KR100796573B1 - Small-sized timer - Google Patents

Abstract

A small-sized timer is provided to control power stably and to use electronic devices safely by preventing the power from being connected to both terminals in cutting off the power. In a small-sized timer, a cam(434) is installed in a timer case and interlockingly rotated by a driving member(420). Input power of an intermitting member is switched and intermitted by a rotary lever(451) turned according to the shape of an outer peripheral surface of the cam. The intermitting member comprises a switching terminal(442) for applying input power; a connecting terminal(444) switched by turning a terminal lever of the switching terminal by the rotary lever; and a driving lead connected with the terminal lever pushed by the rotary lever, to apply the input power to a driving motor of the driving member. The cam is rotated together with a cam shaft gear(434a) on a co-axial line. The outer peripheral surface of the cam comprises a circular surface, an inner placing groove, and a circular arc-shaped middle groove. The circular surface contacts with a tip portion of a guide piece of the rotary lever to push the terminal lever together with the rotary lever. The guide piece of the rotary lever is contacted to the middle groove to prevent the terminal lever from being pressed by the rotary lever.

Description

Small Timer {SMALL-SIZED TIMER}

The present invention relates to a small timer, and more particularly, to a small timer to interrupt all the positive poles of the supplied power supply, to increase switching efficiency and to reliably interrupt the power supply.

In general, the timer forms a deceleration sequence by connecting a series of gears to the synchronous motor, and when the motor rotates, the motor type timer operates the switch by setting the time in such a manner that the rotation speed decreases according to the gear reduction ratio. For example, there is a self-winding timer that operates the switch by setting the time in such a manner that the gear is connected by a spring to form a deceleration heat and the time is delayed while the rotational speed is decreased according to the gear reduction ratio.

The conventional timer is to rotate the adjustment knob to adjust the set time, and then switch to one supply power to be turned on or off when the set time ends. The timer provided as described above is installed in electrical and electronic products, and is installed to be turned on / off with respect to an operating power source.

However, most of the timers according to the related art are designed to interrupt only one terminal with respect to the positive terminal of the power supply, so that the power is connected by the wiring of the terminal that is not interrupted, and thus there is a risk of electric shock and malfunction at any time.

In addition, the conventional timer has a limitation in applying to various electric and electronic products because its structure is difficult to configure small.

The present invention for overcoming the above problems is to interrupt both the positive pole of the power supply, to increase the switching efficiency, to reliably interrupt the power supply, when the power supply is not always connected to both terminals. Therefore, there is a purpose to make safe use of electronic devices.

In addition, the rotating lever operated with the cam has a single configuration to control both of the positive poles so that the switch can be stably operated. Furthermore, the driving member and the cam are separated from each other. The purpose is to increase the efficiency of the work by enabling separate replacement.

Small timer according to the present invention for achieving the above object,

Cam 434 is interlocked by the drive member 420 inside the timer case 410, is intermittent by the rotation lever 451 rotated according to the shape of the outer peripheral surface (4344) of the cam 434 The input power of the member 440 is provided to be switched, and the intermittent member 440 is provided with a switching terminal 442, a connection terminal 444, and a driving lead 443, and the switching terminal 442. The input power is applied to the terminal, and the connection terminal 444 is provided so that the terminal lever 4421 of the switching terminal 442 is moved by switching by the rotary lever 451. The driving lead 443 Is connected to the terminal lever 4421 pressed by the rotary lever 451 is provided to apply an input power to the drive motor (M) of the drive member 420, the cam 434 is the drive member Cam shaft gear 434a which is decelerated and rotated in association with the drive motor M of 420 It is provided to be rotated, the cam 434 is the outer peripheral surface (4344) is formed of a circular surface (4345), the inner mounting groove (4347) and the intermediate groove (4346) of the arc shape of the middle two stages, the circular surface 4245 is provided such that the terminal lever 4421 is pushed together with the rotary lever 451 while the guide piece 452 of the rotary lever 451 is in contact with the rotary lever 451. The guide piece 452 of 451 is in contact with the terminal lever 4421 by the rotary lever 451 is characterized in that it is provided so as not to be pressed.

