WO2024252890A1 - Dispositif électronique - Google Patents

Dispositif électronique Download PDF

Info

Publication number
WO2024252890A1
WO2024252890A1 PCT/JP2024/018166 JP2024018166W WO2024252890A1 WO 2024252890 A1 WO2024252890 A1 WO 2024252890A1 JP 2024018166 W JP2024018166 W JP 2024018166W WO 2024252890 A1 WO2024252890 A1 WO 2024252890A1
Authority
WO
WIPO (PCT)
Prior art keywords
insertion hole
electronic device
pressing
electronic component
base end
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.)
Pending
Application number
PCT/JP2024/018166
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
Publication of WO2024252890A1 publication Critical patent/WO2024252890A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/65—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal
    • H01R12/69—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal deformable terminals, e.g. crimping terminals
    • 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
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistors
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits

Definitions

  • the present invention relates to electronic devices.
  • Electronic devices are electrically connected to the printed circuit board via terminals.
  • Patent Document 1 discloses an electronic device that includes an electronic device main body, a terminal having an elastically deformable press-fit portion, and a printed circuit board having an insertion hole, and in which the press-fit portion inserted into the insertion hole presses against the inner peripheral wall of the insertion hole, thereby pressing and fixing the terminal into the insertion hole.
  • the terminal has a flat shape, and the direction in which the terminal extends is the longitudinal direction, and the direction perpendicular to both the longitudinal direction and the plate thickness direction is the lateral direction.
  • a hole is provided at the center of the longitudinal direction and at the center of the lateral direction, and the press-fit portion is formed by widening the hole in both the lateral direction on one side and the lateral direction on the other side, so that the lateral width is wider than the lateral width of the longitudinal end portion.
  • Patent Document 2 discloses an electronic device that includes an electronic device main body, a terminal, and a printed circuit board with an insertion hole, and in which the terminal and the printed circuit board are electrically connected by inserting the terminal into the insertion hole.
  • the terminal has a flat plate shape, with the direction in which the terminal extends being the longitudinal direction and the direction perpendicular to both the longitudinal direction and the plate thickness direction being the transverse direction, and the terminal has a straight portion extending in the longitudinal direction and a curved portion formed by bending the tip portion located further forward than the straight portion into a curved shape.
  • the press-fit portion has a wider width in the short direction perpendicular to the plate thickness direction, and when the terminal is pressed into and fixed in the insertion hole, the press-fit portion is less likely to elastically deform, and the press-fit portion cannot press the inner wall of the insertion hole with sufficient force. For example, if the weight balance of the electronic device body is poor, the terminal may shift relative to the insertion hole, and the electronic device body may easily fall off or shift.
  • the object of the present invention is to provide an electronic device that can prevent the electronic device body from falling off or becoming misaligned.
  • an electronic device comprises: An electronic component body; a printed circuit board having an insertion hole, the inner peripheral wall of the insertion hole exhibiting electrical conductivity; a terminal having a flat plate shape and extending so as to be inserted into the insertion hole with a first direction from the electronic component body side toward the printed circuit board side as an insertion direction; Equipped with The terminal is a first pressing portion pressing the inner peripheral wall from a center side of the insertion hole toward one side in a plate thickness direction of the flat plate shape; A second pressing portion presses the inner peripheral wall from the center side of the insertion hole toward the other side in the plate thickness direction of the flat plate shape.
  • the present invention makes it possible to prevent the electronic device body from falling off or becoming misaligned.
  • FIG. 1 is a front view of an electronic device according to an embodiment of the present invention.
  • FIG. 2 is a side view of the electronic device according to the embodiment of the present invention.
  • FIG. 3 is a diagram showing a schematic diagram of terminals and the like which are part of the electronic device according to the embodiment of the present invention.
  • FIG. 4 is a front view of an electronic device according to a modified example.
  • FIG. 5 is a diagram showing a schematic diagram of terminals and the like which are part of an electronic device in a modified example.
  • FIG. 1 is a front view of an electronic device according to an embodiment of the present invention.
  • an X-axis, a Y-axis, and a Z-axis are depicted.
  • 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”.
  • 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”.
  • FIG. 2 is a side view of an electronic device according to an embodiment of the present invention.
  • electronic device 100 includes electronic component 1, a case (not shown), and a printed circuit board 3.
  • electronic component 1 is a potentiometer that outputs a voltage corresponding to the amount of mechanical displacement of the rotation of an input shaft, and a rotary encoder that converts the amount of mechanical displacement of the rotation of an input shaft into a digital amount.
  • the electronic component 1 has an electronic component body 12 , a bearing portion 13 , an input shaft 15 , and a terminal 16 .
  • 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 Figures 1 and 2.
  • the electronic component 1 has three terminals 16. As shown in FIG. 1, the three 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 terminals 16 extends in the Y direction (up-down direction), which is the direction from the electronic component body 12 side toward the printed circuit board 3 side.
  • the Y direction (up-down direction) in FIG. 1 corresponds to the "first direction" in this disclosure.
  • the printed circuit board 3 has three insertion holes 36 (described later) arranged corresponding to the three terminals 16, respectively.
  • the insertion holes 36 have an inner peripheral wall 36a (described later).
  • the insertion holes 36 penetrate in the vertical direction (Y direction).
  • Each of the three terminals 16 extends so as to be inserted into the insertion hole 36.
  • the three terminals 16 have the same shape as each other.
  • the three insertion holes 36 also have the same shape as each other. In the following explanation, one terminal 16 and one insertion hole 36 corresponding to that one terminal 16 will be explained as a representative of the three terminals 16 and the three insertion holes 36.
  • terminal 16 is made of a conductive spring material.
  • Terminal 16 has a flat plate shape.
  • the flat plate shape has a longitudinal direction in the Y direction (first direction) and a transverse direction in the X direction perpendicular to both the Y direction and the plate thickness direction.
  • the X direction (left-right direction) in FIG. 1 corresponds to the "second direction" of this disclosure.
  • the Z direction (depth direction) in FIG. 1 corresponds to the plate thickness direction.
  • FIG. 3 is a schematic diagram showing terminals and the like that are part of an electronic device in an embodiment of the present invention. Note that the electronic component body is omitted in FIG. 3.
  • the terminal 16 extends in the Y direction (longitudinal direction) from the electronic component body 12 (see FIG. 2) side toward the printed circuit board 3 side.
  • the terminal 16 has a longitudinal center portion 161, a base end portion 162 located closer to the electronic component body 12 side (-Y direction) than the longitudinal center portion 161, and a tip end portion 163 located on the opposite side of the electronic component body 12 side (+Y direction) from the longitudinal center portion 161.
  • the base end portion 162 is fixed to the electronic component body 12.
  • the longitudinal center portion 161 has a slit 17 that extends in the longitudinal direction and divides the longitudinal center portion 161 in the lateral direction. As shown in FIG. 2, the longitudinal center portion 161 is divided by the slit 17 into two portions: a lateral side portion 161R arranged on one lateral side, and a lateral side portion 161L arranged on the other lateral side.
  • the portion 161R on one side in the short direction has a first pressing portion 161R-1 that presses the inner peripheral wall 36a from the center side of the insertion hole 36 toward one side in the plate thickness direction (+Z direction).
  • the first pressing portion 161R-1 has a bent portion 161R-1a that is bent toward one side in the plate thickness direction (+Z direction).
  • the curvature of the bent portion 161R-1a is constant. Note that the curvature of the base end side of the bent portion 161R-1a may be greater than the curvature of the tip end side.
  • the portion 161L on the other side in the short direction has a second pressing portion 161L-2 that presses the inner peripheral wall 36a from the center side of the insertion hole 36 toward the other side in the plate thickness direction (-Z direction).
  • the second pressing portion 161L-2 has a bent portion 161L-2a that is bent toward the other side in the plate thickness direction (-Z direction).
  • the curvature of the bent portion 161L-2a is constant. Note that the curvature of the base end side of the bent portion 161L-2a may be greater than the curvature of the tip end side, similar to the curvature of the base end side of the bent portion 161R-1a.
  • the curvature of the base end side of each of the bent portions 161R-1a and 161L-2a may be greater than the curvature of the tip end side.
  • the curvature of the base end side of the bent portion 161R-1a is made greater than the curvature of the tip end side.
  • the terminal 16 can be considered as a "cantilever beam" with the base end 162 being a fixed end fixed to the electronic component body 12 and the tip end 163 being a free end.
  • the bent portion 161R-1a When the bent portion 161R-1a is inserted into the insertion hole 36, it is elastically deformed (rebounds). The bent portion 161R-1a then presses against the inner circumferential wall 36a due to its restoring force. As the bent portion 161R-1a presses against the inner circumferential wall 36a, the bent portion 161R-1a receives a reaction force from the inner circumferential wall 36a. As a result, a moment load due to the reaction force is applied to the base end 162.
  • the moment load applied to the base end 162 decreases the closer the position receiving the reaction force is to the base end 162. In other words, the closer the position receiving the reaction force is to the base end 162, the more it is possible to limit the moment load applied to the base end 162 to a maximum allowable value or less.
