JPH05258B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to an interlock mechanism for a seat installed in a one-box car or the like. [Background of the Invention] A one-box car has a driver seat and a passenger seat in the front, and a rear seat in the rear.Recently, the seats have been rotated in various directions or seated opposite each other to change the seating arrangement. There is a growing trend towards allowing various changes to be made according to the user's preferences. However, from the standpoint of safety and security standards, it is not desirable to have the front passenger seat facing each other or to rotate the rear seat 90 degrees so that it faces sideways while the vehicle is in motion. Therefore, it is necessary to lock the front passenger seat so that it cannot be seated opposite the passenger seat while the vehicle is in motion, and the rear seat cannot be turned sideways. [Prior Art] Conventionally, the driver's seat is rotatable, and a rotation detection means is provided on the driver's seat, and when the driver's seat is rotated to face rearward, the rotation mechanism of the passenger seat is unlocked and the passenger seat is rotated. An interlock mechanism has been proposed that allows the two to sit facing each other (Japanese Patent Application Laid-Open No. 59-227528). In the above-mentioned interlock mechanism, when the driver's seat is turned rearward, the vehicle becomes unable to drive, that is, the vehicle becomes unable to travel, and only in this state can the front passenger seat be seated. [Problem to be solved by the invention] However, in the above conventional configuration, in order to release the interlock mechanism, it is necessary to remove the driver's seat.
It must be rotated 180 degrees, and the driver's seat must be able to slide far enough to the rear so that it does not interfere with driving equipment such as the steering wheel and brakes, and the backrest can be completely folded forward. There was a problem in that the structure of the driver's seat became complicated because the driver's seat had to be configured to be [Means for Solving the Problems] As a means for solving the above conventional problems, the present invention provides a driver seat 2 and a passenger seat 3 installed at the front of an automobile 1, and a rear seat 4 installed at the rear. In the seat arrangement, the backrest 2B of the driver's seat 2 can be tilted forward, the passenger seat 3 can be seated facing each other, and the rear seat 4 can be rotated so that it can face sideways, and the backrest 2B of the driver's seat 2 can be tilted forward. A locking means and a lock release switch 13 that is linked to the forward tilt of the backrest portion 2B are installed, a locking means of the counter seat mechanism and a seat switch 18 that is linked to the seat mechanism are installed for the passenger seat 3, and a lock for the rear seat 4 to be used horizontally. The lock release switch 13 linked to the forward tilting of the backrest portion 2B of the driver's seat 2 is associated with the locking means of the seating mechanism of the passenger seat 3 and the sideways use locking means of the rear seat 4, and The seat facing switch 18 of the front passenger seat 3 is associated with the forward tilting locking means of the driver's seat 2, and when the driver's seat 2 is in use, the lock release switch is OFF, and when the front passenger seat 3 is in the forward facing position, the lock release switch is turned OFF. The seat switch 18 is turned OFF, and when the backrest 2B is tilted forward, the lock release switch 13 is turned ON and each of the locking means is released, and when the front passenger seat 3 is placed in the seat position, the seat switch 18 is turned OFF.
This invention provides a seat interlock mechanism characterized in that when the driver's seat 2 is turned ON, the forward tilting state of the driver's seat 2 is locked by a forward tilting locking means. [Function] The function of the present invention based on the above configuration is as follows. When the driver's seat 2 is in use, the lock release switch 13 is turned off, and when the front passenger seat 3 is in the forward-facing position, the seat switch 18 is turned off. When the backrest portion 2B of the driver's seat 2 is tilted forward, the lock release switch 13 that is linked to the forward tilting of the backrest portion 2B is turned ON, and the locking means for the seating mechanism of the passenger seat 3 and the sideways use locking means for the rear seat 4 are released. The front passenger seat 3 can be seated facing each other, and the rear seat 4 can be rotated to be used horizontally. When the front passenger seat 3 is placed in the facing position, the facing switch 18 is turned on and the forward tilting state of the backrest portion 2B of the driver's seat 2 is locked by the forward tilting locking means. [Effects of the Invention] Therefore, in the present invention, when the backrest of the driver's seat is tilted forward, there is no risk of interference with the driving device, etc., and there is no need to provide the driver's seat with interference prevention means. Only when the backrest of the driver's seat is tilted forward and the driver is unable to sit in the driver's seat, that is, when the driver is unable to drive or is unable to drive, can the front passenger seat be seated opposite the driver, and the rear seat can be turned sideways. Further, when the front passenger seat is placed in a seated position, the forward tilting state of the backrest of the driver's seat is locked and the driver's seat is maintained in an undriveable state, thus ensuring safe driving of the vehicle. [Embodiment] The present invention will be explained with reference to an embodiment shown in FIGS. 1 to 18. In FIG. A bench-type rear seat 4 is installed. And each seat 2, 3, 4 has a seat part 2A,
It consists of 3A, 4A and backrest parts 2B, 3B, 4B. Details of the driver's seat 2 are shown in FIGS. 2 to 6. In the driver's seat 2, a base frame 5 is attached to the rear side of the seat portion 2A, and an upper frame 6 supporting both sides of the backrest portion 2B is pivotally attached to the base frame 5 via a shaft 6A. The lower edge of the upper frame 6 has locking teeth 6B.
is formed on the upper edge of the locking tooth 6B, and the locking piece 7 is pivotally connected to the base frame 5 via the shaft 7A and is biased in the direction of arrow A by a spring (not shown). The locking teeth 7B are in mesh with each other. The distal end of the locking piece 7 is in contact with the proximal end of a lever 8 which is pivotally attached to the base frame 5 via a shaft 8A (see FIG. 3). An actuating piece 9 is attached to the front side of the lower end of the upper frame 6, and a locking groove 9A is formed at the rear of the lower edge of the actuating piece 9, and a projecting piece 9B is formed at the front part. A pin 10B protruding from the tip of a locking rod 10 rotatably attached to the base frame 5 via a shaft 10A is engageable, and a motor 11 is attached to the lower end of the locking rod 10. From operation wire 11
A will contact you. Further, the tip of an operating rod 12 rotatably attached to the base frame 5 via a shaft 12A can come into contact with the projecting piece 9B of the operating piece 9, and the lower end of the operating rod 12 has a lock release button. An operating wire 13A communicates from the switch 13. In the above configuration, the state shown in FIG. 4 is the normal usable state of the driver's seat 2, and in this state, the operating rod 12 is in the upright state and the lock release switch 1 is in the upright state.
3 is turned off. From this state, lever 8
When the locking piece 7 is rotated downward by pulling up, the engagement between the locking teeth 7B of the locking piece 7 and the locking teeth 6B of the upper frame 6 is released, and the upper frame 6 can be rotated. 2B can be tilted forward as shown in FIG. When the backrest portion 2B tilts forward, the pin 10B of the locking rod 10 is inserted into the locking groove 9A of the actuating piece 9 of the upper frame 6.
are engaged to prevent the backrest portion 2B from returning to the normal state shown in FIG.
Turn on the lock release switch 13 via 3A. Details of the passenger seat 3 are shown in FIGS. 7 to 11. In the passenger seat 3, a penetration part 3D is formed in the center of the backrest part 3B, and an auxiliary seat part 3C is fitted into the penetration part 3D, and the lower edge thereof is formed in the penetration part 3D.
It is hinged at the bottom edge. Then, in order to put the passenger seat 3 in a facing state, the auxiliary seat part 3C is inserted from the perforation part 3D.
as shown in FIG. 8, and the backrest portion 3B is tilted forward. The locking means for the auxiliary seat 3C is shown in FIGS. 9-11. In the figure, 1
Reference numeral 4 designates a locking plate 14 that is attached so as to be retractable from the upper edge of the auxiliary seat portion 3C.A lever 14A is attached to the locking plate 14, and the locking plate 14 is moved vertically by the lever 14A. Forced to slide. The lower edge of the locking plate 14 comes into contact with the upper edge of a presser plate 15, and the presser plate 15 is slid up and down by a motor 16 via a connecting rod 16A. 17 is the backrest part 3B
This is a locking hole formed in the upper edge of the through-hole 3D, and the locking hole 17 has a locking plate 14 of the auxiliary seat 3C.
The locking plate 14 can be engaged with the upper edge of the locking plate 14, and a counter-seat switch 18 to be brought into contact with the upper edge is housed therein. In the above configuration, in the state shown in FIG. 9, the locking plate 14 of the auxiliary seat portion 3C is engaged with the locking hole 17 of the backrest portion 3B, and the auxiliary seat portion 3C cannot be pulled back. Since the upper edge of the presser plate 15 is in contact with the lower edge of the locking plate 14, it is impossible to slide the locking plate 14 downward via the lever 14A, and it is impossible to seat the locking plate 14. In this state, the counter switch 18 is pushed by the locking plate 14 and turned OFF. When the motor 16 operates and slides the holding plate 15 downward via the connecting rod 16A, the locking plate 1
There is a gap between the locking plate 1 and the holding plate 15.
4 can be slid downward by the lever 14A (see Fig. 10), and when the locking plate 14 is slid downward and released from the locking hole 17 of the backrest portion 3B, the auxiliary The seat portion 3C can be pulled back. At the same time, the locking plate 14 is released from the counter switch 18 and the counter switch 18 is released.
turns ON (see Figure 11). Details of the rear seat 4 are shown in FIGS. 12 to 17. In the rear seat 4, a base frame 19 is attached to the rear side of the seat portion 4A, and an upper frame 20 supporting both sides of the backrest portion 4B is attached to the base frame 19.
0A, and locking teeth 20B are formed on the lower edge of the upper frame 20.
0B is engaged with locking teeth 21B formed on the upper edge of a locking piece 21 which is pivotally connected to the base frame 19 via a shaft 21A and is biased in the direction of arrow B by a spring (not shown). There is. The distal end of the locking piece 21 is in contact with the proximal end of a lever 22 that is pivotally connected to the base frame 19 via the shaft 22A (first
(See Figure 3). An actuating piece 23 is attached to the front side of the lower end of the upper frame 20, a locking step 23A is formed at the rear of the lower edge of the actuating piece 23, and a projecting piece 23B is formed at the front part.
A tip of a locking rod 24 rotatably attached to the base frame 19 via a shaft 24A can be engaged with the locking step 23A, and a motor 25 is connected to the lower end of the locking rod 24. An operating wire 25A communicates with the terminal. In addition, the protruding piece 23B of the actuating piece 23 has a shaft 26A attached to the base frame 19.
The operating rod 26 is rotatably attached via the
The lower end of the operating rod 26 is connected to an operating wire 27A from a forward tilting switch 27. In the above configuration, the state shown in FIG. 13 is the state in which the rear seat 4 is used, and in this state, the operating rod
6 is in a standing state and the forward tilt switch 27 is turned OFF. When the lever 22 is pulled up from this state and the locking piece 21 is rotated downward, the engagement between the locking tooth 21B of the locking piece 21 and the locking tooth 20B of the upper frame 20 is released, and the upper frame 20 is rotated. This makes it possible to tilt the backrest portion 4B forward as shown in FIG. When the backrest portion 4B tilts forward, the upper frame 20
The tip of the locking rod 24 is engaged with the locking stage 23A of the actuation piece 23 to lock the backrest portion 4B so that it does not return to the operating state shown in FIG.
The protruding piece 23B pushes the operating rod 26 backward and turns on the forward tilt switch 27 via the operating wire 27A. The rear seat 4 is further installed on a rotating mechanism shown in FIGS. 16 and 17. In the figure, 2
8 is a lower frame, and 29 is an upper frame rotatably attached to the lower frame 28. That is, a raised portion 30 is formed from the periphery to the center of the lower frame 28,
A flange portion 29A is formed on the inner edge of the raised portion 30, and a support flange 3 is formed on the flange portion 29A.
1 is attached to form a gap 32 between the flange portion 29A and the support flange 31. On the other hand, upper frame 2
9 forms a recessed part 33 from the periphery to the center, and a fitting flange part 32 is formed on the inner edge of the recessed part 33.
A, and the fitting flange portion 32A is attached to the lower frame 28.
It is slidably fitted into the gap 32 of the gap 32 . In this way, the upper frame 29 is rotatably attached to the lower frame 28, and the rotary switch 34 is further attached to the upper frame 29 via the bracket 33A, and the lower frame 28 has a guide for the rotary switch 34. 35 is installed. In the above configuration, the rotation mechanism is attached to the backrest portion 4B.
