JP2007005103A - Method for mounting keytop to push switch part, and push switch part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for mounting a keytop to a push switch part wherein the pressing part of the keytop can be inserted in an insertion part formed at the upper wall of a case from a direction other than a direction immediately above the hole. <P>SOLUTION: In this method for mounting the keytop 72 to the push switch part 2, when the keytop 72 mounted to an exterior case 70, and the push switch 2 formed with the insertion part 12 on the upper wall 11a of a case 10 covering the upper part of a switch 46 are prepared, and the push switch part 2 is mounted to the exterior case 70, the keytop 72 is mounted to the exterior case 70 in advance by a hinge 76 having flexibility, and after raising the keytop 72 by making the pressing part 74 abut on the upper wall of the case 10 to warp the hinge 76, the pressing part 74 can be inserted in the insertion part 12 from an obliquely upper position with respect to the surface of the upper wall 11a of the case 10 by inserting it in the insertion part 12. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method of attaching a key top to a press switch part, and a press switch part used in the method.

  2. Description of the Related Art Conventionally, a key top is attached to a fixing member such as an outer case of an electronic device so that the key top can be moved up and down, and a pressing switch unit is assembled to the fixing member, and the switch of the pressing switch unit is turned on by pressing the key top. There is a switch mechanism of structure. In an electronic device equipped with this type of switch mechanism, the key top is attached to the fixing member of the electronic device in advance during the assembly thereof, while the pressing switch portion is attached integrally to the component to be assembled to the fixing member, By assembling this part to the fixing member, the switch of the pressing switch portion is simultaneously positioned at a position where it is pressed by the pressing portion of the key top.

On the other hand, the press switch part has a case for storing the switch, and an insertion part (insertion hole) is formed on the upper wall of the case, and the projecting press part of the key top is inserted into the insertion hole. There is something.
JP 2001-184982 A

  However, this type of conventional pressing switch part is formed such that the insertion part of the upper wall of the case is inserted by inserting the pressing part of the key top from a position directly above the surface of the upper wall of the case. For example, it is a through hole formed perpendicular to the surface of the upper wall of the case. However, the diversification of electronic device designs and the increase in the number of parts have made the assembly procedure more complicated. In such a case, it may be necessary to insert it diagonally upward or laterally with respect to the surface of the upper wall of the case. The structure of the part could not cope.

  The present invention has been made in view of the above-mentioned points, and its purpose is to insert the pressing portion of the key top into the insertion portion provided on the upper wall of the case from a position other than directly above the surface of the upper wall of the case. It is an object of the present invention to provide a method for attaching a key top to a pressing switch unit that can be inserted into a fixing member of an electronic device, and a pressing switch unit used for the method.

  In order to solve the above-mentioned problem, the invention according to claim 1 of the present application includes a key top attached to a fixed member so as to be movable up and down, a switch pressed by a pressing portion provided on the key top, and an upper portion of the switch. A case having an upper wall covering the case, and a pressing switch portion provided with an insertion portion through which the pressing portion is inserted is prepared on the upper wall of the case, and the pressing switch portion is assembled to the fixing member. At the time, the key top pressing portion is inserted into the insertion portion from a position obliquely above or laterally with respect to the surface of the upper wall of the case. A key top is attached to the fixing member through a flexible hinge portion, and the pressing portion is brought into contact with the upper wall of the case to bend the hinge portion to lift the key top. After, characterized in that for inserting into the insertion portion.

The invention according to claim 2 of the present application has a key top attached to the fixing member so as to be movable up and down, a switch pressed by a pressing portion provided on the key top, and an upper wall covering an upper portion of the switch. A pressing switch portion provided with an insertion portion through which the pressing portion is inserted on the upper wall of the case, and when the pressing switch portion is assembled to the fixing member, the key top The pressing portion of the key top is inserted into the insertion portion from a position obliquely above or laterally with respect to the surface of the upper wall of the case.
A slit portion communicating with the insertion portion is formed on the upper wall of the case, and the pressing portion is slid into the slit portion and then inserted into the insertion portion.

  The invention according to claim 3 of the present application includes a switch and a case having an upper wall that covers an upper portion of the switch, and a key top pressing portion that presses the switch is provided on the upper wall of the case. A press switch portion provided with an insertion portion to be inserted, wherein a slit portion is formed on the upper wall of the case, the slit portion communicating with the insertion portion and slidingly inserting the pressing portion of the key top.

  The invention according to claim 4 of the present application is the first switch, the operation type object provided with the pressing portion for pressing the first switch on the lower surface thereof, and the second switch disposed on the upper surface of the operation type object. And a case having a storage part for storing the actuated object so as to be movable up and down and an upper wall covering an upper part of the storage part, and the second switch is provided on the upper wall of the case. A press switch portion provided with an insertion portion for inserting a pressing portion of a key top that presses the slit, and a slit portion that is slidably inserted into the upper wall of the case, in communication with the insertion portion. Is formed.

