CN217519046U

CN217519046U - Spring screw

Info

Publication number: CN217519046U
Application number: CN202221713011.0U
Authority: CN
Inventors: 郭书琴; 杨继
Original assignee: Dongguan Jinri Hardware Products Co ltd
Current assignee: Dongguan Jinri Hardware Products Co ltd
Priority date: 2022-07-05
Filing date: 2022-07-05
Publication date: 2022-09-30
Anticipated expiration: 2032-07-05

Abstract

The utility model belongs to part for the equipment fixing especially relates to a spring screw. A spring screw, comprising: the head is provided with a sunk groove on the end face of the head, the head is fixedly connected with the fixing rod, the fixing rod is fixedly connected with the threaded rod, the fixing rod is sleeved with a spring, the head is internally and rotatably provided with a rotating disc, the lower surface of the rotating disc is provided with a latch, the bottom of the head is provided with a spring hole, the inside of the head is hollow, the spring hole is communicated with the inside of the head, and one end of the spring penetrates into the spring hole. After the screw is installed, the spring has elasticity to the equipment, thereby playing the effect of screw fastening and preventing the equipment from vibrating to loosen the screw.

Description

Spring screw

Technical Field

The utility model belongs to part for the equipment fixing especially relates to a spring screw.

Background

Spring screws are common parts when component assembly equipment is installed. When the equipment is fastened by using the screws, workers may detach the screws at other positions due to the lack of the screws, so that the equipment is unstable; or someone steals and disassembles the equipment to screw down the screw, thereby facilitating the transfer. Vibration is generated in the operation process after the equipment is installed, so that screwed screws are loosened due to vibration.

SUMMERY OF THE UTILITY MODEL

For solving the problem that exists among the background art, the utility model provides a spring screw, this spring screw has the function of theftproof.

In order to realize the purpose, the utility model discloses a technical scheme as follows:

a spring screw, comprising: the head is provided with a sunk groove on the end face of the head, the head is fixedly connected with the fixing rod, the fixing rod is fixedly connected with the threaded rod, the fixing rod is sleeved with a spring, the head is internally and rotatably provided with a rotating disc, the lower surface of the rotating disc is provided with a latch, the bottom of the head is provided with a spring hole, the inside of the head is hollow, the spring hole is communicated with the inside of the head, and one end of the spring penetrates into the spring hole.

Further, in a natural state, the inner diameter of the upper end of the spring is smaller than the diameter of the fixed rod.

Further, the inner diameter of the spring is gradually increased from top to bottom.

Further, the rotary disk and the head are threadedly connected.

Furthermore, a circular hole is formed in the middle of the cross groove in the upper end of the head and communicated with the inside of the head, a stop block is fixedly arranged on the upper surface of the rotating disc, and the stop block upwards extends out of the circular hole in the head.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. after the screw is installed, the upper surface of the stop block is slightly lower than the upper surface of the head, so that the screwdriver is prevented from entering the cross groove of the head again, and a certain anti-theft effect is achieved.

2. After the screw is installed, the spring has elasticity on the equipment, so that the screw fastening effect is achieved, and the equipment is prevented from vibrating to loosen the screw.

Drawings

FIG. 1 is a schematic view of the general structure of the present invention;

FIG. 2 is a perspective view of the middle head of the present invention;

FIG. 3 is a schematic view of the interior of the middle head of the present invention;

fig. 4 is a schematic structural view of the rotation plate of the present invention.

In the figure: 1. a head portion; 2. a fixing rod; 3. a spring; 4. a threaded rod; 5. a stopper; 6. a spring hole; 7. rotating the disc; 8. and (4) clamping teeth.

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 efforts all belong to the protection scope of the present invention.

As shown in fig. 1-4, the technical solution adopted by the present invention is as follows: a spring screw comprises a head 1, a fixing rod 2 and a threaded rod 4. The head 1, the fixing rod 2 and the threaded rod 4 form a screw component, wherein the head 1 is fixedly connected with the fixing rod 2, and the fixing rod 2 is fixedly connected with the threaded rod 4. The fixed rod 2 is sleeved with a spring 3. As shown in fig. 1, the inner diameter of the spring 3 is gradually increased from the top to the bottom. The inner diameter of the upper end of the spring 3 is just slightly smaller than the diameter of the fixing rod 2, so that the fixing rod 2 clamps the spring 3.

