JP2020000878A - Chair - Google Patents

Abstract

To provide a chair that can effectively propagate vibration stimulation generated by a vibration device and improve arousal effect.SOLUTION: A legged chair includes: a back pan F22; and an awakening device that has a respiration sensor for detecting a body signal of a sitting person, a vibration device 35 for providing vibration stimulation to the sitting person and a control device U1 for controlling the vibration device 35 to awaken the sitting person. The vibration device 35 is mounted to a metallic mount member 37 that is installed to the back pan F22.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a chair, and more particularly to a chair provided with a wake-up device for applying a stimulus to a seated person in the chair.

2. Description of the Related Art For the purpose of preventing occurrence of an accident during driving of a vehicle, there is known a technique of preventing a driver of a vehicle from lowering the arousal level.
For example, Patent Literature 1 discloses a technique of applying a vibration stimulus to a seated person using a vehicle seat including a heart rate sensor or a respiration sensor and an electric device such as a motor.
On the other hand, the technology of applying vibration stimulation to prevent a fall in arousal level, in other words, to prevent falling asleep, is not only for vehicle seats, but also for the purpose of efficiently studying and working and for the purpose of calling a specific person Can be used for chairs with legs.

For example, as a chair with legs used when calling a specific person in a theater or a conference room, Patent Literature 2 discloses a vibrating device having a motor inside a seat portion of a chair (in the literature, a vibrator is disclosed. Is disclosed.).
More specifically, the lower part of the vibrating device is supported via a compression spring, and the upper part of the vibrating device is disposed so as to touch the skin of the seat (in the document, referred to as a skin cover). There is disclosed a configuration in which a vibration stimulus is provided to a seated person via the occupant.

JP 2013-220810 A JP-A-7-322938

  In the chair with legs described in Patent Literature 2, since the vibration device is provided so as to be in contact with the skin made of synthetic fiber or the like, the transmission efficiency of vibration generated from the vibration device is low, and a high arousal effect is exhibited. It was difficult to do.

Furthermore, the range in which the vibration propagates is limited to the vicinity of the epidermis in contact with the vibration device, and in order to propagate the vibration over a wide range in order to further enhance the arousal effect, it is necessary to attach a large vibration device to the seat, It was costly.
Further, when the vibration amplitude is increased to increase the vibration stimulus, it is conceivable that an inconvenience may occur when the occupant is informed of the surrounding person by the vibration sound that the occupant is dozing.

In addition, when the vibration device is attached to the chair, the volume of the vibration device and the thickness of the chair may increase.
In this case, when a concave portion is formed in the chair and the vibration device is accommodated in the concave portion, the thickness of the chair can be suppressed by the concave portion, but it becomes difficult to maintain rigidity. was there.

The present invention has been made in view of such a problem, and an object of the present invention is to effectively apply a vibration stimulus to a seated person to enhance awakening effect.
Another object is to vibrate the backrest in a wide range.
Another object is to prevent people around you from knowing that you are dozing.
Yet another object is to maintain rigidity while preventing an increase in chair thickness.

  According to the chair according to the present invention, the subject has a backrest, a sensor that detects a body signal of a seated person, a vibration device that applies vibration stimulation to the seated person, and a control device that controls the vibration device. A chair provided with an awakening device for awakening the seated person, wherein the vibration device is solved by being attached to a metal part provided on the backrest.

  According to the above configuration, since the vibration device is attached to the metal portion, compared with the case where the vibration device is attached to the one made of a resin material, the vibration stimulus generated from the vibration device is applied to the seated person via the metal portion. Propagation can be performed effectively, and the arousal effect can be enhanced.

It is preferable that the backrest includes a back frame that comes into contact with the metal part, and that the backrest is provided with a vibration diffusion unit that diffuses vibrations widely.
According to the above configuration, the provision of the vibration diffusion unit allows the vibration stimulus transmitted from the vibration device to the metal unit to be effectively and widely diffused to the backrest, thereby increasing the arousal effect.

Further, it is preferable that the vibration diffusion portion is a rib formed so as to protrude from the periphery.
According to the above configuration, since the vibration diffusing portion is in the shape of a rib, the vibration stimulus can be diffused without using a separate member requiring a large number of mounting steps.

