JP2011070815A - Operation input device and electronic device using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an operation input device which secures a predetermined waterproof property even when external force is loaded from an external. <P>SOLUTION: In the operation input device, when an operation dial 60 supported above a printed board 20 is rotated, magnetic detection sensors 26, 27 mounted on the printed board 20 detect a change of a magnetic field based on the rotating operation of the operation dial 60. Especially, the printed board 20 is mounted on a base 10 having an annular rib 11 projecting on an upper surface outer circumferential edge part, the base 10 is coated with elastic water proof material 40 having a flat surface shape for covering the base 10, caulking projections 73, 74 projecting on a lower surface of a ring shape fixing tool 70 are pressed in water-proof pressing holes 47, 48 arranged on the elastic waterproof material 40, and are caulked and fixed on the base 10 to rotatably retain the operation dial 60. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an operation input device, and more particularly to an operation input device incorporated in a mobile phone, a PDA, a television, and a video electronic device.

  Conventionally, as an operation input device, for example, as shown in Patent Document 1, a disk-shaped rotary operator 10, a case member 11 that rotatably supports the rotary operator 10, and the rotary operator 10 are opposed to each other. The circuit board 12 arranged in the manner described above and a contact connection structure comprising a fixed contact 13 and a movable contact 14 are provided. A rubber-like sheet 15 is provided between the rotary operation element 10 and the circuit board 12, and the rubber-like sheet 15 includes A tilting pressing part 42 that is tiltably supported with respect to the circuit board 12 via a tilting support part 49, and the contact connection structure is spaced at positions corresponding to both ends of the tilting pressing part 42 on the circuit board 12. The rotary operation element 10 is rotated, and the tilting pressing part 42 is supported by the circuit board 12 via the tilting support part 49 and tilts to the rotation direction side of the rotary operating element 10. Arranged on the rotation direction side Rotary input device is a movable contact 14 so as to press the fixed contact 13 side that.

JP 2006-032118 A

However, in the rotary input device described above, as shown in FIGS. 2 and 4, the contact type jog holds an elastic member between the rotary operation unit and the substrate to ensure waterproofness. For this reason, when a large external force is applied to the disk-shaped rotary operation element, the pressure contact force between the rib 44 and the protrusion 43 is lowered, and there is a possibility that the waterproofness is lowered.
An object of the present invention is to provide an operation input device capable of ensuring a predetermined waterproof property even when a large external force is applied from the outside.

  In order to solve the above-described problems, an operation input device according to the present invention is a magnetic detection sensor mounted on the printed circuit board by rotating the operation dial supported above the printed circuit board to rotate the operation dial. An operation input device for detecting a change in a magnetic field based on a dynamic operation, wherein the printed circuit board is mounted on a base having an annular rib projecting on an outer peripheral edge of the upper surface, and has an planar waterproof shape covering the base The operation dial is covered with the base, and a caulking protrusion protruding from the lower surface of the ring-shaped fixture is press-fitted into a waterproof press-fitting hole provided in the elastic waterproof material, and is fixed to the base by caulking. Is configured so as to be pivotably retained.

  According to the present invention, since the printed circuit board is disposed in the annular rib of the base and covered with the elastic waterproof material, even if a large external force is applied to the operation dial, it is difficult for water to invade and a desired waterproof property can be obtained. An operation input device having the above is obtained.

As embodiment of this invention, you may form the annular groove part fitted to the annular rib of a base in the thick part provided in the outer peripheral part of the elastic waterproof material.
According to the present embodiment, the contact area between the elastic waterproof material and the base is increased, and the creeping distance is increased, so that an operation input device with higher waterproofness can be obtained.

As another embodiment of the present invention, a caulking hole is provided in a protruding portion provided by a protruding process in the base, and the outer peripheral edge of the caulking hole is compressed from above and below with the protruding portion and the ring-shaped fixture. Good.
According to this embodiment, the elastic waterproof material is pressed against the outer peripheral surface of the caulking protrusion with a larger contact force, and an operation input device having high waterproofness can be obtained.

The electronic device according to the present invention is configured such that the above-described operation input device is attached to the base of the casing, and the thick portion of the elastic waterproof material is compressed and held by the back surface of the cover of the casing and the annular rib of the base It is good.
ADVANTAGE OF THE INVENTION According to this invention, the electronic device which can prevent reliably the penetration | invasion of the water into a housing | casing is obtained by the cover of a housing | casing and an operation input device compressing the thick part of an elastic waterproof material.

Another electronic device according to the present invention may be one in which the above-described operation input device is attached in advance to the back surface of the cover of the housing.
According to the present invention, since the front of the cover of the housing is preceded, there is an effect that water can be reliably prevented from entering due to variations in the dimensional accuracy and assembly accuracy of the housing, and a highly reliable electronic device can be obtained.

1A, 1B, and 1C are a perspective view, a side view, and a perspective view seen from a different angle, showing a first embodiment of an operation input device according to the present invention. 2A and 2B are cross-sectional perspective views of the operation input device shown in FIGS. 1A and 1C. 3A is a plan view of the first embodiment, and FIGS. 3B and 3C are cross-sectional views taken along line BB and CC of FIG. 3A. It is a disassembled perspective view of 1st Embodiment shown in FIG. It is the disassembled perspective view seen from the downward direction of 1st Embodiment shown in FIG. 6A is a plan view of the elastic waterproof material illustrated in FIG. 4, and FIGS. 6B and 6C are a cross-sectional view taken along line BB and a cross-sectional view taken along line CC in FIG. 6A. It is a perspective view for demonstrating the assembly method of 1st Embodiment. 8A and 8B are cross-sectional views before and after assembly. It is sectional drawing of a different position which shows the assembly after 1st Embodiment. 10A, 10B, and 10C are a plan view, a cross-sectional view taken along the line BB of FIG. 10A, and a cross-sectional view taken along the line CC, showing a second embodiment of the operation input device according to the present invention. It is a disassembled perspective view of 2nd Embodiment shown in FIG. It is the disassembled perspective view seen from the downward direction of 2nd Embodiment shown in FIG. 13A is a plan view of the elastic waterproof material illustrated in FIG. 10, and FIGS. 13B and 13C are a cross-sectional view taken along line BB and a cross-sectional view taken along line CC in FIG. 13A. It is sectional drawing which shows the assembly after 2nd Embodiment. 15A and 15B are perspective views showing a third embodiment of the operation input device according to the present invention. 16A and 16B are a cross-sectional view and a cross-sectional perspective view showing the third embodiment after assembly. 17A and 17B are perspective views of the base according to the third embodiment viewed from different angles.

An embodiment of an operation input device according to the present invention will be described with reference to the accompanying drawings.
As shown in FIGS. 1 to 9, the operation input device according to the first embodiment is roughly composed of a base 10, a flexible printed circuit board 20, a central push button switch 31a composed of a dome-shaped movable contact on the lower surface, and A resin film cover 30 with four push button switches 31b to 31e attached thereto, an elastic waterproof material 40, an operation ring 50 assembled to the elastic waterproof material 40, and a sliding sheet 59 on the operation ring 50. And the ring-shaped fixture 70 that is fitted in the fitting hole 61 of the operation dial 60 and is caulked and fixed to the base 10, and the ring-shaped fixture 70. The push button 80 is engaged and fixed.

  As shown in FIGS. 4 and 5, the base 10 has an annular rib 11 projecting along the outer peripheral edge of a thin circular plate, and a pair of caulking holes 12 and 13 provided at the center thereof, while being provided at the corner. A connection hole 14 is provided.

  The printed circuit board 20 has a connecting portion 21 extending from the outer peripheral edge thereof, and a central conductive portion (not shown) is provided at the center thereof, and is equally on the same circumference around the central conductive portion. Four conductive portions (not shown) are arranged at a proper pitch. The central conductive portion and the conductive portion are composed of an annular fixed contact portion and a fixed contact portion disposed in the annular fixed contact portion. The printed circuit board 20 is formed with two pairs of rectangular through holes 22 and 23 with the central conductive portion in between. Jig holes 24 and 25 are provided outside the pair of through holes 22 and 22, respectively, and magnetic detection sensors 26 and 27 made of Hall elements are surface-mounted outside the remaining pair of through holes 23 and 23. . In addition, the printed circuit board 20 may be obtained by pasting and integrating a flexible printed circuit board on a base made of a thin metal plate.

  The resin film cover 30 has a planar shape that can be coated on the printed circuit board 20, and is a flat dome-shaped reversal spring at a position corresponding to the central conductive portion and the conductive portion on the back surface to which the adhesive is applied. A central push button switch 31a and push button switches 31b to 31e are respectively attached. Further, the resin film cover 30 is provided with through holes 32 and 33 and jig holes 34 and 35 at positions corresponding to the through holes 22 and 23 and the jig holes 24 and 25 of the printed circuit board 20, respectively. . Further, the resin film cover 30 is provided with an escape portion 36 so as not to cover the magnetic detection sensors 26 and 27 assembled to the printed circuit board 20.

  The elastic waterproof material 40 has a planar shape capable of covering the base 10, and extends from the thick part 41 formed on the outer peripheral edge part to the outside with three pitches at an equal pitch. . The thick part 41 has an annular groove 43 that can be fitted to the annular rib 11 of the base 10 on the lower surface thereof. Further, the elastic waterproof material 40 has an operation center projection 44a and operation projections 44b to 44e projecting downward at positions corresponding to the center conductive portion and the conductive portion, while the magnetic sensor 26 is provided. The bulging portions 45a and 45b are provided so as to protrude upward. Further, a fitting central recess 46a and fitting recesses 46b to 46e are formed immediately above the operation center projection 44a and the operation projections 44b to 44e, respectively. Waterproof press-fitting holes 47 and 48 are provided on both sides of the fitting central recess 46a.

  As shown in FIGS. 4 and 5, the operation ring 50 has an outer peripheral shape on which the elastic waterproof material 40 can be placed. The operation ring 50 has operation protrusions 51 to 54 projecting downward at positions corresponding to the fitting recesses 46b to 46e. The operation ring 50 can be mounted with an annular sliding sheet 69 in order to smoothly rotate the operation dial 60 described later.

  As shown in FIGS. 4 and 5, the operation dial 60 has a concentric circular shape that can be disposed in the thick portion 41 of the elastic waterproof material 40, and a ring-shaped fixture 70, which will be described later, can be fitted in the center thereof. A joint hole 61 is provided. The operation dial 60 has an engagement annular step 62 formed on the inner surface of the fitting hole 61, and annular grooves 63 and 64 formed concentrically along the inner peripheral edge of the lower surface. is there. A sliding sheet 69 is incorporated into the bottom surface of the annular groove portion 63, while an annular magnet 66 is incorporated into the bottom surface of the annular groove portion 64 via a double-sided adhesive tape 65. The annular magnet 66 is, for example, one in which N poles and S poles are alternately magnetized, and positioning protrusions 67 are provided on the outer peripheral edge.

  The ring-shaped fixture 70 has an outer diameter dimension that can be fitted into the fitting hole 61 of the operation dial 60, and has a pair of assembling projections 71 projecting from the inner side surface to the inside. The assembly protrusion 71 is provided with a holding hole 72 into which a tip portion such as tweezers can be inserted. Further, the ring-shaped fixture 70 is provided with caulking protrusions 73 and 74 on the bottom surface of the assembling protrusion 71, respectively. Further, the ring-shaped fixture 70 has an engaging step 75 formed on the lower surface thereof. The ring-shaped fixing tool 70 fixes the elastic waterproof material 40 between the base 10 and the operation dial 60 by fixing the caulking protrusions 73 and 74 to the caulking holes 12 and 13 of the base 10, respectively. It is pinched to improve waterproofness.

  The push button 80 has an outer peripheral shape that can be fitted to the ring-shaped fixture 70, and has an operation center protrusion 81 protruding from the center of the lower surface thereof. The push button 80 is prevented from coming off by engaging an elastic claw 82 projecting from the outer peripheral edge of the lower surface thereof with the engagement step 75 of the ring-shaped fixture 70.

Next, a method for assembling the aforementioned component parts will be described.
First, the jig holes 24 and 25 of the printed circuit board 20 are inserted into a pair of positioning pins which are jigs (not shown) and positioned. And the magnetic detection sensors 26 and 27 are installed in the said printed circuit board 20, and are electrically connected. Next, by inserting the jig holes 34 and 35 of the resin film cover 30 into the positioning pins and pasting and integrating them on the printed circuit board 20, a central push button comprising a central conductive portion and a dome-shaped reversing spring on the conductive portion is provided. The switch 31a and the push button switches 31b to 31e are respectively positioned.

  Then, the connection portion 21 of the printed circuit board 20 is inserted into the connection hole 14 of the base 10 and positioned. Next, after the annular groove 11 provided in the thick part 41 of the elastic waterproof material 40 is fitted to the annular rib 11 of the base 10, the operation protrusions 51 to 54 of the operation ring 50 are respectively inserted into the fitting recesses 46b to 46e. Fit and position.

