JP2011037407A - Vehicular seat with belt buckle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular seat whose belt buckle hardly becomes an obstacle for a user. <P>SOLUTION: In the vehicular seat 1 with the belt buckle including a seat back 3 rotated between a use position erected relative to the floor 10 of a vehicle and a storage position falling forward from the use position and the belt buckle 8a of a seat belt restricting the user to the seat 1, the belt buckle 8a is positioned outside in the seat width direction of a body 3g of a frame of the seat back 3. The frame of the seat back 3 includes an extension 3a2 extending outward in the seat width direction from the body 3g and an attaching part 3a1 extending from the extension 3a2 and attached rotatably on the floor 10 side on the outside of the belt buckle 8a in the seat width side. By rotation of the seat back 3 to the storage position, the body 3g of the frame moves to an adjacent position adjacent to the belt buckle 8a in the seat width direction from the rear above the position of the belt buckle 8a. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vehicle seat mounted on a vehicle such as a vehicle. In particular, with a belt buckle having a seat back that is rotated to a use position that stands up with respect to the floor of the vehicle and a storage position that falls forward from the use position, and a belt buckle of the seat belt for restraining the user to the seat It relates to a vehicle seat.

  The vehicle seat includes, for example, a seat cushion and a seat back that is rotatably attached to a rear portion of the seat cushion (see Patent Document 1). A belt buckle of a seat belt is attached to the rear portion of the seat cushion. The belt buckle is located closer to the center of the seat width than the frame of the seat back, and it is avoided that the belt buckle is caught between the frame of the seat back and the seat cushion when the seat back is tilted on the seat cushion. ing. For this reason, the seat back is easy to fall on the seat cushion.

JP 2001-206118 A

  However, the belt buckle is located closer to the seat width center side than the frame of the seat back, and thus is closer to the seat width center side. Therefore, when the user is seated on the seat cushion, the belt buckle is located under the user's buttocks and gets in the way. Therefore, an object of the present invention is to provide a vehicle seat in which a belt buckle is unlikely to disturb a user.

  In order to solve the above-mentioned problems, the present invention is a vehicle seat with a belt buckle having a configuration as described in each claim. According to the first aspect of the present invention, the belt buckle is located on the outer side of the seat width with respect to the main body of the frame of the seat back. The seat back frame extends from the main body to the outside of the seat width and rotates from the extension to the floor side or seat cushion side at the same position as the seat width outside or seat width from the belt buckle. It has a mounting part that can be mounted. As the seat back rotates to the retracted position, the main body of the frame moves from an upper rear position of the belt buckle to an adjacent position adjacent in the seat width direction.

  Therefore, the belt buckle is located outside the seat width with respect to the main body of the frame. Therefore, the belt buckle is easily located on the outer side of the seat width than the user's buttocks seated on the seat, and does not easily disturb the user. The main body of the frame is adjacent to the belt buckle in the seat width direction at the retracted position. Therefore, it is easy to move the seat back to the lower position toward the floor. The frame of the seat back is attached to the floor or the like at the seat width outside or at the same position as the seat width than the belt buckle. Therefore, the seat back is attached at a position wider in the seat width direction than the conventional structure attached to the seat width center side than the belt buckle. As a result, the seat back can be attached to the floor or the like in a strong state against twisting or the like.

  According to the second aspect of the present invention, the seat cushion is movably or detachably attached to the floor. The belt buckle is attached to the floor side. The seat back frame mounting portion is rotatably mounted on the floor side behind the belt buckle. The seat back rotates in the space released by the movement or removal of the seat cushion and moves to the storage position.

  Therefore, the seat back can rotate greatly and approach the floor as compared with the conventional structure that falls on the seat cushion. Therefore, the seat back tends to interfere with the belt buckle provided on the floor side. However, the main body of the frame of the present invention is located closer to the seat width center than the belt buckle. Therefore, the height of the seat back at the storage position can be lowered, which can increase the height of the cargo compartment of the vehicle.

It is a perspective view of the vehicle seat in a use state. It is a perspective view of the vehicle seat in the middle state between the use state and the storage state. It is a perspective view of the vehicle seat in the stored state. It is a left view of the vehicle seat in use state. It is a left view of the vehicle seat in the retracted state. It is a partial perspective view of the frame of a vehicle seat. FIG. 7 is a sectional view taken along line VII-VII in FIG. 4. FIG. 6 is a partial top view of FIG. 5.

  One embodiment of the present invention will be described with reference to FIGS. The seat 1 is mounted on a floor 10 of a vehicle such as a vehicle as shown in FIG. For example, the seat 1 is mounted on the floor 10 so as to be used as a third row seat of an automobile having a third row seat. The seat 1 includes a base 4, a seat cushion 2 that is movably attached to the base 4, and a seat back 3, and changes between the use state of FIG. 1 and the storage state of FIG. 3. In the use state, the seat back 3 stands up in the vicinity of the rear portion of the seat cushion 2. In the retracted state, the seat back 3 falls to the front position of the seat cushion 2.

  As shown in FIGS. 1 and 6, the base 4 includes left and right guide members 4a, a front member 4b that connects the front portions of the left and right guide members 4a, and a pair of links 4c that are rotatably attached to the front member 4b. Have. The guide member 4a is erected with respect to the floor 10 and extends in the front-rear direction. A guide groove 4a1 for guiding the rear portion of the seat cushion 2 is formed in the guide member 4a. The guide groove 4a1 extends rearward and downward from the upper part of the guide member 4a. One end of the link 4c is rotatably attached to the front member 4b, and the other end is rotatably attached to the front lower portion of the seat cushion 2.

  As shown in FIG. 4, a pin 2 a that protrudes outward from the left and right sides is provided at the rear portion of the seat cushion 2. The pin 2a is inserted into the guide groove 4a1 and moves along the guide groove 4a1. As a result, the rear portion of the seat cushion 2 moves from the use position to the rear lower storage position along the guide groove 4a1. The guide member 4a is provided with a lock device 7 that locks the pin 2a so as to be releasable at the use position. The lock device 7 can be released by being operated by release levers 9a and 9c connected by cables. The release lever 9a is attached to the substantially back center of the seat back 3 so as to be tiltable. The release lever 9c is attached to the front lower portion of the seat cushion 2 so as to be tiltable.

  As shown in FIGS. 4 and 6, the seat back 3 includes a back leg frame 3a, a side frame 3b, a connecting bar 3c, and the like as frames. The back leg frame 3 a extends from the left and right lower sides of the seat back 3 toward the base 4. The tip of the back leg frame 3 a is attached to a reclining device 5 mounted on the base 4. Therefore, the seat back 3 is connected to the base 4 so that the angle can be adjusted by the reclining device 5.

  The reclining device 5 is released by the release levers 9 a and 9 b so that the seat back 3 can rotate with respect to the base 4. Therefore, the seat back 3 rotates between the standing use position shown in FIG. 4 and the retracted position shown in FIG. The release lever 9b is attached to the upper corner of the seat back 3 so as to be tiltable.

  As shown in FIG. 6, the side frame 3b extends upward from the back leg frame 3a. The connection bar 3c connects the lower portions of the pair of back leg frames 3a. A pad 3e is attached to the side frame 3b and the connecting bar 3c, and a skin material 3f is attached to the surface of the pad 3e. The back leg frame 3a integrally includes a mounting portion 3a1, an extending portion 3a2, and a connecting portion 3a3. The attachment portion 3a1 is attached to the reclining device 5. The extending portion 3a2 extends obliquely from the attachment portion 3a1 to the center side of the sheet width and upward. The connecting portion 3a3 extends upward from the extending portion 3a2 and is connected to the side frame 3b. The connecting portion 3a3 and the side frame 3b constitute a main body portion 3g of the frame.

  A seat belt for restraining a user seated on the seat 1 is attached to the seat 1. 4 and 6, the seat belt is provided in the vicinity of the lower corner portion of the seat back 3, and in the vicinity of the upper corner portion of the seat back 3 at a diagonal position of the lower attachment body 8. It has an upper mounting body (not shown). The upper attachment body has a webbing disposed on the front side of the seat back 3 and a tongue that is movably attached to the webbing. The lower attachment body 8 has an arm 8b that is rotatably attached to the base 4 and a belt buckle 8a that is attached to the tip of the arm 8b. The tongue of the lower attachment body is releasably engaged with the belt buckle 8a.

  As shown in FIGS. 5 and 7, the arm 8b is a metal plate. The arm 8b and the spacer 12 are rotatably attached to the guide member 4a by a pin 13. The arm 8 b is located on the front side of the reclining device 5 and rotates in the front-rear direction adjacent to the seat cushion 2. The arm 8 b is erected rearward by a spring 11 attached to the pin 13. Thereby, the belt buckle 8a is located in the vicinity of the upper surface of the seat cushion 2.

  When changing the seat 1 from the use state of FIG. 1 to the retracted state of FIG. 3, first, the headrest 6 attached to the seat back 3 so as to be adjustable in height is moved downward toward the seat back 3 as shown in FIG. Let Next, the lock lever 7 is released by operating the release lever 9a or 9c, and the seat cushion 2 is moved backward.

  As a result, the seat cushion 2 is guided by the link 4c and moved rearward as shown in FIGS. The link 4c rotates from the use position in which the upper end portion is located on the front side of the lower end portion to the storage position where the upper end portion falls behind the lower end portion and the link 4c becomes substantially horizontal. The rear portion of the seat cushion 2 is guided by the guide groove 4a1 and slides rearward and downward. Thereby, the height of the seat cushion 2 is lower at the storage position than at the use position.

  Next, as shown in FIGS. 4 and 5, the reclining device 5 is released by the release lever 9a or 9b. Then, the seat back 3 is rotated forward around the reclining device 5, and the seat back 3 is tilted from the use position to the retracted position in front of the seat cushion 2. The retracted position of the seat back 3 is a position where the seat cushion 2 is located in the use state, and is a space where the seat cushion 2 is moved and released in the retracted state.

  As shown in FIGS. 3 and 5, a recessed portion 3 d is formed in the front corner portion of the seat back 3. The recess 3d is located in the vicinity of the extension 3a2 of the frame and can receive the belt buckle 8a. Therefore, by rotating the seat back 3 from the use position to the storage position, the rear portion of the belt buckle 8a hits the rear surface 8d1 of the recess 3d. Accordingly, the lower attachment body 8 rotates forward together with the seat back 3 against the spring 11.

  As shown in FIGS. 5 and 8, the main body 3g of the frame of the seat back 3 is located closer to the seat width center side than the belt buckle 8a. On the other hand, the attachment portion 3a1 of the frame is located outside the seat width from the center of the belt buckle 8a. The extension 3a2 of the frame is located on the rear side of the belt buckle 8a and extends in the seat width direction. When the seat back 3 rotates from the use position to the storage position, the connecting portion 3a3 (main body portion 3g) moves from the rear upper position of the belt buckle 8a to an adjacent position adjacent in the seat width direction. The extending portion 3a2 is located above the belt buckle 8a.

  When the seat 1 is changed from the retracted state shown in FIG. 5 to the used state shown in FIG. 4, the seat back 3 is rotated backward to stand up. Then, the seat back 3 is locked at a predetermined angle with respect to the floor 10 by the reclining device 5. The lower attachment body 8 is rotated backward by a spring 11 and stands. Next, the seat cushion 2 is moved forward from the storage position shown in FIG. 5 to the use position shown in FIG.

  As described above, the belt buckle 8a is located on the outer side of the seat width than the main body 3g of the frame of the seat back 3 as shown in FIGS. The frame of the seat back 3 extends from the main body portion 3g to the outside of the seat width, and extends from the extension portion 3a2 so as to be rotatable on the floor 10 side at the seat width outside of the belt buckle 8a. It has a mounting portion 3a1. As the seat back 3 rotates to the retracted position, the main body 3g of the frame moves from the rear upper position of the belt buckle 8a to an adjacent position adjacent in the seat width direction.

  Therefore, the belt buckle 8a is located on the outer side of the seat width than the main body 3g of the frame. Therefore, the belt buckle 8a is easily located on the outer side of the seat width than the buttocks of the user seated on the seat 1, and does not easily disturb the user. The main body 3g of the frame is adjacent to the belt buckle 8a in the seat width direction at the storage position. Therefore, it is easy to move the seat back 3 to a lower position toward the floor. The frame of the seat back 3 is attached to the floor 10 on the outer side of the seat width than the belt buckle 8a. Therefore, the seat back 3 is attached at a position wider in the seat width direction than the conventional structure attached to the center side of the seat width than the belt buckle 8a. As a result, the seat back 3 can be attached to the floor 10 in a strong state against twisting or the like.

