Portable base

Abstract

The invention discloses a portable base. The portable base comprises a supporting mechanism, a plurality of trundles, at least one pair of foot pad mechanisms and a switching mechanism. And any one of the trundles and the foot pad mechanism is in contact with the ground. The switching mechanism comprises a switching component, a linkage assembly and at least one pair of height adjusting components, the linkage assembly comprises a pair of swing rods, a pair of transmission rods and at least one pair of connecting rods, the switching component comprises a belt rotating shaft, and the swing rods can rotate in the vertical plane direction with the belt rotating shaft as the axis. The two ends of the connecting rod are connected with the supporting mechanism and the transmission rods respectively, the end, away from the belt rotating shaft, of each swing rod is connected with one transmission rod, and when the swing rods are driven by the belt rotating shaft to rotate, the swing rods are driven by the belt rotating shaft to rotate. The transmission rod is driven by the swing rod to move in the vertical plane direction perpendicular to the axial direction of the belt rotating shaft, and the transmission rod drives the foot pad mechanism to move through the height adjusting component.

Description

Technical Field

[0001] The invention relates to the technical field of rehabilitation training, in particular to a portable base. Background Art

[0002] Lower limb rehabilitation training equipment is equipment for patients with lower limb paralysis to perform lower limb rehabilitation training. Patients train on the lower limb rehabilitation training equipment to gradually restore the motor perception function of their lower limbs and eventually restore their daily living abilities such as walking with their lower limbs and going up and down stairs.

[0003] For patients whose mobility is recovering, the portable base is required to move the lower limb rehabilitation training device installed on the portable base to the bedside. The portable base usually has two states, namely a locked state and an unlocked state. When the portable base is in the locked state, the portable base can stand by the bedside to facilitate the patient to use the lower limb rehabilitation training device; when the portable base is in the unlocked state, the portable base can move relative to the ground to move the lower limb rehabilitation training device to a designated position.

[0004] The patent number "CN109966109A" discloses a bedside lower limb rehabilitation trainer with an adjustable base, wherein the bedside lower limb rehabilitation trainer with an adjustable base includes a width-adjustable base, which uses an eccentric wheel to squeeze a fixed foot so that the fixed foot moves down and contacts the ground, and the entire base is in a locked state. Since the fixed foot moves down a small distance, the size of the eccentric wheel is small, resulting in a small curvature of the moving trajectory generated by the rotation of the protruding part of the eccentric wheel, so it is more laborious for the user to switch states. In addition, at the moment when the protruding part of the eccentric wheel contacts the fixed foot, the two will collide, thereby generating noise, which is inconvenient to use. Summary of the invention

[0005] In order to solve the above technical problems and achieve at least one advantage of the present invention, the present invention provides a portable base, the portable base comprising:

[0006] Support mechanism;

[0007] A plurality of casters, wherein the plurality of casters are installed at intervals on a side of the support mechanism facing the ground;

[0008] at least one pair of foot pad mechanisms, the foot pad mechanisms being mounted on a side of the support mechanism facing the ground in a manner that the foot pad mechanisms can move vertically, and either the caster wheel or the foot pad mechanisms is in contact with the ground;

[0009] The switching mechanism comprises a switching component, a linkage assembly and at least one pair of height adjustment components, the linkage assembly comprises a pair of rocker arms, a pair of transmission rods and at least one pair of connecting rods, the switching component comprises a belt shaft, the belt shaft is rotatably mounted on the supporting mechanism, a pair of two rocker arms are symmetrically distributed and are both connected to the belt shaft, the rocker arm can rotate in a vertical plane direction with the belt shaft as the axis, the two ends of the connecting rod are respectively connected to the supporting mechanism and the transmission rod, a pair of two transmission rods are symmetrically distributed, and one end of each rocker arm away from the belt shaft is respectively connected to a transmission rod, when the rocker arm is rotated by the belt shaft, the transmission rod is driven by the rocker arm to move in a vertical plane direction perpendicular to the axial direction of the belt shaft, the height adjustment component is arranged on the transmission rod and the foot pad mechanism, and when the rocker arm drives the transmission rod to move, the transmission rod drives the foot pad mechanism to rise and fall through the height adjustment component.

