JPH0224978B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a mounting structure for a locking device for fixing an opening/closing body such as a door to an automobile body.

(Prior Art) As an example of an automobile equipped with a conventional locking device, the one shown in FIG. 1 is known. In the figure, 1 is a van type car,
A back door 4 serving as an opening/closing body is attached to the rear of the vehicle body 2 of the automobile 1 via a hinge 3 so as to be openable and closable. 5 is a lock mechanism attached to the back door 4 side, and this lock mechanism 5 and the striker 6 fixed to the vehicle body 2 side are connected to the back door 4 side.
When the doors are closed, they engage with each other to fix the back door 4 to the vehicle body 2. FIG. 2 is a detailed diagram showing the mounting structure of a conventional locking device. In the same figure, 1
0 is a flat rear floor panel, and this rear floor panel 10 has an inclined wall 12 at the rear thereof and a cross section L.
It has a letter-shaped flange 14. Reference numeral 15 designates an inner panel of the rear end cross member 16. This inner panel 15 has a bent portion 17 having a substantially L-shaped cross section, and first and second flanges 18 and 19 are provided at the upper and lower ends of this bent portion 17, respectively. is formed and extends in the vehicle width direction as a whole. 2
3 is an outer panel of the rear end cross member 16, and this outer panel 23 is connected to the first flange 2.
4 and a first flange 24 projecting downward from the first flange 24.
a bent portion 25; a second bent portion 26 having a substantially F-shaped cross section and protruding toward the rear of the vehicle body;
6 and a second flange 27 that projects downward, and extends in the vehicle width direction as a whole. The second flange 19 and the second flange 27 are joined by spot contact, and as a result, a space 29 is formed between the inner panel 15 and the outer panel 23. Further, the first flange 18 and the first flange 24 are joined to the inclined wall 12 and the flange 14, respectively, by spot welding. As a result, the rear floor panel 10, the inner panel 15, and the outer panel 23 form a box-shaped cross section to form a closed space inside. The striker 6 is fixed to the upper surface of the inclined wall 12 with bolts 35 and nuts 36 via a stiffener (reinforcing plate) 34. As a result, the striker 6 protrudes more than the general surface 37 of the rear floor panel 10. Note that the general surface 37 of the rear floor panel referred to here refers to the rear floor panel 10 on the front side from the inclined wall 12. 38 is a floor carpet laid on the rear floor panel 10. Said flange 1
4 and the first flange 24 is fitted with a weather strip 40. 42 is a rear bumper of the automobile 1, and this rear bumper 42 is arranged behind the outer panel 23. 4
4 is a kicking plate. The locking mechanism 5 and the striker 6 collectively constitute a locking device 7.

(Problem to be Solved by the Invention) However, with such a conventional locking device mounting structure, there is a risk that the striker 6 and the locking mechanism 5 may become disengaged when the automobile 1 receives a rear collision. There was a problem. The reason for this is that when the rear bumper 42 is deformed toward the passenger compartment due to a rear collision, the rear end cross member 1
The outer panel 23 of No. 6 receives an external force F directed toward the vehicle interior by the deformed bumper 42. Due to this external force F, the rear part of the rear floor panel 10 and the lower part of the inner panel 15 are subjected to component forces f ₁ and f ₂ toward the interior of the vehicle.
receive. At this time, the inner panel 15 has high rigidity because it is attached to a side member (not shown), and therefore its lower part does not deform even if it receives the component force _f2 . On the other hand, the portion of the rear part of the rear floor panel 10 to which the striker 6 is attached is prevented from deforming downward by the engagement between the striker 6 and the lock mechanism 5. Therefore,
When a rear collision occurs, the rear portion of the rear floor panel 10, where the striker 6 is attached, deforms in a vertically undulating manner, and the outer panel 23 as a whole moves toward the front of the vehicle body and deforms. This is because, as a result, the striker 6 moves toward the front and upper side of the vehicle body, where it is likely to be disengaged.

In addition, although cargo is generally placed on the rear floor panel 10, when loading or unloading the cargo, the striker 6 protrudes above the rear end of the rear floor panel 10, so the striker 6 may interfere with the cargo. There is also the problem that there is a risk of damaging the baggage, and that it is difficult to load and unload the baggage.

(Objective of the Invention) Therefore, the object of the present invention is to improve the ease of loading and unloading cargo while also keeping the components of the locking device (striker or locking mechanism) attached to the vehicle body stationary even when the vehicle receives a rear collision. The point is to make it happen.

