KR100275404B1 - An actuator for locking door - Google Patents

Abstract

PURPOSE: A door-lock actuator is provided to reduce a hand operational power of a lock nob in locking/unlocking to uniformly be used, and secure an endurance life, and prevent a noise reducing of a rotary plate and a transformation of a locker by usually restoring a location of a master gear to a former location by a second torsion spring and by reducing an operational noise reducing and a die damage of an actuator. CONSTITUTION: An upper/lower part housing(110,120) forms a predetermined receiving space by coupling each other. A motor(121) is received in the receiving space and comprises a motor gear(121a) and generates an electric power. A master gear(123) is prepared on the upper/lower part housing(110,120) so as to rotate and is connected with the motor gear(121a) to be driven rotary. A transmitting gear(122) comprises a large-diameter gear(122b) connected with the motor gear(121a) and a small-diameter gear(122a) connected with the master gear(123). A clutch gear(124) is installed with the master gear(123) to an east-axis and is prepared so as to rotate. A sector gear(125) is rotated together by being in gear with the clutch gear(124). A connecting plate is rotated together by being coupled one end to an axis(125a) of the sector gear(125) and is connected a connecting load to another end. An interlocking unit performs a rotation of the master gear(123) and the clutch gear(124). A restoring unit restores the master gear(123) to former location when a power of the motor(121) is off.

Description

A actuator for locking of door

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock actuator, and more particularly to a door lock actuator whose structure is improved to operate a door lock knob with reduced manual force.

For example, a vehicle locking device includes a locking pin fixed to a vehicle body, a locker rotatably provided on a door to lock / unlock the locking pin, and an actuator and locker for locking / unlocking by rotating the locker by motor driving. It consists of a lock knob for manual operation.

Such a conventional locking device is shown schematically in FIGS. The locking device is fixed to a base 20 fixed to a door (not shown), and the locker housing 10 is rotatably received by the locker (not shown), and is rotatably supported by the base 20. An actuator 40 having a rotating plate 30 to which the knob 31 is connected, a predetermined rotating driving element fixed to the base 20, and rotating the connecting plate 51, and rotating to the connecting plate 51. The connecting rod 50 for connecting the plate 30, and one end is connected to the rotary plate 30 and interlocked, the other end between the first position and the second position deviating from the first position to match the release lever 11 It consists of a working rod 60 that is moved in.

The release lever 11 interlocks the locker to release the locked state of the locker. In addition, the reference numeral 63 is a door open arm that is interlocked when the occupant rotates the door handle (not shown), the operation link 62 and the operation arm 61 together with the rotation of the door open arm 63 together. Rotating the operating rod 61 is rotated.

For example, when the lock rod 31 is operated downward as shown in Fig. 1 (a), when the operating rod 60 is located at the second position away from the release lever 11, the door open arm 63 Even if the operating rod 60 is rotated by rotating), the release lever 11 is not interlocked. Therefore, even if the occupant tries to open the door by the door handle, the door cannot be opened. That is, the locked state of the door is maintained.

Also, as shown in Fig. 1 (b), when the operating rod 60 is positioned at the first position coinciding with the release lever 11 by pulling the lock knob 31 upward, the door open arm When rotating the 63, the operating rod 60 is rotated to interlock the release lever 11 to release the locking state of the locker.

On the other hand, the actuator 40 for automatically rotating the rotation plate 30 for moving the operation rod 60 to the first position or the second position has the following structure.

In the housing 41, a motor 42 having a drive gear 42a is provided, and a master gear 45 having a pushing projection 45a formed on the bottom thereof is engaged with the drive gear 42a. The clutch gear 43 in which the stopper 43a was formed is provided coaxially with the master gear 45, and the sector gear 46 is meshed with the clutch gear 43. As shown in FIG.

The upper surface of the clutch gear 43 is provided with a torsion spring 44 which prevents rotation in one direction by the stopper 43a and allows the pushing protrusion 45a to come into contact with the end of the sector gear 46. The connecting plate 51 and the connecting rod 50 are connected to the rotary shaft 46a as shown in FIGS. 1 and 3.

The operation of such an actuator 40 is as follows. First, referring to Fig. 4 (a) showing the locked state of the door, this means that when the master gear 45 is rotated counterclockwise by the driving of the motor 42, the torsion spring 44 by the pushing protrusion 45a The clutch gear 43 rotates together through). At this time, the sector gear 46 is rotated in the clockwise direction to move the connecting rod 50 downward. Accordingly, the rotating plate 30 is rotated counterclockwise to move the operation rod 60 to the second position.

On the other hand, when the master gear 45 continues to rotate counterclockwise with rotational inertia while the sector gear 46 is in contact with the damper 47 as shown in Fig. 4A, the torsion spring 44 Then, the compressed torsion spring 44 is restored as shown in FIG. 4 (b), thereby rotating the master gear 45 clockwise. At this time, the clutch gear 43 is stopped.

In this locked state, when the occupant manually pulls the lock knob 31 to move the connecting rod 50 upward, the operating rod 60 moves to the first position as shown in FIG. The locking state is released. At this time, as shown in Fig. 4C, the sector gear 46 is rotated counterclockwise and the clutch gear 43 is rotated clockwise. At this time, the clutch gear 43 is released from the resistance by the master gear 45 and the motor gear 42a. That is, the torsion spring 44 rotates without resistance by the stopper 43a of the clutch gear 43 to the pushing projection 45a of the master gear 45 rotated by the restoring force of the torsion spring 44. It becomes possible.

In this state of manually releasing the locking, when the lock knob 31 is pulled upward, as shown in Fig. 4 (d), the sector gear 46 is rotated clockwise and at the same time the clutch gear 43 is half Rotate clockwise. At this time, the torsion spring 44 is movable without resistance between the pushing projection (45a) and the stopper (43a).

Therefore, when operating the lock knob 31 manually, the actuation force can be reduced.

However, the conventional door lock actuator as described above has the following problems.

First, a difference occurs in the driving force of the motor according to the voltage difference applied to the motor 42, and accordingly a difference occurs in the compression force for compressing the torsion spring 44, the difference in the rebound rotation angle of the master gear 45 Is generated. Therefore, the distribution of manual operating force during manual operation becomes uneven according to the position of the pushing protrusion 45a moved by the repulsive force of the torsion spring. That is, in a certain section, the clutch gear 43 rotates without resistance, and then the master gear 45 and the motor gear 42a must be rotated together from the point where the torsion spring 44 contacts the pushing protrusion 45a. Power is required. Accordingly, the user who uses it lowers the reliability of the product.

Second, when the rotation angle of the connecting plate 51 is larger than the rotation angle of the rotation plate 30, the rotation plate 30 is stopped by the stopper of the base 20 before the sector gear 46 contacts the damper 47. 21) forcibly stopped. Therefore, the effect on the shock absorbing and noise reduction, which is the original purpose of the damper 47, is eliminated, and the teeth of the sector gear 46 and the clutch gear 43 are subjected to repeated impact force, thereby greatly causing tooth breakage and noise. In addition, in the rocker, since the impact force over the operating angle is repeatedly applied to the rotating plate 30, the noise increases and the entire rocker is deformed.

The present invention has been made to solve the above problems, has the following object.

First, there is provided a door lock actuator that requires a constant manual operating force of the lock knob during locking / unlocking despite the voltage difference applied to the motor.

Second, it is to provide a door lock actuator which greatly reduces noise and tooth damage during operation.

Third, the present invention provides a door lock actuator in which noise and deformation generated in the rotation plate and the stopper of the rotation plate are greatly reduced.

Figure 1 (a) is a schematic diagram of a locking device showing a door lock (state),

Figure 1 (b) is a schematic view of the locking device showing the door unlock (unlock) state,

Figure 2 is a perspective view of the main portion of Figure 1,

3 is a perspective view showing a conventional actuator,

4 (a) to (d) is an operation of the conventional actuator shown in FIG.

5 is an exploded perspective view of the actuator of the present invention;

6 (a) to 6 (d) are operation diagrams of the actuator of the present invention.

* Explanation of symbols for main parts of the drawings

100 ... actuator 110 ... top housing

111 ... support protrusion 112 ... main stopper

113 2nd Torsion Spring 120 Lower Housing

121 Motor 122 Drive Gear

123 Master Gear 123a ...

124 ... Clutch Gear 124a ...

125 Sector Gear

The present invention to achieve the above object is rotatably installed on the base and the rotating plate is connected to the lock knob at one end, and is connected to the other end of the rotating plate is moved to the first position or the second position while locking or unlocking the door A door having an operating rod for maintaining the state, a first torsion spring for connecting the rotating plate and the base to stably maintain the first position or the second position of the operating rod, and a connecting rod connected to one side of the rotating plate. In the lock actuator,

Upper and lower housings are coupled to each other to form a predetermined storage space;

A motor housed in the storage space and having a motor gear to generate power;

A master gear rotatably provided in the upper and lower housings and connected to the motor gear to be driven in rotation;

A clutch gear installed coaxially with the master gear and rotatably provided;

A sector gear which meshes with the clutch gear and rotates together;

A connecting plate having one end coupled to an axis of the sector gear and being rotated together and the connecting rod connected to the other end thereof;

Interlocking means for rotating the clutch gear together with the rotation of the master gear;

And restoring means for restoring the master gear to the original position when the motor is powered off.

