JP2006296611A - Side rail - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a side rail constituted to allow a user to leave a bed from a side and capable of positioning a grip part in a position easy to grip when the user stands up frontward in the side rail used in a bed changeable of its attitude like a chair. <P>SOLUTION: This side rail used for the bed changeable of its attitude into a bed-floor flat state and a chair state can be set at least into a storage state being flush with the floor part and an erected state for preventing the falling from the bed, and is so constituted that, when it is in the erected state, at least the grip part which the user grips in standing from the bed is formed narrower than the side rail attachment width. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a side rail used by being attached to a side portion of a bed.

Conventionally, as a nursing bed, the floor portion is divided into three parts, each of which is configured to be able to undulate, and is generally capable of being treated in various positions.
However, with this type of bed, you need to change your body orientation when you leave the bed and get up from the side of the bed, which is not always comfortable for those who have difficulty changing their orientation. It was a thing.

Therefore, a bed has been proposed that can change its posture from a supine state to a seated state on a chair. (See Patent Document 1)
With this bed, it is only necessary to stand up from the state (sitting state) without changing the direction on the bed, and it is very comfortable.

  This type of bed is generally used with a side rail inserted into the bed frame. However, the conventional side rail is configured to be positioned on the side frame of the bed, and when using such a side rail, it is necessary to stand up with a gripping portion that is substantially the same width as the bed width. It is difficult to use force, which is not preferable for use. (See Patent Document 2)

JP 2004-298372 A JP 2000-166703 A

  The problem to be solved is a side rail used in a bed whose chair can be changed in posture, and it is configured to be able to get off from the side, and the gripping portion is positioned so as to be easily gripped even when standing up forward. It is to provide a siderail that can be positioned.

The invention according to claim 1 is a side rail used for a bed whose posture can be changed between a flat state and a chair-like state. And a standing state that prevents falling from the bed, etc., and at least the part that the user grips when standing up from the bed is narrower than the side rail mounting width in the standing state. Is the most important feature.
The invention according to claim 2 is characterized in that the two lock mechanisms are operated when the side rail is operated from the standing state to the retracted state.
The invention according to claim 3 is characterized in that the two lock mechanisms are configured to be releasable by operating one lever.

The side rail of the present invention is in a state of being substantially flush with the floor surface of the bed when in the retracted state. Therefore, it is possible to get out of the bed. Also, when this side rail is erected, it has the same effect of preventing falling as the conventional side rail, and at least when it rises forward, the distance between the left and right side rails is narrower than the side rail mounting width. Therefore, it is easy to apply force and functions effectively at the time of start-up.
When the side rail is operated from the standing state to the retracted state, the invention according to claim 2 constitutes two lock mechanisms for unlocking the standing state and releasing the lock preventing the pinching between the side rail and the bed. Can be used more safely.
The invention according to claim 3 is configured such that the two locking mechanisms can be released by one lever, so that there is no troublesome operation. In addition, there is an effect of preventing erroneous operation.

  In the side rail used for the bed whose posture can be changed between a flat state and a chair-like state of the bed, the side rail is at least in the same plane as the floor portion, in a retracted state, dropped from the bed, etc. It is configured so that it can be set to an upright state that prevents the occurrence of an accident, and at least when the user stands up from the bed in the upright state, it is configured to be narrower than the side rail mounting width. When the side rail is operated from the standing state to the retracted state, the two locking mechanisms can be released with one lever.

  An embodiment of a side rail according to the present invention will be described with reference to the drawings. In addition, this side rail uses what was comprised symmetrically as a set. Therefore, in the following description, only one side will be described.

  The side rail 1 mainly includes an attachment portion 2, a pair of link arms 3 and 4, and a handrail portion 5.

First, the attachment part 2 will be described. The mounting portion 2 includes a base plate 6. The base plate 6 is bent in an approximately L shape when viewed from the front, and on the lower surface side, a support shaft inserted into a side rail mounting hole H provided in the side frame _Bf of the bed B. 7 and 7 are fixed. Brackets 8 and 8 serving as attachment portions for the link arms 3 and 4 are fixed to the upper surface of the base plate 6. The rear bracket 8 is fixed along the longitudinal direction of the base plate 6, and the front bracket 8 is fixed in an inclined state so that the front side faces inward. In addition, the receiving members 9 and 9 of the handrail portion 5 are fixed to the front side of the brackets 8 and 8 to constitute the attachment portion 2.

