JP6661038B1 - Rear table for vehicle seats - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance cleaning efficiency of a use surface of a back table of a vehicle seat. A rear table 10 for a vehicle seat according to an embodiment of the present invention is configured to be stored in a rear area 10r of a seat 12 when used and to be pulled out to the rear of the seat when used. A pair of stays 20 rotatably provided around one end on the back side of the seat, a table main body 22 provided at the other end of the stays, and a use surface serving as a surface when the table main body is used. 32, a movable mechanism 24 configured to move the table main body with respect to the stay so as to face the rear side of the seat when not in use. [Selection diagram] FIG.

Description

  The present invention relates to a rear table of a vehicle seat, which is provided on the rear side of a seat of a vehicle such as a bullet train, is stored in a rear side area of the seat when not in use, and is pulled out behind the seat when in use.

  Patent Document 1 discloses one proposal of a rear table of a vehicle seat, which is provided on the back side of a seat of a vehicle such as a bullet train, is stored in a rear side area of the seat when not in use, and is pulled out behind the seat when in use. Have been. In this back table, the table body stored on the back side of the seat when not in use is pulled out in the same direction when in use, so that the use surface of the table body faces upward.

JP-A-8-2302

  By the way, when the back table of Patent Literature 1 is stored in the back side area of the seat when not in use, the surface in use, that is, the use surface faces the back surface of the seat. Therefore, when cleaning the use surface, the rear table must be pulled out.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to make it possible to increase the efficiency of cleaning the use surface of a rear table of a vehicle seat.

In order to achieve the above object, one embodiment of the present invention provides:
A back table for a vehicle seat, which is stored in a rear side area of the seat when not in use and is configured to be pulled out behind the seat when in use,
A pair of stays rotatably provided around one end on the back side of the seat,
A table body provided at the other end of the stay,
A movable mechanism configured to make the table main body movable relative to the stay, so that a use surface that becomes a surface when the table main body is used is directed toward the rear side of the seat when not in use. Provide a back table.

  Preferably, the movable mechanism includes an arm member, a first rotation mechanism that allows the arm member to rotate with respect to the stay, and a second rotation mechanism that enables the table body to rotate with respect to the arm member. A rotation mechanism.

  Preferably, the first rotation mechanism includes a first shaft member that defines a rotation axis of the arm member with respect to the stay, and a first regulating unit that rotates with the arm member around the first shaft member with respect to the stay. And a first rotating portion movable with respect to

  Preferably, the second rotation mechanism includes a second shaft member that defines a rotation axis of the table main body with respect to the arm member, and a second shaft member that rotates with respect to the arm member around the second shaft member. A second rotating portion movable with respect to the regulating portion.

  It is preferable that a slide mechanism that enables the table body to slide with respect to the arm member is further provided.

  According to the one aspect of the present invention, since the above-described configuration is provided, it is possible to increase the efficiency of cleaning the used surface of the rear table of the vehicle seat.

It is a mimetic diagram showing the schematic structure of the back table of the seat for vehicles concerning one embodiment of the present invention. FIG. 2 is a view showing the back table of FIG. 1 as viewed from a side of a seat, and (a) to (e) show a state change of the back table in a stepwise manner. FIG. 2 is a view showing the rear table of FIG. 1 as viewed from the side of a seat with a transparent table body, and (a) to (e) show a state change of the rear table in a stepwise manner. FIG. 2 is a diagram illustrating a lower end side of a stay in the back table of FIG. 1. 1A is a left side view of the table body side of the back table, FIG. 1B is a front view thereof, and FIG. 1C is a bottom view thereof. 5A is a view of a connecting portion between the arm member and the table main body in the rear table of FIG. 1, FIG. 5A is a view taken along the arrow VI in FIG. 5C, and FIG. FIG. FIG. 7 is a cross-sectional view of the arm member in the back table of FIG. 1, taken along a line VII-VII in FIG. 6. 5A and 5B are diagrams of a connection portion between an arm member and a stay in the back table of FIG. 1, wherein FIG. 5A is a cross-sectional view taken along the line VIIIA-VIIIA of FIG. 5B, and FIG. It is an arrow view.

