Sound temperature optimization structure for magnetic axis keyboard

Abstract

The utility model discloses a sound temperature optimization structure for a magnetic axis keyboard, which comprises a mainboard PCBA, lamp holes, positioning holes and circular holes, the inner side of the mainboard PCBA is provided with the lamp holes at equal intervals, the inner side of the mainboard PCBA is provided with the positioning holes at equal intervals, the inner side of the mainboard PCBA is provided with the circular holes at equal intervals, the diameter of the circular holes is 0.2 mm-8. 5mm, and the error is + / -0.1 mm; the opening depth of the circular opening is 0.2 mm to 1.5 mm, and the error is + / -0.1 mm; the hole position of the circular hole is located between two positioning holes in the main board PCBA; the hole position of the circular hole is located on the front face of the main board PCBA, namely the face making contact with a magnetic shaft, and the bottom of the circular hole cannot be opened. According to the sound temperature optimization structure for the magnetic axis keyboard, under the condition that the structure, the installation mode and material selection of an existing magnetic axis keyboard are not changed, fine machining is conducted on the main board PCBA, and therefore sound production and temperature influence of the magnetic axis keyboard are improved under the condition that the precision of the magnetic axis keyboard is not affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to keyboard optimization technical field, concretely is a kind of sound temperature optimization structure for magnetic shaft keyboard. BACKGROUND

[0002] With the vigorous development of game e-sports, game peripherals also usher in some changes, in recent two years, magnetic shaft keyboard based on hall sensor is more and more loved by consumers, magnetic shaft keyboard has the incomparable advantage of mechanical keyboard;

[0003] 1: ultra-low delay and high-precision trigger

[0004] Magnetic shaft keyboard adopts magnetic induction technology, and the touch stroke can be finely adjusted to 0.005mm, far more than traditional mechanical keyboard;

[0005] 2: higher refresh rate return rate lower delay

[0006] Can reach 8k refresh rate and less than 0.1ms wired delay;

[0007] 3: more open custom properties

[0008] Magnetic shaft has RT (dynamic touch stroke), DKS (double key binding) and other functions, a key can bind up to 4 different key values according to stroke;

[0009] But the existing market magnetic shaft keyboard still has certain technical defects;

[0010] 1. Precision sensitivity structure requirement

[0011] Magnetic shaft adopts hall sensor magnetic field induction trigger mechanism, and its working precision is extremely sensitive to physical deformation;Therefore, 1.6mm thick PCB board (thicker than traditional mechanical keyboard 1.2mm, increased by 33%) is used, and aluminum alloy rigid metal positioning plate is matched, compared with traditional glass / PC plastic positioning plate, its deformation rate is reduced by about 70%, but the material rigidity is increased by more than 5 times;

[0012] 2. Acoustic performance compromise

[0013] Rigid structure suppresses deformation at the same time, resulting in significant changes in acoustic characteristics: the knocking sound frequency domain moves up about 1200Hz, the sound pressure level peak increases by 8-12dB, produces sharp metal resonance sound, compared with the comfortable knocking sound frequency of 500-2000Hz of traditional mechanical keyboard, the high-frequency noise (3000-4500Hz) of magnetic shaft keyboard makes the subjective listening pleasure decrease by more than 40%;

[0014] 3. The influence of temperature drift on the performance of magnetic shaft keyboard

[0015] The Hall sensor output signal will deviate with temperature change, resulting in magnetic field detection sensitivity drift; actual measurement shows that the triggering height error of the Hall sensor without temperature compensation can reach ±0.2 mm when the temperature difference is 50℃;

[0016] 4. Signal stability degradation

[0017] Temperature fluctuation can cause sensor reference voltage offset, resulting in signal noise ratio (SNR) decline. Under extreme working conditions (such as continuous e-sports operation), the signal-to-noise ratio of an unoptimized Hall sensor may be attenuated by more than 30%, resulting in an increase in false triggering rate.

