JP2004122984A - Seat for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat for a vehicle provided with a table on which a deep object can be placed stably, and which is not too close to a user and is easy to use, and the seat for the vehicle provided with the table which is not too close to the user and is easy to use. <P>SOLUTION: The table of the seat for the vehicle provided on a back surface side of a backrest is made closer to a back surface of the backrest approximately in parallel and is housed at a time of housing, and is supported so that an entire table is rotated until approximately leveled out without separating a front end from the back surface of the backrest in use. Furthermore, a recessed part provided with an expanded table surface at an approximately same level with a table surface 1 of the table in use is formed on the back surface of the backrest, and a depth of the table is expanded by approximately connecting the table surface and the expanded table surface in use. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle seat installed in various vehicles such as buses, railway vehicles, aircrafts, ships and the like.
[0002]
[Prior art]
As shown in FIG. 16, in many conventional vehicle seats 80, the table 82 provided on the back side of the backrest 81 is stored close to the back surface of the backrest 81 in a substantially parallel manner when used. Sometimes, the front end is separated from the back of the back rest 81 (some are not separated) and is supported so as to be rotated until the whole becomes substantially horizontal. (For example, see Patent Document 1, Patent Document 2, Patent Document 3, and Patent Document 4) The center 83 of the rotation is near the front end of the table 82 (the distance from the center 83 of the rotation to the front end of the table 82 is several cm at most. Therefore, most of the depth of the table 82 is determined from the center 83 of the rotation to the front end of the table 82.
[0003]
[Patent Document 1]
No. 6-9893
[Patent Document 2]
Registered Utility Model No. 2547750
[Patent Document 3]
Japanese Utility Model Publication No. 63-28675
[Patent Document 4]
JP-A-6-32166
[Patent Document 5]
Japanese Utility Model Publication No. 58-58949
[0004]
[Problems to be solved by the invention]
(1) The table 82 is used to place various items such as lunch boxes, beverage containers, books, documents, and notebook computers. However, with regard to the dimensions of the conventional table 82, with regard to the width, the depth is limited by the restrictions due to the relationship between the distance between the front and rear seats and the table support mechanism, and the design limitations of the backrest that stores the table. There was a problem that it was difficult to take large. For this reason, when an object having a large depth is placed, the depth of the table 82 is insufficient, and the placed object may become unstable.
[0005]
By the way, as shown in FIG. 17A-1 for the state during use and FIG. 17A-2 for the state during storage, the table 82 is divided into a front half 82a and a rear half 82b for storage. In some cases, both the 82a and 82b are pivotally attached so that the latter overlaps the former and when the latter is used, the latter expands flush with the former (see, for example, Patent Document 1). However, this folding structure is intended to make the table at the time of storage compact and to avoid the design limitation of the backrest that stores the table described above, and extends the depth of the table 82 when it is unfolded. It is not intended to solve the above problem. However, the present inventor thought that the depth of the table 82 when unfolded can be expanded by slightly increasing the depths of the first half 82a and the second half 82b. It was not adopted because it was too close and the following problem (2) occurred.
[0006]
In addition, since some of the present invention has a recess on the back of the backrest as a constituent element, if you touch on the related art related to the recess just in case, it is known that a recess is provided on the back of the backrest in the past. (For example, see Patent Document 5). However, the conventional concave portion is a concave portion for storing small items exclusively and exists independently of the table. Therefore, such prior art is irrelevant to the present invention.
[0007]
(2) As described above, not only the table 82 is rotated substantially horizontally during use, but also the front end of the table 82 is separated from the back surface of the backrest 81 so that the table 82 is close to the user for easy use. It is to do. Further, as shown in FIG. 17 (b-1) for the non-sliding state and FIG. 17 (b-2) for the sliding state, the table 82 in use is rearward from the reference position immediately after the rotation. Some of them slide to a position to bring the table 82 closer to the user (for example, see Patent Document 2).
[0008]
However, when the pitch between the front and rear seats is small as represented by the economy class of aircraft, or when the user's physique is large, the table 82 is too close to the user as described above. On the other hand, it has been found that it may be difficult to use.
[0009]
SUMMARY OF THE INVENTION Accordingly, a first object of the present invention is to provide a vehicle seat having a table that can stably place an object having a large depth and is easy to use without being too close to the user. A second object of the present invention is to provide a vehicle seat including a table that is easy to use without being too close to the user.
