Patent Application
20220255242
The present invention relates to a connection component and a connection structure.
In window glass for automobiles that is provided with in-vehicle equipment such as a defroster or a defogger, a power feeding part comprising a conductive layer is formed on a glass plate, and the in-vehicle equipment functions when the power feeding part is supplied with electricity. For the in-vehicle equipment to function, a connection component that comprises a terminal for supplying electricity to the power feeding part and can be fixed to the power feeding part needs to be connected. Heretofore, lead solder has been broadly used to connect the connection component to the power feeding part. However, with spread of restriction on the use of lead, replacement with lead-free solder has been required. Lead-free solder, however, has a melting point 20 to 45° C. higher than lead solder, and has a problem of insufficient securing and being liable to peeling.
To replace the lead-free solder, use of a connection component comprising a conductive rubber or the like is being studied (see, for example, PTL1). In a case of using the connection component comprising the conductive rubber, for preventing a high temperature state when large current flows, it is necessary to lower electrical resistance by closely attaching the conductive rubber to the power feeding part. Therefore, the connection component may in some cases be bonded to an adherend component that comprises the power feeding part, with a securing member such as a thermosetting adhesive, in a state where the conductive rubber is compressed to come into contact with the power feeding part.
However, in a case where a connection component and a component to be connected are fixed with a securing member such as an adhesive in a state where a conductive member such as a conductive rubber is compressed as described above, a babble generated during the compression of the conductive member is likely to remain in the securing member. If the babble remains in the securing member, a securing area decreases, and attachability deteriorates.
Furthermore, if a temperature increases in a state where the babble remains in the securing member, the babble expands, making it difficult to maintain the compressed state, and a problem such as peeling off occurs.
To solve the problem, an object of the present invention is to provide a connection component and a connection structure, where the connection component can be firmly secured to an adherend member, in a state where a conductive member is compressed, to prevent a babble from remaining in a securing member.
As a result of earnest studies for solving the above problem, the present inventor has found that the above problem can be solved by providing at least one of a metal terminal and a securing member with an exhaust path configured to exhaust a babble, and the inventor has completed the present invention as follows.
The present invention is summarized in [1] to [18] as follows.
[1] A connection component comprising;
a metal terminal,
a conductive member provided on one surface of the metal terminal and deformable by compression,
a securing member bonded to one surface of the metal terminal, and
an exhaust path provided in at least one of the metal terminal and the securing member, the exhaust path being connected to or provided in at least one securing surface of; a first securing surface of the securing member that is bonded to the metal terminal; and a second securing surface that is an opposite surface to the first securing surface, the exhaust path exhausting a babble generated in at least one of the first securing surface and the second securing surface.
[2] The connection component according to the above [1], wherein the exhaust path comprises at least one of a first exhaust groove provided in a first main surface of the metal terminal that is bonded to the securing member, a second exhaust groove provided in the first securing surface, and a third exhaust groove provided in the second securing surface.
[3] The connection component according to the above [2], wherein the first exhaust groove, the second exhaust groove and the third exhaust groove reach an edge of the securing member.
[4] The connection component according to any one of the above [1] to [3], wherein the metal terminal comprises a first main surface bonded to the securing member, and a second main surface that is an opposite surface to the first main surface, and the exhaust path comprises a first exhaust hole extending through the first main surface and the second main surface.
[5] The connection component according to the above [4], wherein the first exhaust hole communicates with at least one of the first exhaust groove and the second exhaust groove.
[6] The connection component according to any one of the above [1] to [5], wherein the exhaust path comprises a second exhaust hole extending through the first securing surface and the second securing surface.
[7] The connection component according to the above [6], wherein the second exhaust hole communicates with at least one of the first exhaust groove, the second exhaust groove, the third exhaust groove and the first exhaust hole.
[8] The connection component according to any one of the above [1] to [7], further comprising:
a coupling member coupling the conductive member and the securing member.
[9] The connection component according to the above [8], wherein the second exhaust hole extends through the coupling member.
[10] The connection component according to any one of the above [1] to [9], wherein the exhaust path is a bottomed hole.
[11] The connection component according to any one of the above [1] to [10], wherein the exhaust path is disposed around the conductive member.
[12] The connection component according to any one of the above [1] to [11], wherein a shortest distance between the exhaust path and the conductive member is 15 mm or less.
[13] The connection component according to any one of the above [1] to [12], wherein the metal terminal comprises a first main surface bonded to the securing member, and a second main surface that is an opposite surface to the first main surface, and the second main surface comprises a projection.
[14] The connection component according to any one of the above [1] to [13], wherein the metal terminal comprises a first main surface bonded to the securing member, and the first main surface comprises a portion in contact with the conductive member, the portion being in a projecting shape.
[15] The connection component according to any one of the above [1] to [14], wherein the metal terminal comprises a tab terminal for cable connection.
[16] The connection component according to any one of the above [1] to [15], wherein the securing member comprises a pressure-sensitive adhesive layer or a pressure-sensitive adhesive double coated tape.
[17] The connection component according to any one of the above [1] to [16], wherein the conductive member comprises a rubber-like elastic body comprising a conductive filler.
[18] A connection structure comprising:
a component to be connected,
a metal terminal,
a conductive member disposed between the metal terminal and the component to be connected, the metal terminal and the component to be connected having electrical continuity via the conductive member,
a securing member disposed between the metal terminal and the component to be connected, the securing member securing the metal terminal and the component to be connected, in a state where the conductive member comes into contact with both of the metal terminal and the component to be connected and is compressed, and an exhaust path provided in at least one of the metal terminal and the securing member, the exhaust path being provided in or connected to at least one securing surface of a first securing surface of the securing member that is bonded to the metal terminal, and a second securing surface of the securing member that is bonded to the component to be connected, the exhaust path exhausting a babble generated in at least one of the first securing surface and the second securing surface.
