KR102271387B1 - Resilient Gasket - Google Patents

Abstract

Disclosed is an elastic gasket that enables reliable electrical connection between objects by an elastic force caused by tension of an elastic conductive member. The gasket comprises: an elastic core; and an elastic conductive member fixed by continuously winding the outer surface of the core at regular intervals along the longitudinal direction. On the opposite surface of the core facing an object, the elastic conductive member electrically contacts the object with elasticity due to the own tension of the elastic conductive member. A slot is formed by a force that the elastic conductive member winds around the core, and thus at least a portion of the elastic conductive member is fitted and fixed in the slot.

Description

Resilient Gasket {Resilient Gasket}

The present invention relates to an elastic gasket interposed between opposing electrically conductive objects, and more particularly, to an elastic gasket capable of reliable electrical connection between objects by elastic force caused by tension of an elastic conductive member.

In general, an elastic gasket interposed between opposing objects is used for the purpose of shielding electromagnetic waves by connecting the opposing objects to each other with electricity, or for mechanical sealing to prevent leakage of sound, gas, or water.

In general, the elastic gasket should be soft so that the pressing force is small, and the elastic restoring force should be good, and if electrical conductivity is required, the electrical resistance should be low. In addition to these basic properties, it is desirable to be economically supplied in continuous rolls, and flexibility is required to bend well at various angles.

According to the conventional patent No. 1018735 by the inventor of the present invention, an elastic rubber having a certain volume, an elastic rubber coating layer attached to surround the entire outer surface of the elastic rubber, and an outer surface of the elastic rubber coating layer are obliquely lined with a certain insulating interval An elastic electrical contact terminal comprising a flexible metal member which is continuously wound around to adhere to the elastic rubber coating layer, is soldered by the metal member, and has elasticity by the elastic rubber and the elastic rubber coating layer is proposed.

According to this patent, the metal member protruding to the outside provides reliable electrical contact with the opposing object and at the same time is electrically connected to the back surface so that the opposing object can be electrically connected to each other by soldering, and the metal member is not formed The part is easy to provide reliable elasticity, resilience and flexibility even against repeated compression provided from the outside.

However, in the above structure, a separate adhesive must be interposed for the metal member to adhere to the elastic rubber, and an operation for coating the metal member is required.

In addition, since the metal member is adhered to the elastic rubber, the elastic force and elastic restoring force of the electrical contact terminal are generated only by the elastic rubber, and thus the size thereof is limited, and as a result, the reliability of the electrical connection by the elasticity may be deteriorated.

Accordingly, an object of the present invention is to provide an elastic gasket capable of improving the reliability of electrical connection with an object that is elastically opposed by the tension of the conductive member itself.

Another object of the present invention is to provide an elastic gasket that does not require an adhesive for bonding an elastic conductive member and a core.

Another object of the present invention is to provide an elastic gasket that is not easily separated from a core without being easily deformed in a space or shape of an elastic conductive member by an external force even without a separate adhesive.

Another object of the present invention is to economically provide an elastic gasket capable of providing electrical shielding and mechanical sealing at the same time.

The above object is an elastic gasket that is interposed between opposing objects, and consists of an elastic core and an elastic conductive member that is fixed by winding an outer surface of the core continuously at regular intervals along the longitudinal direction, and facing the object. On the opposite surface of the core, the elastic conductive member is in electrical contact with the object by elasticity due to the tension of the elastic conductive member, and a slot is formed by the force of the elastic conductive member winding the core to form the elastic conductive member At least a portion of the member is achieved by an elastic gasket, characterized in that it is fitted and fixed in the slot.

Preferably, at least a portion of the elastic conductive member that is not fitted into the slot may protrude so as not to contact the surface of the core.

Preferably, the elastic conductive member is a high-strength metal wire, and the metal wire is a copper alloy wire such as a phosphor bronze wire or beryl copper wire having a circular cross section, a stainless wire, or an iron alloy wire of a piano wire. The outer surface of the elastic conductive member may be sequentially plated with tin, silver, or nickel/gold having good electrical conductivity and environmental resistance.

Preferably, the dimensions and turn diameter of the elastic conductive member, the pitch between the elastic conductive members, and the hardness and tension of the elastic conductive member may be appropriately designed in consideration of the spacing, width, and pressing force between the objects. have.

Preferably, the core has a rectangular cross section having four corners so that the elastic conductive member can be fixedly embedded in the four corners of the core.

Preferably, the core may have an elliptical cross-section so that the slot may be formed on a surface corresponding to a large diameter of the core.

Preferably, the core has a circular cross section, and protrusions extending in the longitudinal direction are formed on both sides of the core, so that the slot may be formed at a portion where the elastic conductive member that winds the core contacts the protrusions. .

Preferably, when the object has electrical conductivity and a plurality of electrical patterns, the elastic conductive member groups in electrical contact with each of the adjacent electrical patterns may be electrically separated from each other.

Preferably, when the object has electrical conductivity, the electrical resistance between the opposing objects may be 1 ohm or less due to the elastic conductive member.

Preferably, the elastic gasket may provide electromagnetic wave shielding and mechanical sealing at the same time, and the core and the elastic conductive member may contact the object.

According to the present invention, the high-strength elastic conductive member is electrically and reliably connected to the object because it is in elastic contact with the opposing object by the elastic force and elastic restoring force formed by the tension generated by the orbit around the core.

In addition, the elastic conductive member protruding so as not to contact the surface of the core directly contacts the electrically conductive object to facilitate electrical contact with the object and has a low electrical contact resistance.

In addition, at least a portion of the elastic conductive member is embedded in at least a part of the core and fixed to the core, so that the spacing or shape of the elastic conductive member is not easily deformed by an external force even without a separate adhesive and is not easily separated from the core.

In addition, at least a portion of the elastic conductive member and the core portion in which the slot is not formed elastically contact the object to provide electrical shielding and mechanical sealing at the same time.

1 is a perspective view showing a gasket according to an embodiment of the present invention.
2(a) and 2(b) are cross-sectional views cut in the width direction and the length direction, respectively, and 2(c) and 2(d) are examples showing a state in which the conductive member is wound.
3(a) and 3(b) respectively show modified examples of the core.
4 shows the use state of the gasket.
5 shows another use state of the gasket.

It should be noted that the technical terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention. In addition, the technical terms used in the present invention should be interpreted as meanings generally understood by those of ordinary skill in the art to which the present invention belongs, unless specifically defined in other meanings in the present invention, and excessively inclusive It should not be construed in the meaning of a human being or in an excessively reduced meaning.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a gasket according to an embodiment of the present invention, and FIGS. 2(a) and 2(b) are cross-sectional views cut in the width direction and the length direction, respectively.

The gasket 100 of the present invention is used to be interposed between opposing objects, and the objects may have electrical conductivity.

When the object has electrical conductivity, one gasket 100 may constitute an electrical interface consisting of a single path or an electrical interface having a plurality of conductive paths.

Hereinafter, a case in which the gasket 100 constitutes an electrical interface composed of a single path will be described as an example.

The gasket 100 includes an elastic core 110 and an elastic conductive member 130 that is fixed by continuously winding an outer surface of the core 110 diagonally along the longitudinal direction at regular intervals.

On the opposite surface of the core 110 facing the object, the elastic conductive member 130 electrically contacts the object with elasticity due to the tension of the elastic conductive member itself, and the elastic conductive member 130 winds the core 110 . The slot 112 is formed by force, so that at least a portion of the elastic conductive member 130 is fitted and fixed in the slot 112 .

In this embodiment, opposite surfaces of the core 110 are an upper surface and a lower surface, and slots 112 are formed on both sides, but the present invention is not limited thereto.

By interposing the gasket 100 between opposing objects, the electrical resistance between the objects may be 1 ohm or less by the elastic conductive member 130 .

The gasket 100 may optionally be fixedly attached to the object by interposing an electrically conductive double-sided adhesive tape on the lower surface thereof, or may be attached to the object by soldering or the like.

<Core 110>

The core 110 has elasticity, and may be a tube having a through hole formed therein in the longitudinal direction, a rod shape in which a through hole is not formed, as in this embodiment, or a foamed sponge.

The core 110 may be, for example, silicone rubber, urethane rubber, or synthetic rubber having elasticity, and has heat resistance corresponding to the soldering temperature when soldering is required.

The hardness of the core 110 is determined depending on the shape of the core 110 and the size and use of the elastic conductive member 130 , and it may be preferably about Shore A 40 to 80 without being too hard or too soft.

The core 110 is manufactured by an extrusion process and provided as a continuous reel in the longitudinal direction.

The core 110 may have any cross-sectional shape as long as the elastic conductive member 130 is spaced apart from the upper or lower surface of the core 110 .

For example, as in this embodiment, the core 110 may have a rectangular cross-section having four corners so that the elastic conductive member 130 is embedded in the four corners of the core 110 and fixed thereto.

Referring to the enlarged circle of FIG. 1 , the portion where the elastic conductive member 130 contacts the core 110 is pressed by the pressing force of the elastic conductive member 130 to form a slot 112 in which the core 110 is recessed. do. That is, the slot 112 is formed by at least a portion of the conductive member 130 digging into at least a portion of the core 110 when the high-strength conductive member 130 continuously winds the low-hardness core 110 .

As shown in Figure 2 (a), the elastic conductive member 130 is embedded in the slots 112 formed by the elastic conductive member 130 on both sides of the core 110, the opposite surface of the core 110, that is, the upper surface and On the lower surface, the elastic conductive member 130 is spaced apart from the core 110 to form a gap 120 .

Since the conductive member 130 is spaced apart from the upper and lower surfaces of the core 110 , the slot 112 is not formed, and the conductive member 130 from both sides of the conductive member 130 depends on the magnitude of the force to wind the core 110 . ) may be completely or partially embedded in the slot 112 .

The width of the slot 112 is determined by the diameter of the elastic conductive member 130 , and the depth of the slot 112 is determined by the force that the elastic conductive member 130 winds around the core 110 and the dimensions and hardness of the core 110 . and the like, and the size of the gap 120 may be determined by adjusting the turn diameter of the elastic conductive member 130 .

Here, the depth of the slot 112 and the size of the gap 120 may be related to each other, for example, even if the gap 120 disappears because the elastic conductive member 130 is pressed by an object on the upper and lower surfaces of the core 110 . It is possible to prevent the elastic conductive member 130 from falling out from the slot 112 on both sides of the core 110 .

In this embodiment, the elastic conductive member 130 on both sides of the core 110 is illustrated as being embedded in the slot 112 , but the middle portion may protrude from the slot 112 due to the radius of curvature.

Importantly, as shown in FIG. 2( a ), by fixing the elastic conductive member 130 through the slots 112 at the four corners of the core 110 , the elastic conductive member 130 is aligned with the upper surface of the core 110 . It is to have a certain elastic force and elastic restoring force by the tension of the elastic conductive member 130 itself in a state spaced apart from the lower surface.

In addition, by the protruding elastic conductive member 130, electrical contact with the opposing object is easy, the electrical contact resistance is small, and soldering is possible.

3(a) and 3(b) respectively show modified examples of the core.

Referring to FIG. 3A , the core 210 has an elliptical cross section, and the elastic conductive member 230 winds the core 210 in a circular orbit.

As a result, the elastic conductive member 230 is embedded and fixed in the slot 212 formed by the elastic conductive member 230 on the surface corresponding to the large diameter of the core 210 , and the surface from the opposite surface of the core 210 is The elastic conductive member 230 spaced apart from it has elastic force and elastic restoring force by its own tension.

Referring to FIG. 3( b ), the core 310 has a circular cross section, and protrusions 314 extending in the longitudinal direction are formed on both sides of the core 310 , and the elastic conductive member 330 for winding the core 310 is formed. A slot 312 is formed in a portion in contact with the protrusion 314 .

Accordingly, the elastic conductive member 330 winds the core 310 while being fitted and fixed in the slot 312 , and as a result, the elastic conductive member 330 spaced apart from the surface on the opposite surface of the core 310 is in its own tension. It has elasticity and elastic restoring force.

The protrusions 314 are preferably formed to form a pair in the left-right or up-and-down direction rather than the opposite surfaces to be mechanically symmetrical.

Although not shown, the cross-sectional shape of the core 310 may be a triangular shape or a ladder shape depending on the shape of the object.

<Elastic conductive member 130>

The elastic conductive member 130 is a high-strength metal wire, preferably a copper alloy wire such as a phosphor bronze wire or a beryl copper wire having a circular cross-section, a stainless wire, or an iron alloy wire of a piano wire. .

In this embodiment, although a wire having a circular cross-section of the elastic conductive member 130 is shown, the present invention is not limited thereto, and a polarized wire may be applied. Here, the polarized wire may be a circular wire rolled into a substantially rectangular shape.

When the cross-sectional shape of the elastic conductive member 130 is circular, the outer diameter may be 0.03 mm to 0.1 mm.

Tin, silver, or nickel/gold may be sequentially plated on the outer surface of the elastic conductive member 130 for environmental resistance or for easy soldering and low electrical resistance.

The dimensions and turn diameter of the elastic conductive member 130, the pitch between the elastic conductive members 130, and the hardness and tension of the elastic conductive member 130 are appropriately designed in consideration of the spacing, width, and pressing force between objects. can be

The elastic conductive member 130 is fixed at both sides by winding the outer surface of the core 110 , and is wound in a spiral having a constant inclination in the longitudinal direction based on the width direction of the core 110 .

Referring to FIG. 2(c), the conductive member 130 is completely embedded in the slot 112 of the core 110 from both sides and partially protrudes from the opposite surface, that is, the upper surface and the lower surface.

2 (d), the conductive member 130 is embedded in the slot 112 on the opposite surface of the core 110, but does not protrude, but maintains an exposed state. Even in this state, when pressed by an object, the core 110 ) is pressed, the conductive member 130 may be in electrical contact with the object.

4 shows the use state of the gasket.

On the upper and lower surfaces of the core 110 , the elastic conductive member 130 is elastically completely pressed by the electrically conductive objects 10 and 20 to contact the lower surface of the core 110 , thereby eliminating the gap 120 .

At this time, the elastic conductive member 130 strongly adheres to the electrical pattern of the objects 10 and 20, specifically, the objects 10 and 20, with an elastic restoring force due to its own tension, in a state pressed by the objects 10 and 20. to be electrically and reliably connected.

Here, the opposing objects 10 and 20 may be electrically conductive metal cases, metal-plated plastic cases, printed circuit boards, or the like.

5 shows another use state of the gasket.

The conductive members 130 wound around the core 110 form one group by three, and each group is electrically separated by the cutout 132 . Here, the cutout 132 may be formed by cutting the conductive member 130 around the core 110 using a laser or the like.

The number of conductive member groups corresponds to the number of electrical patterns 12 and 22 formed on the objects 10 and 20 .

According to this structure, a plurality of elastic conductive members 130 are formed in groups and electrically connected to each other in the adjacent electrical patterns 12 and 22 of each object 10 and 20 to form a plurality of conductive paths.

The elastic conductive member 130 group is not easily separated from the core 110 due to its shape, but may be prevented from being separated more by using a separate adhesive.

As a result, the gasket 100 of this structure can be applied as an anisotropic connector to the objects 10 and 20 .

Although the above description has been focused on the embodiments of the present invention, it goes without saying that various changes may be made at the level of those skilled in the art. Accordingly, the scope of the present invention cannot be construed as being limited to the above-described embodiments, and should be construed by the claims described below.

10, 20: electrically conductive object
100: gasket
110: core
120: gap
130: elastic conductive member

Claims (15)

An elastic gasket used between opposing objects,
Consists of an elastic core, and an elastic conductive member fixed by winding the outer surface of the core at regular intervals along the longitudinal direction in succession,
On the opposite surface of the core facing the object, the elastic conductive member electrically contacts the object with elasticity due to the tension of the elastic conductive member,
A slot is formed by the force that the elastic conductive member winds around the core so that at least a portion of the elastic conductive member is fitted and fixed in the slot
At least a portion of the elastic conductive member that is not fitted into the slot protrudes so as not to contact the surface of the core. delete delete In claim 1,
The elastic conductive member is an elastic gasket, characterized in that the high-strength metal wire. In claim 4,
The metal wire is an elastic gasket, characterized in that it is composed of a copper alloy wire, such as a phosphor bronze wire or beryl copper wire of a circular cross section, a stainless wire (Stainless wire), or an iron alloy wire of a piano wire (Piano wire). In claim 4,
An elastic gasket, characterized in that the outer surface of the elastic conductive member is sequentially plated with tin, silver, or nickel/gold having good electrical conductivity and environmental resistance. In claim 1,
An elastic gasket, characterized in that the dimensions and turn diameter of the elastic conductive member, the pitch between the elastic conductive members, and the hardness and tension of the elastic conductive member are designed in consideration of the spacing, width, and pressing force between the objects. . In claim 1,
The elastic gasket, characterized in that the core is an elastic rubber produced by extrusion. In claim 1,
and the core has a rectangular cross section having four corners, and the elastic conductive member is embedded in and fixed to the four corners of the core. In claim 1,
The core has an elliptical cross section and the slot is formed on a surface corresponding to a large diameter of the core. In claim 1,
The core has a circular cross section, and protrusions extending in the longitudinal direction are formed on both sides of the core so that the slots are formed at a portion where the elastic conductive member that winds the core contacts the protrusions. gasket. In claim 1,
The elastic gasket, characterized in that the object is electrically conductive, and when a plurality of electrical patterns are provided, the elastic conductive member groups in electrical contact with each of the adjacent electrical patterns are electrically separated from each other. In claim 1,
The elastic gasket, characterized in that the object is electrically conductive, and the electrical resistance between the opposing objects is 1 ohm or less by the elastic conductive member. In claim 1,
The elastic gasket is an elastic gasket, characterized in that it provides electromagnetic wave shielding and mechanical sealing at the same time. In claim 1,
The elastic gasket, characterized in that the core and the elastic conductive member contact the object.

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