In addition, the backrest includes a backrest body having the metal portion, and at least a part of the vibration device is disposed on a front side of a line connecting an upper end portion and a lower end portion of a back surface of the backrest body. preferable.
According to the above configuration, at least a part of the vibration device is disposed on the front side of the line connecting the upper end portion and the lower end portion of the back of the backrest main body, and thus is disposed on the rear side of this line. As compared with the case where the vibration stimulus is performed, the vibration stimulus can be effectively transmitted to the occupant.

Preferably, the backrest is provided with a plurality of linear metal frames, and the vibrating device is disposed between the plurality of linear metal frames.
According to the above configuration, by disposing the vibration device between the plurality of metal frames, the vibration device can be protected by the metal frame.

Further, the vibrating device may be formed to be long on one side, and may be attached to the backrest such that the long direction is the vertical direction.
The range of contact with the back of the seated person is wide in the vertical direction. According to the above configuration, since the vibration device is attached so that the elongate direction is the vertical direction along the contact range, the vibration can be propagated in a wide range above and below the backrest. The awakening effect of the person can be improved.

The chair includes a seat portion, and a connection member that connects the seat portion and the backrest.The vibration device and the control device are connected by a harness, and the harness passes through the connection member. It is preferable to be arranged in a bent state in a normal state.
According to the above configuration, since the harness is provided through the inside of the connection member, it is possible to suppress the harness from protruding to the outside of the chair, and to prevent an external object from being caught by the harness. Harness can be protected.
Further, since the harness is arranged in a bent state, the harness can be extended when a tensile force is applied to the backrest by reclining or the like, so that the load applied to the harness can be released.

Further, it is preferable that the vibration device is provided at a lower portion of the backrest.
Since the lower part of the backrest faces the waist of the occupant who is less likely to separate depending on the posture of the occupant, according to the above configuration, the vibration device is provided at the lower part of the backrest, so that the occupant can be stimulated stably. Can be propagated, and the arousal effect can be improved.

Preferably, the backrest includes a backrest body having the metal part, and a cover attached to the backrest body, and the vibrating device is preferably covered with the cover.
According to the above configuration, since the vibrating device is covered with the cover, the effect of blocking sound generated when the vibration is generated is increased, and the operation of the vibrating device is suppressed from being recognized by people other than the occupant. it can.

In addition, it is preferable that a shielding plate that physically blocks a space is provided around the vibrating device in the backrest body or the cover.
According to the above configuration, since the shielding plate is provided around the vibration device, the sound insulation effect of the sound generated from the vibration device can be further enhanced.

Further, it is preferable that the backrest body or the cover includes a plurality of protrusions protruding from the periphery, and the vibration device is provided at a position avoiding the plurality of protrusions.
By providing a plurality of protrusions, the rigidity of the backrest can be increased, and since the vibration device is provided at a position avoiding the protrusions, an increase in the thickness of the backrest can be suppressed.

Further, the backrest body includes a back frame, a pad portion provided on a surface side of the back frame, and a skin covering the pad portion from a surface side, and the cover covering the vibrating device includes a cover for the vibration device. It is preferable that the terminal is attached to the back frame so as to sandwich the terminal and is in contact with the vibration device.
According to the above configuration, when the vibration device vibrates, the vibration propagates to the cover contacting the vibration device, the skin contacting the cover, and the occupant touching the skin. Therefore, the effect of awakening the occupant can be enhanced.

Further, it is preferable that the backrest body includes a resin portion formed over the entire backrest body in addition to the metal portion, and the vibration device is in contact with the metal portion and the resin portion.
According to the above configuration, since the vibration device is connected to the resin portion formed over the entire backrest main body in addition to the metal portion, the entire backrest main body, and consequently, the entire backrest can be vibrated. Can be increased.

Further, it is preferable that a battery that supplies power to the control device and the vibration device is provided, and the control device and the battery be provided above the vibration device.
According to the above configuration, it is possible to effectively utilize the space above the vibration device as a space for attaching the control device and the battery.

A battery that supplies power to the control device and the vibration device,
It is preferable that the control device and the battery are provided separately to the left and right of the vibration device.
According to the above configuration, it is possible to effectively utilize the left and right spaces of the vibration device as spaces for attaching the control device and the battery.
Furthermore, since the center of gravity of the backrest can be made lower than when the control device and the battery are arranged above the vibration device, it is possible to enhance the sense of stability of the chair.

Further, it is preferable that at least one of the vibration device, the control device, and the battery is disposed in a concave portion on a back surface of the backrest.
According to the above configuration, it is possible to suppress an increase in the thickness of the backrest due to the attachment of the vibration device, the control device, and the battery.

Further, it is preferable that the vibration device, the control device, and the battery are attached to a holding member to form a unit.
According to the above configuration, since the vibration device, the control device, and the battery are unitized by the holding member, the vibration device, the control device, and the battery can be easily attached to the backrest, and the wiring can be made compact. It becomes possible.

ADVANTAGE OF THE INVENTION According to this invention, the vibration stimulus which arises from a vibration apparatus can be propagated effectively, and awakening effect can be heightened.
Further, according to the present invention, the vibration stimulus can be effectively and widely diffused to the backrest, and the arousal effect can be enhanced.
Further, according to the present invention, the vibration stimulus can be diffused without using a separate member requiring a large number of mounting steps.
Further, according to the present invention, the vibration device can be protected by the metal frame.
Further, according to the present invention, vibration can be propagated in a wide range above and below the backrest, so that the effect of awakening the occupant can be improved.
Further, according to the present invention, the harness can be protected by preventing an external object from being caught on the harness, and the load applied to the harness can be released.
Further, according to the present invention, it is possible to stably transmit a stimulus to a seated person, and it is possible to improve the arousal effect.
Further, according to the present invention, it is possible to suppress the operation of the vibration device from being perceived by people other than the occupant in the vicinity.
Further, according to the present invention, it is possible to further enhance the sound insulation effect of the sound generated from the vibration device.
Further, according to the present invention, the rigidity of the backrest can be increased, and an increase in the thickness of the backrest can be suppressed.
Furthermore, according to the present invention, the entire backrest main body, and hence the entire backrest, can be vibrated, so that the awakening effect can be enhanced.
Further, according to the present invention, it is possible to effectively utilize the space above the vibration device as a space for mounting the control device and the battery.
Further, according to the present invention, it is possible to effectively utilize the left and right spaces of the vibration device as spaces for attaching the control device and the battery.
Furthermore, according to the present invention, since the center of gravity of the backrest can be made lower than in the case where the control device and the battery are arranged above the vibration device, it is possible to enhance the sense of stability of the chair. .
Further, according to the present invention, it is possible to suppress an increase in the thickness of the backrest due to the attachment of the vibration device, the control device, and the battery.
Further, according to the present invention, the vibration device, the control device, and the battery can be easily attached to the backrest, and the wiring can be made compact.

1 is an external view of a chair with legs according to an embodiment of the present invention. It is an exploded perspective view of a control device attached to a chair with legs, a battery, a holding cover, and the like. It is a perspective view which shows the holding cover of the state which hold | maintained the control apparatus and the battery. It is a figure which shows arrangement | positioning of the vibration device with respect to a backrest main body, and is a side view of the chair with legs. It is a figure showing the back of the backrest main part with which the vibration device was attached. It is a figure which shows the back surface of the backrest main body with which the vibration device, the control device, and the battery were attached. FIG. 9 is a diagram showing the back surface of the back body to which the control device and the battery are attached in another arrangement. It is a figure showing the back of the back frame which has a rib concerning other examples. FIG. 2 is a cross-sectional view along line IX-IX of FIG. It is a top view which shows the example of a structure which attaches the holding cover which hold | maintains a control apparatus and a battery to a back pan.

The present invention relates to a chair, and more particularly to a chair provided with a wake-up device (snap prevention device) having a vibration device.
The embodiments described below are merely examples for facilitating understanding of the present invention, and do not limit the present invention. That is, the shapes, dimensions, arrangements, and the like of the members described below can be changed and improved without departing from the gist of the present invention, and the present invention naturally includes equivalents thereof.
Hereinafter, a legged chair S according to an embodiment of the present invention, and an ECU 7, a battery 8, and a vibration device 35 provided in the legged chair S will be described with reference to the drawings.
In the following, the front-back direction indicates the front-back direction of the chair, and the left-right direction indicates the left-right direction of the chair, and is also referred to as the width direction of the chair.

First, the main configuration of the chair S with legs will be described mainly with reference to FIGS. Here, FIG. 1 is an external view of a chair S with legs according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of a control device U1, a battery 8, a holding cover 71, and the like attached to the chair S with legs. 3 is a perspective view showing the holding cover 71 holding the control device U1 and the battery 8, and FIG. 4 is a view showing the arrangement of the vibration device 35 with respect to the backrest main body 30, and is a side view of the chair S with legs. is there.
The legged chair S mainly includes a leg member F3, a cushion pan F21 attached to the leg member F3 to support the buttocks of the occupant, a back pan F22 serving as a backrest connected to the cushion pan F21, and awakening. And a device U.

The leg member F3 includes a leg portion F31 that branches into four, and a column cylinder F30 that is formed continuously with the leg portion F31, and is mainly formed of a resin material.
Further, in the present embodiment, the foot portion F31 is configured to branch into four, but may be configured to branch into three or more.

  The support cylinder F30 is fixed to the center of the foot F31 and extends upward. A post F21a, which will be described later, is passed through and fixed in the post tube F30.

  The cushion pan F21 corresponds to a seat according to the present invention. As shown in FIG. 4, the cushion pan F21 includes a pad portion F21e with a skin and a seat cover 36 attached to the back surface of the pad portion F21e with a skin. The holding cover 71 is attached to both sides of the back side of the cushion pan F21 in the width direction of the chair by tapping screws N1 (see FIG. 2) corresponding to fasteners.

  The pad portion F21e with a skin is composed of a pad portion (not shown) made of a cushion material such as urethane and a skin (not shown) covering the pad portion. A breath sensor 9 described later is arranged between the skin portion and the pad portion. Is established.

  The seat cover 36 is made of a resin material, and covers the entire back surface of the pad with skin F21e, including the holding cover 71 that holds the control device U1 and the battery 8 and is attached to the back of the pad with skin F21e. .

The back pan F22 is connected to a rear portion of the cushion pan F21 by a connection member 34, and is formed to extend substantially vertically upward from the cushion pan F21.
Here, the connection member 34 includes a resin portion 34a having a hollow portion 34b and two metal connection pipes F22c passing through the hollow portion 34b (see FIG. 5).
As shown in FIG. 4, the back pan F22 includes a backrest body 30 provided on the seated person side and a backrest cover 32 covering the entire back surface of the backrest body 30.
The backrest body 30 includes a resin-made back frame 30a as a base material, a pad portion 30b made of a cushion material provided on the front side of the back frame 30a in the front-rear direction of the chair, and a skin 30d covering the pad portion 30b. (See FIG. 9).
As shown in FIG. 1, a vibration device 35 is attached to the center of the backrest main body 30, and is covered with a backrest cover 32.

The vibration device 35, which will be described in detail later, is a component of the awakening device U, and adds vibration stimulation to the occupant according to a control signal of the ECU 7.
As shown in FIG. 4, the vibration device 35 is disposed at least partially on the front side of a plane A-A connecting the upper end and the lower end of the back surface of the backrest body 30. In other words, the vibration device 35 is attached to the backrest body 30 such that at least a part of the vibration device 35 is embedded in the back surface of the backrest body 30.
Since the vibration device 35 is attached to the backrest body 30 in this manner, the vibration device 35, which is a source of vibration, is disposed near the surface of the backrest body 30 that comes into contact with the occupant. Therefore, the vibration stimulus can be effectively transmitted to the occupant.

  Further, since the vibrating device 35 is covered with the backrest cover 32, the integrity of the vibrating device 35 can be improved, the appearance can be improved, and vibration noise can be prevented from leaking to the surroundings. can do.

<About Awakening Equipment>
Next, the awakening device U will be described.
The awakening device U according to the present embodiment mainly includes an ECU 7, a battery 8, a respiration sensor 9, and a vibration device 35.

  The vibration device 35 is a device including a so-called “vibration motor” including a known unbalanced mass motor.

The ECU 7 is a central function that comprehensively executes electric control. In this example, the ECU 7 has a function of driving and controlling the vibration device 35 based on a potential difference signal converted into a digital signal indicating a breathing interval.
The ECU 7 according to the present embodiment is a general-purpose ECU in terms of hardware, including a CPU, a ROM, a RAM, and the like for operation control.
The harness 11 connected to the respiration sensor 9 shown in FIG. 1, the harness 33 shown in FIG. 4 connected to the vibration device 35, and the illustrated Cable is connected.

In particular, the harness 33 passes through the hollow portion 34b of the connection member 34 and connects the vibration device 35 and the ECU 7 in the holding cover 71 in a bent state.
Since the harness 33 is provided through the hollow portion 34b of the connection member 34, the harness 33 is suppressed by the inner wall of the connection member 34, and the outward extension of the chair S with legs is suppressed.
Further, by connecting the vibration device 35 and the ECU 7 in a bent state, even if a tension is applied to the harness 33 due to the reclining of the back pan F22, the tension is generated by the amount of bending. Can be avoided. For this reason, disconnection of the harness 33 can be prevented.

The signal input from the respiration sensor 9 to the ECU 7 via the harness 11 is a potential difference signal converted into a digital signal by the signal processing circuit, and the signal output via the harness 33 drives the vibration device 35. Power to perform.
The RAM temporarily stores parameters including signals under arithmetic control and input / output signals, and functions as a storage unit that stores a potential difference signal converted into a digital signal and other signals.

The ROM stores a program executed by the CPU and a parameter of a predetermined value. For example, the ROM stores a reference value setting unit that sets a predetermined reference value, a determination unit that determines an awake state based on the reference value, and a vibration device 35. Is recorded as a program.
The driving unit has a function of driving the vibration device 35 by supplying power in accordance with an instruction from the CPU.
The instruction signal of the CPU is formed by calculating a signal from the respiration sensor 9.
In other words, it is configured such that the signal transmitted from the respiration sensor 9 determines the awake state of the seated person, and when it is determined that the occupant is not in the awake state, a signal for driving the vibration device 35 is transmitted from the CPU. I have. Note that a known configuration may be used as the configuration, and a heart rate sensor may be used instead of the respiration sensor 9.

  The ECU 7 constituting the awakening device U is attached to the lower surface side of the cushion pan F21 by a holding cover 71 as shown in FIG. 3, and the vibration device 35 is connected to the back surface of the back pan F22 as shown in FIG. That is, it is attached near the center of the surface on the side opposite to the seated person.

The battery 8 has a function of supplying electric power to the ECU 7 and the vibration device 35, and is formed in a plate shape in the present embodiment. The battery 8 is mounted below the control device U1 to be described later. The battery 8 is charged from a household power supply by connecting a charging cord (not shown). As the battery 8, a battery used for charging a smartphone or the like can be diverted.
In addition, the battery 8 is not limited to a power supply type, and may be a detachable type.

<Installation of ECU and battery>
Next, the attachment of the ECU 7 and the battery 8 will be described with particular reference to FIGS.
In the present embodiment, the ECU 7 is covered and supported by the base member 72 and the cover member 73, and furthermore, is held together with the battery 8 by the holding cover 71 and attached to the cushion pan F21. A unit in which the ECU 7, the base member 72, and the cover member 73 are combined is also referred to as a control device U1.

The holding cover 71 corresponds to a holding member according to the present invention. As shown in FIG. 4, a holding groove 71 a having an open upper portion and a substantially U-shaped vertical cross section, and both ends of an upper portion thereof are provided. And a pan mounting portion 71b extending outwardly and upwardly in a flange shape, and is formed of a resin material.
The pan mounting portion 71b is formed with a pan mounting hole 71c through which the tapping screw N1 is passed.

The base member 72 and the cover member 73 are frame members each having a substantially U-shaped vertical cross section.
Specifically, the base member 72 has a substantially U-shaped cross section, and extends in the front-rear direction longer than the length in the width direction.
On the other hand, the cover member 73 has a substantially U-shaped cross section, and extends in the width direction longer than the length in the front-rear direction.
These are stacked one on top of the other to form a storage space for the ECU 7 inside.
Then, the base member 72 and the cover member 73 are fastened by the fixing screw N2 in a state where the ECU 7 is stored, stacked on the battery 8, and held in the housing groove 71a.

