JP2010094223A - Barrier information measuring apparatus when utilizing wheelchair and route barrier information gathering system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a physical strength measuring apparatus when utilizing a wheelchair and a route barrier information gathering system, capable of accurately and stably measuring and gathering barrier information at a low cost while a wheelchair user utilizes his/her wheelchair that is used daily as it is. <P>SOLUTION: The physical strength measuring apparatus when utilizing the wheelchair includes: a ring-like fixed plate disposed between a wheel and a hand rim and fixed on the hand rim side of the wheel; a support member abutted to the inner peripheral side of the hand rim for supporting the hand rim freely turnably in parallel and concentrically to the ring-like fixed plate; and a connection member for connecting the hand rim to the ring-like fixed plate so as to transmit torque by being fixed to the hand rim and the ring-like fixed plate, which incorporates a load cell for detecting the torque of the hand rim. The system is for gathering the barrier information of each route when utilizing the wheelchair using the apparatus. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a device for measuring barrier information relating to arm strength by a user's hand rim operation when using a wheelchair, that is, barrier information relating to difficulty or ease of traveling while using a wheelchair, and to collect barrier information of each route for navigation Related to the system.

  2. Description of the Related Art Conventionally, arm strength (torque) by operating a hand rim of a user when using a wheelchair has been measured. Such arm force (torque) measurement is performed for the purpose of controlling the driving force of the electric assist based on the torque when the user operates the hand rim, for example, in a wheelchair having an electric assist function. ing.

For example, FIG. 6 is a diagram showing a wheelchair equipped with a conventional electric assist drive motor disclosed in Patent Document 1 and the like. In FIG. 6, 31 is a frame, 32 is a seating surface, 33 is a rear wheel, 33a is a wheel hub, 33b is a front wheel, 34 is a hand rim, and 34a is a hand rim hub. In the wheelchair shown in FIG. 6, when torque is applied to the hand rim 34 by a user's operation, the torque is transmitted to the hand rim hub 34a and the rod-like protrusions and sliders built in the wheel hub 33a connected thereto. Thus, the torque is detected by measuring the moving distance of the slider with a position sensor (refer to Patent Document 1 for details). The electric assist drive motor is controlled based on the detected torque. As described above, in the conventional example such as Patent Document 1, the hand rim 34 and the wheel 33 are connected to each other at the central hub portion, and the torque detecting device is also connected to the hand rim hub 34a and the wheel connected thereto. It was built in the hub 33a.
JP-A-10-000220

  However, the conventional torque detection device as proposed in Patent Document 1 has a structure that is continuously installed inside the hand rim hub and the wheel hub connected thereto as described above. It was not possible for a user to add a torque detector to the wheelchair later. Therefore, for example, when actually trying to move a wheelchair equipped with a torque detection device on a predetermined route and collecting barrier information on the route (information on difficulty or ease of traveling by wheelchair on the road surface), Wheelchair users had to use a special specification wheelchair with a built-in torque detection device from the beginning, and could not collect the above barrier information at low cost while using their own wheelchair familiar to them everyday. .

  The present invention has been made paying attention to such problems of the prior art, and while using a wheelchair that a wheelchair user is familiar with on a daily basis as it is, at low cost, accurately and stably. It is an object of the present invention to provide an arm strength measuring device when using a wheelchair, which can collect the barrier information, and a barrier information collecting system for each route using the device.

  An arm force measuring device when using a wheelchair according to the present invention for solving such a problem includes an annular hand rim arranged concentrically in parallel to the wheel on the outer side away from the wheelchair user of the rear wheel. A ring-shaped fixing plate disposed between the wheel and the hand rim in parallel and concentric with the wheel and fixed to the hand rim side of the wheel; and a side surface of the ring-shaped fixing plate on the hand rim side A support member projecting from at least three locations of the hand rim, which is in contact with the inner peripheral side of the hand rim so that the hand rim can be rotated in parallel and concentric with the ring-shaped fixing plate. Fixing in a state where the support member for supporting, and the hand rim and the ring-shaped fixing plate are fixed ("play (the range in which the user's operation does not affect the actual operation of the device)" is provided. A connecting member that connects the hand rim and the ring-shaped fixing plate so as to transmit torque, and includes at least one connecting member that includes a load cell for detecting torque from the hand rim; Thus, the arm strength of the user for turning the hand rim when using the wheelchair, that is, the degree of difficulty or ease of travel of each route (road surface or floor of the facility) when using the wheelchair (barrier information) ) Can be measured.

