A compact filter sensor

Abstract

This utility model discloses a compact filter sensor, relating to the field of filter sensor technology. It includes a housing with a mounting base at one end. An installation mechanism is installed inside the housing, and a positioning mechanism is provided outside the installation mechanism. The positioning mechanism includes a fixing collar. In this utility model, a metal shielding sheet is installed on the inner wall of the housing. A connecting plate is inserted into the housing. A positioning block contacts the inner side of the housing, causing a positioning spring to deform. After the positioning block contacts the positioning groove, the deformed positioning spring's elastic force pushes the positioning block into the positioning groove, thereby positioning the positioning mechanism. Multiple connecting plates are fitted with the inner ring surface of the metal shielding sheet, positioning the metal shielding sheet between the housing and the connecting plates, ensuring it fits snugly against the inside of the housing and improving the shielding effect.

Description

Technical Field

[0001] This utility model relates to the field of filter sensor technology, and in particular to a compact filter sensor. Background Technology

[0002] A filter sensor is a device or apparatus that integrates signal filtering and sensing functions. Its core function is to perform real-time filtering of the sensing signal while sensing external physical quantities, so as to improve the quality and reliability of the output signal.

[0003] For example, CN222652251U discloses a compact filter sensor, including a sensor housing, a circuit board inside the sensor housing, a mounting base installed at one end of the circuit board, the mounting base being threadedly connected to the sensor housing, a metal mesh cover filling the inner cavity of the sensor housing, the metal mesh cover being attached to the inner wall of the sensor housing, and a filter circuit being installed inside the circuit board.

[0004] In the prior art, electromagnetic shielding is achieved by installing a metal mesh cover that fits against the inner wall of the sensor housing. However, during installation, due to the dimensional tolerance of the housing or the inconsistent elastic deformation of the mesh cover, the deformation difference of different parts of the mesh cover after being compressed can cause local bulges, resulting in a loose fit in some areas, which affects the shielding effect. At the same time, it may also cause the mesh cover to come into contact with the circuit board, interfering with the stability of the shielding layer. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art where inconsistent shell size tolerances or mesh elastic deformation can lead to poor local fit and affect the shielding effect, and to propose a compact filter sensor.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a compact filter sensor, including a housing, a mounting base installed at one end of the housing, a mounting mechanism installed inside the housing, a positioning mechanism provided outside the mounting mechanism, the positioning mechanism including a fixing collar, a fixing plate fixedly connected to one end of the fixing collar, a moving rod slidably connected to the fixing plate, a moving plate fixedly connected to one end of the moving rod, a positioning block fixedly connected to one end of the moving plate, a positioning groove opened on the inner side of the housing, the positioning block inserted into the inside of the positioning groove, and a connecting plate fixedly connected to the other end of the fixing collar.

[0007] Preferably, the outer side of the connecting plate is provided with a locking groove.

[0008] Preferably, a positioning spring is sleeved on the outside of the moving rod, and the positioning spring is disposed between the fixed plate and the moving plate.

[0009] Preferably, the installation mechanism includes a circuit board, with protective heads fixedly connected to both ends of the circuit board, positioning covers inserted into one end of each of the two protective heads, and a movable disk fixedly connected to one end of each of the two positioning covers.

[0010] Preferably, one side of the movable disk is slidably connected to the outside of the connecting plate, and a first spring is installed between the other end of the movable disk and the outer shell.

[0011] Preferably, one end of another movable disk is fixedly connected to a telescopic rod, one end of the telescopic rod is fixedly connected to a fixed disk, and one end of the fixed disk is fixedly connected to one end of the mounting base.

[0012] Preferably, a second spring is sleeved on the outside of the telescopic rod, and the second spring is disposed between the movable plate and the fixed plate.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, a metal shielding sheet is installed on the inner wall of the outer shell, a connecting plate is inserted into the outer shell, and a positioning block contacts the inner side of the outer shell, pushing the positioning spring to deform. After the positioning block contacts the positioning groove, the elastic force of the deformed positioning spring pushes the positioning block to be inserted into the inside of the positioning groove, thereby positioning the position of the positioning mechanism. By having multiple connecting plates fit against the inner ring surface of the metal shielding sheet, the metal shielding sheet is positioned between the outer shell and the connecting plate, keeping it in close contact with the inside of the outer shell and improving the shielding effect.

[0015] 2. In this utility model, a protective head is inserted into the inside of the positioning cover, the mounting base is connected to the outer shell, and another protective head is inserted into the inside of another positioning cover. The first spring is compressed and deformed, the second spring is compressed and deformed, and the elastic force of the first spring and the second spring can position the circuit board and limit the displacement of the circuit board. The protective head is used to protect the circuit board and keep the circuit board at a safe distance from the metal shielding plate. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of a compact filter sensor is provided for this utility model;

[0017] Figure 2 This utility model provides a disassembly diagram of a compact filter sensor.

[0018] Figure 3 This utility model provides a schematic diagram of the connection structure of the positioning mechanism for a compact filter sensor;

[0019] Figure 4 This utility model presents a schematic diagram of the disassembly structure of the mounting mechanism for a compact filter sensor.

[0020] Legend: 1. Outer shell; 2. Mounting base; 3. Positioning mechanism; 31. Positioning groove; 32. Fixing collar; 33. Positioning block; 34. Fixing plate; 35. Connecting plate; 36. Locking groove; 37. Positioning spring; 38. Moving plate; 39. Moving rod; 4. Mounting mechanism; 41. Circuit board; 42. Protective head; 43. Positioning cover; 44. First spring; 45. Moving plate; 46. Fixing plate; 47. Second spring; 48. Telescopic rod. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: As Figures 1-4 As shown, this utility model provides a compact filter sensor, including a housing 1, a mounting base 2 installed at one end of the housing 1, a mounting mechanism 4 installed inside the housing 1, and a positioning mechanism 3 provided outside the mounting mechanism 4. The positioning mechanism 3 includes a fixing collar 32, a fixing plate 34 fixedly connected to one end of the fixing collar 32, a moving rod 39 slidably connected to the fixing plate 34, a moving plate 38 fixedly connected to one end of the moving rod 39, and a positioning block 33 fixedly connected to one end of the moving plate 38. A positioning groove 31 is opened on the inner side of the housing 1, and the positioning block 33 is inserted into the inside of the positioning groove 31. A connecting plate 35 is fixedly connected to the other end of the fixing collar 32. A locking groove 36 is opened on the outer side of the connecting plate 35. A positioning spring 37 is sleeved on the outside of the moving rod 39 and is disposed between the fixing plate 34 and the moving plate 38.

[0024] First, the metal shielding sheet is installed on the inner wall of the outer shell 1. The metal shielding sheet is stamped and can adapt to the shape of the shell. The connecting plate 35 is inserted into the outer shell 1. A locking groove 36 is provided on the outer side of the connecting plate 35 to reduce the movement of the metal shielding sheet. After the connecting plate 35 is inserted into the inner side of the outer shell 1, the positioning block 33 contacts the inner side of the outer shell 1, pushing the positioning spring 37 to deform. The moving rod 39 slides on the fixed plate 34 until the positioning block 33 contacts the positioning groove 31. The elastic force of the deformed positioning spring 37 pushes the positioning block 33 to be inserted into the inner side of the positioning groove 31, thereby positioning the position of the positioning mechanism 3. By having multiple connecting plates 35 fit against the inner ring surface of the metal shielding sheet, the metal shielding sheet is positioned between the outer shell 1 and the connecting plate 35, so that it fits against the inside of the outer shell 1, improving the shielding effect.

[0025] Example 2: Figures 1-4 As shown, the mounting mechanism 4 includes a circuit board 41, with protective heads 42 fixedly connected to both ends of the circuit board 41. One end of each protective head 42 is inserted into a positioning cover 43, and one end of each positioning cover 43 is fixedly connected to a movable disk 45. One movable disk 45 is slidably connected to the outside of the connecting plate 35, and a first spring 44 is installed between the other end of the movable disk 45 and the outer shell 1. One end of the other movable disk 45 is fixedly connected to a telescopic rod 48, and one end of the telescopic rod 48 is fixedly connected to a fixed disk 46. One end of the fixed disk 46 is fixedly connected to one end of the mounting base 2. A second spring 47 is sleeved on the outside of the telescopic rod 48 and is disposed between the movable disk 45 and the fixed disk 46.

[0026] The protective head 42 at one end of the circuit board 41 is inserted into the positioning cover 43 inside the outer casing 1. Through the installation of the mounting base 2 and the outer casing 1, the protective head 42 at the other end of the circuit board 41 is inserted into another positioning cover 43. The first spring 44 is compressed and deformed, and the moving disk 45 slides outside the connecting plate 35. The second spring 47 is compressed and deformed, and the telescopic rod 48 retracts, thereby positioning the circuit board 41 and limiting the displacement of the circuit board 41. The protective heads 42 installed at both ends of the circuit board 41 are used to protect the circuit board 41, keep the circuit board 41 at a safe distance from the metal shielding sheet, and prevent accidental contact between the circuit board 41 and the metal shielding sheet.

[0027] The usage method and working principle of this device are as follows: First, install the metal shielding sheet on the inner wall of the outer shell 1, insert the connecting plate 35 into the outer shell 1, and make the positioning block 33 contact the inner side of the outer shell 1, pushing the positioning spring 37 to deform. When the positioning block 33 contacts the positioning groove 31, the deformed positioning spring 37 pushes the positioning block 33 to insert into the inside of the positioning groove 31, positioning the position of the positioning mechanism 3 and positioning the metal shielding sheet between the outer shell 1 and the connecting plate 35. Then, insert a protective head 42 into the inside of the positioning cover 43, install the mounting base 2 at one end of the outer shell 1, and insert another protective head 42 into the inside of another positioning cover 43. The first spring 44 is compressed and deformed, and the second spring 47 is compressed and deformed. The elastic force of the first spring 44 and the second spring 47 positions the circuit board 41 and restricts the displacement of the circuit board 41.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A compact filter sensor, comprising a housing (1), characterized in that: A mounting base (2) is installed at one end of the outer shell (1). An installation mechanism (4) is installed inside the outer shell (1). A positioning mechanism (3) is provided outside the installation mechanism (4). The positioning mechanism (3) includes a fixing collar (32). A fixing plate (34) is fixedly connected to one end of the fixing collar (32). A moving rod (39) is slidably connected to the fixing plate (34). A moving plate (38) is fixedly connected to one end of the moving rod (39). A positioning block (33) is fixedly connected to one end of the moving plate (38). A positioning groove (31) is opened on the inner side of the outer shell (1). The positioning block (33) is inserted into the inside of the positioning groove (31). A connecting plate (35) is fixedly connected to the other end of the fixing collar (32).

2. A compact filter sensor according to claim 1, characterized in that: A slot (36) is provided on the outer side of the connecting plate (35).

3. A compact filter sensor according to claim 1, characterized in that: A positioning spring (37) is sleeved on the outside of the moving rod (39), and the positioning spring (37) is located between the fixed plate (34) and the moving plate (38).

4. A compact filter sensor according to claim 1, characterized in that: The mounting mechanism (4) includes a circuit board (41), with protective heads (42) fixedly connected to both ends of the circuit board (41), a positioning cover (43) inserted into one end of each of the two protective heads (42), and a movable disk (45) fixedly connected to one end of each of the two positioning covers (43).

5. A compact filter sensor according to claim 4, characterized in that: One side of the movable disk (45) is slidably connected to the outside of the connecting plate (35), and a first spring (44) is installed between the other end of the movable disk (45) and the outer shell (1).

6. A compact filter sensor according to claim 4, characterized in that: Another movable disk (45) has a telescopic rod (48) fixedly connected to one end, and a fixed disk (46) fixedly connected to one end of the telescopic rod (48), and one end of the fixed disk (46) fixedly connected to one end of the mounting base (2).

7. A compact filter sensor according to claim 6, characterized in that: A second spring (47) is sleeved on the outside of the telescopic rod (48), and the second spring (47) is located between the movable disk (45) and the fixed disk (46).

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