WO2014141768A1

WO2014141768A1 - Contact and electronic component

Info

Publication number: WO2014141768A1
Application number: PCT/JP2014/052301
Authority: WO
Inventors: 学芝山; 幸二 ▲高▼見
Original assignee: オムロン株式会社
Priority date: 2013-03-15
Filing date: 2014-01-31
Publication date: 2014-09-18
Also published as: JP2014179261A; JP5991240B2

Abstract

Provided are a contact, in which the electrical durability performance is improved by making an end part of a contact point intentionally warp by turning on and off of electricity, and an electronic component that uses the same. The contact is provided with a contact point and terminal plate. The contact point is provided with a joining part that joins with the terminal plate and a non-joining part that does not contribute to joining with the terminal plate. A value obtained by using the thickness of the non-joining part, the maximum length of the joining part, and the maximum length of the non-joining part in a prescribed formula is greater than a prescribed value.

Description

Contacts and electronic components

The present invention relates to a contactor and an electronic component. Specifically, the present invention relates to a contact whose electrical endurance performance is improved by intentionally warping the end of a contact by energization opening and closing, and an electronic component using the contact.

In general, relays and switches that are commercially available use contacts. In addition, due to the recent downsizing and thinning of electrical appliances, relays and switches are also required to be small and thin. Along with this, the head thickness of the contacts attached to the spring material of the relay or switch is gradually becoming thinner. In addition, with the generalization of relays and switches, the load on the contacts has increased.

General contacts have a rivet shape, and the diameter differs between the side that contacts the opposing contact (head) and the side that deforms by caulking (leg). Therefore, the outer peripheral part of the head warps when the contact is heated by energization opening and closing.

As a result, there is a problem that the contact may cause a welding failure due to the arc concentrating on the warped portion, the contact behavior changing, the contact area increasing, and the like. Further, since the contact is warped and the contact area is increased, welding occurs, so that there is a problem that an expensive contact material is left and a failure occurs.

As a technique for suppressing the warping of the contact with respect to these problems, a method of reducing the difference between the head diameter and the foot diameter of the contact by providing a taper at the opening edge on the rivet contact insertion side (Patent Document 1), rivet A method of forming the caulking portion of the contact eccentrically in the arc driving direction (Patent Document 2) is employed.

Japanese Patent Publication “Japanese Patent Laid-Open No. 63-174228 (published July 18, 1988)” Japanese Patent Publication “Japanese Patent Laid-Open No. Sho 62-234811 (Published on Oct. 15, 1987)”

However, the technique disclosed in Patent Document 1 can reduce the generation speed of the warp because the beam length of the non-joining portion (the portion of the contact portion that does not participate in joining with the terminal or the like) can be reduced. As the head wears down, there is a problem that warping occurs due to a reduction in head thickness.

Further, in the technique disclosed in Patent Document 2, since the leg portion of the contact is shifted from the center of the head, the non-joined portion becomes extremely long in the direction opposite to the arc driving direction. Therefore, processing becomes difficult. Further, although it is necessary to caulk the eccentric position so that it is closer to the arc driving direction than the center, it is expected that misalignment is likely to occur when such caulking is performed. In addition, the techniques disclosed in

Patent Documents

1 and 2 cannot solve the conventional problem, that is, the problem that a failure occurs with the contact material remaining. From the above, a new technique that replaces the above technique is desired.

The present invention has been made in view of the above-described conventional problems, and the object thereof is a contact having improved electrical durability performance by intentionally deflecting the end of the contact by energization switching, and It is to provide an electronic component using this.

In order to solve the above problems, a contact according to the present invention is a contact comprising a contact and a terminal plate,
The contact includes a joining portion that joins the terminal plate, and a non-joining portion that does not participate in joining the terminal plate,
The thickness of the non-joined part is h,
B is the maximum length of the joint in the cross section in which the contact is cut by a plane parallel to the joint between the joint and the terminal plate;
When the maximum length of the non-joining portion in the cross section is L and (L / h) ³ / b is α, the following formula 1
α (1 / mm) = (L / h) ³ /b>1.87 (Formula 1)
It is characterized by satisfying.

The present invention has an effect that the failure due to welding between the contacts can be reduced and the opening / closing performance of a switch or the like can be remarkably improved. Furthermore, since the wear occurs at the center of the contact after the end of the non-joint portion provided in the contact is exhausted, there is an effect that the expensive silver material used for the contact can be used up.

It is a schematic diagram which shows the contact with which the contactor concerning 1st embodiment of this invention is provided, Comprising: (a) of FIG. 1 is a longitudinal cross-sectional view of a contact, (b) of FIG. 1 is a cross-sectional view. It is the perspective view which showed typically the external appearance of the contact with which the contactor concerning 1st embodiment of this invention is provided. It is a schematic diagram showing the longitudinal cross-section which shows the state which joined the contact to the terminal board. It is a schematic diagram which shows the contact with which the contactor concerning 2nd embodiment of this invention is provided, (a) of FIG. 4 is a longitudinal cross-sectional view of a contact, (b) of FIG. 4 is a cross-sectional view. It is a schematic diagram which shows the contact with which the contact concerning 3rd embodiment of this invention is provided, (a) of FIG. 5 is a longitudinal cross-sectional view of a contact, (b) of FIG. 5 is a cross-sectional view. It is a schematic diagram which shows the cross section of the contact with which the contactor concerning 4th embodiment of this invention is provided. It is a schematic diagram which shows the cross-sectional view of the contact with which the contactor concerning 5th embodiment of this invention is provided. It is a schematic diagram which shows the cross-sectional view of the contact with which the contactor concerning 6th Embodiment of this invention is provided. It is a schematic diagram which shows the result of having energized opening and closing the switch using the contactor concerning this invention, and the switch using the conventional contactor, and confirming the state of contact consumption and curvature. It is a perspective view which shows the structure of the switch (switch) which is an electronic component concerning this invention. 5 is a graph created for the contacts a to f and the comparative contacts a to f according to the present invention, based on the test results, with α calculated from the equation 1 on the horizontal axis and the number of opening and closing on the vertical axis.

Hereinafter, an example of an embodiment of the present invention will be described in detail, but the present invention is not limited thereto. For convenience of explanation, members having the same function are denoted by the same reference numerals and description thereof is omitted.

