JPS6336298Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a timepiece mechanical body with an indicator mechanism.

(Prior art) Conventionally, in the mechanical body of an alarm clock that has three main plates: an upper plate, a middle plate, and a lower plate, the procedure for assembling a clock train between the main plates is to first arrange a spring on the lower plate. The lower end of each shaft of the low speed gear train, such as the indicator wheel, hour wheel, date wheel, and minute wheel, is supported by a lower plate, and the upper end of each shaft is supported by a middle plate. Then, with the middle plate held down, place the intermediate wheel on top of it,
Assembly is possible by bearing the lower end of each shaft of the second hand wheel, second wheel, and other so-called high-speed gear train, bearing the upper end of each shaft with an upper plate, and fixing the upper plate and lower plate with screws, etc. It had been completed.

(Problem that the invention aims to solve) However, since the above-mentioned middle plate is not fixed to the lower plate at all, it is used for the spring force that presses the indicator wheel from below toward the hour hand wheel. , the minute wheel and even the middle plate are floating. For this reason, it is necessary to constantly hold down the middle plate with tweezers, etc. against the repulsion of the age spring, which makes the assembly process troublesome and inefficient, and also makes it difficult to ensure that each gear train is assembled correctly. There were also problems with certainty.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a timepiece mechanical body with a guide mechanism that has good assembly workability and allows each wheel train to be reliably assembled.

(Means for solving the problem) In order to achieve the above purpose, in the present invention, the upper plate,
In a watch mechanical body in which a watch wheel train is supported by a middle plate and a lower plate, a constant speed rotating wheel that rotates at a constant speed and a constant speed rotating wheel are provided between the middle plate and the lower plate. a reference wheel coaxially facing the reference wheel and rotatable by manual operation; a protrusion provided to be relatively fitable on one and the other of the constant speed rotating wheel and the reference wheel, respectively; A groove portion and an age spring that biases one of the constant speed rotating wheel and the reference wheel toward the other side and applies a force to separate the middle plate from the lower plate by this bias, and the middle plate A cylindrical body is formed on one side of the cylindrical body and the lower plate, and a shank portion that can be frictionally fitted to the cylindrical body is formed on the other side, and the frictional coupling force between the cylindrical body and the shank portion is as described above. The force is set to be larger than the force that separates the middle plate of the age spring from the lower plate.

(Function) Therefore, after arranging the Agespring on the lower plate and installing the reference wheel and constant speed rotating wheel on it, if the middle plate is connected to this lower plate by the shaft part and the cylinder, the ring The row and middle plate are stabilized without being lifted up by the spring force of the age spring, and the subsequent work of assembling a predetermined wheel train on the middle plate can be performed quickly and easily.

(Example) Hereinafter, details of the present invention will be explained according to an example shown in the drawings.

A timepiece mechanical body A with a reference mechanism according to the present invention has three main plates, that is, a lower plate 1, a middle plate 2, and an upper plate 3, which are arranged at regular intervals.

Between the lower plate 1 and the middle plate 2, there is an indicator wheel 4a coaxially arranged around the gear train 4 of the low speed stage, that is, the second hand shaft 5, an hour hand wheel 4b, a minute hand wheel 4c, and a date wheel as constant speed rotating wheels. A wheel train such as a rear wheel 4d is incorporated.
A protrusion 4a1 is integrally provided on the indicator wheel 4a, and a groove 4b1 that can be fitted with this protrusion is integrally formed on the hour hand wheel 4b in a relative positional relationship. The alarm setting is performed by manually operating a hand rotating shaft (not shown) and turning the reference wheel 4a. When the alarm setting time comes, the protrusion 4a1 of the reference wheel 4a fits into the groove 4b1 of the hour hand wheel 4b, causing an alarm. It's starting to make sounds.

A spring 6 is interposed between the lower plate 1 and the indicator wheel 4a, and this spring only presses (energizes) the indicator wheel 4a toward the hour wheel 4b with a constant spring force. At the same time, it acts as a force to separate the middle plate 2 from the lower plate 1.

Incidentally, on the lower plate 1, there are at least two cylindrical bodies 7, 7, . 8
...is hanging down. The cylinder bodies 7, 7, . . . and the shaft portions 8, 8, . In addition, the shaft parts 8, 8... are provided with step parts 8a, 8a... in the middle, and when the shaft parts are press-fitted into the cylinder bodies 7, 7..., the step parts are engaged with the edges of the cylinder bodies and lowered. The distance between the main plate 1 and the middle plate 2 can be determined. Of course, positioning is done by cylindrical body 7.
The opening end surface may be brought into direct contact with the intermediate plate 2.

Further, other shaft portions 9, 9, .
0, 10... are hanging down. Therefore, the distance between the middle plate 2 and the upper plate 3 is determined, and movement in the vertical direction is restricted.

Between the middle plate 2 and the upper plate 3 is a high-speed gear train 11.
That is, a center wheel & pinion 11a, a second hand wheel 11b, an intermediate wheel 11c, etc. are provided.

Further, a cylinder 12 is provided upright on the lower plate 1 as a connecting means and has a length that reaches up to the upper plate 3. A tap screw 13 is screwed into this cylinder from above the upper plate 3 to connect the lower plate 1. The upper plate 3 is connected and fixed.

Next, the assembly of the timepiece mechanical body constructed as described above will be explained. At first, put Agebane 6 on the lower plate 1, and reference car 4.
After assembling the hour wheel 4b, minute wheel 4c, date wheel 4d, etc. in sequence, the shaft portions 8, 8 of the middle plate 2 are press-fitted into the cylinders 7, 7 of the lower plate, and the low speed gear is set. Finish installing the gear train 4. At this stage, the spring force of the age spring 6 is acting on the middle plate 2, but the middle plate 2 is fixed at a predetermined distance from the lower plate 1 due to the frictional coupling force between the cylinder body 7 and the shaft part 8, thereby preventing it from lifting up. It will never occur.

Next, the second wheel 11a and second hand shaft 11b are placed on the middle plate 2.
After installing the intermediate wheel 11c, etc., the upper plate 3
The shafts 9, 9... of the middle plate 2 are press-fitted into the cylindrical bodies 10, 10... of the upper plate 3, and the tap screws 13... are inserted into the cylinders of the lower plate 1 from above the upper plate. The body 12 is screwed to complete the assembly.

In this way, the shaft parts 8, 8... of the middle plate 2 are press-fitted into the cylinder bodies 7, 7... of the lower plate 1, so that the gear train 4 of the low gear
Moreover, the middle plate can be prevented from floating up by the age spring 6, and the front gear train 11 of the high speed stage, which is then assembled onto the middle plate 2, can be assembled easily and reliably.

(Effects of the invention) As described above, according to the configuration of the watch mechanical body with a reference mechanism of the present invention, the age spring arranged between the lower plate and the middle plate, the reference wheel, the low-speed rotation wheel (hour hand wheel), etc. Since lifting of the low-speed gear train is prevented even during assembly by the friction fit between the cylinder and the shaft, it goes without saying that the low-speed gear train can be assembled reliably. The high-speed gear train can be assembled onto the middle plate very easily and efficiently, and the practical effect on the assembly of the three-piece base plate structure with a reference mechanism is truly significant. .

[Brief explanation of the drawing]

The drawing is a developed sectional view showing an embodiment of the present invention. A...Clock mechanical body with guide mechanism, 1...Lower plate, 2
...Middle plate, 3...Upper plate, 4...Low gear train, 4
a... Reference wheel, 4a1... Protrusion, 4b... Constant speed rotation wheel (hour hand wheel), 4b1... Groove, 6... Age spring, 7... Cylindrical body, 8... Shaft, 11... High speed stage train of wheels.

Claims (1)

[Claims for Utility Model Registration] A clock train is supported by an upper plate, a middle plate, and a lower plate, and between the middle plate and the lower plate is a constant-speed rotating wheel that rotates at a constant speed. and a reference wheel which is coaxially opposed to the constant speed rotating wheel and is rotatable by manual operation, and which is fitted relatively to one and the other of the constant speed rotating wheel and the reference wheel, respectively. The projections and grooves that can be provided, and the age spring that biases one of the constant speed rotating wheel and the reference wheel toward the other side and applies a force to separate the middle plate from the lower plate by this biasing. A cylindrical body is formed on one of the middle plate and the lower plate, and a shaft portion that can frictionally fit into the cylindrical body is formed on the other side, and the cylindrical body and the shaft portion are formed on the other side. A timepiece mechanical body with a guide mechanism, characterized in that the frictional coupling force of is set to be larger than the force that separates the middle plate of the agespring from the lower plate.