CN213929114U

CN213929114U - Four-claw nut structure

Info

Publication number: CN213929114U
Application number: CN202021404094.6U
Authority: CN
Inventors: 夏志文
Original assignee: Kunshan Ruipuda Hardware Co ltd
Current assignee: Kunshan Ruipuda Hardware Co ltd
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2021-08-10
Anticipated expiration: 2030-07-16

Abstract

The utility model discloses a four-jaw nut structure, including nut body and locating pawl, nut body one end inboard is formed with helicitic texture, and the inboard threadless tubular structure that forms of nut body other end, the inboard edge of nut body other end is formed with the chamfer structure, and a plurality of locating pawls fixed positioning are in nut body one end circumference outside, and the locating pawl forms spine column structure for orientation nut body other end direction, the utility model discloses avoid the damage of nut riveting face plating layer, avoided riveting face rust corrosion, improved the life-span of riveting nut and riveting mould, solved the deformation problem that the screw thread brought because of the riveting, improved and turned over the riveting yield, improved the smooth and easy nature of transport of four-jaw nut in the transfer passage of nailing equipment, improved nailing efficiency.

Description

Four-claw nut structure

Technical Field

The utility model relates to a nut especially indicates a four-jaw nut structure.

Background

When the existing wood board is assembled, a nut is usually riveted on the wood board in advance, then the wood board is spliced and assembled through the connection of the nut and a bolt, the nut for riveting is generally made into a nut with a positioning claw, the riveting end of the existing nut with the positioning claw without threads is a right-angle side, when a lower die punch of a riveting die is punched into the riveting end of the nut in the riveting process, the nut is easy to rub against the right-angle side on the edge of the riveting end of the nut to form an iron wire, the iron wire can fall into the nut when being broken in the riveting process, when the nut is screwed with the bolt, the threads are easy to damage, the bolt is difficult to screw or slides, meanwhile, an electroplated layer of the nut flanging surface can be damaged, the nut surface is easy to rust, and when in riveting, the lower punch of the riveting die is easy to generate right-angle friction with the nut riveting end for a long time; the existing nut with the claw is easy to cause thread deformation in the riveting process, normal screw connection with a bolt is affected, the positioning claw of the existing nut with the claw can generate a convex point when being bent, and when the nut with the claw is conveyed in riveting equipment, the convex point is easy to extrude each other and is clamped in a conveying channel, so that smooth conveying is difficult, and normal riveting production is affected.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model provides a four-jaw nut structure, this four-jaw nut structure have improved the riveting smooth and easy nature, have avoided the screw thread damage, have protected riveting face and riveting mould.

The utility model discloses a solve the technical scheme that its technical problem adopted: the utility model provides a four-jaw nut structure, includes nut body and locating pawl, and nut body one end inboard is formed with the helicitic texture, and the inboard threadless tubular structure that forms of nut body other end, the inboard edge of nut body other end is formed with the chamfer structure, and a plurality of locating pawls fixed positioning in the nut body one end circumference outside, and the locating pawl forms spine column structure for orientation nut body other end direction.

As a further improvement, the chamfering structure at the inner edge of the other end of the nut body is a 45-degree inner chamfer.

As a further improvement, the internal diameter of the thread-free tubular structure at the other end of the nut body is larger than the nominal diameter of the thread structure at one end of the nut body.

As a further improvement, the wall thickness of one end of the nut body is 0.73-0.77 mm, and the wall thickness of the thread-free tubular structure at the other end of the nut body is 0.5-0.55 mm.

As the utility model discloses a further improvement, the tip of nut body one end still is formed with the spacer that radially expands outward, and the spacer is fixed to be located on the spacer, has the settlement clearance between spacer and the nut body circumference lateral wall.

As a further improvement, the positioning pawl and the positioning piece are of an integrated stamping and bending forming structure.

As a further improvement, the locating pawl is towards nut body one side for being on a parallel with the straight-sided structure of nut body generating line, and the locating pawl includes first cambered surface structure and second cambered surface structure dorsad nut body one side, and second cambered surface structure diameter is greater than first cambered surface structure diameter, and first cambered surface links up through the step face of indent with the second cambered surface, and first cambered surface aligns with the spacer and links up, and straight-sided structure forms spine column structure jointly on second cambered surface and the locating pawl.

