KR20110102812A - Switch unit, manipulating switch and portable electronic device - Google Patents

Abstract

An object of the present invention is to be able to manufacture a dome switch unit 58 capable of detecting an input by a smaller force than inverting the two-stage dome switch 24 with a low defective rate, the dome switch unit 58 It is to provide a mobile terminal (1) provided with) to improve the user's satisfaction.
The two-stage dome switch 24 has a supporting portion 24b for supporting two first contact portions 24c spaced apart from the first contact portion 61c, and the substrate 25 is formed of two first contact portions 24c. When both sides are in contact with each of the first contacts 61c, they are energized and switched on. If any one of the two first contacts 24c is spaced apart from the first contacts 61c, they are not energized, and are switched off. It is characterized in that the dome switch unit 58 is a configuration.

Description

Switch unit, operation switch and portable terminal {SWITCH UNIT, MANIPULATING SWITCH AND PORTABLE ELECTRONIC DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch unit, an operation switch, and a portable terminal provided with the switch unit, for example, used in a HMI unit (Human Machine Interface) such as a mobile phone, PDA (Personal Digital Assistants) or a digital camera.

Conventionally, various switches have been provided as switches for detecting an operation input. As such a switch, a dome type inversion spring (hereinafter referred to as a dome switch) has also been proposed (see Patent Document 1).

The two-stage switch unit described in Patent Document 1 has a rotation detecting mechanism for detecting rotation and a multidirectional input device for detecting multidirectional input, and the multidirectional input device under the rotation detecting mechanism has a top, bottom, left, right and a center. Detect five directions of determination. And a dome switch is used for this multidirectional input device.

The click plate 11 serving as the dome switch is attached to the double-sided tape 19 and disposed. As a result, the position of the dome switch is fixed, and the detection portion of the switch can be made thin and compact by using the dome switch.

Here, the above-mentioned dome switch is configured such that the apex of the dome-shaped portion is pressed down and the dome switch is inverted so that the dome switch comes into contact with a contact disposed opposite to the apex of the dome switch and is energized to be switched on. For this reason, it must be pressed by a certain pressure force until it detects a pressing operation. As the switch, it is also required to detect a smaller pressing force, but there is a problem that a reduction in the pressing force required for detection is limited in a structure that requires inversion.

In addition, since the above-described dome switch is fixed by attaching with double-sided tape, deviation occurs in the position and angle at the time of manufacture. And when it considers that it is a structure which can detect the press by a small force, there exists a problem that the influence of the positional and angle | variation of an angle at the time of manufacture becomes large, and the defective product rate rises.

However, the two-stage switch unit of the above-mentioned patent document 1 was not able to cope with this problem.

Japanese Patent Application Publication No. 2006-286353

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to enable a switch unit capable of detecting an input by a small force to be manufactured with a low defective rate than to invert a dome switch.

The present invention has a switch member having at least two first contacts and connected between both first contacts with a conductive material, and each of the first contacts having a first contact contacted / separated, and switched by the contact / spaced. And a switch unit having a circuit portion turned on / off, the switch member having a support portion for supporting the two first contact portions spaced apart from the first contact portion, wherein the circuit portion has both sides of the two first contact portions respectively. And a switch unit that is energized when the first contact is in contact with the switch, and is switched on when one of the two first contact portions is separated from the first contact. .

Thereby, the switch unit which can detect an input by a small force rather than inverting a dome switch can be manufactured with a low defective rate.

In the form of this invention, the said switch member is further provided with the 2nd contact part, the said 2nd contact part and the said 1st contact part are connected by the electrically conductive material, and the said circuit part is the agent which contacts / spaces the said 2nd contact part. Two contacts may be provided and the distance from the second contact portion to the second contact portion may be longer than the distance of the first contact portion from the first contact portion.

Thereby, the switch unit which can implement | achieve two steps of pressure reduction detection can be manufactured with a low defective rate.

In addition, in the form of this invention, the said switch member is a dome switch which has a dome shape, Comprising: The said 1st contact part can be provided in the outer peripheral part of the dome shape, and the said 2nd contact part can be provided in the dome-shaped vertex part.

Thus, when the pressing operation is made, first of all, the first contact of the first contact portion can be detected, and if the pressing is performed further, the second stage of detection of the second contact portion of the second contact can be detected. The configuration can be realized with one dome switch.

Moreover, as an aspect of this invention, the said switch member can be arrange | positioned in multiple numbers on the same plane, and the said circuit part can be provided with the said 1st contact part corresponding to the 1st contact part of each said switch member.

Thereby, the switch unit provided with the some switch member can be manufactured with a low defective rate. That is, in the case where a plurality of switch members is provided, if any one of the switch members is defective, the entirety of the switch unit becomes defective. However, by significantly reducing the defective rate of the switch member itself, the overall defectiveness of the switch unit can be greatly reduced. have.

Moreover, this invention can be set as the operation switch provided with the said switch unit and the operation body provided in the upper surface side of the said switch unit, and accepting a press operation of a user.

The said operation body can be comprised by a suitable operation body, such as the rotation reduction operation body which rotates and also accepts a reduction operation, or the reduction operation body which accepts a reduction operation without rotation.

According to the present invention, it is possible to provide an operation switch for detecting a user's operation at a low defective rate.

Moreover, this invention is provided with the said switch unit, the control means which performs a control operation according to the manpower detection signal which detected the operation input by the said switch unit, and the output means which outputs information according to the control signal of the said control means. One mobile terminal can be used.

The control means can be constituted by an apparatus capable of performing appropriate control processing such as a CPU.

The output means can be configured by an appropriate device for outputting, such as a display device for displaying an image.

The portable terminal can be configured by a suitable portable terminal such as a mobile phone, a personal digital assistant (PDA) or a digital camera.

According to the present invention, a portable terminal adopting a switch unit having a low defective rate can be provided.

Industrial Applicability According to the present invention, it is possible to manufacture a switch unit capable of detecting an input by a smaller force than inverting a dome switch with a low defective rate.

1 is a front view of a digital camera having an operation switch.
2 is an external perspective view of an operation switch;
3 is an exploded perspective view of the operation switch viewed from above;
4 is an exploded perspective view of the operation switch viewed from below;
5 is an explanatory diagram of a two-stage dome switch;
6 is an enlarged exploded perspective view of the adhesive cover film and the spacer;
7 is an explanatory diagram of an adhesive structure around a dome switch.
8 is a perspective cross-sectional view of the operation switch;
9 is a block diagram showing the configuration of a digital camera having an operation switch.
10 is an explanatory diagram showing a circuit configuration of a peripheral fixed contact portion.
11 is an explanatory diagram showing a positional relationship between a holder and a dome switch.
12 is a perspective view of an operation side unit and a detection side unit.
FIG. 13 is an explanatory diagram showing a shape and a circuit configuration of a peripheral fixed contact portion of the second embodiment; FIG.
14 is an explanatory diagram of an adhesive structure of an operation switch of a third embodiment;

An embodiment of the present invention will be described with the following drawings.

