A compact infrared card reader for small enclosures and method of installation

Abstract

The application provides a small-sized infrared card machine for a closed space and a mounting method thereof. The device is designed through a sliding rail, a sliding connecting piece, a multi-axis connecting structure and the like, and realizes flexible adjustment of the height, longitudinal and lateral angles of the infrared card machine. The sliding rail is fixedly arranged at a working position, the sliding rail is movably connected with the sliding connecting piece, the first connecting shaft is arranged on the sliding connecting piece, the first connecting shaft is perpendicularly connected with the second connecting shaft, the mounting plate is arranged on the second connecting shaft, and the infrared card machine body is clamped in the mounting plate. The upper and lower end surfaces of the sliding rail are provided with a sliding groove and a through groove, and the L-shaped support passes through the through groove and is slidably embedded in the sliding groove. The axial limiting mechanism is arranged between the first connecting shaft and the second connecting shaft, and the stability and accuracy after angle adjustment are ensured through the embedding of the positioning protrusion and the tooth groove. The device is compact in structure, simple in operation, suitable for real-time online monitoring of the temperature in a closed and narrow space, and high in flexibility and reliability.

Description

Technical Field

[0001] This invention relates to the field of infrared equipment installation technology, and more specifically to an infrared card camera for small enclosed spaces and its installation method. Background Technology

[0002] Infrared card-type cameras, due to their small size and ability to monitor ambient temperature in real time, have a natural advantage in monitoring small, enclosed spaces. Infrared thermal imaging technology, as an advanced temperature monitoring technology, is based on the principle of thermal radiation from objects. It captures and measures infrared radiation and converts these radiation signals into electrical signals to obtain the spatial distribution of surface temperature. In the field of power plant temperature monitoring, infrared thermal imaging technology, through non-contact temperature measurement, can greatly reduce the risk of electric shock to workers, resulting in a high level of safety.

[0003] However, the installation of infrared compact cameras currently typically involves two methods: ceiling mounting, where the camera's mounting plate is installed on the ceiling (usually horizontally), and wall mounting, where the camera's mounting plate is installed on a wall (usually vertically). While these two methods meet basic installation requirements, they have some significant shortcomings: 1. Whether ceiling-mounted or wall-mounted, infrared card cameras are typically fixed using bolts, adhesives, or welding. Once the monitoring position and angle of the infrared card camera are determined, it is difficult to make subsequent adjustments, which limits its use. This fixing method is particularly inconvenient when frequent adjustments to the monitoring angle or position are required. 2. The environment of small, enclosed spaces is complex and variable, and different equipment and structures may require different installation positions and angles. Existing installation methods are difficult to adapt to these changes quickly, affecting monitoring results and system reliability; 3. Once the infrared card reader is installed, if maintenance or replacement is required, the original fixing device must be removed first. This not only increases the workload but may also damage the equipment. Summary of the Invention

[0004] In view of the technical problems existing in the background art, the present invention provides an infrared card camera for small enclosed spaces and an installation method thereof; the device, through the design of slide rails, sliding connectors, multi-axis connection structures, etc., realizes flexible adjustment of the height, longitudinal and lateral angles of the infrared card camera, thereby better meeting the needs of temperature monitoring in small enclosed spaces.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An infrared card reader for small enclosed spaces includes a slide rail, a sliding connector, a first connecting shaft, a second connecting shaft, and a mounting plate. The slide rail is fixedly installed in the working position. The slide rail is movably connected to the sliding connector. The first connecting shaft is installed on the sliding connector. The first connecting shaft is perpendicularly connected to the second connecting shaft. The mounting plate is installed on the second connecting shaft. The infrared card reader body is snapped into the mounting plate.

[0006] In a preferred embodiment, the upper and lower end faces of the slide rail are provided with vertically penetrating grooves, the upper end face of the slide rail is provided with a through groove and connected to the slide grooves, and the sliding connector includes left and right symmetrical L-shaped brackets, the L-shaped brackets passing through the through grooves and slidingly engaging with the slide grooves.

[0007] In the preferred embodiment, the slide rail is fixedly installed at the designated position by the ear plates on both sides, and equidistant positioning holes are opened on both sides of the through groove. Corresponding connecting holes are opened on the L-shaped bracket. After the positioning screw passes through the connecting hole and the positioning hole, the position of the L-shaped bracket is locked and fixed.

[0008] In a preferred embodiment, the first connecting shaft includes a first fixed end shaft and a first rotating shaft, and the second connecting shaft includes a second fixed end shaft and a second rotating shaft. One side of the first fixed end shaft is fixedly connected to a sliding connector, and the other side of the first fixed end shaft is movably connected to the first rotating shaft. The first fixed end shaft and the first rotating shaft are coaxially arranged. One side of the second fixed end shaft is fixedly connected to the first rotating shaft, and the other side of the second fixed end shaft is movably connected to the second rotating shaft. The second fixed end shaft and the second rotating shaft are arranged perpendicularly. A slot is provided on the side wall of the second rotating shaft, and a corresponding rail is provided on the back of the mounting plate, which is movably engaged with the slot.

[0009] In a preferred embodiment, a positioning protrusion is provided at the outer edge of the end face of the first fixed end shaft and the second fixed end shaft. The positioning protrusion is arranged symmetrically in a ring around the axis. Corresponding tooth grooves are opened at the outer edge of the end face of the first rotating shaft and the second rotating shaft. The positioning protrusion and the tooth groove are movably engaged.

[0010] In a preferred embodiment, an axial limiting mechanism is provided between the first fixed end shaft and the first rotating shaft; the axial limiting mechanism includes a central shaft, which is coaxially arranged with the first fixed end shaft and the first rotating shaft, one end of the central shaft is perpendicularly connected to the end face of the first fixed end shaft, and the other end of the central shaft is inserted into the cavity at the center of the first rotating shaft and perpendicularly connected to the clamping plate, and a spring is sleeved on the outer wall of the central shaft, with the two ends of the spring connected to the clamping plate and the inner wall of the cavity of the first rotating shaft, respectively.

[0011] In a preferred embodiment, the sides of the card plate and the first rotating shaft are respectively provided with through holes. After the limiting rod passes through the through holes on the card plate and the first rotating shaft, the two are fixed together and the position of the card plate is locked and fixed.

[0012] In a preferred embodiment, an axial limiting mechanism is also provided between the second fixed end shaft and the second rotating shaft. The structure and connection method of the axial limiting mechanism are the same as those of the axial limiting mechanisms in the first fixed end shaft and the first rotating shaft.

[0013] In a preferred embodiment, the installation method of the infrared card reader includes the following steps: S1. Install the slide rail in the designated working position using the ear plates on both sides of the slide rail; S2. Insert the sliding connector into the slide groove and adjust the height of the L-shaped bracket up and down along the slide groove. After the height of the L-shaped bracket is adjusted to the correct position, pass the positioning screw through the connecting hole and the positioning hole to lock and fix the position of the L-shaped bracket. S3. Fix one side of the first connecting shaft to the L-shaped bracket, and fix the other side of the first connecting shaft to the second connecting shaft; S4. Insert the mounting plate onto the second rotating shaft; S5. Attach the infrared card unit to the mounting plate; S6. Rotate the second connecting shaft on the X-axis and the first connecting shaft on the Z-axis to adjust the infrared card body to the optimal angle.

[0014] In the preferred embodiment, the steps for adjusting the infrared card body on the Z-axis in S6 are as follows: S6.1 Adjust the position of the clamping plate inside the first rotating shaft. After adjusting the tightness of the first fixed end shaft and the first rotating shaft, pass the limiting rod through the through hole on the clamping plate and the first rotating shaft and fix the two together. S6.2 Pull out the first rotating shaft and disengage the positioning protrusion from the tooth groove, then rotate the first rotating shaft around the Z-axis to adjust the angle of the infrared card body in the Z-axis direction; S6.3 After the Z-axis angle of the infrared card body is adjusted to the correct position, the first rotating shaft is released. The first rotating shaft springs back inward under the action of the spring force, and the positioning protrusion is re-embedded into the tooth groove and fixed. The steps for adjusting the infrared card body on the X-axis are as follows: S6.4 Adjust the position of the clamping plate within the second rotating shaft, using the same method as S6.1; S6.5 Pull out the second rotating shaft and disengage the positioning protrusion from the tooth groove, then rotate the second rotating shaft around the X-axis to adjust the angle of the infrared card body in the X-axis direction; S6.3 After the X-axis angle of the infrared card machine body is adjusted to the correct position, the second rotating shaft is released. The second rotating shaft springs back inward under the action of the spring force, and the positioning protrusion is re-embedded into the tooth groove and fixed.

[0015] An infrared card reader for small, enclosed spaces and its installation method, the beneficial effects of which include, but are not limited to, the following: 1. This invention utilizes the cooperation of a slide rail and a sliding connector. A pair of L-shaped brackets forming the sliding connector can slide along the grooves and through slots on the slide rail. Positioning screws are threaded into the connecting holes on the L-shaped brackets via corresponding positioning holes to position the L-shaped brackets. This method allows for flexible adjustment of the infrared card reader's installation height when vertically installed on the slide rail, meeting different height requirements. 2. The design of the first and second connecting shafts allows the card plate to be adjusted in both longitudinal and transverse directions. The axial limiting mechanism between the first and second connecting shafts ensures stability and accuracy after angle adjustment through the engagement of positioning protrusions and toothed grooves. This multi-axis adjustment function enables the infrared card camera to adapt to monitoring needs at different angles, improving the flexibility and accuracy of monitoring. 3. The entire installation device has a compact structure, with stable connections between components and a small footprint, making it particularly suitable for use in enclosed and confined spaces. The design of the slide rails, sliding connectors, connecting shafts, and mounting plates fully considers space utilization, ensuring the overall harmony and aesthetics of the device. 4. Installation and adjustment are simple and easy, requiring no complicated tools or professional skills. The infrared card reader can be installed and its angle adjusted through simple sliding, rotating, and positioning operations, greatly improving work efficiency. Due to its modular design, each component can be independently disassembled and replaced, facilitating daily maintenance and repair. Adjusting or replacing the infrared card reader is a simple task, reducing maintenance costs and time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram showing the overall structure and installation effect of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the connection structure between the slide rail and the sliding connector of the present invention; Figure 4 This is a schematic diagram showing the overall structure of the present invention disassembled. Figure 5 This is a schematic diagram of the connection structure between the fixed end shaft and the rotating shaft of the present invention; Figure 6 This is a cross-sectional view of the connection structure between the fixed end shaft and the rotating shaft of the present invention; Figure 7 This is a planar sectional view of the axial limiting mechanism of the present invention.

[0017] In the figure: slide rail 1, slide groove 101, through groove 102, ear plate 103, positioning hole 104, positioning screw 105, sliding connector 2, L-shaped bracket 201, connecting hole 202, first connecting shaft 3, first fixed end shaft 301, first rotating shaft 302, second connecting shaft 4, second fixed end shaft 401, second rotating shaft 402, slot 403, mounting plate 5, slot rail 501, positioning protrusion 6, axial limiting mechanism 7, central shaft 701, card plate 702, spring 703, through hole 704, limiting rod 705, tooth groove 8, infrared card body 9. Detailed Implementation

[0018] like Figure 1 and Figure 2 As shown, an infrared card reader for small enclosed spaces includes a slide rail 1, a sliding connector 2, a first connecting shaft 3, a second connecting shaft 4, and a mounting plate 5. The slide rail 1 is fixedly installed in the working position. The slide rail 1 is movably connected to the sliding connector 2. The first connecting shaft 3 is installed on the sliding connector 2. The first connecting shaft 3 is perpendicularly connected to the second connecting shaft 4. The mounting plate 5 is installed on the second connecting shaft 4. The infrared card reader body 9 is snapped into the mounting plate 5.

[0019] Preferred solutions include Figure 3 As shown, the slide rail 1 has a through groove 101 on its upper and lower end faces, and a through groove 102 on its upper end face that connects to the slide groove 101. The sliding connector 2 includes symmetrical L-shaped brackets 201, which pass through the through groove 102 and slide into the slide groove 101. The slide rail 1 is fixedly installed in a designated position by the ear plates 103 on both sides. The through groove 102 has equidistant positioning holes 104 on both sides, and the L-shaped bracket 201 has corresponding connecting holes 202. The positioning screws 105 pass through the connecting holes 202 and the positioning holes 104 to lock and fix the position of the L-shaped bracket 201. With the above structure, the position of the sliding connector 2 can be freely adjusted up and down, thereby adjusting the position of the infrared card machine body 9 on the Y-axis.

