JP6387836B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat. Specifically, the seat back can be switched between a retracted state folded on the back and a use state deployed in a substantially horizontal shape with a gap in the front-rear direction on the back side of the back. The present invention relates to a vehicle seat provided with a simple table.

  2. Description of the Related Art Conventionally, a vehicle seat is known in which a table used by a occupant of a rear seat is provided on the back of a seat back (Patent Document 1). The table is attached to the tip of an arm that is unfolded from the back of the seat back to the rear side. When the above-described arm is in the retracted state in which the arm is folded on the back of the seat back, the table is similarly locked against the back of the seat back. The table is switched to a state of functioning as a table by releasing the lock and tilting the arm to the rear side and then tilting to the rear side with respect to the arm to a horizontal state.

Japanese Utility Model Publication No. 5-78630

  However, in the above prior art, since the table is tilted rearward from the deployment position of the arm, there is a gap between the deployed table and the back of the seat back, and this space is wasted. turn into. The present invention was created as a solution to the above-described problem, and the problem to be solved by the present invention is to effectively use a space that is open between the back of the seat back when the table is unfolded. It is in.

  In order to solve the above problems, the vehicle seat of the present invention takes the following means.

  The first invention includes a retracted state folded on the back of the back of the seat back and a use state developed in a substantially horizontal shape with a gap in the front-rear direction on the back side of the back of the back. It is a vehicle seat provided with a table that can be switched between. This vehicle seat has a sub-table that is disposed on the back of the seat back and can form a substantially horizontal top plate surface at a position that covers the gap formed when the table is unfolded.

  According to the first aspect of the present invention, by providing the sub-table at the above position, the space that is vacant with the back of the seat back when the table is unfolded can be effectively used as the table surface.

  The second invention is the following configuration in the first invention described above. The sub-table is also configured to be switchable between a retracted state folded on the back of the seat back and a use state developed in a substantially horizontal shape on the rear side of the back.

  According to the second aspect of the invention, the sub-table can also be stored in a compact state folded on the back of the seat back when not in use.

  The third invention is the following configuration in the second invention described above. A table is rotatably attached to an arm that is deployed so as to tilt backward from the back of the seat back, and is separated from the back of the seat back by the rear tilt of the arm with respect to the arm. It is set as the structure which rotates and expand | deploys in a substantially horizontal shape. The sub-table is mounted on the back of the seat back so that it can rotate up and down, and is arranged in a state where it overlaps with the movement trajectory of the rotating body that rotates integrally with the arm. It is developed and stored in conjunction with the movement of the.

  According to the third aspect of the present invention, the expansion and storage of the subtable can be performed by expanding and storing the table.

  The fourth invention is the following structure in the third invention described above. By deploying the sub-table in a substantially horizontal shape, it is configured to be held in a posture by being suspended by a flexible suspension material with respect to the back back portion of the seat back.

  According to the fourth aspect of the present invention, even when the sub table is in a substantially horizontal unfolded position at a position different in height from the position in which the table is unfolded in a substantially horizontal state, the sub table is substantially horizontal. Can be held in a state of being unfolded.

1 is a perspective view illustrating a schematic configuration of a vehicle seat of Example 1. FIG. It is a perspective view showing the storing state of the table. It is the schematic diagram which represented the storage state of the table by side view. It is the schematic diagram which represented the state in the middle of expansion | deployment of a table by side view. It is the schematic diagram which represented the expansion | deployment state of the table by side view. FIG. 6 is a schematic diagram showing a state in which the seat back is tilted rearward.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing.

  First, the configuration of the seat 1 (vehicle seat) according to the first embodiment will be described with reference to FIGS. As shown in FIG. 1, the seat 1 of this embodiment is configured as a front seat of an automobile. The seat 1 includes a seat back 2 that serves as a backrest for a seated person, a seat cushion 3 that serves as a seating portion, and a headrest 4 that serves as a headrest. A flat table 10 that can be used as an accessory stand by a seated person on a rear side seat (not shown) is provided in a substantially central region in the height direction of the back back portion 2A of the seat back 2. .

  Here, the seat back 2 is connected to the rear end portions of the left and right sides of the seat cushion 3 via the recliner 5 that functions as a rotation shaft device capable of stopping rotation. It is in a state. Accordingly, the seat back 2 is normally held in a state in which the backrest angle is fixed by the lock structure in which each of the recliners 5 described above is held in a rotation-stopped state. The seat back 2 is switched to a state in which the backrest angle can be changed in the front-rear direction around the central axis 5A of each recliner 5 by releasing the rotation-stopped state of each recliner 5 by operating a release lever (not shown). It is supposed to be.

  The table 10 provided on the back back portion 2A of the seat back 2 is rotatably attached to the rear region of the seat cushion 3 by the arms 11 attached to the left and right sides. As a result, the table 10 is folded in a shape along the back and back part 2A of the seat back 2 as shown in FIG. 2, and each arm 11 is tilted rearward as shown in FIG. It is in a state where it is provided in a shape that can be rotated and deployed in the front-rear direction between the use state expanded in a substantially horizontal shape on the side.

  Therefore, as shown in FIG. 1, the table 10 is developed from the back back portion 2 </ b> A of the seat back 2 to a substantially horizontal shape on the rear side with the rearward tilt of each arm 11, thereby It is developed in a state in which a gap T in the front-rear direction is left between the back portion 2A. As described above, the table 10 is deployed to the rear side with the rearward tilt of each arm 11, so that the table 10 is deployed to a position where the table 10 is closer to the seated person in the rear seat and easy to use. . However, the gap T that is opened between the seat back 2 and the back portion 2A of the seat back 2 as described above functions as an escape space that allows the seat back 2 to tilt backward as shown in FIG. It can't be done and is wasted.

  Therefore, as shown in FIG. 1, in order to effectively use the gap T, a flat plate that can be developed into a shape that can be used as a small item in the gap T is provided on the back back portion 2A of the seat back 2. A sub-table 20 is provided. Similarly to the table 10, the sub-table 20 is also stored in a folded state along the back and back portion 2A of the seat back 2 as shown in FIG. 1 and substantially rearward as shown in FIG. Between the usage state expanded into a shape, it is in a state provided in a shape that can be expanded and stored by rotating in the front-rear direction.

  As shown in FIG. 3, when the sub-table 20 is in the retracted state folded along the back back portion 2A of the seat back 2, the sub-table 20 is also in the retracted state on the rear side of the region on the upper edge side. In addition, the shape of the area portion on the lower edge side of the table 10 is provided so as to be overlapped. With such an arrangement, as shown in FIG. 3, the sub-table 20 has the seat back 2 together with the table 10 by the support from the rear side by the table 10 when the table 10 is in the storage state. It is held in a retracted state folded in a shape along the back back portion 2A.

  Further, as shown in FIG. 4, the sub-table 20 is developed to follow the rear side so as to lean on the table 10 as the table 10 is moved rearward from the storage state. It has become. The reason why the sub-table 20 falls down following the movement of the table 10 as described above is that the normally used backrest angle of the seat back 2 is an angle inclined backward to some extent. As shown in FIG. 5, when the table 10 is deployed in a substantially horizontal shape on the rear side, the sub-table 20 is similarly developed in a substantially horizontal shape on the rear side. The gap T formed between the back 2 and the back portion 2A of the back 2 is locked from the upper side.

  At this time, the sub-table 20 is arranged such that the rear edge side area portion developed in a substantially horizontal shape is overlapped with the area on the front edge side of the table 10 similarly developed in a substantially horizontal shape. It will be deployed in the state that was allowed to. Specifically, the sub-table 20 is developed such that the horizontally developed rear edge side region portion is substantially overlapped with the upper portion of the front edge side region portion of the table 10. By being developed in this way, the sub-table 20 is developed in a continuous form with a small difference in level from the table 10 (a form in which the table 10 is expanded in the depth direction). It has become.

  The table 10 described above is attached to the rear region of the seat cushion 3 via the left and right arms 11 described above with reference to FIG. 1, but the sub-table 20 is attached to the back back part 2 </ b> A of the seat back 2. . Specifically, each arm 11 described above has a lower end portion of the seat cushion 3 that can be rotated in the front-rear direction around the same axis as the central axis 5A of each recliner 5 described above by the connecting shaft 11A. It is connected to the rear region. As a result, each arm 11 is retracted to a predetermined angular position as shown in FIG. 4 and a retracted state in which the arms 11 are folded along the back and back portions 2A of the seat back 2 as shown in FIG. It is set as the state provided in the form which can be rotated in the front-back direction between the tilted deployment state. Each of the arms 11 is tilted rearward to the unfolded state shown in FIG. 4, so that a stopper structure (not shown) provided between the arms 11 and the seat cushion 3 comes into contact and is locked. Yes.

