JP5767001B2 - Ottoman equipment - Google Patents

Description

  The present invention relates to an ottoman device provided in a seat of a vehicle or the like.

  An ottoman device provided in a seat of a vehicle or the like includes a footrest for placing a leg and a support device for supporting the footrest. The support device generally supports the footrest in a rotatable state. With this rotating support device, the position of the footrest can be switched between a storage position stored below the seat and a use position rotated forward of the seat.

  In order to improve the comfort of the occupant, the ottoman device is required to have a system (Patent Documents 1 to 5) in which the footrest is not only pivoted upward but is largely pulled out to the front position. For example, an ottoman device is known in which the support device is configured by a link mechanism including a plurality of links and a plurality of joint shafts that connect the plurality of links in a relatively rotatable state (Patent Document). 1 to 4. Patent Document 5 describes nothing about supporting a footrest using a link mechanism. By this link mechanism, when the footrest is moved from the storage position to the use position, the footrest can be automatically moved forward.

  The footrest is folded and stored substantially vertically in a limited space under the seat, and is used by being raised substantially horizontally by pulling it forward. Therefore, the support device is required to have a complicated movement with many restrictions. In order to realize such a movement, a dense and complicated link mechanism composed of four or more links is employed in the support device. As a lock means for preventing the footrest in the use position from sinking, a lock means using a gas spring (for example, Patent Documents 2 and 4) is generally used. In addition, there are those using an electric motor as the locking means (for example, Patent Document 1) and those using a large disk-shaped locking device (for example, Patent Document 3). However, these locking means are large and heavy without stopping, and it is not always easy to incorporate them into a seat compactly.

JP 2006-006718 A JP 2006-036136 A JP 2006-198104 A JP 2010-137717 A JP 2008-013132 A

  The present invention solves the above-mentioned problems, and is compact by a rational combination of a locking means for preventing the footrest from sinking safely and reliably and its link mechanism, and can be easily reduced in weight and cost. A ottoman device is provided.

The above-described problem is an ottoman device that is installed in a seat and is used by being pulled forward, a footrest for placing a leg, and a link mechanism that pulls out a footrest stored under the seat to a forward position away from the seat; The first locking means for preventing the footrest that has received a load from being rotated, and the link mechanism is composed of at least four links and a joint shaft that links the links so as to be relatively rotatable, The first lock means has a first lock shaft which is a joint shaft integrally fixed to one link connected to each other, a winding inner diameter smaller than the outer diameter of the first lock shaft , and one end of the link a first coil spring wound around the tightened state the first locking shaft in a fixed state, and a cam loosening the first coil spring acts on the free end of the first coil spring, the cam When the load is applied to the footrest, the first coil spring locks the first lock shaft so that it does not rotate, preventing the footrest from turning downward. This is solved by providing an ottoman device (claim 1). Thereby, it becomes possible to incorporate in a compact manner locking means (first locking means) for preventing the footrest from sinking into the ottoman device using a link mechanism for supporting the footrest.

  Further, in the ottoman device of the present invention, when the footrest in the use position is subjected to an abnormal load downward and the first lock means alone cannot prevent the footrest from rotating downward, the footrest is subjected to an abnormal load. It is also preferable to provide the second locking means (claim 2). As a result, even if an unexpected abnormal load is applied to the footrest and the first coil spring slides with respect to the first lock shaft, the footrest can be prevented from descending at a predetermined position. Therefore, the safety of the ottoman device can be further increased. In addition, since the locking force of the first locking means can be suppressed, the ottoman device can be further reduced in size and weight.

  Further, in the ottoman device of the present invention, the third lock means for preventing the footrest from rotating upward when the footrest is in the storage position is provided, and when the third lock means is released, the plurality of links or It is also preferable to provide an initial-action spring that acts on any one of the joint shafts and urges the footrest to rise to a predetermined position. This not only prevents the footrest in the storage position from jumping forward, but also allows the footrest to be automatically moved to a position where it can be easily operated when using the footrest.

In this rotation restricting type first locking means, if the strength is ensured by increasing the wire diameter of the first coil spring due to insufficient strength near the fixed end of the first coil spring, the structure becomes large and the weight increases. For this reason, the part which winds the first coil spring of the first lock shaft is divided into a brake part and a winding fixing part, the brake part is fixed to one link, the winding fixing part is fixed to the other link, and the first coil spring the free end is on the brake side, wound in the direction of the fixed end is fixed side wrap and utilizing the frictional resistance due to the tightening of the fixing portion wound to fix the first coil spring preferably (claim 4).

