KR100467172B1 - Dual Time Analog Watch - Google Patents

Abstract

The present invention provides a dual time analog clock comprising: a first hour hand indicating a first local time; A first hour hand shaft coupled to the first hour hand in a horizontal direction; A second hour hand that concentrically rotates with the first hour hand to indicate a second local time; A second hour hand shaft coupled to the second hour hand in a horizontal direction; A one-way clutch that engages the first hour hand shaft and the second hour hand shaft in a forward rotation direction to integrally rotate and releases a bite in a reverse rotation direction; And a rotation manipulation unit capable of rotating the second hour hand shaft in a reverse direction, wherein the one-way clutch comprises: a fixed clutch plate fixed to one of the first hour hand shaft and the second hour hand shaft, and coupled to an axis in a horizontal direction; A movable clutch plate fixed to the other of the first hour hand shaft and the second hour hand shaft to be slidable along the axial direction on the other side of the fixed clutch plate, and accessible and spaced apart from the fixed clutch plate; A gripping means provided opposite to the fixed clutch plate and the movable clutch plate to be bited in a forward direction and released in a reverse direction; And an elastic member elastically pushing any one of the movable clutch plate and the fixed clutch plate. Thereby, a dual time analog clock is provided which makes it possible to easily recognize two different local times in a reliable, simple and inexpensive structure in which the first and second hour hands are connected.

Description

Dual Time Analog Watch

The present invention relates to a dual time analog clock, and more particularly, to an analog clock capable of simultaneously displaying two local times with one clock.

In today's era of internationalization, frequent flight attendants, office workers, business people, etc., feel that they need to know not only their time but also their local time for various purposes. In this case, as a clock, it would be very beneficial to be able to easily visualize not only the time of the home country but also the desired local time of the foreign country.

If you want to display two local time as one clock, digital clock is more limited than the analog clock in terms of space and economy in that it adds a display which shows foreign local time separately from the display which shows the time of its own. This is less. However, analog clocks usually require additional devices to indicate local time in addition to the hour, minute and second hands indicating their time and their driving means. You will be more restricted.

Due to these limitations of analog clocks, when the two different time guide plates, hour hand, minute hand, second hand, and driving means for driving them are used, the time guide plate or hour hand and the like are usually smaller than commercially available clocks. none. Therefore, it is inconvenient for the user who is accustomed to the conventional mono system to grasp the two local times by the small hour hand, minute hand and second hand. In addition, in terms of economics, it is installed on one body in appearance but is actually the same as two clock systems, so the number of parts increases and the structure of the clock becomes complicated.

In order to overcome this problem, a method of using the same time guide, minute and second hands in common, and using only two hands, that is, displaying time in the world, in general, time difference occurs in units of one hour. The second hour hand having a time difference from the first hour hand may be concentrically rotated at the same speed as the first hour hand, and the minute and second hands may be shared to represent two local times. The difficulty of the technique in this way is that the first and second hands rotate at the same speed when the clock is running, and the second time when it is necessary to change the second local time, such as foreign local time. The first and second hands are configured to operate only the hour hand.

On the other hand, in the recent technology, when the clock is in operation, the second hour hand shaft is fitted to the first hour hand shaft, which is a hollow shaft, so that the first hour hand and the second hour hand rotate concentrically, and the second hour hand shaft is rotated. When it is necessary to adjust, the second hour hand shaft is rotated by connecting the second hour hand shaft connected to the second hour hand shaft, and the second hour hand shaft is operated to return to the original position when the operation is completed.

However, in the conventional dual time analog clock, when the second hour hand shaft is operated, the second hour hand shaft is fitted into the first hour hand shaft, which is a hollow shaft, so that the second hour hand shaft is actually rotated like the first hour hand shaft, and thus the second hour hand shaft is rotated. It is difficult to adjust only the hour hand shaft, and the fitting connection between the first hour hand shaft and the second hour hand shaft is loosened due to the impact and abrasion that occurs when the second hour hand shaft rotation control unit and the second hour hand shaft are connected and disconnected. There is a problem in that the axis does not rotate like the first hour hand axis and loses its function as a dual time analog clock.

