Hall signal output device for mouse scroll wheel

Abstract

A Hall signal output device for a mouse scroll wheel. The Hall signal output device comprises an encoder fixing bracket disposed inside a mouse, an encoder scroll wheel rotationally arranged inside the encoder fixing bracket, a magnetic ring disposed inside the encoder scroll wheel, and a Hall encoder disposed on a side edge of the encoder fixing bracket and directly facing the magnetic ring. When being rotated, the encoder scroll wheel drives the magnetic ring to rotate, thereby changing the direction of magnetic field lines of the magnetic ring; and then, after detecting the change in the magnetic field lines of the magnetic ring, the Hall encoder generates a pulse signal and outputs same. The Hall signal output device for a mouse scroll wheel has a simple structure, involves a low production cost, high precision and a high response speed, and meets the usage requirements of contemporary people.

Description

Hall signal output device for mouse scroll wheel TECHNICAL FIELD

[0001] The utility model relates to mouse technical field especially relates to a hall signal output device for mouse scroll wheel. BACKGROUND

[0002] Mouse scroll wheel generally refers to the component between the left button and the right button on the mouse. When using, rotating the mouse scroll wheel, the encoder on the mouse scroll wheel identifies the direction and distance of the mouse scroll wheel rotation, generates corresponding electric signal to the computer, thereby realizing corresponding page turning, dragging and other operations. The scroll wheel usually adopts the principle of photoelectric encoder, and the photoelectric encoder is composed of a light emitting diode and a photodiode group. The light emitting diode emits light, and the light is received by the photodiode when passing through some grooves or protrusions on the scroll wheel. According to the degree of the groove or the protrusion, the photodiode can sense different light intensity changes and convert them into electric signals, and these electric signals are sent to the control circuit of the mouse, and then read by the computer. The computer determines the rolling direction and speed of the scroll wheel through the detected electric signal, and then executes the related operation of up and down scrolling. However, the structure of such photoelectric encoder is relatively complex, the cost is high, and it is not conducive to production and maintenance. SUMMARY

[0003] In view of the above problems, the utility model aims at providing a hall signal output device for mouse scroll wheel, which has simple structure, low production cost, high precision and fast response speed, and meets the use requirement of modern people.

[0004] The utility model discloses the technical scheme adopted for the purpose is:

[0005] A hall signal output device for mouse scroll wheel, comprising an encoder fixed support arranged in a mouse, an encoder roller rotatably arranged in the encoder fixed support, a magnetic ring arranged in the encoder roller, and a hall encoder arranged on the side edge of the encoder fixed support and opposite to the magnetic ring. When the encoder roller rotates, the magnetic ring rotates, thereby changing the direction of the magnetic force line of the magnetic ring, and then the hall encoder generates a pulse signal output after recognizing the change of the magnetic force line of the magnetic ring.

[0006] As a further improvement of the utility model, the hall encoder comprises an FPC circuit board arranged on the side edge of the encoder fixed support, and a hall chip electrically connected to the FPC circuit board and opposite to the magnetic ring.

[0007] As a further improvement of the utility model, the side of the encoder fixing support is provided with a line board embedding frame in the shape of "L" between the two sides of the FPC line board, the bottom of the line board embedding frame is connected with the side of the encoder fixing support, and the Hall encoder is embedded between the two line board embedding frames.

[0008] As a further improvement of the utility model, the upper part of the FPC line board is provided with a limiting gap, and the upper end of the side of the encoder fixing support between the line board embedding frames is further provided with a line board pressing limiting block matched with the limiting gap.

[0009] As a further improvement of the utility model, the upper end of the line board pressing limiting block is further provided with a first line board mounting guide surface extending from above the encoder fixing support to the lower part of the inner part of the two line board embedding frames.

[0010] As a further improvement of the utility model, the upper end of the line board embedding frame is further provided with a second line board mounting guide surface extending from above the line board embedding frame to the lower part of the inner part of the line board embedding frame.

[0011] As a further improvement of the utility model, the encoder roller is provided with a rotating shaft extending from the two sides of the center of the encoder roller to the inside of the encoder fixing support, the outer side of the rotating shaft towards the Hall encoder is further provided with a magnet placing groove for embedding the magnetic ring, and the magnetic ring is embedded in the magnet placing groove.

