JP3318563B2 - Walnut ring - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a case ring of the type in which the entire outer surface of a core body is wrapped with a covering material such as cloth, which can be widely used as a decorative article or the like.

[0002]

2. Description of the Related Art A known walnut ring is shown in FIG.
As shown in FIG. 5, a core material 70 was coated with a coating material 71, and edges 72 and 73 of the coating material 71 were sandwiched by press-fitting a back side stopper 74.

[0003]

The case ring described in the above prior art has a fatal defect that the metal surface is exposed without covering the outer surface of the back side stopper 74, and such a metal surface is exposed. However, when the thin material is made aside from the thick one, it is difficult to secure the coating material, and there is a high possibility that it will loosen. Was.

[0004] It is an object of the present invention to provide a new case ring which can solve the above problems.

[0005]

In order to achieve the above object, the present invention provides a wrap ring having a ring-shaped outer core material having a circular cross-section in which both ends abut, and a radial center member. And the outer peripheral portion and the radial cut-in portion are inserted into the outer core material and sandwiched by the abutting end edges. And a core material that functions to enter the outer peripheral portion and the radially cut portion of the coating material into the outer core material and then remains in the outer core material. It is.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. First, an outer core material 3 is formed by folding an upper half of a short tube-shaped portion 1 inward and forming it into a semicircle to form a gutter-shaped portion 2 that opens the upper half downward. Get from the board. In addition, a metal wire such as brass or a plastic wire is bent into a circular shape to obtain a circular inner core material 4 having one portion cut off. In addition, a disk-shaped covering material made of a cloth or a leather, a synthetic resin sheet or the like lined with a backing to prevent the fibers from fraying and having an appropriate pattern (not shown) provided with a radial cut 5 in the center. Get 6. These outer core material 3, inner core material 4, covering material 6, one type of upper die 11 and three types of first, second, and third lower dies 12, 1
The manufacturing process is performed by the steps 3 and 14 to obtain the finished product 8.

The upper die 11 includes an outer tubular portion 21 and an intermediate tubular portion 2 fitted inside the outer tubular portion 21 so as to be slidable up and down.
2 and an inner cylindrical portion 23 which is slidably fitted inside the intermediate cylindrical portion 22 in an up-down direction. The outer cylindrical portion 21 and the intermediate cylindrical portion 22 are formed by a first pin 24 and a first elongated hole. 25, and the intermediate tubular portion 22 and the inner tubular portion 23 are connected by fitting the second pin 26 and the second elongated hole 27, respectively, and the upper wall 28 is attached to the upper end of the intermediate tubular portion 22. The lower wall 29 is provided at the lower end of the inner cylindrical portion 23, respectively.
A first coil spring 30 is sandwiched between the lower walls 28 and 29, and when the intermediate tubular portion 22 is pushed up by the first coil spring 30 and the inner tubular portion 23 is pushed down, the inner tubular portion is pressed. 23, an upper annular concave portion 31 surrounded by the inner peripheral surface of the outer cylindrical portion 21 and the lower end surface of the intermediate cylindrical portion 22. The lower end surface of the cylindrical portion 22 has an arcuate groove shape, and functions as the upper half mold portion 32.

The first lower mold 12 is provided with a covering material pushing portion 35 having a tubular shape on the upper surface of the seat portion 34, and is provided on the outer periphery of the covering material pushing portion 35 along the outer peripheral surface of the pushing portion 35. An annular member 36 is fitted so as to be slidable up and down.
6, an outward flange 37 is provided on the outer periphery of the upper end portion, and a second coil spring 38 is sandwiched between the flange 37 and the seat portion 34 to apply an upward restoring force to the annular member 36 and to push the covering material. By increasing the inner diameter of the upper end portion of the portion 35 and reducing the outer diameter thereof, a part of the outer core material 3 and a part of the coating material 6 are both inside and outside spaces 39 and 4 for escape.
0 is formed, and a projection 41 having an inner diameter equal to the outer diameter of the covering material 6 is provided on the upper surface of the outer peripheral edge of the flange 37, and the covering material 6 is loaded in an extended state on the upper surface of the annular member 36. The portion 42 is formed.

