JPH044243Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an automatic operation canceling device for a chair, etc., and is capable of canceling the automatic operation and stopping the chair, etc. by operating an arbitrary operation button during the execution of the automatic operation. With the goal.

Conventionally, chairs, etc. have been required to automatically perform operations such as raising the chair to a predetermined position determined by the physique of the engineer and returning it, and a self-holding circuit has been set up according to each operation. By activating the system, this requirement was satisfied.

It is also necessary to be able to cancel the automatic operation during the automatic operation.
For this purpose, the automatic operation can be canceled by operating a switch for manual operations such as raising and lowering, or by operating a cancel switch.

However, in this case, even if you cancel the automatic operation by operating the manual operation switch, the chair, etc. will still rise or fall, so it is not possible to cancel the automatic operation and stop the chair, etc. at the same time. This is inconvenient as a means of canceling automatic operation in an emergency. Also, by operating a cancel switch, you can cancel the automatic operation and stop the chair, etc. at the same time, but the cancel switch is one of many switches, and it can be activated accurately in an emergency. It is almost impossible to manipulate and is extremely inconvenient in practice.

The present invention solves the above-mentioned drawbacks by making it possible to reliably cancel the automatic operation and keep the chair etc. in a stopped state by simply operating one of the operation switches during the execution of the automatic operation. Embodiments will be described in detail below with reference to the accompanying drawings showing examples.

FIG. 1 is a block diagram of the automatic operation release device of the present invention, which includes a manual operation switch group 1, an automatic operation switch group 2, and a first gate 4 to which an output signal from the automatic operation switch group 2 is applied. and a second gate 3 that applies an output signal from the first gate 4 or the manual operation switch group 1, and a manual operation signal outputted through the second gate 3 to control the chair, etc. A manual operating section 6 for operating;
A self-holding circuit 5 that self-holds the automatic operation signal outputted through the second gate 3, an auto-actuating section 7 that operates a chair, etc. by applying the output signal of the self-holding circuit 5, and an automatic operation execution unit 7. Sometimes the second
The control unit 8 closes the gate 3 and releases the self-holding state of the self-holding circuit 5 and the control unit 8 in response to an output signal from the manual operation switch group 1 or the automatic operation switch group 2 during automatic operation. The emergency release section 9, the detection section 10 that outputs an automatic operation end signal, and by applying the signal, the self-holding state of the self-holding circuit 5, the control section 8, and the emergency release section 9 are canceled and returned to the reset state. Release part 1 for
It is composed of 1.

FIG. 2 is an electrical wiring diagram that is a more specific version of the block diagram in FIG.
are each made up of an AND gate, and the self-holding circuit 5, control section 8, emergency release section 9, and release section 11 for reset are each made up of a flip-flop.

The operation of the automatic operation release device having the above structure is as follows.

First, when any automatic operation switch is operated, an output signal is applied to the self-holding circuit 5 through the first gate 4 and the second gate 3, and is self-held. Therefore, the automatic operation section 7 is activated, and the chair or the like can be raised, lowered, etc. to the set position.
Also, during this period, the self-held signal is transmitted to the control unit 8.
, the second gate 3 is closed and transmission of output signals from other switches is cut off. Then, the emergency release unit 9 is placed in a state where it can accept signals.

If you need to stop the chair, etc. while canceling the automatic operation while performing the above automatic operation, you can operate either the manual operation switch or the automatic operation switch as follows. It is possible to stop the chair, etc. at the same time as canceling the automatic operation.

That is, the self-holding state of the self-holding circuit 5 is canceled by the release signal from the emergency release section 9 in response to a signal outputted by operating one of the switches, thereby making it possible to cancel the automatic operation. Then, when the operation of the switch is released, another release signal is output from the emergency release section 9, so that the control section 8
The self-holding state of the switch is released, and the second gate 3 is opened to enable transmission of the output signal of either switch again.

By the above-described operation, the operation of the automatic operation section 7 can be stopped, and the manual operation section 6 can be maintained in a stopped state, so that the chair etc. can be reliably stopped at the position where the automatic operation is canceled.

If no switch is operated during the execution of automatic operation, the detection section 10 outputs an automatic operation end signal and applies a release signal from the release section 11 to the self-holding circuit 5 to activate the automatic operation section 7. This completes the automatic operation. The release signal is also applied to the control unit 8 and the emergency release unit 9,
Their self-retention is released. Furthermore, in order to close the first gate 4 in response to the automatic operation end signal and prevent the same automatic operation from being performed again, transmission of the output signal of the corresponding automatic operation switch can be cut off.

If automatic operation is not to be performed, the manual operation section 6 can be operated by operating the manual operation switch to raise, lower, etc. the chair or the like. In this case, since no self-holding circuit is provided, the amount of operation of the chair, etc. can be determined in accordance with the operation time of the manual operation switch.

As described above, the present invention is capable of interrupting the automatic movement of a chair, etc. and keeping the chair, etc. in a stopped state by operating any switch during automatic movement. This eliminates the need to search for a specific switch from among the switches, and has the unique practical effect of being able to quickly and reliably hold a chair or the like in a stopped state in an emergency.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the automatic release device of the present invention. Figure 2 is the electrical wiring diagram. Figure 3 is the same time chart. 1...Switch group for manual operation, 2...Switch group for automatic operation, 3...Second gate, 4...First gate, 5...Self-holding circuit, 6...Manual operation section, 7...Auto Actuating section, 8... Control section, 9...
... Emergency release section, 11 ... Release section, 10 ... Detection section.

Claims (1)

[Scope of utility model registration request] In a chair, etc., which automatically moves the seat to a predetermined position by self-holding the output signal of one of the automatic operation switches out of a plurality of automatic operation switch groups, a plurality of manual operation switch groups are used. 1, a plurality of automatic operation switch groups 2 that are selectively pressed according to their respective purposes, a first gate 4 through which an output signal from the automatic operation switch group 2 passes, and the first gate 4, a second gate 3 through which the output signal from the manual operation switch group 1 passes, a manual operation section 6 for manually operating a chair or the like based on the manual operation output signal from the second gate 3; a self-holding circuit 5 that self-holds the automatic operation output signal from the gate 3; an auto-operating section 7 that automatically operates a chair or the like based on the automatic operation output signal from the self-holding circuit 5; A control section 8 closes the self-holding circuit 5 and the control section 8 upon receiving outputs from the manual operation switch group 1 and the automatic operation switch group 2 during the automatic operation. an emergency release unit 9 that releases the self-holding state; a detection unit 10 that outputs an automatic operation end signal when the position of the operating unit reaches a preset position; An automatic operation release device for a chair or the like, comprising a self-holding circuit 5, a control section 8, and a release section 11 that releases the self-holding state of an emergency release section 9 to clear the automatic operation setting state.