A hand-cranked pulse generator

Abstract

The utility model discloses a hand -operated pulse generator, solve the malpractice that exists in the operation feeling aspect of hand -operated pulse generator. It includes metal main body frame, rear housing, main shaft, bearing assembly, handle, strong magnetic block, gear shape tray, printed circuit board, hall sensor chip and magnet, the rear housing and metal main body frame constitute an installation cavity, just the main shaft passes through bearing assembly mechanical installation in metal main body frame, and handle is installed in the front end of main shaft, the printed circuit board is fixed in the installation cavity, and the printed circuit board has the hall sensor chip of pairing arrangement with the magnet rear end of main shaft, the strong magnetic block and gear shape tray of mutual adhesion cooperation all are with main shaft mechanical fixed connection, and is provided on the gear shape tray and sets up the gear protrusion, and the gear protrusion has the configuration of equal proportion along the circumferential direction with the convex of setting in the inner wall of metal main body frame, and the main shaft rotation drives the gear protrusion and convex relative movement and produces the clear magnetic attraction type rotation touch feeling.

Description

Technical Field

[0001] This utility model relates to the technical field of hand-cranked pulse generators. Background Technology

[0002] During product development, based on the requirements of human-computer interaction, the design of the hand-cranked pulse generator must achieve a knob with a comfortable rotating feel that is addictive to touch, while balancing user pleasure and operational precision. This human-computer interaction design must meet three levels: first, it must be based on the user's ergonomics (size / torque); second, it must be implemented through mechanical structure (ratchet / damping); and finally, it must consider perceptual psychology (sound / vibration feedback).

[0003] In the existing design of hand-cranked pulse generators for CNC machine tools, a ratchet design is usually adopted. The ratchet provides damping during rotation and produces a "clicking" sound or vibration. The clicking sound frequency of the knob can make the operator feel happy and improve the smoothness of operation by 30%, thus achieving perceptual feedback. However, ratchet also has its drawbacks, such as being prone to wear and failure or failure due to oil contamination.

[0004] Meanwhile, existing hand-cranked pulse generators on the market use a rotatable toothed wheel (71) inside a mechanical carrier to rotate a metal needle roller, producing a clicking sound. The photoelectric pair counts infrared light by blocking it with light-transmitting and light-blocking grids on a grating code disk. The count is used to obtain the number of pulses passing through in one revolution, and the circuitry processes this data to send an A and B quadrature pulse signal to the CNC system for counting. This structure has several physical drawbacks. For example, the precision of the code disk machining and manual assembly, the machining precision of the metal mechanical carrier, and the perpendicularity of the photoelectric pair all affect the pulse width ratio and phase difference of the A and B quadrature pulses. These problems make it difficult to achieve consistency in signal standards, limiting the control to a specific range. This significantly impacts production efficiency. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a hand-cranked pulse generator, which solves the drawbacks of hand-cranked pulse generators in terms of operating feel and positioning accuracy of standardized orthogonal signals.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A hand-cranked pulse generator includes a metal main frame, a rear shell, a main shaft, a bearing assembly, a crank handle, a strong magnetic block, a toothed disk, a printed circuit board, a Hall sensor chip, and a magnet. The rear shell and the metal main frame form a mounting cavity, and the main shaft is mechanically mounted in the metal main frame via the bearing assembly. The crank handle is mounted at the front end of the main shaft. The printed circuit board is fixed in the mounting cavity and has a Hall sensor chip that is paired with the magnet at the rear end of the main shaft. The strong magnetic block and the toothed disk, which are fitted together, are mechanically fixedly connected to the main shaft. The toothed disk has toothed protrusions that are proportionally arranged with protrusions on the inner wall of the metal main frame along the circumferential direction. Rotating the crank handle causes the toothed protrusions and protrusions to move relative to each other through the rotation of the main shaft, producing a clear magnetic rotational tactile sensation.

