CN112303098A

CN112303098A - Anti-loosening bolt fastener

Info

Publication number: CN112303098A
Application number: CN202011288765.1A
Authority: CN
Inventors: 张琼; 崔路晋
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-02-02
Anticipated expiration: 2040-11-17
Also published as: CN112303098B; WO2022104936A1

Abstract

The invention discloses a bolt fastener for preventing looseness, which comprises: bolt, nut, fastening connection spare, its characterized in that: the fastening connecting piece comprises a lock cap fastener or a lock ring fastener, a limiting mechanism is formed between the groove of the bolt and the buckling piece of the lock cap fastener, and a locking mechanism is formed between the lock cap fastener and the nut or the limiting mechanism is formed between the groove of the bolt and the buckling piece of the lock ring fastener. Compared with the traditional fastening mode of the existing bolt and nut, the technical scheme provided by the invention is that the temporary locking between the bolt and the nut is completed through the fastening connecting piece, so that the problem that the nut is loosened due to vibration is solved.

Description

Anti-loosening bolt fastener

Technical Field

The invention relates to the technical field of bolt and nut connecting pieces, in particular to an anti-loosening bolt fastener.

Background

The connecting mode of the bolt and the nut is the most basic form in fastening connecting pieces, is widely applied to the fields of mechanical equipment, automobiles, trains, aerospace, aviation and the like, and particularly for an engineering machinery assembly factory, the fastener of the bolt and the nut has the advantages of convenience for standardized mass production, simple structure, low cost, convenience in installation, easiness in disassembly and the like. However, in the actual use process, when the nut is vibrated, subjected to high and low load changes and impact or is in a working state for a long time, the nut is very easy to loosen, the running performance of the equipment is directly influenced, the safety and reliability of the equipment are reduced, the normal work of the equipment is influenced by a light person, economic losses are caused, and the personal safety is influenced by a heavy person.

In the prior art, due to the defects in the structural design of the fastening piece and the lack of the connection of anti-loose parts and other reasons, the bolt and the nut are still in a separated state after being fastened and connected, only the mutual limitation of the spiral line is received, and no other part is connected and limited between the bolt and the nut.

Disclosure of Invention

Aiming at the defects of structural design defects of fasteners and lack of connecting anti-loosening parts in the prior art, the invention provides an anti-loosening bolt fastener.

In order to realize the purpose of the invention, the invention adopts the technical scheme that:

a locking bolt fastener, including bolt, nut, wherein the bolt is made up of bolt head and bolt body two parts, there are external thread section and smooth section on the bolt body, there are internal threads corresponding to external thread of the bolt body in the round hole of the nut, characterized by that, have multiple groups of grooves evenly distributed along the axial direction on the radial cross-section of the bolt, there are lugs in the bottom surface interval arrangement of the groove, the length of the groove extends to the smooth part of the bolt along the radial direction of the bolt, the depth of the groove is greater than the external thread depth of the bolt at least; the clamping device further comprises a fastening connecting piece for movably connecting the bolt and the nut, and a plurality of groups of clamping pieces corresponding to the grooves are arranged on the fastening connecting piece.

Further, the fastening connection comprises a locking cap fastener or a locking ring fastener.

Furthermore, the lock cap fastener is a cavity body which is opened on the top wall and just passes through the round hole of the bolt, a plurality of groups of buckle pieces corresponding to the bolt are arranged on the inner side of the round hole of the lock cap fastener, each buckle piece extends to the bottom surface of the groove of the bolt along the center of the round hole along the horizontal direction, and is just clamped between two adjacent convex blocks, and an annular groove or an annular tooth is arranged on the inner wall of the cavity body.

Further, the nut is divided into a polygonal column body part and a cylinder body part, and an annular groove or an inner annular tooth is arranged on the periphery of the cylinder body part.

Further, the lock nut fastener is attached to the nut after being combined, and the lock nut fastener and the nut are prevented from sliding up and down relatively through mutual engagement between annular teeth of the lock nut fastener and annular grooves of the nut or mutual engagement between the annular grooves of the lock nut fastener and the annular teeth of the nut.

Further, the annular teeth and the annular grooves can be arranged in a single group or in multiple groups.

Furthermore, one end of the nut is provided with an annular groove with an inverted T-shaped cross section, and the annular groove is communicated with the end face of the nut.

Furthermore, the locking ring fastener is a circular ring with a soil-shaped cross section, a plurality of groups of hinged lock catches are uniformly arranged on the circular ring, and the locking ring fastener is arranged in the circular ring groove and can horizontally rotate relative to the nut.

Further, the hinged lock catch comprises a lock catch seat, a pin shaft and a buckling piece, the lock catch seat is fixed on the circular ring, a through hole is formed in the buckling piece, the pin shaft is used for connecting the buckling piece to the lock catch seat in a hinged mode, and the buckling piece can be turned over to pull the groove of the bolt.

