KR102066047B1 - Mechanical timer with adjustable time - Google Patents

Abstract

The present invention relates to a mechanical timer operated without using power and, more specifically, to a mechanical timer capable of changing time adjustment of a timer. The mechanical timer capable of adjusting time comprises: a housing; an operating shaft protruding forward of the housing; a toothed wheel mounted to the housing for free rotation; a deceleration unit having a plurality of deceleration gears connecting the operating shaft and the toothed wheel; a dust removal member mounted to the housing for seesaw motion and having one pair of pins intersected and inserted into teeth formed on an outer circumferential surface of the toothed wheel; and a time adjusting member varying rotational speed of the toothed wheel by adjusting the displacement range of the seesaw motion of the dust removal member.

Description

Mechanical timer with adjustable time

The present invention relates to a mechanical timer that operates without using a power source, and more particularly to a mechanical timer that can change the timing of a timer.

In general, a timer is a member that allows intended operation to be performed after a predetermined time has elapsed, and is used for delay operation in various machinery. For example, emergency evacuation emergency doors used in tunnels are designed to be closed automatically after a certain time after a person opens and evacuates the emergency door, which allows the open door to remain open for a certain time and then close. A timer is used.

The mechanical timer does not have an electronic unit and does not require a separate power supply. This can be used in place of an electronic timer, for example, when it is expected to be used irregularly over a long period of time, or when it is necessary to operate with a delay time in case of a power failure, or a mechanical device installed in a place where a strong magnetic field is formed outside.

Mechanical timers according to the prior art are manufactured with a delay time determined from the initial design. As a result, it is cumbersome to change the design and manufacture it in the place of use where the delay time different from the intention is required in the design.

Republic of Korea Patent Publication No. 10-2006-0135470 (2006.12.29) Republic of Korea Patent No. 10-0703009 (2007.03.28)

The present invention is to provide a mechanical timer that can adjust the counting time, the delay time can be changed.

Other detailed objects of the present invention will be apparently understood and understood by those skilled in the art through the following detailed description.

In order to solve the above problems, the present invention is an embodiment, a housing, an operating shaft protruding toward the front of the housing, a gear wheel freely rotatably mounted to the housing, a plurality of deceleration connecting the operating shaft and the gear wheel A deceleration unit having a gear, a dust removal member having a seesaw movement mounted on the housing and having a pair of pins intersected with teeth formed on an outer circumferential surface of the gear wheel, and displacement of the seesaw movement of the dust removal member. The present invention provides a time adjustable mechanical timer including a time adjusting member for adjusting a range to change a rotation speed of the cogwheel.

Further, the dust removal member includes an anchor shaft connected to the housing, and a vibration elimination plate rotatably mounted to the anchor shaft to which the pins are mounted on both sides, and the support piece extending to one side, wherein the time adjustment member includes: The support piece has a trapezoidal guide hole through which the support piece passes, and is slidably mounted with respect to the housing, so that the support piece contacts the side surface of the guide hole in accordance with the seesaw motion of the dust removing member, thereby The amplitude can be defined.

On the other hand, the teeth of the gear wheel, the front portion is formed in the inclined surface with respect to the rotational direction of the gear wheel, the rear portion is formed in a vertical plane coinciding with the radiation from the center of rotation of the gear wheel, the operation of the gear wheel and the exhaust member Can be made without blockage, and the reverse rotation of the cogwheel can be prevented.

According to an embodiment of the present invention, the delay time may be adjusted in the mechanical timer. In particular, the delay time can be adjusted without losing the rotational force for rotating the working shaft.

Other effects of the present invention will be apparent to and understood by those skilled in the art through the following detailed description or in the course of carrying out the present invention.

1 is a perspective view of a mechanical timer according to an embodiment of the present invention.
Figure 2 is a rear perspective view showing the main parts of the embodiment shown in FIG.
Figure 3 (a) is a front view of the embodiment shown in Figure 1, (b) is a plan view.
Figure 4 is a bottom perspective view showing the operation of the time adjustment member employed in the embodiment shown in FIG.
5 is a rear view schematically showing a state of use of the dust removal member employed in the embodiment shown in FIG.
Figure 6 is a rear view schematically showing another use state of the dust removal member employed in the embodiment shown in FIG.

Hereinafter, with reference to the accompanying drawings will be described the configuration, function and operation of the mechanical timer capable of adjusting the time according to the present invention. However, the same reference numerals for the same or similar components will be used throughout the drawings.

In addition, in the following description, terms such as 'first' and 'second' are used to distinguish components having technical meanings within the same range for convenience. That is, any one configuration may be optionally named 'first configuration' or 'second configuration'.

The accompanying drawings show an applied embodiment of the present invention, and the technical spirit of the present invention should not be limitedly interpreted through the accompanying drawings. If some or all of the illustrations shown in the drawings are to be interpreted as not necessarily in the form, shape, order required for the practice of the invention, in view of those skilled in the art, this does not limit the invention described in the claims.

1 to 3 relate to a mechanical timer according to an embodiment of the invention.

Mechanical timer 100 according to an embodiment of the present invention includes a housing 10, the operating shaft 20, the gear wheel 30, the reduction unit 40, the dust removal member 50 and the time adjusting member 60. do. Furthermore, it may further include a leaf spring unit 70 for storing mechanical power in an additional configuration that can be omitted, and a clutch bearing 80 to allow rotation in one direction only.

First, the housing 10 is for installing components below the operating shaft. In the illustrated embodiment, the housing 10 includes a front plate 11 and a rear plate 12 spaced forward and rearward, and an auxiliary plate behind the rear plate 12. (13) is provided. The front plate 11, the rear plate 12 and the auxiliary plate 13 is firmly coupled to each other by a plurality of horizontal bars (14).

The housing 10 rotatably grips each shaft and mounts the time adjustment member 60 so as to be slidably movable, and the appearance thereof may be changed in various ways.

The front end of the working shaft 20 penetrates the front plate 11 and protrudes long toward the front of the housing 10. The working shaft 20 is a part that is mechanically connected to another external mechanical device (not shown), and a structure such as a trigger may be mounted at the tip of the working shaft.

In the mechanical timer 100 according to the embodiment of the present invention, the time required for the working shaft to rotate in a certain angle range is the delay time of the timer. For example, a trigger is mounted on the operating shaft, so that a slowly rotating trigger can be used in contact with a switch member of another mechanical device, and it is necessary for the operating shaft with the trigger to rotate at an angle. The time it becomes becomes the delay time. Therefore, the present invention is one of the objects of the invention to be able to adjust the speed at which the operating shaft rotates.

1 and 3 (b), the leaf spring 70 and the clutch bearing 80 may be coupled to the operating shaft 20. Here, the leaf spring portion 70 may be a spring to store the power for operating the timer, the clutch bearing (one way clutch bearing) to allow rotation in only one direction, the spring without the rotation of the operating shaft 20 It is to be able to wind.

Specifically, the clutch case 801 having a shape surrounding the outer circumferential surface of the clutch bearing 80 may be connected to the outer case 701 of the leaf spring part 70. When the clutch case 801 connected to a separate mechanical device is rotated, the outer case 701 of the leaf spring part 70 rotates together and winds up the mainspring provided therein to store power. At this time, the operation shaft 20 is not rotated by the clutch bearing 80. The power stored in the mainspring thus provides power to rotate the operating shaft 20.

Furthermore, the leaf spring portion 70 is provided in both the front and rear of the operating shaft 20, it is possible to increase the rotational force transmitted to the operating shaft 20 (see Fig. 3 (b)).

If other means for providing power for rotating the working shaft are provided, the above-described configuration of the leaf spring portion and the clutch bearing can be omitted. For example, a lever may be mounted to the operating shaft, and a spring may be mounted to the end of the lever to apply rotational force to the operating shaft. As such, the structure for providing the power to rotate the working shaft may be variously changed according to the mechanical device utilizing the timer.

The gearwheel 30 is mounted to the housing so as to be freely rotatable. 2 to 3, the cogwheel 30 is positioned between the rear plate 12 and the auxiliary plate 13 and is mounted to the wheel shaft 32 protruding rearward through the rear plate 12.

The reduction unit 40 includes a plurality of reduction gears connecting the operation shaft 20 and the cogwheel 30. In the embodiment of the present invention, the gear wheel 30 is sequentially passed through the first reduction gear 41, the second reduction gear 42, and the third reduction gear 43, starting with the gear 21 of the operating shaft 20. The power is transmitted to the gear 321 of the wheel shaft 32 of the ().

As the reduction unit 40 is mounted, the reduction ratio between the cogwheel 30 and the operation shaft 20 is greatly increased, and the rotation amount of the operation shaft 20 is relatively smaller than the rotation amount of the cogwheel 30.

The configuration of the reduction unit may be variously changed. For example, the reduction ratio of the reduction gear and the number of reduction gears may be differently combined according to the intended delay time.

The dust removing member 50 is mounted to the anchor shaft 53 mounted between the rear plate 12 and the auxiliary plate 13. The dust elimination member 50 is mounted on each of the approximately Y-shaped dust elimination plate 51 and both protruding portions protruding upward of the dust elimination plate 51 and alternately engages the teeth of the tooth wheel 30. It includes. The pin 52 protrudes long toward the cogwheel 30 from the exhaust plate 51, so that the protruding tip of the pin enters between the cogs of the cogwheel 30. In addition, the exhaust plate 51 is provided with a support piece 511 extending downwardly to face the position of the pins 52.

As the anchor shaft 53 penetrates through the exhaust member 50, the exhaust member 50 may swing around the anchor shaft 53.

A plurality of teeth 31 are formed on the outer circumferential surface of the gear wheel 30. Both pins 52 of the exhaust member 50 are inserted into the valley between the teeth 31 when the gear wheel 30 rotates. As the left and right pins 52 cross over the teeth 31 at an intersection, the dust exhaust member 50 performs a seesaw movement around the anchor shaft 53.

On the other hand, the time adjustment member 60 is a member for controlling the displaceable range of the seesaw motion of the dust removal member 50, thereby controlling the seesaw motion speed of the dust removal member 50 and the rotational speed of the working shaft 20 accordingly. That is, by making the seesaw movement of the exhaust member 50 faster or slower, the delay time of the timer 100 can be short or long.

Specifically, the time adjusting member 60 adjusts the range in which the support piece 511 provided in the dust removing member 50 reciprocates, thereby changing the range in which the dust removing member 50 can reciprocate. In the embodiment of the present invention, the time adjusting member 60 is a plate having a trapezoidal guide hole 61 through which the support piece 511 passes.

3 to 4, the rear plate 12 and the auxiliary plate 13 are formed with square holes 15 in the front and rear directions, so that the time adjustment member 60 can slide in these square holes 15. Is fitted. Although not shown in detail, means for temporarily fixing the position of the time adjustment member may be further provided.

The guide hole 61 formed in the time adjusting member 60 has a trapezoidal shape in which the inclined surface is placed in the left and right directions of the mechanical timer, and the support piece 511 of the dust removing member 50 protrudes downward through the guide hole 61. (See FIG. 4). When the dust removal member 50 swings, the left and right sides of the support piece 511 contact the slanted surface of the guide hole 61.

Here, the guide hole 61 may have an equilateral trapezoidal shape, and the width of the narrowest upper side 611 corresponds to the displacement of the support piece 511 when the seesaw motion of the exhaust member 50 is minimized, and The wide width of the lower side 612 may correspond to the displacement of the support piece 511 when the seesaw motion of the dust removal member 50 is maximized.

Although not shown, the time adjustment member may be replaced with various structures such as protrusions and partition walls that variably limit the displacement of the support piece within the range of the maximum movement displacement and the minimum movement displacement of the support piece.

Figure 5 shows the shape of the tooth provided in the gear wheel. 5 and 6 are exaggerated representation of some of the configuration to help understanding.

The front part 311 of each tooth 31 is formed in an inclined surface with respect to the rotational direction of the gearwheel 30, and the rear part 312 of the tooth 31 is formed in the vertical surface which matches radiation from the rotation center of a gearwheel. have.

Thus, the tooth 31 of the shape lying back with respect to the rotation direction of the toothed wheel 30, the operation of the pin 52 to be described later is made smoothly. It is also important for the cogwheel 30 not to rotate in the reverse direction.

Hereinafter, the operation of the mechanical timer according to the embodiment of the present invention will be described with reference to FIGS. 1 to 6.

When the operating shaft 20 is connected to a separate mechanical device to receive the rotational force, or the rotational force is transmitted by the plate spring 70 provided by itself, the rotational force is transmitted through the reduction unit 40 to the cogwheel 30 ) Is rotated.

As the cogwheel 30 rotates, a pair of pins 52 provided on the exhaust member 50 cross-regresses the bone between the cogs 31 so that the cogwheel 30 does not rotate quickly at once. I can't. If one pin enters the goal of the teeth, the other pin is missing from the goal, and the other pin enters the goal of the tooth as the pin that entered the goal of the tooth is removed. Operation of the dust removal member 50 to evenly rotate the speed of the gear wheel 30 is similar to the operation of the escapement (escapement) of the watch movement.

While the rotational speed of the gearwheel 30 is slowed by the exhaust member 50, the rotational speed of the gear 40 and the operation shaft 20 is slowed down. After all, it takes a certain time for the working shaft to rotate by the intended angle, which is the delay time of the timer.

On the other hand, the shape of the teeth 31 lying on the rear side allows the pins 52 entered between the teeth 31 to ride up the front portion 311 formed with a gentle inclined surface, so that the swing motion of the dust removal member 50 is increased. Make it smooth. When one side of the pin goes up the slope, the other side of the pin enters the goal between the other teeth. There will be no.

On the other hand, since the pin 52 climbs on the vertical rear portion 312 and cannot escape from the valley of the teeth 31, the reverse rotation of the gear wheel 30 is suppressed. The suppression of the reverse rotation of the cogwheel 30 affects the operating shaft 20 connected by the gear, thereby preventing the reverse rotation of the operating shaft.

