Ascending and descending device

Abstract

The present invention relates to an ascending and descending device and, more specifically, to an ascending and descending device comprising: a base frame having a loading space; a lifting body disposed on the base frame; and a lifting module disposed in the loading space, wherein a stable ascending and descending operation is achieved by the ascending and descending device.

Description

Elevator

[0001] The present invention relates to a lifting device, and more specifically, to a lifting device that achieves a stable lifting operation.

[0002] Medical beds can be raised and lowered to allow for variable patient posture and positioning. To prevent patient discomfort and pain during these processes, the bed must be raised and lowered stably.

[0003] The present invention has been devised to solve the above-mentioned problems, and an object of the present invention is to provide a lifting device that achieves a stable lifting and lowering operation.

[0004] According to one embodiment of the present invention, a lifting device includes: a base frame having a loading space; a lifting body disposed on the base frame; and a lifting module disposed within the loading space; wherein the lifting module includes a driving module that provides power, and a carrier module that is operated by the driving module, wherein the carrier module includes a carrier block, and the carrier block is positionally variable in a first direction by the operation of the driving module, and the lifting body includes a side body having a guide slope provided on a bottom surface, and the guide slope is positioned on the carrier block and is displaced in an up-and-down direction by the displacement of the carrier block.

[0005] In one embodiment, the carrier module includes a first carrier module and a second carrier module, and the side body includes a first side body positioned on the first carrier module and a second side body positioned on the second carrier module, and when the drive module is operated, a displacement amount of the first side body and a displacement amount of the second side body are the same.

[0006] In one embodiment, when the drive module is operated, the displacement amount of the carrier block of the first carrier module and the displacement amount of the carrier block of the second carrier module are equally distributed.

[0007] In one embodiment, the first carrier module and the second carrier module are arranged symmetrically on both sides of the drive module in the first direction with the drive module as the center, and the first side body and the second side body are arranged symmetrically with respect to each other in the first direction with the drive module as the center.

[0008] In one embodiment, the carrier module further includes a screw rod extending in the first direction and having a male thread on an outer surface and having one end connected to the drive module, and the carrier block includes a screw hole having a female thread, and the screw rod is screw-connected within the screw hole, and when the drive module is operated, the screw rod rotates and the carrier block is displaced along the first direction.

[0009] In one embodiment, the carrier module includes a first carrier module and a second carrier module, and the first carrier module and the second carrier module are arranged symmetrically on both sides of the drive module in the first direction with the drive module as the center, and the power provided by the drive module is equally distributed to the rotational amount of the screw rod of the first carrier module and the rotational amount of the screw rod of the second carrier module.

[0010] In one embodiment, the drive module includes a power unit providing rotational force, and a gear box connected to the power unit and connected to the carrier module, wherein the gear box distributes the rotational force of the power unit so that the rotational amount of the screw rod of the first carrier module is equal to the rotational amount of the screw rod of the second carrier module.

[0011] In one embodiment, the power device provides a first rotational force, the first rotational force having a rotational center axis extending in a direction orthogonal to the first direction, and the gear box converts the first rotational force provided by the power device into a second rotational force having a rotational center axis extending in the first direction and transmits the second rotational force to the first carrier module and the second carrier module.

[0012] In one embodiment, the carrier block includes a driving wheel provided at the bottom and supporting the carrier block.

[0013] In one embodiment, the base frame includes a guide rail extending in the first direction and guiding driving of the driving wheel.

[0014] In one embodiment, the carrier block includes a lifting wheel provided on the upper portion and supporting the guide slope.

[0015] In one embodiment, the base frame includes a rotatable support link, the carrier block includes a side arm, the support link includes a first link arm and a second link arm, the first link arm is positioned on a movement path of the side arm, and when the side arm pushes the first link arm, the support link rotates so that an end of the second link arm supports a lower portion of the lifting body.

[0016] In one embodiment, the support link includes a pivot shaft positioned between the first link arm and the second link arm, and the first link arm and the second link arm extend from each other at a predetermined angle.

[0017] In one embodiment, the support link further includes a support wheel provided at an end of the second link arm.

[0018] In one embodiment, the base frame includes a guide panel having a guide line formed thereon, and the support link further includes a guide portion, wherein the guide portion is positioned on the guide line and guided along the guide line.

