JP6460954B2 - Bed equipment - Google Patents

Description

  The present invention relates to a couch device.

  For example, Patent Document 1 discloses an electric bed that includes a lifting device that lifts and lowers a bed frame and a switch that operates the lifting device. Patent Document 2 discloses an electric bed that can raise and lower the bed frame in stages. Further, Patent Document 3 discloses an electric bed in which the raising / lowering speed of the bed frame is variable. These couch devices can adjust the height of the bed by raising and lowering the bed frame by operating a switch.

JP 2004-159807 A JP 2014-076214 A Japanese Patent No. 5690033

  In these electric beds, a user of the electric bed or a caregiver of the user (hereinafter referred to as an operator) operates raising and lowering while visually checking the height of the bed supported by the bed frame. At this time, the operator is often viewing from above, and it may be difficult to visually recognize the height of the bed. In particular, for example, in a dark room, it is difficult to visually recognize the height of the bed. In addition, when the height of the bed cannot be recognized, there is a risk that an article (such as a care product) placed around the bed apparatus is sandwiched between the bed and the floor.

  The present invention has been made in view of the above-described problems, and an object thereof is to make it easy to recognize a change in the height of a bed.

  In order to achieve the above object, in the present invention, as a first invention, a notification is made based on a bed, a drive mechanism for raising and lowering the bed, a control unit for controlling the drive mechanism, and a command from the control unit The bed apparatus includes a notifying unit for notifying information, and the control unit employs means for causing the notifying unit to notify notification information of a different pattern according to the height of the bed from the floor.

  According to this invention, an alerting | reporting part alert | reports the notification information of a different pattern according to the height from the floor of a bed. Thereby, the operator can grasp the height of the bed without recognizing the height of the bed visually by recognizing the notification information. Therefore, the operator can easily recognize the change in the height of the bed.

  As a second invention, in the first invention, when the height of the bed from the floor reaches a preset pause height, the controller temporarily stops the descent of the bed in the drive mechanism. Adopt the means of letting.

  In this case, the drive mechanism stops its operation when the height of the bed from the floor reaches the temporary stop height. Thereby, the descent of the bed is temporarily stopped at the temporary stop height. Therefore, an operator who recognizes that the descent of the bed has stopped can check whether there is an obstacle between the bed and the floor.

  As a third invention, in the second invention, the control unit employs means for causing the notification unit to notify the notification information only when the bed is equal to or lower than the temporary stop height.

  In this case, the notification unit notifies the notification information only when the height from the bed floor is equal to or lower than the pause height. Thereby, the operator can recognize that the height from the bed of the bed is equal to or less than the pause height without visually confirming the height of the bed by recognizing the notification information.

  As a fourth invention, in the first to third inventions, the notification unit includes a speaker, and the control unit outputs a notification information sound having a different pattern depending on a height from the floor of the bed. Adopt a means to make the sound pronounced.

  In this case, the speaker generates a notification information sound having a different pattern according to the height from the bed floor. Thereby, the operator can recognize the change in the height from the bed floor without visually confirming the height of the bed by recognizing the pattern of the notification information sound.

  As a fifth invention, in the fourth invention, the notification information sound has a pattern in which a sound generation period that is a period in which sound continues to be generated and a mute period that is a period in which no sound is generated are alternately repeated, At least one of the sound generation period and the mute period is adopted such that it is set to be shorter as the height from the bed floor is lower.

  In this case, it is set so that at least one of the sound generation period and the mute period of the notification information sound becomes shorter as the height from the bed floor becomes lower. Thus, the operator can intuitively recognize the notification information sound pattern, and can recognize the change in height from the bed floor without visually checking the bed height. it can.

  As a sixth invention, in the fourth or fifth invention, when the descent of the couch stops, the control unit generates a stop sound, which is a sound for notifying that the descent of the couch has stopped, from the speaker. Adopt the means of letting.

  In this case, when the descent of the bed stops, a stop sound is generated from the speaker. Thereby, the operator can recognize without having confirmed visually that the fall of the said bed stopped.

  As a seventh invention, in any of the fourth to sixth inventions, further comprising a detection unit for detecting an environmental change around the bed, the control unit based on an input from the detection unit, A means of changing at least one of the sound pressure of the notification information sound and the frequency of the notification information sound is adopted.

  In this case, the speaker generates a notification information sound having a sound pressure or frequency corresponding to an environmental change around the bed apparatus. Therefore, it is possible to prevent the surrounding environment from being disturbed by the notification information sound.

  As an eighth invention, in the first to seventh inventions, further comprising an operation unit to which an elevation instruction is input, the notification unit includes a vibration generating unit that vibrates the operation unit, and the control unit A means is adopted in which the vibration generating unit oscillates in a different pattern according to the height of the bed from the floor.

  In this case, the vibration generating unit oscillates vibrations of different patterns according to the height from the bed floor. Thereby, the operator can recognize the change in the height of the bed from the floor without recognizing the height of the bed visually by recognizing the vibration pattern.

  As a ninth invention, in the first to eighth inventions, the notification section includes a display section for displaying notification information, and displays the warning display in a different pattern according to the height of the bed from the floor. The method of displaying on the part is adopted.

  In this case, the display unit displays warnings of different patterns according to the height from the bed floor. Thereby, the operator can recognize the change in the height from the bed floor by recognizing the display on the display unit.

  According to the present invention, the control unit causes the notification unit to notify notification information of a different pattern according to the height of the bed from the floor. Therefore, the operator can confirm the height of the bed from the floor without recognizing the bed by recognizing the notification information, so that the change in the bed height can be easily recognized.

