JP2024011361A - Assembly parts, electronic devices and manufacturing methods - Google Patents

Abstract

[Problem] To realize a technology that performs highly accurate positioning with a simple and low-cost configuration and improves the reliability of the connection state. [Solution] An assembled part in which a first part and a second part are connected, wherein the first part is a resin molded part in which a wiring part is formed, and the first part is connected to the second part. a first contact portion for connection to the first component; and at least one positioning portion provided adjacent to the first contact portion; 2 contact portions and at least one positioned portion fitted into the positioning portion, and in a state where the positioned portion is fitted into the positioning portion, the first portion of the first component The contact portion and the second contact portion of the second component are electrically connected by a welding member, and the first component and the second component are fixed by the caulked positioning portion. ing. [Selection diagram] Figure 7

Description

The present invention relates to a technique for connecting a molded component on which a wiring portion is formed and another component.

Electronic devices such as digital cameras and smartphones have various sensor modules built-in. Some sensor modules are configured as resin molded parts on which wiring parts and electrode parts are formed, called MID (Molded Interconnect Device, molded circuit parts).

As a method of electrically connecting a wiring section formed on a rigid printed circuit board and a wiring section of a flexible printed circuit board, there are a method of using a connector and a method of direct connection using solder (Patent Documents 1 and 2).

Japanese Patent Application Publication No. 07-086701 Patent application No. 11-289141

However, the connection using a connector increases the size and cost by the amount of the connector. Furthermore, connections using solder require jigs and the like for highly accurate positioning, and additional steps such as measures to improve the reliability of the connection and cutting of the printed circuit board are required.

The present invention has been made in view of the above problems, and its purpose is to realize a technology that performs highly accurate positioning with a simple and low-cost configuration and improves the reliability of the connection state.

In order to solve the above problems and achieve the objects, the present invention provides an assembled part in which a first part and a second part are connected, wherein the first part is made of resin on which a wiring part is formed. A molded part, comprising a first contact part for connecting with the second part, and at least one positioning part provided adjacent to the first contact part, and the second part comprises a second contact portion for connecting with the first component, and at least one positioned portion fitted into the positioning portion, the positioned portion fitted into the positioning portion. In this state, the first contact portion of the first component and the second contact portion of the second component are electrically connected by a welding member, and the caulked positioning portion connects the first contact portion to the second contact portion of the second component. The first part and the second part are fixed.

According to the present invention, it is possible to perform highly accurate positioning with a simple and low-cost configuration, and to improve the reliability of the connection state.

FIG. 1 is a block diagram showing the configuration of an electronic device according to the present embodiment. FIG. 2 is an external view of an electronic device according to the present embodiment. FIG. 1 is an exploded perspective view of the electronic device according to the present embodiment. FIG. 4 is a perspective view showing the internal structure of the upper cover of FIG. 3; FIG. 5 is an exploded perspective view of the shake detection section in FIG. 4. 6 is a diagram showing the structure of a first contact portion of a sensor module and a second contact portion of a flexible printed circuit board in Embodiment 1. FIG. 1 is a sectional view showing a connection structure between a sensor module and a flexible printed circuit board in Embodiment 1. FIG. FIG. 7 is a cross-sectional view showing a connection structure between a sensor module and a flexible printed circuit board in Embodiment 2. 7 is a diagram showing the structure of a first contact portion of a sensor module in Embodiment 3. FIG. 7 is a diagram showing the structure of a first contact portion of a sensor module in Embodiment 3. FIG.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. Note that the following embodiments do not limit the claimed invention. Although a plurality of features are described in the embodiments, not all of these features are essential to the invention, and the plurality of features may be arbitrarily combined. Furthermore, in the accompanying drawings, the same or similar components are designated by the same reference numerals, and redundant description will be omitted.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which an electronic device of the present invention is applied to a digital single-lens reflex camera capable of taking still images and recording moving images will be described in detail below with reference to the accompanying drawings.

<Device Configuration> First, the configuration and functions of the digital camera of this embodiment will be described with reference to FIGS. 1 and 2.

FIG. 1 is a block diagram showing the internal configuration of the digital camera and lens unit of this embodiment. FIG. 2(a) is a front perspective view of the digital camera with the lens unit removed, and FIG. 2(b) is a rear perspective view of the digital camera.

The lens unit 200 is detachable from the digital camera (hereinafter referred to as camera) 100. 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.

The lens unit 200 and the camera 100 are connected 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. Specifically, the system control section 307 of the camera 100 and the lens control section 203 of the lens unit 200 communicate, and the lens control section 203 controls the lens drive section 204 under the control of the system control section 307. The aperture 211 and lens 210 are driven. The lens 210 forms an optical image from the subject on the imaging unit 302.

The shutter 301 is disposed between the imaging unit 302 and the lens 210, and blocks light from the lens 210 to the imaging unit 302 in a shooting standby state. In the photographing state, the shutter 301 is opened and an optical image formed by the lens 210 is formed on the imaging section 302 under the control of the system control section 307 . The imaging unit 302 is an image sensor that includes an imaging unit such as a CCD or CMOS that converts an optical image into an electrical signal. The A/D converter 304 converts the analog signal output from the imaging unit 302 into a digital signal.

