Electronic devices and electronic equipment

Abstract

The electronic device of the present invention can reduce assembly costs and alleviate the load applied to the connection portion. The electronic device comprises: an electronic device body; a terminal extending from the electronic device body in a predetermined direction and having a retaining portion; and a coil spring externally fitted to the terminal so as to be in electrical contact with the terminal. The retaining portion prevents the coil spring from being removed, and the coil spring is in electrical contact with a printed circuit board in a compressed state. For example, the terminal is loosely fitted into a fitting hole of the printed circuit board. Furthermore, for example, the coil spring has a conductive coating.

Description

Technical Field

[0001] The present invention relates to electronic devices and electronic equipment. Background Art

[0002] Conventionally, soldering is known to connect terminals of electronic components to a printed circuit board.

[0003] When soldering is performed by a soldering robot, equipment costs increase. In addition, when soldering is performed by an operator, the soldering operation takes time, which increases assembly costs.

[0004] Patent Document 1 discloses an electronic device including two contact members disposed opposite to each other and a coil spring disposed between the two contact members, wherein both ends of the coil spring are welded to the two contact members using a conductive adhesive.

[0005] Prior art literature

[0006] Patent Literature

[0007] Patent Document 1: Japanese Patent Application Laid-Open No. 2000-243167. Summary of the Invention

[0008] Problems to be solved by the invention

[0009] However, in the electronic device described in Patent Document 1, when the ends of the coil spring are welded to the contact member using a conductive adhesive, the welding is performed while the coil spring is held in a predetermined position using, for example, a jig. This process, like soldering, requires significant labor and increases assembly costs.

[0010] Furthermore, there is a problem that, for example, when an electronic component is subjected to an impact, a load is applied to a connection portion formed by soldering or a connection portion formed by welding with a conductive adhesive.

[0011] An object of the present invention is to provide an electronic device and an electronic apparatus capable of reducing assembly costs and alleviating loads applied to connection portions.

[0012] Solutions to the Problem

[0013] To achieve the above-mentioned objectives, the electronic device of the present invention comprises: an electronic device body; a terminal extending from the electronic device body in a predetermined direction and having a retaining portion; and a coil spring externally embedded in the terminal in a manner electrically contacting the terminal and prevented from falling out by the retaining portion, the coil spring being in electrical contact with a printed circuit board in a compressed state.

[0014] The electronic device of the present invention includes: the electronic component; and a housing for accommodating the electronic component, wherein the printed circuit board has a fitting hole with the predetermined direction as a depth direction and is mounted on the housing so that the terminal fits into the fitting hole.

[0015] Effects of the Invention

[0016] According to the electronic device of the present invention, it is possible to reduce assembly cost and alleviate the load applied to the connection portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a diagram schematically showing a part of an electronic device in an embodiment of the present invention.

[0018] Figure 2 yes Figure 1 AA line cross-section.

[0019] Figure 3 This is a partial enlarged view of the terminal.

[0020] Figure 4 This figure shows a coil spring fitted on the terminal.

[0021] Figure 5 This is a diagram showing a coil spring in a compressed state in contact with a printed circuit board according to Modification 1.

[0022] Figure 6 This is a diagram schematically showing a portion of an electronic device in Modification 2.

[0023] Figure 7 yes Figure 6 A partial enlarged view of .

[0024] Figure 8 This is a diagram schematically showing a portion of an electronic device in Modification 3.

[0025] Figure 9 yes Figure 8 BB line cross-section diagram. DETAILED DESCRIPTION

[0026] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0027] Figure 1 It is a diagram schematically showing a part of an electronic device according to an embodiment of the present invention. Figure 2 yes Figure 1 AA line cross-section. Figure 1 , the X-axis, Y-axis, and Z-axis are depicted. Figure 1In the diagram, the up-down direction is referred to as the X direction or the long side direction, wherein the up direction is referred to as the "+X direction" and the down direction is referred to as the "-X direction". Figure 1 In the diagram, the left and right directions are referred to as the Y direction, wherein the right direction is referred to as the "+Y direction" and the left direction is referred to as the "-Y direction". Figure 1 In the figure, the depth direction perpendicular to the paper surface is called the Z direction or the short side direction, among which the forward direction is called the "+Z direction" and the inward direction is called the "-Z direction".