Accordingly, it is an object of the present invention, in view of these problems in the prior art, to make the connection operation of the first hour hand and the second hour hand a reliable, simple and inexpensive structure to facilitate the recognition of two different local time. To provide an analog clock.

1 is a plan view of a dual time analog clock according to a first embodiment of the present invention;

2 is a cross-sectional view of a dual time analog clock according to a first embodiment of the present invention;

3 is a partially broken perspective view of the one-way clutch of FIG.

4 is a partial cross-sectional view of a one-way clutch of a dual time analog clock according to a second embodiment of the present invention;

5 is a perspective view of a broken portion of the one-way clutch of the dual time analog watch according to the third embodiment of the present invention;

FIG. 6 is a partial cross-sectional view of a second hour hand drive of the dual time analog watch according to the fourth embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

45a: first hour hand 45b: first hour hand

47a: Second hour hand 47b: Second hour hand

50: one-way clutch 51: fixed clutch plate

53: movable clutch plate 55: spring

57: bite means 70: rotary operation unit

According to the present invention, there is provided a dual time analog clock, comprising: a first hour hand indicating a first local time; A first hour hand shaft coupled to the first hour hand in a horizontal direction; A second hour hand that concentrically rotates with the first hour hand to indicate a second local time; A second hour hand shaft coupled to the second hour hand in a horizontal direction; A one-way clutch that engages the first hour hand shaft and the second hour hand shaft in a forward rotation direction to integrally rotate and releases a bite in a reverse rotation direction; And a rotation manipulation unit capable of rotating the second hour hand shaft in a reverse direction, wherein the one-way clutch comprises: a fixed clutch plate fixed to one of the first hour hand shaft and the second hour hand shaft, and coupled to an axis in a horizontal direction; A movable clutch plate fixed to the other of the first hour hand shaft and the second hour hand shaft to be slidable along the axial direction on the other side of the fixed clutch plate, and accessible and spaced apart from the fixed clutch plate; A gripping means provided opposite to the fixed clutch plate and the movable clutch plate to be bited in a forward direction and released in a reverse direction; And an elastic member that elastically pushes any one of the movable clutch plate and the fixed clutch plate.

Here, it is preferable that the fixed clutch plate and the movable clutch plate further include a toothed tooth provided on the side.

In addition, the bite means, the pinch protrusion is formed on any one of the fixed clutch plate and the movable clutch plate, the bite groove is formed on the other, the bite groove is more convenient to have an inclined surface in the contact area, A connecting plate disposed on a lower surface of the movable clutch plate; A protrusion formed upwardly at an edge of the connecting plate and penetrating the movable clutch plate; And it is formed to be inclined in one direction on the fixed clutch plate to correspond to the projection to be able to achieve the object of the present invention to have a biting groove to be engaged in the forward direction and the bite is released in the reverse direction.

The one-way clutch may further include a ratchet wheel having a ratchet-shaped tooth at a side of the depression recessed in a central region, the ratchet wheel being rotated to the first hour hand shaft and coupled to an axis in a transverse direction; And a ratchet pole engaged with the ratchet tooth in the forward rotation direction to integrally rotate and release the bite in the reverse rotation direction, the second hour hand being fixed to the second hour hand shaft and being coupled to the axis in the transverse direction. It may be more desirable to include an axial rotating plate since it does not require a spring.

On the other hand, an object of the present invention, the first hour hand indicating a first local time; A first hour hand shaft coupled to the first hour hand in a horizontal direction; A second hour hand that concentrically rotates with the first hour hand to indicate a second local time; A second hour hand shaft coupled to the second hour hand in a horizontal direction; A rotation manipulation unit capable of rotating the second hour hand shaft in both directions; A first hour hand shaft driver for rotating the first hour hand shaft; And a second hour hand axis driver for driving the second hour hand axis separately from the first hour hand axis driver.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a plan view of a dual time analog clock according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view of a dual time analog clock according to a first embodiment of the present invention, and FIG. As a partially broken perspective view, as shown in these figures, the dual time analog clock 1 according to the present invention includes a time display plate 10, a drive unit 20, a power transmission unit 30, a second hand assembly 41, and a minute hand. The assembly 43, the first hour hand assembly 45, the one-way clutch 50, the second hour hand assembly 47, the time control unit 60 and the rotation control unit 70.