In addition to the above-mentioned rotation restricting type, the first lock means has a spring holder for storing the first coil spring pivotally supported on the seat side, and the first lock shaft has a footrest on one end side. It is a slide shaft that is pivotally supported to the side and the other end is freely opened. When a load is applied to the footrest, the longitudinal movement of the first lock shaft is restricted by tightening the first coil spring. Thus, it is also possible to employ a slide-regulating first locking means that prevents the footrest from rotating (Claim 5 ).

Incidentally, in the ottoman device of the present invention, it is preferable to provide an operating means for operating the footrest to footrest (claim 6). In addition to operating means for operating the footrest, the vehicle seat has multiple operations such as operating means for operating the seat seat height and operating means for adjusting the angle of the seat back. In general, it is difficult to know which operation means can be used to operate the footrest. However, such a confusion can be avoided by providing the footrest itself with operating means for operating the footrest.

  As described above, according to the present invention, it is possible to provide a ottoman device that can safely and reliably prevent the footrest from sinking and that can be easily reduced in weight and cost.

It is the side view which showed the ottoman apparatus of the 1st embodiment with which the seat of the motor vehicle was equipped. It is the side view which showed the ottoman apparatus of the 1st embodiment. It is the side view to which the 1st locking means in the ottoman apparatus of a 1st embodiment was expanded. It is a side view explaining operation | movement of the 2nd locking means and the 3rd locking means in the ottoman apparatus of a 1st embodiment. It is the perspective view which showed an example of the place which provides the operation lever of an operation means in the ottoman apparatus of a 1st embodiment. It is the perspective view which showed the other example of the place which provides the operation lever of an operation means in the ottoman apparatus of a 1st embodiment. It is the perspective view which showed the state which decomposed | disassembled the ottoman apparatus of the 2nd embodiment into the footrest and the link mechanism. It is the top view to which the 1st locking means periphery in the ottoman apparatus of a 3rd embodiment was expanded. It is the side view which showed the ottoman apparatus of the 4th embodiment.

  A preferred embodiment of the ottoman device of the present invention will be described more specifically with reference to the drawings. In the following, the ottoman device of the present invention will be described by taking four embodiments from the first embodiment to the fourth embodiment as examples, but the technical scope of the ottoman device of the present invention is in these embodiments. Without limitation, changes can be made as appropriate.

[Ottoman device of first embodiment]
First, the ottoman device of the first embodiment will be described. FIG. 1 is a side view showing an ottoman device 10 of a first embodiment provided in a seat 50 of an automobile. FIG. 2 is a side view showing the ottoman device 10 of the first embodiment. FIG. 3 is an enlarged side view of the first locking means 13 in the ottoman device 10 of the first embodiment. FIG. 4 is a side view for explaining the operation of the second locking means 14 and the third locking means 15 in the ottoman device 10 of the first embodiment.

  As shown in FIG. 1, the ottoman device 10 of the first embodiment is used by being installed in a seat 50. As shown in FIG. 2, the ottoman device 10 includes a footrest 11 for placing a leg, a link mechanism 12 that pulls the footrest 11 forward from a storage position below the seat 50 to a usable range, and a footrest in the use position. A first locking means 13 for preventing the 11 from rotating by a load, and a second locking means 14 for forcibly locking at a predetermined position when the first locking means 13 is rotated by an abnormal load. The third locking means 15 for preventing the footrest 11 in the storage position from jumping out and the operating means 16 for operating the footrest 11 are provided.

  The link mechanism 12 is preferably composed of four or more links because the footrest 11 housed in a limited space needs to be pulled out significantly forward. In the ottoman device 10 according to the first embodiment, the link mechanism 12 is connected to six members 12a, 12b, 12c, 12d, 12e, and 12f in a relatively rotatable state as shown in FIG. A so-called four-link mechanism (four-bar link mechanism) composed of seven joint shafts 12g, 12h, 12i, 12j, 12k, 12m, and 12n is employed. The members 12b, 12c, 12d, and 12e correspond to the links. Thereby, while the footrest 11 is stored compactly under the seat 50, the footrest 11 can be projected forward (for example, 20 cm or more) from the seat 50 during use. In the ottoman device 10 of the first embodiment, the link mechanism 12 is provided with the initial motion spring 17, which will be described later.

