JPS6126945Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a snooze mechanism for an alarm clock that temporarily stops the alarm notification in the alarm clock and returns it after a few minutes.

Generally, a snooze mechanism in an alarm clock is provided with a snooze gear that meshes with a gear train of the clock, and when a snooze set operation is performed, an alarm notification contact is opened and the above-mentioned meshing is started, and when this meshing has elapsed for a predetermined period of time, The alarm contact is closed again. By the way, in the case of the above configuration, the snooze gear must be moved in the opposite direction to the one during snooze when setting the snooze, but the snooze gear and the clock's gear train do not mesh during this time as well. If the snooze gear remains engaged, the load placed on the gear train of the watch will be large, so when setting the snooze gear, the snooze gear is moved to the position where it starts meshing with the gear train of the watch, while being separated from the gear train. A device that prevented load from being applied to the gear train of a clock was developed in 1974.
-Disclosed in Publication No. 12375.

When you press the snooze lever, which has an integrated snooze gear, the snooze
The slider slides and swings, and the swing moves the rack away from the gear train of the watch, and the sliding moves the rack closer to the gear train. If the operating force applied to the snooze lever is removed, the spring that biases the snooze lever in the direction opposite to the above-mentioned rocking direction will mesh with the gear train of the clock. The snooze lever is moved.

With this device, as mentioned above, when the snooze lever is pushed in to set the snooze, the rack is separated from the gear train, so no load is applied to the gear train, and the rack is engaged with the gear train of the watch, allowing the rack to set the snooze lever. Since the spring biases the snooze lever in the direction in which the snooze lever moves, it has the characteristic that no load is applied to the gear train of the watch even during the snooze period.

However, in this conventional example, when the push-in operation of the snooze lever is stopped, the spring connected to the snooze lever not only exerts a spring force in the direction of moving the rack in the direction of meshing with the gear train, but also exerts a spring force on the rack. Since the spring force is exerted in the direction of returning the gear to the initial position, the rack not only moves in the direction of meshing with the gear train, but also moves in the direction of returning to its original position. It is difficult to maintain a constant position at which the gear train and the gear train start meshing, and the snooze time is not stable. Furthermore, when the gear train and the rack start meshing, an impact load is applied to the teeth of both gears. It has the problem of being easy to store.

The present invention was devised in consideration of these points, and its purpose is to maintain accurate snooze time and to prevent time burdens from being placed on the snooze setting. Provides a snooze mechanism for the alarm clock.

Therefore, the present invention has a contact part that closes the alarm notification contact in conjunction with the indicator wheel, and a tooth of the gear with missing teeth in the transmission pinion that is engaged with the gear train of the clock. A snooze lever that maintains a pressed state against the contact portion by meshing one end of the toothed gear with the transmission pinion;
A snooze mechanism includes a snooze spring that biases the snooze lever in the return direction, and a portion of the force of the snooze spring is set in the rotational direction at the meshing part between the partially toothed gear and the transmission pinion via the snooze lever, The fan-shaped partially toothed gear has an elongated hole that is loosely fitted to the support shaft, and has a first engaging portion that receives the spring force of the snooze spring via the snooze lever, and a first engaging portion that receives the spring force of the snooze spring through the snooze lever, and a toothed gear that moves away from the transmission pinion. The snooze lever is provided with a second engaging portion that receives the operating force via the snooze lever, and the snooze spring is a torsion coil spring that has one end engaged with the snooze lever and the other end engaged with a partially toothed gear. The first engaging portion of the partially toothed gear and the engaging portion with the snooze spring are arranged on both sides of a line connecting the spindle of the partially toothed gear and the shaft of the transmission pinion. The gear is characterized in that it is biased to the position where it starts meshing with the transmission pinion by direct engagement with the snooze spring, and the operation input when setting the snooze is by pressing the snooze lever. It is assumed that the force of the snooze spring not only acts in the direction of returning the snooze lever, but also is transmitted to the partially toothed gear via the snooze lever and directly to the partially partially toothed gear. When the snooze lever is operated to set the snooze, the spring force is not transmitted from the snooze spring to the partially toothed gear via the snooze lever, and only the force directly transmitted from the snooze spring to the partially toothed gear acts on the partially toothed gear. This is how it was done.

