JP2000201773A - Electric ottoman device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve safety of a seat by composing the ottoman device equipped on the front end side of a seat cushion by a simple mechanism and covering a space generated at the foot rest position. SOLUTION: An ottoman device 4 constituted of a forward developable ottoman main body 10 and an auxiliary unit (sliding body) 11 forward/rearward movably equipped thereon is housed in almost vertical condition in a housing recess part 2a formed on the front end part of a seat cushion 2. The ottoman main body 10 is held so that the inclination angle is made in an almost horizontal condition being moved forward by a first link mechanism 9 and a second link mechanism 26 is equipped in between a nut 23 to be screwed with a screw shaft 22 and the auxiliary unit 11. A protective sheet 30 is place in between the ottoman main body 10 and the seat cushion 2. A space above rotary links 9A and 9B is covered by the protective sheet 30 in a condition the ottoman main body 10 is on the foot rest.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric ottoman device in which an ottoman is provided at the front of a seat cushion so as to be deployable forward, and the ottoman is moved between a footrest position and a storage position by a deployment mechanism.

[0002]

2. Description of the Related Art As a conventional electric ottoman device, there is one described in, for example, Japanese Patent Application Laid-Open No. 9-206157. In this conventional example, a movable mechanism of a slider disposed to extend in the front-rear direction is moved back and forth by an electric drive mechanism to operate a link mechanism composed of six link arms formed in a flat plate shape. There is described an apparatus for changing the posture of a footrest of a chair in which the posture of the footrest can be changed between a storage posture and a footrest posture.

[0003]

However, in the above-described conventional posture changing device, the posture of the footrest, that is, the ottoman, can be changed between the storage posture and the footrest posture by the electric drive mechanism. Since the link mechanism that connects the footrest and the slider is configured by combining six flat link arms, when the ottoman is in the footrest posture, the link between the ottoman and the seat cushion is made. A space is created, and the link mechanism is exposed in this space, and there is an unsolved problem that the appearance is poor.

In order to solve this unresolved problem, it is conceivable to provide a bellows for covering the link mechanism. However, providing such a bellows increases the cost and makes it easy to mount the bellows. Therefore, there is a new problem that the assembling work cannot be easily performed.

[0005] The object of the present invention is to pay attention to the unsolved problems of the conventional example, and by disposing a protective sheet between the ottoman body and the seat cushion, it is possible to cover the deployment mechanism. An object of the present invention is to provide an electric ottoman device having an improved appearance, a simple configuration, easy assembly work, and excellent safety and economy.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an electric ottoman device according to a first aspect of the present invention has an ottoman expandably connected to a front portion of a seat cushion. The ottoman is deployed from the storage position stored in the storage recess formed in the front part of the seat cushion to the foot mounting position in the electric ottoman device in which the ottoman is deployed between the foot rest position and the storage position by the electric drive mechanism. The ottoman itself,
A deployment mechanism having an electric motor for moving the ottoman body between the storage position and the foot rest position, and a protection sheet for covering the deployment mechanism provided between the ottoman body and the seat cushion. Features.

In the electric ottoman device according to the first aspect, since the protection sheet is provided between the ottoman body and the seat cushion, the protection mechanism is provided when the ottoman body is deployed from the storage position to the foot rest position by the deployment mechanism. Since the deployment mechanism is covered with the sheet, the insertion of the hand or the finger can be reliably prevented with a simple configuration, and the appearance can be improved.

According to a second aspect of the present invention, in the electric ottoman device according to the first aspect, the protection sheet is a resin cover attached to a frame of the ottoman body, and one end is connected to the resin cover. And the other end is constituted by a cushion trim of the seat cushion and a trim material fixed integrally.

In the invention according to the second aspect, one end of the trim member can be easily attached to the ottoman body by the resin cover, and the other end is fixed integrally with the cushion trim. Installation can be performed easily.

Further, the electric ottoman device according to a third aspect is characterized in that, in the invention of the second aspect, the trim member is formed by sewing a resin plate at a resin cover side end.