As a further improvement of the utility model, an axial plane passing through the axis of the nut body is a first axial symmetry plane, another axial plane passing through the axis of the nut body is a second axial symmetry plane, the first axial symmetry plane is vertically crossed with the second axial symmetry plane, a first isosceles trapezoid structure and a second isosceles trapezoid structure are formed outside the circumference of the positioning sheet, the two first isosceles trapezoids are symmetrically arranged along the first axial symmetry plane, the second isosceles trapezoid structure is symmetrically arranged along the second axial symmetry plane, one side of the first isosceles trapezoid, which is far away from the axis of the nut body, is a straight line edge parallel to the second axial symmetry plane, one side of the second isosceles trapezoid, which is far away from the axis of the nut body, is a straight line edge parallel to the first axial symmetry plane, one end of the first isosceles trapezoid, which is back to the axis of the nut body, is a gradually shrinking structure in size, one end of the second isosceles trapezoid, which is back to the axis of the nut body, is a gradually expanding structure in size, the four positioning claws are respectively of a bending structure and are integrally formed on two waist edges of the second isosceles trapezoid.

As the utility model discloses a further improvement forms 35 contained angles between the locating pawl on the trapezoidal two waists of waist of every second class, and each locating pawl dorsad nut body side face towards nut body direction slope, and there is 16 contained angles on the trapezoidal straight line limit that is on a parallel with first symmetry axis of waist of the trapezoidal one side of nut body and second class of each locating pawl dorsad.

As a further improvement, the spacer and the nut body are of an integrated structure, and the spacer and one end of the nut body are in transition connection through an arc surface.

The utility model has the advantages that: the utility model has the advantages that the edge of the inner side of the opening end of the thread-free tubular structure of the riveting end of the four-jaw nut is provided with the chamfer matched with the riveting die punch, the friction between the riveting die punch and the edge of the riveting end of the four-jaw nut is avoided when riveting is performed, the phenomenon that iron wires enter the nut to influence the normal screw joint of the nut and the bolt is avoided, the damage of the electroplated layer of the riveting surface of the nut is avoided, the rusting corrosion of the riveting surface is avoided, the service life of the riveting nut and the riveting die is prolonged, meanwhile, the deformation problem caused by the riveting of the thread is solved by expanding the inner diameter of the thread-free tubular structure of the riveting end of the four-jaw nut and reducing the wall thickness, the turnover riveting yield is improved, the positioning claw is not protruded outside the positioning surface any more by bending the positioning claw towards the inner side of the nut body, the conveying smoothness of the four-, the nailing efficiency is improved.

Drawings

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

FIG. 2 is a schematic cross-sectional view of the structure of the present invention;

FIG. 3 is a conveying state diagram of the nailing device in the conveying passage of the nailing device of the present invention;

FIG. 4 is a wall thickness dimension chart of the present invention;

fig. 5 is a schematic plan view of the structure of the present invention.

Detailed Description

Example (b): the utility model provides a four-jaw nut structure, includes nut body 1 and positioning

claw

2, and 1 one end inboard of nut body is formed with

helicitic texture

3, and 1 other end inboard of nut body forms unthreaded tubular structure 4, the inboard edge of 1 other end of nut body is formed with chamfer structure 5, and a plurality of positioning claws 2 are fixed and are positioned in the 1 one end circumference outside of nut body, and positioning claw 2 is for forming spine column structure towards 1 other end direction of nut body. 4 upper portions of tubular structure at the nut other end take new technology to form 45 interior chamfers, 45 chamfers and 45 riveting lower mould drift 6 closely rationally dock in the opening of the 1 other end of nut body during the nailing, can effectively reduce the frictional force between 1 other end opening of nut body and the lower mould, press down through the gas pole and change and turn over and rivet on plank 12, the iron wire that has solved because nut body 1 produces because of the friction when turning over and riveting falls into nut body 1 in, the technical problem who influences the precession of screw thread, the electroplated coating of the face of also having protected nut body 1 to turn over the riveting face, the easy corrosion's of nut body 1 riveting face problem has been solved, and the life of riveting lower mould has been improved greatly.

The chamfer structure 5 at the inner side edge of the other end of the nut body 1 is an inner chamfer of 45 degrees.

The inner diameter of the unthreaded cylindrical structure 4 at the other end of the nut body 1 is larger than the nominal diameter 7 of the threaded structure 3 at one end of the nut body 1. The wall thickness of the unthreaded tubular structure 4 of the nut body 1 is reduced, so that the stress part of the threads moves outwards when the nut body 1 is riveted, the threads are not stressed in the internal threads at one end of the nut body 1 any more, and the problem of deformation of the threads caused by riveting is solved. The wall thickness of the unthreaded tubular structure 4 of the nut body 1 is reduced, so that the downward pressure of the riveting machine cylinder is indirectly reduced, the unthreaded tubular structure 4 at the other end of the nut body 1 is easier to rivet, and the service lives of the riveting machine cylinder and each part are directly prolonged.

