JP5693861B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat configured such that a seated person sitting on a seat cushion can receive a push-up force due to the rise of the seat cushion when getting off the vehicle.

A conventional vehicle seat related to this is described in Patent Document 1.
As shown in FIG. 8, the vehicle seat of Patent Document 1 includes a seat cushion 100 including a cushion front portion 102 and a cushion rear portion 103. The lower front end portion of the cushion front portion 102 is connected to the front end portion of the seat frame 106 by a hinge 105, and the rear lower end portion of the cushion front portion 102 is connected to the lower front end portion of the cushion rear portion 103 by a hinge 107. Further, the cushion rear portion 103 is supported from below by a damper 108.
With the above configuration, when the occupant gets off, the seat cushion 100 operates to push up the buttock of the occupant with the force of the damper 108. This makes it easier for the seated person to get up, and even a seated person with reduced physical strength can get off the vehicle with his own power.

JP 2007-237804 A

  However, in the vehicle seat described above, the seat cushion 100 pushes up the buttocks of the seated person when the seated person tries to stand up regardless of the position of the seated person. For this reason, when a seated person tries to stand up with his upper body raised, the head of the seated person may hit the ceiling of the entrance of the vehicle.

  The present invention has been made to solve the above-described problems, and the problem to be solved by the present invention is that when the occupant gets out of the vehicle, the occupant does not touch the ceiling of the entrance / exit. Is to do so.

The above-described problems are solved by the inventions of the claims.
The invention according to claim 1 includes a seat cushion and a cushion lifting mechanism configured to raise at least a part of the seat cushion, and the seat occupant seated on the seat cushion takes the seat cushion when getting off the vehicle. An operation switch for operating the drive unit of the cushion lifting mechanism when the door that is opened when the passenger gets off the vehicle is not opened to a predetermined position. Even if operated, the drive unit is configured not to operate, and the operation switch is located on the indoor side of the door, and a seated person who rotates the door to a predetermined position in the opening direction It is arranged under the window of the door so that it can be operated in a forward leaning posture by taking it out of the vehicle.

According to the present invention, the operation switch of the drive unit of the cushion raising / lowering mechanism is disposed on the indoor side of the door that is opened when the passenger gets off the vehicle and below the window of the door, and the door is opened when the door is opened. The drive unit is configured to operate when an operation switch is operated. For this reason, the seated person opens the door at the time of getting off, and then naturally raises the upper body to the outside of the vehicle and operates the operation switch in a forward leaning posture. Then, when the seated person operates the operation switch, the cushion raising / lowering mechanism operates to raise the seat cushion. That is, the seated person stands up in the forward leaning posture because the buttocks are pushed up by the seat cushion in the forward leaning state. This prevents the seated person from hitting his / her head against the ceiling of the vehicle entrance / exit. Further, even if the seated person accidentally touches the operation switch during driving, the movable seat portion does not rise.

According to the second aspect of the present invention, the drive unit of the cushion raising / lowering mechanism includes the motor, and the operation switch is turned on only while it is operated, and power can be supplied to the motor only while the operation switch is turned on. It is comprised by these.
For this reason, the seated person always maintains the forward leaning posture by operating the operation switch while the seat cushion is raised. As a result, it becomes difficult for the seated person's head to hit the ceiling of the entrance.

If according to the invention of claim 3, cushions lifting mechanism, characterized in that said lower at least a portion of the seat cushion on the outside of the vehicle, is configured to be raised in an inclined to be higher at the indoor side And

  According to the present invention, when the occupant gets off, the occupant does not hit his head against the ceiling of the entrance.

It is a model perspective view (A figure) showing the state at the time of vehicle driving | running | working of the vehicle seat which concerns on this Embodiment 1 of this invention, and is a model perspective view (B figure) showing the state at the time of a vehicle seat getting off. It is a longitudinal cross-sectional view (II-II arrow longitudinal cross-sectional view of FIG. 1 (B)) showing the state at the time of alighting of the said vehicle seat. It is a front view (III-III arrow line view of FIG. 2) showing the cushion raising / lowering mechanism of the said vehicle seat. It is a schematic diagram showing the electric circuit of the motor which is a drive source of the said cushion raising / lowering mechanism. It is a perspective view of the door to which the operation switch of the motor was attached. It is a rear view showing operation | movement of the said vehicle seat. It is a rear view showing operation | movement of the said vehicle seat. It is a side view showing the conventional vehicle seat.

[Embodiment 1]
Hereinafter, the vehicle seat according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 7.
Here, front and rear, left and right and up and down in the figure correspond to front and rear, left and right and up and down of a vehicle seat and a passenger car on which the vehicle seat is installed. In addition, front and rear, right and left, and top and bottom in the specification also correspond to the above-described front and rear, left and right and top and bottom.

