JPH03188806A - Method and device for controlling lumber plate - Google Patents

Abstract

PURPOSE:To reduce fatigue of a person sitting on a seat so as to prevent accumulation of his fatigue by alternately outputting rectangular pulses with a specific cycle and pulse width to a pair of relays during automatic control and repeatedly driving a motor in its normal and reverse directions so as to move a lumber plate in its longitudinal direction. CONSTITUTION:A control device 10 is equipped with a motor 12, a select switch 14, a manuals witch 16, a pulse generator 18 and an alternate driving circuit 20 and is so formed that movement of a lumber plate 22 in its longitudinal direction can be controlled by driving of the motor. When the main contact 14a of the select switch is changed to auto side 14c, manual side 14b is shut off and also a signal is inputted to the alternate driving circuit 20 so that the circuit 20 is turned on. Then rectangular pulses output from the pulse generator 18 are distributed to the output ends 30, 32 of the alternate driving circuit 20 and are inputted to relays RL1, RL2 via passages L2, L3 and the motor 12 is driven in the respective directions of the relays for the period of time corresponding to the pulse width. The lumber plate 22 is put in a reciprocating movement in its longitudinal direction and in a distance corresponding to the pulse width so as to press vertebrae of a person on a seat in a predetermined cycle.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention adjusts the longitudinal position of the lumbar plate by controlling the drive of a motor, and supports the lumbar vertebrae of a seated person under the desired lumbar support force. Ramper Sabo i to reduce fatigue
-Relating to a control method and a lumbar support control device.

[Conventional technology]

For example, it is installed on the seat back of a vehicle seat and supports the lumbar vertebrae of the seated person with an appropriate supporting force.
Lumbar support devices are known that stabilize the sitting posture and reduce fatigue.

The lumbar support device includes, for example, a lumbar plate that supports the lumbar vertebrae of a seated person, and as the lumbar plate moves in the direction of pressing the lumbar vertebrae (forward direction), the lumbar support force from the lumbar plate is applied to the lumbar vertebrae of the seated person. act,
It is configured to be able to support the lumbar vertebrae of the seated person. Among such lumbar support devices, a power-type lumbar support device is known, which adjusts the lumbar support force from the lumbar plate by controlling the forward and backward movement of the lumbar plate by driving a motor, for example.

Drive control of the motor is normally performed by operating a switch, and the switch is disposed, for example, at a position II that can be operated while the vehicle is in a seated position during travel.

According to such a power type lumbar support device,
The seated person can arbitrarily adjust the longitudinal position of the lumbar plate, that is, the lumbar support force from the lumbar plate, according to their preference or degree of fatigue, without losing their sitting posture.
Efforts are being made to reduce fatigue caused by driving.

[Problem to be solved by the invention]

By the way, when driving for a long time, the fatigue level of the seated person changes greatly as the driving time passes, and the degree of fatigue after long driving and the initial setting of lumbar play i. There is a difference between the support force of the lumbar vertebrae, and fatigue tends to accumulate in the lumbar vertebrae. Therefore, it is preferable to adjust the front and rear positions of the lumbar plate and relieve the accumulated fatigue under the lumbar support force from the lumbar plate according to the degree of fatigue.

However, in the known configuration, the lumbar plate in the resting state merely presses the lumbar vertebrae of the seated person under a constant lumbar support force.

Therefore, the lumbar support force required to alleviate accumulated fatigue cannot be obtained in 1 minute, and fatigue cannot be reduced in 1 minute.

Furthermore, since fatigue is not reduced or alleviated within 1 minute, accumulation of fatigue is unavoidable.

An object of the present invention is to provide a lumbar support control method and a lumbar support control device that reduce fatigue of a seated person in one minute.

[Means to solve the problem]

In order to achieve this object, according to the ramper support 1 and control method of the present invention, manual control and automatic control of the motor can be arbitrarily selected. Then, during automatic motor control, rectangular pulses with a predetermined generation cycle and pulse width are output alternately to a pair of relays, and the corresponding relay contacts are crossed! 1. By switching to
The motor is repeatedly driven in the forward and reverse directions to repeatedly move the lumbar plate in the front and rear directions.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in FIGS. 1 and 2, the lamp support 1/control device 10 according to the present invention includes a motor 12, a select switch 14, a manual switch 16, a pulse oscillator 18, and an alternating drive circuit 20. The movement of the lumbar plate 22 in the front-rear direction can be controlled by driving the motor. For example, a DC geared motor can be used as the motor 12, and when the motor is driven (forward rotation, reverse rotation), the lumbar plate 22
is moved forward and backward.

