JPS61135658A - Bed apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a bed device in which the height of a frame on which bedding such as a pinerest is placed can be arbitrarily adjusted.

[Technical background of the invention and its problems]

BACKGROUND OF THE INVENTION Among bed devices used as examination tables, treatment tables, etc., those in which the height of a frame on which bedding is placed during examination or treatment can be adjusted are in widespread use. There are various types of adjustment mechanisms for adjusting the height of the frame, but a typical example is one provided with telescopic legs, as shown in Japanese Utility Model Publication No. 55-40046.

In this system, fixed columns are provided on each of the headboard side and footboard side of a frame on which bedding such as a mattress is placed, and these fixed columns are provided with extendable columns that can be freely expanded and contracted in the vertical direction. Adjustment mechanisms for vertically moving the telescoping struts are provided on the heradboard side and the footboard side, respectively, and the frame is moved vertically by independently operating these adjustment mechanisms. In other words, when adjusting the height of the frame, first operate the adjustment mechanism on one side, for example the headboard side, to extend or retract the telescoping columns on the headboard side, and then operate the adjustment mechanism on the footboard side to extend or retract the telescopic columns on the headboard side. The extensible support on the board side is expanded and contracted to match the height of the frame on the Heradboard side.

In this case, generally in a hospital room or the like, the bed is often installed with the bedboard side pressed against a wall or the like, and the footboard side facing the aisle. Therefore, when operating the adjustment mechanism on the footboard side, it is easy to operate because it is on the aisle side, but when operating the adjustment mechanism on the headboard side, walls etc. get in the way, so you must first move the bed and then move the bed to the wall. There is an inconvenience that you cannot operate it unless you release it from the camera. Moreover, it is troublesome that the frame cannot be moved up or down without operating the adjustment mechanisms on both the headboard side and the footboard side.

Therefore, in order to solve the above-mentioned problems, as shown in Japanese Utility Model Publication No. 57-59134, a vertical drive mechanism is provided on the base body, and a frame is attached to this vertical drive mechanism to enable vertical movement. It is also known that However, as described above, in the case where the vertical movement mechanism is provided at the lower part of the frame, the space under the frame is blocked by the vertical movement mechanism. Therefore, even if an attempt is made to use the space under the frame to store clothes for the patient to change into or an auxiliary bed for an attendant, it is inconvenient that the space cannot be used.

Further, as shown in Japanese Utility Model Publication No. 59-12894, telescopic legs are provided at the four corners of the bed base frame, and these legs are linked to extend and retract at the same time using a single handle. Beds in which the bed base frame can be raised and lowered horizontally are also known.

However, since the bed base frame and the legs of the bed are integrated, it is impossible to disassemble the bed during transportation, and the packaging is large and very inconvenient to handle.

(Object of the Invention) This invention has been made in view of the above-mentioned circumstances, and its object is to enable the height of the frame to be adjusted by simultaneously expanding and contracting the telescoping columns on the head side and the foot side. To provide a bed device in which a lower space can be widely and effectively utilized, a frame, a bed rail, and a movement shaft can be disassembled, and which is convenient for packing and transportation.

[Summary of the invention]

In order to achieve the above-mentioned object, this invention provides telescopic struts that can be extended and retracted for the bed rails that are removably provided on the head side and foot side of the frame, and also includes a movable member that moves up and down by the rotation of the screw rond. The movable member and the telescopic column are connected by a connecting rope, and the screw ronds on the head side and the foot side are interlocked by a connecting shaft so that they can move up and down at the same time.

[Embodiments of the invention]

Embodiments of the present invention will be described below based on the drawings.

1 to 9 show a first embodiment, and 1 is a frame on which bedding such as a pine mattress is placed. Bed rails 2, 2 are detachably provided on the head side 1a and foot side 1b of the frame 1, respectively. That is, the bedboard side 1a and the footboard side 1 of the frame 1
A connecting plate 2b having hooks 2a, 2a is provided at the corner of b. On the other hand, two bins 2c, 2c that are spaced apart in the vertical direction are protruded from the bed rails 2, 2, and the hooks 2a, 2a of the frame 1 are hung on the bins 2c, 2G of the bed rail 2°2. By stopping frame 1 and the bed [
12 and 2 are detachably connected. In addition, the bed rails 2, 2 are provided with telescopic columns 3 that can be freely extended and contracted in the vertical direction.
are provided and constitute support legs 4... These support legs 4 have the same structure, and the support column 4a of the bed column 2 is formed in the shape of a rectangular tube, and a guide body 6 having a guide hole 5 is provided at the lower end opening thereof. The telescopic support 3, which also has a rectangular cylindrical shape, is inserted into the support 4a, and projects downward from the guide hole 5. A caster 7 is attached to the lower end of this telescopic column 3, and a sliding body 8 that vibrates within the column 4a is fixed to the upper end inserted into the column 4a. Therefore, a gap 9 is formed between the inner surface of the fixed column 4a and the outer surface of the telescopic column 3.

