JPH027073Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a locking device for preventing the fall of a undulating platform of a folderway lifting device.

[Prior Art] First, the conventional technology and its problems will be described.
A sliding member that slides along column posts erected at intervals from each other, and a platform connected to the sliding member via a parallel link, the platform being connected to the parallel link. In a folder way lifting device consisting of a drop arm and a support platform pivotally attached to the lower end of the drop arm, conventionally, a V-shaped groove provided in a catch plate attached to the side wall of the column post has been used. receiving the striker on the side wall of the platform;
A structure was adopted in which the striker was locked by a latch mechanism attached to the catch plate, thereby fixing the platform to prevent it from falling.

Here, the problem with the conventional example is that the striker fits vertically into the V-shaped groove of the catch plate, so the striker on the side wall cannot be removed unless the entire platform is raised.
Additionally, this platform is very heavy, so it cannot be moved up and down manually.

Therefore, if the power train (power source) M for raising and lowering the platform breaks down, it is impossible to unlock the aforementioned lock.

For example, the platform for a folderway lift installed on a vehicle for transporting disabled persons is
Reliable fixing is required to prevent the platform from chattering due to vehicle vibration and falling while driving. Additionally, there was a need for a lock device that would allow a physically disabled person inside the vehicle to unlock the lock at any time if he or she wanted to escape from the vehicle on his or her own.

[Purpose of the invention] As mentioned above, the purpose of this invention is to create a locking mechanism that can be easily unlocked from the locked state without raising or lowering the platform of the folderway lifting device, so that a physically disabled person inside the vehicle can easily unlock the door. , the lock can be unlocked at any time when one wishes to escape by one's own power, and the platform of the elevating device usually has a structure that allows easy and reliable locking even in the folded state; It is also desirable that the structure of the locking device itself of the lifting device be simple, and it is an attempt to provide such a locking device at a low cost.

[Structure of the device] This device includes a sliding member that slides along column posts that are erected at intervals, and a platform that is connected to the sliding member via a parallel link. The platform is a foldaway lifting device consisting of a drop arm connected to the parallel link and a support platform pivotably mounted on the lower end of the drop arm, and the platform is a catch plate fixed to the column post and having an upwardly facing engagement surface. a latch mechanism fastened to a side wall at the lower end of the catch plate; a buckle member whose central end is pivoted to the catch plate so as to be slidable in the direction in which the drop arm rotates; and an upwardly facing engagement surface of the catch plate. It consists of a flanged pin fixed to the side surface of the drop arm and an engagement pin implanted in the lower end of the buckle member, and by engaging the hook end of the latch mechanism in the recess of the engagement pin, This locking device for a platform of a folder way lifting/lowering device is characterized in that the flanged pin is locked between the upward engaging surface of the catch plate and the buckle member.

[Example] A platform locking device in a folder way lifting device of this invention will be explained.

First, as shown in FIGS. 1 to 5, 1 is a latch mechanism, 2 is a buckle member, and 3 is a flanged pin implanted outward at a predetermined height position of the drop arm 5 of the movable part of the platform F. 4 is a pivot shaft, 6 and 7 are parallel links as shown in FIG.
F is a platform that can be raised and lowered, 10 is a column post on the inside of the vehicle, 11 is a hook-shaped catch plate, and 21 is an engagement pin. In the platform F of this foldaway lifting device, hook-shaped catch plates 11 with upward openings are fixed to the left and right column posts 10 having a C-shaped cross section at a predetermined height so as to face rearward. In addition, a latch mechanism 1 is attached to the lower end of the outside of the hook-shaped catch plate 11, and is fastened along the side wall of the column post 10.
is located. There, the hook is fastened so that it can rotate from the outside and can be engaged in a predetermined direction.

Next, the assembly of the buckle member 2 fixed along the side wall of the column post 10 will be explained. At the center end of the buckle member 2, which is pivotally attached to the outer end of the hook-shaped catch plate 11 in the direction in which the drop arm 5 of the movable part of one platform F moves, It is supported in a cantilevered manner by a pivot shaft 4 so as to be rotatable.

