Chassis device and rehabilitation training equipment comprising same
By designing a chassis device that drives the lifting link up and downward movement, the problem of low fixing efficiency of the chassis device in the prior art is solved, and more efficient fixing and traveling state switching is achieved.
Patent Information
- Application Number
- CN202421475419.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-06-25
AI Technical Summary
When the existing chassis device is fixed or released, each chassis wheel needs to be operated, resulting in a long operating time and low fixed efficiency.
A chassis device is designed, which drives the rotating connector to rotate through the rotating shaft, thereby moving the lifting link up and down, thereby realizing the support or lowering of the four bottom feet, thereby realizing the fixing and traveling state of the chassis device.
This design improves the fixed working efficiency of the chassis device and simplifies the operation steps. Compared with the method of locking the four wheels separately, it realizes more efficient fixed and traveling state switching.
Smart Images
Figure CN222597332U_ABST
Abstract
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 the functions of moving and fixing. For example, a universal wheel with a brake is set under the chassis. The staff 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 utility model is used to introduce the concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this disclosure is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.
[0005] The utility model provides a chassis device and rehabilitation training equipment comprising 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, including a bottom plate, a plurality of wheels arranged under the bottom plate, four feet connected to the bottom 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 rotating connectors fixedly sleeved on the rotating shaft, and a driving assembly, wherein:
[0007] Each of the lifting links is connected to the upper ends of the two bases;
[0008] Each of the lifting links is provided with a strip-shaped hole, and the two rotating connecting members are slidably pivotally connected to the two strip-shaped holes in a one-to-one correspondence;
[0009] The driving assembly is connected to the rotating shaft and is used to drive the rotating shaft to drive the two rotating connecting parts to rotate, thereby causing the two lifting connecting rods to drive the four base feet to rise and fall.
[0010] Optionally, each of the rotating connecting members is provided with a pivot shaft, and the pivot shaft is slidably pivotally connected to the bar-shaped hole.
[0011] Optionally, 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 a working state, the push rod is extended and retracted to make the rack drive the gear and the rotating shaft to rotate.
[0012] Optionally, the push rod is one of the following: an electric push rod, an electromagnetic push rod.
[0013] Optionally, a slider is connected to one side of the rack, a linear guide is provided on the base plate, and the slider is slidably connected to the linear guide.
[0014] Optionally, both ends of the linear guide rail are provided with stoppers.
[0015] 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.
[0016] Optionally, each of the base feet is connected to a fixed shaft; four copper sleeves are arranged 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.
[0017] Optionally, two proximity sensors are provided at both ends of a lifting link to detect whether the lifting link is fully extended or retracted.
[0018] In a second aspect, the utility model provides a rehabilitation training device, comprising a chassis device as described in any embodiment of the first aspect.
[0019] The above-mentioned embodiments of the utility model have the following beneficial effects: through the chassis device of some embodiments of the utility model, the working efficiency of fixing the chassis device can be improved and the operation steps can be simplified.
[0020] Specifically, by driving the rotating shaft through the driving assembly, the two rotating connectors sleeved on the rotating shaft can be rotated. The above-mentioned two rotating connectors are also slidably pivoted to the bar holes of the two lifting links. Two bases are also connected to the two ends of each lifting link, and each base is also slidably connected to the bottom plate in the vertical direction. In this way, under the restriction of the sliding direction of the four bases, when the rotating connector rotates, it can produce relative rotation and sliding with the bar holes, so that the two lifting links move up and down. The four bases can support or lower the bottom plate and the wheels to achieve the fixed state and the moving state of the chassis device. Compared with the method of locking the four wheels separately, the chassis device realizes the support of the four bases through the rotation of the rotating shaft, which improves the working efficiency of the fixed chassis device. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] 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 creative work.
[0022] Figure 1 It is a structural schematic diagram of an embodiment of the chassis device of the utility model;
[0023] Figure 2 It is a structural schematic diagram of another embodiment of the chassis device of the utility model.
[0024] Description of reference numerals:
[0025] 1: bottom plate; 2: wheel; 31: foot; 32: fixed shaft; 4: lifting connecting rod; 41: strip hole; 5: rotating shaft; 6: rotating connecting piece; 7: fixed seat; 8: driving assembly; 81: push rod; 82: rack; 83: gear; 84: slider; 85: linear guide rail; 9: stopper. DETAILED DESCRIPTION
[0026] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] 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" and the like 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.
[0028] 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 technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the 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 indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0029] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.
[0030] See also Figure 1 and Figure 2 , Figure 1 It is a structural schematic diagram of an embodiment of the chassis device of the utility model; Figure 2 FIG. 2 is a schematic structural diagram of another embodiment of the chassis device of the present utility model. Figure 1 and Figure 2 As shown, the chassis device comprises a bottom plate 1 and a plurality of wheels 2 arranged under the bottom plate 1. The wheels 2 are used for the movement of the chassis device.
[0031] Four feet 31 are also provided at 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.
[0032] Two parallel lifting links 4 are arranged on the bottom plate 1, which are respectively located on the left and right sides 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 strip hole 41.
[0033] A rotating shaft 5 is provided in a direction perpendicular to the lifting link 4, and the rotating shaft 5 is pivotally connected to the bottom plate 1 and can rotate around its own axis. Two fixing seats 7 can be fixed on the bottom plate 1, and the two fixing seats 7 can be slidably sleeved on both ends of the rotating shaft 5 to achieve the function of supporting and fixing the rotating shaft 5.
[0034] Two rotating connectors 6 are also fixedly mounted on the rotating shaft 5. Each rotating connector 6 can be provided with a pivot shaft, which is slidably pivotally connected to the strip hole 41. Therefore, when the rotating shaft 5 rotates, the two rotating connectors 6 can be driven to rotate. Under the limitation that the foot 31 is slidably connected to the bottom plate 1, the pivot shaft can rotate relative to the strip hole 41 and slide along the strip hole 41, so that the lifting link 4 drives the foot 31 to rise and fall. When the foot 31 rises, the wheel 2 contacts the ground, and the chassis device can move. When the foot 31 falls, the wheel 2 will be lifted up to fix the chassis device.
[0035] Furthermore, the upper end of the foot 31 may be connected to a fixed shaft 32, and the fixed shaft 32 is slidably connected to the bottom plate 1. Furthermore, four copper sleeves may be provided on the bottom plate 1, and are slidably connected to the four fixed shafts 32 in a one-to-one correspondence.
[0036] 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, which is directly connected to one end of the rotating shaft 5, and the rotating shaft 5 is rotated under the drive of the motor.
[0037] 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 to the left end ( 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 reciprocate, 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.
[0038] Furthermore, a slider 84 is connected to one side of the rack 82, and a linear guide 85 is fixed on the bottom plate, and the slider 84 is slidably connected to the linear guide 85. In this way, the linear guide 85 can limit the moving 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.
[0039] 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 1Two 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 detect whether the lifting link 4 is fully extended or retracted. 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 the position, 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 another proximity sensor, indicating that the base 31 has dropped to the position, 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.
[0040] The utility model causes the two rotating connectors 6 and the strip-shaped holes 41 to rotate and slide relative to each other through the rotation of the rotating shaft 5, thereby causing the two lifting links 4 to reciprocate up and down. This causes the four bases 31 to lift or lower the wheels 2, thereby realizing the fixed state and the moving state of the chassis device. In other words, the switching between the two states can be realized as long as the rotation of the rotating shaft 5 is completed. In this way, the working efficiency of fixing the chassis device can be improved.
[0041] 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 guide 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.
[0042] The utility model also provides a rehabilitation training device, which comprises the chassis device as described in the above embodiments.
[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A chassis device, characterized in that: The invention comprises a bottom plate, a plurality of wheels arranged under the bottom plate, four feet connected to the bottom 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 rotating connectors fixedly sleeved on the rotating shaft, and a driving assembly, wherein: Each of the lifting links is connected to the upper ends of the two bases; Each of the lifting links is provided with a strip-shaped hole, and the two rotating connecting members are slidably pivotally connected to the two strip-shaped holes in a one-to-one correspondence; The driving assembly is connected to the rotating shaft and is used to drive the rotating shaft to drive the two rotating connecting parts to rotate, thereby causing the two lifting connecting rods to drive the four base feet to rise and fall.
2. The chassis device according to claim 1, characterized in that: Each of the rotating connecting members is provided with a pivot shaft, and the pivot shaft is slidably pivotally connected to the bar-shaped hole.
3. 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.
4. The chassis device according to claim 3, characterized in that: The actuator is one of the following: Electric linear actuator, electromagnetic linear actuator.
5. The chassis device according to claim 3, characterized in that: A sliding block is connected to one side of the rack, a linear guide rail is arranged on the bottom plate, and the sliding block is slidably connected to the linear guide rail.
6. The chassis device according to claim 5, characterized in that: Stop blocks are arranged at both ends of the linear guide rail.
7. The chassis device according to claim 1, characterized in that: Two fixing seats are fixedly arranged 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 with a fixed shaft; four copper sleeves are arranged on the bottom plate; in the assembled state, the four fixed shafts are slidably connected with 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 arranged at both ends of a lifting link to detect whether the lifting link is extended or retracted in place.
10. A rehabilitation training device, characterized in that: Comprising a chassis device as claimed in any one of claims 1-9.