  Hereinafter, embodiments according to the present invention will be described with reference to the accompanying drawings. The same components (or configurations) are denoted by the same reference numerals, and have the same names and functions. Therefore, detailed description thereof will not be repeated.

  FIG. 1 is a schematic diagram showing a schematic configuration of a rear table 10 of a vehicle seat according to an embodiment of the present invention. Vehicles to which the rear table 10 can be applied include airplanes and trains, for example, bullet trains. In this vehicle, the seat 12 basically faces forward in the direction of travel. A passenger sitting on a certain seat 12 can use a table provided on the rear side (or the rear side) of the front seat 12, that is, the rear table 10. The rear table 10 is configured to be stored in the rear area 10r of the seat 12 when not in use, and to be pulled out behind the seat 12 when in use. FIG. 1 shows four modes of the back table 10 in an overlapping manner. In FIG. 1, the reference numeral "10a" is assigned to the back table 10 in the stored state (or non-use state) in the back side area 10r of the seat 12, and the back table 10a is slightly pulled out and the back is in a state where it has begun to expand. The table 10 is denoted by reference numeral “10b”, the rear table 10 in the expanded state is denoted by reference numeral “10c”, and the rear table 10 that is completely pulled out and is in the expanded state (or in use state) is denoted by the reference numeral “10b”. 10d ". Thus, FIG. 1 schematically shows a change between the stored state of the back table 10 when not in use and the deployed state when in use. A configuration that allows this change will be described below.

  The rear table 10 includes a pair of stays 20, a table body 22, and a movable mechanism 24 configured to make the table body 22 movable with respect to the stay 20. These movements are shown in FIGS. FIG. 2 is a view showing the back table 10 of the seat 12 viewed from the side of the seat 12. 2 (a) to 2 (e) show the state change of the back table 10 in a stepwise manner. FIG. 2A shows the back table 10 in a stored state when not in use, and FIG. 2E shows the back table 10 in an expanded state when in use. In FIG. 3 in which the table main body 22 is shown transparent, FIGS. 3A to 3E correspond to FIGS. 2A to 2E, respectively.

  As shown in FIG. 2A, the back table 10 is stored in the back area 10r of the seat 12 when not in use, and is fixed in the stored state by a hook 16 as a holding member. Then, when the hook 16 is removed and the rear table 10 is deployed through the steps of FIG. 2B to FIG. 2D, the rear table 10 is in the deployed state of FIG. 2E. Conversely, by folding from the unfolded state of FIG. 2E through the stages of FIG. 2D to FIG. 2B, the back table 10 is in the stored state of FIG. 2A.

  In the back table 10, a pair of stays 20 are attached to the seat 12 at one end (hereinafter, lower end) 20a side, and a table body 22 is provided at the other end (hereinafter, upper end) 20b side. I have. FIG. 4 shows the lower end 20 a side of the stay 20. As shown in FIG. 4, each stay 20 is provided on the rear side of the seat 12 so as to be rotatable about a lower end portion 20a within a first predetermined angle range θa. The rotation of the stay 20 substantially occurs along a virtual plane extending in the front-rear direction of the seat 12 and orthogonal to the floor on which the seat 12 is installed. The lower end portion 20a of the stay 20 includes a shaft member 26 that defines a rotation axis, and a stay regulating portion 28 that regulates a rotation range of the stay 20 around the shaft member 26 with respect to the seat 12 within a first predetermined angle range θa. Prepare. In FIG. 4, the stay 20 indicated by a solid line is when the rear table 10 is in a retracted state, and the stay 20 indicated by a broken line is when the rear table 10 is in an expanded state. When the state of the back table 10 changes from the stowed state to the unfolded state or from the unfolded state to the stowed state, the stay 20 rotates around a shaft member 26 extending in the width direction (perpendicular to the aforementioned virtual plane). When the back table 10 is in the stored state, the table body 22 abuts on the back of the seat 12, so that the movement of the stay 20 to the storage side is restricted by the back of the seat 12. On the other hand, when the back table 10 is in the unfolded state, the distal end portion 20c of the lower end portion 20a of the stay 20 abuts on a stopper portion 30 provided below the seat 12. Thereby, the movement of the stay 20 toward the deployment side, that is, the rotation of the stay 20 around the shaft member 26 in the first direction R1 is restricted within the first predetermined angle range θa. The first predetermined angle range θa can be set arbitrarily, and can be set to an angle that does not hinder use of the back table 10 even when the seat 12 provided with the back table 10 is tilted backward. The stay restricting portion 28 is configured to include the tip portion 20c as a contact portion that can contact the stopper portion 30. In addition, the stopper part 30 is not limited to being provided in the seat 12, and may be provided in the floor in which the seat 12 was installed, for example. Further, the stay restricting portion 28 is not limited to such a configuration. For example, a pin portion that moves with the rotation of the stay 20 around the shaft member 26 and a groove or a hole that fits and moves with the pin portion may be used. It is possible to provide a configuration in which the movement of the pin is restricted by both ends or one end of the groove or the hole.

