Assembled bed

Abstract

To improve operability of assembly work and disassembly work. of a knockdown bed.SOLUTION: In a knockdown bed in which a bed is formed by assembling different members, an engaging hole of one member is insertable in an engaging projection of the other member, and an engaging body is provided at a tip end part of the engaging projection. The engaging body allows the engaging hole to be inserted in the engaging projection by being elastically deformed inward in a radial direction of the engaging hole and, after insertion, the engaging hole is not disengaged from the engaging projection by being elastically deformed (restored) outward in the radial direction of the engaging hole. In the engaging body, a tip end part which is larger than the engaging hole and is elastically deformed inward in the radial direction of the engaging hole is formed with intervals in an outer peripheral direction of a base end part on an outer periphery of the base end part fitted to the engaging projection.SELECTED DRAWING: Figure 6

Description

Technical Field

[0007]

[0001] The present invention relates to an assembled bed formed by assembling different members.

Background Art

[0002] Conventionally, in order to facilitate transportation, beds are configured to be separated into different members such as bases and frameworks, and are assembled beds formed by assembling different members at the installation location or the like (for example, see Patent Document 1).

[0003] <oo00012>In this assembled bed, each member is transported, and different members are assembled and installed at the installation location or the like. Also, when moving the bed to another installation location or the like, the assembled bed is once disassembled into members at the existing installation location or the like, and then different members are assembled and installed again at another installation location or the like. [[ID=1⑧]]

[0004] And in the assembled bed, when assembling different members, the fitting hole of one member is inserted into the fitting convex portion of the other member to connect the different members, and then parts such as split pins, screws, and nuts are attached to the fitting convex portion and the fitting hole so that one member does not fall off from the other member.

[0005] Also, when disassembling into different members, the parts attached to the fitting convex portion and the fitting hole are removed, and then the fitting hole of the other member is removed from the fitting convex portion of one member.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] However, with the conventional modular beds described above, different components had to be connected before parts could be attached during assembly, and parts had to be removed before being separated into different components during disassembly. This resulted in time-consuming and laborious assembly and disassembly processes, making them inefficient to use.

[0008] Furthermore, there was a risk of losing or damaging parts removed during disassembly. [Means for solving the problem]

[0009] Therefore, in the present invention according to claim 1, in an assembly-type bed in which a bed is formed by assembling different components, One member is provided with the other member so that it can rotate vertically. Horizontal of one of the members Extends in the direction The horizontal position of the other member on the shaft-shaped fitting projection Extends in the direction The fitting hole, formed in a through-shape, is rotatably and detachably inserted through the fitting projection. A locking body is provided at the tip of the fitting projection, and the locking body elastically deforms radially inward from the fitting hole, allowing the fitting hole to be inserted through the fitting projection. After insertion, it returns to its original shape radially outward from the fitting hole, preventing the fitting hole from detaching from the fitting projection.

[0010] Furthermore, in the present invention according to claim 2, the fitting projection in the present invention according to claim 1 A screw hole is formed at the tip of the part, and a screw is formed on the disc-shaped locking body, and the locking body is screwed onto the tip of the fitting projection. I decided to do it.

[0011] Furthermore, in the present invention according to claim 3, in the present invention according to claim 1 or claim 2, the locking body has a tip portion on the outer circumference of the base end portion that is attached to the fitting projection portion, which is larger than the fitting hole and elastically deforms toward the radially inward direction of the fitting hole, facing toward the outer circumference of the base end portion. Equal intervals We decided to leave a gap and form it. [Effects of the Invention]

[0012] Furthermore, the present invention provides the following effects.

[0013] In other words, in the present invention, in an assembly-type bed formed by assembling different components, the fitting hole of one component can be inserted into the fitting projection of the other component, and a locking body is provided at the tip of the fitting projection. The locking body elastically deforms toward the radially inward direction of the fitting hole, allowing the fitting hole to be inserted into the fitting projection, and after insertion, it elastically deforms (restores) toward the radially outward direction of the fitting hole, preventing the fitting hole from detaching from the fitting projection. As a result, different components can be assembled or disassembled without attaching or detaching other parts to the components during assembly or disassembly of the assembly-type bed, thereby reducing the time and effort required for assembly and disassembly of the assembly-type bed without losing or damaging other parts, and improving work efficiency.

[0014] In particular, if the fitting projection is formed in an axial shape and the fitting hole is formed to be rotatable on the outer circumference of the fitting projection, the rotational force acting during rotation does not act on the locking body, and the locking body can be applied to the portion where one member rotates relative to the other member.

[0015] Furthermore, if a tip portion, which is larger than the fitting hole and elastically deforms toward the radially inward direction of the fitting hole, is formed on the outer circumference of the base end portion that is attached to the fitting projection of the locking body, at a distance from the outer circumference of the base end portion, the force required when attaching and detaching one member from the other can be reduced, thereby further improving workability. [Brief explanation of the drawing]

[0016] [Figure 1] Plan view (a) and side view (b) showing the modular bed according to the present invention. [Figure 2] Plan view (a) and side cross-sectional view (b) showing the lifting mechanism of a modular bed. [Figure 3] Plan view (a) and side cross-sectional view (b) showing the upper and lower body tilting mechanisms of a modular bed. [Figure 4] A side view of the enlarged cross-section showing the upper body tilting mechanism of a modular bed. [Figure 5]An enlarged side sectional view showing the lower body tilting mechanism of the assembled bed. [Figure 6] An explanatory diagram showing the locking body.

Embodiments for Carrying out the Invention

[0017] Hereinafter, the specific configuration of the assembled bed according to the present invention will be described with reference to the drawings.

[0018] As shown in FIGS. 1 to 3, the assembled bed 1 is provided with a support base 3 detachably (assemblable and separable) on the upper part of the base 2, and a receiving base 4 for supporting the body of a recumbent person is detachably (assemblable and separable) provided on the upper part of the support base 3. Between the base 2 and the support base 3, a lifting mechanism 5 for lifting and lowering the support base 3 (receiving base 4) with respect to the base 2 is provided. Further, between the support base 3 and the receiving base 4, an upper body tilting mechanism 6 for tilting the receiving base 4 on the upper body side with respect to the support base 3 is provided, and a lower body tilting mechanism 7 for tilting the receiving base 4 on the lower body side with respect to the support base 3 is provided. Here, for the sake of convenience, the foot side (the right side in FIG. 1) of the person lying on the assembled bed 1 is referred to as the front side, and the head side (the left side in FIG. 1) is referred to as the rear side for explanation.

[0019] The base 2 has casters 10, 11 attached to the lower front ends and lower rear ends of a pair of left and right base frames 8, 9 extending in the front-rear direction so as to be movable, and connecting frames 12, 13 extending in the left-right direction are attached (fixed) between the front parts and between the rear parts of the left and right base frames 8, 9.

[0020] The support base 3 has boards (foot board 16 and head board 17) detachably attached between the front ends and between the rear ends of a pair of left and right support base frames 14, 15 extending in the front-rear direction, and a connecting frame 18 extending in the left-right direction is attached (fixed) between the middle parts of the left and right support base frames 14, 15.

[0021] The support platform 4 consists of a buttock support platform 19, which is mainly for receiving the load of the buttocks of the person lying down (supporting the buttocks of the person lying down from below); an upper body support platform 20, which is mainly for receiving the load of the upper body (above the buttocks) of the person lying down (supporting the upper body of the person lying down from below); and a lower body support platform, which is mainly for receiving the load of the lower body (below the buttocks) of the person lying down (supporting the lower body of the person lying down from below). This lower body support platform is divided into a thigh support platform 21, which is mainly for receiving the load of the thighs of the person lying down (supporting the thighs of the person lying down from below); and a lower leg support platform 22, which is mainly for receiving the load of the lower legs of the person lying down (supporting the lower legs of the person lying down from below).

