JP6887784B2 - Door hole seal and its manufacturing method - Google Patents

Description

The present invention relates to a door hole seal attached to the inside of a door inner panel via a synthetic resin film and to which a flap covering a harness through hole is welded, and a method for manufacturing the door hole seal.

As shown in FIGS. 6 and 7, conventionally, the door 100 of an automobile is covered with the opening H formed in the door inner panel 102 constituting the door outer panel 101, and the soundproofing measures and waterproofness inside the door 100 are taken. In some cases, a door hole seal 10 is provided between the door inner panel 102 and the door trim 103 for securing. The door hole seal 10 is attached to the inside of the vehicle inside the door inner panel 102.

The door hole seal 10 has a PE (polyethylene) film 12 integrated with the seat body 11, and the seat body 11 is made of a highly foamed sponge rubber sheet. The sheet main body 11 has not only a single-layer structure but also a multi-layer structure such as two layers and three layers. Further, a butyl rubber sealant 13 is provided as an adhesive on the outer surface of the PE film 12 so that the door hole seal 10 is fixed to the door inner panel 102.

Further, the seat body 11 is formed with a through hole 20 for penetrating the wire harness 200 for supplying electricity to the inside of the door 100.
Examples of such a through hole 20 include a punched hole and a slit mechanism that penetrate the seat body 11 inside and outside the vehicle, and a combination thereof. Then, it is known that a flap 30 for covering these through openings 20 is provided on the outer side of the seat main body 11 (for example, Patent Document 1). The flap 30 prevents the water flowing down from above the seat body 11 from reaching the through hole 20.

Japanese Unexamined Patent Publication No. 2009-51459

As shown in FIG. 7, such a flap 30 is provided on the outside of the vehicle of the seat body 11, and none of the flaps 30 is provided on the inside of the vehicle of the seat body 11.
If the flap 30 is set inside the vehicle of the seat body 11, it is necessary to prevent water from entering the inside of the vehicle from the outside of the seat body 11, so that the flap 30 is purposely used for the seat body 11. There was no idea to set it inside the car.

However, there are cases where the flap 30 is welded and attached from the inside of the vehicle body 11 to improve work efficiency and can reduce the cost as compared with the case where the flap 30 is attached from the outside of the vehicle.

Therefore, an object of the present invention is to provide a door hole seal and a method for manufacturing the same, which are advantageous in terms of cost while preventing water from entering the inside of the vehicle.

In order to achieve the above object, in the door hole seal of the present invention, the seat body portion (51) is attached to the inside of the door inner panel (102) via the synthetic resin film (52), and the door inner panel is said. A door hole seal (50) with a flap (70) welded to cover the opening (H) formed in (102) and to cover the harness through hole (60) formed in the seat body (51). There,
The flap (70) has a bag shape with the upper part open and the lower part closed, and is installed inside the vehicle of the seat body (51) .
The harness through hole (60) is composed of a slit (63) connecting the upper first hole (61), the lower second hole (62) and both holes (61, 62).
The flap (70) is characterized in that the lower side has a tapered shape .

Further, in the present invention , the seat body portion (51) is attached to the inside of the door inner panel (102) via the synthetic resin film (52), and the opening (H) formed in the door inner panel (102) is formed. A door hole seal (50) in which a flap (70) is welded to cover the harness through-hole (60) formed in the seat body (51).
The flap (70) has a bag shape with the upper part open and the lower part closed, and is installed inside the vehicle of the seat body (51).
The harness through hole (60) is composed of a slit (63) connecting the upper first hole (61), the lower second hole (62) and both holes (61, 62).
The flap (70) is characterized in that the lower side has a tapered shape.

Further, the present invention is characterized in that the second hole (62) has an elliptical shape elongated in the vertical direction.

Further, the present invention is characterized in that a plurality of cuts (65) penetrating the sheet main body portion (51) are formed around the lower end of the second hole (62).

Further, the present invention is characterized in that the lower end (65a) of the plurality of cuts (65) is formed so as to reach a welding line (L1) formed by welding the lower portion of the flap (70).

Further, in the present invention, one end (52a) side of the synthetic resin film (52) is fixed to the inside of the vehicle of the seat body (51), and the other end (52b) side is inside the vehicle of the door inner panel (102). The flap (70) is integrated with the synthetic resin film (52).

Further, in the method for manufacturing a door hole seal of the present invention, a seat body portion (51) is attached to the inside of a door inner panel (102) via a synthetic resin film (52) and formed on the door inner panel (102). A flap (70) covering the harness through-hole (60) formed in the sheet body (51) is welded to cover the opened opening (H), and one end (52a) of the synthetic resin film (52) is welded. The side is fixed to the inside of the vehicle of the seat body (51), the other end (52b) side is fixed to the inside of the door inner panel (102), and the flap (70) is the composite. A method for manufacturing a door hole seal integrated with a resin film (52).
The synthetic resin film (52) with the flap (70) integrated is attached to the inside of the vehicle of the seat body (51) by one welding.

