JP3130246U - Bed with tilt support mechanism - Google Patents

Abstract

The bed plate can be rotated between a horizontal position and an inclined position with a small stroke of the telescopic link, and the bed plate can be stopped at an arbitrary inclined position while preventing the bed plate from jumping up. Get a bed.
An inclined support mechanism S includes a link mechanism LK composed of a long link 15 and a short link 17 for connecting a bed base and a bed plate at positions along both sides thereof, and a horizontal position and an inclined position of the bed plate. Telescopic link 16 acting on the link mechanism LK so as to be displaced between the two. Both ends of the short link 17 are pivotally attached to the bed base and the bed plate at positions close to one end of the bed base and the bed plate, and both ends of the long link 15 are separated from the one end portion from both ends of the short link 17. The telescopic link 16 is connected to the bed base and the bed plate in a position so that the telescopic link 16 can be expanded and contracted between the middle portion of the long link 15 and the bed base 10. The telescopic link 16 includes a male screw 43 and a female screw 39 that are screwed to each other, and a motor M that rotates the male screw 43 and performs an expansion / contraction operation of the telescopic link.
[Selection] Figure 3

Description

  The present invention relates to a bed with an inclined support mechanism that includes a bed base having an internal space and a bed plate that is positioned on the bed base and can be opened and closed.

  In cities, the living space is becoming narrower due to the dense population, so how to secure a flexible storage space in a small living space has become the goal of R & D for furniture designers.

  Speaking of the bed that occupies the widest space in the living space, for example, a sofa bed folds the bed board on the bed base when used as a sofa during the day and unfolds the bed board at night as a bed. Convenient and versatile because it is used and can be folded easily and can accommodate objects inside the bed base, but its flexibility is not sufficient for actual use, and the bed board There is a drawback that the bed board may be bent by folding.

  In order to solve this problem, for example, a bed with an inclined support mechanism described in Patent Document 1 has been proposed. This type of bed with an inclined support mechanism includes a bed base having an internal space, a bed plate positioned on the bed base, a horizontal position that is horizontal on the bed base, and an inclination that is inclined on the bed base. And an inclined support mechanism for supporting the bed plate on the bed base so as to displace the bed plate between positions, the inclined support mechanism is arranged along the both sides of the bed base and the bed plate. A link mechanism including a short link and a long link that are connected in position, and an extendable link that operates the link mechanism so as to displace the bed plate between a horizontal position and an inclined position.

Registered Utility Model No. 3000962

  In the conventional bed with the tilt support mechanism, the telescopic link that operates the link mechanism so as to displace the bed plate between the horizontal position and the tilt position is pivotally attached to the bed base and its distal end. The portion is pivotally attached to the bed plate and is constituted by a spring-loaded hydraulic cylinder or an air cylinder.

  Therefore, in the conventional bed with an inclined support mechanism, in order to rotate the bed plate between the horizontal position and the inclined position, a stroke of the expansion / contraction link substantially proportional to the rotation angle of the bed plate is required, and as a result, the bed expands and contracts. The required stroke of the link becomes large. In addition, since the conventional bed with an inclined support mechanism uses a spring-loaded hydraulic cylinder or air cylinder as the expansion and contraction link, if the weight of the bed plate is too light in relation to the spring setting value of the hydraulic cylinder or air cylinder, The cylinder or air cylinder may jump up, and a special device is required to stop the bed plate at a stepless arbitrary tilt position. Also, the bed plate is stably placed in a horizontal position on the bed base. There is a drawback that it is difficult to fix.

  The present invention has been made to solve the above problems, and the problem is that the bed board can be rotated between a horizontal position and an inclined position with a small stroke of the telescopic link, while preventing the bed board from jumping up. An object of the present invention is to obtain a bed with an inclined support mechanism that can easily stop the bed plate at an arbitrary inclined position steplessly and can stably fix the bed plate to a horizontal position on the bed base.