[0028] Figure 1 and Figure 2 1 shows a portion of an electronic device 100. The electronic device 100 includes an electronic device 1, a housing 2, and a printed circuit board 3. In this embodiment, the electronic device 1 is a potentiometer that outputs a voltage corresponding to the mechanical displacement of the input shaft due to rotation, or a rotary encoder that converts the mechanical displacement of the input shaft due to rotation into a digital value.

[0029] The electronic device 1 includes an electronic device body 12, a terminal 14, and a coil spring 16. Figure 1 and Figure 2 , the interior of the electronic device body 12 is omitted.

[0030] The electronic device body 12 includes a bearing portion 13 (corresponding to the “engaged portion” of the present invention) extending in the +Y direction. The input shaft 15 is rotatably supported by the bearing portion 13 .

[0031] like Figure 2 As shown, three terminals 14 are arranged in a row along the Z direction. The terminals 14 extend from the electronic device body 12 in the -X direction.

[0032] Figure 3 This is a partial enlarged view of terminal 14. Figures 1 to 3 As shown, the terminal 14 is, for example, a flat terminal with the X direction as the long side direction, the Y direction as the plate thickness direction, and the Z direction as the short side direction. The terminal 14 has a base end 14a (+X direction end) and a front end 14b (-X direction end). In the short side direction (Z direction), the width of the base end 14a is wider than the front end 14b. The base end 14a has an anti-slip portion 17. Figure 3 In the figure, the anti-slip portion 17 is emphasized. Figure 3 As shown, the base end portion 14 a has a +X direction end 14 c having the widest width in the Z direction among the base end portions 14 a .

[0033] The anti-slip portion 17 has a convex portion 18 that protrudes from the +Z direction side edge of the base end portion 14a in the +Z direction. In addition, the anti-slip portion 17 has a convex portion 19 that protrudes from the -Z direction side edge of the base end portion 14a in the -Z direction. Figure 3The distance L between the projections 18 , 19 is shown in FIG.

[0034] The -X side edge 18a of the convex portion 18 is inclined toward the +X direction relative to the +Z direction. The +X side edge 18b of the convex portion 18 extends from the +Z side edge of the base end portion 14a in the +Z direction. The -X side edge 19a of the convex portion 19 is inclined toward the +X direction relative to the -Z direction. The +X side edge 19b of the convex portion 19 extends from the -Z side edge of the base end portion 14a in the -Z direction.

[0035] Figure 4 14 is a diagram showing a coil spring 16 externally embedded in the terminal 14. The coil spring 16 is conductive. Specifically, the coil spring 16 is formed of a conductive material (spring wire). Here, the conductive material includes, for example, stainless steel, music wire, phosphor bronze, and alloys thereof. The inner diameter of the coil spring 16 is larger than the width of the base end 14a of the terminal 14 in the short side direction (Z direction) and is larger than the distance L between the protrusions 18 and 19 (see FIG. 14 ). Figure 3 ) is small. Coil spring 16 is externally fitted to terminal 14 in electrical contact with terminal 14. Coil spring 16 is prevented from falling out by retaining portion 17. Specifically, +X-direction end 16a of coil spring 16 is latched onto protrusions 18 and 19. +X-direction end 16a is the fixed end of coil spring 16.

[0036] like Figure 4 As shown, the free length of the coil spring 16 is greater than that in the case where the coil spring 16 is compressed (see Figure 2 ) is long. When the anti-escape portion 17 prevents the coil spring 16 from falling out, the -X direction end 16b of the coil spring 16 extends to the position of the front end 14b of the terminal 14. The -X direction end 16b is the free end of the coil spring 16.

[0037] Figure 1 and Figure 2 FIG. 1 shows a portion of the electronic device 100. Figure 1 and Figure 2 As shown, the housing 2 includes a bottom wall portion 22 and a peripheral wall portion 24. The housing 2 includes an opening portion 26 that opens in the downward direction (-X direction).

