JPS61236912A - Rivet - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to a rivet, and more particularly to a rivet for connecting and fixing a plurality of materials such as plates and bars.

(Prior Art) Generally, a plurality of metal plates or the like are stacked and fixed together by caulking rivets inserted through holes in the metal plates. As shown in Fig. 19, this caulking work involves protruding the tip of the caulking stud C inserted through the caulking hole B of the lower metal plate M etc. from the lower metal plate M, etc., and then tightening this protruding portion P. The metal plates M, etc. are fixed to each other by being crushed by hand hammering, machine hammering, etc.

However, after passing the rivet rivet C through the crimping hole of the metal plate M, it is a cumbersome work to crush the tip, and furthermore, when hammering by hand, the surface of the metal plate M etc. may be damaged, and the product may be damaged. It may damage the appearance.

Further, the metal plates M and the like may be fixed to each other by a method such as spot welding, but this method requires a welding machine, leading to an increase in total cost.

As a solution to the above problems,
There is a stud disclosed in No. 079. This stud is shown in Figure 20 (a
), the pedestal 3 protrudes below the male rivet head 31.
2 into the hollow cylindrical body 34 of the female rivet head 33,
The tip opening edge 35 of the hollow cylindrical body 34 is pushed into the diagonal groove 36 on the outer peripheral surface of the base of the pedestal 32 and locked therein, thereby fixing the thumbtacks to each other.

However, with the above stud, as shown in Fig. 20(b),
When a male stud and a female stud are assembled, the distance between the two heads 1.4 is always constant. Therefore, when the thickness of the plurality of plate materials etc. held by thumbtacks is smaller than the distance between the two heads wt and the head 1.4, the plates are not fixed to each other, and the thickness of the plate materials etc. is smaller than the distance between the two heads wt and the head 1.4. If the distance is larger than 4, the tip opening edge 35 of the female tack will not reach the diagonal groove 36 of the male tack, and the tack cannot be assembled. Therefore, depending on the thickness of the plate material, etc.
It is necessary to use male plates and male studs having pedestals 32 and hollow cylinders 34 of different lengths, and it is complicated to manufacture and manage these different male plates and male studs.

Further, the riveting device disclosed in Japanese Utility Model Application No. 56-82308 consists of a pin 37 and a deep-dish type socket 38, as shown in FIG. When the pin 37 is press-fitted into the hollow cylinder 39 that protrudes into the hollow cylinder 39, the pin 37 and the socket fit together because the unevenness 40 and 41 formed on the inner circumferential surface of the cylinder 39 and the outer circumferential surface of the pin 37 engage with each other. 38 are fixed to each other.

Although this riveting tool can accommodate changes in the thickness of the plate material, etc. by adjusting the amount of insertion of the pin 37 into the cylinder 39 of the socket 38, as shown in FIG. 21(b), If the socket 38 is too thin, the tip of the pin 37 will protrude from the bottom surface of the socket 38. Therefore, the problem arises that the appearance of the tacked product is significantly impaired and the commercial value is reduced.

(Problems to be Solved by the Invention) As mentioned above, this invention makes the installation work complicated.
The equipment required for installation is large-scale, which increases the total cost, and manufacturing and management are complicated because the size varies depending on the thickness of the material.Furthermore, it may damage the surface of the material or protrude from the surface, resulting in the appearance of the product being affected. The aim is to solve the problem of product damage and lower product value, and its purpose is to make installation easier, maintain the excellent appearance of the product, and make it easier to manufacture and manage. Furthermore, it is an object of the present invention to provide a rivet that does not require any special equipment for fixing materials together, and can therefore reduce the total cost.

Structure of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention, as shown in FIG. The part 2.2a constitutes a pair of stud members R%Ra, and as shown in FIG.
When assembled together, these mounting portions 2.2a are engaged with each other due to the uneven relationship.

