KR20050018618A - Input device, and electronic equipment and cellular phone using the same - Google Patents

Abstract

PURPOSE: An input device, an electronic device and a cellular phone using the same are provided to reduce power consumption by supplying power to different magnetic field detector when a manipulation dial is operated. CONSTITUTION: An input device includes a cylindrical permanent magnet(51), a manipulation dial(52), a click spring(54), two magnetic field detectors(34,35), and a control circuit(36). The cylindrical permanent magnet is rotatably supported at the center thereof. The manipulation dial is implemented on the same axis as the permanent magnet and is rotated with the permanent magnet. The click spring generates a click-feeling according to alternating N and S poles. The magnetic field detectors detect change in a magnetic field and are implemented to generate a phase difference in the detected result. The control circuit detects the rotational direction of the manipulation dial based on the detected signal and detects the rotational amount based on the signal detected at one of the magnetic field detectors.

Description

INPUT DEVICE, AND ELECTRONIC EQUIPMENT AND CELLULAR PHONE USING THE SAME}

Technical field

TECHNICAL FIELD This invention relates to the input device arrange | positioned at the input operation surface of electronic devices, such as a personal computer, and a mobile telephone, especially an input device which detects the rotation operation in an input operation surface, for example.

Background technology

BACKGROUND ART Conventionally, as an input device provided in a mobile phone or the like, there is provided a function of scrolling and selecting and determining various kinds of information projected on a display (monitor) by rotating an operation dial.

For example, if you scroll a character display projected on the screen of the indicator by one line with one click feeling, if you try to scroll ten lines, you need to rotate the control dial until you get ten click feelings. have.

[Patent Document 1]

Japanese Patent Application Laid-Open No. 2002-150895

However, while the mobile telephone is required to be further downsized, high functionality is being advanced. For this reason, in the above-described input device, it is necessary to be able to scroll various kinds of information projected on the display more quickly. In other words, rather than scrolling five rows by obtaining five click feelings in one limited rotation operation (for example, a rotation operation angle of 60 degrees), ten rows of feelings can be scrolled by obtaining ten click feelings in one limited rotation operation. It is desired to be able. In general, when attempting to achieve high resolution as described above without increasing the size of the apparatus, for example, it is necessary to reduce the pitch of the latch groove that generates the click feeling. In particular, when the rotation direction and the rotational amount are to be detected based on two output signals obtained by the rotation operation of one operation dial, the latch grooves become extremely small (see FIG. 11 herein). As a result, high component precision and assembly precision are required for the internal components, and there is a problem that manufacturing and assembly are not easy.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a compact input device that is easy to manufacture and assemble without requiring high component precision and assembly precision.

An input device according to the present invention includes a permanent magnet having a circular cross section in which N poles and S poles are alternately arranged and integrated, and rotatably supported about an axis;

An operation dial disposed on the same shaft center as the permanent magnet and integrally rotating;

Click feeling generating means for generating a click feeling to the operation dial in response to changes in the N pole and the S pole of the permanent magnet;

Two magnetic detection means arranged to detect a change in the magnetic field accompanying the rotation of the permanent magnet, and to generate a phase difference in the detection result;

A control circuit that detects the rotational direction of the operation dial based on the signals detected by the two magnetic detection means, and detects the amount of rotation of the operation dial based on the signal detected by either of the magnetic detection means. It is set as the structure which consists of.

According to the present invention, the rotation direction is detected based on the signal detected by the two magnetic detection means, but the rotation amount is detected by any one of the magnetic detection means. For this reason, for example, even when a latch groove is formed in the operation dial for interlocking with the click feeling, the latch groove may be formed so as to correspond to a signal output from one magnetic detection means. As a result, high component precision is not required for the formation of the latch groove, and high assembly precision is not required for the click feel generating means.

In the embodiment of the present invention, the control circuit may be configured to turn on the power supply circuit for driving the other magnetic detection means when one of the two magnetic detection means detects a change in the magnetic field. .

According to this embodiment, when one magnetic detection means detects a change in magnetism, that is, when the operation dial is operated, power is supplied to the other magnetic detection means, so that an input device with low energy consumption can be obtained. Can be.