[0038] The bottom wall portion 22 has a predetermined area in a plane perpendicular to the vertical direction (X direction). The peripheral wall portion 24 extends downward (-X direction) from the peripheral edge of the bottom wall portion 22. The -X direction end edge of the peripheral wall portion 24 is the peripheral edge of the opening portion 26. The peripheral wall portion 24 has an engaging groove 25. The engaging groove 25 is a groove with the X direction as the depth direction. The notch of the engaging groove 25 opens downward (-X direction). The groove width of the engaging groove 25 corresponds to the outer diameter of the bearing portion 13.

[0039] The printed circuit board 3 is arranged to face the housing 2 in the vertical direction (X direction). The printed circuit board 3 is mounted to the peripheral wall 24 of the housing 2 using multiple screws (not shown). The printed circuit board 3 is provided with threaded bottom holes (not shown). These bottom holes are located at positions corresponding to the positions of multiple screw slots (not shown) provided in the peripheral wall 24 of the housing 2. The printed circuit board 3 is mounted with its upper surface 32 facing the +X direction (upward) and closing the opening 26.

[0040] like Figure 1 and Figure 2 As shown, the printed circuit board 3 has a fitting hole 34. The fitting hole 34 is arranged at a position corresponding to the terminal 14. The fitting hole 34 is a circular hole with the depth direction being the X direction. The fitting hole 34 is, for example, a through hole extending from the upper surface 32 to the lower surface 33 of the printed circuit board 3.

[0041] On the upper surface 32 of the printed circuit board 3, a conductor (not shown) is wired around the periphery of the fitting hole 34. The inner diameter of the fitting hole 34 is larger than the width of the front end portion 14b of the terminal 14 in the short side direction (Z direction). Figure 1 As shown, the inner diameter of the fitting hole 34 is larger than the plate thickness of the front end portion 14 b of the terminal 14 .

[0042] Next, refer to Figure 3 and Figure 4 A case where the coil spring 16 is externally fitted to the terminal 14 of the electronic device 1 will be described.

[0043] The +X-direction end 16a of the coil spring 16 is fitted onto the front end 14b of the terminal 14. Then, the +X-direction end 16a is moved in the +X direction until it passes the -X-side edge 18a (inclined edge) of the protrusion 18 and the -X-side edge 19a (inclined edge) of the protrusion 19. As the +X-direction end 16a moves along the inclined edge, the inner diameter of the +X-direction end 16a expands against the restoring force. Once the +X-direction end 16a passes the inclined edge, the restoring force causes the inner diameter of the +X-direction end 16a to decrease. As a result, the inner diameter of the +X-direction end 16a becomes smaller than the distance L between the protrusions 18 and 19, causing the +X-direction end 16a to be locked against the +X-side edge 18b of the protrusion 18 and the +X-side edge 19b of the protrusion 19. Thus, the protrusions 18 and 19 prevent the coil spring 16 from falling out.

[0044] Next, refer to Figure 1 and Figure 2 A description will be given of a state in which the electronic component 1 , the housing 2 , and the printed circuit board 3 are assembled.

[0045] The electronic device 1 is housed in the housing 2. Specifically, the bearing portion 13 of the electronic device 1 is engaged with the engaging groove 25 of the housing 2. Thus, the electronic device 1 is positioned relative to the housing 2. The protrusions 18 and 19 prevent the coil spring 16 from falling out, so that, for example, even if the terminal 14 of the electronic device 1 is facing downward (-X direction), the coil spring 16 will not fall off. Thus, the coil spring 16 is maintained in a state where it is externally embedded in the terminal 14. In a state where the coil spring 16 is externally embedded in the terminal 14, the +X direction end 16a of the coil spring 16 is electrically in contact with the +X direction end 14c. In addition, the coil spring 16 only needs to be in electrical contact with any part of the terminal 14 in a state where it is externally embedded in the terminal 14.

