JP2022125257A - Chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair where an awakening unit is attached by effectively using a space of a chair.

SOLUTION: A legged chair S includes: a cushion pan F21 having a seat part frame 74; a supporter F21a for supporting the cushion pan F21 from below; a leg member F3 attached to the supporter F21a; an awakening unit; and a battery for supplying power to the awakening unit. The awakening unit U awakens a sitting person by including a vibration device for stimulating a sitting person and a control device for controlling the vibration device. The seat part frame 74 includes: a lower frame part F21b; and an upper frame part F21c arranged by being vertically overlapped on the lower frame part F21b and also arranged to be at least partially non-overlapped. The control device is arranged under a part of the upper frame part F21c.

SELECTED DRAWING: Figure 3

COPYRIGHT: (C)2022,JPO&INPIT

Description

TECHNICAL FIELD The present invention relates to a chair, and more particularly to a chair provided with an arousal device that provides stimulation to a person seated in the chair.

2. Description of the Related Art Techniques for preventing a decrease in alertness of a vehicle driver are known for the purpose of preventing accidents while driving a vehicle.
For example, Patent Literature 1 discloses a technique of applying vibration stimulation to a seated occupant using a vehicle seat equipped with electric devices such as a heart rate sensor or a respiration sensor and a motor.
On the other hand, technology for preventing a decrease in arousal level, in other words, for preventing dozing off, can be used not only in vehicle seats but also in office chairs with legs for the purpose of efficient study and work.

However, when installing electrical equipment on a chair with legs, unlike a vehicle seat that allows electrical equipment to be installed inside the vehicle, it is necessary to secure mounting space and mounting strength for the battery, ECU (Electrical Control Unit), etc. It was difficult.
Here, as a technique for using an electric device in a chair with legs, Patent Document 2 describes a chair with legs, a sensor arranged on the seating surface, and a controller including a battery and a control device in order to correct the posture of the person sitting on the chair. A unit (a member that holds a battery and a control device is called a holding member) is attached to the bottom surface of a chair seat (referred to as a sitting portion in Patent Document 2), and the posture of a seated person is determined based on the presence or absence of a detection signal from a sensor. A technique for detecting is disclosed.

JP 2013-220810 A Japanese Patent Publication No. 2006-503599

In the chair with legs described in Patent Literature 2, the control unit is simply attached to the lower surface of the seat, so that the amount of protrusion of the control unit from the lower surface of the seat is large. For this reason, the seated person may feel discomfort when the leg or the like of the seated person collides with the control unit.
In addition, if the control unit and the control lever for adjusting the height of the chair are on the same side in the width direction of the chair, the control unit may be hit by the hand when trying to operate the control lever. There were times when I felt uncomfortable.

In addition, the heat generated from the battery and the control device accumulates in the control unit, and the operating speed of the control device may decrease.
Furthermore, it was difficult to secure a space for routing the harness attached to the control unit.

In addition, since the control unit is provided below the chair, it is difficult for the seated person to replace or charge the battery that constitutes the control unit while seated.
In particular, when a charging cable or the like is attached to a chair with casters and legs, the charging cable or the like may become entangled in the chair.

SUMMARY OF THE INVENTION The present invention has been made in view of such problems, and an object of the present invention is to provide a chair to which an awakening device is attached by effectively utilizing the space of the chair.
Another object is to suppress the amount of protrusion of the control device from the seat portion, thereby suppressing the control device from interfering with the legs of the seated person.
Another object of the present invention is to suppress the thermal effect on the control device and prevent the operating speed of the control device from decreasing.
Another object of the present invention is to prevent the control device and the battery from interfering with the operation of the operation unit, thereby making the operation unit comfortable to use.
Yet another object is to provide space for harness routing in a chair with legs.
Still another object is to facilitate replacement work or charging work of the battery provided in the chair with legs.

According to the chair according to the present invention, the above problem is solved by: a seat portion having a seat frame; support columns supporting the seat portion from below; leg members attached to the support columns; an arousal device for arousing a seated occupant and a controller for controlling the stimulator; and a battery for powering the arousal device, wherein the seat frame includes a lower frame and an upper frame portion disposed so as to overlap with the lower frame portion in the vertical direction and provided so that at least a portion thereof does not overlap, wherein the control device controls the above-mentioned It is solved by being arranged below the part.

According to the above configuration, the control device constituting the awakening device is arranged below a portion of the upper frame portion that does not overlap with the lower frame portion, so that the space of the chair can be effectively used, By suppressing the amount of protrusion of the control device from the seat portion, it is possible to prevent the control device from interfering with the legs or the like of the seated person.

