CN216158049U - Primary and secondary screw - Google Patents

Abstract

The utility model discloses a primary-secondary screw, which relates to the technical field of connecting fasteners and comprises a primary nail, wherein one end of the primary nail is connected with a drill bit, the outer wall of the primary nail is provided with a plurality of rotary teeth, the outer walls of the two ends of the primary nail are provided with chip grooves, a secondary nail is arranged on the inner wall of the primary nail, a fixed disc is fixed on the outer wall of the secondary nail, a supporting block is arranged inside the fixed disc, the outer wall of the supporting block is connected with a plurality of springs, and one end of each spring is connected with a clamping block. According to the utility model, the plurality of rotary teeth are equidistantly arranged on the outer wall of the female nail, the inclined surfaces of the rotary teeth have a conveying function, wood chips are conveyed from one end of the female nail to the other end of the female nail, the chip grooves are rectangular, and the plurality of chip grooves are equidistantly distributed on the outer walls of the two ends of the female nail and flow through the chip grooves, so that the wood chips are conveniently discharged from the periphery of the female nail, and the problem that the connection is influenced by the wood chips entering when the primary and secondary screws fix the wood board is solved.

Description

Primary and secondary screw

Technical Field

The utility model relates to the technical field of connecting fasteners, in particular to a primary and secondary screw.

Background

The primary and secondary screws are called primary and secondary screws and locking screws, and are also called combined screws, the primary and secondary screws of the screw and the primary and secondary screws of the nut are called tightly fixed for use, and the primary and secondary screws can be used in places such as cases, leatherware, clothes and wood boards.

However, when the existing primary and secondary screws are used for fixing and connecting boards, the female screws can bring fine saw dust into the screw holes of the female screws in the process of penetrating the screw holes of the boards, the saw dust can influence the combination of the primary and secondary screws when the primary and secondary screws are connected, and the secondary screws are installed inside the female screws and are easy to shake due to the fact that the matching precision of the secondary screws and the primary screws is poor due to the manufacturing error of a factory.

Disclosure of Invention

The utility model aims to: in order to solve the problem that wood chips enter to influence connection when the existing primary and secondary screws are used for fixing a wood board, and the primary and secondary screws are easy to shake in the primary screw due to manufacturing errors, the primary and secondary screws are provided.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a primary and secondary screw, includes female nail, the one end of female nail is connected with the drill bit, the outer wall of female nail is provided with a plurality of rotatory teeth, the outer wall at female nail both ends is provided with the chip groove, the sub-nail is installed to the inner wall of female nail, and the outer wall of sub-nail is fixed with the fixed disk, the inside supporting shoe that is provided with of fixed disk, and the outer wall connection of supporting shoe has a plurality of springs, every the one end of spring is connected with the fixture block.

Preferably, the end face of the rotating tooth is an inclined plane, and the plurality of rotating teeth are arranged on the outer wall of the female nail at equal intervals.

Preferably, one end of the female nail is provided with a hole groove matched with the drill bit, and the drill bit is welded with the female nail.

Preferably, the chip grooves are rectangular, and the plurality of chip grooves are equidistantly distributed on the outer walls of the two ends of the female nail.

Preferably, the inner wall of the female nail is provided with a plurality of grooves matched with the clamping blocks, and the supporting block is connected with the clamping blocks through springs.

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

1. the rotary teeth are arranged on the outer wall of the female nail at equal intervals, the inclined surfaces of the rotary teeth have a conveying function, wood chips are conveyed from one end of the female nail to the other end of the female nail, the chip grooves are rectangular, the chip grooves are distributed on the outer walls of the two ends of the female nail at equal intervals and flow through the chip grooves, the wood chips are conveniently discharged from the periphery of the female nail, and the problem that the connection is influenced by the wood chips when the primary and secondary screws fix the wood board is solved;

2. according to the utility model, the plurality of grooves matched with the clamping blocks are formed in the inner wall of the female nail, the supporting blocks are connected with the clamping blocks through the springs, the male nail enters the female nail, the clamping blocks enter the grooves of the female nail due to the elasticity of the springs, and the male nail is fixed in the female nail, so that the problems of manufacturing errors of the male and female screws and easiness in shaking of the male nail in the female nail are solved.

Drawings

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

FIG. 2 is a side view of the present invention;

fig. 3 is a fixture block connection diagram of the present invention.

In the figure: 1. a female nail; 2. a drill bit; 3. rotating the teeth; 4. a chip groove; 5. sub-nails; 6. fixing the disc; 7. a support block; 8. a spring; 9. and (7) clamping blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following describes an embodiment of the present invention based on its overall structure.

Referring to fig. 1-3, a primary and secondary screw includes a primary nail 1, one end of the primary nail 1 is connected with a drill bit 2, the outer wall of the primary nail 1 is provided with a plurality of rotary teeth 3, the outer walls of both ends of the primary nail 1 are provided with chip grooves 4, the inner wall of the primary nail 1 is provided with a secondary nail 5, the outer wall of the secondary nail 5 is fixed with a fixed disc 6, a supporting block 7 is arranged inside the fixed disc 6, the outer wall of the supporting block 7 is connected with a plurality of springs 8, and one end of each spring 8 is connected with a clamping block 9.

Please refer to fig. 1, the end surface of the rotating tooth 3 is an inclined surface, and the plurality of rotating teeth 3 are equidistantly arranged on the outer wall of the female nail 1, one end of the female nail 1 connected with the drill bit 2 is aligned to the screw hole on the wood board, and then is rotatably inserted into the screw hole, and the inclined surface of the rotating tooth 3 has a conveying function, so that the sawdust can be conveyed from one end of the female nail 1 to the other end.

Please refer to fig. 1, one end of the female nail 1 is provided with a hole slot matching with the drill bit 2, and the drill bit 2 is welded with the female nail 1, when the female nail 1 encounters an obstruction in the screw hole of the wood board when passing through the screw hole of the wood board, the female nail 1 is rotated, and the drill bit connected with one end of the female nail 1 breaks the obstruction in the screw hole of the wood board, so that the female nail 1 can conveniently pass through the screw hole of the wood board.

Please refer to fig. 2, the chip discharge slots 4 are rectangular, and a plurality of chip discharge slots 4 are equidistantly distributed on the outer wall of the two ends of the female nail 1, so that the wood chips are conveyed from one end of the female nail 1 to the other end and flow through the chip discharge slots 4, thereby facilitating the discharge of the wood chips from the periphery of the female nail 1.

Please refer to fig. 3, the inner wall of the female nail 1 is provided with a plurality of grooves matching with the clamping blocks 9, the supporting blocks 7 are connected with the clamping blocks 9 through the springs 8, the sub-nail 5 enters the female nail 1, the clamping blocks 9 enter the grooves of the female nail 1 due to the elasticity of the springs 8, and the sub-nail 5 is fixed inside the female nail 1, so as to prevent the manufacturing error of the male and female screws, and the sub-nail 5 is easy to shake inside the female nail 1.

The working principle is as follows: when the primary and secondary screw is used, a hole groove matched with a drill bit 2 is formed in one end of a primary screw 1, the drill bit 2 is welded with the primary screw 1, when the primary screw 1 penetrates through a screw hole of a wood board and is blocked, the primary screw 1 is rotated, the drill bit connected with one end of the primary screw 1 can break the block in the screw hole of the wood board, the end face of a rotating tooth 3 is an inclined face, a plurality of rotating teeth 3 are arranged on the outer wall of the primary screw 1 at equal intervals, one end, connected with the drill bit 2, of the primary screw 1 is aligned to the screw hole in the wood board and then is inserted into the screw hole in a rotating mode, the inclined face of the rotating tooth 3 has a conveying function, wood chips are conveyed from one end of the primary screw 1 to the other end, the chip grooves 4 are rectangular in shape, the chip grooves 4 are distributed on the outer walls of the two ends of the primary screw 1 at equal intervals and flow through the chip grooves 4, so that the wood chips can be conveniently discharged from the periphery of the primary screw 1, and the problem that the connection is influenced by the entering of the chip grooves when the wood board is solved, female 1's inner wall is provided with a plurality ofly and matches the recess with fixture block 9, and supporting shoe 7 passes through spring 8 and is connected with fixture block 9, and during sub-nail 5 got into female nail 1, fixture block 9 got into female 1's groove department because of spring 8's elasticity, fixes sub-nail 5 in female 1's inside, is convenient for prevent primary and secondary screw manufacturing error, and sub-nail 5 rocks in 1 inside production of female nail easily.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (5)

1. The utility model provides a primary and secondary screw, includes female nail (1), its characterized in that: the one end of female nail (1) is connected with drill bit (2), the outer wall of female nail (1) is provided with a plurality of rotatory teeth (3), the outer wall at female nail (1) both ends is provided with chip groove (4), sub-nail (5) are installed to the inner wall of female nail (1), and the outer wall of sub-nail (5) is fixed with fixed disk (6), fixed disk (6) inside is provided with supporting shoe (7), and the outer wall of supporting shoe (7) is connected with a plurality of springs (8), every the one end of spring (8) is connected with fixture block (9).

2. A snap screw according to claim 1, characterised in that: the end face of the rotating tooth (3) is an inclined plane, and the rotating teeth (3) are arranged on the outer wall of the female nail (1) at equal intervals.

3. A snap screw according to claim 1, characterised in that: one end of the female nail (1) is provided with a hole groove matched with the drill bit (2), and the drill bit (2) is welded with the female nail (1).

4. A snap screw according to claim 1, characterised in that: the shape of chip groove (4) is the rectangle, and a plurality of chip grooves (4) equidistance distribute at the outer wall at female nail (1) both ends.

5. A snap screw according to claim 1, characterised in that: the inner wall of the female nail (1) is provided with a plurality of grooves matched with the clamping blocks (9), and the supporting blocks (7) are connected with the clamping blocks (9) through springs (8).

Images