JP2010241358A - Back board of vehicle seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a back board of a seat for a vehicle mounted with a cover lid for opening/closing an opening formed into a substantially reverse L-shape in longitudinal cross section from an upper surface to the front to easily put a stored object in/out of the opening, even when the stored object is put in/out of the opening by opening the cover lid. <P>SOLUTION: The cover lid 22b is assembled to a seat back 3 side via a first link 80 formed into a substantial L-shape and a second link 90 formed into a substantial U-shape. In the first link 80, the substantially L-shaped bent portion 80c is pivotally attached to the seat back 3 side, and the substantially L-shaped one end 80a is pivotally attached to an upper end side of the cover lid 22b. In the second link 90, the substantially U-shaped one end 90a is pivotally attached to the seat back 3 side, and the substantially U-shaped other end 90b is pivotally attached to a lower end side of the cover lid 22b. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vehicular seat backboard, and more particularly to a vehicular seat backboard to which a cover lid that opens and closes an opening formed in a substantially inverted L-shaped longitudinal section from the upper surface to the front surface.

  Conventionally, for example, as shown in FIG. 12, it is stored inside a seat back 103 of a front seat (for example, a driver seat or a passenger seat) for a rear seat occupant (hereinafter simply referred to as “occupant”). A vehicle seat 101 having a space is already known. This storage space is in communication with the outside of the seat back 103 through an opening 122a formed in a substantially inverted L-shaped longitudinal section from the upper surface to the front surface of the backboard 120. A cover lid 122b that opens and closes the opening 122a is attached to the backboard 120. The cover lid 122b is closed when the storage space is not used, and the cover lid 122b is opened when the storage space is used. Can be secured. In this way, the appearance of the seat back 103 can be improved even if a storage space is provided.

  As prior art document information related to the invention of this application, for example, Patent Document 1 is known.

JP 2005-77716 A

  However, in the prior art described above, the cover lid 122b is assembled in such a manner that the lower end thereof is pivotally attached to the backboard 120. When assembled in this way, the opening operation of the cover lid 122b is limited to the movement of the cover lid 122b substantially rearward. Therefore, even if the cover lid is opened (in FIG. 12, the cover lid 122b becomes a virtual line). Of the opening 122a formed in a substantially inverted L-shaped longitudinal section of the backboard 120, the upper surface side (plane direction opening) can be secured, but the front side (height direction opening). Could not be secured. Therefore, there has been a problem that it is difficult to take in and out the articles stored in the storage space.

  The present invention is intended to solve such problems, and an object of the present invention is to attach a cover lid that opens and closes an opening formed in a substantially inverted L-shaped longitudinal section from the top surface to the front surface. It is an object of the present invention to provide a backboard for a vehicle seat that is easy to put in and out even when the lid is opened and a stored item is taken in and out from the opening.

The present invention is for achieving the above object, and is configured as follows.
The invention according to claim 1 is a backboard for a vehicle seat to which a cover lid that opens and closes an opening formed in a substantially inverted L-shaped longitudinal section from the upper surface to the front surface. It is assembled on the seat back side via a first link formed in a substantially L-shape and a second link formed in a substantially U-shape. The bent portion is pivotally attached to the seat back side, and one end of its substantially L shape is pivotally attached to the upper end side of the cover lid, and the second link has one end of its substantially U shape facing the seat back side. The other end of the substantially U-shape is pivotally attached to the lower end side of the cover lid.
According to this configuration, the opening operation of the cover lid moves not only substantially behind the cover lid but also substantially downward. Therefore, when the cover lid is opened, not only the upper surface side (the opening in the plane direction) but also the front side (the opening in the height direction) among the openings formed in the substantially inverted L-shaped longitudinal section of the backboard is secured. As a result, it becomes easy to put in and out the articles (for example, display devices, magazines, etc.) stored in the storage space.

The invention according to claim 2 is the backboard for the vehicle seat according to claim 1, wherein a display that can be advanced and retracted by sliding from the opening is accommodated in the backboard. At the other end of the substantially L-shaped, a first projection is formed that contacts the guide formed on the side of the display when the first link is inverted as the cover lid opens. The second link is pivotally attached in a state in which the cover lid is urged in the opening operation direction. When the display housed in the second link is slid toward the opening, A second projection that contacts the guide formed on the side surface of the display is formed. When the display housed in the display is slid toward the opening, the guide of the display contacts the second projection. The cover lid opens by rotating the second link accompanying this contact against the urging force acting on itself, and the first link also reverses by this opening operation, With this reversal, the first projection of the first link comes into contact with the guide of the display, so that the second link is prevented from rotating by the urging force acting on itself, and the cover lid is closed. It is also characterized in that the return to is prevented.
According to this configuration, when a display slidable from the opening is stored in the backboard, the cover lid can be opened and closed by the slide. Therefore, the cover lid can be automated.

FIG. 1 is an exploded perspective view of a back side of a seat back of a vehicle seat for a back board according to an embodiment of the present invention. FIG. 2 is a perspective view showing the assembled state of FIG. FIG. 3 is an overall perspective view of the display device of FIG. 1 viewed from the back side. FIG. 4 is an overall perspective view of the display housed in the seat back. FIG. 5 is a longitudinal sectional view of the seat back in the state of FIG. FIG. 6 is an overall perspective view of the state in which the display lid of FIG. 4 is slid to open the cover lid. FIG. 7 is a longitudinal sectional view of the seat back in the state of FIG. FIG. 8 is a perspective view showing a state in which the display shown in FIG. 6 is slid outside the seat back. FIG. 9 is a longitudinal sectional view of the seat back in the state of FIG. FIG. 10 is a perspective view of a state in which the display of FIG. 8 is tilted. FIG. 11 is a longitudinal sectional view of the seat back in the state of FIG. FIG. 12 is a cross-sectional view of a seat back according to the prior art.

  Hereinafter, the form for implementing this invention is demonstrated using FIGS. In the following description, the terms “up”, “down”, “front”, “back”, “left”, and “right” refer to the directions of “up”, “down”, “front”, “rear”, “left”, and “right” described in the above-described drawings. The direction of up, down, front, back, left and right is shown.

  First, with reference to FIGS. 1-3, the structure of the display apparatus 30 of the vehicle seat 1 which concerns on the Example of this invention is demonstrated. The display device 30 includes a slide mechanism 32 and a display 34 that can be slid by the slide mechanism 32. The display 34 is assembled to the back frame 10 of the seat back 3 via the slide mechanism 32 with the monitor 34 a facing the back side of the seat back 3. And the back board 20 which comprises the design surface of the vehicle seat 1 is assembled | attached to the back surface of the back frame 10. As shown in FIG. As a result, the display device 30 can be stored in the seat back 3 with good appearance.

  The backboard 20 includes, for example, an upper backboard 22 and a lower backboard 24 that are divided into upper and lower parts. The upper backboard 22 has a first opening 22a (“opening” recited in the claims) formed in a substantially inverted L-shaped longitudinal section from the upper surface to the front. Thereby, the display 34 of the display device 30 can be advanced and retracted by sliding. The upper backboard 22 is attached with a cover lid 22b for opening and closing the first opening 22a.

  The cover lid 22b is assembled to the seat back 3 side via a link mechanism. Here, the link mechanism will be described in detail. The link mechanism includes a pair of left and right first links 80 and 80 formed in a substantially L shape, and a pair of left and right second links 90 formed in a substantially U shape. 90. The first links 80 are pivotally attached to the bezel bracket 16 having a substantially L-shaped bent portion 80c fixed to the back frame 10 via pins 82, respectively.

  Further, the first links 80 are pivotally attached to the upper end of the cover lid 22b via pins 84 at their substantially L-shaped one ends 80a. Further, when the first link 80 is inverted in accordance with the opening operation of the cover lid 22b as described later, the other end 80b of the substantially L-shape of both the first links 80 is a side surface of the display 34. Round shaft-shaped first protrusions 86 are formed in contact with the guides 36 formed on each.

  On the other hand, both of the second links 90 are pivotally attached to the bezel bracket 16 having a substantially U-shaped one end 90 a fixed to the back frame 10 via pins 92. At this time, both the second links 90 are pivotally attached in a state where they are urged via the torsion spring 98 in the direction in which the cover lid 22b opens.

