CN214465500U - Bolt with anti-drop ability - Google Patents

Abstract

The utility model discloses a bolt with anti-drop ability, which comprises a bolt bottom, wherein the inside of the bolt bottom is provided with a holding tank, the inside of the bolt bottom is rotatably provided with a rotating shaft, one side of the rotating shaft is provided with a groove below, a convex rod is inserted into the groove, a spring is connected between the convex rod and the groove, one side of the bolt bottom is provided with an opening, the convex rod is opened, before a threaded rod passes through a first connecting plate and a second connecting plate, the spring can be compressed into the groove by pushing the convex rod, the rotating shaft is rotated, the rotating shaft can drive the convex rod to reach other positions inside the holding tank so as to avoid the inconvenient insertion of the bolt bottom into a hole to be installed, and after the threaded rod passes through the first connecting plate and the second connecting plate, the rotating shaft can drive the convex rod to reach the position of the opening by rotating shaft, and then the protruding rod can pass through the opening again, and the protruding rod can prevent the threaded rod from falling off at the moment.

Description

Bolt with anti-drop ability

Technical Field

The utility model relates to a bolt technical field specifically is a bolt with anti-drop ability.

Background

The bolt is a fastener consisting of a head part and a screw rod and is used for fastening and connecting two parts with through holes, and the connection form is called bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so that the bolt connection belongs to detachable connection. When the existing bolt is connected, the bolt can be loosened and further fall off due to the shaking phenomenon possibly caused by the mechanical work of the two connecting pieces;

for this reason, a bolt with a falling-off prevention capability is proposed in the patent application No. 201921913643.X, which prevents falling off by providing a protrusion with a spring at the bottom of the bolt;

it still has the following problems: when the nut is installed after the two thin connecting pieces are connected, the protrusion needs to be pressed into the groove, and the operation is troublesome.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bolt with anti-drop ability to after connecting two thinner connecting pieces, when installing the nut again, still need press the inside of recess, troublesome poeration's problem with the arch among the solution prior art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a bolt with anti-drop ability, includes the pole bottom, the holding tank has been seted up to the inside at the pole bottom, the rotation axis is installed in the inside rotation at the pole bottom, one side below of rotation axis is seted up flutedly, the inside of recess has inserted the protrusion pole, be connected with the spring between protrusion pole and the recess, open one side at the pole bottom and be equipped with the opening, protrusion pole opening.

Preferably, one end of the protruding rod penetrating through the rod bottom is provided with a rotatable ball.

Preferably, the rotary shaft further comprises a threaded rod, the upper end of the rotary shaft extends to the inside of the threaded rod, and a flange is arranged on the outer portion of the circumference of the threaded rod at a position close to the upper end.

Preferably, a knob is fixed to a lower end of the rotating shaft.

Preferably, a bolt head is fixedly connected to the upper end of the threaded rod, and a gasket is arranged on the lower surface of the bolt head.

Preferably, the threaded rod connects the first connecting plate and the second connecting plate.

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

1. the utility model discloses set up the rotation axis, before the threaded rod passes first connecting plate and second connecting plate, can make the spring be compressed to the inside of recess through promoting the protrusion pole, the rotation axis is rotated, the rotation axis rotates and can drive the protrusion pole and reach other positions inside the holding tank, in order to avoid the inconvenient hole of waiting to install of inserting of pole bottom, and after passing first connecting plate and second connecting plate, through the rotation axis, the rotation axis rotates and can drive the protrusion pole and reach the open-ended position, and then the protrusion pole can pass the opening again, the protrusion pole at this moment can prevent that the threaded rod from coming off;

2. the utility model discloses well protruding pole can be when not using, and the locking is in the inside of recess, avoids its influence operation.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

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

fig. 2 is a partial view of fig. 1.

In the figure: 1. a bolt head; 2. a gasket; 3. a threaded rod; 31. a pole bottom; 4. a projecting rod; 5. a rotating shaft; 51. a flange; 6. a ball bearing; 7. a spring; 8. a groove; 9. a knob; 10. accommodating grooves; 11. a first connecting plate; 12. a second connecting plate.

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.

