JP2602053Y2 - Electronic clock - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for fixing a base plate which is a base of a timepiece module.

[0002]

2. Description of the Related Art In recent years, wristwatches have seen a number of improvements to high-priced watches with enhanced design and the like, in order to realize the low-priced timepieces that are potentially required by customers. For example, by integrating the components of a watch module that consisted of multiple components, by integrating the component shapes, etc., the number of components can be significantly reduced, or engineering can be performed to reduce the cost of components. A low-cost timepiece module has been proposed in which a plastic material (hereinafter abbreviated as an engineering plastic material) is frequently used to combine components and reduce material costs and processing steps.

The structure of the latter timepiece module is disclosed in Japanese Utility Model Laid-Open No. 1-91286. According to FIG. 5 of this publication, the ground plate serving as the base of the analog block is formed of an engineering plastic material, has a shape smaller than the profile of the timepiece module, and includes the ground plate and is made of an engineering plastic material. A housing forming the profile of the watch module is arranged around the main plate. The base plate has a step motor and a pointer display wheel train mounted thereon, and has a boss for fixing a train wheel bridge supporting the pointer display wheel train to the base plate, and after mounting the train wheel bridge on the base plate, The train wheel bridge is attached to the watch module by ultrasonic welding of the boss.

On the other hand, for fixing the base plate and the housing, three positioning holes are formed at the corners of the base plate, and the positioning plate is inserted into the positioning holes by the positioning bosses formed in the analog storage portion of the housing. Positioned relative to the housing. Further, a stator, a coil core, a coil board, and a circuit board at the lowermost portion having a hole for engaging with the screw support are provided around one screw support among the plurality of screw supports embedded in the base plate. The analog block is fixed in the analog receiving portion of the housing via the circuit board by screwing and fixing the screw support from below the circuit board to the screw post.

[0005]

However, in the fixing structure of the analog block and the housing described in Japanese Utility Model Application Laid-Open No. Hei 1-91286, the impact force due to the disturbance applied when the timepiece is carried is applied to the single screw fixing portion. Therefore, in the long term, there is a concern that poor electrical conduction between the circuit board and the coil board due to loose screws. That is, the screw post fixing portion buried in the ground plate formed of engineering plastic material, the creep phenomenon occurs in the ground plate due to the screw tightening force, the mechanical strength deteriorates with time, and the screw post and the screw are Is reduced, and as a result, the screw tightening torque at the time of assembling the timepiece module may not be maintained.

In addition, one of the fixing members of the coil having a relatively large mass in the timepiece module component and the fixing member for fixing the analog block to the housing are screw fixing portions for establishing electrical continuity between the circuit board and the coil board. Since it is commonly used, it has a relatively strong fixing structure as a whole watch module, but the other fixing member side of the coil is only fixed to the base plate of the analog block, so even in the disturbance, from the windshield side In this case, there is a concern that the coil and other fixing members tend to rise due to the impact, and a concentrated load is applied to the other common screw post fixing portion side to cause a decrease in fixing force.

[0007] On the other hand, if the housing is incorporated into the analog block in the module assembling process, if a slight impact is applied only by the engagement between the through hole formed in the base plate of the analog block and the boss of the housing, the housing is lifted and assembled. There is a risk that the position will be unstable and the assemblability will be impaired.

An object of the present invention is to solve the above-mentioned drawbacks, obtain a reliable and inexpensive electronic timepiece with excellent assemblability, and relatively easily replace a circuit support provided around an analog block. The present invention provides a low-cost multi-function timepiece with multi-functions.

[0009]

In order to achieve the above object, the present invention has the following arrangement. That is, an analog block including a step motor , a pointer display wheel train, and an external operation switching mechanism mounted on a main plate, a synthetic resin circuit including a concave portion for containing the analog block in a planar manner and accommodating a battery serving as a power source of a timepiece. It comprises a supporting base, distribution in the circuit support base and positioning dowels that engage the through-hole formed in the base plate, the hook portion is constituted by a spring member elastically deformable in the flat surface direction and a cross-sectional direction in three positions the setting, of the hook portion
At least two are arranged so as to substantially sandwich the battery housing recess .

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a plan view of a right half of a timepiece module showing an embodiment of the present invention as viewed from the back cover side, and FIG. 2 is a left half view of a timepiece module showing an embodiment of the present invention as viewed from the back cover side. FIG. 3 is a plan view of an analog block of a timepiece module showing an embodiment of the present invention, and FIGS. 4 and 5 are cross-sectional views of essential parts showing an external operation switching mechanism of FIG. 1 according to an embodiment of the present invention. 6 is a cross-sectional view of a main part of a timepiece display wheel train of FIG. 1 according to an embodiment of the present invention, FIG. 7 is a cross-sectional view of a main part of a battery unit of the timepiece of FIG. 1 according to an embodiment of the present invention, and FIG. FIG. 9 is a cross-sectional view of a main part of the liquid crystal display device of the timepiece of FIG. 2 according to an embodiment of the present invention. FIG. 9 is a cross-sectional view of a main part showing a fixing structure of the analog block and the circuit support of FIG. . 1 to 9, the same numbers indicate the same components.

Referring to FIGS. 1 and 2, a timepiece module according to an embodiment of the present invention includes a pointer display 1 and a digital display 2.
The hour hand 3, minute hand 4, and second hand 5 (shown in FIG. 6) are concentrically driven about the center of the timepiece as the center of rotation. The digital display unit 2 digitally displays multifunctional information such as a time display and a calendar by a liquid crystal display device arranged at 6 o'clock of the clock. The hands of the hands display section 1 are corrected by operating the winding stem 34 in conjunction with a crown (not shown) as an external operation member. For example, when the crown is pulled out one step outside the case, the second hand 5 stops at an arbitrary position. ,
When the crown is rotated in a one-step pulling state, the hour hand 3 and the minute hand 4 work together, so that the time can be arbitrarily adjusted.

Switching of the digital display unit 2 and display modification are performed by first, second, and third push buttons (hereinafter abbreviated as first PB, second PB, and third PB) 6, which are external operation members.
It is performed by the operations of 7 and 8. The digital display unit 2 is
When the PB, 7 is repeatedly pressed, the mode shifts to various modes. When the first PB, 6 is pressed, the built-in lamp 9a is turned on and illuminates the digital display unit 2 to improve the recognition rate in darkness or the like. I have.

As an overall arrangement structure of the timepiece module, an analog block 10 constituting the pointer display unit 1 is arranged at a substantially central portion of the timepiece, and the analog block 10 is provided.
And a digital block 14 which constitutes the digital display unit 2 having a housing made of a circuit support 13 made of engineering plastics, which is arranged so as to cover the plane. The digital block 14 has a liquid crystal cell 11 constituting a liquid crystal display device at 6 o'clock, a battery 12 at 2 o'clock, and electric elements constituting a circuit block 9 around an analog block 10. ing.

First, the analog block 10 which is a pointer display drive unit will be described with reference to FIGS. The analog block 10 transmits a rotational driving force to the hands from a stepping motor 15 which is an electromechanical converter and a rotor 16 constituting the stepping motor 15 in the same manner as the basic structure of a well-known three-hand type timepiece display. Hand wheel 1
7 and an external operation switching mechanism 1 for correcting the pointer
Eight.