(Function) As a result of adopting the above-mentioned means, the present invention has a mounting portion 2.2 of the two stud members R and Ra that are manually assembled to each other.
a are engaged with each other by a necessary amount depending on the thickness of the material 8, and therefore both the rivet members R%Ra firmly clamp the material 8 in a state where they cannot be separated.

, J Examples) Hereinafter, a first example of the present invention will be described in detail with reference to FIGS. 1 to 3.

FIG. 1 shows a pair of stud members R and Ra. Note that these stud members R5Ra have exactly the same configuration, so only one stud member R will be explained, and the other stud member Ra will simply be indicated by the same reference numeral with the letter a added in the drawings. .

In the reference numerals, 1 is the head of the stud member R, which is formed into a disk shape. Reference numeral 2 denotes a mounting part that protrudes inward from the inner surface of the head 1, and includes a holding part 3 in the shape of a disk with a relatively small diameter at its base end, and a holding part 3 that projects inward from the holding part 3. It is composed of a pair of insertion portions 4. As shown in FIG. 3, each of the pair of insertion portions 4 has a substantially semicircular cross section, and is symmetrical with respect to each other.

As shown in FIGS. 1 and 2, reference numeral 5 denotes two guide surfaces formed on the outer circumferential surfaces of mutually opposing distal ends of a pair of insertion sections 4, which are inclined so as to become thinner toward the distal ends. . Reference numeral 6 denotes a pair of joint surfaces formed by the same ratio of two mutually orthogonal inner surfaces of each insertion portion 4, and a locking portion 7 having a large number of fine irregularities along the entire length direction of each joint surface 5. is engraved.

Further, in FIG. 2, reference numeral 8 denotes three metal plates, each of which has a fitting hole 9 formed therethrough. 10 is a head fitting recess formed shallowly in one surface portion of the metal plate 8 of this fitting hole 9, and 11 is a fitting hole extending from the head fitting recess 10 through the entire metal plate 8. be. These metal plates 8 are inserted into the respective head fitting recesses 1o.
are arranged so that they are located on opposite sides, and are overlapped so that the respective fitting holes 11 are aligned with each other.

Note that the head fitting recess 1o of the metal plate 8 is provided with the stud members R, R.
The head portion 1.1a of the stud a is formed in a size that fits snugly, and the inner diameter of the fitting hole 11 is equal to the diameter of the circle formed by combining the insertion portions 4.4a of the two stud members R and Ra. They are sized to match.

Now, a method for attaching the studs configured as described above to the metal plate 8 will be explained below.

As shown in FIG. 2, the insertion portions 4.4a of the stud members R and Ra are inserted into the fitting holes 9 of the pair of superimposed metal plates 8 from above and below, respectively. Then, the insertion portions 4.4a of both stud members R%Ra are inserted into the head fitting recesses 1o of the fitting holes 9, respectively.
, and reaches the inside of the fitting hole 11.

As mentioned above, since the diameter of the circle formed by the insertion portions 4.4a of both stud members R and Ra matches the inner diameter of the fitting hole 11 of the metal plate 8, these insertion portions 4.4a The distal end portion is smoothly inserted into the fitting hole 11 from the guide surface 5.5a. Then, as the heads 1.1a of both stud members RSRa are strongly pressed from both the upper and lower directions, both stud members R
SRa is tightly fixed within the fitting hole 11 of the metal plate 8.

In this embodiment, the insertion portions 4. of both stud members Rs Ra.
4a into the fitting hole 11 of the metal plate 8,
There is no need to consider the relative positional relationship of the reinsertion part 4.4a in advance. That is, both stud members R1Ra are connected to the metal plate 8.
When pressed inward from both the upper and lower directions of the fitting hole 9, the tapered guide surfaces 5.5a formed on the end surfaces of the insertion portions 4.4a of both stud members RSRa guide each other, so that the reinsertion is not possible. Contact of the joint surfaces 6.6a of the portions 4.4a begins. If both stud members Rs Ra are pressed inward in the metal plate 8 in this state, the insertion portions 4.4a of both stud members R1Ra will be completely assembled and tightly fit within the fitting hole 11, as shown in FIG. It is designed to be maintained.

