JP2010000975A - Vehicular seat with assist grip - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To keep an attitude by positioning an assist grip at an appropriate position suitable for an occupant's physique. <P>SOLUTION: The assist grip emerging/retracting moving means which freely allows the assist grip 4 to emerge and retract at an appropriate position from the seat cushion 2 according to the physique of the occupant M linking with the seating of the occupant M to the seat cushion 2 is provided under the seat cushion 2. The assist grip emerging/retracting moving means is equipped with a spring 5 deflected by receiving the load of the sitting occupant, a rotating transmission member 6 which is connected with the spring and turns according to the deflection amount, a gear 8 rotated by meshing with a gear 7 formed on the rotating transmission member 6, and a cam member 10 having the assist grip which rotates by being mounted at the eccentric position with respect to the rotating shaft 9 of the gear 8. The assist grip emerges and retracts from the seat cushion by the rotation of the cam member, and moves in the direction approaching to/separating from the occupant. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle seat with an assist grip, and more particularly, to a technique for moving an assist grip position in and out of a seat cushion to an optimal position according to the physique of an occupant.

For example, a technique is disclosed in which an assist grip for supporting the body during turning or braking of an automobile is provided on the outer surface of the front portion or the rear portion of the seat cushion frame (for example, described in Patent Document 1).
Japanese Utility Model Publication No. 58-73044

  However, in the structure described in Patent Document 1, since the assist grip is provided on the outer surface of the front portion or the rear portion of the seat cushion frame, the assist grip may interfere with the body, luggage or the like when getting on and off the seat.

  In addition, in the structure described in Patent Document 1, since the position of the assist grip is fixed, depending on the occupant's physique, the assist grip may not be gripped or the assist grip may not be gripped with an appropriate force. .

  Therefore, the present invention is for a vehicle with an assist grip that prevents the body from interfering with the assist grip when the passenger gets on and off the seat and can maintain the posture by positioning the assist grip at an optimum position according to the occupant's physique. The purpose is to provide a sheet.

  The vehicle seat with an assist grip according to the present invention has an assist grip in / out movement means that allows the assist grip to move in and out from the seat cushion to an appropriate position according to the occupant's physique in conjunction with the seating of the passenger on the seat cushion. It is provided on the seat cushion.

  According to the vehicle seat with an assist grip of the present invention, the assist grip moves in and out of the seat cushion at an appropriate position in accordance with the occupant's physique in conjunction with the occupant sitting on the seat cushion by the assist grip in / out movement means. Since it becomes movable, the assist grip is positioned at the optimum position according to the physique of various occupants such as small women and large men, and the posture can be maintained when the vehicle is turning or braking.

  Further, according to the vehicle seat with an assist grip of the present invention, when the occupant is not seated, the assist grip is stored at a position where it is submerged from the seat cushion, so that the body contacts the assist grip when getting on and off the seat cushion. Can be prevented.

  Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings.

  1A is a plan view of a vehicle seat with an assist grip according to the present embodiment, FIG. 1B is a side view thereof, FIG. 2A is a cross-sectional view taken along the line AA in FIG. (B) is a cross-sectional view showing a state in which the spring is bent and the assist grip protrudes from the seat cushion when the occupant is seated on the seat cushion, and FIG. 3 (A) is the assist grip when the occupant with a small physique is seated. FIG. 3B is a view showing the movement position of the assist grip when an occupant with a large physique is seated, FIG. 4 is an enlarged view of the main part of the assist grip protruding and moving means, and FIG. FIG. 6 is a view showing the correspondence between the rotational position and the height position of the assist grip attached to the cam member with respect to the seat cushion, and FIG. 6 shows the rotational position of the cam member and the assist grip attached to the cam member. FIG. 7 is a diagram showing a correspondence relationship between the position of the vehicle in the vehicle width direction, FIG. 7 is a diagram in which the anchor of the seat belt is attached to the assist grip, and the anchor is moved in and out together with the assist grip, and FIG. It is a schematic block diagram when adopting as a bench seat.

  As shown in FIG. 1, the vehicle seat 1 of the present embodiment is provided with assist grips 4 on both sides of the occupant of the seat cushion 2 out of the seat cushion 2 and the seat back 3. The seat shown in FIG. 1 shows an example of a passenger seat next to the driver.

