JPH0637740Y2 - Buddhist altar door opening and closing unit - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a door opening / closing unit for a Buddhist altar, and in particular, opening / closing the Buddhist altar for automatically opening / closing the double door type door provided on the front of the altar. Regarding the unit.

[Conventional technology]

Generally, the Buddhist altar is used for worship services day and night by enshrining the Buddhist image of the main deity, the ancestor's tiles, etc. based on the denomination of the home, and a double door is provided in front of this altar. Doors are open during worship, but are often closed at other times. Normally, the door is opened and closed manually, but in recent years, a door has been developed which is automatically opened and closed.

FIG. 6 and FIG. 7 show a conventional door opening / closing device for such a Buddhist altar, in which the Buddhist altar body 1 is provided with side plates 2 and the side plates 2 which are vertically fixed to both sides of a base (not shown). Is formed by a top plate 3 fixed to the upper end of the altar, and the front side of the altar body 1 has an arc-shaped side door 4 that covers a part of the side surface of the altar body 1 and a tip edge of the side door 4. The front doors 5, which are connected by an appropriate number of hinges so as to be capable of being bent in the middle, are mounted so as to be openable / closable and symmetrical.

A bearing member 6 is attached to the outside of the side plate 2 of the top plate 3 so as to pass through the top plate 3, and a rotary shaft 7 is rotatably supported by the bearing member 6. There is. A base end of a rotating arm 8 is fixed to the lower end of the rotary shaft 7, and a drive motor 9 for rotating the rotary shaft 7 is mounted above the top plate 3. An engaging hole 10 is formed at the tip of the rotating arm 8,
Further, on the base end side of the upper surface of the front door 5, a rotating plate 11 having a tip portion protruding outside the front door 5 is fixed by a screw 12 or the like. An engaging pin 13 is formed at the tip of the rotating plate 11 so as to project, and an engaging hole 10 of the rotating arm 8 has
The engaging pin 13 of the rotating plate 11 is engaged.

When opening the door in the conventional door opening / closing device, the drive motor 9 is driven to rotate the rotary shaft 7 and the rotary arm 8 to rotate, thereby moving the rotary plate 11.
As a result, the base end side of the front door 5 is moved, and the side door 4 is opened along with the front door 5. Then, after the doors 4 and 5 are fully opened, the drive motor 9 is stopped.

Further, when closing the doors, the drive motor 9 is driven to rotationally drive the rotary shaft 7 in the opposite direction, so that the doors 4 and 5 are closed with completely opposite trajectories.

[Problems to be solved by the device]

However, in the conventional door opening / closing device, the drive motor 9 is driven to rotate the rotating shaft 7 and the rotating arm 8 to rotate so that the doors 4 and 5 are opened and closed. Therefore, when the drive motor 9 is not energized, the load of the drive motor 9 is applied to the rotary shaft 7, that is, the front door 5. Therefore, the doors 4,5
In order to open and close the door manually, a large force is required for the opening and closing operation due to the load of the drive motor 9 applied to the front door 5, and smooth opening and closing cannot be performed.
It has the problem of causing damage such as 4,5.

The present invention has been made in view of these points, and provides a door opening and closing unit for a Buddhist altar that can automatically open and close the door of the altar, and that can be easily opened and closed manually. The purpose is to do.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, a door opening / closing unit for a Buddhist altar according to the present invention comprises a rotating shaft for applying an opening / closing driving force to a door arranged in the altar, and a drive connected to the rotating shaft via a transmission mechanism. A door opening / closing unit for a Buddhist altar that automatically opens and closes the door by rotating the rotation shaft by rotating the drive motor, and a worm that is rotationally driven by the drive motor. And a rotating member having a large-diameter portion and a small-diameter portion to which the rotating shaft is attached coaxially, and a worm wheel meshed with the worm is provided in the small-diameter portion of the rotating member. The worm wheel is independently rotatably disposed so that the surface of the worm wheel faces the end surface of the large-diameter portion, the rotating member has an opening on the worm wheel side, and an internally engaging ball at the end portion. If the clutch is installed The clutch mechanism is formed by forming a hole portion in which the engaging ball is accommodated and forming an engaging concave portion with which the engaging ball is engaged, on the facing surface of the large diameter portion of the worm wheel. It is what

[Action]

According to the present invention, the rotating member is rotated together with the worm wheel while the engaging ball of the clutch mechanism is engaged with the engaging recess of the worm wheel, and the drive motor is driven in this state. Rotatably drives the worm and the worm wheel to rotate the rotary shaft to automatically open and close the door. When the door is manually opened and closed, the rotary shaft is rotated through the rotary shaft. When the turning force is applied only to the member, the engagement ball of the clutch mechanism and the engagement recess are disengaged, and the engagement ball is housed inside the hole against the biasing force of the clutch spring. Only the moving member can be rotated, whereby the rotating shaft can be rotated in a state where the load of the drive motor is not applied and the door can be manually opened and closed.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

1 to 5 show an embodiment of the present invention,
A center frame 14 having a U-shaped cross section is arranged such that both side surfaces thereof are erected so that the upper side is open, and a support plate extending laterally is provided on the lower surface side of the center frame 14.
15 is stuck. At both ends of the support plate 1, extension plates 16 and 16 are arranged so as to be movable laterally along the support plate 15, and the extension plates 16 are provided at the support plate 15 respectively.
The extension plates 16 can be fixed at any extension positions according to the width dimension of the door by tightening and fixing with screws 18 through the elongated holes 17 formed in the.
Further, a frame-shaped side frame 19 is provided on the upper surface side of the tip end portion of each of the extending plates 16, and both side surfaces thereof are the center frame 14.
They are fixed so that they are parallel to both side surfaces.

A drive motor is provided inside the center frame 14.
20 is mounted so that its output shaft projects from one side, and the output shaft of this drive motor 20 has a drive gear.
21 is installed. A drive shaft 22 is rotatably held on both side surfaces of the center frame 14, and a driven gear 23 is coaxially attached to a portion of the drive shaft 22 on the drive gear 21 side of the center frame 14. ing. A drive transmission chain is provided between the drive gear 21 and the driven gear 23.
24 is spanned, and the drive shaft 22 can be rotationally driven via the chain 24 by rotationally driving the drive motor 20.

A rotary shaft 26, which is rotatably held on both side surfaces of the side frame 19, is connected to both ends of the drive shaft 22 via a cylindrical connecting member 25. When the extension plate 16 is fixed at any extension position, the connecting position of the rotary shaft 26 can be adjusted. Further, each side frame of the rotary shaft 26.
Worms 27 are attached to the inner portions of 19, respectively.

A cylindrical rotating member 28 is rotatably supported between the upper surface of the side frame 19 and the extending plate 16, and the rotating member 28 has a large diameter portion 28a and a large diameter portion 28a. This large diameter part 28a
Each has a small diameter portion 28b formed below.
As shown in FIG. 5, the large diameter portion 28a of the rotating member 28 has an opening on the lower surface side of the large diameter portion 28a.
A hole 29 extending in the axial direction is formed.
A clutch spring 31 having an engaging ball 30 attached to the lower end is housed inside the. A worm wheel 32 meshed with the worm 27 is rotatably attached to the small diameter portion 28b of the rotating member 28 independently of the rotating member 28. An engaging recess 33 is formed in the engaging recess 33. A clutch mechanism 34 is configured by the engagement ball 30 of the rotating member 28 and the engagement recess 33 of the worm wheel 32, and the engagement ball 30 engages with the engagement recess 33 of the worm wheel 32. In this state, the rotating member 28 is rotated together with the worm wheel 32, and when the rotating force is applied only to the rotating member 28, the engaging ball 30 and the engaging recessed portion 33 The engagement ball 30 is disengaged and is housed inside the hole 29 against the urging force of the clutch spring 31, so that only the rotating member 28 can rotate.

Further, at the center of the rotating member 28, a rotating shaft 35 that extends below the rotating member 28 and applies an opening / closing driving force to a door (not shown).
At the lower end of the rotating shaft 35, a rotating arm 36 attached to the upper surface of the door is fixed. Further, on the upper surface of the side frame 19, the rotating member
Open and closed side limit switches 37a, 37b for limiting the amount of rotation of the door 28 at the time of opening and closing the door are arranged in an overlapping manner, and the upper end portion of the rotating member 28 has the above-mentioned each at the time of fully opening and fully closing. Pressing bars 38, 38 for pressing the limit switches 37a, 37b are attached. By adjusting the mounting position of the pressing bar 38, the amount of rotation of the rotating member 28 can be adjusted.

Next, the operation of this embodiment will be described.

