JP7438758B2 - Electronics - Google Patents

Description

The present invention relates to electronic components and electronic equipment.

Conventionally, it is known that soldering is performed to connect terminals of electronic components and printed circuit boards.

When soldering is performed by a soldering robot, equipment costs increase. Further, when soldering is performed by a worker, the soldering work requires many man-hours. Due to the above, there is a problem that the assembly cost increases.

Further, Patent Document 1 includes two contact members arranged to face each other and a coil spring arranged between the two contact members, and both ends of the coil spring are welded to the two contact members with a conductive adhesive. An electronic device is disclosed.

Japanese Patent Application Publication No. 2000-243167

By the way, in the electronic device described in Patent Document 1, when the end of the coil spring is welded to the contact member with a conductive adhesive, the coil spring is held in a predetermined position with a jig, for example, and then welding is performed. This requires a lot of man-hours, just like soldering. This poses a problem in that assembly costs increase.

Further, for example, when an electronic component is subjected to an impact, there is a problem in that a load is applied to a soldered connection part or a welded connection part using a conductive adhesive.

An object of the present invention is to provide an electronic component and an electronic device that can reduce assembly costs and reduce loads on connecting parts.

In order to achieve the above object, the electronic device of the present invention includes:
An electronic device comprising an electronic component and a case housing the electronic component,
The electronic component is
electronic component body,
a terminal extending in a predetermined direction from the electronic component main body and having a retaining portion;
a coil spring that is fitted onto the terminal so as to be in electrical contact with the terminal and is retained by the retaining portion;
Equipped with
The coil spring is in electrical contact with the printed circuit board in a compressed state,
The printed circuit board has a fitting hole whose depth direction is the predetermined direction, and is attached to the case so that the terminal fits into the fitting hole,
The case has an engagement groove whose depth direction is the predetermined direction,
The electronic component has an engaged portion, and is housed in the case so that the engaged portion engages with the engagement groove.
The electronic device in the present invention is
An electronic device comprising an electronic component and a case housing the electronic component,
The electronic component is
electronic component body,
a terminal extending in a predetermined direction from the electronic component main body and having a retaining portion;
a coil spring that is fitted onto the terminal so as to be in electrical contact with the terminal and is retained by the retaining portion ;
Equipped with
The coil spring is in electrical contact with the printed circuit board in a compressed state,
The printed circuit board has a fitting hole whose depth is in the predetermined direction, and is mounted on the case so that an end of the coil spring in the predetermined direction fits into the fitting hole.
The electronic device in the present invention is
An electronic device comprising an electronic component and a case housing the electronic component,
The electronic component is
electronic component body,
a terminal extending in a predetermined direction from the electronic component main body and having a retaining portion;
a coil spring that is fitted onto the terminal so as to be in electrical contact with the terminal and is retained by the retaining portion;
Equipped with
The coil spring is in electrical contact with the printed circuit board in a compressed state,
The printed circuit board has a locked portion,
The electronic component body has a hook portion that locks to the locked portion so that the electronic component body is attached to the printed circuit board,
The printed circuit board and the electronic component body attached to the printed circuit board are attached to the case,
The hook portions are arranged on both sides of the terminal.

According to the electronic component of the present invention, it is possible to reduce the assembly cost and the load on the connection portion.

FIG. 1 is a diagram schematically showing a part of an electronic device according to an embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line AA in FIG. FIG. 3 is a partially enlarged view of the terminal. FIG. 4 is a diagram showing a coil spring that fits around the terminal. FIG. 5 is a diagram showing a coil spring in contact with a printed circuit board in a compressed state in Modification 1. FIG. 6 is a diagram schematically showing a part of an electronic device in Modification 2. FIG. FIG. 7 is a partially enlarged view of FIG. 6. FIG. 8 is a diagram schematically showing a part of an electronic device in Modification 3. FIG. 9 is a sectional view taken along the line BB in FIG. 8.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram schematically showing a part of an electronic device according to an embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line AA in FIG. In FIG. 1, an X-axis, a Y-axis, and a Z-axis are depicted. In FIG. 1, the vertical direction is referred to as the X direction or the longitudinal direction, the upper direction is referred to as the "+X direction", and the lower direction is referred to as the "-X direction". Further, in FIG. 1, the left-right direction is referred to as the Y direction, the right direction is referred to as the "+Y direction", and the left direction is referred to as the "-Y direction". Further, in FIG. 1, the depth direction perpendicular to the plane of the paper is referred to as the Z direction or short direction, the front direction is referred to as the "+Z direction", and the back direction is referred to as the "-Z direction".

