CN219366530U

CN219366530U - Self-limiting bolt sealing structure

Info

Publication number: CN219366530U
Application number: CN202223377993.3U
Authority: CN
Inventors: 柴文兵; 吉祥; 曾国建; 胡唯
Original assignee: Anhui Rntec Technology Co ltd
Current assignee: Anhui Rntec Technology Co ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-07-18
Anticipated expiration: 2032-12-14

Abstract

The utility model relates to the technical field of bolt sealing, in particular to a self-limiting bolt sealing structure. The self-limiting bolt sealing structure comprises: an upper cover; a lower housing; the sealing gasket is arranged on the upper cover body and the lower shell; a nut; from limit bolt, with the installation upper cover body, lower casing, sealed pad and nut, just from limit bolt includes nut and nail post, the nail post includes spacing portion and screw thread portion, spacing portion with the nut is connected, screw thread portion with spacing portion is kept away from the other end of nut is connected, the radius of spacing portion is greater than the radius of screw thread portion. The self-limiting bolt is combined with the nut after passing through the upper cover body, the sealing gasket and the lower shell, the limiting part can keep the compression amount of the sealing gasket, the pressing ring is tightly attached to the upper cover body, the sealing gasket is compressed after keeping rigid contact, the sealing operation is completed, the space occupation rate is reduced, the cost is reduced, the installation is convenient and fast, and the reliability is high.

Description

Self-limiting bolt sealing structure

Technical Field

The utility model relates to the technical field of bolt sealing, in particular to a self-limiting bolt sealing structure.

Background

In the prior art, a sealing gasket made of an elastoplastic material and having a certain thickness is filled between sealing surfaces of parts, so that compression rebound stress of the sealing material is promoted to tightly fill uneven parts of the sealing surfaces, and the sealing purpose is achieved. In order to solve the problem that the sealing failure is caused by the damping loosening of the torsion of the bolt due to non-rigid contact of the sealing interface, a pull rivet nut or a sealing gasket is usually adopted to ensure the rigid contact of the sealing interface and the effective compression of the control sealing gasket in a self-strip steel sleeve limiting mode. However, the steel sleeve and the blind rivet nut have larger outer diameters basically, and occupy a certain sealing interface space.

Disclosure of Invention

The utility model aims to solve the problem of occupying the space of a sealing interface in the prior art, and provides a self-limiting bolt sealing structure which can reduce the space occupancy of the sealing interface and can ensure the rigid contact of the sealing interface and control the effective compression of a sealing gasket.

In order to achieve the above object, the present utility model provides a self-limiting bolt sealing structure, comprising: an upper cover; a lower housing; the sealing gasket is arranged on the upper cover body and the lower shell; a nut; from limit bolt, with the installation upper cover body, lower casing, sealed pad and nut, just from limit bolt includes nut and nail post, the nail post includes spacing portion and screw thread portion, spacing portion with the nut is connected, screw thread portion with spacing portion is kept away from the other end of nut is connected, the radius of spacing portion is greater than the radius of screw thread portion.

Preferably, the bottom edge of the second mounting hole is provided with an annular groove;

preferably, the inner edge of the top of the nut is provided with an annular protrusion for limiting with the annular groove.

Preferably, the limiting part is in the shape of a polished rod cylinder.

Preferably, the nut is a straight hexagonal prism.

Preferably, the bottom of the straight hexagonal prism nut is provided with a compression ring.

Preferably, the sealing gasket is made of foaming silica gel material or silicone rubber material.

Preferably, in the case that the gasket is a foamed silicone material, the thickness of the gasket is 1x, where x is a unit length.

Preferably, in the case that the gasket is a silicone rubber material, the thickness of the gasket is 2x, where x is a unit length.

