JP6425306B2 - Movable contact member, method of manufacturing the same, and switch device using the movable contact member - Google Patents

Description

  The present invention relates to a movable contact member and a switch device using the movable contact member, and in particular, the movable contact member performs a reversing operation by pressing operation to move the contacts, and a manufacturing method thereof. And a switch device using the movable contact member.

  Generally, as a movable contact member used in an electronic device such as a digital camera or a mobile phone, the movable contact member is reversely operated by being pressed to obtain an operation feeling such as an operating force or a click feeling. The movable contact member which contacts and separates is used. As such a movable contact member, it is well known that a thin metal plate is processed to form a dome shape with a predetermined curvature.

  As a conventional example of a switch device using such a movable contact member, Patent Document 1 proposes a push button switch 910 (switch device) as shown in FIG. FIG. 15 is an exploded perspective view of a push button switch 910 using a conventional contact plate 912 (movable contact member).

  The push button switch 910 shown in FIG. 15 has an insulating base 911 in which a terminal 923 (first fixed contact) and a terminal 924 (second fixed contact) are embedded in a substantially box shape, and a contact plate accommodated in the insulating base 911 912, a dust cover 913 covering the contact plate 912, a push button 914 for operating the contact plate 912 via the dust cover 913, and the insulating base 911 in a state where the button portion 939 of the push button 914 is penetrated. The lid 915 is closed. Further, the contact plate 912 is formed by punching a flat plate of spring material, and as shown in FIG. 15, the whole is formed into a rectangular shape, and a bulging portion 951 as a contact portion bulging in an oval shape; It is comprised from the four corner parts 952 left without making it. When the contact plate 912 having a rectangular shape having such a short direction (X direction shown in FIG. 15) and a long direction (Y direction shown in FIG. 15) is used, the width direction (short The size of the direction can be reduced, and the operation stroke obtained from the size of the contact plate 912 in the longitudinal direction, that is, the operation stroke equivalent to that in the case of a square formed by the size in the longitudinal direction can be secured. can get.

Japanese Patent Application Publication No. 2003-187664

  However, in general, in the case of the movable contact member in which the reversing operation is performed, when the movable contact member is depressed, the outer shape of the movable contact member spreads outward, so that tensile stress is generated at the end of the outer periphery become. In particular, the end portion of the long side in the short direction (SE in the conventional example shown in FIG. 15) tends to have a noticeable adverse effect due to the tensile stress. For this reason, under conditions such as a high operating load and a long operation stroke, stress is concentrated at the end of the outer periphery to generate a crack or the like, resulting in a problem that the life is reduced. On the other hand, in the conventional example, the occurrence of a crack can be prevented by providing the corner portion 952 with a portion (joint portion 954 shown in FIG. 15) to be cut off at the time of punching. It is not a means.

  An object of the present invention is to solve the problems described above, and to provide a movable contact member having a long life and a method of manufacturing the same, and a switch device using the movable contact member.

  In order to solve this problem, the movable contact member of the present invention, the method of manufacturing the same, and the switch device using the movable contact member are provided with a bulging portion capable of being reversely operated by a dome-like bulging pressure and the bulging portion A movable contact member having an outer shape having a lateral direction and a longitudinal direction, the movable contact member having a plurality of legs supporting a portion, wherein the plurality of legs are planarly viewed in plan view; At least one is provided on each side opposite to the bulging portion, and both ends in the lateral direction are bent in the bulging side in a longitudinal cross-sectional view along the lateral direction. It has a flip-up portion, and the flip-up portion is extended along the longitudinal direction.

  According to this, in the movable contact member of the present invention, when the bulging portion is pressed and reverses, the bounce-up portion suppresses the spread of the bulging portion in the short direction. For this reason, concentration of internal stress (tensile stress pulled to the longitudinal direction side) at the outer peripheral end in the short direction can be reduced. As a result, defects such as cracks at the outer peripheral end in the short direction can be reduced, and a long life can be achieved.

  In the movable contact member according to the present invention, the bulging portion has a wave portion formed in a wave shape in a longitudinal cross-sectional view of the short direction, and the wave portion extends along the longitudinal direction. It is characterized by being set up.

  According to this, when the bulging portion is pressed and turned over, in addition to the flip-up portion, the wave portion further suppresses the spread of the bulging portion in the short direction. For this reason, concentration of internal stress (tensile stress pulled to the longitudinal direction side) at the outer peripheral end in the lateral direction can be further reduced. As a result, defects such as cracks at the outer peripheral end in the short direction can be further reduced, and a longer life can be achieved.

  Further, the movable contact member of the present invention is characterized in that the bulging portion has a notch forming a part of the outer periphery in the short direction.

  According to this, since the bulging portion having the larger outer shape is provided and the notch portion is formed in a part of the outer periphery in the short direction, the bulging portion having the larger outer shape is Since the notch portion is provided and formed in a part of the outer periphery in the short direction, a longer operation stroke can be made in the reversing operation of the bulging portion. On the other hand, when a notch is provided in the bulging portion in the short direction, the internal stress (tensile stress) is applied by this notch, but this jump has a jump-up portion in the portion of this notch In the invention, the concentration of internal stress (tensile stress) at the notch can be reduced. For this reason, defects, such as a crack in a notch part, are reduced. As a result, it is possible to secure a longer operation stroke while prolonging the life.

Further, the movable contact member of the present invention is characterized in that the outer shape when viewed in plan from the bulging portion side is formed in line symmetry with the central portion in the short side direction.

  According to this, in the reverse operation of the bulging portion, the action of reducing the internal stress by the flip-up portion with respect to the outer peripheral end in the short direction to which the internal stress (tensile stress) is applied is both sides in the short direction. Will work equally well. As a result, the internal stress (tensile stress) is not biased to either one, and the life can be further prolonged.

  Further, the method for manufacturing a movable contact member according to the present invention includes a bulging portion that can be reversely operated by a dome-like bulging pressure and a plurality of leg portions supporting the bulging portion, and the outer shape is A method of manufacturing a movable contact member having a lateral direction and a longitudinal direction, the outline forming a plate-like base member having the lateral direction and the longitudinal direction while leaving a connecting portion from a sheet-like metal material. A processing step, a bending step of bending both end portions in the short direction to one side along the longitudinal direction to form a bending member with respect to the base member, and a flat surface with respect to the bending member A drawing process step of forming a drawn member by squeezing so as to bulge toward the one side toward the one side centering on the central portion in the lateral direction and the longitudinal direction in view, and the drawn member Of the connecting portion connected to the Cutting in accordance with the shape, and in the drawing process, the bulging part is formed, and the flip-up part bent to the bulging side is along the longitudinal direction. It is characterized in that it is extended and formed at both ends in the short side direction.

  According to this, it is possible to easily manufacture the movable contact members in which the flip-up portion bent to the bulging side of the bulging portion is extended along the longitudinal direction and provided at both ends in the short direction. it can. This makes it possible to reduce the concentration of internal stress (tensile stress) at the outer peripheral end in the lateral direction when the bulging portion is pressed and turned in reverse, thereby reducing defects such as cracks at the outer peripheral end, It is possible to provide a movable contact member capable of achieving long life.

  The bending process includes a wave bending process in which the bending process is performed along the longitudinal direction so that the short direction is viewed in a longitudinal cross section to be uneven. g

  According to this, it is possible to easily manufacture the movable contact member in which the wave portion formed in the wave shape is provided in the bulging portion. For this reason, when the bulging portion is pressed and reverses, the wave portion further suppresses the spread of the bulging portion in the short side direction in addition to the flip-up portion, and the inside at the outer peripheral end in the short side direction The concentration of stress (tensile stress pulled in the longitudinal direction) can be further reduced. As a result, defects such as cracks at the outer peripheral end in the short direction can be further reduced, and a movable contact member capable of achieving longer life can be provided.

  The movable contact member according to the present invention is characterized in that the connecting portion is provided in connection with the leg portion in the outer shape processing step.

  According to this, the cut surface which cut | disconnected the connection part which arises in the cutting process process after a drawing process is provided not in the flip-up part formed in the both ends in a transversal direction but in a leg part. For this reason, the action of suppressing the spread of the bulging portion in the short direction by the flip-up portion is not reduced by the cut surface, and concentration of internal stress (tensile stress pulled in the longitudinal direction) at the outer peripheral end in the short direction. Can be reliably reduced. As a result, defects such as cracks at the outer peripheral end in the short direction can be reliably reduced, and a movable contact member capable of reliably achieving long life can be provided.

  A movable contact member according to the present invention comprises: the movable contact member according to any one of claims 1 to 4; and a first fixed contact member capable of coming into contact with or being separated from the top of the bulging portion of the movable contact member. A second fixed contact member in contact with the leg portion of the movable contact member; a first terminal portion electrically connected to the first fixed contact member; and an electrical connection to the second fixed contact member And a second terminal portion.

  According to this, since the movable contact member according to any one of claims 1 to 4 is provided, the internal stress at the outer peripheral end in the short direction when the bulging portion is pressed and turned over. It is possible to provide a switch device capable of reducing the concentration of (tensile stress), reducing defects such as cracks at the outer peripheral end, and prolonging the life.

  In the movable contact member of the present invention, when the bulging portion is pressed and turned over, the bounce-up portion suppresses the spread of the bulging portion in the short direction. For this reason, concentration of internal stress (tensile stress pulled to the longitudinal direction side) at the outer peripheral end in the short direction can be reduced. As a result, defects such as cracks at the outer peripheral end in the short direction can be reduced, and a long life can be achieved.

  Further, in the method of manufacturing the movable contact member according to the present invention, the movable contact is provided with the flip-up portion bent on the bulging side of the bulging portion extending along the longitudinal direction and provided at both ends in the lateral direction. The member can be easily manufactured. This makes it possible to reduce the concentration of internal stress (tensile stress) at the outer peripheral end in the lateral direction when the bulging portion is pressed and turned in reverse, thereby reducing defects such as cracks at the outer peripheral end, It is possible to provide a movable contact member capable of achieving long life.

  Further, in the switch device using the movable contact member according to the present invention, when the bulging portion of the movable contact member is pressed and reverses, internal stress (tensile stress at the outer peripheral end of the movable contact member in the lateral direction) Can be reduced, defects such as cracks at the outer peripheral end can be reduced, and a switch device capable of achieving longer life can be provided.

It is a perspective view of the movable contact member of 1st Embodiment of this invention. It is a top view of the movable contact member of 1st Embodiment of this invention. It is a figure explaining the movable contact member of 1st Embodiment of this invention, Comprising: Fig.3 (a) is the front view seen from the Y2 side in FIG. 1, FIG.3 (b) is shown in FIG. It is sectional drawing in the III-III line. It is a figure explaining the movable contact member of 1st Embodiment of this invention, Comprising: It is an expanded sectional view of P part shown in FIG.3 (b). FIG. 5A is a process diagram for explaining a method of manufacturing a movable contact member according to the first embodiment of the present invention, and FIG. 5A is a top view showing a state after an outer shape processing step; FIG. 5 (c) is a top view showing a state after a drawing process, and FIG. 5 (d) is a state after a cutting process. It is the top view which showed. FIG. 6A is a view for explaining the method of manufacturing the movable contact member according to the first embodiment of the present invention, and FIG. 6A is a view showing a punch and a die in a bending process; FIG. 6 is a view showing a punch and a die in a drawing process. It is a perspective view of the push switch of 2nd Embodiment of this invention. It is a disassembled perspective view of the push switch of 2nd Embodiment of this invention. It is a perspective view of the seat switch of a 3rd embodiment of the present invention. It is a figure explaining the sheet switch concerning 3rd Embodiment of this invention, Comprising: Fig.10 (a) is a top view of the sheet switch seen from Z1 side shown in FIG. 9, FIG.10 (b) is a It is a side view of the seat switch seen from the X1 side shown in FIG. It is a figure explaining the sheet switch concerning 3rd Embodiment of this invention, Comprising: Fig.11 (a) is sectional drawing in the XI-XI line shown to Fig.10 (a), FIG.11 (b) is It is sectional drawing in the XII-XII line shown to Fig.10 (a). It is a figure explaining the sheet switch concerning 3rd Embodiment of this invention, Comprising: It is a rear view of the sheet member of P part shown to Fig.10 (a). It is a figure explaining the sheet switch concerning 3rd Embodiment of this invention, Comprising: Fig.13 (a) is a top view of the sheet substrate of P part shown to Fig.10 (a), and FIG.13 (b) is. FIG. 11 is a bottom view of the sheet substrate of the Q portion shown in FIG. It is a figure explaining the modification of the movable contact member concerning 1st Embodiment of this invention, Comprising: Fig.14 (a) is a top view of the movable contact member of the modification 2, FIG.14 (b) is a FIG. 21 is a top view of a movable contact member of Modification 3; It is a disassembled perspective view of the push button switch using the contact plate (movable contact member) of a prior art example.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First Embodiment
First, the movable contact member 10 of the first embodiment of the present invention will be described. FIG. 1 is a perspective view of a movable contact member 10 according to a first embodiment of the present invention. FIG. 2 is a top view of the movable contact member 10 according to the first embodiment of the present invention. In addition, in FIG.1 and FIG.2, the raising part 11t mentioned later and the wave part 11w are not shown in figure. Fig.3 (a) is a front view of the movable contact member 10 seen from the Y2 side shown in FIG. 1, FIG.3 (b) is sectional drawing in the III-III line shown in FIG. FIG. 4 is an enlarged cross-sectional view of a portion P shown in FIG.

  The movable contact member 10 according to the first embodiment of the present invention is manufactured by machining a conductive metal plate, and has an appearance as shown in FIG. 1 and a plan view as shown in FIG. The outer shape is formed in a substantially rectangular or oval shape having a short direction SD (YX direction shown in FIG. 2) and a longitudinal direction LD (Y direction shown in FIG. 2). Further, as shown in FIG. 1, the movable contact member 10 sandwiches the bulging portion 11 in the longitudinal direction LD and the bulging portion 11 in which the central portion bulges upward in the dome shape (Z1 direction shown in FIG. 1). And two legs 51 which are provided on opposite ends facing each other and which support the bulging part 11. When the movable contact member 10 is pressed by the bulging portion 11 by the pressing operation of the operator, the bulging portion 11 is reversely operated, and when the pressing is released, the movable contact member 10 returns to the state before the pressing operation. ing.

  Further, as shown in FIG. 2, the movable contact member 10 is formed in line symmetry on both sides of a central portion (IV-IV line shown in FIG. 2) in the short direction SD in plan view. The bulging portion 11 and the two leg portions 51 are formed in line symmetry on both sides of the central portion (the III-III line shown in FIG. 2) of the direction LD. In addition, the inner surface (concave surface) of the movable contact member 10 is silver-plated in order to obtain the electrical contact stability with the contact member (generally the fixed contact member) in contact when it is reversed. There is. The pressing operation by the operator is performed by an operation member (not shown) (including the finger of the operator).

  In the movable contact member 10, as shown in FIG. 3, flip-up portions 11t provided at both ends in the short direction SD are extended along the longitudinal direction LD of the both ends. As shown in FIGS. 3 (b) and 4, when viewed from the longitudinal section along the latitudinal direction SD, the flip-up portion 11 t is a bulged portion with respect to the virtual ridge line KL of the bulged portion 11. It is bent to the bulging side of 11. The flip-up portion 11 t is provided to a part of the bulging portion 11 and is extended to the two leg portions 51 so as to extend to the outer peripheral end L 1 of the leg portion 51.

  As a result, when the bulging portion 11 is pressed and turned upside down, the bounce-up portion 11t suppresses the spread of the bulging portion 11 in the short direction SD. For this reason, concentration of internal stress (tensile stress pulled to the longitudinal direction LD side) at the outer peripheral end S1 in the short direction SD can be reduced. As a result, defects such as cracks at the outer peripheral end S1 in the short direction SD can be reduced, and a long life can be achieved.

  Further, in the first embodiment of the present invention, as shown in FIG. 2, the bulging portion 11 which has been bulging in a circular shape has a notch 11k in which a part of the circular shape is chipped. The notches 11k form a part of the outer periphery formed on both sides in the lateral direction SD. As a result, the internal stress (tensile stress) at the outer peripheral end S1 in the short direction SD is applied by the notch 11k, but in the present invention having the bounce-up portion 11t, the inside of the notch 11k The concentration of stress (tensile stress) can be reliably reduced. For this reason, defects, such as a crack in the notch 11k, are reduced. On the other hand, since it is constituted so that it may become a circular shaped bulging part 11 with a larger outside diameter by making one part into notch 11k, in inversion operation of bulging part 11, it can be made a longer operation stroke. As a result, it is possible to secure a longer operation stroke while prolonging the life.

  Further, since the flip-up portions 11t provided at both ends are bent toward the bulging side of the bulging portion 11, the bulging portion 11 including the flip-up portions 11t is pushed and reversed. , A larger pressing load. For this reason, a better click feeling (operation feeling) can be obtained for the operator.

  Further, since the flip-up portion 11t is formed in line symmetry on both sides of the central portion in the lateral direction SD, the lateral direction SD in which internal stress (tensile stress) is more likely to be applied when the bulging portion 11 is reversed. With respect to the outer peripheral end S1, the action of reducing the internal stress by the flip-up portion 11t works equally on both sides in the short direction SD. As a result, the internal stress (tensile stress) is not biased to either one, and the life can be further prolonged.

  Further, in the movable contact member 10 according to the first embodiment of the present invention, in the bulging portion 11, as shown in FIG. 11 w is provided. In other words, with respect to the imaginary ridge line KL of the bulging part 11, the convex part protruding to the bulging side and the concave part protruding to the opposite side to the bulging side with respect to the imaginary ridge line KL of the bulging part 11 It can be said that the shape is a combination of The wave portion 11 w is extended along the longitudinal direction LD and is extended to the two leg portions 51 so as to extend to the outer peripheral end L 1 of the leg portion 51. In the first embodiment of the present invention, two wave portions 11 w are provided, and the two wave portions 11 w are formed in line symmetry with respect to the central portion in the short direction SD.

  As a result, when the bulging portion 11 is pressed and turned over, in addition to the flip-up portion 11t, the wave portion 11w further suppresses the spread of the bulging portion 11 in the short direction SD. For this reason, concentration of internal stress (tensile stress pulled to the longitudinal direction LD side) at the outer peripheral end S1 in the short direction SD can be further reduced. As a result, defects such as cracks at the outer peripheral end S1 in the short direction SD can be further reduced, and a longer life can be achieved.

  Moreover, the wave part 11w is formed in the bulging part 11, and when the bulging part 11 containing this wave part 11w is pushed and it reverses, it becomes large pressing load. For this reason, a better click feeling (operation feeling) can be obtained for the operator.

  Further, in the leg portion 51 of the movable contact member 10 according to the first embodiment of the present invention, the cut surface 51p which can be cut and processed into individual movable contact members 10 at the time of manufacture is short It will be provided in the leg part 51 instead of the flip-up part 11t formed in the both ends in direction SD. Therefore, the action of suppressing the spread of the bulging portion 11 in the lateral direction SD by the flip-up portion 11t is not reduced by the cut surface 51p, and the internal stress at the outer peripheral end S1 in the lateral direction SD (longitudinal direction LD side It is possible to reliably reduce the concentration of tensile stress). As a result, defects such as cracks at the outer peripheral end S1 in the short direction SD can be reliably reduced, and long life can be reliably achieved. Moreover, since the joint portion 91 is provided by connecting to the central portion in the short direction SD of the leg portion 51, the joint portion 91 is provided in the vicinity of the wave portion 11w (a position sandwiched by the wave portion 11w). Therefore, when an internal stress (tensile stress) is applied to the outer peripheral end L1 in the longitudinal direction LD, the wave portion 11w is an internal stress (tensile stress) with respect to the cut surface 51p which is weak by the internal stress (tensile stress). It contributes to the reduction of the concentration of

  Next, a method of manufacturing the movable contact member 10 according to the first embodiment of the present invention will be described. FIG. 5 is a process diagram for explaining a method of manufacturing the movable contact member 10 according to the first embodiment of the present invention, and FIG. 5 (a) is a top view showing a state after the outer shape processing step P1. 5 (b) is a top view showing the state after the bending process P2, and FIG. 5 (c) is a top view showing the state after the drawing process P3; FIG. 5 (d) These are the top views which showed the state after the cutting process process P4. Although FIG. 5 shows a state in which three movable contact members 10 are manufactured in order to make the description easy to understand, the present invention is not limited to these three. Moreover, in FIG.5 (b) thru | or FIG.5 (d), in order to make description intelligible, the bent part is typically shown with the virtual line. FIG. 6 is a view for explaining the method of manufacturing the movable contact member 10 according to the first embodiment of the present invention, and FIG. 6 (a) is a view showing the punch 2P and the die 2D in the bending process P2. FIG. 6 (b) is a view showing the punch 3P and the die 3D in the drawing process P3. Although FIG. 6 shows the shape of the vertical cross section, hatching of the cross section is omitted to make the description easy to understand.

  In the method of manufacturing the movable contact member 10 according to the first embodiment of the present invention, as shown in FIG. 5, an outer shape processing step P1 of forming a base member B1 having a latitudinal direction SD and a longitudinal direction LD; Bending process P2 in which both ends in the short direction SD of B1 are bent to one side to form a bending member C1, and the bending member C1 is squeezed so as to bulge in a dome shape toward one side A drawing process P3 for forming the member D1 and a cutting process P4 for cutting the connecting portion 91 connected to the drawing member D1 according to the outer shape are included. Further, in the first embodiment of the present invention, in the method of manufacturing the movable contact member 10, in the bending process P2, bending is performed along the longitudinal direction LD so that the short direction SD is viewed in a longitudinal cross section to be uneven. A wave bending process P22 is included.

  First, an outer shape processing step P1 for forming the base member B1 is performed. In the outer shape processing step P1, a base material A1 which is a sheet-like metal material is prepared, and punching is performed on the base material A1 using a die (a punch and a die). Thereby, as shown to Fig.5 (a), the plate-shaped base member B1 which had the transversal direction SD and longitudinal direction LD is formed in the base material A1, with the connection part 91 remaining. Further, the connecting portion 91 is a portion which finally becomes the leg portion 51 of the movable contact member 10 and is connected to the central portion of the leg portion 51 in the short direction SD.

  Next, a bending process P2 for forming the bending member C1 is performed. In the bending process P2, bending is performed on the base member B1 using the punch 2P and the die 2D (mold) shown in FIG. Thereby, as shown in FIG. 5B, the base member B1 is bent along the longitudinal direction LD to one end (in FIG. 5B, the front side of the paper surface) of both ends in the short direction SD It is formed in the shape of a bending member C1.

  Further, in the punch 2P and the die 2D, as shown in FIG. 6A, the short direction SD (X direction shown in FIG. 6) is also applied to portions corresponding to the inner portions other than the both end portions of the bending member C1. When viewed in a longitudinal cross section, the uneven shape (wave shape) is given. Therefore, as shown in FIG. 6 (b), the bending member C1 has a concavo-convex shape (wave shape) when the short direction SD is viewed in a longitudinal cross section, as shown in FIG. 5 (b). The uneven shape (corrugated shape) is formed along the longitudinal direction LD. Thereby, the wave bending process P22 which bends base member B1 along longitudinal direction LD so that it may become uneven shape (waveform shape), simultaneously with the process which bends the both ends of base member B1 to one side in bending process P2. To be done. In the first embodiment of the present invention, the bending step P2 is suitably performed simultaneously with the step of bending the both end portions of the base member B1 to one side, but may be separately performed.

  Next, a drawing process P3 for forming the drawing member D1 is performed. In the drawing process P3, the bent member C1 is drawn using the punch 3P and the die 3D (mold) shown in FIG. 6 (b). As a result, as shown in FIG. 5C, the bending member C1 is squeezed toward one side centering on the central portion of the latitudinal direction SD and the longitudinal direction LD in a plan view, and expands in a dome shape. It is formed in the drawing-processed member D1 of the shape which came out.

  Then, in the squeezing process P3, the bulging portion 11 of the movable contact member 10 is formed, and the flip-up portion 11t bent to the bulging side of the bulging portion 11 extends along the longitudinal direction LD. And formed at both ends in the short direction SD. At the same time, two wave portions 11w are formed along the longitudinal direction LD.

  Finally, a cutting process step P4 of cutting the connecting portion 91 is performed. In the cutting process step P4, the drawn member D1 is cut using a die (punch and die). As a result, as shown in FIG. 5D, the drawn member D1 is cut along the portion of the connecting portion 91 connected to the drawn member D1 in accordance with the final outer shape of the movable contact member 10. , Individually formed on the movable contact members 10.

  According to the manufacturing method as described above, the dome-like bulging portion 11 capable of being reversely operated by bulging pressure and the plurality of leg portions 51 supporting the bulging portion 11 are provided, and the outer shape is in the short direction The movable contact member 10 having the SD and the longitudinal direction LD is easily manufactured.

  The effects of the movable contact member 10 according to the first embodiment of the present invention configured as described above and the method for manufacturing the same will be collectively described below.

  The movable contact member 10 according to the first embodiment of the present invention is bent to the side where the bulging portion 11 bulges at both ends in the latitudinal direction SD in a longitudinal cross section along the latitudinal direction SD. Since the flip-up portion 11 t has the flip-up portion 11 t and is extended along the longitudinal direction LD, when the bulging portion 11 is pressed and turned over, the flip-up portion 11 t is in the lateral direction The spread of the bulging part 11 in SD will be suppressed. For this reason, concentration of internal stress (tensile stress pulled to the longitudinal direction LD side) at the outer peripheral end S1 in the short direction SD can be reduced. As a result, defects such as cracks at the outer peripheral end S1 in the short direction SD can be reduced, and a long life can be achieved.

  Further, the bulging portion 11 has a wave portion 11w formed in a wave shape in a longitudinal cross-sectional view along the short direction SD, and the wave portion 11w is extended along the longitudinal direction LD. Therefore, when the bulging portion 11 is pressed and turned over, the wave portion 11 w further suppresses the spread of the bulging portion 11 in the short direction SD in addition to the flip-up portion 11 t. For this reason, concentration of internal stress (tensile stress pulled to the longitudinal direction LD side) at the outer peripheral end S1 in the short direction SD can be further reduced. As a result, defects such as cracks at the outer peripheral end S1 in the short direction SD can be further reduced, and a longer life can be achieved.

  Further, since the bulging portion 11 having a larger outer shape is provided and the notch portion 11k is formed in a part of the outer periphery formed on both sides in the short side direction SD, the reversing operation of the bulging portion 11 is longer It can be an operating stroke. On the other hand, when the notch 11k is provided in the bulging portion 11 in the short direction SD, the internal stress (tensile stress) at the outer peripheral end S1 in the short direction SD is applied by the notch 11k. In the first embodiment of the present invention having the flip-up portion 11t at the notch portion 11k, the concentration of internal stress (tensile stress) in the notch portion 11k can be reliably reduced. For this reason, defects, such as a crack in the notch 11k, are reduced. As a result, it is possible to secure a longer operation stroke while prolonging the life.

  Further, since the flip-up portion 11t is formed symmetrically with respect to the central portion in the lateral direction SD, the outer periphery of the lateral direction SD in which internal stress (tensile stress) is more likely to be applied when the bulging portion 11 is reversed. With respect to the end portion S1, the action of reducing the internal stress by the flip-up portion 11t works equally on both sides in the short direction SD. As a result, the internal stress (tensile stress) is not biased to either one, and the life can be further prolonged.

  The manufacturing method of the movable contact member 10 according to the first embodiment of the present invention includes an outer shape processing step P1 of forming a plate-like base member B1 having a short direction SD and a longitudinal direction LD, and a short direction of the base member B1. Bending process P2 of bending both end portions of SD along one longitudinal direction LD to one side to form a bending member C1, and squeezing the bending member C1 so as to expand in a dome shape toward one side It comprised including the squeeze processing process P3 which forms the process member D1, and the cutting process process P4 which cut | disconnects the connection part 91 connected to the squeeze process member D1. Therefore, the movable contact members 10 are easily manufactured in which the flip-up portion 11t bent on the bulging side of the bulging portion 11 is extended along the longitudinal direction LD and provided at both ends in the lateral direction SD. can do. This makes it possible to reduce the concentration of internal stress (tensile stress) at the outer peripheral end S1 in the short direction SD when the bulging portion 11 is pressed and reversed, so that defects such as cracks at the outer peripheral end S1 occur. It is possible to provide the movable contact member 10 which can be reduced and the life can be extended.

  In addition, since the bending process P2 includes the wave bending process P22 which is bent along the longitudinal direction LD so as to have a concavo-convex shape by viewing the short direction SD as a longitudinal cross section, the wave portion 11w formed in a wave shape swells. The movable contact member 10 provided in the protrusion 11 can be easily manufactured. For this reason, when the bulging portion 11 is pressed and turned over, the wave portion 11w in addition to the flip-up portion 11t further suppresses the spread of the bulging portion 11 in the short direction SD, and the short direction SD It is possible to further reduce the concentration of internal stress (tensile stress pulled to the longitudinal direction LD side) at the outer peripheral end S1. As a result, defects such as cracks at the outer peripheral end S1 in the short direction SD can be further reduced, and the movable contact member 10 capable of achieving longer life can be provided.

  In addition, since the connecting portion 91 is provided by connecting with the leg portion 51 in the outer shape processing step P1, the cut surface 51p obtained by cutting the connecting portion 91 generated in the cutting processing step P4 after the drawing processing step P3 is in the short direction SD. It will be provided in the leg part 51 instead of the flip-up part 11t formed in the both ends in this. Therefore, the action of suppressing the spread of the bulging portion 11 in the lateral direction SD by the flip-up portion 11t is not reduced by the cutting surface 51p, and the internal stress at the outer peripheral end S1 in the lateral direction SD (to the longitudinal direction LD side The concentration of the tensile stress to be pulled can be reliably reduced. As a result, defects such as cracks at the outer peripheral end S1 in the short direction SD can be reliably reduced, and the movable contact member 10 can be provided that can achieve longer life more reliably.

Second Embodiment
Next, a push switch 200, which is a switch device using the movable contact member 10 according to the first embodiment of the present invention, will be described. FIG. 7 is a perspective view of a push switch 200 according to a second embodiment of the present invention. FIG. 8 is an exploded perspective view of the push switch 200 according to the second embodiment of the present invention. In addition, in FIG. 8, the flip-up part 11t and the wave part 11w are not shown in figure (For the flip-up part 11t and the wave part 11w, refer FIG.3 and FIG.4). About the same composition as a 1st embodiment, the same numerals are attached and detailed explanation is omitted.

  The push switch 200 according to the second embodiment of the present invention has a rectangular parallelepiped appearance as shown in FIG. 7, and as shown in FIG. 8, a movable contact member 10 capable of reversing operation by pressing operation and a movable contact member 10 , And a first fixed contact member 13 and a second fixed contact member 23 exposed to be exposed to the storage portion 2s, and a first fixed contact member 13, the second terminal 24 electrically connected to the second fixed contact member 23, the sheet member 25 disposed so as to cover the accommodation portion 2s, and the movable contact The pusher member 8 disposed between the member 10 and the sheet member 25 is configured. Then, when the push switch 200 is assembled, the movable contact member 10 is accommodated in the accommodation portion 2s of the case 2, the pusher member 8 is placed on the movable contact member 10, and the sheet member 25 accommodates the case 2 It covers the portion 2s and is welded to the case 2.

  Next, each configuration described above will be described in detail. First, the movable contact member 10 of the push switch 200 uses the movable contact member 10 described in detail in the first embodiment, and as shown in FIG. 8, the central portion is directed upward (Z1 direction shown in FIG. 8). It comprises a bulging portion 11 bulging in a dome shape, and two leg portions 51 provided on both ends facing each other across the bulging portion 11 and supporting the bulging portion 11.

  The movable contact member 10 is provided with flip-up portions 11 t extended along the longitudinal direction LD at both ends in the lateral direction SD. When viewed in a longitudinal cross section along the lateral direction SD, the flip-up portion 11t bulges the bulging portion 11 with respect to the virtual ridge line KL of the bulging portion 11 (see FIG. 3B). It is bent to the When the movable contact member 10 is pressed by the bulging portion 11 by the pressing operation of the operator, the bulging portion 11 is reversely operated, and when the pressing is released, the movable contact member 10 returns to the state before the pressing operation. ing.

  As a result, when the bulging portion 11 is pressed and turned upside down, the bounce-up portion 11t suppresses the spread of the bulging portion 11 in the short direction SD. For this reason, concentration of internal stress (tensile stress pulled to the longitudinal direction LD side) at the outer peripheral end S1 in the short direction SD can be reduced. As a result, defects such as cracks at the outer peripheral end S1 in the short direction SD can be reduced, and a long life can be achieved.

  Further, as shown in FIG. 3B, the movable contact member 10 is provided with a wave portion 11w formed in a wave shape in a longitudinal cross section of the short direction SD as shown in FIG. 3B. The wave portion 11 w is extended along the longitudinal direction LD and is extended to the two leg portions 51 so as to extend to the outer peripheral end L 1 of the leg portion 51.

  As a result, when the bulging portion 11 is pressed and turned over, in addition to the flip-up portion 11t, the wave portion 11w further suppresses the spread of the bulging portion 11 in the short direction SD. For this reason, concentration of internal stress (tensile stress pulled to the longitudinal direction LD side) at the outer peripheral end S1 in the short direction SD can be further reduced. As a result, defects such as cracks at the outer peripheral end S1 in the short direction SD can be further reduced, and a longer life can be achieved. In the push switch 200 of the second embodiment of the present invention, the movable contact member 10 described in detail in the first embodiment is used, and thus the detailed description of the movable contact member 10 will be omitted.

  Next, the case 2 of the push switch 200 is manufactured by injection molding using a synthetic resin which is an insulating material, and as shown in FIG. 8, viewed in plan from the upper side (Z1 side shown in FIG. 8) The outer shape is formed in a rectangular shape, and the outer shape is formed in a box shape having a housing portion 2s opened at one end. A space of the housing portion 2s is formed by the inner bottom surface 2b of the case 2 and the side wall 2w erected on the outer periphery of the case 2 so that the movable contact member 10 can be housed. In addition, as a synthetic resin, a dark-colored material such as black, which hardly transmits light, is used.

  Further, as shown in FIG. 8, in the case 2, the first fixed contact member 13 and the second fixed contact member 23 exposed to the housing portion 2 s and the exposed outside of the case 2 are provided. The 1 terminal part 14 and the 2nd terminal part 24 are being fixed. Further, the top surface 2 u of the side wall 2 w located on the upper surface side of the case 2 at the opening side of the housing portion 2 s has a flat shape without a step, and when the sheet member 25 is placed, The upper surface (specifically, the top surface 2u) and the lower surface of the sheet member 25 (the ridge portion 25v described later) come into close contact with each other. Further, step portions 2r recessed downward with respect to the top surface 2u are formed at four corners of the case 2, and an adhesive (not shown) is disposed at the step portions 2r.

  Next, the first fixed contact member 13 and the second fixed contact member 23 of the push switch 200 are made of a conductive metal material, and as shown in FIG. The two second fixed contact members 23 are provided at the outer edge of the inner bottom surface 2b in the longitudinal direction LD.

  Further, as shown in FIG. 8, when the first fixed contact member 13 is provided with three convex portions 13 t projecting upward, and the movable contact member 10 is disposed in the housing portion 2 s of the case 2. The convex portion 13 t is opposed to the top of the bulging portion 11 of the movable contact member 10 so as to be able to be in contact with or separated from the top. Similarly, the two second fixed contact members 23 are provided with two convex portions 23t (four in total) projecting upward, and the movable contact member 10 is accommodated in the housing portion 2s of the case 2 The projection 23 t is in contact with the leg 51 of the movable contact member 10.

  Then, when the bulging portion 11 of the movable contact member 10 repeats the reverse operation, the first fixed contact member 13 (convex portion 13 t) and the top of the bulging portion 11 of the movable contact member 10 repeat contact and separation. Become. On the other hand, the second fixed contact member 23 and the leg 51 of the movable contact member 10 are always kept in contact with each other even if the reversing operation of the bulging portion 11 is repeated. In addition, since the first fixed contact member 13 is provided on the inner bottom surface 2 b which is one step lower than the inner bottom surface 2 b on which the second fixed contact member 23 is provided, the first fixed contact member that contacts and separates with the movable contact member 10 The contact surface 13 is located lower than the contact surface of the second fixed contact member 23 which is always in contact with the movable contact member 10, that is, below the contact surface. This makes it possible to ensure a longer reversing distance, ie, a longer operating stroke, in the movable contact member 10.

  Next, the first terminal portion 14 and the second terminal portion 24 of the push switch 200 are electrically isolated from each other, partially embedded in the case 2, and the end portions are exposed to the outside of the case 2. It is arranged. Further, the first terminal portion 14 is connected to the first fixed contact member 13 in the case 2 (the inner bottom surface 2b), and the second terminal portion 24 is fixed in the second case in the case 2 (the inner bottom surface 2b). It is connected to the contact member 23. The first terminal portion 14 and the second terminal portion 24 allow electrical connection between the push switch 200 and an external device.

  Further, in the second embodiment of the present invention, the first terminal portion 14 and the first fixed contact member 13 are integrally formed, and the second terminal portion 24 and the second fixed contact member 23 are integrally formed. Is formed. The first terminal portion 14 and the first fixed contact member 13 as well as the second terminal portion 24 and the second fixed contact member 23 use metal plates and are manufactured after being subjected to cutting processing, bending processing, etc. It is insert-molded during injection molding of the case 2.

  Next, the sheet member 25 of the push switch 200 is made of a translucent synthetic resin film, and as shown in FIG. 8, it has an outer shape in plan view from the upper side (Z1 direction side shown in FIG. 8). Are formed in a rectangular shape. Further, as shown in FIG. 8, the sheet member 25 includes a dome-shaped dome portion 25 d whose center portion protrudes upward, and a ridge portion 25 v which is formed around the dome portion 25 d and is continuous with the dome portion 25 d. It is done. Further, the sheet member 25 has a size capable of covering the opening of the housing portion 2s in plan view, and is formed so as to substantially match the outer shape of the case 2 It is formed in the shape which fits inside.

  Then, when the push switch 200 is assembled, the sheet member 25 is disposed (placed) on the upper surface side of the case 2 so as to cover the accommodation portion 2s, and the flange portion 25v of the sheet member 25 and the case 2 are Close contact with the top surface 2u. Then, the top surface 2 u of the case 2 is irradiated with laser light from the side of the sheet member 25 so that the top surface 2 u of the case 2 and the flange 25 v of the sheet member 25 are welded to fix the sheet member 25 to the case 2. In that case, an adhesive (not shown) is positioned on the step portions 2r at the four corners of the case 2 on the back surface side of the sheet member 25, and the adhesive is used as the sheet member 25 in the process of laser welding. Play a role of temporary In the second embodiment of the present invention, since the case 2 and the sheet member 25 are welded by irradiating the laser light, the synthetic resin used for the case 2 is a dark color system such as black, which is hard to transmit light. The synthetic resin used for the sheet member 25 is made of a material, and a translucent material that transmits laser light is used.

  Finally, the pusher member 8 of the push switch 200 is made of a material of a dark synthetic resin such as black, which hardly transmits light, and is formed in a hemispherical shape as shown in FIG. Then, the presser member 8 is disposed inside the dome portion 25 d of the sheet member 25, and the sheet member 25 and a part of the hemispherical surface of the presser member 8 are welded to form the presser member 8 as the sheet member 25. It is fixed to The welding is performed by irradiating a laser beam from the side of the sheet member 25 in the same manner as welding of the case 2 and the sheet member 25. Moreover, you may weld by the method of ultrasonic welding, for example by methods other than welding by a laser beam.