<First embodiment>
The contact according to the present invention is a contact comprising a contact and a terminal plate,
The contact includes a joining portion that joins the terminal plate, and a non-joining portion that does not participate in joining the terminal plate,
The thickness of the non-joined part is h,
B is the maximum length of the joint in the cross section obtained by cutting the contact by a plane parallel to the joint between the joint and the terminal plate;
When the maximum length of the non-joining portion in the cross section is L and (L / h) ³ / b is α, the following formula 1
α (1 / mm) = (L / h) ³ /b>1.87 (Formula 1)
Meet.

The contact according to the present invention includes a contact and a terminal plate. The contact preferably includes a silver alloy as a material. Thereby, the electrical conductivity of the said contact can be made high. The silver alloy is not particularly limited as long as it is a general silver alloy (AgNi series, AgSn series, etc.). The Young's modulus of the AgSn alloy is 315 to 380 MPa, and the Young's modulus of AgNi is 250 to 400 MPa.

The terminal board is not particularly limited, and for example, a conventionally known terminal board mainly composed of copper or the like can be used.

Hereinafter, a first embodiment of a contact according to the present invention will be described with reference to FIGS. 1A and 1B are schematic views showing a contact 1 provided in the contact 100 according to the first embodiment. FIG. 1A is a longitudinal sectional view of the contact 1, and FIG. It is a cross-sectional view. FIG. 2 is a perspective view schematically showing the appearance of the contact 1. FIG. 3 is a schematic diagram showing a longitudinal section showing a state in which the contact 1 is joined to the terminal plate 4.

The contact 1 includes a joint portion 2 that joins the terminal plate 4 and a non-joint portion 3 that does not participate in joining the terminal plate 4. As shown in FIG. 3, the contact 1 is joined to the terminal plate 4 by the joint 2. The joining method is not particularly limited, and methods such as resistance welding and brazing can be used. The junction 2 is preferably located at the center of the contact 1 as much as possible, for example, as shown in FIGS.

However, the joint 2 may be provided at a position eccentric from the center in the contact 1. Here, for example, since the contact point disclosed in Patent Document 2 is a rivet contact point, misalignment is likely to occur when it is fixed to the round hole. On the other hand, since the contact 1 has a so-called tape shape instead of a rivet shape in the present invention, the feeding direction is determined. Therefore, even if the joint portion 2 is provided at a position that is eccentric from the center in the contact 1, there is almost no fear that the position shift occurs.

The non-joining part 3 may be in contact with the terminal plate 4, or a space may exist between the non-joining part 3 and the terminal plate 4. No connection force is applied between the terminal board 4 and the terminal board 4. That is, the contact 1 is joined to the terminal plate 4 only by the joint 2.

In addition, the said cross section can be obtained by cut | disconnecting the contact 1 by a surface parallel to the joint surface (joint surface 5 shown in FIG. 3) of the junction part 2 and the terminal board 4. FIG. The longitudinal section can be obtained by cutting the contact 1 by a plane perpendicular to the joint surface 5 between the joint portion 2 and the terminal plate 4. The joint surface 5 is formed by fixing the mutually facing surfaces of the joint portion 2 and the terminal plate 4 by resistance welding or the like.

The contact according to the present invention needs to satisfy the above formula 1. In the conventional contact, when the contact is subjected to energization opening and closing and repeatedly contacts with the opposite contact, the head of the contact (corresponding to the non-joined portion 3 in the contact 1) is usually consumed. When the wear occurs, the contact area between the contact points facing each other increases. Then, after the contact area is increased, the fixed contacts are warped, the contacts that are opposed to each other are welded, and it is difficult to separate the contacts by simply turning off the switch.

On the other hand, since the contact according to the present invention satisfies the above formula 1, when the contact 1 provided in the contact 100 is subjected to energization opening and closing, the head of the contact is not first consumed like a conventional contact. In other words, the non-joining portion 3 included in the contact 1 warps in the direction of the contact point facing the contact point 1.

And, since only the end portion of the warped non-joining portion 3 is in contact with the head of the opposing contact, the contact area between the contacts can be reduced. Therefore, welding between the contacts is unlikely to occur, and for example, it is possible to maintain a long time during which the contacts can be separated only by a force for separating the contacts when no current is flowing.

The “end portion of the non-joining portion” means that the base portion of the joining portion 2 (boundary between the joining portion 2 and the non-joining portion 3) is formed at the contact 1 in the longitudinal section. A region obtained by extending a region (contact central portion 3 ′) obtained by extending toward the surface opposite to the surface from the non-joined portion 3. For example, in FIG. 1A, a region obtained by removing the contact center portion 3 ′ from the non-joining portion 3 corresponds to the end portion of the non-joining portion 3.

Therefore, the above equation 1 will be described with reference to FIGS. In Formula 1, h is the thickness of the non-joining part 3, and in the longitudinal section in which the contact 1 is cut by a plane perpendicular to the joining surface 5 between the joining part 2 and the terminal plate 4 as shown in FIG. 3 can be obtained by measuring the length of the perpendicular drawn from the base of the joint 2 on the surface opposite to the surface where the joint 2 is present. In FIG. 3, h is 0.36 mm.

In Equation 1, b is the maximum length of the joint 2 in a cross section obtained by cutting the contact 1 with a plane parallel to the joint surface 5 between the joint 2 and the terminal plate 4. The cross section is, for example, the surface shown in FIG. In Formula 1, L is the maximum length of the non-joining part 3 in the said cross section.

“Maximum length of the joint” refers to a tangent drawn to the shape obtained by connecting the outermost points of the cross-sectional shape of the joint 2 found in the cross section, and the outer peripheral portion of the non-joint 3 It is the length between the crossing points and the length that can maximize the length of the non-joined portion.

The “length of the non-joined portion” refers to the length of a perpendicular line extending from the outer peripheral portion of the non-joined portion 3 to the intersection point located on the tangent line in the cross section.

For example, in the cross section shown in FIG. 1B, the cross-sectional shape of the joint 2 is a rectangle. In this case, the shape obtained by connecting the outermost points of the rectangle is the outer periphery of the rectangle (four sides of the rectangle).

The tangent drawn with respect to the shape corresponds to the tangent drawn with respect to the two long sides and the tangent drawn with respect to the two short sides. At this time, each tangent is obtained by extending each side of the rectangle. And about each tangent, two intersections with the outer peripheral part (in this case, a square side) of the non-joining part 3 are obtained (in this case, an intersection corresponds with the vertex of a rectangle).

