Chassis device and rehabilitation training equipment comprising same

Abstract

The utility model provides a chassis device and rehabilitation training equipment comprising the chassis device, the chassis device comprises a bottom plate, a plurality of wheels, four bottom feet, two lifting connecting rods, a rotating shaft, two first rotating connecting pieces, a second rotating connecting piece and a driving assembly, the four bottom feet are connected with the bottom plate in an up-down sliding mode, and each lifting connecting rod is connected with the upper ends of the two bottom feet; a first strip-shaped hole is formed in one end, close to the rotating shaft, of each lifting connecting rod, and the first rotating connecting piece is slidably and pivotally connected with the first strip-shaped hole; a second strip-shaped hole is formed in the end, away from the rotating shaft, of each lifting connecting rod, and the second rotating connecting pieces are slidably and pivotally connected with the second strip-shaped holes; the chassis device further comprises two synchronous rods, and the two ends of each synchronous rod are connected with the first rotary connecting piece and the second rotary connecting piece in a pivoted mode. The driving assembly is connected with the rotating shaft. According to the implementation mode, the driving assembly drives the rotating shaft, the first rotating connecting piece and the second rotating connecting piece to rotate synchronously, so that the four bottom feet ascend and descend synchronously.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a chassis device and rehabilitation training equipment comprising the chassis device. Background Art

[0002] The chassis of the relevant equipment usually has both movable and fixed functions. For example, a universal wheel with a brake is installed under the chassis. The operator can open or close the brake by stepping on it, thereby fixing or releasing the universal wheel.

[0003] However, this method usually requires fixing each universal wheel, which increases the operation time and reduces the fixing efficiency. Utility Model Content

[0004] The content of this disclosure is intended to briefly introduce concepts that will be described in detail in the detailed description section below. The content of this disclosure is not intended to identify key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0005] The utility model provides a chassis device and rehabilitation training equipment including the chassis device to solve the technical problems mentioned in the above background technology part.

[0006] In a first aspect, the utility model provides a chassis device, comprising a base plate, a plurality of wheels arranged under the base plate, four base feet slidably connected to the base plate, two lifting links arranged in parallel, a rotating shaft arranged perpendicular to the lifting links, two first rotating connectors fixedly sleeved on the rotating shaft, two second rotating connectors rotatably connected to the base plate, and a drive assembly, wherein:

[0007] Each of the lifting links is connected to the upper ends of the two bases;

[0008] A first strip-shaped hole is provided at one end of each lifting link close to the rotating shaft, and two first rotating connecting members are slidably pivotally connected to the two first strip-shaped holes in a one-to-one correspondence;

[0009] A second strip-shaped hole is provided at one end of each lifting link away from the rotating shaft, and two second rotating connecting members are slidably pivotally connected to the two second strip-shaped holes in a one-to-one correspondence;

[0010] The chassis device further comprises two synchronization rods arranged in parallel with the lifting link, and the two ends of each synchronization rod are pivotally connected to the first rotation connecting member and the second rotation connecting member on the same side;

[0011] The driving assembly is connected to the rotating shaft and is used to drive the rotating shaft to drive the two first rotating connectors and the two second rotating connectors to rotate, thereby causing the two lifting links to drive the four base feet to move up and down.

[0012] Optionally, each of the first rotating connectors is provided with a pivot shaft, and the pivot shaft is slidably pivotally connected to the first bar-shaped hole.

[0013] Optionally, a pivot shaft is provided at one end of each second rotating connector, and the pivot shaft is slidably pivotally connected to the second bar-shaped hole; a base is fixed on the bottom plate, and the base is pivotally connected to the other end of the second rotating connector.

[0014] Optionally, the drive assembly includes a push rod, a meshing rack and a gear; the push rod is connected to the rack, and the gear is fixedly mounted on one end of the rotating shaft. In the working state, the push rod is extended and retracted, so that the rack drives the gear and the rotating shaft to rotate.

[0015] Optionally, a slider is connected to one side of the rack, a linear guide rail is provided on the base plate, and the slider is slidably connected to the linear guide rail.

[0016] Optionally, both ends of the linear guide rail are provided with stop blocks.

[0017] Optionally, two fixing seats are fixed on the bottom plate, and the two fixing seats can be slidably mounted on both ends of the rotating shaft.

[0018] Optionally, each of the base feet is connected to a fixed shaft; four copper sleeves are provided on the base plate; in the assembled state, the four fixed shafts are slidably connected to the four copper sleeves in a one-to-one correspondence.

[0019] Optionally, two proximity sensors are provided at both ends of a lifting link for detecting whether the lifting link is extended and retracted into place.

[0020] In a second aspect, the present invention provides a rehabilitation training device, comprising a chassis device as described in any embodiment of the first aspect.

[0021] The above-mentioned embodiments of the present invention have the following beneficial effects: through the chassis device of some embodiments of the present invention, the working efficiency of fixing the chassis device can be improved and the operation steps can be simplified.

[0022] Specifically, the drive assembly drives the rotating shaft, causing two first rotating connectors mounted on the shaft to rotate. These two first rotating connectors are also slidably pivotally connected to the first strip-shaped holes of the two lifting links. Each lifting link is also connected to two feet at each end, each of which is also slidably connected to the base plate in a vertical direction. Thus, within the constraints of the four sliding directions of the feet, when the first rotating connectors rotate, they can rotate and slide relative to the first strip-shaped holes, causing the two lifting links to move up and down.

[0023] Furthermore, the two first rotating connecting members can also cause the second rotating connecting rod on the same side to rotate and slide relative to the second bar hole through the synchronization rod, thereby synchronously driving the lifting connecting rod to rise and fall, and then enabling the four bases to simultaneously support or lower the wheels.

[0024] Compared with the method of locking the four wheels separately, the chassis device supports the four bases by rotating the rotating shaft, thereby improving the working efficiency of the fixed chassis device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a structural schematic diagram of an embodiment of a chassis device of the present utility model;

[0027] Figure 2 This is a structural schematic diagram of another embodiment of the chassis device of the present utility model;

[0028] Figure 3 This is a structural schematic diagram of another embodiment of the chassis device of the present utility model.

[0029] Description of reference numerals:

[0030] 1: Base plate; 2: Wheel; 31: Base foot; 32: Fixed shaft; 4: Lifting link; 41: First strip hole; 42: Second strip hole; 5: Rotating shaft; 61: First rotating connection; 62: Second rotating connection; 63: Synchronizing rod; 64: Base; 7: Fixed seat; 8: Driving assembly; 81: Push rod; 82: Rack; 83: Gear; 84: Slider; 85: Linear guide; 9: Stop block. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0034] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0035] See also Figure 1 and Figure 2 , Figure 1 This is a structural schematic diagram of an embodiment of a chassis device of the present utility model; Figure 2 FIG. 1 is a structural diagram of another embodiment of the chassis device of the present invention. Figure 1 and Figure 2 As shown, the chassis device includes a bottom plate 1 and a plurality of wheels 2 arranged under the bottom plate 1. The wheels 2 are used for moving the chassis device.

[0036] Four feet 31 are also provided on the four corners of the base plate 1. The feet 31 are connected to the base plate 1 so as to be slidable up and down.

[0037] Two parallel lifting links 4 are provided on the bottom plate 1, one on the left and the other on the right side of the bottom plate 1. Figure 1 Each lifting link 4 is connected to the upper ends of the two bases 31. Each lifting link 4 is provided with a first strip-shaped hole 41.

[0038] A rotating shaft 5 is provided perpendicular to the lifting link 4 and is pivotally connected to the base plate 1, allowing rotation about its own axis. Two fixing seats 7 can be fixed to the base plate 1 and slidably fit over the ends of the rotating shaft 5 to support and secure it.

[0039] Two first rotating connectors 61 are also fixedly mounted on the rotating shaft 5. Each first rotating connector 61 can be provided with a pivot shaft that is slidably pivotally connected to the first strip hole 41. Therefore, when the rotating shaft 5 rotates, it can drive the two first rotating connectors 61 to rotate. Under the limitation of the slidable connection between the base 31 and the base plate 1, the pivot shaft can rotate relative to the first strip hole 41 and slide along the first strip hole 41, thereby causing the lifting link 4 to drive the base 31 to rise and fall. When the base 31 rises, the wheel 2 contacts the ground, enabling the chassis device to move. When the base 31 descends, it will lift the wheel 2, thereby securing the chassis device.

