JP2008295845A - Bed system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bed system, in which a part driven by a drive source is prevented from malfunctioning when a hand switch is attached/detached. <P>SOLUTION: The bed system with the part driven by the drive source comprises a bed frame on which the drive source is provided, a controller 31 provided on the bed frame to control driving of the drive source, a relay cord 32 extended from the controller, and a connection cord 36 connected to the relay cord through a serial bus connector 34. The hand switch 21 is provided to drive the drive source through the controller. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a bed apparatus in which a floor board is divided into a plurality of floor portions, and a part of the floor portions is driven up and down by a drive source to raise a user's upper body.

  Generally, the bed apparatus has a rectangular frame-shaped bed frame. The bed frame is provided with a floor plate on which a mattress is placed. The floor board is divided into a plurality of floor portions, and at least a portion of the floor portion corresponding to the upper body of the user can be driven up and down by a drive mechanism. As a result, the user who is supine on the mattress can wake up and maintain the posture easily.

  The drive mechanism has a drive source, and the drive source is electrically connected to a controller provided in the bed body. A hand switch is electrically connected to the controller, and the drive source can be remotely operated by the controller. In other words, a part of the floor can be raised and lowered.

  The hand switch may be easier to use if it is provided on one side in the width direction of the bed body, for example, depending on the installation state of the bed device, or on the other side. There is.

  In addition, the hand switch may be easier to use if it is provided on the headboard side, which is one end in the longitudinal direction of the bed body, or on the footboard side so that a sick person or an elderly person lying on the bed device cannot operate. Sometimes it is better to be. In other words, the hand switch is required to be able to change the place where the hand switch is provided according to the installation state of the bed apparatus and other conditions.

  Therefore, conventionally, the relay cord derived from the controller is branched into a plurality of branch lines, and each branch line is led out to one side in the width direction of the bed body, the other side, one end or the other in the longitudinal direction, and at the tip of the branch line. Connect the female terminal of the connector.

  On the other hand, by connecting the male terminal portion of the connector to the tip of the connection cord derived from the hand switch, and connecting the male terminal portion to the female terminal portion at a desired position of the bed body, The drive source of the drive mechanism can be remotely operated by the hand switch.

  The controller and the hand switch are usually electrically connected to a power line by a signal cent. Therefore, the connector for connecting the relay cord derived from the controller and the connection cord derived from the hand switch has a total of four terminals including two power supply terminals and two signal terminals. A terminal connector is used.

Patent Document 1 has an actuator (drive source) that drives the floor portion of the floor plate of the bed apparatus, and this actuator is connected to a controller. It is shown that a hand switch is connected to the controller, and the driving of the actuator is controlled by the hand switch via the controller.
However, there is no indication of what connector is used to electrically connect the hand switch and the controller.
JP-A-9-187336

  As described above, the multi-terminal connector includes a male terminal portion and a female terminal portion. The male terminal and female terminal have male and female power terminals and signal terminals, respectively. When these terminals are attached and detached, the power terminals and signal terminals are connected or disconnected almost simultaneously. It has a structure.

However, when attaching and detaching the male and female terminal portions, it is not constant which of the power supply terminal and the signal terminal is connected or disconnected first. For example, when connecting, the signal terminal is more connected than the power supply terminal. When connecting or disconnecting first, the power supply terminal may be disconnected before the signal terminal.
That is, when the male and female terminal portions are attached and detached, only the signal terminal may be connected in a state where the power supply terminal is not instantaneously connected.

  When the controller is energized and the power supply terminal is not connected as described above and only the signal terminal is connected, a communication error may occur and the drive source may malfunction. .

  An object of the present invention is to provide a bed apparatus in which when a hand switch is connected to or removed from a bed body, only a signal terminal is not connected in a state where a power supply terminal is not connected.

The present invention is a bed apparatus having a portion driven by a drive source,
A bed body provided with the drive source;
A controller provided in the bed body for controlling the drive of the drive source;
Relay code derived from this controller,
A bed apparatus comprising: a relay switch and a hand switch that has a connection cord that is detachably connected via a serial bus connector and that drives the drive source via the controller.

  The serial bus connector has a male terminal portion and a female terminal portion, the male terminal portion is connected to the relay cord, and the female terminal portion is connected to the connection cord of the hand switch. preferable.

  It is preferable that the relay cord led out from the controller is branched into a plurality of branch lines, and the male terminal portions are respectively connected to the ends of the branch lines.

  According to the present invention, since the relay cord of the controller and the connection cord of the hand switch are connected using the serial bus connector, the power supply terminal is connected when the male and female terminal portions of the serial bus connector are attached and detached. In this state, the signal terminal is connected or disconnected, so that it is possible to prevent the drive source from malfunctioning due to a communication error when changing the attachment position of the hand switch.

  An embodiment of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a wake-up type bed apparatus 1 according to an embodiment of the present invention, and the bed apparatus 1 includes a base frame 2 as a bed body. Casters 3 are provided at the four corners of the base frame 2, and the base frame 2 can be moved by the casters 3. Note that a pedal 4 is provided at one end in the longitudinal direction of the base frame 2 so that the four casters 3 can be simultaneously locked or unlocked.

  A bed frame 5 as a bed body is provided above the base frame 2, and one end and the other end of the bed frame 5 are connected by a link mechanism 6. The pair of left and right link mechanisms 6 are connected by an interlocking rod 7, and the interlocking rod 7 is driven in the direction indicated by the arrow in FIG. 1 by an elevating drive source 8 provided at one end of the bed frame 5 in the longitudinal direction. It has come to be. Thereby, the bed frame 5 is driven up and down.

  A floor plate 11 is placed on the upper surface of the bed frame 5. This floor board 11 is divided into five parts: a back raising floor part 11a, a waist floor part 11b, a fixed floor part 11c, a first leg raising floor part 11d, and a second leg raising floor part 11e. The adjacent floor portions are connected to each other so as to be rotatable, and the fixed floor portion 11c is fixed to the bed frame 5.

  A back raising drive source 12 and a leg raising drive source 13 are provided on the lower surface of the longitudinal end of the bed frame 5. As shown in FIG. 2, the drive sources 12 and 13 drive the drive shafts 12a and 13a forward and backward in the axial direction, respectively. The front ends of the drive shafts 12a and 13a are connected to the other ends of links 12c and 13c (shown in FIG. 1) whose one ends are connected to the rotary shafts 12b and 13b.

  One end of a pair of first and second arms 12d and 13d (only one is shown in FIG. 1) is connected to each of the rotary shafts 12b and 13b. A roller 13e is provided at the other end of each arm 12d, 13d. The roller 12e of the first arm 12d is in rolling contact with the lower surface of the back-up floor portion 11a, and the roller 13e of the second arm 13e is the first leg. It is in rolling contact with the lower surface of the raised floor portion 11d.

  When the back raising drive source 12 and the leg raising drive source 13 are operated to drive the drive sources 12 and 13 in the forward direction, the rotary shafts 12b and 13b are rotationally driven via the links 12c and 13c. . As a result, the first arm 12d and the second arm 13d are driven in the raising direction, and as a result, the back raising floor portion 11a and the first leg raising floor portion 11d are moved to the tips of the arms 12d and 13d. Are raised by being pressed by rollers 12e and 13e. When the first leg raising floor portion 11d is raised, the second leg raising floor portion 11e is interlocked with the raising. As a result, the first leg raising floor portion 11d and the second leg raising floor portion 11e are bent substantially in a U-shape.

  Attachment portions 16 are provided at both ends in the longitudinal direction of the bed frame 5 in the longitudinal direction and at the other end in the width direction. As shown in FIG. 1, a headboard body 17 is detachably provided on one pair of attachment portions 16 in the longitudinal direction, and a footboard body 18 is also detachably provided on the other pair of attachment portions 14. .

  The raising / lowering drive source 8, the back raising drive source 12 and the leg raising drive source 13 can be remotely controlled by a hand switch 21 shown in FIG. As shown in FIG. 3, the hand switch 21 includes a raising switch 22 for raising the bed frame 5, a lowering switch 23 for lowering, a back raising switch 24 for driving the back raising floor portion 11a in the raising direction, and driving in the lying down direction. The back-lowering switch 25, the leg-raising switch 26 for driving the first leg raising floor portion 11d in the raising direction, the leg-lowering switch 27 for driving in the lying down direction, and the back of the hand switch 21 with, for example, the tip of a ballpoint pen A push switch (not shown) that can turn on / off the operation of each switch of the hand switch 21 by pressing is provided.

  A controller 31 indicated by a chain line in FIGS. 1 and 2 is provided near the one end side in the width direction at the center in the longitudinal direction of the lower surface of the bed frame 5. A relay cord 32 that is electrically connected to a control device (not shown) provided therein is derived from the controller 31.

  The relay cord 32 is branched into two branch lines 32a and 32b by a distributor 33. One branch line 32a is led from one end in the width direction of the bed frame 5 to the headboard body 17 side, and the other branch line 32b is the other end in the width direction. To the headboard body 17 side. A male side terminal portion 34a constituting the serial bus connector 34 is connected to the tip of each branch line 32a, 32b.

  As the serial bus connector 34, USB 1.1, USB 2.0, EIA-485, IEEE 1394, PCI Express, serial ATA, and the like are known. In this embodiment, the serial bus connector 34 capable of hot-swapping Is used.

  The hand switch 21 is detachably connected to the male terminal portion 34a of the serial bus connector 34 provided on the branch lines 32a and 32b of the relay cord 32. That is, the connection cord 36 is led out from the hand switch 21, and the female side terminal portion 34 b constituting the serial bus connector 34 is connected to the distal end of the connection cord 36 with the male side terminal portion 34 a.