<About the outline of the vehicle seat 10>
As shown in FIGS. 6 and 7, the vehicle seat 10 according to this embodiment is a seat configured to be seated from the right direction through the right entrance 3 in the passenger car 2 having a relatively low vehicle height. (Driver's seat etc.).
As shown in FIGS. 1A and 1B, the vehicle seat 10 includes a seat body 30, a front / rear slide mechanism 20 that slides the seat body 30 back and forth with respect to the passenger compartment floor F, and the like.
The seat body 30 includes a seat frame 31, a seat cushion 40 installed on the seat frame 31, a seat back 35 connected to the rear end portion of the seat frame 31 in a vertically rotatable manner, and a seat cushion. A cushion lifting mechanism 50 that lifts and lowers a part M (42, 44c) of the seat 40 with respect to the seat frame 31 and the like is configured.

<About seat cushion 40>
As shown in FIG. 1A, the seat cushion 40 includes a cushion front portion 41, a cushion central portion 42, and a cushion rear portion 43 in order from the front side of the central portion. (Omitted) side) is provided with a right side portion 44, and a left side portion 45 is provided on the left side of the central portion (chamber interior side).
The cushion front portion 41 is a portion that mainly supports the thigh of the seated occupant, and is formed in a state of being gently inclined so that the seating surface is lowered on the rear side. The cushion central portion 42 is a portion that mainly supports the occupant's buttocks, and is formed flat with the seating surface at the lowest position. The cushion rear portion 43 is formed in a gently inclined state so as to be lowered in the front.
The right side portion 44 is formed in a state where the seating surface is inclined so as to be higher on the right side (the entrance / exit side), and is divided into a front portion 44f, a central portion 44c, and a rear portion 44b. The left side portion 45 is formed in an inclined state so that the seating surface becomes higher on the left side (chamber interior side).

The cushion central portion 42 of the seat cushion 40 and the central portion 44c of the right side portion 44 are integrated, and other portions of the seat cushion 40, that is, the front portion 44f and the rear portion 44b of the right side portion 44 and the cushion front portion are integrated. The portion 41, the left side portion 45, and the cushion rear portion 43 are divided. The front part 44 f, the rear part 44 b, the cushion front part 41, the left side part 45, and the cushion rear part 43 of the right side part 44 of the seat cushion 40 are fixed to the seat frame 31. Therefore, the front portion 44f, the rear portion 44b, the cushion front portion 41, the left side portion 45, and the cushion rear portion 43 of the right side portion 44 of the seat cushion 40 are hereinafter referred to as a fixed seat portion S of the seat cushion 40. .
As shown in FIG. 1B, the cushion central portion 42 of the seat cushion 40 and the central portion 44c of the right side portion 44 serve as a fixed seat portion of the seat cushion 40 by the action of a cushion lifting mechanism 50 (described later). S and the seat frame 31 can be moved up and down. For this reason, the cushion central portion 42 of the seat cushion 40 and the central portion 44c of the right side portion 44 are hereinafter referred to as a movable seat portion M of the seat cushion 40.

<About the cushion lifting mechanism 50>
The cushion raising / lowering mechanism 50 raises the movable seat M of the seat cushion 40 with respect to the seat frame 31 and the fixed seat S of the seat cushion 40, and further tilts so that the entrance / exit side is lower and the indoor side is higher. Mechanism. As shown in the longitudinal sectional view of FIG. 2, the cushion lifting mechanism 50 includes a base plate 52 that is suspended and supported by the seat frame 31 and a pair of front and rear cross links 53 (FIG. 3) installed on the base plate 52. And a drive unit (not shown) for operating the cross links 53.
As shown in FIG. 2, the base plate 52 of the cushion raising / lowering mechanism 50 is bent and formed into a substantially U-shaped side shape, and the front end upper portion of the base plate 52 is bolted to the front portion of the seat frame 31. The upper part of the rear end of the base plate 52 is connected to a rear support tube 31t extending in the width direction at the rear part of the seat frame 31.

The pair of front and rear cross links 53 of the cushion raising / lowering mechanism 50 is configured to support the movable seat portion M of the seat cushion 40 from the front and rear and to raise and lower the movable seat portion M.
As shown in FIG. 3, the cross link 53 is composed of a linear first link 53a and a second link 53b, and the vicinity of the center of both links 53a and 53b is vertically rotated by a central connecting pin 53x. Connected in a possible state. And the base end part (lower end part) of the 1st link 53a is connected with the receiving part (illustration omitted) formed in the bottom right end of the base board 52 in the state which can be rotated up and down by the lower end connection pin 54. As shown in FIG. A roller 53r is attached to the tip (upper end) of the first link 53a, and the rail 53r is formed to extend in the left-right direction below the movable seat M of the seat cushion 40. It is comprised so that it can roll along 40f.
Further, the base end portion (upper end portion) of the second link 53b is connected to the vicinity of the right end of the rail portion 40f in the movable seat portion M of the seat cushion 40 in a state in which the upper end connecting pin 55 can be turned up and down. Further, a roller 53z is attached to the tip (lower end) of the second link 53b, and the roller 53z is configured to roll in the left-right direction along the bottom 52y of the base plate 52.