The image processing unit 305 performs predetermined image processing on the data from the A/D converter 304 or the data from the memory control unit 306. Further, the image processing unit 305 performs predetermined calculation processing using the captured image data, and the system control unit 307 performs exposure control and distance measurement control based on the calculation results. As a result, TTL (through-the-lens) type AF (autofocus) processing, AE (automatic exposure) processing, and EF (flash pre-emission) processing are performed. The image processing unit 305 further performs predetermined calculation processing using the captured image data, and also performs TTL-based AWB (auto white balance) processing based on the calculation results.

The memory control unit 306 controls data exchange between the A/D converter 304, the image processing unit 305, and the memory 308. Digital data output from the A/D converter 304 is directly written into the memory 308 via the image processing section 305 and the memory control section 306 or via the memory control section 306. The memory 308 stores image data obtained from the imaging unit 302 and A/D converter 304 and image display data to be displayed on the display unit 105 or 106. The memory 308 has a storage capacity sufficient to store a predetermined number of still images and a predetermined period of moving images and audio. Furthermore, the memory 308 also serves as an image display memory (video memory).

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 section 105 or the display section 106. The display image data written in the memory 308 is displayed on the display section 105 or the display section 106 via the D/A converter 309. Display unit 105 and display unit 106 perform display on a display device according to an analog signal from D/A converter 309. In this way, the EVF performs live view (LV) display (through image display) by converting the digital signal stored in the memory 308 into an analog signal and sequentially transmitting the signal to the display unit 105 or display unit 106 for display. functions as

The nonvolatile memory 310 is an electrically erasable/recordable memory, such as a flash ROM. The nonvolatile memory 310 stores constants, programs, etc. for the operation of the system control unit 307.

The system control unit 307 is an arithmetic processing unit including at least one processor and/or at least one circuit, and controls the entire camera 100 in an integrated manner. For example, a RAM is used as the system memory 311, and is also used as a work memory in which constants and variables for the operation of the system control unit 307, programs read from the nonvolatile memory 310, and the like are expanded. The system control unit 307 also performs display control by controlling the memory 308, the D/A converter 309, the display units 105 and 106, and the like. The system timer 312 is a time measurement unit that measures the time used for various controls and the time of a built-in clock.

The first shutter switch 104a is turned on when the shutter button 104 provided on the camera 100 is pressed half-way (instruction to prepare for photographing) during operation, and generates a first shutter switch signal SW1. The first shutter switch signal SW1 starts operations such as AF processing, AE processing, AWB processing, and EF processing.

The second shutter switch 104b is turned on when the operation of the shutter button 104 is completed, that is, when the shutter button 104 is pressed all the way down (photographing instruction), and generates a second shutter switch signal SW2. The system control unit 307 causes the shutter 301 to drive the shutter blades 301a using the second shutter switch signal SW2, and starts a series of shooting processing operations from reading out signals from the imaging unit 302 to writing image data to the recording medium 330. do. The shutter blade 301a moves at high speed inside the shutter 301 in a direction perpendicular to the optical axis of the lens 210, and instantly stops its operation by colliding with a stopper member (not shown) inside the shutter 301.

By selecting and operating various function icons displayed on the display sections 105 and 106, the operation section 108 is assigned an appropriate function for each scene, and acts as various function buttons. Examples of the function buttons include an end button, a return button, an image forwarding button, a jump button, a narrowing down button, and an attribute change button. For example, when a menu button is pressed, various settable menu screens are displayed on display section 105 or display section 106.

The power switch 103 is an operation member that turns on/off the power of the camera 100.

The power supply control unit 313 includes a battery detection circuit, a DC-DC converter, a switch circuit for switching the block to which electricity is supplied, and the like, and detects whether or not a battery is attached, the type, and the remaining amount. Further, the power supply control section 313 controls the DC-DC converter according to the detection result and the control of the system control section 307, and supplies the necessary voltage to each section including the recording medium 330 for a necessary period.

The power supply unit 314 includes a primary battery such as an alkaline battery or a lithium battery, a secondary battery such as a NiCd battery, a NiMH battery, or a Li-ion battery, an AC adapter, or the like. The recording medium I/F 315 is an interface with a recording medium 330 such as a memory card or a hard disk. The recording medium 330 is a memory card or the like for recording photographed images, and is composed of a semiconductor memory, an optical disk, a magnetic disk, or the like.

The communication unit 316 is communicably connected to an external device via a wireless antenna or a wired cable, and transmits and receives images and audio. The communication unit 316 can also be connected to a wireless LAN (Local Area Network) and the Internet. The communication unit 316 can transmit image data (including live view images) captured by the imaging unit 302 and image data recorded on the recording medium 330 to an external device, and can also transmit image data and other various types from the external device. Can receive information.

The shake detection unit 320 detects the amount of vibration of the camera 100 in three orthogonal axes directions. The shake detection unit 320 is, for example, a gyro sensor that detects the angular velocity of the camera 100 in three axes of the pitch direction, the yaw direction, and the roll direction.

