Position detection device, electronic device

Abstract

To provide pattern wiring means of enabling a direct formation of a conductive pattern to a fixing member in a position detection device for detecting a position by a slide between a brush contact point and the conductive pattern.SOLUTION: In a position detection device of the present invention, a lead-out pattern 617 is formed on a bottom surface of a concave part formed between two second slide patterns 611 and 613 on both neighbors of the lead-out pattern 617 in a region where the lead-out pattern 617 is crossed in view of a direction orthogonal to a surface where a locus of the movement of a contact part 395 and the slide patterns 611, 612, 613, 614, and 615 are formed. When the contact part 395 is moved from a state of being contacted to one slide pattern 611 of the two second slide patterns 611 and 613 of both neighbors of the lead-out pattern 617 in a direction of the movement of the contact part 395 to a state of being contacted to the other slide pattern 613, the contact part 395 is not contacted to the lead-out pattern 617.SELECTED DRAWING: Figure 9

Description

Technical Field

[0006] , ,

[0005] ,

[0007] ,

[0001] The present invention relates to an electronic device, and particularly to a position detection device that detects the position of a contact piece according to the energized state between the contact piece and a conductive pattern as the contact piece slides on the conductive pattern, and an electronic device provided with the same.

Background Art

[0002] [[ID=ll]] Conventionally, some electronic devices have a position detection structure configured to rotate a contact piece by rotating a dial as shown in Patent Document 1, and slide the brush contact portion of the contact piece and a conductive pattern on a wiring board.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the conventional technology disclosed in the above-mentioned patent document, a conductive pattern is formed on a wiring board.

[0005] Therefore, a fixing member for supporting the wiring board is required separately from the wiring board, and as a result, an operation of fixing the wiring board to the fixing member occurs, and there is room for improvement in productivity.

[0006] In addition, an error occurs in attaching the wiring board to the fixing member. As a result, it is necessary to enlarge the conductive pattern to allow misalignment between the contact piece and the conductive pattern, which has hindered miniaturization of the position detection structure.

[0007] Therefore, an object of the present invention is to provide a pattern wiring method that enables a conductive pattern to be directly formed on a fixing member in a position detection device that detects a position by sliding between a brush contact portion and a conductive pattern. [Means for solving the problem]

[0008] To achieve the above objective, the position detection device of the present invention comprises a group of sliding patterns composed of a plurality of sliding patterns for wiring provided on a circuit board on which circuit wiring is formed by injection molding on the surface of a resin molded product, and a sliding brush having a conductive contact portion that moves in conjunction with an operating member and contacts the sliding patterns, and the position of the operating member is detected by detecting the state of contact of the contact portion with the sliding patterns, The first sliding pattern among the plurality of sliding patterns is surrounded by the second sliding pattern among the plurality of sliding patterns, The position detection device has a wiring lead pattern for connecting the first sliding pattern to an area outside the group of sliding patterns, In the region where the aforementioned pull-out pattern intersects when viewed from a direction perpendicular to the trajectory of movement of the contact portion and the surface on which the sliding pattern is formed, The pull-out pattern is formed on the bottom surface of a recess formed between the two second sliding patterns adjacent to the pull-out pattern. The contact portion is characterized in that, when it moves from a state in which it is in contact with one of the two second sliding patterns adjacent to the pull-out pattern in the direction of movement of the contact portion to a state in which it is in contact with the other sliding pattern, the contact portion does not come into contact with the pull-out pattern. [Effects of the Invention]

[0009] According to the present invention, in a structure that detects position by sliding between a brush contact portion and a conductive pattern, a pattern wiring method is provided that makes it possible to directly form the conductive pattern on a fixed member. [Brief explanation of the drawing]

[0010] [Figure 1] Block diagram showing the camera's functional configuration. [Figure 2]It is an external perspective view of the camera [Figure 3] It is an exploded perspective view of the camera [Figure 4] It is an external perspective view of the top cover unit of the camera [Figure 5] It is an exploded perspective view showing only the members necessary for functioning the dial among the members constituting the top cover unit [Figure 6] It is an external perspective view of the top cover unit substrate [Figure 7] It is an enlarged view of the sliding pattern formed on the top cover unit substrate [Figure 8] It is an enlarged view showing an example of the positional relationship between the sliding pattern and the brush [Figure 9] It is an enlarged perspective view near the second lead wiring [Figure 10] It is an enlarged cross-sectional view near the second lead wiring [Figure 11] It is an enlarged perspective view near the second lead wiring according to the second embodiment [Figure 12] It is an enlarged cross-sectional view near the second lead wiring according to the second embodiment

Mode for Carrying Out the Invention

[0011] MID (Molded Interconnect Device) means a resin molded product on which wirings and electrodes are formed

[0012] MID (Molded Interconnect Device) is a three-dimensional resin molded product on the surface of which electrodes, circuits, etc. are formed

[0013] For example, it is a method of irradiating a wiring processing part on the surface of a molded product with laser to excite a catalyst. It is also called LDS (laser direct structuring). 1) Molding: A special resin containing a metal catalyst is molded into a product shape 2) Laser processing: Activate the catalyst by irradiating the part to be wired with a laser. 3) Plating pattern formation: Form a pattern by electroless plating.

[0014] [Example 1] Hereinafter, preferred embodiments of the present invention will be described in detail based on the accompanying drawings.

[0015] First, referring to FIGS. 1 to 4, the configuration of the camera 100 as an electronic device of the present invention will be described.

[0016] (Block diagram showing a configuration example of the camera 100) FIG. 1 is a block diagram showing a configuration example of the camera 100 of the present embodiment.

[0017] The camera 100 as an electronic device of the present invention is an interchangeable-lens camera in which the lens unit 200 is detachable.

[0018] (External perspective view of the camera 100) FIG. 2 is an external perspective view of the camera 100.

[0019] The lens unit 200 is fixed to the camera 100 by a lens mount 201 provided on the lens unit 200 and a lens mount 101 provided on the camera 100.

[0020] The lens unit 200 and the camera 100 are configured to be able to communicate with each other via a connector 202 provided on the lens unit 200 and a connector 102 provided on the camera 100.

[0021] Specifically, the system control unit 307 and the lens drive control unit 203 communicate with each other, and based on a signal from the system control unit 307, the lens drive control unit 203 controls the lens drive unit 204, and the lens drive unit 204 drives the aperture 211 and the lens 210. <00,​The lens 210 is used to form an optical image from the subject onto the image sensor 302.

[0023] The shutter 301 is a focal-plane shutter and is positioned between the image sensor 302 and the lens 210. When not shooting, it blocks light from the lens 210 to the image sensor 302.

[0024] During shooting, the shutter blades 301a are opened under the control of the system control unit 307 to enable the optical image from the lens 210 to be formed on the image sensor 302.

[0025] The image sensor 302 is an image sensor composed of a CCD or CMOS element, etc., which converts an optical image into an electrical signal, and has an electronic shutter function.

[0026] The A / D converter 304 converts analog signals into digital signals. The A / D converter 304 is used to convert analog signals output from the image sensor 302 into digital signals.

[0027] The image processing unit 305 performs resizing and color conversion processing, such as predetermined pixel interpolation and reduction, on the data from the A / D converter 304 or the data from the memory control unit 306.

[0028] Furthermore, the image processing unit 305 performs predetermined calculations using the captured image data, and the system control unit 307 performs exposure control and distance measurement control based on the obtained calculation results.

[0029] This enables TTL (Through-the-Lens) AF (Autofocus), AE (Automatic Exposure), and EF (Flash Pre-flash) processing. The image processing unit 305 further performs predetermined calculations using the captured image data and, based on the obtained calculation results, also performs TTL AWB (Automatic White Balance) processing.

[0030] The output data from the A / D converter 304 is written to the memory 308 via the image processing unit 305 and the memory control unit 306, or directly via the memory control unit 306.

[0031] The memory 308 stores image data for display on the display unit 105 or display unit 106, which has been converted into digital data by the A / D converter 304.

[0032] Additionally, memory 308 also serves as memory for image display (video memory).

[0033] The D / A converter 309 converts the image display data stored in the memory 308 into an analog signal and supplies it to the display unit 105 or the display unit 106.

[0034] In this way, the display image data written to the memory 308 is displayed by the display unit 105 or 106 via the D / A converter 309.

[0035] Display units 105 and 106 display information on an LCD or other display device according to the analog signal from the D / A converter 309.

[0036] Furthermore, the display unit 105 incorporates a capacitive or pressure-sensitive touch panel, providing a touch panel function that allows users to perform various operations by touching it with their fingers or other objects.

[0037] The digital signal, which has been converted to digital by the A / D converter 304 and stored in the memory 308, is converted to analog by the D / A converter 309 and then sequentially transferred to the display unit 105 or the display unit 106 for display.

[0038] Therefore, it is possible to display a through-image (live view display).

[0039] The non-volatile memory 310 is a memory that can be electrically erased and recorded on, such as an EEPROM.

[0040] The non-volatile memory 310 stores constants, programs, and other information for the operation of the system control unit 307.

[0041] The system control unit 307 is a control unit having at least one processor, and controls the entire camera 100 and the lens unit 200.

[0042] RAM is used for the system memory 311. The system memory 311 stores constants and variables for the operation of the system control unit 307, as well as programs read from the non-volatile memory 310.

[0043] Furthermore, the system control unit 307 also performs display control by controlling the memory 308, D / A converter 309, display unit 105, display unit 106, etc.

[0044] The system timer 312 is a timekeeping unit that measures the time used for various controls and the time of the built-in clock.

[0045] The first shutter switch 104a turns ON during the operation of the shutter button 104 on the camera 100, specifically when it is half-pressed (indicating preparation for shooting), and generates the first shutter switch signal SW1.

[0046] The first shutter switch signal SW1 initiates operations such as AF (autofocus), AE (automatic exposure), AWB (auto white balance), and EF (flash pre-flash).

[0047] The second shutter switch 104b turns ON when the shutter button 104 is fully pressed (instructing the camera to take a picture), generating the second shutter switch signal SW2.

[0048] The system control unit 307 controls the shutter blades 301a of the shutter 301 to be driven by the second shutter switch signal SW2.

[0049] Then, the system starts a series of shooting processes, from reading the signal from the image sensor 302 to writing the image data to the recording medium 330.

[0050] The shutter blades 301a travel at high speed inside the shutter 301 in a direction perpendicular to the optical axis of the lens 210, and instantly stop operating by colliding with a stopper member (not shown) inside the shutter 301.

[0051] Each operating element of the control unit 108 is assigned a function as appropriate for each situation by selecting various function icons displayed on the display unit 105 and the display unit 106, and acts as various function buttons.

[0052] Function buttons include, for example, an exit button, a back button, an image advance button, a jump button, a filter button, and an attribute change button.

[0053] For example, when the menu button is pressed, various configurable menu screens are displayed on the display unit 105 or the display unit 106.

[0054] The dial 109 is configured to be rotatable, allowing the user to switch between operating modes of the camera 100, such as still image shooting mode and video shooting mode, by rotating the dial 109.

[0055] The power to camera 100 is turned ON / OFF by the power switch 103.

[0056] The power control unit 313 consists of a battery detection circuit, a DC-DC converter, a switch circuit for switching which blocks are energized, and other components, and detects whether a battery is installed, its type, and its remaining charge.

[0057] Furthermore, the power control unit 313 controls the DC-DC converter based on its detection results and instructions from the system control unit 307, supplying the necessary voltage to each part, including the recording medium 330, for the required period of time.

[0058] The power supply unit 314 consists of primary batteries such as alkaline batteries and lithium batteries, secondary batteries such as NiCd batteries, NiMH batteries and Li batteries, and an AC adapter.

[0059] The recording medium I / F315 is an interface with recording media 330 such as memory cards and hard disks.

[0060] The recording medium 330 is a recording medium such as a memory card for recording captured images, and is composed of semiconductor memory, optical disks, magnetic disks, etc.

[0061] The communication unit 316 is connected wirelessly or via a wired cable and transmits and receives video signals, audio signals, and the like.

[0062] The communication unit 316 can also connect to a wireless LAN (Local Area Network) or the internet.

[0063] The communication unit 316 can transmit images captured by the image sensor 302 (including through images) and images recorded on the recording medium 330, and can also receive image data and other various information from external devices.

[0064] The vibration detection unit 320 is composed of, for example, a gyro sensor and detects the amount of vibration of the camera.

[0065] The vibration detection unit 320 detects the vibration and amount of vibration in the camera 100 in three axial directions: pitch, yaw, and roll.

[0066] In camera 100, the image sensor drive unit 303 controls the movement of the image sensor 302 according to the amount of shake detected by the shake detection unit 320 to perform optical shake correction.

[0067] Furthermore, the image processing unit 305 electronically corrects the image for shake according to the amount of shake detected by the shake detection unit 320 under the control of the system control unit 307.

[0068] (Expanded perspective view of Camera 100) Figure 3 is an exploded perspective view of camera 100 with the front, rear, and bottom cover members removed.

[0069] The base plate 120 is a structural element that provides the strength for the camera 100.

[0070] Then, a circuit board 602, which consists of a shutter 301, an image sensor 302, an image sensor drive unit 303, various electronic components (not shown) and connectors (not shown), and a system control unit 307, is fastened to the base plate 120 with screws (not shown).

[0071] The top cover unit 110 is fastened to the base plate 120 with screws (not shown).

[0072] (Perspective view showing the internal structure of the top cover unit 110) Figure 4 is a perspective view showing the internal structure of the top cover unit 110.

[0073] The top cover unit 110 consists of a top cover member 111 that covers the top surface of the camera 100, a power switch 103, a shutter button 104, a dial 109, and the like.

[0074] The top cover unit circuit board 600 is a component on which electrical wiring necessary for the operation of dial 109 and various other necessary electrical wiring are formed.

[0075] The top cover unit circuit board 600 will be described in detail later.

[0076] A connector 601 is mounted on the top cover unit circuit board 600.

[0077] The top cover unit board 600 and the circuit board 602 are electrically connected by a flexible board (not shown) that connects connector 601 and a connector (not shown) mounted on the circuit board 602.

[0078] (Configuration for making the dial 109 of the present invention functional) Next, with reference to Figure 5, the configuration for making the dial 109 of the present invention function will be described.

[0079] Figure 5 is an exploded perspective view showing only the components of the top cover unit 110 that are necessary for the dial 109 to function.

[0080] The dial 109 is formed in a cylindrical shape and has an operating part 605 operated by the user of the camera 100 and a shaft part 109a that serves as a rotation axis.

[0081] The top cover member 111 is formed by injection molding of a resin such as PC (polycarbonate), has a cylindrical hole 350a for inserting the shaft portion 109a, and rotatably holds the dial 109.

[0082] The click member 360 is formed by resin injection molding and has an uneven surface on its outer circumference at predetermined angular intervals in the circumferential direction.

[0083] The coil spring 370 is made of spring wire such as piano wire and is incorporated into the storage section 606 (see Figure 6) of the top cover unit circuit board 600 in a compressed state.

[0084] The steel ball 380, along with the coil spring 370, is incorporated into the housing 606 of the top cover unit circuit board 600.

[0085] The brush 390 is formed by press-forming a thin sheet metal with elastic properties such as phosphor bronze, and has multiple contact points 395.

[0086] The sliding contact portion 395 has an arc shape to reduce sliding resistance when sliding on the sliding pattern 609, which will be described later (see Figure 10).

[0087] To achieve both ease of processing and miniaturization of the brush 390, the radius of the arc of the sliding contact portion 395 should preferably be around several hundred μm.

[0088] In this embodiment, there are four contact points 395. The contact points 395 are coated with nickel underplating and gold plating on the surface to ensure durability and contact stability.

[0089] The shaft portion 109a of the dial 109 is inserted through the hole 350a of the top cover member 111, and with the top cover member 111 sandwiched between the click member 360 and the dial 109, the brush 390 and the click member 360 are fastened to the dial 109 with screws 420.

[0090] In this way, the brush 390, the click member 360, and the dial 109 are integrally held in the top cover member 111 so as to be rotatable with the shaft portion 109a as the pivot axis.

[0091] As a result, when the dial 109 is rotated, the click member 360 and the brush 390 are configured to rotate coaxially.

[0092] Furthermore, the steel ball 380 is incorporated in its assembled state into a position corresponding to the uneven shape of the click member 360, and is biased by the coil spring 370 in the direction from the outer circumference of the click member 360 toward the center of rotation.

[0093] As a result, when the dial 109 is rotated, the steel ball 380 falls into the concave shape of the coaxially rotating click member 360, creating a locking mechanism and a click sensation at predetermined angular intervals in the circumferential direction.

[0094] In this manner, the dial 109 is configured to stop at a predetermined locking position relative to the top cover member 111.

