JPS5815745B2 - clock device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a timepiece device.

Generally, in a clock device that uses a seven-wheel drive source, an electromechanical conversion device consisting of a rotor, a stake, and a coil must be installed between the upper plate and the lower plate. In view of these problems, the present invention has developed an electromechanical converter that is difficult to achieve, and requires many steps to arrange these parts together with the movable parts between the two base plates. The constituent stator also functions as a middle plate to reduce the number of parts and downsize the device, and at the same time, a part of the stator is used to prevent the gear fitted into the shaft from being pulled out. The object of the present invention is to provide a new timepiece device that can be constructed and assembled with reduced man-hours.

Therefore, details of the present invention will be explained below based on illustrated embodiments.

In FIGS. 1 and 2, reference numerals 1 and 2 are main plates that integrally form bearings for the gear train and supporting parts for positioning other parts, respectively. A locking portion 3a having a tapered portion and a locked portion 3b are formed, and both the base plates 1.2 are elastically connected by these to form a case.

The materials for the base plates 1 and 2 include synthetic resins such as polycarbonate resin, fluororesin-filled polycarbonate resin, glass fiber-reinforced polyester resin, modified polyphenyline oxide resin, etc., and metal materials such as aluminum die-casting. It is not limited to the above example as long as it satisfies the mechanical strength as a bearing and the friction and wear characteristics as a bearing.

4 is a coil wound around a bobbin 5, and the bobbin 5 is attached to a stator 6.

The stator 6 is integrally pressed into a U-shape from a soft magnetic material, such as a silicon steel plate. It also serves as

The bobbin 5 is inserted from one end of the stator 6 against the protrusions 6a, 6a formed protruding from the stator, and in the illustrated inserted state, the end of the bobbin 5 is fixed by the protrusions 6ay6a, and the bobbin 5 The corner portions of the base plates 1 and 2 are fixed to support portions a integrally formed to protrude from the base plates 1 and 2, and also serve as a spacer between the base plates 1 and 2.

Further, a circuit pattern is formed on a substrate 5a integrally extending from one end side of the bobbin 5, and circuit parts such as a crystal oscillator, an integrated circuit, and a trimmer are attached thereto.

I is a rotor, and this rotor meshes with a second hand wheel 9 via a second wheel 8, and the second hand wheel 9 meshes with a minute hand wheel 10 via an intermediate wheel 10.

The minute wheel 11 further meshes with the hour wheel 13 via a date wheel 12.

14 is a second hand shaft fixed to the second hand wheel 9, 15 is a minute hand pipe integrated with the minute hand wheel 11, one end of which is supported by the stator 6, and 16 is an hour hand pipe integrated with the hour hand wheel 13.

Further, a needle turning pinion 18 that is integrated with a needle turning knob 17 is engaged with the minute wheel 12.

In this embodiment, everything except the motor, electrical components, and second hand shaft 14 is molded from synthetic resin.

Next, support for the above-mentioned wheel train etc. will be explained.

The above-mentioned wheel train is supported using base plates 1 and 2 which also serve as a case, or a part of the stake 6.

The bearing portion has a structure that allows easy insertion of parts and prevents the parts from falling over when the wheel train is automatically assembled using, for example, an automatic assembly device.

19 and 20 are support parts that support the rotor 7.

The support portion 20 is a bearing portion 20a that pivotally supports the tenon portion of the rotor shaft.
and an annular body portion 2 formed integrally with this bearing portion in the axial direction.
0b and more.

The annular body part 20b holds the rotor 7 in a constant posture at the inner peripheral edge of the tip of the annular body part 20b even when the base plate 1 is not attached, and even when the rotor 7 is in the most inclined state, The rotor 7 is not in contact with the stator 6.

This is done after placing the rotor 7 on the support during automatic assembly, etc.
Since the base plate 1 can be maintained in a constant posture until the base plate 1 is finished being connected, the base plate 1 can be easily attached.

The support portion 19 includes a bearing portion 19a and a convex guide introduction portion 19b formed integrally with the bearing portion 19a.

The guiding introduction part 19b is designed to smoothly guide the tenon part to the bearing part 19a even if the shaft is slightly tilted when the base plate 1 is installed.

The support parts 21, 22.23 on the main plate 1 side that pivotally support the second wheel 8° second hand shaft 14 and the intermediate wheel 10 have the same structure as the support part 19, and the bearing parts 21a, 22a, 23a and the guide It consists of introduction parts 21b, 22b, and 23b.

The other end of the second wheel & pinion 8 is supported by a synthetic resin bearing bushing 24 press-fitted into the stator 6.

The lower end surface of the second hand wheel 9 is supported by a spring seat 25. Due to the elasticity of the spring seat 25, the second hand shaft 14 comes into elastic contact with the bearing portion 22 with an appropriate contact pressure, thereby preventing the second hand (not shown) from breathing. It is prevented.

The upper end portion of the minute wheel 11 is supported by a hole forming portion 26 formed in the stator 6.

The support part 27 that supports the other end of the shaft of the intermediate wheel 10 has almost the same configuration as the support part 23, but after the intermediate wheel 10 is inserted into the support part 27 (when the main plate 1 is not attached), It is held by the through-hole forming portion 28 of the stator 6, and is prevented from falling down.

The hour wheel 12 is rotatably supported by a shaft portion 29 integrally projecting from the main plate 2, and after the stake 6 is attached, it is prevented from coming off from the lower end surface Q of the stake.

Further, the shaft portion 29 also serves to position the stator 6.

The support portion 30 that pivotally supports the needle turning pinion 18 is a tenon portion 18a.
The guide opening 30b is formed integrally with the support part 30a, and a flat protrusion part 30c. to prevent it from falling down.

The needle drive pinion 18 is held in a predetermined position by a device on the base plate 1, with the shaft portion 17a being supported by the through-hole forming portion 31 of the base plate 1 constituting the bowl opening.

Next, support for the stator 6, which also serves as an intermediate plate, will be explained.

The stator 6 is supported by the support parts 32, 33, 34 and the shaft part 29.

The support parts 32 and 33 have the same configuration, and as shown in the second figure, a truncated cone-shaped support column 35 integrally protrudes from the base plate 2.
The small protrusion 35a and the mounting hole 36 protruding from the stake 6 are passed through, and the small protrusion 35a is fitted into the hole 37a of the truncated cone-shaped support column 37 that is integrally protruded from the base plate 1. 35.37 is pressed and supported in the vertical direction.

Further, the support portion 34 is simply supported by support columns (not shown) protruding from the base plates 1 and 2.

The support columns fix the stator 6 and at the same time serve as a spacer between the base plates 1 and 2.

Furthermore, a housing portion 39 for a battery 38 is integrally formed on the main plate 2, and a positive connection terminal 40 is provided at each end of the storage portion 39.
A negative connection terminal 41 is attached.

A band-shaped tongue piece 40a is bent from one end of the connecting terminal 40, and the end thereof is welded to the power supply terminal of the circuit pattern of the board 5a.

Also, one end 41a of the connection terminal 41 is arranged along the outer wall surface of the battery storage section 39, bent at an appropriate part, and connected to the power supply terminal of the board 5a. As an example, the thickness l between the upper surface of the main plate 1 and the lower surface of the main plate 2 is 17w1. As a clock mechanical body, it is extremely thin.

This was made possible by the integrated structure of the main plate and case, and the dual use of the stator as the middle plate.

Next, the operation of the timepiece device having the above configuration will be explained.

When the rotor 7 rotates due to the drive output of the crystal oscillator, 2
The second hand wheel 9 rotates once per minute via the number wheel 8, the minute hand 11 rotates once per hour via the intermediate wheel 10, and the clock hand 13 rotates once per hour via the minute wheel 12. The watch rotates once and displays a predetermined time.

When correcting the needle rotation, when the needle rotation knob 17 is rotated, the minute wheel 12 is rotated via the needle rotation pinion 18.
The minute hand wheel 11 and the hour hand wheel 13 are rotated by moving to the counter wheel of this day, and the desired hand rotation correction is made.

Due to this rotation of the hour and minute hands 11, the intermediate pinion 10a and the intermediate axle 10b integral therewith in the third diagram rotate, but the elastic engagement portion 10d of the intermediate gear 10c and the intermediate axle 1
0b slips on its friction surface, and the needle turning motion is not transmitted to the following gear train.

As described above, the present invention utilizes the stake as the middle plate of the timepiece machine in addition to its original function, which not only reduces the number of parts, but also makes it possible to make the timepiece device smaller, particularly thinner, and easier to assemble. It is possible to achieve improvement and cost reduction.

Moreover, since gears and the like are fitted from above onto the shaft protruding from the base plate, and their axial movement is regulated by a portion of the stator, work using automatic assembly equipment, etc. is facilitated, and the assembly process is simplified. Not only can this greatly reduce the amount of damage, but also the height of the stator can be regulated by the shaft.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view thereof, and FIG. 2 is a developed sectional view thereof. 1.2... Main plate, 6... Stake, 7... Rotor, 9... Second hand wheel, 11... Minute hand wheel, 12... Tens wheel, 13... Hour hand wheel, 29 ...Shaft part.

Claims (1)

[Claims] 1. In a timepiece device in which an electromechanical conversion device consisting of a rotor, a stator, and a coil is disposed between an upper plate and a lower plate, and a timepiece train driven by the device, the stake is connected to the upper plate and the lower plate. A timepiece characterized in that the stator is supported substantially parallel to the base plate, and a part of the stator restricts the axial movement of a gear rotatably fitted into a shaft provided on the base plate. Device.