CN113494508B

CN113494508B - Reducing ring groove rivet

Info

Publication number: CN113494508B
Application number: CN202010201117.1A
Authority: CN
Inventors: 陈文彬; 罗基留
Original assignee: Gebel Innovation And Entrepreneurship Co Ltd Liability; Huaqi Industry Co ltd
Current assignee: Gebel Innovation And Entrepreneurship Co Ltd Liability; Huaqi Industry Co ltd
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2022-11-01
Anticipated expiration: 2040-03-20
Also published as: CN113494508A

Abstract

The invention provides a reducing ring groove rivet, which at least comprises a stud, wherein the stud is provided with a head part and a stud body connected with the head part, a plurality of ring groove groups are equidistantly arranged on the stud body, each ring groove group comprises a first ring groove and a second ring groove adjacent to the first ring groove, the first ring groove is provided with a first groove bottom and a first groove peak adjacent to the first groove bottom, the second ring groove is provided with a second groove bottom and a second groove peak adjacent to the second groove bottom, the diameter of the second groove bottom is smaller than that of the first groove bottom, or the diameter of the second groove peak is smaller than that of the first groove peak, so that any ring groove group in the plurality of ring groove groups can be selected as a fracture part during breaking operation.

Description

Reducing ring groove rivet

Technical Field

The invention relates to a structural technology of a fixed component, in particular to a reducing ring groove rivet.

Background

The implementation of ring groove rivets falls into two main categories, one of which is conventional ring groove rivets and the other of which is ring groove rivets with a breakneck groove.

As shown in fig. 1 and 2, the conventional circular groove rivet includes a PIN (PIN) 10 and a COLLAR (COLLAR) 20 penetrating the PIN 10, wherein the PIN 10 has a HEAD (HEAD) 11 and a BODY (BODY) 12 connected to the HEAD 11, and the BODY 12 is provided with a plurality of circular grooves 121. After the bolt body 12 passes through the plurality of workpieces 100, the collar 20 is sleeved on the protruding part of the bolt body 12, and then the tool 200 pulls the rear part of the bolt body 12 and pushes the collar 20, so that the collar 20 is deformed and then protrudes into each adjacent annular groove 121 to be engaged and fixed, which is called as swaging. Then, the bolt body 12 is broken at the rear and removed, so that the head 11 and the collar 20 tightly clamp the plurality of workpieces 100 therebetween, thereby completing the riveting operation. Ideally, the fracture 13 is generated at a position close to the end of the collar 20, but the shape of the fracture 13 is not as expected, and as shown in fig. 2, when the fracture 13 has a larger inclination, the collar 20 is easy to be incompletely engaged to affect the riveting effect, and the resultant sharp projection may cause danger.

As shown in fig. 3 and 4, the conventional circular groove rivet with a neck breaking groove is different from the conventional circular groove rivet in that a plurality of circular grooves 121 are formed at a position of a front section of a bolt body 12 close to a head 11, a neck breaking groove 122 is formed at a middle section, and a tail portion (Pintail) 123 is formed at a rear section. After the bolt body 12 passes through a plurality of workpieces 100, the collar 20 is sleeved on the protruding part of the bolt body 12, and then the tool 200 pulls the nail tail part 123 and pushes the collar 20, so that the collar 20 is deformed and then protrudes into each adjacent annular groove 121 to be engaged and fixed, and the step is called swaging. Then, the excess nail tail 123 is pulled apart and removed, so that the head 11 and the collar 20 tightly clamp the plurality of workpieces 100 therebetween, thereby completing the riveting operation.

The neck breaking groove 122 is to make the ring groove rivet easier to be broken, so the diameter of the neck breaking groove 122 must be smaller than that of the ring groove 121, so that the breaking part 13 when the stud 10 is broken is just located in the neck breaking groove 122, and the position and the breaking condition of the breaking part 13 are controlled to prevent the breaking part 13 from presenting a larger inclination. However, this design will result in a fixed distance between the fracture part 13 and the head part 11, and when the thickness of the workpiece 100 is insufficient, the fracture part 13 will protrude out of the collar 20 obviously and risk to work, as shown in fig. 2; on the contrary, if the thickness of the workpieces 100 exceeds the fracture neck groove 122 when they are stacked, the fracture part 13 will be excessively immersed in the collar 20 (not shown), so that the amount of the effective protrusion into the annular groove 121 after the collar 20 is deformed is insufficient, and the problem of poor biting force and affecting the engineering quality is caused.

