JPH0516460U - Rotating device for vehicle seat - Google Patents

Abstract

(57) [Summary] [Purpose] In a vehicle seat that can be automatically rotated, the seat is reliably and smoothly shifted and rotated by a robust and durable structure. [Structure] A fixed underframe 2 is installed on a floor of a vehicle, and a movable table 3 is supported on the fixed underframe 2 so as to be capable of reciprocating in a direction orthogonal to a vehicle wall. A rotary base frame 6 is supported on the moving base 3 via a rotary disk 5, and an arcuate guide bar 9 having a rack 10 is fixed to the rotary base frame 6. Power source 1 such as a gear motor on the fixed underframe 2
3 is installed, and the pinion 15 and the swing holder 1 are provided on the output shaft thereof.
6 and support. A guide roller 19 that comes into contact with the outer surface of the guide bar 9 is provided on the swing holder 16, and the guide bar 9 is driven by the power source 13 while being sandwiched between the pinion 15 and the guide roller 19. According to the shape of the guide bar 9, the movable table 3 starts to rotate, moves away from the wall, approaches the end, and the rotary frame 6 rotates on the movable table 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rotating device for automatically changing the direction of vehicle seats installed on railway cars, buses, passenger ships and the like.

[0002]

[Prior Art]

 In general, vehicle seats are located close to walls to make effective use of floor space. Therefore, when rotating the seat, it is necessary to shift the seat rotation axis away from the wall so that the seat does not collide with the wall. Focusing on this point, Japanese Patent Publication No. 56-53366 discloses a vehicle seat that is manually rotated, by providing an axial center guide mechanism composed of a pin and a cam groove to prevent the axial center from rotating. Rotating devices have been proposed that are configured to move away from the wall and approach the wall at the end of rotation.

[0003]

[Problems to be solved by the device]

 However, when this conventional axial center guide mechanism is applied to a vehicle seat that can rotate automatically, there is rattling between the pin and the cam groove, so that power transmission from the power source to the seat side becomes uncertain. However, there was a problem with its durability during long-term use.

Therefore, an object of the present invention is to provide a rotating device capable of reliably shifting and rotating a seat in a vehicle seat that can be automatically rotated by a robust structure.

[0005]

[Means for Solving the Problems]

 In order to solve the above problems, a rotating device for a vehicle seat according to a first aspect of the present invention is a fixed underframe installed on the floor of a vehicle, and a method for orthogonally intersecting the vehicle wall on the fixed underframe. The carriage is supported so that it can be reciprocally moved in the opposite direction, the rotating frame that rotatably supports the seat with respect to the moving platform, the guide bar that is installed horizontally on the rotating frame, and the guide bar is driven to rotate. A drive mechanism for rotating the turntable frame is provided, and the guide bar is formed in an arc shape that is long in the moving direction of the moving table. The drive mechanism includes a rotating body that engages with one side surface of the guide bar, and a guide bar other than the guide bar. A guide roller that abuts the side surface, a swing holder that holds the guide roller at a predetermined distance from the rotating body so that the guide roller can swing about a vertical axis with respect to the fixed underframe, and a power source that drives the rotating body. In addition to installing a motion that transmits the power of the rotating body to the guide bar on one side Constructed by mounting the transfer member.

A vehicle seat rotating device according to a second aspect of the present invention also includes a fixed frame, a movable frame, a rotating frame, a guide bar, and a drive mechanism, and the guide bar is arranged in the moving direction of the movable frame. It is formed into a long arcuate shape and has a cross-sectional shape with a pair of facing surfaces, and the drive mechanism has a rotating body that engages with one facing surface of the guide bar, and a rotor that contacts the other facing surface of the guide bar and the rotating body and the shaft. A guide roller having the same center position and a power source for driving the rotating body are provided, and a power transmission member for transmitting the power of the rotating body to the guide bar is mounted on the pair of facing surfaces of the guide bar.

