CN214661417U

CN214661417U - Waterproof screw assembly

Info

Publication number: CN214661417U
Application number: CN202022921242.8U
Authority: CN
Inventors: 李宏伟; 郑晓玲; 唐亚峰
Original assignee: Huizhou Zhuoyue Fastening System Co ltd
Current assignee: Huizhou Zhuoyue Fastening System Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-11-09
Anticipated expiration: 2030-12-08

Abstract

The utility model relates to a waterproof screw subassembly, including screw and waterproof silica gel packing ring, the screw includes the spiral shell head on upper portion, the spiral shell neck of being connected with spiral shell head downside middle part, the screw rod of being connected with spiral shell neck lower extreme, the lower half of screw rod is equipped with the point and glues the district for prevent not hard up, waterproof silica gel packing ring cover in the spiral shell neck, install in the inner groovy of spiral shell head downside, waterproof silica gel packing ring's lower surface exposes the surface of spiral shell head downside. The screw head comprises an upper circular table and a cylinder connected with the circular table. The inner groove at the lower side of the screw head can prevent the pressure from pinching to lead the waterproof silica gel gasket to be crushed, prolongs the service life of the repeatedly-disassembled waterproof silica gel gasket, avoids the problem of waterproof failure caused by excessive pressure deformation of the waterproof silica gel gasket, and improves the product quality.

Description

Waterproof screw assembly

Technical Field

The utility model relates to a screw production field especially relates to a waterproof screw subassembly.

Background

The existing waterproof sealing screw is an M6 outer hexagonal flange (flange outer diameter 14.2), waterproof sealing silica gel is coated on the surface of the flange, and although the waterproof sealing silica gel has a waterproof effect, the waterproof sealing silica gel has the following defects:

(1) the glue cannot be coated into a plane, silica gel for screwing the screw can be flattened or damaged in the using process, and the quality is unstable;

(2) when the waterproof screw is assembled and disassembled repeatedly, the silica gel is easy to damage, so that the waterproof sealing glue coating is invalid, and the service life is short.

To address these problems, we have invented a waterproof screw assembly.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an invention aim at solve current waterproof seal screw, have the rubber coating and can not scribble into the plane, screw up the screw and fragile silica gel waterproof inefficacy in the use, the quality is unstable, the short problem of life. The concrete solution is as follows:

the utility model provides a waterproof screw subassembly, includes screw and waterproof silica gel packing ring, and the screw includes the spiral shell head on upper portion, the spiral shell neck of being connected with spiral shell head downside middle part, the screw rod of being connected with spiral shell neck lower extreme, and the lower half of screw rod is equipped with the dispensing district for prevent not hard up, waterproof silica gel packing ring cover in the spiral shell neck, install in the inner groovy of spiral shell head downside, waterproof silica gel packing ring's lower surface exposes the surface of spiral shell head downside.

Furthermore, the screw head comprises an upper circular table and a cylinder connected with the circular table.

Furthermore, the upper bottom of round platform is to having interior hexagonal shrinkage pool downwards for the insertion of screwdriver head, the inner groovy is located the center of going to the bottom of round platform, and the inner groovy is round platform shape.

Furthermore, the waterproof silica gel gasket is circular, the outer diameter of the waterproof silica gel gasket is smaller than the diameter of the upper bottom of the inner groove, the inner diameter of the waterproof silica gel gasket is matched with the diameter of the screw neck, and the inner ring of the waterproof silica gel gasket is tightly matched with the screw neck to prevent the waterproof silica gel gasket from falling off from the screw.

Further, the screw neck is smooth surface and thread-free.

Furthermore, the screw rod is provided with self-tapping threads or machine thread threads.

Furthermore, the lower part of the inner hexagonal concave hole is connected with a tapered hole.

Further, the distance between the lower end of the dispensing area and the lower end of the screw rod is 1-3 thread pitches.

Furthermore, there is nylon glue in the district is glued to the point, and nylon glue is attached to the screw surface in the district is glued to the point for prevent to produce after the screw from screwing up not hard uply, the length in district is glued to the point is 5 +/-1 mm, and the radian in district is glued to the point is less than the semicircle of screw rod cross section.

Furthermore, the diameter of the lower bottom of the circular truncated cone is equal to that of the cylinder, and the circular truncated cone and the cylinder are of an integral structure.

To sum up, adopt the utility model discloses a technical scheme has following beneficial effect:

the scheme solves the problems that the existing sealing waterproof screw cannot be coated into a plane due to rubber coating, the screw is screwed up in the using process, silica gel is easy to damage, the quality is unstable, and the service life is short. The inner groove at the lower side of the screw head can prevent the pressure from pinching to lead the waterproof silica gel gasket to be crushed, prolongs the service life of the repeatedly-disassembled waterproof silica gel gasket, avoids the problem of waterproof failure caused by excessive pressure deformation of the waterproof silica gel gasket, and improves the product quality. The effective contact diameter of the waterproof silica gel gasket is increased, and the sealing performance is improved. The waterproof silica gel gasket is changed into a penetrating mode, so that the waterproof silica gel gasket can be replaced in case of damage of silica gel, and the maintenance cost is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed to be used in the description of the embodiments of the present invention will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive faculty.

Fig. 1 is a structural diagram of a waterproof screw assembly of the present invention;

FIG. 2 is a view showing the structure of the screw of the present invention;

fig. 3 is a top view of the screw of the present invention;

fig. 4 is a bottom view of the screw of the present invention;

fig. 5 is a structural diagram of the waterproof silicone gasket of the present invention;

fig. 6 is a side view of the waterproof silicone gasket of the present invention.

Description of reference numerals:

10-screw, 11-screw head, 12-screw neck, 13-screw rod, 14-dispensing area, 15-inner groove, 16-inner hexagonal concave hole, 17-conical hole, 20-waterproof silica gel gasket, 111-round table and 112-cylinder.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 6, a waterproof screw assembly includes a screw 10 and a waterproof silicone gasket 20, the screw 10 includes a screw head 11 on the upper portion, a screw neck 12 connected to the middle of the lower side of the screw head, and a screw 13 connected to the lower end of the screw neck 12, the lower half of the screw 13 is provided with a dispensing region 14 for preventing loosening, the waterproof silicone gasket 20 is sleeved on the screw neck 12 and installed in an inner groove 15 on the lower side of the screw head 11, and the lower surface of the waterproof silicone gasket 20 is exposed out of the surface on the lower side of the screw head 11.

Further, the screw head 11 includes two portions, i.e., an upper round table 111 and a cylinder 112 connected to the round table 111.

Further, the upper end of the circular truncated cone 111 is provided with a hexagonal concave hole 16 downwards for inserting a screwdriver head, the inner groove 15 is arranged at the center of the lower end of the circular truncated cone 111, the inner groove 15 is in a circular truncated cone shape (a gap is arranged between the periphery of the circular truncated cone shape and the outer ring of the waterproof silica gel gasket 20, the diameter of the upper end of the circular truncated cone shape is 16.5 +/-0.2 mm, the maximum diameter of the lower end of the circular truncated cone shape is 17.8mm, the outer diameter of the waterproof silica gel gasket 20 is 16.0-16.3 mm, the thickness of the waterproof silica gel gasket 20 is 1.6-1.7 mm, and the depth of the inner groove 15 is 1.0 +/-0.1 mm).

Further, the waterproof silicone gasket 20 is circular, the outer diameter of the waterproof silicone gasket is smaller than the diameter of the upper bottom of the inner groove 15, the inner diameter of the waterproof silicone gasket is matched with the diameter of the screw neck 12, and the inner ring of the waterproof silicone gasket 20 is tightly matched with the screw neck 12 to prevent the waterproof silicone gasket 20 from falling off from the screw 10.

