JPH0643173B2 - Position adjustment device for vehicle seat - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a vehicle seat position adjusting device that moves a rear seat divided into two left and right parts in a front-rear direction of a vehicle body by a drive unit. .

[Prior Art] Conventionally, in a vehicle seat position adjusting device, a rear seat is divided into a plurality of seats, and each of the divided seats is separately moved in the front-rear direction by a drive machine controlled by the operation of a manually controlled switch. (See JP-A-59-130746 and JP-A-59-130747).

However, in the conventional vehicle seat position adjusting device, when only one of the split seats is seated, only that split seat moves independently back and forth, and the position with respect to the other split seats is displaced, so that it looks unpleasant and gives a sense of discomfort. It had a drawback.

For this reason, for example, as shown in Japanese Patent Laid-Open No. 59-130747, the rear seat of the vehicle is divided into two in the left-right direction, and a motor and a manual switch are provided so that each divided seat can be individually moved back and forth. In addition, with a changeover switch, a circuit is provided for moving one of the left and right split seats as a reference and moving the other split seat so that the split seats match that position. , Already proposed.

[Problems to be Solved by the Invention]

However, in the conventional front / rear adjusting device for the rear seat of the vehicle, which has the structure shown in Japanese Patent Laid-Open No. 59-130747,
The occupants can individually move the split seats back and forth by operating the manual switch, and the adjacent split seats can also be interlocked by operating the changeover switch.However, for example, the occupant dismounts with his / her seat forward displaced. In such a case, the split seat must be moved backward to a position where it is easy to ride for the next passenger, which is very difficult to use.

The present invention has been made to solve the above problems, and it is possible to move both split seats as rear seats back and forth individually and integrally, and to arbitrarily determine a favorite position. (EN) A vehicle seat position adjusting device capable of eliminating a deterioration in appearance and a feeling of discomfort due to a seat shift and automatically securing a space where a next passenger can easily get in after getting off the vehicle. Is intended.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, a position adjusting device for a vehicle seat according to the present invention is such that a rear seat is divided into two in the left-right direction of a vehicle body, and both left and right divided seats are movable in the front-rear direction of the vehicle body. A drive machine that is supported and moves both split seats separately, a control switch that is manually operated to control the drive machine, a seating detector that is provided in each of the split seats to detect seating, and the control switch In a position adjusting device for a vehicle seat, comprising a control circuit that determines a driving state of a drive unit for both split seats based on a signal and a signal from the seating detector, the control circuit detects non-detection from both seating detectors. It is provided with a timer which operates upon receiving a signal and generates a return signal after a predetermined time has passed, and a return circuit which receives the return signal and drives the driving machine to return both split seats to the reference position.

[Action]

According to the present invention, by manually operating the control switch by the occupant, each of the divided seats is separately seated in the case of seating in both split seats, or both seats are seated in the case where only one seat is seated. It is possible to move them together in the front-back direction. In addition, when a predetermined time has passed after the passenger disembarked, both split seats can be automatically returned to the reverse end (reference position), so when the passenger disembarks, both split seats will be divided into two. It is possible to secure a sufficient space so that the passengers can easily get on the next boarding after getting off the vehicle without the trouble of moving the seat backward to a position where it is easy to get on.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of the present invention. In the figure, the rear seats are two left and right 4-split seats a and 6-split seats b.
The seats a and b are divided into seats a and b1 and seat cushions a2 and b2, respectively.

Further, metal back frames c and cushion frames d are provided on the back surfaces of the seat backs a1 and b1 and the seat cushions a2 and b2, respectively, to support the seat backs a1 and b1 and the seat cushions a2 and b2, respectively. is doing.

Further, an armrest f that can be stored in the direction of arrow e is pivotally supported at a point g on the seat back b1 of the six-divided seat b, and this armrest f has a control box i for controlling the drive machine m. A control switch j is provided, and the control switch j is switched to three stages of forward, backward and stop by manual operation.

A seating detector 11 is installed at the center of each seat cushion a2, b2, and the control box i
A seating detection signal and a non-seating detection signal are sent to the.

The cushion frame d has two rails k1 and k2.
It is supported by the rail supporting frame h via the, and its 6-divided side is shown in the divided perspective view of FIG. As shown in FIG. 2, the cushion frame d is fixed to the first rail k1 by the bolt n1.
The second rail k2 corresponding to 1 is supported by the rail supporting frame h by bolts n2. The first and second rails k1 and k2 are filled with green between them and are slidable in the direction of arrow o.

Further, the drive machine m includes a motor m1, a gear box m2,
A worm gear m3 and a gear bearing m4. The motor m1 and the gear box m2 are fixed to the cushion frame d by a bolt n3, and the gear bearing m4 is screwed to the worm gear m3 and is rail-supported by the bolt n4. It is fixed to the frame h.

Here, when the motor m1 rotates, the worm gear m3 rotates via the gear box m2, and the distance between the gear bearing m4 and the gear box m2 that has received this rotation fluctuates. Therefore, the position of the cushion frame d with respect to the rail supporting frame h is adjusted. In addition, four-seat a (first
The drive mechanism in the figure) is similar to this.

Further, the rail supporting frame h is provided with a limit switch 12 while the cushion frame d shows the limit of the forward and backward movement of the seat cushion b2 (Fig. 1) and the dog corresponding to the limit switch 12 is shown. p is provided. The signal from the limit switch 12 is sent to the control box i (FIG. 1).

By the way, as shown in FIG. 1, the cushion frame d is tiltably connected to the back frame c via the first connecting mechanism q.
Via the second connecting mechanism r, as shown in FIG.
It is connected to a metallic sheet supporting frame s.

Here, the second connecting mechanism r is composed of a U-shaped portion r1 and an L-shaped portion r2, the U-shaped portion r1 is a seat supporting frame s, and the L-shaped portion r2 is a back frame c. It is fixed. The protrusion r4 of the L-shaped portion r2 is inserted into the groove r3 of the U-shaped portion r1. The U-shaped portion r1 and the L-shaped portion r2 are arranged in the direction of the arrow t. It can slide and rotate freely.

Further, the rail supporting frame h is fixed to a seat supporting frame s fixed to a body floor (not shown) with bolts n5.

Therefore, as described above, when the drive machine m operates and the seat cushions a2, b2 move back and forth, the seat backs a1, b1 follow the seat cushions a2, b2 as shown in FIG. The inclination of the seat backs a1 and b1 changes.

By the way, the control switch j and the seating detector l shown in FIG.
1, the driving machine m, the limit switch 12 (FIG. 2) and the like are electrically connected to the control box i, and the control box i, the control switch j, the seating detector l1, the driving machine m, the limit switch 12 (see FIG. 2). Two
The control circuit is composed of (). This control circuit is shown in FIGS.

In FIG. 4, DC 12v is applied to each of the buses 1 and 2. This also applies to FIGS. 5 to 7.

The symbol enclosed by a circle in FIG. 4 and starting with a capital letter R indicates a relay coil, and the symbol starting with a capital letter S indicates a control switch j.
(Fig. 1), symbols starting with capital letter L are detection switches,
That is, the seating detector 11 (FIG. 1) and the limit switch 12 (FIG. 2) are shown. Further, 4 and 6 in each symbol represent the 4th division side and the 6th division side, respectively, and F and B.
Indicates the forward side and the reverse side, respectively.

Reference numeral 3 in FIG. 4 is a detection circuit included in the control circuit, which includes a drive command detection circuit 3a, a front-back end detection circuit 3b, and a direct seat detection circuit 3c.

In FIG. 5, symbols starting with a small letter r indicate relay contacts and correspond to respective relay coils (see FIG. 4) having the same symbol starting with a capital letter R. Also, among these relay contacts, those with diagonal lines are normally closed contacts, and those without diagonal lines are normally open contacts.

