KR20210051740A - Actuator for sunshade drive which can be used by manual operation - Google Patents

Abstract

The present invention relates to an actuator for driving a manually operable sunshade. The actuator for driving a manually operable sunshade is mounted on a sunshade having a shade and a housing to provide a force for withdrawing the shade out of the housing and comprises: a case fixed on the housing; a motor which is provided in the case and outputs rotating torque by power applied from the outside; a carrier installed on a side of the motor, wherein a portion thereof is extended out of the case; a power transfer unit which is installed between the motor and the carrier, and guides the torque of the motor towards the carrier to allow the carrier to receive the torque of the motor to rotate; a power shutoff means which separates a power transfer path of the power transfer unit when the power supplied to the motor is shut off to manually rotate the carrier; and an electric operation maintaining unit which maintains the power transfer path of the power transfer unit while the supply of power to the motor continues. The actuator for driving a manually operable sunshade can engage and separate gears installed therein to be changed to electric operation or manual operation as needed to be operated. Also, if the supply of power is shut off, engaged gears are automatically disengaged to be automatically changed to a manual mode to be used regardless of the supply of power.

Description

Actuator for sunshade drive which can be used by manual operation}

The present invention relates mainly to a sunshade installed in a vehicle, and more particularly, to an actuator for driving a sunshade for both manual operation that can be used not only automatically but also manually when necessary.

The sunshade installed inside the windshield of the vehicle blocks direct sunlight from the sun entering the vehicle interior, thereby preventing the driver and passengers from glare.

There are various types of sunshade, for example, from a foldable structure that folds when not needed and then unfolds when necessary, to a roll-blind type with a built-in spring. In addition, in accordance with the advancement of technology and diversification of vehicle options, the conventional simple passive type is gradually developed, and a power type that includes a motor and a control unit and operates by pressing an operation switch is also being developed and distributed.

The power type sunshade described above basically includes a case, a light-shielding film accommodated in the case, and an actuator for pulling out the light-shielding film from the case.

For example, Korean Patent Publication No. 10-1927467 (actuator for driving an electric sun visor) discloses a body accommodating a light shielding film, an actuator installed at both ends of the body and winding or unwinding the light shielding film. However, the sun visor has a disadvantage in that the actuators are provided at both ends of the body, so that the total number of parts is large and noise is severe during operation.

In addition, since the gears inside the actuator always remain engaged, for example, when a motor breaks down or an electrical circuit breaks, it is impossible to adjust the position of the light shielding film. In other words, the light shielding film cannot be deployed or entered into the body.

Korean Patent Publication No. 10-1927467 (Actuator for driving electric sun visor) Registered Utility Model Publication No. 20-0145509 (Vehicle sun visor) Registered Patent Publication No. 0174042 (automatic drive system for sun visor of automobile)

The present invention has been created to solve the above problems, and can be operated by changing it to an electric or manual type if necessary, and when the supply of power is cut off, the meshing state between the gears is released by itself and the manual mode can be automatically changed to a manual mode. An object of the present invention is to provide an actuator for driving a sunshade for both operation.

The actuator for driving a sunshade for manual operation combined with a sunshade of the present invention as a means of solving the problems for achieving the above object is mounted on a sunshade having a light shielding film and a housing, and provides a force for drawing the light shielding film out of the housing, Case; A motor built in the case and outputting a rotational force by power applied from the outside; A carrier disposed spaced apart from the motor and a part thereof extending to the outside of the case; A power transmission unit installed between the motor and the carrier and inducing a rotational force of the motor to the carrier side, so that the carrier rotates by receiving the rotational force of the motor; An electric power holding unit that maintains a power transmission path of the power transmission unit while supplying power from the outside is continued; When the power applied from the outside is cut off, the power transmission path of the power transmission unit is cut off, and a power cut-off means for manually rotating the carrier is included.

In addition, the power transmission unit; A worm fixed to the drive shaft of the motor; A position variable gear unit installed on the side of the worm to enable engagement or separation with respect to the worm; And a carrier drive gear unit that meshes with the position variable gear unit and transmits a rotational force transmitted from the position variable gear unit to the carrier, and the power cut-off means; It elastically supports the position-variable gear unit in a direction away from the worm, and has an elastic pressing unit that separates the position-variable gear unit from the worm gear when power is cut off.

In addition, the position variable gear portion; A worm wheel engaged with the worm, a spur gear integral with the worm wheel and having the same rotation center as the worm wheel, meshing with the carrier driving gear, a rotation that penetrates the rotation center axis of the worm wheel and the spur gear and provides support A gear bracket including a shaft, wherein the case is rotatably supported by the position-variable gear unit, and a gear bracket capable of changing a position by an external force while being supported by the case is provided, and the elastic pressing unit; It includes a spring for applying an elastic force to the gear bracket to separate the worm wheel from the worm.

In addition, the motorized maintenance unit; And a solenoid having an elevating member operated by electric power provided from the outside, wherein the elevating member comprises; When power is supplied from the outside, the position variable gear is pressed with a force greater than the elastic support force of the elastic pressing unit so that the position variable gear unit is kept engaged with the worm, and when the power supply is cut off, the pressing force is lost and elastic pressure is applied. It causes wealth to move the variable part away from the worm.

In addition, the motorized holding unit; The gear bracket is actuated by power provided from the outside to pressurize and move the gear bracket with a force greater than the elastic force of the spring, thereby causing the worm wheel to engage with the worm.

In addition, the carrier driving gear unit; A driven gear that meshes with the spur gear of the variable position gear, a sun gear integral with the driven gear and having the same rotational center as the driven gear, a support shaft that penetrates the rotation center of the driven gear and the sun gear and provides support And a ring gear that receives the sun gear in its center and is fixed to the case, and is installed between the sun gear and the ring gear, and applies a rotational force to the carrier while revolving around the sun gear by following the rotation of the sun gear. It includes a number of planetary gears.

In addition, the carrier is; Further comprising a driven plate portion accommodated in the inside of the ring gear, wherein the driven plate portion is provided with a plurality of planetary gear shafts that are fitted to the rotation center shaft of the planetary gear to guide the rotational force of the planetary gear to the driven plate portion.

The actuator for driving a sunshade for manual operation combined with manual operation as described above is capable of engaging and separating gears installed therein, and thus can be operated by changing to an electric type or a manual type as necessary.

In addition, when the supply of power is cut off, the meshing state between the gears is released by itself and automatically changes to the manual mode, so it can be used regardless of the power supply.

In addition, the spreading and returning operation of the light shielding film is accurate, there is little interference or noise during operation, and the balance of the power of spreading and returning is maintained evenly.

In addition, by implementing the light-shielding film in a wide width, it is possible to expand the light-shielding area, and it is easy to install without causing sagging or wrinkles of the light-shielding film.

1 to 3 are views for explaining a basic configuration and operation method of a sunshade to which an actuator is applied according to an embodiment of the present invention.
4 and 5 are perspective views of the actuator shown in FIG. 1.
6 is a perspective view showing the structure of a power transmission unit inside the actuator shown in FIG. 4.
7 and 8 are views for explaining a detailed configuration and operation method of the power transmission unit shown in FIG. 6.
9 is a diagram illustrating a planetary gear device included in the power transmission unit of FIG. 7.
FIG. 10 is a cut-away perspective view for explaining the return method of the variable position gear shown in FIG. 7.

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

1 to 3 are views for explaining the basic configuration and operation method of a sunshade:10 to which an actuator:20 is applied according to an embodiment of the present invention. In a fully unfolded state, FIG. 2 is a view in the middle of the light shielding film 13 being rolled into the housing 11. 3 is a state in which the light shielding film 13 is wound. Winding refers to a state in which the light shielding film is returned to the interior of the housing 11.

In order to understand the function and operation principle of the actuator 20 according to the present embodiment, the sunshade 10 will be described first.