  As shown in FIG. 2, the lower end portions of the left and right sides of the table 10 are connected to the upper ends of the arms 11 described above so as to be rotatable in the front-rear direction by a rotation shaft 10 </ b> A. As a result, the table 10 is raised from the upper end of each arm 11 so as to be substantially flush with each arm 11 as shown by the phantom line in FIG. As in the state shown by the solid line 5, it is in a state in which it can rotate in the front-rear direction between the standing state and the tilted state tilted to the rear side at an oblique angle. The table 10 is brought into contact with an arm (not shown) provided between each arm 11 at each position where the above-described bi-directional forward / reverse rotational movement with respect to each arm 11 is in the standing state and the tilting state. It is designed to be locked.

  With such a configuration, the table 10, as shown in FIGS. 2 to 3, is seated together with each arm 11 in the state where the table 10 stands up substantially flush with each arm 11 described above. And a state of being folded in a shape along the back back portion 2A, and a state in which each arm 11 is tilted rearward from the back back portion 2A of the seat back 2 to a predetermined angular position as shown in FIG. , And can move integrally with each arm 11. Further, the table 10 is tilted rearward together with each arm 11 shown in FIG. 4 to the position where the arm 11 is in the tilted state described above. The top plate surface 10B is deployed in a state where it is collapsed into a substantially horizontal shape.

  From the developed state, the table 10 is operated so as to raise the table 10 forward, so that the shape along the back back portion 2A of the seat back 2 as shown in FIGS. It is returned to the storage state folded. Specifically, by raising the table 10 to the front side from a state where the table 10 is expanded in a substantially horizontal shape shown by the solid line in FIG. 5, the table 10 is connected to each arm 11 as shown by a virtual line in FIG. 5. It is raised to an angle that is substantially flush, and at that position, the rotational movement in the raising direction with respect to each arm 11 of the table 10 is locked (state shown in FIG. 4). Therefore, the table 10 and each arm 11 are integrated with each other by operating the table 10 so as to be raised toward the front side from there, thereby connecting the connecting shaft 11A (see FIG. 1) on the lower end side of each arm 11. It is raised to the front at the center, and is in a retracted state in which the seat back 2 is folded along the back back portion 2A (see FIG. 3).

  Then, after the storing operation, as shown in FIG. 2, the rotary operation type knob 2 </ b> B provided in the area of the back portion 2 </ b> A of the seat back 2 located on the upper side of the table 10 is turned so as to be in the vertical direction. Then, the table 10 can be held in the stored state by the knob 2B by being hung from the rear side on the region on the upper edge side of the table 10. In order to unfold the table 10 from the stored state, the table 10 can be unfolded by being tilted rearward by rotating the knob 2B so as to be turned sideways and removing it from the table 10. .

  As shown in FIGS. 2 to 3, the sub-table 20 is tilted in the front-rear direction on the back back portion 2 </ b> A of the seat back 2 by the rotating shaft 20 </ b> A whose lower end side is directed axially in the seat width direction. It is connected so that it can rotate. Thereby, the sub-table 20 is unfolded in a retracted state along the back and back portion 2A of the seat back 2 as shown in FIG. 1, and developed in a substantially horizontal shape on the rear side as shown in FIG. The state of being provided in a form that can be expanded and retracted by rotation in the front-rear direction.

  As shown in FIG. 1, the sub-table 20 is a flexible structure that is suspended from the back back portion 2 </ b> A of the seat back 2 at each of the left and right rear end sides when the sub table 20 is tilted to the rear side. The hanging strap 21 is connected. As a result, the sub table 20 is deployed in a substantially horizontal shape from the back part 2A of the seat back 2 to the rear side, whereby each of the hanging straps 21 is stretched and the top surface 20B is substantially horizontal. It is held (suspended) in a state where it is unfolded. Here, each of the hanging straps 21 corresponds to the “suspending material” of the present invention.

  As shown in FIG. 5, when the sub-table 20 is deployed in a substantially horizontal shape on the rear side as described above, the upper side of the region on the front edge side of the table 10 that is also deployed in a substantially horizontal shape. The shape is substantially overlapped, and the arrangement in the front-rear direction is partially overlapped. The arrangement relationship between the sub-table 20 and the arrangement in which the arrangement in the front-rear direction is partially overlapped on the table 10 is such that the backrest angle of the seat back 2 can be changed back and forth as shown in FIG. Even if it is adjusted, the relative positional relationship between each other is shifted but not changed.

