Sealing waterproof gasket and waterproof bolt

Abstract

The utility model provides a sealing waterproof gasket and a waterproof bolt, which belong to the technical field of sealing products and comprise a metal gasket, an upper sealing layer and a lower sealing layer. An assembly hole is formed in the middle of the metal gasket, the upper end face of the metal gasket is provided with an upper contact face, an upper annular groove is formed in the upper contact face, the lower end face of the metal gasket is provided with a lower contact face, and a lower annular groove is formed in the lower contact face. The upper sealing layer is embedded in the upper annular groove, and an upper sealing ring is arranged on the upper end face of the upper sealing layer. The lower sealing layer is embedded in the lower annular groove, and a lower sealing ring is arranged on the lower end face of the lower sealing layer. According to the sealing waterproof gasket provided by the utility model, soft contact and hard contact assembly modes can be respectively formed on the upper end surface and the lower end surface, the clearance surface difference of corresponding mounting surfaces is easy to ensure, the compression amount of the sealing waterproof gasket is controllable, and the sealing waterproof effect is ensured while the sealing waterproof effect is ensured. And the problem that the bolt is loosened due to torsion loss in the driving process is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing products, and more specifically, relates to a sealing waterproof gasket and a waterproof bolt. Background Art

[0002] A sealing waterproof gasket is a material used to fill joints or openings to prevent the penetration of liquids or gases, usually made of rubber, silica gel or other polymer materials. Its main function is to provide a waterproof barrier at various connection parts or structures to ensure that water does not enter the interior of the equipment or structure.

[0003] When connecting an automotive trim panel and automotive sheet metal, a waterproof bolt is installed under the trim panel. After a sealing waterproof gasket is sleeved outside the screw rod of the waterproof bolt, the screw rod penetrates through the connection hole of the automotive sheet metal and is locked with a nut, and the sealing connection is achieved by squeezing the sealing waterproof gasket.

[0004] In the prior art, the sealing waterproof gasket is usually made of an elastic material, and the sealing waterproof effect is achieved by squeezing the sealing waterproof gasket to make it deformed. However, the sealing waterproof gasket has a soft contact with the installation surface, and the compression amount of the sealing waterproof gasket cannot be controlled, and the situation of bolt loosening due to torque loss may occur during driving. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a sealing waterproof gasket, aiming to solve the problems that the sealing waterproof gasket has a soft contact with the installation surface, the compression amount of the sealing waterproof gasket cannot be controlled, and the bolt may become loose due to torque loss during driving.

[0006] To achieve the above object, the technical solution adopted by the utility model is: to provide a sealing waterproof gasket, including:

[0007] A metal gasket, the middle part of the metal gasket has an assembly hole, the upper end surface of the metal gasket has an upper contact surface, an upper annular groove is provided on the upper contact surface, the lower end surface of the metal gasket has a lower contact surface, and a lower annular groove is provided on the lower contact surface;

[0008] An upper sealing layer, the upper sealing layer is embedded in the upper annular groove, an upper sealing ring is provided on the upper end surface of the upper sealing layer, and the upper contact surface provides support in the height direction for the downward extrusion deformation of the upper sealing ring;

[0009] A lower sealing layer, the lower sealing layer is embedded in the lower annular groove, a lower sealing ring is provided on the lower end surface of the lower sealing layer, and the lower contact surface provides support in the height direction for the upward extrusion deformation of the lower sealing ring.

[0010] In a possible implementation, the metal gasket is axially provided with a communication hole, and a connecting body connecting the upper sealing layer and the lower sealing layer is arranged in the communication hole.

[0011] In a possible implementation, the number of the communication holes is multiple, and the multiple communication holes are circumferentially and uniformly arranged.

[0012] In a possible implementation, a sealing sleeve is circumferentially arranged on the inner wall of the assembly hole, and the sealing sleeve is connected to the upper sealing layer and / or the lower sealing layer.

[0013] In a possible implementation, the upper sealing layer, the lower sealing layer, the connecting body and the sealing sleeve are integrally injection-molded soft rubber.

[0014] In a possible implementation, the number of the upper sealing rings is at least two, the at least two upper sealing rings are coaxially arranged, and an upper deformation groove is formed between two adjacent upper sealing rings.

[0015] In a possible implementation, the number of the lower sealing rings is at least two, the at least two lower sealing rings are coaxially arranged, and a lower deformation groove is formed between two adjacent lower sealing rings.

[0016] In a possible implementation, the upper sealing layer is located on the outer circle of the upper contact surface, and the lower sealing layer is located on the inner circle of the lower contact surface.

[0017] In a possible implementation, the upper sealing layer is located on the inner circle of the upper contact surface, and the lower sealing layer is located on the outer circle of the lower contact surface.

[0018] The beneficial effects of a sealing and waterproof gasket provided by the present utility model are as follows: Compared with the prior art, an assembly hole is provided in the middle of the metal gasket. An upper annular groove is formed in the upper contact surface of the upper end face of the metal gasket, and an upper sealing layer is embedded in the upper annular groove. An upper sealing ring is provided on the upper end face of the upper sealing layer. A lower annular groove is formed in the lower contact surface of the lower end face of the metal gasket, and a lower sealing layer is embedded in the lower annular groove. A lower sealing ring is provided on the lower end face of the lower sealing layer. When using the sealing and waterproof gasket provided by the present utility model, the upper end face of the sealing and waterproof gasket and the corresponding installation surface achieve hard contact through the upper contact surface. It is easy to ensure the gap surface difference of the corresponding installation surface, and soft contact is achieved through the upper sealing ring. The upper sealing ring is deformed downward under the extrusion from above. When the upper sealing ring is gradually compressed to be flush with the upper contact surface, the upper contact surface forms a support to effectively protect the upper sealing ring and prevent the upper sealing ring from being damaged due to excessive deformation. The lower end face of the sealing and waterproof gasket and the corresponding installation surface achieve hard contact through the lower contact surface. It is easy to ensure the gap surface difference of the corresponding installation surface, and soft contact is achieved through the lower sealing ring. The lower sealing ring is deformed upward under the extrusion from below. When the lower sealing ring is gradually compressed to be flush with the lower contact surface, the lower contact surface forms a support to effectively protect the lower sealing ring and prevent the lower sealing ring from being damaged due to excessive deformation. An assembly method capable of forming soft contact and hard contact on its upper end face and lower end face respectively can be achieved. The compression amount of the sealing and waterproof gasket is controllable. While ensuring the sealing and waterproof effect, the problem of bolt loosening caused by torque loss during driving can be avoided.

[0019] The present utility model also provides a waterproof bolt, including the above-mentioned sealing and waterproof gasket.

[0020] The beneficial effects of a waterproof bolt provided by the present utility model are as follows: Compared with the prior art, due to the use of the above-mentioned sealing and waterproof gasket, it has the same beneficial effects as the sealing and waterproof gasket. The waterproof bolt and the sealing and waterproof gasket cooperate to achieve an assembly method of soft contact and hard contact. The compression amount of the sealing and waterproof gasket is controllable. While ensuring the sealing and waterproof effect, the problem of bolt loosening caused by torque loss during driving can be avoided. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 It is an assembly structure diagram of the sealing and waterproof gasket and the waterproof bolt provided by the present utility model;

[0023] Figure 2The top view of a sealing and waterproof gasket provided by the present utility model;

[0024] Figure 3 is the sectional view along Figure 2 line A-A in;

[0025] Figure 4 The bottom view of a sealing and waterproof gasket provided by the present utility model;

[0026] Figure 5 The top view of the metal gasket provided by the present utility model;

[0027] Figure 6 The bottom view of the metal gasket provided by the present utility model.

[0028] Explanation of reference numerals:

[0029] 100, metal gasket; 110, assembly hole; 120, upper contact surface; 130, upper annular groove; 140, lower contact surface; 150, lower annular groove; 160, communication hole; 200, upper sealing layer; 210, upper sealing ring; 220, upper deformation groove; 300, lower sealing layer; 310, lower sealing ring; 320, lower deformation groove; 400, connecting body; 500, sealing sleeve; 600, waterproof bolt; 700, sealing and waterproof gasket; 800, automotive decorative panel; 900, automotive sheet metal. Detailed implementation manners

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0031] In the claims, the description and the following drawings of the present utility model, unless otherwise clearly defined, when using terms such as "first", "second" or "third", etc., are all used to distinguish different objects and are not used to describe a specific order.

[0032] In the claims, the description and the following drawings of the present utility model, unless otherwise clearly defined, for orientation terms, when using terms such as "center", "horizontal", "longitudinal", "level", "vertical", "top", "bottom", "inner", "outer", "lower", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", "high", "low", etc. to indicate the orientation or position relationship, it is based on the orientation and position relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the specific protection scope of the present utility model.

[0033] Please refer to Figures 2 to 6 , and now a sealing and waterproof gasket provided by the present utility model will be described. A sealing and waterproof gasket includes a metal gasket 100, an upper sealing layer 200, and a lower sealing layer 300.

[0034] The middle part of the metal gasket 100 has an assembly hole 110. The upper end surface of the metal gasket 100 has an upper contact surface 120, and an upper annular groove 130 is formed on the upper contact surface 120. The lower end surface of the metal gasket 100 has a lower contact surface 140, and a lower annular groove 150 is formed on the lower contact surface 140; the upper sealing layer 200 is embedded in the upper annular groove 130, and an upper sealing ring 210 is provided on the upper end surface of the upper sealing layer 200; the lower sealing layer 300 is embedded in the lower annular groove 150, and a lower sealing ring 310 is provided on the lower end surface of the lower sealing layer 300.

[0035] For a sealing and waterproof gasket provided by the present utility model, compared with the prior art, the middle part of the metal gasket 100 has an assembly hole 110, and an upper annular groove 130 is formed on the upper contact surface 120 of the upper end surface of the metal gasket 100. The upper sealing layer 200 is embedded in the upper annular groove 130, and an upper sealing ring 210 is provided on the upper end surface of the upper sealing layer 200. A lower annular groove 150 is formed on the lower contact surface 140 of the lower end surface of the metal gasket 100. The lower sealing layer 300 is embedded in the lower annular groove 150, and a lower sealing ring 310 is provided on the lower end surface of the lower sealing layer 300. When using the sealing and waterproof gasket provided by the present utility model, the upper end surface of the sealing and waterproof gasket 700 is in hard contact with the corresponding installation surface through the upper contact surface 120, and it is easy to ensure the clearance surface difference of the corresponding installation surface. And soft contact is achieved through the upper sealing ring 210. The upper sealing ring 210 is deformed downward under the extrusion from above. When the upper sealing ring 210 is gradually compressed to be flush with the upper contact surface 120, the upper contact surface 120 forms a support to effectively protect the upper sealing ring 210 and prevent the upper sealing ring 210 from being damaged due to excessive deformation; the lower end surface of the sealing and waterproof gasket 700 is in hard contact with the corresponding installation surface through the lower contact surface 140, and it is easy to ensure the clearance surface difference of the corresponding installation surface. And soft contact is achieved through the lower sealing ring 310. The lower sealing ring 310 is deformed upward under the extrusion from below. When the lower sealing ring 310 is gradually compressed to be flush with the lower contact surface 140, the lower contact surface 140 forms a support to effectively protect the lower sealing ring 310 and prevent the lower sealing ring 310 from being damaged due to excessive deformation. It can form an assembly method of soft contact and hard contact on its upper end surface and lower end surface respectively. The compression amount of the sealing and waterproof gasket 700 is controllable. While ensuring the sealing and waterproof effect, it can avoid the problem of bolt backloosening caused by torque loss during driving.

[0036] It should be noted that, please refer to Figure 1, when connecting the automotive trim panel 800 and the automotive sheet metal 900, the waterproof bolt 600 is installed under the automotive trim panel 800. After a sealing waterproof gasket 700 is sleeved outside the screw rod of the waterproof bolt 600, the screw rod penetrates through the connection hole of the automotive sheet metal 900 and is locked with a nut, and the sealing connection is achieved by squeezing the sealing waterproof gasket 700.