A part of electronic device 100 is shown in FIGS. 1 and 2. FIG. The electronic device 100 includes an electronic component 1, a case 2, and a printed circuit board 3. In this embodiment, the electronic component 1 is a potentiometer that outputs a voltage according 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. It is.

The electronic component 1 includes an electronic component main body 12, a terminal 14, and a coil spring 16. Note that in FIGS. 1 and 2, the inside of the electronic component main body 12 is omitted.

The electronic component main body 12 has a bearing portion 13 (corresponding to the “engaged portion” of the present invention) extending in the +Y direction. An input shaft 15 is rotatably supported by the bearing portion 13 .

As shown in FIG. 2, three terminals 14 are arranged in a line in the Z direction. The terminal 14 extends from the electronic component body 12 in the -X direction.

FIG. 3 is a partially enlarged view of the terminal 14. As shown in FIGS. 1 to 3, the terminal 14 is, for example, a flat terminal with the X direction as the long direction, the Y direction as the thickness direction, and the Z direction as the short direction. The terminal 14 has a base end 14a (+X direction end) and a distal end 14b (−X direction end). In the width in the short direction (Z direction), the base end portion 14a is wider than the distal end portion 14b. The base end portion 14a has a retaining portion 17. FIG. 3 shows the retaining portion 17 in an emphasized manner. Further, as shown in FIG. 3, the base end portion 14a has a +X direction end 14c which has the widest width in the Z direction among the base end portions 14a.

The retaining portion 17 has a convex portion 18 that projects in the +Z direction from the +Z direction side edge of the base end portion 14a. Further, the retaining portion 17 has a convex portion 19 that protrudes in the −Z direction from the −Z direction side edge of the base end portion 14a. FIG. 3 shows the distance L between the convex portions 18 and 19.

The −X side edge 18a of the convex portion 18 is inclined in the +X direction with respect to the +Z direction. The +X side edge 18b of the convex portion 18 extends in the +Z direction from the +Z direction side edge of the base end portion 14a. The −X side edge 19a of the convex portion 19 is inclined in the +X direction with respect to the −Z direction. The +X side edge 19b of the convex portion 19 extends in the −Z direction from the −Z direction side edge of the base end portion 14a.

FIG. 4 is a diagram showing the coil spring 16 that is fitted onto the terminal 14. The coil spring 16 has electrical conductivity. Specifically, the coil spring 16 is formed from a conductive material (spring wire). Here, examples of conductive materials include stainless steel, piano wire, phosphor bronze, and alloys thereof. The inner diameter of the coil spring 16 is larger than the width of the proximal end 14a of the terminal 14 in the short direction (Z direction) and smaller than the distance L between the protrusions 18 and 19 (see FIG. 3). The coil spring 16 is fitted onto the terminal 14 so as to be in electrical contact therewith. The coil spring 16 is prevented from falling off by a falling-off preventing portion 17. Specifically, the +X direction end portion 16a of the coil spring 16 is locked to the convex portions 18 and 19. The +X direction end 16a is a fixed end of the coil spring 16.

As shown in FIG. 4, the free length of the coil spring 16 is longer than the length when the coil spring 16 is compressed (see FIG. 2). When the coil spring 16 is retained by the retaining portion 17, the −X direction end portion 16b of the coil spring 16 extends to the position of the tip portion 14b of the terminal 14. The −X direction end portion 16b is a free end of the coil spring 16.