Reference numeral 19 denotes a base plate which is a base constituting the analog block 10, and the base plate 19 is a pair of screw tubes 19a and 19 for fixing module components to the timepiece module.
b, 19c and 19d are implanted, bearings 19e and 19f of the pointer indicating wheel train 17 and a relief hole 19g of the coil 20 are provided. On the other hand, a relief 19h with the battery 12 in a completed module state is provided. On the other hand, the liquid crystal cell 1
1. Components constituting the liquid crystal display device, such as the liquid crystal cell connection rubber 21, the adjacent portion 19i having a linear shape to avoid interference with the support member 13k (shown in FIG. 8), and the electricity constituting the circuit block 9. The outer shape has a substantially delta shape formed by a relief 19j with the element 9b.
Reference numeral 22 denotes a bearing 2 of the pointer display wheel train 17 similarly to the base plate 19.
A train wheel bridge having 2a, 22b, 22c, 22d. Reference numeral 23 denotes bearings 23a and 23b such as a fifth wheel 24 and a center wheel 25 that constitute a pointer display wheel train, and an uneven portion 23c (FIG. 4) for supporting components of the external operation switching mechanism 18 and the like.
An inner support formed by forming 23d and 23e (FIG. 5). The base plate 19 and the train wheel bridge 22 are formed of a thin plate made of a thin metal plate. The middle bridge 23 is formed of an engineering plastic material which is relatively easy to form in a complicated shape and is inexpensive.

Coil 2 constituting step motor 15
0 is disposed approximately at 10 o'clock, and the stator 26 and the coil 20
On the one hand, the ground plate 19, the stator 26, and the coil 20 are stacked and fixed by the coil screw 27 while the other is engaged with the screw tube 19c implanted in the ground plate 19, and the other is engaged with the screw tube 19c. Block 9
Is fixed to the main plate 19 by the circuit screw 28 in the final step of combining the analog block 10 and the digital block 14.

The pointer display wheel train 17 has a well-known wheel train structure, and the fifth wheel 24 made of engineering plastics → the fourth wheel 29 (drives the second hand 5) from the rotor 16 made of engineering plastics → the third wheel made of engineering plastics Rotational force is transmitted to the minute wheel 31 → an engineering plastic hour wheel 32 (driving the hour hand 3) via a reduction gear train composed of the car 30 → the center wheel 25 (driving the minute hand 4). A center wheel 25 to which the minute hand 4 is fixed is supported by a center support 23 and bearings 23b and 19k provided on the main plate 19, and a fourth wheel 29 to which the second hand 5 is fixed is a rotating shaft 25b of a minute pinion 25a constituting the center wheel 25. The hour wheel 32, which is supported by a center hole 25c coaxially provided and a bearing 22c of the train wheel bridge 22, and to which the hour hand 3 is fixed, is attached to the dial 3 against the bearing 19k of the base plate 19 of the center wheel 25.
The outer peripheral portion 25d of the minute pinion 25a protruding to the third side and the hour wheel 32
The rotation center hole 32a is engaged to rotate.

Referring to FIG. 4, the cross section of the engagement between the hour wheel 32 and the minute wheel 31 is located in a hollow portion formed by the lower surface of the main plate 19 and the dial 33. The cross-sectional position is regulated by the concave portion 19l and the middle support 23 provided in the first position. As described above, the rotation centers of the hour wheel 32, the center wheel 25 and the fourth wheel 29 are the same center and are driven at the center of the timepiece module.

As shown in FIG. 3, the rotor 1
The 6th and 5th cars 24 and the 3rd car 30 are arranged at positions closer to the 9 o'clock direction with respect to the center of the clock.
0, a train wheel 2 is provided in a planar space formed by the coil 20.
2 is fixed to the ground plate 19 with screws, and a screw tube 19b for positioning the center support 23 in a plane is implanted in the ground plate 19 so as to pass through the cross section of the stator 26 within the planar shape of the stator 26. Also, on the surface substantially opposite to the screw tube 19b with respect to the center of the timepiece, the center support 23 is positioned in a planar manner in the same manner as described above.
2 is a second screw tube 19a for fixing the screw 2 to the base plate 19
Is implanted in the main plate 19, and the inner support 23 is
a through the train wheel bridge 22 to tighten the main plate 1
9 is fixed. The screw tubes 19a, 19b, 1
9c and 19d, flanges 19aa (FIG. 5) and 19ba (FIG. 6) are integrally formed in a hollow portion formed by the lower surface of the base plate 19 and the dial 33, and the dial 33 deforms when an external impact is applied to the timepiece. The watch 33 receives the lower surface of the dial 33 so as to prevent the clock function failure due to the above.

