JPH0214846B2 - - 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 bedclothes are 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 for example,
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 The telescopic struts are extended and contracted to match the height of the frame on the headboard side.

In this case, in general, in a hospital room, 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 headboard 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 a patient's changing clothes 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 8 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 bedboard 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 protruding pins 2c, 2c spaced apart in the vertical direction, and hooks 2a, 2c of the frame 1.
The frame 1 and the bed rails 2, 2 are removably connected by locking the frame 2a to the pins 2c, 2c of the bed rails 2, 2. In addition, the bed rails 2, 2
There is a telescopic support column 3 installed in the vertical direction...
are provided and constitute support legs 4... These support legs 4... have the same configuration, and the pillar 4a of the bed rail 2 is formed into a rectangular tube shape.
A guide body 6 having a guide hole 5 is provided at this lower end opening. 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, there is a gap 9 between the inner surface of the fixed column 2 and the outer surface of the telescopic column 3.
is formed.

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
A gear box 14 is provided inside the support tube 11, which has an upper support plate 12 at the upper part and a lower support plate 13 at the lower part. The upper support plate 12 and the lower support plate 13 have bearings 12a and 1 facing each other.
3a, and a screw rod 15 passing through the support cylinder 11 is provided between these bearings 12a and 13a.
Both ends are rotatably supported. This screw rod 15 has a movable member 16 made of a nut.
are screwed together, and this movable member 16 engages with a guide groove 17 provided in the support tube 11 so as to be able to move only up and down. That is, the movable member 16 is moved into the guide groove 17 by the forward and reverse rotation of the screw rod 15.
It is designed to move up and down inside. Furthermore, notches are provided on both sides of the movable member 16, and one ends of connecting cables 18, 18, such as belts or wires, are connected to these notches by screws. These connecting cables 18, 18 are guided downward along the guide groove 17, 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 screw rod 15, and are further divided into left and right sides with the screw rod 15 as the center.
The support column 4 is
It is guided to the gap 9 in a. 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 14 on the foot side 1b is provided with a two-shaft motor 21 as a drive section. One rotating shaft 2 of this two-shaft motor 21
2 protrudes toward the foot side 1b, and the other rotating shaft 23 protrudes toward the head side 1a. And rotation axis 2
2 is interlocked with the screw rod 15 via bevel gears 24 and 25 as a gear mechanism in a gearbox 14 on the foot side 1a. Further, one end of a connecting shaft 26 is detachably connected to the other rotating shaft 23 of the two-axis motor 21 by a pin 27.
The other end is the gear box 14 on the head side 1a.
A pin 28 is attached to the rotating shaft 24a of the bevel gear 24 provided inside.
are removably connected. 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 limit switches that detect the upper and lower limits of the movable member 16;
Reference numeral 1 designates a fixing screw for holding the frame 1 in a desired height after adjusting the height by expanding and contracting the telescopic column 3.

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.
The bevel gears 24 and 25 in the gearbox 14 on the head side 1a rotate through the gear. Therefore, the screw rod 15 rotates, and as the screw rod 15 rotates, the movable member 16 to which it is screwed rises. Movable member 1
6, the connecting cables 18, 18 move into the guide groove 1.
7 and the connecting cable 1 in the support column 4a.
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 26, the four support legs 4 extend simultaneously, and the height of the frame 1 can be raised. and,
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 lowering the height of the frame 1, the screw rod 15 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 16 descends along the guide groove 17, and the connecting cables 18, 18 within the guide groove 17 are let out. On the other hand, since the full load of the bed is applied to the telescopic column 3...
If there is play in the connecting cables 18, 18, the telescopic strut 3
. . . is recessed while pulling the connecting cables 18, 18 into the pillars 4a . Therefore, frame 1
The height can be lowered.

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. 9 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 bevel gears 24, 24 provided on the shafts 4 and 14 are connected to each other by a connecting shaft 26, and a handle 32 is provided on the gear box 14 on the foot side 1b, which is directly connected to the bevel gear 24. With this configuration, the connecting shaft 26 can be rotated by operating the handle 32 provided on the foot side 1b, and the screw rods 15, 15 can be rotated as in the first embodiment. The four telescopic columns 3... can be expanded and contracted at the same time. Therefore, even if the head side 1a is pressed against a wall etc., the foot side 1a
At b, the height of the frame 1 can be adjusted.

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 screw rods to be fed out are connected by the connecting shaft provided along the lower surface of the frame, the space under the frame can be widely and advantageously utilized. 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 drawings]

1 to 8 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, and Fig. 8 is a side view showing the connection part between the frame and the bed rail.
FIG. 9 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, 15
... Screw rod, 16 ... Movable member, 18
... Connecting cable, 21 ... Two-axis motor (drive unit), 2
6...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 portion for holding the bed in a vertical position, a screw rod that is rotatable vertically provided on the bed rails on the head side and the foot side, a gear mechanism provided at the lower end of the screw rod, and A movable member that is screwed onto the screw rod and moves up and down as the screw rod rotates; one end is connected to this movable member, the other end is connected to the upper end of the telescopic column, and the vertical movement of the movable member is transmitted to the telescopic column. a connecting cable provided along the lower surface of the frame to interlock the rotational force of a screw rod on the head side and a screw rod on the foot side;
A bed device comprising: a connecting shaft whose both ends are detachably attached to the gear mechanism; and a drive section provided on one of the bed rails and applying rotational force to the connecting shaft.