JP2600974Y2 - Electronic clock with sensor - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic timepiece with a sensor.

[0002]

2. Description of the Related Art As shown in FIG.
Is fixed to the timepiece case with the screw 13 via the sensor holding plate 5, and the coil spring 12 establishes conduction with the circuit board 4.

[0003]

However, when a plurality of sensors are to be mounted in an electronic timepiece, the conventional method may be diverted as it is, but in this case, there are the following problems. (1) Since each of the plurality of sensors is fixed, the number of components such as a holding plate, a conductive member between the sensor and the circuit board, and screws is increased.

[0004] (2) Since a plurality of sensors are separately fixed, the number of fixing portions is increased, the space is taken up in a plane, and the size of the timepiece is increased.

(3) The conducting structure for conducting from each sensor to the circuit board becomes complicated. (4) The increase in the number of parts and the complexity of the conduction structure cause a problem that the number of assembling steps up, the cost up, and the planar size of the timepiece increase.

[0006]

SUMMARY OF THE INVENTION Therefore, the present invention solves these problems. To this end, (1) at least two or more small sensors for measuring different environmental data, and A watch case having an attachment portion, a means for fixing the sensor to the watch case, a circuit board incorporated in the watch case, and a conductive member for establishing electrical continuity between the circuit board and the sensor. In the electronic timepiece having the above structure, the fixing means is constituted by a single plate member arranged to overlap the plurality of sensors in a plane and a screw for fixing the plate member to the watch case. And

(2) The sensor fixing means sandwiches the conductive member and the circuit board, and an electrode of the conductive member and an electrode of the circuit board are in contact with each other.

(3) An electrode provided on the conduction member for establishing conduction with the circuit board is arranged near a screw of the fixing means.

(4) The sensor, the conductive member,
The circuit board is arranged so as to overlap in a plane.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view of a sensor section showing one embodiment of the present invention, and FIG. 2 is a plan view of FIG. 1 excluding a circuit board and the like. Here, as one embodiment, a structure in which two sensors are attached to an electronic timepiece will be described.

A first sensor 1 and a second sensor 2
Are mounted by soldering on a flexible circuit board 3 which is a conduction member for establishing electrical conduction between the terminal electrodes 1a and 2a of the respective sensors and the electrodes of the circuit board of the timepiece movement.

The other end of the pattern starting from the sensor mounting portion of the flexible circuit board 3 is arranged around a hole 3a of the flexible circuit board, and comprises an electrode 3b for conducting with the electrode of the circuit board 4 of the movement. Have been. In this embodiment, since the number of electrodes of the first and second sensors 1 and 2 is six in total, the holes 3a of the flexible substrate are provided.
Are formed around the three electrodes 3b, but the shape and number of these electrodes are not limited to these. Also, the hole shape of the flexible substrate is not limited to this, and the hole may be a notch.

The first sensor 1 and the second sensor 2 mounted on the flexible circuit board as described above are screwed on the sensor holding plate 5 to the watch case 7 with the screws 6a and 6b. It is fixed in each hole. At this time, between the watch case 7, the first sensor 1, and the second sensor 2, a waterproof packing 8,
When the sensor 9 is disposed and the sensors 1 and 2 are fixed via the sensor holding plate 5 with the screws 6a and 6b, the packing is elastically deformed and the waterproofness is maintained. That is, by fixing one sensor holding plate 5 to the timepiece case with two screws 6a and 6b, the first sensor 1 and the second sensor 2 are fixed.
The two sensors are fixed to the watch case 7 at the same time, and the structure is such that the waterproofness is maintained.

A hole 5a is formed in the sensor holding plate 5 in such a shape as to escape the terminal electrodes 1a and 2a of the sensors 1 and 2, respectively. This hole shape is not limited to this, and may be, for example, a notch instead of a hole.

A hole 5a provided in the sensor holding plate
In addition to preventing the contact between the sensor holding plate 5 and the sensor terminal electrode, the electrode 3b for establishing conduction with the electrode of the movement circuit board of the flexible circuit board is connected to the sensor holding plate 5 by the sensor. It is intended to be positioned in the opposite direction to 1 and 2. That is, the electrode 3b of the flexible circuit board is connected to the hole 5 of the sensor holding plate.
a, the sensor holding plate 5 is disposed on the side opposite to the side on which the sensors 1 and 2 are disposed, and the hole 3a of the electrode portion is flush with the screw hole 5b of the sensor holding plate 5 Are positioned so as to overlap each other. This positioning is performed by positioning holes 3c formed in the flexible circuit board 3,
3d, a positioning dowel 7a formed in the watch case,
7b is engaged.

On the other hand, electrodes (not shown) are formed on the circuit board 4 of the movement at positions opposed to the six electrodes 3b of the flexible circuit board, and the electrodes of the circuit board and the electrodes 3b of the flexible circuit board are formed. Contact with the sensors 1 and 2 and the movement circuit board 4
Can be electrically conducted.

Actually, as described above, the movement in which the circuit board 4 is incorporated is incorporated into the place where the flexible circuit board is incorporated as shown in FIG. The electrodes on the circuit board make contact. Further, screw tightening is performed to ensure conduction between the electrodes. Here, the screw 6b serves to secure the electrical continuity as described above and also serves to fix the sensors 1 and 2. In other words, the conducting part is fixed with one screw, and the sensor is also fixed.

The components held between the screw 6b and the watch case are the sensor holding plate 5, the flexible circuit board 3, the movement circuit board 4, and the circuit holding plate 10.
The circuit holding plate 10 functions to prevent loosening of the screw.

Further, the other screw 6a of the conductive portion has a structure for holding only the sensor pressing plate 5, and the sensors 1, 2 and the sensor pressing plate 5 until the screw 6b on the conductive portion side is tightened. Also works for temporary fixing.

The flexible circuit board, which is a conductive member between the sensor and the movement circuit board, is arranged so as to overlap the circuit board in a planar manner, and has a structure in which the plane size of the watch body is made smaller.

The fixing structure of the sensor and the conduction structure between the movement and the sensor have been described based on one embodiment. However, the number of sensors, the number of screws, and the like are not limited thereto.

[0023]

According to the present invention, the following effects can be obtained.

(1) Since the number of components such as holding plates and screws for fixing a plurality of sensors and conductive members between the sensors and the circuit board are minimized, the number of assembly steps and the cost are reduced. .

(2) Since it is not necessary to fix a plurality of sensors separately, the number of fixing portions is reduced, and moreover, the fixing of the sensor and the conduction between the sensor and the circuit board are shared by one screw. It has a very compact and simple fixing and conducting structure, which has the effect of reducing the number of assembling steps and the size of the watch.

(3) Since the plurality of sensors, the conductive member, and the circuit board are arranged so as to overlap in a plane, the size of the clock body can be reduced.

As described above, according to the present invention, the simple and compact structure reduces the number of assembling steps, reduces costs, facilitates handling, reduces the size of the watch body, etc.
It has a great effect.

[Brief description of the drawings]

FIG. 1 is a sectional view of a sensor unit according to the present invention.

FIG. 2 is a plan view seen from below, excluding a circuit board and the like in FIG. 1;

FIG. 3 is a plan view of a sensor and a conductive member according to the present invention.

FIG. 4 is a plan view of a sensor holding plate according to the present invention.

FIG. 5 is a sectional view of a sensor unit according to a conventional technique.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 1st sensor 1a Terminal electrode of 1st sensor 2 2nd sensor 2a Terminal electrode of 2nd sensor 3 Flexible circuit board 3a Screw hole of flexible circuit board 3b Electrode of flexible circuit board 3c, 3d Flexible circuit board Positioning hole 4 Circuit board 5 Sensor holding plate 5a Sensor holding plate terminal relief hole 5b Sensor holding plate screw hole 6a, 6b Screw 7 Watch case 7a, 7b Dowel for positioning flexible circuit board of watch case 8, 9 Waterproof packing 10 Circuit Holding plate 11 Sensor 12 Conducting coil spring 13 Screw

Claims (4)

(57) [Scope of request for utility model registration] 1. A small sensor for measuring at least two or more different environmental data, a watch case provided with a mounting portion for the sensor, means for fixing the sensor to the watch case, and the watch case In an electronic timepiece composed of a circuit board incorporated therein and a conducting member that establishes electrical conduction between the circuit board and the sensor, the sensor fixing means is disposed so as to overlap the plurality of sensors in a plane. An electronic timepiece with a sensor, comprising: a single plate member; and screws for fixing the plate member to the watch case. 2. A small sensor, a watch case having a mounting portion for the sensor, a means for fixing the sensor to the watch case, a circuit board incorporated in the watch case, In an electronic timepiece constituted by a conducting member that establishes electrical conduction with a sensor, a fixing means of the sensor sandwiches the conducting member and the circuit board, and an electrode of the conducting member and an electrode of the circuit board. An electronic timepiece with a sensor, characterized by contact with electrodes. 3. An electronic timepiece according to claim 2, wherein an electrode provided on said conductive member for conducting with said circuit board is arranged near a screw of said fixing means. With electronic clock. 4. The electronic timepiece according to claim 2, wherein the sensor, the conductive member, and the circuit board are arranged so as to overlap in a plane.