JPS6221992Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to the improvement of a time-telling clock, and in particular, by turning on the time-reporting contact device after the counter hook and the lever engage at the hour, the impact at the time of said engagement is reduced. It is characterized in that the alarm sound is reduced and false alarms are prevented.

In the conventional alarm mechanism, the impact force when the lever and lever engage may cause the lever to swing, resulting in the lever and lever engaging in a position that deviates from the predetermined engagement position. It was hot. As a result, a problem arises in that the alarm sound and the displayed time do not match. As a time-telling mechanism that alleviates the impact force, a mechanism has been proposed in which the return force of the return spring of the counter hook is set to a small value, but in this mechanism, the pressing force of the counter hook against the lever is small. However, there was a problem in that the counter hook and the lever were not reliably engaged in a predetermined position, and as a result, a false alarm occurred.

The present invention was developed to solve the above-mentioned conventional problems, and its purpose is to reduce the impact force when the multiple hook falls onto the comb bar, and to ensure that the multiple hook is engaged with the teeth of the comb bar in a predetermined manner. The purpose of the present invention is to provide an alarm device that

In order to achieve the above object, the present invention has an hour cam wheel which has at least one hour striking cam protrusion and rotates once per hour in conjunction with the clock train; It has a rotary hook that rotates and has a first protrusion and a second protrusion, a counter hook that swings with the rotation of the swallow hook, and a cam surface with a different radius corresponding to 1 o'clock to 12 o'clock on the circumferential surface. , a multi-domain cam that interlocks with the hour cam wheel, a comb that is rotatably supported on the shaft and elastically biased in the direction of the multi-domain cam, and further has a large number of comb-matching teeth on its outer peripheral surface, and a comb-subset tooth. a rotating rotatable hook having an engaging protrusion that engages with the holder and a pressing surface that is pressed by a second protrusion of the folding hook, and which is elastically biased in the direction of the comb; and a first protrusion of the folding hook. A time reporting device comprising: a contact spring that engages with and swings; and a time reporting contact device that has a contact spring that engages with and swings the multi-socket hook; Before it falls from the cam protrusion of the cam wheel, the numbering hook separates from the lever, the numbering hook is swung by the age hook, and after the hook engages with the number hooking cam, the numbering hook separates from the second protrusion of the age hook. A relief portion is provided for engaging the multi-port hook to a predetermined comb bar chase tooth, and when the second protrusion engages with the relief portion, the multiple hook falls from a low position to the comb spacing tooth. It is characterized by

The present invention will be described below based on an embodiment of the present invention shown in the drawings.

An embodiment of the present invention is shown in FIGS. 1 to 5, and in FIG. 1, an hour cam wheel 10 is fixed coaxially and rotatably together with a minute wheel (not shown).
Rotates once per hour. On the hour cam wheel 10, a cam protrusion 12 for the hour and a cam protrusion 14 for striking the half hour are formed at intervals of approximately 180 degrees, and have the function of controlling the time reporting operation of the hour or half time by coming into contact with and separating from the bearded wheel. .

The Agekama 20 is swingably supported on a support shaft 22 erected on the base plate, and has a protrusion 24 formed at one end.
is set to slide on the cam peripheral surface of the time cam wheel 10. In addition, a first protrusion 26 and a second protrusion 28 are provided protrudingly on the swallowtail hook 20, and the first protrusion 26
The contact spring 51a of the time signal contact device 51 is engaged with the second protrusion 28, and the second protrusion 28 is engaged with the counter hook 30, respectively.
This age cam 20 is always elastically pressed in the direction of arrow A in order to swing following the cam shape of the hour cam wheel 10.
When engaged with 14, the counter hook 30 and the contact spring 51
It is set to press and move a.

The counter hook 30 is swingably supported by a shaft 32 projecting from the base plate, and an engaging protrusion 34 extends so as to be able to engage with the comb bar chain teeth 40a of the comb 40 as appropriate. The counter hook 30 is always elastically pressed in the direction of arrow B by an elastic member (not shown), and the arcuate pressing portion 36 is arranged so as to be able to engage with the contact spring 51b.

Furthermore, in the number-taking hook 30, a pressing surface 37 that can be pressed by the second protrusion 28 of the age hook 20 is provided in order to follow the swinging of the age hook 20 and cause it to swing.
, a relief portion 37a that can be engaged with the second protrusion 28;
is formed. In the illustrated embodiment, the relief portion 37a is formed in a substantially U-shape, and the second protrusion 28 of the swallowtail hook 20 engages with the relief portion 37a immediately before the hourly warning operation, so that the relief portion 37a is formed in a substantially U-shape. Since the fall of the hook onto the comb is restricted, the impact force due to the falling force of the katori hook against the comb is reduced. As a result, the engagement between the counter hook and the comb bar becomes gentle, and has the function of reliably engaging the engagement protrusion 34 of the counter hook 30 and the comb bar chain teeth 40a.

The comb 40 is rotatably supported by a shaft 42 protruding from the base plate, and includes comb spacing teeth 40a formed in an arcuate surface and a cam surface 50a of a multi-piece hook 50.
A protrusion 46 is formed that can be engaged with as appropriate. This comb 40 is always elastically pressed in the direction of arrow C.

The counting hook 50 is integrally molded with an hour wheel (not shown), and has 12 stages of cam surfaces 50a corresponding to the hour hand from 1 o'clock to 12 o'clock.

The feed cam 60 is fixed to a rotating shaft 62 that is rotated by a motor (not shown), and a feed pin 64 formed on the feed cam 60 is configured to feed the comb barlet teeth 40a of the comb 40 one tooth at a time when an alarm sound is generated. It is set.

The time reporting contact device 51 includes a contact spring 51a and a contact spring 51b, and is connected to a motor and a power source (not shown), and is set so that the motor is driven by contact between the contact spring 51a and the contact spring 51b. .

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

FIG. 1 shows the state in which the 1:30 hour warning operation has been completed. The age hook 20 has the protrusion 24 in engagement with the valley surface of the hour cam wheel 10, and the number hook 3
0 holds the comb 40 in the position shown in FIG. 1, and the contact springs 51a and 51b are in a non-contact state. On the other hand, the second protrusion 28 of the swallow hook 20 is engaged with the pressing surface 37 of the counter hook 30.

FIG. 2 shows a state corresponding to around 1:50 after time has elapsed, and the projection 24 of the age cam 20 is engaged with the hour striking cam projection 12 of the hour cam wheel 10. As a result, the engagement between the lever 30 and the lever 40 is released, and the protrusion 46 of the lever 40 engages the cam surface 50a of the lever cam 50 corresponding to 2 o'clock, so that the lever 40 moves in the direction of arrow C. is moved in the opposite direction. However, the contact spring 51a
is pressed and held by the first protrusion 26 of the bearded hook 20, the contact spring 51b is pressed and held by the counter hook 30, and both contact springs 51a and 51b are in a non-contact state. In this state, Agekama 20's second
The protrusion 28 presses the pressing surface 37 of the counter hook 30, but does not engage with the relief portion 37a.

When further time passes from the time in the state shown in FIG. 2, the swing hook 20 moves in the direction opposite to the arrow A direction by the hour striking cam protrusion of the hour cam wheel 10, as shown in FIG. As a result, the second protrusion 2 of Agekama 20
8 engages with the relief portion 37a, and the counter hook 30 rotates in the direction of arrow B. Note that the depth of the relief portion 37a is determined by the rotation of the counter hook 30 such that the second protrusion 28 comes into contact with the relief portion 37a and at the same time, the engagement protrusion 34 engages with the bottom surface of the comb toothed tooth 40a. Therefore, the impact force when the counter hook 30 engages with the comb 40 is dispersed to two locations: the relief portion 37a and the comb barlet tooth 40a. Therefore, the engaging protrusion 34 of the counter hook 30 can reliably engage with the comb barlet tooth 40a corresponding to the 2 o'clock position.

FIG. 4 shows a state where time has further elapsed from the time shown in FIG. 3 and it has reached 2 o'clock (on the hour). In this state, the protrusion 24 of the age cam 20 falls from the hour striking cam protrusion 12 of the hour cam wheel 10 onto the valley surface, and as a result, the first protrusion 26 of the age cam 20
, the contact spring 51a, the second protrusion 28, and the counter hook 3
The engaged state of 0 is released. Therefore, contact spring 5
1a is restored to its original state. However, since the engaging protrusion 34 of the multi-piece hook 30 engages with the comb barlet tooth 40a corresponding to 2 o'clock on the comb bar 40, the contact spring 51b is pressed and held by the arcuate pressing portion 36 of the multi-piece hook 30. , therefore, point spring 5
1a and 51b are held in contact with each other. As a result, the time-reporting contact device 51 is turned on, and a motor (not shown) is driven to perform a well-known time-reporting operation (not shown). That is, the comb feed cam 60 is rotated in a predetermined direction by the drive of the motor, and for each rotation, the feed pin 64 moves the comb feed teeth 40a a predetermined number of times (in the illustrated embodiment, 2
time) to reliably generate the 2 o'clock sound.

On the other hand, FIG. 5 shows the state immediately before the time signal operation for 1:30 is started, and the projection 24 of the swallowtail hook 20 is engaged with the half-hour striking cam projection 14 of the hour cam wheel 10. The first protrusion 26 of the swallowtail hook 20 presses and moves the contact spring 51a as shown in FIG.
The contact spring 51a is held at the position shown. Second
The protrusion 28 presses the pressing surface 37 to move the counter hook 30 in the direction opposite to the direction of arrow B, and
The arcuate pressing part 36 of the counter hook 30 is the contact spring 51
b is held in the position shown. Also, the hour cam wheel 1
The height of the cam projection 14 for hitting the half hour at 0 is set lower than the height of the cam projection 12 for hitting the hour, and as a result,
The engaging protrusion 34 of the counter hook 30 engages with the outermost end of the comb bar chain tooth 40a. This is because the engagement protrusion 34 and the comb-barret tooth 40a are not completely released from the engaged state due to the amount of movement of the swallowtail gear 20 by the half-time cam protrusion 14, and the engagement protrusion 34 comes into contact with the comb-barrette tooth 40a. occurs in In this state, when a predetermined period of time has elapsed and the protrusion 24 of the age cam 20 falls from the half-time cam projection 14 to the valley surface, the engagement state between the first protrusion 26 of the age cam 20 and the contact spring 51a is released. Ru. As a result, the contact spring 51a returns to its original state, contacts the contact spring 51b, turns on the time reporting contact device 51, drives a motor (not shown), and performs the well-known 30-minute time warning operation. That is, since the engaging protrusion 34 engages with the outermost end of the comb tooth 40a, the alarm sound is reliably generated only once.

As explained above, according to the illustrated embodiment, the time notification operation at the hour (00 minutes) is carried out through two stages, and the impact force when the comb-back chat teeth 40a and the engagement protrusion 34 engage is smaller than that of the conventional one. It is relaxed compared to . In other words, the state in which the engagement state between the comb bara chatch teeth 40a and the engagement protrusion 34 is completely released, and the second protrusion 28 of the swallowtail hook 20 is in the relief portion 3 of the hook hook 30.
7a, the hour arrives after the engagement protrusion 34 has engaged with a predetermined comb tooth 40a. Therefore, the engaging protrusion 34 of the counter hook 20 can reliably engage with the predetermined comb bar chain tooth 40a, and accurate time-telling operation can be performed.

As explained in detail above, according to the present invention, the engaging protrusion of the counter hook can reliably engage with the predetermined tooth of the comb barlet just before the hour arrives, so that the displayed time and the alarm sound can be heard. Perfect match.

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of the present invention, and Figure 1 is a plan view of the state in which the half-hour warning operation has been completed;
Figures 2 and 3 are plan views showing the state just before the hour;
FIG. 4 is a plan view showing the state immediately after the hour-hour telling operation is started, and FIG. 5 is a plan view showing the state immediately before the half-hour engaging operation is started. 10... Time cam car, 20... Agecam, 26...
...First protrusion, 28...Second protrusion, 30...Multiple hook, 34...Engaging protrusion, 37a...Escape part, 40
...Kushiba, 40a...Kushibara chiettooth, 5
1... Time signal contact device.

Claims (1)

[Claims for Utility Model Registration] An hour cam wheel that has at least one hour striking cam protrusion and rotates once per hour in conjunction with a clock train; and an hour cam wheel that rotates in conjunction with the time cam wheel. , a swallowtail hook having a first protrusion and a second protrusion, a counter hook that swings as the swallowtail hook rotates, and a cam surface having a different radius corresponding to 1 o'clock to 12 o'clock on the circumferential surface, A multiple cam that interlocks with the cam wheel, a comb that is rotatably supported on the shaft and elastically biased in the direction of the multiple cam, and further has a large number of comb ratchet teeth on its outer circumferential surface, and engages with the comb ratchet teeth. a rotating hook having an engaging protrusion and a pressing surface pressed by a second protrusion of the swallowtail hook, which is elastically biased in the direction of the comb, and engaged with the first protrusion of the swallowtail hook; a time-reporting contact device having a contact spring that swings and a contact spring that swings while engaging with a counter hook, and a time-reporting device comprising: a time-reporting contact device that has a contact spring that swings when engaged with a counter hook; Before it falls from the cam protrusion of the car, the number-taking hook is swung by the age hook and separates from the lever, and the hook engages with the number-taking cam, and then engages with the second protrusion of the age hook, causing the number-taking hook to move. A relief part is provided for engaging the tooth with a predetermined comb bar chase tooth, and when the second protrusion engages with the relief part, the counter hook falls from a low position onto the tooth of the comb bar chase. Device.