CN217761666U - Loose-proof screw - Google Patents

Abstract

The utility model relates to a screw is not pulled off to pine, including screw body, guide sleeve and spring, screw body bottom is equipped with the screw thread, and guide sleeve one end is equipped with the fixture block, and the other end is equipped with the fixed block, and the screw body passes guide sleeve and fixed block to sliding connection with it, the one end that guide sleeve was kept away from to the fixed block is equipped with the fastener, and the spring housing is established in the outside of guide sleeve and screw body, and when the spring compression, the fixture block is at the screw thread top with the unthreaded section sliding connection of screw body, when the spring resumes, the fixture block. The utility model effectively solves the problems that the screw is easy to scatter when being disassembled and is inconvenient to disassemble in a narrow space through the matching design of the screw body, the guide sleeve, the spring, the clamping block and the fastening piece; simultaneously the utility model discloses the installation is convenient, smooth and easy, can take the mode of blind dress to solve the inconvenient problem of hole.

Description

Non-loose screw

Technical Field

The utility model belongs to the fastener field, in particular to screw is not pulled off to pine.

Background

The screw is a tool for fastening the parts of the object step by utilizing the physics and mathematical principles of the inclined circular rotation and friction of the object. The screw is a general term for fasteners, and is an indispensable industrial necessity in daily life.

In the process of disassembling and assembling screws used by common products, the disassembled screws can be separated from the products, the screws need to be carefully stored after being disassembled, and the screws are easy to scatter on the installation site; a cross screwdriver or a straight screwdriver is generally used in the screw dismounting process, and in a narrow space, dismounting is inconvenient due to space limitation.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a screw is not deviate to the not enough of prior art, through the cooperation design of screw body, guide sleeve, spring, fixture block and fastener, effectively solve the screw and unpack apart the inconvenient problem of dismantling in easy scattering, the narrow and small space.

The utility model discloses the technical scheme who adopts:

the utility model provides a screw is not pulled off to pine, includes screw body, guide sleeve and spring, screw body bottom is equipped with the screw thread, guide sleeve one end is equipped with the fixture block, and the other end is equipped with the fixed block, the screw body passes guide sleeve and fixed block to sliding connection with it, the one end that guide sleeve was kept away from to the fixed block is equipped with the fastener, the outside at guide sleeve and screw body is established to the spring housing, and when the spring compression, the fixture block was at the screw thread top with the unthreaded section sliding connection of screw body, when the spring resumes, the fixture block.

Furthermore, a rotating groove is formed in the top face of the head of the screw body.

Furthermore, the rotating groove is in a straight line shape or a cross shape.

Furthermore, the top of the screw body is detachably provided with a rotating handle.

Further, the fastener is an annular pressing sheet.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a cooperation design of screw body, guide sleeve, spring, fixture block is turned over the annular preforming outwards through the instrument after the installation, but the locking fixture, during the loose screw, under the effect of spring, fixture block and screw thread top block can realize the screw pine and the effect that does not come off, effectively solve the screw and unpack apart the problem of scattering easily, and simple installation, suitability are strong, can take the mode of blind dress to solve the inconvenient problem in hole.

2. The screw body top dismantlement formula is equipped with rotatory handle, when the screwdriver of not being convenient for in narrow and small space is screwed up, can screw up or dismantle the screw through rotating rotatory handle, convenient and fast.

Drawings

FIG. 1 is an exploded view of the components of the present invention;

FIG. 2 is a schematic structural view of the utility model before installation;

FIG. 3 is a schematic view of the structure of the utility model after installation;

FIG. 4 is a state diagram of the present invention in disassembly without detachment;

in the figure: 1. rotating the handle; 2. a screw body; 3. a thread; 4. a spring; 5. a fixed block; 6. a fastener; 7. a guide sleeve; 8. and (6) clamping blocks.

Detailed Description

In order to better understand the technical content of the present invention, the following embodiments are provided, and the present invention is further described with reference to the accompanying drawings.

Referring to fig. 1 to 3, the utility model provides a screw is not pulled off to pine, including screw body 2, guide sleeve 7 and spring 4, 2 bottoms of screw body are equipped with screw thread 3, 7 one end of guide sleeve is equipped with fixture block 8, the other end is equipped with fixed block 5, screw body 2 passes guide sleeve 7 and fixed block 5, and sliding connection therewith, the one end that guide sleeve 7 was kept away from to fixed block 5 is equipped with fastener 6, fastening part 6 is used for the installation back locking fixture, fastener 6 can choose annular preforming for use, turn over the annular preforming outwards through the instrument after the screw installation, can lock the fixture, spring 4 cover is established in the outside of guide sleeve 7 and screw body 2, during the installation, spring 4 compresses, fixture block 8 and screw body 2's unthreaded section sliding connection, during the dismantlement, spring 4 resumes elastic deformation, elastic action through spring 4, make 8 blocks in the escape groove department of screw thread 3, thereby realize the screw pine and the effect that does not pull off.

Specifically, the top surface of the head of the screw body 2 is provided with a rotating groove which can be in a straight shape or a cross shape, so that the screw can be screwed or dismounted conveniently by using a straight screwdriver or a cross screwdriver.

Specifically, 2 top dismantlement formulas of screw body are equipped with rotatory handle 1, and when the space is narrow and small, when the screwdriver of not being convenient for use, through rotating rotatory handle, can screw up or dismantle screw, convenient and fast.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (5)

1. A kind of loose screw, its characteristic is: including screw body, guide sleeve and spring, screw body bottom is equipped with the screw thread, guide sleeve one end is equipped with the fixture block, and the other end is equipped with the fixed block, the screw body passes guide sleeve and fixed block to sliding connection with it, the one end that guide sleeve was kept away from to the fixed block is equipped with the fastener, the spring housing is established in the outside of guide sleeve and screw body, and when the spring compression, the non-threaded section sliding connection of fixture block and screw body, when the spring resumes, the fixture block is at the screw thread top.

2. A captive screw according to claim 1, wherein: the top surface of the head of the screw body is provided with a rotating groove.

3. A captive screw according to claim 2, wherein: the rotating groove is in a straight line shape or a cross shape.

4. A captive screw according to claim 1, wherein: the top of the screw body is detachably provided with a rotary handle.

5. A captive screw according to claim 1, wherein: the fastener is an annular pressing sheet.

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