According to another embodiment of the present invention, in an electronic device having a control unit and a display unit, the input device according to claim 1 or 2 is provided so as to be operable from the outside, and the control unit is based on the amount of rotation of the operation dial. The electronic device may be characterized by performing display control of the display unit. Moreover, as another embodiment of this invention, in the mobile telephone provided with a control part and a display part, the input device of Claim 1 or 2 is provided so that operation is possible externally, and it is based on the rotation amount of the operation dial. The mobile phone may be characterized in that the control unit performs display control of the display unit.

According to the above-described embodiment, there is an effect that an electronic device which does not require high component precision in the formation of the latch groove and does not require high assembly precision in the click feel generating means, or an electronic device having low energy consumption can be obtained. have.

In addition, there is an effect that a mobile phone that does not require high component precision in the formation of the latch groove and does not require high assembly precision in the click feel generating means or a mobile phone with low energy consumption can be obtained.

Best Mode for Carrying Out the Invention

Embodiments of the input device according to the present invention will be described with reference to the accompanying drawings in FIGS. 1 to 12. The input device which concerns on this embodiment is a case where it applies to the input device 14 of the mobile telephone 11, as shown in FIG.

That is, the mobile telephone 11 incorporating the control unit 10 arranges the indicator (monitor) 13, the input device 14, and the ten key 15 on the upper surface of the case body 12. . In addition, a speaker 16 and a microphone 17 are provided at the upper and lower ends of the case body 12, respectively. Moreover, the antenna 19 connected to the said control part 10 via the communication part 18 is attached to the back surface of the said case main body 12 so that extraction is possible. The input device 14 is operable from the outside via the operation dials 52 and the operation units 61 and 62 of the integrated operation button 60 which will be described later, and is attached to the case main body 12. The user can operate the thumbwheel 15 and the operation dial 52 and the integrated operation button 60 of the ten key 15 and the input device 14 with a thumb while supporting the mobile telephone 11 with one hand.

The control unit 10 controls the entire cellular phone 11 and displays the display unit 13 on the basis of a signal relating to a rotation direction and a rotation amount input from the operation dial 52 described later of the input device 14. To control the screen display. For example, the control unit 10 controls the scrolling direction of the screen display such as the mail sentence, the scrolling amount, or the movement of the highlight display of the menu selection display or the like. A display control IC dedicated to display control may be provided between the control unit 10 and the display 13, and the display 13 may be controlled by the display control IC.

The display unit 13 is composed of a liquid crystal display and the like, and displays an operation menu, transmission / reception mail, various data contents, etc. by the instruction of the control unit 10.

The input device 14 has a switch function for detecting a rotation operation input from the upper surface of the case body 12, a switch function for detecting a pressing operation at the rotational position thereof, and an independent pressing operation at the left and right positions. It is equipped with four types of complex input functions of the switch functions which are respectively detected. Therefore, the said input device 14 detects the rotation direction, the rotation amount, and the reduction operation | movement of the operation dial 52 mentioned later by user's input operation, or the operation part 61 of the integrated operation button 60 mentioned later. And the input operation of 62, and transmit the detection result to the control unit 10.

In addition, the user inputs telephone number and other input information of text data to the control unit 10 through the ten key 15. In addition, a ring tone or a voice is output from the speaker 16, while a voice of a user is input from the microphone 17 to the controller 10. The antenna 19 that transmits and receives radio waves transmits and receives communication data with the control unit 10 via the communication unit 18.

In particular, as shown in FIGS. 3 to 8, the input device 14 sequentially processes the base plate 20, the flexible substrate 30, the operation dial unit 40, and the integrated operation button 60. It is laminated and integrated.

The base plate 20 is a substantially rectangular plate-like body, and as shown in FIG. 5, the first standing pieces 21 and 22 are cut out at roughly right angles in the center of two opposite sides, respectively, The second standing pieces 23 and 24 are cut out at roughly right angles, respectively, in the center of two remaining opposite sides. The first standing pieces 21 and 22 are provided with first storage holes 21a and 22a for supporting the operation dial unit 40 described later, respectively. On the other hand, the second standing pieces 23 and 24 are provided with second storage holes 23a and 24a for holding the integrated operation button 60 described later, respectively.

The flexible substrate 30 is provided with a locking hole 30a at a position corresponding to the second rising piece 23 of the base plate 20, and the second rising piece ( The notch part 30b which fits into 24 is provided. Moreover, while the 1st push-down detection switch 31 is arrange | positioned in the vicinity of the said locking hole 30a, the 2nd, 3rd push-down detection switches 32 and 33 are arrange | positioned at the said short side edge part, respectively. Moreover, between the 1st, 2nd pressure reduction detection switches 31 and 32, the 1st and 2nd hall elements 34 and 35 for rotation information which detect the magnetic flux of the permanent magnet 51 mentioned later are mounted. . On the other hand, the control IC 36 is mounted between the first and third pressure reducing detection switches 31 and 33. Moreover, in order to detect the rotation direction of the operation dial 52 mentioned later, and to ensure a high resolution function, the 1st, 2nd hall elements 34 and 35 are mutually shifted by a predetermined amount, and are positioned. .

Therefore, one second standing piece 23 of the base plate 20 is inserted into the locking hole 30a of the flexible substrate 30 and the other second standing piece 24 is inserted into the flexible substrate. By engaging with the notch part 30b of 30, the said flexible substrate 30 is positioned in the predetermined position of the base board 20. As shown in FIG.

The operation dial unit 40 passes through the shaft hole 41a of the flat outline U-shaped frame 41 and the shaft hole 47a of the frame fixing plate 47 assembled to the frame 41. Both ends of (50) are respectively inserted and crossed rotatably. The cylindrical permanent magnet 51 and the tire-shaped operation dial 52 are inserted through the passage shaft 50. Moreover, the touch spring 54 for obtaining an operation touch is arrange | positioned between the said operation dial 52 and the said edge fixing plate 47. As shown in FIG.

That is, as shown in FIG. 5 and FIG. 8, the frame 41 projects the engagement shafts 42a and 43a on the same axis center, respectively, at the front end faces of the two arm portions 42 and 43. As shown in FIG. In particular, one engagement shaft 43a (FIG. 8) is longer than the other engagement shaft 42a, penetrates the edge fixing plate 47, and further, the first standing piece 22 of the base plate 20. It is possible to insert into the first storage hole 22a provided in the). Moreover, the said engaging body 41 is the engagement shaft 43b which can be inserted in the 1st sheet | seat ball 21a provided in the said 1st standing piece 21 in the outer surface which opposes the said edge fixing plate 47 (FIG. 8) protrudes on the same shaft center as the engagement shaft 43a. The frame 41 protrudes the operation protrusion 42b in the center of the lower surface of the one-side arm 42.

The permanent magnet 51 is a magnet that is easy to be formed into a shape suitable for assembling, and examples thereof include a bond magnet which can be formed into any shape by mixing magnetic powder and resin. As shown in Fig. 6A, the permanent magnets 51 are arranged so as to alternately divide the N pole and the S pole into 12 equal parts (or 6 equal parts) along the outer circumferential surface thereof. For this reason, magnetic fields (μ) are generated between the polarities along the outer circumferential surface of the permanent magnets (51), and the first and second holes are mounted on the flexible substrate (30) with changes in the strength and weakness of the magnetic fields (μ). The elements 34 and 35 detect noncontact.

In addition, as shown in Fig. 6B, the permanent magnet 51 alternately divides the N poles and the S poles into 12 equal parts in the annular direction in accordance with the annular cross section. Or disc-shaped) arranged in six equal parts). With such an arrangement, by generating the strength change and the number of occurrences of the magnetic field (μ) between the dipoles on the annular cross section, the axial length of the permanent magnet 51 can be saved and can be downsized. There is this.

As shown in Fig. 7, the operation dial 52 is formed on the outer circumferential surface of the non-slip uneven surface alternately at a predetermined pitch, and the small diameter shaft portion for obtaining the operation feeling (click feeling) on one side thereof. The inner part 53 is integrally molded on the same shaft center. A radial latch groove 53a is provided on the tip end surface of the small-diameter shaft portion 53 to elastically engage the touch spring 54 at a predetermined angle.

As shown in FIG. 8, the said touch spring 54 is bent in the shape of an inverted V-shaped leaf spring of a substantially rectangular frame shape, and the protrusion 54a is provided in the center of the one side edge part by protrusion processing. . The protrusion 54a intermittently elastically engages the radial latch groove 53a of the operation dial 52 to give an operator a feeling of touch (click feeling).

And as shown in FIG. 8, the said operation dial unit 40 uses the pair of engagement shafts 43b and 43a of the frame 41 as the first standing pieces 21 and 22 of the base plate 20. As shown in FIG. It inserts into the 1st storage hole 21a, 22a which respectively provided in it, and it supports so that rotation is possible. By supporting in this way, the operation protrusion part 42b formed in the center of the lower surface of the one-side arm part 42 of the said rim 41 is located directly above the 1st push down detection switch 31. As shown in FIG.

As shown in Figs. 5 and 8, the integrated operation button 60 is formed by connecting both side edges of the pair of curved operation portions 61 and 62 to the connecting portions 63 and 64. 40) has a planar shape that can be fitted. On the lower end surface of the said operation part 61 and 62 on the same direction side, the operation projection parts 61a and 62a protrude, respectively. Moreover, on the outer side surface which the said connection parts 63 and 64 oppose, the engagement shaft 63a which engages with the 2nd bearing holes 23a and 24a provided in the 2nd standing piece 23 and 24 of the said base board 20. Moreover, as shown in FIG. , 64a) are projected on the same shaft center, respectively.

Therefore, the engagement shafts 63a and 64a of the integrated operation button 60 are inserted into the second bearing holes 23a and 24a provided in the second standing pieces 23 and 24 of the base plate 20, respectively. Thereby, while the said operation button 60 is rotatably supported, the operation projection parts 61a and 62a are positioned directly above the 2nd and 3rd pressure reduction detection switches 32 and 33, respectively.

Next, the connection of the said 1st, 2nd hall elements 34 and 35 and the control IC 36 is demonstrated.

As shown in FIG. 9, both the said 1st, 2nd hall elements 34 and 35 are connected to the control IC 36. As shown in FIG. In particular, the first Hall element 34 is connected to output from the first output circuit 71 via the first channel 70 of the control IC 36. On the other hand, the second hall element 35 is connected to output from the second output circuit 73 via the second channel 72. Moreover, while the timing circuit 74 is connected to the said 1st channel 70 and the 1st output circuit 71, respectively, the 2nd channel 72 and the 2nd output circuit 73 also have a timing circuit ( 74). The timing circuit 74 is also connected to a control system circuit (OSC) 75.

The timing circuit 74 controls the operation timing of the first channel 70, the first output circuit 71, the second channel 72, and the second output circuit 73.

That is, the first channel 70 supplies a driving voltage between the first-INP and the first-INN of the first Hall element 34 at the timing of sampling the magnetism of the permanent magnet 51. The first Hall element 34 supplied with the drive voltage outputs a Hall voltage in response to magnetism between the first-OUTP and the first-OUTN. Similarly, the second channel 72 supplies a driving voltage between the second 2-INP and the second 2-INN of the second Hall element 35 at the timing of self sampling. The second Hall element 35 supplied with the driving voltage outputs a Hall voltage in response to magnetism between the second 2-OUTP and the second OUTOUT. When the driving voltage is not supplied, the first hall element 34 and the second hall element 35 do not output the hall voltage. The timing circuit 74 drives the first channel 70 and the first output circuit 71 only when sampling from the first hall element 34, and does not drive anything else. Moreover, the timing circuit 74 drives the 2nd channel 72 and the 2nd output circuit 73 only when sampling with the 2nd hall element 35, and does not drive other than that case.

A control method will be described based on the flowchart of FIG. 10.

