JPH0634165Y2 - Door frame structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a door frame structure suitable for use in a vehicle, particularly an automobile.

[Conventional technology]

Conventionally, as shown in FIG. 3, a door mirror 17 is mounted on a door panel (front door) 15 of an automobile, and the door panel 15 on which the door mirror 17 is mounted is mounted on a corner of the door panel 15 as shown in FIG. A door frame 1 having a bent portion 16 with a bracket 18 is attached, and the frame cross-sectional shape of this door frame 1 is formed into a roll-formed open cross section as shown in FIGS. 8 and 9. A door mirror 17 (shown in FIG. 3) is attached to the other bottom portion 12 of the second channel 5 in which the door glass run holding concave portion 8 of the door frame 1 formed to have this open cross section is set. One side edge 18a of the corner bracket 18
Are fixed by welding W, and as shown in FIGS. 8 to 10, the corner bracket 18 is welded to the door frame 1 with a step 21.

Incidentally, FIG. 11 is a cross-sectional view showing the relationship between the door frame 1 and various aweather strips and the like taken along the line XI-XI in FIG.
The door glass run 4 is held in the door glass run holding recess 8 of the second channel 5 of the door frame 1, and the door glass 22 is kept watertight with respect to the vehicle compartment R by the drag glass run 4. .

Further, FIG. 12 is a “door frame structure for automobile doors” disclosed in Japanese Utility Model Publication No. 61-41021, which discloses a door frame having substantially the same cross-sectional shape as the door frame of the present application. Says, "The first channel 31 for holding the door weather strip 30 and this first channel 31
A second channel 33 for holding the door glass run 32, which is disposed adjacent to the outer side of the vehicle, and the first and second channels 31, 33 are plate members continuously formed. It is formed by bending and the bottom of the first channel 31 is 2
It is a stack of sheets, the rear surface of which is arranged so as to face the passenger compartment, and the second channel 33 separates the bottom of the stack of two sheets of the first channel 31 from the outer end position thereof.
In a door frame structure for an automobile door, which is formed by a pair of bending extensions that are bent and extended in a direction, the pair of bending extensions 34 and 35 are provided at the outer end of the bottom of the first channel 31. They are integrally connected by arc welding at each bending corner at each position. "

Furthermore, FIG. 13 is a “automobile door structure” disclosed in Japanese Utility Model Laid-Open No. 59-151724, which also discloses a door frame having substantially the same cross-sectional shape as the door frame of the present application, Specifically, the outer surface of the door frame 41 and the outer surface of the door glass 42 are substantially flush with each other, and a door glass weather strip 43 is provided on the inner periphery of the door frame 41, and between the door frame 41 and the body side. In an automobile door structure in which the door weather strips are respectively arranged, “the main door weather strip 44 is arranged on the door frame 41 at a position on the back surface side of the door glass weather strip 43, and the door frame 41 At least at the upper side of the outer periphery, at a position contacting the outer surface of the door frame 41, when the door is closed, it approaches the body 45 side to seal between the door frame 41 and the body. A sub-door weather strip 46 is provided, and a seal protrusion 47 of the sub-door weather strip 46 is interposed in a gap formed between the door frame 41 and the body 45 when the door is closed.
The projecting end surface of 47 is substantially flush with the outer surface of the door frame 41.

Furthermore, FIG. 14 shows a "vehicle door structure" disclosed in Japanese Utility Model Laid-Open No. 63-24020, in which a corner bracket is disclosed in a door frame. A door frame 54 is fixed to an upper portion of a door panel 53 composed of an inner panel 51 and a door outer panel 52, and the door frame 54 is secured to the door inner panel 51.
Is a structure of a vehicle door fixedly connected via a reinforcement 55, wherein an outer panel protruding portion 56 protruding upward is formed at an upper end portion of the door outer panel 52,
The reinforcement 55 is fixed to the outer panel protruding portion 56 '.

[Problems to be solved by the device]

However, as shown in FIGS. 8 and 9, one side edge 18a of the corner bracket 18 for mounting the door mirror is fixed to the other bottom portion 12 of the second channel 5 of the door frame 1 by welding. In this case, it is difficult for the door frame 1 having the bent cross section 16 shown in FIG. 4 to have rigidity with respect to a lateral force of the vehicle (outward of the door frame). That is, when the door frame 1 has an open cross section as shown in FIG. 8 (FIG. 9), the closing plate shown in FIG.
The torsional rigidity is extremely lower than that of the door frame 1 having a closed cross section formed by 19, and therefore, when a force in the lateral direction of the vehicle is applied to the door frame 1, it is close to the joint with the door panel 15 shown in FIG. Torsional torque is generated in the bent portion 16 of the door frame 1, and the door frame 1 having an open cross section is disadvantageous in terms of rigidity.

Therefore, in order to solve the above problem, the present invention improves and strengthens the cross-sectional shape of the door frame at the corner bracket joint part where the door mirror is mounted to improve the torsional rigidity of the door frame while minimizing the weight increase. To improve.

[Means for Solving the Problems]

Therefore, the present invention is intended to solve the above-mentioned problems by fixing a closing plate to an open cross section of a door frame at a corner bracket joining portion for mounting a door mirror to form a closed cross section.

More specifically, the present invention relates to a first channel that holds a primary door weather strip, a second channel that is disposed adjacent to the vehicle exterior side of the first channel and that holds a door glass run, and a secondary channel. A third channel for holding the door weather strip is formed by continuously bending a plate member so as to have a cross-sectional shape that is open outward, and near the door panel connecting portion on the front end side thereof. A door provided with a door frame having a bent portion that bends toward a door panel, and a corner bracket for attaching a door mirror is joined to a triangular corner portion between a front end side of the door frame and an upper end portion of the door panel. In the frame structure, a closing plate that is substantially integrated with the corner bracket is provided at the bent portion of the door frame. It passed sieved between the opening side edges of the second channel that constitutes the A-frame, and is intended to form a cross section closed is fixed.

[Action]

Door frame 1 in which a door glass run holding recess 8 is formed
The first and second open ends 13, 14 of the second channel 5 of
In addition, a blocking plate 19 (blocking plate portion 180a in FIG. 7) that obliquely closes the door glass run holding concave portion 8 is fixed by welding W by an amount corresponding to the set length of the corner bracket 18 along the door frame 1. 19 (180a) and the second channel 5 of the door frame 1 form a closed cross section, and the corner bracket 18 is welded W to the closing plate 19.

In this way, when the cross section of the door frame 1 is closed, even if the bending portion 16 is formed at the corner bracket 18 joining portion of the door frame 1, the twisting against the twisting torque acting on the bending portion 16 is performed. The rigidity is remarkably improved, the deformation of the door frame 1 is suppressed to a small extent, and moreover,
Weight gain can be minimized.

〔Example〕

1 to 6 show a first embodiment of the present invention, in which the door frame 1 is roll-formed by continuously bending a plate member. First, the relationship between the door frame 1 and various weather strips will be described.

The door frame 1 is a primary door weather strip 2
A first channel 3 for holding a door glass run 4 and a second channel 5 for holding a door glass run 4, and a second channel 5 for holding a secondary door weather strip 6. It is composed of 3 channels 7, and the door glass run holding recess (open cross section)
Among the side wall 9 on the vehicle compartment R side and the side wall 10 on the vehicle exterior side of the second channel 5 in which the opening 8 is set, the side wall 9 on the vehicle interior R side is formed longer than the side wall 10 on the vehicle exterior side.

Then, the first channel 3 is provided with a side wall 9 on the passenger compartment R side.
And the bottom portion 11 on one side holds the primary door weather strip 2, and the second channel 5 has a side wall 9 on the passenger compartment R side and the bottom portion 12 on the other side, the door glass run. Door glass run 4 in holding recess 8
Is fitted and the door glass run 4 is held by the first opening end 13 and the second opening end 14. Reference numeral 23 in FIG. 11 indicates a front pillar.

Further, as shown in FIG. 4, a bent portion 16 is formed at the vehicle front end of the door frame 1 adjacent to the door panel 15.

Thus, the door frame 1 is roll-formed into an open cross-sectional shape and holds various weather strips (2, 4, 6), and the open cross-section of the door frame 1 is shown in FIG. A method of fixing the corner brackets for mounting the door mirror 17 will be described below.

The bending of the door frame 1 at the first opening end 13 and the second opening end 14 of the second channel 5 of the door frame 1 shown in FIGS. 1, 2, 5, and 6. The closing plate 19 that obliquely closes the door glass run holding recess 8 of the second channel 5 is spanned by an amount corresponding to the set length of the corner bracket 18 including the portion 16 and both ends of this closing plate 19 are welded. W
The closing plate 19 and the second channel 5 of the door frame 1 form a closed cross section at the joint portion of the corner bracket 18 of the door frame 1.

Then, one side edge 18a of the corner bracket 18 for mounting the door mirror 17 shown in FIG. 3 is fixed to the closing plate 19 shown in FIG. 1 by welding W.

In this way, the one side edge 18a of the corner bracket 18 is closed by the closing plate 1
Since it is fixed to 9, the step 21 at the connecting portion between the door frame 1 and the corner bracket 18 as shown in FIGS. 8 and 10 of the conventional example can be eliminated.

A retainer 20 for fixing the door mirror 17 is fixed to the other side edge 18b of the corner bracket 18 shown in FIG. 1 by welding, and the corner bracket 18 is shown as shown in FIG. There is no spot welding SW on the door panel.

By the way, a negative pressure is generated in the door glass 22 during high-speed traveling due to the flow of air, and as a result, the door is sucked outward. However, the bending portion of the door frame 1 where the stress is concentrated
By closing the joint portion of the corner bracket 18 including the 16 portions into the cross-sectional shape of the door frame 1 as described in the present application, the corner portion of the door frame 1 is close to the joint portion of the corner bracket 18 and close to the door panel 15. Even if a twisting torque is applied to the bent portion 16 formed by the door suction force toward the outside of the vehicle, the twisting rigidity against the twisting torque is remarkably improved, and the door frame during high-speed traveling. It is possible to suppress the deformation of No. 1 and reduce the amount sucked out of the door.

FIG. 7 shows a second embodiment of the present invention. The difference from the first embodiment is that a corner bracket 180 in which a corner bracket 18 and a closing plate 19 which are the components of the first embodiment are integrally formed. The corner bracket 180 also forms the closing plate portion 180a so as to function as the closing plate 19 of the first embodiment so as to diagonally close the door glass run holding concave portion 8 of the second channel 5 of the door frame 1. The closing plate portion 180a of the corner bracket 180 is fixed to the door frame 1 by welding so as to form a closed cross section with the second channel 5 of the door frame 1.

[Effect of device]

As described above, according to the present invention, since the closing cross section is formed by fixing the closing plate to the open cross-section of the bent portion of the door frame at the corner bracket joining portion for mounting the door mirror, the door frame at the corner bracket joining portion for attaching the door mirror is formed. Even if the twisting torque acts outward on the door at high speed, the torsional rigidity against the twisting torque is remarkably improved, and the deformation of the door frame at high speed can be significantly suppressed. The effect is that you can do it.

[Brief description of drawings]

1 to 6 show a first embodiment of the present invention, wherein FIG. 1 is a sectional view taken along the line I-I of FIG. 4, and FIG. 2 is a view taken in the direction of arrow II of FIG. 3 is a perspective view of the entire vehicle, FIG. 4 is a side view of the front door, FIG. 5 is an exploded perspective view of a door frame, a closing plate, and a corner bracket, and FIG. FIG. 7 is a perspective view showing the assembly of the members, FIG. 7 is a sectional view corresponding to FIG. 1 showing a second embodiment of the present invention, and FIGS. 8 to 14 show respective conventional examples. FIG. 8 is a sectional view of a conventional example corresponding to FIG. 1, FIG. 9 is a sectional view of another conventional example, FIG. 10 is a perspective view of FIG. 8, and FIG. 11 is a door frame and various wafers. FIG. 12 is a sectional view showing the relationship with the strip and the like, FIG. 12 is a sectional view corresponding to FIG. 11 showing a conventional example (1) disclosed in the publication, and FIG. 13 is a conventional example (2) disclosed in the publication. To To Figure 11 corresponding sectional view, FIG. 14 is a perspective view showing a conventional example disclosed in publication (3). 1 ... door frame 2 ... primary door weather strip 3 ... first channel 4 ... door glass run 5 ... second channel 6 ... secondary door weather strip 7 ... third channel 8 ... … Door glass run holding recess 9 …… Side wall on the passenger compartment side 10 …… Side wall on the outside of the car 18 …… Corner bracket 19 …… Closing plate R ……

Claims (1)

[Scope of utility model registration request] 1. A first channel for holding a primary door weather strip, a second channel for adjoining an outer side of the first channel for holding a door glass run, and a secondary door weather. A third channel for holding the strip is formed by continuously bending a plate member so as to have a cross-sectional shape that is open toward the outside, and in the vicinity of the door panel connecting portion on the front end side thereof in the door panel direction. A door frame structure in which a door frame having a bent portion that bends toward a door frame is provided, and a corner bracket for attaching a door mirror is joined to a triangular corner portion between the front end side of the door frame and the upper end portion of the door panel. In the above, a closing plate that is substantially integrated with the corner bracket constructs the door frame at the bent portion of the door frame. A structure of a door frame, which is provided so as to be bridged between both side edges of the opening of the second channel that is formed and fixed so as to form a closed cross section.