It is a side view of the bed apparatus concerning a 1st embodiment of the present invention. It is a functional block diagram of the drive mechanism, controller, and operation part of the bed apparatus. It is a front view of the operation part of the bed apparatus which concerns on 1st Embodiment of this invention. It is a flowchart which shows the outline of the descent | fall operation | movement of the bed of the bed apparatus which concerns on 1st Embodiment of this invention. It is a flowchart which shows the detail of operation | movement at the time of the fall of the bed of the bed apparatus which concerns on 1st Embodiment of this invention. It is an example of the pattern of the buzzer sound which the speaker of the bed apparatus which concerns on 1st Embodiment of this invention produces. It is a functional block diagram of the modification of the drive mechanism, controller, and operation part of the bed apparatus which concerns on 1st Embodiment of this invention. It is a top view of the bed apparatus concerning a 2nd embodiment of the present invention. It is a side view of the bed apparatus shown in FIG. It is a disassembled perspective view of the support stand which comprises the bed apparatus shown in FIG. It is a top view of the support stand shown in FIG. It is a side view of the support stand shown in FIG. FIG. 11 is a side view of the support frame shown in FIG. 10, showing a state where the main frame is raised by an elevating mechanism. It is a front view of the operation part applied to the bed apparatus which concerns on 2nd Embodiment of this invention.

[First Embodiment]
Hereinafter, with reference to FIGS. 1-5, 1st Embodiment of the bed apparatus based on this invention is described. FIG. 1 is a side view of the bed apparatus A according to the present embodiment. In addition, the H direction of FIG. 1 is a direction with a user's head of the bed apparatus A, and F direction shows a direction with a user's foot. In the following description, the H direction (head side) is the forward direction, the F direction (foot side) is the rear direction, the right side when lying on a bed 200 described later is the right side, and the left side is the left side. The couch device A includes a support frame 100, a couch 200, a drive mechanism 300, a controller 400, and an operation unit 500.

  The support frame 100 includes a base frame 110, a main frame 111, an elevating mechanism 120, and a board 130. The base frame 110 is a rectangular member that is installed on the floor surface (installation surface). The base frame 110 is provided with a leg member 10a at an end that comes into contact with the floor surface. The leg member 100a is a rubber cover member installed to prevent damage to the floor surface due to concentration of load on the floor surface.

  The main frame 111 is a rectangular frame member as viewed from the floor, and directly supports the bed 200. Further, the main frame 111 includes an option mounting portion 110a. A pair of option mounting portions 110a are provided on the left and right sides of the main frame 111, and are also provided with a pair of intervals in the front-rear direction. These optional attachment portions 110a are members for fixing a fall prevention fence body (not shown).

  The elevating mechanism 120 includes a first link 120a, a second link 120b, and a connecting pin 120c. The first link 120 a is a rod-shaped member that connects the base frame 110 and the main frame 111. The first link 120a is fixed to the base frame 110 and is fixed to the main frame 111 so as to be slidable in the front-rear direction. The second link 120b is a rod-like member that connects the base frame 110 and the main frame 111 in the same manner as the first link 120a, and is installed so as to intersect the first link 120a. The second link 120b is fixed to the main frame 111 and is fixed to the base frame 110 so as to be slidable in the front-rear direction.

  The connecting pin 120c connects the first link 120a and the second link 120b so that both members can rotate around the intersection between the first link 120a and the second link 120b. A pair of such elevating mechanisms 120 is provided on the left and right with respect to the front direction. These lifting mechanisms 120 are members that support the main frame 111 so that the main frame 111 can be lifted and lowered by the first link 120a and the second link 120b.

  The board 130 is fixed to the support frame 12 and rises above the bed surface 21. The board 130 is provided with a pair of front and rear, and rises from both ends of the second vertical member 33 in the front-rear direction.

  The support base 100 configured as described above supports the bed 200 by connecting the main frame 111 that directly supports the bed 200 and the base frame 110 that is directly installed on the floor surface by the lifting mechanism 120. Further, the support base 100 allows the bed 200 supported by the main frame 111 to be lifted and lowered by the lifting mechanism 120. The bed 200 is a flat plate-like member, and is arranged on the support frame 100 as shown in FIG. Note that a mattress (not shown) is installed on such a bed 200.

  FIG. 2 is a functional block diagram of the drive mechanism 300, the controller 400, and the operation unit 500. The drive mechanism 300 is connected to the first link 120a by a connection portion (not shown) and is installed inside the main frame 111. As shown in FIG. 2, the drive mechanism 300 includes a motor 330 and a position information detection unit 331. The motor 330 has a rotating shaft (not shown) that is rotated, and generates power for moving the bed 200 up and down. The position information detection unit 331 detects the rotation amount of the motor 330 as information related to the height from the floor of the bed 200 (the installation surface of the base frame) from the rotation amount, and inputs the detected information to the first control unit 440 described later. Such a drive mechanism 300 is connected to a power source (not shown), and rotates the first link 120a clockwise or counterclockwise to raise or lower the bed 200 according to an instruction from the first control unit 440.

  The controller 400 is fixed to the support frame 100 and is connected to a power source (not shown). The controller 400 includes a first control unit 440, a storage unit 441, and an environment detection unit 442. The first control unit 440 controls the motor 330 based on the data acquired from the position information detection unit 331. Further, the first control unit 440 determines the brightness of the room from the signal input from the environment detection unit 442, and transmits an instruction regarding the volume (sound pressure) of the speaker 552 to the second control unit 550. That is, the first control unit 440 changes the sound pressure of the buzzer sound (notification information sound) based on the input from the environment detection unit 442.

  The storage unit 441 is a memory that transmits and receives data to and from the first control unit 440 in response to a request from the first control unit 440. In addition, the storage unit 441 has a maximum floor height that is the highest height from the floor of the bed 200, a temporary stop height, a minimum floor height that is the lower limit of the bed 200 that can be lowered, and a buzzer sound. And the program executed by the first control unit 440 are stored in advance. The temporary stop height is a height from the floor at which the descent of the bed 200 is temporarily stopped, and is determined in advance when the bed apparatus A is manufactured. In the present embodiment, as an example, the temporary stop height is set to 29 cm (290 mm). The environment detection unit 442 (detection unit) is an illuminance sensor that detects the brightness of the room in which the bed apparatus A is installed. The environment detection unit 442 outputs a detected illuminance signal to the first control unit 440.

