JP6470035B2 - Table device for seat - Google Patents

Description

  The present invention relates to a seat table device including a table top that is housed in a side of a seat and is deployed forward of a seated person when in use, and is particularly applied to a vehicle seat such as a railway vehicle.

  2. Description of the Related Art Conventionally, some vehicle seats installed on a railway vehicle or the like are provided with a table for the convenience of a seated person. As such a table for a seat, for example, as shown in FIG. 10, a table provided on an armrest on the side of the seat is known. That is, there are many types in which the upper surface side of the armrest is configured as an openable / closable cover and a foldable table is housed therein.

  When using such a table, open the armrest cover (see FIG. 10A), pull the table out of the armrest and turn it forward 180 degrees (see FIG. 10B), then close the cover. (See FIG. 10A), and the table is further tilted by 90 degrees laterally (see FIG. 10C). Thereby, the table is developed in a substantially horizontal state in front of the seated person. In addition, when it was desired to increase the table area, it was possible to open and use the one folded into two sheets (see FIG. 10D). Here, the armrest provided with the table is normally fixed integrally to the frame side of the seat.

  Further, many vehicle seats are provided with a reclining mechanism for providing a comfortable sitting comfort. In such a seat, the backrest is normally supported so as to be tiltable on the rear end side of the seat, and the backrest can be tilted backward by the seat occupant pushing the backrest backward on the back, Moreover, it was comprised so that it could lock to a desired inclination angle with a gas spring etc.

  In a seat equipped with such a table or reclining mechanism, the armrest with the table itself is not movable and is fixed, so that it can always maintain the same height regardless of the tilting position of the backrest by the reclining operation. It was. Therefore, when the backrest falls backward due to the reclining operation, the seated person leaves the table in front of the seat, and there is a problem that the use environment of the table is impaired.

  In view of the problem of such a conventional seat, as disclosed in Patent Document 1, for example, a table apparatus that can arbitrarily adjust the position of the table has already been proposed. That is, in Patent Document 1, the housing in which the table is stored is adjusted to a desired horizontal position or height position with respect to the seat, the table stored in the housing is pulled out, and then the table is moved to the side. A structure for rotating and supporting in a horizontal state of use is disclosed.

JP 2008-74396 A

  However, in the seat table described in Patent Document 1 described above, even if the position of the housing provided with the table can be adjusted in advance, the position is maintained in the same manner as the fixed armrest after the adjustment. Therefore, even if the backrest is reclined (backward tilted), the housing will not move in response to this, so as the backrest is tilted backward, the seat occupant moves away from the table in front of the seat, and the table is used. There was a problem that the environment was damaged and the position of the housing (table) had to be readjusted each time.

  Also, the top side of the housing is configured as a cover that can be opened and closed, and since the table is housed inside it, it is difficult to understand the presence of the table at first glance, and it may be impossible to use it without noticing the table after all. There were many problems. In addition, the operation of adjusting the housing (table) to a desired horizontal position is troublesome, and the support mechanism is complicated and expensive, resulting in increased costs.

  Moreover, like the seat table shown in FIG. 10, the table is stored in a folded state. Therefore, when using the table, even if the operation of rotating the entire table in two different directions is unnecessary, the operation of rotating one of the two folded tables upward with respect to the other is performed. Necessary. Such an operation is troublesome and there is a risk that the finger may be pinched due to its structure.

  The present invention has been made by paying attention to the problems of the conventional techniques as described above, and by making the table follow in conjunction with the reclining operation, it is possible to provide a user-friendly table usage environment in any reclining posture. A table device for seats that can be realized, can easily check the location of the table at a glance, can be handled with a simple operation when stored or used, and has excellent safety during operation. The purpose is to provide.

The gist of the present invention for achieving the object described above resides in the inventions of the following items.
[1] In a table apparatus for a seat (60a) including a table top (61) that is housed on the side of the seat (10) and that is unfolded forward of a seated person when in use.
The seat (10) is capable of a reclining operation in which the seat (20) and the backrest (30) supported on the rear end side are interlocked with each other.
On the side of the seat (20), an armrest (40) that is directly linked to the reclining operation of the seat (20) is integrally provided,
A sleeve portion (51) having an upper surface side forming an extension portion (50) of the armrest (40) is provided at a position continuous to the front of the armrest (40) on the side of the seat portion (20). 51) is arranged so as to cover the side at the front end side of the seat (20),
The upper end of the sleeve (51) is pivotably connected to the front end of the armrest (40), and the entire sleeve (51) is vertically oriented with the connecting point as the center of rotation. And a sleeve guide mechanism that supports the other part of the sleeve (51) so as to be displaceable.
Regardless of the change in inclination of the seat (20) to the armrest (40) due to the reclining operation, the sleeve (51) is rotated with respect to the front end of the armrest (40) by the sleeve guide mechanism. However, the upper surface side is supported in a substantially horizontal state,
The table top (61) is provided in the sleeve (51) and stored in the sleeve (51), and is pulled out of the sleeve (51). The seat table device (60a), which is displaceable to a use state where it is deployed in front of a seated person in a substantially horizontal state as in the upper surface side .

[ 2 ] The seat (20) and the backrest (30) are supported on a base frame (11),
The sleeve guide mechanism is provided on one of the sleeve frame (52) and the base frame (11) constituting the sleeve (51), and the reclining operation of the other part of the sleeve (51). A guide groove (77) extending along a trajectory of movement linked to the guide groove (77), and a fitting portion (78) provided on either one of the guide groove (77) and slidably guided by fitting in the guide groove (77), The seat table device (60a) according to the above [ 1 ], comprising:

[ 3 ] The sleeve (51) is formed with a longitudinal groove (53) for storing the tabletop (61) in an upright state,
The table top (61) is drawn upward from the vertical groove (53) from one side end exposed from the opening of the vertical groove (53), and is rotated around the other side end still remaining in the vertical groove (53). The seating table device (60a) according to [ 1 ] or [ 2 ], wherein the seating table device (60a) is tilted laterally as a moving center and supported in the use state.

[ 4 ] The longitudinal groove (53) is formed so as to open narrowly on the inner surface of the sleeve (51) and to extend obliquely downward from the opening inside the sleeve (51). ,
Said table top (61), seat according to [3], characterized in that it is housed in said longitudinal groove (53) in a upright obliquely along the inclination of the longitudinal grooves (53) Table device (60a).