  On the other hand, the sliding sheet 69 is disposed on the bottom surface of the annular groove portion 63 of the operation dial 60, and the annular magnet 66 is fixed to the bottom surface of the annular groove portion 64 via a double-sided adhesive tape 65. Then, the operation dial 60 is rotatably supported by placing and positioning the sliding sheet 69 on the upper surface of the operation ring 50.

Further, the tip of a tweezers (not shown) is inserted into the holding hole 72 of the ring-shaped fixture 70 and picked up to engage with the annular stepped portion 62 of the operation dial 60, and the caulking projections 73 and 74 are provided. The elastic waterproof material 40 is press-fitted into the waterproof press-fit holes 47 and 48. Further, the caulking projections 73 and 74 are inserted into the caulking holes 12 and 13 of the base 10 through the resin film cover 30 and the through holes 33 and 23 of the printed circuit board 20, respectively, and are caulked and fixed. As a result, the operation dial 60 is prevented from coming off, and the elastic waterproof material 40 is sandwiched between the ring-shaped fixture 70 and the base 10. In particular, as shown in FIG. 9, the caulking projections 73 and 74 of the ring-shaped fixture 70 are not only press-fitted into the waterproof press-fit holes 47 and 48 of the elastic waterproof material 40, but also the ring-shaped fixture 70. Since the outer peripheral edge portions of the waterproof press-fitting holes 47 and 48 are compressed from above, there is an advantage that high waterproofness can be secured.
Since the operation ring 50 is biased by the elastic waterproof material 40 and the push button switch 70, no rattling occurs.

  Finally, the operation claw portion 81 of the push button 80 is elastically engaged with the engagement step portion 75 of the ring-shaped fixture 70 so that the operation center projection 81 is fitted in the fitting center recess 46 a of the elastic waterproof material 40. Combined. Since the push button 80 is urged by the elastic waterproof material 40 and the central push button switch 31a, there is no backlash.

Next, as shown in FIGS. 7 to 9, a case will be described in which the operation input device is incorporated in a casing of a mobile phone.
First, as shown in FIG. 7, positioning holes 42 a of the elastic arm portions 42 extending from the elastic waterproof material 40 are fitted to the positioning projections 91 protruding from the base 90 of the mobile phone, and then positioned. As shown in FIG. 8, a cover 92 is attached to the base 90. The cover 92 has an annular step 94 formed on the lower surface of the edge of the opening 93. Therefore, by attaching the cover 92 to the base 90, the thick portion 41 of the elastic waterproof material 40 is compressed by the annular rib 11 of the base 10 and the annular step portion 94 of the cover 92. As a result, water does not enter from the pressure contact portion between the cover 92 and the elastic waterproof material 41 of the operation input device. Further, as shown in FIG. 9, for example, even if water enters the inside from the periphery of the operation dial 60, the caulking projections 73 and 74 of the ring-shaped fixture 70 are connected to the waterproof press-fitting holes 47 and 74 of the elastic waterproof material 40. Since the outer peripheral edge of the press-fitting holes 47 and 48 are compressed from above while being press-fitted into 48, a further higher waterproof property can be secured.

  In this embodiment, not only the assembly structure described above, but also, for example, a positioning protrusion formed on the elastic arm portion 42 of the elastic waterproof material 40 is engaged with a positioning hole provided in the base 90 of the mobile phone. May be attached.

Next, an operation method when the operation input device having the above-described configuration is applied to a mobile phone (not shown) will be described.
When the operation dial 60 is rotated about the axis of the ring-shaped fixture 70, the operation dial 60 is rotated on the operation ring 50 via the sliding sheet 69. Then, as the annular magnet 66 attached to the operation dial 60 is rotated, the pair of magnetic detection sensors 26 and 27 detect the change of the magnetic field, respectively, and detect the rotation direction and the rotation amount based on the change.
The detection result is reflected as the movement of the scroll bar on the screen display of the monitor via a control circuit (not shown). Next, when the scroll bar reaches the desired position, pressing the push button 80 causes the central spring 81 for the central push button switch 31a to be reversed by the central projection 81 for operation, and the corresponding central conductive portion is made conductive. To output a selection command.
Alternatively, the peripheral portions of the operation dial 60 may be pushed down, and the corresponding conductive portions may be made conductive by appropriately reversing the reversal springs of the push button switches 31b to 31e with the operation protrusions 51 to 54 of the operation ring 50, respectively.

  In this embodiment, since it is a non-contact rotation detection method, there is an advantage that a smoother and better operational feeling can be obtained than the rotation detection method by contact according to the conventional example.

In the second embodiment, as shown in FIGS. 10 to 14, crimping holes 12 and 13 are formed in the protruding step portions 15 and 15 formed by protruding the center of the base 10. For this reason, as shown in FIG. 14, the caulking projections 73 and 74 of the ring-shaped fixture 70 are not only press-fitted into the press-fit holes 47 and 48 of the elastic waterproof material 40, but also the press-fit holes of the elastic waterproof material 40. The outer peripheral edge portions 47 and 48 are sandwiched between the protruding step portion 15 of the base 10 and the ring-shaped fixture 70 so as to be compressed from above and below. For this reason, according to Embodiment 2, there exists an advantage that the operation input device which has the further outstanding waterproofness is obtained.
The other parts are the same as those in the first embodiment, and the same parts are denoted by the same reference numerals and the description thereof is omitted.

As shown in FIGS. 15 to 17, the third embodiment is a case where the cover is attached to the back side of the cover 92 of the casing of the mobile phone.
The difference from the first embodiment is that the caulking holes 12 and 13 are formed in the protruding step portions 15 and 15 formed by protruding the central portion of the base 10, respectively, and the mounting holes 16 a are provided in the outer peripheral edge portion thereof. This is a point where a substantially triangular mounting portion 16 is extended.
In this embodiment, by attaching the screw 95 to the back side of the cover 92 of the housing, the variation in waterproofness due to the variation in the dimensional accuracy and assembly accuracy of the housing can be eliminated, and a more reliable waterproof property can be achieved. There is an advantage that an electronic device can be obtained.
The other parts are the same as those in the first embodiment, and the same parts are denoted by the same reference numerals and the description thereof is omitted.

  Of course, the operation input device according to the present invention is not limited to a mobile phone, and may be applied to other mobile devices and other electronic devices.

10: base 11: annular rib 12, 13: caulking hole 14: connection hole 15: protruding step 20: printed circuit board 22, 23: through hole 24, 25: jig hole 26, 27: magnetic detection sensor 30: resin Film cover 31a: Center push button switch 31b to 31e: Push button switch 32, 33: Through hole 34, 35: Jig hole 40: Elastic waterproofing material 41: Thick part 42: Elastic arm part 43: Annular groove 44a: Operation Central protrusions 44b to 44e: Operation protrusions 46a: Fitting central recesses 46b to 46e: Fitting recesses 47, 48: Waterproof press-fit holes 50: Operation rings 51-54: Operation protrusions 60: Operation dial 61: Fittings Hole 62: annular stepped portion for engagement 63, 64: annular groove portion 66: annular magnet 69: sliding sheet 70: ring-shaped fixture 71: protrusion for assembly 72: Jiana 73 and 74: caulking projection 80: push button 81: operating central projection 82: elastic pawl portion 90: base 92: cover 93: opening 94: annular step

Claims (5)

An operation input device that detects a change in a magnetic field based on a rotation operation of the operation dial with a magnetic detection sensor mounted on the printed circuit board by rotating the operation dial supported above the printed circuit board,
The printed circuit board is mounted on a base having an annular rib projecting on the outer peripheral edge of the upper surface, and the base is covered with an elastic waterproof material having a planar shape covering the base, and is projected on the lower surface of the ring-shaped fixture. The operation input device is characterized in that the operation dial is rotatably prevented by being press-fitted into the waterproof press-fitting hole provided in the elastic waterproof material and the caulking projection is fixed to the base.   The operation input device according to claim 1, wherein an annular groove portion that fits into the annular rib of the base is formed in a thick portion provided at an outer peripheral edge portion of the elastic waterproof material.   The operation according to claim 1 or 2, wherein a caulking hole is provided in an extruding part provided in an extruding process on the base, and an outer peripheral edge of the caulking hole is compressed from above and below with the protruding part and a ring-shaped fixture. Input device.   While the operation input device according to any one of claims 1 to 3 is attached to the base of the housing, the thick portion of the elastic waterproof material is compressed by the back surface of the cover of the housing and the annular rib of the base. An electronic device characterized by holding.   An electronic apparatus comprising the operation input device according to any one of claims 1 to 3 in front of a back surface of a cover of a housing.

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