JP2007123459A - Rotating electrical component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotating electrical component hardly changing in spring pressure to reduce click feeling of individual rotating electric components and reduce variation of operation torque or the like, even if heat is applied upon reflow soldering. <P>SOLUTION: The rotating electric component comprises: a rotation-operated rotary shaft 2; a housing 1 for rotatably holding the rotary shaft 2; a rotation detection means composed of a slider 14, and a conductive patterns 6, 7 for detecting the rotation of the rotary shaft 2; a housing recess 4c constituting a housing part provided in a housing 4; and a leaf spring 3 provided rotatably together with the rotary shaft 2, being deformable in the axial direction of the rotary shaft 2, and exposed into the housing recess 4c and disposed so that its elastic force is energized to a wall 4f side intersecting the axial direction of the rotary shaft 2. The leaf spring 3 is formed with a flat metal plate, and is disposed like a flat plate along a flat plane orthogonal to the axial direction of the rotary shaft 2 in an assembled state in the housed recess 4c. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a structure of a rotating electrical component with a click feeling during a rotating operation used in various electronic devices.

  As the structure of the conventional rotary electric component, the rotary body 23 is rotated by rotating the operation shaft 53, the resistance value of the variable resistor portion at the rear thereof changes, and the front surface of the rotary body 23 is changed. There is known a configuration in which the radial uneven portion 25 of the click plate 24 is configured such that the elastic contact protrusion 22A of the spring body 22 elastically slides to generate a click feeling (see, for example, Patent Document 1). .

  FIG. 19 shows the structure of a rotary variable resistor which is this conventional rotary electric component. FIG. 19 is a cross-sectional view showing a conventional rotary variable resistor.

  In the figure, a conventional rotary variable resistor has a box-shaped case 21 formed by zinc die casting or the like, 22 is a spring body, and 23 is a rotary body caulked so as to rotate together with the rotary operation shaft 53. The spring body 22 is provided with two C-shaped elastic arm portions 22C and 22D having elastic contact protrusions 22A and 22B at the tips, with the support portion 22E as the center, and the support portion 22E is provided on the rear surface of the front wall 21A of the case 21. It is fitted in the recess 21B and is held so as to be swingable in the spring deflection directions E and F.

  On the other hand, a rotating body 23 is fixed to an extension 53A of a rotation operation shaft 53 rotatably held by a cylindrical bearing 52 at the center of a front wall 21A of the case 21, and a click plate 24 on the front thereof In addition, a continuous radial uneven portion 25 having a constant pitch and a smooth sliding surface 26 having a height difference are formed, and the elastic contact portions 22A and 22B of the spring body 22 are respectively provided with the radial uneven portion 25 and the sliding surface. 26 is configured to slide elastically.

  By rotating the operating shaft 53 of the rotary operation type variable resistor configured as described above, the rotating body 23 is rotated, and the resistance value of the variable resistor section at the rear thereof changes, and the rotating body The elastic contact portion 22A of the spring body 22 elastically slides on the radial concavo-convex portion 25 of the click plate 24 on the front surface 23 to cause a click feeling.

  In this case, one elastic contact protrusion 22B of the spring body 22 is elastically slid by sliding on a smooth sliding surface 26 having a height difference, but the spring of the elastic contact protrusion 22B is maintained. By increasing the amount of bending and increasing the spring pressing force, the spring pressing force of the other elastic contact projection 22A can be increased.

Japanese Patent No. 3458550

  However, in a conventional rotating electrical component, when reflow soldering and high temperature heat is applied to attach the rotating electrical component to a printed circuit board, a spring body made of a metal plate that is largely bent is used. There is a problem that stress relaxation occurs, the spring pressure changes, and variations occur in the click feeling and operation torque of individual rotating electrical components.

  Therefore, the present invention solves the above-described problems, and even when heat is applied during reflow soldering, the spring pressure is difficult to change, and there is little variation in the click feeling and operation torque of individual rotary electrical components. The purpose is to provide parts.

  In order to solve the above-mentioned problems, the present invention provides, as a first solution, a rotating shaft that is rotated, a housing that rotatably holds the rotating shaft, a slider that detects the rotation of the rotating shaft, and a conductive member. Rotation detecting means comprising a pattern, a housing portion provided in the housing, and rotatably provided together with the rotating shaft, and can be bent in the axial direction of the rotating shaft, and is exposed in the housing portion and rotated. A leaf spring disposed on the side of the wall that intersects the axial direction of the shaft so that an elastic force is urged, and the leaf spring is formed of a flat metal plate and is incorporated in the housing portion. In such a state, a flat plate is arranged along a plane orthogonal to the axial direction of the rotation shaft.

