Infrared detection device
By adopting a bezel and intermediate plate structure in the infrared detector, combined with anti-offset parts and column rods, the problem of easy deformation of the pins of the non-cooled infrared detector is solved, and the effect of neatly stacking and protecting thermistors is achieved.
Patent Information
- Application Number
- CN202421061094.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-16
AI Technical Summary
After the non-cooled infrared detector is packaged, the pins of the ceramic package base are easily deformed and damaged due to extrusion, making it difficult to stack neatly.
An infrared detection device is designed, adopting a frame guard and intermediate plate structure. By installing anti-offset parts and column rods, the stable plug-in and correct pin arrangement of the ceramic package base are ensured, and external pressure is prevented from directly acting on the thermistor. , and expand the fault tolerance range of pin mounting through tapered holes.
The neat stacking of infrared detectors is realized, which protects thermistors, reduces the difficulty of pin mounting, and prevents deformation and damage caused by extrusion.
Smart Images
Figure CN222231869U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an infrared detection device, belonging to the technical field of infrared detection. Background Art
[0002] Uncooled infrared detectors are widely used in the fields of automobiles, security, biomedicine, electricity, smart buildings, forest fire prevention, smart phones and the Internet of Things. In a vacuum packaging environment, the infrared band passes through a silicon or germanium window with a layer of anti-reflection film evaporated on it, and the heating device material changes the resistance of the thermistor film. The readout circuit then reads the change in the electrical signal and converts the changed resistance value into the change in current and voltage. After a series of signal and graphic software algorithm processing, the changed electrical signal is converted into a graphic signal for imaging. At present, after the uncooled infrared detector is packaged, two rows of pins are installed on one side of the ceramic package base. Due to the influence of the pins, it is difficult for the uncooled infrared detectors to be neatly stacked together. During the stacking process, the pins are easily squeezed and deformed by other uncooled infrared detectors. Therefore, it is necessary to design an infrared detection device that can be neatly stacked together. Utility Model Content
[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an infrared detection device to solve the problems raised in the above-mentioned background technology. The present invention can be neatly stacked together to prevent the pins from being deformed and damaged due to extrusion.
[0004] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: an infrared detection device, including a protective frame, a ceramic packaging base is installed in the protective frame, a thermistor is installed on the upper surface of the ceramic packaging base, two rows of pins are installed on the bottom of the ceramic packaging base, an intermediate plate is provided on the upper side of the protective frame, a rectangular opening is opened in the middle position of the upper surface of the intermediate plate, the thermistor is arranged in the rectangular opening, two rows of columns matching with the pins are installed on the upper surface of the intermediate plate, a circular cavity arranged along the length direction of the column is opened in the column, and an anti-deviation member is installed between the intermediate plate and the protective frame.
[0005] Furthermore, the anti-deviation component includes a first card plate, and the first card plate is connected and fixed to two parallel side surfaces of the middle plate, and the second card plate is connected and fixed to two side surfaces of the middle plate adjacent to the first card plate, and the first card plate and the second card plate are in contact with the side surfaces of the protective frame, and the first card plate and the second card plate have the same specifications.
[0006] Furthermore, one side of the first card plate facing the middle plate and one side of the second card plate facing the middle plate are both connected and fixed with column caps, and the area of the middle plate covered by the first card plate and the area of the middle plate covered by the second card plate are both provided with blind holes matching with the column caps, and the column caps are pasted in the blind holes.
[0007] Furthermore, the four corners of the middle plate are processed with first rounded corners, the four corners of the frame are processed with second rounded corners, and the curvature of the first rounded corner is the same as the curvature of the second rounded corner.
[0008] Furthermore, the upper surface of the column rod is recessed downward to form a tapered hole, the tapered hole is communicated with the circular cavity, the tapered hole is a structure that is wide at the top and narrow at the bottom, and the diameter of the lower end of the tapered hole is the same as the diameter of the pin.
[0009] Furthermore, a positioning hole is formed by a depression at the position where the intermediate plate is installed with the column, and the lower end of the column is fixed in the positioning hole.
[0010] Beneficial effects of the utility model:
[0011] 1. Insert the thermistor into the rectangular opening on the middle plate, and fit the middle plate with the ceramic package base. At this time, the two first card boards and the two second card boards are both stuck on the side of the protective frame. Under the restriction of the first card board and the second card board, the stability of the plug-in between the ceramic package base and the middle plate is improved, and the external pressure is prevented from directly acting on the thermistor through the middle plate, thereby protecting the thermistor.
[0012] 2. After the middle plate and a ceramic package base are assembled, the two rows of pins on the other ceramic package base are respectively inserted into the circular cavities of the two rows of pillars on the middle plate until the end of the pillar away from the middle plate contacts the surface of the ceramic package base, thereby achieving neat stacking of two adjacent layers of ceramic package bases, and so on, to achieve stacking of multiple layers of ceramic package bases, thereby preventing the pins from being deformed and damaged due to extrusion.
[0013] 3. A conical hole that is wide at the top and narrow at the bottom is formed at the end of the column away from the middle plate, and the conical hole is arranged concentrically with the circular cavity. Then, under the action of the conical hole, the tolerance range of the pin inserted in the circular cavity is expanded, which plays a role in guiding the pin insertion path and reducing the difficulty of inserting the pin in the circular cavity. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:
[0015] Figure 1 This is a structural schematic diagram of an infrared detection device of the utility model;
[0016] Figure 2 It is a schematic diagram of the assembly of a thermistor, a ceramic package base and a protective frame in an infrared detection device of the utility model;
[0017] Figure 3This is a schematic diagram of the assembly of a column and an intermediate plate in an infrared detection device of the utility model;
[0018] Figure 4 This is a cross-sectional view of a column in an infrared detection device of the utility model;
[0019] Figure 5 This is a diagram showing an embodiment of an infrared detection device of the utility model;
[0020] In the figure: 1-frame, 2-first card board, 3-middle board, 4-first fillet, 5-second fillet, 6-pin, 7-second card board, 8-column, 9-conical hole, 10-thermistor, 11-ceramic package base, 12-rectangular opening, 13-circular cavity. DETAILED DESCRIPTION
[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0022] See also Figure 1 The utility model provides a technical solution: an infrared detection device, including a frame guard 1, a ceramic package base 11 is installed in the frame guard 1, a thermistor 10 is installed on the upper surface of the ceramic package base 11, two rows of pins 6 are installed on the bottom of the ceramic package base 11, the four corners of the middle plate 3 are processed with first fillets 4, the four corners of the frame guard 1 are processed with second fillets 5, the curvature of the first fillet 4 is the same as the curvature of the second fillet 5, the first fillet 4 makes the corner of the middle plate 3 transition smoothly, and the second fillet 5 makes the corner of the frame guard 1 transition smoothly.
[0023] See also Figure 1 , Figure 2 and Figure 3, an intermediate plate 3 is provided on the upper side of the frame 1, a rectangular opening 12 is provided in the middle of the upper surface of the intermediate plate 3, a thermistor 10 is arranged in the rectangular opening 12, a first card plate 2 is connected and fixed to two parallel sides of the intermediate plate 3, a second card plate 7 is connected and fixed to two sides of the intermediate plate 3 adjacent to the first card plate 2, the first card plate 2 and the second card plate 7 are fitted with the side of the frame 1, the first card plate 2 and the second card plate 7 have the same specifications, a column head is connected and fixed to one side of the first card plate 2 facing the intermediate plate 3 and one side of the second card plate 7 facing the intermediate plate 3, and a region of the intermediate plate 3 covered by the first card plate 2 and a region of the intermediate plate 3 covered by the second card plate 7 are provided The blind hole matched with the column head allows the column head to be pasted in the blind hole, thereby increasing the connection range of the first card board 2, the second card board 7 and the middle board 3, and improving the stability of the connection between the first card board 2, the second card board 7 and the middle board 3, so that the thermistor 10 is inserted into the rectangular opening 12 on the middle board 3, so that the middle board 3 and the ceramic package base 11 are fitted. At this time, the two first card boards 2 and the two second card boards 7 are all stuck on the side of the protective frame 1. Under the restriction of the first card board 2 and the second card board 7, the stability of the plug-in connection between the ceramic package base 11 and the middle board 3 is improved, and the external pressure is prevented from directly acting on the thermistor 10 through the middle board 3, thereby protecting the thermistor 10.
[0024] See also Figure 1-Figure 5 Two rows of columns 8 that match the pins 6 are installed on the upper surface of the middle plate 3, wherein the positioning holes formed by the depressions at the positions where the column 8 is installed on the middle plate 3 fix the lower ends of the column 8 in the positioning holes, thereby improving the stability of the connection between the column 8 and the middle plate 3, and a circular cavity 13 arranged along the length direction of the column 8 is opened in the column 8, so that after the middle plate 3 and a ceramic package base 11 are assembled, the two rows of pins 6 on the other ceramic package base 11 are respectively inserted into the circular cavities 13 of the two rows of columns 8 on the middle plate 3, until the end of the column 8 away from the middle plate 3 contacts the surface of the ceramic package base 11, thereby realizing the neat stacking of two adjacent layers of ceramic package bases 11, and so on, realizing the stacking of multiple layers of ceramic package bases 11, thereby preventing the pins 6 from being deformed and damaged due to extrusion.
[0025] See also Figure 1 , Figure 3 and Figure 4 The upper surface of the column 8 is recessed downward to form a tapered hole 9, which is communicated with the circular cavity 13. The tapered hole 9 is a structure that is wide at the top and narrow at the bottom. The diameter of the lower end of the tapered hole 9 is the same as the diameter of the pin 6. The end of the column 8 away from the middle plate 3 is recessed to form a tapered hole 9 that is wide at the top and narrow at the bottom, and the tapered hole 9 is arranged concentrically with the circular cavity 13. Under the action of the tapered hole 9, the fault tolerance range of the pin 6 inserted in the circular cavity 13 is expanded, which plays a role in guiding the insertion path of the pin 6 and reducing the difficulty of inserting the pin 6 in the circular cavity 13.
[0026] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. An infrared detection device, comprising a frame guard (1), characterized in that: A ceramic package base (11) is installed in the frame protection (1), a thermistor (10) is installed on the upper surface of the ceramic package base (11), two rows of pins (6) are installed on the bottom of the ceramic package base (11), an intermediate plate (3) is provided on the upper side of the frame protection (1), a rectangular opening (12) is provided in the middle of the upper surface of the intermediate plate (3), the thermistor (10) is arranged in the rectangular opening (12), two rows of columns (8) matching with the pins (6) are installed on the upper surface of the intermediate plate (3), a circular cavity (13) arranged along the length direction of the column (8) is provided in the column (8), and an anti-deviating member is installed between the intermediate plate (3) and the frame protection (1).
2. An infrared detection device according to claim 1, characterized in that: The anti-deviating component comprises a first clamping plate (2), two parallel side surfaces of the intermediate plate (3) are connected and fixed with the first clamping plate (2), two side surfaces of the intermediate plate (3) adjacent to the first clamping plate (2) are connected and fixed with a second clamping plate (7), the first clamping plate (2) and the second clamping plate (7) are in contact with the side surfaces of the protective frame (1), and the first clamping plate (2) and the second clamping plate (7) have the same specifications.
3. An infrared detection device according to claim 2, characterized in that: A side of the first clamping plate (2) facing the middle plate (3) and a side of the second clamping plate (7) facing the middle plate (3) are both connected and fixed with column heads, and a region of the middle plate (3) covered by the first clamping plate (2) and a region of the middle plate (3) covered by the second clamping plate (7) are both provided with blind holes matching with the column heads, and the column heads are pasted in the blind holes.
4. An infrared detection device according to claim 1, characterized in that: The four corners of the middle plate (3) are all processed with first rounded corners (4), and the four corners of the frame (1) are all processed with second rounded corners (5), and the curvature of the first rounded corner (4) is the same as the curvature of the second rounded corner (5).
5. An infrared detection device according to claim 1, characterized in that: The upper surface of the column (8) is recessed downward to form a tapered hole (9), which is communicated with the circular cavity (13). The tapered hole (9) is a structure that is wide at the top and narrow at the bottom, and the diameter of the lower end of the tapered hole (9) is the same as the diameter of the pin (6).
6. An infrared detection device according to claim 1, characterized in that: A positioning hole is formed by a depression at the position where the intermediate plate (3) is installed with the column (8), and the lower end of the column (8) is fixed in the positioning hole.