JP5099897B2 - Folding side rail - Google Patents

Description

  The present invention relates to a folding side rail for a bed or the like, in particular, a folding type having a structure in which a plurality of support members are rotatably connected so as to form a parallel link mechanism between an upper horizontal beam member and a lower horizontal beam member. It relates to side rails.

  Various types of bed side rails have been provided in the past, but among these, a plurality of support members can be rotated so as to form a parallel link mechanism between the upper and lower cross member. Folding side that connects and holds the above-mentioned column members in an upright posture and puts them in use, and lowers the plurality of column members in parallel to lower the upper horizontal beam members in parallel to store them when not in use Rails are widely used. In such a foldable side rail, it is desirable that the height of the upper crosspiece member be kept low in the retracted state when not in use.

As a conventional technique of such a foldable side rail, there are many things such as those described in Patent Document 1 and Patent Document 2, for example.
7 to 11 schematically show such a conventional foldable side rail. The foldable side rail includes a plurality of column members c between the upper horizontal beam member a and the lower horizontal beam member b. Are connected so as to be rotatable so as to constitute a parallel link mechanism, and a holding mechanism d for holding the column member c in an upright posture is provided. Here, as shown in FIG. 9, the plurality of column members c are basically configured such that the cross-sectional shape is square or circular, and the chamfered or partially curved portions thereof. The operation of such a foldable side rail is obvious from FIG. 7 showing the use state and FIG.

  By the way, when such a foldable side rail is used in a medical bed, the dimensions and the like of each part are being stipulated by a standard, for example, the IEC standard in order to be able to use it particularly safely.

  That is, in the IEC standard, for example, when the side rail has a closed space as in the case where the side rail is configured in a lattice shape, the dimension of the space, that is, the dimension A in the figure does not enter the user's head. Therefore, it is defined to be 120 mm or less. In addition, when there is a space portion opened by a gap, such as a gap between the end portion of the upper horizontal cross member a and the headboard, the dimension B of the gap prevents the user's neck from entering. Therefore, it is specified to be 60 mm or less, or 235 mm or more in order to prevent the head from being caught.

Here, in the side rail of FIG. 7, when the dimension A does not satisfy the above definition, as a method of changing the dimension A to satisfy the specification, as shown in FIG. 10, a support member per unit lateral width of the side rail is used. It is conceivable to increase the number of c. That is, in FIG. 10, the number of support members c as the entire side rail is doubled as compared with that in FIG.
Japanese Patent No. 2697765 Japanese Patent No. 3029026

However, as shown in FIG. 10, when the number of support members c per unit lateral width of the side rail is increased, the height C of the upper crosspiece member a in the retracted state becomes as shown in FIG. It becomes high compared with, and it becomes an obstacle at the time of storage.
The present invention was devised in view of the above points, that is, while satisfying the above-mentioned dimension A defined in the side rail, the height of the upper side rail member of the side rail during storage is increased. This is intended to prevent the occurrence of the problem.

In order to solve the above-described problem, in the present invention, a plurality of support members are rotatably connected to form a parallel link mechanism between the upper and lower cross member, and the support member is erected. In a foldable side rail provided with a holding mechanism for holding in a posture, a structure in which a fence member shifted in the thickness direction is connected in a rotatable manner in conjunction with the parallel link mechanism between a plurality of adjacent support members , The fence member is configured as a plate-like body, and its intermediate part in the height direction is shifted in the thickness direction by a support bar projecting from the intermediate part of the support member in the thickness direction of the side rail. A foldable side rail is proposed in which the lower side of the fence member is configured to be able to descend over the lower horizontal rail member by being connected and supported .

  Further, in the present invention, a holding mechanism is provided between the upper horizontal beam member and the lower horizontal beam member so that a plurality of column members are rotatably connected so as to constitute a parallel link mechanism, and the column members are held in a standing posture. In the foldable side rail, a foldable side rail is proposed in which a plurality of adjacent support members are alternately shifted in the thickness direction of the side rail.

  First, in the foldable side rails of claims 1 and 2, the dimensions defined in the side rails can be satisfied by the fence members connected between the support members without increasing the plurality of support members. Since the plurality of support members are shifted in the thickness direction of the side rail, the height of the upper crosspiece member in the retracted state is not increased.

  In the foldable side rail according to claim 3, by increasing the plurality of support members, the dimensions defined in the side rails can be satisfied, and the support members are alternately adjacent to each other in the thickness of the side rails. Since the plurality of shifted column members overlap each other at the respective positions because they are shifted in the vertical direction, the height of the upper horizontal beam member in the retracted state is not increased.

Next, embodiments of the folding side rail of the present invention will be described with reference to the accompanying drawings.
1 and 2 show a first embodiment of a folding side rail to which the present invention is applied.
In the figure, reference numeral 1u is an upper horizontal beam member, 1d is a lower horizontal beam member, and a plurality of column members 2, in this case, six column members 2 between the upper horizontal beam member 1u and the lower horizontal beam member 1d. Are coupled so as to be rotatable so as to constitute a parallel link mechanism.

  In FIG. 1, reference numeral 3 denotes a mounting bar protruding below the lower crosspiece member 1d. By fitting this mounting bar 3 into a fitting hole formed on the upper surface of the bed frame, a side rail is provided. Is attached to the side 4 of the bed (shown in FIGS. 3 and 4). Reference numeral 5 denotes a holding mechanism for holding the column member 2 in an upright state, that is, in a side rail use state. This holding mechanism 5 is a mechanism as described in, for example, Patent Document 1 and Patent Document 2 described above. It is.

  In this embodiment, support rods 6 project from the middle part of the column members 2 at the left and right end portions in the thickness direction of the side rails, and plate-like fences are provided on the leading ends of these support rods 6. The member 7 is connected. In this case, at least one side between the support bar 6 and the support member 2 or between the support bar 6 and the fence member 7 is configured to be rotatable. In the figure, the reference numeral 8 is configured to be rotatable. In addition, the fence member 7 can also be connected with respect to the other support | pillar member 2 so that rotation is possible.

  In the above configuration, when the column member 2 is rotated counterclockwise from the state shown in FIG. 1, the plurality of column members 2 can be put into the retracted state as shown in FIG. As shown in FIG. 2, the fence member 7 is moved down in conjunction with the parallel link mechanism, and the plurality of support members 2 are shifted in the thickness direction of the side rails. The height of the will not be raised.

  Therefore, in this embodiment, it is possible to satisfy the dimensions defined in the side rail by the fence member 7 connected between the column members 2 without increasing the plurality of column members 2, and in the retracted state as described above. The height of the upper crosspiece member 1u is not increased.

Next, FIGS. 3 and 4 show a second embodiment of a folding side rail to which the present invention is applied. In this embodiment, components corresponding to the components of the first embodiment are denoted by the same reference numerals. In the drawing, the holding mechanism is not shown.
In the figure, reference numeral 1u is an upper horizontal beam member, 1d is a lower horizontal beam member, and a plurality of column members 2, in this case, 15 column members 2 between the upper horizontal beam member 1u and the lower horizontal beam member 1d. Are coupled so as to be rotatable so as to constitute a parallel link mechanism.

  In this case, the plurality of adjacent support members are alternately shifted in the thickness direction of the side rails. In the figure, the support member on the near side is indicated by 2a, and the support member on the back side is indicated by 2b.

  In the above configuration, when the support members 2a and 2b are rotated and lowered from the state 3, the plurality of support members 2 can be put into a retracted state. In this case, since the plurality of adjacent support members 2a and 2b are alternately shifted in the thickness direction of the side rail, the plurality of shifted support members 2a and 2b are positioned at the respective positions. Since they overlap, the height of the upper crosspiece member 1u in the retracted state is not increased.

  Therefore, in the case of this embodiment, by increasing the plurality of support members 2a and 2b, it is possible to satisfy the dimensions defined in the side rail, and the support members 2a and 2b have a plurality of adjacent members. Since they are alternately shifted in the thickness direction of the side rails, the height of the upper crosspiece member 1u in the retracted state is not increased.

Next, FIGS. 5 and 6 show a third embodiment of a folding side rail to which the present invention is applied. In this embodiment, components corresponding to the components of the second embodiment are denoted by the same reference numerals. Also in this figure, the holding mechanism is not shown.
In this embodiment, the shape of the column member 2a corresponding to the column member 2a on the near side in FIG. 4 is curved to the front side in the drawing, and the operation thereof is the same as that of the second embodiment. Since it is the same, the overlapping description is omitted.

  Since the foldable side rail of the present invention is as described above, the height of the upper side rail member of the side rail during storage is prevented from increasing while satisfying the dimensions defined in the side rail. Can be ideal as a side rail for medical beds and stretchers.

  Of course, the folding side rail of the present invention can be used not only for medical beds but also for home care beds and general beds.

It is a perspective view which shows 1st Embodiment of the foldable side rail of this invention in a use condition. It is a front view which shows 1st Embodiment of the foldable side rail of this invention in a retracted state, and the fence member is shown with the dashed-two dotted line. It is a perspective view which shows 2nd Embodiment of the foldable side rail of this invention in a use condition. It is a side view which shows 2nd Embodiment of the foldable side rail of this invention in a use condition. It is a perspective view which shows 3rd Embodiment of the foldable side rail of this invention in a use condition. It is a perspective view which shows 3rd Embodiment of the foldable side rail of this invention in a retracted state. It is a front view which shows an example of the conventional foldable side rail in a use condition. It is a front view which shows an example of the conventional foldable side rail in a retracted state. It is explanatory drawing which shortens and shows the corresponding part of the YY sectional view of FIG. 7 for convenience. It is a front view of the use condition which shows the state which increased the support | pillar member of the conventional folding type side rail. It is a front view of the storage state which shows the state which increased the support | pillar member of the conventional folding type side rail.

Explanation of symbols

1u Upper horizontal beam member 1d Lower horizontal beam member 2, 2a, 2b Posting member 3 Mounting rod 4 Bed side 5 Holding mechanism

Claims (2)

A foldable side rail provided with a holding mechanism for pivotally connecting a plurality of support members to form a parallel link mechanism between the upper and lower cross members and holding the support members in a standing posture. And a structure in which a fence member shifted in the thickness direction is connected between a plurality of adjacent support members in a rotatable manner in conjunction with the parallel link mechanism, and the fence member is configured as a plate-like body, By supporting the intermediate portion in the height direction so as to be rotatable and shifted in the thickness direction by a support bar projecting from the intermediate portion of the support member in the thickness direction of the side rail, A foldable side rail characterized in that the lower side of the lower side cross member is configured to be lowered . A foldable side rail provided with a holding mechanism for pivotally connecting a plurality of support members to form a parallel link mechanism between the upper and lower cross members and holding the support members in a standing posture. The folding side rail is characterized in that a plurality of adjacent support members are alternately shifted in the thickness direction of the side rail.

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