JPH0321292Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a door opening prevention device that is locked between the back door of the upper hinge of a van-type vehicle and the seat back of a folding seat.

[Prior Art] In general, a van or wagon-type vehicle for both cargo and passenger use has a large back door hinged at the upper end for loading and unloading luggage at the rear of the vehicle body, and a large rear door with an upper hinge for loading and unloading luggage. The seat bag is sometimes folded backwards so that it is almost flush with the seat cushion, converting it into a flat bed. When used as the bed mentioned above,
The door can be opened only when a passenger on the bed operates the back door to open it, and when the rear seat is in its original seating position, the door can be opened by operating the outside handle of the back door from outside the vehicle. was desired.

[Purpose of the invention] This invention was made in view of the above-mentioned problems.When using the rear seat of a van-type vehicle as a seating seat, it is possible to easily operate the outside handle of the back door from outside the vehicle. When this door can be flipped open and the seat back is tilted backwards to create a nearly flat bed, the door can only be opened by the occupant on the bed opening the back door. The present invention aims to provide a device for preventing the opening of a back door.

[Structure of the invention] That is, this invention is designed to lock between the back door of the upper hinge of a van-type automobile and the seat back of the folding rear seat, and has a U-shaped engagement part and the above-mentioned A striker is fixed at both ends to the periphery of the back of the seat back, two holes are drilled in the lower edge of the inner plate of the back door at two places, upper and lower, and a hook-shaped hook is exposed through the hole in the lower part, and the hole in the upper part is The handle is exposed through the hole, and a locking member pivotally supported by a support bracket fixed to the interior of the back door and a locking piece protruding from the back of the locking member are always biased to one side. This is an opening prevention device for a backdoor, which is constructed with a tension spring, and in which an engaging portion of the striker engages and disengages from a hook-shaped hook when the seat back is tilted backward.

[Embodiment] An embodiment in which a back door opening prevention device using a seat of this invention is applied to a van-type vehicle will be described in detail below with reference to the drawings.

First, FIG. 1 is a side view of the rear of an automobile equipped with the back door opening prevention device of this invention, and FIG. 2 is an overall side view of a van-type automobile. As shown in Fig. 2, there is a large back door 4 hinged at the top end for loading and unloading luggage at the rear of the cabin, and seats S1 and S2 in each row in the cabin, as well as the rear seats in the third row. The seat back 1 of the S3 is folded backward to be almost flush with the seat cushion 8 of the rear seat S3, and used by converting it into a flat bed.

Next, Fig. 3 is a perspective view of the striker side of the seat bag 1, Fig. 4 is a perspective view of the lock member and the support shaft, Fig. 5 is a perspective view of the support bracket, and Fig. 6 is a perspective view of the door according to this invention. FIG. 2 is a perspective view of the main part of the back door incorporating an opening prevention device.

In these figures, as shown in FIG. 3, at the center position of the upper edge of the back surface of the seat back frame 2 of the seat back 1, the U-shaped striker engaging portion 3' is turned to one side in the width direction of the seat. Striker 3 is made of protruding round bar material and pressed at both ends.
However, both ends are secured with bolts.

Next, the lock member 10 shown in FIG. 4 is an integrally molded product made of synthetic resin, typically polyacetal resin. The entire body is L-shaped, and a pivot hole 15 is bored in the center, and the handle 12 is bent upward from the pivot hole 15 in a dogleg shape. The locking member 10 opens from the central thick portion toward the handle 12 in a direction substantially perpendicular to the aforementioned handle 12, is recessed in a U-shape, has a locking portion 14, and has a sloped tip. A hook-shaped hook 13 is formed, and a locking piece 9 is formed in a tapered shape to protrude from the center of the lock member 10 in a direction opposite to the hook-shaped hook 13.

Next, the support bracket 6 shown in FIG. 5 is disposed at the center of the lower edge of the back door inner plate 5 of the back door 4, facing inward of the door, and has both ends bent to have a U-shaped cross section. This bent piece has pivot holes 63, 63 at a predetermined height position. A square hole 62 is bored in one side of the central fixing surface 61 of the support bracket 6, and furthermore, fixing holes 66, 66 are provided.
are similarly bored at the upper and lower ends of the central fixing surface 61.