  The control device U1 is stored in the groove of the holding cover 71 together with the battery 8. In this state, the holding cover 71 is fixed to the cushion pan F21 from the pan mounting holes 71c (four in this example) formed in the pan mounting part 71b (two in this example) by tapping screws N1. Attached.

Next, the attachment positions of the vibration device 35, the control device U1, and the battery 8 to the back pan F22 will be described mainly with reference to FIGS.
Here, FIG. 5 is a diagram showing a back surface of the backrest body 30 to which the vibration device 35 is attached, and FIG. 6 is a view showing a back surface of the backrest body 30 to which the vibration device 35, the control device U1, and the battery 8 are attached. FIG. 7 is a diagram showing the back surface of the backrest body 30 to which the control device U1 and the battery 8 are attached in another arrangement, and FIG. 8 is a back surface of a back frame 300 having ribs 30k and 30m according to another example. FIG.

  As shown in FIG. 5, the vibration device 35 is attached to a metal attachment member 37 attached to a lower portion of the back frame 30a so that the longitudinal direction is the up-down direction. The vibration device 35 is attached to the backrest main body 30 by the attachment member 37 being attached to the back frame 30 a constituting the backrest main body 30.

In particular, since the vibration device 35 is attached to the metal attachment member 37, the vibration generated from the vibration device 35 propagates to the occupant via the attachment member 37, thereby suppressing attenuation and effectively. Can be propagated to
Further, since the range of contact between the occupant and the back pan F22 is wide in the up-down direction, the vibration device 35 is mounted in a direction in which the longitudinal direction is the up-down direction, so that the range of contact with the occupant is wide. Vibration can be propagated.

  Further, the lower part of the back pan F22 often faces the waist of the seated person, and the waist of the seated person hardly separates depending on the posture. For this reason, since the vibration device 35 is provided below the back pan F22, it is possible to stably transmit the stimulus to the occupant, and the awakening effect can be improved.

  The attachment member 37 includes an upper end 37a, a middle part 37g, and a lower end 37b which are integrally formed, and is disposed in a recess 31a formed in the back frame 30a.

The upper end portion 37a and the lower end portion 37b are plate-shaped portions having a Ω-shaped horizontal cross section, and are formed symmetrically above and below the chair.
Specifically, the upper end portion 37a and the lower end portion 37b are formed with central portions 37c and 37e of a horizontal U-shaped cross section, and both end portions 37d extending outward from the respective ends of the central portions 37c and 37e in the width direction of the chair. , 37f.
The mounting member 37 is fixed to the back surface of the back frame 30a by tapping screws 38 at both end portions 37d and 37f.

The middle portion 37g is a portion to which the vibration device 35 is attached, and is formed continuously with the upper end of the central portion 37c in the upper end portion 37a and the lower end of the central portion 37e in the lower end portion 37b, and extends vertically along the back frame 30a. It is a member having a U-shaped vertical cross section.
The middle portion 37g is formed at intervals from both ends in the width direction of the chair at the center portions 37c and 37e of the upper end portion 37a and the lower end portion 37b, and is formed shorter in the chair width direction than the center portions 37c and 37e. .

The two connecting pipes F22c are respectively disposed between the central portion 37e and each of the center portions 37e of the central portions 37c and 37e of the upper end portion 37a and the lower end portion 37b thus formed, and It is welded to the mounting member 37.
That is, the vibration device 35 attached to the middle portion 37g is protected by the two connecting pipes F22c on both sides in the width direction of the chair. The connecting pipe F22c corresponds to a linear metal frame according to the present invention.

On the back surface of the back frame 30a, a lattice-shaped rib 30j is formed to protrude rearward in the front-rear direction of the chair in a portion other than the central concave portion 31a.
By forming the ribs 30j in this manner, it is possible to reduce the weight more than a rib formed without any space.
In addition, the rib 30j can suppress a decrease in rigidity due to the concave portion 31a formed for disposing the vibration device 35 and the backrest body 30.
Further, the vibration generated from the vibration device 35 can be transmitted to the entire back frame 30a by the ribs 30j formed entirely in a lattice shape.