  Next, the pair of link arms 3 and 4 will be described. The front and rear link arms 3 and 4 have bearings 3b, 3b, 4b, and 4b fixed to both ends of the link pipes 3a and 4a, respectively. The rear link arm 3 is configured to take an arcuate locus in the same plane when one of the bearings 3b is a rotating shaft. Further, the front side link arm 4 is configured to take a locus along a conical curved surface when one bearing 4b is used as a rotating shaft. More specifically, the link arm 4 on the front side is arranged in such a manner that the shaft center lines of the bearings 4b and 4b are parallel to each other and the line connecting the center points of the bearings 4b and 4b is not orthogonal to the shaft center line. The link pipe 4a is fixed so as to connect the bearings 4b and 4b.

  And the handrail part 5 is demonstrated. The handrail portion 5 has a main member 10 serving as a grip portion. Brackets 11 and 12 are pivotally attached to the lower surface side of the main member 10 so as to be swingable. More specifically, the brackets 11 and 12 include bracket plates 11a and 12a that are substantially U-shaped when viewed from the front and open downward. The rotary shafts 11b and 12b are fixed to the upper surfaces of the bracket plates 11a and 12a, respectively. In addition, the internal thread parts 11c and 12c are provided from the upper side of the rotating shafts 11b and 12b. The rotating shafts 11c and 12c are inserted into stepped bearings 13 and 13 fixed to the main member 10, respectively, and the brackets 11 and 12 are attached so as to be swingable with screws 14 from above. .

  The mounting part 2 and the link arms 3 and 4 configured as described above attach one bearing 3b and 4b to the bracket 8 and 8 of the mounting part 2, respectively, and attach the other bearing 3b and 4b to the bracket of the handrail part 5. 11 and 12 are attached to the side rail 1.

The side rail 1 configured in this manner is used by being inserted into a mounting hole H provided in the side frame _Bf of the bed B as shown in FIGS. Although not shown in the drawing, a hole is formed in the lower end portion of the support shaft so that a retaining pin is inserted.
The side rail 1 has a height that does not protrude from the upper surface of the mattress M of the bed B as shown in FIG. Therefore, the direction of the body can be changed on the mattress M so as to use the normal bed B, and the user can get off the side of the bed B.

Then, when the handrail portion 5 is moved so as to be lifted to the upper front from this state, the rear link arm 3 moves along an arcuate locus in the same plane. Further, the front link arm 4 moves in a locus along a conical curved surface having the lower bearing 4b as a vertex. Therefore, in the retracted state, the handrail portion 5 that has been substantially parallel to the attachment portion 2 gradually approaches the front side of the handrail portion 5 toward the inside of the bed B by the operation of the front and rear link arms 3 and 4. It has become a movement. At this time, the upper bearings 3b, 4b of the front and rear link arms 3, 4 operate so as to slightly twist the brackets 11, 12. For this purpose, the upper brackets 11 and 12 are swingably attached to the main member 10 as described above. In this embodiment, the brackets 11 and 12 on the handrail portion 5 side are configured to be swingable. However, the brackets 8 and 8 on the attachment portion side may be configured to be swingable. No problem.
Thus, when the handrail part 5 is operated and the side rail 1 is set up in an upright state, the front side of the handrail part 5 of the side rail 1 approaches the inside as shown in FIG. It is roughly C-shaped. In this state, the gripping part is located closer to the user of the bed B. Therefore, more force is applied compared to standing up with the gripping part of the side rail located far away like the conventional side rail. It has the effect of being able to stand up easily and easily.

Next, what provided the lock mechanisms 15 and 16 in order to use the side rail 1 of Example 1 more safely is demonstrated.
The lock mechanisms 15 and 16 include the lock mechanism 15 for holding the side rail 1 in the standing state, the bed frame _Bf and the link arms 3 and 4 when the handrail portion 5 is stored. And a locking mechanism 16 for preventing a finger or the like from being caught.

First, the lock mechanism 15 that holds the standing state will be described.
In this lock mechanism 15, the pin 17 provided on the handrail portion 5 side is automatically inserted into the hole portion 4 d provided in the bearing 4 c on the upper side of the front link arm 4, and this state is maintained. More specifically, a cylindrical member 18 is fixed to the front bracket 12 of the handrail portion 5. The tubular member 18 is closed at the rear, and the spring 19 and the pin 17 are inserted from the front side. A long hole 18 a is provided in the front-rear direction on the outer peripheral portion of the cylindrical member 18, and a screw member 20 is screwed to the pin 17 from the long hole 18 a. The screw member 20 is configured to prevent the pin 17 from coming off, and the pin 17 is operated within a range in which the screw member 20 moves in the elongated hole 18a. The spring 19 urges the pin 17 to push forward, and the pin 17 is pulled into the cylindrical member 18 when the screw member 20 is pulled rearward along the elongated hole 18a. .
Next, a flange 4e is integrally formed with the bearing 4c on the upper side of the front link arm 4. The flange 4e has a hole 4d through which the pin 17 can be inserted. The flange 4e may be contoured so as to contact the bracket 12 with the pin 17 inserted through the hole 4d. By doing so, it is possible to prevent an excessive load from being applied to the pin 17.