At this time, between the intersections of the tangent lines drawn with respect to the short side (between a and c and between a ′ and c ′ in the figure) is the outer peripheral portion of the joint portion 2, so Can't make a perpendicular from Accordingly, the perpendicular line can be drawn from the outer peripheral portion of the non-joining portion 3 between the intersection points a and a 'or between the intersection points c and c'.

And the length of the perpendicular line (L shown in the figure) between the intersection points a and a ′ or between the intersection points c and c ′ from the outer peripheral portion of the non-joining portion 3 is from the outer peripheral portion of the non-joining portion 3 to the tangent line. This is the maximum length of the perpendicular drawn between the intersections.

From the above, the maximum length of the joint portion 2 is the length between the intersection points a and a 'or between the intersection points c and c' (b shown in the figure). In addition, the maximum length of the non-joining portion 3 is the length of the perpendicular line (L in the figure) drawn from the outer periphery of the non-joining portion 3 between the intersection points a and a 'or between the intersection points c and c'.

That is, the “maximum length of the non-joined portion” is the longest length of the “length of the non-joined portion”. In other words, in the cross section, it refers to the longest length among the lengths of the perpendiculars drawn from the outer peripheral portion of the non-joining portion 3 with respect to the tangent line defining the b.

In the cross section shown in FIG. 1 (b), the length of the perpendicular drawn from the side of the non-joint portion 3 parallel to the long side corresponds to the long side of the joint portion 2 that is rectangular. Therefore, L shown in the figure is the maximum length of the non-joining portion 3.

<Second Embodiment>
FIG. 4 is a schematic view showing a contact included in the contact according to the second embodiment of the present invention, and is a longitudinal sectional view (FIG. 4A) and a cross-section of the contact 1a whose joint surface has a circular shape. FIG. 4 is a plan view ((b) of FIG. 4).

4B, the cross-sectional shape of the joint 2 is a circle. In this case, the shape obtained by connecting the outermost points of the circle is the outer periphery of the circle. The tangent drawn with respect to the outer periphery of the circle corresponds to, for example, the tangent A shown in FIG. As intersections between the tangent line A and the outer peripheral portion of the non-joining portion 3, a and a 'shown in FIG. In this case, the length of the perpendicular line between the intersections a and a 'located on the tangent line A from the outer peripheral portion (circumference in this case) of the non-joined portion 3 is constant at L shown in the figure.

Accordingly, the maximum length of the non-joined portion 3 is L shown in the figure, and the maximum length of the joined portion 2 is the length between the intersection points a and a ′ of the joined portion 2 that is a circle (b shown in the figure). )

<Third embodiment>
FIG. 5 is a schematic view showing a contact provided in the contact according to the third embodiment of the present invention, in which the shape of the joining surface is a circle, and there is a space between the joined portion and the non-joined portion. 1b shows a longitudinal sectional view (FIG. 5 (a)) and a transverse sectional view (FIG. 5 (b)).

5B, the cross-sectional shape of the joint 2 is a circle, and a space 6 exists between the joint 2 and the non-joint 3. In this case, the shape obtained by connecting the outermost points of the circle which is the cross-sectional shape of the joint portion 2 is the outer periphery of the circle. The tangent drawn with respect to the outer periphery of the circle corresponds to, for example, the tangent A shown in FIG. As intersections between the tangent line A and the outer peripheral portion of the non-joining portion 3, a and a ′ shown in FIG. In this case, the length of the perpendicular line between the intersections a and a 'located on the tangent line A from the outer peripheral portion (circumference in this case) of the non-joined portion 3 is constant at L shown in the figure.

Therefore, the maximum length of the non-joining portion 3 is L shown in the figure, and the maximum length of the joining portion 2 is the length between the intersection points a and a ′ of the joining portion 2 that is a circle (b shown in the drawing). )

(A) of FIG. 5 shows the longitudinal cross-section which cut | disconnected the contact 1b by the plane perpendicular | vertical to the terminal board 4. FIG. In the contact 1 b, a space 6 exists between the joint 2 and the non-joint 3. Therefore, the thickness of the non-joining part 3 is the length of a perpendicular line extending from the base of the joining part 2 to the surface of the non-joining part 3 opposite to the surface where the joining part 2 exists. It becomes.

<Fourth embodiment>
FIG. 6 is a schematic diagram illustrating a cross-sectional view of a contact provided in the contact according to the fourth embodiment. In the contact 1c shown in FIG. 6, the joint 2 has a square cross-sectional shape, and the shape obtained by connecting the outermost points of the cross-sectional shape is a square outer periphery (four sides).

The intersections of the tangent line (corresponding to the square side) drawn with respect to the outer periphery of the square and the non-joined portion 3 are a and a ′ shown in the figure. At this time, the longest length of the perpendicular line extending from the outer peripheral part of the non-joint part 3 to the intersections a and a ′ located on the tangent line is the perpendicular line drawn from the apex of the non-joint part 3. .

Therefore, the length of the perpendicular (L shown in the figure) is the maximum length of the non-joined portion 3. In addition, b in the figure, which is the length between the intersection points a and a ′ and can maximize the length of the non-joined portion 3, is the maximum length of the joined portion.

<Fifth embodiment>
FIG. 7 is a schematic diagram illustrating a cross-sectional view of a contact provided in the contact according to the fifth embodiment. The contact 1d shown in FIG. 7 includes three joints, and the cross-sectional shape of the joints is such that the three joints 2a to 2c are located at the vertices of an isosceles triangle. At this time, the shape obtained by connecting the outermost points of the cross-sectional shape is an isosceles triangle, and the tangent line drawn to the isosceles triangle is a straight line obtained by extending each side of the isosceles triangle.

For each tangent, two intersections with the non-joining part 3 are obtained. At this time, the length of the perpendicular drawn between the intersections located on the tangent line from the outer peripheral part of the non-joint part 3 becomes the longest from the vertex of the non-joint part 3 to the intersection points a and a shown in the figure. 'A vertical line between them.

Therefore, the length of the perpendicular (L shown in the figure) is the maximum length of the non-joined portion 3. Then, if b in the figure which is the length between the intersection points a and a ′ and can maximize the length of the non-joined portion 3 is the “maximum length of the joined portion”. Good.

<Sixth embodiment>
FIG. 8 is a schematic diagram showing a cross section of a contact provided in the contact according to the sixth embodiment. The joint 2 of the contact 1e shown in FIG. 8 has a star shape in cross section. The shape obtained by connecting the outermost points of the star shape is a pentagon indicated by a dotted line in the figure, and the tangent line drawn to the pentagon is a straight line obtained by extending each side of the pentagon.