Furthermore, the section of the convex block is in a right trapezoid shape or a right-angle fan shape, one surface of the convex block facing the bolt head is a plane perpendicular to the bolt body, and the surface of the convex block facing away from the bolt head is a bevel face or an arc face.

Compared with the prior art, the invention has the beneficial effects that:

compared with the traditional fastening mode of the existing bolt and nut, the technical scheme provided by the invention is that the bolt and the nut after fastening and connection are temporarily locked together through the fastening and connecting piece, the nut on the bolt is screwed up, the lock cap penetrates through the bolt and is sleeved on the nut, at the moment, the limiting teeth on the lock cap are just clamped in the limiting grooves of the bolt and are positioned between two adjacent lugs to form a limiting mechanism between the bolt and the nut, and meanwhile, the annular grooves or the annular teeth on the lock cap are also just meshed with the corresponding annular teeth or the corresponding annular grooves on the nut to form a locking mechanism between the lock cap and the nut; or after the nut on the bolt is screwed, the locking ring fastener is rotated to enable the fastener to align with the groove of the bolt, and the fastener is turned over and pulled into the groove of the bolt and positioned between two adjacent lugs to form a locking mechanism between the lock nut and the nut.

Thus, temporary locking is achieved between the bolt and the nut. Therefore, the defect of structural design of the fastening piece is overcome, the defect of lack of connecting anti-loosening parts is overcome, and the problem of looseness caused by vibration is solved from the main reason of looseness of the screw cap.

Drawings

FIG. 1 is a schematic view of a bolt according to the present invention;

FIG. 2 is a first view of a cutaway bolt of the present invention;

FIG. 3 is a second schematic view of a sectioning bolt of the present invention;

FIG. 4 is a schematic view of a nut and nut fastener of the present invention;

FIG. 5 is a first view of the cutaway locking cap of the present invention;

FIG. 6 is a first view of the cutting nut of the present invention;

FIG. 7 is a second view of the cutaway locking cap of the present invention;

FIG. 8 is a second view of the cut nut of the present invention;

FIG. 9 is a schematic view of a nut and shackle fastener of the present invention;

FIG. 10 is a third view of the cut nut of the present invention;

FIG. 11 is a schematic view of a cutaway ring of the present invention;

FIG. 12 is a schematic view of the construction of the shackle fastener of the present invention;

FIG. 13 is an illustration of the effect of the combination of the screw bolt and the locking nut fastener of the present invention;

FIG. 14 is a view showing the effect of the combined use of the bolt and the shackle fastener according to the present invention;

in the figure: the bolt is 1, and the recess is 101, and the lug is 102, and the bolt head is 103, and the bolt body is 104, and the nut is 2, and the ring groove is 201, and the cylinder part is 202, and the polygon prism somatic part is 203, and the lock nut fastener is 3, and the cavity body is 301, and the round hole is 302, and the lock ring fastener is 4, and the ring is 401, and articulated hasp is 402, and the hasp seat is 4021, and the round pin axle is 4022, and the buckle spare is 5, and the annular tooth is 6, and the ring channel is 7.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. It should be noted that the terms "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top", "inner" and "outer" in the terms refer to directions in the geometric center of a particular component, respectively.

Example one

As shown in fig. 1 and 13, a locking bolt fastener includes a bolt 1 and a nut 2, wherein the bolt 1 is composed of a bolt head 103 and a bolt body 104, the bolt body 104 is provided with an external thread section and a smooth section, a round hole of the nut 2 is provided with an internal thread corresponding to the external thread of the bolt body 104, a plurality of groups of grooves 101 are uniformly arranged on a radial cross section of the bolt 1 along an axial direction, bumps 102 are discontinuously arranged on the bottom surfaces of the grooves 101, the length of the grooves 101 extends to the smooth part of the bolt 1 along the radial direction of the bolt, and the depth of the grooves 101 is at least greater than the depth of the external thread of the bolt 1; and the lock cap fastener 3 is used for movably connecting the bolt and the nut.

As shown in fig. 3, the cross section of the protrusion 102 is a right trapezoid, a surface of the protrusion facing the bolt head is a plane perpendicular to the bolt body, and a surface facing away from the bolt head is a slanted surface.

As shown in fig. 4 and 5, the lock cap fastener 3 is a cavity 301 that is opened on the top wall and passes through the bolt circular hole 302, a plurality of groups of fasteners 5 corresponding to the bolt 1 are arranged inside the circular hole 302 of the lock cap fastener 3, each fastener 5 extends to the bottom surface of the groove 101 of the bolt 1 along the horizontal direction to the center of the circular hole 302 and is just clamped between two adjacent protrusions 102, and an annular groove 7 is arranged on the inner wall of the cavity 301.

