JPH0789449A - Method for filling insulator into bag structure part of vehicle car body and insulator assembly used therefor - Google Patents

Abstract

PURPOSE:To simplify and facilitate insulator filling work in reducing a load noise or the like by forcibly inserting and filling a foaming resin insulator into a bag structure part from an inserting hole. CONSTITUTION:A hole 2 reaching the vicinity of a tip surface from a base end surface is arranged in an insulator 1, and a bar-shaped part 6 integrally and protrusively arranged in a cap body 3 is inserted in the hole 2, and in a condition where a tip flange part 6a comes into contact with a bottom part 2a of the hole 2, these are combined with each other, and an insulator assembly body 8 is constituted. After a tip part of the insulator 1 is forcibly inserted from an inserting hole (b), when a cap part 4 is pushed, the flange part 6a presses a bottom part 2a of the hole 2, and the insulator 1 enters smoothly like being pulled in from the inside of a bag structure part (a), and simultaneously when the inside of the bag structure part (a) is filled after the insulator 1 finishes entrance, an engaging claw part 5 engages with an inside peripheral part of the inserting hole (b), and the cap part 4 is fixed in a condition of blocking up the inserting hole (b).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of filling an insulator into a bag structure portion such as a rear wheel arch portion of a vehicle and an insulator assembly used therefor.

[0002]

2. Description of the Related Art In vehicles, for example, as one of measures for reducing road noise, it has been conventionally practiced to fill an insulator in a body bag structure portion (closed cross-section structure portion) such as a front portion of a rear wheel arch. .

The method of filling the insulator into the body bag structure portion is as follows. In the fitting step, an insulator made of urethane foam is pushed through the insertion hole provided on the wall surface of the bag structure portion to be filled, and after the insulator is filled, the insertion hole is capped. And a method in which the heat-sensitive foam material is set in advance in the bag structure portion and the heat-sensitive foam material expands and expands by the furnace heat in the coating process to fill the bag structure portion (for example, JP-A-4-22838).
No. 1)).

[0004]

Among the above, in the method of pushing the insulator made of urethane foam through the insertion hole, the bag structure portion to be filled with the insulator, for example, the front side portion of the rear wheel arch has a longitudinal sectional shape. When the width of the lateral wall is longer than the height of the wall and the cross-sectional shape is relatively laterally long, as shown in FIG. 2 (A), the insertion hole b provided in the inner vertical wall of the bag structure portion a is not so much. Since it cannot be made large, if a long insulator c made of urethane foam is pushed into the insertion hole b smaller than the cross-sectional area of the insulator by, for example, a finger, the density of the portion of the insulator pushed by the finger becomes high and becomes hard. It is difficult to push the insulator inside during the outfitting process, and the pushed insulator becomes partially hard. Soundproof function is reduced, a problem that may occur. If the insertion hole b is provided in the upper lateral wall of the bag structure portion a as shown in FIG. 2B, the insulator made of urethane foam can be easily inserted, but the closing cap of the insertion hole b is formed on the outer surface of the vehicle body. However, such a method cannot be used at all because it is exposed to the outside and significantly impairs the appearance of the vehicle.

As a specific example of a method for filling the inside of the bag structure by foaming and expanding the thermosensitive foam material preset in the bag structure by the furnace heat in the coating process, as shown in FIG. The heat-sensitive foam material d is attached to a part of the inner surface of the bag structure portion a in the panel assembly step of the part, and the heat-sensitive foam material d expands and expands due to the heat of the coating step to fill the inside of the bag structure portion a. And a sealant assembly in which a cap is integrally fixed to one end of a heat-sensitive foam having a substantially cylindrical shape, as disclosed in Japanese Patent Laid-Open No. 4-228381.
The heat-sensitive foam material is inserted from the insertion hole provided on the inner vertical wall of the bag structure part and fixed and assembled with the cap sealing the above-mentioned insertion hole, and the heat-sensitive foam material expands and expands due to the heat of the painting process. There is a method of filling the inside of the bag structure.

The method in which the heat-sensitive foam material is preliminarily set in the bag structure portion and foamed and filled by the heat in the coating process as described above has no problem in mounting workability, but in the bag structure body in the coating process. There is a problem that paint cannot be applied to the area where the heat-sensitive foam is attached or the area around the insertion hole where the cap is fixed, and a decrease in rust prevention cannot be avoided. From the point of view, the method of pushing the insulator made of urethane foam into the bag structure in the fitting process after the painting process is far superior.

An object of the present invention is to provide an insulator filling method which can satisfy both workability and rust preventive properties, and an insulator assembly used therefor.

[0008]

According to the present invention, an insulator made of a foamed resin material is press-fitted through an insertion hole provided in a part of a wall portion of a bag structure portion of a vehicle body in the fitting process, and the insulator is used to form the inside of the bag structure portion. A method of filling the insulator with a hole extending from the proximal end surface to the vicinity of the distal end surface of the insulator,
A cap body for closing the insertion hole, a plurality of cap portions, and a plurality of portions protruding from one surface of the cap portion and engaged with an inner peripheral edge portion of the insertion hole to fix the cap portion in the insertion hole closed state. The cap body is formed of a synthetic resin integrally molded product having an engaging claw portion and a rod-shaped portion protruding from substantially the center of one surface of the cap portion, and the cap-shaped portion is inserted into the hole of the insulator. The insulator assembly is assembled with the tip end surface of the rod-shaped portion in contact with the bottom portion of the hole, and the cap body is pushed after press-fitting the insulator tip portion of the insulator assembly through the insertion hole. As a result, the tip end surface of the rod-shaped portion presses the bottom of the hole on the inner side of the insertion hole, the insulator is pulled in from the inside of the bag structure portion and enters the bag structure portion, and the entire insulator enters the bag. Structure It is characterized in that the engagement claw portion of the cap body in a state filled with portion was so the cap portion to engage the insertion hole inner peripheral portion is fixed in a state of closing the insertion hole.

[0009]

As described above, the pushing force of the cap body acts on the bottom surface of the hole near the tip surface of the insulator through the rod-shaped portion, so that the insulator is not pushed from the outside but from the inside of the bag structure. Since it will be pulled in, the insulator will relatively easily go into the inside of the insertion hole compared to pushing it in from the outside, and the insulator will be inserted and the cap will be pushed in one action by pushing the cap body. Closing of the insertion hole by the part can be completed at the same time, and the insulator filling work can be significantly simplified, and the insulator filling work is performed in the fitting process after the painting process, so it is completely rust-proof. there is no problem.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIG.

In FIG. 1A, reference numeral 1 is an insulator made of foamed resin such as urethane foam, and the insulator 1 is formed in a substantially prismatic shape having an appropriate cross-sectional area according to the cross-sectional shape of the bag structure. The insulator 1 is formed with a hole 2 extending from one end surface (base end surface) to the vicinity of the other end surface (tip surface).

Reference numeral 3 denotes a cap body, and the cap body 3
Is a cap portion 4 for closing an insertion hole b provided in an inner vertical wall of a bag structure portion a described later, and a plurality of cap portions 4 protruding from one surface of the cap portion 4 and engaged with an inner peripheral edge of the insertion hole b. The engaging claw portion 5, a rod-shaped portion 6 projecting from a substantially central portion of one surface of the cap portion 4 by an appropriate length, and a clamp-shaped holder portion 7 projecting from the other surface of the cap portion 4. It is constructed as an integrally molded product of synthetic resin with a structure having a structure, and the rod-shaped portion 6 of the cap body 3 is inserted into the hole 2 of the insulator 1 and the flange portion 6a at the tip of the rod-shaped portion 6 contacts the bottom portion 2a of the hole 2. The insulator assembly 8 is constructed by assembling the state.

In the above description, the diameter of the hole 2 provided in the insulator 1 matches the diameter of the flange portion 6a at the tip of the rod-shaped portion 6 of the cap body 3 or the diameter of the flange portion 6a so that the flange portion 6a can be press-fit with a proper interference. The protruding length of the rod-shaped portion 6 is set so as to substantially match the depth of the hole 2.
The depth of the hole 2 is such that the bottom portion 2a of the hole 2 is as close as possible to the tip surface of the insulator 1 and the thickness from the bottom portion 2a to the tip surface of the insulator is the flange portion 6a at the tip of the rod portion 6.
It is appropriately set so that it can sufficiently withstand the pressing force of.

In FIG. 1 (B), 10 is a rear wheel arch portion of the vehicle.
As shown in FIGS. 1C and 1D, is composed of a rear quarter panel inner 11, a rear quarter panel outer 12, and a rear wheel apron 13, and a rear quarter panel is provided on the front side of the rear wheel arch portion 10. A case where the bag structure portion a formed by the inner 11 and the rear quarter panel outer 12 is filled with the insulator 1 will be described below with reference to FIGS. 1 (C) and 1 (D).

An insertion hole b for the insulator 1 is provided in an inner vertical wall (vertical surface of the rear quarter panel inner 11) of the bag structure portion a, and the insulator assembly 8 of the insulator assembly 8 is installed in a fitting process after the vehicle body painting process. The insulator 1 is pushed in through the insertion hole b, and then the cap portion 4 of the cap body 3 is pushed. Then, the flange portion 6a at the tip of the rod portion 6 presses the bottom portion 2a of the hole 2 of the insulator 1,
As shown in (C), the insulator 1 enters the bag structure portion a while being compressed and elastically deformed in the radial direction at the peripheral portion of the insertion hole b. In this case, the flange portion 6a at the tip of the rod portion 6 pushes the bottom portion 2a of the hole 2 inside the insertion hole b, so that the insulator 1 is pulled in from the inside, not from the outside. As compared with the case where the insulator 1 is pushed in from the outside, the insulator 1 is relatively smoothly elastically deformed and drawn into the bag structure portion a.

The portion of the insulator 1 that has entered the bag structure portion a is gradually elastically restored to change its shape in accordance with the shape of the inner wall surface of the bag structure portion a, and the rod-shaped portion 6 is also somewhat elastic in response to it. Entering into the depths with bending deformation,
When the entire insulator 1 enters the inside of the insertion hole b and the inside of the insulator 1 is filled in the bag structure portion a, as shown in FIG. 1D, the engaging claw portion 5 is inserted into the insertion hole b.
The cap portion 4 is fixed to a state in which the insertion hole b is closed by being fitted and engaged with the inner peripheral portion of the insertion hole b and joined to the outer peripheral edge portion of the insertion hole b.

The size of the insertion hole b is the same as that of the insulator 1.
Since the cross-sectional area of the insulator 1 is smaller than that of the insulator 1, first, the outer periphery of the insulator 1 is pressed by hand and elastically deformed to reduce the diameter, and the insulator 1 is inserted into the insert hole b. When the cap 6 is pushed after the contact portion between the flange portion 6a at the tip of the rod-shaped portion 6 and the bottom portion 2a of the hole 2 is positioned inside the insertion hole b by inserting, the insulator filling work becomes easier. .

In this way, the filling of the insulator 1 in the fitting process can be performed very easily and easily, and the filling work of the insulator and the closing work of the insertion hole can be completed at the same time by one action, so that the working efficiency is remarkable. Can be improved. Further, since the insulator filling work is performed in the fitting process after the painting process is completed, there is no area where the paint does not adhere, and there is no problem in terms of rust prevention.

A rear seat belt 9 for a rear seat occupant is mounted on the inner side of the front side of the rear wheel arch portion 10. When mounting the rear seat belt 9 in the outfitting process, a harness or a trunk passing near the rear seat belt 9 is attached. Care must be taken not to damage the cable of the lid opener. In such a case, if a clamp-shaped holder portion 7 is integrally provided on the cap portion 4 of the cap body 3 as in the above-described embodiment, the holder portion 7 collectively clamps harnesses, cables and the like passing thereabout. By doing so, there is no risk of damaging the harness, cables, etc. when mounting the rear seat belt 9, and the rear seat belt mounting work can be facilitated.
It is very convenient. However, in the present invention, the clamp-shaped holder portion 7 is not always necessary and may be omitted.

In the above embodiment, the rear wheel arch portion 10
Although an example is shown in which the bag structure portion on the front side is filled with the insulator, the present invention is applicable to filling the bag structure portion with an insulator other than the above. Further, in the illustrated embodiment, an example is shown in which a substantially circular flange portion 6a is formed at the tip of the rod-shaped portion 6 and the hole 2 of the insulator 1 is a round hole that substantially fits the flange portion 6a.
The shape of “a” and the cross-sectional shape of the hole 2 that is substantially compatible with the shape of “a” are not limited to a substantially circular shape, and any shape can be adopted. Further, the flange portion 6a is omitted, and the bottom portion 2 of the hole 2 is formed by the tip surface of the rod-shaped portion 6.
Alternatively, a may be directly pressed.

[0021]

As described above, according to the present invention, it is possible to extremely easily and easily fill the inside of the vehicle body bag structure portion with the insulator in the fitting process, and to improve the workability of filling the insulator and to prevent rust. It is possible to achieve both securing and securing, and in combination with the fact that the structure of the insulator assembly composed of the combination of the insulator and the cap body used in the present invention is simple and the cost is low, it has a great effect in practical use. Can be brought about.

[Brief description of drawings]

1 shows an embodiment of the present invention, (A) is an exploded perspective view of an insulator assembly used in the present invention, (B).
Is a side view of the vehicle body showing a portion to be filled with the insulator, and (C) is a sectional view taken along the line BB of (B), showing a state in the middle of filling the insulator. (D) is a cross-sectional view showing a completed state of filling the insulator.

2A and 2B are cross-sectional views illustrating an example of a conventional insulator filling method.

FIG. 3 is a cross-sectional view illustrating another example of a conventional insulator filling method.

[Explanation of symbols]

 a Bag structure part b Insert hole 1 Insulator 2 Hole 2a Bottom part 3 Cap body 4 Cap part 5 Engaging claw part 6 Rod part 6a Flange part 7 Holder part 8 Insulator assembly 10 Rear wheel arch part 11 Rear quarter panel inner 12 Rear Quarter panel outer 13 rear wheel apron

Claims (3)

[Claims] 1. An insulator made of a foamed resin material having a cross-sectional area larger than an opening area of the insertion hole is press-fitted from an insertion hole provided in a part of a wall portion of the bag structure portion of the vehicle body to insert the inside of the bag structure portion. In the case of filling with an insulator, the insulator is provided with a hole extending from the base end surface to the vicinity of the tip end surface, a rod-shaped portion is projected on a cap that closes the insertion hole, and the rod-shaped portion is fitted into the hole of the insulator. With the tip end surface of the rod-shaped part in contact with the bottom part of the hole, press the insulator tip part through the insertion hole, and then press the cap to insert the tip end part of the rod-shaped part into the bottom part of the hole. The insulator is pulled into the bag structure from the inside of the insertion hole by pressing inside the hole, and when the entire insulator enters the bag structure and fills the inside of the bag structure, the cap closes the insertion hole. Become A method for filling an insulator into a bag structure portion of a vehicle body, comprising: 2. An insulator made of a foamed resin material which is press-fitted through an insertion hole provided in a part of a wall portion of a bag structure portion of a vehicle body to fill the inside of the bag structure portion, and the insertion hole is closed after the insulator is press-fitted. An insulator assembly including a cap body for closing the insertion hole, the insulator body having a hole extending from the base end surface to the vicinity of the tip end surface, and the cap body having a cap portion for closing the insertion hole and the cap portion. A plurality of engaging claws protruding from one surface and engaging the inner peripheral edge of the insertion hole to fix the cap portion in the insertion hole closed state; and from substantially the center of one surface of the cap portion. The cap body is formed as an integrally molded product of synthetic resin in a structure having a protruding rod-shaped portion, and the rod-shaped portion is inserted into a hole of an insulator and the tip end surface of the rod-shaped portion is in contact with the bottom of the hole. Insulator An insulator assembly that is combined with. 3. The insulator assembly according to claim 2, wherein a clamp-shaped holder portion for collectively clamping a harness, a cable and the like is integrally projectingly provided on the other surface of the cap portion of the cap body. An insulator assembly characterized by the above.