CN219711992U

CN219711992U - Anti-theft self-tapping screw with plum blossom head

Info

Publication number: CN219711992U
Application number: CN202320568706.2U
Authority: CN
Inventors: 陈惠惠; 张兰; 吴海应; 张小荛
Original assignee: Jiaxing Dali Precision Fastener Co ltd
Current assignee: Jiaxing Dali Precision Fastener Co ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-09-19
Anticipated expiration: 2033-03-16

Abstract

The utility model belongs to the technical field of self-tapping nails, and relates to an anti-theft self-tapping nail with a plum blossom head. The self-tapping screw solves the problems that the existing self-tapping screw is easy to slip, wear and the like in the process of fixing and tightening, so that the existing self-tapping screw cannot be well detached and replaced. The plum blossom head anti-theft self-tapping screw comprises a screw rod with threads, wherein the rear end of the screw rod is connected with a flange and a plum blossom head connected to the rear end of the flange, a plurality of inner grooves axially distributed along the plum blossom head are formed in the circumferential surface of the plum blossom head, inclined parts connected to the flange and the groove walls on two sides of the inner grooves are arranged on one side of the groove bottom of the inner grooves, close to the flange, of the groove bottom, and the inclined direction of the inclined parts is inclined outwards from the rear end of the plum blossom head to the front end of the plum blossom head. The utility model has the advantages that: through adjusting and improving the twisting part of the anti-theft self-tapping screw of the plum blossom head, slipping and abrasion are avoided when the anti-theft self-tapping screw is turned tightly, and once the anti-theft self-tapping screw is damaged, the anti-theft self-tapping screw cannot be well detached and replaced, and meanwhile, the anti-theft self-tapping screw of the plum blossom head has a marked structure, so that the anti-theft purpose is conveniently identified.

Description

Anti-theft self-tapping screw with plum blossom head

Technical Field

The utility model belongs to the technical field of self-tapping nails, and relates to an anti-theft self-tapping nail with a plum blossom head.

Background

The self-tapping screw is a screw fastener for self-tapping and drilling matched screw threads in a pre-drilling hole of a metal or non-metal material, the head of the existing self-tapping screw is round, and a turning mode of a straight groove, a cross groove, an inner hexagon and the like is adopted, but the conditions of slipping, abrasion and the like are easy to occur in the fixing and turning process, so that the turning part is damaged, turning parts are not matched, the sizes are different, no force points exist and the like, good disassembly and replacement cannot be performed, and the self-tapping screw is generally identical in structure and does not have identification.

For example, chinese patent discloses a ground screw chinese patent No. (CN 202010616827.0), a ground screw, including a nail body extending along an up-down direction and a rotating member for driving the nail body to rotate, the nail body has a rotation axis extending along the up-down direction, the rotating member is disposed at an upper end portion of the nail body, the ground screw further includes a first screw member disposed on the nail body, the first screw member extends helically around the rotation axis, and a screw radius of a lower portion of the first screw member is smaller than a screw radius of an upper portion. According to the scheme, the ground screw adopts the first screw with the variable screw radius, and the screw radius at the upper part of the first screw is larger, so that larger ground grabbing force is provided, the anchoring force is larger, and the tent connection is more stable; at the same time, the screw radius of the lower part of the first screw piece is smaller, so that the ground screw can be easily inserted into the ground, and the force required for inserting the ground is smaller.

Although the above scheme has the advantages, the above scheme is not adjusted and improved for the screwing part, and the situations of damage to the screwing part, mismatching with the screwing piece, different sizes, no force points and the like still exist, so that the screwing part cannot be well disassembled and replaced once damaged, and the structure is relatively common and inconvenient to identify.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides the anti-theft self-tapping screw for the plum blossom head, which solves the technical problems and has the distinguishing purpose of achieving the anti-theft purpose.

The aim of the utility model can be achieved by the following technical scheme:

the plum blossom head anti-theft self-tapping screw comprises a screw rod with threads, wherein the rear end of the screw rod is connected with a flange and a plum blossom head connected to the rear end of the flange, a plurality of inner grooves axially distributed along the plum blossom head are formed in the circumferential surface of the plum blossom head, inclined parts connected to the flange and the groove walls on two sides of the inner grooves are arranged on one side of the groove bottom of the inner grooves, and the inclined direction of the inclined parts is inclined outwards from the rear end of the plum blossom head to the front end of the plum blossom head.

In the anti-theft self-tapping screw for the plum blossom head, the length of the inclined part in the groove length direction of the inner groove is 1/2-1/3 of the total length of the inner groove.

In the above plum blossom head anti-theft self-tapping screw, six inner grooves axially distributed along the plum blossom head are arranged on the circumferential surface of the plum blossom head.

In the plum blossom head anti-theft self-tapping screw, the rear end of the plum blossom head is provided with a chamfer. In the above anti-theft self-tapping screw with the plum blossom head, the front end face of the flange is provided with a plurality of locking bulges which are uniformly distributed along the circumference.

In the above anti-theft self-tapping screw for the plum blossom head, each locking protrusion is formed by connecting a first inclined plane and a second inclined plane which are different in inclination direction.

In the above anti-theft self-tapping screw for the plum blossom head, the surface area of the first inclined plane is larger than the surface area of the second inclined plane, the first inclined plane is a trapezoid inclined plane, the second inclined plane is a trapezoid inclined plane, and the first inclined plane is vertically connected with the second inclined plane.

In the anti-theft self-tapping screw with the plum blossom head, the rear end of the screw rod is connected with the front end of the flange through the conical section.

In the above anti-theft self-tapping screw with the plum blossom head, the thread extends from the middle part of the screw rod to the tip of the screw rod.

Compared with the prior art, the anti-theft self-tapping screw with the plum blossom head has the following beneficial effects:

through adjusting and improving the twisting part of the anti-theft self-tapping screw for the plum blossom head, the problems of damage to the twisting part, mismatching with the twisting part, different sizes, no force points and the like are avoided, slipping and abrasion in the screwing process are prevented, the phenomenon that the anti-theft self-tapping screw for the plum blossom head cannot be well disassembled and replaced once damaged is avoided, and a certain mark structure is arranged in the anti-theft self-tapping screw for the plum blossom head so as to facilitate identification and play an anti-theft purpose.

Drawings

Fig. 1 is a schematic diagram of a structure of a plum blossom head anti-theft self-tapping screw according to an embodiment of the present utility model.

Fig. 2 is a schematic diagram of another structure of the anti-theft self-tapping screw with a plum blossom head according to the embodiment of the utility model.

FIG. 3 is a top view of FIG. 1

Fig. 4 is an enlarged view at a in fig. 1.

In the figure, a nail rod 1, a thread 11, a flange 2, a plum blossom head 3, an inner groove 31, an inclined part 311, a chamfer 32, a locking protrusion 4, a first inclined surface 41, a second inclined surface 42 and a conical section 5.

Detailed Description

The following are specific embodiments of the utility model and the technical solutions of the utility model will be further described with reference to the accompanying drawings, but the utility model is not limited to these embodiments.

Example 1

As shown in fig. 1 to 4, the anti-theft self-tapping screw for the plum blossom head comprises a screw rod 1 with threads 11, a flange 2 and a plum blossom head 3 connected to the rear end of the flange 2 are connected to the rear end of the screw rod 1, a plurality of inner grooves 31 axially distributed along the plum blossom head 3 are arranged on the circumferential surface of the plum blossom head 3, inclined parts 311 connected to the flange 2 and the groove walls on two sides of the inner grooves 31 are arranged on one side of the groove bottom of the inner grooves 31 close to the flange 2, and the inclined direction of the inclined parts 311 is outwards inclined from the rear end of the plum blossom head 3 to the front end of the plum blossom head 3.

In order to facilitate disassembly and prevent slip and wear, the length of the inclined portion 311 in the groove length direction of the inner groove 31 is 1/2 to 1/3 of the total length of the inner groove 31 as shown in fig. 2 to 4. The fixing part of the wrenching piece is fixed with the inner groove 31 of the plum blossom head 3 to prevent falling off, slipping and the like.

To achieve the screwing, in particular, the circumferential surface of the quincuncial head 3 in this embodiment is provided with six internal grooves 31 axially distributed along the quincuncial head 3.

In order to prevent the wrenching process from being injured, as shown in fig. 4, specifically, the rear end of the quincuncial head 3 in this embodiment is provided with a chamfer 32. The plum blossom head 3 is also provided with an inner hexagonal groove, so that the turning and twisting purpose of the plum blossom head anti-theft self-tapping screw can be realized through the inner hexagonal groove, and the practicability is improved.

In order to prevent loosening and the like of the anti-theft self-tapping screw with the plum blossom head after fixed locking, as shown in fig. 1 and 2, the front end surface of the flange 2 is provided with a plurality of locking bulges 4 which are uniformly distributed in circumference. The locking protrusion 4 is abutted to ensure the stability of connection.

Specifically, each locking projection 4 in the present embodiment is formed by connecting a first inclined surface 41 and a second inclined surface 42 which differ in inclination direction, respectively.

As shown in fig. 2, the surface area of the first inclined surface 41 is larger than the surface area of the second inclined surface 42, and the first inclined surface 41 is a trapezoidal inclined surface, and the second inclined surface 42 is a trapezoidal inclined surface, and the first inclined surface 41 and the second inclined surface 42 are vertically connected. However, the present utility model is not limited to this method, and for example, the second inclined surface 42 may have a larger surface area than the first inclined surface 41, and both may have a trapezoidal inclined surface, which is the same technical effect, and will not be described in detail herein.

For achieving the fixing and guiding, as shown in fig. 1 and 2, specifically, the rear end of the nail rod 1 and the front end of the flange 2 are connected through a conical section 5 in this embodiment. The axial lead of the flange 2 is overlapped with the nail rod 1 through the conical section 5, and the connection stability in the fixing process of the anti-theft self-tapping nail with the plum blossom head is ensured.

To achieve fixation of the fixture (wood) by the anti-theft tapping screw for the plum blossom head, as shown in fig. 1, a screw thread 11 extends from the middle of the shank 1 to the spike of the shank 1. The anti-theft self-tapping screw with the plum blossom head can be fully fixed in the fixed object (wood) by inserting the nail tip into the fixed object (wood) and fastening by combining the screw thread 11.

Although the terms of the shank 1, the thread 11, the flange 2, the plum blossom head 3, the inner groove 31, the inclined portion 311, the chamfer 32, the locking protrusion 4, the first inclined surface 41, the second inclined surface 42, the conical section 5, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Claims

1. The utility model provides a plum blossom head theftproof self-tapping screw, includes nail pole (1) that has screw thread (11) the rear end of nail pole (1) be connected with flange (2) and connect in plum blossom head (3) of flange (2) rear end, its characterized in that the circumference face of plum blossom head (3) is equipped with a plurality of edges plum blossom head (3) axial distribution's inner groove (31), the tank bottom of inner groove (31) be close to one side of flange (2) be equipped with connect in flange (2) with tilting portion (311) of inner groove (31) both sides cell wall, tilting direction of tilting portion (311) is for outwards slope from the rear end of plum blossom head (3) to the front end of plum blossom head (3).

2. The anti-theft self-tapping screw for the plum blossom head according to claim 1, wherein the length of the inclined portion (311) in the groove length direction of the inner groove (31) is 1/2-1/3 of the total length of the inner groove (31).

3. The anti-theft self-tapping screw for plum blossom head according to claim 1, characterized in that the circumferential surface of the plum blossom head (3) is provided with six inner grooves (31) axially distributed along the plum blossom head (3).

4. The anti-theft self-tapping screw for plum blossom head according to claim 1, characterized in that the rear end of the plum blossom head (3) is provided with a chamfer (32).

5. The anti-theft self-tapping screw for the plum blossom head according to claim 1, wherein the front end surface of the flange (2) is provided with a plurality of locking bulges (4) which are uniformly distributed along the circumference.

6. The anti-theft self-tapping screw for the plum blossom head according to claim 5, wherein each locking protrusion (4) is formed by connecting a first inclined surface (41) and a second inclined surface (42) which are different in inclination direction.

7. The anti-theft self-tapping screw for a plum blossom head according to claim 6, wherein the surface area of the first inclined surface (41) is larger than the surface area of the second inclined surface (42), and the first inclined surface (41) is a trapezoid inclined surface, the second inclined surface (42) is a trapezoid inclined surface, and the first inclined surface (41) and the second inclined surface (42) are vertically connected.

8. The anti-theft self-tapping screw for the plum blossom head according to claim 1, wherein the rear end of the screw rod (1) and the front end of the flange (2) are connected through a conical section (5).

9. The anti-theft self-tapping screw for the plum blossom head according to claim 1, characterized in that the thread (11) extends from the middle of the shank (1) to the tip of the shank (1).