JP2013256175A - Passenger car door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively prevent a trouble such as the occurrence of an aging crack in a window frame supporting part of an inner panel.SOLUTION: A passenger car door includes a door body 10m formed by the join of an inner panel 18 and an outer panel 17 at their peripheral edges, a window frame 10w provided on the upper side of the door body 10m and supported at is lower end by the inner panel 18, and hinge mechanisms via which the door body 10m is mounted on a vehicle body in a horizontally turnable state so that the door body 10m can open and close the doorway of the vehicle body. On a window frame supporting part 180 formed on the upper part of the inner panel 18 to support the window frame 10w at its lower end, beads 182, 184 are formed extending along a boundary line between the door body 10m and the window frame 10w.

Description

  The present invention relates to a passenger car door configured to be able to open and close a vehicle entrance by horizontally turning.

Japanese Patent Application Laid-Open No. 2004-151561 describes a technique related to the above-described passenger car door.
The door 100 of the passenger car of patent document 1 is a front door, and is comprised from the door main-body part 102 and the window frame part 104, as shown to FIG. 5 (A). The door main body 102 is configured by joining an inner panel 103 and an outer panel (not shown) at their peripheral portions. In addition, the window frame portion 104 has the front and rear lower ends of the window frame portion 104 accommodated between the inner panel 103 and the outer panel of the door main body portion 102, and as shown in FIG. It is fixed by welding W.
Note that FIG. 5B is a cross-sectional view taken along the line BB in FIG.
As shown in FIG. 5A, a pair of upper and lower hinge mechanisms 105 are provided at the front end position of the door main body 102, and the door main body 102 is connected to the vehicle body (not shown) via the hinge mechanisms 105. ) Is installed at the front edge of the entrance. Thereby, the door 100 can be horizontally rotated between a fully closed position for closing the entrance / exit to the vehicle body and a fully open position for fully opening the entrance / exit.
A door lock mechanism 107 is provided at the rear end of the door main body 102. Further, a rubber frame-shaped door weather strip (not shown) is provided on the indoor peripheral edge of the door 100, that is, from the window frame part 104 to the indoor peripheral edge of the door main body part 102. For this reason, when the door 100 is closed, the weather strip for the door is crushed between the door 100 and the peripheral edge of the entrance / exit, and the space between the entrance / exit and the door 100 is sealed.

JP 2000-071770 A JP2008-162443

In the door 100 described above, a rubber frame-shaped weather strip for doors (not shown) is provided on the indoor peripheral edge of the door 100. For this reason, for example, when the door 100 is closed, a crushing reaction force when the door weather strip is crushed is applied to the door 100. In particular, since the kinetic energy at the time of closing the door 100 on the rear end side that is the rotation free end side of the door 100 becomes large, the crushing reaction force when the door weatherstrip is crushed becomes large. Due to this crushing reaction force F, as shown in FIG. 5 (B), the window frame portion 104 having a lower strength than the door main body portion 102 is placed outside the vehicle with respect to the door main body portion 102 as indicated by a two-dot chain line. Deform. Then, the window frame portion 104 deformed to the outside of the vehicle is returned to its original position by its own elastic force and the elastic force of the inner panel 103 and the like. That is, the window frame portion 104 is rotated in the indoor direction or the vehicle outer direction around a boundary line between the window frame portion 104 and the door main body portion 102 or a straight line parallel to the boundary line with respect to the door main body portion 102. Vibrate.
As a result, a bending force K resulting from the vibration S of the window frame portion 104 is applied in the vicinity of the welded portion W of the inner panel 103 to which the lower end portion of the window frame portion 104 is welded, and cracks occur in this portion over time. There is a risk.

FIG. 6 shows a door (see Patent Document 2) in which the connection strength between the inner panel 103 and the window frame portion 104 is improved in order to prevent the inner panel 103 from cracking. That is, a bracket 103 b is fixed to the rear upper end of the inner panel 103, and the bracket 103 b is connected to the lower portion of the window frame portion 104 by the connecting bracket 108. For this reason, the bending force K due to the vibration of the window frame portion 104 is not applied intensively to the upper portion of the inner panel 103, and the crack of the inner panel 103 over time can be prevented.
However, in the configuration in which the rear upper end of the inner panel 103 is connected to the lower portion of the window frame portion 104 by the bracket 103b and the connecting bracket 108, the number of parts increases and the bracket 103b and the connecting bracket 108 are connected to the inner panel 103 and the window, respectively. It takes time and effort to fix to the frame portion 104.

  The present invention has been made to solve the above-mentioned problems, and the problem to be solved by the present invention is to prevent problems such as cracking of the window frame support portion of the inner panel at a low cost. Is to be able to do it.

The above-described problems are solved by the inventions of the claims.
The invention according to claim 1 is provided on a door main body portion formed by joining an inner panel and an outer panel at the peripheral edge portions thereof, and on the upper side of the door main body portion, and a lower end portion is provided by the inner panel. A door of a passenger car comprising: a window frame portion configured to be supported; and a hinge mechanism that attaches to the vehicle body in a state in which the door body portion can be horizontally rotated so as to be able to open and close the entrance of the vehicle body, A bead extending along a boundary line between the door body portion and the window frame portion is formed on the window frame support portion that is formed on the upper portion of the inner panel and supports the lower end portion of the window frame portion. To do.

According to the present invention, the bead extending along the boundary line between the door main body portion and the window frame portion is formed in the window frame support portion of the inner panel that supports the lower end portion of the window frame portion. For this reason, when the window frame portion vibrates so as to rotate about the boundary line with respect to the door body portion under the reaction force of the door weather strip when closing the door, the window of the inner panel The frame support portion is easily bent at the bead position in accordance with the vibration of the window frame portion. That is, the window frame support part of the inner panel bends at the position of the bead around the center line of the bead along the boundary line in accordance with the vibration of the window frame part. For this reason, the bending force when the window frame part vibrates is applied to the entire bead of the window frame support part of the inner panel, and is not concentrated on a part. Therefore, it is possible to prevent problems such as cracks occurring with time in a part of the window frame support portion of the inner panel.
Further, by forming a bead on the window frame support part of the inner panel, cracks in the window frame support part over time can be prevented, so that the cost of preventing cracks is not so high.

According to invention of Claim 2, the bead is formed in the window frame support part located in the rotation free end side of a door, It is characterized by the above-mentioned.
As described above, since the bead is formed in the window frame support portion on the rotation free end side of the door which has the largest kinetic energy when the door is closed, it is possible to efficiently prevent the window frame support portion of the inner panel from cracking. become.

According to the invention of claim 3, the bead is formed so as to protrude toward the inner space side of the door main body portion formed by the inner panel and the outer panel, and to form a groove on the surface side of the inner panel. And
For this reason, a bead does not become obstructive when covering an inner panel and a window frame support part with decoration materials, such as a trim.
According to the invention of claim 4, a plurality of beads are provided in the height direction of the window frame support portion of the inner panel.
For this reason, the bending force with respect to the window frame support part of the inner panel resulting from the vibration of the window frame part can be further dispersed.

  According to the present invention, it is possible to prevent problems such as cracking with time in a part of the window frame support portion of the inner panel at low cost.

It is the whole model side view which looked at the door of the passenger car concerning Embodiment 1 of the present invention from the room inner side. It is the II-II arrow sectional drawing of FIG. It is a perspective view showing the rear boundary position of the window frame part and door main-body part of the said door. FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3. It is the whole model side view (A figure) which looked at the door of the conventional passenger car from the room inner side, and BB arrow sectional drawing of A figure (B figure). It is a perspective view showing the rear part boundary position of the window frame part and door main-body part of the conventional door.

[Embodiment 1]
Hereinafter, a passenger car door according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 4. The door of a passenger car according to the present embodiment is an application of the present invention to a front door of a passenger car.
Here, front and rear, right and left and up and down in the figure correspond to front and rear, left and right and up and down of the front door.

<About the outline of the front door 10>
As shown in FIG. 1, the front door 10 is composed of a door main body 10m and a window frame 10w provided on the upper side of the door main body 10m, and a window glass 12 is provided on the window frame 10w. It is fitted so that it can slide up and down.
The door main body 10m is a thick plate having an internal space by joining the outer panel 17 (see FIG. 2) and the inner panel 18 constituting the design surface of the front door 10 from the front and back and welding at the peripheral portions of each other. Configured. And the mechanism which moves the window glass 12 up and down, the door reinforcement member, etc. are accommodated in the internal space of the door main-body part 10m.
Further, as shown in FIG. 1, a pair of upper and lower hinge mechanisms 11 are provided at the front end position of the door main body portion 10 m, and the door main body portion 10 m is connected to the vehicle body (not shown) via these hinge mechanisms 11. Installed at the front edge of the entrance. Thereby, the front door 10 can be horizontally rotated between a fully closed position for closing the entrance / exit to the vehicle body and a fully open position for fully opening the entrance / exit. Further, a door lock mechanism (not shown) is provided at the rear end position of the door main body 10m so that the front door 10 engages with a striker of the vehicle body in a state where the entrance is closed.