The time display panel 10 is made up of a 12 hour display panel in which numbers representing each time are divided into 12 equal parts in the circumferential direction. However, since it is difficult to visually recognize whether the second region time is AM or PM, the 12 hour display panel may be divided into 24 equal parts in the circumferential direction so that the time difference may be more easily identified.

The driving unit 20 is generally composed of an electric motor 21 using a battery as a power source, a rotating shaft 25, and a gear 23 coupled to the rotating shaft 25 of the electric motor. When the rotating shaft 25 of the electric motor rotates, the rotational force is transmitted to the power transmission unit 30.

The power transmission unit 30 converts the rotational force of the electric motor 21 into a constant gear ratio and transfers the rotational force of the second needle assembly 41 to the superneedle force transmission unit 31 to transfer the second hand assembly 41 to a constant gear ratio, usually 60. The power of the minute hand power transmission unit 33 which decelerates to 1 and transmits the minute hand assembly 43 and the minute hand assembly 43 to a predetermined gear ratio, usually 60: 5, is transmitted to the first hour hand assembly 45. It consists of a first time sine force transmission unit (35). Here, the first oscillation force transmission part 35 is a bevel gear 35d coupled to the gear 35a, the pinion 35b, the shaft 35c, and the shaft intermediate region between the gear 35a and the pinion 35b. The bevel gear 35d is combined with a time manipulator 60 to be described later.

The second hand assembly 41 has a second hand pinion 41c engaged with the second hand power transmission unit 31, a second hand shaft 41a coupled to the horizontal direction, and a second hand coupled to the end opposite to the second hand gear of the second hand shaft ( 41b) and the second hand gear 41d connected to the minute hand power transmission part 33, and the minute hand assembly 43 similarly has the minute hand pinion 43c engaged with the minute hand power transmission part 33, and transversely thereto. A minute hand shaft 43a coupled to the minute hand shaft, a minute hand 43b coupled horizontally to an end of the minute hand gear opposite to the minute hand gear, and a minute hand gear 43d connected to the first hourly driving force transmission part 35. When the second hand 41b is rotated once by the gear ratio of the minute hand power transmission unit 33, the minute hand 43b is rotated by 1 °.

The first hour hand assembly 45 is horizontally coupled to the first hour hand shaft 45a and the first hour hand shaft by 30 ° when the minute hand 43b is rotated by the first hour hand power transmission unit 35. It has a first hour hand 45b. The first hour hand 45b, together with the minute hand 43b and the second hand 41b, indicates the first local time, such as the time of its own country.

The one-way clutch 50 includes a movable clutch plate 53 capable of sliding in the lateral direction on the axis, a fixed clutch plate 51 having a static position on the axis with respect to the movable clutch plate 53, and a movable clutch plate 53. Elastic member 55 that pushes elastically, ie generally has a spring. The fixed clutch plate 51 is rotationally coupled to the axis on the opposite side of the second hour hand 47b of the second hour hand shaft 47a in the horizontal direction, and the movable clutch plate 53 approaches the fixed clutch plate 51. And rotationally fixed to the first hour hand shaft 45a so as to be spaced apart so as to be slidable along the axial direction above the fixed clutch plate 51. On the other hand, the movable clutch plate 53 is formed with a bite projection (53a) and the fixed clutch plate 51 is provided with a bite groove (51a) to face each other is a mutual bite occurs in the forward direction and the reverse bite in the reverse direction. The bite groove 51a has an inclined surface in the contact area so that bite and bite release can be made smoothly, and the toothed teeth 51b and 53b are provided at the sides of the fixed clutch plate 51 and the movable clutch plate 53. The side part of the clutch plate 51 is connected to the rotation operation part 70 which rotates only the 2nd hour hand shaft 47a, and the side part of the movable clutch plate 53 is connected to the 1st hour hand power transmission part 35. As shown in FIG.

The second hour hand assembly 47 has a second hour hand 47b indicating a second local time and a second hour hand axis 47a coupled laterally to the second hour hand. The second hour hand 47b is rotated by the rotation of the second hour hand shaft 47a to indicate a second local time such as a local time in a foreign country.

The time manipulation unit 60 has a bevel gear 61 coupled to the end and a time manipulation lever exposed to the outside of the watch. The bevel gear 61 provided at the end of the time manipulator 60 is coupled to form a pair of bevel gears with the bevel gear 35d coupled to the first hourly oscillation force transmission unit 35 so that the time manipulator 63 is external. Rotating it transmits the rotational force to the first hour hand power transmission unit 35, whereby the minute hand 43b, the first hour hand 45b, and the first one hand connected to the first hour hand shaft 45a by the one-way clutch 50 The second hour hand shaft 47a is rotated, and the second hour hand 47b is rotated.

The rotary manipulator 70 has a rotary operating force transmission unit 71 coupled to the toothed teeth 51b on the side of the fixed clutch plate 51 and a rotary operating lever 73 connected thereto and exposed to the outside. If the user rotates the rotary operation lever 73 in the reverse direction of the movable clutch plate 53, usually counterclockwise, the engaging projection 53a of the movable clutch plate 53 is the fixed clutch plate 51. Only the fixed clutch plate 51 is rotated because it is moved to move away from the bleed groove 51a along the inclined surface of the bleed groove 51a. When only the fixed clutch plate 51 is rotated, only the second hour hand shaft 47a connected thereto is rotated, so that only the second local time can be manipulated.

By this configuration, the operation of the dual time analog clock according to the present invention will be described.

When the clock is in operation, the rotation of the electric motor 21 is transmitted to the second hand assembly 41 by the second hand power transmission unit 31 so that the second hand 41b rotates, and the second hand shaft rotates one minute. By 33, the minute hand assembly 43 is rotated by 1 °. Similarly, when the minute hand shaft rotates once, the first hour hand power transmission unit 35 rotates the movable clutch plate 53 so that the first hour hand assembly 45 rotates by 30 °, thereby indicating the first local time. When the movable clutch plate 53 is rotated, the spring is disposed on the lower surface of the movable clutch plate 53 to receive a compressive force, and the bite protrusion 53a of the movable clutch plate 53 is bitten by the fixed clutch plate 51. The rotational force is applied to the fixed clutch plate 51 by contacting the groove 51a to press the front surface of the engagement groove 51a. Accordingly, the fixed clutch plate 51 rotates at the same speed as the rotational speed of the movable clutch plate 53, and the second hour hand 47b also rotates at the same speed as the first hour hand 45b to indicate the first local time. The first hour hand 45b has a constant time difference and indicates the second local time. This allows the user to know the first local time by sharing the second hand 41b and the minute hand 43b, and the second local time by the second hour hand 47b.

When it is necessary to adjust the time, the time control lever 63 rotates the time control lever 63 after the driving of the electric motor 21 is stopped or the connection of the power is interrupted. This rotational force is transmitted to the first hour hand power transmission unit 35 to rotate the minute hand 43b and the first hour hand 45b, and when the first hour hand 45b rotates, the movable clutch plate 53 and the fixed clutch The second hour hand 47b is rotated together by the plate 51 and the spring 55 so that the first local time can be adjusted while maintaining the parallax between the first hour hand 45b and the second hour hand 47b. .

If it is necessary to adjust the second local time indicating the local time of the foreign country, such as when moving a business trip area, rotating the rotary operation lever 73 of the rotary operation unit 70 exposed to the outside of the clock rotates the rotary operation. The rotational force is transmitted to the fixed clutch plate 51 by the power transmission unit 71. When the rotary operation lever 73 is rotated in the opposite direction to the rotational direction of the movable clutch plate 53 and usually counterclockwise, the fixed clutch plate 51 is rotated counterclockwise so that the second hour hand shaft 47a is rotated. The second local time indicated by the second hour hand 47b can be changed. At this time, since the bite groove 51a formed in the fixed clutch plate 51 has an inclined surface that deepens in the clockwise direction, when the counterclockwise rotation is made, the fixed clutch plate 51 and the movable clutch plate 53 are released from each other to be movable. Only the fixed clutch plate 51 rotates while the clutch plate 53 is stopped. As a result, since the second hour hand 47b can be adjusted to be relatively spaced apart from the first hour hand 45b, the second local time can be freely adjusted.