In the camera 100 of this embodiment, the sensor drive unit 303 moves the imaging unit 302 based on the amount of vibration detected by the shake detection unit 320 to perform optical shake correction. Further, the image processing unit 305 performs electronic shake correction of the image based on the amount of vibration detected by the shake detection unit 320 under the control of the system control unit 307 .

FIG. 3 is an exploded perspective view of the camera 100 shown in FIG. 2 with the front, rear, and lower cover members removed.

A shutter 301, an imaging section 302, a sensor driving section 303, and a system control section 307 are fixed to the main frame 120 using fastening members (not shown) such as screws. The upper cover 110 is an exterior member that constitutes the upper part of the camera body. The upper cover 110 is fixed to the upper part of the main frame 120 with fastening members (not shown) such as screws.

FIG. 4(a) is an external perspective view of the upper cover 110 with the top cover 110 turned upside down so that the back side is visible. FIG. 4(b) is an exploded perspective view including members attached to the back surface of the upper cover 110 shown in FIG. 4(a). The upper cover 110 includes a cover member 111 that covers the upper part of the main frame 120. The cover member 111 is provided with a power button, a main electronic dial, a sub electronic dial, a shutter button, an accessory shoe, and the like. Further, as shown in FIG. 4B, the shake detection section 320 is fixed to the center portion of the back surface of the cover member 111 by a fastening member 401 such as a screw.

FIG. 5 is an exploded perspective view of the shake detection section 320.

The shake detection unit 320 includes a sensor module 500 (first component), a flexible printed circuit board 504 (second component), a first buffer member 505A, a second buffer member 505B, a first holding member 506A, and a second buffer member 505A. The holding member 506B is included. The shake detection section 320 is an assembly component in which the sensor module 500 and the flexible printed circuit board 504 are connected.

The sensor module 500 includes a base member 502 molded from a resin material, and is a resin molded component called an MID (Molded Interconnect Device, molded circuit component), in which wiring portions 501 are directly formed at necessary locations on the base member 502. be. MID is, for example, a technology for forming wiring parts and electrode parts at necessary locations of a three-dimensional shaped part by laser or insert molding.

A gyro sensor 503 that detects the attitude of the camera 100 and peripheral circuit components 512 of the gyro sensor 503 are mounted on the sensor module 500. The gyro sensor 503 detects the angular velocity of the camera 100 in three orthogonal axes directions. A plurality of gyro sensors 503 may be mounted.

The flexible printed circuit board (hereinafter referred to as FPC) 504 is a board component including a wiring board or a circuit board having a first terminal part 504A and a second terminal part 504B. The first terminal portion 504A is connected to the sensor module 500. The second terminal section 504B is connected to the system control section 307. The first terminal portion 504A and the sensor module 500 are electrically connected through a plurality of contact portions 508 formed on the base member 502. The second terminal section 504B is electrically connected to a connector (not shown) connected to the system control section 307.

The FPC 504 connects the sensor module 500 and the system control unit 307 so that information can be exchanged. The system control unit 307 can acquire the detection result by the gyro sensor 503 via the FPC 504.

The first buffer member 505A and the second buffer member 505B are made of an elastic material such as sponge or rubber that absorbs vibrations. The first buffer member 505A and the second buffer member 505B are arranged to sandwich the sensor module 500 in the vertical direction in FIG.

The first buffer member 505A and the second buffer member 505B are arranged substantially parallel to the first surface 502M of the sensor module 500 on which the contact portion 508 is formed. The first holding member 506A and the second holding member 506B are metal plates having surfaces substantially parallel to the first surface 502M, and the sensor module 500, the first buffer member 505A, and the second buffer member 505B are arranged so as to sandwich them in the vertical direction in FIG.

The first buffer member 505A is compressed between the first holding member 506A and the sensor module 500. The second buffer member 505B is compressed between the second holding member 506B and the sensor module 500. The first holding member 506A and the second holding member 506B are fastened by a fastening member 507 such as a screw, with the sensor module 500, the first buffer member 505A, and the second buffer member 505B sandwiched therebetween.

The sensor module 500 and the FPC 504 are separated from the sensor module 500 and the FPC 504 by the first buffer member 505A and the second buffer member 505B so as not to directly contact the first holding member 506A and the second holding member 506B. Supported. The gyro sensor 503 will not be able to accurately detect angular velocity if unnecessary vibrations are transmitted. By supporting it, transmission of unnecessary vibrations to the gyro sensor 503 can be prevented.

<Connection structure and manufacturing method>
Next, with reference to FIGS. 6 and 7, a connection structure between the sensor module 500 and the FPC 504 and a method for manufacturing an assembly in which the sensor module 500 and the FPC 504 are connected will be described.

FIG. 6A is an enlarged plan view of the first surface 502M of the sensor module 500 shown in FIG. 5. FIG. FIG. 6(b) is a sectional view showing the configuration of the contact portion 508 of the sensor module 500 taken along the line ii in FIG. 6(a). FIG. 6(c) is a cross-sectional view showing the configuration of the first terminal portion 504A of the FPC 504 corresponding to the ii cross section of FIG. 6(a).