The interlocking means forms a pushing protrusion on the bottom surface of the master gear, and forms an interlocking protrusion on the upper surface of the clutch gear so as to be positioned on the rotation path of the pushing protrusion, thereby rotating the clutch gear while the towing protrusion contacts the interlocking protrusion. Has a structure so that

And the restoring means is formed in the upper housing of the support projections, each end of the second torsion spring elastically biased at its both ends, the pull projections are coupled between each end of the second torsion spring on the upper surface of the master gear By forming a, the second torsion spring is rotated by the traction projection when the master gear is rotated and has a structure such that the master gear is returned to its original position by the restoring force of the torsion spring when the motor is stopped.

In addition, at least one sub stopper is formed at a predetermined position on the upper surface of the master gear, and a main stopper is formed in the upper housing so as to be positioned at a rotation path of the sub stopper, so that the first torsion spring slightly passes the restoration threshold position. Preferably, the sub stopper is further provided with a stop means in which the sub stopper is in contact with the main stopper to stop the master gear in one position (the position before the rotating plate is stopped).

According to the above aspect of the present invention, the actuator of the present invention takes the manual operation force of the lock knob uniformly during locking / unlocking despite the voltage difference applied to the motor, and also provides the stop means to operate the torsion spring. This greatly reduces the durability of the spring, and greatly reduces noise and tooth damage when the actuator is operated. It also prevents noise reduction and deformation of the locker, allowing users to trust the product.

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

The door lock actuator of the present invention is employed in the locking device of an automobile as described above. This locking device is a locking pin (not shown) fixed to the vehicle body as usual, a locker rotatably provided on the door to lock / unlock the locking pin, and the locker is rotated by motor driving to lock / unlock. And a lock knob 31 for manually operating the actuator 100 and the locker.

On the other hand, as shown in Figures 1 to 2, the base 20 is provided with a rotatable plate 30 rotatably connected to one end of the lock knob 31, the other end of the rotary plate 30 The operating rod 60 is connected to move to the first position or the second position to keep the door in the unlocked or locked state, and rotates to maintain the first position or the second position of the operating rod 60 stably. The plate 30 is connected to the base 20 and the first torsion spring 70. And one side of the rotating plate 30 is connected to the connecting rod 50 is connected to the actuator 100.

Since the configuration and operation of the locking device is as described above, a detailed description thereof will be omitted.

Meanwhile, referring to FIG. 5, the door lock actuators 100 of the present invention are coupled to each other to form a predetermined storage space, and the upper and lower housings 110 and 120, and the motor gear 121a to be stored in the storage space. And a motor 121 generating power and rotatably provided in the upper and lower housings 110 and 120 and connected to the motor gear 121a to rotate and drive the master gear 123 and the motor gear 121a. And a transmission gear 122 having a large-diameter gear 122b connected to the master gear 123 and a small-diameter gear 122a connected to the master gear 123, and a clutch gear 124 rotatably provided coaxially with the master gear 123. ), A sector gear 125 that is engaged with the clutch gear 124 and rotates together, and one end thereof is coupled to the shaft 125a of the sector gear 125 to be rotated together, and a connecting rod 50 is connected to the other end thereof. The coupling plate 51 and the interlocking means for rotating the clutch gear 124 together with the rotation of the master gear 123, Restoring means for restoring the master gear 123 to the original position when the rotor 121 is powered off.

The interlocking means forms a pushing protrusion 123b on the bottom of the master gear 123, and forms an interlocking protrusion 124a on the upper surface of the clutch gear 124 so as to be positioned on the rotation path of the pushing protrusion 123b. The pushing protrusion 123b is in contact with the interlocking protrusion 124a to rotate the clutch gear 124.

In addition, the restoring means forms support protrusions 111 at each end of the second torsion spring 113 that are elastically biased on the upper housing 110, and the second earth on the upper surface of the master gear 123. After forming the tow protrusion 123a coupled between each end of the ocean spring 113, the second torsion spring 113 is rotated by the tow protrusion 123a when the master gear 123 is rotated. When the motor 121 is stopped, the master gear 123 is in the original position by the restoring force of the second torsion spring 113.

Meanwhile, first and second sub-stoppers 123c and 123d are formed at predetermined positions on the upper surface of the master gear 123, and the upper housings are located in the rotation paths of the first and second sub-stoppers 123c and 123d. The main stopper 112 is formed at 110. At this time, the position of the first and second sub-stoppers 123c and 123d is a restoration threshold of the first torsion spring 70 when the first and second sub-stoppers 123c and 123d are in contact with the main stopper 112. It is preferable to make the position slightly passed through the position.

The actuator 100 according to the present invention as described above is operated as follows.

1 (b) and 6 (a), in the unlocked state of the door, when the motor 121 is driven, the master gear 123 is rotated clockwise. At this time, the towing protrusion 123a of the master gear 123 is rotated while pulling one end of the second torsion spring 113, and the other end of the second torsion spring 113 is supported by the support protrusion 111. At the same time, the sector gear 125 is rotated counterclockwise to move the connecting rod 50 downward. At this time, the rotating plate 30 is rotated counterclockwise, the operation rod 60 is moved from the first position (locking release position) to the second position (locking position).

