JP2020192956A - Door for vehicle - Google Patents

Abstract

To provide a door for vehicle which can suitably protect a crew member from impact from the outdoor side while achieving reduction in the weight of the door.SOLUTION: A door for vehicle includes (A) a resin-made outer panel 11, (B) a resin-made inner panel 12 that is mounted on the indoor side of the resin-made outer panel 11 and has a portion constituting an indoor design surface of the door for vehicle, (C) an impact beam 60 which is arranged in a state of extending in a vehicle longitudinal direction between the resin-made outer panel 11 and the resin-made inner panel 12 and alleviates impact from the outdoor side to the door for vehicle, (D) a lock mechanism part 74 that locks the door for vehicle to the vehicle body, and (E) a connection member 80 that connects the impact beam 60 and the lock mechanism part 74.SELECTED DRAWING: Figure 3

Description

The present invention relates to a vehicle door.

Conventionally, it is mainly known that a vehicle door is composed of a metal panel constituting the outer surface of the door and a resin trim forming the inner surface of the door. On the other hand, for example, as disclosed in Patent Document 1 below, a technique of making the member constituting the outer surface of the door made of resin for the purpose of weight reduction is also known. Specifically, in the vehicle door described in Patent Document 1 below, a tapping screw is tightened to a screw grommet attached to a steel door inner panel through a screw insertion hole formed in a synthetic resin door outer panel. The structure is such that a door inner panel made of steel plate is attached to a door outer panel made of synthetic resin.

Japanese Unexamined Patent Publication No. 62-23874

In the vehicle door described in Patent Document 1, a resin door outer panel is attached to a steel plate door inner panel to ensure strength while reducing the weight. However, in order to reduce the weight, the door is used. It is desirable not to use steel plate for the inner panel. Further, when the outer panel is made of resin like the vehicle door described in Patent Document 1, the strength is inferior to that of the steel plate, so that the impact from the outdoor side of the vehicle door is received. On the other hand, it is necessary to deal with the impact in order to protect the occupants.

The present invention has been made in view of such circumstances, and provides a vehicle door capable of suitably protecting an occupant from an impact from the outdoor side while reducing the weight of the door. That is the issue.

In order to solve the above problems, the vehicle door of the present invention
Resin outer panel and
A resin inner panel that is attached to the indoor side of the resin outer panel and has a portion that constitutes an indoor design surface of the vehicle door.
An impact beam, which is arranged between the resin outer panel and the resin inner panel so as to extend in the front-rear direction of the vehicle and for alleviating the impact from the outdoor side on the vehicle door,
A lock mechanism that locks the vehicle door to the vehicle body,
A connecting member that connects the impact beam and the lock mechanism portion,
It is characterized by having.

The vehicle door having this configuration is provided with an impact beam for the purpose of cushioning the impact from the outside. Here, consider a case where an impact is applied from the outdoor side in a structure in which the impact beam is directly attached to the resin outer panel or the resin inner panel by fastening or the like. In that case, since the portion of the outer panel or inner panel to which the impact beam is attached is made of resin, it may not be able to withstand the impact and may be damaged. That is, the impact beam may not be able to sufficiently absorb the impact.

On the other hand, in the vehicle door having this configuration, the impact beam and the lock mechanism portion are connected by a connecting member. When a force is applied to the impact beam due to an impact from the outdoor side, the vehicle door having this configuration transmits the force to the lock mechanism through the connecting member, and further transmits the force from the lock mechanism to the vehicle body. Can be made to. In other words, the vehicle door of this configuration can release a part of the force applied to the impact beam to the vehicle body via the lock mechanism, and the attachment part of the impact beam to the outer panel or inner panel is damaged. It can be prevented and the impact from the outside can be effectively mitigated by the impact beam to suitably protect the occupants.

In the above configuration, the impact beam is assumed to be fastened to the outdoor surface of the resin inner panel, and the connecting member is sandwiched between the impact beam and the resin inner panel. By being tightened, it can be fixed to the impact beam.

