JPH0539512Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an alarm clock that can display alarm time using a guide hand.

(Prior Art) In a conventional alarm clock, a time adjustment knob for adjusting the current time, a reference adjustment knob for adjusting the alarm time, and a stop button for the alarm device are provided separately. When adjusting the time, the time adjustment knob is pushed or pulled to engage the time adjustment wheel and the clock wheel train, and normally the time adjustment wheel is idle. On the other hand, the guideline correction wheel and guideline display wheel are always set in a meshed state, and the guideline correction knob is configured so that the guideline time can be adjusted simply by rotating it. Further, the time adjustment operation is performed when the time is significantly incorrect, such as when replacing batteries, and the frequency of this operation is extremely low. Therefore, the time adjustment knob is often housed in a case with a lid. On the other hand, the standard adjustment knob is operated more frequently than the time adjustment knob, for example, because the wake-up time differs depending on whether it is a weekday or a holiday. Therefore, the reference time adjustment knob is provided protruding from the outside of the case, making it easy to operate.

(Problem to be solved by the invention) In the conventional structure in which the guideline correction wheel and guideline display wheel are always engaged, the guideline correction knob is provided protruding from the outside of the case, so it is difficult to turn the guideline correction knob by mistake. As a result, the alarm set time may be shifted. In other words, even if you set the alarm time before going to bed, if you hold the watch in your hand to check the current time in the middle of the night or put the watch next to your bed, you may accidentally touch the guide adjustment knob and The alarm set time is off due to the rotation of the correction knob.

In order to solve this problem, the guideline correction wheel and guideline display wheel are separated except when correcting the time, like a current time adjustment wheel train, and rotated while pushing or pulling the knob when adjusting the guideline time. A gear train configuration is possible. However, not only does this require a moving space for the guideline correction vehicle, but it also poses problems such as difficulty in operability.

In addition, the guide adjustment knob and ring stop button are separately provided outside the watch case, so there are many parts.
It was also not possible to reduce assembly man-hours.

This invention allows you to operate the guideline adjustment and stop the alarm device from ringing with a single operator, and when the alarm is set, the guideline adjustment wheel is locked so that it cannot rotate, and the alarm set time is not shifted by external force. The purpose is to provide an alarm clock without.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides an alarm clock that displays the alarm set time with a guide hand, which is linked to the guide wheel and is arranged in a direction perpendicular to the axis of rotation of the guide wheel. a guideline correction shaft that is always connected to the guideline display wheel through an intermediate wheel such as a crown gear, which is capable of transmitting rotational force to the guideline; An operator provided to be reciprocally movable and having an uneven surface formed on its circumferential surface; a protrusion that engages with the uneven part of the operator to lock the operator in a non-rotatable manner; and the operator and the guideline correction. a holding part that is elastically coupled to a concavo-convex surface provided on one of the sliding surfaces of the shaft and holds the operator at an alarm set position and a sound stop position; and an alarm device that is linked to the axial movement of the operator. and an alarm switch for selecting and setting the setting and ringing stop state, and the operator is characterized in that both the guideline correction axis and the alarm switch can be operated.

(Embodiment) Figures 1 to 6 show an embodiment of the present invention, in which a clock mechanism body 4 is fixed to a clock case 2, and a second hand 6, a minute hand 8, and an hour hand 10 indicate the current time. The reference time is displayed on the reference hand 12.
A time adjustment knob 14 is provided on the back of the clock mechanism body 4, and the time adjustment knob 14 adjusts the minute hand 8 and hour hand 10.
A correction operation is performed. A guideline correction shaft 16 is provided on the top surface of the clock mechanism body 4, and the guideline correction shaft 16
An operation for correcting the guide needle 12 is performed at . As a means for converting the rotational force of the guideline correction shaft 16 in a direction perpendicular to the guideline correction shaft 16, a conventionally known meshing means of a crown gear and a pinion gear is suitable. That is, although not shown, the guide wheel with the guide needle 12 fixed to the indicator pipe meshes with an intermediate wheel having a crown gear.
The crown gear meshes with a correction gear provided at the end of the guide correction shaft 16. The axial length of the tooth portion of the correction gear is set to be longer than the axial movement length of the reference correction shaft 16, and the reference correction shaft 16 and the reference display wheel are set to be always interlocked via the intermediate wheel. has been done. A T-shaped sliding shaft 18 is connected to the guideline correction shaft 16 by a pin 20, as shown in FIG. The sliding shaft 18 consists of a shaft portion 22 and a head 24,
The cross section of the shaft portion 22 is formed into an oval shape as shown in FIG. 3, and the head portion 24 is formed into a substantially rectangular parallelepiped shape.
Further, the arcuate surface 26 of the shaft portion 22 has first, second, third
As shown in the figure, a groove 28 and a protrusion 30 are provided.

The operator 32 is made of a substantially cylindrical body, and has knurlings 34 and 36 provided on its circumferential surface as shown in FIG.
The shaft portion 38 has a shaft hole 40 in which the shaft portion 22 of the sliding shaft 18 can slide, and the groove portion 2 of the sliding shaft 18
8 are provided with elastic claws 42, 44 that can be engaged with them.
The elastic claws 42 and 44 are configured to be able to move over the protrusion 30 of the sliding shaft 18 and reciprocate in the axial direction of the sliding shaft 18. The elastic claws 42 and 44 constitute a holding section that selectively holds the operator 32 in the alarm set position and the sound stop position by engaging and disengaging with the groove part 28. In the illustrated embodiment, the elastic claws 42 and 44 are provided on the operator 32 and
is provided on the sliding shaft 18; however, a configuration in which the groove portion 28 is provided on the operator 32 and the elastic claws 42, 44 are provided on the sliding shaft 18 may also be used.

A knurl 36 of the operating element 32 is housed inside the watch case 2, and the knurl 36 is provided so as to be engageable with a lock pawl 46 provided as a protrusion inside the watch case 2. When the operating element 32 moves in the direction of the arrow in FIG. 1, the lock pawl 46 and the knurling 36 engage as shown in FIG. 5, and the operating element 32 is locked against rotation.

On the other hand, on the inner surface of the watch case 2, there is a movable contact plate 48 that presses the end face of the operator 32 in the direction of the arrow in FIG.
A fixed contact plate 50 is provided which is brought into contact and separated by the movement of the movable contact plate 48. The movable contact plate 48 and the fixed contact plate 50 constitute an alarm switch 52 of an alarm device (not shown).

The illustrated embodiment is constructed as described above, and its operation will be explained next.

FIG. 1 shows a state in which the alarm device is set to stop sounding. In this state, the knurling 36 of the operating element 32 is separated from the lock pawl 46, and by rotating the operating element 32, the guide needle 12
can be modified at the desired time. On the other hand, the movable contact plate 48 of the alarm switch 52 is moved by the operator 32 against the elastic force, so that the alarm switch 52 is set to a non-sounding state.

When the operator 32 is moved in the direction of the arrow and fixed in the state shown in FIG. 6, the knurl 36 of the operator 32 is locked unrotatably by the lock pawl 46, and the alarm switch 52 is moved so that the movable contact plate 48 is connected to the fixed contact plate. 50 and is set to the alarm set state.

(Effects of the invention) According to the invention, it is possible to adjust the indication and set the alarm device and turn it off using the indication adjustment knob, so the number of parts and the number of assembly steps can be reduced. In addition, the guideline correction wheel is always engaged with the guideline display wheel train as in the past, so there is no need to pull or push the guideline correction knob (operator) and it is easy to operate by simply turning it. Operation is fine. Furthermore, when the guideline adjustment knob is set to the alarm set position, the guideline adjustment knob is locked by the locking claw so that it cannot be rotated by an external force after the alarm is set, causing the alarm set time to shift. There is no need to put anything away. As a result, the alarm operation can be performed reliably at the alarm set time, and the reliability of the alarm function is improved.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of the main parts of the alarm clock according to the present invention in a state where the alarm is turned off. FIG. 2 is a cross-sectional view of the main part of the coupled state of the correction shaft and the sliding shaft. FIG. 3 is a sectional view taken along the line -- in FIG. 1. FIG. 4 is a sectional view taken along the line -- in FIG. 2. FIG. 5 is a cross-sectional view of the main part of the operating element in an engaged state between the knurling and the lock pawl. FIG. 6 is a sectional view of the main part in the alarm set state. 2... Watch case, 4... Watch mechanism body, 16...
... Guideline correction shaft, 18 ... Sliding shaft, 28 ... Groove,
30... protrusion, 32... operator, 34, 36...
Knurling, 42, 44... elastic claw, 46... lock claw, 52... alarm switch.

Claims (1)

[Scope of Claim for Utility Model Registration] In an alarm clock that displays the alarm set time using a guide hand, an alarm clock that works in conjunction with a guide wheel and is capable of transmitting rotational force in a direction perpendicular to the rotation axis of the guide wheel, such as a crown gear, etc. a guideline correction shaft that is always connected to the guideline display wheel through an intermediate wheel; and a guideline correction shaft that is integrally rotatably connected to the guideline correction shaft and is provided so as to be able to reciprocate by a predetermined amount in the axial direction, and has an uneven surface on its circumferential surface. an operator formed with a projection, a protrusion that engages with a concave-convex portion of the operator to lock the operator in a non-rotatable manner, and a protrusion provided on a sliding surface of either the operator or the guideline correction shaft. a holding part that is elastically coupled to the uneven surface and holds the operator at an alarm set position and a sound stop position; and an alarm switch that selects and sets the set and sound stop states of the alarm device in conjunction with the axial movement of the operator. An alarm clock comprising the following, wherein the operator is capable of operating both a guideline correction axis and an alarm switch.