiment shown in FIG. 7 , the cooking appliance 1000 is an oven and includes: a control box assembly 200 and a cooktop plate 300 . Specifically, the two target components are the control box assembly 200 and the cooktop plate 300 respectively. The control box assembly 200 constitutes the mounting carrier 30 , and the sealing strip 10 is installed on the control box assembly 200 to seal the space between the control box assembly 200 and the cooktop plate 300 . gap.

The weather strip 10 according to the embodiment of the third aspect of the present invention will be described below with reference to FIGS. 3 and 4 .

As shown in FIG. 3 and FIG. 4 , according to the sealing strip 10 according to the embodiment of the present invention, the sealing strip 10 is provided with a plurality of positioning protrusions 20 integrally formed therewith and arranged at intervals along the longitudinal direction thereof. The plurality of positioning protrusions 20 are connected to the sealing The strip 10 is an integral elastic piece, and each positioning protrusion 20 includes a connecting portion 21 and a tapered portion 22 .

The connecting portion 21 is connected to the sealing strip 10 , the conical portion 22 is connected to the connecting portion 21 , and the cross-sectional area of the conical portion 22 gradually decreases in the direction away from the connecting portion 21 , and the maximum cross-sectional area of the conical portion 22 is Larger than the cross-sectional area of the connecting portion 21 , the tapered portion 22 , the connecting portion 21 and the sealing strip 10 together define a slot 201 , the positioning protrusion 20 is adapted to pass through the positioning hole 31 of the mounting carrier 30 and the edge of the positioning hole 31 passes through The elastic deformation of the positioning protrusion 20 is snapped into the slot 201 .

The sealing strip 10 according to the embodiment of the present invention has the advantages of good structural strength, less damage, and convenient assembly.

The sealing strip 10 according to the embodiment of the present invention, the sealing structure 100 having the same, and other constitutions and operations of the cooking appliance 1000 are known to those of ordinary skill in the art, and will not be described in detail here.

In the description of this specification, description with reference to the terms "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, The scope of the invention is defined by the claims and their equivalents.

Claims (16)

1. A sealing structure, comprising:

the mounting carrier is provided with a positioning hole;

the sealing strip, the sealing strip is equipped with rather than integrated into one piece's location arch, the protruding cooperation of location cooperate in the locating hole in order to with the sealing strip install in the installation carrier, the sealing strip includes: the positioning bulge is arranged on one side of the mounting part; the sealing part is connected with the mounting part and is arranged perpendicular to the mounting part; wherein the thickness of the sealing part is gradually increased from both sides to the center in the width direction of the sealing part.

2. The seal structure of claim 1, wherein the positioning projection and the seal strip are an integral resilient member.

3. The seal structure according to claim 2, wherein the positioning projection is provided with a catching groove extending circumferentially thereof, and an edge of the positioning hole is caught in the catching groove by elastic deformation of the positioning projection.

4. The seal structure of claim 3, wherein the positioning projection comprises:

the connecting part is connected to the sealing strip;

a tapered portion connected to the connection portion and having a cross-sectional area gradually decreasing toward a direction away from the connection portion;

wherein, the maximum cross-sectional area of toper portion is greater than the cross-sectional area of connecting portion, the draw-in groove is injectd by toper portion, connecting portion and sealing strip jointly.

5. The seal structure of claim 4, wherein the locating projection further comprises:

an extension connected to an end of the tapered portion remote from the connection portion, the extension having a cross-sectional area equal to a minimum cross-sectional area of the tapered portion.

6. The seal structure according to claim 5, wherein an end of the extension portion remote from the tapered portion is configured in a spherical crown shape.

7. The seal structure of claim 3, wherein the mounting carrier has a flange, the positioning hole is provided in the flange and penetrates through the flange in a thickness direction of the flange, and a portion of the flange configured as an edge of the positioning hole is engaged with the engaging groove.

8. The seal structure of claim 7, wherein the cuff is a right angle cuff.

9. The sealing structure of claim 7, wherein the width of the slot is less than or equal to the thickness of the flange.

10. The seal structure according to claim 1, wherein the mounting portion is located at a center of the seal portion in a width direction of the seal portion, and a junction of the mounting portion and the seal portion is rounded.

11. The seal structure according to claim 1, characterized in that a cross section of a surface of the seal portion facing away from the mounting portion is circular arc-shaped.

12. The seal structure according to any one of claims 1 to 9, wherein the positioning protrusions are provided in plural and spaced apart from each other in a longitudinal direction of the seal strip, the positioning holes are provided in plural, and the plural positioning protrusions are fitted to the plural positioning holes in a one-to-one correspondence.

13. The sealing structure of any one of claims 1-9, wherein the sealing strip and the locating projection are a one-piece silicone.

14. A cooking appliance comprising a sealing structure according to any one of claims 1-13.

15. The cooking appliance of claim 14, wherein the cooking appliance is an oven and comprises:

a control box assembly constituting the mounting carrier;

and the sealing strip seals a gap between the control box assembly and the hearth plate.

16. The utility model provides a sealing strip, its characterized in that, the sealing strip is equipped with rather than integrated into one piece and along a plurality of location archs that its length direction interval set up, and is a plurality of the location protruding with the sealing strip elastic component as an organic whole, every the location arch includes:

the connecting part is connected to the sealing strip;

a tapered portion connected to the connection portion and having a cross-sectional area that gradually decreases in a direction away from the connection portion;

wherein, the biggest cross-sectional area of toper portion is greater than the cross-sectional area of connecting portion, toper portion connecting portion with the draw-in groove is injectd jointly to the sealing strip, the location arch is suitable for to pass the locating hole of installation carrier just the border of locating hole passes through the bellied elastic deformation card in location is gone into the draw-in groove, the sealing strip includes: the positioning bulge is arranged on one side of the mounting part; the sealing part is connected with the mounting part and is arranged perpendicular to the mounting part; wherein the thickness of the sealing part is gradually increased from both sides to the center in the width direction of the sealing part.

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