The present invention provides a connection component and a connection structure, where the connection component can be firmly secured to an adherend member, in a state where a conductive member is compressed, to prevent a babble from remaining in a securing member.
Hereinafter, description will be made as to the present invention by use of embodiments.
As shown in
As shown in
In the connection component 1a, the conductive member 20, compressed in a thickness direction Z, comes into contact with the metal terminal 10 and the component 100 to be connected, and via the conductive member, the metal terminal 10 and the component 100 to be connected have electrical continuity. The conductive member 20 is in a compressed state in the thickness direction Z, and the conductive member 20 is accordingly sufficiently closely attached to the metal terminal 10 and the component 100 to be connected, so that electrical resistance in the conductive member 20 can be kept low. When the electrical resistance in the conductive member 20 is kept low, the conductive member 20 can be prevented from being in a high temperature state even in an environment where large current flows.
(Metal Terminal)
The metal terminal 10 has a first main surface 11 bonded to the securing member 30, and a second main surface 12 that is an opposite surface to the first main surface 11. The metal terminal 10 has the first main surface 11 coming into contact with the conductive member 20, and has electrical continuity with the conductive member 20. In addition, the metal terminal 10 is, for example, in a form of a flat plate, and the first and second main surfaces 11 and 12 are generally surfaces vertical to the thickness direction Z (parallel to the XY plane), but do not have to be parallel to the XY plane. Also, the thickness direction Z is a thickness direction of the conductive member 20, and current flows through the conductive member 20 along the thickness direction Z.
The metal terminal 10 may comprise a tab terminal 13 for cable connection. The tab terminal 13 can be formed, for example, in conformity with JIS C2809. In a case where the tab terminal 13 is, for example, a male terminal as shown in
A material of the metal terminal 10 is not particularly limited, and must only be metal having conductivity such as gold, silver, platinum, aluminum, copper, iron, nickel, palladium, chromium, or stainless steel, or an alloy of any of these metals. Also, a material of the tab terminal 13 is not particularly limited, and must only be similarly metal having conductivity such as gold, silver, platinum, aluminum, copper, iron, nickel, palladium, chromium, or stainless steel, or an alloy of any of these metals.
(Conductive Member)
The conductive member 20 may be one, and it is preferable to provide a plurality of conductive members as shown in
Furthermore, when a plurality of small conductive members 20 are provided, a load is smaller during compression of the whole plurality of conductive members 20 than when a single conductive member 20 with a large area is provided, and hence peeling off of the connection component 1a due to resilience of the conductive members 20 can be prevented.
A diameter of the conductive member 20 is not particularly limited, and is, for example, from 0.4 to 5.0 mm, preferably from 0.8 to 4.0 mm. Note that the diameter is a distance between positions of two points that are farthest from each other in a cross section of each element (e.g., the conductive member). Also, a thickness of the conductive member 20 is not particularly limited, and is, for example, from 0.5 to 4.0 mm, preferably from 0.6 to 3.0 mm.
The conductive member 20 is not particularly limited as long as the member can maintain a compressed state and has conductivity, and as an example of the member, a conductive rubber containing a conductive filler is used. The conductive member 20 may be entirely or partially conductive rubber. In an example of the conductive member that is partially conductive rubber, a conductive part made of conductive rubber is disposed in a central part, and an insulation part is disposed to surround an outer periphery of the conductive part.
In addition to conductive rubber, examples of the conductive member include a rubber-like elastic body in which fine metal wires are arranged, a rubber-like elastic body around which a metal foil or metal cloth is wound, a metal spring and the like.
The conductive member that is entirely conductive rubber is obtained by evenly mixing a conductive filler in a rubber-like elastic body.
As the conductive filler to be mixed in the conductive rubber, there may be used a carbon filler made of conductive carbon black, carbon fiber, graphite or the like; a metal filler or alloy filler made of silver, copper, nickel, gold, tin, zinc, platinum, palladium, iron, tungsten, molybdenum, solder or the like; or a conductive filler prepared by covering, with a conductive coating made of metal or the like, surfaces of particles of any of these materials. Alternatively, as the conductive filler, there may be used, for example, a conductive filler obtained by applying a conductive coating made of metal or the like to surfaces of polymer particles that are non-conductive particles made of polyethylene, polystyrene, phenol resin, epoxy resin, acryl resin or benzoguanamine resin, or inorganic particles made of glass beads, silica, graphite or ceramic. Examples of a shape of the conductive filler include particulate, fibrous, fragment and fine line shapes. One type of conductive filler may be used alone, or two or more types may be used together.
As the rubber-like elastic body, a thermosetting rubber, thermoplastic elastomer or the like can be exemplified. Examples of the thermosetting rubber include a silicone rubber, natural rubber, isoprene rubber, butadiene rubber, acrylonitrile butadiene rubber, styrene butadiene rubber, chloroprene rubber, nitrile rubber, butyl rubber, ethylene propylene rubber, acrylic rubber, fluororubber, and urethane rubber. Above all, silicone rubber excellent in forming processability, electrical insulation, weatherability and the like is preferable. Examples of the thermoplastic elastomer include a styrene-based thermoplastic elastomer, olefin-based thermoplastic elastomer, ester-based thermoplastic elastomer, urethane-based thermoplastic elastomer, polyamide-based thermoplastic elastomer, vinyl chloride thermoplastic elastomer, fluorine-based thermoplastic elastomer, and ion cross-linked thermoplastic elastomer. For the rubber-like elastic body, one type selected from the above examples may be used alone, or two or more types may be used together.