As a second solution, a click plate provided rotatably with the rotary shaft is disposed between the wall portion and the plate spring, and the click plate faces the plate spring. A protrusion protruding on one side is provided, and the leaf spring is provided with an elastic arm that abuts the protrusion and elastically urges the click plate toward the wall.
As a third solving means, two protrusions of the click plate are provided at positions opposing each other in the radial direction across the rotation center of the rotation shaft, and the elastic members correspond to the two protrusions. Two arms are provided on the leaf spring.
Further, as a fourth solving means, an engaging portion made of a protrusion is provided on the other surface side of the click plate, and the click portion for engaging and disengaging the engaging portion on the wall portion causes a click feeling. When the projection is provided, and when the rotation shaft is rotated and the engagement portion and the click projection are engaged, the elastic arm of the leaf spring is pressed by the protrusion of the click plate, The elastic arm is configured to be able to bend on the side opposite to the click plate.
Further, as a fifth solving means, the click plate and the wall are provided with a plurality of the engaging portions and click convex portions, and when the rotating shaft rotates, the plurality of engaging portions and It was set as the structure which the convex part for a click engages / disengages simultaneously.
As a sixth solution, the plurality of engaging portions and click convex portions are provided at positions having different diameters from the rotation center of the rotation shaft.

  As described above, the rotary electric component of the present invention includes a rotation shaft that is rotated, a housing that rotatably holds the rotation shaft, a slider that detects rotation of the rotation shaft, and a rotation detection that includes a conductive pattern. Means, a housing part provided in the housing, a wall part side which is provided rotatably in the axial direction of the rotary shaft and can be deflected in the axial direction of the rotary shaft and which is exposed in the housing part and intersects the axial direction of the rotary shaft And a leaf spring disposed so as to be urged by an elastic force. The leaf spring is formed of a flat plate-like metal plate and is orthogonal to the axial direction of the rotating shaft in a state where the leaf spring is incorporated in the housing portion. Since it is arranged in a flat shape along the plane, it is not necessary to bend the leaf spring before assembling, so even if heat is applied when reflow soldering after assembling, the spring force of the leaf spring is not affected. Rotating type electric power It can be made small variations of parts such as click feeling and operating torque.

In addition, a click plate provided so as to be rotatable together with the rotation shaft is disposed between the wall portion and the plate spring, and the click plate is provided with a protrusion protruding on one side facing the plate spring. Since an elastic arm that abuts against the protrusion and elastically urges the click plate toward the wall portion is provided, the elastic urging force of the leaf spring can be reliably transmitted to the click plate.
In addition, two click plate protrusions are provided at opposite positions in the radial direction across the rotation center of the rotation shaft, and two elastic arms are provided on the leaf springs corresponding to these two protrusions. Therefore, the leaf spring does not tilt in one of the radial directions across the rotation center of the rotation shaft, and the click plate can be stably elastically biased.
In addition, an engaging portion made of a protrusion is provided on the other surface side of the click plate, and a click convex portion that engages and disengages the engaging portion to cause a click feeling is provided on the wall portion, and the rotation shaft rotates. When the engaging portion and the click convex portion are engaged, the elastic arm of the leaf spring is pressed by the protrusion of the click plate, and the elastic arm can be bent to the opposite side of the click plate. Since the spring is arranged in a flat plate shape that does not require large bending in the initial state where the rotating shaft is not rotated, a click mechanism that does not impair the touch due to heat can be obtained.
Further, the click plate and the wall portion are provided with a plurality of engaging portions and click convex portions, and when the rotating shaft rotates, the plurality of engaging portions and click convex portions are simultaneously engaged and disengaged. The click feeling can be made heavy (heavy) easily with a simple structure.
In addition, since multiple engaging parts and click convex parts are provided at positions with different diameters from the rotation center of the rotation shaft, even if the click feeling is heavy, it can also be used for rotation angles of 180 degrees or more can do.

Hereinafter, embodiments of the present invention are shown in FIGS. FIG. 1 is an exploded perspective view showing a variable resistor with a switch as a rotating electrical component according to a first embodiment of the present invention, and FIG. 2 shows the variable resistor with a switch according to the first embodiment of the present invention. 3 is a cross-sectional view taken along line 3-3 in FIG. 2, FIG. 4 is a cross-sectional view taken along line 4-4 in FIG. 2, and FIG. 5 is a variable resistor with a switch according to the first embodiment of the present invention. FIG. 6 is a right side view of the rotation shaft shown in FIG. 5, FIG. 7 is a left side view of FIG. 5, and FIG. 8 is a view of the rotation shaft and leaf spring of FIG. FIG. 9 is a perspective view showing a rotating shaft seen from the mounting portion side of the leaf spring, and FIG. 10 is an exploded perspective view showing an arrangement state of the elastic arm of the leaf spring and the protruding portion of the click plate. 11 shows a leaf spring (a) is a plan view (b) is a side view, FIG. 12 is a click plate (a) is a plan view (b) is a bottom view, FIG. The right view which shows the holding member of the variable resistor with a switch which concerns on 1st Example of this invention, FIG. 14 is explanatory drawing which shows the click mechanism of the variable resistor with a switch which concerns on 1st Example of this invention, FIG. 15 is a left side view showing the holding member of the variable resistor with switch according to the first embodiment of the present invention;
16 is a right side view showing a contact board of a variable resistor with a switch according to the first embodiment of the present invention, and FIG. 17 is a slider receiver of the variable resistor with a switch according to the first embodiment of the present invention. FIG. 18 is a right side view of FIG. 17, and FIG. 18 is a front view showing the first and second sliders.

