Rolling type low-friction mouse shell

Abstract

The utility model relates to the technical field of computer input equipment, in particular to a rolling type low-friction mouse shell which comprises an upper shell and a bottom shell, at least four counter bores are formed in the four corners of the bottom face of the bottom shell, universal ball bearings are installed in the counter bores, and the rolling type low-friction mouse shell comprises a shell body, a main ball and an auxiliary ball, preferably, the bottom shell and the universal ball bearing shell are subjected to integrated injection molding to form an integrated structure, a main ball, an auxiliary ball and a dustproof sealing ring are convenient to install, a sliding foot pad of a traditional mouse is replaced with a universal ball bearing structure, resistance is reduced through rolling friction, and flexibility and operation efficiency are improved; the design is particularly suitable for high-precision scenes (such as electronic sports), and wrist fatigue can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of computer input device technology, and in particular to a low-resistance mouse shell structure based on rolling friction, which is suitable for gaming, office and industrial control scenarios. Background Technology

[0002] Traditional mice typically rely on the sliding friction of polytetrafluoroethylene (PTFE) feet for movement; however, this design has the following drawbacks:

[0003] 1. The large contact area with the mouse pad results in higher friction.

[0004] 2. Insufficient mobility, especially in scenarios requiring rapid turning or precise positioning (such as e-sports);

[0005] 3. Prolonged use can easily cause wrist fatigue or even injury due to high friction and continuous force on the wrist.

[0006] 4. While existing trackball mice control cursor movement via a ball bearing, this ball bearing is used for input rather than as a support structure, thus failing to address the friction issue during mouse movement. Therefore, a mouse structural design that can significantly reduce frictional resistance and improve dexterity is urgently needed. Summary of the Invention

[0007] The technical problem solved: Replacing the traditional mouse's sliding feet with a universal ball bearing structure reduces resistance through rolling friction, improving flexibility and operational efficiency. This design is particularly suitable for high-precision scenarios (such as esports) and can reduce wrist fatigue. Unlike trackball mice, the ball bearing in this invention directly supports mouse movement, representing a structural innovation.

[0008] Technical solution: A rolling, low-friction mouse shell, comprising:

[0009] 1. Top shell;

[0010] 2. Bottom shell: At least four countersunk holes are provided at the four corners of the bottom surface. Each countersunk hole includes a coaxial large hole and a bottom hole, wherein the opening of the large hole is flush with the bottom surface of the bottom shell.

[0011] 3. Universal ball bearing: including housing and ball assembly; one end of the housing is a sealed bottom housing, and the other end is provided with a ball mounting hole, with a flange on the outer ring of the hole; the flange is embedded in the countersunk hole of the bottom housing, coaxial with the large hole and flush with the bottom surface of the bottom housing; the ball mounting hole is provided with main balls, auxiliary balls and dustproof sealing rings to achieve sealing and dustproofing.

[0012] 4. Optional integrated design: The bottom shell and the universal ball bearing housing are integrated into one piece, reducing assembly costs.

[0013] Beneficial effects:

[0014] The beneficial effects of this invention are:

[0015] 1. Rolling friction resistance is significantly lower than that of traditional sliding friction;

[0016] 2. Improve mobility and operational precision to adapt to high-demand scenarios such as e-sports;

[0017] 3. Reduces wrist fatigue from prolonged use;

[0018] 4. The integrated design simplifies the structure and enhances reliability. Attached Figure Description

[0019] Figure 1 : Overall schematic diagram of the casing of a scrolling, low-friction mouse;

[0020] Figure 2 Top view of the countersunk hole in the bottom shell;

[0021] Figure 3 Bottom shell countersunk hole top view;

[0022] Figure 4 Top view of the bottom shell with the universal ball bearing installed;

[0023] Figure 5 Bottom view of the universal ball bearing mounted on the bottom shell;

[0024] Figure 6 Bottom view of the integrated design of the bottom shell and universal ball bearing;

[0025] Figure 7 Top view of the integrated design of the bottom shell and universal ball bearing;

[0026] Figure 8 : Bottom view of integrated housing with ball bearings installed;

[0027] Figure 9 : Quarter section view of a universal ball bearing;

