JP6911959B2

JP6911959B2 - Electronic devices using switches

Info

Publication number: JP6911959B2
Application number: JP2020047066A
Authority: JP
Inventors: 国雄野口; 大輔中田
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2018-10-25
Filing date: 2020-03-18
Publication date: 2021-07-28
Anticipated expiration: 2034-04-14
Also published as: JP2020098805A

Description

本発明は、入力操作部に用いられるスイッチを用いた電子機器に関するものである。 The present invention relates to an electronic device using a switch used in an input operation unit.

近年、各種電子機器は、小型薄型化並びに軽量化が留まることなく進んでおり、その入力操作部に用いられるスイッチについても小型薄型化されたものへの強い要望がある。 In recent years, various electronic devices have been steadily becoming smaller and thinner and lighter, and there is a strong demand for smaller and thinner switches used for their input operation units.

このような従来のスイッチについて、図面を用いて説明する。 Such a conventional switch will be described with reference to the drawings.

図５は従来のスイッチの配線基板への配置状態を示す断面図、図６は同上面図、図７は同正面図、図８は従来のスイッチの下面図である。なお、図面については、半田の図示を省略した見易い図示状態のものとしている。 5 is a cross-sectional view showing a state in which the conventional switch is arranged on the wiring board, FIG. 6 is a top view of the conventional switch, FIG. 7 is a front view of the switch, and FIG. 8 is a bottom view of the conventional switch. It should be noted that the drawings are in an easy-to-read state in which the illustration of the solder is omitted.

従来のスイッチは、樹脂製のケース１内にスイッチ接点部を備えた所謂プッシュスイッチとして構成されている。 The conventional switch is configured as a so-called push switch having a switch contact portion in a resin case 1.

ケース１は、図５および図６に示すように、上方が開口した凹部を有する上面視矩形状に形成されている。凹部の開口部は、図６に点線で示したように、上面視で長円形に形成され、この凹部内にスイッチ接点部が構成されている。 As shown in FIGS. 5 and 6, the case 1 is formed in a rectangular shape in a top view having a concave portion with an opening at the upper side. As shown by the dotted line in FIG. 6, the opening of the recess is formed in an oval shape when viewed from above, and the switch contact portion is formed in the recess.

スイッチ接点部は、図５に示すように、第１固定接点１０、第２固定接点２０、可動接点３０によって構成されている。すなわち、ケース１の凹部底面の中央位置に第１固定接点１０が配され、また凹部底面の外周位置に第２固定接点２０が配されている。そして、上方凸形のドーム状に形成された可動接点３０が、その外周下端を第２固定接点２０上に当接させて凹部内に配されている。可動接点３０の中央下面は第１固定接点１０に間隔をあけて対峙している。 As shown in FIG. 5, the switch contact portion is composed of a first fixed contact 10, a second fixed contact 20, and a movable contact 30. That is, the first fixed contact 10 is arranged at the center position of the bottom surface of the recess of the case 1, and the second fixed contact 20 is arranged at the outer peripheral position of the bottom surface of the recess. A movable contact 30 formed in an upward convex dome shape is arranged in the concave portion with its outer peripheral lower end abutting on the second fixed contact 20. The lower center of the movable contact 30 faces the first fixed contact 10 at intervals.

そして、ケース１は、長手方向の一方側の端部下端から二つの第１端子１５が導出され、また長手方向の他方側の端部下端から二つの第２端子２６が導出されている。二つの第１端子１５は第１固定接点１０に繋がり、二つの第２端子２６は第２固定接点２０に繋がっている。 In the case 1, two first terminals 15 are led out from the lower end of one end in the longitudinal direction, and two second terminals 26 are led out from the lower end of the other end in the longitudinal direction. The two first terminals 15 are connected to the first fixed contact 10, and the two second terminals 26 are connected to the second fixed contact 20.

ケース１の側壁上端面に保護シート４０が貼着され、凹部上が保護シート４０で覆われて従来のスイッチは構成されている。 A protective sheet 40 is attached to the upper end surface of the side wall of the case 1, and the concave portion is covered with the protective sheet 40 to form a conventional switch.

ここで、図７および８を用いて、ケース１の底部の下面形状ならびに第１端子１５、第２端子２６の導出箇所などについて説明する。 Here, with reference to FIGS. 7 and 8, the shape of the lower surface of the bottom portion of the case 1 and the derivation points of the first terminal 15 and the second terminal 26 will be described.

ケース１の底部の下面は、図７および８に示すように、略矩形状で平坦面に形成された中央位置の第１平面部３と、第１平面部３に対して長手方向の両側に隣り合って設けられ、第１平面部３よりも僅かに高い位置で平坦面に形成された第２平面部５とを有したものとなっている。つまり、ケース１の下面は、長手方向の右から左にかけて、一方の第２平面部５、第１平面部３、他方の第２平面部５の順で並んで構成され、その高さ位置は、互いの境の位置で段差を有したものとなっている。なお、一方の第２平面部５と他方の第２平面部５とは同じ高さ位置に設定されている。 As shown in FIGS. 7 and 8, the lower surface of the bottom portion of the case 1 is formed on a substantially rectangular flat surface and is formed on both sides in the longitudinal direction with respect to the first plane portion 3 at the center position and the first plane portion 3. It is provided adjacent to each other and has a second flat surface portion 5 formed on a flat surface at a position slightly higher than the first flat surface portion 3. That is, the lower surface of the case 1 is configured by arranging one second plane portion 5, the first plane portion 3, and the other second plane portion 5 in this order from right to left in the longitudinal direction, and the height position thereof is , There is a step at the position of the boundary between each other. The second flat surface portion 5 on one side and the second flat surface portion 5 on the other side are set at the same height position.

