CN214742653U - Anti-loosening screw - Google Patents

Abstract

The utility model discloses a locking screw, which comprises a fixed block, a threaded rod, a connecting sheet, a threaded hole and a circular groove, wherein the top of the fixed block is provided with the threaded hole and the circular groove, the circular groove is communicated with the threaded hole, the threaded rod is in threaded connection inside the threaded hole, the connecting sheet is fixedly connected at the top end of the threaded rod, a reinforcing mechanism capable of reinforcing the screw fixation is arranged at the top of the connecting sheet, when the screw is fixed in the threaded hole by the reinforcing mechanism on the screw, the end part of a sliding rod is clamped into a limiting groove in the circular groove, so that the screw is firmer when being fixed, so as to prevent the screw from loosening, when the screw is fixed by the auxiliary mechanism, the threaded rod on the screwed screw can be mutually matched with the bottom of the threaded hole, the upper ring and the lower ring are extruded, the folding strip is outwards bent and deformed, so that the folding strip can be bent and embedded into the clamping groove, the screw is more firmly fixed, and the looseness of the screw caused by vibration, impact, corrosion and the like is reduced.

Description

Anti-loosening screw

Technical Field

The utility model relates to a screw technical field specifically is an anti-loosening screw.

Background

Screws are a common fastener and are widely used in machinery, electrical appliances and buildings. Generally, the material is metal or plastic, and is cylindrical, and the grooves with the concave and convex surfaces are called as screw threads. The screws are various in types, generally distinguished according to the shapes of the screws, and can be divided into slotted common screws, inner hexagonal and inner hexagonal flower-shaped screws, cross-slot common screws, lifting ring screws, set screws, self-tapping screws and the like, the surfaces of the common screws are immersed into an aqueous solution containing deposited metal compounds during production, and electroplating metal is separated out and deposited on parts by passing current through a plating solution, so that the produced screws are attractive in surface and have a certain anti-corrosion effect.

When the screw is fixed, the screw is loosened due to insufficient screwing, the screw is also loosened in a vibration environment for a long time, and the screw is loosened due to large-angle mechanical impact caused by dynamic or alternating load from machines, generators, wind turbines, automobiles and other equipment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a locking not hard up, fixed firm screw to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an anti-loosening screw, includes fixed block, threaded rod, connection piece, screw hole and circular recess, threaded hole and circular recess are seted up at the fixed block top, and the circular recess is linked together with the screw hole, the inside threaded connection of screw hole has the threaded rod, threaded rod top fixedly connected with connection piece, the reinforcement mechanism that can strengthen the fix with screw is installed at connection piece top, the complementary unit that can carry out spacing, joint to the screw is installed to the threaded rod bottom.

Preferably, the reinforcing mechanism includes spacing groove, annular piece, arc hole, slide cartridge, slide bar and spacing spring, the spacing groove has been seted up at the fixed block top, and the spacing groove is linked together with the circular recess, the connection piece top is equipped with the annular piece, the arc hole has been seted up to connection piece top equidistance isogonism, the arc hole is inside to all slide to peg graft and to have the arc piece, arc piece top all with annular piece fixed connection, threaded rod top outside equidistance isogonism fixedly connected with slide cartridge, the inside slide cartridge that all slides and pegs graft and has the slide bar of slide cartridge, the inside spacing spring that all is equipped with of slide cartridge, the slide bar all through spacing spring and the slide cartridge elastic connection who corresponds.

Preferably, complementary unit includes the joint groove, fits with a contraceptive ring, rolls over strip and lower ring, the joint groove has been seted up to fixed block inside, and the joint groove is linked together with the screw hole, threaded rod bottom end fixedly connected with fits with a contraceptive ring, the angle fixedly connected with such as the equidistance of fitting with a contraceptive ring bottom rolls over the strip, be equipped with the lower ring under fitting with, roll over the strip bottom all with lower ring fixed connection.