  Invention of Claim 5 of this application is a press switch part of Claim 3 or 4, Comprising: The said slit part is diagonally upward with respect to the surface of the upper wall of the said case on the said keytop press part. It is formed in the shape which is slid and inserted toward the said insertion part from the position of a direction or the position of a right side.

  In the invention according to claim 6 of the present application, in the press switch portion according to claim 3, 4 or 5, the slit portion is formed to communicate with the insertion portion from the outer periphery of the upper wall of the case. It is characterized by that.

  According to the invention described in claim 1 of the present application, the key top is attached to the fixing member in advance via the flexible hinge portion, and the pressing portion of the key top is brought into contact with the upper wall of the case to be hinged. After bending the part and lifting the key top, the key top pressing part is inserted into the insertion part from a position obliquely above or laterally with respect to the surface of the upper wall of the case. It is possible to easily insert the top pressing portion into the insertion portion from a position other than directly above the surface of the case upper wall. Therefore, it becomes possible to insert the key top pressing portion into the insertion portion without being affected by the shape of the fixing member of the electronic device to which the pressing switch portion is assembled and the arrangement of other components of the electronic device. The procedure for incorporating the unit into the electronic device can be simplified and improved in efficiency.

  According to the invention described in claim 2 of the present application, the slit portion communicating with the insertion portion is formed on the upper wall of the case, and the pressing portion of the key top is slid into the slit portion, and then inserted into the insertion portion. By inserting, the key top pressing part is inserted into the insertion part obliquely above or laterally with respect to the upper wall surface of the case, so that the key top pressing part is directly above the case upper wall surface. It can be easily inserted into the insertion portion from a position other than the direction. Therefore, it becomes possible to insert the key top pressing portion into the insertion portion without being affected by the shape of the fixing member of the electronic device to which the pressing switch portion is assembled and the arrangement of other components of the electronic device. The procedure for incorporating the unit into the electronic device can be simplified and improved in efficiency.

  According to the invention described in claim 3 or 4 of the present application, a slit portion is formed on the upper wall of the case so as to communicate with the insertion portion through which the key top pressing portion is inserted, and to slide the key top pressing portion. Therefore, the pressing part of the key top can be inserted into the insertion part from a position obliquely above or laterally with respect to the surface of the case upper wall. Therefore, it becomes possible to insert the key top pressing portion into the insertion portion without being affected by the shape of the fixing member of the electronic device to which the pressing switch portion is assembled and the arrangement of other components of the electronic device. The procedure for incorporating the unit into the electronic device can be simplified and improved in efficiency.

  According to the invention described in claim 5 of the present application, the slit portion is shaped so that the pressing portion of the key top is slid into the insertion portion from a position obliquely above or laterally with respect to the surface of the upper wall of the case. The key top pressing portion is obliquely above the surface of the upper wall of the case, depending on the shape of the fixing member of the electronic device to which the pressing switch portion is assembled and the arrangement of other components of the electronic device. Even when the insertion portion has to be inserted from the lateral position, the pressing switch portion can be reliably incorporated into the electronic device, and the procedure can be simplified and made efficient.

  According to the invention described in claim 6 of the present application, since the slit portion is formed to communicate with the insertion portion from the outer periphery of the upper wall of the case, the pressing portion of the key top is made to the surface of the case upper wall. It is possible to slide and insert horizontally from the horizontal position, and the key top pressing part is placed on the case according to the shape of the fixing member of the electronic device to which the pressing switch unit is assembled and the arrangement of other components of the electronic device. Even when the insertion portion has to be inserted from a position lateral to the surface of the wall, the pressing switch portion can be reliably incorporated into the electronic device, and the procedure can be simplified and made efficient.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[First Embodiment]
A first embodiment of the present invention will be described. FIG. 1 is a schematic sectional side view of a switch mechanism 1 assembled by using a method for attaching a key top to a pressing switch according to the present invention, and FIG. 2 is an exploded perspective view seen from above. The switch mechanism 1 includes a key top 72 attached to a fixing member 70 (hereinafter referred to as “exterior case” in each embodiment) of an electronic device, and is installed in the exterior case 70 and installed below the key top 72. And a pressing switch portion 2. Each component will be described in detail.

  The outer case 70 is a housing of an electronic device such as a digital camera. A key top 72 that presses the second switch 46 of the press switch unit 2 is attached in the opening 71 a provided on the surface 71 of the exterior case 70. The surface 71 of the outer case 70 is an inclined surface that is inclined by an angle θ with respect to a direction in which the mounting member 50 described below is assembled in the outer case 70 (direction A in FIG. 1). Further, the surface 71 is a surface substantially parallel to the surface of the mounting portion 52 of the mounting member 50 and the surface of the upper wall 11a of the case 10 which are similarly inclined by an angle θ with respect to the A direction. In each figure, the exterior case 70 shows only a part of the surface 71, and the other parts are not shown.

