JP2017013694A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat capable of suppressing a state where a pad cannot be deformed as designed.SOLUTION: A vehicle seat 1 comprises: a pad member 10 having a first pad part 11 and a second pad part 12; shape adjustment means 30 for changing the shape of the first pad part 11; and a pair of guide members 20 having a first guide member 21 fixed to the first pad part 11 and a second guide member 22 fixed to the second pad part 12. When changing the shape of the first pad part 11 by the shape adjustment means 30, the shape of the first pad part 11 is changed while the first guide member 21 is guided by the second guide member 22.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a vehicle seat capable of changing the shape of a pad.

  Patent Document 1 below discloses a vehicle seat in which a pad can be pushed forward by a pressing airbag.

JP 2007-282839 A

  In such a vehicle seat that can deform the pad, when the shape adjusting means for changing the shape of the pad is driven, there is a possibility that the pad does not deform as set.

  The problem to be solved by the present invention is to provide a vehicle seat that can suppress the occurrence of a state in which the pad does not deform as set.

  In order to solve the above problems, a vehicle seat according to the present invention includes a pad member having a first pad portion and a second pad portion, shape adjusting means for changing the shape of the first pad portion, and the first pad. And a pair of guide members having a second guide member fixed to the second pad portion, and the shape adjusting means changes the shape of the first pad portion. In this case, the shape of the first pad portion is changed while the first guide member is guided to the second guide member.

  The pair of guide members may have a restricting structure that restricts movement of the first guide member in a direction intersecting a direction guided by the second guide member.

  The first pad portion may include a changing portion whose shape changes when driven by the shape adjusting means and a maintaining portion whose shape does not change, and the first guide member is fixed to the maintaining portion. .

  The first pad portion is fixed on one end side opposite to the side on which the first guide member is provided, and the other end side on which the first guide member is provided has the shape adjusting means. The biasing member may be biased, and the biasing member may be connected to the first guide member.

  The shape adjusting means pushes the first pad portion forward and deforms the portion between the one end side and the other end side of the first pad portion so as to be displaced forward, and the push mechanism. The biasing member for returning the deformed first pad portion to its original state may be included.

  The first guide member may be fixed to the first pad portion so as to incline toward the foremost side of the first pad portion deformed by the push-out mechanism.

  The urging member may have one end connected to the first guide member and the other end connected to a frame that supports the pad member so as to follow the direction in which the first guide member is inclined.

  In the vehicle seat according to the present invention, when the shape of the first pad portion is changed, the shape of the first pad portion is changed while the first guide member is guided to the second guide member. Therefore, occurrence of a state where the pad does not deform as set is suppressed.

  If a structure for restricting the movement of the first guide member in the direction intersecting the direction guided by the second guide member is provided, the guide portion is separated from each other, so that the guide function by the guide portion is impaired. Can be suppressed.

  If the 1st guide member is being fixed to the maintenance part in the 1st pad part, it can control that it will be in the state where guidance is not made smoothly by changing the shape of the 1st pad part.

The first guide member can be used as a member for attaching an urging member for changing the shape of the first pad portion (making the urging force act on the first pad portion). Further, since the urging force of the urging member directly acts on the first guide member, the first pad portion is smoothly guided by the both guide members when the urging force of the urging member acts.
Such an urging member has a force for returning the first pad portion deformed by the push-out mechanism to the original state when the shape adjusting means includes a push-out mechanism that pushes the first pad portion forward. It can be made to function as a member given to one pad part.

  If the first guide member is fixed to the first pad portion so as to be inclined toward the foremost position in the first pad portion deformed by the extrusion mechanism, the first pad portion is guided by both guide members. Is made smoothly.

  If the urging member is provided along the direction in which the first guide member is inclined, the first pad portion is guided more smoothly by the both guide members when the urging force of the urging member is applied.

1 is an external view of a vehicle seat according to an embodiment of the present invention in a stored state. It is the figure which showed typically the cross section (the cross section which cut | disconnected the part which has a slit in the surface orthogonal to the width direction) of the seat back of the vehicle seat concerning one Embodiment of this invention in the retracted state. 1 is an external view of a vehicle seat according to an embodiment of the present invention in use. It is the figure which showed typically the cross section (the cross section which cut | disconnected the part which has a slit in the surface orthogonal to the width direction) of the seat back of the vehicle seat concerning one Embodiment of this invention in use state. It is the figure which showed typically the cross section of the boundary part (part in which a slit exists) of a 1st pad part and a 2nd pad part, Comprising: The guide member was provided.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Unless otherwise specified, the front-rear direction in the following description refers to the forward / backward direction (Y direction shown) of the vehicle on which the vehicle seat 1 is mounted, and the vertical direction refers to the vertical direction of the vehicle. (Z direction shown), and the width direction means a direction (X direction shown) orthogonal to the front-rear direction and the up-down direction. In addition, unless otherwise specified, the shape, direction, etc. of each component are in a state where the vehicle seat 1 (seat back 2) is not deformed (the shape adjusting means 30 as shown in FIGS. 1 and 2 acts). (It may be referred to as a stored state hereinafter.)

  Hereinafter, the present invention applied to the seat back 2 (back portion) of the vehicle seat 1 will be described. In addition, the structure demonstrated below is also applicable to the seat cushion 3 (sitting part) of the vehicle seat 1, the headrest 4, etc. FIG.

  The vehicle seat 1 according to the present embodiment shown in FIGS. 1 to 4 includes a pad member 10, a pair of guide members 20, and a shape adjusting means 30. The pad member 10 is a cushion material that supports an occupant, and is attached to a frame 50 that is a skeleton of the seat back 2. The frame 50 includes at least a frame member positioned on the upper side (upper frame member 51), a frame member positioned on the lower side (lower frame member 52), and frame members positioned on both sides in the width direction (outer frame member 53). It has a substantially rectangular frame-shaped portion that is configured. The pad member 10 has a first pad portion 11 and a second pad portion 12. As will be described later, the first pad portion 11 is a portion where the shape adjusting means 30 acts and the shape changes, and the second pad portion 12 is a portion where the shape is maintained (a portion where the shape does not change). is there.

  In the present embodiment, the first pad portion 11 and the second pad portion 12 are not completely separated. That is, a slit 10 </ b> S is formed in the cushion material constituting the entire pad member 10, and one side of the slit 10 </ b> S serves as the first pad portion 11 and the other side serves as the second pad portion 12. Accordingly, the first pad portion 11 and the second pad portion 12 face each other so as to face the slit 10S (see FIGS. 2 and 4). By doing in this way, even if the 1st pad part 11 deform | transforms, it is suppressed that the 2nd pad part 12 deform | transforms following it. However, the structure which the 1st pad part 11 and the 2nd pad part 12 isolate | separated completely may be sufficient. The 1st pad part 11 in this embodiment is a part (shoulder part) which supports a passenger | crew's shoulder and its vicinity. The second pad portion 12 is a portion below the shoulder portion. The slit 10S in the present embodiment is inclined so as to be directed upward from the rear to the front as viewed in cross section (see FIGS. 2 and 4).

  The pad member 10 (first pad portion 11 and second pad portion 12) is covered with a pad cover 40 (seat cover). In the present embodiment, the surface facing the slit 10 </ b> S in the first pad portion 11 and the surface facing the slit 10 </ b> S in the second pad portion 12 are also covered with the pad cover 40. In the following description, the configuration including the pad cover 40 will be described as the pad member 10 (the first pad portion 11 and the second pad portion 12) unless otherwise specified.

  The first pad portion 11 is hooked on the upper frame member 51 of the frame 50 when viewed in a cross section cut along a plane orthogonal to the width direction (see FIGS. 2 and 4). It can also be said that the upper end portion of the pad member 10 is hooked on the upper frame member 51 of the frame 50. On the other hand, the lower end portion of the first pad portion 11 is connected to the frame 50 via a biasing member 32 described later. Accordingly, the lower end portion of the first pad portion 11 can move against the urging force of the urging member 32 and the urging force. Thus, it can be said that the 1st pad part 11 is a fixed end which the one side edge part cannot move, and the other side edge part is a movable end which can move.

  On the other hand, the 2nd pad part 12 in this embodiment does not displace, and does not change a shape. Since the attachment structure of the 2nd pad part 12 with respect to the flame | frame 50 may be what kind of thing, description is abbreviate | omitted.

  As the guide member 20, a first guide member 21 and a second guide member 22 for guiding the first guide member 21 are provided. The 1st guide member 21 exhibits the shape which follows the surface which faces the slit 10S in the 1st pad part 11, and is being fixed so that it may closely_contact | adhere to the said surface. The 2nd guide member 22 exhibits the shape which follows the surface which faces the slit 10S in the 2nd pad part 12, and is being fixed so that it may closely_contact | adhere to the said surface. That is, the 1st guide member 21 and the 2nd guide member 22 are provided along the slit 10S formed between the 1st pad part 11 and the 2nd pad part 12 (refer FIG. 2, FIG. 4 etc.). . In the present embodiment, both guide members are formed of a resin material, and are fixed (for example, sewn) to a pad cover 40 that covers each pad portion.