The symbols in parentheses indicate the corresponding elements or corresponding items described in the drawings and the mode for carrying out the invention described later.

According to the present invention, when water enters the inside of the vehicle from the outside of the vehicle through the wire harness inserted into the through hole of the harness, the water falls into the bag-shaped flap and collects at the bottom. However, it is discharged to the outside of the vehicle through a harness through hole consisting of holes and slits.
Therefore, even if a flap covering the harness through hole is provided inside the vehicle of the seat body, there is no concern about water leakage.

Further, since the harness through hole is composed of a slit connecting the upper first hole, the lower second hole and both holes, it is possible to maintain the discharging function while holding the inserted wire harness in the second hole. In addition, it is easy to collect water by making the underside of the flap tapered.
Further, by forming a plurality of cuts penetrating the sheet main body around the lower end of the second hole, discharge can be performed more easily and smoothly. In particular, it is more preferable to form the lower ends of the plurality of cuts so as to reach the welding line at the lower part of the flap because the water accumulated in the welding line can be smoothly discharged to the outside of the vehicle.

Further, according to the present invention, since the synthetic resin film provided inside the vehicle of the seat body and the flap are integrated, it can be attached to the seat body by one (one) welding work, and the work efficiency is improved. Good.

Further, according to the present invention, by fixing the synthetic resin film to the inside of the vehicle of the seat body, the outside of the seat body can be brought into contact with the inside of the door inner panel. The seat body can be brought into close contact with the door inner panel without any gaps.
According to this, it is possible to efficiently and surely receive and absorb sound on the entire surface of the seat body without letting the sound incident on the inside of the vehicle pass through the opening formed in the door inner panel from the outside of the vehicle. , The soundproofing function of the door hole seal can be maximized.
Further, as compared with the case where the synthetic resin film is fixed to the outside of the vehicle of the seat body, the area of the synthetic resin film is suppressed around the opening, so that the synthetic resin film vibrates, resulting in a so-called chattering sound. The generation of abnormal noise is also prevented.

FIG. 6 is an enlarged cross-sectional view taken along line AA of FIG. 6 showing a state in which the door hole seal according to the embodiment of the present invention is attached. It is an enlarged side view which shows the structure around the flap of the door hole seal shown in FIG. It is an enlarged side view of the seat main body part of the door hole seal shown in FIG. It is an enlarged side view of the synthetic resin film with the flap of the door hole seal shown in FIG. It is an enlarged side view of the state which the synthetic resin film with a flap is attached to the seat main body part of the door hole seal shown in FIG. It is an external side view of an automobile. FIG. 6 is an enlarged cross-sectional view taken along the line AA of FIG. 6 showing a state in which the door hole seal according to the conventional example is attached.

The door hole seal 50 according to the embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 6, the door hole seal 50 is provided between the door inner panel 102 and the door trim 103, and covers the opening H formed in the door inner panel 102.

Further, the door hole seal 50 is integrated with the seat body 51 having excellent soundproofing and sound absorbing properties and the seat body 51, and the seat body 51 is attached to the inside of the car of the door inner panel 102 from the synthetic resin film 52. Become.
A flap 70 is welded to the inside of the vehicle of the seat body 51 to cover the harness through hole 60 formed in the seat body 51 from the inside of the vehicle.

As shown in FIG. 3, the sheet main body 51 has a substantially elliptical shape (which may be substantially rectangular) that is long in the lateral direction, and a soundproof sheet material made of a highly foamed rubber-like elastic body or a resin fiber body is used. Be done. The outside of the seat body 51 is in contact with the inside of the door inner panel 102.
Examples of the highly foamed rubber-like elastic body include synthetic rubbers such as EPDM, CR, SBR, and NBR, and elastomers. Further, as the seat body 51, a so-called NI sheet in which a closed cell layer and an open cell layer are laminated (two layers or more) can be used, but it is better to use a single layer (one layer) on the outside of the vehicle. It is preferable that the sound incident on the inside of the vehicle and the sound emitted from the inside of the vehicle to the outside of the vehicle are equally corresponding to each other and exhibit the same sound absorption characteristics, and that the sound absorption effect on one sound is significantly inferior. Further, skin layers may be formed on both the outer side of the vehicle and the inner side of the seat body 51.
Further, the uneven portion may be formed on one side of the outer side of the vehicle of the seat body portion 51.
In this embodiment, an EPDM sponge rubber sheet having a specific gravity of 0.1 or less was used as the sheet body 51.

The harness through hole 60 formed in the seat body 51 is composed of a slit 63 connecting the upper first hole 61, the lower second hole 62, and both holes 61, 62. Then, a plurality of (three in this case) cuts 65 penetrating the sheet main body 51 are formed around the lower end of the second hole 62. The cut 65 does not have to communicate with the second hole 62 as long as it is around the lower end of the second hole 62, but here, three cuts 65 communicating from the lower end of the second hole 62 are formed.
The first hole 61 has a substantially circular shape, and the second hole 62 has a substantially elliptical shape that is long in the vertical (vertical) direction. The first hole 61, the second hole 62, the slit 63, and the cut 65 constituting the harness through hole 60 are punched out so as to penetrate the seat body 51 inside and outside the vehicle, and here, the inside of the automobile door 100 is formed. A wire harness 200 for supplying electricity to the door is inserted.

The synthetic resin film 52 is made of, for example, a PE (polyethylene) film, and is considerably thinner than the thickness of the sheet body 51. The synthetic resin film 52 may be any as long as the seat body 51 can be stably attached to the inside of the door inner panel 102, and instead of the PE (polyethylene) film, PP (polypropylene) or EVA resin (ethylene). -Vinyl acetate copolymer resin) can also be used.

As shown in FIG. 4, the synthetic resin film 52 has an annular shape along the shape of the sheet main body 51, and as shown in FIG. 1, one end 52a, which is the inner side thereof, is the outer peripheral edge of the sheet main body 51. The other end 52b side, which is the outer side of the synthetic resin film 52 and is fixed to the inside of the car by welding, is fixed to the inside of the car of the door inner panel 102 by a butyl rubber sealant 53 (shown in black).

The flap 70 is integrated with the synthetic resin film 52, and the material of the flap 70 is the same as that of the synthetic resin film 52.
The flap 70 is welded in a bag shape to the lining 103A side (inside the vehicle) surface of the seat body 51 with the upper part open and the lower part closed. As shown in FIG. 2, the lower side of the flap 70 is set to have a tapered shape and an acute angle, and has an overall shape like a home base. The wire harness 200 is placed between the upper surface 70a, which is the open end surface of the flap 70, and the seat body 51, and the seat body 51 between the seat body 51 and the second hole 62 below the upper surface 70a. Communicating.

The lower part of the flap 70 is continuously welded to the surface of the seat body 51 side (outside the vehicle) in a substantially V shape without a gap, and the welding width t1 of the welding line L1 is formed. Although not particularly limited, it is set to 5 mm here. It is preferable that the lower end 65a of the three cuts 65 reaches the welding line L1 formed by welding the lower part of the flap 70.

According to this, when water enters the lining 103A side (inside the vehicle) from the outside of the vehicle through the wire harness 200 over the seat body 51, the water falls into the bag-shaped flap 70 and collects at the bottom. Is discharged to the outside of the vehicle through the second hole 62 and the cut 65 punched inside the vehicle.
Therefore, even if the flap 70 that covers the harness through hole 60 is provided inside the vehicle of the seat body portion 11, there is no concern about water leakage.

Further, it is horizontally continuous without a gap even above the upper surface 70a which is the open end surface of the flap 70, that is, the surface of the connecting portion 75 between the synthetic resin film 51 and the flap 70 on the seat body 51 side (outside the vehicle). It is welded. ..
By providing the welding line L2 on the connecting portion 75 located above the flap 70 in this way, the holding force of the flap 70 is strengthened, so that the flap 70 can be provided in a stable state with respect to the seat body portion 51.

Further, as shown in FIG. 5, one end 52a of the synthetic resin film 52 is welded to the inside of the vehicle on the outer peripheral edge of the seat body 51 rather than surrounding the outer peripheral edge.
The welding lines L1, L2, and L3 are shown by diagonal lines in FIG. 2 and shown in black in FIGS. 1 and 5.

In the manufacture of the door hole seal 50, the synthetic resin film 52 is attached to the seat body 51 with respect to the side surface (FIG. 3) of the seat body 51 inside the vehicle, as shown in FIGS. 3 to 5. The synthetic resin film 52 (FIG. 4) in which the flap 70 is integrated can be attached by one welding.
Therefore, the door hole seal 50 can be manufactured in a short time, and the cost can be significantly reduced.

Next, when 15 cc of water was injected into the flap 70, a few water droplets remained after 2 hours, but there were no water droplets after 1 day, and the water was drained from the inside of the vehicle to the outside of the vehicle by the harness through hole 60. I was able to confirm.
From the start of the experiment to 4 hours, the standard temperature was 25 ° C. (23 ± 2 ° C.) with air conditioner control, and after that, the experiment was conducted in an atmosphere without air conditioner control (20 to 30 ° C.).

