CN216111698U - Waterproof structure of screw locking connecting piece - Google Patents

Abstract

The utility model discloses a waterproof structure of a screw locking connecting piece. The waterproof device comprises a shell, a part, a waterproof ring and a screw of the product, wherein the screw penetrates through the shell to screw the part, and after the screw is screwed down, the shell and the part compress the waterproof ring to seal the inner cavity of the product; a gap is formed between the shell and the contact surface of the part, and the connecting screw penetrates through the sealing cavity of the shell and is communicated with the gap between the shell and the contact surface of the part to cause water leakage; the screw thread department of part is installed flutedly for place waterproof circle, when the screw connection casing with the part, compressed waterproof circle and played sealed waterproof effect. The structure of the utility model can lead the sealing cavity penetrated by the connecting screw to be sealed and waterproof, thus leading the waterproof sealing design of the three-proofing product to be more compact.

Description

Waterproof structure of screw locking connecting piece

Technical Field

The utility model belongs to the technical field of water prevention, and particularly relates to a waterproof structure of a screw locking connecting piece.

Background

At present, a waterproof structure is designed for general three-proofing products, so that the three-proofing requirements of the products are ensured; however, the screw for fastening the connection sometimes penetrates the housing, so that the position of the screw is not waterproof; in the prior art, the waterproof form of the position of the connecting screw is designed, and the following modes can be provided: 1. directly coating glue around the screw head for sealing and waterproofing; the disadvantage is inconvenient disassembly; as shown in fig. 1; 2. the waterproof rubber ring is sleeved on the screw, and the rubber ring is tightly pressed to prevent water when the screw is screwed; the defects are that the locking force of the screw is not easy to control, and the rubber ring is easy to damage; as shown in fig. 2; 3. the screw position is designed outside the closed cavity, but the disadvantage is that the screw position cannot be realized when the structural size cannot be arranged. Therefore, how to solve the above problems becomes a matter of thought for the technicians.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the present invention provides a waterproof structure of a screw locking connection member.

The technical scheme of the utility model is as follows: a waterproof structure of a screw locking connecting piece comprises a part (3) and a shell (4) used for installing the part (3),

screw holes are formed in the part (3) and the shell (4), and screws (1) used for connecting the part (3) and the shell (4) are arranged in the screw holes.

Furthermore, the contact surface of the joint of the part (3) and the shell (4) through the screw (1) is a plane,

a clamping groove structure used for limiting the part (3) is arranged on a shell (4) connected with the part (3) through a screw (1).

Furthermore, threads are formed on the inner walls of the part (3) and the shell (4), a groove is formed in the thread formed on the part (3), and a waterproof ring (2) is arranged in the groove.

Further, the relationship between the size of the groove on the part (3) and the wire diameter of the waterproof ring (2) is as follows: the sectional area of the groove is slightly larger than that of the waterproof ring (2), and the depth of the concave pit is smaller than the wire diameter of the waterproof ring (2);

namely the relationship between the size of the groove and the wire diameter size of the waterproof ring (2): l is not less than H and not less than pi D²/4，H<D。

Furthermore, a gap (5) is arranged between the shell (4) and the part (3).

Further, a sealed cavity (6) is arranged at the other end of the shell (4).

The utility model has the beneficial effects that: the structure of the utility model can lead the sealing cavity penetrated by the connecting screw to be sealed and waterproof, thus leading the waterproof sealing design of the three-proofing product to be more compact.

Drawings

FIG. 1 is a schematic view of the prior art with glue applied directly around the screw head to seal and prevent water;

FIG. 2 is a schematic view of a prior art screw with a waterproof rubber ring sleeved on the screw and a rubber ring pressed tightly to prevent water when the screw is screwed;

FIG. 3 is a schematic structural view of the present invention;

FIG. 4 is an enlarged schematic illustration of FIG. 3;

in the figure, 11 is a circle of the screw head, and 22 is a waterproof rubber ring;

1 is a screw, 2 is a waterproof ring, 3 is a part, 4 is a shell, 5 is a gap, and 6 is a sealing cavity.