[0010]
[Means for Solving the Problems]
(1) The table provided on the back side of the backrest is stored close to the back surface of the backrest in a substantially parallel manner during storage, and the front end is not separated from the back surface of the backrest when used, and is generally horizontal as a whole. In the vehicle seat supported so as to be pivoted to the back, an expansion recess having an extension table surface extending substantially horizontally at substantially the same height level as the table surface of the table in use is formed on the back surface of the backrest. A vehicle seat characterized in that the depth of the table can be expanded by making the extended table surface substantially continuous with the table surface in use.
[0011]
In the means (1), the extension table surface is substantially horizontal because the table surface in use is horizontal. If the back is not reclining, the extension table surface may be formed horizontally. If the back cover is to be reclined, the angle of the expansion table surface also changes with the reclining angle, so the expansion table surface can be moved to one point within the reclination angle range (for example, an unreclined point, a reclining midpoint or It may be formed so as to be horizontal at the maximum reclining point) and to be substantially horizontal with some angle at other points within the same angle range.
[0012]
The depth of the expansion table surface is not particularly limited, but is preferably about 1/3 to 9/10 of the backrest thickness. It is because it is thought that it is the effective depth which can be taken, leaving the room which provides a cushioning material in the front side of a back cover. The width of the extended table surface is not particularly limited, but is preferably equal to or greater than the width of the table, and the upper limit is naturally limited by the width of the backrest. The height of the recess for expansion is not particularly limited. For example, in order to allow a lunch box, a book, a notebook computer, etc. to enter, it is preferably 50 mm or more (at the lowest part when the height changes), and is preferably 100 mm or more. Further preferred. Moreover, it is preferable that the height of the expansion recess is changed higher in the opening than in the deep portion. Further, it is preferable that the expansion recess is closed by a table when stored, and in that case, the upper limit of the height of the expansion recess is naturally limited by the depth of the table.
[0013]
(2) When the table provided on the back side of the backrest is stored, it is stored close to the back surface of the backrest in a substantially parallel manner, and when used, the front end is not separated from or separated from the back surface of the backrest. In a vehicle seat supported so as to be rotated until it becomes substantially horizontal, the table depth can be expanded by providing an extension table surface extending substantially horizontally from the center of rotation to the front end of the table when in use. A vehicle seat characterized in that the depth from the center to the front end of the extension table surface is at least 1/4 times the depth from the rear end to the center of the table.
[0014]
Even in the conventional example, a few centimeters protrudes forward from the center of rotation, but this is a problem in the arrangement of the shafts and is not intended to extend the table. In the present invention, in order to substantially expand the table, the lower limit of the depth of the expansion table surface is set to “at least 1/4 times”. On the other hand, the upper limit of the depth of the extension table surface is not particularly limited when there is a means for preventing the rear end of the table from popping up. When there is no means to prevent the back end of the table from rising, it is limited by the distance to the back rest or the distance to the relief recess provided on the back rest. The rear end of the table will spring up, so make it less than 1 time. Further, even when the object is less than 1 time, when the object is placed on the side of the extension table, the front end of the extension table is similarly lowered.
The extension table surface in the means (2) can be roughly divided into the following modes (a) and (b).
[0015]
(A) A mode in which the extension table surface is an upper surface of a table extension part formed integrally with the table. The table and the table extension portion may be integrally formed so as to be continuous with the same material, or may be integrated with those formed of the same material or different materials.
[0016]
(B) A mode in which the extension table surface is an upper surface of the extension table formed and connected separately from the table. Although the method of connection is not particularly limited, the following modes (1) and (2) can be exemplified.
(1) A mode in which the extension table is connected to the table so as to be rotatable between an extended position where the extension table surface and the table surface are flush with each other and a non-expanded position where the table surface is not flush with each other. The mode of rotation is not particularly limited, but the extension table rotates with respect to the table between the extension table surface and the table surface being flush with each other and the extension table surface being not flush with the table surface. The mode to do can be illustrated.
(2) A mode in which the extended table is slidably connected to the table between an extended position drawn from the table and a non-expanded position overlapping the table.
The way of overlapping is not particularly limited, but examples include an aspect in which the extension table is retracted under the table, an aspect in which the extension table is placed on the table, and an aspect in which the extension table enters the hollow table.
[0017]
Further, in the same means (2), at least the front end portion of the table extension portion or the extension table at the time of use can be configured to enter the relief recess formed on the back surface of the backrest. This configuration is for preventing interference between the back surface of the backrest and the table extension portion or the front end of the extension table when the backrest is reclining. Moreover, it can also comprise so that substantially the whole expansion table at the time of accommodation may enter in the escape recessed part formed in the back surface of a backrest.
