JPH017630Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a device that automatically adjusts the seat position of a vehicle seat with a one-touch operation.

[Prior art]

Conventional devices of this type store a desired seat position in a memory, and when necessary, by one-touching a playback switch, the current seat position can be restored to the seat position stored in the memory. It automatically adjusts to the desired position.

In this case, the seat positions that are memorized and reproduced are not limited, so a special seat position that is not taken during normal seating may be memorized, and in that case, that seat position can be reproduced. Sometimes the motor for adjusting the seat position may lock up. For example, the seat position with the seat back tilted to the maximum angle is memorized,
When reproducing this seat position, if the rear seat is moved forward, the seat back of the relevant seat will come into contact with a part of the rear seat,
Motor locks up.

[Purpose of invention]

In view of these conventional problems, the purpose of the present invention is to define and display the range of seat positions to be memorized and reproduced, thereby making it possible to memorize and reproduce seat positions that are not taken during normal seating. The goal is to prevent it from happening.

[Structure of the idea]

In order to achieve this purpose, the present invention defines a permissible range of possible seat positions, provides a limit switch to detect whether the seat position is within the permissible range, and displays an indicator on the battery via this limit switch. It is characterized by connecting.

[Effect of idea]

According to the present invention, a seat position that is not taken during normal seating, that is, a seat position that is outside the permissible range, is displayed by the display, so that the current seat position is suitable for memorization. It is possible to immediately determine whether or not the seat position is correct, and seat positions that may cause the seat position adjustment motor to lock during playback can be prevented from being stored. Therefore, it is possible to avoid storing and reproducing a seat position that is out of the permissible range and locking the motor.

〔Example〕

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

FIG. 1 shows an electric circuit of one embodiment, in which a control circuit 3 including a digital computer 31 drives and controls a first motor 9 and a second motor 10 to adjust the seat position. .

The computer 31 is a general-purpose microcomputer that has a CPU, ROM, and RAM configured in a one-chip LSI, and reads necessary information and performs predetermined processing according to a program stored in the ROM, as is well known. , and output signals to the relays 34-37. computer 31
The information read into manual switch 8,
Automatic adjustment switch 5, seat position sensor 2
There is a signal from

The manual switch 8 consists of movable contacts 81 and 86 and fixed contacts 82 to 85, and by bringing any movable contact into contact with any fixed contact, any one of the relays 34 to 37 is activated. The movable contacts 81 and 86 are grounded to conduct electricity, the relays 34 to 37 are connected to the battery 11 via the ignition switch 12, and the fixed contacts 82 to 85 and the relays 34 to 37 are connected to each other. ing. Further, signals from the fixed contacts 82 to 85 are input to the computer 31 via a buffer.

The automatic adjustment switch 5 includes a memory switch 51 and first to fourth switches 52 to 52 which are playback switches.
55, all of these switches are momentary type switches, one end of which is grounded via a limit switch 6, and the other end of which is connected to the computer 31 via a buffer.

The seat position sensor 2 includes a slide amount detection sensor 21 and a reclining amount detection sensor 2.
2, and the slide amount detection sensor 21 is the first
It is a Hall IC that generates on/off signals by a magnet (not shown) connected to the motor 9,
Since the first motor 9 moves the seat cushion 71 back and forth as shown in FIG. 2, the slide amount detection sensor 21 converts the amount of back and forth movement of the seat cushion 71 into an electrical signal, is supplied to the computer 31 via the buffer. In addition, the reclining amount detection sensor 22
is a hall that generates an on/off signal by a magnet (not shown) connected to the second motor 10.
Since the second motor 10 changes the angle of the seat back 72 with respect to the seat cushion 71, the reclining amount detection sensor 22 changes the angle of the seat cushion 72 of the seat back 72.
The angle relative to 1 is converted into an electrical signal, and this electrical signal is supplied to the computer 31 via a buffer.

When the relays 34 to 37 are energized by receiving an output signal from the computer 31 via the buffer or by receiving a signal from the manual switch 8, they switch the changeover switches 38 to 41 and switch the respective movable contacts as shown in FIG. Switch from the solid line position to the dashed line position. When the relay 34 is energized and the changeover switch 38 is switched, current from the battery 11 flows through the first motor 9 in the direction indicated by arrow R, and the seat is therefore moved rearward. Further, when the relay 35 is energized and the changeover switch 39 is switched, a current flows in the direction shown by the arrow F to the first motor 9, and the seat is moved forward. Furthermore, when the relay 36 is energized and the changeover switch 40 is switched, a current flows in the direction of arrow D to the second motor 10, and the seat back is moved so as to increase the angle of the seat back with respect to the seat cushion. Further, when the relay 37 is energized and the changeover switch 41 is switched, a current flows in the direction of arrow U to the second motor 10, and the seat bag is moved so that the angle of the seat bag with respect to the seat cushion becomes small.

Note that power is constantly supplied to the computer 31 by a power supply circuit 32 that is directly connected to the battery 11 without going through the ignition switch 12. This power supply circuit 32 is
Power is also supplied to the Hall IC of seat position sensor 2.

Further, as mentioned above, the limit switch 6 connected between the automatic adjustment switch 5 and the ground
detects whether the seat position is within a predetermined tolerance range, and uses two limit switches 61 and 62 connected in series to each other.
When the seat position is within the allowable range, both are on, but when the seat position is outside the allowable range, at least one of them is off. These limit switches 61,
62 is the shield bracket 7 in FIG.
8 and a limit switch 62 near the upper rail 75 of the seat track.The limit switch 61 is turned off when the angle of the seat back 72 with respect to the seat cushion 71 exceeds a set angle. , when the amount of forward movement of the seat cushion 71 exceeds a set amount, the switch is turned off.

A resistor 14 and a light emitting diode 13 are connected between the limit switch 6 and the ignition switch 12.
(indicator), and when the ignition switch 12 is on and both switches 61 and 62 of the limit switch 6 are on, the light emitting diode 13 operates to emit light. .

3 and 4 show the limit switch 61
FIG. 3 is a perspective view of FIGS. 2 and 4, and FIG. 4 is a sectional view taken along the - line in FIG. 3. In Figures 3 and 4, 7
3 is a seat track bracket, 74 is a lower rail of the seat track, 75 is an upper rail, the limit switch 61 is attached to the bracket 76 of the seat cushion 71 with screws, and the operating arm 611 of the limit switch 61 is attached to the bracket 76 of the seat cushion 71. , the seat cushion 71 moves forward (in the direction F in FIG. 3) together with the upper rail 75 and comes into contact with the seat track bracket 73,
Turn off the limit switch 61.

5 and 6 show the mounting state of the limit switch 62, and FIG.
The perspective view of the figure, FIG. 6, is the perspective view of FIG.
In FIGS. 2, 5 and 6, 77 is
cam plate 78 is shield bracket 7
9 is a shield plate; in FIG. 5, the shield plate 79 is not shown, and the sixth
In the figure, illustration of the shield bracket 78 is omitted. The limit switch 62 is screwed to the shield bracket 78, and the operating arm 621 of the limit switch 62 is activated when the seat back 72 tilts backward and the cam plate 7
7 rotates in the direction D in FIG. 5, it comes into contact with a protrusion 771 formed on the cam plate 77, turning off the limit switch 62.

Next, the action will be explained.

First, by arbitrarily operating the manual switch 8, the seat position can be arbitrarily adjusted. That is, the movable contact 8 of the manual switch 8
1 to the fixed contact 82 or 83,
When the relay 34 or 35 is energized and the seat can be moved backward or forward, and when the movable contact 86 is brought into contact with the fixed contact 84 or 85, the relay 36 or 37 is energized and the seat can be moved backward or forward. You can make the angle larger or smaller.

When adjusting the seat position to a desired state by operating the manual switch 8 in this way and storing this seat position, the memory switch 51 of the automatic adjustment switch 5 is turned on, and then, for example, the first switch is turned on. By turning on 52,
The seat position at this time can be stored in the memory location corresponding to the first switch 52. That is, the current count values of the counters that count the number of pulse signals from the slide amount detection sensor 21 and the reclining amount detection sensor 22 are stored as reference values. Here, the count value of the counter that counts the pulse signal of the slide amount detection sensor 21 represents the amount of back and forth movement of the seat, and the count value of the counter that counts the pulse signal of the recline amount detection sensor 22 represents the amount of movement of the seat relative to the seat cushion of the seat. represents an angle.

After that, operate the manual switch 8 again to select another seat position, and when you want to memorize this seat position, turn on the memory switch 51 of the automatic adjustment switch 5, and then, for example, select a second seat position. By turning on the switch 53, the current seat position can be stored in the memory location corresponding to the second switch 53, similarly to the first switch 52 described above.

In this way, a total of four seat positions can be stored in the memory by the first to fourth switches.

Next, when reproducing the memorized seat position, one of the first to fourth switches 52 to 55 of the automatic adjustment switch 5 corresponding to the seat position to be reproduced is turned on. The seat position stored in correspondence with the switch can be automatically reproduced.

The above-mentioned seat position storage and reproduction operations are accomplished by the execution of a program by the computer 31.

When the seat position is within the allowable range and both switches 61 and 62 of the limit switch 6 are on, the light emitting diode 13
is operated to emit light, and it is possible to display that the seat position at that time is within the permissible range.
On the other hand, when the light emitting diode 13 does not emit light, it can be known that the seat position is not within the permissible range.

Now, operate the manual switch 8 to move the seat cushion 71 forward by a relatively large amount, and as a result, the operating arm 611 of the limit switch 61
When the seat is in contact with the seat track bracket 73 and the limit switch 61 is turned off, the light emitting diode 13 does not emit light, indicating that this seat position cannot be memorized. Even if you try to turn on the memory switch 51, the connection to the ground side of the automatic adjustment switch 5 is cut off.
No signal can be supplied to the computer 31, and the seat position cannot be stored. Since no memorization takes place, no replay takes place.

Similarly, when the manual switch 8 is operated to tilt the seatback relatively far back, the operating arm 621 of the limit switch 62 comes into contact with the protrusion 771 of the cam plate 77, turning off the limit switch 62 and emitting light. It can be seen that the diode 13 does not emit light and this seat position cannot be memorized, but even if the memory switch 51 is turned on in an attempt to memorize the seat position, the ground side of the automatic adjustment switch 5 Since the connection is cut off, no signal can be supplied to the computer 31, and the seat position at this time cannot be stored.

In this way, the light emitting diode 13 is activated to emit light when the seat position is within a predetermined range, and the seat position can be memorized and reproduced freely, so that even if the driver changes If you want to change your driving position to suit the driving environment, etc., you can easily replay a pre-memorized seat position with a one-touch operation. If the seat position exceeds the tolerance range, such as when the light emitting diode 9
3 is not emitted and its seat position cannot be stored, so it is possible to avoid the sheet from coming into contact with other sheets or objects during playback and locking the motor.

Although a specific embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and includes various embodiments within the scope of the claims for utility model registration. It is.

For example, the operating mode of the light emitting diode may be such that the light emitting diode is activated when the seat position is not within an acceptable range.

Also, the limit switch does not need to be connected to an automatic adjustment switch.

[Brief explanation of the drawing]

Fig. 1 is an electric circuit diagram of an embodiment of the present invention, Fig. 2 is a perspective view showing a seat of an embodiment of the invention, Fig. 3 is a perspective view of Fig. 2, and Fig. 4 is a perspective view of a sheet of an embodiment of the invention. , 3rd
5 is a perspective view of FIG. 2, and FIG. 6 is a perspective view of FIG. 5. 2... Seat position sensor, 3... Control circuit, 5... Automatic adjustment switch, 51... Memory switch, 52-55... 1st to 4th switches (playback switch), 6... Limit switch, 7... ... Seat, 71 ... Seat cushion, 72 ... Seat bag, 8 ... Manual switch, 9, 10 ... Motor, 13 ... Light emitting diode (indicator).

Claims (1)

[Claims for Utility Model Registration] By detecting the seat position based on a signal from a seat position sensor and operating a memory switch at the desired seat position,
The seat position of the vehicle seat is memorized, and when the playback switch is operated, the seat position is changed so that the current seat position matches the memorized seat position. This is an automatic seat adjustment device that determines the allowable range of possible seat positions.
1. An automatic seat position adjustment device for a vehicle seat, characterized in that a limit switch is provided to detect whether the seat position is within a permissible range, and a display is connected to a battery via the limit switch.