A variable speed control device, an electric lifting mechanism and an electric massage mechanism

Abstract

The present invention provides a variable speed control device, an electric lifting mechanism and an electric massage mechanism, which include an operation unit and a control unit. The control unit includes an information processing module, an operation detection module electrically connected to the operation unit, and a motor control module electrically connected to the motor. Both the operation detection module and the motor control module are electrically connected to the information processing module. The operation detection module detects the action variables on the operation unit and sends the detection results to the information processing module. The information processing module obtains the corresponding motor speed variables according to the detection results and sends the results to the motor control module. The motor control module changes the motor speed according to the motor speed variables, making the speed adjustment more intuitive, not limited to several speed gears, and can achieve stepless speed change. At the same time, there is no need to set a speed adjustment gear switch to occupy the control and detection ports, increasing the design sense of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of variable speed control, and particularly to a variable speed control device, an electric lifting mechanism and an electric massage mechanism. Background Art

[0002] Electric lifting mechanisms such as electric lifting tables, electric tatamis, electric sofas, and electric beds can be adjusted in height according to the usage requirements of different users, and are more comfortable to use. Therefore, they are increasingly applied to places such as offices, schools, families, and hospitals.

[0003] Existing electric lifting mechanisms can only operate the lifting of the electric platform at a fixed speed. The operation modes include long-press lifting, click lifting, one-key lifting, etc. As the application range of the lifting platform becomes wider and wider, different application scenarios have different requirements for speed. With the continuous improvement of technology and process, the lifting speed of the electric lifting platform has been increased from the original 10 - 40 mm / s to more than 100 mm / s. In the case of speed increase or when there is a need for rapid lifting, variable speed lifting operation can allow people to adapt to the excessive acceleration during startup before reaching the maximum speed through speed regulation, and can also achieve a stepless speed change feel, opening up the lifting performance and enabling the operator to make the most of the performance.

[0004] Most of the existing speed regulation technologies in other fields on the market currently achieve speed regulation by means of speed regulation gear switches, multi - gear toggle switches, or defining different buttons or different operations to correspond to different speeds. The operation is not intuitive enough. The limited setting of gears results in a limited number of speed change gears, and at the same time, it requires a large occupied area, which will occupy more control and detection ports, seriously affecting the design sense of the product. Summary of the Invention

[0005] The purpose of the present invention is to provide a variable speed control device, an electric lifting mechanism and an electric massage mechanism, which can achieve stepless speed regulation and the product has a better design sense.

[0006] To achieve the above - mentioned purpose, the present invention adopts the following technical solution: A variable speed control device includes an operation unit and a control unit. The control unit includes an information processing module, an operation detection module electrically connected to the operation unit, and a motor control module electrically connected to the motor. Both the operation detection module and the motor control module are electrically connected to the information processing module. The operation detection module detects the action variable on the operation unit and sends the detection result to the information processing module. The information processing module obtains the corresponding motor speed variable according to the detection result and sends the result to the motor control module. The motor control module changes the motor speed according to the motor speed variable.

[0007] Further, the operation unit includes a first housing and a paddle provided on the first housing. The operation detection module includes a pressure sensor located in the force-receiving area of the paddle and / or an angle sensor located on the follower surface of the paddle.

[0008] Further, the pressure sensor is a piezoelectric sensor; alternatively, the pressure sensor is a piezoresistive sensor; alternatively, the pressure sensor includes an elastic conductive member whose resistance value changes after deformation.

[0009] Further, the information processing module and the motor control module are integrated on a first signal processing board. The first signal processing board is located inside the first housing and is electrically connected to the pressure sensor.

[0010] Further, the operation unit includes a second housing and a first rotating housing provided on the second housing. The operation detection module includes a magnetic induction sensor and a magnet. The magnetic induction sensor is provided on the first rotating housing and can rotate with the first rotating housing, and the magnet is fixed inside the second housing; alternatively, the magnetic induction sensor is fixed inside the second housing, and the magnet is provided on the first rotating housing and can rotate with the first rotating housing.

[0011] Further, the operation unit includes a third housing and a second rotating housing provided on the third housing. The operation detection module includes a rotary encoder fixed inside the third housing; alternatively, the operation detection module includes an angle sensor fixed on the second rotating housing.

[0012] Further, the operation unit includes a fourth housing and a key provided on the fourth housing. The operation detection module includes a circuit board located inside the fourth housing. A conductive elastic member is provided between the key and the circuit board, and the conductive elastic member deforms when the key is pressed.

[0013] Further, the operation unit includes an air chamber. Pressing the air chamber can compress the space of the air chamber. The operation detection module includes a pressure sensor located inside the air chamber.

[0014] The present invention also discloses an electric lifting mechanism, including a lifting platform, a lifting execution unit, and a speed change control device. Among them, the speed change control device is the speed change control device in any of the above technical solutions. The lifting execution unit includes a motor and a lifting push rod. The motor is the motor in any of the above technical solutions. The speed change control device controls the motor speed to thereby change the telescopic speed of the lifting push rod.

[0015] The present invention also discloses an electric massage mechanism, including a vibration motor and a speed change control device. Among them, the speed change control device is the speed change control device in any of the above technical solutions. The vibration motor is the motor in any of the above technical solutions. The speed change control device controls the motor speed of the vibration motor to thereby change the vibration intensity and / or vibration frequency of the vibration motor.

[0016] After adopting the above technical solution, the present invention has the following advantages:

[0017] 1. By setting the operation control unit to detect the action variables on the operation unit, the speed of the motor is corresponding to the action variables on the operation unit, so that the speed adjustment is more intuitive and will not be limited to a few speed gears. Stepless speed regulation can be achieved and a variety of speed changes can be achieved. At the same time, there is no need to set a speed adjustment gear switch to occupy the control and detection ports, which increases the design sense of the product.

[0018] 2. By setting up a pressure sensor and / or an angle sensor, the pressure sensor measures the change in pressure in the force-bearing area of ​​the paddle, and the angle sensor measures the change in the paddle's turning angle. The corresponding motor speed variable is obtained through the information processing module, and the motor speed change is realized through the motor drive device. The motor speed change is realized by turning the paddle, making the control of the motor speed more intuitive.

[0019] 3. The pressure sensor can be a piezoelectric sensor or a piezoresistive sensor or an elastic conductive member that changes resistance after deformation. The speed gear can be judged by the change of current or resistance in the circuit.

[0020] 4. The position between the magnetic induction sensor and the magnet changes through the first rotating shell, and the rotation angle of the first rotating shell is determined by detecting the number of pulse signals, thereby determining the motor speed variable. The structure is simple and the measurement is accurate.

[0021] 5. Determine the rotation angle of the second rotating housing through a rotary encoder or an angle sensor, and then determine the motor speed variable.

[0022] 6. By pressing the button, the conductive elastic part between the button and the circuit board is deformed, and the area or thickness changes, resulting in a change in the resistance value. The motor speed variable is then determined through circuit detection and feedback on the circuit board.

[0023] 7. By pressing the air cavity, the space inside the air cavity changes, and the air pressure inside the air cavity changes, thereby determining the motor speed variable.

[0024] 8. The present invention also discloses an electric lifting mechanism, including a lifting platform, a lifting execution unit and a speed control device, wherein the speed control device is the speed control device in any of the above technical solutions, and the speed control device can adjust the rotation speed of the motor according to the action variables on the operating unit and then adjust the extension and retraction speed of the lifting push rod, so that the electric lifting mechanism can adjust the speed by operating the operating unit, and the speed adjustment is more intuitive, making the electric lifting mechanism more design-oriented.

[0025] 9. The present invention also discloses an electric massage mechanism, including a vibration motor and a speed change control device, where the speed change control device is the speed change control device in any of the above technical solutions, and the vibration motor is the motor in any of the above technical solutions. The speed change control device can adjust the rotation speed of the vibration motor according to the action variable on the operation unit, and then adjust the vibration intensity or vibration frequency of the vibration motor, making the vibration adjustment of the electric massage mechanism more intuitive and making the electric massage mechanism more design-sense. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the drawings:

[0027] Figure 1 It is a schematic structural diagram of the speed change control device according to Embodiment 1 of the present invention.