  In the figure, a variable resistor with a switch as an example of a rotary electric component of the present invention includes a click part, a variable resistor part, and a switch part around the axis of a rotary shaft 2 rotatably held by a bearing 1. For example, when the switch unit is turned on / off, for example, when the switch unit is in an on state, the set resistance value is adjusted by the variable resistor unit. Furthermore, a click feeling at the time of operation is caused by the click part.

  As shown in FIGS. 1 and 2, the bearing 1 is formed of an insulating material such as synthetic resin or zinc die cast, and forms a part of the housing with a through hole provided in the center. A rotating shaft 2 is rotatably held by the cylindrical portion 1a. Further, a substantially circular concave portion 1b is provided on the rear end side of the cylindrical portion 1a, and a base portion 2c of the rotating shaft 2 described later is rotatably accommodated in the concave portion 1b. Further, a stopper portion 1c protruding into the recess 1b is formed at one end (the lower end in the present embodiment) of the inner peripheral surface of the recess 1b. The stopper portion 1c is formed in a substantially fan shape that expands from the base portion on the base portion side to the distal end side (rotary shaft 2 side) (see FIG. 4).

  As shown in FIGS. 5 to 9, the rotating shaft 2 is made of aluminum, synthetic resin, or the like, and has a cylindrical shaft portion 2a held by the cylindrical portion 1a and a tip of the shaft portion 2a. An operation portion 2b having a D-shaped cross section provided, a bowl-shaped base portion 2c provided at the rear end of the shaft portion 2a and accommodated in the concave portion 1b of the bearing 1, and extending rearward of the base portion 2c. A pedestal portion 2d having a non-circular cross section (substantially rectangular shape in the present embodiment) and a drive portion 2e having a non-circular cross section having a rectangular column shape slightly longer than the pedestal portion 2d.

  Further, the base portion 2c is provided with a stopper portion 2f protruding from one end of the outer peripheral portion in a direction (radial direction) perpendicular to the axial direction of the shaft portion 2a. The stopper portion 2f is also formed in a substantially fan shape that expands from the base portion (inner peripheral side) base portion to the distal end side (outer peripheral side) in the same manner as the stopper portion 1c formed in the concave portion 1b of the bearing 1. (See FIGS. 4 and 6). Moreover, the attachment surface 2g which consists of a protruding step part which mounts the leaf | plate spring 3 mentioned later is provided in the one surface side of the base | substrate part 2c.

  Although not shown, when the rotating shaft 2 rotates by a predetermined angle, the stopper portion 2f contacts the stopper portion 1c formed in the concave portion 1b of the bearing 1 to restrict further rotation. It has become. At this time, the stopper portions 1c and 2f have a shape in which the widened portion on the tip side bites into the base side of each other, and the contact surfaces thereof are angled with respect to the radial center line of the rotary shaft 2. To engage (abut).

  Thus, the protrusions of the stoppers 1c and 2f are formed in a substantially fan shape that expands from the base to the tip side, and these contact surfaces are formed with respect to the radial center line of the rotary shaft 2. Since the stopper portions 1c and 2f are engaged with each other at an angle and the stopper is difficult to come off, the stopper can be surely functioned. The structure can be reduced in size.

As shown in FIGS. 5, 7, and 8, a leaf spring 3 that constitutes a part of the click member is disposed on the outer side (outer periphery) of the base portion 2 d of the rotating shaft 2. As shown in FIGS. 11A and 11B, the leaf spring 3 is made of a flat metal plate having elasticity, has a double substantially annular shape, and is inserted into the base portion 2d in the center. A non-circular square hole 3a is provided. In addition, an annular first annular portion 3b is provided at the peripheral portion of the square hole 3a, and a pair of circular arcs are formed at positions facing the outer peripheral portion of the first annular portion 3b via a pair of slits 3c and 3c. The elastic arms 3d and 3d are provided.
The elastic arm 3d is formed in a both-sided state, and its root portion is connected to the first annular portion 3b. The pair of elastic arms 3d and 3d are formed symmetrically with respect to the center line, so that the leaf spring 3 can be attached to the pedestal portion 2d of the rotating shaft 2 even if the leaf spring 3 is rotated 180 degrees. .

