JP2006186061A - Variable resistor with switch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a variable resistor with the switch in which natural feeling of click is ensured and a shape of switch portion is formed smaller. <P>SOLUTION: The click mechanism is constituted to provide a click member 53 and a plate spring 54 for click. A resistor unit is constituted to comprise a resistance board 57k and a first slider including a contact 58a1. A rotary switch is constituted to comprise a second insulating case 59 as a contact board and a second slider including a contact 58d1. When a rotating axis 52 is rotated, the contact 58d1 slides on the contact board 59k to change over the switch, a second extruded part 54d of the plate spring 54 for click is disengaged to the projected part 53b of the click member 53, and subsequently the first extruded part 54c of the plate spring 54 for click is disengaged to the engaged projected part 53a of the click member 53, thereby resulting in generation of different feelings of click. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a variable resistor with a switch that includes a switch unit and a resistor unit, and has a click mechanism that causes a click feeling when a rotating shaft is rotated.

  As this type of conventional technology, for example, there is a technology described in Patent Document 1. 11 to 14 are diagrams showing a variable resistor with a switch described in Patent Document 1, FIG. 11 is a side sectional view, and FIG. 12 shows a switch unit provided in the variable resistor with a switch shown in FIG. FIG. 13 is a plan view showing a click plate provided in the variable resistor with switch shown in FIG. 11, and FIG. 14 is an operation explanatory view of the click mechanism provided in the variable resistor with switch shown in FIG.

  The conventional technology shown in FIGS. 11 to 14 includes a bearing 1, a rotating shaft that is rotatably held by the bearing 1, that is, an operating shaft 2, and a click mechanism 3 that operates in accordance with the rotation of the operating shaft 2. The switch unit 4 and the resistor unit 5 are provided.

  The click mechanism 3 includes a click plate 6 that rotates integrally with the operation shaft 2 and a leaf spring 8 that is fixed to the first housing 7. As shown in FIGS. 13 and 14, the click plate 6 is connected to the flat portion 9 and is provided apart from the protruding portion 10, and the protruding portion 10 that engages and disengages the bulging portion 12 of the leaf spring 8. Engagement protrusions 11a to 11c, each of which includes a plurality of concavo-convex portions and engages and disengages the bulging portion 12 of the leaf spring 8, are provided.

  As shown in FIG. 11, the switch unit 4 includes a drive body 13 that rotates integrally with the operation shaft 2, an insulating cam 14 that is driven by the drive body 13 and supported by the support shaft 21, and a second housing. As shown in FIG. 12, the insulating substrate 18 integrated with the body 17, the movable contact piece 19 that is always connected to one terminal 15 and is in contact with and separated from the other terminal 16, and one end locked to the insulating cam 14. And a reversing wire spring 20 whose other end is locked to the movable contact piece 19.

  As shown in FIG. 11, the resistor unit 5 includes a slider receiver 22 that rotates integrally with the operation shaft 2, sliders 23 and 24 attached to both surfaces of the slider receiver 22, and The resistance boards 28 and 29 integrated with the third housing 25 and the terminals 26 connected to the resistance boards 28 and 29 are provided. , 27.

  In the related art configured as described above, when the operation shaft 2 is in the initial position, the insulating cam 14 of the switch unit 4 is held in the state shown in FIG. 12, and the bulging portion 12 of the leaf spring 8 of the click mechanism 3 is 14 is stationary at a point A of the flat portion 9 of the click plate 6 shown in FIG.

  When the operating shaft 2 is rotated forward from this state, the drive body 13 of the switch unit 4 is rotated, and accordingly, the insulating cam 14 is rotated counterclockwise in FIG. 12, and the insulating cam 14 is rotated by a predetermined amount. At this point, the insulating cam 14 snaps due to the elastic force of the wire spring 20, and the movable contact piece 19 contacts the terminal 16. Thereby, the switch unit 4 is switched from OFF to ON via the movable contact 19 between the terminal 15 and the terminal 16.

  Subsequently, when the operating shaft 2 is rotated forward, the sliders 23 and 24 attached to the slider receiver 22 are respectively connected to the resistance substrate 28 as the slider receiver 22 of the resistor unit 5 rotates. , 29 on the resistor. As a result, a signal corresponding to the amount of rotation of the operating shaft 2 is output from the resistor unit 5.

Further, when the operating shaft 2 is rotated as described above and the insulating cam 14 is snapped via the wire spring 20 of the switch unit 4, a click feeling is generated, and the movable contact by the snapping action of the insulating cam 14 is generated. In synchronism with the contact operation between the piece 19 and the terminal 16, the bulging portion 12 of the leaf spring 8 of the click mechanism 3 is engaged with and disengaged from the protrusion 10 of the click plate 6 shown in FIG. Can be obtained. That is, a click feeling in which the first click feeling due to the snap action of the insulating cam 14 and the second click feeling due to the bulging portion 12 of the leaf spring 8 engaging and disengaging with the protrusion 10 of the click plate 6 is obtained. It is supposed to be. When the operation shaft 2 is further rotated forward, the bulging portion 12 of the leaf spring 8 of the click mechanism 3 is engaged with and disengaged from the engagement protrusions 11a to 11c of the click plate 6, and in accordance with the rotation of the operation shaft 2, that is, a resistor unit. The click feeling corresponding to the signal output of 5 can be obtained.
Utility Model Registration No. 2582824

  As described above, in the conventional technique disclosed in Patent Document 1, when the switch unit 4 is turned on, the first click feeling by the snap operation of the insulating cam 14 and the bulging portion 12 of the leaf spring 8 of the click mechanism 3 are detected. A click feeling combined with the second click feeling engaged with and disengaged from the protrusion 10 of the click plate 6 can be obtained. However, in this conventional technique, there is a concern that a deviation may occur between the time point when the first click feeling is obtained and the time point when the second click feeling is obtained. When such a shift in the click feeling occurs, the resulting click feeling is uncomfortable.

  Further, the above-described prior art has a structure in which a support shaft 21 is provided at an outer position of the driving body 13 and a relatively large insulating cam 14 is attached to the support shaft 21. Thereby, the shape of the switch unit 4 becomes large, and there is also a problem that the overall size cannot be reduced.

  The present invention has been made from the above-described actual state of the prior art, and an object thereof is to provide a variable resistor with a switch that can provide a click feeling that does not cause a sense of incongruity and can reduce the shape of a switch portion. It is in.

  In order to achieve this object, the present invention is integrated with a fixing member, a rotating member including a rotating shaft held rotatably with respect to the fixing member, and either the fixing member or the rotating member. A click member having an engaging projection formed of a plurality of concavo-convex portions, a projection portion disposed at a position corresponding to the vicinity of the rotation end of the rotation member, and the other of the fixing member and the rotation shaft A click leaf spring provided on the click member and having a bulging portion that engages and disengages with the engagement protrusion and the protrusion of the click member to cause a click feeling, a resistance substrate on which a resistor pattern is formed, and the rotating shaft A first slider that slides on the resistor pattern of the resistor substrate by rotation of the resistor board, and a rotary switch that performs a switch switching operation in the vicinity of the rotation end of the rotating shaft, The switch includes a contact board on which a fixed contact is formed, and a second slider that rotates with the rotation of the rotation shaft to form a movable contact. When the rotation shaft is rotated, the second The slider slides on the contact board to switch the switch, and the bulging portion of the click leaf spring engages with or disengages from the engagement protrusion of the click member or the protrusion. It is characterized by a touch that is created.

  According to the present invention configured as described above, when the rotation shaft is at an initial position such as a rotation end, the switch is turned on depending on the contact state between the second slider forming the movable contact of the rotary switch and the fixed contact of the contact board. Or it is hold | maintained in any one state of a switch-off, and the bulging part of the leaf spring for clicks is hold | maintained in the state which does not engage / disengage from the projection part of a click member, and an engagement protrusion.

  When the rotary shaft rotates forward from this state, the rotary switch is switched on or off, and the bulging portion of the click leaf spring is engaged with the protrusion of the click member, and the rotary switch switch. A click feeling corresponding to switching can be obtained.

  When the rotating shaft further rotates forward, a signal corresponding to the amount of rotation of the rotating shaft is output as the first slider slides on the resistor pattern of the resistor substrate. While the signal corresponding to the amount of rotation of the rotating shaft is output in this way, the bulging portion of the click leaf spring is engaged with and disengaged from the engaging protrusions composed of a plurality of concave and convex portions, and the sliding of the first slider described above. A click feeling corresponding to the signal output associated with is obtained.

  On the other hand, in order to return the rotating shaft from the forward rotating state to the initial position, when the rotating shaft is rotated backward and reaches the vicinity of the rotating end, the rotary switch is in either the switch-on state or the switch-off state. It becomes. During this time, engagement / disengagement between the bulging portion of the click leaf spring and the engagement protrusion formed by the plurality of concavo-convex portions of the click member is completed, and the bulge portion of the click leaf spring again engages / disengages with the protrusion portion of the click member. That is, a click feeling corresponding to switch switching (return) of the rotary switch is obtained.

  As described above, according to the present invention, the click feeling is obtained only by the engagement / disengagement operation by the single click mechanism including the click leaf spring having the bulging portion and the click member having the protrusion and the engagement protrusion. Therefore, it is possible to ensure a click feeling that does not cause discomfort. Further, since the rotary switch has only to be set to a shape corresponding to the rotation locus of the second slider rotating with the rotation of the rotary shaft, the shape of the rotary switch can be reduced.

  Further, in the present invention according to the above-mentioned invention, the click leaf spring is a single metal having a first bulging portion that engages and disengages with the engaging protrusion and a second bulging portion that engages and disengages with the protruding portion. It consists of a board.

  According to the present invention configured as described above, the shapes of the first bulge portion and the second bulge portion can be made different. When the shapes are made different in this way, the first bulge portion becomes the engagement protrusion. The click feeling when engaging / disengaging with and the click feeling when the second bulging portion engages / disengages with the protrusion, that is, the click feeling when switching the rotary switch operating near the rotation end of the rotating shaft is changed. It is possible to improve the recognizability of the switch switching operation of the rotary switch.

  According to the present invention, in the above invention, the first bulging portion is provided in a first elastic arm supported at both ends, the second bulging portion is provided in a second elastic arm supported at both ends, and the first bulging portion is provided. The protruding portion and the second bulging portion are arranged at positions facing each other with the rotating shaft interposed therebetween.

  In the present invention configured as described above, since the first bulging portion and the second bulging portion are positioned so as to face each other with the rotation shaft interposed therebetween, the contact pressure between the click member and the click leaf spring is determined. Can be maintained in a good balance, thereby obtaining a structure with a stable force relationship and smooth rotation of the rotating shaft.

  The present invention is characterized in that, in the above invention, the second bulging portion is formed in a larger shape than the first bulging portion.

  According to the present invention configured as described above, the click feeling associated with the engagement / disengagement between the second bulging portion and the protrusion of the click member is the click feeling associated with the engagement / disengagement between the first bulging portion and the engagement protrusion of the click member. Can be larger than That is, the click feeling at the time of the switch switching operation of the rotary switch in the vicinity of the rotation end of the rotating shaft can be increased, and the recognizability of this switch switching operation can be further improved.

  According to the present invention, in the above invention, the engagement protrusion is formed in a cross-sectional triangle shape, the protrusion is formed in a trapezoidal cross section, the first bulging portion is formed in a cross-sectional arc shape, and the second It is characterized in that the bulging portion is formed in a trapezoidal cross section.

  The present invention configured as described above includes a click feeling due to engagement / disengagement between the first bulging portion and the engagement protrusion having a triangular section in the normal rotation of the rotating shaft, and the second bulging portion in the vicinity of the rotating end of the rotating shaft. The click feeling with the protrusion having a trapezoidal cross section can be clearly made different.

  Further, the present invention is the above invention, further comprising a flat hem portion that is connected to the engaging protrusion composed of the plurality of concave and convex portions and is set at a height lower than the convex portion of the engaging protrusion. While the two bulges are engaged with and disengaged from the protrusions, the first bulge is set so as to be positioned on the skirt.

  According to the present invention configured as described above, when the second bulging portion is engaged with and disengaged from the protrusion with the rotation of the rotation shaft, the first bulging portion has a lower height than the convex portion of the engaging protrusion. Since it is located on the set flat hem, the influence of the first bulge is reduced, and the click feeling due to the engagement / disengagement between the second bulge and the protrusion is sharp and clear. It can be. That is, the click feeling at the time of the switch switching operation of the rotary switch can be made clearer.

  Further, the present invention is characterized in that, in the above-mentioned invention, the first bulging portion and the second bulging portion are arranged at positions on substantially the same radius from the rotation axis of the rotating shaft.

  According to the present invention configured as described above, the shape of the click leaf spring can be set small, and accordingly, the shape of the click member can be set small. That is, the shape of the rotary switch can be further reduced.

  Further, the present invention is characterized in that, in the above invention, the resistor substrate and the contact substrate are unitized.

  In the present invention configured as described above, since the resistance substrate and the contact substrate are integrally provided, the rotary switch is switched by contacting the fixed contact of the second slider, and the first slider is the resistance substrate. The timing of signal output by sliding on the resistor pattern can be set with high accuracy.

  According to the present invention, since a single click mechanism including a click member and a click leaf spring is provided, a click feeling that does not cause a sense of incongruity can be obtained, and the click performance can be improved as compared with the conventional one. In addition, since the rotary switch having the second slider that forms the movable contact that rotates with the rotation of the rotating member is provided, there is no need for an insulating cam or the like as in the prior art. Can be small. As a result, it is possible to reduce the overall size, which has been difficult in the past.

  The best mode for carrying out a variable resistor with a switch according to the present invention will be described below with reference to the drawings.

[Basic configuration of this embodiment]
FIG. 1 is an exploded perspective view showing an embodiment of a variable resistor with a switch according to the present invention, and FIG. 2 is a side sectional view of the embodiment.

  As shown in FIGS. 1 and 2, the present embodiment has, for example, a first mounting hole 51a and a second mounting hole 51b at corners located on a diagonal line, and a circular shaft hole 51c at the center. A fixed member having a boss portion 51f that forms a bearing, that is, a bearing 51, and an engagement portion 52a having a non-circular cross-section in the shaft portion and a small-diameter portion 52b in the vicinity of the tip portion, and a bearing And a rotating shaft 52 to be inserted into the shaft hole 51c.

  Further, the bearing 51 includes an insertion hole 53 i through which the boss 51 f of the bearing 51 is inserted. For example, the click member 53 is fixed to the bearing 51. A click leaf spring 54 is disposed to face the click member 53, and the click leaf spring 54 is fixed to a stop plate 55. The rotating shaft 52 and the stop plate 55 constitute a rotating member.

  The central portion has an insertion hole 56c for rotatably holding the arc-shaped protrusions 55a and 55b of the stopper plate 55, and the first mounting hole 56a and the second mounting hole 56b are provided on the diagonal portion. In addition, an insulating spacer 56 as a fixing member fixed to the bearing 51 is provided. Although not shown in the figure, the spacer 56 is formed with a stopper that abuts the stop plate 55 and restricts the rotation angle of the rotary shaft 52 and the stop plate 55 constituting the rotating member.

  Further, the first mounting hole 57a and the second mounting hole 57b are fixed to the spacer 56 and located on the diagonal line, and the insertion hole 57c is formed in the center portion. A first insulating case 57 in which a resistance substrate on which a pattern is formed is embedded is provided. In addition, a first mounting hole 59a and a second mounting hole 59b are provided at the corners located on the diagonal line so as to face the first insulating case 57, and an insertion hole 59c is provided at the central portion. A second insulating case 59 is provided as a contact substrate having a substrate portion (contact substrate portion) on which a central fixed contact and a peripheral fixed contact are formed. Between the first insulating case 57 and the second insulating case 59, the above-described stop plate 55 can be fitted and rotated integrally, and the current collector pattern of the resistance substrate of the first insulating case 57, A first slider composed of an elastic arm 58a etc. that slides on the resistor pattern, a central fixed contact of the contact substrate portion of the second insulating case 59, an elastic arm 58d etc. that slides on the peripheral fixed contact, etc. A slider block 58 having two sliders is arranged.

  In addition, the spacer 60 is fixed to the above-described second insulating case 59 and has a first mounting hole 60a and a second mounting hole 60b in a diagonal position, and a hole 60c in the center. The cam body 61 is accommodated in the hole 60c of the spacer 60 so as to be movable in the axial direction. The cam body 61 and the spacer 60 are connected via spline coupling. That is, the cam body 61 is movable in the axial direction, but is locked so as not to rotate in the rotational direction of the rotary shaft 52. As shown in FIG. 2, the aforementioned small diameter portion 52 b of the rotating shaft 52 is rotatably accommodated in a hole portion 61 a formed in the central portion of the cam body 61.

  Although not shown, a well-known heart cam is formed on the lower portion of the cam body 61. A spacer 63 is disposed below the cam body 61, and one end portion 64 a is swingably supported by the spacer 63 and the other end portion 64 b is supported by the spacer 63. A pin 64 that engages the heart cam is attached.

  Further, a third insulating case 65 is provided which is fixed to the spacer 60 and has mounting holes such as a first mounting hole 65a. In the third insulating case 65, as shown in FIG. 2, the above-described cam body 61, a spring 62 for urging the cam body 61 in the right direction so as to contact the spacer 60, and a pin 64 are provided. A holding spacer 63 is accommodated. As shown in FIG. 2, the pin 64 is biased by a leaf spring 67 so as to engage with a heart cam (not shown) of the cam body 61.

  The bearing 51, the spacer 56, the first insulating case 57, the second insulating case 59, the spacer 60, and the third insulating case 65 described above are integrated by the first rivet 66a and the second rivet 66b to form a fixing member. is doing.

  That is, the first rivet 66a is provided with the first mounting hole 65a of the third insulating case 65, the first mounting hole 60a of the spacer 60, the first mounting hole 59a of the second insulating case 59, and the first mounting of the first insulating case 57. The hole 57a, the first mounting hole 56a of the spacer 56, and the first mounting hole 51a of the bearing 51 are inserted. The second rivet 66b is a second mounting hole (not shown) of the third insulating case 65, the second mounting hole 60b of the spacer 60, the second mounting hole 59b of the second insulating case 59, and the second mounting of the first insulating case 57. It is inserted into the hole 57 b, the second mounting hole 56 b of the spacer 56, and the second mounting hole 51 b of the bearing 51. As a result, the entire structure is integrated as described above.

[Principal configuration of this embodiment]
FIG. 3 is a rear view of the bearing provided in the present embodiment. 4A and 4B are diagrams showing a click member constituting the main part of the present embodiment. FIG. 4A is a plan view, FIG. 4B is a left side view, FIG. 4C is a right side view, and FIG. A rear view, (e) figure is an AA cross-sectional enlarged view of (a) figure, (f) figure is a BB cross-sectional enlarged view of (a) figure. FIGS. 5A and 5B are diagrams showing a click leaf spring and a stop plate constituting the main part of the present embodiment. FIG. 5A is a plan view, FIG. 5B is a right side view, and FIG. 5C is a diagram (a). FIG. 4D is an enlarged sectional view taken along the line CC of FIG. 4D, and FIG. 4D is an enlarged sectional view taken along the line DD of FIG.

  As shown in FIG. 3, on the back side of the bearing 51, in addition to the boss portion 51f that forms the first mounting hole 51a, the second mounting hole 52b, and the shaft hole 51c described above, a pair is formed in the vertical direction. A first recess 51d and a second recess 51e are provided.

  As shown in FIG. 4, the click member 53 includes a first protrusion 53 g and a second protrusion 53 h on the side facing the bearing 51, and the first protrusion 53 g is inserted into the first recess 51 d of the bearing 51. The click member 53 is fixed to the bearing 51 by the second protrusion 53 h being fitted into the second recess 51 e of the bearing 51.

  Further, as shown in FIG. 4A, the click member 53 is provided in the vicinity of the rotation end of the rotary shaft 52, and is provided with an engagement protrusion 53a composed of a plurality of concave and convex portions and a distance from the engagement protrusion 53a. And a protrusion 53b arranged at a position corresponding to the above. As shown in FIGS. 4E and 4F, the engagement protrusion 53a is formed in, for example, a triangular cross section, and the protrusion 53b is formed in, for example, a trapezoidal cross section. As shown in FIGS. 4A and 4B, one end of the engaging protrusion 53a is connected to the engaging protrusion 53a and is lower than the convex portion of the engaging protrusion 53a. A flat first skirt 53e is formed which is set to a height, for example, the same height as the recess of the engaging protrusion 53a. Further, as shown in FIGS. 4A and 4C, the other end of the engagement protrusion 53a is connected to the engagement protrusion 53a and the protrusion of the engagement protrusion 53a. A flat second skirt 53f set to the same height is formed.

  Further, as shown in FIGS. 4A and 4F, a first flat portion 53c is formed between the protrusion 53b and the second skirt 53f, and the protrusion 53b and the first skirt are formed. A second flat portion 53d is formed between the second flat portion 53e and the second flat portion 53e. The heights of the first flat portion 53c and the second flat portion 53d are set to be, for example, higher than the concave portion of the engaging protrusion 53a and lower than the convex portion of the engaging protrusion 53a.

  As shown in FIG. 5, the click leaf spring 54 disposed to face the click member 53 described above is engaged with a first bulge portion 54 c that is engaged with and disengaged from the engagement protrusion 53 a of the click member 53 to cause a click feeling. The second bulging portion 54d is engaged with and disengaged from the protrusion 53b of the click member 53 to generate a click feeling.

  As shown in FIG. 5A, the first bulging portion 54c is formed on the first elastic arm 54a supported at both ends, and the second bulging portion 54d is the second elastic arm 54b supported at both ends. Is formed. The first bulging portion 54c and the second bulging portion 54d are arranged at positions facing each other with the rotating shaft 52 inserted therebetween. Further, as shown in FIG. 5C, the first bulging portion 54c is formed in a circular arc shape, and the second bulging portion 54d is formed as shown in FIG. For example, the second bulging portion 54d is formed in a larger shape than the first bulging portion 54c. Moreover, the 1st bulging part 54c and the 2nd bulging part 54d are arrange | positioned in the position on substantially the same radius from the rotating shaft line of the rotating shaft 52 inserted, for example.

  In the initial position before the rotation shaft 52 is rotated, the first bulging portion 54c is located at the point S1 on the first skirt portion 53e shown in FIG. The positional relationship between the click member 53 and the click leaf spring 54 is set so that the portion 54d is positioned at a point S2 on the first flat portion 53c shown in FIG.

  The click leaf spring 54 described above is fixed to a retaining plate 55 made of synthetic resin, as shown in FIG. That is, the click leaf spring 54 is fixed by crushing the protrusion while the protrusion formed on the stop plate 55 is inserted into the hole formed in the click leaf spring 54.

  The stop plate 55 has the protrusions 55a and 55b described above, and as shown in FIG. 5A, the cross-section with which the engaging portion 52a of the rotating shaft 52 engages is the same non-circular as the engaging portion 52a. It has an engagement hole 55e having an oval cross-sectional shape. The stop plate 55 is configured as a rotating member that rotates integrally with the rotating shaft 52 by the engagement between the engaging portion 52a and the engaging hole 55e. The outer peripheral surfaces of the protrusions 55a and 55b of the stop plate 55 are formed in a cylindrical surface. Further, a pair of opposed step portions 55g (see FIG. 9) are provided on the outer periphery of the stop plate 55, and the step portions 55g are in contact with the stopper portion of the spacer 56 described above to be a rotating member. The rotation angle of the rotating shaft 52 and the stop plate 55 is regulated.

  The click mechanism is constituted by the click member 53, the click plate spring 54, and the stop plate 55 to which the click plate spring 54 is fixed.

  FIG. 6 is an exploded perspective view showing a first insulating case, a slider block, and a second insulating case constituting the main part of this embodiment, and FIG. 7 is an exploded perspective view seen from the reverse direction of FIG. FIG. 8 is a view showing an insulating case constituting the main part of the present embodiment. FIG. 8A is a front view showing the first insulating case, and FIG. 8B is a front view showing the second insulating case.

  As shown in FIGS. 6 to 8, the first insulating case 57 fixed to the spacer 56 described above is made of a synthetic resin, and includes the first mounting hole 57a, the second mounting hole 57b, and the insertion hole 57c described above. In addition, a pair of protrusions formed at the corners of the lower portion, that is, the first protrusion 57d and the second protrusion 57e, and a pair of recesses formed at the corner of the upper portion, that is, the first recess 57f. And a second recess 57g.

  In addition, the bottom wall surface of the large-diameter circular hole 57j constitutes the resistance substrate 57k. The resistance substrate 57k is embedded in the first insulating case 57 by insert molding. As shown in FIG. 8A, an annular current collector pattern 57h and a resistor pattern 57i arranged so as to surround the current collector pattern 57h are printed on the resistance substrate 57k. It is. The current collector pattern 57h is connected to the terminal 57h1 by applying a eyelet to the resistor substrate 57k, and both ends of the resistor pattern 57i are connected to the terminals 57i1 and 57i2 by applying an eyelet to the resistor substrate 57k. Connected to each.

  Further, the second insulating case 59 fixed to the spacer 60 described above is made of synthetic resin, as shown in FIG. 7, in addition to the first mounting hole 59a, the second mounting hole 59b, and the insertion hole 59c described above. , A pair of recesses formed in the corners of the lower part, that is, the first recesses 59h and the second recesses 59i, and a pair of protrusions formed in the corners of the upper part, that is, the first protrusions 59d and the second And a protrusion 59e. The first protrusion 57d and the second protrusion 57e of the first insulation case 57 are fitted into the first recess 59h and the second recess 59i of the second insulation case 59, respectively. By inserting the first protrusion 59d and the second protrusion 59e of the second insulation case 59 into the first recess 57f and the second recess 57g, respectively, the first insulation case 57 and the second insulation case 59 However, the slider block 58 is integrated in a state of being housed between them.

  Further, as shown in FIG. 7, in the second insulating case 59 which is a contact substrate, the bottom wall surface of the large circular hole 59j constitutes a contact substrate portion (substrate portion) 59k. The contact board portion 59k is formed of the same synthetic resin as the second insulating case 59. As shown in FIG. 8B, on the surface of the contact board portion 59k, a central fixed contact 59f made of an annular metal plate and a peripheral fixed made of a metal plate are arranged outside the central fixed contact 59f. The contact 59g is exposed by being embedded in the second insulating case 59 by insert molding. The inner diameter of the center fixed contact 59f is set to be larger than the diameter of the insertion hole 59c of the second insulating case 59, and a pair of protrusions 58g, which will be described later, of the inserted rotating shaft 52 and slider block 58, 58h does not contact the inner peripheral portion of the center fixed contact 59f. Further, the central fixed contact 59f and the peripheral fixed contact 59g are integrally connected to terminals 59f1 and 59g1 extending to the outside of the second insulating case 59, respectively.

  The slider block 58 disposed in the cylindrical space formed by the circular hole 57j of the first insulating case 57 and the circular hole 59j of the second insulating case 59 described above is configured as follows.

  That is, the slider block 58 has a base made of a synthetic resin, and is formed on the elastic arm 58a on the side facing the first insulating case 57 as shown in FIG. A contact 58a1 sliding on the resistor pattern 57i provided on the substrate, and contacts 58b1, 58c1 formed on each of the elastic arms 58b and 58c and sliding on the current collector pattern 57h provided on the resistor substrate 57k. have. The elastic arms 58a, 58b, and 58c are made of a single metal plate, and are embedded in the base of the slider block 58 by insert molding.

  The resistor pattern 57i of the resistance substrate 57k of the first insulating case 57 by the rotation of the rotating shaft 52 by the elastic arm 58a having the contact 58a1, the elastic arm 58b having the contact 58b1, and the elastic arm 58c having the contact 58c1. A first slider that slides on the current collector pattern 57h is configured.

  Further, as shown in FIG. 6, the slider block 58 is formed on the elastic arm 58 d on the side facing the second insulating case 59, and is provided around the contact board portion 59 k of the second insulating case 59. A contact 58d1 that contacts and separates from the fixed contact 59g, and contacts 58e1 and 58f1 that are formed on each of the elastic arms 58e and 58f and are always in contact with the center fixed contact 59f provided on the contact board portion 59k of the second insulating case 59. Have. The elastic arms 58d, 58e, 58f are made of a single metal plate, and the projections provided on the base of the slider block 58 are inserted into the holes formed in the metal plates, and the projections are crushed and fixed. By using the portions 58m and 58n, the metal plate including the elastic arms 58d, 58e and 58f is fixed (see FIG. 9).

  The above-described elastic arm 58d having the contact point 58d1, the elastic arm 58e having the contact point 58e1, and the elastic arm 58f having the contact point 58f1 rotate with the rotation of the rotary shaft 52 to form a second contact. A child is configured.

  Further, as shown in FIG. 7, the slider block 58 includes a pair of protrusions 58i and 58j that protrude to the side facing the first insulating case 57, and as shown in FIG. 6, the second insulating case. A pair of protrusions 58g and 58h protruding on the side facing 59 is provided. The outer peripheral surfaces of these protrusions 58g, 58h, 58i, and 58j are formed in a cylindrical surface, and constitute a rotatable shaft portion. The protrusions 58g and 58h described above are rotatably held in the insertion hole 59c of the second insulating case 59. Further, an insertion hole 58p through which the rotation shaft 52 is inserted is formed in the center portion of the slider block 58.

  A resistor unit is configured by the resistance substrate 57k of the first insulating case 57 having the current collector pattern 57h and the resistor pattern 57i described above and the first slider described above of the slider block 58.

  In addition, a switch unit, that is, a rotary switch, is configured by the second insulating case 59 which is a contact board having the center fixed contact 59f and the peripheral fixed contact 59g described above and the second slider described above of the slider block 58. ing.

  9 is an exploded perspective view showing a stopper plate and a slider block to which a click leaf spring constituting the main part of the present embodiment is fixed, and FIG. 10 is an exploded perspective view seen from the reverse direction of FIG. .

  As shown in FIG. 10, a recess 58k having a large width is formed on the upper side between the protrusions 58i and 58j located on the first insulating case 57 side of the slider block 58, and on the lower side. A recess 58l having a width smaller than that of the recess 58k is formed. Corresponding to this, as shown in FIG. 9, the above-described protrusions 55 a and 55 b formed on the stop plate 55 have a large width dimension (circumferential direction) in which the protrusion 55 a fits into the recess 58 k of the slider block 58. Dimension), and the protrusion 55b is set to a small width dimension that fits the recess 58l.

  By fitting the protrusion 55a of the stop plate 55 into the recess 58k of the slider block 58 and inserting the protrusion 55b into the recess 58l, the stop plate 55 and the slider block 58 Are designed to rotate together. That is, the projecting portions 55a and 55b of the stop plate 55 and the projecting portions 58i and 58j of the slider block 58 constitute one rotating shaft portion whose outer peripheral surface is a cylindrical surface. The first insulating case 57 is inserted into the insertion hole 57c and the insertion hole 56c of the spacer 56 and is rotatably held.

  As described above, the widths of the protrusions 55a and 55b of the stop plate 55 are made different, and the widths of the recesses 58k and the recesses 58l of the slider block 58 are made different, so that Incorrect insertion between the mover blocks 58 is prevented.

  Further, as described above, the fixing portions 55 c and 55 d for fixing the click plate spring 54 to the stop plate 55 are formed by crushing the protrusions formed on the base of the stop plate 55.

  Further, in the present embodiment, as shown in FIG. 9, the deformation of the elastic arms 58 d, 58 e, 58 f beyond a predetermined amount is restricted at a portion located on the second insulating case 59 side of the slider block 58. Step portions 58q and 58r used for positioning the slider block 58 and the second insulating case 59 are formed. Similarly, as shown in FIG. 10, in the portion of the slider block 58 located on the first insulating case 57 side, the elastic arms 58a, 58b, 58c are restricted from being deformed by a predetermined amount or more, and this sliding is also prevented. A step portion 58 s used for positioning the moving element block 58 and the first insulating case 57 is formed. As shown in FIG. 10, a through hole 54e larger than the boss portion 51f of the bearing 51 is provided in the central portion of the click plate spring 54, and the click plate spring 54 and the boss portion 51f are in contact with each other. The rotating shaft 52 is inserted into the through hole 54e while not contacting.

[Operation of this embodiment]
FIG. 2 described above shows a state in which the rotating shaft 52 extends from the bearing 51. However, when the rotating shaft 52 is not rotated, the rotation from the state shown in FIG. An operation of pushing the shaft 52 is performed.

  By pushing the rotary shaft 52, the cam body 61 moves to the left in FIG. 2 against the urging force of the spring 62, and a heart cam (not shown) provided on the lower portion of the cam body 61 moves. As a result, the other end 64b of the pin 64 slides relatively on the heart cam. When the rotation shaft 52 is pushed to a predetermined position and the cam body 61 moves by a predetermined amount, the other end portion 64b of the pin 64 is locked to the lock portion formed on the heart cam, and the cam body 61 and the rotation The axis | shaft 52 will be in a locked state with the form retracted | retracted to the back side. That is, the rotating shaft 52 shown in FIG. 2 is stationary in a state where the rotating shaft 52 is pushed deeper than the state shown in FIG. When the rotary shaft 52 is not used, the rotary shaft 52 can be retracted so as not to interfere with other operations.

  From this state, when the rotating shaft 52 is protruded and the rotating operation of the rotating shaft 52 is to be performed, the rotating shaft 52 is once pushed into the back side. That is, a push / push operation is performed. As a result, the lock between the lock portion of the heart cam and the other end portion 64b of the pin 64 is released, and the lock is released. Therefore, when the pushing force applied to the rotating shaft 52 is loosened, the cam body 61 moves in the direction of the spacer 60 by the biasing force of the spring 62, and the rotating shaft 52 moves in a direction protruding from the bearing 51 integrally with this, The state returns to the state shown in FIG.

  For example, when the rotary shaft 52 is extended from the bearing 51 as shown in FIG. 2 and the rotary shaft 52 is viewed from the front when FIG. 2 is viewed from the right side, the rotary shaft 52 is rotated clockwise. The state rotated to the end in the direction is assumed to be the initial position. When the rotary shaft 52 is in the initial position before being rotated, the contact 58d1 included in the second slider that forms the movable contact of the rotary switch shown in FIG. The contact substrate portion 59k is kept in a position in contact with the peripheral fixed contact 59g, and the contacts 58e1 and 58f1 are kept in contact with the central fixed contact 59f. That is, the center fixed contact 59f and the peripheral fixed contact 59g are in a switch-on state.

  Further, the contact 58a1 included in the first slider constituting the resistor unit shown in FIG. 7 and the like is located on the resistor pattern 57i of the first insulating case 57, and the contacts 58b1 and 58c1 are the current collector pattern 57h. Located on the top.

  Further, the first bulging portion 54c of the click leaf spring 54 shown in FIG. 5 constituting the click mechanism is located at a point S1 on the first hem portion 53e of the click member 53 shown in FIG. 4 (a). The second bulging portion 54d is located at a point S2 on the first flat portion 53c of the click member 53. That is, the first bulging portion 54c is kept in a state where it is not engaged with or disengaged from the engaging protrusion 53a, and the second bulging portion 54d is kept in a state where it is not engaged with or disengaged from the protrusion 53b.

  From this state, when the rotary shaft 52 is viewed from the front and the rotary shaft 52 is rotated forward in the counterclockwise direction, the rotational force becomes the rotational force of the stop plate 55 via the engaging portion 52a of the rotary shaft 52. Accordingly, the stop plate 55 rotates integrally with the rotary shaft 52, and the protrusions 55a and 55b of the stop plate 55 shown in FIG. 9 and the recesses 58k and 58l of the slider block 58 shown in FIG. The slider block 58 also rotates integrally with the rotary shaft 52 through the joint relationship. That is, the click leaf spring 54 including the first bulging portion 54c and the second bulging portion 54d of the click mechanism, the first slider of the resistor unit including the contacts 58a1, 58b1, and 58c1, and the contacts 58d1 and 58e1. , 58f1 and the second slider, which is a movable contact of the rotary switch, rotate integrally with the rotation of the rotary shaft 52.

  For example, when the rotary shaft 52 is slightly rotated, the contact 58d1 of the rotary switch is separated from the peripheral fixed contact 59g of the contact board portion 59k of the second insulating case 59, thereby the central fixed contact 59f and the peripheral fixed contact 59g. Are rendered non-conductive, and a switch-off signal is output via the terminals 59f1 and 59g1.

  Further, when the rotating shaft 52 is rotated, the contact 58a1 shown in FIG. 7 of the resistor unit slides on the resistor pattern 57i of the resistance substrate 57k of the first insulating case 57 shown in FIG. 8, and the terminals shown in FIG. A signal corresponding to the amount of rotation of the rotating shaft 52 is output via 57h1.

  As described above, when the rotary shaft 52 is rotated and the rotary switch is turned off, that is, in the vicinity of the rotary end of the rotary shaft 52, a first click feeling is obtained, and the rotary shaft 52 rotates forward. Then, while the signal is output from the resistor unit, for example, a second click feeling different from the first click feeling is obtained.

  That is, when the rotary switch is switched from on to off, the second bulging portion 54d of the click leaf spring 54 shown in FIGS. (A) From the 1st flat part 53c of the click member 53 shown to a figure, it slides to the clockwise direction of the (a) figure of FIG. 4, and it engages / disengages from the projection part 53b, and reaches the 2nd flat part 53d. The first click feeling described above is obtained by the engagement / disengagement of the second bulging portion 54d and the protruding portion 53b. While the second bulging portion 54d and the projection 53b are engaged and disengaged as described above, the first bulging portion 54c of the click leaf spring 54 shown in FIGS. 4 (a) slides on the flat first skirt 53e of the click member 53 shown in FIG.