  FIG. 3 is a front view of the operation unit 500. The operation unit 500 is connected to the controller 400 via a cable (not shown). As illustrated in FIG. 2, the operation unit 500 includes a second control unit 550, an input unit 551, a speaker 552, and a display unit 553. The second control unit 550 controls the speaker 552 and the display unit 553 based on an instruction from the first control unit 440 and a signal input from the input unit 551. In addition, the 1st control part 440 and the 2nd control part 550 function as a control part in this invention by cooperating.

  As shown in FIG. 3, the input unit 551 includes a lowering switch 551a, an ascending switch 551b, and a volume adjustment button (not shown). The lowering switch 551a is a switch that an operator operates to lower the bed 200. The raising switch 551b is a switch that an operator operates to raise the bed 200. The descending switch 551a and the ascending switch 551b are turned on only while the operator continues to press down. The volume adjustment button is a button for the operator to adjust the volume of the speaker 552. In addition, the operator can set the buzzer sound not to be generated by operating the volume adjustment button.

  The speaker 552 generates a buzzer sound based on an instruction from the second control unit 550. Note that the speaker 552 corresponds to a notification unit in the present invention. The display unit 553 is a monitor on which information such as the height of the bed 200 is displayed based on an instruction from the second control unit 550.

  Such a bed apparatus A is an electric bed in which the height of the bed 200 from the floor can be adjusted by a user or a caregiver of the user. The lifting operation of the bed 200 from the operator is input from the operation unit 500 placed at the operator's hand. The couch device A moves up and down the couch 200 based on this input. FIG. 4 is a flowchart showing an outline of the lowering operation of the bed 200. As shown in FIG. 4, when the lowering switch 551a is pressed, the lowering of the bed 200 is started (step S1). When the height of the bed 200 from the floor reaches the pause height, a buzzer (pause sound) is generated from the speaker 552, and the descending operation of the bed 200 is stopped (step S2). Further, when the lowering switch 551a is pressed again, the bed 200 is lowered again with a buzzer sound (falling sound) being generated (step S3). When the height of the bed 200 from the floor becomes the minimum floor height, a buzzer (final stop sound) is generated from the speaker 552, and the descent of the bed 200 is stopped (step S4).

  Next, the operation of the bed apparatus A when the bed 200 is lowered will be described in detail with reference to FIGS. 5 and 6. FIG. 5 is a flowchart showing details of the operation when the bed 200 is lowered.

  First, it is determined whether or not the lowering switch 551a is ON (step S1). Here, the second control unit 550 determines whether or not the lowering switch 551a is ON. When it is determined that the lowering switch 551a is not ON, the lowering of the bed 200 is stopped (step S12). If it is determined that the lowering switch is ON, it is determined whether the bed height is higher than the pause height (step S13). Here, the first control unit 440 compares the height from the floor of the bed 200 acquired from the position information detection unit 331 with the pause height (29 cm) stored in the storage unit 441.

  If it is determined that the height of the bed 200 from the floor is higher than the pause height, that is, if the determination is YES in step S13, the first control unit 440 rotates the motor 330 and lowers the bed 200. (Step S14). Next, it is determined whether the height of the bed 200 from the floor is the pause height (step S15). Here, the first control unit 440 compares the height from the floor of the bed 200 acquired from the position information detection unit 331 with the pause height stored in the storage unit 441. If the height of the bed 200 from the floor is higher than the pause height, that is, if the determination is NO in step S15, the process returns to step S2.

  When the height of the bed 200 from the floor becomes the temporary stop height, that is, when the determination is YES in Step S15, the first control unit 440 stops the operation of the motor 330 and stops the lowering of the bed 200. (Step S16). Further, the first controller 440 causes the speaker 552 to emit a buzzer sound indicating that the bed 200 has reached the temporary stop height (step S17). In addition, operation | movement of this step S16 and step S17 is random, and it is good also as performing step S17 previously and performing step S16 later.

  Subsequently, it is determined whether or not the lowering switch is ON even after the buzzer sound is generated (step S18). Here, the first control unit 440 determines whether the lowering switch 551a is ON. When the lowering switch 551a is ON, that is, when the determination is YES in Step S18, the first control unit 440 stops the lowering of the bed 200 (Step S19) and returns to Step S18 again. When the bed 200 is lowered from a position higher than the pause height, even if the user keeps pressing the lowering switch 551a, the bed 200 continues to be stopped at the pause height. That is, even if the operator continues to press the lowering switch 551a, the bed 200 does not lower in step S19.

  On the other hand, if the lowering switch 551a is not ON, that is, if the determination is NO in step S18, the process returns to step S2. Thus, the operator needs to press the lowering switch 551a again in order to make the height of the bed 200 lower than the pause height. When the operator depresses the lowering switch 551a again and a signal is input to the second control unit 550, the determination in step S2 is YES, and the process proceeds to step S13.

  In step S13, if the height of the bed 200 from the floor is equal to or lower than the pause height, that is, if the determination is NO, a buzzer sound is generated with a buzzer sound pattern corresponding to the height according to the unit interval period t3 in Table 1. Is pronounced (step S20). At this time, the first control unit 440 changes the sound pressure of the buzzer sound based on the input from the environment detection unit 442.

  FIG. 6 shows an example of a buzzer sound pattern generated by the speaker 552. In FIG. 6, t1 indicates a sound generation period (100 ms) in which a sound (buzzer sound) continues to sound from the speaker 552, and t2 indicates a mute period (50 ms) in which no sound is output from the speaker 552. . That is, in the diagram shown in FIG. 6, the horizontal direction of the paper indicates the time, the vertical direction of the paper indicates the presence or absence of a buzzer sound, and the sound is output from the speaker 552 when the solid line is located on the upper side of the paper at a predetermined time. Means that no sound is produced from the speaker 552 when the solid line is located on the lower side of the drawing. t3 indicates a unit interval period (variable).

  The buzzer sound has a sound generation period, a mute period, and a sound generation period as one unit, and this unit U (see FIG. 6) is sounded a plurality of times with a unit interval period t3, thereby alerting the operator. The unit interval period t3 of the buzzer sound is set so that the unit interval period t3 becomes shorter as the height of the bed 200 from the floor decreases according to Table 1 below. That is, the pattern of the buzzer sound changes according to the height of the bed 200 from the floor. In addition, the output value of the height from the floor of the bed 200 detected by the position information detection unit 331 is in centimeters (cm) with the decimal part rounded down.

  Returning to FIG. 5, following step S <b> 20, the first control unit 440 controls the motor 330 to start lowering the bed 200 (step S <b> 21). Next, the 1st control part 440 judges whether the height from the floor of the bed 200 became the minimum floor height which is the minimum of the height which can be lowered (Step S22). If it is higher than the minimum floor height, that is, if the determination is NO in step S22, the process returns to step S2. When it is the minimum floor height, that is, when the determination is YES in Step S22, the first control unit 440 stops the descent of the bed 200 (Step S23). At this time, a long stop buzzer sound (stop sound) may be generated together with the stop of the lowering of the bed 200.

  The bed apparatus A according to the present embodiment has the first control unit 440 and the second control unit 550 that cause the speaker 552 to generate a buzzer sound having a different pattern according to the height of the bed 200 from the floor, as the control unit. I have. Thereby, the operator can confirm the change in the height of the bed 200 from the floor without visually confirming the height of the bed.

  Moreover, the bed apparatus A according to the present embodiment includes a storage unit 441 that stores the pause height. Accordingly, when the height of the bed 200 from the floor reaches the temporary stop height, the first control unit 440 temporarily stops the bed 200 from descending even if the operator continues to press the lowering switch 551a. Therefore, the operator who recognizes that the descent of the bed 200 has stopped can check whether there is an obstacle between the bed 200 and the floor.

  Moreover, the bed apparatus A of the present embodiment includes an environment detection unit 442. Thereby, the 1st control part 440 can set the sound pressure of the buzzer sound which the speaker 552 produces according to the brightness of the room in which the bed apparatus A is installed. Therefore, a buzzer sound having a magnitude corresponding to the surrounding environment and the situation of the user of the bed apparatus A is generated, such as at bedtime. That is, the surrounding environment can be prevented from being hindered by the buzzer sound.

[Second Embodiment]
Hereinafter, with reference to FIGS. 8-14, the modification of the support frame of the bed apparatus which concerns on this invention, a bed, and a drive mechanism is demonstrated as 2nd Embodiment. Note that, in the bed apparatus B according to the present embodiment, the same reference numerals are used for portions common to the first embodiment, and description thereof is omitted.

As shown in FIGS. 8 to 14, the bed apparatus B includes a bed 11, a support frame 12, a drive mechanism 13, a board 14, a control unit 15, and an operation unit 501. The bed apparatus B is a so-called electric bed that uses electric power as a power source.
The bed 11 is longer in the front-rear direction than in the left-right direction when viewed in plan. The bed 11 includes a back bottom 16, a waist bottom 17, and a leg bottom 18. They are in order. The leg bottom 18 includes a knee bottom 19 and a foot bottom 20, and the knee bottom 19 and the foot bottom 20 are arranged in this order from the head side H to the foot side F.

  The upper surface of the back bottom 16, the upper surface of the waist bottom 17, and the upper surfaces of the leg bottoms 18 (the knee bottom 19 and the foot bottom 20) each form a part of the bed surface 21. The back bottom 16 corresponds to the portion of the bed surface 21 that supports the user's back, the waist bottom 17 corresponds to the portion of the bed surface 21 that supports the user's waist, and the leg bottom 18 corresponds to the bed surface 21. It corresponds to the part that supports the upper user's leg. The knee bottom 19 corresponds to a portion supporting the waist from the user's knee on the bed surface 21, and the foot bottom 20 corresponds to a portion supporting the foot tip from the user's knee on the bed surface 21. The waist bottom 17 is formed to be stretchable in the front-rear direction. The knee bottom 19 and the foot bottom 20 are connected so as to be rotatable around a bending shaft 22 extending in the left-right direction.

  The bed surface 21 is an orthogonal surface that is orthogonal to the vertical direction in a standard state before the bed 11 is deformed (for example, turning with ups and downs) such as raising the back or knees by the drive mechanism 13. The bed surface 21 is formed in a rectangular shape that is longer in the front-rear direction than in the left-right direction in plan view. The longitudinal direction of the bed surface 21 (the bed 11) is the front-rear direction, and the short side direction of the bed surface 21 is the left-right direction. A mattress (not shown) is disposed on the bed surface 21.

  The support frame 12 supports the bed 11 and receives the loads of the bed 11 and the users on the bed 11. In the present embodiment, the support frame 12 supports the back bottom 16 and the leg bottom 18 (movable bottom) so as to be rotatable around the rotation shafts 23 and 24 extending in the left-right direction. It is a Gatch bet. The support frame 12 includes a base frame 25, a main frame 26, and an elevating mechanism 27.

The base frame 25 is installed on the installation surface S and has a rectangular shape in plan view. As shown in FIG. 10, the base frame 25 includes a first vertical member 28 extending in the front-rear direction and a first horizontal member 29 extending in the left-right direction.
A pair of first vertical members 28 are provided at intervals in the left-right direction.
The 1st horizontal member 29 is constructed by the left-right paired 1st vertical member 28, and has connected both these 1st vertical members 28 in the left-right direction. A pair of first lateral members 29 are provided at intervals in the front-rear direction. The first transverse member 29 is fixed to the first longitudinal member 28 so as not to move.

  The front and rear end portions of the first vertical member 28 protrude outward in the front and rear direction from the first horizontal member 29, and an installation leg member 30 is attached to each of these end portions. In the illustrated example, a rubber cover is employed as the leg member 30, but a caster may be employed instead of the rubber cover.

The main frame 26 directly supports the bed 11. The main frame 26 includes a frame portion 31 that supports the bed 11 from below, and an option mounting portion 32 that protrudes from the frame portion 31 in the left-right direction and is disposed below the bed 11.
The frame portion 31 has a rectangular shape in plan view. The frame portion 31 includes a second vertical member 33 (vertical member) extending in the front-rear direction and a second horizontal member 34 (receiving member) extending in the left-right direction.

A pair of second vertical members 33 are provided with a gap in the left-right direction.
The second horizontal member 34 is installed on a pair of left and right second vertical members 33 and connects both the second vertical members 33 in the left-right direction. A plurality of second lateral members 34 are provided at intervals in the front-rear direction, and five in the illustrated example. The second horizontal member 34 is fixed to the second vertical member 33 so as not to move. An end portion in the front-rear direction of the second vertical member 33 protrudes in the front-rear direction from the second horizontal member 34 located on the outermost side in the front-rear direction among the plurality of second horizontal members 34.

  A pair of left and right option mounting portions 32 are provided with the frame portion 31 interposed therebetween, and a pair of left and right option mounting portions 32 are also provided with a space in the front-rear direction. Each option mounting portion 32 includes a pair of front and rear projecting members 35 extending in the left-right direction from the second vertical member 33, and an option receiver 36 mounted on both projecting members 35 so as to be slidable in the left-right direction. Yes. The option receiver 36 protrudes from the bed 11 in the left-right direction. A rail member for preventing falling is attached to and detached from the option receiver 36.

  The main frame 26 is divided into a head side frame 37 and a foot side frame 38 along the front-rear direction. In the present embodiment, each of the pair of second vertical members 33 is divided into a head-side member 33a and a foot-side member 33b along the front-rear direction. The pair of left and right head side members 33a is connected to the two second side members 34 located on the head side H of the plurality of second side members 34, whereby a head side frame 37 is formed. Further, the pair of left and right foot side members 33b are connected to the three second lateral members 34 located on the foot side F of the plurality of second lateral members 34, thereby forming a foot side frame 38. The option attachment portion 32 is disposed on each of the head side frame 37 and the foot side frame 38 in a pair of left and right.

The head side frame 37 is provided with a rear frame 39 to which the back bottom 16 is fixed, and a first rotation member 43 that rotates the rear frame 39 (back bottom 16) about the first rotation shaft 23. ing. Both the rear frame 39 and the first rotating member 43 are formed in an inverted U shape that opens toward the head side H in a plan view.
The rear frame 39 includes a pair of bottom support portions 40 provided at intervals in the left-right direction, and a connecting shaft 41 that connects the ends of the foot support F in the front-rear direction of the bottom support portion 40. An end portion of the connecting shaft 41 in the left-right direction protrudes from the bottom support portion 40 in the left-right direction.

  As shown in FIGS. 10 and 11, the retro frame 39 is connected to the main frame 26 via a retro link 42. A pair of retra links 42 is provided with the retra frame 39 sandwiched in the left-right direction. The left and right end portions of the connecting shaft 41 are rotatably connected to the end portions on the foot side F of the respective retractor links 42. An end portion on the head side H of each of the retractor links 42 is rotatably connected to the main frame 26 via the first rotation shaft 23. The first rotation shaft 23 rotatably connects the retractor link 42 to the main frame 26.

  As shown in FIGS. 9 to 11, the first rotating member 43 includes a pair of left and right first push-up arms 43a extending in the front-rear direction along the lower surface of the back bottom 16, and a pair of left and right first push-up arms 43a. And a first connecting portion 43b (receiving member) for connecting the two in the left-right direction. The 1st connection part 43b has connected the edge part of the leg | foot side F of the 1st push-up arm part 43a. An end portion in the left-right direction of the first connecting portion 43b protrudes from the first push-up arm portion 43a in the left-right direction, and is rotatably connected to the second vertical member 33. The end portion on the head side H of the first push-up arm portion 43a is slidably in contact with the lower surface of the bottom support portion 40.

  In the head side frame 37, the end of the first push-up arm portion 43 a on the head side H slides with respect to the lower surface of the bottom support portion 40 by the first turning member 43 turning upward. The first rotating member 43 pushes up the retractor frame 39. Then, the retractor link 42 rotates about the first rotation shaft 23, and the retractor frame 39 rotates about the connecting shaft 41. As a result, as shown in FIG. 9, while the entire back bottom 16 is moved to the head side H, the back bottom 16 is swung up and down around the first rotation shaft 23, and the back bottom 16 is inclined with respect to the horizontal plane. This is a so-called back-up state.

  The retra frame 39 in a back-up state is supported by a retra stay 44 extending in the front-rear direction. The stay 44 for retra is provided between the retra frame 39 and the second horizontal member 34 that is located on the most head side H among the plurality of second horizontal members 34. An end on the foot side F of the retractor stay 44 is rotatably connected to the retractor frame 39, and an end of the head side H of the retractor stay 44 is rotatably connected to the second lateral member 34. Yes. The retra stay 44 supports the retra frame 39 in a back-up state from obliquely below the head side H.

