JPH0640877Y2 - Door opening / closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an opening / closing device for an entrance / exit that is configured so that opening / closing members such as a sliding door, a gate, and a swinging type door can be easily opened / closed by driving a driving device. More specifically, the present invention relates to a door opening / closing device configured to interlockly connect a driving device, a gear transmission mechanism, and an opening / closing mechanism to open / close the opening / closing member by driving the driving device.

[Conventional technology]

The switchgear described above is installed on the premise that the drive device operates well, and when the drive device does not operate due to a failure of the drive device, or a power failure when the drive device is an electric motor, Even if an attempt is made to move the opening / closing member by an artificial operation force, the drive device acts as a resistance instead, which makes opening / closing difficult.

For this reason, in the conventional opening / closing device, a known clutch is provided in the gear transmission mechanism, and when the clutch is disengaged, the drive device and the opening / closing mechanism are disconnected from each other, and the opening / closing member is operated with a light operating force. It is configured so that it can be moved artificially.

For example, as disclosed in Japanese Utility Model Laid-Open No. 63-34293, one gear of a pair of gears forming a gear transmission mechanism is rotated with respect to the other gear while being linked to a lever or the like. A structure in which one of the gears can be switched between a state in which it meshes with the other gear and a state in which it can be disengaged by supporting the support shaft so that it can be pivotally displaced in the perspective direction.

Was known.

[Problems to be solved by the device]

In the above-mentioned conventional structure, since the clutch is provided, the gear transmission mechanism becomes complicated and large in size, and
There was a problem that the manufacturing cost was high.

Further, in the above-described conventional structure, one gear of the gear pair is oscillated and displaced with respect to the other gear, so that the linkage mechanism of the lever and the gear to be oscillated is displaced. Since it is necessary to secure a range space, by securing the range space in a support frame or the like that supports gears, levers, etc., the frame and the like become large and
There is a problem that the structure becomes complicated by providing the linkage structure of the gear and the lever.

As means for solving such a problem, for example, in a gear transmission mechanism, one gear of a pair of gears meshing with each other is mounted so as to be slidably movable in the axial direction with respect to the support shaft, and the sliding of this gear is performed. It is conceivable to interpose a transmission / interruption means that releases the engagement with the other gear by dynamic movement, but in order to mount the gear in a slidable manner, it is necessary to make the support shaft for supporting the gear long. Although the gear transmission mechanism becomes large and there is no problem in performing the occlusal release operation, when operating on the occlusal side, if the peaks and valleys of both gears do not exactly match, the open / close member does not engage. In many cases, an extra operation for manually moving the gears to accurately match the peaks and valleys of both gears is required, so that there is a problem that it takes time to switch to the occlusal state.

The present invention has been made in view of the above-mentioned circumstances, and by devising the gear engagement and disengagement structure, the gear transmission structure does not become complicated or large, and thus can be manufactured at low cost. It is an object of the present invention to provide an opening / closing device for an entrance / exit in which the driving device and the opening / closing mechanism can be easily interlocked and released.

[Means for Solving the Problems]

The characteristic configuration of the present invention for achieving the above-mentioned object is that, in the opening and closing device for the entrance and exit, the gear pair interposed in the gear transmission mechanism is moved relative to each other along a direction orthogonal to the occlusal surfaces of both gears. By providing a switching mechanism for switching between an occlusal state and an occlusal released state, the switching mechanism is configured to be capable of bending a support shaft that supports one of the gear pairs via a universal shaft joint, The refraction of the support shaft switches between the occlusal state and the occlusal state.

The operation and effect of this characteristic configuration are as follows.

[Action]

When the gear pair interposed in the gear transmission mechanism is relatively separated from each other along the direction orthogonal to the occlusal surface of the gear to switch to the disengaged state, the interlock between the drive device and the opening / closing mechanism is broken, and the opening / closing member is opened. Can be artificially moved with a light operating force.

Then, by making the gear pair relatively close to each other along the direction orthogonal to the occlusal surface of the gear, and if the peak of one gear fits into a part of the valley of the other gear, the valley between the gear pair will be Even if the gears do not match exactly, one of the gears is forced to move relative to the other and shifts to the occlusal state.

Further, since the support shaft that supports one of the gear pairs is configured to be bendable via the universal shaft joint, when the support shaft is bent, the gear swings and switches to the disengaged state. , When the spindle is returned to its original position, both gears will switch to the occlusal state in which they mesh with each other, and the displaced gear is in the range in which the spindle bends and the meshing of the mutual gears. Also, it is sufficient to displace only within the range of the occlusal allowance where the occlusal is released.

[Effect of device]

Since it is sufficient to move the gear relative to the occlusal margin along the direction orthogonal to the occlusal surface within the range in which the supporting shaft of the displacing gear is bent, the displacement of the gear can be minimized. Can be made smaller than before.

Even if the peaks and valleys of both gears do not exactly match, it is easy to switch to the occlusal state, so that the switching operation between the occlusal state and the occlusal released state can be easily performed.

Therefore, it is possible to provide an opening / closing device in which the gear transmission mechanism does not increase in size and the driving device and the opening / closing mechanism can be easily linked and released.

Furthermore, since the occlusal state and the occlusal state are switched by the swinging operation around the universal shaft joint of the gear, the gear guide movement mechanism can be easily configured, and the shaft of the gear is connected via the universal shaft joint. Since it is configured to be bendable, the gear transmission mechanism can be assembled at a low cost without requiring high precision. [Example] As shown in FIGS. 1 and 2, a sliding door is an example of an opening / closing member. An opening / closing mechanism (A) in which a door roller (2) is supported on (1), and the door door (2) rolls on a rail (3) to guide and move the sliding door (1) in the opening and closing direction, and a drive device. Electric motor (B), a support shaft (6) refractably connected to the output shaft (4) of the electric motor (B) through a universal joint (5), and fixed to the support shaft (6) Pinion gear (6a) and rack door fixed to sliding door (1) The sliding door device, which is an example of the opening / closing device including the gear transmission mechanism (C) having the (1a), is configured.

The rack gear (1a) has a mounting frame (1) that is fixed to the rear side of the sliding door (1) and has an L-shaped cross section and is long in the opening / closing direction.
It is fixed to the downward surface of b) in a posture parallel to the rail (3).

Extend the frame (7) fixing the electric motor in a posture overlapping the upper surface of the mounting frame (1b) fixing the rack gear (1a) of the sliding door (1) mounted on the rail (3). At the same time, the frame (7) fixing the electric motor (B) and the rail (3) are integrally fixed via the substrate (8), and the sliding door (1) and the frame (7) are connected. The upper and lower surfaces of the mounting frame (1b) and the lower surface of the frame (7) are placed as close as possible by simple construction so that the relative vertical position can be accurately positioned, and even if the sliding door (1) tilts slightly forward and backward. , The mounting frame (1b) and the frame (7) come into early contact with each other, and the sliding door (1)
The sliding door device with high safety is configured so that it can be surely prevented from falling.

As shown in FIG. 3, a bearing (9) is externally fitted to an intermediate position of a support shaft (6) for fixing the pinion gear (6a), and is movably connected to the bearing (9) in the axial direction. The screw shaft (10) is screwed into the frame (7) to support the support shaft (6), and the handle (10a) fixed to the upper end of the screw shaft (10) is rotated to rotate the bearing (9). Is vertically moved along the guide groove (7b) of the guide frame (7a) installed over the frame (7) and the substrate (8), and the bearing (9) is lowered to lower the support shaft (6). When the rack gear (1a) and pinion gear (6a) are engaged, the rack gear (1a) and pinion gear (6a) are engaged, and the bearing (9) is raised to engage the rack gear (1a) and pinion gear (6a). A switching mechanism (D) for switching to the state is provided.

A lock nut (11) is screwed onto a screw shaft (10) rotated by the handle (10a), and the rack gear (1a) and the pinion gear (6a) are oscillated by vibration when the motor (B) is started.
It is configured so that the occlusion with and is not accidentally released.

[Another embodiment]

In the above embodiment, the rack gear may be fixed to the ground side, and the electric motor and the pinion gear may be attached to the sliding door side.

The gear pair is not limited to the rack gear and the pinion gear, and can be variously changed according to the operation system of the opening / closing mechanism and the structure of the gear transmission mechanism.

Means for moving the pair of gears relative to each other along the direction orthogonal to the occlusal planes of both gears include driving gears directly connected to a drive device and driven gears that interlock with each other via an idle gear to drive the idle gear. The gear may be rotationally moved while maintaining the engagement with the gear or the driven gear, and a guide may be provided to guide the idle gear together with its bearing in a direction away from both gears.

The opening / closing device is not limited to the sliding door device, but may be a swinging door device or an opening / closing gate that opens and closes in the vertical direction.

It should be noted that reference numerals are added to the claims of the utility model for convenience of comparison with the drawings, but the present invention is not limited to the structure of the accompanying drawings by the entry.

[Brief description of drawings]

The drawings show an embodiment of a door opening / closing device according to the present invention,
FIG. 1 is a side view, FIG. 2 is a rear view, and FIG. 3 is an enlarged view of a main part. (1) …… Opening / closing member, (1a), (6a) …… Gear, (6)
…… Spindle, (A) …… Opening / closing mechanism, (B) …… Drive device,
(C) …… Gear transmission mechanism, (D) …… Switching mechanism.

Claims (1)

[Scope of utility model registration request] 1. A drive device (B), a gear transmission mechanism (C), and an opening / closing mechanism (A) are interlockingly connected to each other so that the opening / closing member (1) is opened and closed by the drive of the drive device (B). In the doorway opening / closing device configured as described above, the gear pair (1a), (6a) interposed in the gear transmission mechanism (C) is arranged in a direction orthogonal to the occlusal surfaces of both gears (1a), (6a). And a switching mechanism (D) for switching between an occlusal state and an occlusal released state by moving them relative to each other along the switching mechanism (D).
Is one of the gear pairs (1a) and (6a) (6
The support shaft (6) for supporting a) is configured to be bendable via the universal shaft joint (5), and the bending of this support shaft (6) switches between an occlusal state and a non-occlusal state. apparatus.