JP5456247B2 - Vehicle seat canopy device - Google Patents

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 device is disposed at a shoulder opening position of a seat back so as to be stored and deployed. In this disclosure, a dome-shaped canopy body that covers the head of a seated person is divided into a front and a rear by a plurality of shell bodies. In these shell bodies, the plate portions on both end sides thereof are pivotally connected to each other, so that the shell bodies can be rotated and moved to overlap or unfold each other. Thereby, when the canopy body is not in use, the shell bodies can be stacked so as not to be bulky.
The canopy main body is connected to both shoulder openings of the seat back via a four-bar link. As a result, the canopy body can be stored and deployed between the retracted position around the back of the seat back and the extended position protruding to the seated person's head position in accordance with the link movement of the four-bar link. ing.

JP 2007-105225 A

  However, in the prior art disclosed above, since the link movement of the four-bar link is used for the storage deployment movement of the canopy body, a large space is required for the movement.

  The present invention has been devised as a solution to the above-described problems, and the problem to be solved by the present invention is to keep the moving space required for the storage and deployment of the canopy body small.

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 has a base and a cover. The base is pivotally connected to a fixed body such as a vehicle seat or a vehicle body so as to be rotatable. The cover portion is pivotally connected to the base portion, and is capable of rotational movement between a deployment position where the head portion of the occupant is covered and a storage position where the base portion and the outer shell shape are overlapped with each other. . When the canopy body is not used, the base portion is in a retracted position that is retracted to the rear side of the vehicle seat due to the connection structure with the fixed body. However, when the canopy body that moves the cover portion to the unfolded position is used, the base portion is in a use position that is moved closer to the head of the occupant from the retracted position. The first connecting shaft that pivotally connects the cover portion to the base portion so as to be rotatable and the second connecting shaft that pivotally connects the base portion to the fixed body so that the cover portion can be rotationally moved are arranged at coaxial positions. Is set.
According to the first aspect of the present invention, the rotational movement that the base of the canopy body performs with respect to the fixed body is performed around the same axis as the rotational movement that the cover portion performs with respect to the base. And the cover part can be switched to a compact storage state in which the base part and the outer shell shape of each other are superposed by rotational movement with respect to the base part. Accordingly, the rotational movement of the base portion and the cover portion around one axis can reduce the movement space required for storing and deploying the canopy body.

Next, according to a second aspect, in the first aspect described above, the canopy body is formed by a dome-shaped shield that can cover the head of the occupant from above. The base is formed by a curved outer shell-shaped shield that forms part of a dome shape. The cover portion forms a dome shape that is continuous from the base portion when in the unfolded position state, and is curved to superimpose the outer shell shape at the inner surface side or outer surface side position of the base portion when in the retracted position state. It is formed by an outer shell shaped shield.
According to the second aspect of the invention, both the cover and the base are rotated and moved in a manner that draws an arc along the dome shape by the outer shell shape of the curved shield that forms a part of the dome shape of the canopy body. Accordingly, it is possible to further reduce the movement space required for the storage and deployment of the canopy body.

Next, according to a third invention, in the first or second invention described above, the cover portion is configured to be in the deployed position by moving to the front side of the vehicle seat with respect to the base portion. . In response to the movement of the cover portion moving backward toward the storage position, the base portion moves from the use position to the retracted position.
According to the third aspect of the present invention, the canopy body is configured to retreat upon receiving the movement of the cover portion in the storage direction, so that the storage movement of the cover portion and the retraction movement of the canopy body are chained. It can be carried out.

Next, according to a fourth aspect of the present invention, in any one of the first to third aspects described above, the canopy body is pivotally connected so as to be rotatable with respect to the vehicle body.
According to the fourth aspect of the invention, the canopy main body is always stored and deployed with a constant rotation miracle with respect to the vehicle body even when the backrest angle or seating position of the vehicle seat is changed. Therefore, a moving space required for storing and deploying the canopy body with respect to the vehicle body is suppressed to a small size.