As shown in
It is preferable that the conductive filler mixed in the conductive part 21 is arranged continuously in the thickness direction Z. When the conductive filler is arranged continuously in the thickness direction Z, electrical resistance can be low even with a small compressive load. As a filler that is arranged continuously in the thickness direction Z of the connection component 1a, the same conductive filler as described above may be used.
Also, it is more preferable to arrange the conductive filler mixed in the conductive part 21, in a chain in the thickness direction Z by applying a magnetic field. When the conductive filler is arranged in the chain in the thickness direction Z, the electrical resistance can be lower even with the small compressive load. It is preferable that the conductive filler arranged in the chain in the thickness direction Z by applying the magnetic field is a magnetic conductive filler having magnetism and being arranged in a chain locally depending on the magnetic field or the like.
Examples of the magnetic conductive filler include nickel, cobalt, iron and ferrite, and an alloy of any of these metals. One type of magnetic conductive filler may be used alone, or two or more types may be used together.
As the rubber-like elastic body included in the conductive part 21, the aforementioned thermosetting rubber, thermoplastic elastomer or the like can be exemplified. The rubber-like elastic body included in the conductive part 21 facilitates the arrangement of the conductive filler in the thickness direction, for example, by applying the magnetic field, and from this viewpoint, it is preferable that the rubberlike elastic body is obtained by curing liquid rubber that is liquid at normal temperature (23° C.) and under normal pressure (1 atm) before cured, or that the rubber-like elastic body can be melted when heated. As the rubberlike elastic body included in the conductive part, one type selected from the above examples may be used alone, or two or more type may be used together.
As the rubber-like elastic body included in the insulation part 22, the aforementioned thermosetting rubber, thermoplastic elastomer and the like can be exemplified. Also, as the rubber-like elastic body included in the insulation part, similarly, one type may be used alone, or two or more types may be used together.
It is preferable that the rubber-like elastic bodies included in the conductive part 21 and the insulation part 22 are integrally formed. Therefore, it is preferable to use the same type of rubber-like elastic body to be included in the conductive part 21 and the insulation part 22, and it is more preferable to use silicone rubber as the rubber-like elastic body to be included in the conductive part 21 and the insulation part 22.
In the conductive member 20 comprising fine metal wire arranged in the rubber-like elastic body, a plurality of fine metal wires are arranged along the thickness direction Z in the rubber-like elastic body. Examples of metal included in the fine metal wire include metals having conductivity, such as gold, silver, platinum, aluminum, copper, iron, nickel, palladium, chromium, and stainless steel, and an alloy of any of these metals. The fine metal wire has a diameter that is preferably from 0.01 to 0.2 mm, more preferably from 0.02 to 0.1 mm, from a viewpoint of having a proper elasticity and a suitable conductivity.
The conductive member 20 comprising the rubberlike elastic body around which the metal foil or metal cloth is wound is obtained by winding the metal foil or metal cloth around the rubber-like elastic body in the thickness direction Z of the conductive member 20, the metal foil or metal cloth being made of metal having conductivity, such as gold, silver, platinum, aluminum, copper, iron, nickel, palladium, chromium, or stainless steel, or an alloy of any of these metals. It is preferable that the metal foil or metal cloth has a thickness of 0.001 to 0.1 mm, from a viewpoint of having the proper elasticity and suitable conductivity.
The conductive member 20 that is a metal spring is made of metal having conductivity, such as gold, silver, platinum, aluminum, copper, iron, nickel, palladium, chromium, or stainless steel, or an alloy of any of these metals. Examples of the metal spring include a coil spring and a leaf spring.
(Securing Member and Coupling Member)
As shown in
The securing member 30 of the present embodiment comprises a first securing surface 31, and a second securing surface 32 that is an opposite surface to the first securing surface 31, and each of the first securing surface 31 and the second securing surface 32 is an adherable surface. The first and second securing surfaces 31 and 32 are usually parallel to the XY-plane vertical to a Z-direction, but do not have to be parallel to the XY-plane. The first securing surface 31 is bonded to the metal terminal 10, and the second securing surface 32 is bonded to the component 100 to be connected.
It is preferable that the securing member 30 is formed to surround a periphery of each of the conductive members 20, from a viewpoint of stabilizing and fixing the conductive member 20 in the compressed state. In a case of surrounding the periphery of the conductive member 20, the securing member 30 may be bonded to an entire surface of the first main surface 11 of the metal terminal 10, or be bonded to a part of the first main surface. Needless to say, the securing member 30 does not have to surround the periphery of the conductive member 20, as long as the securing member is formed around the conductive member.
As shown in
The connection component 1a in the present embodiment may further comprise a coupling member 50 coupling the conductive member 20 and the securing member 30, as shown in
The coupling member 50 is a planar sheet-like member, and comprises, for example, a resin sheet. The resin sheet is not particularly limited, as long as having a certain strength that can couple the conductive member 20 and the securing member 30. Alternatively, as the resin sheet, a resin sheet having flexibility may be used. As the resin sheet, for example, a polyethylene terephthalate (PET) sheet, polyethylene naphthalate sheet, polycarbonate sheet, polyetheretherketone sheet, polyimide sheet, polyamide sheet, polyethylene sheet, polypropylene sheet, polyurethane sheet or the like is used. Among these, the PET sheet and the polyimide sheet are preferable from a viewpoint of durability, heat resistance or the like, and the polyimide sheet is preferable from a viewpoint of improving positional accuracy of the conductive member 20.
A thickness of the coupling member 50 (resin sheet) is not particularly limited, and is, for example, from 30 to 500 μm, preferably from 50 to 350 μm.
In a case where a plurality of conductive members 20 are provided, the coupling member 50 may couple the plurality of conductive members 20 together. In the coupling member 50, for example, a through hole may be provided, and each conductive member 20 may be inserted into each through hole and fixed to the coupling member 50.
In the securing member 30, a pressure-sensitive adhesive, an adhesive or the like is used. The pressure-sensitive adhesive is an adhesive that provides adhesion only by applying pressure at normal temperature. As the pressure-sensitive adhesive, a known pressure-sensitive adhesive is usable, and examples of the pressure-sensitive adhesive include an acrylic pressure-sensitive adhesive, urethane pressure-sensitive adhesive, silicone pressure-sensitive adhesive and rubber pressure-sensitive adhesive. The adhesive is not particularly limited, as long as having adhesiveness that can cause the metal terminal 10 to be bonded to the component 100 to be connected, and examples of the adhesive include a hot melt adhesive, thermosetting adhesive, ultraviolet-curable adhesive and moisture-curable adhesive.
In the securing member 30, the first securing surface 31 and second securing surface 32 may comprise an adhesive or pressure-sensitive adhesive, and preferably comprises a pressure-sensitive adhesive. When each securing surface comprises the pressure-sensitive adhesive, the connection component 1a and the component 100 to be connected can be secured only by bringing the connection component 1a comprising the securing member 30 into contact with the component 100 to be connected, followed by pressing.
As shown in
In a case of the pressure-sensitive adhesive layer alone, the pressure-sensitive adhesive layer may be laminated on a surface of the sheet-like coupling member 50. In a case of laminating the pressure-sensitive adhesive layer, the pressure-sensitive adhesive may be applied to the coupling member 50 with known means.
Also, in a case of the pressure-sensitive adhesive double coated tape, one pressure-sensitive adhesive layer may be bonded to the coupling member 50, and a surface of the other pressure-sensitive adhesive layer may be the first or second securing surface.
As the base material of the pressure-sensitive adhesive double coated tape, a known material for use as the base material of the pressure-sensitive adhesive double coated tape is usable, and examples of the base material include a resin film, nonwoven cloth and foam sheet.
(Exhaust Path)
In the present embodiment, the exhaust path 40 is a first exhaust groove 40a provided in the metal terminal 10, more specifically in the first main surface 11 of the metal terminal 10. The first exhaust groove 40a may be provided in a surface bonded to at least the securing member 30.
The first exhaust groove 40a is connected to the first securing surface 31, and can exhaust a babble generated in the first securing surface 31 (more specifically, an interface between the first securing surface 31 and the first main surface 11). Specifically, the exhaust path 40a can exhaust a babble generated in the first securing surface 31 (i.e., the above interface), when the securing member 30 is bonded to the metal terminal 10.
As shown in
The first exhaust groove 40a may be formed by general metal processing such as milling, laser processing or the like.
The first exhaust groove 40a may have any aspect as long as being able to exhaust the babble to the outside, and may be, for example, straight or curved. Also, respective linear grooves may cross one another, or do not have to cross.
As shown in
Also, the first exhaust groove 40a has a width that is, for example, from 0.1 to 5.0 mm, preferably from 0.2 to 3.0 mm, and has a depth that is, for example, from 0.01 to 2.0 mm, preferably from 0.02 to 1.0 mm.
Further, in the case where a plurality of conductive members 20 are provided, it is preferable that the first exhaust groove 40a (exhaust path 40) is disposed to be positioned between the conductive members 20 and 20. When the first exhaust groove 40a is disposed to be positioned between the plurality of conductive members 20, a babble likely to be generated between the conductive members 20 can be efficiently exhausted.
A positional relation between the first exhaust groove 40a provided in the first main surface 11 of the metal terminal 10 and the conductive member 20 will be more specifically described with reference to
First exhaust grooves 40a shown in
Each of the first exhaust grooves 40a shown in
In addition, in
The first exhaust groove 40a shown in
Furthermore, as shown in
Furthermore, the first exhaust groove 40a (exhaust path 40) may position the conductive member 20, when the conductive member is fixed to the metal terminal 10 with the securing member 30. For example, when the conductive member 20 is disposed to be sandwiched between or surrounded with the first exhaust grooves 40a as described above, each first exhaust groove 40a appropriately functions as a positioning member. In this case, if the first exhaust groove 40a is disposed to be in contact with the conductive member 20, the first exhaust groove 40a more appropriately functions for the positioning purpose.
(Connection Structure)
A connection structure 2a according to the first embodiment of the present invention comprises the connection component 1a that is mentioned above with the component 100 to be connected, as shown in
The conductive member 20 and the securing member 30 are arranged between the metal terminal 10 and the component 100 to be connected. For the securing member 30, the first and second securing surfaces 31 and 32 of the securing member 30 bonded to the metal terminal 10 and the component 100 to be connected, respectively. The securing member 30 secures the metal terminal 10 and the component 100 to be connected in such a manner that the conductive member 20 comes into contact with and is in a compressed state between both of the metal terminal 10 and the component 100 to be connected. Consequently, the metal terminal 10 and the component 100 to be connected are maintained in an electrically continuous state via the conductive member 20.
The component 100 to be connected comprises, for example, a member 110 to be connected, such as a glass plate, and a power feeding part 111 formed on a surface of the member 110 to be connected. The power feeding part 111 is a part for feeding power to a linear conductor such as a defroster, a defogger or an antenna element formed linearly on the surface of the member 110 to be connected. The conductive member 20 comes into contact with the power feeding part 111 to cause the metal terminal 10 and the member 110 to be connected to have electrical continuity.
