JPS6225740Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a battery positive terminal structure of a thin and small battery watch.

In recent years, there has been significant price competition for electronic watches, and prices are continuing to fall, and demands from the market and design have led to trends toward thinner and more compact watches. To deal with this, the following structure has been considered and implemented as a means to reduce processing costs and make the movement thinner and smaller. First of all, it is the most expensive movement,
The main plate, which is the part that determines the planar shape of the movement, has been simplified and downsized. Conventionally, the battery fixing method was to guide the plastic members such as the train gear bridge, circuit holder, or circuit holder and the base plate with the wall of the remaining flesh of a sill that matches the maximum diameter of the battery, and to secure the base plate under the holder such as the circuit holder and the base plate. This is a well-known structure in which the positive terminal of the battery is placed in the total thickness of the battery or in the cross-sectional gap with the flat surface to ensure continuity from the cross-section of the battery. For this reason, the base plate must have enough space to secure the remaining meat to guide and fix the battery, and the height of the wall to guide the straight part of the battery's anode can is required. The main plate has become thicker and thinner,
It was not suitable for miniaturization.

Furthermore, FIGS. 3 and 4 show an example of an assembled plan view and an assembled cross-sectional view of a conventional battery positive terminal structure.
2 is the battery, 2 is the battery positive terminal, 5 is the ground plate, 13 is the stator, 25 is the magnetic core, 4 is the battery insulating plate, 22 is the battery positive terminal screw pin, and 23 is the set screw. When a battery guide part is provided for a spring that connects to the battery with a spring plane that is U-shaped in the thickness direction of the battery as shown in the cross-sectional view of Figure 4, the spring part becomes complicated in cross-section. Because it is not possible to increase the radius of the bend due to planar and cross-sectional space constraints, the thickness of the battery positive terminal was limited, and conventionally it was 10/1.
I could only set the thickness between 00 and 15/100 mm. For this reason, there was a drawback that the rigid body portion for guiding the battery could not be strong enough, making it unsuitable for use.

However, in a battery positive terminal that has a structure that utilizes the planar deflection of the spring rod to establish conduction with the battery from the side of the spring member, the shape of the battery is placed on the rigid body of the battery positive terminal instead of on the side wall of the main plate. A battery guide part is provided to match the battery positive terminal spring part, and the tip of the battery positive terminal spring part is bent at right angles to the longitudinal direction of the spring, so that even if the battery is inserted from directly above, it does not go under the battery and returns to its normal cross-sectional position. By having this, it is possible to reduce the roughness of the base plate, make it thinner, and simplify processing. In addition, by arranging both the battery contact part and the rigid body part of the battery guide part in the plane direction on the side of the main plate external shape with respect to the battery, a gear train bridge etc. can be arranged around the battery to secure the remaining thickness of the main plate. Even if they are not equal, the battery can be placed and fixed to the very edge of the movement's outer shape, making it possible to design an effective layout, and the structure is simple because there is no need to place the positive terminal of the battery, such as the number wheel or stator, away. Therefore, it is also possible to downsize and reduce the number of parts.

The present invention relates to a battery positive terminal structure that is ideal for thin, small electronic watches that adopts the above structure, and provides a structure that is inexpensive, has improved reliability, and enables products that meet market needs. It is something. The battery positive terminal structure of the electronic watch of the present invention includes a base plate, a battery mounted on the base plate, a circuit holder that guides and holds the battery and is mounted on the base plate, and an element of the battery and the circuit holder. In the battery positive terminal structure of an electronic watch having a battery positive terminal for electrical continuity, the battery positive terminal is engaged with a battery positive terminal screw pin and a battery positive terminal pin fixed to the base plate, respectively. a rigid part having a hole; a battery guide part that guides and holds the battery at a position facing the circuit receiver at an end of the rigid part that engages with the battery positive terminal pin; and a battery guide part that is substantially parallel to the rigid part. and a spring part integrally formed, and a reverse slope in a convexly rounded shape bent toward the main plate side at a longitudinal end of the spring part and extending from an end face contacting the battery in a planar direction to the tip. and a battery conduction part, and the battery guide part is disposed adjacent to and on the outer peripheral side of the base plate from the battery conduction part, and the battery guide part has a tip position of the battery conduction part and the battery conduction part. The angle formed by the straight line connecting the center of the battery and the straight line connecting the center of the battery and the center of the base plate is set to be approximately a right angle, and the battery conductive part connects the battery to the center of the side surface of the battery. It is characterized in that it is positioned so as to be pressed above the opposite side to the base plate.

