Hand screw

Abstract

The invention discloses a hand screw which comprises a screw body and a hand screwing part, the screw body is composed of a screw rod and a nut, the nut is of a radial structure, and a notch is formed in the end of each emitting strip of the nut; and the hand screwing part is fixed on the screw main body and completely wraps the screw cap. According to the screw, the hand screwing part is fixed to the screw body and completely wraps the nut, the hand screwing part is integrally formed and completely wraps the nut, and therefore the hand screwing part cannot be separated from the screw body; the nut is of a radial structure, a notch is formed in the end of each emission strip of the nut, the multiple notches can improve the connecting performance of the nut and the hand screwing part, and the stability of the nut and the hand screwing part is better; the directions of the notches of the adjacent emission strips are opposite, and the notches in the opposite directions can ensure that the nut and the hand screwing part are well stressed no matter the hand screwing screw is rotated forwards and backwards.

Description

Technical Field

[0001] The invention relates to the technical field of screws, in particular to a hand-tightened screw. Background Art

[0002] Screws are a type of fastener commonly used in daily life and industry, while hand screws can be used between two workpieces that need to be frequently disassembled or connected. They can be easily disassembled or connected by hand without the aid of tools.

[0003] A hand screw disclosed in the existing publication number CN205744817U includes a plastic head and a screw rod, which solves the problem that the screw rod of the existing hand screw is easy to fall out of the plastic head. The key points of the technical solution are that an anti-falling part is arranged on the screw rod, and a plurality of raised fixing blocks are radially arranged on the anti-falling part. When the screw rod rotates, the fixing block is tightly connected with the plastic head, and the screw rod is not easy to fall out of the plastic head.

[0004] Although the prior art solves the problem of the plastic head falling off to a certain extent, the plastic head still falls off after being used for a period of time. In order to solve the above technical problem, we propose a hand-tightened screw. Summary of the invention

[0005] The object of the present invention is to provide a hand screw to solve the problem that the plastic head in the prior art still falls off after being used for a period of time.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a hand-tightened screw, comprising a screw body and a hand-tightened part, wherein the screw body is composed of a screw rod and a nut, the nut is in an emitting structure, and a notch is provided at the end of each emitting bar of the nut; the hand-tightened part is fixed on the screw body and completely wraps the nut.

[0007] Preferably, the number of the nut firing bars is 2-6, the notches of adjacent firing bars are in opposite directions, and the angles between adjacent firing bars are provided with arc chamfer structures.

[0008] Preferably, the notch is a right-angled triangle structure, and the lengths of the two right-angled sides are different.

[0009] Preferably, the number of the nut launching strips is 4.

[0010] Preferably, the hand-tightening portion is a truncated cone-shaped structure, and a groove is formed at one end of the hand-tightening portion away from the screw body.

[0011] Preferably, the cross-section of the groove is an arc-shaped structure, and the radius of the groove is 15 mm.

[0012] Preferably, a circular groove is provided in the middle of the hand-twisting part away from the groove, an annular groove is provided at the edge of the hand-twisting part away from the groove, and an anti-slip groove is provided on the outside of the hand-twisting part.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The hand-tightening part is fixed on the screw body and completely wraps the nut. The hand-tightening part is integrally formed to completely wrap the nut, so that the hand-tightening part will not separate from the screw body; the nut has a radiating structure, and a notch is provided at the end of each radiating bar of the nut. Multiple notches can improve the connection performance between the nut and the hand-tightening part, making the nut and the hand-tightening part more stable; the notches of adjacent radiating bars are in opposite directions. The notches in opposite directions can ensure that the nut and the hand-tightening part are well stressed regardless of whether the hand-tightening screw is turned forward or reversely.

[0015] 2. The notch is a right-angled triangle structure, and the lengths of the two right-angled sides are different. The notch of the above shape can ensure the connection performance between the nut and the hand-tightening part. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 The present invention Figure 1 Schematic diagram of the structure from the bottom perspective;

[0019] Figure 3 The present invention Figure 1 A top view of

[0020] Figure 4 is a cross-sectional view of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the screw body of the present invention;

[0022] Figure 6 The present invention Figure 5 Schematic diagram of the structure from the bottom perspective;

[0023] Figure 7 It is a top view of the screw body of the present invention.

[0024] In the figure: 1, hand-tightening part; 2, screw body; 11, groove; 12, anti-slip pattern; 13, circular groove; 14, annular groove; 21, screw rod; 22, nut; 221, notch; 222, arc chamfer structure. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention.