[0007] Here, as the "vehicle seats", for example, a large number of seats for railway vehicles are automatically rotated by remote control all at once, and each passenger is automatically rotated in a desired direction by button operation. The seats for sightseeing buses can be mentioned. As the “guide bar”, for example, one having substantially the same shape as the cam groove disclosed in the above-mentioned publication, that is, an arc-shaped one in which both ends are sharply curved and the center is gently curved, can be used. It is also possible to use an arcuate shape where the whole is gently curved.

As the "power source" for driving the "rotating body", a gear motor having a slip clutch can be exemplified so that the seat can be easily rotated even by manual operation. If is small, a normal motor is sufficient. Also, a fluid power source such as an air motor or a hydraulic motor can be used. The rotating body is directly connected to the output shaft of the power source, or is connected via an intermediate gear. When the rotating body is directly connected to the power source, the swing holder is formed, for example, in the shape of a cantilever arm, the base end of which is rotatably supported by the output shaft of the power source and is guided at the tip. All you have to do is support the rollers. When the rotating body is connected to the power source via the intermediate gear, the intermediate portion of the swing holder is rotatably supported by the fixed underframe, and the rotating body and the guide roller are provided at both ends thereof. Can be provided.

As the manner of engagement between the “power transmission member” and the rotating body, there are meshing, frictional contact, and the like. When the power of the power source is transmitted to the guide bar by meshing, for example, a rack, a ball chain, a link chain, etc. can be used as the power transmission member, and accordingly, as a rotating body, a pinion, a sprocket wheel, etc. Can be used. When the power of the power source is transmitted to the guide bar by frictional contact, a friction lining made of a flexible material such as rubber or felt can be used as the power transmission member, and a friction wheel made of a flexible material can be used as the rotating body. Can be illustrated.

[0010]

[Action]

 In the rotating device for a vehicle seat according to the first aspect, when the guide bar is driven by the drive mechanism, the moving base is moved, and at the same time, the rotating underframe is rotated on the moving base. Since the guide bar is formed in an arc shape, the moving base moves away from the wall of the vehicle at the beginning of turning and approaches the wall at the end of turning according to the shape. During this automatic rotation, the dynamic force of the power source is transmitted to the guide bar via the engagement between the rotating body and the power transmission member. Since the guide bar is driven while being sandwiched between the rotating body and the guide rollers, rattling does not occur between the rotating body and the power transmission member, and the power of the power source is reliably transmitted to the guide bar. Further, in the curved portion of the guide bar, the swing holder swings following the shape of the guide bar, so that twisting of the guide bar with the rotating body and the guide roller is prevented, and the guide bar is smoothly driven even in this part. It Therefore, the seat can be smoothly and reliably shifted and rotated by the robust and durable structure.

According to another aspect of the present invention, in the rotating device for a vehicle seat, the rotating body and the guide roller regulate the guide bar from the inner side thereof, and therefore, the rotating body and the guide roller have the same axial center position. The operation is substantially the same as that of the above operation except that the swinging holder is unnecessary and the twisting of the rotating body and the guide roller and the guide bar can be prevented with a simple structure. Also, as a result of the rotating body and the guide roller being hidden inside the guide bar, the shoe tip of the seated person may be hit or scratched on the engaging portion and abutting portion between the rotating body and the guide roller and the guide bar, and It is possible to prevent problems such as wrapping around the hem, digging into other bags such as confectionery, and adhesion of grease or the like applied to the engaging portion and the abutting portion to shoes, socks, or pants.

[0012]

【Example】

 A first embodiment in which the present invention is embodied in a rotating device for a railroad vehicle seat will be described below with reference to FIGS. In FIG. 1, F is the floor of the railway vehicle, W is the wall, 1 is the entire seat for the railway vehicle, and the seat 1 for the railway vehicle is installed close to the wall W so that the area of the floor F can be effectively used. ing. As shown in FIGS. 1 to 3, a fixed frame 2 is installed on the floor F, and a movable table 3 is supported on the upper surface of the fixed frame 2 so as to be capable of reciprocating in a direction orthogonal to the wall W. There is. A rotary frame 6 is rotatably supported on the movable table 3 via a fixed disk 4 and a rotary disk 5.