First, it starts and samples the output signal from the first channel 70 in step S1. Then, it is determined whether or not there is a change in step S2. If there is no change, the process returns to step S1. By repeating steps S1 to S2 to S1 at? Msec intervals, the output signal from the first channel 70 is sampled at? Msec periods. If there is a change in step S2, the flow proceeds to step S3. In step S3, the timer (not shown) is started and it progresses to step S4. In step S4, the output signal is sampled from the second channel 72, the output signal sampled from the first and second channels 70 and 72 is output in step S5, and the flow proceeds to step S6. In step S6, after βmsec, the output signal is sampled from the first channel 70, and it is determined whether there is a change in step S7. If there is a change, the timer is reset in step S8, and the timer is restarted. If there is no change, the flow proceeds directly to Step S9. In step S9, it is determined whether or not the accumulated count time of the timer has elapsed by [gamma] msec. By repeating steps S4 to S5 to S7 (S8) to S9 to S4 at intervals of msec, the output signals from the first channel 70 and the second channel 72 are sampled at the period of msec. If the accumulated count time of the timer has elapsed in mSsec in step S9, it returns to step S1 and the same process is performed after that.

The operation method of the input device which consists of above-mentioned structure is demonstrated.

When the user turns this in a state of being in light contact with the upper surface of the operation dial 52, the permanent magnet 51 integral with the operation dial 52 also rotates in the same direction. For this reason, the 1st and 2nd hall elements 34 and 35 detect the intensity | strength change and the generation number of the magnetic field (μ) which alternately appear from the N pole and S pole of the permanent magnet 51, and the control IC 36 It converts into an electric signal of a square wave (FIG. 11), and processes as follows to detect the rotation direction and rotation amount of the operation dial 52. FIG.

For example, the projection 54a of the latching spring 54, which has fallen for a period of time during the change from the N pole to the S pole, that is, falls into the latching groove 53a, is dropped again by the next latching groove 53a. The time to enter is 1 cycle. On the other hand, the detection of the 1st Hall element 34 and the 2nd Hall element 35 is arrange | positioned in the flexible substrate 30 so that it may shift | deviate by 1/4 period. When the operation dial 52 is rotated, as shown in the time chart shown in FIG. 11, first, a square wave corresponding to the output of the first hall element 34 is first output, and then shifted by a quarter of a second, and the second is shifted. The square wave corresponding to the output of the hall element 35 is output, and control is performed based on the flowchart mentioned above.

That is, in step S1, the output signal from the first channel 70 is sampled, and then in step S2, it is determined whether there is a change in the output. At step S1 and step S2, only the first channel 70 is operated, and the second channel 72 and the timer (not shown) do not operate. If it is determined in step S2 that there is no change, the process returns to step S1, and the sampling is repeated in the [alpha] msec period until there is a change. If there is a change in step S2, the flow proceeds to step S3. In step S3, the timer (not shown) is started and it progresses to step S4. In step S4, the second channel 72 samples the output signal obtained by operating the second hall element 35, and outputs the result of sampling from the first and second channels 70 and 72 in step S5. Then, by analyzing the output order of the first and second Hall elements 34 and 35, it is determined which direction of rotation the forward and reverse direction of the operation dial 52 is.

Next, in step S6, the output signal from the first hall element 34 is sampled after β (<?) Msec, and in step S7, it is determined whether or not the sampling result of the first channel 70 has changed. . If there is a change, the flow proceeds to step S8, the timer (not shown) is reset, the timer is restarted, and the flow proceeds to step S9. If it is determined in step S7 that there is no change, the flow proceeds to step S9 without resetting the timer. In step S9, it is determined whether or not the cumulative count time of the timer is exceeding [gamma] msec. If it is not exceeded, the flow returns to step S4. By repeating steps S4 to S5 to S6 (S8) to S9 to S4 at βmsec intervals, sampling of the output signals from the first channel 70 and the second channel 72 is performed at the βmsec period, and sampling is performed. Print one result. The amount of rotation of the operation dial 52 is detected based on the signal output of the first channel 70. The sampling period β (<α) msec is a time shorter than a quarter cycle even if it is long, based on the maximum speed when the user rotates the operation dial 52 at the earliest.

If the accumulated count time of the timer in step S9 exceeds γ msec, the flow returns to step S1. If the output signal of the first hall element 34 does not change during the accumulated count time γ msec, it means that the operation dial 52 is not operated. Therefore, in that case, it returns to step S1 and starts again from the sampling process of only the 1st channel of (alpha) msec period.

Then, by performing the same process, the rotation direction and the rotation amount of the operation dial 52 are detected, the detection result is output to the display 13 of the cellular phone, and reflected as a scroll of the highlight display. For this reason, what is necessary is just to operate the input device 14 according to the display of the indicator 13, and to turn on the 1st, 2nd, 3rd pressure reduction detection switches 31, 32, 33 suitably.

In addition, the above-mentioned determination of the rotation direction and detection of the rotation amount may be performed by the control IC 36, or may be performed outside the control IC 36 based on the output signal of the control IC 36. For example, it may be performed by the control unit 10 of the mobile phone 11. That is, whether the determination of the rotation direction and the calculation of the rotation amount (or rotation speed) are performed in the unit of the input device 14 or outside the unit of the input device 14 does not limit the scope of the present invention. .

According to this embodiment, when detecting the rotation amount of the operation dial 52, it does not detect a rotation amount based on the output of both the 1st hall element 34 and the 2nd hall element 35, Only the output of the one-hole element 34 is used as a reference. For this reason, for example, if one click is to be obtained for every one cycle, as shown in Fig. 11, the width and pitch of the latch groove are low among the square waves based on the output signal of the first Hall element 34. It may be formed so as to correspond only to the portion. As a result, according to the present embodiment, there is no need for a latch groove with high dimensional accuracy, and the manufacture of internal components is simplified, which has the advantage of providing high productivity and a compact input device at low cost.

In this embodiment, since the 1st Hall element 34 and the 2nd Hall element 35 are intermittently driven, power consumption can be saved.

In addition, when the output of the first Hall element 34 is changed only when the second Hall element 35 is driven and sampled, the power consumption can be further reduced. For example, based on the flowchart shown in FIG. 10, when sampling from the first channel 70 in step S1, the timing circuit 74 may include the first channel 70 and the first output circuit 71. ) And the first Hall element 34 to drive the output. And if there is no change in the output of the 1st hall element 34 in step S2, it will return to step S1 and will sample from the 1st channel 70 by (alpha) msec period. Subsequently, when there is a change in the output of the first hall element 34, a timer (not shown) is started in step S3, and the timing circuit 74 starts the second channel 72 and the second output circuit in step S4. Reference numeral 73 is driven to drive the second Hall element 35 to obtain the output of the second channel 72 (see Fig. 12). After that, sampling is performed from the first channel 70 and the second channel 72 at a period of βmsec, and the rotation operation of the operation dial 52 is performed unless the output signal of the first hall element 34 changes during γmsec. The power consumption can be again saved by returning to the sampling process of only the first channel 70 in the? Msec period, which is regarded as stopped. > β msec).

In addition, in FIG. 11, for convenience of description, the 1st hall element 34 and the 2nd hall element 35 are shown so that it always outputs High and Low. However, in the circuit according to the invention described in claim 2, the signal is output only in the sampling period. For this reason, if strictly shown to coincide with the invention according to claim 2, the "output of the first hall element" and the "output of the second hall element" are respectively shown by dotted lines, and are shown as black dots only in the case of the sampling period. Lose.

The above-described magnetic detection means may be the Hall elements 34 and 35 described above, or may be a Hall IC incorporating an output control circuit. In addition, two Hall elements IC may be packaged as one, or two Hall elements IC and a control IC may be packaged as one.

In addition, in the above-described embodiment, not only one click is obtained for every one cycle but also one click for every half cycle. This configuration has the advantage that the manufacture of the permanent magnet 51 becomes easy.

In addition, the number of grooves of the latch groove is left as it is, for example, the density of the N pole / S pole is doubled, that is, the number of sets of the N pole / S pole is doubled per one column (360 degrees) of the circumferential magnet. Also good. Thereby, it becomes the rotation amount similar to embodiment mentioned above in two cycles (for two sets of N pole / S pole), and a 1-click feeling can be obtained. In this case, if the number of magnetic changes is removed from the control after the detection, and the scroll amount in the display is set to the scroll amount of the above-mentioned one-click portion in two cycles, the scroll amount is the same as that in the case of obtaining one-click feeling in one cycle. The operator does not feel discomfort.