  The drive unit (not shown) of the cushion lifting mechanism 50 operates the first link 53a and the second link 53b of the cross link 53 in the standing direction or the lying down direction using the rotational force of the motor 56 (see FIG. 4). Thus, the movable seat M is moved up and down and inclined. That is, when the motor 56 rotates in the forward rotation direction, the drive unit operates in a direction in which the cross link 53 is erected. Accordingly, the movable seat portion M of the seat cushion 40 rises from the seating position, and the movable seat portion M is inclined at a predetermined angle toward the entrance / exit 3 in the process of raising the movable seat portion M to the upper limit position. Further, when the motor 56 rotates in the reverse rotation direction, the drive unit operates in a direction in which the cross link 53 is laid down. Thereby, the movable seat M of the seat cushion 40 is lowered and returned to the original seating position.

The motor 56 is configured to be driven by the electric circuit shown in FIG.
That is, the electric circuit includes an operation switch 57 operated by a seated person and a door switch that is turned on when the door 5 on the driver's seat side horizontally rotates in the opening direction beyond a predetermined angle (for example, about 30 °). It is comprised by LS etc. The seat cushion 40 is also provided with a weight detection sensor or the like, and is configured to be able to adjust the ON operation angle of the door switch LS according to the weight.
As shown in FIG. 5, the operation switch 57 is attached to the front side of the upper surface of the armrest 5 a provided on the indoor side of the door 5 and below the window W. As a result, when the occupant gets off, the occupant takes the upper body out of the entrance 3 with the door 5 horizontally rotated in the opening direction by a predetermined angle (about 30 °), and leans forward. The operation switch 57 is touched.

As shown in FIG. 4, the operation switch 57 is configured to be switchable in three directions of ascending, descending, and stopping. For example, the operation switch 57 is always held at the stop position by a spring force. At the stop position, both the ascending contact and the descending contact are open (OFF state). When the operation switch 57 is pushed in the upward direction against the spring force from this state, the upward contact is closed (the upward side is on) as shown in FIG. Further, when the operation switch 57 is pushed in the downward direction against the spring force, the downward contact is closed (down side on) during the push operation.
As shown in FIG. 4, the operation switch 57 is connected to the motor 56 via the door switch LS. For this reason, when the door 5 on the driver's seat side is opened beyond a predetermined angle (for example, about 30 °), the door switch LS is turned on, and the operation switch 57 is turned on or on the lower side, the motor Power is supplied to 56.
Even when the operation switch 57 is on the ascending side or the descending side, if the door 5 is not opened beyond a predetermined angle (for example, about 30 °), the door switch LS is off and the motor 56 Is not supplied.

<Operation of the vehicle seat 10 according to the present embodiment>
When the occupant seated in the vehicle seat 10 (driver's seat) gets off, first, as shown in FIG. 6, the door 5 is opened, the body is directed to the right side, and the legs from the entrance / exit 3 are removed. Try to get out of the car. In this state, the door 5 is horizontally rotated about 30 ° or more and held in a half-open state. Next, the seated person takes the upper body out of the entrance 3 and pushes the operation switch 57 in the upward direction. As described above, since the operation switch 57 is attached to the upper surface of the armrest 5a of the door 5, the seated person is inclined forward when operating the operation switch 57. In this way, when the operation switch 57 is pushed in the upward direction, power is supplied to the motor 56 of the cushion lifting mechanism 50, the motor 56 rotates in the forward direction, and the cross link 53 rises. To work. As a result, the movable seat portion M of the seat cushion 40 is raised, and the seated person's buttocks are pushed up by the movable seat portion M. At this time, since the seated person pushes the operation switch 57 in the forward leaning posture, even if the seated person's buttocks are pushed up by the movable seat part M (see FIG. 7), the seated person's head remains at the entrance / exit. It does not hit the ceiling part of 3. Then, as shown in FIG. 7, the motor 56 stops in a state where the movable seat portion M of the seat cushion 40 is raised to the upper limit position and is further inclined so that the entrance / exit 3 side is low and the indoor side is high. In this state, the seated person becomes a middle waist posture, and the knees are stretched to make it easy to stand up. As a result, even a seated person whose physical strength has decreased can get off the vehicle with his own power.
In order to lower the movable seat portion M to the original seating position from this state, the operation switch 57 is pushed in the downward direction while the door 5 remains open.

