JPH0437795Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a safety device for stabilizing the standing up of a gate plate in an automobile lifter.

Conventionally, as a device for stabilizing the standing of a gate plate, there is a standing safety device that grips a lock pin attached to the base of the gate plate from both sides using the elasticity of a spring, but this device is structurally complex. Not only that, but it also has the disadvantage that the gate plate becomes unstable as it becomes loose as it is used. The present invention aims to eliminate this drawback and provide a robust device that stabilizes the standing of the gate plate and allows the locking and releasing operations of the locking pin to be carried out smoothly and easily.

The present invention will be explained with reference to the embodiment shown in the drawings. 1 is a gate plate, 2 is an arm for lifting and lowering the gate plate, and 3 is an arm for lifting and lowering the gate plate 1. The upper end is pivoted 4 at an appropriate position on the base side of the gate plate 1, and the lateral direction is A lever 5 for rotating the lock pin laterally and a related interlocking device 7 are connected to one side below the shaft support via a linking rod 6. At a predetermined position immediately below the lock pin device, a bracket 10 integrally formed with a lock pin fitting body 9 with a notch 8 opened in the upper half of the front side is installed by pivoting the rear end to a bearing 12 attached to the chassis 11, The other end of the coil spring 13 with one end attached to the eccentric position on the side of the bearing 12 to which this bracket is pivoted is fixed to the lock pin 3.
Attach it to the required position on the side of the fitting body 9, and
is held in place by the action of a coil spring.

Since the present invention is constructed as described above, the gate plate 1 is normally erected as shown in FIG.
If the lock pin 3 is fitted into the fitting body 9, the gate plate is held in a stable state.If the gate plate is to be raised or lowered, the arm 2 for raising and lowering the gate plate is operated. When the lock pin 3 is opened to the position shown by the chain line in the figure, the lock pin 3 comes out of the fitting body 9 as shown by the chain line, so when the lever 5 shown by the solid line in Figure 1 is moved to the position shown by the chain line,
An interlock 7 associated with the link 6 rotates the locking pin to the position shown in dotted lines. That is, the lock pin is avoided from engaging with the fitting body 9 on the path of the lock pin when the gate plate is raised and lowered, so that the gate plate can be raised and lowered without being hindered by anything. After the lifting and lowering of the gate plate is finished, if you want to return the gate plate to the rear end of the chassis, once the gate plate has risen to the approximately horizontal position shown by the chain line in Figure 2, stop once and operate the lever 5. When the lock pin, which has been retracted to the position indicated by the chain line in Fig. 1, is returned to the position indicated by the chain line in Fig. 2, and then the gate plate lifting arm 2 is raised, the gate plate rises, and while it is rising. At the same time, the lock pin 3 abuts against the notch opening 8 of the fitting body 9 on the passage as shown by the solid line in FIG. 3, and at the same time, the tip of the pin fits into the fitting body 9.
is rotated by the fitted lock pin 3 as the gate plate rises, using the support shaft of the bearing 12 as a fulcrum as shown by the chain line in FIG. The opening of the gate plate is inhibited. At this time, the fitting body 9 is prevented from moving arbitrarily by the action of the coil spring 13, and thereby the gate plate is stably held upright. As described above, according to the present invention, the gate plate can be locked with an extremely simple device, and there is no need for a complicated locking device as in the past, so the gate plate lifting device is simplified accordingly. In addition, the structure is simple, and the lock pin automatically engages with the fitted body, so once the lock pin is engaged with the fitted body 9,
When fitted, unlike conventional gate plate locking devices, there is no fear of loosening, and the gate plate can therefore be safely held upright.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a rear view with the gate plate locked, FIG. 2 is a schematic side view of the gate plate lifting device, and FIG. 3 is an explanatory diagram of the operation of the locking pin device. , Figure 4 shows the lock pin,
It is an explanatory view of the operational relationship with the fitted body. 1... Gate plate, 2... Arm for raising and lowering gate plate, 3... Lock pin, 4... Pivotal support, 5... Lever, 6... Connecting rod, 7... Interlocking device, 8... Notch opening part, 9... Fitting body, 10... Bracket, 11...
... Seat, 12... Bearing, 13... Coil spring.

Claims (1)

[Scope of utility model registration request] A lock pin is mounted on the base side of the gate plate connected to the upper end of the gate plate lifting arm, with its upper part pivotally supported so as to be able to rotate laterally. Equipped with an interlock device associated with a lever that rotates the
At a predetermined position directly below the lock pin device, a bracket equipped with a lock pin fitting body with a notch open in the front upper half is installed by pivoting the rear end to a bearing attached to the chassis, and is held in place by a coil spring. A safety device for standing up a gate plate in an automobile lifter, characterized in that the gate plate is held in place.