JP6565282B2 - Chair - Google Patents

Description

  The present invention relates to a chair, and more particularly to a chair provided with a wake-up device that gives a stimulus to a seated person of the chair.

For the purpose of preventing the occurrence of an accident during driving of a vehicle, a technique for preventing a decrease in arousal level of a vehicle driver is known.
For example, Patent Literature 1 discloses a technique for applying a vibration stimulus to a seated person using a vehicle seat including an electric device such as a heart rate sensor or a respiration sensor and a motor.
On the other hand, in order to prevent a decrease in arousal level, in other words, the technology that gives vibration stimulation to prevent falling asleep, in addition to the vehicle seat, the purpose of studying and working efficiently, and the purpose of calling a specific person Can be used for legged chairs and the like.

For example, as a chair with legs used for calling a specific person in a theater or a conference room, Patent Document 2 discloses a vibration device having a motor inside a seat portion of the chair (in the same document, a vibrator A chair with legs is disclosed.
More specifically, the lower portion of the vibration device is supported via a compression spring, and the upper portion of the vibration device is disposed so as to touch the skin of the seat (described as a skin cover in the same document). The structure which gives a vibration stimulus to a seated person via is disclosed.

JP 2013-220810 A Japanese Unexamined Patent Publication No. 7-322938

  In the chair with legs described in Patent Document 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 that contacts the vibration device, and in order to propagate the vibration over a wide range in order to enhance the awakening effect, it is necessary to attach a large vibration device to the seat, It was costly.
In addition, when the vibration amplitude is increased in order to increase the vibration stimulus, it may be inconvenienced by the fact that the occupant is in a dozing state by knowing the vibration sound to the surrounding people.

Moreover, when attaching a vibration apparatus to a chair, it is possible that the volume of a vibration apparatus and the thickness of a chair become large.
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 problems, and an object of the present invention is to effectively impart a vibration stimulus to a seated person to enhance the awakening effect.
Another purpose is to vibrate the backrest over a wide range.
Another purpose is to prevent others from knowing that they are asleep.
Yet another object is to maintain rigidity while preventing an increase in chair thickness.

The object is achieved, according to the chair of the present invention, organic a sensor for detecting a backrest, a body signal of the seated person, a vibration device applying vibratory stimulation to the seated person, and a controller for controlling the vibration device A wake-up device that wakes up the seated person, wherein the vibration device is attached to a metal part provided on the backrest, and the backrest includes a backrest body having the metal part, A cover attached to a backrest body, the vibration device is covered with the cover, and the backrest body or the cover includes a plurality of protrusions protruding from the periphery, and the vibration device includes the plurality of protrusions. It is solved by being provided at a position avoiding the part .

According to the above configuration, since the vibration device is attached to the metal part, the vibration stimulus generated from the vibration device is passed to the seated person via the metal part as compared with the case where the vibration device is attached to a resin material. It can be propagated effectively and the arousal effect can be enhanced.
In addition, according to the above configuration, since the vibration device is covered with the cover, an effect of blocking sound generated when the vibration is generated is enhanced, and the operation of the vibration device is recognized by surrounding people other than the seated person. Can be suppressed.
Moreover, the rigidity of a backrest can be improved by providing a some protrusion part, and the increase in the thickness of a backrest can be suppressed because the vibration apparatus is provided in the position which avoided the protrusion part.

The subject includes a backrest, a sensor that detects a body signal of the seated person, a vibration device that applies vibration stimulation to the seated person, and a control device that controls the vibration device, and awakens the seated person. The vibration device is attached to a metal part provided on the backrest, and the backrest includes a backrest body having the metal part and a cover attached to the backrest body. The vibration device is covered with the cover, and 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, and the vibration The cover covering the device is also solved by being attached to the back frame so as to sandwich the terminal of the epidermis and contacting the vibration device.
According to the above configuration, when the vibration device vibrates, the vibration propagates to the cover that contacts the vibration device, the skin that contacts the cover, and the seated person that touches the skin. For this reason, the awakening effect of the seated person can be enhanced.

