JPH09113646A - Securing structure for analog watch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize reliable securing while decreasing the number of component by providing parts to be engaged at the base frame part of a watch and a plurality of engaging parts and resilient parts for a stopper member. SOLUTION: The base plate 1 of watch base frame is provided with parts to be engaged, i.e., protrusions 1-a,..., 1-d, and a stopper member, i.e., the plus terminal 19 of a battery, is provided with a plurality of engaging parts and resilient parts in order to hold compositional members and to secure them in place. More specifically, hook parts 19-a,..., 19-d engage with the protrusions 1-a,..., 1-d and serve as means for securing the components. The hook parts 19-a,..., 19-d retain a stator 10 and coil block 13, the output terminal part of coil shield board and circuit pattern, and a quartz case. An electric contact resilient part 19-h touches the side face of battery while a plus conduction resilient part 19-i touches a circuit block 14 pattern and a resilient part 19-j is engaged with a stem and positioned. The securing structure employing the terminal 19 eliminates the need of screw or screw pin and since the contact pressure 15 sustained constant with time by means of the resilient parts, reliable securing can be attained while decreasing the number of components.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timepiece member fixing structure for fixing an analog timepiece member without using screws.

[0002]

2. Description of the Related Art Conventionally, the timepiece member fixing structure for analog timepieces has generally been fixed by screws.

Further, as a fixing structure using no screws at all, a fixing method using only heat caulking has been known.

[0004]

However, the conventional timepiece member fixing structure using screws has the following problems.

(1) Since a screw and a screw pin are required, the increase in the number of parts causes a cost increase factor.

(2) Since the management of the screw tightening torque in the assembling is not stable, there are quality problems such as a screw wrinkle when the tightening torque is low, a screw breakage when the tightening torque is too high, and a screw head chipping.

(3) When the timepiece frame is made of a low-strength material such as a plastic material, the timepiece frame is cracked by driving the screw pin, and stress is constantly applied by the screw pin driving, so that the timepiece's timepiece frame is damaged. There were problems in terms of quality and after-sales service, such as cracking and a reduction in the fixing force of the screw pin.

Further, in the case of only fixing by heat caulking, after-sales service cannot be performed at all, and there is a big problem that the product value of the product is impaired.

Therefore, in order to solve the above-mentioned conventional problems, the present invention reduces the number of parts by using a structure for fixing a timepiece, which is sandwiched between a main plate which is a timepiece frame and a pressing member, to an analog timepiece without using screws. The purpose of the invention is to realize a timepiece body with low cost and to obtain a timepiece body with high quality reliability.

[0010]

In order to solve the above-mentioned problems, the analog timepiece fixing structure of the present invention comprises a timepiece frame,
In an analog timepiece fixing structure including a timepiece component including a train wheel, a motor, a switching member, a circuit member, and the like, and a holding member for holding and fixing the timepiece component, the holding member includes a plurality of engaging portions and the timepiece configuring member. Characterized in that it has a plurality of elastic portions for holding and fixing, and has an engaged portion that engages with the engaging portion on the outer peripheral portion of the timepiece base frame.

[0011]

In the analog timepiece fixing structure configured as described above, the thickness tolerance of the sandwiching component is absorbed by disposing the elastic portion at a substantially intermediate position from the vicinity of both the engaging portion and the engaging hole portion. In addition, it is possible to displace the elastic portion during the assembling, so that the assembling property and workability can be improved.

Further, a constant contact pressure can always be obtained on the holding member, and a timepiece fixing structure of high quality can be realized.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of the present invention, and FIGS. 2, 3 and 4 are sectional views of relevant parts.

Reference numeral 1 denotes a main plate which is a timepiece frame made of plastic material, and guides trains, motors, circuit members, etc., which will be described later,
Hold. The main plate has convex portions 1-a, 1-b,
11-c, 1-d. The convex portions are engaging and hooking portions for a battery plus terminal which is a pressing member described later. 2, 3,
Numbers 4, 5, 6, 7 and 8 are the second wheel, the third wheel, the fourth wheel, the fifth wheel, the rotor, the spoiler, and the back wheel of the day, respectively. A clutch plate 9 is guided by the ground plate to guide the lower handle of the third wheel.
Reference numeral 10 is a stator and 11 is a battery negative terminal, both of which perform known functions. A train wheel bridge 12 made of plastic material guides and holds each of the above-mentioned components. Reference numeral 13 denotes a coil block, which comes into contact with the stator to magnetically convert an electric signal from a circuit block described later to rotate the rotor described above. Reference numeral 14 is a circuit block in which a MOS-IC chip 15 and a crystal oscillator 16 are mounted and mounted to contact the negative terminal of the battery described above for electrical conduction, and to corrode the coil lead substrate 17 of the coil block described above. And transmit an electric signal.

Reference numeral 18 is a winding stem which functions as an external operating member. All the components described so far are guided and held by the main plate and the train wheel bridge, but have no fixing means. 19
Is a battery plus terminal which holds and fixes all the members described above and has a function described later.

First, there are engaging and hooking portions 191a, 191b, 191c, 191d for engaging a convex portion of the main plate which functions as a fixing means for the parts.

Numerals 19e, 19f, and 191g each consist of an elastic portion. The portion 19e is composed of a stator and a coil block, and the portion 19f is composed of a stator and a coil block, a coil lead substrate, and a circuit pattern. The output terminal portion 191g holds the crystal case. Numeral 191h is an elastic portion of the electric contact that contacts the side surface of the battery. Numeral 191i is a positive conducting elastic portion, which contacts the circuit block pattern described above and conducts a positive potential to the circuit block by a constant contact pressure. 1
Reference numeral 91j is an elastic portion that engages with the above-described winding stem and generates a feeling of positioning and switching operation during winding stem operation.

Next, the assembling of the battery plus terminal will be described.

The battery positive terminal is guided by the main plate guide shafts Ie, 1-f, 1-g, and the engaging portions 191a to 191d with the convex portions of the main plate are installed along the slopes of the convex portions of the main plate. Be done.
The timepiece component sandwiched between the main plate and the battery plus terminal, the battery plus terminal engaging portion, and the variation in bending height are absorbed by the elastic portion located near the engaging portion.

That is, the battery plus terminal engaging portion is shown in FIG.
A state where the jig is pushed down more than the size (arrow B in Fig. 2)
Direction), the battery positive terminal engaging portion is easily guided to the main plate convex portion. Then, when the pressing down by the jig or the like is released, a constant contact load can be applied to the above-mentioned component by the elastic force of the elastic portion.

The fixing structure using the battery plus terminal does not require screws and screw pins, and the contact pressure is constant even with the end-time change due to the contact of the elastic part by the metal parts. Is high.

Further, the convex portion of the base plate made of plastic material is constantly added with the elastic portion of the battery positive terminal, which may cause deformation and cracks due to aging, but as is clear from the figure, it is flat. Since the thick wall is easily secured in the cross section,
Compared with the conventional strength due to heat caulking of the plastic shaft provided on the main plate, the margin is more than doubled.

Further, as shown in FIGS. 2 to 4, when the guide shaft of the main plate is heat-crimped, the reaction force of the battery plus terminal is received by the convex portion of the main plate and the heat-crimped portion of the main plate guide shaft, so that the strength can be further secured. , Quality reliability is increased.

If after-sales service is required, parts can be replaced by cutting the plastic thermodynamic squeeze section. From the functional viewpoint, there is no problem without thermal staking as described above. With the watch fixing structure using only heat caulking, it is possible to solve problems that would not be possible at all.

In the above-mentioned embodiments, the elastic portion is provided at a substantially intermediate position from the vicinity of both the engaging portion and the engaging hole portion. However, this elastic portion is functionally required at a position requiring a contact load. Needless to say, that is, the closer the stator and the coil block contact portion, and the quartz case and the timepiece fixed hook portion are, the more effectively they act.

Further, in the present description, the battery positive terminal has been described as the timepiece fixing function member, but it may be a simple timepiece fixing member having no electric conducting means. Further, in the present description, the shape of the engaged portion of the main plate has been described as a convex portion, but it is needless to say that even if the engaging member has a convex shape, there is no functional problem.

[0027]

According to the present invention, there is provided an analog timepiece fixing structure comprising a timepiece component including a timepiece frame, a train wheel, a motor, a switching member, a circuit member, and a pressing member for holding and fixing the timepiece component. The pressing member has a plurality of engaging portions and a plurality of elastic portions for holding and fixing the timepiece constituent member, and an engaged portion which engages with the engaging portion on an outer peripheral portion of the timepiece base frame. Can reduce the number of parts,
It is possible to provide a highly reliable timepiece body that can be easily assembled and can reliably fix timepiece components.

[Brief description of the drawings]

FIG. 1 is a plan view showing a fixing structure of an analog timepiece according to the invention.

FIG. 2 shows a cross-sectional view of a main part of FIG.

FIG. 3 shows a cross-sectional view of a main part of FIG.

FIG. 4 shows a cross-sectional view of a main part of FIG.

[Explanation of symbols]

 1 ... Main plate 2 ... Second car 3 ... 3rd car 4 ... 4th car 5 ... 5th car 6 ... Rotor 7 ... Continued Wheel 8 ・ ・ ・ ・ Behind the wheel 10 ・ ・ ・ ・ ・ ・ Stator 13 ・ ・ ・ ・ Coil block 14 ・ ・ ・ ・ Circuit block 18 ・ ・ ・ ・ ・ ・ Mamure 19 ・ ・ ・ ・ ・ ・ Battery positive terminal

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[Procedure amendment]

[Submission date] December 9, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

[0010]

In order to solve the above-mentioned problems, the analog timepiece fixing structure of the present invention comprises a timepiece frame,
In an analog timepiece fixing structure including a timepiece component including a train wheel, a motor, a switching member, a circuit member, and the like, and a holding member for holding and fixing the timepiece component, the holding member includes a plurality of engaging portions and the timepiece configuring member. And a plurality of elastic portions for holding and fixing the member, and the timepiece base frame portion has an engaged portion that engages with the engaging portion and a guide shaft that guides the pressing member.

Claims (1)

[Claims] 1. A fixing structure for an analog timepiece, which comprises a timepiece component including a timepiece frame, a train wheel, a motor, a switching member, a circuit member, and the like, and a holding member for holding and fixing the timepiece component, wherein a plurality of the holding members are provided. An analog timepiece having an engaging portion and a plurality of elastic portions for holding and fixing the timepiece constituent member, and an engaged portion engaging with the engaging portion on the outer peripheral portion of the timepiece base frame. Fixed structure.