JPS5832692Y2 - overbed table - Google Patents

Description

[Detailed description of the invention] This invention allows patients, etc. to eat, read, apply makeup, etc. while staying on the bed by constructing it in the short direction of the bed, and when not in use, the bed is installed on the base. This invention relates to an overbed table that can be easily removed from a bed by moving in the longitudinal direction of the bed using casters.

Some such overbed tables are designed to allow the height of the top plate to be adjusted by extending and contracting the support columns relative to the pillars, but conventionally, such adjustments had to be made alternately on each side. However, in addition to being time-consuming, the top plate tilts left and right during adjustment, which has the disadvantage that it cannot be done while objects are placed on it.

This invention completely prevents the top plate from tilting when adjusting the height, and fixes the height of the top plate by linking the left and right columns so that they can extend and contract with respect to the pillars. This makes the operation of the stopper extremely easy and reliable.

The present invention will be described in detail below based on examples.

Reference numeral 1 is an upper plate, and 2 is an upper plate support frame.

The upper plate 1 may be of any configuration, such as a simple deck or a saucer or a foldable lectern.

Supports 3 and 3' are provided on the left and right sides of the upper plate support frame 2 to project downward.

Reference numerals 4 and 4' are base bodies constructed separately for the left and right parts, and 5
．． 5' is a pillar erected on the bases 4, 4'.

The respective pillars 3, 3' are telescopically fitted to the pillars 5, 5'.

In the embodiment, the struts 3, 3' are fitted into the pillars 5, 5', but it goes without saying that the reverse may be used.

A lower guide wheel 6, 6' is provided at the bottom of each of the pillars 3, 3'.
At the same time, two sets of upper guide wheels 7.7' and 8.8', one on the left and one on the left, are provided on the upper part, respectively.

The upper plate support frame 2 supports a pair of connecting rods 9, 9' so as to be movable in the left-right direction, and at least support the connecting rods 9, 9' immovably in the direction in which the distance between them narrows. A guide support part 10 is provided.

The guide support part 10 is provided with a locking piece 12 having a rotation shaft 11 between the pair of connecting rods 9, 9', and locking protrusions 13, which are provided at both ends of the locking piece 12 and protrude inwardly. 13' corresponds to the outside of the pair of connecting rods 9.9'.

Furthermore, locking projections 14.14' corresponding to the locking protrusions 13, 13' are provided on the outside of the pair of connecting rods 9.9'.

The locking piece 12 is provided with an operating lever 15 and a spring 16 that biases the locking protrusions 13, 13' in a direction to press against the outside of the connecting rods 9, 9'.

Thus, the flexible wrappers 17 and 17', whose sides a and a' are fixed to the upper parts of the respective pillars 5 and 5', are successively attached to the lower guide wheels 6 and 6', respectively, and the two-part guide wheel 7. . are fixed to the other pillars 5' and 5, respectively.

In addition to wire, the flexible winding member 17, 17' may be a belt, or may be a chain depending on the case.

The operation of the present invention in such a configuration without taking the locking piece 12 into consideration will be explained as follows.

That is, when the column 5 on the right side in the figure is shortened into the column 5, the flexible wrapper 17 whose negative side a is fixed to the upper part of the column 5 is pushed down by the lower guide wheel 6 and is moved through the connecting rod 9. Then, the support column 3' on the other side is also shortened into the support column 5'.

Further, when the support column 3 is extended from the pillar column 5, the flexible winding hook 17' is connected to the one side a via the connecting rod 9' because the distance between the upper guide wheel 8' and the other side b' becomes longer. ', and the other strut 3' also extends from the pedestal 5'.

In this way, the present invention allows the support columns 3 and 3' on one side to expand and contract at the same time even when force is applied to only the support columns 3 and 3' on the other side.
Since the supports 3' and 3' expand and contract in the same way, when adjusting the height of the upper plate 1 by expanding and contracting the supports 3 and 3', the upper plate 1 does not tilt, so that articles cannot be placed on the upper plate 1. The height can be adjusted without dropping the item even when it is placed, and there is no need to hold both left and right sides of the upper plate 1 when adjusting the height, making the adjustment easy. To,
Moreover, it can be done quickly.

The locking piece 12 is rotated by the biasing force of the spring 16, and the locking protrusions 13 and 1 are provided at both ends of the locking piece 12 and projecting inwardly.
3' is in pressure contact with the outside of the connecting rods 9, 9', but at this time, the connecting rods 9, 9' are supported by the guide support part 10 so that the distance between them does not narrow. , the locking protrusions 13, 13' and the locking projections 14, 14' are well engaged, so that the connecting rods 9, 9' cannot be moved and the upper plate 1 is held in a predetermined position against gravity. Can be fixed at height.

Next, the upper plate 1 is lowered by operating the operating lever 15 to rotate the locking piece 2 to release the engagement between the locking protrusions 13, 13' and the locking projections 14 and 14'. This can be done by

Further, the upper plate 1 may be raised by operating the operating lever 15 in this manner, but it is also possible to raise the upper plate 1 by operating the operating lever 15 in this manner. An inclined portion 18 is formed on the upper plate 1 so that the locking protrusions 13, 13' and the locking projections 14, 14' do not engage in the direction in which the connecting rods 9, 9' move when the upper plate 1 rises. If you do this, you can do it without any operation, and if you lift your hand appropriately and release your hand, the locking protrusions 13, 13' and the locking projections 14, 14' will be released by the biasing force of the spring 16. When engaged, the upper plate 1 can be automatically fixed.

As described above, the present invention can automatically fix the upper plate 1, so there is no possibility of erroneous operation, and there is no risk of the upper plate 1 being accidentally dropped.

Moreover, since the upper plate 1 is fixed by simultaneously locking the respective connecting rods 9 and 9' with the locking pieces 12, the flexible winding hanging body 1
7.17' is fixed at the same time in a symmetrical position and the upper plate 1
Since the load is equally divided, the upper plate 1 can be fixed with sufficient strength compared to a method in which only one side is fixed, and the upper plate 1 can be kept horizontally.

As described above, the present invention rationally uses the flexible wrapper to make the left and right columns of the upper plate expandable and retractable in conjunction with the respective pillars, so the upper The upper plate can be maintained horizontally when the plate is raised and lowered, and it is automatically fixed at a predetermined raised and lowered position using frictional force.
This device has a number of features such as being able to prevent the top plate from falling due to erroneous operation, and since the fixing is done symmetrically, the top plate will never tilt even if the load is uneven.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the conventional technology, FIGS. 2 a and b are schematic vertical cross-sectional views showing the configuration and operation of an embodiment of the present invention, and FIG. 3 is an enlarged explanation of essential parts of an embodiment of the present invention. Perspective view, Figure 4a
, l) is an enlarged explanatory sectional view of the main part showing the operation of the main part of the present invention. Code: 1... Upper plate, 2...-L plate support frame, 3, 3'... Support column, 4, 4'......
Base, 5, 5'... Pillar, 6, 6'...
・Lower guide wheel, 7, 7', 8, 8'... Upper guide wheel, 9.9'... Connecting rod, 10...
Guide support part, 11...Rotation axis, 12...
- Locking piece, 13.13'...Lock protrusion, 14.
14'... Locking unevenness, 15... Operation lever, 16... Spring, 17.17'...
・Flexible winding body, 18... Inclined part, a, a'-・
...- side, b, b'-...other side.

Claims (1)

[Scope of utility model registration request] Support pillars are provided protruding from the lower left and right sides of the upper plate support frame, and each of the support pillars is telescopically fitted into a pedestal installed on the base, and a lower guide wheel is installed at the bottom of each of the pillars, and a lower guide wheel is installed at the upper part of the support frame. A pair of upper guide wheels are provided, and a pair of connecting rods are supported on the upper plate support frame so as to be movable in the left and right direction, and a guide supported immovably at least in the direction in which the mutual spacing is narrowed. A support part is provided, and the guide support part is provided with a locking piece having a rotating shaft between the pair of connecting rods, and a locking protrusion protruding inwardly at both ends of the locking piece is used to connect the pair of connecting rods. A flexible winding hanging body is provided on the outside of the rod and has locking projections corresponding to the locking protrusions on the outside of the pair of connecting rods, and the − side is fixed to the top of each of the pillars. , and sequentially wrap it around the lower guide wheel and the upper guide wheel, and extend it to the other pillar side via the connecting rod and wrap it around the upper guide wheel to fix the other side to the other pillar, respectively. An overbed table characterized in that the locking piece is provided with an operating lever and a spring that biases the locking protrusion in a direction in which the locking protrusion comes into pressure contact with the outside of the connecting rod.