The bottom of the head 1 is provided with a spring hole 6. The interior of the head part 1 is of a cavity structure, and the spring hole 6 is communicated with the interior of the head part 1. The head part 1 is internally provided with a rotating disk 7, and the rotating disk 7 is in threaded connection with the head part 1. The end surface of the head part 1 is provided with a cross-shaped sinking groove. The middle of the sinking groove is provided with a circular hole which is communicated with the inside of the head part 1. The upper surface of the rotating disk 7 is fixed with a stop block 5, and the stop block 5 passes through a circular hole on the head 1. Before the spring screw installation, the heavy groove bottom surface on the upper surface of dog 5 and the head 1 is at same horizontal plane, and the lower surface of rotary disk 7 is equipped with latch 8.

The working principle is as follows: when using this spring screw, the threaded rod 4 is aligned with the threaded hole provided and the spring screw is screwed in using a screwdriver inserted into the counter sink. As shown in fig. 1, in the case where the screw is screwed, the spring 3 starts to rotate with the fixing lever 2. When the bottom of the spring 3 is in contact with the equipment, the spring 3 is pressed, so that the elastic force of the spring 3 is converted into the friction force with the equipment, and the spring screw is further rotated and screwed in, so that the spring screw is rotated relative to the spring 3 due to the relative movement between the spring 3 and the fixing rod 2.

The spring screw is rotated so that the upper end of the spring 3 enters the interior of the head 1 through the spring hole 6 and contacts the latch 8 on the rotary disk 7. When the spring screw continues to rotate, the spring 3 generates friction force with the surface of the equipment, so that the spring 3 generates acting force on the rotating disc 7, and the spring 3 drives the rotating disc 7 to rotate and move towards the outer side of the head 1 along the thread direction between the head 1 and the rotating disc 7, as shown in fig. 3. The rotating disc 7 drives the stop block 5 to move upwards in a rotating way, the screwdriver is inserted into the cross-shaped sunken groove of the head 1, and the spring 3 drives the rotating disc 7 to move slowly in a rotating way due to the extrusion force of the screwdriver. The spring 3 has a twisting elastic potential energy. When the spring screw is completely screwed in, the spring 3 is subjected to the torsion force generated when the spring screw is screwed in, the screwdriver is moved away, the rotating disc 7 rotates and moves upwards under the action of the torsion force of the spring 3, so that the stop 5 blocks the cross-shaped notch on the head 1, and the torsion force of the spring 3 is removed.

After the screw is installed, the upper surface of the stop block 5 is slightly lower than the upper surface of the head 1, so that the screwdriver is prevented from entering the cross-shaped groove of the head 1 again, and a certain anti-theft effect is achieved.

After the screw is installed, the spring 3 has elasticity on the equipment, so that the screw fastening effect is achieved, and the equipment is prevented from vibrating to loosen the screw.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A spring screw, comprising: head (1), be equipped with heavy groove on head (1) terminal surface, its characterized in that, head (1) and dead lever (2) fixed connection, dead lever (2) and threaded rod (4) fixed connection, the cover has spring (3) on dead lever (2), head (1) inside rotation is equipped with rotary disk (7), the lower surface of rotary disk (7) is equipped with latch (8), the bottom of head (1) is equipped with spring hole (6), the inside of head (1) is hollow, spring hole (6) and head (1) inside intercommunication, the one end of spring (3) penetrates in spring hole (6).

2. A spring screw according to claim 1, wherein: in a natural state, the inner diameter of the upper end of the spring (3) is smaller than the diameter of the fixing rod (2).

3. A spring screw according to claim 1, wherein: the inner diameter of the spring (3) is gradually increased from top to bottom.

4. A spring screw according to claim 1, wherein: the rotating disc (7) is in threaded connection with the head (1).

5. A spring screw according to claim 1, wherein:

the improved rotary table is characterized in that a circular hole is formed in the middle of a cross groove in the upper end of the head (1) and communicated with the interior of the head (1), a stop block (5) is fixedly arranged on the upper surface of the rotary table (7), and the stop block (5) upwards extends out of the circular hole in the head (1).