In the present embodiment, the synthetic resin film 52 is fixed to the inside of the vehicle of the seat body 51 so that the outside of the seat body 51 is in contact with the inside of the door inner panel 102. Therefore, the seat body 51 can be brought into close contact with the door inner panel 102 without any gap.
According to this, the sound incident on the inside of the vehicle through the opening H formed in the door inner panel 102 from the outside of the vehicle is efficiently and reliably received and absorbed by the entire surface of the seat of the seat body 51 without escaping the sound. This makes it possible to maximize the soundproofing function of the door hole seal 50.
Further, as compared with the case where the synthetic resin film 52 is fixed to the outside of the vehicle of the seat body 51, the area of the synthetic resin film 52 is suppressed around the opening H, so that the synthetic resin film 52 vibrates. , So-called chattering noise is also prevented.

When the synthetic resin film 52 is fixed to the inside of the vehicle of the seat body 51 in this way, if the flap 70 is provided inside the vehicle of the seat body 51 in the same manner as the synthetic resin film 52, the seat body 51 will not be turned over. The synthetic resin film 52 and the flap 70 can be welded without any problem.
In particular, when the synthetic resin film 52 and the flap 70 are integrated as in the present embodiment, the flap 70 can be attached by welding once (once), and the flap 70 can be attached to the inside of the vehicle of the seat body 51. Even if it is provided, the waterproof function can be maintained, so it is extremely effective, and the effect is enormous.

As described above, in the present embodiment, the synthetic resin film 52 and the flap 70 are integrated, but can be separated. Further, in terms of welding, it is necessary to turn over the seat body 51, which is complicated. However, as shown in FIG. 7, the synthetic resin film 52 is provided on the outside of the seat body 51, and the flap 70 is on the opposite side. It is also possible to provide the seat body portion 51 inside the vehicle.

Further, in the present embodiment, the lower side of the flap 70 is made thin and tapered, and a plurality of cuts 65 are formed at the lower end of the second hole to collect the water that has entered the inside of the vehicle and efficiently collect the water on the outside of the vehicle. However, the seat body 11 may be configured to hold the wire harness 200 and provide holes and slits penetrating inside and outside the vehicle.

10 Door hole seal 11 Sheet body 12 PE film 13 Butyl rubber sealant 20 Throughout 30 Flap 50 Door hole seal 51 Sheet body 52 PE film (synthetic resin film)
52a One end 52b The other end 53 Butyl rubber sealant (adhesive)
60 Harness through hole 61 1st hole 62 2nd hole 63 Slit 65 Cut 65a Lower end 70 Flap 70a Upper surface 75 Connection part 100 Door 101 Door outer panel 102 Door inner panel 103 Door trim 103A Lining 200 Wire harness H opening L1, L2, L3 Welding line t1, t2, t3 Welding width

Claims (7)

The seat body is attached to the inside of the door inner panel via a synthetic resin film to cover the opening formed in the door inner panel, and the flap covering the harness through hole formed in the seat body is welded. It is a door hole seal that has been made
The flap has a bag shape with the upper part open and the lower part closed, and is installed inside the vehicle of the seat body .
The harness through hole is composed of a slit connecting the first hole on the upper side, the second hole on the lower side, and both holes.
The flap is a door hole seal characterized in that the lower side has a tapered shape. The seat body is attached to the inside of the door inner panel via a synthetic resin film to cover the opening formed in the door inner panel, and the flap covering the harness through hole formed in the seat body is welded. It is a door hole seal that has been made
The flap has a bag shape with the upper part open and the lower part closed, and is installed inside the vehicle of the seat body.
The harness through hole is composed of a slit connecting the first hole on the upper side, the second hole on the lower side, and both holes.
The flap is a door hole seal characterized in that the lower side has a tapered shape. The door hole seal according to claim 1 or 2, wherein the second hole has an elliptical shape that is elongated vertically. The door hole seal according to any one of claims 1 to 3 , wherein a plurality of cuts penetrating the sheet main body are formed around the lower end of the second hole. The door hole seal according to claim 4 , wherein the lower ends of the plurality of cuts are formed so as to reach a welding line formed by welding the lower portion of the flap. One end side of the synthetic resin film is fixed to the inside of the car of the seat body portion, and the other end side is fixed to the inside of the car of the door inner panel, and the flap is integrated with the synthetic resin film. The door hole seal according to any one of claims 1 to 5, wherein the door hole seal is made of. The seat body is attached to the inside of the door inner panel via a synthetic resin film to cover the opening formed in the door inner panel, and the flap covering the harness through hole formed in the seat body is welded. One end side of the synthetic resin film is fixed to the inside of the car of the seat body portion, and the other end side is fixed to the inside of the car of the door inner panel, and the flap is integrated with the synthetic resin film. It is a method of manufacturing a door hole seal that has been made into plastic.
A method for manufacturing a door hole seal, which comprises attaching the synthetic resin film having the flap integrated to the inside of the vehicle of the seat body by one welding.

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