二つの第１端子１５は一方の第２平面部５から導出され、二つの第２端子２６は他方の第２平面部５から導出されている。ここに、それぞれの第１端子１５、第２端子２６は、対応する第２平面部５と同一の高さで表出した表出箇所（図６および図８参照）を有し、その高さ位置で水平に外方に突出している。この表出箇所は、スイッチの小型化に応じて半田付け面積を確保するために設けられている。 The two first terminals 15 are derived from one second plane portion 5, and the two second terminals 26 are derived from the other second plane portion 5. Here, each of the first terminal 15 and the second terminal 26 has an exposed portion (see FIGS. 6 and 8) expressed at the same height as the corresponding second flat surface portion 5, and the height thereof. It projects horizontally outward at the position. This exposed portion is provided to secure a soldering area according to the miniaturization of the switch.

当該スイッチは、第１端子１５、第２端子２６が配線基板５０に設けられたランド部５２、５４に半田付けされて実装される。つまり、その実装時には、それぞれのランド部５２、５４にクリーム半田が塗布され、その上に対応する第１端子１５、第２端子２６が位置するように当該スイッチが配線基板５０上に配される。その後、リフロー工程を介して第１端子１５、第２端子２６がランド部５２、５４に半田付け固定されて表面実装される。 The switch is mounted by soldering the first terminal 15 and the second terminal 26 to the land portions 52 and 54 provided on the wiring board 50. That is, at the time of mounting, cream solder is applied to the respective land portions 52 and 54, and the switch is arranged on the wiring board 50 so that the corresponding first terminal 15 and second terminal 26 are located on the land portions 52 and 54, respectively. .. After that, the first terminal 15 and the second terminal 26 are soldered and fixed to the land portions 52 and 54 via a reflow process and surface-mounted.

なお、その実装状態において、当該スイッチは、第１端子１５、第２端子２６を導出している第２平面部５が第１平面部３よりも高い位置に設定されているため、その高低差分で半田の高さ寸法を吸収して、ケース１の第１平面部３が配線基板５０上に当接もしくは近接する状態で実装可能なものになっている。これにより、当該スイッチは、スイッチ接点部への押し下げ操作時に過剰な押圧力が加わっても、その押圧力を配線基板５０で受けられる状態に実装可能なものになっている。 In the mounted state, the switch has a height difference because the second plane portion 5 leading out the first terminal 15 and the second terminal 26 is set at a higher position than the first plane portion 3. By absorbing the height dimension of the solder, the first flat surface portion 3 of the case 1 can be mounted in a state of being in contact with or close to the wiring board 50. As a result, the switch can be mounted in a state in which the wiring board 50 can receive the pressing force even if an excessive pressing force is applied during the pressing operation to the switch contact portion.

そして、当該スイッチは小型化が進むにつれて、第１端子１５同士の間隔および第２端子２６同士の間隔が小さくなり、かつランド部５２、５４としては通常矩形状に設定されて形成されることから、一方の第２平面部５と第１平面部３との境、および、他方の第２平面部５と第１平面部３との境は、いずれも第１端子１５、第２端子２６のそれぞれの突出方向に対して直交する直線状の段差部を有するものに構成せざるを得なかった。 As the miniaturization of the switch progresses, the distance between the first terminals 15 and the distance between the second terminals 26 becomes smaller, and the land portions 52 and 54 are usually formed in a rectangular shape. , The boundary between one second plane portion 5 and the first plane portion 3 and the boundary between the other second plane portion 5 and the first plane portion 3 are both of the first terminal 15 and the second terminal 26. It had to be configured to have a linear stepped portion orthogonal to each protruding direction.

なお、この出願の発明に関連する先行技術文献情報としては、例えば、特許文献１が知られている。 As the prior art document information related to the invention of this application, for example, Patent Document 1 is known.

特開２００４−１７１７８９号公報Japanese Unexamined Patent Publication No. 2004-171789

しかしながら、従来のスイッチにおいては、リフロー時において、例えばケース１の長手方向に沿う方向、つまり、一方の第２平面部５、第１平面部３、他方の第２平面部５の順になるようにリフロー炉内に流されていくと、個々の第２平面部５でのクリーム半田の溶融タイミングがずれる場合がある。 However, in the conventional switch, at the time of reflow, for example, in the direction along the longitudinal direction of the case 1, that is, in the order of one second plane portion 5, the first plane portion 3, and the other second plane portion 5. When it is poured into the reflow furnace, the melting timing of the cream solder on each second flat surface portion 5 may shift.

例えば、一方の第２平面部５側のクリーム半田が先に溶融した場合、対応する第１端子１５同士が溶融した半田によって下方に引き寄せられて、スイッチ自身に回転する力が加わる。つまり、一方の第２平面部５と第１平面部３との間の直線状の段差部を支点として、スイッチ自身が長手方向側で傾く現象が生じて、他方の第２平面部５側の第２端子２６の浮きが発生する可能性があった。 For example, when the cream solder on the second flat surface portion 5 side is melted first, the corresponding first terminals 15 are attracted downward by the melted solder, and a rotating force is applied to the switch itself. That is, a phenomenon occurs in which the switch itself tilts in the longitudinal direction with the linear step portion between the second plane portion 5 and the first plane portion 3 as a fulcrum, and the other second plane portion 5 side. There was a possibility that the second terminal 26 would float.

本発明は、このような従来の課題を解決するものであり、リフロー半田付け時に、傾いて実装されることが低減できるスイッチを提供することを目的とする。 The present invention solves such a conventional problem, and an object of the present invention is to provide a switch that can reduce tilting and mounting during reflow soldering.

上記目的を達成するために本発明は、ケースとして、底部の下面が、第一平面部と、第１平面部に隣り合い第１平面部よりも高い位置に設定されて設けられ、端子の内の少なくとも一つが導出された第２平面部とを有し、その第２平面部に、下方に向かって突出する突出部を設けたものを用いてスイッチを構成するものである。 In order to achieve the above object, in the present invention, as a case, the lower surface of the bottom portion is provided adjacent to the first plane portion and the first plane portion at a position higher than the first plane portion, and is provided in the terminal. The switch is configured by having at least one of the above-described second plane portions and providing the second plane portion with a protruding portion protruding downward.

これであれば、配線基板へのリフロー半田付け時に、第２平面部側でクリーム半田が溶融して対応する端子が下方に引き寄せられる現象が生じたとしても、第２平面部に設けた突出部が配線基板上に当接して当該スイッチ自身に加わる回転する力が規制でき、スイッチが、傾いて実装されることを抑制することができるという作用を有する。 In this case, even if the cream solder melts on the second flat surface side and the corresponding terminal is attracted downward during reflow soldering to the wiring board, the protruding portion provided on the second flat surface portion. Can regulate the rotational force applied to the switch itself when it comes into contact with the wiring board, and has the effect of suppressing the switch from being mounted at an angle.

本発明によれば、リフロー半田付け時に、傾いて実装されることが低減できるスイッチを得ることができるという有利な効果が得られる。 According to the present invention, it is possible to obtain an advantageous effect that a switch that can reduce tilting mounting during reflow soldering can be obtained.

本発明の実施形態によるスイッチの配線基板への配置状態を示す断面図Sectional drawing which shows the arrangement state of the switch on the wiring board by embodiment of this invention. 同正面図Same front view 本発明の実施形態によるスイッチの下面図Bottom view of the switch according to the embodiment of the present invention 同変形例の構成としたスイッチの下面図Bottom view of the switch with the same modified example configuration 従来のスイッチの配線基板への配置状態を示す断面図Cross-sectional view showing the arrangement state of the conventional switch on the wiring board 同上面図Top view 同正面図Same front view 従来のスイッチの下面図Bottom view of a conventional switch

以下、本発明の実施の形態について、図１〜図４を用いて説明する。なお、従来と同一構成の部分には同一符号を付して詳細説明は省略する。 Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 4. The parts having the same configuration as the conventional ones are designated by the same reference numerals, and detailed description thereof will be omitted.

（実施の形態）
図１は本発明の実施形態によるスイッチの配線基板への配置状態を示す断面図、図２は同正面図、図３は本発明の実施形態によるスイッチの下面図、図４は同変形例の構成としたスイッチの下面図である。なお、図面については、半田の図示を省略した見易い図示状態のものとしている。 (Embodiment)
FIG. 1 is a cross-sectional view showing a state in which a switch is arranged on a wiring board according to an embodiment of the present invention, FIG. 2 is a front view of the switch, FIG. 3 is a bottom view of a switch according to an embodiment of the present invention, and FIG. It is a bottom view of the configured switch. It should be noted that the drawings are in an easy-to-read state in which the illustration of the solder is omitted.

当該実施形態によるスイッチは、従来同様に、樹脂製のケース６１内にスイッチ接点部を備えた所謂プッシュスイッチに構成されている。 The switch according to the embodiment is configured as a so-called push switch having a switch contact portion in a resin case 61 as in the conventional case.

ケース６１は、上面視矩形状で上方開口の凹部を有したものであり、その凹部内にスイッチ接点部が構成されている。凹部の開口部は、従来同様に上面視で長円形に形成されている。 The case 61 has a rectangular shape when viewed from above and has a recess having an upper opening, and a switch contact portion is formed in the recess. The opening of the recess is formed in an oval shape when viewed from above as in the conventional case.

スイッチ接点部は、従来のものと同様に、第１固定接点１０、第２固定接点２０、可動接点３０によって構成されている。つまり、ケース６１の凹部底面の中央位置に第１固定接点１０が配され、凹部底面の外周位置に第２固定接点２０が配されている。そして、上方凸形のドーム状に形成された可動接点３０が、その外周下端を第２固定接点２０上に当接させて凹部内に配されている。可動接点３０の中央下面は第１固定接点１０に間隔をあけて対峙している。 The switch contact portion is composed of a first fixed contact 10, a second fixed contact 20, and a movable contact 30, as in the conventional one. That is, the first fixed contact 10 is arranged at the center position of the bottom surface of the recess of the case 61, and the second fixed contact 20 is arranged at the outer peripheral position of the bottom surface of the recess. A movable contact 30 formed in an upward convex dome shape is arranged in the concave portion with its outer peripheral lower end abutting on the second fixed contact 20. The lower center of the movable contact 30 faces the first fixed contact 10 at intervals.

そして、第１固定接点１０に繋がる二つの第１端子１５が、ケース６１の長手方向の一方側の端部下端から導出されている。第２固定接点２０に繋がる二つの第２端子２６が、ケース６１の長手方向の他方側の端部下端から導出されている。 Then, two first terminals 15 connected to the first fixed contact 10 are led out from the lower end of one end in the longitudinal direction of the case 61. Two second terminals 26 connected to the second fixed contact 20 are led out from the lower end of the other end of the case 61 in the longitudinal direction.

ケース６１の側壁上端面には保護シート４０が貼着されており、凹部上は保護シート４０で覆われている。 A protective sheet 40 is attached to the upper end surface of the side wall of the case 61, and the concave portion is covered with the protective sheet 40.

ここに、当該実施形態によるスイッチは、ケース６１の底部における下面構成を従来品とは相違したものとし、それによって配線基板への実装時に、傾いた状態で実装されることを低減させており、以下にその説明をする。 Here, the switch according to the embodiment has a lower surface configuration at the bottom of the case 61 different from that of the conventional product, thereby reducing the fact that the switch is mounted in an inclined state when mounted on the wiring board. The explanation will be given below.

図１や図３に示したように、ケース６１の底部の下面は、略矩形状で平坦面に形成された中央位置の第１平面部６３と、第１平面部６３に対して長手方向の両側に隣り合って設けられ、第１平面部６３よりも僅かに高い位置で平坦面に形成された第２平面部６５を有することは従来と同じである。 As shown in FIGS. 1 and 3, the lower surface of the bottom portion of the case 61 has a substantially rectangular shape and is formed on a flat surface in the central position of the first flat surface portion 63 and the first flat surface portion 63 in the longitudinal direction. It is the same as the conventional case that the second flat surface portion 65 is provided adjacent to each other on both sides and is formed on a flat surface at a position slightly higher than the first flat surface portion 63.

つまり、ケース６１の下面は、従来同様に、長手方向の右から左にかけて、一方の第２平面部６５、第１平面部６３、他方の第２平面部６５の順で並んで構成され、同じ高さ位置に設定されている二つの第２平面部６５の各々と第１平面部６３との境の位置は、それぞれ直線状の段差部を有したものとなっている。 That is, the lower surface of the case 61 is configured by arranging one second plane portion 65, the first plane portion 63, and the other second plane portion 65 in this order from right to left in the longitudinal direction as in the conventional case. The position of the boundary between each of the two second plane portions 65 set at the height position and the first plane portion 63 has a linear stepped portion.

そして、二つの第１端子１５が一方の第２平面部６５から導出され、二つの第２端子２６が他方の第２平面部６５から導出されている点や、それぞれの第１端子１５および第２端子２６は、対応する第２平面部６５と同一の高さで表出した表出箇所（図３参照）を有し、その高さ位置で水平に外方に突出している点は従来のものと同じである。なお、それぞれの第１端子１５および第２端子２６は、上述した表出箇所を含めて各々半田付け可能になっている。 Then, the points where the two first terminals 15 are derived from one second plane portion 65 and the two second terminals 26 are derived from the other second plane portion 65, and the first terminal 15 and the first terminal, respectively. The two terminals 26 have an exposed portion (see FIG. 3) that is exposed at the same height as the corresponding second flat surface portion 65, and the point that the two terminals 26 project horizontally outward at that height position is conventional. It's the same as the one. The first terminal 15 and the second terminal 26 can be soldered to each other including the above-mentioned exposed parts.

ここに、当該実施形態によるものでは、ケース６１の第２平面部６５毎に、水平断面が円形で下方に向かって突出した突出部７１を二つずつケース６１に一体に設けた点が従来のものと異なる。 Here, according to the embodiment, the conventional point is that the case 61 is integrally provided with two projecting portions 71 having a circular horizontal cross section and protruding downward for each second flat surface portion 65 of the case 61. Different from the one.

各々の突出部７１は、先端が球面状で、先端の高さ位置がケース６１の第１平面部６３と同一高さ位置、もしくはそれよりも僅かに高い位置、つまり前記第１平面部６３よりも突出していない高さ位置に設定されている。 The tip of each protrusion 71 is spherical, and the height position of the tip is the same as or slightly higher than the first plane portion 63 of the case 61, that is, from the first plane portion 63. Is set at a height position that does not protrude.

そして、突出部７１の設置位置としては、ケース６１の外縁部近傍の四隅に一つずつ対応させて設けたものとしている。つまり、各々の突出部７１は、図３に示すように、点線で図示された二つの第１端子１５に応じた二つのランド部５２と、二つの第２端子２６に応じた二つのランド部５４に対して、短手側での外方位置に配されている。さらに、各々の突出部７１は、第１端子１５、第２端子２６のそれぞれの第２平面部６５からの表出箇所に隣接する位置に設定して設けられている。 The protrusions 71 are installed one by one at the four corners near the outer edge of the case 61. That is, as shown in FIG. 3, each of the protruding portions 71 has two land portions 52 corresponding to the two first terminals 15 shown by the dotted lines and two land portions corresponding to the two second terminals 26. It is arranged at the outer position on the short side with respect to 54. Further, each of the projecting portions 71 is set at a position adjacent to a position where the first terminal 15 and the second terminal 26 are exposed from the second flat surface portion 65, respectively.

言い換えると、四つの突出部７１は、スイッチの中心位置からみてケース６１の長手方向に対して二つ同士が対称となる位置関係で、短手方向に対しても二つ同士が対称となる位置関係で設けられている。そして、二つの第１端子１５は、一方の第２平面部６５に設けられた二つの突出部７１の間の位置から導出されている。二つの第２端子２６は、他方の第２平面部６５に設けた二つの突出部７１の間の位置から導出されている。 In other words, the four protrusions 71 have a positional relationship in which the two are symmetrical with respect to the longitudinal direction of the case 61 when viewed from the center position of the switch, and the two are symmetrical with respect to the lateral direction. It is provided in relation. Then, the two first terminals 15 are derived from the positions between the two protruding portions 71 provided on one of the second plane portions 65. The two second terminals 26 are derived from the positions between the two protrusions 71 provided on the other second flat surface portion 65.

なお、突出部７１の設置箇所は特に限定はされないが、ケース６１の外縁部近傍に設置すると望ましく、特にケース６１の四隅であると面積的に設置し易いこと等もあり好ましい。 The location where the protrusion 71 is installed is not particularly limited, but it is desirable to install the protrusion 71 near the outer edge of the case 61, and it is particularly preferable to install the protrusion 71 at the four corners of the case 61 because it is easy to install in terms of area.

当該実施形態によるスイッチは、以上のように構成されている。その動作は、保護シート４０を介して可動接点３０の中央部位置を下方に押圧操作すると、可動接点３０が反転動作する。それによって、可動接点３０の下面が第１固定接点１０に接触して、スイッチ接点部がオン状態になり、第１端子１５、第２端子２６間が導通状態になる。その操作を解除すると、可動接点３０は自身の復元力で元の上方凸形のドーム状に復元して、図１に示したスイッチ接点部のオフ状態に戻る。 The switch according to the embodiment is configured as described above. In that operation, when the central position of the movable contact 30 is pressed downward via the protective sheet 40, the movable contact 30 reverses. As a result, the lower surface of the movable contact 30 comes into contact with the first fixed contact 10, the switch contact portion is turned on, and the first terminal 15 and the second terminal 26 are in a conductive state. When the operation is released, the movable contact 30 is restored to the original upward convex dome shape by its own restoring force, and returns to the off state of the switch contact portion shown in FIG.

そして、当該実施形態によるスイッチは、第１端子１５、第２端子２６が配線基板５０に設けられたランド部５２、５４に従来同様に半田付けされて表面実装される。 Then, the switch according to the embodiment is surface-mounted by soldering the first terminal 15 and the second terminal 26 to the land portions 52 and 54 provided on the wiring board 50 as in the conventional case.

その実装時には、それぞれのランド部５２、５４にクリーム半田が塗布され、その上に対応する第１端子１５、第２端子２６が位置するように当該スイッチが配線基板５０上に配されて、リフロー工程を介して第１端子１５、第２端子２６がランド部５２、５４に半田付け固定されて実装される。 At the time of mounting, cream solder is applied to the respective land portions 52 and 54, and the switch is arranged on the wiring board 50 so that the corresponding first terminal 15 and second terminal 26 are located on the land portions 52 and 54, and reflow. Through the process, the first terminal 15 and the second terminal 26 are soldered and fixed to the land portions 52 and 54 for mounting.

ここに、当該実施形態によるスイッチは、ランド部５２、５４にクリーム半田が塗布された配線基板５０上に配された際に、ケース６１の第１平面部６３と、各々の第２平面部６５に設けられた突出部７１の先端が、配線基板５０の上面に対して近接もしくは当接した状態になる。 Here, when the switches according to the embodiment are arranged on the wiring board 50 on which the land portions 52 and 54 are coated with cream solder, the first plane portion 63 of the case 61 and the second plane portion 65 of each are arranged. The tip of the protruding portion 71 provided on the wiring board 50 is in a state of being close to or in contact with the upper surface of the wiring board 50.

続いて、リフロー炉内に流されて個々の第２平面部６５でクリーム半田の溶融タイミングがずれる等しても、当該実施形態によるスイッチは、従来品よりも長手方向側でスイッチ自身が傾く現象が低減される。 Subsequently, even if the cream solder is poured into the reflow furnace and the melting timing of the cream solder is deviated at each of the second plane portions 65, the switch according to the embodiment has a phenomenon in which the switch itself is tilted in the longitudinal direction side as compared with the conventional product. Is reduced.

つまり、例えば、一方の第２平面部６５側のクリーム半田が先に溶融した場合、その溶融した半田によって、対応する第１端子１５同士が下方に引き寄せられることで、第１端子１５側が下がるようにケース６１が少し傾くと、ケース６１の一方の第２平面部６５側に設けた二つの突出部７１の先端が真っ先に配線基板５０上に当接することとなる。 That is, for example, when the cream solder on the second flat surface portion 65 side is melted first, the melted solder pulls the corresponding first terminals 15 downward, so that the first terminal 15 side is lowered. When the case 61 is slightly tilted, the tips of the two projecting portions 71 provided on the second flat surface portion 65 side of the case 61 come into contact with the wiring board 50 first.