[0026] See also Figure 1-7 In an embodiment of the present invention, a hand-tightened screw includes a screw body 2 and a hand-tightened part 1. The screw body 2 is composed of a screw rod 21 and a nut 22. The nut 22 is a radiating structure. A notch 221 is provided at the end of each radiating bar of the nut 22. The plurality of notches 221 can improve the connection performance between the nut 22 and the hand-tightened part 1, so that the nut 22 and the hand-tightened part 1 are more stable; the hand-tightened part 1 is fixed on the screw body 2 and completely wraps the nut 22. The hand-tightened part 1 is integrally formed to completely wrap the nut 22, so that the hand-tightened part 1 will not separate from the screw body 2.

[0027] The number of the nut 22 firing strips is 2-6, and the notches 221 of adjacent firing strips are in opposite directions. The notches in opposite directions can ensure that the nut 22 and the hand-tightening part 1 are well stressed regardless of whether the hand-tightening screw is turned forward or reversely. The angles between adjacent firing strips are provided with arc chamfer structures 222; the notches 221 are right-angled triangle structures, and the lengths of the two right-angled sides are different. The notches 221 of the above shape can ensure the connection performance between the nut 22 and the hand-tightening part 1; the number of the nut 22 firing strips is 4.

[0028] The hand-tightening part 1 is a truncated cone-shaped structure. A groove 11 is provided at one end of the hand-tightening part 1 away from the screw body 2, which can be used in conjunction with a corresponding screwdriver and has more diverse functions. The cross-section of the groove 11 is an arc-shaped structure, and the radius of the groove 11 is 15 mm. A circular groove 13 is provided in the middle of one end of the hand-tightening part 1 away from the groove 11, and an annular groove 14 is provided at the edge of one end of the hand-tightening part 1 away from the groove 11. Anti-slip grooves 12 are provided on the outside of the hand-tightening part 1, which have a good anti-slip effect.

[0029] The working principle of the present invention is: the hand-tightening part 1 is fixed on the screw body 2 and completely wraps the nut 22. The hand-tightening part 1 is integrally formed to completely wrap the nut 22, so that the hand-tightening part 1 will not separate from the screw body 2; the nut 22 has a radiating structure, and a notch 221 is provided at the end of each radiating bar of the nut 22. The multiple notches 221 can improve the connection performance between the nut 22 and the hand-tightening part 1, so that the nut 22 and the hand-tightening part 1 are more stable; the notches 221 of adjacent radiating bars are in opposite directions, and the notches in opposite directions can ensure that the nut 22 and the hand-tightening part 1 are well stressed regardless of whether the hand-tightening screw is turned forward or reversely; the notch 221 is a right-angled triangle structure, and the lengths of the two right-angled sides are different. The notch 221 of the above shape can ensure the connection performance between the nut 22 and the hand-tightening part 1.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hand screw, characterized in that: The invention comprises a screw body (2) and a hand-tightening part (1), wherein the screw body (2) is composed of a screw rod (21) and a nut (22), the nut (22) is in a radiating structure, and a notch (221) is provided at the end of each radiating bar of the nut (22); the hand-tightening part (1) is fixed on the screw body (2) and completely wraps the nut (22).

2. A hand screw according to claim 1, characterized in that: The number of the nut (22) firing bars is 2-6, the notches (221) of adjacent firing bars are in opposite directions, and the angles between adjacent firing bars are all provided with arc chamfer structures (222).

3. A hand screw according to claim 2, characterized in that: The notch (221) is a right-angled triangle structure, and the lengths of the two right-angled sides are different.

4. A hand screw according to claim 2 or 3, characterized in that: The number of the nut (22) emission bars is 4.

5. A hand screw according to claim 1, characterized in that: The hand-tightening portion (1) is a truncated cone-shaped structure, and a groove (11) is provided at one end of the hand-tightening portion (1) away from the screw body (2).

6. A hand screw according to claim 5, characterized in that: The cross section of the groove (11) is an arc-shaped structure, and the radius of the groove (11) is 15 mm.

7. A hand screw according to claim 5 or 6, characterized in that: A circular groove (13) is provided in the middle of the hand-tightening portion (1) at one end away from the groove (11), an annular groove (14) is provided at the edge of the hand-tightening portion (1) at one end away from the groove (11), and anti-slip grooves (12) are provided on the outside of the hand-tightening portion (1).

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