JP2877441B2 - Vehicle side door structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a vehicle side door structure such as a front door or a rear door.

[Conventional technology]

Conventionally, as shown in, for example, Japanese Utility Model Application Laid-Open No. 54-146510, a bent portion extending along the wall surface of a door is formed at an end of an impact bar provided in a side door, and this bent portion is formed. It is known that the impact bar is fastened together with a door latch to a wall surface of the door to prevent the impact bar from peeling off from the wall surface of the door at the time of a side collision of the vehicle and a fall.

[Problems to be solved by the invention]

When the door latch is attached to the bent portion protruding from the impact bar of the side door as described above, when the impact bar is bent at the time of collision of the vehicle, the mounting angle of the door latch changes, and this door latch and There are problems such as the engagement state with the striker attached to the vehicle body-side member being disengaged and the engagement state being unable to be released after a collision.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and effectively protects a door lock of a side door at the time of a side collision of a vehicle with a simple configuration, and disengages an engagement state between a door latch and a striker. It is an object of the present invention to provide a vehicle side door structure capable of preventing the above-mentioned engagement state from being difficult to be released after a collision.

[Means for solving the problem]

The invention according to claim 1 is a side door structure in which a door latch is disposed at a rear portion of the side door, wherein a reinforcement for reinforcing a rear wall portion of the door inner panel is provided, and the reinforcement and the door inner panel are provided. A closed cross section surrounding the installation portion of the door latch is formed by the rear wall portion.

The invention according to claim 2 is a side door structure of a vehicle in which an impact bar is mounted inside a side door and a door latch is disposed at a rear portion of the side door, wherein the rear portion of the impact bar, a door inner panel, And a closed section surrounding the installation portion of the door latch is formed by the connection bracket, the rear end of the impact bar, and the rear wall of the door inner panel.

According to a third aspect of the present invention, a rear end portion of the impact bar is provided with a protruding portion protruding inward of the vehicle body, and the protruding portion is led out of the side door. In the closed state, a locking portion facing the front surface of the protruding portion is formed.

According to a fourth aspect of the present invention, in the vehicle side door structure according to the second aspect, the impact bar is installed in a rearwardly inclined state, and the rear end is provided in a door lock installation portion. is there.

According to a fifth aspect of the present invention, in the vehicle side door structure according to the second aspect, a flange portion is provided on an upper portion of the connection bracket, and the flange portion covers an upper surface of an installation portion of the door latch. It is.

[Action]

According to the first aspect of the present invention, since the installation portion of the door latch constituting the door lock of the side door is reinforced by the closed cross section formed by the rear wall of the side door and the reinforcement, the vehicle is provided. It is possible to prevent the locked state of the door lock from being disturbed at the time of collision.

According to the second aspect of the present invention, the installation portion of the door latch constituting the side door lock mechanism includes a rear portion of the impact bar disposed in the side door, a rear wall portion of the door inner panel, and Since the door is reinforced by the closed cross section formed by the connecting bracket and the connecting bracket, it is possible to prevent the locked state of the door lock from being disturbed at the time of a vehicle collision.

According to the third aspect of the invention, at the time of a side collision where a bumper or the like of the accident vehicle hits the side surface of the side door, the projection formed at the rear end of the impact bar is formed on the vehicle body side member. Since the deformation of the side door is suppressed by being brought into contact with the stop portion and thereby the side door is suppressed from being deformed, it is possible to effectively prevent the locked state of the door lock from being disturbed at the time of a vehicle collision.

According to the fourth aspect of the present invention, the rear end of the impact bar is disposed on the installation portion of the door lock located above the belt line, so that the impact bar is prevented from being impacted at the time of a side collision of the vehicle. Even when the rear end moves toward the interior of the vehicle, the rear end is prevented from contacting the waist of the occupant sitting on the seat.

According to the fifth aspect of the present invention, since the upper surface of the installation portion of the door latch is covered with the flange portion, the locked state of the door lock is released by the tool inserted from the gap between the door glass and the door panel. This prevents the water that has entered from the gap or the like from adhering to the door lock.

〔Example〕

1 and 2 show an embodiment of the side door structure according to the present invention. As shown in FIG. 3, the side door includes a front door 1 and a rear door 2. In the front door 1 and the rear door 2, impact bars 3, 4 extending in the front-rear direction of the vehicle body are provided. ing. The impact bar 3 in the front door 1 has a belt line portion to which a load is input at the time of a side collision at the front end,
In other words, it is attached to the part where the bumper or the like of the accident vehicle is likely to hit, and the rear end is attached to the installation part of the door lock 5 located above the belt line part. is set up.

The impact bar 4 of the rear door 2 is attached to the belt line with its front end offset below the rear end of the impact bar 3 of the front door 1 and its rear end is located above the belt line. The door lock 6 is mounted on the installation portion of the door lock 6 so that the door lock 6 is installed in an upwardly inclined state.

As shown in FIG. 4, each of the impact bars 3 and 4 has a plate member 7 disposed outside the vehicle and a beam member 8 having a U-shaped cross section joined to the inner wall surface of the plate member 7. And
An extension 9 extending rearward of the vehicle body and a projection 10 projecting inward of the vehicle body at the rear end of the extension 9 are provided at the rear of the plate member 7. And the first
As shown in FIG. 2 and FIG. 2, the extension portion 9 is welded or bolted while the projection 10 of the impact bar 3 is led out of the door through an opening formed in the door inner panel 11. It is fixed to the wall surface of the door inner panel 11 located outside the vehicle by means. Note that a protector 12 made of a plastic material, synthetic rubber, or the like is attached to the protruding portion 10 led out of the door.

The rear ends of the beam members 8 of the impact bars 3 and 4 are connected to a wall surface located inside the door inner panel 11 via a connection bracket 13 extending in the vehicle width direction. A closed section 14 is formed by a rear portion of the impact bar 3 and a rear wall 11a of the door inner panel 11, and the door latches 15 of the door locks 5 and 6 are formed in the closed section 14.
Are arranged respectively. As shown in FIG. 5, a flange portion 16 extending to the rear side of the vehicle body is formed on the upper portion of the connection bracket 13, and the upper surface of the installation portion of the door latch 15 is covered by the flange portion 16. I have. Then, the installation portion of the striker 17 to be engaged with the door latch 15, that is, the center pillar 18 and the rear fender panel
A bracket 20 for installing a sealant is attached to the vehicle body side member consisting of the front surface of 19, and the rear end of the bracket 20 faces the front surface of the protruding portion 10 when the front door 1 and the rear door 2 are closed. Locking portion 21 is formed.

A connecting bracket 13 is provided for connecting the rear portions of the impact bars 3 and 4 disposed in the side doors including the front door 1 and the rear door 2 to the inner wall surface of the door inner panel 11 as described above. The bracket 13, the rear portions of the impact bars 3, 4, and the rear wall portion 11a of the inner panel 11 form a closed cross section 14 surrounding the installation portion of the door latch 15 of each of the door locks 5, 6. Fifteen installation parts will be reinforced by the closed section 14. Therefore, even if the rear end of the rear door 2 is crushed by the rear fender 19 or the rear end of the front door 1 is crushed by the center pillar 18, the installation portion of the door latch 15 is deformed. And the locked state can be properly maintained.

Further, in the above embodiment, since the flange 16 is provided on the upper portion of the connection bracket 13 and the upper surface of the installation portion of the door latch 15 is covered by the flange 16, the tool inserted from the gap between the door glass and the door panel is provided. As a result, the locked state of the door locks 5 and 6 is released, and the vehicle is stolen.
Rust can be prevented from being adhered to 6.

At the rear ends of the impact bars 3 and 4 attached inside the side doors as described above, a protruding portion 10 protruding inward of the vehicle body is provided, and the protruding portion 10 is led out of the door. In the case where the locking portion 21 facing the front surface of the protruding portion 10 is formed in the seal member mounting bracket 20 attached to the vehicle body side member, the side door enters the vehicle interior at the time of a side collision of the vehicle. Can be prevented. That is, for example, when a bumper or the like of an accident vehicle hits the front door 1 and the impact bar 3 is deformed and moves toward the inside of the vehicle, the protrusion 10 protruding from the rear end is attached to the center pillar 18. Locking portion 21 of bracket 20
, The impact bar 3 is prevented from further deforming and moving.
This prevents the front door 1 from entering the vehicle interior.

If the bumper of the accident vehicle hits the rear door 2, the projection 10 of the impact bar 4 is attached to the rear fender panel 19 by a bracket 20.
The rear door 2 is prevented from entering the inside of the vehicle by being brought into contact with the locking portion 21 and locked.

In the above embodiment, the bracket for installing the sealing material is used.
Although the example in which the locking portion 21 is provided on the 20 has been described, as shown in FIG. 6, the rear fender panel constituting the vehicle body side member
A concave portion 22 is formed on the wall surface of 19, and the front surface of the concave portion 22 is configured to face the projecting portion 10 of the impact bar 3,
Alternatively, as shown in FIG.
It is also possible to adopt a configuration in which a bracket 23 for forming the locking portion 21 is attached to a vehicle body side member such as.

Also, as shown in FIG. 8, at the rear ends of the impact bars 3 and 4, a projection formed of a guide pin 24 is formed, and as shown in FIG. An engaging hole 25 corresponding to the guide pin 24 is formed, and the engaging hole 25 is configured to be covered by a hole cover 26.
By penetrating through the hole cover 26 and entering into the engagement hole 25, the two may be engaged to suppress deformation of the impact bars 3, 4. Thus, the engagement hole
In the case where a locking portion made of 25 is provided,
There is an advantage that it can be used as a coating hole for the next rust preventive oil. Incidentally, as shown in FIG. 10, a structure in which a hole cover 27 allowing insertion of the guide pin 25 may be provided.

Further, in the above embodiment, as shown in FIG. 3, the impact bars 3, 4 in the front door 1 and the rear door 2 are installed so as to be inclined rearward and upward, so that the impact bars 3, 4 at the time of side collision of the vehicle are installed. Even when the end moves toward the interior of the vehicle, the rear end can be prevented from contacting the waist of the occupant sitting on the seat. By offsetting the front end of the impact bar 4 of the rear door 2 to a position below the rear end of the impact bar 3 of the front door 1, when a force for moving the rear door 2 forward acts upon a rear-end collision of the vehicle, Further, it is possible to prevent a deadlock phenomenon in which the front edge of the rear door 2 is covered by the rear edge of the front door 1 and opening and closing of the front door becomes difficult.

That is, when the rear end of the rear door 2 is pushed forward during a rear-end collision of the vehicle, the impact bar 4 is inclined in a direction in which the inclination angle of the impact bar 4 is increased with its upper front end as a fulcrum, that is, the counterclockwise direction in FIG. When the rear door 2 rotates in a direction in which the lower portion of the rear door 2 that forms the abutting portion with the front door 1 is separated from the front door 1, the occurrence of the deadlock phenomenon is prevented.

As shown in FIG. 11, the reinforcement 28 extends in the width direction along the rear wall 11a of the door inner panel 11.
Both ends of the reinforcement 28 are joined to the outer wall surface 11b and the inner wall surface 11c of the door inner panel 11 to reinforce the rear wall 11a, and the reinforcement 28 is provided. The door latch 15 may be installed in a closed cross section 14 formed by the rear wall portion 11a and the rear wall portion 11a.In this case, the installation portion of the door latch 15 may be installed without providing the impact bars 3 and 4. Can be reinforced.

