JPH0214848B2 - - Google Patents

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 mattress is placed can be arbitrarily adjusted.

[Technical background of the invention and its problems]

BACKGROUND OF THE INVENTION Among bed apparatuses 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 structures for the adjustment mechanism that adjusts the height of the frame, but for example, Jikosho's
As shown in Japanese Patent No. 55-40046, a typical example is one provided with extendable legs.

In this system, fixed columns are provided on each of the headboard side and the 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 telescopic columns are provided on the headboard side and the footboard side, respectively, and the frame is moved up and down by independently operating these adjustment mechanisms. In other words, when adjusting the height of the frame, first operate the adjustment mechanism on the headboard side to extend or retract the telescoping columns on the headboard side, then operate the adjustment mechanism on the footboard side to extend or retract the footboard side. The support column is expanded and contracted to match the height of the frame on the headboard side.

In this case, in general, in a hospital room or the like, the bed is often installed with the headboard side of the bed 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 have to move the bed and move it 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 and footboard sides.

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 changing clothes for the patient or an auxiliary bed for an attendant, it is inconvenient because it cannot be used.

In addition, as shown in Utility Model Publication No. 59-12894,
A bed in which telescopic legs are provided at the four corners of the bed base frame, and the bed base frame is raised and lowered horizontally by interlocking these legs and simultaneously extending and contracting the legs using a single handle. is also publicly known.

However, since the bed base frame and the legs are integrated, the bed cannot be disassembled during transportation, and the package is large and very inconvenient to handle.

[Purpose of the invention]

This invention was made with attention to the above-mentioned circumstances, and its purpose is to be able to adjust the height of the frame by simultaneously expanding and contracting the telescopic columns on the head side and the foot side, and to reduce the space in the lower part of the frame. To provide a bed device which can be widely and effectively used, has a frame, a bed rail, and an interlocking shaft that can be disassembled, and is convenient for packing and transportation.

[Summary of the invention]

In order to achieve the above-mentioned object, the present invention provides a telescopic column that can extend and contract with respect to the bed rails that are detachably provided on the head side and foot side of the frame, and that can be moved up and down by the rotation of the screw rod. A movable member is provided, the movable member and the telescopic column are connected by a connecting rope, and the screw rods 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. There is a particular thing.

[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, at the corners of the headboard side 1a and footboard side 1b of the frame 1, a connecting plate 2b as a locking part having hooks 2a, 2a is provided. On the other hand, the bed rail 2,
2 has two pins 2c, 2c spaced apart in the vertical direction.
is provided protrudingly, and the hook 2 of the frame 1
The frame 1 and the bed rails 2, 2 are removably connected by hooking them to the pins 2c, 2c of the bed rails 2, 2. Further, the bed rails 2, 2 are provided with telescopic columns 3 that can be freely extended and contracted in the vertical direction, and constitute support legs 4. These support legs 4... have the same configuration, and the bed rail 2
The support column 4a is formed into a rectangular tube shape, and a guide body 6 having a guide hole 5 is provided at the lower end opening thereof. The telescoping strut 3, which also has a rectangular tube shape, is inserted into the strut 4a, and the telescoping strut 3 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 slides inside the column 4a is attached to the upper end inserted into the column 4a.
is fixed. 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 supports 4a, 4 of the bed rails 2, 2 on the head side 1a and foot side 1b of the frame 1
Between a are vertical movement mechanisms 10 and 1 of the same structure, respectively.
0 is set. In other words, 11 is the bed rail 2
This is a support cylinder fixed perpendicularly to the support cylinder 11, and a reverse screw screw rod 13 whose both ends are pivotally supported by fixing members 12, 12 is rotatably installed in the support cylinder 11. This reverse thread screw rod 1
A bevel gear 14 is fitted in the longitudinally intermediate portion of 3, and a right-handed screw 13 is fitted on the right side of the bevel gear 14.
A is provided with a left-hand thread 13b on the left side. Movable members 15a and 15b made of nuts are screwed into the right-hand thread 13a and left-hand thread 13b, respectively. Furthermore, these movable members 15a,
Connecting rope 1 such as a belt or wire is attached to 15b.
6 and 16 are connected at one end with a screw or the like. These connecting cables 16, 16 are fixed members 12, 1
It is guided in the left-right direction along the guide groove 17 of No. 2, and is stretched between 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 these connecting cables 1
The other ends 6, 16 are connected to sliding bodies 8, 8 provided at the upper ends of the telescopic columns 3, 3, respectively.

Further, gear boxes 19, 19 are provided in the support tubes 11 of the bed rails 2, 2, and the foot side 1
The gearbox 19 in b is provided with a two-shaft motor 21 as a drive section. One rotating shaft 22 of this two-shaft motor 21 projects toward the foot side 1b, and the other rotating shaft 23 projects toward the head side 1a. The rotating shaft 22 is connected to a bevel gear 24 as a gear mechanism in the gear box 19 on the head side 1a.
25 to the bevel gear 14 of the counter-threaded screw rod 13. In addition, the 2-axis motor 2
One end of a connecting shaft 26 is removably connected to the other rotating shaft 23 of the head side 1a by a pin 27, and this other end is connected to the rotating shaft 24a of a bevel gear 24 provided in the gear box 19 on the head side 1a. It is removably connected to by a pin 28. The connecting shaft 26 is close to the bottom surface of the frame 1, and forms a space 29 at the bottom of the frame 1.

Note that 30a and 30b are movable members 15a and 15
31 is a limit switch that detects the rightmost end and leftmost end of
This is a fixing screw to maintain the height after adjusting it to the desired height.

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

When the two-shaft motor 21 is rotated, for example, in the forward direction by operating the operating section (not shown) from the state shown in FIGS. 24, 25
rotates, and the connecting shaft 26 is moved from the rotating shaft 23 to the connecting shaft 26.
Bevel gears 24 and 25 in the gearbox 19 on the head side 1a rotate through the gearbox 19. Accordingly, the reverse threaded screw rod 13 rotates, and with this rotation, the movable members 15a and 15b, which are screwed together, move in opposite directions. That is, the movable member 15a screwed onto the right-hand thread 13a moves leftward, and the movable member 15a screwed onto the right-hand thread 13a
The movable member 15b screwed together moves to the right. 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 are pulled in at the same time.
are drawn out at the same time. That is, the sliding bodies 8, 8 are pulled down by the connecting ropes 16, 16, and the telescopic columns 3, 3 protrude from the lower end of the column 4a. Since this operation is performed simultaneously on the head side 1a since they are connected by the connecting shaft 26, the four support legs 4 extend simultaneously, and the height of the frame 1 can be raised. When the height of frame 1 reaches the desired position as shown in FIG.
By stopping the shaft motor 21, the frame 1
can be held at the desired height.

Further, when the height of the frame 1 is to be lowered, the oppositely threaded screw rod 13 can be rotated in the opposite direction by rotating the two-axis motor 21 in the opposite direction using the operating section. Therefore, the movable member 1
5a, 15b move outward within the support tube 11, and the connecting cables 16, 16 inside the support tube 11 are let 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 cables 16, 16, the telescopic struts 3...
...I am immersed in it as I draw it inside. 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 remotely. If it is a control type, the patient can easily operate it 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 a connecting shaft 26, and
The gearbox 19 is provided with a handle 31 that is directly connected to the bevel gear 24. With this configuration, the connecting shaft 26 can be rotated by operating the handle 31 provided on the foot side 1b, and the reverse threaded screw rods 13, 13 can be rotated by operating the handle 31 provided on the foot side 1b. By rotating, the four telescopic columns 3 can be expanded and contracted at the same time. Therefore, even if the head side 1a is installed with the head side 1a pressed against a wall or the like, the height of the frame 1 can be adjusted on the foot side 1b.

In addition, when packing and transporting the bed device, hooks 2a, 2a provided on the connecting plate 2b of the frame 1 are used.
By removing the pins 2c, 2c of the bed rails 2, 2, the frame 1 and the bed rails 2, 2 can be disassembled. Furthermore, pins 2 at both ends of the connecting shaft 2b
By removing 7 and 28, the connecting shaft 26 can be separated from the rotating shafts 23 and 24a. Therefore, it can be disassembled into one frame 1, two bed rails 2, and one connecting shaft 26 and packed compactly, and the assembly work is also easy.

[Effects of the Invention] As explained above, according to the present invention, the height of the frame can be adjusted by simultaneously expanding and contracting the telescoping struts on the head side and the foot side, and the connecting rope connected to the telescoping struts can be retracted. Since the reverse threaded screw rods to be fed out are connected by the connecting shaft provided along the lower surface of the frame, there is an effect that the lower space of the frame can be widely and effectively utilized. Furthermore, since the frame, bed rail, and connecting shaft can be disassembled, the device can be disassembled and packed, and transportation work can be facilitated.

[Brief explanation of drawings]

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 a cross-sectional view taken along the line - in FIG. 1. Figure 3 is a sectional view taken along the - line in Figure 2, Figure 4 is a side view of the bed device with the frame elevated, Figure 5 is a sectional view taken along the - line in Figure 2, and Figure 6 is a sectional view taken along the - line in Figure 2. The figure is a sectional view taken along the - line in Fig. 2, Fig. 7 is a sectional view taken along the - line in Fig. 2, Fig. 8 is a sectional view taken along the - line in Fig. 2, and Fig. 9 shows the frame and bed. Side view showing the connection part of the fence, No. 10
The figure is a longitudinal sectional side view showing a second embodiment of the invention. 1... Frame, 1a... Head side, 1b...
Foot side, 2... Bed fence, 3... Telescopic support, 13
...Reverse thread screw rod, 15a, 15b...
...Movable member, 16...Connection cable, 21...Two-shaft motor (drive unit), 26...Connection shaft.

Claims (1)

[Claims] 1 Consists of a frame on which bedding such as a pinerest is placed, bed rails provided on each of the head side and foot side of this frame, and telescoping columns provided on these bed rails so as to be able to expand and contract in the vertical direction. In the bed device in which the height of the frame can be adjusted by expanding and contracting, the bed rail is provided at the head side and foot side ends of the frame and removably engages with the bed rail, and the bed rail is attached to the frame. A locking part that holds the bed in a vertical position, a reverse screw screw rod that is rotatably installed in the width direction on the bed rails on the head side and foot side, and a gear mechanism that interlocks with the middle part of the reverse screw screw rod. and a movable member that is screwed onto the left-hand threaded portion and the right-hand threaded portion of the reverse-threaded screw rod and moves in the width direction of the bed rail as the reverse-threaded screw rod rotates, and one end of which is connected to the movable member. a connecting cable whose other end is connected to the upper end of the telescopic column and transmits the movement of the movable member to the telescopic column; a reverse threaded screw rod on the head side and a reverse threaded screw rod on the foot side provided along the lower surface of the frame; A connecting shaft that interlocks the rotational force with the eurotsud and has both ends detachably attached to the gear mechanism, and a drive section that is provided on the one bed rail and applies the rotational force to the connecting shaft. A bed device featuring: