A hand controller for controlling a linear actuator and a lifting platform

Abstract

The present invention discloses a hand controller and a lifting platform for controlling a linear actuator, which relates to the field of linear drive technology, and includes a mounting seat, the hand controller also includes a rotating shell, the rotating shell is rotatably mounted on the mounting seat, and a control unit and a detection element are provided in the hand controller, the detection element is used to detect the rotation position change of the rotating shell, and transmit the signal to an external controller through the control unit, and the external controller drives the linear actuator to extend and retract according to the signal of the control unit. The present invention can save the space of the operator, has a compact and beautiful structure, a high degree of appearance integrity, and avoids the situation of false triggering.

Description

[Technical field]

[0001] The present invention relates to the field of linear drive technology, and in particular to a hand controller and a lifting platform for controlling a linear actuator. [Background technology]

[0002] Electric lifts are commonly used in residential, office and medical fields, such as height-adjustable desks, kitchen tables, office desks and medical beds. In the prior art, operators mostly use mechanical switches, physical buttons, paddles, touch and other methods to input lifting and other commands. Operation modes include long press lifting, tap lifting, one-button lifting and so on. Mechanical switches and physical buttons have high requirements for the consistency of key force, and mechanical and physical buttons destroy the integrity and aesthetics of the operator surface; in addition, the gap between the buttons is prone to accumulate dust and cause button blockage. The touch method is mostly capacitive touch buttons, which may be falsely triggered, causing inconvenience in use. [Summary of the invention]

[0003] In order to solve the above problems, the present invention provides a new type of hand controller, which can save the space of the operator, has a compact and beautiful structure, a high degree of appearance integrity, and avoids the situation of false triggering.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] A hand controller for controlling a linear actuator comprises a mounting seat, the hand controller further comprising a rotating shell for manual rotation operation, the rotating shell being rotatably mounted on the mounting seat, the hand controller being provided with a control unit and a detection element electrically connected to the control unit, the detection element being used to detect a rotational position change of the rotating shell and transmit a signal to an external controller through the control unit, and the external controller driving the linear actuator to extend and retract according to the signal of the control unit.

[0006] Further, the rotating shell has an initial position and an operating position, the operating position includes a first operating position and a second operating position, the direction in which the rotating shell rotates from the initial position to the first operating position is opposite to the direction in which the rotating shell rotates from the initial position to the second operating position, when rotating from the initial position to the first operating position, the linear actuator is in an extended state, and when rotating from the initial position to the second operating position, the linear actuator is in a contracted state.

[0007] Furthermore, the linear actuator stops extending when the rotating shell returns to the initial position from the first operating position, and stops contracting when the rotating shell returns to the initial position from the second operating position; or the linear actuator stops contracting when the rotating shell returns to the initial position from the first operating position, and stops extending when the rotating shell returns to the initial position from the second operating position.

[0008] Preferably, the detection element is a Hall effect sensor, and a magnet is provided in the hand controller. The surface of the magnet generates a changing magnetic field, and the Hall effect sensor is within the magnetic field range of the magnet. One of the magnet and the Hall effect sensor is mounted on the inner wall of the rotating housing, and the other is fixed to the mounting seat.

[0009] Preferably, the detection element is one of a rotation angle sensor, a rotary encoder, a variable resistor, and a photodetector.

[0010] Preferably, an elastic element is provided on the mounting seat, and a push block is provided on the inner wall of the rotating shell. The rotating shell has an initial position and an operating position. The rotating shell rotates from the initial position to the operating position, and the push block pushes the elastic element to undergo elastic deformation. The restoring force of the elastic element pushes the rotating shell to return from the operating position to the initial position.

[0011] Preferably, the elastic element is a torsion spring, which includes a spiral body and a first torsion arm and a second torsion arm extending from the spiral body. A mounting column is provided at the center of the mounting seat. The push block includes a first push block and a second push block. The mounting column is inserted into the spiral body. The first torsion arm abuts against the first push block, and the second torsion arm abuts against the second push block. When the rotating shell rotates from the initial position to the operating position, one of the first torsion arm and the second torsion arm is pushed by the push block to undergo elastic deformation.

[0012] Preferably, the elastic element includes a first spring and a second spring, the mounting seat is provided with a first mounting groove, the first spring and the second spring are installed in the first mounting groove, the first spring and the second spring simultaneously abut against the push block, the rotating shell rotates from the initial position to the operating position, and one of the first spring and the second spring is pushed by the push block to undergo elastic deformation.

