Photoelectric detector cooling fin

Abstract

The utility model relates to the technical field of photoelectric detectors, and discloses a photoelectric detector radiating fin which comprises a shell, the outer wall of the shell is fixedly connected with supporting legs, the shell is provided with a dismounting mechanism, the two sides of the dismounting mechanism are provided with auxiliary mounting mechanisms, and the outer wall of a mounting frame extrudes and moves a positioning rod. Meanwhile, a second spring is extruded, the second spring rebounds and resets, so that a positioning rod is pushed to move outwards in a reset mode, the outer wall of the positioning rod is clamped to the inner wall of a positioning hole at the moment, the installation process of the installation frame is completed, and the installed installation frame can be driven to move downwards through mutual cooperation of a first spring, a sliding rod and a sliding block; therefore, the cooling fin can be driven to move downwards, the bottom end of the cooling fin can be tightly attached to the back face of a chip in the detector, the cooling efficiency is improved, welding or glue fixing is not needed through the installation mode, and meanwhile follow-up maintenance is not affected.

Description

Technical Field

[0001] This utility model belongs to the field of photoelectric detector technology, specifically, it relates to a heat sink for a photoelectric detector. Background Technology

[0002] The principle of photodetectors is based on the change in electrical conductivity of the irradiated material caused by radiation. Photodetectors have wide applications in various fields of military and national economy. In the visible or near-infrared band, they are mainly used for radiation measurement and detection, industrial automatic control, and photometric measurement; in the infrared band, they are mainly used for missile guidance, infrared thermal imaging, and infrared remote sensing.

[0003] During operation, photodetectors generate heat due to photoelectric conversion and other processes. However, most existing heat sinks are fixed by welding or gluing, which greatly affects the installation efficiency of the heat sink and makes subsequent maintenance difficult.

[0004] In view of this, this utility model is hereby proposed. Utility Model Content

[0005] To address the heat generated during the photoelectric conversion process in photodetectors, most existing heat sinks are fixed using welding or adhesive methods, which significantly reduces installation efficiency and hinders subsequent maintenance. The basic concept of this invention is as follows:

[0006] A heat sink for a photodetector includes a housing;

[0007] The outer wall of the housing is fixedly connected to a support foot, and the housing is provided with a disassembly and assembly mechanism. Auxiliary installation mechanisms are provided on both sides of the disassembly and assembly mechanism, and the disassembly and assembly mechanism includes a sliding rod.

[0008] The inner wall of the housing is provided with a sliding groove. The upper and lower ends of the sliding rod are fixedly connected to the inner wall of the sliding groove. A slider is slidably connected to the outer wall of the sliding rod. A first spring is fixedly connected to the bottom end of the slider. The end of the first spring away from the slider is fixedly connected to the inner wall of the sliding groove. A sliding hole is provided on the outer wall of the slider. A second spring is fixedly connected to the inner wall of the sliding hole. A positioning rod is fixedly connected to the end of the second spring away from the inner wall of the sliding hole. A first movable groove is provided at the top of the slider. A connecting rod is slidably arranged on the inner wall of the first movable groove. The end of the connecting rod away from the first movable groove is fixedly connected to the outer wall of the positioning rod. A pull rod is fixedly connected to the end of the connecting rod away from the positioning rod. A mounting frame is engaged with the outer wall of the positioning rod. A heat sink is installed on the inner wall of the mounting frame. A positioning hole is provided on the outer wall of the mounting frame. The outer wall of the positioning rod is engaged with the inner wall of the positioning hole.

[0009] In a preferred embodiment of this utility model, the auxiliary installation mechanism includes a fixing rod fixedly connected to the housing, a threaded sleeve fixedly connected to the end of the fixing rod away from the housing, a screw threadedly connected to the inner wall of the threaded sleeve, a rotating sleeve fixedly connected to the outer wall of the screw, a limit plate fixedly connected to the end of the screw away from the threaded sleeve, and a locking rod fixedly connected to the bottom end of the support foot.