そして、その二つの突出部７１の先端が配線基板５０上に当接する位置は、第１端子１５の近傍位置になる設定のものに構成されているため、第１端子１５側が下がる距離が従来品よりも小さく抑えられる。これにより、長手方向側に傾くようにスイッチ自身に加わる回転する力が規制でき、スイッチ自身の傾きを低減させることができる。 Since the positions where the tips of the two protruding portions 71 abut on the wiring board 50 are set to be close to the first terminal 15, the distance that the first terminal 15 side is lowered is the conventional product. Can be kept smaller than. As a result, the rotational force applied to the switch itself so as to tilt in the longitudinal direction can be regulated, and the tilt of the switch itself can be reduced.

なお、ランド部５２、５４の半田の溶融状態や第１平面部６３の形状設定などによってはケース６１の短手方向側などへのスイッチ自身の傾きが生じることも懸念されるが、当該実施形態によるスイッチのように、突出部７１をケース６１の外縁部近傍の四隅に一つずつ対応させて設けたものであれば、その短手方向側などへのスイッチ自身の傾きも同様に抑制されるようになる。 It should be noted that there is a concern that the switch itself may be tilted toward the lateral side of the case 61 depending on the molten state of the solder of the land portions 52 and 54 and the shape setting of the first flat surface portion 63. If the protrusions 71 are provided so as to correspond to the four corners near the outer edge of the case 61 one by one, the inclination of the switch itself to the lateral side or the like is similarly suppressed. Will be.

以上のように、当該実施形態によるスイッチは、一方の第２平面部６５において第１端子１５の近傍位置に突出部７１を二つ設置した構成としているため、一方の第２平面部６５側のクリーム半田が先に溶融することで、第１端子１５同士が下方に引き寄せられたとしても、スイッチ自身が長手方向側で傾く現象が低減されるものに実現できる。このために、リフロー半田付け時に、従来のものに比べて傾いて実装されることが低減されて、安定したリフロー実装が可能なスイッチとして提供することができる。 As described above, since the switch according to the embodiment has a configuration in which two projecting portions 71 are installed in the vicinity of the first terminal 15 on one of the second plane portions 65, it is on the side of the second plane portion 65 on one side. By melting the cream solder first, even if the first terminals 15 are attracted downward, the phenomenon that the switch itself tilts in the longitudinal direction can be reduced. For this reason, it is possible to provide a switch capable of stable reflow mounting by reducing the tilting mounting during reflow soldering as compared with the conventional one.

なお、突出部７１の断面形状や先端形状は特に限定されるものではなく、例えば、水平断面が矩形状や多角形状等のものとしたり、先端を球面状以外の形状にするなどとしてもよい。 The cross-sectional shape and tip shape of the protruding portion 71 are not particularly limited, and for example, the horizontal cross section may be rectangular or polygonal, or the tip may be a shape other than spherical.

また、突出部７１の設置位置や数としても、ケース６１の下面における四隅に一つずつ設けたもののみに限定はされない。 Further, the installation position and number of the protrusions 71 are not limited to those provided at each of the four corners on the lower surface of the case 61.

例えば、上述した突出部７１付きのものに、さらに、一方の第２平面部６５の第１端子１５同士の間、ならびに他方の第２平面部６５の第２端子２６同士の間にも突出部７１を一つずつ設けたもの等としてもよい。または、第１端子１５同士の間、第２端子２６同士の間のみに突出部７１が一つずつ設けられたもの等としてもよい。 For example, in addition to the above-mentioned one with the protrusion 71, there are also protrusions between the first terminals 15 of one second flat surface portion 65 and between the second terminals 26 of the other second flat surface portion 65. 71 may be provided one by one. Alternatively, the protrusions 71 may be provided one by one only between the first terminals 15 and between the second terminals 26.

突出部７１は、その先端が第１平面部６３よりも突出しないほうが好ましい。これは、スイッチの操作状態を考慮すると、操作される位置の真下となる第１平面部６３が配線基板５０で受けられた実装状態になるほうが好ましいからである。 It is preferable that the tip of the protruding portion 71 does not protrude more than the first flat surface portion 63. This is because, considering the operating state of the switch, it is preferable that the first flat surface portion 63 directly below the operated position is in the mounting state received by the wiring board 50.

そして、本発明は、リフロー半田付け時に、スイッチ自身が傾いて実装されることを低減することを目的としており、その構成事例として上記には突出部７１を設けたものを説明したが、突出部７１以外でも同等の作用が得られる構成のものとすることも可能である。 An object of the present invention is to reduce the fact that the switch itself is tilted and mounted at the time of reflow soldering. As a configuration example thereof, a protrusion 71 is provided above, but the protrusion 71 has been described above. It is also possible to have a configuration other than 71 that can obtain the same effect.

そのような変形例としては、図４に示したものが挙げられる。図４に示したものは、上述した突出部７１を設けたケース６１を用いる代わりに、ケース６１Ａを用いて構成している。 Examples of such modifications include those shown in FIG. The one shown in FIG. 4 is configured by using the case 61A instead of using the case 61 provided with the protrusion 71 described above.

ケース６１Ａの底部の下面には、突出部７１が設けられておらず、その代わりとして第１平面部６３に延設部６３Ａを一体で設けたものとしている。 The protruding portion 71 is not provided on the lower surface of the bottom portion of the case 61A, and instead, the extending portion 63A is integrally provided on the first flat surface portion 63.

第１平面部６３の延設部６３Ａは、細幅の直線状で、第１平面部６３からケース６１Ａの短手側の対向する外縁それぞれに沿って各々の第２平面部６５に向かって突出する形状で形成されたものとなっている。なお、延設部６３Ａの高さ位置は、突出部７１と同様に、第１平面部６３と同じ高さ位置、もしくはそれよりも僅かに高い位置、つまり前記第１平面部６３よりも突出していない高さ位置となるように設定されているとよい。そして、延設部６３Ａの第２平面部６５への突出量は、突出側となる端部位置が、できるだけ第１端子１５、第２端子２６の近傍位置になる設定にすると好ましい。 The extension portion 63A of the first plane portion 63 is a narrow linear shape and protrudes from the first plane portion 63 toward each of the second plane portions 65 along the opposing outer edges on the short side of the case 61A. It is formed in a shape that makes it. The height position of the extension portion 63A is the same as the protrusion portion 71, the same height position as the first plane portion 63, or a position slightly higher than that, that is, the extension portion 63A protrudes from the first plane portion 63. It is good that it is set so that it is not at a height position. The amount of protrusion of the extension portion 63A to the second flat surface portion 65 is preferably set so that the position of the end portion on the protruding side is as close to the first terminal 15 and the second terminal 26 as possible.

この変形例の構成であっても、上述した突出部７１と同様に延設部６３Ａが作用するため、リフロー半田付け時に、スイッチ自身が長手方向側などに傾く現象が低減できる。なお、延設部６３Ａを、第１端子１５同士の間や第２端子２６同士の間に設けるなどしてもよいことは、突出部７１の場合と同様である。 Even in the configuration of this modified example, since the extending portion 63A operates in the same manner as the above-mentioned protruding portion 71, the phenomenon that the switch itself tilts to the longitudinal direction or the like at the time of reflow soldering can be reduced. It should be noted that the extension portion 63A may be provided between the first terminals 15 and between the second terminals 26, as in the case of the protrusion 71.

なお、以上に説明したものにおいて、ケース６１、６１Ａの外形などの形状設定は、特に限定されない。また、第１端子１５、第２端子２６の導出位置や本数、スイッチ接点部の構成などについても特に限定されるものではない。 In the above description, the shape setting such as the outer shape of the cases 61 and 61A is not particularly limited. Further, the lead-out position and number of the first terminal 15 and the second terminal 26, the configuration of the switch contact portion, and the like are not particularly limited.

本発明によるスイッチは、リフロー半田付け時に、傾いて実装されることが低減できるものとして提供でき、主に各種電子機器の入力操作部用等に有用である。 The switch according to the present invention can be provided as a switch that can be mounted in a tilted manner at the time of reflow soldering, and is mainly useful for an input operation unit of various electronic devices.

１０第１固定接点
１５第１端子
２０第２固定接点
２６第２端子
３０可動接点
４０保護シート
５０配線基板
５２、５４ランド部
６１、６１Ａケース
６３第１平面部
６３Ａ延設部
６５第２平面部
７１突出部

10 1st fixed contact 15 1st terminal 20 2nd fixed contact 26 2nd terminal 30 Movable contact 40 Protective sheet 50 Wiring board 52, 54 Land part 61, 61A Case 63 1st flat part 63A Extension part 65 2nd flat part 71 protruding part

Claims

An electronic device including a wiring board and a switch in which a plurality of terminals derived from a case are soldered and mounted on the surface of the wiring board.
The case of the switch
With a recess
The bottom located below the recess and
Have,
On the lower surface of the bottom, which is positioned to face the surface when mounted on the surface,
The first flat surface portion located at a position overlapping the recess,
A second flat surface portion adjacent to the first flat surface portion, above the first flat surface portion and outward from a position overlapping the recess, and at least one of the terminals is derived from the second flat surface portion.
A protruding portion protruding downward from the second flat surface portion,
An electronic device characterized by being provided with.

The electronic device according to claim 1, wherein the protruding portion is provided at a height at which the tip thereof does not protrude downward from the first flat surface portion.

The electronic device according to claim 1, wherein an extension portion is provided on the lower surface of the bottom portion so as to project from the first flat surface portion toward the second flat surface portion and connect to the protruding portion.

A case having a recess and a bottom located in a first direction from the recess,
A first terminal derived from the case in a second direction orthogonal to the first direction,
With
The bottom is
A first surface that overlaps the recess in the first direction,
A second surface located in a third direction opposite to the first direction from the first surface and located in the second direction from the overlapping region overlapping the recess in the first direction.
A first protruding portion protruding from the second surface in the first direction,
Have,
The second surface is located outside the overlapping region.
Switch and
The wiring board to which the switch is soldered and
Electronic equipment equipped with.

The first protrusion is
A first protrusion located in the first direction and a fourth direction orthogonal to the second direction from the first terminal and projecting from the second surface in the first direction.
A second protrusion located in a fifth direction opposite to the fourth direction from the first terminal and projecting from the second surface in the first direction.
including,
The electronic device according to claim 4.

Further provided with a second terminal led out from the case in a sixth direction opposite to the second direction.
The bottom is
A third surface located in the third direction with respect to the first surface and in the sixth direction with respect to the overlapping region.
A second protruding portion protruding from the third surface in the first direction,
Have,
The third surface is located outside the overlapping region.
The electronic device according to claim 5.

The second protrusion is
A first protrusion located in the fourth direction with respect to the second terminal and projecting from the third surface in the first direction.
A second protrusion located in the fifth direction with respect to the second terminal and projecting from the third surface in the first direction.
including,
The electronic device according to claim 6.

