US20210125799A1 - Push switch - Google Patents
Push switch Download PDFInfo
- Publication number
- US20210125799A1 US20210125799A1 US17/142,036 US202117142036A US2021125799A1 US 20210125799 A1 US20210125799 A1 US 20210125799A1 US 202117142036 A US202117142036 A US 202117142036A US 2021125799 A1 US2021125799 A1 US 2021125799A1
- Authority
- US
- United States
- Prior art keywords
- contact point
- push switch
- mounting board
- fixed contact
- substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/86—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the casing, e.g. sealed casings or casings reducible in size
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/04—Cases; Covers
- H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
- H01H13/52—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state immediately upon removal of operating force, e.g. bell-push switch
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/88—Processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
- H04M1/236—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof including keys on side or rear faces
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2205/00—Movable contacts
- H01H2205/004—Movable contacts fixed to substrate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2207/00—Connections
- H01H2207/02—Solder
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2223/00—Casings
- H01H2223/002—Casings sealed
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2225/00—Switch site location
- H01H2225/028—Switch site location perpendicular to base of keyboard
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2229/00—Manufacturing
- H01H2229/04—Solder problems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2231/00—Applications
- H01H2231/022—Telephone handset
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2231/00—Applications
- H01H2231/024—Dispensing machine
Definitions
- the present disclosure relates to a push switch suitable for, e.g., an operation button of a mobile phone.
- Japanese Unexamined Patent Publication (Kokai) No. 2004-079220 discloses a push switch which is formed by plate-like components such as a spacer and a substrate stacked in layers and is mounted at an end of a mounting board.
- the push switch disclosed in Japanese Unexamined Patent Publication (Kokai) No. 2004-079220 includes a step formed on the substrate constituting the push switch and is mounted to make the step abut against the upper surface of the mounting board.
- FIG. 20 is a schematic sectional view illustrating a push switch 2000 according to the conventional technique as mounted on a mounting board.
- the push switch 2000 includes a substrate 2010 , a pressing member 2040 , and a case 2050 and is mounted on a mounting board 1000 .
- the substrate 2010 includes a first surface 2011 , a second surface 2012 , a third surface 2013 , a fourth surface 2014 , and a corner 2015 .
- the third surface 2013 , the fourth surface 2014 , and the corner 2015 form a step 2017 which functions as an attachment portion to be attached to the mourning board 1000 when the push switch 2000 is mounted on the mounting board 1000 .
- the third surface 2013 extends from the second surface 2012 to the corner 2015 in a direction perpendicular to the first surface 2011 and the second surface 2012 .
- the fourth surface 2014 extends from the corner 2015 parallel to the first surface 2011 .
- the step 2017 is formed by cutting the substrate 2010 using a rotating tool.
- the corner 2015 located between the third surface 2013 and the fourth surface 2014 is formed by cutting the step 2017 using a rotating tool and therefore has a rounded (R) shape.
- the case 2050 movably supports the pressing member 2040 in its opening.
- the push switch 2000 is turned on.
- the push switch 2000 is OFF.
- the third surface 2013 comes into contact with a front surface 1001 of the mounting board 1000
- the fourth surface 2014 faces a side surface 1002 of the mounting board 1000 .
- the corner 2015 is formed into an R shape.
- the fourth surface 2014 of the push switch 2000 and the side surface 1002 of the mounting board 1000 do not come into contact with each other, but they are spaced apart from each other by a separation distance d g . It is, therefore, difficult to appropriately transmit a pressing force applied to the push switch 2000 upon depression to the mounting hoard 1000 .
- a push switch includes a substrate having a first surface on which a first fixed contact point and a second fixed contact point surrounding the first fixed contact point are formed, a second surface located opposite to the first surface, a third surface extending from the second surface to a corner in a direction perpendicular to the first surface, and a fourth surface extending from the corner parallel to the first surface, and a conductive movable contact point having a peripheral edge of the movable contact point which is in contact with the second fixed contact point, and a center of the movable contact point contacted by the first fixed contact point when the movable contact point is pressed, wherein the corner has a groove recessed with respect to at least one of the third surface and the fourth surface.
- the groove is preferably recessed with respect to the third surface.
- the groove preferably has a length from the fourth surface to the second surface larger than a depth of a recess of the groove from the third surface.
- the groove is preferably recessed with respect to the fourth surface.
- the corner preferably includes a plurality of grooves along a line of intersection between the third surface and the fourth surface.
- the push switch preferably further includes a recess which is formed in a region of the fourth surface spaced apart from a line of intersection between the third surface and the fourth surface by not less than a predetermined distance and is recessed with respect to the fourth surface.
- a push switch includes a substrate having a first surface on which a first fixed contact point and a second fixed contact point surrounding the first fixed contact point are formed, a second surface located opposite to the first surface, a third surface extending from the second surface to a corner in a direction perpendicular to the first surface, and a fourth surface extending from the corner parallel to the first surface, a conductive movable contact point having a peripheral edge of the movable contact point which is in contact with the second fixed contact point, and a center of the movable contact point contacted by the first fixed contact point when the movable contact point is pressed, and a metal member formed in a region spaced apart from a line of intersection between the third surface and the fourth surface by not less than a predetermined distance and protruding from the third surface or the fourth surface.
- a push switch is provided as a push switch mountable on a mounting board, the switch including a substrate having a first surface on which a first fixed contact point and a second fixed contact point surrounding the first fixed contact point are formed, a second surface located opposite to the first surface, a third surface extending from the second surface to a corner in a direction perpendicular to the first surface, and a fourth surface extending from the corner parallel to the first surface, a conductive movable contact point having a peripheral edge of the movable contact point which is in contact with the second fixed contact point, and a center of the movable contact point contacted by the first fixed contact point when the movable contact point is pressed, and an engagement projection formed on the third surface or the fourth surface and engageable with an engagement recess formed in the mounting board.
- a height of the engagement projection formed on the fourth surface from the fourth surface is preferably greater than a depth of the engagement recess formed in the mounting board.
- the engagement projection formed on the third surface is preferably located at a position having a distance from the fourth surface larger than a distance from an end mounted with the push switch on the mounting board to the engagement recess.
- a push switch includes a substrate having, a first surface on which a first fixed contact point and a second fixed contact point surrounding the first fixed contact point are formed, a second surface located opposite to the first surface, a third surface extending from the second surface to a corner in a direction perpendicular to the first surface, and a fourth surface extending from the corner parallel to the first surface, a conductive movable contact point having a peripheral edge of the movable contact point which is in contact with the second fixed contact point, and a center of the movable contact point contacted by the first fixed contact point when the movable contact point is pressed, and a frame in contact with the substrate on the second surface of the substrate, wherein the frame has a side surface protrusion protruding from at least one of the third surface and the fourth surface, on a side surface perpendicular to the second surface and the third surface.
- the push switch according to the present disclosure can have a small separation distance from a side surface of a mounting board, when it is mounted on the mounting board through a step.
- FIG. 1A is a perspective view illustrating a push switch 1 according to a first embodiment when viewed from the upper front right
- FIG. 1B is a perspective view illustrating the push switch 1 according to the first embodiment when viewed from the upper rear left;
- FIG. 2 is a schematic view illustrating the push switch 1 according to the first embodiment in a cross section A-A′;
- FIG. 3 is a schematic rear view illustrating the push switch 1 according to the first embodiment:
- FIG. 4A is a plan view of a first surface 191 illustrated in FIG. 2
- FIG. 4B is a plan view of a second surface 102 illustrated in FIG. 2 ;
- FIG. 5A is a view for explaining a first step in a process for forming a step as illustrated in FIG. 2
- FIG. 5B is a view for explaining a second step in the process for forming a step as illustrated in FIG. 2 ;
- FIG. 6 is a schematic sectional view illustrating a push switch 2 according to a first modification to the first embodiment
- FIG. 7 is a schematic sectional view illustrating a push switch 3 according to a second modification to the first embodiment
- FIG. 8 is a schematic rear view illustrating a push switch 4 according to a third modification to the first embodiment
- FIG. 9 is a schematic sectional view illustrating a push switch 5 according to a fourth modification to the first embodiment
- FIG. 10 is a schematic rear view illustrating the push switch 5 according to the fourth modification to the first embodiment
- FIG. 11 is a schematic sectional view illustrating a push switch 6 according to a second embodiment
- FIG. 12 is a schematic sectional view illustrating a push switch 6 ′ according to a modification to the second embodiment
- FIG. 13 is a schematic sectional view illustrating a push switch 7 according to a third embodiment
- FIG. 14 is a schematic sectional view illustrating a push switch 7 ′ according to a modification to the third embodiment
- FIG. 15A is a perspective view illustrating a push switch 8 according, to a fourth embodiment when viewed from the upper front right
- FIG. 15B is a perspective view illustrating the push switch 8 according to the fourth embodiment when viewed from the upper rear left;
- FIG. 16A is a perspective view illustrating the push switch 8 according to the fourth embodiment before a frame is attached, when viewed from the upper front right
- FIG. 16B is a perspective view illustrating the push switch 8 according to the fourth embodiment before the frame is attached, when viewed from the upper rear left;
- FIG. 17 is a side view illustrating the push switch 8 according to the fourth embodiment when viewed from the right of the front side;
- FIG. 18 is a top view illustrating the push switch 8 according to the fourth embodiment when viewed from above;
- FIG. 19 is a side view illustrating a push switch 8 ′ according to a modification to the fourth embodiment when viewed from the right of the front side;
- FIG. 20 is a schematic sectional view illustrating a push switch 2000 according to the conventional technique as mounted on a circuit board.