[0037] Please refer to Figures 2 to 4 , the metal gasket 100 is axially provided with a communication hole 160. The communication hole 160 is a circular through hole, which is coaxially arranged with the assembly hole 110. A connection body 400 is installed inside the communication hole 160. The upper end of the connection body 400 is connected to the upper sealing layer 200, and the lower end of the connection body 400 is connected to the lower sealing layer 300, thereby connecting the upper sealing layer 200 and the lower sealing layer 300 into a whole, improving the structural strength of the upper sealing layer 200 and the lower sealing layer 300 on the upper and lower end faces of the metal gasket 100, and avoiding the accidental detachment of the two.

[0038] Specifically, the number of the communication holes 160 is multiple, and the multiple communication holes 160 are circumferentially and evenly arranged. The connection bodies 400 are embedded in the multiple communication holes 160. The multiple connection bodies 400 circumferentially connect the upper sealing layer 200 and the lower sealing layer 300, and the multiple connection bodies 400 form multiple circumferential connection structures between the upper sealing layer 200 and the lower sealing layer 300, further improving the structural strength of the upper sealing layer 200 and the lower sealing layer 300.

[0039] In this embodiment, the number of the communication holes 160 is four, and the four communication holes 160 are circumferentially and evenly distributed, forming four uniform connection structures between the upper sealing layer 200 and the lower sealing layer 300.

[0040] In addition, a sealing sleeve 500 is circumferentially arranged on the inner wall of the assembly hole 110. The sealing sleeve 500 is in interference fit with the inner wall of the assembly hole 110 to ensure the stable installation of the sealing sleeve 500 in the assembly hole 110. The sealing sleeve 500 is sleeved on the bolt rod of the waterproof bolt 600, and the inner wall of the sealing sleeve 500 is in interference fit with the bolt rod of the waterproof bolt 600, thereby improving the installation stability of the sealing waterproof gasket 700 on the waterproof bolt 600.

[0041] Wherein, the upper end and the lower end of the sealing sleeve 500 can be simultaneously connected to the upper sealing layer 200 and the lower sealing layer 300, or can be separately connected to the upper sealing layer 200 or the lower sealing layer 300, so that the sealing sleeve 500 forms an integral structure with the upper sealing layer 200 and / or the lower sealing layer 300, improving the structural strength.

[0042] Specifically, the upper sealing layer 200, the lower sealing layer 300, the connecting body 400 and the sealing sleeve 500 are made of soft rubber formed by integral injection molding. In the form of secondary injection molding, the above-mentioned upper sealing layer 200, lower sealing layer 300, connecting body 400 and sealing sleeve 500 are directly formed on the metal gasket 100 to form a structurally stable waterproof sealing gasket 700.

[0043] Among them, the number of the upper sealing rings 210 is at least two. At least two upper sealing rings 210 are coaxially arranged, and an upper deformation groove 220 is formed between two adjacent upper sealing rings 210. The bottom of the upper deformation groove 220 is lower than the end face height of the upper sealing layer 200. When two adjacent upper sealing rings 210 of the upper deformation groove 220 are extruded by the corresponding mounting surface, the two upper sealing rings 210 will deform into the upper deformation groove 220 at the same time. The upper deformation groove 220 can provide a space for accommodating the deformation amount of the two upper sealing rings 210, ensuring that the upper contact surface 120 can be in hard contact with the mounting surface it cooperates with. At the same time, at least two upper sealing rings 210 can improve the sealing and waterproof effect of the upper end face.

[0044] The number of the lower sealing rings 310 is at least two. At least two lower sealing rings 310 are coaxially arranged, and a lower deformation groove 320 is formed between two adjacent lower sealing rings 310. The bottom of the lower deformation groove 320 is lower than the end face height of the lower sealing layer 300. When two adjacent lower sealing rings 310 of the lower deformation groove 320 are extruded by the corresponding mounting surface, the two lower sealing rings 310 will deform into the lower deformation groove 320 at the same time. The lower deformation groove 320 can provide a space for accommodating the deformation amount of the two lower sealing rings 310, ensuring that the lower contact surface 140 can be in hard contact with the mounting surface it cooperates with. At the same time, at least two lower sealing rings 310 can improve the sealing and waterproof effect of the lower end face.

