Hall signal output device for mouse wheel

Abstract

The utility model discloses a Hall signal output device for a mouse wheel. Comprising an encoder fixing support arranged in the mouse, an encoder roller rotationally arranged in the encoder fixing support, a magnetic ring arranged in the encoder roller, and a Hall encoder which is arranged on the side edge of the encoder fixing support and right faces the magnetic ring. When the encoder roller rotates, the magnetic ring is driven to rotate, so that the direction of the magnetic line of force of the magnetic ring is changed, and the Hall encoder generates pulse signal output after identifying the change of the magnetic line of force of the magnetic ring. The Hall signal output device for the mouse wheel is simple in structure, low in production cost, high in precision and high in response speed, and meets the use requirements of modern people.

Description

Technical Field

[0001] The utility model relates to the technical field of mouse, in particular to a Hall signal output device for a mouse wheel. Background Art

[0002] The mouse wheel generally refers to the part between the left and right buttons on the mouse. When the mouse wheel is turned during use, the encoder on the mouse wheel identifies the direction and distance of the mouse wheel rotation, generates corresponding electrical signals and transmits them to the computer, thereby realizing corresponding operations such as page turning and dragging. The wheel usually adopts the principle of photoelectric encoder, which is composed of a light-emitting diode and a photodiode. The light-emitting diode emits light, and when the light passes through some grooves or protrusions on the wheel, it will be received by the photodiode. Depending on the degree of the groove or protrusion, the photodiode can sense different changes in light intensity and convert it into electrical signals, which are sent to the control circuit of the mouse and then read by the computer. The computer determines the scrolling direction and speed of the wheel through the detected electrical signals, and then performs related operations of scrolling up and down. However, the structure of this photoelectric encoder is relatively complex, the cost is high, and it is not conducive to production and maintenance. Utility Model Content

[0003] In view of the above-mentioned shortcomings, the purpose of the utility model is to provide a Hall signal output device for a mouse wheel, which has a simple structure, low production cost, high precision, and fast response speed to meet the usage needs of contemporary people.

[0004] The technical solution adopted by the utility model to achieve the above-mentioned purpose is:

[0005] A Hall signal output device for a mouse wheel comprises an encoder fixing bracket arranged in the mouse, an encoder wheel rotatably arranged in the encoder fixing bracket, a magnetic ring arranged in the encoder wheel, and a Hall encoder arranged on the side of the encoder fixing bracket and facing the magnetic ring. When the encoder wheel rotates, the magnetic ring is driven to rotate, thereby changing the direction of the magnetic force lines of the magnetic ring. After the Hall encoder recognizes the change in the magnetic force lines of the magnetic ring, it generates a pulse signal output.

[0006] As a further improvement of the present invention, the Hall encoder includes an FPC circuit board arranged on the side of the encoder fixing bracket, and a Hall chip electrically connected to the FPC circuit board and facing the magnetic ring.

[0007] As a further improvement of the present invention, an "L"-shaped circuit board embedding frame is formed on both sides of the FPC circuit board on the side of the encoder fixing bracket, the bottom of the circuit board embedding frame is connected to the side of the encoder fixing bracket, and the Hall encoder is embedded between the two groups of circuit board embedding frames.

[0008] As a further improvement of the present invention, 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 at the upper end of the side of the encoder fixing bracket between the circuit board embedding frame.

[0009] As a further improvement of the present invention, the upper outer wall of the circuit board pressure limit block is also formed with a first circuit board installation guide surface extending obliquely from the upper side of the encoder fixing bracket to the lower inner side of the two groups of circuit board embedded frames.

[0010] As a further improvement of the present invention, the upper end of the circuit board embedding frame is provided with a second circuit board installation guide surface extending obliquely from the upper part of the circuit board embedding frame to the lower part inside the circuit board embedding frame.

[0011] As a further improvement of the present invention, a rotating shaft extends into the encoder fixing bracket on both sides of the center of the encoder roller, wherein the outer ring of the rotating shaft facing the Hall encoder is provided with a magnet insertion groove for the magnetic ring to be embedded, and the magnetic ring is embedded in the magnet insertion groove.

[0012] As a further improvement of the utility model, a rotation groove for the rotation of the rotation shaft is formed on the inner walls on both sides of the encoder fixing bracket, the lower end of the rotation groove is semicircular matching the rotation shaft, and the upper end of the rotation groove is open.

[0013] As a further improvement of the utility model, a rotation installation guide surface is provided at the upper opening of the rotation groove, which extends obliquely from the upper outside of the rotation groove to the lower inside of the rotation groove.

[0014] The beneficial effects of the utility model are:

[0015] By configuring the device to include an encoder fixing bracket arranged in a mouse, an encoder roller rotatably arranged in the encoder fixing bracket, a magnetic ring arranged in the encoder roller, and a Hall encoder arranged on the side of the encoder fixing bracket and facing the magnetic ring, when the encoder roller rotates, the magnetic ring is driven to rotate, thereby changing the direction of the magnetic lines of force of the magnetic ring, and then the Hall encoder generates a pulse signal output after recognizing the change in the magnetic lines of force of the magnetic ring. The Hall encoder includes an FPC circuit board arranged on the side of the encoder fixing bracket, and a Hall chip electrically connected to the FPC circuit board and facing the magnetic ring. There is a magnetic field between the magnet and the Hall chip. The encoder roller rotates, driving the magnetic ring arranged therein to rotate synchronously. The magnetic field acts on the Hall chip, and a potential difference is generated on both sides of the Hall chip. By conditioning and amplifying the potential difference, an electrical signal proportional to the magnetic field strength can be obtained, so that the speed and direction of rotation of the encoder roller can be obtained, and then the relevant operation of scrolling up and down the computer page can be performed. The operation is simple and convenient, and the structure is simple, without the complex structure of two groups of diodes of the photoelectric encoder, the production cost is low, the precision is high, and the response speed is fast, which meets the use needs of contemporary people. Compared with other sensors, the Hall chip has lower energy, higher stability and higher measurement accuracy, and high integration. Multiple functions can be integrated on one chip, thereby reducing the complexity of the system, simplifying the structure, and saving costs.

[0016] The above is an overview of the technical solution of the utility model. The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall schematic diagram of the utility model;

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

[0019] Figure 3 It is a structural schematic diagram of the encoder fixing bracket;

[0020] Figure 4 It is another structural schematic diagram of the encoder fixing bracket;

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

[0022] In the figure: 1. encoder fixing bracket; 11. circuit board embedding frame; 111. second circuit board installation guide surface; 12. circuit board pressure limit block; 121. first circuit board installation guide surface; 13. rotation groove; 131. rotation installation guide surface; 132. shaft embedding groove; 2. encoder roller; 21. rotation shaft; 22. magnet placement groove; 3. magnetic ring; 4. Hall encoder; 41. FPC circuit board; 411. common end; 412. output end; 42. Hall chip; 43. first capacitor; 44. second capacitor; 45. third capacitor; 46. limit notch. DETAILED DESCRIPTION

[0023] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0024] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not 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" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Please refer to Figures 1 to 5The embodiment of the utility model provides a Hall signal output device for a mouse wheel, comprising an encoder fixing bracket 1 arranged in the mouse, an encoder wheel 2 rotatably arranged in the encoder fixing bracket 1, a magnetic ring 3 arranged in the encoder wheel 2, and a Hall encoder 4 arranged at the side of the encoder fixing bracket 1 and facing the magnetic ring 3; the Hall encoder 4 comprises an FPC circuit board 41 arranged at the side of the encoder fixing bracket 1 and extending downward, and a Hall chip 42 electrically connected to the FPC circuit board 41 and facing the magnetic ring 3.

[0028] There is a magnetic field between the magnet and the Hall chip 42. The encoder roller 2 rotates, driving the magnetic ring 3 disposed therein to rotate synchronously. The magnetic field acts on the Hall chip 42, and a potential difference is generated on both sides of the Hall chip 42. By conditioning and amplifying the potential difference, an electrical signal proportional to the magnetic field strength can be obtained, so that the speed and direction of rotation of the encoder roller 2 can be obtained, and then the relevant operations of scrolling up and down the computer page can be performed. The operation is simple and convenient, and the structure is simple, without the complex structure of two groups of diodes of the photoelectric encoder, the production cost is low, the precision is high, and the response speed is fast, which meets the use needs of contemporary people. Compared with other sensors, the Hall chip 42 has lower energy consumption, higher stability and maintains higher measurement accuracy, and has a high degree of integration. Multiple functions can be integrated on one chip, thereby reducing the complexity of the system, simplifying the structure, and saving costs.