  A table body 22 is provided on the upper end 20 b side of the pair of stays 20. The movable mechanism 24 is configured to make the table body 22 movable with respect to the stay 20. The movable mechanism 24 enables the use surface 32, which becomes a surface when the table body 22 is used, to face the rear side of the seat 12, that is, another seat side behind when the table body 22 is not in use, that is, in the retracted state. It has a configuration.

  The movable mechanism 24 includes an arm member 34. An arm member 34 is provided for the pair of stays 20. The table body 22 is attached to the arm member 34. The arm member 34 is provided to be rotatable within a predetermined angle range (hereinafter, a second predetermined angle range) with respect to the stay 20 in the second direction R2. The arm member 34 is provided so that the table main body 22 can rotate in the third direction R3 within a predetermined angle range (hereinafter, a third predetermined angle range). A rotation mechanism (hereinafter, a first rotation mechanism) RM1 that enables the arm member 34 to rotate with respect to the stay 20, and a rotation mechanism (hereinafter, a second rotation mechanism) that enables the table body 22 to rotate with respect to the arm member 34. (A rotation mechanism) RM2.

  Here, the table body 22 side of the back table 10 is shown in FIG. FIG. 5A corresponds to FIGS. 2E and 3E. If FIG. 5A is a left side view of the table body 22 side of the back table 10, FIG. 5B is a front view and FIG. 5C is a bottom view. In FIG. 5, the table main body 22 is transparently shown as in FIG. FIG. 6 is a view of a connecting portion between the arm member 34 and the table main body 22. FIG. 6 (a) is a view taken in the direction of arrow VI in FIG. 5 (c), and FIG. 6 (b) is provided there. FIG. 4 is an exploded view of a shaft member 38. FIG. 7 is a cross-sectional view of the arm member 34, which corresponds to a cross-sectional view taken along line VII-VII of FIG. 8A and 8B are diagrams of a connection portion between the arm member 34 and the stay 20, FIG. 8A is a cross-sectional view taken along the line VIIIA-VIIIA of FIG. 5B, and FIG. FIG. First, the connection between the arm member 34 and the table main body 22 will be described, in particular, the second rotation mechanism RM2.

  The arm member 34 includes two side arm portions 35 and a connecting portion 36 connecting them. Each of the two side arm portions 35 is associated with a corresponding stay 20. 1 and 2, the side arm 35 extends in the front-rear direction of the seat 12, extends on a virtual plane orthogonal to the floor on which the seat 12 is installed, and the connecting portion 36 extends in the width direction. The side arm 35 is formed of an elongated member, and has a guide hole 34a extending in the longitudinal direction. Therefore, the side arm portion 35 is configured as a long thin annular member. The pair of side arms 35 are provided for the pair of stays 20 such that the guide holes 34a open in the width direction and face each other. The connecting portion 36 of the arm member 34 is an elongated member having an arc-shaped cross section as shown in FIG. The connecting portion 36 is provided at one end in the longitudinal direction of the side arm portion 35 outside the guide hole 34a. The pair of side arm portions 35 are integrated by a connecting portion 36, thereby forming an arm member 34. The connection between the side arm portion 35 and the connecting portion 36 is made by using a screw 36a here, but may be made by other mechanical connecting means such as a bolt, or by chemical bonding such as adhesion or welding. This may be done by connection means.