A part of electronic device 100 is shown in FIGS. 1 and 2. FIG. As shown in FIGS. 1 and 2, the case 2 has a bottom wall portion 22 and a peripheral wall portion 24. As shown in FIGS. The case 2 has an opening 26 that opens downward (in the -X direction).

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 (in the −X direction) from the peripheral edge of the bottom wall portion 22. The −X direction edge of the peripheral wall portion 24 is the peripheral edge of the opening 26. The peripheral wall portion 24 has an engagement groove 25 . The engagement groove 25 is a groove whose depth direction is in the X direction. The groove opening of the engagement groove 25 is opened downward (in the -X direction). The groove width of the engagement groove 25 corresponds to the outer diameter of the bearing portion 13.

The printed circuit board 3 is arranged to face the case 2 in the vertical direction (X direction). The printed circuit board 3 is attached to the peripheral wall portion 24 of the case 2 with a plurality of screws (not shown). The printed circuit board 3 is provided with pilot holes (not shown) for screws. The prepared holes are arranged at positions corresponding to the positions of a plurality of screw grooves (not shown) provided in the peripheral wall portion 24 of the case 2. The printed circuit board 3 is mounted with the upper surface 32 facing in the +X direction (upward) so as to close the opening 26.

As shown in FIGS. 1 and 2, the printed circuit board 3 has a fitting hole 34. As shown in FIG. The fitting hole 34 is arranged at a position corresponding to the terminal 14. The fitting hole 34 is a round hole whose depth direction is in the X direction. The fitting hole 34 is, for example, a through hole that penetrates from the upper surface 32 to the lower surface 33 of the printed circuit board 3.

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 tip 14b of the terminal 14 in the short direction (Z direction). Note that the inner diameter of the fitting hole 34 is larger than the thickness of the tip portion 14b of the terminal 14, as shown in FIG.

Next, a case where the coil spring 16 is fitted onto the terminal 14 of the electronic component 1 will be described with reference to FIGS. 3 and 4.

The +X direction end 16a of the coil spring 16 is fitted onto the tip 14b of the terminal 14. Further, the +X direction end portion 16a is moved in the +X direction until it exceeds the −X side edge 18a (slanted edge) of the convex portion 18 and the −X side edge 19a (slanted edge) of the convex portion 19. When the +X direction end 16a moves along the inclined edge, the inner diameter of the +X direction end 16a expands against the restoring force. When the +X direction end portion 16a exceeds the inclined edge, the inner diameter of the +X direction end portion 16a is contracted by the restoring force. As a result, the inner diameter of the +X direction end portion 16a becomes smaller than the distance L between the convex portions 18 and 19, so that the +X direction end portion 16a engages with the +X side edge 18b of the convex portion 18 and the +X side edge 19b of the convex portion 19. Stop. Thereby, the coil spring 16 is prevented from coming off by the protrusions 18 and 19.

Next, the case of assembling the electronic component 1, the case 2, and the printed circuit board 3 will be described with reference to FIGS. 1 and 2.

An electronic component 1 is housed in a case 2. Specifically, the bearing portion 13 of the electronic component 1 is engaged with the engagement groove 25 of the case 2 . Thereby, the electronic component 1 is positioned with respect to the case 2. Since the coil spring 16 is prevented from falling off by the protrusions 18 and 19, it will not fall even if the terminal 14 of the electronic component 1 is directed downward (-X direction), for example. Thereby, the coil spring 16 is held in a state where it is fitted onto the terminal 14. When the coil spring 16 is fitted onto the terminal 14, the +X direction end 16a of the coil spring 16 is in electrical contact with the +X direction end 14c. Note that the coil spring 16 may be in electrical contact with any part of the terminal 14 while being fitted onto the terminal 14 .

Next, the printed circuit board 3 is assembled into the case 2. Specifically, the position of the fitting hole 34 of the printed circuit board 3 and the position of the tip end 14b of the terminal 14 are aligned with each other in the X direction. The case 2 and the printed circuit board 3 are brought close to each other in the X direction so that the tip portion 14b of the terminal 14 fits into the fitting hole 34. The tip portion 14b of the terminal 14 fits loosely into the fitting hole 34. Thereby, the position of the printed circuit board 3 can be adjusted in the Y direction and the Z direction with respect to the case 2 while the tip end portion 14b of the terminal 14 is fitted into the fitting hole 34. Even if there is some misalignment between the tip 14b of the terminal 14 and the fitting hole 34, by adjusting the position of the printed circuit board 3 with respect to the case 2, the pilot hole on the printed circuit board 3 side and Since the screw grooves on the case 2 side can be aligned, the printed circuit board 3 can be screwed to the peripheral wall portion 24 of the case 2.

When assembling the printed circuit board 3 into the case 2, the -X direction end 16b (free end) of the coil spring 16 is electrically in contact with the peripheral edge of the fitting hole 34. When the coil spring 16 comes into contact with the peripheral edge of the fitting hole 34, the coil spring 16 is bent against the restoring force. Thereby, the coil spring 16 is placed between the printed circuit board 3 and the electronic component main body 12 in a compressed state. Note that the spring load of the coil spring 16 is set so that the coil spring 16 and the printed circuit board 3 are stably connected.

The electronic component 1 in the above embodiment includes an electronic component body 12, a terminal 14 extending in the X direction from the electronic component body 12 and having a retaining portion 17, and a terminal 14 that is fitted onto the outside so as to be in electrical contact with the terminal 14. , and a coil spring 16 that is prevented from coming off by the retaining portion 17, and the coil spring 16 is in electrical contact with the printed circuit board 3 in a compressed state.

According to the above configuration, the coil spring 16 is fitted onto the terminal 14 so as to be in electrical contact with the terminal 14, and furthermore, since the coil spring 16 is in electrical contact with the printed circuit board 3, it is necessary to solder the terminal 14 to the printed circuit board 3. No additional work or welding is required. This makes it possible to reduce assembly costs. In addition, since the coil spring 16 is prevented from coming off by the retaining portion and is held in a state where it is fitted onto the terminal 14, the electronic component main body 12 and the coil spring 16 can be handled as one unit, which also reduces assembly costs. It is possible to reduce the

Furthermore, since there is no need to provide solder lands on the printed circuit board 3, it is possible to increase the freedom of wiring. In addition, since the connection part is formed by contact between the coil spring 16 and the printed circuit board 3, when an impact is applied to the electronic component, the coil spring 16 may bend against the restoring force, or the coil spring 16 and the printed circuit board 3 may bend. 3 moves relative to each other against frictional resistance to absorb impact, making it possible to reduce the load on the connecting portion.

Further, in the embodiment described above, the electronic device 100 includes the case 2 that houses the electronic component 1, and the printed circuit board 3 has the fitting hole 34 whose depth direction is in the X direction, and the terminal 14 is fitted into the case 2. It is attached to the case 2 so as to fit into the hole 34. When the printed circuit board 3 is attached to the case 2, the terminals 14 are fitted into the fitting holes 34, and the fitting holes 34 become holes for positioning the printed circuit board 3. From this point of view, the printed circuit board 3 can be easily assembled.

Moreover, since the coil spring 16 is fitted onto the terminal 14, the movement of the coil spring 16 on the YZ plane is restricted, so that adjacent coil springs 16 in the Z direction can be prevented from coming into contact with each other.

Further, in the embodiment described above, the terminal 14 is loosely fitted into the fitting hole 34. As a result, the position of the printed circuit board 3 can be adjusted in the Y direction and the Z direction with respect to the case 2 while the tip portion 14b of the terminal 14 is fitted into the fitting hole 34. Positioning with the substrate 3 becomes easy. From this point of view, it is possible to reduce assembly costs.

In addition, the above-mentioned embodiments are merely examples of implementation of the present invention, and the technical scope of the present invention should not be construed as limited by these. . That is, the present invention can be implemented in various forms without departing from its gist or main features.

