JP2897771B2 - Analog clock fixed structure - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timepiece fixing structure for an analog timepiece, in which a screw is not particularly required. 2. Description of the Related Art Conventionally, a watch member fixing structure of an analog timepiece has generally been 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 led to an increase in cost due to an increase in the number of parts. (2) Since the screw tightening torque control in the assembly is not stable, there are quality problems such as a screw thread when the tightening torque is low, a screw break 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 with a screw pin, and stress is always applied by driving the 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] Further, in the case of fixing only by heat caulking, there is also a serious problem that after-sales service cannot be performed at all and the commercial value of the product is impaired. In order to solve the above-mentioned conventional problems, the present invention provides a timepiece which is sandwiched between a main plate serving as a timepiece frame and a holding member by using an analog timepiece fixing structure which does not require the use of screws. It is an object of the present invention to achieve a timepiece with reduced cost and reduced cost, and to obtain a timepiece with high quality reliability. [0010] In order to solve the above problems, a fixing structure of an analog timepiece according to the present invention comprises a timepiece component comprising a wheel train, a motor, a switching member, a circuit member and the like, and a timepiece. A timepiece frame and a pressing member for holding and fixing the timepiece component between the timepiece frame, and the pressing member includes a plurality of engaging members that engage with engaged portions provided on the timepiece frame. Portion and a plurality of elastic portions configured to bendable on the timepiece frame side while resiliently pressing the watch component, and the engagement between the engaging portion and the engaged portion, and the resilient pressure by the elastic portion. It is characterized by fixing the timepiece components. 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 and the like, which will be described later.
Hold. The base plate has convex portions 1-a, 1-b,
1-c 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 thumbwheel, and a minute wheel, respectively. Reference numeral 9 denotes a clutch plate that is guided by the main plate to guide 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, which guides and holds the above-described components. Reference numeral 13 denotes a coil block, which contacts the stator to magnetically convert an electric signal from a circuit block described later to rotate the rotor. Reference numeral 14 denotes a circuit block on which a MOS-IC chip 15 and a quartz oscillator 16 are mounted and mounted, thereby making electrical contact with the above-mentioned battery negative terminal, and contacting with the above-mentioned coil lead board 17 of the coil block. To 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, engagement with the convex portion of the base plate functioning as fixing means of the parts, hook portions 19-a, 19-b, 19-
c, 19-d. Reference numerals 19-e, 19-f, and 19-g each include an elastic portion. The 19-e portion includes a stator and a coil block, and the 19-f portion includes a stator and a coil block, a coil lead board, and a circuit pattern. The output terminal portion 19-g holds down the crystal case. Reference numeral 19-h denotes an electric contact elastic portion that contacts the side surface of the battery. Reference numeral 19-i denotes a positive conductive elastic portion which comes into contact with the above-described circuit block pattern and conducts a positive potential to the circuit block by a constant contact pressure. 1
Reference numeral 9-j denotes an elastic portion which engages with the winding stem described above to generate a feeling of positioning and switching operation at the time of winding stem operation. Next, the incorporation of this battery plus terminal will be described. The battery plus terminal is connected to the main plate guide shafts 1-e and 1-
f, 1-g, and an engaging portion 19-
a to 19-d are incorporated along the convex slope of the main plate.
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 the contact pressure is constant even with the passage of time due to the contact of the elastic part with the metal component, so that the reliability of the quality is high. Further, the elastic portion reaction force of the battery plus terminal is constantly applied to the convex portion of the ground plate made of a plastic material, which may cause deformation and cracking due to aging. , Because thick wall is easily secured in cross section,
A margin more than twice as large as 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 thermal caulking section. From the functional point of view, there is no problem without thermal caulking as described above. The problem that the timepiece fixing structure using only the heat caulking described above cannot at all solve the problem. 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 positive terminal has been described as the clock fixing function member, but it may be a simple clock fixing member having no electric conduction means. Further, in the present description, the shape of the engaged portion of the base plate is 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, there is provided a timepiece component comprising a timepiece frame, a wheel train, a motor, a switching member, a circuit member and the like, and an analog timepiece comprising a holding member for holding and fixing the timepiece component. In the fixing structure, the pressing member has a plurality of engaging portions and a plurality of elastic portions that hold and fix the timepiece component, and an engaged portion that engages with the engaging portion on an outer peripheral portion of the timepiece base frame. By having, parts can be reduced,
It is possible to provide a highly reliable timepiece that can be easily assembled and securely fix the timepiece component.

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

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-77378 (JP, A) JP-A 61-199821 (JP, U) JP-A-57-198096 (JP, U) JP-A 58-78 132886 (JP, U) (58) Fields studied (Int. Cl. ⁶ , DB name) G04B 1/00-49/04 G04C 3/00 G04C 10/00-10/04

Claims (1)

(57) [Claims] A timepiece component comprising a wheel train, a motor, a switching member, a circuit member, and the like; a timepiece frame; and a fixing structure for an analog timepiece comprising a holding member for holding and fixing the timepiece component between the timepiece frame. The pressing member includes a plurality of engagement portions that engage with engaged portions provided on the timepiece frame, and a plurality of pressure members configured to resiliently press the timepiece component and bendable toward the timepiece frame. An analog timepiece fixing structure, characterized in that the timepiece component is fixed by the engagement between the engaging portion and the engaged portion, and the elastic force of the elastic portion.