  The invention described in claim 1 is a bed base having an internal space, a bed plate positioned on the bed base, a horizontal position that is horizontal on the bed base, and an inclination on the bed base. An inclined support mechanism for supporting the bed plate on the bed base so as to displace the bed plate between the inclined position, and the inclined support mechanism includes the bed base and the bed plate. A link mechanism composed of a short link and a long link connected at positions along both sides thereof, and an extendable link for operating the link mechanism so as to displace the bed plate between the horizontal position and the inclined position. A bed with an inclined support mechanism, wherein both ends of the short link are pivotally attached to the bed base and the bed plate at positions close to one end of the bed base and the bed plate, and the long link Both ends are pivotally attached to the bed base and the bed plate at positions away from the one end from the both ends of the short link, and the telescopic link is between the middle part of the long link and the bed base. The telescopic link is connected to be extendable and retractable, and the telescopic link includes a male screw and a female screw that are screwed together, and a motor that rotates the telescopic link by rotating one of the two screws.

  The invention according to claim 2 is the bed with an inclined support mechanism according to claim 1, wherein the both sides of the bed base and the bed plate are both sides in the longitudinal direction of the bed base and the bed plate. The one end of the bed base and the bed plate is one end in the longitudinal direction of the bed base and the bed plate.

  The invention according to claim 3 is the bed with an inclined support mechanism according to claim 1 or 2, wherein the telescopic link is fixed to a cylindrical body that rotatably accommodates the male screw, and a base end of the cylindrical body. And a gear box that supports the motor, a nut body that is supported so as to be slidable in the axial direction in a state in which rotation is prevented in the cylinder, and is accommodated in the gear box, and the rotation of the motor is A gear mechanism that transmits to a male screw, and a rod that is slidably inserted in the cylinder body in the axial direction thereof, one end connected to the nut body, and the other end side extending coaxially from the cylinder body to the outside. It is characterized by that.

  According to a fourth aspect of the present invention, in the bed with the inclined support mechanism according to the third aspect, a hollow groove portion communicating with the inside is provided on the outer surface of the cylindrical body in the longitudinal direction, and the nut body is provided in the hollow groove portion. A protrusion formed on the outer periphery is engaged to prevent the nut body from rotating.

  The invention according to claim 5 is the bed with an inclined support mechanism according to claim 4, wherein a limit switch is provided in the hollow groove portion to detect a limit position of expansion / contraction of the expansion / contraction link and stop the motor. It is characterized by.

  The invention described in claim 6 is characterized in that, in the bed with an inclined support mechanism according to claim 3, 4 or 5, the gear mechanism is a worm gear mechanism.

  The invention according to claim 7 is the bed with an inclined support mechanism according to claim 3, 4, 5 or 6, wherein the gear box is pivotally attached to the bed base, and the tip of the rod is the long link. Characterized by being pivotally attached

  The invention according to claim 8 is the bed with an inclined support mechanism according to claim 3, 4, 5, 6 or 7, wherein the base end of the telescopic link is pivotally attached to the mold material fixed to the bed base. It is characterized by that.

  According to the first aspect of the present invention, the bed board can be rotated between the horizontal position and the inclined position with a small stroke of the telescopic link, and the bed board is not placed in an arbitrary inclined position while preventing the bed board from jumping up. It is easy to stop in stages, and the effect that the bed plate can be stably fixed to a horizontal position on the bed base is obtained.

  In the device according to claim 2, in addition to the effect of the device according to claim 1, there is obtained an effect that the bed plate can be surely displaced in an inclined state in which one end portion in the longitudinal direction becomes high. It is done.

  In the device described in claim 3, in addition to the effect of the device described in claim 1 or 2, in the cylinder body fixed to the gear box, the nut body is prevented from rotating, but in the longitudinal direction of the cylinder body. By slidably housing, a nut body that is screwed into a male screw that is rotationally driven by a motor via a gear mechanism in the gear box is slid in the cylinder, thereby causing the rod to move relative to the cylinder. An effect is obtained that the elastic link can be expanded and contracted by sliding and sliding smoothly.

  In the device according to the fourth aspect, in addition to the effect of the device according to the third aspect, the effect that the rotation of the nut body is surely prevented can be obtained.

  In the device described in claim 5, in addition to the effect of the device described in claim 4, a means for reliably stopping the motor at the expansion limit position of the expansion link can be easily installed using the hollow groove portion. The effect that it can be obtained.

  In the device according to claim 6, in addition to the effect of the device according to claim 3, 4 or 5, the rotation of the motor can be smoothly transmitted to the nut body and the rod via the male screw by the worm gear mechanism. An effect is obtained.

  In the device described in claim 7, in addition to the effect of the device described in claim 3, 4, 5 or 6, the mechanism is stabilized by arranging a heavy gear box near the bed base. The effect is obtained.