[0018]
The size and shape of the recess for relief are not particularly limited. When the back rest is to be reclined, consideration is given so that the reclining back rest and the table extension portion or the extension table do not interfere with each other. The height of the escape recess can be considered in the same manner as the extension recess.
[0019]
(3) When the table provided on the back side of the backrest is stored in close proximity to the back surface of the backrest during storage, until the front end is separated from the back surface of the backrest and is generally horizontal when in use In a vehicle seat supported to be rotated, the table position is kept away from the user by supporting the table in use in a slidable manner between a reference position immediately after the rotation and a position away from it. A vehicle seat characterized by being made to be able to.
[0020]
In the same means (3), although not particularly limited, the table can be adjusted to an arbitrary distance position by providing a plurality of distance positions in the front-rear direction or in a stepless manner.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the object seat of the present invention will be described from the first embodiment to the sixth embodiment based on the drawings. In addition, the quantity described in the embodiment is an example, and can be changed as appropriate. [First embodiment]
1 to 3 show a first embodiment in which the present invention is embodied in a bus seat 1. As an example, a bus seat 1 for two seats includes a seat frame 4 supported by the front legs 2 and the rear legs 3, a seat portion 5 provided by installing a cushion material or the like on the seat frame 4, and a seat frame. 4 has a basic configuration including a backrest 6 supported so as to be able to recline about 20 ° and an armrest 7 supported on the seat frame 4, for example.
[0022]
In the present embodiment, a table device 10 is attached to the back side of the backrest 6. The table device 10 includes a pair of support arms 11 that are rotatably coupled to the seat frame 4 at a lower portion of the backrest 6, and a pair of support members 12 that are attached to the respective side portions above the backrest 6. And a table 13 (width 380 mm, depth 180 mm, thickness 30 mm) supported between the tips of the support arm 11 and the support member 12. In this table 13, a rotating shaft 8 that protrudes outward from both side surfaces of the table 13 is pivotally supported at the tip of the support arm 11, and a support shaft 9 that is juxtaposed in front of the rotating shaft 8 is at the tip of the support member 12. It is supported by being pivotally supported. The support arm 11 performs adjustment for keeping the table surface 15 horizontal by reclining the bus seat 1, and the rotary shaft 8 functions as an axis for performing the adjustment. The support member 12 supports the front end 13a of the table 13 so as to be close to the back side of the backrest 6, and the support shaft 9 serves as a shaft for rotating during storage.
Thus, when the table 13 is stored (the aspect of the table 13 of the right bus seat 1 in FIG. 1) by the rotary shaft 8 and the support shaft 9, the table 13 is close to the back surface of the backrest 6 substantially in parallel. And stored. At this time, the table 13 is held in the storage position by a rotary operation type latch 14 attached to a substantially central portion of the upper part of the back of the backrest 6. Further, when the table 13 is used (an aspect of the table 13 of the left bus seat 1 in FIG. 1), the front end 13a of the table 13 does not move away from the back surface of the backrest 6 until the whole is substantially horizontal. Supported to move.
[0023]
An expansion recess 16 (width 280 mm, depth 40 mm, height 120 mm) is formed on the back surface of the backrest 6. The extension recess 16 includes an extension table surface 17 that is substantially level at the same level as the table surface 15 of the table 13 in use, and the extension table surface 17 is substantially continuous with the table surface 15 in use. The table depth can be expanded. In the present embodiment, the reclining angle of the bus seat 1 is, for example, within 20 °. Therefore, when the bus seat 1 is in the reclining midpoint (10 °), the expansion table surface 17 is horizontal as the table surface 15 is. An extension table surface 17 is formed so as to be. Therefore, as shown in FIG. 2A, the angle of the extension table surface 17 with respect to the table surface 15 at the unreclined point of the bus seat 1 is −10 °. As shown in FIG. 2B, the angle of the extension table surface 17 at the maximum reclining point (20 °) of the bus seat 1 is + 10 °. As described above, even when the bus seat 1 is reclined, the angle of the extension table surface 17 with respect to the table surface 15 is kept substantially horizontal.
Further, as shown in FIG. 3, the expansion recess 16 is closed by the table 13 when the table 13 is housed in close proximity to the back surface of the backrest 6.
[0024]
According to the bus seat 1 of the first embodiment configured as described above, by forming the expansion recess 16, the depth of the table can be expanded without expanding the table itself. The table 13 can be placed stably and easy to use.
[0025]
[Second Embodiment]
The bus seat 18 of the second embodiment of the present invention shown in FIGS. 4 to 7 is mainly different from the first embodiment in that an expansion table 22 formed separately from the table 13 is provided.
In addition, the relief recess 20 (width 280 mm, depth 60 mm, depth 60 mm, depth 60 mm, depth) is provided on the back of the backrest 6 so that substantially the entire expansion table 22 (width 270 mm, depth 70 mm) during use and storage can be substantially horizontal. 120 mm in height), which functions differently from the expansion recess 16 of the bus seat 1 of the first embodiment.
[0026]
The rotary shaft 19 and the support shaft 26 that support the table 13 are each a single shaft that penetrates through the table 13, protrudes from both side surfaces of the table 13, and supports the support arm 11 and the support member 12. Although it is pivotally supported between the front ends so as to be rotatable, the operation for the table 13 is the same as that of the first embodiment.
[0027]
An extension table surface 24 is provided on the upper surface of the extension table 22, and the table depth can be expanded by being connected to the table 13. As shown in FIGS. 4B and 5, the extension table 22 side of the connecting portion includes a pair of projecting portions 25 extending from both sides of the extension table 22 behind the extension table 22. The pair of protrusions 25 are provided with holes 27. A pair of escape grooves 28 are provided on the table 13 side of the connecting portion so that the support shaft 26 is exposed at the front end of the table 13. The support shaft 26 is rotatably passed through the hole 27, the protrusion 25 is fitted into the escape groove 28, and the support shaft 26 is rotatably passed through the hole 27 and connected to the table 13. The rotation of the extension table 22 around the support shaft 26 is performed between when the table 13 is used and when it is stored.
Due to the connection between the extension table 22 and the table 13, the extension table 22 extends substantially horizontally to the front end 13 a side of the table 13 in use and in front of the support shaft 26 as the center of rotation.
[0028]
When the table 13 and the extension table 22 are used, as shown in FIG. 6A, the extension table 22 is locked to the rotation stop portion 29 provided on the table 13, and the extension table surface 24 and the table surface 15 are retained. Is a position at the time of expansion which is substantially horizontal, and substantially the entire expansion table 22 enters the recess 20 for escape. As shown in FIG. 6B, the shape of the bottom surface 21 of the relief recess 20 is such that the expansion table surface 24 is substantially horizontal like the table surface 15 at the maximum reclining point (about 20 °) of the bus seat 18. In this case, it is necessary to prevent the bottom surface 21 of the escape recess 20 from interfering with the extension table 22. Therefore, the angle connecting the back portion of the bottom surface 21 and the mouth portion 23 is substantially horizontal at the maximum reclining point of the bus seat 18, and is about −20 ° at the non-reclining point.
When the table 13 and the extension table 22 are stored, as shown in FIG. 7, the extension table 22 enters the escape recess 20 while being substantially horizontal, and only the table 13 is substantially parallel to the back surface of the backrest 6. In close proximity, the extended table surface 24 and the table surface 15 are held in a non-expanded position at which the extended table surface 24 and the table surface 15 are not flush with each other. At this time, the opening on the back side of the relief recess 20 is closed by the table 13. Moreover, since the protrusion 25 of the extension table 22 enters the escape groove 28, the rotation of the extension table 22 relative to the table 13 is not interfered.
[0029]
The depth of the table 13 is 180 mm, and since the distance from the rear end of the table 13 to the center of the support shaft 26 is about 170 mm, the distance from the center of the support shaft 26 to the front end 13a of the table 13 is about 10 mm. Since the depth of the extension table 22 is 70 mm, with respect to the depth (about 170 mm) from the rear end of the table 13 to the center of the support shaft 26, from the center of the support shaft 26 to the front end 13 a of the table 13 (about 10 mm). And the depth (70 mm) from the center of the support shaft 26 including the depth of the extension table 22 to the front end of the extension table surface 24 (about 80 mm) is about ½ times.
[0030]
According to the bus seat 18 of the second embodiment configured as described above, the table becomes an extended table depth when used, and objects with a large depth can be stably placed, and are too close to the user. It can be set as the bus seat 18 provided with the table which is easy to use. Furthermore, since the escape recess 20 into which almost the entire extension table 22 can enter is formed, the extension table 22 does not overlap the table 13 and can be stored non-planarly at an angle, From the back, it can be stored in the same state as when only the conventional table 13 is stored.
