KR102241983B1 - Damper type auto door closure device - Google Patents

Abstract

A damper type automatic door closure device is disclosed. According to the present invention, the damper type automatic door closure device comprises: a driving unit generating rotating power; a speed reducer unit continuously installed in the driving unit and reducing rotating speed; an output gear unit connected to an output shaft of the speed reducer unit to be rotated; a rack gear unit where a spur gear provided to a side surface is engaged with the output gear unit, linearly moved by rotation of the output gear unit, and moved to move a door; and a damper unit having an inner piston moved by the rack gear unit and changing magnetic force to control movement of the piston.

Description

Damper type auto door closure device {DAMPER TYPE AUTO DOOR CLOSURE DEVICE}

The present invention relates to a damper type auto door closer device, and more particularly, to a damper type auto door closer device capable of automatically closing and opening a door and quickly restricting movement of a door in an emergency situation. .

In general, in automobiles, when a door is loaded or unloaded through the door, the door must maintain its open state stably so that the loading and unloading or cargo operation is facilitated. However, the door hinge merely maintains the mounting state of the door and enables the door to be opened and closed, and does not play a role of maintaining an open state at a predetermined angle during the opening and closing path of the door.

The operation of closing and opening the door of the vehicle is performed manually. Recently, a device for automatically opening or closing a door by using the power of a driving motor has been invented.

A door opening/closing device for a vehicle that automatically opens and closes a door enables automatic opening and closing of the door because the rotational force by the driving motor is transmitted to the checker arm using a driving motor.

Conventionally, when performing an operation of automatically moving a door, there is a problem in that a safety accident occurs because a separate device for quickly stopping the movement of the door is not provided when there is a pedestrian or a car in the movement path of the door. Therefore, there is a need to improve this.

The background technology of the present invention is published in Korean Patent Publication No. 10-1793261 (registered on October 27, 2017, title of invention: automatic door opening and closing device for vehicles).

The present invention was created to improve the above problems, and an object of the present invention is a damper type auto door closer device capable of automatically closing and opening a door and quickly restraining the movement of the door in an emergency situation Is to provide.

A damper type auto door closer device according to the present invention includes: a drive unit that generates rotational power, a reduction unit that is connected to the driving unit and reduces the rotational speed, an output gear unit that is connected to the output shaft of the reduction unit and rotates, and is provided on the side. The spur gear meshes with the output gear and moves linearly by the rotation of the output gear, and the rack gear part that moves the door and the piston moved by the rack gear part are provided inside, and a damper part that controls the movement of the piston by changing magnetic force. It characterized in that it includes.

In addition, the present invention is characterized in that it further comprises a case portion and a case portion installed in a shape surrounding the driving portion, the reduction portion and the output gear portion and a transfer guide portion for guiding the linear movement of the rack gear portion.

In addition, the transfer guide portion is rotatably installed in the case portion and includes a guide roller that rotates while contacting a side surface of the rack gear portion, and a support member that rotatably supports the guide roller and the output gear portion and is fixed to the case portion.

In addition, the damper unit includes a base member fixed to the case unit, a housing unit connected to an upper side of the base member and provided with an operating space inside, a housing cover shielding both sides of the housing unit, and one side is connected to the rack gear unit. The side passes through the housing cover, extends to the inside of the housing, is connected to the piston provided on the inside of the housing cover, and is stored inside the housing cover, and includes a variable fluid whose viscosity changes according to the change of the magnetic force of the piston. It is done.

In addition, the piston is located on the inside of the housing cover, moves in a linear direction with the rod, and is fixed to the outside of the piston body and the piston body installed in a state spaced from the inside of the housing cover, and generates magnetic force by the supply of power. It characterized in that it comprises a coil part.

In addition, the present invention is characterized in that it further comprises a control unit for restraining the movement of the rack gear unit by controlling the operation of the driving unit and the coil unit.

In addition, the variable fluid is characterized in that it is a magnetic fluid.

In the damper type auto door closer device according to the present invention, the door is automatically closed and opened by the operation of the driving unit, and the damper unit is operated by a variable fluid whose viscosity changes due to magnetism in an emergency situation to speed the door movement. Can be restrained.

1 is a perspective view schematically showing the structure of a damper type auto door closer device according to an embodiment of the present invention.
2 is a perspective view showing a state in which the damper type auto door closer device according to an embodiment of the present invention is operated.
3 is an exploded perspective view of a case part according to an embodiment of the present invention.
4 is an exploded perspective view of a damper type auto door closer device according to an embodiment of the present invention.
5 is a perspective view showing a state in which a damper part is separated from a rack gear part according to an embodiment of the present invention.
6 is a cross-sectional view showing a state in which a variable fluid is moved through a space provided between a coil unit and a housing unit according to an embodiment of the present invention.
7 is a cross-sectional view showing a state in which the movement of the piston is stopped according to an embodiment of the present invention.
8 is a block diagram of a damper type auto door closer device according to an embodiment of the present invention.

Hereinafter, a damper type auto door closer device according to an embodiment of the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of users or operators. Therefore, definitions of these terms should be made based on the contents throughout the present specification.

1 is a perspective view schematically showing the structure of a damper type auto door closer device according to an embodiment of the present invention, and FIG. 2 is a diagram illustrating a state in which the damper type auto door closer device according to an embodiment of the present invention is operated. 1 is a perspective view, Figure 3 is an exploded perspective view of a case according to an embodiment of the present invention, Figure 4 is an exploded perspective view of a damper type auto door closer device according to an embodiment of the present invention, Figure 5 is of the present invention A perspective view showing a state in which the damper part is separated from the rack gear part according to an embodiment, and FIG. 6 is a diagram illustrating a state in which a variable fluid is moved through a space provided between a coil part and a housing part according to an embodiment of the present invention. 7 is a cross-sectional view showing a state in which movement of a piston is stopped according to an embodiment of the present invention, and FIG. 8 is a block diagram of a damper type auto door closer device according to an embodiment of the present invention. .

As shown in Figures 1 to 8, the damper type auto door closer device 1 according to an embodiment of the present invention is installed in succession to the driving unit 10 and the driving unit 10 for generating rotational power and rotates The reduction unit 20 for reducing the speed, the output gear unit 30 connected to the output shaft of the reduction unit 20 and rotated, and the spur gear 42 provided on the side are engaged with the output gear unit 30, and the output gear unit ( The rack gear unit 40 and the piston 52 moved by the rack gear unit 40 are provided on the inside and move the piston 52 by changing the magnetic force, which moves linearly by rotation of 30) and moves the door. It includes a damper unit 50 for controlling. In addition, the damper type auto door closer device 1 according to an embodiment of the present invention further includes a case unit 60, a transfer guide unit 70, and a control unit 80.

As for the driving unit 10, various types of driving devices may be used within the technical idea of generating rotational power. An electric motor is used as the driving unit 10 according to an embodiment, and a servo motor may be used if necessary.

The reduction unit 20 is installed in succession to the driving unit 10 and various types of reduction devices may be used within the technical idea of reducing the rotational speed of the driving unit 10. The reduction unit 20 according to an embodiment is a planetary gear device is used.

The output shaft of the driving unit 10 rotates the sun gear in the middle of the deceleration unit 20, and is decelerated by a planetary pinion gear and a ring gear located outside the sun gear, and is output to the output gear unit 30.

The output gear unit 30 is connected to the output shaft of the reduction unit 20 and rotates, and secondary deceleration is performed by the diameter of the gear. A driving gear 32 is connected to the output shaft of the reduction unit 20, and a driven gear 34 engaged with the driving gear 32 is rotatably installed in the case unit 60. The outer diameter of the driven gear 34 is larger than the outer diameter of the drive gear 32, and the number of teeth of the gear is also more than the drive gear 32. Accordingly, the driving gear 32 is engaged with the driven gear 34 and rotates, resulting in deceleration.

In the rack gear unit 40, the spur gear 42 provided on the side is engaged with the driven gear 34 of the output gear unit 30, and the technical idea of moving the door while moving linearly by the rotation of the output gear unit 30 It can be transformed into various shapes inside. The rack gear unit 40 according to an embodiment has a rod shape extending in a linear direction, and a spur gear 42 is provided on a side facing the driven gear 34.

The damper unit 50 is provided with a piston 52 moved by the rack gear unit 40 inside, and various types of damper devices can be used within the technical idea of controlling the movement of the piston 52 by changing the magnetic force. have. The damper part 50 according to an embodiment includes a piston 52, a base member 55, a housing part 56, a housing cover 57, a rod part 58, and a variable fluid 59.

The piston 52 is located inside the housing part 56 and moves in a linear direction. The piston 52 according to an embodiment is located on the inside of the housing cover 57 and moves in a linear direction together with the rod part 58 and is installed in a state spaced apart from the inside of the housing cover 57 ( 53) and a coil unit 54 that is fixed to the outside of the piston body 53 and generates a magnetic force by supplying power.

The piston body 53 is connected to the rod portion 58 and moves together with the rod portion 58. A groove portion for installing the coil portion 54 is provided on the outside of the piston body 53.

The coil unit 54 may be operated by a control signal from the controller 80 to adjust the strength of the magnetic force. The coil part 54 is installed in a shape surrounding the outer side of the piston body 53, and the coil part 54 and the piston body 53 are spaced apart from the inner side of the housing part 56 at a set interval.

The base member 55 has a plate shape and is fixed to the case part 60. The housing part 56 is fixed to the base member 55 extending in the horizontal direction above the case part 60.

The housing part 56 is connected to the upper side of the base member 55, and an operating space is provided inside. The housing portion 56 has a cylindrical shape extending in the horizontal direction, and is installed in a shape with both sides open. The housing cover 57 shields both sides of the housing part 56 and is fixed to both sides of the housing part 56.