Next, referring to FIGS. 4 and 5, the external operation switching mechanism 18 which operates and rotates in conjunction with the external operation member when correcting the hands will be described. The winding stem 34 for fixing the crown and operating and rotating the external operation switching mechanism 18 in conjunction with the external operation includes a concave portion 19m provided in the main plate 19 and a center support 23.
Are guided on four surfaces in the radial direction by a winding stem mounting hole formed by the recessed portion 23f provided in the groove. The end side of the winding stem 34,
That is, a cylindrical portion 34a for bearing a rotating thumbwheel 35 which is always engaged with the minute wheel 31 in the normal use state of the timepiece is formed on the center side of the timepiece, and is further on the tip side than the cylindrical portion 34a. At the time of the guideline correction 3
When the wheel 4 is pulled out to the outside of the case by one step, it engages with the four protrusions 35a provided on the thumbwheel 35 to rotate the center wheel 25 and the hour wheel 32 via the thumbwheel 35 → the minute wheel 31. It has a tetrahedral-shaped portion 34b for making it work.

Further, the winding stem 34 holds the winding stem 34 together with the winding stem presser 36 in the analog block 10 and has a concave portion 34c for determining the number of crowns to be pulled out, and between the cylindrical portion 34a and the concave portion 34c. Has an engagement recess 34d with a reset lever 37 that constitutes a reset switch that is turned on in the pointer correction state. In the normal use state, the winding stem concave portion 34c is engaged with a winding stem pressing portion 36 which constantly presses the winding stem 34 in a direction opposite to the dial 33, a solo van ball shape 34f, and a winding stem 1
A concave portion 34g is formed to engage with the winding presser 36 during step pulling.

The winding stem presser 36 for setting the number of steps of pulling out the winding stem 34 is a screw tube 1 for fixing the train wheel bridge 22.
9a and the positioning boss 23g provided on the center support 23 perform planar positioning (FIG. 3).
3 and is fixed to the timepiece module by the train wheel receiving screw 38 via the train wheel bridge 22. The winding presser 36 includes a battery 12 serving as a power source of the timepiece and the circuit block 9.
Pressure spring 3 constituting an electrical VDD conduction path with the battery
6a is integrally formed, and is pressed against the side surface of the battery 12 with a high contact pressure to prevent power supply chattering.

The reset lever 37 is always engaged with the winding stem concave portion 34d in the normal use state, and is engaged with the winding stem engaging portion 37a for operating in conjunction with the pushing and pulling operation of the winding stem 34. A reset return spring for constantly pressing the winding stem engaging portion 37a on the surface opposite to the rotation center engaging portion 37a in the direction of the winding stem with respect to the rotation center boss 23h of the provided reset lever 37. A reset spring 37c forming a switch is integrally formed with a reset pattern 9d (FIG. 1) provided on a circuit board 9c constituting the circuit block 9 together with a reset spring 37c (FIG. 3).

The reset lever 37 regulates the cross-sectional position of the thumbwheel 35 together with the thumbwheel housing recess 23i provided in the center support 23. For example, when the winding stem 34 is removed from the analog block 10, the thumbwheel 35 Is moved to the opening side of the thumbwheel storage recessed portion 23i, and when the winding stem 34 is assembled again, a state in which the winding stem tip 34h does not enter the center hole 35b of the thumbwheel 35 and cannot be assembled. It has become. Reset lever 3 as described above
Numeral 7 is disposed at a position where a slight gap is maintained in cross section with the outer periphery of the pinion wheel 35. The cross sectional position of the reset lever 37 is such that the middle support 23 and the other are integrated with the unwinding presser 36 and bent downward. Reset lever holders 36b, 36c
(FIG. 3).

Next, the digital block 14 will be described. According to FIG. 8, the housing of the digital block 14 is constituted by a circuit support table 13 made of engineering plastic which is arranged so as to cover the analog block 10 in a plane.
The circuit support base 13 includes a liquid crystal display device housing recess 13a, a battery housing recess 13b, an electronic device housing recess 13c, an analog block housing recess 13d, and the like. Interposed in the hollow part.