6A and 6B, the first surface 502M of the base member 502 of the sensor module 500 has a plurality of first contact portions 600 as the contact portions 508 of the sensor module 500 shown in FIG. A plurality of first wiring portions 600a extending from the first contact portion 600 to a connection destination are formed in a predetermined pattern and at predetermined intervals. The broken line in FIG. 6(a) virtually indicates the outer shape of the first terminal portion 504A of the FPC 504. The first contact portion 600 and the first wiring portion 600a are formed by coating the first surface 502M of the base member 502 with a conductive material such as copper.

On the first surface 502M of the base member 502 of the sensor module 500, a first positioning part 601 and a second positioning part 602 are provided adjacent to both ends in the pitch direction where the first contact parts 600 are arranged. ing. The first positioning section 601 and the second positioning section 602 are protruding sections that stand up from the first surface 502M of the base member 502 of the sensor module 500 at a predetermined height in the yaw direction.

Note that the first contact portions 600 may be arranged in one row, two rows as shown in FIG. 6(a), or alternately arranged.

In FIG. 6(c), a plurality of second contact portions 604 made of a conductive material are arranged in a predetermined pattern and on a second surface 504M of the first terminal portion 504A of the FPC 504, which faces the base member 502 of the sensor module 500. It is formed by intervals.

The second contact portions 604 are arranged at the same intervals as the first contact portions 600. The first terminal portion 504A of the FPC 504 is provided with a first positioned portion 605 and a second positioned portion 606 adjacent to both ends in the direction in which the second contact portions 604 are arranged (pitch direction). It is being The first positioned portion 605 and the second positioned portion 606 are through holes that fit into the first positioning portion 601 and the second positioning portion 602 of the sensor module 500.

In a state where the first positioned part 605 and the second positioned part 606 of the FPC 504 are fitted into the first positioning part 601 and the second positioning part 602 of the sensor module 500, the plurality of first contact parts The first surface 502M of the sensor module 500 and the first terminal portion 504A of the FPC 504 are positioned such that the first surface 502M of the sensor module 500 and the first terminal portion 504A of the FPC 504 are in contact with each other.

FIG. 7 is a diagram illustrating a method of manufacturing a structure in which the sensor module 500 and the FPC 504 are connected.

FIG. 7 shows the first contact portion 600 of the sensor module 500 shown in FIG. 6(b) and the first contact portion 600 of the sensor module 500 shown in FIG. A state in which the second contact portion 604 of the FPC 504 shown in (c) is connected is shown.

FIG. 7A shows a state in which the first positioned part 605 and the second positioned part 606 of the FPC 504 are fitted into the first positioning part 601 and the second positioning part 602 of the sensor module 500. FIG. FIG. 7(b) shows that the FPC 504 is fixed to the sensor module 500 by caulking the first positioning part 601 and the second positioning part 602 of the sensor module 500 in the state shown in FIG. 7(a). It is a sectional view showing a state.

As shown in FIG. 7(a), the first positioning portion 605 of the FPC 504 is fitted or press-fitted into the first positioning portion 601 of the sensor module 500 within a predetermined tolerance, thereby forming a first contact point. The portion 600 and the second contact portion 604 are in a desired positional relationship that allows electrical connection. Note that the second positioning section 602 of the sensor module 500 and the second positioned section 606 of the FPC 504 may be configured to be fitted or press-fitted within a predetermined tolerance range, or as shown in FIG. ), the first contact portion 600 and the second contact portion 604 may be configured to be fitted with a predetermined gap within a range that maintains a desired positional relationship. Further, the second positioning part 602 of the sensor module 500 and the second positioned part 606 of the FPC 504 are fitted or press-fitted within a predetermined tolerance range, and the first positioning part 601 of the sensor module 500 and the second positioning part 606 of the FPC 504 are fitted or press-fitted within a predetermined tolerance range. The first positioned portion 605 may be configured to be fitted with a predetermined gap.

The first contact portion 600 and the second contact portion 604 are connected by solder. Specifically, solder is applied to at least one of the first contact portion 600 and the second contact portion 604 in advance, and heat treatment is performed with the first contact portion 600 and the second contact portion 604 in contact with each other. By applying heat to the solder using a tool 901 (see FIGS. 9 and 10), melting the solder, and cooling and solidifying the solder, the first contact portion 600 and the second contact portion 604 are welded by the solder. .

Note that by disposing an anisotropic conductive film (ACF) between the first contact part 600 and the second contact part 604 and applying pressure and heat to the ACF using a jig (not shown), the first The contact portion 600 and the second contact portion 604 may be connected.

By electrically connecting the first contact section 600 and the second contact section 604 with a conductive welding member such as solder or ACF, the sensor module 500 and the system control section 307 can exchange information via the FPC 504. It becomes possible.

Furthermore, simply connecting the first contact portion 600 and the second contact portion 604 with a welding member such as solder or ACF does not provide the desired connection strength. Therefore, when external force is applied to the FPC 504, the sensor module 504 A connection failure may occur between the FPC 504 and the FPC 504.

