JP2001292857A - Motor-driven ottoman device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make an ottoman provided on the front end side of a seat cushion into the unit of a simple mechanism independent of a seat and to make components shared by cars regardless of a car kind. SOLUTION: Inside a housing recessed part 2a formed at the front end part of the seat cushion 2, an ottoman main body 10 unfoldable forwards is housed in an almost vertical state. To an attaching member 6o for the ottoman formed on a seat sliding mechanism 6, a linear driving mechanism 22 for constituting an unfolding mechanism and a supporting arm 8 for supporting a supporting frame 12 for slidably supporting the sliding frame 14 of the ottoman main body 10 are attached. The ottoman main body 10 is held so as to turn an inclination angle to an almost horizontal state while being moved forwards by a first linking mechanism 9 at the time of being unfolded, and a second linking mechanism 28 is disposed between a nut 27 screwed to a screw shaft 26 and the sliding frame 14.

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 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 connecting the footrest and the slider is configured by combining six flat link arms, there is an unsolved problem that the configuration is complicated.

For this reason, the ottoman body is supported by a link attached to the seat cushion frame so as to be deployable between a footrest position and a storage position, and the ottoman body is deployed by a deployment mechanism provided on a seat slide. Therefore, it has been considered that the ottoman body is expanded with a simple configuration to achieve a simple configuration.

According to this configuration, the electric ottoman device can have a simple configuration, but since the link for deploying the ottoman body is attached to the seat cushion frame, the rigidity of the seat cushion frame is ensured. For this reason, there is an unsolved problem that the weight increases and it cannot be applied to a configuration including a sheet lifter.

Further, since the seat cushion frame differs for each vehicle type, it is necessary to design a different mounting member for each vehicle type, and the assembling property and the trimming process are different, so that it is possible to meet the demand for the common use of parts. There is an unsolved problem that cannot be solved.

SUMMARY OF THE INVENTION An object of the present invention is to focus on the unsolved problems of the prior art, and the entire electric ottoman device is supported by supporting, on a seat slide side, a link that supports the ottoman body so as to be deployable. The present invention provides an electric ottoman device that can be unitized separately from a seat cushion frame.

[0008]

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,
It is characterized by comprising a deployment mechanism having an electric motor for moving the ottoman body between the storage position and the foot placement position, and a seat slide mechanism for supporting the deployment mechanism.

In the electric ottoman device according to the first aspect, the electric ottoman device is separated from the seat cushion frame to be an independent unit by supporting the deployment mechanism for deploying the ottoman body by the seat slide mechanism. Even if the seat cushion frame is different for each vehicle type, the design is not affected.

According to a second aspect of the present invention, in the electric ottoman apparatus according to the first aspect, the seat slide mechanism includes a pair of left and right fixed guide rails and a pair of slides guided by the both fixed guide rails to slide. And a mounting member for supporting the deployment mechanism is provided between the slide rails.

According to the second aspect of the present invention, since the mounting member is provided between the slide rails guided by the fixed guide rails and the deployment member is supported by the mounting member, the seat is slid by the seat slide mechanism. When this happens, the electric ottoman device also slides, and it is possible to prevent the positional relationship between the two from shifting.

Further, in the electric ottoman device according to a third aspect, in the invention according to the first or second aspect, the ottoman main body has a sliding body arranged to be able to move forward and backward, and the deployment mechanism is operated by an electric motor. A linear moving mechanism supported by the mounting member, and a support bracket mounted on the mounting member for expanding the ottoman body from a storage position to a footrest position; A first link mechanism supported by the linear movement mechanism, the ottoman body being connected to the moving element to expand the ottoman body from the storage position to the foot rest position side, and the sliding body is protruded forward from the ottoman body. 2
And a link mechanism.

According to the third aspect of the present invention, the electric ottoman body is formed by supporting the linear moving mechanism and the first link mechanism on the mounting member and providing the second link mechanism on the moving element of the linear moving mechanism. The unit can be reliably formed.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 6 show an embodiment of an electric ottoman device according to the present invention.
1 is a schematic perspective view showing an embodiment of the present invention, and FIG. 2 is a side view of FIG. 1, wherein 1 is a passenger seat of a vehicle, and is not shown, for example, on a seat cushion 2 and a rear end side thereof. The seat back 3 is tiltable by a reclining mechanism, and 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 foot mounting position shown by a dashed line. Ottoman 4.