In preparation of the connection structure 2a according to the first embodiment of the present invention, first the conductive member 20 and the securing member 30 coupled with the coupling member 50 are prepared, and next the first securing surface 31 of the securing member 30 is caused to be bonded to the first main surface 11 of the metal terminal 10 to obtain the connection component 1a. The obtained connection component 1a may be secured to the component 100 to be connected via the second securing surface 32 of the securing member 30, to obtain the connection structure 2a.
Alternatively, the connection structure 2a may be obtained by first securing, to the component 100 to be connected, the conductive member 20 and securing member 30 coupled with the coupling member 50, via the second securing surface 32, and then attaching the metal terminal 10 to the first securing surface 31.
According to the connection component 1a and connection structure 2a of the first embodiment of the present invention, the first exhaust groove 40a is provided as the exhaust path 40 in the first main surface 11 of the metal terminal 10, so that a babble generated in the first securing surface 31 of the securing member 30 can be suitably exhausted. In the connection component 1a and the connection structure 2a, when the babble is suitably exhausted, the metal terminal 10 can be securely and easily fixed to the component 100 to be connected in a state where the conductive member 20 is compressed, without any babbles remaining in the securing member 30.
A connection component 1b and a connection structure 2b according to a second embodiment are different from the connection component 1a and the connection structure 2a according to the first embodiment, respectively, in that an exhaust path 40 is provided in a first securing surface 31 of a securing member 30 that is bonded to a metal terminal 10, as shown in
Hereinafter, differences of the second embodiment from the first embodiment will be described. Also, hereinafter, even in the description of the different embodiment, a member having the same configuration will be denoted with the same reference sign.
The exhaust path 40 in
Description will be made as to the second exhaust groove 40b provided in the first securing surface 31 of the securing member 30, in more detail with reference to
Furthermore, the second exhaust groove 40b has a width that is, for example, from 0.05 to 5.0 mm, preferably from 0.2 to 3.0 mm, and has a depth that is, for example, from 0.01 to 2.0 mm, preferably from 0.02 to 1.0 mm.
Also, more specifically, second exhaust grooves 40b shown in
According to the connection component 1b and connection structure 2b of the second embodiment of the present invention, the second exhaust groove 40b is provided as the exhaust path 40 in the first securing surface 31 of the securing member 30, so that the babble generated in the first securing surface 31 of the securing member 30 can be suitably exhausted. In the connection component 1b and the connection structure 2b, when the babble is suitably exhausted, the metal terminal 10 can be securely and easily fixed to a component 100 to be connected in a state where the conductive member 20 is compressed, without any babbles remaining in the securing member 30.
A connection component 1c and a connection structure 2c according to a third embodiment are different from the connection component 1a and the connection structure 2a according to the first embodiment, respectively, in that an exhaust path 40 is provided in a second securing surface 32 of a securing member 30, as shown in
Hereinafter, difference of the third embodiment from the first embodiment will be described. Also, hereinafter, even in the description of the different embodiment, a member having the same configuration will be denoted with the same reference sign.
The exhaust path 40 in
The third exhaust groove 40c as the exhaust path 40 can be formed by general resin processing such as laser processing. Also, the securing member 30 provided on a peeling sheet having a projection and depression shape of a groove is peeled from the peeling sheet, so that the securing member 30 comprising the third exhaust groove 40c can be obtained.
Description will be made as to the third exhaust groove 40c provided in the second securing surface 32 of the securing member 30, in more detail with reference to
A configuration of the third exhaust groove 40c is similar to the configuration of the first exhaust groove 40a, and the third exhaust groove 40c may have a positional relation similar to the positional relation between the first exhaust groove 40a provided in the first main surface 11 of the metal terminal 10 and the conductive member 20 shown in
More specifically, third exhaust grooves 40c may be arranged in a grid pattern, or an X-pattern in the second securing surface 32, or two third exhaust grooves 40c may be provided, and arranged in parallel with each other, as shown in
According to the connection component 1c and connection structure 2c of the third embodiment of the present invention, the third exhaust groove 40c is provided as the exhaust path 40 in the second securing surface 32 of the securing member 30, so that the babble generated in the second securing surface 32 (i.e., an interface between the second securing surface 32 and the component 100 to be connected) can be suitably exhausted. In the connection component 1c and the connection structure 2c, the babble is suitably exhausted, so that a metal terminal 10 can be securely and easily fixed to the component 100 to be connected in a state where the conductive member 20 is compressed, without any babbles remaining in the securing member 30.
A connection component 1d according to a fourth embodiment is different from the connection component 1a according to the first embodiment in that an exhaust path 40 comprises a first exhaust hole 40d extending through a first main surface 11 and a second main surface 12 in a metal terminal 10, as shown in
The exhaust path 40 in
The first exhaust hole 40d as the exhaust path 40 can be formed by general metal processing such as milling, drilling, laser processing or the like.
It is preferable that the first exhaust hole 40d is disposed around a position to which a conductive member 20 is connected in the first main surface 11. Since the first exhaust hole 40d is disposed around the conductive member 20, a babble generated in the first securing surface 31 around the conductive member 20 can be exhausted through the first exhaust hole 40d. A shortest distance D4 between the first exhaust hole 40d and the conductive member 20 is preferably 15 mm or less, more preferably 10 mm or less, most preferably 0 mm, as described above. Specifically, as shown in
Furthermore, it is also preferable that the first exhaust hole 40d (exhaust path 40) is disposed to be positioned between conductive members 20 and 20, as shown in
The first exhaust hole 40d, although not particularly limited, may have a diameter larger than, the same as, or smaller than a diameter of the conductive member 20, and preferably has the diameter smaller than that of the conductive member 20, from a viewpoint of strength of the metal terminal 10, or the like. The diameter of the first exhaust hole 40d is not particularly limited, and is, for example, from 0.01 to 5 mm, preferably from 0.02 to 4.0 mm.
