JP6225307B1 - Electric reclining bed - Google Patents

Abstract

PROBLEM TO BE SOLVED: A conventional electric bed structure has a problem that a bed frame and a reclining frame are connected by a fixed rod, so that there is a limit in operation of the reclining frame, causing back misalignment, compression, etc. It was. SOLUTION: Two rotating portions (16, 17) arranged on a trunk side frame 5 via a plate-like member 7 in two guide paths, a pair of first guide paths 10 and a pair of second guide paths 13. Are fitted, and focusing on the mechanism in which the trunk side frame 5 rotates in stages around two predetermined set points 20 and 21, completely eliminates misalignment, pressure, discomfort, etc. An electric reclining bed characterized by the provision of a comfortable bed life. [Selection] Figure 5

Description

  The present invention relates to an electric reclining bed.

  FIG. 9 and FIG. 10 show a conventional example and an electric bed reclining interlocking device (see Utility Model Registration No. 3165061). As shown in FIGS. 9 and 10, when the drive frame telescopic rod of the bed frame contracts, the reclining frame abuts above the fixed rod support block in the bed frame and is positioned above the drive device.

  At this time, the fixing pin of the bending arm in the reclining frame is positioned at the rear end of the slide groove of the fixing rod in the bed frame. When the telescopic rod of the drive device is extended, the telescopic rod presses the pressed portion of the reclining frame. At this time, the rear stage of the reclining frame moves upward because it is pulled by the connecting rod 140. At the same time, the roller of the fixed pin in the curved arm slides in the direction of the second pivot hole in the slide groove of the fixed rod in the bed frame.

As a result of the above-described operation, the reclining frame tilts upward, and when tilting upward, the reclining frame tilts while moving upward by the same distance as the roller of the fixed pin slides on the slide groove of the fixed rod in the bed frame. .
Thereby, it can prevent that a user's abdominal part is pressed, and can improve the comfort at the time of adjusting the inclination-angle of a reclining frame. Furthermore, since the roller is combined with the fixing pin, it slides smoothly.

  The reclining interlocking structure of this electric bed can prevent the user's abdomen from being pressed and the clothes on the back of the user from being pressed against the mattress, and can provide comfort when adjusting the tilt angle of the reclining frame. It was something that could be raised.

Utility model registration No. 3165061

  However, the above-described conventional electric bed structure has the following drawbacks. In the reclining frame, since the connecting rod 140 is connected to the fixed rod in the bed frame at the fulcrum 140a, when the inclination angle of the reclining frame is adjusted, the operation of the back side of the reclining frame swings, and the user is somewhat affected. There are problems that cause back misalignment, pressure, and uncomfortable back. At the same time, while the user (patient, elderly person, cared person, etc.) repeats the supine position and sitting position on the bed, the position shift in the foot direction occurs, and to the caregiver and family to restore it Of heavy labor.

  The present invention is a conventional electric reclining bed, and some back misalignments and pressures that occur when the user (patient, elderly person, cared person) gets up on the bed, uncomfortable back, and supine on the bed. The purpose is to eliminate heavy labor for caregivers and families to restore the position shift in the foot direction that occurs while repeating the position and sitting position.

The present invention includes a main frame having a foot side portion that is a foot side and a torso side portion that is adjacent to the foot side portion and is a torso side;
A foot side frame arranged on top of the foot side part;
A trunk side frame disposed on the upper surface of the trunk side portion, a sub-frame located below the main frame, a driving force transmitting means for transmitting the driving force of the driving portion and the driving portion to the trunk side frame, and a driving portion; An electric reclining bed having a drive operation unit to be operated,
The main frame has a pair of main longitudinal members at both ends in the width direction intersecting the longitudinal direction, the sub frame has a pair of sub longitudinal members along the pair of main longitudinal members,
The torso side frame has a pair of first extending portions extending in the foot side direction along the back surface on the back surface of the end portion on the foot side frame side and a pair extending obliquely downward with respect to the pair of first extending portions. And a pair of plate-like members positioned along the pair of main longitudinal members,
The pair of main longitudinal members respectively hold a pair of first guide paths that are curved in an upward concave shape and have a path from the first guide start point to the first guide end point,
The pair of sub-longitudinal members are curved in an upward concave shape, have a path from the second guidance start point to the second guidance end point ahead of the first guidance end point, and extend to the main longitudinal member longer than the first guidance path. A pair of first guide start points and a pair of second guide start points are positioned on the foot side frame side in the longitudinal direction, and the pair of first guide end points and the pair of second guide end points are in the longitudinal direction. Located on the side of the trunk side frame,
The pair of first extending portions respectively support a pair of first rotating portions that are fitted and rotated in the pair of first guiding paths, and the pair of second extending portions are respectively connected to the pair of second guiding paths. A pair of second rotating portions that are respectively inserted and rotated are supported.

The drive unit is arranged on at least one plate-like member, and rotates a pair of second rotating units connected by a connecting shaft arranged in the width direction so as to move along the second guide path. And

  In a conventional electric reclining bed, a user (patient, elderly person, cared person, etc.) moves from the supine position to the sitting position in the process of supine position on the bed. There was a sense of incongruity in the back. In the present invention, it is possible to provide a comfortable bed life that does not cause such back misalignment, compression, and uncomfortable feeling at the back.

  Further, the position shift in the foot direction which has occurred in the past while repeating the supine position and the sitting position on the bed is completely eliminated, and it is freed from heavy labor for caregivers and families for restoration.

  Furthermore, the purpose of this is to raise the knee to prevent the shift of the posture in the foot direction that has conventionally occurred while the user repeats the movement from the supine position to the sitting position on the bed. The drive device (so-called three motors) installed on the foot side frame eliminates the need for installation and contributes to cost reduction. In addition, since the drive unit is integrated and the trunk side frame is self-propelled, it is extremely compact and leads to a reduction in the number of members.

  In addition, the present invention has an advantage that the body side frame of the electric reclining bed can be designed to move freely like a released bird, so that it can be designed to meet the individual needs of medical institutions and welfare facilities. This makes it possible to produce a custom-made electric reclining bed.

It is a side view which shows the structure of the electrically driven reclining bed by one Embodiment of this invention. It is a side view of the trunk | frame side frame of the electrically driven reclining bed by one Embodiment of this invention. It is a fragmentary sectional view of the width direction by AA of the electrically driven reclining bed by one Embodiment of this invention. It is an expanded view of the side surface of the trunk | drum side frame and a guide path of the electrically driven reclining bed by one Embodiment of this invention. It is the side view which showed the position of the drive part of the electrically driven reclining bed by one Embodiment of this invention. It is the fragmentary sectional view of the width direction by AA by which the drive part was distribute | arranged to the trunk | drum side frame of the modification of the electrically driven reclining bed by one Embodiment of this invention. It is a side view of the plate-shaped member of the modification of the electric reclining bed by one Embodiment of this invention. It is a fragmentary perspective view of the induction path of the modification of the electrically driven reclining bed by one Embodiment of this invention. It is an end view of the guideway of the modification of the electrically driven reclining bed by one Embodiment of this invention. It is a side view of the plate-shaped member by which the drive part and rotation support plate of the modification of the electrically driven reclining bed by one Embodiment of this invention were distribute | arranged. FIG. 10 is a side view of the electric reclining bed according to the embodiment of the present invention, corresponding to a modification of the guide path, as viewed from an arrow A in FIG. 9 in which a rotation support plate is arranged on a plate member. It is a side view which shows a mode that the part which is a subject of a reclining frame is connected with the fixed pin in the conventional bed.

  See FIG. In the present invention, a main frame 1 having a foot side 2 that is the foot side and a torso side portion 3 that is adjacent to the foot side 2 and the upper surface of the foot side 2 is disposed. The foot side frame 4, the torso side frame 5 disposed on the upper surface of the torso side portion 3, and the sub frame 6 that serves to support the second guide path 13 positioned below the main frame 1 are provided. It is an electric reclining bed.

  See FIG. The main frame 1 has a pair of main longitudinal members 1P at both ends in the width direction that forms a frame shape and intersects the longitudinal direction, and the subframe 6 has a pair of sub longitudinal members 6P along the pair of main longitudinal members 1P. have.

  See FIG. 2 and FIG. The torso side frame 5 has a pair of first extending portions 8 extending in the foot side direction along the back surface on the back surface of the end portion on the foot side frame 4 side and a diagonally downward direction with respect to the pair of first extending portions 8 A pair of plate-like members 7 having a pair of second extending portions 9 extending to the side are arranged, and the pair of plate-like members 7 are paired with a pair of main longitudinal members 1P in the width direction. The first guide path 10 is disposed at a further inner position.

  See FIG. The pair of plate-like members 7 disposed on the trunk side frame 5 is formed with a pair of first extending portions 8 and a pair of second extending portions 9. There is a cut 30 to avoid contact with the foot side frame 4 when the frame 5 rotates.

  See FIG. The pair of first extending portions 8 is provided with a pair of movable rods 161 supported by the shafts 31, and the pair of second rotating portions 17 of the pair of second extending portions 9 passes through the through hole 24 in the width direction. A pair of fourth gears 171 connected to both ends of the connecting shaft 18 arranged in the above are arranged.

See FIG. The shape and dimensions of the pair of plate-like members 7 will be described. The pair of first extending portions 8 is located at a position extended approximately 15 cm from the torso frame 5 toward the foot side, and is provided with a pair of movable wheels 161. The pair of second extending portions 9 is a pair of first extending portions. Angle a within 20 degrees with respect to the perpendicular of the position of the pair of movable wheels 161 obliquely below the portion 8
The pair of fourth gears 171 are arranged at both ends of the connecting shaft 18 disposed in the width direction passing through the through hole 24.

  The angle with respect to the position of the pair of fourth gears 171 with respect to the perpendicular of the position of the pair of movable wheels 161 described in the previous section is determined by the relationship with the setting of the raising angle of the trunk side frame 5. Further, the vertical distance between the pair of movable wheels 161 and the pair of fourth gears 171 is the relationship between the set height of the bed floor and the height (about 10 cm) of the caster of the insertion table of the accessory. However, if the strength to support the trunk side frame 5 can be secured, this dimension is not concerned.

  See FIG. 1 and FIG. Inside the pair of main longitudinal members 1P in the width direction, a pair of first guide paths having a C-shaped cross section, curved in an upward concave shape and having a path from the first guide start point 11 to the first guide end point 12 10 is held.

  See FIG. On the inner side in the width direction of the pair of sub-longitudinal members 6P, there is a C-shaped cross section, curved in an upward concave shape, and a path from the second guide start point 14 to the second guide end point 15 ahead of the first guide end point 12 The second guide start point 14 of the pair of second guide paths 13 that is longer than the first guide path 10 and extends to the main longitudinal member 1P is held.

  The pair of first guide start points 11 and the pair of second guide start points 14 are located on the foot side frame 4 side in the longitudinal direction, and the pair of first guide end points 12 and the pair of second guide end points 15 are trunks in the longitudinal direction. It is located on the side frame 5 side. Further, the pair of second guide paths 13 has a toothed belt 23 (see FIG. 3) disposed therein.

  See FIG. The pair of first extending portions 8 respectively support a pair of movable rods 161 that are inserted into the pair of first guide paths 10 and rotate by the shafts 31, and the pair of second extending portions 9 are formed in the through holes 24. A pair of fourth gears 171 that are fitted in the pair of second guide paths 13 and rotated are respectively supported by the connecting shafts 18 that pass through the shafts.

  See FIG. The cylindrical main body 191 of the drive unit 19 has an expansion / contraction function in which the rod-shaped movable unit 192 projects and enters the cylindrical interior, and the proximal end support member 1911 of the drive unit 19 is on the trunk side of the pair of sub-longitudinal members 6P. It is supported by a support shaft 29 penetrating the base end support member 1911 in the width direction at the center position.

See FIG. The rod-shaped movable part 192 of the drive unit cylindrical main body 191 is joined to the mating part 511 of the mating member 51 provided at the center in the width direction of the back surface of the trunk side frame 5 by the tip system mating member 1921.
The driving force of the driving unit 19 is such that the rod-like movable unit 192 protrudes from the driving unit cylindrical main body 191 by the operation of the driving operation unit 193 provided systematically in the driving unit cylindrical main body 191, and from the distal end system combining member 1921. It is transmitted to the mating part 511 arranged on the back surface of the trunk side frame 5.

  As described above, the angle of the trunk side frame 5 is increased from the horizontal state, and the pair of movable rods 161 arranged on the side of the trunk side frame 5 is connected to the first guide start point of the pair of first guide paths 10 fitted. 11, the pair of fourth gears 171 simultaneously rotate in the direction from the second guide start point 14 to the second guide end point 15 of the pair of second guide paths 13 fitted. An electric reclining bed that has a function of moving and rotating to a raising angle (sitting position) (see FIG. 4) without causing any back misalignment, compression, or uncomfortable feeling at the back.

  The essence of the present invention lies in a mechanism in which a pair of movable rods 161 are fitted and moved along a pair of first guide paths 10 and a pair of fourth gears 171 are fitted and moved along a pair of second guide paths 13. A procedure for deriving and securing the guiding shapes of the pair of first guiding paths 10 and the pair of second guiding paths 13 that operate the trunk side frame 5 without causing any back misalignment, pressure, discomfort, etc. , I will explain step by step from the next section.

  See FIG. 1 below. First, a predetermined first set point 20 and a predetermined second set point 21 are set.

  The predetermined first set point 20 is a position approximately 7 cm closer to the foot side than the boundary between the foot side frame 4 and the torso side frame 5 and is located on the upper surface of the foot side frame 4 and the mat 28 laid on the upper surface thereof.

  The predetermined second set point 21 is positioned approximately 3 cm closer to the body side than the predetermined first set point 20 and approximately 12 cm above the upper surface of the mat 28.

  The above is based on the average physique of Japanese men, and as far as the lumbar skeleton of the human body is concerned, the difference in dimensions seems not to be significantly affected by the optimal trajectory of the torso frame 5 Some adjustment may be made depending on the condition setting.

  See FIG. 4 below. The trunk side frame 5 on which a pair of plate-like members 7 having the shape and dimensions described in the section “0021” are arranged is connected to the predetermined first set point 20 described in the sections “0032” and “0033”. The rotation is sequentially performed around the determined second set point 21.

  First, after the trunk side frame 5 is rotated from the horizontal state to an angle of approximately 40 degrees around the predetermined first set point 20, the center point of rotation is shifted to a predetermined second set point 21. Then, it is rotated to an angle of approximately 70 degrees, which is the raising angle (sitting position). In addition, the raising angle of the sitting position is left to each manufacturer's assumption.

  The trajectory drawn by the pair of first rotating portions 16 and the pair of second rotating portions 17 is secured by the rotation of the trunk side frame 5 described in the previous section.

  When the trunk side frame 5 is in the horizontal state 5-0, the pair of first rotating parts 16 are at the first guiding start point 11 of the pair of first guiding paths 10, and the pair of second rotating parts 17 are The second guide start point 14 of the pair of second guide paths 13 is located.

  When the trunk side frame 5 is rotated from the horizontal state to 5-1 around the first set point 20 with the center point of rotation set in advance, the pair of first rotating parts 16 is paired with the pair of first guides. The pair of second rotating portions 17 is located at the position of 13R1 of the pair of second guide paths 13 at the position of 10R1 of the path 10.

  When the trunk side frame 5 is continuously rotated to 5-2 (rotation point angle is approximately 40 degrees), the pair of first rotating portions 16 are at the position 10-S of the pair of first guide paths 10. The pair of second rotating portions 17 is located at the position 13-S of the pair of second guide paths 13.

  At this time, when the center point of the rotation is shifted to the predetermined second set point 21 and the trunk side frame 5 is rotated to 5-3, the pair of first rotating portions 16 is paired with the pair of first The pair of second rotating portions 17 is located at the position 13R2 of the pair of second guiding paths 13 at the position 10R2 of the guiding path 10.

  When the trunk side frame 5 is rotated to a rising angle (sitting position) of approximately 70 degrees 5-4, the pair of first rotating portions 16 are positioned at the first guiding end point 12 of the pair of first guiding paths 10. Thus, the pair of second rotating portions 17 is positioned at the second guidance end point 15 of the pair of second guidance paths 13.

  Note that the respective guide curves obtained from “0036” to “0042” correspond to the pair of first guide paths 10 and the pair of second guide paths 13, respectively, and the respective guide start points are the pair of main longitudinal members 1P and , Each of which is arranged on the pair of sub-longitudinal members 6P. However, when the respective guidance end points do not reach the pair of main longitudinal members 1P, the rotation angle is rotated even after reaching the rising angle (sitting position) of approximately 70 degrees. To secure a guide curve and secure the required guide path length to reach each of the pair of main longitudinal members 1P.

  See FIG. 6 and FIG. The driving force of the drive unit 19 according to claim 2 is such that the electric motor 22 is arranged on at least one plate-like member 7, and the first operation of the electric motor 22 is performed by the operation of the drive operation unit 193 provided systematically with the electric motor 22. The rotational force of the gear 25 is transmitted through the second gear 26 to the third gear 27 located below the drive unit 19 in the width direction of the connecting shaft 18.

  The rotational force transmitted to the third gear 27 rotates the pair of fourth gears 171 connected by the connecting shaft 18, so that the second guide starts from the second guide start point 14 of the paired second guide path 13. The pair of movable rods 161 rotate in the direction of the end point 15 and rotate in conjunction with the direction from the first guide start point 11 to the first guide end point 12 of the pair of first guide paths 10 fitted. (See Figure 4.)

  The body side frame 5 is an electric reclining bed having a function of rotating and moving from the horizontal state to the raising angle (sitting position) without causing any back misalignment, compression, uncomfortable feeling of the back portion, etc. by the above operation.

See FIGS. 8 and 8-1. As a modified example, the shape of the guide path is a pair of first guide paths 10 having a T-shaped cross section, and the pair of second guide paths 13 having a T-shaped cross section and an upward tooth pattern band 23. It has. Moreover, the tip part which contact | wins a T-shaped leg is provided with the cap-shaped protrusion up and down so that a pair of 1st rotation part 16 and a pair of 2nd rotation part 17 may not remove | deviate a wheel.
In either case, the trajectory shape of the taxiway does not change.

  See FIGS. 9 and 9-1. When the guide path having the T-shaped cross section of the previous item is selected, in addition to the movable rod 161 fitted in the shaft 31, the first rotating portion of the plate-like member 7 is between the movable rod 161 and A rotation support plate 36 in which an auxiliary wheel 35 is disposed is fitted, and a rotation support in which the auxiliary wheel 35 is disposed between the through hole and the fourth gear 171 connected to the connecting shaft 18 is fitted in the second rotating portion. It is necessary to fit the plate 36. The rotation support plate 36 provided with the auxiliary wheel 35 has an angle with the guide path when each of the first and second rotating parts moves along the first and second guide paths each having a T-shaped cross section. In response to this change, it is always in contact with a right angle and has the effect of moving smoothly without resistance.

  In summary, the guide trajectory curves of the first guide path 10 and the second guide path 13 are the shape and dimensions of the plate member 7, the predetermined first set point 20 and the predetermined second setting. The point 21 changes in various ways depending on the setting conditions. On the contrary, the change can be designed to respond to the effects required by the manufacturer. Ultimately, it also responds to individual user requests. It can be done.

  In order to make the most effective use of the present invention, a material having elasticity is applied to the center portion of the mat 28, in particular, the portion that contacts the waist of the human body (the boundary portion between the foot side frame and the torso side frame). It is necessary to introduce.

See FIG. This figure shows the structure of a conventional electric reclining bed in which the user experienced back misalignment, pressure, discomfort, etc. during the operation from the supine position to the sitting position on the bed. FIG.

Main frame 1
Foot side 2
Torso side 3
Foot side frame 4
Body side frame 5
Subframe 6
Main longitudinal member 1P
Sub-longitudinal member 6P
Plate member 7
First extension 8
Second extension part 9
First taxiway 10
First guidance start point 11
The first induction end point 12
Second taxiway 13
Second guidance start point 14
The second induction end point 15
1st rotation part 16
Movable wheel 161
Second rotating part 17
Fourth gear 171
Connecting shaft 18
Drive unit 19
Predetermined first set point 20
Predetermined second set point 21
Electric motor 22
Dental band 23
Through hole 24
First gear 25
Second gear 26
Third gear 27
Matt 28
Support shaft 29
Cut 30
Shaft 31
Driving force transmission means 32
First taxiway 33 with a T-shaped cross section
Second taxiway 34 with T-shaped cross section
Auxiliary wheel 35
Rotating support plate 36
Joint member 51
Drive device 119
Drive unit cylindrical body 191
Rod-shaped movable part 192
Drive operation unit 193
Connecting rod 140
Fixing pin 140a

Claims (2)

A main frame having a body side that is a body-side adjacent to the foot side and the foot side is the foot end,
A foot side frame disposed on top of the foot side portion;
A trunk side frame disposed on the upper surface of the trunk side portion;
A subframe located below the mainframe;
A drive unit;
Driving force transmission means for transmitting the driving force of the driving unit to the trunk side frame;
An electric reclining bed having a drive operation unit for operating the drive unit,
The main frame has a pair of main longitudinal members at both ends in the width direction intersecting the longitudinal direction, and the sub frame has a pair of sub longitudinal members along the pair of main longitudinal members,
The cylinder-side frame, a rear surface of the end on the side of the foot side frame, an obliquely downward direction with respect to the first elongated portion of the pair extending to the foot side along the rear surface and a pair of the first elongated portion And a pair of plate-like members respectively positioned along the pair of main longitudinal members.
The pair of main elongate members respectively hold a pair of first guide paths that are curved in an upward concave shape and have a path from the first guide start point to the first guide end point,
The pair of sub-longitudinal members are curved in an upward concave shape and have a path from the second guidance start point to the second guidance end point ahead of the first guidance end point and extend longer than the first guidance path to the main longitudinal member. Holding a pair of second taxiways ,
The pair of first guide start points and the pair of second guide start points are located on the foot side frame side in the longitudinal direction, and the pair of first guide end points and the pair of second guide end points are in the longitudinal direction. Located on the side of the torso frame,
The pair of first extending portions respectively support a pair of first rotating portions that are fitted in the pair of first guide paths and rotate, and the pair of second extending portions are respectively paired with the first An electric reclining bed characterized by supporting a pair of second rotating portions that are respectively fitted and rotated in two guide paths. The drive unit is disposed on at least one of the plate-like members, rotates a pair of the second rotation units connected by a connection shaft arranged in the width direction, and moves along the second guide path. The electric reclining bed according to claim 1, wherein the electric reclining bed is moved.

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