As shown, the sunshade:10 includes a horizontally extending housing 11, a light shielding film 13 having a predetermined width and being accommodated in the housing 11 and drawn out when necessary, and a housing 11 ) And a pair of folding arms 14 and tie rods 16 connecting the actuator 20 and the light shielding film 13 to the actuator 20 fixed to the upper central portion of the).

Each foldable arm 14 is linked to an upper arm 14a connected to an end of the housing 11 through a support pin 14b, and an upper arm 14a through a joint 14d, and a light shielding film 13 It consists of a lower arm (14e) connected to the lower bar (15) of. The joint portion 14d is bent inward when the upper arm 14a is rotated in the direction of the arrow b.

In addition, the tie rod 16 is a rod-shaped member that connects the tie rod fixing pin (23a in Fig. 4) of the actuator 20 and the upper end of the upper arm 14a. The tie rod 16 moves linearly in the direction of the arrow a or the opposite direction by the operation of the actuator 20 and rotates the upper arm 14a.

Reference numeral 22 denotes a signal transmission line. The signal transmission line applies external electric power to the motor 31 and the solenoid 27 provided in the actuator 20.

In the sunshade 10 having the above structure, the carrier bracket 23 is rotated clockwise as shown in the drawing in order to return the light shielding film 13 to the inside of the housing 11. When the carrier bracket is rotated clockwise, both tie rods 16 move in the direction of arrow a, and the upper arm 14a hanging on the support pin 14b rotates in the direction of arrow b. As the upper arm 14a rotates upward in the direction of the arrow b, the joint portion 14d is bent inward and the lower bar 15 rises in the direction of the arrow c.

When the carrier bracket 23 is rotated by a set angle, the lower bar 15 reaches the top dead center and the sunshade 10 is completely folded. In order to unfold the light shielding film 13, the above process is performed in the reverse order.

The set angle is a rotation angle of a virtual straight line connecting the tie rod fixing pin 23a. That is, when the carrier bracket 23 is rotated by 85 degrees while the light shielding film 13 is accommodated in the housing 11, the deployment of the light shielding film 13 is completed, and in this state, the carrier bracket 23 is rotated in the opposite direction. If it is rotated by 85 degrees, the light shielding film is restored.

In addition, the setting angle of the carrier bracket 23 is 85 degrees as a preferred embodiment, including the setting angle of the carrier bracket 23 of the present invention is composed of 70 to 100 degrees.

4 and 5 are perspective views separately showing the actuator 20 shown in FIG. 1.

As shown, the actuator 20 includes a case 21 that provides an inner space, and has a carrier 25 and a carrier bracket 23 on an outer side of the case 21. In addition, a solenoid 27 is installed on the opposite side of the carrier bracket 23. The solenoid 27 is opened to the inner space of the case 21 and performs a function of an electric power holding unit to be described later.

In addition, the inside of the case 21, as shown in Figure 6, the motor 31, the power transmission unit 30 and the power cut-off means are built-in, and a description thereof will be described later.

The carrier 25 is a rotational force output unit that receives the rotational force transmitted from the motor 31 and performs angular motion in the direction of the arrow e and the opposite direction. The angle of rotation in the direction of the arrow e may be 85 degrees as mentioned above. The carrier 25 rotates 85 degrees clockwise and then 85 degrees counterclockwise. The rotational force output from the carrier 25 is transmitted to the tie rod 16 through the carrier bracket 23. It is as mentioned above that the end of the tie rod 16 is linked to the tie rod fixing pin 23a.

In addition, the arrow e-direction rotation angle of 85 degrees is a preferred embodiment, including the arrow e-direction rotation angle of the present invention is composed of 70 to 100 degrees.

The carrier bracket 23 is a plate-shaped member having a predetermined thickness and is coupled to the carrier 25 through a fixing nut 24. The carrier 25 is coupled with the fixing nut 24 while passing through the central portion of the carrier bracket 23. The carrier bracket 23 can be removed by loosening the fixing nut 24 from the carrier 25.

The solenoid 27 takes the shape of a cylinder and has an elevating member 27a therein. The elevating member 27a descends or rises as power is applied to the solenoid 27. The operation of the lifting member 27a will be described later with reference to FIG. 7.

6 is a perspective view showing the structure of the power transmission unit 30 inside the actuator shown in FIG. 4, and FIGS. 7 and 8 are diagrams for explaining the detailed configuration and operation method of the power transmission unit shown in FIG. 6 . In addition, FIG. 9 is a view showing a planetary gear device included in the power transmission unit of FIG. 7, and FIG. 10 is a cut-out perspective view for explaining a return method of the position variable gear unit shown in FIG. 7.

As shown, a power transmission unit 30 and a spring 38 as a power cut-off means are provided inside the case 21.

The power transmission unit 30 serves to induce the rotational force output from the motor 31 to the carrier 25, and the power cut-off means separates the power transmission path of the power transmission unit so that the carrier can rotate manually. . In addition, the electric power holding unit maintains the power transmission path of the power transmission unit while the power supply from the motor continues.

The electric power holding unit is operated by the power transmitted from the outside to pressurize and move the gear bracket in the direction of the arrow f, thereby maintaining a state in which the worm wheel 32a meshes with the worm 31a, and the solenoid 27 plays its role. do.

The power transmission unit 30 is disposed between the motor 31 and the carrier 25, and induces the rotational force of the motor 31 toward the carrier 25 so that the carrier rotates by receiving the rotational force of the motor. , A worm 31a, a position variable gear part 32, and a carrier driving gear part.

The worm 31a is fixed to the drive shaft of the motor 31 and outputs rotation torque when the motor is operated. The worm (31a) can only rotate the shaft on the spot.

The position variable gear unit 32 includes a worm wheel 32a and a spur gear 32b that have the same rotational center axis and are integral with each other. The worm wheel 32a can be engaged with the worm 31a and receives rotational force in a state engaged with the worm 31a, and waits in a stopped state when separated from the worm 31a. The spur gear 32b is a general spur gear and is engaged with the driven gear 34a of the carrier driving gear.

In addition, a rotation shaft 32c is provided at the central shaft portion of the position variable gear unit 32. The rotating shaft 32c passes through the central axis of the position variable gear unit 32, and its upper and lower ends protrude to the upper part of the dignity wheel 32a and the lower part of the spur gear 32b.

The position variable gear unit 32 is partially accommodated and supported by the gear bracket 33 and can be raised and lowered together with the gear bracket 33. The gear bracket 33 is configured to support the position variable gear unit 32 so as to be rotatable, and includes a shaft support 33a disposed vertically, and a slider 33c connecting the ends of the shaft support 33a.

The shaft support (33a) is horizontally extended in a state coupled to the upper and lower ends of the rotary shaft (32c) and then coupled to the slider (33c). The shaft support 33a and the slider 33c are integrally formed. The slider 33c can be raised and lowered in close contact with the inner wall surface of the case 21. That is to say, it can rise in the direction of arrow g or descend in the opposite direction.

As a result, the position-variable gear unit 32 can be raised and lowered while rotating in a state interposed between the shaft supports 33a. In particular, the worm wheel 32a engages with the worm 31a in a state in which the position variable gear unit 32 is lowered, and is separated from the worm wheel 32a in an elevated state. This means that when the position variable gear unit 32 is lowered, the power transmission path of the power transmission unit 30 is configured, and when the position variable gear unit 32 is lowered, the power transmission path is cut off.

A spring groove 33b is formed in the slider 33c. The spring groove 33b accommodates the spring 38 as a space opened downward. The spring 38 is in a compressed state inside the spring groove 33b and always supports the gear bracket 33 upwardly elastically. If the force pressing the gear bracket 33 in the direction of the arrow f does not act, the gear bracket 33 moves upward by the elasticity of the spring 38.

As a result, it is the transmission holding unit that presses the gear bracket 33 with the arrow f, and the spring 38 that raises the gear bracket 33 in the direction of the arrow g is a power cutoff means for separating the power transmission path.

As described above, the solenoid 27 serves as an electric motor holding unit. The solenoid 27 takes the shape of a cylinder and opens toward the inner space of the case 21, and includes an elevating member 27a therein. The elevating member (27a) is moved up and down by the force of the magnetic force induced by the power is applied to the solenoid (27). This solenoid 27 may have a general configuration.

The elevating member 27a is positioned vertically above the rotary shaft 32c, as shown in FIG. 7. When power is supplied to the solenoid 27, the elevating member 27a descends with a force greater than the elastic force of the spring 38 and presses the gear bracket 33 down. The engagement of the worm wheel 32a with the worm 31a is maintained by the solenoid 27.

If power is not supplied to the solenoid 27, the downward pressing force applied to the elevating member 27a is removed, and the elevating member 27a is simply placed on the upper portion of the gear bracket 33. Since the pressing force of the solenoid 27 is not transmitted to the gear bracket 33, the gear bracket 33 rises by receiving the elastic force of the spring 38, and accordingly, the worm 31a and the worm wheel 32a are separated.

In this way, when power is not supplied to the solenoid 27, the worm 31a and the worm wheel 32a are separated and the power shear path is cut off. In this state, when the user rotates the carrier bracket 23 left and right, the carrier bracket 23 rotates.

The carrier driving gear unit engages with the position variable gear unit 32 and serves to transmit the rotational force transmitted from the position variable gear unit to the carrier 25.

Such a carrier-driven gear unit includes an intermediate gear 34, a ring gear 36, and a planetary gear 37.

The intermediate gear 34 is composed of a driven gear 34a and a sun gear 34b, and is supported so as to be rotatable by a support shaft 34c.

The driven gear (34a) is engaged with the spur gear (32b) of the position variable gear portion (32) and receives the rotational force from the spur gear (32b). The driven gear 34a and the spur gear 32b are simple spur gears and maintain a meshed state. In addition, the sun gear 34b is a gear having the same rotational center axis as the driven gear 34a and is integrally formed with the bottom surface of the driven gear 34a. The sun gear 34b transmits rotational force to the planetary gear 37 while being located inside the ring gear 36.

The support shaft 34c is an axis parallel to the rotation shaft 32c, and one end is supported on the case 21 itself and the other end is supported on the carrier 25.

In addition, the ring gear 36 is located under the intermediate gear 34 and has a sun gear 34b at its center.

The ring gear 36 is a gear tooth formed on an inner circumferential surface like a general ring gear, and is itself fixed to the case 21. The ring gear 36 does not rotate.

As shown in FIG. 9, the planetary gear 37 is a gear installed between the ring gear 36 and the sun gear 34b, and rotates in the direction of the arrow q when the sun gear 34b rotates in the direction of arrow p. At the same time, it moves in the r direction. That is, it revolves around the sun gear 34b. The planetary gear 37 is a final gear that transmits the rotational force transmitted from the motor 31 to the carrier 25.

Meanwhile, the carrier 25 extends outside the case 21 in a state in which a part of the carrier 25 is accommodated in the inner space of the ring gear 36. The portion of the carrier 25 accommodated in the ring gear 36 is a driven plate portion 25a. The driven plate portion 25a takes the form of a disk and has four planetary gear shafts 35.

The planetary gear shaft 35 is fitted to the rotation center shaft of each planetary gear 37 to support the rotation of the planetary gear 37, and receives the rotational force of the planetary gear rotating in the direction of the arrow r. The carrier 25 operates the tie rod 16 while receiving the rotational force transmitted to the planetary gear shaft 35 and rotating in both directions within the above-described angular range together with the carrier bracket 23.

In the above, the present invention has been described in detail through specific embodiments, but the present invention is not limited to the above embodiments, and various modifications are possible by those of ordinary skill within the scope of the technical idea of the present invention.

