A smart knob with bearings

Abstract

This utility model discloses a smart knob with a bearing, including a base, a knob outer ring, an annular rotating component, an inner support component, a pinion, a bearing, and a PCBA circuit board. The base has a bearing mounting position and a pinion mounting position. The bearing is mounted outside the bearing mounting position, and the pinion is rotatably mounted on the pinion mounting position. The lower end of the annular rotating component is mounted outside the bearing, and the outer side of the annular rotating component is connected to the inner side of the knob outer ring. A large gear is located on the inner side of the upper end of the annular rotating component, and the pinion meshes with the large gear. A permanent magnet is installed inside the upper end of the pinion. The inner support component is connected to the base, located above the annular rotating component, and the annular rotating component can rotate below the inner support component. The PCBA circuit board is mounted on the inner support component and has a magnetic induction chip that magnetically inducts with the permanent magnet. This utility model exhibits good rotational smoothness.

Description

Technical Field

[0001] This utility model relates to the field of potentiometer technology, and in particular to an intelligent knob with a bearing. Background Technology

[0002] A rotary switch is a manual component that is controlled by hand. It can be rotated continuously or in a fixed position depending on the function required. Many household appliances on the market are equipped with rotary switches, such as gas stoves, water heaters, microwave ovens, and induction cookers. A smart rotary switch, on the other hand, is a rotary switch with a display and function switching capabilities. Replacing the ordinary rotary switch on a traditional stove with a smart rotary switch allows the switch status and function of the knob to be displayed on the screen, enabling users to intelligently control the operation of the appliance.

[0003] See Chinese Patent 202410117631.5, filed by the applicant on January 29, 2024, which discloses an intelligent knob, including a base shell, a rotating component, an inner support component, a pinion, a PCBA circuit board, a display module, and a knob outer ring; the upper side of the base shell has an annular cavity and a pinion mounting position; the rotating component includes a large gear and a knob support ring, the large gear being rotatably housed within the annular cavity; the inner support component is disposed on the upper side of the rotating component, and the rotating component can rotate on the lower side of the inner support component, the inner support component being connected to the base shell; the pinion is mounted on the pinion mounting position, the pinion meshes with the large gear, and the pinion is equipped with a permanent magnet; the PCBA circuit board is mounted on the inner support component, the PCBA circuit board is equipped with a magnetic induction chip, the magnetic induction chip and the permanent magnet are magnetically inductively coupled; the lower end of the knob outer ring is connected to the knob support ring of the rotating component. This patented design involves rotating the outer ring of the knob. The outer ring drives a rotating component, which in turn drives a smaller gear, which in turn drives a permanent magnet. Finally, a magnetic induction chip senses the magnet's rotation and outputs an electrical signal. Simultaneously, the display screen shows various functions and data. However, this bearing-equipped smart knob has the following technical problems: the rotating component is mounted on the base shell, and the outer ring is connected to the rotating component's support ring. Therefore, the weight of the outer ring presses down on the rotating component, resulting in significant friction between the component and the base shell, and insufficient smoothness of rotation. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a smart knob with bearing that has good rotation smoothness, in order to overcome the shortcomings of the above-mentioned prior art.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: a smart knob with a bearing, comprising a base, a knob outer ring, an annular rotating component, an inner support component, a pinion, a bearing, and a PCBA circuit board; the base is provided with a bearing mounting position and a pinion mounting position, the bearing is mounted outside the bearing mounting position, and the pinion is rotatably mounted on the pinion mounting position; the lower end of the annular rotating component is mounted outside the bearing, the outer side of the annular rotating component is connected to the inner side of the knob outer ring, a large gear is provided on the inner side of the upper end of the annular rotating component, the pinion meshes with the large gear, and a permanent magnet is installed inside the upper end of the pinion; the inner support component is connected to the base, the inner support component is located on the upper side of the annular rotating component, and the annular rotating component can rotate on the lower side of the inner support component; the PCBA circuit board is mounted on the inner support component, and the PCBA circuit board is provided with a magnetic induction chip, which magnetically inductionally cooperates with the permanent magnet.

[0006] In the above technical solution, the smart knob further includes a display screen and a glass cover. The display screen is mounted on the inner support member, and the glass cover is mounted on the display screen. The outer ring of the knob is rotatably fitted over the display screen and the glass cover. The inner support member has a circuit board mounting cavity, and the PCBA circuit board is fixedly mounted within the circuit board mounting cavity. A support ring is provided on the upper side of the inner support member, and the glass cover is mounted on the support ring. An FPC cable connects the display screen and the PCBA circuit board.

[0007] In the above technical solution, the large gear of the annular rotating component is an internal gear, the bearing mounting position is annular in shape, the small gear mounting position is located inside the bearing mounting position, a shaft hole is provided above the small gear mounting position, a gear shaft is provided at the lower end of the small gear, and the gear shaft is rotatably installed in the shaft hole; a cylindrical body is provided at the upper end of the small gear, the permanent magnet is installed inside the cylindrical body, the inner support component is provided with a cylindrical body through hole, the cylindrical body is rotatably inserted into the cylindrical body through hole, and the position of the cylindrical body through hole corresponds to that of the magnetic induction chip.

[0008] In the above technical solution, a first positioning ring is provided on the inner side of the lower end of the outer ring of the knob, and a second positioning ring is provided on the inner side of the middle end of the outer ring of the knob. The annular rotating component is fitted between the first positioning ring and the second positioning ring. Several elastic blocks are provided on the outer side of the annular rotating component, and the elastic blocks are fitted on the upper side of the first positioning ring.

[0009] In the above technical solution, the outer edge of the upper end of the annular rotating component is provided with an upwardly protruding ring, and a ring of wave teeth is provided at equal intervals on the inner side of the ring. The outer edge of the PCBA circuit board is provided with two elastic actuating blocks, and the side of the inner support component is provided with a clearance groove for the elastic actuating blocks to extend out. The wave teeth are elastically actuated in cooperation with the elastic actuating blocks.

[0010] In the above technical solution, the intelligent knob further includes a fixing component and a spring; the base has a central hole in its middle, and the fixing component is movably inserted into the central hole, with the height of the fixing component being greater than the height of the central hole, allowing the base to rise or fall outside the fixing component; the inner support component has a central hole corresponding vertically to the central hole in the base, and the lower end of the PCBA circuit board has a function button, which passes through the central hole of the support component and presses against the fixing component; the spring passes through the central hole of the support component and is positioned between the fixing component and the PCBA circuit board. The lower end of the fixing component has several connecting holes for fixing the fixing component to an external mechanism; the fixing component has a wire-passing hole for passing through the ribbon cable connecting the PCBA circuit board; the upper center of the fixing component has a circular cavity, the bottom of which presses against the function button, the upper end of the spring is sleeved outside the function button, and the lower end of the spring is installed inside the circular cavity.

[0011] The beneficial effects of this utility model are as follows: This utility model uses a permanent magnet and a magnetic induction chip on the PCBA circuit board to achieve the output of electrical signals through magnetic induction. There is no contact or wear between the magnetic induction chip and the permanent magnet, and the service life is long. Because the base is provided with a bearing mounting position, and the bearing is installed outside the bearing mounting position, the lower end of the annular rotating part is installed outside the bearing. The outer side of the annular rotating part is connected to the inner side of the outer ring of the knob. Therefore, under the action of the bearing, the annular rotating part can rotate smoothly on the base, which makes the rotation of the outer ring of the knob very smooth. Attached Figure Description

[0012] Figure 1 This is a first-person view schematic diagram of the overall structure of a smart knob with bearings.

[0013] Figure 2 This is a second-view schematic diagram of the overall structure of a smart knob with bearings.

[0014] Figure 3 This is a longitudinal sectional view of a smart knob with a bearing.

[0015] Figure 4 This is a first-person perspective schematic diagram of the structure of a smart knob with bearings.

[0016] Figure 5 This is a schematic diagram of the second-view dispersion structure of a smart knob with bearings. Detailed Implementation

[0017] The structural and working principles of this utility model will be further described in detail below with reference to the accompanying drawings.

[0018] like Figures 1-5As shown, this utility model is an intelligent knob with a bearing, including a base 1, a knob outer ring 2, an annular rotating component 3, an inner support component 4, a pinion 5, a bearing 6, and a PCBA circuit board 7. The base 1 has a bearing mounting position 11 and a pinion mounting position 12. The bearing 6 is mounted outside the bearing mounting position 11, and the pinion 5 is rotatably mounted on the pinion mounting position 12. The lower end of the annular rotating component 3 is mounted outside the bearing 6, and the outer side of the annular rotating component 3 is connected to the inner side of the knob outer ring 2. A large gear 31 is provided on the inner side of the upper end of the annular rotating component 3, and the pinion 5 meshes with the large gear 31. A permanent magnet 8 is installed inside the upper end of the pinion 5. The inner support component 4 is connected to the base 1, located above the annular rotating component 3, and the annular rotating component 3 can rotate below the inner support component 4. The PCBA circuit board 7 is mounted on the inner support component 4 and has a magnetic induction chip 71, which magnetically inducts with the permanent magnet 8. This invention employs a permanent magnet 8 and a magnetic induction chip 71 on the PCBA circuit board 7 to achieve the output of an electrical signal through magnetic induction. The magnetic induction chip 71 and the permanent magnet 8 are non-contact, wear-free, and have a long service life. In this invention, a bearing mounting position 11 is provided on the base 1, and the bearing 6 is installed outside the bearing mounting position 11. The lower end of the annular rotating part 3 is installed outside the bearing 6, and the outer side of the annular rotating part 3 is connected to the inner side of the outer ring 2 of the knob. Therefore, under the action of the bearing 6, the annular rotating part 3 can rotate smoothly on the base 1, thereby making the rotation of the outer ring 2 of the knob very smooth.

