JP6004835B2 - Manufacturing method for left and right shock absorbing units - Google Patents

Description

The present invention relates to a method for manufacturing an impact absorbing unit for a vehicle door in which an impact absorbing member is disposed between a door panel and a door trim.

 Conventionally, as a shock absorbing structure for a vehicle door, there is a structure in which a shock absorbing pad is formed by foaming a resin material in a space formed by a box-shaped portion of a pocket case attached to a door trim and a door trim ( For example, see Patent Document 1).

JP 2003-300417 A

 However, the pocket case in the conventional structure is formed by molding a synthetic resin into a predetermined shape by an injection molding method, and the portion constituting the pocket is also relatively rigid, and this portion is the shock absorbing capacity of the shock absorbing pad. Therefore, there is a problem that it is not easy to adjust the shock absorbing capacity to a desired value.

In addition, since the foam-type shock absorbing pad is provided separately from the box-shaped portion of the pocket case, there is a problem that the number of parts increases, and the weight and cost are hindered.

The present invention has been made in view of the above-described conventional situation, and can reduce the mold cost in the case of providing an article accommodating portion and an impact absorbing member, can suppress an increase in the number of parts, weight, and cost, and further has an impact absorbing ability. It is an object of the present invention to provide a method of manufacturing an impact absorbing unit that can be easily adjusted.

The present invention provides a left and right shock absorbing member disposed between the left and right door panels and the left and right door trims covering the door panels from the passenger compartment side, and between the door panel and the door trim. A manufacturing method of a left and right shock absorbing unit having left and right storage case portions forming an article storage space,
Forming the left and right impact absorbing members and the left and right housing case parts integrally by blow molding,
The blow-molded product is in the form of a sealed box, is formed integrally with the box-shaped housing case portion and the box-shaped housing case portion common to the left and right housing case portions, and is arranged in two upper and lower stages It has a structure with upper and lower shock absorbing members,
The left shock absorbing unit includes a left receiving case portion formed by dividing the box-shaped receiving case portion into left and right, and a left shock formed by separating the upper and lower shock absorbing members into upper and lower portions. The right impact absorbing unit includes a right accommodating case portion obtained by dividing the box-like accommodating case portion into left and right, and the upper and lower impact absorbing members. It is characterized by being integrally formed with the right shock absorbing member formed by separating the upper and lower sides .

 According to the present invention, since the impact absorbing member and the accommodating case portion forming the article accommodating space are integrally formed by blow molding, the mold cost is lower than when the impact absorbing member and the accommodating case portion are separately molded. While being able to reduce, the increase in a number of parts, a weight, and cost can be suppressed.

In addition, the left and right shock absorbing units formed by dividing one blow-molded product are used for the left and right doors, so the number of parts and cost are reduced compared to the case where the left and right are blow-molded separately. The increase can be further suppressed.

 In addition, since the storage case portion is formed by blow molding, it is easy to make the storage case portion thin and have low rigidity, so that the storage case portion affects the shock absorbing ability of the shock absorbing member. There is almost no. Further, since the shock absorbing member is formed by blow molding, it is easy to appropriately set the shape, size, etc., and as a result, the shock absorbing ability can be adjusted to a desired value.

It is a cross-sectional schematic diagram of the door provided with the shock absorption structure which has the shock absorption unit for demonstrating the formation process of this invention. It is the front view seen from the vehicle interior side of the door trim of the said shock absorption structure. FIG. 3 is a cross-sectional side view (a cross-sectional view taken along line III-III in FIG. 2) of an article accommodating space portion of the shock absorbing structure. FIG. 4 is a cross-sectional side view (a cross-sectional view taken along line IV-IV in FIG. 2) of a shock absorbing pad portion of the shock absorbing structure. FIG. 5 is a cross-sectional plan view (cross-sectional view taken along the line V-V in FIG. 2) of the shock absorbing unit portion of the shock absorbing structure. It is a front perspective view of the said shock absorption unit. It is a top view of the impact absorption unit which concerns on Example 1 of this invention. It is a side view of the said shock absorption unit. It is a disassembled perspective view of the said shock absorption unit. It is a cross-sectional top view of the impact absorption unit which concerns on Example 2 of this invention. It is a cross-sectional top view of the impact absorption unit which concerns on Example 3 of this invention. FIG. 12 is a cross-sectional side view (cross-sectional view taken along line XII-XII in FIG. 11) of the shock absorbing unit.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 to 6 are diagrams for explaining the formation process of the present invention.

In each figure, 1 is a side door having an impact absorbing structure in the formation process of the present invention. The side door 1 includes a door panel 2 and a door trim 3 disposed so as to cover the door panel 2 from the vehicle interior side. The door panel 2 is formed by joining an outer panel 2a and an inner panel 2b so as to form a middle shape, and includes a door glass and its lifting mechanism.

The door trim 3 is for improving the appearance and protecting the passenger, and is attached to the inner panel 2b of the door panel 2. Between the inner panel 2b and the door trim 3, an impact absorbing unit 6 that is characteristic of the present embodiment is disposed.

The impact absorbing unit 6 includes an impact absorbing pad portion 4 for suppressing an impact load from being transmitted to an occupant at the time of a vehicle side collision, and an accommodating case portion 5 that forms an article accommodating space A with the door trim 3. It is formed integrally by a blow molding method. The position of the shock absorbing unit 6 is set so that the height of the shock absorbing pad portion 4 corresponds to the height of the waist of the occupant seated on the seat.

The blow molding method in which the shock absorbing unit 6 is formed is a method in which a so-called parison in which a plastic raw material is melted by a blow molding machine into a pipe shape is sandwiched between a pair of molds having mold surfaces corresponding to the outer surface shape of the product. This is a method of making a product by blowing air into the inside and inflating with air.

In this way, the parison is supplied into the molding die composed of the shock absorbing pad mold portion and the housing case mold portion, and the shock absorbing unit 6 having a thin and complicated shape is obtained by blowing air. be able to.

The shock absorbing pad portion 4 has a sealed box shape having upper and lower walls 4a and 4b, front and rear walls 4c and 4d, and left and right walls 4e and 4f. The front wall 4c and the rear wall 4d are connected to each other at the bottoms of the recesses 4g provided so as to be recessed from the front and rear at appropriate places. In this way, the shock absorbing pad portion 4 is set in a desired shape. ing. The shock absorbing performance can be adjusted by appropriately setting the shape, dimensions and the like of the shock absorbing pad portion 4. In addition, 4h is a flange part fixed to the door trim 3 with fastening members, such as a clip.

On the other hand, the storage case portion 5 has an open box shape having an opening 5a on the vehicle interior side by cutting and removing the front wall of the sealed box-shaped portion formed by blow molding. The opening 5a is covered with a door trim 3, thereby forming an article accommodation space A. Reference numeral 5b denotes a flange portion attached to the door trim 3. Further, the articles are taken into and out of the article accommodating space A through an outlet 3 a formed in the door trim 3.

According to the formation process of the present invention, since the shock absorbing pad portion 4 and the housing case portion 5 are integrally formed by the blow molding method, the mold cost is lower than when the shock absorbing pad and the housing case are separately molded. While being able to reduce, the increase in a number of parts, a weight, and cost can be suppressed.

 Further, since the housing case part 5 is formed by the blow molding method, the housing case part 5 can be easily made thin and low in rigidity, and the impact absorbing ability of the shock absorbing pad part 4 is adversely affected. Almost no. Further, since the shock absorbing pad portion 4 is formed by the blow molding method, the shock absorbing pad portion 4 can be easily formed into a desired shape and size, so that a desired shock absorbing ability can be easily obtained.

7 to 9 are diagrams for explaining the first embodiment of the present invention.

In the description of the establishment process , the shock absorbing unit is blow-molded separately for the left and right doors. However, in the first embodiment , one blow-molded product is divided and used for the left and right doors. .

 In the state of the blow-molded product 6 ', the housing case portion 5' has a sealed box shape, and the shock absorbing pad portion 4 'is separated into upper and lower pad portions 4'b and 4'a in two stages. Is formed. The storage case portion 5 'is cut along a cut line c to form a left shock absorbing unit 6'a in which a left storage case portion 5'a and a lower pad portion 4'a are integrally formed. The right shock absorbing unit 6'b is integrally formed with the case portion 5'b and the upper pad portion 4'b.

Of course, the left and right storage case portions 5'a and 5'b may be integrated with the upper and lower pad portions 4'b and 4'a.

In this embodiment, the left, and integrally blow molding a right impact-absorbing units 6'a, 6'b, since so as to divide thereafter can further reduce the number of components, weight and cost. Also in this embodiment, the same effect as that described in the establishment process can be obtained.

FIG. 10 is a diagram for explaining a second embodiment of the present invention. In the figure, the same reference numerals as those in FIGS. 1 to 6 denote the same or corresponding parts.

In the second embodiment , a cup holder portion 7 is formed between the impact absorbing unit 6 and the door trim 3. And it is comprised so that the cold wind or warm air from an air conditioner may flow in the said shock absorption unit 6, and the said cold wind or warm air blows off toward a vehicle interior.

In the second embodiment , a cooling / heating effect that cools or warms the can juice or the like in the cup holder portion 7 is obtained, and a spot cooler effect is also obtained in which cold air or hot air blows out in a spot manner in the vehicle interior.

11 and 12 are diagrams for explaining a third embodiment of the present invention. In the figure, the same reference numerals as those in FIGS. 1 to 6 denote the same or corresponding parts.

In the third embodiment , the storage case portion 50 of the shock absorbing unit 6 is formed in a box shape having an article loading / unloading port 50a at the top. A part 50 c of the front wall 50 b of the housing case part 50 is formed in the opening 3 b of the door trim 3 so as to be substantially flush with the door trim 3. The part 50c is painted in a color different from that of the door trim 3.

In the third embodiment , since the part 50c of the housing case 50 is positioned in the opening 3b formed in the door trim 3, and the part 50c is different from the door trim 3, the design effect can be improved.

1 Side door 2 Door panel 3 Door trim 4 Shock absorbing pad (shock absorbing member)
4'a Left pad (impact absorbing member)
4'b Right pad (impact absorbing member)
5 housing case
5 'Common left and right housing case
6 Shock absorption unit
6 'blow molding
6'a Left shock absorbing unit
6'b Right shock absorbing unit A Object storage space

Claims (1)

An article storage space is provided between the left and right shock absorbing members disposed between the left and right door panels and the left and right door trims covering the door panels from the passenger compartment side, and the door panel and the door trim. A method of manufacturing a left and right shock absorbing unit having left and right storage case portions to be formed,
Forming the left and right impact absorbing members and the left and right housing case parts integrally by blow molding,
The blow-molded product is in the form of a sealed box, is formed integrally with the box-shaped housing case portion and the box-shaped housing case portion common to the left and right housing case portions, and is arranged in two upper and lower stages. It has a structure with upper and lower shock absorbing members,
The left shock absorbing unit includes a left receiving case portion formed by dividing the box-shaped receiving case portion into left and right, and a left shock formed by separating the upper and lower shock absorbing members into upper and lower portions. The right impact absorbing unit includes a right accommodating case portion obtained by dividing the box-like accommodating case portion into left and right, and the upper and lower impact absorbing members. Is formed integrally with the shock absorbing member on the right.
A method of manufacturing the left and right shock absorbing units.

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