As shown in fig. 4 and 8, the nut 2 is divided into two segments, a polygonal prism portion and a cylindrical portion, and the cylindrical portion 202 is provided with annular teeth 6 at its periphery.

As shown in fig. 4, 5 and 8, after the locking cap fastening member 3 is combined with the nut 2 and then attached to the nut, the locking cap fastening member 3 and the nut 2 are prevented from sliding up and down relatively by the mutual engagement between the annular groove 7 of the locking cap fastening member 3 and the annular teeth 6 of the nut 2.

As shown in fig. 4, 5 and 8, the annular teeth 6 and the annular grooves 7 may be arranged in a single set or in multiple sets.

As shown in fig. 4, 5 and 8, the annular teeth 6 and the annular grooves 7 may be continuous linear strips or may be discontinuous dot blocks.

The technical scheme provided by the embodiment is that a bolt and a nut which are fastened and connected are temporarily locked together through a fastening connecting piece, after the nut on the bolt is screwed, a lock cap penetrates through the bolt and is sleeved on the nut, at the moment, limiting teeth on the lock cap are just clamped in limiting grooves of the bolt and are positioned between two adjacent lugs to form a limiting mechanism between the bolt and the nut, and meanwhile, annular grooves or annular teeth on the lock cap are also just meshed with corresponding annular teeth or annular grooves on the nut to form a locking mechanism between the lock cap and the nut.

Example two

As shown in fig. 4 and 7, the lock cap fastener 3 is a cavity 301 that is opened on the top wall and passes through the bolt circular hole 302, a plurality of groups of fasteners 5 corresponding to the bolt 1 are arranged inside the circular hole 302 of the lock cap fastener 3, each fastener 5 extends to the bottom surface of the groove 101 of the bolt 1 along the horizontal direction to the center of the circular hole 302 and is just clamped between two adjacent protrusions 102, and the inner wall of the cavity 301 is provided with annular teeth 6.

As shown in fig. 4 and 6, the nut 2 is divided into two segments, a polygonal prism portion and a cylindrical portion, and an annular groove 7 is formed at the periphery of the cylindrical portion 202.

As shown in fig. 4, 6 and 7, after the locking cap fastener 3 and the nut 2 are combined and attached to each other, the locking cap fastener 3 and the nut 2 are prevented from sliding up and down relatively by the mutual engagement between the annular teeth 6 of the locking cap fastener 3 and the annular groove 7 of the nut 2.

As shown in fig. 4, 6 and 7, the annular teeth 6 and the annular grooves 7 may be arranged in a single group or in multiple groups.

As shown in fig. 4, 6 and 7, the annular teeth 6 and the annular grooves 7 may be continuous linear strips or intermittent dot blocks.

EXAMPLE III

As shown in fig. 1, 9 and 14, a locking bolt fastener includes a bolt 1 and a nut 2, where the bolt 1 is composed of a bolt head 103 and a bolt body 104, the bolt body 104 is provided with an external thread section and a smooth section, a round hole of the nut 2 is provided with an internal thread corresponding to the external thread of the bolt body 104, a plurality of sets of grooves 101 are uniformly arranged on a radial cross section of the bolt 1 along an axial direction, bumps 102 are discontinuously arranged on the bottom surfaces of the grooves 101, the length of the grooves 101 extends to the smooth part of the bolt 1 along the radial direction of the bolt, and the depth of the grooves 101 is at least greater than the depth of the external thread of the bolt 1; a locking ring fastener 4 for movably connecting the bolt and the nut is also included.

As shown in fig. 10, one end of the nut 2 is provided with an annular groove 201 with an inverted "T" shaped cross section, and the annular groove 201 is communicated with the end face of the nut 2.

As shown in fig. 11, the locking ring fastener 4 is a circular ring 401 with a cross section of a "soil" shape, a plurality of sets of hinged latches 402 are uniformly arranged on the circular ring 401, and the locking ring fastener 4 is arranged in the circular ring groove 201 and can horizontally rotate relative to the nut 2.

As shown in fig. 12, the hinge latch 402 includes a latch seat 4021, a pin 4022, and a locking member 5, the latch seat 4021 is fixed on the ring 401, the locking member 5 is provided with a through hole, the pin 4022 connects the locking member 5 to the latch seat 4021 through a hinge, and the locking member 5 can be turned over and pulled into the groove 201 of the bolt 1.

The technical scheme provided by the embodiment is that a bolt and a nut which are fastened and connected are temporarily locked together through a fastening connecting piece, after the nut on the bolt is screwed, a lock ring fastener is rotated to enable the fastener to align with a groove of the bolt, and the fastener is turned over and pulled into the groove of the bolt and positioned between two adjacent lugs to form a locking mechanism between a lock cap and the nut.

