JPH11104187A - Standing position keeping mechanism of folding side guard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To install a restraint means in a standing position keeping means for a side guard of a bed so that the folding side guard will not be folded unexpectedly. SOLUTION: When the side guard is in the standing position, a protruding part 26c of a double stopper lever 26 and a protruding part 25c of a stopper lever 25 are in contact, and the stopper lever 25 is in the lock position. When the side guard is folded, the contact condition between the protruding part 26c of the double stopper lever 26 and the protruding part 25c of the stopper lever 25 is released by moving the double stopper lever 26 toward a side frame 22 against the energizing force of a leaf spring 35.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding side fence provided with restraining means for holding it in a standing state so that the folding side fence is not inadvertently folded. It concerns the mechanism.

[0002]

2. Description of the Related Art At present, among side fences provided on a bed or the like, as shown in FIG. 4, a foldable side fence 1 is composed of a plurality of columns 2 provided so as to be foldable and a horizontal frame provided at the tip of these columns. 3 and a standing holding mechanism 4 between the column 2 and the horizontal frame 3 located at the end of the horizontal frame 3 to set the column 2 in a standing state and release the standing state.
The applicant has already filed an application for a side fence having such a structure, and has actually been commercialized. As shown in FIG. 5, the upright holding mechanism 4 includes a receiving member 5 attached to the top of the column 2, a cover member 6 provided on the side of the horizontal frame 3, and a cover member 6 inside the cover member 6. A stopper lever 8 is provided so as to be urged toward the receiving member 5 via a spring member 7. The receiving member 5 has a fitting hole 10 for receiving the pin member 9.

According to this structure, when unnecessary, the stopper lever 8 of the upright holding mechanism 4 is gripped against the resilience of the spring member 7 so that the pin member 9 is inserted through the fitting hole 10 in the receiving member 5. , The column 2 is folded by performing a release operation, the column 2 is raised when necessary, and is held in a standing position by the standing position holding mechanism 4, and is usually a side frame (not shown). The side fence can be raised and folded as needed, so there is no need to attach and remove the side fence one by one, saving time and preventing patients from getting on and off and preventing medical treatment. It is not easy to handle.

[0004]

However, since the side fence 1 has a simple operation of releasing the upright holding mechanism 4,
If the release operation is inadvertently performed in the upright position, the support is lost, and the support 2 immediately falls down into the side frame, and there is a risk that an object or a hand may be caught between the supports 2, which is dangerous. In other words, it can be said that the side fence has a structure that is easily manipulated for mischief. The present invention has been made to solve such a problem, and in the folding side fence, a restraining means is provided in a means for holding in an upright position so as not to be inadvertently folded, It is an object of the present invention to provide a standing holding mechanism in a folding side fence.

[0005]

In order to solve the above-mentioned problems, the present invention provides a foldable side fence mounted on a side frame such as a bed, wherein a plurality of columns are provided on the side frame so as to be foldable, A horizontal frame is pivotally mounted on the tops of these columns, and the column located at the end of the horizontal frame and the horizontal frame are restrained / unrestricted, thereby holding the column in the upright position or folding the column. A support member attached to the top of the support, a cover member provided on the horizontal frame side, and a fitting hole provided in the support member. And a stopper lever attached to the cover member.
A double stopper lever for locking the operation of the stopper lever is movably provided, and the stopper lever includes:
A pin member for fitting into the fitting hole of the receiving member is provided so as to be able to resiliently protrude and retract, and the double stopper lever is in contact with the cover member and always locks the operation of the stopper lever by contacting the stopper lever. To release the contact between the double stopper lever and the stopper lever and release the restraint between the support and the horizontal frame by the stopper lever by moving the double stopper lever against the biasing force. It is possible to fold a plurality of struts in order to perform the operation. In the above-described configuration, the cover member has a guide portion that movably supports the stopper lever so that the pin member is directed to the fitting hole in the receiving member,
A double stopper lever is held on the cover member so as to be movable in the axial direction of the horizontal frame, and is always urged in a direction away from the horizontal frame. Is provided at least on the stopper lever side so as to abut, and by moving the double stopper lever toward the horizontal frame against the urging force, the contact state between the double stopper lever and the stopper lever is released. By moving the stopper lever along the guide portion to release the constraint between the column and the horizontal frame, the plurality of columns can be folded. Further, an inclined portion is formed on the distal end side of the receiving member so as to be inclined downward toward the distal end side, and the support member is raised by holding the horizontal frame to raise the support so that the distal end of the pin member contacts the inclined portion of the receiving member. The side fence can be held in an upright state by fitting the tip of the pin member into the fitting hole while pressing the pin member against the urging force in contact with the pin member.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a folding side fence according to the present invention. FIG.
2 shows the standing position holding mechanism 20 in the foldable side fence mounted on the side frame (not shown) of the bed. The foldable side fence is not shown in its entirety, but a plurality of pillars 21 are provided on a base frame attached to a mounting hole (not shown) in a side frame of the bed so as to be foldable, and at the top of these pillars 21. Axle the horizontal frame 22,
The column 21 located at the end of the horizontal frame 22 and the horizontal frame 22
The upright holding mechanism 20 is provided therebetween to hold the upright 21 in the upright state or to put the upright 21 in the folded state.

