JPH0415091Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a safety device for an elevating bed that can be stored in the ceiling when not in use.

[Problems to be solved by the prior art and the invention] Today, some of these types of elevating beds have guide bodies protruding from the four corners of the bed frame, and the guide bodies can be moved up and down on guide rails installed vertically in the room. There is a bed frame that can be fitted into the ceiling so that it can be stored in the ceiling when not in use. By the way, in such a device, it is assumed that it would be extremely dangerous if the guide body were to come off the guide rail for some reason, so it is necessary to provide some kind of means to prevent it from coming off. Therefore, as shown in FIG. 5, for example, it is formed of a substantially C-shaped channel material, and the bent part 14 at the opening end is provided with retaining parts 10 on the left and right sides of the tip of the guide body.
It has been considered to have a structure that prevents it from coming out by locking b, but with such a structure,
The work of assembling the guide body into the guide rail must be done by inserting the guide body from above or below the guide rail, which is extremely troublesome work, and the retainers on the left and right sides are large enough to prevent damage during an earthquake. If force is applied, there is a risk that it will bend inward and come off the guide rail, which poses a problem.

[Means for solving the problem] In view of the above-mentioned circumstances, the present invention was devised for the purpose of providing a safety device for an elevating bed that can eliminate these drawbacks. In an elevating bed in which a protruding guide body is fitted into a guide rail installed vertically in a room so as to be able to move up and down, the guide body includes:
The present invention is characterized in that it is provided with a retaining body that can be displaced toward the bottom of the groove of the guide rail, and an elastic force that urges the retaining body in a direction to project from the guide body.

With this configuration, the present invention allows the retaining body that prevents the guide body from coming off to be easily incorporated into the guide rail, and also prevents it from being pulled out even if it is bent by applying a large force. This is what I did.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawing, reference numeral 1 denotes a bed frame of an elevating bed, and the bed frame 1 includes a frame material 2,
It is assembled and formed using members such as a bottom plate 3 and side plates 4, and a guide body 5 protruding from the front and rear ends of the left and right frame members 2 is guided up and down by a guide rail 6 installed vertically in the room. It's getting old. A winding device 7 having an electric motor is disposed above the bottom plate 3.
The tip of the cable 8 extending from the guide rail 6 is connected to the upper end of the guide rail 6. By winding or unwinding the cables 8 by the operation of the winding device 7, the bed frame 1 changes between a storage position where it is accommodated on the ceiling side and a working position where it is used as a bed. It is now possible to set the appearance.

The guide body 5 is connected to an upper chamber 5b by a partition plate 5a.
and a lower chamber 5c are formed as partitions, and an upper chamber 5b
A support roller 9 around which the cable 8 is suspended is supported on the shaft, and a retainer 10 is provided in the lower chamber 5c so as to be able to move outwardly. The rear end portion of the retaining body 10 that sinks into the lower chamber 5c is pressed by the bullet 11 housed in the lower chamber 5c, so that the retaining body 10 always projects in the direction from the lower chamber 5c. is being energized towards. Furthermore, stepped portions 10a are formed on the left and right side surfaces of the distal end portion of the guide body 5 that protrudes from the lower chamber 5c so as to substantially match the outer width of the guide body 5.

The retaining body 10 is prevented from being pulled out from the guide body 5 by a stopper 5e that passes through a long hole 5d provided at the bottom of the guide body 5 and is fixed thereto.

In the embodiment of the present invention constructed as described above, the bed frame 1 is guided by the guide rail 6 to move up and down, but the guide rail 6 may be misaligned for some reason and the tip of the guide body 5 may When the part tries to come off the guide rail 6, the retaining body 10 protrudes in response to the misaligned guide rail 6, and does not come off the guide rail 6. That is, the guide body 5 is provided with a retaining body 10 which is biased by the bullet 11 so as to protrude toward the guide rail 6 side. The retaining body 10 is always pressed so as to be in sliding contact with the bottom surface 6a of the groove of the guide rail 6. Therefore, even if the guide rail 6 is displaced outward for some reason, the retaining body 10 will remain in contact with the groove bottom surface 6a of the guide rail 6. Since it protrudes in response and remains fitted to the guide rail 6, an unexpected situation in which it comes off from the guide rail 6 does not occur. Since the amount of protrusion of the retaining body 10 can be determined freely depending on its length, it is possible to prevent the retaining body 10 from being dislodged from the guide rail 6 as much as possible, making it highly safe, inexpensive, and simple in structure. We will be able to provide it to you as soon as possible. Furthermore, since the retaining body 10 is configured to be pressed and supported by the guide rail 6, there is also the advantage that it acts as a buffer against lateral displacement of the bed frame 1, which is convenient.

In addition, in this case, step portions 10a are formed on the left and right sides of the distal end of the retaining body 10, and the width is approximately the same as that of the guide body 5, so that the guide body 5 can come off the guide rail 6 and the retaining body Even if 10 is in the engaged state in which it protrudes, it will not be in almost the same state as when the guide body 5 is engaged, and unnecessary play will not occur.

It should be noted that the present invention is of course not limited to the above-mentioned embodiment, and for example, as in the second embodiment shown in FIG.
The retaining body 10 is swingably supported on the guide body 5 via a support shaft 12, and the retaining body 10 is biased toward the groove bottom of the guide rail 6 via a torsion spring 13. It can be implemented even if configured. In this case as well, the length of the retaining body 10 provides a retaining action in accordance with the amount of positional deviation of the guide rail 6.

[Function and Effect] In short, the present invention is constructed as described above, so even if the guide rail becomes misaligned for some reason and the guide body comes off from the guide rail, it will not be biased by the ammunition. The retaining body is automatically displaced in response to the positional deviation of the guide rail, and the removal from the guide rail is effectively restricted. Therefore, the bed frame is always guided by the guide rails, making it extremely safe. In addition, the prevention of removal from the guide rail is achieved by automatically displacing the retainer in response to the misaligned guide rail, so the retainer has a simple structure that simply fits into the guide rail. This eliminates the need for a locking structure as in the past, making it easy to assemble and can be constructed at low cost.

[Brief explanation of the drawing]

The drawings show an embodiment of the safety device for an elevating bed according to the present invention, in which Fig. 1 is an overall perspective view with a part of the elevating bed cut away, and Fig. 2 A and B are front views of the main parts, respectively. Figure, main part side view, Figure 3 A, B
4 is an explanatory diagram of the operation of the main part, FIG. 4 is an explanatory diagram of the action of the second embodiment, and FIG. 5 is a cross-sectional view of the main part showing the conventional example. In the figure, 1 is a bed frame, 5 is a guide body, 6 is a guide rail, 10 is a retaining body, and 11 is a bullet.

Claims (1)

[Scope of utility model registration request] In an elevating bed in which a guide body protruding from a bed frame is fitted into a guide rail installed vertically in the room so as to be able to move up and down, the guide body has a retainer that can be displaced toward the bottom of the groove of the guide rail. 1. A safety device for an elevating bed, comprising: a body; and a bullet for biasing the retaining body in a direction to project from the guide body.