JP2606634Y2 - Locking mechanism for folding side fence - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking mechanism for a foldable side fence provided in a patient bed used in a hospital or home.

[0002]

2. Description of the Related Art Side fences provided on such a bed are provided for the purpose of preventing a patient lying down on the bed and falling down from the bed or dropping of bedding.
In the case of a foldable type, when a patient gets off a bed or the like, the foldable type is provided so as not to be obstructed by being folded in a lying state. A typical example of this type of foldable side fence is disclosed in Japanese Utility Model Publication No. 2-16688.

The conventional side fence is provided on a side frame 101 of a bed, for example, as shown in FIG.
The side fence 100 includes horizontal members 102 and 103 which are vertically parallel.
A plurality of mounting members 104 are respectively provided at predetermined intervals on inner surfaces of the upper and lower horizontal members 102 and 103 facing each other, and upper and lower ends of these mounting members 104 are pivotally mounted on a support shaft 105. The plurality of vertical rods 106 are provided in parallel. As shown in FIG. 10, the mounting member 104 pivotally connecting the end of the vertical rod 106 is formed to have a horizontal surface and one side open. Upper and lower horizontal members 1
02, 103
Are provided with their open side surfaces facing in opposite directions, and can be turned only in one direction as shown to be able to fall. The side fence 100 can be held upright by a lock mechanism 110 provided between the vertical bar 106a located at the end thereof and the upper horizontal member 102.

The lock mechanism 110 is, for example,
No. 89053. In the lock mechanism 110, as shown in FIG. 11, an upward fitting hole 112 is provided in a receiving member 111 attached to the vertical rod 106a located at an end of the side fence 100.
The shaft 105 is attached to an end of the upper horizontal member 102.
Cover member 1 which also serves as a mounting member by axially attaching the vertical rod 106
A downwardly projecting portion 116 of a movable lever fitting member 115 movably provided in the vertical direction is attached to a substantially U-shaped leaf spring 11.
4 so as to resiliently fit into the fitting hole 112 of the receiving member 111 from a substantially vertical direction.

The downwardly projecting portion 116 of the movable lever fitting member 115 of the lock mechanism 110 is
When fitted in the upward fitting hole 112, the rotation of the vertical rod 106a is prevented, and the side fence 100 is held in the upright state as shown by the solid line in FIG. When the movable lever fitting member 115 is gripped from this state, the downward projection 11
6 is released from the fitting hole 112 of the receiving member 111, and the vertical rod 106a becomes rotatable.
Can be folded in a lying state as shown by imaginary lines in FIG.

However, in the case of the lock mechanism 110 in the conventional foldable side fence 100 as described above, the lock mechanism 110 is locked by fitting the downward projecting portion 116 and the receiving hole 111 of the receiving member 111 in a substantially vertical direction. By simply putting a hand on the movable lever fitting member 115, the downward projection 11
6 does not completely come off from the fitting hole 112,
a may rotate, the lock may be released, and the side fence 100 may fall. Therefore, for example, the above-mentioned Tokuhei 2-1
As disclosed in Japanese Patent No. 6688, there is a type in which a double locking mechanism is provided. However, such a double locking mechanism not only complicates the structure but also folds the normal side fence. Operation becomes troublesome.

In view of the above, the present invention provides a foldable side fence lock mechanism provided on a bed or the like, which has a simple structure and a simple folding operation, and can be locked and unlocked safely and securely. It is intended to provide a locking mechanism for the side fence.

[0008]

According to the lock mechanism of the folding side fence according to the present invention, a plurality of vertical bars are provided on the side frame of the bed so as to be able to move up and down, and an upper horizontal bar is pivoted at the upper end of the vertical bar. In a foldable side fence that can be worn and foldable, the upper end of the vertical rod is formed into a substantially L-shape, and the bent end portion is pivotally attached to the upper horizontal rod, and is attached to the end of the side fence. A substantially horizontal fitting hole is provided in a side surface of the bent upper end of the located vertical rod in a direction opposite to a bending direction of the bent upper end, and one end is turned to a side end of the upper horizontal rod. The distal end of a rotating arm rotatably connected to the other end of the movably provided lever is connected to a fitting member movably provided in a substantially horizontal direction within the upper horizontal rod, and the tip of the fitting member The spring provided at the end of the side fence is resiliently fitted into the substantially horizontal fitting hole provided at the bent upper end of the vertical rod located at the end of the side fence by a spring. To achieve the above object by.

[0009]

According to the foldable side fence lock mechanism according to the present invention, the lever of the lock mechanism provided at the end of the upper horizontal bar is gripped to position the protrusion on the fitting member and the end of the side fence. By disengaging the fitting from the fitting hole provided in the vertical fence, the vertical fence becomes rotatable, the side fence can be folded, and when the side fence is raised, a lock mechanism is provided. The protrusion provided on the fitting member is resiliently fitted from a substantially horizontal direction into the fitting hole of the vertical rod located at the end of the side fence by a spring, thereby preventing rotation of the vertical rod. Hold the side fence upright.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to the embodiments shown in the drawings.

FIG. 1 shows an example of a bed 2 to which a foldable side fence 1 having a lock mechanism 14 according to the present invention is attached. The bed 2 is provided with a headboard 4 and a footboard 5 which also serve as legs before and after a side frame 3 constituting a floor support member. The headboard 4 and the footboard 5 are provided with casters 6. A floor plate (not shown) is provided on the side frame 3 as the floor support member, and a mattress 7 is placed on the floor plate. And the side frame 3
A foldable side fence 1 is provided above.

In the folding side fence 1, a plurality of vertical rods 13 are provided on a lower horizontal rod 12 provided on a side frame 3 of a bed 2 at predetermined intervals so as to be able to move up and down. The upper horizontal rod 11 is pivotally mounted on the upper horizontal rod 11 and is provided so as to be freely foldable as shown by the imaginary line in the figure from a vertically upright state. It can be held in an upright state by a lock mechanism 14 provided therebetween. And this side fence 1 is the lower horizontal rod 1
The mounting shaft 15 protruding from the lower surface of the bed 2 is removably mounted by fitting into a mounting hole (not shown) provided in the side frame 3 of the bed 2 as appropriate.

As shown in FIG. 3, a vertical bar 13 provided on the lower horizontal bar 12 of the side fence 1 so as to be able to move up and down is supported on a lower end of the vertical bar 13 by a mounting member 16 fixed on the lower horizontal bar 12. It is rotatably mounted on a shaft 17. The upper surface and one side surface of the mounting member 16 are open, and the vertical rod 13 is mounted so as to be able to fall only on one side from a vertically upright state. On the other hand, the upper end of the vertical rod 13 is bent into a substantially L shape, and the bent end 13a is rotated with respect to the upper horizontal rod 11 by the support shaft 18 in a state inserted into the upper horizontal rod 11. It is freely pivoted. The upper end of the vertical rod 13 is, for example, as shown in FIG.
As shown in FIG. 5, an end member 13a formed into a substantially L-shape with a polyamide resin or the like is fitted to an upper end of a rod 13b made of an aluminum square pipe or the like. The upper horizontal rod 11 is formed by covering a frame 20 made in a substantially U-shape by extrusion molding of aluminum or the like with a cover 21 made of synthetic resin except for its lower surface.
A decorative sheet 2 made by applying a grain pattern or the like to the surface of the cover 21 by extrusion molding of a vinyl chloride resin or the like.
2 is appropriately attached. The end member 13a provided at the upper end of the vertical rod 13 is attached to the upper end of the rod 13b in a state where the end member 13a is bent in a direction opposite to the falling direction of the vertical rod 13. From the opening 23 formed on the lower surface of the frame 20 of the upper horizontal
0 is rotatably mounted on the support shaft 18 by being inserted between the left and right vertical sides 20a, 20a. The opening 23 on the lower surface of the frame 20 is large enough to allow the end member 13a of the vertical rod 13 to rotate about the support shaft 18 and when the vertical rod 13 is raised upright. End member 13 at the upper end of rod 13
The side surface a is formed so as to abut the opening edge 23a on one side of the opening 23 so as to hold the vertical rod 13 in an upright state.

FIGS. 7 and 8 show the structure of the lock mechanism 14 for holding the side fence 1 in the upright state. The lock mechanism 14 is provided with a vertical rod 13 </ b> A located at the end of the side fence 1.
In the side surface of the end member 13a provided at the upper end of the end member 13a, a horizontal fitting hole 2 is formed in
4 is provided. On the other hand, one end of a lever 25 is rotatably mounted on a stopper member 30 provided at a side end portion of the upper horizontal rod 11, and is rotatably mounted on the other end of the lever 25. The distal end of the rotatably connected rotating arm 26 is rotatably connected to a fitting member 27 provided in the frame 20 of the upper horizontal rod 11 so as to be movable in the horizontal direction. Is elastically fitted into a horizontal fitting hole 24 provided in the end member 13a of the vertical rod 13A located at the end by a spring 29, thereby turning the vertical rod 13A. Movement is prevented, so that the side fence 1 can be held upright. Then, as shown in FIG. 8, the lever 2 is gripped and the projection 2 against the fitting hole 24 is pressed against the urging force of the spring 29.
The side fence 1 can be folded by releasing the fitting of 8 to make the vertical rod 13A rotatable.

The foldable side fence 1 provided with the lock mechanism according to the present invention as described above grasps the lever 25 of the lock mechanism 14 provided at the end of the upper horizontal rod 11, as shown in FIG. And the vertical rod 1 located at the end of the protrusion 28 of the fitting member 27
By releasing the fitting with the fitting hole 24 provided in 3A, the vertical rod 13A can be turned so that the side fence 1 is folded to one side 1 ′, and the side fence 1 is raised. When it is set to 1 ", the protrusion 28 provided on the fitting member 27 of the lock mechanism 14 is
A by elastically fitting into the fitting hole 24 of the vertical rod 13A
Is prevented from rotating, and is held upright.

In this side fence, a substantially L-shaped end member 13a is attached to the upper end of the vertical rod 13 of the side fence 1, and this end member 13a is attached to the frame 20 of the upper horizontal rod 11.
When the side fence 1 is folded, as shown in FIG. 2, when the side fence 1 is folded, the substantially L-shaped end member 13 a is inserted into the upper horizontal rod 11 as shown in FIG. From here, the rod 13b of the vertical rod 13 is moved substantially horizontally to the lateral side.
1 and can be folded so that the vertical rod 13 is pivotally attached to a mounting member provided on the lower surface of the upper and lower rods 11 as in the prior art. There is no bulky space.

In the above embodiment, the lower side bar 1 of the side fence 1 is used.
2 is detachably mounted on the side frame 3 of the bed 2, and the vertical rod 13 is pivotally attached to the lower horizontal rod 12 so that the vertical rod 13 can be raised and lowered. You may. Further, in this embodiment, an end member 13a formed in a substantially L-shape is provided only at the upper end portion of the vertical rod 13 and is pivotally mounted inside the upper horizontal rod 11. Similarly, the end may be bent and the bent end may be pivotally attached to the lower horizontal rod 12 or the side frame 3 of the bed so as to be capable of falling.

[0018]

As described above, the lock mechanism of the foldable side fence according to the present invention holds the lever of the lock mechanism provided at the end of the upper horizontal rod and holds the protrusion of the fitting member and the side fence. By releasing the horizontal fitting with the fitting hole provided in the vertical rod located at the end, the vertical rod can be turned so as to be rotatable and the side fence is folded to one side, and When the upright state is set, the protrusion provided on the fitting member of the lock mechanism is resiliently fitted in a horizontal direction into the fitting hole of the vertical rod located at the end by a spring, so that the vertical rod is fitted. It is configured to be held in an upright state by preventing rotation, and locking and releasing of the side fence is a horizontal fitting operation of the fitting member by a lever of a lock mechanism, The side fence will not fall down just by putting a hand on the lever, and a double lock mechanism is provided for safety. There is no need to attach the vertical rod itself, and the vertical rod itself has a fitting hole, so there is no need to provide a separate receiving member or the like on the vertical rod as in the conventional case. can do.

[Brief description of the drawings]

FIG. 1 is a side view of a bed equipped with a foldable side fence provided with a lock mechanism according to the present invention.

FIG. 2 is a side view showing a state where the side fence is folded.

FIG. 3 is a side view of a main part with a part broken away showing a state where the side fence is folded.

FIG. 4 is an exploded perspective view of a connecting portion between a vertical rod and an upper horizontal rod in the side fence.

FIG. 5 is a longitudinal sectional view of a connecting portion between a vertical rod and an upper horizontal rod.

FIG. 6 is a longitudinal sectional view of a connecting portion between a vertical rod and a lower horizontal rod.

FIG. 7 is a side sectional view of a main part showing a side fence lock mechanism according to the present invention.

FIG. 8 is a side sectional view of a main part showing an operation of the lock mechanism.

FIG. 9 is a side view of a bed showing a conventional example of a foldable side fence.

FIG. 10 is a partially broken side view showing a main part of the conventional side fence in a folded state.

FIG. 11 is a side sectional view of a lock mechanism in the conventional side fence.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Folding side fence 2 Bed 3 Side frame 4 Headboard 5 Footboard 6 Caster 7 Mattress 11 Upper horizontal rod 12 Lower horizontal rod 13 Vertical rod 13a End member 14 Lock mechanism 15 Mounting shaft 16 Mounting member 17 Support shaft 18 Support shaft 20 Frame 21 Cover 22 Decorative sheet 23 Opening 24 Fitting hole 25 Lever 26 Rotating arm 27 Fitting member 28 Fitting protrusion 29 Spring 30 Stopper member

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Hei 7-33322 (JP, U) Utility Model Registration 2578313 (JP, Y2) Japanese Utility Model 2-16688 (JP, Y2) Japanese Utility Model Sho 59-25381 ( JP, Y2) Jikken Sho 57-3494 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61G 7/05 A47C 21/08

Claims (1)

(57) [Scope of request for utility model registration] A foldable side fence provided with a plurality of vertical bars undulatingly provided on a side frame of a bed and having an upper horizontal bar pivotally attached to an upper end of the vertical bar to be freely foldable. The upper end is formed into a substantially L-shape, and the bent end portion is pivotally connected to the upper horizontal rod. A substantially horizontal fitting hole is provided in the direction opposite to the bending direction of the upper end, and one end is rotatably connected to the other end of a lever rotatably provided at a side end of the upper horizontal rod. The distal end of the moving arm is connected to a fitting member provided so as to be movable in a substantially horizontal direction within the upper horizontal rod, and a projection provided at the distal end of the fitting member is located at the end of the side fence by a spring. A foldable side fence, which resiliently fits into a substantially horizontal fitting hole provided at a bent upper end portion of a vertical rod.