  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. Here, the vehicle body structure B corresponds to the fixed body of the present invention. 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 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 driving device 20 between an operating position that covers the head of the passenger shown in FIG. 2 and a retracted position that wraps around the back side of the vehicle seat 1 shown in FIG. Can be moved. Here, as shown in FIG. 2, the canopy body 10 is configured by a combination of three shields (first shield 11, second shield 12, and third shield 13) divided in the front and rear directions.

  The first shield 11 to the third shield 13 are each formed of a transparent material such as polycarbonate or acrylic resin into a hood-like outer shell shape that forms a part of the dome shape of the canopy body 10. Specifically, as shown in FIG. 5, the second shield 12 is formed in an outer shell shape that is slightly larger than the outer shell shape of the first shield 11. The third shield 13 is formed in an outer shell shape that is slightly larger than the outer shell shape of the second shield 12.

  Returning to FIG. 1, the first shield 11 to the third shield 13 are sprayed with a synthetic resin having low transparency on the inner surface side thereof. 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.

  Here, as shown in FIG. 3, the canopy body 10 is held in a retracted position in which the canopy body 10 is retracted to the rear side of the vehicle seat 1 when not in use. In this retracted position, the first shield 11 and the second shield 12 are positioned so as to overlap each other on the inner surface side of the third shield 13, so that the first shield 11 to the third shield 13 are the outer shells of each other. The storage state is a polymerization of the shape. Here, as shown in FIG. 1, a gap is formed between the luggage board L and the seat back 2 for receiving the retreat movement of the canopy body 10.

  As shown in FIG. 2, when the canopy body 10 is used, the first shield 11 and the second shield 12 are directed toward the direction in which the first shield 11 covers the head of the occupant as the driving device 20 described later is driven. From the superposed storage position, it rotates and moves forward about the connecting shaft A1. The configuration of the connecting shaft A1 will be described in detail later. In conjunction with this movement, the second shield 12 also rotates forward from the storage position overlapped with the third shield 13 around the connection axis A1 in the same manner as the first shield 11. Further, in conjunction with this movement, the third shield 13 also rotates and moves forward from the retracted position on the back side of the vehicle seat 1 described above about the connecting shaft A1 to the state of the use position shown in the figure. Become.

  Therefore, by this rotational movement, as shown in the figure, the first shield 11 is in a deployed position in which the rear edge is slightly overlapped with the front edge of the second shield 12. . And the 2nd shield 12 will also be in the state of the expansion | deployment position which slightly overlap | superposed the edge part of the back side with the edge part of the front side of the 3rd shield 13 by the rotational movement. As a result, the canopy body 10 is developed in a dome shape by the continuous outer shell shape from the first shield 11 to the third shield 13.

  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.

  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. The canopy main body 10 includes a base plate of a driving device 20, which will be described later, by connecting mechanisms 14, which are plate-like on the outer shells of the first shield 11, the second shield 12, and the third shield 13. 21 is connected. The connecting mechanism 14 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. As a result, the canopy main body 10 can receive the power transmitted from the drive device 20 and perform the storage and unfolding movement of the first shield 11 to the third shield 13 in conjunction with each other.

  Here, the coupling mechanism 14 includes disk-shaped rotating plates 14 </ b> A to 14 </ b> F attached to the plate portions on the end side of the first shield 11 to the third shield 13. Specifically, the rotating plate 14 </ b> A is attached in such a manner that the plate surface is superposed on the inner plate surface of the first shield 11. A connecting shaft A1 extending in the axial direction from the center is integrally formed on the rotating plate 14A.

  Next, the rotating plate 14 </ b> B is attached to the outer plate surface of the first shield 11 in such a manner that the plate surface is superposed. On the outer peripheral edge of the rotating plate 14B, 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 rotary plates 14A and 14B are integrated with the first shield 11 so as to sandwich the plate portion of the first shield 11 by screwing and fastening three fastening screws 11A that pass through the first shield 11. It is assembled to.