Example four

As shown in fig. 2, the cross section of the protrusion 102 is a right-angle sector, the surface of the protrusion facing the bolt head is a plane perpendicular to the bolt body, and the surface facing away from the bolt head is an arc surface.

The technical scheme provided by the invention is that a bolt and a nut which are fastened and connected are temporarily locked together through a fastening connecting piece, after the nut on the bolt is screwed, a lock cap penetrates through the bolt and is sleeved on the nut, at the moment, limiting teeth on the lock cap are just clamped in limiting grooves of the bolt and are positioned between two adjacent lugs to form a limiting mechanism between the bolt and the nut, and meanwhile, annular grooves or annular teeth on the lock cap are also just meshed with corresponding annular teeth or annular grooves on the nut to form a locking mechanism between the lock cap and the nut.

EXAMPLE five

EXAMPLE six

Of course, the first, second, fourth and fifth embodiments of the present invention can also use chemical glue adhesion between the nut 2 and the nut fastener 3 to achieve temporary locking effect.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. All embodiments are not exemplified here. Any modification, equivalent replacement, and improvement made within the design concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a locking bolt fastener that moves, including bolt (1), nut (2), wherein bolt (1) comprises bolt head (103) and bolt body (104) two parts, be equipped with external screw thread section and smooth section on bolt body (104), be equipped with the internal thread that corresponds with the external screw thread of bolt body (104) in the round hole of nut (2), characterized by, evenly arranged multiunit recess (101) along the axial direction on the radial cross-section of bolt (1), the bottom surface intermittent type of recess (101) is arranged has lug (102), the length of recess (101) extends to the smooth part of bolt (1) along the radial direction of bolt, the degree of depth of recess (101) is greater than the external screw thread degree of depth of bolt (1) at least; the clamping device further comprises a fastening connecting piece for movably connecting the bolt and the nut, and a plurality of groups of clamping pieces (5) corresponding to the grooves (101) are arranged on the fastening connecting piece.

2. A locking bolt fastener according to claim 1, characterized in that the fastening connection comprises a locking cap fastener (3) or a locking ring fastener (4).

3. The locking bolt fastener of claim 2, characterized in that the lock nut fastener (3) is a cavity body (301) with a top wall opened with a hole (302) passing through the bolt hole, a plurality of sets of fasteners (5) corresponding to the bolt (1) are arranged inside the hole (302) of the lock nut fastener (3), each fastener (5) extends to the bottom of the groove (101) of the bolt (1) along the horizontal direction toward the center of the hole (302) and is clamped between two adjacent projections (102), and the inner wall of the cavity body (301) is provided with a circular groove (7) or a circular tooth (6).

4. A locking bolt fastener according to claim 2 or 3, characterized in that the nut (2) is divided into two segments, a polygonal prism portion and a cylindrical portion, and an annular groove (7) or an annular tooth (6) is provided on the periphery of the cylindrical portion (202).

5. The anti-loosening bolt fastener according to claim 4, wherein after the locking cap fastener (3) and the nut (2) are combined and attached to each other, the locking cap fastener (3) and the nut (2) are prevented from sliding up and down relatively by means of mutual engagement between the annular teeth (6) of the locking cap fastener (3) and the annular groove (7) of the nut (2) or mutual engagement between the annular groove (7) of the locking cap fastener (3) and the annular teeth (6) of the nut (2).

6. A locking bolt fastener according to claim 5, characterized in that the annular teeth (6) and the annular grooves (7) can be arranged in a single group or in multiple groups.

7. A locking bolt fastener according to claim 2, characterized in that one end of the nut (2) is provided with an annular groove (201) with an inverted "T" shaped cross section, and the annular groove (201) is communicated with the end face of the nut (2).

8. A locking bolt fastener according to claim 7, characterized in that the locking ring fastener (4) is a circular ring (401) having a cross section of a "soil" shape, a plurality of sets of hinged catches (402) are uniformly provided on the circular ring (401), and the locking ring fastener (4) is disposed in the circular groove (201) and can be horizontally rotated with respect to the nut (2).

9. The locking bolt fastener of claim 8, characterized in that the hinged lock catch (402) comprises a lock catch seat (4021), a pin shaft (4022) and a fastener (5), the lock catch seat (4021) is fixed on the ring (401), the fastener (5) is provided with a through hole, the pin shaft (4022) is used for connecting the fastener (5) to the lock catch seat (4021) in a hinged manner, and the fastener (5) can be turned and pulled to the groove (201) of the bolt (1).

10. A locking bolt fastener according to any one of claims 1 to 9, characterised in that the cross-section of the projection (102) is a right trapezoid or a right sector, the face of the projection (102) facing the bolt head (103) is a plane perpendicular to the bolt body (104), and the face facing away from the bolt head (103) is a bevelled or cambered surface.