<Modification 1>
Modification 1 of this embodiment will be described with reference to FIG. 5. In the description of Modification 1, configurations that are different from those of the above embodiment will be mainly explained, and the same configurations will be given the same reference numerals and the description thereof will be omitted.

In the embodiment described above, the fitting hole 34 is a through hole that penetrates from the upper surface 32 to the lower surface 33 of the printed circuit board 3 (see FIG. 2).

On the other hand, in Modification 1, as shown in FIG. 5, the fitting hole 34 is a through hole closed with an eyelet 35. When the printed circuit board 3 is assembled into the case 2, the -X direction end 16b (free end) of the coil spring 16 is electrically contacted with the eyelet 35. When the coil spring 16 comes into contact with the eyelet 35, the coil spring 16 is bent against the restoring force. Thereby, the coil spring 16 is placed between the printed circuit board 3 and the electronic component body 12 (see FIG. 2) in a compressed state.

In the above embodiment, the retaining portion 17 is the convex portions 18 and 19 (see FIG. 4), but the present invention is not limited to this, and may be a concave portion, for example. Specifically, the recess is recessed in the −Z direction from the +Z direction side edge of the base end portion 14a of the terminal 14, and also recessed in the +Z direction from the −Z direction side edge of the base end portion 14a. When the retaining 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 short direction (Z direction) width of the base end portion 14a. When the coil spring 16 is fitted into the base end 14a, the inner diameter of the +X direction end 16a of the coil spring 16 is expanded against the restoring force, and when the +X direction end 16a of the coil spring 16 is moved to the position of the recess, the restoring force It locks into the recess.

Further, in the above embodiment, the coil spring 16 is formed of a conductive material, but the present invention is not limited to this, and may include, for example, a conductive film. The coating is provided by, for example, plating the material of the coil spring 16. Note that the material of the coil spring 16 and the conductive coating may be any material that can stably electrically connect the coil spring 16 and the printed circuit board 3.

<Modification 2>
Modification 2 of this embodiment will be described with reference to FIGS. 6 and 7. FIG. 6 is a diagram schematically showing a part of an electronic device according to modification 2. FIG. 7 is a partially enlarged sectional view of FIG. 6. In the description of Modification 2, configurations that are different from those of the above embodiment will be mainly explained, and the same configurations will be given the same reference numerals and the description thereof will be omitted.

In the embodiment described above, the printed circuit board 3 is attached to the case 2 (see FIG. 1) so that the terminals 14 fit into the fitting holes 34.

In contrast, in Modification 2, as shown in FIGS. 6 and 7, the −X direction end portion 16b of the coil spring 16 has an extension portion 16c extending in the −X direction. In other words, the coil spring 16 has an extending portion 16c and a coil portion 16d that is above the extending portion 16c and externally fits onto the terminal 14. The printed circuit board 3 is attached to the case 2 so that the extending portion 16c fits into the fitting hole 34. The fitting hole 34 has a conductive coating. That is, the extension portion 16c fits into the fitting hole 34, and the terminal 14 does not fit therein.

The extending portion 16c has a folded portion 16e in which a spring wire, which is the material of the coil spring 16, is folded back into a U-shape.

When the extending portion 16c is fitted into the fitting hole 34, the spring wires of the folded portion 16e are arranged to face each other in the radial direction of the fitting hole 34. As shown in FIG. 7, the spring wire of the folded portion 16e is in contact with or close to the peripheral wall of the fitting hole 34.

For example, if the electronic component 1 receives an impact force in the +Y direction against the printed circuit board 3 due to a drop of the electronic device 100 or vibrations applied to the electronic device 100, the coil portion 16d is fitted onto the terminal 14. , the coil spring 16 moves in the +Y direction together with the terminal 14. On the other hand, since the spring wire of the folded portion 16e contacts or is close to the circumferential wall of the fitting hole 34, the folded portion 16e moves from the circumferential wall of the fitting hole 34 in the -Y direction without moving in the +Y direction. receive a reaction force. Thereby, the coil spring 16 deforms from the coil portion 16d to the folded portion 16e, and by deforming, the impact is alleviated.

