CN218325670U

CN218325670U - Self-tapping screw

Info

Publication number: CN218325670U
Application number: CN202222344732.5U
Authority: CN
Inventors: 邓金良
Original assignee: Jiaxing Dacheng Hardware Technology Co ltd
Current assignee: Jiaxing Dacheng Hardware Technology Co ltd
Priority date: 2022-09-02
Filing date: 2022-09-02
Publication date: 2023-01-17
Anticipated expiration: 2032-09-02

Abstract

The utility model relates to a screw technical field discloses a self tapping screw, the utility model discloses a screw, sleeve, facing, the connector of moulding plastics, the screw comprises the screw thread section that is located the anterior segment and the polished rod section that is located the back end, two the facing is opened the configuration and is passed through the connector of moulding plastics will two the facing bonding is fixed, the sleeve suit is in polished rod section department, the facing includes the base member, the fixed thread that is equipped with on the incurvated wall of base member. The utility model discloses a make a cylinder hole confession in advance on treating to connect the parent the facing inserts in interior, then will sleeve suit is in polished rod section department, then will through the plum blossom screwdriver the screw twists between the facing, screw section department with make behind the screw thread meshing the screw can be orderly inserts downwards between the facing and with two the facing outwards struts make the connection that this screw can be better on the parent of wooden class to waterproof that can be good avoids trompil department to take place to ulcerate.

Description

Self-tapping screw

Technical Field

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

Background

A large amount of screws are used in the existing wooden furniture, but because some furniture plates adopt laminated plates which are formed by gluing a large amount of fine broken particles, the service life of the plates fixed by common screws is not long, and open-hole joints are easy to gradually foam and fester under high humidity in a use scene of moist and easily-viscous water (such as kitchens and bathrooms), so that the connection effect is influenced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to overcome the problems presented above, a self-tapping screw is provided which solves the above-mentioned problems.

The utility model provides a its technical problem take following technical scheme to realize:

the utility model provides a self-tapping screw, includes screw, sleeve, facing, the connector of moulding plastics, the screw comprises the polished rod section that is located the screw thread section of anterior segment and is located the back end, two the facing of facing is opened the configuration and is passed through the connector of moulding plastics will two the facing bonding is fixed, the cover suit is in polished rod section department, the facing includes the base member, the fixed thread tooth that is equipped with on the wall of curving in the base member, the outer wall of curving outward of base member is fixed from top to bottom and is equipped with the interlock tooth piece just the outer end of interlock tooth piece is the blade form.

Preferably, the biting teeth pieces on the two tooth sockets used in pair are obliquely arranged and have an inclination angle not greater than fifteen degrees, and the inclination directions of the biting teeth pieces on the two tooth sockets are opposite.

Preferably, the sleeve comprises a stainless steel lantern ring and a pressure-sensitive adhesive sheet, the pressure-sensitive adhesive sheet is wound, wrapped and adhered to the outer side wall of the stainless steel lantern ring, the outer diameter of the pressure-sensitive adhesive sheet is consistent with the outer diameter of the end portion of the stainless steel lantern ring, and the lower end of the stainless steel lantern ring abuts against the upper end of the tooth socket.

Preferably, a plurality of through holes are arranged on the stainless steel lantern ring at intervals.

Preferably, the injection molding connector comprises two hemispherical bumps and a plastic connecting strip, the bumps are fixed at two ends of the plastic connecting strip in a hot-melting bonding manner, and the bumps are fixed on the substrate after being hot-melted and cured after being cooled.

Preferably, the base body is fixedly provided with a connecting hole for the lug to be embedded in, the lug is bonded in the connecting hole after being subjected to hot melting, and the upper end of the tooth socket is provided with a first flaring opening with an upward flaring opening for the lower end of the sleeve to be abutted against.

The utility model discloses an advantage is with positive effect: through beat a cylinder hole confession in advance on treating the connection parent the facing inserts in interior, then will sleeve suit is in polished rod section department, then will through plum blossom screwdriver the screw is twisted between the facing, screw section department with make behind the screw thread meshing the screw can be orderly insert downwards between the facing and with two the facing outwards struts, make in the interlock fluted piece pricks the lateral wall of parent, then work as make behind the sleeve inserts prefabricated cylinder hole pressure sensitive film receives the extrusion and makes pressure sensitive adhesive will gap between sleeve and the parent and the sleeve with gap between the polished rod section fills for connection that this screw can be better is on the parent of wooden class to can be good waterproof, avoid trompil department to take place the fester.

Drawings

The present invention will be further explained with reference to the drawings and examples.

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

FIG. 2 is a schematic view of the structure of the screw and the tooth socket of the present invention;

FIG. 3 is a schematic view of another embodiment of the middle mouthpiece of the present invention;

FIG. 4 is a schematic structural view of the injection-molded connector of the present invention;

FIG. 5 is a schematic view of the structure of the middle sleeve according to the present invention (the left side is the assembly completion, and the right side is the pressure-sensitive film opening part);

fig. 6 is a schematic top view of the mouthpiece of the present invention.

The scores in the figures are as follows: 10. a screw; 11. a polished rod segment; 12. a threaded segment; 13. a first flare; 14. screw teeth; 15. an engaging tooth sheet; 16. a substrate; 17. a tooth socket; 18. connecting holes; 19. injection molding the connector; 20. plastic connecting strips; 21. a bump; 22. a sleeve; 23. a pressure-sensitive film; 24. a stainless steel collar; 25. and (4) through holes.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

The embodiments of the present invention will be described in detail with reference to the accompanying drawings:

as shown in fig. 1-6, a self tapping screw, including screw 10, sleeve 22, facing 17, the connector 19 of moulding plastics, screw 10 comprises the polished rod section 11 that is located the screw thread section 12 of anterior segment and is located the back end, two facing 17 is run from opposite directions the configuration and is passed through the connector 19 of moulding plastics is with two facing 17 bonds fixedly, sleeve 22 suit is in polished rod section 11 department, facing 17 includes base member 16, the fixed thread 14 that is equipped with on the interior curved wall of base member 16, the outer curved wall of base member 16 is fixed from top to bottom at the interval and is equipped with interlock tooth piece 15 just the outer end of interlock tooth piece 15 is the blade form.

Preferably, the engaging teeth 15 on the two tooth sockets 17 used in a pair are obliquely arranged at an inclination angle not greater than fifteen degrees, and the inclination directions of the engaging teeth 15 on the two tooth sockets 17 are opposite, so that the two tooth sockets 17 will be squeezed open outwards when the screw 10 is screwed in, but the squeezing is a top-down process, that is, the engaging teeth 15 on the upper side of the tooth sockets 17 will bite into the connected parent body first, and the opposite inclination of the engaging teeth 15 makes the axial positions of the two tooth sockets 17 have opposite moving trends after biting into the parent body, so that the threads 14 inside the tooth sockets 17 can better fit with the threads on the threaded section 12, and good fastening performance is ensured.

Preferably, sleeve 22 includes stainless steel lantern ring 24 and pressure sensitive film 23, pressure sensitive film 23 is convoluteed the cladding and is pasted stainless steel lantern ring 24's lateral wall just pressure sensitive film 23's external diameter with stainless steel lantern ring 24's tip external diameter is unanimous, stainless steel lantern ring 24's lower extreme butt is in facing 17's upper end, through with pressure sensitive film 23 impresses the space that can fill up the screw hole in the screw hole, increases joint strength, prevents simultaneously that water from getting into and has guaranteed thread section 12 department is not corroded, has improved the water resistance.

Preferably, a plurality of through holes 25 are arranged on the stainless steel lantern ring 24 at intervals, and by arranging the through holes 25, the glue solution of the pressure-sensitive adhesive sheet 23 after being pressed can be filled into the gap between the polished rod section 11 and the stainless steel lantern ring 24 from the through holes 25, so that the connection strength of the polished rod section 11 and the stainless steel lantern ring 24 is enhanced, and the waterproof performance is improved.

Preferably, the injection-molded connector 19 includes two hemispherical bumps 21 and a plastic connecting strip 20, the bumps 21 are fixed to two ends of the plastic connecting strip 20 by hot melting, and the bumps 21 are fixed to the substrate 16 by hot melting and then solidified and molded after cooling.

Preferably, the base 16 is fixedly provided with a connecting hole 18 for the bump 21 to be embedded therein, the bump 21 is bonded in the connecting hole 18 after being hot-melted, and the upper end of the tooth socket 17 is provided with a first flaring 13 flaring upwards for the lower end of the sleeve 22 to be pressed against.

During specific implementation, a cylindrical hole is drilled in advance in a parent body to be connected for the tooth socket 17 to be inserted into, then the sleeve 22 is sleeved at the position of the light rod section 11, the screw 10 is screwed into the position between the tooth sockets 17 through a plum blossom screwdriver, the screw 10 can be inserted downwards in order between the tooth sockets 17 and outwards supports the two tooth sockets 17 after the thread section 12 is in threaded engagement with the screw teeth 14, the occlusion tooth sheet 15 is inserted into the side wall of the parent body, and then the pressure-sensitive adhesive sheet 23 is extruded after the sleeve 22 is inserted into the prefabricated cylindrical hole to enable the pressure-sensitive adhesive to fill the gap between the sleeve 22 and the parent body and the gap between the sleeve 22 and the light rod section 11, so that the screw can be better connected to the wooden parent body, and can be well waterproof, and the open hole position can be prevented from being broken.

It should be emphasized that the embodiments described herein are illustrative and not restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but also falls within the scope of the present invention, in any other embodiments derived by those skilled in the art according to the technical solutions of the present invention.

Claims

1. A self-tapping screw comprising a screw (10), characterized in that: still include sleeve (22), facing (17), the connector of moulding plastics (19), screw (10) comprise by the screw thread section (12) that are located the anterior segment and polished rod section (11) that are located the back end, two facing (17) run from opposite directions the configuration and pass through the connector of moulding plastics (19) will two facing (17) bonding is fixed, sleeve (22) suit is in polished rod section (11) department, facing (17) include base member (16), fixed thread (14) that are equipped with on the interior curved wall of base member (16), the outer curved wall of base member (16) is fixed from top to bottom at the interval be equipped with interlock tooth piece (15) just the outer end of interlock tooth piece (15) is the sword piece form.

2. A self-tapping screw as defined in claim 1, wherein: the occlusion teeth (15) on the two tooth sockets (17) used in pairs are obliquely arranged, the inclination angle is not more than fifteen degrees, and the inclination directions of the occlusion teeth (15) on the two tooth sockets (17) are opposite.

3. A self-tapping screw as defined in claim 2, wherein: the sleeve (22) comprises a stainless steel lantern ring (24) and a pressure-sensitive adhesive sheet (23), the pressure-sensitive adhesive sheet (23) is wound, wrapped and pasted on the outer side wall of the stainless steel lantern ring (24) and the outer diameter of the pressure-sensitive adhesive sheet (23) is consistent with the outer diameter of the end portion of the stainless steel lantern ring (24), and the lower end of the stainless steel lantern ring (24) abuts against the upper end of the tooth socket (17).

4. A self-tapping screw as defined in claim 3, wherein: a plurality of through holes (25) are arranged on the stainless steel lantern ring (24) at intervals.

5. A self-tapping screw as defined in claim 4, wherein: the injection molding connector (19) comprises two hemispherical lugs (21) and a plastic connecting strip (20), the lugs (21) are fixed at two ends of the plastic connecting strip (20) in a hot-melting bonding mode, and the lugs (21) are fixed on the base body (16) in a hot-melting bonding mode and are solidified and molded after cooling.

6. A self-tapping screw as defined in claim 5, wherein: the base body (16) is fixedly provided with a connecting hole (18) for the lug (21) to be embedded in, the lug (21) is bonded in the connecting hole (18) after being hot-melted, and the upper end of the tooth socket (17) is provided with a first flaring opening (13) which is flared upwards and is used for the lower end of the sleeve (22) to be pressed against.