Further, when the backrest cover 32 is attached to the back frame 30a, a plurality of closed spaces are formed between the rib 30j and the backrest cover 32, so that the propagation of sound waves due to the vibration generated by the vibration device 35 is prevented. It becomes possible to cut off.
Therefore, it is possible to prevent a person around the legged chair S from noticing that the vibration device 35 is operating by sound.

In the above description, the control device U1 and the battery 8 are described as being attached to the back surface of the cushion pan F21. However, the present invention is not limited to such a configuration. For example, as shown in FIG. It may be attached to the back of 30a, that is, attached to the back pan F22.
In particular, the control device U1 and the battery 8 in the back frame 30a are to be mounted above the mounting member 37, and the concave portions 31b and 31c may be formed in the mounting portions. Note that the bottom surfaces of the concave portions 31b and 31c are formed larger than the contact surfaces of the control device U1 and the battery 8.
By doing so, the space above the mounting member 37 mounted on the lower part can be effectively used as a mounting space for the control device U1 and the battery 8.

  If there is a space for mounting the control device U1 and the battery 8, it is preferable that the control device U1 and the battery 8 be arranged so as to sandwich the mounting member 37 in the width direction of the chair as shown in FIG.

  According to such a configuration, since the center of gravity of the back pan F22 can be located below the control device U1 and the battery 8, the weight balance of the legged chair S can be increased, and the legged chair S Can be hard to fall.

Further, in the above-described embodiment, the description has been given as including the grid-shaped rib 30j, but the present invention is not limited to such a configuration.
For example, as shown in FIG. 8, ribs 30k extending radially from the vicinity of the attachment member 37 to which the vibration device 35 is attached may be formed on the back frame 300. Further, it is more preferable that an arc-shaped rib 30m extending in a direction intersecting the rib 30k and connecting the rib 30k is formed on the back frame 300.
According to the above configuration, the vibration generated from the vibration device 35 can be propagated to the entire back frame 300 by the ribs 30k extending radially, and the ribs 30k are connected to each other by the ribs 30m. Propagation can be made to the entire back frame 300 without bias.

Further, in the above embodiment, the vibration device 35 is described as being mounted on the mounting member 37 corresponding to the metal part. However, the member that contacts the vibration device 35 is not only the mounting member 37 but also the back frame. 30a may be directly contacted.
For example, a through-hole may be formed in a part of the attachment member 37, and a part of the back frame 30a may be inserted through the through-hole to make the vibrating device 35 touch.
In this way, the vibration device 35 touches the mounting member 37 which is a metal part to increase the vibration stimulus, and by touching the back frame 30a, the efficiency of the propagation of the vibration to the entire back frame 30a is improved. Can be enhanced.

(Modification)
Next, a configuration according to a modified example will be described with reference to FIGS. 9 and 10. Here, FIG. 9 shows the arrangement of the vibration device 35 in the back pan F22, and is a cross-sectional view taken along the line IX-IX of FIG. 1. FIG. 10 shows the holding of the vibration device 35, the control device U1, and the battery 8 in the back pan F22. It is a top view which shows the example of a structure which attaches the cover 74.

When attaching the backrest cover 32 to the back frame 30a, as shown in FIG. 9, the backrest cover 32 is held so that the peripheral portion of the pad portion 30b and the terminal 30e of the skin 30d are sandwiched between the back frame 30a. It is preferable that the backrest cover 32 be brought into contact with the mounting and vibration device 35.
According to such a configuration, as indicated by arrows in FIG. 9, a route R1 transmitted through the mounting member 37, the back frame 30a, the pad portion 30b, and the skin 30d as a propagation route of the vibration generated from the vibration device 35. A route R2 transmitted through the backrest cover 32, the skin 30d, and the pad portion 30b can be formed. By doing so, the propagation efficiency of vibration can be further increased.

The attachment of the control device U1 and the battery 8 to the back pan F22 is not limited to those individually attached as shown in FIGS.
For example, similar to the configuration in which the control device U1 and the battery 8 are unitized and attached to the cushion pan F21 shown in FIG. 4 by the holding cover 71, as shown in FIG. You may make it attach using.
That is, if the thickness of the back pan F22 in the front-rear direction does not matter, the vibration device 35, the control device U1, and the battery 8 may be collectively disposed in the front and rear.
By doing so, the wiring between the vibration device 35, the control device U1, and the battery 8 can be shortened, and attachment to the back pan F22 is facilitated.