Detailed Description

In order to more clearly illustrate the technical solution of the present invention, the following detailed description is made with reference to the accompanying drawings:

as depicted in fig. 1; the head of the screw is directly coated with glue for a circle 11 to seal and prevent water;

as depicted in fig. 2; the screw 1 is sleeved with a waterproof rubber ring 22, and the waterproof rubber ring 22 is tightly pressed to prevent water when the screw 1 is screwed;

as described in fig. 3-4; the waterproof structure of the screw locking connecting piece comprises a part 3 and a shell 4 for mounting the part 3, wherein the shell 4 is used for mounting the part 3;

screw holes are formed in the part 3 and the shell 4, and screws 1 used for connecting the part 3 and the shell 4 are arranged in the screw holes; the screw 1 is used for connecting a component 3 and a housing 4.

Furthermore, the contact surface of the part 3 and the shell 4 at the joint through the screw 1 is a plane,

a clamping groove structure for limiting the part 3 is arranged on a shell 4 connected with the part 3 through a screw 1 (the plane on the shell 4 is provided with the clamping groove structure for limiting the part 3); the function of the connecting device is to ensure that the part 3 is firmly and reliably connected with the shell 4.

Furthermore, the inner wall of the joint of the part 3 and the shell 4 is provided with threads, the thread part provided on the part 3 is provided with a groove, and the inside of the groove is provided with a waterproof ring 2; after the screw 1 is tightened from the shell 4, the shell 4 compresses the waterproof ring 2 with the part 1 to play a waterproof role.

Further, the relationship between the size of the groove on the part 3 and the wire diameter of the waterproof ring 2 is as follows: the sectional area of the groove is slightly larger than that of the waterproof ring 2, and the depth of the concave pit is smaller than the wire diameter of the waterproof ring 2;

namely, the relationship between the size (length L, depth H) of the groove and the wire diameter size (D) of the rubber ring:

L*H≥πD²/4，H<d; as shown with reference to the enlarged view of fig. 4.

Further, a gap 5 is provided between the housing 4 and the component 3.

Further, a sealed chamber 6 is provided at the other end of the housing 4.

Concretely, a waterproof construction of screw locking connecting piece, this kind of structure includes casing 4, part 3, waterproof circle 2 and the screw 1 of product, and screw 1 passes casing 4 and screws up part 3, screws up behind the screw 1, and casing 4 compresses tightly waterproof circle 2 sealed product inner chamber (seal chamber 6) with part 3.

A gap 5 is formed between the shell 4 and the contact surface of the part 3, the connecting screw 1 penetrates through the sealing cavity 6 of the shell 4 and is communicated with the shell 4 and the gap 5 of the contact surface of the part 3, and water leakage is caused; a groove is formed in the thread of the part 3 and used for placing the waterproof ring 2, and when the screw 1 is connected with the shell 4 and the part 3, the waterproof ring 2 is compressed to play a role in sealing and waterproofing; said parts3, the size of the groove has the following relation with the wire diameter of the waterproof ring 2: the sectional area of the groove is slightly larger than that of the waterproof ring 2, and the depth of the groove is smaller than the wire diameter of the waterproof ring 2; namely, the dimensions (length L, depth H) of the groove are related to the wire diameter dimension (D) of the waterproof ring 2: l is not less than H and not less than pi D²/4，H<D。

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims (6)

1. A waterproof structure of a screw locking connecting piece is characterized by comprising a part (3) and a shell (4) for mounting the part (3),

screw holes are formed in the part (3) and the shell (4), and screws (1) used for connecting the part (3) and the shell (4) are arranged in the screw holes.

2. The waterproof structure of a screw locking connection member according to claim 1, wherein the contact surface of the part (3) and the housing (4) at the connection position by the screw (1) is a plane,

a clamping groove structure used for limiting the part (3) is arranged on a shell (4) connected with the part (3) through a screw (1).

3. The waterproof structure of a screw locking connector according to claim 1, wherein threads are formed on the inner walls of the part (3) and the housing (4), a groove is formed at the thread formed on the part (3), and a waterproof ring (2) is arranged inside the groove.

4. The waterproof structure of a screw-locking connecting member according to claim 3,

the relationship between the size of the groove on the part (3) and the wire diameter of the waterproof ring (2) is as follows: the sectional area of the groove is slightly larger than that of the waterproof ring (2), and the depth of the concave pit is smaller than the wire diameter of the waterproof ring (2);

namely the relationship between the size of the groove and the wire diameter size of the waterproof ring (2): l is not less than H and not less than pi D²/4，H<D。

5. The waterproof structure of a screw-locking connecting member according to claim 1,

a gap (5) is arranged between the shell (4) and the part (3).

6. The waterproof structure of a screw-locking connecting member according to claim 1,

a sealed cavity (6) is arranged at the other end of the shell (4).

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