JP3064147U - Electric simple folding bed - Google Patents

Abstract

(57) [Problem] To provide an electric simple folding bed capable of easily inclining each seat of a back, a waist, and a leg using a motor. When a movable rod (21) is pulled by driving a motor, a central wire (25) displaces a lower push-up member (130) so as to incline a leg sheet (3), and a rotating arm (10) is at least a rotating arm (10). The upper wire 102 is tilted so as to push up the back seat 1, while the center wire is moved so that the back seat 1 and the leg seat 3 return to a horizontal state when the movable rod 21 is protruded by the driving of the motor. When the movable rod 21 protrudes, the moving shaft 221 moves to the rear end of the slot 101, and the left and right wires 23 and 24 move the pair of left and right caster stands 30 and 40 against the spring 42. It is characterized by standing up and raising the waist sheet 2.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a folding bed provided with a single motor, and more particularly to an electric simple folding bed capable of easily adjusting a tilt angle of a back seat, a waist seat, and a leg seat by driving a motor.

[0002]

[Prior art]

 As is well known, folding beds are widely used in hospitals and the like because of their convenience and comfort. In recent years, those with adjustable tilt angles of the back and legs have appeared, and are becoming popular for home use.

[0003] A conventional folding bed is generally a two-stage adjustable type, having a seat divided into a front seat and a rear seat. The front seat is provided by a front frame, and the rear seat is provided by a rear frame. Supported.

[0004] One support rod is rotatably attached to an intermediate portion between the front frame and the rear frame. The angle of the folding bed is adjusted by adjusting the meshing position between the support rod and the connecting rod having a pawl provided on the front frame.

[0005]

[Problems to be solved by the invention]

 However, this type of folding bed requires the user to get out of the bed when adjusting the angle between the front frame and the rear frame, and to get out of the bed again if the set angle is not desirable. There is a problem that it must be adjusted. This is inconvenient for the sick and elderly, aside from healthy people.

[0006] Folders that have been used for a certain period of time often have a reduced engagement state at the pawls of the connecting rods, causing rattling or rattling, and possibly disturbing the assembled state of the folding bed.

[0007] In particular, it is difficult to set the angle to the user's preference only by adjusting the angle between the back and the leg by pawling the support rod and the connecting rod, and it is difficult to set the bed for a long time or for a long time. When used, fatigue is felt and comfort is reduced.

[0008] Accordingly, recently, the connection between the front frame and the support rod is screwed, and the angle between the back and the leg can be adjusted by manually turning the handle. A folding bed has emerged.

However, this screw-type bed also has a disadvantage that the angle must be adjusted before using the bed, and in the case of a sick or elderly person, the power of another person must be used. In addition, since this is also only for adjusting the angle between the back and the leg, there is a problem that it is difficult to make the form or state of the bed suitable for the user's preference.

[0010] For this reason, the present inventors proposed an electric folding bed in which the angle between the back and the leg can be adjusted by using a motor in 1997 (Taiwan application No. 86221378). This electric foldable bed is easy to use for the sick and the elderly, and is preferable.However, since only the angle between the back and the legs is adjusted, the bed configuration or the form that suits the user's preference is suitable. Improvements in enabling the condition are desired.

The present invention has been made in view of the above-described problems, and has as its object to provide a folding bed that can easily tilt each seat of a back, a waist, and a leg using a motor. I do.

[0012]

[Means for Solving the Problems]

 The object of the present invention is achieved by the following means.

(1) A foldable bed frame composed of an upper, middle, and lower tier, which is supported by a stand, and on which a back seat, a waist seat, and a leg seat are laid, provided at a predetermined position on the bed frame; A driving unit configured to convert the rotational force of the motor into a front-to-rear drive of one movable rod, a dynamic shaft provided at the distal end of the movable rod, and the dynamic shaft being slidably fitted. A rotating arm provided with an upper push-up member for pushing up the back sheet at the upper portion, and one end connected to the tip of the movable rod, and one other end at the center being The other two are connected to a lower push-up member provided in the lower middle of the leg sheet, and the other two are located below the waist sheet via pulleys provided on both sides of the bed frame and are always upward. Three wires connected to a pair of left and right caster stands urged by a spring and the motor drives the movable rod so that the center wire tilts the leg sheet upward. When the lower push-up member is displaced, and the rotating arm is tilted so that at least the upper part of the rotating arm pushes up the back seat, while the movable rod is projected by driving the motor. The center wire is relaxed so that the back sheet and the leg sheet return to a horizontal state, and when the movable rod is further extended, the driving shaft moves to the rear end of the slot, and the left and right wires are moved. A motorized easy-folding bed characterized in that a pair of left and right caster stand stands upright against the spring to raise the lumbar seat.

(2) The electric simple folding bed, wherein one end of the left and right wires and one end of the central wire are connected to one wire connecting portion connected to the driving shaft.

[0015]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an overall perspective view showing an embodiment of the present invention, FIG. 2 is a side view of the embodiment, and FIG. 3 is a schematic perspective view showing a relationship between a bed frame and a folding mechanism of the embodiment. 4 is an explanatory view for explaining the operation of the rotary arm of the embodiment, FIG. 5 is an explanatory view for explaining the operating state of the back seat, and FIG. 6 is an explanatory view for explaining the operating state of the leg sheet.

The electric simple folding bed according to the present invention has an upper bed frame 11, a middle bed frame 12, and a lower bed frame 13, as shown in FIGS. Although not shown, the bed frames 11, 12, and 13 are connected to each other via pins or hinges so as to be rotatable with each other, and are configured to bend. It may be configured such that only the middle is bent in the middle.

In any case, these bed frames 11, 12, and 13 can be folded, and when extended, are supported by stands 14, 15 and support legs 17a and 17b with casters.

The stands 14 and 15 are composed of cylindrical lower parts 14a and 15a and horizontal brackets 14b and 15b, and the middle bed frame 12 is connected to the brackets 14b and 15b.

A back seat 1, a waist seat 2, and a leg seat 3 are laid on the upper portions of the respective bed frames 11, 12, and 13, respectively. These sheets have such a hardness that they can bend or bend under a certain force.

The upper bed frame 11 is provided internally with a drive unit 20 including a reversible motor and a mechanism (both not shown) for converting the rotational motion of the reversible motor into a reciprocating motion. A movable rod 21 protrudes from the part 20 so as to advance and retreat in the axial direction (forward and backward) by the reciprocating motion converting mechanism.

A moving shaft 221 is provided at the tip of the movable rod 21 so as to protrude in a direction perpendicular to the axis, and the rotating arm 10 is mounted via the moving shaft 221. That is, the rotary arm 10 is composed of a pair of links provided so as to sandwich the movable rod 21, and includes a lower part 103 protruding horizontally and an upper part 102 protruding upward from the lower part 103. The lower shaft 103 is formed with a slot 101 in which the driving shaft 221 is slidably provided, and the upper shaft 102 is provided with an upper lifting member 104 for lifting the back seat 1 upward, extending in a direction perpendicular to the axis (lateral direction). It is provided so that Therefore, when the dynamic shaft 221 moves toward the base end side (drive unit side) of the slot 101 and is pressed, the upper part 102 is inclined upward and the lower part 103 is inclined downward.

A wire connecting portion 22 described later in detail is also attached to the driving shaft 221, and the wire connecting portion 22 is also slidable in the slot 101.

The middle bed frame 12 has a support frame 121 fixed so as to extend in the left-right direction in the vicinity of the upper bed frame 11, and pulleys 124, 125 are respectively turned on both left and right ends of the support frame 121. Movably mounted. Further, as shown in FIG. 3, the middle bed frame 12 has a bracket 161 that is suspended downward near the stands 14 and 15. The end of the horizontal shaft 16 is connected to the bracket 161, and the horizontal shaft 16 is provided so as to connect the tops of the stands with casters 30 and 40.

Therefore, when the stands 14 and 15 stand, the middle bed frame 12 is raised through the bracket 161.

Below the lower bed frame 13, a lower push-up member 130 is provided on a plate 131 attached to the leg sheet 3, but in some cases, the leg sheet 3 is formed only by the lower push-up member 130. This plate 131 is not necessarily required because it can be raised.

In particular, in the present embodiment, a center still wire 25 is stretched between the wire connecting portion 22 and the lower push-up member 130, and the wire connecting portion 22 and the stands with casters 30, 40 are provided. The right and left still wires 23 and 24 are stretched between the projecting members 31 and 41 attached to the lower surface of the camera.

The center still wire 25 is attached so as to directly connect the wire connecting portion 22 and the lower push-up member 130, and the right and left still wires 23 and 24 are connected to the wire connecting portion 22. After being extended through wheels 122, 123 rotatably mounted inside the upper bed frame 11 and pulleys 124, 125 of the support frame 121, the stands 30, 40 with casters are substantially extended. It is connected to a protruding member 41 provided on the intermediate lower surface side.

The stands 30 and 40 with casters have a spring member 42 stretched between them and the lower bed frame 13 and are constantly urged upward.

Next, the operation of the above embodiment will be described.

First, after the upper, middle, and lower bed frames 11, 12, and 13 are extended to be in a horizontal state, the switch of the reversible motor of the drive unit 20 is turned on the “up” side, and the movable rod 21 It moves toward the inside (front side, left side in FIG. 3) of the drive section 20, and the wire connecting section 22 attached to the front end pulls the intermediate still wire 25.

This pulling causes the lower push-up member 130 to tilt. This causes the leg sheet 3 to be pushed upward by the lower push-up member 130.

In this case, the moving shaft 221 of the wire connecting portion 22 is located at the front end (left end in FIG. 4) of the slot 101 of the rotating arm 10, and the moving shaft 221 is Since the lower portion is pressurized, as is apparent from the shape of the rotating arm 10, the rotating arm 10 is displaced upward so that the upper portion 102 is in an upright state, and pushes up the back seat 1. The lower portion 103 of the rotary arm 10 is inclined slightly backward, the slot 101 presses the wire connecting portion 22 and the drive shaft 221, and the push-up member 104 of the rotary arm 10 holds the back seat 1 in the standing position. (See FIG. 5).

Next, when the switch of the reversible motor of the drive unit 20 is turned to the “down” side, the reversible motor rotates in the reverse direction, and the movable rod 21 moves outward (rear side, FIG. Moves toward the right side), the wire connecting portion 22 attached to the front end loosens the intermediate still wire 25, and the wire connecting portion 22 and the driving shaft 221 move to the rear end of the slot 101 of the rotary arm 10.

As a result, the upper portion 102 of the rotating arm 10 gradually descends, and the back seat 1 and the leg seat 3 return to a horizontal state.

Further, if the rotation of the reversible motor is continued, the movable rod 21 moves further rearward, and the wire connecting portion 22 moves to the end of the slot 101 together with the moving shaft 221. As a result, the left and right wires 23 and 24 are under tension, pull the projecting members 31 and 41 of the left and right caster stands 30 and 40 against the spring 42, and move the caster stands 30 and 40 to the bracket 161. Stand upright. As a result, the suspended bed frame 12 is pushed upward, the waist sheet 2 is also raised, and the user's waist receives a comfortable pressing feeling.

In order to return the lumbar seat 2 to the horizontal position, the reversible motor of the drive unit 20 may be rotated again in the reverse direction.

It is to be understood that the above description of the embodiments describes more limited typical examples of the present invention, and which will be easily understood by those skilled in the art without departing from the scope of the claims for utility model registration. Can be changed.

[0039]

[Effect of the invention]

 As described above, the electric simple folding bed according to the present invention easily adjusts the inclination angles of the back seat, the waist seat, and the leg seats, and also raises the waist seats, thereby giving a comfortable feeling to a bedridden person. .

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing an embodiment of the present invention.

FIG. 2 is a side view of the embodiment.

FIG. 3 is a schematic perspective view showing a relationship between a bed frame and a folding mechanism according to the embodiment.

FIG. 4 is an explanatory diagram illustrating an operation of the rotary arm according to the embodiment.

FIG. 5 is an explanatory diagram illustrating an operation state of a back seat.

FIG. 6 is an explanatory diagram illustrating an operation state of a leg sheet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Back seat, 2 ... Waist seat, 3 ... Leg seat, 10 ... Rotating arm, 101 ... Slot, 130 ... Lower push-up member, 11, 12, 13 ... Bed frame, 122, 123, 124, 125 ... Pulley, 14, 15, 17a, 17b stand, 20 drive section, 21 movable rod, 22 wire connection section, 221 drive shaft, 23, 24 left and right wire, 25 intermediate wire, 30, 40 caster stand , 42 ... Spring.

Claims (2)

[Utility model registration claims] 1. supported by stands (14, 15, 17a, 17b),
Back seat (1), waist seat (2) and leg seat at the top
(3) foldable bed frame (11,12,13) consisting of upper, middle and lower tiers to be laid, and provided at predetermined positions of the bed frame (11,12,13);
A drive unit (20) configured to convert the rotational force of the motor into a front-rear drive of one movable rod (21); and a dynamic shaft (221) provided at the tip of the movable rod (21).
And the slot (101) in which the dynamic shaft (221) is slidably fitted.
Is formed in the lower part (103), and the upper part (102) is
A rotating arm (10) provided with an upper push-up member (104) for pushing up (1), one end of each of which is connected to the tip of the movable rod (21), and one other end at the center is the leg The other two are connected via a pulley (122,123,124,125) provided on both sides of the bed frame (11,12,13). The waist seat (2)
Connected to a pair of left and right caster stands (30, 40), which are located below and are always biased upward by a spring (42).
When the movable rod (21) is pulled by driving the motor with the wires (25, 23, 24), the central wire (25) tilts the leg sheet (3) upward and downwards. Displacing the push-up member (130), and the rotating arm (10) is tilted so that at least the upper portion (102) of the rotating arm (10) pushes up the back seat (1), When the movable rod (21) is projected by the driving of the motor, the central wire (25) relaxes so that the back seat (1) and the leg seat (3) return to a horizontal state, and When the rod (21) is protruded, the driving shaft (221) moves to the rear end of the slot (101), and the left and right wires (23, 24) have a pair of left and right casters against the spring (42). Stand up (30,40),
An electric simple folding bed wherein the lumbar seat (2) is raised. 2. One end of each of the left and right wires (23, 24) and the center wire (25) is connected to one wire connecting portion (22) connected to the driving shaft (221). The electric simple folding bed according to claim 1.