KR20020044019A - Multi layer type assist handle grip and method of making it - Google Patents

Abstract

PURPOSE: A manufacturing method of a multilayered assist handle grip is provided to improve quality and to reduce the weight by manufacturing the handle grip with TPE(Thermoplastic elastomer) and ABS(Acrylonitrile-butadiene-styrene), and to prevent environmental pollution by recycling conveniently. CONSTITUTION: A multilayered assist handle grip is composed of an inner layer(44), and an outer layer(42) surrounding the inner layer. The inner layer is manufactured with ABS resin, and the outer layer is manufactured with TPE. Molten TPE resin is injected through an injection part of a first injection molding machine to a mold. Molten ABS resin is injected through an injection part of a second injection molding machine to the mold in cooling the TPE resin as 30-50 %. The ABS resin is filled with pushing the TPE by injection pressure, and the handle grip is manufactured with substituting PVC(polyvinyl chloride) with TPE. The quality is improved, and the weight is reduced with making the handle grip of ABS and TPE.

Description

MULTI LAYER TYPE ASSIST HANDLE GRIP AND METHOD OF MAKING IT}

The present invention relates to a multi-layer assist handle grip and a method of manufacturing the same, and more particularly, a multi-layer assist handle grip made of TPE resin and an inner layer made of ABS instead of soft PVC, and a method of manufacturing the same. It is about.

Various convenience devices for the driver and the passenger are provided in the interior of the vehicle. Convenience devices include, for example, cup holders for placing cups or beverage cans, armrests for placing arms, and sun visors for blocking light from the front. In the passenger car, there are one assist handle grips on the headlining and roof part of the passenger seat in the middle of the A-pillar trim and B-pillar trim, and the left and right assist handle grips respectively at the mid-point of the B-pillar trim and C-pillar trim. . The assist handle grip acts as a kind of handle that increases safety and convenience by allowing the occupant to hold his / her hand in balance during rapid turning, sudden starting and sudden stopping while driving the vehicle.

1 shows an installation position and a mounting state of a general assist handle grip. The assist handle grip 4 is fixed to the vehicle by three screws except for the driver's seat, and after assembly, the cover 8 is fitted to prevent direct exposure of the screw 6. In addition, the assist handle grip 4 is fitted with an S-shaped ring 10 to hang a hanger or the like. As such, there are two types of assist handle grips, one of which is a type that covers the fasteners with a cover 8 in consideration of appearance, and a type of one-piece.In terms of function, the assist handle grips can be moved with a fixed type and a small space where the assist handle grips are fixed. Flexible methods are used.

Most of these assist handle grips are manufactured by a general injection method, and some small cars are manufactured using a gas assist injection method. In addition, the assist handle grip is an interior material component, and it is advantageous to have more flexibility in function, and the quality of the emotions, such as a touch feeling, should be considered when the passenger grasps the handle.

As a current manufacturing method for making such assist handle grips, a general injection molding method is used, and the material is made of soft PVC. However, the assist handle grips that are currently applied are mostly thick products, and the production cost is high due to excessive use of PVC. In addition, the use of PVC is gradually decreasing due to the strengthening of other regulations on environmental issues, and there is little recycling, and when incinerated, Cl2 gas is generated to corrode the furnace, and dioxin is generated. I have a problem. In addition, plasticizers, which are added as essential elements in the production of PVC, are required to replace new materials, such as causing odors in automobile interiors.

The present invention for solving this problem is made of two materials of thermoplastic polymer (thermoplasticelastomers; TPE) and ABS in order to replace the excessive PVC required in the manufacture of the conventional assist handle grip, Its purpose is to provide a multi-layer assist handle grip that can reduce weight and solve environmental pollution problems.

It is another object of the present invention to provide a method for manufacturing a multilayer assist handle grip, wherein the outer layer of the assist handle grip is made of TPE and the inner layer is made of ABS.

1 is an exploded perspective view showing a conventional vehicle assist handle grip;

2a to 2c is a process chart showing the manufacturing process of the multi-layer assist handle grip according to the present invention,

Figure 3 is a partially cutaway cross-sectional view of the multi-layer assist handle grip produced by the present invention.