In this case, when the insertion portions 4.4a of both stud members RSRa are assembled together in the fitting hole 11 of the metal plate 8, each head 1, 1a is inserted into the fitting hole 9 of the metal plate 8. It is fitted into the head fitting recess 1o and held flush with the metal plate 8.

The installation is carried out in the tube 12 by inserting both stud members R%Ra into the insertion portions 4.
When 4a are assembled together, the mating surfaces 6.6a of the reinsertion parts 4.4a come into contact with each other. Therefore, the locking portions 7.7a formed on the respective joint surfaces 6.6a engage with each other, and both stud members RsRa are firmly held within the fitting holes 11 of the metal plate 8. As a result, both stud members R% R
a do not separate from the fitting holes 9 of the overlapping metal plates 8 in the vertical direction.

Therefore, the plurality of metal plates 8 are firmly fixed by both stud members R%Ra.

In the above-mentioned rivet, both rivet members Rs Ra have the same shape, so it is only necessary to manufacture the rivet member R (Ra) of one shape. Therefore, unlike conventional products such as eyelets and rivets, manufacturing is easy. At the same time, the manufacturing process is shortened.

Furthermore, with the rivet of the present invention, there is no need to store the rivet members Rs Ra having different shapes in pairs, so the management of the rivets is not complicated.

Furthermore, since no caulking work is required, installation is easy and does not damage the surface of the metal plate 8 at times.

In addition, both stud members R% Ra can be attached to the metal plate 8 manually by using a jig, etc., so large-scale equipment is not required, and the total installation cost is kept low. be able to.

In addition, since the amount of engagement of the insertion portions 4.4a of both stud members R1Ra changes depending on the thickness of the metal plate 8, the metal plate 8
Only the head 1.1a is exposed as a plane from the surface of
The appearance of the product is not impaired.

In addition, since a guide surface 5.5a is formed at the tip of the insertion portion 4.4a of both the stud members R and Ra, when both the stud members R and Ra are press-fitted into the fitting hole 11 of the metal plate 8, the guide surface 5.5a is re-inserted. Part 4.4a
The re-insertion part 4.4a is not prevented from entering due to the friction generated between the outer circumferential surface of the fitting hole 11 and the inner circumferential wall of the fitting hole 11, and is smoothly press-fitted.

FIGS. 4(a) to 4(f) show separate versions of the first embodiment. To explain these in order, both stud members R, Ra
The cross-sectional shape of the insertion portion 4.4a is a perfect quarter circle shape [fourth
Figure (a)), semicircular shape [Figure 4 (b)), semicircular shape forming a side crank shape [Figure 4 (c)), semicircular shape forming a comb-like shape [Figure 4] (d)), magatama-like [Fig. 4 (
a)) It is shaped like a deformed magatama [Fig. 4(f)].

Next, FIGS. 5(a) and 5(b) show a second embodiment of the present invention.

In this embodiment, the corners of a pair of mounting parts 2 having a quarter-circular cross section formed on one chain member R are cut out to form a clamping part 13.
At the same time, the corner portions of the pair of mounting portions 2a of the other chain member Ra are connected to form a support portion 13a. Then, uneven locking portions 7.7a are carved on the surfaces of the holding portion 13 and the support portion 13a, and when the mounting portions 2.2a of both stud members R and Ra are combined with each other, the contact surface 6.6
In addition to the locking part 7.7a of a, the clamping part 13 and the support part 1
3a and the locking portion 7.7a are configured to mesh with each other.

With this configuration, the state of connection between both stud members R%Ra within the fitting hole 11 becomes stronger.

Next, a third embodiment of this invention is shown in FIGS. 6(a) and (b).
Describe according to the following.

