JP4831665B2 - Two-color safety pin and manufacturing method thereof - Google Patents

Description

  The present invention relates to a two-color safety pin composed of two different colors for an inner part and an outer part of a main body and a method for manufacturing the same.

  Conventionally, a safety pin made of synthetic resin has been known to mold the pin receiving part with a primary mold, support the pin on the molded pin receiving part and set it to the secondary mold to secondary mold the body. It has been. (For example, see Patent Document 1)

However, since the safety pin has a single color main body, it has poor decorative value, and the pin base support portion and the pin tip locking portion are the same color, so it is necessary to check the pin source and pin tip when attaching and detaching. There is a problem.
Japanese Examined Patent Publication No. 58-37892 (first and second pages and FIGS. 4 and 5)

  The present invention solves the above problems, and provides a two-color safety pin having a high decorative value because the main body is formed of two different colors, and capable of discriminating a pin base and a pin tip by color, and a manufacturing method thereof. Let it be an issue.

  In order to solve the above-mentioned problems, the two-color safety pin and the manufacturing method thereof according to the present invention employ the following configurations.

The invention according to claim 1 is made of synthetic resin and has a main body with a decorative hole formed in the center, a pin base support provided at one end of the main body, and provided at the other end of the main body. A pin end locking portion, and the main body is divided into an inner portion on the decorative hole side and an outer portion on the outer side thereof, and the inner portion, the pin base support portion, the outer portion and the pin tip are engaged with each other. The stop portions are integrally formed with different colors, and the inner portion is welded to the inner side of the outer portion of the main body.

In the invention according to claim 2, the inner part of the main body is primarily molded with a synthetic resin material of a certain color, and the outer part is secondarily molded with a synthetic resin material of another color on the outside of the primary molded product. A method of manufacturing a two-color safety pin for producing a safety pin, wherein primary molding is performed by injecting a certain color synthetic resin into a primary mold having a molding space with a pin base support portion attached to the inner part of the main body. In secondary molding, when the primary molded product is stored with the pin supported by the pin base support portion, a secondary molding space is formed in which a pin space is attached to the outer portion of the main body. It is characterized by injecting another color of synthetic resin into the mold.

  Advantages of the Invention According to Claim 1 The inner part and the outer part of the main body are configured in two different colors, so that the decorative value is increased and fulfills the function of a center accessory that enhances this when worn on clothes, Since the support portion of the pin base and the locking portion of the pin tip are formed in different colors on the back side of the main body, it is possible to easily attach and detach the safety pin by distinguishing the pin base and the pin tip by the color.

  Advantageous Effects of Invention According to Claim 2 The inner portion of the main body and the pin base support part are molded with a synthetic resin of a certain color using a primary mold, and this primary molded product is supported by the support part and the pin base is secondary. Since the outer portion and the pin tip support portion are formed in a different color, the color of the inner portion and the outer portion of the main body is different to increase the design value, and the pin base support portion and the pin tip It is possible to easily manufacture a two-color safety pin that can be distinguished from the locking portion by color.

  Embodiments of a two-color safety pin according to the present invention will be described below with reference to the drawings.

  1 to 4 show an embodiment of a two-color safety pin, and this two-color safety pin is indicated by the symbol A in each figure, and as shown in FIGS. The outer portion 1b has a different color, and the inner portion 1a of the two-color safety pin A is made of a synthetic resin of a certain color and the original portion of the pin 2, that is, the support portion 3 of the pin base 2a is attached. The outer portion 1b is formed of a synthetic resin of another color so that the engaging portion 4 of the pin tip 2b is attached.

  The inner portion 1a of the main body 1 of the safety pin A is provided with a decoration hole 5 having a drop shape as shown in FIGS. 2 and 4 at the center thereof, and a support portion 3 of the pin base 2a is attached to one end. Formed as follows. The support portion 3 has a box shape that opens to the back side, and is provided with a hole 6 through which an embedded end 2c of a pin base 2a, which will be described later, is provided on the inner wall.

  The outer portion 1b of the main body 1 surrounds the inner portion 1a, and is formed so that the engaging portion 4 of the pin tip 2b is attached to the end opposite to the inner portion 1a. And the said latching | locking part 4 provides the slit 7 which lets the pin tip 2b pass to one side, and forms the collar part 8 which latches the pin tip 2b which passed the split 7 next to this slit 7. FIG.

As the synthetic resin of the material constituting the inner part 1a and the outer part 1b, the outer part 1b to be secondary-molded is welded to the inner part 1a that has been primarily molded to form a stable two-color main body 1. A synthetic resin of the same type or the same type is used, and a mixed resin of polycarbonate and acrylic, an ABS resin, or the like is suitable as the type of the synthetic resin. The synthetic resin for the inner portion 1a and the synthetic resin for the outer portion 1b By using different colors and changing the color combinations, a wide variety of safety pins A can be obtained according to the preferences of people of a wide age group.

  The pin 2 is made of stainless steel that does not rust, and has a coil 9 at the pin base 2a as shown in FIGS. 1 and 4, and the pin tip 2b has a sharp shape so as to easily penetrate the cloth or the like. The pin base 2a is housed in a box-shaped support portion 3, the embedded end 2c is protruded from the hole 6 provided in the support portion 3, and the inner portion 1a is housed in a secondary mold described later. When the outer portion 1b of the main body 1 is secondarily formed, the fixed piece 10 of the embedded end 2c is integrally formed with the outer portion 1b.