On the other hand, the head side 1ae and the foot side 1 of the frame 1
A vertical movement mechanism 10.10 having the same structure is provided between the pillars 4a, 4a of the bed rail 2.2 in FIG.

That is, 11 is a support tube fixed perpendicularly to the bed shelf 2, and inside this support tube 11, both ends are fixed members 12.
．． A counter-threaded screw rod 13 pivotally supported by 12 is rotatably installed. This reverse slope screw rod 1
A bevel gear 14 is fitted into the longitudinally intermediate portion of 3.
A right-handed thread 13a is provided on the right side of the bevel gear 14, and a left-handed thread 13b is provided on the left side. Then, the right-hand screw 1
Movable members 15a and 15b made of nuts are screwed into the left-hand threads 3a and 13b, respectively. Furthermore, these movable members 15a.

15b has a connecting cable 16.1 such as a belt or wire.
6 are connected at one end with a screw or the like. These connecting cables 16.16 are guided in the left-right direction along the guide grooves 17 of the fixed members 12, 12, and are hooked up to pulleys 18.18 provided on the pillars 4a, 4a. Further, the connecting cables 16.16 are guided into the gap 9 in the support column 4a, and the other ends of these connecting cables 16.16 are respectively connected to sliding bodies 8.8 provided at the upper end of the telescopic support column 3.3. .

Further, gear boxes 19, 19 are provided in the support tubes 11 of the bed rails 2, 2, and a two-axis motor 21 as a drive section is provided in the gear box 19 on the foot side 1b. One rotary shaft 22 of this two-shaft motor 21 protrudes toward the foot side 1b, and the other rotary shaft 23 protrudes toward the head side 1b.
It is prominent in a. The rotating shaft 22 is located on the foot side 1a.
The bevel gear 14 of the counter-threaded screw rod 13 is in motion via bevel gears 24, 25 in the gear box 19 of. Further, one end of a connecting shaft 26 is detachably connected to the other rotating shaft 23 of the two-shaft motor 21 by a pin 27, and this other end is connected to the gear box 19 on the head side 1a.
It is detachably connected to a rotating shaft 24a of a bevel gear 24 provided therein by a pin 28. And this connecting shaft 26
are close to each other along the lower surface of the frame 1, and form a space 29 in the lower part of the frame 1.

Note that 30a and 30b are limit switches for detecting the rightmost and leftmost ends of the movable members 15a and 15b;
is a fixing screw for holding the frame 1 in the desired height after adjusting the height of the frame 1 by expanding and contracting the telescopic column 3.

Next, the operation of the bed device configured as described above will be explained.

From the state shown in Figures 1 to 3, the operating section (not shown)
When the two-shaft motor 21 is rotated, for example, in the positive direction, the bevel gears 24 and 25 in the gear box 19 on the foot side 1b are rotated via the rotating shaft 22, and the connecting shaft 26 is rotated from the rotating shaft 23. The bevel gears 24, 25 in the gear box 19 on the head side 1a rotate through this. therefore,
The reverse threaded screw rod 13 rotates, and the movable members 15a and 15b screwed together move in opposite directions as the rod 13 rotates. That is, the movable member 15a screwed onto the right-hand screw 13a moves leftward, and the movable member 15b screwed onto the left-hand screw 13b moves rightward. Therefore, the connecting cables 16.16 connected to the movable members 15a, 15b are simultaneously drawn into the support tube 11, and the connecting cables 16.16 in the support column 4a
6.16 are drawn at the same time. In other words, the sliding body 8.8
is pulled down by the connecting rope 16.16 and the telescopic column 3
．． 3 protrudes from the lower end of the support column 4a. Since this operation is performed simultaneously on the head side 1a since they are connected by the connecting shaft 26, the four supports m4 . . . extend simultaneously, making it possible to raise the height of the frame 1. Then, by stopping the two-axis motor 21 when the height of the frame 1 reaches a desired position as shown in FIG. 2, the frame 1 can be maintained at the desired height. .

Furthermore, when the height of the frame 1 is to be lowered, the counter-threaded screw rod 13 can be rotated in the reverse direction by rotating the two-shaft motor 21 in the reverse direction using an operating item. Therefore, the movable members 15a, 15b move outward within the support tube 11, and the connecting cables 16, 16 within the support tube 11 are paid out.

On the other hand, since the full load of the bed is applied to the telescopic struts 3..., if there is play in the connecting ropes 16.16, the telescopic struts 3... will move the connecting ropes 16.16 into the struts 4a... It draws you in and immerses you. Therefore, the height of the frame 1 can be reduced.

As described above, according to the first embodiment, the height of the frame 1 can be arbitrarily adjusted by rotating the two-axis motor 21 in forward and reverse directions using the operating section, and the operating section can be operated by remote control. For example, the patient can easily operate the device while in bed.

FIG. 10 shows a second embodiment, in which a manual type is used instead of an electric type. That is, the bevel gears 24, 24 provided in the gear boxes 19, 19 on the head side 1a and the foot side 1b are connected to each other by the connecting shaft 26, and the bevel gears 24, 24 provided on the gear boxes 19, 19 on the foot side 1b are connected to each other by the connecting shaft 26.
A handle 31 is provided which is directly connected to the handle 4. With this configuration, the connecting shaft 26 can be rotated by operating the handle 31 provided on the foot side 1b, and the reverse thread screw rod 13 can be rotated by operating the handle 31 provided on the foot side 1b.
．． 13 can be rotated to simultaneously expand and contract the four telescopic columns 3. Therefore, even if the head side 1a is installed with the head side 1a pressed against a wall etc., the frame 1
The height can be adjusted.

Also, when packing and transporting the bed device, be sure to
The hooks 2a, 2a provided on the connecting plate 2b of the bed column 2,
The frame 1 and the bed rails 2, 2 can be disassembled by removing them from the bins 2c, 2c. Furthermore, the connecting shaft 26 can be separated from the rotating shaft 23.24a by removing the pins 27.28 at both ends of the connecting shaft 2b. Therefore, one frame 1 and two bunk columns 2.2
Moreover, it can be disassembled into one connecting shaft 26 and packed compactly, and the assembly work is also easy.

〔Effect of the invention〕

As explained above, according to the present invention, the telescopic struts on the head side and the foot side are simultaneously expanded and contracted to achieve the height III of the frame, and the reverse threaded screw is used to retract and pay out the connecting cables connected to the telescopic struts. Since the rods are connected by the connecting shaft provided along the lower surface of the frame, the lower space of the frame can be widely used effectively. Furthermore, since the frame, bed rail, and connecting shaft can be disassembled, they can be separated and packed, which has the effect of facilitating transportation work.

[Brief explanation of the drawing]

1 to 9 show a first embodiment of the present invention, in which FIG. 1 is a side view of the bed device with its frame lowered, and FIG. 2 is taken along line I-I in FIG. Figure 3 is a cross-sectional view taken along line ■-■ in Figure 2, Figure 4 is a side view of the bed device with the frame elevated, and Figure 5 is a cross-sectional view taken along line v-v in Figure 2. Figure 6 is a cross-sectional view taken along line ■-■ in Figure 2, Figure 7 is a cross-sectional view taken along line ■-■ in Figure 2, and Figure 8 is a cross-sectional view taken along line ■-■ in Figure 2. FIG. 9 is a side view showing a connecting portion between the frame and the bed rail, and FIG. 10 is a longitudinal side view showing a second embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Frame, 1a... Head side, 1b... Foot side, 2... Bed column, 3... Telescopic support, 13...
- Reverse thread screw rod, 15a, 15b... Movable member, 16... Connecting cable, 21... 2-axis motor (drive unit), 26... Connecting shaft. Applicant's representative Patent attorney Takehiko Suzue Figure 5 Figure 6 Figure 7 Figure 8 Figure 9

Claims (1)

[Claims] A frame on which bedding such as a mattress is placed, bed rails removably provided on each of the head side and foot side of this frame, telescopic columns provided on these bed rails so as to be able to expand and contract in the vertical direction, and the head side. and a counter-threaded screw rod installed on each bed rail on the foot side so as to be freely rotatable in the width direction; a movable member that moves in the width direction of the bed rail; a connecting cable that has one end connected to the movable member and the other end connected to the upper end of the telescoping strut to transmit movement of the movable member to the telescoping strut; and a connecting cable that moves along the frame. a removable connecting shaft that is provided on the head side and connects the rotational force of the reversely threaded screw rod on the head side and the reversely threaded screw rod on the foot side; and a drive that is provided on the one bed rail and that applies rotational force to the connecting shaft. A bed device characterized by comprising: