bed

Abstract

To provide a bed capable of changing positions of a support part for fitting an option and of fixing the support part with the option fitted.SOLUTION: A bed has a width direction and a lengthwise direction, and an option is removably attached to a bed side part. The bed is provided with: a bottom arranged on a bed frame; a support part supporting the option at a first position outside an outer edge of the bottom in a width direction; and a support device connected to a side part of the bed frame and having the support part. The support part is movable between the first position capable of supporting the option and a second position located inside in the width direction of the first position. The support device has a stopper part fixing movements of the support part at the first position when the option is supported by the support part.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a bed to which an option is detachably attached to a side portion of the bed.

Background Art

[0002] For beds, particularly medical and nursing beds, options such as side fences for preventing a person lying horizontally from falling off the mattress or the futon from slipping off, and supports for hanging intravenous drips, etc. are detachably provided on the side portions of the bed.

[0003] Conventionally, for beds to which options can be attached, a plurality of support holes are fixed at predetermined intervals along the length direction of the bed on the side portions (one side portion or both side portions) in the width direction of the bed, and the supported portion of the option is inserted into these plurality of support holes. However, since the support holes are fixed to the side portions of the bed in such a bed, even after removing the option, the space on the side portion of the bed having the plurality of support holes becomes wasted.

[0004] As a technique for solving the above problems, for example, as Patent Document 1, a fixing member provided on a part of the side portion of a bed frame, having one end fixed to the bed frame and a first connecting hole formed at the other end, and a second connecting hole formed at one end and a support hole for supporting the above side fence formed at the other end, and a movable member rotatably connected to the fixing member by a connecting shaft passed through the second connecting hole and the first connecting hole, and a resistance member provided between the joining surfaces of the movable member and the fixing member for imparting rotational resistance to the movable member when the movable member is rotated with respect to the fixing member, a support device for a side fence is known.

[0005] Also, for example, as Patent Document 2, a support member having a support hole for supporting a side fence is provided in a recess formed in the side portion in the width direction of a bed frame so as to be foldable, and when not supporting the side fence, by folding the support member, it is possible for a doctor or a caregiver to enter the body into the recess to examine or care for the user, a support member for a side fence is known. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 1999-113683 [Patent Document 2] Patent No. 4783625 [Overview of the Initiative] [Problems that the invention aims to solve]

[0007] These conventional support devices are configured such that a portion of the support device having a support part rotates, and after the option is removed, the support part can be stored under the bed. However, because the support part of these support devices is movable, the support part is not fixed when an option is attached, and the attached option is not stable.

[0008] Furthermore, especially in medical and nursing care beds, patients of various body sizes may use the same bed, so some beds allow for adjustment of size (length and width). On the other hand, options such as side rails require consideration for the safety of the person lying down, such as preventing falls from the bed, and for facilitating medical and nursing care. For this reason, the mounting position of options needs to be changed to match the bed size.

[0009] Furthermore, especially with medical and nursing care beds, there is a need to lower the bed base (bottom) as much as possible, for example, when using the bed at home or depending on the symptoms. In beds that can be set to such a low position (hereinafter, such beds may be referred to as low-profile beds), it can be difficult to apply the conventional support devices described above. Because various protrusions such as casters and legs are provided on the underside of the bed, depending on the placement of the support device, there is a concern that when a part of the support device rotates, it may interfere with the protrusions and prevent the support part from being stored under the floor.

[0010] Furthermore, for example, the bed in Patent Document 2 uses both a support fixed to the side of the bed and a support provided on a rotating support device to attach options that have multiple support parts. Therefore, it only reduces some of the wasted space on the side of the bed. [Means for solving the problem]

[0011] A bed according to one aspect of the present invention is a bed having a width direction and a length direction, and having options that can be detachably attached to the side of the bed. The bed comprises a bed frame, a bottom positioned on the bed frame, a support portion for supporting the options at a first position outward from the outer edge of the bottom in the width direction, and a support device connected to the side of the bed frame and having a support portion. The support portion is movable between a first position on which the options can be attached and a second position inward in the width direction from the first position. The support device has a stopper portion that, when an option is attached to the support portion at the first position, fixes the support portion at the first position in response to the option. Thus, the position of the support portion for attaching the options can be changed, and once the options are attached, the support portion can be fixed in place.

[0012] A bed according to another aspect of the present invention is a bed having a width direction and a length direction, with options detachably attached to the side of the bed. The bed comprises a bed frame, a bottom positioned on the bed frame, a support portion for supporting options located outside the outer edge of the bottom in the width direction, and a support device connected to the side of the bed frame and having the support portion. The support portion is movable between a plurality of different first positions in the width direction, and options can be attached at each of the plurality of first positions. Thus, the support portion can be moved to a plurality of positions in the width direction.

[0013] A bed according to another aspect of the present invention is a bed having a width direction and a length direction, with options detachably attached to the side of the bed. The bed comprises a bed frame, a bottom positioned on the bed frame, a support portion for supporting options located outside the outer edge of the bottom in the width direction, and a support device connected to the side of the bed frame and having the support portion. The support portion is movable between a plurality of different first positions in the length direction, and options can be attached at each of the plurality of first positions. Thus, the support portion can be moved to a plurality of positions in the length direction.

[0014] A bed according to another aspect of the present invention is a bed having a width direction and a length direction, with options detachably attached to the side of the bed. The bed comprises a first frame, a second frame positioned above the first frame and moving up and down relative to the first frame, a bottom positioned on the second frame, a support portion for supporting options located outside the outer edge of the bottom in the width direction, and a support device connected to the side of the second frame and having the support portion. The support device has a fixed portion fixed to the side of the second frame and a movable portion movably connected to the fixed portion. The movable portion has the support portion, and by moving the movable portion relative to the fixed portion, the support portion is movable between a first position on which options can be attached and a second position located further inward in the width direction than the first position. The first frame has an upwardly projecting portion. The fixed portion is fixed to the side of the second frame at a position away from the projecting portion in the length direction. The first position is positioned at a position overlapping the projecting portion in the length direction and away from the projecting portion in the width direction. The second position is located away from the protrusion in the longitudinal direction. The movable part is configured to move the support part between the first and second positions by moving along a path that bypasses the front protrusion. Therefore, even when the second frame is in its lowest position, the support part can be prevented from contacting the protrusion.

[0015] A bed according to another aspect of the present invention has a width direction and a length direction, and options are detachably attached to the side of the bed. The bed comprises a bed frame, a bottom positioned on the bed frame, a plurality of supports that support a plurality of supported parts of the option, located outward from the outer edge of the bottom in the width direction, and a plurality of support devices connected to the side of the bed frame. Each of the plurality of support devices has a plurality of supports, each of which is movable between a first position to which an option can be attached and a second position located inward in the width direction from the first position, the distance between the plurality of supported parts of the option is a first distance, the distance between the plurality of supports that support the plurality of supported parts is a first distance when the plurality of supports are in the first position, and the distance between the plurality of supports is different from the first distance when at least one of the plurality of supports that support the plurality of supported parts is in a position other than the first position. Thus, in an option having a plurality of supported parts, the plurality of support devices can be fixed to the bed by fixing the support holes in each of the first positions. [Effects of the Invention]

[0016] According to the present invention, the position of the support portion for attaching the option can be changed, and the support portion can be fixed in place with the option attached. [Brief explanation of the drawing]

[0017] [Figure 1] Perspective view of the bed according to this embodiment [Figure 2] Plan view of the bed with options supported. [Figure 3] Floor plan of the bed with options removed and stored. [Figure 4] Plan view of the bed frame in a state where options can be supported. [Figure 5] Plan view of the bed frame with options removed and stored. [Figure 6] Side view of the bed frame [Figure 7]Perspective view of the first holder attached to the long frame [Figure 8(a)] Side view for explaining the first holder with the option removed [Figure 8(b)] Side view for explaining the first holder with the option attached [Figure 9(a)] Plan view for explaining the first holder with the option removed [Figure 9(b)] Plan view for explaining the first holder with the option attached [Figure 10] Plan view showing the state of the first holder at a position other than where the option can be attached [Figure 11] Plan view showing a modified example of the first holder [Figure 12] Figure for explaining the attachment state of the side fence 9 when the length of the bed is changed by the first holder in FIG. 11 [Figure 13(a)] Perspective view showing a part of the second holder when the option is removed [Figure 13(b)] Perspective view showing a part of the second holder when the option is attached [Figure 14] Figure showing a part of the second holder in the storage state [Figure 15] Plan view showing the second holder attached to the side part of the bed frame in the movable state [Figure 16] Plan view showing the second holder attached to the side part of the bed frame in the storage state [Figure 17(a)] Side view showing a part of the third holder when the option is removed [Figure 17(b)] Side view showing a part of the third holder when the option is attached [Figure 18] Figure showing the storage state of the third holder [Figure 19] Figure showing a modified example of the third holder [Figure 20] Figure for explaining the movement of the support member that is rotatably connected [Figure 21]A diagram illustrating the movement of a slidably connected support member. [Figure 22] A diagram illustrating the movement of a slidably connected support member. [Modes for carrying out the invention]

[0018] <Bed configuration> One embodiment of the present invention will be described below. The bed according to this embodiment will be described with reference to Figures 1-6, 20-22, etc.

[0019] Figure 1 is a perspective view of the bed 1 according to this embodiment. Figure 2 is a plan view of the bed 1 in a state where the options can be supported. Figure 3 is a plan view of the bed 1 with the options removed and stored. Figure 4 is a plan view of the bed frame 2 in a state where the options can be supported. Figure 5 is a plan view of the bed frame 2 with the options removed and stored. Figure 6 is a side view of the bed frame 2. In the following description, an example using side rails 9 as an option may be shown. However, the options are not limited to side rails 9.

[0020] The bed 1 according to this embodiment is a bed used in medical and nursing care settings such as hospitals, nursing homes, and private residences. The bed 1 is formed in a roughly rectangular shape with a vertical elongation in plan view, in order to support the body of a person lying down, such as a patient, and has a width direction and a length direction. In this specification, the length direction of the bed 1 is simply referred to as the length direction, and the direction opposite to the length direction of the bed 1 is simply referred to as the width direction. In addition, the length direction may be described as front and back or vertical, and the width direction as left and right or horizontal. Furthermore, when referring to the direction of a specific part or component, it may be described as "the XX direction of the XX part," etc.

[0021] As shown in Figure 1, the bed 1 comprises a bed frame 2 and a base 3 provided on the bed frame 2. When the bed 1 is in use, a bed mattress (not shown) is placed on the base 3 on which the person lying down rests.

[0022] As shown in Figure 6 and other figures, the bed frame 2 comprises a base frame 21, a main frame 23 positioned above the base frame 21, and a lifting mechanism 22 positioned between the base frame 21 and the main frame 23, which allows the main frame 23 to move up and down.

[0023] As shown in Figures 4 and 5, the main frame 23 is a roughly rectangular frame in plan view, with a pair of long frames 231 and short frames 232. The width of the main frame 23 is determined by the width dimension between the pair of long frames 231 and is shorter than the width of the bottom 3. In addition, the headboard 4 and footboard 5 are detachably positioned at the front and rear ends of the main frame 23, respectively.

[0024] The bottom 3 is mounted on the main frame 23 and is movable up and down in conjunction with the main frame 23. The bottom 3 is formed to be separable and connectable to one another. Specifically, as shown in Figure 1, the bottom 3 has multiple elements such as a back bottom 31, a waist bottom 32, and knee / leg bottoms 33, and these elements are connected in the longitudinal direction from the head side in the order of back bottom 31, waist bottom 32, and knee / leg bottoms 33. The bottom 3 is configured so that the angles of the back bottom 31 and knee / leg bottoms 33 can be changed with respect to the waist bottom 32. Furthermore, the back bottom 31 has an upper back bottom 31a and a lower back bottom 31b that are connected in the longitudinal direction and whose angles can be changed relatively. Similarly, the knee / leg bottom 33 has an upper leg bottom 33a and a lower leg bottom 33b that are connected in the longitudinal direction and whose angles can be changed relatively. In other words, each part of the bottom 3 is relatively flexible.

[0025] As shown in Figures 4, 5, and 6, the base frame 21 is formed in a roughly rectangular shape with an elongated vertical form in plan view. The base frame 21 also has protruding parts that extend upward. These protruding parts are, for example, legs with casters 6. The bed 1 is movable by having legs with casters 6 at its four corners. The legs with casters 6 may be fitted with stoppers (not shown) to restrict the movement of the bed 1. The legs with casters 6 are formed, for example, by connecting caster support parts 213 that support the casters 6 to the front and rear ends of the vertical frames 211 of the base frame 21. The caster support parts 213 are formed to protrude upward from the base frame 21 so as to support the casters 6 while positioning the vertical frames 211 close to the floor surface. In the illustrated example, each caster support part 213 is formed in a roughly quarter-circular shape, with the caster 6 supported below the upper end 213a and the vertical frame 211 connected to the lower end 213b. As a result, the base frame 21 is positioned so that the vertical frame 211 is close to the floor surface. Since the lifting mechanism 22 and the like are positioned between the base frame 21 and the main frame 23, positioning the vertical frame 211 close to the floor surface makes it possible to lower the bottom position 3 on the main frame 23 as much as possible. In other words, it is possible to lower the bed 1. Although the protruding part has been described as a leg with casters 6, the leg may not have casters, and the protruding part may be something other than a leg.

[0026] The width of the base frame 21 can be set in any way, but in this example, it is formed to be approximately the same as or slightly narrower than the width of the bottom 3. <Arrangement of bed support parts>

[0027] The bed 1 is provided with support holes 7, which serve as support parts capable of supporting options. The support holes 7 are capable of supporting options outside the outer edge 3a of the bottom 3 in the width direction and are movable between a position capable of supporting options and a position inward in the width direction from the option-supporting position. More specifically, the support holes 7 are movable between a position capable of supporting options and a position inward in the width direction from the outer edge 3a of the bottom 3. When the support holes 7 are inward from the outer edge 3a of the bottom 3 in the width direction, they are housed below the bottom 3.

[0028] Furthermore, multiple support holes 7 may be provided on the side of the bed 1. The multiple support holes 7 are provided at predetermined intervals in the longitudinal direction when they are in a position to support the options. In this embodiment, for example, as shown in Figures 2 and 4, each long frame 231 is provided with five support holes 7, and the distance L1 between adjacent support holes 7 is equal so that the legs 9b of the optional side rail 9 can be inserted into any two adjacent support holes 7 when in the movable state.

[0029] Each support hole 7 is provided in the holder 8, which serves as a support device. The holder 8 is connected to the side of the bed frame 2. Specifically, as shown in Figures 2 and 3, for example, the holder 8 is connected to the elongated frame 231 such that the support holes 7 are located on the outer side in the width direction of the main frame 23. The holders 8 are also connected to the elongated frame 231 at intervals in the length direction. In this embodiment, the support holes 7 of each holder 8 are formed to penetrate vertically so as to be able to support the legs 9b of the optional side rail 9.

[0030] In the following, the state in which the support hole 7 is in a position capable of supporting the option, as shown in Figures 2 and 4, is referred to as the movable state, and the state in which the support hole 7 is in a position stored under the bottom 3, as shown in Figures 3 and 5, is referred to as the stored state.

[0031] For example, as shown in Figure 2, the optional side rail 9 is provided with two legs 9b below the side rail body 9a, with a predetermined distance L1 between them in the longitudinal direction. For example, when the two holders 8 supporting the side rail 9 are in a movable state, it is desirable that the distance between two longitudinally adjacent support holes 7 be adjusted to correspond to the distance L1 between these legs 9b. In Figure 2, L1 is shown as the distance between the legs 9b of the side rail 9 and the corresponding distance between the support holes 7 (between the dotted lines), and L2 is shown as the distance in the width direction between the bottom outer edge 3a and the support holes 7 (the positions of the longitudinally aligned support holes 7 are shown by the dashed lines).

[0032] Furthermore, as shown in Figure 4, for example, the holder 8 may be provided so that its longitudinal direction is aligned with the width direction, or it may be provided so that it has a certain angle when the width direction is used as a reference. For this reason, the distance between the mounting positions P1 of adjacent holders 8 on the long frame 231 may not be the predetermined distance L1. In Figure 4, the distance between the mounting position P1 of the holder 8 in the center of the length direction and the mounting position P1 of the adjacent holder 8 corresponds to the predetermined distance L1, and the distance between the mounting position P1 of each holder 8 at the front and rear ends of the length direction and the mounting position P1 of the adjacent holder 8 is shorter than the predetermined distance L1. Since each holder 8 at the front and rear ends of the length direction is adjacent to the castered legs (caster 6 and caster support 213), if it is attached to the long frame 231 at the predetermined distance L1 between the support holes 7, there is a risk of interference with the castered legs (caster 6 and caster support 213) or other protrusions of the base frame 21. Furthermore, if the support hole 7 is to be housed under the bottom 3, there is a high risk of interference with these components.

[0033] In other words, each holder 8 at the front and rear ends in the longitudinal direction is fixed to the side of the main frame 23 at a position away from the protrusion in the longitudinal direction, and the position of the support hole 7 in the movable state (optional support position) can be positioned at a position that overlaps with the protrusion in the longitudinal direction and away from the protrusion in the width direction. Also, the position of the support hole 7 in the stored state can be positioned away from the protrusion in the longitudinal direction. The support hole 7 can be moved between the positions of the movable state and the stored state by moving through a path that bypasses the protrusion. With this arrangement, even when the bottom 3 or main frame 23 is lowered to its lowest position, the holders 8 at the front and rear ends can be prevented from interfering with these protrusions in both the movable state and the stored state.

[0034] In this embodiment, all of the support parts for the options in the bed 1 are made up of support holes 7 in the holder 8. With this configuration, when the options are removed, all of the holder 8 can be stored under the bottom 3. As a result, when the options are removed, the bed width can be narrowed compared to a bed in which at least a portion of the support parts on the side of the bed is fixed to the outside of the bottom 3 (i.e., some of the support parts cannot be stored under the bottom 3). Note that not all of the support parts of the bed 1 need to be made up of support holes 7 in the holder 8; depending on the specifications of the bed 1, some may be fixed to the outside of the bottom 3.

[0035] The support hole 7 may support options at multiple positions outward from the outer edge 3a of the bottom 3 in the width direction. For example, the option-supporting positions P2 may be at multiple different positions in the length direction. In this case, the holder 8 may be configured such that the support hole 7 can move between each option-supporting position P2 at a predetermined position in the width direction, so that the position of the support hole 7 in the length direction can be changed. Furthermore, the support hole 7 may also be movable between these option-supporting positions P2 and positions inward in the width direction from the outer edge 3a of the bottom 3. For example, as shown in Figure 20, the holder 8 may have only one option-supporting position P2 of the support hole 7 (front holder 8), or it may have multiple options (rear holder 8). It is desirable that the distance between the option-supporting position P2 of the support hole 7 and the outer edge 3a of the bottom 3 in the width direction be a predetermined interval L2.

[0036] In this way, by allowing the holder 8 to have optional support positions P2 of the support hole 7 at multiple different positions in the longitudinal direction, it can be used with beds of different lengths or beds that can be changed or selected to different lengths without changing the mounting position of the holder 8. For example, the holder 8 can be used with beds that are extendable in the longitudinal direction, as shown in Figure 12. Figure 12(a) shows a bed where the bed frame 2 (long frame 231 in the illustrated example) is extended forward, but even in such a case, the gap between the side rail 9 and the headboard 4 can be set in the same way as the bed in Figure 12(b) where the bed frame 2 (231) is not extended. This makes it possible to prevent injuries from falls of occupants lying down or from parts of the body, such as the neck, getting caught in this gap, even with beds that can be changed to different lengths.

[0037] The support holes 7 may be capable of supporting options at multiple positions outward from the outer edge 3a of the bottom 3 in the width direction. For example, there may be multiple different option-supporting positions P2 set in the width direction. In this case, the holder 8 may be designed so that the position of the support holes 7 in the width direction can be changed, and the support holes 7 may be movable between each option-supporting position P2 at a predetermined position in the length direction. Furthermore, the support holes 7 may also be movable between these option-supporting positions P2 and positions inward from the outer edge 3a of the bottom 3 in the width direction. For example, as shown in Figure 21, the holder 8 may have only one option-supporting position P2 of the support holes 7, or as shown in Figure 22, there may be multiple option-supporting positions P2 of the support holes 7. It is desirable that the distance between the option-supporting position P2 and the outer edge 3a of the bottom 3 in the width direction be a predetermined interval L2.

[0038] In this way, by allowing the holder 8 to set multiple optional support positions P2 of the support hole 7 in the width direction, it can be used with beds of different widths, or beds whose width can be changed or selected, without changing the mounting position of the holder 8. <Holder configuration and arrangement>

[0039] Figure 20 illustrates the movement of a movable member M that is rotatably connected to a fixed member F. Figures 21 and 22 illustrate the movement of a movable member M that is slidably connected to a fixed member F. In the figures, the movable member M is shown by a dotted line as an example of its movable position. The outer edge 3a of the bottom 3 is also shown by a dotted line, and auxiliary lines illustrating the optional support positions of the support holes 7 are shown by dashed lines.

[0040] The holder 8 is movably mounted on the side of the bed frame 2. Specifically, for example, the holder 8 has a fixing member F fixed to the elongated frame 231 and a movable member M having a support hole 7 for supporting an optional supported part (e.g., the leg portion 9b of the side rail 9), and the movable member M is movably connected to the fixing member F.

[0041] The fixing member F is a member for movably attaching the movable member M to the outside of the side of the bed frame 2. The base end of the fixing member F is fixed to the elongated frame 231 and extends outward in the width direction. For example, in the illustrated example, the longitudinal direction of the fixing member F is aligned with the width direction.

[0042] The movable member M has its base end connected to the other end of the fixed member F, and the other end is provided with a support hole 7 and is formed to be movable as a free end. In the movable state, the movable member M may be positioned so that its longitudinal direction is along the width direction, or it may be positioned in a direction that has a certain angle with respect to the width direction.

[0043] Furthermore, in the stored state, as mentioned above, the support holes 7 of the holder 8 can be located below the bottom 3. For example, as shown in Figure 5, in the stored state, the movable members M (83, 84, etc.) may be folded relative to the fixed members F (81, 82, etc.) and stored below the bottom 3 substantially parallel to the long frame 231. Also, as shown in the illustrated example, in a bed 1 having multiple holders 8, when the options are removed, all of these multiple holders 8 can be stored below the bottom 3.

[0044] Furthermore, the holder 8, which can set multiple optional support positions P2 that differ in the longitudinal direction, may be configured such that the movable member M is able to move between each optional support position P2.

[0045] Furthermore, the holder 8, which can set multiple option-supporting positions P2 that differ in the width direction, may be configured such that the movable member M can move between each option-supporting position P2.

[0046] In this embodiment, an example is shown in which the movable member M is connected to the fixed member F in a rotatable or slidable manner. However, the movable member M may be moved by any other method.

[0047] The movement of the movable member M, which is rotatable relative to the fixed member F, will be described below. For example, as shown in Figure 20, the movable member M is rotatable relative to the fixed member F via a connecting shaft J. The movable member M is configured such that at least the support hole 7 rotates between an optional supportable position P2 in the movable state and a stored position in the stored state. The stored position may be any position within the outer edge 3a of the bottom 3 in the width direction.

[0048] The holder 8 has one or more optional support positions P2. Figure 20 (front) shows an example of the movement of the holder 8 having one optional support position P2. As in this example, the movable member M may, but is not limited to, be positioned such that its longitudinal direction aligns with the width direction (also aligns with the longitudinal direction of the fixed member F in the illustrated example) at the optional support position P2. For example, the movable member M may be positioned such that its longitudinal direction is at an angle to the width direction at the optional support position P2.

[0049] Figure 20 (rear) shows an example of a holder 8 having two optional support positions P2. As in this example, the longitudinal direction of the movable member M is angled front to back with respect to the width direction at the optional support positions P2. This allows the selection of the two optional support positions P2 without changing the distance L2 between the bottom outer edge 3a and the support hole 7. It is desirable to change the length of the movable member M so that the distance between the support hole 7 and the long frame 231 at this position P2 becomes a predetermined distance L3.

[0050] The movement of the movable member M, which is slidable relative to the fixed member F, will be described below. For example, as shown in Figure 21, the movable member M is slidable relative to the fixed member F. It is desirable that the support hole 7 of the movable member M is configured to slide between an optional supportable position P2 in the movable state and a stored position in the stored state. The stored position may be any position within the outer edge 3a of the bottom 3 in the width direction.

[0051] The holder 8 has one or more optional support positions P2. Figure 21 shows an example of a holder 8 having one optional support position P2. For example, as in the holder 8 in Figure 21 (front), the movable member M may be positioned so that its longitudinal direction is along the width direction at the optional support position P2. Alternatively, as in the holder 8 in Figure 21 (rear), the movable member M may be positioned so that its longitudinal direction is at an angle to the width direction at the optional support position P2.

[0052] It is desirable that the distance between the support hole 7 and the outer edge 3a of the bottom 3 at position P2 of the movable member M is a predetermined distance L2. In addition, the length of the movable member M may be adjusted so that the distance between the support hole 7 and the long frame 231 in the width direction is a predetermined distance L3, regardless of the angle at which it is set.

[0053] Furthermore, as shown in Figure 22, the movable member M may be capable of moving between multiple option-supporting positions P2. The movable member M in Figure 22 (front) is an example in which it is slidable in its longitudinal direction and can move between multiple option-supporting positions P2 in the width direction. The movable member M in Figure 22 (rear) is an example in which it is slidable in its longitudinal direction and can move between multiple option-supporting positions P2 at an angle to the width direction. Note that the holder 8 only needs to be configured to slide between multiple option-supporting positions P2, and does not need to slide all the way to the storage position in the stored state.

[0054] The movable member M has a stopper portion 10. The stopper portion 10 is movably connected to the movable member M and is configured to move in conjunction with the option when an option is attached to the support hole 7, which is located at the option-supporting position P2 as the first position, and to engage with the fixing member F, thereby fixing the support hole 7 at the option-supporting position P2. This fixing is released when the option is removed from the support hole 7. Therefore, when no option is attached to the holder 8, the position of the support hole 7 can be changed, and when an option is attached, the operation of the stopper portion 10 fixes the support hole 7 so that it does not move from that position, allowing the option to be attached stably.

[0055] The provision of stopper portions 10 on each holder 8 allows for the attachment of various options. For example, in this embodiment, a side rail 9 (having two legs 9b) with a distance L1 between two supported parts is shown as an option. However, even with options other than this, when they are attached, the support holes 7 can be fixed at the option-supporting position P2, and this fixing can be released when the option is removed. Therefore, the same effect as above can be obtained. Specifically, for example, it is possible to attach options with one supported part or options with three or more supported parts. Furthermore, for example, even if an option has multiple supported parts and the distance between adjacent supported parts is not the predetermined distance L1, it can be accommodated as long as the multiple support holes 7 on the side of the bed frame 2 corresponding to these parts are each at the option-supporting position P2.

[0056] The holder 8 is configured to prevent the option from being attached to the support hole 7 at any position other than the option-supporting position P2. This ensures that the bed 1 can only attach the option at the appropriate position, and prevents the option from being attached at any other inappropriate position. <Configuration of Holder 8>

[0057] In the following examples, the holder 8 will be described in several embodiments with reference to Figures 7-19. The first holder 8A, the second holder 8B, and the third holder 8D will be described as examples. Note that options are omitted from the illustrations in all figures except Figure 12. <First holder>

[0058] Figure 7 is a perspective view of the first holder 8A attached to the long frame 231. Figure 8(a) is a side view illustrating the first holder 8A with the option removed. Figure 8(b) is a side view illustrating the first holder 8A with the option attached. Figure 9(a) is a top view illustrating the first holder 8A with the option removed. Figure 9(b) is a top view illustrating the first holder 8A with the option attached. Figure 10 is a top view showing the state of the first holder 8A at a position other than the option-supporting position. Note that in Figures 9 and 10, the movable member 83 and cover C1 other than the stopper portion 10 are shown in line diagrams so that the state of the stopper portion 10 inside the movable member 83 can be visualized, whereas in Figure 8, the cover C1 is omitted and the movable member 83 other than the stopper portion 10 is shown in line diagrams. Also, in Figures 8 to 10, the internal state of the stopper portion 10 is shown in a semi-transparent state so that the internal state can be visualized. Additionally, options are not shown in the diagram.

[0059] As shown in Figure 7, the first holder 8A has a movable member 83(M) that is rotatably connected to a fixed member 81(F) via a connecting shaft 85.

[0060] The fixed member 81 has an arm 81a, a joint 81b, and a connecting portion 87. One end of the arm 81a, which extends outward in the width direction, is fixed to the long frame 231 by the joint 81b, and the other end of the arm 81a is connected to the movable member 83 via the connecting portion 87. In the illustrated example, the arm 81a is provided parallel to the width direction, but this is not limited to this configuration.

[0061] The movable member 83 has a cylindrical movable body 832 having a support hole 7 that penetrates in the vertical direction, and an arm 834 extending from the movable body 832. The movable body 832 is attached to one end of the arm 834, and a cylindrical portion 834a is provided at the other end of the arm 834 through which a connecting shaft 85 can be inserted in the vertical direction. As shown in the illustrated example, a cover C1 may be provided that covers the movable body 832 and a part of the arm 834.

[0062] The connecting portion 87 is the part where the fixed member 81 and the movable member 83 are connected. For example, one end of the connecting portion 87 is formed to fix the arm 81a, and the other end has upper and lower connecting pieces 871 that sandwich the movable member 83. The upper and lower connecting pieces 871 are each provided with through holes through which the connecting shaft 85 is inserted in the vertical direction (not shown).

[0063] The tip of the upper connecting piece 871 in the longitudinal direction of the fixing member 81 is formed in a substantially semicircular shape in plan view and has an arc-shaped outer edge 872. In the illustrated example, when attached to the long frame 231, the outer edge 872 is located at the tip of the fixing member 81 in the width direction. The outer edge 872 is formed in an arc shape concentric with the connecting shaft 85, along the line of movement of the movable body 832 of the movable member 83 which rotates around the connecting shaft 85. A recess 876, which serves as a first positioning part, is formed approximately in the center of the outer edge 872 and along the longitudinal direction of the fixing member 81. The recess 876 is provided so as to be along the width direction of the bed 1.

[0064] A stopper portion 10 is provided on the movable member 83. Specifically, as shown in Figure 8, the stopper portion 10 comprises a fixed portion 13 fixed to the arm 834 and a sliding portion 11 that can slide in the longitudinal direction of the fixed portion 13. The fixed portion 13 is provided with a spring 132 as an elastic member in its longitudinal direction, and the sliding portion 11 has a pressing portion 115 that receives biasing from the spring 132 toward the front (support hole 7 side) in its longitudinal direction. In addition, a tongue-shaped projection 111 as a first engaging portion is formed at one end of the sliding portion 11 in the longitudinal direction, and a downwardly projecting convex portion 113 as a second engaging portion is formed at the other end of the sliding portion 11 in the longitudinal direction. In other words, as the sliding portion 11 slides in its front-rear direction relative to the fixed portion 13, the projection 111 and the convex portion 113 move back and forth in the longitudinal direction of the stopper portion 10.

[0065] The movable part body 832 has an opening 832a into which the projection 111 of the sliding part 11 can be inserted. When the option is removed from the first holder 8A, the spring 132 biases the sliding part 11 toward the longitudinal front (towards the support hole 7) relative to the fixed part 13, and the projection 111 protrudes from the opening 832a into the inside of the support hole 7.