  That is, when the backrest angle of the seat back 2 is changed in the state in which the sub-table 20 and the table 10 are deployed, the table 10 is attached to the seat cushion 3 (see FIG. 1), so the seat back 2 However, since the sub-table 20 is attached to the seat back 2, it moves following the movement of the seat back 2.

  At that time, when the sub-table 20 is grounded on the top plate surface 10B of the table 10 due to the backward tilt of the seat back 2, the sub-table 20 is tilted backward from the seat back 2 so that the top table surface of the table 10 is The sliding angle of the seat back 2 is changed so as to be narrowed while sliding on 10B. By this movement, the sub-table 20 maintains a continuous shape (a shape in which the table 10 is expanded in the depth direction) with little difference in level with the table 10 even when the seat back 2 tilts backward. It is like that.

  Therefore, the mounting position of the rotary shaft 20 </ b> A of the sub-table 20 is set to a position slightly higher than the position of the top plate surface 10 </ b> B in the unfolded state of the table 10. With such an arrangement, when the sub-table 20 slides on the table 10 due to the backward tilt of the seat back 2, the rotary shaft 20A of the sub-table 20 is positioned lower than the unfolded table 10. It is difficult for the sub-table 20 to be lowered so as to be lifted backward from the contact point with the table 10 as a starting point. When the sub-table 20 slides on the table 10 due to the backward tilt of the seat back 2 and the deployment angle from the back back portion 2A of the seat back 2 is narrowed, the hanging strap 21 that suspends the sub-table 20 from above. However, the movement of the sub-table 20 is allowed.

  The sub-table 20 is lifted from the table 10 when the backrest angle of the seat back 2 is raised above a certain level from the state of being grounded on the table 10. At this time, the sub-table 20 is held in a posture in which the sub-table 20 is developed in a substantially horizontal shape from the back back portion 2A of the seat back 2 to the rear side by being suspended by the hanging strap 21. When the sub-table 20 is unfolded together with the table 10, a part of the sub-table 20 is placed on the table 10, so that the table 10 is moved forward from the unfolded state. Can be raised before.

  Specifically, the sub-table 20 is raised together with the table 10 by raising the table 10 to an angle that is substantially flush with the arms 11 as shown in FIG. Further, as shown in FIG. 3, the sub-table 20 is pushed by the table 10 when the table 10 is folded in a shape along the back-back part 2 </ b> A of the seat back 2, and similarly the back-back part of the seat back 2. The storage state is folded into a shape along 2A. As shown in FIG. 2, the sub-table 20 is locked in the retracted state in such a manner that the table 10 is locked from the rear side by the table 10 by being locked by the knob 2 </ b> B described above in the retracted state. It becomes a state.

  In summary, the seat 1 (vehicle seat) of this embodiment has the following configuration. In other words, the seat back 2 has a back-back portion 2A in a retracted state folded into the back-back portion 2A, and a use state in which the seat back 2 is deployed in a substantially horizontal shape with a clearance T in the front-rear direction on the back side of the back-back portion 2A. The sheet 1 is provided with a table 10 that can be switched between The seat 1 has a sub-table 20 that is disposed on the back portion 2A of the seat back 2 and can form a substantially horizontal top surface 20B at a position that covers the gap T formed when the table 10 is unfolded. . By providing the sub-table 20 at such a position, it is possible to effectively use a space that is freed from the back portion 2A of the seat back 2 when the table 10 is unfolded as a table surface.

  The sub-table 20 is also configured to be switchable between a retracted state folded on the back back part 2A of the seat back 2 and a use state developed in a substantially horizontal shape on the rear side of the back back part 2A. . With such a configuration, the sub-table 20 can also be stored in a compact state folded on the back back portion 2A of the seat back 2 when not in use.

  Further, the table 10 is rotatably attached to an arm 11 that is deployed so as to tilt backward from the back back portion 2A of the seat back 2, and the rear side of the back of the seat back 2 from the back back portion 2A of the seat back 2 by the rear tilt of the arm 11 It is set as the structure which rotates with respect to the arm 11 in the position spaced apart, and is developed in a substantially horizontal shape. The sub table 20 is attached to the back back portion 2A of the seat back 2 so as to be able to rotate upside down, and overlaps with the movement locus of the rotating body (table 10 in this embodiment) that rotates integrally with the arm 11. As a result, the arm 11 is unfolded and stored in conjunction with the unfolding and retracting movement of the arm 11. With this configuration, the table 10 can be expanded and stored, so that the subtable 20 can also be expanded and stored.