[Explanation of symbols on the main parts of the drawings]

20, 22: movable, stationary mold 24: connecting rod

28, 30: 1st, 2nd molding machine injection part 32: Resin supply path

40: Assist handle grip 42: TPE outer layer

44: ABS inner layer

In order to achieve the above object, the multi-layer assist handle grip of the present invention is mounted on the headlining and the roof of the vehicle, and the assist handle grip which can be used as a handle that the passenger holds by hand, such as when turning or sudden departure, is made of ABS material. An inner layer and an outer layer of a TPE material surrounding the inner layer of the ABS material, characterized in that consisting of.

According to another aspect of the present invention, there is provided a method of manufacturing a multi-layer assist handle grip, which is mounted on a head lining and a roof part of a vehicle, and which can be used as a handle that a passenger holds by hand, such as when turning or making a quick start. And primary injection of molten TPE resin into the mold through the first injection molding machine, and secondary injection of molten ABS resin into the mold through the second molding machine injection when the TPE resin is cooled by about 30 to 50%. Characterized in that it comprises a step.

Hereinafter, a multilayer assist handle grip and a manufacturing method thereof according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 2 and 3.

2a to 2c is a process chart showing the manufacturing process of the multi-layer assist handle grip according to the present invention, Figure 3 is a partial cutaway cross-sectional view of the multi-layer assist handle grip manufactured by the present invention.

As a method for manufacturing an assist handle grip having a dual structure of TPE and ABS instead of conventional PVC, the present invention employs a direction for simultaneously injection molding different materials in the same mold in order to improve productivity.

That is, as shown in FIG. 2A, the first molding machine is injected into the space provided by the movable mold 20 and the fixed mold 22, which are held in the engaged state by the connecting rod 24 and the coupling block 26. Through the injection molding unit 28 and the injection molding unit 30, the TPE resin and the ABS resin are sequentially injected and molded. To this end, first, the molten TPE resin is injected into the space between the molds 20 and 22 through the supply path 32 through the first injection molding machine 28, and then after about 2 to 3 seconds. After the first TPE resin is cooled by about 30 to 50%, molten ABS is injected through the injection molding unit 30 of the second molding machine as shown in FIG. At this time, ABS is filled by pushing the TPE injected primarily by the injection pressure toward the mold, the outside is made of TPE material, the inside is made of ABS material.

Next, as shown in FIG. 2C, the ABS is completely filled after the TPE, and then, through the cooling process, the assist handle grip of the multilayer structure as shown in FIG. 3 is completed.

3, there is shown the assist handle grip of the present invention made through the manufacturing process as described above. The assist handle grip 40 is constructed of an inner layer 44 made of ABS material and an outer layer 42 made of TPE material surrounding the inner layer 44 made of ABS material. Therefore, while securing sufficient rigidity through the inner layer 44 made of ABS material, it provides excellent emotional quality through the outer layer 42 made of TPE material.

The physical properties of the multilayer assist handle grip of the present invention thus made and the assist handle grip made of conventional PVC were tested, and the results as shown in Table 1 were obtained.

TPE (Invention) PVC (conventional) Great usually Great Bad Great usually Great Great 0.9-0.98 1.25-1.35 Harmless harmfulness Heat fusion glue Good Good

As can be seen in Table 1, the assist handle grip of the multilayer structure according to the present invention showed excellent results in most evaluation items.

According to the present invention described above, by using a double material of TPE and ABS instead of soft PVC, it is excellent in emotional quality to induce high-quality interior parts and light weight, and excellent recycling properties due to the nature of the ABS material Does not cause pollution problems. In addition, by dispensing heterogeneous materials from the same mold using a multiple injection method at the same time, because the bonding of dissimilar materials is made in the mold during the cooling process, no separate adhesive or treatment process is required.

Claims (2)

In the assist handle grip mounted on the headlining and roof of the vehicle, which can be used as a handle that is held by the occupant during turning or sudden start, An inner layer 44 made of ABS material, Multi-layer assist handle grip, characterized in that consisting of the outer layer 42 of TPE material surrounding the inner layer 44 of the ABS material. In the manufacturing method of the assist handle grip mounted on the headlining and roof of the vehicle, which can be used as a handle that is held by the occupant during turning or sudden start, Firstly injecting molten TPE resin into the mold through the first molding machine injection unit 28; And injecting molten ABS resin into the mold through the second molding machine injection part 30 when the TPE resin is cooled by about 30 to 50%, thereby filling the second assist handle grip.