[0066] When an option is attached to the first holder 8A and its supported portion (for example, the leg portion 9b of the side rail 9) is inserted into the support hole 7, the supported portion presses the projection 111 outward from the support hole 7, and the pressing portion 115 resists the biasing force of the spring 132, causing the sliding portion 11 to move toward the rearward side in the longitudinal direction of the fixed portion 13 (towards the connecting shaft 85). As a result, as shown in Figure 7, the convex portion 113 of the sliding portion 11 is accommodated in the recess 876 of the outer edge portion 872, and in this state, the movable member 83 is fixed to the fixed member 81. In this state, the position of the support hole 7 with respect to the bed 1 is fixed to the position P2 in which the option can be supported. In the illustrated example, as mentioned above, the recess 876 is located along the longitudinal direction of the fixed member 81, so the movable member 83 is fixed in the direction along the fixed member 81. The position of the support hole 7 is fixed with respect to the fixed member 81 in the direction along the width direction of the bed 1.

[0067] Furthermore, as shown in Figure 10, for example, because the outer edge portion 872 is formed in an arc shape, the sliding portion 11 cannot move backward in the longitudinal direction of the movable member 83 in the portion excluding the recess 876. As a result, the projection 111 in the insertion hole 7 gets in the way, preventing the insertion of the optional supported portion into the insertion hole 7. Therefore, the movable member 83 is not fixed to the fixing member 81 at positions other than the optional supported position P2.

[0068] When the first holder 8A is in the stored position, the movable member 83 is stored below the bottom 3 in a plan view. In the illustrated example, the stored position is when the movable member 83 is approximately parallel to the long frame 231. Therefore, in the stored position, the width of the bed 1 is approximately equal to the width of the bottom 3.

[0069] Furthermore, when the first holder 8A is in a movable state, at least the movable body 832 of the movable member 83 is located outward in the width direction from the outer edge 3a of the bottom 3, and the movable member 83 is positioned and fixed with respect to the fixing member 81. Therefore, in the movable state, the width of the bed 1 is wider than the width of the bottom 3.

[0070] In the illustrated example, the movable member 83 is provided with a cover C1. The cover C1 covers the movable body 832 and a portion of the arm 834, preventing the stopper portion 10 from falling off the movable member 83. However, the cover C1 is not an essential component. Alternatively, the movable member 83 may be provided with a means to prevent the stopper portion 10 from falling off instead of the cover C1. <Variations of the first holder>

[0071] A modified version of the first holder 8A will be described. Figure 11 is a plan view showing a modified version of the first holder. In the following description, the modified version of the first holder 8A will be referred to as holder 8F, and parts similar to those of holder 8A will be given the same reference numerals.

[0072] In the holder 8F, a connecting portion 187 is used instead of the connecting portion 87. The connecting portion 187 differs from the connecting portion 87 in that a plurality of recesses 1876 are formed on its upper connecting piece 1871 as positioning portions, but otherwise it is the same as the connecting portion 87.

[0073] The upper connecting piece 1871 has an outer edge 1872 formed in an arc shape to guide the movement of the movable part body 832 which rotates around the connecting shaft 85. Multiple recesses 1876 are formed in the outer edge 1872. In the illustrated example, two recesses 1876 are formed on the outer edge 1872 at a predetermined distance from a position along the longitudinal direction of the fixing member 81. That is, each recess 1876 is formed at a predetermined angle from a position along the width direction of the bed 1.

[0074] In the movable state of the holder 8F, the protrusion 113 is housed in one of the recesses 1876, and the movable member 83 is positioned and fixed to the fixed member 81. The movable member 83 is positioned so as to have a predetermined angle with respect to the fixed member 81.

[0075] This allows the position of the support holes 7 in the longitudinal direction of the bed 1 to be changed without changing the mounting position of the holder 8F, as shown in Figure 12. Furthermore, this allows the optional positions to be positioned in the same way relative to predetermined positions (for example, the front and rear ends of the bed 1 where the headboard 4 and footboard 5 are placed, or the center position in the longitudinal direction) even if the length of the bed is changed, for beds of different lengths or beds that can be changed or selected to different lengths. <Second holder>

[0076] Figure 13(a) is a perspective view showing a portion of the second holder 8B when the option is removed. Figure 13(b) is a perspective view showing a portion of the second holder 8B when the option is attached. Figure 14 is a diagram showing a portion of the second holder 8B in the stowed state. Figure 15 is a plan view showing the second holders 8B and 8C attached to the long frame 231 in the movable state. Figure 16 is a plan view showing the second holders 8B and 8C attached to the long frame 231 in the stowed state. In Figures 13 and 14, the movable member 84 other than the stopper portion 40 is shown as a line diagram, and the lines inside the movable member 84 are shown as dotted lines, so that the state of the connecting shaft inside the movable member 84 can be visualized. The connecting portion 88 is also shown in a semi-transparent state so that the internal state can be visualized.

[0077] As shown in Figure 15, the second holder 8B is connected to a movable member 84(M) via a connecting shaft 86, comprising a fixed member 82(F) and a movable member 84(M). The fixed member 82 has an arm 82a, a joint 82b, and a connecting part 88. One end of the arm 82a of the fixed member 82, which extends outward in the width direction, is fixed to the long frame 231 by the joint 82b, and the other end of the arm 82a is connected to the movable member 84 via the connecting part 88.

[0078] As shown in Figure 13, the movable member 84 has a cylindrical movable body 842 having a support hole 7 and an arm 844 extending from the movable body 842. The movable body 842 is attached to one end of the arm 844, and a cylindrical portion 844c is provided at the other end of the arm 844 through which a connecting shaft 86 can be inserted in the vertical direction.

[0079] The connecting portion 88 is the part where the fixed member 82 and the movable member 84 are connected. For example, one end of the connecting portion 88 fixes the arm 82a (not shown), and the other end has upper and lower connecting pieces 881 that sandwich the movable member 84. The upper and lower connecting pieces 881 are each provided with through holes through which the connecting shaft 86 is inserted in the vertical direction (not shown). A notch 883 that opens forward is formed on the longitudinal front of the upper connecting piece 881.

[0080] The connecting piece 881 has a first locking portion 887 formed on one side in its longitudinal direction, which restricts the rotation of the movable member 84 in the direction of transition to the movable state (direction of movement) when the second holder 8B transitions from the stored state to the movable state. In the illustrated example, the first locking portion 887 is formed as a wall erected along the longitudinal direction of the connecting piece 881, between the upper and lower connecting pieces 881, in front of the through hole (connecting shaft 86) in the longitudinal direction of the connecting piece 881. In other words, the first locking portion 887 of the second holder 8B is formed substantially parallel to the arm 885.

[0081] The other side of the connecting piece 881 in the longitudinal direction does not have anything to restrict the rotation of the movable member 84. Therefore, the tip of the arm 885 becomes a second locking portion 882 that restricts the rotation of the movable member 84 in the direction of transitioning to the stored state (storage direction). In other words, in the stored state of the second holder 8B, the movable member 84 is locked by the second locking portion 882.

[0082] As shown in Figure 13, etc., a stopper portion 40 is provided inside the arm 844 of the movable member 84. The stopper portion 40 has a stopper body 45 and a fixed shaft 44 that rotatably fixes the stopper body 45 to the arm 844. The fixed shaft 44 is fixed to both side walls of the arm 844 in a direction opposite to the longitudinal direction of the arm 844. The stopper body 45 has a hole (not shown) through which the fixed shaft 44 is inserted, and when fixed by the fixed shaft 44, it has a first piece 41 located in front of the arm 844 in the longitudinal direction relative to the fixed shaft 44, and a second piece 42 located behind the arm 844 in the longitudinal direction. The first piece 41 is shaped to be insertable into the insertion hole 7 through an opening 844b formed in the movable part body 842. The second piece 42 is shaped to protrude from an opening 844a formed on the upper part of the arm 844.