  As shown in detail in FIG. 5, the first guide member 21 and the second guide member 22 are rails that can slide in the longitudinal direction with respect to the other. The pair of guide members are provided with a restriction structure that restricts the movement of the first guide member 21 in the direction guided by the second guide member 22, that is, the direction intersecting the sliding direction. Such a regulation structure may be anything. The regulation structure in this embodiment is as follows.

  The first guide member 21 has a first main body portion 211 and a first engagement portion 212. The first main body portion 211 is a portion that is fixed to the surface of the first pad portion 11 that faces the slit 10S. The first engaging portion 212 is a portion provided on the second guide member 22 side in the first main body portion 211. The second guide member 22 has a second main body portion 221 and a second engagement portion 222. The second main body portion 221 is a portion fixed to the surface of the second pad portion 12 that faces the slit 10S. The second engaging portion 222 is a portion provided on the first guide member 21 side in the second main body portion 221. In a state where the first engagement portion 212 is engaged with the second engagement portion 222, a part of the first engagement portion 212 (in this embodiment, the hooked portion 212a provided on the first engagement portion 212). Is hooked on a part of the second engaging portion 222 (in this embodiment, the hooking portion 222a provided on the second engaging portion 222), and therefore, movement in the direction intersecting the sliding direction is restricted (however, In order to ensure a smooth slide, the clearance set between the two engaging portions can move). As described above, the first engagement portion 212 and the second engagement portion 222 form a slide structure in which the other guide member 20 slides relative to the one guide member 20 in the longitudinal direction. A regulation structure that regulates movement in the direction intersecting the slide direction is constructed.

  Although a pair of guide member 20 comprised from the 1st guide member 21 and the 2nd guide member 22 is provided along the slit 10S, it is good to provide two or more sets with respect to each slit 10S. In the present embodiment, two pairs of guide members 20 are provided for each slit 10S. Since each slit 10S in the present embodiment is along the width direction, a plurality of sets of guide members 20 provided in each slit 10S are arranged in the width direction (see FIG. 5).

  The shape adjusting means 30 shown in FIGS. 2 and 4 changes the shape of the first pad portion 11. The shape adjusting means 30 in this embodiment includes an extrusion mechanism 31 and an urging member 32. The pushing mechanism 31 is a member for pushing the first pad portion 11 forward. Various types of the pushing mechanism 31 are conceivable. For example, the first pad portion 11 may be pushed out by a piston that slides. The extrusion mechanism 31 in this embodiment has an expansion member 311. The inflatable member 311 is a bag body that inflates when gas (for example, air) is supplied to the inside. In order to improve cushioning properties, it is desirable that the material constituting the expansion member 311 has stretchability (elasticity). Further, the push-out mechanism 31 has a gas feeding means 312 for feeding gas to the expansion member 311. The gas supply means 312 may be any type and will not be described in detail, but may include a compressor capable of supplying compressed air.

  The expansion member 311 is provided behind the first pad portion 11. In this embodiment, the expansion member 311 swelled by the supplied gas has a shape such that a substantially central portion in the vertical direction protrudes most forward when viewed in a cross section cut by a plane orthogonal to the width direction. That is, the expansion member 311 is configured such that the front surface (first pad portion 11 side) has a mountain shape in the expanded state. Therefore, when the expansion member 311 expands, the first pad portion 11 changes in a mountain shape so as to follow the front surface of the expansion member 311 (see FIG. 4).

  The biasing member 32 biases the lower end portion of the first pad portion 11. In the present embodiment, one end of the urging member 32 is connected to the first pad portion 11 via the first guide member 21. The other end of the urging member 32 is connected to the outer frame member 53 of the frame 50. The urging member 32 in this embodiment is a coil spring, and the urging member 32 extends from the one end to the other end along the first guide member 21 (the first guide member 21 is directly extended toward the outer frame member 53 side. It is provided in an inclined state (to be along a straight line). That is, the urging force along the sliding direction of the first guide member 21 is set so as to act on the first guide member 21 (first pad portion 11).

  Although the operation of the vehicle seat 1 having such a configuration partially overlaps with the above description, it will be described in detail below.