<Advantages of the vehicle seat 10 according to the present embodiment>
According to the vehicle seat 10 according to the present embodiment, the operation switch 57 of the motor 56 of the cushion raising / lowering mechanism 50 is on the indoor side of the door 5 that is opened when the passenger gets off, and the door 5 rotates to a predetermined position in the opening direction. The seated person is disposed at a position where the seated person is touched in a forward tilted posture. For this reason, when getting off the vehicle, the seated person opens the door 5 and then naturally raises the upper body to the outside of the vehicle and operates the operation switch 57 in a forward leaning posture. Then, when the seated person operates the operation switch 57, the cushion lifting mechanism 50 operates, and the movable seat portion M of the seat cushion 40 is raised. That is, the seated person stands up in a forward leaning posture because the buttocks are pushed up by the movable seat portion M in the forward leaning posture. This prevents the seated person from hitting his head against the ceiling portion of the entrance 3.
Further, the operation switch 57 is configured to be turned on only while being operated, and to supply power to the motor 56 only while the operation switch 57 is being turned on. For this reason, the seated person always maintains the forward leaning posture by operating the operation switch 57 while the movable seat portion M is raised. As a result, the seated person's head is less likely to hit the ceiling portion of the entrance 3.
Further, when the door 5 is not rotated to the predetermined position in the opening direction, power is not supplied to the motor 56 even if the operation switch 57 is turned on. For this reason, even if a seated person touches the operation switch 57 accidentally while driving, there is no problem that the movable seat M rises.

<Example of change>
Here, the present invention is not limited to the above-described embodiment, and can be modified without departing from the gist of the present invention. For example, in this embodiment, the cushion raising / lowering mechanism 50 which raises the movable seat part M of the seat cushion 40, and inclines so that the entrance / exit 3 side is low and the indoor side is high is illustrated. However, the seat cushion 40 is horizontally rotated from the forward-facing position so that the entrance / exit 3 side is directed, and the movable seat portion M of the seat cushion 40 is raised and the front side (the entrance / exit 3 side) is inclined so as to be lowered. It is also possible to do.
In the present embodiment, the operation switch 57 is disposed at the position of the armrest 5 a of the door 5. However, the operation switch 57 may be provided near the opening lever of the door 5.
In the present embodiment, the seat cushion 40 includes the movable seat portion M and the fixed seat portion S, and the movable seat portion M is lifted and lowered by the cushion lifting mechanism 50. However, for example, a configuration in which the seat cushion 40 is entirely moved up and down by the cushion lifting mechanism 50 is also possible.
Further, although the cushion elevating mechanism 50 using the cross link 53 is illustrated, a cushion elevating mechanism using a ball screw & nut mechanism, an air cylinder, or the like can be used instead of the cross link 53.
Further, a sensor for detecting the approach of the seated person's head, for example, a photoelectric sensor and a light source, is provided at the ceiling portion of the entrance / exit 3 so that the seated person's head blocks light in the vicinity of the ceiling portion. It is also possible for the cushion lifting mechanism 50 to stop the lift of the movable seat M when detected.
Moreover, although the example in which the vehicle seat 10 is used as the driver's seat and the operation switch 57 is provided in the door 5 on the driver's seat side is shown, the vehicle seat 10 according to the present invention may be applied to a seat other than the driver's seat. Is possible.

3 ... Entrance 5 ... Door 30 ... Seat body 40 ... Seat cushion M ... Moveable seat S ... Fixed seat 50 ... Cushion lifting mechanism 53 ... ..Cross link 56 ... motor 57 ... operation switch LS ... door switch

Claims (3)

A seat cushion and a cushion raising / lowering mechanism configured to raise at least a part of the seat cushion, and when a seated person sitting on the seat cushion gets out of the vehicle, the seat cushion raises the lifting force. A vehicle seat configured to be received,
In a state where the door that is opened when getting off is not opened to a predetermined position, even if an operation switch that operates the drive unit of the cushion lifting mechanism is operated, the drive unit is configured not to operate.
The operation switch is located on the indoor side of the door so that a seated person who has rotated the door to a predetermined position in the opening direction can move the upper body out of the vehicle and operate in a forward leaning posture. A vehicle seat, which is disposed under a door window. The vehicle seat according to claim 1,
The drive unit includes a motor,
The vehicle seat is configured so that the operation switch is turned on only while being operated, and power can be supplied to the motor only while the operation switch is turned on. A vehicle seat according to claim 1 or 2, wherein
The vehicular seat, wherein the cushion raising / lowering mechanism is configured to be lifted in an inclined state so that at least a part of the seat cushion is lower on the vehicle outer side and higher on the indoor side .

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