The first exhaust hole 40d may be configured to communicate with the first exhaust groove 40a described in the first embodiment, as shown in
Also, as shown in
To allow the first exhaust hole 40d to communicate with the first exhaust groove 40a or the second exhaust groove 40b, the first exhaust hole may be formed to overlap with a position where the first exhaust groove 40a or the second exhaust groove 40b is provided.
With the connection component 1d and a connection structure 2d of the fourth embodiment of the present invention, a babble generated in the first securing surface 31 of the securing member 30 can be suitably exhausted by providing the first exhaust hole 40d extending through the first main surface 11 and the second main surface 12 in the metal terminal 10. In the connection component 1d and the connection structure 2d, when the babble is suitably exhausted, the metal terminal 10 can be securely and easily fixed to a component 100 to be connected in a state where the conductive member 20 is compressed, without any babbles remaining in the securing member 30.
A connection component 1e according to a fifth embodiment is different from the connection component 1a according to the first embodiment in that an exhaust path 40 comprises a second exhaust hole 40e extending through a first securing surface 31 and a second securing surface 32 in a securing member 30, as shown in
The second exhaust hole 40e also extends through a coupling member 50, in addition to the securing member 30. Specifically, the second exhaust hole 40e is a through hole extending through a first securing part 33, the coupling member 50, and a second securing part 34. As shown in
As shown in
Also, as shown in
Further, as shown in
Description will be made as to the second exhaust hole 40e provided from the first securing surface 31 to the second securing surface 32 in the securing member 30, in more detail with reference to
As shown in
Furthermore, it is also preferable that the second exhaust hole 40e is disposed to be positioned between conductive members 20 and 20, in a case where a plurality of conductive members 20 are provided. The second exhaust hole 40e, although not particularly limited, may have a diameter larger than, the same as, or smaller than a diameter of the conductive member 20. However, it is preferable that the second exhaust hole 40e has a diameter smaller than that of the conductive member 20, from a viewpoint of preventing adhesive strength of the securing member 30 from being decreased. The diameter of the second exhaust hole 40e is not particularly limited, and may be, for example, from 0.01 to 5 mm, preferably from 0.02 to 4 mm.
More specifically, as shown in
To communicate with the first exhaust groove 40a, the second exhaust groove 40b, the third exhaust groove 40c, or the first exhaust hole 40d, the second exhaust hole 40e may be formed to overlap with a position where each groove or hole is provided. The second exhaust hole 40e and the first exhaust hole 40d are allowed to communicate, for example, by combining the second exhaust hole 40e shown in
According to the connection component 1e and a connection structure 2e of the fifth embodiment of the present invention, the second exhaust hole 40e extending through the first securing surface 31 and the second securing surface 32 in the securing member 30 is provided, so that a babble generated in at least one of the first securing surface 31 and the second securing surface 32 in the securing member 30 can be suitably exhausted. In the connection component 1e and the connection structure 2e, when the babble is suitably exhausted, a metal terminal 10 can be securely and easily fixed to the component 100 to be connected in a state where the conductive member 20 is compressed, without any babbles remaining in the securing member 30.
Note that in the above description of the fifth embodiment, the configuration is described where the exhaust path 40 comprises one of the first exhaust groove 40a, the second exhaust groove 40b, the third exhaust groove 40c, and the first exhaust hole 40d, in addition to the second exhaust hole 40e. However, the first exhaust groove 40a, the second exhaust groove 40b, the third exhaust groove 40c and the first exhaust hole 40d may not be provided, and the exhaust path 40 may comprise the second exhaust hole 40e alone.
Also, in a case where the exhaust path 40 comprises the second exhaust hole 40e alone, for example, in a case where the securing member 30 and the conductive member 20 are attached to the metal terminal 10 before secured to the component 100 to be connected, the babble generated in the first securing surface 31 (i.e., an interface between the first securing surface 31 and the metal terminal 10) can be exhausted to outside via the second exhaust hole 40e.
Further, when the securing member 30 and the conductive member 20 are attached to the metal terminal 10 and then the securing member 30 and the conductive member 20 are attached to the component 100 to be connected, the second exhaust hole 40e does not communicate with outside. However, as will be described later, for example, in a sixth embodiment, a gas in the first or second securing surface 31 or 32 can be released into the second exhaust hole 40e by use of a volume difference in gas with temperature change.
Also, the second exhaust hole 40e is not limited to a hole in which a hollow space is present, and may be a notch extending from the first securing surface 31 to the second securing surface 32, and the second exhaust hole 40e may also include such a notch. Note that the first exhaust hole 40d may be a notch as well. The notch may be a notch with a substantially uniform width, or may be, for example, an elliptic notch with a varying width. The notch may have a length larger than a diameter of the first exhaust hole 40d or the second exhaust hole 40e. For example, the length may increase to about 4 mm to 10 mm, or may be long so as to reach an outer edge of the metal terminal 10 or the securing member 30.