  In the device described in claim 8, in addition to the effect of the device described in claim 3, 4, 5, 6 or 7, the base end of the telescopic link is pivotally attached to the bed base through the mold material. The effect of becoming strong in strength is obtained.

  The best embodiment of the present invention shown in FIGS. 1 to 6 will be described below.

  As shown in FIGS. 1 and 2, the bed B with the inclined support mechanism of the present invention is composed of a bed base 10 and a bed plate 11 positioned on the bed base 10. As shown in FIG. 1, the bed base 10 has a rectangular frame 10a, and an internal space 12 for accommodating an object is formed inside the rectangular frame 10a. In the illustrated embodiment, the bottom of the rectangular frame 10a is open and has no bottom.

  The bed plate 11 is rotatable with respect to the bed base 10 between a horizontal position shown in FIG. 2 and an inclined position shown in FIG. Performed by mechanism S. In the inclined position of the bed plate 11 shown in FIG. 1, the internal space 12 of the bed base 10 is opened, and an object can be accommodated or taken out from the inside. In the horizontal position shown in FIG. 2, a person can sleep or hang on the bed board 11.

  The inclined support mechanism S includes a link mechanism LK including a long link 15 and a short link 17 that connect the bed base 10 and the bed plate 11 at positions along both sides thereof, and an extendable link that rotates the link mechanism. It consists of 16 and. The both sides of the bed base 10 and the bed plate 11 are both sides in the longitudinal (vertical) direction of the bed base 10 and the bed plate 11 in the illustrated embodiment. The inclined support mechanism S is composed of a pair of equally configured mechanisms pivoted along the both sides of the bed base 10 and the bed plate 11.

  In the illustrated embodiment, the bed plate 11 is inclined such that one end in the longitudinal (longitudinal) direction is low and the other end is high. Instead, the bed plate 11 has a horizontal direction (width direction). ) May be inclined so that one end is low and the other end is high. In this case, as in the case of Patent Document 1, the link mechanism LK is provided along both sides in the width direction of the bed base 10 and the bed plate 11, that is, both short sides.

  The inclined support mechanism S is composed of a pair of equally configured mechanisms pivoted along both sides of the bed base 10 and the bed plate 11 as described above. Only the one-side mechanism along will be described. As shown in FIG. 3, a mold member 14 is fixed to the inner surface of the side of the rectangular frame 10a of the bed base 10 in the longitudinal direction along the bottom edge of the rectangular frame 10a. As shown in FIG. 1, the mold member 14 is a groove mold member having a U-shaped cross section, for example, and is fixed to the side in the longitudinal direction of the rectangular frame 10a with the groove facing inward. Similarly, a similar mold member 13 is fixed in the longitudinal direction on the lower surface of the side edge of the bed plate 11 in the longitudinal direction. The long link 15 and the short link 17 are pivotally attached to the mold members 14 and 13 at their upper and lower ends.

  In the state shown in FIG. 4 in which the bed plate 11 is positioned horizontally on the bed base 10, the short link 17 has a lower end pivoted near the longitudinal end of the mold 14 of the bed base 10 (the right end in FIG. 4). It is pivotally attached at 18. The short link 17 extends obliquely upward from the pivot pin 18 in a direction approaching the end frame 10e at one end in the longitudinal direction of the rectangular frame 10a of the bed base 10, and the upper end of the short link 17 is The mold member 13 is pivotally attached to the mold member 13 by a pivot pin 19 near one end in the longitudinal direction (right end in FIG. 4). On the other hand, the lower end of the long link 15 is pivotally attached by a pivot pin 21 near the other longitudinal end (left end in FIG. 4) of the mold 14 of the bed base 10. The long link 15 extends obliquely upward in a direction approaching the end frame 10e at one end in the longitudinal direction of the bed base 10, and its upper end pivots to the mold 13 at a position near the one end in the longitudinal direction of the mold 13 of the bed plate 11. It is pivotally attached with a wear pin 22. As is apparent from FIG. 4, the pivot pin 21 at the lower end of the long link 15 is located at a position closer to the other end in the longitudinal direction of the bed base than the middle of the longitudinal dimension of the bed base 10. The position depends on the length of the bed and the dimensions of the linkage. The pivot pin 22 at the upper end of the long link 15 is located farther from one end (the right end in FIG. 4) of the bed plate 11 than the pivot pin 19 at the upper end of the short link 17. The interval L1 between the pivot pin 19 at the upper end of the short link and the pivot pin 22 at the upper end of the long link is smaller than the interval L2 between the pivot pin 18 at the lower end of the short link and the pivot pin 21 at the lower end of the long link. In the state of FIG. 4, the short link 17 and the long link 15 are in a positional relationship in which they approach each other upward.

  The lower end of the telescopic link 16 constituting the inclined support mechanism S is pivotally attached to the mold member 14 of the bed base 10 by a pivot pin 23. The position of the pivot pin 23 at the lower end of the telescopic link is farther from the end frame 10e than the position of the pivot pin 18 at the lower end of the short link 17, but the pivot pin 23 is relatively close to the pivot pin 18. It is in. The telescopic link 16 extends obliquely upward from the pivot pin 23, and its upper end is pivoted by a pivot pin 25 at a middle position of the long link 15. As shown in FIG. 3, it is preferable that a partition 27 is provided in the internal space 12 to divide a part for accommodating the inclined support mechanism S and a part for accommodating an object.

  As shown in FIG. 5, in terms of appearance, the telescopic link 16 has a rod 30 whose tip is pivotally attached to the pivot pin 25, a cylinder 31 that slidably receives the rod 30 therein, and the cylinder A gear box 32 that integrally supports the base end of the body 31 and a reversible electric motor M that is integrally supported by the gear box 32 are configured. A bracket 33 used to pivotally attach the base end of the telescopic link 16 with the pivot pin 23 is projected from the gear box 32.

  Referring to FIG. 6 in which the telescopic link 16 is disassembled, the gear box 32 is integrally provided with a cylindrical protrusion 34 at one end thereof, and the base end of the cylindrical body 31 is fitted into the protrusion 34. Both are integrated. On the circumferential surface of the cylindrical body 31, a hollow groove portion 36 projects outward in the longitudinal direction, and the inside of the cylindrical body 31 communicates with the inside of the hollow groove portion 36. Inside the hollow groove portion 36, a flange member 37 made of synthetic resin is fitted and fixed along it. Further, as shown in FIG. 5, an annular nut body 39 is fitted inside the tip end side of the cylindrical body 31 so as to be slidable in the axial direction. The nut body 39 has an internal thread 40 on its inner surface, and an axial protrusion 41 is formed on its outer surface. The protrusion 41 engages with the flange-shaped member 37 in the hollow groove 36 and is movable while being guided in the longitudinal direction of the flange-shaped member 37. Therefore, the nut body 39 is slidable in the axial direction inside the cylindrical body 31, but is prevented from rotating.

  In FIG. 6, a rod-shaped male screw 43 is inserted into the cylindrical body 31 and screwed into the female screw 40 of the nut body 39. The male screw 43 is rotatably supported by a ball bearing 45 inserted and fixed inside the cylindrical body 31. On the other hand, another ball bearing 47 is mounted inside the gear box 32, and the worm gear 48 is rotatably supported between the ball bearings 45 and 47. Reference numeral 49 denotes a protective cover that covers the outer periphery of the ball bearing 47. A worm 51 connected to the output shaft of the motor M is engaged with the worm gear 48. The worm gear 48 is coaxially fixed to the rod-shaped male screw 43, and the male screw 43 is also rotated by the rotation of the worm gear 48. The opening of the gear box 32 is closed by attaching a lid 53 having the bracket 33 integrally therewith.

  Limit switches LS1 and LS2 are attached to both ends of the bowl-shaped member 37, and are fixed inside the hollow groove 36. The limit switches LS1 and LS2 are actuated by the protrusion 41 of the nut body 39. Reference numerals 54 and 55 are wirings to the limit switches LS1 and LS2, and are passed through the hollow groove 36. These wires 54 and 55 are connected to the operating circuit of the motor M. A protrusion 56 having a square cross-sectional shape is integrally formed on the upper portion of the cylindrical protrusion 34 protruding from the gear box 32, and the hollow groove 36 of the cylindrical body 31 is formed in the protrusion 56. Inserted and fixed. As a result, the base end of the cylindrical body 31 is integrally connected to the gear box 32. A guide member 59 having a projection 57 that closes the open end of the hollow groove 36 and an opening 58 that guides the rod 30 is fitted into the distal end opening of the cylindrical body 31. A cap 60 is fitted into the tip of the rod 30.