  The second links 90 are pivotally attached at their lower ends 90b to the lower ends of the cover lid 22b via pins 94, respectively. Further, as will be described later, when the display 34 accommodated in both the second links 90 is slid toward the first opening 22a, the guides 36 formed on the side surfaces of the display 34 are connected. A second protrusion 96 having a round shaft shape is formed. The link mechanism is configured in this way. The upper backboard 22 is also formed with a second opening 22c through which the assist grip 26 assembled to the back frame 10 via screws is passed. The second opening 22c is in communication with the first opening 22a described above.

  Next, detailed configurations of the above-described slide mechanism 32 and display 34 will be described individually. First, the detailed configuration of the slide mechanism 32 will be described. The slide mechanism 32 mainly includes a pair of left and right guide rails 40, 40, sliders 42, 42 that freely slide between the pair of left and right guide rails 40, 40, and the sliders 42 are bridged to both sliders 42. The rectangular slide base 44 is fixed.

  The pair of left and right guide rails 40, 40 are fixed to the upper portion of the back frame 10 along the vertical direction via mounting brackets 40a, 40a and screws. Thereby, the slide base 44 can be slid up and down between the inside of the seat back 3 and the back side of the headrest 4 which is the outside. At the center in the width direction on the upper surface of the slide base 44, a hinge bracket 46 formed in a substantially U shape corresponding to a hinge bracket 70 formed in the display 34 described later is fixed.

  In addition, brackets 48 are fixed to the left and right ends of the upper surface of the slide base 44 so that pins 74a of a torque hinge 74, which will be described later, are fixed. A pair of left and right ball nuts 62 and 62 are fixed to the left and right ends of the back surface of the slide base 44.

  Next, a drive source for the slide mechanism 32 will be described. In the back frame 10, the motor mount 12 is assembled on the substantially back side of the slide base 44. The motor 52 is assembled to the motor mount 12 so that the rotating shaft 52a faces downward. Two transmission pulleys 54, 54 are fixed to the rotating shaft 52 a of the motor 52.

  On the other hand, a pair of left and right ball screws 60, 60 arranged in parallel with the pair of left and right guide rails 40, 40 are assembled to the upper portion of the back frame 10. The pair of left and right ball screws 60, 60 are assembled together via bearings or the like (not shown) so that the ball screws 60, 60 can rotate about their axes. Further, a pair of left and right ball nuts 62 and 62 fixed to the slide base 44 are screwed into the pair of left and right ball screws 60 and 60, respectively.

  Further, receiving pulleys 56 and 56 are fixed to the pair of left and right ball screws 60 and 60, respectively. Belts 58 and 58 are hooked between the receiving pulleys 56 and 56 and the transmission pulleys 54 and 54, respectively. When the rotating shaft 52a of the motor 52 rotates, the rotational force rotates the pair of left and right ball screws 60, 60 via both transmission pulleys 54, 54, both belts 58, 58, and both receiving pulleys 56, 56. I will move it. As a result, the pair of left and right ball nuts 62, 62 slide. Therefore, the slide base 44 fixed to the pair of left and right ball nuts 62, 62 can be slid along the pair of left and right guide rails 40, 40.

  The motor 52 is electrically connected to a control device (not shown), and is driven due to various operations (for example, occupant switch operations). Further, the rotating shaft 52a of the motor 52 can be rotated in either the forward or reverse direction. Therefore, the slide base 44 can be slid either upward or downward. In addition, when the slide base 44 reaches the upper and lower ends of the pair of left and right guide rails 40, 40, it can be detected by a limit switch or the like (not shown). And electric control which stops the drive of the motor 52 by this detection signal is performed. The slide mechanism 32 is configured in this way.

  Next, the detailed configuration of the display 34 will be described. As described above, the hinge brackets 70 corresponding to the hinge brackets 46 of the slide base 44 are fixed to the left and right of the lower surface of the display 34, respectively. A hinge pin (not shown) is attached to each of the hinge brackets 46 and 70. At this time, hinge pins are attached to the hinge brackets 46 and 70 via the torsion springs 76 and 76, respectively, so that the display 34 is biased forward. Thereby, the display 34 can be tilted with respect to the slide base 44 in a biased state in the forward tilt direction.

  In addition, hooking claws 72 that protrude toward the back side are formed on the left and right ends of the lower surface of the display 34, respectively. The hooking claw 72 is formed in a substantially hook shape, and when the slide base 44 is slid from the inside of the seat back 3 to the outside and the display 34 is slid to the outside of the seat back 3, the back frame 10. It is formed so that it may interfere with the to-be-hooked member 14 fixed to the upper part of the.

  A torque hinge 74 is fixed to the hooking claw 72. The torque hinge 74 is a pin that rotates with the pin 74a having a large resistance with respect to the main body. As described above, the torque hinge 74 is fixed to the hooking claw 72 with the pin 74 a inserted into the bracket 48 of the slide base 44. At this time, the torque hinge 74 is fixed to the hooking claw 72 so as to be disposed on the same axis as the hinge pins of the hinge brackets 46 and 70. As a result, it is possible to prevent the hinge operation from being fluttered by the hinge brackets 46 and 70.

  Further, substantially trapezoidal guides 36 are formed on the left and right side surfaces of the display 34, respectively. The guide 36 includes a first inclined surface 36a that is inclined downward from above to the rear, a flat surface 36b that is parallel to the sliding direction of the display 34 from the lower end portion of the first inclined surface 36a, and the flat surface 36b. A second inclined surface 36c that is inclined downward from the lower end of 36b toward the front. When the display 34 is stored in the seat back 3, the second protrusions 96 of the second links 90 are on the base end side (the trapezoidal base side) of the first inclined surface 36a. Are set to be arranged respectively.

  The monitor 34a of the display 34 is also electrically connected to a control device (not shown), and various images (for example, occupant switch operation, driving of the motor 52, etc.) For example, a television image, a recorded image, etc.) can be projected. The display 34 is configured in this way.

  Finally, the operation of the backboard 20 described above will be described with reference to FIGS. In this description, an example in which the opening / closing operation of the cover lid 22b of the backboard 20 is performed by the sliding operation of the display 34 will be described. First, the case where the display 34 is switched from the storage state in which the display 34 is stored inside the seat back 3 to the usable state in which the display 34 is slid outside the seat back 3 will be described. In this storage state, the display 34 is substantially parallel to the slide base 44.

  First, from the state shown in FIGS. 4 and 5, the occupant operates a switch (not shown) for raising the display 34. Then, as already described, the slide base 44 is raised by driving the motor 52. Thereby, the display 34 assembled | attached via the slide base 44 and both hinge brackets 46 and 70 also raises. At this time, the display 34 rises while the first inclined surface 36 a of the guide 36 presses the second protrusion 96 of the second link 90.

  As a result, the second link 90 rotates in the direction in which the cover lid 22b opens against the urging force of the torsion spring 98 acting on the second link 90. By this rotation, the cover lid 22b is also opened, and the first link 80 is also reversed. When the second protrusion 96 of the second link 90 reaches the flat surface 36b of the guide 36, the cover lid 22b is completely opened and the first link 80 is also completely reversed. When the second protrusion 96 reaches the flat surface 36b in this manner, the rotation of the second link 90 in the return direction is restricted, so that the open state of the cover lid 22b and the inverted state of the first link 80 are maintained. (See FIGS. 6 and 7).

  When the slide base 44 is lifted from this state, the first protrusion 86 of the first link 80 held in the inverted state also starts to contact the flat surface 36 b of the guide 36. Therefore, even if the contact between the second protrusion 96 of the second link 90 and the flat surface 36b of the guide 36 is canceled as the slide base 44 is further raised, the state before the contact is canceled Similarly, the open state of the cover lid 22b and the inverted state of the first link 80 are maintained.

  From this state, when the slide base 44 is further raised and eventually the display 34 is slid outside the seat back 3, the hooking claw 72 of the display 34 interferes with the hooked member 14 of the back frame 10. Start (see FIGS. 8 and 9). At this time, the first protrusion 86 of the first link 80 reaches the second inclined surface 36 c of the guide 36.

  When the slide base 44 is further raised in this interference state, the hooking claw 72 rotates with respect to the slide base 44 so that the tip 72a faces downward. Accordingly, the display 34 integrated with the hooking claw 72 is also tilted (rotated in the backward tilt direction) toward the headrest 4 via the hinge brackets 46 and 70.