[0028] Figure 2 It is a cross-sectional view of the speed change control device according to Embodiment 1 of the present invention.

[0029] Figure 3 It is a partial enlarged view of the cross-sectional view of the speed change control device according to Embodiment 1 of the present invention.

[0030] Figure 4 It is a cross-sectional view of the speed change control device according to Embodiment 2 of the present invention.

[0031] Figure 5 It is a schematic structural diagram of the speed change control device according to Embodiment 3 of the present invention.

[0032] Figure 6 It is a cross-sectional view of the speed change control device according to Embodiment 3 of the present invention.

[0033] Figure 7 It is a cross-sectional view of the speed change control device according to Embodiment 4 of the present invention.

[0034] Figure 8 It is a cross-sectional view of the speed change control device according to Embodiment 5 of the present invention.

[0035] Figure 9 It is a partial enlarged view of the cross-sectional view of the speed change control device according to Embodiment 5 of the present invention.

[0036] The names of the components marked in the figure are as follows:

[0037] 110, First housing; 120, Paddle; 121, Touch switch; 130, Full-bridge strain gauge; 140, First signal processing board; 150, Conducting wire; 160, Elastic conductive member; 210, Second housing; 220, First rotating housing; 230, Hall sensor; 240, Ring magnet; 250, Second signal processing board; 310, Third housing; 320, Second rotating housing; 330, Rotary encoder; 340, Third signal processing board; 410, Fourth housing; 420, Button; 430, Circuit board; 440, Conductive rubber. Detailed implementation mode

[0038] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following words indicating the orientation or position relationship, such as "up", "down", "left", "right", "longitudinal", "transverse", "inner", "outer", "vertical", "horizontal", "top", "bottom", etc., are only based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0039] Embodiment 1:

[0040] The present invention provides a speed control device, including an operation unit and a control unit. The control unit includes an information processing module, an operation detection module, and a motor control module. The input end of the operation detection module is electrically connected to the operation unit, and the output end is electrically connected to the information processing module. The input end of the motor control module is electrically connected to the information processing module, and the output end is electrically connected to the motor. The operation detection module detects the action variable on the operation unit and sends the detection result to the information processing module. The information processing module obtains the corresponding motor speed variable according to the detection result and sends the result to the motor control module. The motor control module changes the motor speed according to the motor speed variable, making the speed adjustment more intuitive, not limited to several speed gears, and can realize various speed changes. At the same time, there is no need to set a speed adjustment gear switch to occupy the control and detection ports, increasing the design sense of the product.

[0041] As Figures 1 to 3As shown, in this embodiment, the operation unit includes a first shell 110 and a paddle 120 disposed on the first shell 110. The paddle 120 adopts a glass fiber cloth-based copper-clad plate. The glass fiber cloth-based copper-clad plate is solid and tough, can withstand long-term bending at a certain angle and can recover by itself; the operation detection module includes a pressure sensor, the pressure sensor is located in the force-bearing area of ​​the paddle 120, and the force-bearing area of ​​the paddle is generally located at the matching position with the first shell or the fixed position of the paddle. The pressure sensor measures the pressure change in the force-bearing area of ​​the paddle, and the information processing module obtains the corresponding motor speed variable according to the pressure change, and realizes the change of the motor speed through the motor control module. The change of the motor speed is realized by toggling the paddle 120, so that the control of the motor speed is more intuitive. The greater the force of toggling the paddle upward or downward, the greater the bending degree of the paddle, and the faster the corresponding speed. The pressure sensor is a piezoresistive sensor. In this embodiment, a full-bridge strain gauge 130 is used to obtain better temperature compensation and improve the measurement accuracy. The full-bridge strain gauge 130 is fixed on the paddle 120 by pasting. When the paddle 120 is bent upward or downward, the full-bridge strain gauge 130 produces changes in resistance due to different degrees of deformation. The subsequent circuit realizes the direction judgment and the amplification of the signal generated by the small deformation, and the motor speed variable is obtained through the corresponding relationship between the preset signal amplitude value and the speed.

