A small human infrared sensor fixing structure

Abstract

The utility model discloses a small -size human infrared inductor fixed structure, including shell, and the support piece, PCB board and lens of setting in the shell, the support piece includes base, the fixed connection of a plurality of rib plate in the base one end, and the recess platform of setting in a plurality of base other end, the rib plate is provided with top surface, and the top surface is fixedly connected with first buckle, and the PCB board is provided with the notched of first buckle joint, and the end of lens is provided with the boss, and the inner wall of shell one end is provided with the top platform, and the inner wall of other end is provided with a plurality of second buckle, part first buckle passes through the notched and abuts to one end of boss, and the top platform abuts to the other end of boss, and second buckle is jointed with recess platform. The structure is through the rib plate on the support piece and supports the PCB board, and utilizes first buckle and the notched cooperation of PCB board setting and realizes the locking, need not additional fastener, greatly optimized internal space utilization, can realize small -size human infrared inductor's PCB board and lens in the stable installation of narrow space.

Description

Technical Field

[0001] This utility model relates to a fixing structure for a small human infrared sensor, belonging to the field of sensor technology. Background Technology

[0002] Currently, small human infrared sensors suffer from limited internal operating space due to overall structural size constraints, making it difficult to achieve precise positioning and stable fixation of the PCB board. Furthermore, the lens component lacks an effective fixation method in existing structures, making it prone to displacement due to vibration or assembly errors, thus affecting the accuracy and reliability of infrared sensing.

[0003] Traditional fixing methods typically require multiple auxiliary parts or complex assembly structures, which not only increases material costs and assembly difficulty but also further complicates the process implementation within limited space. Therefore, there is an urgent need for a compact, easy-to-assemble, and highly reliable fixing solution to address the stable installation problem of the PCB board and lens in confined spaces. Utility Model Content

[0004] To address the aforementioned issues, this invention provides a fixing structure for a small human infrared sensor, effectively overcoming the problem of unstable fixing of the PCB and lens in a limited space in existing small human infrared sensors.

[0005] This utility model provides a fixing structure for a small human infrared sensor, including a shell, a support member, a PCB board, and a lens disposed within the shell. The support member includes a base, several stiffeners fixedly connected to one end of the base, and several recesses disposed at the other end of the base. The stiffeners have a top surface, and a first buckle is fixedly connected to the top surface. The PCB board has a slot for engaging with the first buckle. The end of the lens has a boss. The inner wall of one end of the shell has a top platform, and the inner wall of the other end has several second buckles. Some of the first buckles pass through the slot and abut against one end of the boss, the top platform abuts against the other end of the boss, and the second buckles engage with the recesses.

[0006] In one embodiment of this utility model, the top surface abuts against the PCB board.

[0007] In one embodiment of this utility model, a plurality of the ribs are arranged in a ring around the top of the base.

[0008] In one embodiment of this utility model, the cross-sectional area of ​​the first buckle is smaller than the area of ​​the top surface.

[0009] In one embodiment of this utility model, a plurality of the slots are engaged with a plurality of the first buckles one by one, and a portion of the structure of each first buckle passes through the slot and abuts against one end of the boss.

[0010] In one embodiment of this utility model, the end of the lens away from the protrusion is configured as a spherical surface, and the protrusion is arranged around the bottom surface of the lens.

[0011] In one embodiment of this utility model, the outer shell is a hollow cylindrical structure, the support frame, the PCB board, and the protrusion of the lens are disposed inside the outer shell, and the spherical surface of the lens extends out of the top platform of the outer shell.

[0012] In one embodiment of this utility model, the top platform is disposed on the inner wall of one end of the hollow cylindrical structure shell, a plurality of second buckles are disposed on the inner wall of the other end of the hollow cylindrical structure shell, a plurality of recesses are circumferentially disposed on the end of the base away from the rib plate, and the plurality of second buckles are engaged with the plurality of recesses one by one.

[0013] In one embodiment of this utility model, the top platform is a circular ring structure.

[0014] In one embodiment of this utility model, the boss is a ring-shaped structure.

[0015] This utility model has the following beneficial effects:

[0016] The small human infrared sensor fixing structure provided by this utility model has the following advantages:

[0017] 1. High structural integration and space saving: The PCB board is supported by the rib plate on the support component, and the locking is achieved by the first buckle cooperating with the slot set on the PCB board. No additional fasteners are required, which greatly optimizes the use of internal space. It is suitable for highly compact product structures, and the installation is simple and convenient. It can realize the stable installation of the PCB board and lens of small human infrared sensor in narrow spaces.

[0018] 2. Easy assembly and improved production efficiency: The support components serve to fix the PCB board and support the lens. The modular design of the overall structure significantly simplifies the assembly process, reduces manual operation, and lowers assembly costs and error rates.

[0019] 3. Significantly enhanced stability: The PCB board is secured by a double method of first buckle and slot to prevent loosening; the protrusion of the lens fits tightly with the first buckle on the top of the support and the top platform of the housing, ensuring the precise positioning of the optical components and improving the stability and reliability of infrared sensing.

[0020] 4. High applicability: It adopts a universal snap-fit ​​structure, which is highly compatible and easy to adapt to the design needs of various small infrared sensing products. Attached Figure Description

[0021] Figure 1 A perspective view of the fixing structure of the small human infrared sensor provided by this utility model.

[0022] Figure 2 A perspective view of the assembly of the outer shell, support components, PCB board, and lens provided for this utility model.

[0023] Figure 3 A perspective view of the connection between the support component, PCB board, and lens provided by this utility model.

[0024] Figure 4 An exploded view of the fixing structure of the small human infrared sensor provided by this utility model.

[0025] Figure 5 An exploded view of the small human infrared sensor fixing structure provided by this utility model.

[0026] In the diagram: 1. Support component; 11. Rib plate; 111. Top surface; 12. First buckle; 13. Recess; 14. Base; 2. PCB board; 21. Slot; 3. Lens; 31. Boss; 4. Outer shell; 41. Second buckle; 42. Top platform. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] like Figures 1 to 5 As shown, this utility model provides a small human infrared sensor fixing structure, including a housing 4, a support member 1, a PCB board 2, and a lens 3 disposed within the housing 4. The support member 1 includes a base 14, a plurality of ribs 11 fixedly connected to one end of the base 14, and a plurality of recesses 13 disposed at the other end of the base 14. The ribs 11 are provided with a top surface 111, and a first buckle 12 is fixedly connected to the top surface 111. The PCB board 2 is provided with a slot 21 for engaging with the first buckle 12. The end of the lens 3 is provided with a boss 31. The inner wall of one end of the housing 4 is provided with a top platform 42, and the inner wall of the other end is provided with a plurality of second buckles 41. Some of the first buckles 12 pass through the slot 21 and abut against one end of the boss 31. The top platform 42 abuts against the other end of the boss 31, and the second buckles 41 engage with the recesses 13.

[0031] In some embodiments, the top surface 111 abuts against the PCB board 2.

[0032] In this embodiment, the PCB board 2 is mounted on the support member 1, and part of the structure of the first buckle 12 fixedly connected on the top surface 111 passes through the slot 21 provided on the PCB board 2, and the top surface 111 is in contact with the bottom surface of the PCB board 2.

[0033] In some embodiments, a plurality of the stiffening plates 11 are uniformly arranged in a ring around the top of the base 14.

[0034] In this embodiment, the PCB board 2 is a disc-shaped structure, and the top surface 111 of several stiffeners 11 supports the disc-shaped PCB board 2 in a ring shape, thereby making the PCB board 2 firmly abut against the top surface 111 of several stiffeners 11.

[0035] In some embodiments, the cross-sectional area of ​​the first buckle 12 is smaller than the area of ​​the top surface 111. This structural arrangement allows part of the top surface 111 to protrude, thereby supporting the PCB board 2, wherein the rib 11 serves to strengthen the fixation.

[0036] In some embodiments, a plurality of the slots 21 are engaged with a plurality of the first buckles 12 one by one, and a portion of the structure of each first buckle 12 passes through the slot 21 and abuts against one end of the boss 31.

[0037] In some embodiments, the end of the lens 3 away from the protrusion 31 is configured as a spherical surface, and the protrusion 31 is disposed around the bottom surface of the lens 3.

[0038] In some embodiments, the housing 4 is a hollow cylindrical structure, the support frame 1, the PCB board 2, and the protrusion 31 of the lens 3 are disposed inside the housing 4, and the spherical surface of the lens 3 extends out of the top platform 42 of the housing 4.

[0039] In some embodiments, the top platform 42 is disposed on the inner wall of one end of the hollow cylindrical shell 4, a plurality of second buckles 41 are disposed on the inner wall of the other end of the hollow cylindrical shell 4, a plurality of recesses 13 are circumferentially disposed on one end of the base 14 away from the stiffener 11, and the plurality of second buckles 41 are engaged with the plurality of recesses 13 one by one.

[0040] In some embodiments, the top platform 42 is an annular structure.

[0041] In some embodiments, the boss 31 is an annular structure.

[0042] The working principle of the small human infrared sensor fixing structure provided by this utility model is as follows: The PCB board 2 is supported by the top surface 111 of the rib plate 11 of the support member 1. The PCB board 2 has a slot 21. The PCB board 2 is installed on the support member 1. The first buckle 12 on the support member 1 engages with the slot 21, thereby completely fixing the PCB board 2 on the support member 1. The lens 3 is installed into the top of the housing 4, so that the top platform 42 of the housing 4 and the protrusion 31 of the lens 3 are tightly fitted. Then, the protrusion 31 of the lens 3 is held in place by the buckle 12 on the top of the support member 1. Finally, the second buckle 41 inside the housing 4 is fastened into the recess 13 of the support member 1, thus completing the installation of the small human infrared sensor fixing structure.

[0043] In summary, this small human infrared sensor mounting structure has the following advantages:

[0044] 1. High structural integration and space saving: The PCB board 2 is supported by the stiffener 11 on the support member 1, and the locking is achieved by the first buckle 12 cooperating with the slot 21 set on the PCB board 2. No additional fasteners are required, which greatly optimizes the use of internal space. It is suitable for highly compact product structures, and the installation is simple and convenient. It can realize the stable installation of the PCB board 2 and lens 3 of the small human infrared sensor in a narrow space.

[0045] 2. Easy assembly and improved production efficiency: The support component 1 serves to fix the PCB board 2 and support the lens 3. The modular design of the overall structure significantly simplifies the assembly process, reduces manual operation, and lowers assembly costs and error rate.

[0046] 3. Significantly enhanced stability: The PCB board 2 is prevented from loosening by the double fixing method of the first buckle 12 and the slot 21; the protrusion 31 of the lens 3 is closely fitted with the first buckle 12 on the top of the support 1 and the top platform 42 of the housing 4, ensuring the precise position of the optical components and improving the stability and reliability of infrared sensing.

[0047] 4. High applicability: It adopts a universal snap-fit ​​structure, which is highly compatible and easy to adapt to the design needs of various small infrared sensing products.

[0048] This document uses specific embodiments to illustrate the principles and implementation methods of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A fixing structure for a small human infrared sensor, characterized in that, The device includes a housing, a support member, a PCB board, and a lens disposed within the housing. The support member includes a base, several stiffeners fixedly connected to one end of the base, and several recesses disposed at the other end of the base. The stiffeners have a top surface, and a first buckle is fixedly connected to the top surface. The PCB board has a slot for engaging with the first buckle. The end of the lens has a boss. The inner wall of one end of the housing has a top platform, and the inner wall of the other end has several second buckles. Some of the first buckles pass through the slot and abut against one end of the boss. The top platform abuts against the other end of the boss, and the second buckles engage with the recesses.

2. The fixing structure for a small human infrared sensor according to claim 1, characterized in that, The top surface abuts against the PCB board.

3. The fixing structure for a small human infrared sensor according to claim 2, characterized in that, Several of the aforementioned stiffening plates are arranged in a ring around the top of the base.

4. The fixing structure for a small human infrared sensor according to claim 3, characterized in that, The cross-sectional area of ​​the first buckle is smaller than the area of ​​the top surface.

5. The fixing structure for a small human infrared sensor according to claim 4, characterized in that, Several slots are engaged with several first buckles one by one, and a portion of the structure of each first buckle passes through the slot and abuts against one end of the boss.

6. The fixing structure for a small human infrared sensor according to claim 5, characterized in that, The end of the lens away from the protrusion is spherical, and the protrusion is arranged around the bottom surface of the lens.

7. The fixing structure for a small human infrared sensor according to claim 6, characterized in that, The outer shell is a hollow cylindrical structure. The support, PCB board, and the protrusion of the lens are disposed inside the outer shell, and the spherical surface of the lens extends out of the top platform of the outer shell.

8. The fixing structure for a small human infrared sensor according to claim 7, characterized in that, The top platform is disposed on the inner wall of one end of the hollow cylindrical structure shell, a plurality of second buckles are disposed on the inner wall of the other end of the hollow cylindrical structure shell, a plurality of recesses are circumferentially disposed on the end of the base away from the stiffener, and the plurality of second buckles are engaged with the plurality of recesses one by one.

9. A small human infrared sensor fixing structure according to any one of claims 1-8, characterized in that, The top platform has a circular ring structure.

10. A small human infrared sensor fixing structure according to any one of claims 1-8, characterized in that, The boss has a ring-shaped structure.

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