(Means for Solving the Problems) The configuration of the present invention to achieve this object includes a rear end cross member in which an outer panel and an inner panel are joined to form a space at the rear lower part of a flat rear floor panel. A mounting structure for a lock device, wherein either a striker or a lock mechanism that engages and disengages from the striker is attached to the rear end cross member, and the other of the striker or the lock mechanism is fixed to the opening/closing body. The rear end of the rear floor panel is bent downward from the panel into an L-shape, and an opening is formed in this L-shaped bent part through which the striker on the opening/closing body side or the other of the locking mechanisms advances and retreats, and the opening is inserted into the space and into the opening. A bracket is disposed at a position corresponding to the vehicle body, and the bracket has a U-shaped cross section and includes an upper plate extending in the longitudinal direction of the vehicle body and a pair of side walls that are continuous with both ends of the upper plate and protrude downward from the upper plate. a bent portion of the top plate; first and second flanges that are continuous to the front end of the top plate and the front ends of the pair of side walls and protrude outward; and a vertical wall that is continuous to the rear end of the top plate and projects downward from the top plate. , the first and second flanges are fixed to the inner panel, the lower end of the vertical wall is sandwiched between the inner panel and the outer panel and integrally joined to the inner panel and the outer panel, and the upper plate is connected to the inner panel and the outer panel. The present invention is characterized in that either the striker or the locking mechanism is mounted so as to be located below the rear floor panel excluding the L-shaped bent portion.

(Function) In the present invention, either the striker or the lock mechanism is attached to the highly rigid inner panel of the rear end cross member via the bracket, so that the outer panel and rear floor panel are not deformed by the rear collision. Even when the striker and the lock mechanism are connected to each other, the striker and the lock mechanism are not affected by a rear-end collision and are reliably maintained. In addition, the striker or lock mechanism attached to the rear end of the vehicle is located below the general surface of the rear floor panel, which prevents interference between the striker or lock mechanism and the load when loading and unloading cargo, thereby preventing damage to the cargo. Improves loading and unloading efficiency.

(Example) Hereinafter, an example of the present invention will be described based on the drawings. Note that the same parts as those in the prior art are given the same reference numerals, and the description thereof will be omitted. In Figure 3, 48
is a rear floor panel formed in a flat shape, and this rear floor panel 48 has a bent portion 51 with an L-shaped cross section at the rear thereof, and a flange 53 with an L-shaped cross section whose upper end is continuous with the rear end of the bent portion 51,
It extends in the width direction of the vehicle as a whole. The outer panel 23 and the inner panel 15 are joined to the rear lower part of the rear floor panel 48 to form a rear cross member 16 in which a space 29 is formed.
The bent portion 51 is formed with an opening 54 through which either a striker 64 or a locking mechanism 68 attached to the back door 4 as an opening/closing body, which will be described later, moves forward and backward. Therefore, the rear part of the rear floor panel 4 has a single step shape as a whole. Reference numeral 56 denotes a striker mounting bracket, and as shown in detail in FIG. 4, this bracket 56 is continuous with an upper plate 58 extending in the longitudinal direction of the vehicle body and both ends of the upper plate 58 and projects downward from the upper plate 58. A bent portion 57 having a U-shaped cross section and consisting of a pair of side walls 60; a vertical wall 59 that continues to the rear end of the upper plate 58 of the bent portion 57 and projects downward; and the front end of the upper plate 58 and the pair of side walls of the bent portion 57. 60
The bracket 56 is comprised of a first flange 61 and a second flange 62 that are continuous to the front end and protrude outward, and a pair of holes 63 are formed in the upper plate 58 of the bracket 56. The first flange 61 and the second flange 62 of the bracket 56 are joined to the inner surface of the bent portion 17 by spot welding, and the lower end of the vertical wall 59 is connected to the second flange 19 and the second flange 27. The vertical wall 59, the second flange 19, and the second flange 27, which are sandwiched between them, are integrally joined by spot welding.
Furthermore, a striker 64 is mounted on the upper surface of the upper plate 58 directly below the opening 54, and only its head 65 is attached to the upper surface of the upper plate 58 directly below the opening 54.
It is attached by bolts 66 and nuts 67 inserted into the pair of holes 63, respectively, so as to protrude from the holes 63. As a result, striker 64
is attached to the inner panel 15 via a bracket 56 and is housed in the space formed between the inner panel 15 and the outer panel 23, and its head 65 may protrude from the general surface 37 of the rear floor panel. It is installed in such a way that it is located at the bottom so that there is no problem. Note that the rear floor panel general surface 37 referred to here refers to the bent portion 5.
1, that is, the rear floor panel 48 excluding the bent portion 5. Further, a lock mechanism 68 is attached to the inner panel of the back door 4, and the lock mechanism 68 and the striker 64 engage with each other to fix the back door 4 to the vehicle body 2 when the back door 4 is closed. The locking mechanism 68 and the striker 64 collectively constitute a locking device 69.