The circuit support base 13 is provided with circuit support base positioning holes 19 provided in three directions of a delta-shaped base plate 19.
Three positioning bosses 13e, 13f, and 13g to be engaged with n, 19p, and 19q (shown in FIG. 3) are integrally provided at a portion facing the upper surface of the base plate 19 in the analog block storage recess 13d. . The positioning boss 13e,
In the state of the timepiece module, 13f and 13g extend to the same cross-sectional height as the flange end faces 19aa and 19ba of the screw tubes 19a, 19b, 19c and 19d described above with reference to FIG.

Further, the positioning bosses 13e, 1 shown in FIG.
In the vicinity of 3f, 13g, an elastically deformable rod portion 13ha,
13ia, 13ja (see FIG. 9) and the rod portion 13ha,
Base plate fixing hooks 13h, 13i, 13j (FIG. 1) having elastically deformable arms 13ib, 13jb extending from the substantially central portions of 13ia, 13ja in the dial direction are located near the positioning bosses 13e, 13f, 13g. The hook 13h, one of which is disposed in the direction of the three sides of the outer periphery of the base plate 19 formed in a delta shape, is located near the winding stem 34, which is a component of the external operation switching mechanism 18, which is disposed in the 3 o'clock direction of the watch. The other hook 13i is disposed on the surface substantially opposite to the hook 13h with respect to the battery 12 and near the coil set screw 27, and the hook 13j is disposed in the longitudinal extension direction of the coil 20 with respect to the hook 13i. Are disposed around the coil connector section 20a.

The base plate fixing hooks 13h, 13i, 13
j is a concave portion 19 provided in the base plate 19 of the analog block 10
r, 19s, and 19t (see FIG. 9) to maintain the cross-sectional directions of the base plate 19 and the circuit support base 13, and
The analog block 10 and the circuit support 13 are fastened by the positioning bosses 13e, 13f, 13g (FIG. 1) for positioning the circuit support 13 in the planar direction. When the circuit support base 13 is mounted on the base plate 19, the base plate fixing hooks 13h, 13i, 13j and the positioning boss 1
3e, 13f and 13g are engaged with the main plate fixing hook 13
Explaining the part i, the slope 13ic for guiding the base plate 19 provided on the hook 13i has a large cut on the base plate 19 side, and after the tip of the positioning boss 13f engages with the positioning hole 19p of the base plate 19, the slope 13ic of the hook 13i. The circuit support 13 can be incorporated in the base plate 19 in a stable state since the base plate 19 comes into contact with the base plate 19. On the outer peripheral portion of the circuit support base 13, a local convex portion 13q is formed substantially radially in the outer peripheral direction with respect to the center of the timepiece so that the timepiece module and the inner wall of the timepiece case are stably engaged.

As shown in FIG. 8, the liquid crystal display device is a liquid crystal cell 11 which is a digital display element in which polarizing plates 11a and 11b are vertically adhered and fixed. It is composed of a light guide plate 39 having a function, a liquid crystal cell connection rubber 21 having conductivity with a connector to the circuit block 9, and is disposed at about 6 o'clock side of the timepiece except for the analog block 10, the battery 12, and the like. The liquid crystal cell 1 is mounted on the liquid crystal cell support 13k provided on the circuit support table 13.
1. The light guide plate 39 and the liquid crystal cell connection rubber 21 are stacked and arranged.

Next, the electrical connection relationship of the timepiece is shown in FIG.
This will be described with reference to FIG. The circuit block 9 for electrically controlling the operation of the step motor 15 constituting the analog block 10 and the liquid crystal cell 11 constituting the digital display device is a circuit board provided with an electric conduction pattern (not shown). A circuit chip 9e, a quartz oscillator 9f serving as a time reference device, and another electric element 9b are mounted on the liquid crystal cell 9c so as to overlap the liquid crystal cell 11 in a plane. The circuit board 9c has a VSS pattern or a first pattern that is electrically connected to a battery receiving spring 40, which is a connection terminal on the minus side for achieving electrical conduction between the circuit block 9 and the battery 12.
The electric switches 9g, 9h, 9i operating in conjunction with the PB, 6, the second PB, 7, the third PB, 8 are connected to the circuit support plate 4.
A switch pattern formed together with the switch springs 41a, 41b and 41c integrated with the switch motor 1, a connector pattern to the step motor 15 and a liquid crystal cell connection pattern (both not shown) are provided.