[ 5 ] The one end side (62) of the table top (61) is exposed from the opening of the vertical groove (53) when being accommodated in the vertical groove (53). The seat table device (60a) according to [ 3 ] or [ 4 ], wherein a handle (62a) for hanging is provided.

[ 6 ] On the other end side (63) of the table top (61), there is a stopper (64) for preventing the retainer from staying inside the opening of the vertical groove (53) when being pulled out from the vertical groove (53). The seat table device (60a) according to [ 3 ], [ 4 ] or [ 5 ], wherein the seat table device (60a) is provided, and the stopper (64) serves as a rotation center.

[ 7 ] The stopper (64) is provided with an angle holding portion for holding the table top (61) at the rotation angle when the table top (61) is tilted in a substantially horizontal state. The seat table device (60a) according to [ 6 ] above.

[ 8 ] The table top (61) is divided into a plurality of units (61a, 61b) on both sides, and the units (61a, 61b) are connected to each other via hinges (61c) so that they can be bent. When the units (61a, 61b) are housed in the longitudinal grooves (53), the upper surfaces of the units (61a, 61b) are aligned on the same plane, and are drawn out from the longitudinal grooves (53) in units of the units (61a, 61b). Is possible,
The unit (61a) pulled out from the opening of the vertical groove (53) to the hinge (61c) between the units (61a, 61b) is still connected to the unit (61b) in the vertical groove (53). The angle holding portion is provided that is bent at a predetermined angle and held in a substantially horizontal state, while the units (61a, 61b) pulled out from the opening of the vertical groove (53) are held in a state of being connected to each other at 180 degrees. The seat table device (60a) according to [ 3 ], [ 4 ], [ 5 ], [ 6 ] or [ 7 ], which is characterized by the above.

Next, the operation based on the above solution will be described.
According to the seat table device (60a) described in [1], the seat portion (20) of the seat (10) and the backrest (30) supported on the rear end side are interlocked with each other. It is possible to adjust the posture to be comfortable for the seated person. The table top (61) is supported so as to be housed or unfoldable, and unfolds in a substantially horizontal state in front of the seated person when in use.

  Even when the table top (61) is deployed, the posture of the seat (20) or the backrest (30) changes due to the reclining operation, but in conjunction with the reclining operation, the table top (61) Is maintained in a substantially horizontal state, so that the distance from the seated person is also kept constant.

  As a result, as in the case where the table top (61) stays at a fixed position, the relative positional relationship between the table top (61) and the seated person is difficult to use as the table top (61) is separated or tilted with the reclining operation. Will not change. Therefore, the seated person can comfortably use the table regardless of the change in posture caused by the reclining operation.

The armrest (40) provided integrally on the side of the seat (20) is directly interlocked with the reclining operation of the seat (20). A sleeve portion (51) whose upper surface side forms an extension portion (50) of the armrest (40) is provided at a position continuous to the front of the armrest (40) on the side of the seat portion (20), and the sleeve portion (51). Is arranged so as to cover the side on the front end side of the seat (20). The upper surface side of the sleeve portion (51) is also used as an armrest (40), and a seated person can put his arms on a wider range.

  Here, the sleeve portion (51) is not fixed like the armrest (40), and the rear end on the upper surface side of the sleeve portion (51) is rotatably connected to the front end of the armrest (40). The entire sleeve portion (51) is supported so as to be tiltable in the vertical direction with the connecting portion as a rotation center. In addition, the other portions other than the rear end on the upper surface side of the sleeve portion (51) are supported by the sleeve portion guide mechanism, regardless of the change in the inclination of the seat portion (20) or the armrest (40) due to the reclining operation. First, the sleeve (51) is maintained in a substantially horizontal state on the upper surface side while rotating with respect to the front end of the armrest (40).

  That is, even if the armrest (40) is inclined according to the reclining operation, the sleeve portion (51) is vertically oriented with respect to the front end of the armrest (40) to which the rear end on the upper surface side of the sleeve portion (51) is connected. Further, the other part of the sleeve part (51) is supported by the sleeve part guide mechanism and moves along a trajectory that keeps the upper surface side of the sleeve part (51) in a substantially horizontal state. In this way, the sleeve (51) is supported at least at two locations so as to be maintained in a substantially horizontal state. In addition, although a sleeve part (51) makes the extension part (50) of an armrest (40), it may be bent from the front end of an armrest (40).

  The table top (61) is provided on such a sleeve (51). That is, the table top (61) is stored in the sleeve portion (51) and pulled out to the outside of the sleeve portion (51), and is in a substantially horizontal state in the same manner as the upper surface side of the sleeve portion (51). It can be displaced to the usage state to be deployed. Thus, the movable sleeve part (51) used as the extension part (50) is provided in front of the armrest (40), and this sleeve part (51) is used for storing or supporting the table top (61). be able to.

According to the seat table device (60a) described in [ 2 ], the seat (20) and the backrest (30) are supported on the base frame (11), and the base frame (11) is used. Thus, the sleeve portion guide mechanism can be simply configured. In other words, the sleeve guide mechanism is fitted into the guide groove (77) provided in one of the sleeve frame (52) and the base frame (11) constituting the sleeve (51). It can comprise simply by fitting a part (78). Here, the guide groove (77) has a shape that extends along a movement locus linked to the reclining operation of the other part of the sleeve (51) and regulates the movement of the other part. A fitting part (78) is guided along.

In addition, as a specific manner of attaching the sleeve (51) to the table top (61), for example, as described in [ 3 ] above, the table top (61) is erected on the sleeve (51). A vertical groove (53) to be housed is formed. Here, it is sufficient that the sleeve portion (51) has a thickness capable of accommodating the table top (61) therein. The table top (61) is drawn upward from the vertical groove (53) from one side end exposed from the opening of the vertical groove (53), and the other side end still remaining in the vertical groove (53) is the rotation center. It is tilted to the side and is supported in the use state. The table top (61) can be handled with such a simple operation, and it is not necessary to open and close an armrest cover or a folded and overlapping table, and safety is improved.

