JP3489375B2 - Leg support structure for seat - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leg support structure for a seat used in vehicles, airplanes, ships, hairdressers, dentists and the like.

[0002]

2. Description of the Related Art As is well known, the above seats for seats have various leg support structures so that when a person sits down, he / she lifts his / her feet for comfort and relaxation. Although not shown, this conventional leg support structure is mounted on the front side of the seat for seat through a parallelogram link in a space on the lower front side of the seat cushion for seat, and a motor for operating the parallelogram link, etc. The driving parts of the above are disposed in a space such as the front surface of the lower end of the seat cushion for the seat.

Further, as another conventional example, there is, for example, Japanese Utility Model Laid-Open No. 1-121454. As shown in FIGS. 5 and 6, the technique disclosed in the publication is supported by a leg support portion 02 and a shaft 04 provided at a front end of the leg support portion 02, and is developed in a front direction of a seat cushion 06 for a seat. And a footrest portion 08 which is slidably supported.

Further, as shown in FIG. 6, a pair of support arms 010 are provided so as to be able to advance and retreat from the front left and right of the seat cushion for seat 06 so as to support the leg support portion 02 on the lower surface of the rear end thereof. The support arm 010 extends from the rear end to the lower rear of the support arm 010, and the front beam 014 of the bottom frame 012 has an arc-shaped guide elongated hole 016.
A guide 018 having a guide 018 is attached, and a shaft provided at the rear end of the supporting arm 010 in the guide long hole 016 of the guide 018 is pivotally supported so that the leg support portion 02 is rotatable in the vertical direction with respect to the front beam 014. It is configured so that the lower limbs of a seated person can be placed on it.

[0005]

However, in the leg support structure with the parallelogram link described as the above-mentioned conventional example, the parallelogram link moves forward and backward from the front surface of the seat cushion for seat 06. , The parallelogram link and the drive mechanism that operates it are exposed, so the appearance is not good.

Further, in the technique described in Japanese Utility Model Laid-Open No. 1-121454, the leg support portion 02 is rotated between the diagonally upper position in the used state and the non-used state in which the leg support portion 02 is housed. Of the supporting arm 010 for supporting the leg support 02 at its tip, and a guide 018 for axially supporting the leg support 02 in a vertical position by sliding the shaft of the rear end of the supporting arm 010 in the arc-shaped guide elongated hole 016. However, since it is attached so as to be exposed to the outside of the seat cushion 06 for a seat, it does not look good.

Further, in order to improve the appearance, even if the front surface of the lower portion of the seat cushion 06 is covered with a cover,
Long slits are required on the cover in accordance with the rotation locus of the supporting arm 010, which also deteriorates the appearance.
Further, the parallelogram link is not good-looking because the driving article for the supporting arm 010 is arranged in the space at the lower end 06 and side end of the seat cushion for a seat.

In addition, like the seat cushion 06 for seats for buses, airplanes, ships, hairdressing and dentists, which has a relatively large space in an automobile, such as between the lower part of the seat couyon 06 and the floor surface, If there is the above-mentioned mounting space, the above-mentioned parallelogram link, the supporting arm 010, the guide 018, and their driving parts can be arranged in the space. For example, a lower part of a rear seat cushion such as a rear seat of a passenger car If there is no space between the floor and the floor, the above-mentioned conventional technique cannot be adopted.

The present invention was devised in view of the above-mentioned problems, and one end thereof is attached to a leg support body on which a seated person's foot is placed, and the other end is pivotally supported in a seat cushion device for a seat. By providing an arc-shaped arm and allowing the arm to move in and out of the seat cushion device for a seat along a substantially circumferential direction of the arc, and by being provided in the seat cushion device for a seat, It is an object of the present invention to provide a leg support structure for a seat, in which a leg support can be arranged even if there is no space below the seat cushion device for a seat, and the seat leg support structure looks good.

[0010]

Therefore, in the leg support structure for a seat according to the present invention as set forth in claim 1, when the leg support main body on which the foot of the seated person is placed is used, the seat cushion device is in a used state in front of the seat cushion device. top when not in use to project at a position
In a leg support structure for a seat which is housed substantially vertically on the front side of a seat cushion device, one end is attached to the leg support body, and the other end side is arcuately rotatably supported in the seat cushion device. Arm of the
And drive means disposed in the seat cushion in the device together with the make extending and retracting along the arm in the circumferential direction of the approximately arc, the arm, along the circumferential direction of the substantially arc
Is rotatably supported by a rotation shaft substantially in the center of the arc.
It is characterized in that there.

[0011] seat leg support structure of the present invention according to claim 2, in the configuration of claim 1, wherein the arc center of the rotation center and the arm of the arm is set so as to substantially coincide the it is with the features. Claim 3
The leg support structure for a seat of the present invention according to claim 1 or 2.
In the structure according to the second aspect, the driving means has the arc-shaped armature.
Racks provided along the circumference of the outer peripheral surface of the arc of the arc.
And a pinion that engages with and drives the rack.
It is characterized by being made. Book according to claim 4
The leg support structure for a seat according to the invention is the one of claims 1 to 3.
In the configuration according to item 1, the arcuate arm is provided.
And the drive means in the console box or
It is characterized in that it is installed in the seat cushion device.
ing. The leg support for a seat according to the present invention according to claim 5.
The structure has the structure according to any one of claims 1 to 4.
And the tip of the arc-shaped arm is
Box or seat cushion device bent along the front side
The arm support supports the leg support body,
The arc-shaped arm is the above console box or sheath.
To be retracted from the hole in the front of the cushion device
It is characterized by being done.

[0012]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a schematic perspective view showing a case where the seat leg support structure of the present invention is applied to a rear seat of a passenger car, and FIG. 2 is a schematic view showing a state in which the driving means of the leg support shown in FIG. 1 is built in and operated in a rear seat cushion device. 3 is a schematic explanatory view in a partially broken state showing a cross section of the front end portion of the rear seat cushion device taken along the line 3A-3A in FIG. 1, and FIG. 4 is a drive for the leg support in FIG. It is a top view which shows a means part.

As shown in FIG. 1, a rear seat (also referred to as a rear seat) 2 of a passenger car seat is composed of a seat cushion device 4 and a seat back 6, and the rear seat 2 has left and right seats A, Although there is one in which B is formed separately from another, in the present embodiment, a bench type rear seat 2 in which the left and right seats A and B are integrally formed will be described.

Further, as shown in FIG. 1, in the seat cushion device 4 described above, the seat cushion frames 5 of the left and right seats A and B are used as a common frame structure. The seat cushion portions 8 and 10 are attached. A console box 12 is provided between the left and right seat cushion portions 8 and 10.
Are mounted on the frame 5.

Next, in order to understand the leg support structure for a seat of the present invention, the schematic view shown in FIG. 2 will be described. As shown in FIG. 2, the drive means 14 of the leg support 16 is provided in the lower portion 12a of the console box 12 disposed on the right side of the left seat cushion portion 10 of the seat cushion device 4 and the inside of the console box 12 is provided. The upper part 12b side is used as a normal console box.

As shown in FIG. 2, one end is attached to the leg rest body 16 and the other end is rotatably supported by a rotating shaft 18 provided in the lower portion 12a of the console box 12. An arc-shaped arm 20 is provided. As shown in FIGS. 1 and 3, the arm 20 penetrates a hole 22 provided on the front surface side of the console box 12 and rotates vertically in the vehicle front-rear direction to extend along the circumferential direction of the arm 20. As shown in FIGS. 1 and 4, the tip of this arm 20 is bent along the vehicle width direction on the lower front side of the left seat cushion portion 10 as shown in FIGS. The leg support body 16a is attached to the bent arm 20S.

That is, as shown in FIGS. 2 and 3, the arm 20 is driven by a motor 30 provided in the console box 12 via a reduction gear 28, which has a pinio 26 meshing with a rack 24 provided on the outer periphery thereof. The leg support body 16a is configured to be pivotable about a pivot shaft 18 so that the arm 20 is retracted from the hole 22 so that the leg support body 16a can be moved up and down.

Next, the leg support structure of the present invention is shown in FIG.
As shown in FIGS. 3 to 3, the bracket 32 is welded and joined 37 on the seat cushion frame 5 disposed in the lower portion 12a of the console box 12 at a position substantially horizontal, and is L-shaped with respect to the bracket 32. Bracket 3
The horizontal portion 34a at one end of 4 is fixed by the bolt 36,
A bearing portion 20d is provided substantially horizontally in the vehicle width direction on a vertical portion 34b at the other end of the L-shaped bracket 34 which stands substantially vertically to the horizontal portion 34a.

Then, as shown in FIG. 3, the bearing portion 20d
The rotary shaft 18 provided at the substantially central portion of the arc of the arm 20
Is rotatably supported, and the tip of this arm 20 penetrates through a hole 22 provided on the front side of the console box 12 so as to be retractable, and the leg support body 16a is attached as described above. Has been.

The driving means 14 for actuating the leg support body 16a has a pinion 26 that meshes with the rack 24 provided on the outer periphery of the arcuate arm 20 as described above, and a reduction gear that meshes with the pinion 26. The motor 30 is connected via 28. Then, as shown in FIG. 3, the motor 30 is mounted on the vertical portion 34 of the bracket 34 with the bolt 36 via the mounting flange 30a protruding downward from the body of the motor 30.
It is fixed to b.

