JPS6239340Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a temporary locking mechanism for a jump control lever that is elastically connected to a gear constituting a timepiece wheel train, and the temporary locking of the jump control lever is automatically released during assembly of the watch mechanism. It is characterized by

Conventionally, gears constituting a clock train train, for example, a jump control lever has been engaged with the gears of a reference wheel in order to allow the reference wheel to rotate in only one direction or to clickly operate the rotation of the reference wheel. Ta. An elastic member for pressing the guide wheel with an appropriate pressing force is engaged with the jump control lever, and the jump control lever is biased in a predetermined direction. For this reason, when assembling a watch wheel train including a jump control lever and a reference wheel, a jig is used to temporarily fix the jump control lever in a predetermined position in order to facilitate this assembly work.

FIG. 1 shows a state in which the jump control lever is temporarily fixed with a jig. In the figure, a jump control lever 6 is swingably supported on a support shaft 4 of the base plate 2, and the jump control lever 6 is engaged with a jig pin 10 extending from a through hole 8 drilled in the base plate 2. has been done. On the other hand, the elastic member 12 is attached to the support column 20 with one end thereof being engaged with the protrusion 14 and the other end thereof being engaged with the engagement portions 16 and 18 of the jump control lever 6, respectively. Jump control lever 6 is arrow A
However, by engaging with the jig pin 10, it is temporarily fixed at a predetermined position.

With this conventional mechanism, a jig had to be used when assembling the watch wheel train, making the assembly process cumbersome.
In addition, jigs must be prepared for each model, which poses a problem in jig management.

The present invention was made to solve the above conventional problems, and its purpose is to temporarily lock the jump control lever without using a jig when assembling a watch wheel train, and to release the temporary lock. It is characterized by being performed automatically.

In order to achieve this object, the present invention provides a timepiece equipped with a jump control lever that is elastically connected to the gears constituting the watch wheel train, including an elastically deformable temporary stopper piece extending from the main plate near the jump control lever; a temporary fixing release pin formed on a member in a fixed relationship with the base plate so as to be able to engage with the temporary fixing piece;
When the jump control lever is assembled, it is engaged with the temporary fixing piece to prevent engagement with the gear, and the base plate and the member in a fixed relationship with the base plate are coupled to prevent the jump control lever from engaging with the gear. The temporary fixing release pin engages with the temporary fixing piece and presses and moves the temporary fixing piece toward the base plate, thereby making it possible to release the engagement between the jump control lever and the temporary fixing piece, and also to release the engagement between the jump control lever and the gear. It is characterized by being able to engage.

The present invention will be described below based on an embodiment of the present invention shown in the drawings. Components that are the same as those in FIG. 1 are given the same reference numerals and detailed explanations will be omitted.

FIG. 2 shows a state in which the jump control lever 6 is temporarily fixed at a predetermined position. A through hole 21 is bored in the base plate 2, and a temporary fixing piece 22 is installed inside the through hole 21.
is arranged to extend. As shown in FIG. 3, the temporary fixing piece 22 is made of an elastic member that is formed integrally with the base plate 2 and bent upward in the drawing. A release pin 26 is protruded from a member fixed to the base plate 2, such as the case 24, and the tip of the release pin 26 presses the temporary fixing piece 22 to a predetermined position when the base plate 2 and the case 24 are combined. can be done. On the other hand, the positioning pin 28 engages with the jump control lever 6 and serves to hold the jump control lever 6 in a predetermined position.

Next, the effects of the illustrated embodiment will be explained.

When the jump control lever 6 is pivotally supported on the support shaft 4 and the elastic member 12 is engaged with the jump control lever 6, the jump control lever 6 is attached to the temporary fixing piece 2 as shown in FIG.
2, thereby temporarily fixing the jump control lever 6 to a position where it cannot engage with the reference wheel 30. In this state, when the reference wheel 30 and other clock train wheels (not shown) are assembled, and the main plate 2 and the case 24 are connected as shown in FIG.
presses and moves the temporary fixing piece 22 in the direction of arrow B. As a result, the engagement between the jump control lever 6 and the temporary fixing piece 22 is automatically released as shown in FIG. Car 30 is engaged.

According to the illustrated embodiment, since the temporary fixing piece 22 is integrally formed with the main plate 2, a jig for temporarily fixing the jump control lever 6 is not required when assembling the timepiece mechanism. In addition, since the release of the temporary locking of the jump control lever 6 is automatically performed at the same time as the case 24 is connected to the base plate 2, the number of assembly steps is greatly reduced.

In the illustrated embodiment, the temporary fixing piece 22 is integrally formed with the base plate 2, but it may be formed separately. Further, although the temporary fixing piece 22 is configured to be pressed and moved in the direction of the base plate 2 by the release pin 26, the temporary fixing piece 22 is configured to be pressed and moved in a direction parallel to the base plate 2. good. Further, in the illustrated embodiment, the member fixedly connected to the main plate 2 is the case 24, but in other embodiments, the main plate may be used to support the timepiece wheel train.

As explained above, according to the present invention, a temporary fixing piece for temporarily fixing the jump control lever is provided on the main plate, and the temporary fixing piece is pressed and moved when a member in a fixed relationship with the main plate is combined with the main plate. and the temporary locking of the jump control lever is released. Therefore, there is no need for a jig for temporarily fixing the jump control lever, and the conventional jig management is no longer necessary. Furthermore, since the number of assembly steps is greatly reduced, the assembly work time can be shortened.

[Brief explanation of the drawing]

Figure 1 is a plan view of the conventional system, Figure 2 is a plan view of the jump control lever in a temporarily locked position, Figure 3 is a sectional view of the jump control lever in a temporarily locked position, and Figure 4 is a top view of the jump control lever in a temporarily locked position. FIG. 5 is a plan view showing the engaged state of the jump control lever and the reference wheel, and FIG. 5 is a sectional view showing the engaged state of the jump control lever and the reference wheel. 2... Base plate, 6... Jump control lever, 22... Temporary fixing piece, 24... Case, 26... Release pin, 30
...Reference car.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A timepiece equipped with a jump control lever that is elastically connected to a gear constituting a timepiece wheel train; , a temporary fixing release pin formed on a member fixed to the main plate so as to be able to engage with the temporary fixing piece, and the jump control lever being engaged with the temporary fixing piece when the jump control lever is assembled. Therefore, engagement with the gear is prevented, and the temporary fixing release pin engages with the temporary fixing piece by coupling the base plate and a member in a fixed relationship with the base plate,
By pressing and moving the temporary fixing piece in the direction of the base plate, the engagement between the jump control lever and the temporary fixing piece can be automatically released, and the engagement between the jump control lever and the gear can be made possible. Temporary locking mechanism for the jump control lever. (2) In the mechanism set forth in claim 1 of the utility model registration claim, the member in a fixed relationship with the main plate is a main plate or a case capable of supporting a watch wheel train, and the temporary fixing of the jump control lever. mechanism. (3) A temporary fixing mechanism for a jump control lever, characterized in that the temporary fixing piece is formed integrally with the main plate in the mechanism described in claim 1 of the utility model registration claim.