The present invention will be described in detail below based on illustrated embodiments.
In the figure, reference numeral 1 denotes a gear train of a watch.A first indicator wheel 7 is integrally formed on an hour hand shaft 11 in this gear train 1, and the minute hand A second setting wheel 1 has a second reference wheel 8 meshingly connected to the shaft 12 and meshing with the first setting wheel 9.
It is relative to 0. If the projections 39 and 39 of the first and second reference wheels 7 and 8 are aligned with the respective engagement holes 40 of the first setting wheel 9 and the second setting wheel 10, the first and second reference wheels 7 and 8 The contact spring 6 that is in contact moves upward, and the contact spring 6 contacts the fixed contact 16, thereby closing the alarm contact formed by both of them and operating an alarm alarm means such as a bell or a buzzer. In contrast to the alarm mechanism configured in this way, the snooze mechanism consists of a snooze lever 2 that is pressed and operated, a gear 4 provided on the slip gear 14 between the minute hand shaft 12 and the second hand shaft 13, and this gear 4. When the snooze lever 2 is operated, the partially toothed gear 3 engages with the snooze lever 2.
and a torsion coil with both ends locked to the partially toothed gear 3.
It is composed of a spring-shaped snooze spring 5. The snooze lever 2 is formed in an L-shape and is rotatably supported by a shaft 18 in the vicinity of its bent portion, and includes a protrusion 22 and a protrusion 23 having a sloped surface pushing down the contact spring 6 at one end. It has a spring receiving pin 25 which is provided with an engaging part 26 for engaging the partially toothed gear 3 at the other end, and between this engaging part 26 and the shaft 18 one end of the snooze spring 5 is locked. are doing. Protrusion 2
2 is provided at one end of a two-pronged elastic piece 21 that is integrally formed parallel to one end of the snooze lever 2 having a protrusion 23; A pressing portion 24 for pressing and driving a contact spring 15 for dial illumination is provided at one end of the dial.

The partially toothed gear 3 is not disc-shaped, but the toothed portion is fan-shaped to reduce the space it occupies, and the teeth are not provided along the entire circumference of the fan-shaped portion, but at one end. It is formed with a toothless part 31 left in the part. The partially toothed gear 3 is supported by loosely fitting a long hole 32 into the support shaft 17, which is long in the direction connecting the teeth and the support shaft 17. A triangular portion is provided. A total of four pins 33, 34, 35, and 36 are provided in the triangular portion. long hole 3
A line connecting the lever receiving pin 35 and the positioning pin 36 located on the longitudinal extension line of 2 and protruding from the front and back, and the shaft 17 of the snooze lever 2 and the shaft of the transmission pinion 4, which is closer to the shaft 18 of the snooze lever 2 than the shaft 17. There are four locking pins 33 located on one side and a spring locking pin 34 located on the other side, and one end engaging portion 26 of the snooze lever 2 is located between the lever receiving pin 35 and the locking pin 33. The other end of the snooze spring 5 is locked to a spring locking pin 34. The spring force _F1 that this snooze spring 5 applies to the partially toothed gear 3 via the spring locking pin 34 is determined by the distance between the shaft 19 and the support shaft 17 of the snooze spring 5. Since the distance is made longer, it works to rotate the partially toothed gear 3 in the clockwise direction in FIG. On the other hand, the spring force P exerted by the other end of the snooze spring 5 in the direction of returning the snooze lever 2
The spring force is applied to the partially toothed gear 3 via the locking pin 33.
F ₂ works to rotate it counterclockwise. As shown in FIG. 5, the distance a between the shaft 19 of the snooze spring 5 and the spring receiving pin 25 of the snooze lever 2 is shorter than the distance b between the shaft 19 and the spring locking pin 34. In addition, the lever ratio between the distance c between the shaft 18 of the snooze lever 2 and the spring receiving pin 25 and the distance d between the spring receiving pin 25 and the locking pin 33 is expressed as F ₁ =P・a/b ＜ _F2
Since it is set so that =P・c/(c+d), the partially toothed gear 3 and transmission pinion 4 are normally disengaged by spring force _F2 against spring force _F1 . It is said that