[0013] Preferably, the hand controller further comprises a display unit, wherein the display unit is electrically connected to the control unit, an external controller transmits height information of the linear actuator to the control unit, and the control unit displays the height information through the display unit.

[0014] In addition, the present invention also discloses a lifting platform, including a platform, an external controller and a linear actuator, the lifting platform also includes a hand controller described in any one of the above items, the hand controller is electrically or wirelessly connected to the external controller, the external controller is electrically connected to the linear actuator, the linear actuator is connected to the platform, the hand controller rotates and transmits a signal to the external controller, the external controller drives the linear actuator according to the signal of the hand controller, and the linear actuator drives the platform to move.

[0015] After adopting the above technical solution, the present invention has the following advantages:

[0016] Since the adjustment operation is performed by rotating the side wall of the hand controller, the integrity and aesthetics of the controller surface are maintained. The hand controller is compact and beautiful, saves space, and avoids misoperation caused by capacitor triggering. At the same time, the mechanical buttons are eliminated, thus avoiding the disadvantage of dust easily accumulating in the button gaps. The hand controller adopts magnetic inductive control, which responds quickly and accurately; the operation has a display screen that can display the height of the linear actuator in real time, which is convenient for users to use. In addition, the hand controller has a memory function that can memorize different heights, which is convenient for users to quickly and accurately reach the preset position, further facilitating user use.

[0017] The beneficial effects that can be achieved by the lifting platform disclosed in the present invention are the same as those of the hand controller described above, and the derivation processes of the two are similar, so they will not be repeated here.

[0018] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. The best embodiments or means of the present invention will be described in detail in conjunction with the drawings, but they are not intended to limit the technical solutions of the present invention. In addition, there are multiple features, elements, and components that appear in each of the following texts and drawings, and different symbols or numbers are marked for convenience, but they all represent components with the same or similar structures or functions.

Brief Description of the Drawings

[0019] The present invention will be further described below in conjunction with the accompanying drawings:

[0020] Figure 1 is an exploded view of the hand controller in the first embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of the hand controller in the initial position in the first embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of the hand controller in the operating position in the first embodiment of the present invention;

[0023] Figure 4This is an operation flow chart of Embodiment 1 of the present invention;

[0024] Figure 5 is an exploded diagram of a hand controller in Embodiment 2 of the present invention;

[0025] Figure 6 is a schematic diagram of the hand controller in the initial position in the second embodiment of the present invention;

[0026] Figure 7 is a schematic diagram of the hand controller in the operating position in the second embodiment of the present invention;

[0027] Figure 8 is an exploded diagram of the hand controller in the third embodiment of the present invention;

[0028] Fig. 9 This is an overall schematic diagram of Embodiment 5 of the present invention;

[0029] In the attached figure:

[0030] 1-mounting base, 2-rotating housing, 3-magnet, 4-elastic element, 5-circuit board, 6-pressure cover, 7-control panel, 8-external controller, 9-linear actuator, 11-connecting base, 12-mounting slide rail, 13-screw hole column, 21-push block, 211-first push block, 212-second push block, 41-first spring, 42-second spring, 51-sensor, 52-control unit, 53-display, 54-memory, 55-control key, I-table top, II-hand controller, III-connecting frame, IV-connecting frame, V-support foot. [Specific implementation method]

[0031] The technical solutions of the embodiments of the present invention are explained and described below in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0032] References in this specification to "one embodiment" or "an example" or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment itself may be included in at least one embodiment of the present patent disclosure. The appearance of the phrase "in one embodiment" in various places in the specification does not necessarily refer to the same embodiment.

[0033] In the description of the embodiments of the present invention, the terms "up", "down", "left", "right", "lateral", "longitudinal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and are not required that the present invention must be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0034] Embodiment 1:

[0035] This embodiment provides a hand controller.