In this embodiment, as shown in FIG. 6(a), the mounting portion 2 of one chain member R is formed into a cylindrical shape.
As shown in b), when mounting the U-shaped cross section, a groove 15 is cut out in the entire length direction of the mounting part 2, and the mounting part 2a of the other chain member Ra is mounted in a manner corresponding to the groove 15. This is the shape of the engaging portion 15a.

Therefore, when both stud members Rs Ra are assembled in the fitting hole 11 that is fitted into the fitting hole 9 of the metal plate 8, one chain member R is installed by pressing the other chain member Ra into the groove 15. Afterwards, locking portions 7.7a are formed on the peripheral wall of one chain member R and on the surface of the engaging portion 15a of the other chain member Ra, respectively.
are engaged with each other, and both stud members R and Ra are firmly attached to each other.

Even with this configuration, there is no difference in effect from the first and second embodiments.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. 7(a) and 7(b).

In this embodiment, the attachment part 2 of one chain member R is formed into a cross-shaped cross section to serve as the insertion part 20, and the attachment part 2a of the other chain member Ra is formed with four semicircular holding pieces H. The holding pieces H are configured to be spaced apart, and a cross-shaped space formed between these holding pieces H is used as an engaging part 20a. With this configuration, when both the stud members R and Ra are inserted from above and below into the fitting holes 11 of the plurality of metal plates 8, one chain member R is attached to the engaging portion 20a of the other chain member Ra.
The engaging portions 20 of are press-fitted, and the locking portions 7.7a of the mounting portions 2.2a of both stud members RsRa are engaged with each other.

Therefore, both stud members Rs Ra are irremovably attached to each other within the fitting hole 11 of the metal plate 8, and the metal plates 8 are securely fixed to each other.

Further, FIGS. 8(a) and 8(b) show a fifth embodiment of the present invention.

In this embodiment, as shown in FIG. 8(b), the attachment part 2 of one chain member R is formed into a plate-shaped insertion part 21, and the attachment part 2a of the other chain member Ra is formed into a cylindrical shape. Furthermore, the engaging portion 2 of the one chain member R is attached to the cylindrical mounting portion 2a.
1 is inserted into which a hole 21a is formed.

Even with this configuration, when the attachment parts 2 of both stud members R are combined with each other in the fitting holes 11 attached to the plurality of metal plates 8, the entire outer surface of the insertion part 21 of one mirror member R and When attaching the other mirror member Ra, the locking portions 7.7a carved on the entire inner circumferential wall of the hole 21a engage with each other, so that both the stud members RsRa are held irremovably, and the plurality of metal plates 8 are Connected securely.

FIG. 9 shows a sixth embodiment of the invention. In this embodiment, the mounting part 2 of one mirror member R is a small diameter cylindrical insertion part 22, and an abacus spherical retaining part 23 is provided at the tip thereof, and the mounting part 2 of the other mirror member Ra is
A is formed into a large-diameter cylindrical shape, and a hole 22a is recessed therein for mounting. In addition, in this installation, the insertion part 22 is inserted into the hole 22a, and a receiving hole 23a into which the retaining part 23 is fitted is formed at the back of the hole 22a.

In this configuration, since the retaining portion 22 of one mirror member R is retained in the receiving hole 23a of the other mirror member Ra, the effect of preventing both stud members R and Ra from coming off from each other is even more remarkable. Become something.

Next, the seventh embodiment of the present invention is shown in FIGS. 10(a) and (
Explain according to b).

In this embodiment, mounting portions 2.2a are provided protruding from a pair of metal plates 8, and the metal plates 8 are used as the head 1.1a of a mirror member R%Ra. That is, as shown in FIG. 10(a),
A locking part 7 is engraved on the entire outer surface of the engaging part 24 as the mounting part 2 which is protruded from the inner surface of one metal plate 8, and a locking part 7 is carved on the entire outer surface of the insertion part 24 which is protruded from the inner surface of the other metal plate 8. In this case, the attachment part 24 of one mirror member R is inserted into the hole 2.
4a is recessed, and a locking portion 7a is also carved in the hole 24a.