  Then, by connecting the female side terminal portion 34b to one of the male side terminal portions 34a provided on the two branch lines 32a, 32b, the respective driving sources 8, 12, 13 are operated by the hand switch 21. The bed frame 5 can be moved up and down, and the back raising floor 11a and the first and second leg raising floors 11d and 11e can be driven up and down.

  Although not shown in detail, the male-side terminal portion 34a and the female-side terminal portion 34b of the serial bus connector 34 are provided with two male-side and female-side power terminals and signal terminals, respectively. As a characteristic of the serial bus connector 34, when connecting the male side terminal portion 34a and the female side terminal portion 34b, the signal terminal is connected after the power supply terminal is connected. It is designed to be blocked. That is, only the signal terminal is not connected when the power supply terminal is not connected.

  According to the bed apparatus 1 having such a configuration, the relay cord 32 led out from the controller 31 is branched into two branch lines 32a and 32b, and the male side terminal portion 34a of the serial bus connector 34 is provided at the respective ends, and the bed is provided. The frame 5 is arranged at one end and the other end in the width direction.

  Therefore, if the female side terminal part 34b connected to the connection cord 36 of the hand switch 21 is connected to the male side terminal part 34a at one end or the other end in the width direction of the bed frame 5, the installed state and use of the bed apparatus 1 The hand switch 21 can be provided on one end side or the other end side in the width direction of the bed frame 5 according to the demand of the person.

When the connection position of the hand switch 21 is changed, the female terminal part 34 b of the hand switch 21 is attached to and detached from the male terminal part 34 a of the serial bus connector 34. At that time, due to the characteristics of the serial bus connector 34, the signal terminals are connected to the two power terminals and the signal terminals provided in the male terminal section 34a and the female terminal section 34b, respectively. The situation that does not occur.
Therefore, a communication error occurs when the male side terminal portion 34a and the female side terminal portion 34b are attached / detached, thereby preventing the elevating drive source 8, the back raising drive source 12 or the leg raising drive source 13 from malfunctioning. be able to.

  The male terminal portion 34a of the serial bus connector 34 is provided on the bed frame 5 side, and the female terminal portion 34b is provided on the connection cord 36 on the hand switch 21 side. For example, in the case of a general device using a serial bus connector 34 such as a personal computer, a female terminal portion is provided on the main body side and a male terminal portion is provided on an accessory side such as a keyboard or a mouse. I have to.

  Therefore, if the hand switch 21 side corresponding to the accessory is the female terminal part 34b, the hand switch 21 removed from the male terminal part 34a of the bed frame 5 is connected to the serial bus connector provided in the main body of the personal computer. Since there is no connection by mistake, there is no possibility that the personal computer or the hand switch 21 will break down or malfunction.

  That is, since the female-side terminal portion 34b of the serial bus connector 34 is provided on the connection cord 36 of the hand switch 21, the hand switch 21 is erroneously connected to another device using the serial bus connector 34. It can be surely prevented.

  In the above embodiment, the relay cord derived from the controller is branched into two branch lines and positioned at one end and the other end in the width direction of the bed frame to provide the male terminal portion. You may make it locate in the direction one end side and the other end side, or you may make a relay cord branch into three or more branch lines, and may be located in the width direction and longitudinal direction of a bed frame, respectively.

  Further, the bed apparatus has been described by taking as an example a configuration in which not only a part of the floor plate is driven to move up and down but also the bed frame is driven in the vertical direction, but the configuration of the bed apparatus is not limited thereto, for example, a frame There is no problem even if it is configured to be driven up and down or a part of the floor board is driven up and down. In short, it has a part driven by a drive source, and this part is remotely controlled by a hand switch. The present invention can be applied to any bed apparatus that is operated to the above.

The side view which shows schematic structure of the bed apparatus of one Embodiment of this invention. The figure which looked at the bed frame from the lower surface. The figure which shows the male side terminal part of the serial bus connector provided in the bed frame, and the female side terminal part provided in the hand switch.

Explanation of symbols

  4 ... Bed frame, 5 ... Bed frame, 8 ... Lifting drive source, 12 ... Back raising drive source, 13 ... Leg raising drive source, 21 ... Hand switch, 31 ... Controller, 32 ... Relay cord, 33 ... Distribution 34 ... serial bus connector, 34a ... male terminal, 34a ... female terminal, 36 ... connection cord.

Claims (3)

A bed apparatus having a portion driven by a drive source,
A bed body provided with the drive source;
A controller provided in the bed body for controlling the drive of the drive source;
Relay code derived from this controller,
A bed apparatus comprising: a relay switch and a hand switch that has a connection cord that is detachably connected via a serial bus connector and that drives the drive source via the controller.   The serial bus connector has a male terminal and a female terminal, the male terminal is connected to the relay cord, and the female terminal is connected to the connection cord of the hand switch. The bed apparatus according to claim 1, wherein:   The bed apparatus according to claim 2, wherein the relay cord led out from the controller is branched into a plurality of branch lines, and the male terminal portions are connected to the ends of the branch lines, respectively.

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