In the electronic device 100 according to the second modification, the printed circuit board 3 has a fitting hole 34 whose depth direction is in the will be installed on the As a result, when the electronic component 1 receives an impact force in the +Y direction against the printed circuit board 3, the coil spring 16 has a buffer function of deforming and alleviating the impact. Further, even if the coil spring 16 is deformed, the folded portion 16e remains fitted into the fitting hole 34, thereby restricting movement of the coil portion 16d in the +Y direction. Moreover, since the terminal 14 is not fitted into the fitting hole 34, the terminal 14 does not come into contact with the peripheral wall of the fitting hole 34 during an impact. Thereby, damage to the terminal 14 can be prevented.

<Modification 3>
Modification 3 of this embodiment will be described with reference to FIGS. 8 and 9. FIG. 8 is a diagram schematically showing a part of an electronic device in Modification 3. FIG. 9 is a sectional view taken along the line BB in FIG. 8. In the description of Modification 3, configurations that are different from those of the above embodiment will be mainly described, and the same configurations will be given the same reference numerals and the description thereof will be omitted.

As a procedure for assembling the electronic device 100 in the above embodiment, first, the electronic component 1 and the case 2 are assembled. Next, the case 2 and the printed circuit board 3 are assembled.

On the other hand, in the assembly procedure of the electronic device 100 in Modification 3, first, the electronic component 1 and the printed circuit board 3 are assembled (subassembly). Next, the subassembly product is assembled into the case 2.

Below, a configuration that enables the assembly procedure of electronic device 100 in Modification 3 will be described.

The electronic component main body 12 has two hook parts 12a, as shown in FIG. The hook portions 12a are arranged at the left and right ends of the lower surface (-X direction end surface) of the electronic component main body 12. The hook portions 12a are arranged on both sides of the three terminals 14 in the left-right direction (Z direction).

The hook portion 12a has a shaft portion 12b extending in the −X direction from the lower surface of the electronic component main body 12, and a protrusion portion 12c disposed at the end of the shaft portion 12b in the −X direction. The protruding portion 12c of the hook portion 12a on the left side (+Z direction) has an inclined surface 12d inclined in the left direction (+Z direction) with respect to the −X direction. The protruding portion 12c of the hook portion 12a on the right side (-Z direction) has an inclined surface 12d that slopes in the right direction (-Z direction) with respect to the -X direction. The pitch P1 between the left and right projections 12c is set shorter than the pitch P2 between the left and right locking holes 36 (described later).

As shown in FIG. 9, the printed circuit board 3 has two left and right locking holes 36 (locking portions). The locking hole 36 has a size that allows the protrusion 12c to pass through.

When assembling the electronic component 1 and the printed circuit board 3, the left protrusion 12c is made to correspond to the left locking hole 36, and the right protrusion 12c is made to correspond to the right locking hole 36. Next, the electronic component 1 is moved relative to the printed circuit board 3 in a downward direction (-X direction) against the restoring force of the coil spring 16. As a result, the inclined surface 12d of the left projection 12c comes into contact with the upper hole edge of the left locking hole 36, and the slope 12d of the right projection 12c contacts the upper hole edge of the right locking hole 36. In contact with the edge, the shaft portion 12b of the left hook portion 12a bends to the left against the restoring force, and the shaft portion 12b of the right hook portion 12a bends to the right against the restoring force. . As a result, the pitch P1 between the left and right protrusions 12c widens and becomes equal to the pitch P2 between the left and right locking holes 36. As a result, the left projection 12c passes through the left locking hole 36, and the right projection 12c passes through the right locking hole 36.

When the left and right projections 12c pass through the left and right locking holes 36, the shaft portions 12b of the left and right hook portions 12a are restored, and the pitch P1 between the left and right projections 12c is again adjusted to the left and right locking holes 36. It is shorter than the pitch P2 between 36 and 36. As a result, the left protrusion 12c is locked to the lower hole edge of the left locking hole 36, and the right protrusion 12c is locked to the lower hole edge of the right locking hole 36. . This restricts the movement of the electronic component 1 in the upward direction (+X direction) with respect to the printed circuit board 3. Furthermore, downward movement (-X direction) of the electronic component 1 with respect 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 (subassembly).

In the electronic device 100 according to the third modification, the printed circuit board 3 has a locking hole 36, and the electronic component main body 12 is connected to the locking hole 36 so that the electronic component main body 12 is attached to the printed circuit board 3. The printed circuit board 3 and the electronic component main body 12 attached to the printed circuit board 3 are attached to the case 2, and have a hook portion 12a for fastening. This makes it possible to attach the electronic component 1 to the printed circuit board 3 and then assemble it into the case 2.

INDUSTRIAL APPLICATION This invention is suitably utilized for the electronic device equipped with the electronic component which is required to reduce an assembly cost and the load on a connection part.

1 Electronic component 2 Case 3 Printed circuit board 12 Electronic component main body 12a Hook part 12b Shaft part 12c Projection part 12d Inclined surface 13 Bearing part 14 Terminal 14a Base end part 14b Tip part 14c +X direction end 15 Input shaft 16 Coil spring 16a +X direction end part 16b -X direction end part 16c Extending part 16d Coil part 16e Turned part 17 Retaining part 18, 19 Convex part 18a, 19a -X side edge 18b, 19b +X side edge 22 Bottom wall part 24 Peripheral wall part 25 Engagement groove 26 Opening 32 Upper surface 33 Lower surface 34 Fitting hole 35 Eyelet 36 Locking hole 100 Electronic device

Claims (7)

An electronic device comprising an electronic component and a case housing the electronic component,
The electronic component is
electronic component body,
a terminal extending in a predetermined direction from the electronic component main body and having a retaining portion;
a coil spring that is fitted onto the terminal so as to be in electrical contact with the terminal and is retained by the retaining portion;
Equipped with
The coil spring is in electrical contact with the printed circuit board in a compressed state,
The printed circuit board has a fitting hole whose depth direction is the predetermined direction, and is mounted on the case so that the terminal fits into the fitting hole,
The case has an engagement groove whose depth direction is the predetermined direction,
The electronic component has an engaged portion and is housed in the case so that the engaged portion engages with the engagement groove.
Electronics . the terminal loosely fits into the fitting hole;
The electronic device according to claim 1 . The coil spring includes a coating having conductivity.
The electronic device according to claim 1 or 2 . An electronic device comprising an electronic component and a case housing the electronic component,
The electronic component is
electronic component body,
a terminal extending in a predetermined direction from the electronic component main body and having a retaining portion;
a coil spring that is fitted onto the terminal so as to be in electrical contact with the terminal and is retained by the retaining portion ;
Equipped with
The coil spring is in electrical contact with the printed circuit board in a compressed state,
The printed circuit board has a fitting hole whose depth direction is the predetermined direction, and is attached to the case so that the end of the coil spring in the predetermined direction fits into the fitting hole.
Electronics. The end portion of the coil spring in the predetermined direction has a folded portion in which a spring wire, which is a material of the coil spring, is folded back in a U-shape.
The electronic device according to claim 4 . The spring wires of the folded portion are arranged to face each other in a radial direction of the fitting hole.
The electronic device according to claim 5 . An electronic device comprising an electronic component and a case housing the electronic component,
The electronic component is
electronic component body,
a terminal extending in a predetermined direction from the electronic component main body and having a retaining portion;
a coil spring that is fitted onto the terminal so as to be in electrical contact with the terminal and is retained by the retaining portion;
Equipped with
The coil spring is in electrical contact with the printed circuit board in a compressed state,
The printed circuit board has a locked portion,
The electronic component body has a hook portion that locks to the locked portion so that the electronic component body is attached to the printed circuit board,
The printed circuit board and the electronic component body attached to the printed circuit board are attached to the case,
the hook portions are arranged on both sides of the terminal;
Electronics.

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