Filter capable of absorbing static electricity

Abstract

The utility model discloses a filter capable of absorbing static electricity, which comprises a shell and a cover plate, each of the shell and the cover plate comprises an inner layer and an outer layer, the outer layer wraps the outer side of the inner layer, the inner layer is made of an insulating material, the outer layer is made of a metal material with good conductivity, and the outer layer is grounded. According to the filter, the shell and the cover plate of the filter are arranged to be of the structure with the inner layer and the outer layer, the inner layer is made of the insulating material, the outer layer is made of the metal material with good conductivity, and when static electricity is generated and acts on the filter, the conductive metal on the outer layer can conduct the static electricity to the ground; static electricity is prevented from contacting original parts in the filter to cause damage to the filter.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter technical field, concretely is a filter that can absorb static electricity. BACKGROUND

[0002] The filter can effectively filter out the frequency point of the specific frequency in the power line or the frequency outside the frequency point, obtain a power signal of a specific frequency, or eliminate a power signal after a specific frequency.

[0003] Static electricity protection has always been the weak point of the filter, and in the use process, static electricity is easy to release to the inside through the protective layer of the filter, thereby causing damage to the filter. UTILITY MODEL CONTENT

[0004] The utility model provides a filter that can absorb static electricity to solve the problem proposed in the background art.

[0005] To achieve the above object, the utility model is realized by the following technical scheme:

[0006] A filter that can absorb static electricity, comprising a shell and a cover plate, the shell and the cover plate each comprise an inner layer and an outer layer, the outer layer is wrapped on the outer side of the inner layer, the inner layer is made of insulating material, the outer layer is made of metal material with good conductivity, and the outer layer is grounded.

[0007] Preferably, the sheet resistance of the outer layer is less than or equal to 300 Ω / □.

[0008] Preferably, the thickness of the outer layer is less than or equal to 2 mm.

[0009] Preferably, the cover plate is fastened on the shell to form a sealed cavity in the shell.

[0010] Preferably, a plurality of fixing seats are arranged in the cavity, and the fixing seats are fixedly connected to the upper side of the inner layer of the shell.

[0011] Preferably, a resonator is fixedly connected in the fixing seat.

[0012] Preferably, a plurality of tuning screws are arranged on the cover plate, the number of the tuning screws corresponds to the number of the resonators, and the tuning screws are connected with the resonators.

[0013] Preferably, a coupling member is arranged in the cavity, and the coupling member is used to couple the plurality of resonators in the cavity.

[0014] Preferably, the shell and the cover plate are connected through a positioning member, the positioning member comprises a groove arranged on the upper side surface of the shell and a protrusion arranged on the lower side of the cover plate, and the protrusion is embedded in the groove.

[0015] Preferably, the recess is provided with a fixing screw hole, and the cover plate is fixed in the fixing screw hole by a bolt penetrating the protruding thread.

[0016] Compared with the prior art, the utility model at least has the following beneficial effects:

[0017] The shell and the cover plate of the filter are provided with the inner and outer two-layer structure, the inner layer is made of insulating material, and the outer layer is made of metal material with good electric conductivity, so that when static electricity is generated and acts on the filter, the electrically conductive metal of the outer layer can conduct the static electricity to the ground, avoids the static electricity from contacting the internal components of the filter, and causes damage to the filter. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic view of the main structure of the utility model;

[0019] Figure 2 It is a schematic view of the internal structure of the shell of the utility model;

[0020] Figure 3 It is a schematic view of the sectional view of the main structure of the utility model.

[0021] In the drawing: 1, shell; 2, cover plate; 3, tuning screw; 4, positioning piece; 5, fixing screw hole; 6, resonator; 7, coupling piece; 8, cavity; 9, fixing seat. DETAILED DESCRIPTION

[0022] In the utility model, the description such as "first", "second" and the like is only for the purpose of description, and is not the meaning of special order or sequence, and is not used to limit the utility model, which is only for distinguishing the protective assembly or operation described by the same technical language, and cannot be understood as indicating or suggesting the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can be explicitly or implicitly included at least one feature. In addition, the technical solutions and technical features of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0023] Embodiment 1

[0024] Please refer to Figure 1 A filter capable of absorbing static electricity, comprising a shell 1 and a cover plate 2, the shell 1 and the cover plate 2 both comprise an inner layer and an outer layer, the outer layer is wrapped on the outer side of the inner layer, the inner layer is made of insulating material, the outer layer is made of metal material with good electric conductivity, and the outer layer is grounded.

[0025] The outer layer has a square resistance of less than or equal to 300 ohms.

[0026] The outer layer has a thickness of less than or equal to 2 mm.

[0027] The working principle and beneficial effects of the above scheme are as follows:

[0028] In the present application, the shell 1 and the cover plate 2 of the filter are arranged in a structure of two layers, the inner layer is made of insulating material, and the outer layer is made of metal material with good conductivity. When static electricity is generated and acts on the filter, the conductive metal of the outer layer will conduct static electricity to the ground, avoiding static contact with the internal components of the filter and causing damage to the filter.

[0029] Embodiment 2

[0030] Please refer to Figures 1-3 On the basis of embodiment 1, the cover plate 2 is buckled on the shell 1 to form a closed cavity 8 in the shell 1.

[0031] A plurality of fixing seats 9 are arranged in the cavity 8, and the fixing seats 9 are fixedly connected to the upper side of the inner layer of the shell 1.

[0032] The fixing seats 9 are fixedly connected with resonators 6. The specific content of the combination filter of the resonator 6 can refer to the Chinese patent CN221176629U, a cavity resonator and a filter with the cavity resonator.

[0033] A plurality of tuning screws 3 are arranged on the cover plate 2, the number of the tuning screws 3 corresponds to the number of the resonators 6, and the tuning screws 3 are connected with the resonators 6.

[0034] A coupling member 7 is arranged in the cavity 8, and the coupling member 7 is used to couple the resonators 6 in the cavity 8. The specific content of the coupling resonator 6 through the coupling member 7 can refer to the Chinese patent CN222015655U, a filter.

[0035] The working principle and beneficial effects of the above scheme are as follows:

[0036] In the present application, the resonators 6 are fixed by the fixing seats 9, which increases the stability of the resonators 6, and thus is conducive to improving the filtering effect of the filter.

[0037] Embodiment 3

[0038] Please refer to Figures 1-2 On the basis of embodiment 1, the shell 1 and the cover plate 2 are connected by a positioning member 4, the positioning member 4 includes a groove arranged on the upper surface of the shell 1 and a protrusion arranged on the lower side of the cover plate 2, and the protrusion is embedded in the groove.

[0039] The groove is provided with a fixing screw hole 5, and the cover plate 2 and the housing 1 are fixed in the fixing screw hole 5 by bolts passing through the protruding thread.

[0040] The working principle and beneficial effects of the above scheme are as follows:

[0041] By setting grooves on the upper surface of housing 1 and protrusions on the lower surface of cover plate 2, the filter is made easy to assemble. At the same time, the interlocking grooves and protrusions prevent the housing 1 and cover plate 2 from moving relative to each other, reduce the misalignment caused by the movement of housing 1 and cover plate 2, and help enhance the sealing between housing 1 and cover plate 2, effectively preventing dust and debris from entering.

[0042] The two are secured with bolts, which is convenient and quick.

[0043] 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.

Claims

1. An electrostatic-absorbing filter, characterized in that, the filter comprises a shell (1) and a cover plate (2), the shell (1) and the cover plate (2) each comprise an inner layer and an outer layer, the outer layer is coated on the outside of the inner layer, the inner layer is made of insulating material, the outer layer is made of metal material with good electrical conductivity, and the outer layer is grounded.

2. The electrostatic-absorbing filter according to claim 1, characterized in that, the sheet resistance of the outer layer is ≤300Ω / □.

3. The electrostatic-absorbing filter according to claim 1, characterized in that, the thickness of the outer layer is ≤2mm.

4. The electrostatic-absorbing filter according to claim 1, characterized in that, the cover plate (2) is buckled on the shell (1) to form a closed cavity (8) in the shell (1).

5. The electrostatic-absorbing filter according to claim 4, characterized in that, a plurality of fixing seats (9) are arranged in the cavity (8), and the fixing seats (9) are fixedly connected to the upper side of the inner layer of the shell (1).

6. The electrostatic-absorbing filter according to claim 5, characterized in that, a resonator (6) is fixedly connected in the fixing seat (9).

7. The electrostatic-absorbing filter according to claim 6, characterized in that, a plurality of tuning screws (3) are arranged on the cover plate (2), the number of the tuning screws (3) corresponds to the number of the resonators (6), and the tuning screws (3) are connected with the resonators (6).

8. The electrostatic-absorbing filter according to claim 7, characterized in that, a coupling member (7) is arranged in the cavity (8), and the coupling member (7) is used for coupling the resonators (6) in the cavity (8).

9. The electrostatic-absorbing filter according to claim 1, characterized in that, the shell (1) and the cover plate (2) are connected through a positioning member (4), the positioning member (4) comprises a groove arranged on the upper side surface of the shell (1) and a protrusion arranged on the lower side of the cover plate (2), and the protrusion is embedded in the groove.

10. The electrostatic-absorbing filter according to claim 9, characterized in that, a fixed screw hole (5) is arranged in the groove, and the cover plate (2) and the shell (1) are fixedly connected through a bolt penetrating the protrusion and threaded into the fixed screw hole (5).

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