A low-noise interferometric fiber laser

Abstract

This utility model relates to the field of fiber lasers, specifically to a low-noise fiber laser, comprising a housing with heat dissipation slots on both sides and an air inlet slot on the back; a positioning frame fixedly connected to the back of the housing, with a fan shroud snapped into its inner wall, a through slot on the right side of the fan shroud, and an axial flow fan fixedly connected to its inner wall; and a positioning mechanism including a positioning rod that passes through and slidably connects to the inner wall of the positioning frame. The positioning mechanism design ensures stable operation of the axial flow fan and significantly reduces the transmission efficiency of its mechanical vibration, effectively avoiding noise caused by resonance between the fan and the housing. This not only achieves low-noise operation of the laser but also stabilizes the optical path system, ensuring the stability of the optical path during laser use.

Description

Technical Field

[0001] This utility model relates to the field of fiber lasers, specifically to a low-noise-interference fiber laser. Background Technology

[0002] A fiber laser is a laser device that uses rare-earth-doped optical fiber as the gain medium. It is powered by a pump source, which causes the activated ions in the fiber to achieve population inversion, thereby generating stimulated emission under the action of a resonant cavity and outputting high-quality laser light.

[0003] To prevent internal components from being damaged by high temperatures, lasers typically have axial fans installed inside for heat dissipation. Axial fans efficiently expel heat from inside the laser through airflow, ensuring that the core components operate stably within a suitable temperature environment.

[0004] However, most current lasers use screws to mount axial flow fans. While screw mounting ensures fan stability, the mechanical vibrations generated during fan operation are transmitted to the laser's housing through this rigid connection. This vibration not only increases laser noise and affects the working environment but can also cause beam directionality fluctuations, leading to decreased laser output accuracy and adversely affecting applications such as high-precision machining and measurement. Therefore, it is essential to invent a low-noise fiber laser to address these issues. Utility Model Content

[0005] The purpose of this invention is to provide a low-noise fiber laser. An elastic spacer separates the fan cover from the outer wall of the housing, preventing the mechanical vibration generated during axial fan operation from being transmitted from the fan cover to the housing. A silicone sleeve separates the fan cover from the positioning frame, preventing the fan cover from transmitting vibration to the positioning frame. A rubber sleeve separates the positioning rod from the inner wall of the limiting hole, preventing the fan cover from transmitting mechanical vibration to the positioning rod. The combination of the elastic spacer, silicone sleeve, and rubber sleeve effectively reduces the vibration transmission efficiency during axial fan operation, thus solving the noise problem caused by the mechanical vibration of the axial fan and the resonance of the housing, while also ensuring the stability of the laser's optical path.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a low-noise interference fiber laser, comprising:

[0007] The housing has heat dissipation grooves on both the left and right sides, and an air inlet groove on the back.

[0008] Positioning frame, the positioning frame is fixedly connected to the back of the housing, the inner wall of the positioning frame is snap-fitted with a fan cover, a through groove is opened on the right side of the fan cover, and an axial flow fan is fixedly connected to the inner wall of the fan cover;

[0009] Positioning mechanism, the positioning mechanism includes a positioning rod, the positioning rod passes through and is slidably connected to the inner wall of the positioning frame, the rod end of the positioning rod extends into the interior of the positioning frame and is provided with an inclined surface, a spring is fixedly connected to the outer wall of the positioning rod, an elastic gasket is fixedly connected to the back of the housing, a silica gel spacer sleeve is fixedly connected to the inner wall of the positioning frame, a limiting hole is opened on one side of the fan cover close to the positioning rod, and a rubber sleeve is fixedly connected to the inner wall of the limiting hole.

[0010] Preferably, the positioning rod is in a "C" - shaped rod structure, and the rod end of the positioning rod is inserted into the inner wall of the limiting hole.

[0011] Preferably, the rubber sleeve is in a rectangular frame structure with both ends open, and the inner diameter of the rubber sleeve matches the outer diameter of the positioning rod.

[0012] Preferably, the left side of the fan cover is in close contact with the elastic gasket, and the outer wall of the fan cover close to the left side is in close contact with the inner wall of the silica gel spacer sleeve.

[0013] Preferably, the spring is sleeved on the outer wall of the positioning rod, and the end of the spring far from the positioning rod is fixedly connected to the outer wall of the positioning frame.

[0014] In the above technical solution, the technical effects and advantages provided by the present utility model:

[0015] In the present utility model, through the design of the positioning mechanism, it can not only ensure the stable operation of the axial flow fan, but also greatly reduce the conduction efficiency of its mechanical vibration, thereby effectively avoiding the noise generated by resonance between the fan and the housing. It not only realizes the low - noise operation of the laser, but also stabilizes the optical path system and ensures the stability of the optical path when the laser is in use. Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall back structure of the present utility model;

[0018] Figure 2 It is an exploded structure schematic diagram of the present utility model;

[0019] Figure 3This utility model Figure 2 A schematic diagram of the side view structure;

[0020] Figure 4 This is a schematic diagram of the overall structure of the fan cover of this utility model;

[0021] Figure 5 This utility model Figure 3 A magnified structural diagram at point A.

[0022] Legend:

[0023] 1. Housing; 2. Positioning frame; 3. Positioning mechanism; 31. Positioning rod; 32. Inclined surface; 33. Spring; 34. Elastic spacer; 35. Silicone spacer; 36. Limiting hole; 37. Rubber sleeve; 4. Heat dissipation groove; 5. Air inlet groove; 6. Fan cover; 7. Through groove; 8. Axial flow fan. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] This utility model provides, for example Figure 1 - Figure 5 The fiber laser with low noise interference shown includes a housing 1, a positioning frame 2, and a positioning mechanism 3;

[0026] Heat dissipation slots 4 are provided on both the left and right sides of the housing 1, and air inlet slots 5 are provided on the back of the housing 1. Air inlet slots 5 can discharge airflow into the interior of the housing 1, and heat dissipation slots 4 are used to dissipate heat from the interior of the housing 1.

[0027] The positioning frame 2 is fixedly connected to the back of the housing 1. The inner wall of the positioning frame 2 is snapped with the fan cover 6. The left side of the fan cover 6 is tightly fitted with the elastic spacer 34, which is made of rubber. The right side of the fan cover 6 has a through groove 7. The outer wall of the fan cover 6 near the left side is tightly fitted with the inner wall of the silicone spacer 35. An axial fan 8 is fixedly connected to the inner wall of the fan cover 6. Through the cooperation of the elastic spacer 34 and the silicone spacer 35, the vibration of the fan cover 6 can be prevented from being transmitted to the housing 1, causing resonance and noise.

[0028] The positioning mechanism 3 includes a positioning rod 31. The positioning rod 31 penetrates and is slidably connected to the inner wall of the positioning frame 2. The rod end of the positioning rod 31 extends into the interior of the positioning frame 2 and is provided with an inclined surface 32. By providing the inclined surface 32, when the blower cover 6 is inserted into the interior of the positioning frame 2, it can push the positioning rod 31, thus eliminating the need to manually pull the positioning rod 31. A spring 33 is fixedly connected to the outer wall of the positioning rod 31. The spring 33 is sleeved on the outer wall of the positioning rod 31. The end of the spring 33 away from the positioning rod 31 is fixedly connected to the outer wall of the positioning frame 2. The elasticity of the spring 33 can drive the positioning rod 31 to slide back to its original position on the inner wall of the positioning frame 2. An elastic gasket 34 is fixedly connected to the back of the housing 1. Through the elastic gasket 34, the blower cover 6 can be separated from the outer wall of the housing 1, thereby preventing the mechanical vibration generated during the operation of the axial flow fan 8 from being transmitted from the blower cover 6 to the housing 1. A silica gel spacer sleeve 35 is fixedly connected to the inner wall of the positioning frame 2. The silica gel spacer sleeve 35 can separate the blower cover 6 from the positioning frame 2 to prevent the blower cover 6 from transmitting vibration to the positioning frame 2. A limiting hole 36 is provided on one side of the blower cover 6 close to the positioning rod 31. A rubber sleeve 37 is fixedly connected to the inner wall of the limiting hole 36.

[0029] As Figure 1 - Figure 3 shown, the positioning rod 31 is in a "C" - shaped rod structure. The rod end of the positioning rod 31 is inserted into the inner wall of the limiting hole 36. By cooperating the positioning rod 31 with the limiting hole 36, the blower cover 6 can be limited inside the positioning frame 2, thus completing the installation of the blower cover 6 and enabling the axial flow fan 8 to operate stably.

[0030] As Figure 4 shown, the rubber sleeve 37 is in a rectangular frame structure with both ends open. The inner diameter of the rubber sleeve 37 matches the outer diameter of the positioning rod 31. After the positioning rod 31 is inserted into the interior of the limiting hole 36, the rubber sleeve 37 can separate the positioning rod 31 from the inner wall of the limiting hole 36, preventing the blower cover 6 from transmitting mechanical vibration to the positioning rod 31.

[0031] The working principle of this utility model is as follows: When installing the fan cover 6, first, position the left side of the fan cover 6 towards the air inlet slot 5, then insert the fan cover 6 into the positioning frame 2. Simultaneously, when the fan cover 6 contacts the inclined surface 32 during insertion, the left side of the fan cover 6 will press against the inclined surface 32, pushing the positioning rod 31. At this time, the positioning rod 31 will slide on the inner wall of the positioning frame 2 and stretch the spring 33, causing the end of the positioning rod 31 to gradually move out of the positioning frame 2. Meanwhile, as the fan cover 6 continues to be inserted, the limiting hole 36 will gradually approach the end of the positioning rod 31. When the limiting hole 36 and the end of the positioning rod 31 are completely aligned, the positioning rod 31 is released from the pressure of the fan cover 6. At this time, the stretched spring 33 will return to its original position, and the spring 33 will drive the positioning rod 31 to slide back to its original position on the inner wall of the positioning frame 2. After the positioning rod 31 slides back to its original position, it will be inserted into the rubber sleeve 37. At this time, the fan cover 6 can be limited inside the positioning frame 2 by the limiting hole 36 and the positioning rod 31, thereby completing the installation of the fan cover 6. When the laser is running, the axial flow fan 8 is started to draw external air into the fan cover 6 through the through groove 7. At the same time, the axial flow fan 8 will blow the airflow into the housing 1 through the air inlet groove 5. After the airflow enters the housing 1, it will be discharged outward from the heat dissipation groove 4, thereby accelerating the air circulation efficiency inside the housing 1 and thus dissipating heat from the equipment inside the housing 1.

[0032] After the fan cover 6 is installed inside the positioning frame 2, the elastic spacer 34 can separate the fan cover 6 from the outer wall of the housing 1, thereby preventing the mechanical vibration generated during the operation of the axial flow fan 8 from being transmitted from the fan cover 6 to the housing 1. At the same time, the silicone spacer 35 can separate the fan cover 6 from the positioning frame 2, preventing the fan cover 6 from transmitting vibration to the positioning frame 2. After the positioning rod 31 is inserted into the limiting hole 36, the rubber sleeve 37 can separate the positioning rod 31 from the inner wall of the limiting hole 36, preventing the fan cover 6 from transmitting mechanical vibration to the positioning rod 31. The elastic spacer 34, together with the silicone spacer 35 and the rubber sleeve 37, can achieve a soft fixation between the fan cover 6 and the housing 1, so as to prevent the vibration generated by the operation of the fan from being transmitted to the housing 1, causing resonance, increasing noise, and affecting the stability of the optical path.

[0033] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A low-noise-interference fiber laser, characterized in that, Comprising: A housing (1), heat dissipation grooves (4) are provided on both the left and right sides of the housing (1), and an air intake groove (5) is provided on the back surface of the housing (1); A positioning frame (2), the positioning frame (2) is fixedly connected to the back surface of the housing (1), a blower cover (6) is clamped to the inner wall of the positioning frame (2), a through groove (7) is provided on the right side of the blower cover (6), and an axial flow fan (8) is fixedly connected to the inner wall of the blower cover (6); A positioning mechanism (3), the positioning mechanism (3) includes a positioning rod (31), the positioning rod (31) penetrates and is slidably connected to the inner wall of the positioning frame (2), the rod end of the positioning rod (31) extends into the positioning frame (2) and is provided with an inclined surface (32), a spring (33) is fixedly connected to the outer wall of the positioning rod (31), an elastic gasket (34) is fixedly connected to the back surface of the housing (1), a silica gel spacer sleeve (35) is fixedly connected to the inner wall of the positioning frame (2), a limiting hole (36) is provided on the side of the blower cover (6) close to the positioning rod (31), and a rubber sleeve (37) is fixedly connected to the inner wall of the limiting hole (36).

2. The low-noise interference fiber laser according to claim 1, characterized in that: The positioning rod (31) is in a "C" - shaped rod structure, and the rod end of the positioning rod (31) is inserted into the inner wall of the limiting hole (36).

3. A low-noise interference fiber laser according to claim 1, characterized in that: The rubber sleeve (37) is in a rectangular frame structure with both ends open, and the inner diameter of the rubber sleeve (37) matches the outer diameter of the positioning rod (31).

4. A low-noise interference fiber laser according to claim 1, characterized in that: The left side of the blower cover (6) is in close contact with the elastic gasket (34), and the outer wall of the blower cover (6) close to the left side is in close contact with the inner wall of the silica gel spacer sleeve (35).

5. A low-noise interference fiber laser according to claim 1, characterized in that: The spring (33) is sleeved on the outer wall of the positioning rod (31), and the end of the spring (33) away from the positioning rod (31) is fixedly connected to the outer wall of the positioning frame (2).

Images