The one-way clutch 50 of the dual time analog clock of the present invention may have a bite means composed of the bite protrusion 53a and the bite groove 51a described in the first embodiment, and another bite means 57. FIG. 4 is a cross-sectional view of a one-way clutch portion of a dual time analog watch according to a second embodiment of the present invention, and the same parts as those of the first embodiment of the present invention will be omitted so that only the portions different from the first embodiment will be described. Where necessary for explanation, the same reference numerals are assigned to the same parts as the first embodiment.

As shown in the drawing, the locking means 57 according to the present embodiment is upwardly formed at the edge of the connecting plate 57a and the connecting plate 57a disposed on the lower surface of the movable clutch plate 53 and the movable clutch plate. And a biting groove 57c having a projection 57b penetrating through the 53 and an inclined surface deeply counterclockwise to the fixed clutch plate 51 so as to be engaged with the projection in the forward direction to correspond to the projection 57b and to be released in the reverse direction. Have

By this configuration, when the clock is operated, when the movable clutch plate 53 connected to the first hour hand shaft 45a is rotated, the spring 55 disposed below the connecting plate 57a causes the connecting plate 57a to move. When the projection 57b of the connecting plate 57a is engaged with the biting groove 57c of the fixed clutch plate 51, the fixed clutch plate 51 is movable by the movable clutch plate 53 by the rotation of the movable clutch plate 53. Rotate at the same speed as). In addition, when the fixed clutch plate 51 is rotated counterclockwise by operating the rotation operation lever 73, only the second hour hand shaft 47a is rotated by the interaction of the protrusion 57b and the bite groove 57c. Is the same as described in the first embodiment.

FIG. 5 is a perspective view of one-way clutch part broken in the dual time analog watch according to the third embodiment of the present invention, and the same part as the first embodiment of the present invention will be omitted so that only one-way clutch 50 is shown. For the sake of explanation, like reference numerals designate like parts in the first embodiment.

As shown in this figure, the one-way clutch 50 according to the present embodiment is composed of a ratchet wheel 52 and a second hour hand shaft rotating plate 54 having a ratchet pole 56. The ratchet wheel 52, which is fixed to the first hour hand shaft 45a and coupled to the axis in the horizontal direction, has a depression 52c recessed in a central area, and a ratchet type on the side of the depression 52c. The teeth 52b are provided. In addition, the second hour hand shaft rotating plate 54 fixed to the second hour hand shaft 47a and coupled to the axis in the horizontal direction is provided with a protrusion 56a protruding downward from the center at a predetermined circumferential distance. 52b and a ratchet pole 56 are engaged with each other in the forward rotational direction to integrally rotate and release the bite in the reverse rotational direction. In addition, a spring 56b is installed at the rear of the ratchet pole 56 for the action of the ratchet pole 56.

By this configuration, when the clock is operated, when the ratchet wheel 52 connected to the first hour hand shaft 45a rotates in the clockwise direction, the second hour hand shaft rotating plate 54 is engaged with the ratchet pole 56 to rotate. The second hour hand 47b is rotated at the same speed concentrically with the first hour hand 45b by the rotation of the second hour hand shaft rotating plate 54. In addition, when the rotation operation lever 73 is operated to rotate the second hour hand shaft rotating plate 54 counterclockwise, the ratchet pole 56 slides on the ratchet-type teeth 52b of the ratchet wheel 52 to thereby rotate the second. Only the hour hand shaft 47a is rotated, so that only the second hour hand can be adjusted.

FIG. 6 is a partial cross-sectional view of a dual time analog clock according to a fourth embodiment of the present invention. The same parts as those of the first embodiment of the present invention will be omitted, and only different portions from the first embodiment will be described. If necessary, the same reference numerals are used for the same parts as in the first embodiment. As shown in the drawing, rotating the fixed clutch plate 51 coupled to the second hour hand shaft 47a at the same rotational speed as the movable clutch plate 53 coupled to the first hour hand shaft 45a, as in the present embodiment. To this end, a second electric needle driving portion 20a having a toothed tooth portion 23a for transmitting the rotation of the electric motor 21a and the electric motor 21a in one direction is further mounted to the side of the fixed clutch plate 51. It can also be configured to be tooth coupled to.

With the above configuration, the connection operation of the first hour hand and the second hour hand is sure, simple, and inexpensive, so that the recognition of two different local time can be facilitated.

In the above-described embodiments, the first local time indicated by the first hour hand 45b corresponds to the time of the home country, and the second local time indicated by the second hour hand 47b corresponds to the local time of the foreign country. It may be used opposite to each other.

In addition, in the above-described embodiments, the bite protrusion 53a is provided on the movable clutch plate 53 and the bite groove 51a is formed on the fixed clutch plate 51. However, the bite protrusion 53a is fixed to the fixed clutch plate 51. The bite groove 51a may be provided in the movable clutch plate 53. Therefore, the spring 55 may also be provided below or above the one-way clutch 50.

In addition, although it is common to express gears and pinions in a pair of interlocking gears, for convenience of description, in each element having a toothed tooth for power transmission, the toothed tooth receives power from another element as a pinion, Although toothed teeth that transmit power to other elements are described as gears, this is only a matter of expression for distinguishing and referring to toothed teeth formed at both ends of the shaft.

As described above, according to the present invention, there is provided a dual time analog clock which makes it possible to easily recognize two different local time in a reliable, simple and inexpensive structure in which the first hour hand and the second hour hand are connected.

Claims (7)

In a dual time analog clock, A first hour hand indicating a first local time; A first hour hand shaft coupled to the first hour hand in a horizontal direction; A second hour hand that concentrically rotates with the first hour hand to indicate a second local time; A second hour hand shaft coupled to the second hour hand in a horizontal direction; A one-way clutch that engages the first hour hand shaft and the second hour hand shaft in a forward rotation direction to integrally rotate and releases a bite in a reverse rotation direction; And It has a rotating operation portion capable of rotating the second hour hand axis in the reverse direction, The one-way clutch, A fixed clutch plate fixed to one of the first hour hand shaft and the second hour hand shaft and coupled to an axis in a horizontal direction; A movable clutch plate fixed to the other of the first hour hand shaft and the second hour hand shaft to be slidable along the axial direction on the other side of the fixed clutch plate, and accessible and spaced apart from the fixed clutch plate; A gripping means provided opposite to the fixed clutch plate and the movable clutch plate to be bited in a forward direction and released in a reverse direction; And Dual time analog clock comprising an elastic member for elastically pushing any one of the movable clutch plate and the fixed clutch plate delete The method of claim 1, The fixed clutch plate and the movable clutch plate further comprises a toothed teeth provided on the side of the dual time analog clock The method of claim 3, wherein The bite means, a dual-time analog clock, characterized in that the bite projection is formed on any one of the fixed clutch plate and the movable clutch plate, the bite groove is formed on the other, the bite groove has an inclined surface in the contact area The method of claim 3, The bite means, A connection plate disposed on a bottom surface of the movable clutch plate; A protrusion formed upwardly at an edge of the connecting plate and penetrating the movable clutch plate; And Dual time analog clock is formed in the fixed clutch plate to be inclined in one direction so as to correspond to the projecting portion is engaged with the projecting portion in the forward direction, and has a bite groove released in the reverse direction The method of claim 1, The one-way clutch, A ratchet wheel having a ratchet tooth on a side of the depression recessed in a central region, the ratchet wheel being fixed to the first hour hand shaft and being laterally coupled to the axis; And A second hour hand shaft engaged with the ratchet tooth in the forward rotation direction and having a ratchet pole to integrally rotate and release the bite in the reverse rotation direction; Dual time analog watch comprising a tumbler In a dual time analog clock, A first hour hand indicating a first local time; A first hour hand shaft coupled to the first hour hand in a horizontal direction; A second hour hand that concentrically rotates with the first hour hand to indicate a second local time; A second hour hand shaft coupled to the second hour hand in a horizontal direction; A rotation manipulation unit capable of rotating the second hour hand shaft in both directions; A first hour hand shaft driver for rotating the first hour hand shaft; And A dual time analog clock having a second hour hand axis driver for driving the second hour hand axis separately from the first hour hand axis driver.