JPH0214847B2 - - 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 a movement 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 winding pulley on the bed rail which is detachably provided on the head side and the foot side of the frame, winds one end of the connecting cable around the winding pulley, and winds the other end of the connecting cable around the winding pulley. is connected to a telescopic strut provided on the bed rail, and the connecting cable is let out by rotation of a take-up pulley, so that the telescopic struts on the head side and the foot side can be moved 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 7 show a first embodiment, and 1 is a frame on which bedding such as a pine mattress is placed. Bed rails 2, 2 are provided on the head side 1a and foot side 1b of the frame 1, respectively, so that fibers can be attached freely. That is, at the corners of the headboard side 1a and the 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 the pins 2c, 2c of the bed rails 2, 2 to the frame 1 and the bed rails 2, 2, respectively. Furthermore, the bed rails 2, 2 are provided with telescopic struts 3 which are vertically extensible and constitute strut 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 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 the telescopic column 3, and a sliding body 8 that slides 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 strut 4a and the outer surface of the telescopic strut 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
There are winding mechanisms 10, 10 of the same structure between a.
is provided. That is, 11 is a support fixed to the bed rail 2, and this support 11 is provided with a gear box 12. A rotary shaft 13 is rotatably supported in the center of the gearbox 12, and a drive gear 14 is fitted onto the rotary shaft 13. Further, support shafts 15, 15 are provided in parallel on both sides of the rotating shaft 13,
Driven gears 16, 16 that mesh with the drive gear 14 are rotatably fitted to these support shafts 15, 15. Take-up pulleys 17, 17 are integrally provided on one side of these driven gears 16, 16. One end side of connecting cables 18, 18 such as belts or wires are wound around these take-up pulleys 17, 17. These connecting cables 18, 18 are led out from the gear box 12 and are stretched around pulleys 19, 19 provided on the bed rail 2. Therefore, the connecting cables 18, 18 are divided into left and right sides centering on the drive gear 14, and further divided into left and right sides around the drive gear 14.
It is guided to the gap 9 in the support column 4a via pulleys 20, 20 provided on the side walls of the columns a, 4a. The other ends of these connecting cables 18, 18 are connected to sliding bodies 8, 8 provided at the upper ends of the telescopic columns 3, 3, respectively.

Further, the gearbox 12 on the foot side 1b is provided with a two-axis motor 21 as a drive section. One rotating shaft 2 of this two-shaft motor 21
2 is directly connected to the rotating shaft 13 in the gear box 12, and the other rotating shaft 23 protrudes toward the headboard side 1a. One end of a connecting shaft 24 is detachably connected to the other rotating shaft 23 by a pin 25, and the other end is connected to the rotating shaft 13 in the gear box 12 on the head side 1a by a pin 26. They are detachably connected. The connecting shaft 24 is close to the bottom surface of the frame 1, and forms a space 27 in the lower part of the frame 1.

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

When the operating unit (not shown) is operated to rotate the two-shaft motor 21 in the forward direction from the state shown in FIGS. 1 to 3, the rotation shaft in the gear box 12 on the foot side 1b is A drive gear 14 rotates via 13. The rotation of the drive gear 14 causes the driven gears 16, 16 to rotate, and together with this, the take-up pulleys 17, 17 rotate in the same direction.
Therefore, one end side of the connecting cables 18, 18 is wound around the take-up pulleys 17, 17 and drawn into the gear box 12, and the connecting cables 1 in the support column 4a are
8 and 18 are drawn out at the same time. That is, the sliding bodies 8, 8 are pulled down by the connecting cables 18, 18, 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 24, the four support legs 4 extend simultaneously, and the height of the frame 1 can be raised. 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.

Further, when the height of the frame 1 is to be lowered, the take-up pulleys 17, 17 can be rotated in the opposite direction by rotating the two-axis motor 21 in the opposite direction using the operating section. Therefore, the connecting ropes 18, 18
is let out from take-up pulleys 17, 17. 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 18, 18,
The telescopic struts 3 are retracted while drawing the connecting cables 18, 18 into the struts 4a. 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. 8 shows a second embodiment, in which a manual type is used instead of an electric type. That is, the gearboxes 1 on the head side 1a and the foot side 1b
The rotating shafts 13, 13 provided on the shafts 2 and 12 are connected to each other by a connecting shaft 24, and a handle 28 is provided on the gear box 12 on the foot side 1b, which is directly connected to the rotating shaft 13. With this configuration, the connecting shaft 24 can be rotated by operating the handle 28 provided on the foot side 1b, and the take-up pulley 17,
17 can be rotated to simultaneously expand and contract the four telescoping columns 3. Therefore, the head side 1a
Even if the frame 1 is installed pressed against a wall or the like, the height of the frame 1 can be adjusted on the foot side 1b. Furthermore, in each of the embodiments described above, a pair of take-up pulleys 17, 17 were provided on the head side 1a and foot side 1b, respectively, and the left and right connecting cables 18, 18 were wound up and let out. One pulley may be provided, and the left and right connecting cables may be wound around one take-up pulley.

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, the pins 2 at both ends of the connecting shaft 24
5 and 26, the connecting shaft 24 can be separated from the rotating shafts 23 and 13. Therefore, it can be disassembled into one frame 1, two bed rails 2, and one connecting shaft 24 and packed compactly, and the assembly work is also easy.

〔Effect 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 a winder for winding and unwinding the connecting rope connected to the telescoping struts. Since the pulleys 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 7 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 3, and Figure 6 is a sectional view taken along the - line in Figure 3. The figure is a cross-sectional view taken along the - line in Fig. 2, Fig. 7 is a side view showing the connecting portion between the frame and the bed rail, and Fig. 8 is a cross-sectional plan view of the winding mechanism showing the second embodiment of the present invention. It is. 1... Frame, 1a... Head side, 1b...
Foot side, 2... Bed fence, 3... Telescopic support, 17
... Winding pulley, 18 ... Connection cable, 21 ... 2-shaft motor (drive section), 24 ... 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 winding mechanism having a locking part for holding the bed in a vertical state, a winding pulley provided on the bed rails on the head side and the foot side, one end of which is wound around the winding pulley and the other end of which is wound around the upper end of the telescoping column; a connecting cable connected to the frame, a connecting shaft having both ends provided along the lower surface of the frame that can be attached to and detached from the winding mechanism, and applying rotational force to the winding mechanism to wind up the connecting cable. A bed device comprising: a drive unit for feeding out the bed;