  • the pressing force of the bent portion 161R-1a against the inner peripheral wall 36a can be made larger than the pressing force when the position receiving the reaction force is farther from the base end 162.
  • the position where the bent portion 161R-1a receives the reaction force from the inner peripheral wall 36a can be brought closer to the base end 162, so that the pressing force of the bent portion 161R-1a against the inner peripheral wall 36a can be made larger.
  • the frictional force between the bent portion 161R-1a and the inner peripheral wall 36a increases depending on the magnitude of the pressing force.
  • the curvature of the base end side of the bent portion 161R-1a is made larger than the curvature of the tip end side.
  • the protrusion amount (protrusion amount of the convex portion) and curvature of each of the bent portions 161R-1a and 161L-2a when they are curved toward the inner circumferential wall 36a are set based on the results and evaluations of experiments and simulations.
  • the case accommodates the electronic component body 12.
  • the case is box-shaped with an opening in the +Y direction (upward), and has a bottom wall, a right side wall, a left side wall, a front wall, and a rear wall.
  • the front wall faces the front face 12e of the electronic component body 12 in the Z direction (depth direction).
  • the front wall has an insertion hole (not shown) that passes through in the Z direction (depth direction).
  • a nut (not shown) is screwed onto the bolt.
  • the electronic component body 12 is fastened to the front wall by the bolt and nut.
  • the printed circuit board 3 has three insertion holes 36 arranged corresponding to the three terminals 16.
  • the first pressing portion 161R-1 is in elastic contact with the inner peripheral wall 36a of the insertion hole 36.
  • the first pressing portion 161R-1 is pushed back from the inner peripheral wall 36a, and a frictional force is generated between the first pressing portion 161R-1 and the inner peripheral wall 36a.
  • the second pressing portion 161L-2 is in elastic contact with the inner peripheral wall 36a.
  • the second pressing portion 161L-2 is pushed back from the inner peripheral wall 36a, and a frictional force is generated between the second pressing portion 161L-2 and the inner peripheral wall 36a.
  • the movement of the electronic component body 12 relative to the printed circuit board 3 is suppressed, and it is possible to prevent the electronic component body 12 from falling off or becoming displaced.
  • the amount of displacement is small.
  • the terminals 16 may be fixed to the periphery of the insertion holes 36 using, for example, reflow soldering.
  • the printed circuit board 3 and the electronic component body 12 are positioned so that the three insertion holes 36 and the three terminals 16 face each other in the Y direction.
  • each of the three terminals 16 is inserted into the insertion hole 36.
  • the first pressing portion 161R-1 presses the inner wall 36a from the center of the insertion hole 36 toward one side in the plate thickness direction (+Z direction) due to its restoring force.
  • the second pressing portion 161L-2 is pressed by the inner peripheral wall 36a toward the center of the insertion hole 36 against the restoring force. As a result, the second pressing portion 161L-2 presses the inner peripheral wall 36a from the center of the insertion hole 36 toward the other side in the plate thickness direction (-Z direction) due to the restoring force.
  • the terminals 16 can be inserted into the insertion holes 36 from the Y direction, which improves 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 having an insertion hole 36 and an inner peripheral wall 36a of the insertion hole 36 that exhibits electrical conductivity, and a terminal 16 having a flat plate shape and extending so as to be inserted into the insertion hole 36 with a first direction from the electronic component body 12 side toward the printed circuit board 3 side as an insertion direction, the terminal 16 having a first pressing portion 161R-1 that presses the inner peripheral wall 36a from the center side of the insertion hole 36 toward one side in the plate thickness direction of the flat plate shape, and a second pressing portion 161L-2 that presses the inner peripheral wall 36a from the center side of the insertion hole 36 toward the other side in the plate thickness direction of the flat plate shape.
  • the first pressing portion 161R-1 comes into elastic contact with the inner wall 36a of the insertion hole 36, and the first pressing portion 161R-1 is pushed back from the inner wall 36a, generating a frictional force between the first pressing portion 161R-1 and the inner wall 36a.
  • the second pressing portion 161L-2 comes into elastic contact with the inner wall 36a, and the second pressing portion 161L-2 is pushed back from the inner wall 36a, generating a frictional force between the second pressing portion 161L-2 and the inner wall 36a.
  • the flat shape has a first direction as the longitudinal direction and a second direction perpendicular to both the first direction and the plate thickness direction as the transverse direction
  • the terminal 16 has a longitudinal central portion 161, a base end portion 162 located closer to the electronic component body 12 than the longitudinal central portion 161, and a tip end portion 163 located on the opposite side of the electronic component body 12 from the longitudinal central portion 161, the longitudinal central portion 161 having a slit 17 extending in the longitudinal direction and dividing the longitudinal central portion 161 in the transverse direction
  • each of the first pressing portion 161R-1 and the second pressing portion 161L-2 is a portion divided by the slit 17 and has bent portions 161R-1a, 161L-2a bent in the plate thickness direction.
  • first pressing portion 161R-1 and the second pressing portion 161L-2 to be easily manufactured by, for example, a slitting process for providing a slit 17 in the longitudinal center portion 161 and a bending process for bending the portion 161R on one side in the lateral direction and the portion 161L on the other side in the lateral direction, respectively, thereby reducing the manufacturing cost of the terminal 16.
  • the first pressing portion 161R-1 is disposed on one side of the short side of the area divided into two by the slit 17
  • the second pressing portion 161L-2 is disposed on the other side of the short side of the area divided into two by the slit 17. Furthermore, since each of the first pressing portion 161R-1 and the second pressing portion 161L-2 can be manufactured by bending one side of the short side to one side in the plate thickness direction and bending the other side of the short side to the other side in the plate thickness direction, it becomes possible to manufacture the terminal 16 more easily.
  • the curvature of the base end 162 side of each of the bent portions 161R-1a and 161L-2a is greater than the curvature of the tip end 163 side. This allows the position at which the bent portion 161R-1a receives a reaction force from the inner circumferential wall 36a to be closer to the base end 162, making it possible to increase the pressing force with which the bent portion 161R-1a presses the inner circumferential wall 36a.
  • the electronic component body 12 becomes less likely to fall off or become displaced.
  • the curvature of each of the bent portions 161R-1a and 161L-2a is constant. Also, the curvature of the base end side of each of the bent portions 161R-1a and 161L-2a is greater than the curvature of the tip end side.
  • each of the bent portions 161R-1a, 161L-2a has a corner, a base end side straight portion that extends linearly from the corner toward the base end 162, and a tip end side straight portion that extends linearly from the corner toward the tip end 163, and the angle of the base end side straight portion extending linearly relative to the Y direction (first direction) is greater than the angle of the tip end side straight portion extending linearly relative to the Y direction (first direction).
  • the positions at which the bent portions 161R-1a, 161L-2a receive a reaction force from the inner circumferential wall 36a can be brought closer to the base end 162, making it possible to increase the pressing force with which the bent portions 161R-1a, 161L-2a press against the inner circumferential wall 36a.
  • the electronic component body 12 Since the frictional force between the bent portion 161R-1a and the inner circumferential wall 36a and the frictional force between the bent portion 161L-2a and the inner circumferential wall 36a increase depending on the magnitude of the pressing force, the electronic component body 12 is less likely to fall off or become misaligned.
  • the insertion hole 36 penetrates in the vertical direction (Y direction) and the terminal 16 extends to pass through the insertion hole 36, but the present disclosure is not limited to this.
  • a fitting hole having an opening that opens upward and a bottom surface may be used. In this case, the terminal 16 is inserted through the opening to a position near the bottom surface.
  • Fig. 4 is a front view of the electronic device according to the modified example.
  • Fig. 5 is a schematic diagram showing terminals and the like that are part of the electronic device according to the modified example.
  • the longitudinal center portion 161 is divided into two by the slit 17.
  • a first pressing portion 161R-1 is disposed in the portion 161R on one side in the short direction of the two portions divided by the slit 17, and a second pressing portion 161L-2 is disposed in the portion 161L on the other side in the short direction of the two portions divided by the slit 17.
  • the longitudinal center portion 161 is divided into three by the slit 17.
  • a first pressing portion 161C-1 is disposed in the central portion 161C in the short direction of the three portions divided by the slit 17, and a second pressing portion 161S-2 is disposed in each of the portions 161S on both sides in the short direction of the three portions divided by the slit 17.
  • a support structure similar to "support at both ends” is achieved in which a "central concentrated load” that is a reaction force F1 applied to the central position in the short direction is supported by a reaction force F2 applied to both sides of the central position.
  • the curvature of each of the bent portion 161C-1a of the first pressing portion 161C-1 and the bent portion 161S-2a of the second pressing portion 161S-2 may be constant, and the curvature of the base end side of each of the bent portions 161C-1a and 161S-2a may be greater than the curvature of the tip end side.
  • each of the bent portions 161C-1a, 161S-2a has a corner, a base end side straight portion that extends linearly from the corner toward the base end 162, and a tip end side straight portion that extends linearly from the corner toward the tip end 163, and the angle of the base end side straight portion extending linearly relative to the Y direction (first direction) may be greater than the angle of the tip end side straight portion extending linearly relative to the Y direction (first direction).
  • the present invention is suitable for use in electronic devices that require preventing misalignment of electronic components.