[0031]
Next, a modified example of the second embodiment is shown in FIG. Unlike the bus seat 18 of the second embodiment, this does not include the support member 12, and when the table 13 is used, the front end 13 a of the table 13 is separated from the back surface of the backrest 6, and the whole is substantially horizontal. It is the seat for buses supported so that it may turn until. In this case, the support shaft 26a does not protrude on both side surfaces of the table 13, and supports the extension table 22 as in the first embodiment. The rotation shaft 19 a is formed at both side ends so as to protrude outward from both side ends, and is pivotally supported by the support arm 11.
[0032]
[Third embodiment]
9 and 10 show a third embodiment in which the present invention is embodied in a vehicle seat for a railway vehicle. In the railway vehicle according to the present embodiment, a plurality of two-seat seats in which two vehicle seats 30 are arranged in parallel are arranged in the longitudinal direction of the railway vehicle. The vehicle seat 30 includes, as an example, a base 31, a seat portion 32 provided with a cushion or the like installed on a rotatable seat frame, a backrest 33 supported so as to be able to recline about 20 °, for example, an armrest 34 and a basic configuration including The base 31 is provided with a motor mechanism for driving the seat 32 around the central axis, a foot pedal 35 for releasing the lock of the seat frame to the base 31, and a footrest 36.
[0033]
In the present embodiment, a table 37 (width 340 mm, depth 190 mm, thickness 20 mm) provided on the back side of the backrest 33 and a table expansion portion 44 (width 340 mm, depth 60 mm, formed integrally with the table 37, And a thickness of 20 mm). The extension table surface 43, which is the upper surface of the table extension portion 44, extends substantially horizontally from the center of the rotation shaft 40 to the front end side of the table 37 in use so that the table depth can be extended.
The integrated table 37 and the table expansion portion 44 are provided with a depth of 160 mm from the rear end of the table 37 to the rotary shaft 40 that bridges between the ends of the pair of support arms 39 supported by the vehicle seat 30. The first embodiment is different from the first embodiment in that the support member 12 that is attached in part and supports the front end of the table so as to be close to the back side of the backrest is not used.
[0034]
The support arm 39 is provided with a rotation guide hole 42 having a substantially side surface. The rotation guide hole 42 is formed to project outward from the rotation shaft 40 of the table 37 from both front end surfaces. The rotation guide member 41 is engaged, and the rotation of the table 37 is guided.
The rotation of the table 37 and the table expansion portion 44 is performed between the use of the table 37 and the storage thereof. In use, the front end 44 a of the table extension 44 is separated from the back surface of the backrest 33, and the rotation guide member 41 is locked to the vehicle seat 30 side, which is one end of the rotation guide hole 42. The extension table surface 43 can be kept substantially horizontal. At the time of storage, the table 37 and the table expansion portion 44 are stored in close proximity to the back surface of the backrest 33, the rotation guide member 41 is locked to the other end of the rotation guide hole 42, and the backrest 33. Is held in the retracted position by a latch 14 attached thereto.
[0035]
Further, when the vehicle seat 30 is in the reclining mode 30a when the table 37 and the table expansion portion 44 are used, a relief recess 45 is formed on the back surface of the backrest 33 so that the front end 44a portion can enter. Has been.
[0036]
The depth of the table 37 is 190 mm, and the distance from the rear end of the table 37 to the center of the rotary shaft 40 is about 160 mm. Therefore, the portion of the table 37 projects forward from the rotary shaft 40 by about 30 mm. Since the depth of the table expansion portion 44 is 60 mm, the protruding portion (about 30 mm) of the table 37 from the center of the rotating shaft 40 with respect to the depth (about 160 mm) from the rear end of the table 37 to the center of the rotating shaft 40. And the depth (about 90 mm) from the center of the rotating shaft 40 to the front end 44a of the table extension portion 44, which is the sum of the depth (60 mm) of the table extension portion 44, is about ½ times.
[0037]
According to the vehicle seat 30 of the third embodiment configured as described above, by providing the table extension portion 44 including the extension table surface 43, the table becomes an extended table depth during use, and an object having a large depth can be obtained. It can be set as the vehicle seat 30 provided with the table which can be set | placed stably and is easy to use without being too close to a user. Further, the relief recess 45 is provided, so that the vehicle seat 30 does not interfere with the front end 44a of the table expansion portion 44 when in use even when the vehicle seat 30 is reclined.
[0038]
The depth from the rear end of the table 37 to the center of the pivot shaft 40, which is the center, is about ½ times the depth from the center of the pivot shaft 40 to the front end of the extension table surface 43. Thus, the front end 44a of the table extension portion 44 is lowered and the rear end of the table 37 is not easily lifted up. Even when an object is placed on the extension table 44 side, it is possible to prevent the front end 44a of the table extension portion 44 from being lowered. A table extension 44 and a table 37 can be used.
[0039]
[Fourth embodiment]
As shown in FIG. 11A, the fourth embodiment differs from the third embodiment embodied in the vehicle seat 30 only in the aspect of the extension table, and a table 37 having the extension table surface 46 as an upper surface. And an expansion table 47 (width 340 mm, depth 60 mm, thickness 20 mm) formed separately.
[0040]
The extension table 47 extends over the extension table surface 46 side and the table surface 38 side so that the extension table 47 can be rotated on the table surface 38 side with respect to the table 37 between use and storage. And are connected using a hinge 48 which is embedded and mounted. When the extension table 47 and the table 37 are used, the extension table surface 46 and the table surface 38 are in an extension position where the table surface 38 is substantially horizontal and flush. When the expansion table 47 and the table 37 are stored, the expansion table surface 46 faces the table surface 38 and is in a non-expanded position where the expansion table 47 and the table surface 38 are not flush with each other. Closely stored. In order to prevent the extension table 47 from rotating carelessly when being stored on the back surface of the backrest 33, it is preferable to provide holding means such as magnets on the extension table surface 46 and the table surface 38. Further, the table 37 of the present embodiment has a step on the table surface 38, but can be used as the table 37 even when the extended table surface 46 overlaps the table surface 38 and is not flush with the table surface 38.
[0041]
[Fifth embodiment]
As shown in FIGS. 11 (b-1) and (b-2), the fifth embodiment differs from the third embodiment embodied in the vehicle seat 30 only in the aspect of the extension table. An extension table 50 (width 340 mm, depth 80 mm, thickness 20 mm) formed separately from the table 37 having the surface 49 as an upper surface is provided.
[0042]
The expansion table 50 is connected to the table 37 so that the expansion table 50 and the table 37 are slidable between use and storage, and face the same direction as the table surface 38 and the expansion table surface 49 is hollow. This is a mode of entering the table 37.
As shown in FIG. 11 (b-1), at the time of use, the expansion table 50 is pulled out from the table 37, and the expansion table surface 49 and the table surface 38 are substantially horizontal and flush with each other. At this time, the groove 51a formed on the side surface inside the table 37 is locked at the front end of the groove 51a by the engaging portion 51b protruding outward from the side surface of the expansion table 50, whereby the expansion table 50 is pulled out. It is not to be too much. As shown in FIG. 11 (b-2), when stored, the expansion table 50 and the table 37 are in a non-expanded position where they overlap and are not flush with each other. It is an aspect of being stored close to each other in parallel.
Further, when the extension table 50 is stored inside the table 37, the locking portion 52 protruding inward of the support arm 39 is provided so that the table extension portion does not pop out when the extension table 50 is stored in the back of the backrest 33. Is preferably provided.
[0043]
According to the vehicle seat 30 of the fourth embodiment and the fifth embodiment configured as described above, in addition to the effects of the third embodiment, the extension tables 47 and 50 are attached, and the extension table surface 46, Despite the expansion of the table depth of 49, it can be stored compactly when stored. Further, the table 37 can be expanded and used only when the expansion of the table 37 is necessary, and can be used in the state of the table 37 when the expansion is not necessary.
[0044]
[Sixth embodiment]
12 to 14 show a sixth embodiment in which the present invention is embodied in an aircraft seat 53. In an aircraft, two or more aircraft seats 53 are arranged in parallel, and a plurality of rows are arranged in the longitudinal direction of the aircraft. The arrangement pitch of the aircraft seats 53 is usually narrow, such as 790 mm to 900 mm, while many of the vehicle seats are 1000 mm or more.
The aircraft seat 53 is installed in a seat frame 56 supported by the front leg 54 and the rear leg 55, and a cushion material or the like is installed on the seat frame 56, regardless of whether it is an economy class, business class or first class seat. It has a basic structure including a seat portion 57 provided, a backrest 58 supported by the seat frame 56 so as to be able to recline about 20 °, and an armrest 59 supported by the seat frame 56, for example. Similarly to the third embodiment, when the aircraft seat 53 reclines when the table 61 is used, a relief recess 45 is formed on the back surface of the backrest 58 so that the front end 61a portion can enter. Yes.
[0045]
In the present embodiment, as in the third embodiment, the table 61 (width 430 mm, depth 240 mm, thickness 20 mm) provided on the back side of the backrest 58 is separated from the back surface of the backrest 58, and a pair The support arms 62 are supported so as to be rotatable between storage and use. When the table 61 is stored (two-dot chain line in FIG. 12), the table 61 is close to the back surface of the backrest 58 substantially in parallel and is locked to a locking portion 63 that protrudes inward of the support arm 62. And is held in the storage position by a latch (not shown) provided on the backrest 58. In use, it is pivotally supported by a pivot shaft 64 so as to be separated from the back surface of the backrest 58 and become substantially horizontal as a whole, and is provided so as to project inwardly at the tip of the support arm 62. The rear end of the table 61 is prevented from being lowered by being locked to the rotation locking portion 69. Further, the table 61 can be moved away from the user by supporting the table 61 in use in a slidable manner between a reference position immediately after the rotation and a distance away from the reference position.
[0046]
Both side end surfaces 65 of the table 61 are provided with guide grooves 66 extending in the length direction of the both side end surfaces 65 and opening toward the both end surfaces 65 and arranged in a cross-sectional shape in which both ends of substantially C are wound inside. ing. The sliding portion 68 of the engaging sliding member 67 attached to the support arm 62 via the rotation shaft 64 and extending along the length direction of the side end surface 65 of the table 61 is not separated from the guide groove 66. Engage slidably.
[0047]
According to the aircraft seat 53 of the sixth embodiment configured as described above, the seat 61 is supported so as to be slidable so that the table 61 can be continuously adjusted to an arbitrary position in the distance direction. Therefore, the vehicle seat can be provided with a table that is easy to use without being too close to the user.
[0048]
Next, a modified example of the sixth embodiment is shown in FIG. This modification is different from the sixth embodiment only in that the table 71 is slidable in 8 steps instead of the stepless slidable table 61 of the aircraft seat 53 of the sixth embodiment.
Both side end faces 72 of the table 71 are provided with guide grooves 73 having a substantially U-shaped cross section that extends in the length direction of the both end faces 72 and opens toward the both end faces 72. The guide groove 73 is provided with eight hemispherical recesses 73a that open toward both side end surfaces 72 substantially equally. The support arm 62 has a hemispherical tip attached to a recess 75 that opens toward the table 71 of an engagement sliding member 74 that is attached via a rotation shaft 64 via a spring 76. A sliding portion 77 is provided. The sliding portion 77 is slidably engaged without being separated from the guide groove 73 by the urging force of the spring 76, and is latched by the recess 73a of the guide groove 73.
[0049]
According to the above modified example, in addition to the effect obtained by the aircraft seat 53 of the sixth embodiment, the table 71 can be adjusted in eight steps in the direction away from the table 71.
[0050]
In addition, this invention is not limited to the said embodiment, For example, it can also be suitably changed and embodied as follows, for example in the range which does not deviate from the meaning of invention.
(1) The bus seat table of the first embodiment is used for a vehicle seat, or the vehicle seat table of the third embodiment is used for a bus seat.
(2) When the table provided with the extension table as in the second embodiment is supported with the front end being spaced apart during use, substantially the entire extension table is formed on the back of the backrest when stored. Enter into the escape recess.
(3) The vehicle seat table to which the expansion table is attached is a table that is slidable away from the vehicle as in the sixth embodiment.
[0051]
【The invention's effect】
As described above in detail, according to the vehicle seat of the first to eighth aspects of the present invention, a table having a large depth can be stably placed, and a table that is easy to use without being too close to the user. There is an excellent effect that the vehicle seat can be provided.
[0052]
According to the vehicle seats of the ninth and tenth aspects of the invention, there is an excellent effect that the vehicle seat can be provided with a table that is easy to use without being too close to the user.
[Brief description of the drawings]
FIG. 1 is a perspective view of a bus seat according to a first embodiment of the present invention.
FIG. 2A is a cross-sectional view of a bus seat according to the embodiment (a) a non-reclined mode, and FIG. 2B is a cross-sectional view of a reclining mode.
FIG. 3 is a cross-sectional view of a state in which a bus seat table according to the embodiment is stored.
4A is a perspective view of a bus seat according to a second embodiment of the present invention, and FIG. 4B is a perspective view of an extension table.
FIG. 5 is a plan view of an extension table and a table of a bus seat according to the embodiment.
6A is a cross-sectional view of a mode in which the bus seat according to the embodiment is not reclining, and FIG. 6B is a cross-sectional view of a mode in which the reclining is performed.
FIG. 7 is a cross-sectional view showing a state in which the table of the bus seat according to the embodiment is housed.
FIG. 8 is a plan view of an extension table of a bus seat according to the embodiment and a modified example of the table.
FIG. 9 is a perspective view of a vehicle seat according to a third embodiment of the present invention.
FIG. 10 is a side view of the vehicle seat according to the embodiment.
11A is a partial side view of a vehicle seat according to a fourth embodiment of the present invention, FIG. 11B is a table expanded according to the fifth embodiment, and FIG. 11B is a fifth embodiment. FIG. 5 is a partial side view of the vehicle seat when the table is not expanded.
FIG. 12 is a side view of an aircraft seat according to a sixth embodiment of the present invention.
FIG. 13 is a perspective view of an aircraft seat table according to the embodiment.
FIG. 14 is an enlarged partial perspective view of an aircraft seat table according to the embodiment;
FIG. 15A is a partial cross-sectional perspective view of a modified example of the aircraft seat table according to the embodiment, and FIG. 15B is a partial cross-sectional view thereof.
FIG. 16 is a side view of an aircraft seat according to a conventional example of the present invention.
17A is a side view of an aircraft seat table according to a conventional example of the present invention, FIG. 17A is a side view when extended, FIG. 17A is a side view when not expanded, and FIG. 17B is a side view when expanded. (B-2) It is a side view at the time of non-expansion.
[Explanation of symbols]
1 Bus seat
6, 33, 58 Back cover
9, 26, 26a Support shaft
10 Table device
11, 39, 62 Support arm
12 Support members
13, 37, 61, 71 tables
15, 38 Table surface
16 Expansion recess
17, 40, 64 Rotating shaft
20, 45 Recessed recess
22, 47, 50 Expansion table
24, 43, 46, 49 Extended table surface
30 Vehicle seat
44 Table extension
53 Aircraft seat

Claims (10)

The table provided on the back side of the backrest is stored in close proximity to the back surface of the backrest when stored, and the front end rotates without being separated from the back surface of the backrest until it is almost horizontal when in use. In the supported vehicle seat, an extension recess having an extension table surface extending substantially horizontally at substantially the same height level as the table surface of the table in use is formed on the back surface of the backrest. A vehicle seat characterized in that the table depth can be expanded by making the extended table surface substantially continuous with the table surface in use. The table provided on the back side of the backrest is stored close to the back of the backrest in a substantially parallel manner when stored, and the front end is not separated from the back surface of the backrest or is separated from the back of the backrest so that the whole is substantially horizontal. In a supported vehicle seat, the table depth can be expanded by providing an extended table surface extending substantially horizontally forward from the center of rotation at the front end of the table in use. A vehicle seat, wherein a depth from the center to the front end of the extension table surface is at least 1/4 times a depth from the rear end of the table to the center. The vehicle seat according to claim 2, wherein the extension table surface is an upper surface of a table extension portion formed integrally with the table. The vehicle seat according to claim 2, wherein the extension table surface is an upper surface of an extension table formed separately from the table. 5. The extension table is connected to the table so as to be rotatable between an extended position where the extension table surface and the table surface are flush with each other and a non-expanded position where the table surface is not flush with each other. The listed vehicle seat. The vehicle seat according to claim 4, wherein the extension table is slidably connected to the table between an extended position drawn from the table and a non-expanded position overlapping the table. The vehicle seat according to any one of claims 2 to 6, wherein at least a front end portion of the table extension portion or the extension table when in use enters a relief recess formed on a back surface of the backrest. The vehicle seat according to claim 5, wherein substantially the entire expansion table at the time of storage enters a relief recess formed on a back surface of the backrest. The table provided on the back side of the backrest is stored in close proximity to the back surface of the backrest when stored, and when used, the front end is separated from the back surface of the backrest and is rotated until it is almost horizontal. As described above, in the supported vehicle seat, the table in use is slidably supported between the reference position immediately after the rotation and the position away from the reference position. A vehicle seat characterized by being made to be able to. The vehicle seat according to claim 9, wherein the table is adjustable to an arbitrary distance position by providing a plurality of the distance positions in the front-rear direction or in a stepless manner.

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