JP2005067382A - Vehicle door structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low cost synthetic resin door showing a superior assembling workability by making a soft flexible member arranged inside the synthetic resin door double as a ground terminal for the electric parts. <P>SOLUTION: A rear door 1 comprises a synthetic resin inner panel 11 and an outer panel 10. The rear door 1 is oscillatably attached to a vehicle body at its upper part by a hinge member 2 so as to open or close an opening arranged at the vehicle body. An electrical conductive strap 8 is arranged inside the rear door 1. The electrical conductive strap 8 has a function for preventing a splashing of rear door pieces when the rear door 1 is broken at the time of crash. One end of the electrical conductive strap 8 is fixed to the hinge member 2 and the other end of the electrical conductive strap 8 is fixed to a lock member 3. Earth lines 600, 610 and 620 of the electrical component parts 60, 61 and 62 are electrically connected to the electrical conductive strap 8. The electrical component parts 60, 61 and 62 are grounded to the vehicle body through the electrical conductive strap 8 and the hinge member 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vehicle door structure, and more particularly to a synthetic resin vehicle door structure.

  2. Description of the Related Art Conventionally, a vehicle door made of a synthetic resin is known because of the need for weight reduction and production efficiency improvement. When the door is made of synthetic resin, the flexible member is placed inside the door, specifically the door outer panel, so that the broken door pieces are not scattered or the door is not dropped in the event of a vehicle collision. It is performed between door inner panels (for example, refer to the following Patent Document 1).

Japanese Utility Model Publication No. 5-34970

  On the other hand, a vehicle door, particularly a back door, is generally equipped with many electrical components such as a brake lamp, a wiper motor, and a license plate lamp. Electrical equipment usually requires grounding, but if it is a metal door such as a steel plate, the door body has conductivity, so it can be grounded relatively simply by simply connecting it to the door body. .

  However, when the back door is formed of a synthetic resin as described in Patent Document 1, since the synthetic resin is a non-conductor, the electrical component cannot be grounded in the same manner as a metal back door. It is necessary to separately provide a grounding conductor connected to a conductive member such as a hinge that is a connecting portion between the back door and the vehicle body in the back door. However, as described above, when a synthetic resin back door is used, if it is necessary to provide a flexible member for preventing scattering at the time of a collision, the flexible member and the grounding are provided inside the back door. Both the conductor and the conductor are provided, and there is a problem that the cost of the back door is increased and the assembling workability of the back door is deteriorated. Although it is conceivable to route the ground wire of the electrical component to the vehicle body, a process such as holding a long ground wire is required when assembling the back door, and it is difficult to say that the assembly workability is good.

  The present invention has been made in view of the above-mentioned problems, and the problem is that the flexible member provided inside the synthetic resin door is used as a ground for electrical components in order to prevent scattering in the event of a collision. Accordingly, it is an object of the present invention to provide a synthetic resin door with low cost and good assembling workability.

In order to solve the above problems, the present invention has the following configuration. That is, the first configuration of the present invention is as follows.
The vehicle is made of non-conductive synthetic resin and has one end swingably supported via a hinge member provided near the edge of the opening to open and close the opening formed in the vehicle body. In the door structure,
The inside of the door has conductivity, one end is fixed to the hinge portion and the other end is fixed to a predetermined portion inside the door, and is electrically connected to the vehicle body via the hinge portion. A flexible member is provided,
The ground wire of the electrical component provided in the door is electrically connected to the flexible member.

  According to the above configuration, the flexible member provided inside the synthetic resin door prevents the door pieces from scattering when the door breaks during a collision or the like, and the flexible member is provided on the door. It also functions as a ground for electrical components. Accordingly, there is no need to separately provide a flexible member for preventing scattering and a grounding member for electrical components inside the door, and it is possible to provide a resin door with low cost and good assembling workability.

The second configuration of the present invention is as follows:
The predetermined portion inside the door to which the other end of the flexible member is fixed is a lock member that keeps the door closed.
When the door is in the closed state, the flexible member is electrically connected to the vehicle body via the lock member.

  According to said structure, when a door is in a closed state, a flexible member is electrically connected to a vehicle body via the both ends. Therefore, the electrical component provided on the door can be more reliably grounded. Similarly, when the door is in the closed state, one end of the flexible member is connected to the vehicle body via the hinge member and the other end is connected to the vehicle body via the lock member. It can be increased.

The third configuration of the present invention is:
The flexible member is fixed to the door panel inside the door,
The ground wire is fastened and fixed to the fixing portion of the flexible member to the door panel.

  According to the above configuration, when assembling the door, the flexible member can be fixed to the door panel and the ground wire can be fixed to the flexible member in one step, thereby improving the door assembly workability. I can do it.

The fourth configuration of the present invention is as follows.
The door is a back door that is swingably supported via a hinge member provided at an upper edge of an opening provided in a rear portion of the vehicle body.

  According to the above configuration, the grounding function of the flexible member is effectively performed for many electrical components with respect to the back door that is usually equipped with more electrical components than the side door. Moreover, since the flexible member is supported via the hinge member provided above, the back door can be prevented from falling when the back door is broken.

  According to the present invention, a low-cost and easy-to-assemble synthetic resin door can be obtained by combining a flexible member provided inside a synthetic resin door with a ground for electrical components to prevent scattering in the event of a collision. Can be provided.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to FIGS. 1 and 2. FIG.

  FIG. 1 is a front view of a door structure to which the present invention is applied as viewed from the rear in a state where the door structure is provided in a vehicle. The present invention is applied to a back door 1 of a vehicle. As is well known, the back door 1 swings in the vertical direction via two hinge members 2 provided on the upper portion thereof so as to be separated from each other in the vehicle width direction. As a result, an opening (not shown) provided at the rear of the vehicle is opened and closed. A lock member 3 that can be engaged with a striker (not shown) provided at a corresponding position in the vehicle body is provided at a substantially central portion in the vehicle width direction below the back door 1, and the lock member 3 is a striker. The closed state of the back door 1 is maintained by engaging with.

  As will be described later, the back door 1 is composed of a non-conductive inner panel 11 (not shown in FIG. 1) formed of a synthetic resin and a non-conductive outer panel 10 in the same manner. A space is defined in The back door 1 is provided with a window opening 4, and a glass window panel 5 is bonded to the outer panel 10 so as to cover the window opening 4. Further, a trim (not shown) is attached to the inner panel 11 on the surface on the vehicle interior side.

  The back door 1 composed of the inner panel 11 and the outer panel 10 includes a high-mount stop lamp 60 provided on the top of the back door 1, a defogger 61 printed on the surface of the window panel 5, and a rear wiper motor 62 (hereinafter referred to as a wiper motor). Etc.) is equipped. They are connected to a vehicle battery via wiring (wiring and battery are not shown) and are driven by electric power from the battery. In addition to the electrical components, the back door 1 is operated by operating the lock member 3 to release the engagement with the striker and maintain the open state of the back door 1. For example, a damper (not shown) is provided. The structure and method for attaching the components including the respective electrical components to the back door 1 are the same as those used for ordinary back doors and synthetic resin doors, and detailed description thereof is omitted.

  Further, in a space defined between the inner panel 11 and the outer panel 10, a strap 8 having flexibility and conductivity in a band shape from the upper hinge member 2 to the lower lock member 3 (hereinafter referred to as a conductive strap). Is arranged. The conductive strap 8 is a woven fabric made of metal fibers as an example, and extends downward along the side of the back door 1 from the upper end fixed together with one of the hinge members 2, and near the lower edge of the back door 1. Then, after bending toward the center in the vehicle width direction, the lock member 3 is reached, and is fastened together with a fixing portion of the lock member 3 to the inner panel 11 on the inner surface. As will be described in detail later, this conductive strap 8 serves both as a ground function for electrical components provided in the back door 1 and a function for preventing the back door pieces from being scattered or dropped when the back door 1 is damaged. is there. The conductive strap 8 can be composed of a commercially available conductive tape or a woven fabric made of conductive PET, etc., but the flexibility necessary to prevent damage to itself in the event of a collision, as will be described later. And strength necessary to prevent the back door 1 from scattering.

  The high-mount stop lamp 60, the defogger 61, and the wiper motor 62 as electrical components provided on the back door 1 have ground wires 600, 610, and 620, respectively. The ground wires 600, 610, and 620 are electrically connected to the conductive strap 8, and the electrical components 60, 61, and 62 are closed via the conductive strap 8 and the hinge member 2 and the back door 1 is closed. It is sometimes configured to be grounded to the vehicle body via the lock member 3. That is, if the back door is made of a normal metal, the back door itself can be grounded. However, in this embodiment, the back door 1 is made of synthetic resin, and the back door 1 itself can be grounded directly. There is no grounding through the conductive strap 8. Hereinafter, the structure of the connecting portion of the ground wires 600, 610, 620 and the conductive strap 8 will be described with reference to FIG. explain. In FIG. 2, the outer panel 10 is not shown.

  A boss portion 110 in which a nut 90 is embedded and formed is formed in the inner panel 11, and the conductive strap 8 and the lead portion 621 of the ground wire 620 are fastened and fixed to the nut 90 with a bolt 91. The lead portion 621 of the ground wire 620 is in contact with the conductive strap 8, and the ground wire 620 of the wiper motor 62 and the conductive strap 8 are electrically connected. By performing the fastening together in this way, the connection work of the conductive strap 8 and the ground wire 620 is performed simultaneously with the work of fixing the conductive strap 8 to the inner panel 11. Work efficiency is improved.

  Such joint fastening is similarly performed between the ground wire 600 and the conductive strap 8 of the high-mount stop lamp 60 and between the ground wire 610 and the conductive strap 8 of the defogger 61. That is, in the boss portion 110 provided on the inner panel 11 corresponding to each ground wire 600, 610, and 620 and having the nut 90 embedded therein, the lead portions and the conductive strap 8 are fastened and fixed together by the bolts 91. Electrical connection is made. Referring again to FIG. 1, the conductive strap 8 and the ground wire 600 of the high-mount stop lamp 60 are provided on the boss provided near the hinge member 2, and the boss provided on the side of the window panel 5. The conductive strap 8 and the ground wire 610 of the defogger 61 are respectively connected to the boss portion provided near the height where the wiper motor 62 is provided, and the conductive strap 8 and the ground wire 620 of the wiper motor 62 are respectively bolts 91. And the nut 90 are fastened together (both bosses are not shown in FIG. 1). That is, the conductive strap 8 is connected to the ground wire 600 of the high mount stop lamp 60, the connection portion of the hinge member 2 and the ground wire 610 of the defogger 61, and the ground wire 620 of the wiper motor 62 inside the back door 1. Are connected to the inside of the back door 1, that is, the inner panel 11.

  Therefore, for example, even if the back door 1 is damaged at the time of rear-end collision of the vehicle, the conductive strap 8 has flexibility that does not damage itself and strength that can prevent scattering of the back door. The conductive strap 8 prevents the fragments of the back door 1 from scattering to the maximum. In particular, since the conductive strap 8 is fixed to the hinge member 2, support to the hinge member 2 is maintained via the conductive strap 8 even if the back door 1 is cracked. It is prevented from falling off the hinge member 2 and falling. Further, as described above, the conductive strap 8 is fixed inside the back door 1 at five positions with a certain interval, so that the back door piece is highly likely to be obtained regardless of the number of damaged parts or the number of damaged parts. Can be prevented from scattering and falling.

  In addition, the conductive strap 8 as described above has both functions of the grounding function of the electrical components 60, 61 and 62 as described above and the function of preventing scattering and dropping when the back door 1 is broken. For this purpose, it is provided in the back door 1 as one member without the need to provide individual members, and the cost of the back door 1 and the efficiency of assembly work can be realized.

  Although the present invention has been described with reference to the preferred embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the invention. . For example, in this embodiment, the electrical components connected to the conductive strap 8 and grounding are the high-mount stop lamp 60, the wiper motor 61, and the defogger 62. In addition to these, a key cylinder, a license plate lamp, a brake lamp, etc. But it ’s okay. In addition, for the connection between the ground wire and the conductive strap 8 for them, a boss portion 110 in which a nut 90 is embedded in the inner panel 11 of the back door 1 is formed and fixed together with the conductive strap 8. Alternatively, the plurality of ground wires and the conductive strap 8 may be fastened and fixed to the boss portion 110 at one place. Furthermore, the present invention can be applied to a side door made of synthetic resin in addition to the back door.

  In the above embodiment, the conductive strap 8 is provided from one hinge member 2 to the lock member 3 on one side of the back door 1, but in addition to the other hinge member 2 to the lock member. 3 may be provided over the other side. Furthermore, various modifications are possible, such as forming a part to connect them, or forming in a shape other than a belt shape.

It is the front view which looked at the door structure to which this invention was applied from the back in the state provided in the vehicle.

It is an AA arrow cross-sectional schematic of FIG.

Explanation of symbols

1 Back door (door)
2 Hinge member 3 Lock member 8 Conductive strap (flexible member)
11
Inner panel (door panel)
60
High-mount stop lamp (electrical component)
61
Defogger (electric equipment)
62
Wiper motor (electric equipment)
600, 610, 620 Ground wire

Claims (4)

The vehicle is formed of non-conductive synthetic resin and has one end swingably supported via a hinge member provided near the edge of the opening to open and close the opening formed in the vehicle body. In the door structure,
Conductive inside the door, one end is fixed to the hinge portion and the other end is fixed to a predetermined portion inside the door, and is electrically connected to the vehicle body via the hinge portion A flexible member is provided,
A vehicle door structure, wherein a ground wire of an electrical component provided on the door is electrically connected to the flexible member. The predetermined portion inside the door to which the other end of the flexible member is fixed is a lock member that keeps the door closed.
The vehicle door structure according to claim 1, wherein the flexible member is electrically connected to the vehicle body via the lock member when the door is in a closed state. The flexible member is fixed to the door panel inside the door,
3. The vehicle door structure according to claim 1, wherein the ground wire is fastened together with the fixing portion of the flexible member to the door panel. The said door is a back door supported by the hinge member provided in the upper edge of the opening part provided in the rear part of the said vehicle body so that rocking | fluctuation was possible. The vehicle door structure according to claim 1.

Images