[0007] Furthermore, the toothed disk is a steel disc-like part with a strong magnetic block attached to its side.

[0008] Furthermore, the number of the teeth is configured in a 1:1 ratio with the number of graduations on the crank handle.

[0009] Furthermore, the ratio of the number of teeth to protrusions is 6 times, 5 times, 4 times, 3 times, or 2 times.

[0010] Furthermore, in the circumferential direction, the tooth tip of the tooth protrusion is equal to the arc length of the protrusion.

[0011] Furthermore, the metal main frame has a flange with multiple bolt holes at its outermost edge.

[0012] Furthermore, the metal main frame and the rear shell are mechanically connected by a snap-fit ​​mechanism.

[0013] Furthermore, the gap between the magnet and the Anhol sensor chip is maintained between 0.5 and 2.0 mm.

[0014] Furthermore, the toothed disc is fixed to the spindle by a tight fit, a key connection, or an adhesive fit.

[0015] Furthermore, the printed circuit board is fixedly installed in the mounting cavity by a positioning ring.

[0016] The beneficial effects of this utility model are: This embodiment effectively optimizes the issues of inconsistent and non-standard duty cycles and phase differences in orthogonal waveforms. Furthermore, the magnetic attraction between the protrusions and tooth tips achieves higher positioning accuracy during spindle rotation and stopping, ultimately improving positioning precision and user experience. This product creates a clear, consistent, comfortable, self-resetting, and intuitive tactile language through the ingenious interaction of the protrusions and tooth tips, allowing the operator to gain a sense of control and satisfaction.

[0017] After implementing this technology, the operating force and rotation range are balanced between "clear and discernible," "positive feedback," and "comfortable and effortless" during operation, enhancing user perception and confirmation. This technology also avoids unnecessary friction noises, creaking sounds, and other unwanted noises during operation, improving the product's premium feel. This technology provides extremely clear operation, precise gear selection, and a wide angular resolution. Attached Figure Description

[0018] Figure 1 This is a 3D view of a hand-cranked pulse generator, showing its appearance.

[0019] Figure 2 This is a 3D view of a hand-cranked pulse generator, showing the effect of a rotating cross-section.

[0020] Figure 3 for Figure 2 Side view.

[0021] Figure 4 This is a 3D view of a hand-cranked pulse generator, showing the effect of a rotating cross-section.

[0022] Figure 5 This is a full sectional view of a hand-cranked pulse generator.

[0023] Figure 6 for Figure 5 Section B-B.

[0024] Figure 7 for Figure 6 Enlarged view of a portion of point A in the middle.

[0025] Figure 8 for Figure 7 Another embodiment is shown.

[0026] Figure 9 This is a three-dimensional view of the main metal frame.

[0027] Figure 10 This is a three-dimensional view of the main metal frame, showcasing another perspective.

[0028] Figure 11 This is a full sectional view of the main metal frame.

[0029] Figure 12 A three-dimensional diagram with the main axis as the center.

[0030] Figure 13 A full sectional view with the main axis as the axis.

[0031] Figure 14 This is a 3D diagram of a strong magnetic block.

[0032] Figure 15This is a three-dimensional view of the toothed disk.

[0033] Figure 16 This is a 3D view of the rear shell.

[0034] Figure 17 This is a 3D view of the back cover, showing another perspective.

[0035] Figure 18 The diagram shows a 3D view of the printed circuit board, illustrating the fixed position of the Hall sensor chip 81.

[0036] Figure 19 This is a 3D view of the positioning ring.

[0037] Figure 20 This demonstrates the principle of pairing a magnet with a Hall effect sensor chip.

