A filter

Abstract

This utility model relates to the field of filter technology, specifically a filter, including a housing and a circuit board inside the housing. Connecting cable mating structures are installed on both sides of the housing. Each mating structure includes an insulating sleeve, and the insulating sleeves are installed on both sides of the housing. A connector is fixed within each insulating sleeve, and the connector is electrically connected to the circuit board. The insulating sleeve has two L-shaped limiting grooves, each containing a locking block. The locking block is fixed to an insulating plug, which abuts against the insulating sleeve. A connector is fixed inside the insulating plug, abutting against the connector, and a cable is fixed to the connector. Because the connector can be separated from the connector, there is no obstruction during cable installation, making cable installation more convenient and improving connection efficiency. Furthermore, the fixed connection position of the insulating plug and insulating sleeve ensures the connection stability between the connector and the connector, improving connection quality.

Description

Technical Field

[0001] This utility model relates to a filter, specifically a filter, and belongs to the field of filter technology. Background Technology

[0002] A filter is a filtering circuit composed of capacitors, inductors, and resistors. A filter can effectively filter out a specific frequency point or frequencies other than that frequency point in a power line to obtain a power signal of a specific frequency, or eliminate a power signal after a specific frequency.

[0003] However, the existing filter terminals consist of a connector and a nut. The nut is threaded to the connector, and the nut abuts against the cable, fixing the cable to the connector. Since the connectors are located at both ends of the filter, they can obstruct the connection of the cable. Furthermore, the nut needs to be rotated multiple times to secure the cable. The fixing force between the cable and the connector cannot be controlled, and if the connection is not secure, it can affect the connection effect. Therefore, a filter is needed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a filter to solve the above problems. Since the connector can be separated from the mating head, there is no obstruction when installing cables, making cable installation more convenient and improving connection efficiency. In addition, the insulating plug and insulating sleeve are fixed in position each time they are connected, ensuring the connection stability between the mating head and the connector and improving the connection quality.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a filter, comprising a housing and a circuit board inside the housing, the circuit board having a filter circuit composed of capacitors, inductors, and resistors, and a docking structure for connecting cables installed on both sides of the housing, the docking structure including an insulating sleeve, the insulating sleeves being installed on both sides of the housing, a connector being fixed in the insulating sleeve, the connector being electrically connected to the circuit board, the insulating sleeve having two limiting grooves, the limiting grooves being L-shaped, a locking block being engaged in the limiting groove, the locking block being fixed to an insulating plug, the insulating plug abutting against the insulating sleeve, a connector being fixed inside the insulating plug, the connector abutting against the connector, and a cable being fixed on the connector.

[0006] Preferably, in order to facilitate the fixing of the cable to the connector, the cable extends to the middle of the connector, and the insulating plug is threaded with a bolt that abuts against the cable.

[0007] Preferably, in order to facilitate the docking of the locking block and the limiting groove, the cross-section of the locking block is trapezoidal, and the locking block is symmetrically arranged about the insulating plug.

[0008] Preferably, in order to increase the contact area with the connector and improve conductivity, a mating cover is fixed on the connector head, the mating cover abuts against the connector, and the mating cover is provided with multiple grooves at equal intervals.

[0009] Preferably, in order to facilitate protection of the cable connection location, the cable passes through the protective sleeve, and the protective sleeve is threadedly connected to the insulating sleeve.

[0010] Preferably, in order to facilitate the installation of the filter, mounting seats are provided on both sides of the housing, and the mounting seats are provided with waist-shaped grooves.

[0011] Preferably, in order to improve the overall heat dissipation performance, a cover plate is installed on the outer casing, and heat dissipation fins are fixed at the bottom of the circuit board.

[0012] The beneficial effects of this utility model are as follows: Insulating sleeves are installed on both sides of the outer shell, and a connector is fixed in the insulating sleeve. The connector is electrically connected to the circuit board. The insulating sleeve is provided with two limiting grooves, which are L-shaped. A locking block is engaged in the limiting groove, and the locking block is fixed to the insulating plug. The insulating plug abuts against the insulating sleeve. A connector is fixed inside the insulating plug, and the connector abuts against the connector. A cable is fixed on the connector. When connecting the cable to the connector, the connector can be separated from the connector, so there is no obstruction when installing the cable, making the cable installation more convenient. After the cable is installed, hold the insulating plug and let the locking block on the insulating plug enter from the vertical section of the limiting groove. After the locking block enters the limiting groove, rotate the insulating plug. The insulating plug drives the locking block to slide in the horizontal position of the limiting groove, so that the insulating plug connects to the insulating sleeve. This improves the connection efficiency. Moreover, the connection position of the insulating plug and the insulating sleeve is fixed each time, which ensures the connection stability of the connector and the connector and improves the connection quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is an overall cross-sectional view of the present invention;

[0015] Figure 3 for Figure 2 The diagram shown is an enlarged view of the structure of part A.

[0016] Figure 4 This is an exploded view of the limiting groove and the locking block of this utility model;

[0017] Figure 5 This is a schematic diagram of the connection structure between the insulating plug and the locking block of this utility model;

[0018] Figure 6 This is a schematic diagram of the connection structure between the limiting groove and the locking block of this utility model.

[0019] In the diagram: 1. Outer shell; 2. Circuit board; 3. Heat sink fins; 4. Mounting base; 5. Docking structure; 501. Insulating sleeve; 502. Connector; 503. Limiting groove; 504. Locking block; 505. Insulating plug; 506. Connector head; 507. Docking cover; 508. Groove; 6. Protective sleeve; 7. Cable; 8. Cover plate. Detailed Implementation

[0020] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-6 As shown, a filter includes a housing 1 and a circuit board 2 inside the housing 1. The circuit board 2 has a filter circuit composed of capacitors, inductors, and resistors. Connecting structures 5 for connecting cables 7 are installed on both sides of the housing 1. Each connecting structure 5 includes an insulating sleeve 501. A connector 502 is fixed within each insulating sleeve 501 and electrically connected to the circuit board 2. Two L-shaped limiting grooves 503 are provided on each insulating sleeve 501. A locking block 504 engages within each limiting groove 503 and is fixed to an insulating plug 505. The insulating plug 505 abuts against the insulating sleeve 501. A connector 506 is fixed inside the insulating plug 505 and connects to the connector. 502 contact, the connector 506 is fixed with cable 7, the cross-section of the locking block 504 is trapezoidal, the locking block 504 is symmetrically arranged about the insulating plug 505; after the cable 7 is installed, hold the insulating plug 505 and let the locking block 504 on the insulating plug 505 enter from the vertical section of the limiting groove 503. After the locking block 504 enters the limiting groove 503, rotate the insulating plug 505. Since the cross-section of the locking block 504 is trapezoidal and one side of the locking block 504 is inclined, it is easier for the insulating plug 505 to drive the locking block 504 to slide in the horizontal position of the limiting groove 503, so that the insulating plug 505 connects with the insulating sleeve 501, which improves the connection efficiency. Moreover, the connection position of the insulating plug 505 and the insulating sleeve 501 is fixed each time, which ensures the connection stability of the connector 502 and the connector 506 and improves the connection quality.

[0022] As a technical optimization of this utility model, the cable 7 extends to the middle of the connector 506, and a bolt is threaded onto the insulating plug 505, with the bolt abutting against the cable 7; the cable 7 is fixed to the connector 506 by the bolt. When the cable 7 is connected to the connector 506, since the connector 506 can be separated from the mating head 502, there is no obstruction when installing the cable 7, making the installation of the cable 7 more convenient.

[0023] As a technical optimization of this utility model, a mating cover 507 is fixed on the connector 506. The mating cover 507 abuts against the mating head 502. The mating cover 507 is provided with a plurality of grooves 508 at equal intervals. When the connector 506 is connected to the mating head 502, the mating cover 507 is connected to the mating head 502, which further increases the contact area and improves the electrical connection effect. The grooves 508 on the mating cover 507 allow the mating cover 507 to deform in the circumferential direction, which facilitates the connection between the mating cover 507 and the mating head 502.

[0024] As a technical optimization of this utility model, the cable 7 passes through the protective sleeve 6, and the protective sleeve 6 is threadedly connected to the insulating sleeve 501; by rotating the protective sleeve 6, the protective sleeve 6 is threadedly connected to the insulating sleeve 501, and the connection position is protected by the protective sleeve 6.

[0025] As a technical optimization of this utility model, the outer shell 1 is provided with mounting seats 4 on both sides, and the mounting seats 4 are provided with waist-shaped grooves; the mounting seats 4 are fixed in a designated position by bolts passing through the waist-shaped grooves on the mounting seats 4.

[0026] As a technical optimization of this utility model, a cover plate 8 is installed on the outer shell 1, and heat dissipation fins 3 are fixed at the bottom of the circuit board 2; thus improving the overall heat dissipation.

[0027] In use, the mounting base 4 is fixed in a designated position by bolts passing through the waist-shaped groove on the mounting base 4. The corresponding cable 7 is inserted into the connector 506, and then the cable 7 is fixed to the connector 506 by bolts. When connecting the cable 7 to the connector 506, since the connector 506 can be separated from the mating head 502, there is no obstruction when installing the cable 7, making the installation of the cable 7 more convenient. After the cable 7 is installed, hold the insulating plug 505 and let the locking block 504 on the insulating plug 505 enter from the vertical section of the limiting groove 503. After the locking block 504 enters the limiting groove 503, rotate the insulating plug 505. Since the cross-section of the locking block 504 is trapezoidal and one side of the locking block 504 is inclined, the insulating plug 505 can more easily drive the locking block 504 in the limiting groove 503. 03. Horizontal sliding allows the insulating plug 505 to connect with the insulating sleeve 501, improving connection efficiency. The fixed connection position of the insulating plug 505 and insulating sleeve 501 ensures the connection stability of the mating head 502 and the connector 506, improving connection quality. When the connector 506 connects with the mating head 502, the mating cover 507 connects with the mating head 502, further increasing the contact area and improving electrical connection. The mating cover 507 has a groove 508, allowing it to deform circumferentially, facilitating connection between the mating cover 507 and the mating head 502. Then, the protective sleeve 6 is rotated to connect with the insulating sleeve 501 via a thread. The protective sleeve 6 protects the connection position. The bottom of the circuit board 2 has heat dissipation fins 3, improving overall heat dissipation.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A filter, comprising a housing (1) and a circuit board (2) inside the housing (1), wherein the circuit board (2) is provided with a filter circuit consisting of a capacitor, an inductor, and a resistor, characterized in that: The outer shell (1) has a docking structure (5) for connecting cables (7) installed on both sides. The docking structure (5) includes an insulating sleeve (501). The outer shell (1) has an insulating sleeve (501) installed on both sides. A connector (502) is fixed in the insulating sleeve (501). The connector (502) is electrically connected to the circuit board (2). The insulating sleeve (501) has two limiting grooves (503). The limiting grooves (503) are L-shaped. A locking block (504) is engaged in the limiting groove (503). The locking block (504) is fixed to the insulating plug (505). The insulating plug (505) abuts against the insulating sleeve (501). A connector (506) is fixed inside the insulating plug (505). The connector (506) abuts against the connector (502). A cable (7) is fixed on the connector (506).

2. The filter according to claim 1, characterized in that: The cable (7) extends to the middle of the connector (506), and a bolt is threaded onto the insulating plug (505), which abuts against the cable (7).

3. A filter according to claim 1, characterized in that: The cross-section of the card block (504) is trapezoidal, and the card block (504) is symmetrically arranged about the insulating plug (505).

4. A filter according to claim 1, characterized in that: A mating cover (507) is fixed on the connector (506). The mating cover (507) abuts against the mating head (502). Multiple grooves (508) are provided on the mating cover (507) at equal intervals.

5. A filter according to claim 1, characterized in that: The cable (7) passes through the protective sleeve (6), and the protective sleeve (6) is threadedly connected to the insulating sleeve (501).

6. A filter according to claim 1, characterized in that: The outer shell (1) is provided with mounting seats (4) on both sides, and the mounting seats (4) are provided with waist-shaped grooves.

7. A filter according to claim 1, characterized in that: A cover plate (8) is installed on the outer shell (1), and a heat dissipation fin (3) is fixed at the bottom of the circuit board (2).

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