CN216642728U

CN216642728U - High leakproofness threaded fastener

Info

Publication number: CN216642728U
Application number: CN202123003216.8U
Authority: CN
Inventors: 廖洪波
Original assignee: Kunshan Zhonggu Precision Hardware Co ltd
Current assignee: Kunshan Zhonggu Precision Hardware Co ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-05-31
Anticipated expiration: 2031-12-02

Abstract

The utility model discloses a high-tightness threaded fastener, which relates to the field of hardware and comprises a bolt and a nut, wherein one end of the surface of the bolt is in threaded connection with the nut, the surface of the bolt is movably sleeved with an upper rubber sleeve, one end of the upper rubber sleeve, which is close to the nut, is provided with a lower rubber sleeve, the inner wall surface of the upper rubber sleeve is provided with an upper internal thread, the outer wall surface of the lower rubber sleeve is provided with a lower external thread, the upper internal thread is meshed with the lower external thread, the inner wall of the lower rubber sleeve is provided with a lower internal thread, the inner wall of the lower rubber sleeve is in threaded connection with the bolt through the lower internal thread, the outer wall surface of the upper rubber sleeve is provided with an upper external thread, and one end, which is far away from the nut, of the upper rubber sleeve is integrally formed with an upper rubber pad; this is novel when fastening the object with solving current threaded fastener, presss from both sides tight sealed effect of realization through end cap and nut to sealed the pad, and not only sealed effect is not good, and the nut is reducing sealed tight of clamp of pad after becoming flexible, and sealed pad will thoroughly lose the problem of sealed effect.

Description

High leakproofness threaded fastener

Technical Field

The utility model relates to the field of hardware, in particular to a high-sealing threaded fastener.

Background

The bolt is a mechanical part and is a cylindrical threaded fastener matched with a nut. A fastener consisting of a head part and a screw (a cylinder with external threads) needs to be matched with a nut and is used for fastening and connecting two parts with through holes. This form of connection is known as a bolted connection. If the nut is unscrewed from the bolt, the two parts can be separated, so that the bolt connection belongs to detachable connection.

When fastening the object, current threaded fastener presss from both sides tight sealed effect of realization through end cap and nut to sealed the pad, not only sealed effect is not good, and the nut is tight the reducing to sealed tight of pad clamp after becoming flexible, and sealed pad will thoroughly lose sealed effect, and we propose a high leakproofness threaded fastener for this reason to in order to solve the above-mentioned problem that proposes.

SUMMERY OF THE UTILITY MODEL

For solving above-mentioned technical problem, provide and a high leakproofness threaded fastener, this technical scheme has solved current threaded fastener and when fastening the object, presss from both sides tight sealed effect of realization through end cap and nut to sealed the pad, and not only sealed effect is not good, and the nut is in the tight reduction of clamp to sealed pad after becoming flexible, and sealed pad will thoroughly lose the problem of sealed effect.

In order to achieve the above purposes, the technical scheme adopted by the utility model is as follows:

the utility model provides a high leakproofness threaded fastener, includes bolt and nut, bolt surface one end threaded connection has the nut, bolt surface activity cover is equipped with the gum cover, the gum cover is close to nut one end and is equipped with down the gum cover, go up gum cover inner wall surface and seted up the internal thread, external screw thread has been seted up down on gum cover outer wall surface down, it links to each other with external screw thread meshing down to go up the internal thread, the internal thread has been seted up down to the gum cover inner wall down, the gum cover inner wall links to each other with the bolt screw thread through internal thread down.

As a preferred technical scheme of the utility model, the outer wall surface of the upper sizing sleeve is provided with an upper external thread.

As a preferred technical scheme of the utility model, one end of the upper rubber sleeve, which is far away from the nut, is integrally formed with an upper rubber pad, one side surface of the upper rubber pad is provided with an upper limiting ring, and the inner side surface of the end cap of the bolt is provided with an upper limiting groove.

As a preferred technical scheme of the utility model, the upper rubber sleeve is in threaded insertion connection with the lower rubber sleeve, a lower rubber pad is integrally formed at one end of the lower rubber sleeve close to the screw cap, a lower limiting ring is arranged on one side surface of the lower rubber pad, and a lower limiting groove is formed in the inner side surface of the screw cap.

