JP2003159159A - Lock device for side frame of bed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock device for a side frame, which can dissolve problems to be disadvantageous in handling and to elapse much time for assembling work. <P>SOLUTION: This is a lock device for a side frame of a releasable bed to be fixed by inserting the leg part 15D of a side frame 15 from upside into an engaging hole formed in a side holder 16 projected outward from both right and left sides of the bed part. A pressing member 21 to obstruct upward movement of the leg part 15D by pressing the leg part 15D to a position on the downside periphery face of the leg part 15 of the side frame 15 in a direction orthogonally cross the leg part 15D is equipped on the side holder 16. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a releasable bed in which the leg portions of side rails (side rails) are inserted from above into locking holes formed in side holders protruding outward from both left and right sides of a floor portion and fixed. The locking device for the side fence in.

[0002]

2. Description of the Related Art By fixing a side fence to a side holder with the side fence lock device, the side fence is prevented from coming off easily from the side holder, but at the time of getting on / off a bed, etc. After the lock device is unlocked, the side fence is removed, so that the side fence can smoothly get on and off the bed. An example of a lock device for the side fence in the bed is disclosed in Japanese Patent Laid-Open No. 9-266831. This is a two-piece internal hollow column with legs that fit into locking holes formed in the side frame of the bed.
A side fence is composed of a book and a fence formed on the upper side of these legs, is inserted into the inside of the one of the columns, and penetrates through the base frame member attached to the upper end opening of the column to form an upper side. An operation lever for moving in the longitudinal direction of the shaft member is pivotally connected to the upper end of the shaft member protruding in the swingable manner about a horizontal axis. After the lower end of the shaft member is inserted into the lower end opening of the strut and protrudes through a conical sleeve that is tapered toward the lower end side, the protruding part is inserted into a cylindrical presser, and the shaft member A part of the expanding end portion, which has a diverging shape toward the lower end side formed at the lower end of the, protrudes downward from the pressing element. Therefore, by swinging the operating lever from the vertical posture to the horizontal posture, the shaft member is pushed upward.
At this time, the pusher is spread by the expanded end portion of the shaft member, and by pressing the pusher against the inner wall surface of the locking hole, it is possible to prevent the side fence from moving upward. There is. The lock device can be unlocked by switching the operating lever from the horizontal posture to the vertical posture.

[0003]

According to the above-mentioned structure, the structure of the supporting column becomes complicated because the shaft member is inserted inside the supporting column and the pressing member is attached, and it takes a lot of time for the assembling work. In addition to the above-mentioned extra members, the diameter of the side fences must be increased, which increases the weight of the side fences and makes them difficult to handle. In addition, since the operation lever is located at the upper end of the support column, the person in the bed may unexpectedly touch the operation lever when he or she turns over and the lock may be released, which is unreliable. .

In view of the above situation, the present invention provides a locking device for a side fence in a bed, which can eliminate disadvantages in handling and long assembly work time. In point.

[0005]

According to the present invention, in order to solve the above problems, the leg portions of the side fences are inserted from above into the locking holes formed in the side holders protruding outward from the left and right sides of the floor. In a locking device for a side fence in a releasable bed that is fixed, the leg is pushed upward from a direction orthogonal to a portion located on the lower peripheral surface of the leg of the side fence to move the leg upward. It is characterized in that the side holder is provided with a pressing member for preventing the above. Therefore, simply by pressing the externally exposed pressing member provided on the side holder, the pressing member presses the leg portion of the side fence from the direction orthogonal to that, and the leg portion presses against the specific portion of the side holder. The side fence is prevented from moving upward. And since it is a pressing member located below the bed provided in the part of the side holder having substantially the same height as the part located on the lower peripheral surface of the leg of the side fence, it is better to be on the bed. A hand does not hit the pressing member due to overturning, and the pressing member is not accidentally operated. The pressing member may be provided so as to be swingable around a horizontal axis and also slidably movable. When the side fence is not needed, the side fence is pulled out from the locking hole of the side holder by releasing the pressing force of the pressing member against the leg portion and placed at a predetermined position.

The pressing member is attached to the side holder so as to be swingable around an upper horizontal shaft core, and a portion for pressing the leg portion by the pressing member is located below the swing shaft core. ing. By swinging the pressing member as described above, it is possible to switch to a locking posture in which the pressing member presses the leg portion, or to take a lock releasing posture in which the pressing portion is released by separating from the leg portion. . And
In the case of the locking posture, the pressing member pushes the leg portion below the swing axis, so that the pushing member bites into the leg portion as the leg portion moves upward. It can be swung to the side to make it more difficult to pull out.

The pressing member is formed in a shape having front and rear end faces, and the side holder is provided with a pair of front and rear guide faces for contacting and guiding the front and rear end faces of the pressing member, and the guide faces are provided with the front and rear end faces. The protrusions formed in the front-rear direction form locking holes for locking and holding the pressing member in the locked posture, so that the pressing member can be smoothly moved to the locking side by the guide action of the guide surface. Therefore, the locking posture can be surely maintained in the locking hole.

By making the locking hole a long hole which is long in the left-right direction, manufacturing errors and the like can be absorbed.

The side holder is attached to a back floor which is located on the front side of the floor constituting the floor section and which is capable of undulating and swinging around a horizontal axis on the rear side. With the above configuration, it is possible to prevent the body from moving from the left and right to the outside of the bed by the side fence while the back floor is swinging in the standing posture or even in the standing posture. it can.

The side holder is pivotally connected to the rear end of the knee floor which is located on the rear side of the floor constituting the floor and is capable of undulating and swinging around a front horizontal axis. The legs are attached to the floor. With the above configuration, the posture of the body is changed from left to right while the knee floor is swinging to the standing posture or the posture is changed in the standing posture. Can be prevented from moving outside.

[0011]

1 to 3, there is shown a bed, which includes a pair of left and right front and rear frames 1 and 1 each having casters 2 at the front and rear ends thereof, and two front and rear portions of these front and rear frames. A fixed frame 4 including left and right frames 3 and 3 that connect the inner surfaces of the left and right with each other in the left and right direction, and a pair of front and rear link mechanisms 5 and 5 and a telescopic electric motor (not shown) with respect to the fixed frame 4. And a pair of left and right support frames 6 and 6 supported so as to be vertically movable, and a pair of front and rear connecting frames 7 and 7 welded to the front and rear ends of these support frames 6 and 6 (only the front connecting frame is shown). A headboard 8 attached to the front connecting frame 7, a floor 9 supported on the upper surfaces of the supporting frames 6 and 6, and a footboard attached to the rear connecting frame (not shown). And a de 10.

The floor 9 is arranged in this order from the front side in the front-rear direction (headboard 8 side) to the back floor 11, the seat floor 12, the knee floor 13, and the leg floor 14. The three back floors 1
1, the knee floor 13 and the leg floor 14 are movable as described later, and only the seat floor 12 is fixed. Side holders 16 as holding members for inserting and holding side fences (also referred to as side rails) 15 are attached to the left and right sides of the back floor 11 and the leg floor 14, respectively. By moving the side fence 15 integrally with the movement of the leg floor 14, the body is guided so as not to move left and right and fall from the bed. The side fence 15 can be attached to the knee floor 13 as well. Further, here, the case where the three back floors 11, the knee floor 13, and the leg floor 14 are movable is shown, but they may be fixed.

As shown in FIGS. 2 and 3, the back floor 1 is
A back floor drive device 17 is provided for switching the back floor 11 between the standing posture in which the back floor 11 is raised and the use posture in which the back floor 11 is returned to the horizontal posture by performing an oscillating operation. The back floor drive device 17 includes a back floor operation arm 18 having one end fixed to the back surface (lower surface) of the back floor 11 for swinging the back floor 11, and the other end of the operation arm 18. And a retractable back floor electric motor 19 having a rod 19A having one end attached thereto. Therefore, when the rod 19A of the electric motor 19 is extended, the back floor 11 is moved while the rear end of the back floor 11 is moved forward through the guide rails 20 attached to the left and right ends of the seat floor 12. The posture is changed to the standing posture (the maximum is set to about 80 degrees in the chain double-dashed line in FIG. 3, but it can be set any number of times), and the back floor 11 is placed on the lumbar vertebra or abdomen of the body.
It is possible to avoid applying bending pressure due to the posture change to the standing posture. Also, electric motor 1
By performing a shortening operation of the rod 19A of No. 9, it is possible to change the posture of the back floor 11 to the use posture while moving the rear end of the back floor 11 to the rear side through the guide rail 20.

Like the back floor 11, the knee floor 13 is also a knee floor driving device (not shown) for switching between the standing posture in which it is raised and the use posture in which it is returned to the horizontal posture.
As shown in FIG. 2, the knee floor 13 is placed in an upright posture (the maximum angle may be set any number of times), and the leg floor 14 is lifted. The posture can be changed to almost a V shape.

As shown in FIGS. 1 and 2, the side fence 15 is made of a metal pipe member, and may be made of wood or synthetic resin if it has substantially the same strength. Good. Further, the side fence 15 may be composed of a large number of pipes 15P as shown in FIGS. More specifically, the main body portion 15A whose outer shape is formed into a substantially parallelogram.
And a horizontal partition 15B for partitioning the inside of the main body 15A into almost half in the vertical direction, and the partition 15
Although the side fence 15 is composed of a pair of front and rear legs 15C and 15D that project downward from two front and rear locations on the lower surface of B, other configurations may be used. Reference numeral 29 shown in FIGS. 6 and 7 denotes a resin cap that is fitted onto the leg portions 15C and 15D from below, and is made of metal leg portions 15C and 1D.
There is an advantage that it is possible to prevent the generation of impact noise when the 5D is inserted into the side holder 16, but the resin cap 29 may be omitted. A ring-shaped (annular) protrusion 29A is integrally formed on the upper end of the resin cap 29 so as to contact the upper end of a sleeve 26, which will be described later, to regulate the insertion position of the leg portions 15C and 15D with respect to the side holder 16. ing.

The side holder 16 is shown in FIGS.
As shown in FIG. 5, the synthetic resin is open on the inside and the cross-sectional shape of the inner hollow type is formed into a substantially U shape, and when viewed from the left and right, the elongated holder body 16E and It is composed of lower holders 16F, 16F, which are substantially V-shaped, and are integrated with the lower surfaces of both ends of the holder body 16E in the longitudinal direction, and the leg portions 15C, 15D can be inserted into the upper side wall of the holder body 16E. A pair of through holes 16A and 16B (only the rear through holes are shown in FIG. 9) are formed. As shown in FIGS. 5 and 6, the side holder 16 is a side bumper fixed to a pair of front and rear brackets 21 and 21 fixed to the lower surface of the back floor 11 (leg floor 14 in FIG. 5). It is fixed to the unit 22. The side bumper unit 22 is fixed by a bolt in a state of being pressed against the inner surfaces of the brackets 21 and 21 facing each other,
In addition, a pair of rectangular tubular front and rear horizontal frame portions 23, 23 protruding outward from the left and right ends of the back floor by a set length, and the left and right inner side end portions of the horizontal frame portions 23, 23. It is possible to fix the side holder 16 by connecting the reinforcing member 24 in the shape of a rectangular tube that connects the side frame 16 and the lateral end portions of the lateral frame parts 23, 23 in the left-right direction and entering the inside space of the side holder 16. As shown in FIG. 9, a pair of upper and lower through holes 25A, 2 for inserting and supporting the leg portions 15C, 15D inserted in the side holder 16 are formed.
5B is formed before and after the side bumper 25. Figure 9
Reference numeral 26 denotes a side bumper 25 for inserting the leg portion 15D into the through hole 25A without a gap.
It is a sleeve inserted and fixed from above.

As shown in FIG. 9, a portion of the lower peripheral surface of the leg portion 15D located on the outer side in the left-right direction is pressed to prevent the leg portion 15D from moving upward. The side holder 16 is provided with a pressing member 27 made of aluminum (may be synthetic resin or the like as long as it is not easily deformed) in a state exposed to the outside. Specifically, the pressing member 27 is provided with a recess 16C formed in the side holder 16.
The position is freely changeable between a locked position in which the lock is inserted and an unlocked position that is moved outward from the recess 16C.
As shown in FIGS. 9 and 10A and 10B, the pressing member 27 has a substantially rectangular outer shape and a substantially T shape in a side view.
Is formed in a V shape, and has a large number of recesses 27A, 27 inside.
B, 27C, 27D, 27E and 27F are formed. Then, a through hole 27K for penetrating the pin 28 is provided in the upper portion, and as shown in FIG. 9, the pressing member 27 is held with its lower end and is swung about the horizontal axis X in the front-rear direction on the upper side. As a result, it is possible to switch between the unlocked posture shown in FIG. 8A and the locked posture shown in FIG. 8B. When the posture of the pressing member 27 is changed, the wall surfaces 16D, 16D of the front and rear vertical walls that form the recess 16C form a pair of front and rear guide surfaces that abut and guide the front and rear end surfaces 27G, 27G of the pressing member 27. is doing. Further, on the surface (outer surface) of the pressing member 27 that is located outward in the left-right direction, a horizontal protrusion 27S for preventing the lower end of the pressing member 27 from slipping when gripped with a finger is provided.
One (or any number) is formed at predetermined intervals. Therefore, as shown in FIG. 9, a specific finger is thrust into the recess 27F from the gap between the outer surface 16G recessed inside the side holder 16 and the pressing member 27, and another finger is applied to the protrusion 27S to press the pressing member 27. The lower end of the gripping member can be securely rocked upward. or,
Circular protrusions 27T are formed on the lower portions of the front and rear side surfaces of the pressing member 27, and are long in the left-right direction as locking holes for locking and holding the protruding portions 27T in the locked posture of the pressing member 27. The long hole 16H is formed in each of the front and rear wall surfaces 16D and 16D, and the pressing member 27 is formed.
The lock position can be reliably maintained.

The state in which the leg portion 15D is fixed and the state in which the leg portion 15D is released by the pressing member 27 will be described.
From the posture shown by the chain double-dashed line in FIG.
When the leg portion 15D is inserted between the pair of front and rear extending plate portions 27H, 27H formed on the upper portion of the pressing member 27 by entering into C, if the leg portion 15D cannot be moved in the front-rear direction. At the same time, the concave portion 27C presses the leg portion 15D, so that the leg portion 15D is pressed against the inner surface of the sleeve 26 or the through hole 25B of the side bumper 25.
Even if the leg portion 15D attempts to move upward, the friction force with the inner surface of the sleeve 26 or the through hole 25B of the side bumper 25 generated by the pressing force of the recess 27C causes the leg portion 15D to move.
The state in which D is prevented from moving upward (leg 15D
Fixed state). At this time, the protruding portion 2 of the pressing member 27
Since the 7T and 27T are locked in the long holes 16H and 16H, the pressing member 27 cannot be easily switched to the unlocked posture. When switching the pressing member 27 to the unlocked posture, as described above, the pressing member 2
The lower end of 7 is gripped and swung around the upper horizontal axis X, and the posture is changed to the posture shown by the chain double-dashed line in FIGS. 8B and 9. As described above, when the pressing portion, that is, the recess 27C is positioned below the horizontal axis X above the pressing member 27, as shown in FIG. 11, when the leg portion 15D is lifted upward, Since the pressing member 27 is swung about the horizontal axis X toward the side that bites into the leg portion 15D, the leg portion 15D can be more difficult to come out of the side holder 16, but the pressing member 2
7 may be swingably provided around a lower horizontal axis. Further, the pressing member 27 may be configured to be swingable, or may be configured to be a sliding type that is movable in the horizontal direction. Further, although the pressing member 27 is arranged so as to be exposed outward in the left-right direction so that it can be easily operated from both left and right sides, the pressing member 27 is arranged so as to be exposed outward in the front-rear direction. May be. Also, one leg 15
Although it is a structure for preventing the upward movement of D, a structure for preventing the upward movement of the other leg portion 15C can also be added and implemented.

[0019]

According to the first aspect of the present invention, the side fence is provided with a simple structure in which the externally exposed pressing member provided in the side holder is provided on the leg portion of the side fence so as to be operable. It is possible to provide a locking device for the side fences in the bed, which can be prevented from moving to the side and can be advantageous in both the handling surface and the mounting surface. And since it is the pressing member provided in the part of the side holder having substantially the same height as the lower peripheral surface of the leg portion of the side fence, the person on the bed does not hit the pressing member by turning over. Therefore, the pressing member is not accidentally operated, and the reliability can be improved.

According to the second aspect of the present invention, when the pressing member is rocked to switch to the locked posture, the pressing member rocks to the side that bites into the leg as the leg moves upward. Since it is configured as described above, it can be more difficult to pull out,
It is possible to provide a highly reliable lock device for a side fence in a bed without unexpectedly becoming unlocked.

According to the third aspect of the present invention, the pressing member can be smoothly moved to the pressing side by the guide action of the guide surface, and the pressing member can be reliably held in the locked posture by the locking hole. It is possible to provide a side fence locking device that is advantageous in terms of both reliability and reliability.

According to the fourth aspect of the present invention, since the locking hole is formed as a long hole that is long in the left-right direction, manufacturing errors and the like can be absorbed, which is advantageous in manufacturing.

[Brief description of drawings]

FIG. 1 is a perspective view of a bed.

FIG. 2 is a perspective view of the bed in which the back floor is slightly lifted and the knee floor and the leg floor are changed to the V-shape.

FIG. 3 is a partially cutaway vertical side view of the bed.

FIG. 4 is a perspective view of a side fence.

FIG. 5 is a perspective view showing a mounting structure of a side holder of a side fence.

FIG. 6 is a vertical cross-sectional rear view showing the mounting structure of the side holder of the side fence.

FIG. 7 is a side view showing an attachment structure of a side holder of a side fence.

FIG. 8 is a partially cutaway vertical rear view of the side-rail side-holder mounting structure, in which (a) shows the pressing member in a locked position, and (b) switches the pressing member to an unlocked position. Shows the closed state.

FIG. 9 is a vertical sectional rear view of a side holder of a side fence.

FIG. 10 shows a pressing member, (a) of which is a front view thereof,
(B) is a right side view of (a) as viewed from the right.

FIG. 11 is an explanatory diagram showing a state in which the leg portion is being pressed by the pressing member.

[Explanation of symbols]

1 Front and rear frame 2 Casters 3 Left and right frame 4 Fixed frame 5 Link mechanism 6 Electric motor 7 Connection frame 8 Headboard 9 Floor 10 Footboard 11 back floor 12 seat floor 13 Knee floor 14 Leg floor 15 side fence 15A main body 15B partition section 15C, 15D leg section 15P pipe 16 side holder 16A, 16B Through hole 16D Wall surface (guide surface) 16G outer surface 16H long hole (locking hole) 17 Drive device for back floor 18 Operation arm for back floor 19 Electric motor for back floor 19A rod 20 Guide rail 21 Bracket 22 Side bumper unit 23 horizontal frame part 24 reinforcing member 25 Side bumper 25A, 25B Through hole 26 sleeve 27 pressing member 27A to 27F Recessed portion 27H Extended plate portion 27L Vertical rib 27S Protrusion 27T protruding part 28 pins 29 Resin Cap 29A Projection

Claims (6)

[Claims] 1. A lock device for a side fence in a releasable bed in which a leg portion of a side fence is inserted from above and fixed to locking holes formed in side holders projecting outward from both left and right sides of a floor portion, wherein the side is a side lock. The side holder is provided with a pressing member for pressing the leg from a direction orthogonal to the part located on the lower peripheral surface of the leg of the fence to prevent the leg from moving upward. Locking device for the side fence in the bed. 2. The pressing member is attached to the side holder so as to be swingable around an upper horizontal shaft core, and a portion for pressing the leg portion by the pressing member is located below the swing shaft core. The lock device for the side fence in the bed according to claim 1, which is positioned. 3. The pressing member is formed in a shape having front and rear end faces, and the side holder is provided with a pair of front and rear guide faces for contacting and guiding the front and rear end faces of the pressing member. The lock device for a side fence in a bed according to claim 1 or 2, wherein the protrusions formed on the front and rear end faces respectively project in the front and rear direction to form locking holes for locking and holding the pressing member in the locked posture. 4. The lock device for a side fence in a bed according to claim 3, wherein the locking hole is a long hole that is long in the left-right direction. 5. The side holder is attached to a back floor which is located on the front side of the floor constituting the floor section and which is capable of undulating and swinging around a horizontal axis on the rear side. The lock device of the side fence in the bed according to any one of 1 to 4. 6. The side holder is pivoted to a rear end portion of a knee floor which is located on a rear side of a floor constituting the floor portion and which is capable of undulating and swinging around a front horizontal axis. The lock device for a side fence in a bed according to any one of claims 1 to 4, wherein the lock device is attached to a floor of the legs connected to each other.