  The telescopic link 16 has the above-described configuration, and the operation of the motor M causes the male screw 43 to rotate in either direction via a gear mechanism including the worm 51 and the worm gear 48, thereby preventing the nut body 39 from rotating. In this state, the cylindrical body 31 is slid and displaced in the longitudinal direction. Therefore, the expansion / contraction operation of the expansion / contraction link 16 is performed. Then, the limit switches LS1 and LS2 are operated at the limit point of the expansion / contraction operation of the expansion / contraction link 16, the operation circuit of the motor M is closed, and the motor M stops. The motor M is provided with an operation circuit for stopping the motor M at an arbitrary position, and by stopping the motor M, the expansion / contraction link 16 can be placed in an arbitrary expansion / contraction state steplessly and maintained in that state. It has become.

  FIG. 4 shows a state where the telescopic link 16 is most contracted. In this state, the long link 15 and the short link 17 are in the most collapsed state, the mold member 13 is in the horizontal position, and the bed plate 11 is in the horizontal position on the bed base 10. Therefore, the internal space 12 of the bed base 10 is closed by the bed plate 11 and can be hung on the bed plate 11 or can sleep.

  When the motor M is operated in the state of FIG. 4 to extend the telescopic link 16, the upper end of the telescopic link 16 acts on the long link 15, and the long link 15 is counteracted around the pivot pin 21 in FIG. 4. Turn clockwise. As a result, the upper end of the long link 15 is displaced upward, and the bed plate 11 begins to rise toward the inclined state shown in FIG. On the other hand, since the upper end of the long link 15 is displaced leftward in FIG. 4 due to the extension of the telescopic link 16, the upper end of the short link 17 is similarly displaced leftward. 17 is rotated around the pivot pin 18 in the counterclockwise direction from the position shown in FIG. 4 and displaced toward the substantially upright position shown in FIG. As described above, when the long link 15 and the short link 17 are rotated counterclockwise from the position shown in FIG. 4, the bed plate 11 is tilted and displaced above the bed base 10 as shown in FIG. At the same time, it is displaced leftward in FIG. The reason why the bed plate 11 is inclined so that the left side is higher in FIG. 3 is that the long link 15 that is longer than the short link 17 rises. As described above, the bed plate 11 is also displaced leftward in FIG. 3, so that even when the bed board is installed so as to rise immediately above the end frame 10 e, when the bed plate 11 is displaced upward, The right end of the bed plate 11 in FIG. 3 does not interfere with the bed board.

  The state shown in FIG. 3 is the state in which the expansion / contraction link 16 is extended most, but if the extension amount of the expansion / contraction link 16 is increased, the bed plate 11 can be inclined more. In the state of FIG. 3, the internal space 12 of the bed base 10 is opened, so that objects can be stored and taken out. When the motor M is operated in the opposite direction in the state of FIG. 3 and the telescopic link 16 is contracted, the long link 15 and the short link 17 rotate clockwise in the figure, and the bed plate 11 returns to the horizontal state of FIG. The surface of the bed plate 11 can be used. At this time, since the expansion / contraction link 16 can maintain an arbitrary expansion / contraction position, the horizontal state of the bed plate 11 can be stably maintained.

  In order to stop the bed plate 11 at an arbitrary inclined position between the states of FIGS. 3 and 4, the motor M may be stopped. Since the telescopic link 16 has a male screw and female screw threaded structure, if the motor M is stopped, the male screw and female screw continue to maintain the screwed state at the stop position, and the bed plate 11 is heavy. Even if it is light, it does not affect the expansion and contraction of the telescopic link 16, and the stopped screwing position is maintained, and the telescopic link is constructed using a spring-loaded hydraulic cylinder or air cylinder as before. Thus, the problem that the bed plate jumps up by a spring force or the like at the intermediate inclined position does not occur, and the arbitrary inclined position of the bed plate 11 is maintained in a fixed and stable manner.

  In addition, since the elastic link 16 is provided between the bed base 10 and the long link 15, the length of the elastic link can be shorter than in the conventional case where the upper end of the elastic link is directly connected to the bed plate, The extension amount is small. The telescopic link 16 acts on the long link 15 and raises the long link 15 from the sleeping state. Therefore, the long link 15 can be raised over a larger number of rotation angles with a small extension amount. It becomes possible to reduce the size of the entire link mechanism including the.