[0083] In the movable state, the second holder 8B prevents the movable member 84 from rotating in the direction of movement by the first locking portion 887, as shown in Figure 13, for example. At this time, the opening 844a and the notch 883 of the arm 844 are in communication. When the option is removed, as shown in Figure 13(a), the first piece 41 of the stopper portion 40 is inserted into the insertion hole 7 through the opening 844b, and the second piece 42 does not protrude from the opening 844a but is held inside the arm 844.

[0084] Furthermore, when the optional retained portion is inserted into the support hole 7, the first piece 41 is pressed against the retained portion, causing the stopper body 45 to rotate around the fixed shaft 44. As a result, as shown in Figure 13(b), the first piece 41 is housed within the arm 844, and the second piece protrudes from the opening 844a and is inserted into the notch 883, thereby positioning and fixing the movable member 84 with respect to the fixed member 82.

[0085] In the stored state, the second holder 8B, as shown in Figure 14, for example, is prevented from rotating in the direction of movement of the movable member 84 by the second locking portion 882. At this time, the communication between the opening 844a of the arm 844 and the notch portion 883 is released. The state of the stopper portion 40 is the same as when the option shown in Figure 13(a) is removed.

[0086] In this example, the movable member 84 is positioned so that it is aligned with the fixed member 82, or in other words, the movable member 84 is positioned opposite to the bed 1 in the longitudinal direction. <Variations of the second holder>

[0087] In the second holder 8B, the fixing position of the movable member 84 relative to the fixed member 82 and the length of the movable member 84 can be changed as appropriate when the holder 8B is in a movable state. In the following description, a modified example of the second holder 8B will be referred to as holder 8C, and parts that are the same as those of holder 8B will be described using the same reference numbers.

[0088] The first locking portion 889 is formed such that, in the movable state, the movable member 84(M) of the holder 8C is fixed in a direction different from the longitudinal direction of the fixed member 82 (in the illustrated example, a direction different from the width direction as well). For example, in the illustrated example, the first locking portion 889 is formed as a wall erected in a direction different from the longitudinal direction of the connecting portion 88 and the fixed member 82. This eliminates the need to limit the mounting position of the holder 8C.

[0089] In this case, as shown in Figure 20, it is desirable to adjust the length of the arm 844 of the movable member 84 so that the distance between the support hole 7 at the option mounting position and the long frame 231 is a predetermined distance L3. It is also desirable to adjust the length of the arm 844 of the movable member 84 so that the distance between the support hole 7 at the option mounting position and the outer edge 3a of the bottom 3 is a predetermined distance L2. By doing so, the position of the support hole 7 can be defined without having to worry about the mounting position of the fixing member 82 of the long frame 231. <Third holder>

[0090] Figure 17(a) is a side view showing a portion of the third holder 8D with the option attached. Figure 17(b) is a side view showing a portion of the third holder 8D with the option removed. Figure 18 shows the third holder 8D in its stored state. In addition, in Figures 17 and 18, movable members and connecting parts other than the stopper part 70 are shown as line diagrams so that the state of the stopper part can be visualized, and the lines inside each member are represented by dotted lines.

[0091] As shown in Figure 17, etc., the third holder 8D is fixed to the elongated frame 231 so as to be extendable and retractable outward in the width direction from the side of the main frame 23. The third holder 8D is slidably connected to a fixed member 50, for example, by a movable member 60. The fixed member 50 has a hollow arm 51 that extends outward in the width direction, the base end (inner end) of which is fixed to the elongated frame 231 (not shown). The tip (outer end) of the arm 51 is connected to the movable member 60. The movable member 60 has a hollow arm 62 that is slidably provided inward from the tip of the arm 51 of the fixed member 50 in the width direction, and a cylindrical movable body 61 located at the tip (outer end) of the arm 62 and having a support hole 7. A hole 511 is formed in the bottom surface of the arm 51.

[0092] A stopper portion 70 is provided on the movable member 60. The stopper portion 70 is supported by a shaft 72 that passes through both side walls of the arm 62, with the stopper body 71 positioned along the lower part of the arms 51 and 62. A projection 73 is formed on the outer end of the stopper body 71, which can be inserted from below into the support hole 7 of the movable member body 61. A projection 74 is formed on the inner end of the stopper body 71, which can be inserted into the hole 511 when the arm 62 is in a predetermined position relative to the arm 51.

[0093] In the stored state, the third holder 8D may be stored below the bottom 3 in a plan view. In the stored state, for example as shown in Figure 18, the projection 74 of the stopper body 71 is disengaged from the hole 511, and the movable member 60 is slid inward in the width direction (of the bed 1) relative to the fixing member 50. In other words, in the stored state, the projection 74 is located further inward in the width direction (of the bed 1) than the hole 511. In the stored state, the width of the bed 1 is approximately equal to the width of the bottom 3.

[0094] Furthermore, in the movable state, at least the movable body 61 of the third holder 8D is positioned outward in the width direction (of the bed 1) from the outer edge of the bottom 3. When transitioning from the stored state to the movable state, as shown in Figure 17(b), the movable member 60 slides outward in the width direction (of the bed 1) relative to the fixed member 50, and the projection 74 becomes able to pass through the hole 511 on the bottom surface of the fixed member 50.

[0095] In this state, when the optional supported part is inserted into the insertion hole 7 (not shown), as shown in Figure 17(a), the supported part presses the projection 73 from above downward, and the stopper body 71 rotates around the axis 72, causing the projection 74, which has moved upward, to be inserted into the hole 511, thereby fixing the movable member 60 to the fixing member 50. Note that with the option attached, the width of the bed 1 is wider than the width of the bottom 3. <Variation of the third holder>

[0096] Figure 19 shows a modified example of the third holder. The third holder's width (of the bed 1) can be changed when it is in a movable state. In the following description, the modified example of the third holder 8D will be referred to as holder 8E, and parts similar to those of holder 8D will be given the same reference numerals.

[0097] The third holder 8E has multiple holes formed at predetermined intervals on the bottom surface of the fixing member 50 through which the projections 74 are inserted. For example, in the example shown in Figure 19, two holes 513 and 515 are formed on the bottom surface of the fixing member 50 at predetermined intervals in its longitudinal direction. This allows the third holder 8E to adjust the position of the support holes 7 in the width direction (of the bed 1) when in a movable state. In other words, even when the third holder 8E is applied to various beds with different bed widths, the option can be attached to the bottom side at an appropriate position.

[0098] The bed 1 may be provided with, for example, multiple types of holders 8 as described above. For example, the bed 1 shown in Figures 4 and 5 has five holders on each long frame 231. These holders are configured such that the front and rear ends in the longitudinal direction are second holders 8C, the adjacent holders are second holders 8B, and the center is a first holder 8A. Since the front and rear ends in the longitudinal direction are second holders 8C, the movable member 84 is fixed in a direction different from the longitudinal direction of the fixed member 82, and also in a direction different from the width direction. Therefore, it can be configured so as not to interfere with the caster support parts 213 at the four corners.

[0099] In this embodiment, the following configuration described above is adopted.

[0100] (1) In the first view, the bed 1 has a width direction and a length direction, and an option is detachably attached to the side of the bed 1, and comprises a bed frame 2, a bottom 3 disposed on the bed frame 2, a support hole 7 for supporting an option at a first position outward from the outer edge of the bottom 3 in the width direction, and a holder 8 connected to the side of the bed frame 2 and having a support portion. The support hole 7 is movable between the first position P2 on which an option can be attached and a second position inward in the width direction from the first position P2, and the holder 8 has a stopper portion that, when an option is attached to the support hole 7 at the first position P2, moves in response to the option and fixes the support hole 7 at the first position P2. Therefore, the position of the support hole for attaching the option can be changed, and when an option is attached, the stopper can be activated to fix the support hole 7 so that it does not move from that position.

[0101] (2) The holder 8 is configured to prevent the option from being attached to the support hole 7 when the support hole 7 is in a position other than the first position. Therefore, the holder 8 can prevent the option from being attached in a position other than the position in which the option can be attached.

[0102] (3) The holder 8 has multiple first positions P2 at different positions in the width direction, and the support hole 7 is further movable between the multiple first positions, and an option can be attached to each of the multiple first positions, and the stopper is configured to fix the support hole 7 at each of the aforementioned positions. Thus the holder 8 is provided with multiple positions in the width direction of the bed where an option can be attached.

[0103] (4) The support hole 7 has a plurality of first positions P2 at different positions in the longitudinal direction, and the support hole 7 is further movable between the plurality of first positions P2, and an option can be attached to each of the plurality of first positions P2, and the stopper is configured to fix the support hole 7 at each of the aforementioned positions. Thus the holder 8 is provided with multiple positions in the longitudinal direction of the bed where an option can be attached.

[0104] (5) The bed 1 has a plurality of support holes 7, and a plurality of holders 8 each having a plurality of support holes 7, the distance between the plurality of supported parts of the option is a first distance L1, the distance between the plurality of support holes 7 supporting the plurality of supported parts is the distance corresponding to the first distance L1 when the plurality of support holes 7 are in a first position P2, and when the option is attached to the plurality of support holes 7, the plurality of support holes 7 are fixed to the first position P2 in response to each of the plurality of supported parts. Thus the bed 1 can attach and fix an option that has a plurality of holders 8 and a plurality of supported parts.

[0105] (6) When at least one of the support holes 7 that support the multiple support parts of the option is at a position other than the first position P2, the distance between the support holes 7 is different from the first distance L1. This prevents the option from being attached if any of the support holes 7 corresponding to the multiple support parts of the option are misaligned from the first position. In other words, an option with multiple support parts can be attached and fixed in the appropriate position.

[0106] (7) The holder 8 has a fixing member F fixed to the side of the bed frame 2 and a movable member M that is movably connected to the fixing member F, and the support hole 7 is provided in the movable member M. This allows the position of the support hole 7 to be movable while the support hole 7 is fixed to a predetermined position on the side of the bed frame 2.

[0107] (8) The stopper portion is movably connected to the movable member M, and when an option is attached to the support hole 7 located at the first position P2, it moves in conjunction with the option and engages with the fixing member F, thereby fixing the support hole 7 at the first position. This allows the support hole 7 to be fixed with a simple configuration.

[0108] (9) The movable member M is equipped with an arm, one end of which is rotatably connected to the fixed member F, and the other end of the arm is provided with a support hole 7. This makes the support hole 7 rotatable on the side of the bed frame 2.

[0109] (10) The movable member M is equipped with an arm, which is slidably connected to the fixed member F, and the arm is provided with a support hole 7. This makes the support hole 7 slidably movable on the side of the bed frame 2.

[0110] (11) In a second view, the bed 1 has a width direction and a length direction, and options are detachably attached to the side of the bed, comprising a bed frame 2, a bottom 3 positioned on the bed frame, support holes 7 for supporting options located outside the outer edge 3a of the bottom 3 in the width direction, and a holder 8 connected to the side of the bed frame 2 and having the support holes 7. The support holes 7 are movable between a plurality of different first positions P2 in the width direction, and options can be attached at each of the plurality of first positions P2. This allows the support holes 7 to be moved to multiple positions in the width direction of the bed 1. For example, in a bed 1 for which several width dimensions can be selected, options can be attached at different positions in the width direction according to the bed width.

[0111] (12) The bed 1 comprises a plurality of support holes 7 that support a plurality of support parts of the option, and a plurality of holders 8 connected to the side of the bed frame 2, each having a plurality of support holes 7. The distance between the plurality of support parts is a first distance L1, and the distance between the plurality of support holes 7 that support the plurality of support parts is the distance corresponding to the first distance L1 when the plurality of support holes 7 are in a first position P2. When the option is attached to the plurality of support holes 7, the plurality of support holes 7 are fixed in the first position P2 in response to each of the plurality of support parts. This makes it possible to attach an option having a plurality of holders 8 and a plurality of support parts to a bed 1 in which the support holes 7 can be moved to multiple positions in the width direction.

[0112] (13) When at least one of the multiple support holes 7 that support multiple supported parts is at a position P2 other than the first position, the distance between the multiple support holes 7 is different from the first distance L1. This makes it possible to prevent the option from being installed in a bed 1 in which the support holes 7 can be moved to multiple positions in the width direction if any of the multiple support holes 7 corresponding to the optional multiple supported parts are shifted from the first position. In other words, an option with multiple supported parts can be installed in the appropriate position.

[0113] (14) The support hole 7 is movable between a plurality of first positions P2 and a second position inside the outer edge 3a of the bottom 3 in the width direction. This allows the support hole 7 to be housed below the bottom 3 in a bed 1 in which the support hole 7 can be moved to multiple positions in the width direction.

[0114] (15) In a third view, the bed 1 has a width direction and a length direction, and options are detachably attached to the side of the bed, comprising a bed frame 2, a bottom 3 positioned on the bed frame 2, support holes 7 for supporting options located outside the outer edge 3a of the bottom 3 in the width direction, and a holder 8 connected to the side of the bed frame 2 and having the support holes 7. The support holes 7 are movable between a plurality of different first positions P2 in the length direction, and options can be attached at each of the plurality of first positions P2. This allows the support holes 7 to be moved to multiple positions in the length direction of the bed 1. For example, in a bed 1 for which several length dimensions can be selected, options can be attached at different positions in the length direction according to the length of the bed.

[0115] (16) The bed 1 comprises a plurality of support holes 7 that support a plurality of support parts of the option, and a plurality of holders 8 connected to the side of the bed frame 2, each having a plurality of support holes 7. The distance between the plurality of support parts is a first distance L1, and the distance between the plurality of support holes 7 that support the plurality of support parts is the distance corresponding to the first distance L1 when the plurality of support holes 7 are in a first position P2, and when the option is attached to the plurality of support holes 7, the plurality of support holes 7 are fixed to the first position P2 in response to each of the plurality of support parts. This makes it possible to attach an option having a plurality of holders 8 and a plurality of support parts to a bed 1 in which the support holes 7 can be moved to multiple positions in the longitudinal direction.

[0116] (17) When at least one of the support holes 7 that support multiple supported parts is in a position other than the first position P2, the distance between the support holes 7 is different from the first distance L1. This makes it possible to prevent the option from being attached in a bed 1 in which the support holes 7 can be moved to multiple positions in the longitudinal direction if any of the support holes 7 corresponding to the optional multiple supported parts are misaligned from the first position. In other words, an option with multiple supported parts can be attached in the appropriate position.

[0117] (18) The support hole 7 is movable between a plurality of first positions P2 and a second position inside the outer edge 3a of the bottom 3 in the width direction. This allows the support hole 7 to be housed below the bottom 3 in a bed 1 in which the support hole 7 can be moved to multiple positions in the length direction.

[0118] (19) In a fourth view, the bed 1 has a width direction and a length direction, and options are detachably attached to the side of the bed, and comprises a base frame 21, a main frame 23 positioned above the base frame 21 and moving up and down relative to the base frame 21, a bottom 3 positioned on the main frame 23, support holes 7 for supporting options outside the outer edge 3a of the bottom 3 in the width direction, and a holder 8 connected to the side of the main frame 23 and having the support holes 7. The holder 8 comprises a fixed member F fixed to the side of the main frame 23 and a movable member M movably connected to the fixed member F, the movable member M having the support holes 7, and the movable member M moving relative to the fixed member F allows the support holes 7 to move between a first position P2 on which options can be attached and a second position located further inward in the width direction than the first position. The base frame 21 has an upwardly projecting portion, and the fixing member F is fixed to the side of the main frame 23 at a position away from the projection portion in the longitudinal direction. The first position P2 is located at a position that overlaps with the projection portion in the longitudinal direction and is located away from the projection portion in the width direction, and the second position is located away from the projection portion in the longitudinal direction. The movable member M is configured to move the support hole between the first position P2 and the second position by moving through a path that bypasses the projection portion. This makes it possible to change the position of the support hole for option mounting in the bed 1 as the bottom 3 rises and falls, and prevents the support hole 7 from coming into contact with the projection portion even when the main frame 23 is in its lowest position.

