Stroke adjustable structure for keyboard keycap

Abstract

The utility model discloses a stroke adjustable structure for a keyboard keycap, which relates to the technical field of keyboards and comprises a keyboard bottom shell, a PCBA (printed circuit board assembly), a magnetic shaft body, a keycap and a potentiometer, a permanent magnet is fixedly mounted at the bottom of the magnetic shaft body and moves along with the movement of the magnetic shaft body, a coil is arranged on the outer side of the magnetic shaft body in a surrounding manner, and the magnetic shaft body moves along with the coil. The coil is connected with the potentiometer through the PCBA board; one end of the keyboard bottom shell is provided with a mounting groove for mounting the potentiometer, one end of the keyboard bottom shell is provided with a protection assembly for preventing the potentiometer from being touched by mistake, and a positioning assembly for positioning the sliding end of the potentiometer is arranged in the protection assembly. The magnetic field intensity can be adjusted in real time, so that the vertical sliding stroke of the magnetic shaft body is accurately controlled, stepless adjustment of the stroke of the keycap is achieved, the requirements of different users for typing hand feeling are met, the structure is simple, and the cost is low.

Description

Technical Field

[0001] This utility model relates to the field of keyboard technology, and in particular to an adjustable travel structure for keyboard keycaps. Background Technology

[0002] A keyboard is a device used to input instructions and data to operate computer equipment; it also refers to a set of function keys arranged by a system to operate a machine or device. With the widespread use of electronic devices, keyboards, as important input devices, have seen users demanding increasingly higher levels of user experience.

[0003] Currently, traditional keyboards typically have a fixed key travel distance, which cannot meet the diverse needs of different users for key feel. For example, gamers may prefer a shorter travel distance for quick key presses and improved game response speed; while writers may prefer a longer travel distance for more noticeable key feedback and reduced accidental key presses. Although there are some keyboards on the market that claim adjustable travel distance, most of them are complex in structure, expensive, or have unsatisfactory adjustment effects, failing to accurately switch between different travel distances. Therefore, designing a simple and low-cost adjustable travel structure for keyboard keycaps is of great practical significance. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies by proposing an adjustable travel structure for keyboard keycaps. Its advantages include the ability to adjust the magnetic field strength in real time, precisely control the up-and-down sliding travel of the magnetic axis, and achieve stepless adjustment of the keycap travel to meet the typing feel needs of different users. Furthermore, its structure is simple and inexpensive.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An adjustable travel structure for keyboard keycaps includes a keyboard bottom shell, a PCBA board, a magnetic axis, keycaps, and a potentiometer. A permanent magnet is fixedly installed at the bottom of the magnetic axis, which moves as the magnetic axis moves. A coil is arranged around the outside of the magnetic axis, and the coil is connected to the potentiometer through the PCBA board.

[0007] One end of the keyboard bottom shell has a mounting slot for installing the potentiometer, and another end of the keyboard bottom shell is equipped with a protective component to prevent accidental touch of the potentiometer. Inside the protective component is a positioning component for positioning the sliding end of the potentiometer.

[0008] Through the above technical solutions, the magnetic field strength can be adjusted in real time, thereby precisely controlling the up and down sliding stroke of the magnetic axis and realizing stepless adjustment of the keycap travel to meet the typing feel needs of different users.

[0009] The present invention is further configured such that the PCBA board is fixedly mounted on the bottom shell of the keyboard, the keycaps are fixedly mounted on the top of the magnetic axis body, and the magnetic axis body is slidably mounted on the PCBA board.

[0010] The present invention is further configured such that the coil is a hollow cylindrical structure, and the magnetic shaft penetrates the central hole of the coil, and a certain gap is maintained between the magnetic shaft and the coil to ensure that the magnetic shaft can move smoothly up and down.

[0011] The present invention is further configured such that the permanent magnet is a cylindrical structure, the bottom surface of which is flush with the bottom surface of the magnetic shaft, and the magnetic pole direction of the permanent magnet is consistent with the axial direction of the magnetic shaft.

[0012] Through the above technical solutions, the electromagnetic interaction between the permanent magnet and the coil is a non-contact transmission. Compared with the physical contact structure of traditional mechanical shafts, there is no wear or jamming, and the stroke adjustment is not delayed. Even with long-term high-frequency use, the stroke accuracy can still be maintained, avoiding changes in feel caused by mechanical wear.

[0013] The present invention is further configured such that the protective component includes a hinge installed at one end of the keyboard bottom shell, and a protective cover is installed on one side of the hinge. A sealing strip is fixed to the inner wall of the protective cover around the perimeter and fits against the outer wall of one end of the keyboard bottom shell. A locking component is provided at one end of the protective cover.

[0014] The above technical solutions effectively prevent dust and liquids from entering the potentiometer through the sealing strip, and the protective cover acts as a physical shield to prevent users from accidentally touching the potentiometer during normal keyboard use, thus ensuring the stability of the keycap travel setting.

[0015] The present invention is further configured such that the locking assembly includes a connecting plate installed at the other end of the keyboard bottom shell, and a toggle lever is rotatably connected to the connecting plate. A locking groove is provided on the toggle lever, and a locking rod passing through the locking groove is installed on the outer wall of one end of the keyboard bottom shell.

[0016] The above technical solution works as follows: after the protective cover is closed, the lever is rotated to make the locking lever pass through the locking groove, thereby locking the protective cover in the closed position and preventing it from being opened accidentally.

[0017] The present invention is further configured such that the positioning component includes a positioning frame installed on the sliding end of the potentiometer, and connecting rods are fixed at both ends of the positioning frame. A T-shaped rod is fixed at one end of each connecting rod. A pressure plate is attached to one side of the positioning frame, and two through holes are provided on the pressure plate for the T-shaped rod to pass through. A spring is installed at one end of the T-shaped rod and one side of the pressure plate. A pressure seat is installed in the middle of the inner wall of one side of the positioning frame, and the position of the pressure seat corresponds to the position of the positioning frame.

[0018] The above technical solutions prevent the potentiometer slider from shifting due to vibration or pressing, ensuring the long-term stability of the feel setting.

[0019] The present invention is further configured such that one side of the positioning frame is provided with equally spaced slots, and one side of the pressing plate is fixed with a card block inserted into the slot.

[0020] The above technical solutions enable efficient locking of the potentiometer's sliding end.

[0021] The beneficial effects of this utility model are as follows:

[0022] 1. This utility model can adjust the magnetic field strength in real time by changing the current parameter of the coil through a potentiometer, thereby precisely controlling the up and down sliding stroke of the magnetic shaft and realizing stepless adjustment of the keycap stroke to meet the typing feel needs of different users. Its structure is simple and low cost, and the electromagnetic interaction between the permanent magnet and the coil is a non-contact transmission. Compared with the physical contact structure of traditional mechanical shafts, there is no wear or jamming, and the stroke adjustment is not delayed. Even with long-term high-frequency use, the stroke accuracy can still be maintained, avoiding changes in feel caused by mechanical wear.

[0023] 2. In this utility model, a protective cover connected by a hinge can cover the potentiometer. The sealing strip around the perimeter fits snugly against the bottom shell of the keyboard, preventing dust and liquid from entering and avoiding poor contact due to contamination of the internal contacts of the potentiometer. At the same time, the physical shield prevents accidental contact by the user, ensuring the stability of the set stroke. After the potentiometer is adjusted, the protective cover closes, causing the clamping seat to press against the clamping plate and embed the locking block into the slot of the positioning frame, forming an efficient lock. This prevents the sliding end of the potentiometer from shifting due to vibration or pressing, ensuring the long-term stability of the tactile setting. Attached Figure Description

[0024] Figure 1 An exploded three-dimensional view of an adjustable travel structure for keyboard keycaps proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of a protective cover and locking groove structure for an adjustable travel structure of keyboard keycaps proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of a pressure seat and positioning frame structure for an adjustable travel structure of keyboard keycaps proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of a pressure plate and spring structure for an adjustable travel structure of keyboard keycaps proposed in this utility model;

[0028] Figure 5 This is a schematic diagram of the permanent magnet and coil structure of an adjustable travel structure for keyboard keycaps proposed in this utility model.

[0029] In the diagram: 1. Keyboard bottom shell; 2. PCBA board; 3. Magnetic shaft body; 4. Keycap; 5. Potentiometer; 6. Protective cover; 7. Positioning assembly; 701. Pressure seat; 702. Positioning frame; 703. Slot; 704. Locking block; 705. Connecting rod; 706. Through hole; 707. Pressure plate; 708. Spring; 709. T-shaped rod; 8. Toggle rod; 9. Locking rod; 10. Mounting slot; 11. Connecting plate; 12. Locking slot; 13. Hinge; 14. Sealing strip; 15. Coil; 16. Permanent magnet. Detailed Implementation

[0030] The technical solution of this utility model will be further described in detail below with reference to specific embodiments.

[0031] Reference Figures 1-5 This utility model provides an adjustable travel structure for keyboard keycaps, including a keyboard base shell 1, a PCBA board 2, a magnetic axis 3, keycaps 4, and a potentiometer 5. A permanent magnet 16 is fixedly installed at the bottom of the magnetic axis 3, which moves with the movement of the magnetic axis 3. A coil 15 is arranged around the outside of the magnetic axis 3, and the coil 15 is connected to the potentiometer 5 through the PCBA board 2. The PCBA board 2 is fixedly installed on the keyboard base shell 1. The keycaps 4 are fixedly installed on the top of the magnetic axis 3, and the magnetic axis 3 is slidably installed on the PCBA board 2. The coil 15 has a hollow cylindrical structure, and the magnetic axis 3 passes through the coil 15. The center hole of 5 and the gap between the magnetic shaft 3 and the coil 15 are maintained to ensure that the magnetic shaft 3 can move up and down smoothly. The permanent magnet 16 is a cylindrical structure with its bottom surface flush with the bottom surface of the magnetic shaft 3. The magnetic pole direction of the permanent magnet 16 is consistent with the axis of the magnetic shaft 3. By using the above-mentioned potentiometer 5, permanent magnet 16 and coil 15, the current parameter of the coil 15 can be changed by changing the position of the sliding end of the potentiometer 5. The magnetic field strength can be adjusted in real time, thereby accurately controlling the up and down sliding stroke of the magnetic shaft 3 and realizing stepless adjustment of the keycap 4 stroke to meet the typing feel needs of different users. Its structure is simple and the cost is low.

[0032] One end of the keyboard bottom shell 1 is provided with a mounting slot 10 for mounting the potentiometer 5, and one end of the keyboard bottom shell 1 is provided with a protective component for preventing accidental touch of the potentiometer 5. The protective component is provided with a positioning component 7 for positioning the sliding end of the potentiometer 5.

[0033] To prevent accidental activation of potentiometer 5, refer to... Figures 1-3The protective assembly includes a hinge 13 installed at one end of the keyboard base 1, and a protective cover 6 installed on one side of the hinge 13. A sealing strip 14 is fixed to the inner wall of the protective cover 6 and adheres to the outer wall of one end of the keyboard base 1. A locking assembly is provided at one end of the protective cover 6. The locking assembly includes a connecting plate 11 installed at the other end of the keyboard base 1, and a toggle lever 8 is rotatably connected to the connecting plate 11. A locking groove 12 is provided on the toggle lever 8. A locking rod 9 passing through the locking groove 12 is installed on the outer wall of one end of the keyboard base 1. With the above-mentioned protective assembly, after adjusting the sliding end position of the potentiometer 5, the potentiometer 5 is covered by the protective cover 6, so that the sealing strip 14 adheres to the keyboard base 1, isolating dust and liquid from entering, preventing poor contact of the internal contacts of the potentiometer 5 due to contamination, and physically blocking to prevent users from accidentally touching it, ensuring the stability of the setting stroke.

[0034] To ensure the stable performance of potentiometer 5 after adjustment, refer to Figure 1 , Figure 3 and Figure 4 The positioning assembly 7 includes a positioning frame 702 mounted on the sliding end of the potentiometer 5, with connecting rods 705 fixed at both ends of the positioning frame 702. A T-shaped rod 709 is fixed to one end of each connecting rod 705. A pressure plate 707 is attached to one side of the positioning frame 702, and the pressure plate 707 has two through holes 706 for the T-shaped rods 709 to pass through. A spring 708 is installed at one end of the T-shaped rod 709 and on one side of the pressure plate 707. A pressure seat 701 is installed in the middle of the inner wall of one side of the positioning frame 702, and the position of the pressure seat 701 corresponds to the position of the positioning frame 702. The pressure seat 701 is designed as a semi-circular... The circular positioning frame 702 has equally spaced slots 703 on one side, and a locking block 704 inserted into the slot 703 is fixed on one side of the clamping plate 707. Using the above-mentioned positioning component 7, after the protective cover 6 is closed, it synchronously drives the clamping seat 701 to squeeze the clamping plate 707 to one side of the positioning frame 702, so that the locking block 704 moves synchronously and compresses the spring 708, so that the locking block 704 is embedded in the slot 703, forming a compression on the positioning frame 702, thereby forming an efficient lock, preventing the sliding end of the potentiometer 5 from being displaced due to vibration or pressing, and ensuring the stable performance of the sliding end of the potentiometer 5.

[0035] Working principle: When potentiometer 5 needs to be adjusted, the protective cover 6 can be opened and the sliding end of potentiometer 5 can be adjusted to different positions. Different currents are provided to coil 15 through PCBA board 2. After coil 15 generates a magnetic field, the magnetic field interacts with the magnetic field of permanent magnet 16, generating a repulsive force. When the user presses keycap 4, magnetic shaft 3 will slide downward. Due to the different magnetic field strength of coil 15, the magnetic force on permanent magnet 16 is also different, thereby changing the resistance and stroke of magnetic shaft 3 sliding downward.

[0036] After adjustment, close the protective cover 6, rotate the lever 8 so that the locking lever 9 passes through the locking groove 12, thereby locking the protective cover 6 in the closed position to prevent it from being opened accidentally. At the same time, the sealing strip 14 on the inner wall of the protective cover 6 is attached to the outer wall of one end of the keyboard bottom shell 1, which can effectively prevent dust, liquids, etc. from entering. The protective cover 6 also acts as a physical shield to prevent the user from accidentally touching the potentiometer 5 when using the keyboard normally, and to ensure the stability of the keycap 4 travel setting.

[0037] When the protective cover 6 is closed, the clamping seat 701 presses the clamping plate 707 to move to one side of the positioning frame 702, causing the locking block 704 to move synchronously and compress the spring 708, so that the locking block 704 is embedded in the slot 703, forming a compression on the positioning frame 702, thereby forming an efficient lock, preventing the sliding end of the potentiometer 5 from being displaced due to vibration or pressing, and ensuring the long-term stability of the feel setting.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An adjustable travel structure for keyboard keycaps, characterized in that, The keyboard includes a bottom shell (1), a PCBA board (2), a magnetic axis (3), keycaps (4), and a potentiometer (5). A permanent magnet (16) is fixedly installed at the bottom of the magnetic axis (3), which moves with the movement of the magnetic axis (3). A coil (15) is arranged around the outside of the magnetic axis (3), and the coil (15) is connected to the potentiometer (5) through the PCBA board (2). The keyboard bottom shell (1) has an installation slot (10) for mounting the potentiometer (5) at one end, and a protective component for preventing accidental touch of the potentiometer (5) is provided at one end of the keyboard bottom shell (1). The protective component contains a positioning component (7) for positioning the sliding end of the potentiometer (5).

2. The adjustable travel structure for keyboard keycaps according to claim 1, characterized in that, The PCBA board (2) is fixedly mounted on the keyboard bottom shell (1), the keycap (4) is fixedly mounted on the top of the magnetic axis body (3), and the magnetic axis body (3) is slidably mounted on the PCBA board (2).

3. The adjustable travel structure for keyboard keycaps according to claim 2, characterized in that, The coil (15) is a hollow cylindrical structure, and the magnetic shaft (3) passes through the central hole of the coil (15), and a certain gap is maintained between the magnetic shaft (3) and the coil (15) to ensure that the magnetic shaft (3) can move up and down smoothly.

4. The adjustable travel structure for keyboard keycaps according to claim 3, characterized in that, The permanent magnet (16) has a cylindrical structure, and its bottom surface is flush with the bottom surface of the magnetic shaft (3). The magnetic pole direction of the permanent magnet (16) is consistent with the axial direction of the magnetic shaft (3).

5. The adjustable travel structure for keyboard keycaps according to claim 1, characterized in that, The protective component includes a hinge (13) installed at one end of the keyboard bottom shell (1), and a protective cover (6) is installed on one side of the hinge (13). A sealing strip (14) is fixed to the inner wall of the protective cover (6) and fits against the outer wall of one end of the keyboard bottom shell (1). A locking component is provided at one end of the protective cover (6).

6. The adjustable travel structure for keyboard keycaps according to claim 5, characterized in that, The locking assembly includes a connecting plate (11) installed at the other end of the keyboard bottom shell (1), and a toggle lever (8) is rotatably connected to the connecting plate (11). A locking groove (12) is provided on the toggle lever (8), and a locking rod (9) passing through the locking groove (12) is installed on the outer wall of one end of the keyboard bottom shell (1).

7. The adjustable travel structure for keyboard keycaps according to claim 6, characterized in that, The positioning component (7) includes a positioning frame (702) installed on the sliding end of the potentiometer (5), and connecting rods (705) are fixed at both ends of the positioning frame (702). A T-shaped rod (709) is fixed at one end of each connecting rod (705). A pressure plate (707) is attached to one side of the positioning frame (702), and two through holes (706) are opened on the pressure plate (707) for the T-shaped rod (709) to pass through. A spring (708) is installed at one end of the T-shaped rod (709) and one side of the pressure plate (707). A pressure seat (701) is installed in the middle of the inner wall of one side of the positioning frame (702), and the position of the pressure seat (701) corresponds to the position of the positioning frame (702).

8. The adjustable travel structure for keyboard keycaps according to claim 7, characterized in that, The positioning frame (702) has equally spaced slots (703) on one side, and a card block (704) inserted into the slot (703) is fixed on one side of the clamping plate (707).

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