The subject includes a backrest, a sensor that detects a body signal of the seated person, a vibration device that applies vibration stimulation to the seated person, and a control device that controls the vibration device, and awakens the seated person. The vibration device is attached to a metal part provided on the backrest, and the backrest includes a backrest body having the metal part and a cover attached to the backrest body. The vibration device is covered with the cover, and the backrest body includes a resin portion formed over the backrest body in addition to the metal portion, and the vibration device includes the metal portion and the resin. It is also solved by touching the part.
According to the above configuration, since the vibration device is connected to the resin portion formed over the entire backrest body in addition to the metal portion, the entire backrest body, and thus the entire backrest, can be vibrated. Can be increased.

Preferably, the backrest includes a back frame that contacts the metal portion, and a vibration diffusion portion that diffuses vibrations widely is provided on the backrest.
According to the above configuration, the vibration diffusion unit is provided, so that the vibration stimulus transmitted from the vibration device to the metal unit can be effectively diffused widely on the backrest, and the awakening effect can be enhanced.
The vibration diffusion portion is preferably a rib formed so as to protrude from the periphery.
According to the said structure, a vibration irritation | stimulation part can be spread | diffused without using another member which requires attachment man-hour because a vibration diffusion part is rib shape.
Further, the backrest includes a backrest body having the metal part, and at least a part of the vibration device is disposed in front of a line connecting the upper end portion and the lower end portion of the 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 surface of the backrest body, so that the vibration device is disposed behind the line. Compared with the case where it is, it becomes possible to propagate a vibration stimulus to a seated person effectively.

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

Moreover, the said vibration apparatus is formed in the elongate on one side, and may be attached to the said backrest so that a elongate direction may become an up-down direction.
The range of contact with the seated person's back is wide in the vertical direction. According to the above configuration, since the vibration device is attached so that the longitudinal direction is the vertical direction along the contact range, vibration can be propagated in a wide range above and below the backrest. The awakening effect of the person can be improved.

A seat part of the chair, and a connection member that connects the seat part and the backrest, and the vibration device and the control device are connected by a harness, and the harness passes through the connection member. It is preferable that they are arranged in a bent state in a normal state.
According to the above configuration, since the harness is disposed through the connection member, it is possible to suppress the harness from protruding to the outside of the chair, and to suppress the external object from being caught on the harness, The harness can be protected.
Furthermore, since the harness is disposed in a bent state, the load applied to the harness can be released by being able to extend when a tensile force is applied to the harness, for example, by reclining the backrest.

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 lower back of the seated person who is less likely to leave depending on the posture of the seated person, according to the above configuration, the vibration device is provided at the lower part of the backrest, so that the seated person can be stably stimulated. Can be propagated and the awakening effect can be improved.

Moreover, it is preferable that a battery for supplying electric power to the control device and the vibration device is provided, and the control device and the battery are provided above the vibration device.
According to the said structure, it becomes possible to utilize effectively the space above a vibration apparatus as a space which attaches a control apparatus and a battery.

A battery for supplying power to the control device and the vibration device;
The control device and the battery are preferably provided so as to be distributed to the left and right of the vibration device.
According to the said structure, it becomes possible to utilize effectively the space on either side of a vibration apparatus as a space which attaches a control apparatus and a battery.
Furthermore, compared to the case where the control device and the battery are disposed above the vibration device, the center of gravity of the backrest can be lowered, so that the stability of the chair can be enhanced.

In addition, it is preferable that 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.
According to the said structure, the increase in the thickness of the backrest by attaching a vibration apparatus, a control apparatus, and a battery can be suppressed.

The vibration device, the control device, and the battery are preferably attached to a holding member and unitized.
According to the above configuration, the vibration device, the control device, and the battery are unitized by the holding member, so that 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.
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 .
According to the said structure, the rigidity of a backrest can be improved by providing a some protrusion part, and the thickness increase of a backrest can be suppressed because the vibration apparatus is provided in the position which avoided the protrusion part. .
Moreover, the said backrest main body is provided with the resin part formed over the whole said backrest main body other than the said metal part, and it is preferable when the said vibration apparatus is contacting the said metal part and the said resin part.
According to the above configuration, since the vibration device is connected to the resin portion formed over the entire backrest body in addition to the metal portion, the entire backrest body, and thus the entire backrest, can be vibrated. Can be increased.

ADVANTAGE OF THE INVENTION According to this invention, the vibration stimulus which arises from a vibration apparatus can be propagated effectively, and an arousal effect can be heightened.
Further, according to the present invention, the vibration stimulus can be effectively diffused widely on the backrest, and the arousal effect can be enhanced.
Moreover, according to this invention, a vibration stimulus can be spread | diffused, without using another member which requires a mounting man-hour.
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 awakening effect of the seated person can be improved.
Moreover, according to this invention, it can suppress that an external thing is caught in a harness, can protect a harness, and can release the load added to a harness.
Furthermore, according to the present invention, it is possible to stably transmit the stimulus to the seated person, and the awakening effect can be improved.
Moreover, according to this invention, it can suppress that the operation | movement of a vibration apparatus is recognized by the people other than a seated person.
Furthermore, according to the present invention, the sound insulation effect of the sound generated from the vibration device can be further enhanced.
Moreover, according to this invention, the rigidity of a backrest can be improved and the increase in the thickness of a backrest can be suppressed.
Furthermore, according to the present invention, the entire backrest body, and thus the entire backrest, can be vibrated, so that the awakening effect can be enhanced.
Further, according to the present invention, the space above the vibration device can be effectively used as a space for mounting the control device and the battery.
Moreover, according to this invention, it becomes possible to use effectively the space on either side of a vibration apparatus as a space which attaches a control apparatus and a battery.
Furthermore, according to the present invention, since the center of gravity of the backrest can be made downward as compared with the case where the control device and the battery are disposed above the vibration device, it becomes possible to enhance the stability of the chair. .
Moreover, according to this invention, the increase in the thickness of the backrest by attaching a vibration apparatus, a control apparatus, and a battery can be suppressed.
Furthermore, 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.

It is an external view of the chair with a leg concerning the embodiment of the present invention. It is a disassembled perspective view, such as a control apparatus attached to a chair with a leg, a battery, and a holding cover. 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 apparatus with respect to a backrest main body, and is a side view of a chair with a leg. It is a figure which shows the back surface of the backrest main body to which the vibration apparatus was attached. It is a figure which shows the back surface of the backrest main body to which the vibration apparatus, the control apparatus, and the battery were attached. It is a figure which shows the back surface of the backrest main body in which the control apparatus and the battery were attached by other arrangement | positioning. It is a figure which shows the back surface of the back frame which has the rib which concerns on another example. It is IX-IX sectional drawing of FIG. 1 which shows arrangement | positioning of the vibration apparatus in a back pan. It is a top view which shows the structural example 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 an awakening device (a dozing prevention device) having a vibration device.
The embodiment described below is merely an example for facilitating the understanding of the present invention, and does not limit the present invention. That is, the shape, dimensions, arrangement, and the like of the members described below can be changed and improved without departing from the spirit of the present invention, and the present invention naturally includes equivalents thereof.
Hereinafter, the legged chair S according to an embodiment of the present invention, and the ECU 7, the battery 8, and the vibration device 35 provided in the legged chair S will be described with reference to the drawings.
In the following description, the front-rear direction indicates the front-rear direction of the chair, and the left-right direction is also referred to as the width direction of the chair, indicating the left-right direction of the chair.

First, the main configuration of the legged chair S will be described with reference mainly to FIGS. Here, FIG. 1 is an external view of a legged chair S 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 legged chair S. 3 is a perspective view showing the holding cover 71 in a state where the control device U1 and the battery 8 are held, and FIG. 4 is a view showing the arrangement of the vibration device 35 with respect to the backrest body 30, and is a side view of the legged chair S. is there.
The legged chair S mainly includes a leg member F3, a cushion pan F21 attached to the leg member F3 and supporting the buttocks of the seated person, a back pan F22 that is a backrest connected to the cushion pan F21, and awakening. It is comprised from the apparatus U.

The leg member F3 is composed of a leg part F31 branched into four parts and a column cylinder F30 continuously formed on the leg part F31, and is mainly made of a resin material.
Further, in the present embodiment, the foot F31 is configured to branch into four, but may be configured to branch into three or more.

  The column cylinder F30 is fixed at the center of the foot part F31 and extends upward. In a column cylinder F30, a column F21a described later is passed and fixed.

  The cushion pan F21 corresponds to a seat portion according to the present invention. As shown in FIG. 4, the cushion pan F <b> 21 includes a pad portion F <b> 21 e with a skin and a seat cover 36 attached to the back surface of the pad portion F <b> 21 e with a skin. A holding cover 71 is attached to both outer portions of the back surface of the cushion pan F21 in the width direction of the chair by a tapping screw N1 (see FIG. 2) corresponding to a fastener.

  The pad portion with skin F21e is composed of a pad portion (not shown) made of a cushion material such as urethane and a skin skin (not shown) that covers the pad portion, and a breathing sensor 9 described later is arranged between the skin and the pad portion. It is installed.

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

The back pan F22 is connected to the rear portion of the cushion pan F21 by the connecting 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 connecting pipes F22c passing through the hollow portion 34b (see FIG. 5).
As shown in FIG. 4, the back pan F <b> 22 includes a backrest main body 30 provided on the seated person side, and a backrest cover 32 that covers the entire back surface of the backrest main 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 in the front-rear direction of the chair of the back frame 30a, and an outer 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 body 30 and is covered with a backrest cover 32.

Although details will be described later, the vibration device 35 is a component of the awakening device U, and applies vibration stimulation to the seated person in accordance with a control signal from the ECU 7.
As shown in FIG. 4, the vibration device 35 is disposed at least partially on the front side of the plane AA connecting the upper end portion and the lower end portion of the back surface of the backrest main body 30. In other words, the vibration device 35 is attached to the backrest main body 30 so that at least a part of the vibration device 35 is embedded in the back surface of the backrest main body 30.
Since the vibration device 35 is attached to the backrest main body 30 in this way, the vibration device 35 that is a generation source of vibration is disposed near the surface side of the backrest main body 30 that contacts the seated person. Therefore, the vibration stimulus can be effectively transmitted to the seated person.

  In addition, since the vibration device 35 is covered by the back cover 32, the maintainability of the vibration device 35 can be improved, the appearance can be improved, and further, 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” made of 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, which includes a CPU, ROM, RAM, and the like for arithmetic control.
A harness 11 connected to the respiration sensor 9 shown in FIG. 1, a harness 33 shown in FIG. 4 connected to the vibration device 35, and a battery 8 are connected to a connection port of a connector (not shown) provided in the ECU 7. Cable is connected.

In particular, the harness 33 passes through the hollow portion 34 b 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 disposed through the hollow portion 34b of the connection member 34, the harness 33 is restrained by the inner wall of the connection member 34 and the outward extension of the legged chair S is restrained.
Further, since the vibration device 35 and the ECU 7 are connected in a bent state, even if a tensile force is applied to the harness 33 due to the reclining of the back pan F22, a tensile force is generated by the amount of the bending. Can be avoided. For this reason, it is possible to prevent the harness 33 from being disconnected.

The signal input to the ECU 7 from the respiration sensor 9 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. It is power to do.
The RAM temporarily stores parameters including signals under calculation control and input / output signals, and functions as a storage unit that stores potential difference signals converted to digital signals and other signals.

The ROM stores a program executed by the CPU and a parameter of a predetermined value. For example, a reference value setting unit that sets a predetermined reference value, a determination unit that determines a wakefulness based on the reference value, and the vibration device 35 A drive unit or the like for driving is recorded as a program.
The drive unit has a function of driving the vibration device 35 by supplying power in accordance with an instruction from the CPU.
The CPU instruction signal is formed by calculating a signal from the respiration sensor 9.
That is, the signal transmitted from the respiration sensor 9 is used to determine the awake state of the seated person, and when it is determined that the seat is not in the awake state, a signal for driving the vibration device 35 is transmitted from the CPU. Yes. In addition, the said structure should just use a well-known structure, and you may make it use a heart rate sensor instead of the respiration sensor 9. FIG.

  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 includes a back surface of the back pan F22, as shown in FIG. That is, it is attached in the vicinity of the center of the opposite surface on the seated person side.

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 attached to be overlapped below a control device U1 described later. The battery 8 is charged from a household power source by connecting a charging cord (not shown). And the battery 8 can divert the battery used for charge, such as a smart phone.
The battery 8 is not limited to a power supply type, and may be a detachable type.

<ECU and battery installation>
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 is further held together with the battery 8 by the holding cover 71 and attached to the cushion pan F <b> 21. Note that 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, the holding groove 71a having an open upper part and a substantially U-shaped vertical cross section, and both ends of the upper part thereof. And a pan mounting portion 71b extending in a flange shape from the outside to the upper side, and is formed of a resin material.
A pan mounting hole 71c through which the tapping screw N1 is passed is formed in the pan mounting portion 71b.

The base member 72 and the cover member 73 are frames 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 width direction length.
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 above the other to form a storage space for the ECU 7.
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 concave groove 71a.

  The control device U <b> 1 is stored in the groove of the holding cover 71 together with the battery 8. In this state, the holding cover 71 is fastened to the cushion pan F21 by the tapping screws N1 from the pan mounting holes 71c (four in this example) formed in the pan mounting portion 71b (two in the present example). 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 with reference mainly to FIGS.
Here, FIG. 5 is a view showing the back surface of the backrest main body 30 to which the vibration device 35 is attached, and FIG. 6 is a back view of the backrest main body 30 to which the vibration device 35, the control device U1 and the battery 8 are attached. FIGS. 7 and 7 are views showing the back surface of the backrest main body 30 to which the control device U1 and the battery 8 are attached in another arrangement, and FIG. 8 is the back surface of the back frame 300 having ribs 30k and 30m according to another example. FIG.

  As shown in FIG. 5, the vibration device 35 is attached on a metal attachment member 37 attached to the lower portion of the back frame 30 a in a direction in which the longitudinal direction is the vertical direction. The vibration device 35 is attached to the backrest main body 30 by attaching the attachment member 37 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 seated person via the attachment member 37, so that the damping is effectively suppressed. Can be propagated to.
Further, since the contact range between the seated person and the back pan F22 is wide in the vertical direction, the vibration device 35 is attached in a direction in which the longitudinal direction is the vertical direction, so that the contact range with the seated person is wide. It becomes possible to propagate vibration.

  Further, the lower part of the back pan F22 often faces the seated person's waist, and the seated person's waist is less likely to leave depending on the posture. For this reason, since the vibration device 35 is provided in the lower part of the back pan F22, it is possible to stably transmit the stimulus to the seated person and to improve the awakening effect.

  The attachment member 37 includes an upper end portion 37a, a middle portion 37g, and a lower end portion 37b that 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-like portions having a horizontal cross section formed in an Ω shape, and are formed symmetrically on the upper and lower sides of the chair.
Specifically, the upper end portion 37a and the lower end portion 37b include a central portion 37c, 37e having a horizontal U-shaped cross section, and both end portions 37d extending outward from the respective ends of the central portions 37c, 37e in the width direction of the chair. , 37f.
The attachment 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 part 37g is a part to which the vibration device 35 is attached, and is formed continuously from the upper end of the central part 37c in the upper end part 37a and the lower end of the central part 37e in the lower end part 37b, and extends vertically along the back frame 30a. This is a U-shaped member having a vertical cross section.
The middle portion 37g is formed at a distance from both ends in the width direction of the chair of the central portions 37c and 37e of the upper end portion 37a and the lower end portion 37b, and is formed shorter in the width direction of the chair than the central portions 37c and 37e. .

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

Further, ribs 30j formed in a lattice shape are formed on the back surface of the back frame 30a so as to protrude rearward in the front-rear direction of the chair at portions other than the central recess 31a.
Since the ribs 30j are formed in this way, it is possible to reduce the weight as compared with those formed so as not to have a space completely.
Moreover, the rib 30j can suppress a decrease in rigidity due to the recess 31a formed to dispose the vibration device 35 and the backrest main body 30.
Furthermore, the vibration generated from the vibration device 35 can be propagated to the entire back frame 30a by the ribs 30j formed in a lattice shape.

Furthermore, in a state where the back cover 32 is attached to the back frame 30a, a plurality of closed spaces are formed between the ribs 30j and the back cover 32, so that propagation of sound waves due to vibration generated by the vibration device 35 is prevented. It becomes possible to block.
For this reason, it can suppress that the person around the chair S with a leg recognizes that the vibration apparatus 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. You may make it attach to the back surface of 30a, ie, the back pan F22.
In particular, the control device U1 and the battery 8 in the back frame 30a are attached above the attachment member 37, and the recesses 31b and 31c may be formed in the attachment portions. The bottom surfaces of the recesses 31b and 31c are formed larger than the contact surfaces of the control device U1 and the battery 8.
By doing in this way, the space above the attachment member 37 attached to the lower part can be effectively utilized as the attachment space for the control device U1 and the battery 8.

  Further, if there is a space for attaching the control device U1 and the battery 8, it is preferable that the control device U1 and the battery 8 are disposed so as to sandwich the attachment 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 placed 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 increased. Can be hard to fall.

Moreover, in the said embodiment, although demonstrated as a thing provided with the grid | lattice-like rib 30j, this invention is not limited to such a structure.
For example, as illustrated in FIG. 8, ribs 30 k that extend 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. Furthermore, it is more preferable that the back frame 300 is formed with arc-shaped ribs 30m that extend in a direction intersecting the ribs 30k and connect the ribs 30k.
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 that extend radially, and the rib 30k is connected by the ribs 30m. It can propagate to the entire back frame 300 without bias.

Moreover, in the said embodiment, although demonstrated that the vibration apparatus 35 was attached on the attachment member 37 corresponded to a metal part, the member which contacts the vibration apparatus 35 is not only the attachment member 37 but a back frame. You may make it contact 30a directly.
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 into the through hole so that the vibration device 35 can be touched.
By doing in this way, the vibration device 35 touches the attachment member 37 which is a metal part to enhance vibration stimulation, and touching the back frame 30a increases the efficiency of propagation of vibration to the back frame 30a. Can be increased.

(Modification)
Next, a configuration according to the modification will be described with reference to FIGS. 9 and 10. 9 is a cross-sectional view taken along the line IX-IX in FIG. 1 showing the arrangement of the vibration device 35 in the back pan F22. FIG. 10 is a view of holding 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 structural example which attaches the cover 74. FIG.

When the backrest cover 32 is attached to the back frame 30a, as shown in FIG. 9, the backrest cover 32 is placed 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. The backrest cover 32 is preferably brought into contact with the attachment and vibration device 35.
According to such a configuration, as a propagation route of vibration generated from the vibration device 35, as indicated by an arrow in FIG. 9, a route R1 transmitted through the attachment member 37, the back frame 30a, the pad portion 30b, and the skin 30d, and The back cover 32, the skin 30d, and the route R2 transmitted through the pad portion 30b can be formed. By doing in this way, the propagation efficiency of a vibration can be raised more.

Moreover, attachment to the back pan F22 about the control apparatus U1 and the battery 8 is not limited to what is attached individually as shown in FIG.6 and FIG.7.
For example, as shown in FIG. 10, a holding cover 74 that additionally holds the vibration device 35 as shown in FIG. 10 as in the configuration in which the control device U1 and the battery 8 are unitized and attached to the cushion pan F21 shown in FIG. You may make it attach using.
That is, if the thickness of the back pan F22 in the front-rear direction is not a problem, the vibration device 35, the control device U1, and the battery 8 may be disposed together in the front-rear direction.
If it does in this way, wiring with vibration device 35, control device U1, and battery 8 can be shortened, and attachment to back pan F22 will become easy.

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

Claims (17)

Backrest,
A sensor for detecting a body signal of the seated person, a vibration device applying vibratory stimulation to the seated person, and waking device and a controller for controlling the vibration device to wake the seated person, chair comprising There,
The vibration device is attached to a metal part provided on the backrest ,
The backrest includes a backrest body having the metal part, and a cover attached to the backrest body,
The vibration device is covered with the cover;
The backrest body or the cover includes a plurality of protrusions protruding from the periphery,
The vibration device is provided at a position avoiding the plurality of protrusions . 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 awakens the seated person. There,
The vibration device is attached to a metal part provided on the backrest,
The backrest includes a backrest body having the metal part, and a cover attached to the backrest body,
The vibration device is covered with the cover;
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,
Wherein said cover covering the vibration device is attached to the back frame which sandwich the terminal of the epidermis, chair child you characterized in that in contact with the vibrating device. 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 awakens the seated person. There,
The vibration device is attached to a metal part provided on the backrest,
The backrest includes a backrest body having the metal part, and a cover attached to the backrest body,
The vibration device is covered with the cover;
The backrest body includes a resin portion formed over the entire backrest body in addition to the metal portion,
The vibration apparatus, chair child characterized in that in contact with the metal portion and the resin portion. The backrest includes a back frame that contacts the metal part;
The chair according to any one of claims 1 to 3, wherein the back frame is provided with a vibration diffusing section that diffuses vibrations widely on the backrest . The chair according to claim 4 , 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,
6. The apparatus according to claim 1 , wherein at least a part of the vibration device is disposed in front of a line connecting an upper end portion and a lower end portion of the back surface of the backrest body. Chairs. The backrest is provided with a plurality of linear metal frames,
The chair according to any one of claims 1 to 6, wherein the vibration device is arranged between the plurality of linear metal frames . 8. The vibration device according to claim 1, wherein the vibration device is long on one side and is attached to the backrest so that a long direction is a vertical direction . Chair. A seat of the chair;
A connecting 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 8, wherein the harness passes through the connection member and is bent in a normal state . The vibration apparatus, the chair according to any one of claims 1 to 9, characterized in that provided in the lower part of the backrest. The chair according to any one of claims 1 to 10, wherein a shielding plate that physically blocks a space is provided around the vibration device in the backrest body or the cover . A battery for supplying power to the control device and the vibration device;
The chair according to any one of claims 1 to 11, wherein the control device and the battery are provided above the vibration device . A battery for supplying power to the control device and the vibration device;
The chair according to any one of claims 1 to 12, wherein the control device and the battery are provided separately on the left and right of the vibration device . The chair according to claim 12 or 13 , wherein at least one of the vibration device, the control device, and the battery is disposed in a recessed portion on a back surface of the backrest . The chair according to any one of claims 12 to 14, wherein the vibration device, the control device, and the battery are unitized by being attached to a holding member . The backrest body or the cover includes a plurality of protrusions protruding from the periphery,
The chair according to claim 2 or 3 , wherein the vibration device is provided at a position avoiding the plurality of protrusions . The backrest body includes a resin portion formed over the entire backrest body in addition to the metal portion,
The chair according to claim 1 or 2, wherein the vibration device is in contact with the metal part and the resin part .

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