  As shown in FIGS. 2 and 3, the first lock means 13 is fitted to the first lock shaft 13a for locking the movement of the footrest 11 and the first lock shaft 13a, and one end (fixed end 13d) is linked. The other end (free end 13e) is fixed to the first coil spring 13b in a free state. The inner diameter of the first coil spring 13b in the natural state is set to be about 4 to 7% smaller than the outer diameter of the first lock shaft 13a. The first lock shaft 13a (joint shaft 12g) is fixed to the link 12b, and rotates integrally with the link 12b. When a downward load is applied to the footrest 11 and the link 12b is rotated downward, the fixed end 13d of the first coil spring 13b (FIG. 3) fixed to the link 12d is wound up (the first coil spring 13b is tightened). The first lock shaft 13a is tightened. Accordingly, the frictional resistance acting between the first coil spring 13b and the first lock shaft 13a is increased, so that the footrest 11 does not rotate downward. From the viewpoint of safety, it is desirable that the footrest 11 can receive a load of about 1000 N, assuming that the child jumps and the like.

On the contrary, when the footrest 11 is moved from the storage position to the use position, the fixed end 13d of the first coil spring 13b is loosened and pushed in the loosening direction (the direction in which the first coil spring 13b is loosened, opposite to the winding direction). Thus, the first coil spring 13b is in a rotatable state. Thereby, it is not necessary to operate the operation lever 16a in the height adjustment in the direction in which the footrest 11 is moved to the use position. The usable range in which the height of the ottoman device 10 of the first embodiment can be adjusted is from the state in which the footrest 11 is substantially horizontal to the state in which the footrest 11 is downward by about 30 °. For example, as shown in FIG. 4, one of the members 12a, 12b, 12c, 12d, 12e, and 12f (link 12b in the example of FIG. 4) is formed in a disk shape. This can be realized by providing a recess 12b ₁ of a predetermined size on the outer periphery and a structure in which a hook is engaged with the recess. In the example of FIG. 4, the usable range is from the state of FIG. 4 (a) to the state of FIG. 4 (b).

  By the way, in order to move the footrest 11 from the use position toward the storage position, the first coil spring 13b must be relaxed with respect to the first lock shaft 13a. The ottoman device 10 according to the first embodiment is realized as follows. That is, as shown in FIG. 3, the first unlocking means for making the first coil spring 13b loose with respect to the first lock shaft 13a by pushing down the end (free end 13e) of the first coil spring 13b. 13c (cam) is provided. The first lock release means 13c can be operated by the operation lever 16a of the operation means 16 (FIG. 2).

  The place where the operation lever 16a of the operation means 16 for operating the footrest 11 is provided is not particularly limited, and may be provided on the seat 50. However, as shown in FIG. 5 and FIG. FIG. 5 is a perspective view showing an example of a place where the operation lever 16a is provided in the ottoman device 10 of the first embodiment. FIG. 6 is a perspective view showing another example of a place where the operation lever 16a is provided in the ottoman device 10 of the first embodiment. This makes it easy to understand the position of the operation lever 16a and allows the footrest 11 to be operated intuitively without hesitation. When the operation lever 16a is away from the first locking means 13, an inner cable (used as a brake wire for bicycles) or the like covered with a cylindrical cover in a state in which the wire is slidable in the longitudinal direction. It is good to connect with.

  When the operation lever 16a is provided on the footrest 11, if the footrest 11 protrudes from the footrest 11, the leg may hit the operation lever 16a and the seating comfort of the seat 50 may be reduced. For this reason, as shown in FIG. 5 and FIG. 6, it is preferable that the upper surface or the side surface of the footrest 11 is recessed to provide a recess 11a so as to be accommodated therein. Further, the distal end of the footrest 11 is not desirable as a place where the operation lever 16a is provided because it is difficult to reach, and it is not appropriate to provide it at the front position where the leg hits during use. In addition, it is preferable that the operation lever 16a has a structure in which the footrest 11 can be pulled out by pulling up with a finger of a hand in a sitting posture.