  Further, the first annular portion 3b is formed in a planar shape, while the elastic arm 3d is formed in a state in which a central portion thereof is slightly bent and curved through the slit 3c. ing. When the square hole 3a of the leaf spring 3 is inserted and attached to the pedestal portion 2d, the first annular portion 3b is placed on the attachment surface 2g formed on the one surface side of the base portion 2c for positioning. Will be. At this time, the central portion of the elastic arm 3d is placed in a slightly curved state toward the extending direction of the pedestal portion 2d extending rearward of the base portion 2c.

  As shown in FIG. 2, a click plate 17 that constitutes a part of the click member is disposed on the base portion 2 d of the base portion 2 c of the rotating shaft 2 so as to overlap the rear of the leaf spring 3. . As shown in FIGS. 12A and 12B, the click plate 17 has a substantially disk shape and is formed of an insulating material such as a synthetic resin. In the center of the click plate 17, a non-circular square hole 17a that is inserted through the pedestal portion 2d is provided. (Two) protrusions 17b and 17b are provided. The pair of protrusions 17b and 17b are provided at positions facing each other in the radial direction (positions at equal distances) with the rotation center of the rotation shaft 2 interposed therebetween.

  Further, on the other surface side opposite to the surface on which the projection 17b of the click plate 17 is provided, the square hole 17a is located on the same center line as the center line connecting the pair of projections 17b, 17b. A pair of projecting engaging portions 17c and 17d are provided with a gap therebetween. Of these, one engaging portion 17c is provided in the vicinity of the outer peripheral edge corresponding to the projection 17b provided on one surface on the opposite side, and the other engaging portion 17d is more rectangular than the engaging portion 17c. It is provided by shifting toward 17a. That is, the pair of engaging portions 17 c and 17 d are provided at different positions in the radial direction from the rotation center of the rotating shaft 2.

  The click plate 17 is inserted into the pedestal portion 2d of the rotary shaft 2 together with the leaf spring 3 and held so as to be movable in the axial direction of the rotary shaft 2, and both constitute a click member. At this time, as shown in FIG. 10, the center part of the pair of elastic arms 3d, 3d of the leaf spring 3 is arranged to oppose the pair of protrusions 17b, 17b formed on one surface side of the click plate 17, and is elastic. In a state where the projection 17b is elastically biased to the rear side (the wall 4f side of the holding member 4 described later) by the arm 3d, the leaf spring 3 and the click plate 17 are formed on the holding member 4 constituting a part of the housing described later. It is to be incorporated.

  As described above, the click plate 17 is provided with the protrusion 17b that protrudes on one side facing the plate spring 3, and the plate spring 3 abuts on the protrusion 17b so that the click plate 17 is elastically attached. Since the elastic arm 3d to be energized is provided, the elastic energizing force by the leaf spring 3 can be reliably transmitted to the click plate 17. In addition, two protrusions 17b of the click plate 17 are provided at opposite positions in the radial direction across the rotation center of the rotation shaft 2, and corresponding to the two protrusions 17b and 17b, Since two elastic arms 3d are provided on the leaf spring 3, the leaf spring 3 does not tilt in one of the radial directions across the rotation center of the rotary shaft 2. The plate 17 can be stably elastically biased.

In this case, when the plate spring 3 and the click plate 17 which are click members are incorporated in the holding member 4 of the housing, the elastic arm 3d of the plate spring 3 is connected to the protrusion 17b of the click plate 17. The leaf spring 3 is arranged in a state of being flat (flat) as a whole. That is, as shown in FIG. 2, the leaf spring 3 is in an initial state (a state where the engaging portions 17c and 17d are not engaged with click convex portions 4d and 4e, which will be described later) incorporated in the holding member 4. It is arranged in a flat plate shape (planar shape) along a plane orthogonal to the axial direction of the rotary shaft 2.
Further, in this case, on the rear side (right side in FIG. 2) of the elastic arm 3d, when the elastic arm 3d is pressed by the protrusion 17b, the air space S that can be elastically displaced is the base portion 2c and the pedestal portion of the rotating shaft 2. 2d (see FIG. 2). The air space S is formed by providing a mounting surface 2g on which the first annular portion 3b, which is a base portion (holding portion) of the leaf spring 3, is placed so as to protrude to one surface side of the rotating shaft 2 (base portion 2c). It is what is done. The attachment surface 2g has a substantially annular shape with a diameter smaller than that of the elastic arm 3d of the leaf spring 3.

  When the rotary shaft 2 is rotated, the leaf spring 3 and the click plate 17 inserted through the pedestal portion 2d rotate with the rotary shaft 2 and are formed on the other surface side of the click plate 17. When the engaging portions 17c and 17d are engaged with and disengaged from the click convex portions 4d and 4e provided on the holding member 4 which will be described later, the click plate 17 moves in the axial direction. By pressing the elastic arm 3d, the elastic arm 3d of the leaf spring 3 is bent, and a click feeling is generated when the rotary shaft 2 is rotated by the elastic biasing force at this time. In this case, the engaging portion 17c and the click convex portion 4d, and the engaging portion 17d and the click convex portion 4e are engaged and disengaged simultaneously.