  Further, when the push switch 200 is assembled, the pusher member 8 is disposed at a position facing the top of the bulging portion 11 of the movable contact member 10, and the movable contact is received in response to the pressing operation by the operator. The top of the member 10 is configured to be pressed. Since the pusher member 8 is provided, the reversing operation of the movable contact member 10 can be stably and reliably performed.

  The push switch 200 according to the second embodiment of the present invention configured as described above uses the movable contact member 10 according to the first embodiment, and thus is a switch device capable of achieving long life. Because, when the bulging portion 11 of the movable contact member 10 is pressed and reverses, the flip-up portion 11t of the movable contact member 10 suppresses the spread of the bulging portion 11 in the short side direction SD, The concentration of internal stress (tensile stress pulled to the longitudinal direction LD side) at the outer peripheral end S1 in the direction SD is reduced. As a result, defects such as cracks at the outer peripheral end S1 of the movable contact member 10 are reduced. And since the lifetime improvement of this movable contact member 10 is achieved, the lifetime improvement of the push switch 200 can be achieved as a result.

  In addition, since the push switch 200 uses the movable contact member 10 of the first embodiment, the push switch 200 is a switch device capable of achieving longer life. The reason is that when the bulging portion 11 is pressed and reverses, the wave portion 11 w further suppresses the spread of the bulging portion 11 in the short direction SD in addition to the flip-up portion 11 t, and the short direction SD The concentration of the internal stress (tensile stress pulled to the longitudinal direction LD side) at the outer peripheral end S1 is further reduced. As a result, defects such as cracks at the outer peripheral end S1 of the movable contact member 10 are further reduced. And since the lifetime improvement of this movable contact member 10 is further achieved, the lifetime improvement of the push switch 200 can be achieved more as a result.

  In addition, since the push switch 200 uses the movable contact member 10 of the first embodiment, it achieves a long life and reduces the overall width (in the short direction SD) to reduce the size and then performs a longer operation. It is a switch device that can secure a stroke. This is because the movable contact member 10 has the bulging portion 11 with a larger outer diameter and the notch portion 11k is formed in a part of the outer periphery formed on both sides in the short direction SD. In operation, longer motion strokes can be made. On the other hand, when the notch 11k is provided in the bulging portion 11 in the short direction SD, the internal stress (tensile stress) at the outer peripheral end S1 in the short direction SD is applied by the notch 11k. In the second embodiment of the present invention having the flip-up portion 11t in the portion of the notch portion 11k, the concentration of internal stress (tensile stress) in the notch portion 11k can be reliably reduced.

  Hereinafter, the operation of the push switch 200 will be briefly described without using the drawings. First, in the state before operation, the push switch 200 is separated from the top of the movable contact member 10 and the first fixed contact member 13 (convex part 13t), and the leg 51 of the movable contact member 10 and the The two fixed contact members 23 (protrusions 23t) are in contact. Thereby, the first fixed contact member 13 and the second fixed contact member 23 are not electrically connected.

  Next, when a pressing operation is performed by the operator, the movable contact member 10 is pressed downward via the sheet member 25 and the presser member 8, and the movable contact member 10 pressed near the top is lowered. After bending, the bulging portion 11 performs a reverse operation. Then, the back surface side of the top of the bulging portion 11 comes into contact with the first fixed contact member 13. Thereby, when the movable contact member 10 and the first fixed contact member 13 are in contact with each other, the first fixed contact member 13 and the second fixed contact member 23 are electrically connected through the movable contact member 10. .

  Next, when the pressing operation by the operator is released, the pressing on the movable contact member 10 is released, and the movable contact member 10 returns to the original dome shape by the repulsive force of the movable contact member 10. Then, the push switch 200 returns to the state before the operation, and the first fixed contact member 13 and the second fixed contact member 23 are not electrically connected. As described above, the push switch 200 is a switch by pressing the movable contact member 10 to switch the electrical connection state between the first fixed contact member 13 and the second fixed contact member 23 (ON / OFF). Act as.

  The effects of the push switch 200 using the movable contact member 10 according to the second embodiment of the present invention configured as described above will be collectively described below.

  The push switch 200 according to the second embodiment of the present invention uses the movable contact member 10 according to the first embodiment, so when the bulging portion 11 of the movable contact member 10 is pressed and turned up, it jumps up The portion 11t reduces the concentration of internal stress (tensile stress pulled toward the longitudinal direction LD) at the outer peripheral end S1 of the movable contact member 10 in the lateral direction SD. For this reason, defects, such as a crack in outer peripheral end S1 of movable contact member 10, can be reduced, and a switch device capable of achieving long life can be provided.

  In addition, since the movable contact member 10 of the first embodiment is used, when the bulging portion 11 is pressed and reversed, the wave portion 11 w bulges in the short direction SD in addition to the flip-up portion 11 t. The spread of the portion 11 is further suppressed, and the concentration of internal stress (tensile stress pulled to the longitudinal direction LD side) at the outer peripheral end S1 in the short direction SD is further reduced. For this reason, defects, such as a crack in outer peripheral end S1 of movable contact member 10, can be further reduced, and a switch device capable of achieving longer life can be provided.

  In addition, since the movable contact member 10 of the first embodiment is used, the entire width can be obtained by the configuration of the bulging portion 11 having a larger outer shape and the notch portion 11k formed on a part of the outer periphery in the lateral direction SD. (Short direction SD) The size is reduced to a smaller size and a longer operation stroke is secured, and concentration of internal stress (tensile stress) in the notch 11k is reliably reduced at the flip-up portion 11t. Therefore, it is possible to provide a switch device capable of prolonging the life by reducing defects such as cracks at the outer peripheral end S1 in the short direction SD while securing a longer operation stroke.

Third Embodiment
Next, a sheet switch 300, which is a switch device using the movable contact member 10 according to the first embodiment of the present invention, will be described. FIG. 9 is a perspective view of a seat switch 300 according to a third embodiment of the present invention. FIG. 10 is a view for explaining a seat switch 300 according to the third embodiment of the present invention, and FIG. 10 (a) is a top view of the seat switch 300 seen from the Z1 side shown in FIG. 10 (b) is a side view of the seat switch 300 seen from the X1 side shown in FIG. Fig.11 (a) is sectional drawing in the XI-XI line shown to Fig.10 (a), FIG.11 (b) is sectional drawing in the XII-XII line shown to Fig.10 (a). FIG. 12 is a rear view of the sheet member 35 viewed from the Z2 side of the P portion shown in FIG. In addition, in FIG. 12, the state in which the movable contact member 10 was hold | maintained is shown. 13 (a) is a top view of the sheet substrate 9 viewed from the Z1 side of the P portion shown in FIG. 10 (a), and FIG. 13 (b) is the Z2 side of the Q portion shown in FIG. It is a bottom view of sheet substrate 9 seen from the top. About the same composition as a 1st embodiment, the same numerals are attached and detailed explanation is omitted.

  The sheet switch 300 according to the third embodiment of the present invention has a rectangular, sheet-like appearance as shown in FIGS. 9 and 10, and as shown in FIG. A sheet member 35 holding the movable contact member 10, a sheet substrate 9 disposed opposite to the sheet member 35, and a first fixed contact member 33 and a second fixed member provided on one surface 9a of the sheet substrate 9 A second terminal portion 44 electrically connected to the second fixed contact member 43. The first terminal portion 34 (see FIG. 13B) electrically connected to the contact member 43, the first fixed contact member 33, and the second terminal portion 44 electrically connected to the second fixed contact member 43. (Refer FIG.13 (b)), and is comprised. When the sheet switch 300 is assembled, the plurality of movable contact members 10 are held by the sheet member 35 so that the movable contact members 10 and the first fixed contact member 33 and the second fixed contact member 43 face each other. Then, the sheet member 35 is attached to the sheet substrate 9. In the third embodiment of the present invention, twenty first fixed contact members 33, second fixed contact members 43, and twenty movable contact members 10 are provided.

  Next, each configuration described above will be described in detail. First, the movable contact member 10 of the sheet switch 300 uses the movable contact member 10 described in detail in the first embodiment, and as shown in FIG. 1, the central portion is directed upward (Z1 direction shown in FIG. 1). It comprises a bulging portion 11 bulging in a dome shape, and two leg portions 51 provided on both ends facing each other across the bulging portion 11 and supporting the bulging portion 11.

  As shown in FIG. 3, the movable contact member 10 is provided with flip-up portions 11 t extended along the longitudinal direction LD at both ends in the lateral direction SD. When viewed in a longitudinal cross section along the lateral direction SD, the flip-up portion 11t bulges the bulging portion 11 with respect to the virtual ridge line KL of the bulging portion 11 (see FIG. 3B). It is bent to the When the movable contact member 10 is pressed by the bulging portion 11 by the pressing operation of the operator, the bulging portion 11 is reversely operated, and when the pressing is released, the movable contact member 10 returns to the state before the pressing operation. ing.

  As a result, when the bulging portion 11 is pressed and turned upside down, the bounce-up portion 11t suppresses the spread of the bulging portion 11 in the short direction SD. For this reason, concentration of internal stress (tensile stress pulled to the longitudinal direction LD side) at the outer peripheral end S1 in the short direction SD can be reduced. As a result, defects such as cracks at the outer peripheral end S1 in the short direction SD can be reduced, and a long life can be achieved.

  Further, as shown in FIG. 3B, the movable contact member 10 is provided with a wave portion 11w formed in a wave shape in a longitudinal cross section of the short direction SD as shown in FIG. 3B. The wave portion 11 w is extended along the longitudinal direction LD and is extended to the two leg portions 51 so as to extend to the outer peripheral end L 1 of the leg portion 51.

  As a result, when the bulging portion 11 is pressed and turned over, in addition to the flip-up portion 11t, the wave portion 11w further suppresses the spread of the bulging portion 11 in the short direction SD. For this reason, concentration of internal stress (tensile stress pulled to the longitudinal direction LD side) at the outer peripheral end S1 in the short direction SD can be further reduced. As a result, defects such as cracks at the outer peripheral end S1 in the short direction SD can be further reduced, and a longer life can be achieved. In the sheet switch 300 according to the third embodiment of the present invention, since the movable contact member 10 described in detail in the first embodiment is used, the detailed description of the movable contact member 10 will be omitted.

  Next, the sheet member 35 of the sheet switch 300 is manufactured by laminating sheet materials of synthetic resin, and as shown in FIG. 12, a circular-shaped through which can be accommodated up to the leg 51 of the movable contact member 10. A spacer 5S having a plurality of holes, a circular holding sheet 5H for holding the movable contact member 10, and a cover sheet 5C covering the spacer 5S and the holding sheet 5H are configured. The sheet member 35 is mounted on the sheet substrate 9 such that the inner side surface (concave surface) of the movable contact member 10 faces the one surface 9 a of the sheet substrate 9.

  The spacer 5S of the sheet member 35 is formed into a sheet by injection molding using polycarbonate resin (PC, Polycarbonate) or the like, and as shown in FIG. 12, the circular through holes and the through holes described above are And a connected through hole. The through hole is a relief hole of the gas (air) pushed out by the reversal of the movable contact member 10. Further, an adhesive layer (not shown) is provided on the spacer 5S, and the spacer 5S is attached to the sheet substrate 9 by the adhesive layer.

  The holding sheet 5H of the sheet member 35 uses a film material provided with an adhesive layer (not shown) such as polyethylene terephthalate resin (PET, polyethylene terephthalate) or the like on one side, and is circular and larger than the movable contact member 10 It is manufactured in the outer shape. The plurality of holding sheets 5H corresponding to the plurality of movable contact members 10 are respectively disposed above the movable contact members 10 (in the Z1 direction shown in FIG. 11) as shown in FIG. The contact member 10 is held.

  The cover sheet 5C of the sheet member 35 uses a film material such as polyethylene terephthalate resin (PET), and as shown in FIG. 11, it is drawn to have a circular shape and a dome shape larger than the movable contact member 10 Is made and produced. Moreover, the adhesive layer which is not shown in figure is provided in the single side | surface of 5 C of cover sheets. Then, as shown in FIG. 11, the cover sheet 5C is disposed above the spacer 5S and the holding sheet 5H (Z1 direction shown in FIG. 11), and is adhered to the spacer 5S and the holding sheet 5H by this adhesive layer. There is. As a result, the movable contact member 10 is held between the sheet member 35 and the sheet substrate 9.

  Next, the sheet substrate 9 of the sheet switch 300 uses a so-called double-sided printed wiring board (PWB, printed wiring board) having a wiring pattern on both sides, as shown in FIG. The first fixed contact member 33 and the second fixed contact member 43 are provided on the one surface 9a side, and as shown in FIG. 13B, on the other surface 9z side, the first terminal portion 34 and the first terminal portion 34 are provided. A two-terminal portion 44 is provided. Note that as the sheet substrate 9, flexible printed circuits (FPC) may be used on both sides.

  Next, the first fixed contact member 33 and the second fixed contact member 43 of the sheet switch 300 are formed using a part of the sheet substrate 9, and as shown in FIG. A combination of an elliptical pattern which is the member 33 and a horseshoe-shaped pattern which is the second fixed contact member 43 is provided corresponding to the plurality of movable contact members 10 respectively. Then, when the sheet member 35 is mounted on the sheet substrate 9, the first fixed contact member 33 is disposed so as to be capable of coming into and coming out of contact with the top of the bulging portion 11 of the movable contact member 10, and the second fixed contact A member 43 is disposed in contact with the leg 51 of the movable contact member 10. Thereby, when the bulging part 11 of the movable contact member 10 repeats the reverse operation, the contact between the first fixed contact member 33 and the top of the bulging part 11 of the movable contact member 10 is repeated. On the other hand, the second fixed contact member 43 and the leg portion 51 of the movable contact member 10 are always kept in contact with each other even if the reverse operation of the bulging portion 11 is repeated.

  Finally, the first terminal portion 34 and the second terminal portion 44 of the sheet switch 300 are formed so as to be electrically insulated from each other by using a part of the sheet substrate 9, as shown in FIG. And the other surface 9z of the sheet substrate 9 is provided. Although not shown in detail, the first terminal portion 34 is connected to the first fixed contact member 33 by the through hole 9 h provided in the sheet substrate 9, and the second terminal portion 44 is connected to the second fixed contact member 33. The fixed contact member 43 is connected. The first terminal portion 34 and the second terminal portion 44 allow electrical connection between the seat switch 300 and an external device.

  Since the sheet switch 300 of the third embodiment of the present invention configured as described above uses the movable contact member 10 of the first embodiment, it is a switch device capable of achieving a long life. Because, when the bulging portion 11 of the movable contact member 10 is pressed and reverses, the flip-up portion 11t of the movable contact member 10 suppresses the spread of the bulging portion 11 in the short side direction SD, The concentration of internal stress (tensile stress pulled to the longitudinal direction LD side) at the outer peripheral end S1 in the direction SD is reduced. As a result, defects such as cracks at the outer peripheral end S1 of the movable contact member 10 are reduced. And since the lifetime improvement of this movable contact member 10 is achieved, the lifetime improvement of the sheet switch 300 can be achieved as a result.

  Further, since the sheet switch 300 uses the movable contact member 10 of the first embodiment, the sheet switch 300 is a switch device capable of achieving longer life. Because, when the bulging portion 11 is pressed and turned over, in addition to the flip-up portion 11t, the wave portion 11w (see FIG. 3) further suppresses the spread of the bulging portion 11 in the lateral direction SD. Thus, the concentration of internal stress (tensile stress pulled toward the longitudinal direction LD) at the outer peripheral end S1 in the short direction SD is further reduced. As a result, defects such as cracks at the outer peripheral end S1 of the movable contact member 10 are further reduced. And since the lifetime improvement of this movable contact member 10 is further achieved, the lifetime improvement of the sheet switch 300 can be achieved more as a result.

  Hereinafter, the operation of the seat switch 300 will be briefly described without using the drawings. First, in the state before the operation, the seat switch 300 separates the top of the movable contact member 10 from the first fixed contact member 33, and the leg 51 of the movable contact member 10 and the second fixed contact member 43. Is in contact. Thereby, the first fixed contact member 33 and the second fixed contact member 43 are not electrically connected.

  Next, when a pressing operation is performed by the operator, the movable contact member 10 is pressed downward via the sheet member 35, and the movable contact member 10 pressed near the top is bent downward and then expanded. The output unit 11 performs the reverse operation. Then, the back surface side of the top of the bulging portion 11 comes into contact with the first fixed contact member 33. Thereby, when the movable contact member 10 and the first fixed contact member 33 come into contact with each other, the first fixed contact member 33 and the second fixed contact member 43 are electrically connected through the movable contact member 10. .

  Next, when the pressing operation by the operator is released, the pressing on the movable contact member 10 is released, and the movable contact member 10 returns to the original dome shape by the repulsive force of the movable contact member 10. Then, the sheet switch 300 returns to the state before the operation, and the first fixed contact member 33 and the second fixed contact member 43 are not electrically connected. As described above, the sheet switch 300 is a switch by pressing the movable contact member 10 and switching the electrical connection between the first fixed contact member 33 and the second fixed contact member 43 (ON / OFF). Act as.

  The effects of the sheet switch 300 using the movable contact member 10 according to the third embodiment of the present invention configured as described above will be collectively described below.

  Since the sheet switch 300 according to the third embodiment of the present invention uses the movable contact member 10 of the first embodiment, when the bulging portion 11 of the movable contact member 10 is pressed and inverted, the movable contact is Concentration of internal stress (tensile stress pulled to the longitudinal direction LD side) at the outer peripheral end S1 in the short direction SD of the member 10 can be reduced, and defects such as cracks at the outer peripheral end S1 are reduced to prolong the life It is possible to provide a switch device that can be designed.

  In addition, since the movable contact member 10 of the first embodiment is used, when the bulging portion 11 of the movable contact member 10 is pressed and reverses, the wave portion 11w is short in addition to the flip-up portion 11t. The spread of the bulging portion 11 in the direction SD is further suppressed, and the concentration of internal stress (tensile stress pulled toward the longitudinal direction LD) at the outer peripheral end S1 in the short direction SD is further reduced. For this reason, defects, such as a crack in outer peripheral end S1 of movable contact member 10, can be further reduced, and a switch device capable of achieving longer life can be provided.

  The present invention is not limited to the above embodiment, and can be implemented, for example, as follows, and these embodiments also fall within the technical scope of the present invention.

  FIG. 14 is a view for explaining a modification of the movable contact member 10 according to the first embodiment of the present invention, and FIG. 14 (a) is a top view of the movable contact member C10 of the modification 2 14 (b) is a top view of the movable contact member D10 of Modification 3. FIG.

<Modification 1>
In the first embodiment, the bounce-up portion 11t and the wave portion 11w are suitably combined, but sufficient effects can be achieved even with only the bounce-up portion 11t.

<Modification 2>
In the first embodiment, the two leg portions 51 are provided on the side facing each other across the bulging portion 11. However, the present invention is not limited to this. For example, as shown in FIG. The configuration may be such that two legs C51 and four legs C51 in total are provided on the side facing each other with the protrusion 11 interposed therebetween, or a configuration in which the number is greater than that may be provided.

<Modification 3>
In the first embodiment, the bulging portion 11 is preferably configured to have the notch 11k, but for example, as shown in FIG. 14B, the outer side of the bulging portion D11 on the side of the short side SD The side part D71 may be provided in the structure, and the structure which does not provide the notch part 11k may be sufficient. At that time, the flip-up portion 11t is provided on the side portion D71.

<Modification 4><Modification5>
In the second embodiment, in order to stably and reliably perform the reversing operation of the movable contact member 10, the presser member 8 is suitably used. However, a configuration not necessarily used may be used (Modified Example 4). Further, an operation member operated by the operator may be provided above the sheet member 25 (Modification 5).

<Modification 6>
In the third embodiment, the first fixed contact member 33, the second fixed contact member 43, and the movable contact member 10 are each provided with 20 pieces, but the number is not limited to this number. Also good.

<Modification 7>
In the third embodiment, the fixed contact is constituted by the combination of the first fixed contact member 33 of the elliptical pattern and the second fixed contact member 43 of the horseshoe-shaped pattern. However, the present invention is not limited to this. The fixed contact may be configured by a combination of the shape pattern and the circular pattern.

<Modification 8>
As a switch device using the movable contact member 10 according to the first embodiment of the present invention, the push switch 200 in the second embodiment and the sheet switch 300 in the third embodiment are described in detail as an example. It is not limited to For example, as a switch device, a slide switch or a seesaw switch may be used.

  The present invention is not limited to the above embodiment, and can be modified as appropriate without departing from the scope of the object of the present invention.

10, C10, D10 Movable contact member 11, D11 bulging part 11t Jumping part 11k Notched part 11w Wave part 51, C51 Leg part 91 Connecting part 13, 33 1st fixed contact member 23, 43 2nd fixed contact member 14, 34 1st terminal part 24, 44 2nd terminal part 200 Push switch 300 Sheet switch B1 Base member C1 Bending member D1 Drawing member P1 Outer shape processing process P2 Bending process P22 Wave bending process P3 Drawing process P4 Cutting process LD Longitudinal direction SD Short side direction

Claims (8)

A movable contact member having an outer shape having a latitudinal direction and a longitudinal direction, including a bulging portion capable of being reversely operated by a dome-like bulging pressure and a plurality of leg portions supporting the bulging portion. There,
At least one of the plurality of leg portions is provided on each side opposite to the other across the bulging portion in the longitudinal direction in plan view;
At both end portions in the short side direction, there is a flip-up portion bent to the bulging side in a longitudinal cross-sectional view along the short side direction,
A movable contact member characterized in that the flip-up portion extends along the longitudinal direction. The bulging portion has a wave portion formed in a wave shape in a longitudinal sectional view of the short side direction,
The movable contact member according to claim 1, wherein the wave portion is extended along the longitudinal direction.   The movable contact member according to claim 1 or 2, wherein the bulging portion has a notch that forms a part of an outer periphery in the lateral direction. 4. The external shape according to any one of claims 1 to 3 , wherein an outer shape when viewed in plan from the bulging portion side is formed in line symmetry on both sides of a center portion in the short side direction. Movable contact member. A movable contact member having a bulging portion capable of being reversely operated by a dome-like bulging pressure and a plurality of leg portions supporting the bulging portion, and having an outer shape having a lateral direction and a longitudinal direction. Manufacturing method of
An outline processing step of forming a plate-like base member having the short direction and the longitudinal direction while leaving a connecting part from a sheet-like metal material;
A bending process step of bending both end portions in the short direction to one side along the longitudinal direction with respect to the base member to form a bending member;
The squeeze member is formed by squeezing the bent member so as to expand in the dome shape toward the one side centering on the central portion in the lateral direction and the longitudinal direction in plan view Drawing process,
A cutting process step of cutting the connecting part connected to the drawing processing member according to the outer shape,
In the drawing process, the bulging portion is formed, and the flip-up portion bent to the bulging side is extended along the longitudinal direction and formed at both ends in the lateral direction. A manufacturing method of a movable contact member characterized by things.   The movable contact according to claim 5, wherein the bending step includes a wave bending step of bending along the longitudinal direction so that the short direction is viewed in a longitudinal cross section to be uneven. Method of manufacturing a member   The manufacturing method of the movable contact member according to claim 5 or 6, wherein the connecting portion is provided in connection with the leg portion in the outer shape processing step. A movable contact member according to any one of claims 1 to 4;
A first fixed contact member capable of coming in and out of contact with the top of the bulging portion of the movable contact member;
A second fixed contact member in contact with the leg of the movable contact member;
A first terminal portion electrically connected to the first fixed contact member;
And a second terminal portion electrically connected to the second fixed contact member.