F21 Cushion pan (seat)
F21a Prop F21e Pad with skin F22 Back pan (back)
F22c Connecting pipe (linear metal frame)
F3 Leg member F30 Support tube F31 Foot N1 Tapping screw (fastening)
N2 Fixing screws R1, R2 Root S Chair with legs U Awakening device U1 Control device 11 Harness 30 Backrest body 30a, 300 Back frame 30b Pad portion 30c Resin portion 30d Skin 30e Terminal 30j, 30k, 30m Rib (vibration diffusion portion, shielding plate , Protrusion)
31a, 31b, 31c, 31d, 31e Recess 32 Backrest cover 33 Harness 34 Connecting member 34a Resin 34b Hollow 35 Vibration device 36 Seat cover 37 Mounting member (metal part)
37a Upper end part 37b Lower end part 37c Central part 37d Both end parts 37e Central part 37f Both end parts 37g Middle part 38 Tapping screw 7 ECU
71, 74 Holding cover (holding member)
71a Receiving groove 71b Pan attachment part 71c Pan attachment hole 72 Base member 73 Cover member 8 Battery 9 Respiration sensor

Claims (17)

With the backrest,
A chair comprising: a sensor that detects a body signal of a seated person; a vibration device that applies vibration stimulation to the seated person; and a control device that controls the vibration device, and an awakening device that awakens the seated person. ,
The chair is characterized in that the vibration device is attached to a metal part provided on the backrest. The backrest includes a back frame that contacts the metal part,
The chair according to claim 1, wherein the back frame is provided with a vibration diffusing unit that diffuses vibration widely to the backrest.   The chair according to claim 2, wherein the vibration diffusion portion is a rib formed so as to protrude from the periphery. The backrest includes a backrest body having the metal part,
4. The device according to claim 1, wherein at least a part of the vibration device is disposed on a front side of a line connecting an upper end portion and a lower end portion of a back surface of the backrest body. 5. Chair. The backrest is provided with a plurality of linear metal frames,
The chair according to claim 1, wherein the vibration device is disposed between the plurality of linear metal frames.   6. The vibration device according to claim 1, wherein the vibration device is formed to be long on one side, and is attached to the backrest such that a long direction is a vertical direction. 7. Chair. A seat for the chair,
A connection member for connecting the seat and the backrest,
The vibration device and the control device are connected by a harness,
The chair according to any one of claims 1 to 6, wherein the harness is arranged so as to pass through the connection member and bend in a normal state.   The chair according to any one of claims 1 to 7, wherein the vibration device is provided at a lower part of the backrest. The backrest includes a backrest body having the metal part, and a cover attached to the backrest body,
The chair according to any one of claims 1 to 8, wherein the vibration device is covered with the cover.   The chair according to claim 9, wherein a shielding plate that physically blocks a space is provided around the vibrating device in the backrest body or the cover. The backrest body or the cover includes a plurality of protrusions protruding from the periphery,
The chair according to claim 9, wherein the vibration device is provided at a position avoiding the plurality of protrusions. The backrest body includes a back frame, a pad portion provided on the surface side of the back frame, and a skin covering the pad portion from the surface side,
The cover according to any one of claims 9 to 11, wherein the cover that covers the vibration device is attached to the back frame so as to sandwich a terminal of the skin, and is in contact with the vibration device. Chair. The backrest body includes a resin portion formed over the entire backrest body in addition to the metal portion,
The chair according to claim 9, wherein the vibration device is in contact with the metal portion and the resin portion. A battery that supplies power to the control device and the vibration device,
The chair according to any one of claims 1 to 13, wherein the control device and the battery are provided above the vibration device. A battery that supplies power to the control device and the vibration device,
The chair according to any one of claims 1 to 14, wherein the control device and the battery are provided separately to the left and right of the vibration device.   The chair according to claim 14, wherein at least one of the vibration device, the control device, and the battery is disposed in a recess on a back surface of the backrest.   The chair according to any one of claims 14 to 16, wherein the vibration device, the control device, and the battery are unitized by being attached to a holding member.

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