is locked in the normal state, and is unlocked and becomes rotatable in the forward folded state, and when the rear seat 4 is in the normal state facing forward, the rotary switch 34 is in the solid line position in Fig. 17 and turned ON. When the rear seat 4 is rotated from this state by 30 to 150 degrees, the rotary switch 34 is pushed by the guide 35 and turned OFF as shown by the dotted line. The details of each seat have been explained above, and the interlock mechanism of each seat will be summarized below. 1 Driver's seat 2 Motor 11: Engagement and release of the lock for forward tilting of the backrest Lock release switch 13: Detection of forward tilting of the backrest, OFF in normal state, OFF in forward tilting state
ON. 2 Passenger seat 3 Motor 16: Engagement and release of the lock of the seating mechanism Seat switch 18: Detection of the seating position, OFF in normal state, ON in forward tilted state. 3 Rear seat 4 Motor 25: Engagement and release of the lock for forward tilting of the backrest. Forward folding switch 27: Detection of forward tilting of the backrest. OFF when in use, ON when tilted forward. Rotary switch 34: Detects the horizontal position of the backrest, turns ON in normal state, and OFF in horizontal state. The interlock circuit is shown in FIG. 18, and the interlock mechanism for each seat will be explained below. 1 Between the driver's seat and the passenger seat Under normal conditions, the backrest 2B of the driver's seat 2 is not tilted forward and the lock release switch 13 is
OFF, the front passenger seat 3 is in the normal state, the seat switch 18 is OFF, and the motor 16 engages the lock for the seat position, making it impossible to seat the passenger seat. When the backrest 2B of the driver's seat 2 is tilted forward from the normal state to make it unusable, that is, unable to drive, the lock release switch 13 is turned on, and therefore the switches 13A and 13B are in the position shown by the solid line. The motor 16 rotates forward and the counter mechanism is unlocked. Passenger seat 3
When the seat is set to be seated, the seat switch 18 is turned ON, and therefore the switches 18A and 18B are also turned ON as shown in the solid line position, and the motor 11 rotates in the opposite direction, causing the backrest 2B of the driver's seat 2 to tilt forward. The vehicle is locked, thus fixing the inoperable state. When the passenger seat 3 is returned to its normal state, the seat switch 18 is turned OFF, and therefore the switches 18A and 18B are in the position shown by the dotted line.
When turned off, the motor 11 rotates in the forward direction, and the forward tilted state of the backrest 2B of the driver's seat 2 is released, allowing the driver's seat 2 to return to its normal state, that is, to its usable state. When the driver's seat 2 is returned to its normal state, the lock release switch 13 is turned OFF, and therefore the switches 13A and 13B are turned OFF, the motor 16 rotates in the reverse direction, and the passenger seat 3 becomes unable to sit. 1 Between the driver's seat and the rear seat When the driver's seat 2 is in the normal state (the lock release switch 13 is OFF), the backrest 4 of the rear seat 4
When B is tilted forward, the forward tilt switch 27 is turned on, and therefore the switches 27A, 27B, 27
C and 27D turn ON as shown by the solid line, and the motor 25 rotates in the opposite direction to lock the backrest portion 4B in the forward-folded state, thus fixing the rear seat 4 in an unusable state. From this state, open rear seat 4.
Rotation switch 24 turns OFF when rotated more than 30°
Therefore, switches 34A, 34B,
34C and 34D are OFF as shown in the dotted line position
However, the backrest portion 4B is still locked in the forward tilted state and rendered unusable.
When the backrest 2B of the driver's seat 2 is tilted forward, the lock release switch 13 is turned on, and when the rear seat 4 is rotated by more than 30 degrees, the rotation switch 34 is turned off.
3A, 13B are ON, switches 34A, 34
B, 34C, 34D are turned off and motor 25
rotates in the forward direction, the forward folding state of the backrest portion 4B is unlocked, and the rear seat 4 can be returned to its normal state while remaining sideways. In this state, the forward tilt switch 27 is OFF, that is, the switches 27A, 2
7B, 27C, 27D as shown in the dotted line state
is turned OFF, and the rotary switch 34, that is, 34A,
34B, 34C, and 34D are in the OFF state, the motor 11 rotates in the opposite direction and the backrest portion 2B of the driver's seat 2
The forward leaning position of the head is locked. When the backrest portion 4B of the rear seat 4 is folded forward, the forward folding switch 27 is activated.
