Cavity sealing device

Abstract

The utility model relates to the technical field of vehicle cavity sound insulation discloses a cavity sealing device, including support plate, reinforcing plate, outer plate, first sealing element and second sealing element, support plate and reinforcing plate enclose first containing cavity, reinforcing plate and outer plate enclose second containing cavity, first sealing element is used for sealing first containing cavity, and second sealing element is used for sealing second containing cavity, first sealing element includes first sealing layer and baffle, is provided with the step on first sealing layer, through the step and baffle on first sealing element, can set first sealing layer outside additional sol outside the connecting place of corresponding support plate and reinforcing plate of needle ground, through the step increase the sol amount of gap, better coating is on the foaming structure, and through the baffle can limit the flowing direction of sol, better flow into the gap, solved the foaming structure of prior art and the technical problem of bad sealing property that easily damaged, reached the technical effect that the foaming structure was more firm, and the better sealing property.

Description

TECHNICAL FIELD

[0001] The utility model relates to a vehicle cavity sound insulation technical field, in particular to a cavity sealing device. BACKGROUND

[0002] The body cavity sealing expansion rubber block is usually used to fill the through cavity existing in the A, B, C or D column of the vehicle body, and reasonable and appropriate use of the sealing expansion rubber block not only seals tightly, but also has excellent sound absorption performance, which can effectively improve the noise, vibration and harshness (NVH) of the whole vehicle.

[0003] The current body cavity sealing structure usually adopts a metal framework expansion block clamping type structure, and after the foaming expansion of the sealing expansion rubber block, a layer of sol is generally needed to be covered to fix and seal the foaming structure again. However, the A, B, C or D column generally has a horn position, and the horn position has poor flowability, so that it is difficult for the sol to cover the horn position, thereby the foaming structure is easily damaged, and the sealing performance of the A, B, C or D column is poor. SUMMARY

[0004] The utility model discloses a cavity sealing device, solve the technical problem that the foaming structure of prior art is easy to damage and has poor sealing performance.

[0005] In order to solve the above technical problems, the utility model provides a cavity sealing device, which comprises a support plate, a reinforcing plate, an outer plate, a first sealing element and a second sealing element.

[0006] The reinforcing plate is arranged between the support plate and the outer plate, and the reinforcing plate and the support plate form a first accommodating cavity, and the reinforcing plate and the outer plate form a second accommodating cavity. The first sealing element is arranged in the first accommodating cavity, and the second sealing element is arranged in the second accommodating cavity. The first sealing element is connected with the support plate and the reinforcing plate respectively, and is used for sealing the first accommodating cavity. The second sealing element is connected with the outer plate and the reinforcing plate respectively, and is used for sealing the second accommodating cavity.

[0007] The first sealing element comprises a first sealing layer and a baffle. A step is arranged on the first sealing layer. The step is arranged on the first sealing layer, and the baffle is arranged at the connection position of the step away from the support plate and the reinforcing plate.

[0008] In an optional embodiment, a hole is arranged on the first sealing element, and the hole is arranged through along the thickness direction of the first sealing element. The first sealing layer surrounds the hole.

[0009] In an optional embodiment, the first sealing layer is spaced apart from the inner wall of the first accommodating cavity.

[0010] In an optional embodiment, the first sealing member further comprises a first supporting layer, the first supporting layer is arranged on one side of the first sealing layer, and the first supporting layer is connected to the inner wall of the first accommodating cavity.

[0011] In an optional embodiment, the first supporting layer is provided with a first buckle, and the first supporting layer is clamped to the inner wall of the first accommodating cavity through the first buckle.

[0012] In an optional embodiment, the side of the first supporting layer away from the first sealing layer is provided with a first foaming layer and a limiting layer, the first foaming layer is provided with the limiting layer on the side away from the first supporting layer, and the first supporting layer passes through the first foaming layer and is connected to the limiting layer.

[0013] In an optional embodiment, the first supporting layer is provided with a second buckle, the second buckle is arranged perpendicularly to the first supporting layer, and the second buckle passes through the first foaming layer and is clamped to the limiting layer.

[0014] In an optional embodiment, the second sealing member comprises a second sealing layer, a second supporting layer and a second foaming layer.

[0015] The second sealing layer is spaced apart from the inner wall of the second accommodating cavity, the second supporting layer is connected to the second foaming layer and the second sealing layer respectively, and the second sealing layer and the second foaming layer are spaced apart.

[0016] In an optional embodiment, the second supporting layer is provided with a hollow part, the hollow part is arranged between the second foaming layer and the second sealing layer, and a plurality of hollow parts are arranged along the length direction of the second supporting layer.