  The key top 72 is an integrally molded product such as a synthetic resin or a synthetic rubber, and includes a base portion 75 that is substantially cylindrical and has an outer diameter that is slightly smaller than an inner diameter of the opening 71a. A flange portion 78 is formed on the outer peripheral side surface of 75 so as to protrude outward. One end of a thin plate-like hinge portion 76 is connected to the outer periphery of the collar portion 78, and a square columnar fixing portion 77 is provided at the other end of the hinge portion 76. The upper surface of the base portion 75 is an operation portion 73 that is pressed by a finger or the like, and a pressing portion 74 formed of an axial protrusion that presses the second switch 46 is provided on the lower surface thereof. The pressing portion 74 has a lower end surface 74a that is rounded. Further, when the key top 72 is attached to the exterior case 70, the collar portion 78 is disposed below the stepped portion 71b formed on the outer periphery of the opening portion 71a on the lower surface of the exterior case 70, and the base portion 75 is located on the opening portion 71a. It prevents it from coming out upward. The hinge portion 76 has flexibility and is formed in a thin thickness so that it can be easily bent in the vertical direction. The fixing portion 77 is provided with an attachment fixing portion 77a composed of a through hole penetrating vertically. On the other hand, on the outer side of the opening 71 a on the lower surface of the surface 71 of the exterior case 70, a protruding fixing portion 79 protruding downward is formed.

  In order to attach the key top 72 to the exterior case 70, the base 75 is inserted into the opening 71a from the lower side and installed, and the fixing portion 79 is inserted into the mounting fixing portion 77a so as to be placed on the lower surface side of the fixing portion 77. The tip of the protruding fixing portion 79 is fixed by heat caulking. As a result, a gap is formed between the lower surface of the stepped portion 71 b on the outer periphery of the opening 71 a and the upper surface of the collar portion 78, and a gap is also formed between the upper surface of the hinge portion 76 and the lower surface of the exterior case 70. In this state, the key top 72 is installed, and the hinge portion 76 is bent, so that the base portion 75 can move up and down along the direction substantially orthogonal to the surface 71 in the opening portion 71a. The operation portion 73 is exposed to the outside of the exterior case 70 through the opening 71 a, while the pressing portion 74 protrudes downward on the lower side of the surface 71 and perpendicular to the surface 71.

  As shown in FIG. 2, the pressing switch unit 2 is configured by mounting the switch member 20 on the upper surface of the mounting member (mounting plate) 50, covering the case 10 on the switch member 20, and attaching the case 10 to the mounting member 50. Has been. Hereafter, each component of this press switch part 2 is demonstrated.

  FIG. 3 is a perspective view of the case 10 as seen from the lower surface side. As shown in FIG. 2 and FIG. 2, the case 10 is a molded product of synthetic resin formed in a substantially rectangular flat plate shape, and is provided with a storage portion 11 that is a substantially circular recess opening on the lower surface side. The upper part of the storage part 11 is covered with a substantially circular upper wall 11a, and the upper wall 11a protrudes to the upper surface side of the case 10 from the other part of the case 10 as shown in FIG. Hereinafter, the surface of the upper wall 11a refers to the upper surface of the upper wall 11a. And the insertion part 12 which is a substantially circular hole penetrated to the upper and lower surfaces of the upper wall 11a is formed. On the other hand, groove-shaped notches 14 and 15 are formed on the lower surface of the case 10 so as to communicate from the storage portion 11 to both sides in the longitudinal direction of the case 10. In addition, projecting fixing portions 16 that protrude downward are provided at four locations outside the storage portion 11 on the lower surface of the case 10. Further, at the four corners of the case 10, projection-shaped fixing portions 17 that protrude downward are provided.

  FIG. 4 is a development view (exploded view) of the switch member 20. The switch member 20 includes a reversing plate 21, an operation type object 22, and a flexible circuit board 30. In FIG. 4, the actuating object 22 is illustrated with its lower surface facing upward.

  The flexible circuit board 30 is formed by forming a circuit pattern on a flexible synthetic resin film (polyethylene terephthalate film [PET film] or the like), and is formed in a substantially rectangular shape slightly smaller than the outer shape of the case 10. Board portion 31 and a pair of circular substrate portions 32, 33 having a size smaller than that of substrate portion 31, and connecting these substrate portions 31, 32, 33 with connecting portions 34, 35, The drawing portion 36 is drawn from 31. Contact patterns 37, 38, and 39 are formed in the center of each of the substrate portions 31, 32, and 33 by printing a conductive paste. In addition, a connection pattern 40 is formed on the outer periphery of the contact pattern 37 of the substrate portion 31 by printing a conductive paste in a substantially U shape so as to surround the contact pattern 37. A spacer layer 41 formed by printing an insulating paint thicker than the thickness of the conductive paste is provided on the peripheral portions of the upper surface of the substrate portion 32 and the substrate portion 33 except for the contact pattern 38 and 39 portions. Further, a circuit pattern (not shown) is drawn out from each contact pattern 37, 38, 39 and the connection pattern 40 and led to the drawing portion 36. Furthermore, the attachment fixing part 42 which consists of a through-hole is provided in four places outside the connection pattern 40 of the board | substrate part 31. As shown in FIG. Each of these attachment fixing portions 42 is provided at a position corresponding to each fixing portion 16 of the case 10.

