JP2024106691A - Terminal boards, switch devices, electronic devices and electronic clocks - Google Patents

Abstract

To achieve good switching by reducing the tilt of a terminal board.SOLUTION: A switch device 10 has a substrate 2, a terminal board 5 that contacts an electrode 22 of the substrate 2 and is assembled to a base member 1, and a switch plate spring 35 that contacts the terminal board 5 and becomes conductive with the substrate 2 when pressed, and the terminal board 5 has a first and a second fastening portion 54 and 57 that are fastened to the base member 1 and the first and second fastening portions 54 and 57 are located at a distance from each other.SELECTED DRAWING: Figure 4

Description

This invention relates to a terminal board, a switch device, an electronic device, and an electronic watch.

Conventionally, there is known a switch device (push button switch, "push switch" in Patent Document 1) that is turned on when the button pipe of the push button ("operator" in Patent Document 1) is pushed into the housing (see Patent Document 1, for example). There are also various electronic devices such as watches that are equipped with such a switch device.

There is a demand for electronic devices such as watches to be smaller and thinner. However, as a result, the placement of various parts is limited, making them difficult to press, and when the button pipe of a push button is pressed in, it can be difficult to establish electrical contact with the switch terminal (electrode) on the board.
Therefore, a terminal board may be provided to expand the range over which electrical continuity with the switch electrodes on the board can be achieved when the button pipe is pressed in.

Japanese Utility Model Application Publication No. 05-041036

However, the leaf spring in Patent Document 1 has a structure in which only one end is engaged. Therefore, when such a leaf spring is pressed by the circuit board, the terminal plate may tilt. If the terminal plate tilts, the tip of the button pipe of the push button cannot make good contact with the terminal plate even if it is pushed in, making it impossible to switch, and there is a risk of poor contact.

The present invention is intended to solve these problems, and aims to provide a terminal board that can suppress tilt when installed and achieve good switching, a switch device that can suppress tilt of the terminal board and achieve good switching, and an electronic device and an electronic watch that are equipped with the switch device.

In order to solve the above problems, a switch device according to the present invention comprises:
A substrate;
a terminal plate that contacts the electrode of the substrate and is attached to a base member;
a switch leaf spring that is pressed to come into contact with the terminal plate and establish electrical continuity with the circuit board;
Equipped with
the terminal board has a first locking portion and a second locking portion that are locked to the base member,
The first and second locking portions are spaced apart from each other.

The present invention has the effect of suppressing the inclination of the terminal board when installed, thereby achieving good switching.

FIG. 2 is a schematic side view of the timepiece according to the embodiment. FIG. 2 is a perspective view of the module according to the present embodiment, as viewed from the front surface side. 2 is a perspective view of the module according to the embodiment, seen from the rear surface side. FIG. FIG. 4 is an enlarged perspective view of a main portion of a portion IV surrounded by a dashed line in FIG. 3 . FIG. 2 is a plan view of the terminal board according to the embodiment. FIG. 2 is a perspective view of a terminal board according to the embodiment. 7 is a plan view showing a state in which the terminal board shown in FIGS. 5 and 6 is assembled to a base member. FIG. 5 is a schematic diagram showing the positional relationship between a terminal board and a substrate in the embodiment. FIG. 5 is a schematic diagram showing a state in which a leaf spring of the terminal plate in the embodiment is pressed by a substrate. FIG. FIG. 11 is a plan view showing a state in which a conventional terminal board is attached to a base member. 11 is a schematic diagram showing the positional relationship between the terminal board and the substrate shown in FIG. 10 . 11 is a schematic diagram showing a state in which a leaf spring of the terminal board shown in FIG. 10 is pressed by a substrate. FIG.

[composition]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A terminal board, a switch device, and an electronic device and an electronic timepiece including the switch device according to an embodiment of the present invention will be described with reference to FIGS.
In the embodiment described below, an example will be described in which the electronic device is installed in, for example, a wristwatch-type electronic timepiece (hereinafter referred to as "timepiece 100"). In addition, the following embodiment is subject to various limitations that are technically preferable for implementing the present invention, but the scope of the present invention is not limited to the following embodiment and illustrated example. In the following, the x-direction, y-direction, and z-direction refer to those shown in each figure. In the embodiment, the z-direction is the thickness direction (up-down direction) of the timepiece 100, with the upper side being the front side (viewing side) of the timepiece 100 and the lower side being the back side (non-viewing side) of the timepiece 100.

FIG. 1 is a schematic side view of a timepiece according to this embodiment.
As shown in FIG. 1, a timepiece 100 of this embodiment includes a main case 101.
The main body case 101 is formed in a hollow short column shape. The material from which the main body case 101 is formed is not particularly limited, and it is formed of, for example, a metal material such as titanium or stainless steel (SUS). The material from which the main body case is formed is not limited to those exemplified here. For example, it may be formed of various ceramics or the like. It may also be formed of a hard material such as a hard synthetic resin, for example, a super engineering plastic such as polyarylate (PAR) or an engineering plastic such as polyacetal (POM).