First, when the door is opened, the drive motor 20 is driven to rotate the drive gear 21, thereby driving the driven gear 23 via the drive transmission chain 24 to rotate the drive shaft 22. As a result, the rotary shaft 26 is rotationally driven via the coupling member 25, and the worm 27 is rotated. This warm 27
The worm wheel 32 is rotated by the rotational drive of the. At this time, since the engaging ball 30 of the rotating member 28 is engaged with the engaging recess 33 of the worm wheel 32, the rotating member 28 is integrally rotated by the rotation of the worm wheel 32. The pivot shaft 35 and the pivot arm 36 are pivoted to open the door.

When the door is fully opened, the push bar 38 pushes the limit switch 37a on the open side, and the drive motor 20 is stopped.

When the door is closed, the drive motor 20 is driven to rotate in the opposite direction, so that the drive shaft 22
And rotating the rotating shaft (26) and rotating the rotating member (28) in the opposite direction through the worm (27) and the worm wheel (32) respectively to close the door, and when the door is fully closed, the pressing bar 38 pushes the limit switch 37b on the closing side to stop the drive motor 20.

When the door is manually opened and closed, the drive motor 20 is stopped, so the worm 27 and the worm wheel 32 are stopped, and the worm wheel 32 has a load of the drive motor 20. Is added.

Therefore, if an attempt is made to open or close the door manually, a rotating force is applied to the rotating member 28 via the rotating arm 36 and the rotating shaft 35, but the worm wheel 32 receives the load of the drive motor 20. Since it is added, the engaging ball 30 of the rotating member 28 is disengaged from the engaging recess 33 of the worm wheel 32, and only the rotating member 28 is rotated. As a result, it becomes possible to rotate the rotating member 28 in a state where the load of the drive motor 20 is not applied and manually open and close the door.

Therefore, in the present embodiment, the door can be automatically opened and closed, and when the door is manually opened and closed, the load of the drive motor 20 is not applied to the rotating member 28 and the door can be easily opened and closed. Can be opened and closed.

The present invention is not limited to the above embodiment,
The rotary shaft 35 can be directly coupled to the door to open / close the door, and various changes can be made as necessary.

[Effect of device]

As described above, the door opening / closing unit of the Buddhist altar according to the present invention can automatically open / close the door by driving the drive motor. When the door is manually opened / closed by the clutch mechanism, the door is opened / closed. The load of the motor is not applied to the rotating arm, and the door can be opened and closed easily and smoothly. Further, since the clutch mechanism is formed by the engaging ball that can be moved in and out of the hole by the clutch spring and the engaging concave portion that is engaged with the engaging ball, it is possible to use an electric clutch such as an electric clutch. It is possible to easily and quickly manually open and close the door without having to perform a clutch release operation by a specific ON / OFF operation.

[Brief description of drawings]

1 to 5 show an embodiment of a door opening / closing unit according to the present invention. FIG. 1 is a perspective view, FIG. 2 is a plan view, and FIG. 3 is a drive motor portion of FIG. FIG. 4 is a side view of the center frame portion of FIG. 2, and FIG. 5 is a side view of a portion of the side frame portion of FIG.
FIG. 6 is an exploded perspective view of a part of a conventional door opening / closing device, and FIG. 7 is a plan view of FIG. 14 …… Center frame, 19 …… Side frame, 20…
… Drive motor, 22 …… Drive shaft, 26 …… Rotary shaft, 27 …… Worm, 28 …… Rotating member, 29 …… Hole, 30 …… Engaging ball, 31 …… Clutch spring, 32 …… Worm wheel, 33
...... Engagement recess, 34 ...... Clutch mechanism, 35 …… Rotating shaft, 36
...... Rotating arm.

Claims (1)

[Scope of utility model registration request] 1. A rotary shaft for applying an opening / closing drive force to a door arranged on a Buddhist altar, and a drive motor connected to the rotary shaft via a transmission mechanism, and rotationally drives the drive motor. In the door opening and closing unit of the Buddhist altar that automatically opens and closes the door by rotating the rotating shaft, a worm that is rotationally driven by the drive motor is provided and the rotating shaft is coaxial. A rotating member having a large diameter portion and a small diameter portion attached in a circular shape is provided, and a worm wheel meshed with the worm is independently rotatable in the small diameter portion of the rotating member, and the worm wheel Is arranged so that its surface faces the end surface of the large-diameter portion, the opening is open to the worm wheel side in the rotating member, and the hole for accommodating the clutch spring in which the engaging ball is attached to the inside is formed. To form the Door opening and closing unit altar, wherein the engaging balls to the opposed surface of the large diameter portion of the Muhoiru is disposed a clutch mechanism formed by forming an engagement recess engaged.