JP2009095594A - Canopy device for vehicle seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a failure due to interference in a canopy body and an obstacle when there is the obstacle on a moving route of the canopy body. <P>SOLUTION: The canopy body 10 is connected to a vehicle body structure B through a moving mechanism 11 capable of moving it between an unfolded position at which it is put on the head of a crew and a stored position at which it is retreated to the side behind a vehicle seat 1. The canopy body 10 is provided with a sensor 31 capable of detecting the state of being in contact with the obstacle in the moving direction or approaching a prescribed position just before the contact in the middle of the unfolding movement. The movement of canopy body 10 in the direction is stopped when the contact state with the obstacle or the approaching state is detected by the sensor 31. <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 related art disclosed above, it is not preferable to attach a functional component such as a touch sensor to the canopy body because the plate thickness of the entire canopy body becomes bulky.

  The present invention was devised as a solution to the above-mentioned problems, and the problem to be solved by the present invention is to assemble the functional component in a state where the protrusion in the thickness direction is suppressed with respect to the canopy body. Is to be able to.

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. Functional components of the canopy body are arranged along the end surface portion on the outer peripheral edge side of the canopy body.
Here, examples of the functional component of the canopy body include various sensors, LED lighting, and a tube that blows out a relaxing scent or high-concentration oxygen (rich oxygen).
According to the first aspect of the invention, the functional component of the canopy body is disposed along the end surface portion on the outer peripheral edge side of the canopy body, so that the functional component overlaps with the plate thickness of the canopy body. Thereby, a functional component can be assembled | attached to a canopy main body in the state which suppressed the protrusion amount to the plate | board thickness direction from a canopy main body. Moreover, the appearance of the entire outer shell shape of the canopy body can be made difficult to be impaired by arranging the functional component at the end position on the outer peripheral edge side of the canopy body.

Next, according to a second aspect of the present invention, in the first aspect described above, a protective cover that can hold the functional component inside is provided on the outer peripheral edge where the functional component of the canopy body is disposed. It is attached.
According to the second aspect of the invention, the functional component can be held by the protective cover in a state of being arranged along the end surface portion on the outer peripheral edge side of the canopy body. Moreover, the appearance of the canopy body can be made difficult to be impaired by covering the functional parts with the protective cover.

Next, according to a third invention, in the first or second invention described above, the canopy main body moves between a deployed position where the canopy body covers the occupant's head and a storage position deviated from the deployed position. It is connected to a fixed body such as a vehicle seat or a vehicle body via a movable mechanism. The functional component of the canopy main body is a sensor that can detect a state in which the canopy main body is in contact with an obstacle in the moving direction during the storing and unfolding movement or close to a predetermined position just before the contact. The arrangement of the sensor is set along the end surface portion of the edge portion which is the front end side of the canopy main body storing and unfolding movement.
According to the third aspect of the invention, the sensor is set on the edge on the front end side of the storage deployment movement of the canopy body, so that the sensor is overlapped with the plate thickness of the canopy body and the detection accuracy is improved. State.

  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 seated on the vehicle seat 1. Here, the vehicle body structure B corresponds to the fixed body of the present invention. 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.

  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. 5, when the canopy body 10 rotates clockwise around the connection axis A <b> 1, 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. 5, 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.

  The moving mechanism 11 described above is arranged and formed in the same way in the connecting portion on the left side in FIG. 1, but the connecting shaft A1 (see FIG. 5) 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. 5, 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. 5, 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.

  Here, referring back to FIG. 1, the electrode line of a known capacitance sensor is provided over the entire periphery of the front edge of the canopy body 10, that is, the edge on the leading end side of the deployment movement of the canopy body 10. A sensor 31 is provided. As shown in FIG. 4, the sensor 31 is routed along the lower surface portion (end surface portion) on the front edge side of the canopy main body 10. Thereby, since the sensor 31 is arrange | positioned without projecting in the plate | board thickness direction of the canopy main body 10, the plate | board thickness as the whole of the canopy main body 10 is restrained thinly. As shown in FIG. 1, the sensor 31 is electrically connected to the control device 30 fixedly installed in the vehicle body structure B together with the drive device 20 at a position where the end of the wiring is hidden under the luggage board L described above. Has been.

  The control device 30 is connected to the electric motor 22 of the drive device 20 so that the drive can be controlled by an electric signal. Specifically, the control device 30 is in a state in which the tip of the rotational movement of the canopy body 10 is brought into contact with a certain obstacle such as a human body or close to a predetermined position while the canopy body 10 is in the middle of the unfolding movement of the canopy body 10. Is detected, a detection signal to that effect is received. And the control apparatus 30 stops the drive of the electric motor 22 based on the detection signal, and stops the expansion | deployment movement of the canopy main body 10. FIG.

  Thereby, when there is an obstacle on the movement path of the canopy main body 10, it is possible to prevent the canopy main body 10 and the obstacle from causing trouble due to interference. The control device 30 performs movement control for returning the canopy body 10 to the storing direction when the sensor 31 detects a contact state or an approach state between the front edge of the canopy body 10 and the obstacle. May be.

  A rubber protective cover 40 that covers the sensor 31 from the outside is attached to the front edge of the canopy body 10 where the sensor 31 is disposed. As shown in FIG. 1, the protective cover 40 is provided so as to cover the entire front edge of the canopy body 10. Thereby, when the front edge part of the canopy main body 10 contacts with an obstruction, the protective cover 40 is bent and deformed by its elasticity, and the contact pressure is relieved. Therefore, it is possible to make it more difficult for the canopy main body 10 and the obstacle to be caused by interference.

  Thus, according to the canopy device for a vehicle seat of the present embodiment, the deployment movement of the canopy body 10 is detected by the sensor 31 in the middle of the movement in a state where the sensor 31 is in contact with an obstacle or reaches a predetermined position just before the contact. The movement in that direction stops. Therefore, when there is an obstacle on the movement path of the canopy body 10, it is possible to prevent the canopy body 10 and the obstacle from being subjected to an abnormal load due to interference, so that no trouble due to interference occurs between the two. be able to.

  Further, by arranging the sensor 31 along the end surface portion on the outer peripheral edge side of the canopy main body 10, the sensor 31 can be arranged so as to overlap the plate thickness of the canopy main body 10. Thereby, the sensor 31 can be assembled to the canopy body 10 in a state where the amount of protrusion from the canopy body 10 in the plate thickness direction is suppressed. Furthermore, by arranging the sensor 31 at the front edge portion which is the front end side of the storage deployment movement of the canopy main body 10, the appearance of the entire outer shell shape of the canopy main body 10 is hardly impaired and the detection accuracy by the sensor 31 is improved. Can be made. In addition, since the sensor 31 is configured to be covered from the outside by the rubber (soft) protective cover 40, the sensor 31 is not directly in contact with the obstacle and is not easily damaged. For example, the sensor 31 is in contact with the human body. The touch feeling at the time can be improved. Further, since the sensor 31 is obscured, the appearance of the entire outer shell shape of the canopy body 10 is not easily impaired.

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 sensor which detects the contact state or approach state of a canopy main body and an obstruction may be provided in the rear edge part of the canopy main body, ie, the edge part used as the front end side of accommodation movement.

  Moreover, it may replace with an electrostatic capacitance type sensor and may use the pressure sensor which detects a contact state with the contact pressure at the time of a contact. However, in this case, it is preferable to use a soft cover as shown in the above embodiment as a protective cover for covering the pressure sensor from the outside. Specifically, as the protective cover for protecting the pressure sensor, it is preferable to use a cover having flexibility so that the pressure received upon contact with the obstacle can be transmitted to the pressure sensor by bending deformation. By doing so, even if a pressure sensor is used as a means for detecting contact with an obstacle, detection can be suitably performed.

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.
Moreover, you may provide functional parts, such as a tube which blows out LED illumination, a fragrance with a relaxing effect, and high concentration oxygen (rich oxygen) inside the protective cover which protects a sensor. Also in the arrangement of the functional parts, the functional parts project in the thickness direction of the canopy body 10 by being arranged along the lower surface portion on the front edge side of the canopy body 10 like the sensor 31 shown in the above embodiment. Arranged without. Therefore, even if the functional parts are routed, the overall thickness of the canopy body 10 can be reduced.
Moreover, you may make the inside of a protective cover fill with the buffer material which buffers contact with an obstruction. However, in this case, it is preferable to use a capacitance type sensor that can detect in a non-contact state, not a pressure sensor that detects a contact state with an obstacle by contact pressure.
Further, the canopy body may be connected to a vehicle seat component such as a seat back via a moving 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. FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3 showing a sensor arrangement state. 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 3 Seat cushion 4 Headrest 5 Canopy device 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 30 Control device 31 Sensor 40 Protective cover B Body structure (fixed body)
L Luggage board C Ceiling

Claims (3)

A vehicle seat canopy device comprising a canopy body used by being covered by a head of an occupant seated on a vehicle seat,
A canopy device for a vehicle seat, wherein functional components of the canopy body are arranged along an end surface portion on an outer peripheral edge side of the canopy body. The vehicle seat canopy device according to claim 1,
A canopy device for a vehicle seat, wherein a protective cover capable of holding the functional component in a state of being accommodated therein is attached to an outer peripheral edge portion where the functional component of the canopy main body is disposed. . The vehicle seat canopy device according to claim 1 or 2,
The canopy body is connected to the vehicle seat or a fixed body such as a vehicle body via a moving mechanism that allows the canopy body to move between a deployment position that covers the head of the occupant and a storage position that is out of the deployment position. Has been
The functional component of the canopy main body is a sensor capable of detecting a state in which the canopy main body is in contact with an obstacle in the moving direction of the storage deployment movement or close to a predetermined position just before the contact,
The vehicle seat canopy device is characterized in that the arrangement of the sensor is set along an end surface portion of an edge portion which is a front end side of the storage deployment movement of the canopy body.

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