JPH0316210B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a shoe stud installed in the sole of a golf shoe or other sports shoes, and more particularly to a method for manufacturing a shoe stud whose spike body is made of ceramic material.

Conventional technology In recent years, efforts have been made to reduce the weight of golf shoes,
In order to solve the drawbacks of conventional screw-in type shoe studs, such as loosening of the screw fitting part and falling off of the shoe studs due to this, the spike body is made of highly wear-resistant cemented carbide or ceramic material. A shoe rivet has been developed and put into practical use, in which the spike body is integrally implanted into the sole of the shoe via a receiving seat, eliminating the need for replacement. In particular, ceramic shoe tacks are rapidly gaining popularity because they are not only lighter than metal ones, but also have superior wear resistance.

9 to 13 show the manufacturing process of a conventional ceramic shoe rivet in which a ceramic spike body is connected to a receiving seat made of a metal material by a caulking structure.

The spike body 1 consists of a tapered spike part 2 and a flange part 3 connected to the base end thereof. The receiving seat 30 is made by processing a metal material such as aluminum or mild steel, and is connected to a bottomed cylindrical holding part 28 having a recess 25 that fits and holds the flange part 3 of the spike body 1, and the outer periphery of the holding part 28. It consists of a disc-shaped seat part 29. In addition, in the receiving seat 30 shown in FIG. 12, an insertion hole 27 is provided in the bottom wall 26 of the recess 25 for inserting the spike body 1 from the spike part 2 when the spike main body 1 is fitted and held in the recess 25. Also, although omitted in the drawing, the seat 2
9 is provided with a notch or a through hole to ensure integral connection with the shoe sole when the receiving seat 30 is embedded in the shoe sole.

Then, with the flange part 3 of the spike body 1 fitted and held in the holding part 28 of the receiving seat 30, the open end of the holding part 28 is caulked inward so that the flange part 3 is sandwiched from both sides of its surface. In this structure, the spike body 1 is coupled to the receiving seat 30.

Problems to be Solved by the Invention In a shoe stud having such a clinching structure, both the front and back surfaces of the flange portion 3 are held by the holding portion 28 of the receiving seat 30, but the outer peripheral portion of the flange portion 3 of the spike body 1 is held. 28, and for this reason, when a torsional torque is applied to the spike portion 2, the receiving seat 30
However, the spike body 1 easily spins idly and wobbles, and the adhesion between the spike body 1 and the receiving seat 30 is poor, resulting in a weak bonding force, which is a fatal drawback. Furthermore, if the adhesion between the spike body 1 and the receiving seat 30 is poor, rainwater or the like may enter through the gap and cause corrosion. Furthermore, the above-mentioned shoe rivets are made by cutting or casting the metal material, or by processing it in two steps of forging and cutting, before the caulking process.
A receiving seat 30 consisting of a bottomed holding part 28 having a recessed part 25 and a disc-shaped seat part 29 connected to the outer periphery of the holding part 28
There was also the problem that the manufacturing cost was high because it had to be manufactured.

The present invention was made with the aim of solving the problems of shoe rivets due to such a caulking structure.
To provide a method for manufacturing a shoe rivet in which the connection between a ceramic spike body and a metal receiving seat is strong and reliable, and the manufacturing cost is relatively low.

Means for Solving the Problems The method of the present invention adopted to achieve the above object is to form a bottomed cylindrical receiver having a recess into which the flange of the spike body is fitted and held by forging a metal material. a step of making a seat blank, and compressing and deforming the outer peripheral portion of the blank in the axial direction over the entire area while the spike body is fitted and held in the blank, and extruding the compressed flesh outward in the radial direction to form a disk shape. At the same time as forming the seat part, the inner peripheral part of the blank is compressively deformed inward in the axial and radial directions to form a holding part that holds and fixes the flange part, so that the holding part and the flange part are formed. The method is characterized in that it includes a step of integrally and tightly bonding the parts.

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings. 1 to 6 show the manufacturing process of shoe studs according to the method of the present invention.

The spike body 1 made of ceramics is composed of a tapered spike part 2 and a flange part 3 connected to the base end thereof, as in the conventional product.

Reference numeral 4 designates a receiving seat blank, which is formed by forging a metal material such as aluminum or mild steel into a bottomed cylindrical shape having a recess 5 into which the flange 3 of the spike body 1 is fitted and held. The wall 6 is provided with an opening 7 through which the spike portion 2 is inserted when the spike body 1 is fitted and held in the recess 5. Note that, as shown in FIGS. 7 and 8, when the spike body 1 is inserted from the flange portion 3 side and is fitted and held in the recess 5, the opening 7 does not need to be provided. Since the blank 4 is a simple cylindrical body with a bottom, the header,
It can be mass-produced at low cost by companies such as Natsuto Homa.

The spike body 1 is fitted and held in the recess 5 of the blank 4, and is positioned between the punch 11 and the die 12, as shown in FIG. punch 11
has a guide hole 13 for the spike part 2 in the center, and two presser forged parts 1 at different positions in the axial direction on the lower surface.
4, 15 are provided, and both presser forged parts 14,
An annular wall 1 is formed between 15. Dice 1
A molded recess 17 is provided on the upper surface of 2.