  The assist grip 4 is moved from the seat cushion 2 to an appropriate position (optimum position) according to the physique of the occupant M in conjunction with the seating of the occupant M on the seat cushion 2 by means of the assist grip protruding and retracting means shown in FIG. It is supposed to move freely. The appropriate position means that when an occupant Ms having a small physique sits on the seat cushion 2, the assist grip 4 appears and disappears at a height position and a vehicle width direction position at which the occupant Ms is most easily gripped as shown in FIG. When the occupant Mb having a large physique moves and sits on the seat cushion 2, the assist grip 4 moves up and down to a height position and a vehicle width direction position at which the occupant Mb is most easily gripped as shown in FIG. .

  In the case of the occupant Ms having a small physique, the assist grip 4 moves so that the grip height Hs protruding from the seat cushion 2 is high and the left and right grip width Ws is small. On the other hand, the assist grip 4 has a low grip height Hb protruding from the seat cushion 2 and a large left and right grip width Wb in the case of an occupant Mb having a large physique.

  As shown in FIGS. 2 and 4, the assist grip in / out movement means is connected to the spring 5 which is a load receiving member which is bent by receiving the load of the occupant M seated on the seat cushion 2 and is connected to the spring 5. A rotation transmission member 6 that rotates according to the amount of bending of the spring 5, a gear 8 that rotates in mesh with a gear 7 formed on the rotation transmission member 6, and a position that is eccentric with respect to the rotation shaft 9 of the gear 8. And a cam member 10 which is a rotating body to which an assist grip 4 that is attached and rotates is attached.

  The spring 5 is provided with one end fixed to both ends of a connecting rod 11 disposed in the seat cushion center position in the seat cushion 2 with its longitudinal direction facing the vehicle width direction. The springs 5 are attached to the left and right sides of the connecting rod 11, respectively, and the connecting rod 11 disposed just below the buttocks is pushed downward under the seat under the load when the occupant M is seated on the seat cushion 2. It is sometimes pulled and bent. That is, the spring 5 functions as a load receiving member that bends under the load of the occupant M seated on the seat cushion 2.

  The rotation transmitting member 6 has one end 6a connected to the spring 5 and a gear 7 at the other end 6b. The rotation transmitting member 6 is installed on a cushion pan (not shown) provided in the seat cushion 2. The shaft 12 is rotatable. The gear 7 is formed as an arc shape. Such a rotation transmission member 6 has a so-called “leverage principle” with one end 6a on which the expansion and contraction force generated by the bending of the spring 5 acts, the rotation shaft 12 as a fulcrum, and the gear 7 as an action point. It is supposed to work.

  The gear 8 rotates in a clockwise direction or a counterclockwise direction around a rotation shaft 9 provided on the cushion pan. The gear 8 is formed in a disk shape and meshes with the gear 7 to rotate.

  The cam member 10 has an elliptical shape, and is fixed to the rotating shaft 9 with an eccentric position deviating from the center as a rotation center. The assist grip 4 is fixed to the cam member 10 at a position farthest from the rotation shaft 9.

  The assist grip in / out moving means comprising the above components moves the assist grip 4 in / out as follows. When the occupant M sits on the seat cushion 2, the connecting rod 11 placed under the buttocks under the load is pushed downward in the seat. Then, the spring 5 connected to both ends of the connecting rod 11 is pulled and extended by the connecting rod 11 pushed downward in the seat. The extension force of the spring 5 at this time causes the rotation transmitting member 6 to rotate in the clockwise direction based on this principle with the rotating shaft 12 as the center of rotation.

  Then, the gear 8 that meshes with the gear 7 of the rotation transmission member 6 rotates in the counterclockwise direction around the rotation shaft 9, contrary to the rotation direction of the rotation transmission member 6. As a result, when the gear 8 rotates, the assist grip 4 changes the grip height and the grip width by the cam member 10 that is eccentrically attached to the rotation shaft 9 of the gear 8. Since the assist grip 4 is attached at a position eccentric from the rotational center position of the cam member 10, the assist grip 4 protrudes and retracts from the seat cushion 2 to change the grip height position, and is an opposing distance between the assist grips 4. Change the grip width.

  When the occupant M descends from the vehicle seat 1, the load acting on the spring 5 is reduced, so the operation is reversed and the assist grip 4 is submerged under the original seat cushion 2.

  FIG. 5 shows how the grip height position H of the assist grip 4 changes, and FIG. 6 shows how the grip width W of the assist grip 4 changes. The grip height position H and the grip width W of the assist grip 4 are set so as to be the optimum positions according to the physique of the occupant M, respectively. Hereinafter, the optimum position according to the physique of the passenger M will be described.

  The grip height H of the assist grip 4 is as shown in FIG. 5A when there is no bending amount of the spring 5 that is bent by receiving a load from the occupant M as shown in FIG. 4 is a position where the seat cushion 2 is submerged in a position lower than the seat surface position S. Further, the grip width W of the assist grip 4 at this time is a width that is set to a position approaching the center position C of the seat cushion 2 as shown in FIG.