The wall thickness of one end of the nut body 1 is 0.73-0.77 mm, and the wall thickness of the unthreaded cylindrical structure 4 at the other end of the nut body 1 is 0.5-0.55 mm.

The end part of one end of the nut body 1 is also provided with a positioning sheet 8 which expands outwards in the radial direction, the positioning claw 2 is fixedly arranged on the positioning sheet 8, and a set gap is formed between the positioning claw 2 and the circumferential outer side wall of the nut body 1. The spacer 8 is used for backstop in the plank surface, forms the backstop step, and simultaneously, the locating pawl 2 sets up on spacer 8, and the 2 shaping of locating pawl of being convenient for, processing conveniently more makes and has the clearance between locating pawl 2 and the nut body 1 for the gomphosis can be formed in the solitary plug plank to locating pawl 2.

The positioning claw 2 and the positioning sheet 8 are of an integrated stamping and bending structure. Through integrative punching press shaping locating pawl 2 of bending on flaky locating piece 8, can improve shaping efficiency, reduce the shaping cost, improve locating pawl 2 intensity, keep spine portion sharp.

The locating pawl is for being on a parallel with the straight face structure of 1 generating line of nut body towards 1 one side of nut body, and 1 one side of nut body is including first cambered surface structure 9 and second cambered surface structure 10 in locating pawl 2 dorsad, and second cambered surface structure 10 diameter is greater than first cambered surface structure 9 diameter, and first cambered surface links up through the step face 11 of indent with the second cambered surface, and first cambered surface aligns with spacer 8 and links up, and the straight face structure forms spine column structure jointly on second cambered surface and the locating pawl 2. The positioning claw 2 is of a triangle-like structure, the end part is sharp, the positioning claw can smoothly penetrate into a wood board, two arc-shaped structures are formed on one side of the positioning claw, which faces away from the nut body 1, the penetration guide is realized, and meanwhile, the concave step surface 11 is formed between the two arc-shaped surfaces, so that the concave step surface forms a barb structure in the wood board and is not easy to separate from the wood board, and the concave step surface 11 can be a straight surface parallel to a bus of the nut body 1 or an inclined surface concave towards the direction of the nut body 1.

An axial surface passing through the axis of the nut body 1 is a first axial symmetrical surface, the other axial surface passing through the axis of the nut body 1 is a second axial symmetrical surface, the first axial symmetrical surface is vertically crossed with the second axial symmetrical surface, a first isosceles trapezoid structure 15 and a second isosceles trapezoid structure 16 are formed on the outer side of the circumference of the positioning sheet 8, the two first isosceles trapezoids are symmetrically arranged along the first axial symmetrical surface, the second isosceles trapezoid structure 16 is symmetrically arranged along the second axial symmetrical surface, one side of the first isosceles trapezoid, far away from the axis of the nut body 1, is a straight line side parallel to the second axial symmetrical surface, one side of the second isosceles trapezoid, far away from the axis of the nut body 1, is a straight line side parallel to the first axial symmetrical surface, one end of the first isosceles trapezoid, back to the axis of the nut body 1, is of a gradually shrinking size structure, one end of the second isosceles trapezoid, back to the axis of the nut body 1, is of a gradually expanding size structure, the four positioning claws 2 are respectively of a bending structure and are integrally formed on two waist edges of the second isosceles trapezoid.

An included angle of 35 degrees is formed between the positioning claws 2 on the two waist edges of each second isosceles trapezoid, each positioning claw 2 inclines towards the direction of the nut body 1 back to one side surface of the nut body 1, and an included angle of 16 degrees is formed between each positioning claw 2 back to one side surface of the nut body 1 and the straight line edge of the second isosceles trapezoid parallel to the first symmetry axis. When the four positioning claws 2 are punched and bent, nonparallel included angles are formed between the positioning claws 2 on the two waist edges of each second isosceles trapezoid, so that the stress directions of the two claws are mutually restricted when the nut is fastened and withdrawn with a screw, and the nut body 1 cannot be rotated in a wood board or plastic because of deformation of four teeth caused by fastening or withdrawing the screw.

