Lifting auxiliary device and conveyance system

Abstract

To facilitate lifting of narrow stairs.SOLUTION: A lifting auxiliary device 10 includes a body 11, a first support part 12, and a belt body 14. In the body 11, its longitudinal direction is a Z-axis direction. In the belt body 14, one end is connected to the body 11 or the first support part 12, and the other end is inclinable in a Y-axis negative direction based on the body 11. The first support part 12 is provided so as to project in an X-axis positive direction and negative direction from the body 11. The first support part 12 has a pair of first engagement parts which are engaged so as to be attachable / detachable to / from a conveyance machine for conveying a conveyance object. The length in an X-axis direction of the first support part 12 is equal to or less than the length in the X-axis direction of the conveyance machine.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a lift assist device and a transport system. [Background technology]

[0002] To easily transport gas cylinders or wheelchairs up stairs, a transport machine equipped with a lifting assistance unit including a belt body inclined to follow the corner edges of each step is known. For example, Patent Document 1 discloses an article transport machine equipped with a base body equipped with casters, an article placement platform equipped with casters, and an electrically-driven moving belt body whose lower part is attached to the rear lower part of the base body and whose upper part is inclined backward. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3224314 Summary of the Invention [Problem to be solved by the invention]

[0004] However, such an article conveyor has a problem in that the size of the article conveyor is always large due to the belt member that is not required under normal circumstances. To address this problem, the lifting and lowering auxiliary unit including the belt member has been made detachable, but if the width of the lifting and lowering auxiliary unit is large, the article conveyor cannot ascend and descend narrow stairs. Therefore, there is a need to slim down the lifting and lowering auxiliary unit.

[0005] In view of the above-mentioned problems, an object of the present disclosure is to provide a lifting assistance device and a transport system that make it easier to climb and descend narrow stairs. [Means for solving the problem]

[0006] A lift assist device according to an embodiment of the present disclosure includes a main body, a first support, and a belt body. The main body has a longitudinal direction in the Z-axis direction. One end of the belt body is connected to the main body or the first support, and the other end is tiltable in the Y-axis negative direction with respect to the main body. The first support is provided protruding from the main body in the X-axis positive and negative directions. The first support has a pair of first engagement parts that detachably engage with a conveyor for conveying an object to be conveyed. The length of the first support in the X-axis direction is equal to or less than the length of the conveyor in the X-axis direction. This makes it possible to prevent the width of the conveyor from increasing when the lift assist device is attached to the conveyor.

[0007] In the above-mentioned lift assist device, the distance in the X-axis direction between the pair of first engagement parts is equal to or less than the length of the conveyor in the X-axis direction, thereby preventing the width of the conveyor when the lift assist device is attached thereto from becoming large.

[0008] According to an aspect of the present disclosure, there is provided a transport system including the lift assist device and a transport machine that transports the transport object. This makes it possible to prevent the width of the transport system from increasing when the lift assist device is attached to the transport machine. Effect of the Invention

[0009] The present disclosure provides a lifting assistance device and a transport system that makes it easier to climb and descend narrow stairs. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view showing a configuration example of a transport system according to a first embodiment. [Diagram 2] FIG. 2 is a top view of the lift assist device according to the first embodiment. [Diagram 3] FIG. 2 is a front view of the lift assist device according to the first embodiment. [Figure 4] FIG. 2 is a side view of the lift assist device according to the first embodiment. [Diagram 5] FIG. 2 is a rear view of the wheelchair according to the first embodiment. [Figure 6] FIG. 1 is a side view of a wheelchair according to a first embodiment. [Figure 7] FIG. 1 is a top view of a wheelchair according to a first embodiment. [Figure 8] FIG. 2 is an enlarged view of a first connecting region according to the first embodiment. [Figure 9] FIG. 4 is an enlarged view of a second connecting region according to the first embodiment. [Figure 10] FIG. 11 is a perspective view showing a configuration example of a transport system according to a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In each drawing, the same or corresponding elements are denoted by the same reference numerals, and duplicated descriptions will be omitted as necessary for clarity of explanation.

[0012] <Embodiment 1> First, a first embodiment of the present disclosure will be described. Fig. 1 is a perspective view showing a configuration example of a transport system 1 according to the first embodiment. The transport system 1 includes a lift assist device 10 and a wheelchair 20. Fig. 1 shows a state in which the lift assist device 10 is detachably attached to the wheelchair 20.

[0013] Here, the X-axis, Y-axis, and Z-axis are mutually perpendicular axes. The X-axis and Y-axis directions are also referred to as the left-right direction and the front-back direction, respectively. In particular, the positive X-axis direction is also referred to as the right direction, and the negative X-axis direction is also referred to as the left direction. The negative Y-axis direction is the direction of progress when going up stairs, and is also referred to as the backward direction. The positive Y-axis direction is the opposite direction to the negative Y-axis direction, and is also referred to as the forward direction. The positive Z-axis direction is the direction away from the ground, and the negative Z-axis direction is the direction toward the ground.

[0014] The lift assist device 10 is a device that assists a wheelchair 20 in ascending and descending stairs. The lift assist device 10 mainly includes a main body 11, a first support part 12, a second support part 13, and a pair of belt bodies 14.

[0015] The main body 11 is the main body of the lift assist device 10. The longitudinal direction of the main body 11 is the Z-axis direction. For example, the main body 11 is a rod-shaped member extending approximately parallel to the Z-axis direction. The cross-sectional shape of the main body 11 is rectangular, but may be circular or polygonal.

[0016] The first support part 12 and the second support part 13 are connecting members for attaching the lift-up assistance device 10 to the wheelchair 20. The first support part 12 and the second support part 13 are configured to support the entire lift-up assistance device 10 when the lift-up assistance device 10 is connected to the wheelchair 20.

[0017] The first support part 12 is a rod-shaped metal member disposed at the end of the main body 11 on the negative side of the Z axis. The first support part 12 is provided so as to protrude to the right and left from the main body 11. The first support part 12 is connected to the wheelchair 20 at the right and left ends of the first support part 12. In this figure, a first connection region 100 on the right side of the first support part 12 is indicated by a thick line. The first connection region 100 is located inside the rear wheels 28 of the wheelchair 20.

[0018] The second support part 13 is a rod-shaped metal member disposed on the main body 11 on the Z-axis positive side of the first support part 12. The second support part 13 is provided to protrude to the right and left from the main body 11. The second support part 13 is connected to the wheelchair 20 at its right end and left end. In this figure, a second connection region 200 of 13 is indicated by a thick line. The second connection region 200 is located below the backrest 25 of the wheelchair 20 and on the inside of the wheelchair 20 in the width direction.

[0019] The pair of belt bodies 14 each have a conveyor belt that can rotate by pulleys attached to both ends. The pair of belt bodies 14 are provided parallel to each other, separated from each other in the left-right direction with respect to the main body 11. The lower end of each belt body 14 is indirectly connected to the first support part 12 via a fastener. The lower end of each belt body 14 may be directly connected to the first support part 12. Also, each belt body 14 may be fixed to the lower part of the main body 11 directly or indirectly via a fastener. Each belt body 14 is configured so that it can rotate within a predetermined range on the YZ plane around the lower end. That is, the upper end of each belt body 14 can be tilted backward with respect to the main body 11. When ascending or descending stairs, the belt body 14 is tilted so that the caregiver follows the corner edge of the stairs, and the conveyor belt is rotated. This allows the conveyor to ascend and descend with less force than when the belt body 14 is not tilted.

[0020] The lift assist device 10 may further include an electric motor for rotating the conveyor belt. The electric motor may be disposed under the main body 11 and may be operated by a driving power source supplied from a battery disposed adjacent thereto.

[0021] The wheelchair 20 is an example of a transport machine that transports a transport target. The wheelchair 20 transports a person as the transport target. The wheelchair 20 may be a manual wheelchair or an electric wheelchair. The wheelchair 20 is coupled to the front of the lift assist device 10. The wheelchair 20 mainly includes a seat 21, a backrest 25, a pair of front wheels 27, and a pair of rear wheels 28.

