JPH061006Y2 - Bed equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a bed apparatus in which the height of a frame on which bedding such as a mattress is placed can be arbitrarily adjusted.

(Prior Art) Among bed devices used as an examination table, a treatment table, and the like, one in which the height of a frame on which the bedding is placed at the time of examination or treatment is adjustable is widely used.

The adjusting function for adjusting the height of the frame has various structures. For example, the applicant of the present application is Japanese Patent Application No. 59-238.
As shown in Japanese Patent Application Laid-Open No. 61-115508, there is a typical one provided with telescopic legs.

This is because the fixed columns provided on the head side and the foot side of the frame on which bedding such as a mattress is placed are provided with telescopic columns that can extend and contract in the vertical direction, and screw rods are provided in parallel with the fixed columns. A movable member that moves up and down by the rotation of the rod is provided, the movable member and the telescopic support are connected by a connecting cable, and the head-side and foot-side screw rods are interlocked by a connecting shaft so that they are simultaneously moved up and down. It is composed. Therefore, according to this bed apparatus, there is an effect that the lower space portion of the frame can be widely and effectively utilized.

(Problems to be solved by the invention) However, according to the bed apparatus having the above configuration, the weight of the frame, the weight of the mattress placed on the frame, the weight of the user lying on the mattress, and the like are the same. It will always be applied as tension to the connecting rope. When this bed apparatus is used for a long period of time, the relatively large tension is applied for a long period of time, so that the connecting rope is stretched, which causes a problem in durability. In addition, when the user is positioned particularly long on one side in the width direction of the bed apparatus and the connecting line on one side in the width direction is applied with a greater tension than the connecting line on the other side, a connecting line to which a greater tension is applied is applied. There is a case where the extension becomes larger than that of the connecting rope on the other side, and the lengths of the connecting ropes on the left and right are different from each other. In such a case, the extension degree of the telescopic columns from the left and right fixed columns differs depending on the left and right, which causes a problem that the frame tilts in the width direction.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a bed apparatus in which the height of the frame can be adjusted by simultaneously expanding and contracting the expansion columns of the head side and the foot side. .

Another object of the present invention is to provide a bed apparatus in which the height of the frame can be adjusted smoothly so that the telescopic column can be reliably and smoothly expanded and contracted.

Still another object is to provide a bed apparatus having excellent durability.

(Means and Actions for Solving the Problem) In order to achieve the above-mentioned object, the present invention provides fixed columns on the head side and foot side of the frame, and the fixed columns on the head side and foot side are respectively composed of upper and lower horizontal rail members. The screw rods are provided on the head side and the foot side in parallel with each other, and the handle for imparting a rotational force to at least one of the head side and the foot side screw rods is provided, and the screw rods are connected to the fixed columns. The support column is provided with a telescopic column that can be expanded and contracted in the vertical direction, and the telescopic column is connected at the head side and the foot side with a horizontal rod portion, and this horizontal rod portion is provided with a screw portion that is screwed with the screw rod. A gas spring for biasing the telescopic column in the extension direction with respect to the fixed column is provided in the telescopic column, and a pair of first first and second lateral crosspiece members on the bed side and the foot side, respectively. And a pair of second guide bodies are respectively provided on the lower horizontal rail members, both ends of the cord body are attached to the respective lateral rods, and the middle portions are used as the first and second guide bodies. The screw rods on the head side and the foot side are engaged with each other and connected by a connecting shaft so that they can be moved up and down at the same time. Therefore, by rotating the handle that is the drive source, the screw rod on one side is rotated, and the horizontal rod portion provided with the screw portion screwed to this screw rod is moved up and down with respect to the screw rod. The telescopic column connected to the section is vertically expanded and contracted with respect to the fixed column.

When the screw rod on one side is rotated, the connecting shaft connected to this screw rod rotates, and the screw rod on the other side is rotated. Stretch to.
Further, since the telescopic column is urged by the gas spring in the direction in which the telescopic column is always extended with respect to the fixed column, it is possible to extend the telescopic column with a relatively small effort. Furthermore, since the pair of cords attached to the horizontal rods that connect the telescopic columns are kept at the same length, the horizontal rods are always kept horizontal, and the telescopic columns are vertical without tilting with respect to the fixed columns. It is held by and smoothly expands and contracts in the vertical direction.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 1 in the figure denotes a frame on which bedding such as a mattress is placed. On the head side of this frame 1 is a headboard body 2
However, on the foot side, the footboard body 3 is attached to the frame 1
, And the connecting tools 5 and 5 provided on the headboard body 2 and the connecting tools 6 and 6 provided on the footboard body 3, respectively. It is detachably provided by connecting with 7 ... and the nut 8 screwed together. The footboard body 3 is constructed as shown in FIGS. 3 to 6.
That is, the footboard body 3 is provided with fixed columns 9, 9 on both left and right sides of the footboard body 3, and the fixed columns 9, 9 are provided with an upper horizontal rail member 10 in the shape of a rectangular tube and a lower horizontal member having a U-shaped cross section. The bearings 12a and 12b connected by the crosspiece member 11 and attached to the central portion of the upper horizontal crosspiece member 10, and the bearing 13 attached to the central portion of the lower horizontal crosspiece member 11, the bearing 12b and the bearing 13 A handle 1 rotatably rotatably supporting the vicinity of both ends of a screw rod 14 provided therebetween, and an upper end portion of the screw rod 14 rotatably provided on an upper end portion of the upper horizontal rail member 10.
The first bevel gear 1 is connected to the first bevel gear 1 with the lower end positioned inside the gear box 16 provided at the lower part of the lower crosspiece member 11.
7 is fitted.

The fixed column 9 has a U-shaped cross section, and a guide metal fitting 18 having a U-shaped cross section is provided at the lower end portion thereof. 19 is inserted, and the expansion and contraction columns 19 and 19 are provided in the fixed columns 9 and 9 so as to be vertically expandable and contractible. The telescopic columns 19 and 19 project downward from the lower ends of the fixed columns 9 and 9. The casters 20, 2 are attached to the lower ends of the telescopic columns 19, 19.
Wearing 0. Furthermore, gas springs 21 and 21 are provided in the telescopic columns 19 and 19. The main body 22 of the gas spring 21 is inserted into the telescopic column 19 from above so that the lower end portion of the main body 22 is extended by the pin 23.
9, the upper end is fixed to the telescopic support 19 by the metal fitting 24, and the tip of the rod 25 drawn out upward from the main body 22 is attached to the position above the fixed support 9 together with the spacer 26 by the pin 27. There is. A pair of L metal fittings 28, 28 are attached to the lower portion of the upper horizontal rail member 10 at positions symmetrical with respect to the screw rod 14 so that the front and rear surfaces of the L metal fittings 28, 28 are opposite in direction to each other. The pair of first pulleys 2 serving as the first guide bodies 29, 29 on the metal fittings 28, 28.
9 and 29 are rotatably provided with their directions reversed.

Further, the second guide body 3 is provided on the upper side of the lower horizontal rail member 11 at a symmetrical position close to the fixed support columns 9, 9.
A pair of second pulleys 30 and 30 as 0 and 30 are rotatably provided. Furthermore, the upper and lower sides of the telescopic columns 19 are connected by a horizontal rod portion 31. A screw part 3 to be screwed with the screw rod 14 at the central part of the horizontal rod part 31.
2 is provided, and the horizontal rod portion 31 is formed so as to be vertically movable with respect to the screw rod 14. Further, the horizontal rod portion 31 has a left-right symmetrical position in the vicinity of the screw portion 32 and a surface of the horizontal rod portion 31. One bolt on the top and one on the back
3, 33 are provided with one end side thereof fixedly attached, and are located at symmetrical positions of the horizontal rod portion 31 close to the fixed columns 9, 9 on the front surface and the rear surface of the horizontal rod portion 31 in the vertical direction. A rectangular parallelepiped receiving portion 35 provided with through holes 34, 34,
One 35 is fixed to each. Then, loops 37, 37 are formed on one end side of each of the pair of wires 36, 36 as the cord body 36, and the loops 37, 37 are provided with a pair of bolts 33 provided on the horizontal rod portions 31, 31.
One end side of the pair of wires 36, 36 is attached to the horizontal rod portion 31 by inserting 33, the pair of wires 36, 36 is led out upward, and the middle portion is attached to the pair of first pulleys 29, 29. Engaging and turning downward, and further engaging the middle part with the second pulleys 30, 30 to turn upward, the screw portion 38,
The other end side of the pair of wires 36, 36 provided with 38,
The receiving portion 3 is inserted through the through holes 34, 34 of the receiving portions 35, 35 provided in the horizontal rod portion 31 from the lower side to the upper side.
5, 35, and nuts 39, 39 are screwed onto the threaded portions 38, 38 to form the pair of wires 36, 36.
The other end side of is attached to the horizontal rod portion 31. Therefore, the wire 36 is always kept in a tension state by rotating the nut 39 in the tightening direction, and even when the wire 36 is slackened, the wire 36 is rotated in the tightening direction by rotating the nut 39. Are formed so that they can be kept in tension.

On the other hand, the headboard body 2 has the same structure as the footboard body 3. That is, as shown in FIG. 7, fixed struts 40, 40 are provided on both left and right sides of the headboard body 2, and the fixed struts 40, 40 are provided with an upper horizontal rail member 41 having a rectangular tubular shape and a lower cross-shaped U-shaped section. The headboard 3 is provided between a bearing 43 attached to the central portion of the upper horizontal rail member 41 and a bearing 44 attached to the central portion of the lower horizontal rail member 42, which are connected by a horizontal rail member 42. The upper end of a screw rod 45 having a screw opposite to that of the screw rod 14 is rotatably supported by the bearing 43, the vicinity of the lower end is rotatably supported by the bearing 44, and the lower end of the screw rod 45 is supported by the lower portion of the cross rail member 42. Gearbox 4 provided
6 and the second bevel gear 47 is fitted therein.

The fixed column 40 has a U-shaped cross section, and a metal fitting 48 having a U-shaped cross section is provided at the lower end of the fixed column 40. 49
, And the expansion and contraction columns 49, 49 are provided in the fixed columns 40, 40 so as to be vertically expandable and contractible. The telescopic support 49,
Reference numeral 49 projects downward from the lower ends of the fixed columns 40, 40. The casters 50, 50 are attached to the lower ends of the telescopic columns 49, 49. Further, the telescopic columns 49, 4
Gas springs 51, 51 are provided in the chamber 9. The main body 52 of the gas spring 51 is inserted into the telescopic column 49 from above so that the lower end of the main body 52 is fixed to the telescopic column 49 by the pin 53, and the upper end is fixed by the metal fitting 54.
Fixed to the main body 52, and the tip portion of the rod 55 drawn out upward from the main body 52 is placed above the fixed support column 40 by a spacer 56.
It is also attached by the pin 57.

A pair of L metal fittings 58 are provided at the lower part of the upper horizontal rail member 41 and symmetrically with respect to the screw rod 45.
58 are attached to the front surface side and the back surface side with their directions reversed, and the pair of first pulleys 59, 59 as the first guide bodies 59, 59 are attached to the L metal fittings 58, 58 with their directions reversed. It is rotatably installed.

Further, a pair of second pulleys 60, 60 as second guide bodies 60, 60 are freely rotatable at the upper and lower sides of the lower horizontal rail member 42 and at symmetrical positions close to the fixed columns 40, 40. It is provided in. Further, the telescopic columns 49, 49
The upper side of is connected by a horizontal rod portion 61. A threaded portion 62 that is screwed into the screw rod 45 is provided at the center of the horizontal rod portion 61, and the horizontal rod portion 61 is formed so as to be vertically movable with respect to the screw rod 45. A pair of bolts 63, 63 of appropriate length on the front surface and the back surface of the horizontal rod portion 61 at symmetrical positions in the vicinity of the screw portion 62.
Is fixedly provided at one end side thereof, and the fixed columns 40, 40
Through the through-holes 6 in the vertical direction on the front surface and the back surface of the horizontal rod portion 61 at the symmetrical positions of the horizontal rod portion 61 close to
A pair of rectangular parallelepiped receiving portions 6 provided with 4, 64
5 and 65 are fixed. Then, the loop 6 is provided on one end side of each of the pair of wires 66, 66 as the cord body 66.
7, 67 are formed, and the horizontal rod portion 6 is formed on the loops 67, 67.
1, 61 are inserted through the pair of bolts 63, 63, one end side of the pair of wires 66, 66 is attached to the horizontal rod portion 61, the pair of wires 66, 66 are led out upward, and the middle portion Is engaged with the pair of first pulleys 59, 59 and turned downward, and the intermediate portion is further provided with the second pulleys 60, 60.
And the other end of the pair of wires 66, 66 provided with the threaded portions 68, 68 is engaged with the horizontal rod portion 6 and is turned upward.
1 is inserted through the through holes 64, 64 of the receiving portions 65, 65 from below to project upward from the receiving portions 65, 65, and the nuts 69, 69 are attached to the screw portions 68, 68.
And the other ends of the pair of wires 66, 66 are attached to the horizontal rod portion 61. Therefore, the wire 66
Is always kept in a tension state by rotating the nut 69 in the tightening direction, and even if the wire 66 is slackened, the nut 66 is rotated in the tightening direction to bring the wire 66 into a tension state. It is formed so that it can be kept. A third bevel gear 71 rotatably supported on the side wall of the gear box 16 of the footboard body 3 via a bearing 70 is fitted to the lower end of the screw rod 14 to form a first bevel gear 17. And a fourth bevel gear 73 rotatably supported on the side wall of the gear box 46 of the headboard body 2 via a bearing 72 and fitted to the lower end of the screw rod 45. Bevel gear 47
It meshes with. Then, the both gearboxes 16 and 4
The third bevel gear 71 and the fourth bevel gear 73 provided on the No. 6 are connected by a connecting shaft 74.

The connecting shaft 74 is installed along the lower surface of the frame 1, and is configured as shown in FIGS. 8 to 10. That is, the connecting shaft 74 is divided into a foot-side connecting shaft 75 and a head-side connecting shaft 76. First, the foot-side connecting shaft 75 will be described. 77 is provided integrally with the third bevel gear 71. An engaging member 79 having a split groove 78 is connected to the end of the shaft 77 by a pin 80. Then, the shaft body 8 of the foot-side connecting shaft 75
An engaging pin 82 that engages with the split groove 78 at one end
The fitting portion 83 having the is provided so that the fitting member 83 can be fitted. The shaft portion 86 of the engaging member 85 is slidably inserted in the fitting portion 84 at the other end of the shaft body 81 in the axial direction, and the fitting cylinder portion 87 is provided with a head side connecting shaft 76 to be described later. An engagement pin 88 that engages with the split groove 102 is provided. Further, a long hole 91 is formed in the shaft portion 86 of the engaging member 85 by the split groove 89 and the pin 90. The long hole 91 is provided in the fitting portion 84 of the shaft body 81 in the radial direction. The stop pin 92 is inserted and the amount of movement of the engagement member 85 in the axial direction is regulated. Further, a stopper pin 93 is provided inside the engaging portion 84 of the shaft body 81, and a coil spring 94 is interposed between the stopper pin 93 and the end face of the shaft portion 86 of the engaging member 85. ing.
Next, the head side connecting shaft 76 will be described.
Reference numeral 5 denotes a shaft integrally provided with the fourth bevel gear 73, and an engaging member 97 having a split groove 96 is connected to an end of the shaft 95 by a pin 98. The head side connecting shaft 76
A connecting cylinder 101 having an engaging pin 100 that engages with the split groove 96 is provided at one end of the shaft main body 99, and an engaging member 103 having a split groove 102 is provided at the other end of the pin 10.
4, 104 are connected. Therefore, the engagement member 85 of the foot-side connecting shaft 75 has the coil spring 94.
Is urged in a direction projecting from the shaft main body 81, and as shown in FIGS. 8 and 9, the engaging cylinder portion 87 is fitted to the engaging member 103 of the head side connecting shaft 76, and is engaged. The pin 88 is engaged with the split groove 102. Therefore, the rotational force of the third bevel gear 71 on the footboard body 3 side is transmitted to the fourth bevel gear 73 on the headboard body 2 via the foot side connecting shaft 75 and the head side connecting shaft 76. Has become. Further, as shown in FIG. 10, the engaging pin 85 is retracted into the fitting portion 84 of the shaft body 81 against the restoring force of the coil spring 94, so that the engaging pin 88 is moved. The foot-side connecting shaft 75 and the head-side connecting shaft 76 are divided into two parts by coming out from the split groove 102 provided in the engaging portion 103 of the head-side connecting shaft 76. Therefore, the foot-side connecting shaft 75 and the head-side connecting shaft 76 have the engaging member 7 integrated with the third bevel gear 71 and the fourth bevel gear 73.
It can be detached from 9, 97 and the connecting shaft 74 can be disassembled from both gear boxes 16, 46.

Next, the operation of the bed apparatus configured as described above will be described.

When the handle 15 provided on the upper portion of the footboard body 3 is gripped and the screw rod 14 is rotated in one direction by rotating the handle, for example, the screw rod 14 is laterally provided with the screw portion 32 screwed into the screw rod 14. The rod 31 moves down. Therefore, the telescopic column 19, which is connected to the horizontal rod portion 31,
19 moves downward together with the horizontal rod portion 31, and the fixed columns 9, 9
It will be in the state extended from. At this time, the rotational force of the screw rod 14 of the footboard body 3 is transmitted to the connecting shaft 74 via the first bevel gear 17 and the third bevel gear 71, and further,
It is transmitted to the screw rod 45 of the headboard body 2 via the fourth bevel gear 73 and the second bevel gear 47. At this time, the screw rod 45 of the headboard body 2 rotates in the opposite direction to the screw rod 14 of the footboard body 3. However, the screw rod 45 of the headboard body 2 is not
Since it is formed as a reverse screw, the horizontal rod portion 61 provided with the screw portion 62 screwed to the screw rod 45 descends. Therefore, the telescopic column 4 connected to the horizontal rod portion 61
The reference numerals 9 and 49 move downward together with the horizontal rod portion 61 to extend from the fixed support columns 40 and 40. Therefore, the telescopic struts 49, 49 of the headboard body 2 and the telescopic struts 19, 19 of the footboard body 3 are simultaneously extended, and the height of the frame 1 can be increased as shown by the chain line in FIG.

When lowering the height of the frame 1, the handle 1
When 5 is turned counterclockwise and the screw rod 14 of the footboard body 3 is rotated, the horizontal rod portion 31 provided with the screw portion 32 screwed to the screw rod 14 is raised. Therefore, the telescopic columns 19, 19 connected to the horizontal rod portion 31 move upward and retract into the fixed columns 9, 9 while retracting. At this time, the screw rod 1 of the footboard body 3
The rotational force of No. 4 is transmitted to the connecting shaft via the first bevel gear 17 and the third bevel gear 71, and further via the fourth bevel gear 73 and the second bevel gear 47. Is transmitted to the screw rod 45. Then, as the screw rod 45 rotates, the horizontal rod portion 61 provided with the screw portion 62 screwed to the screw rod 45 rises, and the telescopic columns 49, 49 connected to the horizontal rod portion 61 move horizontally. The telescopic columns 49, 49 move upward together with the rod 61, and the fixed columns 4
Immerse yourself while being drawn into 0,40. Therefore, the telescopic columns 49, 49 of the headboard body 2 and the telescopic columns 19, 19 of the footboard body 3 are simultaneously fixed columns 40, 40 ,.
The height of the frame 1 becomes low because it is immersed in the inside of the frame 19.

By the way, the cord body 3 provided on the footboard body 3
The pair of wires 36, 36 as 6 are the wires 36, 3
By rotating the nuts 39, 39 screwed into the screw portions 38, 38 provided on one end side of 6 in the tightening direction,
I'm always in tension. Also, a pair of wires 36,
Of the 36, one side is provided on the front side of the footboard body 3, and the other side is provided on the back side. Therefore, the horizontal rod portion 31 is kept in a well-balanced horizontal state by the pair of wires 36, 36 pulling the vicinity of the screw portion 32 upward and pulling the vicinity of both ends downward. Further, in the left-right direction of the horizontal rod portion 31, a pair of wires 3 of the same length are placed at symmetrical positions.
6, 36, the overall balance is maintained, and since one wire 36 is provided on the front surface side and the other wire 36 is provided on the back surface side in the front and back directions, the balance is maintained without being biased to one side. There is. Therefore, when the horizontal rod portion 31 and the telescopic columns 19, 19 are moved downward, for example, in FIG. 3, a load larger than that on the right side is applied to the left side of the horizontal rod portion 31, and the left side of the horizontal rod portion 31 is left. Assuming that the lower part diagonally goes down and the right part rises obliquely upward, the distance between the left side of the horizontal rod part 31 and the lower horizontal rail member 11 becomes short with the screw part 32 as a fulcrum, so that the wire 36 on the left side is connected to the bolt 33. Between the first pulley 29 engaged with the first pulley 29 and the first pulley 2
The length between 9 and the second pulley 30 does not change, but the second
The pulley 30 and the other end side where the screw portion 38 is provided are slack. On the other hand, since the right side of the horizontal rod portion 31 is inclined obliquely upward with the screw portion 32 as a fulcrum,
The length of the wire 36 on the right side between the one end engaged with the bolt 16 and the first pulley 29 and the length between the first pulley 29 and the second pulley 30 do not change, but the second pulley 30 The length between the other end side where the screw portion 38 and the screw portion 38 are provided must be increased by applying tension.

However, since the wire 36 does not extend even when tension is applied, the length between the second pulley 30 and the other end side provided with the screw portion 38 does not change. The horizontal rod section 3
The right side of 1 is maintained in a horizontal state without being inclined obliquely upward. Accordingly, the left side of the horizontal rod portion 31 is also maintained in a horizontal state without being inclined. Therefore, the horizontal rod portion 31 moves downward while always being kept in a horizontal state by the pair of wires 36, 36. Along with this, the telescopic support 1
9 and 19 are always kept in a vertical state, and can be smoothly moved downward in the fixed columns 9 and 9. Similarly, when the horizontal rod portion 31 moves upward, the horizontal rod portion 31 is always kept in a horizontal state, so that the telescopic columns 19, 19 smoothly move upward in the fixed columns 9, 9. be able to. or,
Similarly, in the headboard body 2, since the horizontal rod portion 61 is always kept in the horizontal state and the telescopic column 49 is kept in the vertical state accordingly, the telescopic columns 49, 49 are fixed columns 40, 40. It can move up and down smoothly.

Further, by moving the horizontal rod portion 31 downward,
When extending 19 with respect to the fixed columns 9 and 9, the telescopic column 1 is resisted against the weight of the frame 1, the mattress placed on the frame 1, the user lying on the mattress, and the like.
Since 9 and 19 must be extended, a large load is applied to the screw rod 14 and the threaded portion 82 of the lateral rod portion 31. Therefore, in the past, in order to rotate the screw rod 14, the handle 15 had to be turned with a large force, but in the present invention, a gas spring 21 is provided in the telescopic support column 19, and the gas spring 21 is used. By constantly urging the telescopic column 19 in the direction in which it extends with respect to the fixed column 9, the handle 15 can be rotated with a relatively small force to raise the frame 1.
Similarly, also in the headboard body 2, the gas spring 5
Since 1 always urges the telescopic column 49 in the direction to extend with respect to the fixed column 40, the telescopic column 4 is relatively small in force.
9 can be extended.

On the contrary, when the telescopic column 19 is shortened with respect to the fixed column 9, the weight of the frame 1, the mattress, the user, or the like is always applied in the direction of shortening the telescopic column 19, so that a relatively small force is required. The frame 15 can be lowered by rotating the handle 15 and rotating the screw rod 14. Further, in the conventional example, the weight of the frame and the mattress and the weight of the user lying on the mattress are supported by the wires on the headboard side and the wires on the footboard side. Since it is a configuration that is only done,
Although there was no rigidity and there was a problem in durability, in the present invention, the entire load is applied to the screw rods 14 and 45 of the footboard body 3 and the headboard body 2 and the screw portions 32 of the lateral rod portions 31 and 61. , 62, and the support rods 19 and 19 of the footboard body 3 are connected by the horizontal rod portion 31, and the extension rods 49 and 49 of the headboard body 2 are connected by the horizontal rod portion 61, respectively. Since it has a structure, it has excellent durability as compared with the conventional example.

According to the bed apparatus thus configured, the frame 1 can be raised or lowered by turning the handle 15 provided on the footboard body 3 with a relatively small force, and depending on the situation such as medical examination. The height of the frame 1 can be adjusted and the frame 2 can be kept in an appropriate state.

In the above embodiment, the pulley is used as the guide body and the wire is used as the cord body. However, the present invention is not limited to this, and a sprocket may be used as the guide body and a chain may be used as the cord body.

Further, in the above embodiment, the headboard body 2 and the footboard body 3 are shown only by the main constituent members, but in reality, the front side and the backside of the headboard body 2 and the footboard body 3 are covered with a decorative plate or the like. It is torn and formed well.

(Effect of the Invention) As described above, according to the present invention, by operating the handle, it is possible to simultaneously expand and contract the telescopic support of the headboard body and the telescopic support of the footboard body with respect to the fixed support. The frame height can be easily increased or decreased.

Further, at this time, the handle can be operated with a relatively small force. Further, the telescopic support can smoothly move up and down in the fixed support. For example, even when the user is located on one side in the width direction of the frame and a larger load is applied to one side of the headboard body in the left and right direction and one side of the footboard body in the left and right direction, the left and right sides expand and contract. The support column can be smoothly moved up and down in the fixed support column, and has an advantage that it can be smoothly moved up and down without tilting or rattling the frame.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a perspective view of a bed apparatus, FIG. 2 is a side view with a partial cross section of the bed apparatus, and FIG. 3 is a partial cross section of a footboard body. FIG. 6 is a side view, FIG. 4 and FIG. 5 are explanatory views in which the ends of the cord are attached to the lateral rods, and FIG. 6 is a sectional view taken along the line AA in FIG. The figure shows a side view with a partial cross section showing the headboard body, FIG. 8 is a side view with a partial cross section of the connecting shaft, FIG. 9 is a cross sectional view taken along the line BB of FIG. 8, and FIG. It is the side view which carried out the partial cross section of the state which disassembled a shaft. DESCRIPTION OF SYMBOLS 1 ... Frame 2 ... Headboard body 3 ... Footboard body 9,40 ... Fixed support | pillar 10,41 ... Upper horizontal rail member 11,42 ... Lower horizontal rail member 14,45・ ・ ・ Screw rod 15 ・ ・ ・ Handle 19, 49 ・ ・ ・ Telescopic column 21, 51 ・ ・ ・ Gas spring 29, 59 ・ ・ ・ First guide body 30, 60 ・ ・ ・ Second guide body 31, 61 ... Horizontal rod part 32, 62 ... Screw part 36, 66 ... Rope body 74 ... Connection shaft

Claims (1)

[Scope of utility model registration request] 1. A frame on which bedding such as a mattress is placed, a pair of fixed columns provided on each of the head side and the foot side of the frame, and an upper crosspiece member connecting each pair of fixed columns. A lower horizontal rail member, a screw rod rotatably provided in parallel with the fixed columns provided on the head side and the foot side of the frame, and at least one side of the screw rods on the head side and the foot side of the frame. The handle for applying a rotational force to the screw rod, the expansion and contraction support provided in the respective fixed support columns so as to be vertically expandable and contractible, and the expansion support columns on the head side and the foot side of the frame are connected, A horizontal rod portion provided with a threaded portion screwed with the rod and each of the telescopic columns are provided within the telescopic column and extendable and retractable with respect to the fixed column. , A pair of first guides provided on the lower portion of the upper horizontal rail member, and a pair of second guides provided on the lower horizontal rail member. Both ends are attached to the body and each of the lateral rods, and the middle part is attached to the first and second portions.
A pair of cords engaged with the guides, and a connecting shaft provided along the frame for interlocking the rotational force of the head-side screw rod and the foot-side screw rod. Characterized bed equipment.