[0019] The raising / lowering device according to an embodiment of the present invention can achieve a stable raising / lowering operation.

[0020] The lifting device according to an embodiment of the present invention can stably support the lifting body in a raised state.

[0021] Figure 1 is a drawing showing a lifting and lowering device according to one embodiment of the present invention.

[0022] Figure 2 is a drawing showing the disassembled structure of a lifting / lowering device according to one embodiment of the present invention.

[0023] FIG. 3 is a drawing showing a base frame included in a lifting / lowering device according to one embodiment of the present invention.

[0024] Figure 4 is an enlarged view of a portion of the base frame of Figure 3.

[0025] Figures 5 to 7 are drawings showing the lifting body included in the raising / lowering device according to one embodiment of the present invention from different directions.

[0026] FIG. 8 is a drawing showing a lifting module included in a lifting device according to one embodiment of the present invention.

[0027] Figure 9 is an exploded view showing the structure of a carrier module included in a lifting / lowering device according to one embodiment of the present invention.

[0028] Fig. 10 is a drawing showing the coupling structure of a lifting / lowering device according to one embodiment of the present invention.

[0029] Fig. 11 is a drawing showing a first operating state of a lifting / lowering device according to one embodiment of the present invention.

[0030] Fig. 12 is a cross-sectional drawing showing a first operating state of a lifting / lowering device according to one embodiment of the present invention.

[0031] FIG. 13 is an enlarged view showing a part of the first operating state of the raising / lowering device according to one embodiment of the present invention.

[0032] Fig. 14 is a drawing showing a second operating state of a lifting / lowering device according to one embodiment of the present invention.

[0033] FIG. 15 is an enlarged view showing a part of the second operating state of the raising / lowering device according to one embodiment of the present invention.

[0034] According to one embodiment of the present invention, a lifting device includes: a base frame having a loading space; a lifting body disposed on the base frame; and a lifting module disposed within the loading space; wherein the lifting module includes a driving module that provides power, and a carrier module that is operated by the driving module, wherein the carrier module includes a carrier block, and the carrier block is positionally variable in a first direction by the operation of the driving module, and the lifting body includes a side body having a guide slope provided on a bottom surface, and the guide slope is positioned on the carrier block and is displaced in an up-and-down direction by the displacement of the carrier block.

[0035] Hereinafter, with reference to the attached drawings, a preferred embodiment according to the present invention will be described.

[0036]

[0037] Hereinafter, with reference to the attached drawings, preferred embodiments according to the present invention will be described. In the following description, “first direction,” “second direction,” and “third direction” refer to the X-axis, Y-axis, and Z-axis directions of FIG. 1. In one example, “first direction,” “second direction,” and “third direction” may represent “left-right,” “front-back,” and “up-down” directions, respectively.

[0038] Fig. 1 is a drawing showing a lifting / lowering device (1) according to one embodiment of the present invention. Fig. 2 is a drawing showing an exploded structure of a lifting / lowering device (1) according to one embodiment of the present invention.

[0039] A lifting device (1) according to one embodiment of the present invention may include a base frame (100), a lifting body (200), and a lifting module (300).

[0040]

[0041] <Base Frame (100)>

[0042] FIG. 3 is a drawing showing a base frame (100) included in a lifting / lowering device (1) according to one embodiment of the present invention. FIG. 4 is an enlarged drawing showing a part of the base frame (100) of FIG. 3. CL of FIG. 3 is a central axis (CL) of the base frame (100), which may be an imaginary axis passing through the first and second direction centers of the base frame (100).

[0043] The base frame (100) may include a frame body (110), a mounting space (120), a guide rail (130), a support link (140), and a guide panel (150).

[0044] The frame body (110) may be composed of a combination of a plurality of bars and panels. The frame body (110) may be composed of a skeleton having a mounting space (120) on the inside. The frame body (110) may have an overall hexahedral shape having a predetermined width in the first direction, the second direction, and the third direction.

[0045] A mounting space (120) is formed within the frame body (110). The mounting space (120) may be formed as a hexahedral space having a predetermined width in the first direction, the second direction, and the third direction. The mounting space (120) may be open to at least one side in the third direction. A lifting module (300) may be mounted within the mounting space (120).

[0046] A guide rail (130) may be placed within the loading space (120). The guide rail (130) may extend in a first direction with a predetermined length. The guide rail (130) may guide the movement of a carrier block (340) included in a lifting module (300).

[0047] According to an embodiment, a plurality of guide rails (130) may be provided. The plurality of guide rails (130) may have a symmetrical arrangement in the first direction and the second direction with respect to the central axis (CL). Specifically, as illustrated in FIG. 3, the guide rail (130) may include a first guide rail (130-1) and a second guide rail (130-2). The first guide rail (130-1) and the second guide rail (130-2) may have a symmetrical arrangement in the first direction. In addition, as illustrated in FIG. 4, the guide rail (130) may include a front guide rail (130a) and a rear guide rail (130b). The front guide rail (130a) and the rear guide rail (130b) may have a symmetrical arrangement in the second direction.

[0048] The support link (140) may include a first link arm (141) and a second link arm (142). The first link arm (141) and the second link arm (142) may each be formed of a bar having a predetermined length. The first link arm (141) and the second link arm (142) may extend with a predetermined angle between them.

[0049] The support link (140) may be provided with a rotation axis (143). According to an embodiment, the rotation axis (143) may be provided at a position where the first link arm (141) and the second link arm (142) are connected to each other. The rotation axis (143) may extend along the second direction.

[0050] The support link (140) may be provided with a guide portion (144). According to an embodiment, the guide portion (144) may be provided on one side of the second link arm (142) in the second direction.

[0051] The support link (140) may be provided with a support wheel (145). According to an embodiment, the support wheel (145) may be provided at the end of the second link arm (142).

[0052] The support link (140) can be rotatably connected to the base frame (100). In an embodiment, the rotation axis (143) can be rotatably connected to the base frame (100). The support link (140) can rotate about the rotation axis (143).

[0053] The self-weight of the second link arm (142) and the support wheel (145) may be greater than the self-weight of the first link arm (141). Therefore, in a state where there is no external force, the second link arm (142) of the support link (140) can be placed on the frame body (110) and maintained in a lying state. In addition, the first link arm (141) of the support link (140) can be maintained in a rising (or sloping) state at a predetermined angle with respect to the horizontal plane.

[0054] A plurality of support links (140) are provided, and may have a symmetrical arrangement in the first direction and the second direction with respect to the central axis (CL). Specifically, as illustrated in FIG. 3, the support link (140) may include a first support link (140-1) and a second support link (140-2). The first support link (140-1) and the second support link (140-2) may have a symmetrical arrangement in the first direction. In addition, as illustrated in FIG. 4, the support link (140) may include a front support link (140a) and a rear support link (140b). The front support link (140a) and the rear support link (140b) may have a symmetrical arrangement in the second direction.

[0055] According to an embodiment, the base frame (100) may further include a guide panel (150). The guide panel (150) may be provided on the second-direction side surface of the base frame (100). The guide panel (150) may have a guide line (152). The guide line (152) may be a hole line penetrating the guide panel (150). The guide line (152) may have an arc shape having a central angle of a predetermined size and may extend. The guide part (144) provided in the support link (140) may be positioned within the guide line (152). The displacement of the guide part (144) may be guided along the guide line (152). When the support link (140) rotates around the rotation axis (143), the guide part (144) may be guided within the guide line (152).

[0056] A plurality of guide panels (150) are provided, and may have a symmetrical arrangement in the first direction and the second direction with respect to the central axis (CL). Specifically, the guide panel (150) may include a first guide panel (150-1) and a second guide panel (150-2). The first guide panel (150-1) and the second guide panel (150-2) may have a symmetrical arrangement in the first direction. In addition, the guide panel (150) may include a front guide panel (150a) and a rear guide panel (150b). The front guide panel (150a) and the rear guide panel (150b) may have a symmetrical arrangement in the second direction.

[0057]

[0058] Lifting Body (200)

[0059] Figures 5 to 7 are drawings showing the lifting body (200) included in the raising / lowering device (1) according to one embodiment of the present invention from different directions, respectively. CL in Figures 5 and 6 is the central axis (CL) of the lifting body (200), which may be an imaginary axis passing through the first and second direction centers of the base frame (100).

[0060] The lifting body (200) may include a top body (210) and a side body (220).

[0061] The top body (210) may be composed of a panel having a predetermined area. The top body (210) may have a panel shape having a predetermined width in the first direction and the second direction, and a predetermined thickness in the third direction. Predetermined members and structures may be positioned on the top body (210).

[0062] The side body (220) may be placed below the top body (210). The side body (220) may have a panel shape having a predetermined width in the first direction and the third direction and a predetermined thickness in the second direction.

[0063] The side body (220) may be provided with a guide slope (222) at the bottom. The guide slope (222) may be configured as a surface having a predetermined inclination angle. The guide slope (222) may be configured as a downwardly inclined surface in a direction away from the central axis (CL). In one example, an embodiment in which the bottom of the panel constituting the side body (220) is bent to provide the guide slope (222) is possible, but is not limited thereto.

[0064] A plurality of side bodies (220) are provided, and may have a symmetrical arrangement in the first direction and the second direction with respect to the central axis (CL). Specifically, the side body (220) may include a first side body (220-1) and a second side body (220-2). The first side body (220-1) and the second side body (220-2) may have a symmetrical arrangement in the first direction. In addition, the side body (220) may include a front side body (220a) and a rear side body (220b). The front side body (220a) and the rear side body (220b) may have a symmetrical arrangement in the second direction.

[0065] The guide slopes (222) provided on the first side body (220-1) and the second side body (220-2) may be symmetrical with respect to the central axis (CL) in the first direction. Specifically, as illustrated in FIG. 7, the guide slopes (222) provided on the first side body (220-1) and the second side body (220-2) may extend along virtual lines L1 and L2, respectively, and the L1 and L2 may be symmetrical with respect to the central axis (CL) in the first direction. The angle (θ1) between the central axis (CL) and the L1 and the angle (θ2) between the central axis (CL) and the L2 may be the same.

[0066] By having the above configuration, the side body (220) can have a first end (224) and a second end (226) in the first direction. The first end (224) is a portion of the side body (220), a portion having a relatively narrow width in the third direction, and a portion that is relatively close to the central axis (CL). The second end (226) is a portion of the side body (220), a portion having a relatively wide width in the third direction, and a portion that is relatively spaced apart from the central axis (CL).

[0067] The guide slopes (222) provided on the front side body (220a) and the rear side body (220b) may be symmetrical with respect to the central axis (CL) in the second direction. Specifically, the guide slopes (222) provided on the front side body (220a) and the rear side body (220b) constituting the first side body (220-1) may extend along the virtual line L1 of FIG. 7. The guide slopes (222) provided on the front side body (220a) and the rear side body (220b) constituting the second side body (220-2) may extend along the virtual line L2 of FIG. 7.

[0068]

[0069] Lifting Module (300)

[0070] Fig. 8 is a drawing showing a lifting module (300) included in a lifting device (1) according to one embodiment of the present invention. Fig. 9 is an exploded view showing the structure of a carrier module (304) included in a lifting device (1) according to one embodiment of the present invention. CL in Fig. 8 is a central axis (CL) of the lifting module (300), which may be an imaginary axis passing through the first direction center of the lifting module (300).

[0071] The lifting module (300) may include a drive module (302) and a carrier module (304).

[0072] The drive module (302) may be a device that receives power from an external source and provides rotational force to the carrier module (304). Specifically, the drive module (302) may generate a first rotational force (R1) that rotates around an axis (CLA) extending in the second direction.

[0073] According to an embodiment, the drive module (302) may include a power unit (310) and a gear box (320).

[0074] The power unit (310) is a device capable of generating power. For example, the power unit (310) may be a servo motor. In an embodiment, the power unit (310) may provide a first rotational force (R1) that rotates around an axis extending in a second direction.

[0075] The gear box (320) may be a component having a gear device built into it. The gear box (320) may be a device that converts and distributes the direction of the rotational force of the power device (310). The gear box (320) may convert the first rotational force (R1) provided from the power device (310) into a second rotational force (R2). Here, the second rotational force (R2) may be a rotational force centered on an axis (CLB) extending in the first direction. The second rotational force may be provided to both sides of the gear box (320) in the first direction.