  On the other hand, the table main body 22 constituting a so-called top plate includes a flat plate portion 22a, and side extension portions 22b extending from both ends of the flat plate portion 22a in the direction orthogonal to the flat plate portion 22a and on the same side. An end extension 22c is provided to extend from a further end of the flat plate portion 22a to the same side as the side extension 22b so as to be sandwiched by the extension 22b. The side extension 22b is flat, and the end extension 22c is curved. The end extension 22 c has a shape corresponding to the curved shape of the connecting portion 36 of the arm member 34. The end extension 22c is separated from the side extension 22b as shown in FIG. 5 (c), and a notch is formed between them. The notch C allows the table body 22 to have a function of rotating with respect to the arm member 34. The side of the flat plate portion 22a where the extension portions 22b and 22c do not extend becomes the use surface 32 when the back table 10 is in use. A shaft member 38 shown in FIG. 6B is attached to each side extension 22b. The shaft member 38 includes a bolt member 38a, a roller member 38b, a washer 38c, a spring washer 38d, and a nut 38e. The shaft member 38 is provided so as to extend in the width direction so as to pass through the guide hole 34 a of the side arm portion 35, and defines a rotation axis of the table main body 22 with respect to the arm member 34. 6A, the roller member 38b is generally positioned in the guide hole 34a of the side arm 35 of the arm member 34. As the shaft member 38 moves along the guide hole 34a, the table body 22 slides with respect to the arm member 34. In particular, the table main body 22 is slidable with respect to the arm member 34 by the length of the guide hole 34a in the longitudinal direction. The slide mechanism SM that enables the table body 22 to slide with respect to the arm member 34 includes a shaft member 38 and a guide hole 34a of the arm member 34.

  When the table main body 22 and the arm member 34 are in the state shown in FIGS. 2B and 3B and the table main body 22 is positioned so as to substantially cover the arm member 34, the shaft member 38 has the guide hole 34a. Is located at one end 34b in the longitudinal direction (see, for example, FIGS. 3A and 5A). At this time, since the flat plate portion 22a of the table body 22 is in contact with the outer surfaces 34d of the pair of side arm portions 35, the table body 22 does not substantially rotate with respect to the arm member 34. On the other hand, when the table main body 22 slides with respect to the arm member 34, and the table main body 22 projects from the arm member 34 and is in the state shown in FIGS. It is located at the other end 34c of the guide hole 34a. At this time, the table main body 22 can rotate around the shaft member 38 with respect to the arm member 34 to the side not regulated by the flat plate portion 22a or the like. This rotation can occur until the inner surface 22 d of the flat plate portion 22 a of the table body 22 (the surface opposite to the use surface 32) 22 d contacts the outer surface 34 d of the side arm portion 35 of the arm member 34. Thus, the table main body 22 is rotatable with respect to the arm member 34 within a predetermined angle range, that is, within the third predetermined angle range. Note that the third predetermined angle range in which the table body 22 can rotate with respect to the arm member 34 is approximately 180 ° as is clear from FIGS. 2 and 3, but other values are possible. The second rotation mechanism RM2 that enables the table body 22 to rotate with respect to the arm member 34 includes a shaft member 38 (corresponding to a second shaft member) and a rotation of the table body 22 with respect to the arm member 34 around the shaft member 38. Accordingly, it is configured to include an inner surface 22d (corresponding to a second rotating portion) of the table main body 22 that is movable with respect to an outer surface 34d (corresponding to a second regulating portion) of the arm member 34. The member 40 provided to cover the shaft member 38 is a cover member.

Next, the connection between the arm member 34 and the stay 20, particularly, the first rotation mechanism RM <b> 1 will be described. A first rotation mechanism RM1 that allows the arm member 34 to rotate within a second predetermined angle range with respect to the stay 20 is provided between them. The first rotation mechanism RM1 includes a non-use position where the arm member 34 is substantially parallel to the stay 20 (for example, see FIG. 2C) and a use position where the use surface 32 of the table main body 22 can be used (for example, FIG. 2). The arm member 34 is configured to be rotatable with respect to the stay 20 (see (e)). The first rotation mechanism RM <b> 1 relatively moves with the shaft member (corresponding to the first shaft member) 42 that defines the rotation axis of the arm member 34 with respect to the stay 20, as the arm member 34 rotates around the shaft member 42 with respect to the stay 20. It includes a moving pin portion 44 (corresponding to a first rotating portion) and an arc-shaped guide portion 46 as a restricting portion (corresponding to a first restricting portion) for restricting rotation of the pin portion 44 to a second predetermined angle range. ing.

