JPS6111664Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a ringing stop mechanism used in a timer, particularly an alarm device such as an electric alarm clock or a timer.

Conventionally, as a stop mechanism for the above-mentioned alarm devices, except for those that use commercially available switches as they are, the movable contact piece of the switch installed between the alarm sounding device and the power source can be moved to the outer frame of the timer. A type of switch that turns off the switch by forcibly displacing it with an attached operating member, and an operation that is movably attached to a fixed contact provided between the alarm sounding device and the power source and the outer frame of the timer. A type of switch is known in which a switch is formed by a conductive portion formed on a member, and the switch is turned off by moving the operating member. Regarding the moving direction of the operating member in the above, there are two types: one that slides the outer frame of the timer, and one that pushes and pulls out the outer frame of the timer. Similarly, the operating member is attached to the frame so as not to come off.

That is, the above-mentioned operating member usually has a structure for preventing it from coming off in a part located inside the outer frame (or a partner of the part located outside) so that it does not come off to the outside (or inside) of the outer frame of the timer. However, because of this, the process of attaching the operating member was time-consuming.

The present invention has been devised in view of the above, and its purpose is to provide a noise-stopping mechanism that has a simple structure and is extremely easy to assemble.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to drawings showing embodiments in which the present invention is applied to an alarm clock.

In Figures 1 and 2, 1 is an hour wheel which is set to rotate once every 12 hours by a drive motor (not shown) and has two or more notched holes 1a, and 2 is a notch in the hour hand wheel 1. An alarm time setting member that is provided with two or more cams 2a corresponding to the holes 1a, is movable toward the hour hand wheel 1 side (upward), and does not disclose a rotational angular position relative to the hour hand wheel 1. This is a reference car that can be changed depending on the situation.

Reference numeral 3 denotes a leaf spring made of a conductive material, one end of which is attached to a fixed member and has a tendency to deviate in the direction of arrow A, urging the reference wheel 2 upward and setting the alarm set time ( Figures 1 and 2)
It is adapted to contact the terminal 4 at the same time. The other free end of the leaf spring 3 has a hook-shaped bent part 3a.
is formed. The terminal 4 is attached to a middle plate 5 fixed inside the watch body, and is connected to a conductive lead 5a fixed to the middle plate.

The lead 5a and the leaf spring are connected to a circuit including a power source Eo and an alarm sounding device 6,
Therefore, the leaf spring 3 and the terminal 4 constitute a switch of the alarm sounding circuit.

7 is the back case of the watch, 8 is the front case,
It is fixed to the chassis of the timepiece mechanism using screws (not shown) to form an outer frame of the mechanism.
8a is a part of the wall of the front case 8, and 8a' is a protrusion formed on the surface side thereof. Further, when both cases are fixed, a gap C is formed between the wall 8a of the front case 8 and the portion 7a of the back case 7. FIGS. 3 to 5 show perspective views of the configurations of both cases.

Reference numeral 9 denotes a noise-stopping member made of highly elastic plastic or the like, and includes a pair of tongue-shaped legs 9a, 9b and a base portion 9d.

A slope 9a' is formed at the tip of the leg 9a,
In addition, a retaining portion 9a'' is formed in the middle.The leg portion 9b is formed to become thinner toward the tip so that it can be easily bent, and a protrusion 9b' is provided on the upper surface of the tip. The leg portion 9b also has a tendency to deviate in the direction of arrow B (particularly the portion from the middle to the tip).

When the anti-ringing member 9 is assembled into a watch case as shown in the figure, its leg portion 9a is fitted into the gap C between the portion 7a of the back case 7 and the front case 8; The portion 9b is located on the surface of the front case 8, and as described above,
Since the legs 9b have a biasing tendency in the direction of arrow B, while elastically holding the section 8a of the front case 8 between the legs, it is possible to move the part 8a of the front case 8 between the non-operating position (Fig. 1) and the working position (Fig. 2). Set to be movable. That is, the wall 8a of the front case 8 serves as a guide for the anti-noise member 9.

Next, the operation of the illustrated alarm device will be explained.

The alarm time is set according to the user's wishes by determining the rotational angular position of the reference wheel 2 relative to the hour wheel 1 using an alarm time setting member (not shown). Before the alarm set time arrives, the cam 2a of the indicator wheel 2 is outside the notch hole 1a of the hour hand wheel 1, and the leaf spring 3 is
In its downwardly deflected position against its biasing behavior, the leaf spring 3 is separated from the terminal 4. Therefore, the alarm sounding device 6 cannot operate.

