JP2870507B2 - Analog clock fixed structure - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timepiece member fixing structure for an analog timepiece, particularly to a timepiece member fixing structure that does not use screws. 2. Description of the Related Art Conventionally, a timepiece fixing structure of an analog timepiece is generally fixed by a screw. As a fixing structure using no screw 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) The necessity of screws and screw pins has caused a cost increase due to an increase in the number of parts. (2) Since screw torque control in assembling is not stable, there are quality problems such as a screw thread when the tightening torque is low, a screw break when the 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 a screw pin, and stress is always applied by driving a screw pin. There have been problems from the viewpoint of quality and after-sales service, such as cracking and a decrease in the fixing force of the screw pin. [0008] In addition, in the case of fixing only by heat caulking, after-sales service cannot be performed at all, and there is a serious problem that the commercial value of the product is impaired. The present invention solves the above-mentioned conventional problems by reducing the number of parts of a timepiece, which is a frame of a timepiece, sandwiched between a main plate and a holding member by using an analog timepiece fixing structure without screws. It is an object of the present invention to realize a low-cost watch body and to obtain a high-quality watch body with high reliability. [0010] In order to solve the above problems, a fixing structure of an analog timepiece according to the present invention comprises a wheel train,
Motor, a clock component made of circuit members such as a clock machine frame, in the fixing structure of the analog clock and a pressing member for holding and fixing between the clock component of the clock machine frame, said motor, A stator and
Block that generates magnetic force to rotate the rotor
And a coil lead for transmitting an electric signal to the coil block.
Are provided and the de board, the pressing member has a plurality of engaging portions for engagement portion engages provided in the watch machine frame,
A plurality of elastic portions for pressing the timepiece component, and at least one elastic portion is provided on the timepiece frame side.
It has a curved shape, and the elastic portion
The part bent toward the timepiece frame side is the stator,
The coil block and the coil lead board are pressed and held.
It is characterized by having . The fixing structure of the analog timepiece constructed as described above has the elasticity portion disposed at a substantially intermediate position from the vicinity of both the engaging portion and the engaging hole portion, so that the thickness tolerance of the sandwiching component is attained. Can be absorbed, and at the time of assembling, the elastic portion can be displaced and incorporated, 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 with high quality reliability can be realized. 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. Reference numeral 1 denotes a main plate which is a timepiece frame made of a plastic material, which guides a wheel train, a motor, circuit members, etc., which will be described later.
Hold. The base plate has convex portions 1-a, 1-b,
11c and 1-d. The protruding portion is a portion for engaging and hooking a battery plus terminal which is a holding member described later. 2,3
Reference numerals 4, 5, 6, 7, and 8 are a second wheel, a third wheel, a fourth wheel, a fifth wheel, a rotor, a tsuzumi, and a minute wheel, respectively. Reference numeral 9 denotes a clutch plate, which is guided by the main plate and guides the lower wheel of the third wheel.
Reference numeral 10 denotes a stator, and reference numeral 11 denotes a battery negative terminal. Reference numeral 12 denotes a train wheel bridge made of a plastic material for guiding and holding the above-mentioned components. Numeral 13 denotes a coil block which contacts the stator to convert the electric signal from a circuit block described later into a magnetic field to rotate the rotor. Reference numeral 14 denotes a circuit block for mounting and mounting the MOS-IC chip 15 and the quartz oscillator 16 to make electrical contact with the above-mentioned negative terminal of the battery and to make contact with the coil lead board 17 of the above-mentioned coil block. And transmit electrical signals. Reference numeral 18 denotes a winding stem functioning as an external operation member. All of 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 above-mentioned members and has a function to be described later. First, there are provided engagement portions 191-1a, 191-1b, 191-1c, 191-1d for engaging with the base plate convex portions functioning as fixing means of the components. Reference numerals 19-e, 19-f, and 19-1g each comprise an elastic portion. The 19-e portion includes a stator and a coil block, and the 19-f portion includes a stator, a coil block, a coil lead board, and a circuit pattern. The output terminal section, 19g, holds down the crystal case. Reference numeral 19h denotes an electric contact elastic portion which comes into contact with the side surface of the battery. Reference numeral 191-1i denotes a positive conducting elastic portion which comes into contact with the above-mentioned circuit block pattern and conducts a positive potential to the circuit block by a constant contact pressure. 1
Reference numeral 9-1j denotes an elastic portion which engages with the above-described winding stem and generates a feeling of positioning and switching operation during the operation of the winding stem. Next, the incorporation of this battery plus terminal will be described. The battery plus terminal is guided by base plate guide shafts Ie, 1-f, and 1-g, and engagement portions 191a to 191d with the base plate protrusion are incorporated along the slope of the protrusion of the base plate. It is.
Timepiece components sandwiched between the main plate and the battery plus terminal, the battery plus terminal engaging portion, and variations 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.
In a state where it is pushed down further with a jig etc. from the dimensions (arrow B in FIG. 2)
Direction), the battery plus terminal engaging portion is easily guided to the base plate convex portion. When the pressing down by the jig or the like is released, a constant contact load can be applied to the above-described components by the elastic force of the elastic portion. The fixing structure using the battery plus terminal eliminates the need for screws and screw pins, and because the elastic parts are in contact with the metal parts, the contact pressure is constant even when it changes over time. Is high. Also, the elastic portion of the battery plus terminal is constantly applied to the convex portion of the base plate made of plastic material, which may cause deformation and cracking due to aging. , Because thick wall is easily secured in cross section,
The margin more than doubled compared to the strength of the plastic shaft provided on the conventional base plate by heat caulking. Also, as shown in FIGS. 2 to 4, by thermally caulking the guide shaft of the main plate, the battery plus terminal reaction force is received by the convex portion of the main plate and the heat caulked portion of the main plate guide shaft. , The reliability of quality increases. If after-sales service is required, the parts can be replaced by cutting the plastic heat-sealing part. From the functional point of view, there is no problem even without heat-sealing as described above. With the timepiece fixing structure using only heat caulking, the problem that could not be solved at all can be solved. In the above-described embodiment, the elastic portion is provided at a substantially intermediate position from the vicinity of both the engaging portion and the engaging hole portion. Needless to say, the closer the stator and the coil block contact portion and the quartz case and the clock fixing hook portion are, the more effective they are. Further, in this description, the battery fixing terminal has been described as a clock fixing function member, but a simple clock fixing member having no electric conduction means may be used. Further, in the present description, the shape of the engaged portion of the base plate has been described as a convex portion, but it is a concave portion, and it goes without saying that even if the engaging member has a convex shape, there is no problem in function at all. According to the present invention, since the pressing member is provided with the elastic portion for pressing the timepiece component toward the timepiece frame, the engagement between the pressing member and the timepiece frame is engaged. If the mating part is engaged , the stator and coil
The timepiece components including the lock and the coil lead board can be easily clamped. Therefore, it is possible to provide a highly reliable timepiece that can reduce the number of parts and is extremely easy to assemble and that can reliably hold and fix the timepiece components.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing a fixing structure of an analog timepiece according to the present invention. FIG. 2 shows a sectional view of a main part of FIG. FIG. 3 is a sectional view of a main part of FIG. FIG. 4 is a sectional view of a main part of FIG. [Description of Signs] 1 ··· Main plate 2 ··· 2nd wheel 3 ··· 3rd wheel 4 ··· 4th wheel 5 ··· 5th wheel 6 ··· Rotor 7 ····························································································· Battery-plus Terminal

────────────────────────────────────────────────── (5) References JP-A-59-77378 (JP, A) JP-A-55-133377 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G04C 3/00

Claims (1)

(57) [Claims] Train wheel, a motor, a clock component made of circuit members such as a clock machine frame, in the fixing structure of the analog clock and a pressing member for holding and fixing between the clock component of the clock machine frame, said motor The stator and the rotor in contact with the stator
Coil block that generates magnetic force to rotate the motor
Coil lead board that transmits electric signals to the coil block
The pressing member has a plurality of engaging portions that engage with an engaged portion provided on the timepiece frame, and a plurality of elastic portions that resiliently press the timepiece component. And at least one of the elastic portions is warped toward the timepiece frame.
The elastic portion has a bent shape,
The part bent toward the clock frame side is the stator,
Press and hold the coil block and the coil block
A fixed structure for an analog watch.