The upper side of the main case 101 (the upper side, front side, viewing side of the timepiece 100 in FIG. 1 ) is closed by a windshield member 102. The windshield member 102 is a transparent member made of, for example, glass or resin.
The bottom side of the main case 101 (the bottom side, back side, non-viewing side of the watch 100 in FIG. 1 ) is closed by a back cover 103. The back cover 103 is made of, for example, the same metals or synthetic resins as the main case 101. The back cover 103 may be formed integrally with the main case 101.

As shown in FIG. 1, band attachment portions 104 for connecting a band 107 to the main case 101 are provided on the outer side of the main case 101 at positions corresponding to the 6 o'clock side and the 12 o'clock side of an analog watch.
A push button 105 is provided as an operation unit on the side of the main body case 101. The push button 105 has a button head 105a exposed to the outside of the main body case 101 and a shaft (button pipe) (not shown) that is attached to the button head 105a and passes through the inside and outside of the main body case 101.
There is no particular limit to the position or number of the push buttons 105. In the example shown in Fig. 1, two push buttons 105 are arranged on the right side of the watch 100, but similar push buttons 105 are also arranged on the left side of the watch 100 (not shown). In addition, the operating unit is not limited to the push buttons 105, and various operating units such as a crown may also be provided.

In this embodiment, a module 110 shown in Figures 2 and 3 is housed inside the main body case 101. The module 110 is an electronic device that includes a switch device 10 (see Figure 4) described later and the like.
Fig. 2 is a perspective view of the module 110 as viewed from the front side, and Fig. 3 is a perspective view of the module 110 as viewed from the back side. Fig. 4 is an enlarged view of part IV shown by a dashed line in Fig. 3. In Fig. 4, in order to illustrate parts that are overlapping and cannot actually be seen, parts arranged on the outside are partially cut out and shown by a dashed double-dashed line.

As shown in FIGS. 2 and 3, the module 110 of this embodiment is configured by assembling a substrate 2, a pressing member 3, etc. to a base member 1 formed in a substantially cylindrical shape.
The base member 1 is made of, for example, various resins and serves as a housing to which the components constituting the module 110 are attached.
A terminal board arrangement portion 11 (see FIG. 4 ) for holding a terminal board 5 is formed on a side surface of the base member 1 at a position where a terminal board 5 (described later) is arranged. Slit portions (a first slit portion 12 and a second slit portion 13, see FIG. 7 ) are formed on both circumferential ends of the terminal board arrangement portion 11.

For example, on the front surface side of the base member 1 (the upper side in Figs. 1 and 2, the side that is the visible side when the module 110 is incorporated into the main body case 101 of the timepiece 100), as shown in Fig. 2, a display unit 71 including a liquid crystal panel or the like and a pointer shaft 72 that constitutes a pointer-type display section are provided. Various pointers (not shown) are attached to the pointer shaft 72. Although not shown, a motor and a gear train mechanism that operate the pointers are appropriately incorporated into the base member 1.
In the example shown in Fig. 1, the timepiece 100 is a hybrid timepiece having both an analog and digital display unit and equipped with the display unit 71 and axis 72 shown in Fig. 2, but the timepiece 100 is not limited to this. For example, the timepiece may have only the display unit 71 without hands and display the time and the like in a digital format, or it may be an analog timepiece with hands and a dial but no display unit 71.

A battery 73 is attached to the back side of the base member 1 (the lower side in Figs. 1 and 2, the side that is not visible when the module 110 is installed in the main body case 101 of the watch 100) as shown in Fig. 3, for example. A board 2 is also provided on the back side of the base member 1. Furthermore, a pressing member 3 is arranged on top of the board 2 on the back side of the base member 1, and fixes the board 2 and the battery 73 to the base member 1.

The board 2 is a plate-shaped member that constitutes an LSI (Large-Scale Integration). Specifically, the board 2 is equipped with various electronic components 21 (examples of electronic components are shown in FIGS. 2 and 3) for performing various operations of the watch 100. The board 2 also has electronic circuits (including electrodes) that connect these electronic components 21. Examples of the electronic components 21 include a microcomputer, an external storage unit (such as a flash memory), a large-capacity capacitor, a clock module related to various functional operations such as communication and measurement, and a quartz oscillator. The board 2 is supplied with power from a battery 73, and operates each of the electronic components 21. For example, the microcomputer counts the time (which may include date information) using a clock signal corresponding to the oscillation of the quartz oscillator. The microcomputer also causes the display screen of the display unit 71 to display the time, etc. The board 2 may be a laminated board having multiple layers. As shown in FIGS. 2 and 4, electrodes 22 (see FIGS. 2 to 4) for switches are appropriately exposed on the surface and side surfaces of the board 2.

The pressing member 3 is a conductive member formed of, for example, various metal materials, and is provided on the back surface side of the base member 1 .
The pressing member 3 is arranged on the back surface of the base member 1 and includes a plate-shaped planar portion 31 that covers the substrate 2, and a side portion 32 that extends from the outer peripheral edge of the planar portion 31 to cover the side of the base member 1.
A locking claw portion 15 is provided on a side surface of the base member 1, and a locking hole 33 is formed in a side surface portion 32 of the pressing member 3 at a position corresponding to the locking claw portion 15. The locking hole 33 of the pressing member 3 is locked to the locking claw portion 15 of the base member 1, whereby the pressing member 3 is fixed to the base member 1 with the substrate 2 or the like sandwiched between the pressing member 3 and the base member 1.
There is no particular limitation on the positions and the number of the locking claws 15 and the locking holes 33. From the viewpoint of stably fixing the pressing member 3 to the base member 1, it is preferable to provide, for example, three or more locking claws 15 and locking holes 33 at intervals in the circumferential direction and lock at three or more points.

Furthermore, switch leaf springs 34 and 35 are provided on the side surface portion 32 of the pressing member 3 at positions corresponding to the above-mentioned push button 105 when the module 110 is housed in the main body case 101 .
The switch leaf springs 34, 35 are for detecting the pressing action of the push button 105 (the action of pressing the button head 105a). The switch leaf springs 34, 35 have leaf spring bodies 34a, 35a and contact parts 34b, 35b, respectively. The leaf spring bodies 34a, 35a are disposed in positions where at least the tip of a shaft (not shown) can come into contact with the leaf springs 34a, 35a when the push button 105 is pressed (pressed). When the push button 105 is not pressed, the shaft may or may not be in contact with the switch leaf springs 34, 35.

When the push button 105 is operated (pressed) and the shaft is pushed into the main body case 101, the tip of the shaft comes into contact with at least the leaf spring bodies 34a, 35a, and pushes them toward the center of the module 110. Accordingly, the contact parts 34b, 35b are also pushed toward the center of the module 110. As a result, the contact parts 34b, 35b of the switch leaf springs 34, 35 come into direct or indirect contact with the electrode 22 of the board 2, resulting in a conductive state. When the switch leaf springs 34, 35 are conductive with the electrode 22 of the board 2, the operation (pressing) of the push button 105 is detected by the LSI configured on the board 2 described above, and an operation corresponding to the operation of the push button 105 is performed.

2 and 3, in the switch leaf spring 34, the electrode 22 exposed on the side surface of the substrate 2 is disposed in front of the contact portion 34b that is pushed in. Therefore, when the leaf spring body 34a is pressed by the shaft, the contact portion 34b falls toward the substrate 2 and comes into direct contact with the electrode 22.
4, in the switch leaf spring 35, the contact portion 35b is located away from the side surface of the substrate 2. Therefore, even if the leaf spring body 35a is pressed in by the shaft, the contact portion 35b cannot be brought into direct contact with the electrode 22.
In Figure 2, the area of the leaf spring body 35a in the switch leaf spring 35 that is pressed by the shaft is designated as the pressing area Ar1 (shown by hatching in Figure 2), and the area corresponding to the contact portion 35b that (indirectly) contacts the electrode 22 of the substrate 2 is designated as the contact area Ar2.

Normally, the shaft of the push button 105 is pushed from the outer surface of the main body case 101 toward the center of the module 110 in a nearly horizontal direction (e.g., a direction perpendicular to the up-down direction in FIG. 1), and abuts against the switch leaf spring (e.g., the leaf spring body 34a of the switch leaf spring 34 in FIG. 2 and FIG. 3) in a nearly vertical direction. In this case, if an electrode 22 is provided on the side of the substrate 2, when the leaf spring body 34a is pressed by the shaft, the contact portion 34b falls toward the substrate 2 and comes into contact with the electrode 22. This allows electrical continuity between the switch leaf spring 34 and the electrode 22.

However, for example, in the case of a push button 105 configured such that the button head 105a is pressed from diagonally above, the shaft also abuts against the leaf spring body from diagonally above. The switch leaf spring 35 corresponds to the push button 105 configured in this way.
In this case, for example, the pressing area Ar1 of the leaf spring body 35a shown in Fig. 2 is pressed from an obliquely upward direction by the shaft. In the switch leaf spring 35 corresponding to the push button 105 having such a configuration, it is preferable that the leaf spring body 35a is also shaped to incline toward the center of the module 110 and is angled to correspond to the pressing angle of the shaft so that the shaft pressed from an obliquely upward direction can be received on a substantially vertical surface. By angling the leaf spring body 35a in this manner, even if the shaft abuts against it from an oblique direction, the tip of the shaft is less likely to slip or shift, and the leaf spring body 35a can be pressed appropriately.

However, when the leaf spring body 35 a is pressed from obliquely above in this manner, it is difficult to tilt the contact portion 35 b to a position where it comes into contact with the side surface of the substrate 2 .
Therefore, in the location having such a configuration (where the switch leaf spring 35 is arranged in this embodiment), a terminal plate 5 is further provided to expand the range in which the contact portion 35b can come into contact with the electrode 22 of the substrate 2.
As shown in FIG. 4, the switch device 10 of this embodiment includes a substrate 2, a switch leaf spring 35, a terminal plate 5, and the like.

Terminal board 5 is a member made of metal or the like, and is attached to terminal board placement portion 11 of base member 1 with at least a portion thereof in contact with electrode 22 of substrate 2 .
Therefore, when the pressing area Ar1 of the leaf spring main body 35a is pressed by the shaft, the contact portion 35b (contact area Ar2 in Figures 2 to 4) comes into contact with the terminal plate 5, and the switch leaf spring 35 can indirectly come into contact with the electrode 22 of the substrate 2 via the terminal plate 5.

Fig. 5 is a plan view of the terminal board in this embodiment as viewed from the bottom (back side) in an installed state (e.g., the state shown in Fig. 2, etc.), and Fig. 6 is a perspective view of the terminal board shown in Fig. 5. Fig. 7 is a plan view showing the state in which the terminal board is arranged in the terminal board arrangement portion of the base member. Note that when the direction perpendicular to the longitudinal direction (y direction in Fig. 5, etc.) of the terminal board 5 is the depth direction (x direction in Fig. 5, etc.), when the module 110 in Figs. 2 and 3 is housed in the main body case 101, the side facing the side of the main body case 101 is the "outside" in the x direction, and the center side of the module 110 (the side where the pointer shaft 72 is provided in Fig. 2) is the "inside" in the x direction.

The terminal plate 5 is formed by performing a bending process or the like on a metal plate.
As shown in FIGS. 5 to 7, the terminal board 5 has a main body 51, a contact leaf spring 521, and the like.

The main body 51 is a linear portion that is arranged along the side of the base member 1 in the terminal board arrangement portion 11 of the base member 1. The shape and the like are not particularly limited, but in this embodiment, the main body 51 has a frame shape with a hollowed-out center as shown in FIG.
A tongue portion 52 is connected to one end (the right side in FIG. 5) of the main body portion 51 in the longitudinal direction (the y direction in FIGS. 5 to 7) that is disposed on the rear surface side of the base member 1 .
The tongue portion 52 is bent “inward” in the x direction at approximately 90 degrees relative to the main body portion 51 , and is disposed on the back surface side of the base member 1 when assembled to the base member 1 .

The tongue portion 52 is provided along the longitudinal direction of the main body portion 51 and includes a contact leaf spring 521 , at least a portion of which comes into contact with the board 2 .
The contact leaf spring 521 extends obliquely downward (the "downward" side in FIGS. 1 to 4) from a base end 521a side (the right side in the y direction in FIG. 5, etc.) to a tip end (free end) 521b side (the left side in the y direction in FIG. 5, etc.) and faces the substrate 2. Then, as shown in FIG. 4, at least the tip end (free end) 521b comes into contact with a switch electrode 22 (shown by diagonal shading in FIG. 4) formed on the substrate 2.

In addition, a first insertion portion 53 is provided on the base end 521a side of the contact leaf spring 521 in the terminal board 5, and a second insertion portion 56 is provided at a position away from the first insertion portion 53 toward the tip end 521b side of the contact leaf spring 521.
In this embodiment, the first insertion portion 53 is provided contiguous to the main body portion 51 at one end side (the right end in the y direction in FIG. 5, etc.) of the terminal board 5, and the second insertion portion 56 is provided contiguous to the main body portion 51 at the other end side (the left end in the y direction in FIG. 5, etc.) of the terminal board 5. Note that the first insertion portion 53 and the second insertion portion 56 are preferably provided separately on the base end portion 521a side and the tip end portion 521b side of the contact leaf spring 521, but the specific positions at which the first insertion portion 53 and the second insertion portion 56 are provided are not limited to those shown here.

The first insertion portion 53 is bent "inward" in the x direction by approximately 90 degrees in a substantially L-shape with respect to the main body portion 51 in the plan view shown in FIG.
A first locking portion 54 is provided adjacent to the edge of the first insertion portion 53 facing the substrate 2. The first locking portion 54 is a tongue piece bent at approximately 90 degrees into an L-shape relative to the first insertion portion 53, and is locked onto the back surface of the base member 1 by inserting the first insertion portion 53 into a first slit portion 12 formed in the base member 1.

5 and other figures, the second insertion portion 56 is bent "inward" in the x direction at a predetermined angle with respect to the main body portion 51 in a plan view. The "predetermined angle" (the bending angle of the second insertion portion 56) is not particularly limited and is set appropriately in accordance with the arrangement and shape of the second slit portion 13 of the base member 1. For example, the second insertion portion 56 may be bent at approximately 90 degrees like the first insertion portion 53.
Further, a second locking portion 57 is provided on the side of the second insertion portion 56 facing the substrate 2. The second locking portion 57 is a tongue piece bent at approximately 90 degrees into an L-shape relative to the second insertion portion 56, and is locked onto the back surface of the base member 1 by inserting the second insertion portion 56 into a second slit portion 13 formed in the base member 1.

6, the first insertion portion 53 and the second insertion portion 56 have protrusions 55, 58 that protrude in the thickness direction of the plate. In this embodiment, the protrusions 55, 58 protrude from the “outer” surfaces of the first insertion portion 53 and the second insertion portion 56.
The first insertion portion 53 and the second insertion portion 56 are ensured to have a thickness equal to or greater than the plate thickness at least at the portions of the convex portions 55, 58. The first slit portion 12 and the second slit portion 13 are slits having a width substantially equal to the plate thickness of the first insertion portion 53 and the second insertion portion 56. Therefore, when the first insertion portion 53 and the second insertion portion 56 having the convex portions 55, 58 are inserted into the slit portions (the first slit portion 12 and the second slit portion 13), the first insertion portion 53 and the second insertion portion 56 are press-fitted and fixed into the slit portions (the first slit portion 12 and the second slit portion 13).

The shape of the terminal board 5 is not limited to the illustrated example.
For example, it is not essential that the main body 51 has a frame shape. The main body 51 may have a plate shape with no hollowed-out central portion. Furthermore, the size and shape of the hollowed-out portion may be appropriately changed as long as the strength can be maintained.
For example, the shapes of the first insertion portion 53 and the second insertion portion 56 are not limited to the illustrated example. The bending angles of the first insertion portion 53 and the second insertion portion 56 with respect to the main body portion 51 are not limited to those shown in the embodiment, and for example, both the first insertion portion 53 and the second insertion portion 56 may be bent at approximately 90 degrees with respect to the main body portion 51. Furthermore, both or either one of the first insertion portion 53 and the second insertion portion 56 may be bent at an acute angle or an obtuse angle with respect to the main body portion 51.
Furthermore, both or either one of the convex portion 55 of the first insertion portion 53 and the convex portion 58 of the second insertion portion 56 may protrude on the “inner” surface (the surface opposite to the illustrated example) of the first insertion portion 53 and the second insertion portion 56. Furthermore, the shape, arrangement, number, etc. of the convex portions 55, 58 are not limited to those in the illustrated example.

[Action]
Next, the operation of the switch device 10 shown in FIGS. 2 and 4 of this embodiment, the module 110 which is an electronic device including the switch device 10, and the timepiece 100 shown in FIG. 1 will be described with reference to FIGS. 8 and 9 etc.
When forming the switch device 10 shown in Fig. 2 and Fig. 4, first, components such as the battery 73 are assembled to the base member 1 as shown in Fig. 3. Also, as shown in Fig. 4, the terminal board 5 is arranged in the terminal board arrangement portion 11 formed on the side surface of the base member 1. At this time, as shown in Fig. 7, the first insertion portion 53 is press-fitted into the first slit portion 12, and the second insertion portion 56 is press-fitted into the second slit portion 13 to be fixed. As a result, the first locking portion 54 and the second locking portion 57 are locked to the back surface of the base member 1.

Next, as shown in Fig. 4, the substrate 2 is placed on the back side of the base member 1. At this time, as shown in Fig. 2 and Fig. 3, the substrate 2 is arranged so that the positions of the switch electrodes 22 correspond to the positions of the push buttons 105 when the module 110 is housed in the main body case 101 shown in Fig. 1. As a result, at least the tip 521b of the contact leaf spring 521 of the terminal board 5 shown in Figs. 5 to 7 comes into contact with the switch electrodes 22 of the substrate 2 shown in Figs. 2 and 3.
2 to 4 is placed on top of the base member 1, and the locking claws 15 of the base member 1 are locked into the locking holes 33 of the locking member 3. As a result, the substrate 2 is sandwiched between the back surface of the base member 1 and the locking member 3, and the substrate 2 is pressed and fixed to the base member 1.

2 and 3, in a state in which the locking claw portion 15 of the base member 1 is locked in the locking hole 33 of the pressing member 3, the switch leaf spring 34 formed on the pressing member 3 is disposed at a position corresponding to the switch electrode 22 formed on the side surface of the board 2. In addition, the switch leaf spring 35 is disposed at a position corresponding to the terminal plate 5.
1, the leaf spring body 34a of the switch leaf spring 34 is pressed by the shaft of the push button 105, and the contact portion 34b comes into contact with the electrode 22 of the circuit board 2, thereby establishing electrical continuity between the switch leaf spring 34 and the circuit board 2. This allows the LSI of the circuit board 2 to detect that the push button 105 has been pressed, and various operations corresponding to the operation of the push button 105 are executed.
When the pressing area Ar1 (see FIG. 2) of the switch leaf spring 35 is pressed by the shaft of the push button 105 and the contact area Ar2 (see FIG. 2, etc.) of the contact portion 35b comes into contact with the terminal board 5, the switch leaf spring 35 and the electrode 22 of the substrate 2 become conductive, and the LSI detects that the push button 105 has been pressed. Then, various operations corresponding to the operation of the push button 105 are executed.

8 and 9 are diagrams showing the positional relationship between the substrate and the terminal board.
8 and 9, when the board 2 is placed on the back side of the base member 1 shown in Figures 2 to 4, the board 2 is placed on the base member 1 shown in Figures 2 to 4 while pressing the contact leaf spring 521 of the terminal board 5. At this time, the contact leaf spring 521, which is a leaf spring, is pressed from the tip end 521b (a pressing force indicated by the downward arrow in Figures 8 and 9 is applied), and a reaction force (a force indicated by the upward arrow in Figure 9) that tends to lift the contact leaf spring 521 upward (upward in Figures 3, 4, 8 and 9, toward the back side of the module 110) is generated on the base end 521a side of the contact leaf spring 521.

However, in the present embodiment, terminal board 5 is also locked onto base member 1 by second locking portion 57 on the side opposite to base end 521a of contact leaf spring 521. Therefore, the force tending to lift terminal board 5 is suppressed by first locking portion 54 on the base end 521a side and second locking portion 57 on the opposite side (tip end 521b side), so terminal board 5 can maintain its position without tilting.
Particularly in this embodiment, the first locking portion 54 is located on one side of the pressed portion (pressing area Ar1) of the switch leaf spring 35, and the second locking portion 57 is located on the other side of the pressed portion (pressing area Ar1) of the switch leaf spring 35. Therefore, even when the switch leaf spring 35 is pressed and the contact area Ar2 (see FIG. 2, etc.) of the contact portion 35b comes into contact with the terminal plate 5, the terminal plate 5 remains stably locked to the base member 1.

In contrast, Figures 10 to 12 are schematic illustrations of a cantilever structure in which the terminal board 6 is engaged with the slit portion 17 of the terminal board arrangement portion 11 of the base member 1 only by the engaging portion 63 provided on the base end portion 61 side of the contact leaf spring 62.
In this case, when the contact leaf spring 62 is pressed by the substrate 2, a force (indicated by an upward arrow in FIG. 12) that tends to lift the leaf spring upward (upward in FIG. 11 and FIG. 12, toward the back surface of the module 110) is generated on the base end 61 side as a reaction force to the pressing force (indicated by a downward arrow in FIG. 11 and FIG. 12) acting on the leaf spring. If the terminal board 6 has a cantilever structure as shown in FIG. 10 to FIG. 12, the reaction force cannot be withstood, and the locking portion 63 on the base end 61 side comes out of the slit portion 17, for example, and the entire terminal board 6 tilts, as shown in FIG.

If the terminal plate 6 is tilted as shown in Figure 12, even if the push button 105 shown in Figure 1 is pressed and the switch leaf spring 35 is pushed in by the shaft, the contact area Ar2 (shown by the dotted line in Figures 11 and 12) of the contact portion 35b cannot come into contact with the terminal plate 6, resulting in poor conductivity and making it impossible to detect switching.
In this embodiment, the terminal board 5 has a first locking portion 54 and a second locking portion 57 on the base end portion 521a side and the tip end portion 521b side of the contact leaf spring 521, and is locked to the base member 1 at two points. This makes it possible to prevent the terminal board 5 from tilting, and as shown in Figures 8 and 9, when the push button 105 shown in Figure 1 is pressed and the switch leaf spring 35 is pushed in by the shaft, the contact area Ar2 of the contact portion 35b (shown by a two-dot chain line in Figures 8 and 9) comes into contact with the terminal board 5.
Therefore, the switch leaf spring 35 and the switch electrode 22 of the substrate 2 are electrically connected, so that the pressing of the push button 105 can be correctly detected and a switching process can be performed according to the operation.

[effect]
As described above, the switch device 10 in this embodiment includes the board 2 on which the electronic component 21 is mounted, the terminal board 5 which is assembled to the base member 1 and has the contact leaf spring 521 which extends in one direction from the base end 521a and has at least the tip end 521b which contacts the electrode 22 of the board 2,
and a switch leaf spring 35 which is pressed in response to the pressing action of the push button 105 and which, when pressed, comes into contact with the terminal board 5 to establish electrical continuity with the board 2. The terminal board 5 has a first engagement portion 54 which engages with the base member 1 at a base end 521a of the contact leaf spring 521, and a second engagement portion 57 which engages with the base member 1 at a position away from the first engagement portion 54 toward the tip end 521b of the contact leaf spring 521.
This makes it possible to realize a configuration that expands the range over which electrical continuity with the electrode 22 on the substrate 2 side can be achieved when the switch leaf spring 35 is pressed by the shaft, using a minimum number of members and space.
Furthermore, even if the contact leaf spring 521 is pressed by the substrate 2 when the substrate 2 is attached to the base member 1, the reaction force generated against the pressing force can be suppressed at two points, the first locking portion 54 and the second locking portion 57. This makes it possible to prevent the terminal board 5 from floating up and tilting due to the reaction force, and appropriately establishes electrical continuity between the switch leaf spring 35 and the switch electrode 22 of the substrate 2, ensuring good switching.
In addition, the first locking portion 54 and the second locking portion 57 are disposed at a position away from the base end 521a of the contact leaf spring 521 and a position away from the base end 521a toward the tip end 521b. Therefore, even if the tip end 521b of the contact leaf spring 521 is pressed and a strong reaction force is generated, it is possible to effectively suppress the floating caused by the reaction force.

In addition, the contact leaf spring 521 in this embodiment is arranged along the longitudinal direction of the terminal board 5, with the first locking portion 54 being provided on one end side of the terminal board 5 and the second locking portion 57 being provided on the other end side of the terminal board 5.
In this way, by providing the first locking portion 54 and the second locking portion 57, which lock the terminal board 5 to the base member 1, at both ends of the longitudinal direction of the terminal board 5, the reaction force generated by the pressure of the contact leaf spring 521 can be effectively suppressed, thereby stabilizing the terminal board 5.

In addition, the terminal board 5 of this embodiment has a main body portion 51 arranged on the side of the base member 1, and a tongue portion 52 connected to one longitudinal end side of the main body portion 51 and arranged on the other surface side of the base member 1, and the tongue portion 52 includes a contact leaf spring 521.
As a result, the contact leaf spring 521 is supported by the main body 51 and becomes stable.
Further, the main body 51 in this embodiment has a frame shape with a hollowed-out central portion.
This allows the terminal board 5 to be made even lighter.

In addition, the terminal board 5 of this embodiment has a first insertion portion 53 and a second insertion portion 56 that are inserted into the first slit portion 12 and the second slit portion 13 formed in the base member 1, and the first engagement portion 54 and the second engagement portion 57 are engaged with the base member 1 by inserting the first insertion portion 53 and the second insertion portion 56 into the first slit portion 12 and the second slit portion 13.
This makes it possible to lock terminal board 5 to base member 1 simply by inserting first insertion portion 53 and second insertion portion 56 into first slit portion 12 and second slit portion 13 .

Further, the first insertion portion 53 and the second insertion portion 56 are bent at a predetermined angle with respect to the main body portion 51 .
This makes it possible for the first and second insertion portions 53, 56 to be less likely to come off when inserted into the first and second slit portions 12, 13, respectively, and makes them stable.

In this embodiment, the first insertion portion 53 and the second insertion portion 56 have convex portions 55, 58 that protrude in the thickness direction of the plate, and are press-fitted and fixed into the first slit portion 12 and the second slit portion 13.
This allows a thickness equal to or greater than the slit width of the first slit portion 12 and the second slit portion 13 to be secured at least in the portions where the convex portions 55, 58 are provided, and allows the first insertion portion 53 and the second insertion portion 56 to be firmly pressed and fixed into the first slit portion 12 and the second slit portion 13.

Moreover, a module 110 which is an electronic device of the present embodiment includes the switch device 10 shown in the embodiment.
This makes it possible to suppress switching failures resulting from the floating or tilting of the terminal board 5, thereby enabling good switching processing.
In addition, a configuration that can reliably switch even when the shaft of push button 105 is pressed from an oblique direction can be realized with a small number of parts and a relatively simple configuration, which contributes to making the entire module 110 smaller and thinner.

The timepiece 100 of this embodiment also includes the switch device 10 shown in the embodiment.
This realizes a watch 100 that can reliably perform a desired operation by operating the push button 105.
In addition, a configuration that can reliably switch even when the shaft of the push button 105 is pressed from an oblique direction can be realized with few parts and a relatively simple configuration, which contributes to making the entire watch 100 equipped with the switch device 10 smaller and thinner.

[Modification]
Although the embodiment of the present invention has been described above, it goes without saying that the present invention is not limited to such an embodiment, and various modifications are possible without departing from the gist of the present invention.

For example, in order to reduce the reaction force when the contact leaf spring 521 is pressed, it is more effective to arrange the first locking portion 54 and the second locking portion 57 at a certain distance apart, but this is not limited to being provided on both end sides of the terminal board 5.
In addition, as long as the inclination of the terminal board due to the reaction force can be suppressed, the shapes of the first locking portion 54 and the second locking portion 57 are not limited to the illustrated example. Furthermore, a configuration having three or more locking portions may be used.

In the above embodiment, the push button 105 is positioned on the side of the electronic device, but the position of the push button 105 is not limited to the side.
Also, while the push button 105 corresponding to the switch leaf spring 35 is provided on the front side (visible side) of the watch 100 and pressed diagonally from above has been described, the push button 105 may also be provided on the back side (non-visible side) of the watch 100 and pressed diagonally from below. In this case, the shape of the switch leaf spring 35 (particularly the shape of the pressing area Ar1) is changed as appropriate according to the pressing direction by the shaft.
Furthermore, the shape of the push button 105 shown in FIG. 1 is merely an example and is not particularly limited.

In addition, in the above embodiment, an example was given of the electronic device in which the switch device 10 is provided as a module 110 provided in the main body case 101 of the watch 100, and the watch 100 is a wristwatch-type watch, but the electronic device and watch in which the switch device 10 is provided are not limited to this.
For example, the switch device 10 of the present embodiment may be applied to a portable watch that is not worn on the wrist.
Electronic devices may also broadly include devices that are worn or carried by users, such as wrist devices such as smart watches, and devices incorporated into activity meters or vital signs meters.
In addition, the specific configurations, structures, positional relationships, etc. shown in the above embodiment can be appropriately modified without departing from the spirit of the present invention. The scope of the present invention includes the scope of the invention described in the claims and its equivalents.

1 Base member 2 Substrate 3 Pressing member 5 Terminal board 10 Switch device 11 Terminal board arrangement portion 12 First slit portion 13 Second slit portion 22 Electrode 34 Switch leaf spring 35 Switch leaf spring 35a Leaf spring body 35b Contact portion 51 Body portion 52 Tongue portion 53 First insertion portion 54 First locking portion 55 Convex portion 56 Second insertion portion 57 Second locking portion 58 Convex portion 521 Contact leaf spring 100 Watch 101 Body case 105 Push button 110 Module (electronic device)
Ar1: Pressed area Ar2: Contact area

Claims (15)

A substrate;
a terminal plate that contacts the electrode of the substrate and is attached to a base member;
a switch leaf spring that is pressed to come into contact with the terminal plate and establish electrical continuity with the circuit board;
Equipped with
the terminal board has a first locking portion and a second locking portion that are locked to the base member,
The first locking portion and the second locking portion are provided at positions spaced apart from each other.
A switching device comprising: The terminal plate has a contact leaf spring including a base end and a tip end extending from the base end and contacting an electrode of the substrate.
2. The switch device according to claim 1. The first locking portion is provided on the base end side,
The second locking portion is provided closer to the tip portion than the first locking portion.
3. The switch device according to claim 2. The first locking portion is located on one side of a portion of the switch leaf spring that is pressed,
The second locking portion is located on the other side of the pressed portion of the switch leaf spring.
2. The switch device according to claim 1. The substrate is provided with electronic components,
The switch leaf spring is pressed in response to a pressing operation of the push button.
2. The switch device according to claim 1. The contact leaf spring is provided along the longitudinal direction of the terminal board,
The first locking portion is provided on one end side of the terminal board, and the second locking portion is provided on the other end side of the terminal board.
3. The switch device according to claim 2. the terminal board has a first insertion portion and a second insertion portion that are inserted into a slit portion formed in the base member, and the first locking portion and the second locking portion are locked to the base member by inserting the first insertion portion and the second insertion portion into the slit portion.
2. The switch device according to claim 1. The first insertion portion and the second insertion portion have a protrusion protruding in a thickness direction of the plate and are press-fitted and fixed into the slit portion.
8. The switch device according to claim 7. The terminal board has a main body portion disposed on a side surface of the base member;
a tongue portion connected to one end side of the main body in the longitudinal direction and disposed on the other surface side of the base member,
The tongue portion includes the contact leaf spring.
3. The switch device according to claim 2. The main body has a frame shape with a hollowed-out center.
10. The switch device according to claim 9. the terminal board has a first insertion portion and a second insertion portion to be inserted into a slit portion formed in the base member,
The first insertion portion and the second insertion portion are bent at a predetermined angle with respect to the main body portion.
10. The switch device according to claim 9. A main body portion,
a tongue portion connected to one end side of the main body in a longitudinal direction and including a contact leaf spring;
a first engaging portion that is engaged with a first member and is provided on one end side of the main body portion;
a second engaging portion that is engaged with a first member or a second member different from the first member and is provided on the other end side of the main body;
Equipped with
A terminal board characterized in that The terminal board according to claim 12,
A switching device comprising: A switch device comprising the switch device according to any one of claims 1 to 11 and claim 13.
1. An electronic device comprising: A switch device comprising the switch device according to any one of claims 1 to 11 and claim 13.
An electronic watch characterized by:

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