  The actuating mold 22 is a molded product of a substantially disc-shaped synthetic resin, and a circular recess 24 for housing the substrate portions 32 and 33 is provided on the upper surface side (see FIG. 2), and at the center of the lower surface. A protruding pressing part 23 is provided. Further, on the outer peripheral side wall of the recess 24, an engaging portion 25 (see FIG. 2) made of a notch-like groove for inserting the connecting portion 34 and an engaging portion 26 made of a slit-like hole for fixing the connecting portion 35. Is provided. The shape and dimensions of the outer periphery of the actuating object 22 are the same shape as the inner periphery of the storage part 11 of the case 10 and slightly smaller than that, and the actuating object 22 moves up and down in the storage part 11. It can be stored freely. On the other hand, the reversing plate 21 is formed by forming an elastic metal plate in a dome shape, and is configured to conduct between the contact pattern 37 and the connection pattern 40 disposed below the reversing plate and to cause a click feeling when reversing. .

  A method for assembling the switch member 20 composed of the above-described components will be described. First, the reversing plate 21 is mounted on the surface of the substrate portion 31 on which the contact pattern 37 and the connection pattern 40 are provided. At this time, the reversing plate 21 is placed so that the center of the reversing plate 21 is located immediately above the contact pattern 37 and the outer periphery of the lower surface of the reversing plate 21 is in contact with the connection pattern 40. The reversing plate 21, the contact pattern 37, and the connection pattern 40 constitute a first switch 45 (see FIG. 4 below). Next, the substrate portion 33 is folded back at the connection portion 35 and overlapped on the substrate portion 32. At this time, the contact pattern 38 and the contact pattern 39 are opposed to each other with a predetermined gap depending on the thickness of the spacer layer 41, and the second switch 46 (see FIG. 1) is formed by the contact pattern 38 and the contact pattern 39. Composed.

  Next, the concave portion 24 of the working mold 22 is placed on the superimposed substrate portion 32 and the substrate portion 33, and these are accommodated in the concave portion 24. At this time, the folded connection portion 35 is inserted into the locking portion 26, and the other connection portion 34 is inserted into the locking portion 25 and locked. And the board | substrate part 32 and the board | substrate part 33 which attached this operation | working type thing 22 are turned up by the connection part 34, and the recessed part 24 of the action | operation type | mold thing 22 faces the upper part of the inversion board 21 mounted in the board | substrate part 31. Overlapping so that. At this time, the pressing portion 23 is placed at the center of the upper surface of the reversing plate 21. Thus, the assembly of the switch member 20 is completed.

  Next, the mounting member (mounting plate) 50 is a flat plate member made of a hard plate such as a synthetic resin plate or a metal plate, and is a linear bent portion provided in a portion away from the one end side 50a by a predetermined distance. 51 is bent at a predetermined angle (angle θ in this embodiment), and a portion between one end side 50 a and the bent portion 51 is inclined by an angle θ with respect to a portion 53 on the other end side of the bent portion 51. The mounting portion 52 is a flat inclined surface. The attachment portion 52 is a portion to which the pressing switch portion 2 is attached, and is formed in a rectangular shape that is substantially the same shape as the outer shape of the case 10. Further, as will be described later in detail, the mounting portion 52 is also inclined by an angle θ with respect to the direction (direction of arrow A in FIG. 1) in which the mounting member 50 is inserted into the exterior case 70 of the electronic device described below. On the other hand, one through hole 54 is provided at each of the four corners of the mounting portion 52 and corresponding to the fixing portion 17 of the case 10, and the through hole 54 is provided at a position corresponding to the fixing portion 16 of the case 10. An attachment fixing portion 55 is provided. In each figure, only a part of the portion 53 on the other end side of the bent portion 51 is illustrated.

  A method for assembling the press switch unit 2 will be described. First, the switch member 20 assembled in the previous procedure is attached to the lower surface side of the case 10. At this time, the actuating object 22 is accommodated in the accommodating part 11 of the case 10, and the connecting parts 34, 35 projecting from the locking parts 25, 26 to the outside of the actuating object 22 are respectively provided in the notch parts 14, 15. The fixing portion 16 of the case 10 is inserted through the mounting fixing portion 42 of the switch member 20 and protrudes to the lower surface side of the substrate portion 31. Next, the case 10 to which the switch member 20 is attached is placed on the attachment member 50 and attached. At that time, the fixing portion 16 of the case 10 protruding to the lower surface side of the substrate portion 31 is inserted through the mounting fixing portion 55 of the mounting portion 52 to protrude to the lower surface side of the mounting member 50, and the fixing portion 17 of the case 10 is The fixing portion 54 of the mounting portion 52 is inserted into the mounting fixing portion 54 so as to protrude from the lower surface side of the mounting member 50, and the ends of the fixing portion 16 and the fixing portion 17 are caulked and fixed. As a result, the switch member 20 is placed on the upper surface of the mounting portion 52 of the mounting member 50, and the case 10 is placed thereon, and the case 10 is fixed to the mounting portion 52. Thus, the assembly of the push switch unit 2 is completed.

  Here, when the assembled press switch part 2 is assembled in the exterior case 70, the press part 74 of the key top 72 is inserted into the insertion part 12 from a position obliquely upward with respect to the surface of the upper wall 11 a of the case 10. A method of attaching the key top 72 to the pressing switch unit 2 will be described. FIG. 5 is a schematic sectional side view for explaining this attachment method. That is, as shown in FIG. 5 (a), the push switch portion 2 must be inserted in the direction A in FIG. 5 and assembled to the exterior case 70, so that it protrudes in a downward direction perpendicular to the surface 71 of the exterior case 70. The pressing portion 74 of the key top 72 must be inserted into the insertion portion 12 from a position obliquely upward with respect to the surface of the upper wall 11a.

  Therefore, as shown in FIG. 6A, the pressing switch 2 is moved in the direction A toward the outer case 70, and the key top 72 is formed on the upper surface of the upper wall 11a of the case 10 as shown in FIG. The lower end surface 74a of the pressing portion 74 is brought into contact with the hinge portion 76, and the key top 72 is lifted upward. When the pressing switch portion 2 is further moved in the A direction from this state, the pressing portion 74 gets over the upper surface of the upper wall 11a and is inserted into the insertion portion 12 as shown in FIG. The push switch unit 2 is disposed and attached at a position directly below the key top 72 (a position directly below in the direction perpendicular to the surface 71). Here, since the lower end surface 74a of the pressing portion 74 is formed in a rounded shape, when the lower end surface 74a of the pressing portion 74 is brought into contact with the upper surface of the upper wall 11a of the case 10, the key top 72 is provided. Is smoothly lifted upward.

  As described above, when the pressing switch unit 2 is assembled into the outer case 70, the key top 72 is attached to the outer case 70 in advance via the hinge portion 76 having flexibility, and the pressing unit 74 is mounted on the case 10. After the key top 72 is lifted by bending the hinge portion 76 in contact with the wall 11a, the pressing portion 74 is inserted into the insertion portion 12, so that the pressing portion 74 of the key top 72 is connected to the upper wall 11a of the case 10. The insertion portion 12 can be easily inserted from a position obliquely upward with respect to the surface, and the assembly of the pressing switch portion 2 to the exterior case 70 can be simplified. Further, the pressing portion 74 of the key top 72 can be inserted into the insertion portion 12 without being affected by the shape of the outer case 70 and the arrangement of other components of the electronic device.

  As shown in FIG. 1, the switch mechanism 1 assembled by the above method includes a first switch 45 including a contact pattern 37, a connection pattern 40 (see FIG. 3), and a reversing plate 21 on the substrate portion 31. The actuating object 22 provided with the pressing part 23 for pressing the first switch 45 on the lower surface, the contact pattern 38 formed on the substrate part 32 arranged on the upper surface of the actuating object 22, and the contact formed on the substrate part 33 A two-stage switch is configured including a second switch 46 configured by a pattern 39 (see FIG. 3), and a pressing portion 74 of a key top 72 that presses the second switch 46 is placed on the second switch 46. It is in the state that was done.

  The operation of the switch mechanism 1 will be described with reference to FIG. First, when the operation portion 73 of the key top 72 is pressed from the state shown in the figure, the key top 72 moves downward (downward orthogonal to the surface of the upper wall 11a of the case 10, the same applies hereinafter). And the press part 74 presses the board | substrate part 32 from the upper surface side, the contact pattern 38 and the contact pattern 39 (refer FIG. 4) are contacted, and the 2nd switch 46 is turned ON. When the operation part 73 of the key top 72 is further pressed from this state, the key top 72 and the actuating object 22 are moved downward together. Then, the pressing portion 23 of the actuating object 22 presses the reversing plate 21 and reverses it, so that the contact pattern 37 and the connection pattern 40 (see FIG. 4) of the substrate portion 31 thereunder become conductive and the first The switch 45 is turned on. Here, since the outer periphery of the actuating object 22 is guided by the inner periphery of the housing portion 11 of the case 10, it moves accurately in the vertical direction (vertical direction perpendicular to the surface of the upper wall 11 a of the case 10). When the pressing of the key top 72 is released, the actuating object 22 and the key top 72 are simultaneously moved upward by the reversing force of the reversing plate 21, the first switch 45 is turned off, and then the second switch 46 is also turned off. .

[Second Embodiment]
Next, a second embodiment of the present invention will be described. In the drawings and the description thereof according to the present embodiment, the same reference numerals are given to the components common to the first embodiment. Items other than those described below are the same as those in the first embodiment. FIG. 6 is a schematic cross-sectional side view of the switch mechanism 1-2 assembled using the method of attaching the key top to the pressing switch portion according to the present invention. The switch mechanism 1-2 differs from the switch mechanism 1 of the first embodiment in that a key top 72-2 having a different shape is installed in place of the key top 72, and in addition to the press switch unit 2, This is the point that a pressing switch section 2-2 including the case 10-2 having the configuration is provided.

