KR20200000179U - Electromagnetic interference (EMI) shielding gaskets - Google Patents

Abstract

According to various aspects, preferred embodiments of an electromagnetic interference (EMI) shielding gasket are disclosed. In a preferred embodiment, the EMI shielding gasket includes a base, at least one finger extending outwardly from the base in a first direction (eg, spring finger, etc.), and at least one clip extending outwardly from the base in a second direction. It includes. The finger includes at least one slit extending along the finger and thus spaced apart ends separated by the slit extending therebetween.

Description

Electromagnetic interference (EMI) shielding gaskets

The present invention mainly relates to electromagnetic interference (EMI) shielding gaskets.

This section provides background information related to the present invention and this is not necessarily prior art.

A common problem in the operation of electronic devices is the generation of electromagnetic radiation in the electronic circuits of the equipment. Such radiation can cause electromagnetic interference (RF) or radio frequency interference (RFI) that can interfere with the operation of certain nearby electronics. Without proper isolation, EMI / RFI disturbances can cause significant signal degradation or complete loss, making electronic equipment inefficient or impractical.

A common solution to improve EMI / RFI interference is through the use of shields that can absorb, reflect and / or divert electromagnetic interference energy. Such shields are typically used to localize electromagnetic / high frequency interference to their source and isolate other equipment close to the center of the electromagnetic / high frequency source. For example, substrate mount shields are widely used to protect sensitive electronic equipment from electromagnetic interference between and within systems and to reduce unwanted electromagnetic radiation from noisy integrated circuits (ICs).

Within the specification, the term "EMI" should generally be considered to include or refer to electromagnetic emissions and radio frequency emissions, and the term "electromagnetic field" generally refers to or includes electromagnetic waves and high frequencies from external and internal sources. Should be considered. Thus, the term shielding, as used herein, roughly absorbs, reflects, blocks, and / or mitigates (or limits) electromagnetic waves and / or radio frequencies in a dedicated or some combination thereof, eg, to comply with government regulations. And / or no longer interfere with the internal functions of the electronic component system.

This section provides a general summary of the subject innovation and does not disclose the full scope or features thereof.

The problem to be solved by the present invention is to provide an electromagnetic interference (EMI) shielding gasket that can improve the EMI shielding effectiveness.

According to various aspects, preferred embodiments of an electromagnetic interference (EMI) shielding gasket are disclosed. In one preferred embodiment, the EMI shielding gasket generally includes a base, at least one finger (eg, a spring finger, etc.) extending outwardly in the first direction from the base, and outwardly extending in the second direction from the base. At least one clip. The finger comprises at least one slit extending along the finger such that the finger comprises spaced apart ends separated along the slit extending therebetween.

More areas of applicability will become apparent from the description provided herein. The above description and specific examples of the present solution are for illustrative purposes only and do not limit the scope of the present invention.

Provided are electromagnetic interference (EMI) shielding gaskets that can improve EMI shielding effectiveness.

1 and 2 are top and bottom perspective views, respectively, of an electromagnetic interference (EMI) shielding gasket according to a preferred embodiment.
3, 4, 5, and 6 are top, bottom, side, and sectional side views of the EMI shielding gasket shown in Figs. 1 and 2, respectively.
7 is an exploded perspective view of the EMI shielding gasket of FIG. 1 positioned between upper and lower (or first and second) members or components in accordance with a preferred embodiment.
8 shows a preferred embodiment of the method for assembling the EMI shielding gasket of FIG. 1 between the upper and lower members shown in FIG.
Figure 9 is a perspective view of the EMI shielding gasket of Figure 8 without the top and bottom members and having a configuration in which the gasket is folded, pressed and in contact.
In the drawings, the corresponding part number indicates the corresponding part.

DESCRIPTION OF THE EMBODIMENTS Preferred embodiments are more fully described with reference to the accompanying drawings.

Preferred embodiments of electromagnetic interference shielding gaskets (EMI, for example, spring finger clip-on gaskets shown in Figures 1-6) are disclosed. An EMI shielding gasket may be operated by a gasket to provide EMI shielding to one or more components within a space defined between upper and lower (or first and second) members (eg, top and bottom plates or substrates, etc.). And to be assembled between the upper and lower members.

In a preferred embodiment, the EMI shielding gasket includes a plurality of spaced apart spring fingers (eg, resilient and / or flexible fingers) along the top of the gasket and a plurality of spaced clips along the bottom of the gasket. Include. Thus, the EMI shielding gasket may also be referred to as a spring gasket or a spring finger clip-on gasket.

The spring fingers may be configured to be in electrical contact with corresponding electrically-conductive portions of the upper member. The clips may be configured to contact corresponding portions of the lower member to mount the gasket to the lower member. The gasket can be compressed between the upper member and the lower member, which can help to create a good pressure-enhanced electrical contact between the gasket and the upper and lower members. The spring fingers can be configured such that mechanical contact between the spring fingers and the upper member is made with a reduced non-contact gap size to improve (eg, increase, maximize, etc.) EMI shielding effectiveness. In a preferred embodiment, the spring finger comprises a slit along the upper portion of the spring finger. Insertion of the slit into the spring finger reduces the non-contact gap size between the spring finger and the upper member. Contact between the spring finger and the upper member is made along the spring finger edge and the slit edge so that the non-contact gap size can be significantly reduced. As a result, the reduced non-contact gap size can significantly improve EMI shielding effectiveness.

Advantageously, the clips can mount and electrically contact the gasket to the lower member without the use of an electrically-conductive adhesive tape. Use of electrically-conductive adhesive tape to mount gaskets tends to be a relatively complex and costly process. Moreover, over time due to exposure to sufficiently high temperatures, high humidity, and / or corrosive materials, the electrical properties of the electrically-conductive adhesive tape may be degraded. If the electrical properties of the tape deteriorate, electrical and physical contact between the gasket and the mounting surface may also deteriorate.

As disclosed herein, the clips can effectively replace an electrically-conductive adhesive tape application to provide good electrical contact between the gasket and the lower member while eliminating the cost of such tape. For example, the clips can be configured to create a connection or assembly force between the gasket and the lower member to securely retain the gasket on the lower member and to effectively replace the electrically-conductive adhesive tape. The clips can be configured to ensure that the contact between the gasket and the lower member is mostly uniform and free of voids, thereby ensuring good or normal electrical contact between the gasket and the lower member and providing good EMI shielding effectiveness.

If there is no slit in the spring finger, contact between the spring finger and the upper member is created only along the edge of the spring finger. In some cases, the non-contact gap size may be approximately equal to the width of the spring finger. In contrast, the insertion of the slit or slot into the spring finger, as disclosed herein, is the non-contact gap size of the spring finger and the upper member as much as the contact between the spring finger and the upper member is along the edge of the spring finger and the edge of the slit. Can be reduced. This in turn enables a significant reduction in the contactless gap size. In addition, the reduced non-contact gap size can significantly improve EMI shielding effectiveness compared to gaskets comprising spring fingers without such slots or slits.

1 through 6 show an EMI shielding spring finger clip-on gasket 100 (broadly a gasket or shield member) in accordance with a preferred embodiment for implementing one or more aspects of the present invention. As shown in Figs. 7 and 8, the gasket 100 comprises upper and lower member (or first and second) members 104, 108, for example upper and lower plates or substrates (Figs. 7 and 8). ), Etc.) to be assembled (eg, compressed).

Once assembled or installed between the upper and lower members 104, 108, the gasket 100 may have an interior space or passageway 112 (FIG. 11) defined by the gasket 100 and the upper and lower members 104, 108. And to provide EMI shielding and / or grounding for one or more components in 8) (eg, one or more electrical components on a printed circuit board (PCB)). For example, a printed circuit board may be located in or in proximity to the interior space or passageway 112 such that one or more components on the printed circuit board are within or close to an inner circumference defined by the gasket 100. Is placed.

With continued reference to FIGS. 1-6, the gasket 100 has a generally circular ring or closed loop shape with an opening 116 generally in the center. The opening 116 is configured to allow components such as electromagnetic components, printed circuit board components, and / or other components that are shielded and / or grounded by the gasket 100 to pass there through (eg, For example, in size, shape, location, etc.). In other preferred embodiments, the gasket may have other configurations, including open shapes such as linear or partially elliptical concentric arcs and partial squares.

The gasket 100 includes a plurality of spring fingers 120 (eg, resilient and / or flexible finger elements, etc.) spaced along an upper portion of the gasket 100. The spring fingers 120 are configured to electrically contact corresponding electrically-conductive portions of the upper member 104. The gasket 100 further includes a plurality of spaced clips or tabs 124 (eg, attachment members, clasp members, etc.) along the lower portion of the gasket 100. The clips 124 may be configured to contact corresponding portions of the lower member 108 to mount the gasket 100 to the lower member 108. The gasket 100 may also be referred to as a spring gasket or a spring finger clip-on gasket.

The gasket 100 includes slots or slits 128 (a wide opening) defined and / or disposed between the spaced spring fingers 120. In preferred embodiments, the gasket 100 includes twelve slots 128 spaced equally around the gasket 100 around it. The gasket 100 also includes twelve fingers 120 equally spaced around the outer diameter of the base or bottom 140 of the gasket 100 (a wide outer circumference). In other preferred embodiments, the gasket may have another configuration with more or fewer than twelve fingers and / or one or more fingers in other positions.

Each spring finger 120 includes a slit or slot 132 (a wide opening) along the upper portion of the spring finger 120. The slit 132 extends from an open end to a closed end along an upper portion of the spring finger 12. The slit 132 extends between two spaced ends 136 of the spring finger 120. In other words, the spring finger 120 has two ends 136 separated or spaced by the slit 132.

Insertion of the slit 132 into the spring finger 120 reduces the non-contact gap size between the spring finger 120 and the upper member 104. When the gasket 100 is compressed between the upper and lower members 104 and 108 (FIG. 8) (FIG. 9), the spring fingers 120 and the upper members 104 become spring fingers ( The outer edge of 120 and the inner edge of the slits 132 are contacted, which causes the non-contact gap size to be significantly reduced. As a result, the reduced non-contact gap size can significantly improve EMI shielding effectiveness.

Each spring finger 120 extends outward (eg, up, etc.) from the base or bottom 140 of the gasket 100. As shown in FIG. 6, each spring finger 120 includes a linear portion 144 connected to the base 140 of the gasket 100 by a first connection portion 148. In this preferred embodiment, the first connection portion 148 is curved, angled, and / or acute (eg, about 30 degrees, etc.) between the base 140 and the linear portion 144. define.

The linear portion 144 extends upwardly to the second connection portion 152. Thus, the linear portion 144 extends between the first and second connecting portions 148 and 152.

The second connection portion 152 is connected to the spaced end or contact portion 136 of the spring finger 120. In this preferred embodiment, the second connector 152 is curved, angled, and / or obtuse (eg, about 120 degrees) between the linear portion 144 of the finger and the contact or end 136. And so on). In the uncompressed configuration shown in FIG. 6, the contacts or ends 136 of the finger extend or tilt (eg, downward, etc.) towards the base 140.

Each clip or tab 124 extends outward (eg, bottom, etc.) from the base 140 of the gasket 100. As shown in FIG. 6, each clip or tab 124 includes a linear portion 156 connected to the base 140 of the gasket 100 by a third connecting portion 160. In the present preferred embodiment, the third connector 160 is curved, angled, and / or acutely angled (eg, about 60 degrees, etc.) between the base 140 and the linear portion 156. define.

The linear portion 156 extends downward to the fourth connection portion 164. Thus, the linear portion 156 extends between the third and fourth connection portions 160 and 164.

The fourth connector 164 is connected to the contact or end 168 of the clip or tab 124. In the present preferred embodiment, the fourth connection portion 164 is curved, angled, and / or obtuse (eg, between the linear portion 156 of the clip or tab 124 and the contact portion or end 168). For example, about 135 degrees and so on).

As shown in FIG. 4, the present preferred embodiment of the gasket 100 comprises four equally spaced circumferences along the circumference of the inner diameter (broadly inner circumference) of the base 140 of the gasket 100. Clips 124. In other preferred embodiments, the gasket may have another configuration with more or less than four clips and / or one or more clips in other positions.

The clips 124 are configured to create a connection or assembly force between the gasket 100 and the lower member 108. The clips 124 are configured to be positioned opposite the inner sidewall 172 of the lower member 108 when the gasket 100 is positioned above the lower member 108.

As indicated by arrow 176 of FIG. 8, the gasket 100 may be pushed against the lower member 108 such that the clips or tabs 124 may have an inner sidewall 172 of the lower member. To contact. The inner sidewall 172 defines an opening (eg, a circular hole, etc.) through the lower member 108. As the gasket 100 moves down, the fourth connections 164 of the clips or tabs 124 push the clips or tabs 124 of the gasket outward from the inner sidewall 172. It can operate as a camming surface. Sliding contact of the fourth connections 164 along the inner sidewall 172 of the lower member 108 may bend, deform or move the clips or tabs 124 of the gasket in their original or initial positions. Can be rotated, rotated, or reciprocated. The clips or tabs 124 of the gasket may generally be substantially resilient, which returns the clips or tabs 124 of the gasket to their original or initial position, which in turn results in the clips or tabs 124 and the bottom of the gasket. Create a traction or fastening force between the members 108.

In various embodiments, the gasket 100 may be formed as a single component, integrally or as one by dipping, folding, and / or bending. In this example, the gasket 100 may be integrally formed, but is not required in all embodiments.

A wide range of materials, preferably elastically flexible and electrically-conductive materials, can be used as the gaskets disclosed herein (eg, gasket 100, etc.). In a preferred embodiment, the gasket 100 has a sufficient elasticity index, so that the fingers 120 and the clips 124 of the gasket 100 are unloaded as they are formed of an elastically flexible material. It can be replaced by the force from to the loading position and returned to the unloading position by removing this force without exceeding the yield point of the material. As a further example, the gasket 100 may be formed of a beryllium copper alloy finished (eg, tin plated, etc.) for compatibility with generating current. Other suitable materials, among others, phosphor bronze, copper-clad steel, brass, monel, silver silver, beryllium copper alloy, magnesium alloys, aluminum and aluminum alloys, steel, stainless steel, other copper based alloys may also be used.

According to various aspects, preferred embodiments of an EMI shielding gasket are disclosed. In one preferred embodiment, the EMI gasket is generally a base, at least one finger (eg, spring finger, etc.) extending outwardly from the base in a first direction and at least one extending in a second direction from the base. Contains the clip. The finger includes at least one slit extending along the finger and thus spaced apart ends separated by the slit extending therebetween.

The base may include an inner circumference and an outer circumference. The at least one finger may comprise a plurality of spring fingers along an outer circumference of the base. The at least one clip may include a plurality of clips spaced along an inner circumference of the base.

The base may be circular and includes an inner diameter and an outer diameter. The at least one finger may include a plurality of spring fingers spaced apart around the outer diameter of the base. The at least one clip may include a plurality of clips spaced apart along the inner diameter of the base.

The base may include an inner circumference and an outer circumference. The at least one finger may comprise a plurality of spring fingers that are evenly spaced around the outer circumference of the base and extend therefrom. The at least one clip may include a plurality of clips uniformly spaced and downwardly extending along an inner circumference of the base.

The gasket may generally have a circular ring shape with a central opening.

The gasket may be configured to be compressed between upper and lower members such that electrical contact is formed between the upper member and the gasket along the outer edge of the finger and the edge of the slit.

The gasket is an internal space defined by the EMI gasket and the upper and lower members when the gasket is compressed between the upper and lower members such that the finger and the clip are in electrical contact with the corresponding electrically-conductive portions of each of the upper and lower members. It may be configured to provide EMI shielding of one or more components in the interior.

The gasket may be configured to be compressed between the upper and lower members. The fingers may extend upwardly from the base of the gasket and be configured to be elastically compressed towards the base such that the ends of the fingers are in electrical contact with corresponding electrical conducting portions of the upper member. The clip may extend downwardly from the base of the gasket and is configured to attract and contact the inner sidewall of the lower member.

The finger may be configured to be in electrical contact with a corresponding electrically conducting portion of the upper member in the first direction. The clip may be configured to electrically contact and engage an inner sidewall of the lower member, generally in a second direction perpendicular to the first direction.

The at least one finger comprises a plurality of spring fingers. The gasket may include a plurality of slots defining the plurality of spring fingers. Each slot may extend between a pair of corresponding spring fingers.

The gasket may comprise a resiliently flexible electrically-conductive material.

The finger may comprise a linear portion, a first connection portion between the base and the linear portion, and a second connection portion between the ends spaced from the linear portion. The first connection portion may define a curved, angled, and / or acute angle between the base and the linear portion of the finger. The linear part may extend upward from the first connection part to the second connection part. The second connection may define a curved, angled, and / or obtuse angle between the linear portions of the finger and the spaced apart ends.

The clip may comprise a linear portion, a third connection between the base and the linear portion of the clip, and a fourth connection between the linear portion and the end of the clip. The third connection portion may define a bent, angled and / or acute angle between the base and the linear portion of the clip. The linear part may extend outwardly from the third connection part to the fourth connection part. The fourth connection may define a curved, angled, and / or obtuse angle between the linear portion and the end of the clip. The fourth connection portion of the clip may be configured to operate as a camming surface that urges the clip away from the inner side wall when the fourth connection is in sliding contact along the inner sidewall. The clip can be configured to have a resiliency that urges the clip to return to its original position, thereby creating a connection force between the clip and the inner sidewall.

The gasket may be configured to be compressed between the upper and lower members. The base may be circular and may include an inner diameter and an outer diameter. The at least one finger may include a plurality of spring fingers spaced evenly around the outer diameter of the base. The at least one clip may include a plurality of clips evenly spaced along the inner diameter of the base. The spring fingers may extend upward from the base of the gasket. The spring fingers can be configured to be elastically compressed toward the base such that the ends of the spring fingers are in electrical contact with corresponding electrical conducting portions of the upper member. The clips may extend downwardly from the base of the gasket. The clips may be configured to attract and contact the inner sidewall of the lower member. Each spring finger may comprise a linear portion, a first connection between the base and the linear portion, and a second connection between the ends spaced from the linear portion. The first connection portion may define a bent, angled and / or acute angle between the base and the linear portion of the spring finger. The linear portion may extend upward from the first connection portion of the spring finger to the second connection portion. The second connection may define a curved, angled, and / or obtuse angle between the linear portions of the spring finger and the spaced apart ends. Each clip may include a linear portion, a third connection between the base and the linear portion of the clip, and a fourth connection between the linear portion and the end of the clip. The third connection portion may define a bent, angled and / or acute angle between the base and the linear portion of the clip. The linear portion may extend downward from the third connection portion of the clip to the fourth connection portion. The fourth connection may define a curved, angled, and / or obtuse angle between the linear portion and the end of the clip. The fourth connection portion of the clip may be configured to operate as a camming surface that urges the clip away from the inner side wall when the fourth connection is in sliding contact along the inner sidewall. The clip can be configured to have a resiliency that urges the clip to return to its original position, thereby creating a connection force between the clip and the inner sidewall.

Preferred embodiments may provide one or more (but not all or all) of the following advantages or features. For example, the clips can mount and make electrical contact with the gasket to the lower member without the use of an electrically-conductive adhesive tape. Using electrically-conductive adhesive tape to mount gaskets tends to be a relatively complex and costly process. Over time due to exposure to sufficiently high temperatures, high humidity, and / or corrosive materials, the electrical properties of the electrically-conductive adhesive tape may be degraded. If the electrical properties of the tape deteriorate, electrical and physical contact between the gasket and the mounting surface may also deteriorate. Thus, using the clips in place of an electrically-conductive adhesive tape for mounting the gasket can eliminate potential issues associated with the use of the electrically-conductive adhesive tape.

If the clips are used to mount the gasket to the bottom member, the clips can also form a good electrical contact between the gasket and the bottom member. This will eventually help to improve or provide good EMI shielding effectiveness.

In addition, the spring fingers of the gasket can be configured such that good electrical contact is formed between the spring finger and the upper member with a reduced non-contact gap size. As a result, the reduced contactless gap size can help to improve the EMI shielding effectiveness of the gasket.

In preferred embodiments, the gasket has a loop or closed loop configuration (eg, round, rectangular, elliptical, other loops or closed loop shapes, or a combination thereof, etc.). However, the gasket may also have other configurations, including open shapes such as linear or partially elliptical concentric arcs and partial squares. In addition, other aspects may vary in other preferred embodiments including material thickness, loop contour, dimensions, about 12 spring fingers, about 4 clips, about other clips and / or spring fingers. Bending angle and so on.

Preferred embodiments are provided so that this disclosure will fully convey the scope to those skilled in the art. Many specific details are set forth in order to provide an understanding of embodiments of the present disclosure with examples of specific configurations, apparatuses, and methods. It is apparent to those skilled in the art that the specific details need not be employed and that the exemplary embodiments are embodied in many different forms and should not limit the scope of the disclosure. In some example embodiments, well-known procedures, known device structures, and well-known techniques are not described in detail. In addition, the advantages and improvements achieved with one or more preferred embodiments of the present disclosure have been presented for purposes of illustration only and do not limit the scope of the present disclosure, and the preferred embodiments disclosed herein may provide the above-mentioned advantages and improvements entirely. And may be included within the scope of the present disclosure.

The specific dimensions, specific materials, and / or specific shapes disclosed herein are illustrative only and do not limit the scope of the present disclosure. Certain values disclosed herein and particular ranges of values for a given variable do not exclude other values and ranges of numbers useful in one or more examples disclosed herein. In addition, any two specific values of a particular variable disclosed herein may be applied to a given variable (e.g., the beginning of the first and second values of a given variable does not affect any number between the first and second values). It is envisioned that endpoints of numerical values in the appropriate range may be defined. For example, if the variable X is exemplified here to have a numerical value A and a numerical value Z, then the variable X is envisioned to have a range of approximately A to Z. Similarly, the disclosure of two or more numerical ranges of variables (whether the ranges are fitted, overlapped or distinguished) is envisioned to include all possible combinations of ranges of values that can be claimed using the endpoints of the disclosed ranges. For example, variable X here has values in the range of 1-10, 2-9, or 3-8. For example, variable X is 1-9, 1-8, 1-3, 1-2. , 2-10, 2-8. It is envisioned to have other ranges of values including 2-3, 3-10, and 3-9.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms “comprises”, “comprising”, and “having” are inclusive and thus embody the presence of the features, integers, steps, actions, elements, and / or configurations mentioned but one or more other features. Do not exclude the presence of integers, integers, steps, actions, elements, configurations, and / or groups thereof. The method steps, processes, and operations described herein are not to be interpreted as necessarily required to be performed in the specific order discussed and illustrated, unless specifically identified in the order of performance. It is understood that additional or alternative steps may be employed.

When an element or layer is referred to as being "on", "engaged", "connected", or "coupled" to another element or layer, it is directly on, engaged with, or connected to, the other element or layer, There may be elements or layers joined or interposed therebetween. In contrast, if an element is said to be "directly on", "directly engaged", "directly connected", or "directly coupled" to another element or layer, there are no intervening elements or layers present. Other words used to describe the relationship between elements should be interpreted in the same way (eg, "between" versus "directly between", "close to", versus "close to close", etc.). As used herein, the term "and / or" includes any and all combinations of one or more associated listed items.

The term “about” refers to that, when applied to a numerical value, a calculation or measurement permits some minor inaccuracy of the numerical value (close to the precision of the numerical value; approximately or considerably close to the numerical value; slightly closer to the value). For some reason, the inaccuracy by "about" is not understood differently from its general meaning in the art, and "about" as used herein refers to the minimal changes that occur from common methods of measuring and using such variables. . For example, the terms "general", "about", and "substantially" can be used herein to mean within manufacturing tolerances.

Although the terms first, second, third, etc. herein may be used to describe various elements, configurations, regions, layers, and / or zones, such elements, configurations, regions, layers, , And / or zones are not limited to these terms. These terms are only used to distinguish one element, configuration, region, layer, or region from another region, layer, or region. Terms such as "first", "second", and other numerical terms, when used herein, do not imply an order or turn unless explicitly indicated by the context. Thus, a first element, composition, region, layer, or region may be referred to as a second element, composition, region, layer, or region without departing from the teachings of the exemplary embodiments.

Here, spatially related terms such as "inner", "outer", "down", "bottom", "up", "upper", and the like, may be used to describe other elements of one element or feature as shown in the drawings. It may be used for convenience of description to describe the relationship to element (s), feature (s). The spatially related terms are intended to include other directions in addition to the directions depicted in the drawings of the device or operation in use. For example, elements described as being "below" or "below" other elements or major parts will be adapted to be "above" said other element or major parts when the device of the figure is inverted. As such, the exemplary term "below" can encompass both directionality up and down. The device may be otherwise oriented (rotated 90 degrees or at other directions) and thus the spatially related descriptors are interpreted herein.

The foregoing description of the embodiments has been provided for the purposes of illustration and description. It is not intended to be exhaustive or to limit disclosure. Individual elements of a particular embodiment, intended or stated uses, or features are generally not limited to that particular embodiment but may be used in a replaceable and selected embodiment, where not specifically shown or described, where applicable. . This may also vary in many ways. Such changes are not to be regarded as a departure from the disclosure, and all changes are intended to be included within the scope of the disclosure.

Claims (20)

An electromagnetic interference (EMI) shielding gasket, comprising: a base, at least one finger extending outwardly from the base in a first direction, at least one clip extending outwardly from the base in a second direction,
The finger includes at least one slit extending along the finger and including spaced ends separated by slits extending therebetween.
EMI shielding gaskets. The method of claim 1,
The base includes an inner circumference and an outer circumference,
The at least one finger comprising a plurality of spring fingers along an outer circumference of the base,
The at least one clip includes a plurality of clips spaced along an inner circumference of the base.
EMI shielding gaskets. The method of claim 1,
The base is circular and includes an inner diameter and an outer diameter,
The at least one finger comprises a plurality of spring fingers spaced apart around the outer diameter of the base,
The at least one clip includes a plurality of clips spaced apart along the inner diameter of the base.
EMI shielding gaskets. The method of claim 1,
The base includes an inner circumference and an outer circumference,
The at least one finger comprising a plurality of spring fingers spaced evenly around and extending upwardly from the outer circumference of the base,
The at least one clip includes a plurality of clips evenly spaced along and extending downward from the inner circumference of the base.
EMI shielding gaskets. The method of claim 1,
The gasket has a circular ring shape with a central opening
EMI shielding gaskets. The method of claim 1,
The gasket is configured to be compressed between the upper and lower members so that electrical contact is formed between the upper member and the gasket along the outer edge of the finger and the edge of the slit.
EMI shielding gaskets. The method of claim 1,
The gasket is compressed between the upper and lower members so that when the finger and clip are in electrical contact with the corresponding electrically-conductive portions of each of the upper and lower members, one in the interior space defined by the EMI shielding gasket and the upper and lower members. Configured to provide EMI shielding of the above components
EMI shielding gaskets. The method of claim 1,
The gasket is configured to be compressed between the upper and lower members,
The fingers extend upwardly from the base of the gasket and are elastically compressed towards the base such that the ends of the finger are in electrical contact with a corresponding electrical conducting portion of the upper member,
The clip extends downwardly from the base of the gasket and is configured to draw in contact with the inner sidewall of the lower member.
EMI shielding gaskets. The method of claim 8,
The finger is configured to be in electrical contact with a corresponding electrical conducting portion of the upper member in one direction,
The clip is configured to electrically contact and engage the inner sidewall of the lower member in another direction perpendicular to the direction, wherein the clip is configured to electrically contact the corresponding electrically conductive portion of the upper member.
EMI shielding gaskets. The method of claim 1,
The at least one finger comprises a plurality of spring fingers,
The gasket includes a plurality of slots defining the plurality of spring fingers, wherein each slot extends between a pair of corresponding spring fingers.
EMI shielding gaskets. The method of claim 1,
The gasket includes a resiliently flexible electrically-conductive material
EMI shielding gaskets. In the claims of any one of the preceding claims,
The finger is
Linear portion;
A first connection portion between the base and the linear portion; And
A second connection between said linear portion and said spaced ends;
EMI shielding gaskets. The method of claim 12,
The first connection defines a bent, angled and / or acute angle between the base and the linear portion,
The linear portion extends upwardly from the first connection portion to the second connection portion,
The second connection defines a bent, angled and / or obtuse angle between the linear portion and the spaced ends.
EMI shielding gaskets. The claim according to claim 1, wherein
The clip is
Linear portion;
A third connection between the base and the linear portion of the clip; And
A fourth connection between the linear portion and the end of the clip
EMI shielding gaskets. The method of claim 14,
The third connecting portion defines a bent, angled and / or acute angle between the base and the linear portion,
The linear portion extends downward from the third connection portion to the fourth connection portion,
The fourth connection defines a bent, angled and / or obtuse angle between the linear portion and the end of the clip.
EMI shielding gaskets. The method of claim 15,
The fourth connecting portion of the clip is configured to operate as a camming surface for urging the clip to move away from the inner sidewall when the fourth connecting portion is in sliding contact along the inner sidewall,
The clip is configured to have a resiliency that urges the clip to return to its original position, thereby creating a connection force between the clip and the inner sidewall.
EMI shielding gaskets. The method of claim 1,
The gasket is configured to be compressed between the upper and lower members,
The base is circular and includes an inner diameter and an outer diameter,
The at least one finger comprises a plurality of spring fingers spaced evenly along the outer diameter of the base,
The at least one clip comprises a plurality of clips evenly spaced along the inner diameter of the base,
The spring fingers are configured to extend upwardly from the base of the gasket and to resiliently compress toward the base such that the ends of the spring fingers are in electrical contact with corresponding electrical conducting portions of the upper member,
The clips extend downwardly from the base of the gasket and are configured to attract and contact the inner sidewall of the lower member.
EMI shielding gaskets. The method of claim 17,
Each spring finger comprises a linear portion, a first connection between the base and the linear portion, and a second connection between the linear portion and the spaced ends,
The first connection defines a bent, angled and / or acute angle between the base and the linear portion,
The linear portion extends upwardly from the first connection portion to the second connection portion,
The second connection defines a bent, angled and / or obtuse angle between the linear portion and the spaced ends.
EMI shielding gaskets. The method of claim 17 or 18,
Each clip includes a linear portion, a third connection between the base and the linear portion, and a fourth connection between the linear portion and the end of the clip,
The third connecting portion defines a bent, angled and / or acute angle between the base and the linear portion,
The linear portion extends downward from the third connection portion to the fourth connection portion,
The fourth connection defines a bent, angled and / or obtuse angle between the linear portion and the end of the clip.
EMI shielding gaskets. The method of claim 19,
The fourth connecting portion of the clip is configured to operate as a camming surface for urging the clip to move away from the inner sidewall when the fourth connecting portion is in sliding contact along the inner sidewall,
The clip is configured to have a resiliency that urges the clip to return to its original position, thereby creating a connection force between the clip and the inner sidewall.
EMI shielding gaskets.

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