JP6569265B2 - Chair - Google Patents

Description

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

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, a technique for preventing a decrease in arousal level, in other words, preventing a dozing, can be used for a legged chair for office work and the like for the purpose of efficiently studying and working in addition to a vehicle seat.

However, when mounting electrical equipment on a chair with legs, it is possible to secure mounting space and mounting strength for batteries, ECUs (Electrical Control Units), etc., unlike vehicle seats where electrical equipment can be placed inside the vehicle. It was difficult.
Here, as a technique using an electric device for a legged chair, Patent Document 2 discloses a control including a battery and a control device in which a sensor is arranged on a seating surface of a legged chair in order to correct a posture of a person who is seated. A technique is disclosed in which a unit (a member that holds a battery and a control device is referred to as a holding member) is attached to the lower surface of the cushion pan and the posture of the seated person is detected based on the presence or absence of a sensor detection signal.

JP 2013-220810 A JP-T-2006-503599

In the chair with legs described in Patent Document 2, the control unit may come off the cushion pan when a seated person's leg hits the control unit and an impact is applied to the control unit.
For this reason, it was necessary to ensure the attachment strength to the chair with a leg of a control unit.

In addition, heat generated from the battery and the control device is trapped in the control unit, which may reduce the operation speed of the control device.
Furthermore, it is difficult to secure a space for handling the harness attached to the control unit. In particular, in a chair with legs on casters, the harness is easily entangled with the chair, and the attachment of the harness has been a problem.

  In addition, since the control unit is provided below the seat portion, it is difficult for the seated person to replace or charge the battery constituting the control unit in the seated state.

The present invention has been made in view of such problems, and an object of the present invention is to provide a chair capable of increasing the mounting strength between the holding member and the chair and maintaining the mounting state stably.
Another object is to suppress a thermal effect on the control device and prevent a decrease in operating speed.
Still another object is to provide a space around the harness in the chair.
Yet another object is to facilitate replacement or charging of a battery provided in the chair.

According to the chair according to the present invention, the subject is a leg member, a support column connected to the leg member, a metal frame that is integrated with the support column, and a seat frame. and waking devices to wake the seated person controller and the organic to the controlling the stimulator and stimulation device added, and the holding member for holding a battery for supplying power to the wake device, the battery and the control device The holding member is attached to the metal frame, and the holding member holds the battery below the control device.

As described above, according to the present invention, the holding member holding the battery and the control device is attached to the metal frame integrated with the support provided in the chair, so that the mounting state of the holding member to the chair can be improved. It can be maintained stably.
In addition, since the holding member holds the battery in a lower position that is a position away from the seat, it becomes easy for the user of the chair to attach and detach the battery while sitting on the seat, Or workability | operativity becomes favorable because it becomes easy to attach or detach a power supply cord to the plug connected to a rechargeable battery.
Furthermore, since the control device is held by the holding member above the battery, the dead space above the battery can be used effectively.

The metal frame is preferably curved.
According to the above configuration, the support state of the holding member can be stably maintained by setting the metal frame whose rigidity is increased by forming the metal frame to be curved as the attachment target of the holding member.

Further, the holding member has a protruding part that protrudes upward from the battery or the control device that is held and is attached to the metal frame, and in the state where the holding member is attached to the metal frame, It is preferable that a space is formed between the battery or the control device and the metal frame.
According to the above configuration, since the space is formed between the battery or the control device and the metal frame, the heat dissipation becomes good and the harness can be routed in the space.

It is preferable that the holding member has a resin portion at least in part and includes a fastening member that fastens the resin portion to the metal frame.
According to the above configuration, the fastening member can be fastened with the metal frame and the resin portion having low rigidity in the holding member sandwiched therebetween, whereby the fastening length of the fastening member can be increased and the attachment strength can be increased. Can do.
Preferably, a sensor is provided behind the control device in the front-rear direction of the chair, and the control device and the battery overlap in the up-down direction of the chair.

ADVANTAGE OF THE INVENTION According to this invention, the attachment strength to the chair of a holding member can be raised, and an attachment state can be maintained stably.
Further, according to the present invention, the heat dissipation becomes good and the harness can be routed in the space.
The user of the chair can easily attach / detach or charge the battery while sitting on the seat, and the workability is improved.
Furthermore, the dead space above the battery can be used effectively.

It is an external view of the chair with a leg concerning the embodiment of the present invention. It is a lower side perspective view which shows the cushion pan lower surface to which a holding cover is attached. It is a disassembled perspective view of ECU, a battery, a holding cover, etc. attached to a chair with legs. It is a perspective view which shows assembly | attachment states, such as ECU attached to a chair with a leg, a battery, and a holding cover. It is a typical front view which shows the state in which the holding cover holding ECU and a battery was attached to the lower surface of the cushion pan.

The present invention relates to a chair, and more particularly, to a chair provided with an awakening (slumber prevention) 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, a legged chair S according to an embodiment of the present invention, an ECU 7 provided in the legged chair S, a battery 8, and a holding cover 71 that holds them will be described with reference to the drawings.
In the following description, the front-rear direction indicates the front-rear direction of the chair, 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, with reference mainly to FIG.1 and FIG.2, the main structures of the chair S with a leg are demonstrated. Here, FIG. 1 is an external view of the legged chair S according to the embodiment of the present invention, and FIG. 2 is a lower perspective view showing the lower surface of the cushion pan F21 to which the holding cover 71 is attached.
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.
A caster 31a is attached to each of the four branches of the foot F31.
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, and may not include the casters 31a.

  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. 2, the cushion pan F21 and the lower frame portion F21b extending in the width direction of the chair extend in a cross shape and intersect with the lower frame portion F21b. The upper frame portion F21c is present, a resin plate F21d attached to the upper portion thereof, and a pad portion F21e with skin attached to the upper portion of the resin plate F21d.

  The lower frame portion F21b extends in the width direction of the chair on the rear side of the cushion pan F21, and a through hole F21f is formed at the center of the lower frame portion F21b through which the support column F21a passes.

The upper frame portion F21c corresponds to the metal frame according to the present invention, extends in the front-rear direction of the chair at the center in the width direction of the chair, and is joined to the lower frame portion F21b by welding. At the center of the upper frame part F21c, a pipe-like support F21a extending perpendicularly to the periphery is joined by welding or the like.
In addition, two recesses F21g extending in the front-rear direction are formed on the front side in the front-rear direction of the chair relative to the lower frame part F21b in the upper frame part F21c, and are curved and formed so as to wave in the width direction of the chair. The rigidity is improved.
Two through holes F21h through which tapping screws N1 (refer to FIG. 3) corresponding to the fastening members according to the present invention pass are formed in front and rear on both outer sides in the width direction of the chair from the recess F21g in the upper frame portion F21c. ing.
Specifically, the through hole F21h is for passing the upper frame portion F21c and the lower frame portion F21b joined together and a tapping screw N1 for attaching the holding cover 71 described later to the resin plate F21d.

  The pad portion F21e with an epidermis is composed of a pad made of a cushion material such as urethane and an epidermis that covers the pad, and a respiration sensor 9 described later is disposed between the epidermis and the pad.

The back pan F22 is connected to the rear portion of the cushion pan F21, and extends vertically upward from the cushion pan F21.
A vibration device 35 is attached to the center of the back pan F22 as shown in FIG. As will be described in detail 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.

<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 corresponds to the stimulation device according to the present invention, and is a device including a so-called “vibration motor” including a known unbalanced mass motor.

The ECU 7 corresponds to a control device according to the present invention, and is a central function that comprehensively executes electric control. In this example, the ECU 7 is based on a potential difference signal converted into a digital signal indicating a breathing interval. In addition, it has a function of driving and controlling the vibration device 35.
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.

The signal input to the ECU 7 is a potential difference signal converted into a digital signal by the signal processing circuit, and the output is power for driving the vibration device 35.
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 that constitutes the awakening device U is attached to the lower surface side of the cushion pan F21 by a holding cover 71 (see FIG. 5), and the vibration device 35, as shown in FIG. It is attached near the center of the facing surface.

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, and a power supply terminal is formed on the front surface. The battery 8 is charged from a household power source by connecting a charging cord (not shown) from a power supply terminal. And the battery 8 can divert the battery used for charge, such as a smart phone.
The battery 8 is not limited to a rechargeable type, and may be a single-use removable type.

Next, the attachment of the ECU 7 and the battery 8 will be described with reference to FIGS.
3 is an exploded perspective view of the ECU 7, the battery 8 and the holding cover 71 attached to the legged chair S. FIG. 4 is an assembly of the ECU 7, the battery 8 and the holding cover 71 attached to the legged chair S. FIG. 5 is a schematic front view showing a state in which a holding cover 71 that holds the ECU 7 and the battery 8 is attached to the lower surface of the cushion pan F21.

  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 upper frame portion F21c.

  As shown in FIG. 3, the holding cover 71 corresponds to the holding member and the resin portion according to the present invention, and includes an accommodation concave groove 71 a having an open top and a substantially U-shaped vertical section, and A pan mounting portion 71b extending in a flange shape from both ends of the upper portion to the upper outside is formed, and is formed of a resin material. The pan attaching portion 71b corresponds to a protruding portion according to the present invention, and the pan attaching portion 71b is formed with a pan attaching hole 71c through which the tapping screw N1 is passed.

Further, a plurality of L-shaped ribs 71d whose lower portions are formed long in the width direction of the chair are formed side by side in the front-rear direction of the chair on the inner walls on both sides in the width direction of the chair of the holding cover 71. A base member 72 described later is placed on the rib 71d. The lower portions of the pair of ribs 71d in the chair width direction are formed at intervals longer than the length of the battery 8 so that the battery 8 can be held in the width direction of the chair. It is formed with a high height.
Furthermore, the rib 71e which is the foremost in the front-rear direction of the chair of the holding cover 71 is formed such that the upper portion projects from the other rib 71d in the width direction of the chair. More specifically, the length between the pair of ribs 71e on both sides in the width direction of the chair is set shorter than the length in the width direction of the chair of the cover member 73 described later.
For this reason, the cover member 73 that covers the ECU 7 and is held by the holding cover 71 is restricted from moving forward by the rib 71e.

On the front side of the bottom wall of the holding cover 71, a cantilever section 71f is formed by cutting away both sides in the width direction of the chair from the front end to the rear.
At the front end of the cantilever section 71f, a mountain-shaped locking projection 71g that protrudes upward and continues in the width direction of the chair is formed.
The cantilever piece 71f is for detachably supporting a later-described battery 8 from the holding cover 71.
Specifically, the cantilever piece 71f is held by the locking projection 71g being locked to the battery 8 in a normal state where no external force is applied.
On the other hand, when the battery 8 attached in the holding cover 71 is pulled forward, the battery 8 can be removed by abutting and bending against the locking protrusion 71g.

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.
In particular, a rectangular notch is formed on the front surface of the cover member 73 so that a coupler (not shown) of the ECU 7 is exposed and the ECU 7 and the breathing sensor 9 or the vibration device 35 are connected by the coupler.
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.

Since the base member 72 is placed on the ribs 71d arranged at intervals in the front-rear direction, the heated air generated from the ECU 7 passes between the ribs 71d via the opening portion of the base member 72. Will pass. For this reason, the heat dissipation of ECU7 can be made favorable.
Furthermore, since the lower part of the rib 71d is formed with a height higher than the thickness of the battery 8 in the vertical direction, the holding cover 71 and the battery 8 arranged on the rib 71d can be separated from each other.
As described above, the holding cover 71 and the battery 8 are arranged apart from each other, so that the heat between the two can be prevented from being directly transmitted and the temperature rise between the two can be suppressed.

The battery 8 is provided below the ECU 7 from the cushion pan F21. By arranging the battery 8 in this way, the seated person can easily reach to the battery 8 while sitting on the cushion pan F21. That is, the seated person can easily attach / detach or charge the battery 8 while sitting on the cushion pan F21, and the workability is improved.
And the dead space of the chair S with a leg can be used effectively by arrange | positioning ECU7 which is not frequently touched except the maintenance above the battery 8. FIG.

Thus, the composite body of the base member 72 and the cover member 73 is stored in the groove of the holding cover 71 together with the battery 8 in a state where the ECU 7 is stored in the storage space. In this state, the pan mounting portion 71b ( It is fastened to the cushion pan F21 by the tapping screw N1 from the pan mounting holes 71c (four in this example) formed in the two (in this example).
Specifically, the tapping screw N1 is tapped to the resin plate F21d through the pan attachment hole 71c and the through hole F21h of the upper frame portion F21c.
That is, the holding cover 71 is fixed by the tapping screw N1 in a state of being in contact with the upper frame portion F21c having high rigidity because it has the recess F21g and is formed integrally with the support column F21a. Strength can be increased.

Further, the tapping screw N1 is tapped with the lower surface of the screw head in contact with the resin pan mounting portion 71b. For this reason, the fastening strength by the tapping screw N1 is higher than that in the case of contacting the metal surface.
Then, the reaction force acting on the lower surface of the screw head is higher than the case where the upper frame portion F21c is directly attached to the resin plate F21d without attaching the holding cover 71 by the thickness of the pan attaching portion 71b. It is possible to make it difficult to loosen.
Note that the cover member 73 is preferably formed of a resin material, but only focusing on obtaining the above effect, only the portion fastened by the tapping screw N1 may be formed of the resin material.

As shown in FIG. 5, in the state where the holding cover 71 is attached to the upper frame portion F21c, the pan attachment portion 71b that contacts the upper frame portion F21c protrudes upward from the cover member 73. A space SP is formed between 73 and the upper frame portion F21c.
Thus, the heat generated from the ECU 7 and the battery 8 can be radiated by the formed space SP.
Furthermore, a harness (not shown) connected to at least one of the respiration sensor 9, the vibration device 35, the ECU 7, and the battery 8 can be disposed using a part of the space SP.

Note that an extension cable (not shown) having male-female terminals, for example, is connected to the charging terminal of the battery 8 held by the holding cover 71, and a charging port is provided at the tip of the foot F31 above the caster F31a. You may make it do.
In this way, the seated person can more easily see the tip of the foot part F31 than the vicinity of the lower surface of the cushion pan F21, so that the charging cord of the battery 8 can be connected more easily.
In this case, it is particularly preferable that an extension cable (not shown) is provided inside the column cylinder F30 and the foot part F31.
In addition, although illustration is abbreviate | omitted, LED for electricity display etc. may be mounted.

F21 cushion pan (seat)
F21a Post F21b Lower frame part F21c Upper frame part (metal frame)
F21d Resin plate F21e Pad part with skin F21f Through hole F21g Recessed part F21h Through hole F22 Back pan F3 Leg member F30 Post cylinder F31 Foot part F31a Caster N1 Tapping screw (fastening member)
N2 fixing screw S chair SP with space U space awakening device 31a caster 35 vibration device (stimulator)
7 ECU (control device)
71 Holding cover (holding member, resin part)
71a Housing groove 71b Pan mounting part (protruding part)
71c Pan mounting hole 71d, 71e Rib 71f Cantilever section 71g Locking protrusion 72 Base member 73 Cover member 8 Battery 9 Respiration sensor

Claims (5)

Leg members;
A strut connected to the leg member;
A metal frame that is integrated with the column and forms a seat;
The seated person to have a control device for controlling the stimulator and stimulation device to apply a stimulus to the seated person
Awakening equipment to awaken ,
A battery for supplying power to the awakening device;
A holding member for holding the battery and the control device,
The holding member is attached to the metal frame,
The chair, wherein the holding member holds the battery below the control device.   The chair according to claim 1, wherein the metal frame is curved. The holding member has a protrusion that protrudes upward from the battery or the control device that is held and is attached to the metal frame,
The chair according to claim 1 or 2, wherein a space is formed between the battery or the control device and the metal frame in a state where the holding member is attached to the metal frame. The holding member has a resin portion at least in part,
The chair according to claim 1, further comprising a fastening member that fastens the resin portion to the metal frame. A sensor is provided behind the control device in the front-rear direction of the chair,
The chair according to any one of claims 1 to 4, wherein the control device and the battery overlap each other in a vertical direction of the chair.

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