In summary, the shape of the cog lying in the rear ensures the smooth operation of the dust removal member, so that the cog wheel can rotate smoothly without stopping by interference. It also prevents the gearwheel and the operating shaft from rotating in the reverse direction.

5 and 6 relate to the operation of the time adjustment member 60.

5 shows a case where the support piece 511 of the dust removal member 50 is located at the wide lower side portion 612 of the guide hole 61 so that the displacement amount of the seesaw motion of the dust removal member 50 is largely allowed. FIG. 6 relates to a case in which the support piece 511 is positioned at a portion of the upper side 611 of the narrow width of the guide hole 61 so that the displacement amount of the seesaw motion of the dust removal member 50 is allowed to be small.

Adjustment of which part of the guide hole 61 to place the support piece 511 is achieved by adjusting the protruding length of the time adjustment member 60 behind the auxiliary plate 13, as shown in FIG. .

The displacement amount of the dust removal member 50 swinging with respect to the anchor shaft 53 with the rotation of the cogwheel 30 is limited while both side surfaces of the support piece 511 contact the hypotenuse of the guide hole 61. . 5 and 6 illustrate displacement amounts of the dust removal member at angles A1 and A2.

In the case of allowing a large amount of displacement of the dust elimination member 50 as shown in FIG. 5, the time required for each swing operation of the dust elimination member 50 by entering and leaving each of the pins 52 deeply between the teeth 31 is removed. Will increase. On the other hand, as shown in FIG. 6, when the displacement amount of the dust removing member 50 is allowed to be small, the swing operation of the dust removing member 50 is accelerated as the pins 52 are shallowly advanced between the teeth 31. The rotation speed of the shaft 20 also increases.

Furthermore, when the pin 52 collides with the rotating gear wheel 30, elastic bending occurs on the pin. As the swing range of the exhaust member 50 increases, the restoring force of the pin, which is deformed by colliding with the tooth, is increased. It acts as a hindering factor in the rotation of the wheel, thereby slowing down the rotation of the cogwheel.

Due to the difference in the speed of the swing motion of the dust removal member, the rotation speed of the mounting shaft is faster in FIG. 6 than in FIG.

In other words, as the unit swing time of the exhaust member increases, the rotation of the working shaft below the cogwheel is delayed, so that the delay time is longer than in the case of FIG. 6. For example, when the width change of the upper and lower sides of the guide hole is 1.4 mm, a delay time difference of about 30 seconds can be obtained.

As a result, in actual use of the mechanical timer 100, the user can set the desired delay time by adjusting the withdrawal length of the time adjusting member 60. For example, in configuring the mechanical device to close the open fire door after a predetermined time using a mechanical timer, it is possible to adjust the time for the fire door to remain open. In other words, instead of replacing the timer with a separate delay time, there is a convenience that can adjust the delay time using the existing timer.

In addition, by adjusting the delay time in a manner that the guide hole 61 limits the range of motion of the support piece 511 of the exhaust member 50, there is no effect on the rotational force for rotating the operating shaft 20. There is an advantage that the delay time can be adjusted without fear of lowering the torque of the operating shaft.

100: timer
10: housing
11: front plate 12: rear plate 13: auxiliary plate
14: horizontal bar 15: square hole
20: working shaft 21: gear
30: Gear wheel
31: tooth 311: front portion 312: rear portion 32: wheel shaft 321: gear
40: reduction unit
41 first reduction gear 42 second reduction gear 43 third reduction gear
50: dust removal member
51: exhaust plate 511: support piece 52: pin 53: anchor shaft
60: time adjustment member
61: guide hole 611: upper side 612: lower side
70: leaf spring 701: outer case
80: clutch bearing 801: clutch case

Claims (3)

housing,
A working shaft protruding forward of the housing,
Toothed wheel rotatably mounted to the housing,
A reduction unit having a plurality of reduction gears connecting the operation shaft and the gear wheel;
A dust removal member mounted to the housing so as to be seesaw-movable and having a pair of pins intersecting the teeth formed on the outer circumferential surface of the gear wheel;
And including a time adjusting member for changing the rotational speed of the gear wheel by adjusting the displacement range of the seesaw motion of the dust removal member,

The exhaust member is
An anchor shaft connected to the housing;
It is rotatably mounted to the anchor shaft, the pin is mounted on both sides, and the exhaust plate includes a support plate extending to one side,

The time adjusting member has a trapezoidal guide hole through which the support piece passes, and is mounted to be slidably movable with respect to the housing. Characterized in that the amplitude of the swing motion of the member is limited.
Mechanical timer with adjustable time.
delete In claim 1,
The tooth of the gear wheel,
The front portion is formed as an inclined surface with respect to the rotational direction of the gear wheel, the rear portion is characterized in that the vertical surface coincides with the radiation from the rotation center of the gear wheel
Mechanical timer with adjustable time.

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