According to the third aspect of the present invention, since the resin plate is sewn to the end of the trim material on the side of the resin cover, the trim plate can be easily fixed to the resin cover.

Furthermore, an electric ottoman device according to a fourth aspect of the present invention is the electric ottoman device according to any one of the first to third aspects, wherein the ottoman main body has a sliding body disposed so as to be able to advance and retreat. A linear moving mechanism having a moving member that moves in the vehicle front-rear direction by an electric motor, a first link mechanism that expands the ottoman body from a storage position to a foot rest position, and a linear moving mechanism that is connected to the moving member of the linear moving mechanism. A second link mechanism is provided for expanding the ottoman main body from the storage position to the foot rest position side and for projecting the sliding body forward from the ottoman main body.

In the electric ottoman device according to the fourth aspect, a sliding member is slidably provided on the ottoman main body, and when the sliding member contracts toward the ottoman main body at the storage position, the sliding member is moved toward the front end side of the seat cushion. It can be securely stored in the storage recess provided, and it is possible to secure a wide foot space for the occupant. From this state, the ottoman main body is expanded to the footrest position by the link member, so that the sliding body becomes the ottoman main body. It projects more forward,
The front space can be enlarged by the size of the storage recess, and a wide footrest width can be secured.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic perspective view showing an embodiment of the present invention, and FIG. 2 is a side view of FIG. 1, where 1 is a seat for a passenger seat of a vehicle, for example, shown on a seat cushion 2 and a rear end side thereof. A seat back 3 that can be tilted by a reclining mechanism that does not work, and an ottoman 4 that is rotatably disposed between a storage position stored in a storage recess 2 a formed in a front end portion of the seat cushion 2 and a footrest position. And

The seat cushion 2 has a cushion frame 5 disposed inside the seat cushion 2 supported on a pair of left and right seat slides 6 disposed on the floor of the vehicle body and extending in the front-rear direction so as to be adjustable in height. Have been.

As shown in FIG. 3, the ottoman 4 has a first support arm 8 which is fixed to the left and right ends of the front end of the cushion frame 5 so as to project forward and downward, respectively, and which is inclined at about 30 ° with respect to a horizontal plane. The ottoman body 10 is supported by the ottoman body 10 so as to be freely deployable via the link mechanism 9, and an auxiliary unit 11 as a sliding body is provided on the ottoman body 10 so as to be movable forward and backward.

The first link mechanism 9 has a distal end which is substantially inwardly perpendicular to the support arm 8 which is rotatably supported by the left and right support arms 8 at predetermined intervals. And a pair of rotating links 9A and 9B having different lengths formed in a V-shape by being bent into a rectangular shape.
And 9B are rotatably connected to a support arm 13 attached to the left and right rear ends of a U-shaped support frame 12 having an open front end disposed in the ottoman body 10.

Here, as shown in FIG. 4, the connection relationship between the rotating links 9A and 9B is such that the ottoman body 10 is stored in the storing recess 2a of the seat cushion 2 and the rotating links 9A and 9B are connected. Is close to, for example, about 70 ° with respect to a horizontal plane, and a straight line connecting the connecting points to the support arm 13 becomes an acute angle almost nearly parallel to a straight line connecting the connecting points to the support arm 8, and The distance between the connecting points of the arms 8 is
The distance between the connection points is selected to be short, whereby the ottoman body 10 is maintained in a state of being inclined by about 70 ° with respect to the horizontal line.

When the ottoman body 10 is unfolded forward from the storage position, the rotation of the rotating arms 9A and 9B in the clockwise direction gradually separates them, so that the ottoman body 10 gradually tilts. Is gradually reduced to a state close to a horizontal state, and the rotating links 9A and 9
The ottoman body 10 and the support arm 8 are substantially parallel to each other with the bases of B being substantially perpendicular to the support arm 8.

FIG. 4 shows the rotating arms 9A and 9B.
As shown in FIG. 5, when the ottoman body 10 is unfolded forward from the storage position to be in the foot rest position, a flexible synthetic resin material covering a space created between the two rotating arms 9A and 9B. A pair of covers 15A and 1 formed of
5B is mounted.