[0046] Next, the printed circuit board 3 is assembled to the housing 2. Specifically, the position of the fitting hole 34 of the printed circuit board 3 is aligned with the position of the front end 14b of the terminal 14 in the X direction. The housing 2 and the printed circuit board 3 are brought close to each other in the X direction so that the front end 14b of the terminal 14 fits into the fitting hole 34. The front end 14b of the terminal 14 fits loosely into the fitting hole 34. As a result, the position of the printed circuit board 3 can be adjusted relative to the housing 2 in the Y direction and the Z direction with the front end 14b of the terminal 14 fitting into the fitting hole 34. Even if there is a slight misalignment between the front end 14b of the terminal 14 and the fitting hole 34, the position of the printed circuit board 3 can be adjusted relative to the housing 2 to align the bottom hole on the printed circuit board 3 side and the screw groove on the housing 2 side. Therefore, the printed circuit board 3 can be fixed to the peripheral wall 24 of the housing 2 with screws.

[0047] When the printed circuit board 3 is mounted in the housing 2, the -X-direction end 16b (free end) of the coil spring 16 electrically contacts the periphery of the fitting hole 34. This contact between the coil spring 16 and the periphery of the fitting hole 34 causes the coil spring 16 to bend against the restoring force. Consequently, the coil spring 16 is compressed and positioned between the printed circuit board 3 and the electronic device body 12. Furthermore, the spring load of the coil spring 16 is set to ensure a stable connection between the coil spring 16 and the printed circuit board 3.

[0048] The electronic device 1 in the above embodiment includes: an electronic device body 12; a terminal 14 extending from the electronic device body 12 in the X direction and having a retaining portion 17; and a coil spring 16, which is externally embedded in the terminal 14 in a manner that is in electrical contact with the terminal 14 and is prevented from falling out by the retaining portion 17. The coil spring 16 is in electrical contact with the printed circuit board 3 in a compressed state.

[0049] According to the above structure, coil spring 16 is externally embedded in terminal 14 so as to be in electrical contact with terminal 14. Furthermore, since coil spring 16 is in electrical contact with printed circuit board 3, soldering or welding operations for connecting terminal 14 to printed circuit board 3 are unnecessary. This reduces assembly costs. Furthermore, since coil spring 16 is externally embedded in terminal 14 and retained by the retaining portion to prevent it from falling out, electronic device body 12 and coil spring 16 can be handled as a single unit, further reducing assembly costs.

[0050] Furthermore, since solder pads are not required on the printed circuit board 3, the degree of freedom in wiring can be increased. Furthermore, since the connection portion is formed so that the coil spring 16 contacts the printed circuit board 3, when the electronic device is subjected to an impact, the impact can be absorbed by the coil spring 16 bending against the restoring force or by the coil spring 16 and the printed circuit board 3 moving relative to each other against frictional resistance, thereby reducing the load applied to the connection portion.

[0051] Furthermore, in the above embodiment, the electronic device 100 includes a housing 2 for accommodating the electronic device 1, and the printed circuit board 3 has a fitting hole 34 extending in depth in the X direction, and is mounted in the housing 2 such that the terminals 14 fit into the fitting hole 34. When the printed circuit board 3 is mounted in the housing 2, the terminals 14 fit into the fitting hole 34, thereby serving as a positioning hole for the printed circuit board 3. This facilitates assembly of the printed circuit board 3.

[0052] Furthermore, since the coil springs 16 are fitted onto the terminals 14 , movement of the coil springs 16 in the YZ plane is restricted, and thus contact between adjacent coil springs 16 in the Z direction can be prevented.

[0053] Furthermore, in the above embodiment, the terminal 14 is loosely fitted into the fitting hole 34. This allows the position of the printed circuit board 3 to be adjusted relative to the housing 2 in the Y and Z directions while the tip 14b of the terminal 14 is fitted into the fitting hole 34. This facilitates alignment of the housing 2 and the printed circuit board 3. This reduces assembly costs.

[0054] In addition, the above-mentioned embodiments are merely examples of specific implementations of the present invention, and the technical scope of the present invention should not be limited by these embodiments. That is, the present invention can be implemented in various forms within the scope of its gist or main features.