  That is, the key top 72-2 has a shape in which the hinge portion 76 and the fixing portion 77 of the key top 72 are omitted, and includes a base portion 75 and a flange portion 78. On the other hand, a key top holding portion 80 is provided on the lower surface side of the surface 71 of the exterior case 70 to hold the key top 72-2 so that it can move up and down within the opening 71a. The key top holding portion 80 includes a side wall 80a that surrounds the outer periphery of the collar portion 78 of the key top 72-2, and a protruding portion 80b that protrudes from the lower end of the side wall 80a toward the inside of the side wall 80a. The key top 72-2 installed on the inner side thereof is guided so as to be movable up and down at 80a, and the key top 72-2 is lowered from the opening 71a by the protrusion 80b positioned on the lower surface side of the collar portion 78. To prevent it from falling out. The key top holding portion 80 is configured as a member formed separately from the outer case 70 and attached to the lower surface side of the surface 71 after the key top 72 is attached in the opening 71a.

  On the other hand, FIG. 7 is a perspective view of the case 10-2 of the pressing switch section 2-2, in which FIG. 7 (a) is a view seen from the upper surface side, and FIG. 7 (b) is a view seen from the lower surface side. It is. The case 10-2, like the case 10, is a synthetic resin molded product formed in a substantially rectangular flat plate shape. The case 10-2 is provided with a storage portion 11 that is a substantially circular recess opening on the lower surface side, and an upper portion of the storage portion 11. Is covered with a substantially circular upper wall 11a. An insertion portion 12 that is a substantially circular hole penetrating the upper and lower surfaces is formed in the center of the upper wall 11a, and the outer periphery of the upper wall 11a (the outer periphery at a position in contact with one side in the longitudinal direction of the case 10). A thin band-shaped slit portion 13 is provided which is cut from the first portion to the insertion portion 12 in a straight line. The slit portion 13 is formed in a straight line toward the A direction which is a direction in which the pressing portion 74 is slid and inserted. That is, the slit portion 13 is formed on the surface of the upper wall 11a so that the pressing portion 74 of the key top 72 is slid and inserted toward the insertion portion 12 from a position obliquely upward with respect to the surface of the upper wall 11a of the case 10. On the other hand, it is formed in a shape that is opened linearly from a position in an obliquely or lateral direction to the insertion portion 12. Here, the slide insertion means that the pressing portion 74 is linearly moved (including parallel movement) from the position other than the upward direction to the insertion portion 12 with respect to the surface of the upper wall 11a of the case 10-2. It means to insert. Further, the slit portion 13 is formed by being cut from a side surface of the outer wall (the outer periphery of the storage portion 11) of the upper wall 11a of the case 10 and communicating with the insertion portion 12 (see FIG. 6). Specifically, it is formed by being cut linearly from the lowest side surface of the upper wall 11a to the insertion portion 12. Further, the slit portion 13 is formed on the upper and lower surfaces of the upper wall 11a except for the thin plate-like connecting portion 18 provided at the outer peripheral portion of the upper wall 11a and the position in the vicinity thereof (the upper portion of the cut portion 14 described below). It is formed to penetrate through. The connecting portion 18 reinforces the portion of the case 10-2 where the slit portion 13 is provided, and the case 10-2 is not easily bent at the portion where the slit portion 13 is provided.

  When the pressing switch portion 2-2 is assembled to the exterior case 70, the pressing portion 74 of the key top 72-2 is inserted into the insertion portion 12 from a position obliquely upward with respect to the surface of the upper wall 11a of the case 10-2. A method of attaching the key top 72-2 to the pressing switch section 2-2 will be described. FIG. 8 is a perspective view for explaining this attachment method, and FIG. 9 is a schematic sectional side view thereof. In this method, as shown in FIG. 9A, the pressing portion 74 is slid and inserted into the slit portion 13 from a position obliquely upward with respect to the surface of the upper wall 11a of the case 10, and then in FIG. As shown, the insertion portion 12 is inserted.

  As described above, the slit portion 13 communicating with the insertion portion 12 is provided on the upper wall 11a of the case 10, and the pressing portion 74 is slid into the slit portion 13, so that the pressing portion 74 of the key top 72-2 is connected to the case 10 of the case 10. Even when the insertion portion 12 has to be inserted from a position other than directly above the surface of the upper wall 11a, the push switch portion 2-2 can be reliably incorporated into the electronic device, and the procedure is simplified. It becomes possible to improve efficiency. In particular, since the slit portion 13 is formed in a shape that is linearly open from a position obliquely upward to the surface of the upper wall 11a of the case 10 to the insertion portion 12, the shape of the outer case 70 and the mounting member Even if the pressing portion 74 of the key top 72 has to be inserted into the insertion portion 12 from a position obliquely upward with respect to the surface of the upper wall 11a of the case 10 due to the shape of 50 and the arrangement configuration thereof, the pressing switch The unit 2-2 can be easily incorporated into an electronic device, and the procedure can be simplified and made efficient.

  In the method for attaching the key top to the pressing switch portion in the first embodiment, the key top 72 is lifted and the pressing portion 74 is inserted into the insertion portion 12, so the key top 72 is interposed between the exterior case 70 and the key top 72. Therefore, there is a limitation in reducing the thickness of the assembled switch mechanism 1. In that respect, in the method of attaching the key top to the pressing switch portion in this embodiment, the pressing portion 74 of the key top 72-2 is slid into the slit portion 13 and the pressing portion 74 is inserted into the insertion portion 12. The gap between the outer case 70 and the key top 72 required in the first embodiment is unnecessary, and the switch mechanism 1-2 can be made thinner accordingly.

  Since the slit part 13 is formed in the shape cut | disconnected from the outer peripheral side surface of the upper wall 11a of the case 10, and is connected to the insertion part 12, the press part 74 of the key top 72 is made into the surface of the upper wall 11a of the case 10. On the other hand, it is also possible to insert the slide horizontally from the position in the lateral direction (true lateral direction). Therefore, for example, the surface 71 of the exterior case 70 and the surface of the upper wall 11a of the case 10 both attach the attachment member 50 to the exterior case 70, such as the exterior case 70 and the press switch portion 2-2 of another shape shown in FIG. Even in the state parallel to the A direction to be inserted into 70, the pressing portion 74 can be slid into the slit portion 13 from a position lateral to the surface of the upper wall 11 a and inserted through the insertion portion 12. Even in such a case, the push switch portion 2-2 can be assembled to the outer case 70 of the electronic device.

  Here, the slit portion 13 is formed as a linear cut, but the shape of the slit portion 13 is not limited to this, and the pressing portion 74 of the key top 72 is directly above the surface of the upper wall 11a. Any other shape may be used as long as it can be slid from another position. Further, the slit portion 13 has at least the surface of the upper wall 11a in order to slide the pressing portion 74 of the key top 72 toward the insertion portion 12 from a position obliquely upward with respect to the surface of the upper wall 11a of the case 10. However, as long as the position from the diagonally upward position to the insertion portion 12 is formed in a linearly open shape, it does not necessarily have to be cut from the outer peripheral side surface of the upper wall 11a of the case 10.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. It should be noted that any shape, structure, and material not directly described in the specification and drawings are within the scope of the technical idea of the present invention as long as the effects and advantages of the present invention are exhibited. For example, in each of the embodiments described above, the structure of the first switch 45 of the press switch unit 2 (2-2) is configured such that the contact pattern 37 is provided on the surface of the single substrate unit 31 and the connection pattern 40 is provided on the outer periphery thereof. In addition, a switch having a structure in which a reversal plate 21 made of a dome-shaped elastic metal plate is attached so that the outer periphery of the connection pattern 40 is in contact with the connection pattern 40, and the structure of the second switch 46 is replaced by two substrate portions 32, Although the switch has a structure in which a pair of contact patterns 38 and 39 provided on 33 are opposed to each other with a predetermined interval, these are only examples, and both the first switch 45 and the second switch 46 are The same structure as any one of these may be used, or a structure other than these may be used. In short, a switch having any structure may be used as long as the switch is turned on when pressed. Each switch is not limited to the one provided on the flexible circuit board, and may be a switch provided on the hard board.

  Moreover, although the press switch part 2 (2-2) of the said embodiment is provided with the two-stage switch which piled up the 1st switch 45 and the 2nd switch 46, the switch with which the press switch part 2 is provided. Is not limited to a two-stage switch, but may be a single-stage switch. In that case, for example, only the first switch 45 is provided, the operation type object 22 and the board portions 32 and 33 are omitted, and the case 10 is provided with an upper wall that covers the upper portion of the first switch 45. What is necessary is just to be able to omit the accommodating part 11 which accommodates the action | operation type | mold thing 22. FIG. In addition, the pressing switch unit 2 may be configured to include three or more stages of switches.

  Further, the shape of the mounting member 50 and the shape of the exterior case 70 shown in the above embodiment are only examples, and these are the pressing portion 74 of the key top 72 (72-2) and the pressing switch portion 2 (2- 2) This is merely an example in which the case 10 (10-2) cannot be inserted into the insertion portion 12 from a position directly above the surface of the upper wall 11a of the case 10 (10-2). It is not limited to.

  Further, the key top 72 of the first embodiment has a so-called cantilever hinge structure in which one hinge portion 76 is provided and the base portion 75 is supported by the hinge portion 76 so as to be movable up and down. However, the structure of the key top 72 is not limited thereto. For example, a hinge structure may be used in which the hinge portion 76 is connected to both sides of the base portion 75 and the base portion 75 is supported by the two hinge portions 76. Alternatively, for example, a structure in which three or more hinge portions 76 are connected to support the base portion 75 may be employed. Further, the shape of the hinge portion 76 is not limited to the above. In short, any structure may be used as long as the base 75 can be supported in the opening 71a so as to be movable up and down.