[0036] like Figures 1 to 4 As shown, a hand controller comprises a mounting base 1, a magnet 3, a sensor 51, a control unit 52, a display 53, a memory 54, a rotating housing 2, a circuit board 5, a pressure cover 6 and a control panel 7. A connection base 11 for mounting the hand controller at a specific position is provided on one side of the mounting base 1, and a mounting rail 12 is provided on the other side. The rotating housing 2 is mounted on the rotating rail 12, and its inner wall cooperates with the outer wall of the rotating rail 12 to achieve a rotating connection. In this embodiment, the magnet 3 is an arc-shaped magnet with a surface treated to produce a variable magnetic field area. The magnet 3 is fixedly mounted on the inner wall of the rotating housing 2 and rotates with the rotation of the rotating housing 2. The sensor 51, the control unit 52, the memory 54 and the display 53 are mounted on the circuit board 5, and the sensor 51 is within the effective magnetic field range of the magnet 3. The pressure cover 6 is arranged on the outside of the circuit board 5. A screw hole column 13 is provided on one side of the mounting base 1 located on the rotating housing 2, and mounting holes are respectively provided on the circuit board 5 and the pressure cover 6. The screw passes through the mounting hole and is screwed into the screw hole column 13 to fix the circuit board 5 and the pressure cover 6 on the mounting base 1. The rotating housing 2 is fitted with the pressure cover 6 in a clearance, and the inner wall of the rotating housing 2 is provided with a step, and the pressure cover 6 cooperates with the step to prevent the rotating housing 2 from falling off. The pressure cover 6 is provided with an escape hole for the display 53 to be exposed, and the display 53 is located at the escape hole position. The control panel 7 is attached to the outer side of the pressure cover 6, and the control panel 7 is provided with a control key 55.

[0037] The mounting seat 1 is provided with an elastic element 4. In this embodiment, the elastic element 4 is a torsion spring. The torsion spring includes a spiral body and a first torsion arm and a second torsion arm extending from the spiral body. The first torsion arm is located on the left side of the vertical axis, and the second torsion arm is located on the right side of the vertical axis. The mounting seat 1 is provided with a mounting column at the center of one side facing the rotating shell 2, and the mounting column is inserted into the spiral body. A push block 21 is provided on the inner wall of the rotating shell 2. The push block 21 includes a first push block 211 and a second push block 212. The first push block 211 and the second push block 212 are symmetrical with respect to the vertical axis. The magnet 3 is an arc magnet, the arc of which matches the rotating shell 2, and is installed at a position facing the first push block 211 and the second push block 212. The first torsion arm abuts against the first push block 211, and the second torsion arm abuts against the second push block 212. In this embodiment, in addition to the installation purpose, the screw hole column 13 also serves as a limiter for the two torsion arms of the torsion spring. The rotating housing 2 has an initial position and an operating position. In the initial state, the push block 21 is located on the vertical axis of the hand controller, the first torsion arm and the second torsion arm are symmetrical relative to the vertical axis, the torsion spring does not undergo elastic deformation, or the deformation of the first torsion arm and the second torsion arm relative to the vertical axis is equal. The operating position includes a first operating position and a second operating position. In this embodiment, the direction of rotation from the initial position to the first operating position is set to be clockwise, and the direction of rotation from the initial position to the second operating position is counterclockwise, and the two directions are opposite. The rotating shell 2 rotates from the initial position to the first operating position, the first push block 211 pushes the first torsion arm, the screw hole column 13 limits and blocks the second torsion arm, so that the torsion spring undergoes elastic deformation, the rotating shell 2 rotates from the initial position to the second operating position, the second push block 212 pushes the second torsion arm, the screw hole column 13 limits and blocks the first torsion arm, so that the torsion spring undergoes elastic deformation, the rotation is stopped and the rotating shell 2 is released, and the restoring force of the torsion arm that is pushed to undergo elastic deformation pushes the rotating shell 2 to automatically return to the initial position from the first operating position or the second operating position.

[0038] In the embodiment, the sensor 51 is a linear Hall effect sensor, model SS39ET. The sensor 51 is electrically connected to the control unit 52, the control unit 52 is electrically connected to the external controller 8, and the external controller 8 is electrically connected to the linear actuator 9. The hand controller 2 rotates, driving the sensor 51 to detect the magnetic induction intensity and direction of different positions of the magnet 3, and transmits the signal to the external controller 8 through the control unit 52. The external controller 8 drives the linear actuator 9 to extend or contract according to the signal of the control unit 52. When the rotating housing 2 rotates from the initial position to the first operating position, the linear actuator 9 is in an extended state. When the rotating housing 2 rotates from the initial position to the second operating position, the linear actuator 9 is in a contracted state. When the rotating housing 2 stops rotating and is released, the rotating housing 2 automatically returns to the initial position from the first operating position or the second operating position by the restoring force of the torsion spring. When the rotating housing 2 returns to the initial position from the first operating position, the linear actuator 9 stops extending. When the rotating housing 2 returns to the initial position from the second operating position, the linear actuator 9 stops contracting.

[0039] The display 53 is electrically connected to the control unit 52, and the memory 54 is electrically connected to the control unit 52. The external controller 8 transmits the height signal of the linear actuator 9 to the control unit 52, and the control unit 52 displays the height information through the display 53. The memory 54 stores a number of operation instructions and the height corresponding to the operation instructions. When the operation instruction is triggered, the control unit 52 drives the linear actuator 9 to reach the corresponding height through the external controller 8. The control panel 7 is provided with control keys 55 corresponding to the number of operation instructions, and the control keys 55 are connected to the memory 54. The operation instruction is triggered by the control keys 55.