[0040] Furthermore, the upper end of the foot 31 can be connected to a fixed shaft 32, and the fixed shaft 32 is slidably connected to the bottom plate 1. Furthermore, four copper sleeves can be provided on the bottom plate 1, and are slidably connected to the four fixed shafts 32 in a one-to-one correspondence.

[0041] The base device further includes a driving assembly 8, which is used to drive the rotation of the rotating shaft 5. As an example, the driving assembly 8 can be a motor directly connected to one end of the rotating shaft 5, thereby realizing the rotation of the rotating shaft 5 under the drive of the motor.

[0042] Continue reading Figure 1 and Figure 2 The driving assembly 8 may include a push rod 81, a rack 82 and a gear 83. The gear 83 is fixedly sleeved on the left end of the rotating shaft 5 ( Figure 1 The rack 82 is meshed with the gear 83. The push rod 81 is connected to the rack 82 and can push and pull the rack 82 to move back and forth, thereby driving the gear 83 to rotate. As an example, the push rod 81 can be an electromagnetic push rod or an electric push rod.

[0043] Furthermore, a slider 84 is connected to one side of the rack 82, and a linear guide 85 is fixed to the bottom plate. The slider 84 is slidably connected to the linear guide 85. In this way, the linear guide 85 can limit the movement direction of the rack 82, enhance the meshing strength between the rack 82 and the gear 83, and prevent the rack 82 and the gear 83 from disengaging.

[0044] Furthermore, two blocks 9 are provided at both ends of the linear guide rail 85, and the blocks 9 are used to limit the moving distance of the slider 84. Figure 1 Two proximity sensors can be set at both ends of the lifting link 4 (in the direction), and the two proximity sensors are set at different heights to respectively detect whether the lifting link 4 is in place. When the lifting link 4 rises to a high position, the lifting link 4 blocks one proximity sensor, indicating that the base 31 has risen to its place, the drive assembly 8 has stopped working, and the chassis device can move. When the lifting link 4 drops to a low position, the lifting link 4 blocks the other proximity sensor, indicating that the base 31 has dropped to its place, the drive assembly 8 has stopped working, and the chassis device is fixed. As an example, the above-mentioned proximity sensor can be a photoelectric switch or an ultrasonic proximity switch, etc., and those skilled in the art can choose according to actual conditions. In this way, the control of the lifting and lowering displacement of the base 31 can be achieved.

[0045] In this utility model, the rotation of the rotating shaft 5 causes the two first rotating connectors 61 to rotate and slide relative to the first strip-shaped holes 41, thereby causing the two lifting links 4 to reciprocate up and down. This in turn causes the four bases 31 to raise or lower the wheels 2, achieving both a fixed and a moving state for the chassis assembly. In other words, the two states can be switched simply by rotating the rotating shaft 5. This improves the efficiency of the chassis assembly's fixed state.

[0046] The driving assembly 8 that drives the rotating shaft can limit the reciprocating motion direction of the rack 82 through the combination of the linear slide rail 85 and the slider 84, thereby achieving close engagement between the rack 82 and the gear 83, avoiding separation of the rack 82 and the gear 83, and improving the reliability of the chassis device.

[0047] Since the rotating shaft 5 is connected to the lower ends of the two lifting links 4 ( Figure 1 Therefore, in the process of raising and lowering the base feet 31, it is possible that the two base feet 31 far away from the above-mentioned rotating shaft 5 cannot be raised and lowered synchronously with the two base feet 31 close to the rotating shaft 5.