Now, the load applied to the footrest 11 is originally received by the first locking means 13a. However, there remains a concern that the child will slip on the footrest 11 due to an excessive load such as a child jumping up and down. For this purpose, the second locking means 14 that guarantees secure locking is proposed. Even if the first locking means 13 cannot prevent the downward rotation, it can be locked safely and reliably. Further, the locking force of the first locking means 13 can be lowered to a minimum of about 200 N, and the ottoman device 10 can be significantly reduced in weight (in the ottoman device 10 of the first embodiment, the first The locking force of one locking means 13 is designed to be 1000 N.) Further, since the third locking means 15 is provided, even if an external force is applied due to an accident, it is possible to prevent the footrest 11 from jumping out from the storage position, which is safe and secure. The third locking means 15 is built into the link mechanism 12 and realized in a compact manner. In the ottoman device 10 of the first embodiment, as shown in FIG. 4, the second locking means includes hooks that are engaged with the recesses 12b ₁ and 12b ₂ provided on the outer peripheral portion of the disk-like portion at one end of the link 12b. 14 and third locking means 15 are commonly used. In the following, “second locking means 14” and “third locking means 15” may be referred to as “hook 14” and “hook 15”, respectively. The proximal ends of the hooks 14 and 15 are biased by a spring, and unless the operating means 16 (see FIGS. 2 and 3) is operated, the distal ends of the hooks 14 and 15 are linked 12b in the natural state. It is pressed against the outer peripheral part of the disk-shaped part at one end of the head and is safe and secure.

This will be specifically described below. FIG. 4A is a diagram showing the state of the hooks 14 and 15 when the footrest 11 is moved to the upper limit in the usable range (when the link 12b is moved to the upper limit). At this time, since the hook 15 is in the state of contact with the vertical wall surface of the upper recess 12b _1, can not pivot link 12b is upward than, footrest 11 can not even be moved upward .

  In this state, when an excessive load is applied and slips, the link 12b rotates downward and is locked in the state shown in FIG. The locking force in this case is the sum of the first locking means 13 and the second locking means 14 and becomes strong. When the operating means 16 is operated and the hooks 14 and 15 are lifted, the downward movement is possible, and FIG. 4C shows the state. The hooks 14 and 15 are configured to rotate integrally with the first lock release means 13c and the operation lever 16a. In the state of FIG. 4 (c), since the hooks 14 and 15 are held in a floating state, the first unlocking means 13c interlocked therewith is held with the coil spring 13b loosened, and the hand is released from the operation lever 16a. Can be operated freely.

FIG. 4D is a diagram showing the state of the hooks 14 and 15 when the footrest 11 has moved to the storage position. At this time, since the hooks 14 and 15 exhibit the function as the third locking means 15, the footrest 11 does not jump out unless the operating means 16 (FIG. 2) is operated. Up to this point, the case where the recesses 12b ₁ and 12b ₂ are provided in the link 12b has been described. However, the same applies to the other links 12c, 12d, and 12e provided with the recesses 12b ₁ and 12b ₂ directly or as separate members. Operation can be realized.

  As described above, the ottoman device 10 of the first embodiment moves the footrest 11 largely forward by the link mechanism 12 and prevents the footrest 11 from sinking by the first locking means 13. 14 is safe and secure. Also, by sharing the majority with the second locking means 14, the burden on the first locking means 13 can be greatly reduced from about 1000N to about 200N, and the ottoman device 10 as a whole is simplified and reduced in weight. Led to. Also, as shown in FIG. 2, by providing an initial spring 17, the footrest 11 is automatically moved forward by one operation of the operation lever 16 a during use, and the footrest 11 is moved to the lower side of the seat 50 during storage. It can be stored compactly. The ottoman device 10 can be attached to various seats, but is suitable as a vehicle seat that is installed in a limited space. Especially, it can equip suitably in a motor vehicle seat.

[Ottoman device of the second embodiment]
Next, the ottoman device of the second embodiment will be described. FIG. 7 is a perspective view showing a state in which the ottoman device 10 of the second embodiment is disassembled into the footrest 11 and the link mechanism 12. As shown in FIG. 7, the joint shaft 12m is used as the first lock shaft 13a. In FIG. 7, the link mechanisms 12 such as the members 12a, 12b, 12c, 12d, 12e, and 12f are provided in a pair on the left and right sides. However, the same applies to the ottoman device 10 of the other embodiments. Thereby, the footrest 11 can be supported more stably. Similar to the ottoman device 10 of the first embodiment, the ottoman device 10 of the second embodiment uses the rotation restricting type first locking means 13.

In the ottoman device 10 of the second embodiment, as shown in FIG. 7, a coil spring 17 for initial movement is externally fitted to the joint shaft 12i. Both ends of the initial motion coil spring 17 are fixed to the link 12b and the link 12d, respectively, and the initial motion coil spring 17 biases the link 12b and the link 12d so that the footrest 11 moves upward. . Therefore, when the footrest 11 is in the storage position, by operating the operation unit 16, the hook 14, 15 (see Figure 4) is floated from the recess 12b _2, the state shown in FIG. 4 (c) After that, the state of FIG. 4B is automatically reached. That is, the footrest 11 can be automatically moved from the storage position to the lower limit of the usable range. Thereby, operation of the footrest 11 can be performed easily.

[Ottoman device of the third embodiment]
Next, the ottoman device of the third embodiment will be described. FIG. 8 is an enlarged plan view of the vicinity of the first locking means in the ottoman device 10 of the third embodiment. Similar to the ottoman device 10 of the first embodiment, the ottoman device 10 of the third embodiment uses the rotation restricting type first locking means 13.

However, the ottoman device 10 of the third embodiment, as shown in FIG. 8, a first locking shaft 13a (joint shaft 12m in the example of FIG. 8) is divided into a fixed portion 13a ₂ wound and the brake portion 13a _1, Although provided separately and continuously, the brake portion 13a ₁ is fixed to the link 12d and integrally rotates. On the other hand, the winding fixing portion 13a ₂ is configured to rotate integrally with the link 12f. The first coil spring 13b is wound so as to cross the fixing portion 13a ₂ wound and the brake portion 13a _1, one end is fixed to (fixed end 13d) of the member 12f (footrest mounting bracket), the free other end (free end 13e) state It is said. Further, the free end 13e is rotated to the loose side by the first lock release means 13c supported by the footrest mounting bracket 12f, so that the first coil spring 13b is loosened and locked in the same manner as the ottoman device 10 of the first embodiment. Is configured to release. A first coil spring 13b, by employing a structure in turn wound over the fixing portion 13a ₂ side winding and the brake portion 13a ₁ side as described above, it is possible to significantly reduce the load on the fixed end 13d. Therefore, the wire diameter of the first coil spring 13b can be reduced, leading to weight reduction. Incidentally, in the case of FIG. 8, the first coil spring 13b, by increasing the number of turns of the fixed portion 13a ₂ wound than the number of turns of the brake portion 13a _1, the fixing portion 13a ₂ wound than the friction of the brake portion 13a ₁ Friction is greater. Therefore, theoretically, it does not rotate even if the fixed end 13d is not fixed.

[Ottoman device of the fourth embodiment]
Finally, the ottoman device of the fourth embodiment will be described. FIG. 9 is a side view showing the ottoman device 10 of the fourth embodiment. In the ottoman device 10 of the fourth embodiment, as shown in FIG. 9, the link mechanism 12 has eight members 12 a, 12 b, 12 c, 12 d, 12 e, 12 f, 12 p, 12 q and these can be relatively rotated. 8 joint shafts 12g, 12h, 12i, 12k, 12m, 12n, 12r, and 12s that are connected in such a state. The link 12c and the link 12d are arranged in a state of intersecting in the middle. One end side (front end side) of the link 12p is pivotally supported by a joint shaft 12r so as to be rotatable with respect to an intermediate portion of the link 12f, and the other end side (base end side) of the link 12p is a link 12q and a joint shaft. It is pivotally supported with respect to the link 12a via 12s. Even with this link mechanism, the footrest 11 can be protruded forward from the seat 50 during use, while the footrest 11 is stored compactly below the seat 50.

