JP3022616U - Material - Google Patents

Abstract

(57) [PROBLEMS] To provide a lightweight and tough handle member that can be easily obtained with a small number of parts and assembly steps by using a thermoplastic synthetic resin. SOLUTION: A handle main body 2 composed of a hollow body is molded by an injection blow molding method of a hard thermoplastic resin, and an outer peripheral surface of the handle main body 2 is integrally covered with a coating material 3 of a soft thermosetting synthetic resin. To form the handle member 1.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a member that can be used as a handle for various kinds of furniture, doors, automobile interior parts, and the like, as well as a handle for a child's device for preventing injury and a handle for a baby carriage, etc.

[0002]

[Prior art]

 As shown in FIG. 3, a conventional handle for furniture has a straight pipe main body 22 made of iron having a predetermined length and an outer peripheral surface of a soft synthetic resin coating 23 for preventing slippage. Bend members 24a and 24b made of synthetic resin pipe bent at an angle of about 90 ° are integrally fitted and fixed to both ends by an adhesive with the bent portions facing the same direction. 21 in which the metal mounting plates 25a, 25b provided at the tips of the bending members 24a, 24b of the member 21 are fixed to the mounted member B such as a door by the bolts 27, 27. Is. In the figure, reference numeral 26 is a synthetic resin ring-shaped holder provided on the surfaces of the mounting plates 25a and 25b, and 28a and 28b are decorative covers.

[0003]

[Problems to be solved by the device]

 Such known members are made of composite parts because of the high processing cost, increased cost, and difficult coating of soft resin when a metal pipe is bent and integrally processed. ing. In order to maintain the strength as a handle, the known member 21 has a straight pipe main body 22 formed of a metal such as iron, and the outer peripheral surface of the pipe main body 22 is covered with a soft synthetic resin coating material. Since it is covered with 23, it does not achieve sufficient weight reduction. Further, since the member 21 is composed of the straight iron pipe main body 22 and the synthetic resin vent members 24a and 24b attached to both ends of the pipe main body 21, the member 21 is not manufactured. Since it is necessary to assemble them separately after forming them separately, there is a problem that the assembly is complicated and the number of parts is large. Further, since it is necessary to increase the strength at the joint between the pipe main body 22 and the bend members 24a and 24b, it is difficult to suppress the cost increase. Moreover, since the pipe main body 21 and the bend members 24a and 24b are made of different materials, it is difficult to match the colors of the two, and there is a problem in the texture, and there are many problems such as the freedom of design being limited.

Therefore, it has been attempted to mold the pipe main body by injection molding of a synthetic resin, but it is difficult to obtain a thick pipe main body, and when the pipe main body is made thick, the shape of the molded product may deteriorate. However, there are many problems to be solved in manufacturing such as impairing the appearance and prolonging the molding time.

In view of such a current situation, the present invention is to provide a member that is extremely simple and easy to manufacture and has an excellent design that maintains a predetermined toughness in spite of its light weight. Is.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the invention according to claim 1 of the present invention is such that a handle main body made of a hollow body is molded by injection blow molding of a hard thermoplastic resin, and an outer circumference of the handle main body made of the hollow body. The surface is integrally coated with a coating material of a soft thermoplastic synthetic resin, which is a member.

[0007]

[Embodiment of device]

 In this invention, the handle main body that constitutes the member injects the molten resin into the cavity of the mold by the injection nozzle, blows the pressurized gas into the cavity while the resin is in the molten state, and presses the mold. It is obtained by a known injection blow molding method in which the molten resin inside is spread over the inner surface of the cavity to form a hollow molded body.

Examples of the hard thermoplastic synthetic resin used for forming the handle main body include polyoxyethylene, polyphenylene ether, ABS resin, polypropylene, acrylonitrile-styrene copolymer resin containing glass fiber, and polypropylene containing glass fiber. A hard thermoplastic synthetic resin capable of injection blow molding, such as, can be preferably used.

On the surface of the handle main body thus obtained, that is, on the outer peripheral surface, a non-slip coating material is integrally provided. The outer surface of the handle is coated with the coating material by inserting the handle body obtained by injection blow molding into the mold and then injection-molding the coating material of the soft thermoplastic synthetic resin on the outer surface. Is done by.

As the coating material, various elastomers such as polyurethane-based thermoplastic elastomer, styrene-based thermoplastic elastomer, polyolefin-based thermoplastic elastomer, polyvinyl chloride-based thermoplastic elastomer, and polyester-based thermoplastic elastomer are used. To be done. A heat-shrinkable elastomer consisting of a tube of polyvinyl chloride, rubber, etc. is used as the covering material, and the handle is covered with this to heat-shrink the heat-shrinkable elastomer so that the handle is integrated with the handle. It is also possible to coat.