Here, as shown in FIG. 4, the seat cushion 2 has a cushion frame 5 disposed therein.
Are supported on a pair of left and right seat slide mechanisms 6 disposed on the floor of the vehicle body so as to be adjustable in height. Reference numeral 2b is a pad material, and 2c is a skin material. As shown in FIG. 3, mounting portions 5a and 5b are formed at front and rear positions of the cushion frame 5.

The seat slide mechanism 6 includes a pair of fixed guide rails 6a and 6b extending in the front-rear direction, which are disposed on the vehicle body at predetermined intervals in the left-right direction. A drive mechanism 6f having a slide rail 6c, 6d slidably guided, and an electric motor 6e for sliding the slide rail 6c, 6d with respect to the fixed guide rails 6a, 6b;
Support brackets 6g and 6h formed at front end positions of the slide rails 6c and 6d;
g, 6h, cushion support brackets 6j, 6k formed at the upper end, and slide rails 6c, 6d, cushion support brackets 6m, 6n formed at rear end positions.
And an ottoman mounting member 6o bridged between the support brackets 6g and 6h.

Here, the ottoman mounting member 6o
Are supporting pipes 6p and 6q bridged on the front end side and the rear end side of the upper ends of the supporting brackets 6g and 6h, respectively, a central mounting bracket 6r bridged between central positions of the supporting pipes 6p and 6q, and Left and right mounting brackets 6s and 6t are bridged in parallel to the left and right positions of the bracket 6r.

Then, the cushion support bracket 6j,
A front mounting portion 5a of the cushion frame 5 is supported by 6k, and a rear mounting portion 5b of the cushion frame 5 is supported by the cushion support brackets 6m and 6n.
The ottoman 4 is attached to the ottoman attachment member 6o.

As shown in FIGS. 3 and 6, the ottoman 4 is fixed to the lower surface of the left and right mounting brackets 6s and 6t of the ottoman mounting member 6o so as to project forward and downward, respectively, for example, about 30 degrees with respect to a horizontal plane. An ottoman main body 10 is supported by a tiltable support arm 8 via a first link mechanism 9 so as to be deployable.

Further, the first link mechanism 9 has a distal end in a state where the ottoman body 10 rotatably supported by the left and right support arms 8 at predetermined intervals is substantially orthogonal to the support arm 8. Have a turning link 9A bent inward and formed in a U-shape, and a turning link 9B formed in a crank shape, and the tips of the turning links 9A and 9B are disposed on the ottoman body 10. A support arm 13 attached to the left and right rear ends of a U-shaped support frame 12 having an open front end is rotatably connected.

Here, as shown in FIGS. 4 and 6, the connection relationship between the rotating links 9A and 9B is shown in FIG.
Is stored in the storage recess 2 a of the seat cushion 2, the rotation links 9 A and 9 B are in proximity to each other and are inclined, for example, by about 30 ° with respect to a horizontal plane, and a straight line connecting the connection points with the support arm 8 is provided. Support arm 1 for
The straight line connecting the connection points for 3 intersects,
And the distance between the connecting points of the supporting arms 8
The distance between the connection points 3 is selected to be short, so that the ottoman body 10 is maintained in a state of being inclined at about 70 ° with respect to the horizontal line.

When the ottoman main body 10 is unfolded forward from the storage position, the ottman main body 10 is gradually separated by the counterclockwise rotation of the rotating links 9A and 9B, thereby gradually separating the two. The ottoman body 10 and the support arm 8 are substantially parallel to each other with the inclination angle being gentle and approaching a horizontal state, with the bases of the rotating links 9A and 9B being substantially perpendicular to the support arm 8, respectively. .

Further, the ottoman body 10 includes a U-shaped support frame 12 described above, a box-shaped slide frame 14 having an open rear end surface guided slidably by the support frame 12, A synthetic resin frame 16 attached to the front end face of the frame 14 via a wire frame 15
And a pad 17 covering the synthetic resin frame 16;
And a trim material 18 covering the pad 17.