Preferably, the center of the top of the connecting piece is provided with a cross groove.

Preferably, the bottom of the annular sheet is fixedly connected with a connecting spring at equal intervals and equal angles, and the annular sheet is elastically connected with the connecting sheet through the connecting spring.

Preferably, the outer side of the connecting piece is provided with strip-shaped grooves at equal intervals and equal angles.

Preferably, the limiting groove is in a triangular shape protruding outwards from the threaded hole.

Preferably, one end of each sliding rod is arc-shaped.

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

1. the utility model discloses a reinforcing mechanism on the screw can let the fix with screw when the threaded hole, and the tip card of slide bar is gone into the spacing inslot of circular recess, and it is more firm when fixed to let the screw to prevent that the screw from becoming flexible.

2. The utility model discloses an auxiliary mechanism lets the screw when fixed, and the threaded rod on the screw that twists moves can mutually support bottom the screw hole, extrudees to fit with a contraceptive ring and lower ring, lets roll over the strip and outwards bend, takes place deformation to roll over the strip and can bend and imbed the joint inslot, it is more firm when letting the screw fix, reduce the screw because of vibration, strike, not hard up when corroding etc..

Drawings

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

FIG. 2 is a sectional view of the overall structure of the present invention;

FIG. 3 is a sectional view of the fixing block structure of the present invention;

fig. 4 is one of the schematic structural views of the threaded rod of the present invention;

fig. 5 is a second schematic view of the threaded rod of the present invention;

FIG. 6 is a schematic view of the ring-shaped sheet structure of the present invention;

fig. 7 is a third schematic view of the threaded rod of the present invention;

fig. 8 is a schematic view of the slide cylinder and the slide rod of the present invention.

In the figure: 1. a fixed block; 2. a threaded rod; 3. connecting sheets; 4. a threaded hole; 5. a reinforcement mechanism; 6. an auxiliary mechanism; 7. a circular groove; 8. a cross groove; 51. a limiting groove; 52. an annular sheet; 53. an arc-shaped sheet; 54. a connecting spring; 55. an arc-shaped hole; 56. a slide cylinder; 57. a slide bar; 58. a limiting spring; 59. a strip-shaped groove; 61. a clamping groove; 62. ring fitting; 63. folding the strips; 64. and (4) a lower ring.

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 embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and 2, the anti-loosening screw shown in the figure comprises a fixing block 1, a threaded rod 2, a connecting piece 3, a threaded hole 4 and a circular groove 7, wherein the threaded hole 4 and the circular groove 7 are formed in the top of the fixing block 1, the circular groove 7 is communicated with the threaded hole 4, the threaded rod 2 is connected with the threaded hole 4 in a threaded manner, the connecting piece 3 is fixedly connected to the top end of the threaded rod 2, a reinforcing mechanism 5 capable of reinforcing the screw fixation is installed at the top of the connecting piece 3, and an auxiliary mechanism 6 capable of limiting and clamping the screw is installed at the bottom end of the threaded rod 2.

When can let the fix with screw in screw hole 4 through reinforcing mechanism 5 on the screw, the tip card of slide bar 57 is gone into in the spacing groove 51 in circular recess 7, it is more firm when fixed to let the screw, so that prevent the screw not hard up, and let the screw when fixed through complementary unit 6, threaded rod 2 on the screw of twisting can mutually support with screw hole 4 bottom, extrude upper ring 62 and lower ring 64, let the bending 63 outwards, take place deformation, so that the bending 63 can be bent and imbed in joint groove 61, it is more firm when letting the screw fix, reduce the screw because of the vibration, strike, not hard up when corroding the equal.

Referring to fig. 4, 5, 6, 7 and 8, the reinforcing mechanism 5 includes a limiting groove 51, an annular plate 52, an arc-shaped plate 53, an arc-shaped hole 55, a sliding cylinder 56, a sliding rod 57 and a limiting spring 58, the limiting groove 51 is formed at the top of the fixing block 1, the limiting groove 51 is communicated with the circular groove 7, the annular plate 52 is arranged above the connecting plate 3, the arc-shaped holes 55 are formed at the top of the connecting plate 3 at equal intervals and equal angles, the arc-shaped plate 53 is slidably inserted into the arc-shaped holes 55, the top of the arc-shaped plate 53 is fixedly connected with the annular plate 52, the sliding cylinder 56 is fixedly connected at equal intervals and equal angles at the outer side of the top end of the threaded rod 2, the sliding cylinder 56 is slidably inserted into the sliding rod 57, the limiting spring 58 is arranged inside the sliding cylinder 56, and the sliding rods 57 are elastically connected with the corresponding sliding cylinders 56 through the limiting spring 58.

When the screw is screwed, when the arc-shaped sheet 53 in the arc-shaped hole 55 of the connecting sheet 3 at the end part contacts the fixed block 1, the continuously screwed screw can enable the fixed block 1 to extrude the arc-shaped sheet 53 to slide upwards, the connecting spring 54 is stretched, the end part of the sliding rod 57 in the sliding cylinder 56 can slide to the circular groove 7 from the arc-shaped sheet 53, when the sliding rod 57 slides into the limiting groove 51, the limiting spring 58 in a tightening state can push the sliding rod 57 to slide in the sliding cylinder 56, and the end part of the sliding rod 57 is inserted into the limiting groove 51, so that the fixation of the screw is enhanced, and the screw is prevented from loosening.

Referring to fig. 6 and 7, the auxiliary mechanism 6 includes a clamping groove 61, an upper ring 62, a folding strip 63 and a lower ring 64, the clamping groove 61 is formed inside the fixing block 1, the clamping groove 61 is communicated with the threaded hole 4, the upper ring 62 is fixedly connected to the bottom end of the threaded rod 2, the folding strips 63 are fixedly connected to the bottom of the upper ring 62 at equal intervals and at equal angles, the lower ring 64 is arranged under the upper ring 62, and the bottom ends of the folding strips 63 are fixedly connected to the lower ring 64.

When the lower ring 64 at the bottom end of the screw which is continuously screwed contacts the bottom of the threaded hole 4, the screw is continuously screwed to extrude the folding strip 63 between the upper ring 62 and the lower ring 64, and the slender folding strip 63 which protrudes outwards bends outwards under the action of pressure and is embedded into the clamping groove 61 at the bottom of the threaded hole 4 to strengthen and fix the screw.

Referring to fig. 1 and 6, a cross-shaped groove 8 is formed in the center of the top of the connecting piece 3, so that the screw can be screwed more conveniently.

Referring to fig. 4 and 5, the bottom of the ring-shaped piece 52 is fixedly connected with a connecting spring 54 at equal intervals and equal angles, the ring-shaped piece 52 is elastically connected with the connecting piece 3 through the connecting spring 54, and the ring-shaped piece 52 is always attached to the end of the sliding rod 57 under the action of elastic force.

Referring to fig. 5 and 6, the outer side of the connecting piece 3 is provided with strip-shaped grooves 59 at equal intervals and equal angles, so that the screwing of the screw is more convenient.

Referring to fig. 3, the limiting groove 51 is in a triangular shape protruding outward from the threaded hole 4, and the triangular limiting groove 51 allows the folded strip 63 to be more firmly inserted.

Referring to fig. 8, one end of the sliding rod 57 is arc-shaped, so as to reduce the friction between the sliding rod 57 and the arc-shaped piece 53.

