JP2000157366A - Electric ottoman device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constitute an ottoman provided on a front end side of a seat cushion by a simple mechanism and improve the shock absorbing characteristic at the time of collision of the front of a vehicle. SOLUTION: An ottoman constituted of an ottoman main body capable of developing forward and of an auxiliary unit arranged so as to advance and retract freely is stored in a storage recessed part formed in a front end part of a seat cushion in substantially vertical condition. The ottoman main body is held in such a way that an inclination angle becomes substantially horizontal condition by moving it forward by a first link mechanism 9, and a main link 26 is arranged between a nut 23 screw-fitted in a screw shaft 22 and the auxiliary unit. An engaging pin 23a of the nut 23 is engaged with an engaging long hole 26b of the main link 26, and this engaging pin 23a is locked by a lock mechanism 26R which is arranged in the main link 26 and whose locking is released at a load exceeding allowable load.

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 an electric drive 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 a disadvantage that the configuration is complicated.

Further, since the footrest is mounted so as to protrude forward from the front end of the seat cushion, for example, when applied to the front seat of a vehicle, the footrest protrudes forward even when the ottoman is in the storage position. The space in front of the foot is narrow, and the space in front of the foot that protrudes forward becomes narrow,
In particular, when a collision occurs in front of the vehicle, the instrument panel at the front of the cabin may move rearward and come into contact with the ottoman, and at this time, the ottoman cannot absorb the impact force, and the impact of the vehicle may be reduced. There is an unsolved problem of affecting the absorption characteristics.

SUMMARY OF THE INVENTION An object of the present invention is to pay attention to the unsolved problem of the conventional example, and it is possible to widen a space in front of a seated person's foot at a footrest position of an ottoman, An object of the present invention is to provide an electric ottoman device capable of absorbing an impact force when transmitted, and further simplifying a link mechanism.

[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 linear moving mechanism having a movable member that moves in the vehicle front-rear direction by an electric motor, and a linear moving mechanism that includes a slider that is provided to be able to move forward and backward with respect to the ottoman main body, and expands the ottoman main body from a storage position to a footrest position. A second link mechanism connected to a moving element of the linear moving mechanism to expand the ottoman main body from the storage position to the foot rest position side, and to project the slide body forward from the ottoman main body. A second link mechanism, wherein the second link mechanism is slidably connected to the movable element to expand the ottoman main body, and the main link and the movable element are always in a locked state; And a lock mechanism for setting a lock release state when a load greater than the allowable load acts on the link.

In the electric ottoman device according to the first 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 ottoman main body 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.

Further, the main link constituting the second link mechanism and the movable element of the linear movement mechanism are always kept in a locked state by the lock mechanism, so that the ottoman body can be deployed, and the main link can be extended from the front. By releasing the locked state by the lock mechanism when a load greater than the allowable load is applied, the main link is allowed to move backward, allowing the ottoman body and sliding body to retreat, and The impact force at the time of collision occurrence can be absorbed, and safety can be improved.

According to a second aspect of the present invention, in the electric ottoman apparatus according to the first aspect, the second link mechanism has one end rotatably connected to a movable element of the linear moving mechanism. A link, a rotating link rotatably supported between the tip of the main link and the sliding body, and one end fixed to the ottoman body and the other end extending along the ottoman body being the main link. And a bracket rotatably connected to the mover side of the link. The lock mechanism is configured such that the mover is engaged with a rear end of an engagement long hole formed in the main link. An engagement recess having an inclined surface that is disengaged from the engaged state in cooperation with the movable element when a load greater than the allowable load is applied to the main link while being engaged with the movable element in the state. Consists of a rotating member rotatably arranged on the link It is characterized in that is.

[0010] In the electric ottoman apparatus according to the second aspect, the forward deployment of the ottoman body and the forward sliding of the sliding body can be simultaneously performed by the second link mechanism, thereby simplifying the configuration. Be able to
A mover is rotatably disposed on the main link in a state in which the mover is engaged with the engagement long hole formed in the main link and the mover is engaged with the rear end side of the engagement long hole. The engagement recess of the moving member engages with the moving element to maintain the locked state. However, when a load greater than the allowable load on the rear side acts on the main link, the inclined surface of the engagement recess and the moving element cooperate. As a result, the pivoting member pivots into the unlocked state, allowing the main link to move rearward, allowing the ottoman body and the sliding body to retreat, thereby improving the shock absorption characteristics.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic perspective view showing a first embodiment of the present invention, and FIG. 2 is a side view of FIG.
Is a passenger seat of the vehicle, and a seat cushion 2
The seat back 3 can be tilted to the rear end side by, for example, a reclining mechanism (not shown), and can be rotated 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 rest position. And an ottoman 4 arranged in the.

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 front left and right ends of the front end of the cushion frame 5 so as to protrude forward and downward, and which is inclined at about 30 ° with respect to a horizontal plane. The ottoman main body 10 is supported by the ottoman main body 10 so as to be freely deployable via a link mechanism 9, and an auxiliary unit 11 as a sliding member is provided on the ottoman main body 10 so as to be able to move forward and backward.

The first link mechanism 9 is bent inwardly at a tip thereof in a state substantially perpendicular to the support arm 8 rotatably supported at a predetermined interval on the support arm 8. It has a pair of rotating links 9A and 9B having different lengths formed in a U-shape, and the front ends of the rotating links 9A and 9B are open at the front end disposed in the ottoman body 10. Is rotatably connected to a support arm 13 attached to the left and right rear end sides of the support frame 12.

Here, as shown in FIG. 4, the connection relationship between the rotating links 9A and 9B is such that the ottoman body 10 is housed in the housing recess 2a of the seat cushion 2 as shown in FIG. 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 links 9A and 9B in the clockwise direction gradually separates them, so that the ottoman body 10 is gradually tilted. 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.

Further, the auxiliary unit 11 has a rear end slidably held in left and right rod portions 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 mounted on the lower surface of the cushion frame 5 at the front side at the center in the vehicle width direction and a support case body 16 having an inverted U-shaped cross section extending downward and rearward. Is disposed, and a linear moving mechanism 17 is disposed in the case body 16.

This linear moving 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 its front end. 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 main link 26 is formed in a U-shape with an open upper end as viewed in cross section as shown in an enlarged view in FIG. 6, and engages with its left and right side plate portions 26a to extend in the longitudinal direction, respectively. A long hole 26b is formed, and an engaging pin 23a formed on the nut 23 is engaged in the long hole 26b.

A lock mechanism 26R is provided at the rear end side of the long engagement hole 26b of the main link 26. As shown in an enlarged view in FIG. 6, the lock mechanism 26R engages with the engagement pin 23a in a state where the engagement pin 23a of the nut 23 is engaged with the rear end side of the engagement elongated hole 26b on the lower end surface. And a turning arm 26d as a turning member having an engaging recess 26c.

Here, the engaging recess 26c is formed on an inclined surface 26e whose front end wall is gradually inclined rearward as it goes upward from the lower end surface, and a rear end wall opposed thereto is perpendicular to the lower end surface. The inclination angle of the inclined surface 26e is formed on the vertical surface 26f, and the rotation arm 26d is rotated clockwise in cooperation with the engaging pin 23a of the nut 23 when a load exceeding the allowable load on the rear side is applied to the main link 26. And the engagement pin 23
The angle is selected so that the locked state of a can be released.

Therefore, the engaging long hole 2 of the main link 26 is normally used.
The engaging pin 23a of the nut 23 is engaged with the rear end side of the nut 6b.
The engagement pin 23a is engaged therein, and the engagement pin 23a and the main link 26 are maintained in a locked state, but when a load greater than the allowable load on the rear link is applied to the main link 26, In response to the retraction of the main link 26, the engaging pin 23a is pressed against the inclined surface 26e of the engaging concave portion 26c, whereby the rotating arm 26d is rotated clockwise, and the locked state of the engaging pin 23a is released. Then, the rearward movement of the main link 26 is permitted.

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 connected to the ottoman body 10 in the storage position. It is rotatably connected to a free end of a parallel rotating link 27.

A support bracket 28 is formed at a position rearward from the distal end of the main link 26 by a predetermined distance toward the center lower surface of the support frame 12 of the ottoman body 10.
Are rotatably connected.

Next, the operation of the above embodiment will be described.
Now, as shown in FIG. 4, a nut 23 is screwed to the base side of the double screw shaft 22, and in this state, the engaging pin 23 a of the nut 23 is located behind the engaging long hole 26 b of the main link 26. The engaging pin 2 engages with the engaging recess 26c of the rotating arm 26d constituting the lock mechanism 26R.
3a and the main link 26 are in a locked state integrated with each other via a turning arm 26d. The ottoman body 10 is held in the storage recess 2a of the seat cushion 2 via the main link 26 at a storage position substantially along the front end of the seat cushion 2 inclined about 70 ° with respect to the horizontal line. I do.

In this state, the auxiliary unit 11 is configured such that the sliding frame 14 is supported by the supporting 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 upper portion of the ottoman main body 10 is entirely covered by the footrest cushion portion 14C of the auxiliary unit 11, and the width between the two becomes the shortest width. , The lower end of the auxiliary unit 11 is separated from the floor surface.