[0010] In a preferred embodiment of this utility model, there are four positioning rods, which are distributed symmetrically in pairs inside the housing, and the top of each positioning rod is provided with an inclined surface.

[0011] In a preferred embodiment of this utility model, the outer wall of the slider is fitted with the inner wall of the groove opened in the inner wall of the housing, and the outer wall of the positioning rod is fitted with the inner wall of the sliding hole opened in the outer wall of the slider.

[0012] In a preferred embodiment of this utility model, the inner walls of the first movable groove and the second movable groove are properly fitted to the outer wall of the connecting rod.

[0013] In a preferred embodiment of this utility model, there are four screws, which are distributed symmetrically on the shell in pairs.

[0014] In a preferred embodiment of this utility model, the limiting pressure plate is made of rubber.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] In this invention, the outer wall of the mounting frame presses against the positioning rod, causing it to move towards the inner wall of the slider. During this movement, the positioning rod also presses against the second spring. As the mounting frame continues to move, the positioning hole on its outer wall moves to the position of the positioning rod. When they align, the second spring rebounds, pushing the positioning rod outward. At this point, the outer wall of the positioning rod engages with the inner wall of the positioning hole, completing the mounting frame installation process. Through the interaction of the first spring, the sliding rod, and the slider, the spring force pulls the slider downward, causing it to move against the outer wall of the sliding rod. This, in turn, moves the installed mounting frame downward, causing the heat sink to move downward. This allows the bottom of the heat sink to be tightly attached to the back of the chip inside the detector, improving heat dissipation efficiency. This installation method eliminates the need for welding or glue and does not affect subsequent maintenance.

[0017] In this invention, when installing the mounting frame, firstly, the locking rod at the bottom of the outer wall of the mounting frame is engaged with the locking hole inside the detector to complete the initial positioning and installation. Then, the rotating sleeve can be rotated, thereby driving the screw to rotate. At this time, the screw will extend to the left and right sides, and during the extension process, it will drive the limiting pressure plate to move. This will cause the limiting pressure plate to contact the inner wall of the detector, thereby forming a squeezing and limiting effect. During installation, the mounting frame can be installed between the front heat insulation plate and the rear control chip, which further facilitates the disassembly of the whole, thus facilitating subsequent disassembly and maintenance.

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0019] In the attached diagram:

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a top-view structural diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the disassembly and assembly mechanism of this utility model;

[0023] Figure 4 This is a schematic diagram of part of the disassembly and assembly mechanism of this utility model;

[0024] Figure 5 This is a schematic diagram of the auxiliary installation mechanism of this utility model.

[0025] In the diagram: 1. Housing; 2. Support foot; 31. Assembly / disassembly mechanism; 311. Slide rod; 312. Slider; 313. First spring; 314. Second spring; 315. Positioning rod; 316. Connecting rod; 317. First movable groove; 318. Second movable groove; 319. Pull rod; 3110. Mounting frame; 3111. Heat sink; 32. Auxiliary mounting mechanism; 321. Fixing rod; 322. Threaded sleeve; 323. Screw; 324. Rotating sleeve; 325. Limiting pressure plate; 326. Clamping rod. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0027] like Figures 1 to 5As shown, a heat sink for a photodetector includes a housing 1. Support feet 2 are fixedly connected to the outer wall of the housing 1. A disassembly / assembly mechanism 31 is provided on the housing 1. Auxiliary installation mechanisms 32 are provided on both sides of the disassembly / assembly mechanism 31. The disassembly / assembly mechanism 31 includes a sliding rod 311. A sliding groove is formed on the inner wall of the housing 1. The upper and lower ends of the sliding rod 311 are fixedly connected to the inner wall of the sliding groove. A slider 312 is slidably connected to the outer wall of the sliding rod 311. A first spring 313 is fixedly connected to the bottom end of the slider 312. The end of the first spring 313 away from the slider 312 is fixedly connected to the inner wall of the sliding groove. A sliding hole is formed on the outer wall of the slider 312, and a second spring is fixedly connected to the inner wall of the sliding hole. 314, the second spring 314 is fixedly connected to a positioning rod 315 at one end away from the inner wall of the sliding hole. The top of the slider 312 is provided with a first movable groove 317. A connecting rod 316 is slidably arranged on the inner wall of the first movable groove 317. The end of the connecting rod 316 away from the first movable groove 317 is fixedly connected to the outer wall of the positioning rod 315. A pull rod 319 is fixedly connected to the end of the connecting rod 316 away from the positioning rod 315. An installation frame 3110 is engaged with the outer wall of the positioning rod 315. A heat sink 3111 is installed on the inner wall of the installation frame 3110. A positioning hole is provided on the outer wall of the installation frame 3110. The outer wall of the positioning rod 315 is engaged with the inner wall of the positioning hole.

[0028] Furthermore, there are four positioning rods 315, which are symmetrically distributed in pairs inside the housing 1. The top of each positioning rod 315 has a bevel, which allows it to be engaged and installed at four positions on the left and right sides of the mounting frame 3110, thereby ensuring installation stability.

[0029] Furthermore, the outer wall of the slider 312 is fitted with the inner wall of the groove opened on the inner wall of the housing 1, and the outer wall of the positioning rod 315 is fitted with the inner wall of the sliding hole opened on the outer wall of the slider 312, thereby ensuring the stability after engagement and positioning.

[0030] Furthermore, the inner walls of the first movable groove 317 and the second movable groove 318 are properly fitted to the outer wall of the connecting rod 316, thereby ensuring the tight fit of the connecting rod 316 as it moves along the inner walls of the first movable groove 317 and the second movable groove 318, thus ensuring stability.

[0031] The auxiliary installation mechanism 32 includes a fixed rod 321 fixedly connected to the housing 1. A threaded sleeve 322 is fixedly connected to the end of the fixed rod 321 away from the housing 1. A screw 323 is threadedly connected to the inner wall of the threaded sleeve 322. A rotating sleeve 324 is fixedly connected to the outer wall of the screw 323. A limit plate 325 is fixedly connected to the end of the screw 323 away from the threaded sleeve 322. A locking rod 326 is fixedly connected to the bottom end of the support foot 2.

[0032] Furthermore, there are four screws 323, which are distributed symmetrically in pairs on the housing 1, so that friction limiting can be performed on all four sides at the same time, thereby improving installation stability.

[0033] Furthermore, the limiting pressure plate 325 is made of rubber, which increases the friction between it and the inner wall of the detector, thereby improving friction limiting and installation stability.

[0034] The implementation principle of a photodetector heat sink in this embodiment is as follows: When the heat sink 3111 needs to be installed, the mounting frame 3110 is first moved from top to bottom, so that the outer wall of the mounting frame 3110 contacts the inclined surface at the top of the positioning rod 315. Then, it continues to move downward, and the outer wall of the mounting frame 3110 will press against the positioning rod 315. The pressed positioning rod 315 will move towards the inner wall of the slider 312. At the same time, it will press against the second spring 314 during the movement. Then, as the mounting frame 3110 continues to move, the positioning hole on its outer wall will move to the position of the positioning rod 315. When the two are aligned, the second spring 314 will rebound and reset, thereby pushing the positioning rod 315 to reset outward. At this time, the outer wall of the positioning rod 315 will be engaged with the inner wall of the positioning hole, thus completing the installation. The installation process of the mounting frame 3110 involves the interaction of the first spring 313, the sliding rod 311, and the slider 312. The elastic force of the first spring 313 pulls the slider 312 downward, causing it to move on the outer wall of the sliding rod 311. This moves the installed mounting frame 3110 downward, which in turn moves the heat sink 3111 downward. This allows the bottom of the heat sink 3111 to be in close contact with the back of the chip inside the detector, thereby improving heat dissipation efficiency. This installation method eliminates the need for welding or glue fixation and does not affect subsequent maintenance. For disassembly, the pull rod 319 can be pulled directly, which moves the connecting rod 316. The connecting rod 316 then moves the positioning rod 315 back towards the inner wall of the slider 312, causing the outer wall of the positioning rod 315 to disengage from the inner wall of the positioning hole on the outer wall of the mounting frame 3110, thus completing the disassembly.

[0035] When installing the mounting frame 3110, first engage the locking rod 326 at the bottom of the outer wall of the mounting frame 3110 with the locking hole inside the detector to complete the initial positioning installation. Then, rotate the rotating sleeve 324 to drive the screw 323 to rotate. At this time, the screw 323 will extend to the left and right sides, and during the extension, it will drive the limiting pressure plate 325 to move. This will cause the limiting pressure plate 325 to contact the inner wall of the detector, thereby forming a squeezing and limiting effect. During installation, the mounting frame 3110 can be installed between the front heat insulation plate and the rear control chip, which will further facilitate the disassembly of the whole, thus facilitating subsequent disassembly and maintenance.

Claims

1. A heat sink for a photodetector, comprising a housing (1); The outer wall of the housing (1) is fixedly connected with a support foot (2), characterized in that, The housing (1) is provided with a disassembly and assembly mechanism (31), and auxiliary installation mechanisms (32) are provided on both sides of the disassembly and assembly mechanism (31). The disassembly and assembly mechanism (31) includes a slide rod (311): The inner wall of the housing (1) is provided with a sliding groove. The upper and lower ends of the sliding rod (311) are fixedly connected to the inner wall of the sliding groove. A slider (312) is slidably connected to the outer wall of the sliding rod (311). A first spring (313) is fixedly connected to the bottom end of the slider (312). The end of the first spring (313) away from the slider (312) is fixedly connected to the inner wall of the sliding groove. A sliding hole is provided on the outer wall of the slider (312). A second spring (314) is fixedly connected to the inner wall of the sliding hole. A positioning rod (315) is fixedly connected to the end of the second spring (314) away from the inner wall of the sliding hole. A first positioning rod (315) is provided at the top of the slider (312). The first movable groove (317) has a connecting rod (316) slidably disposed on the inner wall of the first movable groove (317). The end of the connecting rod (316) away from the first movable groove (317) is fixedly connected to the outer wall of the positioning rod (315). The end of the connecting rod (316) away from the positioning rod (315) is fixedly connected to a pull rod (319). The outer wall of the positioning rod (315) is engaged with a mounting frame (3110). The inner wall of the mounting frame (3110) is equipped with a heat sink (3111). The outer wall of the mounting frame (3110) is provided with a positioning hole. The outer wall of the positioning rod (315) is engaged with the inner wall of the positioning hole.

2. The heat sink for a photodetector according to claim 1, characterized in that, The auxiliary installation mechanism (32) includes a fixing rod (321) fixedly connected to the housing (1), a threaded sleeve (322) fixedly connected to the end of the fixing rod (321) away from the housing (1), a screw (323) threadedly connected to the inner wall of the threaded sleeve (322), a rotating sleeve (324) fixedly connected to the outer wall of the screw (323), a limit plate (325) fixedly connected to the end of the screw (323) away from the threaded sleeve (322), and a locking rod (326) fixedly connected to the bottom end of the support foot (2).

3. The heat sink for a photodetector according to claim 1, characterized in that, There are four positioning rods (315), which are arranged in pairs in a symmetrical structure inside the housing (1). The top of each positioning rod (315) has an inclined surface.

4. A heat sink for a photodetector according to claim 1, characterized in that, The outer wall of the slider (312) is fitted with the inner wall of the groove opened on the inner wall of the housing (1), and the outer wall of the positioning rod (315) is fitted with the inner wall of the sliding hole opened on the outer wall of the slider (312).

5. A heat sink for a photodetector according to claim 1, characterized in that, The inner walls of the first movable groove (317) and the second movable groove (318) are properly fitted to the outer wall of the connecting rod (316).

6. A heat sink for a photodetector according to claim 2, characterized in that, There are four screws (323), which are distributed symmetrically in pairs on the shell (1).

7. A heat sink for a photodetector according to claim 2, characterized in that, The limiting pressure plate (325) is made of rubber.

Images