In this embodiment, a pair of seats 8 each having a reclining type backrest 7 are attached to the rotary base frame 6, and a guide bar 9 is horizontally fixed so as to extend in the moving direction of the moving base 3. Has been done. The guide bar 9 is formed of a solid steel material into an arc shape in which both ends are sharply curved and the center is gently curved, and a rack 10 as a power transmission member is fixed to the entire inner surface thereof. A drive mechanism 12 that drives the guide bar 9 to rotate the rotary underframe 6 is installed on one side of the fixed underframe 2. In addition, inside the fixed underframe 2, a lock release mechanism (not shown) for unlocking the rotating underframe 6 and the reclining backrest 7 prior to the rotation of the seat 8 is installed. A timing belt with teeth can be used as the rack 10.

As shown in FIG. 4, the drive mechanism 12 is provided with a power source 13 using a gear motor with a slip clutch in this embodiment, and the power source 13 is fixed so that the output shaft 14 is vertical. It is attached to the underframe 2. A pinion 15 as a rotating body that meshes with the rack 10 of the guide bar 9 is attached to the output shaft 14, and an arm-shaped swing holder 16 is rotatably supported by a boss portion 17 at the base end. ing. A support shaft 18 is erected on the upper surface of the tip of the swing holder 16, and a guide roller 19 is rotatably supported on the upper end thereof. The guide roller 19 is supported by the swing holder 16 so as to be swingable around the vertical axis with respect to the fixed underframe 2 at a position separated from the pinion 15 by a predetermined distance. It comes into contact and rolls.

In the rotating device having the above structure, when the power source 13 of the drive mechanism 12 is activated, the guide bar 9 is driven through the meshing between the pinion 15 and the rack 10, and as shown in FIG. At the same time as the movable table 3 is moved in the direction orthogonal to the wall W of the vehicle, the rotary frame 6 is rotated on the movable table 3. Since the guide bar 9 is formed in an arc shape in which both ends are sharply curved and the central part is gently curved, the moving base 3 moves in a direction away from the wall W within a small angle range at the start of turning according to the shape. Then, it is returned and moved in the direction approaching the wall W within the small angle range after the end of turning.

At this time, the guide bar 9 is driven while being sandwiched by the pinion 15 and the guide roller 19, so that rattling does not occur between the pinion 15 and the guide roller 19, and the power of the power source 13 is reduced. It is reliably transmitted to the guide bar 9. Further, in the curved portion of the guide bar 9, the swing holder 16 is swung following the shape thereof, so that the pinion 15, the guide roller 19 and the guide bar 9 are prevented from being twisted, and even in this portion, the proposed bar 9 is driven smoothly. Accordingly, the seat 8 can be smoothly and surely shifted and rotated by the robust and durable structure. During manual rotation, the sliding clutch built in the power source 13 disconnects the guide bar 9 from the power source 13, so that the seat 8 can be easily rotated with a light force.

Next, another embodiment of the present invention will be described with reference to FIGS. FIG. 5 shows a second embodiment relating to the modification of the drive mechanism 12, in which the pinion 15 is connected to the output shaft 14 of the power source 13 via a plurality of intermediate gears 21. Further, the swing holder 16 is rotatably supported by a shaft 22 provided upright on the fixed underframe 2 via a bearing 23 at an intermediate portion thereof. The pinion 15 is supported at one end of the swing holder 16 via a rotary shaft 24, and a guide roller 19 is provided at the other end by a support shaft 18. According to this embodiment, since the swinging holder 16 supports the pinion 15 and the guide roller 19 with respect to the fixed underframe 2 in a both-supported state, the drive mechanism 12 can be constructed more robustly, and thus the length can be increased. You can expect reliable and smooth operation over the period.

FIG. 6 shows a third embodiment relating to another modification of the drive mechanism 12. Here, a driven shaft 36 is coupled to the output shaft 14 of the power source 13 via a clutch 35, and the driven shaft 36 is driven by the driven shaft 36. The pinion 15 is attached to the shaft 36. A support cylinder 37 is erected and fixed to a fixed base frame 2 formed by combining channel materials, the driven shaft 36 is inserted into the support cylinder 37, and a swing holder 16 is rotatably supported at the upper end. ing. Further, in this embodiment, a timing belt 34 as a power transmission member is fixed to the outer surface of the guide bar 9. According to this embodiment, in particular, since the clutch 35 is provided outside the power source 13, the maintenance work of the clutch 35 becomes easy.