(First embodiment)

1 is a front view of a digital camera 1 having an operation switch 10. In the digital camera 1, a shutter start button 3 for photographing start is provided on the upper right side, and a camera lens is provided on the back side not shown.

The indicator 2 is provided in front of the digital camera 1, and the operation switch 10 is provided adjacent to the right side. This operation switch 10 is used for a switch for setting such as shooting conditions of the digital camera 1, a switch for selecting a stored picture, and the like. Above the operation switch 10, a menu button 4 for displaying a menu screen or the like on the display 2 is provided, and below the operation switch 10, a playback button 5 for displaying a photographed image is provided. It is.

Next, the structure of the operation switch 10 is demonstrated. 2 shows an external perspective view of the operation switch 10, FIG. 3 shows an exploded perspective view of the operation switch 10 from above, and FIG. 4 shows an exploded perspective view of the operation switch 10 seen from below. 5 shows an explanatory view of the two-stage dome switch 24, FIG. 6 shows an enlarged exploded perspective view of the adhesive cover film 22A and the spacer 22B, and FIG. An explanatory view of the bonding structure is shown, and FIG. 8 shows a perspective cross-sectional view of the operation switch 10.

As shown in FIG. 3, the operation switch 10 includes the rotary operation body 14, the encoder movable contact plate 15, the conductive pieces 16, 17, and 18, and the holder 19 from above. And the holder connecting plate 20, the indenter 21, the seat 22, the dome switches 23 and 24, the substrate 25, and the base 26.

The rotating operation body 14 is formed in the shape of a disk made of a synthetic resin material, the indenter insertion hole 27 penetrates through the disk-shaped central portion axial direction, and has an annular cap shape. On the upper surface of this rotating operation body 14, many non-slip projections 28 which extend thin and long in the radial direction are equally arrange | positioned. Moreover, the lower surface of the rotating operation body 14 is formed with the annular planar part, the annular recessed part 31 enclosed by the inner peripheral flange 29 and the outer peripheral flange 30 which protrude downward. On the inner surface of the annular recess 31, a plurality of arc-shaped band-shaped protrusions 32 are equally divided in the circumferential direction and protruded at regular intervals. Moreover, the several small shaft part 33 is equally protruded in the circumferential direction, and is provided in the inner peripheral side.

In addition, the outer circumferential surface of the inner circumferential flange 29 is provided with a concave groove 34 formed in a concave shape along the axial direction in equal parts in the circumferential direction. In addition, a rotation operation feeling uneven surface 35 is formed on the inner circumferential surface of the inner circumferential flange 29 corresponding to the indenter insertion hole 27. The uneven surface 35 is alternately formed with 12 uneven in the circumferential direction, and the uneven surface 35 is configured so as to match the phase signal of the encoder. In addition, a plurality of engaging projections 36 for connecting to the holder connecting plate 20 with the holder 19 therebetween are protruded and installed at the lower end of the inner circumferential flange 29. The rotary manipulator 14 provided on the holder connecting plate 20 with the holder 19 therebetween can freely rotate with respect to the holder 19.

An encoder movable contact plate 15 is fitted to the annular recess 31 formed on the inner surface of the rotary manipulator 14, and a holder connecting plate 20 is provided at the lower end of the inner circumferential flange 29. It is fitted and installed.

The encoder movable contact plate 15 is formed of an annular conductive metal plate of a size that can be fitted to the annular recess 31. In the planar circumferential direction of the encoder movable contact plate 15, for opening the encoder signal, approximately 37 opening portions 37 of the same shape that can be fitted in correspondence with the arc-shaped band-shaped protrusions 32 are opened at regular intervals. . Similarly, on the inner circumferential side of the opening 37, a shaft hole 38 having substantially the same shape as the shaft portion 33 is opened in correspondence with the shaft portion 33. This shaft hole 38 is fitted to the shaft portion 33. In addition, an inner circumferential convex portion 39 having substantially the same shape as the concave groove 34 is formed on the inner circumferential surface of the movable contact plate 15 for encoder. This inner circumferential convex portion 39 is fitted into the concave groove 34.

Thereby, the projection part 32 in which the opening part 37, the shaft hole 38, and the inner peripheral convex part 39 which were formed in the movable contact plate 15 for encoders are formed in the lower surface side of the rotating operation body 14 And the shaft shaft 33 and the concave groove 34 can be fitted and integrated so as to be press-fitted, respectively. And the encoder movable contact plate 15 is fitted and fixed to the lower surface side of the rotating operation body 14, as shown to the perspective cross section of FIG.

In this case, the planar part exposed to the lower surface of the movable contact plate 15 for encoders provided on the lower surface of the rotating operation body 14 becomes a sliding contact surface 40 (refer FIG. 4), and the upper contact 16a which is mentioned later here, 17a, 18a (see FIG. 3) make contact. For this reason, the sliding contact surface 40 is formed flat and uneven. That is, the sliding contact surface 40 of the movable contact plate 15 for encoders and the tip exposed surface of the projection part 32 which penetrate the opening part 37 are comprised so that it may become coplanar. Thereby, the stable contactability of the upper contact 16a, 17a, 18a mentioned later with respect to the sliding contact surface 40 is ensured.

The conductive pieces 16, 17, and 18 are formed of a conductive metal plate.

Among these, the common conductive piece 16 has three mounting holes 16c in the base end part, for example. The lower contactor is divided into two branches from the base end to the free end side, and one of them is an upper contact 16a which has an elastic force and is extended upward, and the other is a lower contact which is extended downward with an elastic force. (16b).

The 1st conductive piece 17 is provided for the 1st signal detection, and has the installation hole 17c in the base end like the said common conductive piece 16. As shown in FIG. One of the free end side divided into two branches from the base end is used as the upper contact 17a which has an elastic force and is extended upward, and the other is made as the lower contact 17b which has an elastic force and extended downward. .

The second conductive piece 18 is provided for detecting the second signal, and has a mounting hole 18c at the proximal end similarly to the common conductive piece 16. One of the free end side divided into two branches from the base end is used as the upper contact 18a which has an elastic force and is extended upward, and the other is made as the lower contact 18b which has an elastic force and extended downward. .

And the upper contact 16a, 17a, 18a of these electrically conductive pieces 16, 17, 18 has a fixed elastic force, and makes sliding contact with the sliding contact surface 40 mentioned above. In addition, the free end side of each electrically conductive piece 16, 17, 18 is extended in parallel with an inner peripheral side and an outer peripheral side, and is extended. These three conductive pieces 16, 17, 18 are hold | maintained by the holder 19 mentioned later, and are divided | segmented and arrange | positioned in the circumferential direction.