As shown in FIG. 2, the lumper play i.
For example, it is installed in the back 26 of the Dry Pern-1/24 and is configured to support (press) the lumbar vertebrae of the seated person during movement in the forward direction. Here, the lumbar plate 22 and the lumbar plate drive mechanism have a known configuration, and it is sufficient that the lumbar plate can be moved in the front and rear directions by driving the motor, so a detailed description thereof will not be given. For example, the select switch 14 includes a main contact 14a and a two-position switching contact 14.
A self-holding seesaw type switch having the functions b and 14c can be used. The main contact 14a of the select switch is connected to a power source, for example, a car battery 28, and switches the incoming light from the battery to the switching contacts 14b, 1.
4c.

Further, as the manual switch 16, for example, an automatic return type seesaw type switch has a main contact 16a and two-position switching contacts 16b to 16C, and has a neutral position in which the main contact does not contact any of the two-position switching contacts. is available. The main contact 16a of the manual switch is connected to the switching contact 14b of the select switch, and the switching contact 14b is formed as the manual control side of the select switch 14.

As shown in FIGS. 1 and 2, relays RLI and RL2 are connected to switching contacts 14b and 14C of the manual switch, respectively, and each relay contact 11
L1a, R1, and 2a are connected to the motor 12.

Then, as the relays H1 and l11.2 are energized by switching the manual switch 14, the - contact RL1 is activated.
a R1 and 2a are switched, and the rotation direction of the motor 12 can be changed as appropriate.

For example, the main contact 14a of the select switch is
Assume that it is on the b side (manual control side).

At this time, manual side (-17) main contact 16a
When the switch is switched from the neutral position to the contact 16b side, the current from the battery 28 flows through the select switch 14 and the manual switch 16 to the relay RL.
1 and relay 1 (Ll is energized. Then,
As the old relay 1 is energized, the relay contact RL1a is switched, and the motor 12 is rotated in the normal rotation direction to move the lumbar plate 22 in the 1111 forward direction.

Also, the main contact 16a of the manual switch is replaced with the contact 16c.
When switched to the side, current from the battery 28 flows from the main contact 16a to the contact 16c, energizing the relay 11L2. Then, as the relay old 2 is energized, the relay contact 1112a is switched, and the motor 12 is rotated, for example, in the reverse direction by μ'', and the lumbar plate 2
2 in the backward direction.

In such a configuration, by switching the select switch 14 to the manual side 14b, the manual 7 and switch 16 can be operated, and the longitudinal position of the lumbar plate 22 can be adjusted as desired.

0 Therefore, the lumbar support force can be easily adjusted according to the sitting person's preference, degree of fatigue, etc. by operating the manual switch 16.

Further, as shown in FIGS. 1 and 2, the lumbar support control device 10 of the present invention includes, for example, a pulse oscillator 18 and an alternating drive circuit 20 connected to the lumbar support controller 10.

The pulse oscillator 18 is connected to, for example, a battery 28, and converts input from the battery into, for example, a rectangular pulse (rectangular wave) having a predetermined generation cycle and pulse width.
(see figure), and is configured to be able to output rectangular pulses to the alternating drive circuit 20. The pulse oscillator 18 is formed using a timer IC, for example.

Here, as shown in FIG. 1, for example, resistors 11a, Ilb, Ilc, and capacitors Ca and Cb are connected to the pulse oscillator 18, and the pulse width and generation period of the rectangular pulse are determined by these resistance values and capacitances. It is determined. For example, the generation period T of a rectangular pulse is T←3Note! . Then, the pressing period by the lumbar plate 22 is determined from the generation period T of the rectangular pulse, and the pressing force by the lumbar plate is determined from the duty ratio determined by thl/T.

Further, as shown in FIG. 1, the alternating drive circuit 20 has, for example, two systems of output terminals 30 and 32, and each output terminal is
By path 1.2, 1.3, relay old 1. Each is connected to the human power side of R1゜2. As shown in FIGS. 1 and 3, the configuration is such that the rectangular pulses from the pulse oscillator 18 output to the path 11 can be alternately distributed to the paths 12 and 1.3 at the respective output ends. ing. In such a configuration, the rectangular pulse from path 12.13 is routed through relay old-1. In addition, the input end of the alternating drive circuit 20, which is input to the old-2, is connected to the switching contact 14c of the select switch, and in response to the input signal from the contact 14c, a rectangular 1 2 pulse is output from the output end 30.32. Contact +4C is formed as an auto side of the select switch 14.

For example, when the main contact 14a of the select switch is switched to the auto side 14c, the manual side 14b is cut off, a signal is input to the alternating drive circuit 20, and the alternating drive circuit is turned on. Then, the rectangular pulses output from the pulse oscillator 18 are distributed to the output terminals 30.32 of the alternating drive circuit 20, and the distributed rectangular pulses are transmitted to the relay RL1 via the path 12.13.
．． The pulses are input to RL2, and the motor 12 is driven in each direction for a time corresponding to each pulse width.