[0038] In the diagram: 10. Metal main frame; 11. Shaft cylinder; 12. Flange; 13. Stator cylinder; 14. Bolt hole; 15. Protrusion; 16. Groove; 17. Slot; 20. Rear shell; 21. Snap-on protrusion; 30. Main shaft; 31. Handle mounting section; 32. Bearing assembly mounting section; 33. Strong magnet mounting section; 34. Gear plate mounting section; 40. Bearing assembly; 50. Handle; 60. Strong magnet; 70. Gear plate; 71. Tooth protrusion; 72. Tooth protrusion groove; 80. Printed circuit board; 81. Hall sensor chip; 82. Magnet; 83. Electrical signal terminal; 90. Positioning ring; 91. Snap-on structure. Detailed Implementation

[0039] This embodiment discloses a hand-cranked pulse generator, operated by rotation, which features intuitive operation, clear feedback, and a pleasant physical interaction experience. It also has a clear magnetic rotational tactile feedback, accurately conveying and sensing the number of pulses generated during rotation. It offers precise and controllable operation, providing a self-resetting setting through magnetic attraction, and clear pulse settings for smooth and accurate pulse adjustment. The product is durable and reliable, unaffected by external environmental factors such as oil stains, and can withstand long-term frequent use while maintaining stable feedback characteristics.

[0040] This embodiment will be described in conjunction with the appendix to the instruction manual. Figure 1 To be continued Figure 2 The mechanical structure and working principle of the hand-cranked pulse generator are described in detail.

[0041] The hand-cranked pulse generator has a metal main frame 10, the structure of which can be referred to as follows: Figures 9 to 11As shown, this is an integrated component comprising a shaft cylinder 11, a flange 12, and a stator cylinder 13, all coaxially arranged. The shaft cylinder 11 provides mounting points for the bearing assembly 40 and for mounting the main shaft 30. A flange 12, concentrically positioned with the shaft cylinder 11, has multiple bolt holes 14 along its outermost edge. These bolt holes 14 are also used to mount the hand-cranked pulse generator, allowing it to be installed using screws. The stator cylinder 13 has a diameter significantly larger than that of the shaft cylinder 11 and extends from the flange 12 away from the knob. A groove 17 is provided on the outer surface of the stator cylinder 13 for engaging with the latching protrusion 21 of the rear housing 20. (Reference) Figure 16 and Figure 17 The rear shell 20 is an injection-molded part and is provided with a snap-fit ​​protrusion 21. The rear shell 20 is fixed to the stator cylinder 13 by a snap-fit ​​mechanism, enabling quick assembly of the two. On the inner annular surface of the stator cylinder 13, specifically near the rear, there are 20 grooves 16 and 20 protrusions 15. The grooves 16 and protrusions 15 are spaced apart. In this embodiment, an arc-shaped groove 16 is shown; this shape is merely illustrative. Unless otherwise specified, the shape of the groove 16 can be any shape, such as a common arc, triangle, rectangle, etc. Two adjacent grooves 16 clamp together to form an inwardly convex protrusion 15. There are 20 vertical protrusions 15, evenly spaced along the circumferential direction. The 20 protrusions 15 form an annular surface with an intermittent effect in the annular direction, providing magnetic adsorption points, i.e., forming 20 adsorption points.

[0042] Spindle 30 is the second major component, see reference. Figure 12 and Figure 13 In terms of mechanical structure, along the main shaft 30 from front to back are, in sequence, a crank mounting section 31, a bearing assembly mounting section 32, a strong magnet mounting section 33, and a toothed disk mounting section 34. A milled hole is drilled at the rear end face of the main shaft 30 and a magnet 82 is installed. The magnet 82 at the rear end is designed to be close to the Hall sensor chip 81 mounted on the circuit board with a small gap. Theoretically, the gap between the two is set between 0.5 and 2.0 mm. The rotation of the main shaft 30 drives the rotation of the magnet 82. The built-in Hall sensor chip 81 detects the rotating magnetic field and processes the induced voltage signal obtained by the Hall sensor chip 81 until a pulse signal is output.

[0043] The spindle 30 is mounted in the metal main frame 10 via a bearing assembly 40, and a crank 50 is fixedly mounted on the crank mounting section 31. The crank 50 has annularly spaced graduations for reference. Figure 1 In this embodiment, the scale is an integer multiple of 20—100, and each scale corresponds to an angle of 3.6°.

[0044] The strong magnetic block mounting section 33 of the main spindle 30 has a shoulder-shaped disc structure, which provides an adsorption mounting area for the strong magnetic block 60, wherein the strong magnetic block 60 is a ring-shaped strong magnetic element, as shown in the reference section. Figure 14 The strong magnetic block 60 is fitted and attached to the strong magnetic block mounting section 33 of the main shaft 30, so that the strong magnetic block 60 is securely fixed and will not fall off. Adjacent to the strong magnetic block 60 is the toothed disk mounting section 34, and a toothed disk 70 is fixedly installed at the toothed disk mounting section 34. The toothed disk 70 is fixed to the main shaft 30 by means of tight fit, adhesive fit, key connection, etc. After being fixed, the toothed disk 70 rotates synchronously with the main shaft 30, that is, the main shaft 30 drives the toothed disk 70 to move, and the rotation of the toothed disk 70 is synchronized with the input of the front crank 50 to ensure the accuracy of transmission.

[0045] refer to Figure 15 The aforementioned toothed disk 70 is a steel disc-like part of a certain thickness, with a strong magnet 60 adsorbed and connected to its side, and magnetized by the strong magnet 60, making it magnetic. The outer edge of the toothed disk 70 has 100 machined tooth protrusions 71 and 100 tooth protrusion grooves 72. The number of tooth protrusions 71 corresponds to the number of graduations on the crank handle 50 in a 1:1 ratio, and is five times the number of protrusions 15 on the metal main frame 10. The tooth tip of the tooth protrusion 71 has a span equivalent to that of the protrusion 15, that is, in the circumferential direction, the tooth tip of the tooth protrusion 71 and the arc length of the protrusion 15 are configured in a 1:1 ratio. In the thickness direction of the toothed disk 70, the thickness of the tooth protrusion 71 is slightly smaller than the axial dimension of the protrusion 15. In the fully installed state, the tooth tip overlaps with the protrusion 15. Furthermore, the two have a 5-fold quantitative relationship. When the toothed disk 70 is rotated, there is a significant magnetic resistance, and this magnetic resistance is step-wise. Under the magnetic attraction, the tooth tip and the protrusion 15 have a self-resetting adsorption feeling, which is fed back to the operating end of the crank 50. This operation has the feel of resistance and magnetic resetting, generating torque damping and generating damping feedback during the rotation process. Each time, this feedback corresponds to an angle of 3.6°.

[0046] This embodiment utilizes the principle of magnetic field lines generated between the toothed disk 70 and the protrusions 15 and tooth tips on the metal main frame 10. This allows the operator to accurately sense and control the rotational precision of the spindle 30 during the operation of the crank 50. Furthermore, this adsorption effect can ensure the accurate precision of the toothed disk 70, guaranteeing the precision of each rotation and the precision of the stopping position, thus providing better spatial positioning precision for the circuit hardware.

[0047] In this embodiment, the main shaft 30 rotates and acts as a rotor. A magnet 82 is installed at the rear end of the main shaft 30. This magnet 82 is paired with the Hall sensor chip 81 and is not original to this product. It generates pulse signals, and its working principle is referenced from [reference needed]. Figure 20 This is a built-in function of the Hall sensor chip 81, which will not be elaborated further; it is a mature configuration component that has been purchased.

[0048] The Hall sensor chip 81 described above is mounted on the printed circuit board 80, as shown in the reference. Figure 18 The printed circuit board 80 has an electrical signal terminal 83 led out from the back, which is a standard configuration for hand-cranked pulse generators and will not be described further.

[0049] In this embodiment, the printed circuit board 80 is fixedly installed in the inner cavity of the generator by a positioning ring 90, and the positioning ring 90 is provided with a snap-fit ​​structure 91, as shown in the reference. Figure 19 The printed circuit board 80 and the metal main frame 10 are fixedly connected by the snap-fit ​​structure 91, so that the installed printed circuit board 80 has a stable position, that is, it does not move or rotate in the axial and circumferential directions, which is of positive significance for the operation of the Hall sensor chip 81.

[0050] The aforementioned magnet 82 is mounted at the center of the rear end face of the main spindle 30, meaning the rotation center of the magnet 82 coincides with the rotation axis of the main spindle 30. (Reference) Figure 20 The aforementioned magnet 82 is a coaxial magnet with N and S poles. When the main shaft 30 rotates, the magnet 82 will rotate synchronously with the main shaft 30 and be sensed by the Hall sensor chip 81. Through the principle of the change in the position of the N and S poles of the coaxial magnet 82, the Hall sensor chip 81 will sense the change in the position angle of the magnet 82 and output a position digital signal (SPI). This position digital signal is finally converted into a standard voltage signal output to realize the AB quadrature pulse signal output.

Claims

1. A hand-cranked pulse generator, characterized in that, The assembly includes a metal main frame (10), a rear shell (20), a spindle (30), a bearing assembly (40), a crank handle (50), a strong magnet (60), a toothed disk (70), a printed circuit board (80), a Hall sensor chip (81), and a magnet (82). The rear shell (20) and the metal main frame (10) form a mounting cavity, and the spindle (30) is mechanically mounted in the metal main frame (10) via the bearing assembly (40). The crank handle (50) is mounted on the front end of the spindle (30), and the printed circuit board (80) is fixed inside the mounting cavity. The printed circuit board (80) has a Hall sensor chip (81) that is paired with a magnet (82) at the rear end of the spindle (30). The strong magnetic block (60) and the toothed disk (70) that fit together are mechanically fixed to the spindle (30). A toothed protrusion (71) is provided on the toothed disk (70). The toothed protrusion (71) and the protrusion (15) provided on the inner wall of the metal main frame (10) are configured in proportion along the circumferential direction. The rotating handle (50) rotates and drives the toothed protrusion (71) and the protrusion (15) to move relative to each other and generate a clear magnetic rotating touch.

2. The hand-cranked pulse generator according to claim 1, characterized in that, The toothed disk (70) is a steel disc-like part and a strong magnetic block (60) is attached to its side.

3. A hand-cranked pulse generator according to claim 1, characterized in that, The number of the teeth (71) is configured in a 1:1 ratio with the number of graduations on the crank (50).

4. A hand-cranked pulse generator according to claim 3, characterized in that, The ratio of the number of the toothed protrusions (71) to the number of the protrusions (15) is 6 times, 5 times, 4 times, 3 times or 2 times.

5. A hand-cranked pulse generator according to claim 3, characterized in that, In the circumferential direction, the tooth tip of the tooth protrusion (71) is equal to the arc length of the protrusion (15).

6. A hand-cranked pulse generator according to claim 1, characterized in that, The metal main frame (10) has a flange (12) with a plurality of bolt holes (14) at the outermost edge of the flange (12).

7. A hand-cranked pulse generator according to claim 1, characterized in that, The metal main frame (10) and the rear shell (20) are mechanically connected by a snap-fit ​​mechanism.

8. A hand-cranked pulse generator according to claim 1, characterized in that, The gap between the magnet (82) and the Anhol sensor chip (81) is maintained between 0.5 and 2.0 mm.

9. A hand-cranked pulse generator according to claim 1, characterized in that, The toothed disc (70) and the spindle (30) are fixed by tight fit, key connection or adhesive fit.

10. A hand-cranked pulse generator according to claim 1, characterized in that, The printed circuit board (80) is fixedly installed in the mounting cavity by a positioning ring (90).

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