JPH0751439B2 - Drive device for dual use of indoor space - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a system for partitioning a room in a building. More specifically, the present invention relates to a drive device for an indoor space dual use system for partitioning an indoor space of a building with a roof referred to in the Building Standards Law such as a concrete house or a wooden house where people live.

[Prior Art] In order to partition an indoor space in a building, there are basically many wall surfaces that are structures. In addition to structural walls, various simple partitioning means have been used since ancient times, such as curtains, erections, and letters. Only fixed partitions will limit the space available. It is not possible to completely divide the space only with curtains and standing lights. Therefore, various methods for partitioning the space in the building have been proposed.

Japanese Utility Model Laid-Open No. 48-37531 describes a living room in which a moving floor that can be vertically moved up and down by a lifting device is provided in the living room.
In terms of time and space, the usage of the living room is enhanced for multiple purposes.
Also, in Japanese Utility Model Publication No. 49-44739, the floor plate on the first floor can be raised to the position of the floor / ceiling on the second floor, and the floor plate on the second floor can be raised to almost half the distance to the ceiling. A building that doubles as a garage and a living room is described.

[Problems to be Solved by the Invention] In the prior art described in the former, a wire rope is connected to a moving floor in order to move the moving floor up and down, and the wire rope is wound up by a hoist to move the moving floor. ing. Furniture is placed on the moving floor, and the weight of the moving floor itself makes wire rope unreliable in terms of tensile strength.
In addition, it is very difficult to synchronize a plurality of ropes at the same time and wind the same amount because the mechanical complexity and the adjustment difficulty are high.

The prior art described in the latter is unknown because there is no disclosure of a specific driving means for driving the floor plate. This invention
It was invented paying attention to these, and achieves the following problems.

An object of the present invention is to provide a drive device for an indoor space dual use system, which can be driven by synchronizing each position and speed of a moving floor.

Another object of the present invention is to provide a drive device for an indoor space dual use system that can safely drive a moving floor.

[Means for Solving the Problems] This invention adopts the following means in order to solve the problems.

A drive device for an indoor space dual use system of the present invention is a building having a fixed floor of a constant height, a floor that can be positioned at the same level as the fixed floor and can move up and down, and a moving direction of the moving floor. A plurality of ball screws that are provided in the same direction as the above and are connected to the moving floor, screws that are screwed into the ball screw and that are provided on the moving bed, and a motor that is connected to rotate and drive the ball screw; Of the rotational driving power of the motor, the motor shaft rotation speed detecting means for detecting the rotation speed of the rotation shaft of the motor, and the rotation speed of the ball screw. Ball screw rotation speed detecting means for detecting, motor shaft rotation speed detected by the motor shaft rotation speed detecting means, and the ball screw rotation The ball screw rotation speed detected by the degree detection means is compared, and the discrepancy between the motor shaft rotation speed and the ball screw rotation speed exceeding the allowable fluctuation range of the motor shaft rotation speed is monitored, and when they do not coincide, It is characterized by comprising a control device for stopping the motor.

It is still more effective that the interlocking means is an annular belt-shaped power transmission means. The object can be achieved in the same manner by changing the rotational driving force of the motor to the ball screw and rotating the female screw screwed into the ball screw.

It is still more effective to provide a wall surface perpendicular to the plane including the moving floor so as to be movable at least in a direction parallel to the moving floor.

[Operation] Press the lift push button to raise the moving floor. The control device issues a rotation command to the motor. The output signal of the rotation detection means provided in the motor is fed back to the control device. On the other hand, the rotational driving force of the motor simultaneously rotates the other plurality of ball screws. By this rotational driving force, the rotation detecting means provided on each shaft of the ball screw inputs a rotation signal to the control device. The control device compares the output signal from the rotation detecting means of the motor with the output pulse signal from each ball screw to monitor whether each ball screw is normally rotating at a constant speed.

When these signals do not match more than a certain value, the motor is stopped. When the moving floor is located at the highest rising end, the upper limit switch is activated, and the moving up of the moving floor is forcibly stopped by pushing the rising push button any further. When the lowering push button is also pressed in the same manner, the moving floor continues to lower but temporarily stops at the stop position. Here, if the lowering push button is continuously pressed while confirming safety, the moving floor is lowered. However, the moving floor cannot descend below the lower limit switch.