[0076] According to an embodiment, the gear box (320) can equally distribute the first rotational force (R1). That is, when a first rotational force (R1) of a predetermined size is provided, the second-first rotational force (R2-1), which is a rotational force provided to one side in the first direction, and the second-second rotational force (R2-2), which is a rotational force provided to the other side in the first direction, can be equal.

[0077] The specific configuration of the above gear box (320) is not limited. For example, the gear box (320) may include a bevel gear connected to the power unit (310).

[0078] The carrier module (304) may include a first carrier module (304-1) and a second carrier module (304-2). The first carrier module (304-1) and the second carrier module (304-2) may have a symmetrical arrangement on both sides in the first direction with respect to the central axis (CL). In other words, the first carrier module (304-1) and the second carrier module (304-2) may have a symmetrical arrangement on both sides in the first direction with respect to the drive module (302) as the center. The first carrier module (304-1) and the second carrier module (304-2) may have the same configuration. Therefore, in the following description, the description of the first carrier module (304-1) and the second carrier module (304-2) will be uniformly described as the carrier module (304).

[0079] The carrier module (304) may include a screw rod (330) and a carrier block (340).

[0080] The screw rod (330) may be a rod extending in a first direction with a predetermined length. One end of the screw rod (330) may be connected to the driving module (302). A male thread may be formed on the outer surface of the screw rod (330). One end of the screw rod (330) may be connected to the gear box (320). When the second rotational force is provided through the gear box (320), the screw rod (330) may rotate about a rotational axis (CLB) extending in a direction parallel to the first direction.

[0081] The carrier block (340) may include a block body (341), a driving wheel (342), a lifting wheel (343), a side arm (344), and a screw connection hole (345).

[0082] The block body (341) can constitute the body of the carrier block (340).

[0083] The driving wheel (342) may be positioned at the bottom of the block body (341). The driving wheel (342) may be configured as a freely rotatable wheel. When an external force is applied to the block body (341), the block body (341) may be driven by the driving wheel (342) while being supported on the driving wheel (342).

[0084] The lifting wheel (343) may be located on the upper part of the block body (341). The lifting wheel (343) may be configured as a freely rotatable wheel.

[0085] The side arm (344) is provided on the side of the block body (341) and may be a beam extending in the second direction.

[0086] The screw connection hole (345) is formed in the block body (341) and may be a hole penetrating in the first direction. A female screw portion may be formed on the inner circumferential surface of the screw connection hole (345).

[0087] The carrier block (340) can be connected to the screw rod (330). Specifically, the screw rod (330) is inserted into the screw connection hole (345), and the male thread portion of the screw rod (330) and the female thread portion within the screw connection hole (345) can be screw-connected to each other. When the screw rod (330) rotates around the rotation axis, the carrier block (340) can be displaced in the first direction.

[0088] In an embodiment, when a first rotational force of a predetermined magnitude is provided, the rotational force provided to one side of the first direction (the second-first rotational force (R2-1)) and the rotational force provided to the other side of the first direction (the second-second rotational force (R2-2)) may be the same. In an embodiment, with respect to the operation of the drive module (302), the rotational amount of the screw rod (330) of the first carrier module (304-1) and the rotational amount of the screw rod (330) of the second carrier module (304-2) may be the same. In addition, the first direction displacement amount (C1) of the carrier block (340) of the first carrier module (304-1) and the first direction displacement amount (C2) of the carrier block (340) of the second carrier module (304-2) may be the same and may be in opposite directions. That is, the displacement of the first carrier block (340) and the displacement of the second carrier block (340) due to the operation of the drive module (302) can be symmetrical to each other in the first direction with respect to the central axis (CL).

[0089]

[0090] <Binding Relationship>

[0091] Figure 10 is a drawing showing the coupling structure of a lifting / lowering device (1) according to one embodiment of the present invention.

[0092] The lifting module (300) can be placed within the loading space (120) of the base frame (100).

[0093] The guide rail (130) of the base frame (100) and the driving wheel (342) of the lifting module (300) may be positioned on the same straight line extending in the third direction. The driving of the driving wheel (342) may be guided by the guide rail (130). Accordingly, the carrier block (340) may be driven in the first direction along the guide rail (130).

[0094] The lifting body (200) can be positioned on the lifting module (300).

[0095] The lifting body (200) may be supported by the lifting wheel (343) of the lifting module (300). Specifically, the lifting wheel (343) and the side body (220) of the lifting body (200) may be positioned on the same straight line extending in the third direction. Specifically, the bottom of the side body (220) may be positioned on the lifting wheel (343) of the lifting module (300). Accordingly, the guide slope (222) provided on the bottom of the side body (220) may be positioned on the lifting wheel (343). In one example, depending on the position of the carrier block (340), the lifting wheel (343) may be displaced from the position where the side body (220) is positioned and may be positioned below the top body (210).

[0096] The central axis (CL) of the base frame (100), the central axis (CL) of the lifting body (200), and the central axis (CL) of the lifting module (300) may be positioned on the same line.

[0097] Meanwhile, although not shown, a sensor capable of detecting and controlling the operation of the lifting module (300) may be provided within the base frame (100).

[0098] For example, a predetermined sensor (not shown) positioned on the movement path of the carrier block (340) may be provided at one position within the base frame (100). The sensor (not shown) may generate a predetermined electric signal when the carrier block (340) is positioned at one position or passes through one position. The electric signal may control the operation of the drive module (302). Accordingly, when the carrier block (340) reaches one position, operation control such as stopping the operation of the drive module (302) or reducing the operation speed may be performed. To this end, a predetermined control unit (not shown) that receives the electric signal and generates an operation signal may be provided.

[0099]

[0100] <Operation of the lifting device (1)>

[0101] FIG. 11 is a drawing showing a first operating state of an elevating device (1) according to an embodiment of the present invention. FIG. 12 is a drawing showing a cross-section of a first operating state of an elevating device (1) according to an embodiment of the present invention. FIG. 13 is a drawing showing an enlarged portion of a first operating state of an elevating device (1) according to an embodiment of the present invention. FIG. 14 is a drawing showing a second operating state of an elevating device (1) according to an embodiment of the present invention. FIG. 15 is a drawing showing an enlarged portion of a second operating state of an elevating device (1) according to an embodiment of the present invention.

[0102] Below, the operation of the raising / lowering device (1) is described with reference to FIGS. 11 to 15.

[0103] The lifting device (1) according to the embodiment can have a first operating state and a second operating state. The first operating state is a state in which the lifting body (200) is lowered. The second operating state is a state in which the lifting body (200) is raised. The lifting body (200) can be positionally variable in a third direction between the first operating state and the second operating state.

[0104] The first operating state is described as follows.

[0105] In the first operating state, the carrier block (340) is positioned close to the drive module (302) in the first direction. That is, the distance between the carrier block (340) and the drive module (302) is relatively small. Accordingly, the lifting wheel (343) may be positioned at the first end (224) of the side body (220), or close to the first end (224) of the side body (220), or at a position away from the side body (220).

[0106] Accordingly, the lifting body (200) is positioned in a lowered position in the third direction.

[0107] In the second operating state, the carrier block (340) is positioned apart from the drive module (302) in the first direction. That is, the distance between the carrier block (340) and the drive module (302) is relatively large. Accordingly, the lifting wheel (343) may be positioned at the second end (226) of the side body (220) or may be positioned close to the second end (226) of the side body (220).

[0108] Therefore, the lifting body (200) is positioned in an upward position in the third direction.

[0109] As described above, the third direction position movement of the lifting body (200) between the first operating state and the second operating state can be achieved by the operation of the lifting module (300).

[0110] That is, as the carrier block (340) included in the lifting module (300) moves in position in the first direction, the position at which the lifting wheel (343) included in the carrier block (340) supports the guide slope (222) can be changed in the third direction. Accordingly, the lifting body (200) supported on the lifting wheel (343) can move in position in the third direction.

[0111] Specifically, when the carrier block (340) moves from the first end (224) of the side body (220) toward the second end (226), the lifting body (200) can rise in the third direction. That is, it can operate from the first operating state to the second operating state.

[0112] Conversely, when the carrier block (340) moves from the second end (226) of the side body (220) toward the first end (224), the lifting body (200) can be lowered in the third direction. That is, it can be operated from the second operating state to the first operating state.

[0113] According to an embodiment, the lifting module (300) includes a driving module (302) positioned centrally in a first direction, and a first carrier module (304-1) and a second carrier module (304-2) positioned symmetrically on both sides in the first direction with respect to the driving module (302). The first carrier module (304-1) and the second carrier module (304-2) each include a carrier block (340) connected to a screw rod (330). The driving module (302) can provide the same rotational force to the screw rods (330) included in the first carrier module (304-1) and the second carrier module (304-2).

[0114] Accordingly, the rotational amounts of the screw rods (330) included in the first carrier module (304-1) and the second carrier module (304-2) are the same, and the displacement amounts of the carrier block (340) of the first carrier module (304-1) and the displacement amounts of the carrier block (340) of the second carrier module (304-2) can be the same. The first carrier block (340) and the second carrier block (340) can operate symmetrically in the first direction with respect to the driving module (302). That is, when the driving module (302) operates by a certain amount, the positional displacement amounts of the first carrier block (340) and the second carrier block (340) are the same, and the positional movement directions can be moved symmetrically with respect to the driving module (302). Accordingly, the third direction displacement amounts of the first side body (220-1) positioned on the lifting wheel (343) of the first carrier block (340) and the second side body (220-2) positioned on the lifting wheel (343) of the second carrier block (340) may be equal to each other. Therefore, during the operation process between the first operation state and the second operation state as described above, the lifting body (200) can stably move in position in the third direction. That is, the lifting body (200) can be stably raised and lowered.

[0115]

[0116] <Operation of Support Link (140)>

[0117] Hereinafter, the operation of the support link (140) will be described again with reference to FIGS. 11 to 15. In the following description, the first operating state and the second operating state are the same as defined in the above description.

[0118] According to an embodiment, the base frame (100) includes a support link (140), and in the second operating state, the lifting body (200) can be stably supported by the support link (140).

[0119] The specific operation of the support link (140) is described as follows.

[0120] As illustrated in FIGS. 11 to 13, in the first operating state, the side arm (344) provided on the carrier block (340) is spaced apart from the support link (140) and does not apply an external force to the support link (140). Accordingly, the second link arm (142) of the support link (140) remains lying on the frame body (110). In addition, the first link arm (141) of the support link (140) remains rising (or sloping) at a predetermined angle with respect to the horizontal plane.

[0121] In the process of switching from the first operating state to the second operating state, the carrier block (340) moves in the first direction as indicated by arrow L in Fig. 15. Specifically, it moves from a position close to the driving module (302) to a position spaced apart from it. At this time, the side arm (344) provided in the carrier block (340) also moves simultaneously. In this process, the lifting body (200) also rises as indicated by arrow V.

[0122] The first link arm (141) in the erected state is located on the movement path of the side arm (344). When the side arm (344) pushes the first link arm (141) in the erected state in the first direction, the support link (140) rotates around the rotation axis (143) as indicated by arrow R. Accordingly, the first link arm (141) is switched to a lying state by the side arm (344), and the second link arm (142) is switched to a rising (or sloping) state.

[0123] As the second link arm (142) is erected, the end of the second link arm (142) can come into contact with the bottom surface of the lifting body (200). According to an embodiment, the support wheel (145) provided at the end of the second link arm (142) can support the bottom surface of the lifting body (200).

[0124] When switching from the second operating state to the first operating state, the pushing of the support link (140) by the side arm (344) is released. Accordingly, the support link (140) is again switched to a state where the second link arm (142) lies on the frame body (110) and the first link arm (141) is switched to a state where it rises (or slopes) at a predetermined angle with respect to the horizontal plane.

[0125] As described above, the support link (140) operates in conjunction with the operation of the lifting module (300) and can support the lower surface of the lifting body (200) in the second operating state. Therefore, in the second operating state, the lifting body (200) can stably maintain its position and posture in an elevated state.

[0126] When switching from the second operating state to the first operating state, the interference of the side arm (344) with the support link (140) is eliminated. Accordingly, the first link arm (141) is restored to an upright state, and the second link arm (142) is restored to a lying state.

[0127]

[0128] <Effect by Example>

[0129] According to the embodiment, the lifting body (200) can be raised and lowered stably. In addition, when the lifting body (200) is raised and lowered, it can be supported by the support link (140) and maintain a stable position.

[0130] Therefore, stable lifting and lowering and support can be achieved for a predetermined support positioned on the lifting body (200).

[0131] For example, when the elevating device (1) according to the embodiment is used for a hospital heater, bedding, etc., the change in posture and body support of a patient, etc. placed on the elevating device (1) can be achieved stably.

[0132]

[0133] Although the preferred embodiments have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and various modifications may be made by a person skilled in the art to which the invention pertains without departing from the gist of the invention as claimed in the claims. Furthermore, such modifications should not be understood individually from the technical idea or prospect of the present invention.

Claims

1. Base frame having a loading space; A lifting body placed on the above base frame; and A lifting module disposed within the above-mentioned loading space; The above lifting module, A drive module that provides power, and Includes a carrier module operated by the above driving module, The above carrier module includes a carrier block, The above carrier block is positionally variable along the first direction by the operation of the driving module, The above lifting body includes a side body having a guide slope on the bottom surface, The above guide slope is a lifting and lowering device positioned on the carrier block and displaced in the up-and-down direction by the displacement of the carrier block.

2. In paragraph 1, The above carrier module includes a first carrier module and a second carrier module, The above side body, A first side body positioned on the first carrier module, and a second side body positioned on the second carrier module, A lifting and lowering device in which the displacement amount of the first side body and the displacement amount of the second side body are the same when the above driving module is operated.

3. In paragraph 2, When the above drive module is in operation, A lifting and lowering device in which the displacement amount of the carrier block of the first carrier module and the displacement amount of the carrier block of the second carrier module are equally distributed.

4. In paragraph 2, The above first carrier module and second carrier module, With the above driving module as the center, they are arranged symmetrically on both sides of the driving module in the first direction, The above first side body and the above second side body, A lifting and lowering device symmetrical to each other in the first direction with the above driving module as the center.

5. In paragraph 1, The above carrier module, Further comprising a screw rod extending in the first direction and having a screw thread on the outer surface, one end of which is connected to the driving module; The above carrier block, Includes a screw hole having a female screw portion, The screw rod is screw-connected within the screw hole, A lifting and lowering device in which, when the above driving module operates, the screw rod rotates and the carrier block is displaced along the first direction.

6. In paragraph 5, The above carrier module includes a first carrier module and a second carrier module, The above first carrier module and second carrier module, With the above driving module as the center, they are arranged symmetrically on both sides of the driving module in the first direction, The power provided by the above drive module is: The rotational amount of the screw rod of the first carrier module, A lifting and lowering device in which the rotational amount of the screw rod of the second carrier module is equally distributed.

7. In paragraph 6, The above driving module, A power unit providing rotational power, and A gear box connected to the above power unit and connected to the carrier module, The above gear box, The rotational amount of the screw rod of the first carrier module, A lifting device that distributes the rotational power of the power device so that the rotational amount of the screw rod of the second carrier module is the same.

8. In paragraph 7, The above power device provides a first rotational force, wherein the first rotational force is: It has a rotational center axis extending in a direction orthogonal to the first direction, The gear box is an elevator device that converts the first rotational force provided from the power device into a second rotational force having a rotational center axis extending in the first direction and transmits the converted second rotational force to the first carrier module and the second carrier module.

9. In paragraph 1, The above carrier block, A lifting device having a driving wheel provided at the bottom and supporting the carrier block.

10. In paragraph 9, The above base frame is, A lifting / lowering device including a guide rail extending in the first direction and guiding driving of the driving wheel.

11. In paragraph 1, The above carrier block, A lifting device having a lifting wheel provided on the upper part and supporting the guide slope.

12. In paragraph 1, The above base frame includes a rotatable support link, The above carrier block includes a side arm, The above support link comprises a first link arm and a second link arm, The first link arm is located on the movement path of the side arm, and when the side arm pushes the first link arm, An elevating device in which the support link rotates so that the end of the second link arm supports the lower portion of the lifting body.

13. In paragraph 12, The above support link is, Including a rotational axis positioned between the first link arm and the second link arm, A lifting device in which the first link arm and the second link arm extend from each other at a predetermined angle.

14. In paragraph 12, The above support link is, A lifting device further comprising a support wheel provided at an end of the second link arm.

15. In paragraph 12, The above base frame is, Includes a guide panel with guide lines formed thereon; The above support link further includes a guide section, The above guide part is positioned on the above guide line and is a lifting and lowering device guided along the above guide line.

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