CN213655402U

CN213655402U - Waterproof screw

Info

Publication number: CN213655402U
Application number: CN202021762895.XU
Authority: CN
Inventors: 罗意; 袁涛; 危棋
Original assignee: Hunan Haibo Ruide Electronic Intelligence Control Technology Co ltd
Current assignee: Hunan Haibo Ruide Electronic Intelligence Control Technology Co ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-07-09
Anticipated expiration: 2030-08-21

Abstract

The utility model provides a waterproof screw, spacing ring including bolt, sealing washer and metal material, bolt include head and screw rod, and sealing washer and spacing ring are the annular, and sealing washer detachable cup joints outside the screw rod, are equipped with the protrusion on the terminal surface of sealing washer the first arch of annular of terminal surface, first arch and sealing washer common center line, first bellied internal diameter equal the internal diameter of sealing washer, when waterproof screw installs on the part, the medial surface and the first bellied medial surface laminating screw rod of sealing washer, the terminal surface of the first bellied terminal surface laminating head of the nothing of sealing washer, the laminating of the terminal surface that has of sealing washer have first bellied terminal surface the part, first arch are inserted in on the part and screw rod complex screw, the lateral surface at the sealing washer is cup jointed to the spacing ring. The screw of the utility model has the functions of water resistance, fastening and sealing, and is generally used in occasions needing water resistance and a sealed shell; the limiting ring made of metal materials can limit the compression amount of the sealing ring and prevent the sealing ring from being compressed excessively to lose efficacy.

Description

Waterproof screw

Technical Field

The utility model relates to a screw technical field specifically is a waterproof screw.

Background

When the conventional screw is installed on a component, a screw rod of the conventional screw penetrates through a screw hole on the component, water seepage easily occurs after installation, and water enters the component through screw threads, steel plate gaps and the like, so that the service performance and the service life of the component are influenced. In the prior art, for example, for parts with waterproof requirements, waterproof measures are additionally added, such as a waterproof tight ring is arranged at the interface of a conventional screw and the part. However, many of the existing external waterproof sealing rings have unsatisfactory waterproof effect, for example, the waterproof sealing ring fails due to excessive compression, which results in failure of waterproof effect.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model aims to provide a waterproof screw which has the functions of water resistance, fastening and sealing and is generally used in occasions needing water resistance and a sealed shell; the limiting ring made of metal can limit the compression amount of the sealing ring and prevent the sealing ring from being compressed excessively to lose efficacy; the sealing ring, the first bulge and the second bulge fill the gap, so that effective water proofing is realized; simple structure, convenient and fast operation and low cost.

In order to realize the purpose, the utility model discloses the technical scheme who adopts is:

the utility model provides a waterproof screw, includes the spacing ring of bolt, sealing washer and metal material, and the bolt includes head and screw rod, and sealing washer and spacing ring are the annular, and sealing washer detachable cup joints outside the screw rod, is equipped with the protrusion on the terminal surface of sealing washer the annular first arch of terminal surface, first arch and sealing washer common center line, first bellied internal diameter equal the internal diameter of sealing washer, and first bellied external diameter is less than the external diameter of sealing washer, when waterproof screw installs on the part, the medial surface and the first bellied medial surface laminating screw rod of sealing washer, the terminal surface of the no first bellied terminal surface laminating head of sealing washer, the laminating of the terminal surface that has first bellied of sealing washer part, first arch insert in the screw rod complex screw on the part, the spacing ring cup joints the lateral surface at the sealing washer.

As a further improvement of the above technical solution:

the outer side face of the first protrusion is attached to the hole wall of the screw hole.

The spacing ring is connected with the head integrally.

The stop collar is not connected to the head.

Be equipped with the protrusion on the lateral surface of sealing washer the annular second of lateral surface is protruding, and the second is protruding and the sealing washer is central line altogether, the bellied terminal surface of second and the first bellied terminal surface parallel and level of no of sealing washer, when waterproof screw installs on the part, a terminal surface of the bellied another terminal surface laminating spacing ring of second.

The end face of the limiting ring, which is far away from the second bulge, is attached to the component.

Evenly be equipped with a plurality of spacing grooves on the medial surface of spacing ring, evenly be equipped with a plurality of stoppers on the lateral surface of sealing washer, a plurality of spacing grooves cooperate with a plurality of stoppers respectively.

The middle part of sealing washer lateral surface is equipped with the round recess along the circumferencial direction, and the stopper is established in the recess bottom, and the top of stopper does not bulge the sealing washer lateral surface along axial both ends, and the middle part of spacing ring medial surface is equipped with the spacing groove seat of the protruding medial surface of round along the circumferencial direction, and a plurality of spacing grooves are seted up on spacing groove seat evenly at an interval.

Compared with the prior art, the beneficial effects of the utility model are that: the screw has waterproof and fastening sealing functions, is universal in occasions needing waterproof and sealed shells, and overcomes the problem that a conventional screw needs additional waterproof measures in waterproof occasions; the limiting ring made of metal can limit the compression amount of the sealing ring and prevent the sealing ring from being compressed excessively to lose efficacy; the sealing ring, the first bulge and the second bulge fill the gap, so that water cannot permeate, and effective water prevention is realized; simple structure, convenient and fast operation and low cost.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

fig. 2 is a schematic structural view of a separation state of a seal ring and a limit ring according to a first embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a component mounted thereon according to an embodiment of the present invention;

fig. 4 is an enlarged schematic view of a partial structure of a first embodiment of the present invention;

fig. 5 is a schematic cross-sectional view of a second embodiment of the present invention mounted on a component;

fig. 6 is an enlarged schematic view of a partial structure of a second embodiment of the present invention;

fig. 7 is a schematic view of a sleeve structure of a seal ring and a limiting ring according to a second embodiment of the present invention;

fig. 8 is a schematic structural view of a limiting ring and a limiting groove of the second embodiment of the present invention;

fig. 9 is the second embodiment of the present invention, which shows the structure of the sealing ring and the limiting block.

Detailed Description

The treatment system for removing sulfate from mine water provided by the invention is further described in detail and completely by combining the embodiment. The following examples are illustrative only and are not to be construed as limiting the invention.

When the waterproof screw is mounted on the member 4, the threaded rod 12 passes through the threaded hole in the member 4.

Example one

A waterproof screw is shown in figures 1-4 and comprises a bolt, a sealing ring 2 and a metal limiting ring 3.

The bolt comprises a head 11 and a shank 12. The head 11 and the screw 12 are integrally connected. The screw 12 is vertically connected to an end surface of the head 11.

The limiting ring 3 is annular, and the inner diameter of the limiting ring 3 is larger than the diameter of the screw 12. The limiting ring 3 and the head 11 are integrally connected, and the limiting ring 3 and the screw 12 share the same center line. Preferably, one end face of the spacing ring 3 is connected with the end face of the connecting screw 12 of the head 11,

the sealing ring 2 is annular, and the sealing ring 2 is detachably sleeved outside the screw 12. The inner diameter of the seal ring 2 is not larger than the diameter of the screw 12. The outer diameter of the sealing ring 2 is not less than the inner diameter of the limiting ring 3. Specifically, when the inner diameter of the seal ring 2 is slightly smaller than the diameter of the screw 12, the seal ring 2 can be tightly sleeved on the screw 12. When the outer diameter of the sealing ring 2 is slightly larger than the inner diameter of the limiting ring 3, the sealing ring 2 can be tightly sleeved in the limiting ring 3. The thickness of the limiting ring 3 is the same as that of the sealing ring 2.

An annular first bulge 21 protruding from the end face is arranged on one end face of the sealing ring 2, and the first bulge 21 and the sealing ring 2 are concentric. The inner diameter of the first protrusion 21 is equal to the inner diameter of the sealing ring 2, i.e. the inner side of the first protrusion 21 is flush with the inner side of the sealing ring 2. The outer diameter of the first bulge 21 is smaller than that of the sealing ring 2, and the outer diameter of the first bulge 21 is not smaller than the hole diameter of the screw hole.

The utility model discloses a theory of operation does: when the waterproof screw is installed on the component 4, the inner side surface of the sealing ring 2 and the inner side surface of the first bulge 21 are attached to the outer side surface of the screw rod 12. The end face of the sealing ring 2 without the first protrusion 21 abuts against the end face of the head 11, in particular against the end face of the connecting screw 12 of the head 11. The end face of the sealing ring 2 with the first protrusion 21 abuts the component 4. The first protrusion 21 is inserted into the screw hole, and the outer side surface of the first protrusion 21 is attached to the hole wall of the screw hole. The outer side surface of the sealing ring 2 is attached to the inner side surface of the limiting ring 3, in other words, the limiting ring 3 is sleeved on the outer side surface of the sealing ring 2. The end face of the limit ring 3 far away from the head 11 is attached to the component 4, namely, the end face of the limit ring 3 far away from the head 11 is flush with the end face of the seal ring 2 with the first protrusion 21. In this way, the connection of the screw and the component 4 is effectively watertight.

Example two

Unlike the first embodiment, the stop collar 3 and the head 11 are not connected, or the stop collar 3 and the head 11 are independent of each other.

As shown in fig. 5 to 9, in the present embodiment, an annular second protrusion 22 protruding from the outer side surface is provided on the outer side surface of the seal ring 2 along the circumferential direction of the seal ring 2, and the second protrusion 22 and the seal ring 2 are concentric. One end face of the second bulge 22 is flush with the end face of the sealing ring 2 without the first bulge 21, and the distance from the other end face of the second bulge 22 to the end face of the sealing ring 2 with the first bulge 21 is equal to the thickness of the limiting ring 3. In other words, when the waterproof screw is installed on the component 4, the other end surface of the second protrusion 22 is attached to one end surface of the stop collar 3, and the end surface of the stop collar 3 away from the second protrusion 22 is attached to the component 4, that is, the end surface of the stop collar 3 away from the second protrusion 22 is flush with the end surface of the seal ring 2 having the first protrusion 21.

