Mute mechanical shaft

Abstract

The utility model discloses a mute mechanical shaft, which relates to the technical field of mechanical shaft silencing, and comprises a mechanical shaft main body, the first silencing assembly and the second silencing assembly are used for conducting silencing and noise reduction on the mechanical shaft body; the first silencing assembly and the second silencing assembly are both arranged in the mechanical shaft body, the mechanical shaft body comprises an upper cover, a shaft core and a lower cover, a shaft rod is fixedly connected to the bottom of the shaft core, a spring is arranged on the outer wall of the circumference of the shaft rod, and the spring is arranged between the upper cover and the lower cover. The first silencing assembly comprises a silencing column fixedly connected to the interior of the lower cover, the spring is connected to the circumferential outer wall of the silencing column in a sleeved mode, and a silica gel ring is arranged at the end, located in the silencing column, of the shaft rod. Therefore, the situation that large resonance noise is generated due to direct contact between the axis and the bottom face of the lower cover is avoided.

Description

Technical Field

[0001] This utility model relates to the field of mechanical shaft noise reduction technology, and in particular to a silent mechanical shaft. Background Technology

[0002] Silent mechanical switches are a special type of mechanical keyboard switch that retains the unique feel and feedback of mechanical switches while reducing the noise generated when the key is actuated and rebounded through special design.

[0003] Currently, most silent mechanical switches on the market have direct contact between the spindle and the bottom surface, resulting in a rigid contact between the spindle and the bottom cover without any cushioning. This leads to significant resonance and causes noise during use. Therefore, a silent mechanical switch is urgently needed to solve these problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a silent mechanical shaft. Its advantages lie in the addition of silicone and rubber rings at the contact point between the shaft and the sound-absorbing column, thereby preventing the shaft from directly contacting the bottom surface of the lower cover and generating significant resonance noise.

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

[0006] A silent mechanical shaft, comprising:

[0007] Mechanical shaft body;

[0008] A first noise reduction component and a second noise reduction component are used to reduce noise in the mechanical shaft body; both the first noise reduction component and the second noise reduction component are disposed inside the mechanical shaft body, wherein the first noise reduction component includes a noise reduction column to buffer the impact of the shaft of the mechanical shaft body, and the second noise reduction component includes a noise reduction hole to buffer the airflow when the shaft moves.

[0009] Through the above technical solutions, the overall design of the mechanical shaft can effectively reduce the noise generated during use, providing users with a quieter user experience.

[0010] The present invention is further configured such that the mechanical shaft body includes an upper cover, a shaft core, and a lower cover, a shaft rod is fixedly connected to the bottom of the shaft core, a spring is provided on the outer circumference of the shaft rod, and the spring is disposed between the upper cover and the lower cover.

[0011] The above technical solutions enable the spring to buffer and reset during the pressing and rebounding process of the shaft core, ensuring the normal use of the mechanical shaft.

[0012] The present invention is further configured such that the first noise reduction component includes a noise reduction column fixedly connected inside the lower cover, the spring is sleeved on the outer circumferential wall of the noise reduction column, and a silicone ring is provided at one end of the shaft located inside the noise reduction column.

[0013] Through the above technical solution, when the shaft moves inside the muffler, the silicone ring can prevent the shaft from making direct hard contact with the muffler, thus reducing the noise generated by the collision.

[0014] The present invention is further configured such that an installation groove is formed on the outer circumference of one end of the shaft, and the silicone ring is snapped into the inside of the installation groove.

[0015] The above technical solutions ensure the stability of the silicone ring on the shaft, enabling it to consistently provide cushioning and noise reduction during shaft movement.

[0016] The present invention is further configured such that the sound-absorbing column includes an upper column portion and a lower column portion, and the upper column portion has an internal movable cavity.

[0017] Through the above technical solutions, the movable cavity provides space for the movement of the shaft, ensuring that the shaft can move smoothly up and down within the silencer column.

[0018] The present invention is further configured such that a sound-absorbing cavity is provided inside the lower column, and the cross-section of the sound-absorbing cavity is conical.

[0019] Through the above technical solution: when the shaft moves downward and compresses the air in the silencing cavity, this conical structure can buffer and dampen the airflow, consume some energy, and thus reduce the noise generated by the airflow.

[0020] The present invention is further configured such that the second noise reduction component includes a cavity formed inside the lower column, and the inner circumferential wall of the noise reduction cavity is provided with noise reduction holes distributed in a circular pattern at equal intervals, and the noise reduction holes are connected to the cavity.

[0021] Through the above technical solution: when the shaft squeezes the air in the silencing cavity, the air enters the cavity through the silencing hole, changing the air propagation path and space, and further weakening the propagation of noise.

[0022] The present invention is further configured such that a rubber ring is fixedly connected to the inner circumferential wall of the movable cavity, and the inner diameter of the rubber ring is the same as the diameter of the silicone ring.

[0023] Through the above technical solution, when the silicone ring at the end of the shaft approaches the rubber ring, the two can cooperate stably, better buffering the impact force of the shaft and avoiding hard contact between the shaft and the muffler column, which would generate a lot of noise.