Therefore, the engaging portion 24 of one metal plate 8 is connected to the other metal plate 8.
When the metal plates 8 and 8 are fitted into the hole 24a, the locking portions 7 and 7a engage with each other, and both metal plates 8 are firmly attached and will not come off in a natural state.

FIG. 10(b) shows another example of the seventh embodiment.

That is, on the inner surface of one metal plate 8, three cylindrical engaging parts 24 as mounting parts 2 are provided, and furthermore, three mounting parts 2a are provided protruding from the other metal plate 8. , each mounting part 2
The hole 24a is recessed for attachment to the hole 24a. In this other example as well, a locking portion 7.7a is carved on the entire surface of the engaging portion 24 of one mirror member R and the entire inner circumferential surface of the hole 24a to attach the other mirror member Ra. The entry portion 24 is mounted and firmly held within the hole 24a.

If configured as above, each metal plate 8 and mirror member R% R
Since it can be formed integrally with a, the manufacturing process can be simplified and manufacturing costs can also be reduced.

Both stud members RSRa in the above-mentioned embodiments are made of a metal material,
It can be formed using flexible materials such as synthetic resin materials and wood, as well as combinations of these materials.

Note that the present invention is not limited to the above-described embodiments; for example, as shown in FIG. 11(a), a metal, synthetic resin, etc. For installation made of pipe material, the pipe 12 is fitted inside the mounting portion 2.2 of both stud members R1Ra.
1) to prevent cracks from forming on the peripheral edge of the fitting hole 11 when the fitting hole 11 is fitted; A locking portion 7.7a is also carved on the surface, and both stud members R and Ra are attached to the fitting hole 11 of the metal plate 8 or attached to the pipe 12 to further prevent separation from the pipe 12. As shown in (a) and (b), both stud members R5
The mounting portions 2.2a of the Ra are each formed into a cylindrical shape so that the whole of one mirror member R can be fitted into the other mirror member Ra, and in particular, as shown in FIG. 12(c), the manufacturing of scissors At this time, a pair of scissor pieces S are attached by both stud members R1Ra.
These rivets give the scissors a decorative effect by giving them an eyelet-like appearance. (When connecting the scissor pieces S in this way, as described in It is desirable that the scissors piece S be fitted into the fitting hole 11 to facilitate rotation of the scissor piece S. A locking projection A or a locking recess is formed on the inner surface of the head 1, and a corresponding recess or projection is also provided on the scissor piece S.
By fitting the locking protrusion A (locking recess) with the recess (protrusion) of the scissor piece S on the component R side, this scissor piece S is held in an unrotatable state, and another scissor piece A configuration is adopted in which only S is rotated to reliably prevent the rivet from coming off from the scissors.
Planar shape of head 1.1a of Ra and FIG. 14(a)
As shown in ~(f), the front shape of the head of each member R1Ra can be arbitrarily formed to give a change in appearance; ■By lengthening the attachment part 2.2a of both rivet members Rs Ra, it can be used to fix bar shapes such as kitchen utensils such as kitchen knives and handles of eating and drinking utensils. (2) As shown in FIG. 15, when the shape of both stud members 1.1a is elaborated and the member 1.1a is attached to the metal plate 8, the head 1. Arbitrary changes may be made without charge as long as they do not depart from the spirit of the invention, such as making 1a exhibit a decorative effect or displaying designs, marks, trademarks, etc. on the surface of head 1.1a.

Effects of the Invention As detailed above, in the present invention, a head and a mounting portion 2.2a protruding from the head constitute a pair of members RSRa, and when both stud members R and Ra are assembled together, These attachment parts 2.2a engage with each other due to the uneven relationship, which makes the installation process easy, maintains the good appearance of the product, and also provides special features for fixing the materials together. This has an excellent effect in that it does not require any special equipment, and therefore the total cost can be kept low.

