Filter assembly

Abstract

The utility model discloses a filter assembly, which comprises a base, a filter circuit board placed at the top of the base and an anti-interference shielding case located on the upper side of the filter circuit board, connecting sleeves are symmetrically and fixedly arranged on the left side and the right side of the anti-interference shielding case, and protective covers are fixedly arranged on the connecting sleeves. A signal power supply connecting wire is fixedly arranged in the protective cover, a top pressure inner sleeve is connected in the anti-interference shielding cover in a sliding fit mode, opening grooves are symmetrically formed in the left side and the right side of the top pressure inner sleeve, and a shock pad is fixedly arranged at the bottom end of the top pressure inner sleeve; the tail end, close to one side of the center of the anti-interference shielding cover, of the signal power supply connecting line penetrates through the open slot and is electrically connected with the filtering circuit board; the device can realize anti-interference and can enable the bottom end face of the filtering circuit board to be tightly attached to the top end face of the heat conducting rod, so that the heat dissipation and conduction efficiency of the closed space is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filter components, in particular to a filter component. Background Art

[0002] A filter is a filter circuit composed of capacitors, inductors and resistors. The filter can effectively filter out a specific frequency point in the power line or frequencies other than the frequency point to obtain a power signal of a specific frequency, or eliminate a power signal after a specific frequency. The filter is a frequency-selective device that allows specific frequency components in the signal to pass through while greatly attenuating other frequency components. The frequency-selective function of the filter can be used to filter out interference noise or perform spectrum analysis.

[0003] A filter assembly is a device that removes noise and high frequencies from an input signal of applied power to provide a resulting input signal to a load. Such a filter assembly may include an inductor and a printed circuit board (PCB) on which various circuit components are mounted.

[0004] Nowadays, the anti-interference device of the anti-interference filter is mostly fixedly connected to the inside of the anti-interference filter or the anti-interference film is adhered to the inner wall of the anti-interference filter. If there is a problem with the anti-interference device, it is inconvenient to repair. In addition, when the anti-interference filter is in use, if the heat generated inside cannot be discharged, it will affect the use of the anti-interference filter. Long-term internal overheating will also affect the service life of the anti-interference filter. Utility Model Content

[0005] The purpose of the utility model is to provide a filter component to overcome the above-mentioned defects in the prior art.

[0006] According to a filter assembly of the utility model, it includes a base, a filter circuit board placed on the top of the base and an anti-interference shielding cover located on the upper side of the filter circuit board, the left and right sides of the anti-interference shielding cover are symmetrically fixed with connecting sleeves, the connecting sleeve is fixed with a protective cover, a signal power connection line is fixed in the protective cover, a top pressure inner sleeve is slidably connected in the anti-interference shielding cover, the left and right sides of the top pressure inner sleeve are symmetrically provided with opening grooves, the bottom end of the top pressure inner sleeve is fixed with a shock-absorbing pad, the end of the signal power connection line close to the center of the anti-interference shielding cover passes through the opening groove and is electrically connected to the filter circuit board, the left and right side walls of the anti-interference shielding cover are also provided with left and right symmetrically arranged limit grooves, the limit sliding blocks are slidably connected in the limit grooves, the limit sliding blocks are fixedly connected to the top pressure inner sleeve, the top of the limit sliding blocks is connected with a top pressure spring, the left and right sides of the base are symmetrically provided with mounting lugs, the bottom of the mounting lug is provided with a first bolt for fixing the anti-interference shielding cover with the mounting lug, and the lower side of the first bolt is connected with an anti-loosening baffle by top pressure.

[0007] A further technical solution is that a heat dissipation groove with an opening facing downward is provided at the bottom of the base, a heat dissipation plate is fixedly provided in the heat dissipation groove, a plurality of groups of heat dissipation fins arranged equidistantly are fixedly provided at the bottom of the heat dissipation plate, a heat-conducting rod extending up and down is fixedly provided in the top wall of the heat dissipation groove, the top of the heat-conducting rod is in contact with the filter circuit board, and the bottom of the heat-conducting rod is fixedly connected to the heat dissipation plate.

[0008] According to a further technical solution, a cooling fan for enhancing heat dissipation efficiency can be externally connected to the lower side of the base.

[0009] According to a further technical solution, the anti-loosening baffle is fixedly connected to the base via a second bolt.

[0010] According to a further technical solution, the base and the mounting lug are arranged as an integral structure.

[0011] The beneficial effect of the utility model is that the device can keep the filter circuit board and the base in close fit at all times, thereby making the bottom end face of the filter circuit board and the top end face of the heat-conducting rod in close fit, thereby improving the heat dissipation conduction efficiency of the enclosed space in the anti-interference shielding cover, and at the same time, due to the abutment installation of the anti-loosening baffle and the first bolt, the first bolt is prevented from loosening, thereby improving the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of a filter component in the utility model;

[0013] Figure 2 This utility model Figure 1 A is an enlarged schematic diagram. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0016] Reference Figure 1-2 According to an embodiment of the utility model, a filter assembly comprises a base (1), a filter circuit board (4) placed on the top of the base (1), and an anti-interference shielding cover (6) located on the upper side of the filter circuit board (4), the left and right sides of the anti-interference shielding cover (6) are symmetrically fixed with connecting sleeves (5), the connecting sleeve (5) is fixedly provided with a protective cover (13), a signal power connection line (20) is fixedly provided in the protective cover (13), a top pressing inner sleeve (7) is slidably connected in the anti-interference shielding cover (6), and the top pressing inner sleeve (7) is abutted against the filter circuit board (4) to prevent the filter circuit board (4) from being damaged by vibration, the left and right sides of the top pressing inner sleeve (7) are symmetrically provided with opening grooves (11), the bottom end of the top pressing inner sleeve (7) is fixedly provided with a shock absorbing pad (12), and the signal power connection line (20) is close to the top pressing inner sleeve (7). The end of one side of the center of the anti-interference shielding cover (6) passes through the opening groove (11) and is electrically connected to the filter circuit board (4). The left and right side walls of the anti-interference shielding cover (6) are also provided with limit grooves (8) symmetrically arranged on the left and right sides. The limit grooves (8) are slidably connected with a limit slider (9). The limit slider (9) is fixedly connected to the top-pressing inner sleeve (7). The top of the limit slider (9) is top-pressed and connected with a top-pressing spring (10). The left and right sides of the base (1) are symmetrically provided with mounting lugs (16). The bottom of the mounting lug (16) is provided with a first bolt (17) for fixedly connecting the anti-interference shielding cover (6) to the mounting lug (16). The lower side of the first bolt (17) is top-pressed and connected with an anti-loosening baffle (18). The anti-loosening baffle (18) prevents the first bolt (17) from loosening.

[0017] Advantageously or exemplarily, a heat dissipation groove (2) with an opening facing downward is provided at the bottom of the base (1), a heat dissipation plate (3) is fixedly provided in the heat dissipation groove (2), a plurality of groups of heat dissipation fins (15) arranged at equal intervals are fixedly provided at the bottom of the heat dissipation plate (3), a heat conducting rod (14) extending upward and downward is fixedly provided in the top wall of the heat dissipation groove (2), the top of the heat conducting rod (14) is in contact with the filter circuit board (4), and the bottom of the heat conducting rod (14) is fixedly connected to the heat dissipation plate (3), thereby absorbing and outputting the heat on the filter circuit board (4), thereby accelerating the heat dissipation.

[0018] Advantageously or exemplarily, a cooling fan for enhancing heat dissipation efficiency can be externally connected to the lower side of the base (1), thereby further improving the heat dissipation efficiency.

[0019] Advantageously or exemplarily, the anti-loosening baffle (18) is fixedly connected to the base (1) via a second bolt (19), thereby enabling the anti-loosening baffle (18) to be stably installed.

[0020] Advantageously or exemplarily, the base (1) and the mounting lug (16) are arranged as an integral structure, thereby improving the stability of the structure.

[0021] When the utility model is used, the filter circuit board (4) is placed on the top of the base (1), the anti-interference shielding cover (6) is moved to the top of the base (1), and the anti-interference shielding cover (6) is moved downward so that the bottom of the anti-interference shielding cover (6) abuts against the mounting lug (16), and the base (1) and the anti-interference shielding cover (6) are fastened and connected by the first bolt (17). At this time, the shock-absorbing pad (12) on the bottom end of the top-pressing inner sleeve (7) abuts against the top end surface of the filter circuit board (4), and the limit slider (9) on the top-pressing inner sleeve (7) is subjected to the top pressure of the top-pressing spring (10), so that the filter circuit board (4) and the base (1) are closely fitted, and at the same time, the bottom end surface of the filter circuit board (4) and the top end surface of the heat-conducting rod (14) are closely fitted, so as to realize the heat dissipation conduction work, and prevent the filter circuit board (4) and the heat-conducting rod (14) from generating a gap due to vibration, thereby affecting the heat transfer and heat dissipation efficiency.

[0022] It is clear to those skilled in the art that various modifications to the above embodiments can be made without departing from the overall spirit and concept of the present invention. All of them fall within the protection scope of the present invention. The protection scheme of the present invention shall be subject to the claims attached to the present invention.

Claims

1. A filter assembly, comprising a base (1), a filter circuit board (4) placed on the top of the base (1), and an anti-interference shielding cover (6) located on the upper side of the filter circuit board (4), characterized in that: The anti-interference shielding cover (6) is symmetrically provided with a connecting sleeve (5) on the left and right sides, a protective cover (13) is fixed on the connecting sleeve (5), a signal power connection line (20) is fixed in the protective cover (13), a top pressing inner sleeve (7) is slidably connected in the anti-interference shielding cover (6), an opening groove (11) is symmetrically provided on the left and right sides of the top pressing inner sleeve (7), a shock absorbing pad (12) is fixed at the bottom end of the top pressing inner sleeve (7), the end of the signal power connection line (20) close to the center side of the anti-interference shielding cover (6) passes through the opening groove (11) and is electrically connected to the filter circuit board (4), the anti-interference The left and right side walls of the shielding cover (6) are also provided with limit grooves (8) symmetrically arranged on the left and right sides, and the limit slide block (9) is slidably connected in the limit groove (8), and the limit slide block (9) is fixedly connected to the top-pressing inner sleeve (7), and the top of the limit slide block (9) is top-pressingly connected to a top-pressing spring (10), and the left and right sides of the base (1) are symmetrically provided with mounting lugs (16), and the bottom of the mounting lug (16) is provided with a first bolt (17) for fixedly connecting the anti-interference shielding cover (6) and the mounting lug (16), and the lower side of the first bolt (17) is top-pressingly connected to an anti-loosening baffle (18).

2. A filter assembly according to claim 1, characterized in that: The bottom of the base (1) is provided with a heat dissipation groove (2) with an opening facing downward, a heat dissipation plate (3) is fixedly arranged in the heat dissipation groove (2), a plurality of groups of heat dissipation fins (15) arranged at equal intervals are fixedly arranged in the bottom of the heat dissipation plate (3), a heat conduction rod (14) extending upward and downward is fixedly arranged in the top wall of the heat dissipation groove (2), the top of the heat conduction rod (14) is in contact with the filter circuit board (4), and the bottom of the heat conduction rod (14) is fixedly connected to the heat dissipation plate (3).

3. A filter assembly according to claim 2, characterized in that: The lower side of the base (1) can be externally connected to a cooling fan for enhancing heat dissipation efficiency.

4. A filter assembly according to claim 1, characterized in that: The anti-loosening baffle (18) is fixedly connected to the base (1) via a second bolt (19).

5. A filter assembly according to claim 1, characterized in that: The base (1) and the mounting lug (16) are arranged as an integral structure.

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