Assembly type anti-loose self-tapping screw

Abstract

The utility model relates to the field of self-tapping screws, and particularly discloses an assembly type anti-loose self-tapping screw which comprises a self-tapping screw body, the self-tapping screw body comprises a bolt rod body and a screw head part, an embedded groove is formed in the lower surface of the screw head part, an anti-loose gasket is arranged at the position, located on the outer side of the bolt rod body, of the lower portion of the embedded groove, and the anti-loose gasket is arranged on the outer side of the bolt rod body. A clamping nail is installed on the lower surface of the anti-loose gasket, second limiting inserting holes are formed in the side surface of the anti-loose gasket in an array mode, and first limiting inserting holes are formed in the side surface of the screw head in an array mode. The head of the screw is controlled to apply pressure to the anti-loose gasket, after the clamping nail on the lower surface of the anti-loose gasket is embedded into the mounting plane, the whole positioning insertion rod is inserted into the second limiting insertion hole and the first limiting insertion hole, and therefore the resistance generated when the clamping nail is embedded into the mounting plane is matched with the whole self-locking acting force of the bolt rod body; and the self-tapping screw can be prevented from loosening.

Description

TECHNICAL FIELD

[0001] The utility model relates to the self -tapping screw field, concretely is a kind of assembled anti-loose self-tapping screw. BACKGROUND

[0002] Self-tapping screw is a kind of screw with drill bit, is completed by special electric tool construction, drilling, tapping, fixed, locks once, self-tapping screw is mainly used for the connection and fixed of some thin plate parts, self-tapping screw is often exposed in outdoor, itself has very strong corrosion resistance;Its rubber sealing ring can guarantee that screw is not water permeable and has good corrosion resistance, and the more the number of threads per inch length, the stronger the self-drilling ability.

[0003] However, the most common problem in the use of self-tapping screw is loosening, and currently, rubber gaskets are usually placed under the screw to increase friction, and the screw is prone to loosening when the rubber ages. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides an assembled anti-loose self-tapping screw, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical scheme: an assembled anti-loose self-tapping screw, comprising a self-tapping screw, the self-tapping screw comprises a bolt rod body and a screw head, an embedded groove is formed in the lower surface of the screw head, a loosening pad is arranged on the outer side of the bolt rod body below the embedded groove, a clamping nail is mounted on the lower surface of the loosening pad, second limiting insertion holes are arrayed in the side surface of the loosening pad, and first limiting insertion holes are arrayed in the side surface of the screw head.

[0006] As a further scheme of the utility model: a positioning insertion rod is arranged between the first limiting insertion hole and the second limiting insertion hole, and a tapping cone head is mounted on the lower end of the bolt rod body.

[0007] As a further scheme of the utility model: a self-tapping thread is arranged on the outer side of the bolt rod body, and a cross disc opening is formed in the upper surface of the screw head.

[0008] As a further scheme of the utility model: the outer diameter size length of the loosening pad is matched with the inner diameter size length of the embedded groove.

[0009] As a further scheme of the utility model: the clamping nail is fixedly connected with the loosening pad.

[0010] As a further scheme of the utility model: the tapping cone head is integrally fixedly connected with the bolt rod body.

[0011] As a further scheme of the utility model: the bolt rod body is fixedly connected with the screw head.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The screw head exerts pressure on the lock washer, the clamping nail on the lower surface of the lock washer is embedded into the installation plane, the positioning plug rod is inserted into the inside of the second limiting hole and the first limiting hole, and therefore the resistance of the clamping nail embedded into the installation plane cooperates with the self-locking force of the bolt rod body, so that the loosening of the self-tapping screw is prevented.

[0014] When the cross plate opening is damaged and cannot be twisted out in use, the positioning plug rod is removed, a long rod is inserted into the inside of the first limiting hole and rotated, and the dismounting purpose is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the assembled lock washer self-tapping screw.

[0016] Figure 2 It is a structural schematic view of the screw head in the assembled lock washer self-tapping screw.

[0017] Figure 3 It is a sectional view of the self-tapping screw in the assembled lock washer self-tapping screw.

[0018] Figure 4 It is a front view of the self-tapping screw in the assembled lock washer self-tapping screw.

[0019] Figure 5 It is a bottom view of the self-tapping screw in the assembled lock washer self-tapping screw.