[0019] like Figure 1 , Figures 3-5 As shown, the smart knob also includes a display screen 9 and a glass cover plate 10. The display screen 9 is mounted on the inner support member 4, and the glass cover plate 10 is mounted on the display screen 9. The outer ring 2 of the knob is rotatably fitted onto the display screen 9 and the glass cover plate 10. Because the display screen 9 is mounted on the inner support member 4 and the glass cover plate 10 is mounted on the display screen 9, this invention eliminates the display screen support member found in the prior art, simplifying the overall structure of the smart knob and improving its assembly convenience. The inner support member 4 has a circuit board mounting cavity 41 inside, and the PCBA circuit board 7 is fixedly mounted inside the circuit board mounting cavity 41. The upper side of the inner support member 4 has a support ring 42, and the glass cover plate 10 is mounted on the support ring 42. An FPC cable connects the display screen 9 and the PCBA circuit board 7.

[0020] like Figures 3-5As shown, the large gear 31 of the annular rotating member 3 is an internal gear. The bearing mounting position 11 is annular in shape. The small gear mounting position 12 is located inside the bearing mounting position 11. A shaft hole 121 is provided on the small gear mounting position 12. A gear shaft 51 is provided at the lower end of the small gear 5, and the gear shaft 51 is rotatably installed in the shaft hole 121. A cylindrical body 52 is provided at the upper end of the small gear 5. The permanent magnet 8 is installed inside the cylindrical body 52. ​​The inner support member 4 is provided with a cylindrical body through hole 43. The cylindrical body 52 is rotatably inserted into the cylindrical body through hole 43. The position of the cylindrical body through hole 43 corresponds to that of the magnetic induction chip 71. The magnetic induction chip 71 is preferably a Hall chip.

[0021] like Figures 3-5 As shown, a first positioning ring 21 is provided on the inner side of the lower end of the outer ring 2 of the knob, and a second positioning ring 22 is provided on the inner side of the middle end of the outer ring 2 of the knob. The annular rotating part 3 is fitted between the first positioning ring 21 and the second positioning ring 22. Several elastic blocks 32 are provided on the outer side of the annular rotating part 3, and the elastic blocks 32 are fitted on the upper side of the first positioning ring 21.

[0022] like Figures 3-5 As shown, the outer edge of the upper end of the annular rotating component 3 is provided with an upwardly protruding ring 32. A ring of wave-shaped teeth 33 is evenly spaced on the inner side of the ring 32. Two elastic actuating blocks 72 are provided on the outer edge of the PCBA circuit board 7. The side of the inner support component 4 is provided with a clearance groove 44 for the elastic actuating blocks 72 to extend. The wave-shaped teeth 33 and the elastic actuating blocks 72 are elastically engaged. When a person rotates the knob, a slight force is applied to the outer ring 2, and the elastic actuating blocks 72 slide sequentially over each wave-shaped tooth 33 on the inner side of the ring 32. At this time, the person can feel the elastic actuating blocks 72 sliding over each wave-shaped tooth 33, providing a very good tactile experience. When the person stops rotating, the elastic actuating blocks 72 will remain between two adjacent wave-shaped teeth 33.

[0023] like Figures 3-5As shown, the smart knob also includes a fixing member 13 and a spring 14; the base 1 has a base hole 15 in the middle, the fixing member 13 is movably inserted into the base hole 15, and the height of the fixing member 13 is greater than the height of the base hole 15, so that the base 1 can rise or fall outside the fixing member 13; the inner support member 4 has a support hole 45, the support hole 45 corresponds vertically to the base hole 15, the lower end of the PCBA circuit board 7 has a function button 74, the function button 74 passes through the support hole 45 and is pressed and engaged with the fixing member 13, and the spring 14 passes through the support hole 45 and is disposed between the fixing member 13 and the PCBA circuit board 7. The lower end of the fixing component 13 is fixed to the mechanism of appliances such as gas stoves, water heaters, microwave ovens, and induction cookers. When a person presses the glass cover of the smart knob, all components except the fixing component 13 will descend as a whole, and the upper end of the fixing component will press the function button 74. When a person releases the pressure on the glass cover of the smart knob, all components except the fixing component will rise as a whole under the elastic action of the spring, and the upper end of the fixing component will release the pressure on the function button 74. The smart knob has multiple functions, such as power, speed, time, etc., which can be switched or confirmed by pressing the function button, and the values ​​or controls can be adjusted by rotating the ring-shaped rotating component.