[0042] The thickness of the pick 120 is 1 mm. The glass fiber cloth-based copper clad laminate has very excellent bending feel and bending deformation at a thickness of 1 mm, and can quickly return to its original state.

[0043] The information processing module and the motor control module are integrated on the first signal processing board 140. The first signal processing board 140 is located in the shell and is electrically connected to the pressure sensor, so that the operating unit and the control unit of the speed control device are integrated into one device. The motor control module is connected to the motor through a wire 150 to achieve control of the motor speed.

[0044] The control unit also includes a safety detection module. When the safety detection module does not detect the safety release action, it is determined to be an erroneous operation. The signal processing module does not process the detected data, which plays a role in preventing erroneous operation, making the use of the speed control device safer and more reliable.

[0045] In this embodiment, the safety detection module is a touch switch 121 on the paddle 120, and the safety release action is that the touch switch senses the touch and accumulates for a certain time. If the touch switch 121 does not accumulate for a certain time, the signal processing module does not process the detected data, and the paddle's tossing action is invalid, preventing the paddle from being misoperated, making the use of the speed control device safer and more reliable. Specifically, the touch switch 121 is a PCB touch pad.

[0046] The present invention also discloses an electric lifting mechanism, which includes a lifting platform, a lifting execution unit, and a speed change control device. The lifting execution unit drives the lifting platform to move up and down. The speed change control device is the speed change control device in any of the above technical solutions. The lifting execution unit includes a motor and a lifting push rod. The motor is the motor in any of the above technical solutions. The speed change control device can adjust the rotation speed of the motor according to the action variable on the operation unit, and then adjust the telescopic speed of the lifting push rod, so that the electric lifting mechanism can adjust the speed by operating the operation unit, and the speed adjustment is more intuitive, making the electric lifting mechanism more design-sense.

[0047] The present invention also discloses an electric massage mechanism, which includes a vibration motor and a speed change control device. The speed change control device is the speed change control device in any of the above technical solutions. The vibration motor is the motor in any of the above technical solutions. The speed change control device controls the rotation speed of the vibration motor to change the vibration intensity and vibration frequency of the vibration motor.

[0048] It can be understood that the paddle can also be made of paper-based copper clad laminate or metal-based copper clad laminate.

[0049] It can be understood that the operation detection module can also adopt angle sensors such as accelerometers and gyroscopes. The angle sensor is located on the follower surface of the paddle and senses the angle as the paddle is toggled up and down.

[0050] It can be understood that the operation detection module can also adopt a pressure sensor and an angle sensor at the same time. The pressure sensor is located in the force-bearing area of the paddle, and the angle sensor is located on the follower surface of the paddle.

[0051] It can be understood that the pressure sensor can also be a piezoelectric sensor such as a piezoelectric film material, a ring-shaped or circular piezoelectric sheet.

[0052] It can be understood that the pressure sensor can also be a piezoresistive sensor such as a single-bridge strain gauge or a half-bridge strain gauge.

[0053] It can be understood that the pressure sensor can also be fixed on the paddle by means of inlaying, tight fitting, adsorption, screws, etc.

[0054] It can be understood that the information processing module and the motor control module can also be set separately. The operation detection module is electrically connected to the signal processing module through a wire.

[0055] It can be understood that the safety detection module can also be a key switch.

[0056] It can be understood that the speed change control device can also control the rotation speed of the vibration motor to separately change the vibration intensity of the vibration motor.

[0057] It is understandable that the speed control device can also change the vibration frequency of the vibration motor alone by controlling the speed of the vibration motor.

[0058] Embodiment 2:

[0059] The main difference between this embodiment and the first embodiment is that the type of pressure sensor is different.

[0060] like Figure 4 As shown, the pressure sensor includes an elastic conductive member 160. The elastic conductive member 160 will change its resistance after deformation. When the paddle 120 is moved, the elastic conductive member 160 is squeezed and deformed. The greater the force of moving the paddle upward or downward, the greater the deformation of the elastic conductive member, and the faster the corresponding rotation speed. Specifically, the elastic conductive member is made of conductive rubber.