[0020] In the drawing: 1, self-tapping screw; 2, bolt rod body; 3, screw head; 4, lock washer; 5, positioning plug rod; 6, tapping cone; 201, self-tapping thread; 301, embedded groove; 302, first limiting hole; 303, cross plate opening; 401, clamping nail; 402, second limiting hole. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] For example, Figures 1-5As shown, the present embodiment provides a kind of assembled self-tapping screw, including self-tapping screw 1, self-tapping screw 1 includes: bolt stem 2, screw head 3, the lower surface of screw head 3 is provided with embedded groove 301, the lower surface of embedded groove 301 is located the outer side of bolt stem 2 and is provided with anti-loosening washer 4, the outer diameter size length of anti-loosening washer 4 is consistent with the inner diameter size length of embedded groove 301, the lower surface of anti-loosening washer 4 is installed with clamping nail 401, clamping nail 401 is fixedly connected with anti-loosening washer 4, the side surface of anti-loosening washer 4 is arrayed and is provided with second limiting insertion hole 402, the side surface of screw head 3 is arrayed and is provided with first limiting insertion hole 302.

[0023] As shown, Figures 2-3 In the present embodiment, positioning insertion rod 5 is arranged between first limiting insertion hole 302 and second limiting insertion hole 402, attack cone head 6 is installed at the lower end of bolt stem 2, attack cone head 6 is integrally fixedly connected with bolt stem 2, self-tapping thread 201 is arranged on the outer side of bolt stem 2, cross disc mouth 303 is arranged on the upper surface of screw head 3, and bolt stem 2 is fixedly connected with screw head 3.

[0024] The working principle of the utility model is as follows: before use, first, the position to be installed is positioned on the self-tapping surface, then, the side of anti-loosening washer 4 without clamping nail 401 is sleeved on the outer side of bolt stem 2 from the lower end of attack cone head 6, anti-loosening washer 4 is pushed into embedded groove 301 and keeps force to prevent falling, attack cone head 6 is correspondingly arranged on the attack position, then, the force on anti-loosening washer 4 is released, anti-loosening washer 4 is correspondingly arranged on the self-tapping surface, then, screw driver is inserted into cross disc mouth 303 on the upper side of screw head 3 to exert torsional force, attack cone head 6 is controlled to attack a hole on the installation surface, and self-tapping thread 201 on the outer side of bolt stem 2 is used to realize the purpose of drilling and locking, when continuously rotating, screw head 3 moves downward as a whole, so that embedded groove 301 is sleeved on the outer side of anti-loosening washer 4, anti-loosening washer 4 continuously exerts pressure on the installation plane as a whole, clamping nail 401 on the lower surface of anti-loosening washer 4 is embedded in the installation plane, anti-loosening washer 4 is also embedded in embedded groove 301, one or more first limiting insertion holes 302 on the outer side of screw head 3 and second limiting insertion holes 402 on the outer side of anti-loosening washer 4 are correspondingly adjusted, positioning insertion rod 5 is inserted into the inside of second limiting insertion hole 402 and first limiting insertion hole 302, therefore, the resistance of clamping nail 401 embedded in the installation plane and the self-locking force of bolt stem 2 as a whole can prevent self-tapping screw 1 from loosening, when cross disc mouth 303 is damaged and cannot be twisted out during use, positioning insertion rod 5 is removed, a long rod is inserted into first limiting insertion hole 302 to rotate, and the purpose of insertion can be achieved.

[0025] It is to be noted that, in the present text, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions, and the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0026] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A set screw, comprising a self-tapping screw (1), characterized in that, The self-tapping screw (1) comprises a bolt rod body (2) and a screw head (3), the lower surface of the screw head (3) is provided with an embedded groove (301), the lower surface of the embedded groove (301) is provided with a lock washer (4) outside the bolt rod body (2), the lower surface of the lock washer (4) is provided with a clamping nail (401), the side surface of the lock washer (4) is provided with a second limiting insertion hole (402) in array, and the side surface of the screw head (3) is provided with a first limiting insertion hole (302) in array.

2. The assembled locking self-tapping screw according to claim 1, wherein, The first limiting insertion hole (302) and the second limiting insertion hole (402) are provided with a positioning insertion rod (5), and the lower end of the bolt rod body (2) is provided with a tapping cone head (6).

3. The assembled locking self-tapping screw according to claim 1, wherein, The outer side of the bolt rod body (2) is provided with a self-tapping thread (201), and the upper surface of the screw head (3) is provided with a cross disc opening (303).

4. The pre-assembled self-locking screw according to claim 1, wherein, The outer diameter size length of the lock washer (4) is matched with the inner diameter size length of the embedded groove (301).

5. The pre-assembled check screw of claim 1, wherein, The clamping nail (401) is fixedly connected with the lock washer (4).

6. The pre-assembled check screw of claim 2, wherein, The tapping cone head (6) is fixedly connected with the bolt rod body (2).

7. The pre-assembled check screw of claim 2, wherein, The bolt rod body (2) is fixedly connected with the screw head (3).

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