In each of the drive mechanisms 12 of the first to third embodiments shown in FIGS. 4 to 6, the power source 13 is installed on the center side of the fixed underframe 2 and its rotation is performed via a belt or a gear. Alternatively, it may be configured to be transmitted to the pinion 15.

FIG. 7 shows a fourth embodiment relating to the modification of the guide roller 19, and a rubber O-ring 39 is fitted on the outer peripheral surface thereof. According to this embodiment, the noise caused by the rolling of the guide roller 19 can be suppressed and the seat 8 can be rotated more quietly.

FIG. 8 shows a fifth embodiment relating to the modification of the guide bar 9. Here, the rack 10 is fixed to the outer surface of the guide bar 9, and the pinion 15 correspondingly corresponds to the guide bar 9. Guide rollers 19 are provided outside the guide bar 9 and inside the guide bar 9. According to this embodiment, since the curvature of the rack 10 at the curved portion of the guide bar 9 becomes relatively large, the pinion 15 can be meshed with the rack 10 more smoothly.

FIG. 9 shows a sixth embodiment relating to the change of the power transmission member and the rotating body. The ball chain 26 is used as the power transmitting member and the sprocket wheel 27 is used as the rotating body. Each ball 28 of the ball chain 26 is fitted in a recess 29 formed on the inner surface or the outer surface of the guide bar 9, and in that state, meshes with the sprocket wheel 27. Therefore, according to this embodiment as well, a power transmission effect similar to that of the above-described embodiments can be obtained, and a unique effect that smooth engagement can be expected by utilizing slight play of each ball 28 can be expected. It is also possible to use a link chain as the power transmission member by meshing.

FIG. 10 shows a seventh embodiment according to another modification of the power transmission member and the rotating body. The friction lining 31 made of a flexible material such as rubber or felt is used as the power transmission member, and A friction wheel 32 made of the same flexible material is used as the. According to this embodiment, since power is transmitted by frictional contact, there is an effect that noise can be prevented and the seat can be quietly rotated.

FIG. 11 shows an eighth embodiment relating to the change of the guide bar 9 and the drive mechanism 12. The proposed bar 9 has an arcuate shape as in the first embodiment, but the cross-sectional shape is a downward opening. It is in the shape of a letter and has a pair of facing surfaces inside. A rack 10 as a power transmission member is fixed to one of the facing surfaces. A power source 13 is bolted to the lower surface of the fixed underframe 2 via a spacer 41. Similarly to the third embodiment, the driven shaft 36 is coupled to the output shaft 14 of the power source 13 via the clutch 35, and the driven shaft 36 is inserted into the support cylinder 37 fixed to the fixed underframe 2. There is. A pinion 15 that meshes with the rack 10 is mounted in the middle of the driven shaft 36, and a guide roller 19 that rolls in contact with the other facing surface of the guide bar 9 rolls at the upper end of the driven shaft 36. It is rotatably supported by 42.

According to this embodiment, the pinion 15 and the guide roller 19 regulate the guide bar 9 from the inside thereof, so that the axial center positions of these can be made equal to each other, and the rocking can be performed compared with the first embodiment and the like. It is possible to prevent the twisting of the pinion 15 and the guide roller 19 in the curved portion of the guide bar 9 with a simple structure because the holder is unnecessary. Further, as a result of the pinion 15 and the guide roller 19 being hidden inside the guide bar 9, the engaging part and the abutting part of the pinion 15 and the guide roller 19 and the guide bar 9 are hit by the toes of the seated person and scratched. To prevent problems such as sticking, wrapping around the hem of pants, digging into other bags such as confectionery, and the grease etc. applied to the engaging and abutting parts sticking to shoes, socks and subon be able to.

In addition, the present invention may be applied to various types of vehicle seats such as a sightseeing bus and a passenger ship, and the configuration of each part may be appropriately changed and embodied without departing from the spirit of the present invention. ..

[0027]

[Effect of the device]

 As described above in detail, according to the rotation device for a vehicle seat according to the first aspect of the present invention, rattling does not occur between the rotating body and the power transmission member, and the curved portion of the guide bar is prevented. Even if it is, the power of the motor can be reliably transmitted to the guide bar, and the robust and durable structure has the effect of smoothly shifting and rotating the seat.

According to the vehicle seat rotating device of the second aspect, in addition to the above effects, the structure is further simplified, and the rotating body, the guide roller and the guide bar are engaged and abutted with each other. If the shoe tip of a seated person hits the part, the hem of the trousers is rolled up, other bags such as confectionery are caught, and grease applied to the engaging part and the abutting part It is possible to prevent problems such as sticking to shoes, socks and pants.

[Brief description of drawings]

FIG. 1 is a front view of a railway vehicle seat showing an embodiment of the present invention.

FIG. 2 is a plan view showing a rotating device for the railway vehicle seat of FIG.

FIG. 3 is a plan view showing an operating state of the rotating device of FIG.

FIG. 4 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 5 is a sectional view showing a second embodiment relating to the change of the drive mechanism.

FIG. 6 is a sectional view showing a third embodiment according to another modification of the drive mechanism.

FIG. 7 is a sectional view showing a fourth embodiment relating to the change of the guide roller.

FIG. 8 is a plan view showing a fifth embodiment of changing the guide bar.

FIG. 9 is a sectional view showing a sixth embodiment relating to the change of the power transmission member and the rotating body.

FIG. 10 is a sectional view showing a seventh embodiment according to another modification of the power transmission member and the rotating body.

FIG. 11 is a sectional view showing an eighth embodiment relating to the change of the guide bar and the drive mechanism.

[Explanation of symbols]

1 Railway Vehicle Seat 2 Fixed Underframe 3 Moving Platform 6 Rotating Underframe 8 Seat 9 Guide Bar 10 Rack 12 Drive Mechanism 13 Power Source 15 Pinion 16 Swing Holder 19 Guide Roller 26 Ball Chain 27 Sprocket Wheel 31 Friction Lining 32 Friction Wheel 34 Timing Belt F Floor W Wall

Claims (2)

[Scope of utility model registration request] 1. A fixed underframe installed on a floor of a vehicle, a movable table supported on the fixed underframe so as to be capable of reciprocating in a direction orthogonal to a wall of the vehicle, and a seat rotating with respect to the movable table. A movable frame that supports the movable frame, a guide bar horizontally provided on the rotary frame, and a drive mechanism that drives the guide bar to rotate the rotary frame. The drive mechanism is formed in an arcuate shape that is long in the moving direction, and the drive mechanism includes a rotating body that engages with one side surface of the guide bar, a guide roller that abuts against the other side surface of the guide bar, and a guide roller that is separated from the rotating body by a predetermined distance. A swing holder that holds the fixed underframe so that it can swing about a vertical axis and a power source that drives the rotating body are provided, and the power of the rotating body is transmitted to the guide bar on one side of the guide bar. Rotating device for a vehicle seat equipped with a power transmission member. 2. A fixed underframe installed on the floor of a vehicle, a movable platform supported on the fixed underframe so as to be capable of reciprocating in a direction orthogonal to a wall of the vehicle, and a seat rotating with respect to the movable platform. A movable frame that supports the movable frame, a guide bar horizontally provided on the rotary frame, and a drive mechanism that drives the guide bar to rotate the rotary frame. It is formed in a cross section having a pair of facing surfaces that is long in the direction of movement, and the drive mechanism has a rotating body that engages with the facing surface of the guide bar, and rotates while contacting the other facing surface of the guide bar. A vehicle equipped with a guide roller having the same axial center position as the body and a power source for driving the rotating body, and a power transmission member for transmitting the power of the rotating body to the guide bar is mounted on the pair of facing surfaces of the guide bar. Seat rotation device.