The perspective view in the inclination state of the bed with an inclination support mechanism of this invention. The perspective view in the horizontal state of the bed with an inclination support mechanism of this invention. The partial cross section side view corresponding to FIG. 1 of the bed with the inclination support mechanism of this invention. The partial cross section side view corresponding to FIG. 2 of the bed with the inclination support mechanism of this invention. The external appearance perspective view of an expansion-contraction link. The exploded perspective view of an expansion-contraction link.

Explanation of symbols

  B ... Bed with an inclination support mechanism, S ... Inclination support mechanism, LK ... Link mechanism, M ... Electric motor, 10 ... Bed base, 11 ... Bed plate, 10a ... Frame of bed base, 10e ... End frame, 12 ... internal space, 13 ... mold material, 14 ... mold material, 15 ... long link, 16 ... telescopic link, 17 ... short link, 18, 19, 21, 22, 24, 25 ... pivot pin, 27 ... partition, 30 ... rod 31 ... Cylinder body, 32 ... Gear box, 34 ... Cylindrical protrusion, 36 ... Hollow groove part, 37 ... Bridge member, 39 ... Nut body, 40 ... Female thread, 41 ... Projection, 43 ... Male thread, 45 ... Ball bearing , 47 ... Ball bearing, 48 ... Worm gear, 49 ... Protective cover, 51 ... Worm, 53 ... Lid, 54, 55 ... Wiring, LS1, LS2 ... Limit switch, 56 ... Projection, 59 ... Guide member, 60 ... cap.

Claims (8)

A bed base having an internal space, a bed board positioned on the bed base, and a bed board between a horizontal position that is horizontal on the bed base and an inclined position that is inclined on the bed base And an inclined support mechanism for supporting the bed plate on the bed base, and the inclined support mechanism connects the bed base and the bed plate at positions along their both sides. A bed with an inclined support mechanism, comprising: a link mechanism comprising a short link and a long link; and an extendable link for operating the link mechanism to displace the bed plate between the horizontal position and the inclined position. ,
Both ends of the short link are pivotally attached to the bed base and the bed plate at positions close to one end of the bed base and the bed plate, and both ends of the long link are connected to the one end from both ends of the short link. The telescopic link is connected to the bed base and the bed plate at a position away from the section, and the telescopic link is connected between the middle part of the long link and the bed base so as to be telescopically operable. A bed with an inclined support mechanism, comprising: a male screw and a female screw that are screwed to each other; and a motor that rotates one of these screws to perform an expansion / contraction operation of the expansion / contraction link. The both sides of the bed base and the bed plate are both longitudinal sides of the bed base and the bed plate, and the one end of the bed base and the bed plate is the bed base and the bed plate. The bed with an inclined support mechanism according to claim 1, wherein the bed is an end portion in the longitudinal direction of the bed plate. The telescopic link includes a cylindrical body that rotatably accommodates the male screw, a gear box that is fixed to a base end of the cylindrical body and supports the motor, and is prevented from rotating in the cylindrical body. A nut body slidably supported in the axial direction, a gear mechanism housed in the gear box and transmitting the rotation of the motor to the male screw, and slidably inserted in the cylindrical body in the axial direction The bed with an inclined support mechanism according to claim 1 or 2, wherein one end is connected to the nut body, and the other end side is a rod extending coaxially from the cylindrical body to the outside. A hollow groove portion communicating with the inside of the cylindrical body is provided in the longitudinal direction on the outer surface of the cylindrical body, and a protrusion formed on the outer periphery of the nut body is engaged with the hollow groove portion to prevent rotation of the nut body. A bed with an inclined support mechanism according to claim 3. The bed with an inclined support mechanism according to claim 4, wherein a limit switch that detects a limit position of expansion / contraction of the expansion / contraction link and stops the motor is provided in the hollow groove portion. 6. The bed with an inclined support mechanism according to claim 3, wherein the gear mechanism is a worm gear mechanism. 7. The bed with an inclined support mechanism according to claim 3, wherein the gear box is pivotally attached to the bed base, and a tip of the rod is pivotally attached to the long link. The bed with an inclined support mechanism according to claim 3, 4, 5, 6, or 7, wherein a base end of the telescopic link is pivotally attached to a mold fixed to the bed base.

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