In other words, as you can see from Figure 3, first, route 1.
Relay R1,1 is energized by the second rectangular pulse, relay contact old 1a is switched, motor 12 rotates forward for a time corresponding to the pulse width, and lumbar plate 22 is advanced by a corresponding distance. Next, a rectangular pulse occurs on path [3, energizing relays R1 and 2, and relay contact old 2
a, the motor 12 is reversed, and the lumbar plate 22 is moved backward. In this way, the rectangular pulses alternately outputted from the output ends 30, 32 of the alternating drive circuit cause the lumbar plate 22 to perform a piston movement in the front-rear direction over a distance corresponding to the pulse width of the rectangular pulses.
The lumbar vertebrae of the seated person are repeatedly pressed under a predetermined cycle.

Unlike known configurations in which the lumbar vertebrae of a seated person are only pressed by a stationary lumbar plate, according to the present invention, the lumbar vertebrae can be repeatedly pressed at a predetermined period as described in section 2. It is composed of Therefore, the lumbar support force from the lumbar plate 22 acts on the lumbar vertebrae of the seated person under the so-called acupressure effect, and the fatigue of the seated person is alleviated within 1 minute. Therefore, even during long-time operation at °C1,
The accumulation of fatigue of the seated person can be suppressed, and the fatigue can be reduced within 1 minute.

It is sufficient that the output pulse for driving the motor 12 is converted into a rectangular pulse and the rectangular pulses are alternately outputted so that the lumbar plate 22 can be moved repeatedly in the front and rear directions. Therefore, the lumbar plate 22, drive 3 4 mechanism, etc. of the lumbar support device can be used as they are in the known configuration, and the configuration does not become complicated.

Furthermore, in the present invention, the lumbar plate 22 is repeatedly moved in the front and back direction, and the effect of acupressure on the lumbar vertebrae of the seated person reduces fatigue.

In other words, while the pie-rayon effect that constantly applies small vibrations to a seated person gives the seated person a sense of uneasiness, this invention does not cause the driver to feel uneasy while driving. It has no negative impact.

By the way, the generation period and pulse width of the rectangular pulse from the pulse oscillator 18 are calculated by the above-mentioned formulas1.Here, as shown in FIG. and resistance Rb, rfc
By changing the resistance value of the rectangular pulse, the generation cycle and pulse width of the rectangular pulse can be adjusted as appropriate.

Since the generation cycle of the rectangular pulse is proportional to the resistance value of the resistor nb, the resistor 11b is used as a cycle adjustment means 34, and is configured as a variable resistor for adjusting the pressing cycle by the lumbar plate 22, for example.

Further, since the pulse width, that is, the duty ratio is proportional to the resistance value of the resistance tic, the resistance Rc is used as the duty ratio adjustment means 36, and for example, the pressing force (lumbar support force)
Configured as a variable resistor for adjustment.

For example, variable resistor RC (duty ratio adjustment means 36
) and increase the resistance value of resistor 11c,
As shown in FIG. 4, a rectangular pulse with a long pulse width is transmitted from the pulse oscillator 18 to the path 1-1 without changing the generation cycle.
1. Then, the rectangular pulses input via the path 11 are distributed by the alternating drive circuit 20, and the distributed rectangular pulses are transmitted from the output end 30.32 via the paths 12, 1.3 to the relay old 1. Each is output to old 2. Then, the motor 12 is driven alternately in the forward rotation direction and the reverse rotation direction for a time corresponding to the pulse width, and the lumbar plate 22 repeatedly moves forward and backward. In this way, by adjusting the variable resistor Rc, the duty ratio of the rectangular pulse can be adjusted steplessly without changing the generation cycle of the rectangular pulse, that is, the lumbar support 56 by the lumbar plate 22 can be adjusted steplessly. I can do it.

Further, by adjusting only the variable resistor Rb (cycle adjustment means 34), the generation cycle of the rectangular pulse can be adjusted without changing the pulse width.

According to such a configuration, the generation period and pulse width of the rectangular pulse can be appropriately adjusted individually and steplessly by adjusting the variable resistors Rc and Rb. Therefore, by arbitrarily adjusting the appropriate lumbar support force according to the seated person's preference, degree of fatigue, etc., fatigue during driving can be more reliably reduced.

The above-mentioned embodiments are for illustrating the present invention, and are not intended to limit the scope of the present invention, and all modifications and modifications within the technical scope of the present invention are also included in the present invention. Needless to say.

〔Effect of the invention〕

As described above, according to the lumbar support control method according to the present invention, manual control and automatic control of the motor can be arbitrarily selected. During automatic control of the motor, rectangular pulses with a predetermined generation cycle and pulse width are output alternately to a pair of relays, and the corresponding relay contacts are switched to cross r1) to rotate the motor in the forward direction. , is repeatedly driven in the reverse direction, and the lumbar plate is repeatedly moved in the front and rear directions.

In other words, the pressure from the lumbar plate repeatedly acts on the lumbar vertebrae of the seated person, which acts on the lumbar vertebrae of the seated person under the so-called acupressure effect, and the fatigue of the seated person is alleviated within 1 minute. . Therefore, even during long-term driving, the accumulation of fatigue of the occupant can be suppressed, and the fatigue can be reduced even more.
・Can be measured in minutes.

Further, according to the configuration in which the generation period and pulse width of the rectangular pulse can be adjusted arbitrarily, the period of pressing the lumbar vertebrae by the lumbar plate and the pressing force can be adjusted steplessly. Therefore, the seated person can accurately adjust the pressing period and pressing force according to his/her preference and degree of fatigue, thereby more reliably alleviating and alleviating fatigue.

Further, according to the lumbar support control device of the present invention, the lumbar support control method described in ``2'' can be appropriately carried out, and a known configuration can be used as the lumbar plate drive mechanism. Therefore, it is possible to obtain a lumbar support control device that does not have a complicated configuration and is relatively inexpensive.

Furthermore, if the period adjustment means and the duty ratio adjustment means are provided separately, the generation period and pulse width of the rectangular pulse can be adjusted individually. Therefore,
A lumbar support control device that can reliably reduce fatigue can be easily obtained by providing an appropriate lumbar support force according to the preferences of the seated person, the degree of fatigue, etc.

If both the period adjustment means and the duty ratio adjustment means are constructed from variable resistors, the generation period and pulse width of the rectangular pulse can be adjusted steplessly. Therefore, the lumbar support force from the lumbar plate can be adjusted more accurately according to the seated person's preference, degree of fatigue, etc.

[Brief explanation of drawings]

FIG. 1 is a detailed block diagram of the ramper sabot 1 control device according to the present invention, FIG. 2 is a schematic block diagram of the ramper sabot 1 control device, and FIGS. 3 and 4 are timetables of the ramper sabot 1 control device. It is a chart. 10: Lumbar support control device, 12: Motor, 14
: Select switch, 16: Manual switch, 18
: Pulse oscillator, 20: Alternate drive circuit, 22: Lumbar plate, 24: Seat (driver seat), 34:
Cycle adjustment means (variable resistor Rb), 36: Duty ratio adjustment means (variable resistor 1 (C).

Claims (5)

[Claims] (1) In a lumbar support control method that adjusts the longitudinal position of a lumbar plate that supports the lumbar vertebrae of a seated person by controlling the drive of a motor, manual control or automatic control of the motor is arbitrarily selected using a select switch, and the motor manual control method is used. During control, the motor is driven in any direction corresponding to the switch operation to arbitrarily adjust the longitudinal position of the lumbar plate, and during auto control of the motor, the motor is driven in any direction corresponding to the switch operation, and the predetermined generation cycle and pulse width are Lumbar support control that alternately outputs rectangular pulses to a pair of relays and alternately switches the corresponding relay contacts to drive the motor repeatedly in the normal direction and reverse direction, repeatedly moving the lumbar plate in the front and rear directions. Method. (2) A claim in which the generation period and pulse width of the rectangular pulse are variable, and by changing the generation period and pulse width of the rectangular pulse, the pressing period by the lumbar plate and the pressing force from the lumbar plate are respectively adjusted. The lumbar support control method according to item 1. (3) Supports the lumbar vertebrae of the seated person and allows movement in the front and back direction.
A lumbar plate installed inside the seat back, a motor for moving the lumbar plate in the front and back direction, a pulse oscillator capable of oscillating rectangular pulses with a predetermined generation cycle and pulse width, and distributing the rectangular pulses from the pulse oscillator. At the output ends of the two systems, there is an alternating drive circuit that outputs rectangular pulses alternately, a select switch for selecting manual control or automatic control of the motor, and a corresponding relay connected to the manual side of the select switch. Equipped with a manual switch that changes the rotation direction of the motor by switching, and when the select switch is switched to manual control, the forward and backward position of the lumbar plate can be adjusted arbitrarily by controlling the motor with the manual switch, and it also switches to automatic control. A lumbar support control device that moves the lumbar plate forward and backward at a predetermined pressing cycle and under a pressing force by repeatedly driving the motor in the forward and reverse directions when the select switch is switched. . (4) A period adjusting means capable of arbitrarily adjusting the generation period of the rectangular pulse; and a duty ratio adjusting means capable of arbitrarily adjusting the pulse width of the rectangular pulse; The lumbar support control device according to claim 3, wherein the lumbar support control device is individually and steplessly adjustable. (5) The lumbar support control device according to claim 4, wherein the period adjustment means and the duty ratio adjustment means are both constituted by variable resistors.