CN215521579U - Bolt and nut combined fastener - Google Patents

Abstract

The utility model discloses a bolt and nut combined fastener, which comprises a bolt and a nut which are in threaded connection, wherein the nut comprises a nut body, the middle part of the nut body is provided with a screw hole, the screw hole comprises an upper section and a lower section, the aperture of the upper section is smaller than that of the lower section, the surface of the upper section of the screw hole is provided with threads, two opposite sides of the lower section of the screw hole are respectively provided with a slot, an inserting rod is inserted in the slot in a sliding manner, one end of the inserting rod, close to the screw hole, is provided with a limiting part for abutting against the bolt, the two limiting parts are matched with and clamped against the bolt, the inserting rod is provided with a jack, the nut body is provided with a limiting groove, the limiting groove faces the jack, a limiting rod is inserted in the limiting groove, and the limiting rod is also inserted into the jack. According to the utility model, the upper section and the lower section are arranged on the nut body, the upper section plays a main screw connection role, the lower section further enhances the limit of the bolt, ensures the connection stability of the bolt and the nut, and plays a role in preventing loosening.

Description

Bolt and nut combined fastener

Technical Field

The utility model relates to the technical field of mechanical parts, in particular to a bolt and nut combined fastener.

Background

Bolt-and-nut assembly fasteners can generally be used to join two or more components. Most of the existing fasteners are in a common bolt and nut connection and fastening mode, and when the fasteners are applied to a vibration occasion, the fasteners have the risks of loosening and falling off.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a bolt and nut combined fastener which is simple in structure and stable in connection, aiming at the defects in the prior art.

In order to achieve the purpose, the utility model discloses a bolt and nut combined fastener, which adopts the following technical scheme:

the utility model provides a bolt and nut combined fastener, includes the bolt and the nut of looks spiro union, the nut includes the nut body, nut body middle part is provided with the screw, the screw includes upper segment and hypomere, and the aperture of upper segment is less than the aperture of hypomere, the upper segment surface of screw is provided with the screw thread, the slot has transversely been seted up respectively to the relative both sides of hypomere of screw, sliding insert in the slot and being equipped with the inserted bar, the one end that the inserted bar is close to the screw is provided with the locating part that supports the bolt, two the locating part cooperation card supports the bolt, be provided with the jack on the inserted bar, set up on the nut body and have limited groove, the limited groove is facing to the jack, the spacing inslot interpolation is equipped with the gag lever post, the gag lever post also inserts the jack.

The bolt and nut combined fastener is further improved in that the limiting piece comprises an arc-shaped positioning plate, lines matched with threads on the bolt are arranged on the surface of the positioning plate, a positioning portion sleeved on the inserted rod is arranged on the other side of the positioning plate, a groove is formed in the inserted rod along the length direction of the inserted rod, and a convex block embedded into the groove is arranged on the positioning portion.

The bolt and nut combined fastener is further improved in that the insert rod comprises a first rod section and a second rod section, a spring is arranged between the first rod section and the second rod section, an insert hole is formed in the first rod section, and a limiting piece is connected to the second rod section.

The bolt and nut combined fastener is further improved in that an elastic pad is arranged on the upper end face of the nut body, friction protrusions are arranged on the surface of the elastic pad, a transverse baffle is arranged at the tail end of the limiting rod, and the baffle presses against the elastic pad.

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

according to the utility model, the upper section and the lower section are arranged on the nut body, the upper section plays a main screw connection role, the lower section further enhances the limit on the bolt, ensures the connection stability of the bolt and the nut, and plays a role in preventing loosening; meanwhile, the limiting structure also comprises a spring, so that certain shock absorption is realized, and the service life of the fastener is prolonged.

Drawings

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

in the figure: 1 bolt, 2 nut bodies, 3 upper sections of screw, 4 lower sections of screw, 5 slots, 6 first pole sections, 7 second pole sections, 8 gag lever posts, 9 locating plates, 10 location portions, 11 springs, 12 friction bulges, 13 baffles.

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.

As shown in fig. 1, a bolt and nut combined fastener comprises a bolt 1 and a nut which are in threaded connection, the nut comprises a nut body 2, a screw hole is arranged in the middle of the nut body 2 and comprises an upper section and a lower section, the aperture of the upper section is smaller than that of the lower section, threads are arranged on the surface of the upper section 3 of the screw hole, slots 5 are transversely and respectively formed in two opposite sides of the lower section 4 of the screw hole, inserting rods are arranged in the slots 5 in a sliding mode, one ends, close to the screw hole, of the inserting rods are provided with limiting parts which abut against the bolt 1, the limiting parts are matched with the bolt 1 in a clamping mode, inserting holes are formed in the inserting rods, a limiting groove is formed in the nut body, the limiting groove faces the inserting holes, a limiting rod is inserted in the limiting groove, and the limiting rod is also inserted into the inserting holes.

Specifically, the locating part includes curved locating plate 9, the locating plate surface be provided with the bolt on the line of screw thread looks adaptation, location 9 board opposite sides are provided with the location portion 10 of cup jointing in the inserted bar, be provided with recess (not shown in the figure) along inserted bar length direction on the inserted bar, be provided with the lug of embedding recess on the location portion 10. Prevent that the locating plate from appearing rotating to the tight production of support of bolt influences. The locating part can be dismantled with the inserted bar and be connected, and it is more convenient to connect the use.

Further, the inserted link includes first pole section 6 and second pole section 7, be provided with spring 11 between first pole section and the second pole section, the jack has been seted up on first pole section 6, second pole section 7 is connected in the locating part. Through the setting of spring, realize the shock attenuation of nut and bolted connection department, it is long when having prolonged the use.

Further, the nut body up end is provided with the cushion, the cushion surface is provided with friction arch 12, the gag lever post end is provided with horizontal baffle 13, set up on the cushion and supply gag lever post male breach, the gag lever post inserts the breach backplate and presses and supports the cushion. Fix the cushion through the baffle, the friction arch on the cushion makes conflict more firm between device that bolt and nut fastened and the bolt and nut.

The working principle of the utility model is as follows: the bolt is in fastening connection with the nut body in a matched mode, the bolt is in threaded connection with the upper section of the nut body, the limiting part arranged on the lower section of the nut body limits and tightly supports the bolt, and the bolt and the nut are connected stably in a whole mode.

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 (4)

1. The utility model provides a bolt and nut combined fastener which characterized in that: including the bolt and the nut of looks spiro union, the nut includes the nut body, nut body middle part is provided with the screw, the screw includes upper segment and hypomere, and the aperture of upper segment is less than the aperture of hypomere, the upper segment surface of screw is provided with the screw, the slot has transversely been seted up respectively to the relative both sides of hypomere of screw, sliding insert is equipped with the inserted bar in the slot, the one end that the inserted bar is close to the screw is provided with the locating part that supports the bolt, two locating part cooperation card supports the bolt, be provided with the jack on the inserted bar, set up on the nut body at the spacing groove, the spacing groove is facing to the jack, the spacing inslot interpolation is equipped with the gag lever post, the gag lever post also inserts the jack.

2. A bolt and nut combination fastener as defined in claim 1, wherein: the locating part includes curved locating plate, the locating plate surface be provided with the bolt on the line of screw thread looks adaptation, the locating plate opposite side is provided with the location portion of cup jointing in the inserted bar, be provided with the recess along inserted bar length direction on the inserted bar, be provided with the lug of embedding recess on the location portion.

3. A bolt and nut combination fastener as defined in claim 1, wherein: the inserted bar comprises a first bar section and a second bar section, a spring is arranged between the first bar section and the second bar section, an insertion hole is formed in the first bar section, and the second bar section is connected with a limiting part.

4. A bolt and nut combination fastener as defined in claim 1, wherein: the nut body up end is provided with the cushion, the cushion surface is provided with the friction arch, the gag lever post end is provided with horizontal baffle, the baffle is pressed and is supported the cushion.

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