[0011]

[Action]

 According to this invention, the member is formed by injection blow molding a hard thermoplastic resin into a main body of a handle made of a hollow body, and the outer peripheral surface of the main body of the handle made of the hollow body is integrally formed with a coating material of a soft thermoplastic synthetic resin. Since it is covered with a soft coating, it retains the weight and the required toughness, and the soft thermoplastic synthetic resin coating on the outside serves as a non-slip material with a soft touch.

[0012]

【Example】

 An embodiment of the member according to the present invention will be specifically described below with reference to the accompanying drawings. FIG. 1 is a vertical cross-sectional view showing an example of a member according to the present invention. A member 1 is a handle main body 2 formed of a hollow body curved in a substantially arc shape with a predetermined length, and an outer peripheral surface thereof. The covering material 3 is physically covered. As is clear from the sectional view of FIG. 1, the side surface of the member 1 is curved in an arc shape with a substantially uniform thickness, and the degree of curvature is increased at both ends so that the member 1 is flat for abutting and mounting on a target object. It forms a mounting surface. In addition, as seen from FIG. 2, the shape viewed from the top has a small width in the central portion in the lengthwise direction (the minimum width is 28 to 35 mm), and gradually increases toward the both ends to increase the width at both ends. It is formed so as to have the maximum width (about 73 mm) and is configured to fit easily on the hand. As a result, in each of the large width portions at both ends of the member 1, there are two bolt through holes 4 each having a large diameter portion into which the bolt head is inserted in the vertical direction and a small diameter portion through which the shaft portion penetrates. Although they are formed side by side, the number of each through hole may be one.

The handle main body 2 is integrally formed by an injection blow molding method of a hard thermoplastic synthetic resin, and is injected through a gate (the left end in the figure) formed in a mold for molding the handle main body 2. A pressurized gas such as nitrogen gas, air, or carbon dioxide gas for blowing is also injected from the gas injection port 5 formed in the vicinity of the gas. The amount of resin injected into the mold and the pressure of the gas to be injected are also included. In consideration of such conditions, it is possible to appropriately obtain the hollow handle main body 2 having a desired thickness.

The covering material 3 formed on the outer peripheral surface of the hollow handle main body 2 obtained by the injection blow molding method is composed of a heat-shrinkable elastomer made of a soft thermoplastic synthetic resin. The covering material 3 is formed by covering a tubular body of a heat-shrinkable elastomer on the outer peripheral surface of the handle main body 2 and shrinking it by heating to be integrated.

The thus obtained hollow member 1 is attached by inserting a fixing bolt (not shown) into the through hole 4 of the bolt and screwing it into an object such as a door and tightening.

As described above, since the member 1 is formed by the handle main body 2 made of a hard thermoplastic synthetic resin having a hollow inside, the member 1 is extremely lightweight and strong, and the outer covering material 3 is Since it is made of a soft thermoplastic synthetic resin, it has a soft feel and a good feel, and it can be reliably gripped without slipping.

[0017]

[Effect of device]

 According to this invention, the handle is made by injection blow molding, and the main body of the handle is a hollow body of hard thermoplastic synthetic resin, and the outer peripheral surface of the main body of the handle made of this hollow body is integrally formed by a covering material of soft thermoplastic synthetic resin. The inside of the handle is made of hard thermoplastic synthetic resin, and the weight of the handle is kept light and the required strength is maintained, while the outside soft thermoplastic synthetic resin coating provides a soft feel and prevents slipping. As a result, it is a member that is lightweight and has excellent strength. According to this invention, it is possible to obtain a member remarkably easily and inexpensively with an excellent design, without requiring any complicated assembly with a large number of parts unlike the conventional members. .

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a member according to the present invention.

FIG. 2 is a plan view of the member of FIG. 1 with a part cut away.

FIG. 3 is a vertical sectional view showing the structure of a conventional member.

[Explanation of symbols]

 1 Taking out member 2 Main body of grip 3 Covering material 4 Bolt through hole 5 Gas inlet

Claims (3)

[Scope of utility model registration request] 1. A handle main body made of a hollow body is molded by injection blow molding of a hard thermoplastic resin, and an outer peripheral surface of the handle main body made of the hollow body is integrally coated with a coating material of a soft thermoplastic synthetic resin. A member characterized by being formed. 2. The coating with the coating material is performed by an insert molding method in which the handle main body is placed in a molding die and a coating material of a soft thermoplastic synthetic resin is injection-molded on an outer peripheral surface thereof. The member according to claim 1. 3. The coating with the coating material uses a heat-shrinkable elastomer as the coating material, and heat-shrinks the heat-shrinkable elastomer to integrally coat the outer peripheral surface of the handle body. The member according to claim 1.