  The two-color safety pin A having the above-described structure is formed by first molding the inner part 1a of the main body 1 provided with the support part 3 of the pin base 2a at one end with a synthetic resin of a certain color, and is attached to the inner part 1a formed by the primary molding. The pin base 2a is placed in the support portion 3 of the pin base 2a, the inner portion 1 is accommodated in a secondary mold, and the engaging portion 4 between the outer portion 1b of the main body 1 and the pin tip 2b is formed of a synthetic resin of a different color. For example, a two-color safety pin is obtained in which the inner portion 1a and the outer portion 1b exhibit different colors, and the locking portion 3 of the pin base 2a and the locking portion 4 of the pin tip 2b can be distinguished by color.

  5 and 6 show an embodiment of a method for manufacturing a two-color safety pin, in which the inner portion 1a of the main body 1 is primarily molded with a synthetic resin material of a certain color, and other parts are formed outside the primary molded product. A method of manufacturing a two-color safety pin by secondary molding of the outer portion 2b with a synthetic resin material of color to produce a two-color safety pin A. The primary molding is performed by supporting the pin base 2a on the inner portion 1a of the main body 1. The synthetic resin of a certain color is injected into the primary mold 13 having the molding spaces 11 and 12 with the shape of the part 3, and the secondary molding is performed by placing the pin 2 on the support part 3 of the pin base 2a. When supported and housed, molding spaces 14, 15, 16 having a shape in which the locking portion 4 of the pin tip 2 b and the fixing piece 10 of the embedded portion 2 c of the pin 2 are attached to the outer portion 1 b of the main body 1 on the outside thereof. This is performed by injecting synthetic resin of another color into the secondary mold 17 to be formed.

  The primary mold 13 is divided into a lower mold 13a and an upper mold 13b as shown in FIG. 5, and the lower mold 13a has a shape matching the inner portion 1a of the main body 1 of the two-color safety pin A. A space 11 is formed, and a molding space 12 having a shape matched to the support portion 3 of the pin base 2a having a box shape is formed on the upper mold 13b side so as to communicate with one end of the molding space 11.

  The secondary mold 17 is divided into a lower mold 17a and an upper mold 17b as shown in FIG. 6, and on the lower mold 17a side, it engages with the decorative hole 6 of the primary molded inner portion 1a. A support portion 18 for supporting the portion 1a is provided, and a molding space 19 having a shape matched to the outer portion 1b of the main body 1 is formed outside the inner portion 1a supported by the support portion 18, and on the upper mold 17b side. Is formed with a space 19 for receiving the support portion 3 of the pin base 2 a attached to the inner portion, and a pin through hole 20 for passing the pin 2 projecting obliquely upward from the support portion 3. The molding space 15 having the shape matched to the locking portion 4 of the pin tip 2b having the cut 7 and the flange portion 8 and the molding space 16 having the shape matched to the fixing piece 12 for fixing the embedded portion 2c of the pin 2 are included. Is formed.

In order to manufacture the two-color safety pin A with the primary mold 13 and the secondary mold 17, first, for example, blue synthetic resin is injected into the molding spaces 11 and 12 of the primary mold 13 and the inner portion 1 a of the main body 1 and the pin The support portion 3 of the original 2a is formed. Then, the primary molded inner portion 1a is removed from the primary mold 13, the pin base 2a of the coil 8 is stored in the support portion 3 of the pin base 2a, and the embedded end 2c is taken out from the hole 6, and FIG. As shown, when the secondary mold 17 is housed in the lower mold 17a and supported by the support portion 18, a molding space 14 for molding the outer part 1 of the main body 1 is formed outside the inner part 1a. Therefore, the secondary mold upper mold 17b is placed in the space 19 so that the support portion 3 of the pin tip 2b fits in the lower mold 17a so that the pin 2 fits in the through hole 20. When the synthetic resin is injected, the white outer portion 1b is formed outside the blue inner portion 1a, and the locking portion 4 of the pin tip 2a and the fixed piece 10 of the embedded end 2c of the pin base 2a are formed. In addition, since the support portion 3 of the blue pin base 2a and the locking portion 4 of the white pin tip 2b exist on the back side of the main body 1 composed of two colors of blue and white, the decorative value is high and used. The two-color safety pin A that is easy to do can be easily mass-produced.

  The product value and ease of use of the safety pin can be significantly improved.

The front view of the two-color safety pin which concerns on this invention. The rear view same as the above. The right side view same as the above. The perspective view which shows the inner part same as the above. Sectional drawing of the primary type used for manufacture. Sectional drawing of the secondary type | mold used for manufacture.

Explanation of symbols

A Two-color safety pin 1 Body 2 Pin 2a Pin base 2b Pin tip 3 Pin base support 4 Pin tip lock

Claims (2)

A main body made of synthetic resin and having a decorative hole in the center, a pin base support provided at one end of the main body, and a pin tip locking part provided at the other end of the main body Prepared,
The main body is divided into an inner part on the decorative hole side and an outer part on the outer side, and the inner part, the pin base support part, and the outer part and the pin point locking part are integrally formed by different colors. With forming
A two-color safety pin, wherein the inner part is welded to the inner side of the outer part of the main body . A two-color safety pin that forms a two-color safety pin by first molding the inner part of the main body with a synthetic resin raw material of a certain color and secondary molding of the outer part with a synthetic resin raw material of another color on the outside of this primary molded product A manufacturing method of
Primary molding is performed by injecting a synthetic resin of a certain color into a primary mold having a molding space with a pin base supporting part attached to the inner part of the main body,
Secondary molding is a secondary mold in which when the primary molded product is stored with the pin supported by the support part of the pin base, a molding space is formed on the outer side of which the pin part locking part is attached to the outer part of the main body. A method of manufacturing a two-color safety pin, which is performed by injecting a synthetic resin of another color into

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