Therefore, in this embodiment, in a state where the first contact part 600 and the second contact part 604 are connected by the welding member as shown in FIG. 7(a), the first positioning part shown in FIG. 7(b) 601a and the second positioning part 602a, the first terminal part 504A of the FPC 504 is firmly fixed to the sensor module 500 by caulking the first positioning part 601 and the second positioning part 602. . Caulking is a process in which metal and resin, or resins of different materials that do not have weldability, are fitted together, and the head of the boss of one part is softened by ultrasonic vibration, heat, infrared rays, etc. to create a jig. This is a method of fixing it to the other part by pressing it according to the shape of the tip.

The sensor module 500 and the FPC 504 are firmly fixed by the caulked first positioning part 601a and second positioning part 602a. Thereby, even if an external force is applied to the FPC 504, connection failures between the sensor module 500 and the FPC 504 can be reduced.

In this embodiment, the first positioning part 601 and the second positioning part 602 of the sensor module 500 are caulked with the first contact part 600 and the second contact part 604 connected by a welding member. However, it is not limited to this. For example, the connection and caulking of the first contact portion 600 and the second contact portion 604 may be performed simultaneously using the same jig. Thereby, the working time during assembly can be shortened.

For example, when connecting the rigid printed circuit board and the FPC 504 using a welding member, it is necessary to position the rigid printed circuit board and the FPC 504 using a separate positioning jig because a positioning part cannot be erected from the rigid printed circuit board. However, when a separate positioning jig is used, tolerances of the positioning jig are added, resulting in problems such as a decrease in positioning accuracy or an increase in assembly work.

In contrast, according to the present embodiment, the sensor module 500 is provided with positioning parts 601 and 602, and the FPC 504 can be directly positioned, so a simple and low-cost configuration with high precision can be achieved without using a separate positioning jig. This allows accurate positioning and facilitates assembly work.

Further, according to this embodiment, the positioning parts 601 and 602 of the sensor module 500 are configured to both position the sensor module 500 and the FPC 504 and fix them by caulking.

Conventionally, the reliability of the connection between the sensor module 500 and the FPC 504 was ensured by performing separate adhesion, but in this embodiment, a separate adhesion process is not required, which reduces cost, workability, and connection reliability. It is advantageous from the viewpoint of

Moreover, since the positioning parts 601 and 602 have a certain length, it becomes easier to position the FPC 504 on the sensor module 500, and after positioning, the positioning parts 601 and 602 are shortened by caulking. This is effective in saving space for the sensor module 500 while maintaining workability.

According to this embodiment, it is possible to perform highly accurate positioning with a simple and low-cost configuration without using a separate positioning jig. Moreover, the reliability of the connection state can be improved without performing separate adhesion, and the sensor module 500 and FPC 504 having a complex three-dimensional shape can be connected with space-saving and simple work.

Note that, as shown in FIG. 6(b), the first positioning part 601 and the second positioning part 602 are located at the center of the first contact part 600 in the length direction (roll direction perpendicular to the pitch direction). It is desirable that the wiring section of the first terminal section 504A of the FPC 504 is provided closer to the sensor module 500 in the drawing direction (roll direction). Thereby, even if an external force is applied to the FPC 504, the external force is less likely to be applied to the first contact portion 600, and the reliability of the connection state can be improved.

Further, the first positioning section 601 and the second positioning section 602 are not limited to two locations at both ends of the first contact section 600, but may be provided at three or more locations. For example, as shown in FIG. 6(b), the third positioning is performed at a position between the first positioning part 601 and the second positioning part 602 and closer to the direction in which the wiring part of the first terminal part 504A of the FPC 504 is pulled out. A section 603 may be added. With this configuration, even if an external force is applied to the FPC 504, the presence of the third positioning portion 603 makes it possible to further improve the reliability of the connection state.

Moreover, instead of caulking all the positioning parts, at least one positioning part may be caulked within a range that can ensure connection strength.

Furthermore, when two or more positioning parts are provided, instead of caulking all the positioning parts, at least one positioning part may be caulked within a range that can ensure connection strength. For example, caulking may be performed only on the third positioning portion 603 to which external force is likely to be applied. This makes it possible to improve the reliability of the connection state without deteriorating workability during assembly.

Furthermore, in the first embodiment, an example has been described in which the sensor module 500 and the FPC 504 are aligned using a plurality of (two or three) positioning sections and positioned sections. On the other hand, by making the cross-sectional shapes of the positioning part and the positioned part polygonal, the relative rotation can be suppressed, so it is possible to perform positioning even if there is only one positioning part and the positioned part. Can be done. That is, the positions of the sensor module 500 and the FPC 504 can be aligned using at least one positioning section and the positioned section.

[Embodiment 2] Next, Embodiment 2 will be described.

FIG. 8 is a cross-sectional view showing a structure in which the first terminal portion 504A of the FPC 504 is connected to the sensor module 500 in the second embodiment. FIG. 8A is a cross-sectional view showing the first contact portion 600, the first positioning portion 601, and the second positioning portion 602 of the sensor module 500. FIG. 8B shows a state in which the first terminal portion 504A of the FPC 504 is fixed to the sensor module 500 by caulking the first positioning portion 601 and the second positioning portion 602 of the sensor module 500. FIG.

In FIG. 8A, a recess 800 opening upward in FIG. 8 is provided between the first positioning part 601 and the second positioning part 602 of the base member 502, and the first contact part 600 is arranged in the recess 800. be done.

In FIG. 8(b), with the first terminal portion 504A of the FPC 504 positioned on the sensor module 500, the first contact portion 600 and the second contact portion 604 are accommodated in the recess 800 of the base member 502. electrically connected by a welding member. The first terminal portion 504A of the FPC 504 is firmly fixed to the sensor module 500 by the caulked first positioning portion 601a and second positioning portion 602a.

In the first embodiment, the contact portion 508 of the sensor module 500 shown in FIG. The portion may become higher than both ends and may warp in a convex shape, reducing the reliability of the connection state.

Therefore, as shown in FIG. 8B, a recess 800 is provided in the sensor module 500, and the first contact part 600, the second contact part 604, and the welding member are arranged in the recess 800. Thereby, the FPC 504 is fixed in a horizontal state substantially parallel to the sensor module 500, resulting in a structure in which unevenness is less likely to occur, so that the reliability of the connection state can be improved.

In addition, in FIG. 8A, a wiring section 801 is provided on the side surface of the base of the first positioning section 601 and the second positioning section 602, and the first positioning section 605 and the second positioning section 606 of the FPC 504 are connected to each other. A conductive member may be provided to form a through hole. For example, the wiring sections 801 of the first positioning section 601 and the second positioning section 602 and the first positioning section 605 and the second positioning section 606 of the FPC 504 are connected to GND, respectively. With this configuration, the first positioning part 605 and the second positioning part 606 of the FPC 504 are connected to the GND while fitted to the first positioning part 601 and the second positioning part 602 of the sensor module 500. This allows for easy connection.

Further, the wiring portion 802 may be provided at the tip portions of the first positioning portion 601 and the second positioning portion 602. Thereby, the heat applied during the caulking process is efficiently transmitted to the first positioning part 601 and the second positioning part 602, so that the time required for thermal deformation can be shortened.

[Embodiment 3] Next, Embodiment 3 will be described.

In the first embodiment, the first contact section 600 of the sensor module 500 and the second contact section 604 of the FPC 504 are connected using a welding member such as solder or ACF. In this case, when welding is performed by applying heat or pressure to the welding member, the sensor module 500, which is an MID, is more likely to peel off the wiring part due to heat than the FPC 504.

Therefore, in this embodiment, when connecting the first contact part 600 of the sensor module 500 and the second contact part 604 of the FPC 504 using a welding member, the first contact part 600 and the second contact part 604 are connected. A shaped part is provided that makes it difficult for heat to be transferred to the surrounding area.

Heat and pressure are applied to the welding member using a heating jig 901, but the heating jig 901 is larger in size than the first contact portion 600 of the sensor module 500 and the second contact portion 604 of the FPC 504. Therefore, heat and pressure may be transmitted not only to the connection range of the first contact portion 600 of the sensor module 500 and the second contact portion 604 of the FPC 504 but also to the surrounding area.

Therefore, in this embodiment, measures are taken to reduce peeling of the first contact part 600 of the sensor module 500, the second contact part 604 of the FPC 504, and the wiring parts around them, to which the heat of the heating jig 901 is transmitted. are giving.
(1) Heat measures in the connection range 903 between the first contact part 600 and the second contact part 604 FIG. FIG. 3 is a cross-sectional view showing a configuration in which heat countermeasures are taken. FIG. 9A is a cross-sectional view showing a configuration in which the first contact portion 600 is provided with a first heat countermeasure. FIG. 9B is a plan view showing a configuration in which the first contact portion 600 is provided with a second heat countermeasure.

In the first heat countermeasure, as shown in FIG. 9(a), a through hole 900 penetrating the base member 502 is formed in the first contact portion 600, and the wiring on the back surface of the first surface 502M of the base member 502 is It is electrically connected to the section 902. As a result, the heat transmitted from the heating jig 901 to the first contact part 600 of the sensor module 500 via the second contact part 604 of the FPC 504 is transferred to the wiring part 902 on the back surface of the base member 502 via the through hole 900. The light is transmitted and diffused throughout the base member 502. Therefore, the structure is such that peeling of the wiring portion around the connection range 903, which occurs when the first contact portion 600 becomes high temperature, can be reduced.

In FIG. 9B, the range where the first contact portion 600 and the second contact portion 604 are connected by the welding member is indicated by a dotted line as a connection range 903.

In the second heat countermeasure, the connection range 903 between the first contact part 600 and the second contact part 604 is set so that the wiring width of the wiring part is outside the connection range 903 in order to increase the reliability of the connection state. It is thicker than the wiring width.

Further, in the connection range 903 between the first contact part 600 and the second contact part 604, an extension part 904 is provided in the direction opposite to the direction in which the wiring part 600a in the first contact part 600 is pulled out. The wiring width is made wider than that of the wiring portions 600a and 600b.

Since the extension part 904 is provided outside the connection range 903, it does not contribute to the connection between the first contact part 600 and the second contact part 604, but the heat applied by the heating jig 901 is transferred to the connection range 903. from the first contact portion 600 to the extended portion 904. This provides a structure that can reduce peeling of the wiring portion around the connection range 903 that occurs when the first contact portion 600 of the connection range 903 becomes high temperature.

Moreover, it is desirable that the wiring width of the wiring part 600b drawn out from the first contact part 600 in the connection range 903 is thicker than the wiring width of the other wiring part 600a. Further, in order to improve the efficiency of wiring space, the wiring width of the wiring portion 600b drawn out from the first contact portion 600 in the connection range 903 may be configured to become thinner as the distance from the connection range 903 increases. The heat transmitted from the heating jig 901 to the connection range 903 is more easily transmitted to the wiring part where the wiring width is thicker, so the heat that is generated around the connection range 903 due to the first contact part 600 of the connection range 903 becoming high temperature is This provides a structure that can reduce peeling of wiring parts.
(2) Measures against heat outside the connection range 903 between the first contact section 600 and the second contact section 604 FIG. FIG. 3 is a cross-sectional view showing a configuration in which countermeasures have been taken. FIG. 10A is a cross-sectional view showing a configuration in which the first contact portion 600 in the connection range 903 is provided with a third heat countermeasure. FIG. 9B is a plan view showing a configuration in which the first contact portion 600 is provided with a fourth heat countermeasure.

In the third heat countermeasure, as shown in FIG. 10(a), a groove 905 having a width and depth in the direction in which the wiring part 600a is pulled out from the first contact part 600 is provided, and the inner side surface of the groove 905 is A wiring portion 905a is formed on the bottom surface. As a result, the heat transmitted from the heating jig 901 to the first contact portion 600 is absorbed by the groove portion 905, resulting in a structure in which heat is difficult to be transmitted to the periphery of the first contact portion 600 in the connection range 903. Note that the width and depth of the groove portion 905 are determined depending on the size of the heating jig 901 and the material of the base member 502 so that the heat of the heating jig 901 is difficult to be transmitted to the vicinity of the first contact portion 600 in the connection range 903. It is desirable to set it.

In the fourth heat countermeasure, as shown in FIG. 10(b), the first contact part 600 in the connection range 903 is made into a step shape 906 higher than the surrounding area, and The configuration is such that the wiring portion 600a is drawn out. This makes it difficult for the heat of the heating jig 901 to be transmitted to the periphery of the first contact portion 600 in the connection range 903. The height of the stepped shape 906 of the first contact part 600 depends on the size of the heating jig 901 and the material of the base member 502, so that the heat of the heating jig 901 is distributed around the first contact part 600 in the connection range 903. It is desirable to set it so that it is difficult to convey.

According to the present embodiment, by making it difficult for the heat of the heating jig 901 to be transmitted to the periphery of the first contact portion 600 in the connection range 903, the first contact portion 600 generated when the first contact portion 600 becomes high temperature can be Peeling of the wiring portion around the contact portion 600 can be reduced.

[Other embodiments]
In each of the embodiments described above, a flexible printed circuit board (FPC) is exemplified as a component connected to the sensor module 500, which is an MID, but the present invention is not limited to this, and can also be applied to a rigid board, a flexible rigid board, etc. .

Further, in each of the embodiments described above, a digital camera is exemplified as an electronic device, but the electronic device is not limited to this, and is not limited to a personal computer (PC), a smartphone which is a type of mobile phone, a tablet PC, a wearable device, a server, and a game console. It can also be applied to medical equipment, industrial robots, automobiles, aircraft, drones, and their peripheral equipment.

Furthermore, the present invention is not limited to the configurations exemplified as the K embodiments described above, and materials, shapes, dimensions, forms, quantities, positions, etc. can be changed as appropriate without departing from the gist of the present invention. It is.

The disclosure herein includes the following assembly parts, electronic devices, and manufacturing methods.
[Configuration 1]
An assembled part connecting a first part and a second part,
The first component is a resin molded component on which a wiring section is formed, and includes a first contact section for connecting to the second component, and at least one contact section provided adjacent to the first contact section. one positioning part;
The second part includes a second contact part for connecting with the first part, and at least one positioned part fitted into the positioning part,
In a state where the positioning portion is fitted into the positioning portion,
the first contact portion of the first component and the second contact portion of the second component are electrically connected by a welding member;
An assembly part characterized in that the first part and the second part are fixed by the positioning part which is caulked.
[Configuration 2]
The positioning portion is a protrusion that stands up from a first surface of the first component where the first contact portion is formed,
The assembled component according to configuration 1, wherein the positioned portion is a through hole provided in a second surface of the second component where the second contact portion is formed.
[Configuration 3]
The positioning part has a first positioning part and a second positioning part formed at both ends in the direction in which the plurality of first contact parts are arranged,
Configuration 1 or 2, characterized in that the positioned portion has a first positioned portion and a second positioned portion formed at both ends in the direction in which the plurality of second contact portions are arranged. Assembly parts listed in.
[Configuration 4]
The assembly component according to configuration 2, wherein the first surface has a recess, and the first contact portion is formed in the recess.
[Configuration 5]
A wiring part of the first contact part is provided on a side surface of the positioning part,
5. The assembled component according to any one of configurations 1 to 4, wherein the positioned portion forms a through hole that passes through the second component.
[Configuration 6]
The assembly component according to any one of configurations 1 to 5, wherein the positioning portion is provided closer to the direction in which the wiring portion of the second contact portion of the second component is pulled out. .
[Configuration 7]
A third positioning part is provided at a position between the first positioning part and the second positioning part and closer to the direction in which the wiring part of the second contact part of the second component is pulled out. The assembled parts described in feature configuration 3.
[Configuration 8]
8. The assembly component according to any one of configurations 1 to 7, wherein a wiring section of the first contact section is provided at a tip end of the positioning section.
[Configuration 9]
Any one of configurations 1 to 8, wherein the first contact portion has a shaped portion for making it difficult for heat to be transferred to the periphery of a range where the first contact portion and the second contact portion are connected. or the assembled parts described in paragraph 1.
[Configuration 10]
The shaped portion may be a through hole penetrating the first surface where the first contact portion is formed, an extension portion provided in the first contact portion, or an enlarged wiring width in the range. 10. The assembly component according to configuration 9, characterized in that the assembly includes at least one of .
[Configuration 11]
According to configuration 9, the shaped portion includes at least one of a groove provided around the first contact portion and a convex shape of the first contact portion. Assembly parts.
[Configuration 12]
The second component is a flexible printed circuit board,
12. The assembly according to any one of configurations 1 to 11, wherein the welding member is a solder or an anisotropic conductive film.
[Configuration 13]
An electronic device comprising the assembled part according to any one of configurations 1 to 12.
[Configuration 14]
A method for manufacturing an assembled part in which a first part and a second part are connected,
The first component is a resin molded component on which a wiring section is formed, and includes a first contact section for connecting to the second component, and at least one contact section provided adjacent to the first contact section. one positioning part;
The second part includes a second contact part for connecting with the first part, and at least one positioned part fitted into the positioning part,
fitting the positioned part into the positioning part;
electrically connecting the first contact portion of the first component and the second contact portion of the second component with a welding member;
A manufacturing method characterized in that the first part and the second part are fixed by caulking the positioning part.

The invention is not limited to the embodiments described above, and various changes and modifications can be made without departing from the spirit and scope of the invention. Therefore, the following claims are hereby appended to disclose the scope of the invention.

500... Sensor module, 504... Flexible printed circuit board (FPC), 600... First contact section, 601... First positioning section, 602... Second positioning section, 604... Second contact section, 605... First Positioned part, 606...Second positioned part

Claims (14)

An assembled part connecting a first part and a second part,
The first component is a resin molded component on which a wiring section is formed, and includes a first contact section for connecting to the second component, and at least one contact section provided adjacent to the first contact section. one positioning part;
The second part includes a second contact part for connecting with the first part, and at least one positioned part fitted into the positioning part,
In a state where the positioning portion is fitted into the positioning portion,
the first contact portion of the first component and the second contact portion of the second component are electrically connected by a welding member;
An assembly part characterized in that the first part and the second part are fixed by the positioning part which is caulked. The positioning portion is a protrusion that stands up from a first surface of the first component where the first contact portion is formed,
The assembly component according to claim 1, wherein the positioned portion is a through hole provided in a second surface of the second component where the second contact portion is formed. The positioning part has a first positioning part and a second positioning part formed at both ends in the direction in which the plurality of first contact parts are arranged,
2. The positioning target part has a first positioning part and a second positioning part formed at both ends in the direction in which the plurality of second contact parts are arranged. Assembly parts listed. 3. The assembly of claim 2, wherein the first surface has a recess, and the first contact portion is formed in the recess. A wiring part of the first contact part is provided on a side surface of the positioning part,
The assembled part according to claim 1, wherein the positioned portion forms a through hole passing through the second part. 2. The assembly part according to claim 1, wherein the positioning part is provided closer to the direction in which the wiring part of the second contact part of the second part is pulled out. A third positioning part is provided at a position between the first positioning part and the second positioning part and closer to the direction in which the wiring part of the second contact part of the second component is pulled out. 4. An assembly according to claim 3, characterized in that: The assembly part according to claim 1, wherein a wiring section of the first contact section is provided at a tip end of the positioning section. 2. The first contact portion has a shape portion for making it difficult for heat to be transferred to a periphery of a range where the first contact portion and the second contact portion are connected. Assembly parts. The shaped portion may be a through hole penetrating the first surface where the first contact portion is formed, an extension portion provided in the first contact portion, or an enlarged wiring width in the range. 10. The assembly according to claim 9, comprising at least one of . 10. The shaped portion includes at least one of a groove provided around the first contact portion and a convex shape of the first contact portion. assembly parts. The second component is a flexible printed circuit board,
The assembly part according to claim 1, wherein the welding member is a solder or an anisotropic conductive film. An electronic device comprising an assembly according to any one of claims 1 to 12. A method for manufacturing an assembled part in which a first part and a second part are connected,
The first component is a resin molded component on which a wiring section is formed, and includes a first contact section for connecting to the second component, and at least one contact section provided adjacent to the first contact section. one positioning part;
The second part includes a second contact part for connecting with the first part, and at least one positioned part fitted into the positioning part,
fitting the positioned part into the positioning part;
electrically connecting the first contact portion of the first component and the second contact portion of the second component with a welding member;
A manufacturing method characterized in that the first part and the second part are fixed by caulking the positioning part.

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