CN216430217U

CN216430217U - Sealing and fastening structure

Info

Publication number: CN216430217U
Application number: CN202122859492.8U
Authority: CN
Inventors: 曹小勇; 施天寅
Original assignee: SAIC General Motors Corp Ltd; Pan Asia Technical Automotive Center Co Ltd
Current assignee: SAIC General Motors Corp Ltd; Pan Asia Technical Automotive Center Co Ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-05-03
Anticipated expiration: 2031-11-19

Abstract

The utility model discloses a sealing fastening structure, which comprises a connecting bolt, a cushion block and a sealing ring; the connecting bolt comprises a bolt head and a bolt column connected with the bolt head, and the cushion block is sleeved on the bolt column and connected with the bolt head; the cushion block is provided with a groove, the sealing ring is sleeved on the bolt column, and at least part of the sealing ring is positioned in the groove. The sealing ring in the sealing and fastening structure is clamped in the groove, so that the sealing ring is prevented from moving, the sealing ring is convenient to mount, and the sealing performance after use is improved.

Description

Sealing and fastening structure

Technical Field

The utility model relates to an assembly part field especially relates to a sealed fastening structure.

Background

A fastening bolt is a commonly used type of fastener, and is generally used to fixedly connect two objects, such as two panels.

In order to increase the sealing performance when the fastening bolt is installed, a sealing ring is sleeved on the fastening bolt. However, after a long time use, the seal ring is liable to shift, and the sealing property is insufficient. During installation, the sealing ring is sleeved on the fastening bolt, installation steps are added, operation is inconvenient, and the sealing ring is easy to lose.

In view of the above, improvements are needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a leakproofness well with easy to assemble's sealed fastening structure.

The technical scheme of the utility model provides a sealing fastening structure, which comprises a connecting bolt, a cushion block and a sealing ring; the connecting bolt comprises a bolt head and a bolt column connected with the bolt head, and the cushion block is sleeved on the bolt column and connected with the bolt head; the cushion block is provided with a groove, the sealing ring is sleeved on the bolt column, and at least part of the sealing ring is positioned in the groove.

Further, the sealing ring is a rubber ring.

Further, the spacer has a first end face adjacent the bolt head and a second end face remote from the bolt head, the groove having a groove bottom wall; the distance between the first end face and the groove bottom wall is 0.4-0.5 times of the distance between the second end face and the groove bottom wall.

Further, the cushion block is provided with an arc-shaped side face, and the arc-shaped side face is connected between the first end face and the second end face.

Further, a plurality of teeth are arranged on the second end face at intervals, and the teeth surround the sealing ring.

Furthermore, an accommodating groove communicated with the groove is further formed in the cushion block, and an elastic piece and a clamping block used for clamping the sealing ring are arranged in the accommodating groove; the clamp splice with holding tank sliding connection, the elastic component sets up in the holding tank, and with the clamp splice is connected.

Further, the bolt head includes an operating portion and a connecting portion connected between the operating portion and the bolt column; the connecting part is provided with a first connecting end connected with the operating part and a second connecting end connected with the bolt column, and the width of the first connecting end is smaller than that of the second connecting end.

Further, a reinforcing rib is connected between the connecting part and the operating part.

Furthermore, a clamping groove is formed in the side face of the operating portion.

Furthermore, the connecting bolt also comprises a nut, and the nut is sleeved on the bolt column and is in threaded connection with the bolt column.

By adopting the technical scheme, the method has the following beneficial effects:

the utility model discloses a sealed fastening structure, including connecting bolt, cushion and sealing ring. The connecting bolt comprises a bolt head and a bolt column connected with the bolt head, and the cushion block is sleeved on the bolt column and connected with the bolt head. The cushion block is provided with a groove, the sealing ring is sleeved on the bolt column, and at least part of the sealing ring is positioned in the groove. Sealing ring card in the sealed fastening structure avoids the sealing ring to remove in the recess, easy to assemble and the leakproofness after improving the use.