[0010] According to one embodiment of the present invention, each of the height adjustment components includes a pressure column and a pressure wall, the pressure wall is formed on the transmission rod, the pressure column is installed on the foot pad mechanism, the pressure wall extends in a horizontal direction perpendicular to the axial direction of the belt shaft, and the pressure column is located below the pressure wall and maintains abutment with the pressure wall.

[0011] According to one embodiment of the present invention, the height adjustment component also includes a lifting assembly, which includes a lifting wall, which is arranged opposite to the pressure wall and together forms an insertion groove, and the insertion groove extends in a horizontal direction perpendicular to the axial direction of the belt shaft, and the pressure column is inserted into the insertion groove. When the transmission rod moves upward, the lifting wall applies an upward force to the pressure column.

[0012] According to an embodiment of the present invention, the pressing column is inserted into the inserting groove and maintains contact with the pressing wall and the lifting wall.

[0013] According to one embodiment of the present invention, the lifting assembly also includes an elastic return member, the foot pad mechanism and the supporting mechanism are connected to the elastic return member, and when the foot pad mechanism moves downward, the elastic return member undergoes elastic deformation and has a tendency to drive the foot pad mechanism to move upward.

[0014] According to an embodiment of the present invention, the pressure column is rotatably mounted on the foot pad mechanism, and the axis of the pressure column is parallel to the axis of the belt shaft.

[0015] According to one embodiment of the present invention, the switching component also includes at least one switching pedal group, the switching pedal group includes a first switching pedal, the belt shaft is connected to one end of the first switching pedal, and the first switching pedal extends to the outside away from one end of the belt shaft.

[0016] According to one embodiment of the present invention, the switching component also includes a gear set, the gear set includes a first gear and a second gear, the first gear is connected to the belt shaft, the second gear is rotatably mounted on the support mechanism, and the first gear and the second gear are meshed, the switching pedal set also includes a second switching pedal, the second switching pedal is connected to the second gear, and one end of the second switching pedal away from the second gear extends to the outside.

[0017] According to one embodiment of the present invention, the portable base also includes a shock absorbing mechanism, which includes a vertical buffer and a horizontal buffer. The vertical buffer and the horizontal buffer are both installed on the supporting mechanism. The vertical buffer is located on the upward moving path of the transmission rod, and the horizontal buffer is located on the moving path of the transmission rod in a horizontal direction perpendicular to the axial direction of the belt shaft.

[0018] According to one embodiment of the present invention, the foot pad mechanism includes a mounting member and a foot pad, the foot pad is mounted on the mounting member, the top pressure column is mounted on the mounting member, the mounting member can be mounted on the support mechanism in a vertically movable manner, the support mechanism forms a limiting movement structure, the mounting member forms a matching mechanism, the limiting movement structure and the matching mechanism are clamped together, either of the limiting movement structure and the matching mechanism is implemented as a groove extending in the vertical direction, and the other is implemented as a pin, the limiting movement structure and the matching mechanism cooperate to limit the vertical movement of the foot pad mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The schematic diagram of the structure of the portable base of the present invention is shown.

[0020] Figure 2 A partial structural schematic diagram of the portable base of the present invention is shown.

[0021] Figure 3 A cross-sectional view of an embodiment of the portable base according to the present invention is shown.

[0022] Figure 4 A cross-sectional view of another embodiment of the portable base of the present invention in the unlocked state is shown.

[0023] Figure 5 A cross-sectional view of another embodiment of the portable base of the present invention in the locked state is shown.

[0024] Figure 6 Shows Figure 5 Enlarged view of part A.

[0025] Figure 7A cross-sectional view of another embodiment of the portable base according to the present invention is shown. DETAILED DESCRIPTION

[0026] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0027] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which 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 orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0028] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0029] refer to Figures 1 to 7 A lower limb rehabilitation training device according to a preferred embodiment of the present invention will be described in detail below. The lower limb rehabilitation training device includes a portable base and lower limb rehabilitation training equipment.

[0030] The portable base includes a support mechanism 10, a plurality of casters 20, at least one pair of foot pad mechanisms 30 and a switching mechanism 40. The lower limb rehabilitation training device is installed on the support mechanism 10. The plurality of casters 20 are installed at intervals on the side of the support mechanism 10 facing the ground. The foot pad mechanism 30 is installed on the side of the support mechanism 10 facing the ground in a manner that it can be moved vertically, and each pair of two foot pad mechanisms 30 are spaced apart, wherein either the caster 20 or the foot pad mechanism 30 contacts the ground.

[0031] Specifically, when the casters 20 touch the ground, the portable base is in an unlocked state, and the portable base moves on the ground by rolling the casters 20, and then the portable base drives the lower limb rehabilitation training device to move to a designated position. When the foot pad mechanism 30 touches the ground, the portable base stops on the ground, and at this time, the portable base is in a locked state, ensuring that the portable base remains stable and motionless when the patient uses the lower limb rehabilitation training device.

[0032] In a preferred embodiment, the casters 20 are implemented as universal wheels to allow the portable base to be turned in any direction.

[0033] The switching mechanism 40 is assembled with the foot pad mechanism 30 , and the switching mechanism 40 is installed on the supporting mechanism 10 in a manner capable of driving the foot pad mechanism 30 to move vertically, so as to switch the state of the portable base.

[0034] Preferably, the switching mechanism 40 includes a switching member 41, a linkage assembly 42 and at least one pair of height adjustment members 43. The linkage assembly 42 includes a pair of swing rods 421, a pair of transmission rods 422 and at least one pair of connecting rods 423.

[0035] The switching member 41 includes a belt rotating shaft 411. The belt rotating shaft 411 is rotatably mounted on the support mechanism 10. A pair of two swing rods 421 are symmetrically distributed and are both connected to the belt rotating shaft 411. The swing rod 421 can rotate in the vertical plane direction with the belt rotating shaft 411 as the axis. The two ends of the connecting rod 423 are respectively connected to the support mechanism 10 and the transmission rod 422. A pair of two transmission rods 422 are symmetrically distributed, and one end of each swing rod 421 away from the belt rotating shaft 411 is respectively connected to a transmission rod 422. The swing rod 421, the transmission rod 422, the connecting rod 423 and the support mechanism 10 together form a double crank mechanism. When the swing rod 421 is rotated by the belt rotating shaft 411, the transmission rod 422 is driven by the swing rod 421 to translate along the vertical plane direction perpendicular to the axial direction of the belt rotating shaft 411. The height adjustment member 43 is provided on the transmission rod 422 and the foot pad mechanism 30 , and when the swing rod 421 drives the transmission rod 422 to move, the transmission rod 422 drives the foot pad mechanism 30 to rise and fall through the height adjustment member 43 .

[0036] In one embodiment, each of the height adjustment members 43 includes a pressing column 431 and a pressing wall 432. The pressing wall 432 is formed on the transmission rod 422; the pressing column 431 is installed on the foot pad mechanism 30. The pressing wall 432 extends in a horizontal direction perpendicular to the axial direction of the belt rotating shaft 411, and the pressing column 431 is located below the pressing wall 432 and maintains contact with the pressing wall 432.

[0037] When the belt shaft 411 rotates in a preset direction by a predetermined angle to drive the end of the swing rod 421 away from the belt shaft 411 to rotate from top to bottom, the end of the swing rod 421 away from the belt shaft 411 drives the transmission rod 422 to move downward along a horizontal plane perpendicular to the axial direction of the belt shaft 411 and in a direction away from the belt shaft 411, and then the transmission rod 422 presses down the pressing column 431 through the pressing wall 432, so that the foot pad mechanism 30 descends and contacts the ground, and the portable base switches from the unlocked state to the locked state.

[0038] When the belt shaft 411 rotates by a predetermined angle in a direction opposite to the preset direction to drive the end of the rocker rod 421 away from the belt shaft 411 to rotate from bottom to top, the end of the rocker rod 421 away from the belt shaft 411 drives the transmission rod 422 to move upward while moving along a horizontal plane perpendicular to the axial direction of the belt shaft 411 and in a direction close to the belt shaft 411, the foot pad mechanism 30 is subjected to an upward force or the support mechanism 10 is subjected to a downward force, so that the foot pad mechanism 30 moves upward, and then the caster 20 contacts the ground. At this time, the portable base is switched from the locked state to the unlocked state.

[0039] Those skilled in the art can understand that the present invention adopts a double crank mechanism, so that the curvature of the motion trajectory of the transmission rod 422 in the vertical plane is greater than the curvature of the motion trajectory of the protruding point of the existing eccentric wheel, and the movement of the transmission rod 422 is smoother than the movement of the protruding point of the eccentric wheel. Therefore, the transmission rod 422 drives the foot pad mechanism 30 to move through the height adjustment member 43, which is easier than the eccentric wheel rotating to squeeze the foot pad mechanism 30 down by the protruding point. Therefore, compared with the prior art, the present design can save more effort when switching.

[0040] Preferably, the portable base is provided with a plurality of pairs of the foot pad mechanisms 30, and the plurality of pairs of the foot pad mechanisms 30 are spaced apart along the length direction of the transmission rod 422. The lengths of the connecting rod 423 and the swing rod 421 are the same, and at this time, the swing rod 421, the transmission rod 422, the connecting rod 423 and the support mechanism 10 together form a parallelogram linkage mechanism. In this way, when the transmission rod 422 is driven by the swing rod 421, the distances moved in the vertical direction by each part of the transmission rod 422 are the same, so that all the foot pad mechanisms 30 are squeezed by the pressure wall 432 formed by the transmission rod 422 and move equidistantly at the same time, making the switching process of the portable base smoother.

[0041] Further, refer to Figure 3 The height adjustment member 43 further includes a lifting assembly 433, and the lifting assembly 433 includes a lifting wall 4331. The lifting wall 4331 is arranged opposite to the pressing wall 432 and together forms a plug-in slot 4301, and the plug-in slot 4301 extends in a horizontal direction perpendicular to the axial direction of the belt rotating shaft 411. The pressing column 431 is plugged into the plug-in slot 4301. When the belt shaft 411 rotates in a direction opposite to the preset direction to drive the end of the swing rod 421 away from the belt shaft 411 to rotate from bottom to top, the end of the swing rod 421 away from the belt shaft 411 pulls the transmission rod 422 along a horizontal plane perpendicular to the axial direction of the belt shaft 411 and moves upward in a direction close to the belt shaft 411, and the lifting wall 4331 applies an upward force to the pressing column 431, so that the foot pad mechanism 30 is lifted upward, and then the caster 20 contacts the ground, and the portable base switches from the locked state to the unlocked state.

[0042] Preferably, the pressing column 431 is inserted into the insertion slot 4301 and keeps in contact with the pressing wall 432 and the lifting wall 4331. In this way, the pressing column 431 can be prevented from colliding with the pressing wall 432 / the lifting wall 4331 when the transmission rod 422 moves in the vertical plane, thereby reducing the noise generated during the switching process.

[0043] It is worth mentioning that, in this embodiment, the lifting wall 4331 formed by the transmission rod 422 is used to lift the top pressure column 431 to retract the foot pad mechanism 30. Compared with the prior art method of using the elastic force of the elastic element to drive the foot pad mechanism 30 to move upward, in this embodiment, there is no need to overcome the elastic force of the elastic element when pushing the foot pad mechanism 30 downward, thereby reducing the resistance to be overcome in driving the foot pad mechanism 30 downward, and switching is more convenient and labor-saving.

[0044] As a preference, reference Figures 4 to 6, the lifting assembly 433 also includes an elastic reset member 4332. The two ends of the elastic reset member 4332 are respectively connected to the foot pad mechanism 30 and the support mechanism 10, and when the foot pad mechanism 30 moves downward, the elastic reset member 4332 undergoes elastic deformation and has a tendency to pull the foot pad mechanism 30 to move upward. That is to say, when the portable base is switched from the locked state to the unlocked state, while the lifting wall 4331 applies an upward force to the pressing column 431, the elastic reset member 4332 accelerates the upward movement of the foot pad mechanism 30 by its own elastic force, shortening the time required to switch from the locked state to the unlocked state and improving the stability of the movement of the foot pad mechanism 30.