As shown in FIG. 2, the window frame portion 10 w of the front door 10 includes a glass run 13 that seals the edge of the window glass 12 in a slidable state, and the glass run 13 has a L-shaped support. The frame 14 and the cylindrical door frame 15 are held in a state surrounded by three sides. A support frame 14 of the glass run 13 is fixed to the door frame 15.
As shown in FIG. 1, base end portions (lower end portions) of the door frame 15 and the support frame 14 are inserted into the door main body portion 10 m before and after the front door 10, and as described later, the door main body portion. It is fixed to a 10 m inner panel 18 or the like by welding or the like.
A one-dot chain line in FIG. 1 and a rubber weather strip 20 for a door are attached to the indoor peripheral edges of the door main body 10m and the window frame 10w of the front door 10 as shown in FIG. For this reason, when the front door 10 is closed, the weather strip 20 for doors is crushed between the front door 10 and the peripheral part of the entrance / exit, and the space between the entrance / exit and the front door 10 is sealed.

<Supporting structure of rear lower end of window frame 10w>
Next, a support structure at the rear lower end portion of the window frame portion 10w of the front door 10 will be described.
As shown in FIG. 1, the inner panel 18 constituting the door main body 10 m has lower front and rear lower ends of the window frame portion 10 w at the front end position and the rear end position of the upper end portion (belt line portion) of the door main body portion 10 m. A window frame support portion 180 is provided to support each of the two.
As shown in FIGS. 2 and 3, the window frame support portion 180 at the rear end position of the inner panel 18 has a substantially flat cross-sectional shape due to the front vertical plate portion 180f, the horizontal vertical wall portion 180y, and the rear vertical plate portion 180b. It is formed in a U shape. And the substantially U-shaped window frame support part 180 is comprised so that the door frame 15 which comprises the window frame part 10w may be covered from three directions inside a room.
Further, as shown in FIG. 3, the horizontal vertical wall portion 180 y of the window frame support portion 180 has a first wall extending in the front-rear direction along a boundary line L (see FIG. 1) between the window frame portion 10 w and the door main body portion 10 m. A first bead 182 and a second bead 184 are formed side by side.

As shown in FIG. 4, the first bead 182 and the second bead 184 protrude to the inner space side of the door main body 10 m formed by the inner panel 18 and the outer panel 17, and are grooved on the surface side of the inner panel 18. It is formed to become.
Further, as shown in FIG. 4, a reinforcing inner reinforcement 18e extending along a boundary line L between the window frame portion 10w and the door main body portion 10m is attached to the inner side of the upper portion of the inner panel 18. Further, a lock reinforcement 18k that supports the door frame 15 of the window frame 10w and supports the door lock mechanism inside the inner panel 18 is provided at the inner rear portion of the inner panel 18.
As shown in FIG. 4, the side surface of the lower end portion of the door frame 15 of the window frame portion 10 w is joined to the upper portion of the window frame support portion 180 (horizontal vertical wall portion 180 y) of the inner panel 18 by welding W. Further, the side surface of the lower end portion of the door frame 15 of the window frame portion 10 w is joined to the lock reinforcement 18 k and the weld W below the welded portion with the inner panel 18.
Here, the window frame support portion 180 of the inner panel 18 is covered with a corner portion 20c of the weather strip 20 for the door, as shown in FIG. In FIG. 3, the door weather strip 20 is omitted.

<About the function of the first and second beads 182 and 184>
Next, the function of the first bead 182 and the second bead 184 formed on the window frame support part 180 of the inner panel 18 will be described.
When the front door 10 is closed, as shown in FIG. 4, a crushing reaction force F when the door weatherstrip 20 is crushed is applied to the front door 10. In particular, on the rear end side that is the rotation free end side of the front door 10, the kinetic energy when closing the front door 10 increases, and therefore the crushing reaction force F when the door weatherstrip 20 is crushed increases. As a result, as shown in FIG. 4, the window frame portion 10w (door frame 15) having a low strength relative to the door main body portion 10m is opposed to the door main body portion 10m (inner panel 18) as indicated by a two-dot chain line. Deforms to the outside of the vehicle. Then, the window frame portion 10w (door frame 15) deformed to the outside of the vehicle is returned to its original position by its own elastic force and the elastic force of the inner panel 18 and the like. That is, the door frame 15 or the like is rotated around the boundary line L between the window frame part 10w and the door body part 10m or a straight line parallel to the boundary line L with respect to the window frame support part 180 of the inner panel 18. It vibrates indoors or outside the vehicle.