The second lower die 13 has an inner core material pushing portion 45 erected on the upper surface of the seat portion 44 and slides up and down on the outer periphery of the inner core material pushing portion 45 along the outer peripheral surface of the pushing portion 45. The annular member 46 is fitted so as to be movable, and the inner diameter hole 4
7 is cut into a tapered upper opening edge to form the outer core material 3
A folding portion 48 is formed to bend the tubular shape portion 1 obliquely inward, and an outward flange 49 is provided on the outer periphery of the upper end of the annular member 46.
The third coil spring 51 is interposed therebetween to apply an upward restoring force to the annular member 46, and when the annular member 46 is restored to the upper end, the upper end surface of the inner core material pushing portion 45 is inserted into the inner diameter hole. Is formed as a bottom wall to form a loading concave portion 52 of the inner core material 4.

The third lower mold 14 is provided on the upper surface of a seat 56 with a lower half molding cylindrical portion 55 having an arcuate groove shape and having a portion functioning as a lower half molding mold portion 54 on an upper end surface. ,
An annular member 57 is fitted around the outer periphery of the lower half-forming cylindrical portion 55 so as to be slidable up and down along the outer peripheral surface of the lower half-forming cylindrical portion 55. An outward flange 58 is provided and the flange 58 and the seat 5
6, the fourth coil spring 59 is sandwiched between them so as to apply an upward restoring force to the annular member 57, and when the annular member 46 is restored to the upper end, the upper end of the lower half-forming cylindrical portion 55 becomes The state is lower than the upper surface of the member 46.

Reference numerals 60 and 61 in the figure denote projections and recesses for positioning which are fitted to each other when the upper mold 11 is pressed down.

Next, using the upper mold 11 and the first, second, and third lower molds 12, 13, and 14, a manufacturing process of obtaining a finished product 8 using the outer core 3, the inner core 4, and the coating 6 is performed. Will be described. That is, first, the upper mold 11 is placed above the first lower mold 12.
(See FIG. 7). In this state, the outer core material 3 is mounted on the top edge of the coating material pushing portion 35, and the coating material 6 is loaded in the recessed portion 42 of the first lower mold 12 in the extended state (see FIG. 7). FIG.
8), after this loading, the upper mold 11 is pressed down,
As shown in the figure, a part of the outer core material 3 and a part of the coating material 6, that is, the tubular portion 1 and the outer peripheral portion 63 of the coating material 6 in the outer core material 3 are located in the outer space 40 and the coating material 6 of the same. When the portion 64 with the radial cut 5 is suspended in the inner space 39, the upper die 11 is returned upward at the time of the drooping state, and as a result, as shown in the upper half of FIG.
In which the outer core material 3 and the covering material 6 are loaded in the upper annular concave portion 31 of FIG.

Next, as shown in FIG. 9, the upper mold 11 of this embodiment is moved above the second lower mold 13, and in this state, the inner core 4 is dropped into the loading recess 52 of the second lower mold 13. The upper die 11 is pressed down while being fitted, and as shown in FIG.
As a result, the tubular portion 1 of the outer core material 3 and the outer peripheral portion 63 of the coating material 6 are folded obliquely inward and further depressed as shown in FIG. While being pushed into the gutter-shaped portion 2, the portion 64 with the radial cut 5 of the coating material 6 and the outer peripheral portion 63 are pressed and supported by the inner core material 4. In this state, the radially cut portion 64 and the outer peripheral portion 63 of the covering material 6 are sandwiched and stopped between the inner core material 4 and the inner wall of the gutter-shaped portion 2. However, the process that makes this state is considered as follows. That is, first, the inner core member 4 pushes the outer peripheral portion 63 of the coating material 6, and the pushed outer peripheral portion 63 pushes the radial cut portion 64, and the pushed radial cut portion 6 is pressed.
As the inner core 4 continues to bend as shown in FIG. 14 and the inner core 4 continues to be pushed in, the outer peripheral portion 63 further lowers the radial cut portions 64 together to realize the above-described pinching prevention state, and in this embodiment, Then, the diameter of the inner core material 4 changes in size, and the above process proceeds smoothly.