[0055] <Variation 1>

[0056] Reference Figure 5, a modification example 1 of the present embodiment will be described. In the description of the modification example 1, the configurations different from the above embodiment will be mainly described, and the same configurations will be given the same reference numerals and their description will be omitted.

[0057] In the above embodiment, the fitting hole 34 is a through hole that passes from the upper surface 32 to the lower surface 33 of the printed circuit board 3 (see Figure 2 ).

[0058] In contrast, in Modification 1, Figure 5 As shown, the fitting hole 34 is a through hole blocked by a button hole 35. When the printed circuit board 3 is assembled to the housing 2, the -X direction end 16b (free end) of the coil spring 16 is in electrical contact with the button hole 35. As the coil spring 16 contacts the button hole 35, the coil spring 16 bends against the restoring force. As a result, the coil spring 16 is arranged in a compressed state between the printed circuit board 3 and the electronic device body 12 (see FIG. 2 ). Figure 2 )between.

[0059] In the above embodiment, the anti-detachment portion 17 is the convex portions 18 and 19 (see Figure 4 ), however, the present invention is not limited thereto, and for example, it may be a recessed portion. Specifically, the recessed portion is recessed from the +Z direction side edge of the base end portion 14a of the terminal 14 toward the -Z direction, and further, is recessed from the -Z direction side edge of the base end portion 14a toward the +Z direction. In the case where the anti-slip portion 17 is a recessed portion, the inner diameter of the +X direction end portion 16a of the coil spring 16 is made smaller than the width of the base end portion 14a in the short side direction (Z direction). When the coil spring 16 is embedded in the base end portion 14a, the inner diameter of the +X direction end portion 16a of the coil spring 16 is expanded to resist the restoring force, so that the +X direction end portion 16a of the coil spring 16 moves toward the position of the recessed portion, and when it has moved to the position of the recessed portion, it is stuck in the recessed portion due to the restoring force.

[0060] In the above embodiment, coil spring 16 is formed from a conductive material. However, the present invention is not limited thereto. For example, coil spring 16 may also be provided with a conductive coating. For example, the coating may be provided by electroplating the material of coil spring 16. The material and conductive coating of coil spring 16 may be any material or conductive coating that allows for stable electrical connection between coil spring 16 and printed circuit board 3.

[0061] <Variation 2>

[0062] Reference Figure 6 and Figure 7 Modification 2 of this embodiment will be described. Figure 6 This is a diagram schematically showing a portion of an electronic device in Modification 2. Figure 7 yes Figure 6In the description of the second modification, the structures different from those in the above-described embodiment will be mainly described, and the same structures will be given the same reference numerals and their description will be omitted.

[0063] In the above embodiment, the printed circuit board 3 is mounted on the housing 2 in such a manner that the terminals 14 are fitted into the fitting holes 34 (see FIG. Figure 1 ).

[0064] In contrast, in Modification 2, Figure 6 and Figure 7 As shown, the -X-direction end 16b of the coil spring 16 has an extension 16c extending in the -X direction. In other words, the coil spring 16 includes the extension 16c and a coil portion 16d above the extension 16c that is externally engaged with the terminal 14. The printed circuit board 3 is mounted to the housing 2 so that the extension 16c engages with the engagement hole 34. The engagement hole 34 is provided with a conductive coating. In other words, the extension 16c engages with the engagement hole 34, while the terminal 14 does not engage with the engagement hole 34.

[0065] The extending portion 16 c includes a folded portion 16 e formed by folding a spring wire, which is a material of the coil spring 16 , in a U-shape.

[0066] When the extension portion 16c is fitted into the fitting hole 34, the spring wires of the folded portion 16e are arranged so as to face each other in the radial direction of the fitting hole 34. Figure 7 As shown, the spring wire of the folded portion 16 e abuts against or is close to the peripheral wall of the fitting hole 34 .