On the other hand, a support case 21 having an inverted U-shaped cross section is provided on the center mounting bracket 6r of the ottoman mounting member 6o described above and extends downward and rearward, and a linear drive mechanism 22 is provided in the case body 21. Has been established.

This linear drive mechanism 22 has a gear unit 24 pivotally mounted on the rear end side of the case body 21 for reducing the rotational driving force of the electric motor 23, and has an output rotary shaft 25 protruding from its front end. The other end of the double screw shaft 26 whose front end is rotatably supported by the front end of the case body 21 is connected. A nut 27 as a mover is screwed to the double screw shaft 26.

A second link mechanism 28 for moving the ottoman body 10 is connected to the nut 27. The second link mechanism 28 includes a main link 2 extending forward which is rotatably mounted on a nut 27 in a vertical plane.
9 Reference numerals 25A and 25B are stoppers for the nut 27.

The distal end of the main link 29 is rotatably disposed on the connecting rod 14b of the sliding frame 14 of the ottoman body 10 described above.
Is rotatably connected to a free end of a rotating link 30 which is parallel to the sliding frame 14 in the storage position.

A support bracket 31 projecting from the lower end of the support frame 12 of the ottoman body 10 at a position slightly behind the distal end of the main link 29 is connected rotatably.

Here, the linear drive mechanism 22, the first link mechanism 9, and the second link mechanism 28 constitute a deployment mechanism. Next, the operation of the above embodiment will be described.

Now, as shown in FIG. 4, a nut 27 is screwed on the base side of the double screw shaft 26. In this state, the ottoman main body 10 is connected to the recessed portion of the seat cushion 2 via the main link 29. 2a, the rotating links 9A and 9B are close to each other, for example, 30 degrees with respect to the horizontal plane.
And a straight line connecting the connection points to the support arm 13 intersects a straight line connecting the connection points to the support arm 8.
The distance between the connection points of the support arm 13 is selected to be shorter than the distance between the connection points described above, whereby the ottoman body 10 is maintained in a state of being inclined by about 70 ° with respect to the horizontal line.

In this state, the sliding frame 14 of the ottoman main body 10 has penetrated all the way into the U-shaped support frame 12 and is supported by the pad 17.
Is completely covered, the upper end of the pad 17 is in contact with the lower surface of the seat cushion 2, the width of the pad 17 in the vertical direction is less than the minimum height of the seat cushion 2, and the lower end of the pad 17 is Away from

In this stored state, the output rotation shaft 25 of the gear unit 24 is rotated, for example, clockwise by driving the electric motor 23, for example, in the forward direction, so that the double screw shaft 26 is rotated.
Is rotated clockwise, the nut 27 is moved forward accordingly.

As a result, the rotation links 9A and 9B rotate counterclockwise, whereby the inclination angle of the straight line connecting the connection points of the rotation links 9A and 9B on the support arm 12 gradually becomes horizontal. The ottoman body 10 gradually moves toward a horizontal state while being pushed forward in accordance with the direction.

When the inclination angle of the ottoman main body 10 gradually goes in the horizontal direction, the angle between the main link 29 and the support bracket 31 of the ottoman main body 10 gradually increases, so that the rotation link 30 is used. The sliding frame 14 is gradually slid forward, and the pad 17 moves forward.

Then, as shown in FIG. 5, when the nut 27 advances to the front end side of the double screw shaft 26, it comes into contact with the stopper 25B at the advanced position and stops. When the energization of the electric motor 23 is stopped, the rotation of the double screw shaft 26 by the gear unit 24 is stopped, the forward movement of the ottoman 4 is stopped, and the ottoman 4 is stopped at a predetermined footrest position.

At this time, as shown in FIG.
Can greatly protrude forward with respect to the support frame 12 so that the pad 17 can support the calf of the seated person,
The seated person can take a relaxed posture.

In order to return from the foot rest position to the stowed position, the electric motor 23 is driven in reverse to rotate the gear unit 2.
4 by rotating the output rotation shaft 25 in a counterclockwise direction, the nut 27 is retracted, and the main link 29 connected to the nut 27 is retracted, so that the ottoman body 10 is moved from the footrest position of FIG. The pad 17 moves so as to cover the support frame 12 by gradually inserting the slide frame 14 into the support frame 12 while moving backward while the inclination angle gradually increases.