In the mounting structure of the locking device 69 of this embodiment,
If the car is involved in a rear-end collision, inner panel 1
Since the rear floor panel 5 has high rigidity, its lower part will not deform even if it receives the component force _f2 , but the rear floor panel 4
The rear portion of the outer panel 23 is compressed and buckled by the component force _f1 , and the outer panel 23 is deformed so as to move toward the front of the vehicle body as a whole. However, the striker 64 strikes the bracket 5 on the stationary inner panel 15.
Since the rear floor panel 48 is attached and deformed through the rear panel 6 and is separated from the rear part and the outer panel 23, the striker 64 remains stationary even if the vehicle is subjected to a rear collision, and the engagement between the striker 64 and the lock mechanism 68 is prevented. It never comes off.

In this embodiment, a relatively spherical locking mechanism 68 is attached to the back door 4 side instead of a striker 64 having a protruding head 65, so that when the back door 4 opens, the danger to the worker's head is reduced. can be reduced. Furthermore, the folded portion 51 of the rear floor panel 48 is stepped and formed lower than the general surface 37, and the striker 64 is housed in the space 29 formed between the inner panel 15 and the outer panel 23, so that the back door 4 can be opened. The actual opening area at the rear of the vehicle body increases. Moreover, since the bracket 56 and the highly rigid inner panel 15 are joined to form a box-shaped cross section, the rigidity of the bracket 56 is improved.

(Effects of the Invention) As explained above, in this invention, even when a car receives a rear collision, the striker or lock mechanism attached to the vehicle body remains stationary, so the engagement between the striker and the lock mechanism is prevented. A stabilizing effect can be obtained. Furthermore, since either the striker or the locking mechanism is housed in the space of the rear end cross member and is installed below the general surface of the rear floor panel, the striker or locking mechanism can damage cargo when loading or unloading cargo. This improves the ease of loading and unloading cargo. Furthermore, since the rear end of the rear floor panel is bent downward into a step-like shape, the actual opening area at the rear of the vehicle body increases, improving the ease with which cargo can be loaded.

[Brief explanation of drawings]

Figure 1 is a perspective view of a van-type vehicle equipped with a conventional locking device with the back door open;
FIG. 2 is a sectional view showing a conventional locking device mounting structure, FIG. 3 is a sectional view showing an embodiment of the locking device mounting structure according to the present invention, and FIG. 4 is a perspective view of a bracket. 1...Car, 2...Car body, 4...Opening/closing body,
5, 68... Lock mechanism, 6, 64... Striker, 15... Inner panel, 16... Rear end cross member, 23... Outer panel, 29...
Space portion, 48...Rear floor panel, 51...Bending portion, 54...Opening hole, 56...Bracket,
57...Bending portion, 58...Top plate, 59...Vertical wall, 60...Side wall, 61...First flange, 62
...Second flange, 69...Lock device.

Claims (1)

[Claims] 1. A flat rear floor panel has a rear end cross member in which an outer panel and an inner panel are joined to form a space at the rear lower part of the flat rear floor panel, and either a striker or a lock mechanism that engages and disengages the striker is attached to the rear end cross member. In the locking device mounting structure in which one of the strikers or the locking mechanism is fixed to the opening/closing body, the rear end of the rear floor panel is bent downward from the panel into an L-shape;
An opening is provided in this L-shaped bent portion through which the striker on the opening/closing body side or the other of the locking mechanisms advances and retreats, and a bracket is disposed within the space and at a position corresponding to the opening. A bent portion having a U-shaped cross section and consisting of an upper plate extending in the front-rear direction and a pair of side walls that are continuous with both ends of the upper plate and protrude downward from the upper plate, and a bent portion at the front end of the upper plate and the front ends of the pair of side walls, respectively. It is composed of first and second flanges that continuously protrude outward, and a vertical wall that continues to the rear end of the upper plate and protrudes downward from the upper plate, and fixes the first and second flanges to the inner panel. At the same time, the lower end of the vertical wall is sandwiched between the inner panel and the outer panel and integrally joined to the inner panel and the outer panel, and one of the striker or the locking mechanism is attached to the upper plate lower than the rear floor panel excluding the L-shaped bent part. A mounting structure for a locking device, characterized in that the locking device is mounted so as to be located at .