JP3405210B2 - Sleeper 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 side rail of a bed attached to a fixing member of the bed.

[0002]

2. Description of the Related Art The side fences are provided to prevent the fall of sick people and the aged who are sleeping. And
This side fence is a fixed side fence part fixed to the side frame so that it can be used as a clue when getting up and also as a handrail when getting off the bed in addition to preventing falling etc. There is a device which is swingable and can be fixed at an arbitrary swing angle (for example, Japanese Patent Application No. 10-38303 by the applicant of the present application).

In the above-mentioned structure, the swing lever is swung to switch the stopper gear from the disengaged state in which the stopper gear is engaged with the movable side swinging section swing angle selection gear to the disengaged state and then to the engaged state. The movable side fence is switched between a swingable state and a non-swingable state with respect to the side fence.

Since the operating member for operating the stopper gear is the rocking lever as described above, the grip portion of the rocking lever largely projects, and the rocking lever is liable to be damaged due to contact with another object. Not only that, the swing lever is erroneously oscillated due to contact with another object, and for example, it may be used as a handrail without knowing that the fixing has been released, and there was room for improvement. In addition, a large stroke for swinging the swing lever is required, the placement position of the swing lever must be taken into consideration, and the arrangement of other members must be considered to avoid contact with other members. Since it must be done, the degree of freedom in design was low.
Further, the swing lever is operated by a sick person or an old person sleeping on the bed from the inside of the bed, or by a nurse or the like from outside of the bed. For this reason, the rocking lever is arranged so that it can be operated from any direction, but it is difficult to install the rocking lever at the optimum position that can be easily operated from any direction with a single rocking lever. , There was room for improvement.

[0005]

Therefore, in view of the above-mentioned situation, the present invention is intended to solve the problem of avoiding contact with other objects and increasing the degree of freedom in design. Moreover, the point is to provide a bed side fence with good operability.

[0006]

In order to solve the aforementioned problems, the present invention provides a side fence attached to a bed with a fixed side fence portion fixed to the bed and an end portion of the fixed side fence portion. The rotary shaft of the movable-side fence is rotatably supported inside a tubular body fixed to the end of the fixed-side fence, which is composed of a swingable movable-side fence. The movable side fence swing angle selection gear is integrally rotatably fitted on the outer side of the movable side fence swing angle selection gear, and the stopper is provided with a tooth part that meshes horizontally with a part of the tooth part formed on the side surface of this movable side fence part swing angle selection gear. The gear is provided in a state of being urged toward the disengagement side, and a rotary cam for switching this stopper gear from the disengaged state to the meshed state is provided. Two rotary operation members for rotating the rotary cam are provided from inside and outside the bed. The feature is that each is provided so as to be operable. Therefore, since the stopper gear can be switched between the disengaged state and the meshed state by rotating the rotation operating member, it is only necessary to provide a space for rotating the rotation operating member at its center. Further, the rotation operation member can be distributed to the inside and outside of the bed so that it can be located at the optimum position where it can be easily operated from both inside and outside of the bed.

By rotating the rotating cam clockwise or counterclockwise by a set angle, the stopper gear can be switched from the disengaged state to the engaged state or from the engaged state to the disengaged state. Two fixed parts, which are locked to the locking parts provided on the rotary cam in order to hold the gear in the disengaged position and the stopper gear in the meshed position, are provided in the fixed member for rotating and holding the rotary cam. There is. That is, when the rotary cam is rotated clockwise or counterclockwise by a set angle, the locking portion provided on the rotary cam is locked to one locked portion provided on the fixed member to hold the position, and the stopper is provided. When the gear is switched from the disengaged state to the meshed state and the rotary cam is rotated counterclockwise or clockwise from this position by the set angle, the locking part provided on the rotary cam locks with the other locked part. That position is maintained and the stopper gear is switched from the meshed state to the meshed released state.

A pair of legs that can be inserted into a plurality of holes formed in a holder provided in the bed is provided in the fixed side fence portion,
Each of these legs has a cylindrical fixed leg portion fixed to a horizontal pipe portion forming the lower end portion of the fixed side fence portion, and a male screw portion screwed to a female screw portion on the inner surface of the fixed leg portion on the outer surface. In addition, a rod-shaped body provided with a rotation operation portion for rotating operation at the upper end and a cone portion provided at the lower end of the rod-shaped body can be inserted, and the diameter becomes smaller toward the lower side, and the diameter center And a stopper member having substantially the same diameter as the fixed leg portion to be inserted into a horizontal through hole formed below the fixed leg portion. By rotating the rotating operation part in one direction, the rod-shaped body descends with respect to the fixed leg part to move the stopper member horizontally, and press the stopper member against the inner surface of the holder to fix the leg to the holder. You can Further, by rotating the rotation operation portion in the other direction from the fixed state, the rod-like body is lifted with respect to the fixed leg portion to release the moving force for moving the stopper member in the horizontal direction, and the leg is removed from the holder. It can be in a free state that is not fixed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a bed used in a hospital or the like, and the bed is arranged on a pair of left and right side frames 1 and 2 and on the front and rear ends of these side frames 1 and 2. Headboard 3 and footboard 4, and four floors 5, 6 mounted on the side frames 1, 2.
7 and 8 are the main members. INDUSTRIAL APPLICABILITY The present invention can be applied to a bed that does not use electric power, as well as an electric lifting type bed.

As shown in FIGS. 1 and 7, a pair of mounting portions 10 and 1 connected in the front-rear direction by connecting members 9 to the front and rear two positions on the lateral outer side surfaces of the side frames 1 and 2.
0 is fixed by welding or the like, and the holders 11 are fitted into the mounting portions 10 and 10, respectively.
A pair of legs 13, 13 forming the side fence 12 are inserted into the side fence 12 so that the side fence 12 is provided for the bed. In this embodiment, a pair of mounting portions 10 and 10 are provided at four positions on the bed, but the number of mounting portions 10 and 10 to be installed can be freely changed. Although the side fences 12 are attached to both the left and right sides of the bed, the side fences 12 may be attached to only one side.

As shown in FIG. 2 and FIG. 3, the side fence 12 is a fixed side fence portion 14 which is inserted and fixed to the holders 11 and 11 via the legs 13 and 13, and the fixed side fence portion 14. It is composed of a care arm 15 as a movable side fence portion swingably provided at the end of 14.

The fixed side fence portion 14 has an outer peripheral pipe portion 16 which is bent and formed in a substantially C-shape, and the outer peripheral pipe portion 16.
From the lower surface of the upper middle part of each, and,
Two vertical pipe parts 17, 17 connected to the lower end part of the outer peripheral pipe part 16 on the way, a horizontal pipe part 18 connecting the vertical pipe parts 17, 17 in the horizontal direction, and both end parts of the horizontal pipe part 18. It is composed of legs 13 and 13 which are mounted through the base. The specific configuration of the fixed side fence portion 14 is not limited to that shown in the drawing.

As shown in FIG. 7, each leg 13 is fixed to the horizontal pipe portion 18 with its upper portion penetrating, and its lower portion is inserted into the holder 11 so that it is slightly smaller than the inner diameter of the holder 11. A cylindrical fixed leg portion 19 having an insertion portion having a small outer diameter, and a male screw portion 20A screwed to a female screw portion 19A formed on the inner surface of the fixed leg portion 19 are provided on the outer surface, and the upper end is provided. Rotating operation part 2 for rotating operation
The rod-shaped portion 20 provided with 1 and the conical portion 20B provided at the lower end of the rod-shaped body 20 can be inserted, the diameter becomes smaller toward the lower side, and the hole 22A having the center of the diameter eccentric is provided and the fixing is performed. The fixed leg portion 19 is inserted into a horizontal through hole 19B formed below the leg portion 19 and a stopper member 22 having substantially the same diameter. 23 shown in the figure
Is a cap for closing the openings at both ends of the horizontal pipe portion 18. Therefore, when the legs 13 are inserted into the holder 11, the rotation operation portion 21 is rotated in the direction indicated by the arrow, that is, clockwise, as shown in FIG. Can be lowered to move the stopper member 22 horizontally, and the stopper member 22 can be pressed against the inner surface of the holder 11 to fix the leg 13 to the holder 11. In addition, by rotating the rotary operation part 21 in the opposite direction from the fixed state, that is, in the counterclockwise direction, the rod-shaped body 20 rises with respect to the fixed leg part 19 and the stopper member 22 is moved horizontally. The moving force for moving is released, the legs 13 are released from the holder 11 in a free state, and the side fence 12 can be removed from the bed.

As shown in FIG. 4, the care arm 15 has a support plate 24 attached to one end of the outer peripheral pipe portion 16.
It is rotatably supported inside the tubular body 25 fixed to the. More specifically, the care arm 15 has a tubular handrail portion 26 formed in a substantially U-shape, and the handrail portion 2.
6 and a urethane tube 27 covering the surface thereof. Reference numeral 28 shown in FIG. 4 is a cap for closing the tip opening of the handrail 26. Also, 29 shown in the figure
Is a collar attached to the upper end of the tubular body 25.
Reference numeral 33 shown in the drawing is a hexagonal shaft 30 for preventing the hexagonal shaft 30 described later from coming off, and is screwed into the lower end of the hexagonal shaft 30 via a housing 33 and a washer 43 described later.

The care arm 15 is configured to be swingable as described above and is also configured to be fixed at any swing position. The configuration will be described with reference to FIG.
As shown in FIG. 6, a hexagonal shaft 30 constituting a rotating shaft is fitted and fixed to an end portion of the handrail portion 26 on the tubular body 25 side, and a movable side fence portion swinging angle is attached to a lower end portion of the hexagonal shaft 30. Selection gear 31
(Hereinafter, referred to as a selection gear) is externally fitted and screwed into the screw holes 25A and 25A (only one screw hole is shown in FIG. 6) of the tubular body 25 by screws 41 and 42, whereby the care arm 15 is provided.
Split case 33 for interior of the lock mechanism of
The housing 33 including A and 33B is fixed to the care arm 15 side. The lock mechanism of the care arm 15 is
The selection gear 31, a stopper gear 34 having a tooth portion 34A that horizontally meshes with a part of a tooth portion 31A formed on the side surface of the selection gear 31, and a spring that urges the stopper gear 34 toward the disengagement side. 35, a rotation cam 36 for forcibly switching the engagement gear urging the stopper gear 34 to the engagement state, and the split case 33 for rotating the rotation cam 36.
Two rotary operation members 37 attached to A and 33B,
And 38. The stopper gear 34 is
The upper end is formed on one side surface of the lower portion of the swing arm 40 fitted onto the tubular body 39 attached to the split case 33. Although the stopper gear 34 is meshed with the selection gear 31 by the swinging of the swinging arm 40 or released from the meshing, the stopper gear 34 itself is slidably provided, and the selection gear 31 is slid by sliding the stopper gear 34.
It may be configured to be able to change the meshing state with.
A hemispherical projection 44 (only one side surface is shown) is bulged on each of both side surfaces of the rotary cam 36, and two concave portions 45 and 46 to which the projection 44 is locked are formed in the divided case 3.
3A, 33B (only one of the split cases 33 is shown), and the projection 44 is locked in the recess 45 or 46, so that the rotation operation members 37, 38 can be fixed in the rotation position. There is. The protrusion 44 may be a recess and the recess 45 or 46 may be a protrusion. The shapes of the protrusion 44 and the recess 45 or 46 are not limited to those shown in the drawing. In addition, the rotary cam 36
For engaging the locking holes 38A (only one rotation operating portion 38 is shown) formed in the rotation operating members 37, 38 on both side surfaces of the rotary operating member 37, 38 to integrate the rotary cam 36 with the rotary operating members 37, 38. 36A of engaging projections are provided.

Therefore, by rotating the rotary operation member 37 located on the outer side of the bed 90 ° clockwise from the state of FIG. 5, the concave portion 40A formed on the back surface of the swing arm 40 is rotated by the rotary cam. As shown in FIG. 4, the bulging portion 36 swings toward the meshing side against the urging force of the spring 35 to mesh the stopper gear 34 with the selection gear 31 and fix the care arm 15 at the swinging position. can do. Further, from the state shown in FIG. 4, by rotating the rotation operation member 37 counterclockwise by 90 °, the rotary cam 3 that pushes the recess 40A formed on the back surface of the swing arm 40.
The bulging portion of 6 moves upward, the stopper gear 34 is separated from the selection gear 31 by the urging force of the spring 35, and the care arm 15 can be freely swung.
The one rotation operation member 37 is used when operating from the outside of the bed, and the other rotation operation member 38 is used when operating from the inside of the bed. As shown in FIG. 2, the care arm 15 is configured to be swingable from a position aligned with the fixed side fence portion 14 to a position displaced 145 degrees outward (shown by a two-dot chain line in the figure). However, in practice, it is often set to 90 degrees. The swing angle of the care arm 15 may be set to any maximum swing angle of 145 degrees or less, or any maximum swing angle of 145 degrees or more.

In the above-described embodiment, the engagement state between the stopper gear 34 and the selection gear 31 is switched by rotating the rotation operation member 37 or 38 to the two positions within the angle range of 90 °. 360 ° in direction
The rotation cam 36 may be configured to be rotatable, and the cam shape of the rotary cam 36 may be changed so that the meshing state of the stopper gear 34 and the selection gear 31 can be switched each time the rotary operation is performed by 90 °. . Further, the shape of the cam of the rotary cam 36 may be changed so that the operation angle of the rotary operation member 37 or 38 is smaller than 90 °, or the angle is larger than 90 °. Alternatively, the operation angle of the rotary operation member 37 or 38 can be freely changed.

[0018]

According to the first aspect of the present invention, the operating member for switching the stopper gear between the disengaged state and the meshed state is configured to be of a rotary type, so that it can be largely projected to the outside as in the case of the swing type. Since this can be avoided, not only is there no damage or the like due to contact with other objects, but also the space for the operating member can be reduced and the degree of freedom in design can be increased. Further, it becomes possible to dispose the two operation members at optimal positions so that the operation members can be easily operated from inside and outside the bed, and operability can be improved.

According to the second aspect of the present invention, since the rotary cam can be held at the disengagement position of the stopper gear and the engagement position of the stopper gear, for example, loosening of the screw tightened as in the case of fixing by screw type, etc. As a result, the stopper gear does not unexpectedly switch to the meshing disengagement position, and high reliability can be achieved. Moreover, since the holding force for holding the stopper gear in the disengaged position and the engaged position can be made constant at all times, reliable position holding can be performed regardless of the operator.

According to the third aspect of the present invention, the rotation operation portion is rotated to vertically move the rod-like member with respect to the fixed leg portion, thereby moving the stopper member in the horizontal direction and fixing the leg to the holder. Or, since it is a structure for releasing the fixation, for example, the stopper member is configured to be swingable.
Compared with the case where the legs are fixed to the holder by swinging the stopper member and pressing one end of the stopper member against the wall surface of the holder, the pressing force of the stopper member against the wall surface of the holder is increased, etc. There is an advantage that not only the pressing force can be changed and adjusted, but also the change and adjustment can be performed steplessly.

[Brief description of drawings]

[Figure 1] Perspective view of a bed with side fences attached

[Figure 2] Plan view of the side fence

[Figure 3] Side view of side fence

FIG. 4 is a vertical cross-sectional view showing an attachment portion between a care arm and a fixed-side fence portion.

5 is a vertical cross-sectional view showing the main part of FIG.

FIG. 6 is an exploded perspective view showing an attachment portion between a care arm and a fixed side fence portion.

FIG. 7 is a vertical cross-sectional view showing a state in which the legs of the fixed side fence part are inserted into the holder.

[Explanation of symbols]

1,2 Side frame 3 Headboard 4 Footboard 5,6,7,8 Floor 9 Connecting member 10 Attachment 11 Holder 12 Side fence 13 Leg 14 Fixed side fence 15 Care arm (movable side fence) 16 Peripheral pipe Part 17 Vertical pipe part 18 Fixed leg part 19A Female screw part 19B Through hole 20 Rod part 20A Male screw part 20B Conical part 21 Rotation operating part 22 Stopper member 22A hole 23 Cap 24 Support plate 25 Cylindrical body 26 Handrail part 27 Urethane tube 28 Cap 29 Collar 30 Hexagonal shaft (rotary shaft) 31 Movable side swing part swing angle selection gear 31A Teeth 32 Screw 33 Housing 33A, 33B Split case 34 Stopper gear 34A Teeth 35 Spring 36 Rotation cam 36A Engagement projection 37, 38 Rotating operation member 38A Locking hole 39 Cylindrical body 40 Swing arm 40A Recess 41,42 Screw 43 Washer 44 Projection (locking part) 45,46 Recess (locked part)

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Claims (3)

(57) [Claims] 1. A side fence attached to a bed is composed of a fixed side fence portion fixed to the bed and a movable side fence portion swingably provided at an end of the fixed side fence portion. The rotating shaft of the movable side fence is rotatably supported inside the cylindrical body fixed to the end of the fixed side fence, and the movable side fence swing angle selection gear is integrally rotatably attached to this rotary shaft. This stopper gear is fitted with a stopper gear provided with a tooth part that meshes horizontally with a part of the tooth part formed on the side surface of this movable side swing part swing angle selection gear, with this stopper gear being biased toward the disengagement side. A side fence of a bed, wherein a rotary cam for switching from the disengaged state to the meshed state is provided, and two rotary operation members for rotationally operating the rotary cam are provided so as to be operable from both inside and outside of the bed, respectively. 2. The rotating cam is configured so that the stopper gear can be switched from a disengaged state to a meshed state or from a meshed state to a disengaged state by rotating the rotary cam clockwise or counterclockwise by a set angle. Are held at the disengagement position of the stopper gear and the meshing position of the stopper gear, two locked parts that are locked to a locking part provided on the rotary cam are used as a fixing member that rotates and holds the rotary cam. The side fence of the bed according to claim 1, which is provided. 3. A pair of legs that can be inserted into a plurality of holes formed in a holder provided in the bed is provided in the fixed side fence portion, and each of these legs constitutes a lower end portion of the fixed side fence portion. A cylindrical fixed leg portion fixed to the horizontal pipe portion and a male screw portion that is screwed into a female screw portion on the inner surface of the fixed leg portion are provided on the outer surface, and a rotation operation portion for rotating the upper end is provided. A rod-shaped body provided with this and a conical portion provided at the lower end of this rod-shaped body can be inserted, and the diameter becomes smaller toward the lower side, and a hole with the center of the diameter eccentric is provided and is formed below the fixed leg portion. The side fence of the bed according to claim 1, wherein the fixed leg portion is inserted into the horizontal through hole formed therein and a stopper member having substantially the same diameter as the fixed leg portion.