JP2007220438A - Electrical component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrical component capable of preventing an attachment plate to be engaged with a case from becoming loose, when the electrical component is mounted on a printed board. <P>SOLUTION: The electrical component comprises: a case 1 having a housing part 1a; an operating shaft 6 inserted to the housing part 1a of the case 1 and disposed such that one end thereof protrudes from the case 1; a signal generating means for outputting an electric signal in response to an operation of the operating shaft 6; and the attachment plate 9 made from a metal plate and having a plate-shaped part 9a disposed on a front side where the operating shaft 6 protrudes from the case 1, and at least a pair of elastically deformable mounting legs 9d folded from the periphery of the plate-shaped part 9a to extend to the rear side of the case 1 and having snap parts 9g at their tip portions. A penetrating part 9f formed of a hole or notch is provided at a surface of each leg 9d intersecting the plate-shaped part 9a, and a protrusion 1c protruding outward is provided on an outer wall of the case 1 in correspondence with the penetrating part 9f. The attachment plate 9 is attached to the case 1 with the protrusion 1c engaged with the penetrating part 9f. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electrical component, and more particularly to an engagement structure between a case and a mounting plate that prevents the electrical component case and the mounting plate from floating when the electrical component is mounted on a printed circuit board.

  As a structure of a conventional electric component, it has a bearing that rotatably holds an operation shaft, a case that houses a rotating body provided with a slider, and a mounting plate that integrally attaches the bearing and the case. There is known a structure that is temporarily fixed and mounted on a mounting board (printed board) of an electronic device by a snap portion of a pair of leg portions of a mounting plate (for example, see Patent Document 1).

The structure of this conventional electrical component is shown in FIGS. 10 is a front view of a conventional electrical component, FIG. 11 is a bottom view, and FIG. 12 is a cross-sectional view.
In the figure, the operating shaft 51 has an operating portion 51a cut into a D-shape and a bowl-shaped rotating plate 51b. In addition, a C-ring 52 is provided at the center of the outer periphery of the shaft portion, and a cam that generates a click feeling when the operation of the operation shaft 51 is engaged with the click spring 53 on the upper surface of the rotating plate 51b. Is provided.

The bearing 54 has a cylindrical tubular portion 54a and a substantially rectangular base portion 54b. The base portion 54b is provided with a box-shaped storage portion 54c, and a click spring 53 is fixed to the storage portion 54c. The shaft portion of the operating shaft 51 is rotatably inserted into the cylindrical portion 54 a of the bearing 54, and the hook-shaped rotating plate 51 b is accommodated so as to face the click spring 53 in a detachable manner.
The rotator 55 has a substantially flat slider receiving portion 55a and a projecting portion 55b protruding in a cylindrical shape. The slider receiving portion 55a has a slider 56 having springiness. It is fixed. The rotating body 55 rotates so as to rotate when the operation shaft 51 is rotated.

  The first case 57 is formed in a substantially rectangular shape, and is provided with a circular recess 57a in which the slider 56 is accommodated. A substrate 58 is integrated and held in the first case 57 by insert molding or the like. A pattern (not shown) on which the slider 56 slides is formed on the substrate 58, and the substrate 58 is in the first case with the surface on which the pattern is formed exposed on the inner bottom surface of the recess 57a. It is buried in 57. In addition, a terminal 59 derived from the pattern is provided at one end of the substrate 58, and this terminal 59 is formed to protrude outward from one side surface of the first case 57. Further, an opening 58a penetrating vertically is provided in the center of the substrate 58, and the operating shaft 51 and the protruding portion 55b of the rotating body 55 are rotatably inserted into the opening 58a. ing.

  The second case 60 is formed in a substantially rectangular shape, and is formed with a storage portion 60a composed of a circular opening penetrating vertically. The second case 60 faces the lower surface side of the first case 57 so that the opening portion 57f of the first case 57 and the opening portion 58a of the substrate 58 embedded in the first case 57 face the storage portion 60a. Is polymerized. A plurality of support protrusions 60c are formed at the four corners on the lower surface side of the second case 60, and a plurality of recessed locking portions 60d are provided on the lower surface side. A locking piece 61d of a mounting plate 61, which will be described later, is locked to the locking portion 60d by being bent, and the second case 60 is overlapped with the bearing 54 and the first case 57 and attached. It has become.

  The mounting plate 61 is formed by punching and bending a metal plate, and is formed in a substantially U-shape. The mounting plate 61 has an upper plate portion 61a having an opening and a pair of side plate portions 61b, and the side plate portion 61b has a pair of snap portions. Leg portions 61c and two pairs of locking pieces 61d are provided. The mounting plate 61 is fitted to the upper portion of the bearing 54, and after the bearing 54, the first case 57, and the second case 60 are overlapped, the locking piece 61d is bent to lock the second case 60. An integrated electrical component is configured by engaging the portion 60d.

  As shown in FIG. 12, when the electrical component is mounted on a mounting board 62 such as an electronic device, the pair of leg portions 61c are inserted into the holes of the mounting board 62, and the snap portions of the pair of leg portions 61c are inserted. It is temporarily fixed on the mounting substrate 62 by the elastic force generated by the bent portion forming the, and then the leg portion 61c and the terminal portion 59 are fixed by soldering to a conductive pattern (not shown). .

JP 2005-129655 A

  However, in the above-described conventional electrical component, when the pair of legs having the snap portion of the mounting plate made of a metal plate is inserted into the hole of the mounting board (printed circuit board), the resilient force of the snap portion is resisted. The electronic component is pushed in, so that the force at the time of pushing in is locked by being bent at the locking portion of the second case via the bearing and the first and second cases. Since the latching piece acts on the locking piece of the plate and is raised, there is a problem that the mounting plate may be lifted.

  Accordingly, an object of the present invention is to solve the above-mentioned problems and to provide an electrical component that can prevent the mounting plate that engages with the case from floating when the electrical component is mounted on a printed circuit board.

  In order to solve the above problems, the electrical component of the present invention, as a first solution means, a case having a storage portion, an operation shaft that is inserted into the storage portion of the case and has one end projecting from the case, and A signal generating means for outputting an electrical signal in accordance with the operation of the operation shaft, a plate-like portion made of a metal plate and disposed on the front side of the case from which the operation shaft protrudes, and bent from the periphery of the plate-like portion And a mounting plate having at least one pair of elastically deformable mounting legs extending to the rear side of the case and provided with a snap portion on the tip side, and projecting outward on the outer wall of the case In correspondence with the protrusion, a through part made of a hole or a notch is provided on a surface intersecting the plate-like part of the mounting leg, and the protrusion is engaged with the through part. The mounting plate is attached to the case. It has a configuration that has been kicked.

Further, as a second solving means, the mounting plate is provided with a plurality of mounting legs bent from the periphery of the plate-shaped portion and extending in the same direction as the mounting legs, and the mounting legs The mounting plate is attached to the case by bending the front end side of the case to the bottom side of the case.
As a third solution, the housing portion of the case is formed in a box shape with an opening on the front side, and the opening is covered with the plate-like portion of the mounting plate, and is cylindrical with the plate-like portion. The bearing portion is provided, and the operation shaft is rotatably inserted into the bearing portion.
Further, as a fourth solving means, there is a rotating body that can rotate in accordance with the rotation of the operation shaft, and a plurality of uneven cam portions are provided on the front side of the rotating body. A leaf spring having a projecting portion that engages and disengages is sandwiched between the mounting plate and the case.

As a fifth solution, a pair of mounting legs of the mounting plate are provided across the axis of the operation shaft, and both ends of the leaf springs are engaged at the roots of the mounting legs. The configuration is stopped.
Further, as a sixth solving means, the signal generating means is provided in a slider rotating with the rotation of the operation shaft, and in a housing portion of the case, and an electric signal is brought into sliding contact with the slider. And a conductive pattern for detecting the rotation of the operation shaft.
As a seventh solution, the mounting plate is provided with a pair of second mounting legs separately from the pair of mounting legs, at a position intersecting with the pair of mounting legs. The bent portions forming the snap portions engaged with the printed circuit board of the leg portions and the pair of second mounting leg portions are respectively provided at different positions from the bottom surface of the case.

  As described above, the electrical component of the present invention includes a case having a storage portion, an operation shaft that is inserted into the storage portion of the case and is arranged with one end projecting from the case, and an electrical signal that is generated when the operation shaft is operated. A signal generating means for outputting, a plate-like portion made of a metal plate and disposed on the front side from which the operation shaft of the case protrudes, bent from the periphery of the plate-like portion, extended to the rear side of the case, and snapped to the tip side A mounting plate having at least a pair of mounting legs that can be elastically deformed and provided with projections projecting outward on the outer wall of the case, and a plate shape of the mounting legs corresponding to the projections Since a through part consisting of a hole or notch is provided on the surface that intersects the part, and a mounting plate is attached to the case with a protrusion engaged with the through part, the electrical component can be used for mounting electronic devices, etc. Mounting plate when mounting on a printed circuit board Even when the mounting leg is inserted through the hole in the printed circuit board, even if the electrical component is pushed in against the elastic force of the snap part, the force at the time of pushing is applied by the penetration part of the mounting leg and the protrusion on the outer wall of the case. By receiving, the mounting plate can be prevented from floating from the case.

The mounting plate is provided with a plurality of mounting legs that are bent from the periphery of the plate-like portion and extend in the same direction as the mounting legs, and the front end side of the mounting legs is bent to the bottom surface side of the case. Since the mounting plate is attached to the case by the above, when the mounting plate is attached to the case, when the mounting leg portion is bent to the bottom surface side of the case, the mounting leg portion and the protrusion on the case outer wall are engaged with each other. Since it can be stopped, the mounting leg can be bent reliably and easily, and the productivity can be improved.
The case storage part is formed in a box shape with an opening on the front side, the opening is covered by the plate-like part of the mounting plate, and a cylindrical bearing part is provided integrally with the plate-like part, and the bearing part is operated. Since the shaft is rotatably inserted, the opening of the case can be reliably closed by the mounting plate, and no floating occurs even during mounting, so that foreign matter can be prevented from entering the case.
Also, a leaf spring having a rotating body that can rotate in accordance with the rotation of the operating shaft, and having a plurality of concave and convex cam portions provided on the front side of the rotating body, and having protrusions that engage with and disengage from the cam portions. Is sandwiched between the attachment plate and the case, it is not necessary to fix the leaf spring to the attachment plate or the case by a method such as caulking, and the leaf spring for the click feeling can be easily attached.

Also, the mounting plate mounting legs are provided in pairs with the axis of the operating shaft in between, and both ends of the leaf springs are locked at the roots of these mounting legs, so the mounting plate and the case The leaf spring can be securely held between the two.
The signal generating means is provided in a slider that rotates as the operating shaft rotates, and a housing portion of the case, and generates an electrical signal by sliding contact with the slider to detect the rotation of the operating shaft. Since it consists of a conductive pattern, it is possible to detect signals such as the rotation direction and rotation angle of the rotating body when the operating shaft rotates with a simple structure.
In addition to the pair of mounting legs, the mounting plate is provided with a pair of second mounting legs at a position intersecting with the pair of mounting legs, and the pair of mounting legs and the pair of second mounting. Since the bent portions forming the snap portions engaged with the printed circuit board with the leg portions are provided at different positions from the bottom surface of the case, the mounting leg portions are mounted when mounting the electrical component on the printed circuit board. By appropriately corresponding to the snap portions formed at different positions, it is possible to attach to the printed boards having different plate thicknesses.

  Embodiments of the present invention are shown in FIGS. 1 is an exploded perspective view showing an electrical component of the present invention, FIG. 2 is a plan view showing the electrical component of the present invention, FIG. 3 is a front view showing the electrical component of the present invention, and FIG. 4 shows the electrical component of the present invention. Sectional view, FIG. 5 is a front view showing a mounting plate for an electrical component of the present invention, FIG. 6 is a sectional view of the mounting plate, FIG. 7 is a plan view showing another embodiment of the electrical component of the present invention, and FIG. FIG. 9 is a front view showing a state mounted on a printed circuit board in another embodiment of the electrical component of the invention, and FIG. 9 is a front view showing a state viewed from a direction orthogonal to FIG.

  As shown in FIG. 1, the rotary electric component of the present invention includes a box-shaped case 1 having an opening on the upper surface, a fixed contact 2 and a conductive pattern 3 disposed in the case 1, and a fixed contact 2 and a conductive pattern 3. The movable contact 4 and the slider 5 that are in contact with and slidable with each other, a rotating shaft 6 that can be rotated and pressed, a rotating body 7 that rotates as the rotating shaft 6 rotates, and a sliding feel that slides on the rotating body And a mounting plate 9 that has a bearing portion that rotatably holds the rotary shaft 6 and covers the opening of the case 1. The case 1 and the mounting plate 9 constitute a housing.

  The case 1 is formed in a box shape having an accommodating portion 1a having an opening on the upper surface made of an insulating material such as synthetic resin. In addition, a pair of guide grooves 1b, 1b penetrating vertically is provided on the opposite outer surface of the case 1, and locking projections 1c, 1c projecting outward are provided in the guide grooves 1b, 1b, respectively. It has been. In addition, a pair of concave grooves 1d and 1d are provided on the upper surface side (front surface side) of the storage portion 1a communicating with the guide grooves 1b and 1b, and the concave grooves 1d and 1d are respectively upward (forward). Projecting pieces 1e and 1e are provided. Further, the bottom surface of the case 1 is provided with a plurality of notched recess portions 1f.

  A mounting leg portion 9d of a mounting plate 9 to be described later is engaged with these guide grooves 1b and 1b, and is positioned and engaged by the locking projection 1c and the protruding piece 1e, so that the mounting plate 9 is opened in the case 1. It attaches so that the storage part 1a of a shape may be covered, and the front-end | tip of the attachment leg part 9c of the attachment board 9 is bend | folded and fixed in the direction engaged with the hollow part 1f.

  Further, at the center of the inner bottom surface of the housing portion 1a of the case 1, a conductive metal plate is formed by being embedded in the case 1 in a state where a part thereof is exposed by a method such as insert molding, 2 and a peripheral fixed contact 2b are disposed so as to surround the central fixed contact 2a. Further, outside the fixed contact 2, an electrically conductive metal plate is embedded in the case 1 in a state where a part of the same is exposed to the outer peripheral portion of the inner bottom surface of the storage portion 1a by a method such as insert molding. The common pattern 3a and the code pattern 3b that are formed to form the conductive pattern 3 are disposed.

  Further, on the outer surface of the case 1, the central fixed contact 2 a and the peripheral fixed contact 2 b are electrically connected to the common pattern 3 a and the code pattern 3 b, and are connected to the connection terminals 2 c and lead out to the outside of the case 1. 2d and connection terminals 3c and 3d are provided in a projecting manner, and the connection terminals 2c, 2d, 3c, and 3d are arranged to be bent downward along the outer surface of the case 1, respectively.

  The movable contact 4 is made of a conductive thin metal plate and is formed in a disk shape having a dome-shaped bulging portion 4a that can be reversed at the center. The movable contact 4 is placed on the fixed contact 2 disposed in the housing portion 1a of the case 1, the outer peripheral edge 4b contacts the peripheral fixed contact 2b, and the top lower surface side of the bulging portion 4a is the center. It is arranged in a state of being opposed to the fixed contact 2a. The movable contact 4 and the fixed contact 2 constitute a push switch.

  The slider 5 is made of a conductive thin metal plate, and has an annular base portion 5a and round holes formed outwardly extending at a plurality of locations (three locations in this embodiment) of the base portion 5a. The mounting piece 5b has a plurality of contact pieces 5c extending in a cantilevered manner and having elasticity in an annular direction from the mounting piece 5b. The slider 5 is attached so as to be rotatable integrally with the rotating body 7 by attaching an attachment piece 5b to a rotating plate portion 7b of the rotating body 7 described later. When the rotating body 7 is rotatably housed in the housing portion 1 a of the case 1, the slider 5 is placed on the conductive pattern 3 disposed in the housing portion 1 a, and the rotating body 7 With the rotation, each contact piece 5c comes into sliding contact with the common pattern 3a and the code pattern 3b. The slider 5 and the conductive pattern 3 constitute signal generating means such as an encoder. By this signal generation means, signals such as the rotation direction and the rotation angle of the rotary shaft 6 and the rotating body 7 which are operation shafts can be detected.

  The rotating shaft 6 as an operation shaft is made of an insulating material such as synthetic resin, and has a cylindrical thick shaft portion 6a having a diameter larger than a central through hole 7c of the rotating body 7 to be described later and a substantially cylindrical shape slightly thinner than this. The thin shaft portion 6b is connected to the thin shaft portion 6b in the axial direction on the same axis line via a step portion 6c. Further, the flat shaft 6d has a flat surface 6d on the tip side of the thick shaft portion 6a opposed to the flat shaft 6a, and the flat surface 6d has a D-shaped cross section on the tip side so that the arc-shaped portion 6e and the straight portion 6f are formed. The knob attaching part 6g which has is provided. A hollow central recess 6h that is recessed from the end face in the axial direction is formed on the tip end side of the knob mounting portion 6g.

  Moreover, the hollow center recessed part 6h is provided over the whole knob attaching part 6g except the column-shaped thick shaft part 6a of the rotating shaft 6. FIG. That is, the hollow central recessed portion 6h is a rotation projecting outward from the bearing portion 9b except for a part of the thick shaft portion 6a that is supported by the bearing portion 9b of the mounting plate 9 whose rotation shaft 6 will be described later. The knob 6 is provided on the knob mounting portion 6g on the tip end side of the shaft 6. Then, an exterior operation knob 10 (indicated by a two-dot chain line in FIG. 3) is attached to the tip of this knob attachment portion 6g, and the rotary shaft 6 is rotated.

  Then, by providing a hollow central recess 6h on the tip side of the rotary shaft 6 to which the exterior operation knob 10 is attached, there is little dimensional change due to shrinkage during synthetic resin molding (natural cooling) and rotation. The dimension of the shaft 6 can be formed with high accuracy, and the reliability and workability of attaching the operation knob 10 can be improved. Further, the central recess 6h is provided on the distal end side of the rotating shaft 6 projecting outward from the bearing portion 9b with a depth such that the rotating shaft 6 does not reach the portion supported by the bearing portion 9b. Therefore, since there is no hollow recess in the portion where the rotating shaft 6 is supported by the bearing portion 9b, the bearing strength of the rotating shaft 6 to the bearing portion 9b can be increased.

  The hollow central recess 6h is provided with an inner wall 6i that divides the central recess 6h into approximately two equal parts at positions passing through the axis of the rotary shaft 6. Further, the inner wall portion 6i is provided between the opposed inner side surfaces of the central recess 6h, and the inner wall portion 6i connects between the arc-shaped portion 6e and the linear portion 6f having a D-shaped cross section. It is provided as follows. The inner wall portion 6i is formed at a recessed position in the axial direction from the end surface on the distal end side of the knob mounting portion 6g, and the rotary shaft 6 is formed on the recessed distal end side of the inner wall portion 6i. A gate (not shown) is provided.

  As described above, the inner recessed portion 6h of the rotating shaft 6 is provided with the inner wall portion 6i at a position passing through the axis of the rotating shaft 6, and the inner recessed portion 6h is provided between the opposing inner side surfaces of the central recessed portion 6h to divide the central recessed portion 6h. Thus, the size of the central recess 6h can be reduced individually, and the overall strength of the rotating shaft 6 can be increased. Further, even if the cross section on the tip side of the rotating shaft 6 is formed in a D-shape, the inner wall portion 6i is provided so as to connect between the arc-shaped portion 6e and the linear portion 6f. Even if the mounting portion of the knob 10 has a linear engaging portion that is easily deformed, the inner wall portion 6i is connected to the arc-shaped engaging portion that is difficult to deform. The strength can be maintained.

  Further, the inner wall 6i is formed at a position recessed from the end surface on the front end side of the rotating shaft 6, and by setting the recessed front end side of the inner wall 6i as a gate position at the time of molding of the rotating shaft 6, The gate position can be prevented from appearing on the outer peripheral portion of the rotating shaft 6, and the attachment property with the operation knob 10 can be improved. Further, it is possible to prevent the weld from being generated on the distal end side (knob attachment portion 6g) of the rotating shaft 6 and to increase the strength.

  Further, on the distal end side of the thin shaft portion 6b facing the knob mounting portion 6g of the rotating shaft 6, a protruding portion that protrudes outward in a direction (radial direction) orthogonal to the axial direction of the rotating shaft 6 6j is provided. A pair of the protruding portions 6j are provided at positions facing each other across the rotation center of the rotating shaft 6. And this protrusion part 6j engages with the engaging recessed part 7e of the rotary body 7 mentioned later, and the rotating shaft 6 and the rotary body 7 are accommodated in the case 1, and are arrange | positioned rotatably. ing.

  Further, a projection 6k protruding in the axial direction is provided on the end face on the distal end side of the thin shaft portion 6b. The protrusion 6k is arranged in a state of being in contact with the top of the dome-shaped bulged portion 4a of the movable contact 4. When the rotary shaft 6 is pressed in the axial direction, the protrusion 6k presses the bulging portion 4a of the movable contact 4 by the movement of the thin shaft portion 6b in the axial direction, and reverses the bulging portion 4a. The push switch is turned on by making contact with the central fixed contact 2a of the fixed contact 2 disposed on the surface.

  The rotating body 7 is also made of an insulating material such as synthetic resin, and has a cylindrical guide tube portion 7a and a disc-shaped rotating plate portion 7b. Further, the rotating body 7 is provided with a central through hole 7c penetrating in the axial direction of the rotary shaft 6. The central through hole 7c is continuous with the central through hole 7c and is a protruding portion of the rotary shaft 6. A through recess 7d through which 6j can be inserted is provided. Moreover, while having a predetermined angle with respect to the rotation center of this penetration recessed part 7d and the rotating shaft 6, in the front side which the rotating shaft 6 protrudes from the bearing part 9b and the rotary body 7, ie, the cylindrical guide cylinder part 7a side. An engaging recess 7e having a bottomed locking wall portion 7f is provided. In the present embodiment, the through recess 7d and the engagement recess 7e are formed in a substantially orthogonal direction (approximately 90 degrees).

  Further, a pair of penetrating recesses 7d and engaging recesses 7e are provided at positions facing each other so as to correspond to the pair of protrusions 6j and 6j of the rotating shaft 6. The thin shaft portion 6 b of the rotating shaft 6 is inserted into the central through hole 7 c from the front side of the guide tube portion 7 a of the rotating body 7, and the pair of projecting portions 6 j and 6 j of the rotating shaft 6 are connected to the rotating body 7. The pair of penetrating recesses 7d and 7d are inserted. When the rotary shaft 6 is rotated by a predetermined angle (approximately 90 degrees in the present embodiment) from the inserted state, the pair of protrusions 6j and 6j of the rotary shaft 6 are at a predetermined angle with the through recesses 7d and 7d. Rotate to the position of a pair of engaging recesses 7e, 7e provided to engage with the pair of engaging recesses 7e, 7e while being able to be locked to the pair of locking wall portions 7f, 7f. It has become a thing.

  When the thin shaft portion 6b of the rotating shaft 6 is inserted into the central through hole 7c of the rotating body 7 and the pair of protruding portions 6j and 6j are engaged with the engaging recesses 7e and 7e, the rotating body 7 is A pair of protrusions 6j, 6j of the rotating shaft 6 is provided so as to be movable in the axial direction of the rotating shaft 6 in the engaging recesses 7e, 7e. For this reason, the push operation of the push switch and the rotation operation of the rotation detection means are possible with a simple configuration.

And since the protrusion part 6j of the rotating shaft 6 engages reliably with the engaging recessed part 7e of the rotating body 7, and the rotating shaft 6 is hold | maintained integrally with the rotating body 7, the rotating shaft 6 is large force. Even when pulled, the protruding portion 6j abuts against the locking wall portion 7f of the rotating body 7, so that the protruding portion 6j does not come out and the pulling strength of the rotating shaft 6 can be improved.
The rotating body 7 has a cylindrical guide tube portion 7a and a disc-shaped rotation plate portion 7b, and a locking wall portion 7f of the engaging recess 7e is formed on the guide tube portion 7a side. As a result, the thickness of the locking wall portion 7f can be increased, so that the rotation shaft 6 can be more reliably prevented from coming off.

  Further, a pair of protrusions 6j of the rotating shaft 6 are provided at positions facing each other across the rotation center of the rotating shaft 6, and the through recess 7d and the engaging recess 7e of the rotating body 7 engaged with the pair of protrusions 6j, 6j. And a pair of protrusions 6j, 6j corresponding to the pair of projecting portions 6j, 6j, so that the rotation of the rotating shaft 6 can be reliably transmitted to the rotating body 7 and stable rotation operation is possible. In addition, since it can be assembled even if the rotary shaft 6 is rotated 180 degrees, assembly is facilitated and workability is improved.

  When the rotary shaft 6 is pressed in the axial direction, the projection 6k presses the bulging portion 4a of the movable contact 4 to turn on the push switch disposed below. At this time, the engagement dimension (L1) in the axial direction of the engagement surface where the pair of protrusions 6j, 6j of the rotating shaft 6 and the pair of engaging recesses 7e, 7e of the rotating body 7 engage with each other is determined by the push switch. The operation stroke, that is, the protrusion 6k of the rotating shaft 6 is formed to be larger than the stroke (L2) for turning the fixed contact 2 on by reversing the bulging portion 4a of the movable contact 4 (L1> L2). (See Figure 4)

  Thus, in this embodiment, the rotary shaft 6 is provided so as to be movable in the axial direction, and is provided with a push switch that is operated by pressing the rotary shaft 6, and the protruding portion 6 j of the rotary shaft 6 and the rotating body are provided. Since the engagement dimension (L1) in the axial direction of the engagement surface with which the engagement recesses 7e of 7 are engaged with each other is formed larger than the operation stroke (L2) of the push switch, the pressing operation of the push switch Even when the projection 6j of the rotating shaft 6 is not detached from the engaging recess 7e of the rotating body 7, the coupling between the rotating shaft 6 and the rotating body 7 can be ensured.

  In addition, on the upper surface side (the guide tube portion 7a side) of the rotating plate portion 7b of the rotating body 7, a click cam portion 7g composed of a plurality of concave and convex portions is provided in an annular shape so as to surround the guide tube portion 7a. The click cam portion 7g is in sliding contact with the click leaf spring 8, so that a click feeling during rotation can be obtained. In addition, a plurality of boss portions 7h (three in this embodiment) are provided in the circumferential direction at the outer side of the central through hole 7c on the lower surface side (the side opposite to the guide tube portion 7a) of the rotating plate portion 7b. The round hole of the mounting piece 5b of the slider 5 is inserted into the boss portion 7h, and is fixed by a method such as caulking so that it can be integrally rotated with the rotating body 7.

  The leaf spring 8 is made of a thin metal plate having elasticity, and a pair of substantially U-shaped spring portions 8a having a large opening at the center and an outer peripheral portion of the spring portion 8a facing each other. It has fitting parts 8b and 8b. Further, a protrusion 8c is provided at one center of the spring portion 8a, and concave notches 8d and 8d are provided in the pair of fitting portions 8b and 8b, respectively.

  The leaf spring 8 has a rotating shaft 6 and a guide cylinder portion 7a of the rotating body 7 inserted through a central opening of an annular spring portion 8a, and a protrusion 8c of the spring portion 8a is a rotating plate portion 7b of the rotating body 7. A pair of fittings into the pair of concave grooves 1d and 1d and the projecting pieces 1e and 1e formed on the upper surface side of the storage portion 1a of the case 1 in a state of being in contact with the click cam portion 7g formed on The portions 8b and 8b and the notches 8d and 8d are fitted, positioned, and attached.

  The mounting plate 9 that constitutes the housing together with the case 1 is made of a metal plate material such as a tinned steel plate, and is an upper plate portion made of a substantially flat plate-like portion disposed on the front side from which the operation shaft 6 of the case 1 protrudes. 9a and a large opening that extends upward in the center of the upper plate portion 9a by drawing or the like and rotatably supports (guides) the thick shaft portion 6a of the rotating shaft 6 and the guide tube portion 7a of the rotating body 7. And a cylindrical bearing 9b.

  Further, a plurality of mounting leg portions 9c and 9c that are bent and extended in a direction opposite to the bearing portion 9b and a pair of opposite peripheral edges are also bent at the peripheral rectangular portion of the upper plate portion 9a. A pair of elastically deformable mounting legs 9d and 9d are provided that extend in the same direction as the mounting leg 9c and are provided with a snap part 9g formed of a bent part on the tip side. The pair of mounting legs 9d, 9d is provided with a first mounting hole 9e formed of a rectangular through-hole in the vicinity of the bent portion with the upper plate portion 9a. A second attachment hole 9f, which is also a rectangular through-hole, is provided on the surface intersecting the upper plate portion 9a in the vicinity of the hole 9e. In addition, you may make it form these 1st, 2nd attachment holes not only in a hole but in penetration parts, such as a notch.

  And when this attachment plate 9 is attached to the upper surface side (front side) of the storage part 1a of case 1, the rotating shaft 6 and the guide cylinder part 7a of the rotary body 7 are inserted in the cylindrical bearing part 9b. Thus, a pair of mounting legs 9d and 9d are provided on the opposite outer surface of the case 1 with the fitting portion 8b of the leaf spring 8 sandwiched between the housing 1a and the upper surface side of the case 1. The pair of guide grooves 1b and 1b are inserted and engaged, and the protrusion 1e of the case 1 is locked and positioned by being inserted into the first mounting hole 9e, and the locking protrusion 1c is the second mounting. By being locked and engaged with the hole 9f, the attachment plate 9 is attached so as to cover the opening-shaped storage portion 1a of the case 1 in a state where the attachment plate 9 is temporarily fixed to the case 1. .

  At this time, the leaf spring 8 has the upper surface of the housing portion 1a of the case 1 in a state where the protrusion 8c of the spring portion 8a is in contact with the click cam portion 7g formed on the rotating plate portion 7b of the rotating body 7. The outer shapes of the pair of fitting portions 8b and 8b are guided in the pair of concave grooves 1d and 1d formed on the side, and the pair of notches 8d and 8d are fitted in the pair of projecting pieces 1e and 1e, respectively. By being positioned, it is securely sandwiched between the case 1 and the mounting plate 9.

  In this way, the leaf spring 8 having the protrusion 8c that engages and disengages with the cam portion 7g is sandwiched between the attachment plate 9 and the case 1, so that the leaf spring 8 is caulked to the attachment plate 9 or the case 1, etc. It is not necessary to fix by this method, and the leaf spring 8 for the click feeling can be easily attached. Further, a pair of mounting legs 9d of the mounting plate 9 are provided across the axis of the rotating shaft 6, and both ends of the leaf spring 8 are locked at the roots of these mounting legs 9d. The leaf spring 8 can be reliably held between the mounting plate 9 and the case 1.

  From this state, the front ends of the plurality of mounting legs 9c formed by bending from the periphery of the upper plate 9a of the mounting plate 9 and extending in the same direction as the mounting legs 9d are respectively connected to the case 1. The mounting plate 9 is finally attached to the case 1 by bending it into a plurality of indentations 1f provided on the bottom surface side using a jig (not shown). In this case, when attaching the attachment plate 9 to the case 1, when the attachment leg portion 9 c is bent to the bottom surface side of the case 1, the second attachment hole 9 f of the mounting leg portion 9 d and the guide groove 1 b of the outer wall of the case 1 are provided. Since the engaging projections 1c are engaged with each other, both of them can be temporarily fixed, so that the mounting leg portion 9c can be bent reliably and easily, and the productivity at the time of assembly is improved. be able to.

  FIG. 4 shows a state in which the electrical component having the above configuration is mounted on a printed circuit board 11 for mounting an electronic device or the like. In this case, as for the electrical component, a snap portion 9g formed of a bent portion provided on the pair of mounting legs 9d included in the mounting plate 9 is inserted into the holes 11a and 11a of the printed circuit board 11, and the mounting leg 9d itself Due to the snapping property (elasticity) of the bent portion, the bent portion is mounted on the printed board by being pressed and positioned on the lower end side of the inner peripheral edge of the hole 11a.

  At the time of mounting, the electrical component is pushed into the hole 11a of the printed board 11 against the resilient force of the mounting leg 9d of the mounting plate 9, but the mounting plate 9 and the case 1 are for mounting. The second mounting hole 9f of the leg portion 9d and the locking projection 1c provided in the guide groove 1b on the outer wall of the case 1 are firmly engaged to receive the force at the time of pushing, whereby the mounting leg portion 9c is caulked. Since this force is not applied to the portion (folded portion), it is possible to prevent the mounting plate 9 from floating from the case 1.

  When the rotating shaft 6 is rotated through the operation knob 10 in the electrical component configured as described above, the rotating body 7 rotates integrally by the engagement between the protruding portion 6j and the engaging recess 7e. The contact pieces 5 c of the slider 5 are in sliding contact with the conductive pattern 3. When a pressing force in the axial direction is applied to the rotating shaft 6, the rotating shaft 6 moves while being guided by the rotating body 7, and the protrusion 6k presses the movable contact 4 so that the push switch is turned on. To do.

  7 to 9 show another embodiment of the electrical component of the present invention. In this case, the difference from the above embodiment is that the configuration of the mounting plate that engages with the case is partially different. In addition, about the same components demonstrated in the said Example, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the present embodiment, the mounting plate 19 is made of a metal plate material such as a tinned steel plate, and is an upper plate made of a substantially flat plate-like portion disposed on the front side from which the rotary shaft 6 that is the operation shaft of the case 1 protrudes. And a large opening that extends upward in the center of the upper plate portion 19a by drawing or the like and rotatably supports (guides) the thick shaft portion 6a of the rotating shaft 6 and the guide tube portion 7a of the rotating body 7. A mounting having a plurality of mounting legs bent from the peripheral edge of the upper plate portion 19a and a snap portion, which is the same as the above embodiment in that it has a cylindrical bearing portion 19b. The structure of the legs is partially different.

  That is, in this embodiment, as shown in FIG. 7, the rectangular portion located on the diagonal line of the upper plate portion 19 a is bent and extended in a direction facing the bearing portion 19 b (downward side). A plurality of mounting leg portions 19c are provided, adjacent to the same position where the mounting leg portions 19c are provided, and similarly bent and extended in a direction facing the bearing portion 19b (downward side). Four mounting legs are provided.

  As shown in FIGS. 8 and 9, these mounting legs are provided at positions where the positions of the snap portions formed of the bent portions formed on the front end side are different in size from the bottom surface of the case 1. . That is, in the one pair of first mounting legs 19d shown in FIG. 8, the position dimension (M1) from the bottom surface of the case 1 of the snap part 19g formed of a bent part is different from that shown in FIG. The other pair of second mounting legs 20d arranged in the intersecting direction is set to be longer than the position dimension (M2) from the bottom surface of the case 1 of the snap portion 20g formed of a bent portion. (M1> M2).

  8 and 9 show a mounting printed board (indicated by a two-dot chain line) on which electrical components are mounted. In this case, the thickness of the printed board 21 shown in FIG. 8 is, for example, 1.6 mm. The thickness of the printed circuit board 22 shown in FIG. 9 is, for example, 1.2 mm. In FIG. 8, the snap portion 19g of the first mounting leg portion 19d is inserted and locked into the hole 21a of the printed circuit board 21 (1.6 mm), and in FIG. The snap portion 20g of the second mounting leg portion 20d is inserted into the hole 22a of the printed circuit board 22 (1.2 mm) and locked.

  As described above, according to the configuration of the present embodiment, the mounting plate 19 is separated from the pair of first mounting legs 19d and 19d, and another pair of second mounting mountings at positions intersecting with the mounting plate 19. The leg portions 20d and 20d are provided to form snap portions 19g and 20g that are engaged with the printed circuit board of the pair of first mounting leg portions 19d and 19d and the pair of second mounting leg portions 20d and 20d. Since the bent portions are provided at positions having different dimensions from the bottom surface of the case 1, the mounting legs 19d and 20d are mounted on the printed circuit board having various plate thicknesses when the electrical components are mounted. By appropriately corresponding to the snap portions 19g and 20g formed at different positions, it is possible to attach them corresponding to the printed boards 21 and 22 having different plate thicknesses.

According to the above-described embodiment of the present invention, the upper plate portion 9a which is a plate-like portion made of a metal plate and disposed on the front side from which the rotating shaft 6 of the case 1 protrudes is bent from the periphery of the upper plate portion 9a. A mounting plate 9 extending at the rear side of the case 1 and having at least a pair of mounting leg portions 9d that can be elastically deformed and provided with a snap portion 9g on the front end side, and facing the outer wall of the case 1 In addition, a second mounting hole 9f is provided in a surface intersecting with the upper plate portion 9a in the vicinity of the bent portion of the mounting leg portion 9d, and the outer wall of the case 1 is formed outwardly corresponding to the second mounting hole 9f. The mounting plate 9 is attached to the case 1 with the locking projection 1c protruding to the second mounting hole 9f and the locking projection 1c engaged with the second mounting hole 9f. When mounting on the printed circuit board 11 for mounting, the mounting legs of the mounting plate 9 Even when the electric component is pushed against the elastic force of the snap portion 9g when d is inserted into the hole 11a of the printed circuit board 11, the second mounting hole 9f of the mounting leg portion 9d and the locking projection of the outer wall of the case 1 Since the force is not applied to the caulking portion (folded portion) of the mounting leg portion 9c by receiving the force at the time of pushing with 1c, the mounting plate 9 can be prevented from being lifted from the case 1. It has become.
In the above-described embodiment, the rotary electric component including the encoder having the common pattern and the code pattern is exemplified as the conductive pattern. However, the present invention is not limited to this, and for example, a rotary type using a resistor as the conductive pattern. It may be a variable resistor or other electrical component.