As shown in fig. 5, in the case of the conventional ring groove rivet or the ring groove rivet having the broken neck groove, the inner wall of the collar 20 may not protrude into the depth of the ring groove 121, and the problem of insufficient engaging force may be caused to affect the quality of the work.

In view of the problems of the prior art, the inventor of the present invention has improved a ring groove rivet.

Disclosure of Invention

The invention mainly aims to provide a reducing ring groove rivet which can be used for various workpiece thicknesses.

To achieve the above object, the present invention provides a reducing ring groove rivet, at least comprising: the bolt nail is provided with a head part and a bolt body connected with the head part, wherein a plurality of ring groove groups are equidistantly arranged on the bolt body, each ring groove group comprises a first ring groove and a second ring groove adjacent to the first ring groove, the first ring groove is provided with a first groove bottom and a first groove peak adjacent to the first groove bottom, the second ring groove is provided with a second groove bottom and a second groove peak adjacent to the second groove bottom, the diameter of the second groove bottom is smaller than that of the first groove bottom, and any ring groove group in the plurality of ring groove groups can be used as a fracture part during breaking operation. The structure that the diameter of the second groove bottom is smaller than that of the first groove bottom is mainly utilized, a plurality of possible structural weak points are formed on the bolt body, and any ring groove group in the plurality of ring groove groups can be selected as a fracture part during the breaking operation.

In practice, the diameter of the second trough peak is smaller than the diameter of the first trough peak.

When the special-diameter ring groove rivet is implemented, the special-diameter ring groove rivet further comprises a lantern ring, the lantern ring is provided with a through hole for sleeving the bolt body, the hardness of the lantern ring is smaller than that of the bolt nail, the lantern ring is provided with an occlusion area, and the occlusion area is deformed and then protrudes into each adjacent ring groove group at the position of the occlusion area to be occluded into the bolt body.

In practice, the pegs and collars are made of austenitic stainless steel.

When implementing, the interlock district is equipped with a depressed part, and the depressed part setting is cyclic annular at the outer wall of the lantern ring, and the depressed part can reduce the anti deformability of the lantern ring, can more bulge into the dark department of annular when letting the interlock district deform, and present better interlock effect.

When in implementation, the occlusion area is provided with a plurality of depressed parts, the plurality of depressed parts are annularly arranged on the inner wall of the lantern ring, the depressed parts can reduce the deformation resistance of the lantern ring, the occlusion area can be more protruded into the deep part of the annular groove when being deformed, and a better occlusion effect is achieved.

Compared with the prior art, the reducing ring groove rivet provided by the technical means of the invention can select one of the ring groove groups as the fracture part during the snapping operation, is suitable for various workpiece thicknesses, effectively limits the generation range of the fracture part, does not cause the problem that the fracture part is excessively protruded or sunk, and does not need to be provided with the neck breaking groove as in the background technology. And secondly, a concave part is further arranged in the occlusion area of the lantern ring, so that the occlusion area has a better occlusion effect, and the using effect of the reducing ring groove rivet is improved. In addition, when the stud and collar are made of austenitic stainless steel, the stainless steel material is a ductile material that provides better structural strength but is relatively less likely to break, and the breaking operation can be ensured to be performed smoothly and accurately by the technical means of the present invention.

Drawings

Fig. 1 is a schematic view illustrating a conventional ring groove rivet.

Fig. 2 is a schematic view showing a conventional ring groove rivet in a broken state.

FIG. 3 is a schematic view of a prior art ring groove rivet having a breakneck groove.

FIG. 4 is a schematic drawing showing a conventional snap-off ring groove rivet having a breakneck groove.

FIG. 5 is a schematic view showing the snap-fit attachment of a conventional ring groove rivet.

Fig. 6 is an exploded perspective view of a first embodiment of the present invention.

Fig. 7 is an enlarged cross-sectional view of a peg according to a first embodiment of the invention.

Figure 8 shows a cross-sectional view of a collar according to a first embodiment of the invention.

Fig. 9 is a schematic view showing a snap-off state of the first example of the present invention.

Fig. 10 is a schematic view showing a first example of the present invention applied to a workpiece of different thickness in use.

Fig. 11 is an enlarged cross-sectional view of a peg according to a second embodiment of the invention.

Fig. 12 is a perspective view of a collar according to a third embodiment of the present invention.

Figure 13 shows a cross-sectional view of a collar according to a third embodiment of the invention.

Fig. 14 is a perspective view of a collar according to a fourth embodiment of the present invention.

Figure 15 shows a cross-sectional view of a collar according to a fourth embodiment of the present invention.

Description of reference numerals: 10-studs; 11-a head; 12-the plug body; 121-ring groove; 122-neck breaking groove; 123-nail tail; 20-a collar; 100-a workpiece; 200-a tool; 30-a stud; 31-a head; 32-a plug body; 33-ring groove group; 34-a first ring groove; 341-first tank bottom; 342-first trough peak; 35-a second ring groove; 351-second groove bottom; 352-second trough peak; 36-a fracture; 40-a collar; 41-perforating; 411-chamfered part; 412-a reamer part; 42-bite zone; 421-a recess; 421 a-recess; 421 b-recess; h 1-diameter; h 2-diameter; h 3-diameter; h 4-diameter.

Detailed Description

Referring to fig. 6 to 9, the reducing ring groove rivet according to the first embodiment of the present invention includes a pin 30 and a ring 40, and the pin 30 and the ring 40 are made of austenitic stainless steel.

The peg 30 has a head 31, a peg body 32 attached to the head. A plurality of annular groove groups 33 are equidistantly arranged on the bolt body 32, each annular groove group 33 comprises a first annular groove 34 and a second annular groove 35 adjacent to the first annular groove, the first annular groove 34 is provided with a first groove bottom 341 and a first groove peak 342 adjacent to the first groove bottom 341, the second annular groove 35 is provided with a second groove bottom 351 and a second groove peak 352 adjacent to the second groove bottom 351, the diameter h1 of the second groove bottom 351 is smaller than the diameter h2 of the first groove bottom 341, any annular groove group 33 in the plurality of annular groove groups 33 forms a structural strong point and a structural weak point, the whole bolt body 32 forms a spaced arrangement between the structural strong point and the structural weak point, and each spaced structural weak point can be used as a fracture part 36 during the breaking operation; the diameters h1 and h2 may be size differences that can be recognized by the ordinary naked eye, or size differences that cannot be observed by the naked eye, such as 0.3mm to 0.03mm, and the above size difference values are only for illustration and are not intended to limit the present invention.

The collar 40 is provided with a through hole 41 to be sleeved on the bolt 32, the hardness of the collar 40 is less than that of the bolt 30 and has an engagement area 42, when the collar 40 is sleeved on the bolt 32 after the bolt 32 passes through a plurality of workpieces 100, and the engagement area 42 is deformed and then protrudes into each adjacent annular groove group 33 to be engaged with the bolt 32. The engaging region 42 is provided with a recessed portion 421, and the recessed portion 421 can reduce the deformation resistance of the collar, so that the engaging region 42 can protrude into the depth of the ring groove 33 when deformed, thereby providing a better engaging effect. The recess 421 shown in this embodiment is disposed on the outer wall of the collar 40, and the recess 421 is ring-shaped. The two ends of the through hole 41 are respectively provided with a chamfer portion 411 and a hole-expanding portion 412, when the operation is implemented, the larger chamfer portion 411 can make the sheathing operation of the lantern ring 40 smoother, and the hole-expanding portion 412 can make the position of the fracture portion 36 easier to be formed in the through hole 41.

Referring to fig. 10, since one of the ring groove sets 33 can be selected as the breaking portion 36 during the stretch breaking operation, it can be applied to different workpiece thicknesses, and the distance between the head 31 and the breaking portion 36 is different for different workpiece thicknesses, so as not to cause the problem that the breaking portion 36 protrudes too much or falls into the ring 40.

Referring to fig. 11, the second embodiment of the present invention is different from the first embodiment in that the diameter h3 of the second groove peak 352 is smaller than the diameter h4 of the first groove peak 342, so that any one of the plurality of ring groove sets 33 forms a strong point and a weak point, and the bolt body 32 forms a spaced arrangement of the strong point and the weak point, and each spaced arrangement of the weak points can be used as a fracture part 36 during the breaking operation. The diameters h3 and h4 may be size differences that can be recognized by the ordinary naked eye, or size differences that cannot be observed by the naked eye, such as 0.3mm to 0.03mm, and the above size difference values are only for illustration and are not intended to limit the present invention.

Referring to fig. 12 and 13, a structure of a collar 40 according to a third embodiment of the present invention is disclosed, in which a plurality of concave portions 421a are disposed on an inner wall of the collar 40, such that a cross section of the through hole 41 is radial rather than circular, and the arrangement of the plurality of concave portions 421a reduces a deformation resistance of the collar 40.

Referring to fig. 14 and 15, a structure of a collar 40 according to a fourth embodiment of the present invention is disclosed, in which a plurality of recessed portions 421b are disposed on an inner wall of the collar 40, such that a cross section of the through hole 41 is polygonal, rather than circular, and the configuration of the plurality of recessed portions 421b reduces a deformation resistance of the collar 40.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A reducing ring groove rivet is characterized by at least comprising: the bolt has a head and a bolt body connected to the head, several ring groove sets are set equidistantly on the bolt body, each ring groove set includes one first ring groove and one second ring groove adjacent to the first ring groove, the first ring groove has one first groove bottom and one first groove peak adjacent to the first groove bottom, the second ring groove has one second groove bottom and one second groove peak adjacent to the second groove bottom, and the diameter of the second groove bottom is smaller than that of the first groove bottom, so that any one of the ring groove sets may be selected as the breaking part for breaking operation.

2. A reducing ring groove rivet according to claim 1, wherein: the sleeve ring is provided with a through hole to be sleeved on the bolt body, the hardness of the sleeve ring is smaller than that of the bolt nail, the sleeve ring is provided with an occlusion area, and the occlusion area is deformed and then protrudes into each adjacent ring groove group at the position to be occluded on the bolt body.

3. A reducing ring groove rivet according to claim 2, wherein: the occlusion area is provided with a depressed part which is arranged on the outer wall of the lantern ring and is annular.

4. A reducing ring groove rivet according to claim 2, wherein: the engaging area is provided with a plurality of concave parts, and the plurality of concave parts are arranged on the inner wall of the lantern ring.

5. A reducing ring groove rivet according to claim 2, wherein: the stud and the collar are made of austenitic stainless steel.

6. A reducing ring groove rivet according to claim 1, wherein: the second trough peak has a diameter less than the diameter of the first trough peak.

7. The reducing ring groove rivet of claim 6, wherein: the sleeve ring is provided with a through hole for sleeving the bolt body, the hardness of the sleeve ring is less than that of the bolt nail, the sleeve ring is provided with an occlusion area, and the occlusion area is deformed and then protrudes into each adjacent ring groove group to be occluded in the bolt body.

8. A reducing ring groove rivet according to claim 7, wherein: the occlusion area is provided with a depressed part which is arranged on the outer wall of the lantern ring and is annular.

9. A reducing ring groove rivet according to claim 7, wherein: the engaging area is provided with a plurality of concave parts, and the plurality of concave parts are arranged on the inner wall of the lantern ring.

10. A reducing ring groove rivet according to claim 7, wherein: the stud and the collar are made of austenitic stainless steel.