Please refer to fig. 1 and 2, in an embodiment of the present invention, an anti-falling bolt includes a bottom 31, an accommodating groove 10 is formed in the bottom 31, the accommodating groove 10 is used for accommodating a rotating shaft 5, the rotating shaft 5 is rotatably installed in the bottom 31, a groove 8 is formed below one side of the rotating shaft 5, a protruding rod 4 is inserted into the groove 8, a spring 7 is connected between the protruding rod 4 and the groove 8, an opening is formed in one side of the bottom 31, the protruding rod 4 is pushed to compress the spring 7 into the groove 8, the rotating shaft 5 is rotated at this time, the rotating shaft 5 is rotated to drive the protruding rod 4 to reach other positions inside the accommodating groove 10, so as to prevent the bottom 31 from being inconveniently inserted into a hole to be installed;

as shown in fig. 2, the rotatable ball 6 is mounted at one end of the protruding rod 4 penetrating through the rod bottom 31, and the ball 6 can reduce the friction between the protruding rod 4 and the receiving groove 10 when rotating;

after the threaded rod passes through the first connecting plate 11 and the second connecting plate 12, the rotating shaft 5 rotates to drive the protruding rod 4 to reach the position of the opening by rotating the rotating shaft 5, and then the protruding rod 4 can pass through the opening again, and the protruding rod 4 can prevent the threaded rod 3 from falling off;

as shown in fig. 2, the screw rod 3 is further included, the upper end of the rotating shaft 5 extends into the screw rod 3, a flange 51 is arranged on the outer portion of the circumference of the position, close to the upper end, of the screw rod 3, the knob 9 is fixed at the lower end of the rotating shaft 5, the rotating shaft 5 can be rotated by rotating the knob 9, and the flange 51 can prevent the rotating shaft 5 from falling off from the inside of the accommodating groove 10 when rotating;

as shown in fig. 1, a bolt head 1 is fixedly connected to the upper end of a threaded rod 3, a washer 2 is arranged on the lower surface of the bolt head 1, and the threaded rod 3 is connected with a first connecting plate 11 and a second connecting plate 12.

The utility model discloses a theory of operation and use flow: when the device is used, the threaded rod 3 penetrates through the first connecting plate 11 and the second connecting plate 12, the spring 7 can be compressed into the groove 8 by pushing the protruding rod 4 before the threaded rod penetrates through the first connecting plate 11 and the second connecting plate 12, the rotating shaft 5 is rotated, the rotating shaft 5 can drive the protruding rod 4 to reach other positions inside the accommodating groove 10, and the ball 6 can reduce the friction force between the protruding rod 4 and the accommodating groove 10 during rotation so as to prevent the rod bottom 31 from being inconveniently inserted into a hole to be installed;

after passing first connecting plate 11 and second connecting plate 12, through rotation axis 5, rotation axis 5 rotates and to drive protruding pole 4 and reachs the open-ended position, and then protruding pole 4 can pass the opening again, and protruding pole 4 this moment can prevent that the bar of threaded rod 3 from droing, the utility model discloses well protruding pole can be when not using, locks in the inside of recess, avoids its influence operation.

The flange 51 prevents the rotary shaft 5 from falling off from the inside of the receiving groove 10 when rotated.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. A bolt with anti-drop ability, includes pole bottom (31), its characterized in that: holding tank (10) have been seted up to the inside of bottom of rod (31), the inside rotation of bottom of rod (31) installs rotation axis (5), one side below of rotation axis (5) is seted up flutedly (8), protruding pole (4) have been inserted to the inside of recess (8), be connected with spring (7) between protruding pole (4) and recess (8), open one side of bottom of rod (31) and be equipped with the opening, protruding pole (4) opening.

2. A bolt with drop-preventing capability according to claim 1, characterized in that: one end of the protruding rod (4) penetrating through the rod bottom (31) is provided with a rotatable ball (6).

3. A bolt with drop-preventing capability according to claim 1, characterized in that: still include threaded rod (3), the upper end of rotation axis (5) extends to the inside of threaded rod (3), and threaded rod (3) are close to the position circumference outside of upper end and are equipped with flange (51).

4. A bolt with drop-preventing capability according to claim 3, characterized in that: and a knob (9) is fixed at the lower end of the rotating shaft (5).

5. A bolt with drop-preventing capability according to claim 3, characterized in that: the upper end rigid coupling of threaded rod (3) has bolt head (1), and the lower surface of bolt head (1) is equipped with gasket (2).

6. A bolt with anti-drop ability according to claim 5, characterized in that: the threaded rod (3) is connected with the first connecting plate (11) and the second connecting plate (12).

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