CN218063048U

CN218063048U - Screw fastener with torsional spring self-locking function

Info

Publication number: CN218063048U
Application number: CN202220894173.2U
Authority: CN
Inventors: 赵宪猛
Original assignee: Pdmindustry Ltd
Current assignee: Pdmindustry Ltd
Priority date: 2022-04-18
Filing date: 2022-04-18
Publication date: 2022-12-16
Anticipated expiration: 2032-04-18

Abstract

The utility model discloses a screw fastener with torsional spring self-locking, which comprises a screw body and a torsional spring, wherein the screw body consists of a head part, a connecting part and a screw rod part, one end of the connecting part is fixedly connected with the head part, and the other end of the connecting part is fixedly connected with the screw rod part; the torsional spring is located the lateral surface of connecting portion, the downside of head is provided with the patchhole, the vertical ascending one end of torsional spring is for stretching into the head, the other end of torsional spring is the friction-increasing head, it stretches into in the patchhole to stretch into the head, the rotation of torsional spring and screw rod portion is to opposite. The utility model discloses in, through the torsional spring of packing into in the connecting portion department of screw, need not carry out auto-lock face processing to the screw like this, resistance when can increase the screw body and unscrew under the effect of the head that rubs that increases, and then realize the auto-lock.

Description

Screw fastener with torsional spring self-locking function

Technical Field

The utility model relates to a screw fastener field especially relates to a screw fastener with torsional spring auto-lock.

Background

The screws are generally called wood screws; the screw is the one with a sharp head at the front end, has a larger screw pitch, and is generally used for fastening wooden parts and plastic parts. The screw rod is a machine screw (mechanical screw) with a flat head at the front end, has small and uniform screw pitch, is generally used for fastening metal and machine parts, is mainly used for connecting two workpieces together to play a fastening role at present, and is used on common equipment, such as mobile phones, computers, automobiles, bicycles, various machine tools and equipment, and almost all machines are required to be used. The screw is indispensable industry requisite in daily life: such as extremely small screws used for cameras, glasses, clocks, electronics, and the like, and general screws for televisions, electric products, musical instruments, furniture, and the like. However, the common screw fastener is often loosened, and although the screw fastener which can be locked by using the wedge-shaped surface of the screw is provided, the machining requirement is better, so that the screw fastener with the self-locking torsion spring is designed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a screw fastener with torsional spring self-locking.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a screw fastener with torsion spring self-locking comprises a screw body and a torsion spring, wherein the screw body consists of a head part, a connecting part and a screw rod part, one end of the connecting part is fixedly connected with the head part, and the other end of the connecting part is fixedly connected with the screw rod part;

the torsional spring is located the lateral surface of connecting portion, the downside of head is provided with the patchhole, the vertical ascending one end of torsional spring is for stretching into the head, the other end of torsional spring is for increasing the head that rubs, it stretches into in the patchhole to stretch into the head, the rotation of torsional spring and screw rod portion is opposite, increase one side oblique cutting that the connecting portion were kept away from to the head that rubs, and be provided with at scarf department and increase the groove that rubs, it is provided with the catching groove towards one side of connecting portion to increase the head that rubs.

As a further description of the above technical solution:

the upper side of the head is provided with any one of a straight groove, a cross groove and a hexagonal groove.

As a further description of the above technical solution:

the head portion, the connecting portion and the screw portion are arranged coaxially.

As a further description of the above technical solution:

the diameter of the middle section of the torsion spring, which is positioned at the outer side, is equal to the major diameter of the screw rod part.

As a further description of the above technical solution:

one side of the friction increasing head extends out of the side face of the large-diameter part of the screw rod part by 0.5mm.

The utility model discloses following beneficial effect has:

compared with the prior art, this screw fastener with torsional spring auto-lock through the connecting portion department at the screw torsional spring of packing into, need not carry out the face processing of auto-lock to the screw like this, can increase the resistance when the screw body is unscrewed under the effect of friction-increasing head, and then realize the auto-lock.

