KR200446206Y1 - Apparatus for preventing drive motor from damage in digital door lock - Google Patents

Abstract

The present invention relates to a drive motor burnout prevention device of a digital door lock, and when the automatic locking device and the panic device are operated at the same time, the operation force of the panic device is blocked from being transmitted to the drive motor, and the drive motor by the operation force of the panic device is prevented. Its purpose is to prevent overloading and damage to the drive motor.

The present invention for achieving this purpose, the dead bolt, the latch bolt, the drive motor, the power transmission device for transmitting the driving force of the drive motor and the dead bolt at the same time by rotating the operation of the dead bolt and the latch bolt It includes a panic device for unlocking, an automatic locking device for locking the dead bolt as the door is closed, and the power transmission device includes a drive bevel gear installed on the motor shaft of the drive motor, a driven bevel gear fitted to the drive bevel gear, In the digital door lock is installed on the center of the bevel gear rotation axis of the driven bevel gear and provided with an actuating lever for pushing the dead bolt, the actuating lever is assembled to rotate and axially move relative to the driven bevel gear, The bevel gear and the actuating lever are connected by clutch means, and the clutch means transmits the driving force of the drive motor from the driven bevel gear to the actuating lever. To but connected to the driven bevel gear and the actuating lever, when the auto-lock and panic device to operate at the same time, so that the operation force of the inside handle is not transmitted to the driven bevel gear station from the operating lever to block the driven bevel gear and the actuating lever.

Description

Driving motor burnout prevention device of digital door lock {APPARATUS FOR PREVENTING DRIVE MOTOR FROM DAMAGE IN DIGITAL DOOR LOCK}

1 is a side view showing a conventional digital door lock,

2 is a cross-sectional view taken along the line II-II of FIG. 1 showing a mortise of a conventional digital door lock.

3 is a cross-sectional view showing a drive motor burnout prevention device of the digital door lock according to the present invention,

Figure 4 is an exploded perspective view of the clutch means constituting the drive motor burnout prevention apparatus of the present invention,

5 is an operation diagram showing the operation of the drive motor burnout prevention apparatus according to the present invention.

♣ Explanation of symbols for the main parts of the drawing ♣

1: Mortis 3: Dead Bolt

5: Latch Bolt 7: Outer Body

9: inner body 10: outer handle

12: inner handle 20: panic system

22: push flight 24: interlocking lever

30: automatic locking device 32: pressed piece

34: sensor 36: controller

40: drive motor 42: motor shaft

50: power train 52: drive bevel gear

54: driven bevel gear 54a: center of bevel gear rotation

56: operating lever 56a: operating lever rotation center axis

60: clutch means 62: engaging projection

64: coupling groove 70: spring

The present invention relates to a drive motor burnout prevention device of a digital door lock, and more particularly, by blocking the operation force of the panic device from being transmitted to the drive motor when the automatic locking device and the panic device are operated simultaneously. In addition, the present invention relates to a drive motor burnout prevention device of a digital door lock capable of preventing overloading of the drive motor due to the operating force of the panic device and damage of the drive motor.

Generally, as shown in FIG. 1, the digital door lock has a mortise 1 embedded in the door D, and the mortise 1 has a dead bolt 3 and a latch bolt 5. have.

The dead bolt 3 is for maintaining the locked state of the door D. The dead bolt 3 is released by manipulating the button 7a of the outer body 7 or a safety key having a semiconductor chip built therein (not shown). It is configured to be released by contacting the contact portion (7b) or by operating the manual operation device (9a) installed in the inner body (9).

The latch bolt 5 is for maintaining the closed state of the door D, and configured to be released by rotating the outer handle 10 or the inner handle 12 installed in the inner and outer bodies 9 and 7. do.

The digital door lock (hereinafter abbreviated as "door lock"), as shown in FIGS. 1 and 2, the dead bolt 3 and the latch bolt ( A panic system 20 capable of simultaneously unlocking 5) is provided.

The panic device 20 includes a push piece 22 provided on the central shaft 12a of the inner handle 12 and an interlock lever 24 provided on the mortise 1 so as to rotate while being pressed by the push piece 22. ). In particular, the interlock lever 24 is connected so that the distal end is interlocked with the dead bolt (3). Accordingly, the dead bolt 3 is released from the locking position A1 to the release position A2 while being pressed and rotated by the push piece 22.

According to the panic device 20, the dead bolt 3 and the latch bolt 5 can be released at the same time by manipulating the inner handle 12 only once, which is very convenient to use, and the door D can be quickly opened in an emergency. Can be opened.

And the door lock is equipped with the automatic locking device 30 which automatically moves the deadbolt 3 of the release position A2 to the locking position A1, when the door D is closed.

The automatic locking device 30 is a sensor for detecting a pressing movement of the pressing piece 32 and the pressing piece 32 installed on the mortise 1 so that the door D is pressed by the door frame D1 as the door D is closed. And a controller 36 for driving the drive motor 40 in the reverse direction in accordance with the detection signal of the sensor 34.

In particular, the controller 36, when the detection signal is input from the sensor 34, determines that the door D is closed, and drives the driving motor 40 in the reverse direction. In this case, the driving motor 40 driving in the reverse direction is performed. The power is transmitted to the dead bolt (3) through the power transmission device 50, the dead bolt (3), the reverse drive force is transmitted is moved from the unlocking position (A2) to the locking position (A1) automatically the door frame ( Locked to D1).

According to the automatic locking device 30, the door D is automatically locked to the door frame D1 as the door D is closed, so a separate manual operation for locking the door D is required. none. Thus, it is very convenient to use.

On the other hand, the power transmission device 50 for transmitting the driving force of the drive motor 40 to the dead bolt (3), the drive bevel gear 52 is provided on the motor shaft 42 of the drive motor 40, the drive A driven bevel gear 54 engaged with the bevel gear 52, and an operating lever 56 provided on the bevel gear rotation center shaft 54a of the driven bevel gear 54.

In particular, when the driven bevel gear 54 is rotated, the operating lever 56 rotates the dead bolt 3 to the locking position A1 while integrally rotating between the first position C1 and the second position C2. To the release position A2, or from the release position A2 to the locking position A1.

By the way, the conventional door lock, the result of the operation of the panic device 20 at the same time, when rotating the inner handle 12 to open the door (D) again in the process of operating the automatic locking device (30). As a result, it has been pointed out that the driving force of the driving motor 40 and the operating force of the inner handle 12 collide with each other so that the driving motor 40 is overloaded.

That is, when the automatic locking device 30 is operated, the driving force of the drive motor 40 is to move the dead bolt (3) from the release position (A2) to the locking position (A1) direction, the panic device (20) When is operated, the operating force of the inner handle 12 attempts to move the dead bolt 3 from the locking position A1 to the release position A2.

Therefore, when the automatic locking device 30 and the panic device 20 are operated at the same time, the driving force of the driving motor 40 to move the dead bolt 3 to the locking position A1, and the dead bolt 3 are released. The operating forces of the inner handle 12 to be moved to the position A2 collide with each other, and as a result, a disadvantage arises that the driving motor 40 is overloaded. In particular, by overloading the drive motor 40, there is a problem that the drive motor 40 is burned out or shortened life.

The present invention is devised to solve the conventional problems as described above, the object is, when the automatic locking device and the panic device is operated at the same time, by configuring the operation force of the panic device is not transmitted to the drive motor, It is to provide a drive motor burnout prevention device of a digital door lock to prevent the overload phenomenon of the drive motor by the operating force.

Another object of the present invention is to prevent the overload phenomenon of the drive motor by the operation force of the panic device, it is possible to prevent the burnout of the drive motor due to overload, and therefore, of the digital door lock that can extend the life of the drive motor To provide a drive motor burnout prevention device.

