Non-contact sensing knob controller structure

Abstract

The utility model discloses a non-contact sensing knob controller structure, which comprises a base, a fixed seat, a rotary sleeve button, a bearing and a main control board, the base is connected with the fixed seat in an embedded manner, the main control board is fixedly arranged on the fixed seat, the bearing is arranged below the fixed seat, and the rotary sleeve button is sleeved with an outer ring of the bearing; a wave structure is arranged on the inner wall face of the rotary sleeve button in the circumferential direction, at least one induction grating is arranged on the wave structure, and an infrared sensor is arranged on the cylindrical face of the fixing base. When the rotating sleeve button rotates, the sensing gratings on the wave structure regularly interrupt signals of the transmitting end of the infrared sensor, and the rotating angle of the rotating sleeve button is detected according to the number of the sensing gratings. According to the utility model, through cooperation between the infrared sensor and the induction grating, detection of the rotation angle and the number of turns of the knob switch is realized, the service life of a product is prolonged, the cost control is lower, and the adjustment amplitude of the knob can be controlled according to the detection rate of the infrared sensor.

Description

Technical Field

[0001] This utility model relates to the field of knob control technology, and in particular to a non-contact sensing knob controller structure. Background Technology

[0002] A rotary switch is a switch that enables multi-level and multi-stage parameter adjustment of electronic products. It can be connected to electronic products wirelessly to remotely control, for example, the volume of a speaker, the brightness of a light fixture, or to control the function changes of electronic products. Based on its convenience and practicality, it can be extended to different fields such as car systems and home appliances.

[0003] In the existing technology, the rotary controller with metal contact is commonly used to detect the rotation angle and number of revolutions. This structure has poor waterproof and dustproof performance, and the metal contacts are prone to wear during use, resulting in a short service life. Therefore, there is an urgent need for a more reasonable rotary controller structure to solve the above-mentioned technical problems. Utility Model Content

[0004] In view of the shortcomings of the existing knob controller structure in the above-mentioned technology, which is prone to wear and tear and thus has a short service life, this utility model provides a non-contact sensing knob controller structure.

[0005] To achieve the above objectives, this utility model provides a non-contact sensing knob controller structure, including a base, a fixed base, a rotary knob, a bearing, and a main control board. The base is fitted and connected to the fixed base, the main control board is fixedly mounted on the fixed base, the bearing is located below the fixed base, and the rotary knob is sleeved on the outer ring of the bearing. The inner wall surface of the rotary knob is provided with at least one sensing grating, and the cylindrical surface of the fixed base is provided with at least one infrared sensor opposite to any of the sensing gratings. When the rotary knob rotates, the sensing grating interrupts the signal emitted by the infrared sensor, and the rotation angle of the rotary knob is detected according to the number of sensing gratings.

[0006] As an improvement of this utility model, the inner wall surface of the rotating sleeve is provided with a wave structure in the circumferential direction. The wave structure includes convex and concave portions. The number of the sensing gratings is adapted to the number of the concave portions, and the position of any sensing grating corresponds to any concave portion.

[0007] As an improvement of this utility model, the infrared sensor includes two sensors, and the rotation direction of the rotating knob is determined according to the signal detection sequence of the two infrared sensors.

[0008] As an improvement of this utility model, a battery compartment is formed on the base, and the two ends of the inner ring of the bearing abut against the fixed seat and the battery compartment respectively. The battery compartment is provided with a connecting slot and a connecting through hole. A connecting post is formed on the side of the fixed seat opposite to the base, which fits into the connecting slot. A threaded post is provided on the partition bracket, and an external bolt passes through the connecting through hole and the threaded post for threaded connection, so that the fixed seat and the battery compartment squeeze the inner ring of the bearing.

[0009] As an improvement of this utility model, the cylindrical surface of the partition bracket is provided with a spring hole that is opposite to the wave structure. A telescopic spring and a top ball are provided in the spring hole. The two ends of the telescopic spring are fixedly connected to the end face of the spring hole and the top ball, respectively, and the top ball protrudes out of the spring hole.

[0010] As an improvement of this utility model, the rotary knob, bearing and knob housing are connected by epoxy resin bonding.

[0011] As an improvement of this utility model, the base is provided with a battery, a power switch and a charging interface, and the battery, the power switch and the charging interface are electrically connected to the main control board.

[0012] As an improvement of this utility model, a knob shell is also provided outside the rotary knob. The surface of the rotary shell can be sprayed or pasted with any color or image pattern, and the knob shell can be made into any shape.

[0013] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model provides a non-contact sensing knob controller structure, including a base, a fixed base, a rotary knob, a bearing, and a main control board. The base and the fixed base are fitted together, the main control board is fixedly mounted on the fixed base, the bearing is located below the fixed base, and the rotary knob is fitted onto the outer ring of the bearing. The inner wall surface of the rotary knob has a circumferential wave structure, and at least one sensing grating is provided on the wave structure. An infrared sensor is provided on the cylindrical surface of the fixed base. When the rotary knob rotates, the sensing grating on the wave structure reflects the signal emitted by the infrared sensor. The rotation angle of the rotary knob is detected according to the number of sensing gratings. This utility model realizes the detection of the rotation angle and number of turns of the knob switch through the cooperation between the infrared sensor and the sensing grating, and also achieves a lower price in terms of cost control. Furthermore, the adjustment range of the knob can be controlled according to the detection rate of the infrared sensor. The non-contact sensing knob of this utility model adopts dual infrared sensor technology and has stronger waterproof and dustproof performance. During use, there is no contact friction with the rotating parts, which greatly increases the service life of the knob product. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present utility model;

[0015] Figure 2 This is an exploded view of the present invention;

[0016] Figure 3 This is a cross-sectional view of the present invention;

[0017] Figure 4 This is an exploded view of the present invention;

[0018] The symbols for the main components are explained below:

[0019] 1. Base; 2. Rotary knob; 21. Wave structure; 211. Protrusion; 212. Recess; 3. Bearing; 4. Fixing base; 41. Infrared sensor; 5. Knob housing; 6. Main control board; 7. Sensor grating; 8. Control panel; 9. Battery; 10. Charging interface; 11. Power switch; 12. Capacitor diaphragm; 13. Divider bracket; 131. Spring hole; 132. First through hole; 14. Telescopic spring; 15. Top ball. Detailed Implementation

[0020] To more clearly illustrate this utility model, the following description, in conjunction with the accompanying drawings, will provide a further picture.

[0021] In the following description, examples and details are given to provide a more in-depth understanding of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. It should be understood that the specific embodiments are only used to explain the present invention and are not intended to limit the present invention.

[0022] It should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of a feature, whole, step, operation, element, or component, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, or combinations thereof.

[0023] Please see Figure 1This utility model discloses a non-contact sensing knob controller structure, comprising a base 1, a fixed base 4, a rotating knob 2, a bearing 3, and a main control board 6. The base 1 is fitted and connected to the fixed base 4, the main control board 6 is fixedly mounted on the fixed base 4, the bearing 3 is located below the fixed base 4, and the rotating knob 2 is sleeved on the outer ring of the bearing 3. At least one sensing grating 7 is provided on the inner wall surface of the rotating knob 2, and at least one infrared sensor 41 is provided on the cylindrical surface of the fixed base 4, positioned opposite any of the sensing gratings 7. When the rotating knob 2 rotates, the sensing grating 7 reflects the signal emitted by the infrared sensor 41, and the rotation angle of the rotating knob 2 is detected based on the number of sensing gratings 7. This utility model, through the cooperation between the infrared sensor 41 and the sensing grating 7, realizes the detection of the rotation angle and number of rotations of the knob switch. Each time the sensing grating 7 passes the infrared sensor 41... The infrared signal emitted by the transmitting end of the infrared sensor 41 will be blocked by the sensing grating 7. After the sensing grating 7 passes, the receiving end of the infrared sensor 41 can receive the infrared signal normally again. Therefore, by regularly blocking the signal of the infrared sensor 41 through the sensing grating 7, the rotation angle and number of turns can be calculated based on the number of sensing gratings 7 set on the inner wall of the rotating knob. That is to say, the more sensing gratings 7 there are, the higher the measurement accuracy is, and vice versa. At the same time, the cost is also lowered. Since there is no contact or friction between the infrared sensor and the sensing grating, the product's service life is guaranteed to be longer. The adjustment range of the knob can also be controlled according to the detection rate of the infrared sensor 41. For example, the volume adjustment range of electronic products can be changed from adjusting the volume by one step up or down for each grating signal detected to adjusting the volume by five steps up or down.

[0024] The working principle of this utility model is as follows:

[0025] When the rotating knob 2 is rotated, the wave structure 21 on the rotating knob 2 passes the infrared sensor 41 on the fixed base 4. The sensing grating 7 in the recess 212 of the wave structure 21 reflects the detection signal emitted by the infrared sensor 41. Therefore, whenever the protrusion 211 of the wave structure 21 passes the infrared sensor 41, the infrared sensor 41 does not receive the emitted signal, which is equivalent to rotating by a corresponding angle. When the recess 212 passes the infrared sensor 41, the infrared sensor 41 receives the reflected signal, which is equivalent to rotating by an angle. This alternating detection allows the main control board 6 to determine the angle of rotation of the rotating knob 2 based on the number of signal receptions by the infrared sensor 41. The rotation direction is determined by the degree and number of rotations. To determine whether the rotation is clockwise or counterclockwise, two infrared sensors 41 are used, and they are arranged adjacent to each other. The rotation direction is determined by the signal detection sequence of the two infrared sensors 41. The telescopic spring 14 and the top ball 15 provided on the partition bracket 13 can form a linkage with the protrusion 211 and the concave part 212 of the wave structure 21 when the rotating sleeve 2 is rotated. When the rotating sleeve 2 is rotated, the top ball 15 continuously collides with the protrusion 211, producing a friction clicking sound. When the rotation stops, the top ball 15 engages with the concave part 212, and the telescopic spring 14 pushes the top ball 15 out completely, so that the top ball 15 is stuck in the concave part 212 and remains fixed.

[0026] In this embodiment, a knob housing 5 is also fitted over the rotating knob 2. The rotating knob 2 is fixedly connected to the knob housing 5. The inner ring of the bearing 3 abuts against the fixed seat 4, and the outer ring of the bearing 3 abuts against the base 1. By pressing the fixed seat 4 and the base 1 against the inner ring of the bearing 3, the inner ring of the bearing 3 remains fixed relative to the outer ring.

[0027] In this embodiment, there are two infrared sensors 41 arranged adjacent to each other. The rotation direction of the rotating knob 2 is determined according to the signal detection order of the two infrared sensors 41. The rotation direction is determined according to the signal detected first by the two infrared sensors 41. For example, if the left infrared sensor 41 detects the reflected signal first and the right infrared sensor 41 detects the reflected signal later, the rotation direction can be determined to be from left to right.

[0028] In this embodiment, the wave structure 21 includes a protrusion 211 and a recess 212. Each recess 212 is provided with a sensing grating 7. The corresponding angle can be calculated based on the number of recesses 212. When the rotating knob 2 is rotated, the magnitude of the user's adjustment range can be determined based on the signal rate fed back by the infrared sensor 41, thereby controlling the parameter adjustment range of the electronic product. When the infrared sensor 41 signal detection rate is fast, the adjustment range is larger, and when the detection rate is slow, the adjustment range is slower. Specifically, a reference rate can be set to distinguish the fast and slow boundaries. Since the top bead 15 on the separator bracket 13 will definitely be in one of the recesses 212 when the rotating knob 2 is stationary, the recess 212 will first pass through one of the infrared sensors 41 when the rotating knob 2 is rotated.

[0029] In this embodiment, the cylindrical surface of the partition bracket 13 is provided with a spring hole 131 opposite to the wave structure 21. A telescopic spring 14 and a top bead 15 are provided in the spring hole 131. The two ends of the telescopic spring 14 are fixedly connected to the end face of the spring hole 131 and the top bead 15, respectively. The top bead 15 protrudes out of the spring hole 131. When the rotating sleeve 2 is rotated quickly, the top bead 15 on the partition bracket 13 is pushed back into the spring hole 131 due to the elastic force of the telescopic spring 14 and the alternation of the protrusions 211 and concave parts 212 of the wave structure 21. It is also pushed out of the hole due to the elastic force of the telescopic spring 14. In addition, the continuous clicking sound produced by the rotation adds a certain fun and stress-relieving experience to the knob switch; and the telescopic spring 14 also provides a certain feel for the rotation. The resistance it generates prevents the user from rotating too smoothly. The user needs to overcome the elastic force of the telescopic spring 14 to push the top bead 15 back into the spring hole 131, avoiding the problem of excessive fluctuation when adjusting parameters. Furthermore, different rotational feel can be obtained by adjusting the size of the top bead 15 and the length and elastic force of the telescopic spring 14. Combined with the length of the concave and convex parts of the wave structure, even more rotational feel can be obtained.

[0030] In this embodiment, the rotary knob 2, the bearing 3, and the knob housing 5 are bonded together with epoxy resin. Epoxy resin provides strong adhesion to ensure a stable connection between the bearing 3, the rotary knob 2, and the knob housing 5.

[0031] In this embodiment, the base 1 is equipped with a battery 9, a power switch 11, and a charging interface 10. The battery 9, power switch 11, and charging interface are electrically connected to the main control board 6. The cooperation of the battery 9 and the charging interface 10 enables the rotary switch to be portable. The power switch 11 is to prevent the infrared sensor 41 and the main control board 6 from continuing to control the rotary switch when the user is not using it, thus preventing the battery 9 from wasting power.

[0032] In this embodiment, the rotating knob 2 is further fitted with a knob shell 5. The surface of the rotating shell 5 can be sprayed or pasted with any color or image pattern, and the knob shell 5 can be made into any shape. The pattern of any theme can be customized according to the user's preferences, which not only improves the overall aesthetics of the product, but also satisfies the user's DIY interests. The shape of the knob shell 5 can be customized to match the pattern. For example, the surface of the rotating shell 5 can be sprayed with a red bull pattern, and the rotating shell 5 can be made into the head and horns of a bull. It can be flexibly adjusted according to the user's preferences.

[0033] The advantages of this utility model are:

[0034] This invention utilizes the combination of an infrared sensor and a sensing grating to achieve control and adjustment of a rotary switch. While maintaining the adjustment function of the rotary switch, it can also improve the service life of the rotary switch and achieve a more economical improvement in terms of cost. The structure of the rotary knob is combined to achieve a good control and adjustment effect.

[0035] The above-disclosed embodiments are only a few specific examples of this utility model. However, this utility model is not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of this utility model.

Claims

1. A non-contact sensing knob controller structure, characterized in that, The device includes a base, a fixed base, a rotating sleeve, a bearing, and a main control board. The base is fitted and connected to the fixed base, the main control board is fixedly mounted on the fixed base, the bearing is located below the fixed base, and the rotating sleeve is fitted onto the outer ring of the bearing. The inner wall of the rotating sleeve is provided with at least one sensing grating, and the cylindrical surface of the fixed base is provided with at least one infrared sensor opposite to any of the sensing gratings. When the rotating sleeve rotates, the sensing grating interrupts the signal emitted by the infrared sensor, and the rotation angle of the rotating sleeve is detected according to the number of sensing gratings.

2. The non-contact sensing knob controller structure according to claim 1, characterized in that, The inner wall surface of the rotating knob is provided with a wave structure in the circumferential direction. The wave structure includes convex and concave portions. The number of the sensing gratings is adapted to the number of the concave portions, and the position of any sensing grating corresponds to any concave portion.

3. The non-contact sensing knob controller structure according to claim 2, characterized in that, The infrared sensor has two receivers and one transmitter. The rotation direction of the rotating knob is determined by the signal reception order of the two infrared sensors.

4. The non-contact sensing knob controller structure according to claim 3, characterized in that, It also includes a partition bracket, on which a battery compartment is formed. The two ends of the inner ring of the bearing abut against the fixed seat and the battery compartment, respectively. The battery compartment has a connecting slot and a connecting through hole. The fixed seat has a connecting post on one side of the base that fits into the connecting slot. The partition bracket has a threaded post, and an external bolt passes through the connecting through hole and the threaded post for threaded connection, so that the fixed seat and the battery compartment squeeze the inner ring of the bearing.

5. The non-contact sensing knob controller structure according to claim 4, characterized in that, The column surface of the partition bracket is provided with a spring hole opposite to the wave structure. A telescopic spring and a top ball are provided in the spring hole. The two ends of the telescopic spring are fixedly connected to the end face of the spring hole and the top ball, respectively, and the top ball protrudes out of the spring hole.

6. The non-contact sensing knob controller structure according to claim 4, characterized in that, The rotary knob, bearing, and knob housing are bonded together with epoxy resin.

7. The non-contact sensing knob controller structure according to claim 1, characterized in that, The base is equipped with a battery, a power switch, and a charging interface, and the battery, the power switch, and the charging interface are electrically connected to the main control board.

8. The non-contact sensing knob controller structure according to claim 1, characterized in that, The rotating knob is further encased in a knob shell, the surface of which can be sprayed or pasted with any color or image pattern, and the knob shell can be made into any shape.

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