  Next, the rotating plate 14 </ b> C is attached in such a manner that the plate surface is superposed on the inner plate surface of the second shield 12. As shown in FIG. 5, the rotating plate 14 </ b> C is assembled side by side as a state in which the rotating plate 14 </ b> B described above and the respective plate surfaces are superposed. Returning to FIG. 4, the rotating plate 14C is formed with a claw portion C1 so as to protrude into the space between the protrusions B1 and B2 formed on the rotating plate 14B.

  Next, the rotating plate 14 </ b> D is attached to the outer plate surface of the second shield 12 in such a manner that the plate surface is superposed. On the outer peripheral edge of the rotating plate 14D, projections D1, D2 projecting outward in the radial direction are formed at two positions spaced apart from each other in the circumferential direction. The rotating plates 14C and 14D are integrated with the second shield 12 so as to sandwich the plate portion of the second shield 12 by screwing and fastening the three fastening screws 12A that pass through the second shield 12. It is assembled to.

  Next, the rotating plate 14 </ b> E is attached in such a manner that the plate surface is superposed on the inner plate surface of the third shield 13. As shown in FIG. 5, the rotating plate 14 </ b> E is assembled side by side as a state in which the rotating plate 14 </ b> D described above and the respective plate surfaces are superposed. Returning to FIG. 4, the rotating plate 14E is formed with a claw E1 protruding so as to enter the space between the protrusions D1 and D2 formed on the rotating plate 14D.

  Next, the rotating plate 14 </ b> F is attached in such a manner that the plate surface is superposed on the outer plate surface of the third shield 13. On the outer peripheral edge of the rotating plate 14F, projections F1 and F2 projecting outward in the radial direction are formed at two positions spaced apart from each other in the circumferential direction. The rotating plates 14E and 14F are integrated with the third shield 13 so as to sandwich the plate portion of the third shield 13 by screwing and fastening the three fastening screws 13A that pass through the third shield 13. It is assembled to.

  Here, the connecting shaft A1 formed on the rotary plate 14A described above is inserted through the central portion of each of the rotary plates 14B to 14F, the second shield 12 and the third shield 13 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 rotating plates 14A to 14F 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. A bush 25 is provided at a portion where the connecting shaft A1 is inserted into the base plate 21. Thus, a gap is provided between the rotating plate 14F and the base plate 21 so that the rotating plate 14F and the base plate 21 are not in direct contact with each other so that the rotational movement of the rotating plate 14F is not hindered. A claw-shaped stopper 14G is integrally attached to the base plate 21 so as to enter the space between the projections F1 and F2 formed on the rotating plate 14F.

  The connection mechanism 14 configured as described above first rotates the first shield 11 that is integral with the rotating plate 14 </ b> A when the connection shaft A <b> 1 rotates upon receiving power transmission from the drive device 20. For example, referring to FIG. 4, when the first shield 11 rotates about the connecting axis A1 in the clockwise direction in the figure, the rear protrusion B1 formed on the rotating plate 14B is formed on the rotating plate 14C. It interferes with the formed claw part C1. As a result, the second shield 12 is pushed by the protrusion B1, and rotates in a clockwise direction in the figure integrally with the first shield 11.

  When the clockwise rotation of the first shield 11 further proceeds, the rear protrusion D1 formed on the rotating plate 14D interferes with the claw portion E1 formed on the rotating plate 14E. As a result, the third shield 13 is pushed by the protrusion D1, and rotates in a clockwise direction in the figure integrally with the first shield 11 and the second shield 12. The rotational movement of the third shield 13 is stopped when the rear projection F1 formed on the rotating plate 14F comes into contact with the stopper 14G. As a result, the clockwise rotation of the first shield 11 to the third shield 13 is stopped.

  Accordingly, as shown in FIG. 1, the third shield 13 is rotated forward from the retracted position on the rear side of the vehicle seat 1 by the rotational movement of the first shield 11 to the third shield 13 described above. At the use position, the rotational movement is held in a stopped state. And the 2nd shield 12 is hold | maintained in the state which the rotational movement was stopped in the expansion | deployment position which rotationally moved ahead with respect to the 3rd shield 13 in this use position. And the 1st shield 11 is hold | maintained in the state by which the rotational movement was stopped in the expansion | deployment position which rotationally moved ahead with respect to the 2nd shield 12 in this expansion | deployment position.