The upright holding mechanism 20 includes a receiving member 23 attached to the top of the support column 21, a cover member 24 provided on the side of the horizontal frame 22, and the receiving member inside the cover member 24. Fitting hole provided in 23 (described later)
And a stopper lever 25 attached so as to be locked to the lock lever. At the top of the cover member 24, a double stopper lever 26 for locking the operation of the stopper lever 25, which will be described later, is provided slidably along the elongated hole L.

As shown in FIG. 2, the receiving member 23 has an integral structure which is mounted so as to surround the column 21 and is screwed and fixed in the vicinity of the top of the column 21, and a guide portion of the cover member 24. A stopper lever 25 to be described later is provided on a receiving surface 23a provided to face the
A fitting hole 27 for receiving a pin member protruding from the tip is formed. An inclined portion 23b is formed on the distal end side of the receiving surface 23a of the receiving member 23 so as to be inclined downward toward the distal end side. The support 21 is raised and the pin member at the end of the stopper lever 25 is received in the fitting hole 27 of the receiving member 23.
When locking the pin member, the inclined portion 23b is used as a guide surface so that the pin member can be easily guided to the fitting hole 27 in the receiving surface 23a.

The cover member 24 is composed of a two-part outer frame body which is configured to sandwich the end of the horizontal frame 22 and the stopper lever 25 from both sides. Also, the cover member 24
Has a guide portion 28 of the stopper lever 25 so as to face the receiving surface 23a of the receiving member 23.

The stopper lever 25 is provided on the cover member 2.
Lifting section 25a that moves up and down along the guide section 28 in FIG.
And a grip portion 25b exposed from the cover member 24 so that a gripping operation is possible. And the elevating unit 25
a, a cylindrical hole 29 is formed in the receiving member 23 toward a front end surface facing the receiving surface 23a.
A pin member 30 for fitting into the fitting hole 27 of the receiving member 23 is resiliently accommodated in the housing 9 together with the spring member 31. Further, the stopper lever 25 is provided within the cover member 24 with a double stopper lever 26 described later.
Is provided with a protruding portion 25c that comes into contact with the projection.

The double stopper lever 26 located at the top of the cover member 24 is formed by an operating portion 26a exposed from an elongated hole L at the top of the cover member 24 and ribs 32 and 33 inside the cover member 24. Moving part 26 movably held in the sliding groove 34 in the axial direction of the horizontal frame 22
b. A leaf spring 35 is inserted between the moving portion 26b and the sliding groove 34 near the horizontal frame 22, and constantly biases the double stopper lever 26 in a direction away from the horizontal frame 22. In this state, a projection 26c that comes into contact with the projection 25c of the stopper lever 25 protrudes from the moving portion 26b. In other words, the projection 25c of the stopper lever 25 and the projection 26c of the double stopper lever 26 make the double stopper lever 26 resist the urging force of the leaf spring 35, and
By moving it toward the second position, the projecting portion 26c of the double stopper lever 26 is displaced from the projecting portion 25c of the stopper lever 25 to release from the contact state.

In the upright holding mechanism of the folding side fence configured as described above, when the side fence is in the upright state, as shown in FIG. 23 is in contact with the receiving surface 23a of the stopper member 25.
Meanwhile, the pin member 30 is in a fitted state via the spring member 31. At this time, the projection 26c of the double stopper lever 26 and the stopper lever 2
5, the stopper 25 is in a contact state, and the stopper lever 25 is in a locked state. Therefore, the lock cannot be released by grasping the grip 25b of the stopper lever 25, and the side fence is in the standing state. Can be kept. Therefore,
The side fence is not inadvertently folded.

Next, when folding the side fence, first, the lock of the stopper lever 25 is released. That is, by moving the double stopper lever 26 toward the horizontal frame 22 against the urging force of the leaf spring 35, the contact between the projection 26 c of the double stopper lever 26 and the projection 25 c of the stopper lever 25 is changed. To release. Then
While maintaining the state where the double stopper lever 26 is pressed toward the horizontal frame 22 against the urging force of the leaf spring 35,
By grasping the grip portion 25b of the stopper lever 25 and raising the stopper lever 25, the elevating portion 25a is raised along the guide portion 28 of the cover member 24, and the pin member 30 is fitted in the receiving member 23 together with the elevating portion 25a. It can be removed from the hole 27 (see FIG. 3). As a result, the restrained state between the horizontal frame 22 and the support 21 is released, the support 21 can be lowered, and the state can be folded on the side frame. When the hand is released from the stopper lever 25 and the double stopper lever 26 in the folded state, the stopper lever 25 descends again along the guide portion 28 of the cover member 24 by its own weight, and the double stopper lever 26 35 returns along the sliding groove 34 in a direction away from the horizontal frame 22. Then, the projection 26c of the double stopper lever 26 and the projection 25c of the stopper lever 25 come into contact with each other.
It is locked.

When the side fence is in the standing state, the plurality of columns 21 are raised with the horizontal frame 22. Then, the tip of the pin member 30 contacts the inclined portion 23b of the receiving surface 23a of the receiving member 23, and the pin member 30 is pushed in against the urging force of the spring member 31, and the inclined portion 23b is used as a guide surface. The pin member 30 is provided in the fitting hole 27 in the receiving surface 23a, and can be fitted in the fitting hole 27 to hold the side fence in an upright state.

[0015]

As described above, according to the present invention, when the side fence is in the upright state, the upright holding mechanism cannot be released by the action of the restraining means. The fence is not folded, and it can be said that it is a preferable mechanism for safety.

[0016]

[Brief description of the drawings]

FIG. 1 is an external perspective explanatory view showing an example of a standing holding mechanism in a foldable side fence according to the present invention.

FIG. 2 is an explanatory sectional view of the upright holding mechanism shown in FIG. 1;

FIG. 3 is a cross-sectional view for explaining the operation of the standing position holding mechanism shown in FIG. 1;

FIG. 4 is an overall side view showing an example of a current foldable side fence.

5 is an enlarged sectional explanatory view of a main part of the side fence standing holding mechanism shown in FIG. 4;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 20 Standing holding mechanism 21 Prop 22 Horizontal frame 23 Receiving member 23a Receiving surface 23b Inclined part 24 Cover member 25 Stopper lever 25a Elevating part 25b Grip part 25c, 26c Projection part 26 Double stopper lever 26a Operation part 26b Moving part 27 Fitting hole 28 Guide part 29 Cylindrical hole 30 Pin member 31 Spring member 32, 33 Rib 34 Sliding groove 35 Leaf spring

Claims (3)

[Claims] 1. A foldable side fence to be mounted on a side frame such as a bed, wherein a plurality of columns are provided on the side frame so as to be foldable, and a horizontal frame is pivotally mounted on the top of the column, and an end of the horizontal frame is provided. A support member in a standing position or a support member in a folded state by restraining / releasing a support member located in a portion and the horizontal frame, wherein a top portion of the support member is provided. A cover member provided on the side of the horizontal frame, and a stopper lever mounted to be engaged with a fitting hole provided in the receiving member. A double stopper lever for locking the operation of the stopper lever is movably provided, and the stopper lever is provided with a pin member for fitting into a fitting hole in the receiving member.
The double stopper lever is provided so as to be capable of resiliently protruding and retracting, and urges the cover member to come into contact with the stopper lever so as to always lock the operation of the stopper lever. And move it,
A foldable side fence characterized in that the contact between the double stopper lever and the stopper lever is released, and the operation of releasing the constraint between the column and the horizontal frame by the stopper lever is enabled, so that a plurality of columns are folded. In the standing position mechanism. 2. The cover member has a guide portion for movably supporting a stopper lever so that the pin member is directed to a fitting hole in the receiving member.
A double stopper lever is held on the member so as to be movable in the axial direction of the horizontal frame, and is always urged in a direction away from the horizontal frame, so that the stopper lever and the double stopper lever come into contact in the cover member. Thus, by providing a projection at least on the stopper lever side and moving the double stopper lever toward the horizontal frame against the urging force, the contact state between the double stopper lever and the stopper lever is released, and the stopper lever is released. Move along the guide part to release the constraint between the support and the horizontal frame,
The standing support mechanism in the foldable side fence according to claim 1, wherein a plurality of columns are folded. 3. The receiving member has an inclined portion which is formed to be inclined downward toward the distal end, the inclined portion is formed, and the supporting member is lifted up by holding the horizontal frame, thereby raising the tip of the pin member at the receiving member. The side fence is held in an upright state by fitting the tip of the pin member into the fitting hole while pushing the pin member against the urging force by contacting the portion. An upright holding mechanism for the foldable side fence according to claim 1 or 2.