According to the seat table device (60a) described in [ 4 ], the longitudinal groove (53) opens narrowly on the inner side surface of the sleeve (51), and the sleeve (51 ) And the table top (61) is housed in the vertical groove (53) in an inclined state along the inclination of the vertical groove (53). The Thereby, compared with the case where the table top (61) is put in and taken out in the vertical direction, the burden of the pulling-up operation is reduced and the falling speed when returning is also reduced.

According to the table device for a seat (60a) described in [ 5 ], when the table top (61) is housed in the longitudinal groove (53), the longitudinal groove ( 53) and a handle (62a) which is exposed from the opening of 53) and on which a seated person puts his / her finger. Therefore, the one end side (62) of the table top (61) can be easily grasped and can be easily pulled out from the longitudinal groove (53).

According to the table device for seat (60a) described in [ 6 ], the other end side (63) of the table top (61) is provided with the longitudinal groove (53) when pulled out from the longitudinal groove (53). A stopper (64) for retaining the stopper staying inside the opening is provided, and the stopper (64) serves as a rotation center. As a result, it is possible to prevent the table top (61) from coming off when being pulled out, and the stopper (64) also serves as the center of rotation, thereby further simplifying the configuration.

According to the seat table device (60a) described in [ 7 ], the stopper (64) holds the table top (61) at the rotation angle when the table top (61) is tilted in a substantially horizontal state. An angle holding part is provided. Thereby, the table top (61) can be reliably held in a substantially horizontal state by the configuration of the stopper (64) itself that also serves as the rotation center.

According to the seat table device (60a) described in [ 8 ], the table top (61) is divided into a plurality of units (61a, 61b) on both sides thereof, and the units (61a, 61b) are Each is connected via a hinge (61c) so that it can be bent. When the table top (61) is housed in the vertical groove (53), the units (61a, 61b) are in an upright state with their upper surfaces aligned on the same plane, and the vertical groove (53 ) From each unit (61a, 61b).

  In the hinge (61c) between the units (61a, 61b), the unit (61a) pulled out from the opening of the vertical groove (53) is still connected to the unit (61b) in the vertical groove (53). The unit (61a, 61b) pulled out from the opening of the vertical groove (53) is provided with an angle holding unit that holds the unit in a state where the unit is bent at a predetermined angle and held in a substantially horizontal state.

  Here, if the direction in which the longitudinal groove (53) extends is a direction that is inclined outward and obliquely downward so as to intersect the vertical direction or the vertical direction, the unit (61b) in the longitudinal groove (53) and the longitudinal groove ( 53) The angle θ formed by the outer substantially horizontal unit (61a) is a predetermined angle within a range of a right angle (θ = 90 degrees) to an obtuse angle (90 degrees <θ <180 degrees), and is held at the angle.

  In addition, the angle between the units (61a, 61b) arranged substantially horizontally outside the vertical groove (53) is maintained at 180 degrees, but this angle restriction is not only restricted to the opening direction from 180 degrees, Regulations in the closing direction may be included. Alternatively, only the restriction in the opening direction from 180 degrees is set, and the restriction in the closing direction is set up to the predetermined angle, and the unit (61a) at the outermost end is placed on the opposite side of the seat (10). Although it may be supported on the armrest and replaced with the restriction in the closing direction, the number of each unit (61a, 61b) in this case is two.

  According to the seating table device of the present invention, it is possible to realize an easy-to-use table usage environment in any reclining posture by following the table in conjunction with the reclining operation. Further, the location of the table can be easily confirmed at a glance, and can be handled with a simple operation when stored or used. Furthermore, the safety at the time of operation of a table can also be improved.

It is a side view which shows roughly the state which has the seat which concerns on embodiment of this invention in an upright attitude | position. It is a front view showing roughly a seat concerning an embodiment of the invention. It is a top view which shows the seat which concerns on embodiment of this invention. It is a side view which shows roughly the state which has the seat which concerns on embodiment of this invention in a reclining attitude | position. It is the (a) top view and (b) front view which show the accommodation state of the tabletop which concerns on embodiment of this invention. It is the (a) top view and the (b) front view which show the use condition which pulled out only part among the table tops concerning embodiment of this invention. It is the (a) top view, (b) front view, and (c) side view which show the use condition which pulled out all the table tops concerning embodiment of this invention. It is a series of side views explaining the movement of the sleeve guide mechanism according to the embodiment of the present invention. It is a series of top views explaining operation of the table top concerning an embodiment of the invention. It is a series of explanatory diagrams for explaining the operation of a conventional table top.

Hereinafter, an embodiment representing the present invention will be described with reference to the drawings.
1 to 9 show an embodiment of the present invention.
The seat 10 according to the present embodiment is installed in a passenger cabin of a vehicle such as a railway vehicle, for example, and a backrest 30 is supported on the rear end side of the seat 20, and the seat 20 and the backrest 30 are The reclining operation | movement interlock | cooperated mutually is comprised.

  The seat 10 is equipped with a seat table 60 or a seat table device 60a. Here, the seat table 60 refers to a table top 61 that forms the main part thereof and a mechanism that directly supports the table top 61, and the seat table device 60a includes not only the table top 61 and a mechanism that directly supports the table top 61. A concept including a sleeve 51 and a sleeve guide mechanism, which will be described later, in which the table top 61 is provided.

  In the reclining operation of the seat 10, as will be described in detail later, the rear end side of the seat portion 20 is retreated and descends greatly from the front end side, and the backrest 30 also descends while tilting backward as the seat portion 20 moves. Regardless of the change in the posture of the seat 20 or the backrest 30 due to such a reclining operation, the table top 61 will be described in detail later. While being maintained in a horizontal state, the distance from the seated person is also kept constant. Hereinafter, the configuration of each part of the seat 10 will be described in order.

  As shown in FIGS. 1 to 3, in the seat 10, a two-seat seat 20 and a backrest 30 are supported on a base frame 11 fixed on a floor. A pair of armrests 40 are provided on both sides of each seat 20. Further, on the side near the center of the seat where the seats 20 face each other on the left and right sides, a sleeve portion 51 whose upper surface side forms an extension 50 of the armrest 40 is provided at a position continuous to the front of the armrest 40 on this side. Yes. The sleeve portion 51 is disposed so as to cover the side on the front end side of the seat portion 20, and a table top 61 is provided on the sleeve portion 51, as will be described in detail later.

  The base frame 11 that is the base of the seat 10 is provided with a pair of side plates 13, 13 standing on both sides of each seat 20 on a base 12 that is directly fixed on the floor, The rear is connected by a pair of shafts 14 and 14 extending in both directions. Here, the side plate 13 is made of a metal plate material processed into the illustrated shape, and the shaft 14 is made of a metal pipe material. If the base frame 11 is supported with respect to the base 12 via a rotation mechanism (not shown) so that it can rotate 180 degrees in a substantially horizontal direction, the direction of the seat 10 can be reversed.

  The seat portion 20 is configured by mounting a cushion material such as urethane foam on the seat frame inside thereof and covering the seat surface of the cushion material with a skin material. Similarly, the backrest 30 is also configured by mounting a cushion material on the backrest frame 31 inside and covering the backrest surface of the cushion material with a skin material. The backrest 30 is integrally provided with a substantially triangular support bracket 32 projecting forward on the left and right sides of a backrest frame 31 extending from the lower end thereof. The front end of the support bracket 32 is rotatably supported on the rear end side of the seat portion 20 via the pivot 33, and the backrest 30 is predetermined with respect to the seat portion 20 about the pivot 33. It rotates in the angle range. Such a seat part 20 and the backrest 30 can perform a reclining operation in conjunction with each other.

  A pair of armrests 40, 40 on both sides of the seat portion 20 are provided on the upper surface side of the sleeve-like side portion 41 that covers the side of the seat portion 20. The side portion 41 includes the armrest 40 on the upper surface side and is configured by covering a plate-like side frame 42 with a cushioning material, a skin material or the like, and is integrally formed on both sides of the seat portion 20 (the seat portion frame). It is fixed. Accordingly, the armrest 40 or the side portion 41 is displaced integrally with the reclining operation of the seat portion 20, and the side frame 42 is disposed in a state of facing the inner side of the side plate 13 of the base frame 11. Further, the support bracket 32 of the backrest frame 31 is pivotally supported with respect to the side frame 42 so as to be rotatable.

  Of the pair of armrests 40, 40, the sleeve portion 51 described above is provided in front of the armrest 40 closer to the center of the seat. The sleeve portion 51 is disposed so as to be continuous with the front side of the side portion 41, and the upper surface side is configured as an extension portion 50 that is continuous with the armrest 40. Therefore, the extension part 50 which is also the upper surface side of the sleeve part 51 forms an armrest.

  The sleeve portion 51 has a generally flat and substantially cubic shape having substantially the same thickness as the side portion 41, and includes a cushion material and a sleeve-like sleeve portion frame 52 including an extension portion 50 on the upper surface side. Covered with a skin material. Inside the sleeve portion 51, there is a space for storing the table top 61 along the inside of the sleeve portion frame 52. The sleeve portion 51 is supported so as to be displaceable unlike the side portion 41 and interlocks with the reclining operation, which will be described in detail later.

  The seating table 60 through the device 60a are housed on the side of the seat 10 and include a table top 61 that is deployed forward of the seated person when in use. The table top 61 is provided in the sleeve 51 on the side of the seat 10 positioned in front of the seated person, and the sleeve 51 is provided with a longitudinal groove 53 for storing the table top 61 in an upright state. ing.

  The table top 61 is drawn upward from the vertical groove 53 from the one end side 62 exposed from the opening 53a of the vertical groove 53, and tilted sideways with the other end side 63 still remaining in the vertical groove 53 as a rotation center. The upper surface is held in a substantially horizontal state. That is, the table top 61 is substantially the same as the retracted state housed in the longitudinal groove 53 of the sleeve portion 51 and the extension portion 50 that is pulled out of the longitudinal groove 53 and is the upper surface side of the sleeve portion 51. It can be displaced to a use state where it is deployed in a horizontal state.

  As shown in FIGS. 5 to 7, the longitudinal groove 53 opens in a narrow width on the inner surface side of the sleeve portion 51, and extends downward in the sleeve portion 51. The longitudinal groove 53 is formed so as to be inclined obliquely downward toward the outside from the side of the seat 10. Here, “the side of the seat 10” means not the side of the entire seat for two persons but the side when the seat 20 is regarded as one seat, that is, the side of the seat 20. It is. The table top 61 is accommodated in the vertical groove 53 in a state where the table top 61 is tilted along the inclination of the vertical groove 53.

  The table top 61 is, for example, formed in a horizontally-long rectangular plate shape as a whole by synthetic resin or metal, for example. One end 62 of the table top 61 is provided with a handle 62a that is exposed from the opening 53a of the vertical groove 53 and is seated by a seated person when stored in the vertical groove 53. The handle 62a is formed in a concave groove shape extending a predetermined length along the edge on the back surface side of the one end side 62.

  The other end 63 of the table top 61 is provided with a stopper 64 for preventing the retainer 64 from staying inside the opening 53 a of the vertical groove 53 when the table top 61 is pulled out from the vertical groove 53. The center of rotation. Here, the stopper 64 also serves as a hinge that rotatably connects an end portion of a short length defined as the other end side 63 and the other portion of the table top 61.

  That is, the front-rear width of the stopper 64 or the other end 63 is slightly larger than other portions of the table top 61 and is set to a dimension that cannot pass through the inner edge of the opening 53 a of the vertical groove 53. Therefore, the stopper 64 or the other end side 63 stays in the vertical groove 53 when the table is used, and serves as a base for supporting the table top 61 in the use state. The stopper 64 itself is not necessarily the center of rotation, and a separate rotation center such as a hinge may be provided beside the stopper 64.

  The hinge which is the stopper 64 is provided with an angle holding portion for holding the table top 61 at the rotation angle when the table top 61 is tilted with the hinge as a rotation center so that the upper surface is substantially horizontal. That is, as shown in FIG. 7B, as the structure of the hinge itself, the other part of the table top 61 is slightly more than a right angle with respect to the other end side 63 that remains oblique along the inclination of the longitudinal groove 53. By restricting the rotation to a large predetermined angle, it is configured so that it can be held in a level state.

  More specifically, as the structure of the hinge itself, the angle holding portion may be formed in such a shape that the end portions of the other end side 63 and other portions aligned with each other are just engaged at the predetermined angle described above. The predetermined angle here is a design matter that can be appropriately changed according to a specific inclination angle of the vertical groove 53 with respect to the horizontal direction. In addition, you may comprise an angle holding | maintenance part by the other well-known alternative means separately from the structure of hinge itself.