[0022] The rear support base 19 is fixed horizontally to the upper center of the support base 3 (support base frame 14, 15).

[0023] The upper body support 20 is provided so as to be able to be tilted relative to the support 3 and the buttock support 19 by pivoting its front end to the upper rear part of the support base 3 (support base frame 14, 15) (rearward from the buttock support 19) so as to be able to rotate up and down. The upper body support 20 may also be divided into a back support for mainly receiving the load of the back (spine) below the shoulders (scapula) of the person lying down (supporting the back (spine) below the shoulders (scapula) of the person lying down from below) and a shoulder support for mainly receiving the load of the shoulders and head above the shoulders (scapula) of the person lying down (supporting the shoulders and head above the shoulders (scapula) of the person lying down from below).

[0024] The lower body support is pivotally attached to the upper front of the support base 3 (support base frame 14, 15) of the support base 3, with the rear end of the thigh support 21 pivotally attached so as to be vertically rotatable. This allows the thigh support 21 to be raised and lowered relative to the support base 3 and the support base 19. The lower body support is also pivotally attached to the front end of the thigh support 21, with the rear end of the lower leg support 22 pivotally attached so as to be vertically rotatable. This allows the lower leg support 22 to be raised and lowered together with the thigh support 21 relative to the support base 3 and the support base 19, and also to be raised and lowered relative to the thigh support 21 (freely flexible). The rear end of the lower leg support 22 moves together with the front end of the thigh support 21, and the front end moves along the upper surface of the support base 3 (support base frame 14, 15).

[0025] The lifting mechanism 5 includes a base-side movable frame 23 that extends in the left-right direction inside the middle section between the base frames 8 and 9, which is attached along the base frames 8 and 9 so as to be movable back and forth, and a support-side movable frame 24 that extends in the left-right direction inside the middle section between the support frames 14 and 15, which is attached along the support frames 14 and 15 so as to be movable back and forth.

[0026] Furthermore, the lifting mechanism 5 has the lower ends of a pair of left and right crossbars 25 and 26 attached to the rear connecting frame 13 and base-side moving frame 23 of the base 2, spaced apart from each other on the left and right so as to be able to rotate up and down, and the upper ends of the crossbars 25 and 26 attached to the rear connecting frame 18 and support-side moving frame 24 of the support base 3, spaced apart from each other on the left and right so as to be able to rotate up and down. The crossbars 25 and 26 are connected in the center so as to be able to rotate up and down.

[0027] Furthermore, the lifting mechanism 5 has an actuator 27 mounted between the center of the connecting frame 12 on the front side of the base 2 and the center of the support base side movable frame 24 so as to be able to rotate up and down. The actuator 27 consists of a motor and a rod, with the motor side (base end) mounted on the connecting frame 12 so as to be able to rotate up and down, and the rod side (tip end) mounted on the support base side movable frame 24 so as to be able to rotate up and down.

[0028] The lifting mechanism 5 is configured to raise and lower the support base 3 (receiving base 4) relative to the base 2 by extending and retracting the rod of the actuator 27. However, the lifting mechanism 5 is not limited to the above configuration; it only needs to be able to raise and lower the support base 3 (receiving base 4) relative to the base 2.

[0029] Here, below the actuator 27 of the lifting mechanism 5, a protective body 28 is provided to protect the actuator 27 from below (to prevent downward forces from directly acting on the actuator 27 above). The protective body 28 is attached to the lower part of the connecting frame 12 in a state where it extends horizontally forward. As a result, when assembling, disassembling, or transporting the modular bed 1, even if the base frames 8 and 9 are placed on the floor before the casters 10 and 11 are attached, the actuator 27 will not be directly subjected to forces from the floor, thus preventing damage or malfunction of the actuator 27. Furthermore, when moving the modular bed 1 after attaching the casters 10 and 11 to the base frames 8 and 9, it is possible to prevent the actuator 27 from colliding with the floor step and being damaged or malfunctioning when it goes over a step in the floor.

[0030] The upper body tilting mechanism 6 has a support frame 29 attached between the rear middle sections of the support base frames 14 and 15, which extends laterally and curves downward and forward in the center. Support arms 30 and 31 are attached to the center of the support frame 29 at intervals to the left and right, extending upward and forward. Between the left and right support arms 30 and 31, the base end (front end) of a movable body 32 that extends in the front-rear direction is pivotally supported so as to be able to rotate up and down, and rollers 33 and 34 are pivotally supported to the left and right of the tip (rear end) of the movable body 32 so as to be able to rotate. The left and right rollers 33 and 34 pivotally supported on the movable body 32 are in contact with the lower part of the upper body support base 20 so as to be able to roll along the upper body support base 20.

[0031] Furthermore, the upper body tilting mechanism 6 has a support frame 35 that extends in the left-right direction attached between the rear ends of the support base frames 14 and 15, and a support body 36 that extends downwards attached to the central part of the support frame 35.

[0032] Furthermore, the upper body tilting mechanism 6 has an actuator 37 mounted between the front lower part of the support 36 and the lower middle part of the movable body 32 so as to be able to rotate up and down. The actuator 37 consists of a motor and a rod, with the motor side (base end) mounted on the support 36 so as to be able to rotate up and down, and the rod side (tip end) mounted on the movable body 32 so as to be able to rotate up and down.

[0033] The upper body tilting mechanism 6 extends and retracts the rod of the actuator 37, allowing the upper body support 20 to be raised and lowered relative to the support base 3, as shown in Figure 4. However, the upper body tilting mechanism 6 is not limited to the above configuration; it only needs to be able to raise and lower the upper body support 20 relative to the support base 3.

[0034] Here, below the actuator 37 of the upper body tilting mechanism 6, a protective body 38 is provided to protect the actuator 37 from below (to prevent downward forces from directly acting on the actuator 37 above). The base end of the protective body 38 is attached to the lower front part of the support body 36 in a bent state toward the front and upward, and the tip end is attached to the central rear part of the support frame 29. In this way, the protective body 38 is installed between the support body 36, which is directly connected to the base end of the actuator 37, and the support frame 29, which is indirectly connected to the tip end of the actuator 37 via support arms 30, 31 and movable body 32. As a result, when assembling, disassembling, or transporting the modular bed 1, even if the support base 3 (upper body tilting mechanism 6) is placed on the floor, forces from the floor will not directly act on the actuator 37, thereby preventing damage or malfunction of the actuator 37. Furthermore, even if a tensile force acts between the support body 36 connected to the base end of the actuator 37 and the support frame 29 connected to the tip end of the actuator 37 when the actuator 37 is moving (extending or retracting), the protective body 38 can absorb the tensile force, preventing deformation or damage to the support body 36 or the support frame 29, as well as failure of the moving actuator 37.

[0035] The lower body activation mechanism 7 has a support frame 39 that extends in the left-right direction attached between the front of the middle sections of the support base frames 14 and 15, and support arms 40 and 41 that extend upward and forward are attached to the center of the support frame 39 at a distance from each other. Between the left and right support arms 40 and 41, the base end (rear end) of a movable body 42 that extends in the front-rear direction is pivotally supported so as to be able to rotate up and down, and rollers 43 and 44 are pivotally supported on the left and right sides of the tip (front end) of the movable body 42 so as to be able to rotate. The left and right rollers 43 and 44 pivotally supported on this movable body 42 are in contact with the lower part of the thigh support 21 so as to be able to roll along the thigh support 21.

[0036] Furthermore, the lower body tilting mechanism 7 has a support frame 45 that extends in the left-right direction attached between the rear of the middle section of the support base frames 14 and 15, and a support body 46 that extends downwards attached to the central part of the support frame 45.

[0037] Furthermore, the lower body tilting mechanism 7 has an actuator 47 mounted between the front lower part of the support 46 and the lower rear part of the movable body 42 so as to be able to rotate up and down. The actuator 47 consists of a motor and a rod, with the motor side (base end) mounted on the support 46 so as to be able to rotate up and down, and the rod side (tip end) mounted on the movable body 42 so as to be able to rotate up and down.

[0038] The lower body tilting mechanism 7 extends and retracts the rod of the actuator 47, allowing the lower body support (thigh support 21 and lower leg support 22) to be tilted up and down relative to the support base 3, as shown in Figure 5. However, the lower body tilting mechanism 7 is not limited to the above configuration; it only needs to be able to tilt the lower body support (thigh support 21 and lower leg support 22) up and down relative to the support base 3.

[0039] Here, below the actuator 47 of the lower body tilting mechanism 7, a protective body 48 is provided to protect the actuator 47 from below (to prevent downward forces from directly acting on the actuator 47 above). The base end of the protective body 48 is attached to the lower front part of the support body 46, branching and bending to the left and right toward the front and upward, and the bifurcated tip is attached to the central rear part of the support frame 39 with a gap between them on the left and right. In this way, the protective body 48 is bifurcated so as not to hinder the vertical rotation of the actuator 47, and is installed between the support body 46, which is directly connected to the base end of the actuator 47, and the support frame 39, which is indirectly connected to the tip of the actuator 47 via support arms 40, 41 and movable body 42. As a result, when assembling, disassembling, or transporting the modular bed 1, even if the support base 3 (lower body tilting mechanism 7) is placed on the floor, the actuator 47 is not directly subjected to force from the floor, thus preventing damage or malfunction of the actuator 47. Moreover, even if a tensile force acts between the support body 46 connected to the base end of the actuator 47 and the support frame 39 connected to the tip end of the actuator 47 when the actuator 47 is moving (extending or retracting), the protective body 48 can absorb the tensile force, preventing deformation or damage to the support body 46 or support frame 39, and preventing malfunction of the moving actuator 47.

[0040] The protective bodies 28, 38, and 48 described above are designed to protect the upper actuators 27, 37, and 47 from below, but are not limited to this; any protective body that can protect upper non-movable or movable components from below is acceptable.

[0041] In the above-described modular bed 1, during manufacturing in the factory, it is manufactured in separate parts, for example, a base unit with a lifting mechanism 5 attached to a base 2, a support unit with an upper body tilting mechanism 6 and a lower body tilting mechanism 7 attached to a support base 3, support bases 4 (buttock support base 19, upper body support base 20, thigh support base 21, and lower leg support base 22), a headboard 17, and a footboard 16. These are assembled and used when installed after shipment, and disassembled and then reassembled for use when moving or otherwise.

[0042] Furthermore, the above-mentioned modular bed 1 employs a fitting structure that allows for easy assembly into assembly parts (fitting parts) where different components are assembled to form a bed, such as attaching a support base unit to a base unit, or attaching a thigh support 21 to the support base frames 14 and 15 of the support base unit.

[0043] For example, as shown in Figures 6(a) and (b), in the part where the thigh support 21 is assembled to the support frame 14, a support bracket 49 is attached to the upper part of the support frame 14, and the base end of a cylindrical shaft-shaped fitting projection 50 extending in the left-right direction is attached to the support bracket 49. An annular groove 51 is formed on the outer circumference of the tip of the fitting projection 50, and a locking body 52 made of an annular elastic material is detachably attached to the groove 51.

[0044] Furthermore, a support bracket 53 is attached to the left front end of the thigh support 21, and a fitting hole 54 is formed in the support bracket 53 that penetrates in the left-right direction and is rotatable on the outer circumference of the fitting projection 50.

[0045] Then, by inserting the fitting hole 54 into the fitting projection 50 against the elastic force of the locking body 52, the thigh support 21 can be assembled to the support frame 14. After assembly, the locking body 52 holds the fitting hole 54 in place so that it does not detach from the fitting projection 50.

[0046] In this way, the locking body 52 elastically deforms toward the radially inward direction of the fitting hole 54, allowing the fitting hole 54 to be inserted into the fitting projection 50. After insertion, it elastically deforms (restores) toward the radially outward direction of the fitting hole 54, covering the fitting hole 54 from the axially outward side of the fitting projection 50, thus preventing the fitting hole 54 from detaching from the fitting projection 50. The locking body 52 only needs to be able to elastically deform toward the radially inward direction of the fitting hole 54, and can be made of materials such as resin, metal, or rubber.

[0047] Furthermore, the locking body 52 only needs to be able to be attached to the fitting projection 50, and as shown in Figures 6(c) and (d), it may be configured such that a screw 57 formed in the locking body 56 is screwed into a screw hole 55 formed in the fitting projection 50.

[0048] Furthermore, the locking body 52 may be in the shape of an O-ring as shown in Figures 6(e) and (f), or it may be in the shape of a C-ring as shown in Figures 6(g) and (h) for the locking body 58. Also, as shown in Figures 6(i) and (j) for the locking body 59, a tip portion 59b may be formed on the outer circumference of the annular base end portion 59a that is attached to the fitting projection 50 of the locking body 59, and is larger than the fitting hole 54 and elastically deforms toward the radially inward direction of the fitting hole 54, at a distance from the outer circumference of the base end portion 59a. Furthermore, the locking body 56 may be disc-shaped as shown in Figures 6(k) and (l), or, as shown in Figures 6(m) and (n), the locking body 60 may have a disc-shaped base end portion 60a that is attached to the fitting projection 50 of the locking body 60, with a tip portion 60b that is larger than the fitting hole 54 and elastically deforms toward the radially inward direction of the fitting hole 54, formed at a distance from the base end portion 60a toward the outer circumference.

[0049] As described above, the above-mentioned modular bed 1 is configured to include protective bodies 28, 38, and 48 for protecting the upper components (actuators 27, 37, and 47) from below.

[0050] Therefore, in the assembly-type bed 1 with the above configuration, when assembling, disassembling, or transporting the assembly-type bed 1, the components (actuators 27, 37, 47) do not come into direct contact with the floor, but rather the protective bodies 28, 38, 48 come into contact with the floor first. As a result, the components (actuators 27, 37, 47) above the protective bodies 28, 38, 48 are not subjected to direct force from the floor, and damage to the components (actuators 27, 37, 47) can be prevented.

[0051] Furthermore, the above-mentioned modular bed 1 is configured such that the protective bodies 28, 38, and 48 protect the upper components (actuators 27, 37, and 47) that are movable from below.

[0052] Therefore, in the above-described assembly bed 1, damage or malfunction of the movable components (actuators 27, 37, 47) can be prevented.

[0053] Furthermore, the above-mentioned modular bed 1 has a configuration in which protective bodies 38, 48 are installed between a member directly or indirectly connected to the base end of a movable member (actuator 37, 47) (in this case, a support 36, 46 directly connected) and a member directly or indirectly connected to the tip of a movable member (actuator 37, 47) (in this case, a support frame 29, 39 indirectly connected).

[0054] Therefore, in the above-described assembly bed 1, even if a tensile force acts between the base end and the tip end when the movable members (actuators 37, 47) are moving, the protective bodies 38, 48 can absorb the tensile force, preventing deformation of the members (supports 36, 46 and support frames 29, 39) or damage, as well as failure of the movable members (actuators 37, 47).

[0055] Furthermore, the above-described modular bed 1 is configured such that a fitting hole 54 of the other member (thigh support base 21) can be inserted into a fitting projection 50 of one member (support frame 14), and locking bodies 52, 56, 58, 59, 60 are provided at the tip of the fitting projection 50. The locking bodies 52, 56, 58, 59, 60 elastically deform toward the radially inward direction of the fitting hole 54, allowing the fitting hole 54 to be inserted into the fitting projection 50. After insertion, they elastically deform (restore) toward the radially outward direction of the fitting hole 54, preventing the fitting hole 54 from detaching from the fitting projection 50.

[0056] Therefore, in the assembly-type bed 1 with the above configuration, different components can be assembled or disassembled without attaching or detaching other components to the components during assembly or disassembly of the assembly-type bed 1. This reduces the effort and time required for assembly and disassembly of the assembly-type bed 1 without losing or damaging other components, thereby improving work efficiency.

[0057] Furthermore, the above-mentioned modular bed 1 has a fitting projection 50 formed in an axial shape, and a fitting hole 54 formed so as to be rotatable on the outer circumference of the fitting projection 50.

[0058] Therefore, in the assembly bed 1 with the above configuration, the rotational force acting during rotation does not act on the locking bodies 52, 56, 58, 59, 60, and the locking bodies 52, 56, 58, 59, 60 can also be applied to the part where one member rotates relative to the other member.

[0059] Furthermore, the above-mentioned modular bed 1 has a configuration in which tip portions 59b and 60b are formed on the outer circumference of the base portions 59a and 60a that are attached to the fitting projections 50 of the locking bodies 59 and 60, and are larger than the fitting hole 54 and elastically deform toward the radially inward direction of the fitting hole 54, at intervals toward the outer circumference of the base portions 59a and 60a.

[0060] Therefore, with the above-described assembly bed 1, the force required when attaching and detaching one component from another can be reduced, further improving work efficiency. [Explanation of Symbols]

[0061] 1. Assembled bed 2. Base 3 Support stand 4 Rest 5. Lifting mechanism 6. Upper body tilting mechanism 7. Lower body tilting mechanism 8,9. Base frame 10,11 Casters 12,13 Connecting frames 14,15 Support frame 16 Footboard 17 Headboard 18 Connecting frame 19 Buttocks cradle 20 Upper body cradle 21 Thigh cradle 22 Lower leg cradle 23 Base-side movable frame 24 Support base-side movable frame 25, 26 Crossbar 27 Actuator 28 Protective body 29 Support frame 30,31 Support arm 32 Movable body 33, 34 Rollers 35 Support frame 36 Support 37 Actuator 38 Protective body 39 Support frame 40, 41 Support arm 42 Movable body 43, 44 Rollers 45 Support frame 46 Support structure 47 Actuator 48 Protective body 49 Support bracket 50 Fitting projection 51 Groove 52 Locking body 53 Support bracket 54 Fitting hole 55 Screw hole 56 Locking body 57 Screw 58 Locking body 59 Locking body 59a Proximal end 59b Distal end 60 Locking body 60a Base end 60b Tip

Claims

1. In a prefabricated bed that is formed by assembling different components, One member is provided with the other member so that it can rotate vertically. An assembly bed characterized by having a fitting hole formed horizontally and extending through the other member rotatably and detachably inserted into a fitting projection formed horizontally and extending axially on one member, and a locking body provided at the tip of the fitting projection, the locking body elastically deforming radially inward from the fitting hole so that the fitting hole can be inserted into the fitting projection, and after insertion it returns to its original position radially outward from the fitting hole so that the fitting hole does not detach from the fitting projection.

2. The assembly bed according to claim 1, characterized in that a screw hole is formed at the tip of the fitting projection, and a screw is formed on the disc-shaped locking body, and the locking body is screwed onto the tip of the fitting projection.

3. The assembly bed according to claim 1 or 2, characterized in that the locking body has tip portions formed at equal intervals toward the outer circumference of the base end portion which is attached to the fitting projection, and which are larger than the fitting hole and elastically deform toward the radially inward direction of the fitting hole.

Images