As a preferable technical solution of the present invention, the upper limit groove and the upper limit ring are engaged with each other, and the lower limit groove and the lower limit ring are engaged with each other.

As a preferable technical scheme of the utility model, a limiting washer is integrally formed on the surface of one side, close to the lower rubber sleeve, of the lower rubber pad.

Compared with the prior art, the utility model has the beneficial effects that: outer screw thread links to each other with the mounting hole screw thread on the rubberizing cover outer wall accessible, lower gum cover passes through outer wall surface external screw thread and links to each other with the last internal screw thread of rubberizing cover inner wall down, thereby can realize the concatenation of rubberizing cover and lower gum cover, limit washer's diameter is the same with the mounting hole internal diameter, lower gum cover inserts accessible limit washer behind the mounting hole inner chamber and carries on spacingly, avoid lower gum cover to take place to rock in the mounting hole inner chamber, seal mounting hole inner chamber both ends through rubberizing cover and limit washer simultaneously, and can promote the sealed effect of fastening department, when the nut takes place to become flexible in the use, because rubberizing cover and lower gum cover still are in the same place through last internal thread and lower external screw thread connection, still can guarantee the sealed effect of fastening department.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic view of the structure of the glue applying sleeve of the present invention;

fig. 4 is a schematic view of the structure of the present novel adhesive cover.

The reference numbers in the figures are:

1. a bolt; 101. a nut;

2. gluing a rubber sleeve; 201. gluing a rubber mat; 202. an upper limiting ring; 203. an upper limiting groove; 204. an upper internal thread; 205. external threads are arranged;

3. a rubber sleeve is arranged; 301. a lower rubber cushion; 302. a lower limit ring; 303. a lower limiting groove; 304. a lower internal thread; 305. a lower external thread; 306. spacing packing ring.

Detailed Description

The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

Referring to fig. 1-4, a high-tightness threaded fastener, a bolt 1 and a nut 101, wherein one end of the surface of the bolt 1 is in threaded connection with the nut 101, the surface of the bolt 1 is movably sleeved with an upper rubber sleeve 2, one end of the upper rubber sleeve 2, which is close to the nut 101, is provided with a lower rubber sleeve 3, the inner wall of the upper rubber sleeve 2 is provided with an upper internal thread 204, the outer wall of the lower rubber sleeve 3 is provided with a lower external thread 305, the upper internal thread 204 is meshed with the lower external thread 305, the inner wall of the lower rubber sleeve 3 is provided with a lower internal thread 304, the inner wall of the lower rubber sleeve 3 is in threaded connection with the bolt 1 through the lower internal thread 304, the outer wall of the upper rubber sleeve 2 is provided with an upper external thread 205, the joint of the lower rubber sleeve 3 and the lower rubber pad 301 is provided with a limit washer 306, the upper rubber sleeve 2 and the lower rubber sleeve 3 are sleeved on the surface of the bolt 1, the bolt 1 is rotated, the outer wall of the upper rubber sleeve 2 is in threaded connection with the mounting hole through the upper external thread 205, the nut 101 is rotated, the inner side of the nut 101 can drive the lower rubber pad 301 to rotate under the effect of friction force, lower gum cover 3 is through outer wall surface lower external screw thread 305 with last internal screw thread 204 screw thread of last gum cover 2 inner wall continuous, thereby can realize 2 and 3 concatenations of lower gum cover, limit washer 306's diameter is the same with the mounting hole internal diameter, lower gum cover 3 injects accessible limit washer 306 behind the mounting hole inner chamber and carries on spacingly, avoid down gum cover 3 take place to rock in the mounting hole inner chamber, seal mounting hole inner chamber both ends through last gum cover 2 and limit washer 306 simultaneously, and can promote the sealed effect of fastening department, when nut 101 takes place to become flexible in the use, because last gum cover 2 and lower gum cover 3 still link together through last internal screw thread 204 and lower external screw thread 305, still can guarantee the sealed effect of fastening department.

Referring to fig. 1 and 2, an upper rubber pad 201 is integrally formed at one end of an upper rubber sleeve 2 far away from a nut 101, an upper limiting ring 202 is arranged on one side surface of the upper rubber pad 201, an upper limiting groove 203 is formed on the inner side surface of an end cap of a bolt 1, the upper rubber sleeve 2 is connected with a lower rubber sleeve 3 in a threaded insertion mode, a lower rubber pad 301 is integrally formed at one end of the lower rubber sleeve 3 near the nut 101, a lower limiting ring 302 is arranged on one side surface of the lower rubber pad 301, a lower limiting groove 303 is formed on the inner side surface of the nut 101, the upper limiting groove 203 is matched with the upper limiting ring 202, the lower limiting groove 303 is matched with the lower limiting ring 302, the lower rubber pad 301 is clamped with the upper rubber pad 201 through the nut 101 and the end cap of the bolt 1 respectively, the upper limiting ring 202 is clamped with the upper limiting groove 203, the lower limiting ring 302 is clamped with the lower limiting groove 303, the lower rubber pad 301 is clamped with the upper rubber pad 201, and the bolt 1 and the joint of the inner wall of the clamping piece 101 and the surface of the clamping piece can be sealed through the lower rubber pad 301 and the upper rubber pad 201 And (6) sealing.

When in use, the nut 101 is rotated, the lower rubber pad 301 and the upper rubber pad 201 are respectively clamped through the nut 101 and the end cap of the bolt 1, the upper limit ring 202 is clamped with the upper limit groove 203, the lower limit ring 302 is clamped with the lower limit groove 303, the lower rubber pad 301 and the upper rubber pad 201 are clamped, the connection between the end cap of the bolt 1 and the inner wall of the nut 101 and the surface of a clamping piece can be sealed through the lower rubber pad 301 and the upper rubber pad 201, the outer wall of the upper rubber sleeve 2 can be in threaded connection with the mounting hole through the upper external thread 205, the lower rubber sleeve 3 is in threaded connection with the upper internal thread 204 of the inner wall of the upper rubber sleeve 2 through the lower external thread 305 on the outer wall surface, the two ends of the inner cavity of the mounting hole are sealed through the upper rubber sleeve 2 and the limit gasket 306, the sealing effect of the fastening position can be improved, when the nut 101 is loosened in use, because the upper rubber sleeve 2 and the lower rubber sleeve 3 are still connected together through the upper internal thread 204 and the lower external thread 305, the sealing effect of the fastening is still ensured.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a high leakproofness threaded fastener, includes bolt (1) and nut (101), bolt (1) surperficial one end threaded connection has nut (101), its characterized in that: bolt (1) surface activity cover is equipped with gum cover (2), it is equipped with down gum cover (3) to go up gum cover (2) and be close to nut (101) one end, go up gum cover (2) inner wall surface and seted up interior thread (204), external screw thread (305) have been seted up down on gum cover (3) outer wall surface down, it links to each other with external screw thread (305) meshing down to go up interior thread (204), interior thread (304) have been seted up down to gum cover (3) inner wall down, gum cover (3) inner wall links to each other with bolt (1) screw thread through interior thread (304) down.

2. The high-sealability threaded fastener according to claim 1, wherein: an upper external thread (205) is arranged on the surface of the outer wall of the upper rubber sleeve (2).

3. The high-sealability threaded fastener according to claim 1, wherein: go up gum cover (2) and keep away from one end integrated into one piece of nut (101) and have last cushion (201), go up cushion (201) one side surface and be equipped with spacing ring (202) on, spacing groove (203) have been seted up on the end cap inside surface of bolt (1).

4. A high-sealability threaded fastener according to claim 3, wherein: go up gum cover (2) and link to each other with gum cover (3) screw thread grafting down, gum cover (3) are close to the one end integrated into one piece of nut (101) down and have rubber mat (301), rubber mat (301) one side surface is equipped with down spacing ring (302) down, spacing groove (303) down have been seted up to the inboard surface of nut (101).

5. The high-sealability threaded fastener according to claim 4, wherein: the upper limiting groove (203) is matched with the upper limiting ring (202), and the lower limiting groove (303) is matched with the lower limiting ring (302).

6. The high-sealability threaded fastener according to claim 4, wherein: and a limiting washer (306) is integrally formed on the surface of one side, close to the lower rubber sleeve (3), of the lower rubber pad (301).