JPH0415092Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a reclining structure for an electrically operated elevating bed that can be stored in the ceiling when not in use.

[Problems to be solved by the prior art and the invention] Today, with the diversification of lifestyles, more and more rooms are equipped with beds. Electrically-operated elevating beds that can be stored in However, in addition to sleeping on the bed, it also has the elements of a so-called healthy bed, such as the ability to watch TV or read with your head elevated, or to relieve fatigue with your feet elevated. Appearance is requested.

[Means for solving the problem] In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing a reclining structure for an electrically-operated elevating bed that can eliminate these drawbacks. In an electrically-operated elevating bed in which a bed frame provided to be able to rise and fall freely is moved up and down by forward and reverse driving of an electric motor, a winding drum is provided for separately winding the front and rear wires for suspending the bed frame, and The invention is characterized in that a clutch means is provided between the electric motor and at least one of the winding drums to connect and disconnect power transmission, and when the clutch means is disconnected, the bed frame can be operated in an inclined manner. be.

With this configuration, the present invention allows the bed frame to be tilted if necessary.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawings, reference numeral 1 denotes a rectangular-shaped elevating bed pedestal, and approximately at the center of the pedestal 1 are wires 2 that suspend the four corners of the pedestal 1.
Winding cylinders 3B and 3C that wind up B and 2C, and a sprocket 4 that inherits the driving force from the electric motor side, which will be described later.
A winding shaft 3 that pivotally supports B and 4C is installed inside. 5
is an electric motor equipped with upper and lower limit switches Lt ₁ and Lt ₂ that operate at the top and bottom of the frame 1, and the output shaft of the electric motor 5 extends on both sides, and is connected to electromagnetic clutches 6B and 6C and a sprocket 7, respectively.
B, 7C are installed, and the sprocket 4
A chain 8 is suspended between B and 7B, and between 4C and 7C. Therefore, the rotation of the electric motor 5 is controlled by the sprockets 7B and 7 via the electromagnetic clutches 6B and 6C.
The winding drums 3B and 3C are operated by the rotation of the sprockets 4B and 4C, and the wire 2
By winding up and unwinding B and 2C, the bed frame 1 is moved up and down. In addition, the top and bottom of the bed frame 1, the push button switch PBU for stopping,
PBD, PBS, and an operation mode changeover switch SW for selecting the operation of the pedestal 1 from rising to the left, rising horizontally, and rising to the right are provided at appropriate positions on the pedestal 1.

In the diagram, RyU and RyD are relays for up and down push buttons, RyB,
RyC is a relay for electromagnetic clutches 6B and 6C, RyS is a step relay for changeover switch SW, and L ₁ ,
L ₂ and L ₃ are mode indicator lights that light up when the changeover switch SW instructs leftward upward movement, horizontal movement, and rightward upward movement, respectively, and LtB and LtC are phase detection sensors for electromagnetic clutches 6B and 6C. If the setting is such that tilting operation is possible only when the pedestal 1 is at the lowest position, well-known position detection limit switches set at a predetermined height from the floor are used for the phase detection sensors LtB and LtC. Ru. Therefore, if the switch SW is set to the horizontal position, the pedestal 1 will move generally horizontally by operating the push button switch, and if the switch SW is set to the right up position, the electromagnetic clutch 6C will move. remains in a demagnetized state, and only the electromagnetic clutch 6B is energized, and the sprocket 7B on that side is energized.
When the winding drum 3B winds up the wire 2B, only one side of the pedestal 1 rises as shown by the imaginary line in FIG. 2, and becomes inclined. In this case, if the PBS operation of the stop button is delayed, it will come into contact with the lower edge rail 10 of the pedestal 1 and cause problems with normal operation, which is dangerous. Then, the phase detection sensor will automatically
LtB is activated, the electromagnetic clutch 6B is demagnetized, the electric motor 5 is turned off, and the operation of the frame 1 is stopped. When the vehicle is stopped in this inclined state, all operations and operations other than the right-hand descent operation are restricted.