  Further, the table top 61 is not a single unit in the present embodiment, but is divided into two units 61a and 61b in both directions, and each unit 61a and 61b can be bent via a hinge 61c. Are connected. Here, the unit 61a including the one end side 62 of the table top 61 is formed in a small area having a shorter length than the unit 61b forming the other main part. When the table top 61 is housed in the vertical groove 53, the units 61 a and 61 b can be pulled out from the vertical groove 53 in units by unit.

  The hinge 61c between the units 61a and 61b has the same configuration as the hinge that serves as the stopper 64 described above, but does not require a function as a stopper. In the hinge 61c, the unit 61a pulled out from the opening 53a of the vertical groove 53 is still bent at a predetermined angle with respect to the unit 61b in the vertical groove 53 and held in a substantially horizontal state, while the opening of the vertical groove 53 is maintained. The units 61a and 61b pulled out from 53a are provided with an angle holding portion that holds the units 61a and 61b in a state of being connected to each other at 180 degrees.

  Similarly to the case of the stopper 64, the angle holding portion in the hinge 61c may have a shape in which the ends of the units 61a and 61b aligned with each other are just engaged at the predetermined angle. That is, as a structure of the hinge 61c itself, the rotation of the unit 61a is restricted to a predetermined angle slightly larger than a right angle with respect to the unit 61b that stays in an inclined state along the inclination of the vertical groove 53, and in the opposite direction. The rotation range may be configured to be engaged so as to be restricted to 180 degrees. The restriction of the rotation range in the opposite direction may be configured similarly for the stopper 64. Of course, apart from the structure of the hinge itself, the rotation range may be restricted by other known alternative means.

Next, a reclining mechanism for reclining the seat 10 will be described.
The reclining mechanism displaces the seat 10 from an upright posture (see FIG. 1) in which the backrest 30 stands up most to a reclining posture (see FIG. 4) inclined most backward. Such a reclining mechanism includes a seat guide mechanism that lowers the rear end more than the front end while retracting the seat 20, and a backrest that lowers the backrest 30 while tilting backward while retreating according to the movement of the seat 20. And a guide mechanism.

  As shown in FIGS. 1 and 4, the seat guide mechanism is provided in the seat portion 20 corresponding to two guide grooves 71 and 72 provided in front and rear positions of the side plate 13 of the base frame 11. It consists of two fitting parts 73 and 74. More specifically, the side plate 13 of the base frame 11 has a length corresponding to the length of the seat portion 20 in the front-rear direction, and one guide groove 71 is disposed at a front position of the side plate 13 and the other guide. The groove 72 is disposed at a position slightly rearward from the center of the side plate 13 away from the guide groove 71.

  One guide groove 71 is formed in an arc shape along a circumference centering on a rotation center P (refer to FIG. 1) of the reclining operation assumed at a position in front of and below the seat portion 20. The other guide groove 72 is similarly drilled in an arc shape along a circumference centered on the rotation center P. Here, the central angle of the arc of one guide groove 71 and the center angle of the arc of the other guide groove 72 are the same, and the guide groove 72 is separated rearward from the rotation center P. Is longer than the guide groove 71.

  The fitting portion 73 corresponding to one guide groove 71 is provided so as to protrude outward from the front position on the lower outer surface side of the side frame 42 integral with the seat portion 20. The fitting portion 73 is a synthetic resin slider that is movably fitted and guided in the guide groove 71, and extends in an arc shape by a predetermined length of the entire length of the guide groove 71. It is semicircular and is formed to a thickness that is slightly smaller than the width of the guide groove 71 and does not fall out of the guide groove 71.

  The fitting portion 74 corresponding to the other guide groove 72 is provided so as to protrude outward from the rear position on the lower outer surface side of the side frame 42. The fitting portion 74 is also a synthetic resin slider that is movably fitted and guided in the guide groove 72, and is formed of synthetic resin in the same shape as the fitting portion 73. In addition, each fitting part 73 and 74 is not limited to a slider, You may comprise with 1 thru | or several rollers.

  By such a seat portion guide mechanism, the seat portion 20 is displaced so as to be largely lowered from the front end side while the rear end side is retracted during the reclining operation of the seat 10. Specifically, the two fitting portions 73 and 74 below the seat portion 20 move while being guided downward in the corresponding guide grooves 71 and 72, respectively, so that the seat portion 20 is regulated by the displacement described above. The Note that the guide grooves 71 and 72 and the fitting portions 73 and 74 constituting the seat guide mechanism are not necessarily limited to two sets, and are constituted by only one set in relation to the backrest guide mechanism described below. It is also possible to increase the support stability by three or more sets.

  The backrest guide mechanism includes one guide groove 75 provided at the rear position of the side plate 13 of the base frame 11 and one fitting portion 76 provided in the backrest 30 correspondingly. . More specifically, the guide groove 75 is formed in the side plate 13 at a position further rearward than the guide groove 72 so as to extend obliquely rearward. Here, the guide groove 75 does not necessarily have a shape extending in an arc shape, and the support angle of the backrest 30 with respect to the seat portion 20 is set within a predetermined angle range in accordance with the movement of the seat portion 20 by the above-described seat portion guide mechanism. The guide shape is set so as to keep the optimum angle.

  The fitting portion 76 is provided so as to protrude outward from the lower ends of the left and right sides of the backrest frame 31. The fitting portion 76 is a synthetic resin roller that is guided by being movably fitted in the guide groove 75, and has an outer diameter slightly smaller than the width dimension of the guide groove 75 and does not fall out of the guide groove 75. Molded to thickness. In addition, the roller which is the fitting part 76 is not restricted to what was rotatably supported, The thing fixed so that rotation was impossible may be sufficient, and you may comprise as a slider instead of a roller.

  By such a backrest guide mechanism, the backrest 30 descends while tilting rearward during the reclining operation of the seat 10. Specifically, the fitting portion 76 below the backrest 30 moves while being guided downward in the guide groove 75, so that the backrest 30 simply tilts and descends backward by the amount of displacement of the seat portion 20. In addition, the relative support angle with respect to the seat portion 20 is not constant, and is regulated so as to be inclined at an optimum angle within a predetermined angle range with the pivot 33 as the rotation center.

  Next, a sleeve guide mechanism for supporting the sleeve 51 provided with the table top 61 will be described. As described above, the sleeve portion 51 is arranged so as to be connected to the front side of the one side portion 41. However, the sleeve portion 51 is not fixed to the seat portion 20 like the side portion 41, and is displaced along with the reclining operation. Supported as possible. That is, the sleeve 51 has a rear end (specifically, an upper rear end of the sleeve frame 52) on the upper surface thereof hinged to a front end of the armrest 40 (specifically, an upper front end of the side frame 42). It is connected via 54 so that rotation is possible.

  Therefore, the entire sleeve portion 51 can be tilted in the vertical direction with the hinge 54 that is the connection portion with the side portion 41 as the rotation center. In addition, the sleeve 51 is supported by a sleeve guide mechanism so that the other portions other than the connecting portion can be displaced. Here, the sleeve portion guide mechanism includes a guide groove 77 provided at a front position of the side plate 13 of the base frame 11 and a fitting portion 78 provided in the sleeve portion 51 corresponding thereto. The guide groove 77 does not necessarily have a shape that extends in an arc shape, but is set to have a shape that guides the extension portion 50 to follow while maintaining the substantially horizontal state in accordance with the movement of the armrest 40 by the reclining operation described above. .

  The fitting portion 78 is provided so as to protrude from the lower rear end of the sleeve frame 52 to the inside overlapping the side plate 13. The fitting portion 78 is a synthetic resin roller that is movably fitted and guided in the guide groove 77, has an outer diameter slightly smaller than the width dimension of the guide groove 77, and does not fall out of the guide groove 77. Molded to thickness. The fitting portion 78 is not limited to a roller pivotally supported in the same manner as the fitting portion 76, but may be a non-rotatable fixed member or may be configured as a slider instead of the roller.

  Due to the connection between the sleeve guide mechanism and the armrest 40 via the hinge 54, the sleeve 51 as a whole is in relation to the front end of the armrest 40 regardless of the change in the inclination of the seat 20 or the armrest 40 due to the reclining operation. The extension 50 is maintained in a substantially horizontal state while rotating. As a result, the table top 61 provided on the sleeve 51 is also kept in a substantially horizontal upper surface in conjunction with the reclining operation when used in the forward direction of the seated person, and the distance from the seated person Is also kept constant. Here, the edge of the table top 61 facing the seated person moves with respect to the front end of the armrest 40 in a side view of the seat 10 along a trajectory during the reclining operation of the front end.

  Although not shown, the seat 20 and the backrest 30 are restored from the arbitrary inclination angle to the upright position that stands up most forward in the base frame 11, and the restoration is performed at an arbitrary position. A damper comprising a gas spring or the like, which is a power source that can be locked, is provided. Such a damper includes a lock mechanism, and is configured such that the seat portion 20 and the backrest 30 can be locked at an arbitrary inclination angle by the lock mechanism.

  Note that an operation unit for releasing the lock by the lock mechanism may be provided at an appropriate position of the side portion 41, for example. When the lock is released by such an operation unit, it becomes possible to put the weight on the backrest 30 against the restoring force from the damper and push it, and any position up to the reclining posture in which the backrest 30 is inclined most backward. Can be tilted.

  Further, as shown in FIGS. 2 and 9, a legrest 80 may be provided below the front end of the seat portion 20. The legrest 80 is supported so as to be movable between a storage position that hangs downward via a drive mechanism and a footrest position that extends forward. The legrest 80 is supported by the retracted position when the seat portion 20 is in the upright position by linking the drive mechanism to the reclining operation, while the seat portion 20 is inclined to the reclining posture. You may comprise so that it may move to a footrest position.

Next, the operation of the seat 10 according to the present embodiment will be described.
As shown in FIG. 3, there is a sleeve portion 51 in front of the armrest 40 near the center of the seat of each seat portion 20, and the upper surface side of the sleeve portion 51 is an extension portion 50 that continues to the front of the armrest 40, A seated person can put his arms on a wider area. A vertical groove 53 for accommodating the table top 61 is formed on the inner surface of the sleeve portion 51. When the table is not used, the table top 61 is folded in the vertical groove 53 as shown in FIG. It is stored in a standing position.

As described above, when the table top 61 is stored in the vertical groove 53, the one end side 62 facing upward of the table top 61 is exposed from the opening 53 a at the upper end of the vertical groove 53, and the presence thereof is present. Can be easily seen from the outside.
When using a table, the table top 61 may be pulled upward from the longitudinal groove 53 from the one end side 62 as it is. Since there is a handle 62 a formed in a concave groove shape along the edge on the back surface side of the one end side 62, the seated person can easily grasp the one end side 62 and can easily pull it out from the vertical groove 53.

  As shown in FIG. 6, when using only the small unit 61a on the one end side 62 side of the table top 61, it is pulled out from the opening 53a of the vertical groove 53 to the hinge 61c. The pulled-out unit 61a is tilted sideways with the hinge 61c as a rotation center, and is supported in a substantially horizontal use state. Since the hinge 61c has an angle holding portion, the unit 61a is in a horizontal state by restricting the rotation to a predetermined angle slightly larger than a right angle with respect to the other unit 61b still remaining in the vertical groove 53. Retained. In addition, the hollow which hold | maintains a cup etc. is provided in the surface side of the unit 61a.

  As shown in FIG. 7, when the entire table top 61 is used, not only one unit 61 a but also the other unit 61 b is pulled out from the vertical groove 53 as it is, and the stopper 64 staying in the vertical groove 53 is rotated. Tilt to the side as the center. Here, since the hinge serving also as the stopper 64 has an angle holding portion similar to the hinge 61c, the pulled-out unit 61b is slightly larger than the right angle with respect to the other end side 63 still remaining in the vertical groove 53. The horizontal state is maintained by restricting the rotation to a predetermined angle.