[0022] The seating portion 21 is a member on which a passenger sits. The backrest 25 is a member that supports the back of a passenger. The pair of front wheels 27 are rotatably mounted on the front side of the vehicle, and the pair of rear wheels 28 are rotatably mounted on the rear side of the vehicle.

[0023] The lift assist device 10 and the wheelchair 20 will be described in detail below. (Lifting assistance device 10) Fig. 2 is a front view of the lift-down assist device 10 according to the embodiment 1. Fig. 3 is a side view of the lift-down assist device 10 according to the embodiment 1. Fig. 4 is a top view of the lift-down assist device 10 according to the embodiment 1. Fig. 4 is a view of the lift-down assist device 10 as seen from above the major axis D of the belt body 14 shown in Fig. 3.

[0024] The lifting assistance device 10 includes a main body 11, a first support portion 12, a second support portion 13, and a pair of belt bodies 14, as well as a first cross-bridge portion 15, a second cross-bridge portion 16, a first fixed portion 17, a head protection portion 18, and a handle 19.

[0025] 2, the lift-assist device 10 is configured to be symmetrical with respect to a central axis C of the lift-assist device 10. The central axis C is the central axis of the main body 11, and is approximately parallel to the Z-axis direction. In the following, the term "a pair of members" indicates that the members are provided symmetrically with respect to the central axis C.

[0026] The first support part 12 has a first support part main body 120, a pair of first engagement parts 121, and a pair of auxiliary casters 122. The first support part main body 120 is a rod-shaped member. The pair of first engagement parts 121 are parts that detachably engage with the wheelchair 20. More specifically, the pair of first engagement parts 121 are both ends of the first support part 12 in the left-right direction.

[0027] The auxiliary caster 122 is a wheel that is disposed such that its pivot axis is aligned with the central axis of the first support body 120. The auxiliary caster 122 is located on the inside of the first engagement portion 121 in the first support portion 12. The auxiliary caster 122 abuts against the ground during horizontal movement and rotates in the pivot axis direction together with the movement of the lifting / lowering assistance device 10. This facilitates horizontal movement of the conveyance system 1. Furthermore, the auxiliary caster 122 abuts against the corner edge of the stairs when the lifting / lowering assistance device 10 is tilted and rotates in the pivot axis direction together with the movement of the lifting / lowering assistance device 10. This facilitates the conveyance system 1 to ascend and descend stairs.

[0028] The second support part 13 has a second support part main body 130 and a pair of second engagement parts 131. The second support part main body 130 is a rod-shaped member. The pair of second engagement parts 131 are parts that detachably engage with the wheelchair 20. More specifically, the pair of second engagement parts 131 are both ends of the second support part 13 in the left-right direction.

[0029] The first bridging portion 15 is a member that maintains constant the distance between the belt members 14 and the distance between the belt members 14 and the main body 11. The first bridging portion 15 has a first bridging portion main body 150 and a pair of fixing portions 151.

[0030] The first horizontal section body 150 is a rod-shaped member extending in the left-right direction, with both ends connected to the left and right belt bodies 14. The first horizontal section body 150 connects the left and right belt bodies 14, thereby maintaining a constant distance between the belt bodies 14. The first horizontal section body 150 may be movable in the direction of axis D while maintaining a constant distance between the belt bodies 14.

[0031] The pair of fixing parts 151 are rod-shaped members each having one end connected to the first horizontal frame main body 150 and the other end configured to be engaged with the second support part 13. The longitudinal direction of the pair of fixing parts 151 is the front-rear direction.

[0032] The second bridging portion 16 is a rod-shaped member extending in the left-right direction, with both ends connected to the left and right belt bodies 14. The second bridging portion 16 is located above the first bridging portion 15. The second bridging portion 16 connects the left and right belt bodies 14, thereby keeping the distance between the belt bodies 14 constant.