[0061] It can be understood that the elastic conductive member can also be a conductive sponge.

[0062] Embodiment three:

[0063] The main difference between this embodiment and the first and second embodiments is that the action variable on the operating unit is an angle variable.

[0064] like Figure 5 and Figure 6 As shown, the operating unit includes a second shell 210 and a first rotating shell 220 arranged on the second shell 210, and the operation detection module includes a magnetic induction sensor and a magnet. Specifically, the magnetic induction sensor adopts a Hall sensor 230, and the Hall sensor 230 is arranged on the first rotating shell 220 and can rotate with the first rotating shell 220. The magnet adopts an annular magnet 240, and the annular magnet 240 is fixed in the second shell 210. The first rotating shell 220 is rotated to change the position between the Hall sensor 230 and the annular magnet. The rotation angle of the first rotating shell 220 is determined by detecting the number of pulse signals, and then the motor speed variable is determined. The structure is simple and the measurement is accurate.

[0065] The information processing module and the motor control module are integrated on the second signal processing board 250, and the Hall sensor 230 is fixed on the second information processing board. It can be understood that the rotation angle of the first rotating housing can also be determined by detecting the amplitude of the output level of the Hall sensor.

[0066] It is understandable that the Hall sensor may also be fixed in the second housing, and the annular magnet may be fixed on the first rotating housing and may rotate with the rotating housing.

[0067] It can be understood that the information processing module and the motor control module can also be provided separately, and the operation detection module is electrically connected to the signal processing module via a wire.

[0068] It can be understood that the information processing module and the motor control module can also be set separately, and the operation detection module is wirelessly connected to the signal processing module.

[0069] Embodiment 4:

[0070] The main difference between this embodiment and Embodiment 3 lies in the different operation detection module.

[0071] As Figure 7 shown, the operation unit includes a third housing 310 and a second rotating housing 320 provided on the third housing 310. The operation detection module includes a rotary encoder 330. The rotary encoder 330 is fixed inside the third housing 310. By detecting the number of pulse signals of the rotary encoder 330, the rotation angle of the second rotating housing 320 is detected, and then the motor speed variable is determined.

[0072] The information processing module and the motor control module are integrated on the third signal processing board 340, and the rotary encoder 330 is also fixed on the third signal processing board 340.

[0073] It can be understood that the operation detection module can also be a rotation angle sensor, and the rotation angle sensor is fixed on the second rotating housing.

[0074] It can be understood that the operation detection module can also be a grating type sensor. In this application, the second rotating housing generally includes a bearing.

[0075] It can be understood that the information processing module and the motor control module can also be set separately, and the operation detection module is electrically connected to the signal processing module through a wire.

[0076] It can be understood that the information processing module and the motor control module can also be set separately, and the operation detection module is wirelessly connected to the signal processing module.

[0077] Embodiment 5:

[0078] The main difference between this embodiment and the above embodiments lies in that the action variable on the operation unit is a resistance variable.

[0079] As Figure 8 and Figure 9 shown, the operation unit includes a fourth housing 410 and a key 420 provided on the fourth housing 410. The operation detection module includes a circuit board 430. The circuit board 430 is located inside the fourth housing 410. A conductive elastic member is provided between the key 420 and the circuit board 430. When the key 420 is pressed, the conductive elastic member will deform, and the change in the area or thickness of the conductive elastic member causes a change in the resistance value, and through the detection and feedback of the circuit on the circuit board 430, the motor speed variable is determined.

[0080] In this embodiment, the conductive elastic member is a conductive rubber 440, and the conductive rubber 440 will deform when the push button 420 is pressed.

[0081] It can be understood that the conductive elastic member can also be a conductive sponge.

[0082] Embodiment Six:

[0083] The main difference between this embodiment and the above embodiments is that the action variable on the operation unit is a pneumatic variable.

[0084] The operation unit includes an air chamber. Pressing the air chamber can compress the space of the air chamber, and the air pressure inside the air chamber changes. The operation detection module includes a pressure sensor located inside the air chamber. By detecting the pneumatic variable inside the air chamber, the motor speed variable can be determined. When the air chamber is not under force, it will automatically return to its initial position.

