Integrated filtering assembly

Abstract

The utility model discloses an integrated filtering assembly, which belongs to the technical field of power supplies, and comprises a filter module, a shell, a shielding partition plate and an on-off unit, the shielding partition plate divides the interior of the shell into a first accommodating cavity and a second accommodating cavity, the filter module is arranged in the first accommodating cavity, and the shielding partition plate is arranged in the second accommodating cavity. The on-off unit is arranged in the second accommodating cavity, and the on-off unit is electrically connected with the filter module; the filter module comprises a differential and common mode inductor unit, a safety capacitor unit and a piezoresistor unit which are arranged on a circuit board. The filter module and the on-off unit are arranged in the shell, and the on-off unit and the filter module are separated through the shielding partition plate, so that the filter assembly is compact in structure, interference of the outside to the filter can be effectively reduced, and mutual influence between the filter module and the on-off unit is prevented; meanwhile, the assembly can be used as a part of a power supply, assembly line production and assembly are facilitated, and the production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply, in particular to an integrated filter component. Background Art

[0002] The filter is an important component in the power supply, and its main function is to reduce or suppress interference. In its special application places, the filter itself will also be interfered by the outside world and affect its performance. For example, in the RF power supply, when the filter adopts the traditional installation layout, other functional components of the RF power supply (such as the power tube of the amplifier) ​​will cause interference, which is easy to affect the normal operation of the filter, thereby reducing the performance of the filter. In addition, the air switch electrically connected to the filter will also affect each other. During the assembly process, the filter, air switch and other devices need to be assembled separately, and the assembly process is relatively cumbersome. Utility Model Content

[0003] The purpose of the utility model is to overcome the problems of complicated filter assembly process and insufficient anti-interference ability in the prior art, and to provide an integrated filter assembly.

[0004] In order to achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0005] An integrated filter assembly comprises a filter module, a housing, and a shielding partition, wherein the shielding partition divides the housing into a first accommodating chamber and a second accommodating chamber, and further comprises a switch unit, wherein the filter module is arranged in the first accommodating chamber, the switch unit is arranged in the second accommodating chamber, and the switch unit is electrically connected to the filter module;

[0006] The filter module comprises: a differential common mode inductor unit, a safety capacitor unit, and a varistor unit which are arranged on a circuit board.

[0007] As a preferred solution of the utility model, the housing is composed of a plurality of sheet metal parts, and the sheet metal parts are detachably connected by screws.

[0008] As a preferred solution of the utility model, the shielding baffle is detachably connected to the shell by screws, the shielding baffle is made of metal, and the shielding plate can also shield the electromagnetic interference signal generated by the filter module.

[0009] As a preferred solution of the utility model, the on-off unit is an air switch or a circuit breaker.

[0010] As a preferred solution of the utility model, a through hole is provided on the shell, and the operating structure of the air switch is provided outside the shell through the through hole. A latch is also provided outside the operating structure to prevent misoperation.

[0011] As a preferred solution of the present invention, the filter module and the switching unit are respectively arranged on two side surfaces of the shell parallel to the shielding partition.

[0012] As a preferred solution of the utility model, it further comprises a mounting plate, the filter module is fixed on the side surface of the housing via the mounting plate, and the switching unit is detachably connected to the housing via screws.

[0013] As a preferred solution of the utility model, a wiring hole is provided on the shielding baffle, or a gap for wiring is left between one side of the shielding baffle and the shell, and the wiring between the filter module and the switching unit passes through the gap.

[0014] As a preferred solution of the present invention, the on-off unit and the filter module are electrically connected via an aviation plug terminal.

[0015] As a preferred solution of the utility model, the differential common mode inductor unit includes a first differential common mode inductor and a second differential common mode inductor, the safety capacitor unit includes a first differential mode capacitor group, a common mode capacitor group and a second differential mode capacitor group, and the resistor unit includes a discharge resistor unit and a varistor unit;

[0016] The varistor unit, the first differential mode capacitor group, the first differential common mode inductor, the second differential common mode inductor, and the discharge resistor unit are connected in sequence; one end of the common mode capacitor group is connected between the first differential common mode inductor and the second differential common mode inductor; the second differential mode capacitor group is connected between the second differential common mode inductor and the discharge resistor unit.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the filter module and the switch unit are arranged in the shell, and the switch unit and the filter module are separated by a shielding partition, so that the filter assembly structure is compact, which can effectively reduce external interference to the filter and prevent mutual influence between the filter module and the switch unit; at the same time, the assembly can be used as a component of the power supply, which is convenient for assembly line production and assembly, and can improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure inside the housing of an integrated filter assembly according to Embodiment 1 of the present utility model;

[0019] Figure 2 This is a structural block diagram of a filter module of an integrated filter assembly described in Example 1 of the utility model;

[0020] Figure 3 This is an electrical schematic diagram of a filter module of an integrated filter assembly as described in Example 1 of the utility model;

[0021] Figure 4 This is a structural schematic diagram of a filter module of an integrated filter assembly according to Embodiment 2 of the present utility model;

[0022] Figure 5 This is a schematic diagram of the overall structure of a filter module of an integrated filter assembly according to Embodiment 2 of the present utility model;

[0023] Markings in the figure: 1-filter module, 2-housing, 21-first accommodating cavity, 22-second accommodating cavity, 3-shielding partition, 4-on-off unit, 5-operating mechanism, 6-connector, 7-mounting plate, 8-aviation plug terminal, 9-through hole, 10-pin. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in combination with test examples and specific implementation methods. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention. Example

[0025] An integrated filter component, such as Figure 1 As shown, it includes a filter module 1, a shell 2, and a shielding baffle 3, wherein the shielding baffle 3 divides the shell 2 into a first accommodating chamber 21 and a second accommodating chamber 22, and further includes a switching unit 4, wherein the filter module 1 is arranged in the first accommodating chamber 21, and the switching unit 4 is arranged in the second accommodating chamber 22, and the switching unit 4 is electrically connected to the filter module 1;

[0026] The filter module 1 includes: a differential common mode inductor unit, a safety capacitor unit, and a varistor unit which are arranged on a circuit board.

[0027] The filter module 1 and the on-off unit 4 are arranged in the shell 2, and the on-off unit 4 and the filter module 1 are separated by the shielding partition 3, so that the filter component structure is compact, which can effectively reduce the external interference to the filter and prevent the mutual influence between the filter module 1 and the on-off unit 4; at the same time, the component can be used as a component of the power supply, which is convenient for assembly line production and assembly, and can improve production efficiency.

[0028] A connector 6 is further provided on the housing 2 at a position corresponding to the second accommodating cavity 22 .

[0029] like Figure 2 and Figure 3As shown, the differential common mode inductor unit includes a first differential common mode inductor and a second differential common mode inductor, the safety capacitor unit includes a first differential mode capacitor group, a common mode capacitor group and a second differential mode capacitor group, and the resistor unit includes a discharge resistor unit and a varistor unit;

[0030] The varistor unit, the first differential mode capacitor group, the first differential common mode inductor, the second differential common mode inductor, and the discharge resistor unit are connected in sequence; one end of the common mode capacitor group is connected between the first differential common mode inductor and the second differential common mode inductor, and the other end is grounded; the second differential mode capacitor group is connected between the second differential common mode inductor and the discharge resistor unit.

[0031] The filter module 1 can realize common-mode filtering and differential-mode filtering at the same time, and jointly suppress common-mode electromagnetic interference and differential-mode electromagnetic interference, so that the anti-interference effect of the filter component is better.

[0032] The housing 2 is composed of a plurality of sheet metal parts, which are detachably connected by screws, thereby saving costs and facilitating assembly and maintenance.

[0033] The shielding baffle 3 is detachably connected to the shell 2 via screws, and the shielding baffle 3 is made of metal. Example

[0034] An integrated filter component, the difference between this embodiment and embodiment 1 is that the on-off unit 4 is an air switch or a circuit breaker.

[0035] like Figure 4 As shown, a through hole 9 is provided on the shell 2, and the operating structure 5 of the air switch is provided outside the shell 2 through the through hole 9. A plug 10 is also provided on the outside of the operating structure 5 to prevent misoperation. The use of the air switch can not only realize short circuit protection and overcurrent protection, but also realize leakage protection to prevent electric shock accidents.

[0036] like Figure 5 As shown, the filter module 1 and the switching unit 4 are respectively arranged on two side surfaces of the housing 2 parallel to the shielding partition 3 .

[0037] It also includes a mounting plate 7, the filter module 1 is fixed on the side of the housing 2 via the mounting plate 7, and the switching unit 4 is detachably connected to the housing 2 via screws.

[0038] The shielding baffle 3 is provided with a wiring hole, or a gap for wiring is left between one side of the shielding baffle 3 and the shell 2, and the wiring between the filter module 1 and the switching unit 4 passes through the gap. This setting method can further shield the electromagnetic interference signal generated by the filter module.

[0039] The on-off unit 4 is electrically connected to the filter module 1 via an aviation plug terminal 8 .

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated filter assembly, comprising a filter module (1), a housing (2), and a shielding baffle (3), characterized in that: The shielding partition (3) divides the housing (2) into a first accommodating chamber (21) and a second accommodating chamber (22), and further comprises a switching unit (4), the filter module (1) being arranged in the first accommodating chamber (21), the switching unit (4) being arranged in the second accommodating chamber (22), and the switching unit (4) and the filter module (1) being electrically connected; The filter module (1) comprises: a differential common mode inductor unit, a safety capacitor unit, and a resistor unit, which are arranged on a circuit board.

2. An integrated filter assembly according to claim 1, characterized in that: The housing (2) is composed of a plurality of sheet metal parts, and the sheet metal parts are detachably connected by screws.

3. An integrated filter assembly according to claim 2, characterized in that: The shielding baffle (3) is detachably connected to the shell (2) via screws, and the shielding baffle (3) is made of metal.

4. The integrated filter assembly according to claim 1, characterized in that: The on-off unit (4) is an air switch or a circuit breaker.

5. The integrated filter assembly according to claim 4, characterized in that: The housing (2) is provided with a through hole (9), the operating structure (5) of the air switch is arranged outside the housing (2) through the through hole (9), and a latch (10) for preventing misoperation is also arranged outside the operating structure (5).

6. The integrated filter assembly according to claim 3, characterized in that: The filter module (1) and the switching unit (4) are respectively arranged on two side surfaces of the housing (2) parallel to the shielding partition (3).

7. The integrated filter assembly according to claim 6, characterized in that: It also comprises a mounting plate (7), the filter module (1) being fixed on the side surface of the housing (2) via the mounting plate (7), and the switching unit (4) being detachably connected to the housing (2) via screws.

8. The integrated filter assembly according to claim 1, characterized in that: The shielding baffle (3) is provided with a wiring hole, or a gap for wiring is left between a side of the shielding baffle (3) and the housing (2), and the wiring between the filter module (1) and the switching unit (4) passes through the gap.

9. The integrated filter assembly according to claim 8, characterized in that: The on-off unit (4) and the filter module (1) are electrically connected via an aviation plug terminal (8).

10. The integrated filter assembly according to claim 1, characterized in that: The differential common mode inductor unit includes a first differential common mode inductor and a second differential common mode inductor, the safety capacitor unit includes a first differential mode capacitor group, a common mode capacitor group and a second differential mode capacitor group, and the resistor unit includes a discharge resistor unit and a varistor unit; The varistor unit, the first differential mode capacitor group, the first differential common mode inductor, the second differential common mode inductor, and the discharge resistor unit are connected in sequence; one end of the common mode capacitor group is connected between the first differential common mode inductor and the second differential common mode inductor; the second differential mode capacitor group is connected between the second differential common mode inductor and the discharge resistor unit.

Images