  The angle holding portion of the hinge 61c restricts the units 61a and 61b to 180 degrees in the direction in which the units 61a and 61b open, but restricts the predetermined angle in the direction in which the units 61a and 61b close to each other. Therefore, a separate means for restricting the units 61a and 61b from being closed from a state of being connected to each other at 180 degrees is also required. Specifically, for example, at least a part of the unit 61a that is the outermost end is placed on the armrest 40 on the opposite side of the seat portion 20 or its accessories, or the angle holding portion of the hinge 61c itself. Apart from this, a well-known locking means or the like that can be selectively restricted even when the units 61a and 61b are not closed from 180 degrees is provided.

  As described above, the table top 61 can basically be held in a state where the upper surface is substantially horizontal by a series of operations that are simply pulled out from the vertical groove 53 and tilted. Further, when the table top 61 is stored, it can be returned to the longitudinal groove 53 by the reverse operation. The table top 61 can be handled by such a simple operation, and it is not necessary to open and close the cover and the folded and overlapped table like a conventional armrest, and the fingers are pinched when opening and closing the folded table. There is no fear and safety is improved.

  In particular, the longitudinal groove 53 is open on the inner side surface of the sleeve portion 51 and is in a position where it can be easily seen by a seated person, and can be confirmed even more easily. Further, the longitudinal groove 53 extends from the opening 53a so as to be inclined obliquely downward in the sleeve portion 51 toward the side. Thereby, compared with the case where the table top 61 is taken in / out in the vertical direction, the burden of the pulling operation is reduced, and the dropping speed when returning is also reduced. Further, when the table top 61 is divided into a plurality of units 61a and 61b in the both side directions as in the present embodiment, it can be used by being pulled out from the vertical groove 53 in units of units 61a and 61b. it can.

Next, the reclining operation of the entire seat 10 will be described.
The seat 10 can perform a reclining operation in which the seat portion 20 and the backrest 30 are interlocked with each other, and the seated person appropriately adjusts to a desired posture between the upright posture shown in FIG. 1 or the reclining posture shown in FIG. be able to. When a seated person unlocks the lock mechanism and puts weight on the rear side of the seat 10, the postures of the seat portion 20 and the backrest 30 change against the restoring force of the damper.

  Here, the movement of the seat portion 20 is regulated by the seat portion guide mechanism. That is, the fitting portions 73 and 74 in the seat portion 20 are guided while sliding in the guide grooves 71 and 72 in the side plate 13. The movement of the backrest 30 is regulated by the backrest guide mechanism. That is, the fitting portion 76 in the backrest 30 is guided while sliding in the guide groove 75 in the side plate 13.

  In the upright posture shown in FIG. 1, the fitting portions 73 and 74 are located at the upper ends of the guide grooves 71 and 72, and the fitting portions 76 are located at the upper ends of the guide grooves 75. When the reclining posture shown in FIG. 4 is reached, the fitting portions 73 and 74 move to the lower ends of the guide grooves 71 and 72, and the fitting portions 76 also move to the lower ends of the guide grooves 75.

  By such a seat portion guide mechanism, the seat portion 20 rotates about the rotation center P shown in FIG. As a result, the seat portion 20 is displaced so that the rear end side recedes more greatly than the front end side. Here, the rotation center P is assumed to be in front of and below the seat portion 20, that is, in the vicinity of the ankle of the seated person, and obtain a sufficient inclination angle while minimizing the backrest 30 from falling backward. be able to.

  Further, the backrest 30 is lowered while tilting backward together with the rear end side of the seat portion 20 by the backrest guide mechanism. In addition, the backrest 30 tilts backward in a predetermined angle range with respect to the seat 20 itself with the pivot 33 of the support bracket 32 as the center of rotation. The angle range here may be set to a range that can maintain each type of prototype (for example, “Ergonomics of Interior”, Sansei Publishing Co., Ltd., etc.) that is indispensable when designing a chair.

  According to such a reclining operation, it is possible to surely prevent the bottom displacement phenomenon and the back displacement phenomenon, to eliminate fatigue and discomfort caused by these phenomena, and to obtain a more comfortable sitting comfort. . Moreover, the backrest 30 can always be maintained at an ideal angle with respect to the seat portion 20 in accordance with the displacement of the seat portion 20 at any position before, after or during the reclining.

  Next, the displacement of the sleeve 51 or the table top 61 accompanying the reclining operation of the seat 10 will be described. Since the armrest 40 is integrally attached to the seat portion 20, the relative position of the armrest 40 with respect to the seat portion 20 is not changed by the reclining operation, but the extension portion 50 of the armrest 40 is changed. That is, the sleeve 51 including the extension 50 is always kept in a substantially horizontal state by the sleeve guide mechanism even when the armrest 40 is tilted according to the reclining operation.

  As shown in FIG. 8, the sleeve 51 tilts vertically with respect to the front end of the armrest 40 to which the rear end of the extension 50 is connected, with the hinge 54 as the center of rotation. At this time, the fitting portion 78 at the lower rear end of the sleeve portion 51 slides in the guide groove 77 in the side plate 13 so as to keep the extension portion 50 on the upper surface side of the sleeve portion 51 in a substantially horizontal state. While being guided.

  In the upright posture shown in FIG. 1, the fitting portion 78 is located at the upper end of the guide groove 77, but when the reclining posture shown in FIG. 4 is reached, the fitting portion 78 moves to the lower end of the guide groove 77. Here, the guide groove 77 extends along a trajectory of movement that interlocks with the reclining operation of the fitting portion 78, and the fitting portion 78 is guided along the guide groove 77.

  By such a sleeve guide mechanism, the upper portion 50 of the sleeve 51 is maintained in a substantially horizontal state regardless of the reclining operation. As a result, the table top 61 in use is also maintained in a substantially horizontal state in front of the seated person, and the distance from the seated person is also kept constant. Accordingly, the relative positional relationship between the table top 61 and the seated person does not change to a state that is difficult to use such as being separated or tilted with the reclining operation, and the seated person can always use the table comfortably. it can.

  Here, the “substantially horizontal state” does not mean only the horizontal level in a strict sense, but it is sufficient to be able to visually recognize the horizontal level. Further, “the distance to the seated person is also constant” does not mean only a constant in a strict sense, but is sufficient to recognize that there is almost no change as the subjectivity of the seated person.

