JPH0637789U - Battery receiving spring positioning structure - Google Patents

Abstract

(57) [Summary] [Object] The present invention provides a battery receiving spring positioning structure for a wristwatch module, which is space-saving in cross section and plane. [Structure] The shoulder portion 19 formed on the battery receiving spring is inserted and positioned in the groove portion 17 of the plastic base plate 11, and the battery receiving spring 18 is fixed together with the train wheel receiving member 13 by a screw for fixing a part of the train wheel receiving member 13. Fix it. Further, the battery receiving spring 18 is provided with an exposed portion from the circuit board 14 to serve as a test terminal for one pole of the battery. [Effect] Since the dedicated screw for fixing the battery receiving spring 18 is eliminated and the flat portion of the battery receiving spring 18 is received by a part of the train wheel bridge, a dedicated screw or winding stem for fixing the battery receiving spring is provided. It does not require a unique part such as a bridge and a planar or sectional space for the part. Further, since the test terminal of one pole of the battery is formed on a part of the battery receiving spring 18, a planar space for that can be omitted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a positioning structure for a battery receiving spring of an electronic wristwatch module.

[0002]

[Prior art]

 From the past, wristwatches have always been required to be smaller and thinner for reasons of functionality and luxury. For this reason, further miniaturization and thinning are demanded even in the timepiece module. Therefore, even in the structure of the watch module, the shape and the positioning of the components that make up the watch module, the positioning structure, and the method of taking the planar and cross-sectional space, etc. can be made compact and thin within the very limited space of the wristwatch. In order to achieve the goal The battery receiving spring also has an important role of electrically connecting the battery and the circuit board in spite of its simple structure, and depending on the fixing structure, it may have a large impact on the reduction in size and thickness.

A conventional battery receiving spring positioning structure will be described below with reference to the drawings. FIG. 5 is a perspective view showing a conventional battery receiving spring positioning structure. In FIG. 5, 1 is a base plate, 2 is a winding stem receiver, 3 is a battery receiving spring, 3a is an annular end of the battery receiving spring 3, and 3b is a downward folding from the inner peripheral edge of the annular end 3a of the battery receiving panel 3. It shows the fall part formed by bending. Further, 3c is a connecting portion with a battery receiving portion (not shown). Reference numeral 2a is a boss formed on the winding stem receiver 2, and 2b is a concentric circular groove formed on the outer periphery of the boss 2a. Further, 4 is a circuit board, 5 is a pressing plate, and 6 is a tube.

In this structure, an annular groove portion 2b is provided on the outer periphery of the joining portion between the winding stem receiver 2 and the tube 6, and the annular end portion 3a of the battery receiving spring is inserted into the groove so that a planar position is obtained. I am making arrangements.

[0005]

According to the above structure, the winding stem receiver 2 requires a certain thickness or more to form the annular groove 2b, and the positioning structure for preventing the battery receiving spring 3 from rotating is provided. It must be located relatively far away. Also, a special screw for fixing the battery receiving spring 3 is required, so a planar space is required. In addition, since a special component such as the winding receiver 2 is required, it is necessary to secure a cross-sectional space, which is a big problem in pursuing downsizing and thinning.

The present invention has been made to solve the above-mentioned drawbacks, and an object thereof is to further reduce the size of the electronic wristwatch by reducing the space required for positioning and fixing the battery receiving spring as much as possible. Is.

[0007]

[Means for Solving the Problems]

 The gist of the present invention for achieving the above object is to insert a shoulder portion formed on a battery receiving spring into a groove portion of a main plate for positioning, and to attach the shoulder together with a train wheel bridge by a screw for fixing a part of the train wheel bridge. The battery receiving spring is fixed.

Further, the battery receiving spring is provided with an exposed portion from the circuit board to serve as a test terminal for one pole of the battery.

[0009]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1, FIG. 2, FIG. 3, and FIG. 4 all show the structure in the embodiment of the present invention. FIG. 1 is a perspective view of a main part showing the embodiment of the present invention, and FIG. 2 is a plan view, FIG. 3 is a sectional view taken along the line AA in FIG. 2, and FIG. 4 is a sectional view taken along the line BB in FIG.

Referring to FIG. 2, the overall plane structure of the timepiece according to the embodiment of the present invention will be described. Reference numeral 11 is a plastic base plate having a train wheel 12 in the center. The train wheel 12 is axially supported by a train wheel receiver 13, and a circuit board 14, a battery 15, and a motor 16 are arranged so as to surround the circumference. A tube 22 as shown in FIG. 3 is planted on the main plate 11 at a position where the train wheel 12 and the battery 15 are close to each other. A train wheel bridge 13 made of a plastic material is positioned and fixed to the tube 22 planted in the main plate 11. An annular portion 13a is formed around the tube 22 in the train wheel bridge 13 to position the battery receiving spring 18 and to have an insulating structure between the tube 22 and the battery receiving spring 18. The circuit board 14 and the pressing plate 23 are laminated on the battery receiving spring 18 and fixed and held by the screw 20.

As for the shape of the battery receiving spring 18, referring to FIGS. 1 and 4, etc., the flat surface portion 18 b held by the train wheel bridge 13, the receiving spring portion 18 c electrically connected to the battery 15, and the flat surface portion 18 b. It is formed between the bending portion 18c and the bending portion 18c, and is composed of a bent portion 18d having a shoulder portion 19. The train wheel bridge 13 has a projecting portion 13a for insulating the tube 22 from the battery receiving spring 18 for conducting the (-) pole 15a, which is one pole of the battery 15, to the circuit board 14. . A groove portion 17 into which a shoulder portion 19 of a battery receiving spring 18 is inserted is formed in the base plate 11 at a position close to the battery 15 and in the thickness direction of the base plate 11. A shoulder portion 19 is inserted into the groove portion 17, and is laminated and fixed on the tube 22 together with the train wheel bridge 13 and the circuit board 14.

The battery receiving spring 18 has an exposed portion 14a that does not overlap the circuit board 14 when viewed further in a plan view, and the battery receiving spring 18 seen through the exposed portion 14a has a A terminal 21 is formed so as to be a test pattern for one pole of the battery 15.

Next, the assembly process will be described with reference to FIG. The train wheel bridge 13 is laminated on the main plate 11 by being combined with the tube 22 planted in the main plate 11. The train wheel bridge 13 is formed with an annular convex portion 23 at a coupling portion with the tube while supporting the train wheel 12 axially. The battery receiving spring 18 is positioned by inserting the shoulder portion 19 into the groove portion 17 formed in the main plate 11 and by mating with the annular convex portion 23 formed in the train wheel bridge 13. The circuit board 14 is attached to the tube 22 and stacked on the battery receiving spring 18. According to this embodiment, the battery receiving spring 18 is fixed on the plane at the joining portion with the tube 22, and the shoulder portion 19 of the battery receiving spring is inserted into the groove portion 17 of the main plate to position it in the plane direction. Therefore, a flat space for positioning other than screws is not required. In addition, the screw for fixing the train wheel bridge is also used for fixing the battery spring, so there is no need for a planar space for providing a dedicated screw. In addition, since the ring-shaped projection is formed on a part of the train wheel bridge to arrange the battery receiving spring, no special parts such as the winding stem receiver are required, and the space can be saved in cross section. Is possible.

[0014]

[Effect of device]

 As described above, according to the present invention, since a dedicated screw for fixing the battery receiving spring is not required, it is possible to effectively utilize the space occupied by the screw until now, and the battery receiving spring can be effectively used. Since the flat portion of the wheel train is received by a part of the train wheel bridge, there is no need for a unique component such as a winding stem receiver or a planar or sectional space for the component. Moreover, since it can be realized without requiring a complicated assembly process, a technology for miniaturizing a timepiece module can be provided at low cost, and an electronic wristwatch can be provided with further functionality and luxury. It becomes possible.

Further, since the test terminal of one pole of the battery is formed in a part of the battery receiving spring, it is not necessary to separately provide a planar space for that. Therefore, the flat space can be effectively used, and the timepiece module can be downsized.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a battery receiving spring positioning structure according to an embodiment of the present invention.

FIG. 2 is a plan view of a battery receiving spring positioning structure according to an embodiment of the present invention.

FIG. 3 is a sectional view taken along line AA in FIG.

FIG. 4 is a sectional view taken along line BB in FIG.

FIG. 5 is a cross-sectional view showing a conventional positioning structure for a battery receiving spring.

[Explanation of symbols]

 1, 11 Plastic main plate 2 Winding true receiver 2a Boss 2b Annular groove 3, 18 Battery receiving spring 3a Annular end 3b Falling part 3c Connection with battery receiving part 4, 14 Circuit board 5 Pusher plate 6, 22 Tube 12 wheel train 13 wheel train receiver 13a annular portion 15 battery 16 motor 17 groove portion 18b flat surface portion 18c spring receiving portion 18d bent portion 19 shoulder portion 20 screw 21 terminal 23 annular convex portion

Claims (2)

[Scope of utility model registration request] 1. A train wheel is provided in a central portion, and a plane arrangement structure is provided in which a circuit device, a battery, and a motor are arranged so as to surround the train wheel, and the train wheel is implanted in a main plate formed of a plastic material. In a positioning structure of a battery receiving spring for positioning and fixing a train wheel bridge and a battery receiving spring to a tube, the tube is planted in the main plate in the vicinity of the train wheel and the battery, and the tube is formed of a plastic material. At least the train wheel bridge, the battery receiving spring, and the circuit device are laminated,
Further, the shape of the battery receiving spring is such that a flat portion that is held by the train wheel bridge, a receiving spring portion that is in conduction with the battery, and a shoulder portion that is formed between the flat portion and the receiving spring portion. The train wheel bridge has a protrusion for insulating between a tube and a battery receiving spring that connects one pole of the battery to the circuit device, and the main plate has the battery receiving spring. A positioning structure for a battery receiving spring, wherein a groove for inserting the shoulder portion of the battery is formed. 2. The battery receiving spring has an exposed portion that does not overlap with the circuit device when seen in a plan view, and one test terminal is formed through this exposed portion. The positioning structure for a battery receiving spring according to claim 1.