JP2012185929A - Push switch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a push switch device whose profile can be made thinner by reducing the size in a vertical direction.SOLUTION: When a push button 40 is pushed, first and second pressing members 20 and 30 are relatively rotated in mutually opposite directions. Pressing direction conversion means converts the relative rotational motion of the first and second pressing members 20 and 30 into pressing motion in a switching direction. Thus, pressing protrusions on the first pressing member 20 can vertically press at the center of the apex of a movable terminal 14 with accuracy. This improves a click feeling produced when the movable terminal 14 is elastically deformed and restored to its original form, and also minimizes sliding friction generated between the movable terminal 14 and the pressing protrusions on the pressing member, thereby preventing degradation in operability due to wear and reduction of component life. Also, the operability of the push button 40 is improved because the push button 40 is excellent in straight-advancing performance during operation so that further repulsive force is not generated, except for that by the elastic deformation of the movable terminal 14.

Description

  The present invention relates to a push switch device. More specifically, the push switch device is arranged so that the push direction of the push button for the switch operation is orthogonal to the switching direction of pushing the apex of the dome-shaped movable terminal downward. Therefore, the present invention relates to a push switch device that can be reduced in thickness by reducing the vertical size.

  In general, a push switch device that is often used in a mobile phone, a game machine, various audio devices, etc. includes a housing molded of insulating resin, a dome-shaped movable terminal and a plurality of fixed terminals provided in the housing, A push button that protrudes from the housing and operates the movable terminal is provided. Therefore, when the apex portion of the movable terminal is pressed by the push operation of the push button, the apex portion is elastically deformed and restored downward to electrically connect or release the plurality of fixed terminals, thereby performing a switch function.

  Such a push switch device reduces the vertical size by arranging the direction in which the apex of the movable terminal is pressed and elastically deformed downward, that is, the push button is perpendicular to the switching direction. We are trying to make it thinner.

  For example, in Patent Document 1, as shown in FIG. 8, the switching direction in which the apex portion of the dome-shaped movable terminal 130 is pressed and elastically deformed downward is arranged so that the pressing direction of the push button 110 is orthogonal. Is disclosed.

  However, when the push switch device is pushed down, the push portion 111 formed at the tip of the push button 110 pushes the apex portion of the dome-shaped movable terminal 130 while moving in the diagonal direction downward by the inclined plate 140. To come. As a result, the click feeling generated when the movable terminal property is deformed is reduced as compared with the existing method in which the push button is arranged in the same direction with respect to the switching direction of the movable terminal. In addition, the connecting portion 112 bends downward as the push portion 111 is lowered. As a result, the straightness of the push button 110 is reduced, and the repulsive force due to the bending deformation of the connecting portion 112 applies the pushing force of the push button 110 to significantly reduce the operability of the push button 110.

  Further, since the position of the contact point between the push portion 111 of the push button 110 and the movable terminal 130 moves between the position away from the center of the vertex of the movable terminal 130 and the center of the vertex, it is caused by sliding friction by the moving distance. Wear begins to occur. The occurrence of wear in such a switch operation process has a problem of not only reducing the function and operability of the push switch device but also shortening the life of the parts.

Korean Patent Registration No. 10-755223

  Accordingly, the present invention, which has been made to solve the conventional problems as described above, is a push switch device in which the switching direction of the dome-shaped movable terminal and the pressing direction of the push button are arranged to be orthogonal to each other. A push switch device capable of minimizing wear between a movable terminal and a pressing member that presses the movable terminal by improving the click feeling at the time of switch operation by pushing the pressing force accurately and vertically below the center of the movable terminal. The purpose is to provide.

  Another object of the present invention is to improve push button operability by improving the straightness of the push button and minimizing the repulsive force generated in addition to the repulsive force due to the elastic deformation of the movable terminal. It is to provide a switch device.