Separately, the components R shown in FIGS. 16 to 18 are not directly related to this invention, but are based on a technical idea similar to this invention.

That is, in the studs shown in FIGS. 16(a) to 16(d), the mounting portion 2 of one member R is formed in the shape of a closed cylinder, and four slits 25 extending from the bottom to the top are provided, Four pressing pieces 26 are formed between these slits 25. As shown in FIG. 16(d), two upper and lower retaining protrusions 27 are formed on the lower ends of these pressing pieces 26, and furthermore, on the inner circumferential surface of the base end of the mounting portion 2, Similarly, two upper and lower fitting grooves 28 are formed.

The attachment part 2a of the other member Ra is formed in a cylindrical shape with a slightly smaller diameter at the top, and furthermore, at its upper end,
Two upper and lower engagement protrusions 27a are formed to be engaged with the fitting grooves 28 of one component R when both stud members RsRa are combined.

In addition, a retaining groove 29 is formed on the inner circumferential wall of the pair of metal plates 8, which is slightly deeper than the entrance of the fitting hole 9 of the other member Ra side. When it is fitted into the fitting hole 9 of one component R, the four pressing pieces 26 of one component R spread outward and are press-locked to the inner wall of the fitting hole 11, and furthermore, the four pressing pieces 26 of one component R 4 upper retaining protrusions 2
6 comes into contact with the lower surface of the central metal plate M, and the lower retaining protrusion 26 is inserted into the holding groove 29. Therefore, the pair of metal plates 8 are both stud members R, Ra.
Because they are firmly connected and held together, they do not separate from each other in their natural state. The retaining protrusions 26 are formed in two stages, upper and lower, but the more stages there are, the more varied the length adjustment of the studs will be in accordance with the thickness of the metal plate M.

In addition, in FIGS. 17(a) to 17(d), the attachment part 2 of one component R is formed into a closed cylindrical shape, and four slits 25 extending from the bottom to the top are provided, and these slits 25 Four pressing pieces 26 are formed between them. Further, the mounting portion 2a of the other stud member Ra is formed in a cylindrical shape with a slightly smaller diameter at the upper side, and this
The attachment part 2 of the is adapted to be fitted onto the outside. Therefore, when both stud members R and Ra are fitted into the fitting holes 9 of both metal plates 8, the four pressing pieces 26 of one mirror member R spread outward and touch the inner wall of the fitting hole 11. The pair of metal plates 8 are firmly connected and held by both stud members R%Ra.

In addition, in FIGS. 18(a) to 18(c), one mirror member R is formed with a cylindrical mounting part 2 having a slightly smaller diameter at the top, and a large diameter disc is attached to the tip of this mounting part 2. An enlarged diameter part 30 having a shape is integrally provided, and four pressing pieces 26 are made to protrude downward on the circumference of a concentric circle larger than the mounting part 2. Further, the other mirror member Ra has four second pressing pieces 26a that protrude downward on the same circumference.
has been established. As shown in FIG. 18(a), the second pressing pieces 26a of the other mirror member Ra are equally spaced on a circumference having approximately the same diameter as the mounting portion 2 of the one mirror member R. It is located.

As shown in FIG. 18(c), when the mounting portions 2.2a of both stud members RSRa are inserted into the fitting holes 9 of the pair of metal plates 8, the enlarged diameter portion 30 of one mirror member R The second pressing piece 26a of the mirror member Ra is expanded, and the tip of the expanded second pressing piece 26a presses the inner wall of the pressing piece 26 of one mirror member R outward to spread them.

As a result, the tip of the pressing piece 26 of one mirror member R engages and contacts the inner circumferential wall of the fitting hole 11 of the metal plate 8. Therefore, both stud members R%Ra are attached to the two metal plates 8 in a manner that they cannot be removed, and both metal plates 8 are also held in a state where they cannot be removed.