[0033] The first fixing part 17 is a member that fixes the main body 11 and the second support part 13. The head protection part 18 is a cushion that protects the head of the passenger. The handle 19 is a handle disposed above the main body 11. A caregiver can grasp the handle 19 to tilt the lifting assistance device 10 and move the transport system 1 up and down the stairs.

[0034] As shown in FIGS. 2 and 4, the distance between the left and right first engagement portions 121 is L 11 The distance between the left and right second engagement portions 131 is L12 In the first embodiment, the distance L 11 is equal to the length of the first support portion 12 in the left-right direction, and the distance L 12 is equal to the length of the second support portion 13 in the left-right direction. 12 is the distance L 11 and corresponds to the maximum length of the lift assist device 10 in the left-right direction. 12 is the distance L 11 In this case, the distance L 11 corresponds to the maximum width of the lift assist device 10.

[0035] In the lift assist device 10, at least one of the second support part 13, the first horizontal part 15, the second horizontal part 16, the first fixed part 17, the head protection part 18 and the handle 19 may be omitted.

[0036] (Wheelchair 20) Fig. 5 is a rear view of the wheelchair 20 according to the embodiment 1. Fig. 6 is a side view of the wheelchair 20 according to the embodiment 1. Fig. 7 is a top view of the wheelchair 20 according to the embodiment 1.

[0037] The wheelchair 20 includes a seat 21, a backrest 25, a pair of front wheels 27, and a pair of rear wheels 28, as well as a frame 22, a second receiving portion 23, a handle 24, armrests 26, and a footrest 29.

[0038] The frame 22 is a frame of the wheelchair 20. The frame 22 has a pair of upper frames 221, a pair of rear-wheel side frames 222, a pair of front-wheel side frames 223, and a pair of first receiving portions 224. The upper frame 221, the rear-wheel side frames 222, the front-wheel side frames 223, and the first receiving portions 224 may be formed as separate bodies or may be molded integrally.

[0039] The pair of upper frames 221 are frames that support the backrest 25 and the seating portion 21. A handle 24 is connected to the upper end of each upper frame 221. The handle 24 is provided concentrically and integrally with the upper frame 221. The caregiver can propel the wheelchair 20 by pushing the handle 24 with his or her hands.

[0040] The rear-wheel side frame 222 is a frame that supports the rear wheel 28. One end of the rear-wheel side frame 222 is connected to the upper frame 221, and the other end is connected to the rear wheel 28.

[0041] The front-wheel side frame 223 is a frame that supports the front wheel 27. One end of the front-wheel side frame 223 is connected to the upper frame 221, and the other end is connected to the front wheel 27.

[0042] The first receiving portion 224 is disposed inside the rear wheel side frame 222, and is a member that engages with the first engagement portion 121 of the lifting assistance device 10. The inside is the central axis side of the wheelchair 20 in the left-right direction. A groove for engaging with the first engagement portion 121 is formed in the first receiving portion 224. As an example, the first receiving portion 224 is a thin-walled member having a substantially U-shaped or C-shaped cross section.

[0043] The second receiving portion 23 is a member that is connected to the upper frame 221 and engages with the second engaging portion 131 of the lift assist device 10. A groove is formed in the second receiving portion 23 for engaging with the second engaging portion 131. As shown in Fig. 6, for example, the second receiving portion 23 is a thin-walled member having a substantially U-shaped or C-shaped cross section.

[0044] The armrest 26 is a member that supports the arms of the passenger. The footrest 29 is a member that supports the feet of the passenger.

[0045] Here, the maximum length of the wheelchair 20 in the left-right direction is the distance L 21 In the first embodiment, the distance L 21 is equal to the distance from the left end of the left rear wheel 28 to the right end of the right rear wheel 28, but is not limited to this. 21 is the distance L11 Equal to or distance L 11 Also, the distance L 21 is the distance L 12 Equal to or distance L 12 Greater than.

[0046] At least one of the armrest 26 and the footrest 29 may be omitted in the wheelchair 20. When the second support portion 13 is omitted in the lift-up assistance device 10, the second receiving portion 23 may be omitted in the wheelchair 20.

[0047] Fig. 8 is an enlarged view of the first connecting region 100 shown in Fig. 1. This figure shows the first connecting region 100 on the right side, but the first connecting region 100 on the left side is similar. As shown in the first connecting region 100 in this figure, the first support part 12 has a first engagement part 121 at one end. The caregiver engages the first engagement part 121 with the first receiving part 224 of the wheelchair 20 by hooking the first engagement part 121 into the groove of the first receiving part 224.

[0048] In the first embodiment, the cross-sectional shape of the first support portion 12 is a circle, but it may be a rectangle or a polygon. The first support portion 12 may be a hollow member or a solid member. The shape of the first receiving portion 224 may be designed based on the cross-sectional shape of the first support portion 12 so that they engage with each other.

[0049] In the first embodiment, the engagement is achieved by hooking one end of the rod-shaped first support portion 12 into the groove of the first receiving portion 224. However, the engagement means is not limited as long as the first support portion 12 and the first receiving portion 224 can engage with each other.

[0050] The first engaging portion 121 and the first receiving portion 224 may have through holes (not shown) and the first engaging portion 121 and the first receiving portion 224 may be fixed to each other by inserting a pin into the through hole, thereby improving stability.

[0051] 9 is an enlarged view of the second connecting region 200 shown in FIG. 1. This figure shows the second connecting region 200 on the right side, but the second connecting region 200 on the left side is similar. As shown in the second connecting region 200 in this figure, the second support part 13 has a second engagement part 131 at one end. The caregiver engages the second engagement part 131 with the second receiving part 23 of the wheelchair 20 by hooking the second engagement part 131 into the groove of the second receiving part 23.

[0052] The second engagement portion 131 and the second receiving portion 23 may have through holes, and the second engagement portion 131 and the second receiving portion 23 may be fixed to each other by inserting a pin into the through hole, thereby improving stability.

[0053] In the first embodiment, the cross-sectional shape of the second support portion 13 is a circle, but it may be a rectangle or a polygon. The second support portion 13 may be a hollow member or a solid member. The shape of the second receiving portion 23 may be designed based on the cross-sectional shape of the second support portion 13 so that they engage with each other.

[0054] In the first embodiment, the engagement is achieved by hooking one end of the rod-shaped second support portion 13 into the groove of the second receiving portion 23. However, the engagement means is not limited as long as the second support portion 13 and the second receiving portion 23 can engage with each other.

[0055] [effect] According to the first embodiment, the first support part 12 does not protrude beyond the wheelchair 20. In other words, the left-right length of the first support part 12 is equal to or smaller than the left-right length of the wheelchair 20. This prevents the width of the transport system 1 from increasing when the lifting assistance device 10 is attached to the wheelchair 20. Therefore, the lifting assistance device 10 makes it easier for the wheelchair 20 to ascend and descend narrow stairs. Furthermore, the above structure makes it possible to reduce the weight of the lifting assistance device 10. This makes it possible to reduce the weight of the entire transport system 1. Therefore, the lifting assistance device 10 makes it even easier for the wheelchair 20 to ascend and descend stairs.

[0056] In order to achieve the above structure in which the first support portion 12 does not protrude beyond the wheelchair 20, the pair of first engagement portions 121 are spaced apart in the left-right direction by a distance equal to or less than the left-right length of the wheelchair 20.

[0057] Furthermore, according to the first embodiment, the lift-up assistance device 10 has a second engagement portion 131 in addition to the first engagement portion 121. The lift-up assistance device 10 and the wheelchair 20 engage with each other at multiple points, thereby improving the stability of the attachment. The number of engagement portions is not limited to two, and may be three or more. The greater the number of engagement portions, the greater the stability of the attachment.

[0058] Furthermore, according to the first embodiment, the second support part 13 does not protrude beyond the wheelchair 20. In other words, the left-right length of the second support part 13 is equal to or less than the left-right length of the wheelchair 20. This prevents the wheelchair 20 from becoming too wide when the lifting assistance device 10 is attached to it. Therefore, the lifting assistance device 10 makes it easier for the wheelchair 20 to ascend and descend narrow stairs. Furthermore, the above structure makes it possible to reduce the weight of the lifting assistance device 10. This makes it possible to reduce the weight of the entire transport system 1. Therefore, the lifting assistance device 10 makes it even easier for the wheelchair 20 to ascend and descend stairs.

[0059] In order to achieve the above structure in which the second support portion 13 does not protrude beyond the wheelchair 20, a pair of second engagement portions 131 are spaced apart in the left-right direction by a distance less than the left-right length of the wheelchair 20.

[0060] <Embodiment 2> In the first embodiment, the lift-up assistance device 10 can be attached to the wheelchair 20. However, in the second embodiment, the lift-up assistance device 10 can be attached to a cart. The lift-up assistance device 10 assists the cart in ascending and descending.

[0061] 10 is a perspective view showing a configuration example of a transport system 1a according to embodiment 2. The transport system 1a differs from the transport system 1 in that a dolly 30 is provided instead of the wheelchair 20.

[0062] The dolly 30 is a dolly for transporting luggage. The luggage may be non-hazardous goods such as materials, or may be hazardous goods such as cylinders. The dolly 30 includes a frame 31, a placement portion 32, a pair of first receiving portions 324, a pair of second receiving portions 33, a pair of front wheels 37, and a pair of rear wheels 38.

[0063] The frame 31 is a frame of the dolly 30. The frame 31 has a handle on the upper part. The frame 31 may have a biasing means such as a spring on the lower part, and the dolly 30 may be folded by tilting the upper part forward. The placement section 32 is a top plate on which luggage is placed.

[0064] The pair of first receiving portions 324 are flat members having one end connected to the lower portion of the frame 31 and the other end engaging with the first engaging portion 121 of the lift assist device 10. The first receiving portions 324 are disposed between the pair of rear wheels 38 in the left-right direction. Similar to the first receiving portions 224, the first receiving portions 324 are formed with grooves for engaging with the first engaging portions 121.

[0065] The first engaging portion 121 and the first receiving portion 324 are engaged with each other by hooking one end of the rod-shaped first supporting portion 12 into the groove of the first receiving portion 324. However, the engaging means is not limited as long as the first supporting portion 12 and the first receiving portion 324 are capable of engaging with each other.

[0066] The second receiving portion 33 is a member having one end connected to the frame 31 above the connection portion with the first receiving portion 324, and the other end engaging with the second engaging portion 131 of the lift assist device 10. The second receiving portion 33 has a groove for engaging with the second engaging portion 131, similar to the second receiving portion 23.

[0067] The second engaging portion 131 and the second receiving portion 33 are engaged with each other by hooking one end of the rod-shaped second supporting portion 13 into the groove of the second receiving portion 33. However, the engaging means is not limited as long as the second supporting portion 13 and the second receiving portion 33 are capable of engaging with each other.

[0068] Here, the maximum length of the dolly 30 in the left-right direction is the distance L 31In the second embodiment, the distance L 31 is equal to the distance from the left end of the left rear wheel 38 to the right end of the right rear wheel 38, but is not limited to this. 31 is the distance L 11 Equal to or distance L 11 Also, the distance L 31 is the distance L 12 Equal to or distance L 12 Greater than.

[0069] [effect] In the second embodiment as well, the first support portion 12 does not protrude beyond the carriage 30. In other words, the left-right length of the first support portion 12 is equal to or less than the left-right length of the carriage 30. This provides the same effect as in the first embodiment. To achieve the above structure, in the second embodiment as well, a pair of first engagement portions 121 are spaced apart in the left-right direction at a distance equal to or less than the left-right length of the carriage 30.

[0070] Moreover, the second support portion 13 does not protrude beyond the dolly 30. In other words, the left-right length of the second support portion 13 is equal to or less than the left-right length of the dolly 30. This provides the same effect as in embodiment 1. And to achieve the above structure, also in embodiment 2, a pair of second engagement portions 131 are spaced apart in the left-right direction at a distance equal to or less than the left-right length of the dolly 30.