The covers 15A and 15B are arranged so that they do not interfere with each other when the rotating arms 9A and 9B rotate, and their free ends are deployed to the position where the ottoman body 10 is placed on the foot as shown in FIG. And a predetermined length, so as to completely cover the space formed between the rotating links 9A and 9B.

Further, the auxiliary unit 11 has a rear end slidably held in a left and right rod portion 12a of a U-shaped support frame 12 having an open front end disposed inside the ottoman body 10. And a connecting rod 14b made of an angle member connecting the open ends of the U-shaped pipe 14a, and has a sliding frame 14 formed in a square frame shape. The sliding frame 14 receives a calf of a seated person. The foot rest cushion 14C is mounted.

On the other hand, a support bracket 15 is attached to the front surface of the above-described cushion frame 5 on the lower surface of the central portion in the vehicle width direction, and the support bracket 15 extends downward and backward and has a reverse U-shaped cross section. Is disposed, and a linear moving mechanism 17 is disposed in the case body 16.

This linear movement mechanism 17 has a gear unit 19 pivotally mounted on the rear end side of the case body 16 for reducing the rotational driving force of the electric motor 18, and has an output rotary shaft 20 protruding from the front end thereof. The other end of the double screw shaft 22 whose front end is rotatably supported by the front end of the case body 16 is connected. A nut 23 as a mover is screwed to the double screw shaft 22.

A second link mechanism 25 for moving the ottoman body 10 and the auxiliary unit 11 is connected to the nut 23. This second link mechanism 25
Has a forward extending main link 26 which is rotatably mounted in a vertical plane to the nut 23.

The distal end of the main link 26 is rotatably disposed on the connecting rod 14b of the sliding frame 14 of the auxiliary unit 11 and the sliding frame 14 is in a state where the ottoman body 10 is in the retracted position. It is rotatably connected to a free end of a parallel rotating link 27.

A support bracket 28 projecting from the lower end of the support frame 12 of the ottoman body 10 at a position slightly rearward from the distal end of the main link 26 by a predetermined distance is rotatably connected. Here, the linear moving mechanism 17, the first link mechanism 9, and the second link mechanism 2
5, a deployment mechanism is configured.

Further, a protection sheet 30 is provided between the seat cushion 2 and the support frame 12 of the ottoman body 10. The protective sheet 30 has a rectangular trim member 31. One end of the trim member 31 is a cushion trim 2b of the cushion sheet 2 as shown in an enlarged view in FIG.
With the J-shaped hook 32,
The cushion trim 2 is attached to a locking piece 33a formed on a folded portion 33 formed on the front end side of the cushion frame 5.
b and the trim member 31 are folded back in a U-shape, so that the cushion trim 2b and the trim member 31 constantly apply tension to the locking piece 33a side with respect to the J-shaped hook 32, and The hook 32 and the locking piece 33a are configured to maintain the locked state.

On the other hand, at the other end of the trim member 31, as shown in FIG. 7, a synthetic resin plate 34 having a flexible upper surface is sewn at the center in the front-rear direction. A total of three positioning holes 35 are formed through the trim material 31 at the center and right and left positions, and a through hole 36 is formed between the positioning holes 35.

As shown in FIG. 3, a synthetic resin cover 37 is fixed to the support frame 12 of the ottoman body 10 by screws 37a. As shown in FIG. 7, the synthetic resin cover 37 has left and right side plates 37L, 37L.
An L-shaped hook 38 is integrally formed on the inner peripheral surface of the R when viewed from a plane opening the rear end side, and the above-mentioned synthetic resin plate 34 is formed on the lower surface of the upper surface plate 37U as shown in FIG. A temporary holding boss 39 for positioning and preventing displacement corresponding to the positioning hole 35 and a clearance forming boss 40 corresponding to the through hole 36 are formed to protrude downward.