  Next, the lever 21 attached so that the pin 17 can be removed from the hole 4d and the lock can be easily released will be described. The lever 21 has a U-shape that bypasses the main member 10 and is screwed to mounting plates 22 and 22 fixed to the lower surface of the main member 10. A screw member 23 is attached to the lower front portion of the lever 21.

In the lock mechanism 15 configured as described above, when the handrail portion 5 is retracted from the retracted state, the pin 17 is automatically inserted into the hole portion 4d provided in the flange portion 4e of the bearing 4c. Hold.
Conversely, when retracting, when the lever 21 is pulled up, the screw member 23 at the lower end moves the screw member 20 on the pin 17 side rearward, and the pin 17 comes out of the hole 4d. If it will be in this state, since the handrail part 5 can be rotated back, it should just rotate and store back.

Next, the lock mechanism 16 provided so that a finger or the like is not pinched by the bed frame _Bf or the like when the handrail portion 5 is stored will be described.
The lock mechanism 16 is provided so as to be juxtaposed with the lock mechanism 15 described above.
First, mounting plates 24, 24 are fixed to the lower surface of the main member 10, and a support plate 25 is fixed to the mounting plates 24, 24 in a rotatable state. An operation plate 26 is fixed to the support plate 25 and the screw member 23 attached to the lever 21.

The operation of the lock mechanisms 15 and 16 configured as described above will be described.
First, the handrail part 5 in the retracted state is pulled forward. At this time, the upper bearing 4 c of the front link arm 4 rotates relative to the bracket 12 of the handrail portion 5. And the pin 17 is moving toward the hole part 4d relatively along the outline of the collar part 4e, and when the handrail part 5 is in the standing state, the pin 17 biased by the spring 19 is the hole part. 4d is inserted. In this state, the rotation of the link arm 4 is restrained with respect to the bracket 12 so that it can be used safely. (See Fig. 6 (a))
Next, to store the handrail portion 5 in the standing state, the screw member 23 moves the screw member 20 backward by pulling the lever 21 upward, and the pin 17 is extracted from the hole portion 4d. In this state, the restraint between the bracket 12 and the link arm 4 is released, and the state becomes rotatable. When the lever 21 is pulled up, the operation plate 26 is pushed backward, and the support plate 25 rotates downward. When the handrail portion 5 is lowered in this state, the support plate comes into contact with the base plate 6. At this time, an appropriate interval is formed between the front and rear link arms, the base plate, the handrail portion, the side frame of the bed, and the like so that fingers and the like are not caught. (See Fig. 6 (b))
Finally, in order to store the handrail portion 5, the lever 21 may be rotated backward to be in a state along the upper surface of the handrail portion. When the lever 21 is rotated backward, the operation plate 26 is pulled forward, and the support plate 25 is rotated upward.

Thus, since the lock mechanism 15 in the standing state and the lock mechanism 16 for preventing the fingers from being caught are provided, it can be used safely.
Further, since these lock mechanisms 15 and 16 are configured to be unlocked by a single lever operation, there is no troublesome operation.

Overall perspective view showing the side rail body (a) Storage state (b) Standing state Plan view showing mounting part and link arm (A) Bottom view (b) Side cross-sectional view Bottom view of the main part showing the lock mechanism Cross-sectional side view of the main part showing the locking mechanism Lock mechanism explanatory drawing (a) Standing state (b) Clamping prevention state (c) Storage state Explanatory diagram of usage (storage state) (a) Top view (b) Side view Explanatory diagram of use condition (standing position) (a) Top view (b) Side view

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Side rail 2 Attachment part 3 Link arm 4 Link arm 5 Handrail part 15 Lock mechanism 16 Lock mechanism B Bed B _f Side frame H Side rail attachment hole

Claims (3)

  In the side rail used for the bed whose posture can be changed between a flat state and a chair-like state of the bed, the side rail is at least in the same plane as the floor portion, in a retracted state, dropped from the bed, etc. It is configured to be able to be set in a standing state that prevents the movement, and at least when the user stands up from the bed when in the standing state, the portion to be gripped is narrower than the side rail mounting width. side rail.   When operating the side rail from the standing state to the retracted state, the lock mechanism that holds the standing state and the lock mechanism that prevents the fingers from being caught are configured to be released. The side rail according to claim 1.   The side rail according to claim 2, wherein the two lock mechanisms according to claim 2 are configured to be releasable by operating one lever.

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