When the first and second reference wheels 7, 8 are aligned with the first and second setting wheels 9, 10, respectively, the contact spring 6 is restored and comes into contact with the fixed contact 16 to operate the alarm notification means, and if the elastic piece 21 of the snooze lever 2 is lightly pressed, the elastic piece 21 first bends and pushes the contact spring 15 to contact the fixed contact 16, turning on the lamp for illuminating the dial. When the elastic piece 21 is pressed, the elastic piece 21 bends and its protrusion 22 pushes down the contact spring 6 to open the alarm notification contact, and the elastic piece 21 pushes the protrusion 23 and moves it to the depressed position of the contact spring 6, rotating the snooze lever 2 against the snooze spring 5. This rotation of the snooze lever 2 causes the concave arc-shaped sliding surface 27 of the engagement portion 26 to separate from the locking pin 33, and the spring force F 2 applied by the snooze spring 5 to the missing tooth gear 3 via the snooze lever 2 is reduced by _1/2 .
In order to release the missing tooth gear 3 from the
The spring force _F1 from the snooze spring 5 rotates the pinion 4 in the clockwise direction in the figure until it hits the pinion 4.
In this state, when the snooze lever 2 is released from the depression, the spring force _F2 causes the toothless gear 3 to return to its original position, and the snooze lever 2 also returns to its original position, turning off the lamp. However, if the snooze lever 2 is further depressed, the convex arc-shaped sliding surface 2 of the engagement portion 26 will return to its original position as shown in FIG.
8 pushes the lever receiving pin 35 and moves the missing tooth gear 3 in a direction away from the transmission pinion 4 against the spring force _F1 . In order to come off from the transmission pinion 4 by this movement, the positioning pin 36 of the missing tooth gear 3 is rotated by the spring force _F1 so that the positioning pin 36 is rotated by the stopper 2 of the case.
The lever receiving pin 3 is pressed against the sliding surface 28 until it abuts against the
If the pushing force of the snooze lever 2 is removed at this point, the force F2 from the snooze lever 2 is not applied to the missing tooth gear 3, so the force _F1 directly applied from the snooze spring 5 causes the force _F1 to rotate clockwise.
As a result, the missing tooth gear 3 moves and brings its missing tooth portion 31 into contact with the transmission pinion 4. The force F2 transmitted to the missing tooth gear 3 via the snooze lever ₂ rotates the missing tooth gear 3 counterclockwise in the figure from the state in which the missing tooth portion 31 is in contact with the transmission pinion 4, so that the missing tooth gear 3 meshes with the transmission pinion 4 as shown in FIG. 7. The elastic piece 21 also returns to its original position, releasing the pressure on the contact spring 15 and turning off the lamp. After this, the missing tooth gear 3 gradually rotates counterclockwise due to the rotation of the transmission pinion 4, which is linked to the rotation of the gear train _1. Since this rotational direction is the same as the rotational biasing direction that the missing tooth gear 3 receives from the spring force F2, the gear train 1
When the gear 3 rotates due to the engagement with the transmission pinion 4, the locking pin 3
3 comes into sliding contact with the concave arc-shaped sliding surface 27, gradually rotating the snooze lever 2 in the return direction. Then, just before the meshing between the partly toothed gear 3 and the transmission pinion 4 comes out, the protrusion 22 at the tip of the elastic piece 21 has already come off the contact spring 6, and the contact spring 6 is being pressed down only by the protrusion 23, and when this protrusion 23 comes off the contact spring 6 due to the rotation of the snooze lever 2, the alarm notification contact between the contact spring 6 and the fixed contact 16 is quickly engaged even if the rotation of the snooze lever 2 is very slow, and the alarm notification means is activated again. When the meshing between the partly toothed gear 3 and the transmission pinion 4 comes out, the spring force _F2 causes the partly toothed gear 3 to rapidly rotate counterclockwise,
The snooze lever 2 also rapidly rotates back to its original position. If the protrusion 23 comes off the contact spring 6 at this time, the contact spring 6 also rapidly enters the fixed contact 16 in this case.