  Thus, when the rotating shaft 2 is rotated and the engaging portions 17c, 17d and the click convex portions 4d, 4e are engaged, the elastic arm 3d of the leaf spring 3 is in contact with the click plate 17. It is pressed by the protrusion 17b. At this time, since the elastic arm 3d can be bent to the side opposite to the click plate 17, the initial state where the rotating shaft 2 is not rotated and the engaging portions 17c, 17d and the click convex portion 4d. In the normal state where 4e is not engaged, the leaf spring 3 is arranged in a flat plate shape (planar shape) that does not require a large bending, so that it is possible to obtain a click mechanism in which the touch is not impaired by heat. It is possible.

  A holding member 4 formed in a substantially rectangular shape from an insulating material such as synthetic resin, which constitutes a part of the housing, is engaged with the rear end of the bearing 1. The holding member 4 has an insertion hole 4a through which the drive unit 2e of the rotating shaft 2 is inserted in the center, and the other surface located on one side and the opposite side across the insertion hole 4a. On the side, housing recesses 4b and 4c are provided, which respectively form a housing section having a circular cross section.

  In addition, a flat resistive substrate 5 made of an insulating resin material such as phenol resin or epoxy resin is integrally embedded in the central portion of the holding member 4 by a method such as insert molding. As shown in FIG. 15, a resistor pattern 6 made of a conductive paste such as carbon printed on the resistor substrate 5 is placed in the receiving recess 4b, which is one side (back side in this embodiment). Alternatively, the conductor pattern 7 made of silver paste is exposed. Further, on the lower end side of the holding member 4, connecting terminals 8 and 9 made of conductive metal plates connected to the conductor pattern 7 and the resistor pattern 6 and led out from the resistor substrate 5 protrude. Is provided.

  Further, the inner bottom surface of the housing recess 4c on the other surface side (front side in this embodiment) facing the housing recess 4b of the holding member 4 is formed by the housing recess 4c and the recess 1b of the bearing 1. It becomes the wall part 4f exposed in the accommodating part. The wall portion 4f is formed integrally with the holding member 4 in a state orthogonal to the axial direction of the rotating shaft 2. As shown in FIG. 13 and FIG. 14, click convex portions 4 d and 4 e formed integrally with the wall portion 4 f so as to protrude from the flat surface of the wall portion 4 f which is the inner bottom surface of the accommodating concave portion 4 c are integrally formed. Has been. Of these, one click convex portion 4d is provided adjacent to the inner peripheral edge of the accommodating recess 4c, and the other click convex portion 4e is shifted closer to the insertion hole 4a than the click convex portion 4d. Is provided. That is, the pair of click convex portions 4 d and 4 e are provided at different positions in the radial direction from the rotation center of the rotation shaft 2.

  The click convex portions 4d and 4e are engaged with and disengaged from a pair of engaging portions 17c and 17d provided on the other surface side of the click plate 17 attached to the pedestal portion 2d of the rotary shaft 2 to rotate the rotation. A click feeling is generated when the shaft 2 is rotated. In this case, the engaging portion 17c and the click convex portion 4d, and the engaging portion 17d and the click convex portion 4e are engaged and disengaged simultaneously.

  Thus, two engaging portions 17c and 17d of the click plate 17 and two click convex portions 4d and 4e to be engaged with and disengaged from each other are provided. When the rotating shaft 2 rotates, each of the two engaging portions 17c is provided. 17d and the click projections 4d, 4e are engaged and disengaged at the same time, so that the pair of elastic arms 3d of the leaf spring 3 can be bent at the same timing, so that the leaf spring 3 is made thicker. The click feeling can be made heavy (heavy).

Further, since the engaging portions 17c and 17d and the click convex portions 4d and 4e are provided at different positions in the radial direction from the rotation center of the rotation shaft 2, the rotation shaft 2 is rotated half a turn (180 degrees). In this case, the engaging portion 17c and the click convex portion 4e, and the engaging portion 17d and the click convex portion 4d are located at different positions in the radial direction, and the rotary shaft 2 is rotated once. Since they do not collide with each other, it is possible to cope with a rotation angle of 180 degrees or more.
The engaging portions 17c and 17d and the click convex portions 4d and 4e are formed integrally with the click plate 17 and the holding member 4 made of synthetic resin, respectively, so that the engaging portions 17c and 17d are formed. The positions of the click convex portions 4d and 4e are accurately determined by a molding die. Therefore, when the rotating shaft 2 is rotated, the timing at which the engaging portion 17c and the click convex portion 4d are engaged / disengaged is matched with the timing at which the engaging portion 17d and the click convex portion 4e are engaged / disengaged. It is possible to obtain a heavy click feeling without any sense of incongruity.