  Further, the sub-table 20 is deployed in a substantially horizontal shape, so that the posture is maintained by being suspended by the flexible strap 21 (hanging material) with respect to the back back portion 2A of the seat back 2. It is configured. With such a configuration, even if the sub table 20 is in a substantially horizontal unfolded position at a position different in height from the position in which the table 10 is unfolded in a substantially horizontal state, The table 20 can be held and held in a state of being developed in a substantially horizontal shape.

  As mentioned above, although the embodiment of the present invention has been described using one example, the present invention can be implemented in various forms in addition to the above example. For example, the “vehicle seat” of the present invention can be widely applied to vehicles used for various vehicles such as vehicles other than automobiles such as railways, airplanes and ships.

  Further, the table may be provided with a seat back, similar to the sub-table. Even in such a configuration, when the backrest angle of the seat back is not adjusted, the table or the subtable can be used in a form in which the development angle cannot be changed. Further, the sub-table may be provided with a seat cushion, similarly to the table.

  Further, the sub-table only needs to be configured so that a substantially horizontal top plate surface can be formed at a position that covers the gap between the back and the back portion of the seat back that is formed when the table is unfolded. It does not have to be configured. Further, the sub-table does not have to be expanded and stored in conjunction with the expansion and storage of the table, and the table and the sub-table may be separately expanded and stored.

  Further, the sub-table is arranged in a state where it overlaps with the movement locus of the rotating body that rotates integrally with the arm of the table, so that the sub-table is unfolded and stored in conjunction with the unfolding and retracting movement of the arm. However, specifically, as shown in the above-described embodiment, in addition to being arranged in a state overlapping with the movement trajectory of the table, it may be arranged in a state overlapping with the movement trajectory of the arm. Moreover, you may arrange | position in the state which overlaps with the movement locus | trajectory of the other member rotated integrally with these members.

  Moreover, the suspension material which suspends a subtable can apply various members, such as another flexible member and the link member which can bend and extend, besides a hanging strap. Further, the sub table may be provided at a position that does not interfere with the table even when the seat back is tilted backward and is largely separated from the table in the height direction. Further, the sub table only needs to be provided so as to cover the gap between the back of the seat back formed when the table is unfolded, and is provided shallowly so that the gap remains even when the sub table is unfolded. It may be a thing.

  Further, the table and the sub-table may each be raised from the storage state folded in a shape along the back portion of the seat back and developed in a substantially horizontal shape. In addition, the table and the sub-table are not limited to the above-described deployment storage structure, and may be various types such as, for example, a swivel deployment to the rear side, a rotation deployment in a substantially horizontal shape, and a deployment operation combined with a slide operation. It may be configured to be expanded and stored in the operation mode.

  Further, the sub-table may be provided at a position lower than the table so as to cover a gap formed between the table and the back of the seat back from below. Alternatively, the sub table may be provided in the gap so as to be flush with the table.

1 seat (vehicle seat)
DESCRIPTION OF SYMBOLS 2 Seat back 2A Back part 2B Knob 3 Seat cushion 4 Headrest 5 Recliner 5A Center axis 10 Table 10A Rotating shaft 10B Top plate surface 11 Arm 11A Connecting shaft 20 Sub table 20A Rotating shaft 20B Top plate surface 21 Hanging string (hanging material)
T gap

Claims (2)

A table that can be switched between a retracted state folded on the back portion of the back of the seat back and a use state developed in a substantially horizontal shape with a gap in the front-rear direction on the back side of the back portion. Is a vehicle seat provided with
Wherein disposed on the back lining portion of the seat back and have a sub-table that can form a substantially horizontal top plate surface to a position covering the gap formed during the deployment of the table,
The sub-table is also configured to be switchable between a retracted state folded on the back part of the seat back and a use state developed in a substantially horizontal shape on the back side of the back part,
The table is rotatably attached to an arm that is deployed so as to tilt backward from the back back portion of the seat back, and is separated rearward from the back back portion of the seat back by the backward tilt of the arm. It is configured to rotate with respect to the arm at a position and deployed in a substantially horizontal shape,
The sub-table is attached to the back portion of the seat back so as to be able to rotate upside down, and is arranged in a state overlapping the movement trajectory of the table that rotates together with the arm. expansion storage of the vehicle seat that will be developed in a state where the shape is superimposed on the table along conjunction with the expanded stored in motion. The vehicle seat according to claim 1,
The subtable, substantially by being deployed in a horizontal shape, the seat back of the back lining portion hung has been a vehicle seat that will be configured to be held posture by a flexible hanging member against .

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