JPS5924780Y2 - Sliding door lock device for automobiles, etc. that have a box-shaped loading platform - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a locking device for a sliding door in an automobile or the like having a box-shaped loading platform.

Conventionally, there are at least ■ or more sliding doors on the sides of the vehicle body, and each door is positioned on the same plane as an adjacent fixed wall surface or other door in the closed position, and when moving, it is positioned diagonally to the side. For products that are designed to protrude downward and move by sliding, separate sliding doors are installed depending on changes in floor height (for example, low-floor chassis with protruding tire housings). This increases the number of sliding doors or increases the number of fixed walls, which reduces the opening width and makes it difficult to load and unload cargo. Because of this, there were problems in that it was bulky and expensive.

The present invention was made to solve the above-mentioned conventional problems, and even if there is a protrusion such as a tire house on the floor of a low-floor car, the lower end can be shaped to match the shape of the protrusion. Moreover, it is an object of the present invention to provide a locking device for a sliding door in which the unlocking operation can be performed using a single locking device.

The present invention will be described below with reference to illustrative embodiments.

A is a low-floor box-shaped loading platform for an automobile, and two sliding doors a and l) are slidably attached to the left and right sides of the loading platform, and their lower ends follow the shape of the vehicle floor surface 11. A lock pawl 14 is formed in a stepped shape, and at its lower end engages with a retaining portion 13 provided at an appropriate interval on the vehicle body floor frame 12.
Chassis H5a and 15b to which are fixed are rotatably pivoted.

The upper shaft 15a and the lower chassis H5b have crank levers 16a and 16b fixed to the respective chassis l-15a and 15b, one end of which is attached to the upper crank lever 16a, and the other end of which is attached to the lower crank lever 16a. The crank lever 16b is connected to and interlocks with an arm 17 rotatably connected to the crank lever 16b.

Chassis 1-15 above the sliding door a (and b)
A lock release device mounting portion 24 is formed in the portion located above a, and the mounting recess 24 is formed in the mounting recess 24.
4, an operating lever 18 whose intermediate portion is rotatably pivoted and can be operated from the outside; and a rod whose one end is rotatably pivoted to the upper end of the operating lever 18. A lock release device consisting of 19 is provided.

The other end of the rod 19 of the lock release device is connected to a crank lever 16 fixed to the upper shaft 15a.
It is rotatably pivotally connected to the shirt H5a via C.

The lock release device may be provided above the link mechanism as in the slide door a, or may be provided above the upper lock pawl 14 as in the slide door b. .

Further, by integrating the lock pawl 14 with the joint as shown in the embodiment, the number of parts can be reduced and assembly can be facilitated.

Furthermore, running supports 22 having rollers 21 that move within top rails 20 provided at both ends of the vehicle roof are fixedly installed at the front and rear of the upper ends of the sliding doors a, l).

23 is a sub-roller used when pulling out the sliding door a, l).

Now, in order to open the sliding door a, first pull the lower end of the operating lever 18 and rotate the operating lever 18.
A rod 19 whose one end is pivotally attached to the upper end of the operating lever 18
is pushed down with the rotation.

As a result, the other end of the rod 19 moves outward and downward since it is pivoted to the crank lever 16C at a position slightly outside of the pivot position of the operating lever 18 at one end.

Therefore, the upper shaft 15a is connected to the crank lever 1.
6C rotates in the opposite direction to the operating lever 18.

Along with this rotation, the arm 17 moves outward and downward.

Along with this movement, the lower shaft 15b also rotates in the same direction as the upper shirt 15a via the crank lever 16b.

Due to the rotation of the shafts 15a, 15b, the shirt) 15a.

The lock pawl 14 fixed to the lock pawl 15b also rotates, but since the lower end 14a of the lock pawl 14 rests on the upper surface 13a of the engaging portion 13, it is rotated in the opposite direction using the iron portion as a fulcrum.

As a result, the sliding door a is pulled out diagonally downward on the side of the vehicle body, and the claw portion 14b of the locking claw 14 is disengaged from the engagement portion 13.

(See the entrance in Figure 2) When the sliding door a is pulled out diagonally downward on the side of the vehicle body, the rollers 21 of the running support 22 fixed to the upper end of the sliding door a move onto the top rail 2.
It fits into the guide groove 20a of 0.

Next, pull the operating lever 18 further to pull the sliding door a.

As a result, the lock pawl 14 also comes off from the vehicle body floor frame 12.

After that, the operating lever 18 is returned to its original position.

As a result, the shirts l-15a and 15b rotate in the opposite direction to the above, and the lock pawl 14 hangs down from the lower edge of the sliding door a, allowing the sliding door a to be opened.

(See Figure 2) Also, to close the sliding door a,
The lower end of the operating lever 18 is pulled to rotate the shirts H5a and 15b, and the locking claw 14 is rotated to the inside of the sliding door a, so that the locking claw 14 is positioned on the retaining part 13.

After that, when the operating lever 18 is returned to its original position, the claw part 14b of the lock claw 14 engages with the engaging part 13 and rotates about the iron part, and as the sliding door a moves toward the vehicle body. When the sliding door a is closed and locked at the same time.

As described above, according to the present invention, the upper lock and the lower lock are operated simultaneously using a link mechanism, so it is possible to operate the upper lock and the lower lock at the same time. Even in such a case, since the shape of the lower end of the sliding door can be freely set according to the shape of the floor surface, the sliding door can be made large.

Therefore, the door opening can be made wider and can be provided over the entire side of the vehicle body, so that the workability of loading and unloading cargo can be improved.

In addition, since the number of sliding doors can be minimized, the number of parts such as locking mechanisms can also be reduced.
This has the advantage of having a simple structure and being able to be provided at low cost.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway side view of a car equipped with a sliding door according to the present invention, Figure 2 A is a sectional view taken along line I-I in Figure 1, and Figure 2 shows the opening when the sliding door is removed. 3 is a sectional view taken along the line II--II in FIG. 1, showing the state. a, l) are sliding doors, 14 is a lock claw, 15 a
, 15b is the shaft, 16 a , 16 b , 16
C is the crank lever, 17 is the arm, 18 is the operating lever, 19 is the rod, and 22 is the running support.

Claims (1)

[Scope of utility model registration request] In a sliding door that is slidably opened and closed on the cargo bed of an automobile or the like having a box-shaped cargo bed, the lower end of the sliding door is formed into a shape that matches the shape of the vehicle body floor surface in the closed position, and each lower end A shaft to which a lock pawl that engages with a retaining portion provided on the vehicle body floor frame is fixed is rotatably pivoted, and the chassis I are connected by a link mechanism to interlock, Furthermore, a sliding door locking device for an automobile or the like having a box-shaped cargo bed, characterized in that an upper shaft of the shaft is connected to a rod of an unlocking device provided on the sliding door via a crank lever.