[0085] Embodiment Seven:

[0086] The main difference between this embodiment and the above embodiments is that the action variable on the operation unit is the touch length.

[0087] The operation unit includes a touch slider, and the operation detection module includes a touch sensor. By detecting the length variable of the touch across the touch slider, the motor speed variable can be determined.

[0088] It can be understood that the touch slider can also be a slip ring.

[0089] In addition to the above preferred embodiments, the present invention has other implementation manners. Those skilled in the art can make various changes and deformations according to the present invention. As long as they do not depart from the spirit of the present invention, they shall fall within the scope defined by the appended claims of the present invention.

Claims

1. A variable speed control device, comprising an operation unit and a control unit, characterized in that, The control unit includes an information processing module, an operation detection module electrically connected to the operation unit, and a motor control module electrically connected to the motor. The operation detection module and the motor control module are both electrically connected to the information processing module. The operation detection module detects the action variables on the operation unit and sends the detection results to the information processing module. The information processing module obtains the corresponding motor speed variables according to the detection results and sends the results to the motor control module. The motor control module changes the motor speed according to the motor speed variables to achieve stepless speed regulation; The operation unit includes a first housing and a paddle provided on the first housing. The operation detection module includes a pressure sensor located in the force-receiving area of the paddle and / or an angle sensor located on the follower surface of the paddle; Alternatively, the operation unit includes a fourth housing and a button provided on the fourth housing. The operation detection module includes a circuit board located inside the fourth housing. There is a conductive elastic member between the button and the circuit board, and the conductive elastic member will deform when the button is pressed; Alternatively, the operation unit includes an air chamber. Pressing the air chamber can compress the air chamber space. The operation detection module includes a pressure sensor located inside the air chamber.

2. The variable speed control device according to claim 1, wherein The pressure sensor is a piezoelectric sensor; alternatively, the pressure sensor is a piezoresistive sensor; alternatively, the pressure sensor includes an elastic conductive member whose resistance value changes after deformation.

3. The variable speed control device according to claim 1, wherein The information processing module and the motor control module are integrated on a first signal processing board. The first signal processing board is located inside the first housing and is electrically connected to the pressure sensor.

4. A variable speed control device, comprising an operation unit and a control unit, characterized in that, The control unit includes an information processing module, an operation detection module electrically connected to the operation unit, and a motor control module electrically connected to the motor. The operation detection module and the motor control module are both electrically connected to the information processing module. The operation detection module detects the action variables on the operation unit and sends the detection results to the information processing module. The information processing module obtains the corresponding motor speed variables according to the detection results and sends the results to the motor control module. The motor control module changes the motor speed according to the motor speed variables to achieve stepless speed regulation; The operation unit includes a second housing and a first rotating outer shell provided on the second housing. The operation detection module includes a magnetic induction sensor and a magnet. The magnetic induction sensor is provided on the first rotating outer shell and can rotate with the first rotating outer shell, and the magnet is fixed inside the second housing; alternatively, the magnetic induction sensor is fixed inside the second housing, and the magnet is provided on the first rotating outer shell and can rotate with the first rotating outer shell; Alternatively, the operation unit includes a third housing and a second rotating outer shell provided on the third housing. The operation detection module includes a rotary encoder fixed inside the third housing; alternatively, the operation detection module includes an angle sensor fixed on the second rotating outer shell.

5. An electric lifting mechanism, comprising a lifting platform, a lifting execution unit and a speed change control device, characterized in that, The speed change control device is the speed change control device according to any one of claims 1 to 4. The lifting execution unit includes a motor and a lifting push rod. The motor is the motor according to any one of claims 1 to 4. The speed change control device controls the motor speed and thus changes the telescopic speed of the lifting push rod.

6. An electric massage mechanism, comprising a vibration motor and a speed change control device, characterized in that, The variable speed control device is the variable speed control device described in any one of claims 1 to 4, and the vibration motor is the motor described in any one of claims 1 to 4. The variable speed control device controls the rotational speed of the vibration motor to thereby change the vibration intensity and / or vibration frequency of the vibration motor.

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