[Brief explanation of the drawing]

Fig. 1 is a partially broken exploded enlarged perspective view showing a first embodiment of the present invention, and Fig. 2 is a partially cut away exploded perspective view showing a method of attaching the rivet shown in Fig. 1 to a metal plate, with a part cut away. The front view and FIG. 3 are the same (cross-sectional views showing the state in which the studs shown in FIG. 1 are attached to a metal plate, and FIGS. 4 (a) to (r) are cross-sectional views showing other examples of the first embodiment, respectively. 5(a) is an exploded enlarged perspective view showing the second embodiment, and FIG. 5(b) is a cross section showing the state in which the studs shown in FIG. 5(a) are assembled in the fitting hole. Figure, 6th
FIG. 6(a) is an exploded enlarged perspective view showing the third embodiment, FIG. 6(b) is a sectional view showing the state in which the studs shown in FIG. 6(a) are assembled in the fitting hole, and FIG. FIG. 7(a) is an exploded enlarged perspective view showing the fourth embodiment, FIG. 7(b) is a sectional view showing the state in which the studs shown in FIG. Figure (a) is an exploded enlarged front view showing the fifth embodiment;
Figure (b) is a sectional view showing the state in which the studs shown in Figure 8 (a) are assembled in the fitting hole, Figure 9 is a partially cutaway front view showing the sixth embodiment, and Figure 10 ( a) An exploded enlarged perspective view showing the seventh embodiment, FIG. 10(b) is an exploded enlarged perspective view showing another example, and FIG. 11(a) shows a pipe installed in the fitting hole of the metal plate. Cross-sectional view showing the state in which the is attached, Fig. 11(b)
12(b) is a perspective view showing another example in which a locking portion is also carved on the surface of the mirror member, FIG. 12(a) is an exploded enlarged perspective view showing yet another modified example, and FIG. 12(a) is a cross-sectional view showing the state in which the studs shown in FIGS. 12(a) and (b) are attached to a metal plate, and FIG. , FIG. 12(d) is similar to FIG. 12(a)~
(c) is a partially broken exploded enlarged perspective view showing another example of the mirror member, FIGS. 13(a) to (h) are plan views showing other examples of the head of the mirror member, and FIG. a) to (f) are front views showing other examples of mirror members, FIG. 15 is an enlarged perspective view showing still another modification of the present invention, and FIGS. 16 to 18 are views similar to the present invention. 16(a) is a front view showing the first alternative example, and FIG. 16(b) is a mirror member shown in FIG. 16(a). Bottom view showing one of them, Fig. 16 (c
) is a plan view showing the other of the pair of mirror members shown in Fig. 16(a), and Fig. 16(d) shows the state in which the studs shown in Fig. 16(a) are attached to the metal plate. Cross-sectional view shown, No. 17
Figures (a) and (b) are a bottom view and a top view, respectively, showing the second alternative example, and Figure 17 (C) is Figure 17 (a) and (b).
18A and 18B are respectively a plan view and a bottom view of the third separate stud member, and FIGS.
The figure is a cross-sectional view showing the state in which the stud members shown in FIGS. 18(a) and (b) are attached to a metal plate, and
21 to 21 show the prior art related to this invention, of which FIG. 19 is a sectional view showing a general crimping technique, and FIG. 20(a) shows a rivet consisting of a male plate and a female rivet. 20(b) is a sectional view showing the state in which the stud shown in FIG. 20(a) is assembled, FIG. 21(a) is an exploded perspective view showing the rivet stopper, FIG. b) is a perspective view showing the assembled state of the rivet shown in FIG. 21(b). Head 1.1a, attachment part 2.2a, stud members R, Ra. Patent applicant Kawashima Kogyo Co., Ltd. Agent
Patent Attorney On 1) Hiroshi Nobuo Figure 3 Figure 4 (''> (b) (c) (d) (e) (f) Figure 8 (a) Figure 8 (b) Figure 9/R -〇 - Kurono, O Kuroho Figure 12 (a) Figure 12 (C) (a) (b) (c) (d) (e) (
b) (9) (h) Figure 14 (a) (b) (C) (d) (e)
(f) Figure 15 (a) (b) Ra (d) Figure 17 (b) (d) a Figure 18 (a) (b) (C)