- FIG. 1A is a perspective view illustrating a push switch f according to a first embodiment when viewed from the upper front right
- FIG. 1B is a perspective view illustrating the push switch 1 when viewed from the upper rear left
- FIG. 2 is a schematic view illustrating the push switch in a cross section A-A′
- FIG. 3 is a schematic, rear view illustrating the push switch 1
- FIG. 2 is a schematic view in a cross section B-B′ in FIG. 3 .
- the cross section A-A′ is a plane along which the push switch 1 is cut on a diagonal line passing through the upper right corner and the lower left corner of the push switch 1 as viewed in the forward direction.
- the push switch 1 includes a substrate 10 , a movable contact point 11 , a spacer 12 , a waterproof sheet 13 , a pressing member 14 , and a case 15 .
- the substrate 10 is made of a resin such as glass epoxy and includes a first surface 101 , a second surface 102 , a third surface 103 , a fourth surface 104 , and a corner 105 ,
- the third surface 103 , the fourth surface 104 , and the corner 105 form a step 107 which functions as an attachment portion to be attached to a mounting board 1000 when the push switch 1 is mounted on the mounting board 1000 .
- FIG. 4A is a plan view of the first surface 101 illustrated in FIG. 2
- FIG. 48 is a plan view of the second surface 102 illustrated in FIG. 2 .
- the first surface 101 is a rectangular flat surface
- the spacer 12 adheres to the first surface 101 along its outer edge
- a first fixed contact point 111 and a second fixed contact point 112 are formed on the first surface 101 in a region surrounded by the spacer 12 .
- the first fixed contact point 111 is a circular conductive member formed near the center
- the second fixed contact point 112 is a frame-shaped conductive member surrounding the first fixed contact point 111 .
- the first fixed contact point 111 and the second fixed contact point 112 are made of, e.g., copper.
- the second surface 102 is a rectangular flat surface located opposite to the first surface 101 and facing in the direction opposite to the first surface 101 .
- the second surface 102 is equipped with external terminals 120 .
- the external terminals 120 include a first external terminal 121 connected to the first fixed contact point 111 through a first via 123 and a first wiring line 125 , and a second external terminal 122 connected to the second fixed contact point 112 through a second via 124 and a second wiring line 126 .
- the first via 123 and the second via 124 connect the contact points formed on the first surface 101 to the wiring lines formed in the second surface 102 .
- the first via 123 and the second via 124 are formed by arranging conductors in holes running through a substrate by, e.g., plating.
- the first via 123 is connected to the first fixed contact point Ill and the first wiring line 125
- the second via 124 is connected to the second fixed contact point 112 and the second wiring line 126 .
- the first wiring line 125 and the second wiring line 126 are conductors such as copper foil formed on the front surface of the substrate 10 .
- the first wiring line 125 connects the first external terminal 121 to the first via 123
- the second wiring line 126 connects the second external terminal 122 to the second via 124 .
- the third surface 103 is a rectangular flat surface formed between the first surface 101 and the second surface 102 .
- the third surface 103 extends from the second surface 102 to the corner 105 in a direction perpendicular to the first surface 101 and the second surface 102 ,
- the third surface 103 comes into contact with a front surface 1001 of the mounting board 1000 when the push switch 1 is mounted on the mounting hoard 1000 .
- the fourth surface 104 is a rectangular flat surface formed between the first surface 101 and the second surface 102 and facing in the direction opposite to the first surface 101 .
- the fourth surface 104 extends from the corner 105 in a direction perpendicular to the third surface 103 , a direction parallel to the first surface 101 and the second surface 102 .
- the fourth surface 104 comes into contact with a side surface 1002 of the mounting board 1000 when the push switch 1 is mounted on the mounting board 1000 .
- the corner 105 includes a groove 106 recessed with respect to the fourth surface 104 .
- the corner 105 is formed as a recess having a semicircular cross section ranging from the right end to the left end of the upper side of the fourth surface 104 , when the corner 105 illustrated in FIG. 2 is viewed from the right.
- FIGS. 5A and 58 are views far explaining: a process for forming a step as illustrated in FIG. 2 , in which FIG. 5A illustrates a first step, and FIG. 5B illustrates a second step.
- a dicing saw (not illustrated) cuts a nearly rectangular parallelepiped substrate 3000 across a length L 1 in a direction perpendicular to the first surface 101 , from the surface of the substrate 3000 opposite to the first surface 101 .
- the dicing saw cuts the substrate 3000 from the vicinity of the lower end of the external terminal 120 .
- the length L 1 is the sum of a depth D 3 of the third surface 103 and a depth d 6 of the groove 106 .
- the width cut by the dicing saw corresponds to a width w 6 of the groove 106 .
- the dicing saw cuts the substrate 3000 across a length L 2 in a direction parallel to the first surface 101 , from a surface perpendicular to the first surface 101 of the substrate 3000 and opposite to that on which the external terminal 120 is not placed of the surfaces formed by cutting in the first step.
- the dicing saw forms a substrate 10 by isolating a cut material 3010 from the substrate 3000 .
- the dicing saw cuts the substrate 3000 to set the dimension of the third surface 103 in the depth direction to D 3 .
- the length L 2 is the sum of a height H 4 of the fourth surface and the width w 6 of the groove 106 .
- the movable contact point 11 is made of an elastic conductive member such as stainless steel and brass formed into a thin dome shape.
- the movable contact point 11 may be formed into, e.g., a barrel shape having opposed sides and formed by cutting a convex dome-shaped leaf spring member.
- the movable contact point 11 may also have a circular shape and other dome shapes.
- the movable contact point 11 includes a peripheral edge 113 and a center 114 .
- the peripheral edge 113 of the movable contact point 11 is at least partially in contact with the second fixed contact point 112 .
- the center 114 of the movable contact point 11 is spaced apart from the first fixed contact point 111 when the pressing member 14 is not depressed.
- the first external terminal 121 connected to the first fixed contact point 111 and the second external terminal 122 connected to the second fixed contact point 112 are not electrically connected to each other. In this case, the push switch 1 is OFF.
- the peripheral edge 113 has its edge portions in a horizontal direction in contact with the first surface 101 and its edge portions in a vertical directions not in contact with the first surface 101 .
- the center 114 of the movable contact point 11 moves in the depression direction together with the pressing member 14 and comes into contact with the first fixed contact point 111 .
- the center 114 of the movable contact point 11 comes into contact with the first fixed contact point 111 upon depression of the pressing member 14 , the first external terminal 121 and the second external terminal 122 are electrically connected to each other, and the push switch 1 is turned on.
- the movable contact point 11 elastically returns to its original shape, the center 114 of the movable contact point 11 moves upwards and separates from the first fixed contact point 111 , and the push switch 1 is turned off.
- the spacer 12 is a frame-shaped resin sheet such as a polyimide including an opening hole which can accommodate the movable contact point 11 in its central region.
- the outer frame of the spacer 12 has nearly the same shape as that of the outer periphery of the first surface 101 of the substrate 10 .
- the back surface of the spacer 12 may be fixed by, e.g., bonding to the substrate 10 through an adhesive layer (not illustrated).
- the waterproof sheet 13 is made of a resin such as polyethylene or vinyl chloride and has nearly the same shape as that of the outer periphery of the first surface 101 of the substrate 10 .
- the outer edge of the back surface of the waterproof sheet 13 is bonded to the front surface of the spacer 12 through an adhesive layer (not illustrated).
- the waterproof sheet 13 seals the space to accommodate the movable contact point 11 and prevents the entrance of, e.g., water and foreign particles from the case 15 into the space to accommodate the movable contact point 11 .
- the pressing member 14 is made of a resin such as ABS resin and supported on its periphery by the case 15 . Upon depression of the pressing member 14 , it moves in a depression direction indicated by the arrow X and presses the center 114 of the movable contact point 11 .
- the case 15 is made of a resin such as ABS resin and includes an opening 151 formed in it, into which the pressing member 14 can be inserted.
- the back surface of the case 15 is bonded to the front surface of the waterproof sheet 13 through an adhesive layer (not illustrated).
- the push switch 1 is manufactured by sequentially arranging the substrate 10 , the movable contact point 11 , the spacer 12 , the waterproof sheet 13 , the pressing member 14 , and the case 15 .
- the movable contact point 11 is placed so that the peripheral edge 113 is in contact with the second fixed contact point 112 formed on the first surface 101 .
- the back surface of the waterproof sheet 13 is bonded to the front surface of the spacer 12 .
- the back surface of the case 15 having the pressing member 14 inserted into the opening 151 is bonded to the front surface of the waterproof sheet 13 .
- the push switch 1 can have a small separation distance between the fourth surface 104 and the side surface 1002 of the mounting board 1000 , when it is mounted on the mounting board 1000 , with the corner 105 of the step 107 formed to include a groove 106 recessed with respect to the fourth surface 104 . Hence, the push switch 1 can appropriately transmit a pressing force applied to the push switch 1 upon depression to the mounting board 1000 .
- the push switch 1 can include a step formed by cutting a single substrate, the manufacturing cost can be kept less than when a step is formed by laminating two substrates.
- the dimensional accuracy of the step may degrade due to a shift in position of the substrates upon lamination. Since, however, the push switch 1 includes a step formed by cutting a single substrate, the dimensional accuracy of the step is less likely to degrade.
- FIG. 6 is a schematic sectional view illustrating a push switch 2 according to a first modification to the first embodiment
- FIG. 7 is a schematic sectional view illustrating a push switch 3 according to a second modification to the first embodiment.
- the push switch 2 is different from the push switch 1 in that the former includes a substrate 20 instead of the substrate 10 , Since the structures and functions of components constituting the push switch 2 other than the substrate 20 are the same as those of components constituting the push switch 1 denoted by the same reference numerals, a detailed description thereof will not be given herein.
- the substrate 20 is different from the substrate 10 in that the former includes a corner 205 including a groove 206 recessed with respect to a third surface 203 , instead of the corner 105 .
- the groove 206 is formed by cutting longer than the height of a fourth surface 204 in the second step of forming the fourth surface 204 instead of the first step of forming the third surface 203 , in forming a step 207 .
- the push switch 3 is different from the push switch) in that the former includes a substrate 30 instead of the substrate 10 . Since the structures and functions of components constituting the push switch 3 other than the substrate 30 are the same as those of components constituting the push switch 1 denoted by the same reference numerals, a detailed description thereof will not be given herein.
- the substrate 30 is different from the substrate 10 in that the former includes a corner 305 including a groove 306 recessed with respect to both a third surface 303 and a fourth surface 304 , instead of the corner 105 ,
- the groove 306 is formed by cutting longer than the depth of the third surface 303 in the first step of forming the third surface 303 and cutting longer than the height of the fourth surface 304 in the second step of forming the fourth surface 304 , in forming a step 307 .
- FIG. 8 is a schematic rear view illustrating a push switch 4 according to a third modification to the first embodiment.
- the push switch 4 is different from the push switch 1 in that the former includes a substrate 40 instead of the substrate 10 .
- a schematic view in a cross section C-C′ illustrated in FIG. 8 is similar to that illustrated in FIG. 2 . Since the structures and functions of components constituting the push switch 4 other than the substrate 40 are the same as those of components constituting the push switch 1 denoted by the same reference numerals, a detailed description thereof will not be given herein.
- the substrate 40 is different from the substrate 10 in that the former includes a corner 405 including grooves 406 , instead of the corner 105 .
- the grooves 406 are arranged along the line of intersection between the third surface 103 and the fourth surface 104 . Referring to FIG. 2 , the position of the line of intersection between the third surface 103 and the fourth surface 104 is indicated by a point of intersection 108 between the cross section A-A′ and the line of intersection between the third surface 103 and the fourth surface 104 .
- a plurality of grooves 406 are formed in the push switch 4 at positions corresponding to respective external terminals 420 , as illustrated in FIG. 8 .
- the push switch 4 includes a plurality of grooves 406 at positions corresponding to respective external terminals 420 and therefore achieves improved soldering to a mounting board 1000 .
- FIG. 9 is a schematic sectional view illustrating a push switch 5 according to a fourth modification to the first embodiment.
- FIG. 10 is a schematic rear view illustrating the push switch 5 according to the fourth modification to the first embodiment.
- FIG. 9 is a schematic view in a cross section D-D′ illustrated in FIG. 10 .
- the push switch 5 is different from the push switch 1 in that the former includes a substrate 50 instead of the substrate 10 . Since the strictures and functions of components constituting the push switch 5 other than the substrate 50 are the same as those of components constituting the push switch 1 denoted by the same reference numerals, a detailed description thereof will not be given herein.
- the substrate 50 is different from the substrate 10 in that the former includes a lead frame 58 buried in a third surface 503 .
- the substrate 50 is further different from the substrate 10 in that the former includes a recess 509 recessed with respect to a fourth surface 504 .
- the lead frame 58 is formed in a region spaced apart from the line of intersection between the third surface 503 and the fourth surface 504 by a predetermined distance d h5 or more.
- a groove 506 is formed along the line of intersection between the third surface 503 and the fourth surface 504 .
- the groove 506 includes a region recessed with respect to the third surface 503 and a region recessed with respect to the fourth surface 504 .
- the predetermined distance d h5 is larger than a depth d r5 of the recess of the groove 506 from the third surface 503 , in the groove 506 , the length from the fourth surface 504 to a second surface 502 is the predetermined distance d h5 . Therefore, the groove 506 has a length from the fourth surface 504 to the second surface 502 larger than the depth of the recess of the groove 506 from the third surface 503 .
- the recess 509 is formed in a region of the fourth surface 504 spaced apart from the line of intersection between the third surface 503 and the fourth surface 504 by a predetermined distance d v5 or more.
- the groove 506 of the push switch 5 includes a region recessed with respect to the third surface 503 .
- This structure can set the distance between the external terminals 520 and the groove 506 small in the push switch 5 .
- the push switch 5 has a small distance between the external terminals 520 and the groove 506 and therefore achieves more efficient accommodation of excessive solder and flux in the groove 506 .
- the push switch 5 can be more appropriately soldered to the mounting board 1000 .
- the push switch 5 includes a recess 509 in the fourth surface 504 , even when the mounting board 1000 includes a protrusion such as a burr at the lower end of a side surface 1002 , the protrusion can be accommodated in the recess 509 . Hence, the push switch 5 can be stably positioned with respect to the mounting board 1000 .
- FIG. 11 is a schematic sectional view illustrating a push switch 6 according to a second embodiment.
- the push switch 6 is different from the push switch 1 in that the former includes a substrate 60 instead of the substrate 10 . Since the structures and functions of components constituting the push switch 6 other than the substrate 60 are the same as those of components constituting the push switch 1 denoted by the same reference numerals, a detailed description thereof will not be given herein.
- the substrate 60 is different from the substrate 10 in that the former includes a lead frame 68 protruding from a third surface 603 .
- the lead frame 68 is a metal member formed in a region spaced apart from the line of intersection between the third surface 603 and a fourth surface 604 by a predetermined distance or more.
- the space formed between the lead frame 68 and the fourth surface 604 constitutes a groove 606 .
- the groove 606 may not be recessed with respect to at least one of the third surface 603 and the fourth surface 604 .
- the line of intersection between a virtual third surface obtained by extending the flat portion of the third surface 603 and a virtual fourth surface Obtained by extending the flat portion of the fourth surface 604 can be defined as the line of intersection between the third surface 603 and the fourth surface 604 .
- the position of the line of intersection between the third surface 603 and the fourth surface 604 is indicated by a point of intersection 608 between the cross section A-A′ and the line of intersection between the third surface 603 and the fourth surface 604 .
- the lead frame 68 is formed in a region of the third surface 603 spaced apart from the line of intersection between the third surface 603 and the fourth surface 604 by a predetermined distance d h6 or more.
- the lead frame 68 is connected to the first fixed contact point 111 or the second fixed contact point 112 .
- the lead frame 68 is soldered to a circuit formed on a front surface 1001 of the mounting board 1000 .
- the push switch 6 may include another metal member such as a soldering pattern on the third surface 603 , instead of the lead frame 68 .
- FIG. 12 is a schematic sectional view illustrating a push switch 6 ′ according to a modification to the second embodiment.
- the push switch 6 ′ is different from the push switch 6 in that the former includes a substrate 60 ′ instead of the substrate 60 . Since the structures and functions of components constituting the push switch 6 ′ other than the substrate 60 ′ are the same as those of components constituting the push switch 6 denoted by the same reference numerals, a detailed description thereof will not be given herein.
- the substrate 60 ′ is different from the substrate 60 in that the former includes a lead frame 68 ′ protruding from the fourth surface 604 , instead of the lead frame 6 S protruding from the third surface 603 .
- the lead frame 68 ′ is formed in a region spaced apart from the line of intersection between the third surface 603 and the fourth surface 604 by a predetermined distance or more.
- the space formed between the lead frame 68 ′ and the third surface 603 constitutes a groove 606 ′.
- the groove 606 ′ may not be recessed with respect to at least one of the third surface 603 and the fourth surface 604 .
- the lead frame 68 ′ is formed in a region of the fourth surface 604 spaced apart from the line of intersection between the third surface 603 and the fourth surface 604 by a predetermined distance d v6 or more.
- FIG. 13 is a schematic sectional view illustrating a push switch 7 according to a third embodiment.
- the push switch 7 is different from the push switch 1 in that the former includes a substrate 70 instead of the substrate 10 . Since the structures and functions of components constituting the push switch 7 other than the substrate 70 are the same as those of components constituting the push switch 1 denoted by the same reference numerals, a detailed description thereof will not be given herein.
- the substrate 70 is different from the substrate 10 in that the former includes an engagement projection 730 protruding from a fourth surface 704 .
- the engagement projection 730 can engage with an engagement recess 1030 funned in a side surface 1002 of a mounting board 1000 .
- a height d 71 of the engagement projection 730 from the fourth surface 704 is greater than a depth d 72 of the engagement recess 1030 formed in the mounting board 1000 .
- the engagement projection 730 engages with the engagement recess 1030 when the push switch 7 is mounted on the mounting board 1000 , Hence, the push switch 7 can be accurately placed at a mounting position on the mounting board 1000 .
- the distance between the side surface 1002 of the mounting board 1000 and the fourth surface 704 is not smaller than d 71 ⁇ d 72 .
- the space formed among the side surface 1002 of the mounting board 1000 , the fourth surface 704 , and the engagement projection 730 constitutes a groove 706 .
- the groove 706 may not be recessed with respect to a third surface 703 and the fourth surface 704 ,
- FIG. 14 is a schematic sectional view illustrating a push switch 7 according to a modification to the third embodiment.
- the push switch 7 ′ is different from the push switch 7 in that the former includes a substrate 70 ′ instead of the substrate 70 . Since the structures and functions of components constituting the push switch 7 ′ other than the substrate 70 ′ are the same as those of components constituting the push switch 7 denoted by the same reference numerals, a detailed description thereof will not be given herein.
- the substrate 70 ′ is different from the substrate 70 in that the former includes an engagement projection 730 ′ protruding from the third surface 703 .
- the engagement projection 730 ′ can engage with an engagement recess 1030 ′ formed in a front surface 1001 of a mounting board 1000 .
- the push switch 7 ′ is mounted so that the fourth surface 704 of the push switch 7 ′ faces a side surface 1002 , i.e., an end of the mounting board 1000 .
- the engagement projection 730 ′ is formed at a position having a distance d 73 from the fourth surface 704 larger than a distance d 74 from the side surface 1002 of the mounting board 1000 to the engagement recess 1030 ′.
- the distance between the side surface 1002 of the mounting board 1000 and the fourth surface 704 is not smaller than d 73 ⁇ d 74 .
- the space formed between the side surface 1002 of the mounting board 1000 and the fourth surface 704 constitutes a groove 70 C.
- the groove 706 may not be recessed with respect to the third surface 703 and the fourth surface 704 .
- FIGS. 15A and 15B are perspective views illustrating a push switch 8 according to a fourth embodiment.
- FIG. 15A is a perspective view illustrating the push switch 8 when viewed from the upper front right
- FIG. 15B is a perspective view illustrating the push switch 8 when viewed from the upper rear left
- FIGS. 16A and 16B are perspective views illustrating the push switch 8 according to the fourth embodiment before a frame is attached.
- FIG. 16A is a perspective view illustrating the push switch 8 when viewed from the upper front right
- FIG. 16B is a perspective view illustrating the push switch 8 when viewed from the upper rear left.
- FIG. 17 is a side view illustrating the push switch 8 according to the fourth embodiment when viewed from the right of the front side.
- FIG. 18 is a top view illustrating the push switch 8 according to the fourth embodiment when viewed from above.
- the push switch 8 is different from the push switch 1 in that the former includes a case 85 instead of the case 15 .
- the push switch 8 is further different from the push switch 1 in that the former includes a frame 87 . Since the structures and functions of components constituting the push switch 8 other than the case 85 and the frame 87 are the same as those of components constituting the push switch 1 denoted by the same reference numerals, a detailed description thereof will not be given herein.
- the case 85 is different from the case 15 in that a pair of fitting portions 852 are formed in the former.
- the pair of fitting portions 852 are recesses formed at the two ends of the upper side of the front surface of the case 85 to fit with the frame 87 .
- the frame 87 is formed by bending one metal sheet basing a predetermined strength and elasticity.
- the frame 87 is fitted into the fitting portions 852 of the case 85 at its two ends and fixed.
- the frame 87 enters the second surface 102 of the substrate 10 from its two ends and holds the substrate 10 , the spacer 12 , the waterproof sheet 13 , and the case 85 to clamp them.
- the push switch 8 includes a frame 87 which holds the substrate 10 , the spacer 12 , the waterproof sheet 13 , and the case 85 to clamp them. Hence, the push switch 8 can make the substrate 10 , the spacer 12 , the waterproof sheet 13 , and the case 85 less likely to fall off.
- the frame 87 is in contact with the substrate 10 on the second surface 102 of the push switch 8 .
- the frame 87 includes a side surface positioning portion 871 on a side surface 874 perpendicular to the second surface 102 and the third surface 103 .
- the frame 87 further includes a side surface protrusion 872 formed on the side surface 874 and extending to separate from the substrate 10 parallel to the third surface 103 .
- Side surface positioning portions 871 and side surface protrusions 872 are formed on left and right side surfaces 874 of the frame 87 to be symmetrical about the substrate 10 ,
- the frame 87 further includes a rear surface protrusion 873 protruding along the second surface 102 .
- the side surface protrusions 872 protrude downwards from the third surface 103 by do, as illustrated in FIG. 17 .
- the side surface positioning portions 871 also protrude downwards from the third surface 103 by at least do, and the rear surface protrusion 873 protrudes downwards from the third surface 103 by d v8 .
- the push switch 8 is placed in a notch 1003 formed by cutting an end of a mounting board 1000 , so that the side surface protrusions 872 are in contact with a front surface 1001 of the mounting board 1000 , as illustrated in FIG. 18 .
- the side surface positioning portions 871 are inserted into engagement holes 1004 formed in the mounting board 1000 , Therefore, the push switch 8 can be easily positioned with respect to the mounting board 1000 and mounted at a high strength.
- the third surface 103 of the push switch 8 is spaced apart from the front surface 1001 of the mourning board 1000 by do, thus forming a groove 806 in the step 107 .
- FIG. 19 is a side view illustrating a push switch 8 ′ according to a modification to the fourth embodiment when viewed from the right of the front side.
- the push switch 8 ′ is different from the push switch 8 in that the former includes a frame 87 ′ instead of the frame 87 . Since the structures and functions of components constituting the push switch 8 ′ other than the frame 87 ′ are the same as those of components constituting the push switch 5 denoted by the same reference numerals, a detailed description thereof will not be given herein.
- the frame 87 ′ is different from the frame 87 in that the former includes side surface positioning portions 871 ′ and side surface protrusions 872 ′ instead of the side surface positioning portions 871 and the side surface protrusions 872 .
- the frame 87 ′ is further different from the frame 87 in that the former includes a second side surface protrusion 875 formed on a side surface 874 ′ and extending to separate from the substrate 10 parallel to the fourth surface 104 .
- the side surface protrusions 872 ′ do not protrude from the third surface 103 .
- the second side surface protrusions 875 protrude from the fourth surface 104 in the direction indicated by an arrow X in FIG. 19 by d h8 .
- the fourth surface 104 of the push switch 8 ′ is spaced apart from a side surface 1002 of a mounting board 1000 by d h8 , thus forming a groove 806 ′ in the step 107 .
- a step is formed by cutting a substrate using a dicing saw in any of the above-described embodiments, but the push switch according to any of the embodiments may include a step formed by 3D printing or milling using an end mill or the like.
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- Engineering & Computer Science (AREA)
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- Push-Button Switches (AREA)
Abstract
Description
- This application is a Divisional application claiming priority to U.S. patent application Ser. No. 16/216,649, filed on Dec. 18, 2018, and claiming the benefit of Japanese Patent Application JP 2017-236685, filed on Dec. 11, 2017, the entire contents of which are hereby incorporated by reference.
- The present disclosure relates to a push switch suitable for, e.g., an operation button of a mobile phone.
- Along with the demand for miniaturization of electronic devices such as mobile phones, it has been contemplated to reduce the mounting space of components used for such a device. Employing a push switch to be fated at an end of a mounting board such as a circuit board as an operation button of the device can reduce the mounting space in the height direction of the mounting board.
- Japanese Unexamined Patent Publication (Kokai) No. 2004-079220, for example, discloses a push switch which is formed by plate-like components such as a spacer and a substrate stacked in layers and is mounted at an end of a mounting board.
- The push switch disclosed in Japanese Unexamined Patent Publication (Kokai) No. 2004-079220 includes a step formed on the substrate constituting the push switch and is mounted to make the step abut against the upper surface of the mounting board.
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FIG. 20 is a schematic sectional view illustrating apush switch 2000 according to the conventional technique as mounted on a mounting board. - The
push switch 2000 includes asubstrate 2010, apressing member 2040, and acase 2050 and is mounted on amounting board 1000. - The
substrate 2010 includes afirst surface 2011, asecond surface 2012, athird surface 2013, afourth surface 2014, and acorner 2015. Thethird surface 2013, thefourth surface 2014, and thecorner 2015 form astep 2017 which functions as an attachment portion to be attached to themourning board 1000 when thepush switch 2000 is mounted on themounting board 1000. - The
third surface 2013 extends from thesecond surface 2012 to thecorner 2015 in a direction perpendicular to thefirst surface 2011 and thesecond surface 2012. Thefourth surface 2014 extends from thecorner 2015 parallel to thefirst surface 2011. - The
step 2017 is formed by cutting thesubstrate 2010 using a rotating tool. Thecorner 2015 located between thethird surface 2013 and thefourth surface 2014 is formed by cutting thestep 2017 using a rotating tool and therefore has a rounded (R) shape. - The
case 2050 movably supports thepressing member 2040 in its opening. When thepressing member 2040 is depressed in the direction indicated by an arrow X, thepush switch 2000 is turned on. When thepressing member 2040 is not depressed, thepush switch 2000 is OFF. - When the
push switch 2000 is mounted on themounting board 1000, thethird surface 2013 comes into contact with afront surface 1001 of themounting board 1000, and thefourth surface 2014 faces aside surface 1002 of themounting board 1000. - In the
push switch 2000, thecorner 2015 is formed into an R shape. With this arrangement, when thepush switch 2000 is mounted on themounting board 1000, thefourth surface 2014 of thepush switch 2000 and theside surface 1002 of themounting board 1000 do not come into contact with each other, but they are spaced apart from each other by a separation distance dg. It is, therefore, difficult to appropriately transmit a pressing force applied to thepush switch 2000 upon depression to the mountinghoard 1000. - It is an object of the present disclosure to provide a push switch which can have a small separation distance from a side surface of a mounting, board, when it is mounted on the mounting board through a step.
- To achieve the above-described object, a push switch according to an embodiment includes a substrate having a first surface on which a first fixed contact point and a second fixed contact point surrounding the first fixed contact point are formed, a second surface located opposite to the first surface, a third surface extending from the second surface to a corner in a direction perpendicular to the first surface, and a fourth surface extending from the corner parallel to the first surface, and a conductive movable contact point having a peripheral edge of the movable contact point which is in contact with the second fixed contact point, and a center of the movable contact point contacted by the first fixed contact point when the movable contact point is pressed, wherein the corner has a groove recessed with respect to at least one of the third surface and the fourth surface.
- In another aspect of the push switch according to the embodiment, the groove is preferably recessed with respect to the third surface.
- In still another aspect of the push switch according to the embodiment, the groove preferably has a length from the fourth surface to the second surface larger than a depth of a recess of the groove from the third surface.
- In still another aspect of the push switch according to the embodiment, the groove is preferably recessed with respect to the fourth surface.
- In still another aspect of the push switch according to the embodiment, the corner preferably includes a plurality of grooves along a line of intersection between the third surface and the fourth surface.
- In still another aspect of the push switch according to the embodiment, the push switch preferably further includes a recess which is formed in a region of the fourth surface spaced apart from a line of intersection between the third surface and the fourth surface by not less than a predetermined distance and is recessed with respect to the fourth surface.
- A push switch according to another embodiment includes a substrate having a first surface on which a first fixed contact point and a second fixed contact point surrounding the first fixed contact point are formed, a second surface located opposite to the first surface, a third surface extending from the second surface to a corner in a direction perpendicular to the first surface, and a fourth surface extending from the corner parallel to the first surface, a conductive movable contact point having a peripheral edge of the movable contact point which is in contact with the second fixed contact point, and a center of the movable contact point contacted by the first fixed contact point when the movable contact point is pressed, and a metal member formed in a region spaced apart from a line of intersection between the third surface and the fourth surface by not less than a predetermined distance and protruding from the third surface or the fourth surface.
- A push switch according to still another embodiment is provided as a push switch mountable on a mounting board, the switch including a substrate having a first surface on which a first fixed contact point and a second fixed contact point surrounding the first fixed contact point are formed, a second surface located opposite to the first surface, a third surface extending from the second surface to a corner in a direction perpendicular to the first surface, and a fourth surface extending from the corner parallel to the first surface, a conductive movable contact point having a peripheral edge of the movable contact point which is in contact with the second fixed contact point, and a center of the movable contact point contacted by the first fixed contact point when the movable contact point is pressed, and an engagement projection formed on the third surface or the fourth surface and engageable with an engagement recess formed in the mounting board.
- In another aspect of the push switch according to the embodiment, a height of the engagement projection formed on the fourth surface from the fourth surface is preferably greater than a depth of the engagement recess formed in the mounting board.
- In still another aspect of the push switch according to the embodiment, the engagement projection formed on the third surface is preferably located at a position having a distance from the fourth surface larger than a distance from an end mounted with the push switch on the mounting board to the engagement recess.
- A push switch according to still another embodiment includes a substrate having, a first surface on which a first fixed contact point and a second fixed contact point surrounding the first fixed contact point are formed, a second surface located opposite to the first surface, a third surface extending from the second surface to a corner in a direction perpendicular to the first surface, and a fourth surface extending from the corner parallel to the first surface, a conductive movable contact point having a peripheral edge of the movable contact point which is in contact with the second fixed contact point, and a center of the movable contact point contacted by the first fixed contact point when the movable contact point is pressed, and a frame in contact with the substrate on the second surface of the substrate, wherein the frame has a side surface protrusion protruding from at least one of the third surface and the fourth surface, on a side surface perpendicular to the second surface and the third surface.
- The push switch according to the present disclosure can have a small separation distance from a side surface of a mounting board, when it is mounted on the mounting board through a step.
- Other features and advantages of the present invention will be apparent from the ensuing description taken in conjunction with the accompanying drawings, in which:
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FIG. 1A is a perspective view illustrating apush switch 1 according to a first embodiment when viewed from the upper front right, andFIG. 1B is a perspective view illustrating thepush switch 1 according to the first embodiment when viewed from the upper rear left; -
FIG. 2 is a schematic view illustrating thepush switch 1 according to the first embodiment in a cross section A-A′; -
FIG. 3 is a schematic rear view illustrating thepush switch 1 according to the first embodiment: -
FIG. 4A is a plan view of a first surface 191 illustrated inFIG. 2 , andFIG. 4B is a plan view of asecond surface 102 illustrated inFIG. 2 ; -
FIG. 5A is a view for explaining a first step in a process for forming a step as illustrated inFIG. 2 , andFIG. 5B is a view for explaining a second step in the process for forming a step as illustrated inFIG. 2 ; -
FIG. 6 is a schematic sectional view illustrating apush switch 2 according to a first modification to the first embodiment; -
FIG. 7 is a schematic sectional view illustrating apush switch 3 according to a second modification to the first embodiment; -
FIG. 8 is a schematic rear view illustrating a push switch 4 according to a third modification to the first embodiment; -
FIG. 9 is a schematic sectional view illustrating apush switch 5 according to a fourth modification to the first embodiment; -
FIG. 10 is a schematic rear view illustrating thepush switch 5 according to the fourth modification to the first embodiment; -
FIG. 11 is a schematic sectional view illustrating apush switch 6 according to a second embodiment; -
FIG. 12 is a schematic sectional view illustrating apush switch 6′ according to a modification to the second embodiment; -
FIG. 13 is a schematic sectional view illustrating apush switch 7 according to a third embodiment; -
FIG. 14 is a schematic sectional view illustrating apush switch 7′ according to a modification to the third embodiment; -
FIG. 15A is a perspective view illustrating apush switch 8 according, to a fourth embodiment when viewed from the upper front right, andFIG. 15B is a perspective view illustrating thepush switch 8 according to the fourth embodiment when viewed from the upper rear left; -
FIG. 16A is a perspective view illustrating thepush switch 8 according to the fourth embodiment before a frame is attached, when viewed from the upper front right, andFIG. 16B is a perspective view illustrating thepush switch 8 according to the fourth embodiment before the frame is attached, when viewed from the upper rear left; -
FIG. 17 is a side view illustrating thepush switch 8 according to the fourth embodiment when viewed from the right of the front side; -
FIG. 18 is a top view illustrating thepush switch 8 according to the fourth embodiment when viewed from above; -
FIG. 19 is a side view illustrating apush switch 8′ according to a modification to the fourth embodiment when viewed from the right of the front side; and -
FIG. 20 is a schematic sectional view illustrating apush switch 2000 according to the conventional technique as mounted on a circuit board. - Embodiments of the present invention will be described in detail below with reference to the drawings. However, it should be noted that the technical scope of the present invention is not limited to these embodiments and encompasses the invention described in the scope of claims and its equivalents.
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FIG. 1A is a perspective view illustrating a push switch f according to a first embodiment when viewed from the upper front right, andFIG. 1B is a perspective view illustrating thepush switch 1 when viewed from the upper rear leftFIG. 2 is a schematic view illustrating the push switch in a cross section A-A′.FIG. 3 is a schematic, rear view illustrating thepush switch 1.FIG. 2 is a schematic view in a cross section B-B′ inFIG. 3 . - The cross section A-A′ is a plane along which the
push switch 1 is cut on a diagonal line passing through the upper right corner and the lower left corner of thepush switch 1 as viewed in the forward direction. - The
push switch 1 includes asubstrate 10, amovable contact point 11, aspacer 12, awaterproof sheet 13, a pressingmember 14, and acase 15. - The
substrate 10 is made of a resin such as glass epoxy and includes afirst surface 101, asecond surface 102, athird surface 103, afourth surface 104, and acorner 105, Thethird surface 103, thefourth surface 104, and thecorner 105 form astep 107 which functions as an attachment portion to be attached to a mountingboard 1000 when thepush switch 1 is mounted on the mountingboard 1000. -
FIG. 4A is a plan view of thefirst surface 101 illustrated inFIG. 2 , andFIG. 48 is a plan view of thesecond surface 102 illustrated inFIG. 2 . - The
first surface 101 is a rectangular flat surface, thespacer 12 adheres to thefirst surface 101 along its outer edge, and a first fixedcontact point 111 and a second fixedcontact point 112 are formed on thefirst surface 101 in a region surrounded by thespacer 12. The first fixedcontact point 111 is a circular conductive member formed near the center, and the second fixedcontact point 112 is a frame-shaped conductive member surrounding the first fixedcontact point 111. The first fixedcontact point 111 and the second fixedcontact point 112 are made of, e.g., copper. - The
second surface 102 is a rectangular flat surface located opposite to thefirst surface 101 and facing in the direction opposite to thefirst surface 101. Thesecond surface 102 is equipped withexternal terminals 120. Theexternal terminals 120 include a firstexternal terminal 121 connected to the first fixedcontact point 111 through a first via 123 and afirst wiring line 125, and a secondexternal terminal 122 connected to the second fixedcontact point 112 through a second via 124 and asecond wiring line 126. - The first via 123 and the second via 124 connect the contact points formed on the
first surface 101 to the wiring lines formed in thesecond surface 102. The first via 123 and the second via 124 are formed by arranging conductors in holes running through a substrate by, e.g., plating. The first via 123 is connected to the first fixed contact point Ill and thefirst wiring line 125, and the second via 124 is connected to the second fixedcontact point 112 and thesecond wiring line 126. - The
first wiring line 125 and thesecond wiring line 126 are conductors such as copper foil formed on the front surface of thesubstrate 10. Thefirst wiring line 125 connects the firstexternal terminal 121 to the first via 123, and thesecond wiring line 126 connects the secondexternal terminal 122 to the second via 124. - The
third surface 103 is a rectangular flat surface formed between thefirst surface 101 and thesecond surface 102. Thethird surface 103 extends from thesecond surface 102 to thecorner 105 in a direction perpendicular to thefirst surface 101 and thesecond surface 102, Thethird surface 103 comes into contact with afront surface 1001 of the mountingboard 1000 when thepush switch 1 is mounted on the mountinghoard 1000. - The
fourth surface 104 is a rectangular flat surface formed between thefirst surface 101 and thesecond surface 102 and facing in the direction opposite to thefirst surface 101. Thefourth surface 104 extends from thecorner 105 in a direction perpendicular to thethird surface 103, a direction parallel to thefirst surface 101 and thesecond surface 102. Thefourth surface 104 comes into contact with aside surface 1002 of the mountingboard 1000 when thepush switch 1 is mounted on the mountingboard 1000. - The
corner 105 includes agroove 106 recessed with respect to thefourth surface 104. Thecorner 105 is formed as a recess having a semicircular cross section ranging from the right end to the left end of the upper side of thefourth surface 104, when thecorner 105 illustrated inFIG. 2 is viewed from the right. -
FIGS. 5A and 58 are views far explaining: a process for forming a step as illustrated inFIG. 2 , in whichFIG. 5A illustrates a first step, andFIG. 5B illustrates a second step. - In the first step, a dicing saw (not illustrated) cuts a nearly
rectangular parallelepiped substrate 3000 across a length L1 in a direction perpendicular to thefirst surface 101, from the surface of thesubstrate 3000 opposite to thefirst surface 101. In this case, the dicing saw cuts thesubstrate 3000 from the vicinity of the lower end of theexternal terminal 120. The length L1 is the sum of a depth D3 of thethird surface 103 and a depth d6 of thegroove 106, The width cut by the dicing saw corresponds to a width w6 of thegroove 106. - In the second step, the dicing saw cuts the
substrate 3000 across a length L2 in a direction parallel to thefirst surface 101, from a surface perpendicular to thefirst surface 101 of thesubstrate 3000 and opposite to that on which theexternal terminal 120 is not placed of the surfaces formed by cutting in the first step. The dicing saw forms asubstrate 10 by isolating acut material 3010 from thesubstrate 3000. The dicing saw cuts thesubstrate 3000 to set the dimension of thethird surface 103 in the depth direction to D3. The length L2 is the sum of a height H4 of the fourth surface and the width w6 of thegroove 106. - The
movable contact point 11 is made of an elastic conductive member such as stainless steel and brass formed into a thin dome shape. Themovable contact point 11 may be formed into, e.g., a barrel shape having opposed sides and formed by cutting a convex dome-shaped leaf spring member. Themovable contact point 11 may also have a circular shape and other dome shapes. - The
movable contact point 11 includes aperipheral edge 113 and acenter 114. Theperipheral edge 113 of themovable contact point 11 is at least partially in contact with the second fixedcontact point 112. Thecenter 114 of themovable contact point 11 is spaced apart from the first fixedcontact point 111 when the pressingmember 14 is not depressed. When the pressingmember 14 is not depressed, the firstexternal terminal 121 connected to the first fixedcontact point 111 and the secondexternal terminal 122 connected to the second fixedcontact point 112 are not electrically connected to each other. In this case, thepush switch 1 is OFF. For a barrel-shapedmovable contact point 11, theperipheral edge 113 has its edge portions in a horizontal direction in contact with thefirst surface 101 and its edge portions in a vertical directions not in contact with thefirst surface 101. - When the pressing
member 14 is depressed and moved in a depression direction indicated by an arrow X, thecenter 114 of themovable contact point 11 moves in the depression direction together with the pressingmember 14 and comes into contact with the first fixedcontact point 111. When thecenter 114 of themovable contact point 11 comes into contact with the first fixedcontact point 111 upon depression of the pressingmember 14, the firstexternal terminal 121 and the secondexternal terminal 122 are electrically connected to each other, and thepush switch 1 is turned on. When the pressingmember 14 is released, themovable contact point 11 elastically returns to its original shape, thecenter 114 of themovable contact point 11 moves upwards and separates from the first fixedcontact point 111, and thepush switch 1 is turned off. - The
spacer 12 is a frame-shaped resin sheet such as a polyimide including an opening hole which can accommodate themovable contact point 11 in its central region. The outer frame of thespacer 12 has nearly the same shape as that of the outer periphery of thefirst surface 101 of thesubstrate 10. The back surface of thespacer 12 may be fixed by, e.g., bonding to thesubstrate 10 through an adhesive layer (not illustrated). - The
waterproof sheet 13 is made of a resin such as polyethylene or vinyl chloride and has nearly the same shape as that of the outer periphery of thefirst surface 101 of thesubstrate 10. The outer edge of the back surface of thewaterproof sheet 13 is bonded to the front surface of thespacer 12 through an adhesive layer (not illustrated). Thewaterproof sheet 13 seals the space to accommodate themovable contact point 11 and prevents the entrance of, e.g., water and foreign particles from thecase 15 into the space to accommodate themovable contact point 11. - The pressing
member 14 is made of a resin such as ABS resin and supported on its periphery by thecase 15. Upon depression of the pressingmember 14, it moves in a depression direction indicated by the arrow X and presses thecenter 114 of themovable contact point 11. - The
case 15 is made of a resin such as ABS resin and includes anopening 151 formed in it, into which the pressingmember 14 can be inserted. The back surface of thecase 15 is bonded to the front surface of thewaterproof sheet 13 through an adhesive layer (not illustrated). - The
push switch 1 is manufactured by sequentially arranging thesubstrate 10, themovable contact point 11, thespacer 12, thewaterproof sheet 13, the pressingmember 14, and thecase 15, First, the back surface of thespacer 12 is bonded to thefirst surface 101oldie substrate 10. Then, themovable contact point 11 is placed so that theperipheral edge 113 is in contact with the second fixedcontact point 112 formed on thefirst surface 101. The back surface of thewaterproof sheet 13 is bonded to the front surface of thespacer 12. The back surface of thecase 15 having the pressingmember 14 inserted into theopening 151 is bonded to the front surface of thewaterproof sheet 13. - The
push switch 1 can have a small separation distance between thefourth surface 104 and theside surface 1002 of the mountingboard 1000, when it is mounted on the mountingboard 1000, with thecorner 105 of thestep 107 formed to include agroove 106 recessed with respect to thefourth surface 104. Hence, thepush switch 1 can appropriately transmit a pressing force applied to thepush switch 1 upon depression to the mountingboard 1000. - Since the
push switch 1 can include a step formed by cutting a single substrate, the manufacturing cost can be kept less than when a step is formed by laminating two substrates. When a step is formed by laminating two substrates, the dimensional accuracy of the step may degrade due to a shift in position of the substrates upon lamination. Since, however, thepush switch 1 includes a step formed by cutting a single substrate, the dimensional accuracy of the step is less likely to degrade. -
FIG. 6 is a schematic sectional view illustrating apush switch 2 according to a first modification to the first embodiment, andFIG. 7 is a schematic sectional view illustrating apush switch 3 according to a second modification to the first embodiment. - The
push switch 2 is different from thepush switch 1 in that the former includes asubstrate 20 instead of thesubstrate 10, Since the structures and functions of components constituting thepush switch 2 other than thesubstrate 20 are the same as those of components constituting thepush switch 1 denoted by the same reference numerals, a detailed description thereof will not be given herein. - The
substrate 20 is different from thesubstrate 10 in that the former includes acorner 205 including agroove 206 recessed with respect to athird surface 203, instead of thecorner 105. Thegroove 206 is formed by cutting longer than the height of afourth surface 204 in the second step of forming thefourth surface 204 instead of the first step of forming thethird surface 203, in forming astep 207. - The
push switch 3 is different from the push switch) in that the former includes asubstrate 30 instead of thesubstrate 10. Since the structures and functions of components constituting thepush switch 3 other than thesubstrate 30 are the same as those of components constituting thepush switch 1 denoted by the same reference numerals, a detailed description thereof will not be given herein. - The
substrate 30 is different from thesubstrate 10 in that the former includes acorner 305 including agroove 306 recessed with respect to both athird surface 303 and afourth surface 304, instead of thecorner 105, Thegroove 306 is formed by cutting longer than the depth of thethird surface 303 in the first step of forming thethird surface 303 and cutting longer than the height of thefourth surface 304 in the second step of forming thefourth surface 304, in forming astep 307. -
FIG. 8 is a schematic rear view illustrating a push switch 4 according to a third modification to the first embodiment. - The push switch 4 is different from the
push switch 1 in that the former includes asubstrate 40 instead of thesubstrate 10. A schematic view in a cross section C-C′ illustrated inFIG. 8 is similar to that illustrated inFIG. 2 . Since the structures and functions of components constituting the push switch 4 other than thesubstrate 40 are the same as those of components constituting thepush switch 1 denoted by the same reference numerals, a detailed description thereof will not be given herein. - The
substrate 40 is different from thesubstrate 10 in that the former includes a corner 405 includinggrooves 406, instead of thecorner 105. Thegrooves 406 are arranged along the line of intersection between thethird surface 103 and thefourth surface 104. Referring toFIG. 2 , the position of the line of intersection between thethird surface 103 and thefourth surface 104 is indicated by a point ofintersection 108 between the cross section A-A′ and the line of intersection between thethird surface 103 and thefourth surface 104. - A plurality of
grooves 406 are formed in the push switch 4 at positions corresponding to respectiveexternal terminals 420, as illustrated inFIG. 8 . The push switch 4 includes a plurality ofgrooves 406 at positions corresponding to respectiveexternal terminals 420 and therefore achieves improved soldering to a mountingboard 1000. -
FIG. 9 is a schematic sectional view illustrating apush switch 5 according to a fourth modification to the first embodiment.FIG. 10 is a schematic rear view illustrating thepush switch 5 according to the fourth modification to the first embodiment.FIG. 9 is a schematic view in a cross section D-D′ illustrated inFIG. 10 . - The
push switch 5 is different from thepush switch 1 in that the former includes asubstrate 50 instead of thesubstrate 10. Since the strictures and functions of components constituting thepush switch 5 other than thesubstrate 50 are the same as those of components constituting thepush switch 1 denoted by the same reference numerals, a detailed description thereof will not be given herein. - The
substrate 50 is different from thesubstrate 10 in that the former includes alead frame 58 buried in athird surface 503. Thesubstrate 50 is further different from thesubstrate 10 in that the former includes arecess 509 recessed with respect to afourth surface 504. - The
lead frame 58 is formed in a region spaced apart from the line of intersection between thethird surface 503 and thefourth surface 504 by a predetermined distance dh5 or more. Agroove 506 is formed along the line of intersection between thethird surface 503 and thefourth surface 504. Thegroove 506 includes a region recessed with respect to thethird surface 503 and a region recessed with respect to thefourth surface 504. - The predetermined distance dh5 is larger than a depth dr5 of the recess of the
groove 506 from thethird surface 503, in thegroove 506, the length from thefourth surface 504 to asecond surface 502 is the predetermined distance dh5. Therefore, thegroove 506 has a length from thefourth surface 504 to thesecond surface 502 larger than the depth of the recess of thegroove 506 from thethird surface 503. - The
recess 509 is formed in a region of thefourth surface 504 spaced apart from the line of intersection between thethird surface 503 and thefourth surface 504 by a predetermined distance dv5 or more. - When the
push switch 5 is mounted on a mountingboard 1000,external terminals 520 are soldered to a circuit formed on afront surface 1001 of the mountingboard 1000. Excessive solder and flux may reach thegroove 506 upon passing between thefront surface 1001 of the mountingboard 1000 and thethird surface 503 of thepush switch 5. Thegroove 506 can accommodate the excessive solder and flux. - The
groove 506 of thepush switch 5 includes a region recessed with respect to thethird surface 503. This structure can set the distance between theexternal terminals 520 and thegroove 506 small in thepush switch 5, Thepush switch 5 has a small distance between theexternal terminals 520 and thegroove 506 and therefore achieves more efficient accommodation of excessive solder and flux in thegroove 506. Hence, thepush switch 5 can be more appropriately soldered to the mountingboard 1000. - Since the
push switch 5 includes arecess 509 in thefourth surface 504, even when the mountingboard 1000 includes a protrusion such as a burr at the lower end of aside surface 1002, the protrusion can be accommodated in therecess 509. Hence, thepush switch 5 can be stably positioned with respect to the mountingboard 1000. -
FIG. 11 is a schematic sectional view illustrating apush switch 6 according to a second embodiment. - The
push switch 6 is different from thepush switch 1 in that the former includes asubstrate 60 instead of thesubstrate 10. Since the structures and functions of components constituting thepush switch 6 other than thesubstrate 60 are the same as those of components constituting thepush switch 1 denoted by the same reference numerals, a detailed description thereof will not be given herein. - The
substrate 60 is different from thesubstrate 10 in that the former includes alead frame 68 protruding from athird surface 603. Thelead frame 68 is a metal member formed in a region spaced apart from the line of intersection between thethird surface 603 and afourth surface 604 by a predetermined distance or more. The space formed between thelead frame 68 and thefourth surface 604 constitutes agroove 606. Thegroove 606 may not be recessed with respect to at least one of thethird surface 603 and thefourth surface 604. - When the connection portion between the
third surface 603 and thefourth surface 604 forms a curved surface, the line of intersection between a virtual third surface obtained by extending the flat portion of thethird surface 603 and a virtual fourth surface Obtained by extending the flat portion of thefourth surface 604 can be defined as the line of intersection between thethird surface 603 and thefourth surface 604. - Referring to
FIG. 11 , the position of the line of intersection between thethird surface 603 and thefourth surface 604 is indicated by a point ofintersection 608 between the cross section A-A′ and the line of intersection between thethird surface 603 and thefourth surface 604. Thelead frame 68 is formed in a region of thethird surface 603 spaced apart from the line of intersection between thethird surface 603 and thefourth surface 604 by a predetermined distance dh6 or more. - The
lead frame 68 is connected to the first fixedcontact point 111 or the second fixedcontact point 112. When thepush switch 6 is mounted on a mountingboard 1000 by reflow soldering, thelead frame 68 is soldered to a circuit formed on afront surface 1001 of the mountingboard 1000. - The
push switch 6 may include another metal member such as a soldering pattern on thethird surface 603, instead of thelead frame 68. -
FIG. 12 is a schematic sectional view illustrating apush switch 6′ according to a modification to the second embodiment. - The
push switch 6′ is different from thepush switch 6 in that the former includes asubstrate 60′ instead of thesubstrate 60. Since the structures and functions of components constituting thepush switch 6′ other than thesubstrate 60′ are the same as those of components constituting thepush switch 6 denoted by the same reference numerals, a detailed description thereof will not be given herein. - The
substrate 60′ is different from thesubstrate 60 in that the former includes alead frame 68′ protruding from thefourth surface 604, instead of the lead frame 6S protruding from thethird surface 603. Thelead frame 68′ is formed in a region spaced apart from the line of intersection between thethird surface 603 and thefourth surface 604 by a predetermined distance or more. The space formed between thelead frame 68′ and thethird surface 603 constitutes agroove 606′. Thegroove 606′ may not be recessed with respect to at least one of thethird surface 603 and thefourth surface 604. - The
lead frame 68′ is formed in a region of thefourth surface 604 spaced apart from the line of intersection between thethird surface 603 and thefourth surface 604 by a predetermined distance dv6 or more. -
FIG. 13 is a schematic sectional view illustrating apush switch 7 according to a third embodiment. - The
push switch 7 is different from thepush switch 1 in that the former includes asubstrate 70 instead of thesubstrate 10. Since the structures and functions of components constituting thepush switch 7 other than thesubstrate 70 are the same as those of components constituting thepush switch 1 denoted by the same reference numerals, a detailed description thereof will not be given herein. - The
substrate 70 is different from thesubstrate 10 in that the former includes anengagement projection 730 protruding from afourth surface 704. Theengagement projection 730 can engage with anengagement recess 1030 funned in aside surface 1002 of a mountingboard 1000. A height d71 of theengagement projection 730 from thefourth surface 704 is greater than a depth d72 of theengagement recess 1030 formed in the mountingboard 1000. - In the
push switch 7, theengagement projection 730 engages with theengagement recess 1030 when thepush switch 7 is mounted on the mountingboard 1000, Hence, thepush switch 7 can be accurately placed at a mounting position on the mountingboard 1000. - The distance between the
side surface 1002 of the mountingboard 1000 and thefourth surface 704 is not smaller than d71−d72. The space formed among theside surface 1002 of the mountingboard 1000, thefourth surface 704, and theengagement projection 730 constitutes agroove 706. Thegroove 706 may not be recessed with respect to athird surface 703 and thefourth surface 704, -
FIG. 14 is a schematic sectional view illustrating apush switch 7 according to a modification to the third embodiment. - The
push switch 7′ is different from thepush switch 7 in that the former includes asubstrate 70′ instead of thesubstrate 70. Since the structures and functions of components constituting thepush switch 7′ other than thesubstrate 70′ are the same as those of components constituting thepush switch 7 denoted by the same reference numerals, a detailed description thereof will not be given herein. - The
substrate 70′ is different from thesubstrate 70 in that the former includes anengagement projection 730′ protruding from thethird surface 703. Theengagement projection 730′ can engage with anengagement recess 1030′ formed in afront surface 1001 of a mountingboard 1000. Thepush switch 7′ is mounted so that thefourth surface 704 of thepush switch 7′ faces aside surface 1002, i.e., an end of the mountingboard 1000. Theengagement projection 730′ is formed at a position having a distance d73 from thefourth surface 704 larger than a distance d74 from theside surface 1002 of the mountingboard 1000 to theengagement recess 1030′. - The distance between the
side surface 1002 of the mountingboard 1000 and thefourth surface 704 is not smaller than d73−d74. The space formed between theside surface 1002 of the mountingboard 1000 and thefourth surface 704 constitutes a groove 70C. Thegroove 706 may not be recessed with respect to thethird surface 703 and thefourth surface 704. -
FIGS. 15A and 15B are perspective views illustrating apush switch 8 according to a fourth embodiment.FIG. 15A is a perspective view illustrating thepush switch 8 when viewed from the upper front right, andFIG. 15B is a perspective view illustrating thepush switch 8 when viewed from the upper rear left,FIGS. 16A and 16B are perspective views illustrating thepush switch 8 according to the fourth embodiment before a frame is attached.FIG. 16A is a perspective view illustrating thepush switch 8 when viewed from the upper front right, andFIG. 16B is a perspective view illustrating thepush switch 8 when viewed from the upper rear left.FIG. 17 is a side view illustrating thepush switch 8 according to the fourth embodiment when viewed from the right of the front side.FIG. 18 is a top view illustrating thepush switch 8 according to the fourth embodiment when viewed from above. - The
push switch 8 is different from thepush switch 1 in that the former includes acase 85 instead of thecase 15. Thepush switch 8 is further different from thepush switch 1 in that the former includes aframe 87. Since the structures and functions of components constituting thepush switch 8 other than thecase 85 and theframe 87 are the same as those of components constituting thepush switch 1 denoted by the same reference numerals, a detailed description thereof will not be given herein. - The
case 85 is different from thecase 15 in that a pair offitting portions 852 are formed in the former. The pair offitting portions 852 are recesses formed at the two ends of the upper side of the front surface of thecase 85 to fit with theframe 87. - The
frame 87 is formed by bending one metal sheet basing a predetermined strength and elasticity. Theframe 87 is fitted into thefitting portions 852 of thecase 85 at its two ends and fixed. Theframe 87 enters thesecond surface 102 of thesubstrate 10 from its two ends and holds thesubstrate 10, thespacer 12, thewaterproof sheet 13, and thecase 85 to clamp them. - The
push switch 8 includes aframe 87 which holds thesubstrate 10, thespacer 12, thewaterproof sheet 13, and thecase 85 to clamp them. Hence, thepush switch 8 can make thesubstrate 10, thespacer 12, thewaterproof sheet 13, and thecase 85 less likely to fall off. - The
frame 87 is in contact with thesubstrate 10 on thesecond surface 102 of thepush switch 8. Theframe 87 includes a sidesurface positioning portion 871 on aside surface 874 perpendicular to thesecond surface 102 and thethird surface 103. Theframe 87 further includes aside surface protrusion 872 formed on theside surface 874 and extending to separate from thesubstrate 10 parallel to thethird surface 103. Sidesurface positioning portions 871 and side surfaceprotrusions 872 are formed on left and right side surfaces 874 of theframe 87 to be symmetrical about thesubstrate 10, Theframe 87 further includes arear surface protrusion 873 protruding along thesecond surface 102. - The side surface
protrusions 872 protrude downwards from thethird surface 103 by do, as illustrated inFIG. 17 . The sidesurface positioning portions 871 also protrude downwards from thethird surface 103 by at least do, and therear surface protrusion 873 protrudes downwards from thethird surface 103 by dv8. - The
push switch 8 is placed in anotch 1003 formed by cutting an end of a mountingboard 1000, so that theside surface protrusions 872 are in contact with afront surface 1001 of the mountingboard 1000, as illustrated inFIG. 18 . In this case, the sidesurface positioning portions 871 are inserted intoengagement holes 1004 formed in the mountingboard 1000, Therefore, thepush switch 8 can be easily positioned with respect to the mountingboard 1000 and mounted at a high strength. - Since the
side surface protrusions 872 protrude downwards by do, thethird surface 103 of thepush switch 8 is spaced apart from thefront surface 1001 of themourning board 1000 by do, thus forming agroove 806 in thestep 107. -
FIG. 19 is a side view illustrating apush switch 8′ according to a modification to the fourth embodiment when viewed from the right of the front side. - The
push switch 8′ is different from thepush switch 8 in that the former includes aframe 87′ instead of theframe 87. Since the structures and functions of components constituting thepush switch 8′ other than theframe 87′ are the same as those of components constituting thepush switch 5 denoted by the same reference numerals, a detailed description thereof will not be given herein. - The
frame 87′ is different from theframe 87 in that the former includes sidesurface positioning portions 871′ and side surfaceprotrusions 872′ instead of the sidesurface positioning portions 871 and the side surface protrusions 872. Theframe 87′ is further different from theframe 87 in that the former includes a secondside surface protrusion 875 formed on aside surface 874′ and extending to separate from thesubstrate 10 parallel to thefourth surface 104. - The side surface
protrusions 872′ do not protrude from thethird surface 103. The secondside surface protrusions 875 protrude from thefourth surface 104 in the direction indicated by an arrow X inFIG. 19 by dh8. - Since the second
side surface protrusions 875 protrude by dh8, thefourth surface 104 of thepush switch 8′ is spaced apart from aside surface 1002 of a mountingboard 1000 by dh8, thus forming agroove 806′ in thestep 107. - A step is formed by cutting a substrate using a dicing saw in any of the above-described embodiments, but the push switch according to any of the embodiments may include a step formed by 3D printing or milling using an end mill or the like.
- The preceding description has been presented only to illustrate and describe exemplary embodiments of the present invention. It is not intended to be exhaustive or to limit the invention to any precise form disclosed. It will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings oldie invention without departing from the essential scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the claims. The invention may be practiced otherwise than is specifically explained and illustrated without departing from its spirit or scope.
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/142,036 US20210125799A1 (en) | 2017-12-11 | 2021-01-05 | Push switch |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017236685 | 2017-12-11 | ||
JP2017-236685 | 2017-12-11 | ||
US16/216,649 US10916389B2 (en) | 2017-12-11 | 2018-12-11 | Push switch |
US17/142,036 US20210125799A1 (en) | 2017-12-11 | 2021-01-05 | Push switch |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/216,649 Division US10916389B2 (en) | 2017-12-11 | 2018-12-11 | Push switch |
Publications (1)
Publication Number | Publication Date |
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US20210125799A1 true US20210125799A1 (en) | 2021-04-29 |
Family
ID=66697277
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/216,649 Active US10916389B2 (en) | 2017-12-11 | 2018-12-11 | Push switch |
US17/142,036 Abandoned US20210125799A1 (en) | 2017-12-11 | 2021-01-05 | Push switch |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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US16/216,649 Active US10916389B2 (en) | 2017-12-11 | 2018-12-11 | Push switch |
Country Status (2)
Country | Link |
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US (2) | US10916389B2 (en) |
JP (1) | JP2019106371A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021049650A1 (en) * | 2019-09-13 | 2021-03-18 | シチズン電子株式会社 | Push switch and method for manufacturing same |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4062675B2 (en) | 2002-08-12 | 2008-03-19 | シチズン電子株式会社 | Horizontal push button switch and its mounting method |
JP4557043B2 (en) * | 2008-04-25 | 2010-10-06 | ミツミ電機株式会社 | Push-in electronic components |
JP6427761B2 (en) | 2014-10-09 | 2018-11-28 | パナソニックIpマネジメント株式会社 | Push switch |
-
2018
- 2018-12-10 JP JP2018231133A patent/JP2019106371A/en active Pending
- 2018-12-11 US US16/216,649 patent/US10916389B2/en active Active
-
2021
- 2021-01-05 US US17/142,036 patent/US20210125799A1/en not_active Abandoned
Also Published As
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US10916389B2 (en) | 2021-02-09 |
US20190180954A1 (en) | 2019-06-13 |
JP2019106371A (en) | 2019-06-27 |
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