  Further, in the first embodiment, the case where the key top 72 is attached to the exterior case 70 that is a fixing member has been described. You may attach to a member. That is, as in another configuration example of the switch mechanism 1 shown in FIG. 11, an attachment member (attachment plate) 90 that is a fixing member is installed on the lower surface side of the surface 71 of the exterior case 70, and the key top is attached to the attachment member 90. 72 can also be attached. The attachment member 90 is fixed to the exterior case 70 at a portion (not shown). A columnar fixing portion 91 provided at the tip of the hinge portion 76 of the key top 72 is attached to the upper surface of the attachment member 90. The fixing portion 91 is attached to the attachment member 90 by inserting a protrusion 91 a provided on the lower surface of the fixing portion 91 into the attachment fixing portion 90 a formed of a through hole provided in the attachment member 90, and This is done by heat caulking the tip of the protruding protrusion 91a.

2 is a schematic side sectional view of the switch mechanism 1. FIG. 3 is an exploded perspective view of the switch mechanism 1. FIG. It is the perspective view which looked at the case 10 from the lower surface side. 3 is an exploded perspective view of a switch member 20. FIG. 5 is a schematic sectional side view for explaining a procedure when the pressing switch unit 2 is assembled to the exterior case 70. FIG. It is a schematic sectional side view of the switch mechanism 1-2. It is a perspective view of case 10-2. FIG. 6 is a perspective view for explaining a procedure when the pressing switch section 2-2 is assembled to the exterior case 70. FIG. 5 is a schematic sectional side view for explaining a procedure when the pressing switch section 2-2 is assembled to the exterior case 70. It is a schematic sectional side view for demonstrating the procedure which assemble | attaches the press switch part 2-2 to the exterior case 70 of another shape. 4 is a schematic side sectional view showing another configuration example of the switch mechanism 1. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Switch mechanism 1-2 Switch mechanism 2 Press switch part 2-2 Press switch part 10 Case 11 Storage part 11a Upper wall 12 Insertion part 13 Slit part 20 Switch member 21 Reverse plate 22 Actuation object 23 Press part 24 Recessed part 30 Flexible circuit Substrate 31 Substrate part 32 Substrate part 33 Substrate part 37 Contact pattern 38 Contact pattern 39 Contact pattern 40 Connection pattern 41 Spacer layer 45 First switch 46 Second switch 50 Attachment member 52 Attachment part 60 Electronic component 70 Exterior case (fixing member) )
72 Key Top 72-2 Key Top 74 Pressing part 76 Hinge part 90 Mounting member (fixing member)

Claims (6)

A key top attached to the fixed member to be movable up and down;
A switch that is pressed by a pressing portion provided on the key top; and a case having an upper wall that covers an upper portion of the switch, and an insertion portion through which the pressing portion is inserted is provided on the upper wall of the case. Prepare the pressing switch part,
When assembling the pressing switch portion to the fixing member, the pressing switch portion of the key top allows the pressing portion of the key top to be inserted into the insertion portion from a position obliquely above or laterally with respect to the upper wall surface of the case. Mounting method to
The key top is previously attached to the fixing member via a flexible hinge part,
A method of attaching the key top to the pressing switch portion, wherein the pressing portion is brought into contact with the upper wall of the case to bend the hinge portion and lift the key top, and then inserted into the insertion portion. . A key top attached to the fixed member to be movable up and down;
A switch that is pressed by a pressing portion provided on the key top; and a case having an upper wall that covers an upper portion of the switch, and an insertion portion through which the pressing portion is inserted is provided on the upper wall of the case. Prepare the pressing switch part,
When assembling the pressing switch portion to the fixing member, the pressing switch portion of the key top allows the pressing portion of the key top to be inserted into the insertion portion from a position obliquely above or laterally with respect to the upper wall surface of the case. Mounting method to
A slit portion communicating with the insertion portion is formed on the upper wall of the case,
A method for attaching a key top to a press switch part, wherein the pressing part is inserted into the insertion part after the pressing part is slid into the slit part. A pressing switch portion including a switch and a case having an upper wall that covers the upper portion of the switch, and provided with an insertion portion for inserting a pressing portion of a key top that presses the switch on the upper wall of the case. There,
A press switch portion, wherein a slit portion is formed in the upper wall of the case, the slit portion being in communication with the insertion portion and slidingly inserting the pressing portion of the key top. A first switch, an actuating object having a pressing portion for pressing the first switch on its lower surface, a second switch disposed on the upper surface of the actuating object, and moving the actuating object up and down And a case having a storage portion that can be freely stored and an upper wall that covers an upper portion of the storage portion, and a pressing portion of a key top that presses the second switch is inserted through the upper wall of the case. A press switch part provided with an insertion part,
A press switch portion, wherein a slit portion is formed in the upper wall of the case, the slit portion being in communication with the insertion portion and slidingly inserting the pressing portion of the key top. It is a press switch part according to claim 3 or 4,
The slit portion is formed in a shape in which the pressing portion of the key top is slid into the insertion portion from a position obliquely above or laterally with respect to the surface of the upper wall of the case. Press switch part. In the press switch part according to claim 3 or 4 or 5,
The press switch part, wherein the slit part is formed to communicate with the insertion part from the outer periphery of the upper wall of the case.

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