Claims (1)

[Claims] 1. A pair of stud members (
R) (Ra), and when both the stud members (R) (Ra) are assembled to each other, the mounting portions (2) (2a) are engaged with each other due to the uneven relationship. . 2. The rivet according to claim 1, wherein both the rivet members (R) and (Ra) have the same shape. 3. Both stud members (R) (Ra) are each shaped like a quarter circle in cross section, and have a pair of attachment parts (2) (2) that are point symmetrical to each other.
A stud according to claim 1 or 2, characterized in that it has a). 4. According to either claim 1 or 2, wherein both the stud members (R) (Ra) each have a mounting portion (2) (2a) having a semicircular cross section. The studs mentioned. 5. Claim 1, characterized in that the heads (1) (1a) of both the stud members (R) (Ra) are formed into a disk shape.
The studs listed in section. 6. Both attachment parts (2) of one stud member (R) are each formed into a quarter-circle shape in cross section, and the corners are cut out to form a clamping part (13), and then the other stud member (Ra) is formed. Both mounting parts (2a) are each formed into a quarter-circle shape in cross section, and the corner parts are connected, a support part (13a) is formed in this connected part, and these stud members (R) (Ra) are assembled to each other. 2. The stud according to claim 1, wherein the clamping part (13) clamps the support part (13a) when the clamping part (13) clamps the support part (13a). 7. Both the mounting parts (2) and (2a) have a guide surface (5) on the outer circumferential surface of each distal end that is tapered toward the distal end.
(5a) The stud according to any one of claims 1 to 6, characterized in that it is provided with (5a). 8. A mounting groove (15) with a U-shaped cross section extending in the length direction is cut out in the mounting portion (2) of one stud member (R), and a mounting portion (2a) of the other stud member (Ra) is cut out. ) is formed in a shape corresponding to the mounting groove (15), and both stud members (R
) (Ra) are assembled together, the mounting groove (15
2. Stud according to claim 1, characterized in that the mounting part (2a) is press-fitted into the inside. 9. The attachment part (2) of one stud member (R) is formed to have a cross-shaped cross section, and the other stud member (Ra) has four holding pieces (H) each having a quarter-circular cross section arranged at a distance. When these rivet members (R) and (Ra) are assembled together, one of the rivet members (R) is inserted into the cross-shaped engagement portion (20a) formed in the space between the holding pieces (H). Mounting part (2)
The stud according to claim 1, wherein the stud is press-fitted. 10. The attachment portion (2) of one stud member (R) is formed into a substantially plate shape, and the attachment portion (2) of the other stud member (Ra) is formed into a substantially plate shape.
a) is formed into a columnar shape, and a mounting hole (21a) extending toward the head (1a) is formed in the end face of this mounting portion (2a), so that these stud members (R) (Ra) can be assembled with each other. The stud according to claim 1, characterized in that, when attached, the mounting portion (2) is inserted into the attachment hole (21a). 11. The rivet according to claim 1, characterized in that the heads (1) and (1a) of both the rivet members (R) and (Ra) are each formed from a plate material. 12. The stud according to any one of claims 1 to 11, characterized in that a design, mark, trademark, etc. is displayed on the surface of the heads (1), (1a). 13. Mounting part (2) (2a) of both stud members (R) (Ra)
The locking part (7) has fine irregularities on the surfaces that contact each other.
) is engraved in claim 1~
A stud according to any one of paragraphs 12 to 13.