[0012] As a further improvement of the utility model, the inner wall of the two sides of the encoder fixing support is further provided with a rotating groove for rotating the rotating shaft, the lower end of the rotating groove is in the shape of a semicircle matched with the rotating shaft, and the upper end of the rotating groove is in the shape of an opening.

[0013] As a further improvement of the utility model, the upper end of the rotating groove is provided with a rotating mounting guide surface extending from the upper part outside the rotating groove to the lower part inside the rotating groove.

[0014] The utility model has the advantages of:

[0015] By configuring this device as including an encoder mounting bracket inside the mouse, an encoder roller rotatably mounted inside the encoder mounting bracket, a magnetic ring mounted inside the encoder roller, and a Hall encoder mounted on the side of the encoder mounting bracket and directly opposite the magnetic ring, when the encoder roller rotates, it drives the magnetic ring to rotate, thereby changing the direction of the magnetic field lines of the magnetic ring. Then, after the Hall encoder detects the change in the magnetic field lines of the magnetic ring, it generates a pulse signal output. The Hall encoder includes an FPC circuit board disposed on the side of the encoder mounting bracket and a Hall chip electrically connected to the FPC circuit board and facing the magnetic ring. A magnetic field exists between the magnet and the Hall chip. When the encoder roller rotates, it drives the magnetic ring inside to rotate synchronously. The magnetic field acts on the Hall chip, generating a potential difference across the chip. By conditioning and amplifying this potential difference, an electrical signal proportional to the magnetic field strength can be obtained, thus determining the speed and direction of the encoder roller's rotation. This allows for the execution of scrolling operations on a computer screen. The operation is simple and convenient, with a simple structure, eliminating the need for the complex structure of two sets of diodes in a photoelectric encoder. It has low production costs, high accuracy, and fast response speed, meeting the needs of modern users. Compared to other sensors, the Hall chip has lower power consumption, higher stability, and maintains high measurement accuracy. Its high integration allows multiple functions to be integrated onto a single chip, reducing system complexity, simplifying the structure, and saving costs.

[0016] The above is an overview of the utility model's technical solution. The following description, in conjunction with the accompanying drawings and specific embodiments, will further illustrate the utility model. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the overall invention.

[0018] Figure 2 is an exploded view of the magnetic ring and encoder roller;

[0019] Figure 3 is a schematic diagram of the encoder mounting bracket;

[0020] Figure 4 is a schematic diagram of another structure of the encoder mounting bracket;

[0021] Figure 5 is a schematic diagram of the Hall encoder;

[0022] In the figure: 1, encoder fixed support; 11, line board embedded frame; 111, second line board installation guide surface; 12, line board pressing limiting block; 121, first line board installation guide surface; 13, rotating groove; 131, rotating installation guide surface; 132, rotating shaft embedded groove; 2, encoder roller; 21, rotating shaft; 22, magnet insertion groove; 3, magnetic ring; 4, Hall encoder; 41, FPC line board; 411, common end; 412, output end; 42, Hall chip; 43, first capacitor; 44, second capacitor; 45, third capacitor; 46, limiting gap.

[0023] DETAILED DESCRIPTION

[0024] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined purpose, the specific embodiments of the utility model are described in detail below in combination with the drawings and preferred embodiments.

[0025] In the description of the utility model, it is understood that the directions or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0026] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0027] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0028] Please refer to Fig. 1 to Fig. 5, the utility model discloses a kind of hall signal output devices for mouse scroll wheel, including the encoder fixed support 1 being arranged in mouse, the encoder roller 2 being rotatably arranged in the encoder fixed support 1, the magnetic ring 3 being arranged in the encoder roller 2, and the hall encoder 4 being arranged in the side of the encoder fixed support 1 and being directly opposite the magnetic ring 3;The hall encoder 4 includes the FPC circuit board 41 being arranged in the side of the encoder fixed support 1 and extending downwards, and the hall chip 42 being electrically connected on the FPC circuit board 41 and being directly opposite the magnetic ring 3.

[0029] There is magnetic field between magnet and hall chip 42, the encoder roller 2 rotates, drives the magnetic ring 3 being arranged in it synchronous rotation, magnetic field acts on hall chip 42, potential difference is generated on the two sides of hall chip 42, by regulating and amplifying potential difference, electric signal proportional to magnetic field intensity can be obtained, so that the speed and rotation direction of the encoder roller 2 can be obtained, and then the related operation of computer page up and down scrolling is executed, the operation is simple and convenient, and the structure is simple, without the complex structure of two groups of diodes of photoelectric encoder, production cost is low, precision is high, and response speed is fast, meet the use demand of contemporary people. Hall chip 42 is relatively other sensors, it can be lower, with higher stability and keep higher measurement accuracy, high integration, multiple functions can be integrated on a chip, so as to reduce the complexity of system, simplify structure, save cost.

[0030] For the specific structure and operation mode of the hall chip 42, the hall chip 42 is a conventional piece, and its specific structure and operation mode are disclosed in the prior art, so in this embodiment, it is not described in detail.

[0031] For the specific mode that the FPC circuit board 41 is electrically connected with other structures in mouse, as shown in Fig. 1 and Fig. 5, the FPC circuit board 41 is arranged with two groups of common terminals 411 and two groups of output terminals 412 corresponding to the wire pins of the hall chip 42 respectively, one of the two groups of common terminals 411 is power supply VCC, and the other is ground wire, and the two groups of common terminals 411 realize the power supply purpose of FPC circuit board 41 and the hall chip 42 electrically connected on FPC circuit board 41. One of the two groups of output terminals 412 is signal Vout, and the other can be Vout inverse, control signal, speed signal, etc., which can be selected according to actual situation. The common terminal 411 and the output terminal 412 can be directly connected with external machinery.

[0032] To stabilize the transmission of electrical signals on the FPC circuit board 41, as shown in Figures 1 and 5, the FPC circuit board 41 is further equipped with a first capacitor 43 connected between two sets of common terminals 411, a second capacitor 44 connected between one set of common terminals 411 and one set of output terminals 412, and a third capacitor 45 connected between one set of common terminals 411 and the other set of output terminals 412. Specifically, the first capacitor 43 is located between the power supply VCC and the ground wire. The second capacitor 44 is located between the signal Vout and the ground wire. The third capacitor 45 is located between another set of output terminals 412 (such as Vout inverse, control signal, speed signal, etc.) and the ground wire. By setting capacitors on the FPC circuit board 41, the capacitors, as filtering elements, can effectively filter out high-frequency noise and ripple in the power supply, ensuring the stability and reliability of the power supply, improving the anti-interference ability and stability of the FPC circuit board 41, and as energy storage elements, can provide instantaneous energy support for the circuit.

[0033] Preferably, the first capacitor 43, the second capacitor 44, and the third capacitor 45 can be directly integrated into the Hall chip 42, thereby saving space, reducing system complexity, simplifying the structure, and saving costs.

[0034] As shown in Figures 1 and 3 to 4, the Hall encoder 4 is mounted on the encoder mounting bracket 1 in an "L" shape on both sides of the FPC circuit board 41. The bottom of the circuit board embedding bracket 11 is connected to the side of the encoder mounting bracket 1. The Hall encoder 4 is embedded between the two sets of circuit board embedding brackets 11, and its bottom end presses against the connection between the bottom of the circuit board embedding bracket 11 and the encoder mounting bracket 1, thereby achieving the purpose of installing and fixing the Hall encoder 4. The purpose of dividing the circuit board embedding bracket 11 into two sets is to reserve space for the Hall chip 42 soldered on the FPC circuit board 41, reduce interference from external objects to the Hall chip 42, and provide a space for the larger Hall chip 42.

[0035] To further fix the FPC circuit board 41 onto the encoder mounting bracket 1, as shown in Figures 1, 3 to 5, a limiting notch 46 is formed on the upper part of the FPC circuit board 41. A circuit board pressing limiting block 12 matching the limiting notch 46 is also provided on the upper side of the encoder mounting bracket 1 between the two sets of circuit board embedding frames 11. After the FPC circuit board 41 is embedded between the two sets of circuit board embedding frames, the circuit board pressing limiting block 12 presses against the limiting notch 46, preventing the Hall encoder 4 from shifting during mouse operation, which would cause inaccurate measurement of the encoder roller 2. This effectively ensures the measurement accuracy and response efficiency of the device, meeting the needs of modern users.