[0017] In an optional embodiment, the second supporting layer is provided with a groove, the groove is arranged on the side of the hollow part away from the second sealing layer, and the second foaming layer is embedded in the groove.

[0018] This utility model provides a cavity sealing device, including a support plate, a reinforcing plate, an outer plate, a first sealing element, and a second sealing element. The reinforcing plate is disposed between the support plate and the outer plate, forming a first accommodating cavity with the support plate and the outer plate, and forming a second accommodating cavity with the reinforcing plate and the outer plate. The first sealing element is disposed within the first accommodating cavity, and the second sealing element is disposed within the second accommodating cavity. The first sealing element is connected to both the support plate and the reinforcing plate and is used to seal the first accommodating cavity. The second sealing element is connected to both the outer plate and the reinforcing plate and is used to seal the second accommodating cavity. The first sealing element includes a first sealing layer and a baffle. A step is provided on the first sealing layer, and the baffle is located at the connection point between the step and the support plate and the reinforcing plate. The first and second sealing elements can seal the first and second accommodating cavities respectively. The steps and baffles on the first sealing element allow additional sol to be applied to the connection between the corresponding support plate and reinforcing plate, beyond the first sealing layer. The steps increase the amount of sol in the gaps, better covering the foamed structure. The baffles limit the flow direction of the sol, allowing it to flow better into the gaps. This solves the technical problems of easy damage to the foamed structure and poor sealing in the prior art, achieving a more robust foamed structure with better sealing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the cavity sealing device mentioned in the embodiments of this utility model;

[0020] Figure 2 for Figure 1 Top view;

[0021] Figure 3 This is a schematic diagram of the structure of the first sealing element mentioned in the embodiments of this utility model;

[0022] Figure 4 for Figure 3 The main view;

[0023] Figure 5 for Figure 3 Top view;

[0024] Figure 6 This is a schematic diagram of the structure of the second sealing element mentioned in the embodiments of this utility model.

[0025] In the figure, 1-support plate; 2-reinforcing plate; 3-outer plate; 4-first sealing element; 401-first sealing layer; 402-baffle; 403-hole; 404-first support layer; 405-first buckle; 406-first foaming layer; 407-limiting layer; 408-second buckle; 409-step; 5-second sealing element; 501-second sealing layer; 502-second support layer; 503-second foaming layer; 504-cutout part. Detailed Implementation

[0026] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] In related technologies, the vehicle body cavity sealing structure usually adopts a metal skeleton expansion block snap-fit ​​structure. After the sealing expansion block foams and expands, it is generally necessary to cover it with a layer of sol to fix the foam structure and perform secondary sealing. However, the existing A, B, C, and D pillars generally have corner positions, and the flow at the corner positions is poor, making it difficult for the sol to cover the corner positions. This makes the foam structure easy to be damaged, and at the same time, the sealing performance of the A, B, C, and D pillars is not good.

[0029] In view of this, such as Figures 1-6 As shown, some embodiments of this utility model provide a cavity sealing device, including a support plate 1, a reinforcing plate 2, an outer plate 3, a first sealing element 4, and a second sealing element 5. The reinforcing plate 2 is disposed between the support plate 1 and the outer plate 3, forming a first accommodating cavity with the support plate 1, and a second accommodating cavity with the outer plate 3 and the reinforcing plate 2. The first sealing element 4 is disposed in the first accommodating cavity, and the second sealing element 5 is disposed in the second accommodating cavity. The first sealing element 4 is connected to the support plate 1 and the reinforcing plate 2 respectively, and is used to seal the first accommodating cavity. The second sealing element 5 is connected to the outer plate 3 and the reinforcing plate 2 respectively, and is used to seal the second accommodating cavity. The first sealing element 4 includes a first sealing layer 401 and a baffle 402. A step 409 is provided on the first sealing layer 401, and the baffle 402 is disposed at the connection point of the step 409 away from the support plate 1 and the reinforcing plate 2.

[0030] In the above embodiment, the support plate 1, the reinforcing plate 2 and the outer plate 3 can be arranged as the structure of the A, B, C or D pillar of the vehicle, or other body structures that need to be sealed, wherein the support plate 1, the reinforcing plate 2 and the outer plate 3 can all be made of metal material, the support plate 1, the reinforcing plate 2 and the outer plate 3 can be integrally formed by a punching machine, the outer plate 3 is arranged on the outer facade of the vehicle body, the reinforcing plate 2 is arranged between the outer plate 3 and the support plate 1, the support plate 1 is arranged towards the inside of the vehicle, the reinforcing plate 2, the support plate 1 and the outer plate 3 can be connected together by welding, the support plate 1 and the reinforcing plate 2 can enclose a first accommodating cavity, the outer plate 3 and the reinforcing plate 2 can enclose a second accommodating cavity, the first sealing element 4 is fixed in the first accommodating cavity, the second sealing element 5 is fixed in the second accommodating cavity, the first sealing element 4 can be arranged perpendicular to the inner wall of the first accommodating cavity, the second sealing element 5 can be arranged perpendicular to the inner wall of the second accommodating cavity, the first sealing element 4 is used to seal the first accommodating cavity after foaming, and the second sealing element 5 is used to seal the second accommodating cavity after foaming.

[0031] Optionally, a first sealing layer 401 is arranged on the first sealing element 4, the first sealing layer 401 can be made of sol material, the first sealing layer 401 can be arranged on the side of the first sealing element 4 away from the ground, the first sealing layer 401 can melt and flow after being heated, thereby reinforcing and sealing the foaming structure in the first accommodating cavity, wherein two steps 409 can be arranged at the positions of the two horns of the first sealing layer 401 close to the first accommodating cavity, that is, the two horns of the connection between the support plate 1 and the reinforcing plate 2, the two steps 409 make the volume of sol close to the two horns greater than the volume of sol at other positions, so that after the steps 409 and the sealing layer melt, more sol can be distributed at the two horns, better sealing the positions of the two horns, further, a baffle 402 is arranged on the side of each step 409 away from the horn, the baffle 402 can be arranged perpendicular to the first sealing layer 401, the baffle 402 abuts against the step 409, and the baffle 402 is used to limit the flowing direction of the step 409 after melting, thereby avoiding poor flowability at the two horns and incomplete coverage of the sol on the foaming structure.

[0032] The utility model provides a cavity sealing device, including support plate 1, reinforcing plate 2, outer plate 3, first sealing element 4 and second sealing element 5, reinforcing plate 2 sets up between support plate 1 and outer plate 3, reinforcing plate 2 and support plate 1 enclose first accommodating cavity, reinforcing plate 2 and outer plate 3 enclose second accommodating cavity, first sealing element 4 sets up in first accommodating cavity, second sealing element 5 sets up in second accommodating cavity, first sealing element 4 is connected with support plate 1 and reinforcing plate 2 respectively, and first sealing element 4 is used for sealing first accommodating cavity, and second sealing element 5 is connected with outer plate 3 and reinforcing plate 2 respectively, and second sealing element 5 is used for sealing second accommodating cavity, first sealing element 4 includes first sealing layer 401 and baffle 402, is provided with step 409 on first sealing layer 401, and step 409 sets up on first sealing layer 401, and baffle 402 sets up at the junction of step 409 away from support plate 1 and reinforcing plate 2, through first sealing element 4 and second sealing element 5, first accommodating cavity and second accommodating cavity can be sealed respectively, and through step 409 and baffle 402 on first sealing element 4, first sealing layer 401 can be additionally provided with sol outside the junction of support plate 1 and reinforcing plate 2, the sol amount at the gap is increased by step 409, is better coated on the foaming structure, and the flow direction of sol can be defined by baffle 402, and better flow into the gap, solve the technical problem that the foaming structure is vulnerable to damage and poor sealing in the prior art, reach the technical effect that the foaming structure is more firm, and the sealing property is better.

[0033] In optional embodiments, the first sealing element 4 is provided with a hole 403, the hole 403 is provided through along the thickness direction of the first sealing element 4, and the first sealing layer 401 surrounds the hole 403.

[0034] In the above embodiment, the first sealing element 4 is provided with a hole 403 penetrating the first sealing element 4, the hole 403 can be provided with multiple, multiple holes 403 are arranged at intervals along the length direction of the first sealing element 4, each hole 403 is in a strip shape, so that multiple holes 403 can make the electrophoresis liquid pass through smoothly, so that the electrophoresis area is larger and the electrophoresis effect is more comprehensive.

[0035] In optional embodiments, the first sealing layer 401 is arranged at intervals with the inner wall of the first accommodating cavity.

[0036] In the above embodiment, the shape of the first sealing layer 401 is consistent with the shape of the cross section of the first accommodating cavity, and the first sealing layer 401 and the inner wall of the first accommodating cavity are provided with a gap, so that the electrophoresis liquid can pass through conveniently, and the machining size of the first accommodating cavity can also be avoided to be inaccurate, and the first sealing element 4 cannot enter.

[0037] In an optional embodiment, the first sealing member 4 further comprises a first supporting layer 404, which is arranged on one side of the first sealing layer 401 and connected with the inner wall of the first accommodating cavity.

[0038] In the above embodiment, the first supporting layer 404 can be made of metal material or nylon material, and can be consistent with the cross section of the first accommodating cavity. The first sealing layer 401 is fixed on the first supporting layer 404 and connected with the first supporting layer 404. The first supporting layer 404 is provided with protrusions, and the protrusions are arranged along the length direction of the first supporting layer 404. A hole 403 is arranged between two adjacent protrusions. The first sealing layer 401 is arranged beside the protrusions, and is flush with the surface of the protrusions. The first sealing layer 401 is arranged around the hole 403, so that the first sealing layer 401 can seal the electrophoresis cavity after melting.

[0039] In an optional embodiment, the first supporting layer 404 is provided with a first buckle 405, and the first supporting layer 404 is connected with the inner wall of the first accommodating cavity through the first buckle 405.

[0040] In the above embodiment, the length direction of the first buckle 405 can be perpendicular to the inner wall of the first accommodating cavity. The first supporting layer 404 can be provided with a plurality of first buckles 405, and the first buckles 405 are arranged along the length direction of the first supporting layer 404. Rectangular through holes are arranged on the side wall of the first accommodating cavity, and two first buckles 405 are arranged in the through holes, so that the first buckles 405 are connected with the through holes, and the first supporting layer 404 is fixed through the buckles.

[0041] In an optional embodiment, the side of the first supporting layer 404 away from the first sealing layer 401 is provided with a first foaming layer 406 and a limiting layer 407. The side of the first foaming layer 406 away from the first supporting layer 404 is provided with the limiting layer 407. The first supporting layer 404 passes through the first foaming layer 406 and is connected with the limiting layer 407.

[0042] In the above embodiment, the first foaming layer 406 is attached to the side of the first supporting layer 404 away from the first sealing layer 401, the first foaming layer 406 is connected with the first supporting layer 404, the size of the first foaming layer 406 is consistent with that of the first supporting layer 404, the first foaming layer 406 is used for foaming towards the inner wall of the first accommodating cavity, thereby filling the gap between the hole 403 and the first supporting layer 404 and the first accommodating cavity, so as to realize the sealing of the first accommodating cavity. Further, the limiting layer 407 can be arranged parallel to the first supporting layer 404, and the limiting layer 407 can be connected to the side of the first foaming layer 406 away from the first supporting layer 404, so as to limit the foaming direction of the first foaming layer 406 through the space between the limiting layer 407 and the first supporting layer 404, so that the sealing effect of the first accommodating cavity is better.

[0043] In an optional embodiment, the first supporting layer 404 is provided with a second buckle 408, the second buckle 408 is arranged perpendicular to the first supporting layer 404, and the second buckle 408 penetrates through the first foaming layer 406 and is connected with the limiting layer 407.

[0044] In the above embodiment, the first supporting layer 404 is provided with a plurality of second buckles 408, the plurality of second buckles 408 are arranged on the side of the first supporting layer 404 away from the first sealing layer 401, each second buckle 408 is arranged perpendicular to the first supporting layer 404, and the plurality of second buckles 408 are arranged at intervals along the surface of the first supporting layer 404. Each second buckle 408 penetrates through the first foaming layer 406 and penetrates through the through hole on the limiting layer 407, so that the second buckle 408 is connected with the limiting layer 407, thereby connecting the first supporting layer 404 and the limiting layer 407 firmly.

[0045] In an optional embodiment, the second sealing member 5 includes a second sealing layer 501, a second supporting layer 502 and a second foaming layer 503; the second sealing layer 501 is arranged at intervals with the inner wall of the second accommodating cavity, the second supporting layer 502 is connected with the second foaming layer 503 and the second sealing layer 501 respectively, and the second sealing layer 501 and the second foaming layer 503 are arranged at intervals.

[0046] In the above embodiment, the second sealing layer 501 and the second foaming layer 503 are arranged in a spaced manner, the second sealing layer 501 and the second foaming layer 503 are connected with the second supporting layer 502, the sizes of the second sealing layer 501, the second foaming layer 503 and the second supporting layer 502 are consistent, the shapes of the second sealing layer 501, the second foaming layer 503 and the second supporting layer 502 are consistent with the section of the second accommodating cavity, the second sealing layer 501 and the second foaming layer 503 are arranged in a spaced manner with the inner wall of the second accommodating cavity, the second sealing layer 501 is used for foaming towards the inner wall of the second accommodating cavity and sealing the second accommodating cavity, and the second sealing layer 501 can also adopt a sol material, and the second sealing layer 501 can be covered on the foaming structure after being melted.

[0047] In an optional embodiment, the second supporting layer 502 is provided with a plurality of hollow parts 504, the hollow parts 504 are arranged between the second foaming layer 503 and the second sealing layer 501, and the plurality of hollow parts 504 are arranged in a spaced manner along the length direction of the second supporting layer 502.

[0048] In the above embodiment, the hollow part 504 can be arranged in a rectangular shape, the second supporting layer 502 can be provided with a gap, the plurality of hollow parts 504 can be arranged in a spaced manner along the length direction of the second supporting layer 502, and the thicknesses of the plurality of hollow parts 504 can be consistent, so that a certain gap can be left between the second sealing layer 501 and the second foaming layer 503, so that after the second foaming layer 503 is foamed, the second foaming layer 503 can be foamed towards the inner wall of the second accommodating cavity, and then the excess foaming structure can enter the hollow part 504, so that the foaming structure is prevented from being higher than the second sealing layer 501, and thus the second sealing layer 501 cannot cover the second foaming layer 503 after being melted.

[0049] In an optional embodiment, the second supporting layer 502 is provided with a groove, the groove is arranged on the side of the hollow part 504 away from the second sealing layer 501, and the second foaming layer 503 is embedded in the groove.

[0050] In the above embodiment, the second supporting layer 502 is provided with a groove on the side away from the second sealing layer 501, the groove is in a strip shape, and the opening of the groove faces the inner wall of the second accommodating cavity, and the second foaming layer 503 can be fixed in the groove, so that the second foaming layer 503 can face the inner wall of the second accommodating cavity after being foamed, thereby better defining the foaming direction of the second foaming layer 503.

[0051] The above only describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cavity sealing device, characterized in that, Includes a support plate, a reinforcing plate, an outer plate, a first seal, and a second seal; The reinforcing plate is disposed between the supporting plate and the outer plate, the reinforcing plate and the supporting plate forming a first accommodating cavity, the reinforcing plate and the outer plate forming a second accommodating cavity, the first sealing member is disposed in the first accommodating cavity, the second sealing member is disposed in the second accommodating cavity, the first sealing member is connected to the supporting plate and the reinforcing plate respectively, and the first sealing member is used to seal the first accommodating cavity; the second sealing member is connected to the outer plate and the reinforcing plate respectively, and the second sealing member is used to seal the second accommodating cavity. The first sealing element includes a first sealing layer and a baffle. A step is provided on the first sealing layer. The baffle is provided at the connection between the step and the support plate and the reinforcing plate.

2. The cavity sealing device according to claim 1, characterized in that, The first sealing element has a hole that extends through the thickness of the first sealing element, and the first sealing layer surrounds the hole.

3. The cavity sealing device according to claim 1, characterized in that, The first sealing layer is spaced apart from the inner wall of the first accommodating cavity.

4. The cavity sealing device according to claim 1, characterized in that, The first sealing element further includes a first support layer, which is disposed on one side of the first sealing layer and is connected to the inner wall of the first accommodating cavity.

5. The cavity sealing device according to claim 4, characterized in that, The first support layer is provided with a first buckle, and the first support layer is engaged with the inner wall of the first receiving cavity through the first buckle.

6. The cavity sealing device according to claim 4, characterized in that, The first support layer has a first foam layer and a limiting layer on the side opposite to the first sealing layer, and the limiting layer is provided on the side of the first foam layer opposite to the first support layer. The first support layer passes through the first foam layer and is connected to the limiting layer.

7. The cavity sealing device according to claim 6, characterized in that, A second buckle is provided on the first support layer. The second buckle is perpendicular to the first support layer and passes through the first foam layer and engages with the limiting layer.

8. The cavity sealing device according to claim 1, characterized in that, The second seal includes a second sealing layer, a second support layer, and a second foaming layer; The second sealing layer is spaced apart from the inner wall of the second accommodating cavity, and the second support layer is connected to the second foaming layer and the second sealing layer respectively, with the second sealing layer and the second foaming layer spaced apart.

9. The cavity sealing device according to claim 8, characterized in that, The second support layer is provided with a hollow portion, which is disposed between the second foam layer and the second sealing layer, and a plurality of the hollow portions are spaced apart along the length direction of the second support layer.

10. The cavity sealing device according to claim 9, characterized in that, The second support layer is provided with a groove, which is located on the side of the hollow portion away from the second sealing layer, and the second foaming layer is embedded in the groove.

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