  That is, even if the hooking claw 72 and the hooked member 14 begin to interfere with each other, the slide base 44 is still in a state where it can be raised. However, the display 34 rises in a state where the hooking claw 72 is hooked on the hooked member 14, and as a result, the display 34 tilts toward the headrest 4 side. As a result, the first protrusion 86 of the first link 80 is pressed against the second inclined surface 36c of the guide 36, so that the open state of the cover lid 22b and the inverted state of the first link 80 are maintained. The At this time, the display 34 tilts against the biasing force of the torsion spring 76 and tilts against the rotational resistance acting on the torque hinge 74.

  Eventually, when the slide base 44 reaches the upper ends of the pair of left and right guide rails 40, 40, the drive of the motor 52 stops, and the display 34 is also held together with the slide base 44 in that state (see FIGS. 10 and 11). . At this time, since the first projection 86 of the first link 80 is pressed from the proximal end side (the trapezoidal base side) of the second inclined surface 36c of the guide 36, the cover lid continues in this state. The open state of 22b and the inverted state of the first link 80 are maintained. In this state, the occupant may cancel the switch operation. In this way, the display 34 can be switched to a usable state by sliding it outside the seat back 3.

  Next, contrary to the above description, a case will be described in which the display 34 is returned from the usable state in which the display 34 is slid to the outside of the seat back 3 to the storage state in which the display 34 is stored in the seat back 3. In this case, the operation opposite to that described above is performed.

  First, from the state shown in FIGS. 10 and 11, the occupant operates a switch (not shown) for lowering the display. Then, as already described, the slide base 44 is lowered by the drive of the motor 52. As a result, the display 34 assembled via the slide base 44 and the hinge brackets 46 and 70 is also lowered.

  By this lowering, the interference between the hooking claw 72 and the member 14 to be hooked is eliminated, so that the display 34 is directed toward the side opposite to the headrest 4 side via the hinge brackets 46 and 70 by the urging force of the torsion spring 76. Tilt (rotate forward). At this time, the display 34 tilts while the second inclined surface 36 c of the guide 36 presses the first protrusion 86 of the first link 80.

  Eventually, when the display 34 starts to be housed inside the seat back 3, the interference between the hooking claw 72 of the display 34 and the hooked member 14 of the back frame 10 is eliminated, and the display 34 is attached to the slide base 44. It is returned to the substantially parallel state (see FIGS. 8 and 9). At this time, since the first protrusion 86 of the first link 80 starts to contact the flat surface 36b of the guide 36, the open state of the cover lid 22b and the inverted state of the first link 80 are maintained even in this state. The

  When the slide base 44 is lowered from this state, the second protrusion 96 of the second link 90 held in the rotating state is already in contact with the flat surface 36b of the guide 36. As the base 44 further descends, even if the contact between the first protrusion 86 of the first link 80 and the flat surface 36b of the guide 36 is canceled, as in the state before the contact is canceled, The rotation state of the second link 90 is maintained.

  From this state, when the slide base 44 further descends and the second projection 96 of the second link 90 reaches the first inclined surface 36a of the guide 36, the second link 90 acts on itself. It is rotated in the return direction by the urging force. As a result, the cover lid 22b also rotates in the closing direction, and the first link 80 also rotates in the returning direction.

  Eventually, when the slide base 44 reaches the lower end portions of the pair of left and right guide rails 40, 40, the drive of the motor 52 stops, and the display 34 is also held together with the slide base 44 in that state (see FIGS. 4 and 5). . At this time, the second protrusion 96 of the second link 90 is returned to the proximal end side of the first inclined surface 36a of the guide 36, that is, the second link 90 is rotated in the return direction. Therefore, the cover lid 22b is also returned to the open state, and the first link 80 is also returned to the state before being reversed.

  In this state, the occupant may cancel the switch operation. In this manner, the display 34 can be returned to the storage state in which the display 34 is stored inside the seat back 3. In the above description of the operation, the pair of left and right links 80 and 90 and the pair of left and right guides 36 in the display 34 operate simultaneously on the left and right.