As described above, the cross-sectional shape of the joint portion 2 is not particularly limited, and based on the shape obtained by connecting the outermost points of the cross-sectional shape of the joint portion 2 seen in the cross section. The maximum length of the part 2 and the maximum length of the non-joining part 3 can be obtained. Furthermore, by obtaining the thickness of the non-joining portion 3, L, b, and h in Formula 1 can be determined.

In addition, the measuring method of said L, b, and h is not specifically limited. For example, the measured values of L, b, and h can be obtained by using a conventionally known micrometer or the like.

<Contact according to the present invention>
The contact 100 according to the present invention has a structure in which the non-joining portion 3 is likely to warp in order to satisfy Formula 1. In other words, the non-joining portion 3 is intentionally easily warped. Since the shape of the joint 2 when the joint 2 of the contact 1 is joined to the terminal plate 4 is controlled so as to satisfy the formula 1, the contact 100 according to the present invention is a conventional contact. It is an electric contact with improved electrical durability than the child.

Formula 1 is provided to evaluate the ease of bending of the contact and serves as an index of the ease of warping of the contact. In other words, assuming the phenomenon of warping of the non-joined part 3 as warping of the cantilever beam, Chapter 7 of “How to determine the design calculation formula and specifications of a thin leaf spring” defined in JIS B2713 (2009). This is derived with reference to section 1 (a).

The warpage amount δ can be expressed by the following formula A by converting the formula (1) defined in Chapter 7 section 7.1 (a) of JIS B2713.

Here, P is the force exerted on the warpage by the contact opening and closing, and E is the Young's modulus. L, b, and h are as described above. Among these, the factors related to the contact shape (factors involved in the shape change due to the warping of the contact) are L, b, and h. Therefore, α = (L / h) ³ / b (unit: 1 / mm) in the formula A was used as an index of ease of bending.

In the contact 100 according to the present invention, α (1 / mm) = (L / h) ³ /b>1.87. This is because, in the examples and comparative examples to be described later, the relationship between α and the number of opening and closing of the switch using the contact according to the present invention is measured. This is based on the fact that the number of times of opening and closing is better than that of the conventional switch even under the condition of applying. In other words, since the contact according to the present invention satisfies Equation 1, it is possible to greatly increase the number of times of opening and closing until a welding failure or contact failure occurs.

For example, in the case of a conventionally known rivet contact, if the head thickness of the contact is made thin, only α having a shape of about 0.5 to 1.3 can be made. The contact 1 provided in the contact 100 according to the present invention has a completely different structure from such a conventionally known rivet contact.

When L, b, and h satisfy Expression 1, the contact 1 of the contactor 100 according to the present invention forms the bonding surface 5 with the terminal plate 4 only by the bonding portion 2 and the non-bonding portion 3 faces. The shape tends to warp toward the contact side. As a result, the end of the non-joining part 3 comes into contact with the head of the opposing contact and the contact area can be reduced, so that the number of times of opening and closing can be greatly increased. Moreover, the problem that the contact 1 drops off from the terminal board 4 does not occur as shown in the embodiments described later.

In the formula 1, the α is preferably 2.25 (1 / mm) or more and 4.25 (1 / mm) or less. As the number of times that contacts can be opened and closed described in the catalogs of each manufacturer is generally 100,000 times, when the contact 100 according to the present invention is used, it is sufficient as shown in the examples described later. Even under conditions of excessive overloading, it was possible to achieve 100,000 switching times of 130% increase or more.

The above α may exceed 4.25 (1 / mm). Since there is a possibility that the number of times of opening and closing can be further increased from the results of examples described later, the problem of the present invention can also be solved in this case. However, since the joint surface 5 becomes narrower, the α is preferably 2.25 (1 / mm) or more and 4.25 (1 / mm) or less in order to make it difficult for the contact to drop off.

Further, α can be made larger than 4.25 (1 / mm) by making the width of the joint portion 2 constant and increasing the L, but the silver alloy which is the main component of the contact 1 is Since it is expensive, the α is preferably 2.25 (1 / mm) or more and 4.25 (1 / mm) or less from the viewpoint of cost. The “width of the joint 2” is the length indicated by d in FIG.

The contact 100 according to the present invention may be a fixed contact or a movable contact, but is preferably a fixed contact. Even when the contact 100 is used as a movable contact, for example, in a switch, only the end of the non-joining portion 3 provided in the contact 1 of the contact 100 can be brought into contact with the contact head of the opposing fixed contact. The effects of the present invention can be achieved.

On the other hand, the contact 1 included in the contact 100 according to the present invention has a characteristic that the non-joining portion 3 is easily warped in order to satisfy Expression 1 as described above. The terminal plate of the movable contact is generally made thinner than the terminal plate of the fixed contact in order to facilitate movement. Therefore, when the contactor 100 is used as a movable contactor, the contact center part 3 ′ of the non-joining part 3 may also come into contact with the head of the contact point that is opposed to the contactor 100.

On the other hand, when the contact 100 is used as a fixed contact, the contact according to the present invention includes a terminal plate of a fixed contact that is usually thicker than a terminal plate of the movable contact. Therefore, when used for a switch, for example, at the time of energization opening and closing, only the end portion of the non-joining portion provided in the contact of the fixed contact can be more reliably brought into contact with the opposing contact.

Therefore, even if the contact 100 according to the present invention is a movable contact, the problem of the present invention can be solved. However, when the contact 100 is used as a fixed contact, the problem of the present invention is more reliably solved. Is preferable.

In the case where the contact 100 according to the present invention is a fixed contact, the polarity is not particularly limited, but only the end of the non-joined portion provided in the contact of the fixed contact is brought into contact with the opposing contact. And it is preferable that it is an anode.

The contact 100 according to the present invention can be manufactured by fixing the contact 1 to the terminal plate 4 by a method such as resistance welding. Even when contacts other than the contact 1 such as the contacts 1 a to 1e are used, the contact according to the present invention can be manufactured by the same method. The contact 1 can be manufactured by, for example, a method of cutting a wire obtained by rolling a composite material.

An example of a method for manufacturing the contact 1 shown in FIG. 1 will be described. First, after forming a rectangular composite wire having a rectangular cross section, the composite is rolled using a roll having a grooved surface, thereby obtaining a wire having a cross section as shown in FIG. Next, the contact 1 can be manufactured by cutting this wire with a press. After cutting, it becomes an individual piece as shown in FIG.