[0095] The top cover member 111 has two positioning protrusions 608 formed thereon. The top cover unit substrate 600 is also provided with two positioning holes 607.

[0096] With each of the two positioning protrusions 608 inserted through the corresponding positioning hole 607, the top cover unit substrate 600 is fastened to the top cover member 111 with screws 603.

[0097] Therefore, the top cover substrate 600 is positioned and fixed to the top cover member 111.

[0098] (Perspective view of the top cover unit circuit board 600) Figure 6 is an external perspective view of the top cover unit substrate 600, and Figure 7 is an enlarged view of the sliding pattern 609 formed on the top cover unit substrate 600.

[0099] Figure 8 is an enlarged view showing an example of the positional relationship between the sliding pattern 609 and the brush 390.

[0100] The top cover unit substrate 600, which serves as the substrate for the present invention, is made of a resin such as liquid crystal polymer and is formed by injection molding.

[0101] Various electrical wirings, such as a sliding pattern 609 that makes contact with the contact portion 395 of the brush 390 to activate the dial 109, are formed on the surface of the top cover unit circuit board 600.

[0102] The electrical wiring on the surface of the top cover unit substrate 600 is formed using MID technology.

[0103] MID technology is a technique for forming electrical wiring by irradiating a predetermined area of ​​a base material with a laser and applying metal plating only to the laser-irradiated area.

[0104] The top cover unit substrate 600 is manufactured, for example, through the following three processes. The first process is to mold a special resin containing a metal catalyst into the shape of the product.

[0105] The second step involves activating the catalyst by irradiating the areas of the resin part molded in the first step with a laser to form the wiring.

[0106] The third step involves forming electrical wiring on the areas irradiated with the laser in the second step using electroless plating.

[0107] The top cover unit substrate 600 has sliding pattern protrusions 610 that protrude from the reference surface 625, and the sliding pattern 609 is formed on the sliding pattern protrusions 610.

[0108] In order to achieve both the effects described later and the miniaturization of the top cover unit substrate 600, the height of the sliding pattern protrusion 610 from the reference surface 625 should preferably be around several hundred μm.

[0109] When the top cover unit 110 is assembled, the sliding pattern 609 is positioned to be in contact with the contact portion 395 of the brush 390.

[0110] Furthermore, the contact portion 395 is biased to apply a predetermined load to the sliding pattern 609 by utilizing the elasticity of the brush 390, so that it can maintain contact even if there is looseness due to the rotation of the dial 109 or variations in the dimensional accuracy of the components.

[0111] In Figures 6, 7, and 8, for the sake of simplification, only the sliding pattern 609 and the electrical wiring in its vicinity are shown among the various electrical wirings.

[0112] In Figure 7, electrical wiring is indicated by hatching. Various electrical wirings, including the sliding pattern 609, are formed using MID (Molded Interconnect Device) technology.

[0113] In this context, MID technology is a technique that irradiates a predetermined area of ​​a base material with a laser, thereby forming a metal plating film only on the irradiated area.

[0114] The areas where the metal plating is applied form the conductive pattern. In this embodiment, the electrical wiring has approximately 5 μm of copper plating, approximately 8 μm of nickel plating, and then 0.03 to 0.2 μm of gold plating on top of that, for low resistance and wear resistance.

[0115] The sliding pattern 609 consists of a ground pattern 611, a first sliding pattern 612, a second sliding pattern 613, a third sliding pattern 614, and a fourth sliding pattern 615.

[0116] Furthermore, the shape corresponds to the rotational trajectory of the contact point 395 and is formed by combining one or more concentric circular arc shapes.

[0117] The sliding pattern projection 610 is composed of multiple projections whose shapes correspond to the shapes of the ground pattern 611, the first sliding pattern 612, the second sliding pattern 613, the third sliding pattern 614, and the fourth sliding pattern 615.

[0118] Each of the ground pattern 611, the first sliding pattern 612, the second sliding pattern 613, the third sliding pattern 614, and the fourth sliding pattern 615 is electrically connected to the connector 601.

[0119] Electrical connection to connector 601 is made by circuit wiring (not shown) provided on top cover unit circuit board 600.

[0120] Therefore, each of the ground pattern 611, the first sliding pattern 612, the second sliding pattern 613, the third sliding pattern 614, and the fourth sliding pattern 615 is configured to be electrically connectable to the circuit board 602 on which the system control unit 307 is configured.

[0121] Here, the third sliding pattern 614 is surrounded by the ground pattern 611 and the first sliding pattern 612.

[0122] Therefore, in order to electrically connect the third sliding pattern 614 to the connector 601, wiring is required to be brought out to the outside of the sliding pattern 609.

[0123] The first lead wire 616 is for leading the third sliding pattern 614 to the outside of the sliding pattern 609.

[0124] Similarly, the fourth sliding pattern 615 is surrounded by the ground pattern 611 and the second sliding pattern 613.

[0125] The second lead wire 617 is for leading the third sliding pattern 615 to the outside of the sliding pattern 609.

[0126] In this embodiment, the four contact points 395 of the brush 390 contact the ground pattern 611, the first sliding pattern 612, the second sliding pattern 613, the third sliding pattern 614, and the fourth sliding pattern 615.

[0127] This contact allows for the detection of which locking position dial 109 is stopped in.

[0128] More specifically, the first sliding pattern 612, the second sliding pattern 613, the third sliding pattern 614, and the fourth sliding pattern 615 are the targets.

[0129] The locking position of the dial 109 is detected by determining which of the four sliding patterns 612, 613, 614, and 615 is connected to the ground pattern 611 via a brush 390 made of a conductive material.

[0130] For example, if the brush 390 is located in the position shown in Figure 8, two of the four contact points 395 are in contact with the ground pattern 611.

[0131] Furthermore, one other contact point 395 is in contact with the second sliding pattern 613, and the remaining contact point 395 is in contact with the fourth sliding pattern 615.

[0132] As a result, the second sliding pattern 613 and the fourth sliding pattern 615 are electrically connected to the ground pattern 611 via a brush 390 made of a conductive material.

[0133] When the dial 109 is rotated, the rotation of the brush 390, which rotates integrally with the dial 109, changes the sliding pattern that is electrically connected to the ground pattern 611, depending on the locking position of the dial 109.

[0134] Therefore, it is possible to determine which locking position dial 109 is in.

[0135] As described above, in this embodiment, the camera 100 is configured to switch between operating modes such as still image shooting mode and video shooting mode depending on which locking position the dial 109 is in.

[0136] (Enlarged perspective view of the vicinity of the second lead wire 617) Figure 9 is an enlarged perspective view of the vicinity of the second lead wire 617. In Figure 9, the electrical wiring is indicated by hatching.

[0137] As mentioned above, the ground pattern 611, the second sliding pattern 613, and the fourth sliding pattern 615 are each formed on independent protrusions that constitute the sliding pattern protrusion 610.

[0138] Here, the protrusion on which the ground pattern 611 is formed is referred to as the ground pattern protrusion 611a.

[0139] The projection on which the second sliding pattern 613 is formed is referred to as the second sliding pattern projection 613a.

[0140] The projection on which the fourth sliding pattern 615 is formed is referred to as the fourth sliding pattern projection 615a.

[0141] Each sliding pattern projection 610 is formed on the top surface 623 on which the majority of the sliding pattern 609 is formed, and defines the radial end shape of the sliding pattern projection 610.

[0142] Furthermore, each sliding pattern projection 610 is formed on the side surface 624 that connects to the reference surface 625 and on the end of the sliding pattern projection 610 in the arc direction.

[0143] Each sliding pattern projection 610 consists of an arc portion 622 formed continuously from the top surface 633 and an inclined surface 621 formed continuously from the arc portion 622 and connected to the reference surface 625.

[0144] Basically, the sliding pattern 609 is formed only on the top surface 623 and the arc portion 622. The fourth sliding pattern 615 is also formed on the slope 621 on the side where the second lead wiring 617 is located within the arc-direction end.

[0145] As a result, the fourth sliding pattern 615 and the second lead wiring 617 are electrically connected.

[0146] The second lead wire 617 is formed on the reference surface 625, and its end is electrically connected to the fourth sliding pattern 615 formed on the inclined surface 621 of the fourth sliding pattern projection 615a.

[0147] Then, it passes through the reference surface 625 sandwiched between the side surface 624 of the ground pattern projection 611a and the side surface 624 of the fourth sliding pattern projection 615a.

[0148] Then, by passing between the inclined surface 621 of the ground pattern projection 611a and the inclined surface 621 of the second sliding pattern projection 613a, it is drawn out to the outside of the sliding pattern 609.

[0149] Here, the reason why the wiring connecting the fourth sliding pattern 615 and the second lead wiring 617 is on an inclined surface 621 rather than a surface perpendicular to the reference plane is to facilitate the irradiation of the laser for forming the wiring as described above.

[0150] Furthermore, the fourth sliding pattern projection 615a has four ends in the arc direction.

[0151] In this embodiment, as shown in Figure 7, the second lead wire 617 is led out from the end in the arc direction where the length of the second lead wire 617 passing between the ground pattern protrusions 611a is shortest.

[0152] (Enlarged cross-sectional view near the second lead wire 617) Figure 10 is an enlarged cross-sectional view of the vicinity of the second lead wire 617.

[0153] Figure 10 illustrates the state in which the contact portion 395 of the brush 390 is located at the boundary between the ground pattern projection 611a and the second sliding pattern projection 613a.

[0154] As mentioned above, a second lead wire 617 is formed on the reference surface 625 between the ground pattern projection 611a and the second sliding pattern projection 613a.

[0155] As shown in Figure 10, a portion of the contact portion 395 of the brush 390 penetrates between the ground pattern projection 611a and the second sliding pattern projection 613a.

[0156] However, the contact portion 395 is configured not to come into contact with the reference surface 625 between the ground pattern projection 611a and the second sliding pattern projection 613a.

[0157] Therefore, when the contact portion 395 of the brush 390 passes the boundary between the ground pattern projection 611a and the second sliding pattern projection 613a, the contact portion 395 of the brush 390 does not come into contact with the second lead wiring 617.

[0158] If the contact portion 395 of the brush 390 were to come into contact with the second lead wire 617, the fourth sliding pattern 615 would unintentionally become electrically connected to the ground pattern 611 via the brush 390, causing a misdetection of the current position of the dial 109.

[0159] On the other hand, since this embodiment is configured as described above, such false detections can be avoided.

[0160] By the way, since the brush contact portion 395 of the brush 390 slides against the sliding pattern 609, there is a risk that conductive wear particles may be generated from the brush contact portion 395 or the sliding pattern 609.

[0161] These wear particles accumulate, for example, on the second lead wire 617 between the inclined surface 621 of the ground pattern projection 611a and the inclined surface 621 of the second sliding pattern projection 613a.

[0162] This could lead to a short circuit between the second lead wire 617 and the ground pattern 611 or the second sliding pattern 613.

[0163] To prevent such malfunctions, it is effective to cover the second lead wire 617 between the inclined surface 621 of the land pattern projection 611a and the inclined surface 621 of the second sliding pattern projection 613a with a non-conductive material (not shown), such as an epoxy adhesive.

[0164] The features of this embodiment are summarized below.

[0165] The following explanation will be given using Figures 7, 8, 9, and 10.

[0166] The circuit board, on which the circuit wiring is formed by injection molding of the surface of a resin molded product, has a group of sliding patterns 609 consisting of multiple sliding patterns 611, 612, 613, 614, and 615 for wiring.

[0167] It has a sliding brush 390 that moves in conjunction with the operating member 109 and has a conductive contact portion 395 that contacts the sliding patterns 611, 612, 613, 614, and 615.

[0168] The position detection device detects the position of the operating member 109 by detecting the contact state of the contact portion 395 with the sliding patterns 611, 612, 613, 614, and 615.

[0169] The first sliding pattern 615 among the multiple sliding patterns 611, 612, 613, 614, and 615 is surrounded by the second sliding patterns 611 and 613 among the multiple sliding patterns.

[0170] The position detection device has a wiring lead pattern 617 for connecting the first sliding pattern 615 to an area outside the sliding pattern group 609.

[0171] The pull-out pattern 617 is the region where the trajectory of movement of the contact portion 395 intersects when viewed from a direction perpendicular to the surface on which the sliding patterns 611, 612, 613, 614, and 615 are formed.

[0172] The pull-out pattern 617 is molded into the bottom surface of a recess formed between the two second sliding patterns 611 and 613 adjacent to the pull-out pattern 617.

[0173] The contact portion 395 moves from a state in which it is in contact with one of the two second sliding patterns 611 and 613 adjacent to the pull-out pattern 617 in the direction of movement of the contact portion 395, to a state in which it is in contact with the other sliding pattern 613.

[0174] In this regard, the contact portion 395 is characterized by not coming into contact with the drawer pattern 617.

[0175] The following invention will be explained with reference to Figure 10.

[0176] The contact portion 395 has an arc shape.

[0177] The contact portion 395 moves from a state in which it is in contact with one of the two second sliding patterns 611 and 613 adjacent to the pull-out pattern 617 in the direction of movement of the contact portion 395, to a state in which it is in contact with the other second sliding pattern 613.

[0178] In this regard, the apex of the contact portion 395 penetrates the recess, and the depth to which the apex of the contact portion 395 penetrates the recess is shallower than the depth of the recess.

[0179] The following invention will be explained with reference to Figure 9.

[0180] The first sliding pattern 615, surrounded by the second sliding patterns 611 and 613, is formed into a convex shape 615a on the surface 625 where the pull-out pattern 617 is formed.

[0181] At the end of the contact portion 395 of the protrusion 615a in the sliding direction, a slope 621 is formed that connects the upper surface 623 of the protrusion 615a with the surface 625 on which the drawer pattern 617 is formed.

[0182] The first sliding pattern 615 and the pull-out pattern 617 are electrically connected via circuit wiring formed on the inclined surface 621.

[0183] The following invention will be explained with reference to Figure 7.

[0184] The sliding brush 390 has multiple contact portions 395.

[0185] The first sliding pattern 615 has multiple ends in the sliding direction of the contact portion 395.

[0186] The first sliding pattern 615 and the lead pattern 617 are electrically connected via circuit wiring formed on a slope 621 located at the end closest to the outer region of the sliding pattern group 609 among multiple ends.

[0187] [Example 2] The top cover unit circuit board 600 of the camera 100 will be described below with reference to Figure 11. Note that the same reference numerals are used for the same components as in Example 1 to avoid redundant explanations.

[0188] Figure 11 is an enlarged perspective view of the vicinity of the second lead wire 617 of the top cover unit substrate 600 of the second embodiment. In Figure 11, electrical wiring is indicated by hatching.

[0189] The difference between the top cover unit substrate 600 of the second embodiment and the top cover unit substrate 600 of the first embodiment is that the fourth sliding pattern 615 is positioned lower than the other sliding patterns 609.

[0190] More specifically, the fourth sliding pattern 615 is formed directly on the reference surface 625.

[0191] This allows the electrical connection between the fourth sliding pattern 615 and the second lead wiring 617 to be made on the same plane.

[0192] As a result, it becomes unnecessary to irradiate the inclined surface 621, which is more difficult to irradiate with a laser compared to a flat surface, thereby improving the productivity of electrical wiring formation.

[0193] Furthermore, this has the effect of shortening the path for the second lead wire 617 to the outside of the sliding pattern 609.

[0194] The features of this embodiment are summarized below.

[0195] Let's explain using Figure 11.

[0196] All of the multiple sliding patterns 611, 612, 613, 614, and 615 are formed into multiple protrusions 610 on the surface 625 on which the drawer pattern 617 is formed.

[0197] The protrusion 615a formed on the upper surface 623 of the first sliding pattern 615 is lower in height from the surface 625 on which the pull-out pattern 617 is formed than the protrusions 611a and 613a formed on the upper surface 623 of the second sliding patterns 611 and 613.

[0198] The following invention will be explained with reference to Figure 11.

[0199] The first sliding pattern 615 is formed on the surface 625 on which the draw pattern 617 is formed.

[0200] The second sliding patterns 611 and 613 are characterized in that all of them are formed on the upper surface 623 of a plurality of protrusions 611a and 613a formed on the surface 625 on which the draw-out pattern 617 is formed.

[0201] The following invention will be described.

[0202] The pull-out pattern 617 is located in the region where the trajectory of movement of the contact portion 395 intersects when viewed from a direction perpendicular to the surface on which the sliding patterns 611, 612, 613, 614, and 615 are formed.

[0203] The drawer pattern 617 is characterized by being covered with a non-conductive insulating material.

[0204] [Example 3] The top cover unit circuit board 600 of the camera 100 will be described below with reference to Figure 12. Note that the same reference numerals are used for components identical to those in Example 1 to avoid redundant explanations.

[0205] Figure 12 is an enlarged cross-sectional view of the top cover unit substrate 600 near the second lead wire 617 in the third embodiment.

[0206] The differences between the top cover unit substrate 600 of the third embodiment and the top cover unit substrate 600 of the first and second embodiments will be explained.

[0207] The key feature is that a convex shape 626 is provided across the entire width of each of the inclined surfaces 621 adjacent to the second lead wiring 617 of the ground pattern projection 611a and the inclined surface 621 adjacent to the second lead wiring 617 of the second sliding pattern projection 613a.

[0208] When conductive wear particles are generated from the brush contact area 395 or the sliding pattern 609, the convex shape 626 prevents the wear particles accumulated on the sliding pattern 609 from moving onto the second lead wire 617.

[0209] To fully achieve this effect, the amount of protrusion from the slope 621 of the convex shape 626 should ideally be around several tens of micrometers.

[0210] This reduces the risk of the second lead wire 617 short-circuiting with the ground pattern 611 or the second sliding pattern 613.

[0211] The features of this embodiment are summarized below.

[0212] This will be explained using Figure 12.

[0213] On the side wall 621 of the recess formed between the two second sliding patterns 611 and 613 adjacent to the pull-out pattern 617 in the direction of movement of the contact portion 395, a protrusion 626 or recess is formed over the entire direction perpendicular to the direction of movement of the contact portion 395.

[0214] [Other examples] Although preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications and changes are possible within the scope of its gist.

[0215] In this embodiment, we have described its application to a dial unit that performs rotational operation, but it can also be applied to other embodiments.

[0216] For example, it can also be applied to slide switches that perform reciprocating sliding operations. In this case, the sliding pattern will be linear rather than arc-shaped.

[0217] Furthermore, in Example 2, an example was described in which the fourth sliding pattern 615 is directly formed on the reference surface 625.

[0218] However, the fourth sliding pattern 615 is positioned lower than the other sliding patterns 609.

[0219] Furthermore, even if the wiring is not directly formed on the reference surface 625, the length of the inclined surface 621, which is difficult to irradiate with a laser, is shortened, thus improving the productivity of electrical wiring formation compared to Example 1.

[0220] Furthermore, although an example in Embodiment 3 described an example in which a convex shape 626 is provided on the inclined surface 621, providing a concave shape instead of a convex shape also has the effect of reducing the risk of the second lead wiring 617 short-circuiting with the ground pattern 611 or the second sliding pattern 613.

[0221] The following are embodiments included in the present invention.

[0222] (Composition 1) A group of sliding patterns 609 consisting of multiple sliding patterns 611, 612, 613, 614, and 615 for wiring, provided on a circuit board in which circuit wiring is formed by injection molding on the surface of a resin molded product, It has a sliding brush 390 that moves in conjunction with the operating member 109 and has a conductive contact portion 395 that contacts the sliding patterns 611, 612, 613, 614, and 615, In a position detection device that detects the position of the operating member 109 by detecting the contact state of the contact portion 395 with the sliding patterns 611, 612, 613, 614, and 615, The first sliding pattern 615 among the plurality of sliding patterns 611, 612, 613, 614, 615 is surrounded by the second sliding patterns 611, 613 among the plurality of sliding patterns. The position detection device has a wiring lead pattern 617 for connecting the first sliding pattern 615 to an area outside the sliding pattern group 609, In the region where the pull-out pattern 617 intersects with the trajectory of movement of the contact portion 395 when viewed from a direction perpendicular to the surface on which the sliding patterns 611, 612, 613, 614, and 615 are formed, The pull-out pattern 617 is molded on the bottom surface of a recess formed between the two second sliding patterns 611 and 613 adjacent to the pull-out pattern 617. A position detection device characterized in that, when the contact portion 395 moves from a state in which it is in contact with one of the two second sliding patterns 611, 613 adjacent to the pull-out pattern 617 in the direction of movement of the contact portion 395, to a state in which it is in contact with the other sliding pattern 613, the contact portion 395 does not come into contact with the pull-out pattern 617.

[0223] (Configuration 2) The contact portion 395 has an arc shape, The position detection device according to configuration 1, characterized in that when the contact portion 395 moves from a state in which it is in contact with one of the two second sliding patterns 611, 613 adjacent to the pull-out pattern 617 in the direction of movement of the contact portion 395, to a state in which it is in contact with the other second sliding pattern 613, the apex of the contact portion 395 penetrates the recess, and the depth to which the apex of the contact portion 395 penetrates the recess is shallower than the depth of the recess.

[0224] (Composition 3) The first sliding pattern 615, surrounded by the second sliding patterns 611 and 613, is formed into a convex shape 615a on the surface 625 on which the pull-out pattern 617 is formed. At the end of the contact portion 395 of the protrusion 615a in the sliding direction, a slope 621 is formed that connects the upper surface 623 of the protrusion 615a and the surface 625 on which the drawer pattern 617 is formed. The position detection device according to configuration 1 or 2, characterized in that the first sliding pattern 615 and the pull-out pattern 617 are electrically connected via circuit wiring formed on the inclined surface 621.

[0225] (Composition 4) The sliding brush 390 has a plurality of contact portions 395, The first sliding pattern 615 has multiple ends in the sliding direction of the contact portion 395, The position detection device according to any one of configurations 1 to 3, characterized in that the first sliding pattern 615 and the lead pattern 617 are electrically connected via circuit wiring formed on the inclined surface 621 provided at the end of the plurality of ends closest to the outer region of the sliding pattern group 609.

[0226] (Composition 5) All of the aforementioned sliding patterns 611, 612, 613, 614, and 615 are formed into a plurality of protrusions 610 on the surface 625 on which the drawer pattern 617 is formed. The position detection device according to any one of configurations 1 to 4, characterized in that the protrusion 615a formed on the upper surface 623 of the first sliding pattern 615 is lower in height from the surface 625 on which the pull-out pattern 617 is formed than the protrusions 611a and 613a formed on the upper surface 623 of the second sliding patterns 611 and 613.

[0227] (Composition 6) The first sliding pattern 615 is formed on the surface 625 on which the draw pattern 617 is formed. The position detection device according to any one of configurations 1 to 5, characterized in that all of the second sliding patterns 611 and 613 are formed on the upper surface 623 of a plurality of protrusions 611a and 613a formed on the surface 625 on which the pull-out pattern 617 is formed.

[0228] (Composition 7) In the region where the pull-out pattern 617 intersects with the trajectory of movement of the contact portion 395 when viewed from a direction perpendicular to the surface on which the sliding patterns 611, 612, 613, 614, and 615 are formed, The position detection device according to any one of claims 1 to 6, characterized in that the drawer pattern 617 is covered with a non-conductive insulating material.

[0229] (Composition 8) The position detection device according to any one of configurations 1 to 7, characterized in that the side wall 621 of the recess formed between the two second sliding patterns 611 and 613 adjacent to the pull-out pattern 617 in the direction of movement of the contact portion 395 has a convex portion 626 or a recess formed over the entire length in a direction perpendicular to the direction of movement of the contact portion 395.

[0230] (Composition 9) An electronic device 100 equipped with a position detection device as described in any one of configurations 1 to 8. [Explanation of Symbols]

[0231] 100 Cameras 109 Dial 390 brushes 395 Contact point 600 Top Cover Unit Circuit Board 609 Sliding Pattern 610 Sliding pattern protrusions 611 Ground Pattern 611a Ground pattern protrusions 612 First sliding pattern 613 Second sliding pattern 613a Second sliding pattern projection 614 Third sliding pattern 615 Fourth sliding pattern 615a Fourth sliding pattern projection 616 First Outlet Wiring 617 Second Outlet Wiring 621 Slope 623 Top surface (top surface) 625 reference surface 626 Convex shape

Claims

1. A group of sliding patterns consisting of multiple sliding patterns for wiring provided on a circuit board in which circuit wiring is formed by injection molding on the surface of a resin molded product, It has a sliding brush that moves in conjunction with the operating member and has a conductive contact portion that contacts the sliding pattern, In a position detection device that detects the position of the operating member by detecting the contact state of the contact portion with the sliding pattern, The first sliding pattern among the plurality of sliding patterns is surrounded by the second sliding pattern among the plurality of sliding patterns, The position detection device has a wiring lead pattern for connecting the first sliding pattern to an area outside the group of sliding patterns, In the region where the aforementioned pull-out pattern intersects when viewed from a direction perpendicular to the trajectory of movement of the contact portion and the surface on which the sliding pattern is formed, The aforementioned pull-out pattern is formed on the bottom surface of a recess formed between the two second sliding patterns adjacent to the pull-out pattern. A position detection device characterized in that, when the contact portion moves from a state in which it is in contact with one of the two second sliding patterns adjacent to the pull-out pattern in the direction of movement of the contact portion to a state in which it is in contact with the other sliding pattern, the contact portion does not come into contact with the pull-out pattern.

2. The contact portion is arc-shaped, The position detection device according to claim 1, characterized in that, when the contact portion moves from a state in which it is in contact with one of the two second sliding patterns adjacent to the pull-out pattern in the direction of movement of the contact portion to a state in which it is in contact with the other second sliding pattern, the apex of the contact portion penetrates the recess, and the depth to which the apex of the contact portion penetrates the recess is shallower than the depth of the recess.

3. The first sliding pattern, surrounded by the second sliding pattern, is formed on a protrusion formed on the surface on which the draw-out pattern is formed. At the end of the contact portion of the protrusion in the sliding direction, a slope is formed to connect the upper surface of the protrusion and the surface on which the draw pattern is formed. The position detection device according to claim 1, characterized in that the first sliding pattern and the pull-out pattern are electrically connected via circuit wiring formed on the inclined surface.

4. The sliding brush has a plurality of contact portions, The first sliding pattern has multiple ends in the sliding direction of the contact portion, The position detection device according to claim 3, characterized in that the first sliding pattern and the pull-out pattern are electrically connected via circuit wiring formed on the slope of the end of the plurality of ends that is closest to the outer region of the sliding pattern group.

5. All of the aforementioned sliding patterns are formed into a plurality of convex shapes on the surface on which the draw-out pattern is formed. The position detection device according to claim 3, characterized in that the protrusion formed on the upper surface of the first sliding pattern is lower in height from the surface on which the pull-out pattern is formed than the protrusion formed on the upper surface of the second sliding pattern.

6. The first sliding pattern is formed on the surface on which the draw pattern is formed. The position detection device according to claim 5, characterized in that all of the second sliding patterns are formed on the upper surfaces of a plurality of protrusions formed on the surface on which the drawer pattern is formed.

7. In the region where the aforementioned pull-out pattern intersects when viewed from a direction perpendicular to the trajectory of movement of the contact portion and the surface on which the sliding pattern is formed, The position detection device according to claim 1, characterized in that the aforementioned drawer pattern is covered with a non-conductive insulating material.

8. The position detection device according to claim 3, characterized in that the side wall of the recess formed between the two second sliding patterns adjacent to the pull-out pattern in the direction of movement of the contact portion has a convex or concave portion formed over the entire direction perpendicular to the direction of movement of the contact portion.

9. An electronic device comprising the position detection device described in claim 1.

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