[0020] Preferred solutions include Figure 4As shown, the first connecting shaft 3 includes a first fixed end shaft 301 and a first rotating shaft 302, and the second connecting shaft 4 includes a second fixed end shaft 401 and a second rotating shaft 402. One side of the first fixed end shaft 301 is fixedly connected to the sliding connector 2, and the other side of the first fixed end shaft 301 is movably connected to the first rotating shaft 302. The first fixed end shaft 301 and the first rotating shaft 302 are coaxially arranged. One side of the second fixed end shaft 401 is fixedly connected to the first rotating shaft 302, and the other side of the second fixed end shaft 401 is movably connected to the second rotating shaft 402. The second fixed end shaft 401 and the second rotating shaft 402 are vertically arranged. A slot 403 is provided on the side wall of the second rotating shaft 402, and a corresponding rail 501 is provided on the back of the mounting plate 5. The rail 501 is movably engaged with the slot 403. By rotating the first rotating shaft 302, the angle of the infrared card reader 9 in the Z-axis direction can be freely adjusted. Since the second fixed end shaft 401 and the second rotating shaft 402 are set perpendicularly, the angle of the infrared card reader 9 in the X-axis direction can be freely adjusted by rotating the second rotating shaft 402, thus realizing the multi-angle adjustment function of the infrared card reader 9.

[0021] Preferred solutions include Figure 5 As shown, a positioning protrusion 6 is provided at the outer edge of the end face of the first fixed end shaft 301 and the second fixed end shaft 401. The positioning protrusion 6 is arranged symmetrically in a ring around the axis. Correspondingly, a toothed groove 8 is provided at the outer edge of the end face of the first rotating shaft 302 and the second rotating shaft 402. The positioning protrusion 6 and the toothed groove 8 are movably engaged to achieve the function of positioning and fixing the angle.

[0022] Preferred solutions include Figure 5 and Figure 6 As shown, an axial limiting mechanism 7 is provided between the first fixed end shaft 301 and the first rotating shaft 302; the axial limiting mechanism 7 includes a central shaft 701, which is coaxially arranged with the first fixed end shaft 301 and the first rotating shaft 302. One end of the central shaft 701 is perpendicularly connected to the end face of the first fixed end shaft 301, and the other end of the central shaft 701 is inserted into the cavity at the center of the first rotating shaft 302 and perpendicularly connected to the clamping plate 702. A spring 703 is sleeved on the outer wall of the central shaft 701, and the two ends of the spring 703 are respectively connected to the clamping plate 702 and the inner wall of the cavity of the first rotating shaft 302.

[0023] Preferred solutions include Figure 6 and Figure 7As shown, the sides of the clamping plate 702 and the first rotating shaft 302 are respectively provided with through holes 704. After the limiting rod 705 passes through the through holes 704 on the clamping plate 702 and the first rotating shaft 302, it fixes the two together and locks the position of the clamping plate 702. An axial limiting mechanism 7 is also provided between the second fixed end shaft 401 and the second rotating shaft 402. The structure and connection method of the axial limiting mechanism 7 are the same as those of the axial limiting mechanisms 7 in the first fixed end shaft 301 and the first rotating shaft 302.

[0024] Example: An infrared card reader for small, enclosed spaces, the installation method of which includes the following steps: S1. Install the slide rail 1 in the designated working position using the ear plates 103 on both sides of the slide rail 1; S2. Insert the sliding connector 2 into the slide groove 101, and adjust the height of the L-shaped bracket 201 up and down along the slide groove 101. After the height of the L-shaped bracket 201 is adjusted to the correct position, pass the positioning screw 105 through the connecting hole 202 and the positioning hole 104 to lock and fix the position of the L-shaped bracket 201. S3. Fix the first fixed end shaft 301 of the first connecting shaft 3 to the L-shaped bracket 201, and fix the first rotating shaft 302 of the first connecting shaft 3 to the second fixed end shaft 401 of the second connecting shaft 4. S4. Insert the mounting plate 5 into the second rotating shaft 402 of the second connecting shaft 4; S5. Attach the infrared card reader 9 into the mounting plate 5; S6. Adjust the position of the card plate 702 within the first rotating shaft 302. After adjusting the tightness of the first fixed end shaft 301 and the first rotating shaft 302, pass the limiting rod 705 through the through hole 704 on the card plate 702 and the first rotating shaft 302 and fix them together. Pull out the first rotating shaft 302 and disengage the positioning protrusion 6 from the tooth groove 8. Then rotate the first rotating shaft 302 around the Z-axis to adjust the angle of the infrared card machine body 9 in the Z-axis direction. After the Z-axis angle of the infrared card machine body 9 is adjusted to the correct position, release the first rotating shaft 302. Under the action of the spring force of the spring 703, the first rotating shaft 302 springs back inward and causes the positioning protrusion 6 to re-embed into the tooth groove 8 and complete the fixation. Adjust the position of the card plate 702 within the second rotating shaft 402. After adjusting the tightness of the second fixed end shaft 401 and the second rotating shaft 402, pass the limiting rod 705 through the through hole 704 on the card plate 702 and the second rotating shaft 402 and fix them together. Pull the second rotating shaft 402 outward and disengage the positioning protrusion 6 from the tooth groove 8. Then rotate the second rotating shaft 402 around the X-axis to adjust the angle of the infrared card reader 9 in the X-axis direction. After the X-axis angle of the infrared card reader 9 is adjusted to the correct position, release the second rotating shaft 402. Under the action of the spring force of the spring 703, the second rotating shaft 402 springs back inward and causes the positioning protrusion 6 to re-embed into the tooth groove 8 and be fixed. Through the above two steps, the angle adjustment of the infrared card reader 9 in the X and Z-axis directions can be completed quickly.

[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention; no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An infrared card reader for small enclosed spaces, comprising a slide rail (1), a sliding connector (2), a first connecting shaft (3), a second connecting shaft (4), and a mounting plate (5), characterized in that: The slide rail (1) is fixedly installed in the working position. The slide rail (1) is movably connected to the sliding connector (2). The sliding connector (2) is provided with a first connecting shaft (3). The first connecting shaft (3) is perpendicularly connected to the second connecting shaft (4). The second connecting shaft (4) is provided with a mounting plate (5). The infrared card body (9) is snapped into the mounting plate (5). Positioning protrusions (6) are provided at the outer edges of the end faces of the first fixed end shaft (301) and the second fixed end shaft (401). The positioning protrusions (6) are arranged symmetrically around the axis. Correspondingly, toothed grooves (8) are provided at the outer edges of the end faces of the first rotating shaft (302) and the second rotating shaft (402). The positioning protrusions (6) and the toothed grooves (8) are movably engaged. An axial limiting mechanism (7) is provided between the first fixed end shaft (301) and the first rotating shaft (302); the axial limiting mechanism (7) includes a central shaft (701), which is coaxially arranged with the first fixed end shaft (301) and the first rotating shaft (302). One end of the central shaft (701) is perpendicularly connected to the end face of the first fixed end shaft (301), and the other end of the central shaft (701) is inserted into the cavity at the center of the first rotating shaft (302) and perpendicularly connected to the clamping plate (702). A spring (703) is sleeved on the outer wall of the central shaft (701), and the two ends of the spring (703) are respectively connected to the clamping plate (702) and the inner wall of the cavity of the first rotating shaft (302). The side of the card plate (702) and the first rotating shaft (302) are respectively provided with through holes (704). After the limiting rod (705) passes through the through holes (704) on the card plate (702) and the first rotating shaft (302), it fixes the two together and locks the position of the card plate (702).

2. The infrared card reader for small enclosed spaces according to claim 1, characterized in that: The slide rail (1) has a through groove (101) on its upper and lower end faces. The slide rail (1) has a through groove (102) on its upper end face and connects to the slide groove (101). The sliding connector (2) includes an L-shaped bracket (201) that is symmetrical on the left and right. The L-shaped bracket (201) passes through the through groove (102) and slides into the slide groove (101).

3. The infrared card reader for small enclosed spaces according to claim 2, characterized in that: The slide rail (1) is fixedly installed in the designated position by the ear plates (103) on both sides. The through groove (102) has equidistant positioning holes (104) on both sides. The L-shaped bracket (201) has corresponding connecting holes (202). The positioning screw (105) passes through the connecting hole (202) and the positioning hole (104) to lock and fix the position of the L-shaped bracket (201).

4. The infrared card reader for small enclosed spaces according to claim 1, characterized in that: The first connecting shaft (3) includes a first fixed end shaft (301) and a first rotating shaft (302), and the second connecting shaft (4) includes a second fixed end shaft (401) and a second rotating shaft (402). One side of the first fixed end shaft (301) is fixedly connected to the sliding connector (2), and the other side of the first fixed end shaft (301) is movably connected to the first rotating shaft (302). The first fixed end shaft (301) and the first rotating shaft (302) are coaxially arranged. One side of the second fixed end shaft (401) is fixedly connected to the first rotating shaft (302), and the other side of the second fixed end shaft (401) is movably connected to the second rotating shaft (402). The second fixed end shaft (401) and the second rotating shaft (402) are arranged perpendicularly. A slot (403) is provided on the side wall of the second rotating shaft (402), and a corresponding rail (501) is provided on the back of the mounting plate (5). The rail (501) is movably engaged with the slot (403).

5. The infrared card reader for small enclosed spaces according to claim 1, characterized in that: An axial limiting mechanism (7) is also provided between the second fixed end shaft (401) and the second rotating shaft (402). The structure and connection method of the axial limiting mechanism (7) are the same as those of the axial limiting mechanisms (7) in the first fixed end shaft (301) and the first rotating shaft (302).

6. The infrared card reader for small enclosed spaces according to any one of claims 1 to 5, characterized in that: The installation method for this infrared card reader includes the following steps: S1. Install the slide rail (1) in the designated working position using the ear plates (103) on both sides of the slide rail (1); S2. Insert the sliding connector (2) into the slide groove (101) and adjust the height of the L-shaped bracket (201) up and down along the slide groove (101). When the height of the L-shaped bracket (201) is adjusted to the correct position, pass the positioning screw (105) through the connecting hole (202) and the positioning hole (104) to lock and fix the position of the L-shaped bracket (201). S3. Fix one side of the first connecting shaft (3) to the L-shaped bracket (201) and fix the other side of the first connecting shaft (3) to the second connecting shaft (4); S4. Insert the mounting plate (5) into the second rotating shaft (402); S5. Attach the infrared card body (9) to the mounting plate (5); S6. Rotate the second connecting shaft (4) on the X-axis and the first connecting shaft (3) in the Z-axis direction to adjust the infrared card body (9) to the optimal angle.

7. The installation method for a small, enclosed space infrared card reader according to claim 6, characterized in that: In S6, the steps for adjusting the infrared card body (9) on the Z-axis are as follows: S6.1 Adjust the position of the clamping plate (702) inside the first rotating shaft (302), adjust the tightness of the first fixed end shaft (301) and the first rotating shaft (302) to the correct position, and then pass the limiting rod (705) through the through hole (704) on the clamping plate (702) and the first rotating shaft (302) and fix the two together. S6.2 Pull out the first rotating shaft (302) and make the positioning protrusion (6) disengage from the tooth groove (8), then rotate the first rotating shaft (302) around the Z-axis to adjust the angle of the infrared card body (9) in the Z-axis direction; S6.3 After the Z-axis angle of the infrared card body (9) is adjusted to the correct position, the first rotating shaft (302) is released. The first rotating shaft (302) springs back inward under the action of the spring force (703), and the positioning protrusion (6) is re-embedded into the tooth groove (8) and fixed. The steps for adjusting the infrared card body (9) on the X-axis are as follows: S6.4 Adjust the position of the clamping plate (702) within the second rotating shaft (402), the method is the same as S6.1; S6.5 Pull out the second rotating shaft (402) and disengage the positioning protrusion (6) from the tooth groove (8), then rotate the second rotating shaft (402) around the X-axis to adjust the angle of the infrared card body (9) in the X-axis direction; S6.3 After the X-axis angle of the infrared card body (9) is adjusted to the correct position, the second rotating shaft (402) is released. The second rotating shaft (402) springs back inward under the action of the spring force (703), and the positioning protrusion (6) is re-embedded into the tooth groove (8) and fixed.

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