CN210423377U

CN210423377U - Anti-rollback screw with double guarantee

Info

Publication number: CN210423377U
Application number: CN201921281082.6U
Authority: CN
Inventors: 徐建禹
Original assignee: Zhejiang Tiangong Fastener Co ltd
Current assignee: Zhejiang Tiangong Fastener Co.,Ltd.
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-04-28
Anticipated expiration: 2029-08-08

Abstract

The utility model discloses a prevent screw that rolls back with dual guarantee, including the screw cap, the lower extreme fixedly connected with screw rod of screw cap, the internally mounted of mounting groove has clamping spring's one end, clamping spring's the one end of other end fixedly connected with connecting block, the one end of the other end fixedly connected with clamping block of connecting block, the external fixed surface of screw rod is connected with the ratchet. This prevent back screw with dual guarantee, the hexagon design is adopted in the outside of the screw cap on the screw, and the inside hole of screwing of screw cap and the groove of screwing, make the screw not only can screw through spanner and interior hexagonal, can also screw through cross screwdriver and a word screw, the practicality of screw has been improved, the ratchet's in the screw rod outside addition simultaneously, accessible ratchet's shrink blocks screw and screw hole, prevent that the screw from withdrawing from, and the accessible fixture block fastens the upper end of the screw of screw in, the effect of preventing back of further reinforcing screw.

Description

Anti-rollback screw with double guarantee

Technical Field

The utility model relates to a screw processing technology field specifically is a prevent screw that rolls back with dual guarantee.

Background

With the development of society, hardware becomes a product which is visible everywhere in our lives. The screw is one of common products in hardware, and is a tool for fastening machine parts of an object step by utilizing the physics and mathematical principles of the inclined plane circular rotation and friction of the object.

However, the existing screw anti-back technology mainly adopts self-tapping screws, expansion screws, glue or paint, etc., the anti-back effect is extremely poor, the use and manufacturing cost are high, the production cost is increased, and further the wide popularization is not facilitated, and the screw screwing tool is single, and the practicability of the screw is reduced.

Disclosure of Invention

An object of the utility model is to provide a prevent returning screw with dual guarantee to propose current screw in solving above-mentioned background art and prevent moving back the technique and mainly adopt self-tapping screw, inflation screw, glue or paint etc. it prevents moving back the effect extremely poor, and use simultaneously and manufacturing cost are higher, have increased manufacturing cost, and then are unfavorable for extensively promoting, and the instrument that the screw was screwed and is adopted is comparatively single, has reduced the problem of the practicality of screw.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a prevent screw that rolls back with dual guarantee, includes the screw cap, the lower extreme fixedly connected with screw rod of screw cap, the mounting groove has been seted up to the below that the upper end of screw rod is located the screw cap, the one end of mounting groove is connected with the rebound hole, the internally mounted of mounting groove has clamping spring's one end, clamping spring's the one end of other end fixedly connected with connecting block, the one end of the tight piece of other end fixedly connected with clamp of connecting block, the other end of the tight piece of clamp extends to the outside in rebound hole, the outer fixed surface of screw rod is connected with the ratchet.

Preferably, a screwing hole is formed in the screw cap, the screwing hole and the outer side of the screw cap are both of a hexagonal structure, a screwing groove is connected to the lower end of the screwing hole, and the screwing groove is integrally designed to be of a cross-shaped structure.

Preferably, a gap is reserved between the mounting groove and the clamping spring, the diameter of the mounting groove is larger than that of the connecting block, the diameter of the connecting block is larger than the length of a diagonal line of the rebounding hole, the rebounding hole is matched with one side of the clamping block, and the clamping block and the clamping spring are symmetrically provided with two groups about a vertical central line of the screw rod.

Preferably, one side of the other end of the clamping block is in an arc design, the other side of the other end of the clamping block is in a square design, and the connecting surface of the clamping block is flush with the outer surface of the screw rod.

Preferably, the ratchet is designed in a spiral mode, and the cross section of the ratchet is in an isosceles trapezoid shape.