  When no gas is supplied to the expansion member 311, that is, when the expansion member 311 is in a contracted state, the expansion member 311 is in a retracted state as shown in FIGS. 1 and 2. Specifically, the urging force of the urging member 32 acts on the lower end portion of the first pad portion 11 so that the lower end portion of the first pad portion 11 is pulled rearward. Since the upper end portion of the first pad portion 11 is a fixed end, the protrusion amount of the first pad portion 11 is reduced by pulling the lower end portion rearward. That is, the surface on the front side of the first pad portion 11 that is a surface that supports the occupant is almost flat.

  The push-out mechanism 31 is driven when changing from the stored state to a state in which the shoulder support function is exhibited (hereinafter also referred to as a use state). In this embodiment, gas is supplied to the expansion member 311 and the expansion member 311 is expanded. The expansion member 311 only needs to be set to expand when the user operates a switch or the like (not shown).

  When the expansion member 311 in the contracted state is expanded, the first pad portion 11 is deformed so that the central portion in the vertical direction of the first pad portion 11 is pushed by the expansion member 311 and displaced forward. . Since the upper end portion of the first pad portion 11 is a fixed end, the lower end portion is deformed to be displaced forward against the biasing force of the biasing member 32. Since the first guide member 21 that engages with the second guide member 22 fixed to the second pad portion 12 is fixed to the lower end portion side of the first pad portion 11, While being guided, the first pad portion 11 to which the first guide member 21 is fixed changes its shape.

  When the expansion member 311 fully expands and the front surface thereof has a mountain shape, the first pad portion 11 pushed by the expansion member 311 also has a mountain shape that follows the shape (see FIG. 4). That is, the portion that contacts the vicinity of the passenger's shoulder protrudes forward (see FIG. 3). As a result, it is possible to improve the sitting comfort when a stooped occupant sits on the seat. In addition, although the vehicle seat 1 according to the present embodiment is in a use state by swelling the expansion member 311 to the maximum extent, the first pad portion 11 can be changed by appropriately changing the degree of expansion of the expansion member 311. It is possible to adjust the degree of deformation.

  When the expansion member 311 can be contracted (the gas can be released after the gas supply is stopped), the lower end of the first pad portion 11 is moved backward by the biasing member 32. The first pad portion 11 is returned to the retracted state by being pulled. When the first pad portion 11 returns to the retracted state, the first pad portion 11 to which the first guide member 21 is fixed is changed in shape while being guided by the second guide member 22.

  Thus, when the vehicle seat 1 according to the present embodiment changes the shape of the first pad portion 11, the shape of the first pad portion 11 is guided while the first guide member 21 is guided to the second guide member 22. Changes. Therefore, occurrence of a state where the pad does not deform as set is suppressed.

  Moreover, since the control structure which controls that the 1st guide member 21 moves to the direction which cross | intersects the direction guide | induced to the 2nd guide member 22 is provided, when the guide parts leave | separate, It can suppress that a guidance function is impaired.

  Further, in the present embodiment, one end of the urging member 32 is connected to the first guide member 21 fixed to the first pad portion 11. That is, the first guide member 21 can be used as a member for attaching the urging member 32 for changing the shape of the first pad portion 11 (making the urging force act on the first pad portion 11). Further, since the urging force of the urging member 32 directly acts on the first guide member 21, both the guide members 20 when the urging force of the urging member 32 acts (when changing from the use state to the retracted state). The first pad portion 11 is smoothly guided.

  Further, since the urging member 32 is provided along the direction in which the first guide member 21 is inclined, the first pad portion 11 by the both guide members 20 when the urging force of the urging member 32 is applied. Is more smoothly guided (sliding operation of the guide member 20).

  Moreover, in this embodiment, the 1st pad part 11 in use condition becomes a mountain shape, and it inclines toward the location located in the foremost position in the 1st pad part 11 used as the said mountain shape. The first guide member 21 is fixed to the first pad portion 11. Accordingly, the first pad portion 11 is smoothly guided by the guide members 20 when the storage state is changed to the use state and when the use state is changed to the storage state.

  Further, in the present embodiment, since a plurality of pairs of guide members 20 are provided for each slit 10S, the first pad portion 11 deformed in the longitudinal direction of the slit 10S (the width direction in the present embodiment) is provided. Misalignment is suppressed.

  Here, when the first pad portion 11 in the retracted state is compared with the first pad portion 11 in the in-use state, the shape of a part of the first pad part 11 changes, but the other part. It can be seen that the shape of does not change. In the present embodiment, at least a part of a portion pushed by the expansion member 311 (a central portion of the first pad portion 11 in the vertical direction), specifically, a predetermined range in the vertical direction from the top of the “mountain” in the usage state. Although the portion is a changing portion 111 whose shape changes, part of both sides in the vertical direction is a maintaining portion 112 whose shape does not change. And the 1st guide member 21 is being fixed to the part used as the maintenance part 112 in the 1st pad part 11. FIG. Although depending on the configuration of the shape adjusting means 30, in the case of the push-out mechanism 31 using the expansion member 311 as in the present embodiment, the inner surface of the maintenance unit 112 is changed by being pushed by the push-out mechanism 31. Is not denied. That is, the maintenance part 112 can be said to be a part where the shape of at least the outer surface (the surface on which the first guide member 21 is fixed) does not change.

  Assuming that the guide member 20 is fixed to a portion where the shape of the first pad portion 11 changes, when the first pad portion 11 is deformed, the first guide member 21 slides smoothly with respect to the second guide member 22. There is a risk of not becoming. For example, the first guide member 21 may be inclined and caught on the second guide member 22. In this embodiment, since the 1st guide member 21 is being fixed to the maintenance part 112 in the 1st pad part 11, when the shape of the 1st pad part 11 changes, it will be in the state by which guidance is not made smoothly. Can be suppressed.

  As mentioned above, although embodiment of this invention was described in detail, this invention is not limited to the said embodiment at all, A various change is possible in the range which does not deviate from the summary of this invention.

  The vehicle on which the vehicle seat 1 according to the above embodiment is mounted may be any vehicle such as an automobile, a railway vehicle, and an aircraft.

  In the vehicle seat 1 according to the above embodiment, it has been explained that the first pad portion 11 is elastically deformed by the shape adjusting means 30, but the first pad portion 11 and the second pad portion 12 are completely separated. The first pad portion 11 is configured to change the relative position with respect to the second pad portion 12 without being deformed (for example, the first pad portion 11 slides in the front-rear direction with respect to the second pad portion 12). Also, the same technical idea as described above can be applied.

  Although the vehicle seat 1 according to the above-described embodiment has been described in which the shape of the first pad portion 11 is changed, the shape of the second pad portion 12 may be changed. That is, the shape of only one of the two pad portions to which the guide member 20 is fixed may be changed, or the shapes of both pad portions may be changed. Further, the portion of the pad member 10 where the shape changes may be at any position on the vehicle seat 2.

DESCRIPTION OF SYMBOLS 1 Vehicle seat 2 Seat back 10 Pad member 10S Slit 11 First pad part 111 Change part 112 Maintenance part 12 Second pad part 20 Guide member 21 First guide member 211 First main body part 212 First engagement part 22 Second Guide member 221 Second body portion 222 Second engagement portion 30 Shape adjusting means 31 Extrusion mechanism 311 Expansion member 32 Biasing member 50 Frame

Claims (7)

A pad member having a first pad portion and a second pad portion;
A shape adjusting means for changing the shape of the first pad portion;
A pair of guide members having a first guide member fixed to the first pad portion and a second guide member fixed to the second pad portion;
With
When the shape of the first pad portion is changed by the shape adjusting means, the shape of the first pad portion changes while the first guide member is guided to the second guide member. Sheet.   2. The vehicle according to claim 1, wherein the pair of guide members have a restricting structure that restricts movement of the first guide member in a direction intersecting a direction guided by the second guide member. Sheet. The first pad portion includes a changing portion whose shape changes when driven by the shape adjusting means, and a maintaining portion whose shape does not change,
The vehicle seat according to claim 1, wherein the first guide member is fixed to the maintaining portion. The first pad portion is
One end side opposite to the side on which the first guide member is provided is fixed,
The other end side, which is the side on which the first guide member is provided, is biased by a biasing member that the shape adjusting means has,
4. The vehicle seat according to claim 1, wherein the urging member is connected to the first guide member. 5. The shape adjusting means is
An extruding mechanism that extrudes the first pad portion forward and deforms the portion between the one end side and the other end side of the first pad portion so as to be displaced forward;
The biasing member for returning the first pad portion deformed by the push-out mechanism to the original state;
The vehicle seat according to claim 4, further comprising:   The said 1st guide member is being fixed to the said 1st pad part so that it may incline toward the location side located in the foremost position in the said 1st pad part deform | transformed by the said extrusion mechanism. 5. The vehicle seat according to 5.   The urging member has one end side connected to the first guide member and the other end side connected to a frame that supports the pad member, along the direction in which the first guide member is inclined. The vehicle seat according to claim 6.

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