  The route barrier information collecting system according to the present invention includes an annular hand rim arranged concentrically in parallel with the wheel on the outer side away from the wheelchair user of the rear wheel, and the wheel and the hand rim. A ring-shaped fixing plate that is arranged in parallel and concentrically with respect to the wheel, and fixed to the hand rim side of the wheel, and at least three or more locations on the side surface of the ring-shaped fixing plate on the hand rim side A projecting support member, which is in contact with the inner peripheral side of the hand rim, and supports the hand rim so as to be pivotable in parallel and concentric with the ring-shaped fixing plate; By being fixed to the hand rim and the ring-shaped fixing plate (including fixing in a state where “play (a range where the user's operation does not affect the actual operation of the device)” is provided) An arm force measuring means comprising: a connecting member for connecting the hand rim and the ring-shaped fixing plate so as to transmit torque; and at least one connecting member having a built-in load cell for detecting torque from the hand rim; Current position specifying means including a GPS receiver provided in the wheelchair, detection data obtained by the arm force measuring means provided in the wheelchair and current position data obtained by the current position specifying means, In association with each other, for each predetermined time, “barrier information on the difficulty or ease of passage by wheelchair regarding position information on each route for navigation (road surface or floor of facility) and each route (road surface or floor of facility)” Means for transmitting wirelessly toward the server side that manages the database that records " And it is characterized in that it comprises a.

  In the present invention, the hand rim is rotatably provided in parallel and concentrically with respect to the wheel, and a ring-shaped fixing plate is fixed in parallel and concentrically on the hand rim side of the wheel. The ring-shaped fixing plate (and wheels) are connected by the connecting member so that torque can be transmitted, and a load cell for detecting torque from the hand rim is built in the connecting member. Therefore, according to the present invention, the load cell for detecting the arm force (that is, the torque of the hand rim) when the wheelchair user operates the hand rim can be easily applied to the normal wheelchair that each user uses on a daily basis. It can be added (added later) later. Therefore, the wheelchair user can detect the torque caused by the operation of the hand rim by the wheelchair user while using his / her wheelchair familiar to him / her everyday (as opposed to the hand rim by the wheelchair user). It is necessary to use a special wheelchair with built-in torque detection means in the center hub of the hand rim and wheels to detect and collect the barrier information of each route (road surface or floor surface of the facility) Because of this, wheelchair users could not use their own wheelchairs that they were used to on a daily basis.)

  In particular, in the present invention, a ring-shaped fixing plate is fixed in parallel and concentrically on the hand rim side of the wheel, and the hand rim is supported by a support member protruding from at least three locations of the ring-shaped fixing plate. Is connected to the ring-shaped fixing plate so as to be rotatable in parallel with and concentrically with the ring-shaped fixing plate, and the connecting member incorporating the load cell is fixed between the hand rim and the ring-shaped fixing plate. . That is, in the present invention, the support member is configured so that the hand rim is concentric and rotatable in parallel with the ring-shaped fixing plate (and the wheel fixed thereto), After securing such a state, "at least one connecting member" incorporating the load cell is used between the hand rim and the ring-shaped fixing plate (so that both can transmit torque). I try to connect them. Therefore, according to the present invention, the torque (barrier information) generated by the operation of the hand rim of the wheelchair user can be obtained only by using at least one of the connecting members containing the relatively expensive load cell (that is, at a very low cost). ) Can be measured and collected accurately and stably (on the other hand, if the ring-shaped fixing plate and the support member are not used, the connecting means (load cell) can be directly In the case of connecting between the hand rim and the wheel, in order to accurately and stably measure and collect the torque (barrier information) due to the operation of the hand rim of the wheelchair user, the relatively expensive Since it is necessary to prepare at least three or more connecting means with built-in load cells and fix them at an equal interval between the hand rim and the wheel, In other words, in order to accurately and stably measure and collect the torque (barrier information) generated by the operation of the hand rim of a wheelchair user, a problem arises that the cost for detecting the torque is extremely increased. Since it is necessary to detect the torque in a state where the hand rim can rotate in parallel and concentric with the wheel, if the ring-shaped fixing plate and the support member in the present invention are not used, It is necessary to fix at least three or more “connecting means incorporating a relatively expensive load cell” between the wheels (without three or more “connecting means containing a relatively expensive load cell” The hand rim cannot be brought into a state in which the hand rim can be rotated in parallel and concentric with the wheel, and the torque is accurately and stably detected. DOO since it becomes impossible), the cost for the detection of the torque will be extremely increased occurs).

  In particular, in the present invention, as described above, three or more support members projecting from the ring-shaped fixing plate are brought into contact with the inner peripheral side of the hand rim at equal intervals, whereby the hand rim Are supported concentrically and rotatably with respect to the ring-shaped fixing plate (and the wheel fixed thereto). Thus, in the present invention, almost all of the force (vertical force, etc.) other than the torque (force in the rotational direction) applied to the hand rim is received by the ring-shaped fixing plate and the support member. It becomes like this. Therefore, according to the present invention, the load cell of the connecting means can detect and measure only the torque (force in the rotational direction) applied to the hand rim accurately and stably (if this is the case) When three or more connecting means (load cells) are directly connected between the hand rim and the wheel (three or more places) without using the ring-shaped fixing plate and the support member. Not only the torque (force in the rotational direction) due to the operation of the hand rim of the wheelchair user but also the force other than the torque such as the vertical force when the wheelchair user pushes the hand rim downward from above. Since the connecting means (load cell) will detect, only the torque (force in the rotational direction) applied to the hand rim can be detected and measured accurately and stably. Kuna' and thus, there arises a problem).

  In the present invention, the hand rim and the ring-shaped fixing plate (and the wheel) are connected so as to be able to transmit torque by the connecting means incorporating the load cell as described above, and torque information (barrier information) detected by the load cell. Are transmitted to a server that manages the navigation database via a public communication network such as a mobile phone network, a wireless LAN, and the Internet at predetermined intervals in association with the current position information detected by the current position specifying means. I am doing so. As described above, in the present invention, the above-described barrier information is automatically obtained simply by traveling on each route (road surface or floor surface of the facility) using the wheelchair that the wheelchair user is familiar with on a daily basis. Can be measured and collected, and the measured and collected barrier information can be transmitted to the server together with the position information at that time in substantially real time. Therefore, according to the present invention, the wheelchair user can automatically use the wheelchair that he / she is accustomed to on a daily basis as it is, and it can be automatically and extremely low simply by traveling on each route (road surface or floor surface of the facility). The latest barrier information for each position can be sent to the server at a cost and recorded / updated in the navigation database at a cost (in contrast, conventionally, wheelchair users can In order to measure and collect the barrier information at each position while driving, it was necessary to use a special wheelchair with a built-in torque detection means in the hand rim and the central hub of the wheel. I couldn't use my wheelchair that I was used to.

  The best mode for carrying out the present invention is a mode as described in Example 1 below.

  Hereinafter, an arm strength measuring device when using a wheelchair according to Embodiment 1 of the present invention will be described. The wheelchair used in the first embodiment is basically the same as that shown in the conventional example. The difference is that a ring-shaped fixing plate (a metal or resin ring-shaped fixing plate provided with a support member projecting substantially in a pin shape to rotatably support the hand rim) is provided between the wheel and the hand rim. The ring-shaped fixing plate and the hand rim are connected by a connecting member including a load cell. This will be described below with reference to the drawings.

  FIG. 1 is a side view showing a wheelchair used in the first embodiment. In FIG. 1, 1 is a frame, 2 is a seating surface, 3 is a wheel (rear wheel), 4 is a hand rim (arranged concentrically in parallel with the wheel 3), and 5 is a ring-shaped fixing plate.

  2 is a perspective view showing a hand rim and a ring-shaped fixing plate of a wheelchair used in the first embodiment, and FIG. 3 is a side view thereof. 2 and 3, 5 is a ring-shaped fixing plate made of, for example, metal or resin and arranged concentrically in parallel with the hand rim 4, and 6 is a side surface of the ring-shaped fixing plate 5 on the hand rim 4 side. It is a substantially pin-shaped support member that protrudes from the four locations at equal intervals toward the hand rim side.

  Each of the substantially pin-shaped support members 6 is constituted by a pin-shaped roller that is rotatably installed on a side surface of the ring-shaped fixing plate 5 via a bearing (each of the substantially pin-shaped support members described above). The base (see FIG. 2) of the member 6 on the ring-shaped fixing plate 5 side includes a bearing that rotatably supports the roller. That is, each of the substantially pin-shaped support members (rollers) 6 is configured to be rotatable with respect to the side surface of the ring-shaped fixing plate 5. Each support member (roller) 6 is brought into contact with four surfaces on the inner peripheral surface side of the hand rim 4 at equal intervals from each other (see FIG. 2), so that the hand rim 4 is attached to the ring. It is concentrically parallel to the fixed plate 5 and is rotatably supported.

  In the first embodiment, the ring-shaped fixing plate 5 is fixed in parallel and concentric with the wheel 3 by a known means such as a screw (not shown).

  Next, FIG. 4 shows a first embodiment in which a load cell (not shown) and a short-range wireless unit (not shown) are built in one place between the hand rim 4 and the ring-shaped fixing plate 5 in the first embodiment. This shows a state in which a plurality of connecting members 7 are fixed (by fixing one connecting member 7 to both of them as described above, the hand rim 4 and the ring-shaped fixing plate 5 can transmit torque to each other. To be connected). The load cell built in the connecting member 7 is, for example, a case where a resistor such as a metal foil is attached to a strain body such as a steel material, and the strain body is deformed by a torque from a wheelchair user's hand rim operation. Accordingly, the torque is detected by taking out a change in resistance value due to the deformation of the resistor as an electric signal (note that the load cell is well known in the art and will not be described in detail). Further, the short-range wireless unit built in the connecting member 7 is a small wireless device compatible with a short-range wireless communication standard such as Blue Tooth (BT), and an electrical signal (torque signal) from the load cell. ) Is wirelessly transmitted to a control unit described later with reference to FIG. The outer portion of the connecting member 7 is a substantially box-shaped housing, for example, about the size of a cigarette box. Further, in the present embodiment, the hand rim 4 and the ring-shaped fixing plate 5 are connected to each other by the connecting member 7 so as to be able to transmit torque to each other. Loosely connected with “play” (similar to some “play” on a car handle, etc.). In the first embodiment, the connecting member 7 is fixed to the hand rim 4 and the ring-shaped fixing plate 5 with a predetermined “play”.

  In the first embodiment, a ring-shaped fixing plate 5 is fixed to the wheel 3 on the hand rim 4 side, and the ring-shaped fixing plate 5 is supported by substantially pin-shaped support members 6 protruding from four equally spaced locations. Since the hand rim 4 is supported so as to be rotatable in parallel and concentric with the ring-shaped fixing plate 5, there is only one connecting member 7 including the load cell and the short-range radio unit. By simply fixing between the hand rim 4 and the ring-shaped fixing plate 5, the torque (barrier information) due to the operation of the hand rim of the wheelchair user can be measured and collected accurately and stably to the control unit described later. Can be sent.

  Next, FIG. 5 is a conceptual block diagram showing an outline of the electrical configuration of the first embodiment. In FIG. 5, 11 is a GPS (Global Positioning System) receiver that is arranged in the main body of the wheelchair to identify the current position of the wheelchair outside, and 11 a is arranged in the main body of the wheelchair and is in the facility of the wheelchair. In order to identify the current location (indoor), the location information of each location transmitted wirelessly from wireless IC tags (not shown) installed at a plurality of locations in the facility is received, for example, 1 to several meters ahead A tag reader 12 is connected to the load member 7 for connecting the hand rim 4 and the ring-shaped fixing plate 5, and 13 is output from the load cell 12. BT wireless unit for wirelessly transmitting a signal to an external Bluetooth (BT) compatible wireless unit, 14 is a microcomputer attached to the main body side of the wheelchair The control unit 15 is a BT radio unit attached to the main body side of the wheelchair and is connected to the control unit 14 for wirelessly receiving a signal from the BT radio unit 13 on the load cell 12 side. Bluetooth (BT) compatible BT radio unit 16 is an input unit attached to the main body side of the wheelchair, and an input unit comprising a keyboard, a touch panel, etc. for wheelchair users to input predetermined information, A display unit attached to the main body of the wheelchair for displaying information from the control unit 14 and the like (for example, navigation information including a three-dimensional map) for a wheelchair user, 18 is the control unit 14 The external server 2 via a public communication network (for example, a mobile phone network and / or a wireless LAN and the Internet) 19 A transceiver unit for transmitting and receiving predetermined information (for example, mobile phones), it is.

  In FIG. 5, reference numeral 21 denotes a database connected to the server 20 for storing navigation information including a three-dimensional map. For example, each position information for each route (road surface or floor of facility). And a database for navigation for recording each barrier information in association with the wheelchair when traveling by wheelchair.

  Next, the operation of the first embodiment will be described. When a wheelchair user wishes to view road or facility navigation information outdoors or in a large facility, he / she operates the input unit 16 to obtain his current information obtained by the GPS receiver 11 or the tag reader 11a. Input request information including position information, desired destination information, own body characteristic information (for example, being a wheelchair user), etc. (the body characteristic information may be manually input from the input unit 16 by the user) It is also possible to take out what is recorded in advance in a memory not shown). Then, the control unit 14 transmits the input request information to the server 20 via the transmission / reception unit 18. The server 20 searches the database 21 based on the received request information, and is desired navigation information, for example, navigation information such as a three-dimensional map image indicating an optimum route suitable for the wheelchair user. Navigation information considering the body characteristic information and barrier information is transmitted to the wheelchair. The control unit 14 displays the navigation information transmitted from the server 20 on the display unit 17 (note that the control unit 14 is not shown before the navigation information is displayed on the display unit 17). Recorded in a memory or hard disk).

  Further, in the first embodiment, when the wheelchair user is traveling on the road or in the facility outdoors or in a large facility, the torque (or the hand rim 4 and the wheel by the torque when the wheel rim is operated). 3), the strain body of the load cell 12 is deformed. However, a change in resistance value corresponding to the amount of deformation is converted into a torque signal, and is output from the load cell 12 every predetermined time (for example, every few seconds). (Or every tens of seconds). That is, if the road surface or floor surface on which the wheelchair is traveling is flat, a certain relatively small torque signal is output, if the slope is uphill, a relatively large torque signal is output, and if it is an uneven surface, the size is severe. A fluctuating torque signal is output. Thus, in the first embodiment, the torque signal from the load cell 12 indicates the road surface and floor surface state where the wheelchair is traveling, that is, the barrier information on the road surface and floor surface when the wheelchair is traveling (the wheelchair traveling information) The degree of ease or difficulty) can be obtained sequentially.

  As described above, in the first embodiment, the torque information acquired by the load cell 12, that is, the barrier information is transmitted to the control unit 14 via the BT radio units 13 and 15 every predetermined time. It has become. The control unit 14 once records the received torque information (barrier information) in a memory (not shown) in association with the current position information at the time of each reception. And the said control part 14 is the state which matched each said torque information and each present position information which were recorded for every predetermined time (for example, every several minutes or every tens of minutes) mutually, The data is transmitted from the transmission / reception unit 18 to the server 20. The server 20 records / updates data related to the path of the database 21 as needed based on the received torque information (barrier information) and current position information. As a result, the database 21 includes barrier information on road surfaces and floor surfaces when traveling by wheelchair for each route in the outdoors or large facilities (ease of wheelchair access due to uneven surfaces, inclined surfaces, etc.) The latest data regarding the information) is always recorded and updated. Therefore, the wheelchair user can always use the navigation information in consideration of the latest barrier information related to the difficulty and ease of passage through the wheelchair of each route (road surface and floor surface).

  As described above, in the first embodiment, the ring-shaped fixing plate 5 is fixed to the hand rim 4 side of the wheel 3, and the hand rim 4 is supported by the four support members protruding from the ring-shaped fixing plate 5. Is rotatably supported with respect to the wheel 3, and the hand rim 4 and the ring-shaped fixing plate 5 (and the wheel 3) are torque-transmitted by the “connecting member 7 including the load cell 12 and the BT radio unit 13”. I try to connect them as possible. Therefore, according to the first embodiment, each user uses the load cell 12 (or the connecting member 7 including the same) for detecting the arm force when the wheelchair user operates the hand rim 4, that is, the torque of the hand rim 4, on a daily basis. It can be easily added to a normal wheelchair that is being used later. Therefore, the wheelchair user can detect the arm strength (that is, the torque of the hand rim 4) when the wheelchair user operates the hand rim 4 while using his / her wheelchair familiar to him / her everyday.

  In particular, in the first embodiment, the ring-shaped fixing plate 5 and the four support members 6 cause the hand rim 4 to move against the ring-shaped fixing plate 5 (and the wheel 3 fixed thereto). The connecting member 7 containing the load cell 12 is fixed between the hand rim 4 and the ring-shaped fixing plate 5 after ensuring that it is parallel and concentric and rotatable. Yes. Therefore, according to the first embodiment, only one connecting member 7 including the relatively expensive load cell 12 is used (that is, at a very low cost), and the wheel rim user can operate the hand rim 4. Torque (barrier information) can be measured and collected accurately and stably.

  In particular, in the first embodiment, as described above, the four support members (rollers) 6 protruding from the ring-shaped fixing plate 5 are provided on the inner peripheral surface of the hand rim 4, etc. By abutting at intervals (see FIG. 2), the hand rim 4 is rotatably supported in parallel and concentrically with respect to the ring-shaped fixing plate 5 (and the wheel 3 fixed thereto). I have to. Thus, in the first embodiment, almost all of the force (vertical force, etc.) other than the torque (force in the rotation direction) applied to the hand rim 4 is supported by the ring-shaped fixing plate 5. It can be received by the member 6. Therefore, according to the first embodiment, the load cell 12 of the connecting member 7 can accurately and stably detect and measure only the torque (force in the rotation direction) applied to the hand rim 4 (to this). On the other hand, if three or more connecting means (load cells) are directly connected between the hand rim 4 and the wheel 3 without using the ring-shaped fixing plate 5 and the support member 6. In this case, not only the torque (force in the turning direction) due to the operation of the hand rim 4 of the wheelchair user but also other than the torque such as the vertical force when the wheelchair user pushes the hand rim 4 downward from above. Since the connecting means 7 (the load cell 12 incorporated therein) also detects the force, only the torque (force in the rotational direction) applied to the hand rim 4 can be accurately and No longer can be detected and measured in a stable manner, there arises a problem).

  Furthermore, in the first embodiment, the hand rim 4 and the ring-shaped fixing plate 5 (and the wheel 3) are connected so as to be able to transmit torque by the connecting member 7 incorporating the load cell 12 as described above. A server that manages the database 21 for navigation via the public communication network 19 every predetermined time by associating the detected torque information (barrier information) with the current position information acquired by the GPS receiver 11 or the tag reader 11a. It is trying to transmit to 20. As described above, in the first embodiment, the wheelchair user can use his or her wheelchair that he / she is familiar with on a daily basis, and actually travels on the route (the road surface or the floor of the facility) at every predetermined time. The barrier information can be automatically measured and collected, and the barrier information thus measured and collected can be transmitted to the server 20 together with the position information at that time. Therefore, according to the first embodiment, the wheelchair user can automatically travel on the route (the road surface or the floor surface of the facility) while using his / her own wheelchair that he / she is familiar with everyday. Barrier information for each position can be transmitted to the server in substantially real time at a very low cost, and the recorded contents of the navigation database 21 can be updated to the latest state.

  As mentioned above, although the Example of this invention was described, this invention is not limited to what was described as the said Example, A various correction and change are possible. For example, in the first embodiment, the number of support members (rollers) 6 of the ring-shaped fixing plate 5 for supporting the hand rim 4 (locations where the support members 6 project) is four in total. However, the present invention is not limited to this, and may be at least three. In the first embodiment, a method of using the wireless IC tag and the tag reader 11a is used to acquire each position information of the wheelchair user in the large facility. For example, the current position of a wheelchair user is based on the principle of triangulation similar to a positioning system using a GPS receiver by simultaneously receiving radio waves from transmitters installed at multiple locations in a facility. It goes without saying that various methods such as obtaining the above can be used. In the first embodiment, the tag reader 11a is provided on the wheelchair side and the IC tag is provided on the facility side. However, in the present invention, the IC tag is provided on the wheelchair side and the tag reader 11a is provided on the facility side. The tag reader 11a that has received the signal from the IC tag may transmit its position signal to the wheelchair side (the receiver). In the embodiment, the hand rim 4 is rotatably supported by the support member (roller) 6 with respect to the ring-shaped fixing plate 5. However, the present invention is not limited to this. For example, the hand rim 4 and another disk (ring-shaped board) are fixed in advance, and the other disk (ring-shaped board) is rotatably supported by the support member (roller) 6. (In this case as well, the hand rim 4 rotates with respect to the ring-shaped fixing plate 5 via the support member (roller) 6 and the other disk (ring-shaped plate). Will be supported freely). Moreover, in the said Example, although the said hand rim 4 and the said ring-shaped fixing plate 5 are connected so that torque transmission is possible with the one connection member 7, in the present invention, the said connection members 7 are two pieces etc. Of course, a plurality of these may be used.

The schematic side view which shows the wheelchair provided with the arm force measuring apparatus at the time of the wheelchair use by Example 1 of this invention. FIG. 3 is a perspective view illustrating a hand rim and a ring-shaped fixing plate according to the first embodiment. The side view which shows the hand rim and ring-shaped fixing plate in the present Example 1. FIG. The side view which shows the hand rim | limb in this Example 1, a ring-shaped fixing plate, and a connection member. 1 is a schematic block diagram illustrating an electrical configuration of a first embodiment. The side view which shows the conventional wheelchair.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame 2 Seat surface 3 Wheel 4 Hand rim 5 Ring-shaped fixing plate 6 Support member 7 Connecting member 11 GPS receiver (current position specifying part)
11a Tag reader (current position specifying part)
12 Load cells 13 and 15 BT radio unit 14 Control unit 16 Input unit 17 Display unit 18 Transmission / reception unit 19 Public communication network 20 Server 21 Navigation database

Claims (2)

An annular hand rim disposed concentrically and parallel to the wheel on the outside of the wheel behind the wheelchair away from the wheelchair user;
A ring-shaped fixing plate disposed between the wheel and the hand rim in parallel and concentric with the wheel, and fixed to the hand rim side of the wheel;
A support member that protrudes from at least three locations on the side surface of the ring-shaped fixing plate on the hand rim side, and is in contact with the inner peripheral side of the hand rim so that the hand rim is in contact with the ring-shaped fixing plate. A support member for rotatably supporting in parallel and concentric circles;
A connecting member for connecting the hand rim and the ring-shaped fixing plate so as to transmit torque by being fixed to the hand rim and the ring-shaped fixing plate, and having a built-in load cell for detecting the torque of the hand rim At least one connecting member;
The wheelchair is characterized in that it detects the arm strength of the user for turning the hand rim when using the wheelchair, that is, the barrier information relating to the difficulty or ease of travel when traveling by the wheelchair. Arm strength measuring device when in use. An annular hand rim disposed concentrically and parallel to the wheel on the outside of the wheelchair behind the wheelchair user, and parallel to the wheel and concentric between the wheel and the hand rim A ring-shaped fixing plate that is arranged in a shape and fixed to the hand rim side of the wheel, and a support member that protrudes from at least three locations on the side surface of the ring-shaped fixing plate on the hand rim side, A support member that is in contact with the inner peripheral side of the hand rim and supports the hand rim in a concentric and rotatable manner parallel to the ring-shaped fixing plate, and fixed to the hand rim and the ring-shaped fixing plate. A connecting member for connecting the hand rim and the ring-shaped fixing plate so as to be able to transmit torque, and for detecting torque from the hand rim A physical force measuring device comprising at least one coupling member which incorporates,
Current position specifying means provided in the wheelchair and including a GPS receiver,
The wheelchair equipped with the detection data obtained by the arm force measurement means and the current position data obtained by the current position specifying means are associated with each other at intervals of “position information on navigation route and Transmission means for wirelessly transmitting to the server side managing the database that records the barrier information relating to difficulty or ease of travel during wheelchair traffic on the route in association with each other;
A system for collecting barrier information about a route.

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