JPS5815916Y2 - Notification timer - Google Patents

Description

[Detailed explanation of the invention] In this invention, the time is set by manually turning the main shaft in the setting direction by the desired angle (an angle corresponding to the desired setting time period), and then when the hand is released from the main shaft, the main shaft is expanded and set. It is related to a notification timer that rotates at a constant speed in the direction and, when a set time has elapsed, rings a bell repeatedly to notify the user of this fact.
It is also an object of the present invention to provide a notification timer that can be assembled at a low cost with fewer man-hours.

The drawings showing the embodiments of the present application will be described below.

Members denoted by reference numerals 1 to 5 constitute the base of the timer, and 1 is a case, 2 and 3 are base plates, and are integrated in parallel with each other by a plurality of spacers 4.

5 indicates a cover. Next, 6 is the main shaft that is rotatably inserted into the case 1 and the main plates 2 and 3, and 7 is the watch body spring.
The inner peripheral end is fixed to the main shaft 6, and the outer peripheral end is fixed to the main plate 2 via a pin 8.

A stopper pin 9 is fixed to the main shaft 6, and is provided so as to come into contact with a stopper 10 fixed to the case 1 to prevent excessive rotation of the main shaft 6 as described later.

Reference numeral 11 denotes the number one wheel, which is connected to the main shaft 6 via a slip mechanism, as is well known.

Reference numeral 12 denotes a well-known clock mechanism, which is connected to the first wheel 11.

Next, 14 is a cam, which is fitted onto the main shaft 6 so as to be freely movable.

In this cam 14, reference numeral 15 denotes a guide groove, and 16 and 17 refer to coupling pieces 18 disposed to face the ends of the guide groove 15, respectively.
1 and 2 respectively indicate recesses formed in a part of the outer periphery.

This cam is generally manufactured by molding a synthetic resin material.

Next, 19 is a boss fixed to the main shaft 6, and 20 is fitted to the boss 19 so as to rotate integrally therewith.

The driving plate is made of a metal plate.

21 is a drive piece formed by bending a part of the drive plate 20;
As shown in the figure, it is placed in a guide groove 15 in the cam 14.

Reference numeral 22 denotes a hoisting 1 drive wheel fitted to the boss 19 so as to freely rotate, and gear teeth are carved on the outer periphery.

Reference numeral 23 denotes an engagement piece formed by cutting and bending a part of the drive wheel 22, and is arranged to face the drive piece 21 as clearly shown in FIG.

Next, 26 is a subshaft that is rotatably inserted through the main plates 2 and 3, 27 is a winding spring for striking the bell, and the inner peripheral end is attached to the subshaft 26.
The outer peripheral end is fixed to the base plate 3 via a pin 28.

Reference numeral 29 denotes a linking gear fixed to the subshaft 26, which is meshed with the winding 1 drive wheel 22.

30 is a gear, which is connected to the subshaft 26 via a one-way clutch, so that when the subshaft 26 or the mainspring 27 is rotated in the direction to wind up the mainspring 27, the gear 30 does not rotate together with the subshaft 26; 26, the gear 30 is adapted to co-rotate with the countershaft 26 when rotated in the opposite direction.

Next, numeral 31 is an escape wheel meshed with the gear 30, and 32 is a pallet pallet which is placed in opposition to the escape wheel 31, and which is pivotally connected to the base plates 2 and 3 via a pallet shaft 33.

34 is a swing stop lever, the free end 34a of which is connected to the cam 14.
It is positioned so that it can come into contact with.

35 is a connecting piece.

Anchor ankle 32, swing stop lever 34, connecting piece 35
The shape is partially formed by bending sheet metal.

Next, 37 is a bell support plate formed by cutting and raising a part of the cover 5, and 38 is a bell, which is fixed to the bell support plate 37 with a mounting rivet 39.

Reference numeral 40 denotes a piece of bell material, which is configured to swing integrally with the pallet pallet 32 by fitting its shaft hole 40a to the pallet shaft 33 and its interlocking hole 40b to the coordinating piece 35, respectively. .

41 indicates Uchiko. Next, the operation of the timer with the above configuration will be explained.

(1) When setting the time by rotating the main shaft in the setting direction As shown in Figs. 3 and 6, when the main shaft 6 is turned in the direction of the arrow, that is, in the setting direction, the watch winding spring 7 be rolled up.

At the same time, the first drive plate 20 is also rotated in the same direction.

This rotation of the drive plate 20 brings the drive piece 21 into contact with the engagement piece 16 of the cam 14, causing the cam 14 to rotate in the same direction.

Further, the drive piece 21 also comes into contact with the engagement piece 23 of the hoisting drive wheel 22, and the first drive wheel 22 also rotates in the same direction.

This rotation is transmitted to the subshaft 26 via the interlocking gear 29,
This rotation of the subshaft 26 causes the winding spring 27 for striking the bell to be wound up.

(2) After setting the time, when you release your hand from the main shaft and allow it to freely rotate, in this case, as shown in Fig. 4, the The force causes the main shaft 6 to rotate in the direction of the arrow, that is, in the failure direction.

This rotation is performed slowly and at a constant speed by the well-known action of the clock mechanism 12.

Due to such rotation of the main shaft 6, the drive piece 21, which rotates integrally with the main shaft 6, moves within the guide groove 15 of the cam 14, and eventually comes into contact with the engagement piece 17.

Then, the cam 14 also begins to rotate integrally in the same direction as the main shaft 6.