The intermittent member 440 is provided with a terminal case 448 for fixing the switching terminal 442, the connection terminal 444 and the driving lead 443, the intermediate height of the terminal case 448 The intermediate plate 446 has a flat plate shape, and the switching terminal 442 is provided as switching terminals 442a and 442b at both sides of the intermediate plate 446. 444 is provided as connection terminals 444a and 444b of both poles, and the rotary lever 451 presses the upper pressing portion for pressing the switching terminals 442a and 442b of the upper and lower portions of the intermediate plate 446. 454a and a lower pressing portion 454b, the upper pressing portion 454a and the lower pressing portion 454b are formed in a projection shape, the rotary lever 451 is the upper pressing portion 454a and A plate groove portion 453 may be formed between the lower pressing portions 454b so that the front end portion of the intermediate plate 446 may be inserted (both sides). Pole switching intermittent structure).

In addition, the intermittent member 440 is provided with a terminal case 448 for fixing the switching terminal 442, the connection terminal 444 and the driving lead 443, the intermediate height of the terminal case 448 A plate-shaped intermediate plate 446 is provided, and the intermediate plate 446 is provided with a switching terminal 442a and a connection terminal 444a, which are one poles, and the other side of the intermittent member 440. A pole power supply terminal 445 is provided, and the rotary lever 451 is provided with an upper pressing portion 454a for pressing the switching terminal 442a on the upper portion of the intermediate plate 446, and the upper pressing portion 454a. ) Is formed in a protrusion shape, and the rotary lever 451 may be formed with a plate groove portion 453 so that the front end portion of the intermediate plate 446 can be inserted at the middle height below the upper pressing portion 454a. (Unipolar switching intermittent structure).

In addition, the intermittent member 440 has a terminal case 448 in which a contact point of the switching terminal 442 and a contact point of the connection terminal 444 are located and are provided to reciprocate in the longitudinal direction of the timer case 410. The timer case 410 is provided with an operating lever 4481 connected to the terminal case 448 reciprocating in the longitudinal direction along the lever hole 4114 formed on the upper surface of the terminal case 448 May be provided to be transported.

Furthermore, the timer case 410 is provided with a bolting blade portion 416 formed with a screw hole for bolting, or a binding rib 417 is formed on the side for rib coupling, and a lamp shaped round 418 on the upper circumference. May be formed and provided.

The present invention provided as described above has the effect of interrupting both the anode of the power supply to be supplied, to increase the switching efficiency, and to reliably interrupt the power supply.

In addition, when the power is cut off, since the power is not always connected to both terminals, there is an advantage that the electronic device can be used safely.

In addition, there is an advantage that the switching lever can be stably operated because the rotating lever operating with the cam is intermittently connected to both anodes.

Furthermore, the driving member and the cam are spaced apart from each other, and even if the driving member is defective or replaced, only the driving member can be separated and replaced, thereby increasing work efficiency.

Hereinafter, described in detail with reference to the accompanying drawings.

1 and 2 are perspective views of one embodiment and another embodiment of a small timer according to the present invention, Figure 3 shows a bottom perspective view of the lower case 412 of the small timer according to the present invention in an open state. will be.

And Figure 4 is a schematic cross-sectional view of the drive member of the small timer according to the present invention, Figure 5 is a perspective view of the driving unit and the cam in the open state of the upper case of the small timer according to the present invention, Figure 6 A perspective view of a rotating lever of a small timer according to the invention. 7 is a perspective view of a terminal case of a small timer according to the present invention, Figures 8a and 8b is a circuit diagram of a small timer according to the present invention, Figures 9 to 12 is the operation of the small timer according to the present invention FIG. 13 illustrates a perspective view of a single pole switching intermittent structure of a small timer according to the present invention.

That is, the small timer (T) according to the present invention, as shown in Figures 1 to 13, is provided with a cam 434 is rotated by the drive member 420 inside the timer case 410, the cam 434 The input power of the control member 440 is to be intermittent switching by the rotary lever 451 rotated along the curvature of the outer peripheral surface (4344).

The intermittent member 440 is provided with a switching terminal 442, a connection terminal 444 and a driving lead 443, the switching terminal 442 is provided so that the input power is applied, the connection terminal 444 may be provided so that the terminal lever 4421 of the switching terminal 442 is moved by the rotation lever 451 to control the switching. In order to suit the circuit configuration, power may be provided to the connection terminal side.

In addition, the cam 434 is to be coaxially rotated with the cam shaft gear 434a rotated by the interlocking gear 425 interlocked with the drive motor M of the drive member 420, from the drive motor (M) The rotation of the rotational force is transmitted to the decelerated state by the reduction gear members of the driving member 420. The time required for one rotation of the cam is 30 seconds to 24 hours or more may be provided to suit the situation.

In addition, the cam 434 has an outer circumferential surface 4344 formed of a circular surface 4345, an inner seating groove 4347, and an intermediate groove 4346 having an arc shape of an intermediate second stage. The terminal piece 4421 is pushed together with the rotary lever 451 while the guide piece 452 of the rotary lever 451 contacts, and the intermediate groove 4452 of the rotary lever 451. The guide pieces 452 are in contact with each other so that the terminal lever 4421 is not pressed by the rotation lever 451.

Furthermore, the intermittent member 440 is provided with a terminal case 448 for fixing the switching terminal 442, the connection terminal 444 and the driving lead 443, the intermediate height of the terminal case 448 In the plate-shaped intermediate plate 446 is provided, in particular, as shown in Figure 6 the rotary lever 451 is provided with a plate groove portion 453 which is a cut groove is formed so that the intermediate plate 446 can be inserted One of the features.

Therefore, in the small timer according to the present invention, the intermittent members 440 may be provided with the intermittent members up and down about the intermediate plate 446 by a separate operation, and of course, when the intermediate plates are two or multiple, The terminal poles may be provided to simultaneously control the switching.

In particular, in the small timer (T) according to the present invention, both ends of the power supply are provided to be individually switched by interposing the upper and lower sides of the intermediate plate (FIG. 8A, etc.), or switching only to the upper or lower one side of the intermediate plate. It may be provided (Figs. 8B and 13).

First of all, referring to the example of the positive switching interruption, it is provided to switch the interruption of the power terminals of both poles of the power supply terminal, such a positive switching circuit interrupts both the positive pole at the same time to ensure that the power supply and shutdown is made stable. It is for.

That is, the intermittent member 440 is provided with switching terminals 442a and 442b of both poles and connection terminals 444a and 444b of both poles above and below the intermediate plate 446, and the rotation lever ( 451 is provided with an upper pressing portion 454a and a lower pressing portion 454b that press the upper and lower switching terminals 442a and 442b to the upper portion of the intermediate plate 446, and the upper pressing portion 454a. ) And the lower pressing portion 454b are formed in a projection shape.

In addition, the intermittent member 440 is a terminal case 448, the contact of the switching terminal 442 and the contact of the connection terminal 444 is located and is provided to enable reciprocating movement in the longitudinal direction of the timer case 410. The timer case 410 is provided with an operating lever 4481 reciprocating in the longitudinal direction along the lever hole 4114 formed on the upper surface is characterized in that the terminal case 448 is provided to be transferred. .

As such, when the operation lever 4481 is moved, the terminal case 448 is moved, and at this time, a leaf spring 401 is provided between the outer wall of the terminal case 448 and the inner wall of the case of the intermittent member 440, and the leaf spring 401 is provided. One side is fixedly installed in the terminal case 448, the other side is provided to be coupled to the spring hole 402 formed on the inner wall of the case intermittent member 440. Accordingly, the terminal case 448 is moved by the movement of the operation lever 4481, and the leaf spring 401 is provided to be fixed by being moved from one spring hole 402 to the other spring hole. Of course, since the terminal case 448 is formed in a structure divided into two around the intermediate plate, it can be provided with a spring hole 402 and the leaf spring 401, respectively.

Although the configuration of the operation lever 4481 is shown as a member for transferring the terminal case 448, the present invention is not limited thereto, and the terminal case 448 may be configured to be transferred in various ways. For example, it may be configured by applying a seesaw switch or a pushbutton switch. In other words, the terminal case is transferred to the other side by pressing the seesaw switch rotated around the center hinge to one side, and the terminal case is transferred to the one side again when pressed.

And the timer case 410, as shown in Figure 1 is provided with a bolting blade portion 416 formed with a screw hole for the bolt coupling, it may be provided to facilitate mounting on the electronic device body or circuit board.

In addition, a binding rib 417 is formed on the side for rib coupling as shown in FIG. 2, and a round shape 418 is formed on the upper circumference, and a small timer T according to the present invention is provided in the binding groove of the electronic device. It may be provided to be easily bound.

Looking at the operation of the small timer (T) according to the present invention provided as described above are as follows.

That is, as shown in FIG. 2, when the operation knob 4446 provided on the upper portion of the small timer T is rotated, the cam 434 coaxially rotated by the rotation shaft 4435 of the operation knob 4476 is also rotated together. . Prior to this, as shown in FIG. 2, when the operation lever 4481 formed on one side of the upper case 411 of the small timer T is moved in the direction of the driving member side, the terminal case 448 moves as shown in FIG. 9. In this state, the cam 434 is also rotated by the rotation of the operating knob 4446 so that the guide piece 452 of the rotary lever 451 positioned in the intermediate groove 4344 of the outer circumferential surface 4344 has a circular surface ( 4345) to be rotated.

At this time, the plate groove portion 453 is formed at the center of the rear surface of the rotary lever 451, and is slid to the upper and lower portions of the intermediate plate 446 formed at the intermediate height of the intermittent member 440. Accordingly, while the rotary lever 451 is freely rotated without being caught by the intermediate plate 446, the switching terminal which is a terminal of both poles of the switching terminal 442 by the upper pressing portion 454a and the lower pressing portion 454b on the rear surface. Push 442a and 442b.

Thus, as shown in FIG. 10, the contact 4442 at the end of the switching terminal 442 is in contact with the second contact 4442 of the connection terminals 444a and 444b. In addition, the rear center portion of the switching terminal 442 is in contact with the driving lead 443 and the input power is applied to the resistor 422 and the bobbin coil 421 through the driving lead 443.

At this time, both terminals of the bobbin coil 421 are connected to each other through the switching terminals 442a and 442b, the driving lead, and the like, which are vertically applied.

When the power is applied to the bobbin coil 421 as described above, the driving motor M is operated. As a result of the driving member shown in FIG. 4, the motor gear 432 interlocked with the driving motor M is thereby provided. Rotating, the first gear (4331) engaged with the motor gear to the top of the fixed plate (412 ') is rotated. Thus, the large gear of the second gear 4311 engaged with the small gear of the first gear 4331 is rotated, and the second gear 4311 rotates the third gear 4332, and the fourth gear 4312, the first gear. As the rotation is decelerated through the fifth gear 4333, the sixth gear 4313, the seventh gear 4342, and the eighth gear 4314, the final gear 4335 is rotated. Accordingly, the final gear 4335 rotates the rotation shaft 4435, and the rotation shaft 4343 protrudes out of the driving member 420 so that the external driving gear 4336 is rotated, and the driving gear 4336 is an interlocking gear ( 425 is rotated, and the interlocking gear rotates the camshaft gear 434a so that the cam 434 which is coaxially rotated with the camshaft gear 434a is rotated.

As a result of the rotation of the cam 434, the guide piece 452 of the rotary lever 451 in contact with the circular surface 4435 of the outer circumferential surface 4344 is positioned as the intermediate groove 4344, and is switched as shown in FIG. 9. The terminal lever 4421 of the terminal 442 is not pressed. Accordingly, the contact 4422 of the switching terminal 442 and the second contact 4442 of the connection terminal 444 do not conduct, so that no current flows. In addition, the switching terminal 442 and the driving lead 443 is also separated from the operation of the timer is to be stopped. As a result, during the timer operation, in the state that power was supplied to the connecting terminals 444a and 444b through the switching terminals 442a and 442b of the upper and lower anodes, the off-contact switching in which conduction is interrupted and the set time of the timer is terminated. It will be a crackdown.

11 and 12 showing another operation, first, when the operation lever 4481 on the upper part of the time case 410 is pushed to the terminal side, the terminal case 448 also moves together. Will be. In this case, as shown in FIG. 11, the contact 4422 of the switching terminal 442 and the first contact 4444 of the connection terminal 444 are in a conductive state, and thus a power supply is supplied.

When the operation knob 4446 is rotated, the guide piece 452 of the rotation lever 451 is separated from the intermediate groove 4452 of the cam 434 to contact the circular surface 4345. Thus, as shown in FIG. 12, the conduction between the contact 4422 of the switching terminal 442 and the first contact 4444 of the connecting terminal 444 is broken, and the rear middle portion of the switching terminal 442 and the driving lead 443 are also disconnected. ) Are contacted with each other and power is applied to the driving motor (M).

Thus, when the timer has been activated and set, the guide piece 452 of the rotary lever 451 that has been in contact with the circular surface 4345 of the outer peripheral surface 4344 of the cam 434 is in contact with the intermediate groove 4452 again. . Accordingly, since the rotary lever 451 does not push the terminal lever 4421 of the switching terminal 442, the contact 4422 of the switching terminal 442 and the first contact 4444 of the connection terminal 444 are connected to each other. It becomes a state. At this time, since the switching terminal 442 and the driving lead 443 are separated from each other, power is not supplied to the driving motor M, and thus the timer operation is stopped.

In the above example, when the operation knob 4446 is further rotated, the guide piece 452 of the rotary lever 451 is positioned in the seating groove 4477 of the cam 434, and the rotary lever 451 is a terminal lever ( Since the 4441 is not pushed, the contact 4422 and the connection terminal 444 of the switching terminal 442 are always in a conductive state with each other.

Thus, the conduction and interruption of the switching terminals 442a and 442b, which are supplied to the upper and lower portions of the intermediate plate 446 of the control member 440, and the connection terminals 444a and 444b, which are supplied with power, There is an advantage that the switching operation at the same time for the lower anode. Particularly, the rotary lever 451, which is an operating member, is formed in a unitary form. The guide piece, which is a part in contact with the cam, is formed with a sharp tip of a triangular shape, and the other side protrudes to effectively press the switching terminal. By forming the upper pressing portion and the lower pressing portion in the shape of a projection, it is possible to operate while rotating based on one side of the timer case 410, there is an advantage that the stable switching operation.

In addition, the drive member and the cam is spaced apart from each other, even if the drive member is defective or replaced, only the drive member can be replaced and replaced to increase the work efficiency.

In this example, the switching terminal 442 is used as the upper switching terminal 442a and the lower switching terminal 442b for the intermediate plate 446, and the connecting terminal 444 is connected to the upper connection terminal 444a and the lower side. An embodiment of the anodic switching interruption using the connection terminal 444b is shown. Therefore, the power supply terminal for operating the drive motor is provided to be supplied through the drive lead of the upper and lower intermediate plate. Accordingly, as shown in FIGS. 8B and 13, only a pair of switching terminals 442 and connection terminals 444 may be configured on one side of the upper and lower sides, and only the other terminal of the other terminal may be configured to apply current to the driving motor. can do. That is, as shown in the example of FIG. 13, the switching terminal 442a and the connection terminal 444a are intermittently switched with respect to the intermediate plate, and a driving lead is provided to drive contact with the upper switching terminal 442a. The driving lead is connected to one terminal of the bobbin coil, and the other terminal of the bobbin coil is connected to a terminal provided by the lower switching terminal 442b. The lower switching terminal 442b is provided only as a terminal for supplying power to the bobbin coil side and does not play a role in switching interruption. Therefore, in the case of the short-time switching intermittent compact timer, the switching intermittent operation is performed only between the upper switching terminal 442a and the connecting terminal 444a.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art without departing from the spirit and scope of the invention described in the claims below In the present invention can be carried out by various modifications or variations.

1 is a perspective view of one embodiment of a small timer according to the present invention.

Figure 2 is a perspective view of another embodiment of a small timer according to the present invention.

Figure 3 is a bottom perspective view of an open state of the lower case of the small timer according to the present invention.

4 is a schematic cross-sectional view of a driving member of a small timer according to the present invention.

Figure 5 is a perspective view of the drive unit and the cam of the upper case of the small timer according to the present invention in the open state.

Figure 6 is a perspective view of a rotary lever of a small timer according to the present invention.

7 is a perspective view of a terminal case of a small timer according to the present invention.

8A and 8B are circuit diagrams of a small timer according to the present invention.

9 to 12 are exemplary views for the operation of the small timer according to the present invention.