As shown in FIGS. 10 and 11, the foot side frame 38 has a fixing member 45 to which the leg bottom 18 is fixed via the second rotation shaft 24, and the leg bottom 18 around the second rotation shaft 24. And a second rotating member 46 to be rotated.
The fixing member 45 is provided on the second lateral member 34 located closest to the head side H among the plurality of second lateral members 34 constituting the foot side frame 38. The fixing member 45 protrudes from the second lateral member 34 toward the foot side F. An end of the head side H of the leg bottom 18 is fixed to the fixing member 45 via the second rotation shaft 24 so as to be rotatable.

  The second rotating member 46 is connected to the second vertical member 33 so as to be rotatable around the push-up shaft 47. A pair of push-up shafts 47 are provided with the second rotating member 46 sandwiched in the left-right direction. These push-up shafts 47 are arranged coaxially with each other.

  The second rotating member 46 is formed in an inverted U shape that opens to the foot side F in plan view. The second rotating member 46 includes a pair of left and right second push-up arms 48 extending in the front-rear direction along the lower surface of the leg bottom 18 and a second connection portion that connects the pair of left and right second push-up arms 48 in the left-right direction. 49 (receiving member). The second connecting portion 49 connects the ends on the head side H of the pair of left and right second push-up arm portions 48. The end portion on the head side H of the second push-up arm portion 48 is connected to the second vertical member 33 via the push-up shaft 47. The end portion on the foot side F of the second push-up arm portion 48 is slidably brought into contact with the lower surface of the knee bottom 19.

  In the foot side frame 38, the second rotating member 46 rotates upward, so that the end of the foot side F of the second push-up arm portion 48 slides on the lower surface of the knee bottom 19, The second rotating member 46 pushes up the knee bottom 19. Then, as shown in FIG. 9, the knee bottom 19 rotates around the first rotation shaft 23, and the end of the foot side F in the knee bottom 19 rises, while the foot bottom 20 relatively moves toward the bending shaft 22. A so-called leg-raised state in which the portion corresponding to the knee on the bed surface 21 is bent so as to protrude upward is turned around.

The foot bottom 20 is provided with a foot raising stay 50. The foot-lifting stay 50 holds the leg bottom 18 in a state where the foot-bottom is raised. The leg bottom 18 in the foot-up state is formed by turning the leg bottom 20 upward about the bending axis 22 after the leg bottom 18 is in the leg-up state. The foot raising stay 50 extends in the front-rear direction along the lower surface of the foot bottom 20. An end of the foot side F in the foot tip raising stay 50 is rotatably connected to the foot bottom 20. The end on the head side H of the foot raising stay 50 is a free end.
In the foot raising stay 50, when the leg bottom 18 is in the foot raised state, the entire foot raising stay 50 rotates downward and obliquely downwards from the foot bottom 20 to the head side H. The end on the head side H of the foot raising stay 50 is locked to the second vertical member 33.

  Here, the end on the head side H of the waist bottom 17 is fixed to the rear frame 39, and the end on the foot side F of the waist bottom 17 is fixed to the fixing member 45. When the back bottom 16 is swung up and down, the end of the head side H of the waist bottom 17 undulates together with the back bottom 16, so that the waist bottom 17 as a whole protrudes downward while extending in the front-rear direction. To curve.

  In the support gantry 12, the first rotating member 43 and the second rotating member 46 rotate the back bottom 16 and the leg bottom 18 from the above-described standard state, so that the bed 11 is shown by a two-dot chain line in FIG. As shown in Fig. 4, the typical use state is such that the back is raised and the legs are raised (knees raised). When the bed 11 is changed from the standard state to the use state, the shift of the user with respect to the bed apparatus B can be effectively prevented by performing the leg raising prior to the back raising.

As shown in FIGS. 10, 12, and 13, the elevating mechanism 27 elevates the main frame 26 with respect to the base frame 25. The elevating mechanism 27 employs a so-called X link structure. The elevating mechanism 27 includes a first link 51, a second link 52, and a connecting rod 53 (receiving member).
Each of the first link 51 and the second link 52 is provided as a pair with a space in the left-right direction. The first link 51 and the second link 52 both extend in the front-rear direction, and the center portions of the first link 51 and the second link 52 in the front-rear direction are connected to each other via a connecting pin 54 so as to be rotatable. Has been.

Four connecting rods 53 are provided. Each connecting rod 53 connects both ends in the front-rear direction in each of the pair of left and right first links 51 and both ends in the front-rear direction in each of the pair of left and right second links 52.
Of the four connecting rods 53, the connecting rod 53 that connects the end portion on the head side H of the first link 51 is rotatably connected to the first vertical member 28, and the end on the head side H of the second link 52. The connecting rod 53 that connects the parts is rotatably connected to the second vertical member 33. Of the four connecting rods 53, the connecting rod 53 that connects the end of the first link 51 on the foot side F is mounted on the upper guide portion 55 provided on the second vertical member 33, and the foot of the second link 52 is attached. The connecting rod 53 that connects the end portions of the side F is attached to a lower guide portion 56 provided on the first vertical member 28. Each of the upper guide portion 55 and the lower guide portion 56 supports the connecting rod 53 slidably along the front-rear direction.

  In the elevating mechanism 27, when the first link 51 rotates upward, the second link 52 also rotates upward in conjunction with the first link 51. At this time, the end portion of the foot side F in the first link 51 and the end portion of the foot side F in the second link 52 are guided to the head side H by the upper guide portion 55 or the lower guide portion 56, respectively. The link 51 and the second link 52 rotate, and the main frame 26 rises with respect to the base frame 25.

  As shown in FIGS. 10 and 11, the drive mechanism 13 is attached to the support base 12 and moves the movable portion 57 that is at least a part of the bed 11 and the support base 12. The drive mechanism 13 is a linear actuator that expands and contracts in the front-rear direction, and moves the movable portion 57 by extending and contracting in the front-rear direction. The drive mechanism 13 rotates the bottom drive mechanism 58 that rotates the back bottom 16 or the leg bottom 18 (movable bottom) as the movable portion 57 and the first link 51 or the second link 52 (link) as the movable portion 57. A link drive mechanism 59 to be moved.