[0040] The sensor 51 converts the magnetic induction intensity and direction of the magnet 3 at different positions into a voltage signal and outputs it to the control unit 52. At the initial position, the magnetic induction intensity is 0, and the sensor 51 outputs an intermediate voltage; at the operating position, the magnetic induction intensity and direction detected by the sensor 51 change, so the voltage output by the sensor 51 increases or decreases linearly based on the intermediate voltage. The increase or decrease in the output voltage of the sensor 51 can be used to distinguish between extension and contraction, and the amplitude of the increase or decrease in voltage can be used to convert the height of the extension. The control unit 52 receives the voltage signal from the sensor 51, and the control unit 52 processes the voltage signal and converts it into a telescopic instruction and then transmits it to the external controller 8. The external controller 8 sends a signal to the linear actuator 9 to control the extension of the linear actuator 9. At the same time, the external controller 8 feeds back the height information to the display 53 for display. After releasing the hand, the hand controller 2 automatically rotates to the initial position, and the sensor 51 detects that the magnetic induction intensity returns to 0, and the telescopic action stops.

[0041] Embodiment 2:

[0042] like Figures 5 to 7As shown, the present embodiment is different from the first embodiment in that, in the present embodiment, the elastic element 4 includes a first spring 41 and a second spring 42, a first mounting groove is provided on the mounting seat 1, the first spring 41 and the second spring 42 are installed in the first mounting groove, a push block 21 is provided on the inner wall of the rotating housing 2, the first spring 41 and the second spring 42 are simultaneously against the push block 21, the first spring 41 is located on the left side of the push block 21, and the second spring 42 is located on the right side of the push block 21. The magnet 3 is a bar magnet and is fixedly installed at the push block 21. The rotating housing 2 has an initial position and an operating position. In the initial position, the first spring 41 and the second spring 42 are not elastically deformed and are in a natural state, or the deformation of the first spring 41 and the second spring 42 is equal. The operating position includes a first operating position and a second operating position. In the present embodiment, the direction of rotation from the initial position to the first operating position is set to be clockwise, and the direction of rotation from the initial position to the second operating position is counterclockwise, and the two directions are opposite. When the rotating housing 2 rotates from the initial position to the first operating position, the second spring 42 is pushed by the push block 21 to undergo elastic deformation, the first spring 41 is in a natural state, and the linear actuator 9 is in an extended state. When the rotating housing 2 rotates from the initial position to the second operating position, the first spring 41 is pushed by the push block 21 to undergo elastic deformation, the second spring 42 is in a natural state, and the linear actuator 9 is in a contracted state. When the rotating housing 2 stops rotating and is released, the restoring force of the spring that is pushed to undergo elastic deformation pushes the rotating housing 2 to automatically return to the initial position from the first operating position or the second operating position. When the rotating housing 2 returns to the initial position from the first operating position, the linear actuator 9 stops extending, and when the rotating housing returns to the initial position from the second operating position, the linear actuator 9 stops contracting.

[0043] Embodiment 3

[0044] like Figure 8 As shown, this embodiment is different from the first embodiment in that, in this embodiment, the elastic element 4 is a spring, a second mounting groove is provided on the mounting seat 1, the spring is installed in the second mounting groove, and the push block 21 extends into the gap between two adjacent coils of the spring. In the initial position, the spring does not undergo elastic deformation, or with the push block 21 as the center line, the deformation amounts of the springs on the left and right sides of the push block 21 are equal.

[0045] Embodiment 4

[0046] The difference between this embodiment and the first embodiment is that in this embodiment, the detection element is selected from one of a rotation angle sensor, a rotary encoder, a variable resistor, and a light detector.