Moreover, the contact 1a shown in FIG. 4 and the contact 1b shown in FIG. 5 can be produced by header processing like the rivet-shaped contact as in

Patent Documents

1 and 2. In the contact 1b, a space 6 can be provided between the joint portion 2 and the non-joint portion 3 by providing a protrusion on the outer peripheral portion of the mold on the foot side.

The contacts 1c to 1e shown in FIGS. 6 to 8 can be produced by rolling on the surface using a roll provided with recesses for forming the

joints

2 and 2a to 2c in the figure at regular intervals. .

Further, by controlling the strength of the welding current when the contact 1 is fixed to the terminal plate 4 and / or the energizing time of the welding current, the contact 100 can satisfy the formula 1.

Resistance welding can use Joule heat generated during energization to melt the metal and fix it to the terminal board. The Joule heat at this time is determined by Joule's law (amount of heat Q = current I ² × resistance R × time t). However, since the resistance R varies depending on the material and shape of the contact and terminal plate, the welding conditions are not uniquely determined.

However, since the amount of heat for melting the metal can be adjusted by controlling the strength of the welding current and / or the energizing time of the welding current, the width d of the joint can be controlled. Since the maximum length L of the non-joined part can be calculated from (maximum width D of the non-joined part−width of the joined part d) / 2, control with the heat quantity Q is possible. In the case of FIG. 1, the thickness h of the non-joined part and the maximum length b of the joined part can be appropriately set by contact design.

Even when other contacts (for example, the contacts 1a to 1e shown in FIGS. 4 to 8) are used, the length L of the non-joining portion can be controlled by the heat quantity Q, and the thickness h of the non-joining portion and the maximum of the joining portion can be controlled. The length b can be appropriately dimensioned by contact design.

Considering the above, it is preferable to realize resistance welding that the current intensity is in the range of the upper limit of 10 kA and the lower limit of 1 kA, and the energization time is in the range of minimum 1 ms and maximum 100 ms.

<Electronic parts>
An electronic component according to the present invention includes a movable contact and a stationary contact that can contact and separate from each other as a contact, and either the movable contact or the fixed contact is a contact according to the present invention. is there. That is, in the contact provided in the electronic component according to the present invention, the non-joined portion of the contact provided on one side is more likely to warp than the other. Although it does not specifically limit as an electronic component, A switch, a relay, etc. can be mentioned.

By incorporating the contact according to the present invention into a switch, a relay, etc., the warpage of the non-joined part of the contact is intentionally generated without any special processing of the contact due to heat generated during energization opening and closing. Only the end of the part can be brought into contact with the head of the other contact.

This makes it possible to reduce the contact area between the contacts because the contact area has been widened due to contact wear, and thus the welding between the contacts can be suppressed. In other words, since the contact according to the present invention has improved electrical durability performance as compared with the conventional contact, the electronic component according to the present invention also has improved electrical durability performance. Note that the contact provided in the contact according to the present invention may be a twin contact.

The electronic component according to the present invention appropriately includes other members in addition to the movable contact and the fixed contact, such as an armature (iron piece), an iron core, a coil, a yoke, a terminal support material, a spring material, a case, and the like. It doesn't matter.

The electronic component according to the present invention can be manufactured by assembling a movable contact, a fixed contact, and other members according to a conventionally known method.

FIG. 9 is a schematic diagram showing the result of confirming the state of contact wear and warp by energizing and closing a switch using the contact according to the present invention and a switch using a conventional contact.

9 (a) to 9 (c), the contact 100 according to the present invention is used as a fixed contact (however, the terminal plate 4 is not shown), and a conventionally known rivet contact 7 is fixed to the terminal plate. The result of energizing and closing the switch 200 using the movable contact 101 (however, the terminal plate is not shown) is shown.

The terminal plate of the movable contact 101 can be elastically deformed. For example, when a current flows through a coil (not shown) and an iron core (not shown) is magnetized, an armature (not shown) is attracted to the iron core, so that the terminal plate of the movable contact 101 moves to the fixed contact 100 side and the rivet The contact 7 is brought into contact with the contact 1 included in the fixed contact 100. Since the terminal plate 4 of the fixed contact 100 does not deform even when a current flows through the coil, the position of the fixed contact 100 does not change.

9D to 9F show a stationary contact 102 in which a conventionally known rivet contact 7 is fixed to a terminal plate, and a movable contact in which a conventionally known rivet contact 7 is fixed to a terminal plate of a movable contact. It is a schematic diagram which shows the change of a contact shape at the time of energizing opening and closing the switch 300 using the child.

In FIG. 9 (a) to (f), the thick line indicates the contact surface between the movable contact and the fixed contact.

When the contact 100 according to the present invention is used as the fixed contact among the

contacts

100 and 101 constituting the switch 200, first, as shown in FIG. The warp occurs before the wear due to energization opening and closing, and the head of the rivet contact 7 is brought into contact only at the portion indicated by the bold line in FIG. After that, contact wear due to contact begins to occur from a portion indicated by a thick line in FIG. 9C, that is, a portion corresponding to an end portion of the non-joining portion 3. Since such a behavior is exhibited, the contact area between the contacts can be reduced, and welding between the opposing contacts can be made difficult to occur.

On the other hand, as shown in FIG. 9 (d), in the switch 300, when the rivet contact 7 of the stationary contact and the rivet contact 7 of the movable contact come into contact with each other, the contact is first consumed, and FIG. As shown, the contact area between the rivet contact 7 of the fixed contact and the rivet contact 7 of the movable contact increases, and the end of the rivet contact 7 of the fixed contact warps up. Therefore, as shown in FIG. 9 (f), the contact area further increases, so that a welding failure is likely to occur.

As described above, the case where the fixed contact is the contact according to the present invention has been described. However, since either the movable contact or the fixed contact may be the contact according to the present invention, the movable contact is the present invention. The contact may also be used.

In the electronic component according to the present invention, the maximum width of the non-joint portion provided in the contact point in the longitudinal section obtained by cutting the contact point by a surface perpendicular to the joint surface between the joint portion and the terminal plate provided in the contact point is according to the invention. It is preferable that the contact (contact B) that does not correspond to the contact is larger than the contact (contact A) according to the present invention.

The above longitudinal section is, for example, the surface shown in FIG. 1 (a), FIG. 4 (a), FIG. 5 (a), or FIG. “Maximum width of non-joined portion of the contact” (hereinafter simply referred to as the maximum width) means the width of the non-joined portion, that is, the lateral width of the non-joined portion in the longitudinal section, the length of a straight line parallel to the terminal plate The maximum value when measured.

For example, the length indicated as “2.0 mm” in FIG. 3 corresponds to the maximum width. In FIG. 1, the length indicated by “D” also corresponds to the maximum width. The maximum width can be measured using a conventionally known micrometer or the like.

As the contact B, for example, a conventionally known contact such as the contact 101 shown in FIG. For example, in the case of FIG. 9 (a), the non-joint portion of a conventionally known contactor is the head of the rivet contact 7 (the portion of the rivet contact 7 that faces the contact 1. FIG. 9 (a). Applicable part).

In the present specification, parameters relating to the shape of the contact, such as b, L, h, and the maximum width described above, are measured in the contact before being subjected to energization switching.

Since the maximum width of the contact B is larger than that of the contact A, only the non-joint end of the contact included in the contact A is brought into contact with the opposite contact more reliably during energization opening and closing. This is preferable.

The degree of difference in the size of the maximum width is not particularly limited, and even if the non-joining portion of the contact A warps in the direction of the contact B, the non-joining portion is not contacted with the contact B. It is sufficient that the maximum width is adjusted in the contact A and the contact B to such an extent that they do not come into contact with each other so that the contact is involved, or contact the terminal plate of the contact B.

In the electronic component according to the present invention, for example, as shown in FIG. 9A, the fixed contact is preferably the contact according to the present invention. Furthermore, the polarity of the stationary contact is preferably an anode.

The electronic component according to the present invention is the above-mentioned movable contact or fixed contact, and the contact (contact B) that does not correspond to the contact according to the present invention (contact A) is The α is preferably less than 1.5 (1 / mm).

In the electronic component according to the present invention, since either the movable contact or the fixed contact is the contact A, the other contact does not satisfy Formula 1. That is, in the contacts other than the contact A, α in Expression 1 is 1.87 (1 / mm) or less.

From the results of the examples, when α exceeds 1.87 (1 / mm), it is considered that the contact opening / closing frequency exceeds 100,000 times and exceeds the contact switching frequency when a conventional contact is used. In addition, when either the movable contact or the fixed contact is the contact A, as described above, the contact A is different from the conventionally known contact in terms of contact wear and contact warpage. Due to the different aspects, contact wear begins at the end of the non-joined portion of the contact and extends to the center of the contact after the end is consumed.

Therefore, the electronic component using the contact A has an advantage that not only the early welding failure can be avoided by increasing the number of switching times, but also the expensive silver alloy (contact material) can be used up. This can be achieved by using the contact A in which α exceeds 1.87 (1 / mm) as either the movable contact or the fixed contact.

Therefore, if the α of the contact B is 1.87 (1 / mm) or less, the contact provided in the contact B is clearly less likely to warp than the contact provided in the contact A. It is not necessary to be less than 5 (1 / mm).

However, when it is less than 1.5 (1 / mm), the contact provided in the contact B becomes even more difficult to warp when the cantilever is warped with reference to the above-mentioned JIS standard B2713. The time during which the contact area between the contacts can be reduced is also increased accordingly. Therefore, it can be said that it is more advantageous in preventing welding failure between the contacts.

FIG. 10 is a perspective view showing the structure of a switch 201 which is an electronic component according to the present invention. FIGS. 10A and 10B are viewed from different angles, and the configuration is the same.

The switch 201 is normally housed inside the case 202, and includes a fixed contact (contact) 1 and a fixed contact terminal plate (terminal plate) 4 according to the present invention. A rivet contact 7 which is a movable contact, a movable contact terminal plate (terminal plate) 4 ′, and a conventionally known movable contact 101 including an armature 10, a fixed b contact 12 and a fixed contact terminal plate (terminal plate) 4 are provided. A conventionally known fixed contact 106, an iron core 8, a base 9, and a fixed terminal support member 11 are provided. As the fixed contact (contact) 100, as shown in an enlarged view in FIG. 10A, the contact according to the first embodiment described above is used.

The fixed contact (contact) 100 and the fixed contact 106 are fixed to the base 9 and the fixed terminal support 11. In the movable contact 101, the movable contact (rivet contact) 7 comes into contact with the fixed contact (contact) 1 when the armature 10 is attracted to the magnetized core 8 by passing a current through a coil (not shown). When the current is interrupted, the movable contact (rivet contact) 7 is separated from the fixed contact (contact) 1. As a result, opening / closing control of the electric circuit can be performed.

And since the fixed contact (contact) 100 is a contact according to the present invention, the contact area between the movable contact (rivet contact) 7 and the fixed contact (contact) 1 can be reduced. As a result, as described above, the number of times of opening and closing can be dramatically improved, and expensive contact materials can be used up.

Note that the fixed b contact 12 provided in the fixed contact 106 is for contacting the movable contact (rivet contact) 7 when the iron core 8 is not magnetized, and the fixed contact 106 is conventionally known. Any contactor may be used, and it is not necessary to be a contactor according to the present invention.

The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention. Furthermore, a new technical feature can be formed by combining the technical means disclosed in each embodiment.

The present invention can also be configured as follows.

The contact according to the present invention is a contact comprising a contact and a terminal plate,
The contact includes a joining portion that joins the terminal plate, and a non-joining portion that does not participate in joining the terminal plate,
The thickness of the non-joined part is h,
B is the maximum length of the joint in the cross section in which the contact is cut by a plane parallel to the joint between the joint and the terminal plate;
When the maximum length of the non-joining portion in the cross section is L and (L / h) ³ / b is α, the following formula 1
α (1 / mm) = (L / h) ³ /b>1.87 (Formula 1)
It is characterized by satisfying.

According to the above configuration, with reference to the warpage of the cantilever beam stipulated in JIS B2713 (2009), (L / h) ³ / b, which is a factor depending on the shape of the contact, can be easily bent. It is an index of safety. By providing the contact with a shape that satisfies Formula 1, the contact is joined to the terminal plate at the joint, and the non-joined portion that is not joined to the terminal plate is likely to warp due to heat generated during energization switching.

Therefore, when the contact is used, for example, as a switch, the contact provided in the contact is warped only at the non-joined portion prior to contact consumption at the time of energization opening and closing, and the contact of the contact facing the contact The contact can be made only at the non-joint portion where the warp has occurred. That is, by intentionally warping the non-joined part by heat generated during energization opening / closing, only the end of the non-joined part of the contact can be brought into contact with the opposing contact. The above-mentioned “end portion at the non-joined portion of the contact” is as described above.