Four locating pawl 2 dorsad 1 side of nut body incline towards 1 direction of nut body for the trapezoidal sharp limit of second is a little higher than the locating pawl 2 surface of its both sides, it slides to do benefit to the striking when four-jaw nut carries in the transfer passage 14 of nailing equipment more, card material and lock that the extrusion caused about the locating pawl 2 bump because of being located the trapezoidal sharp limit both sides of second of having avoided four-jaw nut when nailing equipment track pay-off are died, the continuity of pay-off has been improved greatly, and is smooth and easy, and direct production efficiency is improved.

The locating piece 8 and the nut body 1 are of an integrated structure, and the locating piece 8 is in transition connection with one end of the nut body 1 through an arc surface. The strength of the whole four-claw nut is improved, the riveting firmness on the wood board is improved, the nut body 1 and the positioning piece 8 are in round corner transition, the internal stress is avoided, and meanwhile the interference with the wood board is avoided.

Claims

1. The utility model provides a four-jaw nut structure which characterized in that: including nut body (1) and locating claw (2), nut body one end inboard is formed with helicitic texture (3), and nut body other end inboard forms unthreaded tubular structure (4), the inboard edge of nut body other end is formed with chamfer structure (5), and a plurality of locating claws are fixed to be located the nut body one end circumference outside, and the locating claw forms spine column structure for orientation nut body other end direction.

2. The four-jaw nut structure of claim 1, wherein: the chamfer structure at the inner side edge of the other end of the nut body is a 45-degree inner chamfer.

3. The four-jaw nut structure of claim 1, wherein: the inner diameter of the thread-free cylindrical structure at the other end of the nut body is larger than the nominal diameter (7) of the thread structure at one end of the nut body.

4. The four-jaw nut arrangement of claim 3, wherein: the wall thickness of one end of the nut body is 0.73-0.77 mm, and the wall thickness of the thread-free cylindrical structure at the other end of the nut body is 0.5-0.55 mm.

5. The four-jaw nut structure of claim 1, wherein: the end part of one end of the nut body is also provided with a positioning sheet (8) which is radially expanded outwards, the positioning claw is fixedly arranged on the positioning sheet, and a set gap is formed between the positioning claw and the circumferential outer side wall of the nut body.

6. The four-jaw nut arrangement of claim 5, wherein: the positioning claw and the positioning sheet are of an integrated stamping and bending structure.

7. The four-jaw nut arrangement of claim 6, wherein: the locating pawl is for being on a parallel with the straight face structure of nut body generating line towards nut body one side, and locating pawl nut body one side dorsad includes first cambered surface structure (9) and second cambered surface structure (10), and second cambered surface structure diameter is greater than first cambered surface structure diameter, and first cambered surface links up through step face (11) of indent with the second cambered surface, and first cambered surface aligns with the spacer and links up, and the straight face structure forms spine column structure jointly on second cambered surface and the locating pawl.

8. The four-jaw nut arrangement of claim 7, wherein: an axial surface passing through the axis of the nut body is a first axial symmetrical surface, the other axial surface passing through the axis of the nut body is a second axial symmetrical surface, the first axial symmetrical surface is vertically crossed with the second axial symmetrical surface, a first isosceles trapezoid structure (15) and a second isosceles trapezoid structure (16) are formed on the outer side of the circumference of the positioning sheet, the two first isosceles trapezoids are symmetrically arranged along the first axial symmetrical surface, the second isosceles trapezoid structure is symmetrically arranged along the second axial symmetrical surface, one side of the first isosceles trapezoid, far away from the axis of the nut body, is a straight line side parallel to the second axial symmetrical surface, one side of the second isosceles trapezoid, far away from the axis of the nut body, is a straight line side parallel to the first axial symmetrical surface, one end of the first isosceles trapezoid, back to the axis of the nut body, is of a gradually-shrinking size structure, and one end of the second isosceles trapezoid, back to the axis of the nut body, is of a gradually-enlarging size structure, the four positioning claws are respectively of a bending structure and are integrally formed on two waist edges of the second isosceles trapezoid.

9. The four-jaw nut arrangement of claim 8, wherein: an included angle of 35 degrees is formed between the positioning claws on the two waist edges of each second isosceles trapezoid, each positioning claw is inclined towards the direction of the nut body back to one side surface of the nut body, and a 16-degree included angle is formed between one side surface of each positioning claw back to the nut body and the straight line edge of each second isosceles trapezoid parallel to the first symmetry axis.

10. The four-jaw nut arrangement of claim 6, wherein: the locating piece and the nut body are of an integrally formed structure, and the locating piece is in transition connection with one end of the nut body through an arc surface.