[0045] Optionally, the upper sealing layer 200 is located on the outer ring of the upper contact surface 120, and the lower sealing layer 300 is located on the inner ring of the lower contact surface 140. Or, the upper sealing layer 200 is located on the inner ring of the upper contact surface 120, and the lower sealing layer 300 is located on the outer ring of the lower contact surface 140. The upper sealing layer 200 and the lower sealing layer 300 are arranged staggeredly, which can evenly distribute the deformation and molding pressure of the upper sealing ring 210 and the lower sealing ring 310 in different areas of the waterproof sealing gasket 700. The waterproof sealing gasket 700 is evenly stressed, and the sealing and waterproof effect will be better.

[0046] Based on the same inventive concept, the present utility model also provides a waterproof bolt. Please refer to Figure 1, the waterproof bolt uses the above-mentioned sealing waterproof gasket, so it has the same beneficial effects as the sealing waterproof gasket. The waterproof bolt 600 and the sealing waterproof gasket 700 are used to realize the assembly methods of soft contact and hard contact. The compression amount of the sealing waterproof gasket 700 is controllable, which can ensure the sealing and waterproof effect while avoiding the problem of bolt loosening caused by torque loss during driving.

[0047] The following are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sealed waterproof gasket, characterized in that, Comprising: A metal gasket (100), a middle part of the metal gasket (100) is provided with an assembly hole (110), an upper end face of the metal gasket (100) is provided with an upper contact surface (120), an upper annular groove (130) is formed in the upper contact surface (120), a lower end face of the metal gasket (100) is provided with a lower contact surface (140), and a lower annular groove (150) is formed in the lower contact surface (140); An upper sealing layer (200), the upper sealing layer (200) is embedded in the upper annular groove (130), an upper sealing ring (210) is arranged on an upper end face of the upper sealing layer (200), and the upper contact surface (120) provides support in the height direction for downward extrusion deformation of the upper sealing ring (210); A lower sealing layer (300), the lower sealing layer (300) is embedded in the lower annular groove (150), a lower sealing ring (310) is arranged on a lower end face of the lower sealing layer (300), and the lower contact surface (140) provides support in the height direction for upward extrusion deformation of the lower sealing ring (310).

2. The sealing and waterproof gasket according to claim 1, characterized in that, The metal gasket (100) is axially provided with a communication hole (160), and a connecting body (400) connecting the upper sealing layer (200) and the lower sealing layer (300) is arranged in the communication hole (160).

3. A sealing and waterproof gasket according to claim 2, characterized in that, The number of the communication holes (160) is multiple, and the multiple communication holes (160) are circumferentially and uniformly arranged.

4. A sealing and waterproof gasket according to claim 2, characterized in that, A sealing sleeve (500) is circumferentially arranged on an inner wall of the assembly hole (110), and the sealing sleeve (500) is connected to the upper sealing layer (200) and / or the lower sealing layer (300).

5. A sealing and waterproof gasket according to claim 4, wherein The upper sealing layer (200), the lower sealing layer (300), the connecting body (400) and the sealing sleeve (500) are made of soft rubber integrally formed by injection molding.

6. A sealing and waterproof gasket according to claim 1, characterized in that, The number of the upper sealing rings (210) is at least two, the at least two upper sealing rings (210) are coaxially arranged, and an upper deformation groove (220) is formed between adjacent two upper sealing rings (210).

7. A sealing and waterproof gasket according to claim 1, characterized in that, The number of the lower sealing rings (310) is at least two, the at least two lower sealing rings (310) are coaxially arranged, and a lower deformation groove (320) is formed between adjacent two lower sealing rings (310).

8. A sealing and waterproof gasket according to any one of claims 1-7, characterized in that, The upper sealing layer (200) is located on an outer ring of the upper contact surface (120), and the lower sealing layer (300) is located on an inner ring of the lower contact surface (140).

9. A sealing and waterproof gasket according to any one of claims 1-7, characterized in that, The upper sealing layer (200) is located on an inner ring of the upper contact surface (120), and the lower sealing layer (300) is located on an outer ring of the lower contact surface (140).

10. A waterproof bolt, characterized in that, Including the sealing and waterproof gasket according to any one of claims 1-9.

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