A battery receiving spring 40, which is a negative connection terminal for connecting the battery 12 and the circuit block 9, is connected to the watch 3
The analog block 10 and the timepiece module are arranged in a planar space in the time direction, and are positioned in a planar manner by a battery receiving spring boss 13l and a concave shape 13m provided on the circuit support base 13. On the surface opposite to the battery 12 after passing through the 34 axes, there is a contact portion 40a that is electrically connected to the circuit block 9. On the other hand, as shown in FIGS. 3 and 7, the battery-side pressure spring 36a serving as a positive connection terminal is provided.
A battery-side pressure spring base portion 36d integrally formed in a planar space between the battery 12 and the winding stem 34 in a downwardly bent shape from the winding stem pressing portion 36 in a substantially winding direction, and the battery-side pressure spring 36d is provided. A spring portion 36e bent in a substantially rectangular shape that can be elastically deformed from the base portion 36d, and a bent portion in the battery direction at a tip portion thereof so that a contact point comes to the upper surface side of the battery when pressed against the battery side surface. 36f.

As shown in FIGS. 1 and 3, the electric VD
As the conduction path of D, the battery-side pressure spring 36a
Wheel train receiving 22 → wheel train receiving screw 38 → screw tube 1
9a → the ground plate 19 → the screw tube 19c → the VDD screw (not shown) provided on the circuit board 9c via the circuit screw 28 and the circuit screw 28 are pressed against each other to supply power to the circuit block 9.

A circuit support plate 41 disposed so as to substantially surround the surface of the analog block 10 and the digital block 14 opposite to the dial 33 is provided with a three-
Hook fixing portions 41d, 41e, 41f, 41g, 4h, which are configured with the circuit support base 13 in the hour direction, the 6 o'clock direction, and the 9 o'clock direction.
1h (shown in FIGS. 1 and 2) is formed to simplify the module fixing structure as compared with the screw fastening method. On the other hand, the analog block 10 has a stator 26
After assembling the middle support 23, the train wheel support 22, etc., the circuit support plate 4
1 and the circuit support plate 41 is fastened to the module by screwing the circuit support plate screw 42 to the screw tube 19b described above.

The circuit support plate 41 is provided with a battery receiving spring 40 and a liquid crystal cell 1 by hooking the hook fixing portions 41d, 41e, 41f, 41g and 41h on the circuit support base 13.
1. The light guide plate 39, the liquid crystal cell connection rubber 21, the circuit block 9 and the like are sandwiched between the circuit support base 13 and the circuit support plate 41 to form an electrical conduction path of the liquid crystal display device. By attaching the hooks 13h, 13i, 13j provided on the circuit support base 13 and the circuit support plate screws 42 to the base plate 19, the analog block 10 can be firmly fixed.

The battery support spring 4 is provided on the circuit support plate 41.
0, and extends in the outer circumferential direction of the timepiece along the outer circumferential direction of the battery 12 so as to be movable in a direction away from the battery 12.
i are integrated (FIG. 1). A battery holding surface 41j for pressing the anode end surface 12a of the battery 12 is provided at a tip of the battery pressing spring 41i, and a surface pressing process 41k is provided on an upper surface of the battery holding surface 41j on the center side of the battery 12, and the battery 12 is mounted. At this time, it is prevented from catching on the large corner portion of the anode sealing portion 12b on the lower surface side of the battery 12 (FIG. 7). Further, the lower surface side of the battery holding surface 41j is a stopper portion 1 which engages with the concave portion 13n provided in the circuit support base 13 on the surface on the battery 12 side.
3p is provided, and the planar position of the battery holding surface 41j is always kept constant before the battery 12 is assembled. The battery 1 is provided on the circuit support plate 41.
Rigid battery pushing portions 41l and 41m integrated on a surface substantially opposite to the battery holding surface 41j with respect to the center of the two are provided in the battery storage portion 13b of the circuit support base 13 to provide a battery holding surface 41j.
Together with the battery 12 (see FIG. 1).

