CN209212738U - A stud with self-tapping screws - Google Patents

Abstract

The utility model provides a stud with a self-tapping screw, which comprises a stud body and a hexagonal cylindrical body part, the stud body and the hexagonal cylindrical body part are integrally formed, and the stud body comprises a first external thread segment and a cylindrical body part. , the second external thread segment and the screw head. The utility model has the functions of a self-tapping screw and a double-ended stud, and can be installed on parts without drilling holes or tapping, which is convenient for installation and use; , The setting of the groove can be installed in a variety of ways, which can facilitate the operator to install with a hexagonal tool or a conventional screwdriver, and the installation method is flexible.

Description

A stud with self-tapping screws

technical field

The utility model relates to the technical field of fasteners, in particular to a stud with self-tapping screws.

Background technique

A stud is a type of fastener that has no head and only has external threads on both ends. When connecting, one end of it must be screwed into the part with the internal threaded hole, the other end must pass through the part with the through hole, and then screw on the nut, so that the two parts are tightly connected as a whole. This form of connection is called a stud connection and is a detachable connection. It is mainly used for occasions where one of the connected parts is thick, requires a compact structure, or is not suitable for bolt connection due to frequent disassembly.

When a general stud is used, it needs to be installed on a bottomed hole or tapped part. In daily use, sometimes it is necessary to connect one end of the stud to the part without drilling or tapping. At this time, the general double-ended stud cannot be used directly, and it is necessary to drill the bottoming hole and tapping on the part. This brings inconvenience.

Utility model content

The utility model provides a stud with a self-tapping screw, which has the functions of a self-tapping screw and a double-ended stud, can be installed on parts without drilling holes or tapping, and can use various fixed installation methods.

To achieve the above object, the utility model adopts the following technical solutions:

A stud with a self-tapping screw, comprising a stud body and a hexagonal cylinder part, the stud body and the hexagonal cylinder part are integrally formed, and the central axis of the stud body and the hexagonal cylinder are integrally formed. The central axis of the body portion coincides; the stud body includes a first external thread segment, a cylindrical body portion, a second external thread segment and a screw head, and the hexagonal cylindrical body portion is located between the first external thread segment and the cylinder In the middle of the body part, the second external thread segment is located in the middle of the cylindrical body part and the screw head; the outer diameter of the first external thread segment is equal to the outer diameter of the second external thread segment, so The surface of the screw head has external threads; the top surface of the first external thread segment is provided with a notch and a groove, the notch corresponds to the central axis of the stud body, and the groove is formed by the screw. The column body is formed inwardly recessed in the inner center of the slot.

Preferably, the surface of the cylindrical body portion is smooth.

Preferably, the diameter of the circumscribed circle of the hexagonal cylindrical portion is larger than the outer diameter of the cylindrical portion.

Preferably, the pitch of the first external thread segment is equal to that of the second external thread segment.

Preferably, the slot, the second external thread segment and the screw head cooperate to form a self-tapping screw, or the groove, the second external thread segment and the screw head cooperate to form a self-tapping screw.

Preferably, the slot is a regular hexagon.

Preferably, the grooves are cross-shaped or inline-shaped.

Compared with the prior art, the utility model provides a stud with a self-tapping screw, which has the functions of a self-tapping screw and a double-headed stud, and can be installed on parts without drilling holes or tapping, which is convenient. At the same time, the arrangement of the hexagonal cylinder body, the notch and the groove of the stud of the present invention can facilitate the operator to use hexagonal tools or conventional screwdrivers for fixed installation, and the installation method is more flexible.

Description of drawings

1 is a schematic structural diagram of a stud with a self-tapping screw according to Embodiment 1 of the present utility model;

2 is a top view of a stud with a self-tapping screw according to Embodiment 1 of the present utility model;

3 is a schematic structural diagram of a stud with a self-tapping screw according to Embodiment 2 of the present invention;

4 is a top view of a stud with self-tapping screws according to Embodiment 2 of the present invention.

Detailed ways

In order to have a further understanding of the purpose, structure, features, and functions of the present utility model, the following detailed descriptions are given in conjunction with the embodiments.

Please refer to FIG. 1 and FIG. 2 in conjunction. FIG. 1 is a schematic structural diagram of a stud with a self-tapping screw according to Embodiment 1 of the present invention, and FIG. 2 is a schematic diagram of a self-tapping screw according to Embodiment 1 of the present invention. top view of the stud. A stud with a self-tapping screw according to the first embodiment of the present invention includes a stud body 1 and a hexagonal cylindrical body 2, the stud body 1 and the hexagonal cylindrical body 2 are integrally formed, and the central axis of the stud body 1 Coinciding with the central axis of the hexagonal cylinder part 2 can maximize the strength of the parts and make the connection more firm. The stud body 1 includes a first external thread segment 11, a cylindrical body portion 12, a second external thread segment 13 and a screw head 14, the hexagonal cylindrical body portion 2 is located in the middle of the first external thread segment 11 and the cylindrical body portion 12, and the second The outer thread segment 13 is located in the middle of the cylindrical body 12 and the screw head 14; the outer diameter of the first outer thread segment 11 is equal to the outer diameter of the second outer thread segment 13, and the surface of the screw head 14 has an outer thread 141; The top surface of the thread segment 11 is provided with a notch 111 and a groove 112 , the notch 111 corresponds to the central axis of the stud body 1 , and the groove 112 is formed by the stud body 1 inwardly recessed in the inner center of the notch 111 . Preferably, the slot 111 , the second external thread segment 13 and the screw head 14 cooperate to form a self-tapping screw, or the groove 112 , the second external thread segment 13 and the screw head 14 cooperate to form a self-tapping screw.

When connecting parts, the studs can be fixed in a variety of ways, such as: using a hexagonal tool matching the hexagonal cylinder part 2 to screw the studs into the parts; using a wrench matching the notch 111, the notch 111, The second external thread segment 13 and the screw head 14 form a self-tapping screw, and the stud is screwed into the part; using a conventional screwdriver that matches the groove 112, the groove 112, the second external thread segment 13 and the screw head 14 form a self-tapping screw screw, screw the stud into the part.

As a preferred embodiment of the present invention, the surface of the cylindrical portion 12 is smooth.

As a preferred embodiment of the present invention, the diameter of the circumscribed circle of the hexagonal cylindrical body portion 2 is larger than the outer diameter of the cylindrical body portion 12 . The hexagonal cylindrical body 2 can be convenient for the operator to use a wrench or a hexagonal tool to install the parts, and the fixing method is more flexible.

As a preferred embodiment of the present invention, the pitch of the first external thread segment 11 is equal to the thread pitch of the second external thread segment 13 .

As a preferred embodiment of the present invention, the slot 111 is a regular hexagon. The slot 111 is set as a regular hexagon, and can be installed with a hexagonal tool such as an external hexagonal wrench that matches the slot 111. Combined with the second external thread segment 13 and the screw head 14, the stud of the present invention can be directly screwed into Flexible and convenient in parts that are not primed or tapped.

As a preferred embodiment of the present invention, the grooves 112 are cross-shaped or inline-shaped. As shown in Figures 1 and 2, the groove 112 of a stud with a self-tapping screw according to Embodiment 1 of the present invention is cross-shaped, and the groove 112, the second external thread segment 13 and the screw head 14 cooperate to form a self-tapping Tapping screws can be flexibly installed by using a conventional cross-shaped screwdriver; as shown in Figures 3 and 4, the groove 113 of a stud with a self-tapping screw according to Embodiment 2 of the present utility model is a straight-line shape, and the groove 113 , The second external thread segment 13 cooperates with the screw head 14 to form a self-tapping screw, which can be flexibly installed by using a conventional flat-blade screwdriver. This arrangement makes the stud installation method of the present invention more flexible, and can be installed and fixed by using a conventional screwdriver.

The utility model provides a stud with a self-tapping screw, which has the functions of a self-tapping screw and a double-ended stud, and can be installed on parts without drilling holes or tapping, which is convenient for installation and use; The arrangement of the hexagonal cylindrical body 2, the notch 111 and the groove 112 of the new stud can facilitate the operator to use a hexagonal tool or a conventional screwdriver for fixed installation, and the installation method is more flexible.

The present invention has been described by the above-mentioned related embodiments, but the above-mentioned embodiments are only examples of implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present utility model belong to the scope of patent protection of the present utility model.

Claims (6)

1. a kind of stud with self-tapping screw, it is characterised in that including stud ontology and hexagonal trunk portion, the stud ontology It is an integral molding structure with the hexagonal trunk portion, the central axes weight of the central axes of the stud ontology and the hexagonal trunk portion It closes；The stud ontology includes the first external thread section, cylindrical body portion, the second external thread section and screw terminal, the hexagonal trunk portion Positioned at the centre of first external thread section and the cylindrical body portion, second external thread section is located at the cylindrical body portion and institute State the centre of screw terminal；The outer diameter of first external thread section is equal with the outer diameter of second external thread section, the screw terminal Surface have external screw thread；The top surface of first external thread section is provided with notch and groove, and the notch is regular hexagon, institute State notch correspond to the stud ontology central axes, the groove from the stud ontology the notch center of inside to Sunken inside is formed.

2. as described in claim 1 with the stud of self-tapping screw, which is characterized in that the surface in the cylindrical body portion is smooth.

3. as described in claim 1 with the stud of self-tapping screw, which is characterized in that the circumscribed circle of the hexagonal trunk portion Diameter is greater than the outer diameter in the cylindrical body portion.

4. as described in claim 1 with self-tapping screw stud, which is characterized in that the screw pitch of first external thread section with The screw pitch of second external thread section is equal.

5. as described in claim 1 with the stud of self-tapping screw, which is characterized in that the notch, second external screw thread Section constitutes self-tapping screw with screw terminal cooperation or the groove, second external thread section and the screw terminal cooperate Constitute self-tapping screw.

6. as described in claim 1 with the stud of self-tapping screw, which is characterized in that the groove is cross or a word Shape.