Infrared detector

Abstract

An infrared detector disclosed by the present invention comprises a first shell, a second shell and a plug-in assembly, the first shell is provided with a first port, the second shell is provided with a second port, the plug-in assembly comprises a plug-in part and a plug-in matching part, at least one of the first shell and the second shell is provided with the plug-in part, and at least one of the first shell and the second shell is provided with the plug-in matching part. The other one is provided with the insertion matching part which is in insertion matching with the insertion part, and the insertion part and the insertion matching part are respectively arranged at the first port or the second port; under the condition that the first shell moves to a first position along a first direction relative to the second shell, the inserting part is matched with the inserting matching part in an inserting manner, so that the first shell is connected with the second shell, and the first shell is limited in the first direction; the first port is in butt joint with the second port, and the first shell and the second shell define a containing inner cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of infrared detection equipment, and in particular to an infrared detector. Background Art

[0002] Infrared detector is a device for passive infrared collection, analysis and alarm. The infrared detector forms a storage space by connecting the front shell and the rear shell, so that other parts of the infrared detector can be located in the storage space, thereby realizing the protection of some parts. In the related art, the infrared detector is fixed to a wall or other fixing part by screws passing through the front shell and the rear shell. The method of fixing the front shell and the rear shell with screws not only increases the number of parts, but also requires special tools for disassembly and installation when disassembling or installing the front shell and the rear shell, which makes the disassembly and installation process relatively cumbersome. Summary of the invention

[0003] The invention discloses an infrared detector to solve the problem that the disassembly and installation process of the infrared detector in the related art is relatively complicated.

[0004] In order to solve the above-mentioned technical problems, the present invention is achieved as follows:

[0005] The present application discloses an infrared detector, comprising a first shell, a second shell and a plug assembly, wherein the first shell has a first port, the second shell has a second port, the plug assembly comprises a plug portion and a plug-in mating portion, at least one of the first shell and the second shell is provided with the plug portion, and the other is provided with the plug-in mating portion plug-fitted with the plug portion, the plug portion and the plug-in mating portion are respectively provided at the first port or the second port;

[0006] When the first shell moves to a first position relative to the second shell along a first direction, the plug-in portion is plugged and matched with the plug-in matching portion to connect the first shell and the second shell, and the first shell is limited in the first direction, the first port is docked with the second port, and the first shell and the second shell enclose a receiving inner cavity,

[0007] When the first shell moves to a second position along a second direction relative to the second shell, the plug-in portion is separated from the plug-fitting portion, and the first shell and the second shell are separable, wherein the first direction is opposite to the second direction.

[0008] The technical solution adopted by the present invention can achieve the following technical effects:

[0009] The infrared detector disclosed in the embodiment of the present application is provided with a plug-in component, and the plug-in component is provided with a structure including a plug-in portion and a plug-in mating portion, so that at least one of the first shell and the second shell can be provided with a plug-in portion, and the other can be provided with a plug-in mating portion that is plug-matched with the plug-in portion, and the plug-in portion and the plug-in mating portion are respectively provided at the first port or the second port, so that when the first shell is moved to a first position relative to the second shell along a first direction, the plug-in portion and the plug-in mating portion are plug-matched, so that the first shell and the second shell are connected, and when the first shell is moved to a second position relative to the second shell along a second direction, the plug-in portion and the plug-in mating portion are separated, so that the first shell and the second shell are separable, so that the first shell and the second shell do not need to be installed by other components, so that the structure of the infrared detector is relatively simple, and there is no need to use other tools for disassembly and installation, so that the disassembly and installation of the first shell and the second shell are more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A schematic diagram of an infrared detector disclosed in an embodiment of the present invention in a disassembled state;

[0011] Figure 2 A schematic diagram of the structure of a first shell disclosed in an embodiment of the present invention;

[0012] Figure 3 It is a schematic structural diagram of the second housing disclosed in an embodiment of the present invention at a first viewing angle;

[0013] Figure 4 A schematic diagram of the structure of the second housing disclosed in an embodiment of the present invention at a second viewing angle;

[0014] Figure 5 It is a schematic diagram of a first edge and a standard circle disclosed in an embodiment of the present invention.

[0015] Description of reference numerals:

[0016] 100-first housing, 101-first port, 102-first guide recess, 103-first guide protrusion, 104-first convex bump, 105-first locking portion, 106-limiting end surface, 1011-first edge,

[0017] 200-second housing, 201-second port, 202-second guide protrusion, 203-second guide concave platform, 204-avoidance slot, 205-second convex bump, 206-hand-feel sliding groove, 207-second locking portion,

[0018] 311-first plug-in portion, 312-second plug-in portion

[0019] 321-first plug-in mating portion, 322-second plug-in mating portion,

[0020] 400-Limiting ribs. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] The technical solutions disclosed in various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] Please refer to Figures 1 to 5 An embodiment of the present invention discloses an infrared detector, which includes a first shell 100, a second shell 200 and a plug-in assembly.

[0024] The first housing 100 has a first port 101 , and the second housing 200 has a second port 201 . The first housing 100 can be connected to the second port 201 of the second housing 200 through the first port 101 to form an accommodation space.

[0025] The plug-in assembly includes a plug-in portion and a plug-in mating portion. At least one of the first shell 100 and the second shell 200 is provided with the plug-in portion, and the other is provided with a plug-in mating portion that is plug-matched with the plug-in portion. The plug-in portion and the plug-in mating portion are respectively provided at the first port 101 or the second port 201.

[0026] When the first shell 100 moves to the first position along the first direction relative to the second shell 200, the plug-in portion is plugged into and matched with the plug-in matching portion to connect the first shell 100 and the second shell 200, and the first shell 100 is limited in the first direction, the first port 101 is connected with the second port 201, and the first shell 100 and the second shell 200 enclose an accommodating inner cavity.

[0027] When the first housing 100 moves to the second position along the second direction relative to the second housing 200, the plug-in portion is separated from the plug-fitting portion, and the first housing 100 and the second housing 200 are separable. The first direction is opposite to the second direction.

[0028] In a specific implementation process, the second housing 200 can be fixedly installed on a fixing member (such as a wall, a rack, etc.), and the first direction can be set to be a vertically downward direction in advance when installing the second housing 200, or the first direction can be set to be tilted downward relative to the vertical direction. During the installation of the first housing 100 and the second housing 200, the first housing 100 can be arranged in an upwardly offset manner relative to the second housing 200, and at this time, the plug-in portion of the first housing 100 can be higher than the plug-in mating portion of the second housing 200, or the plug-in mating portion of the first housing 100 can be higher than the plug-in portion of the second housing 200. Move the first port 101 of the first shell 100 toward the second port 201 of the second shell 200, and when the plug-in portion and the plug-in mating portion are opposite to each other in the first direction, move the first shell 100 relative to the second shell 200 in the first direction, so that the plug-in portion and the plug-in mating portion are plugged and mated. The plug-in mating of the plug-in portion and the plug-in mating portion can limit the first shell 100 from continuing to move in the first direction, so that the first shell 100 and the second shell 200 are connected, and the first shell 100 is prevented from being separated under the action of gravity. When the first shell 100 and the second shell 200 are separated, the first shell 100 is moved relative to the second shell 200 in the second direction, so that the plug-in portion and the plug-in mating portion are separated, and then the first shell 100 and the second shell 200 can be separated.

[0029] The infrared detector disclosed in the embodiment of the present application is provided with a plug-in component, and the plug-in component is provided with a structure including a plug-in portion and a plug-in mating portion, so that at least one of the first shell 100 and the second shell 200 can be provided with a plug-in portion, and the other can be provided with a plug-in mating portion that is plugged and mated with the plug-in portion, and the plug-in portion and the plug-in mating portion are respectively provided at the first port 101 or the second port 201, so that when the first shell 100 moves to a first position relative to the second shell 200 along a first direction, the plug-in portion and the plug-in mating portion are plugged and mated, so that the first shell 100 and the second shell 200 are connected, and when the first shell 100 moves to a second position relative to the second shell 200 along a second direction, the plug-in portion and the plug-in mating portion are separated, so that the first shell 100 and the second shell 200 are separable, so that the first shell 100 and the second shell 200 do not need to be installed by other parts, so that the structure of the infrared detector is relatively simple, and there is no need to use other tools for disassembly and installation, so that the disassembly and installation of the first shell 100 and the second shell 200 are more convenient.

[0030] In an optional embodiment, the plug-in portion and the plug-in fitting portion may be disposed on the inner side of the first housing 100 or the second housing 200, that is, in the direction from the inner surface of the first housing 100 to the outer surface of the first housing 100, or in the direction from the inner surface of the second housing 200 to the outer surface of the second housing 200, the plug-in portion and the plug-in fitting portion protrude from the outer surface of the first housing 100 or the outer surface of the second housing 200. The plug-in portion and the plug-in fitting portion extend along the center direction of the first port 101 or the center direction of the second port 201, and the plug-in fitting portion extends out of the first port 101 or the second port 201, and extends along the surface away from the first port 101 or the surface where the second port 201 is located.

[0031] When the first shell 100 switches between the first position and the second position relative to the second shell 200, the plug-in fitting portion provided in the first shell 100 or the second shell 200 is used to extend into the other of the first shell 100 and the second shell 200, and the plug-in portion and the plug-in fitting portion are plug-fitted in the accommodating space.

[0032] The infrared detector disclosed in the embodiment of the present application is configured such that the plug-in portion and the plug-fitting portion are arranged on the inner side of the first shell 100 or the second shell 200, and extend along the center direction of the first port 101 or the center direction of the second port 201, and the plug-fitting portion extends out of the first port 101 or the second port 201, and extends along the surface away from the first port 101 or the surface where the second port 201 is located, so that after the first shell 100 and the second shell 200 are installed, the plug-in portion and the plug-fitting portion can be hidden in the accommodating space, which is beneficial to improving the appearance of the infrared detector.

[0033] In a more specific embodiment, both the first shell 100 and the second shell 200 may be provided with a plug-in portion and a plug-in mating portion. The plug-in portion provided on the first shell 100 may be a first plug-in portion 311, the plug-in portion provided on the second shell 200 may be a second plug-in portion 312, the plug-in mating portion provided on the first shell 100 may be a first plug-in mating portion 321, and the plug-in mating portion provided on the second shell 200 may be a second plug-in mating portion 322.

[0034] When the first shell 100 switches between the first position and the second position relative to the second shell 200, the direction from the first plug-in portion 311 to the first plug-in mating portion 321 is the same as the first direction, and the direction from the second plug-in mating portion 322 to the second plug-in portion 312 is the same as the first direction, the first plug-in portion 311 is used for plugging and mating with the second plug-in mating portion 322, and the second plug-in portion 312 is used for plugging and mating with the first plug-in mating portion 321.

[0035] The infrared detection disclosed in the embodiment of the present application is plugged and matched with two pairs of plug-in parts and plug-in matching parts when the first shell 100 and the second shell 200 are plugged and matched, so that the connection between the first shell 100 and the second shell 200 is more stable, and the positional relationship between the first plug-in part 311 and the first plug-in matching part 321 and the second plug-in matching part 322 and the second plug-in part 312 is set so that when the first shell 100 is switched between the first position and the second position relative to the second shell 200, the direction from the first plug-in part 311 to the first plug-in matching part 321 is the same as the first direction, and the direction from the second plug-in matching part 322 to the second plug-in part 312 is the same as the first direction, which is conducive to the plug-in matching of the first plug-in part 311 and the second plug-in matching part 322, and the plug-in matching of the second plug-in matching part 322 and the first plug-in part 311.

[0036] In order to make the plug-in mating of the plug-in portion and the plug-in mating portion more accurate during the installation of the first housing 100 and the second housing 200, optionally, a first guide recess 102 may be provided at the first end of the first housing 100, and the first guide recess 102 may extend along the edge of the first port 101. The bottom surface of the first guide recess 102 may face the surface where the first port 101 is located, and a second guide protrusion 202 may be provided at the first end of the second housing 200, and the second guide protrusion 202 may extend along the edge of the second port 201. When the first housing 100 switches between the first position and the second position relative to the second housing 200, the second guide protrusion 202 may be used to extend into the first guide recess 102, and the side wall of the second guide protrusion 202 may be guided and matched with the side wall of the first guide recess 102, so that the first housing 100 moves relative to the second housing 200 in the first direction or the second direction.

[0037] The infrared detector disclosed in the embodiment of the present application is provided with a first guide recess 102 and a second guide protrusion 202, so that when the first shell 100 switches between the first position and the second position relative to the second shell 200, the second guide protrusion 202 can extend into the first guide recess 102, and the side wall of the second guide protrusion 202 can be guided and matched with the side wall of the first guide recess 102, so that the positions of the plug-in portion and the plug-fitting portion are more precise during the movement of the first shell 100 relative to the second shell 200, which is conducive to the accurate plugging of the plug-in portion and the plug-fitting portion.

[0038] Further, the first end of the second shell 200 may be provided with a second guide recess 203, the second guide recess 203 may extend along the edge of the first port, the bottom surface of the second guide recess 203 may face the surface where the second port is located, and the second end of the first shell 100 may be provided with a first guide protrusion 103, the first guide protrusion 103 may extend along the edge of the first port. When the first shell 100 switches between the first position and the second position relative to the second shell 200, the first guide protrusion 103 may be used to extend into the second guide recess 203, and the side wall of the first guide protrusion 103 may be guided and matched with the side wall of the second guide recess 203, so that the first shell 100 moves relative to the second shell 200 in the first direction or the second direction, wherein the direction from the first end of the first shell 100 to the second end of the first shell 100 is the same as the first direction, and the direction from the first end of the second shell 200 to the second end of the second shell 200 is the same as the first direction.

[0039] The infrared detector disclosed in the embodiment of the present application is provided with a second guide recess 203 and a first guide protrusion 103, so that when the first shell 100 switches between a first position and a second position relative to the second shell 200, the first guide protrusion 103 can be used to extend into the second guide recess 203, and the side wall of the first guide protrusion 103 can be guided and matched with the side wall of the second guide recess 203, so that the positions of the plug-in part and the plug-in matching part are more precise during the movement of the first shell 100 relative to the second shell 200.

[0040] In order to prevent the first housing 100 from moving excessively relative to the second housing 200 in the second direction and causing the second end of the first housing 100 to damage the relevant components in the accommodation space, optionally, the end of the first guide recess 102 or the end of the second guide recess 203 has a limiting end surface 106, or the end of the first guide recess 102 and the end of the second guide recess 203 both have a limiting end surface 106. When the first housing 100 moves relative to the second housing 200 in the first direction to the first position, the end of the second guide protrusion 202 is spaced apart from the limiting end surface 106 of the first guide recess 102, or the end of the first guide protrusion 103 is spaced apart from the limiting end surface 106 of the second guide recess 203, or the end of the second guide protrusion 202 is spaced apart from the limiting end surface 106 of the first guide recess 102, and the end of the first guide protrusion 103 is spaced apart from the limiting end surface 106 of the second guide recess 203. When the first shell 100 moves to the second position along the second direction relative to the second shell 200, the end of the second guide protrusion 202 conflicts with the limiting end surface 106 of the first guide recess 102, or the end of the first guide protrusion 103 conflicts with the limiting end surface 106 of the second guide recess 203, or the end of the second guide protrusion 202 conflicts with the limiting end surface 106 of the first guide recess 102, and the end of the first guide protrusion 103 conflicts with the limiting end surface 106 of the second guide recess 203.

[0041] The infrared detector disclosed in the embodiment of the present application is provided with a limiting end surface 106 at the end of the first guide recess 102 or the end of the second guide recess 203, so that when the first shell 100 moves to the second position along the second direction relative to the second shell 200, the end of the second guide protrusion 202 conflicts with the limiting end surface 106 of the first guide recess 102, or the end of the first guide protrusion 103 conflicts with the limiting end surface 106 of the second guide recess 203, thereby preventing the first shell 100 from moving excessively relative to the second shell 200 along the second direction and causing the second end of the first shell 100 to damage the relevant components in the accommodating space.

[0042] In order to make the first housing 100 and the second housing 200 clearly feel that they are in place after being installed, optionally, the first guide protrusion 103 or the second guide protrusion 202 is provided with a first convex bump 104, or the first guide protrusion 103 and the second guide protrusion 202 are both provided with a first convex bump 104, and the side wall of the first guide recess or the side wall of the second guide recess 203 is provided with an avoidance slot 204 and a second convex bump 205, and the second convex bump 205 is provided on the side of the avoidance slot 204 facing the second end of the second housing 200. When the first housing 100 moves to the first position relative to the second housing 200 along the first direction, the first convex bump 104 moves to the side of the second convex bump 205 away from the avoidance slot 204, and the first convex bump 104 and the second convex bump 205 cooperate in the second direction limit position. When the first housing 100 moves to the second position along the second direction relative to the second housing 200 , the first protrusion 104 is located in the avoidance slot 204 and can slide along the avoidance slot 204 .

[0043] The infrared detector disclosed in the embodiment of the present application is provided with an avoidance groove 204 and a second convex bump 205 through the side wall of the first guide recess or the side wall of the second guide recess 203, and the second convex bump 205 is arranged on the side of the avoidance groove 204 facing the second end of the second shell 200, so that when the first shell 100 moves to the first position relative to the second shell 200 along the first direction, the first convex bump 104 moves along the surface of the second convex bump 205 to the side of the second convex bump 205 away from the avoidance groove 204, so that the first shell 100 can obviously feel the action of force when moving relative to the second shell 200 along the first direction, so that it can be determined that the first shell 100 and the second shell 200 are installed in place, and the first convex bump 104 and the second convex bump 205 are matched in the second direction to limit the position, so as to avoid the first shell 100 and the second shell 200 from moving relative to the second shell 200 along the second direction and separating. When the first shell 100 moves to the second position along the second direction relative to the second shell 200, the first protrusion 104 is located in the avoidance groove 204 and can slide along the avoidance groove 204, thereby avoiding interference between the first protrusion 104 and the side wall of the first guide recess 102 or the side wall of the second guide recess 203.

[0044] In a specific embodiment, the sum of the height of the first convex hump 104 and the height of the second convex hump 205 is between 0.6 mm and 0.8 mm. By setting the sum of the height of the first convex hump 104 and the height of the second convex hump 205 to be between 0.6 mm and 0.8 mm, the force felt when the first shell 100 and the second shell 200 are installed in place is not too large or too small.

[0045] In order to further improve the stability of the first shell 100 and the second shell 200 after they are installed in place, optionally, the first shell 100 or the second shell 200 can be provided with a tactile groove 206, and the tactile groove 206 is located on the side of the second convex bump 205 that is away from the avoidance groove 204. When the first shell 100 moves to the first position along the first direction relative to the second shell 200, the first convex bump 104 can move into the tactile groove 206, so that the user can clearly feel the change in force when the first convex bump 104 slides over the second convex bump 205.

[0046] In some cases, there may be an unstable contact problem between the first guide protrusion 103 and the side wall of the second guide recess 203 during sliding fit, which is not conducive to the stable fit between the plug-in part and the plug-in fitting part. In order to enable the plug-in part to fit stably with the plug-in fitting part, the infrared detector may further include a limiting rib 400. The limiting rib 400 may be arranged on the second shell 200. The limiting rib 400 may be spaced apart from the side wall of the second guide recess 203. When the first shell 100 switches between the first position and the second position relative to the second shell 200, the first guide protrusion 103 may be located between the limiting rib 400 and the side wall of the second guide recess 203.

[0047] The infrared detector disclosed in the embodiment of the present application is provided with a limiting rib 400, so that when the first shell 100 switches between the first position and the second position relative to the second shell 200, the first guide protrusion 103 can be located between the limiting rib 400 and the side wall of the second guide recess 203, thereby improving the stability of the relative movement between the first shell 100 and the second shell 200, which is beneficial to the stable cooperation between the plug-in part and the plug-in mating part.

[0048] Optionally, there may be a plurality of limiting ribs 400, and the plurality of limiting ribs 400 may be arranged at intervals along the first direction.

[0049] In order to make the first shell 100 and the second shell 200 slide open and close better, optionally, in the extension direction of the first direction, the edge of the portion surrounding the first port 101 is the first edge 1011, and the two end points of the first edge 1011 (such as Figure 5 The points P1 and P2 shown in FIG. 1 and the midpoint of the first edge 1011 (as shown in FIG. Figure 5 P3 shown in the figure can form a standard circle with a radius of r (such as Figure 5 The a shown is a standard circle), and the maximum radial distance between the first edge 1011 and the standard circle is d, where 0≤d / r≤0.01.

[0050] The infrared detector disclosed in the embodiment of the present application sets the maximum radial distance d between the first edge 1011 and the standard circle to 0≤d / r≤0.01, so that when the first shell 100 moves to the first position relative to the second shell 200 along the first direction, the edge of the first port 101 is butted against the edge of the second port 201, so that the contact area between the edge of the first port 101 and the edge of the second port 201 is larger, which is beneficial to the stability of the installation of the first shell 100 and the second shell 200. In the process of the first shell 100 moving to the second position relative to the second shell 200 along the second direction, the contact area between the edge of the first port 101 and the edge of the second port 201 is smaller, which is beneficial to the disassembly of the first shell 100 and the second shell 200, so that the sliding opening and closing of the first shell 100 and the second shell 200 can be better realized.

[0051] In order to further improve the connection stability between the first shell 100 and the second shell 200, optionally, the first shell 100 can be provided with a first locking portion 105, and the second shell 200 can be provided with a second locking portion 207. The first locking portion 105 is provided with a first through hole, and the second locking portion is provided with a threaded hole. The infrared detector can also include a screw. When the first shell 100 moves to a first position along a first direction relative to the second shell 200, the first through hole is opposite to the threaded hole, and the screw can pass through the first through hole and threadably cooperate with the threaded hole, thereby making the installation of the first shell 100 and the second shell 200 more stable.

[0052] The above embodiments of the present invention focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0053] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. An infrared detector, characterized in that: The invention comprises a first shell (100), a second shell (200) and a plug assembly, wherein the first shell (100) has a first port (101), the second shell (200) has a second port (201), the plug assembly comprises a plug-in portion and a plug-in mating portion, at least one of the first shell (100) and the second shell (200) is provided with the plug-in portion, and the other is provided with the plug-in mating portion which is plug-fitted with the plug-in portion, and the plug-in portion and the plug-in mating portion are respectively provided at the first port (101) or the second port (201); When the first shell (100) moves to a first position relative to the second shell (200) along a first direction, the plug-in portion is plugged into and matched with the plug-in matching portion, so that the first shell (100) and the second shell (200) are connected, and the first shell (100) is limited in position in the first direction, the first port (101) and the second port (201) are docked, and the first shell (100) and the second shell (200) enclose a receiving inner cavity. When the first shell (100) moves to a second position along a second direction relative to the second shell (200), the plug-in portion is separated from the plug-in mating portion, and the first shell (100) and the second shell (200) are separable, wherein the first direction is opposite to the second direction.

2. The infrared detector according to claim 1, characterized in that: The plug-in portion and the plug-in fitting portion are arranged on the inner side of the first shell (100) or the second shell (200), and extend along the center direction of the first port (101) or the center direction of the second port (201); the plug-in fitting portion extends out of the first port (101) or the second port (201), and extends along a surface away from the first port (101) or the second port (201); When the first shell (100) switches between the first position and the second position relative to the second shell (200), the plug-in fitting portion provided in the first shell (100) or the second shell (200) is used to extend into the other of the first shell (100) and the second shell (200), and the plug-in portion and the plug-in fitting portion are plug-fitted in the accommodating space.

3. The infrared detector according to claim 2, characterized in that: The first shell (100) and the second shell (200) are both provided with the plug-in portion and the plug-in mating portion; the plug-in portion provided on the first shell (100) is a first plug-in portion (311), the plug-in portion provided on the second shell (200) is a second plug-in portion (312), the plug-in mating portion provided on the first shell (100) is a first plug-in mating portion (321), and the plug-in mating portion provided on the second shell (200) is a second plug-in mating portion (322), When the first shell (100) switches between the first position and the second position relative to the second shell (200), the direction from the first plug-in portion (311) to the first plug-in mating portion (321) is the same as the first direction, and the direction from the second plug-in mating portion (322) to the second plug-in portion (312) is the same as the first direction, and the first plug-in portion (311) is used for plug-in mating with the second plug-in mating portion (322), and the second plug-in portion (312) is used for plug-in mating with the first plug-in mating portion (321).

4. The infrared detector according to claim 1, characterized in that: A first guide recess (102) is formed at the first end of the first shell (100), and the first guide recess (102) extends along the edge of the first port (101), and the bottom surface of the first guide recess (102) faces the surface where the first port (101) is located; a second guide protrusion (202) is formed at the first end of the second shell (200), and the second guide protrusion (202) extends along the edge of the second port (201). When the first shell (100) switches between the first position and the second position relative to the second shell (200), the second guide protrusion (202) is used to extend into the first guide recess (102), and the side wall of the second guide protrusion (202) is guided and matched with the side wall of the first guide recess (102) so that the first shell (100) moves relative to the second shell (200) along the first direction or the second direction.

5. The infrared detector according to claim 4, characterized in that: A second guide recess (203) is formed at the first end of the second shell (200), and the second guide recess (203) extends along the edge of the first port, and the bottom surface of the second guide recess (203) faces the surface where the second port is located; a first guide protrusion (103) is formed at the second end of the first shell (100), and the first guide protrusion (103) extends along the edge of the first port. When the first shell (100) switches between the first position and the second position relative to the second shell (200), the first guide protrusion (103) is used to extend into the second guide recess (203), and the side wall of the first guide protrusion (103) is guided and matched with the side wall of the second guide recess (203) so that the first shell (100) moves relative to the second shell (200) along the first direction or the second direction, wherein the direction from the first end of the first shell (100) to the second end of the first shell (100) is the same as the first direction, and the direction from the first end of the second shell (200) to the second end of the second shell (200) is the same as the first direction.

6. The infrared detector according to claim 5, characterized in that: The end of the first guide recess (102) and / or the end of the second guide recess (203) has a limiting end surface (106), When the first housing (100) moves relative to the second housing (200) along the first direction to a first position, an end portion of the second guide protrusion (202) is spaced apart from the limiting end surface (106) of the first guide recess (102), and / or an end portion of the first guide protrusion (103) is spaced apart from the limiting end surface (106) of the second guide recess (203). When the first shell (100) moves to the second position along the second direction relative to the second shell (200), the end of the second guide protrusion (202) abuts against the limiting end surface (106) of the first guide recess (102), and / or the end of the first guide protrusion (103) abuts against the limiting end surface (106) of the second guide recess (203).

7. The infrared detector according to claim 5, characterized in that: The first guide protrusion (103) and / or the second guide protrusion (202) is provided with a first convex bump (104), the side wall of the first guide recess (102) or the side wall of the second guide recess (203) is provided with an avoidance slot (204) and a second convex bump (205), and the second convex bump (205) is provided on one side of the avoidance slot (204) facing the second end of the second shell (200); When the first shell (100) moves relative to the second shell (200) to the first position along the first direction, the first convex bump (104) moves to the side of the second convex bump (205) away from the avoidance slot (204), and the first convex bump (104) and the second convex bump (205) cooperate in the second direction in an upper limit position; When the first shell (100) moves to a second position along a second direction relative to the second shell (200), the first convex bump (104) is located in the avoidance slot (204) and can slide along the avoidance slot (204).

8. The infrared detector according to claim 7, characterized in that: The sum of the height of the first convex hump (104) and the height of the second convex hump (205) is between 0.6 mm and 0.8 mm.

9. The infrared detector according to claim 7, characterized in that: The first shell (100) or the second shell (200) is provided with a hand-feeling sliding groove (206), and the hand-feeling sliding groove (206) is located on a side of the second convex bump (205) away from the avoidance slot (204).

10. The infrared detector according to claim 5, characterized in that: The infrared detector further comprises a limiting convex rib (400), wherein the limiting convex rib (400) is arranged on the second shell (200), and the limiting convex rib (400) is spaced apart from the side wall of the second guide recess (203); when the first shell (100) switches between the first position and the second position relative to the second shell (200), the first guide protrusion (103) is located between the limiting convex rib (400) and the side wall of the second guide recess (203).

11. The infrared detector according to claim 10, characterized in that: There are a plurality of the limiting convex ribs (400), and the plurality of the limiting convex ribs (400) are arranged at intervals along the first direction.

12. The infrared detector according to claim 1, characterized in that: In the extension direction of the first direction, the portion of the edge surrounding the first port (101) is the first edge (1011), the two end points of the first edge (1011) and the midpoint of the first edge (1011) can form a standard circle with a radius of r, and the maximum radial distance between the first edge (1011) and the standard circle is d, wherein 0≤d / r≤0.01.

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