Electromagnetic shielding conductive adhesive tape structure

Abstract

The utility model discloses an electromagnetic shielding conductive adhesive tape structure, which comprises a conductive adhesive tape, an upper cover and a frame body, and is characterized in that the conductive adhesive tape consists of an elastic opening adhesive tape and crimping conductive cloth coated on the half side of the elastic opening adhesive tape; the elastic opening rubber strip is composed of a silicon rubber groove strip and a bottom opening clamping groove formed in the bottom of the silicon rubber groove strip, partition strips are arranged on the groove wall of the bottom opening clamping groove in a spaced mode, the side frame edge of the frame body is inserted into the bottom opening clamping groove, the upper cover is arranged on the conductive rubber strip in a pressed mode, and the lower cover is arranged on the conductive rubber strip in a pressed mode. And a frame body inner conductive region is arranged on the inner side of the frame body in the bottom opening clamping groove. The beneficial effects of the utility model lie in that the frame body and the upper cover are effectively conducted through the combination of the elastic opening rubber strip and the crimping conductive cloth, the design of the bottom opening clamping groove enables the elastic opening rubber strip to be in a semi-closed state, the crimping conductive cloth is easier to wrap the half side of the elastic opening rubber strip, and the silicone rubber strip is adopted, so that the sealing performance is good, the possibility of breakage is low, and the durability is high.

Description

Technical Field

[0001] This utility model relates to the field of power electronics, and in particular to an electromagnetic shielding conductive adhesive strip structure. Background Technology

[0002] Electromagnetic shielding strips are a shielding method that utilizes the properties of electromagnetic waves. The principle is to apply a strip around a specific area in space, forming a closed loop. When electromagnetic waves encounter the shielding strip, they are blocked, thus cutting off their propagation path, reducing the field strength caused by certain sources, and eliminating electromagnetic interference. Among the many methods for solving electromagnetic interference problems, electromagnetic shielding strips are the most basic and effective. With technological advancements, the requirements for shielding materials have evolved beyond just meeting electromagnetic sealing performance; they also need to address environmental sealing issues in harsh environments such as high temperature and high humidity. Currently, most existing conductive strips are made from materials such as foamed silicone and EPDM, which have poor sealing performance, are too expensive, and exhibit poor electromagnetic shielding performance when the sealing component deforms significantly. Utility Model Content

[0003] The purpose of this invention is to provide an electromagnetic shielding conductive adhesive strip structure in order to solve the above-mentioned problems.

[0004] This utility model achieves the above objectives through the following technical solutions:

[0005] An electromagnetic shielding conductive adhesive strip structure includes a conductive adhesive strip, a top cover, and a frame. The conductive adhesive strip is composed of an elastic open adhesive strip and a press-fit conductive cloth covering one half of the elastic open adhesive strip. The elastic open adhesive strip is composed of a silicone rubber groove and a bottom-opening clamping groove disposed at the bottom of the silicone rubber groove. A spacer is provided on the groove wall of the bottom-opening clamping groove. The side frame edge of the frame is inserted into the bottom-opening clamping groove. The top cover is pressed onto the conductive adhesive strip. A frame-inner conductive area is provided on the inner side of the frame inside the bottom-opening clamping groove. A cover-bottom conductive area is provided at the contact position between the top cover and the conductive adhesive strip.

[0006] Furthermore, the bottom opening groove below the spacer is provided with a groove wall protrusion, and the top of the silicone rubber groove is provided with a top pressing protrusion.

[0007] Furthermore, the press-fit conductive cloth is adhered to the elastic open adhesive strip.

[0008] Furthermore, both the conductive area at the bottom of the cover and the conductive area inside the frame are shielded metal areas.

[0009] Furthermore, the groove wall has multiple protrusions.

[0010] Furthermore, each of the groove wall protrusions is arranged vertically or obliquely on the groove wall.

[0011] Furthermore, each of the groove wall protrusions is of a regular shape, wherein the axis makes the same angle with the groove wall.

[0012] Furthermore, the spacing between each pair of the plurality of groove wall protrusions is equal.

[0013] Furthermore, the groove wall protrusions are hemispherical, cylindrical, or cubic in shape.

[0014] Furthermore, a closed cavity is formed above the spacer.

[0015] The beneficial effects of this utility model are as follows: by combining the elastic open adhesive strip and the press-fit conductive cloth, and in conjunction with the conductive area inside the cover bottom of the shielded cover, the conductivity of the frame and the top cover is effectively made to be at the same potential.

[0016] The bottom-opening groove design allows the elastic opening strip to be in a semi-closed state, making it easier to cover half of the conductive cloth. The use of silicone rubber strips ensures good sealing, resistance to breakage, and durability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the electromagnetic shielding conductive adhesive strip structure described in this utility model;

[0018] Figure 2 This is a partially enlarged schematic diagram of the electromagnetic shielding conductive adhesive strip structure described in this utility model.

[0019] The annotations in the attached figures are explained as follows:

[0020] 1. Elastic open rubber strip; 2. Press-fit conductive cloth; 3. Top cover; 4. Frame; 5. Conductive area at the bottom of the cover; 6. Conductive area inside the frame; 7. Silicone rubber groove; 8. Bottom open clamping groove; 9. Spacer; 10. Groove wall protrusion; 11. Top pressing protrusion; 12. Closed groove cavity. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] like Figures 1-2 As shown, an electromagnetic shielding conductive adhesive strip structure includes a conductive adhesive strip, a top cover 3, and a frame 4.

[0023] The conductive strip consists of an elastic open strip 1 and a press-fit conductive cloth 2 covering one half of the elastic open strip 1. The press-fit conductive cloth 2 can achieve equipotential between the top cover 3 and the frame 4.

[0024] The elastic open strip 1 is composed of a silicone rubber groove 7 and a bottom open clamping groove 8 set at the bottom of the silicone rubber groove 7. A partition 9 is provided on the groove wall of the bottom open clamping groove 8, and a closed cavity 12 is formed above the partition 9. The closed cavity 12 is used for deformation when the upper cover 3 and the frame 4 are closed and pressed. The side frame of the frame 4 is inserted into the bottom open clamping groove 8, and the upper cover 3 is pressed onto the conductive strip.

[0025] The inner side of the frame 4 inside the bottom opening groove 8 is provided with a conductive area 6 inside the frame, and the contact position between the top cover 3 and the conductive strip is provided with a bottom conductive area 5, thereby achieving equipotential between the top cover 3 and the frame 4.

[0026] Understandably, the top cover 3 and the frame 4 can be the top cover and frame of a power electronic device (such as an inverter). Understandably, the frame 4 contains power electronic components. In use, the top cover 3 presses the conductive adhesive strip onto the frame 4 to seal the power electronic device and simultaneously achieve equipotential between the top cover 3 and the frame 4.

[0027] like Figures 1-2 As shown, this utility model also discloses the following more optimized specific structures:

[0028] The bottom opening of the groove 8 below the partition strip 9 is provided with a groove wall protrusion 10, which is integrally set with the silicone rubber groove strip 7. The top of the silicone rubber groove strip 7 is provided with a top pressure protrusion 11 to increase the sealing of the upper cover 3 and the frame 4.

[0029] In one embodiment, there are multiple groove wall protrusions 10, each groove wall protrusion 10 being vertically disposed on the groove wall; or, each groove wall protrusion 10 being inclinedly disposed on the groove wall, i.e., the central axis of the multiple groove wall protrusions 10 forms an acute or obtuse angle with the groove wall; in one embodiment, there are multiple groove wall protrusions 10, each groove wall protrusion 10 being of a regular shape, wherein the angle between the axis and the groove wall is the same. In one embodiment, there are multiple groove wall protrusions 10, and the spacing between each pair of the multiple groove wall protrusions 10 is equal.

[0030] In one embodiment, the groove wall protrusion 10 is hemispherical or other regular shape, such as columnar, cubic, etc.

[0031] The conductive fabric 2 is pressed and adhered to the elastic open strip 1. The adhesion area mainly includes the entire top pressing protrusion 11, one side of the silicone rubber groove 7, and part of the groove wall of the bottom opening clamping groove 8.

[0032] The bottom conductive area 5 and the inner conductive area 6 of the frame are both metal-masking areas. That is, when the top cover 3 and the frame 4 are sprayed, the bottom conductive area 5 and the inner conductive area 6 of the frame are covered, so that the metal is exposed for conduction.

[0033] like Figures 1-2The electromagnetic shielding conductive adhesive strip structure shown combines the elastic open adhesive strip 1 and the press-fit conductive cloth 2, along with the conductive area 6 inside the frame of the bottom conductive area 5 of the shielded cover, to effectively achieve the conductivity between the frame 4 and the top cover 3. Furthermore, the design of the bottom opening groove 8 makes the elastic open adhesive strip 1 in a semi-closed state, making it easier for the press-fit conductive cloth 2 to cover half of it.

[0034] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. An electromagnetic shielding conductive adhesive strip structure, characterized in that: The device includes a conductive adhesive strip, a top cover, and a frame. The conductive adhesive strip consists of an elastic open adhesive strip and a press-fit conductive cloth covering one half of the elastic open adhesive strip. The elastic open adhesive strip consists of a silicone rubber groove and a bottom-opening clamping groove located at the bottom of the silicone rubber groove. A spacer is provided on the groove wall of the bottom-opening clamping groove. The side frame edge of the frame is inserted into the bottom-opening clamping groove. The top cover is pressed onto the conductive adhesive strip. A conductive area inside the frame is provided on the inner side of the frame inside the bottom-opening clamping groove. A bottom conductive area is provided at the contact position between the top cover and the conductive adhesive strip.

2. The electromagnetic shielding conductive adhesive strip structure according to claim 1, characterized in that: The bottom opening groove below the spacer is provided with a groove wall protrusion, and the top of the silicone rubber groove is provided with a top pressing protrusion.

3. The electromagnetic shielding conductive adhesive strip structure according to claim 1, characterized in that: The press-fit conductive cloth is adhered to the elastic open adhesive strip.

4. The electromagnetic shielding conductive adhesive strip structure according to claim 1, characterized in that: Both the bottom conductive area and the inner conductive area of ​​the frame are shielded metal areas.

5. The electromagnetic shielding conductive adhesive strip structure according to claim 3, characterized in that: The groove wall has multiple protrusions.

6. The electromagnetic shielding conductive adhesive strip structure according to claim 5, characterized in that: Each of the groove wall protrusions is arranged vertically or obliquely on the groove wall.

7. The electromagnetic shielding conductive adhesive strip structure according to claim 5 or 6, characterized in that: Each of the groove wall protrusions is of a regular shape, wherein the axis makes the same angle with the groove wall.

8. The electromagnetic shielding conductive adhesive strip structure according to claim 5 or 6, characterized in that: The spacing between each pair of the multiple groove wall protrusions is equal.

9. An electromagnetic shielding conductive adhesive strip structure according to claim 5 or 6, characterized in that: The groove wall protrusions are hemispherical, cylindrical, or cubic.

10. The electromagnetic shielding conductive adhesive strip structure according to claim 1, characterized in that: A closed cavity is formed above the spacer.

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