  The seat cushion 2 is movably attached to the floor 10 as shown in FIGS. The belt buckle 8a is attached to the floor 10 side. A mounting portion 3a1 of the frame of the seat back 3 is rotatably mounted on the floor 10 side behind the belt buckle 8a. The seat back 3 rotates in the space released by the movement of the seat cushion 2 and moves to the storage position.

  Therefore, the seat back 3 can rotate greatly and approach the floor 10 as compared with the conventional structure that falls on the seat cushion 2. Therefore, the seat back 3 tends to interfere with the belt buckle 8a provided on the floor 10 side. However, the main body 3g of the frame according to the present embodiment is located closer to the seat width center side than the belt buckle 8a. Therefore, the height of the seat back 3 at the retracted position can be lowered, which can increase the height of the luggage compartment of the vehicle.

(Other embodiments)
The present invention is not limited to the above-described embodiment, and may be the following form.
(1) The seat back 3 of the above embodiment is rotatably attached to the floor via the base 4 as shown in FIGS. However, the seat back may be rotatably attached to the seat cushion, and the seat back may rotate to a standing position where the seat back stands with respect to the seat cushion and the floor, and a retracted position where the seat back falls on the seat cushion.
(2) The mounting portion 3a1 of the seat back 3 according to the above embodiment is located closer to the seat center than the outer surface of the belt width of the belt buckle 8a as shown in FIG. However, the attachment portion 3a1 may be positioned outside the seat width outer side surface of the belt buckle 8a. Alternatively, it may be positioned at the same seat width position as the center of the belt buckle 8a.
(3) The lower attachment body 8 of the above embodiment is attached to the floor 10 via the base 4. However, the lower attachment body 8 may be attached to the floor without using a base or the like. Or you may attach to other seat members, such as a seat cushion.
(4) The belt buckle 8a of the above embodiment is attached to the floor 10 via the arm 8b. However, the belt buckle may be attached to the floor or the like via webbing or the like.
(5) The seat cushion 2 of the above embodiment moves backward from the use position and moves to the storage position. However, the seat cushion may be moved from the use position to the front storage position, and the seat back may be brought down in the space released by the movement of the seat cushion.
(6) The seat cushion 2 of the above embodiment is attached to the floor 10 so as to be movable back and forth. However, the seat cushion may be removably attached to the floor, and the seat back may be laid down in a space that is released by removing the seat cushion.

DESCRIPTION OF SYMBOLS 1 ... Seat 2 ... Seat cushion 3b ... Side frame 3 ... Seat back 3a ... Back leg frame 3a1 ... Attachment part 3a2 ... Extension part 3a3 ... Connection part 3d ... Recess 3g ... Main part 4 ... Base 5 ... Reclining device 8 ... Bottom Side attachment body 8a ... belt buckle 8b ... arms 9a-9c ... release lever 10 ... floor 13 ... pin

Claims (2)

A vehicle with a belt buckle, comprising: a seat back that is rotated to a use position that stands up with respect to the floor of the vehicle; and a storage position that is tilted forward from the use position; Seat for
The belt buckle is located outside the seat width of the main body of the seat back frame;
The frame of the seat back extends from the main body portion to the outside of the seat width, and extends from the extension portion to the floor side or at the same position as the seat width outside or the seat width from the belt buckle. It has a mounting part that can be rotatably mounted on the seat cushion side,
The vehicle seat with a belt buckle, wherein the seat back is rotated to the retracted position so that the main body of the frame moves from a rear upper position of the belt buckle to an adjacent position adjacent in the seat width direction. A vehicle seat with a belt buckle according to claim 1,
The seat cushion is movably or detachably attached to the floor,
The belt buckle is attached to the floor side,
The mounting part of the seat back frame is rotatably mounted on the floor side behind the belt buckle,
A vehicle seat with a belt buckle, wherein the seat back rotates and moves to a retracted position in a space released by moving or removing the seat cushion.

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