  When the occupant M starts to sit on the seat cushion 2, the grip height H of the assist grip 4 is set to the seating surface of the seat cushion 2 as shown in FIG. A small amount protrudes upward from the position S. Further, as shown in FIG. 6B, the grip width W of the assist grip 4 at this time is slightly widened as the assist grips 4 move away from each other.

  At this time, as shown in FIG. 3A, for example, when the physique of the occupant M is small (light weight) like a small woman, the assist grip 4 is raised while the grip height H of the assist grip 4 is increased. The grip width W is reduced so as to come near both sides of the buttocks that are easy to grip. That is, when the occupant M is small in size, the assist grip 4 is arranged at the highest position from the seating surface position S of the seat cushion 2 as shown in FIG. The amount of rotation of the cam member 10 is determined so that the distance between the assist grips 4 becomes small as shown in FIG.

  On the other hand, as shown in FIG. 3B, for example, when the occupant M is large (heavy) such as a large man, the grip height H of the assist grip 4 is lowered (small). At the same time, the grip width W is increased so as to come near the both sides of the buttocks where the assist grip 4 can be easily gripped. That is, when the occupant M has a large physique, as shown in FIG. 5 (E), the occupant M slightly protrudes from the seat surface position S of the seat cushion 2, which is the position at which the assist grip 4 is most easily gripped. At the same time, the rotation amount of the cam member 10 is determined so that the distance between the assist grips 4 becomes large as shown in FIG.

  In the case of the occupant M having an average physique, the rotation amount of the cam member 10 is determined so as to be intermediate between the occupant Ms having a small physique and the occupant Mb having a large physique. The grip height of the assist grip 4 in this case is between a small occupant and a large occupant as shown in FIG. Similarly, as shown in FIG. 6D, the grip width W of the assist grip 4 is between a small occupant and a large occupant.

  Table 1 shows the relationship between the load applied to the seat cushion 2 and the grip height of the assist grip 4, and Table 2 shows the relationship between the load applied to the seat cushion 2 and the grip width of the assist grip 4.

また、本実施形態の車両用シート１においては、図１（Ｂ）及び図７に示すように、一方のアシストグリップ４にシートベルト（図示は省略する）を装着させるアンカ１３を取り付け、このアンカ１３を前記アシストグリップ４と共にシートクッション２に対して出没移動させる。アンカ１３は、車体フロアなどに固定されたベルト１４の先端に設けられ、図示を省略する取付け手段で前記アシストグリップ４に取り付けられている。

Further, in the vehicle seat 1 of the present embodiment, as shown in FIGS. 1B and 7, an anchor 13 for attaching a seat belt (not shown) is attached to one assist grip 4. 13 is moved together with the assist grip 4 with respect to the seat cushion 2. The anchor 13 is provided at the tip of the belt 14 fixed to the vehicle body floor or the like, and is attached to the assist grip 4 by attachment means (not shown).

  Therefore, the anchor 13 moves to the mounting position most suitable for the physique of the occupant M together with the assist grip 4 that moves in and out when the occupant M sits on the seat cushion 2.

  Moreover, in the vehicle seat 1 of the present embodiment, as shown in FIG. 8, the bench seat 15 may be provided with the assist grip protruding and retracting means of the present invention. By providing a space or a guide where the assist grip 4 can move in and out at the center of the seat cushion of the bench seat 15, the assist grip 4 can be arranged at an appropriate position according to the physique of the occupant M.

  According to the vehicle seat with an assist grip configured as described above, the assist grip 4 is interlocked with the occupant M seated on the seat cushion 2 by the assist grip in / out movement means, depending on the physique of the occupant M. Since the seat cushion 2 can be moved to and from an appropriate position, the assist grip 4 is positioned at an optimum position according to the physique of various occupants M, such as small women and large men. Holds posture during braking.

  Further, according to the vehicle seat with an assist grip of the present embodiment, when the occupant M is not seated, the assist grip 4 is stored at a position where it is sunk from the seat cushion 2, so Can be prevented from contacting the assist grip 4.

  Moreover, according to the vehicle seat with an assist grip of the present embodiment, since the assist grip in / out moving means having a simple configuration using the lever principle is used, the apparatus cost can be suppressed.