[0028] In the diagram: 1. Upper shell; 2. Bottom shell; 201. Bottom surface of bottom shell; 202. Countersunk hole; 2021. Large hole; 2022. Bottom hole; 3. Universal ball bearing; 301. Housing; 3011. Flange; 3012. Sealing bottom shell; 3013. Ball mounting hole; 303. Main ball; 304. Secondary ball; 305. Dustproof sealing ring; 4. Integrated structure. Detailed Implementation

[0029] Example 1

[0030] like Figure 1-9 As shown, this embodiment includes:

[0031] Upper shell (1);

[0032] The bottom shell (2) has at least four countersunk holes (202) at the four corners of its bottom surface (201). Each countersunk hole (202) includes a large hole (2021) and a bottom hole (2022) arranged coaxially. The opening of the large hole (2021) is flush with the bottom surface (201) of the bottom shell.

[0033] The universal ball bearing (3) includes a housing (301) and main balls (303) and auxiliary balls (304) disposed in the housing (301). One end of the housing (301) is a sealed bottom shell (3012), and the other end is provided with a ball mounting hole (3013). A flange (3011) is provided on the outer edge of the ball mounting hole (3013).

[0034] The flange (3011) is embedded in the large hole (2021) of the countersunk hole of the bottom shell, and is coaxial with the large hole and flush with the bottom surface (201) of the bottom shell;

[0035] The ball mounting hole (3013) is provided with a main ball (303), a secondary ball (304) and a dustproof sealing ring (305) in sequence. The main ball (303) protrudes from the outer surface of the ball mounting hole (3013).

[0036] The countersunk holes (202) are symmetrically distributed at the four corners of the bottom surface of the bottom shell (2), and each countersunk hole corresponds to the installation of a universal ball bearing (3).

[0037] The outer diameter of the flange (3011) and the inner diameter of the large hole (2021) form an interference fit, and the diameter of the sealing bottom shell (3012) of the housing (301) is smaller than the inner diameter of the bottom hole (2022) to form a clearance fit.

[0038] The main ball (303) is made of a high-hardness wear-resistant material, preferably tungsten carbide (WC), zirconium oxide ceramic (ZrO2), or glass fiber reinforced nylon (PA66+GF30), with a Rockwell hardness ≥85HRA and a surface roughness Ra≤0.2μm, to reduce the rolling friction coefficient to 0.05-0.1 and adapt to high-frequency sliding scenarios; alternatively, silicon nitride (Si3N4) or alloy steel with a diamond-like carbon (DLC) coating can be used, with a diameter range of 3.5-6.5mm and a height protruding from the outer surface of the ball mounting hole (3013) of 0.8-1.5mm.

[0039] The auxiliary balls (304) are made of low-density corrosion-resistant materials, including but not limited to alumina ceramic (Al2O3), polyether ether ketone (PEEK) or glass fiber reinforced nylon (PA66+GF30), with a diameter tolerance controlled within ±0.02mm. They are used to distribute the radial load of the main balls and avoid local stress concentration. They are arranged in a ring array along the inner wall of the ball mounting hole (3013), with a quantity of 6-8 balls and a diameter of 1 / 7-1 / 3 of the main ball diameter.

[0040] The dustproof sealing ring (305) is made of an elastomer material, preferably silicone rubber (VMQ) or fluororubber (FKM), with a Shore hardness of 50-70A. The lip forms a dynamic seal with the main ball (303). Alternatively, molybdenum disulfide (MoS2) or perfluoropolyether (PFPE) grease can be pre-coated into the ball mounting hole (3013) at a dosage of 0.05-0.1g.

[0041] Example 2

[0042] like Figure 1-9 As shown in this embodiment:

[0043] 1. The bottom shell (2) and the top shell (1) are made of lightweight and high-rigidity engineering plastics, including ABS, PC / ABS alloy or glass fiber reinforced polycarbonate (PC+GF20), with a tensile strength ≥60MPa and a wall thickness of 1.5-2.5mm. The bottom shell (2) and the universal ball bearing housing (301) are integrally injection molded to form an integrated structure (4). The joint is provided with a 0.5-1mm transition radius to improve the structural strength. Universal ball bearing (3) mounting positions are provided at the four corners.

[0044] 2. The ball bearing mounting hole (3013) is directly opened at the countersunk hole (202) position of the bottom shell (2), reducing the number of assembly parts, and the rest of the structure is the same.

[0045] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it. Those skilled in the art can make modifications, equivalent substitutions or improvements within the spirit and principles of this invention, and all such changes should be included within the protection scope of this invention.

Claims

1. A rolling low-friction mouse shell, characterized in that, include: Upper shell (1); lower shell (2), the bottom surface (201) of which is provided with at least four countersunk holes (202) at the four corners, each countersunk hole (202) including a large hole (2021) and a bottom hole (2022) arranged coaxially, the opening of the large hole (2021) being flush with the bottom surface (201) of the lower shell; universal ball bearing (3), including a housing (301) and main balls (303) and auxiliary balls (304) disposed in the housing (301), one end of the housing (301) being a sealed bottom shell (3012), the other end being a sealed bottom shell (3012) and a sealed bottom shell (3012) being a sealed bottom shell (3012) and a sealed bottom shell (3012) being a sealed bottom shell (3012) and a sealed bottom shell (302) being a sealed bottom shell (30 ... A ball bearing mounting hole (3013) is provided, and a flange (3011) is provided on the outer edge of the ball bearing mounting hole (3013); wherein the flange (3011) is embedded in the large hole (2021) of the countersunk hole of the bottom shell, and is coaxially arranged with the large hole and flush with the bottom surface (201) of the bottom shell; a main ball bearing (303), a secondary ball bearing (304) and a dustproof sealing ring (305) are arranged in sequence in the ball bearing mounting hole (3013), and the main ball bearing (303) protrudes out of the outer surface of the ball bearing mounting hole (3013).

2. The rolling low-friction mouse housing according to claim 1, characterized in that, The countersunk holes (202) are symmetrically distributed at the four corners of the bottom surface of the bottom shell (2), and each countersunk hole corresponds to the installation of a universal ball bearing (3).

3. The rolling low-friction mouse housing according to claim 1, characterized in that, The outer diameter of the flange (3011) and the inner diameter of the large hole (2021) form an interference fit, and the diameter of the sealing bottom shell (3012) of the housing (301) is smaller than the inner diameter of the bottom hole (2022) to form a clearance fit.

4. The rolling low-friction mouse housing according to claim 1, characterized in that, The main ball (303) is made of high-hardness wear-resistant material, including tungsten carbide or zirconium oxide ceramic or glass fiber reinforced nylon, with a Rockwell hardness ≥85HRA and a surface roughness Ra≤0.2μm, to reduce the rolling friction coefficient to 0.05-0.1, adapting to high-frequency sliding scenarios; alternatively, silicon nitride or alloy steel with a diamond-like carbon coating can be used, with a diameter range of 3.5-6.5mm and a height protruding from the outer surface of the ball mounting hole (3013) of 0.8-1.5mm.

5. The rolling low-friction mouse housing according to claim 1, characterized in that, The auxiliary balls (304) are made of low-density corrosion-resistant materials, including but not limited to alumina ceramics, polyetheretherketone, or glass fiber reinforced nylon. The diameter tolerance is controlled within ±0.02mm. They are used to distribute the radial load of the main balls and avoid local stress concentration. They are arranged in a ring array along the inner wall of the ball mounting hole (3013), with a quantity of 6-8 balls and a diameter of 1 / 7-1 / 3 of the main ball diameter.

6. The rolling low-friction mouse housing according to claim 1, characterized in that, The dustproof sealing ring (305) is made of an elastomer material, including silicone rubber or fluororubber, with a Shore hardness of 50-70A. The lip forms a dynamic seal with the main ball (303). Alternatively, molybdenum disulfide or perfluoropolyether grease can be pre-coated in the ball mounting hole (3013).

7. The rolling low-friction mouse housing according to claim 1, characterized in that, The bottom shell (2) and the upper shell (1) are made of lightweight, high-rigidity engineering plastics, including ABS, PC / ABS alloy or glass fiber reinforced polycarbonate, with a tensile strength ≥60MPa. The bottom shell (2) is 1.5-2.5mm thick, and the bottom shell (2) and the universal ball bearing housing (301) are integrally injection molded to form an integrated structure (4). The joint is provided with a 0.5-1mm transition radius to improve the structural strength. Universal ball bearing (3) mounting positions are provided at the four corners. The ball mounting hole (3013) is directly opened at the countersunk hole (202) position of the bottom shell (2).

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