Here, both ends of the snooze spring 5 in the form of a torsion coil spring are engaged with the snooze lever 2 and the partially toothed gear 3, and the snooze lever 2 is returned to its original position, and the partially toothed gear 3 is moved in the direction of meshing with the transmission pinion 4. By using this snooze spring ₅ to apply the spring force F2 to prevent an increase in the load on the gear train 1 of the watch, the number of parts is reduced, and the contact spring 6 is pushed down. If only the protrusion 22 has the necessary slope, the slope will not allow the alarm notification contact to quickly engage when it comes off the contact spring 6 when the snooze lever 2 rotates at a very low speed. A protrusion 23 is also provided, and when the snooze is set, the protrusion 22 presses down the contact spring 6 and pushes the protrusion 23 above the contact spring 6, and when the snooze is over, the protrusion 22 pushes the elastic piece 21. Since it is located at the tip, the projection 22 has already come off from the contact spring 6 when the elastic piece 21 returns, and the contact spring 6 is pushed down only by the projection 23, which has no slope.
A slight movement of the protrusion 23 causes the contact spring 6 to rapidly come into contact with the fixed contact 16.

As described above, in the present invention, the partially toothed gear moves away from the transmission pinion during the snooze set, so no load is applied to the gear train of the watch.
Also, during the snooze time, the partially toothed gear is spring-biased in the direction of movement by the input from the clock's gear train, so there is no load on the clock's gear train even during the snooze time. Yes, and when you stop pushing the snooze lever during snooze set, the force that the snooze spring is transmitting to the partially toothed gear via the snooze lever, that is, the force that attempts to return the partially toothed gear to its initial position, is not acting. First, since the only force acting on the partially toothed gear is the force that it receives directly from the snooze spring to move it in the direction of meshing with the transmission pinion, the meshing starting position between the partially toothed gear and the transmission pinion is The snooze time is always constant and accurate, and there is no impact load applied to the teeth between the partially toothed gear and the transmission pinion when they start meshing. Although the snooze lever and the partially toothed gear are separate members so that the snooze lever does not operate when moving to the engagement position with the pinion, it is difficult to return the snooze lever and the partially partially toothed gear. The spring force for moving the partially toothed gear to the meshing position with the transmission pinion can be obtained only by the snooze spring, which is a torsion coil spring that locks both ends to the snooze lever and the partially toothed gear. It is something that can be done.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an embodiment of the present invention, Fig. 2 is a rear view of the same, Figs. 3 and 4 are perspective views of the same main parts, and Figs. 5 to 7 show the operation of the same. In the rear view, 1 is a gear train, 2 is a snooze lever, and 3 is a gear train.
is the missing gear, 4 is the transmission, 5 is the snooze spring,
6 is a contact spring, 7 is a first guide wheel, 8 is a second guide wheel, 17 is a support shaft, 32 is an elongated hole, 33 is a locking pin as a first engagement part, 34 is a spring locking pin, 35 is〓〓〓〓〓
A lever receiving pin is shown as the second engaging portion. 〓〓〓〓〓

Claims (1)

[Scope of claim for utility model registration] (1) A contact part that closes the alarm notification contact in conjunction with the indicator wheel, and a transmission that opens the alarm notification contact by pushing this contact part and meshes with the gear train of the clock. A snooze lever that engages one end of a tooth of a partially toothed gear and maintains a pressed state against a contact portion by meshing the partially toothed gear with a transmission pinion, and a snooze spring that biases the snooze lever in the return direction, In a snooze mechanism in which one part of the force of the snooze spring is set in the rotating direction at the meshing part between the partially toothed gear and the transmission pinion via the snooze lever, the partially toothed gear formed in a fan shape has an elongated hole relative to the support shaft. A first engaging part which is loosely fitted and receives the spring force of the snooze spring via the snooze lever, and a second engaging part which receives the operating force in the direction away from the transmission pinion via the snooze lever. It is equipped with a snooze lever,
The snooze spring is formed of a torsion coil spring that has one end locked to the snooze lever and the other end to the partially toothed gear, and the first engaging portion of the partially toothed gear and the engaging portion with the snooze spring. are placed on both sides of the line connecting the spindle of the partially toothed gear and the shaft of the transmission pinion, and the partially toothed gear is biased to the position where it starts meshing with the transmission pinion through direct engagement with the snooze spring. A snooze mechanism for an alarm clock characterized by: (2) The contact spring drive part of the snooze lever, which is equipped with a protrusion for pressing the contact spring of the contact part, is equipped with an elastic piece that receives an operation input and transmits the operation input to the contact spring drive part by its deflection. A snooze mechanism for an alarm clock according to claim 1, wherein the elastic piece is provided with a protrusion having a slope for pressing and moving a contact spring.