  In order to achieve the above-described object, the present invention provides a housing, first and second terminals each having a connecting piece disposed on the bottom surface of the housing, and a vertex portion provided inside the housing by pressing. In a push switch device having a dome-shaped movable terminal that is elastically deformed and restored to electrically connect or open the connection piece of the first terminal and the connection piece of the second terminal, the push switch device is located above the movable terminal. A first pressing member provided in the housing, wherein the first pressing member includes a pressing protrusion that contacts the center of the apex of the movable terminal, and rotates about a switching direction in which the apex of the movable terminal is pressed downward and elastically deformed; A second pressing member provided in the housing so as to overlap the first pressing member and rotate about the same rotation center axis as the first pressing member; one side wall of the housing A push button that penetrates and is partially exposed to the outside and linearly moves in a pushing direction orthogonal to the switching direction of the movable terminal to relatively rotate the first and second pressing members in opposite directions; and The first and second pressing members are formed on the first and second pressing members, and the relative rotational movements of the first and second pressing members are converted into a pressing movement in the switching direction in which the pressing protrusion of the first pressing member presses the apex of the movable terminal downward. The push switch device is characterized by including a pressing direction changing means.

  In another aspect of the present invention, a housing, a connection piece of a first terminal and a second terminal provided on the bottom surface of the housing which are provided inside the housing and whose top portion is elastically deformed and restored by pressing are restored. In the push switch device having a dome-shaped movable terminal for electrically connecting or releasing the connection piece, the push switch device is provided with a pressing protrusion located at the upper part of the movable terminal and in contact with the center of the vertex, and the vertex of the movable terminal is directed downward. A first pressing member provided in the housing so as to rotate about a switching direction for pressing and elastically deforming; a second pressing member provided in the housing overlying the first pressing member; A push that penetrates one side wall and is partially exposed to the outside and linearly moves in a push direction orthogonal to the switching direction of the movable terminal to rotate the first push member. And the rotation movement of the first pressing member is converted into the pressing movement in the switching direction in which the pressing protrusion of the first pressing member presses the apex of the movable terminal downward. The push switch device is characterized by including a pressing direction changing means.

  The pressing direction changing means according to the present invention includes a plurality of inclined protrusions formed on an upper surface of the first pressing member and arranged on a circumference centering on a rotation center axis of the first pressing member, 3. It comprises a plurality of inclined grooves formed on the bottom surface of the two pressing members and formed in a shape corresponding to the inclined protrusions so as to be inserted into the plurality of inclined protrusions, respectively. There is a feature in the push switch device.

  Further, the present invention is characterized in that a support shaft projects from the upper surface rotation center of the first pressing member, and a support hole into which the support shaft is inserted is formed at the bottom surface rotation center of the second pressing member. The push switch device according to claim 3 is characterized.

  Further, according to the present invention, the configuration of the reverse relative rotation of the first and second pressing members by the push button protrudes from one outer peripheral surface of the first and second pressing members, and is spaced 180 degrees from each other. A pair of rotating projections disposed on the push button and bifurcated from the push button, each of which has a tip positioned close to the pair of rotating projections and moves in the pushing direction of the push button. 2. The push switch device according to claim 1, further comprising a push bar that presses the first and second rotating protrusions to rotate the first and second pressing members in opposite directions.

  According to the characteristic configuration of the present invention described above, when the push button is operated, the first and second pressing members are relatively rotated in opposite directions, and the pressing direction changing means is the first and second pressing members. Therefore, the pressing projection of the first pressing member can accurately press the center of the apex of the movable terminal vertically.

  Therefore, as with the method in which the switching direction of the movable terminal and the push direction of the push button are configured to be the same, excellent click feeling can be maintained when the movable terminal is elastically deformed and restored, and the pressing protrusions of the movable terminal and the first pressing member Sliding friction generated from the gap can be minimized to prevent deterioration of operability due to wear and shortening of the service life of parts. Further, when the push button is operated, it is excellent in straightness, and another repulsive force is not generated in addition to the repulsive force due to the elastic deformation of the movable terminal, so that the operability of the push button is improved.

  In addition, the relative rotation angle of the first and second pressing members of the present invention is halved compared to the configuration of rotating any one of the first and second pressing members. Can be reduced. As a result, the moving distance of the push button in the push direction can be reduced to ½, so that the operability of the push button is further improved.