[0119] (20) The holder 8 has a stopper portion that fixes the support hole 7 in the first position P2 when the option is supported in the support hole 7. As a result, when the option is attached to the bed 1 in which the bottom 3 moves up and down, the stopper can be activated to fix the support hole 7 so that it does not move from that position.

[0120] (21) The protrusions are castered legs of the bed, legs, or support parts that support them, which are provided at the four corners of the base frame. This ensures that the support holes 7 do not come into contact with the casters, legs, or support parts that support them of the bed, even when the main frame 23 is in its lowest position in the bed 1, which is raised and lowered by the bottom 3.

[0121] (22) In a fifth view, the bed 1 has a width direction and a length direction, and options are detachably attached to the side of the bed, and comprises a bed frame 2, a bottom 3 disposed on the bed frame 2, a plurality of support holes 7 that support a plurality of supported parts of the option, located outward from the outer edge 3a of the bottom 3 in the width direction, and a plurality of holders 8 connected to the side of the bed frame 2. Furthermore, the bed 1 has a plurality of holders 8, each having a plurality of support holes 7. Each of the plurality of support holes 7 is movable between a first position P2 on which an option can be attached and a second position located inward in the width direction from the first position, the distance between the plurality of supported parts of the option is a first distance L1, and the distance between the plurality of support holes 7 that support the plurality of supported parts is the distance corresponding to the first distance L1 when the plurality of support holes 7 are in the first position P2. When at least one of the plurality of support holes 7 that support the plurality of supported parts is in a position other than the first position P2, the distance between the plurality of support holes 7 is different from the first distance L1. This allows the bed 1, which can accommodate options with multiple support parts, to prevent the option from being attached if even one of the support holes 7 is misaligned from the first position P2. In other words, options with multiple support parts can be attached in the appropriate position.

[0122] (23) The first position P2 has multiple different first positions in the width direction. This allows the position in the support hole 7 where the option can be attached to the bed 1, which can be fitted with an option having multiple support parts, to move in the width direction.

[0123] (24) The first position P2 has multiple different first positions in the longitudinal direction, thereby allowing the option mounting position of the support hole 7 to move in the longitudinal direction in a bed 1 to which an option having multiple support parts can be attached.

[0124] (25) Each of the multiple holders 8 has a stopper portion that fixes the support hole 7 in a first position P2 when an option is supported in the support hole 7. Thus, in a bed 1 to which an option having multiple support parts can be attached, each of the multiple holders 8 can fix the support hole 7 in a first position.

[0125] The embodiments described above are merely illustrative for illustrative purposes and are not intended to limit the scope of the present invention to those embodiments only. The present invention can be implemented in various forms different from those described above.

[0126] For example, in this embodiment, the holders of the bed are not limited to the examples described above. Also, while a side rail 9 having two legs 9b at a predetermined interval L1 was given as an example as an option, it is not limited to this. Furthermore, in this embodiment, it is conceivable that the options of the bed 1 may be changed depending on the condition of the person lying down (patient), such as changing the number of side rails 9, changing the installation position, installing side rails of different lengths, installing side rails with different numbers or spacings of legs, or installing options other than side rails. There are various ways to attach options. To accommodate these various situations, multiple support holes 7 may be provided in each long frame 231. Also, the number and spacing of the support holes on each side can be appropriately changed by design depending on the various situations.

[0127] For example, in this embodiment, the fixing member F is formed in an arm shape along the width direction so that it is attached outward toward the long frame 231. However, it is not limited to this shape. Also, the holder 8 can be configured in any way as long as the movable member M is movably attached outward toward the side of the bed frame 2, and in such a configuration, the fixing member may be omitted.

[0128] Furthermore, in this embodiment, for example, the support portion that supports the optional supported portion is shown as a support hole 7, but any configuration is acceptable as long as the option can be attached.

[0129] Furthermore, the holder 8 having multiple option-supporting positions P2 is not limited to this example and can have any configuration. For example, the movable member M is rotatable relative to the fixed member F, and the movable member M itself is expandable and contractible in its longitudinal direction. Various variations can be used to set up the holder 8 to have multiple option-supporting positions P2. [Explanation of Symbols]

[0130] 1…Bed 2…Bed frame 3…Bottom 4…Headboard 5…Footboard 6…Caster 7…Support hole 8…Holder 8A, 8F…First holder 8B, 8C…Second holder 8D, 8E…Third holder 9…Side rail 9a…Side rail body 9b…Leg part 10…Stopper part 11…Sliding part 13…Fixed part 21…Base frame 22…Lifting mechanism 23…Main frame 31…Back bottom 31a…Upper back bottom 31b…Lower back bottom 32…Waist bottom 33…Knee leg bottom 33a…Upper leg bottom 33b…Lower leg bottom 40…Stopper part 41…First piece 42…Second piece 44…Fixed shaft 45…Stopper body 50…Fixed member 51…Arm 60…Movable member 61…Movable part body 62…Arm 70...Stopper part 71...Stopper body 72...Shaft 73...Protrusion 74...Protrusion 81...Fixing member 81a...Arm 81b...Joint part 82...Fixing member 82a...Arm 82b...Joint part 83...Movable member 84...Movable member 85...Connecting shaft 87...Connecting part 88...Connecting part 111...Protrusion 113...Convex part 115...Pressing part 211...Vertical frame 213...Caster support part 213a...Upper end 213b...Lower end 231...Long frame 232...Short frame 832...Movable part body 834...Arm 842...Movable part body 844...Arm 871...Connecting piece 872...Outer edge part 876...Recess 881...Connecting piece 883...Notch part 885...Arm 887...First locking part 187...Connecting part 1871...Connecting piece 1872...Outer edge part 1876...Recess F...Fixing member M...Movable member J...Connecting shaft P1...Mounting position P2...Position where options can be supported

Claims

1. A bed having a width direction and a length direction, and having options that can be detachably attached to the side of the bed, Bed frame and A bottom placed on the aforementioned bed frame, Outward from the outer edge of the bottom in the width direction, a support portion for the option is provided, A support device connected to the side of the bed frame and having the support portion, Equipped with, The support portion has one first position, or is movable between a plurality of different first positions in the width direction. The option can be attached at each of the one or more first positions. The support device has a fixed part that is fixed to the side of the bed frame and a movable part that is movably connected to the fixed part. The movable part has the support part, As the movable part moves relative to the fixed part, the support part becomes movable between each position of the first position and a second position located further inward in the width direction than each position of the first position. The bed frame has a protruding portion that extends upward, The fixing portion is fixed to the side of the bed frame at a position away from the protruding portion in the longitudinal direction. Each of the positions of the first position is located such that it overlaps with the protrusion in the longitudinal direction and is located away from the protrusion in the width direction. The second position is located away from the protrusion in the longitudinal direction. The movable part is configured to move the support part between the first position and the second position by moving through a path that bypasses the protruding part. bed.

2. The above option has a plurality of support parts which support a plurality of supported parts, The bed frame is connected to the side of a plurality of support devices, each having a plurality of support parts, The distance between the plurality of supported parts is the first distance, The distance between the multiple support parts that support the multiple supported parts is the first distance when the multiple support parts are in the first position. When the option is attached to the plurality of support parts, the plurality of support parts are fixed to the first position in response to each of the plurality of supported parts. The bed according to claim 1.

3. When at least one of the support parts that support the plurality of supported parts is in a position other than the first position, The distance between the plurality of support parts is different from the first distance. The bed according to claim 2.

4. At least one of the plurality of support devices has a stopper portion that fixes the support portion in the first position when the option is supported on the support portion. The bed according to claim 2.

5. The bed frame comprises a first frame and It has a second frame positioned above the first frame and moving up and down relative to the first frame, The bottom is placed on the second frame, The first frame has the protruding portion, The support device has a fixed part that is fixed to the side of the second frame and a movable part that is movably connected to the fixed part. The fixing portion is located at a position away from the protruding portion in the longitudinal direction, and is positioned on the second frame. It is fixed to the side of The bed according to any one of claims 1 to 3.

6. The protruding portion is a caster, leg, or support portion of the bed provided at the four corners of the first frame, The bed according to claim 5.

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