CN216519078U - Self-drilling self-tapping anti-loosening retaining screw - Google Patents

Abstract

The application discloses self-drilling self-tapping locking solid screw that moves relates to screw technical field, improves present screw and takes place not hard up problem easily in the use. Including the screw rod, the top fixedly connected with of screw rod is twisted the head, the outside threaded connection of screw rod has the nut, the nut with be equipped with the spring between twisting the head, the first spacing inserted bar of one end fixedly connected with of spring, the nut is close to twist one side of head set up with the spacing groove of first spacing inserted bar looks adaptation, this application passes through the setting of spring, first spacing inserted bar and the spacing inserted bar of second for insert the inside back that spacing jack was inserted to spacing groove and the spacing inserted bar of second at first spacing inserted bar, can utilize the torsional action of spring, effectively reduce nut and screw rod pivoted probability, thereby effectively reduce the not hard up probability of whole screw, and then improve the stability fixed to the object.

Description

Self-drilling self-tapping anti-loosening retaining screw

Technical Field

The application relates to the technical field of screws, in particular to a self-drilling self-tapping anti-loosening retaining screw.

Background

The screw is a fastener commonly used in production and life, is commonly used for connecting and fixing two or more objects, and is an indispensable industrial necessity in daily life: extremely small screws used for cameras, glasses, clocks, electronics, and the like; general screws for televisions, electric appliances, musical instruments, furniture, and the like; large screws and screw heads are used for engineering, buildings and bridges; transportation equipment, airplanes, electric cars, automobiles, and the like are used with screws of different sizes. The screw has an important task in industry, and as long as there is industry on earth, the function of the screw is always important. The screw is a common invention in production and life of people for thousands of years, and is the first invention of human according to the application field.

The existing screw is easy to loosen due to spontaneous rotation caused by vibration in the use process, so that the connected and fixed object is separated.

SUMMERY OF THE UTILITY MODEL

In order to improve present screw and take place not hard up problem easily in the use, this application provides a self-drilling self tapping locking screw of moving.

The application provides a self-drilling self-tapping anti-loosening retaining screw, adopts following technical scheme:

the utility model provides a self-drilling self tapping locking screw that ends that moves, includes the screw rod, the top fixedly connected with of screw rod is twisted the head, the outside threaded connection of screw rod has the nut, the nut with be equipped with the spring between twisting the head, the first spacing inserted bar of one end fixedly connected with of spring, the nut is close to twist one side of head set up with the spacing groove of first spacing inserted bar looks adaptation, the spacing inserted bar of top fixedly connected with second of spring, the inside of twisting the head evenly set up with the spacing jack of the spacing inserted bar looks adaptation of second, the spacing jack runs through twisting the head from top to bottom.

Through adopting above-mentioned technical scheme, insert the inside back that spacing inslot portion and the spacing inserted bar of second inserted the spacing jack at first spacing inserted bar, can effectively carry on spacingly to the spring, utilize the torsion effect of spring simultaneously, can effectively reduce the nut and twist the head and take place spontaneous pivoted probability to effectively reduce whole screw and take place not hard up probability.

Optionally, a cross groove is formed in the middle of the top of the screwing head.

By adopting the technical scheme, when the screw is screwed out, the screwdriver can be inserted into the cross groove, so that the screwing head and the screw can be conveniently rotated.

Optionally, each group of limiting jacks are connected with ejector rods in a sliding manner.

Through adopting above-mentioned technical scheme, when needs are pulled down the screw rod from the inside of nut, can push the inside of ejector pin with the ejecting spacing jack of screw rod through downwards to relieve the spacing to twisting the head, thereby be convenient for to the dismantlement of nut and screw rod.

Optionally, a fixing block is arranged above the screwing head, and the fixing block is fixedly connected with each group of the ejector rods.

Through adopting above-mentioned technical scheme, the setting of fixed block can be convenient for promote the regulation to the ejector pin.

Optionally, the outer side of the screw head is in threaded connection with an internal thread ring, and a corrugated pipe is fixedly connected between the internal thread ring and the fixing block.

Through adopting above-mentioned technical scheme, the rotation of internal thread ring can pull fixed block and ejector pin motion through the bellows to when the nut installation, adjust each group's ejector pin to stopping up each group's spacing jack completely, and then reduce the inside that the spacing inserted bar of second inserted the spacing jack when the nut installation and lead to the unable pivoted probability of nut.

