CN213298555U

CN213298555U - Anti-loosening bolt

Info

Publication number: CN213298555U
Application number: CN202022019862.2U
Authority: CN
Inventors: 陈寿兰
Original assignee: Hebei Xitie Fastener Co ltd
Current assignee: Hebei Xitie Fastener Co ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-05-28
Anticipated expiration: 2030-09-16

Abstract

The utility model relates to a bolt technical field just discloses a check bolt, including bolt head, first work piece and second work piece, first work piece is located the bolt head bottom, the second work piece is located first work piece bottom, the threaded rod of first work piece and second work piece is run through in proper order to the bottom fixedly connected with one end of bolt head, the outside threaded connection of threaded rod has the nut that is located second work piece bottom, the deep hole has been seted up to the inside of threaded rod, the outside of threaded rod set up quantity be two and with the spacing groove of deep hole intercommunication, the inside fixedly connected with one end of bolt head passes bolt head, deep hole and spacing groove in proper order and extends to the gag lever post in the nut outside. This check bolt has solved current bolt and has mostly not possessed locking function, and in use often appears becoming flexible because mechanical structure's vibrations and impact, need regularly to its inspect and maintain, the problem that wastes time and energy.

Description

Anti-loosening bolt

Technical Field

The utility model relates to a bolt technical field specifically is a check bolt.

Background

The bolt is a mechanical part, and a fastener consisting of a bolt head and a screw is matched with a nut and used for fastening and connecting two parts with through holes.

The existing bolts in the market are more in types and already form a standard system, but most of the existing bolts do not have a locking function, are often loosened due to vibration and impact of a mechanical structure in use, need to be periodically overhauled, are time-consuming and labor-consuming, and therefore the anti-loosening bolt is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a locking bolt possesses advantages such as can prevent not hard up, has solved current bolt and has mostly not possessed locking function, and in use often appears becoming flexible because mechanical structure's vibrations and impact, needs regularly to overhaul it, the problem that wastes time and energy.

(II) technical scheme

In order to realize the above-mentioned purpose that can prevent not hard up, the utility model provides a following technical scheme: a check bolt comprises a bolt head, a first workpiece and a second workpiece, wherein the first workpiece is positioned at the bottom of the bolt head, the second workpiece is positioned at the bottom of the first workpiece, the bottom of the bolt head is fixedly connected with a threaded rod, one end of the threaded rod penetrates through the first workpiece and the second workpiece in sequence, the outer side of the threaded rod is in threaded connection with a nut positioned at the bottom of the second workpiece, a deep hole is formed in the threaded rod, the outer side of the threaded rod is provided with two limiting grooves which are communicated with the deep holes, the inner part of the bolt head is fixedly connected with a limiting rod, one end of the limiting rod sequentially penetrates through the bolt head, the deep holes and the limiting grooves and extends to the outer side of the nut, the inside fixedly connected with one end of nut extends to the nut top and with the elastic washer of second work piece bottom in close contact with, the through-hole that is located the threaded rod outside is all seted up to the inside of first work piece and second work piece.

Preferably, the bottom of the bolt head is hexagonal, and a connecting groove located on the outer side of the limiting rod is formed in the bolt head.

Preferably, the width of the limiting groove is larger than the diameter of the limiting rod, and the included angle between the centers of the two limiting grooves and the axis connecting line of the threaded rod is one hundred fifty degrees.

Preferably, the top of the nut is provided with an annular groove matched with the elastic washer in shape, and the bottom of the nut is in an arc shape.

Preferably, the elastic washer is a rubber washer, and the inner diameter of the elastic washer is larger than the diameter of the through hole.

Preferably, two through holes are concentrically distributed, and the diameter of each through hole is larger than that of the threaded rod.

(III) advantageous effects

Compared with the prior art, the utility model provides a check bolt possesses following beneficial effect:

the check bolt is provided with the limiting rod, when the check bolt is used for connecting workpieces, a first workpiece and a second workpiece which need to be connected are combined together and two through holes are aligned, then the threaded rod is inserted into the through hole and penetrates through the first workpiece and the second workpiece, then the threaded hole on the nut is aligned with the lower end of the threaded rod, the nut is screwed to move along the threaded rod to the direction close to the second workpiece, the elastic washer is contacted with the bottom of the second workpiece, the nut is continuously screwed to enable the elastic washer to be extruded and deformed, the elastic force of the elastic washer enables the joint surface between the nut and the threaded rod to always have the pressure of interaction, then the limiting rod in a vertical state is bent from the deep hole along the limiting groove to be attached to the outer side of the nut, so as to prevent the relative rotation of the nut and the threaded rod, thereby realizing the effect of preventing the bolt connection from loosening.

Drawings

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

fig. 2 is a front view of the threaded rod of the present invention;

fig. 3 is a bottom view of the threaded rod of the present invention.

In the figure: 1. a bolt head; 2. a first workpiece; 3. a second workpiece; 4. a threaded rod; 5. a nut; 6. deep holes; 7. a limiting groove; 8. a limiting rod; 9. an elastic washer; 10. and a through hole.