According to the present invention, the rotation direction is detected based on the signal detected by the two magnetic detection means, but the rotation amount is detected by any one of the magnetic detection means. For this reason, for example, even when a latch groove is formed in the operation dial for interlocking with the click feeling, the latch groove may be formed so as to correspond to a signal output from one magnetic detection means. As a result, high component precision is not required for the formation of the latch groove, and high assembly precision is not required for the click feel generating means.

According to the present invention, when one magnetic detecting means detects a change in magnetism, that is, when the operation dial is operated, power is supplied to the other magnetic detecting means, so that an input device with low energy consumption can be obtained. have.

In addition, there is an effect that an electronic device that does not require high component precision in the formation of the latch groove and does not require high assembly precision in the click feel generating means, or an electronic device with low energy consumption can be obtained.

In addition, there is an effect that a mobile phone that does not require high component precision in the formation of the latch groove and does not require high assembly precision in the click feel generating means or a mobile phone with low energy consumption can be obtained.

The input device according to the present invention can be applied not only to mobile phones but also to electronic devices such as personal computers.

BRIEF DESCRIPTION OF THE DRAWINGS The front view of the mobile telephone which assembled the input device which concerns on this invention.

2 is a block diagram of the mobile phone shown in FIG.

3 is a perspective view of a single input device shown in FIG. 1;

4 is a perspective view illustrating a state in which an integrated operation button is separated from the input device shown in FIG. 3.

5 is an exploded perspective view of the input device shown in FIG.

Fig. 6A is a perspective view of the permanent magnet shown in Fig. 5, and Fig. 6B is a perspective view showing a permanent magnet of another modification.

FIG. 7 is an enlarged exploded perspective view of the input device shown in FIG. 3. FIG.

FIG. 8 is an exploded perspective view when viewed from another angle of the input device shown in FIG. 3. FIG.

9 is a wiring diagram of an input device according to the present invention;

10 is a flow chart for explaining the operation of the present invention.

11 is a time chart for explaining the operation of the present invention and the conventional example.

12 is a time chart for explaining the operation of the present invention.

♠ Explanation of the symbols for the main parts of the drawings.

10: control unit 11: mobile phone

12: Case body 13: Indicator

14: Input device 15: Tenkey

16: Speaker 17: Microphone

18: Communication department 19: Antenna

20: base board 30: flexible board

31, 32, 33: 1st, 2nd, 3rd pressure reduction detection switch

34, 35: Hall element 36: Control IC

40: Operation dial unit 41: Border body

42, 43: arm part 42b: operation protrusion part

50: Passing shaft 51: Permanent magnet

52: Operation dial 53: Small diameter shaft part

53a: Radial latch groove 54: Texture spring

60: Integrated operation button 61a, 62a: Operation protrusion part

Claims (4)

Permanent magnets having a circular cross section in which the N poles and the S poles are alternately arranged and integrated, and rotatably supported around an axis; An operation dial disposed on the same shaft center as the permanent magnet and integrally rotating; Click feeling generating means for generating a click feeling to the operation dial in response to changes in the N pole and the S pole of the permanent magnet; Two magnetic detection means arranged to detect a change in the magnetic field accompanying the rotation of the permanent magnet and to generate a phase difference in the detection result; A control circuit that detects the rotational direction of the operation dial based on the signals detected by the two magnetic detection means, and detects the amount of rotation of the operation dial based on the signal detected by either of the magnetic detection means. Input device, characterized in that consisting of. The method of claim 1, And a control circuit controls the power supply circuit for driving the other magnetic detection means to be turned on when one of the two magnetic detection means detects a change in the magnetic field. An electronic device comprising a control unit and a display unit, An electronic device according to claim 1 or 2, wherein the input device is provided so as to be operable externally, and the control unit performs display control of the display unit based on the amount of rotation of the operation dial. A mobile phone having a control unit and a display unit, The portable telephone according to claim 1 or 2, wherein the input device is provided so as to be operable from the outside, and the control unit performs display control of the display unit based on the amount of rotation of the operation dial.