Figure 13 is a perspective view of the structure of the single-pole switching interruption of the small timer according to the present invention.

<Explanation of symbols for the main parts of the drawings>

T: Small Timer M: Drive Motor

410 timer case 420: driving member

434: Cam 434a: Camshaft Gear

440: intermittent member 442: switching terminal

443: driving lead 444: connection terminal

446: intermediate plate 448: terminal case

451: rotation lever 452: guide

453: plate groove

Claims (5)

Cam 434 is interlocked by the drive member 420 inside the timer case 410, is intermittent by the rotation lever 451 rotated according to the shape of the outer peripheral surface (4344) of the cam 434 The input power of the member 440 is provided to be switched off, The intermittent member 440 includes a switching terminal 442, a connection terminal 444, and a driving lead 443. The switching terminal 442 is provided to receive an input power, and the connection terminal 444 is provided. ) Is provided so that the terminal lever 4421 of the switching terminal 442 is moved by the rotation lever 451 to be switched and the driving lead 443 is pressed by the rotation lever 451. It is connected to (4421) is provided so that the input power is applied to the drive motor (M) of the drive member 420, The cam 434 is provided to be coaxially rotated with the cam shaft gear 434a which is decelerated and rotated in association with the driving motor M of the driving member 420. The cam 434 has an outer circumferential surface 4344 having a circular surface ( 4345), the inner mounting groove (4347) and the intermediate groove (4346) of the arc shape of the middle two-stage, the circular surface (4345) is the guide piece 452 of the rotary lever 451 while contacting The terminal lever 4421 is pushed together with the rotary lever 451, and the guide piece 452 of the rotary lever 451 contacts the intermediate groove 4452 by the rotary lever 451. Small terminal, characterized in that the terminal lever (4421) is provided so as not to be pressed. The method of claim 1, The intermittent member 440 is provided with a terminal case 448 for fixing the switching terminal 442, the connection terminal 444 and the driving lead 443, The intermediate height of the terminal case 448 is provided with a plate-shaped intermediate plate 446, the upper and lower portions of the intermediate plate 446, the switching terminal 442 is a switching terminal 442a, 442b of both poles ) And the connection terminal 444 is provided as connection terminals 444a and 444b of both poles, The rotary lever 451 is provided with an upper pressing portion 454a and a lower pressing portion 454b for pressing the switching terminals 442a and 442b of the upper and lower portions of the intermediate plate 446, and the upper pressing portion 454a and the lower pressing portion 454b are formed in the shape of a protrusion, and the rotary lever 451 has a tip end portion of the intermediate plate 446 between the upper pressing portion 454a and the lower pressing portion 454b. Small timer, characterized in that the plate groove portion 453 is formed to be inserted. The method of claim 1, The intermittent member 440 is provided with a terminal case 448 for fixing the switching terminal 442, the connection terminal 444 and the driving lead 443, The intermediate height of the terminal case 448 is provided with a plate-shaped intermediate plate 446, the upper portion of the intermediate plate 446 is provided with a switching terminal 442a and a connection terminal 444a which is one side pole, One side of the control member 440 is provided with a power terminal 445 that is the other side pole, The rotary lever 451 is provided with an upper pressing portion 454a for pressing the switching terminal 442a on the upper portion of the intermediate plate 446, the upper pressing portion 454a is formed in a projection shape, the rotation The lever 451 is a compact timer, characterized in that the plate groove portion (453) is formed so that the front end portion of the intermediate plate (446) can be inserted in the middle of the upper pressing portion (454a). The method of claim 1, The intermittent member 440 has a terminal case 448 in which the contact point of the switching terminal 442 and the contact point of the connection terminal 444 are located and are provided to reciprocate in the longitudinal direction of the timer case 410. Equipped, The timer case 410 is provided with an operating lever 4481 connected to the terminal case 448 which is reciprocated in the longitudinal direction along the lever hole 4114 formed on the upper surface, so that the terminal case 448 is transferred. Small timer, characterized in that. The method according to any one of claims 1 to 4, The timer case 410 is provided with a bolting blade portion 416 formed with a screw hole for the bolt coupling, or a binding rib 417 is formed on the side for the rib coupling, and a lamp-shaped round 418 on the upper periphery Small timer, characterized in that provided is provided.

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