  The sleeve portion guide mechanism, the seat portion guide mechanism, and the backrest guide mechanism as described above can be easily configured by using the side plate 13 of the base frame 11. In the present embodiment, the fitting portion 78 is provided in the sleeve portion frame 52 of the sleeve portion 51, and the guide groove 77 in which the fitting portion 78 is slidably guided is provided in the base frame 11. As an aspect, the guide groove 77 may be provided in the sleeve frame 52 and the fitting portion 78 may be provided in the base frame 11. However, the base frame 11 can secure a larger arrangement space for the guide groove 77. The same applies to the relationship between the guide grooves 71, 72, 75 and the fitting portions 73, 74, 76 of the seat guide mechanism and the backrest guide mechanism.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and the present invention may be modified or added without departing from the scope of the present invention. Included in the invention. For example, the illustrated shape of the seat portion 20 and the backrest 30, the inclination angle, and the like are examples, and are not limited thereto. In the present embodiment, a seat for two people has been described as an example, but a seat for one or three people may be used. Moreover, the seat is not limited to a railcar seat.

  Further, in the above-described embodiment, the backrest 30 is supported to be tiltable to some extent with respect to the seat portion 20, but may be supported integrally at a predetermined tilt angle. In this case, the reclining operation is performed in a state in which the back angle of the seat portion 20 is maintained at a constant angle, and the rear end side of the seat portion 20 is retreated and descends more than the front end side. With the movement, the backrest 30 also descends while tilting backward.

  Further, although not shown in the drawings, the one end side 62 of the table top 61 is the seat 10 on the side opposite to the side on which the table top 61 is stored when the table top 61 is tilted so that the upper surface thereof is substantially horizontal. You may comprise so that it may be supported on the armrest 40 provided in the side. As a result, the table top 61 is supported not only on the angle holding portion on the one end side 62 but also on the other end side 63 in a substantially horizontal state, and the other end side 63 that is the free end is rattled. In addition, the stability is increased and even a heavy object can be placed.

  Specifically, for example, the length of the armrest 40 on the opposite side to the front is extended so that one end side 62 of the table top 61 overlaps, or the support piece is projected and retracted from the front end of the armrest 40 on the opposite side. It is also conceivable to configure this.

  The present invention can be widely used particularly for vehicle seats or general chairs installed in passenger cabins such as railway vehicles, airplanes, and automobile ships.

DESCRIPTION OF SYMBOLS 10 ... Seat 11 ... Base frame 12 ... Base 13 ... Side plate 14 ... Shaft 20 ... Seat part 30 ... Backrest 31 ... Backrest frame 32 ... Support bracket 33 ... Axis 40 ... Armrest 41 ... Side part 42 ... Side part frame 50 ... Extension part 51 ... Sleeve part 52 ... Sleeve part frame 53 ... Vertical groove 54 ... Hinge 60 ... Seat table 60a ... Seat table device 61 ... Table top 61a ... Unit 61b ... Unit 61c ... Hinge 62 ... One end side 62a ... Handle 63 ... Other end side 64 ... Stopper 71 ... Guide groove 72 ... Guide groove 73 ... Fitting portion 74 ... Fitting portion 75 ... Guide groove 76 ... Fitting portion 77 ... Guide groove 78 ... Fitting portion

Claims (8)

In a table apparatus for a seat having a table top that is stored on the side of the seat and that is deployed forward of the seated person when in use,
The seat is capable of a reclining operation in which the seat portion and the backrest supported on the rear end side are interlocked with each other,
On the side of the seat, an armrest that is directly linked to the reclining operation of the seat is provided integrally.
A sleeve portion whose upper surface side forms an extension portion of the armrest is provided at a position continuous to the front of the armrest on the side of the seat portion, and the sleeve portion covers the side on the front end side of the seat portion. Arranged,
The sleeve has a rear end on the upper surface side connected to the front end of the armrest so as to be rotatable, and the entire sleeve is supported so as to be tiltable in the vertical direction with the connecting portion as a rotation center. Provided with a sleeve guide mechanism that supports other parts of the sleeve so as to be displaceable,
Regardless of the change in the inclination of the seat portion or the armrest by the reclining operation, the sleeve portion is supported in a substantially horizontal state while the sleeve portion rotates with respect to the front end of the armrest,
The table top is provided in the sleeve portion and retracted to the inside of the sleeve portion, and is pulled out to the outside of the sleeve portion. A table device for a seat, which is displaceable depending on a use state to be developed . The seat and the backrest are supported on a base frame;
The sleeve guide mechanism is provided on one of the sleeve frame and the base frame constituting the sleeve, and extends along a trajectory of movement linked to the reclining operation of the other part of the sleeve. The seat table device according to claim 1 , further comprising: a fitting portion that is provided on either side and is slidably guided by being fitted in the guide groove. In the sleeve portion, forming a vertical groove for storing the table top in an upright state,
The table top is pulled upward from the vertical groove from one side end exposed from the opening of the vertical groove, and is tilted sideways around the other side end still remaining in the vertical groove as the use state. seat table apparatus according to claim 1 or 2, characterized in that it is supported. The longitudinal groove is formed so as to open narrowly on the inner side surface of the sleeve portion, and to extend obliquely downward from the opening inside the sleeve portion,
The seat table device according to claim 3 , wherein the table top is housed in the vertical groove in a state where the table top is inclined along the inclination of the vertical groove. 4. The handle according to claim 3 , wherein a handle is provided on one end side of the table top so as to be exposed from an opening of the vertical groove when the table top is stored in the vertical groove and a seated person puts a finger on. 4. A table device for a seat according to 4 . The other end side of the table top is provided with a stopper for retaining to remain inside the opening of the vertical groove when being pulled out from the vertical groove, and the stopper serves as a rotation center. The table device for a seat according to 3 , 4 or 5 . Said stopper, when said table top is top is tilted in a substantially horizontal state, a seat according to claim 6, characterized in that the angle holding portion for holding to the rotation angle is provided Table device. The table top is divided into a plurality of units on both sides, and the units are connected to each other via hinges so that they can be bent. It can be drawn on the same plane and drawn out from the vertical groove in units.
While the unit pulled out from the opening of the vertical groove is still bent at a predetermined angle with respect to the unit in the vertical groove at the hinge between the units, the unit is held in a substantially horizontal state. claim 3 is pulled out to adjacent units, characterized in that the angle holding portion for holding the state connected to each other by 180 degrees are provided, 4, 5, seat table device according to 6 or 7.

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