  Further, according to the assist grip vehicle seat of the present embodiment, when the amount of deflection of the spring 5 provided below the seat cushion 2 is small, the protrusion amount and the opposing distance of the assist grip 4 increase, so that the small passenger M The assist grip 4 can be moved up and down to the position. In addition, according to the assist grip vehicle seat, when the amount of bending of the spring 5 is large, the protrusion amount and the facing distance of the assist grip 4 are reduced, so that the assist grip 4 can be moved into and out of an appropriate position of the large passenger M. Can do.

  Further, according to the assist grip vehicle seat of the present embodiment, since the spring 5 is used as the load receiving member, the manufacturing cost of the assist grip protruding and moving means can be reduced.

  Further, according to the assist grip vehicle seat of the present embodiment, the anchor 13 for attaching the seat belt is attached to the assist grip 4, and the anchor 13 is moved in and out together with the assist grip 4. Therefore, except when the passenger M is seated. Since the anchor 13 is stored under the seat cushion 2 in conjunction with the assist grip 4, it does not interfere with the passenger M getting on and off.

  Further, according to the assist grip vehicle seat of the present embodiment, the assist grip in / out movement means of the present invention is applied to the bench seat 15 so that the assist grip 4 can be appropriately adapted to the bench seat 15 according to the physique of the occupant M. It can be moved to the position.

FIG. 1A is a plan view of a vehicle seat with an assist grip according to the present embodiment, and FIG. 1B is a side view thereof. 2A is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 2B is a cross-sectional view showing a state where the spring is bent and the assist grip protrudes from the seat cushion when an occupant sits on the seat cushion. FIG. FIG. 3A is a diagram showing the movement position of the assist grip when an occupant with a small physique is seated, and FIG. 3B is a diagram showing the movement position of the assist grip when an occupant with a large physique is seated. FIG. 4 is an enlarged view of a main part of the assist grip appearance moving means. FIG. 5 is a diagram showing the correspondence between the rotational position of the cam member and the height position of the assist grip attached to the cam member with respect to the seat cushion. FIG. 6 is a diagram showing the correspondence between the rotational position of the cam member and the position in the vehicle width direction of the assist grip attached to the cam member. FIG. 7 is a view in which the anchor of the seat belt is attached to the assist grip, and the anchor is moved together with the assist grip. FIG. 8 is a schematic configuration diagram when the assist grip appearance moving means of the present embodiment is adopted for a bench seat.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Vehicle seat 2 ... Seat cushion 3 ... Seat back 4 ... Assist grip 5 ... Spring (load receiving member)
6 ... Rotation transmission member 7 ... Gear 8 ... Gear 9 ... Rotating shaft (Rotating shaft of gear and cam member)
DESCRIPTION OF SYMBOLS 10 ... Cam member 11 ... Connecting rod 12 ... Rotating shaft (Rotating shaft of a rotation transmission member)
13 ... Anka 15 ... Bench seat

Claims (5)

In a vehicle seat comprising: a seat comprising a seat cushion and a seat back; and assist grips provided on both sides of the occupant of the seat cushion,
Assist grip characterized in that it includes an assist grip in / out movement means that allows the assist grip to move in / out from the seat cushion to an appropriate position according to the occupant's physique in conjunction with the seating of the occupant. With vehicle seat. The vehicle seat with an assist grip according to claim 1,
The assist grip in / out moving means is a load receiving member that is bent by receiving a load of an occupant seated on the seat cushion, and a rotation that is connected to the load receiving member and rotates in accordance with the bending amount of the load receiving member. A transmission member, a gear that meshes with and rotates with a gear formed on the rotation transmission member, and a cam member to which the assist grip is attached and rotated at a position eccentric to the rotation axis of the gear; A vehicle seat with an assist grip, characterized in that the assist grip moves in and out of the seat cushion and moves toward and away from an occupant by rotation of the cam member. A vehicle seat with an assist grip according to claim 2,
When there is no amount of bending of the load receiving member that receives the load from the occupant, the assist grip is in a position where it is submerged in the seat cushion,
When the amount of deflection of the load receiving member is small, the protruding amount by which the assist grip protrudes upward from the seat cushion and the opposing distance in which both assist grips approach each other increase.
When the load receiving member has a large amount of deflection, the amount of protrusion of the assist grip protruding upward from the seat cushion and the opposing distance in which both assist grips approach each other are reduced. A vehicle seat with an assist grip according to claim 2,
The vehicle seat with an assist grip, wherein the load receiving member includes a spring arranged in a vehicle width direction under the seat cushion. A vehicle seat with an assist grip according to any one of claims 1 to 4,
A vehicle seat with an assist grip, wherein an anchor for attaching a seat belt is attached to the assist grip, and the anchor is moved together with the assist grip.

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