The punch 11 cooperates with the descending die 12 to perform the forging process, but first, the entire outer circumference of the blank 4 is compressed and deformed in the axial direction by the presser part 14, and the compressed meat is radially outward. At the same time that the blank 4 is extruded to form the disk-shaped seat 9, the free end portion of the blank 4 is compressed and pushed into the forming recess 17 of the die 12, and holds the bottom of the flange 3. When the punch 11 further descends, the third
As shown in the figure, the blank 4 is
The inner circumferential portion of the flange 3 is compressed and deformed in the axial direction over the entire area, and is also compressed and deformed radially inward by the annular wall 16, thereby forming a holding portion 8 that holds and fixes the flange portion 3. Through the above compression deformation process, the receiving seat 10 consisting of the holding part 8 and the seat part 9 connected to the outer periphery of the holding part 8 is formed, and at the same time, the spike body 1 and the receiving seat 10 are formed through the holding part 8. are combined. Moreover, the holding part 8 is attached to the flange part 3.
It completely adheres not only to both the front and back surfaces but also to the outer peripheral surface, and is integrally and closely connected to the flange portion 3.

After the above compression molding process is completed, as shown in FIGS. 5 and 6, the molded seat portion 9 is trimmed, and at the same time, in order to ensure that it is embedded in the sole of the shoe and to reduce its weight. Notch part 18
Then, the through holes 19 are processed to complete the shoe rivet.

The shoe studs made in this way are
The bonding force between 0 and the spike body 1 is very large,
As a result of the test, it was confirmed that when torsion torque was applied to the spike part 2, the strength was 5 to 10 times greater than that of the conventional caulked structure. In addition, since the adhesion between the holding part 8 and the flange part 3 was high, there was no corrosion caused by rainwater or the like entering between the joint contact surfaces of the two.

In addition, in the above embodiment, the flange portion 3 of the spike body 1 has a cross-sectional shape.
If the cross-sectional shape of the flange portion 3 is oval or other non-circular shape, the strength against screw torque is further increased, and the bonding force between the receiving seat 10 and the spike body 1 is further increased.

Effects of the Invention As described above, according to the present invention, the receiving seat 10 consisting of the holding part 8 and the seat part 9 connected to the outer periphery of the holding part 8 is molded in one step of compression molding, and at the same time, the holding part The flange portion 3 of the spike body 1 is held and fixed at 8 to obtain a shoe stud in which the spike body 1 and the receiving seat 10 are firmly and reliably connected. In particular, since the holding part 8 is completely and integrally connected not only to the front and back surfaces of the flange part 3 but also to the outer circumferential surface, the bonding force between the two is extremely large, and even after long-term use, there will be no spikes. There is no risk that the main body 1 will spin or wobble. In addition, since the adhesion between the holding part 8 and the flange part 3 is high, there is no inconvenience such as rainwater or the like entering between the joint contact surfaces and causing corrosion.

Moreover, the shapes of the punches and dies used in the compression molding process described above are simple, and it is possible to easily produce a large number of them with one processing machine. Coupled with the fact that it can be mass-produced at low cost using Natstohome, etc., it has the effect of significantly reducing manufacturing costs.

[Brief explanation of drawings]

1 to 3 are explanatory diagrams showing the manufacturing process of shoe studs according to the method of the present invention, and FIG. 4 is 4-- in FIG.
5 is a front view of the completed shoe stud, FIG. 6 is a plan view of the same, FIGS. 7 and 8 are longitudinal sectional front views of main parts showing another embodiment, and FIG. 9 is a sectional view taken along line 4. 1 to 13 are explanatory diagrams showing the manufacturing process according to the conventional method. 1...Spike body, 2...Spike part, 3...
...Flange part, 4 ... Seat blank, 5 ... Recessed part, 6 ... Bottom wall, 8 ... Holding part, 9 ... Seat part, 1
0... Receiving seat, 11... Punch, 12... Dice, 14, 15... Presser stepped portion, 16... Annular wall.

Claims (1)

[Scope of Claims] 1. A ceramic spike body having a flange portion at the base end, and a metal receiving seat having a disk-shaped seat portion connected to the outer periphery of a holding portion that connects the flange portion of the spike body. A method of manufacturing a shoe stud comprising the steps of: producing a bottomed cylindrical receiving seat blank having a recess into which a flange of the spike body is fitted and held by forging a metal material; While the spike body is fitted and held in the blank, the outer circumferential portion of the blank is compressed and deformed in the axial direction over almost the entire area, and the compressed meat is extruded radially outward to form a disk-shaped seat part. At the same time, the inner circumferential portion of the blank is compressed and deformed inward in the axial and radial directions to form a holding part that holds and fixes the flange part, so that the holding part and the flange part are integrally formed. A method for producing shoe rivets, comprising the step of tightly bonding them. 2. The method of manufacturing a shoe stud according to claim 1, wherein the receiving seat is made of aluminum. 3. The method for manufacturing shoe studs according to claim 1 or 2, wherein the spike body has a non-circular cross-sectional shape.