[0067] For example, if electronic device 100 is dropped or subjected to vibration, causing electronic device 100 to be subjected to an impact force in the +Y direction relative to printed circuit board 3, coil portion 16d is externally fitted to terminal 14, causing coil spring 16 to move in the +Y direction along with terminal 14. Meanwhile, because the spring wire of folded portion 16e abuts or is in close proximity to the peripheral wall of fitting hole 34, folded portion 16e does not move in the +Y direction but instead receives a reaction force in the -Y direction from the peripheral wall of fitting hole 34. Consequently, coil spring 16 deforms from coil portion 16d to folded portion 16e, mitigating the impact.

[0068] In the electronic device 100 of the second modification, the printed circuit board 3 has a fitting hole 34 with the X direction as the depth direction, and is installed in the housing 2 in a manner such that the folded portion 16e of the coil spring 16 fits into the fitting hole 34. Thus, the coil spring 16 has a buffering function of alleviating the impact by deforming when the electronic device 1 is subjected to an impact force in the +Y direction relative to the printed circuit board 3. In addition, even when the coil spring 16 is deformed, the folded portion 16e can be kept in a state of fitting into the fitting hole 34, thereby limiting the movement of the coil portion 16d in the +Y direction. In addition, since the terminal 14 is not fitted into the fitting hole 34, the terminal 14 will not abut against the peripheral wall of the fitting hole 34 when subjected to an impact. Thus, damage to the terminal 14 can be prevented.

[0069] <Variation 3>

[0070] Reference Figure 8 and Figure 9 Modification 3 of this embodiment will be described. Figure 8 This is a diagram schematically showing a portion of an electronic device in Modification 3. Figure 9 yes Figure 8 In the description of the modification 3, the configuration different from the above-described embodiment will be mainly described, and the same configuration will be assigned the same reference numerals and description thereof will be omitted.

[0071] The assembly sequence of the electronic device 100 in the above embodiment is as follows: first, the electronic device 1 is assembled with the housing 2 , and then the housing 2 is assembled with the printed circuit board 3 .

[0072] In contrast, the assembly procedure of the electronic device 100 in the third modification is as follows: first, the electronic component 1 and the printed circuit board 3 are assembled together (subassembly), and then the subassembly is assembled to the housing 2 .

[0073] Next, a configuration that can implement the assembly procedure of the electronic device 100 in the third modification will be described.

[0074] like Figure 9 As shown, the electronic device body 12 has two hooks 12a. The hooks 12a are arranged at the left and right ends of the lower surface (-X direction end surface) of the electronic device body 12. The hooks 12a are arranged on both sides of the three terminals 14 in the left-right direction (Z direction).

[0075] The hook portion 12a includes a shaft portion 12b extending from the lower surface of the electronic device body 12 in the -X direction, and a protrusion 12c disposed at the -X end of the shaft portion 12b. The protrusion 12c of the left (+Z) hook portion 12a includes an inclined surface 12d that is inclined toward the left (+Z) direction relative to the -X direction. The protrusion 12c of the right (-Z) hook portion 12a includes an inclined surface 12d that is inclined toward the right (-Z) direction relative to the -X direction. The pitch P1 between the left and right protrusions 12c is set to be shorter than the pitch P2 between the left and right engaging holes 36 (described later).

[0076] like Figure 9 As shown, the printed circuit board 3 has two left and right latched holes 36 (latched portions). The latched holes 36 have a size that allows the protrusion 12c to pass through.

[0077] When assembling the electronic component 1 and the printed circuit board 3, the left protrusion 12c is aligned with the left latch hole 36, and the right protrusion 12c is aligned with the right latch hole 36. Next, the electronic component 1 is moved downward (in the -X direction) relative to the printed circuit board 3 against the restoring force of the coil spring 16. This causes the inclined surface 12d of the left protrusion 12c to abut against the upper edge of the left latch hole 36, while the inclined surface 12d of the right protrusion 12c also abuts against the upper edge of the right latch hole 36. This causes the shaft 12b of the left hook 12a to bend leftward against the restoring force, while the shaft 12b of the right hook 12a bends rightward against the restoring force. This increases the spacing P1 between the left and right protrusions 12c, becoming equal to the spacing P2 between the left and right latch holes 36. As a result, the left protrusion 12 c passes through the left engaged hole 36 , and the right protrusion 12 c passes through the right engaged hole 36 .