This will be explained in detail below using examples.

Figure 1 is an assembly plan view of this embodiment, Figure 2-a,
Figure 2-b shows an assembled sectional view of this embodiment. 1st
In Figures 2-a and 2-b, 1 is the battery positive terminal, 3 is the battery negative terminal, and 4 is the battery positive terminal.
is the battery insulating plate, 5 is the ground plate, 6 is the battery positive terminal pin, 7 is the circuit holder, 8 is the circuit holder, 9 is the circuit board,
10 is a gear train bridge, 11 is a second gear train bridge, 12 is a second gear bridge, 13 is a stator, 14 is a coil block, 1
5 is a magnetic shield plate, 16 is a circuit block screw pin A, 1
7 is a circuit block screw pin B, 18 is a circuit block screw pin C, 19 is a train wheel foot A, 20 is a train wheel foot B, 21 is a wheel train foot C, 22 is a battery positive terminal screw pin, and 23 is each support. Represents a set screw that is screwed onto the foot.

The battery 1 is guided and fixed in a plane by the gear train bridge 10, the circuit bridge 7, and the battery guide section 2d provided in the battery positive terminal rigid section, and the battery positive terminal spring section 2
The structure is such that the battery 1 is pressed against the circuit receiver 7 from the side direction by the spring force of the part b, the battery is held by the frictional force, and positive conduction is achieved by the pressing spring force of the battery. Battery negative terminal 3 is connected to circuit catch 8
The planar direction is determined by the battery negative terminal guide dowels 8a and 8b, the base plate negative terminal is insulated by the negative terminal hole and the battery insulating frame 4, and the battery negative terminal is connected to the cathode of the battery from the base plate side by the battery negative terminal spring. It has a structure. The circuit receiver 7 has circuit block screw pins A16 and B17 set up on the main plate 5.
Guidance, plane positioning, battery guidance,
It has a structure that can be subjected to shocks such as dropping.
In cross section, it is positioned by the circuit seat 8, the circuit board 9, and the negative battery terminal 3, which are stacked over the total thickness of the base plate 5, and is fixed by screws 13. The gear train bridge 10 has gear train legs A19 and B2.
0 and C21, and has a structure that guides the battery and receives shocks from falling, etc. In cross section, the second support 12 and the second Positioned by the two-wheel train support 11, and fixed by the screw 23, the train support legs A19, B
It has a structure in which it is screwed and fixed to 20. The anti-magnetic plate 15 is guided and positioned in a plane by the circuit block screw pin C18 and the gear train foot C21, and has a shape that escapes the tip of the battery positive terminal spring portion 2b and the coil winding portion, and in cross section: One is the thickness of the collar provided on the gear train foot C21, and the gear train bridge 10.
The position is determined by the remaining thickness of the plate applied to the main plate 5, and the other is determined by the thickness of the stator 13, coil block 14, and circuit board 9. It is fixed to the column support foot C21 with screws. The battery positive terminal 2 is positioned in a plane by a battery positive terminal screw pin 22 erected on the base plate 5 and a battery positive terminal guide pin 6 having a brim, and in cross section, is overlapped with the total thickness of the base plate 5. It is placed on the stator 13 and the coil block (magnetic core) 14, and is positioned and fixed by being screwed onto the battery positive terminal screw pin 22 with a screw 23. Battery positive terminal spring part 2b
In this case, the middle part of the spring part is bent perpendicularly to the longitudinal direction of the spring part on the back cover side, and the battery positive terminal battery conductive part 20 provided at the tip is connected to the anode of the battery 1 in consideration of variations. It is set just above the top of the can. This allows the battery conduction part 2c of the battery positive terminal to come into contact with the upper center of the side surface of the battery anode can, ensuring positive conduction without coming off the battery, and also directing the direction of the spring force of the battery positive terminal to the battery. Pressure is applied in the vertical direction (radial direction) as well as the long sliding surface, ensuring that the battery does not pop out. In addition, the battery conduction part of the battery positive terminal 2 has a bend perpendicular to the longitudinal direction of the spring part on the main plate side, and the bending tip has a contact part with the battery as shown in part 2c in Figure 2-b. A reverse slope is formed from the end face. Now, when the battery is assembled from directly above, the rounded part of the battery anode can twists the spring part within the allowable stress range, and the rounded part of the opposite slope of the battery conduction part of the battery positive terminal is twisted. It slides on the battery insulating plate and is pushed out in the direction of the outer diameter of the battery, and when the battery is installed, it returns to its normal cross-sectional position due to reaction force, and can be provided with the function of returning to normal cross-sectional position with the battery positive terminal alone. As a result, in conventional battery positive terminal springs, the tip of the battery positive terminal spring is normally located inside the outside diameter of the battery due to the deflection, so if the battery is inserted from directly above, it may slip under the battery. Otherwise, there was a risk of the battery popping out and poor continuity. For this reason, it is necessary to leave the wall or flesh of the main plate to prevent it from getting under the battery, and the cross-sectional position of the battery positive terminal is determined by the total thickness of the main plate or the remaining thickness of the base plate. It was not possible to conduct or fix the anode at the appropriate position (above the center of the side of the anode can). However, in this embodiment, even if the battery positive terminal itself is bent to provide a return function, the cross-sectional position of the battery positive terminal can be determined regardless of the total thickness of the base plate and the remaining thickness of the base plate. Continuity can be ensured more reliably. The electronic positive terminal 2 was formed in a part of the rigid body part to match the outer diameter shape of the battery. It has a battery guide part 2d, and the guide part 2b is bent in a Z shape toward the base plate.

The position of the battery guide part 2d is such that the angle between the straight line connecting the center of the battery 1 and the center of the movement and the straight line connecting the center of the battery 1 and the tip of the battery conductive part 2c of the battery positive terminal is 90 degrees or more. It is set so as to be closer to the outer circumference of the movement than the battery conduction portion 2c. Further, the direction of the spring part of the battery positive terminal is such that the battery conduction part 2c is pressed against the battery from the same direction as the battery guide part 2d, and the battery conduction part 2c is pressed against the battery from the same direction as the battery guide part 2d.
Both are placed on the outer periphery of the movement. This eliminates concerns such as when conventional batteries are placed very close to the outer periphery of the movement, it is difficult to guide the battery around the outer periphery of the movement, and it is difficult to receive the force that acts on the outer periphery of the movement from the center. I can do things. In addition, by holding the battery conducting part 2c adjacent to the battery guide part 2d, the spring part 2b can be separated from the wheel train part, so that the train wheel part is not restricted to the battery positive terminal as in the past. The structure can be summarized simply without any problems. Further, the spring portion 2b of the battery positive terminal is connected to the tip of the battery guide portion 2d and the circuit receiver 7.
It is set to be smaller than the outer diameter of the battery 1 in terms of its planar position with respect to the tip 7a of the battery guide part, and has the role of preventing the battery 1 from jumping out in the planar direction. Furthermore, if the battery guide portion 2d of the battery positive terminal is subjected to an impact such as a drop in the plane direction, or if a force is applied that deforms the cross section from the back cover side such as when installing the battery, the battery positive terminal pin 2d It has a structure that receives force through the brim, and has the same function as a conventional uke or main plate wall. This results in
By providing the battery guide part on the rigid part of the battery positive terminal, there is no need to leave a high wall to guide the straight part of the battery anode can as in the past.
There is no need to arrange and guide the receiver around the battery, and the base plate and the receiver can be made thin and simple, and the layout of the battery can be set without being restricted by the receiver, base plate, etc.

Further, the positive terminal is not subject to any restrictions on the cross-sectional thickness, and the thickness can be freely set in consideration of the drop impact of the battery and the contact pressure of the conductive part.
Furthermore, since the spring portion is bent in the plane direction, a sufficient spring portion can be ensured even if the device is made thinner.

Furthermore, in this embodiment, the case where the battery positive terminal battery guide part 2d has a Z-shaped bend on the main plate side has been explained, but this can be done even if there is no bend or with a Z-shaped bend on the back cover side. There is no problem even if the battery is bent into a shape or shape, and the thinner batteries that have been developed in recent years due to thinner movements have a relatively shorter straight part of the anode can due to the thinner total thickness. It is said that this has made it difficult to properly measure and guide the straight part of the battery anode can.
This embodiment aims to solve this problem and improve reliability. In addition, by providing a battery guide part on the rigid part of the battery positive terminal to guide the battery, the battery life can be improved or the battery diameter can be adjusted according to the demands of market users.
If a product with different battery specifications such as battery thickness is required, this can be done simply by changing the inexpensive and simple battery positive terminal without changing the base plate, receiver, etc., making it possible to create a variety of product systems.

As described above, the battery positive terminal of the present invention has a rigid part provided with a battery guide part and a spring part provided with a battery conduction part, and the rigid part is connected to the battery positive terminal screw pin and the battery positive terminal pin. The battery is positioned and fixed to the main plate by the mating engagement holes, and the battery guide part is provided at the end of the rigid part at a position facing the circuit receiver, so that the battery is held in the center of the battery, ensuring reliable battery operation. Can hold guidance. Since the spring part is formed integrally with the rigid body part and approximately parallel to the rigid body part, the required length of the spring part can be secured without changing the spring properties, and in terms of space, it can be housed in a small plane space, making it compact and compact. Can be made thinner. By bending the longitudinal tip of the spring part and forming a convex rounded reverse slope from the end surface in contact with the battery to the tip, it is easier to make contact with the battery conduction part when the battery is installed, and the tip is rounded. This shape prevents damage to the surface of the battery insulating plate located below the battery, and allows the battery conductive part to easily return to its normal cross-sectional position due to reaction force even if the battery conductor is twisted when the battery is inserted. . Therefore, the direction of the spring of the battery conductive portion that presses the side surface of the battery is horizontal, which prevents the battery from floating up.

In addition, when the battery conduction part and the battery guide part are adjacent to each other, the angle formed by the straight line connecting the tip of the battery conduction part and the center of the battery and the straight line connecting the center of the battery and the center of the base plate is approximately a right angle. Since the battery guide part is located on the outer periphery of the main plate from the center of the battery, it is possible to securely hold the battery, and the battery conduction part also makes contact with the battery at the center of the battery, so it can be held securely. Continuity is measured.

Furthermore, since the electrically conductive part is pressed in the plane direction on the upper surface of the side of the battery opposite to the main plate side, the length of contact with the side of the battery in the direction in which the battery comes out is long, which prevents the battery from coming out. The present invention provides a positive battery terminal structure for a battery watch that is suitable for lowering the price of watches, and for main plates that are becoming smaller and thinner, and that can match and cope with battery specifications.

[Brief explanation of the drawing]

FIG. 1 shows an assembled plan view of this embodiment. 2nd-
Figure a shows an assembled sectional view of the entire battery and its surroundings of this embodiment. FIG. 2-b shows an assembled cross-sectional view of the positive conduction section of the battery according to this embodiment. FIG. 3 shows an assembled plan view of a conventional example. FIG. 4 shows an assembled sectional view of a conventional example. 1... Battery, 2... Battery positive terminal, 3... Battery negative terminal, 4... Battery insulating plate, 5... Ground plate, 6... Battery positive terminal pin, 7... Circuit receiver,
8... Circuit catch, 9... Circuit board, 10... Gear train bridge, 11... Second gear train bridge, 12... Second gear bridge, 13
...Stator, 14...Coil block, 15...
...Magnetic plate, 16...Circuit block screw pin A, 1
7... Circuit block screw pin B, 18... Circuit block screw pin C, 19... Gear train foot A, 20...
... Gear train foot B, 21... Gear train foot C, 22... Battery positive terminal screw pin, 23... Set screw, 25
……core.

Claims (1)

[Scope of utility model registration request] a base plate, a battery attached to the base plate, a circuit holder that guides and holds the battery and is attached to the base plate;
In the battery positive terminal structure of an electronic watch, the battery positive terminal has a battery positive terminal that establishes electrical continuity between the battery and the circuit receiver element, wherein the battery positive terminal includes:
a rigid body part having an engagement hole that engages with a battery positive terminal screw pin fixed to the base plate and a battery positive terminal pin, respectively; and a circuit holder at an end of the rigid body part on a side that engages with the battery positive terminal pin. a battery guide portion that guides and holds the battery at opposing positions; a spring portion that is substantially parallel to and integrally formed with the rigid body portion; and a longitudinal end of the spring portion that is bent toward the base plate and that and a battery conduction part having a convex rounded reverse slope formed from the end face in contact with the battery to the tip thereof, and the battery guide part is closer to the outer peripheral part of the base plate than the battery conduction part. and are arranged adjacent to each other, and the angle formed by the straight line connecting the tip end position of the battery conductive part and the center of the battery and the straight line connecting the center of the battery and the center of the base plate is approximately A battery positive terminal of a battery watch, characterized in that the battery conductive part is set to be at a right angle, and the battery conduction part is positioned so as to press the battery from the center of the side surface of the battery above the side opposite to the base plate. structure.