WO2023042863A1 - 固定部材、ベッド用の支持構造体、及びベッド - Google Patents

固定部材、ベッド用の支持構造体、及びベッド Download PDF

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Publication number
WO2023042863A1
WO2023042863A1 PCT/JP2022/034459 JP2022034459W WO2023042863A1 WO 2023042863 A1 WO2023042863 A1 WO 2023042863A1 JP 2022034459 W JP2022034459 W JP 2022034459W WO 2023042863 A1 WO2023042863 A1 WO 2023042863A1
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WO
WIPO (PCT)
Prior art keywords
upper frame
bed
supported member
fixture
supported
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2022/034459
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English (en)
French (fr)
Japanese (ja)
Inventor
奎 李
学 田中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MinebeaMitsumi Inc
Original Assignee
MinebeaMitsumi Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MinebeaMitsumi Inc filed Critical MinebeaMitsumi Inc
Priority to CN202280071545.4A priority Critical patent/CN118234461B/zh
Priority to US18/690,772 priority patent/US12193980B2/en
Priority to EP22870010.0A priority patent/EP4403155B1/en
Publication of WO2023042863A1 publication Critical patent/WO2023042863A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/012—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame raising or lowering of the whole mattress frame
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G13/00—Operating tables; Auxiliary appliances therefor
    • A61G13/02—Adjustable operating tables; Controls therefor
    • A61G13/06—Adjustable operating tables; Controls therefor raising or lowering of the whole table surface
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05—Parts, details or accessories of beds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2203/00—General characteristics of devices
    • A61G2203/30—General characteristics of devices characterised by sensor means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2203/00—General characteristics of devices
    • A61G2203/30—General characteristics of devices characterised by sensor means
    • A61G2203/44—General characteristics of devices characterised by sensor means for weight

Definitions

  • the present invention relates to a fixing member, a support structure for a bed, and a bed.
  • Japanese Patent Laid-Open No. 2002-200001 discloses placing a plurality of load detectors between the lower frame of the bed and the lifting support mechanism.
  • Patent Document 1 it is necessary to use a specially structured load sensor or modify the bed structure in order to incorporate the load sensor into the bed. Therefore, the manufacturing cost of a bed with a built-in load sensor is high, which hinders the spread of the bed with a built-in load sensor.
  • an object of the present invention is to provide a fixing member and a support structure that allow easy manufacture of a bed equipped with a load detection function.
  • a securing member for use in a support structure for a bed comprising:
  • the support structure includes a lower frame, an upper frame, an elevating mechanism for elevating the upper frame with respect to the lower frame and having a support shaft extending in the width direction of the bed;
  • a support structure having a supported member supported by the support shaft, the support shaft moving along the longitudinal direction of the bed while supporting the supported member when the upper frame is raised and lowered,
  • the fixing member is a plurality of fixtures for fixing the supported member to the upper frame; each of the plurality of fixtures includes a strain-generating body having one end fixed to the upper frame and the other end fixed to the supported member;
  • a fixed member is provided having a strain gauge attached to the strain body.
  • a support structure for a bed comprising: a lower frame; an upper frame; an elevating mechanism for elevating the upper frame with respect to the lower frame, the elevating mechanism having a support shaft extending in the width direction of the bed; a supported member supported by the support shaft; a fixture that fixes the supported member to the upper frame; The fixture has a strain body with one end fixed to the upper frame and the other end fixed to the supported member, and a strain gauge attached to the strain body,
  • a support structure is provided in which the support shaft moves along the longitudinal direction of the bed while supporting the supported member when the upper frame is raised and lowered.
  • the fixing member and the bed support structure of the present invention it is possible to easily manufacture a bed equipped with a load detection function.
  • FIG. 1(a) and FIG. 1(b) are schematic diagrams of a bed according to an embodiment of the present invention as seen from the lateral direction.
  • FIG. 1(a) shows the state in which the upper frame is in the lowered position
  • FIG. 1(b) shows the state in which the upper frame is in the raised position.
  • FIGS. 1(a) and 1(b) see through a part of the configuration to explain the operation of the bed.
  • 2(a) is a plan view of the lower mechanism
  • FIG. 2(b) is a plan view of the lifting mechanism
  • FIG. 2(c) is a plan view of the upper mechanism.
