JPH0412237Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a locking device for locking an automatic door in a predetermined position.

Conventional technology A lock body is attached to a horizontal frame such as an engine case or a blind, a lock plate is attached to a hanger part that movably supports the door on the horizontal frame, and the lock plate and the lock body are used to close the door. Devices that lock in place are known.

Problems that the invention aims to solve: If the door size and opening distance are different, the mounting position of the locking device will change, and the mounting position of the locking plate must be adjusted to match the mounting position of the lock body. is troublesome.

Further, the mounting position of the locking device changes depending on whether the door is single-swinging or double-swinging, and the above-mentioned troublesome work is required.

Means and operation for solving the problem: Teeth are formed continuously on the belt in the longitudinal direction, a movable piece having teeth that mesh with the teeth is connected to a drive source, and the movable piece is driven by the drive source. A movable piece prevents the belt from moving and locks the door by moving and engaging the teeth.

Embodiment FIG. 3 is a schematic front view of the driving part of an automatic door, in which a driving pulley 2 and a driven pulley 3 are arranged in a horizontal frame 1 such as an engine case or a door. A belt 4 is wrapped around it, and
The drive pulley 2 is connected to an electric motor M.

The driving pulley 2 and the driven pulley 3 are timing pulleys having teeth on their outer circumferential surfaces, and the belt 4 is a timing belt having teeth 4a that mesh with the teeth continuously at equal pitches in the longitudinal direction.

A pair of hangers 6, 6 are fixed to the upper part of the door 5, and rollers 7 provided on each hanger 6 can freely roll along the guide rails 8 of the horizontal frame 1, so that the door 6 is moved along the horizontal frame 1. It is movable, and the door 6 is connected to the connecting member 9.
The belt 4 is connected to the belt 4.

The horizontal frame 1 is provided with a locking device A, and the locking device A is provided with a fixed piece 10 and a movable piece 11 as shown in FIG. and fix it to the horizontal frame 1 with screws 12,
The movable piece 11 faces the teeth 4a of the belt 4, and has teeth 11a of the same pitch as the teeth 4a. It is held biased in the direction away from the belt 4.

Reference numeral 16 denotes a drive source such as a solenoid, the movable part 16a of which is pivoted to one end of a connecting rod 18 that is swingably supported on the horizontal frame 1 by a pin 17, and the other end of the connecting rod 18 is connected to the movable piece. It is pivotally connected to 11.

When the movable part 16a of the drive source 16 is operated to project, the movable piece 11 slides toward the belt 4 via the connecting rod 18, as shown in FIG.
Since the belt 4 can be fixed to the horizontal frame 1 so that the belt 4 does not move by meshing with the teeth 4a of the belt 4, the door 5 can be locked so that it does not move.

In addition, if the size or opening distance of the door 5 is different, or if the door is a single-swing door or a double-swing door, the door 5 is moved to a predetermined position, and in that state, the tooth 11a of the movable piece 11 is moved as described above. The door 5 can be locked by meshing with the teeth 4a of the belt 4, and there is no need to adjust the position as in the conventional case.

Note that the fixing piece 10 does not need to be provided, and
As the drive source 16, a cylinder or the like may be used in addition to a solenoid.

Further, as shown in FIG. 4, a pair of drive sources 16,
16 is fixed to the horizontal frame 1, and its respective movable parts 16a, 1
6a is connected with the connecting rod 19, and this connecting rod 19
The movable piece 11 may be fixed to.

Effects of the invention No matter what rotational position the belt 4 is in, the teeth 11a of the movable piece 11 can be engaged with the teeth 4a of the belt 4 to prevent movement of the belt 4 and lock the door 5. If the pod opening distance is different,
In the case of a single-swing door or a double-swing door, the door 5 can be locked in a predetermined position without any troublesome position adjustment work.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a sectional view of the locking device, Fig. 2 is a sectional view of the locking state, Fig. 3 is a schematic front view of the driving part of the automatic door, and Fig. 4 is the locking device. FIG. 3 is a sectional view of another embodiment of the invention. 1 is the horizontal frame, 2 is the drive pulley, 3 is the driven pulley,
4 is a belt, 4a is a tooth, 5 is a door, 11 is a movable piece,
11a is a tooth, and 16 is a driving source.

Claims (1)

[Scope of utility model registration request] A door 5 is provided movably along the horizontal frame 1, and a driving pulley 2 and a driven pulley 3 are provided on the horizontal frame 1, and the driving pulley 2 and driven pulley 3 have teeth 4.
A movable piece 11 that connects the belt 4 with the door 5 and has teeth 11a that mesh with the teeth 4a of the belt 4 is attached to the horizontal frame 1. A door lock device for an automatic door, characterized in that a movable piece 11 is provided movably toward a belt 4, and the movable piece 11 is connected to a drive source 16.