Therefore, since the contact area between the contacts can be reduced while maintaining the bonding strength between the bonding portion and the terminal plate, welding between the facing contacts can be made difficult to occur. That is, failure due to welding between the contacts can be reduced, the switching performance of the switch and the like can be improved, and the life of the contacts can be extended. Furthermore, since the wear occurs at the center of the contact after the end portion of the non-joined portion of the contact is consumed, the expensive silver material used for the contact can be used up.

In the contact according to the present invention, in the above formula 1, the α is preferably 2.25 (1 / mm) or more and 4.25 (1 / mm) or less.

According to the above configuration, the shape of the contact is more suitable for reducing the contact area between the contacts while maintaining the bonding strength between the bonding portion and the terminal plate, and can be opened and closed as shown in the embodiments described later. The number of times can be 130% or more compared to the conventional method.

Therefore, it is possible to further reduce the failure due to welding between the contacts and further improve the switching performance of the switch and the like.

The contact according to the present invention is preferably a fixed contact.

According to the above configuration, the contact according to the present invention is provided with the terminal plate of the stationary contact that is usually thicker than the terminal plate of the movable contact. Therefore, when the contact is used in, for example, a switch, only the end of the non-joined portion of the contact included in the fixed contact can be more reliably brought into contact with the opposing contact when energized.

Therefore, failures due to welding between contacts can be further reduced, and the opening / closing performance of switches and the like can be further improved.

In the contact according to the present invention, the polarity of the fixed contact is preferably an anode.

According to the above configuration, for example, when used in a switch, the stationary contact is more greatly affected by heat during energization opening and closing, and the opposing contacts are not affected by heat and do not warp. become. Therefore, it is possible to make sure that only the end portion of the non-joined portion of the contact included in the fixed contact is brought into contact with the opposing contact.

Therefore, failure due to welding between the contacts can be further reduced, and the opening / closing performance of the switch or the like can be improved more reliably.

The electronic component according to the present invention includes a movable contact and a stationary contact that can contact and separate from each other as the contact, and either the movable contact or the fixed contact is a contact according to the present invention. It is characterized by being.

According to the above configuration, one of the contactors that can contact and separate from each other is more likely to warp the end of the non-joined portion of the contact included in the contact than the other. Therefore, the contact provided in the one contactor can be warped only at the non-joining portion at the time of energization opening and closing, and can be brought into contact with the contact point of the contactor facing the contactor only at the non-joining portion causing the warp. .

Therefore, in the above one contact, the contact area between the contacts can be reduced while maintaining the bonding strength between the bonding portion and the terminal plate, so that welding between the opposed contacts can be made difficult to occur. That is, failures due to welding between contacts are reduced, switching performance is improved, and a long-life electronic component can be provided. Furthermore, since the wear occurs at the center of the contact after the end of the non-joined portion of the contact is consumed, the expensive silver material used for the contact can be used up.

In the electronic component according to the present invention, the maximum width of the non-joint portion provided in the contact point in the longitudinal section obtained by cutting the contact point by a surface perpendicular to the joint surface between the joint portion and the terminal plate provided in the contact point is according to the invention. It is preferable that the contact not corresponding to the contact is larger than the contact according to the present invention.

According to the above configuration, the maximum width of the contact according to the present invention (hereinafter also referred to as contact A) is larger than that of a contact not corresponding to the contact according to the present invention (hereinafter also referred to as contact B). Therefore, when the non-joining part of the contact provided in the contact A warps, the non-joining part comes into contact with the contact provided in the contact B or contacts the terminal plate of the contact B. There is no end.

That is, at the time of energization opening and closing, only the end portion of the non-joined portion of the contact provided in the contact A can be brought into contact with the opposing contact.

Therefore, it is possible to provide an electronic component in which failure due to welding between the contacts is further reduced and the switching performance is further improved.

In the electronic component according to the present invention, the fixed contact is preferably a contact according to the present invention.

According to the above configuration, since the contact according to the present invention is provided with the terminal plate of the stationary contact that is usually thicker than the terminal plate of the movable contact, more reliably at the time of energization opening and closing, Only the end of the non-joining portion provided in the contact of the fixed contact can be brought into contact with the opposing contact.

In the electronic component according to the present invention, the polarity of the stationary contact is preferably an anode.

According to the above configuration, the stationary contact is more greatly affected by heat during energization opening and closing, and the opposing contact is not affected by heat, so it does not warp. Therefore, it is possible to make sure that only the end portion of the non-joining portion included in the contact of the fixed contact is brought into contact with the opposing contact.

Therefore, it is possible to provide an electronic component in which failure due to welding between contacts is further reduced and the opening / closing performance of a switch or the like is improved more reliably.

In the electronic component according to the present invention, the contact that does not correspond to the contact according to the present invention out of the movable contact or the fixed contact, the α in the formula 1 is 1.5 (1 / mm ) Is preferable.

When the α is less than 1.5 (1 / mm), it means that the contact is difficult to bend (not easily warped) when the concept of warping of the cantilever is applied. In the contact according to the present invention, α is larger than 1.87 (1 / mm) or 2.25 (1 / mm) or more and 4.25 (1 / mm) or less.

Therefore, according to the said structure, the non-joining part with which the contact of the contact concerning this invention is equipped warps and contacts with the contact with which the other contact which is hard to warp is provided.

Therefore, since the contact area between the contacts can be reduced, welding between the opposing contacts can be made difficult to occur. As a result, it is possible to provide an electronic component in which failure due to welding between the contacts is reduced and switching performance is improved.

Examples of the present invention will be described below, but the present invention is not limited to these examples unless departing from the spirit of the present invention.

[Production Examples 1 to 6]
A wire material obtained by rolling a composite material using a silver alloy containing 10.5 weight percent of a metal oxide as a contact material is cut, and the thickness h of the non-joining part 3 is 0.36 mm as shown in FIG. A rectangular contact 1 having a maximum width D of 3 of 2.0 mm was produced.

Next, the joint 2 of the contact 1 was joined to the terminal plate 4 (tough pitch copper C1100 or iron-filled copper C19400) by resistance welding. As shown in FIG. 1, the non-joined portion 3 of the contact 1 used has a square cross-sectional shape in a cross section obtained by cutting the contact 1 with a plane parallel to the joint surface 5 between the joint 2 and the terminal plate 4. is there. Therefore, the maximum length b of the joint portion 2 in the cross section is equal to the maximum width D of the non-joint portion 3 and is constant at 2.0 mm.

