Anti-skid combined screw

Abstract

The utility model discloses an antiskid combined screw which comprises an end, a screw rod is fixedly connected to the position, close to the middle, of the bottom of the end, a spring washer is arranged on the position, close to the top end, of the screw rod in a sleeved mode, a flat washer is arranged on the position, close to the lower portion of the spring washer, of the screw rod in a sleeved mode, and limiting blocks are fixedly connected to the inner walls of the left side and the right side of the flat washer. Limiting grooves matched with the limiting blocks are formed in the side walls of the left side and the right side of the screw rod, a plurality of evenly-distributed flower tooth grooves are formed in the bottom of the flat pad, a nut is in threaded connection with the position, close to the middle, of the screw rod, and through a series of structures, the device has the advantages of being long in service life, good in anti-skid effect and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of combined screws, in particular to an anti-slip combined screw. Background Art

[0002] A combined screw refers to a combined component in which a screw is paired with a spring washer and then paired with a flat washer and fastened together by rolling threads. A two-component screw refers to a combined component in which a screw is only paired with a spring washer or only paired with a flat washer, or can also be only paired with a serrated washer. When the existing combined screws are installed or disassembled, they usually can only be used with one type of tool. After the top of the screw is worn after long-term use, it is not conducive to use, which limits the service life of the screw. In addition, the screw will inevitably become loose after being used for a long time. For this reason, we propose an anti-slip combined screw. Summary of the Utility Model

[0003] The technical problem solved by the utility model is to overcome the defects of the prior art and provide an anti-slip combined screw.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] An anti-slip combined screw, including a head, a screw rod is fixedly connected to the bottom of the head near the middle, a spring washer is sleeved on the screw rod near the top, a flat washer is sleeved on the screw rod below the spring washer, and a nut is threadedly connected to the screw rod near the middle.

[0006] Preferably, limiting blocks are fixedly connected to the inner walls of the left and right sides of the flat washer, and limiting grooves matching the limiting blocks are opened on the left and right side walls of the screw rod.

[0007] Preferably, a plurality of uniformly distributed serrated grooves are opened at the bottom of the flat washer.

[0008] Preferably, a rubber anti-slip pad is sleeved on the screw rod above the nut.

[0009] Preferably, the head is provided in a regular polygon shape.

[0010] Preferably, a regular polygon groove is opened at the top of the head.

[0011] Preferably, a cross groove is opened at the bottom of the inner cavity of the regular polygon groove.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In this technical solution, through the setting of the regular polygon at the end, the regular polygon groove and the cross groove opened at the top, the screw can cooperate with various external tools such as a socket wrench, an internal angle wrench, and a cross screwdriver. When there is wear on the side wall or somewhere inside the end, other tools can also be used, thus effectively extending the service life of the screw; through the setting of the serrated groove at the bottom of the flat washer and the rubber anti-slip pad, the friction between it and the material can be effectively increased, thereby effectively achieving an anti-slip effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural view of the present utility model;

[0015] Figure 2 is a three-dimensional view of the end and the screw rod of the present utility model;

[0016] Figure 3 is a bottom view of the flat washer of the present utility model;

[0017] Figure 4 is Figure 1 an enlarged view of part A in

[0018] Reference numerals in the figures: 1, end; 2, regular polygon groove; 3, cross groove; 4, flat washer; 5, nut; 6, screw rod; 7, rubber anti-slip pad; 8, spring washer; 9, limit block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-4, the present utility model provides a technical solution: an anti-slip combined screw, including a head 1, characterized in that: a screw rod 6 is fixedly connected to the bottom of the head 1 near the middle, a spring washer 8 is sleeved on the screw rod 6 near the top, a flat washer 4 is sleeved on the screw rod 6 below the spring washer 8, limiting blocks 9 are fixedly connected to the inner walls on both the left and right sides of the flat washer 4, and limiting grooves matching the limiting blocks 9 are provided on both the left and right side walls of the screw rod 6. A plurality of uniformly distributed serrated grooves are provided at the bottom of the flat washer 4. A nut 5 is threadedly connected to the screw rod 6 near the middle, and a rubber anti-slip pad 7 is sleeved on the screw rod 6 above the nut 5. The head 1 is provided with a regular polygon, a regular polygon groove 2 is provided at the top of the head 1, and a cross groove 3 is provided at the bottom of the inner cavity of the regular polygon groove 2. Through the regular polygon setting of the head 1, the regular polygon groove 2 provided at the top and the cross groove 3, the screw can cooperate with various external tools such as socket wrenches, internal angle wrenches, and cross screwdrivers. When there is wear at a certain place on the side wall or inside of the head 1, other tools can also be used, thereby effectively prolonging the service life of the screw; through the serrated grooves at the bottom of the flat washer 4 and the rubber anti-slip pad 7, the friction between it and the material can be effectively increased, thereby effectively achieving an anti-slip effect.

[0021] Working principle: During use, the regular polygon setting of the head 1, the regular polygon groove 2 and the cross groove 3 at the top can respectively correspond to the use of various tools such as socket wrenches, internal angle wrenches, and cross screwdrivers. When there is wear at a certain place, such as on the outer wall and the socket wrench cannot be used, the other two methods can also be used to continue using, thereby prolonging the service life of the screw. After the screw is installed, the serrated grooves and the rubber anti-slip pad 7 can play a good anti-slip effect under the extrusion between the head 1 and the nut 5.

[0022] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A non-slip combination screw, comprising a head (1), characterized in that: A screw rod (6) is fixedly connected to the bottom of the end head (1) near the middle, a spring washer (8) is sleeved on the screw rod (6) near the top, a flat washer (4) is sleeved on the screw rod (6) near the bottom of the spring washer (8), and a nut (5) is threadedly connected to the screw rod (6) near the middle.

2. The anti-slip combination screw according to claim 1, characterized in that: The inner walls on the left and right sides of the flat washer (4) are fixedly connected to limit blocks (9), and the side walls on the left and right sides of the screw rod (6) are provided with limit grooves matching the limit blocks (9).

3. The anti-slip combination screw according to claim 1, characterized in that: The bottom of the flat pad (4) is provided with a plurality of evenly distributed tooth grooves.

4. The anti-slip combination screw according to claim 1, characterized in that: A rubber anti-skid pad (7) is sleeved on the screw rod (6) near the upper part of the nut (5).

5. The anti-slip combination screw according to claim 1, characterized in that: The end head (1) is arranged in the shape of a regular polygon.

6. The anti-slip combination screw according to claim 1, characterized in that: A regular polygonal groove (2) is provided on the top of the end head (1).

7. The anti-slip combination screw according to claim 6, characterized in that: A cross groove (3) is provided at the bottom of the inner cavity of the regular polygonal groove (2).

Images