Moreover, it is preferable that the battery is disposed so as to be vertically stacked on the control device.
According to the above configuration, the battery is stacked on the control device in the vertical direction, so that the battery or the control device is prevented from projecting in the width direction of the chair, so that the leg or the like of the seated person is prevented from projecting. You can avoid getting in the way.

Furthermore, it is preferable that the battery is arranged below the control device.
According to the above configuration, since the battery is arranged below the control device, the battery is provided at a position away from the seat. can be easily installed and removed.

Further, it is preferable that one of the control device and the battery that has a larger width or depth is provided on the upper side.
According to the above configuration, the larger width or depth of the control device and the battery is provided on the upper side, so that the space below the control device and the battery for the legs of the seated person can be widened. can.

Further, of the control device and the battery, the one that generates a larger amount of heat may be provided on the lower side.
According to the above configuration, the amount of heat generated is greater than that of the control device or the battery, which generates more heat than the case where the heat is trapped between the lower one and the seat when the one with the greater heat generation is provided on the upper side. If the side is provided on the lower side, the heat can be effectively released downward.

Further, it is preferable that an operation unit having a movable range and capable of changing the state of the chair is provided, and the control device and the battery are provided at positions avoiding the movable range of the operation unit.
According to the above configuration, since the control device and the battery are provided in a position that avoids the movable range of the operation unit, they are prevented from interfering with the operation of the operation unit, and the operation of the operation unit is comfortable to use. can be done.

Further, it is preferable that the control device includes a connector for connecting with the battery or the awakening device, and the connector is provided at a position avoiding the movable range of the operation section.
According to the above configuration, since the connector is provided at a position that avoids the movable range of the operating section, it is possible to avoid obstructing the operation of the operating section and improve the usability of the operating section.

Moreover, it is preferable that the connector is arranged at a position not overlapping with the operation portion in the vertical direction.
According to the above configuration, the connector is arranged at a position that does not overlap with the operating section in the vertical direction. , the connector and the harness connected to the connector can be prevented from interfering with the operation, and the operating portion can be comfortably used.

Further, the connector may be disposed on the opposite side of the chair in the width direction from the side on which the operating portion is provided.
According to the above configuration, the connector is disposed on the opposite side of the chair in the width direction to the side on which the operation section is provided, so that the seated person can reach out from the operation section side in the width direction of the chair and operate the operation section. It is possible to prevent the connector and the harness connected to the connector from interfering with the operation when operating the , and to improve the comfort of use of the operation part.

Moreover, it is preferable that the control device is arranged on the front side of the support, and the connector is arranged on the front side of the control device.
According to the above configuration, since the connector is arranged on the front side of the control device, the seated person can easily connect and disconnect the harness to and from the connector from the front side of the chair while sitting on the chair.

It is preferable that the connection port of the connector is provided at a position avoiding a position facing the support.
According to the above configuration, it is possible to easily attach and detach the harness to and from the connector without the strut becoming an obstacle, thus facilitating maintenance.

Moreover, the connection port of the connector may be disposed at a position facing the support.
According to the above configuration, since the connection port of the connector is disposed at a position facing the support, it is possible to suppress the intrusion of other objects into the vicinity of the connection port. can be prevented from falling out of the connection port.

Further, the awakening device includes a sensor for detecting the state of a seated person, the control device is connected to the sensor via a harness connected to the connector, and the connector is a connection port of the connector. is arranged facing the sensor.
According to the above configuration, since the connector is arranged so that the connecting port of the connector faces the sensor, the length of the harness that connects the sensor and the connector of the control device can be shortened.

Moreover, it is preferable that a case is provided on the front side of the back surface of the seat portion to hold the battery, and the front side of the case is opened to a size that allows the battery to be taken in and out.
According to the above configuration, the front side of the case is opened to a size that allows the battery to be taken in and out, so that the battery can be easily taken in and out from the case in a seated state.

Moreover, it is preferable that the case holds the battery and the control device.
According to the above configuration, since the case holds the battery and the control device as a unit, they can be easily attached to the seat.

Moreover, it is preferable that a slit is formed in the case.
According to the above configuration, heat dissipation can be enhanced by forming the slit in the case.

Moreover, it is preferable that the case is formed in a size that fits between adjacent leg portions among the plurality of leg portions that constitute the leg members.
According to the above configuration, since the case is formed in a size that fits between the adjacent leg portions, it is possible to prevent the case from interfering with the legs of the seated person.

In addition, it is preferable that the case has a portion to be fastened that is fastened to the upper frame portion with a fastener, and the portion to be fastened is formed rearward of the front end of the case in the longitudinal direction of the chair. .
According to the above configuration, the fastened portion of the case is formed rearward of the front end of the case in the longitudinal direction of the chair. can be positioned posterior to the front end of the For this reason, it is possible to prevent the hand of the seated person from feeling uncomfortable when touching this part.

Further, it is preferable that a gap is formed between at least a portion of the case other than the fastened portion and the upper frame portion.
According to the above configuration, a gap is formed between the upper frame portion and at least a portion of the case other than the fastened portion, so that air can flow through the gap and heat dissipation can be enhanced. .

Moreover, the said battery is preferable in it being a wireless power supply type battery.
According to the above configuration, the use of a wirelessly powered battery facilitates charging of the battery. In particular, when a wireless power supply type battery is used, unlike the case where a wired power supply type rechargeable battery is used, the cable connecting the battery and the outlet does not get caught in chair casters or the like.

According to the present invention, the space of the chair can be effectively used.
Further, according to the present invention, it is possible to prevent the battery or the control device from interfering with the legs of the seated person.
Moreover, according to the present invention, the battery can be easily attached and detached while the seated person remains seated on the seat.
Moreover, according to the present invention, the space below the control device and the battery can be increased.
Moreover, according to the present invention, heat generated from the control device and the battery can be effectively released.
Moreover, according to the present invention, the control device and the battery can be prevented from interfering with the operation of the operation unit, and the operation of the operation unit can be improved.
Further, according to the present invention, it is possible to prevent the connector from interfering with the operation of the operating section, thereby making the operating section more comfortable to use.
Further, according to the present invention, the connector and the harness connected to the connector can be prevented from becoming an obstacle, and the operating portion can be used comfortably.
Further, according to the present invention, the harness can be easily inserted into and removed from the connector from the front while sitting on a chair.
Further, according to the present invention, the harness can be easily attached to and detached from the connector without the struts becoming a hindrance, thus facilitating maintenance.
Further, according to the present invention, it is possible to prevent other objects from entering the vicinity of the connection port of the connector, and prevent the harness from falling out of the connection port due to being pulled by other objects.
Moreover, according to the present invention, the length of the harness that connects the sensor and the connector of the control device can be shortened.
Also, according to the present invention, the battery can be easily taken in and out of the case while the user is seated.
Also, according to the present invention, the mounting of the battery and control device to the seat is facilitated.
Furthermore, according to the present invention, it is possible to improve the heat dissipation of the case that holds the battery or the like.
Moreover, according to the present invention, it is possible to prevent the case from interfering with the legs of the seated person.
In addition, according to the present invention, it is possible to prevent the hand of the seated person from feeling uncomfortable when touching the portion of the seat that is fastened together with the fastened portion by the fastener.
Further, according to the present invention, the air can be circulated in the gap between the case and the upper frame portion to improve heat dissipation.
Further, according to the present invention, it is possible to prevent the cable connecting the battery and the outlet from being entangled in the casters of the chair or the like.

1 is an external view of a chair with legs according to an embodiment of the present invention; FIG. It is a lower side perspective view which shows the lower surface of the cushion pan to which a retention cover is attached. FIG. 2 is a schematic cross-sectional view showing the III-III cross section of FIG. 1; It is an exploded perspective view of a control device, a battery, a holding cover, etc. attached to the chair with legs. FIG. 4 is a perspective view showing a holding cover holding a control device and a battery; FIG. 4 is a schematic front view showing a state where a holding cover holding a control device and a battery is attached to the lower surface of the cushion pan. FIG. 2 is a schematic cross-sectional view showing a VII-VII cross section of FIG. 1; FIG. 4 is a schematic side view showing a state in which the chair with legs is laid down. It is a typical sectional view which shows the IX-IX cross section of FIG. 1 and shows the example which connects a harness to the back of a control apparatus. It is a schematic diagram which shows a chair with legs provided with a wireless electric power feeder.

TECHNICAL FIELD The present invention relates to a chair, and more particularly to a chair with an alertness device (drowsiness prevention 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 shape, size, arrangement, etc. of the members described below can be changed and improved without departing from the scope of the present invention, and the present invention naturally includes equivalents thereof.
Hereinafter, a chair S with legs according to an embodiment of the present invention, an ECU 7 and a battery 8 provided on the chair S with legs, and a holding cover 71 holding 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, 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, mainly with reference to FIGS. 1 to 3, the main configuration of the chair S with legs will be described. Here, FIG. 1 is an external view of a chair S with legs according to an embodiment of the present invention, FIG. 2 is a lower perspective view showing the lower surface of a cushion pan F21 to which a holding cover 71 is attached, and FIG. 1 is a schematic cross-sectional view showing a III-III cross section of FIG.
The chair S with legs mainly includes a leg member F3, a cushion pan F21 that is attached to the leg member F3 and supports the buttocks of the seated person, a back pan F22 that is a backrest connected to the cushion pan F21, and an awakening seat. device U.

The leg member F3 is composed of a four-branched leg portion F31 and a column tube F30 formed continuously from the leg portion F31, and is mainly made of a resin material.
A caster F31a is attached to each of the four branched ends of the leg F31.
Further, although the leg portion F31 is configured to be branched into four in this embodiment, it may be configured to be branched into three or more, and the caster F31a may not be provided.

The column tube F30 is fixed to the center of the leg portion F31 and extends upward. A post F21a, which will be described later, is passed through and fixed in the post tube F30.
As shown in FIG. 2, an operation lever 10 having a movable range in the vertical direction is arranged on one side of the column F30 in the width direction of the chair.
The operating lever 10 according to this embodiment corresponds to the operating portion according to the present invention, and has a function of adjusting the height of the cushion pan F21.
Note that the operation lever 10 is not limited to one having a height adjustment function. It may have a function to adjust.

The cushion pan F21 corresponds to the seat according to the present invention, and as shown in FIG. and a pad portion F21e with skin attached to the upper portion of the plate F21d.
The seat frame 74 includes a lower frame portion F21b extending in the width direction of the chair, and an upper side extending above the lower frame portion F21b and crossing the lower frame portion F21b so as to form a cross. and a frame portion F21c.

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 in the center of the lower frame portion F21b through which the post F21a passes.

The upper frame portion F21c extends in the longitudinal direction of the chair at the center in the width direction of the chair and is welded to the lower frame portion F21b. A pipe-shaped post F21a extending perpendicularly to the periphery is joined to the center of the upper frame portion F21c by welding or the like.
Two recesses F21g extending in the front-rear direction are formed in the upper frame portion F21c on the front side of the chair in the front-rear direction of the lower frame portion F21b. The rigidity of the upper frame portion F21c is enhanced by forming the concave portion F21g so as to undulate in the width direction of the chair.

Tapping screws N1 (see FIG. 4), which correspond to fasteners according to the present invention, are provided at portions of the upper frame portion F21c that do not overlap the lower frame portion F21b and on both sides in the width direction of the chair from the recess F21g. Two through-holes F21h are formed in the front and rear.
Specifically, the through hole F21h is for passing the tapping screw N1 for attaching the upper frame portion F21c and the lower frame portion F21b integrally joined together, and the holding cover 71 described later to the resin plate F21d. .

As shown in FIG. 3, the resin plate F21d has a plurality of vertically formed through holes F21j for dissipating heat transmitted from the buttocks of the seated person. The through hole F21j has a heat dissipation function and also has a function of inserting a harness 11 (to be described later) above and below the resin plate F21d.

The pad portion F21e with skin is composed of a pad portion F21o made of a cushioning material such as urethane, and a skin covering the pad portion F21o. there is In addition, in FIG. 3 and FIG. 9 described later, the skin is omitted to show the pad portion F21e with the skin.
As shown in FIG. 3, the pad portion F21o is formed with a guide hole F21k for guiding the harness 11 to the ECU 7, which will be described later.
The guide hole F21k is formed so as to obliquely extend forward and downward from the front of the respiratory sensor 9 provided on the upper surface of the pad portion F21o toward the vicinity of the ECU 7 .

The back pan F22 is connected to the rear portion of the cushion pan F21 and is formed to extend substantially vertically upward from the cushion pan F21.
A vibrating device 35 is attached to the center of the inside of the back pan F22 as shown in FIG. Although the 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 according to the control signal of the ECU 7 .

<About awakening devices>
Next, the awakening device U will be described.
The awakening device U according to this embodiment is mainly composed of an ECU 7, a battery 8, a respiratory sensor 9 and a vibrating device 35. FIG.

The vibration device 35 corresponds to the stimulation device according to the present invention, and is a device equipped with a so-called "vibration motor" consisting of a known unbalanced mass motor.

The ECU 7 is a central function that comprehensively executes electrical control, and in this example, has a function of driving and controlling the vibrating device 35 based on a potential difference signal converted into a digital signal that indicates the 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 respiratory sensor 9 shown in FIG. 3, a harness (not shown) connected to the vibration device 35, and a cable (not shown) connected to the battery 8 are connected to a connection port 70a of a connector 70 provided in the ECU 7. is connected.

The signal input from the respiratory sensor 9 to the ECU 7 via the connector 70 is a potential difference signal converted into a digital signal by the signal processing circuit, and the output is electric power for driving the vibration device 35. be.
The RAM temporarily stores parameters including signals under arithmetic control and input/output signals, and functions as a storage unit for storing potential difference signals converted into digital signals and other signals.

The ROM stores programs executed by the CPU and parameters of predetermined values. A driving unit and the like for driving are recorded as a program.
This driving section has a function of driving the vibrating device 35 by supplying electric power in accordance with an instruction from the CPU.
This CPU instruction signal is formed by computing the signal from the respiration sensor 9 .
In other words, the arousal state of the seated person is determined based on the signal transmitted from the respiratory sensor 9, and when it is determined that the seated person is not in the awake state, the CPU transmits a signal for driving the vibrating device 35. there is Note that a known configuration may be used for the configuration, and a heart rate sensor may be used instead of the respiratory sensor 9 .

As shown in FIG. 3, 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, and the vibrating device 35, as shown in FIG. It is attached near the center of the side facing 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 this embodiment. The battery 8 is stacked under a control device U1, which will be described later, and has a power supply terminal 80a formed on its front surface. The battery 8 is charged from a household power supply by connecting a charging cord (not shown) from the power supply terminal 80a. And the battery 8 can divert the battery used for charge, such as a smart phone.
Note that the battery 8 is not limited to a power feeding type, and may be a detachable type.

<Installation of ECU and battery>
Next, with reference to FIGS. 4 to 6 in addition to FIGS. 1 to 3, attachment of the ECU 7 and the battery 8 will be described.
Here, FIG. 4 is an exploded perspective view of the control device U1, the battery 8, the holding cover 71 and the like attached to the chair S with legs, and FIG. 5 shows the holding cover 71 holding the control device U1 and the battery 8. FIG. 6 is a perspective view and a schematic front view showing a state in which a holding cover 71 holding the control device U1 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 further together with the battery 8 is held by the holding cover 71 and attached to the upper frame portion F21c. A unit obtained by combining the ECU 7, the base member 72, and the cover member 73 is also called a control device U1.

The holding cover 71 corresponds to the case according to the present invention, and as shown in FIG. It has a pan mounting portion 71b that extends outward and upward in a flange shape, and is made of a resin material.

The pan mounting portion 71b corresponds to the fastened portion according to the present invention, and is formed with a pan mounting hole 71c through which the tapping screw N1 is passed.
The front end of the pan mounting portion 71 b is not formed to reach the front end of the holding cover 71 , in other words, it is located behind the front end of the holding cover 71 .
By being formed in this manner, the upper frame portion F21c, which is fastened together with the pan mounting portion 71b by the tapping screw N1, can be arranged behind the front end of the holding cover 71. As shown in FIG.
Therefore, the amount of forward extension of the upper frame portion F21c for attachment of the pan attachment portion 71b can be suppressed, and the hand of the seated person touching the upper frame portion F21c can be prevented from feeling uncomfortable. can.

In addition, a plurality of L-shaped ribs 71d whose lower portions are elongated in the width direction of the chair are formed on the inner walls of the holding cover 71 on both sides in the width direction of the chair. A base member 72, which will be described later, is placed on the rib 71d. The lower portions of the pair of ribs 71d facing each other in the width direction of the chair are formed at intervals longer than the length of the battery 8 so that the battery 8 can be accommodated in the width direction of the chair. is also formed at a high height.
Furthermore, the rib 71e of the holding cover 71, which is located at the front in the longitudinal direction of the chair, is formed so that the upper part of the rib 71e protrudes in the width direction of the chair more than the other ribs 71d. 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 in the cover member 73, which will be described later.
Therefore, the cover member 73 that covers the ECU 7 and is held by the holding cover 71 is restricted from moving forward by the ribs 71e.

A rectangular slit 71h extending vertically is formed between the ribs 71d adjacent in the front-rear direction.
By forming the slit 71h in this manner, air can flow between the inside and the outside of the holding cover 71, and the heat dissipation of the ECU 7 and the battery 8 held by the holding cover 71 can be enhanced.

On the front side of the bottom wall of the holding cover 71, cantilever pieces 71f are formed by notching both sides in the width direction of the chair rearward from the front end.
At the front end of the cantilever piece 71f, there is formed a mountain-shaped locking projection 71g that protrudes upward and continues in the width direction of the chair.
This cantilever segment 71f is for detachably supporting the battery 8, which will be described later, from the holding cover 71. As shown in FIG.
Specifically, the cantilever piece 71f holds the battery 8 by engaging the locking protrusion 71g in a normal state where no external force is applied.
On the other hand, when the battery 8 attached inside the holding cover 71 is pulled forward, the battery 8 can be removed by coming into contact with the locking projection 71g and bending.

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 length in the width direction. A plurality of punch holes 72a are formed in the side surface of the base member 72, and by allowing air to flow therethrough, heat dissipation of the ECU 7 supported inside is enhanced.
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 to expose the connector 70 of the ECU 7 and connect the ECU 7 and the respiratory sensor 9 or the vibration device 35 with the connector 70 .
These are stacked vertically to form a storage space for the ECU 7 inside.
The base member 72 and the cover member 73 are fastened with a fixing screw N2 in a state where the ECU 7 is housed, stacked on the battery 8, and held in the accommodation groove 71a.

Since the base member 72 is placed on the ribs 71d that are spaced in the front-rear direction, heated air generated from the ECU 7 passes through the punched holes 72a of the base member 72 and flows between the ribs 71d. will pass through Therefore, the heat dissipation of the ECU 7 can be improved.
Furthermore, since the lower portion of the rib 71d is formed to have a height higher than the thickness of the battery 8 in the vertical direction, the battery 8 and the holding cover 71 arranged on the rib 71d can be separated from each other.
By arranging the holding cover 71 and the battery 8 apart from each other in this way, it is possible to prevent direct transfer of heat between the two and suppress a temperature rise between the two.

The battery 8 is provided below the cushion pan F21 with respect to the controller U1. By arranging the battery 8 in this way, the seated person can easily reach the battery 8 while sitting on the cushion pan F21. That is, the seated person can easily attach/detach the battery 8 or charge the battery 8 while sitting on the cushion pan F21, thereby improving workability.

By arranging the control device U1, which is not frequently touched except for maintenance, above the battery 8, the dead space of the chair S with legs can be effectively used.
Furthermore, in this embodiment, the controller U1 is formed larger than the battery 8 in the width and depth directions of the chair. For this reason, it is preferable that the control device U1 is provided over the battery 8 .
In this way, the side that is larger in the width direction or depth direction of the chair is arranged upward, and for example, the holding cover 71 is made to fit the relatively small size of the battery 8 . , the space below the holding cover 71 can be widened.

Also, the battery 8 is preferably stacked under the control device U1, but is not limited to such a configuration, and may be stacked above the control device U1, for example.
Since the control device U1 and the battery 8 are arranged so as to overlap each other in this way, it is possible to prevent the control device U1 or the battery 8 from projecting in the width direction of the chair S with legs. interference with a person's leg or the like can be suppressed.

Further, if the one of the ECU 7 and the battery 8 that generates a larger amount of heat is arranged on the upper side in the vertical direction, heat will be trapped between the upper frame portion F21c and the lower one.
Therefore, it is preferable to dispose the one of the ECU 7 and the battery 8, which generates a larger amount of heat, on the lower side in the vertical direction, because heat dissipation is good.

The controller U1 is housed inside the groove of the holding cover 71 together with the battery 8. As shown in FIG. In this state, the holding cover 71 is fastened to the cushion pan F21 by tapping screws N1 through pan mounting holes 71c (four in this example) formed in the pan mounting portion 71b (two in this example). Attached.
Specifically, the tapping screw N1 is tapped to the resin plate F21d through the pan mounting hole 71c and the through hole F21h of the upper frame portion F21c.

Further, the tapping screw N1 is tapped with the lower surface of the screw head in contact with the pan mounting portion 71b made of resin. Therefore, the tightening strength of the tapping screw N1 is higher than when it abuts against the metal surface.

As shown in FIG. 6, when the holding cover 71 is attached to the upper frame portion F21c, the pan attaching portion 71b that contacts the upper frame portion F21c protrudes above the cover member 73. As shown in FIG. Therefore, a space SP corresponding to the gap according to the present invention is formed between the cover member 73 and the upper frame portion F21c.
Heat generated from the ECU 7 and the battery 8 can be dissipated by the space SP formed in this way.
Furthermore, as shown in FIG. 3, it is also possible to use a part of the space SP to dispose a harness 11 connected to the respiratory sensor 9 and the ECU 7, for example.
Alternatively, a harness or cable (not shown) connecting the vibration device 35 or the battery 8 and the ECU 7 may be passed through a part of the space SP.

A holding cover 71 that houses the control device U1 and the battery 8 is provided at a position that avoids the movable range of the operating lever 10 . Therefore, it is possible to avoid obstructing the operation of the operating lever 10 .

Similarly, the connector 70 is provided at a position avoiding the movable range of the operating lever 10. More specifically, as shown in FIG. It is provided on the other side, which is the opposite side.
Since the connector 70 is arranged in this way, when the seated person reaches out from one side of the chair S in the width direction in order to operate the operation lever 10, the connector 70 and the connector 70 are connected to each other. It is possible to avoid the connected harness 11 from becoming an obstacle.

The holding cover 71 is attached to the cushion pan F21 so that the connection port 70a of the connector 70 faces forward.
Therefore, the seated person can insert and remove the harness 11 while sitting on the chair S without the support tube F30 behind the holding cover 71 being an obstacle.

For example, an extension cable (not shown) having a male-female terminal 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 leg F31 above the caster F31a. You may make it
In this way, the seated occupant can more easily see the tip of the foot portion 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 to arrange an extension cable (not shown) inside the column tube F30 and the leg portion F31.
Although not shown in the drawings, an LED or the like for displaying power supply may be mounted.

<Regarding the size and mounting position of the retaining cover>
Next, with reference to FIGS. 7 and 8, the size and mounting position of the holding cover 71 will be described.
Here, FIG. 7 is a schematic cross-sectional view showing the VII-VII cross section of FIG. 1, and FIG. 8 is a schematic side view showing a state in which the chair S with legs is laid down.

As shown in FIG. 7, the holding cover 71 is sized to fit between the adjacent legs F31 in the horizontal plane.
Since the holding cover 71 is formed in this way, when the seated person places the two adjacent foot portions F31 on the front side and puts the legs on the two foot portions F31, the legs of the seated person can be contact with the holding cover 71 can be easily avoided.
Therefore, it is possible to prevent the seated person from feeling uncomfortable due to the legs of the seated person coming into contact with the holding cover 71 .

Further, as shown in FIG. 8, even when the chair S with legs is laid down on the floor FL in any direction, the holding cover 71 is positioned so that the contact portion of the cushion pan F21 with the floor FL and the floor portion of the foot portion F31 are in contact with each other. It is preferable that it is arranged at least above the straight line connecting the contact portion with the FL.
Since the holding cover 71 is attached to the cushion pan F21 in such an arrangement, even if the chair S with legs accidentally falls down, the holding cover 71 abuts on the floor FL, and the holding cover 71 and the holding cover 71 are in contact with the floor FL. It is possible to prevent the ECU 7 and the battery 8 inside the cover 71 from being damaged.

(First modification)
Next, a holding cover 75 that holds the control device U1 according to the first modified example of the present embodiment will be described with reference to FIG. Here, FIG. 9 is a schematic sectional view showing an IX-IX section of FIG. 1 and showing an example of connecting the harness 11 to the rear of the control device U1.
In the following examples, the same reference numerals are assigned to the same configurations as those of the above-described embodiment, and the description thereof is omitted to clarify the differences.

This modification is characterized by a configuration in which the respiration sensor 9 and the connector 70 can be connected with a short harness 11 .
Specifically, the holding cover 75 according to this modification corresponds to the case according to the present invention, and the control device U1 is arranged so that the connector 70 of the ECU 7 constituting the control device U1 is arranged on the side of the post F21a. is characterized by holding
Unlike the holding cover 71, the rear side surface of the holding cover 75 is formed with an opening 75a through which the connector 70 is exposed rearward.

A through-hole F21n communicating with the hollow portion from the outside is formed in a portion of the post F21a exposed from between the lower frame portion F21b and the upper frame portion F21c and facing the holding cover 75 on the front side. ing.
Part of the plurality of through holes F21j formed in the resin plate F21d is located above the hollow portion of the column F21a and communicates with the hollow portion.
A guide hole F21m is formed in the pad portion F21o so as to be continuous with the through hole F21j.
The harness 11 connected to the connector 70 is connected to the respiratory sensor 9 through the opening 75a of the holding cover 75, the through hole F21n of the support F21a, the through hole F21j of the resin plate F21d, and the guide hole F21m of the pad portion F21o. ing.

In this way, the connector 70 is arranged on the rear side of the holding cover 75, in other words, on the side facing the support column F21a and the support tube F30, so that the connection port 70a of the connector 70 can be connected to the support post F21a and the support tube F30. and can prevent foreign matter from entering.
Moreover, according to such a configuration, the distance between the respiratory sensor 9 behind the holding cover 75 and the connector 70 is shorter than when the connector 70 is arranged on the front side of the holding cover 75 .
Therefore, the harness 11 can be shortened, the harness 11 can be easily attached, and the material cost can be reduced.
Furthermore, by directing the connector 70 connected to the harness 11 of the respiratory sensor 9, which is rarely touched by the seated person, toward the support F21a (support cylinder F30), the seated person may accidentally disconnect the harness 11 from the connector 70. It is possible to avoid human errors such as

Although the harness 11 connecting the ECU 7 and the respiratory sensor 9 has been described, the positional relationship of the harness (not shown) connecting the ECU 7 and the vibrating device 35 and the cable (not shown) connecting the ECU 7 and the battery 8 Needless to say, the length can be shortened by arranging the connector 70 according to .

(Second modification)
Finally, a chair S with legs including a wireless power supply device 16 according to a second modification of the present embodiment will be described with reference to FIG. 10 .
Here, FIG. 10 is a schematic diagram showing a chair S with legs including the wireless power feeder 16. As shown in FIG.

A wireless power supply device 16 according to this example includes a power transmission unit 12 embedded in the floor FL, a power reception unit 13 for transmitting power from the power transmission unit 12, and a cable 15 connected to the power reception unit 13 and the battery 8. there is
The power transmission unit 12 and the power reception unit 13 have coils inside, and generate an electromotive force in the power reception unit 13 by means of magnetic flux generated by applying current from a household power source (not shown) to the power transmission unit 12 . .
The power receiving unit 13 is attached to the lower side of the leg F31 so as to be close to the power transmitting unit 12 in order to increase the power receiving efficiency from the power transmitting unit 12 .
A cable 15 extending from the power receiving unit 13 passes through the hollow interior of the post F21a and is connected to the battery 8 attached to the cushion pan F21.

In this example, when the battery 8 runs out of power, it is not necessary to replace it with a new battery 8 or to insert the charging cable into the battery 8 .
Therefore, it is not troublesome to supply power to the awakening device U, and when the chair S with legs is moved, the charging cable does not get entangled in the leg members F3, so that the chair S with legs can be used comfortably. It becomes possible.
For the wireless power feeding device 16, an electric field coupling method or a resonance coupling method may be adopted in addition to the electromagnetic induction method.

In the above embodiment, the vibrating device has been described as an example that corresponds to the stimulation device that constitutes the awakening device, but the present invention is not limited to such a configuration. For example, using a display, light, buzzer, etc. provided in the vehicle to notify the seated occupant or fellow passenger by video, light, or sound, so as to directly or indirectly keep the seated occupant awake. good too.

F21 Cushion pan (seat)
F21a support F21b lower frame F21c upper frame F21d resin plate F21e pad with skin F21f through hole F21g recess F21h through hole F21j extraction hole F21k, F21m guide hole F21n through hole F21o pad F22 back pan F3 leg member F30 post tube F31 Foot F31a Caster FL Floor N1 Tapping screw (fastener)
N2 Fixing screw S Chair with legs SP Space (gap)
U awakening device U1 control device 10 operation lever (operation unit)
REFERENCE SIGNS LIST 11 Harness 12 Power transmission unit 13 Power reception unit 14 Conductor 15 Cable 16 Wireless power supply device 35 Vibration device (stimulation device)
7 ECUs
70 connector 70a connection port 71, 75 holding cover (case)
71a accommodation concave groove 71b pan mounting portion (fastened portion)
71c Pan mounting hole 71d, 71e Rib 71f Cantilever piece 71g Locking protrusion 71h Slit 72 Base member 72a Punch hole 73 Cover member 74 Seat frame 75a Opening 8 Battery 80a Power supply terminal 9 Breathing sensor (sensor)

Claims (1)

a seat having a seat frame;
a support for supporting the seat from below;
a leg member attached to the strut;
an arousal device for awakening a seated person, having a stimulator for stimulating the seated person and a control device for controlling the stimulator;
a battery that powers the alertness device,
The seat section frame includes a lower frame section and an upper frame section that is arranged so as to overlap the lower frame section in the vertical direction and is provided so that at least a part thereof does not overlap,
The chair, wherein the control device is arranged below the part of the upper frame part.

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