When performing the above-described joining, the width (d in FIG. 1) of the joining portion 2 is changed in six ways by controlling the strength of the welding current, the energizing time, etc., and the contacts a to f according to the present invention are changed. Produced. At this time, the maximum length L of the non-joining portion 3 also changes as the width of the joining portion 2 changes. The welding conditions are shown in Table 1.

[Comparative Production Examples 1 to 3]
In the same manner as in Production Examples 1 to 6, except that the width d of the joint at the time of joining is controlled to the welding current strength, the energization time, etc., so that the width is different from that of Production Examples 1 to 6. Comparative contacts a to c were prepared.

[Comparative Production Examples 4 to 6]
In place of the contact 1 used in the manufacturing examples 1 to 6, conventionally known rivet contacts having three different head diameters and foot diameters are used, and fixed to the terminal plate 4 by header processing, and the comparative contacts df Got. The head diameter corresponds to the maximum width of the non-joining portion 3 of the contact 1, and the foot diameter corresponds to the maximum length b of the joining portion 2. If the contact shown in FIG. 4 is assumed to be a rivet contact, the head diameter corresponds to D in the figure, and the foot diameter corresponds to b in the figure. In addition, b shown in Table 1 is a foot diameter after being fixed to the terminal board 4.

[Examples 1 to 6, Comparative Examples 1 to 6]
Table 1 summarizes the parameters related to the contact shapes of the contacts a to f and the comparative contacts a to f. These contacts were used as fixed contacts, and a switch was configured using a conventionally known movable contact as the movable contact. Similar to the contact 1, the movable contact uses a silver alloy containing 10.5 weight percent of a metal oxide as a contact material, has a contact head diameter of 2.3 mm, and uses a beryllium copper C17200 as a terminal plate. Is used.

The load conditions were DC14V, 28A, resistance load, and the number of times the contacts could be opened and closed until welding or contact failure occurred between the contacts was measured. The results are shown in Table 1.

In Table 1, with respect to the comparative contact, for example, the comparative contact a is represented as “ratio a”. Further, the maximum length L of the non-joined portion is obtained as (Dd) / 2. In the comparative contacts d to f, the “maximum width D of the non-joined portion” in the table corresponds to the head diameter, and the “maximum length b of the joined portion” corresponds to the foot diameter. Assuming that the contact shown in FIG. 4 is a rivet contact, “the maximum length L of the non-joined portion” in the table corresponds to L shown in FIG. 4, and “thickness h of the non-joint portion” corresponds to h shown in FIG. To do.

FIG. 11 is a graph created for the contacts a to f and the comparative contacts a to f based on the test results by taking α obtained from Equation 1 on the horizontal axis and the number of times of opening and closing on the vertical axis. In FIG. 11, one plot is set to 0.25 (1 / mm), and all the results in each section are averaged and plotted at equal intervals.

From the results shown in FIG. 11, by making α configured by the thickness h of the non-joined portion, the maximum length L of the non-joined portion, and the maximum length b of the joined portion greater than 1.87 (1 / mm), It turns out that the switching performance exceeding 100,000 times that is a general number of times of opening and closing of the conventional contacts can be realized. Moreover, not only that, but by using the contact according to the present invention, as described above, it is possible to use up all of the expensive silver alloy as the material of the contact.

In particular, when α is set to 2.25 (1 / mm) or more and 4.25 (1 / mm) or less, the number of times of opening and closing can be increased by 130% or more with respect to the above 100,000 times. In other words, the occurrence of welding failure was sufficiently suppressed, and the contact life could be remarkably improved.

Furthermore, the larger the value of α, the shorter the width d of the joint portion. However, even if α is 4.25 (1 / mm), the contacts a to f can ensure a shear strength of 150 N or more. ing. That is, the problem that the contact is dropped from the contact does not occur. The shear strength was measured in accordance with the shear strength test shown in JIS C62137-1-2: 2010.

From the above results, by using the contact according to the present invention, the contact area between the contacts can be reduced, and as a result, the number of times the contacts can be opened and closed can be remarkably increased, and the problem of contact dropout does not occur. And it became clear that the effect which was not able to be obtained with the conventional contact that the silver alloy could be used up effectively was show | played.

The present invention can be suitably used for electronic parts such as switches and relays.

DESCRIPTION OF

SYMBOLS

1, 1a-1e ... Contact 2 ... Contact junction 3 ... Contact non-joint part 4 ... Terminal board 5 ... Joining surface 100 ... Contact 200 ... Switch 201 ... Switches (switches)

Claims

A contact comprising a contact and a terminal plate,
The contact includes a joining portion that joins the terminal plate, and a non-joining portion that does not participate in joining the terminal plate,
The thickness of the non-joined part is h,
B is the maximum length of the joint in the cross section in which the contact is cut by a plane parallel to the joint between the joint and the terminal plate;
When the maximum length of the non-joining portion in the cross section is L and (L / h) 3 / b is α, the following formula 1
α (1 / mm) = (L / h) 3 /b>1.87 (Formula 1)
The contact characterized by satisfy | filling.
2. The contactor according to claim 1, wherein in the formula 1, the α is 2.25 (1 / mm) or more and 4.25 (1 / mm) or less.
The contactor according to claim 1 or 2, wherein the contactor is a fixed contactor.
The contact according to claim 3, wherein the polarity of the fixed contact is an anode.
As a contactor, it is equipped with a movable contactor and a fixed contactor that can contact and separate from each other,
3. The electronic component according to claim 1, wherein either the movable contact or the fixed contact is the contact according to claim 1 or 2.
The maximum width of the non-joint part provided in the contact point in the longitudinal section obtained by cutting the contact point by a surface perpendicular to the joint surface between the joint part and the terminal plate provided in the contact point,
The electronic component according to claim 5, wherein a contact that does not correspond to the contact according to claim 1 or 2 is larger than the contact according to claim 1 or 2.
The electronic component according to claim 5 or 6, wherein the fixed contact is the contact according to claim 1 or 2.
The electronic component according to claim 7, wherein the polarity of the stationary contact is an anode.
Of the movable contact or the fixed contact, the contact that does not correspond to the contact according to claim 1 or 2 is such that in the formula 1, the α is less than 1.5 (1 / mm). The electronic component according to claim 5, wherein the electronic component is an electronic component.