[Function] As explained above, the locking device for preventing the platform from falling of the foldaway lifting device of this invention is secured to both outside sides of the hook-shaped catch plate 11 on the side wall of the column post 10 for the platform F. A latch mechanism 1 and a flanged pin member that locks the drop arm 5 of the movable part of the platform F from falling in accordance with the upward rolling position of the drop arm 5 in a direction in which the drop arm 5 moves up and down or rotates. 3 is attached at a predetermined height position on the outer frame of the drop arm 5 within the operating range of the hook, and the engagement pin 21 of the buckle member 2
By engaging the hook end of the latch mechanism 1 in the upper end recess, the flanged pin member 3 is locked between the upwardly directed engagement surface of the catch plate 11 and the buckle member 2, and the platform F prevent falling.

As a result, the center end of the buckle member 2 can be rotated in a predetermined direction forward and backward in the direction in which the drop arm 5 of the movable part of the platform F moves without raising or lowering the platform F of the lifting device. Since the buckle member 2 is pivotally attached to the pivot shaft 4 so as to be able to swing freely, when the hook end that was engaged with the engagement pin 21 of the buckle member 2 is removed, the buckle member 2 can be reversed. , the lock can be easily unlocked from the aforementioned locked state.

Conversely, when the platform F of the lifting device is to be folded and stored, this platform
from the lifting position shown in Figure 5 to the folding position shown in Figure 6 through an angle of about 95 degrees and lift platform F. When the drop arm 5 of the movable part of the platform F is slightly lowered in the direction of movement, the flanged pin member 3 comes into contact with the upward engaging surface of the catch plate 11 and reaches the lock position. Here, the upward engaging surface of the catch plate 11 and the buckle member 2
The flanged pin member 3 is sandwiched between the buckle member 2 and the engagement pin 21 of the buckle member 2.
By engaging the hook end of the latch mechanism, the flanged pin member 3 is placed between the buckle member 2 and the flanged pin member 3.
to lock.

[Effects of the invention] As is clear from the above explanation, the locking device for preventing the platform of the folderway lifting device of this invention from falling is a locking mechanism suitable for the lifting device, and the above-mentioned locking device can be used without raising or lowering the platform. It is a mechanism that can be easily unlocked from the locked state, and can be used by a disabled person at any time when he or she wants to escape on his or her own. Usually, the platform of the lifting device is easy to use, even when folded. A reliable lock can be achieved.

Since the structure of the locking device itself of the foldaway lifting device of this invention is simple, the above-mentioned locking device can be provided at a low cost, and it can be said that the invention is of high practical value.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention. Fig. 1 is a front view of the locking device of the folderway lifting device of this invention when it is locked, Fig. 2 is a side view of the same device when it is locked, and Fig. 3 is a side view of the same device when it is locked. FIG. 4 is a front view of the device when the lock is released, FIG. 4 is a front view of the device when the lock is fully open, and FIGS. 5 and 6 are explanatory diagrams of each operating state of the folder way lifting device. 1... Latch mechanism, 2... Buckle member, 3...
...flange pin member, 4...pivot shaft, 5...drop arm, 10...column post, 11...catch plate, 21...engaging pin, F...platform.

Claims (1)

[Scope of utility model registration request] A sliding member that slides along column posts erected at intervals from each other, and a platform connected to the sliding member via a parallel link, the platform being connected to the parallel link. In a foldaway lifting device consisting of a drop arm and a support platform pivotably mounted on the lower end of the drop arm, the drop arm includes a catch plate fixed to the column post and having an upwardly facing engagement surface, and a catch plate fastened to the side wall of the lower end of the catch plate. a buckle member pivotally connected to the catch plate at its center end so as to be slidable in the direction in which the drop arm rotates; It consists of a fixed flanged pin and an engagement pin implanted in the lower end of the buckle member, and by engaging the hook end of the latch mechanism in the recess of the engagement pin, the upward engagement surface of the catch plate is engaged. A locking device for a platform of a folder way lifting/lowering device, characterized in that the flanged pin is locked between the buckle member and the buckle member.