  Further, when the rotating shaft 52 rotates, the first bulging portion 54c of the click leaf spring 54 is engaged with and disengaged from the engaging protrusion 53a including a plurality of concave and convex portions shown in FIG. 4A, and the second click described above. A feel is obtained. It should be noted that while the first bulging portion 54c and the engaging projection 53a are engaged and disengaged in this way, the second bulging portion 54d of the click leaf spring 54 is connected to the click member 53 shown in FIG. 2 Slide on the flat portion 53d.

  On the other hand, in order to return the rotating shaft 52 to the initial position from the state where the rotating shaft 52 is rotated forward as described above, when the rotating shaft 52 is rotated in the reverse direction and reaches the vicinity of the rotating end, it is included in the second slider of the rotary switch. The contact 58d1 shown in FIG. 6 comes into contact with the peripheral fixed contact 59g shown in FIG. 8B, and is switched on. At this time, the second bulging portion 54d of the click leaf spring 54 slides in the counterclockwise direction of FIG. 4A from the second flat portion 53d shown in FIG. It engages / disengages from the portion 53b and further reaches the first flat portion 53c. The first click feeling described above can be obtained again by engaging / disengaging the second bulging portion 54d and the protruding portion 53b.

  As described above, in this embodiment, the rotary switch 52 can be turned on and off by rotating the rotary shaft 52, and a signal corresponding to the rotation amount of the rotary shaft 52 is output from the resistor unit. Can be made. Furthermore, the first click feeling when the rotary switch is turned on / off by the click mechanism and the second click feeling associated with the rotation of the rotary shaft 52 in the switch-off state of the rotary switch can be obtained.

[Effect of this embodiment]
The embodiment configured as described above includes a click leaf spring 54 having a first bulging portion 54c formed on the first elastic arm 54a and a second bulging portion 54d formed on the second elastic arm 54b, and a plurality of click leaf springs 54. Since the click feeling is obtained only by the engagement / disengagement operation by the single click mechanism composed of the engaging protrusion 53a composed of the uneven portion and the click member 53 having the protrusion 53b, the click feeling that does not cause a sense of incongruity is obtained. Can be secured, and excellent click performance can be obtained. The rotary switch may be set to a shape corresponding to the rotation locus of the contact point 58d1 of the elastic arm 58d included in the second slider that rotates as the rotation shaft 52 rotates. Since no separate member such as a cam is required on the outside, the shape of the rotary switch can be reduced. As a result, the overall size can be reduced.

  Further, in this embodiment, the click leaf spring 54 made of a single metal plate has the first bulge portion 54c and the second bulge portion 54d, so that the first bulge portion 54c is engaged with the engagement protrusion 53a. Click feeling when removing and click feeling when the second bulging portion 54d engages and disengages with the projection 53b, that is, click feeling during switch switching operation of the rotary switch operating near the rotation end of the rotating shaft 52. The recognition of the rotary switch switching operation can be improved.

  That is, in the present embodiment, the engagement protrusion 53a of the click member 53 is formed in a triangular cross section, the protrusion 53b is formed in a trapezoidal cross section, and the first bulging part 54c of the click leaf spring 54 is circular in cross section. Since the second bulging portion 54d is formed in a trapezoidal cross section, the click feeling due to the engagement / disengagement between the first bulging portion 54c and the engaging projection 53a having a triangular cross section, and the rotation of the rotary shaft 52 The click feeling between the second bulging portion 54d near the end and the projection 53b having a trapezoidal cross section can be clearly made different.

  Further, since the second bulging portion 54d of the click leaf spring 54 is formed in a larger shape than the first bulging portion 54c, the relationship between the second bulging portion 54d and the protrusion 53b of the click member 53 is provided. The click feeling associated with disengagement can be made larger than the click feel associated with engagement / disengagement between the first bulging portion 54 c and the engagement protrusion 53 a of the click member 53. That is, it is possible to increase the click feeling when the rotary switch is switched in the vicinity of the rotation end of the rotating shaft 52, and to further improve the recognizability of the switch switching operation.

  Further, when the second bulging portion 54 d of the click leaf spring 54 is engaged with and disengaged from the protrusion 53 b as the rotating shaft 52 rotates, the first bulging portion 54 c is more than the convex portion of the engaging protrusion 53. Since it is located on the flat first hem 53e set at a low height, the amount of elastic deformation of the first bulge 54c is reduced, and the first bulge 54c slides the first hem 53e. The frictional force caused by the movement is reduced. For this reason, since the influence of the 1st bulging part 54c will be reduced compared with the case where the 1st skirt part 53e is high, the click feeling by engagement / disengagement of the 2nd bulging part 54d and the projection part 53b is sharp. It can be clear with That is, the click feeling when the rotary switch is switched can be made clear.

  Further, in the present embodiment, the first bulging portion 54c and the second bulging portion 54d of the click leaf spring 54 are disposed at substantially the same radius from the rotation axis of the rotation shaft 52. The shape of the click leaf spring 54 can be set small, and the shape of the click member 53 can be reduced accordingly. That is, the shape of the rotary switch can be further reduced.

  Further, since the first bulging portion 54c and the second bulging portion 54d of the click plate spring 54 are arranged at positions facing each other with the rotation shaft 52 interposed therebetween, the click member 53 and the click plate spring 54 It is possible to maintain a good balance of contact pressure between them, thereby obtaining a structure having a stable force relationship and improving durability. Further, smooth rotation of the rotating shaft 52 can be realized, and excellent operability can be secured.

  In the present embodiment, the first insulating case 57 and the second insulating case 59 are integrated so as to accommodate the slider block 58, that is, the resistance substrate 57k embedded in the first insulating case 57 and the contact point. Since the second insulating case 59, which is a substrate, is configured as a unit, the rotary switch is switched when the contact 58d1 included in the second slider contacts and separates from the peripheral fixed contact 59g of the second insulating case 59. And the timing with the signal output by the contact 58a1 included in the first slider sliding on the resistor pattern 57i of the resistor substrate 57k can be set with high accuracy, and thereby excellent output performance can be obtained.

[Other Embodiments]
In the above-described embodiment, the click member 53 constituting the click mechanism is fixed to the bearing 51 which is a fixing member, and the first bulge portion 54c and the first bulge portion 54c are engaged with and disengaged from the engagement protrusion 53a and the protrusion portion 53b of the click member 53, respectively. Although the click leaf spring 54 having the two bulging portions 54d is configured to rotate with the rotation of the rotating shaft 52, the present invention is not limited to this configuration. The click plate spring 54 may be fixed to a fixed member, and the click member 53 may be rotated with the rotation of the rotation shaft 52.

  Further, when there is no push lock mechanism for the rotation shaft 52, the stop plate 55 can be omitted, and a click leaf spring or a click member can be provided directly on the rotation shaft 52 which is a rotation member.

  Further, a member constituting a click mechanism such as a click member may be integrally provided on the spacer 56 constituting the fixing member, the first insulating case 57, or the like.

  In the above embodiment, the rotary switch is turned on at the rotation end. However, the present invention is not limited to this, and the rotation switch may be turned off at the rotation end.

It is a disassembled perspective view which shows one Embodiment of the variable resistor with a switch of this invention. It is a sectional side view of this embodiment. It is a rear view of the bearing with which this embodiment is equipped. It is a figure which shows the click member which comprises the principal part of this embodiment, (a) A figure is a top view, (b) A figure is a left side view, (c) A figure is a right side view, (d) A figure is a back view, (E) A figure is an AA cross-sectional enlarged view of (a) figure, (f) A figure is a BB cross-sectional enlarged view of (a) figure. It is a figure which shows the leaf spring for a click and stop plate which comprise the principal part of this embodiment, (a) A figure is a top view, (b) A figure is a right view, (c) A figure is C- of (a) figure. C sectional enlarged view, (d) figure is DD sectional enlarged view of (a) figure. It is a disassembled perspective view which shows the 1st insulation case, slider block, and 2nd insulation case which comprise the principal part of this embodiment. It is the disassembled perspective view seen from the reverse direction of FIG. It is a figure which shows the insulation case which comprises the principal part of this embodiment, (a) A figure is a front view which shows a 1st insulation case, (b) A figure is a front view which shows a 2nd insulation case. It is a disassembled perspective view which shows the stop plate to which the leaf | plate spring for a click which comprises the principal part of this embodiment was fixed, and a slider block. It is the disassembled perspective view seen from the reverse direction of FIG. It is a sectional side view which shows an example of the conventional variable resistor with a switch. It is a top view which shows the switch unit with which the variable resistor with a switch shown in FIG. 11 is equipped. It is a top view which shows the click board with which the variable resistor with a switch shown in FIG. 11 is equipped. It is operation | movement explanatory drawing of the click mechanism with which the variable resistor with a switch shown in FIG. 11 is equipped.

Explanation of symbols

51 Bearing (fixing member)
51c Shaft hole 52 Rotating shaft (Rotating member)
52a engaging portion 53 click member 53a engaging protrusion 53b protruding portion 53e first hem portion 54 click leaf spring 54a first elastic arm 54b second elastic arm 54c first bulging portion 54d second bulging portion 55 stopper plate ( Rotating member)
55e engagement hole 56 spacer (fixing member)
57 first insulating case 57h current collector pattern 57h1 terminal 57i resistor pattern 57i1 terminal 57i2 terminal 57k resistor board 58 slider block 58a elastic arm (first slider)
58a1 Contact 58b Elastic arm (first slider)
58b1 contact 58c elastic arm (first slider)
58c1 contact 58d elastic arm (second slider)
58d1 contact 58e elastic arm (second slider)
58e1 contact 58f elastic arm (second slider)
58f1 contact 59 second insulation case (contact board)
59f Center fixed contact 59f1 terminal 59g Peripheral fixed contact 59g1 terminal 59k Contact board part (board part)

Claims (8)

A rotating member including a fixing member and a rotating shaft held rotatably with respect to the fixing member;
A click integrally provided on one of the fixing member and the rotating member, and having an engaging protrusion made up of a plurality of concavo-convex portions and a protruding portion disposed at a position corresponding to the vicinity of the rotating end of the rotating shaft. Members,
A click leaf spring provided on one of the fixed member and the rotating member, and having a bulging portion that engages and disengages the engagement protrusion and the protrusion of the click member to cause a click feeling;
A resistor substrate on which a resistor pattern is formed; a first slider that slides on the resistor pattern of the resistor substrate by rotation of the rotating shaft;
A rotary switch that performs a switch switching operation in the vicinity of the rotation end of the rotation shaft;
The rotary switch includes a contact board on which a fixed contact is formed, and a second slider that rotates with the rotation of the rotating shaft to form a movable contact.
When the rotary shaft is rotated, the second slider slides on the contact board to switch the switch, and the bulging portion of the click leaf spring is engaged with the click member. A variable resistor with a switch, wherein a click feeling is generated by engaging and disengaging the protrusion or the protrusion. In the invention of claim 1,
The click leaf spring is composed of a single metal plate having a first bulging portion that engages and disengages with the engaging projection and a second bulging portion that engages and disengages with the projecting portion. With variable resistor. In the invention of claim 2,
The first bulging portion is provided on the first elastic arm supported at both ends, the second bulging portion is provided on the second elastic arm supported at both ends,
The variable resistor with a switch, wherein the first bulging portion and the second bulging portion are arranged at positions facing each other with the rotating shaft interposed therebetween. In the invention of claim 2 or 3,
The variable resistor with a switch, wherein the second bulging portion is formed in a larger shape than the first bulging portion. In the invention of claim 4,
The engagement protrusion is formed in a triangular cross section, the protrusion is formed in a trapezoidal cross section,
A variable resistor with a switch, wherein the first bulging portion is formed in an arc shape in cross section, and the second bulging portion is formed in a trapezoidal shape in cross section. In the invention according to any one of claims 2 to 5,
A flat hem that is connected to the engaging protrusions composed of the plurality of concave and convex portions and is set at a height lower than the convex portions of the engaging protrusions;
A variable resistor with a switch, wherein the first bulge portion is set on the skirt while the second bulge portion is engaged with and disengaged from the protrusion. In the invention of claim 2,
The variable resistor with a switch, wherein the first bulging portion and the second bulging portion are arranged at positions substantially on the same radius from the rotation axis of the rotating shaft. In the invention according to any one of claims 2 to 7,
A variable resistor with a switch, wherein the resistor board and the contact board are unitized.

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