JPH06270728A - Electric seat device - Google Patents

Abstract

PURPOSE:To regenerate preset condition without giving a feeling of physical disorder to the person seating on an electric seat device by providing a calculating means, which respond to the regenerative operation and calculates respective displacement quantities of the front end side and the rear end side of the seat surface up to respective ascending and descending positions called, and a drive means driving respective motors by the duty corresponding to the ratio of respective displacement quantities. CONSTITUTION:A control circuit 4 memorizes respective displacement positions inside a memory 20 in response to the recording operation of a recording/ regenerating switch 6. Thus displacement positions of each section of an electric seat body 10 responding to the figure and posture of the seated person is preset. As to motors 3a, 3b, the control circuit 4 calculates he displacement quantity from the respective present ascending and descending positions of a front end side 2a and a rear end side 2b of the seat 2 to the presetted ascending and descending positions and the pulse of the duty corresponding to the ratio of the calculated result is added to the motors 3a, 3b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, for example, in an automobile, presets up and down positions of at least the front end side and the rear end side of the seating surface, and responds to a reproducing operation to the preset positions. The present invention relates to an electric seat device that calls up and down positions to reproduce.

[0002]

2. Description of the Related Art In accordance with the body shape and posture of a seated person, the vertical movement positions of the front end side and the rear end side of the seat surface, the front and rear slide amount of the seat, the reclining angle of the backrest, etc. are stored in a memory. Japanese Patent Laid-Open No. 4-92730 is a typical example of a conventional electric seat device capable of recalling each of the stored up-and-down positions, slide amounts, reclining angles and the like by a switch operation.

[0003]

In the above prior art, when the difference between the ascending / descending position of the seat surface stored in the memory and the current ascending / descending position is different between the front end side and the rear end side, the side with the smaller displacement amount is used. Even if the displacement of is completed, the side with the larger displacement is displaced independently. Such a difference in the end timing during the reproducing operation does not give a feeling of discomfort to the seated person when the operation position is different, such as raising and lowering the seat surface and sliding back and forth, or raising and lowering the seat surface and reclining the backrest. Few. However, if the end timings of the front end side and the rear end side deviate from each other when the same seat surface is moved up and down, the seated person will feel uncomfortable.

An object of the present invention is to provide an electric seat device capable of reproducing a preset state without giving a seated person a feeling of strangeness.

[0005]

According to the present invention, at least the front end side and the rear end side of the seating surface can be displaced up and down by separate motors, and the ascending and descending positions corresponding to the body shape and posture of the seated person can be set. In an electric seat device capable of presetting, and in response to a reproducing operation, the driving means calling and reproducing each of the preset ascending / descending positions, in response to the reproducing operation, up to each called ascending / descending position A driving means for driving each of the motors with a duty corresponding to a ratio of the respective displacement amounts. It is an electric seat device.

[0006]

According to the present invention, the front end side and the rear end side of the seat surface can be displaced up and down by separate motors, and the front and rear slides of the seat and the reclining angle of the backrest can be displaced and driven by the motor. It is possible to perform presetting by storing the ascending / descending position and the displacement position corresponding to the body shape and posture of the seated person in the memory, and the driving means responds to the reproduction operation by the preset ascending / descending movements. A calculation unit is provided in an electric seat device capable of calling a position or a displacement position and driving the motor to reproduce the position.

In response to the reproduction operation, the calculating means calculates each displacement amount from the current position up to each of the ascending / descending positions of the front end side and the rear end side of the called seat surface. Further, the drive means compares the respective displacement amounts with each other, and obtains a ratio between the side having a large displacement amount and the side having a small displacement amount, which are determined by the comparison.

Using the ratio thus obtained, the driving means drives the respective motors for moving the front end side and the rear end side of the seating surface up and down with a duty corresponding to the above-mentioned ratio. . Therefore, the up and down displacements of the front end side and the rear end side are completed at substantially the same timing, and the seated person does not feel uncomfortable.

Further, it is possible to control the duty as necessary to intentionally make a difference in the displacement end timing between the front end side and the rear end side.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an electric seat device 1 according to an embodiment of the present invention.
It is a perspective view which shows the structure of. The electric seat apparatus 1 is generally configured to include an electric seat body 10 and an electric circuit 12.

The electric seat body 10 includes a backrest portion 7, a seat 11, motors 3a and 3b for driving the seat surface 2 of the seat 11 up and down, and lifting and lowering of the seat surface 2 displaced by the motors 3a and 3b. Sensors 13a and 13b for reading the position,
A motor 8 for sliding the electric seat body 10 back and forth;
It is composed of a sensor 13c for reading the amount of forward and backward sliding, a motor 9 for adjusting the reclining angle of the backrest portion 7, a sensor 13d for reading the reclining angle, and the like.

The motor 3a has an arrow A on the front end side 2a of the seat surface 2.
The motor 3b is driven to move up and down in the A1 and A2 directions, and the motor 3b
b is driven to move up and down in the directions of arrows B1 and B2. The ascending / descending positions of the front end side 2a and the rear end side 2b of the seat surface 2 are read by the sensors 13a and 13b. The motor 8
Drives the electric seat body 10 in the front and rear directions of arrows D1 and D2, and the sensor 13c reads the amount of front-back slide of the electric seat body 10. The motor 9 drives the backrest 7 in the directions of the arrows C1 and C2 to adjust the reclining angle. The sensor 13d reads the reclining angle of the backrest portion 7.

The electric circuit 12 is composed of a control circuit 4 realized by a microcomputer and the like, an analog / digital converter 14 and the like. A manual switch 5 and a recording / reproducing switch 6 are connected to the control circuit 4, and power is supplied from a battery 16 via an ignition switch 15 or directly.

Each of the sensors 13a to 13d is realized by a slide resistance or the like. In addition, these sensors 13a to 13d
May be realized by other means, and when realized by, for example, a pulse generator, an input interface circuit for performing waveform shaping is provided instead of the analog / digital converter 14.

The control circuit 4 drives the motors 3a, 3b, 8 and 9 in response to an input operation from the manual switch 5 in a state where the ignition switch 15 is turned on. The displacement position of each part of the electric seat body 10 displaced by the drive is read by the sensors 13a to 13d, and the analog value output thereof is the analog / digital converter 14.
Is converted into a digital value and input to the control circuit 4. Then, the control circuit 4 stores the respective displacement positions in the memory 20 in response to the recording operation of the recording / reproducing switch 6. In this way, the displacement position of each part of the electric seat body 10 corresponding to the body shape and posture of the seated person is preset.

On the other hand, the control circuit 4 reads the current displacement position of each part by the sensors 13a to 13d in response to the reproducing operation of the recording / reproducing switch 6. The control circuit 4 compares the read current displacement position with the preset displacement position, and when they are different from each other, the respective motors 3a, 3b, 8, 9 until the preset displacement position is reached. To drive. At this time, with respect to the motors 3a and 3b, the control circuit 4 calculates the amount of displacement from the current lift position of each of the front end side 2a and the rear end side 2b of the seat surface 2 to the preset lift position. , A pulse having a duty corresponding to the ratio of the calculation results is applied to the motors 3a and 3b.

FIG. 2 is a side view showing the state of the seat surface 2 of the electric seat body 10a at each of a plurality of lifting positions. The initial positions of the front end side 2a and the rear end side 2b of the seat surface 2 of the electric seat body 10 are set to 1I and 1J, respectively, and the current lifting position is set to 2
I and 2J, and the preset elevation position is 3
I and 3J.

In response to the reproducing operation of the recording / reproducing switch 6, the control circuit 4 controls the front end side 2a and the rear end side 2b.
Are read at the positions of 2I and 2J, respectively.

Next, the control circuit 4 obtains the difference between the preset ascending / descending positions 3I, 3J and the current ascending / descending positions 2I, 2J and sets it as the displacement amount. As shown in FIG. 3 (1), the displacement amount is 3I− on the front end side 2a.
2I and 3J-2J on the rear end side 2b as shown in FIG. 3 (2).

Subsequently, the control circuit 4 compares these displacement amounts, and calculates the ratio of the smaller displacement amount side and the larger displacement amount side. In response to the calculation result, the control circuit 4 applies a pulse of a reference duty, for example, 100% duty, to the motor having a large displacement amount, and the motor having a small displacement amount has the reference duty to the reference duty. Add a pulse of duty multiplied by the ratio.

That is, as shown in FIGS. 3 (1) and 3 (2), assuming that the displacement amount on the rear end side 2b is almost twice the displacement amount on the front end side 2a, it is shown in FIG. 4 (2). As shown in FIG. 4 (1), the motor 3b driving the rear end side 2b is provided with a pulse having a reference duty, and the motor 3a driving the front end side 2a is provided with a pulse having a duty of 1/2 of the reference duty. Add.

FIG. 5 is a flow chart showing the control operation of the control circuit 4 of the electric seat apparatus 1. Explaining the case where the seat surface 2 is displaced up and down as shown in FIG. 2,
In step n1, monitor the state of the recording / reproducing switch 6,
In response to the pressing of the reproduction switch, the process proceeds to step n2. In step n2, the current ascending / descending position 2I on the front end side 2a of the seat surface 2 is read, the preset position 3I is called from the memory 20, and the displacement amount 3I-2I is calculated. Next, the process proceeds to step n3 to read the current ascending / descending position 2J on the rear end side 2b of the seat surface 2 as in the case of the front end side 2a, call the preset position 3J, and calculate the displacement amount 3J-2J. Then, the process proceeds to step n4, where each motor 3
Each duty for driving a and 3b is calculated.

After the duty is calculated, the process proceeds to step n5 to read the current elevating position 2I on the front end side 2a of the current seat surface 2 from the sensor 13a and determine whether or not it matches the preset position 3I. To do. If not, the process proceeds to step n6 to drive the motor 3a, and then proceeds to step n8. If so, step n7
And the driving of the motor 3a is stopped, and step n8
Move to.