The forward / reverse switching circuit 4 of FIG. 5 is composed of a 4-division forward circuit 4a, a 4-division reverse circuit 4b, a 6-division forward circuit 4c, and a 6-division reverse circuit 4d, and each of the circuits 4a-4d is one of the division seats a or When only b (FIG. 1) is seated, a control switch j (FIG. 1) on the seating side moves the split seat a or b (FIG. 1) on the seating side, and a first switch circuit 4x A second switch circuit for moving the non-seated side divided seats b or a (Fig. 1) by the seated side control switch j (Fig. 1) when only the divided seats a or b (Fig. 1) are seated. 4y and the control switch j (Fig. 1) is O regardless of seating.
And a third switch circuit 4z for moving the divided seat a or b (FIG. 1) on the N-side.

Here, each forward circuit 4a, 4c and each backward circuit 4b, 4d
And are selectively energized. For example, when the four-division forward circuit 4a is energized, the cutoff relay coil RC4
Since F is energized, the breaking contact rc4F of the four-division reverse circuit 4b is turned off, and the four-division reverse circuit 4b is not energized. The same applies to the 6-division forward circuit 4c and the 6-division backward circuit 4d.

In FIG. 6, reference numeral 5 denotes a recovery circuit, which is a circled T
1 is the relay coil RT after a predetermined time (0 to 60 seconds)
A timer for activating 1 is shown.

In FIG. 7, 6 shows a motor drive circuit. here,
Circled M1-4 and M1-6 are motors m1 (second
The figure shows the four-division side and the six-division side, respectively. Also,
These motors M1-4 and M1-6 have contact points rM4F and rM6F
Each of the divided seats a and b (FIG. 1) moves forward when the current is applied to the vehicle, and moves backward when the contacts rM4B and rM6B are powered.

In the control circuit as described above, the following (1) to (4)
In the case of, each operation will be described.

(1) Only one of the split seats a (Fig. 1) or b (Fig. 1) is seated.

For example, when only the four-division seat a (FIG. 1) is seated and the four-divisional forward switch is turned on, the seating detection circuit 3 of FIG.
The seating switch L4 of c turns on, and the seating relay coil R
L4 is energized, the 4-division forward switch of the drive command detection circuit 3a is turned on, and the movement command relay coil RS4F
If the four-divided seat a (FIG. 1) has not reached the forward end, the limit switch L4F is turned off and the limit relay coil RL4F is de-energized. As a result, in the 4-division forward circuit 4a of FIG.
The seating contacts rL4, rL6, the movement command contact rS4F, the forward end detection contact rL4F, and the shutoff contact rC4B of the switch circuit 4x are all turned on, and the motor relay coil RM4F is energized. At this time, the breaking relay coil RC4F is also energized, and as described above, the reverse circuit 4
The breaking contact rC4F of b is turned off to open the 4-division reverse circuit 4b, and the motor relay coil RM4B is not energized.

Thus, the motor contact rM4F on the line 7 in FIG. 7 is turned on.
Then, the motor contact rM4B is turned off, the line 7 is energized, and the motor M1-4 rotates in the forward direction to move the four-divided seat a (FIG. 1) forward.

At the same time, in the 6-divisional forward circuit 4c of FIG. 5, the second switch circuit 4y is energized. Since the forward end detection contact rL6F and the cut-off contact rC6B are ON, the motor relay coil RM6F is energized, and similarly to the above, the motor contact rM6F of FIG. 7 is turned ON and only the lines 9 and 9 are energized. , The motor M1-6 rotates in the forward direction, and the 6-seat b (FIG. 1) is also moved forward.

When each of the divided seats a and b (FIG. 1) reaches the forward end, the forward end detection contacts rL4F and rL6F are turned off, and the rL4F of the 4-division forward circuit 4a and the rL6F of the 6-division forward circuit 4c are energized. Each motor relay coil R opened
The M4F and RM6F are de-energized, and the motor M1- in FIG.
4, M1-6 stop and each split seat a, b (Fig. 1) stops.

In this way, when only the 4-split seat a (FIG. 1) is seated and the 4-split forward switch S4F is turned on, both split seats a, b
(Fig. 1) moves forward integrally and stops at the forward end.

Also, only the 4-split seat a (FIG. 1) is seated, and
When the split reverse drive switch S4B is turned on, both splits a and b (FIG. 1) move backward integrally and stop at the reverse end, as in the case of the forward movement.

Next, the passenger is seated only in the 6-division seat b (FIG. 1), and the 6-division forward drive switch S6F or the 6-division reverse drive switch S6 is seated.
The same applies when B is turned on, and both split seats a and b
(Fig. 1) move forward together and stop.

In this embodiment, the first switch circuit 4x and the second switch circuit 4x
Since the switch circuit 4y is connected to the switch circuit 4y by the line 4w, when only one of the split seats a or b (FIG. 1) is seated, not only the control switch on the seating side but also the control switch on the vacant seat Even if it is turned on, both split seats a and b (first
Figure) moves as a unit.

For example, when only the 6-division side is seated and only the 4-division forward side control switch is ON, in the 4-division forward circuit 4a of FIG. 5, the second switch circuit 4y is the 6-division forward circuit 4c, and the first switch circuit 4x. However, each is energized and both split seats a and b (FIG. 1) move forward integrally. The same applies to the case of reverse travel.

On the other hand, the first switch circuit 4x is provided on the line 4w.
When the control switch on the seating side is turned on, both the split seats a and b are not connected to the second switch circuit 4y.
(Fig. 1) moves as a unit and the control switch on the empty seat side is turned on.
When N, only the split seats a or b (FIG. 1) on the vacant side move independently.

(2) When sitting on both split seats a and b (Fig. 1).

In this case, the switch SF4 for 4-divisional forward movement of FIG.
N, the first and second switch circuits 4x and 4y in the four-division forward circuit 4a of FIG. 5 are both opened, but the movement command contact rS of the third switch circuit 4z.
4F is turned on. Here, when the four-divided seat a (FIG. 1) has not reached the forward end, the forward end detection contact rL4F is ON, and further, the blocking contact rC4B is ON. Therefore, the motor relay coil RM4F is energized, the motor M14 of FIG. 7 rotates in the forward direction, and the 4-division seat a (FIG. 1) moves forward.

On the other hand, in the 6-division forward circuit 4c, the seating detection contact rL6 of the second switch circuit 4y, the seating detection contact rL4 of the first switch circuit 4x, and the third switch circuit 4z.
Since all the movement command contacts rS6F are OFF, the motor relay coil RM6F is not energized.

In this way, when both split seats a and b (FIG. 1) are seated, when the 4th split side forward switch S4F (FIG. 4) is ON, 4
Only the split seat a (Fig. 1) moves forward independently and stops at the forward end.

Further, when the switch S6F (FIG. 4) for 6-divisional forward movement is turned on, similarly, only the 6-division seat b (FIG. 1) advances and stops at the forward end.

Next, when the four-division reverse drive switch S4B (FIG. 4) is turned on in both seats, the first and second switch circuits 4x and 4y of the four-division reverse drive circuit 4b are opened, but the third
Since the movement command contact rS4B of the switch circuit 4z is turned on, the motor relay coil RM4B is energized, and the four-divided seat a (FIG. 1) moves backward. On the other hand, since the seating detection contacts rL4, rL6 of FIG. 6 are OFF, the timer T1 is inactive and the timer relay coil RT1 is not energized. Therefore, the timer contact rT1 of the 6-division reverse drive circuit 4d of FIG.
Remains off.

Furthermore, the first and second switch circuits 4x and 4y of the 6-division reverse drive circuit 4d are also open, and the third
The movement command contact rS6B of the switch circuit 4z of
Since it is F, the motor relay coil RM6B is not energized. Therefore, the 6-divided seat b (Fig. 1) does not move backward.

Thus, when seated in both split seats a and b (Fig. 1), each split seat a and b (Fig. 1) moves forward and backward independently and stops at the forward and backward ends.

(3) When all passengers get off from one or both seats a and b (Fig. 1).

In FIG. 6, for example, both split seats a and b (FIG. 1)
Is not reaching the reverse end, the reverse end detection contact rL4
B and rL6B are in the ON state. Also, seating detection contact r
Since timers L1 and rL6 are inactive and turned on, timer T1
And the timer relay coil RT1 operates after a predetermined time (0 to 60 seconds).

In response to this, the timer contact rT1 of the return switch circuit 4t in the 4-division reverse drive circuit 4b of FIG. 5 is turned on. Since the reverse end detection contact rL4B and the cut-off contact rC4F are ON, the 4-division reverse circuit 4b is energized. Therefore, the 4-division forward circuit 4a is not energized. Similarly, the 6-division reverse drive circuit 4d is also energized and the 6-division forward circuit 4c is non-energized.

Each of the reverse circuits 4b and 4d includes a reverse end detection contact r.
The energized state is maintained until L4B and rL6B are turned off.

Thus, one or both split seats a and b (Fig. 1)
When all passengers disembark from, the split seats a and b (Fig. 1) that have not reached the reverse end move backward after a predetermined time (0 to 60 seconds) from that point, and stop at the reverse end as above. To do.

Further, even when the passenger gets off the vehicle with both split seats a or b moving forward, the next time he / she gets on the vehicle, both split seats a
Sufficient space can be secured because b and b have returned to the reverse end.

(4) Four-seat a (Fig. 1) or 6 during the automatic return
When seated in split seat b (Fig. 1).

For example, when seated on the quadrant seat a (FIG. 1) during the return, in the return circuit 5 of FIG.
Is turned off, and the timer relay coil RT1 is de-energized via the timer T1. for that reason. In FIG. 5, the timer relay contact point rT during energization in the return switch circuit 4t of the 4-division reverse drive circuit 4b and the 6-division reverse drive circuit 4d.
1 is turned off, so the split seats a and b are returning.
(Fig. 1) stops.

The same applies to the case of sitting in the six-divided seat b (FIG. 1).

Thus, if at least one of the split seats a or b (Fig. 1) is seated during the automatic return, the returning split seats a and b (Fig. 1) are stopped.

[Effects of the Invention] As described above, according to the present invention, when only one of the split seats is seated, both split seats are integrally moved in the front-rear direction to improve the appearance due to the displacement of the split seats. In addition to eliminating deterioration and discomfort, when seating in both split seats, each split seat can be moved back and forth separately to arbitrarily determine a position that suits the occupant's taste and physique. In addition, after the occupant has left the vehicle for a certain period of time, both split seats can be automatically returned to the rearward end (reference position), so that when the passenger disembarks, both split seats can be separated. It is possible to secure a sufficient space so that the passengers can easily get on the next boarding after getting off the vehicle without the trouble of rearwardly displacing the seat to a position where it is easy to get on.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG.
FIG. 1 is an exploded perspective view showing an essential part of FIG. 1, FIG. 3 is a sectional view showing an essential part of the present invention, FIG. 4 is a circuit diagram showing a detection circuit of a control circuit, and FIG. FIG. 6 is a circuit diagram showing a circuit, FIG. 6 is a circuit diagram showing a recovery circuit of a control circuit, and FIG. 7 is a circuit diagram showing a motor drive circuit of the control circuit. a, b ... split seats, i ... control switch, l1 ... seating detector, m ... driver, 4x ... first switch circuit,
4y ... second switch circuit, 4z ... third switch circuit, 5 ... recovery circuit.

Continuation of the front page (56) Reference JP-A-59-130747 (JP, A) Actually open 60-131432 (JP, U) Actually open 55-143761 (JP, U)

Claims (1)

[Claims] 1. A rear seat is divided into two in the left-right direction of the vehicle body,
Both the left and right split seats are movably supported in the front-rear direction of the vehicle body, a drive unit that moves the split seats separately, a control switch that is manually operated to control the drive unit, and each of the split seats. A vehicle seat position adjusting device provided with a seating detector provided for detecting seating, and a control circuit for determining a driving state of a drive unit for both split seats by a signal from the control switch and a signal from the seating detector. In the above, the control circuit operates in response to a non-detection signal from both seating detectors and generates a return signal after a lapse of a predetermined time, and a direction to return both split seats to the reference position upon receiving the return signal. A position adjusting device for a vehicle seat, comprising: a return circuit for driving a driving machine.