[0024] like Figures 3-5 As shown, the lower end of the fixing member 13 is provided with several connecting holes 131, which are used to fix the fixing member 13 to an external mechanism; the fixing member 13 is provided with a wire through hole 132, which is used to pass through the ribbon cable 73 connecting the PCBA circuit board 7; the upper end of the fixing member 13 is provided with a circular cavity 133, the bottom of the circular cavity 133 is pressed and engaged with the function button 74, the upper end of the spring 14 is sleeved outside the function button 74, and the lower end of the spring 14 is installed inside the circular cavity 133.

[0025] The above description is merely a preferred embodiment of this utility model. Any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical solution of this utility model shall fall within the scope of the technical solution of this utility model.

Claims

1. A smart knob with a bearing, characterized in that: The device includes a base, an outer ring of a knob, a ring-shaped rotating component, an inner support component, a pinion, a bearing, and a PCBA circuit board. The base has a bearing mounting position and a pinion mounting position. The bearing is mounted outside the bearing mounting position, and the pinion is rotatably mounted on the pinion mounting position. The lower end of the ring-shaped rotating component is mounted outside the bearing, and the outer side of the ring-shaped rotating component is connected to the inner side of the outer ring of the knob. A large gear is located on the inner side of the upper end of the ring-shaped rotating component, and the pinion meshes with the large gear. A permanent magnet is installed inside the upper end of the pinion. The inner support component is connected to the base, located above the ring-shaped rotating component, and the ring-shaped rotating component can rotate below the inner support component. The PCBA circuit board is mounted on the inner support component and has a magnetic induction chip that magnetically inducts with the permanent magnet.

2. The smart knob with bearing of claim 1, wherein: The smart knob also includes a display screen and a glass cover. The display screen is mounted on the inner support, the glass cover is mounted on the display screen, and the outer ring of the knob is rotatably fitted onto the display screen and the glass cover.

3. The smart knob with bearing of claim 2, wherein: The inner support member has a circuit board mounting cavity inside, and the PCBA circuit board is fixedly installed inside the circuit board mounting cavity; the upper side of the inner support member has a support ring, the glass cover is installed on the support ring, and the display screen is connected to the PCBA circuit board by an FPC cable.

4. The smart knob with bearing of claim 1, wherein: The large gear of the annular rotating component is an internal gear. The bearing mounting position is annular in shape. The small gear mounting position is located inside the bearing mounting position. A shaft hole is provided above the small gear mounting position. A gear shaft is provided at the lower end of the small gear. The gear shaft is rotatably installed in the shaft hole. A cylindrical body is provided at the upper end of the small gear. The permanent magnet is installed inside the cylindrical body. The inner support component has a through hole in the cylindrical body. The cylindrical body is rotatably inserted into the through hole in the cylindrical body. The through hole in the cylindrical body corresponds to the position of the magnetic induction chip.

5. The smart knob with bearing of claim 1, wherein: The lower inner side of the outer ring of the knob is provided with a first positioning ring, and the middle inner side of the outer ring of the knob is provided with a second positioning ring. The annular rotating component is fitted between the first positioning ring and the second positioning ring. The outer side of the annular rotating component is provided with a number of elastic blocks, and the elastic blocks are fitted on the upper side of the first positioning ring.

6. The smart knob with bearing of claim 1, wherein: The upper outer edge of the annular rotating component is provided with an upwardly protruding ring, and the inner side of the protruding ring is provided with a ring of wave teeth at equal intervals. The outer edge of the PCBA circuit board is provided with two elastic actuating blocks, and the side of the inner support component is provided with a clearance groove for the elastic actuating blocks to extend. The wave teeth are elastically actuated in conjunction with the elastic actuating blocks.

7. The smart knob with bearing of claim 1, wherein: The smart knob also includes a fixing component and a spring; the base has a central hole in the middle, the fixing component is movably inserted into the central hole in the base, and the height of the fixing component is greater than the height of the central hole in the base, so that the base can rise or fall outside the fixing component; the inner support component has a central hole in the support component, which corresponds vertically to the central hole in the base; the lower end of the PCBA circuit board has a function button, which passes through the central hole in the support component and presses against the fixing component; the spring passes through the central hole in the support component and is located between the fixing component and the PCBA circuit board.

8. The intelligent knob with bearing according to claim 7, characterized in that: The lower end of the fastener has several connecting holes for fixing the fastener to an external mechanism; the fastener has wire-passing holes for passing through ribbon cables connecting to the PCBA circuit board; the upper middle part of the fastener has a circular cavity, the bottom of which is pressed and engaged with a function button; the upper end of the spring is sleeved outside the function button, and the lower end of the spring is installed inside the circular cavity.

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