Fastening screw easy to use

Abstract

The utility model provides an easy-to-use fastening screw, and relates to the technical field of screw parts, the easy-to-use fastening screw comprises a screw main body, the screw main body comprises a screw head, a screw rod arranged at the bottom of the screw head and a conical head arranged at the bottom of the screw rod, and a fastener is arranged in the screw rod. The fastening piece can be screwed in along the axis of the screw rod and in the vertical reverse direction relative to the axis of the screw rod, the limiting piece is arranged in the screw rod, and the limiting piece can move towards the outer side of the screw rod when the fastening piece is screwed in the reverse direction relative to the screw rod. The screw can be screwed into a plate in the forward direction and the reverse direction, meanwhile, the limiting piece can perpendicularly penetrate into the plate relative to the screw, the screw can be tighter and tighter no matter the plate drives the screw to rotate forwards or reversely, and therefore the use stability of the screw can be improved.

Description

Technical Field

[0001] This utility model relates to the field of screw parts technology, and more specifically, to an easy-to-use fastening screw. Background Technology

[0002] A screw is a tool that uses the physical and mathematical principles of inclined planes, circular rotation, and friction to gradually tighten objects and machine parts. Screw is a general term for fasteners, typically consisting of a screw head and a screw shank. The screw shank is fixedly connected to the screw head, and the screw shank has threads. The screw shank usually has a pointed tip and a relatively large thread pitch, and is generally used to fasten wooden or plastic parts.

[0003] Currently, when screws are screwed into the board to fix it, the screw can easily rotate slightly in the opposite direction when the screw head is hit or when the board using the screw vibrates due to operation. Over time, this will cause the screw to loosen, resulting in a decrease in the fixing effect of the screw. Utility Model Content

[0004] The purpose of this invention is to address the problem that existing easy-to-use fastening screws cannot prevent the screw from turning back and loosening when the screw head is hit or when the material using the screw vibrates during operation.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0006] An easy-to-use fastening screw includes a screw body, the screw body comprising a screw head, a screw shank disposed at the bottom of the screw head, and a tapered tip disposed at the bottom of the screw shank, and further comprising:

[0007] A fastener disposed inside a screw rod, the fastener being capable of being screwed in the opposite direction to the vertical axis of the screw rod.

[0008] A limiting member is provided inside the screw rod, and the limiting member can move outward of the screw rod when the fastener is screwed in the opposite direction to the screw rod.

[0009] As a preferred technical solution of this application, the fastener includes a screw with threads inside the screw rod, a knob disposed at the top of the screw rod, and a piercing head disposed at the bottom of the screw rod.

[0010] As a preferred technical solution of this application, the screw rod and the cone head are provided with interconnected mounting cavities, the inner wall of the screw rod is provided with a partition, and the screw rod is threadedly connected to the partition.

[0011] As a preferred technical solution of this application, both the screw rod and the screw are provided with threaded grooves on their outer surfaces, and the threaded grooves on the screw rod and the screw are rotated in opposite directions.

[0012] As a preferred technical solution of this application, the limiting member includes a through opening on the outer wall of the screw rod, a piercing part slidably disposed on the inner wall of the through opening, a first ball disposed on the inner end of the piercing part located on the screw rod, and a pressure ball disposed on the outer wall of the screw rod and cooperating with the first ball.

[0013] As a preferred technical solution of this application, the limiting member further includes a crank rod disposed at the bottom of the first ball and a second ball disposed at the end of the crank rod away from the first ball.

[0014] As a preferred technical solution of this application, the bottom of the screw head is provided with a limiting ring, and the bottom of the limiting ring is provided with a cutting edge.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. The cone head allows the screw rod to be screwed into the plate first. Then, the fastener is used to reverse the knob, causing the screw rod to rotate in the opposite direction relative to the plate. The piercing head passes through the screw rod and screws it into the plate. The screw rod and the bolt are screwed into the plate from two opposite directions. Therefore, the plate shaking will cause the screw rod to get closer and closer, regardless of whether it is rotated forward or backward. This solves the problem of the screw rod loosening caused by the shaking of the plate in the existing technology.

[0017] 2. By setting the limiting component, when the reverse screw is screwed into the plate in the opposite direction to the screw rod, the downward screw will slide outwards through the pressure column, the first ball, the second ball and the curved rod, and pierce into the plate perpendicularly to the screw rod, thereby further improving the stability of the screw rod in fixing the plate. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the present invention;

[0019] Figure 2 This is a bottom view of the structure of this utility model;

[0020] Figure 3 This is a structural diagram of the present invention;

[0021] Figure 4 This is another structural diagram of the present invention;

[0022] Figure 5 This is a cross-sectional structural diagram of the present invention;

[0023] Figure 6 For the present utility model Figure 5 Enlarged structural diagram at point A in the middle.

[0024] The image shows:

[0025] 1. Screw body; 101. Screw head; 102. Screw rod; 1021. Spacer; 103. Conical head; 2. Fastener; 201. Knob; 202. Screw; 203. Puncture head; 3. Limiting component; 301. Puncture part; 302. First ball; 303. Pressure ball; 304. Crank rod; 305. Second ball; 4. Limiting ring. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0027] like Figure 1 and Figure 2 As shown, this embodiment proposes an easy-to-use fastening screw, including a screw body 1. The screw body 1 includes a screw head 101, a screw rod 102 disposed at the bottom of the screw head 101, and a cone head 103 disposed at the bottom of the screw rod 102. It also includes a fastener 2 and a limiting member 3. The fastener 2 is disposed inside the screw rod 102 and can be screwed in the opposite direction to the vertical axis of the screw rod 102. The limiting member 3 is disposed inside the screw rod 102 and can move outward of the screw rod 102 when the fastener 2 is screwed in the opposite direction to the screw rod 102.

[0028] When the screw body 1 is in use, the screw rod 102 is first screwed into the plate using a wrench. The cone 103 at the bottom of the screw rod 102 facilitates a more stable screwing into the plate. Then, the fastener 2 is screwed into the plate in the opposite direction to the screw rod 102, thus fixing the screw body 1 in the plate in two opposite directions. Therefore, the screw body 1 will not loosen no matter whether the plate rotates forward or backward. In addition, the limiting member 3 is provided so that when the fastener 2 is screwed into the plate, it can be pressed against the outside of the screw rod 102, so that the limiting member 3 can be inserted into the plate perpendicular to the screw rod 102, further improving the stability of the screw body 1 in use.

[0029] like Figure 3 , Figure 4 and Figure 5 As shown, in a preferred embodiment, based on the above method, the fastener 2 further includes a screw 202 with threads disposed inside the screw rod 102, a knob 201 disposed on the top of the screw 202, and a piercing head 203 disposed on the bottom of the screw 202.

[0030] The screw rod 102 and the cone head 103 have interconnected mounting cavities inside. The inner wall of the screw rod 102 is provided with a partition 1021, and the screw rod 202 is threadedly connected to the partition 1021.

[0031] Both screw rod 102 and screw rod 202 have threaded grooves on their exteriors, and the threaded grooves on the exteriors of screw rod 102 and screw rod 202 have opposite directions of rotation;

[0032] The cone 103 is pressed against the plate and the screw head 101 is struck, causing the cone 103 to penetrate into the plate. Then, the screw head 101 is rotated with a wrench, causing the screw rod 102 to screw into the plate. After that, the knob 201 is rotated in the opposite direction with a screwdriver. The knob 201 will drive the screw rod 202 to move downward through the mounting cavity inside the screw rod 102, so that the screw rod 202 is screwed into the plate in the opposite direction to the screw rod 102. Since the screw rod 102 and the screw rod 202 have opposite threads, they can be screwed into the plate from two opposite directions, which improves the stability of the screw rod 102. When the plate vibrates, the screw body 1 will become tighter and tighter regardless of whether it rotates clockwise or counterclockwise.

[0033] like Figure 5 and Figure 6 As shown, in a preferred embodiment, based on the above method, the limiting member 3 further includes a through opening on the outer wall of the screw rod 102, a piercing part 301 slidably disposed on the inner wall of the through opening, a first ball 302 disposed on one end of the piercing part 301 located on the inner side of the screw rod 102, and a pressure ball 303 disposed on the outer wall of the screw rod 102 and cooperating with the first ball 302.

[0034] The limiting member 3 also includes a crank 304 disposed at the bottom of the first ball 302 and a second ball 305 disposed at the end of the crank 304 away from the first ball 302;

[0035] When the screw 202 is screwed downwards, the pressure ball 303 on the outside of the screw 202 will squeeze the first ball 302 and the piercing part 301 to slide outwards towards the screw 102 when they come into contact with the first ball 302. At this time, the piercing part 301 will penetrate the through hole in the outer wall of the screw 102 and pierce into the plate, thereby being perpendicular to the screw 102, further improving the stability of the screw 102 and preventing the screw 102 from shaking. In addition, in the initial state, the second ball 305 will abut against the screw 202, which can prevent the piercing part 301 from sliding into the screw 102 and falling into the mounting cavity.

[0036] like Figure 2 As shown, in a preferred embodiment, based on the above method, a limiting ring 4 is provided at the bottom of the screw head 101, and a cutting edge is provided at the bottom of the limiting ring 4.

[0037] When the screw rod 102 is screwed into the plate and the screw head 101 comes into contact with the surface of the plate, the screw head 101 will press the limiting ring 4 into the plate. The cutting edge makes it easier for the limiting ring 4 to be pressed into the plate, thereby further improving the stability of the screw body 1.

[0038] The working principle of this utility model is as follows: When the screw body 1 is in use, the cone 103 is pressed against the plate and the screw head 101 is struck, so that the cone 103 penetrates into the plate. Then, the screw head 101 is rotated by a wrench, so that the screw rod 102 is screwed into the plate. Then, the knob 201 is rotated in the opposite direction by a screwdriver. The knob 201 will drive the screw rod 202 to move downward through the mounting cavity inside the screw rod 102, so that the screw rod 202 is screwed into the plate in the opposite direction to the screw rod 102. Since the screw rod 102 and the screw rod 202 have opposite threads, they can be screwed into the plate from two opposite directions, which improves the stability of the screw rod 102. When the plate vibrates, the screw body 1 will become tighter and tighter regardless of whether it rotates forward or backward. Meanwhile, when the screw 202 is screwed downwards, the pressure ball 303 on the outside of the screw 202 will squeeze the first ball 302 and the piercing part 301 to slide outwards from the screw 102 when they come into contact with the first ball 302. At this time, the piercing part 301 will penetrate the through hole on the outer wall of the screw 102 and pierce into the plate, thereby being perpendicular to the screw 102, further improving the stability of the screw 102 and further preventing the screw 102 from shaking.

[0039] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present utility model.

Claims

1. An easy-to-use fastening screw, comprising a screw body (1), characterized in that, The screw body (1) includes a screw head (101), a screw shank (102) disposed at the bottom of the screw head (101), and a cone head (103) disposed at the bottom of the screw shank (102), and further includes: Fastener (2), the fastener (2) is disposed inside the screw rod (102), the fastener (2) is capable of being screwed in the opposite direction to the vertical axis of the screw rod (102); The limiting member (3) is disposed inside the screw rod (102). The limiting member (3) can move outward of the screw rod (102) when the fastener (2) is screwed in the opposite direction to the screw rod (102).

2. The easy-to-use fastening screw according to claim 1, characterized in that, The fastener (2) includes a screw (202) with threads inside the screw rod (102), a knob (201) on the top of the screw (202), and a piercing head (203) on the bottom of the screw (202).

3. The easy-to-use fastening screw according to claim 2, characterized in that, The screw rod (102) and the cone (103) have interconnected mounting cavities inside. The inner wall of the screw rod (102) is provided with a partition (1021), and the screw rod (202) is threadedly connected to the partition (1021).

4. The easy-to-use fastening screw according to claim 2, characterized in that, Both the screw rod (102) and the screw rod (202) have threaded grooves on their exteriors, and the threaded grooves on the exteriors of the screw rod (102) and the screw rod (202) have opposite directions of rotation.

5. The easy-to-use fastening screw according to claim 1, characterized in that, The limiting member (3) includes a through opening on the outer wall of the screw rod (102), a piercing part (301) slidably disposed on the inner wall of the through opening, a first ball (302) disposed on the inner end of the piercing part (301) located on the inner side of the screw rod (102), and a pressure ball (303) disposed on the outer wall of the screw rod (102) and cooperating with the first ball (302).

6. The easy-to-use fastening screw according to claim 5, characterized in that, The limiting member (3) also includes a crank (304) disposed at the bottom of the first ball (302) and a second ball (305) disposed at the end of the crank (304) away from the first ball (302).

7. The easy-to-use fastening screw according to claim 1, characterized in that, The screw head (101) has a limiting ring (4) at the bottom, and the limiting ring (4) has a cutting edge at the bottom.

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