The working principle is as follows: when the screw is screwed, when the arc-shaped sheet 53 in the arc-shaped hole 55 of the connecting sheet 3 at the end part contacts the fixed block 1, the continuously screwed screw can enable the fixed block 1 to extrude the arc-shaped sheet 53 to slide upwards, the connecting spring 54 is stretched, the end part of the sliding rod 57 in the sliding cylinder 56 can slide into the circular groove 7 from the arc-shaped sheet 53, when the sliding rod 57 slides into the limiting groove 51, the limiting spring 58 in a tightening state can push the sliding rod 57 to slide in the sliding cylinder 56, the end part of the sliding rod 57 is inserted into the limiting groove 51 so as to enhance the fixation of the screw, the screw is prevented from loosening, when the lower ring 64 at the bottom end contacts the bottom of the threaded hole 4, the continuously screwed screw can extrude the folding strip 63 between the upper ring 62 and the lower ring 64, and the outward-protruded slender folding strip 63 can be bent outwards under the pressure effect and is embedded into the clamping groove 61 at the bottom of the threaded hole 4, so as to enhance the fixation of the screw.

It is noted that, herein, relational terms such as first and second, and the like may 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. Also, 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 (8)

1. The utility model provides an anti-loosening screw, includes fixed block (1), threaded rod (2), connection piece (3), screw hole (4) and circular recess (7), threaded hole (4) and circular recess (7) are seted up at fixed block (1) top, and circular recess (7) are linked together with screw hole (4), threaded hole (4) internal thread is connected with threaded rod (2), threaded rod (2) top fixedly connected with connection piece (3), its characterized in that: the reinforcing mechanism (5) capable of reinforcing the screw fixation is installed at the top of the connecting piece (3), and the auxiliary mechanism (6) capable of limiting and clamping the screw is installed at the bottom end of the threaded rod (2).

2. A locking screw as claimed in claim 1, wherein: the reinforcing mechanism (5) comprises a limiting groove (51), an annular sheet (52), an arc sheet (53), an arc hole (55), a sliding cylinder (56), a sliding rod (57) and a limiting spring (58), the limiting groove (51) is formed in the top of the fixing block (1), the limiting groove (51) is communicated with the circular groove (7), an annular sheet (52) is arranged above the connecting sheet (3), arc-shaped holes (55) are arranged at the top of the connecting sheet (3) at equal intervals and equal angles, arc-shaped sheets (53) are inserted in the arc-shaped holes (55) in a sliding manner, the tops of the arc-shaped sheets (53) are fixedly connected with the annular sheet (52), the outer side of the top end of the threaded rod (2) is fixedly connected with a sliding cylinder (56) at equal intervals and equal angles, sliding rods (57) are inserted in the sliding cylinders (56) in a sliding manner, limiting springs (58) are arranged in the sliding cylinders (56), the sliding rods (57) are elastically connected with the corresponding sliding cylinders (56) through limiting springs (58).

3. A locking screw as claimed in claim 1, wherein: complementary unit (6) include joint groove (61), go up ring (62), folding strip (63) and lower ring (64), joint groove (61) have been seted up to fixed block (1) inside, and joint groove (61) are linked together with screw hole (4), threaded rod (2) bottom fixedly connected with fits with a contraceptive ring (62), angle fixedly connected with folding strip (63) such as angle such as fit with a contraceptive ring (62) bottom equidistance, be equipped with under fitting with a contraceptive ring (62) ring (64), folding strip (63) bottom all with lower ring (64) fixed connection.

4. A locking screw as claimed in claim 1, wherein: the center of the top of the connecting piece (3) is provided with a cross groove (8).

5. A locking screw as claimed in claim 2, wherein: the bottom of the annular sheet (52) is fixedly connected with a connecting spring (54) at equal intervals and equal angles, and the annular sheet (52) is elastically connected with the connecting sheet (3) through the connecting spring (54).

6. A locking screw as claimed in claim 1, wherein: strip-shaped grooves (59) are formed in the outer side of the connecting piece (3) at equal intervals and equal angles.

7. A locking screw as claimed in claim 2, wherein: the limiting groove (51) is in a triangular shape protruding outwards from the threaded hole (4).

8. A locking screw as claimed in claim 2, wherein: one end of each sliding rod (57) is arc-shaped.

Images