1 is a perspective view of a push switch device according to the present invention. 1 is an exploded perspective view of a push switch device according to the present invention. 3 (A) and 3 (B) are longitudinal sectional views showing the operating state of the push switch device according to the present invention. It is the cross-sectional view of the housing which showed the installation state of the 1st and 2nd fixed terminal in the push switch apparatus which concerns on this invention. 5A and 5B are cross-sectional views showing the operating state of the push switch device according to the present invention. 6 (A) and 6 (B) are cross-sectional views showing other embodiments of the push switch device according to the present invention. 7A is a cross-sectional view taken along the line AA in FIGS. 5A and 6A, and FIG. 7B is a cross-sectional view taken along the line BB in FIGS. 5B and 6B. FIG. FIG. 8 is a cross-sectional view showing a conventional push switch device.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  1 and 2 are a perspective view and an exploded perspective view showing a push switch device of the present invention. The push switch device of the present invention includes a hexahedral housing 10 having an internal space. The housing 10 is configured by injection molding of an insulating resin. The upper portion is open so that components can be provided therein, and the open upper portion is covered with a lid 11 after the components are installed.

  The engaging structure of the housing 10 and the lid 11 is formed with engaging protrusions 10a on both side walls of the housing 10, and the lid 11 is formed with engaging grooves 11a into which the engaging protrusions 10a are inserted and locked. Constitute.

  The housing 10 is provided with first and second fixed terminals 12 and 13 for a switching function, and a movable terminal 14 for connecting or opening the first and second fixed terminals 12 and 13.

  As shown in FIGS. 2 and 4, the first and second fixed terminals 12 and 13 are made of a conductive metal, and are molded together and embedded in the housing 10 when the housing 10 is injection molded. The first and second fixed terminals 12 and 13 include external terminals 12a and 13a exposed at lower portions of both side walls of the housing 10 for electrical connection with the outside, respectively, and the inner bottom surface of the housing 10 is connected to the movable terminal 14. Connection pieces 12b and 13b exposed for connection are provided. At this time, the connection piece 12 b of the first fixed terminal 12 is arranged at the center of the bottom surface of the housing 10, and the connection piece 13 b of the second fixed terminal 13 is arranged at two locations on both sides of the bottom corner portion of the housing 10.

  As shown in FIGS. 2 and 3A, the movable terminal 14 is made of stainless steel having excellent conductivity and elasticity, is formed in a dome shape, and is provided on the bottom surface of the housing 10. The apex portion of the movable terminal 14 that is convexly convex upward is positioned on the connection piece 12 b of the first fixed terminal 12, and the corner portion of the movable terminal 14 is provided in contact with the connection piece 13 b of the second fixed terminal 13. Therefore, when the vertex of the movable terminal 14 is pressed and elastically deformed downward, the vertex of the movable terminal 14 comes into contact with the connection piece 12b of the first fixed terminal 12 as shown in FIG. The first and second fixed terminals 12 and 13 are electrically connected. On the other hand, when the pressing force is removed, as shown in FIG. 3A, the apex of the movable terminal 14 returns to the original position by the elastic restoring force, and the first and second fixed terminals 12 and 13 are electrically connected. Opened.

  The structure for pressing the apex portion of the movable terminal 14 passes through the first and second pressing members 20 and 30 provided vertically above the movable terminal 14 in the housing 10 and one side wall of the housing 10. The push button 40 is provided. These components are made of insulating resin.

  The first pressing member 20 provided directly above the movable terminal 14 is formed in a disk shape, and the bottom surface includes a pressing protrusion 21 that contacts the center of the apex of the movable terminal 14, and the pressing protrusion 21 is the movable terminal 14. It is provided in the housing 10 so as to rotate about a switching direction in which the apex is pressed vertically downward and elastically deformed.

  The second pressing member 30 provided on the first pressing member 20 is also formed in a disk shape and is provided in the housing 10 so as to rotate around the same central axis as the first pressing member 20. .

  As shown in FIGS. 2 and 5A, the housing 10 supports the first and second pressing members 20 and 30 in a rotatable manner. It is preferable that an arcuate wall 10b corresponding to the outer peripheral surface of the two pressing members 20 and 30 is erected and an arcuate surface 10c is formed on one side wall facing the arcuate wall 10b.

  Further, a support shaft 22 protrudes from the upper surface rotation center of the first pressing member 20, and a support hole 31 into which the support shaft 22 is inserted is formed at the rotation center of the second pressing member 30. As a result, the first and second pressing members 20 and 30 are supported by mutual rotation, and the first pressing member 20 is linear with respect to the second pressing member 30 in the axial direction of the support hole 31 and the support shaft 22, that is, in the switching direction. Supported to exercise.

  Meanwhile, the push button 40 passes through one side wall of the housing 10 and is partially exposed to the outside. The push button 40 is disposed so that the push direction is orthogonal to the switching direction, and the first and second pressing members 20, 30 is configured to relatively rotate in opposite directions.

  The relative rotation configuration of the first and second pressing members 20 and 30 by the pressing operation of the push button 40 is one side of the first and second pressing members 20 as shown in FIGS. 2 and 5A. A pair of rotary projections 23 and 32 that are respectively provided on the outer peripheral surface and arranged at an interval of 180 degrees, and are formed by bifurcating from the push button 40, the tip of the pair of rotary projections And push bars 41 and 42 located near 23 and 32, respectively. Therefore, when the push button 40 is pushed down as shown in FIG. 5B, the push bars 41 and 42 on both sides simultaneously press the rotating protrusions 23 and 32 of the first and second pressing members 20 and 30. The first and second pressing members 20 and 30 rotate relative to each other by a predetermined angle in opposite directions.

  Further, the relative rotation configuration of the first and second pressing members 20 and 30 by the pressing operation of the push button 40 is limited to the configuration in which the first and second pressing members 20 and 30 described above are relatively rotated in opposite directions. Alternatively, only one of the first and second pressing members 20 and 30 may be rotated.

  For example, FIGS. 6A and 6B show a configuration in which only the first pressing member 20 is rotated by a pressing operation of the push button 40. That is, among the push bars 41 and 42 of the push button 40, the length of the push bar 42 on the second push member 30 side is shortened, and the push bar 42 is rotated by the push operation of the push button 40. This is achieved by preventing the protrusion 32 from reaching the protrusion 32 and inserting the rotation protrusion 32 of the second pressing member 30 into a fixed groove 10d formed on the inner wall surface of the housing 10 so that the second pressing member 30 does not rotate. it can.

  Although not shown, the above-described configuration can be applied in the opposite direction so that the first pressing member 20 does not rotate and only the second pressing member 30 rotates.

  At this time, the configuration in which only one of the first and second pressing members 20 and 30 is rotated is compared with the configuration in which both the first and second pressing members 20 and 30 are relatively rotated in opposite directions. The same relative rotation angle cannot be obtained unless the push direction movement distance of the button 40 is set to double.

  Referring to FIGS. 2, 3A, and 5A, the first and second pressing members 20 and 30 are configured so that the relative rotational movement of the first and second pressing members 20 and 30 is the first pressing force. A pressing direction changing means for changing to a pressing movement of the member 20 in the switching direction is provided.

  The pressing direction changing means protrudes from the upper surface of the first pressing member 20 and has a plurality of inclined protrusions 24 arranged on a circumference around the rotation center axis of the first pressing member 20, and the second pressing member It comprises a plurality of inclined grooves 33 formed on the bottom surface of the member 30 and formed in a corresponding shape so as to be inserted into the plurality of inclined protrusions 24, respectively. The inclined protrusions 24 and the inclined grooves 33 are preferably formed at four positions at equal intervals of 90 degrees.

  Therefore, as shown in FIGS. 5A and 7A, the first and second tilted projections 24 of the first pressing member 20 are inserted into the tilted grooves 33 of the second pressing member 30. When the pressing members 20 and 30 are rotated in the opposite direction relative to each other and the inclined protrusions 24 and the inclined grooves 33 are overlapped as shown in FIG. 5B and FIG. 1 The pressing member 20 moves in the switching direction, that is, the direction orthogonal to the pressing direction of the push button 40. As a result, as shown in FIG. 3B, the pressing protrusion 21 of the first pressing member 20 accurately presses the center of the apex of the movable terminal 14 vertically and elastically deforms downward.

  At this time, the inclined protrusion 24 of the first pressing member 20 is configured to have a shape obtained by cutting a part of both side surfaces in the truncated conical shape in the circumferential direction of the first pressing member 20. Accordingly, the contact area between the first and second pressing members 20 and 30 can be reduced, and the reverse relative rotational movement can be performed more smoothly. In addition, the inclined groove 33 of the second pressing member 30 is configured to have a shape in which a part of the inner surface is cut in the circumferential direction of the second pressing member 30 in the truncated cone shape, and the outer diameter of the second pressing member 30 is increased. Can be designed smaller.

  Further, as shown in FIG. 3A, the movable terminal 14 provided in the housing 10 is covered with a thin protective sheet 15 and blocked to prevent the movable terminal 14 from being adversely affected by moisture.

  The operation of the present invention configured as described above will be described as follows.

  When the push button 40 is depressed in the state shown in FIG. 3A and FIG. 5A, the push bars 41 and 42 of the push button 40 move linearly in the push direction, and the first and second push members 20 and 30 are moved. The rotary projections 23 and 32 are respectively pressed. Accordingly, the first and second pressing members 20 and 30 are relatively rotated by a predetermined angle in opposite directions with the switching direction orthogonal to the pressing direction of the push button 40 as the central axis.

  When the first and second pressing members 20 and 30 are rotated relative to each other in the opposite directions, the inclined protrusion 24 of the first pressing member 20 and the second pressing member 30 as shown in FIGS. 5B and 7B. The first pressing member 20 moves linearly in the switching direction with respect to the second pressing member 30 while the inclined groove 33 is removed. As a result, as shown in FIG. 3B, the pressing protrusion 21 of the first pressing member 20 presses the center of the apex of the dome-shaped movable terminal 14 vertically and elastically deforms downward. Accordingly, the apex of the movable terminal 14 comes into contact with the connection piece 12b of the first fixed terminal 12, and the first fixed terminal 12 and the second fixed terminal 13 are electrically connected.

  Subsequently, when the pressing force of the push button 40 is removed, the apex portion returns to the original position as shown in FIG. 3A due to the elastic restoring force of the movable terminal 14, and the connection piece 12 b of the first fixed terminal 12. It will come away from. Accordingly, the first fixed terminal 12 and the second fixed terminal 13 are also electrically opened, and at the same time, the first pressing member 20 is further lifted by the elastic restoring force of the movable terminal 14 and is shown in FIG. As shown in FIG. 7A, the inclined protrusion 24 is aligned with the inclined groove 33 of the second pressing member 30, so that the first and second pressing members 20, 30 and the push button 40 are not pressed. It will return to the state of.

  As described above, according to the present invention, when the push button 40 is pressed once, the vertex portion of the movable terminal 14 is elastically deformed and restored to electrically connect and release the first and second fixed terminals 12 and 13. The switch function is performed smoothly. In addition, by arranging the push button 40 so that the push direction of the push button 40 is orthogonal to the switching direction in which the apex of the movable terminal 14 is elastically deformed downward, the vertical size of the push switch device is greatly reduced and the thickness is reduced. Can be planned.

  In particular, according to the present invention, the pressing projection 21 of the first pressing member 20 presses the center of the apex portion of the movable terminal 14 accurately and vertically by the pressing operation of the push button 40, so that the click feeling is excellent. Further, compared to the conventional configuration in which the apex portion of the movable terminal 14 is pressed diagonally, the sliding friction between the movable terminal 14 and the pressing protrusion 21 of the first pressing member 20 is minimized, and the operational feeling due to wear is reduced. Deterioration and shortening of component life can be prevented.

  Further, the present invention converts the rotational movement of the first and second pressing members 20 and 30 by the pressing operation of the push button 40 into the linear movement in the switching direction and elastically deforms the apex portion of the movable terminal 14. In addition to the repulsive force due to the elastic deformation of the movable terminal 14, another repulsive force is not further generated. Accordingly, the straightness of the push button 40 is improved, the pushing force of the push button 40 is reduced, and the switch operation feeling can be improved.