[0024] The beneficial effects of this utility model are as follows:

[0025] 1. In this utility model, a silicone ring and a rubber ring are added to the contact part between the shaft and the muffler column to avoid hard contact between the shaft and the muffler column. During the pressing and rebound of the shaft core, the silicone ring and the rubber ring can effectively buffer the impact force of the shaft, reduce collision noise, and prevent large resonance noise caused by hard contact.

[0026] 2. In this utility model, since the cross-section of the silencing cavity at the lower part of the silencing column is conical, when the shaft moves down and squeezes the air in the silencing cavity, this structure can buffer and dampen the airflow, consume some energy, and thus reduce the noise generated by the airflow.

[0027] 3. In this utility model, the silencing holes opened on the inner wall of the silencing cavity are connected to the cavity inside the lower column, thereby changing the air propagation path and space, further weakening the propagation of noise, achieving multi-faceted noise reduction and providing users with a quieter user experience. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall front structure of a silent mechanical shaft proposed in this utility model.

[0029] Figure 2 This is a schematic diagram of the overall half-sectional structure of a silent mechanical shaft proposed in this utility model;

[0030] Figure 3 This utility model proposes a silent mechanical shaft. Figure 2 Enlarged structural diagram at point A;

[0031] Figure 4 This is a schematic diagram of the overall state of a silent mechanical shaft core after being pressed, as proposed in this utility model.

[0032] In the diagram: 1. Top cover; 2. Shaft core; 3. Bottom cover; 4. Spring; 5. Shaft rod; 7. Silicone ring; 8. Mounting groove; 9. Silencing column; 901. Upper column part; 902. Lower column part; 10. Cavity; 11. Silencing hole; 12. Rubber ring; 13. Movable cavity; 14. Silencing cavity. Detailed Implementation

[0033] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0034] Reference Figures 1-4 A silent mechanical shaft, comprising:

[0035] Mechanical shaft body;

[0036] A first noise reduction component and a second noise reduction component are used to reduce noise in the main body of the mechanical shaft. Both the first noise reduction component and the second noise reduction component are disposed inside the main body of the mechanical shaft. The first noise reduction component includes a noise reduction column 9 that buffers the impact of the shaft 5 of the main body of the mechanical shaft, and the second noise reduction component includes a noise reduction hole 11 that buffers the airflow when the shaft 5 moves. This silent mechanical shaft has the first noise reduction component and the second noise reduction component disposed inside the main body of the mechanical shaft. The overall design can effectively reduce the noise generated by the mechanical shaft during use and provide users with a quieter user experience.

[0037] To ensure the proper functioning of the mechanical shaft, refer to... Figures 1-2 The mechanical shaft body includes an upper cover 1, a shaft core 2, and a lower cover 3. A shaft rod 5 is fixedly connected to the bottom of the shaft core 2. A spring 4 is provided on the outer circumference of the shaft rod 5. The spring 4 is located between the upper cover 1 and the lower cover 3, so that the spring 4 can play a buffering and resetting role during the pressing and rebounding process of the shaft core 2.

[0038] To reduce noise during the use of the mechanical shaft, refer to Figures 2-3 The first noise reduction component includes a noise reduction column 9 fixedly connected inside the lower cover 3, a spring 4 sleeved on the outer circumference of the noise reduction column 9, and a silicone ring 7 provided at one end of the shaft 5 located inside the noise reduction column 9. When the shaft 5 moves inside the noise reduction column 9 and comes into contact with the silicone ring 7, the material of the silicone ring 7 can prevent the shaft 5 from making direct hard contact with the noise reduction column 9, effectively reducing the noise generated by the collision and achieving noise reduction of the mechanical shaft.

[0039] To achieve stable installation of the silicone ring 7, refer to... Figures 2-3 A mounting groove 8 is provided on the outer circumference of one end of the shaft 5. The silicone ring 7 is snapped into the inside of the mounting groove 8. By providing a mounting groove 8 that matches the silicone ring 7 at one end of the shaft 5, the silicone ring 7 can be easily and quickly installed at one end of the shaft 5. This also effectively ensures the stability of the silicone ring 7 on the shaft 5. When the silicone ring 7 is installed at one end of the shaft 5, the silicone ring 7 can always play a role in buffering and noise reduction during the movement of the shaft 5.

[0040] To ensure that shaft 5 can move smoothly up and down within the muffler column 9, refer to Figures 2-3 The muffler 9 includes an upper column 901 and a lower column 902. The upper column 901 has a movable cavity 13 inside. When the shaft core 2 is subjected to downward pressing force, it will drive the shaft rod 5 below it to move downward together. Since one end of the shaft rod 5 is located inside the movable cavity 13, the movable cavity 13 can provide space for the movement of the shaft rod 5, ensuring the normal pressing and rebound of the entire shaft core 2.

[0041] To reduce noise generated by airflow, refer to Figures 2-3The lower column 902 has a sound-absorbing cavity 14 inside. The cross-section of the sound-absorbing cavity 14 is conical. When the shaft 5 moves downward and compresses the air in the sound-absorbing cavity 14, this conical structure can buffer and dampen the airflow, consume some energy, and thus reduce the noise generated by the airflow.

[0042] To further improve the noise reduction effect on the mechanical shaft, refer to Figures 2-3 The second noise reduction assembly includes a cavity 10 inside the lower column 902. The inner circumferential wall of the noise reduction cavity 14 is provided with noise reduction holes 11 that are evenly distributed in a circular pattern. The noise reduction holes 11 are connected to the cavity 10. When the shaft 5 compresses the air in the noise reduction cavity 14, the air enters the cavity 10 through the noise reduction holes 11, which changes the propagation path and space of the air and further weakens the propagation of noise.

[0043] To ensure a stable fit between the silicone ring 7 and the rubber ring 12, refer to... Figures 2-3 A rubber ring 12 is fixedly connected to the inner circumference of the active cavity 13. The inner diameter of the rubber ring 12 is the same as the diameter of the silicone ring 7. When the silicone ring 7 at the end of the shaft 5 approaches the rubber ring 12, the two can cooperate stably to better buffer the impact force of the shaft 5 and avoid the shaft 5 from making hard contact with the muffler 9 to generate a lot of noise.

[0044] Working principle: When the shaft core 2 is pressed, the shaft core 2 drives the shaft rod 5 to move downward. The shaft rod 5 compresses the spring 4. At the same time, the silicone ring 7 at the end of the shaft rod 5 gradually approaches the rubber ring 12 in the movable cavity 13 of the upper column 901 of the muffler 9. Since the silicone ring 7 and the rubber ring 12 are soft, they can effectively buffer the impact force of the shaft rod 5 when they come into contact, avoiding the shaft rod 5 from making hard contact with the muffler 9 and generating a lot of noise. As the shaft rod 5 continues to move downward, the spring 4 is further compressed, and the shaft rod 5 moves in the movable cavity 13 in the muffler 9. When the finger releases the shaft core 2, the spring 4 rebounds, pushing the shaft rod 5 and the shaft core 2 to return to their original position. During this process, the silicone ring 7 and the rubber ring 12 also play a buffering role, reducing the collision noise generated by the relative movement between the shaft rod 5 and the muffler 9.

[0045] Furthermore, when the shaft 5 moves downward, it compresses the air in the silencing cavity 14 of the lower column 902 of the silencing column 9, causing the air to enter the cavity 10 through the silencing hole 11. Since the cross-section of the silencing cavity 14 is conical, this structure can buffer and dampen the airflow during the air compression process, consuming some energy and thus reducing the noise generated by the airflow. At the same time, the arrangement of the silencing hole 11 and the cavity 10 changes the air propagation path and space, further weakening the propagation of noise, thereby achieving a multi-faceted noise reduction effect on the noise generated by the mechanical shaft during pressing and rebound.

[0046] 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. A silent mechanical shaft, characterized in that, include: Mechanical shaft body; A first noise reduction component and a second noise reduction component are used to reduce noise in the mechanical shaft body. Both the first noise reduction component and the second noise reduction component are disposed inside the mechanical shaft body. The first noise reduction component includes a noise reduction column (9) to buffer the impact of the shaft (5) of the mechanical shaft body. The second noise reduction component includes a noise reduction hole (11) to buffer the airflow when the shaft (5) moves.

2. The silent mechanical shaft according to claim 1, characterized in that, The mechanical shaft body includes an upper cover (1), a shaft core (2) and a lower cover (3). A shaft rod (5) is fixedly connected to the bottom of the shaft core (2). A spring (4) is provided on the outer circumference of the shaft rod (5). The spring (4) is located between the upper cover (1) and the lower cover (3).

3. A silent mechanical shaft according to claim 2, characterized in that, The first noise reduction assembly includes a noise reduction column (9) fixedly connected inside the lower cover (3), a spring (4) sleeved on the outer circumferential wall of the noise reduction column (9), and a silicone ring (7) provided at one end of the shaft (5) located inside the noise reduction column (9).

4. A silent mechanical shaft according to claim 3, characterized in that, The shaft (5) has an installation groove (8) on its outer circumference at one end, and the silicone ring (7) is engaged inside the installation groove (8).

5. A silent mechanical shaft according to claim 4, characterized in that, The silencing column (9) includes an upper column (901) and a lower column (902), and the upper column (901) has an internal movable cavity (13).

6. A silent mechanical shaft according to claim 5, characterized in that, The lower column (902) has a sound-absorbing cavity (14) inside, and the cross-section of the sound-absorbing cavity (14) is conical.

7. A silent mechanical shaft according to claim 6, characterized in that, The second noise reduction assembly includes a cavity (10) formed inside the lower column (902). The inner circumferential wall of the noise reduction cavity (14) is provided with noise reduction holes (11) that are evenly distributed in a circular pattern. The noise reduction holes (11) are connected to the cavity (10).

8. A silent mechanical shaft according to claim 7, characterized in that, A rubber ring (12) is fixedly connected to the inner circumference of the movable cavity (13), and the inner diameter of the rubber ring (12) is the same as the diameter of the silicone ring (7).

Images