In this stored state, the output rotation shaft 20 of the gear unit 19 is rotated, for example, clockwise by driving the electric motor 18 forward, for example, in the forward direction.
Is rotated clockwise, the nut 23 is moved forward accordingly.

As the nut 23 advances, the engaging pin 23a engages and presses the inclined surface 26e of the rotating arm 26d.
Since only the reaction force for rotating the ottoman body 10 and the auxiliary unit 11 is used, the rotating arm 26d does not rotate clockwise, and the main link 26 also moves forward because the locked state is maintained. The ottoman body 10 connected thereto by the support bracket 28 is pushed forward from the state shown in FIG.

As a result, the rotating links 9A and 9B are rotated clockwise, whereby the supporting arm 1 is rotated.
The inclination angle of the straight line connecting the connecting points of the rotating links 9A and 9B in 3 gradually goes to the horizontal direction, and accordingly, the ottoman body 10 also gradually goes to the horizontal state while being pushed forward.

As the tilt angle of the ottoman body 10 gradually becomes horizontal, the angle between the main link 26 and the support bracket 28 of the ottoman body 10 gradually increases, and the auxiliary unit 11 is gradually slid forward, and the entire width of the ottoman 4 including the ottoman body 10 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 projects greatly forward with respect to 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 order to return from the foot rest position to the stowed position, the electric motor 18 is driven in reverse to rotate the gear unit 1.
9 is rotated counterclockwise, the nut 23 retreats, and the engaging pin 2 of the nut 23 is rotated.
The main link 26 connected to the rotation arm 26d of the lock mechanism 26R with the lock mechanism 26R retreats, and the ottoman body 10 moves rearward from the footrest position of FIG. The sliding frame 14 of the unit 11 is supported by the support frame 12 of the ottoman body 10.
The auxiliary unit 11 moves toward the ottoman body 10 by being gradually inserted into the inside.

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, and its rotation is 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.

By the way, when the ottoman 4 is deployed at a predetermined footrest position and a collision occurs in front of the vehicle,
As the instrument panel moves backward,
When the front end of the auxiliary unit 11 abuts, the auxiliary unit 11 is moved rearward, so that the main link 26 connected to the auxiliary unit 11 via the rotation link 27 also receives a load exceeding the allowable load. It acts on the rear side and is moved rearward.

At this time, the main link 26 is connected to the nut 23 via the lock mechanism 26R, and the nut 23 is screwed to the double screw shaft 22, so that the double screw shaft 2
2 does not move backward unless it rotates, a load exceeding the allowable load acting on the main link 26 is applied to the inclined surface 26e of the engaging recess 26c and the engaging pin 23a of the nut 23 via the rotating arm 26d. Will act between.

For this reason, when the rotation arm 26d is rotated clockwise, the engagement pin 2 is removed from the engagement recess 26c.
3a is disengaged, the locked state of the engagement pin 23a is released, the rearward movement of the main link 26 is allowed, the rotation link 27 is rotated counterclockwise, and the auxiliary unit 11 is accordingly turned. As the ottoman body 10 moves to the ottoman body 10 side, the ottoman body 10 rotates counterclockwise, and the tip of the auxiliary unit 11 moves backward, so that the shock absorbing characteristics of the entire vehicle body can be improved.

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 deployment of the ottoman body 10 forward and the sliding of the auxiliary unit 11 forward are 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, the main link 2 of the second link mechanism 25
6, an engaging long hole 26b is formed, and the engaging pin 23a of the nut 23 is engaged with the long engaging hole 26b.
3a is engaged with the engaging recess 26c of the rotating arm 26d constituting the lock mechanism 26R, and the engaging recess 26c is
6e, when the collision occurs in front of the vehicle and the instrument panel moves backward,
The lock state by 6d is released, the rearward movement of the main link 26 is allowed, and the shock absorbing characteristics can be improved.

In the above embodiment, a case has been described in which the rotating arm 26d constituting the lock mechanism 26R is maintained by its own weight so that the engaging pin 23a is engaged in the engaging recess 26c. However, the present invention is not limited to this. As shown in FIG. 7, an elastic body 26g such as a spring that biases the rotating arm 26d counterclockwise is provided between the rotating arm 26d and the main link 26, The lock mechanism 26R may be prevented from being inadvertently released from the locked state. Instead of the elastic body 26g, as shown in FIG. 8, the elastic body 26h having a curvature corresponding to the curvature of the engaging pin 23a. May be provided on the rotating arm 26d.