  In addition, the configuration in which the first and second pressing members 20 and 30 of the present invention are relatively rotated simultaneously in opposite directions is relatively rotated compared to the configuration in which one of the first and second pressing members 20 and 30 is rotated. The angle can be reduced to ½, whereby the movement distance of the push button 40 in the push direction can be reduced to ½, and the operability of the push button 40 can be further improved. Therefore, it can be said that the industrial applicability of the present invention is extremely high.

  On the other hand, while the invention has been described in terms of several preferred embodiments within the present specification, many variations and modifications will occur to those skilled in the art without departing from the scope and spirit of the invention as disclosed in the appended claims. It should be understood that can be made.

DESCRIPTION OF SYMBOLS 10 Housing 11 Lid 12 1st fixed terminal 13 2nd fixed terminal 14 Movable terminal 20 1st press member 21 Press protrusion 22 Support shaft 24 Inclination protrusion 30 2nd press member 31 Support hole 33 Inclination groove 40 Push button 41, 42 Push bar

Claims (5)

A first terminal and a second terminal each provided with a connection piece disposed on a bottom surface in the housing, the housing, and a connection between the first terminal by being elastically deformed and restored by a pressure provided inside the housing; In a push switch device comprising a dome-shaped movable terminal for electrically connecting or releasing the connecting piece of the piece and the second terminal,
A pressing protrusion located on the movable terminal and in contact with the center of the apex of the movable terminal is provided in the housing so as to rotate about a switching direction in which the apex of the movable terminal is pressed downward and elastically deformed. A first pressing member provided;
A second pressing member provided in the housing so as to overlap the first pressing member and rotate about the same rotation center axis as the first pressing member;
A part of the housing is exposed to the outside through one side wall of the housing, and linearly moves in a pushing direction orthogonal to the switching direction of the movable terminal to relatively rotate the first and second pressing members in opposite directions. A push button; and a switching direction formed on the first and second pressing members for causing the first and second pressing members to rotate relative to each other so that the pressing protrusion of the first pressing member presses the apex of the movable terminal downward. A push switch device comprising a pressing direction changing means for changing to a pressing motion. The first terminal connecting piece and the second terminal connecting piece provided on the bottom surface of the housing are elastically deformed and restored by pressing, and are electrically connected or opened. In a push switch device comprising a dome-shaped movable terminal,
A pressing protrusion located at the upper part of the movable terminal and in contact with the center of the apex is provided in the housing so as to rotate about a switching direction in which the apex of the movable terminal is pressed downward and elastically deformed. A first pressing member;
A second pressing member provided in the housing overlying the first pressing member;
A push button that passes through one side wall of the housing and is partially exposed to the outside and linearly moves in a push direction orthogonal to the switching direction of the movable terminal to rotate the first push member; and And a pressing direction changing means that is formed on the second pressing member and converts the rotational movement of the first pressing member into a pressing movement in the switching direction in which the pressing protrusion of the first pressing member presses the apex of the movable terminal downward. A push switch device characterized by that.   The pressing direction changing means is formed on the upper surface of the first pressing member, and has a plurality of inclined protrusions arranged on a circumference around the rotation center axis of the first pressing member, and a bottom surface of the second pressing member. The push switch device according to claim 1, further comprising a plurality of inclined grooves formed in a shape corresponding to the inclined protrusions so as to be respectively inserted into the plurality of inclined protrusions.   4. The support shaft according to claim 3, wherein a support shaft projects from the upper surface rotation center of the first pressing member, and a support hole into which the support shaft is inserted is formed at the bottom surface rotation center of the second pressing member. Push switch device.   The first and second pressing members are rotated in the opposite direction relative to each other by the push button. The first and second pressing members have a pair of protrusions projecting on one outer peripheral surface of the first and second pressing members and spaced apart from each other by 180 degrees. And the first and second rotating projections when the push button moves in the pushing direction with the tips thereof being located near the pair of rotating projections, respectively. The push switch device according to claim 1, further comprising: a push bar that presses the first and second pressing members to rotate in opposite directions.

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