JP2009095596A - Canopy device for vehicle seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress a moving space required for storing and unfolding a canopy body to be small. <P>SOLUTION: The canopy device 5 is provided with a canopy body 10 used by being put on the head of a crew sitting on a vehicle seat 1. The canopy body 10 is connected to a vehicle body through a moving mechanism 11 capable of moving it between an unfolded position at which it is put on the head of the crew and a stored position at which it is retreated to the side behind the vehicle seat 1 while sinking it downwards. The canopy body 10 is moved by the moving mechanism 11 in a state where the backrest angle of the seat back 2 of the vehicle seat 1 is brought down to the rear side relative to a standard angle for sitting use at normal time. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle seat canopy device. More specifically, the present invention relates to a vehicle seat canopy device including a canopy body that is used while being covered by the head of an occupant seated in a vehicle seat.

  2. Description of the Related Art Conventionally, some vehicle seats are provided with a dome-type canopy device that is used while being covered by a head of a seated person. For example, Patent Document 1 below discloses a technique in which a canopy body is disposed at a shoulder position of a seat back so as to be housed and deployed.

JP 2007-105225 A

  However, in the prior art disclosed above, the canopy body is configured to be stored and deployed through a narrow gap between the seated person's head and the vehicle body ceiling. Therefore, for example, when the seated person is tall and the head overhangs on the development trajectory of the canopy body, the movement of the canopy body may be hindered.

  The present invention was created to solve the above-described problems, and the problem to be solved by the present invention is a positional relationship in which the storage deployment movement of the canopy body interferes with the body of the seated person. In other words, the canopy body can be favorably moved while avoiding this interference.

In order to solve the above problems, the vehicle seat canopy device of the present invention takes the following means.
A first aspect of the present invention is a vehicle seat canopy device including a canopy body that is used while being covered by a head of an occupant seated on a vehicle seat. The canopy body is connected to the vehicle body via a moving mechanism that allows the canopy body to move between a deployed position that covers the head of the occupant and a storage position that is out of the deployed position. The canopy body is moved and unfolded by the moving mechanism, and the height position of the seated person's body is lowered to a position that deviates from the locus of the storage and unfolding movement of the canopy body by a variable mechanism that can change the posture of the vehicle seat. It is to be performed in the state.
According to the first aspect of the present invention, the canopy body is stored and deployed in a state where the height position of the seated person's body is lowered to a position where it does not interfere with the canopy body by the variable mechanism. Therefore, even if the storage deployment movement of the canopy body interferes with the seated person's body, the canopy body can be favorably moved while avoiding this interference.

Next, according to a second aspect of the present invention, in the first aspect described above, the structure of the variable mechanism that can change the posture of the vehicle seat is used when the backrest angle of the seat back of the vehicle seat is normally seated. The height of the seated person's body is lowered by tilting backward with respect to the standard angle.
According to the second aspect of the present invention, the seat back's backrest angle is tilted by the variable mechanism, so that the upper body of the seated person is tilted backward and the height position thereof is lowered. Therefore, the canopy body can be favorably moved while avoiding interference between the canopy body and the occupant's body.

  Embodiments of the best mode for carrying out the present invention will be described below with reference to the drawings.

First, the configuration of the vehicle seat canopy device according to the first embodiment will be described with reference to FIGS.
Here, FIG. 1 is a perspective view showing a schematic configuration of the vehicle seat 1 of the present embodiment. The vehicle seat 1 is disposed as a rear seat of a vehicle having a two-row front and rear seat configuration. The vehicle seat 1 includes a seat back 2 that serves as a backrest, a seat cushion 3 that serves as a seating portion, and a headrest 4 that serves as a headrest.

  The vehicle seat 1 has a configuration in which both side portions and upper portions thereof are covered from the rear side with respect to the vehicle body by a vehicle body structure B such as a luggage board L. The vehicle body structure B is provided with a canopy device 5 including a dome-shaped canopy body 10 that can cover the head of an occupant (sitting person) seated on the vehicle seat 1. The canopy device 5 includes a dome-shaped canopy main body 10 and a drive device 20 for storing and unfolding the canopy main body 10.