Preferably, the lower end of the screw rod is designed in an inverted wheel-platform type, and the center of the screw rod is overlapped with the center of the screw cap.

Compared with the prior art, the beneficial effects of the utility model are that: this prevent returning back screw with dual guarantee, the hexagon design is adopted in the outside of the screw cap on the screw, and the inside hole of screwing and the groove of screwing of screw cap, make the screw not only can screw through spanner and interior hexagonal, can also screw through cross screwdriver and a word screw, the practicality of screw has been improved, the ratchet's in the screw pole outside addition simultaneously, accessible ratchet's shrink blocks screw and screw hole, prevent that the screw from withdrawing from, and the clamp spring through two sets of symmetries uses with the cooperation of pressing from both sides tight piece, the upper end fastening of the screw of screw in is realized to the accessible fixture block, further reinforcing screw prevents returning back the effect, the design of whole screw, the dual of screw of preventing returning back has been realized, make the mounting screw more stable, simultaneously, multiple instrument of accessible is installed, the practicality of screw has been improved.

Drawings

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

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

FIG. 3 is a schematic top view of the present invention;

FIG. 4 is an enlarged schematic view of the structure at the position A of the present invention;

fig. 5 is the schematic view of the connection structure of the connection block and the clamping block of the present invention.

In the figure: 1. a screw cap; 2. a screw shaft; 3. mounting grooves; 4. a rebound hole; 5. a clamping spring; 6. connecting blocks; 7. a clamping block; 8. a ratchet; 11. screwing the hole tightly; 12. and screwing the groove.

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 embodiment in the utility model, all other embodiments that ordinary technical staff in this field obtained under the prerequisite of not making creative work all belong to the scope of protection of the utility model.

Referring to fig. 1-5, the present invention provides a technical solution: an anti-rollback screw with double guarantee comprises a screw cap 1, wherein the lower end of the screw cap 1 is fixedly connected with a screw rod 2, the upper end of the screw rod 2 is positioned below the screw cap 1 and is provided with a mounting groove 3, one end of the mounting groove 3 is connected with a rebound hole 4, one end of a clamping spring 5 is mounted inside the mounting groove 3, the other end of the clamping spring 5 is fixedly connected with one end of a connecting block 6, the other end of the connecting block 6 is fixedly connected with one end of a clamping block 7, the other end of the clamping block 7 extends to the outer side of the rebound hole 4, and the outer surface of the screw rod 2 is fixedly connected with a ratchet 8;

furthermore, a screwing hole 11 is formed in the screw cap 1, the screwing hole 11 and the outer side of the screw cap 1 are both in a hexagonal structure, the lower end of the screwing hole 11 is connected with a screwing groove 12, the screwing groove 12 is integrally designed in a cross-shaped structure, and the screw can be installed through various tools, so that the practicability of the screw is improved;

furthermore, a gap is reserved between the mounting groove 3 and the clamping spring 5, the diameter of the mounting groove 3 is larger than that of the connecting block 6, the diameter of the connecting block 6 is larger than the length of the diagonal line of the rebound hole 4, the rebound hole 4 is matched with one side of the clamping block 7, and the clamping block 7 and the clamping spring 5 are symmetrically arranged in two groups about the vertical central line of the screw rod 2, so that the clamping block 7 can move freely, and the anti-rollback effect of the screw is further realized;

furthermore, one side of the other end of the clamping block 7 is in an arc-shaped design, the other side of the other end of the clamping block 7 is in a square design, and the connecting surface of the clamping block 7 is flush with the outer surface of the screw rod 2, so that the clamping block 7 is not blocked when the screw is screwed in, and a return and retreat effect is achieved;

furthermore, the ratchet 8 is designed in a spiral mode, and the section of the ratchet 8 is in an isosceles trapezoid shape, so that double backward movement of the screw is realized;

furthermore, the lower end of the screw rod 2 adopts an inverted wheel-platform-shaped design, and the center of the screw rod 2 is overlapped with the center of the screw cap 1, so that the screw can be conveniently and stably screwed into the threaded hole.

The working principle is as follows: firstly, aligning the lower end of a screw rod 2 with a threaded hole, when a screw is screwed by a wrench, the wrench is clamped with the outer side of the screw cap 1, the wrench is rotated to drive the screw cap 1, a ratchet 8 is retracted and screwed into the threaded hole, when the screw is screwed to a clamping block 7, the clamping block 7 moves towards a rebound hole 4, a clamping spring 5 is retracted, when the clamping block 7 is screwed to a mounting hole in the threaded hole, the clamping block 7 is moved out of the rebound hole 4 and clamped with the mounting hole under the action of the clamping spring 5, after the screw is screwed, the ratchet 8 is expanded and clamped with the threaded hole, through the double anti-retraction design of the clamping block 7 and the ratchet 8, the screw is stably mounted in the threaded hole, when the screw is screwed by an inner hexagon, the inner hexagon is placed in the hole 11, the inner hexagon drives the screw cap 1 to rotate, the ratchet 8 is retracted and screwed into the threaded hole, and when the screw is screwed to the clamping block 7, the clamping, when the clamping spring 5 contracts, the clamping block 7 is screwed to the mounting hole in the threaded hole, the clamping block 7 is moved out of the rebound hole 4 and clamped with the mounting hole under the action of the clamping spring 5, after the screw is screwed, the ratchet 8 expands to clamp the screw with the threaded hole, the screw is stably mounted in the threaded hole through the double anti-rollback design of the clamping block 7 and the ratchet 8, when the screw is screwed by using a cross screwdriver or a straight screwdriver, the cross screwdriver or the straight screwdriver is placed in the screwing groove 12, the cross screwdriver or the straight screwdriver drives the screw cap 1 to rotate, the ratchet 8 is retracted into the threaded hole, when the screw is screwed to the clamping block 7, the clamping block 7 moves towards the rebound hole 4, the clamping spring 5 contracts, when the clamping block 7 is screwed to the mounting hole in the threaded hole, the clamping block 7 is moved out of the rebound hole 4 and clamped with the mounting hole under the action of the clamping spring 5, after the screw is screwed, the ratchet 8 expands to clamp the screw and the threaded hole, and the screw is stably arranged in the threaded hole through the double anti-rollback design of the clamping block 7 and the ratchet 8.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an anti-backspacing screw with dual guarantee, includes the screw cap, its characterized in that: the lower extreme fixedly connected with screw rod of screw cap, the mounting groove has been seted up to the upper end of screw rod below that is located the screw cap, the one end of mounting groove is connected with the rebound hole, the internally mounted of mounting groove has clamping spring's one end, clamping spring's the one end of other end fixedly connected with connecting block, the one end of the tight piece of other end fixedly connected with clamp of connecting block, the other end of the tight piece of clamp extends to the outside in rebound hole, the external fixed surface of screw rod is connected with the ratchet.

2. The anti-rollback screw with double security according to claim 1, wherein: the interior of the screw cap is provided with a screwing hole, the screwing hole and the outer side of the screw cap are both in a hexagonal structure, the lower end of the screwing hole is connected with a screwing groove, and the screwing groove is integrally designed in a cross-shaped structure.

3. The anti-rollback screw with double security according to claim 1, wherein: leave the clearance between mounting groove and the clamping spring, and the diameter of mounting groove is greater than the diameter of connecting block, the diameter of connecting block is greater than the length of resilience hole diagonal, and resilience hole and the mutual adaptation of one side of pressing from both sides tight piece to it is provided with two sets ofly with clamping spring about the vertical central line symmetry of screw rod to press from both sides tight piece.

4. The anti-rollback screw with double security according to claim 1, wherein: one side of the other end of the clamping block is in an arc-shaped design, the other side of the other end of the clamping block is in a square design, and the connecting surface of the clamping block is flush with the outer surface of the screw rod.

5. The anti-rollback screw with double security according to claim 1, wherein: the ratchet adopts spiral design, and the cross-section of ratchet is isosceles trapezoid.

6. The anti-rollback screw with double security according to claim 1, wherein: the lower end of the screw rod adopts an inverted wheel platform type design, and the center of the screw rod is overlapped with the center of the screw cap.