[0036]

As described above, according to the present invention, an analog block in which a step motor , a pointer display wheel train, and an external operation switching mechanism are mounted on a main plate, the analog block is planarly included, and a power supply for a clock is used. includes a synthetic resin of the circuit support base having a recess for accommodating a certain cell, a positioning dowel which engages a through hole formed in the base plate to the circuit support base, elastically deformed in a flat surface direction and cross direction Hooks made of spring members are arranged in three places , and the number of hooks is small.
Kutomo two by having disposed <br/> to Ryakukyo lifting the battery housing recess, supporting a large cell mass in the components of the timepiece module, in stable state coil portions to the watch module When the watch is handled in the timepiece module state, the structure of holding the winding stem portion which is relatively easy for the operator to hold can be strengthened, so that a stable work can be performed in the assembling process. Furthermore, against disturbance of the watch, the analog block is held in three directions by strong hooks, and the circuit support plate and the ground plate are screwed and fixed, so that there is no trouble and the assembly is excellent and reliable. An inexpensive electronic clock can be obtained. It should be noted that the analog block shown in the embodiment of the present invention is commonly used, and the digital block arranged around the analog block is replaced with a part corresponding to another watch specification, so that the multi-function can be relatively easily achieved. A low-cost multifunctional watch can also be provided.

[Brief description of the drawings]

FIG. 1 is a plan view of a main part of a right half of a timepiece module according to an embodiment of the present invention as viewed from a back cover side.

FIG. 2 is a plan view of a main part of a left half of the timepiece module showing the embodiment of the present invention as viewed from the back cover side.

FIG. 3 is an analog block plan view of the timepiece module showing the embodiment of the present invention.

FIG. 4 is a sectional view showing a main part of the external operation switching mechanism of FIG. 1 according to the embodiment of the present invention;

FIG. 5 is a sectional view showing a main part of the external operation switching mechanism of FIG. 1 according to the embodiment of the present invention;

FIG. 6 is a sectional view of a main part of the timepiece train of FIG. 1 according to the embodiment of the present invention;

FIG. 7 is a sectional view showing a main part of the battery unit of the timepiece of FIG. 1 according to the embodiment of the present invention;

FIG. 8 is a cross-sectional view of a main part of the liquid crystal display of the timepiece of FIG. 2 according to an embodiment of the present invention;

FIG. 9 is a sectional view showing a main part of the fixing structure of the analog block and the circuit supporter of FIG. 1 according to the embodiment of the present invention;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Analog block 12 Battery 13 Circuit support stand 13h, 13i, 13j Hook 14 Digital block 18 External operation switching mechanism 19 Main plate 19r, 19s, 19t Concave part 20 Coil 34 Makinari 41 Circuit support plate

Continuation of the front page (56) References JP-A-56-148083 (JP, A) JP-A-59-77378 (JP, A) JP-A-97-28383 (JP, U) (58) Fields investigated (Int .Cl. ^6, DB name) G04C 10/00 G04C 3/00 G04C 3/14

Claims (1)

(57) [Scope of request for utility model registration] 1. An analog block comprising a step motor , a pointer display wheel train, and an external operation switching mechanism mounted on a main plate, and a synthetic resin having a concave portion for containing the analog block in a plane and accommodating a battery serving as a power source of a timepiece. Made in comprises a circuit support base, a positioning dowel which engages a through hole formed in the base plate to the circuit support base, a hook portion which is constituted by a spring member elastically deformable in the flat surface direction and cross direction 3 electronic timepiece disposed at a location, at least two of said hook portion is characterized by being arranged to Ryakukyo lifting the battery housing recess.