According to the technical scheme, the self-limiting bolt sealing structure comprises the limiting part and the threaded part, and the radius of the limiting part is equal to that of the first mounting hole of the upper cover body and that of the third mounting hole of the sealing gasket, so that the self-limiting bolt sealing structure can directly contact with the lower shell through the first mounting hole and the third mounting hole, and the radius of the threaded part is equal to that of the second mounting hole of the lower shell, and can be matched with a nut positioned below the lower shell through the second mounting hole. Compared with the prior art, the self-limiting bolt sealing structure has the advantages that the mode that the limiting part is in direct contact with the sealing gasket is adopted to replace the mode that the threaded part is in direct contact with the sealing gasket, so that gaps between threads and the sealing gasket are reduced, the sealing performance is improved, and meanwhile, the self-limiting bolt sealing structure has the advantages of being simple in process, convenient to install and high in reliability; in addition, the self-limiting bolt sealing structure can also ensure rigid contact, and under the state of good sealing effect, the occupation rate of the sealing interface space is greatly reduced, and compared with a rivet nut or a steel sleeve increasing scheme on the market, the cost is lower.

Drawings

FIG. 1 is a schematic illustration of a self-limiting bolt seal structure according to one embodiment of the present utility model;

FIG. 2 is a partial structural cross-sectional view of a self-limiting bolt seal structure according to one embodiment of the present utility model;

FIG. 3 is a structural cross-sectional view of a self-limiting bolt according to one embodiment of the present utility model;

fig. 4 is a schematic structural view of a self-limiting bolt seal structure according to an embodiment of the present utility model after installation.

Description of the reference numerals

1. Self-limiting bolt 2 and stud

3. Screw cap 4 and pressing ring

5. Limit part 6, screw part

7. Upper cover 8, sealing gasket

9. Lower housing 10, nut

11. First mounting hole 12, second mounting hole

13. Third mounting hole 14, annular groove

15. Annular protrusion

Detailed Description

The following describes the detailed implementation of the embodiments of the present utility model with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.

Fig. 1 is a schematic structural view of a self-limiting bolt seal structure according to an embodiment of the present utility model. Fig. 2 is a schematic view showing a part of the structure of the self-limiting bolt seal structure according to an embodiment of the present utility model. In fig. 1 and 2, the self-limiting bolt sealing structure may include a self-limiting bolt 1, an upper cover 7, a lower housing 9, a gasket 8, and a nut 10. Wherein, the upper cover 7 may be provided with a first mounting hole 11. The lower case 9 may be provided with a second mounting hole 12. The radius of the second mounting hole 12 may be equal to the radius of the first mounting hole 11. The gasket 8 may be disposed between the upper cover 7 and the lower case 9, and the gasket 8 is provided with a third mounting hole 13.

The self-limiting bolt 1 may be used to cooperate with the first mounting hole 11, the second mounting hole 12, and the third mounting hole 13 to mount the upper cover 7, the lower housing 9, the gasket 8, and the nut 10. Fig. 3 is a schematic view showing the structure of a self-limiting bolt according to an embodiment of the present utility model. In this fig. 3, the self-limiting bolt 1 may comprise a nut 3 and a stud 2. The post 2 may include a stop 5 and a threaded portion 6. The limit part 5 is connected with the nut 3, the thread part 6 is connected with the other end of the limit part 5 away from the nut 3, the radius of the limit part 5 is equal to the radius of the first mounting hole 11, the radius of the thread part 6 is equal to the radius of the third mounting hole 13, and the radius of the limit part 5 is larger than the radius of the thread part 6.

Since the radius of the limiting part 5 is equal to the radius of the first mounting hole 11 and the third mounting hole 13, the radius of the limiting part 5 is larger than the radius of the second mounting hole 13, so that the limiting part 5 can be closely attached to the top of the second mounting hole 13 of the lower housing 9 after passing through the first mounting hole 11 and the third mounting hole 13. While the radius of the threaded portion 6 is equal to the radius of the second mounting hole 12, which enables the threaded portion 6 to be coupled with the nut 10 through the lower housing 9. After installation, since the height of the limiting portion 5 is smaller than the height of the sealing gasket 8, the pressing ring 4 of the self-limiting bolt 1 can compress the thickness of the sealing gasket 8 to the length of the limiting portion 5 of the self-limiting bolt 1 after the self-limiting bolt 1 and the nut 10 are combined downwards along with the screw of the self-limiting bolt 1 and the nut 10 to finish sealing along with the descending of the height of the threaded portion 6 after installation, and the overall structure schematic diagram after installation is shown in fig. 4.