  As shown in FIG. 8A, the shaft member 42 is a substantially U-shaped member provided to extend in the width direction and fixed to the side arm portion 35 of the arm member 34 while penetrating the stay 20. It is attached to a connecting member 48. A pin member 44 is provided in the same direction as the shaft member 42. Here, the pin member 44 is provided so as to protrude from the stay 20 to the connecting member 48. Here, the pin member 44 is configured to be relatively rotatable between the stay 20 and the arm member 34 integrally with the shaft member 42. An arc-shaped guide portion 46 to which the pin member 44 is guided is formed on a connecting member 48. The pin member 44 moves with respect to the arc-shaped guide portion 46 with the rotation of the arm member 34 with respect to the stay 20 around the shaft member 42. When the pin member 44 is located at one end 46a of the arc-shaped guide portion 46, the arm member 34 is at an unused position substantially parallel to the stay 20 (FIGS. 2B, 2C, 3B, (C)). When the pin member 44 is located at the other end 46b of the arc-shaped guide portion 46 as shown in FIG. 8B, the arm member 34 is at the use position where the use surface 32 of the table main body 22 can be used (see FIG. 8B). 2 (e), 3 (e) and 5). As described above, the second predetermined angle range includes the arm member 34 substantially parallel to the stay 20 most pulled out to the rear of the seat 12 (see, for example, FIGS. 2E and 3E). The angle range between the arm member 34 at the position. Since the connecting member 48 is provided, the table body 22 can slide with respect to the arm member 34.

  The first rotation mechanism RM1 has such a configuration, but may have another configuration. The first rotation mechanism RM1 can have, for example, various configurations of a pivot hinge in addition to various configurations of an arm hinge.

  The back table 10 having the above configuration will be further described based on FIGS. 2 and 3. When the back table 10 is in the non-use state, it is in the storage state of FIGS. 2A and 3A. At this time, the use surface 32 of the table main body 22 faces the rear seat 12 in the rear area 10r of the seat 12 provided with the table main body 22. When using the back table 10 of the front seat 12, the passenger sitting on the seat 12 facing the back table 10 removes the hook 16 and rotates the stay 20 in the first direction R1 (FIG. 2B and FIG. 3 (b). During or after the rotation of the stay 20, the passenger slides the table body 22 relative to the arm member 34 (FIGS. 2C and 3C). During or after this sliding movement, the arm member 34 is rotated with respect to the stay 20, and the table body 22 is further rotated with respect to the arm member 34 (FIGS. 2D and 3D). ). At this time, the second direction R2 of the rotation of the arm member 34 with respect to the stay 20 is the same as the first direction R1 of the rotation of the stay 20, but the third direction of the rotation of the table body 22 with respect to the arm member 34. The direction is opposite to that of R3 (see FIGS. 2B, 2D, 3B, and 3D). When the slide movement of the table main body 22 with respect to the arm member 34, the rotation of the arm member 34 with respect to the stay 20, and the rotation of the table main body 22 with respect to the arm member 34 are completed, the use surface 32 of the rear table 10 is 2 (e) and FIG. 3 (e). In the unfolded state (FIGS. 2 (e) and 3 (e)), the end extending portion 22c of the table main body 22 is hooked on the connecting portion 36 of the arm member 34 and functions as a flow stopper. The main body 22 is prevented from sliding with respect to the arm member 34.

  When the back table 10 is stored, the back table 10 is moved from the unfolded state shown in FIGS. 2 (e) and 3 (e) in the order shown in FIGS. 2 (a) and 3 (a) in the reverse order. It is stored. Note that, at the time of this storage, the first direction R1, the second direction R2, and the third direction R3 are respectively in the opposite directions to the case of the development, but have the same relationship as described above.

  In this way, the table main body 22 is moved on the back table 10. At this time, the direction of rotation of the arm member 34 with respect to the stay 20 by the first rotation mechanism RM1 is opposite to the direction of rotation of the table body 22 with respect to the arm member 34 by the second rotation mechanism RM2. When in the retracted state, the use surface 32 can face the rear side of the seat 12 provided with the back table 10 on the back side (for example, see FIGS. 2A and 3A). Therefore, the use surface 32 of the back table 10 is exposed even when the back table 10 is in the storage state when not in use. Therefore, even when the back table 10 is in the stowed state, people including the cleaning staff can easily see and confirm the state (for example, a dirty state or a clean state) of the use surface 32 of the back table 10 and use the same. When cleaning the surface, for example, when wiping with a cloth or the like, cleaning can be performed without pulling out the back table 10. Therefore, in the back table 10, the cleaning efficiency of the use surface 32 can be improved.

  Further, the rear table 10 only includes a link mechanism having an arm member 34 between the stay 20 and the table main body 22, specifically, the first rotation mechanism RM1 and the second rotation mechanism RM2. In addition, the use surface 32 of the table body 22 can be exposed when not in use. Therefore, since the rear table 10 only has a simple configuration, the operation of the rear table 10 can be stably generated.

  The back table 10 includes a pair of stays 20 and can be applied to a stay of a conventional back table. Therefore, it is possible to easily provide the back table 10 on the seat 12 instead of the conventional back table.

Furthermore, since the use surface 32 of the back table 10 is exposed when not in use, the back table 10 is more hygienic than a conventional back table in which it is not exposed. For example, a material (for example, TiO ₂ ) that exhibits a photocatalytic action can be applied to the use surface 32 of the table body 22 of the back table 10. In this case, the light is applied to the unused surface when not in use, so that the used surface 32 can be maintained more clean.

  As described above, the representative embodiment and the modified example of the present invention have been described, but the present invention can be variously modified. Various substitutions and changes may be made without departing from the spirit and scope of the invention as defined by the appended claims.

Reference Signs List 10 back table 10r back side area 12 seat 16 hook 20 stay 22 table body 24 movable mechanism 26 shaft member 28 stay regulating portion 32 working surface 34 arm member 35 side arm portion 36 connecting portion 34a guide hole 38 shaft member 42 shaft member 44 pin Portion 46 Arc-shaped guide portion 48 Connecting member RM1 First turning mechanism RM2 Second turning mechanism SM Slide mechanism

Claims (5)

A back table for a vehicle seat, which is stored in a rear side area of the seat when not in use and is configured to be pulled out behind the seat when in use,
A table body provided at the other end of a pair of stays rotatably provided around one end on the back side of the seat,
A movable mechanism configured to make the table main body movable with respect to the stay, so that a use surface that becomes a surface when the table main body is used, when not in use, faces the rear side of the seat , An arm member, a first rotating mechanism for rotating the arm member with respect to the stay, and a second rotating mechanism for rotating the table body with respect to the arm member. , A movable mechanism ,
In the movement of the back table between the storage state when not in use and the unfolded state when in use, the direction of rotation of the arm member with respect to the stay is the same as the direction of rotation of the stay, The direction of rotation of the table body with respect to the arm member is opposite to the direction of rotation,
Back table. The first rotation mechanism includes:
A first shaft member that defines a rotation axis of the arm member with respect to the stay;
A first rotating portion movable with respect to a first regulating portion with rotation of the arm member with respect to the stay around the first shaft member.
The back table according to claim 1 . The second rotation mechanism includes:
A second shaft member that defines a rotation axis of the table main body with respect to the arm member;
A second rotating portion movable with respect to a second regulating portion along with rotation of the table body with respect to the arm member around the second shaft member.
The back table according to claim 1 . Further comprising a slide mechanism that allows the table body to slide with respect to the arm member ,
The second rotation mechanism slides the table main body in the longitudinal direction of the arm member, so that the table main body can be rotated with respect to the arm member. It becomes selective to the state where the rotation of the main body is impossible,
The back table according to any one of claims 1 to 3 .   A guide hole extending in a longitudinal direction of the arm member; a second shaft member movable along the guide hole, the second shaft member defining a rotation axis of the table body with respect to the arm member; With
  When the second shaft member is located at one end of the guide hole of the arm member, the rotation of the table body with respect to the arm member is impossible,
  When the second shaft member is located at the other end of the guide hole of the arm member, the table main body can rotate with respect to the arm member.
The back table according to claim 4.