10: Sunshade 11: Housing 13: Shading film
14: folding arm 14a: upper arm 14b: support pin
14d: joint part 14e: lower arm 15: lower end bar
16: tie rod 20: actuator 21: case
22: signal transmission line 23: carrier bracket 23a: tie rod fixing pin
24: fixing nut 25: carrier 25a: driven plate part
27: solenoid 27a: elevating member 30: power transmission unit
31: motor 31a: worm 32: position variable gear unit
32a: worm wheel 32b: spur gear 32c: rotating shaft
33: gear bracket 33a: shaft support 33b: spring groove
33c: slider 34: intermediate gear 34a: driven gear
34b: sun gear 34c: support shaft 35: planetary gear shaft
36: ring gear 37: planetary gear 38: spring

Claims (7)

It is mounted on a sunshade having a light-shielding film and a housing, and provides a force to pull the light-shielding film out of the housing,
Case;
A motor built in the case and outputting a rotational force by power applied from the outside;
A carrier disposed spaced apart from the motor and a part thereof extending to the outside of the case;
A power transmission unit installed between the motor and the carrier and inducing a rotational force of the motor to the carrier side, so that the carrier rotates by receiving the rotational force of the motor;
An electric power holding unit that maintains a power transmission path of the power transmission unit while supplying power from the outside is continued;
When the power applied from the outside is cut off, a power transmission path of the power transmission unit is cut off, and the actuator for driving a sunshade for manual operation and including a power cutoff means for allowing the carrier to be rotated manually. The method of claim 1,
The power transmission unit;
A worm fixed to the drive shaft of the motor;
A position variable gear unit installed on the side of the worm to enable engagement or separation with respect to the worm;
And a carrier driving gear unit that meshes with the position variable gear unit and transmits the rotational force transmitted from the position variable gear unit to the carrier,
The power cut-off means;
An actuator for driving a sunshade for both manual operation and having an elastic pressing part that elastically supports the position variable gear part in a direction away from the worm and separates the position variable gear part from the worm gear when power is cut off. The method of claim 2,
The position variable gear unit;
A worm wheel engaged with the worm, a spur gear integral with the worm wheel and having the same rotational center as the worm wheel, meshing with the carrier driving gear, a rotation that penetrates the rotational center axis of the worm wheel and spur gear and provides support Including a shaft,
Inside the case, a gear bracket is provided that supports the position-variable gear unit so as to be rotatable, and is supported by the case and can change its position by an external force,
The elastic pressing part;
An actuator for driving a sunshade for manual operation and including a spring for applying an elastic force to the gear bracket to separate the worm wheel from the worm. The method of claim 2,
The electric motor holding unit;
It includes a solenoid having an elevating member operated by electric power provided from the outside,
The elevating member is;
When power is supplied from the outside, the position variable gear unit is pressed with a force greater than the elastic support force of the elastic pressing unit so that the position variable gear unit is kept engaged with the worm, and when the power supply is cut off, the pressing force is lost and elastic pressure is applied. Actuator for driving sunshade for both manual operation that makes the position variable part away from the worm. The method of claim 3,
The electric motor holding unit;
Actuator for manual operation combined sunshade driving, which is a solenoid that causes the worm wheel to engage with the worm by operating by externally provided power to pressurize and move the gear bracket with a force greater than the elastic force of the spring. The method of claim 2,
The carrier driving gear unit;
A driven gear that meshes with the spur gear of the variable position gear, a sun gear integral with the driven gear and having the same rotational center as the driven gear, a support shaft that penetrates the rotation center of the driven gear and the sun gear and provides support With the middle gear,
A ring gear accommodating the sun gear in its center and fixed to the case,
An actuator for driving a sunshade for combined manual operation comprising a plurality of planetary gears installed between the sun gear and the ring gear, and applying a rotational force to the carrier while revolving around the sun gear by following the rotation of the sun gear. The method of claim 6,
The carrier is;
Further comprising a driven plate portion accommodated in the inside of the ring gear,
In the driven plate part,
An actuator for driving a sunshade for manual operation and equipped with a plurality of planetary gear shafts that are fitted to the rotational center shaft of the planetary gear to guide the rotational force of the planetary gear to the driven plate.

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