  The canopy body 10 deployed in the dome shape is connected to the back side of the vehicle seat 1 by rotating the connecting shaft A1 in the direction opposite to the deployed direction upon receiving power transmission from the driving device 20. The storage operation is performed. Specifically, as can be seen with reference to FIG. 4, when the connecting shaft A <b> 1 rotates counterclockwise in the drawing, the first shield 11 rotates together with the first shield 11 in the same direction. As a result, the front projection B2 formed on the rotating plate 14B interferes with the claw portion C1 formed on the rotating plate 14C. As a result, the second shield 12 is pushed by the protrusion B2 and rotates in a counterclockwise direction in the figure integrally with the first shield 11.

  When the counterclockwise rotational movement of the first shield 11 further proceeds, the front protrusion D2 formed on the rotating plate 14D interferes with the claw portion E1 formed on the rotating plate 14E. As a result, the third shield 13 is pushed by the protrusion D2, and rotates in a counterclockwise direction in the figure integrally with the first shield 11 and the second shield 12. The rotational movement of the third shield 13 is stopped when the front projection F2 formed on the rotating plate 14F comes into contact with the stopper 14G. Thereby, the counterclockwise rotational movement of the first shield 11 to the third shield 13 is stopped.

  Therefore, as shown in FIG. 1, the rotational movement of the third shield 13 is stopped at the retracted position behind the vehicle seat 1 by the rotational movement of the first shield 11 to the third shield 13 described above. Is kept in the state where And the 2nd shield 12 is hold | maintained in the state which the rotation movement was stopped in the storage position which superposed | stacked each outer shell shape on the inner surface side of the 3rd shield 13 in this retracted position. And the 1st shield 11 is hold | maintained in the state which the rotation movement was stopped in the storage position which superposed | stacked each outer shell shape on the inner surface side of the 2nd shield 12 in this storage position.

  The connecting mechanism 14 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 driving 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.

  The stopper 14G 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.

  As described above, according to the vehicle seat canopy device of the present embodiment, the cover portion (the first shield 11 and the second shield 12) of the canopy main body 10 performs the rotational movement performed on the vehicle body structure B by the cover portion. This is performed around the same axis as the rotational movement performed on the base (third shield 13). And the cover part can be switched to a compact storage state in which the base part and the outer shell shape of each other are superposed by rotational movement with respect to the base part. Therefore, the rotational movement of the canopy main body 10 can be reduced by the rotational movement around the same axis.

  Then, the first shield 11 to the third shield 13 rotate and move in a manner that draws an arc along the dome shape by the curved outer shell shape forming a part of the dome shape of the canopy body 10. Therefore, the movement space required for storing and deploying the canopy body 10 can be further reduced. The entire canopy body 10 is configured to retreat in response to the movement of the first shield 11 in the storage direction, so that the storage movement of the first shield 11 and the retraction movement of the entire canopy body 10 are linked. Can be done.

  Since the canopy main body 10 is connected to the vehicle body structure B instead of the seat back 2, the canopy main body 10 can be attached to the vehicle body even if the backrest angle or the seating position of the vehicle seat 1 is changed. It is always stored and developed with a constant rotation miracle. Therefore, the movement space for storing and deploying the canopy main body 10 with respect to the vehicle body can be kept small.

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.
Moreover, the 1st shield and 2nd shield which are the cover parts of a canopy main body may be the structure of the one-piece which was mutually integrated. However, in this case, it is necessary to provide a storage structure in which a large shield formed in an integrated shape can be stored in a retracted position behind the vehicle seat.

Moreover, although the example in which the third shield is configured as the base is shown, the base does not necessarily have to form a part of the cover shape covering the head. In other words, the base may be configured as a base member for storing and developing from which the covering portion is expanded and stored.
The size relationship between the shields of the canopy body may be a size relationship in which the second shield and the third shield are accommodated on the inner surface side of the first shield.

  Further, the first shield may be configured as a base portion of the present invention, and the second shield or the third shield may be a cover portion. As a specific example of such a configuration, for example, based on the configuration shown in the above embodiment, after the first shield moves forward, the second shield and the third shield are moved rearward from the first shield. It is to expand and move. The second shield may be configured as a base portion of the present invention, and the first shield and the third shield may be configured as a cover portion that opens in an umbrella shape from the second shield.

  In addition, even if the base (third shield) is configured integrally with the cover (first shield or second shield), the cover is configured to expand and contract in a bellows shape with rotational movement. Good. Moreover, although the structure which the rotational movement of a base part interlock | cooperates with the rotational movement of a cover part was shown, you may become a structure directly driven by each drive device.

Further, the storage movement of each shield can be ordered in the relative movement between the shields by adjusting the magnitude of the sliding friction resistance between the shields.
Further, the canopy body may be connected to the seat back. However, in this case, since it is necessary to secure an installation space for the component parts of the driving device such as the base plate with respect to the seat back, the installation may be difficult.

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

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle seat 2 Seat back 3 Seat cushion 4 Headrest 5 Canopy device 10 Canopy body 11 First shield (covering part)
11A Fastening screw 12 Second shield (cover)
12A Fastening screw 13 Third shield (base)
13A Fastening screw 14 Connection mechanism 14A-14F Rotating plate A1 Connection shaft B1, B2 Projection C1 Claw part D1, D2 Projection E1 Claw part F1, F2 Projection 14G Stopper 20 Drive device 21 Base plate 21A Standing plate part 22 Electric motor 23A, 23B Pulley 24 V belt 25 Bush 26 Guide B Car body structure (fixed body)
L Luggage board C Ceiling

Claims (4)

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 body is
A base portion that is axially connected to a fixed body such as the vehicle seat or the vehicle body so as to be rotatable;
A cover portion that is axially connected to the base portion and covers the occupant's head, and a cover portion that is rotatable between the base portion and a storage position that superimposes the outer shell shape of the base portion,
The base portion is in a retracted position in which the base portion is retracted to the rear side of the vehicle seat when the canopy main body is not used due to the connection structure with the fixed body. When in use, it is designed to be in a use position that is moved closer to the occupant's head from the retracted position,
A connecting shaft that connects the cover portion to the base portion so as to be rotationally movable and a connecting shaft that connects the base portion to the fixed body so as to be rotationally movable are configured by a common connecting shaft,
The operation of rotating the cover part with respect to the base part or rotating the base part with respect to the fixed body is performed by rotating the connection shaft in one direction or the other direction. The connecting mechanism that extends in the axial direction provided between the shaft connecting portions of the cover portion and the base portion is operated in conjunction with each other by sequentially bringing them into contact with each other in a state where power can be transmitted in the rotational direction. We have been,
A vehicle seat canopy device, wherein a drive device for rotating the connecting shaft in one direction or the other direction is fixed to a vehicle body structure at a position hidden under a luggage board . The vehicle seat canopy device according to claim 1,
The canopy body is formed by a dome-shaped shield that can cover the head of an occupant from above, and the base is formed by a curved shell-shaped shield that forms a part of the dome shape. The cover portion forms a dome shape continuous from the base portion when the cover portion is in the unfolded position, and curves to superimpose the outer shell shape at the inner surface side or the outer surface side of the base portion when the cover portion is in the retracted position state. A canopy device for a vehicle seat, which is formed by a shield having an outer shell shape. The vehicle seat canopy device according to claim 1 or 2,
The cover part is configured to be in a deployed position by moving to the front side of the vehicle seat with respect to the base part,
A canopy device for a vehicle seat, wherein the base portion is configured to move from a use position to a retracted position in response to a movement of the cover portion moving backward toward the storage position. The vehicle seat canopy device according to any one of claims 1 to 3,
A canopy device for a vehicle seat, wherein the canopy body is pivotally connected to a vehicle body so as to be rotatable.

Images