As shown in FIG. 6 (b), when the second sub-stopper 123d contacts the main stopper 112 of the upper housing 110 while the master gear 123 continues to rotate, the first torque spring 70 is in the position passing the restoration threshold position. At this time, the rotation of the master gear 123 is stopped by the main stopper 112, but the sector gear by the inertia force of the clutch gear 124 rotated in conjunction with the master gear 123 and the restoring force of the first torsion spring 70. 125 continues to rotate counterclockwise to rotate to the position where the rotating plate 30 is stopped or to the contact with the damper 140, the master gear 123 is the restoring force of the second torsion spring 113 It is rotated counterclockwise to its initial position.

At this time, the clutch gear 124 is not interlocked with the master gear 123 rotated by the restoring force of the second torsion spring 113. Accordingly, the clutch gear 124 maintains the rotated position as shown in Fig. 6C. In this state, as shown in FIG. 1A, the operating rod 60 is moved to a second position where the operating rod 60 does not interfere with the release lever 11.

On the other hand, in the locked state as shown in Fig. 6 (c), when the user manually pulls the lock knob 31 upward as shown in Fig. 1 (b), the locking is released, in this case the actuator In 100, the sector gear 125 is rotated clockwise and at the same time the clutch gear 124 is rotated counterclockwise. At this time, the interlocking protrusion 124a of the clutch gear 124 does not interfere with the pushing protrusion 123b of the master gear 123.

In addition, the clutch gear 124 is rotated without interference with the master gear 123 even when the locking knob 31 is operated by the locking knob 31 in the manually released state as described above.

Therefore, by manually operating the lock knob 31, the actuation force can be reduced when the door is locked / unlocked.

On the other hand, the door lock actuator of the present invention is not limited to the above embodiment and can be manufactured / implemented by adding a number of modifications without departing from the spirit and scope of the present application.

The present invention as described above has the following advantages.

First, despite the difference in driving force according to the voltage difference applied to the motor, the master gear is always restored to its original position by the second torsion spring. Therefore, the manual actuation force of the lock knob is reduced and uniformly applied during locking / unlocking.

Second, by the main stopper of the upper housing and the sub stopper of the master gear, the sector gear passing the critical position of the first torsion spring is rotated only by the inertia force of the clutch gear and the restoring force of the first torsion spring. Durable life can be secured by greatly reducing reduction and tooth damage.

Third, the rotational plate that occurs during locking / unlocking of the locker is because the sector gear where the first torque spring passes the critical position has only the inertia force of the clutch gear and the restoring force of the first torque spring applied to the rotation plate of the locker. Noise reduction and deformation of the locker are prevented.

Claims (3)

A rotatable plate rotatably installed at the base and having a lock knob connected to one end thereof, and an actuating rod connected to the other end of the rotatable plate and moved to a first position or a second position while maintaining the door in a locked or unlocked state, In the door lock actuator having a first torsion spring connecting the rotating plate and the base so as to maintain the first position or the second position of the operation rod and the connecting rod connected to one side of the rotating plate, Upper and lower housings are coupled to each other to form a predetermined storage space; A motor housed in the storage space and having a motor gear to generate power; A master gear rotatably provided in the upper and lower housings and connected to the motor gear to be driven in rotation; A clutch gear installed coaxially with the master gear and rotatably provided; A sector gear which meshes with the clutch gear and rotates together; A connecting plate having one end coupled to an axis of the sector gear and being rotated together and the connecting rod connected to the other end thereof; A pushing protrusion is formed on the bottom of the master gear, and an interlocking protrusion is formed on the upper surface of the clutch gear so as to be positioned on the rotation path of the pushing protrusion, so that the pushing protrusion rotates the clutch gear while being in contact with the interlocking protrusion. Interlocking means; At both ends thereof, a support protrusion in which each end of the second torsion spring is elastically biased is formed in the upper housing, and on the upper surface of the master gear, a tow protrusion is coupled between each end of the second torsion spring. And a restoring means for returning the master gear to its original position by the restoring force of the torsion spring when the motor is stopped after the second torsion spring is rotationally compressed by the towing protrusion when the master gear is rotated. Actuator. According to claim 1, When the master gear is rotated when the linking rod is further provided with a stop means for stopping the rotation of the master gear at a position passing through the restoration threshold position of the first torsion spring Door lock actuator. The method of claim 2, wherein the stop means forms at least one sub stopper at a predetermined position on the upper surface of the master gear, and forms a main stopper in the upper housing so as to be located in the rotation path of the sub stopper, And the sub stopper contacts the main stopper at the restoration threshold position of the first torsion spring to stop the master gear.