JP2001171354A - Vehicle door - Google Patents

Abstract

(57) [Problem] To provide a vehicle door having a resin door panel ensuring predetermined rigidity. SOLUTION: An outer panel 11 has a first panel portion 12 and a claw portion 15, and a predetermined portion of an outer periphery of a resin-made second panel portion 17 of an inner panel 16 is fixed to a claw portion 1 of the outer panel 11.
5. A vehicle door 10 locked to 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a vehicle door.
More specifically, the present invention relates to a vehicle door having at least an inner panel made of resin.

[0002]

2. Description of the Related Art Generally, a vehicle door has a door body in which an outer panel and an inner panel which is disposed inside the vehicle and faces the inner panel to form a space therebetween are welded or the like. Usually, the outer panel and the inner panel are steel plate pressed products. In the space inside the door body, door fittings such as electric components and window glass plates are stored.

The outer panel has a dish-shaped or substantially flat plate-shaped first panel portion which becomes an outer plate of the vehicle body when mounted on the vehicle body. On the other hand, the inner panel has a dish-shaped or substantially flat second panel portion facing the first panel portion of the outer panel, and a maintenance hole is provided in the second panel portion. A waterproof seat that closes a maintenance hole to prevent rainwater from entering the vehicle is mounted on the inner side surface of the inner panel, and a trim that is an interior that a passenger can see is mounted from above.

In recent years, there has been a tendency for automobile parts to be made of resin, and the resinization of vehicle bodies is also becoming widespread. "Recent trend of resinization of automotive parts and corresponding technologies as engineering plastic material maker" (Plastic Technology Research Group '9
9.2.18. Lecture text. In the following, "lecture lecture text") introduces a vehicle that employs a resin door panel (outer panel, inner panel). In the lecture text, as an advantage of resin body,
Light weight (use of low specific gravity material, design of integrated parts),
System cost reduction (modularization, component integration,
Assembly time), damageability (deformation at low speed collision),
Design freedom (functional integration, model differentiation),
And the like.

[0005]

A door panel made of a resin has a lower rigidity and a larger thermal expansion coefficient than a conventional door panel made of a steel plate. Reinforcement is required. Therefore, it is conceivable to increase the thickness of the resin door panel entirely or partially or to reinforce the resin door panel with a metal member for reinforcement, but these hinder the weight reduction. Would. Lecture texts show that glass and carbon fiber reinforcement is effective. However, even with a door having such a reinforced resin door panel, there is room for improvement in rigidity.

Recently, in view of recycling of door panels and door fittings, there has been a demand for the development of a door which can be easily disassembled.

The present invention has been made based on the above background, and an object of the present invention is to improve the rigidity without hindering the weight reduction and to facilitate the disassembly of the door.
An object of the present invention is to provide a vehicle door having a resin door panel.

[0008]

In order to achieve the above-mentioned object, the present invention comprises at least an outer panel and an inner panel which is attached to the inner side of the outer panel and forms a space therebetween. In the vehicle door, the outer panel has a first panel portion serving as a vehicle body outer plate when attached to the vehicle body, and a claw portion provided at a predetermined peripheral portion of the first panel portion. The claw portion has a resin-made second panel portion whose outer peripheral predetermined portion is locked to the first panel portion, and a projected area of the second panel portion is attached to the outer panel. A vehicle door, wherein the projection area is equal to or less than the projected area of the second panel portion before being locked by the claw portion.

The claw portion may be one that continuously projects from the peripheral edge of the first panel portion of the outer panel toward the inner peripheral direction, or a plurality of portions that are spaced apart in the circumferential direction of the first panel portion. Those that protrude toward the inner peripheral direction can be adopted. It is preferable that the projected area of the second panel portion at which the outer peripheral predetermined portion is locked is smaller than the projected area of the second panel portion before being attached to the outer panel and locked by the claw portion. That is, it is preferable that the second panel portion is bent and is hardly bent further.