  • 3(a) and 3(b) are perspective views of the sliding bracket attached to the lower frame.
  • FIG. 1(a) shows the state in which the upper frame is in the lowered position
  • FIG. 1(b) shows the state in which the upper frame is in the raised position.
  • FIGS. 1(a) and 1(b) see through a part of the configuration to explain the
  • FIG. 4 is a perspective view of a fixed bracket attached to the lower frame; 5(a) and 5(b) are perspective views of the sliding bracket attached to the upper frame.
  • FIG. 6(a) is a perspective view showing a structure in which four load sensors are used to fix the sliding bracket to the upper frame.
  • FIG. 6(b) is a side view showing a structure in which four load sensors are used to fix the slide bracket to the upper frame.
  • FIG. 7 is a perspective view of a fixed bracket attached to the upper frame;
  • FIG. 8(a) is a perspective view showing a structure in which a fixing bracket is fixed to the upper frame using four load sensors.
  • FIG. 8(b) is a side view showing a structure in which a fixing bracket is fixed to the upper frame using four load sensors.
  • FIG. 9(a) is a perspective view showing a modification of the structure in which the sliding bracket is fixed to the upper frame using the load sensor.
  • FIG. 9(b) is a side view showing a modification of the structure in which the sliding bracket is fixed to the upper frame using the load sensor.
  • FIG. 1 A bed BD, a support structure 100, and a load sensor kit (fixing member) according to an embodiment of the present invention will be described with reference to FIGS. 1 to 8.
  • FIG. 1 A bed BD, a support structure 100, and a load sensor kit (fixing member) according to an embodiment of the present invention will be described with reference to FIGS. 1 to 8.
  • FIG. 1 A load sensor kit (fixing member) according to an embodiment of the present invention
  • the bed BD includes a support structure 100 having a lower mechanism 10, an upper mechanism 20, and an elevating mechanism 30, and the upper mechanism 20 of the support structure 100. It mainly has a floorboard BP, a headboard HB, a footboard FB, and a pair of bed rails BR.
  • the longitudinal direction of the bed BD is the vertical direction of the bed BD and the support structure 100
  • the width direction of the bed BD is the lateral direction of the bed BD and the support structure 100.
  • the side on which the headboard HB is positioned is the head side
  • the side on which the footboard FB is positioned is the leg side.
  • the left side and the right side when viewed from the leg side in the vertical direction to the head side are defined as the left side and the right side, respectively.
  • a vertical direction is a direction perpendicular to the vertical direction and the horizontal direction.
  • the lower mechanism 10 mainly has a lower frame (base frame) 11 , sliding brackets 121 and 122 , fixed brackets 131 and 132 , actuator support beams 14 and four caster parts 15 . .
  • the lower frame 11 is a rectangular frame member in plan view, and includes a first portion 111 and a second portion 112 extending in the vertical direction of the support structure 100 and a third portion 113 and a third portion extending in the horizontal direction of the support structure 100 . 4 portion 114 .
  • Each of the first to fourth portions 111 to 114 is a longitudinal member having a rectangular cross section.
  • the sliding bracket 121 is an elongated member, and as shown in FIG. 3A, an upper plate portion 121a, a lower plate portion 121b, and a vertical plate portion 121c, each of which is an elongated flat plate, are viewed in the longitudinal direction. It has a U-shaped (U-shaped) connected shape.
  • the longitudinal dimension of the upper plate portion 121a is smaller than the longitudinal dimension of the lower plate portion 121b and the vertical plate portion 121c.
  • the sliding bracket 122 is a long member, and as shown in FIG. When viewed, it has a U-shaped (U-shaped) connected shape.
  • the longitudinal dimension of the upper plate portion 122a is smaller than the longitudinal dimension of the lower plate portion 122b and the vertical plate portion 122c.
  • the sliding bracket 121 and the sliding bracket 122 are mirror-symmetrical with respect to a plane parallel to the vertical plate portions 121c and 122c.
  • the sliding brackets 121 and 122 are attached to the lower frame 11 on the head side of the central portion of the support structure 100 in the longitudinal direction.
  • the sliding brackets 121 and 122 are respectively fixed to the first part 111 and the second part 112 such that the longitudinal direction of the sliding brackets 121 and 122 coincides with the vertical direction of the support structure 100 .
  • the outer surface of the vertical plate portion 121c of the slide bracket 121 is in contact with and welded to the inner surface 111i of the first portion 111
  • the outer surface of the vertical plate portion 122c of the slide bracket 122 is welded to the second portion 112. is welded in contact with the inner surface 112i of the .
  • the fixed bracket 131 has a pair of flat plate portions 131a facing each other, and a curved plate portion 131b curved in an arc around an axis 131x to connect the lower ends of the pair of flat plate portions 131a.
  • the fixed bracket 13 is substantially U-shaped when viewed in the direction of the axis 131x.
  • the fixed bracket 132 has a pair of flat plate portions 132a facing each other, and a curved plate portion 132b curved in an arc around the axis 132x and connecting the lower ends of the pair of flat plate portions 132a.
  • the fixed bracket 132 is substantially U-shaped when viewed in the direction of the axis 132x.
  • the fixed brackets 131 and 132 are attached to the lower frame 11 at positions closer to the legs than the central portion of the support structure 100 in the vertical direction.
  • the fixed bracket 131 is fixed by welding to the inner surface 111i of the first portion 111 with the axis 131x aligned with the lateral direction of the support structure 100 .
  • the fixed bracket 132 is fixed by welding to the inner surface 112i of the second portion 112 with the axis 132x aligned with the lateral direction of the support structure 100. As shown in FIG.
  • the actuator support beam 14 is a longitudinal member with a circular cross section extending in the lateral direction of the support structure 100 .
  • the left end of the actuator support beam 14 is fixed to the first portion 111 of the lower frame 11 on the head side of the slide bracket 121 .
  • the right end of the actuator support beam 14 is fixed to the second portion 112 of the lower frame 11 on the head side of the slide bracket 122 .
  • each of the four caster portions 15 includes a wheel support portion WS attached to the lower frame 11 so as to be rotatable about a vertical axis and a wheel support portion WS which is rotatable about a horizontal axis. and a wheel W attached to WS.
  • the upper mechanism 20 includes an upper frame (center frame) 21, sliding brackets 221 and 222, fixed brackets 231 and 232, sliding brackets 221 and 222, and fixed brackets 231 and 232. It mainly has a plurality of load sensors for mounting on the frame 21 .
  • the upper frame 21 is a rectangular frame member in plan view, and includes a first portion 211 and a second portion 212 extending in the vertical direction of the support structure 100 and a third portion 213 and a third portion 213 extending in the horizontal direction of the support structure 100 . 4 portion 214 .
  • Each of the first to fourth portions 211 to 214 is a longitudinal member having a rectangular cross section.
  • the sliding bracket (supported member) 221 is an elongated member, and as shown in FIG. It has a U-shaped (U-shaped) connected shape when viewed in the longitudinal direction.
  • the lengthwise dimension of the lower plate portion 221b is smaller than the lengthwise dimension of the upper plate portion 221a and the vertical plate portion 221c. Therefore, the lower plate portion 221b facing the upper plate portion 221a does not exist near one end portion of the upper plate portion 221a in the longitudinal direction.
  • the sliding bracket (supported member) 222 is also an elongated member, and as shown in FIG. are connected in a U-shape (U-shape) when viewed in the longitudinal direction.
  • the longitudinal dimension of the lower plate portion 222b is smaller than the longitudinal dimension of the upper plate portion 222a and the vertical plate portion 222c. Therefore, the lower plate portion 222b facing the upper plate portion 222a does not exist near one end portion of the upper plate portion 222a in the longitudinal direction.
  • the sliding bracket 221 and the sliding bracket 222 are mirror-symmetrical with respect to a plane parallel to the vertical plate portions 221c and 222c.
  • the sliding bracket 221 has four load sensors (fixtures) on the head side of the support structure 100 relative to the center in the longitudinal direction. ) to the first portion 211 of the upper frame 21 by means of S11, S12, S13, S14.
  • Each of the load sensors S11 to S14 has a beam-shaped strain-generating body SB and a strain gauge SG attached to the strain-generating body SB.
  • the attachment of the sliding bracket 221 to the upper frame 21 using the four load sensors S11 to S14 is specifically performed as follows.
  • the sliding bracket 221 is arranged so that the longitudinal direction of the sliding bracket 221 coincides with the longitudinal direction of the support structure 100 (that is, the longitudinal direction of the bed BD). In this state, the upper surface of the first portion 211 of the upper frame 21 and the upper surface of the upper plate portion 221a are flush with each other, and the lower surface of the first portion 211 of the upper frame 21 and the lower surface of the lower plate portion 221b are flush with each other. be.
  • the four load sensors S11, S12, S13, and S14 are mounted on the upper side of one longitudinal end of the sliding bracket 221, the lower side of the one longitudinal end, the upper side of the other longitudinal end, and the other longitudinal end. provided on the lower side of each side.
  • One end of the strain generating body SB of the load sensor S11 is fixed to the upper plate portion 221a on one end side in the longitudinal direction of the slide bracket 221, and the other end is fixed to the upper surface of the first portion 211.
  • One end of the strain generating body SB of the load sensor S12 is fixed to the lower plate portion 221b at one end in the longitudinal direction of the slide bracket 221, and the other end is fixed to the lower surface of the first portion 211.
  • One end of the strain generating body SB of the load sensor S13 is fixed to the upper plate portion 221a at the other end in the longitudinal direction of the slide bracket 221, and the other end is fixed to the upper surface of the first portion 211.
  • One end of the strain generating body SB of the load sensor S14 is fixed to the lower plate portion 221b on the other end side of the sliding bracket 221 in the longitudinal direction, and the other end is fixed to the lower surface of the first portion 211.
  • the inner surface 211i of the first portion 211 and the vertical plate portion 221c are arranged parallel to each other with a gap in the lateral direction.
  • the gap can be about 5 mm to 15 mm.
  • the sliding bracket 222 is also in the same manner as the sliding bracket 221 and is mounted on the second side of the upper frame 21 by four load sensors S11, S12, S13, S14 on the head side of the longitudinal center of the support structure 100. Attached to portion 212 .
  • the fixed bracket (secondary supported member) 231 includes a pair of flat plate portions 231a that face each other and a curved portion that connects the upper ends of the pair of flat plate portions 231a by bending in an arc around a shaft 231x. and a plate portion 231b.
  • the fixed bracket 231 is substantially U-shaped when viewed in the direction of the axis 231x.
  • the fixed bracket (secondary supported member) 232 similarly includes a pair of flat plate portions 232a that face each other and a curved plate portion 232b that is curved in an arc around a shaft 232x and connects the upper ends of the pair of flat plate portions 232a. have.
  • the fixed bracket 232 is substantially U-shaped when viewed in the direction of the axis 232x.
  • the fixing bracket 231 includes two connectors 24 and four load sensors ( It is attached to the first portion 211 of the upper frame 21 via sub-attachments S21, S22, S23, and S24.
  • Each of the two connectors 24 has an upper plate portion 24a, a lower plate portion 24b facing the upper plate portion 24a, and a vertical plate portion 24c connecting the upper plate portion 24a and the lower plate portion 24b. It is a U-shaped (U-shaped) member.
  • Each of the four load sensors S21-S24 has the same structure as the load sensors S11-S14, and has a beam-shaped strain-generating body SB and a strain gauge SG attached to the strain-generating body SB.
  • the attachment of the fixing bracket 231 to the upper frame 21 using the two connectors 24 and the four load sensors S21 to S24 is specifically performed as follows.
  • the outer surface of the vertical plate portion 24c of the connector 24 is in contact with and fixed to the outer surface of each of the pair of flat plate portions 231a of the fixed bracket 231 .
  • the fixed bracket 231 and the two connecting tools 24 are arranged so that the curved plate portion 231b of the fixed bracket 231 protrudes upward.
  • the upper surface of the first portion 211 of the upper frame 21 and the upper surface of the upper plate portion 24a of the two connectors 24 are flush with each other, and the lower surface of the first portion 211 of the upper bracket 21 and the two connectors 24 are flush with each other. is flush with the lower surface of the lower plate portion 24b.
  • the four load sensors S21, S22, S23, and S24 are provided above and below one connector 24 and above and below the other connector 24, respectively.
  • One end of the strain generating body SB of the load sensor S21 is fixed to the upper plate portion 24a of one connector 24, and the other end is fixed to the upper surface of the first portion 211.
  • One end of the strain generating body SB of the load sensor S22 is fixed to the lower plate portion 24b of one of the connecting members 24, and the other end is fixed to the lower surface of the first portion 211.
  • One end of the strain generating body SB of the load sensor S23 is fixed to the upper plate portion 24a of the other connector 24, and the other end is fixed to the upper surface of the first portion 211.
  • One end of the strain generating body SB of the load sensor S24 is fixed to the lower plate portion 24b of the other connector 24, and the other end is fixed to the lower surface of the first portion 211.
  • the inner surface 211i of the first portion 211 and the fixing bracket 231 are arranged parallel to each other with a gap in the lateral direction.
  • the gap can be about 5 mm to 15 mm.
  • the fixed bracket 232 is also attached to the leg side of the support structure 100 with respect to the longitudinal central portion thereof, via the two connectors 24 and the four load sensors S21, S22, S23, S24. It is attached to the second portion 212 of the frame 21 .
  • the lifting mechanism 30 mainly has an inner arm portion 31, an outer arm portion 32, and an actuator 33.
  • the inner arm portion 31 includes a lower shaft 311 (in FIG. 2(b), an upper shaft 322 (described later) of the outer arm portion 32). (underneath and not shown), an upper shaft 312 , a pair of inner arms 313 , and an actuator connecting beam 314 .
  • the lower shaft 311 is a longitudinal member with a circular cross section extending in the lateral direction of the support structure 100 .
  • the left end of the lower shaft 311 abuts on the upper surface of the curved plate portion 131 b of the fixed bracket 131 fixed to the first portion 111 of the lower frame 11 and is supported by the fixed bracket 131 .
  • the right end of the lower shaft 311 abuts on the upper surface of the curved plate portion 132 b of the fixed bracket 132 fixed to the second portion 112 of the lower frame 11 and is supported by the fixed bracket 132 .
  • the upper shaft (support shaft) 312 is a longitudinal member with a circular cross section that extends in the lateral direction of the support structure 100 .
  • the left end of the upper shaft 312 contacts the lower surface of the upper plate portion 221a of the sliding bracket 221 fixed to the first portion 211 of the upper frame 21, and supports the upper mechanism 20 via the sliding bracket 221.
  • the right end of the upper shaft 312 contacts the lower surface of the upper plate portion 222a of the sliding bracket 222 fixed to the second portion 212 of the upper frame 21, and supports the upper mechanism 20 via the sliding bracket 222.
  • Each of the pair of inner arms 313 is a longitudinal member with a rectangular cross section. One end of one of the pair of inner arms 313 is connected near the left end of the lower shaft 311 and the other end is connected near the left end of the upper shaft 312 . The other of the pair of inner arms 313 has one end connected near the right end of the lower shaft 311 and the other end connected near the right end of the upper shaft 312 .
  • the actuator connection beam 314 is a longitudinal member with a circular cross section extending in the lateral direction of the support structure 100 .
  • the left end portion of the actuator connecting beam 314 is connected to one of the pair of inner arms 313 at a longitudinally central portion of the inner arm 313 and a substantially intermediate portion between the connection portion between the inner arm 313 and the upper shaft 312 .
  • the right end of the actuator connecting beam 314 is connected to the other of the pair of inner arms 313 , and to a substantially intermediate portion between the longitudinally central portion of the inner arm 313 and the connecting portion between the inner arm 313 and the upper shaft 312 .
  • the outer arm portion 32 includes a lower shaft 321 (not shown in FIG. 2B, which is below an upper shaft 312 (described later) of the inner arm portion 31), an upper shaft 322, and a pair of outer arms 323. have.
  • the lower shaft 321 is a longitudinal member with a circular cross section extending in the lateral direction of the support structure 100 .
  • the left end of the lower shaft 321 contacts the lower plate portion 121b of the sliding bracket 121 fixed to the first portion 111 of the lower frame 11 and is supported by the sliding bracket 121 .
  • the right end of the lower shaft 321 contacts the upper surface of the lower plate portion 122b of the sliding bracket 122 fixed to the second portion 112 of the lower frame 11 and is supported by the sliding bracket 122 .
  • the upper shaft (sub-support shaft) 322 is a longitudinal member with a circular cross section that extends in the lateral direction of the support structure 100 .
  • the left end of the upper shaft 322 abuts on the lower surface of the curved plate portion 231b of the fixed bracket 231 fixed to the first portion 211 of the upper frame 21 to support the upper mechanism 20 via the fixed bracket 231 .
  • the right end of the upper shaft 322 contacts the lower surface of the curved plate portion 232b of the fixed bracket 232 fixed to the second portion 212 of the upper frame 21, and supports the upper mechanism 20 via the fixed bracket 232.
  • Each of the pair of outer arms 323 is a longitudinal member with a rectangular cross section. One end of one of the pair of outer arms 323 is connected near the left end of the lower shaft 321 and the other end is connected near the left end of the upper shaft 322 . The other of the pair of outer arms 323 has one end connected near the right end of the lower shaft 321 and the other end connected near the right end of the upper shaft 322 .
  • the inner arm section 31 and the outer arm section 32 are pivotally connected to each other. Specifically, in the lateral direction of the support structure 100, the inner arm 313 and the outer arm 323 located on the left side are pivotally connected by a horizontal pin P at their respective longitudinal central portions, and Situated inner arm 313 and outer arm 323 are pivotably connected by a horizontal pin P at their respective longitudinal centers.
  • the actuator 33 has a cylinder 331 and a rod 332 that is extended and retracted by the cylinder 331 .
  • Actuator 33 can be, for example, an electric actuator, a hydraulic actuator, a pneumatic actuator, or the like.
  • the cylinder 331 is pivotally supported by the actuator support beam 14 of the lower mechanism 10 .
  • the tip of the rod 332 is pivotably connected to the actuator connecting beam 314 of the inner arm portion 31 .
  • Each of the floorboard BP, the headboard HB, the footboard FB, and the pair of bed rails BR is detachably attached to the upper frame 21 via an attachment portion (not shown) provided on the upper frame 21 of the upper mechanism 20. (Fig. 1(a), Fig. 1(b)).
  • a load sensor kit (fixing member) is composed of the load sensors S21 to S24.
  • the pair of inner arms 313 rotate around the lower shaft 311 supported by the fixed brackets 131 and 132 of the lower mechanism 10 , and the upper shaft 312 slides inside the sliding brackets 221 and 222 of the upper mechanism 20 . pushes the sliding brackets 221 and 222 upward.
  • a pair of outer arms 323 pivotably connected to a pair of inner arms 313 rotate about an upper shaft 322 supported by fixed brackets 231 and 232 of the upper mechanism 20, causing the lower mechanism 10 to slide.
  • a lower shaft 321 sliding inside the brackets 121, 122 pushes the sliding brackets 121, 122 downward.
  • the upper shaft 322 pushes up the fixing brackets 231 and 232 of the upper mechanism 20 .
  • the load sensors S11 to S14 are provided outside the movable range of the upper shaft 312 in the sliding brackets 221 and 222.
  • the load sensors S13 and S14 attached to the sliding brackets 221 and 222 at positions on the leg side of the support structure 100 are arranged on the leg side of the center of the upper shaft 312 when the upper mechanism 20 is in the raised position. (that is, the points at which the loads of the brackets 221 and 222 act on the load sensors S13 and S14 are located on the leg side of the center of the upper shaft 312).
  • the load can be detected with high accuracy regardless of whether the upper mechanism 20 is at any position (height) including the lowered position and the raised position. The reason is as follows.
  • the detected values of the load sensors S11 to S14 are summed (details will be described later).
  • the load sensors S11 to S14 are arranged only on one side of the upper shaft 312 in the vertical direction and the detected values of the load sensors S11 to S14 are summed, the eccentric error ( The influence of the error occurring in the detected value of the load sensor according to the distance between the load sensor and the subject) is also added and becomes large.
  • the load sensors S11 to S14 are arranged on both sides of the upper shaft 312 regardless of the position of the upper shaft 312. As a result, the influence of the eccentricity error is canceled out and suppressed.
  • the load of the subject S on the bed BD is measured (detected) as follows.
  • the load sensors S11 to S14 that fix the sliding bracket 221 to the upper frame 21 constitute the first load detection section LS1.
  • a calculation unit (not shown, for example, attached to the upper frame 21) of the support structure 100 sums the output values of the load sensors S11 to S14 of the first load detection unit LS1, and obtains the output value of the first load detection unit LS1. get
  • the load sensors S11 to S14 for fixing the sliding bracket 222 to the upper frame 21 constitute a second load detection section LS2, and the calculation section sums the output values of the load sensors S11 to S14 of the second load detection section LS2. to obtain the output value of the second load detector LS2.
  • the load sensors S21 to S24 for fixing the fixed bracket 231 to the upper frame 21 constitute a third load detection section LS3, and the calculation section sums the output values of the load sensors S21 to S24 of the third load detection section LS3 to obtain a third load. 3 Obtain the output value of the load detector LS3.
  • the load sensors S21 to S24 for fixing the fixed bracket 232 to the upper frame 21 constitute a fourth load detection section LS4, and the calculation section sums the output values of the load sensors S21 to S24 of the fourth load detection section LS4 to obtain a 4 Obtain the output value of the load detector LS4.
  • the calculation unit sums the output values of the first load detection unit LS1 to the fourth load detection unit LS4 to calculate the weight of the subject on the bed BD.
  • the position of the center of gravity of the subject on the bed BD is calculated using the output values of the first load detection section LS1 to the fourth load detection section LS4.
  • the sliding brackets 221 and 222 and the fixed brackets 231 and 232 are fixed to the upper frame 21 using the load sensors S11 to S14 and S21 to S24, thereby allowing the bed to move.
  • the supporting structure incorporates a load detector that detects the load of the subject on the bed. Therefore, a bed support structure having a load detection function can be easily manufactured without manufacturing a bracket or a load sensor having a special structure.
  • the brackets are fixed to the frame using the load sensors S11 to S14 and S21 to S24, not in the lower mechanism 10 but in the upper mechanism 20. Therefore, all of the subject's load on the floor plate BP of the bed BD is transmitted to one of the load sensors S11 to S14 and S21 to S24, and the subject's load can be detected with high accuracy. If the brackets were fixed to the frame using the load sensors S11 to S14 and S21 to S24 in the lower mechanism 10, it would be difficult to detect the subject's load with high accuracy. This supports the lower part of the cylinder 331 of the actuator 33 by the lower mechanism 10, and part of the subject's load on the floor plate BP applied to the upper mechanism 20 is transmitted to the lower mechanism 10 via the actuator 33. to put away.
  • the longitudinal dimension of the upper plate portions 121a and 122a of the sliding brackets 121 and 122 is smaller than the longitudinal dimension of the lower plate portions 121b and 122b.
  • the longitudinal dimension of the lower plate portions 221b and 222b (the upper surface of which is an example of the "second surface” of the present invention) is equal to the upper plate portion (the lower surface of which is an example of the "first surface” of the present invention). ) is smaller than the longitudinal dimension of 221a, 222a.
  • the lower shaft 321 and the upper shaft 312 of the lifting mechanism 30 are attached to the sliding brackets 121, 122, 221 and 222, the upper plate portions 121a and 122a, and the lower plate portions 221b and 222b. It can easily be placed in the bracket via the non-existent area (inlet).
  • regions (introduction ports) where the upper plate portions 121a and 122a and the lower plate portions 221b and 222b do not exist are positioned on the leg side in the vertical direction of the support structure 100.
  • An area (introduction port) where 122a and lower plate portions 221b and 222b do not exist may be located on the head side.
  • the load sensors S11 to S14 are provided outside the movable range of the upper shaft 312, the load of the subject can be detected with high accuracy regardless of the position of the upper shaft 312.
  • the load sensor kit of this embodiment can also provide the same effects as above.
  • all of the sliding brackets 221, 222 and the fixed brackets 231, 232 are attached to the upper frame 21 using load sensors, but the present invention is not limited to this. At least one of the sliding brackets 221, 222 and fixed brackets 231, 232 may be attached to the upper frame 21 using load sensors, and the other brackets may be fixed to the upper frame 21 by conventional methods, such as welding. good.
  • each of the sliding brackets 221, 222 and the fixed brackets 231, 232 to the upper frame 21 can be performed using any number of load sensors.
  • the sliding bracket 221 is attached to the upper frame 21 by two load sensors, an upper load sensor S11 on one end side of the sliding bracket 221 and an upper load sensor S13 on the other end side.
  • two load sensors, a lower load sensor S12 on one end side of the sliding bracket 221 and a lower load sensor S14 on the other end side may be used.
  • the sliding bracket 221 may be fixed to the upper frame 21 by a single load sensor arranged above or below the longitudinal central portion of the sliding bracket 221 .
  • the load sensor kit includes a total of 16 load sensors in the above embodiment, it is not limited to this.
  • the number of load sensors (fixtures, fixtures) included in the load sensor kit can be arbitrarily changed according to the number used to attach the brackets to the upper frame 21 .
  • a stop plate extending in a plane orthogonal to the longitudinal direction of the slide brackets 121, 122, 221, 222 may be provided at the ends of the slide brackets 121, 122, 221, 222 in the longitudinal direction.
  • rollers may be provided at both ends of the upper shaft 312 and the rollers may roll within the sliding brackets 221 and 222 .
  • the fixing brackets 231 and 232 are attached to the upper frame 21 by using the coupler 24, but this is not the only option.
  • the ends of the strain bodies SB of the load sensors S21 to S24 may be attached directly to the flat plate portions 231a, 232a of the fixing brackets 231, 232.
  • the "strain body fixed to the secondary supported member" includes a mode in which the strain body is directly fixed to the secondary support member, and a mode in which the strain body is fixed to the secondary support member via a member such as the connector 24. are intended to include both aspects fixed to
  • the configurations of the load sensors S11 to S14 and S21 to S24 can be changed arbitrarily.
  • a plate-like strain-generating body may be provided instead of the beam-like strain-generating body SB.
  • the strain-generating bodies of a plurality of load sensors may be integrally formed.
  • the strain-generating bodies of the load sensor S11 and the load sensor S13 are flat plates having a U-shape in plan view.
  • SB1 the strain-generating body of the load sensor S12 and the load sensor S14 may be a strain-generating body SB2, which is a flat plate having a U-shape in plan view.
  • the strain-generating bodies of the load sensor S21 and the load sensor S23 are flat plates having a U-shape in plan view, and the strain-generating bodies of the load sensor S22 and the load sensor S24 are used.
  • the body may be a strain-generating body that is a U-shaped flat plate in plan view.
  • the present invention is not limited to the above embodiments, and other forms conceivable within the scope of the technical idea of the present invention are also included within the scope of the present invention. .

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Nursing (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Invalid Beds And Related Equipment (AREA)
PCT/JP2022/034459 2021-09-15 2022-09-14 固定部材、ベッド用の支持構造体、及びベッド Ceased WO2023042863A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202280071545.4A CN118234461B (zh) 2021-09-15 2022-09-14 固定构件、床用支承构造体以及床
US18/690,772 US12193980B2 (en) 2021-09-15 2022-09-14 Fixing member, bed supporting structure, and bed
EP22870010.0A EP4403155B1 (en) 2021-09-15 2022-09-14 Fixing member, bed supporting structure, and bed

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JP2021149825A JP7520786B2 (ja) 2021-09-15 2021-09-15 固定部材、ベッド用の支持構造体、及びベッド
JP2021-149825 2021-09-15

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JP7520786B2 (ja) * 2021-09-15 2024-07-23 ミネベアミツミ株式会社 固定部材、ベッド用の支持構造体、及びベッド

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JP2009207642A (ja) * 2008-03-04 2009-09-17 Paramount Bed Co Ltd Ｘリンク式昇降機構
JP2012518456A (ja) * 2009-02-20 2012-08-16 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ ベッドの高さ調節に対するシステム及び方法
WO2013108503A1 (ja) * 2012-01-20 2013-07-25 昭和電工株式会社 荷重検出機能付きベッド及びベッド用荷重検出器
JP6078645B2 (ja) 2013-07-16 2017-02-08 昭和電工株式会社 荷重検出機能付きベッド
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Publication number Publication date
EP4403155A1 (en) 2024-07-24
CN118234461B (zh) 2025-10-28
US20240398640A1 (en) 2024-12-05
JP7520786B2 (ja) 2024-07-23
EP4403155A4 (en) 2024-11-27
EP4403155B1 (en) 2025-10-29
CN118234461A (zh) 2024-06-21
JP2023042621A (ja) 2023-03-28
US12193980B2 (en) 2025-01-14

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