  The backboard 20 of the vehicle seat 1 according to the embodiment of the present invention is configured as described above. According to this configuration, the cover lid 22 b that opens and closes the first opening 22 a of the backboard 20 is assembled to the bezel bracket 16 of the back frame 10 via the first link 80 and the second link 90. . Therefore, the opening operation of the cover lid 22b moves not only substantially rearward of the cover lid 22b but also substantially downward. Therefore, when the cover lid 22b is opened, not only the upper surface side (opening in the planar direction) but also the front side (height direction) of the first opening 22a formed in a substantially inverted L-shaped longitudinal section of the backboard 20. Can be ensured, and as a result, it becomes easy to put in and take out articles to be stored (for example, the display device 30 and magazines) stored in the storage space.

  Further, according to this configuration, when the display 34 slidable from the first opening 22a is stored in the backboard 20, the cover lid 22b can be opened and closed by the sliding. Therefore, it is possible to automate the cover lid 22b.

The contents described above are only related to one embodiment of the present invention, and do not mean that the present invention is limited to the above contents.
In the embodiment, an example in which the object to be stored in the backboard 20 is the display device 30 has been described. However, the present invention is not limited to this. For example, a magazine or the like may be used. In that case, the occupant takes in and out the magazine.

  In the embodiment, as an example of a drive mechanism that is a drive source of the slide mechanism 32, the rotation of the rotation shaft 52 a of the motor 52 causes the transmission pulley 54, the belt 58, the receiving pulley 56, the ball screw 60, and the ball nut 62 to pass through. Thus, the configuration for sliding the slide base 44 has been described. However, the present invention is not limited to this, and the slide base 44 may be slid through various drive mechanisms (for example, a motor cylinder) and various power transmission mechanisms (reduction gears).

  Further, in the embodiment, an example in which the occupant releases the switch operation after the slide base 44 reaches the upper ends of the pair of left and right guide rails 40 and 40 has been described. However, the present invention is not limited to this. For example, the occupant may cancel the switch operation before the slide base 44 reaches the upper ends of the pair of left and right guide rails 40, 40. In this case, the amount of tilt of the display 34 is reduced. For example, when the occupant is a child, the display 34 can be easily viewed.

  In the embodiment, as an example of the storage state of the display 34, an example in which the display 34 is stored in the seat back 3 has been described. However, the present invention is not limited to this, and any box that is disposed in the vehicle may be used as long as the display 34 can be stored.

DESCRIPTION OF SYMBOLS 1 Vehicle seat 3 Seat back 22 Upper back board 22a Opening 22b Cover lid 80 First link 80a One end 80c Bending part 90 Second link 90a One end 90b The other end

Claims (2)

A vehicular seat backboard to which a cover lid for opening and closing an opening formed in a substantially inverted L-shaped longitudinal section from the upper surface to the front surface is attached,
The cover lid is assembled to the seat back side via a first link formed in a substantially L shape and a second link formed in a substantially U shape,
The first link has a substantially L-shaped bent portion pivoted to the seat back side, and one end of the substantially L-shaped pivoted to the upper end side of the cover lid.
The second link has a substantially U-shaped one end pivotally attached to the seat back side, and the other substantially U-shaped other end is pivotally attached to the lower end side of the cover lid. Seat backboard. The vehicle seat backboard according to claim 1,
Inside it, a display that can be advanced and retracted by sliding from the opening is stored,
At the other end of the substantially L-shape of the first link, there is a first protrusion that comes into contact with the guide formed on the side surface of the display when the first link is inverted as the cover lid opens. Formed,
The second link is pivotally attached in a state of being biased in the direction in which the cover lid opens.
The second link is formed with a second protrusion that comes into contact with the guide formed on the side surface of the display when the stored display is slid toward the opening.
When the stored display is slid toward the opening, the guide of the display comes into contact with the second protrusion, and the second link accompanying this contact rotates against the urging force acting on itself. The cover lid opens by moving, and the first link also reverses by this opening operation, and the first protrusion of the first link contacts the guide of the display along with this reverse. The vehicle seat backboard is characterized in that the second link is prevented from rotating by the urging force acting on the second link and the cover lid is also prevented from returning to the closing operation.

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