CN221322998U - Drawing-resistant fixing head - Google Patents

Abstract

The utility model discloses a drawing-resistant fixing head, which comprises a columnar nail rod, wherein one end of the nail rod is provided with a conical nail head, the other end of the nail rod is provided with a hit nail tail, a side hole is formed in the nail tail, a saw cutting groove which extends along the axial direction of the nail rod and has a cross-shaped section is formed in the nail rod, one end of the saw cutting groove extends to the nail tail and is communicated with the outside, a sinking groove which is sunken towards the direction of the nail rod is formed in the nail tail, the bottom of the sinking groove is provided with a central hole which extends to the nail rod, an expansion body is filled in the central hole, the bottom of the sinking groove is provided with a screw head which is equally divided into four by the saw cutting groove, a nut matched with the screw head is connected with the screw head in a threaded manner, and the outer wall surface of the screw head is provided with taper. The fixing head has the characteristics of drawing resistance and firm connection, and is perfect in overall function and high in practicability.

Description

Drawing-resistant fixing head

Technical Field

The utility model relates to the technical field of hardware, in particular to a drawing-resistant fixing head.

Background

The nail gun can be used for fixing the nail to the wall surface, and if the nail tail exposed out of the wall surface is provided with a hole, the rope can be threaded for fixing. The nail body which is fixed on the wall surface through the nail gun or the hammering tool can also be called a fixing head, and the connection part of the nail body and the wall surface is the same as the nail structure, so that the phenomenon of loosening easily occurs, the drawing is not resisted, and the overall effect is poor. Accordingly, the utility model provides a pull-resistant fixing head.

Disclosure of utility model

The utility model aims to overcome the defects in the prior art and provide the drawing-resistant fixing head which has the characteristics of drawing resistance and firm connection.

In order to solve the technical problems, the aim of the utility model is realized as follows: the utility model relates to a drawing-resistant fixing head, which comprises a columnar nail rod, wherein one end of the nail rod is provided with a conical nail head, the other end of the nail rod is provided with a hit nail tail, a side hole is formed in the nail tail, a saw cutting groove which extends along the axial direction of the nail rod and has a cross-shaped section is formed in the nail rod, one end of the saw cutting groove extends to the nail tail and is communicated with the outside, a sinking groove which is sunken towards the direction of the nail rod is formed in the nail tail, the bottom of the sinking groove is provided with a central hole which extends to the nail rod, an expansion body is filled in the central hole, the bottom of the sinking groove is provided with a screw head which is equally divided into four by the saw cutting groove, a nut matched with the screw head is connected with the screw head in a threaded manner, and the outer wall surface of the screw head is provided with taper.

The utility model is further provided with: the outer wall surface of the stud head forms an included angle of 70-80 degrees with the horizontal plane.

The utility model is further provided with: an included angle of 75 degrees is formed between the outer wall surface of the stud head and the horizontal plane.

The utility model is further provided with: the nut is an outer hexagon nut.

The utility model is further provided with: the nut is a round nut with grooves or knurls on the outer wall surface.

The utility model is further provided with: the expansion body is a steel ball.

In summary, the utility model has the following beneficial effects: according to the drawing-resistant fixing head, the nut is screwed, so that the waist of the nail rod is outwards expanded due to the embedded expansion body, interference fit is formed between the nail rod and the wall surface hole, connection is firm and tight, drawing resistance is achieved, the overall function is complete, and practicability is high.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

Fig. 3 is a schematic view of a part of the structure of fig. 2.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present utility model, preferred embodiments of the present utility model will be described below with reference to specific examples, but it should be understood that these descriptions are only for further illustrating the features and advantages of the present utility model, and are not limiting the patent claims of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model will be further described with reference to the drawings and preferred embodiments.

Example 1

Referring to fig. 1 to 3, a drawing-resistant fixing head according to this embodiment includes a columnar pin rod 1, one end of the pin rod 1 has a tapered pin head 2, the other end has a hit pin tail 3, a side hole 4 is formed on the pin tail 3, a sawing groove 5 extending along an axial direction of the pin rod 1 and having a cross section in a cross shape is formed on the pin rod 1, one end of the sawing groove 5 extends to the pin tail 3 and is communicated with the outside, a sinking groove 6 recessed toward the pin rod direction is formed on the pin tail 3, a central hole 7 extending to the pin rod 1 is formed at a bottom of the sinking groove 6, an expansion body 8 is filled in the central hole 7, the expansion body 8 is a steel ball, a stud head 9 equally divided into four by the sawing groove is formed at a bottom of the sinking groove 6, a nut 10 matched with the stud head 9 is connected with the stud head in a threaded manner, and a taper is formed on an outer wall of the stud head 9.

Further, an included angle of 75 degrees is formed between the outer wall surface of the stud head 9 and the horizontal plane.

Further, the nut 10 is an outer hexagonal nut, and the nut 10 may be a round nut with a groove or knurling on an outer wall surface.

In this embodiment, first, the nut 10 is screwed to the stud head 9 but is not in a screwed state, and at this time, the nail head 2 is struck against the head and the tail 3 of the fixing head, which are closely attached to the wall surface, with a hammering tool, so that the nail shaft 1 and the nail head 2 on the fixing head are driven into the wall surface. In order to strengthen the connection strength between the nail rod 1 and the wall surface, a wrenching tool can be used for extending into the sinking groove 6, the nut 10 is further screwed, during the period, the nut 10 inwards extrudes the stud head 9 equally divided into four parts by the sawing groove, and under the condition that the sawing groove 5 deforms and the expansion body 8 is used as an expansion fulcrum, the waist of the nail rod 1 is outwards expanded, the diameter is slightly increased, and interference fit is formed with the wall surface hole, so that the effects of tight connection and drawing resistance are achieved.

Wherein, through setting up heavy groove 6, make the spiral shell column head 9 and nut 10 be located the below of the up end of tail 3 to make the tail 3 up end that is hammered expose outside, easily hit it in the wall.

According to the drawing-resistant fixing head, the nut is screwed, so that the waist of the nail rod is outwards expanded due to the embedded expansion body, interference fit is formed between the nail rod and the wall surface hole, connection is firm and tight, drawing resistance is achieved, the overall function is complete, and practicability is high.

Unless specifically stated otherwise, in the present utility model, if there are terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the positional or positional relation is based on the actually shown positional or positional relation, it is merely for convenience of describing the present utility model and simplifying the description, and it is not necessary to indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional or positional relation in the present utility model are merely for exemplary illustration and are not to be construed as limitations of the present patent, and it is possible for those skilled in the art to combine the embodiments and understand the specific meaning of the above terms according to the specific circumstances.

Unless specifically stated or limited otherwise, the terms "disposed," "connected," and "connected" herein are to be construed broadly, e.g., they may be fixed, removable, or integral; 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.

The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims (6)

1. The utility model provides a stationary head that resistant drawing, is including being columnar nail pole, and the one end of nail pole has the pin fin that is the taper, the other end has the nail tail that receives, has seted up the side opening on the nail tail, its characterized in that: the screw rod is provided with a saw cutting groove which extends along the axial direction of the screw rod and is cross-shaped in section, one end of the saw cutting groove extends to the screw tail and is communicated with the outside, the screw tail is provided with a sinking groove which is concave towards the direction of the screw rod, the bottom of the sinking groove is provided with a central hole which extends to the screw rod, an expansion body is filled in the central hole, the bottom of the sinking groove is provided with screw heads which are equally divided into four by the saw cutting groove, the screw heads are connected with nuts matched with the screw heads in a threaded manner, and the outer wall surface of the screw heads is provided with taper.

2. The pullout-resistant fixture head of claim 1, wherein: the outer wall surface of the stud head forms an included angle of 70-80 degrees with the horizontal plane.

3. The pullout-resistant fixture head of claim 2, wherein: an included angle of 75 degrees is formed between the outer wall surface of the stud head and the horizontal plane.

4. A pullout-resistant fixing head as claimed in any one of claims 1 to 3, wherein: the nut is an outer hexagon nut.

5. A pullout-resistant fixing head as claimed in any one of claims 1 to 3, wherein: the nut is a round nut with grooves or knurls on the outer wall surface.

6. The pullout-resistant fixture head of claim 1, wherein: the expansion body is a steel ball.