When the alarm set time comes, the cam 2a of the reference wheel 2 faces the cutout hole 1a of the hour hand wheel 1, and the reference wheel 2 is moved upward by the leaf spring 3, so that the leaf spring 3 is connected to the terminal 4. contact, that is, the alarm sounding circuit is closed and the alarm sounding device is activated. (Fig. 1) However, at this time, the noise stopper member 9
is assumed to be in its inactive position as shown in FIG. Since the protrusion 9b' of the leg 9b of the anti-noise member 9 in the non-operating position is located on the left slope of the protrusion 8a' of the front case 8, the anti-noise member 9 moves forward due to its own elastic force. The case 8 is held with appropriate pressure and is urged leftward in the drawing, and its retaining portion 9a'' is pressed against the inner wall surface of the back case 7 and locked in that position.

Now, when the anti-noise member is pushed to the right, the protrusion 9b' of the leg 9b passes over the top of the protrusion 8a' of the front case 8 and reaches the operating position (FIG. 2). At this time, the protrusion 9b' is on the right slope of the protrusion 8a', and therefore the anti-noise member 9 is biased to the right while elastically holding the front case 8, and the base body The right side surface of 9d is pressed against the surfaces of both cases and is locked in that position.

As is clear from the above, the anti-noise member 9 is
Since it is locked in the non-acting and working position by its elastic force, its operation is a click operation.

In addition, in the process of the anti-noise member 9 moving to the right as described above, the leaf spring 3 is pushed against the direction of deflection along the slope 9a' of the leg portion 9a, and eventually the leaf spring 3 and Since terminal 4 is separated (second
), the alarm sounding device will stop operating.

After a predetermined period of time, the cam 2a of the indicator wheel 2 comes out of the notch hole 1a of the hour hand wheel 1 due to the rotation of the hour hand wheel 1, but if before that, the anti-noise member 9 is click-activated to bring it to the non-operating position. , the deflection of the leaf spring 3 causes the alarm sounding device 6 to operate again.

Next, the cases 7 and 8 of the anti-noise member 9
This section explains the installation work.

As mentioned above, after the above-mentioned attachment, the retaining part 9a'' of the leg part 9a (and the base part 9) is attached to the back case 7.
By preventing d), the ring stopper member 9 is prevented from falling off from the watch case, but the ring stopper member 9 is designed to hold only the front case between its legs. Therefore, when assembling, it is necessary to fit this into a predetermined position (section 8a) of the front case 8 in advance, and then fix the back case 7 to the front case or the watch mechanism chassis. Moreover, because of this structure, the noise stopper member 9 can be formed as a single piece from a plastic material.

Furthermore, depending on the convenience of work, it is also possible to attach the noise stopper member 9 after fixing the back case 7. The leg portion 9a of the anti-sound member is fitted into the gap C between the back case and the front case, and the gap C is formed when the case is made of a material with a certain degree of elasticity such as plastic. This is because it can be easily spread.

In this case, as shown in FIG.
The part a is formed into a leaf shape, or as shown in FIG.
It is even more effective if the slope 9a is provided on the right side of a''.

FIGS. 6 and 7 show another embodiment of the anti-ringing member. That is, the anti-noise member 10 has a leg portion 10
a, a leg portion 10b branched into three branches (10b ₁ to 10b ₃ ), and a base portion 10d. The feature of this is that one leg is branched into three parts, which makes it easy to obtain elasticity of the leg, and
Points include good balance when holding the front case.

As explained above, the anti-noise mechanism of the present invention has the advantage that its structure is extremely simple and its assembly is extremely easy.

[Brief explanation of the drawing]

FIG. 1 is a front view of the essential parts of an embodiment of the present invention in an alarm clock, showing the case where the ring stopper is in the non-operating position, and FIG. In the figure, a case is shown in which the anti-noise member (with a partially deformed anti-snap part) is in the operating position. Figures 3, 4 and 5 are partial perspective views of different embodiments of the watch case, Figure 6 is a front view of an embodiment of the anti-ringing member different from Figures 1 and 2, and Figure 7 is the same. It is a front bottom view. 1... Hour hand wheel, 2... Reference wheel, 3... Leaf spring,
4...terminal, 5...middle plate, 6...alarm sounding device, Eo...power supply, 7...back case, 8...front case (8a...wall, 8a'...protrusion), 9 ...Sound-stopping member (9a, 9b...legs, 9a'...slope,
9a''... retaining part, 9b'... convex part, 9d... base part), 10... ringing prevention member.

Claims (1)

[Scope of utility model registration request] In a timing device, the outer frame of the mechanical part of the device is formed by a front case and a back case, and a wall surface forming a part of one of the cases serves as a guide part, and there is a gap between the guide part and the other case. and further includes a ring stopper made of an elastic body and consisting of a base portion and at least two legs substantially parallel to each other, and having a means for preventing slippage on at least one leg. The guide part is attached to the case so as to be elastically clamped, so that the base part and the retaining means are movable between strokes blocked by the other case, and in the process of movement. An alarm stopping mechanism characterized in that the switch is switched by bringing the leg into contact with the alarm switch.