In order to achieve the above object, the present invention, a dead bolt, a latch bolt, a drive motor for driving the dead bolt, a power transmission device and an inner handle for transmitting the driving force of the drive motor to the dead bolt. And a panic device for releasing the dead bolt and the latch bolt at the same time as the rotation operation, and an automatic locking device for automatically locking the dead bolt as the door is closed, wherein the power transmission device is connected to the motor shaft of the drive motor. A digital door lock comprising a driving bevel gear installed, a driven bevel gear meshed with the driving bevel gear, and an actuating lever installed on a center of rotation of the bevel gear of the driven bevel gear and pushing the dead bolt. The actuating lever of the power train is assembled to be rotatable and axially movable relative to the driven bevel gear. A bevel gear and an actuating lever are connected by clutch means, and the clutch means connects the driven bevel gear and the actuating lever so that the driving force of the drive motor is transmitted from the driven bevel gear to the actuating lever, and the automatic locking device When the panic device is operated at the same time, the driven bevel gear and the operating lever is blocked so that the operating force of the inner handle is not transferred back from the operating lever to the driven bevel gear.

Hereinafter, a preferred embodiment of the drive motor burnout prevention device of the digital door lock according to the present invention will be described in detail with reference to the accompanying drawings (the same components as in the prior art are described using the same reference numerals).

First, before looking at the drive motor burnout prevention device of the present invention, with reference to Figure 2 briefly looks at the panic device 20 and the automatic locking device 30 of the door lock.

The panic apparatus 20 is provided with the push piece 22 provided in the center axis | shaft 12a of the inner handle 12, and the interlocking lever 24 which rotates while being pressed by the push piece 22. As shown in FIG. In particular, the interlock lever 24 is depressed by the push piece 22 to release the dead bolt (3) from the locking position (A1) to the release position (A2).

The panic device 20 is unlocked while the inner handle 12 is rotated, while the latch bolt 5 interlocked with the inner handle 12 moves from the locked position B1 to the released position B2. At the same time, the push piece 22 provided on the inner handle 12 also rotates by pressing the interlocking lever 24. Then, the dead bolt 3 connected to the interlock lever 24 is also released from the locking position A1 to the release position A2. Accordingly, as the inner handle 12 is rotated, the latch bolt 5 and the dead bolt 3 are released at the same time.

The automatic locking device 30 includes a pressing piece 32 pressed by the door frame D1 as the door D is closed, a sensor 34 detecting a pressing movement of the pressing piece 32, and a sensor ( The controller 36 is configured to drive the driving motor 40 in the reverse direction according to the detection signal of 34.

In particular, when the sensing signal is input from the sensor 34, the controller 36 determines that the door D is closed, drives the driving motor 40 in the reverse direction, and drives the power of the driving motor 40 driven in the reverse direction. The dead bolt 3 is transmitted to the dead bolt 3 through the power transmission device 50, and the dead bolt 3 to which the reverse driving force is transmitted moves automatically from the release position A2 to the locking position A1 and automatically moves to the door frame D1. Is locked in.

On the other hand, the power transmission device 50 for transmitting the driving force of the drive motor 40 to the dead bolt (3), the drive bevel gear 52 is provided on the motor shaft 42 of the drive motor 40, the drive A driven bevel gear 54 engaged with the bevel gear 52 and an actuating lever 56 provided on the bevel gear rotation center shaft 54a of the driven bevel gear 54.

In particular, when the driven bevel gear 54 is rotated, the operating lever 56 rotates the dead bolt 3 to the locking position A1 while integrally rotating between the first position C1 and the second position C2. To the release position A2, or from the release position A2 to the locking position A1.

Next, look at in detail with respect to the drive motor burnout prevention apparatus according to the present invention.

First, referring to Figures 3 and 4, the drive motor burnout prevention device of the present invention, provided with a power transmission device 50 for operatively connecting the drive motor 40 and the dead bolt (3), the power The actuating lever 56 of the delivery device 50 has a configuration that is rotatably and axially movable relative to the driven bevel gear 54.

The driven bevel gear 54 has a bevel gear rotation center shaft 54a, and a shaft hole 54b is formed in the shaft center of the bevel gear rotation center shaft 54a.

The actuating lever 56 has an actuating lever rotary center shaft 56a, which is pivotally fitted to the shaft hole 54b of the driven bevel gear 54 so as to be rotatable and axially movable. .

The actuating lever 56 rotates about the actuating bevel gear 54 because the actuating lever rotational center shaft 56a is rotatably and axially coupled to the shaft hole 54b of the driven bevel gear 54. Can move axially at the same time.

3 and 4 again, the drive motor burnout prevention device of the present invention includes a clutch means 60 for operatively connecting the driven bevel gear 54 and the operating lever 56.

Clutch means (60), the operating lever 56 to be engaged with the engaging projections 62 and the engaging projections 62 formed around the center of the bevel gear rotational axis (54a) of the driven bevel gear 54 Coupling grooves 64 are formed around the operating lever rotation center shaft 56a.

Coupling protrusions 62 are formed in a sawtooth type, a pair is formed at the end of the bevel gear rotation center axis 54a at intervals along the circumferential direction.

Coupling grooves 64 are formed in a sawtooth type, a pair is formed in the portion of the operating lever rotation center shaft 56a corresponding to the engaging projection 62 of the driven bevel gear 54.

Since the coupling protrusion 62 and the coupling groove 64 are formed in a sawtooth shape, the coupling protrusion 62 transmits power only in one direction. In particular, as shown in FIG. 3, when the driving motor 40 rotates forward to move the dead bolt 3 from the locking position A1 to the release position A2, the driving motor 40 is engaged with each other. It is configured to transmit the driving force of the driven bevel gear 54 to the actuating lever 56.

On the other hand, when the panic device 20 is operated, as shown in FIG. 5, when the operating force of the inner handle 12 is reversely transmitted to the operating lever 56, it slips against each other. As the phenomenon occurs, it is configured to block the operation force of the inner handle 12 reversely transferred from the operating lever 56 to the driven bevel gear 54.

Accordingly, during simultaneous operation of the panic device 20 and the automatic locking device 30, the operating force of the inner handle 12 is not reversely transmitted to the driven bevel gear 54, and the operating force of the inner handle 12 is reversely transmitted. As a result, the operating force of the inner handle 12 is not transmitted to the driving motor 40.

As a result, during operation of the panic device 20, the driving force of the driving motor 40 and the operating force of the inner handle 12 do not collide with each other, and thus, the driving motor 40 by the operating force of the inner handle 12. ) To prevent overload.

3 and 4, the clutch means 60 further includes a spring 70 for elastically pressing the actuating lever 56 in the direction of the driven bevel gear 54.

The spring 70 is a coil spring, one end of which is supported by the mortise 1 and the other end of which is supported by the operating lever 56.

The spring 70 is elastically pressurized the actuating lever 56 in the direction of the driven bevel gear 54, so that the engaging projection 62 of the actuating bevel gear 54 and the engaging groove 64 of the actuating lever 56 are secured. Make sure you stay engaged.

On the other hand, the spring 70 is a driven bevel gear generated when the tension is greater than the driving force of the drive motor 40, the driving force of the drive motor 40 and the operating force of the inner handle 12 in the opposite direction. It should be less than the torsional stress between 54 and the operating lever 56.

Because the tension of the spring 70 is greater than the driving force of the drive motor 40, the pressure greater than the driving force of the drive motor 40 is the coupling protrusion 62 and the operating lever 56 of the driven bevel gear 54 This is because it acts between the coupling grooves 64 of the driving motor, and a pressure greater than the driving force of the driving motor 40 must be applied between the coupling protrusion 62 and the coupling groove 64, so as to drive the driving motor 40 in the reverse direction. This is because the slip phenomenon of the coupling protrusion 62 and the coupling groove 64 does not occur due to the reverse driving force, and the automatic locking device 30 should not have the slip phenomenon of the coupling protrusion 62 and the coupling groove 64. 2), the reverse driving force of the drive motor 40 can be transmitted to the dead bolt 3 through the driven bevel gear 54 and the operating lever 56, and thus, the automatic locking device This is because the dead bolt 3 can move from the release position A2 to the locking position A1 during the operation of 30.

The reason why the tension of the spring 70 should be smaller than the torsional stress between the driven bevel gear 54 and the actuating lever 56 is that the tension of the spring 70 is the driven bevel gear 54 and the actuating lever 56. This is because when the driving force of the driving motor 40 and the operating force of the inner handle 12 collide with each other only when the torsional stress is smaller than the torsion stress, slippage may occur between the coupling protrusion 62 and the coupling groove 64. Only when the slip phenomenon occurs between the engaging projection 62 and the engaging groove 64, when the automatic locking device 30 and the panic device 20 is operated at the same time, the operating force of the inner handle 12 is driven motor 40 Because it is not reversed.

In the above described a preferred embodiment of the present invention by way of example, the scope of the present invention is not limited only to this specific embodiment, it can be changed appropriately within the scope described in the utility model registration claims.

As described above, according to the drive motor burnout prevention device of the digital door lock according to the present invention, when the automatic locking device and the panic device are operated at the same time, since the operating force of the inner handle is not transmitted to the drive motor, There is an effect that can prevent the overload phenomenon of the drive motor by the operation force of the handle in advance.

In addition, even when the automatic locking device and the panic device are operated at the same time, the overload phenomenon of the drive motor can be prevented, and thus the burnout of the drive motor due to the overload can be prevented, thus extending the life of the drive motor. .

Claims (3)

Power for transmitting the dead bolt (3), the latch bolt (5), the drive motor 40 for driving the dead bolt (3), the driving force of the drive motor 40 to the dead bolt (3) The panning device 20 for releasing the dead bolt 3 and the latch bolt 5 at the same time by rotating the delivery device 50 and the inner handle 12 and the dead bolt as the door D is closed. And an automatic locking device (30) for automatically locking (3), wherein the power transmission device (50) includes a driving bevel gear (52) installed on the motor shaft (42) of the driving motor (40), and A driven bevel gear 54 engaged with the driving bevel gear 52 and an actuating lever 56 installed on the bevel gear rotation center shaft 54a of the driven bevel gear 54 to push and move the dead bolt 3. In the digital door lock having a), The actuating lever 56 of the power transmission device 50 is assembled to rotate and axially move with respect to the driven bevel gear 54, and the driven bevel gear 54 and the actuating lever 56 are clutch means. Connected by 60, The clutch means 60 connects the driven bevel gear 54 and the actuating lever 56 so that the driving force of the drive motor 40 is transmitted from the driven bevel gear 54 to the actuating lever 56. When the automatic locking device 30 and the panic device 20 are operated at the same time, the driven bevel so that the operating force of the inner handle 12 is not transferred back from the operating lever 56 to the driven bevel gear 54. Drive motor burnout prevention device of the digital door lock, characterized in that the gear 54 and the operating lever 56 is blocked. The method of claim 1, The clutch means 60, Serrated engagement protrusions 62 formed on the bevel gear rotation center shaft 54a of the driven bevel gear 54 and the operation lever 56 of the operating lever 56 to be engaged with the coupling protrusions 62. The actuating lever 56 drives the actuating lever 56 so that the sawtooth coupling grooves 64 and the coupling protrusions 62 and the coupling grooves 64 formed in the rotational center shaft 56a can be engaged with each other. A spring 70 elastically pressurized in the direction of 54; The coupling protrusion 62 and the coupling groove 64, when the driving force of the drive motor 40 is transmitted to the driven bevel gear 54, the driven bevel gear 54 while maintaining a state of being engaged with each other. Transfers the driving force to the operating lever 56, When the operating force of the inner handle 12 is reversely transmitted to the operating lever 56, the operating force transmitted to the operating lever 56 is blocked while slipping with respect to each other. Drive motor burnout prevention device of door lock. The method of claim 2, The tension of the spring 70 is greater than the driving force of the drive motor 40, the driven bevel generated when the driving force of the drive motor 40 and the operating force of the inner handle 12 act in opposite directions to each other. Drive motor burn prevention device of the digital door lock, characterized in that configured to be less than the torsional stress (Torsional Stress) between the gear (54) and the operating lever (56).

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