Here, the combination of the support bracket 6 and the lock member 10 is such that the bent pieces at both ends of the support bracket 6 are opened outward from each other, and both pivot holes 63, 63 are opened.
Then, the pivot hole 15 of the lock member 10 is aligned with the pivot hole 15 of the lock member 10, and the hook-shaped hook 13 of the lock member 10 is kept protruding from the square hole 62.
But it's a combination. As shown in FIGS. 1 and 6, upper and lower perforation holes 5 are pre-drilled in the central convex portion of the lower edge of the back door inner plate 5.
2 and 53, the handle 12 and the hook-shaped hook 13 are respectively faced and fastened with bolts or the like,
The conventional back door 4 locking system (not shown) operates separately.

Note that a tension spring 7 is installed between the tip of the locking piece 9 on the back side of the lock member 10 and the lower end of the back door inner plate 5.
is stretched, and urges the locking piece 9 downward. At this time, the hook-shaped hook 13 comes into contact with the upper edge of the lower drilled hole 53 and stops.

[Function] The function of the lock device for the door opening prevention device according to this invention will be explained. First, as shown in FIG. 1, when the seat bag 1 is tilted backward, the engaging portion 3' of the striker 3 presses the bottom surface of the U-shaped locking portion 14 of the hook-shaped hook 13, and the locking portion 14
, and the back door 5 is locked to the back surface of the rear seat back 1 of the rear seat S3. On the other hand, when it is desired to release the rearward tilt of the seat bag 1, the engagement with the hook-shaped hook 13 is released by simply lifting the lever of the normal reclining device 30.

On the other hand, after tilting the seat back 1 backward to convert it into a bed, in order to open the back door 4 by operating it from inside the vehicle, it must be located below the door trim 51 and at approximately the same height as the bed surface. Pull the handle 12 slightly extending from the upper side of the drilled hole 52 in the back door inner plate 5 toward the interior of the room, and also operate the normal opening/closing lock handle (not shown) of the back door 4 to open the back door 4.
can be opened. Conversely, even if the rear seat S3 in the vehicle interior is stretched out on the bed and the back door 4 that has been opened is to be closed, this can be easily done, and the slope at the end of the hook-shaped hook 13 can be easily connected to the striker 3 on the seat side. It engages with the locking portion 14 and stops.

[Effects of the invention] According to this invention, when the aforementioned rear seat is converted into a bed and used, it is possible to prevent the rear door from being opened inadvertently while the vehicle is running. Further, the components of the locking device for the door opening prevention device of this invention include a striker 3, a support bracket 6 made of a thin plate, a locking member 10 made of polyacetal resin, a support shaft 11, and important parts of the back door inner plate 5. Only the drilling holes 52 and 53 are required, and these are fastened to the seatback frame 2 of the attached parts and the backdoor inner plate 5, and function sufficiently against lateral forces, and once engaged. The combination of the striker 3 and the locking member 10 has the advantage that, with the aid of the tension spring 7 which biases the locking piece 9 to one side, the locking engagement does not occur. Due to this engagement mode and the engagement bias provided by the tension spring, the number of parts of the locking device for the door opening prevention device of this invention can be reduced to a minimum, which is an invention of high practical value.

The handles shown in the embodiments of this invention may be operated by being connected internally to the inner and outer handles of a normal opening/closing lock device for a back door.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a side view of the rear of a car equipped with a back door opening prevention device according to this invention, Figure 2 is an overall side view of a van-type vehicle, Figure 3 is a perspective view of the striker side of the seat back, and Figure 4 is a lock. FIG. 5 is a perspective view of the support bracket, and FIG. 6 is a perspective view of the essential parts of the back door incorporating the door opening prevention device. 1... Seat back, 2... Seat back frame, 3... Striker, 4... Back door, 5
... Back door inner plate, 6 ... Support bracket, 7
... Tension spring, 9 ... Locking piece, 10 ... Lock member, 11 ... Support shaft, 12 ... Handle, 13 ...
Hook-shaped hooks, 52, 53...drilling holes.

Claims (1)

[Scope of utility model registration request] In a van-type vehicle having a back door hinged at the upper end and a rear seat that can be tilted backwards up to the edge of the door, a striker having a U-shaped engagement portion and fixed to the periphery of the back of the seat back, and a striker attached to the lower edge of the inner plate of the back door. The hook-shaped hook is exposed through the upper and lower holes, and the handle is exposed through the upper hole, and the support bracket is fixed to the inside of the back door. It consists of a pivotally supported lock member and a locking piece protruding from the back of the lock member, and a tension spring that always biases it in one direction, so that when the seat back is tilted backward, the striker A backdoor opening prevention device in which an engaging part engages and disengages from a hook-shaped hook.