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. 1-3, a check bolt comprises a bolt head 1, a first workpiece 2 and a second workpiece 3, wherein the bottom of the bolt head 1 is hexagonal, a connecting groove located on the outer side of a limiting rod 8 is formed in the bolt head 1, the first workpiece 2 is located at the bottom of the bolt head 1, the second workpiece 3 is located at the bottom of the first workpiece 2, a threaded rod 4 with one end sequentially penetrating through the first workpiece 2 and the second workpiece 3 is fixedly connected to the bottom of the bolt head 1, the width of the limiting groove 7 is larger than the diameter of the limiting rod 8, an included angle between the centers of the two limiting grooves 7 and the axis connecting line of the threaded rod 4 is one hundred and fifty degrees, a nut 5 located at the bottom of the second workpiece 3 is in threaded connection with the outer side of the threaded rod 4, an annular groove matched with the shape of an elastic washer 9 is formed in the top of the nut 5, the bottom of the nut 5 is arc-, the spacing groove 7 that quantity is two and communicates with deep hole 6 is seted up in the outside of threaded rod 4, bolt head 1's inside fixedly connected with one end passes bolt head 1 in proper order, deep hole 6 and spacing groove 7 extend to the gag lever post 8 in the 5 outsides of nut, the inside fixedly connected with one end of nut 5 extends to the 5 tops of nut and the elastic washer 9 with 3 bottom in close contact with of second work piece, elastic washer 9 is the rubber packing ring, and the internal diameter of elastic washer 9 is greater than the diameter of through-hole 10, the through-hole 10 that is located the threaded rod 4 outsides is all seted up to the inside of first work piece 2 and second work piece 3, two through-holes 10 are concentric distribution, and the diameter of through-hole 10 is greater than the diameter of threaded.

In summary, in the anti-loose bolt, by providing the limit rod 8, when the anti-loose bolt is used for connecting workpieces, the first workpiece 2 and the second workpiece 3 to be connected are combined together and two through holes 10 are aligned, then the threaded rod 4 is inserted into the through hole 10 and penetrates through the first workpiece 2 and the second workpiece 3, then the threaded hole on the nut 5 is aligned with the lower end of the threaded rod 4, the nut 5 is screwed to move along the threaded rod 4 to the direction close to the second workpiece 3, the elastic washer 9 is contacted with the bottom of the second workpiece 3, the nut 5 is continuously screwed to enable the elastic washer 9 to be extruded and deformed, the elastic force of the elastic washer 9 enables the joint surface between the nut 5 and the threaded rod 4 to always have mutual pressure, then the limit rod 8 in a vertical state is bent from the deep hole 6 along the limit groove 7 to be attached to the outer side of the nut 5 so as to prevent the nut 5 and the threaded rod 4 from rotating relatively, thereby realized preventing that bolted connection from appearing not hard up effect, solved current bolt and mostly not possess locking function, in use often appears becoming flexible because of mechanical structure's vibrations and impact, need regularly overhaul it, the problem that wastes time and energy.

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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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. A check bolt comprising a bolt head (1), a first workpiece (2) and a second workpiece (3), characterized in that: the first workpiece (2) is positioned at the bottom of the bolt head (1), the second workpiece (3) is positioned at the bottom of the first workpiece (2), one end of the bottom of the bolt head (1) is fixedly connected with a threaded rod (4) which sequentially penetrates through the first workpiece (2) and the second workpiece (3), the outer side of the threaded rod (4) is in threaded connection with a nut (5) which is positioned at the bottom of the second workpiece (3), a deep hole (6) is formed in the threaded rod (4), two limiting grooves (7) which are communicated with the deep hole (6) are formed in the outer side of the threaded rod (4), one end of the inner part of the bolt head (1) is sequentially connected with the limiting rods (8) which sequentially penetrate through the bolt head (1), the deep hole (6) and the limiting grooves (7) and extend to the outer side of the nut (5), one end of the inner part of the nut (5) is fixedly connected with an elastic washer (9) which extends to the top of the nut (5) and is in close, and through holes (10) positioned on the outer side of the threaded rod (4) are formed in the first workpiece (2) and the second workpiece (3).

2. A check bolt as defined in claim 1, wherein: the bottom of the bolt head (1) is hexagonal, and a connecting groove located on the outer side of the limiting rod (8) is formed in the bolt head (1).

3. A check bolt as defined in claim 1, wherein: the width of the limiting grooves (7) is larger than the diameter of the limiting rod (8), and the included angle between the centers of the two limiting grooves (7) and the axis connecting line of the threaded rod (4) is one hundred and fifty degrees.

4. A check bolt as defined in claim 1, wherein: the top of the nut (5) is provided with an annular groove matched with the elastic washer (9) in shape, and the bottom of the nut (5) is arc-shaped.

5. A check bolt as defined in claim 1, wherein: the elastic gasket (9) is a rubber gasket, and the inner diameter of the elastic gasket (9) is larger than the diameter of the through hole (10).

6. A check bolt as defined in claim 1, wherein: the two through holes (10) are concentrically distributed, and the diameter of each through hole (10) is larger than that of the threaded rod (4).