[0071] The lift-assist device 10 may be capable of mounting a manual wheelchair, an electric wheelchair, and a cart, thereby increasing the versatility of the lift-assist device 10.

[0072] Although the present disclosure has been described above with reference to the embodiments, the present disclosure is not limited to the above. Various modifications that can be understood by a person skilled in the art can be made to the configuration and details of the present disclosure within the scope of the invention.

[0073] For example, in the lift assist device 10, the distance in the left-right direction between the pair of first engagement parts 121 that engage with the conveyor may be variable. This increases the versatility of the lift assist device 10.

[0074] As an example, the first support part 12 may be a composite body in which multiple pipes with different diameters are stacked on top of each other, and the length of the first support part 12 in the left-right direction may be expandable. With this configuration, the distance in the left-right direction between the pair of first engagement parts 121 can be easily changed. For example, by shortening the length of the first support part 12 in the left-right direction, the first engagement parts 121 can be attached to a child's wheelchair.

[0075] The above-mentioned modified example also applies to the second engagement portion 131. In this case, the first support portion 12 is replaced with the second support portion 13, and the first engagement portion 121 is replaced with the second engagement portion 131.

[0076] In the first and second embodiments, the pair of first engagement portions 121 are located at both ends of the first support portion 12, but they may be located on the inside of both ends on the first support portion 12. 11 may be smaller than the length of the first support part 12 in the left-right direction. In this case, the first engagement part 121 is a connector that can be attached to a predetermined position on the first support part 12, and may have a structure that can engage with any member of the conveyor. This makes it possible to attach the lift assist device 10 to a child's wheelchair.

[0077] The attachment position of the first engagement portion 121 on the first support portion 12 may be variable. By making it possible to select the attachment position depending on the size and structure of the conveyor, it becomes possible to attach the first support portion 12 to conveyors having various sizes and structures.

[0078] The above-mentioned modified example also applies to the second engagement portion 131. In this case, the first support portion 12 is replaced with the second support portion 13, and the first engagement portion 121 is replaced with the second engagement portion 131.

[0079] In the above-described first and second embodiments, the term "a pair of members" refers to the members being provided symmetrically with respect to the central axis C. However, the members do not need to be provided symmetrically as long as the stability of the attachment is ensured. [Explanation of symbols]

[0080] 1,1a Transport system 10 Lifting aid 11 Main unit 12 First support part 13 Second support part 14 Belt body 15 1st horizontal section 16 Second horizontal section 17 1st fixed part 18 Head protection part 19 Handle 20 Wheelchair 21 Seating area 22 Frames 23 Second receiving part 24 Handle 25 Backrest 26 Armrest 27 Front wheel 28 Rear wheel 29 Footrest 30 Carts 31 Frame 32 Placement section 33 Second receiving part 37 Front wheel 38 Rear wheel 100,100a 1st connection area 120 First support body 121 First engagement part 122 Auxiliary caster 130 Second support body 131 Second engagement portion 150 First cross section main body 151 Fixed part 200 Second connection area 200a 2nd connection area 221 Upper Frame 222 Rear wheel frame 223 Front wheel frame 224 First receiving part 324 First receiving part

Claims

1. A main body, a first support portion, and a belt body Equipped with The main body has a longitudinal direction in the Z-axis direction, one end of the belt body is connected to the main body or the first support portion, and the other end of the belt body is inclined in the negative Y-axis direction with respect to the main body; The first support portion is provided to protrude from the main body in the positive and negative directions of the X axis, the first support portion has a pair of first engagement portions that are detachably engaged with a conveying device for conveying an object to be conveyed; The length of the first support portion in the X-axis direction is equal to or less than the length of the conveyor in the X-axis direction. Lifting assistance device.

2. The lift assist device according to claim 1 , wherein a distance in the X-axis direction between the pair of first engagement portions is equal to or less than a length of the transport device in the X-axis direction.

3. The lift assist device according to claim 1 ; The conveyor that conveys the object to be conveyed; A transport system comprising:

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