[0047] Embodiment 5

[0048] The present embodiment provides a lifting platform, including a platform I, a hand controller II, an external controller 8, a linear actuator 9, a connecting frame III, two legs V and two connecting frames IV. The "external" in the external controller 8 refers to the outside of the hand controller II. The platform I is rectangular, with the upward side being the use surface and the downward side being the installation surface. The connecting frame IV is made of angle steel, and the two connecting frames IV are respectively installed on the installation surface of the platform I parallel to the two short sides of the platform I, and the connecting frame III is installed between the two connecting frames IV on the installation surface of the platform I. The external controller 8 is installed in the middle position of the connecting frame III. The linear actuator 9 serves as a support frame of the lifting platform and is installed with the platform I through the connecting frame IV. In the present embodiment, the linear actuator 9 preferably adopts an electric push rod. At the same time, in order to maintain the appearance, the electric push rod is arranged in the telescopic rod, and the telescopic rod adopts a square telescopic rod. A leg V is provided at the other end of the telescopic rod to make the lifting platform more stable. Hand controller II is installed on the installation surface of table I, close to the long side of table I, and is electrically connected to external controller 8 through a wire. Hand controller II rotates and transmits a signal to external controller 8. External controller 8 drives linear actuator 9 according to the signal of hand controller II, and linear actuator 9 drives table I to move.

[0049] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A hand controller for controlling a linear actuator, comprising a mounting seat, characterized in that: The hand controller also includes a rotating shell for manual rotation operation, the rotating shell is rotatably mounted on the mounting seat, a control unit and a detection element electrically connected to the control unit are provided in the hand controller, the detection element is used to detect the rotation position change of the rotating shell, and transmit the signal to the external controller through the control unit, and the external controller drives the linear actuator to extend and retract according to the signal of the control unit; an elastic element is provided on the mounting seat, and a push block is provided on the inner wall of the rotating shell, the rotating shell has an initial position and an operating position, the rotating shell rotates from the initial position to the operating position, the push block pushes the elastic element to undergo elastic deformation, and the restoring force of the elastic element pushes the rotating shell to return from the operating position to the initial position; the increase or decrease of the sensor output voltage is used to distinguish between extension and contraction, and the amplitude of the voltage increase or decrease can be used to convert the extension height.

2. The hand controller according to claim 1, characterized in that: The rotating shell has an initial position and an operating position, the operating position includes a first operating position and a second operating position, the direction in which the rotating shell rotates from the initial position to the first operating position is opposite to the direction in which the rotating shell rotates from the initial position to the second operating position, when the linear actuator rotates from the initial position to the first operating position, the linear actuator is in an extended state, and when the linear actuator rotates from the initial position to the second operating position, the linear actuator is in a contracted state.

3. The hand controller according to claim 2, characterized in that: When the rotating shell returns to the initial position from the first operating position, the linear actuator stops extending, and when the rotating shell returns to the initial position from the second operating position, the linear actuator stops contracting; or when the rotating shell returns to the initial position from the first operating position, the linear actuator stops contracting, and when the rotating shell returns to the initial position from the second operating position, the linear actuator stops extending.

4. The hand controller according to claim 1, characterized in that: The detection element is a Hall effect sensor. A magnet is provided in the hand controller. A changing magnetic field is generated on the surface of the magnet. The Hall effect sensor is within the magnetic field range of the magnet. One of the magnet and the Hall effect sensor is mounted on the inner wall of the rotating housing, and the other is fixed to the mounting seat.

5. The hand controller according to claim 1, characterized in that: The detection element is one of a rotation angle sensor, a rotary encoder, a variable resistor, and a photodetector.

6. The hand controller according to claim 1, characterized in that: The elastic element is a torsion spring, which includes a spiral body and a first torsion arm and a second torsion arm extending from the spiral body. A mounting column is provided at the center of the mounting seat. The push block includes a first push block and a second push block. The mounting column is inserted into the spiral body. The first torsion arm abuts against the first push block, and the second torsion arm abuts against the second push block. When the rotating shell rotates from the initial position to the operating position, one of the first torsion arm and the second torsion arm is pushed by the push block to undergo elastic deformation.

7. The hand controller according to claim 1, characterized in that: The elastic element includes a first spring and a second spring. The mounting seat is provided with a first mounting groove. The first spring and the second spring are mounted in the first mounting groove. The first spring and the second spring abut against the push block at the same time. When the rotating shell rotates from the initial position to the operating position, one of the first spring and the second spring is pushed by the push block to undergo elastic deformation.

8. The hand controller according to any one of claims 1 to 5, characterized in that: The hand controller further includes a display unit, which is electrically connected to the control unit. An external controller transmits height information of the linear actuator to the control unit, and the control unit displays the height information through the display unit.

9. A lifting platform, comprising a platform, an external controller and a linear actuator, characterized in that: The lifting platform also includes the hand controller described in one of claims 1 to 8, the hand controller is electrically or wirelessly connected to the external controller, the external controller is electrically connected to the linear actuator, the linear actuator is connected to the table, the hand controller rotates and transmits a signal to the external controller, the external controller drives the linear actuator according to the signal of the hand controller, and the linear actuator drives the table to move.

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