Optionally, a sleeve is sleeved outside the spring, and the sleeve is fixedly connected with the nut.

Through adopting above-mentioned technical scheme, the setting of sleeve pipe is arranged in inserting the corresponding hole site of waiting to install the object in the use to the realization is protected the spring, reduces the probability that the object rocked in the outside of spring simultaneously.

Optionally, the bottom wall of the screwing head is provided with an annular accommodating groove matched with the sleeve.

Through adopting above-mentioned technical scheme, the setting of annular holding tank is used for being convenient for hold the sleeve pipe when fixing thinner object.

Optionally, one end of the fixing block, which is far away from the nut, is fixedly connected with a pull ring.

Through adopting above-mentioned technical scheme, can adjust fixed block and ejector pin through push-and-pull ring when adjusting the fixed block.

To sum up, the beneficial effect of this application is as follows:

this application is through the setting of spring, the spacing inserted bar of first spacing inserted bar and second for after the spacing inserted bar of first spacing inserted bar inserts the inside that spacing jack was inserted to spacing groove and second, can utilize the torsion effect of spring, effectively reduce nut and screw rod pivoted probability, thereby effectively reduce the not hard up probability of whole screw, and then improve the stability fixed to the object.

Drawings

FIG. 1 is a cross-sectional view of the overall construction of the present application;

figure 2 is a top view of the screw head construction of the present application.

Description of reference numerals: 1. a screw; 2. screwing the head; 3. a nut; 4. a spring; 5. a limiting groove; 6. a first limit inserted link; 7. a second limit inserted link; 8. limiting the jacks; 9. a cross groove; 10. a fixed block; 11. a bellows; 12. an internally threaded ring; 13. a top rod; 14. a sleeve; 15. an annular accommodating groove; 16. and (4) a pull ring.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

Referring to fig. 1-2, a self-drilling and self-tapping anti-loosening screw comprises a screw rod 1, wherein the screw rod 1 can be set to be a pointed end to realize self-drilling and self-tapping. The top fixedly connected with of screw rod 1 is twisted first 2, and the setting of twisting first 2 is used for treating one side of fixed object and carries on spacingly. The outer side of the screw rod 1 is in threaded connection with a nut 3, and the nut 3 is arranged to limit the other side of the object to be fixed. The middle position of the top of the twisting head 2 is provided with a cross groove 9, and the cross groove 9 is convenient for rotating and adjusting the twisting head 2.

Referring to fig. 1-2, a spring 4 is disposed between the nut 3 and the screw head 2, a first limiting insertion rod 6 is fixedly connected to one end of the spring 4, a limiting groove 5 adapted to the first limiting insertion rod 6 is disposed on one side of the nut 3 close to the screw head 2, and the limiting groove 5 is used for limiting one end of the spring 4 after the screw rod 1 is inserted into the limiting groove. Spring 4's the spacing inserted bar 7 of top fixedly connected with second, twist the inside of head 2 and evenly set up the spacing jack 8 with the spacing inserted bar 7 looks adaptation of second, spacing jack 8 runs through from top to bottom and twists head 2, the spacing inserted bar 7 of second is used for spacing the other end of spring 4 after inserting the inside of spacing jack 8 to utilize spring 4's torsion effect restriction nut 3 and twist head 2 pivoted probability, and then effectively reduce the not hard up probability of whole screw.

Referring to fig. 1, a sleeve 14 is sleeved outside a spring 4, the sleeve 14 is fixedly connected with a nut 3, and the sleeve 14 is arranged to be inserted into an installation hole of an object to be fixed, so that the object to be fixed is limited, the spring 4 is protected, and the probability of shaking of the object to be fixed is reduced. The annular accommodating groove 15 matched with the sleeve 14 is formed in the bottom wall of the screwing head 2, and the annular accommodating groove 15 is used for accommodating the sleeve 14.

Referring to fig. 1, the inside of each group of limiting insertion holes 8 is slidably connected with an ejector rod 13, and the ejector rod 13 is arranged to eject the second limiting insertion rod 7 out of the limiting insertion holes 8 when being pressed down, so that the limiting of the screw head 2 is released when the screw 1 is disassembled, and the screw head 2 and the screw 1 can be screwed normally. A fixing block 10 is arranged above the screwing head 2, the fixing block 10 is fixedly connected with each group of ejector rods 13, and the fixing block 10 is convenient for synchronously adjusting and pressing each group of ejector rods 13. One end fixedly connected with pull ring 16 that nut 3 was kept away from to fixed block 10, the setting of pull ring 16 is used for carrying out the pulling regulation to fixed block 10.

Referring to fig. 1-2, an internal thread ring 12 is connected to the outer side of the screw head 2 through a thread, a corrugated pipe 11 is fixedly connected between the internal thread ring 12 and the fixed block 10, and the internal thread ring 12 is arranged to pull the fixed block 10 and the ejector rods 13 to move through the corrugated pipe 11 during rotation, so that when the nut 3 is installed, each group of the ejector rods 13 is adjusted to completely block each group of the limiting insertion holes 8, and the probability that the nut 3 cannot rotate due to the fact that the second limiting insertion rod 7 is inserted into the limiting insertion holes 8 during installation of the nut 3 is reduced.

The implementation principle of the application is as follows:

when using, insert the inside of spacing groove 5 with first spacing inserted bar 6, then insert the installation hole site of waiting to connect the object with sleeve pipe 14, then rotate internal thread ring 12 for bellows 11 tensioning, and drive fixed block 10 and move to and screw head 2 contact, drive ejector pin 13 simultaneously and move to its diapire and the diapire coplanar of twisting head 2, can insert the inside of screw rod 1 nut 3 after that, then twist nut 3, make nut 3 advance along the outside spiral shell of screw rod 1, bellows 11 is compressed when nut 3 spiral shell advances. After the fastening installation of screw is accomplished, reverse the internal thread ring 12 of twisting for internal thread ring 12 upward movement, ejector pin 13 and fixed block 10 rise, inside the spacing inserted bar 7 of second inserted the spacing jack 8 that corresponds, because spring 4 torsion effect, thereby effectively reduce screw rod 1 and nut 3 pivoted probability, and then reduce the not hard up probability of whole bolt.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a self-drilling self tapping locking screw of moving, includes screw rod (1), its characterized in that: the top fixedly connected with of screw rod (1) twists first (2), the outside threaded connection of screw rod (1) has nut (3), nut (3) with be equipped with spring (4) between twisting first (2), the first spacing inserted bar of one end fixedly connected with (6) of spring (4), nut (3) are close to twist one side of first (2) seted up with spacing groove (5) of first spacing inserted bar (6) looks adaptation, the spacing inserted bar of top fixedly connected with second (7) of spring (4), twist the inside of first (2) evenly seted up with spacing jack (8) of the spacing inserted bar of second (7) looks adaptation, spacing jack (8) run through from top to bottom and twist first (2).

2. A self-drilling, self-tapping, anti-loosening, set screw as defined in claim 1, wherein: the middle position of the top of the screwing head (2) is provided with a cross groove (9).

3. A self-drilling, self-tapping, anti-loosening, set screw as defined in claim 1, wherein: and the inner parts of the limiting jacks (8) of all groups are connected with ejector rods (13) in a sliding manner.

4. A self-drilling, self-tapping, anti-loosening and retaining screw as defined in claim 3, wherein: a fixing block (10) is arranged above the screwing head (2), and the fixing block (10) is fixedly connected with the ejector rods (13).

5. The self-drilling, self-tapping, anti-loosening and retaining screw of claim 4, wherein: the outer side of the screwing head (2) is in threaded connection with an internal thread ring (12), and a corrugated pipe (11) is fixedly connected between the internal thread ring (12) and the fixing block (10).

6. A self-drilling, self-tapping, anti-loosening, set screw as defined in claim 1, wherein: the outer side of the spring (4) is sleeved with a sleeve (14), and the sleeve (14) is fixedly connected with the nut (3).

7. A self-drilling, self-tapping, anti-loosening and retaining screw as defined in claim 6, wherein: the bottom wall of the screwing head (2) is provided with an annular accommodating groove (15) matched with the sleeve (14).

8. The self-drilling, self-tapping, anti-loosening and retaining screw of claim 4, wherein: and one end of the fixing block (10) far away from the nut (3) is fixedly connected with a pull ring (16).

Images