[0029] As for the specific structure and operation mode of the Hall chip 42 , the Hall chip 42 is a conventional component, and its specific structure and operation mode are public prior art, so they are not described in detail in this embodiment.

[0030] The specific method of electrically connecting the FPC circuit board 41 with other structures in the mouse is as follows: Figure 1 and Figure 5 As shown, the FPC circuit board 41 is provided with two groups of common terminals 411 and two groups of output terminals 412 respectively corresponding to the line pins of the Hall chip 42. One of the two groups of common terminals 411 is the power supply VCC, and the other is the ground line. The two groups of common terminals 411 realize the purpose of supplying power to the FPC circuit board 41 and the Hall chip 42 electrically connected to the FPC circuit board 41. One of the two groups of output terminals 412 is the signal Vout, and the other can be the inverse of Vout, a control signal, a speed signal, etc., which can be selected according to the actual situation. The common terminal 411 and the output terminal 412 can be directly connected to the external machine.

[0031] For the FPC circuit board 41, in order to stabilize the transmission of the electrical signal on the FPC circuit board 4141, as shown in FIG. Figure 1 and Figure 5 As shown, the FPC circuit board 41 is also provided with a first capacitor 43 connected between two groups of common terminals 411, a second capacitor 44 connected between one group of common terminals 411 and one group of output terminals 412, and a third capacitor 45 connected between one group of common terminals 411 and another group of output terminals 412. Specifically, the first capacitor 43 is arranged between the power supply VCC and the ground wire. The second capacitor 44 is arranged between the signal Vout and the ground wire. The third capacitor 45 is arranged between another group of output terminals 412 for Vout inverse, control signal, speed signal, etc. and the ground wire. By arranging capacitors on the FPC circuit board 41, the capacitors can be used as filtering elements to effectively filter out high-frequency noise and ripples in the power supply, ensure the stability and reliability of the power supply, improve the anti-interference ability and stability of the FPC circuit board 41, and as an energy storage element, can provide instantaneous energy support for the circuit.

[0032] Preferably, the first capacitor 43, the second capacitor 44, and the third capacitor 45 can be directly integrated into the Hall chip 42, so as to save space, reduce system complexity, simplify structure, and save costs.

[0033] The specific method of setting the Hall encoder 4 on the encoder fixing bracket 1 is as follows: Figure 1 , Figure 3 to Figure 4 As shown, an "L"-shaped circuit board embedding frame 11 is formed on both sides of the FPC circuit board 41 on the side of the encoder fixing bracket 1, and the bottom of the circuit board embedding frame 11 is connected to the side of the encoder fixing bracket 1. The Hall encoder 4 is embedded between the two groups of circuit board embedding frames 11, and its bottom end is pressed against the connection between the bottom of the circuit board embedding frame 11 and the encoder fixing bracket 1, thereby achieving the purpose of installing and fixing the Hall encoder 4. The purpose of dividing the circuit board embedding frame 11 into two groups is to reserve space for the Hall chip 42 soldered on the FPC circuit board 41, reduce the interference of foreign objects on the Hall chip 42, and provide a placement space for the larger Hall chip 42.

[0034] In order to further fix the FPC circuit board 41 on the encoder fixing bracket 1, as shown in FIG. Figure 1 , Figures 3 to 5As shown, a limiting notch 46 is formed on the upper part of the FPC circuit board 41, and the upper end of the side of the encoder fixing bracket 1 is located between the two groups of circuit board embedding frames 11, and a circuit board pressing limiting block 12 matching the limiting notch 46 is also provided. After the FPC circuit board 41 is embedded between the two groups of circuit board embedding frames, the circuit board pressing limiting block 12 presses on the limiting notch 46 to prevent the Hall encoder 4 from shifting when the mouse is operating, resulting in inaccurate measurement of the encoder roller 2, thereby effectively ensuring the measurement accuracy and response efficiency of the device to meet the use needs of contemporary people.

[0035] In order to make the FPC circuit board 41 easier to embed between the two sets of circuit board embedding frames 11, as shown in FIG. Figure 1 , Figure 3 and Figure 5 As shown, the upper outer wall of the circuit board pressing limit block 12 is also formed with a first circuit board installation guide surface 121 which extends obliquely from the top of the encoder fixing bracket 1 to the lower inner part of the two groups of circuit board embedding frames 11. When the FPC circuit board 41 is to be embedded between the two groups of circuit board embedding frames 11, the bottom end of the FPC circuit board 41 first contacts the first circuit board installation guide surface 121. Under the guiding action of the first circuit board installation guide surface 121, the middle of the FPC circuit board 41 is lifted up by the limit plate pressing limit block, and the two sides are correspondingly embedded in the two groups 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.

[0036] In order to further make the FPC circuit board 41 easier to embed between the two sets of circuit board embedding frames 11, as shown in FIG. Figure 1 , Figure 3 and Figure 5 As shown, the upper end of the circuit board embedding frame 11 is provided with a second circuit board installation guide surface 111 which extends obliquely from the upper part of the circuit board embedding frame to the lower part inside the circuit board embedding frame 11. When the FPC circuit board 41 is to be embedded between the two groups of circuit board embedding frames 11, the lower end outer wall of the FPC circuit board 41 first contacts the second circuit board installation guide surface 111. Under the guiding action of the second circuit board installation guide surface 111, the bottom of the FPC circuit board 41 is more easily and accurately embedded between the two groups 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] The specific method of rotating the encoder roller 2 in the encoder fixing bracket 1 is as follows: Figure 2As shown, a rotating shaft 21 extends from both sides of the center of the encoder roller 2 into the encoder fixing bracket 1, wherein a magnet insertion groove 22 for the magnetic ring 3 to be embedded is provided on the outer ring of the rotating shaft 21 facing the Hall encoder 4, and the magnetic ring 3 is embedded in the magnetic insertion groove 22. The rotating shaft 21 is used as the axis, so that the encoder roller 2 rotates with the rotating shaft 21 as the axis during the rotation process, driving the magnetic ring 3 set in its magnet insertion groove 22 to rotate, so that the magnetic field change is sensed by the Hall chip 42. The magnetic ring 3 is a hollow ring, and the hollow part thereof is penetrated by the rotating shaft 21, so as to achieve the purpose of being driven by the rotating shaft 21 to cause the magnetic field to change. It has a simple structure and is easy to operate, effectively ensuring the response speed of the device, and meeting the needs of contemporary people for the mouse.

[0038] The specific method of rotating the rotating shaft 21 in the encoder fixing bracket 1 is as follows: Figure 3 to Figure 4 As shown, a rotation groove 13 for the rotation of the rotation shaft 21 is formed on the inner walls of both sides of the encoder fixing bracket 1, the lower end of the rotation groove 13 is semicircular and matches the rotation shaft 21, and the upper end of the rotation groove 13 is open. The rotation shaft 21 is installed and embedded in the rotation groove 13 through the opening at the upper end of the rotation groove 13, and rotates in the rotation groove 13. By setting the lower end of the rotation groove 13 to be semicircular, it is more matched with the shape of the long shaft-shaped rotation shaft 21, which is conducive to the rotation of the rotation shaft 21 in the rotation groove 13, ensuring the coordination of the various components of the device and improving the accuracy of the device.

[0039] In order to prevent the rotating shaft 21 from falling off or shifting in the rotating groove 13, Figure 3 to Figure 4 As shown, the lower end of the rotating groove 13 is also provided with a rotating shaft embedding groove 132 protruding outward, and the outermost end of the rotating shaft 21 is embedded in the rotating shaft embedding groove 132, so as to prevent the rotating shaft 21 from slipping out of the rotating groove 13 during the rotation process, which is conducive to the rotation of the rotating shaft 21 in the rotating groove 13, ensures the coordination of the various components of the device, and improves the accuracy of the device.

[0040] Preferably, Figure 2 As shown, in order to make the rotating shaft 21 rotate more smoothly in the rotating shaft embedding groove 132, a ball may be further provided at the outermost end of the rotating shaft 21. When the rotating shaft 21 rotates, the ball is synchronously pressed against the inner wall of the rotating shaft embedding groove 132 and rotates, thereby making the rotating shaft 21 rotate more smoothly in the rotating shaft embedding groove 132, making the hand feel of the device better.

[0041] In order to facilitate the installation of the rotating shaft 21 into the rotating groove 13, Figure 1 and Figure 3As shown, a rotation installation guide surface 131 is provided at the upper opening of the rotation groove 13 and extends obliquely from the upper outer side of the rotation groove 13 to the lower inner side of the rotation groove 13. When the encoder roller 2 needs to be installed on the encoder fixing bracket 1, the outer wall of the rotation shaft 21 first contacts with the rotation installation guide surface 131. Under the guiding action of the rotation installation guide surface 131, the outer wall of the rotation shaft 21 is more easily and accurately embedded in the rotation groove 13, thereby achieving the purpose of installing the encoder roller 2 on the encoder fixing bracket 1, and improving the accuracy and efficiency of installing the encoder roller 2 on the encoder fixing bracket 1.

[0042] It should be noted that the Hall signal output device for the mouse wheel disclosed in the utility model is an improvement on the specific structure, and the specific control method is not the innovation point of the utility model. The Hall chip, magnetic ring, wheel, FPC circuit board and other components involved in the utility model can be universal standard parts or components known to those skilled in the art, and their structures, principles and control methods are all known to those skilled in the art through technical manuals or conventional experimental methods.

[0043] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, other structures obtained by adopting the same or similar technical features as the above embodiments of the present invention are within the protection scope of the present invention.

Claims

1. A Hall signal output device for a mouse wheel, characterized in that: The invention comprises an encoder fixing bracket arranged in the mouse, an encoder roller rotatably arranged in the encoder fixing bracket, a magnetic ring arranged in the encoder roller, and a Hall encoder arranged on the side of the encoder fixing bracket and facing the magnetic ring. When the encoder roller rotates, the magnetic ring is driven to rotate, thereby changing the direction of the magnetic force lines of the magnetic ring. Then, after the Hall encoder recognizes the change of the magnetic force lines of the magnetic ring, it generates a pulse signal output.

2. The Hall signal output device for a mouse wheel according to claim 1, characterized in that: The Hall encoder includes an FPC circuit board arranged on the side of the encoder fixing 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 wheel according to claim 2, characterized in that: On the sides of the encoder fixing bracket, there are formed an "L"-shaped circuit board embedding frame on both sides of the FPC circuit board. The bottom of the circuit board embedding frame is connected to the side of the encoder fixing bracket, and the Hall encoder is embedded between the two groups of circuit board embedding frames.

4. The Hall signal output device for a mouse 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 arranged at the upper end of the side of the encoder fixing bracket between the circuit board embedding frame.

5. The Hall signal output device for a mouse wheel according to claim 4, characterized in that: The upper end outer wall of the circuit board pressing limit block is also formed with a first circuit board installation guide surface extending obliquely from the upper part of the encoder fixing bracket to the lower inner part of the circuit board embedding frame.

6. The Hall signal output device for a mouse wheel according to claim 3, characterized in that: The upper end of the circuit board embedding frame is surrounded by a second circuit board installation guide surface which extends obliquely from the upper part of the circuit board embedding frame to the lower part inside the circuit board embedding frame.

7. The Hall signal output device for a mouse wheel according to claim 1, characterized in that: A rotating shaft is extended into the encoder fixing bracket on both sides of the center of the encoder roller, wherein a magnet insertion groove for the magnetic ring to be embedded is provided on the outer ring of the rotating shaft facing the Hall encoder, and the magnetic ring is embedded in the magnet insertion groove.

8. The Hall signal output device for a mouse wheel according to claim 7, characterized in that: A rotation groove for the rotation of the rotation shaft is formed on the inner walls of both sides of the encoder fixing bracket, the lower end of the rotation groove is semicircular and matches the rotation shaft, and the upper end of the rotation groove is open.

9. The Hall signal output device for a mouse wheel according to claim 8, characterized in that: The upper opening of the rotating groove is provided with a rotating installation guide surface which extends obliquely from the upper outer side of the rotating groove to the lower inner side of the rotating groove.

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