On the inner peripheral surface of the synthetic resin cover 37, the trim material 31 fixes the synthetic resin plate 34 to the synthetic resin cover 37.
8 and 9, the L-shaped hook 38 is inserted into the gap between the synthetic resin plate 34 and the trim material 31, and the positioning holes 35 and The temporary holding boss 39 and the clearance forming boss 40 are inserted into the through holes 36 so as to be inserted, and in this state, the temporary holding boss 39 of the synthetic resin cover 37 is formed on the support frame 12 of the ottoman body 10. The protective sheet 30 is disposed between the seat cushion 2 and the ottoman main body 10 by inserting the synthetic resin cover 37 into the support frame 12 with the screws 37a in a temporarily fixed state by being inserted into the holes 41. The space on the upper surface side of the first link mechanism 9 constituting the deployment mechanism is covered by the protection sheet 30.

Next, the operation of the above embodiment will be described.
Now, as shown in FIG. 4, a nut 23 is screwed on the base side of the double screw shaft 22, and in this state, the ottoman body 10 is inserted into the storage recess 2 a of the seat cushion 2 via the main link 26. It is assumed that the seat cushion 2 is held at a storage position substantially along the front end of the seat cushion 2 inclined about 70 ° with respect to the horizontal line.

In this state, the auxiliary unit 11 is configured such that the sliding frame 14 is connected to the support frame 12 of the ottoman body 10.
The auxiliary unit 11 and the ottoman main body 10 are brought into close contact with each other, and the footrest cushion portion 14C of the auxiliary unit 11 covers the entire upper portion of the ottoman main body 10, and the width between both becomes the shortest width. , The height of the auxiliary unit 1 becomes less than the minimum height of the seat cushion 2.
The lower end of 1 is separated from the floor surface.

As shown in FIG. 4, the covers 15A and 15B mounted on the rotating links 9A and 9B overlap without interfering with each other. In this stored state, for example, by driving the electric motor 18 forward,
When the output rotation shaft 20 of the gear unit 19 is rotated clockwise, for example, and the double screw shaft 22 is rotated clockwise, the nut 23 is moved forward accordingly.

As a result, the rotating links 9A and 9B are rotated clockwise, whereby the support arm 1 is rotated.
The inclination angle of the straight line connecting the connecting points of the rotating links 9A and 9B in 2 gradually goes to the horizontal direction, and accordingly the ottoman body 10 also gradually goes to the horizontal state while being pushed forward.

When the inclination angle of the ottoman main body 10 gradually moves in the horizontal direction, the angle between the main link 26 and the support bracket 28 of the ottoman main body 10 gradually increases. The auxiliary unit 11 is gradually slid forward and the ottoman body 1
The overall width of the ottoman 4 including the zeros and the auxiliary unit 11 is increased.

As shown in FIG. 5, when the nut 23 advances to the front end side of the double screw shaft 22, the advanced position is detected by a position sensor such as a limit switch (not shown). Is stopped, the rotation of the double screw shaft 22 by the gear unit 19 is stopped, the forward deployment of the ottoman 4 is stopped, and the ottoman 4 is stopped at a predetermined footrest position.

At this time, as shown in FIG. 5, the auxiliary unit 11 largely projects forward from the ottoman main body 10, and the calf of the occupant can be supported by the foot rest cushion portion 14C, so that the occupant can relax. You can take a posture.

In this foot rest position, the space between the rear end side of the support frame 12 of the ottoman main body 10 and the front end of the seat cushion 2 is covered with the protective sheet 30. It is possible to reliably prevent a hand or a finger from being inserted into the space created in the above, and to improve the appearance by covering the first link mechanism 9 constituting the deployment mechanism.

Further, the rotating links 9A and 9B are substantially in a parallel state, and a space is created between them. This space is formed by the cover 15 mounted on the rotating links 9A and 9B.
A and 15B completely cover and can reliably prevent insertion of a hand or finger into the space between the rotating links 9A and 9B.

To return from the foot rest position to the stowed position, the electric motor 18 is driven in the reverse direction to rotate the gear unit 1.
9 by rotating the output rotation shaft 20 in the counterclockwise direction, the nut 23 retreats, and the main link 26 connected to the nut 23 retreats, whereby the ottoman body 10 is moved from the foot rest position in FIG. While moving backward while the inclination angle gradually increases, the sliding frame 14 of the auxiliary unit 11
2 is gradually inserted into the auxiliary unit 11.
Moves to the ottoman body 10 side.

Thereafter, when the nut 23 reaches the storage position shown in FIG. 4, this is detected by a position detection sensor (not shown), the energization of the electric motor 18 is stopped, the rotation thereof is stopped, and the gear is accordingly stopped. When the rotation of the output rotation shaft 20 of the unit 19 is stopped, the rotation of the double screw shaft 22 is also stopped, the retraction of the nut 23 is stopped, and the ottoman 4 is moved while the auxiliary unit 11 is in contact with the ottoman body 10. The seat is stopped at the storage position stored in the storage recess 2a of the seat cushion 2.

As described above, according to the above-described embodiment, by rotating the double screw shaft 22 to move the nut 23 forward and backward, the forward movement of the ottoman body 10 and the forward movement of the auxiliary unit 11 can be achieved. Can be performed, and the rotation of the ottoman 4 and the width expansion can be performed simultaneously with a simple link mechanism. Moreover, since the ottoman 4 is stored in the storage recess 2a formed in the seat cushion 2 at the storage position, it is possible to prevent the free space at the foot of the occupant from becoming narrow.

Further, since the ottoman body 10 is supported by the first link mechanism 9 having the pair of rotating links 9A and 9B, the ottoman body 10 is pushed forward when the ottoman body 10 is unfolded forward from the storage position. Since the tilt angle is gradually reduced while the ottoman body 10 is rotatably supported at one point, the amount of forward projection can be increased.

Further, since the protective sheet 30 is provided between the seat cushion 2 and the ottoman body 10, the first link mechanism constituting the deployment mechanism when the ottoman body 10 is deployed to the front foot rest position. 9 can be reliably covered, and the insertion of hands and fingers can be reliably prevented.
The appearance can be improved.

Further, one end of the trim material 31 of the protective sheet 30 is sewn to the cushion trim 2b of the seat cushion 2, and the other end is easily attached to the synthetic resin cover 37 by the synthetic resin plate 34. By temporarily inserting the temporary holding boss 39 into the through hole 41 of the support frame 12 of the ottoman body 10, the protective sheet 30 can be easily temporarily fixed, and then the synthetic resin cover 37 is screwed to the support frame 12. By fixing at 37a, the work of attaching the protection sheet 30 can be easily performed.

Furthermore, covers 15A and 15B are attached to the pivot links 9A and 9B, respectively, so that when the ottoman body 10 is deployed to the front foot rest position, it is formed between the pivot links 9A and 9B. By completely covering the space, the insertion of a hand or finger can be reliably prevented.

In the above-described embodiment, the case where the trim member 31 of the protective sheet 30 is attached to the support frame 12 of the ottoman body 10 via the synthetic resin cover 37 has been described. However, the present invention is not limited to this. ,
The synthetic resin cover 37 may be omitted, and the leading end of the trim member 31 may be directly fixed to the support frame 12 by bonding or welding. In the above embodiment,
Although the case where the rotating links 9A and 9B are formed in a U-shape has been described, the present invention is not limited to this.
As long as the parallel link is formed, it can be formed in any shape.

Further, in the above-described embodiment, the case where the footrest cushion 14C is formed on the auxiliary unit 11 has been described. However, the present invention is not limited to this, and both the ottoman body 10 and the auxiliary unit 11 may be used. You may make it mount | wear a footrest and a cushion.

Further, in the above-described embodiment, the case where the double screw shaft 22 is applied as the linear moving mechanism has been described. However, the present invention is not limited to this, and a single screw shaft or a triple screw shaft is applied. It is also possible to apply a ball screw instead of the screw shaft.

[0051]

As described above, according to the electric ottoman device of the first aspect, since the protective sheet is provided between the ottoman main body and the seat cushion, the ottoman main body is moved from the storage position to the foot by the deployment mechanism. When deployed at the mounting position, the deployment mechanism is covered by the protective sheet, and it is possible to reliably prevent hand or finger insertion with a simple configuration and improve the appearance.

According to the electric ottoman device of the present invention, the protective sheet is made of a resin cover mounted on the frame of the ottoman body, one end of which is locked by the resin cover, and the other end of which is a seat cushion. It is composed of the cushion trim and the trim material fixed integrally,
One end of the trim member can be easily attached to the ottoman body by the resin cover, and the other end is fixed integrally with the cushion trim, so that the trim member can be easily attached to the cushion frame.

Furthermore, according to the electric ottoman device of the third aspect, the resin plate is sewn to the end of the trim material on the side of the resin cover, so that the resin plate can be easily fixed to the resin cover. Is what you can do.

Further, according to the electric ottoman device according to the fourth aspect, the sliding member is slidably provided on the ottoman main body, and this sliding body contracts toward the ottoman main body side in the storage position, thereby providing a seat cushion. It can be securely stored in the storage recess provided on the front end side, and it is possible to secure a wide foot space for the occupant. From this state, the ottoman main body is expanded to the footrest position by the link member, so that the sliding member is provided. Protrudes forward from the ottoman body, but the front space can be expanded by the size of the storage recess,
A wide footrest width can be secured.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a schematic configuration of an embodiment of an electric ottoman device according to the present invention.

FIG. 2 is a right side view of FIG.

FIG. 3 is an exploded perspective view showing the frame configuration of FIG. 1;

FIG. 4 is a cross-sectional view of the electric ottoman device according to the present invention in a state where the ottoman is in a storage position.

FIG. 5 is a cross-sectional view of the electric ottoman device according to the present invention in a state where the ottoman is at a footrest position.

FIG. 6 is an enlarged sectional view showing a state in which the protective sheet is attached to a seat cushion.

FIG. 7 is an exploded perspective view when a protective sheet is attached to the ottoman body.

FIG. 8 is a sectional view showing a state in which the protective sheet is attached to the ottoman body.

FIG. 9 is an explanatory diagram showing a state in which the protective sheet is attached to a synthetic resin cover.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seat 2 Seat cushion 2b Cushion trim 3 Seat back 4 Ottoman 8 Support arm 9 1st link mechanism 9A Rotating link 9B Rotating link 10 Ottoman main body 11 Auxiliary unit (sliding body) 12 Support frame 14 Sliding frame 17 Linear movement Mechanism 18 Electric motor 19 Gear unit 22 Double screw shaft 23 Nut 25 Second link mechanism 26 Main link 30 Protection sheet 31 Trim material 34 Synthetic resin plate 37 Synthetic resin cover

Claims (4)

[Claims] 1. An electric ottoman device in which an ottoman is expandably connected to a front portion of a seat cushion, and the ottoman is expanded between a footrest position and a storage position by an electric drive mechanism. A deployment mechanism having an ottoman body that is deployed from a storage position stored in a storage recess formed at a front portion of the ottoman body to a foot placement position, an electric motor that moves the ottoman body between the storage position and the foot placement position, An electric ottoman device comprising: an ottoman body; and a protective sheet disposed between the seat cushion and covering the deployment mechanism. 2. The protective sheet according to claim 1, wherein the protective sheet includes a resin cover mounted on a frame of the ottoman body, and a trim fixed at one end to the resin cover and the other end integrally fixed to a cushion trim of a seat cushion. The electric ottoman device according to claim 1, wherein the electric ottoman device is made of a material. 3. The electric ottoman device according to claim 2, wherein a resin plate is sewn to an end of the trim member on a resin cover side. 4. The ottoman main body has a sliding body disposed so as to be able to advance and retreat, and the deploying mechanism houses a linear moving mechanism having a moving element that moves in a vehicle front-rear direction by an electric motor, and the ottoman main body. A first link mechanism that expands from a position to a footrest position; and a first link mechanism that is connected to a mover of the linear movement mechanism to expand the ottoman body from the storage position to the footrest position side, and to move the slide body forward from the ottoman body. The electric ottoman device according to any one of claims 1 to 3, further comprising a second link mechanism projecting to the side.