A case having a recess including a side surface and opening in a first direction, a side wall including an annular end surface connected to the side surface, and a bottom portion located in a second direction opposite to the first direction from the recess. ,
A first terminal derived from the case in a third direction orthogonal to the first direction, and
A second terminal led out from the case in the fourth direction opposite to the third direction,
With
The bottom is
A first plane located in the second direction from the recess so as to overlap the recess.
A second plane located in the first direction with respect to the first plane and in the third direction with respect to the first plane.
A third plane located in the first direction with respect to the first plane and located in the fourth direction with respect to the first plane.
A first protruding portion protruding from the second plane in the second direction,
A second protruding portion protruding from the third plane in the second direction,
Have,
The second plane and the third plane are located in the second direction with respect to the end face so as to overlap the end face.
The tip of the first protrusion and the tip of the second protrusion are located at the same position as the first plane or in the first direction with respect to the first plane.
Switch and
The wiring board to which the switch is soldered and
Electronic equipment equipped with.

The first protruding portion has a first protruding portion and a second protruding portion.
The first terminal passes through a position between the first protruding portion and the second protruding portion.
The tips of the first protruding portion and the second protruding portion are located at the same position as the first plane or in the second direction with respect to the first plane.
The electronic device according to claim 8.

The first protruding portion faces the second protruding portion with at least the first terminal interposed therebetween.
The electronic device according to claim 9.

The second protruding portion has a third protruding portion and a fourth protruding portion.
The second terminal passes through a position between the third protruding portion and the fourth protruding portion.
The tips of the third protruding portion and the fourth protruding portion are located at the same position as the first plane or in the second direction with respect to the first plane.
The electronic device according to claim 8 to 10.

The third protruding portion faces the fourth protruding portion with at least the second terminal interposed therebetween.
The electronic device according to claim 11.

The case has a rectangular shape when the case is viewed from the end face side.
The 11th to 12th claims, wherein the first protruding portion, the second protruding portion, the third protruding portion, and the fourth protruding portion are provided so as to correspond to the four corners of the case. The electronic device described.

The 11th to 13th claims, wherein the first protruding portion, the second protruding portion, the third protruding portion, and the fourth protruding portion are provided in the vicinity of the outer edge portion of the case. The electronic device described.

The case has a rectangular shape when the case is viewed from the end face side.
The first protruding portion, the second protruding portion, the third protruding portion, and the fourth protruding portion are symmetrical with respect to the longitudinal direction of the case and the lateral direction of the case. The electronic device according to claim 11 to 14, which is provided.

The first protruding portion has a first protruding portion and a second protruding portion.
The first terminal passes through a position between the first protruding portion and the second protruding portion.
The tips of the first protruding portion and the second protruding portion are located at the same position as the first plane or in the second direction with respect to the first plane.
The second protruding portion has a third protruding portion and a fourth protruding portion.
The second terminal passes through a position between the third protruding portion and the fourth protruding portion.
The tips of the third protruding portion and the fourth protruding portion are located at the same position as the first plane or in the second direction with respect to the first plane.
Each of said first projecting portion and the second projecting portion and the third projecting portion and the fourth protruding portion is a section on a plane along the first plane is circular, claim 8 The electronic device described.

The first protruding portion has a first protruding portion and a second protruding portion.
The first terminal passes through a position between the first protruding portion and the second protruding portion.
The tips of the first protruding portion and the second protruding portion are located at the same position as the first plane or in the second direction with respect to the first plane.
The second protruding portion has a third protruding portion and a fourth protruding portion.
The second terminal passes through a position between the third protruding portion and the fourth protruding portion.
The tips of the third protruding portion and the fourth protruding portion are located at the same position as the first plane or in the second direction with respect to the first plane.
The electronic device according to claim 8 , wherein the tips of the first protruding portion, the second protruding portion, the third protruding portion, and the fourth protruding portion are spherical.

The first protruding portion and the second protruding portion are connected to the first plane.
The electronic device according to claim 8.

The second protruding portion has a third protruding portion that faces the first protruding portion with the first plane in between.
The tip of the third protruding portion is located at the same position as the first plane or in the first direction with respect to the first plane.
The electronic device according to claim 9 to 10.

The electronic device according to claim 8 to 19, wherein each of the second plane and the third plane is a plane parallel to the first plane.

The case contains resin and
The first terminal is exposed from the resin on the second plane and is led out to the outside of the case.
The second terminal is exposed from the resin on the third plane and is led out to the outside of the case.
The electronic device according to claim 8 to 20.

A recess that includes a bottom surface and a side surface that connects to the bottom surface and surrounds the bottom surface and opens upward, a side wall that includes an annular upper end surface that connects to the side surface, and a bottom portion that is located below the recess and connects to the side wall. With the case to have
The first terminal derived from the case and
With
The bottom is
A first plane at a position overlapping the recess,
A second plane located above the first plane and in the direction in which the first terminal is derived from the first plane and overlapping the upper end surface.
A first protruding portion and a second protruding portion that are provided on the second plane and project downward from the second plane.
Including
The first terminal is arranged so as not to overlap the first plane, and intersects the second plane so as to pass through a position between the first protruding portion and the second protruding portion.
It said first protrusion position of the tip and the tip of the second protrusion position is either the same position as the first plane is located above the first plane,
Switch and
The wiring board to which the switch is soldered and
Electronic equipment equipped with.

The first terminal is exposed from the case on the second plane and is led out to the outside of the case.
The electronic device according to claim 22.