JPH06992Y2 - Chair automatic laying machine - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an automatic chair laying machine for laying and collecting a large number of chairs in a large conference hall, a gymnasium or the like.

[Conventional technology]

As an automatic chair laying machine of this type, according to Japanese Patent Laid-Open No. 63-270006, a trolley, a leg guide inserted between the legs of the chair, a leg mounting rail inclined upward, and a large number of hooks facing outward are provided. A lift chain protrudingly arranged above the leg mounting rail, and a horizontal bar rotatably arranged at the tip end of the lift chain and provided between the front legs of the chair approaching along the leg guide. It is well known that a scraping lever that is engaged with the hook by disposing the scraper and pulling it up is provided. Then, with the lifting lever pulling the horizontal bar to the locking position on the chain surface, the lift chain corresponds to the hook interval 1
It is designed to be moved by the pitch and locked to the hook.

[Problems to be solved by the device]

However, due to variations in the height of the horizontal bar, displacement of the chain due to increased weight in the stacking process, etc., the gap between the hooks at the tip that becomes the horizontal bar locking position and the horizontal bar position attracted There remains a problem that the relationships do not match and thus a locking error occurs.

Therefore, an object of the present invention is to improve the reliability of the horizontal bar locking operation by the hook in the automatic chair laying machine of the type described above.

[Means for Solving the Problems]

In order to achieve this object, the present invention sets the horizontal bar locking position of the hook to a height at which the front leg is in a locked state and floats above the floor,
The tip part goes into the horizontal bar of the front leg that has reached the raised position and rises toward the front end of the lift chain, and the base end is provided with a horizontal bar guide rail that is located at the horizontal bar locking position. is there.

[Action]

When the horizontal bar in the standby position is lifted by the lifting lever, the horizontal bar rises along the horizontal bar guide rail, and the front legs are pulled up from the floor to the horizontal bar locking position, and the horizontal bar is hooked. Be locked.

〔Example〕

1 to 4 show an automatic chair laying machine according to an embodiment of the present invention.

In these figures, 10 is driven by drive wheels 17 and chair 1
Is a trolley for stacking. As shown in FIG. 2, the chair 1 has a front leg 1a provided on a seat plate 1d with a back support 1c, which is narrower than a rear leg 1b. The seat plate 1d is configured to be able to sink into the front seat plate 1d. In addition, a seat plate is provided above the front legs 1a.
A horizontal bar 1e is provided with a gap from 1d.

First, a leg guide 11 which is inserted between the legs 1a and 1b of the chair 1 is horizontally provided on the carriage 10 so as to project rearward. Also, trolley 10
On both sides of the front leg 1a, two leg mounting rails 12 that match the mutual spacing of the front legs 1a so that the front legs 1a are mounted and guided upward.
Are juxtaposed. Further, above the rail, a lift chain 14 is provided, in which each link has, for example, an inverted L-shaped hook 13 protruding therefrom. The distance between the leg mounting rail 12 and the lift chain 14 corresponds to the height from the tip of the front leg 1a to the horizontal bar 1e. The lift chain 14 is a reducer 16
Motor via a, chain 16b, sprockets 16c, 16d
Driven by 16.

On both sides of the tip of the cart 10, a lifting lever 20 for pulling the horizontal bar 1e of the chair 1 approaching along the leg guide 11 is provided. This lifting lever is fixed to a support plate 21a fixed to the rotary shaft 21, this support plate is driven by a motor 22 via a link 22a, and the other side is also driven by a lever 22b connected to this link.

The lift chains 14 on both sides are shown enlarged in FIG.
At the tip of the, support frames on both sides of the truck 10, respectively.
The horizontal bar guide rails 25 attached by 26 are juxtaposed. The horizontal bar guide rail is formed such that the base end portion 25a is located at the horizontal bar locking position 13a and is inclined downward toward the front, and the distal end portion 25b is submerged in the horizontal bar 1e that has come to the scraping position. There is. The distance between the horizontal bar guide rails 25 is
It is set to be narrower than the space between the front legs 1a. The height of the lift chain 14 is the front leg 1 of the chair 1 that has reached the horizontal bar locking position 13a.
a is set to float above the floor.

A motor control unit is attached to the motors 16 and 22, and a chair detection switch (not shown) provided on the leg guide 11, for example.
In response to the detection signal of, the motor 22 is driven so that the hoisting lever 20 is rotated by a predetermined angle due to the lateral bar locking, and the motor 16 is moved by the lift chain 14 at a predetermined time after the detection. It is configured so that it is driven so as to move only one link section, and then the raking lever 20 is reversed to return to the standby position. For the return operation of the hoisting lever 20 and the start of the lift chain 14, it is conceivable that a separate horizontal bar detection sensor is arranged at each link to respond to the detection signal for confirming the lock. Further, in response to a manual operation, the drive wheel 17 is driven by a dedicated motor, and is further reversed when the chair 1 is laid.

Next, the operation will be described.

When recovering the chairs 1 arranged on the floor, the drive wheels 17 are operated to move the cart 10 backward, and the leg guides 11 are inserted between the legs 1a and 1b of the chair 1.

When the chair detection switch detects the chair 1 in the raised position, the raising lever 20 operates to raise the horizontal bar 1e (solid line in FIG. 4) and slides on the horizontal bar guide rail 25 in the process of front legs. The lower end of 1a hits the tip of the leg mounting rail 12 and tilts (see FIG. 1), and the horizontal bar 1e is locked at the horizontal bar locking position 13
It is pressed against a (dashed line in FIG. 4), and then the lift chain 14 is operated by one link section and locked. Then, the lifting lever 20 rotates backward to the standby position,
The carriage 10 is further advanced, the next chair 1 is stacked in the same manner, the lift chain 14 is moved by one pitch, and the chairs 1 are sequentially locked on the hooks 13 on the leg mounting rails 12 in the following order. Be recovered.

When laying the chair 1, the carriage 10 is moved forward, the lift chain 14 is reversed, the leg mounting rail 12 is slid, and the horizontal bar 1e comes into contact with the horizontal bar guide rail 25 so that the hook 13 surely moves from the hook 13. It disengages, slides the horizontal bar guide rail 25, and is dropped in order.

[Effect of device]

As described above, according to the present invention, since the horizontal bar is guided on the guide rail which is lifted by the lifting lever and the chair is lifted at the position where it is locked to the hook, the dimensional variation of the lift chain or the displacement due to the load, the chair Mistakes in locking the chair due to dimensional variations and the like are avoided, and reliability of the lifting operation is improved. Further, when laying, the horizontal bar contacts the horizontal bar guide rail to surely engage and disengage from the hook.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic side view of an automatic chair laying machine according to an embodiment of the present invention, FIG. 2 is a perspective view of chairs stacked by the automatic chair laying machine according to the embodiment, and FIG. FIG. 4 is a schematic plan view of the automatic chair laying machine according to the same embodiment, and FIG. 4 is a side view of essential parts of the automatic chair laying machine according to the same embodiment. 1 ... Chair, 10 ... Bogie, 11 ... Leg guide, 12 ... Leg mounting rail, 13 ... Hook, 13a ... Horizontal bar locking position, 14 ... Lift chain, 20 ... Lifting lever, 25 ... Horizontal bar guide rail

Claims (1)

[Scope of utility model registration request] 1. A trolley comprising a leg guide projectingly inserted between the legs of a chair, and leg placement rails juxtaposed on both sides to place the legs on both sides and guide them upward. , A plurality of hooks projecting outward at a predetermined pitch and arranged above the leg mounting rails, and a lift guide that is rotatably arranged at the tip of this lift chain. A lifting lever that hooks the horizontal bar provided between the front legs of the chairs that are approaching along and locks it on the hook is arranged, and the horizontal bar is locked on the hook and the lift chain moves one link section at a time. Each time the chair is automatically collected along the leg mounting rail, the chairs thus collected are laid by moving the lift chain in the opposite direction. The front leg is locked at the horizontal bar locking position Set it so that it floats above the floor, and the tip goes into the horizontal bar of the front leg that has reached the lifted position, and it also moves up toward the tip of the lift chain so that the base end is located at the horizontal bar locking position. An automatic chair laying machine, which is provided with a horizontal bar guide rail.