In the vehicle door as described above, a predetermined portion of the outer periphery of the second panel portion of the resin inner panel is inserted between the first panel portion of the outer panel and the claw portion to be restrained. Therefore, the second panel portion is hardly bent. Further, when the second panel portion is bent, a stress for bending the first panel portion acts on the outer panel due to the restoring force of the second panel portion, and the first panel portion is further bent. Make it difficult. Therefore, the rigidity of the door is improved without increasing the thickness of the door panel, which hinders weight reduction, and without attaching a separate reinforcing member. Also, since welding or the like is not used, the work of attaching and detaching the inner panel to and from the outer panel can be easily performed. Therefore, it is suitable for recycling.

In the vehicle door of the present invention, when the outer panel is attached to a vehicle body, the outer panel has an upper side, a lower side, and a plurality of sides which form a pair of side sides connecting both ends of the upper side and the lower side, At least one of the sides is formed as an insertion portion not having the claw portion, and the inner panel has the first panel portion and the claw portion along the surface direction of the first panel portion via the insertion portion. It is preferable to be configured to be inserted between them. According to such a vehicle door, the work of attaching and detaching the inner panel to and from the outer panel can be performed more easily.

Further, in the vehicle door of the present invention, it is preferable that the upper side is formed as the insertion portion. According to such a vehicle door, a high mount stop lamp, a spoiler, and the like can be attached to the insertion portion,
A wide variety of door configurations can be provided.

Further, in order to achieve the above-mentioned object, the present invention provides a vehicle door having at least an outer panel and an inner panel attached to the inner side of the outer panel to form a space therebetween. The outer panel has a first panel portion serving as a vehicle body outer plate when attached to the vehicle body, and a claw portion provided at a predetermined peripheral portion of the first panel portion, and the inner panel is provided on the first panel portion. A second panel portion made of resin is provided such that a predetermined portion of the outer periphery thereof is locked to the claw portion so as to face each other, and a part of the predetermined portion of the outer periphery of the second panel portion is related to a portion of the claw portion. After the second panel portion is bent while being stopped, the vehicle door is characterized in that all of the predetermined portions on the outer periphery of the second panel portion are locked with the claw portions.

In the vehicle door as described above, a predetermined portion of the outer periphery of the second panel portion of the inner panel is locked and restrained by the claw portion of the outer panel, so that the inner panel is less likely to bend. Rigidity has been improved. In addition, since the work of attaching and detaching the inner panel to and from the outer panel can be easily performed, it is suitable for recycling.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a back door for a vehicle (hereinafter referred to as a “tailgate”) according to a first embodiment of the present invention.
FIG. 2 is an exploded perspective view of the tailgate shown in FIG. 1, FIG. 3 is a sectional view taken along the line III-III in FIG. 1, FIG. 4 is a sectional view taken along the line IV-IV in FIG. FIG. 5 is a sectional view taken along line VV in FIG. 1.

As shown in FIG. 1, the tailgate 10
An outer panel 11 made of resin is provided, and an inner panel 16 made of resin attached to the inner side of the outer panel 11 (on the front side with respect to the paper surface in the drawing). Outer panel 1
The material of the inner panel 1 and the inner panel is not limited as long as it is a resin. For example, as the material of the outer panel 11, a material containing polyphenylene oxide and a polyamide resin having good weather resistance can be adopted. Further, as a material of the inner panel 16, a material that can secure a predetermined rigidity and includes glass fiber (for example, 40% glass fiber) and polypropylene can be adopted. The inner panel 16 has a space 3 between the inner panel 16 and the outer panel 11.
1 is attached to the outer panel 11. Appropriate door fittings such as a wiper motor 32 and a wire harness (not shown) are arranged in the space 31. Here, illustration of the trim and the wiper is omitted.

The outer panel 11 has a first panel portion 12 and a claw portion 15. The first panel portion 12 is formed in a three-dimensionally curved plate shape (dish shape) that becomes a vehicle body outer plate when attached to a vehicle body (not shown). The claw portion 15 is formed continuously along both sides 12a and 12b and a lower side 12d of the first panel portion 12 so as to protrude in the inner circumferential direction of the first panel portion 12. Here, the claw portion 1 is provided on the upper side 12c of the first panel portion 12.
5 is not provided. Note that the upper side 12c of the first panel portion 12 refers to a side along the roof of the vehicle when attached to the vehicle body, and the side edges 12a and 12b of the first panel portion are ends of the upper side 12c of the first panel portion. And the lower side 12d. The inner panel 16 includes the outer panel 11.
Has a dish-shaped second panel portion 17 attached to the inside of the vehicle in opposition to the first panel portion 12. Here, a maintenance hole is not provided in the second panel section 17,
The second panel portion 17 is a non-water-permeable plate that does not allow water to pass through. Upper edge 12 of first panel portion 12 of outer panel 11
The opening defined by c, the upper end of the claw portion 15, and the upper side 17 c of the second panel portion 17 of the inner panel 16 is closed by a resin lid panel 21.

Here, both sides 12a and 12b of the first panel portion 12 of the outer panel 11 have cutouts 12e on the lower side 12d side, and the tail lamp provided on the vehicle body when the outer panel 11 is mounted on the vehicle body. It can be exposed to the outside of the car. The side edges 12a and 12b are parallel to each other in a portion other than the cutout portion 12e in a side view shown in FIG. First panel portion 12 of outer panel 11
Has a rectangular window opening 13 on the upper side 12c side. The window opening 13 is closed by a window member 30 which is a glass plate. The second panel portion 17 of the inner panel 16 has a window notch 18 formed on an upper side 17C. The both sides and the lower side of the window notch 18 overlap the both sides and the lower side of the window opening 13 of the first panel portion 12 in a side view shown in FIG.

As shown in FIG. 2, around the window opening 13 in the first panel portion 12 of the outer panel 11, a seal member 14a for supporting the window member 30 is provided. Further, a stopper 14b is provided around the seal member 14a, which is a ridge that prevents the window member 30 from shifting. An upper side 12 c of the first panel portion 12 is an insertion portion 20 having no claw portion 15. Although not shown, the first panel portion 12 of the outer panel 11 includes the inner panel 1.
Before the attachment of the door 6, predetermined door fitting parts such as a license garnish and a license light are attached in advance.

The first panel portion 12 has a curved shape in which the center in the width direction swells toward the outside of the vehicle. The claws 15 are provided on both sides 12 a and 12 b and the lower side 12 of the first panel 12.
d. The claw portions 15 and 15b provided on both side edges 12a and 12b protrude toward the center in the width direction of the first panel portion 12. The claw portion 15d provided on the lower side 12d protrudes toward the center in the height direction of the first panel portion 12.

A seal member 19a for supporting the window member 30 is also provided around the window notch 18 on the vehicle outer surface of the second panel portion 17 of the inner panel 16.
(See FIG. 5). The second panel portion 17 also has a curved shape in which the central portion in the width direction swells to the outside of the vehicle. Second panel part 1
7 have notches 17e corresponding to the notches 12e of the first panel portion 12. The side edges 17a and 17b are parallel to each other in a portion other than the cutout portion 17e in a side view. Before being attached to the outer panel 11, the first panel portion 17 of the inner panel 16 is provided with a wiper motor 32, a predetermined door fitting component such as a hinge (not shown), a high mount stop lamp, an inside handle, a lock, and a wire harness. Install it.

Here, the side 1 of the second panel 17 is provided between the first panel 12 and the claws 15a, 15b provided on the sides 12a, 12b of the first panel 12.
The distance W1 between the sides of the second panel portion 17 when the 7a and 17b are inserted is set to be shorter than the distance W2 between the sides of the second panel portion 17 before being attached to the outer panel 11. In this case, the distance W1 between the side sides is determined by the claw portions 15 provided on the side sides 12a and 12b of the first panel portion 12.
a, 15b are substantially equal to the longest distance between the inner surfaces.

As shown in FIG. 3, the second panel portion 17 attached to the outer panel 11 is more curved than the second panel portion 17 indicated by the imaginary line in the figure before being attached to the outer panel 11. . Therefore, a restoring force is generated in the second panel portion 17 attached to the outer panel 11 so as to return to the shape before being attached to the outer panel 11. Then, the restoring force acts to bend the first panel portion 12 of the outer panel 11. That is, here, the second panel portion 17 is formed so as to reduce the degree of curvature of the first panel portion 12 which is curved so that the central portion in the width direction protrudes outside the vehicle, in other words, to increase the radius of curvature. Restoring force is acting. The window member 30 is formed of a sealing material 14 a provided on the first panel 12.
And the sealing member 19 a provided in the second panel portion 17, so that the window opening 13 is closed.

As shown in FIG. 4, the lower side 17d of the second panel section 17 is formed by the first panel section 12 and the first panel section 12 thereof.
Is inserted between the claw portion 15d provided on the lower side. In a space 31 defined between the first panel section 12 and the second panel section 17, door fitting parts such as a wiper motor 32 are arranged. The window member 30 includes the first panel 1
2 and a sealing member 19a provided in the second panel portion 17 so as to be tightly held therebetween, so that rainwater or the like does not enter the space 31.

As shown in FIG. 5, the lid panel 21 has a substantially U-shaped cross section. The cover panel 21 includes the window member 30.
It has a vehicle interior side wall 21a disposed further inside the vehicle.
An outer side wall 21b disposed outside the window member 30 from the window member 30 is connected to an upper side of the inner side wall 21a via a curved connecting portion 21c. Here, the inner side wall 21a, the outer side wall 2
1b and the curved connecting portion 21c are integrally formed.
The sealing material 2 that sandwiches the window member 30 together with the sealing material 14a provided in the first panel portion 12 is provided on the vehicle inner side wall 21a.
4a is provided. Here, the upper side 12c of the first panel portion 12 of the outer panel is inserted between the inner side wall 21a of the lid panel 21 and the outer side wall 21b. The vehicle outer wall 21b protrudes from the outer surface of the first panel portion 12, and serves as a spoiler.

Hereinafter, an assembling method according to this embodiment will be described with reference to FIG. First, the window member 30 is attached to the outer panel 11. Next, while further bending the second panel portion 17 of the inner panel 16 whose central portion in the width direction bulges outwards, the lower side 17 of the second panel portion 17 is bent.
d is inserted into the insertion portion 20 of the outer panel 11 and pushed in. At this time, the side 17a of the second panel portion 17,
17b is the inner surface of the first panel portion 12 and the claw portions 15a, 15
b, and fits into the groove formed by the inner surface and slides in the groove. And the lower side 17 of the second panel portion 17
d is a claw portion 1 provided on a lower side 12d of the first panel portion 12.
The pressing of the second panel portion 17 is stopped when the second panel portion 17 comes into contact with the inner surface of 5d. Finally, the lid panel 21 is put on the upper sides 12c, 17c of the first panel portion 12 and the second panel portion 17.

According to the tailgate 10 described above,
In a state where the second panel portion 17 of the inner panel 16 made of resin is bent, both sides 17a, 17 of the second panel portion 17 are provided.
b and the lower side 17d are inserted and restrained between the first panel portion 12 of the outer panel 11 and the claw portions 15a, 15b, 15c. As a result, the second panel portion 17 is less likely to bend, and the restoring force of the second panel portion 17 acts on the outer panel 11 to cause the first panel portion 12 to bend. It is difficult to bend the portion 12 further. Therefore, the rigidity of the tailgate 10 is improved. In addition, since welding or the like is not used, the work of attaching and detaching the inner panel 16 to and from the outer panel 17 can be easily performed. Therefore,
Suitable for recycling.

The tail gate 10 has an upper portion 12 c of the first panel portion 12 of the outer panel 11 formed as an insertion portion 20 having no claw portion 15, and the inner panel 16 is connected to the first panel portion 12 via the insertion portion 20. And the claw portion 15. Therefore, the work of attaching and detaching the inner panel 16 to and from the outer panel 11 can be easily performed.

The tailgate 10 has an opening defined by an upper edge 12c of the first panel portion 12, an upper edge of the claw portion 15, and an upper edge 17c of the second panel portion 17, and has a spoiler portion 21b. The panel 21 is closed. By using the lid panel 21 having a different configuration from the outer panel 11 and the inner panel 16 in this manner,
It is possible to easily change the shape of the spoiler or to provide a high-mount stop lamp on the lid panel 21, and it is possible to widen variations. Also, since the lid panel 21 is detachable, the inner panel 16
Can be more easily attached to and detached from the outer panel 11.

In the tailgate 10, a maintenance hole is not provided in the second panel portion 17, and an inner panel on which a predetermined door fitting is mounted is attached to an outer panel on which a predetermined door fitting is mounted in advance. It is composed of This eliminates the need for complicated door parts assembling work to be performed through the maintenance hole, which tends to be small, and also eliminates the need to close the maintenance hole with a waterproof in order to secure water tightness in the vehicle interior. Is simplified. Further, when the tailgate 10 is recycled, the inner panel 16 is removed from the outer panel 11,
Since the door fitting parts mounted on the inner panel 16 can be removed from the outer panel 11 at the same time, the disassembly of the door is extremely easy.

FIG. 6 shows a tailgate according to a second embodiment of the present invention. Hereinafter, members and the like having the same configuration and operation as those of the first embodiment are denoted by the same reference numerals or corresponding reference numerals in the drawings, and description thereof will be simplified or omitted.
As shown in FIG. 6, the tail gate 40 includes a resin outer panel 41 and a resin inner panel 46. Also in FIG. 6, the illustration of the trim and the wiper is omitted.

The first panel portion 42 of the outer panel 41 is
The side edges 42a and 42b are inclined so that the distance between the side edges increases toward the lower edge 42d halfway from the upper edge to the lower edge. Both sides 42a, 42b are lower sides 42d
It has a notch 42e on the side. And both sides 42
a, 42b and the claw 4 continuously along the notch 42e.
5a and 45b are provided. A claw portion may not be provided on the lower side 42d of the first panel portion 42, but a claw portion 45d is provided at the center of the lower side 42d.

The second panel portion 47 of the inner panel 46 includes:
Like the first panel portion 42, both sides are inclined toward the lower side, and have a notch on the lower side. The second panel 47 has a maintenance hole 49 at a predetermined position.
Is provided. A lid panel 51 covers the upper side of the outer panel 41 and the upper side of the inner panel 46.

Hereinafter, an assembling method according to this embodiment will be described with reference to FIGS. First, as shown in FIG. 7, a claw portion 45 b provided on one side of the first panel portion 42 of the outer panel 41 has a curved second panel portion 47 whose central portion in the width direction swells outward. One side 47b is locked. Next, as shown in FIG. 8, the other side 47 a of the second panel 47 is connected to the protruding tip of the claw 45 a provided on the other side of the first panel 42. The second panel portion 42 is further curved until the second panel portion 42 is positioned at the center in the width direction. Then, as shown in FIG. 9, both sides 47 a and 47 b of the second panel portion 47 are locked by claw portions 45 a and 45 b provided on both sides of the first panel portion 42. As shown in FIG. 9, also in the present embodiment, the second panel portion 47 attached to the outer panel 41 is more curved than the second panel portion 47 indicated by the imaginary line in the drawing before being attached to the outer panel 41. Have been.

According to the tailgate 40 described above,
The second panel portion 47 is locked and restrained by the claw portions 45a, 45b, and 45d of the first panel 12 portion in a state where the second panel portion 47 is bent. Therefore, the second panel portion 47 is not easily bent, and the restoring force of the second panel portion 47 exerts a stress to bend the first panel portion 42 on the outer panel 41. 42 is hardly bent further. Therefore, the rigidity of the tailgate 40 is improved. In addition, since the work of attaching and detaching the inner panel 46 to and from the outer panel 41 can be easily performed, it is suitable for recycling. In addition, at the time of assembling and disassembling according to the present embodiment, it may be necessary to greatly flex the second panel portion 47 as compared with the first embodiment, but the second panel portion 47 according to the present embodiment has a maintenance hole. 49
Is provided, the second panel portion 47 can be easily bent.

FIG. 10 shows a tailgate according to a third embodiment of the present invention. Hereinafter, the same configuration as in the first embodiment.
Descriptions of members and the like having an action will be simplified or omitted by giving the same reference numerals or corresponding reference numerals in the drawings. The tail gate 50 includes a resin outer panel 51 and a resin inner panel 56.

In this embodiment, the outer panel 51
A mounting flange 54 that allows the window member 30 to be mounted from the outside of the vehicle is provided inside the window opening 53 provided in the first panel portion 52. Tailgate 5 as above
According to 0, the thickness of the door body can be reduced, and the space inside the vehicle can be expanded.

It should be noted that the present invention is not limited to the above-described embodiment, and appropriate modifications and improvements can be made.
For example, in the above-described embodiment, the window member 30 is fixed to the door body. However, the window member may be attached so as to be movable between a space in the door body and the window opening. Further, in the above-described embodiment, the tailgate is exemplified, but the present invention is also applicable to an automobile door used for a front seat and a rear seat of an automobile. Further, as the window member, a transparent synthetic resin plate may be used in addition to the glass plate. Further, the outer panel may be made of a material other than resin such as metal.

[0039]

As described above, according to the present invention,
The outer panel has a first panel portion and a claw portion, and the resin inner panel has a second panel portion whose outer periphery is locked to the claw portion, and the projected area of the second panel portion is attached to the outer panel. Less than before. Therefore, the rigidity of the door is improved without increasing the thickness of the door panel, which hinders weight reduction, and without attaching a separate reinforcing member. Also, since welding or the like is not used, the work of attaching and detaching the inner panel to and from the outer panel can be easily performed. Therefore, it is suitable for recycling.

Further, in the vehicle door of the present invention, the outer panel has an upper side, a lower side, and a plurality of sides which are a pair of side sides connecting both ends of the upper side and the lower side, and at least one of the sides is the aforementioned side. If it is formed as an insertion portion having no claw portion, the operation of attaching and detaching the inner panel to and from the outer panel can be performed more easily. Further, in the vehicle door of the present invention, if the upper side is formed as an insertion portion, a high-mount stop lamp, a spoiler, or the like can be attached to the insertion portion, so that a variety of door forms can be widened.

Further, according to the present invention, after the second panel portion is bent while a part of a predetermined portion of the outer periphery of the second panel portion of the inner panel is locked with a part of the claw portion of the outer panel, The entire predetermined portion of the outer periphery of the second panel portion is engaged with the claw portion. Therefore, since the work of attaching and detaching the inner panel to and from the outer panel can be easily performed, it is suitable for recycling.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing a first embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the first embodiment of the present invention.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a sectional view taken along line VV in FIG. 1;

FIG. 6 is a schematic front view showing a second embodiment of the present invention.

FIG. 7 is a sectional view showing an assembling method according to a second embodiment.

FIG. 8 is a sectional view illustrating an assembling method according to a second embodiment.

FIG. 9 is a cross-sectional view illustrating an assembling method according to the second embodiment.

FIG. 10 is a sectional view showing a third embodiment of the present invention.

[Explanation of symbols]

 10, 40, 50 Tail gate (vehicle door) 11, 41, 51 Outer panel 12, 42, 52 First panel section 15, 45, 55 Claw section 16, 46, 56 Inner panel 17, 47, 57 Second panel section

Claims (4)

[Claims] 1. A vehicle door comprising at least an outer panel and an inner panel attached to the inside of the outer panel to form a space therebetween, wherein the outer panel is attached to a vehicle body. A first panel portion serving as a vehicle body outer panel and a claw portion provided at a predetermined portion of a peripheral portion of the first panel portion; and a predetermined outer peripheral portion of the claw portion such that the inner panel faces the first panel portion. And a projected area of the second panel portion before being attached to the outer panel and locked by the claw portion. A vehicle door characterized by the following. 2. The vehicle according to claim 1, wherein the outer panel has a plurality of sides which are an upper side, a lower side, and a pair of side sides connecting both ends of the upper side and the lower side when the outer panel is attached to the vehicle body, and at least one of the sides is the claw. The inner panel is formed as an insertion portion having no portion, and the inner panel is inserted between the first panel portion and the claw portion along the surface direction of the first panel portion via the insertion portion. Item 4. The vehicle door according to Item 1. 3. The vehicle door according to claim 2, wherein the upper side is formed as the insertion portion. 4. A vehicle door comprising at least an outer panel and an inner panel which is attached to the inner side of the outer panel and forms a space therebetween, wherein the outer panel is mounted on a vehicle body. A first panel portion serving as a vehicle body outer panel and a claw portion provided at a predetermined portion of a peripheral portion of the first panel portion; and a predetermined outer peripheral portion of the claw portion such that the inner panel faces the first panel portion. After the second panel portion is bent while a part of the outer peripheral predetermined portion of the second panel portion is locked to a part of the claw portion. A vehicle door characterized in that the entire outer peripheral predetermined portion of the second panel portion is engaged with the claw portion.