[0045] It is worth mentioning that the reference Figure 7 , the lifting assembly 433 may not be provided with the lifting wall 4331, and in this case, the lifting assembly 433 is only provided with the elastic reset member 4332. When the portable base is switched from the locked state to the unlocked state, the foot pad mechanism 30 is only moved upward by the elastic force of the elastic reset member 4332, and the pressure wall 432 is kept in contact with the pressing column 431 under the elastic force of the elastic reset member 4332, so as to avoid collision between the pressing column 431 and the pressure wall 432, thereby reducing noise generated during the switching process.

[0046] In one example, the elastic return member 4332 is implemented as a spring.

[0047] Preferably, the pressure column 431 is rotatably mounted on the foot pad mechanism 30, and the axis of the pressure column 431 is parallel to the axis of the belt shaft 411. In this way, when the transmission rod 422 moves in the vertical plane, the pressure column 431 can convert the sliding friction in the horizontal direction generated by the pressure wall 432 and the lifting wall 4331 on itself into rolling friction, thereby reducing frictional resistance and saving effort when switching states.

[0048] Preferably, the switching member 41 further includes at least one switching pedal group 412, and the switching pedal group 412 further includes a first switching pedal 4121. The belt shaft 411 is connected to one end of the first switching pedal 4121. One end of the first switching pedal 4121 away from the belt shaft 411 extends to the outside for staff to step on. Stepping on the first switching pedal 4121 can drive the belt shaft 411 to rotate, thereby switching the state of the portable base.

[0049] In one embodiment, the state of the portable base is switched by stepping on or pushing up one end of the first switching pedal 4121 extending to the outside so that the belt shaft 411 can be rotated in any direction.

[0050] As a deformable, the switching member 41 also includes a gear set 413, and the gear set 413 includes a first gear 4131 and a second gear 4132. The first gear 4131 is connected to the belt shaft 411. The second gear 4132 is rotatably mounted on the support mechanism 10, and the first gear 4131 and the second gear 4132 are engaged. The switching pedal set 412 also includes a second switching pedal 4122. The second switching pedal 4122 is connected to the second gear 4132. One end of the second switching pedal 4122 away from the second gear 4132 extends to the outside to facilitate the staff to step on it.

[0051] When the first switching pedal 4121 is stepped on, the first switching pedal 4121 drives the belt shaft 411 and the first gear 4131 installed on the belt shaft 411 to rotate in a preset direction; at the same time, the first gear 4131 drives the second gear 4132 to rotate in a direction opposite to the preset direction, so that the second gear 4132 drives the second switching pedal 4122 to tilt away from one end of the second gear 4132. When switching the state of the portable base later, the staff can directly step on the second switching pedal 4122, so that the second gear 4132 rotates in a preset direction and drives the first gear 4131 meshing with it to rotate in a direction opposite to the preset direction, and the first switching pedal 4121 tilts away from one end of the first gear 4131. It can be seen that the actions of switching between the unlocked state and the locked state are the same. Compared with the previous implementation, this embodiment does not need to reserve a gap between the first switching pedal 4121 and the ground for the staff's toes to extend into after pressing down. In this way, the heights of the first switching pedal 4121 and the second switching pedal 4122 can be relatively reduced, which is convenient for stepping on and can avoid contaminating the staff's shoe surface.

[0052] Furthermore, the portable base also includes a shock absorbing mechanism 50.

[0053] The shock absorbing mechanism 50 includes a vertical buffer 51. The vertical buffer 51 is installed on the support mechanism 10 and is located on the upward movement path of the transmission rod 422 to avoid collision between the transmission rod 422 and the support mechanism 10 and reduce noise and vibration generated during switching.

[0054] The shock absorbing mechanism 50 further includes a horizontal buffer 52. The horizontal buffer 52 is installed on the support mechanism 10 and is located on the moving path of the transmission rod 422 in the horizontal direction perpendicular to the axial direction of the belt shaft 411, so as to avoid collision between the transmission rod 422 and the support mechanism 10 and reduce noise and vibration generated during switching.

[0055] In one example, the vertical buffer member 51 and the horizontal buffer member 52 are both implemented as rubber pads.

[0056] Further, the foot pad mechanism 30 includes a mounting member 31 and a foot pad 32. The foot pad 32 is mounted on the mounting member 31, and the top pressure column 431 is mounted on the mounting member 31. The mounting member 31 is mounted on the support mechanism 10 so as to be movable in the vertical direction. The support mechanism 10 forms a limit movement structure 1001, and the mounting member 31 forms a matching mechanism 3101. The limit movement structure 1001 and the matching mechanism 3101 are snap-connected. Either the limit movement structure 1001 or the matching mechanism 3101 is implemented as a groove extending in the vertical direction, and the other is implemented as a pin. The limit movement structure 1001 and the matching mechanism 3101 cooperate to limit the vertical movement of the foot pad mechanism 30.

[0057] Preferably, the foot pad 32 is threadedly connected to the mounting member 31, and the overall length of the foot pad mechanism 30 can be adjusted by rotating the foot pad 32, thereby improving the obstacle avoidance capability of the portable base in the unlocked state.

[0058] Preferably, the support mechanism 10 includes two side support members 11 and at least one main support member 12. The two side support members 11 are arranged relatively spaced apart, and the two ends of the main support member 12 are respectively connected to the two side support members 11. The casters 20 are mounted on the two side support members 11. The foot pad mechanism 30 is symmetrically mounted on the two side support members 11.

[0059] In one embodiment, the side support member 11 is detachably mounted to the main support member 12 to facilitate the handling and transportation of the support mechanism 10 .

[0060] The present invention also provides a method for switching the portable base, comprising the following steps:

[0061] (A) The belt shaft 411 rotates in a preset direction by a predetermined angle, so that the end of the swing rod 421 away from the belt shaft 411 rotates from top to bottom, and the end of the swing rod 421 away from the belt shaft 411 drives the transmission rod 422 to move downward along a horizontal plane perpendicular to the axial direction of the belt shaft 411 and in a direction away from the belt shaft 411, and then the transmission rod 422 presses down the top pressure column 431 through the pressure wall 432, so that the foot pad mechanism 30 descends and contacts the ground, and the portable base switches to the locked state.

[0062] (B) The belt shaft 411 rotates by a predetermined angle in a direction opposite to the preset direction, so that the end of the swing rod 421 away from the belt shaft 411 rotates from bottom to top, and the end of the swing rod 421 away from the belt shaft 411 drives the transmission rod 422 to move upward while moving along a horizontal plane perpendicular to the axial direction of the belt shaft 411 and in a direction close to the belt shaft 411, and the foot pad mechanism 30 is subjected to an upward force or the support mechanism 10 is subjected to a downward force, so that the foot pad mechanism 30 moves upward, and then the caster 20 contacts the ground, and the portable base is switched to the unlocked state.

[0063] In one embodiment, when the belt shaft 411 rotates in a direction opposite to the preset direction, the end of the rocker arm 421 away from the belt shaft 411 pulls the transmission rod 422 and moves upward along a horizontal plane perpendicular to the axial direction of the belt shaft 411 and in a direction close to the belt shaft 411, and the lifting wall 4331 applies an upward force to the pressure column 431, so that the foot pad mechanism 30 is lifted upward, and then the caster 20 contacts the ground.

[0064] As a deformable device, when the belt shaft 411 rotates in a direction opposite to the preset direction, the end of the rocker arm 421 away from the belt shaft 411 pulls the transmission rod 422 while moving upward along a horizontal plane perpendicular to the axial direction of the belt shaft 411 and in a direction close to the belt shaft 411, and the elastic reset member 4332 uses its own elastic force to pull the foot pad mechanism 30 upward.

[0065] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. Portable base, characterized in that: The portable base comprises: Support mechanism; A plurality of casters, wherein the plurality of casters are installed at intervals on a side of the support mechanism facing the ground; at least one pair of foot pad mechanisms, the foot pad mechanisms being mounted on a side of the support mechanism facing the ground in a manner that the foot pad mechanisms can move vertically, and either the caster wheel or the foot pad mechanisms is in contact with the ground; The switching mechanism comprises a switching component, a linkage assembly and at least one pair of height adjustment components, the linkage assembly comprises a pair of rocker arms, a pair of transmission rods and at least one pair of connecting rods, the switching component comprises a belt shaft, the belt shaft is rotatably mounted on the supporting mechanism, a pair of two rocker arms are symmetrically distributed and are both connected to the belt shaft, the rocker arm can rotate in a vertical plane direction with the belt shaft as the axis, the two ends of the connecting rod are respectively connected to the supporting mechanism and the transmission rod, a pair of two transmission rods are symmetrically distributed, and one end of each rocker arm away from the belt shaft is respectively connected to a transmission rod, when the rocker arm is rotated by the belt shaft, the transmission rod is driven by the rocker arm to move in a vertical plane direction perpendicular to the axial direction of the belt shaft, the height adjustment component is arranged on the transmission rod and the foot pad mechanism, and when the rocker arm drives the transmission rod to move, the transmission rod drives the foot pad mechanism to rise and fall through the height adjustment component.

2. The portable base according to claim 1, characterized in that: Each of the height adjustment components includes a pressure column and a pressure wall, the pressure wall is formed on the transmission rod, the pressure column is installed on the foot pad mechanism, the pressure wall extends in a horizontal direction perpendicular to the axial direction of the belt shaft, the pressure column is located below the pressure wall and maintains abutment with the pressure wall.

3. The portable base according to claim 2, characterized in that: The height adjustment component also includes a lifting component, which includes a lifting wall. The lifting wall is arranged opposite to the pressure wall and together form an insertion groove. The insertion groove extends in a horizontal direction perpendicular to the axial direction of the belt shaft. The pressure column is inserted into the insertion groove. When the transmission rod moves upward, the lifting wall applies an upward force to the pressure column.

4. The portable base according to claim 3, characterized in that: The pressing column is inserted into the inserting groove and is kept in contact with the pressing wall and the lifting wall.

5. The portable base according to claim 3 or 4, characterized in that: The lifting assembly also includes an elastic reset member, and the foot pad mechanism and the supporting mechanism are connected to the elastic reset member. When the foot pad mechanism moves downward, the elastic reset member undergoes elastic deformation and has a tendency to drive the foot pad mechanism to move upward.

6. The portable base according to claim 5, characterized in that: The pressing column is rotatably mounted on the foot pad mechanism, and the axis of the pressing column is parallel to the axis of the belt shaft.

7. The portable base according to claim 6, characterized in that: The switching component further includes at least one switching pedal group, the switching pedal group includes a first switching pedal, the belt shaft is connected to one end of the first switching pedal, and one end of the first switching pedal away from the belt shaft extends to the outside.

8. The portable base according to claim 7, characterized in that: The switching component also includes a gear set, which includes a first gear and a second gear, the first gear is connected to the belt shaft, the second gear is rotatably mounted on the support mechanism, and the first gear and the second gear are meshed, and the switching pedal set also includes a second switching pedal, the second switching pedal is connected to the second gear, and one end of the second switching pedal away from the second gear extends to the outside.

9. The portable base according to claim 8, characterized in that: The portable base also includes a shock absorbing mechanism, which includes a vertical buffer and a horizontal buffer. The vertical buffer and the horizontal buffer are both installed on the supporting mechanism. The vertical buffer is located on the upward moving path of the transmission rod, and the horizontal buffer is located on the moving path of the transmission rod in a horizontal direction perpendicular to the axial direction of the belt shaft.

10. The portable base according to claim 9, characterized in that: The foot pad mechanism includes a mounting piece and a foot pad, the foot pad is mounted on the mounting piece, the top pressure column is mounted on the mounting piece, the mounting piece can be mounted on the support mechanism vertically movably, the support mechanism forms a movement limiting structure, the mounting piece forms a matching mechanism, the movement limiting structure and the matching mechanism are clamped, and the movement limiting structure and the matching mechanism cooperate to limit the vertical movement of the foot pad mechanism.

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