Further, after the radially incised portion 64 of the covering material 6 and the outer peripheral portion 63 are stopped by the inner core material 4, the upper mold 11 is positioned above the third lower mold 14. The upper mold 11 is pressed down (see FIG. 13), so that the tube-shaped portion 1 that has been folded obliquely is formed into a semicircle while further falling down, so that the coating material 6 covers the entire outer periphery of the outer core material 3. A so-called walnut ring (finished product 8) is obtained.

Although the finished product of the embodiment shown in the figure has a circular annular shape, it can be implemented in a triangular shape, a square shape, or another annular shape.

[0016]

The wrap ring according to the present invention has a ring-shaped outer core material having a circular cross-section in which both ends abut as described above, and a radial cut at the center. A covering material that covers the entire outer surface of the outer core material and that is sandwiched by the abutting end edges in a state where the outer peripheral portion and the radial cut-out portion are inside the outer core material; The outer peripheral portion and the radially cut portion function to enter the outer core material and then remain inside the outer core material. Specifically, the front side as well as the back side is entirely covered with a coating material, and there is no exposure of the metal surface as in the conventional example, and the fatal defect can be reliably solved. It is also very preferable in terms of decoration, and in the present invention, The outer periphery of the material and the radial cuts can be securely stopped by the edge of the outer core material, and the outer core material can be caulked with tension and can be covered without looseness It has excellent effects such as being able to do.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a component article.

FIG. 2 is a sectional view showing a manufacturing process.

FIG. 3 is a cross-sectional view showing the next manufacturing process.

FIG. 4 is a cross-sectional view showing a further manufacturing process.

FIG. 5 is a sectional view showing a further manufacturing process.

FIG. 6 is a sectional view of a finished product.

FIG. 7 is a cross-sectional view showing a relationship between an upper die and a first lower die.

FIG. 8 is a sectional view showing a state where the upper die is pressed down.

FIG. 9 is a cross-sectional view showing a relationship between an upper die and a second lower die.

FIG. 10 is a cross-sectional view showing a state in which the upper die is pressed halfway.

FIG. 11 is a cross-sectional view showing a state where the upper die is pressed down to the end.

FIG. 12 is a sectional view showing a third lower die.

FIG. 13 is a cross-sectional view showing a state in which a finished product is obtained by pressing an upper mold toward a third lower mold from above.

FIG. 14 is an explanatory view showing a state in which the edge of the coating material is sandwiched by pushing the inner core material.

FIG. 15 is a sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pipe-shaped part 2 Gutter-shaped part 3 Outer core material 4 Inner core material 5 Cut 6 Coating material 8 Finished product 11 Upper die 12 First lower die 13 Second lower die 14 Third lower die 21 Outer cylindrical part 22 Middle Cylindrical part 23 inner cylindrical part 24 first pin 25 first long hole 26 second pin 27 second long hole 28 upper wall 29 lower wall 30 first coil spring 31 upper annular concave part 32 upper half mold part 34 seat part 35 Covering material pushing portion 36 Annular member 37 Flange 38 Second coil spring 39, 40 Inner / outer side space for escape 41 Ridge 42 Depressed portion 44 Seat 45 Inner core material pushing portion 46 Annular member 47 Inner hole 48 Folding portion 49 Flange 51 third coil spring 52 loading concave part 54 half forming die part 55 lower half forming cylindrical part 56 seat part 57 annular member 58 flange 59 fourth coil spring 60, 61 concave and convex parts for positioning 3 the outer peripheral portion 64 radially cut containing portion of the dressing

Claims (1)

(57) [Claims] 1. An annular outer core material having a circular cross-section in which both ends abut each other, and a radial cut in the center portion are provided on the entire outer surface of the outer core material. A covering material which is covered and is sandwiched by the abutting end edges in a state where the outer peripheral portion and the radial notch are in the outer core material; A walnut ring, comprising: an inner core material that functions to enter the core material and remains in the outer core material.