  The canopy body 10 is electrically driven by the drive device 20 between the retracted position covering the back side of the vehicle seat 1 shown in FIG. 2 and the deployed position covering the head of the occupant shown in FIG. Can be rotated. Here, the canopy body 10 is formed in a curved dome-shaped outer shell shape by a transparent material such as polycarbonate or acrylic resin. The canopy body 10 is sprayed with a synthetic resin having low transparency on the inner surface side. As a result, the internal space covered by the dome-shaped canopy body 10 is formed as a private space that is difficult to see from the outside.

  As shown in FIG. 2, the above-described canopy body 10 is held in the retracted position retracted to the rear side of the vehicle seat 1 when not in use. Specifically, as shown in FIG. 1, the canopy main body 10 is stored in a position on the back side of the seat back 2 by entering the gap formed between the luggage board L and the seat back 2. It has become. When the canopy body 10 is used, the canopy body 10 rotates and moves forward about the connecting shaft A <b> 1 as the driving device 20 described later is driven. The configuration of the connecting shaft A1 will be described in detail later.

  As a result, as shown in FIG. 3, the canopy body 10 is in a deployed position with its dome shape covering the occupant's head. The storage deployment movement of the canopy main body 10 is performed in a narrow gap between the vehicle seat 1 that is the rear side seat and the ceiling C. However, even in such a narrow gap, the canopy body 10 can be moved and deployed in a small movement space without interfering with the ceiling C by rotating around the connecting axis A1.

  Specifically, as shown in FIG. 3, the canopy main body 10 is moved and retracted so that the backrest angle of the seat back 2 is tilted backward with respect to the standard angle used in normal seating (posture angle in FIG. 2). It is done in a state where it is locked. Here, with reference to FIG. 2, in the state where the backrest angle of the seat back 2 is a standard angle, the vehicle seat 1 has a passenger's head (body) on the locus of deployment movement of the canopy body 10. Is configured to be located.

  However, as shown in FIG. 3, when the canopy body 10 is deployed and moved, the backrest angle of the seat back 2 is collapsed, and the height position of the occupant's head is lowered. Specifically, the height position of the head is lowered to a position that deviates from the locus of the storage deployment movement of the canopy body 10. Thereby, even if the storage deployment movement of the canopy body 10 has a positional relationship that interferes with the occupant's head (body), the canopy body 10 can be favorably moved while avoiding this interference.

  On the other hand, the drive device 20 is fixedly installed on the vehicle body structure B at a position hidden under the luggage board L, as shown in FIG. The drive device 20 is connected to the canopy main body 10 described above, and the canopy main body 10 can be accommodated and unfolded by its electric drive. Hereinafter, the assembly structure of the canopy body 10 and the configuration of the drive device 20 will be described in detail.

  First, the configuration of the canopy body 10 will be described with reference to FIG. In the canopy main body 10, plate portions on both end sides of the outer shell shape curved in a hood shape are respectively connected to a base plate 21 of a driving device 20 described later by a moving mechanism 11. The moving mechanism 11 on the side shown in the figure is connected in a state where power can be transmitted from the electric motor 22 of the drive device 20 provided on the same side. Thereby, the canopy main body 10 receives the power transmission from the drive device 20 and moves and unfolds.

  Here, the moving mechanism 11 includes disk-shaped rotating plates 11 </ b> A and 11 </ b> B attached to the end plate portion of the canopy body 10. Specifically, the rotating plate 11 </ b> A is attached in such a manner that the plate surface is superposed on the inner plate surface of the canopy body 10. A connecting shaft A1 extending in the axial direction from the center is integrally formed on the rotating plate 11A.

  Next, the rotating plate 11 </ b> B is attached to the outer plate surface of the canopy body 10 in such a manner that the plate surface is superposed. On the outer peripheral edge of the rotating plate 11B, projections B1 and B2 projecting outward in the radial direction are formed at two positions spaced apart from each other in the circumferential direction. The rotating plates 11A and 11B are assembled integrally with the canopy body 10 so as to sandwich the plate portion of the canopy body 10 by screwing and fastening three fastening screws 10A that pass through the canopy body 10. ing.

  Here, the connecting shaft A1 formed on the rotary plate 11A described above is inserted through the plate portion of the canopy body 10 and the central portion of the rotary plate 11B in the plate thickness direction. The connecting shaft A1 is inserted through the base plate 21 of the driving device 20 described later, and is pivotally connected to the base plate 21 so as to be rotatable. As a result, the rotary plates 11A and 11B are pivotally connected to the base plate 21 by the connecting shaft A1.

  The connecting shaft A1 is integrally connected to the pulley 23B of the driving device 20 at the end through which the connecting shaft A1 is inserted. As a result, the connecting shaft A1 is rotated by receiving power transmitted from the drive device 20, as will be described in detail later. Here, a bush 25 is provided at a portion where the connecting shaft A1 is inserted into the base plate 21. Accordingly, a gap is provided between the rotating plate 11B and the base plate 21 so that the rotating plate 11B and the base plate 21 are not in direct contact with each other, so that the rotational movement of the rotating plate 11B is not hindered. A claw-shaped stopper 11C is integrally attached to the base plate 21 so as to enter the space between the protrusions B1 and B2 formed on the rotating plate 11B.

  The moving mechanism 11 having the above configuration rotates and moves the canopy body 10 integrated with the rotating plate 11 </ b> A when the connecting shaft A <b> 1 rotates upon receiving power transmission from the driving device 20. For example, referring to FIG. 4, when the canopy main body 10 is rotated about the connecting shaft A <b> 1 in the clockwise direction in the figure, the rear projection B <b> 1 formed on the rotating plate 11 </ b> B is provided on the base plate 21. It comes into contact with the stopper 11C. As a result, the clockwise rotation of the canopy main body 10 is stopped, and the canopy main body 10 rotates forward from the storage position behind the seat back 2 as shown in FIG. It will be in the state stopped in the deployment position which covered the head of.

  The canopy body 10 that has moved to the unfolded position is stored on the back side of the vehicle seat 1 when the connecting shaft A1 receives power transmitted from the drive device 20 and rotates in the direction opposite to the unfolded position. Operated. Specifically, referring to FIG. 4, when connecting shaft A <b> 1 rotates counterclockwise in the drawing, canopy body 10 rotates together with this in the same direction. As a result, the front protrusion B2 formed on the rotating plate 11B comes into contact with the stopper 11C. Thereby, the counterclockwise rotational movement of the canopy main body 10 is stopped, and the canopy main body 10 is stopped at the storage position behind the seat back 2 as shown in FIG.

  Note that the moving mechanism 11 described above is arranged and formed in the same manner in the connecting portion on the left side in FIG. 1, but the connecting shaft A1 (see FIG. 4) is not connected to the drive device 20, It is simply configured to be pivotally connected to the base plate 21 so as to be rotatable. In other words, the canopy main body 10 is configured such that the operation of storing and unfolding is performed by driving the connecting shaft A1 on one side connected to the driving device 20.

  Next, the configuration of the drive device 20 will be described. That is, the drive device 20 has a configuration in which various operating components such as the electric motor 22 are assembled to the base plate 21 serving as the mounting substrate. Here, as shown in FIG. 1, the base plate 21 is formed in a U-shaped shape that wraps around both sides of the seat back 2 from the rear side. The base plate 21 has a gap between the base plate 21 and the seat back 2 due to its U shape, so that the base plate 21 does not interfere with the storage deployment movement of the canopy body 10. As shown in FIG. 4, a standing plate portion 21A is erected on the right side of the base plate 21 in the drawing, and an electric motor 22 is attached to the inner side surface portion of the standing plate portion 21A. Yes.

  Note that the stopper 11C and the bush 25 described above are attached to the front end side portion of the inner side surface portion of the same plate portion 21A. As shown in FIG. 2, a pulley 23A connected to the electric motor 22 is disposed on the outer surface portion of the upright plate portion 21A, and a pulley 23B is engaged with the V-belt 24 between the pulley 23A. And are attached. As shown in FIG. 4, a connecting shaft A1 is inserted into the pulley 23B and integrally connected thereto.

  As a result, the connecting shaft A <b> 1 is rotated integrally with the pulley 23 </ b> B as the electric motor 22 is driven to rotate. A guide 26 for preventing the slack of the V belt 24 is attached to the standing plate portion 21A. Although not shown, the electric motor 22 is driven and rotated by operating an operation switch provided on the vehicle seat 1 so that the canopy main body 10 is moved and retracted. Yes.

  Next, a mechanism (variable mechanism) that tilts the seat back 2 backward when the canopy body 10 is stored and deployed will be described. Here, as shown in FIG. 2, the seat cushion 3 is connected to the floor via a slider device 7 provided at a lower portion thereof. The slider device 7 includes an upper rail 7A fixedly installed on the lower surface portion of the seat cushion 3 and a lower rail 7B fixedly installed on the floor. The upper rail 7A and the lower rail 7B are formed in a rail shape extending in the front-rear direction of the vehicle, and are configured to be fitted so as to be slidable in the rail extending direction.

  Accordingly, the seat cushion 3 is configured such that the seating position on the floor moves back and forth as the upper rail 7A slides back and forth with respect to the lower rail 7B. The sliding movement of the upper rail 7A is not shown in the figure, but is performed by the operation of an actuator that operates by receiving an electric driving force from a driving portion 7C provided on the seat cushion 3.

  An operation arm 3 </ b> A that extends rearward toward the back surface of the seat back 2 is integrally attached to the lower surface of the seat cushion 3. The operation arm 3 </ b> A has an end portion extending rearwardly connected to a lower end arm 2 </ b> B integrally provided at a lower end portion on the back side of the seat back 2 so as to be rotatable. As a result, the seat back 2 receives the movement of the seat cushion 3 sliding in the front-rear direction of the vehicle, and the lower end portion thereof is pushed and pulled by the operation arm 3A.

  Here, the seat back 2 is integrally provided with an engagement arm 2 </ b> A that protrudes toward the vehicle rear side in the middle part on the back side. A slide pin 2P that engages with a long hole G formed in the vehicle body structure B on the rear side of the seat back 2 is attached to the engagement arm 2A. As a result, the seat back 2 has a lower end portion connected to the seat cushion 3 by the above-described connection structure of the operation arm 3A, and a middle portion of the seat back 2 by the engagement structure of the slide pin 2P. It is connected to B.

  Here, the long hole G is formed in a shape extending upward in the drawing. The slide pin 2P is located at the upper right end of the long hole G when the seat cushion 3 is in the slide position (shown in the figure) where the seat cushion 3 is normally seated and used. As shown in FIG. 3, the slide pin 2 </ b> P slides toward the lower left end of the long hole G as the seat cushion 3 slides forward from the above-described slide position.

  Thereby, while the seating position of the seat cushion 3 slides to the front side, the backrest angle of the seat back 2 is brought into the rear side. As a result, the height position of the occupant's head seated on the vehicle seat 1 can be lowered to the lower side without greatly shifting the front / rear position to the rear side.

  Here, an ottoman device 6 that can be used as a footrest for an occupant is disposed on the front surface of the seat cushion 3. When the ottoman device 6 is used, the drive portion 6A incorporated in the seat cushion 3 is electrically driven to raise the plate-like footrest 6B from the front portion of the seat cushion 3 forward. Yes. The operation of the drive unit 6A that raises the footrest 6B is performed simultaneously with the operation of tilting the backrest angle of the seat back 2 to the rear side.

  Therefore, the operation of the ottoman device 6 causes the vehicle seat 1 to be in a posture state in which the seated occupant can be in a relaxed posture in which the back part of the vehicle occupant is tilted backward and both legs are extended forward. The driving operation of the slider device 7 and the ottoman device 6 that bring the vehicle seat 1 into a relaxed posture is performed together by operating the operation switch (not shown) that houses and unfolds the canopy body 10 described above.

  Specifically, when the operation switch is operated, first, before the canopy body 10 is unfolded, the seat cushion 3 is slid up and moved to the use position of the footrest 6B. Thereafter, the canopy main body 10 is moved from the storage position to the deployed position. Therefore, the deployment movement of the canopy main body 10 is performed in a state where the height position of the head of the occupant is sunk downward.

  When the canopy body 10 is stored, when the operation switch is operated, the canopy body 10 is first moved to the storage position. Then, after that, the seat cushion 3 is returned to the normal seating use position, and the ottoman device 6 is folded into the front portion of the seat cushion 3 (see FIG. 2). Therefore, the canopy main body 10 is also stored and moved in a state where the height position of the head of the occupant is sunk downward.

  Thus, according to the vehicle seat canopy device of the present embodiment, the canopy main body 10 is stored and moved in a position where the height position of the body (head) of the seated person does not interfere with the canopy main body 10 by the variable mechanism. It is performed in the state lowered to. Specifically, when the backrest angle of the seat back 2 is tilted by the variable mechanism, the upper body of the seated person is tilted backward and the height position thereof is lowered. Therefore, even if the storage deployment movement of the canopy body 10 interferes with the seated person's body, the canopy body 10 can be favorably moved while avoiding this interference.

Although the embodiment of the present invention has been described with one example, the present invention can be implemented in various forms in addition to the above example.
For example, the shape of the canopy body only needs to be a shape that can cover the head of the occupant, and does not have to be formed in a dome shape.
In addition, the configuration in which the entire vehicle seat is switched to the relax mode posture state when moving the canopy body to accommodate and deploy is exemplified, but only the seat back may be tilted backward. Even in this case, the canopy body can be moved in a state where the height position of the head of the occupant is depressed. Further, the variable mechanism that lowers the height position of the head of the occupant may be configured by another mechanism structure that sinks the height position of the entire vehicle seat.
Further, the moving mechanism for moving the canopy main body may be configured by another motion mechanism that involves a sinking movement such as a four-bar linkage mechanism.

1 is an overall perspective view of a vehicle seat provided with a canopy device. It is a side view showing the storage state of the canopy device. It is a side view showing the development state of a canopy device. It is a disassembled perspective view showing the assembly structure of a canopy main body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle seat 2 Seat back 2A Engagement arm 2P Slide pin 2B Lower end arm 3 Seat cushion 3A Operation arm 4 Headrest 5 Canopy device 6 Ottoman device 6A Drive part 6B Footrest 7 Slider device 7A Upper rail 7B Lower rail 7C Drive part 10 Canopy body 10A Fastening screw 11 Moving mechanism 11A, 11B Rotating plate A1 Connecting shaft B1, B2 Protrusion 11C Stopper 20 Drive device 21 Base plate 21A Standing plate portion 22 Electric motor 23A, 23B Pulley 24 V belt 25 Bush 26 Guide B Car body structure L Luggage board C Ceiling G Long hole

Claims (2)

A vehicle seat canopy device comprising a canopy body used by being covered by a head of an occupant seated on a vehicle seat,
The canopy main body is connected to the vehicle body via a moving mechanism that enables movement between a deployment position that covers the head of the occupant and a storage position that deviates from the deployment position.
The storage deployment movement of the canopy body by the movement mechanism is a position where the height position of the seated person's body deviates from the locus of the storage deployment movement of the canopy body by a variable mechanism capable of changing the posture of the vehicle seat. A canopy device for a vehicle seat, which is performed in a lowered state. The vehicle seat canopy device according to claim 1,
The structure of the variable mechanism capable of changing the posture of the vehicle seat is a seated person by tilting the backrest angle of the seat back of the vehicle seat backward relative to the standard angle used for normal seating. A canopy device for a vehicle seat, characterized in that the height position of the body of the vehicle is lowered.

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