Landscapes

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

Abstract

Ce dispositif électronique comprend un corps de composant électronique, une carte imprimée qui a un trou d'insertion, la paroi circonférentielle interne du trou d'insertion présentant une conductivité électrique, et une borne qui a une forme de plaque plate et s'étend de façon à être insérée dans le trou d'insertion dans une direction d'insertion qui est une première direction du côté corps de composant électronique vers le côté carte imprimée. La borne a une première section de pression pour presser la paroi circonférentielle interne dans la direction allant du côté de la partie centrale du trou d'insertion vers un côté dans la direction de l'épaisseur de la plaque de la forme de plaque plate, et une seconde section de pression pour presser la paroi circonférentielle interne dans la direction allant du côté de la partie centrale du trou d'insertion vers l'autre côté dans la direction de l'épaisseur de la plaque de la forme de plaque plate.
PCT/JP2024/018166 2023-06-08 2024-05-16 Dispositif électronique Pending WO2024252890A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2023094731 2023-06-08
JP2023-094731 2023-06-08

Publications (1)

Publication Number Publication Date
WO2024252890A1 true WO2024252890A1 (fr) 2024-12-12

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ID=93795377

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2024/018166 Pending WO2024252890A1 (fr) 2023-06-08 2024-05-16 Dispositif électronique

Country Status (2)

Country Link
TW (1) TW202450180A (fr)
WO (1) WO2024252890A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5163460A (en) * 1974-10-10 1976-06-01 Du Pont Kairobanpin oyobi hoho
JPS593478U (ja) * 1982-06-29 1984-01-10 富士通株式会社 端子構造
JPS62276774A (ja) * 1985-12-11 1987-12-01 ブルンデイ　エレクトラ　エヌ．フア−． コンタクトピン
JP2003077712A (ja) * 2001-09-03 2003-03-14 Alps Electric Co Ltd 回転型可変抵抗器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5163460A (en) * 1974-10-10 1976-06-01 Du Pont Kairobanpin oyobi hoho
JPS593478U (ja) * 1982-06-29 1984-01-10 富士通株式会社 端子構造
JPS62276774A (ja) * 1985-12-11 1987-12-01 ブルンデイ　エレクトラ　エヌ．フア−． コンタクトピン
JP2003077712A (ja) * 2001-09-03 2003-03-14 Alps Electric Co Ltd 回転型可変抵抗器

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TW202450180A (zh) 2024-12-16

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