Drawings

Fig. 1 is a schematic view of a sealing and fastening structure according to an embodiment of the present invention;

fig. 2 is a schematic view of the sealing and fastening structure according to an embodiment of the present invention;

fig. 3 is a schematic view of a connecting bolt according to an embodiment of the present invention;

FIG. 4 is a schematic view of the cushion block according to an embodiment of the present invention

FIG. 5 is a schematic view of a cushion block and teeth according to an embodiment of the present invention;

FIG. 6 is a schematic view of a cushion, a groove and teeth according to an embodiment of the present invention;

FIG. 7 is a schematic view of the cushion block, the clamping block and the elastic member according to an embodiment of the present invention;

fig. 8 is a schematic view of a bolt head according to an embodiment of the present invention;

fig. 9 is a schematic view of an operation portion according to an embodiment of the present invention.

Detailed Description

The following describes the present invention with reference to the accompanying drawings.

It is easily understood that, according to the technical solution of the present invention, a plurality of structural modes and implementation modes that can be mutually replaced by those of ordinary skill in the art can be achieved without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are only exemplary illustrations of the technical solutions of the present invention, and should not be construed as limiting or restricting the technical solutions of the present invention in its entirety or as a limitation of the present invention.

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.

As shown in fig. 1-2, a sealing and fastening structure 10 according to an embodiment of the present invention includes a connecting bolt 1, a spacer 2, and a sealing ring 3.

The connecting bolt 1 comprises a bolt head 11 and a bolt column 12 connected with the bolt head 11, and the cushion block 2 is sleeved on the bolt column 12 and connected with the bolt head 11.

The cushion block 2 is provided with a groove 21, the sealing ring 3 is sleeved on the bolt column 12, and at least part of the sealing ring 3 is positioned in the groove 21.

The sealing fastening structure 10 is composed of a connecting bolt 1, a cushion block 2 and a sealing ring 3, and is used for connecting and fixing two objects and improving the sealing performance of a connecting part. The connecting bolt 1 includes a bolt head 11 and a bolt column 12, and the bolt column 12 is connected to the bottom end of the bolt head 11 and is integrally formed with the bolt head 11. The width of the bolt head 11 is greater than the width of the bolt shank 12.

The cushion block 2 is provided with a through hole, and the bolt column 12 penetrates through the through hole, so that the cushion block 2 is sleeved on the bolt column 12. The bolt column 12 is in interference fit with the through hole, and the cushion block 2 is in contact with the bolt head 11. A recess 21 is provided in the end face of the spacer 2 remote from the bolt head 11.

The seal ring 3 has a through hole through which the stud stub 12 passes, so that the seal ring 3 is fitted over the stud stub 12. The groove 21 is an annular groove, and at least part of the sealing ring 3 is clamped in the groove 21, so that the sealing ring 3 is fixed with the cushion block 2. Therefore, when the sealing ring is installed, the installation and the fixation of the object can be completed only by screwing the connecting bolt 1, the sealing ring 3 does not need to be placed first, and then the connecting bolt 1 does not need to be installed, so that the installation steps are reduced, and the installation efficiency is improved. Moreover, the groove 21 restricts the movement of the seal ring 3, and prevents the seal ring 3 from moving to deteriorate the sealing performance after installation.

Before mounting, a part of the sealing ring 3 is located inside the groove 21 and another part is located outside the groove 21. After tightening the connecting bolt 1, the seal ring 3 is deformed, and a part or all of it exposed to the outside of the groove 21 is pressed into the groove 21.

In one embodiment, as shown in fig. 1-2, the sealing ring 3 is a rubber ring. The rubber ring has certain elasticity, and after connecting bolt 1 screws up, the rubber ring pressurized deformation has improved the compactedness, has guaranteed sealed function. In the embodiment, the rubber ring adopts closed-cell EPDM Foam, which is cheap and reduces the production cost.

In one embodiment, as shown in fig. 1 and 3-4, the head block 2 has a first end surface 22 adjacent the bolt head 11 and a second end surface 23 remote from the bolt head 11, the groove 21 having a groove bottom wall 211. The distance between the first end face 22 and the groove bottom wall 211 is 0.4-0.5 times of the distance between the second end face 23 and the groove bottom wall 211.

Specifically, the head block 2 has a first end face 22 and a second end face 23, wherein the first end face 22 is closer to the bolt head 11 than the second end face 23. The groove 21 has a groove bottom wall 211, the groove bottom wall 211 being located between the first end face 22 and the second end face 23. The distance between the first end surface 22 and the groove bottom wall 211 is defined as H1, and the distance between the second end surface 23 and the groove bottom wall 211 is defined as H2. The relationship between H1 and H2 is H2 ═ 0.4 to 0.5 × H1.

In one embodiment, as shown in fig. 1 and 4, the spacer 2 has an arcuate side 24, the arcuate side 24 being connected between the first end surface 22 and the second end surface 23. The curved side surface 24 has one end connected to the first end surface 22 and the other end connected to the second end surface 23. The curved side surface 24 is curved with its convex surface facing outward. The arc-shaped side surface 24 has better mechanical property, improves the structural strength of the cushion block 2, and is not easy to damage when being collided.

In one embodiment, as shown in fig. 1 and 5-6, a plurality of teeth 25 are spaced apart from each other on the second end surface 23, and the plurality of teeth 25 surround the sealing ring 3. The teeth 25 are formed by the second end surface 23 protruding in a direction away from the bolt head 11, a plurality of teeth 25 are spaced from each other, and the distance between any two adjacent teeth 25 is equal. The teeth 25 are surrounded around the bolt shank 12 and around the outside of the sealing ring 3. When the device is installed, the teeth 25 are abutted to the object, so that friction force is increased, and the fastening effect is improved.

In one embodiment, as shown in fig. 1 and 7, the spacer 2 is further provided with a receiving groove 26 communicating with the groove 21, and the receiving groove 26 is provided with an elastic member 28 and a clamping block 27 for clamping the seal ring 3. The clamping block 27 is slidably connected with the receiving groove 26, and the elastic member 28 is arranged in the receiving groove 26 and connected with the clamping block 27.

The receiving groove 26 is located at one side of the groove 21, communicating with the groove 21. A clamping block 27 and an elastic element 28 are arranged in the accommodating groove 26, and the clamping block 27 is in clearance fit with the accommodating groove 26 so as to slide in the accommodating groove 26. The elastic member 28 has one end connected to the clamping piece 27 and the other end connected to a groove wall of the receiving groove 26. When a portion of the sealing ring 3 is clamped in the groove 21, the clamping block 27 abuts against the sealing ring 3, the elastic member 28 is compressed and reacts against the clamping block 27, so that the clamping block 27 clamps the sealing ring 3 and prevents the sealing ring 3 from being disengaged from the groove 21.

Optionally, the resilient member 28 is a telescoping spring.

In one embodiment, as shown in fig. 1 and 3, the bolt head 11 includes an operating portion 111 and a connecting portion 112, and the connecting portion 112 is connected between the operating portion 111 and the bolt column 12. The connecting portion 112 has a first connecting end 1121 connected to the operating portion 111 and a second connecting end 1122 connected to the bolt column 12, and the width of the first connecting end 1121 is smaller than that of the second connecting end 1122.

Specifically, the bolt head 11 includes an operating portion 111 and a connecting portion 112, and one end of the connecting portion 112 is connected to the operating portion 111 and the other end is connected to the bolt column 12. During installation, the connecting portion 112 and the bolt column 12 are rotated by screwing the operating portion 111. The end of the connecting portion 112 connected to the operating portion 111 is a first connecting end 1121, the end of the connecting portion 112 connected to the bolt column 12 is a second connecting end 1122, the width of the first connecting end 1121 is smaller than the width of the second connecting end 1122, and the entire connecting portion 112 is trapezoidal. So set up, increased with the area of contact of cushion 2, kept off cushion 2 better.

In one embodiment, as shown in fig. 1 and 8, a reinforcing rib 113 is connected between the connecting portion 112 and the operating portion 111. One end of the reinforcing rib 113 is connected to the connecting portion 112, and the other end is connected to the operating portion 111, thereby improving the structural strength of the bolt head 11.