  In the ottoman device 10 from the first embodiment to the third embodiment described above, the first locking means 13 is of a rotation restricting type that restricts the rotation of the first lock shaft 13a. In the ottoman device 10, the first locking means 13 is of a slide restricting type that restricts the sliding of the first lock shaft 13a. Specifically, as shown in FIG. 9, the first coil spring 13b is accommodated in the spring holder 18, and the base end side of the first lock shaft 13a (link 12p in the example of FIG. 9) is placed on the first coil spring 13b. Inserting. Since the first coil spring 13b is smaller than the first lock shaft 13b in a natural state, the first lock shaft 13a is always tightened, and the first lock shaft 13a cannot slide relative to the first coil spring 13b, Since the coil spring 13b is also accommodated in the spring holder 18 and its movement in the longitudinal direction is restricted, the first lock shaft 13a is stretched between the footrest 11 and the seat 50. For this reason, the footrest 11 does not descend with normal force. As described above, even when the slide restricting first locking means 13 is used, the same operation as that when the rotation restricting first locking means 13 is used can be realized. In the ottoman device 10 of the fourth embodiment, configurations not particularly mentioned, such as a spring lock mechanism using the first lock shaft 13a and the first coil spring 13b, are the same as those of the ottoman device 10 from the first embodiment to the third embodiment. .

10 Ottoman device 11 Footrest 11a Recess 12 Link mechanism 12a Seat mounting bracket (member)
12b Link (member)
12c Link (member)
12d link (member)
12e Link (member)
12f Footrest mounting bracket (member)
12g Joint shaft 12h Joint shaft 12i Joint shaft 12j Joint shaft 12k Joint shaft 12m Joint shaft 12n Joint shaft 12p Link (member)
12q link (member)
12r joint shaft 12s joint shaft
13 First lock means 13a First lock shaft 13a ₁ Brake part 13a ₂ Winding fixing part 13b First coil spring 13c Cam (first lock release means)
13d Fixed end 13e Free end 14 Hook (second locking means)
15 Hook (third locking means)
16 Operating means 16a Operating lever 16b Operating shaft 17 Spring for initial movement 18 Spring holder 50 Seat

Claims (6)

An ottoman device that is installed in a seat and is used by being pulled forward,
It is composed of a footrest for placing the legs, a link mechanism that pulls out the footrest stored under the seat to a front position away from the seat, and a first locking means that prevents the footrest that has received the load from rotating. ,
The link mechanism is composed of at least four links and a joint shaft that connects the links so as to be relatively rotatable,
The first locking means is
A first lock shaft which is a joint shaft integrally fixed to one of the links connected to each other;
A first coil spring having a winding inner diameter smaller than the outer diameter of the first lock shaft and wound in a tightened state on the first lock shaft in a state where one end is fixed to the partner link;
A cam that acts on the free end of the first coil spring to loosen the first coil spring;
An operating lever to operate the cam;
Consists of
An ottoman device characterized in that, when a downward load is applied to the footrest, the first coil spring locks the first lock shaft so as not to rotate, thereby preventing the footrest from rotating downward.   The ottoman device according to claim 1, further comprising second locking means for receiving an abnormal load on the footrest. Provided with a third locking means for preventing the footrest from rotating upward when the footrest is in the storage position;
3. An ottoman according to claim 1 or 2, further comprising an initial motion spring that acts on any of the plurality of links or joint shafts to urge the footrest to a predetermined position when the third locking means is released. apparatus. The part of the first lock shaft that winds the first coil spring is divided into a brake part and a winding fixing part, the brake part is fixed to one link, the winding fixing part is fixed to the other link,
The first coil spring is wound in such a direction that the free end side is the brake portion side and the fixed end side is the winding fixing portion side, and the first coil spring is fixed using frictional resistance accompanying tightening of the winding fixing portion. Any of the ottoman devices. An ottoman device that is installed in a seat and is used by being pulled forward,
It is composed of a footrest for placing the leg, a link mechanism that pulls out the footrest stored on the lower side of the seat to the front position away from the seat, and a first lock means that prevents the footrest that receives the load from rotating,
The link mechanism is composed of at least four links and a joint shaft that connects the links so as to be relatively rotatable,
The first locking means comprises a first locking shaft and a first coil spring having a winding inner diameter smaller than the outer diameter of the first locking shaft and wound around the first locking shaft in a tightened state, and the generated locking force Is due to the frictional resistance between the first lock shaft and the inner surface of the first coil spring,
A spring holder for storing the first coil spring is pivotally supported on the seat side so as to be rotatable,
The first lock shaft is a slide shaft that is pivotably supported at one end side to the footrest side and the other end is in a freely open state,
An ottoman device characterized in that, when a load is applied to the footrest, the movement of the first lock shaft in the longitudinal direction is restricted by tightening the first coil spring to prevent the footrest from rotating.   The ottoman device according to claim 1, wherein operating means for operating the footrest is provided on the footrest.

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