That is, switches 27A, 27B, 27C, 27D
is turned ON and the state is horizontal (rotary switch 34,
Switches 34A, 34B, 34C, 34D are
OFF), the motor 11 rotates in the forward direction, the forward tilting state of the backrest portion 2B of the driver's seat 2 is unlocked, and the driver's seat 2 can be returned to its normal state. When the driver's seat 2 is placed in the normal state, the lock release switch 13, that is, the switches 13A, 1
3B is turned OFF and the state is horizontal (rotary switches 34, 34A, 34B, 34C, 34D are
OFF), the motor 25 rotates in the opposite direction to lock the backrest portion 4B in the forward tilted state. However, when the rear seat 4 is faced forward in this state, the rotary switch 34, switches 34A, 34B, 34C,
34D is turned ON, the motor 25 rotates forward, and the lock of the backrest portion 4B in the forward tilted state is released. The relationship between the switch and motor is summarized below. Lock release switch 13 ON → Motor 16 forward rotation lock release switch 13 ON → Opposite seat switch 18
ON → Motor 11 Reverse rotation lock release switch 13 ON → Opposite seat switch 18
ON → Motor 11 forward rotation lock release switch 13 OFF → Motor 16 reverse rotation forward rotation switch 27 ON → Rotation switch 34 ON →
Motor 25 reverse rotation lock release switch 13 ON → rotation switch 34
OFF → Motor 25 forward rotation forward rotation switch 27 OFF → Rotation switch 34 OFF
→ Motor 11 reverse rotation forward switch 27 ON → Rotation switch 34 OFF →
Motor 11 forward rotation lock release switch 13 OFF → rotation switch 3
4 ON → Motor 25 reverse rotation Rotation switch 34 OFF → Motor 25 forward rotation The present invention is not limited to the above embodiments. For example, the lock engagement/release mechanism may be an electromagnetic type, a hydraulic type, etc., regardless of the motor. You can also do this. Further, as the lock release switch, counter switch, forward tilt switch, and rotary switch, a proximity switch, a photoelectric switch, etc. may be used in addition to a normal switch. Further, the front passenger seat seating mechanism may be a mechanism that allows the front passenger seat to face the front passenger seat by rotating it, and the rear seat sideways use locking mechanism may be of a type that locks the rotation of the rear seat itself.

[Brief explanation of the drawing]

Figures 1 to 18 show an embodiment of the present invention, in which Figure 1 is a seat arrangement diagram, Figure 2 is a perspective view of the driver's seat, and Figure 3 is a mounting mechanism between the seat and backrest. Fig. 4 is a side view with the actuating piece removed, Fig. 5 is a side view with the backrest tilted forward, and Fig. 6 is a side view with the backrest tilted forward in the unlocked state. , FIG. 7 is a perspective view of the passenger seat, FIG. 8 is a perspective view of the passenger seat in the seated state, FIG. 9 is a side sectional view of the backrest, FIG. 10 is a side sectional view of the backrest with the auxiliary seat locked, and FIG. 11 1 is a side sectional view of the backrest with the auxiliary seat pulled back.
Figure 2 is a perspective view of the rear seat, Figure 13 is a side view of the mounting mechanism between the seat and backrest with the operating piece removed, Figure 14 is a side view with the operating piece attached, and Figure 15 is the backrest tilted forward. 16 is a front sectional view of the rotating mechanism, FIG. 17 is an explanatory diagram showing the operation of a switch in the rotating mechanism, and FIG. 18 is a circuit diagram of the interlock mechanism. In the figure, 1...one box car, 2...driver seat, 3...passenger seat, 2A, 3A, 4A...seat section, 2B, 3B, 4B...backrest section, 3C...
Auxiliary seat, 3D...penetration part, 9...operating piece, 9A
...Latching groove, 9B...Protrusion piece, 10...Latching rod, 1
1... Motor, 12... Operating rod, 13... Lock release switch, 13A... Operating wire, 14...
Locking plate, 15... Pressing plate, 16... Motor, 16
A... Connection rod, 17... Locking hole, 18... Counter switch, 23... Operating piece, 23A... Locking stage, 2
3B... Projection piece, 24... Locking rod, 25... Motor, 25A... Operating wire, 26... Operating rod, 2
7...Forward switch, 28...Lower frame, 29...Upper frame, 34...Rotary switch, 35...Guide.

Claims (1)

[Claims] 1. In a seating arrangement consisting of a driver's seat and a passenger seat installed at the front of a motor vehicle and a rear seat installed at the rear, the backrest of the driver's seat can be tilted forward, the passenger seat can be seated facing each other, and the backrest of the driver's seat can be tilted forward. The seat can be rotated so that it can be turned sideways, and the driver's seat is equipped with a backrest locking means and a lock release switch that is linked to the forward tilting of the backrest, and the passenger seat is linked to the locking means of the seating mechanism and the seating function. A seat switch is installed, and a sideways use locking means is installed for the rear seat, a lock release switch that is linked to the forward tilt of the backrest of the driver's seat, a locking means for the passenger seat's seat mechanism, and a sideways use locking means for the rear seat. Furthermore, the front-facing switch of the front passenger seat is associated with the forward tilting locking means of the driver's seat, and when the driver's seat is in use, the lock release switch is OFF, and the front passenger seat is in the forward-facing position. In this case, the above-mentioned pair of seats switch is turned off,
When the backrest tilts forward, the lock release switch is turned ON and each of the locking means described above is released, and when the front passenger seat is placed in the facing position, the facing switch is turned ON and the driver's seat is tilted forward. A seat interlock mechanism, characterized in that the seat is locked by a tilting locking means.