JPH0642230Y2 - Fixed structure of analog clock - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a timepiece member fixing structure for fixing a timepiece member of an analog timepiece, which does not particularly use a screw.

[Conventional technology]

Conventionally, a method of fixing a timepiece member fixing structure of an analog timepiece with a screw has been generally used.

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

[Problems to be solved by the invention]

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 has been a cost-up factor.

(2) Since the management of the screw tightening torque in the assembly 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 plastic material, the timepiece frame is cracked by the screw pin driving, or the timepiece frame is cracked due to the constant stress applied by the screw pin driving. There was a problem in terms of quality and after-sales service, such as a decrease 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 such a conventional problem, the present invention reduces the number of parts and reduces the cost by using the analog timepiece fixing structure that does not use screws for the timepiece parts sandwiched between the main plate that is the timepiece frame and the pressing member. Aiming to realize a watch body with
Moreover, the purpose is to obtain a watch body of high quality and reliability.

[Means for solving problems]

In order to solve the above problems, a fixing structure for an analog timepiece according to the present invention includes a timepiece component including a timepiece frame, a train wheel, a motor, a switching member, a circuit member, and a holding member for holding and fixing the timepiece component. In the structure for fixing an analog timepiece, the timepiece frame is provided with a shaft portion for positioning and crimping the presser member, and the presser member is comprised of a plurality of engaged members located on an outer peripheral portion of the timepiece frame. An engaging portion for engaging and fixing to the shaft portion, an engaging hole portion for engaging with the shaft portion, and an elastic portion for press-fixing and fixing the timepiece constituent member, the elastic portion including the engaging portion and the engaging hole portion. It is characterized in that it is placed at a substantially intermediate position from the vicinity of both.

[Action]

The fixing structure of the analog timepiece configured as described above can absorb the thickness tolerance of the sandwiched component by arranging the elastic portion at a substantially intermediate position from the vicinity of both the engaging portion and the engaging hole portion. In addition, at the time of assembling, the elastic portion can be displaced and incorporated, and the assembling property and workability can be improved.

In addition, a constant contact pressure can always be obtained on the holding member,
It is possible to realize a fixed structure of a watch with high quality reliability.

〔Example〕

An embodiment 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 the essential parts thereof.

Reference numeral 1 denotes a main plate which is a timepiece frame made of plastic material and guides and holds a train wheel, a motor, a circuit member and the like which will be described later. The base plate has convex portions 1-a, 1-b, 1-c, 1-d on the outer peripheral portion. The convex portions are engaging and hooking portions for a battery plus terminal which is a pressing member described later. 2,3,4,5,6,7,8 are
Second wheel, third wheel, fourth wheel, fifth wheel, rotor, wheel,
It is a back car of the day. 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 the above-mentioned components. 13
Is 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. 14 is a circuit block, a MOS-IC chip 15,
The crystal oscillator 16 is mounted and mounted, and contacts the battery negative terminal described above for electrical conduction, and contacts the coil lead substrate 17 of the coil block described above to transmit an electric signal.

Reference numeral 18 is a winding stem that functions as an external operation 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. Reference numeral 19 denotes a battery plus terminal which holds and fixes all the above-mentioned members and has a function described later.

First, it has a hooking portion 19-a, 19-b, 19-c, 19-d for engaging a convex portion of the main plate which functions as a fixing means for a component.

19-e, 19-f, and 19-g each consist of an elastic part. The 19-e part is the stator and coil block, the 19-f part is the stator and coil block, and the coil lead board and the output terminal part of the circuit pattern. , 19-g holds down the crystal case. 19
-H is an elastic portion of the electrical contact that contacts the side surface of the battery. 19-
i is a positive conducting elastic portion that contacts the circuit block pattern described above, and conducts a positive potential to the circuit block by a constant contact pressure. Reference numeral 19-j is an elastic portion which engages with the above-described winding stem and generates a feeling of positioning and switching operation at the time of winding stem operation.

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

The battery plus terminal is guided by the main plate guide shafts 1-e, 1-f, 1-g, and the engaging portions 19-a to 19-d with the convex parts of the main plate are incorporated along the slopes of the convex parts of the main plate. The timepiece component held 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 positive terminal engaging portion is easily pushed down from the dimension A shown in FIG. 2 by incorporating it with a jig or the like (in the direction of arrow B in FIG. 2) so that the battery positive terminal engaging portion can be easily protruded. Guided to the department. 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 of the elastic portion by the metal parts makes the contact pressure constant even with the end change, so that the quality is highly reliable.

Also, the reaction force of the elastic portion of the battery positive terminal is constantly applied to the convex portion of the ground plate made of plastic material, which may cause deformation and cracks due to aging, but as is clear from the figure, it is planar and sectional. Since the thick wall is easily secured, the margin is more than doubled as compared with the conventional strength due to the heat caulking of the plastic shaft provided on the main plate.

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

If after-sales service is required, it is possible to replace the parts by cutting the plastic heat caulking part, and from the functional point of view, there is no problem without the heat caulking, so there is no problem with the conventional heat caulking. With the watch-fixing structure using only the chisel, problems that could not be solved at all can be solved.

In the above-described embodiments, the elastic portion is provided in the approximate middle position from the vicinity of both the engaging portion and the engaging hole portion. However, this elastic portion is functionally at a position that requires a contact load. Needless to say, that is, the closer the stator and the coil block contact portion and the crystal case and the timepiece fixed hook portion are, the more effective they are.

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 electrical 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.

[Effect of device]

According to the present invention, the timepiece frame is provided with the shaft portion for positioning and crimping the presser member, and the presser member is engaged and fixed to the plurality of engaged parts located on the outer peripheral portion of the timepiece frame. And an elastic portion for pressing and fixing the timepiece component with the engaging hole portion that engages with the shaft portion and the shaft portion, and the elastic portion is arranged at a substantially intermediate position from the vicinity of both the engaging portion and the engaging hole portion. Since the contact load can be increased, a stable pressure contact fixing force can be secured, and the lifting of the entire component can be suppressed.

Therefore, the timepiece component can be securely fixed without using the screw and the screw pin.

Further, since the guide shaft for positioning the pressing member is provided on the timepiece frame, it can be easily assembled.

Therefore, it is possible to provide a highly reliable timepiece body that can reduce the number of parts and can be easily assembled.

Even when compared with the conventional watch fixing structure using only heat caulking, the stability of quality due to aging is the same as that when using screws, and after-sales service is also possible. , Very large.

[Brief description of drawings]

FIG. 1 is a plan view showing a structure for fixing an analog timepiece according to the present invention. 2, 3 and 4 are sectional views of the main part of FIG. 1 …… Main plate 10 …… Stator 13 …… Coil block 14 …… Circuit block 19 …… Battery positive terminal

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kajiro Okakura 390 Shiojiri-cho, Shiojiri-shi, Nagano Shiojiri Industrial Co., Ltd. (56) References: 57-114993 (JP, U): 58- 132886 (JP, U) Actual opening 60-150482 (JP, U) Actual opening 58-42692 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A structure for fixing 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 the timepiece frame is A shaft portion for positioning and crimping the pressing member is provided, and the pressing member is provided on the shaft and the engaging portion for engaging and fixing to a plurality of engaged portions located on the outer peripheral portion of the timepiece frame. An engaging hole portion to be engaged and an elastic portion for pressing and fixing the timepiece constituent member are provided, and the elastic portion is arranged at a substantially intermediate position from the vicinity of both the engaging portion and the engaging hole portion. Fixed structure of analog clock.