In step n8, similarly to the case of the front end side 2a, the current elevating position 2J of the rear end side 2b of the current seat surface 2 is read from the sensor 13b, and is it coincident with the preset position 3J? Determine whether or not. If not, the process proceeds to step n9, drives the motor 3b, and returns to step n4. If so, step n10
, The driving of the motor 3b is stopped, and step n1
Move to 1.

At step n11, the front end side 2a is again turned on.
The current ascending / descending position 2I is read and it is determined whether or not it is the preset position 3I. If so, the control circuit 4 ends the operation, and if not, the process returns to step n4 again. Thus, the front end side 2a and the rear end side 2b of the seat surface 2 are
Until the preset positions 3I and 3J are reached, the above-mentioned operations of steps n4 to n11 are repeated.

FIG. 6 is a flow chart showing the control operation of another embodiment of the present invention. This embodiment is similar to the above-mentioned embodiment, and the corresponding portions bear the same reference numerals. The control circuit 4 drives the motors 3a and 3b to move the seat surface 2 up and down by going through the steps n1, n2, n3, n4, n6 and n9. After the lifting / lowering displacement, the process proceeds to step n12, and the current lifting positions 2I and 2J on the front end side 2a and the rear end side 2b of the seat surface 2 are preset positions 3 respectively.
It is determined whether or not they match I and 3J. When the preset positions 3I and 3J have not been reached, the process returns to step n2.

As described above, the current positions 2I and 2J are sequentially detected, and the duty corresponding to the displacement amount up to the preset positions 3I and 3J is obtained, whereby the displacement end timings can be more accurately matched.

As described above, according to the present invention, in the electric seat apparatus 1 in which the front end side 2a and the rear end side 2b of the seat surface 2 are displaced up and down by the motors 3a, 3b, respectively, the control circuit 4 controls the seat surface 2 Preset elevation positions 3I, 3J
And the current elevation positions 2I and 2J, the respective displacement amounts of the front end side 2a and the rear end side 2b are obtained, and the motors 3a for driving the front end side 2a and the rear end side 2b to move up and down respectively.
The duty of the pulse applied to 3b is calculated so as to correspond to the ratio of the two displacement amounts, and the up and down displacement drive of the seat surface 2 is performed by the pulse.

Therefore, the front end side 2a and the rear end side 2b of the seat surface 2 reach the preset positions 3I and 3J, respectively, without any time difference. In this way, the electric seat apparatus 1 can change the state of the electric seat body 10 more comfortably according to the body shape and posture of the seated person without giving the seated person a feeling of strangeness.

It is also possible to change the duty by intentionally setting the control circuit 4 so that the displacement time between the front end side 2a and the rear end side 2b of the seat surface 2 is intentionally made different.

[0031]

As described above, according to the present invention, at least the front end side and the rear end side of the seating surface can be displaced up and down by separate motors, and the vertically displaced front end side and rear end side can be displaced. In the electric seat device capable of presetting the raising / lowering position individually and reproducing the individual raising / lowering positions in response to the reproducing operation, the displacement amounts of the front end side and the rear end side of the seat surface to the preset positions respectively. From the displacement amount, the duty applied to the motors driving the front end side and the rear end side is calculated so as to correspond to the ratio of the respective displacement amounts.

Therefore, the front end side and the rear end side of the seat surface are
The respective preset positions are reached without any time difference. By performing such an up-and-down displacement, the electric seat apparatus can change the state of the electric seat body according to the body shape and posture of the seated person without giving the seated person a feeling of discomfort.

Further, the duty can be changed so that the displacement time between the front end side and the rear end side can be intentionally made different.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of an electric seat apparatus 1 according to an embodiment of the present invention.

FIG. 2 is a side view showing a state of the seat surface 2 of the electric seat body 10 at a plurality of up and down positions.

3 is a displacement amount on the front end side 2a and a rear end side 2a in FIG.
It is a figure which compares with the amount of displacement of b.

FIG. 4 is a diagram showing the duty of pulses applied to the motors 3a and 3b when the up-and-down displacement drive in FIG. 2 is performed.

FIG. 5 is a flowchart showing an example of a control operation of a control circuit 4 of the electric seat apparatus 1.

FIG. 6 is a flowchart showing a control operation of another embodiment of the present invention.

[Explanation of symbols]

 1 Electric Seat Device 2 Seat Surface 3a, 3b, 8, 9 Motor 4 Control Circuit 6 Recording / Playback Switch 7 Backrest 10 Electric Seat Main Body 11 Seats 13a-13d Sensor 20 Memory

Claims (1)

[Claims] 1. At least a front end side and a rear end side of a seat surface can be displaced up and down by individual motors, and each ascending / descending position corresponding to a seated person's body shape and posture is preset for playback operation. In response to the reproduction operation, in response to the reproduction operation, in the electric seat device in which the driving means can call and reproduce each preset rising / lowering position, and the front end side of the seat surface to each called up / down position. An electric seat device, characterized in that calculation means for calculating each displacement amount with respect to the rear end side is provided, and the drive means drives each motor with a duty corresponding to a ratio of each displacement amount.