In this embodiment, be equipped with a plurality of spacing grooves along the even interval of circumferencial direction on the medial surface of spacing ring 3, evenly be equipped with a plurality of stoppers along the circumferencial direction on the lateral surface of sealing washer 2, when spacing ring 3 cup joints in sealing washer 2 outsidely, a plurality of spacing grooves cooperate with a plurality of stoppers respectively, make the connection of spacing ring 3 and sealing washer 2 inseparabler and firm.

Preferably, the middle part of the outer side surface of the sealing ring 2 is provided with a circle of groove along the circumferential direction, namely, in the axial direction of the sealing ring 2, the two ends of the outer side surface of the sealing ring 2 are high, and the middle part is low. The stopper is established at the recess bottom, and the stopper protrudes recess bottom promptly, and the top of stopper does not protrude 2 lateral surfaces of sealing washer along axial both ends.

Correspondingly, the middle part of the inner side surface of the limit ring 3 is provided with a circle of limit groove seat protruding out of the inner side surface along the circumferential direction, namely, in the axial direction of the limit ring 3, two ends of the inner side surface of the limit ring 3 are low, and the middle of the inner side surface of the limit ring is high. The plurality of limiting grooves are uniformly arranged on the limiting groove seat at intervals. Preferably, the limiting groove is arc-shaped.

The sealing ring 2 is generally made of rubber and has certain elasticity, so that the sealing ring 2 can be sleeved into the limiting ring 3 and a plurality of limiting blocks and limiting grooves are matched, and after the sealing ring 2 is sleeved into the limiting ring 3, two ends of the sealing ring 2 are flush with and sealed with two ends of the limiting ring 3 respectively.

Finally, it must be said here that: the above embodiments are only used for further detailed description of the technical solutions of the present invention, and should not be understood as limiting the scope of the present invention, and the modifications and adjustments made by those skilled in the art according to the above-mentioned contents of the present invention are all included in the scope of the present invention.

Claims

1. The utility model provides a waterproof screw, its characterized in that, spacing ring (3) including bolt, sealing washer (2) and metal material, the bolt includes head (11) and screw rod (12), and sealing washer (2) and spacing ring (3) are the annular, and sealing washer (2) detachable cup joints outside screw rod (12), is equipped with the protrusion on the terminal surface of sealing washer (2) the annular first arch (21) of terminal surface, first arch (21) and sealing washer (2) concentric line, the internal diameter of first arch (21) equals the internal diameter of sealing washer (2), and the external diameter of first arch (21) is less than the external diameter of sealing washer (2), when waterproof screw installs on part (4), the medial surface of sealing washer (2) and the medial surface laminating screw rod (12) of first arch (21), the terminal surface laminating head (11) of the no first arch (21) of sealing washer (2), the terminal surface laminating screw rod (12) of sealing washer (2) The end face of the sealing ring (2) with the first protrusion (21) is attached to the component (4), the first protrusion (21) is inserted into a screw hole which is formed in the component (4) and matched with the screw rod (12), and the limiting ring (3) is sleeved on the outer side face of the sealing ring (2).

2. The waterproof screw according to claim 1, characterized in that: the outer side surface of the first protrusion (21) is attached to the hole wall of the screw hole.

3. The waterproof screw according to claim 1, characterized in that: the limiting ring (3) and the head (11) are integrally connected.

4. The waterproof screw according to claim 1, characterized in that: the limiting ring (3) is not connected with the head (11).

5. The waterproof screw according to claim 4, characterized in that: be equipped with the protrusion on the lateral surface of sealing washer (2) the annular second of lateral surface is protruding (22), and the second is protruding (22) and sealing washer (2) concentric line, the terminal surface parallel and level of the first arch (21) of the no of terminal surface of the protruding (22) of second and sealing washer (2), when waterproof screw installs on part (4), another terminal surface laminating stop collar (3) of the protruding (22) of second.

6. The waterproof screw according to claim 5, characterized in that: the end face of the limiting ring (3) far away from the second bulge (22) is attached to the component (4).

7. The waterproof screw according to claim 3 or 4, characterized in that: evenly be equipped with a plurality of spacing grooves on the medial surface of spacing ring (3), evenly be equipped with a plurality of stoppers on the lateral surface of sealing washer (2), a plurality of spacing grooves respectively with a plurality of stopper cooperation.

8. The waterproof screw according to claim 7, characterized in that: the middle part of sealing washer (2) lateral surface is equipped with the round recess along the circumferencial direction, and the stopper is established in the recess bottom, and the top of stopper does not bulge sealing washer (2) lateral surface along axial both ends, and the middle part of spacing ring (3) medial surface is equipped with the spacing groove seat of the protruding medial surface of round along the circumferencial direction, and a plurality of spacing grooves are seted up on spacing groove seat evenly at an interval.