On the other hand, in this case, the free end 34a of the swing stop lever 34 comes into contact with the high step part of the cam 14, and the free vibration of the pallet pallet 32 is prevented.

Therefore, the escape wheel 31 is stopped while being engaged with the pallet wheel 32.

In this case, the biasing force of the winding spring 27 for striking the bell is applied to the subshaft 2.
6. It is applied to the escape wheel 31 via the gear 30, but since the escape wheel 31 remains stopped, the winding spring 27 for striking the bell does not unwind, and therefore the linking gear 29 and the drive wheel 22 are in a stopped state. keep it.

(3) When the set time has elapsed, in this case, the stopper pin 9 fixed to the main shaft 6 comes into contact with the stopper 10, and the rotation of the main shaft 6 in the failure-determining direction is stopped.

On the other hand, in this case, the free end 34a of the swing stop lever 34 faces the recess 18 of the cam 14, as shown in FIG.

This recess 18 is located at the free end 34 of the swing stop lever 34.
Since it is formed in a shape that does not obstruct the swing locus of a, the ankle 32 can freely vibrate.

Therefore, as shown in FIGS. 5 and 7, the secondary shaft 26,
Due to the biasing force of the mainspring 27 applied to the escape wheel 31 via the gear 30, the pallet wheel 32 vibrates at a constant period.

The bell material piece 40 also vibrates due to the vibration of the pallet pallet 32,
Hit Bell 38 repeatedly.

In this state, the escape wheel 31 is fed in increments by the vibration of the pallet pallet 32.

Therefore, the subshaft 26 also rotates (in the direction of winding the mainspring 270).

This rotation is transmitted to the drive wheel 22 via the linking gear 29.

As the drive wheel 22 rotates, the engagement piece 23 eventually engages the drive piece 21.
comes into contact with.

Then, the drive wheels 22 stop.

Therefore, the escape wheel 31 stops rotating, the pallet pallets 32 stop vibrating, and the repeated hitting of the bell ends.

As described above, in this invention, when the set time has elapsed after the main shaft 6 is rotated in the set direction, the recess 18 of the cam 14 attached to the main shaft 6 is moved to the free end 34 of the swing stop lever 34.
a, and as a result, the swing stop lever 34 becomes swingable, allowing the pallet pallet to swing freely.
The bell piece 40 interlocked with the bell 38 has the feature of repeatedly hitting the bell 38 to notify that a predetermined time has elapsed.

Moreover, in this case, in the configuration of the present invention, the escape wheel 3
1 and the swing stop lever 3.
4 is just a formality, so even if it is subjected to repeated rocking as described above, its structure is strong and will not break down even after years of use.

Moreover, because of such a configuration, the number of assembly steps during assembly is small, which is highly effective in reducing assembly costs.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and Fig. 1 is an exploded perspective view, Fig. 2 is a sectional view taken along the line ■-H, and Figs. 3 to 7 are illustrations of main parts for explaining the operating state. and a plan view of the main parts. 6...Main shaft, 14...Cam, 18...
... Recessed portion, 21 ... Drive piece, 22 ...
... Hoisting drive wheel, 26 ... Subshaft, 31 ...
...Escape wheel, 32...Ankle, 34...
... Swing stop lever 40 ... Bell material piece, 3
8...Bell.

Claims (1)

[Scope of utility model registration request] A winding spring for a watch is attached to the main shaft which is rotatably attached to the base, and the main shaft is equipped with a clock mechanism that is designed to keep the return speed of the main shaft in the unfolded setting direction constant. In addition, a cam is attached to the main shaft,
When the main shaft is rotated in the set direction, a biasing force is accumulated in the winding spring, and when the main shaft is made freely rotatable, the cam is rotated at a constant speed in the set direction,
In addition, in the notification timer, which is designed to strike a bell repeatedly after a set time has elapsed, a driving piece is fixed to the main shaft, and a hoisting 1 driving wheel is attached so as to be freely rotatable, and these driving pieces and the driving The wheel is connected so that when the drive piece is rotated in the setting direction, the drive wheel rotates together, and when the drive piece is rotated in the unfolded setting direction, both are in a non-coupled state. The subshaft is rotatably mounted, and a winding spring for striking a bell is interposed between the subshaft and the base body, and the subshaft is capable of being driven by the first winding drive wheel. When they are connected and the main shaft is rotated in the setting direction, the subshaft also rotates to accumulate biasing force on the bell striking winding spring, and the subshaft is further provided with a one-way clutch. The escape wheel is connected to the escape wheel through the escape wheel, and a pallet pallet is placed in opposition to the escape wheel.Furthermore, a swing stop lever formed on a portion of the pallet extends from a part of the pallet, and its free end is positioned so as to be able to come into contact with the cam, further comprising a bell and a bell piece provided so that the bell can be struck, the bell piece and the pallet pallet being movably connected; Furthermore, a part of the outer periphery of the cam is provided with a lock that is attached to the free end of the swing stop lever when a predetermined period of time has elapsed during the process of rotating the main shaft in the setting direction and then rotating it in the extension setting direction. A concave portion is formed in the opposing portion, and the shape of the high step in the cam is such that it prevents free vibration of the pallet pallet when the free end of the swing stop lever faces the high step. In addition, the shape of the recessed portion is formed in such a shape that the swinging locus of the free end of the swinging stop lever is not obstructed so that the pallet pallet can freely vibrate when the swinging stop lever faces the recessed portion. A notification timer characterized by: