JP3672033B2 - Vehicle door - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle door provided in a cab of a vehicle such as a truck.
[0002]
[Prior art]
In recent years, power window regulators have been built in even in the doors of commercial vehicles of this type in order to improve the comfortability in the cab. Such a power window regulator allows the window glass to move up and down, that is, to open and close by a switch operation, and includes an electric motor as a drive source thereof. It is attached to the inner panel that constitutes through an attachment bracket.
[0003]
[Problems to be solved by the invention]
By the way, since the inner panel of the door main body is thin, supporting the self-weight of the electric motor with the inner panel causes insufficient strength of the inner panel and also reduces the rigidity of the door.
In addition, since the shape of the inner panel varies depending on the type of vehicle, a dedicated mounting bracket is required for mounting the electric motor to the inner panel, increasing the number of parts and the weight of the door itself.
[0004]
In addition, the use of such a dedicated mounting bracket requires that the dedicated bracket be attached to the electric motor prior to assembly to the inner panel, resulting in an increase in the number of assembly steps. In addition, in order to prepare a dedicated mounting bracket for each vehicle type, it takes a lot of labor and cost to manufacture the mold.
The present invention has been made based on the above-described circumstances, and the object of the present invention is to increase the door rigidity, and at the same time, it is possible to reduce the number of parts and the weight with respect to the assembly of the electric motor of the power window regulator. An object of the present invention is to provide a vehicle door.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the vehicle door of the present invention (Claim 1) secures a window glass storage space between the panels by connecting the outer panel and the inner panel to each other by front and rear reinforcing members. And a door body having a belt line portion into which the window glass projects and sinks as the window glass opens and closes, and is provided in the door body, extends between the front and rear reinforcing members along the belt line, and The part between the reinforcing members is formed of a reinforcing beam formed as a box structure part having a hollow rectangular closed cross section independently of the inner panel, and a part integrally formed with the reinforcing beam, and is formed over the entire area of the box structure part. a beam bracket and extending from the box structure portion downwardly over, attached to the beam brackets, the electric motor serving as a drive source of a power window regulator that forms the opening and closing of the window glass Comprising the door.
[0006]
According to the above-described vehicle door, the belt line portion, which is a fragile portion of the door body, is reinforced by the reinforcing beam, and as a result, the door rigidity is increased. Further, since the electric motor is attached to the beam bracket integrated with the box structure portion of the reinforcing beam, the electric motor's own weight is not applied to the inner panel and is supported by the front and rear reinforcing members via the reinforcing beam.
[0007]
Specifically, the reinforcing beam has an inner reinforcing plate adjacent to the inner panel, and an outer reinforcing plate that forms the box structure portion between the inner reinforcing plate, and the beam bracket is the box structure. The inner and outer reinforcing plate portions extending downward from the lower edge of the portion are formed in a plate shape that overlaps each other (Claim 2). Such a reinforcing beam forms a closed section structure independently of the inner panel.
[0008]
Further, the beam bracket has a shape such that the width along the box structure portion is reduced downward from the box structure portion , and the electric motor has the beam bracket sandwiched between the inner panel and the beam bracket. It is attached to (claim 3). More specifically, the beam bracket extends downward from the entire lower edge of the inner reinforcing plate. Such a beam bracket has a high coupling rigidity with the inner reinforcing plate, and does not vibrate with respect to the inner reinforcing plate when the vehicle is running or when the electric motor is driven.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a part of a vehicle door provided in a truck cab, that is, an inner panel 2 thereof.
The inner panel 2 has a window frame 4 at the upper portion thereof, and the bottom of the window frame 4 is a belt line portion 6 into which a window glass (not shown) protrudes and sinks. A door pillar 8 as a reinforcing member is attached to the front portion of the inner panel 2. The door pillar 8 extends vertically along the front edge of the inner panel 2, and upper and lower door hinges 10, 12 are attached to the door pillar 8. It is done. Therefore, the vehicle door is supported by the vehicle body, that is, the cab body (not shown) via the door hinges 10 and 12 so as to be freely opened and closed.
[0010]
On the other hand, a latch reinforcing member 14 is attached to the rear portion of the inner panel 2, and this latch reinforcing member 14 also extends vertically along the rear edge of the inner panel 2, as with the door pillar 8. The latch reinforcing member 14 is provided with a door latch 16 at the center when viewed in the vertical direction. The door latch 16 can be engaged with a striker (not shown) on the cab body side.
[0011]
The inner panel 2 includes an upper reinforcing beam 18, which extends between the door pillar 8 and the latch reinforcing member 14 along the bottom of the window frame 4, that is, along the belt line portion 6. Both ends of the upper reinforcing beam 18 are connected to the door pillar 8 and the reinforcing member 14, respectively.
As shown in FIG. 2, the upper reinforcing beam 18 includes an inner reinforcing plate 20 and an outer reinforcing plate 22, and the inner reinforcing plate 20 is bonded by spot welding so as to stick to the inner panel 2 according to the shape of the inner panel 2. ing.
[0012]
On the other hand, the upper and lower edges of the outer reinforcing plate 22 are closely attached to the inner reinforcing plate 20, and when viewed in the vertical direction, the central portion of the outer reinforcing plate 22 is predetermined from the inner strong plate 20. They are separated by a distance. That is, the central portion of the outer reinforcing plate 22 cooperates with the inner reinforcing plate 20 to form a substantially rectangular closed cross-sectional structure, that is, a hollow box structure portion 24, and the box structure portion 24 forms the belt line portion 6. Extending along.
[0013]
A two-dot chain line 26 in FIG. 2 indicates an outer panel of the vehicle door. More specifically, the outer panel 26 has a front edge coupled to the front edge of the inner panel 2 via the door pillar 8, while a rear edge is coupled to the rear edge of the inner panel 2, so It constitutes the main body.
A storage space 28 for a window glass (not shown) is secured between the outer panel 26 and the inner panel 2 in the door body, and a one-dot chain line 30 in FIG. 2 indicates a vertical movement line of the window glass. Accordingly, the window glass moves up and down along the vertical movement line and protrudes and retracts with respect to the belt line portion 6.
[0014]
Further, as shown in FIG. 1, the inner panel 2 is provided with a lower reinforcing beam 32, which is positioned below the upper reinforcing beam 18, and the upper reinforcing beam 18. It extends in parallel. The lower reinforcing beam 32 also has a closed cross-sectional structure like the upper reinforcing beam 18. Specifically, the lower reinforcing beam 32 is formed of a pipe member, and both ends thereof are coupled to the door pillar 8 and the latch reinforcing member 14 via coupling brackets.
[0015]
As shown in FIG. 1, an opening 34 is formed in the inner panel 2 between the upper reinforcing beam 18 and the lower reinforcing beam 32, and this opening 34 is a power window regulator or the like. In addition to being used for assembly, it contributes to weight reduction of vehicle doors.
As apparent from FIG. 2, the lower edges of the inner reinforcing plate 20 and the outer reinforcing plate 22 forming the box structure portion 24 of the upper reinforcing beam 18 are in close contact with each other, and extend downward according to the shape of the inner panel 2. A beam bracket 36 integral with the box structure portion 24 is formed.
[0016]
As apparent from FIG. 1, the beam bracket 36 extends downward from substantially the entire longitudinal direction of the box structure portion 24 and has a shape that is reduced in width according to the extension. That is, the actual shape of the beam bracket 36 is complicated as shown in FIG. 1, but the schematic shape is as shown in FIG. That is, the beam bracket 36 has such a shape that the width along the longitudinal direction of the box structure portion 24 decreases in the extending direction.
[0017]
The beam bracket 36 is provided with a geared electric motor 38 which serves as a drive source for the power window regulator described above. Specifically, as shown in FIG. 2, the electric motor 38 is attached to the beam bracket 36 by a plurality of attachment bolts 40 with the beam bracket 36 sandwiched between the electric motor 38 and the inner panel 2. In FIG. 2, only one mounting bolt 40 is shown.
[0018]
As is clear from FIG. 2, the beam bracket 36 corresponding to the electric motor 38 is configured by notching the extending portion from the outer reinforcing plate 22.
According to the vehicle door described above, since the upper reinforcing beam 18 extends along the belt line portion 6 in the door body, the upper reinforcing beam 18 can compensate for insufficient strength in the belt line portion 6. In addition, since the upper reinforcing beam 18 itself has a closed cross-sectional structure, its mechanical strength is high, and the rigidity of the door body, that is, the entire vehicle door can be effectively increased.
[0019]
Then, the electric motor 38 of the power window regulator, so mounted on the beam bracket 36 of the upper reinforcement beam 18 one body, does not require a dedicated mounting bracket for the electric motor 38.
Since the weight of the electric motor 38 is supported by the door pillar 8 and the latch reinforcing member 14 from the beam bracket 36 via the upper reinforcing beam 18, the weight of the electric motor 38 is not added to the inner panel 2.
[0020]
Furthermore, since the upper edge of the beam bracket 36 extends over substantially the entire longitudinal direction of the box structure portion 24 in the reinforcing beam 18, the coupling rigidity between the box structure portion 24 and the beam bracket 36 is high. Therefore, the beam bracket 36 does not vibrate with respect to the reinforcing beam 18 while the vehicle is running or the electric motor 38 is driven, and the inner panel 2 is not deformed due to the vibration. . As a result, stable attachment of the electric motor 38 is ensured.
[0021]
In this regard, if the beam bracket 36 has a rectangular shape that hangs straight from the reinforcing beam 18 as shown by a two-dot chain line in FIG. 3, in this case, the coupling rigidity between the beam bracket 36 and the upper reinforcing beam 18 is It is weak and may suffer from the above-mentioned problems.
The present invention is not limited to the above-described embodiment, and various modifications can be made.
[0022]
For example, in one embodiment, the beam bracket 3 6 is formed by superimposing the extending portion of the inner and outer reinforcing plate 20 and 22, but its mechanical strength is high, however, the beam bracket 3 6 inner Or it can also comprise only one extension part of the outer reinforcement plates 20 and 22.
Further, if the beam bracket 3 6 is composed of the extending portion of the outer reinforcing plate 22, it closed cross section of the upper reinforcement beam 18 may be shaped by the outer reinforcing plate 22 and the inner panel 2.
[0023]
【The invention's effect】
As described above, according to the vehicle door of the present invention (Claim 1), the beam bracket is integrated from the portion of the reinforcing beam extending along the belt line portion of the door body , that is, the box structure portion having a rectangular closed cross section. extend to, from and to attach the electric motor of the power window regulator to the beam brackets, without using a special mounting bracket, making it possible to mount the electric motor, to reduce the number of parts and weight In addition, the rigidity of the door body can be increased by the reinforcing beam itself.
[0024]
Further, when the reinforcing beam is composed of the inner and outer reinforcing plates , and the beam bracket is formed by overlapping the inner and outer reinforcing plates (claim 2), the mechanical strength of the reinforcing beam itself or the beam bracket is increased. The strength is high enough to ensure a stable attachment of the electric motor to the beam bracket of the bracket. If the beam bracket has a shape that contracts in the downward extending direction (Claim 3), the coupling rigidity between the reinforcing beam and the beam bracket is high. Greatly contributes to stable installation.
[Brief description of the drawings]
FIG. 1 is a schematic view showing an inner panel of a vehicle door according to an embodiment.
FIG. 2 is a sectional view taken along line II-II in FIG.
FIG. 3 is a view schematically showing an outer shape of a beam bracket.
[Explanation of symbols]
2 Inner panel 6 Belt line 8 Door pillar (front reinforcing member)
14 Latch reinforcement member (rear side reinforcement member)
18 Upper reinforcing beam 20 Inner reinforcing plate 22 Outer reinforcing plate 36 Beam bracket 38 Electric motor

Claims (3)

A belt line portion in which the outer panel and the inner panel are connected to each other by front and rear reinforcing members to secure a window glass storage space between the panels, and the window glass projects and sinks as the window glass opens and closes. A door body having
A box structure provided in the door body, extending between the front and rear reinforcing members along the belt line, and a portion between the front and rear reinforcing members having a hollow rectangular closed cross section independent of the inner panel A reinforcing beam formed as a part ;
A beam bracket formed from a part integral with the reinforcing beam and extending downward from the box structure part over the entire area of the box structure part ;
A vehicle door comprising: an electric motor attached to the beam bracket and serving as a drive source of a power window regulator that opens and closes the window glass. The reinforcing beam includes an inner reinforcing plate adjacent to the inner panel, and an outer reinforcing plate that forms the box structure portion between the inner reinforcing plate and the inner reinforcing plate.
2. The beam bracket according to claim 1, wherein the beam bracket has a plate shape in which the inner and outer reinforcing plate portions extending downward from a lower edge portion of the box structure portion are overlapped with each other . Vehicle door. The beam bracket has a shape such that the width along the longitudinal direction of the box structure portion is reduced downward from the box structure portion ,
The vehicle door according to claim 2, wherein the electric motor is attached to the beam bracket in a state where the beam bracket is sandwiched between the electric motor and an inner bracket .

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