In one embodiment of the present utility model, in order to increase the friction between the nut 10 and the lower housing 9 while limiting the position of the nut 10 on the lower housing 9, as shown in fig. 1 and 2, the bottom of the second mounting hole 12 may be provided with an annular groove 14. Accordingly, the inner edge of the top of the nut 10 may be provided with an annular protrusion 15 for co-operating with the annular groove 14 for limiting. The annular groove 14 and the annular bulge 15 are matched in a limiting mode, so that on one hand, the position of the nut 10 on the lower shell 9 can be accurately positioned, and on the other hand, the relative stability between the annular groove and the annular bulge can be improved.

In one embodiment of the present utility model, the shape of the nut 3 of the self-limiting bolt 1 may be various shapes known to those skilled in the art, such as a regular triangular prism, etc., and the shape of the nut 3 of the self-limiting bolt 1 may be a regular hexagonal prism for convenience of forced tightening.

In one embodiment of the present utility model, in order to ensure that the gasket 8 is not damaged during the rotation of the self-limiting bolt 1, and to reduce the gap between the limiting portion 5 and the gasket 8, the limiting portion 5 may be a polish rod cylinder.

In one embodiment of the utility model, the bottom of the screw cap 3 may be provided with a pressing ring 4 in order to increase the pressing effect of the screw cap 3 on the upper cover plate 7.

In one embodiment of the present utility model, the material for the gasket 8 may be a variety of elastic materials known to those skilled in the art. In one example of the utility model, the gasket 8 may be a foamed silicone material or a silicone rubber. In addition, in the case where the gasket 8 is a foamed silicone material, the thickness of the gasket 8 may be 1x, where x is a unit length. In the case where the gasket 8 is a silicone rubber material, the thickness of the gasket 8 may be 2x.

The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the simple modifications belong to the protection scope of the present utility model. In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.

Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.

Claims

1. The utility model provides a self-limiting bolt seal structure which characterized in that includes:

the upper cover body (7), the upper cover body (7) is provided with a first mounting hole (11);

a lower shell (9), wherein a second mounting hole (12) is formed in the lower shell (9), and the radius of the second mounting hole (12) is equal to that of the first mounting hole (11);

a sealing gasket (8) arranged between the upper cover body (7) and the lower shell (9), wherein a third mounting hole (13) is formed in the sealing gasket (8);

a nut (10);

from spacing bolt (1), be used for with first mounting hole (11), second mounting hole (12) and third mounting hole (13) cooperation, in order to install upper cover body (7), lower casing (9), sealed pad (8) and nut (10), just from spacing bolt (1) including nut (3) and nail post (2), nail post (2) include spacing portion (5) and screw thread portion (6), spacing portion (5) with nut (3) are connected, screw thread portion (6) with spacing portion (5) are kept away from the other end of nut (3) is connected, the radius of spacing portion (5) equals the radius of first mounting hole (11), the radius of screw thread portion (6) equals the radius of third mounting hole (13), the radius of spacing portion (5) is greater than the radius of screw thread portion (6).

2. The sealing structure according to claim 1, characterized in that the bottom edge of the second mounting hole (12) is provided with an annular groove (14);

the inner edge of the top of the nut (10) is provided with an annular protrusion (15) for being matched with the annular groove (14) for limiting.

3. The sealing structure according to claim 1, characterized in that the screw cap (3) is a straight hexagonal prism.

4. The sealing structure according to claim 1, characterized in that the limit part (5) is in the shape of a polish rod cylinder.

5. A sealing arrangement according to claim 3, characterized in that the bottom of the hexagonal-prism-shaped screw cap (3) is provided with a clamping ring (4).

6. The sealing structure according to claim 1, characterized in that the gasket (8) is a foamed silicone material or a silicone rubber.

7. The sealing structure according to claim 5, characterized in that in case the sealing gasket (8) is a foamed silicone material, the thickness of the sealing gasket (8) is 1x, wherein x is the unit length.

8. The sealing structure according to claim 5, characterized in that in case the gasket (8) is of a silicone rubber material, the thickness of the gasket (8) is 2x, where x is the unit length.