A connection component if according to a sixth embodiment is different from the connection component 1a according to the first embodiment in that an exhaust path 40 is a bottomed hole 40f, as shown in
The exhaust path 40 in
The exhaust path 40 in
Note that the bottomed hole 40f provided in the securing member 30 may extend through or does not have to extend through the coupling member 50, or may extend halfway through the coupling member 50. Furthermore, a surface of the coupling member 50 may form a bottom surface of the bottomed hole 40f.
A gas exists in advance in the bottomed hole 40f, and hence the babble is kept inside by using a volume difference in gas. Specifically, when causing the securing member 30 to be bonded to the metal terminal 10 or the component 100 to be connected, the gas in the bottomed hole 40f is expanded by performing a heating treatment, and the gas in the bottomed hole 40f is then contracted by lowering a temperature to normal temperature, to make room in the bottomed hole 40f, so that the babble can be kept inside.
The bottomed hole 40f as the exhaust path 40 may be formed by general metal processing such as milling or laser processing, and general resin processing such as laser processing. Also, for the securing member 30, the securing member 30 provided on a peeling sheet having a projection and depression shape of a hole is peeled from the peeling sheet, so that the securing member 30 comprising the bottomed hole 40f can be obtained.
According to the connection component if and a connection structure 2f of the sixth embodiment of the present invention, the bottomed hole 40f is provided in at least one of the metal terminal 10 and the securing member 30, so that a babble generated in at least one of the first securing surface 31 and the second securing surface 32 in the securing member 30 can be suitably stored. In the connection component if and the connection structure 2f, when the babble is suitably stored, the metal terminal 10 can be securely and easily fixed to the component 100 to be connected in a state where the conductive member 20 is compressed, without any babbles remaining in the securing member 30.
A connection component 1g according to a seventh embodiment is different from the connection component 1a according to the first embodiment in that a second main surface 12 of a metal terminal 10 comprises a projection 60, as shown in
In the present embodiment, as shown in
In a case where the metal terminal 10 is provided with the projection 60, pressure acts on and in the vicinity of the projection 60, when a conductive member 20 is fixed to the metal terminal 10 with a securing member 30, while supporting the projection 60. Consequently, a babble generated when the securing member 30 is bonded to the metal terminal 10 can be efficiently discharged to outside via an exhaust path 40 such as the exhaust groove 40g.
Note that in the case where the projection 60 is provided, an exhaust groove to be provided in the metal terminal 10 may be the exhaust groove 40g provided in the interior of the projection 60 alone, as shown in
It is preferable that the projection 60 is provided in a portion corresponding to a portion where a babble is easily generated in the securing member 30. That is, it is preferable to provide the projection 60 in the vicinity of a position where the conductive member 20 is disposed and thus a babble is easily generated. Specifically, a shortest distance D6 between the projection 60 and the conductive member 20 in planar view in a thickness direction (see
Also, in the case where the projection 60 is provided, a second exhaust groove 40b (see
The number of projections 60 may be one as shown in
Furthermore, the metal terminal 10 does not have to be a flat plate. For example, the second main surface 12 that is an opposite surface to the first main surface 11 may consist of a combination of inclined surfaces. For example, as shown in
The metal terminal 10 comprising the projection 60 may be formed by bending, casting or the like. For example, in bending, the exhaust groove 40g reaching an edge of the metal terminal 10 can be formed in the interior of the projection 60 only by bending a plate for forming the metal terminal, as shown in
According to the connection component 1g and a connection structure 2g of a seventh embodiment of the present invention, the second main surface 12 of the metal terminal 10 comprises the projection 60, so that the babble generated in the securing member 30 can be suitably exhausted. In the connection component 1g and the connection structure 2g, when the babble is suitably exhausted, the metal terminal 10 can be securely and easily fixed to a component 100 to be connected in a state where the conductive member 20 is compressed, without any babbles remaining in the securing member 30.
A connection component 1h according to an eighth embodiment is different from the connection component according to each of the above embodiments in that a first main surface 11 of a metal terminal 10 comprises a portion in contact with a conductive member 20, the portion being in a projection shape 70, as shown in
The projection shape 70 is a projecting portion with a vertex being the portion in contact with the conductive member 20 in the first main surface 11 of the metal terminal 10. The projecting portion 70 is a starting point to press the conductive member 20, when the connection component 1h is attached to a component 100 to be connected. Therefore, when pressing from a second main surface 12 side of the connection component 1h, pressure concentrates on the projecting portion 70, and the conductive member 20 can be easily pressed against the component 100 to be connected. Consequently, the conductive member 20 can be appropriately compressed, and thus the connection component 1h can be firmly and easily secured to the component 100 to be connected.
The number of projecting portions 70 may be one or more. From a viewpoint of keeping the conductive member 20 in a compressed state efficiently, it is preferable that the number of the projecting portions 70 corresponding to the number of arranged conductive members 20 are provided in accordance with portions where the conductive members 20 are arranged.
A shape of the projecting portion 70 is not particularly limited, and the projecting vertex may be planar as shown in
Also, in a case where the projection shape 70 is provided, it is only required that one of the above exhaust paths 40 is provided. For example,
According to the connection component 1h and a connection structure 2h of the eighth embodiment of the present invention, when the first main surface 11 of the metal terminal 10 comprises the projecting portion 70, the conductive member 20 can be easily in a compressed state. Also, a babble can be exhausted through an exhaust path 40 without remaining in a securing member 30.
The above description illustrates examples where as the exhaust path 40, the first exhaust groove 40a (first embodiment), the second exhaust groove 40b (second embodiment), the third exhaust groove 40c (third embodiment), the first exhaust hole 40d (fourth embodiment), the second exhaust hole 40e (fifth embodiment) and the bottomed hole 40f (sixth embodiment) are provided, and they may be suitably combined. For example, as in a connection component 1i and a connection structure 2i shown in
Further, there are separately illustrated a form (seventh embodiment) where the second main surface 12 of the metal terminal 10 comprises the projection 60 and a form (eighth embodiment) where the first main surface 11 of the metal terminal 10 has the projection shape 70, and these forms may be combined.
Specifically, the respective embodiments described above may be suitably combined, and all the embodiments may be combined, too.
Furthermore, in the above respective embodiments, the coupling member 50 couples the securing member 30 and the conductive member 20, but the coupling member 50 may be omitted. In a case where the coupling member 50 is omitted, the securing member 30 is directly bonded to the conductive member 20, so that the conductive member 20 and the securing member 30 may be integrated. However, the securing member 30 and the conductive member 20 do not necessarily have to be integrated. For example, the conductive member 20 and the securing member 30 may be separately attached to the metal terminal 10 to produce a connection component.
The present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.
Two conductive members 20 each having a diameter of 2.0 mm and a height (thickness) of 0.7 mm were coupled by a PET film (coupling member 50) with a thickness of 100 μm. Each conductive member 20 comprised the conductive part 21 and the insulation part 22 shown in
The same procedure as in Example 1 was conducted except that a shape of the first exhaust groove 40a was changed as shown in Table 1.
The same procedure as in Example 1 was conducted except that in place of the first exhaust groove 40a, a first exhaust hole 40d was provided in a pattern shown in Table 1 in the metal terminal 10. The first exhaust hole 40d had a diameter of 2.0 mm.
The same procedure as in Example 1 was conducted except that in addition to the first exhaust groove 40a, a first exhaust hole 40d was provided in a pattern shown in Table 1 in the metal terminal 10. The first exhaust hole 40d had a diameter of 2.0 mm.
The same procedure as in Example 1 was conducted except that in addition to the first exhaust groove 40a, a second exhaust hole 40e was provided in a pattern shown in Table 1 in the securing member 30. In Example 6, the second exhaust hole 40e had a major diameter of 5.0 mm and a minor diameter of 1.5 mm. In Examples 7 and 8, the second exhaust holes 40e had diameters of 1.5 mm and 1.5 mm, respectively.
The same procedure as in Example 1 was conducted except that in place of the first exhaust groove 40a, a first exhaust hole 40d was provided in the metal terminal 10 and a second exhaust hole 40e was provided in the securing member 30, in patterns shown in Table 2. The first exhaust hole 40d had a diameter of 2.0 mm. The second exhaust hole 40e had a major diameter of 3.0 mm and a minor diameter of 1.5 mm.
The same procedure as in Example 1 was conducted except that metal terminals 10 were used, the metal terminals 10 comprising projections 60 shown in
The same procedure as in Example 1 was conducted except that a metal terminal was used, the metal terminal comprising a projection 60 shown in
The same procedure as in Example 1 was conducted except that in place of the first exhaust groove 40a, second exhaust grooves 40b were provided in a pattern shown in Table 2 in the securing member 30. Each second exhaust groove 40b had a width of 0.075 mm and a depth of 0.025 mm, and a pitch between adjacent grooves was 0.710 mm.
The same procedure as in Example 1 was conducted except that in addition to first exhaust grooves 40a, second exhaust grooves 40b were provided in a pattern shown in Table 2 in the securing member 30. Each second exhaust groove 40b had a width of 0.075 mm and a depth of 0.025 mm, and a pitch between adjacent grooves was 0.710 mm.
The same procedure as in Example 1 was conducted except that in place of the first exhaust groove 40a, third exhaust grooves 40c were provided in a pattern shown in Table 2 in the securing member 30. Each third exhaust groove 40c had a width of 0.075 mm and a depth of 0.025 mm, and a pitch between adjacent grooves was 0.710 mm.
The same procedure as in Example 1 was conducted except that in addition to first exhaust grooves 40a, third exhaust grooves 40c were provided in a pattern shown in Table 2 in the securing member 30. Each third exhaust groove 40c had a width of 0.075 mm and a depth of 0.025 mm, and a pitch between adjacent grooves was 0.710 mm.
The same procedure as in Example 1 was conducted except that an exhaust path was not provided.
(Evaluation Criteria)
In each of the connection structures obtained in the respective examples and the comparative example, a babble generation state was examined in a first adhering surface (an interface between the first adhering surface and a first main surface) and a second adhering surface (an interface between the second adhering surface and an adherend component), and performances of connection components and the connection structures were evaluated. Table 1 shows the results. Note that signs used in the evaluation result shown in Table 1 indicate the following meanings.
A: Cells were substantially completely removed from near a conductive member in each of the first adhering surface and the second adhering surface.
B1: In the first adhering surface, a babble mass near the conductive member was substantially removed and reduced in size. Also, in the second adhering surface, a babble mass near the conductive member was substantially removed and reduced in size.
B2: A babble near the conductive member in the first adhering surface was substantially completely removed. On the other hand, a babble mass in the second adhering surface was not removed.
B3: A babble near the conductive member in the second adhering surface was substantially completely removed. On the other hand, a babble mass in the first adhering surface was not removed.
C: Cell masses in the first and second adhering surfaces were not removed.
In the above respective examples, the exhaust path was provided, and hence it was possible to appropriately remove the babble generated in the first adhering surface and/or the second adhering surface. On the other hand, in Comparative Example 1, the exhaust path was not provided, and hence it was not possible to appropriately remove the babble generated in each of the first adhering surface and the second adhering surface.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2019-148144 | Aug 2019 | JP | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2020/030087 | 8/5/2020 | WO |