[Examples] Examples will be described below with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a drive device for an indoor space dual use system, showing a state in which a moving floor is flush with a fixed floor.
FIG. 2 is a view showing a state in which the moving bed is raised above the fixed bed. The moving floor 1 is a floor covered with boards in this example. However, other rugs such as tatami mats and carpets may be used. The fixed floor 2 is provided at the same height level as the level where the moving floor 1 is located at the lowermost position. When the fixed floor 2 and the moving floor 1 are at the same level, the same floor area increases, which is convenient for use. On the other hand, pillars 3 are provided at the four corners of the moving floor 1.

As will be described later, the ball screw 20 (fourth
It is installed along the pillar 3 so that the figure is not visible.
A storage space 4 is formed under the moving floor 1. The storage space 4 may have a bed, furniture, etc. as a living room,
It may be a warehouse to store things. Since the storage space 4 is a floor surface having a height level lower than that of the fixed floor 2, a staircase 5 for access is provided. FIG. 3 is a perspective view showing an overview of only the frame structure shown in FIGS. A lower column 10 is integrally welded or bolted to the lower ends of the four columns 3.

Four lateral girders 11 are connected in a rectangular shape on the side surfaces of the four lower pillars 10. Further, a vibration-proof rubber 12 is integrally provided at the lowermost ends of the four lower columns 10. A base 13 is integrally provided on the lower surface of the anti-vibration rubber 12. The anti-vibration rubber 12 is for preventing the vibration of the motor 30 described later from being transmitted to the building. On the contrary, it is for preventing the vibration from the building from being transmitted to the frame. Four upper transverse girders 14 are connected to the upper portion of the four pillars 3 in a rectangular shape. The rectangular motor cover 6 on the cross beam 14 is a motor described later.
A drive mechanism such as 30 is built in. After all, the frame of this embodiment has a box shape.

In the area surrounded by the four pillars 3, a movable floor 1 is provided so as to be vertically movable. The moving floor 1 is moved up and down by a drive mechanism incorporated in the pillar 3. FIG. 4 is a sectional view taken along line IV-IV in FIG. 3 showing the vertical drive mechanism of the moving floor 1. Four pillars 3
A ball screw 20 is incorporated therein. The ball screw 20 is a screw shaft that meshes with the ball nut 51 of the moving claw 50. The thrust bearing 21 is located above and below the ball screw 20.
Supported by. A guide shaft 22 is provided in parallel with the ball screw 20.

Like the ball screw 20, both upper and lower ends of the guide shaft 22 are fixed to the frame. A ratchet lock mechanism 23 (see FIG. 6) described later is provided at the uppermost end of the ball screw 20. At one end of the shaft of the ratchet lock mechanism 23,
A belt pulley 24 is provided. A coupling 25 is further connected to one end of the belt pulley 24.
25 is connected to the output shaft of the motor 30. After all, the motor
A coupling 25, a belt pulley 24, a ratchet lock mechanism 23, and a ball screw 20 are connected to the output shaft of 30 in this order.

The motor 30 incorporates a speed reducer 29 and an electromagnetic brake 28 that operates when the motor is stopped. This type is well known and its structure and function will not be described in detail.
The rotation speed of the motor 30 is detected and output by the pulse generator 27. A timing belt 31 is stretched around the belt pulley 24. The timing belt 31 is
Through the tension pulleys 32, 32, the timing pulley 24 in the other column 3 is driven to drive the ball screw 20.
Since all the timing pulleys 24 in the upper part of the four columns 3 are driven by the timing belt 31, all the four ball screws 20 are simultaneously driven to rotate.

FIG. 6 is a plan view showing the ratchet lock mechanism 23. The ratchet wheel 40 is provided with teeth 41 at equal angles on the outer circumference. At the outer peripheral position of the ratchet wheel 40, a presser pawl 42 is provided rotatably around a shaft 43. A spring 44 is provided at one end of the presser pawl 42, and always presses the presser pawl 42 toward the teeth 41.
On the other hand, at one end of the presser foot 42, the movable shaft 46 of the solenoid 45 is
Are connected. When the motor 30 is moving, the solenoid is always
Current is applied to the coil of 45, drives the movable shaft 46, and
Since it is pulled against 44, the ratchet wheel 40 and the ball screw 20 can freely rotate.

A moving claw 50 is screwed into the ball shaft 20. Moving claw 50
Is a guide hole for inserting the female screw 51 and the guide shaft 22.
Has 52. The guide hole 52 and the guide shaft 22 are fitted with play. Therefore, the ball screw 20
When the rotation is driven, the moving claws 50 in the four columns 3 simultaneously move up and down along the guide shaft 22.

FIG. 7 is a functional block diagram of the control device. Control device
Reference numeral 60 is a control device for ON / OFF controlling the motor 30. A pulse generator 61 is attached to each ball screw 20, and when the ball screw 20 is rotationally driven, a pulse signal is generated from each pulse generator 61,
It is input into the control device 60. The motor 30 is driven by turning on the magnet switch 62 according to a command from the control device 60. When the motor 30 is rotationally driven, the output of the pulse generator 27 connected to the rotary shaft of the motor 30 is input to the control device 60.

The raising push button 63 is a switch for moving the moving floor 1 upward, and when the raising push button 63 is pressed, the moving floor 1 continues to rise. The lowering push button 64 is for lowering the moving floor 1, and once pushed, the moving floor 1 confirms safety and continues lowering, and temporarily stops at a position of about 300 mm of the fixed floor 2. After that, the movable floor 1 is lowered to the level of the fixed floor 2 only when the lowering push button 64 is continuously pressed. The upper limit switch 65 is provided at the upper end of the pillar 3, and the moving floor 1 does not rise above the upper limit switch 65.

The lower limit switch 66 is provided at the lower end of the pillar 3,
The lower limit switch 66 or higher does not descend. The stop switch 67 is a detection switch for stopping the moving floor 1 at a position about 300 mm in this example from the fixed floor 2.

Operation The operation of the above embodiment will be described below. FIG. 8 is a flowchart showing an outline of the operation of the control device. To raise the moving floor 1 from the state of the moving floor 1 shown in FIG.
Press 63. When the lift push button 63 is pressed, the control device 60
After confirming the operation of the upper limit switch 65 via, the ratchet lock mechanism 23 is unlocked and the motor brake is released, the magnet switch 62 is turned on to issue a rotation command to the motor 30. Pulse generator 27 provided on the motor 30
The output signal of is fed back to the control device.

On the other hand, the rotational driving force of the motor 30 is transmitted via the belt pulley 24 and the timing belt 31 to the other three ball screws 20.
Rotate at the same time. By this rotational driving force, the pulse generator 61 provided on each shaft of the ball screw 20 is rotationally driven to generate a rotational pulse signal, and this signal is input to the control device 60. The control device 60 compares the output signal of the pulse generator 27 of the motor 30 and the output pulse signal of each ball screw 20 to each ball screw at a constant speed.
Monitor if 20 is spinning.

This monitoring uses the output signal of the pulse generator 27 of the motor shaft as a reference pulse, and compares this reference pulse with the output pulse of another pulse generator 61. This comparison is
The pulse generated from the pulse generator 61 is missing. If the pulse width extends, it is judged as abnormal rotation. However, the range of the rotational fluctuation rate of the motor 30 is allowed, and the range of the rotational fluctuation rate is not judged as abnormal. When these signals are not equal to or more than a certain value, the motor 30 is stopped.

When the moving floor 1 is located at the highest end, the upper limit switch 65
Is activated, the movement of the moving floor 1 is forcibly stopped even if the lift push button 63 is pressed. When the down push button 64 is pressed once, the moving floor 1 operates a temporary stop switch 67 provided at a position above 300 mm above the fixed floor 2 to temporarily stop for safety confirmation. After that, the moving floor 1 continues to descend only when the operator confirms the safety and continues to press the descending push button 64. However, the lower floor switch 66 and above cannot lower the moving floor 1.

[Other Embodiments] The ball screw 20 of the above embodiment was incorporated into the four columns 3. However, it is not necessary to limit the number of moving beds 1 having a large area. FIG. 8 shows an example using eight ball screws 20. Since the ball screw is installed in the central part and the middle part of the outer circumference, a moving floor with a large area 1
Applicable to The example of FIG. 9 is an example in which the moving partition 70 is provided on the moving floor 1. A ball screw (not shown) of the same structure as described above for driving the moving partition 70 in the two cross beams 14.
Is built in. Moving claw driven by ball screw
The moving partition 70 is driven by 71.

However, the ball screw (not shown) in the moving floor 1 is
It is difficult to mechanically interlock with the ball screw in the cross beam 14. For this reason, another motor for driving the ball screw of the moving floor 1 is provided in the moving bed 1 and is electrically linked to the driving of the ball screw in the cross beam 14. This electric interlocking control device is well known in other technical fields and will not be disclosed here. It should be noted that the moving partition 70 may be configured so that it does not move up and down, but a drive mechanism for up and down movement is provided so that it can also move up and down.

The timing belt 31 in the above embodiment is a belt with teeth, but is not limited to this. Any known power transmission means such as a chain or a combination of a rotating rod and a gear can surely transmit power. In the above embodiment, the motor 30 is used to drive the ball screw. As the motor 30, a general-purpose induction motor is simply used for ON / OFF control. However, as will be understood from the above description, other driving means such as a known electric servo motor, hydraulic servo motor, or air mower may be used as long as the above operation is possible.

In the above embodiment, the ball screw 20 is rotated to move the moving floor up and down. However, the movable floor 1 may be moved up and down by rotating the female screw 51 without rotating the ball screw 20. As the interlocking method for driving the female screw 51, teeth are provided on the outer periphery of the female screw 51, and the timing belt 31 is engaged with these teeth to interlock.

[Effects of the Invention] As described in detail above, the drive device of the dual use system for the same space in the room according to the present invention can be reliably driven in synchronization without deformation of the moving floor. A moving floor where a plurality of people move with heavy objects placed on one side does not exert excessive stress on the ball screw.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a building to which the double use system of indoor space is applied, FIG. 2 is a diagram showing a state where the moving floor of FIG. 1 is raised, and FIG. 3 is double use of indoor space. FIG. 4 is a perspective view showing the structure of the frame of the system, FIG. 4 is a sectional view taken along line IV-IV of FIG. 3, which shows a drive mechanism for the moving floor, FIG. 5 is a sectional view taken along line VV of FIG. 4, and FIG. 6 is a ratchet lock mechanism. And IV- in FIG.
FIG. 7 is a plan view showing an IV cross section, FIG. 7 is a functional block diagram showing an outline of the control device, FIG. 8 is a flow diagram showing an outline of functions of the control device, and FIG. 9 is a plan view showing another embodiment. FIG. 10 is a perspective view showing another embodiment having a moving partition. 1 ... moving floor, 2 ... fixed floor, 3 ... pillar, 20 ... ball screw, 22 ... guide shaft, 23 ... ratchet lock mechanism, 30 ... motor

Claims (4)

[Claims] 1. In a building having a fixed floor of a fixed height, a floor that can be positioned at the same level as the fixed floor and that can move up and down, and the moving floor provided in the same direction as the moving direction of the moving floor. A plurality of ball screws connected to each other, a screw screwed into the ball screw and provided on the moving floor, a motor connected to rotate the ball screw, and a rotational driving force of the motor to the ball screw. Interlocking means for transmitting and interlocking rotation drive, motor shaft rotation speed detecting means for detecting the rotation speed of the rotation shaft of the motor, and ball screw rotation speed detection for detecting the rotation speed of the ball screw. Means, a motor shaft rotation speed detected by the motor shaft rotation speed detection means, and a ball detected by the ball screw rotation speed detection means. Controller for stopping the motor when the motor shaft rotation speed exceeding the allowable fluctuation range of the motor shaft rotation speed and the ball screw rotation speed are compared with each other by comparing with the screw rotation speed. A drive device for a dual use system of an indoor space, comprising: 2. The drive device for an indoor space double use system according to claim 1, wherein the interlocking means is an annular belt-like power transmission means. 3. A drive unit for an indoor space dual use system according to claim 1, wherein the rotational driving power of said motor is transmitted to a female screw screwed into said ball screw instead of said ball screw. 4. A wall surface perpendicular to a plane including the moving floor is provided so as to be movable at least in a direction parallel to the moving floor according to one of claims 1, 2 and 3. Drive device for double use system of indoor space.