Further, the threaded neck 12 is smooth surfaced, unthreaded.

Furthermore, the screw 13 is provided with self-tapping threads or machine thread threads, and the external diameter of the threads is 5.82-5.97 mm.

Further, a tapered hole 17 is connected to the lower portion of the hexagonal socket 16. The diameter of the circumscribed circle of the inner hexagonal concave hole 16 is at least 5.72mm, the diameter of the inscribed circle of the inner hexagonal concave hole 16 is 5.02-5.14 mm, and the depth of the inner hexagonal concave hole 16 is 3.0 +/-0.2 mm.

Further, the distance between the lower end of the dispensing area 14 and the lower end of the screw 13 is 1-3 thread pitches.

Further, there is nylon glue in dispensing district 14, and nylon glue is attached to the screw thread (including screw crest and screw thread trough) surface in dispensing district 14 for prevent that screw 10 from producing after screwing up becoming flexible, and the length in dispensing district 14 is 5 +/-1 mm, and the radian in dispensing district 14 is less than the semicircle of screw 13 cross section.

Furthermore, the diameter of the lower bottom of the circular truncated cone 111 is equal to the diameter of the cylinder 112, and the circular truncated cone 111 and the cylinder 112 are of an integral structure. The diameter of the cylinder 112 is 22.0mm at most, the height of the cylinder 112 is 2.8mm, the overall height of the screw head 11 is 6.2 +/-0.1 mm, and the length of the screw 13 extending out of the screw head 11 is 16.0 +/-0.35 mm.

In particular, all the data parameters listed in the embodiment are only one of the preferred embodiments, and are not limited to the patent, and in practical applications, the data parameters can be appropriately adjusted according to the specification requirements of specific waterproof screw products.

The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.

Claims

1. A waterproof screw subassembly which characterized in that: the waterproof silicone gasket is sleeved in the screw neck and arranged in an inner groove in the lower side of the screw head, and the lower surface of the waterproof silicone gasket is exposed out of the surface of the lower side of the screw head; the screw head comprises an upper circular table and a cylinder connected with the circular table, the inner groove is formed in the center of the lower bottom of the circular table, and the inner groove is in a circular table shape.

2. The waterproof screw assembly of claim 1, wherein: the upper bottom of the circular truncated cone is provided with a hexagonal concave hole downwards for inserting the screwdriver head.

3. The waterproof screw assembly of claim 2, wherein: the waterproof silica gel gasket is in a ring shape, the outer diameter of the waterproof silica gel gasket is smaller than the diameter of the upper bottom of the inner groove, the inner diameter of the waterproof silica gel gasket is matched with the diameter of the screw neck, and the inner ring of the waterproof silica gel gasket is tightly matched with the screw neck to prevent the waterproof silica gel gasket from falling off from the screw.

4. A water resistant screw assembly as claimed in claim 3, wherein: the screw neck is smooth in surface and free of threads.

5. The waterproof screw assembly of claim 4, wherein: and self-tapping threads or machine thread threads are arranged on the screw rod.

6. The waterproof screw assembly of claim 5, wherein: the lower part of the inner hexagonal concave hole is connected with a tapered hole.

7. The waterproof screw assembly of claim 6, wherein: the distance between the lower end of the glue dispensing area and the lower end of the screw rod is 1-3 thread intervals.

8. The waterproof screw assembly of claim 7, wherein: the point is glued the district mid point and is had nylon to glue, and nylon is glued and is adhered to the threaded surface in the point is glued the district for prevent to produce after the screw from screwing up not hard up, the length in point is 5 +/-1 mm, and the radian in point is lighter than the semicircle of screw rod cross section.

9. The waterproof screw assembly of claim 8, wherein: the diameter of the lower bottom of the circular truncated cone is equal to that of the cylinder, and the circular truncated cone and the cylinder are of an integral structure.