The outer circumferential side of the sliding contact surface 40 is always connected to the common contact side from which a constant signal is obtained, and the inner circumferential side is a pulse signal output side from which the intermittent signal is obtained. For this reason, the common conductive piece 16 becomes the common contact which the outer peripheral side becomes the upper contact 16a, and the upper contact 16a always conducts on the rotational track of the sliding contact surface 40. As shown in FIG. In the first conductive piece 17 and the second conductive piece 18, the inner circumferential side is the upper contact 17a, 18a, and the upper contact 17a, 18a is formed on the rotation trajectory of the sliding contact surface 40, respectively. It becomes an contactor which intermittently contacts the opening part 37, and outputs the pulse signal as a rotary encoder.

In addition, the conductive pieces 17 and 18 divide the free end side of the upper contact 17a and 18a into two again. Thereby, a stable elastic action is obtained by the divided contactor, and a smooth contact action is obtained when contacting a contact.

The holder 19 is formed by a flexible material such as POM resin (POM: polyoxymethylene), ABS resin (ABS: acrylonitrile butadiene styrene), or a mixed resin thereof. It is formed into an annular body of the size that can be closed planarly. This holder 19 is supported by the base 26 mentioned later by non-rotation. On the upper surface of the holder 19, three projections 42 for fitting and fixing the respective conductive pieces 16, 17 and 18 are divided into three parts in the circumferential direction and protruded. By fitting the mounting holes 16c, 17c, and 18c of each of the conductive pieces 16, 17, and 18 to these protrusions 42, the conductive pieces 16, 17, and 18 are formed on the upper surface of the holder 19. This is installed. Thereby, the upper contact 16a, 17a, 18a is provided in the state extended diagonally upward suitable for a contact. Further, an upper contact insertion hole 43, 44, 45 in the shape of an arc-shaped strip is opened on the upper surface of the holder 19 in three parts in the circumferential direction. The lower contacts 16b, 17b, and 18b are inserted downward through the lower contact insertion holes 43, 44, and 45, respectively. Thereby, the contacts 16b, 17b, 18b extend inclined downward suitable for a contact from the lower surface of the holder 19. As shown in FIG.

An annular flat portion 46 (see FIG. 3) is formed on the outer peripheral side of the upper surface of the holder 19. This annular flat portion 46 corresponds to the lower end of the outer circumferential flange 30 of the rotary operating body 14. Moreover, the annular edge part 47 which protrudes annularly is formed in the inner peripheral side of the annular planar part 46. As shown in FIG. This annular edge portion 47 corresponds to the inner circumferential surface of the outer circumferential flange 30 of the rotary operating body 14. Similarly, the holder inner circumference flange 48 protrudes from the inner peripheral side of the upper surface of the holder 19. The holder inner circumferential flange 48 is in contact with the outer circumferential surface of the inner circumferential flange 29 of the rotary operating body 14. Thereby, the rotation operation body 14 and the holder 19 respond | correspond stably.

In addition, the holder 19 planarly closes the opening surface of the annular recess 31 (see FIG. 4) formed between the lower surface of the rotary operating body 14 and the opposing surface of the upper surface of the holder 19. will be. Thereby, the above-mentioned upper contact 16a, 17a, 18a is elastically displaced to the sliding contact surface 40, and secures the closed space for stably contacting. This closed space prevents leakage of grease injected in order to maintain smooth contact with the annular recess 31. In addition, since the annular recess 31 is formed at an upper space position spaced apart from the lower base 26 side by a stroke stroke length or more, it is difficult for dust to penetrate from the pressure stroke, and thus has a high dustproof effect. It becomes a structure.

Further, four holding pieces 49 protruding outward are disposed every 90 degrees in the circumferential direction on the outer circumferential surface of the holder 19. The holding piece 49 is held by a base 26 to be described later. Further, four pressing projections 50 are provided on the lower surface of the holder 19 every 90 degrees in the circumferential direction. This pressing projection 50 is provided corresponding to the pressing position in four directions. Moreover, the annular accommodating recessed part 51 which accommodates and guides the holder connecting plate 20 mentioned later is formed in the inner peripheral side of the lower surface of the holder 19. As shown in FIG. In addition, the holder 19 is connected to the rotary manipulator 14 by a holder connecting plate 20 which will be described later while holding the conductive pieces 16, 17, and 18.

The holder connecting plate 20 (refer FIG. 4) is formed with the metal annular disk of the magnitude | size which can be accommodated in the annular accommodating recess 51 of the said holder 19. As shown in FIG. In the circumferential direction of the annular disc, a plurality of openings are formed at positions corresponding to the engaging projections 36 of the rotating operation body 14, and the engaging holes 52 are formed. The locking projection 36 of the rotary operation body 14 is fitted to this locking hole 52, and it latches. The rotation operation body 14, the holder 19, and the holder connecting plate 20 are connected in a laminated state in this order by the fitting engagement action of the holder connecting plate 20. FIG.

Moreover, the center part of the rotation operation body 14 is equipped with the touch mechanism which the rotation operation feeling becomes clear when an operator rotates the rotation operation body 14 with a fingertip. This feel mechanism is comprised from the indenter insertion hole 27 opened in the center part of the rotation operation body 14, and the indenter 21 mentioned later inserted into this.

The indenter 21 mentioned above is formed in the columnar shape by the synthetic resin material, and is penetrated by the indenter insertion hole 27 of the rotation operation body 14. As shown in FIG. The horizontal hole 53 is formed in the horizontal direction orthogonal to the cylindrical axial direction. The horizontal hole 53 is provided with a coil spring 54 for urging outward from the inside of the indenter 21 and a spherical body 55 which is provided opposite to both ends of the coil spring 54.

As a result, when the indenter 21 is inserted into the indenter insertion hole 27 of the rotary operation body 14 and installed, the spheres 55 located at both ends of the coil spring 54 are indented through hole ( Corresponding to the rotational operation feeling uneven surface 35 of 27, the sphere 55 imparts a constant pressing force against the rotational operation body 14. By the pressing force, when the rotary operating body 14 is rotated and rotated to the pressing operation position, the spherical body 55 moves back and forth along the uneven surface 35 each time, and the pressing force changes, so that the rotating operating body 14 Rotational resistance of is different. As a result, a clear click feeling is obtained. In this case, since the coil spring 54 and the sphere 55 can be interposed inside the horizontal hole 53, the arrangement space of the indenter 21 can be used effectively.

In addition, on both sides of the outer circumferential surface of the indenter 21, which are 90 degrees in the circumferential direction with respect to the penetrating position of the horizontal hole 53, the lower portion and the outer circumferential surface of the indenter 21 are raised and lowered guides 56. It is formed in the axial direction. This recessed part 56 is guided in the pushing direction by the indenter guide piece 74 of the base 26 mentioned later. Further, a pressing projection 57 protrudes in the center of the lower surface corresponding to the pressing position, and the pressing projection 57 pushes down the center switch S1 (see FIG. 3) of the dome switch unit 58 described later. .

Below the holder 19, a dome switch unit 58 is provided opposite the pressing stroke space 19B (see Fig. 8).

The dome switch unit 58 is formed by stacking the sheets 22, the dome switches 23 and 24, and the substrate 25 in this order. By attaching the lower substrate 25 to the upper surface of the base 26, the dome switch unit 58 is mounted on the upper surface of the base 26.

The board | substrate 25 is a printed wiring board, has the center fixed contact 60 (60a, 60b) in the center part, and has the peripheral fixed contact part 61 (61a, 61b, 61c) in the 4 surroundings. In addition, the common fixed contact 59a, the first fixed contact 59b, and the second fixed contact 59c are divided into three in the circumferential direction which does not overlap with the peripheral fixed contact portion 61.

Then, one stage dome switch 23 is mounted in correspondence with one central fixed contact 60, and two stage dome switch 24 is mounted in correspondence with four peripheral fixed contact portions 61, and the upper surface thereof is mounted. Is covered with the sheet 22 so as to prevent the dome switches 23 and 24 from moving at the correct positions of the substrate 25. Thereby, the center switch S1 provided corresponding to the down position where the indenter 21 is pressed down, and the four peripheral switches S2 provided corresponding to each down position at which the rotary operation body 14 are pressed down are comprised do.

The two-stage dome switch 24 is formed of an elastic metal member having conductivity, and has a shape in which four circular outer peripheries are cut out as shown in the front view of FIG. 5A. Two support parts 24b and two first contact parts 24c are provided, and a second contact part 24a is provided in the center. The two support parts 24b are symmetrically arranged opposite to each other with the second contact part 24a interposed therebetween. The two first contact portions 24c are disposed to be symmetrically opposed to each other with the second contact portion 24a interposed therebetween. These two support parts 24b and the two first contact parts 24c are alternately arranged by 90 degrees. The central curved portion where the second contact portion 24a of the two-stage dome switch 24 is provided serves as a reverse spring. For this reason, when the apex of the two-stage dome switch 24 is pressed down by a predetermined stroke, the curved part around it becomes an inversion spring, and the unevenness is changed, and the second contact portion 24a is below the second contact 61a (Fig. 3).

In detail, as shown to FIG. 5B which shows the AA cross section of FIG. 5A, in the 2nd stage dome switch 24, the 2nd contact part 24a of the center becomes a vertex, Two support portions 24b are positioned at the lower end and are in constant contact (grounding) with the support accommodating portion 61b (see FIG. 3). This support part 24b supports the 2nd stage dome switch 24 whole. The two-stage dome switch 24 is deformed when pressed by the elastic force of the metal member, which is a raw material, and returned when released.

And when it is a normal state which has not been pressed, as shown to FIG. 5C which shows the enlarged view of the BB part of FIG. 5B, the two 1st contact parts 24c are 1st. The contact 61c is spaced apart from some clearance (clearance). The clearance between the first contact portion 24c and the first contact 61c is preferably 1 mm or less, more preferably 0.1 mm or less, and in this embodiment, a clearance of 0.03 mm to 0.05 mm is set.

Moreover, the 2nd contact part 24a of the center is spaced apart from the 2nd contact 61a with sufficient clearance (clearance) in the normal state which has not been pressed. The clearance between the second second contact portion 24a and the second contact 61a in the center is wider than the clearance between the first contact portion 24c and the first contact 61c described above, and is preferably more than twice. It is more preferable to set it as 5 times or more.

The one-stage dome switch 23 shown in FIG. 3 is formed of an electrically conductive elastic metal member, the center contact portion 23a is at its peak, and the two common contact portions 23b are positioned at the lower end of the contact. It always contacts 60b. The contact part 23a is spaced apart from the contact 60a with sufficient clearance (clearance) in the normal state which has not been pressed operation.

As shown in FIG. 4, the sheet | seat 22 is comprised from the adhesive cover film 22A and the spacer 22B. 6 is an enlarged exploded perspective view of the adhesive cover film 22A, the spacer 22B, the first stage dome switch 23 and the two stage dome switch 24.

22 A of adhesive cover films are formed in the 2-layer structure of the cover film layer 22A1 and the adhesive layer 22A2.

The cover film layer 22A1 is formed of PET film. This cover film layer 22A1 is a sheet | seat for which connection holes, such as the retreat ports 64A and 66A, are formed and coat | covers the other part as a whole.

The adhesive layer 22A2 is formed of the double layer tape or the full layer coated by the printing technique on the cover film layer 22A1. This adhesive layer 22A2 is formed in the peripheral sheet portion 201 in which connection holes such as the retreating ports 64A and 66A are formed, and a displacement improving hole 203 is formed. This displacement improvement hole 203 is formed in the opposing position of each 1st contact part 24c of the two stage dome switch 24, respectively. The displacement improvement hole 203 is a substantially D-shaped shape which consists of a circular arc and a straight line, and is arrange | positioned in parallel so that a straight line part may be inward and an arc part may be outward.

Moreover, the contact bonding part 202 of the adhesive layer 22A2 is provided between two displacement improvement holes 203. The contact bonding portion 202 has a shape in which a rectangular plate is curved in the thickness direction and passes through the center of the peripheral switch S2 (the opposite position of the apex of the two-stage dome switch 24), which becomes approximately circular, and the peripheral switch S2. It is formed in the state which extends from the outer periphery one end to the other end. For this reason, the displacement improvement hole 203 is located in the both sides of the contact bonding part 202 of the peripheral switch S2.

By this configuration, both ends where the contact bonding portion 202 is connected to the peripheral sheet portion 201 become opposing positions of the supporting portion 24b of the two-stage dome switch 24. In addition, each displacement improvement hole 203 located on both sides of the contact bonding part 202 becomes an opposing position of the 1st contact part 24c of the two stage dome switch 24. As shown in FIG.

The spacer 22B is formed in the peripheral sheet portion 251 with connection holes such as the retreating ports 64B and 66B, the first stage dome switch hole 252 and the second stage dome switch hole 253.

The first stage dome switch hole 252 is slightly larger than the first stage dome switch 23. The two-stage dome switch hole 253 has a shape slightly larger than the two-stage dome switch 24.

The four two-stage dome switch holes 253 are in pairs of two, and each pair is communicated by the communication holes 261. The first stage dome switch hole 252 and the communication hole 261 communicate with each other by the communication hole 262.

The communication holes 261 and 262 generate a path (air path) through which air flows when the switch is pressed, so that the first step dome switch hole 252 and the second step dome switch hole 253 can be smoothly pressed. You can run

In the dome switch unit 58 of the operation switch 10 configured as described above, the adhesive layer 22A2 is spacerd over the entire circumference of the peripheral switch S2 as shown by hatching in the plan view of FIG. 7A. At the same time as the 22B, it is bonded from the support portion 24b of the two-stage dome switch 24 to the center.

Since the displacement improvement hole 203 is formed in the opposing position of the 1st contact part 24c of the two-stage dome switch 24, the contact bonding layer 22A2 does not adhere to the 1st contact part 24c. Thereby, the 1st contact part 24c can operate freely, and the detection of the two-stage pressing operation by the two-stage dome switch 24 can be performed with high precision.

As shown in the DD arrow EE enlarged cross-sectional view of FIG. 7B, the two-stage dome switch 24 is free to operate because the first contact portion 24c is not adhered by the displacement improving hole 203. Therefore, the small displacement can be accurately executed to detect the reduction, and can be easily returned even when the reduction is released.

Since the periphery of the two-stage dome switch 24 in the peripheral switch S2 is covered by the cover film layer 22A1 and bonded by the peripheral sheet portion 201 of the adhesive layer 22A2, the dustproof function is provided. Can be exercised. That is, the two-stage dome switch 24 is in the sealed state in which the spacer 22B exists in the circumference | surroundings, and the upper and lower sides are sandwiched between the cover film layer 22A1 and the board | substrate 25. As shown in FIG. And since the upper surface of the board | substrate 25 and the lower surface of the spacer 22B are fully adhere | attached, dust does not invade from a lower surface. In addition, since the upper surface of the spacer 22B and the lower surface of the cover film layer 22A1 are completely adhered, dust does not enter from the upper surface.

In addition, when one two-stage dome switch 24 is pressed down by the presence of the spacer 22B and the communication holes 261 and 262, air moves from the communication holes 261 and 262, and the other two-stage dome switch is used. Since it is put to the circumference | surroundings of (24), it can prevent that a press operation is interrupted by air pressure.

In this way, the dome switches 23 and 24 are covered with the adhesive cover film 22A, and the adhesion layer 22A2 is used to adhere the circumference without a gap to increase the dustproof function, and the displacement improvement hole 203 only in the adhesive layer 22A2. ), Stable operation of minute on / off detection of the two-stage dome switch 24 can be realized.

As shown in FIG. 3, the base 26 is formed of a metal disc that is slightly larger than the rotation operating body 14. An indenter guide piece 74 that can engage with both recesses 56 of the indenter 21 is provided at the center of the base 26 to protrude from the bottom. At the corresponding positions of the upper substrate 25 and the sheet 22 corresponding to the indenter guide piece 74, the retreating ports 64 and 65 are formed at the penetrating positions, respectively, and the standing protrusion of the indenter guide piece 74 is installed. Do not disturb. Also, for the common fixed contact 59a, the first fixed contact 59b, and the second fixed contact 59c, the retracting opening 66 is formed in the sheet 22 so that they are exposed on the upper surface, and thus the lower contactor ( 16b, 17b, 18b) is made possible.

In addition, an elevating guide piece 77 having an inverted concave shape is provided on the outer circumferential side of the base 26 in a standing direction. The elevating guide piece 77 engages the holding piece 49 of the holder 19 described above in an inverted concave shape. Thereby, the reduction stroke length can be raised and lowered. By holding and retaining the holding pieces 49 on the lifting guide pieces 77 in the four directions, respectively, the uppermost rotary manipulator 14 held by the holder 19 corresponds to the direction in which it is pressed down. Tilting Therefore, the rotating operation body 14 slightly tilts the whole rotating operation body 14, and the part which sank by the fixed pushing stroke amount by the tilting presses down the peripheral switch S2, and functions as a switch.

9 is a block diagram showing the configuration of the digital camera 1 including the operation switch 10 configured as described above.

The digital camera 1 is connected to the control unit 82, and has a low pass filter 81, operation buttons 3, 4 and 5, a power supply unit 86, an indicator 2, a flash 83 and a camera unit 84. ) And a storage unit 85 are provided.

The operation switch 10 is connected to the low pass filter 81. When the low pass filter 81 receives a signal by momentary energization (for example, 1 kHz or less) from the first stage dome switch 23 or the second stage dome switch 24 of the operation switch 10, This signal is cut off so as not to be detected, and only the signal by energizing for a longer time is transmitted to the control unit 82. As a result, the operation switch 10 is prevented from malfunctioning when the operation switch 10 is momentarily pressed by the collision or the like.

The operation buttons 3, 4, and 5 (the shutter button 3, the menu button 4, and the playback button 5 shown in FIG. 1) transmit the pressing operation of the pressing operation to the control unit 82.

The power supply unit 86 supplies power to each unit.

The display unit 2 displays an image in accordance with a control signal of the control unit 82. This image can be an image captured by the camera unit 84, an image captured and stored in the storage unit 85, or a menu image.

The flash 83 emits strobe light in accordance with the control signal of the controller 82.

The camera unit 84 captures images according to the control signal of the controller 82, and transfers the captured image to the controller 82.

The storage unit 85 reads and writes data in accordance with the control signal of the control unit 82. The data may be appropriate data such as a program for displaying the captured image data shot by the camera unit 84, a menu screen, and the like.

With this configuration, the digital camera 1 operates in accordance with the operation of the operation switch 10 or the operation buttons 3, 4, and 5, so that the illumination by the flash 83, the photography by the camera unit 84, Operations necessary for shooting, such as displaying a picked-up image on the display unit 2, can be performed.

10 is an explanatory diagram showing a shape and a circuit configuration of the peripheral fixed contact portion 61. FIG. 10A is a plan view, and FIG. 10B is a longitudinal sectional view showing a schematic configuration.

As shown in Fig. 10A, the peripheral fixed contact portion 61 is provided with a second contact 61a at the center thereof, and two first contacts 61c are provided with the second contact 61a at the outside thereof. ) Are arranged symmetrically (illustrated left and right symmetry). Moreover, two support accommodation parts 61b are provided in the position different from the 1st contact 61c by 90 degree centering on the 2nd contact 61a. These two support accommodating parts 61b are arrange | positioned symmetrically (up-down symmetry) centering on the 2nd contact 61a. Therefore, the support accommodation part 61b and the 1st contact 61c are arrange | positioned in 4 directions centering on the 2nd contact 61a.

The support part 24b of the two stage dome switch 24 is mounted in the two support accommodation parts 61b. This support accommodating part 61b is not connected to any circuit as shown, and is a structure which does not energize. For this reason, the support part 24b of the two-stage dome switch 24 functions as a support part which positions (or positions) the position and height of the two-stage dome switch 24.

The first contact portion 24c of the two-stage dome switch 24 is disposed close to the two first contacts 61c. If the support part 24b of the two-stage dome switch 24 is mounted in the support accommodating part 61b in the correct posture between each of these two 1st contact 61c and two 1st contact parts 24c, As shown in FIG. 10 (B), it is in a state of being substantially evenly spaced apart by the distance Lc. This is because when the two stage dome switch 24 is comprised so that two support parts 24b may protrude downward rather than two first contact parts 24c, and the two stage dome switch 24 is placed on one plane, This is because the two support parts 24b are grounded so that the two first contact parts 24c are spaced apart from each other.

The second contact 61a is sufficiently spaced apart from the second contact portion 24a to face each other. The distance La between the second contact 61a and the second contact portion 24a is configured to be wider than the distance Lc between the first contact 61c and the first contact portion 24c.

And the 1st contact circuit K1 and the 2nd contact circuit K2 are provided in the board | substrate 25 (refer FIG. 3), as shown to FIG. 10 (A). The first contact circuit K1 is a circuit connected to the two first contacts 61c. When the first contact circuit K1 is brought into contact with each of the two first contacts 61c, the two first contact portions 24c of the two-stage dome switch 24 are metal two-stage domes. The switch 24 is energized and switched on, so that the first detection can be detected. Therefore, even if two first contact parts 24c of the two-stage dome switch 24 are in contact with one first contact 61c, as long as the other one is spaced apart from each other, the state is not energized and the switch is turned off.

The second contact circuit K2 is a circuit connected to the first contact portion 24c and the second contact portion 24a of the two-stage dome switch 24. When the center of the two-stage dome switch 24 is strongly pressed down and the second contact portion 24a contacts the second contact 61a, the second contact circuit K2 already has a two-stage dome connected to the first contact 61c. Since the two first contact portions 24c of the switch 24 are in contact with each other, the current flows between the first contact portion 24c and the second contact portion 24a of the metal two-stage dome switch 24. By this energization, the state is switched on, and the second detection can be detected.

Next, an operation when the operation switch 10 is operated by a user who uses the digital camera 1 will be described.

11 is an explanatory view showing the positional relationship between the holder 19 and the dome switches 23 and 24, and FIG. 12 is a state in which the operation switch 10 is separated into an operation side unit U1 and a detection side unit U2. Perspective view.

Here, the operation side unit U1 is comprised by the rotation operation body 14, the electrically conductive pieces 16, 17, and 18 (refer FIG. 3), the holder 19, and the indenter 21. As shown in FIG. The detection side unit U2 is constituted by the dome switch unit 58 and the base 26.

In the state where the operation switch 10 is waiting to be pressed down, the five dome switches 23 and 24 provided in the dome switch unit 58 shown in FIG. 3, FIG. 4 have a semi-circular dome shape, and the intermediate height An addition part opposes the lower end part of each pushing protrusion 50,57. These dome switches 23 and 24 are elastically displaced in the up and down direction in response to the down force from above, concave when the down force is applied, and are restored when the down force is released, and are returned to the original height position to be domed. , Be prepared for the next reduction. In addition, since the fixed contact of the dome switches 23 and 24 and the board | substrate 25 corresponding to it is not reduced, it is non-conductive and a detection signal is not output.

When the indenter 21 is pressed down as shown by arrow Y3 in FIG. 12, the indenter 21 sinks by the reduction stroke in response to the reduction force, and presses the central first stage dome switch 23. Then, the one-stage dome switch 23 is brought into planar contact with the central fixed contact 60 in the pressing direction to conduct the central stage, and outputs the central reduced signal from the central fixed contact 60. Then, when the pressing force of the indenter 21 is released, the first stage dome switch 23 is elastically restored, and the indenter 21 is pushed upward through the pressing protrusion 57 to return to the original position.

In addition, as shown by arrows Y1 (Y1a to Y1d) in FIG. 12, when the rotating operation body 14 is pressed down, the pressing force is applied at the specific positions Y1a to Y1d operated at the pressing operation. When it is pushed down by one step as shown by arrows Y1 (Y1a to Y1d), the rotary manipulator 14 pushes the two-stage dome switch 24 corresponding to the specific position via the pressing projection 50 (FIG. 11). The first contact portion 24c of the two-stage dome switch 24 is pressed in planar contact with the first contact 61c in the pressing direction to conduct the first signal from the first contact 61c. Output it.

Here, since the clearance between the 1st contact part 24c and the 1st contact 61c before pressing down is very small, the 1st contact part 24c and the 1st contact 61c are only made to push down the rotation operation body 14 lightly. It contacts and conducts, and outputs a 1st signal.

In addition, since the holder 19 is formed of a soft material, the holder 19 is curved and deformed when a part of the rotation operating body 14 is pressed down. For this reason, while the pressing protrusion 50 of the pressed part certainly sinks downward, it can prevent that the other pressing protrusion 50 next to the 90 degree influences and sinks.

That is, since the area | region of the soft material which forms the holder 19 exists between each pushing protrusion 50, this area | region can deform | transform and it can make it hard to transmit a pushing force to the adjacent pushing down protrusion 50. FIG.

Since the first signal detected in this manner is transmitted to the controller 82 beyond the low pass filter 81 described above, if the signal is a momentary signal due to a collision, it is cut so as not to become an operation signal.

The control unit 82 receiving the first signal performs a preparation operation. This preparation operation shifts from the standby state which erased the display of the display part 2, for example, to the shooting standby preparation state which displays the captured image from the camera part 84 on the display part 2 in real time, or is displayed. A menu screen is displayed in (2), and the command portion corresponding to the first contact portion 24c pressed down in the menu screen can be displayed so as to be known by blinking or the like.

As indicated by arrows Y2 (Y2a to Y2d) in FIG. 12, when the rotary manipulator 14 is pressed down more strongly, the two-stage dome switch is maintained as the first contact portion 24c is in contact with the first contact 61c. The portion of the second contact portion 24a, which is the vertex of 24, is pushed downward, so that the second contact portion 24a is uneven, and the second contact portion 24a contacts and conducts with the second contact 61a. Output a second signal.

Since the second signal is transmitted to the controller 82 beyond the low pass filter 81 described above, the second signal is cut so as not to become an operation signal if it is a momentary signal due to a collision.

The control unit 82 receives the second signal and executes the instructed operation. This instructed operation is appropriate, for example, by performing a setting operation such as time setting, such as having a flash, and switching a shooting mode such as white balance or the like, sequentially switching the reproduced image displayed on the display 2. I can do it.

Thereafter, when the pressing force of the rotating operation body 14 by the user is released, the two-stage dome switch 24 elastically returns, and pushes the holder 19 upward through the pressing protrusion 50. Thereby, the rotation operation body 14 returns to an original position.

In addition, when the rotary operation body 14 is rotated, the encoder movable contact plate 15 assembled to this rotary operation body 14 rotates in the same direction, and the encoder movable contact plate 15 is slid. The non-rotating upper contact 16a, 17a, 18a which is fixed to the holder 19 contacts the contact surface 40, and detects the phase signal as a rotary encoder. Moreover, since the sliding contact surface 40 is formed in the same plane, the upper contact 16a, 17a, 18a with respect to the sliding contact surface 40 ensures stable contactability.

On the other hand, with respect to the board | substrate 25 provided with the common fixed contact 59a, the 1st fixed contact 59b, and the 2nd fixed contact 59c, all the lower contacts 16b, 17b, and 18b always contact non-rotatingly. Stay in one state. Thereby, the signal of the position, rotation direction, and rotation speed which the rotation operation body 14 rotated by the signal obtained from the upper contact 16a, 17a, 18a is detected. In addition, when the rotary operation body 14 is rotated, the spherical body 55 located in both ends of the coil spring 54 provided in the indenter 21 is the uneven surface for rotation operation feeling of the indenter insertion hole 27 ( Corresponding to 35), since a constant pressing force is applied to the rotating operating body 14 to impart rotational resistance, a click feeling is obtained every time the rotating operating body 14 is rotated by 30 degrees. It is delivered clearly by hand. At this time, since the rotation operation feeling part and the contact part of the above-described feel mechanism are separated, the contact parts are not adversely affected by the consumption of each other.

By the above structure and operation | movement, the problem by the dispersion | variation at the time of manufacture can be prevented with respect to the dome switch unit 58 which detects a micro pressing, and a yield can be improved.

That is, the first contact circuit K1 is switched on only when the two first contact portions 24c of the two-stage dome switch 24 are in contact with the respective first contact 61c, and the first detection circuit K1 is switched on. Therefore, the switch on / off can be detected without any problem even when one first contact portion 24c is in constant contact with the first contact 61c due to the deviation during manufacture.

In particular, when determining the arrangement by bonding the two-stage dome switch 24 to the contact bonding portion 202 of the adhesive layer 22A2 of the sheet 22, the two-stage dome switch 24 may be inclined due to misalignment or the like. However, even in such a case, it can operate without a problem. That is, even if the two-stage dome switch 24 is inclined and bonded so that one of the two first contact portions 24c is in constant contact with the first contact 61c of the peripheral fixed contact portion 61, Since the 1st contact part 24c is spaced apart from the 1st contact 61c, this other 1st contact part 24c contacts / separates from the 1st contact 61c according to a pushing operation, and is favorable on / off The index finger can be executed. Therefore, the dome switch unit which works well can be manufactured easily. Moreover, since a yield is good, it can provide in large quantities at low cost.

In addition, since the support part 24b protrudes below the 1st contact part 24c in the two-stage dome switch 24, the two 1st contact part 24c has both the 1st contact 61c by the deviation at the time of manufacture. ) Can be prevented from being in contact with it. That is, since the support part 24b holds the height of the two-stage dome switch 24 as a support part, and the 1st contact part 24c is spaced apart from the 1st contact 61c, the accurate 1st detection can be performed reliably. It is possible to easily provide a dome switch unit.

In the second contact circuit K2, the second contact portion 24a of the two-stage dome switch 24 contacts the second contact 61a, and the first contact portion 24c contacts the first contact 61c. Since it is the structure which switches on when it contacts, and detects 2nd, 2nd detection can be reliably performed. In particular, since the second contact circuit K2 is connected to both of the first contacts 61c, the second detection can be performed if any one of the first contacts 24c is in contact with the first contacts 61c. have.

In this way, it is possible to provide a switch unit capable of reliably and accurately performing two-stage detection with different pressing strengths with a small number of parts.

In addition, the demand for the processing accuracy of the two-stage dome switch 24 and the adhesion accuracy of the sheet 22 (see FIG. 3 of the first embodiment) can be alleviated, thereby facilitating manufacture.

In addition, since the first signal and the second signal having different strengths of the reduction can be detected by one two-stage dome switch 24, the operating point at the time of the reduction operation is determined by the peak of the two-stage dome switch 24 and the reduction projection ( Only one contact portion 50) can be provided, and stable operation can be easily obtained.

In addition, the two-stage dome switch 24 can be easily switched on with a light reduction force because only the elastic force resisting the reduction operation comes from the two support portions 24b until the first signal is output. have. And until the 2nd signal is output after the output of a 1st signal, the elastic force which resists a pressing operation will be in the state originating in two support part 24b and two 1st contact part 24c. For this reason, if it is not pressed down certainly, it will not be switched on, and a user can clearly distinguish and use the difference of the pushing force required for a 1st signal, and the pushing force required for a 2nd signal.

In addition, the operation switch 10 having such a dome switch unit 58 provides an operation switch 10 capable of reliably and easily achieving the output function of, for example, the first signal before the start of the present operation. Can improve the user's satisfaction.

Since the holder 19 is made of a soft material, the clearance between the first contact portion 24c and the first contact 61c, which is a stroke for detecting the first signal, is very small, so that the sensitive reduction detection can be performed. Therefore, it is possible to prevent the first contact portion 24c and the other first contact portion 24c to be pressed down from being pressed down and detected. Therefore, it is possible to make it possible to detect light depressions sensitively and to prevent the misdetection at the sites not pressed down.

In addition, among the dome switches 23 and 24 serving as input devices in five directions, the two-stage dome switch 24 in the four directions excluding the center is not the conventional simple circular or elliptic type, but the first contact portion ( Since it has a special shape having 24c and support 24b, it is not necessary to interpose a flexible switch or a switch part of a membrane as in the prior art, thereby realizing a low cost and high reliability output of the first signal. Can be.

In addition, by covering the circumference of the two-stage dome switch 24 with the cover film layer 22A1 and adhering with the peripheral sheet portion 201 of the adhesive layer 22A2, it is possible to prevent the mixing of dust, In the rigid configuration provided with the communication hole 261 so that the smooth deformation operation of the short dome switch 24 is not prevented by air pressure, the problem caused by the inclination of the posture during the bonding of the two-stage dome switch 24 can be eliminated. Therefore, the production efficiency at the time of mass production can be raised significantly.

In addition, since the low pass filter 81 is configured to exclude the switch-on due to the impact, unintended malfunction can be prevented. In particular, even when the first signal is detected, the preliminary operation may be performed even when the first signal is detected. Therefore, since the preparatory operation is not performed when the shock is applied, the battery of the power supply unit 86 of the digital camera 1 may be prevented from being exhausted. .

Moreover, the operation switch 10 functions as a 5-way switch by the 1st stage dome switch 23 of a center direction, and the 2nd stage dome switch 24 of a 4 direction, and also the movable contact plate 15 for an encoder, and a conductive piece Since it functions as a rotary switch by (16, 17, 18), it can function as a rotary JOG / multidirectional input composite switch.

In addition, in order to function as a rotary JOG / multidirectional input composite switch, the operation switch 10 is configured in a circular shape in plan view, and the position of the multidirectional input (the position of the two-stage dome switch 24) is changed to the operation switch ( It is impossible to know from the shape of 10), and it is a structure which can input in multiple directions at any rotation position, but a user can input the direction which he wants to input easily and correctly. In other words, even if the user pushes down a position slightly shifted from the shape of the operation switch 10 and the user slightly lowers the position, the two-stage dome switch 24 that reacts sensitively is in the direction (position) intended by the user. It is possible to detect the pressure drop first, whereby the direction intended by the user can be easily and accurately input.

(2nd Example)

13 is an explanatory diagram of a second embodiment using two-stage dome switches 424 of different shapes.

FIG. 13A shows a plan view of the two-stage dome switch 424, and FIG. 13B shows a B-B enlarged section A-A sectional view of FIG. 13A.

The two-stage dome switch 424 is configured by a ring-shaped support portion 424b and a main body portion 425 that is curved so as to be circular and convex with two arm portions 426.

In the ring-shaped support portion 424b, as shown in Fig. 13B, the entire bottom face is in contact with the plane.

The arm part 426 has the reverse L-shaped cross section which raises upwards from the support part 424b and bends inward, and the 1st contact part 424c which protrudes downward in the vicinity of the main-body part 425 is provided.

The main body part 425 is formed in a dome shape, and the 2nd contact part 424a which becomes convex downward at the center of a lower surface is provided.

FIG. 13C is an explanatory diagram showing a shape and a circuit configuration of the peripheral fixed contact 461. The peripheral fixed contact 461 of this second embodiment has a shape in which the support accommodation portion 61b is removed from the peripheral fixed contact portion 61 of the first embodiment. That is, the second contact 461a is the same as the second contact 61a of the first embodiment, and the first contact 461c is the same as the first contact 61c of the first embodiment.

Surfaces other than the second contact 61a and the first contact 461c of the peripheral fixed contact 461 are covered with an insulating member, and a two-stage dome switch 424 is mounted thereon. The first contact portion 424c of the two-stage dome switch 424 is disposed close to the first contact 461c, and the second contact portion 424a is disposed opposite the second contact 461a.

Like the first embodiment, the first contact circuit K1 is a circuit connected to two first contacts 61c. In addition, the second contact circuit K2 is a circuit connected to the first contact portion 424c and the second contact portion 424a of the two-stage dome switch 424 as in the first embodiment.

When the center of the peripheral fixed contact 461 is pressed down, two 1st contact parts 424c will contact the 1st contact 461c, and the 1st contact circuit K1 will switch on. Also, when the center of the peripheral fixed contact 461 is pressed down, the second contact portion 424a contacts the second contact 461a, and the first contact portion 424c is already in contact with the first contact 461c. The second contact circuit K2 is switched on.

By the above structure, generation | occurrence | production of the inferior goods by the dispersion | variation at the time of manufacture can be suppressed, the detection of two stages with a different pressing force can be performed with high precision, and the effect similar to 1st Example can be acquired.

(Third Embodiment)

Fig. 14 shows an explanatory view of the bonding structure of the operation switch of the third embodiment. FIG. 14A shows a plan view of the dome switch unit 58A, and FIG. 14B shows an enlarged cross-sectional view of the F-F arrow G-G.

Since this third embodiment is the same as the first embodiment except for the adhesive layer 22A2, detailed description thereof will be omitted.

In the contact bonding layer 22A2, the contact bonding portion 202 in the first embodiment is replaced with a substantially circular contact bonding portion 207. And around the contact bonding part 207, the displacement improvement hole 208 which replaces the displacement improvement hole 203 is formed. The rest of the configuration is the same as in the first embodiment, and thus its detailed description is omitted.

Also in this case, the same effects as in the first embodiment can be obtained. That is, since the displacement improvement hole 208 exists around the 1st contact part 24c of the two-stage dome switch 24, operation | movement of the 1st contact part 24c is not disturbed by adhesion, and it is favorable. Depression detection can be performed. In addition, since the circumference is completely adhered without a gap, high dustproof performance can be obtained, and performance degradation due to dust can be prevented.

And even if the two-stage dome switch 24 is inclined according to the bonding state, the on / off of a switch can be detected without a problem.

In addition, although each of the above embodiments has been described as an example capable of detecting the rotation operation and the direction input operation with the rotation operation body 14 as the operation switch 10, the dome switch unit 58 is not limited to this and various operation switches can be used. Can be.

For example, a two-stage dome switch 24 is disposed in a plurality of circularly arranged side by side, and includes a substantially disk-shaped non-rotating operation body covering the entire upper portion thereof. It can also be set to. In this case, when a plurality of adjacent two-stage dome switches 24 detect the on / off in sequence, the control means determines that the rotation operation is performed by this signal, and may be configured to perform an operation corresponding to the rotation operation. .

In the configuration of the present invention and the correspondence of the above-described embodiment, the portable terminal of the present invention corresponds to the digital camera 1 of the embodiment, and in the following, the output means corresponds to the display unit 2, and the switch member and The dome switch corresponds to the two-stage dome switch 24, the circuit portion corresponds to the substrate 25, the switch unit corresponds to the dome switch unit 58, and the control means corresponds to the controller 82, but the present invention Is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

The present invention can be used for a switch unit of various uses, and in particular, it can be suitably used as an operation input means of a suitable device requiring a small switch unit such as a cellular phone, a PDA or a digital camera.

1: digital camera
2: indicator
10: operation switch
14: rotating operation body
24, 424 two-stage dome switch
24a, 424a: second contact portion
24b, 424b: support part
24c, 424c: first contact portion
25: substrate
58: dome switch unit
61a: second contact
61c: first contact point
82: control unit

Claims (6)

A switch member having at least two first contacts and connected between both first contacts with a conductive material,
Each of the first contact portions is a switch unit having a first contact portion contacting / separating and having a circuit portion switched on / off by the contact / separation;
The switch member has a support part for supporting the two first contact parts spaced apart from the first contact point,
The circuit portion is energized when both of the two first contact portions are in contact with each of the first contacts, and is switched on. When one of the two first contacts is spaced apart from the first contact portion, the circuit portion is energized. The switch unit which is the structure which becomes a switch off. The method of claim 1, wherein the switch member,
A second contact portion is further provided, and between the second contact portion and the first contact portion is connected with a conductive material,
The circuit portion,
A second contact that contacts / spaces the second contact;
A switch unit, wherein the distance from the second contact portion to the second contact portion is configured to be longer than the distance of the first contact portion from the first contact portion. The method of claim 2, wherein the switch member,
Dome switch having a dome shape,
The first contact portion is provided on an outer circumferential portion of a dome shape,
The switch unit provided with the said 2nd contact part in the vertex part of a dome shape. The switch member according to any one of claims 1 to 3, wherein a plurality of the switch members are disposed on the same plane,
And the circuit portion includes a plurality of the first contacts corresponding to the first contact portions of the respective switch members. The switch unit according to any one of claims 1 to 3,
An operation switch, provided on an upper surface side of the switch unit, having an operation body for accepting a user's pressing operation. The switch unit according to any one of claims 1 to 3,
Control means for executing a control operation in accordance with an input detection signal detected by the switch unit for an operation input;
A portable terminal comprising output means for outputting information in accordance with a control signal of the control means.

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