  Further, the resistor pattern 6 is exposed on one surface side of the holding member 4 on which the resistor substrate 5 is insert-molded, and the click convex portions 4d and 4e are integrally formed on the other surface side opposite thereto. Since the resistor board 5 and the click protrusions 4d and 4e are provided on the same member, the timing for obtaining the click feeling and the timing for changing the resistance value can be synchronized. High-quality rotating electrical components (variable resistors with switches) can be obtained.

  In this case, the click protrusions 4d and 4e are provided corresponding to the positions of the starting ends of the arc-shaped contact pattern 11a of the fixed contact 11 provided on the contact board 10 of the rotary switch described later. When the engagement portions 17c and 17d of the click plate 17 get over the click convex portions 4d and 4e and a click feeling is generated, the second slider 15 of the rotary switch is connected to the contact pattern 11a. It is set so that it is conductive and the switch is turned on. The click mechanism in this case is shown in FIG.

  Further, in the present embodiment, the click convex portions 4d and 4e have the same left and right inclinations, and when the engaging portions 17c and 17d of the click plate 17 get over this, it is possible to go back and forth. The same feeling can be obtained. Although not shown, a V-groove cam groove is continuously formed in the receiving recess 4c of the holding member 4 following the click protrusions 4d and 4e for turning on / off the rotary switch. By forming a plurality, a click feeling can be appropriately generated even when the variable resistor is rotated after the rotary switch is turned on.

  Further, a contact board 10 formed in a substantially rectangular shape from an insulating material such as synthetic resin, which constitutes a part of the housing, is engaged with the rear end of the holding member 4. The contact board 10 has an insertion hole 10a through which the drive unit 2e of the rotating shaft 2 is inserted in the center, and a circular accommodation recess 10b is provided on one surface side of the insertion hole 10a.

  In addition, a fixed contact 11 made of a conductive metal plate is integrally embedded in the center portion of the contact substrate 10 by a method such as insert molding, and the accommodation recess 10b of the contact substrate 10 includes As shown in FIG. 16, an arc-shaped contact pattern 11a having an open bottom and a continuous annular common pattern 11b are exposed. Further, on the lower end side of the contact substrate 10, connection terminals 12a and 12b led out from the contact pattern 11a and the common pattern 11b are provided so as to protrude.

  FIG. 17 and FIG. 18 show the slider receiver 13 in which the first slider 14 and the second slider 15 are attached to the opposing surfaces. The slider receiver 13 is made of an insulating material such as a synthetic resin, and the drive section 2e of the rotary shaft 2 is inserted through the center of the slider receiver 13 so that the cross section of the drive section 13 is rotatably fitted integrally with the rotary shaft 2. It has a shaft portion 13b having a substantially rectangular fitting hole 13a having the same non-circular shape as 2e, and a disk portion 13c provided in a disk shape at the center of the shaft portion 13b. Moreover, the 1st slider 14 and the 2nd slider 15 are provided in the one surface side and other surface side of this disc part 13c, and as shown in FIG. The substrate 10 is disposed so as to face the slider 13 via the slider receiver 13.

  The first and second sliders 14 and 15 are formed of a conductive thin metal plate having elasticity, have a substantially annular shape, and are fixed to the disk portion 13 c of the slider receiver 13. Base portions 14a and 15a, a pair of first contact pieces 14b and 15b cut and raised slightly to the inner diameter side from the base portions 14a and 15a, and a second arc cut and raised to the outer diameter side Two contact pieces 14c and 15c are provided. The first slider 14 and the second slider 15 are formed of common parts having the same shape.

  In the slider receiver 13, the fitting hole 13 a of the shaft portion 13 b is fitted into the driving portion 2 e of the rotating shaft 2, and the housing recess 4 b of the holding member 4 and the housing recess 10 b of the contact substrate 10 are formed. It is accommodated rotatably in the accommodation space formed by. And the first contact piece 14b of the first slider 14 provided on one surface side of the disk portion 13c is in sliding contact with the conductor pattern 7 of the resistance substrate 5 embedded in the holding member 4, The second contact piece 14 c of the first slider 14 comes into sliding contact with the resistor pattern 6 of the resistance substrate 5. Further, the first contact piece 15b of the second slider 15 provided on the other surface side of the disk portion 13c is in sliding contact with the common pattern 11b provided to be exposed on the contact board 10, and The second contact piece 15 c of the second slider 15 is in sliding contact with the contact pattern 11 a of the contact board 10.

  Incidentally, a circular small diameter portion 13d is formed by providing a step on one end side (front side) of the shaft portion 13b of the slider receiver 13, and this small diameter portion 13d is formed on the holding member 4. It is rotatably guided in the insertion hole 4a, and thereby the rotation of the slider receiver 13 is stabilized.

  As described above, the first slider 14 and the second slider 15 are provided on one side and the other side of the slider receiver 13, and the resistance substrate 5 and the contact substrate 10 are provided. Since the slider receivers 13 of the first and second sliders 14 and 15 can be shared without providing them separately, the size can be reduced. It becomes possible to achieve low cost support. In addition, since the first slider 14 and the second slider 15 are formed of common parts having the same shape, the parts can be shared and the cost can be reduced.

  A mounting plate 16 made of a rectangular metal plate or the like constituting a part of the housing is attached to the rear end side of the contact board 10 by a plurality of mounting pins 18. The holding member 4 and the contact board 10 are sandwiched and held between the mounting plate 16 and the bearing 1 by the mounting pin 18, thereby forming a rotary electric component housing of the present invention. ing.

  The rotary electric component of the present invention has the above-described configuration, and the rotary shaft that constitutes the click portion when the rotary shaft 2 positioned in the vicinity of the rotary terminal is rotated in one direction (for example, clockwise). The engaging portions 17c and 17d of the click plate 17 attached to the second pedestal portion 2d and the click convex portions 4d and 4e provided in the receiving concave portion 4c of the holding member 4 are engaged with each other. When the engaging portions 17c and 17d get over the click convex portions 4d and 4e, a click feeling when the switch is turned on can be obtained. When the click feeling is generated, the contact pattern 11a and the common pattern 11b provided on the contact board 10 constituting the switch portion are provided in the second slide provided on the slider receiver 13. The switch (rotary switch) is turned on by being in sliding contact with the child 15 and conducting through the second slider 15.

Next, when the rotating shaft 2 is further rotated in one direction, the resistor pattern 6 and the conductor pattern 7 of the resistor substrate 5 embedded in the holding member 4 constituting the variable resistor portion are formed. The set resistance value of the resistor pattern 6 varies in sliding contact with the first slider 14 provided on the slider receiver 13. When the rotation shaft 2 reaches a predetermined rotation angle, the rotation shaft 2 and the stopper portions 2f and 1c provided on the bearing 1 come into contact with each other, and further rotation is restricted.
Further, when the rotary shaft 2 is rotated in the other direction (for example, counterclockwise direction) from the position where the switch is on, the engaging portions 17c and 17d get over the click convex portions 4d and 4e, The switch is turned off (the contact pattern 11a and the common pattern 11b are in a non-conductive state) with a click feeling. If the rotating shaft 2 is further rotated in this direction from this state, the stopper portions 2f and 1c come into contact with each other, and further rotation of the rotating shaft 2 is restricted.

According to the above-described embodiment of the present invention, the housing recess formed by the recess 1b and the housing recess 4c of the bearing 1 is provided in the housing that rotatably holds the rotating shaft 2, and the housing recess that constitutes the housing is provided. 4c can be rotated together with the rotating shaft 2, and when the rotating shaft 2 is rotated, it can be bent in the axial direction of the rotating shaft 2 and is exposed in the receiving recess 4c (receiving portion), The leaf spring 3 is disposed so that the elastic force is urged toward the wall portion 4f that intersects with the axial direction of the rotary shaft 2 in a state orthogonal thereto, and the leaf spring 3 is formed of a flat metal plate, In a state in which the leaf spring 3 is incorporated in the housing recess 4c (housing portion) (a state in which the engaging portions 17c and 17d are not engaged with the click projecting portions 4d and 4e), the rotating shaft 2 Arranged in a flat (flat) shape along a plane perpendicular to the axial direction of As a result, it is not necessary to bend the leaf spring 3 before assembling, so that even when heat is applied during reflow soldering after assembling, the spring force of the leaf spring 3 does not change greatly and rotates. It is possible to reduce variations in the click feeling and operating torque of the mold electrical parts.
In the above embodiment, the elastic force of the leaf spring 3 is described as acting on the wall portion 4f of the holding member 4 provided on the rear side of the leaf spring 3, but the present invention is not limited to this. The elastic force of the leaf spring 3 may act on a wall portion provided on the front side of the leaf spring 3. Specifically, the wall portion may be provided on the rear surface of the bearing 1 (the inner bottom surface of the recess 1b), and a leaf spring may be disposed opposite to the wall portion via a click plate. In this case, the engaging portion is formed on the front surface side of the click plate, and the click convex portion is formed on the rear surface (wall portion) of the bearing 1.
Further, the recess 1b of the bearing 1 and the receiving recess 4c of the holding member 4 that constitute the receiving portion in which the click plate 17 and the leaf spring 3 are disposed do not need to be recessed portions, one being a recess and the other being a plate. It is good also as a shape part (wall part).

It is a disassembled perspective view which shows the variable resistor with a switch as a rotary electrical component which concerns on the Example of this invention. It is a schematic sectional drawing which shows the variable resistor with a switch concerning the Example of this invention. It is sectional drawing in the 3-3 line of FIG. 2 of this invention. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. 2 of the present invention. It is a front view which shows the rotating shaft and leaf | plate spring of the variable resistor with a switch concerning the Example of this invention. It is a right view of the rotating shaft shown in FIG. 5 of this invention. FIG. 6 is a left side view of FIG. 5 of the present invention. It is the partial explanatory view which looked at the axis of rotation and leaf spring of Drawing 5 of the present invention from other directions. It is a perspective view which shows the rotating shaft seen from the mounting part side of the leaf | plate spring which concerns on the Example of this invention. It is a disassembled perspective view which shows the arrangement | positioning state of the protrusion part of the elastic arm of the leaf | plate spring which concerns on the Example of this invention, and a click board. The leaf | plate spring which concerns on the Example of this invention is shown, (a) is a top view, (b) is a side view. The click board which concerns on the Example of this invention is shown, (a) is a top view, (b) is a bottom view. It is a right view which shows the holding member of the variable resistor with a switch which concerns on the Example of this invention. It is explanatory drawing which shows the click mechanism of the variable resistor with a switch concerning the Example of this invention. It is a left view which shows the holding member of the variable resistor with a switch which concerns on the Example of this invention. It is a right view which shows the contact board of the variable resistor with a switch which concerns on the Example of this invention. It is a front view which shows the slider receiver and 1st, 2nd slider of the variable resistor with a switch concerning the Example of this invention. It is a right view of FIG. It is sectional drawing which shows the conventional rotary type variable resistor.

Explanation of symbols

1: Bearing (housing)
1a: Cylindrical part 1b: Concave part (accommodating part)
1c: Stopper part 2: Rotating shaft 2a: Shaft part 2b: Operation part 2c: Base part 2d: Base part 2e: Drive part 2f: Stopper part 2g: Mounting surface 3: Leaf spring 3a: Square hole 3b: First annular part 3c: slit 3d: elastic arm 4: holding member (housing)
4a: Insertion hole 4b: Accommodating recess 4c: Accommodating recess (accommodating portion)
4d: convex part for click 4e: convex part for click 4f: wall part 5: resistance substrate 6: resistor pattern (conductive pattern)
7: Conductor pattern (conductive pattern)
8: Connection terminal 9: Connection terminal 10: Contact board (housing)
10a: Insertion hole 10b: Housing recess 11: Fixed contact 11a: Contact pattern 11b: Common pattern 12a: Connection terminal 12b: Connection terminal 13: Slider receiver 13a: Fitting hole 13b: Shaft part 13c: Disk part 13d: Small diameter Part 14: First slider 14a: Base 14b: First contact piece 14c: Second contact piece 15: Second slider 15a: Base part 15b: First contact piece 15c: Second contact piece 16: Mounting Board (housing)
17: Click plate 17a: Square hole 17b: Projection 17c: Engagement part 17d: Engagement part 18: Mounting pin

Claims (6)

  A rotating shaft that is operated to rotate, a housing that rotatably holds the rotating shaft, a rotation detecting means that includes a slider and a conductive pattern for detecting the rotation of the rotating shaft, and a housing provided in the housing And is provided so as to be rotatable together with the rotating shaft, and can be bent in the axial direction of the rotating shaft, and is exposed in the housing portion, and an elastic force is urged toward the wall portion intersecting the axial direction of the rotating shaft. The leaf spring is formed of a flat metal plate, and is incorporated in the housing portion along a plane orthogonal to the axial direction of the rotation shaft. A rotating electrical component characterized by being arranged in a flat plate shape.   A click plate provided so as to be rotatable together with the rotating shaft is disposed between the wall portion and the leaf spring, and the click plate is provided with a protrusion protruding on one side facing the leaf spring. 2. The rotating electrical component according to claim 1, wherein the leaf spring is provided with an elastic arm that abuts against the protrusion and elastically urges the click plate toward the wall.   Two protrusions of the click plate are provided at opposite positions in the radial direction across the rotation center of the rotation shaft, and two elastic arms are provided on the leaf spring corresponding to the two protrusions. The rotating electrical component according to claim 2, wherein the rotating electrical component is provided.   On the other surface side of the click plate, an engaging portion including a protrusion is provided, and the wall portion is provided with a click convex portion that disengages from the engaging portion to cause a click feeling, and the rotating shaft. When the engagement portion and the click convex portion engage with each other, the elastic arm of the leaf spring is pressed by the protrusion of the click plate, and the elastic arm is opposite to the click plate. 4. The rotating electrical component according to claim 2, wherein the rotating electrical component can be bent sideways.   The click plate and the wall are provided with a plurality of the engaging portions and click convex portions, and when the rotation shaft rotates, the plurality of engaging portions and click convex portions are simultaneously engaged and disengaged. 5. The rotary electrical component according to claim 4, wherein   6. The rotating electrical component according to claim 5, wherein the plurality of engaging portions and click convex portions are provided at positions having different diameters from the rotation center of the rotating shaft.

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