It is a disassembled perspective view which shows the electrical component of this invention. It is a top view which shows the electrical component of this invention. It is a front view which shows the electrical component of this invention. It is sectional drawing which shows the electrical component of this invention. It is a front view which shows the mounting plate of the electrical component of this invention. It is sectional drawing which shows the attachment plate of the electrical component of this invention. It is a top view which shows the other Example of the electrical component of this invention. It is a front view which shows the state mounted in a printed circuit board in the other Example of the electrical component of this invention. It is a front view which shows the state seen from the direction orthogonal to FIG. 8 in the other Example of the electrical component of this invention. It is a front view which shows the conventional electrical component. It is a bottom view which shows the conventional electrical component. It is sectional drawing which shows the conventional electrical component.

Explanation of symbols

1: Case (housing)
1a: storage part 1b: guide groove 1c: locking protrusion (protrusion)
1d: concave groove 1e: protruding piece 1f: recessed portion 2: fixed contact 2a: central fixed contact 2b: peripheral fixed contact 2c: connection terminal 2d: connection terminal 3: conductive pattern 3a: common pattern 3b: code pattern 3c: connection terminal 3d: connection terminal 4: movable contact 4a: bulging part 4b: outer peripheral edge part 5: slider 5a: base part 5b: mounting piece 5c: contact piece 6: rotating shaft (operation shaft)
6a: Thick shaft portion 6b: Thin shaft portion 6c: Step portion 6d: Flat surface 6e: Arc-shaped portion 6f: Linear portion 6g: Knob mounting portion 6h: Central concave portion 6i: Inner wall portion 6j: Projection portion 6k: Projection 7: Rotating body 7a: Guide tube portion 7b: Rotating plate portion 7c: Central through hole 7d: Through recess 7e: Engaging recess 7f: Locking wall portion 7g: Cam portion 7h: Boss portion 8: Leaf spring 8a: Spring portion 8b: Fitting part 8c: Protruding part 8d: Notch part 9: Mounting plate (housing)
9a: Upper plate part (plate-like part)
9b: Bearing portion 9c: Mounting leg portion 9d: Mounting leg portion 9e: First mounting hole 9f: Second mounting hole (through portion)
9g: Snap part (bent part)
10: Operation knob 11: Printed circuit board 11a: Hole 19: Mounting plate 19a: Upper plate part (plate-like part)
19b: Bearing portion 19c: Mounting leg portion 19d: First mounting leg portion 19g: Snap portion (bent portion)
20d: Second mounting leg portion 20g: Snap portion (bent portion)
21: Printed circuit board 21a: Hole 22: Printed circuit board 22a: Hole

Claims (7)

  A case having a storage part, an operation shaft inserted into the case storage part and having one end projecting from the case, a signal generating means for outputting an electric signal in accordance with the operation of the operation shaft, and a metal plate A plate-like portion disposed on the front side from which the operation shaft of the case protrudes, and an elastic member that is bent from the peripheral edge of the plate-like portion and extends to the rear side of the case and has a snap portion on the tip side A mounting plate having at least a pair of mounting leg portions that can be deformed, and a projection projecting outwardly on the outer wall of the case, and the plate-like portion of the mounting leg portion corresponding to the projection. An electrical component characterized in that a through portion made of a hole or a notch is provided on a surface intersecting with the mounting plate, and the mounting plate is attached to the case in a state where the projection is engaged with the through portion.   The mounting plate is provided with a plurality of mounting legs bent from the periphery of the plate-like portion and extending in the same direction as the mounting legs, and the front end side of the mounting leg is on the bottom surface side of the case The electric component according to claim 1, wherein the mounting plate is attached to the case by being bent into two.   The housing portion of the case is formed in a box shape with an opening on the front side, the opening is covered with a plate-like portion of the mounting plate, and a cylindrical bearing portion is provided integrally with the plate-like portion. The electrical component according to claim 1, wherein the operation shaft is rotatably inserted into the part.   A plate having a rotating body that can rotate in accordance with the rotation of the operation shaft, and a plurality of concave and convex cam portions provided on the front side of the rotating body, and a projection portion that engages with and disengages from the cam portion. The electrical component according to claim 3, wherein a spring is sandwiched between the mounting plate and the case.   A pair of mounting legs of the mounting plate are provided across the axis of the operation shaft, and both ends of the leaf springs are locked at the roots of the mounting legs. The electrical component according to claim 4.   The signal generating means is provided in a slider that rotates as the operating shaft rotates, and a housing portion of the case, and generates an electrical signal by sliding contact with the slider to rotate the operating shaft. The electrical component according to claim 1, further comprising a conductive pattern for detecting   In addition to the pair of mounting legs, the mounting plate is provided with a pair of second mounting legs at a position intersecting with the pair of mounting legs, and the pair of mounting legs and the pair of second legs. The bent portions forming snap portions engaged with the printed circuit board with the mounting legs are respectively provided at different positions from the bottom surface of the case. Electrical parts.

Images