WO2024228357A1 - Dispositif électronique - Google Patents

Dispositif électronique Download PDF

Info

Publication number
WO2024228357A1
WO2024228357A1 PCT/JP2024/016210 JP2024016210W WO2024228357A1 WO 2024228357 A1 WO2024228357 A1 WO 2024228357A1 JP 2024016210 W JP2024016210 W JP 2024016210W WO 2024228357 A1 WO2024228357 A1 WO 2024228357A1
Authority
WO
WIPO (PCT)
Prior art keywords
electronic component
circuit board
printed circuit
component body
electronic device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2024/016210
Other languages
English (en)
Japanese (ja)
Inventor
肇 福嶌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokyo Cosmos Electric Co Ltd
Original Assignee
Tokyo Cosmos Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tokyo Cosmos Electric Co Ltd filed Critical Tokyo Cosmos Electric Co Ltd
Priority to JP2025518134A priority Critical patent/JPWO2024228357A1/ja
Priority to CN202480028570.3A priority patent/CN121040215A/zh
Publication of WO2024228357A1 publication Critical patent/WO2024228357A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/02—Arrangements of circuit components or wiring on supporting structure
    • H05K7/12—Resilient or clamping means for holding component to structure

Definitions

  • the present invention relates to electronic devices.
  • Handheld electronic devices are evaluated assuming they are dropped.
  • Patent Document 1 discloses an electronic device that includes an electronic component having a lead terminal, a case in which the electronic component is housed, a nut that fastens the electronic component to the case, and a printed circuit board having a conductive path, with the lead terminal being electrically connected to the conductive path.
  • the terminal has a coil spring that contacts the printed circuit board in a compressed state
  • loosening of the nut can cause the electronic component to shift position relative to the printed circuit board, which can easily lead to poor contact between the coil spring and the printed circuit board.
  • the object of the present invention is to provide an electronic device that can prevent misalignment of electronic components relative to a printed circuit board.
  • an electronic device comprises: An electronic component body; A printed circuit board; a terminal having a coil spring that is in electrical contact with the printed circuit board while being compressed in a predetermined direction; a suppressing member that suppresses movement of the electronic component body so that the electronic component body does not move away from the printed circuit board in the predetermined direction; Equipped with.
  • the present invention makes it possible to prevent electronic components from becoming misaligned relative to a printed circuit board.
  • FIG. 1 is a front view of an electronic component according to an embodiment of the present invention.
  • FIG. 2 is a diagram illustrating an electronic device according to an embodiment of the present invention.
  • FIG. 3 is a side view of the electronic component according to the embodiment of the present invention.
  • FIG. 4 is a diagram illustrating an electronic device according to a comparative example.
  • FIG. 5 is a diagram illustrating a part of an electronic device according to an embodiment of the present invention.
  • FIG. 1 is a front view of an electronic component according to an embodiment of the present invention.
  • FIG. 2 is a diagram that shows a schematic diagram of an electronic device according to an embodiment of the present invention.
  • FIG. 1 depicts an X-axis, a Y-axis, and a Z-axis.
  • the left-right direction is referred to as the X-direction
  • the right direction is referred to as the right side or the "+X direction”
  • the left direction is referred to as the left side or the "-X direction”.
  • FIG. 1 is a front view of an electronic component according to an embodiment of the present invention.
  • FIG. 2 is a diagram that shows a schematic diagram of an electronic device according to an embodiment of the present invention.
  • FIG. 1 depicts an X-axis, a Y-axis, and a Z-axis.
  • the left-right direction is referred to as the X-direction
  • the right direction is referred to as the right side or the "+X
  • the up-down direction is referred to as the Y-direction
  • the up direction is referred to as the upper side or the "+Y direction”
  • the down direction is referred to as the lower side or the "-Y direction”.
  • the depth direction perpendicular to the paper surface is referred to as the Z-direction
  • the front direction is referred to as the front side or the "+Z direction”
  • the back direction is referred to as the back side or the "-Z direction”.
  • electronic device 100 includes electronic component 1, case 2, printed circuit board 3, mounting screw 17, and nut 19.
  • electronic component 1 is a potentiometer that outputs a voltage corresponding to the amount of mechanical displacement of the rotation of the input shaft, or a rotary encoder that converts the amount of mechanical displacement of the rotation of the input shaft into a digital amount.
  • the electronic component 1 has an electronic component body 12 , a bearing portion 13 , and an input shaft 15 .
  • the electronic component body 12 has a housing-like external shape and has an upper surface 12a, a lower surface 12b, a right side surface 12c, a left side surface 12d, a front surface 12e, and a rear surface 12f. Note that the interior of the electronic component body 12 is omitted in FIG. 1.
  • FIG. 3 is a side view of an electronic component according to an embodiment of the present invention.
  • the bearing portion 13 extends in the +Z direction (toward the viewer) from the front surface 12e.
  • the input shaft 15 is rotatably supported by the bearing portion 13.
  • a threaded portion is formed on the outer circumferential surface of the bearing portion 13.
  • the mounting screw 17 is constituted by the threaded portion.
  • the electronic component 1 has two first terminals 14, three second terminals 16, and a suppression member 18. Note that the number of first terminals 14 and second terminals is not limited to this.
  • the two first terminals 14 are arranged on the top surface 12a so as to be aligned in the X direction (left-right direction).
  • Each of the two first terminals 14 is an axial terminal that protrudes from the top surface 12a in the +Y direction (upward).
  • the three second terminals 16 are arranged on the top surface 12a so as to be aligned in the X direction (left-right direction). Each of the three second terminals 16 is located in a position in the -Z direction (rearward) from the first terminals 14. Of the three second terminals 16, the second terminals 16 located on the right and left sides in the X direction are located in the same positions in the X direction as each of the two first terminals 14.
  • Each of the three second terminals 16 has a spring member.
  • the spring member is, for example, a coil spring 16A.
  • the coil axis of the coil spring 16A extends in the +Y direction from the upper surface 12a.
  • the coil spring 16A is disposed in a compressed state between the upper surface 12a and the lower surface 3b of the printed circuit board 3.
  • the length of the coil axis of the coil spring 16A is set to be longer than the gap in the Y direction (vertical direction) between the upper surface 12a and the lower surface 3b of the printed circuit board 3 by the amount by which the coil spring 16A is compressed.
  • the suppression member 18 is disposed in a position in the -Z direction (rearward direction) relative to each of the three second terminals 16.
  • the suppression member 18 is disposed in the same position in the X direction as the second terminal 16 that is disposed in the center position in the X direction among the three second terminals 16.
  • the suppression member 18 is a flat member whose elongated direction is the Y direction (vertical direction).
  • the suppression member 18 has a fixed portion 18a, a crank portion 18b, and a suppression portion 18c.
  • the fixed portion 18a extends from the lower end position of the back surface 12f to the upper end position, and is fixed to the back surface 12f.
  • the crank portion 18b is continuous with the upper end portion of the fixed portion 18a, and has a primary bent portion 18b-1 bent from the position of the back surface 12f in the -Z direction (rearward), and a secondary bent portion 18b-2 bent from the tip position of the primary bent portion 18b-1 in the +Y direction (upward).
  • the suppression portion 18c extends from the upper surface 12a in the +Y direction (corresponding to the "predetermined direction" of the present invention). Specifically, the suppression portion 18c has a primary extension portion 18c-1 that is continuous with the upper end of the secondary bent portion 18b-2 and extends from the position of the upper end in the -Z direction (rearward) relative to the +Y direction (upward), and a secondary extension portion 18c-2 that is continuous with the upper end of the primary extension portion 18c-1 and extends from the position of the upper end in the +Z direction (frontward) relative to the +Y direction (upward).
  • the secondary extension portion 18c-2 is bent at a predetermined angle relative to the primary extension portion 18c-1. This forms a convex portion 18c-3 that protrudes in the -Z direction (rearward).
  • the amount that the convex portion 18c-3 protrudes in the -Z direction (rearward) is set based on the results and evaluations of experiments and simulations.
  • the two first terminals 14, the three second terminals 16 (coil springs 16A), and the suppression member 18 each extend in the +Y direction (upward) from the top surface 12a.
  • the length of the first terminals 14 in the Y direction (upward and downward) is set according to the thickness of the printed circuit board 3. As a result, the upper ends of the first terminals 14 protrude in the +Y direction beyond the top surface 3a of the printed circuit board 3.
  • the upper end of the first terminal 14 is located further in the +Y direction (upward) than the upper end of the second terminal 16 (coil spring 16A).
  • the upper end of the suppression member 18 is located further in the +Y direction (upward) than the upper end of the first terminal 14.
  • Figure 3 shows the distance Y1 in the Y direction between the position of the upper end of the first terminal 14 and the position of the upper end of the suppression member 18.
  • the member that is stretched the most in the +Y direction (predetermined direction) is the suppression member 18, the member that is next most extended in the +Y direction is the first terminal 14, and the member that is next most extended in the +Y direction is the second terminal 16 (coil spring 16A).
  • the case 2 houses the electronic component main body 12.
  • the case 2 is box-shaped with an opening in the +Y direction (upward), and has a bottom wall 22b, a right side wall (not shown), a left side wall (not shown), a front wall 22e, and a rear wall 22f.
  • the front wall portion 22e faces the front surface 12e of the electronic component body 12 in the Z direction (depth direction).
  • the front wall portion 22e has an insertion hole 24 that passes through in the Z direction (depth direction).
  • the threaded portion (mounting screw 17) of the bearing portion 13 is located in the +Z direction from the front wall portion 22e.
  • a nut 19 is screwed onto the mounting screw 17.
  • the mounting screw 17 and the nut 19 fasten the electronic component body 12 to the front wall portion 22e.
  • the printed circuit board 3 has fitting holes 34 into which the two first terminals 14 are fitted, and a through hole 38 into which the suppressing portion 18c is fitted.
  • the protruding portion 18c-3 is in elastic contact with the periphery of the through hole 38. This generates a frictional force between the protruding portion 18c-3 and the periphery of the through hole 38, suppressing the movement of the electronic component body 12 relative to the printed circuit board 3, and therefore the electronic component body 12 does not shift in position relative to the printed circuit board 3. Even if a shift does occur, the amount of shift is small.
  • the suppressing portion 18c may be fixed to the periphery of the through hole 38 using, for example, reflow solder.
  • FIG. 4 is a diagram showing a schematic of the electronic device 100A in the comparative example.
  • the configuration different from the configuration of the electronic device 100 in the embodiment of the present invention will be mainly described, and the same configuration will be assigned the same reference numerals and the description thereof will be omitted.
  • the protrusion 18c-3 resiliently abuts against the periphery of the through hole 38. This generates a frictional force between the protrusion 18c-3 and the periphery of the through hole 38, suppressing movement of the electronic component body 12 relative to the printed circuit board 3. As a result, even if the nut 19 loosens due to the impact when the electronic device 100 is dropped, the electronic component body 12 does not shift in position relative to the printed circuit board 3. This makes it possible to prevent poor contact between the second terminal 16 (coil spring 16A) and the printed circuit board 3.
  • Fig. 5 is a schematic diagram of a part of the electronic device 100 according to the embodiment of the present invention. For ease of explanation, only the first terminal 14, the suppressing portion 18c, the fitting hole 34, and the through hole 38, which are parts of the electronic device 100, are shown.
  • the suppression portion 18c is inserted into the through hole 38 while the suppression member 18 is bent. This causes the protrusion 18c-3 to elastically abut against the periphery of the through hole 38.
  • Figure 5 shows the abutment force F1 when the protrusion 18c-3 abuts against the periphery of the through hole 38, and also shows the reaction force R1 when the periphery of the through hole 38 pushes back against the protrusion 18c-3.
  • each of the two first terminals 14 is inserted into each of the fitting holes 34.
  • a resistance force R1 is generated in the protrusion 18c-3, causing each of the two first terminals 14 to elastically abut against the periphery of the fitting hole 34.
  • Figure 5 shows the abutment force F2 when the first terminal 14 abuts against the periphery of the fitting hole 34, and also shows the resistance force R2 when the periphery of the fitting hole 34 pushes back the first terminal 14.
  • the coil spring 16A only needs to be in contact with the printed circuit board 3 while being compressed in the Y direction, and the suppression portion 18c only needs to be fitted into the through hole 38 from the Y direction, which is the same as the compression direction of the coil spring 16A, making it possible to improve the ease of assembling the electronic component body 12 and the printed circuit board 3.
  • the electronic device 100 in the above embodiment includes an electronic component body 12, a printed circuit board 3, a case 2 that houses the electronic component body 12, mounting screws 17 and nuts 19 that fasten the electronic component body 12 to the case 2, a second terminal 16 having a coil spring 16A that is in electrical contact with the printed circuit board 3 while compressed in the Y direction (up and down direction), and a suppression member 18 that suppresses movement of the electronic component body 12 so that the electronic component body 12 does not move away from the printed circuit board 3 in the Y direction.
  • the electronic device 100 in the above embodiment has a fixed portion 18a that is fixed to the electronic component body 12, and a suppressing portion 18c that is continuous with the fixed portion 18a and suppresses movement of the electronic component body 12 relative to the printed circuit board 3.
  • the suppressing portion 18c suppresses movement of the electronic component body 12, making it possible to suppress the occurrence of misalignment of the electronic component body 12 relative to the printed circuit board 3.
  • the printed circuit board 3 has a through hole 38 penetrating in the Y direction (up-down direction), and the suppression portion 18c resiliently abuts against the periphery of the through hole 38. This generates a frictional force between the periphery of the through hole 38 and the suppression portion 18c, making it possible to suppress movement of the electronic component body 12 relative to the printed circuit board 3.
  • the suppression portion 18c is soldered to the periphery of the through hole 38. This ensures that the electronic component body 12 is not misaligned relative to the printed circuit board 3, thereby improving durability.
  • suppressing member 18 has fixed portion 18a that is fixed to electronic component body 12, and suppressing portion 18c that is continuous with fixed portion 18a and fits tightly into through hole 38.
  • the width of suppressing portion 18c in the Z direction (depth direction) is set to be larger than the diameter of through hole 38 in the Z direction of printed circuit board 3. As a result, suppressing portion 18c fits tightly into through hole 38.
  • the suppression portion 18c is tightly fitted into the through hole 38 and maintains the fitted state.
  • the suppression portion 18c does not come out of the through hole 38, so it is possible to prevent the electronic component body 12 from shifting out of position relative to the printed circuit board 3.
  • the electronic device 100 includes a case 2 and fastening members (mounting screws 17 and nuts 19), and the electronic component body 12 is fixed to the case by the fastening members, but the present invention is not limited to this.
  • the present invention is not limited to this.
  • no threads are formed on the outer circumferential surface of the bearing portion 13, which means that the mounting screws 17 are not required, and the nuts 19 are also not required.
  • the present invention is suitable for use in electronic devices that require prevention of misalignment of electronic components relative to a printed circuit board.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Structures For Mounting Electric Components On Printed Circuit Boards (AREA)