Further, in the above-described embodiment, the rotary arm 26d constituting the lock mechanism 26R is connected to the engagement elongated hole 26d.
b, the case is described in which it is rotatably disposed behind, but the present invention is not limited to this, and as shown in FIG. It may be arranged freely.

Further, in the above-described embodiment, the case where the inclined surface 26e is provided in the engagement concave portion 26c of the rotating arm 26d has been described. However, the present invention is not limited to this. The portion that engages with the front end 23a may be constituted by an engaging portion that is sheared by a load greater than the allowable load.

Further, in the above embodiment, the auxiliary unit 11 is provided on the ottoman main body 10 with the sliding frame 1.
4 has been described as being slidably connected, but the present invention is not limited to this.
May be nested in the ottoman main body 10 so that a large step is not formed between the auxiliary unit 11 and the ottoman main body 10 when the auxiliary unit 11 is advanced.

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.

[0048]

As described above, according to the electric ottoman device according to the first aspect, the sliding body is slidably provided on the ottoman main body, and this sliding body contracts toward the ottoman main body at the storage position. Thereby, the seat cushion can be securely stored in the storage recess provided on the front end side of the seat cushion, and it is possible to secure a wide foot space for the occupant. In this state, the ottoman body is deployed to the footrest position by the link member. As a result, the sliding body protrudes forward from the ottoman body, but the front space can be enlarged by the size of the storage recess, a wide footrest width can be secured, and the second link mechanism is configured. The main link and the mover of the linear movement mechanism are always kept in a locked state by the lock mechanism, and the ottoman body can be deployed,
When a load greater than the allowable load from the front is applied to the main link, the locked state of the lock mechanism is released, so that the main link can be moved rearward and the ottoman body and the sliding body can be retracted, and the vehicle The impact force at the time of a collision on the front side of the vehicle can be absorbed to improve safety.

According to the electric ottoman device of the second aspect, both the forward extension of the ottoman body and the forward sliding of the sliding body can be simultaneously performed by the second link mechanism. Can be simplified,
A mover is rotatably disposed on the main link in a state in which the mover is engaged with the engagement long hole formed in the main link and the mover is engaged with the rear end side of the engagement long hole. The engagement recess of the moving member engages with the moving element to maintain the locked state. However, when a load greater than the allowable load on the rear side acts on the main link, the inclined surface of the engagement recess and the moving element cooperate. The pivoting member pivots to rotate to the unlocked state, and allows the main link to move backward, thereby allowing the ottoman body and the sliding body to retreat, thereby improving the shock absorbing characteristics.

[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 a perspective view showing a 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 a perspective view showing a main link in the electric ottoman device according to the present invention.

FIG. 7 is a side view showing another example of the main link in the electric ottoman device according to the present invention.

FIG. 8 is a side view showing another example of the main link in the electric ottoman device according to the present invention.

FIG. 9 is a side view showing another example of the main link in 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 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 23a Engagement pin 25 Second link mechanism 26 Main link 26R Lock mechanism 26a Side plate 26b Engagement long hole 26c Engagement recess 26d Rotating arm 26e Inclined surface 26f Vertical surface 26g Elastic body 26h Elastic body 28 Support bracket

Claims (2)

[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. An ottoman body that is deployed from a storage position stored in a storage recess formed in a front portion of the ottoman body to a footrest position, and a sliding body that is disposed to be able to advance and retreat with respect to the ottoman body, and is configured by an electric motor. A linear moving mechanism having a moving member that moves in the vehicle front-rear direction, a first link mechanism that expands the ottoman body from a storage position to a foot-loading position, and the ottoman body connected to the moving member of the linear moving mechanism. A second phosphorus that is deployed from the storage position to the footrest position side and that projects the slide body forward from the ottoman body. A second link mechanism, wherein the second link mechanism is slidably connected to the movable element to expand the ottoman main body, and always locks the main link and the movable element. An electric ottoman device comprising at least a lock mechanism that sets an unlocked state when a load greater than an allowable load acts on a link. 2. A main link having one end rotatably connected to a mover of the linear moving mechanism, and a second link mechanism rotatable between a tip end of the main link and the sliding body. A pivot link pivotally supported by a bracket, one end of which is fixed to the ottoman main body, and the other end extending along the ottoman main body is rotatably connected to the mover side with respect to the main link rotational link. The lock mechanism engages with the mover in a state where the mover is engaged with the rear end of the long engagement hole formed in the main link, and the load on the main link is equal to or more than the allowable load. The main link is provided with an engaging concave portion having an inclined surface which is released from the engaged state in cooperation with the mover when a load is applied. The electric ottoman device according to claim 1, wherein: