JPH024659Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a bed device particularly suitable for hospital use.

[Technical background of the invention and its problems]

In general, hospital bed devices require handrails that protrude from the top of the bed base to prevent sick users from falling off the bed or to grab onto when getting up on the bed. be. This handrail is provided on the side of the bed base, but if it is fixed to the side, it will get in the way during medical examinations or when the patient gets off the bed.

Therefore, in order to allow the handrail to be removed from the upper surface of the bed base during medical examination or when a patient gets off the bed, it is provided so that it can be moved up and down. In order to provide the handrail so that it can move up and down, supports are provided upright at both ends of the sides of the bed, and both ends of the handrail are slidably supported by these supports. however,
Since the handrail that extends almost the entire length of the side of the bed is quite long, it tends to tilt in the longitudinal direction when moving the handrail up and down, making it difficult to move it horizontally up and down. This has resulted in the drawback that the sliding resistance between the handrail and the support increases, making it impossible to move the handrail up and down smoothly.

[Purpose of invention]

The object of this invention is to provide a bed device in which a handrail whose longitudinal ends are slidably supported can be smoothly moved up and down without tilting.

[Summary of the idea]

This idea consists of a pair of supporting tubes, each with a slit extending the entire axial length, erected in parallel on the sides of the bed base, and a pair of support tubes provided in the slits at both ends of the upper and lower cross bars of the handrail. The engaging bodies are slidably engaged, and an upper guide body and a lower guide body are respectively provided at both ends of the upper horizontal rod protruding into the support tube, and one end is fixed to the upper part of one of the support tubes. A pair of wires is provided by fixing the end to the lower part of the other support pipe body and slidably engaging the middle part to the upper guide body on one end side and the lower guide body on the other end side of the upper horizontal rod, and This is a bed device in which an equal force is applied to both ends of the handrail in the longitudinal direction when the handrail is moved up and down using wires.

[Example of idea]

An embodiment of this invention will be described below with reference to the drawings. The bed device shown in FIG. 1 includes a base 1. The bed device shown in FIG. This base body 1 has a rectangular shape, and pillars 2 are erected at the four corners, and board bodies 3 are provided at each end in the longitudinal direction. Further, a mattress 4 is placed on the upper surface of the base 1, and legs 6 having casters 5 at the lower ends are attached to the four corners of the lower surface.

Each of the four pillars 2 is provided with a rectangular cylindrical support tube 7 whose upper and lower ends are connected by a connecting piece 8. A slit 9 is formed in the side surface of each pair of support tubes 7 located on both sides of the base body 1, extending substantially over the entire length in the axial direction. These slits 9
Both longitudinal ends of the handrail 10 are slidably engaged with the handrail 10. That is, the handrail body 10 is formed by connecting a cylindrical upper horizontal rod 11 and a lower horizontal rod 12 spaced apart in parallel in the vertical direction with a plurality of vertical rods 13, and the above-mentioned slits are provided at both ends of each horizontal rod 11, 12. Engagement rollers 14 as engagement bodies that engage with the rollers 9 are rotatably provided. Therefore, the handrail body 10 is vertically movable along the support tube body 7. At both ends of the upper horizontal rod 11 protruding into the support tube 7, a mounting body 16 has a mounting groove 15 formed therein as shown in FIGS. 3 and 4. It is fixed with screws 17 along the axial direction. In the mounting groove 15, an upper guide roller 18 and a lower guide roller 19, each serving as a guide body, are rotatably provided by a support shaft 20. Two engagement grooves 21 are formed on the outer peripheral surface of each guide roller 18, 19.

The middle portions of the first wire 22 and the second wire 23 are inserted into the upper horizontal rod 11 . One end of the first and second wires 22 and 23 led out from both ends of the upper horizontal rod 11 are respectively engaged with the upper guide roller 18, and their ends are connected to the support tube 7 as shown in FIG. It is coupled to an upper mounting plate 24 provided at the inner upper end. Further, the other ends of the first and second wires 22 and 23 are respectively engaged with lower guide rollers 19, and the ends thereof are attached to a lower mounting plate 25 provided at the inner lower end of the support tube 7 with a spring 2.
6. The first wire 22 and the second wire 23 intersect inside the upper horizontal rod 11, and one end of the first wire 22 is attached to the intersecting part.
2, a spring 27 whose other end is connected to the second wire 23 is stretched. Note that the first wire 22 is engaged with a corresponding one side of the two engagement grooves 21 formed in the upper guide roller 18 and the lower guide roller 19, and the second wire 23 is engaged with the other side. It matches. Therefore the first wire 22
Since the second wire 23 and the second wire 23 are shifted in the width direction,
never come into contact with each other.

Support plates 31 are fixed to both ends of the lower horizontal beam 12 of the handrail 10, respectively. Both ends of a gripping rod 32 are rotatably supported by these support plates 31, respectively. As shown in FIGS. 5 and 6, locking pieces 34 having recesses 33 are fixed to both ends of the gripping rod 32 that protrude into the support tube 7. As shown in FIGS. Between this locking piece 34 and the support plate 31 is a spring 3 attached to the gripping rod 32.
5 is provided, and this spring 35 urges the gripping rod 32, that is, the locking piece 34 in the direction shown by the arrow in FIG. Further, a stopper 36 is provided approximately halfway in the height direction inside the support tube 7.
is fixed. Then, the handrail body 10 is attached to the base 1
When raised to a position where it protrudes from the top side,
The recess 33 of the locking piece 34 engages with the stopper 36, so that the handrail 10 is held in the raised position. Further, the engagement between the stopper 36 and the locking piece 34 can be released by rotating the gripping rod 32 against the biasing force of the spring 35.

According to such a structure, when the handrail body 10 is raised from the lowered state shown in FIG.
2 and 23, it is almost evenly distributed at both ends in the longitudinal direction. That is, when the handrail body 10 is raised, the first wire 22 must be set at one end of the upper horizontal rod 11 by a length that can be relatively sent from the lower guide roller 19 in the direction of the arrow a, as shown in FIG. The lengths of the second wire 23 sent from the upper guide roller 18 in the direction of arrow b coincide with the lengths of the first wire 22 sent from the upper guide roller 18 in the direction of arrow b. The length of the second wire 23 fed in the direction c matches the length of the second wire 23 fed from the lower guide roller 19 in the direction d. Therefore, the amount of movement of the handrail body 10 relative to the support tube body 7 at both ends in the longitudinal direction is the same due to the first and second wires 22 and 23. In other words, the lifting force applied to the handrail body 10 is distributed almost evenly at both ends in the longitudinal direction, so that the handrail body 10 can be smoothly raised without inclining with respect to the longitudinal direction. can. Moreover,
Even if no lifting force is applied to the longitudinal center of the handrail 10, the amount of movement at both ends of the handrail 10 is the same as described above due to the action of the first and second wires 22, 23. In this case as well, the handrail 10 can be raised smoothly.

Further, when the handrail body 10 is raised, the spring 27 tensioned in the portions of the first and second wires 22 and 23 located inside the upper horizontal beam 11 is activated by the restoring force of the spring 27 to Since the wires 22 and 23 are biased in the same direction as the arrows a to d mentioned above, the handrail body 10 can be raised with a light force by this biasing force.

Furthermore, when the handrail body 10 is lowered, the first and second wires 22 and 23 move in the direction opposite to the directions of the arrows a to d described above with respect to the upper guide roller 18 and the lower guide roller 19. It can be lowered smoothly in the same way as when it is raised.
Also, at this time, the first and second wires 22, 23
moves while stretching the spring 27 against its restoring force, the handrail 10 can be gently lowered by the resistance of the spring 27.

[Effect of idea]

As described above, this invention provides an upper guide body and a lower guide body at both ends of the upper horizontal bar of the handrail body, and connects the midway portions of the first wire and the second wire to the upper guide at one end. When the handrail is moved up and down by these wires, the amount of movement at both ends of the handrail is approximately the same. Therefore, when moving the handrail up and down, the handrail does not tilt in the longitudinal direction even if no force is applied to the center in the longitudinal direction, so the sliding resistance of the handrail increases and the handrail moves up and down smoothly. There's no way you won't be able to move it. Furthermore, since the spring is provided by connecting one end to one midway part of the pair of wires and the other end to the other end, when the handrail body is raised, the force that causes the spring to contract is applied to the pair of wires. This allows the handrail to be raised easily with a light force, and when lowered, the spring is stretched by a pair of wires, so the handrail can be lowered gently by the resistance. be.

[Brief explanation of drawings]

The drawings show one embodiment of this invention, in which Fig. 1 is a perspective view of the bed device, Fig. 2 is a cross-sectional view of the handrail mounting structure, Fig. 3 is a plan view of the end of the upper crossbar, and Fig. 4 is a perspective view of the bed device.
The figure is a cross-sectional view along the line of Figure 3, Figure 5 is a configuration diagram of the end of the lower crossbar, Figure 6 is a side view along the line of Figure 5, and Figure 7 is a raised handrail. FIG. 4 is an explanatory diagram of the relative relationship between the first and second wires and the upper and lower guide bodies at this time. DESCRIPTION OF SYMBOLS 1...Bed base, 7...Support pipe body, 9...Slit, 10...Handrail body, 11...Upper horizontal bar, 1
2... Lower horizontal rod, 14... Engagement roller (engagement body),
18... Upper guide roller (upper guide body), 1
9... Lower guide roller (lower engaging body), 22,
23...Wire.

Claims (1)

[Scope of utility model registration request] A bed base, a pair of support tubes erected parallel to and spaced apart from the sides of the bed base, slits formed on opposing sides of these support tubes over the entire length in the axial direction, and upper and lower slits. A handrail body has an upper horizontal rod and a lower horizontal rod spaced apart from each other parallel to the direction, and an engaging body is provided at both ends of each horizontal rod to slidably engage with the slit, and An upper guide body and a lower guide body respectively provided at both ends protruding into the support tube, one end fixed to the top of one support tube and the other end fixed to the bottom of the other support tube, and an intermediate part. is a pair of wires that are slidably engaged with the upper guide body on one end side of the upper horizontal rod, and one end of the pair of wires is located in the middle of the upper guide body and the lower guide body. 1. A bed device comprising: a spring which is connected to the handrail body and is tensioned with its other end connected to the other end and is elastically deformed against a restoring force when the handrail body is lowered.