JPS5833590Y2 - clock device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a clock device.

In conventional timepiece devices, the case that protects the mechanical body and the base plate that supports the components of the mechanical body are constructed as separate members.

For this reason, the watch device including the case became larger and the number of parts increased.

The present invention has a structure in which the main plate also serves as a case, and supports for the components of the machine body are integrally provided on this main plate, thereby significantly reducing the number of parts, simplifying the structure of the machine body, and downsizing the hexagram and clock device. The design has been made thinner, preventing the shaft from becoming dislodged due to the expansion of the distance between the bearings due to the deformation of the main plate that also serves as the case over time, and preventing the deterioration of the timing performance due to this, as well as making it easier to attach the case to the exterior body. It is something.

Embodiments of the present invention will be described below based on the drawings.

In FIG. 1 and FIG. 2, reference numeral 1.2 denotes a base plate integrally formed with supporting parts for positioning bearing buttons and parts of a wheel train, etc., respectively.

An elastic locking piece 3a is provided on the side surface of the two main plates 1 and 2.
A locking portion 3 consisting of a locking piece 3b having a T recess is formed, and these are elastically connected to form a case.

The locking piece 3a and the locked piece 3bKd are formed with a tapered portion, and this tapered portion gives a width to the bonding force between the base plates 1 and 2, thereby preventing play in the thickness direction.

The materials of 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:
For example, aluminum die casting may be used, but the material is not limited to the above examples as long as it satisfies the mechanical strength as a base plate and the frictional wear characteristics as a bearing.

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

The stator 6 is integrally pressed into a U-shape from a high magnetic permeability plate material such as a silicon steel plate, and in addition to its original function as a motor, it also serves as the middle plate of a clock mechanism.

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 6a, 6a. A circuit pattern is formed on a substrate 5a that integrally extends one end of the spun bobbin 5, and circuit components such as a crystal oscillator, an integrated circuit, and a trimmer are attached thereto.

When configuring a circuit on the board 5a, the circuit is not limited to the above, and it is also possible to fix a printed circuit board on which circuit components are mounted to the board 5a.

7d rotor, and this rotor ri meshes with the second hand wheel 9 via the second wheel 8, and the second hand wheel 9ri meshes with the minute and seconds wheel 11 via the intermediate wheel 10.

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

14 is a second hand shaft fixed to the second hand wheel 9, 15f''1 minute hand wheel 1
The minute hand pipe is integrated with the 16rt clock wheel 13, and the hour hand pipe is integrated with the 16rt clock wheel 13.

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

In this embodiment, all the buttons except the motor, electric parts, and second hand shaft 14 are 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 stator 6.

As shown in the second diagram, the support part 19ri of the main plate 1 and the bearing part 19
a and a convex guide introduction part 19b formed integrally therewith.
It is becoming more and more.

Guide introducing portion 19bld When the main plate 1 is attached, the tenon portion of the second hand shaft 14 can be smoothly guided to the bearing portion 19a.

The support part 20 has almost the same configuration as the support part 19,
It consists of a bearing part 20a and a guide introduction part 20b, and the intermediate wheel 1
This supports the tenon part of the shaft 21 of the 0.

The support portion of the rotor 7 and second wheel 8 also has substantially the same structure as the support portion 19 described above.

The intermediate axle 21σ is held in the through hole 22 of the stator 6 to prevent it from falling down.

In addition, the lower end surface of the second hand wheel 9 is supported by a spring seat 23.
Due to the elastic force of the spring seat, the second hand shaft 14 is brought into elastic contact with the bearing portion 19a with an appropriate contact pressure.

The upper end of the minute wheel 11 is supported by a through hole 24 formed in the stator 6.

The base plate 2 has a support portion 25 that supports the other end of the intermediate axle 21.
is formed with substantially the same configuration as the support portion 19.

The hour hand via 16 is supported through a through hole 27 formed through a positioning protrusion 26 of the main plate 2.

In addition, the sun wheel 12 has a shaft portion 28 that integrally projects from the main plate 2.
After the stator 6 is attached, it is prevented from coming off by the lower end surface of the stator.

The twisted shaft portion 28 also serves to position the stator 6.

A support button for pivotally supporting the needle driving pinion 18 and a support portion for the loader 7 are formed on the base plate 2.

The shaft portion 17art of the needle drive pinion 18 is supported by the through hole 29 of the curved concave portion of the main plate 1, and is protected in a predetermined posture.

The other support portion of the second wheel & pinion 8 is formed on the stator 6.

The stator 6, which also serves as a middle plate, is held between support columns 30 erected from the main plates 1 and 2.
This support column fixes the stator 6 and at the same time serves as a spacer between the base plates 1.2.

The constituent parts of the watch mechanical body are held by the support parts of buttons 1 and 2 on the main plate, the battery 31 is stored in the storage section 32, and the locking piece 3a engages with the locked piece 3b, thereby holding the watch mechanical body. A is constructed.

A transparent light 34 is bored in the center of the dial in the timepiece exterior body 33, into which the positioning protrusion 26 of the timepiece mechanical body A is fitted, and a pointer pipe and the like protrude toward the front of the dial.

33a [This is a locking projection integrally formed from the exterior body 33, and the positioning of the watch mechanism body AH is also performed by this locking projection.

A pillar 35 is provided protruding from the back surface of the exterior body 33.

The elastic body 36 is made of a leaf spring, and one end of the elastic body 36 is connected to the pillar 35.
It is attached to the tip of the watch body A with a screw 37, and the other end is in elastic contact with the back of the center of the watch mechanism body A.

In another example shown in the third figure, the protrusion 26 of the timepiece mechanical body A is fitted and positioned at the center of the dial of the timepiece exterior body 37, as in the example shown in the second figure.

Furthermore, an elastic body 38 made of elastic rubber or the like is protruded from the back surface of the exterior body 37, and its tip is in elastic contact with the rear surface of the watch mechanical body A at approximately the center thereof.

39 is a transparent body on the front side of the dial.

Further, as a means for preventing rotation of the watch mechanical body A, a through hole 40 is formed in a part of the main plate 2 as shown in FIG. The timepiece mechanical body A may be kept in the correct posture by fitting the two together.

The attachment to the timepiece exterior body is determined by the watch mechanism body All1 protrusion 26, and the timepiece mechanism body A is pressed from the back side by the elastic body 36 or 38 provided on the back surface of the exterior body 33 or 37. This means that it can be firmly attached to a predetermined position on the exterior body.

Particularly, as in this embodiment, when the main plates 1 and 2 also serve as dust covers, and the main plates have a structure in which they are elastically snap-fitted at the locking parts 3 and 5 on the outer periphery without using screws or the like, , the back of the watch mechanical body A is twisted by the elastic body 36 or 38.
By pressing the base plate 1 due to external impact, etc.
, 2 and deformation of the main plates 1 and 2 over time, thereby preventing the central part from bulging, that is, the distance between the bearings from increasing. It is possible to prevent withdrawal.

In this way, according to the present invention, there is no problem in the number of parts, the structure is simple, and the main plate that houses the watch mechanism is compressed from the back, so that the main plate does not deform over time. It has many excellent effects, such as preventing the distance between the bearings from increasing, preventing deterioration in watch performance, making it easy to attach and detach the base plate to a normal case, and improving workability such as assembly.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; Fig. 1 is a plan view with the upper base plate removed, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 is a plan view of the exterior body FIG. 4 is a reduced cross-sectional view showing the means for attaching the pond, and FIG. A... Watch mechanical body, 1, 2... Main plate, 3... Locking part, 3a... Locking piece, 3b... Locked piece which is a recessed part, 19° 20.25. ...Support part, 27.29...Through hole forming support part, 28...Shaft part forming support part, 33.
37...Watch exterior body, 36.38...Elastic body.

Claims (1)

[Scope of utility model registration request] A watch mechanical body supporting a watch train is provided between two plastic main plates formed in a box shape and connected to each other by a locking portion provided on the outer peripheral wall thereof, and the locking portion is located on one side. An elastic locking piece provided on one base plate is formed so as to engage with a locked piece having a recess provided on the other base plate, and an exterior frame body consisting of a front frame and a rear frame is provided. , the timepiece mechanism body is fitted into the rotation prevention means provided on the back surface of the front frame, and the timepiece mechanism body is pressed against the front frame by contacting approximately the center of the back surface of the main plate of the timepiece mechanism body, and the timepiece mechanism body is pressed against the front frame. A timepiece device characterized in that a member that restricts the bulge of the central portion of the main plate toward the rear is fixed to either the front frame or the rear frame.