Abstract

La présente invention concerne un dispositif électronique qui comprend : un corps principal de composant électronique ; une carte de circuit imprimé ; une borne qui est équipée d'un ressort hélicoïdal qui est électriquement en contact avec la carte de circuit imprimé dans un état comprimé dans une direction prédéterminée ; et un élément de suppression qui supprime le mouvement du corps principal de composant électronique de telle sorte que le corps principal de composant électronique n'est pas séparé de la carte de circuit imprimé dans la direction prédéterminée. Par exemple, l'élément de suppression comprend : une partie fixe à fixer au corps principal de composant électronique ; et une partie de suppression qui est continue avec la partie fixe et supprime le mouvement du corps principal de composant électronique par rapport à la carte de circuit imprimé.
PCT/JP2024/016210 2023-05-01 2024-04-25 Dispositif électronique Ceased WO2024228357A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2025518134A JPWO2024228357A1 (fr) 2023-05-01 2024-04-25
CN202480028570.3A CN121040215A (zh) 2023-05-01 2024-04-25 电子设备

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2023075722 2023-05-01
JP2023-075722 2023-05-01

Publications (1)

Publication Number Publication Date
WO2024228357A1 true WO2024228357A1 (fr) 2024-11-07

Family

ID=93332938

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2024/016210 Ceased WO2024228357A1 (fr) 2023-05-01 2024-04-25 Dispositif électronique

Country Status (4)

Country Link
JP (1) JPWO2024228357A1 (fr)
CN (1) CN121040215A (fr)
TW (1) TW202502122A (fr)
WO (1) WO2024228357A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100022113A1 (en) * 2008-07-24 2010-01-28 Toshiyasu Ito Connector for connection to a module board
WO2021060188A1 (fr) * 2019-09-27 2021-04-01 東京コスモス電機株式会社 Composant électronique et appareil électronique
WO2022113644A1 (fr) * 2020-11-27 2022-06-02 工機ホールディングス株式会社 Bloc-batterie et dispositif électrique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100022113A1 (en) * 2008-07-24 2010-01-28 Toshiyasu Ito Connector for connection to a module board
WO2021060188A1 (fr) * 2019-09-27 2021-04-01 東京コスモス電機株式会社 Composant électronique et appareil électronique
WO2022113644A1 (fr) * 2020-11-27 2022-06-02 工機ホールディングス株式会社 Bloc-batterie et dispositif électrique

Also Published As

Publication number Publication date
CN121040215A (zh) 2025-11-28
TW202502122A (zh) 2025-01-01
JPWO2024228357A1 (fr) 2024-11-07

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