In one embodiment, as shown in fig. 1 and 9, a slot 1111 is disposed on a side surface of the operation portion 111. On both side surfaces of the operation portion 111, card slots 1111 are recessed, respectively. When the connecting bolt 1 is jammed by wrong teeth, a worker can find a workpiece to be jammed in the clamping groove 1111 and fixedly clamped with the connecting bolt 1, and then pull out the connecting bolt 1. The setting of draw-in groove 1111 conveniently dismantles.

In one embodiment, as shown in fig. 1-2, the connecting bolt 1 further includes a nut 13, and the nut 13 is sleeved on the bolt 12 and is in threaded connection with the bolt 12. The nut 13 is provided with a matching hole, an internal thread is arranged in the matching hole, an external thread is arranged on the bolt, the nut 13 is sleeved on the bolt column 12, and the external thread of the bolt column 12 is meshed with the internal thread in the matching hole, so that the connection is firm. When installed, the object is sandwiched between the bolt head 11 and the nut 13. The arrangement is convenient for workers to install, and threaded holes do not need to be drilled on objects.

To sum up, the utility model discloses a sealed fastening structure 10, including connecting bolt 1, cushion 2 and sealing ring 3. The connecting bolt 1 comprises a bolt head 11 and a bolt column 12 connected with the bolt head 11, and the cushion block 2 is sleeved on the bolt column 12 and connected with the bolt head 11. The cushion block 2 is provided with a groove 21, the sealing ring 3 is sleeved on the bolt column 12, and at least part of the sealing ring 3 is positioned in the groove 21. The groove 21 limits the movement of the sealing ring 3, and avoids the sealing performance reduction caused by the dislocation of the sealing ring 3 after installation. Before installation, the sealing ring 3 is fixedly connected with the cushion block 2 through the groove 21 and can be synchronously installed with the connecting bolt 1, installation steps are reduced, and operation efficiency is improved.

According to the needs, the above technical schemes can be combined to achieve the best technical effect.

The foregoing is considered as illustrative only of the principles and preferred embodiments of the invention. It should be noted that, for those skilled in the art, on the basis of the principle of the present invention, several other modifications can be made, and the protection scope of the present invention should be considered.

Claims

1. A sealing and fastening structure is characterized by comprising a connecting bolt, a cushion block and a sealing ring;

the connecting bolt comprises a bolt head and a bolt column connected with the bolt head, and the cushion block is sleeved on the bolt column and connected with the bolt head;

the cushion block is provided with a groove, the sealing ring is sleeved on the bolt column, and at least part of the sealing ring is positioned in the groove.

2. The seal fastening structure of claim 1, wherein the seal ring is a rubber ring.

3. The seal fastening arrangement of claim 1, wherein the spacer has a first end face proximal to the bolt head and a second end face distal to the bolt head, the groove having a groove bottom wall;

the distance between the first end face and the groove bottom wall is 0.4-0.5 times of the distance between the second end face and the groove bottom wall.

4. The seal-fastening structure of claim 3, wherein the spacer has an arcuate side surface connected between the first end surface and the second end surface.

5. The seal fastening arrangement of claim 3, wherein a plurality of teeth are spaced on the second end surface, the plurality of teeth surrounding the seal ring.

6. The seal fastening structure according to claim 1, wherein a receiving groove communicating with the groove is further provided in the packing, and an elastic member and a clamping block for clamping the seal ring are provided in the receiving groove;

the clamp splice with holding tank sliding connection, the elastic component sets up in the holding tank, and with the clamp splice is connected.

7. The seal fastening structure according to claim 1, wherein the bolt head includes an operating portion and a connecting portion that is connected between the operating portion and the bolt column;

the connecting part is provided with a first connecting end connected with the operating part and a second connecting end connected with the bolt column, and the width of the first connecting end is smaller than that of the second connecting end.

8. The seal fastening structure according to claim 7, wherein a reinforcing rib is connected between the connecting portion and the operating portion.

9. The seal fastening structure according to claim 7, wherein a side surface of the operating portion is provided with a catching groove.

10. The seal fastening arrangement of claim 1, wherein the connecting bolt further comprises a nut that fits over the bolt shank in threaded engagement with the bolt shank.