[0018] In view of the above problems, we make innovative design on the basis of the original sound temperature optimization structure for magnetic shaft keyboard. Content of the utility model

[0019] The utility model discloses a sound temperature optimization structure for magnetic shaft keyboard to solve the structure demand of precision sensitivity of the existing magnetic shaft keyboard, the compromise of acoustic performance, the influence of temperature drift on the performance of magnetic shaft keyboard, the problem of signal stability degradation in the background art.

[0020] In order to realize the above object, the utility model provides the following technical scheme: a sound temperature optimization structure for magnetic shaft keyboard, including mainboard PCBA, lamp hole, positioning hole and circular opening, the lamp hole is equidistantly arranged on the inner side of mainboard PCBA, and the positioning hole is equidistantly arranged on the inner side of mainboard PCBA, the circular opening is equidistantly arranged on the inner side of mainboard PCBA.

[0021] Preferably, the diameter of the circular opening is 0.2mm-8.5mm, and the error is ±0.1mm.

[0022] Preferably, the depth of the circular opening is 0.2mm-1.5mm, and the error is ±0.1mm.

[0023] Preferably, the circular opening is located between the two positioning holes on the mainboard PCBA.

[0024] Preferably, the circular opening is located on the front surface of the mainboard PCBA, i.e. the surface in contact with the magnetic shaft, and the bottom of the circular opening cannot be punched through.

[0025] Preferably, a square opening is formed on the inner side of the mainboard PCBA.

[0026] Compared with the prior art, the sound temperature optimization structure for magnetic shaft keyboard has the beneficial effects that:

[0027] Without changing the existing magnetic shaft keyboard structure, installation mode and material selection, the main board PCBA is slightly processed, so that the sound and temperature influence of the magnetic shaft keyboard are improved without affecting the accuracy of the magnetic shaft keyboard. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the main board PCBA of the utility model;

[0029] Figure 2 It is a schematic diagram of the front structure of the main board PCBA of the utility model;

[0030] Figure 3 It is a schematic diagram of the three-dimensional structure of the main board PCBA of the utility model; Figure 1 It is a schematic diagram of the enlarged structure of the A place in the utility model;

[0031] Figure 4 It is a schematic diagram of the enlarged structure of the B place in the utility model; Figure 2 It is a schematic diagram of the enlarged structure of the B place in the utility model;

[0032] Figure 5 It is a schematic diagram of the local structure of the main board PCBA of the utility model;

[0033] Figure 6 It is a schematic diagram of the three-dimensional structure of the circular opening of the utility model.

[0034] In the figure: 1, main board PCBA; 2, lamp hole; 3, positioning hole; 4, circular opening; 5, square opening. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0036] Please refer to Figures 1-6 , the utility model provides a kind of technical scheme: a kind of sound temperature optimization structure for magnetic shaft keyboard, comprising:

[0037] Embodiment one: as shown in the technical scheme in Figures 1-4 , Figure 6 The utility model provides a kind of technical scheme: a kind of sound temperature optimization structure for magnetic shaft keyboard, discloses: main board PCBA, lamp hole 2, positioning hole 3 and circular opening 4, lamp hole 2 is equidistantly provided in the inside of main board PCBA, and positioning hole 3 is equidistantly provided in the inside of main board PCBA, the inside of main board PCBA is equidistantly provided with circular opening 4;

[0038] The diameter of the circular hole 4 is 0.2mm-8.5mm with an error of ±0.1mm; the depth of the circular hole 4 is 0.2mm-1.5mm with an error of ±0.1mm; the hole position of the circular hole 4 is between the two positioning holes 3 on the main board PCBA; the hole position of the circular hole 4 is on the front of the main board PCBA, i.e., the surface in contact with the magnetic shaft, and the bottom of the circular hole 4 cannot be punched through;

[0039] 1. Optimization of sound production

[0040] Reducing high frequency and increasing low frequency, filtering fine noise, sound impedance difference: the sound impedance of solid plate materials (such as metal, wood) is much higher than that of air. Generally speaking, the smaller the impedance, the higher the sound pressure response, which makes the low frequency better enhanced and the sound more robust; when the impedance is larger, the bass will decrease and the treble can be better expressed. The role of the circular hole 4: the hole reduces the overall density and stiffness of the plate, making its sound impedance closer to air (similar to "gradient transition"), reducing reflection loss and improving sound energy transmission to air. Vibration mode optimization: enhanced sound radiation, mass reduction and stiffness adjustment: punching reduces the mass of the plate while locally weakening the stiffness, making it easier to excite vibration (similar to "lightweight structure"); increased vibration freedom: the hole edge forms new vibration nodes and anti-nodes, producing more high-frequency vibration modes, widening the sound wave frequency range and enhancing sound radiation efficiency;

[0041] Optimization of sound wave propagation path

[0042] Diffraction and scattering: the circular hole 4 hole makes the sound wave diffract and diffuse to a farther area (especially more obvious for high-frequency sound waves) while bypassing obstacles; directional radiation effect: regularly arranged circular holes 4 can form an acoustic metasurface to guide sound waves to propagate in a specific direction, reducing energy dispersion;

[0043] Example verification

[0044] Instrument design: musical instruments such as xylophones and bells often optimize sound radiation through slotting or punching;

[0045] Engineering noise reduction: porous materials are used for sound absorption, but if the distribution of the holes matches the sound waves, they can also enhance sound propagation in a specific direction;

[0046] 2. Optimization of temperature

[0047] Thinner motherboard PCBAs typically offer better heat dissipation because they have lower dielectric constants. Since the speed of signal propagation in a medium is inversely proportional to the square root of its dielectric constant, thinner boards provide faster signal transmission speeds and better heat dissipation. Thermal resistance significantly impacts heat transfer and device performance; its value is related to material properties, thickness, and area. A lower thermal resistance means a smaller temperature difference across the material under the same heat output, indicating a stronger ability to conduct heat. The circular opening 4 is designed to transfer heat more efficiently. Its function is as follows: The opening is located directly above the Hall sensor, which makes the plate thickness at this location only 0.1mm±0.02mm. Compared with a plate thickness of 1.6mm, the thermal resistance is reduced by 20%-40%, effectively improving heat dissipation efficiency. The diameter of the opening is about 30% larger than that of the Hall sensor (which is generally 1.6mm for magnetic axis keyboards), improving heat dissipation efficiency by about 15%-40%. The opening can effectively suppress the negative impact of temperature drift under extreme conditions (such as continuous gaming operation).

[0048] Example 2: Figure 2 , Figure 5 The present invention provides a technical solution: a sound temperature optimization structure for magnetic axis keyboards, which discloses that: a square opening 5 is provided on the inner side of the motherboard PCBA;

[0049] The shape of the opening in this structure includes, but is not limited to, circles, ovals, squares, polygons (such as rectangles and hexagons), irregular shapes, or combinations thereof, and can be selected according to actual needs or keyboard structure adaptability.

[0050] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0051] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sound temperature optimization structure for a magnetic shaft keyboard, comprising a main board PCBA (1), a lamp hole (2), a positioning hole (3) and a circular opening (4), characterized in that, The mainboard PCBA (1) is equidistantly provided with a lamp hole (2) on the inner side, and equidistantly provided with a positioning hole (3) on the inner side. The circular hole (4) is located on the front of the mainboard PCBA (1), that is, the surface in contact with the magnetic shaft, and the bottom of the circular hole (4) cannot be punched through.

2. The sound temperature optimization structure for a magnetic axis keyboard according to claim 1, wherein: The diameter of the circular hole (4) is 0.2mm-8.5mm, with an error of ±0.1mm.

3. The sound temperature optimization structure for a magnetic keyboard according to claim 1, wherein: The depth of the circular hole (4) is 0.2mm-1.5mm, with an error of ±0.1mm.

4. The sound temperature optimization structure for a magnetic keyboard according to claim 1, wherein: The circular hole (4) is located between the two positioning holes (3) on the mainboard PCBA (1).

5. The sound temperature optimization structure for a magnetic keyboard according to claim 1, wherein: The mainboard PCBA (1) is provided with a square hole (5) on the inner side.

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