JPH05877Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a battery negative terminal insulation structure in a thin battery watch. In particular, it relates to the fixing direction of the insulating member.

[Prior art]

Conventionally, the insulation structure of the battery negative terminal of a thin battery watch was to wrap the battery negative terminal in a thin insulating plate in order to make the cross-sectional dimensions of the battery and dial as thin as possible, as shown in Utility Model Application No. 58-71977. The structure is such that the battery is placed on top of it. In particular, the load at the time of impact is borne by the dial. However, there are various problems with the ease of assembling and fixing of thin insulating members. Since the members are thin and lack rigidity, after being assembled into a movement, the insulating member may come off due to a slight impact, causing the battery to stop due to the shot. As a countermeasure to this problem, a method has been adopted in which it can be integrated with the negative terminal of the battery, but this increases the number of parts processing steps and significantly reduces yield, which hinders cost reduction, and a stable insulation structure is desired.

〔the purpose〕

The present invention eliminates the above-mentioned drawbacks, and provides a battery negative terminal insulation structure for a thin battery watch, which greatly improves ease of handling of the movement and after-sales service, and enables cost reduction.

〔overview〕

The battery negative terminal insulation structure of the thin battery watch of the present invention includes: a battery mounted on a base plate; a battery negative terminal held in a circuit seat placed on the base plate and in contact with the cathode of the battery; a battery insulating plate disposed between the anode and the battery negative terminal, the battery insulating plate having a hole formed in the center;
A plurality of riding parts formed on an outer peripheral part and held on the base plate, and a plurality of tongue-like protrusions formed on an outer peripheral part on the opposite side of the riding parts and held on the base plate, The battery insulating plate is fixed by sandwiching a part of the plurality of tongue-like protrusions in contact with one surface of the base plate and another part of the plurality of tongue-like protrusions in contact with the other surface of the base plate. It is characterized by

〔Example〕

The present invention will be described in detail below along with examples. In the present invention, an embodiment will be described in which the positive side of the battery is on the opposite side from the dial.

FIG. 1 is a plan view showing an embodiment of the present invention. Reference numeral 1 denotes a battery for power supply of a battery watch, which is composed of a cathode material and an anode electrolyte, and has square rounded portions 1a and 1b from the cross-sectional shape shown in FIG.

The bolt holder 2, which is the positive contact of the battery, has a battery contact part 2a, and is attached to the main plate 5 by a fixing screw 12.
is fixed. Since the battery contact portion 2a has an initial deflection in order to take the contact pressure with the battery, it is at the position indicated by the dashed-dotted line when there is no battery. The cross-sectional shape has a slight protrusion so as to engage with the shoulder radius of the battery, thereby suppressing upward movement of the battery. Further, the spring portion 2b of the bolt holder 2 has a shape larger than the outer diameter of the battery so that the positive terminal spring portion of the bolt holder 2 can be handled even when the battery 1 is present. The battery negative terminal 3 is a tongue-shaped leaf spring with a dowel 3a at the tip, and is always connected to the battery 1.
It has a force that pushes the battery upward and is in contact with the cathode of the battery. The side opposite to the dowel 3a engages with the guide portion 9a and the dowel 9b of the circuit receiving seat 9, and is positioned in the plane direction. Further, it has a bent portion 3b so as to provide contact pressure with the circuit board 11 to which a well-known IC or crystal is attached to establish conduction.

The battery holder 4, which is a fixing member for the purpose of fixing the battery, has a bent part 4a that extends along the outer circumference of the battery in a plane, and is formed by a dowel 9b of the circuit seat 9 and a crystal relief hole 10a of the circuit holder 10. The plane position is determined by The base plate 5 has a screw pin 5a, which functions to position the circuit seat 9 and to fix the battery holder 4 and the circuit holder 10 with fixing screws 13.

Reference numeral 6 denotes a battery insulating plate A, which is a member for insulating the battery negative terminal 3 and the positive electrode of the battery 1, and is made of flexible vinyl fluoride or the like.

The battery insulating plate A6 has a trapezoidal hole 6a in the center,
In addition to enabling conduction between the battery negative terminal 3 and the battery, the plane is guided by the battery plate 5c of the base plate 5, the tongue-like protrusion 6b of the battery insulating plate A6, and the base plate contact portion 6d, and the cross-sectional It is fixed by incorporating the tongue-like protrusion 6c into the main plate side portion 5b from the battery positive side to the dial 8 side. Therefore, the battery insulating plate A6 does not come off or move because the tongue-like protrusions 6b and 6c sandwich the base plate up and down. 7 is battery insulation board B
This prevents a short circuit between the battery negative terminal 3 and the dial plate 8.

The battery insulating plate B7 has a planar shape that can sufficiently enclose the planar shape of the battery negative terminal 3, and
It has a hole 7a that engages with a machined screw pin 5a. Furthermore, a stepped portion 7d is provided to escape the cross-sectional bending of the battery negative terminal 3, thereby improving the ease of assembling the battery negative terminal 3. The base plate contact portion 7b and the slit portion 7c of the battery insulating plate B7 are designed to escape the deflection of the battery negative terminal 3 when the battery is assembled. Therefore, the battery insulating plate A6 and the battery insulating plate B7 are located above and below the battery negative terminal 3, and are fixed to the main plate 5 by their respective roles of insulation and assembly, so that they do not come off or move. . The dial 8 also has the function of receiving the load of the battery 1 together with the slope portion 5d of the main plate 5.
Next, as shown in FIG. 1, battery installation will be explained.

To install the battery 1 from the direction of the arrow, press the battery contact part 2a of the bar holder 2 at the rounded part 1b of the battery 1.
Push in the battery 1 while expanding it in the plane direction. At this time, the upper rounded portion 1a of the battery 1 is inserted under the battery holder 4, so that the battery 1 can be installed smoothly. When the battery 1 is set in the movement, the protruding part of the battery contact part 2a of the bar holder 2 touches the rounded part 1a of the battery 1.
This prevents the battery from popping out upwards. Ultimately, the position is determined by the case back (not shown), which is an exterior component.

When replacing the battery, do not loosen the fixing screw 13 of the battery holder 4.
Alternatively, by expanding the spring portion 2b of the bar holder 2 on the outer periphery of the battery to the side opposite to the battery 1, the battery 1 will pop out due to the acting force of the battery negative terminal 3.

〔effect〕

As described above, according to the present invention, the battery insulating plate has a portion of the plurality of tongue-like protrusions in contact with one surface of the base plate, and another portion of the plurality of tongue-like protrusions on the other surface of the base plate. By making the battery insulating plate come into contact with the base plate, it is sandwiched and fixed, eliminating the need for fixing members to fix the battery insulating plate, eliminating the sub-assembly process for insulating members, and greatly improving ease of assembly. Stability after installation is greatly improved.

Since the insulating material does not move until the battery is installed,
No problems such as stopping due to battery shot,
It has a negative battery terminal insulation structure that is most suitable for thin battery watches.

The insulating plate is positioned in the plane direction by the resting part, and furthermore, at least one of the plurality of tongue-like projections is brought into contact with one surface of the sloped part of the base plate, and the other tongue is brought into contact with the other tongue. By bringing the shaped protrusion into contact with the other surface of the sloped part of the main plate, it can be positioned and fixed in the plane direction and the thickness direction of the watch, so when installing the battery, the insulating plate after installation will not move. do not have.

Therefore, it is possible to prevent problems such as shorts caused by contact between the negative terminal of the battery and the positive electrode of the battery.

Furthermore, since the structure is simple in that the outer peripheral portion of the insulating plate is brought into contact with the base plate and fixed by being sandwiched therebetween, the ease of assembling the insulating plate is greatly improved.

Also, if the insulation board is guided by pin guidance, etc.
Although the shape of the insulating plate becomes complicated, in the present application, since only the tongue-like protrusions are formed on the insulating plate, the shape can be made simple, which can greatly contribute to reducing the number of processing steps.

Furthermore, by fixing the battery negative terminal side of the insulating plate to the base plate and allowing the other side to move in the cross-sectional direction, no pressing force is applied to the battery negative terminal by the insulating plate, so the insulating plate will not be broken by the elastic force of the battery negative terminal, elastic contact with the battery can be ensured, and the elastic force of the battery negative terminal can be easily set.

[Brief explanation of the drawing]

FIG. 1 shows a plan view of an embodiment of the invention. FIG. 2 shows a cross-sectional view of an embodiment of the invention. 1...Battery, 2...Bar holder, 3...Battery negative terminal, 4...Battery holder, 5...Main plate, 6
...Battery insulating board A, 7...Battery insulating board B, 8...
dial.

Claims (1)

[Claims for Utility Model Registration] A battery mounted on a base plate; a battery negative terminal having one end held by a member connected to the base plate and the other end contacting a cathode electrode of the battery; a cathode of the battery and the battery negative terminal; and an insulating plate disposed between the negative terminal of the battery, and a through hole smaller than the battery in which the battery is disposed is formed in the base plate, and a through hole extending outward from the inner circumference of the through hole is formed. The insulating plate is provided with a slanted part such that the thickness of the main plate gradually increases toward the direction, and the insulating plate is formed in the center of the insulating plate so that the tip of the battery negative terminal does not overlap when assembled. an escape hole, a plurality of gripping portions formed on the outer peripheral portion corresponding to the holding portion side of the battery negative terminal and placed on the slope portion of the base plate, and a side opposite to the gripping portions. and a plurality of tongue-like protrusions formed on the outer periphery of the watch and held on the slope of the main plate, and the gripping part is provided with a plurality of tongue-like protrusions that are formed on the main plate when the lead terminal is lifted up without being fixed to the main plate. movable in the thickness direction and positioned in the plane direction by a step formed on the outer periphery of the slope of the through hole of the base plate, and at least one tongue-like projection of the plurality of tongue-like projections. The slope part of the main plate is brought into contact with the other surface of the slope part of the main plate, and the other tongue-like protrusion part is brought into contact with the other surface of the slope part of the main plate, and the slope part is sandwiched between the plane direction and the thickness direction of the watch. A battery negative terminal insulating structure for a thin battery watch characterized by positioning and fixing.