〔The invention's effect〕

As described above, the present invention provides, at the rear part in the side door, a reinforcement for reinforcing the rear wall part of the door inner panel, or a connection bracket for connecting the rear part of the impact bar and the door inner panel. As a result, since the closed section that reinforces the installation portion of the door latch is formed, the installation portion of the door latch is effectively prevented from being deformed at the time of a vehicle collision, and the engagement state of the door lock is disengaged by the impact load at the time of collision. It is possible to effectively prevent the door lock from being unlocked after the collision.

Also, at the rear end of the impact bar disposed in the side door, a protrusion protruding inward of the vehicle body is provided, and a locking portion facing the front surface of the protrusion is provided on the vehicle body side member. In this case, at the time of a side collision of the vehicle, the projecting portion of the impact bar is engaged with the locking portion to suppress deformation and movement of the impact bar, and the impact bar can effectively prevent deformation of the side door. This has the advantage that the locked state of the door lock can be properly maintained.

[Brief description of the drawings]

1 is a plan sectional view showing a main part of a front door according to an embodiment of the present invention, FIG. 2 is a plan sectional view showing a main part of the rear door, and FIG. 3 is provided with a side door structure of the present invention. FIG. 4 is a schematic side view of the vehicle, FIG. 4 is a perspective view showing a configuration of an impact bar, FIG. 5 is a perspective view showing a configuration of a connection bracket, and FIG.
FIG. 2 is a diagram corresponding to FIG. 2 showing another embodiment of the present invention, FIG. 7 is a diagram corresponding to FIG. 2 showing still another embodiment of the present invention, and FIG. 8 and FIG. FIG. 10 is a plan sectional view showing a modification of the hole cover, and FIG. 11 is a plan sectional view showing still another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 ... Front door, 2 ... Rear door, 3, 4 ... Impact bar, 10 ... Projection part, 11 ... Door inner panel, 13 ... Connection bracket, 14 ... Closed section, 15 ... Door latch, 16 ... Flange part, 18 ... Center pillar (Vehicle side member), 19: rear fender panel (vehicle side member), 21: locking portion, 22: concave portion (locking portion), 24: guide pin (projecting portion), 25: engaging hole (locking portion) ), 28 ... Reinforcement.

Continuation of the front page (56) References JP-A-58-185317 (JP, A) JP-A 1-1111015 (JP, U) JP-A 63-197726 (JP, U) JP-A 62-2722 (JP) , U) Japanese Utility Model Showa 58-113523 (JP, U) Japanese Utility Model Showa 57-84113 (JP, U) Japanese Utility Model Showa 55-35159 (JP, U) Japanese Patent Publication No. 3-36691 (JP, B2) 3-11049 (JP, Y2) (58) Fields investigated (Int. Cl. ⁶ , DB name) B60J 5/00 B60J 5/04

Claims (5)

(57) [Claims] 1. A side door structure in which a door latch is disposed at a rear portion of a side door, wherein the reinforcement is provided by a reinforcement for reinforcing a rear wall portion of a door inner panel and a rear wall portion of the door inner panel. A side door structure for a vehicle, wherein a closed cross section surrounding an installation portion is formed. 2. A vehicle side door structure in which an impact bar is mounted inside a side door and a door latch is disposed at a rear portion of the side door, wherein the rear portion of the impact bar is connected to a door inner panel. A side surface of the vehicle, wherein the connecting bracket, the rear end portion of the impact bar, and the rear wall portion of the door inner panel form a closed section surrounding the installation portion of the door latch. Door structure. 3. A rear end portion of the impact bar is provided with a projecting portion projecting inward of the vehicle body, and the projecting portion is led out of the side door. 3. The side door structure for a vehicle according to claim 2, wherein a locking portion facing the front surface of the projecting portion is formed in the state. 4. The side door structure for a vehicle according to claim 2, wherein the impact bar is installed in a rearwardly inclined state, and a rear end of the impact bar is installed in a door lock installation portion. 5. The vehicle side door structure according to claim 2, wherein a flange portion is provided on an upper portion of the connection bracket, and the flange portion covers an upper surface of a mounting portion of the door latch.