JP2008177095A - Mode dial - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mode dial allowing its thickness to be reduced as compared with a conventional mode dial, capable of reducing the number of components, and advantageous in terms of manufacturing and cost. <P>SOLUTION: A boss part 1a on a back surface of a dial 1 is inserted into a hole 5b of a dial mounting predetermined position 5a to arrange the dial 1 on the outer surface side of the predetermined position 5a; a click plate 2 made of a sheet metal with parts 2a to be engaged formed at intervals in the circumferential direction is unrotatably positioned on the inner surface side of the predetermined position; a click spring 3 made of a sheet metal with engagement projecting pieces 3b engaging with the parts 2a to be engaged formed thereon is arranged further inside the plate 2 to be unrotatably positioned at the boss part 1a; the click spring 3 is brought into elastic contact with the click plate 2 by fastening it by one screw 4; the click spring 3 is unrotatably positioned at a rotating part 7a of a mode switch 7; and the mode dial is provided as such. The thickness of the mode dial can be reduced by using the clip plate 2 and the click spring 3 made of sheet metals, and the number of components can be reduced to four as well. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a mode dial provided in an electronic device, and more particularly to a mode dial which is thin and reduces the number of parts.

  As this type of mode dial, for example, one shown in FIG. 6 is known. This mode dial is made of synthetic resin and is made of synthetic resin, which is fixedly attached to the lower surface of the dial 10 with three screws 11a and positioned so as not to rotate with respect to the rotating portion 14a of the mode switch 14. Dial presser 12 and a click spring 13 which is fixed by one screw 11b and has a convex bent portion 13a fitted into the concave portion 12a on the outer peripheral surface of the dial presser 12 to give a click feeling. is there.

  On the other hand, it is fixed to the exterior cover, the dial body having a plurality of engagement holes arranged on the back surface so as to be rotatable with respect to the exterior cover, the engagement portion for positioning the rotational position of the dial body, and the exterior cover Rotating dials including a positioning member having a biasing portion that biases the engaging portion and the engaging portion toward the dial main body, a brush, a cord plate, a washer, and the like are known (Patent Literature). 1).

  A dial member that rotates relative to the housing; a steel ball fixed to the housing; and a click plate that is fixed to the dial member with a slit that engages with the steel ball and restricts the rotation of the dial member. A rotating device including a screw for fixing the click plate to the dial member and a contact plate fixed to the click plate in an overlapping manner is also known (Patent Document 2).

Further, a substrate on which a plurality of electrode patterns are formed in a concentric arc shape, a dial member that can be rotated around the center of curvature of the electrode pattern with respect to the substrate, and a dial member that can rotate integrally with the dial member. A dial device composed of a section that contacts an electrode pattern and a rotating plate having a click portion is also known (Patent Document 3).
JP 2006-98773 A JP 2006-98507 A Japanese Patent Application Laid-Open No. 2004-347643

  However, in the conventional mode dial shown in FIG. 6, since the dial 10 and the dial presser 12 are both resin molded bodies and the thickness is large, it is difficult to make the mode dial thin, and when the dial presser 12 has burrs, There was a problem that the resin powder was generated due to friction with the metal click spring 13 and the feel became worse. In addition, a total of four screws 11a and 11b are necessary for mounting and fixing the dial presser 12 to the dial 10 and the click spring 13, so that the assembly workability is not so good and the cost of parts increases. was there.

  On the other hand, the rotary dial of Patent Document 1 uses a positioning member formed of a leaf spring to reduce the thickness. However, since the number of parts is large, the cost is high and the number of assembly steps increases. In addition, there was a problem that it was disadvantageous in terms of cost. Similarly, the rotating devices and dial devices of Patent Documents 2 and 3 have a problem in that they are disadvantageous in terms of manufacturing and cost because of the large number of parts.

  The present invention has been made under the above circumstances, and the problem to be solved is to provide a mode dial that can be made thinner than the conventional mode dial and can reduce the number of parts, and is advantageous in terms of manufacturing and cost. There is.

  In order to solve the above-described problems, the mode dial according to the present invention has a boss formed at the center of the dial back surface inserted into the hole of the dial installation planned location from the outside, and the dial is arranged on the outer surface side of the dial installation planned location. On the other hand, on the inner surface side of the dial mounting planned location, a click plate made of donut plate-like sheet metal formed with a plurality of engaged portions spaced apart in the circumferential direction is non-rotatably positioned and arranged. A click spring made of sheet metal having at least one engaging protrusion that engages with the engaged portion is disposed on the inner side so as to be non-rotatably positioned on the dial boss, and the click spring is positioned on the dial boss. Secure the click spring to the click plate with a single screw, and position the click spring on the rotating part of the mode switch so that it cannot rotate. It is characterized in that the.

  In the mode dial of the present invention, a concave notch is formed on the outer periphery of the click plate, and the convex formed on the dial mounting scheduled portion is fitted into the concave notched portion so that the click plate cannot be rotated to the dial mounting planned location. It is preferable to position the It is also preferable that a small opening is formed in the click spring, and a protrusion formed on the boss portion of the dial is fitted into the small opening so that the click spring is non-rotatably positioned on the boss portion. The click spring preferably has a pair of arm portions protruding to both sides, and preferably has an engaging protrusion at the tip of the arm portion, and the engaged portion formed on the click plate includes a hole and a slit. It is preferably any one of a concave hole and a concave groove.

  In a more specific preferred mode dial of the present invention, a boss formed at the center of the back surface of the dial is inserted from the outside into the hole of the dial attachment planned location, and the dial is arranged on the outer surface side of the dial installation planned location. On the other hand, on the inner surface side of the dial mounting planned location, a donut plate-shaped click plate made of a plurality of engaged portions spaced apart in the circumferential direction is formed on the recessed portion formed on the outer peripheral portion of the click plate. A pair of protrusions that are formed so as to be non-rotatable by being fitted with convex portions formed at dial mounting planned locations, and a pair of protruding protrusions that engage with the engaged portions are further protruded on both sides of the click plate. A click spring made of sheet metal formed at the tip of the arm portion is arranged, and the click spring is doubled by fitting the projection formed on the boss portion of the dial into the small opening formed in the click spring. The click spring is positioned so as not to rotate, and the click boss is screwed to the boss of the dial with a single screw, and the arm on both sides of the click spring is elastically contacted with the click plate to form a click spring. The click spring is non-rotatably positioned and attached to the rotating portion of the mode switch by engaging the engaging protrusion and the pair of arms with the engaged recess formed in the rotating portion of the mode switch. To do.

  Since the click plate and the click spring are made of sheet metal and have a small thickness, the mode dial of the present invention can make the entire mode dial thin. In addition, since it is assembled with a dial, a click plate, a click spring, and one screw, the number of parts and the number of assembly steps are small, which is advantageous in terms of manufacturing and cost. Then, when the dial is turned, the click spring also rotates, and the click spring engaging protrusions that are in elastic contact with the click plate are engaged with the respective engaged portions of the click plate in order, and the click feeling is intermittent. Rotating part of the mode switch is intermittently rotated by the click spring, and the switch is switched. In that case, the amount of force for turning the dial can be changed and adjusted by changing the size of the engaging protrusion of the click spring. In addition, since the click spring made of sheet metal is elastically contacted with the click plate made of sheet metal and rotates, resin powder is not generated and the feeling does not deteriorate as in the prior art.

  And a mode dial that forms a notch on the outer periphery of the click plate, fits the convex part formed at the dial attachment planned place into the above notch part, and positions the click plate at the dial attachment planned place in a non-rotatable manner. Without using any other positioning parts, the click plate can be reliably positioned on the inner surface side of the dial mounting scheduled location with a simple structure, and the increase in the number of parts can be eliminated. In addition, a mode dial in which a small opening is formed in the click spring, a protrusion formed on the boss portion of the dial is fitted into the small opening, and the click spring is non-rotatably positioned on the boss portion also uses other positioning members. Therefore, the click spring can be reliably positioned on the boss portion of the dial in a non-rotatable manner with a simple structure, and an increase in the number of parts can be eliminated.

  Furthermore, the mode dial that has a pair of arm portions projecting to both sides and incorporates a click spring having an engagement protrusion at the tip of the arm portion has the engagement protrusion at the tip by the spring force of the pair of arm portions. The click plate can be securely engaged with the engaged portion of the click plate to perform intermittent rotation with a click feeling. The engaged portion of the click plate can be any of a hole, a slit, a recessed hole, or a recessed groove. If it is, since the engagement and disengagement operations of the click spring with the engagement protrusion are performed smoothly, the click feeling is improved.

  Then, as in a more specific preferable mode dial of the present invention, the engagement protrusion formed on the click spring and the pair of arms are engaged with the engaged recess formed on the rotating portion of the mode switch. In addition to the above-mentioned effects, the click spring is mounted on the rotating part of the mode switch so that it cannot rotate. It is possible to position the rotating portion so as not to rotate, and an increase in the number of parts can be eliminated.

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

  FIG. 1 is an exploded perspective view of a mode dial according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the mode dial viewed from different directions, and FIG. FIG. 4 is a sectional view of the mode dial, and FIG. 5 is a perspective view showing a click spring attached to the mode switch.

  As shown in FIGS. 1 and 2, the mode dial is composed of a synthetic resin dial 1, a sheet metal click plate 2, a sheet metal click spring 3, and one screw 4. Thus, the electronic device is incorporated in a dial attachment scheduled location 5a of a cover (exterior material) 5 of the electronic device and is attached to the mode switch 7 mounted on the substrate 6 inside the electronic device.

  As shown in FIG. 2, the dial 1 has a boss 1a protruding from the center of the back surface, and a screw hole 1b is formed at the center of the boss 1a. A pair of protrusions 1c and 1c are projected from the tip surface of the boss 1a. As will be described later, the projections 1c and 1c are fitted into the small openings 3a and 3a of the click spring 3 to position the click spring 3 so as not to rotate with respect to the boss 1a. The dial 1 is arranged on the outer surface side of the dial attachment planned location 5a by inserting the boss 1a on the back surface into the hole 5b of the dial installation planned location 5a from the outside.

  As shown in FIGS. 1 and 2, the click plate 2 is a donut-shaped plate made of sheet metal, and has a plurality of holes 2a as engaged portions with which the protrusions 3b of the click spring 3 described later are engaged. It is formed at intervals in the circumferential direction, and a plurality of recessed portions 2b are formed at intervals on the outer periphery of the plate. The click plate 2 is arranged on the inner surface side of the dial attachment planned location 5a, and a pair of convex portions 5c and 5c projecting from the dial installation planned location 5a are fitted into the recesses 2b on the outer periphery of the plate. Thus, it is positioned so as to be non-rotatable on the inner surface side of the dial attachment planned location 5a.

  The engaged portion of the click plate 2 only needs to be able to reliably engage the protrusion 3b of the click spring 3, so that in addition to the hole 2a, a slit, a recessed hole, a recessed groove, etc. are engaged. You may make it form as a part. Needless to say, the number of engaged portions may be matched with the number of switching of the mode switch 7.

  As shown in FIGS. 1 and 2, the click spring 3 includes a central disc portion 3c, a pair of substantially C-shaped arms 3d and 3d protruding from the central disc portion 3c on both sides, and a central disc portion 3c. The arm portion and the engaging protrusion 3e protruding in a right angle direction are integrally formed of sheet metal, and a hole 2a (engaged portion) of the click plate 2 is formed at the tip of the pair of arm portions 3d and 3d. A substantially hemispherical engaging protrusion 3b is formed to engage with. A screw insertion hole 3f is formed at the center of the central disc portion 3c, and a pair of small fittings for fitting the pair of protrusions 1c, 1c of the dial boss portion 1a described above on both sides of the screw insertion hole 3f. Openings 3a and 3a are formed.

  This mode dial is incorporated in the dial attachment planned location 5a of the cover 5 of the electronic equipment in the following manner. First, the click plate 2 is arranged on the inner surface side of the dial mounting planned location 5a, and the two convex portions 5c, 5c of the dial mounting planned location 5a are fitted into the two recessed portions 2b, 2b on the outer periphery of the plate, and the click is performed. The plate 2 is non-rotatably positioned on the inner surface side of the dial attachment planned location 5a. Next, the boss 1a on the rear surface of the dial 1 is inserted from the outside into the hole 5b of the dial attachment planned location 5a, and the dial 1 is disposed on the outer surface side of the dial installation planned location 5a. 3, the two projections 1c, 1c of the boss 1a of the dial 1 are fitted into the two small openings 3a, 3a of the click spring 3, and the click spring 3 is positioned so as not to rotate with respect to the boss 1a. Then, the screw 4 is screwed into the screw hole 1b of the dial boss 1a from the screw insertion hole 3f of the click spring 3 to fix the click spring 3, and the arm portions 3d, 3d on both sides of the click spring 3 are elastically applied to the click plate 2. As shown in FIGS. 3 and 4, the mode dial is incorporated into the dial attachment scheduled location 5a.

  When the thus assembled mode dial is mounted on the mode switch 7, as shown in FIG. 5, the engaging protrusion 3e of the click spring 3 and the arms 3d, 3d are connected to the rotating portion 7a of the mode switch 7. The click spring 3 is positioned so as not to rotate with respect to the rotating portion 7a.

  When the dial 1 of the mode dial configured as described above is turned with a finger, the click spring 3 that is positioned so as not to rotate with respect to the boss portion 1a of the dial 1 also rotates and elastically contacts the click plate 2. The engagement protrusions 3b of the arm portions 3d and 3d of the click spring 3 are sequentially engaged with the respective holes 2a (engaged portions) of the click plate 2 to perform an intermittent rotation operation with a click feeling. At the same time, the rotating portion 7a of the mode switch 7 is also intermittently rotated by the click spring 3, and the switch is switched.

  Since the click plate 2 and the click spring 3 are made of sheet metal and have a small thickness, this mode dial can reduce the thickness of the entire mode dial, and the number of parts is also the dial 1, the click plate 2, the click spring 3, and one piece. The total number of screws 4 is 4, which is advantageous in terms of manufacturing and cost since the number of parts and assembly man-hours are small compared to the conventional mode dial. Then, since the click spring 3 made of sheet metal is elastically contacted with the click plate 2 made of sheet metal and rotates, there is no fear that the resin powder is generated and the feel becomes bad as in the prior art. If the size of the child 3b is appropriately changed, the amount of force for turning the dial 1 can be changed and adjusted.

It is a disassembled perspective view of the mode dial which concerns on one Embodiment of this invention. It is the disassembled perspective view which looked at the same mode dial from a different direction. It is the perspective view which looked at the same mode dial incorporated in the dial attachment plan location from the inside. It is sectional drawing of the same mode dial. It is a perspective view which shows the attachment state of the click spring with respect to a mode switch. It is a disassembled perspective view which shows an example of the conventional mode dial.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dial 1a Boss part 1b Screw hole 1c Protrusion 2 Click plate 2a Engagement part (hole)
2b Recessed part 3 Click spring 3a Small opening 3b Engagement protrusion 3d Arm part 3e Engagement protrusion 3f Screw insertion hole 4 Screw 5 Cover 5a Dial installation planned place 5b Hole 5c Projection part 7 Mode switch 7a Rotation part 7b Engagement Joint recess

Claims (6)

  The boss formed at the center of the back of the dial is inserted into the hole of the dial installation location from the outside and the dial is placed on the outer surface of the dial installation location, while the dial is engaged on the inner surface of the dial installation location By inserting a donut plate-shaped click plate made of sheet metal with a plurality of parts spaced apart in the circumferential direction into the notched part formed on the outer peripheral part of this click plate with the convex part formed at the dial mounting scheduled place Positioned in a non-rotatable position, a click spring made of sheet metal formed at the tip of a pair of arms that protrudes on both sides of the engaging protrusion that engages with the engaged part is placed inside the click plate. Then, by fitting the protrusion formed on the dial boss into the small opening formed on the click spring, the click spring is positioned so as not to rotate on the dial boss. The spring is fixed to the boss of the dial with a single screw, the arm on both sides of the click spring is brought into elastic contact with the click plate, and the engagement protrusion formed on the click spring and the pair of arms are connected to the mode switch. A mode dial characterized in that a click spring is non-rotatably positioned and attached to a rotating part of a mode switch by engaging with an engaged recess formed in the rotating part.   The boss formed at the center of the dial back is inserted into the hole of the dial installation planned location from the outside, and the dial is arranged on the outer surface side of the dial installation planned location, while the engaged portion is arranged on the inner surface side of the dial installation planned location. A plurality of donut-shaped sheet metal click plates formed at intervals in the circumferential direction are positioned so as to be non-rotatable, and at least one of the click plates that engages the engaged portion further inside the click plate A click spring made of sheet metal with engaging protrusions is placed and positioned in a non-rotatable position on the dial boss, and this click spring is screwed to the dial boss with one screw and clicked on the click plate A mode dial characterized in that a spring is elastically contacted and a click spring is positioned and attached to a rotating part of a mode switch so as not to rotate.   A concave notch is formed in the outer peripheral portion of the click plate, and a convex portion formed at the dial mounting planned location is fitted into the concave notched portion, so that the click plate is non-rotatably positioned at the dial mounting planned location. The mode dial according to claim 2.   A small opening is formed in the click spring, a protrusion formed on the boss portion of the dial is fitted into the small opening, and the click spring is non-rotatably positioned on the boss portion. The mode dial according to claim 3.   The mode dial according to any one of claims 2 to 4, wherein the click spring has a pair of arm portions projecting to both sides, and the engaging protrusion is provided at a tip of the arm portion.   The mode dial according to any one of claims 1 to 5, wherein the engaged portion formed on the click plate is any one of a hole, a slit, a concave hole, and a concave groove.

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