[0036] To facilitate the insertion of the FPC circuit board 41 between the two sets of circuit board embedding frames 11, as shown in Figures 1, 3, and 5, a first circuit board mounting guide surface 121 is formed on the upper outer wall of the circuit board pressing and limiting block 12, extending obliquely from above the self-encoder fixing bracket 1 to the lower inner part of the two sets of circuit board embedding frames 11. When the FPC circuit board 41 is to be inserted between the two sets of circuit board embedding frames 11, the bottom end of the FPC circuit board 41 first contacts the first circuit board mounting guide surface 121. Under the guidance of the first circuit board mounting guide surface 121, the middle of the FPC circuit board 41 is lifted by the limiting plate pressing and limiting block, and the two sides are respectively inserted into the two sets of circuit board embedding frames 11, thereby realizing the installation and fixation of the FPC circuit board 41 and improving the installation accuracy and efficiency of the FPC circuit board 41.

[0037] To further facilitate the insertion of the FPC circuit board 41 between the two sets of circuit board embedding frames 11, as shown in Figures 1, 3, and 5, a second circuit board mounting guide surface 111 is provided around the upper end of the circuit board embedding frame 11, extending obliquely from above the frame to the lower inner part of the frame. When the FPC circuit board 41 is to be inserted between the two sets of embedding frames 11, the lower outer wall of the FPC circuit board 41 first contacts the second circuit board mounting guide surface 111. Under the guidance of the second circuit board mounting guide surface 111, the bottom of the FPC circuit board 41 is inserted more easily and accurately between the two sets of embedding frames 11, thereby achieving the installation and fixation of the FPC circuit board 41 and improving the accuracy and efficiency of the installation.

[0038] As shown in Figure 2, the encoder roller 2 rotates within the encoder mounting bracket 1. Two rotating shafts 21 extend from the center of the encoder roller 2 into the encoder mounting bracket 1 on either side. The outer side of the rotating shaft 21 facing the Hall encoder 4 has a magnet insertion groove 22 for the magnetic ring 3 to be embedded in. The magnetic ring 3 is embedded in the magnet insertion groove 22. The rotating shaft 21 serves as the axis, causing the encoder roller 2 to rotate around it during rotation, thus rotating the magnetic ring 3 within its magnet insertion groove 22. This allows the Hall chip 42 to sense changes in the magnetic field. The magnetic ring 3 is a hollow ring, with its hollow portion penetrated by the rotating shaft 21, thereby achieving the purpose of causing magnetic field changes driven by the rotating shaft 21. Its structure is simple, operation is convenient, and it effectively ensures the response speed of the device, meeting the needs of modern users for a mouse.

[0039] As shown in Figures 3 and 4, the rotating shaft 21 rotates within the encoder mounting bracket 1 in a specific manner. A rotating groove 13 is formed on each of the inner walls of the encoder mounting bracket 1 on both sides, allowing the rotating shaft 21 to rotate. The lower end of the rotating groove 13 is semi-circular, matching the shape of the rotating shaft 21, while the upper end is open. The rotating shaft 21 is installed and embedded within the rotating groove 13 through the opening at the upper end, and rotates within the rotating groove 13. By making the lower end of the rotating groove 13 semi-circular, it better matches the shape of the elongated shaft 21, facilitating the rotation of the rotating shaft 21 within the rotating groove 13, ensuring the proper coordination of the components of the device, and improving the accuracy of the device.

[0040] To prevent the rotating shaft 21 from falling out or shifting within the rotating groove 13, as shown in Figures 3 and 4, a rotating shaft embedding groove 132 protruding outward is provided at the lower end of the rotating groove 13. The outermost end of the rotating shaft 21 is embedded in the rotating shaft embedding groove 132, thereby preventing the rotating shaft 21 from sliding out of the rotating groove 13 during rotation. This facilitates the rotation of the rotating shaft 21 within the rotating groove 13, ensuring the coordination of the various components of the device and improving the accuracy of the device.

[0041] Preferably, as shown in Figure 2, in order to make the rotating shaft 21 rotate more smoothly in the rotating shaft embedding groove 132, a ball bearing can also be provided at the outermost end of the rotating shaft 21. The ball bearing rotates synchronously against the inner wall of the rotating shaft embedding groove 132 when the rotating shaft 21 rotates, thereby making the rotating shaft 21 rotate more smoothly in the rotating shaft embedding groove 132 and improving the feel of the device.

[0042] To facilitate the installation of the rotating shaft 21 into the rotating groove 13, as shown in Figures 1 and 3, a rotating mounting guide surface 131 is provided around the upper opening of the rotating groove 13, extending obliquely from the upper outer side of the rotating groove 13 to the lower inner side of the rotating groove 13. When the encoder roller 2 needs to be installed on the encoder mounting bracket 1, the outer wall of the rotating shaft 21 first contacts the rotating mounting guide surface 131. Under the guidance of the rotating mounting guide surface 131, the outer wall of the rotating shaft 21 is more easily and accurately embedded into the rotating groove 13, thereby achieving the purpose of installing the encoder roller 2 on the encoder mounting bracket 1 and improving the accuracy and efficiency of installing the encoder roller 2 on the encoder mounting bracket 1.

[0043] It should be noted that the Hall signal output device for a mouse scroll wheel disclosed in this utility model is an improvement on the specific structure, but the specific control method is not the innovation of this utility model. The Hall chip, magnetic ring, scroll wheel, FPC circuit board, and other components involved in this utility model can be general standard parts or components known to those skilled in the art. Their structure, principle, and control method are all known to those skilled in the art through technical manuals or conventional experimental methods.

[0044] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, other structures obtained by using the same or similar technical features as the above embodiments of the present utility model are all within the protection scope of the present utility model.

Claims

1. A Hall signal output device for a mouse scroll wheel, characterized in that: The device includes an encoder mounting bracket inside the mouse, an encoder roller rotatably mounted inside the encoder mounting bracket, a magnetic ring mounted inside the encoder roller, and a Hall encoder mounted on the side of the encoder mounting bracket and facing the magnetic ring. When the encoder roller rotates, it drives the magnetic ring to rotate, thereby changing the direction of the magnetic field lines of the magnetic ring. The Hall encoder then detects the change in the magnetic field lines of the magnetic ring and generates a pulse signal output.

2. The Hall signal output device for a mouse scroll wheel according to claim 1, characterized in that: The Hall encoder includes an FPC circuit board disposed on the side of the encoder mounting bracket, and a Hall chip electrically connected to the FPC circuit board and facing the magnetic ring.

3. The Hall signal output device for a mouse scroll wheel according to claim 2, characterized in that: On the side of the encoder mounting bracket, on both sides of the FPC circuit board, there are L-shaped circuit board embedding frames. The bottom of the circuit board embedding frames is connected to the side of the encoder mounting bracket, and the Hall encoder is embedded between the two sets of circuit board embedding frames.

4. The Hall signal output device for a mouse scroll wheel according to claim 3, characterized in that: A limiting notch is formed on the upper part of the FPC circuit board, and a circuit board pressing limiting block matching the limiting notch is also provided on the upper side of the encoder fixing bracket between the circuit board embedding frame.

5. The Hall signal output device for a mouse scroll wheel according to claim 4, characterized in that: The upper outer wall of the circuit board pressing limit block also forms a first circuit board mounting guide surface that extends obliquely from above the self-encoder fixing bracket to the lower inner part of the circuit board embedding frame.

6. The Hall signal output device for a mouse scroll wheel according to claim 3, characterized in that: The upper end of the circuit board embedding frame is provided with a second circuit board mounting guide surface that extends obliquely from above the circuit board embedding frame to the lower inner part of the circuit board embedding frame.

7. The Hall signal output device for a mouse scroll wheel according to claim 1, characterized in that: A rotating shaft extends from both sides of the center of the encoder roller into the encoder mounting bracket. The outer side of the rotating shaft facing the Hall encoder is provided with a magnet insertion groove for embedding the magnetic ring. The magnetic ring is embedded in the magnet insertion groove.

8. The Hall signal output device for a mouse scroll wheel according to claim 1, characterized in that: The encoder mounting bracket has a rotating groove formed on each of its two inner walls for the rotating shaft to rotate. The lower end of the rotating groove is semi-circular and matches the rotating shaft, while the upper end of the rotating groove is open.

9. The Hall signal output device for a mouse scroll wheel according to claim 8, characterized in that: The upper opening of the rotating groove is provided with a rotating mounting guide surface that extends obliquely from the upper outside of the rotating groove to the lower inside of the rotating groove.

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