Here, a first bead 182 and a second bead 184 extending along a boundary line L between the door main body portion 10m and the window frame portion 10w are formed on the window frame support portion 180 of the inner panel 18. For this reason, when the door frame 15 vibrates so as to rotate about the boundary line L or the like with respect to the window frame support portion 180 of the inner panel 18, the window frame support portion 180 of the inner panel 18 It becomes easy to bend in the position of the 1st bead 182 and the 2nd bead 184 according to vibration. That is, the window frame support portion 180 of the inner panel 18 is positioned at the position of the beads 182 and 184 around the center line of the first and second beads 182 and 184 along the boundary line L in accordance with the vibration of the door frame 15. Bends. For this reason, the bending force when the door frame 15 vibrates is applied to the entire first bead 182 and second bead 184 of the window frame support portion 180 of the inner panel 18 and does not concentrate on a part. Therefore, it is possible to prevent problems such as cracking with time in a part of the window frame support portion 180 of the inner panel 18.
Further, by forming the beads 182 and 184 on the window frame support portion 180 of the inner panel 18, cracks in the window frame support portion 180 can be prevented, so that the cost for preventing cracks is not so high.

<Advantages of Front Door 10 According to this Embodiment>
According to the front door 10 according to the present embodiment, the bending force resulting from the vibration of the door frame 15 when closing the door is applied to the entire first bead 182 and second bead 184 of the window frame support portion 180 of the inner panel 18. And no longer concentrate on a part. Therefore, it is possible to prevent problems such as cracking with time in a part of the window frame support portion 180 of the inner panel 18.
Further, by forming the beads 182 and 184 on the window frame support portion 180 of the inner panel 18, cracks in the window frame support portion 180 can be prevented, so that the cost for preventing cracks is not so high.
In addition, since the beads 182 and 184 are formed on the window frame support portion 180 on the side of the free rotation end of the door that has the largest kinetic energy when the front door 10 is closed, the window frame support portion 180 is efficiently prevented from cracking. become able to.
The beads 182 and 184 are formed so as to protrude toward the inner space of the door main body 10 m formed by the inner panel 18 and the outer panel 17 and to form a groove on the surface side of the inner panel 18. For this reason, the beads 182 and 184 do not get in the way when the inner panel 18 and the window frame support 180 are covered with a trim or other decorative material.
In addition, since two beads 182 and 184 are provided in the height direction of the window frame support portion 180 of the inner panel 18, the bending force of the inner panel 18 on the window frame support portion 180 due to vibration of the window frame portion 10 w is reduced. It can be further dispersed.

<Example of change>
Here, the present invention is not limited to the above-described embodiment, and can be modified without departing from the gist of the present invention. For example, in the present embodiment, an example in which the beads 182 and 184 are provided on the window frame support 180 at the rear end position of the inner panel 18 is shown, but the beads 182 and 184 are also provided on the window frame support 180 at the front end position. Is also possible.
In the present embodiment, an example in which two upper and lower beads 182 and 184 are provided on the window frame support portion 180 of the inner panel 18 has been described. However, the number of beads may be one, or three or more.
Moreover, although the example which forms the bead 182 and 184 so that it may become a groove shape on the surface side of the window frame support part 180 of the inner panel 18 was shown, it may become a protrusion shape on the surface side of the window frame support part 180 It is also possible to form a bead. It is also possible to form one bead in a groove shape and the other bead in a ridge shape in accordance with the shape of the decoration material.
In the present embodiment, an example in which the present invention is applied to the front door 10 of a passenger car has been described. However, the present invention can also be applied to a rear door.

DESCRIPTION OF SYMBOLS 10 ... Front door 10m ... Door main-body part 10w ... Window frame part 15 ... Door frame 17 ... Outer panel 18 ... Inner panel 180 ... Window frame support part 182 ... 1st bead 184 ... 2nd bead L ... Boundary line

Claims (4)

A window main body configured by joining an inner panel and an outer panel at a peripheral portion of each other, and a window frame configured to be provided above the door main body and supported at the lower end by the inner panel. A door of a passenger car comprising a portion and a hinge mechanism for attaching the door main body to the vehicle body in a state in which the door body portion can be horizontally rotated so as to be able to open and close the entrance / exit of the vehicle body,
A bead extending along a boundary line between the door main body portion and the window frame portion is formed in the window frame support portion formed on the inner panel and supporting the lower end portion of the window frame portion. And passenger car door. A passenger car door according to claim 1,
The said bead is formed in the window frame support part of the said inner panel located in the rotation free end side of the said door, The door of the passenger car characterized by the above-mentioned. A passenger car door according to claim 1 or claim 2,
The door of a passenger car characterized in that the bead protrudes to the inner space side of the door main body portion formed by the inner panel and the outer panel and forms a groove on the surface side of the inner panel. . A passenger car door according to any one of claims 1 to 3,
A plurality of the beads are provided in the height direction of the window frame support portion of the inner panel.

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