Since this embodiment is constructed as described above, when the switch (not shown) is closed, the motor 30 operates and the speed reducer 28, the pinion 26, and the rack 2 are operated.
4, the arm 20 is rotated about the rotation shaft 18,
The arm 20 shown by the solid line in FIG.
The hole 22 on the front surface of 2 can be advanced upward in the forward direction and can be rotated to the position indicated by the chain double-dashed line.

At this time, the leg support 16 has a structure shown in FIGS.
As shown in FIG. 4, the tip of the arm 20 is bent in an L shape along the front side of the left seat cushion portion 10 and the arm portion 20 is bent.
Since it is supported cantilevered by S, even if the leg support body 16a is in use, one arm portion 20
1 to the side surface 1 of the leg support body 16 from the hole 22 of the console box 12 as shown in FIGS.
Only the arm 20 of the extremely short part 20a up to 6s can be seen from the outside, so that the appearance is extremely good, and the seat cushions 8 and 10 can be arranged without a space at the lower front side.

Further, since the leg support main body 16a is located below the seat cushion device 4 during storage, there is no obstruction. Further, in the above embodiment, the leg support body 1
6a was cantilevered, but as shown by the chain double-dashed line in FIG. 4, a mechanism of the arm 20T similar to that provided in the console box 12 is provided at the left end of the seat cushion portion 10 of the cushion device 4. It is also possible to provide it in the inside of the to form a support mechanism having both ends.

That is, as shown by the chain double-dashed line in FIG. 4, the rotary shaft 18 supported by the bearing portion 20d provided on the vertical portion 34b of the bracket 34 is extended to form an arcuate arm 20.
If fitted to T, the above-mentioned one motor 30, pinion 2
6. Since the arm 20T can be easily rotated without the rack 24, the arms 20 and 20T may be supported by both ends.

Further, in the above embodiment, the seat cushion device 4 in which the left and right seat cushion portions 8 and 10 of the rear seat and the console box 12 are integrally formed has been described, but the present invention is not limited to this.
If the present invention is applied to both a separate type and a front seat, the same effects as the above can be obtained.

Further, since the arm 20 moves in and out in the circumferential direction, the hole 22 of the console box 12 is formed in the arm 20.
Since it only needs to be slightly larger than the width and height of, it is small and looks good. In the case of a bench type seat without the console box 12, the left and right seat action parts 8,
In the sheet couillon device 4 in the central portion connecting 10
The mechanism of the arcuate arm 20 may be provided.

The drive means 14 is a pinion 26,
Although the gear transmission mechanism of the rack 24 is used, even if the rotation shaft 18 of the arm 20 is directly rotated by the motor 30, the same operational effect as that of the above embodiment can be obtained.

[0028]

As described in detail above, according to the seat leg support structure of the present invention as set forth in claim 1, the seat leg support structure of the present invention as set forth in claim 1 mounts the foot of a seated person. The leg support body to be placed is projected to the position of the used state in front of the seat cushion device when in use
In a leg support structure for a seat which is housed substantially vertically on the front side of the seat cushion device, one end is attached to the leg support body, and the other end is an arc shape pivotally supported in the seat cushion device. It comprises an arm of a drive <br/> motion means which is disposed in the seat cushion in the device together with the make extending and retracting along the arm in the circumferential direction of the approximately arc, the arms, the substantially arc Circumferential direction
Rotatably along the rotation axis of the arc.
Therefore, the leg support body is supported by the arm that moves forward and backward from the hole on the front side of the seat cushion device, and even when the leg support body is in use,
Since the arm substantially extends from the cushion device and only a part of the arm that is extremely short to the side surface of the leg support body is visible, the appearance is very good and there is no space in the lower front portion of the seat cushion device. Can be installed. Also, the axis of the arc-shaped arm
It is provided in the receiving part at the approximate center of the arc of the arc-shaped arm.
The pivot shaft is rotatably supported and the arc-shaped arm
The front end of the console is a hole provided on the front side of the console box.
It is arranged so that it can pass through the
The leg support with the leg support body attached
The operation of the main body of the boot can be performed smoothly. Also, above
Since the arcuate arm moves in and out in the circumferential direction,
The holes in the console box depend on the width and height of the arms.
Small size is good because it only needs to be slightly larger.
Yes. Bench type seat without the console box
In the case of, the central part that connects the left and right seatction parts
Minute, in the sheet couillon device,
You may make it provide the mechanism of a system.

According to the seat for the leg support structure of the present invention described in claim 2, in the structure according to claim 1, is set as the center of the arc of the rotation center and the arm of the arm substantially coincide As it moves, it rotates up and down at a position close to the rotary hinge of the knee, which gives a good fit for lifting the foot. Further, since the position of the leg support main body is below the seat cushion device during storage, it does not interfere. In addition, the bearing portion of the arc-shaped arm has the above-mentioned arc-shaped
The rotation shaft provided in the approximate center of the arc of the arm is rotatable
The tip of this arc-shaped arm is pivotally supported by
It can pass through the hole provided on the front side of the box
The leg support is installed as described above.
Of the above-mentioned leg support body to which the seat body is attached
The operation can be performed smoothly. Main claim according to claim 3
According to the Ming seat leg support structure, claim 1 or
In the structure according to the second aspect, the driving means has the arc-shaped armature.
Racks provided along the circumference of the outer peripheral surface of the arc of the arc.
And a pinion that engages with and drives the rack.
Since it is made, operate the above leg support body
The drive means is, as described above, of the arcuate arm.
The pinion that meshes with the rack provided on the outer periphery and this pin
Motor connected via a reducer that meshes with the union
(The above-mentioned drive means). And
The above-mentioned motor is projected downward from the main body of the above-mentioned motor.
Bracket with a bolt through the mounting flange.
It is fixed to the straight part. For the seat of the present invention according to claim 4.
The leg support structure according to any one of claims 1 to 3.
In the structure according to item 1, the arcuate arm and
The drive means is in the console box or the seat
Since it is installed in the projection device, the arc-shaped
The upper frame engages with the rack provided on its outer periphery.
Pinion is the above console box via the reducer
The motor provided inside or inside the seat cushion device
Is rotated around the above rotation axis by
Move the arcuate arm out of the hole and move the leg support
The main body of the chair can be moved up and down. Claim 5
According to the leg support structure for a seat of the present invention of claim 1,
In the configuration according to any one of 1 to 4, the arc shape is
The end of the arm of the console box or seat above
A curved arm along the front of the cushioning device
The leg support body is supported and the arc-shaped arm
Is the above console box or seat cushion device
It is configured to move in and out of the hole on the front of
And the leg support is the tip of the arcuate arm.
Bends in an L shape along the front side of the left seat cushion device.
It is supported cantilevered by the arc-shaped arms that have been folded,
Even if the above leg support body is in use,
The arcuate arm is substantially the console box.
Through the hole in the seat or the seat cushion device.
The short circle above the side of the main body
The arc-shaped arm is invisible, so it looks great.
And the seat cushion on the lower front side of the seat cushion device.
It can be installed without a pace.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention and is a schematic perspective view showing a case where the leg support structure for a seat of the present invention is applied to a rear seat of a passenger car.

FIG. 2 is an explanatory diagram schematically showing a state in which the driving means of the leg support shown in FIG. 1 is built in and operated in a rear seat cushion device.

FIG. 3 is a schematic explanatory diagram showing a cross section of the front end portion of the rear seat cushion device taken along the line 3A-3A in FIG. 1 in a partially broken state.

FIG. 4 is a plan view showing a driving means portion of the leg support of FIG.

FIG. 5 is a schematic side view showing a partially broken state of a conventional seat leg rest.

FIG. 6 is a schematic front view showing the surface of the leg rest portion of FIG.

[Explanation of symbols]

2 Rear sheet 4 Seat cushion device 5 seat cushion frame 6 seat back 8, 10 Seat cushion part 12 console boxes 14 Drive means 16 leg support 16a Leg support body 18 rotation axis 20,20T arm 24 racks 26 pinion 28 reducer 30 motor 32 bracket 34 L-shaped bracket 34b Vertical part of L-shaped bracket

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B60N 3/06 A47C 7/50

Claims (5)

(57) [Claims] 1. A leg seat for housing substantially perpendicular to the front of the seated person in the seat cushion device when not in use to project at a position in front of the state of use of the seat cushion device in use the leg support body for mounting a foot In the support structure, one end is attached to the leg support body , the other
An arcuate arm whose end side is rotatably supported in the seat cushion device, and an arm which is extended and retracted along the circumferential direction of the substantially arc and is disposed in the seat cushion device. The driving means , the arm is rotatable along the circumferential direction of the substantially circular arc.
Characterized in that it is pivotally supported by a rotation shaft substantially at the center of
Seat leg support structure. Wherein the center of rotation of the arm and the circle of the arm
Wherein the center of the arc is set to be substantially coincident, seat leg support structure of claim 1, wherein. 3. The drive means is a circle of the arcuate arm.
The rack provided along the circumferential direction of the outer peripheral surface of the arc and the above
Consists of a pinion that engages and drives a rack
The seat rack according to claim 1 or 2, characterized in that
Support structure. 4. The arcuate arm and the drive means.
In the console box or above seat cushion device
It is arranged inside.
The leg support structure for a seat according to any one of items. 5. The arc-shaped arm tip is the conso
Along the front side of the seat box or seat cushion device
The leg support by the bent arc-shaped arm
The main body is supported, and the arc-shaped arm is
The hole on the front of the seat box or seat cushion device.
Billing, characterized in that it is arranged to leave
The leg support for a seat according to any one of Items 1 to 4.
Construction.