The bottom drive mechanism 58 includes a first drive mechanism 58 a that rotates the back bottom 16 and a second drive mechanism 58 b that rotates the leg bottom 18.
The first drive mechanism 58a is disposed in a portion of the support gantry 12 that is located on the head side H along the front-rear direction. The first drive mechanism 58a extends in the front-rear direction to rotate the first rotation member 43 upward. The 1st drive mechanism 58a is provided between the 2nd horizontal member 34 located in the most head side H among the some 2nd horizontal members 34, and the 1st connection part 43b. The first drive mechanism 58a is coupled to the second lateral member 34 and the first coupling portion 43b via an attachment member 60 protruding from the second lateral member 34 and the first coupling portion 43b. The first drive mechanism 58a is rotatably connected to the attachment member 60.

  The second drive mechanism 58b is disposed at the center in the front-rear direction of the support frame 12. The second drive mechanism 58b extends in the front-rear direction to rotate the second rotation member 46 upward. The second drive mechanism 58 b includes a second lateral member 34 that is located closest to the head side H among the plurality of second lateral members 34 provided on the foot side frame 38, and a second connecting portion of the second rotating member 46. 49. The second drive mechanism 58 b is coupled to the second lateral member 34 and the second coupling portion 49 via attachment members 60 protruding from the second lateral member 34 and the second coupling portion 49, respectively. The second drive mechanism 58b is rotatably connected to the attachment member 60.

  The link drive mechanism 59 is disposed in a portion of the support gantry 12 that is located on the foot side F along the front-rear direction. The link drive mechanism 59 extends in the front-rear direction to rotate the first link 51 upward. The link drive mechanism 59 is provided between the first link 51 and the connecting rod 53 that connects the ends of the first link 51 on the foot side F among the plurality of connecting rods 53. The link drive mechanism 59 is connected to the connecting rod 53 via an attachment member 60 protruding from the connecting rod 53. The link drive mechanism 59 is connected to the first link 51 via the conversion mechanism 61. The conversion mechanism 61 converts the expansion / contraction motion of the link drive mechanism 59 into the rotational motion of the first link 51. The link drive mechanism 59 is rotatably connected to the attachment member 60 and the conversion mechanism 61.

As shown in FIGS. 8 to 13, the board 14 is fixed to the support frame 12 and rises above the bed surface 21. The board 14 is provided with a pair of front and rear, and rises from both ends of the second vertical member 33 in the front-rear direction.
The control unit 15 controls the drive mechanism 13. The control unit 15 is electrically connected to the drive mechanism 13. A power cord C and an operation unit (not shown) are electrically connected to the control unit 15. The control unit 15 is supplied with power from the outside via the power cord C and receives an instruction from the outside via the operation unit. The control unit 15 controls the drive mechanism 13 based on an instruction from the operation unit 501 shown in FIG.

  FIG. 14 is a front view of the operation unit 501 applied to the bed apparatus B. As in the first embodiment, the operation unit 501 includes a second control unit 550, an input unit 551, a speaker 552, and a display unit 553. Further, as shown in FIG. 14, the input unit 551 includes, in addition to the lowering switch 551a and the raising switch 551b, a leg lowering switch 551c, a leg raising switch 551d, a back lowering switch 551e, a back raising switch 551f, Down) switch 551g and interlocking (back / leg raising) switch 551h.

  The leg lowering switch 551c is a switch for moving the knee bottom 19 and the foot bottom 20 from the leg-raised state in a direction horizontal to the floor surface. The leg raising switch 551d is operated when the knee bottom 19 and the leg bottom 20 are moved to the leg raising state. The back lowering switch 551e is operated when the back bottom 16 is moved from the back-up state to the horizontal direction on the floor surface. The back raising switch 551f is operated when the back bottom 16 is moved to the back raising state. The back / leg lowering switch 551g is operated when the back bottom 16 and the knee bottom 19 are moved from the back-raised state and the leg-raised state to the horizontal state on the floor surface. The back / leg raising switch 551h is operated when the back bottom 16 and the knee bottom 19 are moved in conjunction with each other to move to the back raising state and the leg raising state.

In addition, this invention is not limited to the said embodiment, For example, the following modifications can be considered.
(1) In the above embodiment, the speaker 552 generates a buzzer pattern having a pattern as shown in FIG. 6, but the present invention is not limited to this. The speaker 552 may perform information notification by voice. If information notification is performed by voice, the operator can more easily recognize the height of the bed 200 from the floor.

(2) The first control unit 440 may cause the display unit 553 to display different types of notification information according to the height of the bed 200 from the floor. In addition, the display unit 553 may include an LED light or the like and shine in different patterns depending on the height of the bed 200 from the floor. In this case, the display unit 553 can function as a notification unit in the present invention.

(3) FIG. 7 is a functional block diagram of a modified example of the drive mechanism 300, the controller 400, and the operation unit 500. As shown in FIG. 7, the operation unit 500 further includes a vibration generation unit 554, and the first control unit 440 and the second control unit 550 have vibration generation units with different patterns according to the height from the floor of the bed 200. 554 may be oscillated. When the operation unit 500 includes the vibration generation unit 554, the operator can recognize a change in the height of the bed 200 from the floor also by the vibration pattern of the operation unit 500 at hand. In this case, the vibration generating unit 554 can function as a notification unit in the present invention.
Furthermore, a configuration including at least one of the speaker 552, the display unit 553, and the vibration generation unit 554 can be employed as the notification unit.

(4) In the above embodiment, in the descending operation of the bed 200, the buzzer sound is generated only when the height of the bed 200 from the floor is equal to or lower than the pause height. However, the present invention is limited to this. Not. When the descending operation of the bed 200 is performed, a buzzer sound may be generated. Further, even when the bed 200 is raised, a buzzer sound may be generated.

(5) In the above embodiment, the environment detection unit 442 is an illuminance sensor, and the first control unit 440 changes the sound pressure of the buzzer sound based on the input from the environment detection unit 442. Is not limited to this. The environment detection unit 442 may be a sound sensor such as a microphone. As the environment detection unit 442, a detection unit that detects a change in the surrounding environment can be appropriately employed. For example, it is possible to change the volume pattern of the buzzer sound according to the time, for example, by adopting a clock as the environment detection unit 442 and lowering the sound pressure of the buzzer sound based on the time, for example, at night.
The first control unit 440 may change the frequency of the buzzer sound based on the signal from the environment detection unit 442. In this case, for example, the frequency of the buzzer sound may be set to be switchable between 2.7 kHz and 1.2 kHz.

(6) Moreover, although the environment detection part 442 shall be provided in the controller 400, this invention is not limited to this. The environment detection unit 442 may be provided in the operation unit 500. The environment detection unit 442 may be included in the support frame 100.

(7) In the above embodiment, the unit interval period t3 is changed according to the height of the bed 200 from the floor, so that the buzzer sound having a different pattern is generated from the speaker 552. However, the present invention is not limited to this. I can't. For example, the buzzer sound of a different pattern may be generated from the speaker 552 by changing the sound pressure of the buzzer sound or the frequency of the buzzer sound according to the height of the bed 200 from the floor.

(8) Further, in the above embodiment, the buzzer sound is generated simultaneously with the descending operation of the bed 200, but the present invention is not limited to this. The buzzer sound may sound before the descending operation of the bed 200. Assuming that the buzzer sounds before the descent operation, the buzzer sound is generated earlier than the operation of the bed 200, so that the operator can safely operate in anticipation of the operation of the bed 200. Furthermore, it is good also as a structure which sounds a buzzer also at the time of raise operation | movement in addition to the time of the fall operation | movement of the bed 200. FIG.

(9) Further, assuming that the rotation speed of the motor 330 is variable, the first control unit 440 reduces the rotation speed of the motor 330 and reduces the bed 200 when the height of the bed 200 from the floor is equal to or lower than the pause height. It is also possible to slow down the descent speed.

(10) Moreover, in the said embodiment, although unit interval period t3 shall become short, so that the height from the floor of the bed 200 becomes low, this invention is not limited to this. As the height of the bed 200 from the floor decreases, at least one of the sound generation period t1 and the mute period t2 may be shortened.

A bed apparatus 120 elevating mechanism 200 bed 300 driving mechanism 400 controller 440 first control unit 441 storage unit 442 environment detection unit (detection unit)
500 Operation Unit 550 Second Control Unit 551 Input Unit 551a Down Switch 551b Up Switch 552 Speaker 553 Display Unit 554 Vibration Generation Unit B Bed Device 11 Bed 12 Support Stand 13 Drive Mechanism 16 Back Bottom (Moving Bottom)
18 leg bottom (movable bottom)
23, 24 Rotating shaft 26 Main frame 33 Second vertical member (vertical member)
34 Second transverse member (receiving member)
34a Side surface 34b Lower surface 43b 1st connection part (receiving member)
49 Second connecting part (receiving member)
53 Connecting rod (receiving member)
57 Moving parts

Claims (9)

A bed having a plurality of bottoms including a back bottom, a waist bottom, and a leg bottom;
A plurality of first frames that support the plurality of bottoms;
A second frame supporting the plurality of first frames;
A drive mechanism for moving the bed;
A control unit connected to the drive mechanism;
A notification unit connected to the control unit;
With
The notification unit emits a buzzer sound of a different pattern based on the height from the bed floor when lowering the bed,
The notification unit
When a height of the bed from the floor is a preset first height, a buzzer sound including a first sound generation period is emitted,
A buzzer sound including a second sounding period shorter than the first sounding period when a height of the bed from the floor is a second height lower than the first height;
The second frame is provided with a first member extending in the first direction of the second frame in plan view, and a part of the first member is curved,
The second frame includes two second members extending in a second direction intersecting the first direction, and leg members provided on the second member,
A third member extending in the first direction is provided on the second frame, and two first links extending in the second direction are provided on the third member, and two second members extending in the second direction are provided. Two links are provided on the first member;
Connecting each of the first link and the second link with a fixing member;
The first member is provided closer to the head of the electric bed than the third member,
The electric bed characterized in that the minimum height from the floor of the bed is less than 20 cm. 2. The pattern according to claim 1, wherein the pattern of the buzzer sound includes a first pattern including the first sound generation period and a second pattern including the second sound generation period and different from the first pattern. Electric bed. When the couch is lowered, when the first height is reached, the descent of the couch is temporarily stopped, and the notification unit emits a buzzer sound of the first pattern,
3. The electric bed according to claim 2, wherein the notification unit continuously emits the buzzer sound of the second pattern while the bed is lowered again. An operation unit connected to the control unit;
4. The electric bed according to claim 3, wherein the operation unit includes a lowering switch that lowers the bed and a raising switch that raises the bed. 5. 5. The electric bed according to claim 4, wherein while the lowering switch is pressed, the bed is lowered when the height of the bed from the floor is higher than the first height. The electric bed according to claim 5, wherein the operation unit further includes a back raising switch, a back lowering switch, a leg lowering switch, and a leg raising switch. The electric bed according to claim 4, wherein the operation unit further includes a back raising switch, a back lowering switch, a leg lowering switch, and a leg raising switch. The notification unit includes a speaker,
The electric bed according to claim 2, wherein the speaker emits a sound having a different pattern according to a height of the bed from the floor. The electric bed according to any one of claims 1 to 8 , wherein a minimum height from the floor of the bed is 15 cm.

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