[0078] When the left and right protrusions 12c pass through the left and right latching holes 36, the shafts 12b of the left and right hooks 12a return to their original positions, and the spacing P1 between the left and right protrusions 12c becomes shorter than the spacing P2 between the left and right latching holes 36. As a result, the left protrusion 12c latches onto the lower edge of the left latching hole 36, and the right protrusion 12c latches onto the lower edge of the right latching hole 36. This restricts the upward movement (+X direction) of the electronic component 1 relative to the printed circuit board 3. Furthermore, the downward movement (-X direction) of the electronic component 1 relative to the printed circuit board 3 is restricted by the restoring force of the coil spring 16. As a result, the electronic component 1 and the printed circuit board 3 are assembled together (subassembly).

[0079] In the electronic device 100 of the third modification, the printed circuit board 3 has a latching hole 36, and the electronic device body 12 has a hook portion 12a. The hook portion 12a latches into the latching hole 36 so that the electronic device body 12 is attached to the printed circuit board 3. The printed circuit board 3 and the electronic device body 12 attached to the printed circuit board 3 are then attached to the housing 2. Thus, the electronic device 1 can be assembled to the housing 2 after being attached to the printed circuit board 3.

[0080] This application is based on Japanese patent application (Japanese Patent Application No. 2019-177100) filed on September 27, 2019 and Japanese patent application (Japanese Patent Application No. 2020-000861) filed on January 7, 2020, the contents of which are incorporated herein by reference.

[0081] Industrial Applicability

[0082] The present invention can be suitably used in electronic equipment including electronic components that are required to reduce assembly costs and alleviate loads applied to connection portions.

[0083] Description of Reference Numerals

[0084] 1 Electronic devices

[0085] 2 shell

[0086] 3 printed circuit boards

[0087] 12 Electronic device body

[0088] 12a hook

[0089] 12b shaft

[0090] 12c protrusion

[0091] 12d inclined surface

[0092] 13 bearing part

[0093] 14 terminals

[0094] 14a base end

[0095] 14b front end

[0096] 14c+X direction end

[0097] 15 Input shaft

[0098] 16 coil springs

[0099] 16a+X direction end

[0100] 16b-X direction end

[0101] 16c extension

[0102] 16d coil part

[0103] 16e fold back

[0104] 17 Anti-loss department

[0105] 18, 19 convex part

[0106] 18a, 19a-X side edge

[0107] 18b, 19b+X side edge

[0108] 22 bottom wall part

[0109] 24 surrounding walls

[0110] 25 snap-in slots

[0111] 26 openings

[0112] 32 upper surface

[0113] 33 lower surface

[0114] 34 fitting holes

[0115] 35 buttonholes

[0116] 36 locked hole

[0117] 100 electronic devices

Claims

1. An electronic device comprising an electronic device and a housing for accommodating the electronic device, wherein: The electronic device comprises: Electronic device body; a terminal extending from the electronic device body in a predetermined direction and having a retaining portion; and a coil spring, the coil spring being externally fitted to the terminal in such a manner as to be in electrical contact with the terminal and being prevented from coming out by the anti-falling portion; The coil spring is in electrical contact with the printed circuit board in a compressed state. The printed circuit board has a fitting hole with the predetermined direction as a depth direction, and is mounted on the housing so that the terminal fits into the fitting hole. The housing has a locking groove with the predetermined direction as the depth direction. The electronic component includes an engaged portion extending in a direction perpendicular to the predetermined direction, and is housed in the housing such that the engaged portion engages with the engaging groove.

2. The electronic device according to claim 1, wherein The terminal is loosely fitted in the fitting hole.

3. The electronic device according to claim 1 or 2, wherein: The coil spring includes a conductive coating.

4. The electronic device according to claim 1, wherein The end portion of the coil spring in the predetermined direction has a folded portion formed by folding a spring wire, which is a material of the coil spring, in a U-shape.

5. The electronic device according to claim 4, wherein: The spring wires of the folded portion are arranged to face each other in the radial direction of the fitting hole.

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