Drawings

Fig. 1 is a first schematic structural view of a screw fastener with torsion spring self-locking according to the present invention;

fig. 2 is a bottom view of a screw fastener with torsion spring self-locking according to the present invention;

fig. 3 is a first schematic structural view of a screw fastener with torsion spring self-locking according to the present invention;

fig. 4 is an enlarged view of a portion a in fig. 2.

Illustration of the drawings:

1. a head portion; 2. a connecting portion; 3. a screw section; 4. a massage-increasing head; 5. a torsion spring; 6. an insertion hole; 7. extending the head; 8. hooking a groove; 9. and (5) a friction increasing groove.

Detailed Description

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

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the present invention provides an embodiment: a screw fastener with torsion spring self-locking comprises a screw body and a torsion spring 5, wherein the screw body consists of a head part 1, a connecting part 2 and a screw part 3, the head part 1, the connecting part 2 and the screw part 3 are coaxially arranged, a gap is reserved between the diameter of the middle section of the torsion spring 5, which is positioned at the outer side, and the outer side surface of the connecting part 2, so that a space can be provided for the deformation of the torsion spring 5, the large diameter of the screw part 3 is equal, so that the torsion spring 5 can conveniently enter the position where the screw part 3 is screwed in, one end of the torsion spring 5 and one end of the connecting part 2 are fixedly connected with the head part 1, and the other end of the connecting part 2 is fixedly connected with the screw part 3;

the torsion spring 5 is located on the outer side face of the connecting portion 2, an inserting hole 6 is formed in the lower side face of the head portion 1, one vertically upward end of the torsion spring 5 is an extending head 7, the other end of the torsion spring 5 is an friction increasing head 4 and used for improving friction force of the position side face where the torsion spring is screwed in with the screw portion 3, one side of the friction increasing head 4 extends out of the large-diameter side face of the screw portion 3 by 0.5mm, when the object is screwed in one end of the screw portion 3 of the screw body, the torsion spring 5 is deformed under the extrusion effect of the object, the torsion spring 5 is gradually attached to the connecting portion 2, when the object is screwed out of the screw body, the friction increasing head 4 of the torsion spring 5 can generate resistance when the screw body is screwed out, the extending head 7 extends into the inserting hole 6, the rotation directions of the torsion spring 5 and the screw portion 3 are opposite, one side, far away from the connecting portion 2, the friction increasing groove 9 is formed in the inclined plane, and a hook groove 8 is formed in one side, facing the connecting portion 2, of the friction increasing head 4.

The upper side of the head part 1 is provided with any one of a straight groove, a cross groove and a hexagon groove.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions on some technical features, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a screw fastener with torsional spring auto-lock which characterized in that: the screw comprises a screw body and a torsion spring (5), wherein the screw body consists of a head part (1), a connecting part (2) and a screw rod part (3), one end of the connecting part (2) is fixedly connected with the head part (1), and the other end of the connecting part (2) is fixedly connected with the screw rod part (3);

torsional spring (5) are located the lateral surface of connecting portion (2), the downside of head (1) is provided with patchhole (6), the vertical ascending one end of torsional spring (5) is for stretching into head (7), the other end of torsional spring (5) is friction increase head (4), stretch into in head (7) stretches into patchhole (6), the rotation of torsional spring (5) and screw rod portion (3) is opposite, friction increase head (4) are kept away from one side beveling of connecting portion (2), and are provided with friction increase groove (9) in scarf department, friction increase head (4) are provided with colluding groove (8) towards one side of connecting portion (2).

2. A screw fastener with torsion spring self-locking according to claim 1, wherein: the upper side of the head part (1) is provided with any one of a straight groove, a cross groove and a hexagonal groove.

3. A screw fastener with torsion spring self-locking according to claim 1, wherein: the head (1), the connecting part (2) and the screw part (3) are coaxially arranged.

4. A screw fastener with torsion spring self-locking according to claim 1, wherein: the diameter of the middle section of the torsion spring (5) which is positioned at the outer side is equal to the major diameter of the screw rod part (3).

5. A screw fastener with torsion spring self-locking according to claim 1, wherein: one side of the friction increasing head (4) extends out of the side face of the large-diameter part of the screw rod part (3) by 0.5mm.