In the embodiment of the present invention constructed as described above, the case where the changeover switch SW is set to the horizontal movement position will first be described. relay
Since RyS is set to ON, you can first check how the pedestal 1 operates by lighting the lamp _L2 , and by operating the push button switch PBU or push button switch PBD, the electromagnetic clutch 6 can be turned on.
Since both wires B and 6C are excited, the rotation of the motor 6 is simultaneously transmitted to both sprockets 7B and 7C, and in response to this, the winding drums 3B and 3C naturally wind and unwind the same amount of wires 2B and 2C at the same time. As a result, the pedestal 1 is horizontally moved upward or downward in the same manner as the well-known electric elevating bed pedestal 1. When both electromagnetic clutches 6B and 6C operate together (when the switch SW is in the horizontal movement position), there is no phase shift between the left and right sides of the bed frame 1, so the phase detection sensor
Both LtB and LtC are disabled.
When the pedestal 1 approaches the ceiling 12 and floor 13, the limit switches Lt ₁ and Lt ₂ are activated, the power is cut off, and the pedestal 1 is stopped.

Next, if you want to tilt the pedestal 1, which is stopped horizontally, high to the right, change the changeover switch SW to the right-up position. Then lamp _L1 lights up, so
If you press the push button switch PBU after confirming this, the electromagnetic clutch 6B will be energized and 6C will be demagnetized, so that only the winding drum 3B side will be wound up, and therefore only the right side of the pedestal 1 will rise. Recline at an angle. When the pedestal 1 rises to a certain height and reaches a predetermined inclination, the phase detection sensor LtB is activated to cut off the motor circuit, and the pedestal 1 comes to a stop.

In addition, in order to return the gantry 1, which is tilted to the right, to the horizontal position, by pressing the push button PBD while leaving the changeover switch SW as it is, only the electromagnetic clutch 6B is energized and the winding drum 3B rewinds the wire 2B. Then, the right side of the pedestal 1 is lowered, the lower limit switch _Lt2 is activated, the circuit of the electric motor 5 is cut off, and the pedestal 1 is brought to a horizontal state and stopped.

Conversely, if you want the pedestal 1 to be tilted high to the left, switch the changeover switch SW to the left raised position and press the button PBU.
It is only necessary to perform this operation, and furthermore, it is possible to return to the horizontal position by performing the reverse operation.

In this way, the present invention allows the bed frame 1 to be easily and freely tilted by simply operating the changeover switch. It can be made into a versatile product with high added value.

It should be noted that the present invention is of course not limited to the above embodiments, and the present invention is not limited to the above embodiments.
In addition to a limit switch, LtC may be controlled by using a timer to determine the time when only one electromagnetic clutch operates, or by using a phase detection sensor such as detecting the tilt angle of the frame 1 or detecting horizontal return. It is also possible to control the operation of the gantry 1.
Therefore, to return the pedestal 1 horizontally from the tilted position, reverse the changeover switch SW and activate the electromagnetic clutch on the opposite side to raise the lower part of the pedestal 1 and detect the phase when it becomes horizontal. It can also be configured to automatically stop when activated by a sensor.

[Operations and Effects] In summary, the present invention is constructed as described above, and although the bed is normally capable of being raised and lowered electrically between the storage position and the use position, the clutch means is disconnected and the bed is moved from the electric motor to one of the winding drums. If the electric motor is operated with the power transmission cut off, only the side on which the power transmission is not cut off can be raised to make the bed stand tilted. This increases the number of ways in which the elevating bed can be used, making it a highly value-added product.

[Brief explanation of drawings]

The drawing shows an embodiment of the reclining structure of the electric lift bed according to the present invention.
FIG. 1 is a plan view of the main part of the bed, FIG. 2 is a side view of the bed, and FIG. 3 is a drive circuit diagram. In the figure, 1 is a bed frame, 2B and 2C are wires,
3B, 3C are winding drums, 6B, 6C are electromagnetic clutches,
LtB and LtC are phase detection sensors, and RyS is a changeover switch.

Claims (1)

[Scope of utility model registration request] In an electrically-operated elevating bed in which a bed frame provided on a guide rail so as to be vertically movable is moved up and down by forward and reverse driving of an electric motor, a winding drum is provided which separately winds the front and rear wires that suspend the bed frame. In addition, a clutch means is provided between the electric motor and at least one of the winding drums to connect and disconnect power transmission, and when the clutch means is disconnected, the bed frame can be operated in an inclined manner. Electrically-operated elevating bed reclining structure.