Thereafter, when the nut 27 reaches the storage position shown in FIG. 4, it comes into contact with the stopper 25A and stops. The energization of the electric motor 23 is stopped and its rotation is stopped, and the rotation of the output rotary shaft 25 of the gear unit 24 is stopped accordingly.
The rotation of the nut 6 is also stopped, the retraction of the nut 27 is stopped, and the ottoman 4 is stopped at the storage position where the ottoman 4 is stored in the storage recess 2 a of the seat cushion 2 with the pad 17 completely covering the support frame 12.

As described above, according to the above embodiment, by rotating the double screw shaft 26 to move the nut 27 forward and backward, the ottoman body 10 is extended forward and the sliding frame 14 is slid forward. And rotation of the ottoman 4 and forward movement can be simultaneously performed with a simple link mechanism.

Further, 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.

The deployment mechanism for deploying the ottoman main body 10 is supported by the ottoman mounting member 6o formed on the seat slide mechanism 6, and is supported independently of the seat cushion 2. It can be unitized, can be easily assembled, can easily perform trim processing of the skin material 2c of the seat cushion 2, and can be easily applied to different vehicle models. Parts can be shared.

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.

In the above-described embodiment, the case where the rotating link 9A is formed in a rectangular shape and the rotating link 9B is formed in a crank shape is described. However, the present invention is not limited to this. The link can be formed in any shape as long as the link is configured.

Further, in the above-described embodiment, the case where the pad 17 serving as the cushion portion is mounted on the sliding frame 14 is described. However, the present invention is not limited to this. A cushion portion may be formed.

Furthermore, in the above-described embodiment, the case where the double screw shaft 26 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.

[0046]

As described above, according to the electric ottoman device according to the first aspect, the electric ottoman device is separated from the seat cushion frame by supporting the deployment mechanism for deploying the ottoman body by the seat slide mechanism. Independent unit, which facilitates assembly, facilitates trimming of the seat cushion, and does not affect the design even if the seat cushion frame is different for each model. Thus, an effect is obtained that components can be shared.

According to the electric ottoman device according to the second aspect, the mounting member is disposed between the slide rails guided by the fixed guide rails, and the deployment member is supported by the mounting member. When the seat is slid, the electric ottoman device is also slid, so that an effect of preventing the positional relationship between the two from occurring can be prevented.

Further, according to the electric ottoman device according to the third aspect, the linear moving mechanism and the first link mechanism are supported on the mounting member, and the second link mechanism is provided on the moving element of the linear moving mechanism. An effect is obtained that the electric ottoman body can be reliably unitized.

[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 exploded perspective view of a rotation link, a support arm, and a support frame of the electric ottoman device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seat 2 Seat cushion 3 Seat back 4 Ottoman 5 Cushion frame 5a Attachment part 5b Attachment part 6 Seat slide mechanism 6o Ottoman attachment member 8 Support arm 9 First link mechanism 9A Rotating link 9B Rotating link 10 Ottoman body 12 Support frame 14 Sliding frame 22 Linear drive mechanism 23 Electric motor 24 Gear unit 25 Rotating shaft 25A Stopper 25B Stopper 26 Double screw shaft 27 Nut 28 Second link mechanism 29 Main link 30 Rotating link 31 Support bracket

Claims (3)

[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 in a front part of the ottoman to a footrest position, an electric motor that moves the ottoman body between the storage position and the footrest position, An electric ottoman device comprising a seat slide mechanism that supports a deployment mechanism. 2. The seat slide mechanism includes a pair of left and right fixed guide rails, and a pair of slide rails that are guided and slid by the two fixed guide rails, and support the deployment mechanism between the slide rails. The electric ottoman device according to claim 1, wherein a mounting member is provided. 3. The ottoman main body has a sliding body arranged to be able to move forward and backward, the deployment mechanism has a mover that moves in the vehicle longitudinal direction by an electric motor, and a straight line supported by the mounting member. A moving mechanism, a first link mechanism rotatably supported by a support bracket mounted on the mounting member for expanding the ottoman body from the storage position to the foot-resting position, and a moving element of the linear moving mechanism. And a second link mechanism for extending the ottoman body from the storage position to the foot rest position side and projecting the sliding body forward from the ottoman body. 3. The electric ottoman device according to 2.