[0048] In order to solve the above new technical problems, the chassis device also includes two second rotating connectors 62, two second bar holes 42, two synchronization rods 63 and two bases 64, so that the four bases 31 can be raised and lowered synchronously. Figure 3To explain, Figure 3 Schematic diagram of the structure of another embodiment of the chassis device of the present invention. Specifically, a second strip hole 42 is opened at the end of each lifting link 4 away from the rotating shaft 5. The upper end of the second rotating connector 62 ( Figure 3 The lower end of the second rotating connecting member 62 ( Figure 3 The two synchronization rods 63 are pivotally connected to a base 64 fixed to the base plate 1 (in the direction of the center). The two synchronization rods 63 are arranged parallel to the lifting links 4 and are respectively provided on the outside of the two lifting links 4. The two ends of each synchronization rod 63 are pivotally connected to the pivot axes of the first rotating connector 61 and the second rotating connector 62.

[0049] In this way, when the rotating shaft 5 drives the two first rotating connecting members 61 to rotate and slide relative to the first strip hole 41, the synchronization rod 63 can synchronously drive the second rotating connecting rod 62 on the same side to rotate and slide relative to the second strip hole 42, thereby playing the role of synchronously driving the lifting connecting rod 4 to rise and fall, and then enabling the four base feet 31 to simultaneously support or lower the wheels 2, thereby realizing the fixed state and moving state of the chassis device.

[0050] The present utility model further provides a rehabilitation training device, which includes the chassis device as described in the above embodiments.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A chassis device, characterized in that: The invention comprises a base plate, a plurality of wheels arranged under the base plate, four bases connected to the base plate so as to be slidable up and down, two lifting links arranged in parallel, a rotating shaft arranged perpendicular to the lifting links, two first rotating connectors fixedly sleeved on the rotating shaft, two second rotating connectors rotatably connected to the base plate, and a driving assembly, wherein: Each of the lifting links is connected to the upper ends of the two bases; A first strip-shaped hole is provided at one end of each lifting link close to the rotating shaft, and two first rotating connecting members are slidably pivotally connected to the two first strip-shaped holes in a one-to-one correspondence; A second strip-shaped hole is provided at one end of each lifting link away from the rotating shaft, and two second rotating connecting members are slidably pivotally connected to the two second strip-shaped holes in a one-to-one correspondence; The chassis device further comprises two synchronization rods arranged in parallel with the lifting link, and the two ends of each synchronization rod are pivotally connected to the first rotation connecting member and the second rotation connecting member on the same side; The driving assembly is connected to the rotating shaft and is used to drive the rotating shaft to drive the two first rotating connectors and the two second rotating connectors to rotate, thereby causing the two lifting links to drive the four base feet to move up and down.

2. The chassis device according to claim 1, characterized in that Each of the first rotating connecting members is provided with a pivot shaft, and the pivot shaft is slidably pivotally connected to the first bar-shaped hole.

3. The chassis device according to claim 1, characterized in that A pivot shaft is provided at one end of each second rotating connector, and the pivot shaft is slidably pivotally connected to the second bar-shaped hole; a base is fixedly provided on the bottom plate, and the base is pivotally connected to the other end of the second rotating connector.

4. The chassis device according to claim 1, characterized in that The driving assembly includes a push rod, a meshing rack and a gear; the push rod is connected to the rack, and the gear is fixedly sleeved on one end of the rotating shaft. In the working state, the push rod is extended and retracted, so that the rack drives the gear and the rotating shaft to rotate.

5. The chassis device according to claim 4, characterized in that: A slider is connected to one side of the rack, a linear guide rail is provided on the bottom plate, and the slider is slidably connected to the linear guide rail.

6. The chassis device according to claim 5, characterized in that: Both ends of the linear guide rail are provided with stoppers.

7. The chassis device according to claim 1, characterized in that: Two fixing seats are fixedly provided on the bottom plate, and the two fixing seats can be slidably sleeved on the two ends of the rotating shaft.

8. The chassis device according to claim 1, characterized in that Each of the base feet is connected to a fixed shaft; four copper sleeves are provided on the base plate; in an assembled state, the four fixed shafts are slidably connected to the four copper sleeves in a one-to-one correspondence.

9. The chassis device according to claim 1, characterized in that Two proximity sensors are provided at both ends of a lifting link for detecting whether the lifting link is extended or retracted into place.

10. A rehabilitation training device, characterized in that: The invention comprises a chassis device as claimed in any one of claims 1 to 9.

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