JP3586357B2 - Variable direction seat - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a variable direction seat installed in vehicles such as railway vehicles, buses, passenger ships, and other places.
[0002]
[Prior art]
The applicant of the present application has proposed, in Japanese Patent Application Laid-Open No. 7-9900, a vehicular directional variable seat capable of rotating and unlocking a rotary seat frame with one motor. In this seat, a slip clutch is provided above the speed reducer of the motor, and the rotation of the motor is transmitted to the seat rotating shaft via the slip clutch, the drive gear and the driven gear, and the eccentric cam is located below the speed reducer. And a cam mechanism including a lever with a cam follower. The rotation of the motor is transmitted to the lock mechanism of the rotary seat frame via the cam mechanism and the wire.
[0003]
[Problems to be solved by the invention]
As described above, if the slip clutch is provided on the upper side of the motor speed reducer and the cam mechanism is provided on the lower side, the height of the rotating device / unlocking device is increased, so that it is large in the vertical direction. Mounting space is required. However, there is a case in which it is difficult to attach a large space below the seat in the vertical direction. In addition, since the rotating device and the unlocking device were attached to the lower part of the center of the fixed underframe, the rotating device and the unlocking device were clearly seen from the rear seat, and the appearance was poor.
[0004]
Therefore, an object of the present invention is to be able to rotate and unlock the rotary seat frame with one motor, not only to simplify the structure and reduce the cost, but also to reduce the speed with the motor. By integrating the machine and the output switching device in a substantially L-shape, the height and the width can be balanced to form a compact body, and can be easily arranged under a seat with limited space. It is an object of the present invention to provide a variable direction seat.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides a rotating seat frame to which a seat body is attached, a fixed underframe for rotatably supporting the rotating seat frame, and locking the rotating seat frame to the fixed underframe. In a variable direction seat having a lock mechanism, a motor rotating around a vertical axis, a speed reducer provided above the motor to reduce the rotation of the motor, and a speed reducer provided laterally to the speed reducer An output switching device that selectively switches and outputs the subsequent rotation to the first output shaft or the second output shaft and outputs the rotation is integrated and attached to a fixed frame, and outputs the rotation output to the first output shaft. wherein the first transmission device is provided to transmit the rotation seat frame for rotating the rotary seat frame, lock transmits the rotation that is outputted to the second output shaft to the locking mechanism is converted to a linear line motion mechanism and wherein the second transmission device to operate the actuation or release is provided That.
[0006]
Here, it is preferable that the motor, the speed reducer, and the output switching device are attached to one side of the fixed underframe.
[0007]
The output switching device is not limited to a specific structure, but a rotating member that performs rotation after deceleration, the first output shaft and the second output shaft disposed on both end surfaces of the rotating member, and the rotating member. And an engagement device that selectively engages the first output shaft or the second output shaft.
[0008]
The first transmission device is not limited to a specific structure, but may be one using a chain, a belt, a gear, or the like.
[0009]
The second transmission device is not limited to a specific structure, but may be a device using a wire, a screw, a gear, or the like.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment in which the present invention is embodied in a variable direction seat for a railway vehicle will be described below with reference to the drawings. As shown in FIGS. 1 to 4, a fixed underframe 2 is installed on a floor 1 of a railway vehicle, and a rotating shaft 10 is supported by a bearing 16 at an upper portion of a central portion of the fixed underframe 2. The rotating seat frame 3 is rotatably supported on the upper end of the shaft 10 via a mounting plate 11. The upper part of the fixed underframe 2 and the rotary seat frame 3 are each manufactured in a rectangular shape, and a seat body 5 having a reclining (or fixed) backrest 4 is mounted on the rotary seat frame 3. On the right side of the fixed underframe 2 and the rotary seat frame 3 in FIGS. 1, 3 and 4, a lock mechanism 7 for locking the rotary seat frame 3 to the fixed underframe 2 is provided.
[0011]
The lock mechanism 7 includes the following members 26 to 50. Guides 26 are fixed to the lower surfaces of both ends of the rotating seat frame 3, and projecting pieces 27 are formed on the inner surfaces thereof over the entire length. An inclined surface 28 and a convex portion 29 are provided at both ends of the projecting piece 27, and a locking portion 30 is cut out at the center of the projecting piece 27. Rollers 31 are provided at the four corners of the fixed underframe 2 so as to engage with the upper surface of the protruding piece 27, so that the rotatable seat frame 3 can be held horizontally when the rotatable seat frame 3 is stopped and at the beginning of rotation.
[0012]
As shown in FIG. 3, an L-shaped swing lever 36 is swingably supported in a vertical plane by a support shaft 35 on a bracket 34 fixed to the leg 2a of the fixed underframe 2 and has an upper end at the upper end thereof. An engaging member 37 that engages with the inclined surface 28, the convex portion 29, and the locking portion 30 of the protruding piece 27 is mounted on the shaft. A spring 40 is provided between the rod 38 penetrating the lower part of the swing lever 36 and the panel 39 fixed to the fixed underframe 2 to urge the engaging element 37 toward the locking portion 30.
[0013]
Below the swing lever 36, a foot pedal 42 is rotatably supported on the bracket 34 by a shaft 41, and an intermediate portion thereof is connected to the rod 38 of the swing lever 36 via a link 43. . When the foot pedal 42 is stepped down against the urging force of the spring 40 while the rotary seat frame 3 is stopped, the swing lever 36 is driven counterclockwise in FIG. 37 is disengaged from the locking portion 30. A long hole 44 into which the rod 38 is fitted is formed in the link 43, and the swing lever 36 and the foot pedal 42 are connected so as to be relatively movable in the length range of the long hole 44.
[0014]
The swing lever 36 is connected to an arm 92 described later via the wire 46. When the motor 13 is rotated clockwise while the rotary seat frame 3 is stopped, the wire 46 is pulled by the arm 92, the swing lever 36 swings counterclockwise in FIG. It is configured to be dissociated from the stop 30.
[0015]
An elongated hole 50 into which the pin 49 is fitted is formed in the joint fitting 48, and the swing lever 36 and the wire 46 are connected to be movable relative to each other within the length range of the elongated hole 50. Further, the swing lever 36 is connected to a reclining lock mechanism (not shown) of the backrest 4 via another wire 100, and before the rotation of the rotating seat frame 3, the locking mechanism is released to release the backrest 4. It is configured to be able to forcibly return from the reclining position.
[0016]
Next, as shown in FIGS. 5 to 7, a motor 13 that rotates around a vertical axis and an upper part of the motor 13 And a speed reducer 14 that reduces the rotation of the motor 13 and that is provided beside the speed reducer 14 and selectively outputs the reduced rotation to the first output shaft or the second output shaft. The output switching device 15 is integrally mounted as the output unit 6.
[0017]
The output unit 6 includes a flat, substantially rectangular parallelepiped case 12 having a height of about 50 mm, and is attached to the fixed underframe 2 in the case 12. A motor 13 is attached to the lower surface of the bottom part of the bottom plate 12 b of the case 12, and the upper end of a vertical motor shaft (first shaft) 51 enters the case 12.
[0018]
The speed reducer 14 includes the following members 52 to 68. Between the cover plate 12a and the bottom plate 12b of the case 12, a second shaft 52, a third shaft 53, a fourth shaft 54, and a support shaft (fifth shaft) 55 are respectively arranged in the bearing 16 from the back side to the front side. It is rotatably supported by. A first gear 61 having a small number of teeth is attached to the motor shaft 51. A second gear 62 having a large number of teeth and a third gear 63 having a small number of teeth are coaxially attached to the second shaft 52, and the first gear 61 and the second gear 62 are meshed. A fourth gear 64 having a large number of teeth and a fifth gear 65 having a small number of teeth are coaxially mounted on the third shaft 53, and the third gear 63 and the fourth gear 64 are engaged with each other. A sixth gear 66 having a large number of teeth and a seventh gear 67 having a small number of teeth are coaxially mounted on the fourth shaft 54, and the fifth gear 65 and the sixth gear 66 are meshed. An eighth gear 68 having a large number of teeth is attached to the rotating member 71 of the next output switching device 15, and the seventh gear 67 and the eighth gear 68 are meshed.
[0019]
The output switching device 15 includes the following members 69 to 86. At the center of the support shaft (fifth shaft) 55, a rotary member 71 is externally inserted via a sleeve 72 so as to be rotatable on the peripheral surface of the sleeve 72 and slidable up and down. A first cylindrical output shaft 73 is mounted above the support shaft 55, and a ninth gear 69 is mounted below the support shaft 55 so as to rotate together with the support shaft 55. Engagement pins 74 and 75 are protruded from the upper end surface and the lower end surface of the rotating member 71, and the engagement pins 74 and 75 can engage with the flange portion 76 and the ninth gear 69 of the first output shaft 73. Holes 77 and 78 are provided.
[0020]
Further, an annular groove 79 is provided on the outer periphery of the rotating member 71, and an electromagnetic solenoid 80 is attached to the lower surface of the front part of the bottom plate 12b. A central portion of a lever 82 is pivotally mounted on a support plate 81 fixed to the bottom plate 12b so as to be tiltable. One end of the lever 82 is divided into two forks and its end 83 is slidably engaged in an annular groove 79. The other end of the lever 82 is pivotally mounted on an operating member 84 of the electromagnetic solenoid 80. Then, as shown in FIG. 9, when the electromagnetic solenoid 80 is excited and the operating member 84 retreats and descends, the lever 82 pushes up the rotating member 71 and the engaging pin 74 engages with the engaging hole 77. The rotating member 71 and the first output shaft 73 are engaged. As shown in FIGS. 7 and 8, when the electromagnetic solenoid 80 is demagnetized and the operating member 84 protrudes and rises, the lever 82 pushes down the rotating member 71 and the engaging pin 75 engages with the engaging hole 78. Therefore, the rotating member 71 and the ninth gear 69 are engaged.
[0021]
A second output shaft 85 is rotatably supported by bearings 86 on the bottom plate 12b on the front side of the support shaft 55, and a tenth gear 70 is attached to the second output shaft 85, and a ninth gear 69 and a tenth gear 70 And are engaged. Therefore, the rotating member 71 engages with the second output shaft 85 via the ninth gear 69 and the tenth gear 70.
[0022]
Next, a driving sprocket 87 is attached to the upper end of the first output shaft 73, and a driven sprocket 88 is attached to the lower end of the rotating shaft 10, and a chain 89 is wound around both sprockets 87, 88. Thus, the first transmission device 8 that transmits the rotation output to the first output shaft 73 to the rotary seat frame 3 and rotationally drives the rotary seat frame 3 is configured.
[0023]
An arm 92 is attached to the lower end of the second output shaft 85 via a one-way clutch 91, and a return torsion spring 93 is connected to the arm 92. Further, the wire 46 of the lock mechanism 7 is connected to the arm 92, whereby the rotation output to the second output shaft 85 is converted into a linear motion and transmitted to the lock mechanism 7 to operate the lock mechanism 7. Or the 2nd transmission device 9 which operates release is comprised.
[0024]
The variable direction seat of the present embodiment is formed compactly by integrating the motor 13, the speed reducer 14, and the output switching device 15 as a substantially L-shaped output unit 6 to balance the height and the width. Can be easily arranged under a seat where space is limited.
[0025]
The operation of the direction variable seat of the present embodiment configured as described above will be described with reference to the time chart of FIG. The control device (not shown) controls the motor 13 and the electromagnetic solenoid 80 based on the time chart.
[0026]
First, when an instruction for automatic rotation is made to turn the railroad vehicle upward, the electromagnetic solenoid 80 is demagnetized for the first few seconds. Therefore, as shown in FIG. 7 and FIG. The shaft 85 engages via a ninth gear 69 and a tenth gear 70. At the same time, the motor 13 rotates clockwise to rotate the arm 92 to the position shown by the two-dot chain line in FIG. 6, so that the wire 46 is pulled, the swing lever 36 of the lock mechanism 7 is driven, and the engagement element 37 is engaged. The lock is released by being separated from the stop portion 30. Thereafter, the electromagnetic solenoid 80 is excited, and the rotating member 71 and the first output shaft 73 are engaged as shown in FIG. In addition, since the motor 13 rotates leftward for a short time to rotate the first output shaft 73, the rotation is transmitted to the rotary seat frame 3 via the driving sprocket 87, the chain 89, and the driven sprocket 88, and the rotation is incomplete. The rotating seat frame 3 in the position is returned to the normal position. When the motor 13 rotates left again, the rotating seat frame 3 and the seat body 5 are driven to rotate upward.
[0027]
Next, when the automatic rotation is instructed to turn the railroad vehicle downward, the rotating member 71 and the second output shaft 85 are engaged and unlocked for the first few seconds as described above. Thereafter, the electromagnetic solenoid 80 is excited, and the rotating member 71 and the first output shaft 73 are engaged. Further, the motor 13 is rotated leftward for a short time, and the rotary seat frame 3 at the halfway position is returned to the normal position. Thereafter, when the motor 13 rotates clockwise, the rotating seat frame 3 and the seat body 5 are rotationally driven downward.
[0028]
As described above, since the rotation of the rotary seat frame 3 and the unlocking can be performed by one motor 13, the structure can be simplified and the cost can be reduced.
[0029]
At the time of manual rotation, the swing lever 36 is driven by the foot pedal 42, and after the engaging element 37 is disengaged from the locking portion 30, the rotating seat frame 3 is manually rotated. At this time, since the rotating member 71 and the first output shaft 73 are separated, the passenger can easily change the direction of the seat body 5 with a small force without reversely driving the motor 13. Further, since the wire 46 is separated from the swing lever 36 by the elongated hole 50 of the joint fitting 48, there is no possibility that an excessive force acts on components such as the second output shaft 85.
[0030]
Note that the present invention is not limited to the above-described embodiment, and can be embodied by appropriately changing the scope of the invention as follows, for example, as follows.
(1) The chain and the sprocket are replaced with toothed belts and gears, or replaced with combination gears.
(2) The bearing is replaced with a thrust type, an anguilla type or the like from the radial type in the above embodiment.
(3) Replace the spur gear with a bevel gear or the like.
(4) The second output shaft 85 is provided coaxially with the support shaft 55.
(5) To be embodied as a variable-direction seat for other vehicles such as a sightseeing bus or a variable-direction seat for uses other than vehicles.
[0031]
【The invention's effect】
As described above in detail, according to the variable direction seat of the present invention, the rotation driving and the unlocking of the rotary seat frame can be performed by one motor, and the structure is simplified and the cost is reduced. In addition, the motor, the speed reducer, and the output switching device can be formed into a compact shape by integrating the motor, the speed reducer, and the output switching device into a substantially L-shape, thereby achieving a balance between height and width. , It is possible to easily arrange the device underneath.
[Brief description of the drawings]
FIG. 1 is a front view of a railway vehicle seat according to an embodiment of the present invention.
FIG. 2 is a right side view of the seat.
FIG. 3 is a front view showing a main part of an output unit and the like of the seat.
FIG. 4 is a plan view showing a main part of an output unit and the like of the seat.
FIG. 5 is a plan view of the output unit.
FIG. 6 is a bottom view of the output unit.
7 is a cross-sectional view at a position connecting ABCDEF of FIG. 5;
FIG. 8 is a sectional view of a position connecting EG in FIG. 5;
9 is a sectional view taken along the line EF of FIG. 5 when the seat is rotated.
FIG. 10 is a time chart for explaining the operation of the seat.
[Explanation of symbols]
2 Fixed underframe 3 Rotating seat frame 5 Seat body 6 Output unit 7 Lock mechanism 8 First transmission device 9 Second transmission device 10 Rotating shaft 12 Case 13 Motor 14 Reducer 15 Output switching device 73 First output shaft 85 Second output axis

Claims (2)

In a variable direction seat including a rotating seat frame to which a seat body is attached, a fixed frame that rotatably supports the rotating frame, and a lock mechanism that locks the rotating seat frame to the fixed frame,
A motor rotating around a vertical axis, a reducer provided above the motor to reduce the rotation of the motor, and a first output shaft or a second output shaft provided laterally to the reducer for reducing the rotation of the motor. An output switching device for selectively switching to the output shaft and outputting the output is integrated and attached to a fixed underframe,
A first transmission device that transmits the rotation output to the first output shaft to the rotary seat frame and rotationally drives the rotary seat frame is provided,
Direction changing seats, characterized in that the second transmission device is provided for operating the actuation or release of the locking mechanism of the rotation that is outputted to the second output shaft is converted into a straight line motion is transmitted to the locking mechanism . The variable direction seat according to claim 1, wherein the motor, the speed reducer, and the output switching device are attached to one side of the fixed underframe.

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