The vehicle door having this configuration is configured such that the impact beam is fastened to the resin inner panel together with the connecting member. In other words, the vehicle door of this configuration has a connecting member fixed to the fastening point of the impact beam on which a large force will act in the event of a collision from the outdoor side, so that force can be effectively locked by the locking mechanism. It can be released to the part side. In addition, even if a connecting member is added, the vehicle door having this configuration can be assembled at the same time in the assembly work of the impact beam to the resin inner panel, which can contribute to the simplification of the manufacturing work of the vehicle door. It becomes.

Further, in the above configuration, the lock mechanism portion is assumed to be fastened to the outdoor surface of the resin inner panel, and the connecting member is sandwiched between the lock mechanism portion and the resin inner panel. It can be fixed to the lock mechanism portion by being fastened together in the state of being fixed.

The vehicle door having this configuration has a locking mechanism that is fastened to the resin inner panel together with the connecting member. That is, in the vehicle door having this configuration, the force applied to the connecting member is directly transmitted to the lock mechanism portion in contact with the connecting member at the time of a collision from the outdoor side, so that force is effectively applied. It can be released to the vehicle body side. Further, even if a connecting member is added, the vehicle door having this configuration can be assembled at the same time in the assembly work of the lock mechanism portion to the resin inner panel, which can contribute to the simplification of the manufacturing work of the vehicle door. It will be possible.

Further, in the above configuration, the resin inner panel is provided on one end side in the front-rear direction of the vehicle to mount the lock mechanism portion, and is provided below the lock mechanism mounting portion to provide the impact. It is assumed that the beam has an impact beam mounting portion for mounting the end portion on the one end side in the vehicle front-rear direction of the beam, and the connecting member includes at least the lock mechanism mounting portion and the lock mechanism mounting portion on the outdoor surface of the resin inner panel. The shape may be formed along the portion including the impact beam mounting portion.

The vehicle door having this configuration has a shape in which the connecting member overlaps a part of the resin inner panel. That is, the vehicle door having this configuration has a simple configuration in which the connecting member is sandwiched between the resin inner panel and the lock mechanism portion, and is sandwiched between the resin inner panel and the impact beam. Can be made possible. Further, in the vehicle door having this configuration, the lock mechanism mounting portion and the impact beam mounting portion are arranged relatively close to each other, and the force is efficiently transmitted from the impact beam to the lock mechanism portion by the connecting member. It is possible to efficiently release the impact from the outdoor side to the vehicle body side.

Further, in the above configuration, the connecting member may be made of metal.

Since the connecting member of the vehicle door having this configuration is made of metal, the impact from the outdoor side can be effectively transmitted to the lock mechanism side by the connecting member, and the impact from the outdoor side can be effectively transmitted from the outdoor side. Performance against impact can be improved. From the viewpoint of weight reduction, it is desirable that the connecting member of the vehicle door having this configuration be small. For example, the connecting member can be made smaller by combining the lock mechanism mounting portion and the impact beam mounting portion described above in a relatively close arrangement. Therefore, it is particularly effective for the vehicle door having this configuration to have the lock mechanism mounting portion and the impact beam mounting portion arranged relatively close to each other.

According to the present invention, it is possible to provide a vehicle door capable of suitably protecting an occupant against an impact from the outdoor side while reducing the weight of the door.

It is a figure which shows the door for a vehicle which is an Example of this invention from the viewpoint from the indoor side. It is a perspective view which shows disassembled the door for a vehicle shown in FIG. It is a figure which shows the part on the inner panel side of the vehicle door shown in FIG. 1 from the viewpoint from the outdoor side. It is a perspective view which shows disassembled the main component of the part shown in FIG. It is sectional drawing (AA sectional view in FIG. 1) of the vehicle door shown in FIG. It is sectional drawing (BB sectional view in FIG. 1) of the vehicle door shown in FIG. It is sectional drawing (CC sectional view in FIG. 1) of the vehicle door shown in FIG. FIG. 5 is a cross-sectional view of the vehicle door shown in FIG. 1 (DD cross section in FIG. 1). FIG. 5 is a cross-sectional view of the vehicle door shown in FIG. 1 (EE cross section in FIG. 1).

Hereinafter, examples of the present invention will be described in detail as embodiments for carrying out the present invention with reference to the drawings. The present invention is not limited to the following examples, and can be carried out in various embodiments with various modifications and improvements based on the knowledge of those skilled in the art.

The vehicle door 10 according to the embodiment of the present invention is a front door of an automobile (vehicle) as a vehicle. The vehicle door 10 will be described with reference to FIGS. 1 to 9. In each drawing, the directions indicated by the arrows are FR in the front of the vehicle, RR in the rear of the vehicle, IN in the indoor direction, and OUT in the outdoor direction.

The vehicle door 10 has a configuration in which two panels, an outer panel 11 and an inner panel 12, are assembled to each other. The outer panel 11 is the outermost panel of the automobile that constitutes the appearance of the automobile, and is a resin outer panel made of resin. Further, the inner panel 12 is a panel that also serves as an interior member, that is, a panel having a portion that constitutes the interior view (indoor design surface) of the automobile, and is a resin inner panel made of resin. The vehicle door 10 is configured such that the outer panel 11 and the inner panel 12 face each other without any other panel members intervening between the resin outer panel 11 and the resin inner panel 12. Therefore, the weight of the vehicle door 10 has been reduced.

As shown in FIGS. 1 and 2, the inner panel 12 has a door pocket 13, an arm rest 14 as an elbow rest for an occupant, an inside handle 15 for opening and closing the vehicle door 10, and the inside handle 15 on the interior surface. It is equipped with a pull handle 16 that the occupant can hold (hold) to open / close the vehicle door 10, and an operation switch for opening / closing the window and locking / unlocking the vehicle door 10. A switch base 17 and the like are provided to form an indoor design surface. Further, as shown in FIGS. 3 and 4, the inner panel 12 has a main body 20 constituting the indoor design surface of the vehicle door 10 and a frame arranged on the outer peripheral portion of the outdoor surface of the main body 20. It is configured to include a shape-shaped reinforcing portion 21.

Examples of the resin used for the main body 20 of the inner panel 12 include, in addition to polypropylene resin, polyethylene resin, polystyrene resin, polyester resin, and resins in which natural fibers are blended with these resins. Examples of the resin used for the reinforcing portion 21 of the inner panel 12 include fiber-reinforced resins (thermocurable resins such as unsaturated polyester, epoxy resins, polyamide resins, phenol resins, glass fibers, carbon fibers, and aramid fibers. Polyacetal resin, polyamide resin, polycarbonate resin, polyimide resin, ultra-high molecular weight polyolefin (polyethylene) resin and the like can be exemplified in addition to those obtained by blending polyethylene fibers and the like.

On the other hand, in the door 10 for the main vehicle, since the outer panel 11 is also made of resin, the design range of the appearance configuration is widened, for example, deep drawing molding can be adopted. As the resin used for the outer panel 11, for example, a fiber reinforced resin (a thermocurable resin such as unsaturated polyester, an epoxy resin, a polyamide resin, a phenol resin, etc., and a glass fiber, a carbon fiber, an aramid fiber, a polyethylene fiber, etc. are mixed. In addition to the above, examples thereof include polyacetal resin, polyamide resin, polycarbonate resin, polyimide resin, and ultrahigh molecular weight polyolefin (polyethylene) resin.

As shown in FIG. 4, the main body 20 of the inner panel 12 has a shape in which the central portion bulges toward the indoor side, and the bulging portion is a portion constituting the indoor design surface. It is a design surface portion 30. From such a shape, the main body portion 20 has an indoor design surface portion 30, a front side standing wall portion 31 extending from the front end of the indoor design surface portion 30 to the outdoor side, and an indoor design surface portion 30 from the rear end to the outdoor side. It can be considered that the rear side standing wall portion 32 extending to the outside and the lower standing wall portion 33 extending from the lower end of the indoor design surface portion 30 to the outdoor side are provided. Further, as shown in FIGS. 1 to 4, the main body portion 20 has a shape protruding outward from each of the front side standing wall portion 31, the rear side standing wall portion 32, and the lower standing wall portion 33. That is, the main body portion 20 includes a front side overhanging portion 34 protruding from the front side standing wall portion 31 toward the front side, a rear side overhanging portion 35 protruding from the rear side standing wall portion 32 toward the rear side, and a lower standing wall portion. It has a lower overhanging portion 36 that projects downward from 33.

Further, as shown in FIG. 4, the reinforcing portion 21 of the inner panel 12 includes a front standing wall portion 40 having a shape along a part of the front standing wall portion 31 of the main body portion 20, and a rear standing wall portion 41 of the main body portion 20. It has a rear side overhanging portion 42 that overhangs rearward from the rear side standing wall portion 41. Due to such a shape, the reinforcing portion 21 is adhered to the main body portion 20 with an adhesive in a state of overlapping the inner surface (outdoor surface) of the main body portion 20. In addition to bonding, it is also possible to fix both by, for example, ultrasonic caulking or screw tightening.

The vehicle door 10 is arranged between the outer panel 11 and the inner panel 12, and includes, for example, a reinforcement 50 which is a reinforcing member for increasing the rigidity of the vehicle door 10 in the front-rear direction. The reinforcement 50 extends in the front-rear direction of the vehicle and is composed of a resin or a resin and a fiber material. The reinforcement 50 has two ridges 51 that extend along the front-rear direction of the vehicle and bulge outward.

The reinforcement 50 is assembled to the inner panel 12. Specifically, the reinforcement 50 has a mounting bracket 52 extending to the outdoor side at the front end, and the mounting bracket 52 is the inner surface (rear in the vehicle front-rear direction) of the reinforcing portion 21 on the front side standing wall portion 40. It is brought into contact with the side surface) and fastened together with the front side standing wall portion 40 of the reinforcing portion 21 and the front side standing wall portion 31 of the main body portion 20. Further, in the reinforcement 50, two through holes 53 and 54 penetrating in the vehicle interior / outer direction are formed at the rear end portion, and a cylindrical protrusion formed in the main body portion 20 in the large through hole 53 on the upper side. The 55 is inserted, and the small through hole 54 on the lower side is used to fix the 55 to the main body 20 by fasteners 56 (bolts 56A, nuts 56B).

The vehicle door 10 is arranged between the outer panel 11 and the inner panel 12, and includes, for example, an impact beam 60 for alleviating an impact from the outdoor side of the vehicle door 10. The impact beam 60 is made of resin or resin and a fiber material, and has a rectangular tubular member extending in the front-rear direction of the vehicle, in other words, a hollow portion 61.

The impact beam 60 is assembled to the inner panel 12. Specifically, mounting brackets 62 and 63 are fixed to the front end and the rear end of the impact beam 60, respectively, and the front end side of the impact beam 60 is the mounting bracket 62 on the front end side of the reinforcing portion 21. It is fixed by being screwed to the mounting seat 64 formed on the front side wall portion 40. On the other hand, the rear end side of the impact beam 60 is fixed to the main body 20 by the mounting bracket 63 on the rear end side, and as will be described in detail later, the impact beam 60 itself is also fixed to the main body 20. To.

A lock device 70 for locking / unlocking the vehicle door is provided between the vehicle door 10 and the vehicle body (vehicle body). Specifically, as shown in FIG. 7, the lock device 70 has a striker 72 fixed to the front surface of the center pillar 71 constituting the vehicle body, and a latch (engagement portion) 73 that engages with the striker 72. It is composed of a lock mechanism portion 74 attached to the vehicle door 10 and the like. The lock mechanism portion 74 is arranged on the outdoor side of the inner panel 12, specifically, on the front side of the rear standing wall portion 41 of the reinforcing portion 21, and as shown in FIGS. 6 and 8, with respect to the reinforcing portion 21. It is fixed by a plurality of bolts 75. Note that FIG. 7 shows a state in which the latch 73 is engaged with the striker 72 and the vehicle door 10 is locked.

Here, the problem of the impact beam 60 will be described. For example, when an impact (hereinafter, may be simply referred to as "side collision impact") is applied to the vehicle door from the outside due to a collision from the side of the vehicle, the fixed portion on the rear end side of the impact beam 60 A moment in the direction indicated by the arrow in FIG. 9 acts on the door. If the impact beam 60 is simply fixed to the resin inner panel 12, the portion that fixes the rear end side of the impact beam 60 and the inner panel 12 cannot withstand the impact of the side collision. , There is a risk of damage. If that portion is damaged and the impact beam 60 is separated from the inner panel 12, the impact of the side collision cannot be sufficiently mitigated.

On the other hand, the vehicle door 10 of the present embodiment has a configuration capable of avoiding a situation in which the fixed portion between the impact beam 60 and the inner panel 12 is damaged as described above. Specifically, the vehicle door 10 is provided with a connecting member 80 that connects the impact beam 60 and the lock mechanism portion 74. As shown in FIG. 3, the connecting member 80 is arranged on the outdoor side on the rear side of the inner panel 12, and as shown in FIGS. 3 and 6 to 9, the rear standing wall portion 41 and the rear of the reinforcing portion 21 are arranged. It is a member having a shape along the side overhanging portion 42. Further, as shown in FIG. 3, the upper end of the connecting member 80 overlaps with the reinforcement 50, and the lower end extends below the impact beam 60.

Next, the connection structure between the impact beam 60 and the lock mechanism portion 74 by the connecting member 80, that is, the mounting structure of the connecting member 80 will be described in detail. The connecting member 80 is attached at the same time when the reinforcement 50 is attached to the inner panel 12. As shown in FIGS. 4 and 5, a through hole 81 is formed in the connecting member 80 on the upper end side, and the connecting member 80 is attached by using the through hole 81. Specifically, as shown in FIG. 5, the reinforcement 50 is attached to the inner panel 12 so that the through hole 54 formed on the rear end side is inserted into the bolt 56A fixed to the main body 20. The connecting member 80 is attached so that the through hole 81 is inserted into the bolt 56A, and then the nut 56B is screwed into the bolt 56A. That is, the reinforcement 50 and the connecting member 80 are fastened together with respect to the main body 20 of the inner panel 12.

Further, the connecting member 80 is formed on the lower side with a through hole 83 for positioning into which the protrusion 82 formed on the main body 20 fits, and two through holes 84 for fastening. As shown in FIG. 9, one of the fastening through holes 84 is for fixing to the inner panel 12 together with the impact beam 60. The bolt 86A of the fastener 86 is fixed to the pedestal 85 formed on the main body 20, and in a state where the reinforcing portion 21 is attached to the main body 20, the bolt 86A is provided from the through hole 87 formed in the reinforcing portion 21. It is in a state of protruding toward the outdoor side. Then, the connecting member 80 is attached to the inner panel 12 so that the through hole 84 is inserted through the bolt 86A. Further, the impact beam 60 is attached so that a through hole 88 is formed on the rear end side and the through hole 88 is inserted into the bolt 86A. Then, the nut 86B is screwed into the bolt 86A, and the connecting member 80 and the impact beam 60 are fastened together with the inner panel 12. That is, the connecting member 80 is fixed to the impact beam 60 by being fastened together while being sandwiched between the impact beam 60 and the inner panel 12.

Incidentally, as shown in FIG. 9, the connecting member 80 has a fastened portion 89 in front of the through hole 84, and the fastened portion 89 is also fastened to the inner panel 12 by the fastener 90. ing.

The lock mechanism portion 74 described above is attached to the inner panel 12 after the connecting member 80 is fixed. That is, the lock mechanism portion 74 is attached from the outdoor surface of the connecting member 80. More specifically, as shown in FIGS. 6 to 8, the standing wall portion 80A of the connecting member 80 is in contact with the front surface (outdoor surface) of the rear standing wall portion 41 of the reinforcing portion 21, and is locked. The mechanism portion 74 is fixed to the reinforcing portion 21 by a bolt 75 in a state of being in contact with the standing wall portion 80A of the connecting member 80. That is, the connecting member 80 is fixed to the lock mechanism portion 74 by being fastened together while being sandwiched between the lock mechanism portion 74 and the inner panel 12 (reinforcing portion 21).

With the above structure, the impact beam 60 and the lock mechanism portion 74 are connected by the connecting member 80. Then, since the impact beam 60 and the lock mechanism portion 74 are connected by the connecting member 80, when the moment shown in FIG. 9 acts on the rear end portion of the impact beam 60 due to the impact of the side collision, the moment is shown in FIG. As shown in 7, it is transmitted to the connecting member 80. The moment acting on the connecting member 80 is transmitted to the lock mechanism portion 74 in contact with the standing wall portion 80A of the connecting member 80, and the latch 73 of the lock mechanism portion 74 is engaged with the striker 72, so that the striker It is transmitted to the center pillar 71 via 72. That is, the vehicle door 10 can release a part of the impact of the side collision to the vehicle body via the connecting member 80 and the locking device 70. Therefore, the vehicle door 10 is reduced in weight by the resin outer panel 11 and the resin inner panel 12, while preventing damage to the portion fixing the impact beam 60 and the inner panel 12 described above. However, the impact from the outdoor side can be effectively mitigated by the impact beam 60, and the occupant can be suitably protected.

Since the connecting member 80 is made of metal (for example, iron), the locking mechanism effectively locks the impact of the side collision by avoiding damage to itself as compared with the case of being made of resin. It can be transmitted to the unit 74, and the performance against the impact can be improved. Although the connecting member 80 is made of metal, its thickness is thinner than the thickness of the main body portion 20 and the reinforcing portion 21 constituting the resin inner panel 12, and the weight is reduced while increasing the rigidity. There is.

Further, from the viewpoint of weight reduction, it is desirable that the connecting member 80 has a small size, and as shown in FIG. 4, the locking mechanism portion for attaching at least the locking mechanism portion 74 on the outdoor side surface of the inner panel 12 It may have a shape along a portion including the mounting portion 100 and the impact beam mounting portion 101 for mounting the rear end portion of the impact beam 60, which is provided below the locking mechanism portion mounting portion 100.

In the vehicle door 10, the connecting member 80 is fastened together with the impact beam 60 and the lock mechanism portion 74 together with the inner panel 12. Therefore, the work of fastening is not increased as compared with the case where the connecting member 80 is not provided, and the manufacturing work of the vehicle door 10 is simplified.

In the above embodiment, an automobile is illustrated as a vehicle, but the vehicle is not limited to this, and a train or amusement vehicle as a ground vehicle, an airplane or helicopter as a flight vehicle, a ship as a sea or underwater vehicle, or the like. The vehicle door of the present invention can also be applied to a vehicle such as a submersible.

10 ... Vehicle door, 11 ... Outer panel [resin outer panel], 12 ... Inner panel [resin inner panel], 20 ... Main body, 21 ... Reinforcement, 30 ... Indoor design surface, 60 ... Impact beam, 70 ... Lock Device, 71 ... Center pillar [vehicle body], 72 ... Striker, 73 ... Latch, 74 ... Lock mechanism, 100 ... Lock mechanism mounting, 101 ... Impact beam mounting

Claims (5)

Resin outer panel and
A resin inner panel that is attached to the indoor side of the resin outer panel and has a portion that constitutes an indoor design surface of the vehicle door.
An impact beam, which is arranged between the resin outer panel and the resin inner panel so as to extend in the front-rear direction of the vehicle and for alleviating the impact from the outdoor side on the vehicle door,
A lock mechanism that locks the vehicle door to the vehicle body,
A connecting member that connects the impact beam and the lock mechanism portion,
A vehicle door characterized by being equipped with. The impact beam is assumed to be fastened to the outdoor surface of the resin inner panel.
The vehicle door according to claim 1, wherein the connecting member is fixed to the impact beam by being jointly fastened while being sandwiched between the impact beam and the resin inner panel. The lock mechanism portion is assumed to be fastened to the outdoor surface of the resin inner panel.
The first or second aspect of the present invention, wherein the connecting member is fixed to the lock mechanism by being sandwiched between the lock mechanism and the resin inner panel and fastened together. Vehicle door. The resin inner panel is provided on one end side in the vehicle front-rear direction to attach the lock mechanism portion, and is provided below the lock mechanism attachment portion in the vehicle front-rear direction of the impact beam. It is assumed to have an impact beam mounting portion for mounting the end portion on one end side.
According to any one of claims 1 to 3, the connecting member has a shape along at least a portion including the lock mechanism mounting portion and the impact beam mounting portion on the outdoor surface of the resin inner panel. Described vehicle door. The vehicle door according to any one of claims 1 to 4, wherein the connecting member is made of metal.

Images