One side of the rod portion 58 is connected to the rack gear portion 40, and the other side of the rod portion 58 passes through the housing cover 57 and extends inside the housing portion 56. In addition, the rod portion 58 is connected to the piston 52 provided inside the housing cover 57 to move together with the piston 52. The rod portion 58 according to an embodiment has a rod shape, passes through the housing cover 57 and extends in a horizontal direction. In addition, the other side of the rod portion 58 passing through the piston 52 passes through the housing cover 57 and protrudes to the outside of the housing cover 57.

The variable fluid 59 is stored inside the housing cover 57, and various types of variable fluid 59 can be used within the technical idea that the viscosity changes according to the change of the magnetic force of the piston 52. The variable fluid 59 according to an embodiment is characterized in that it is a magnetic fluid.

Ferrofluid is a liquid that is strongly magnetized in the presence of a magnetic field. The magnetic fluid is an MR fluid, and it is a fluid in which a surfactant is added to prevent precipitation or aggregation after stabilizing and dispersing magnetic powder in a liquid in a colloidal shape.

Various types of cases may be used within the technical idea of the case unit 60 being installed in a shape surrounding the driving unit 10, the reduction unit 20, and the output gear unit 30. The case unit 60 according to an embodiment includes a first case 62 surrounding the front surface of the driving unit 10, the reduction unit 20, and the output gear unit 30, and the driving unit 10 and the reduction unit 20 And a second case 64 that surrounds the rear surface of the output gear unit 30 and is fixed to the first case 62.

The transfer guide unit 70 is installed in the case unit 60, and various types of guide devices may be used within the technical idea of guiding the linear movement of the rack gear unit 40. The transfer guide part 70 according to an embodiment is rotatably installed in the case part 60 and is in contact with the side of the rack gear part 40 and rotates with a guide roller 72 and a guide roller 72 and an output gear part. It includes a support member 74 that supports 30 rotatably and is fixed to the case part 60.

A driven gear 34 of the output gear unit 30 is located on one side of the rack gear unit 40 in which the spur gear 42 is installed with the rack gear unit 40 interposed therebetween, and facing the driven gear 34 A guide roller 72 is located on the other side of the rack gear unit 40.

The guide roller 72 meshes with the rack gear unit 40 and rotates to guide the linear movement of the rack gear unit 40. The upper side of the guide roller 72 and the driven gear 34 is rotatably supported by a plate-shaped support member 74.

The control unit 80 controls the operation of the driving unit 10 and the coil unit 54 to restrain the movement of the rack gear unit 40. The driving unit 10 and the coil unit 54 may be wirelessly connected to the control unit 80 and, if necessary, may be connected by wire.

Hereinafter, an operating state of the damper type auto door closer device 1 according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The rotational power generated by the control unit 80 operating the driving unit 10 is transmitted to the rack gear unit 40 through the reduction unit 20 and the output gear unit 30. The rack gear portion 40 meshed with the driven gear 34 is moved in a linear direction by rotation of the driven gear 34 and performs an operation of closing or opening the door.

At this time, since the control unit 80 stops the operation of the coil unit 54, the viscosity of the magnetic fluid is prevented from increasing, so that the piston 52 can move freely. Accordingly, the rod portion 58 and the rack gear portion 40 that are moved together with the piston 52 are also freely moved.

In addition, when the movement of the door is suddenly stopped during an operation of opening or closing the door, the control unit 80 stops the operation of the driving unit 10 and operates the coil unit 54. The operation of the coil unit 54 causes the piston 52 to become magnetized, so that the viscosity of the variable fluid 59 outside the piston 52 is increased.

Therefore, when the piston 52 moves inside the housing part 56, the viscosity of the variable fluid 59 is increased, so that the movement of the piston 52 is restricted or gradually decelerates and stops. Therefore, even in an emergency situation that occurs during the opening or closing operation of the door, it is possible to prevent the occurrence of a safety accident by quickly restricting the movement of the door.

As described above, according to the present invention, the door is automatically closed and opened by the operation of the driving unit 10, and in an emergency situation, the damper unit 50 is controlled by the variable fluid 59 whose viscosity is changed by magnetism. It can be operated to quickly restrain the movement of the door.

The present invention has been described with reference to the embodiments shown in the drawings, but these are only exemplary, and those of ordinary skill in the art will understand that various modifications and other equivalent embodiments are possible therefrom. will be. Therefore, the true technical protection scope of the present invention should be determined by the following claims.

1: damper type auto door closer device
10: drive unit 20: reduction unit
30: output gear unit 32: drive gear
34: driven gear 40: rack gear
42: spur gear 50: damper part
52: piston 53: piston body
54: coil part 55: base member
56: housing part 57: housing cover
58: rod part 59: variable fluid
60: case part 62: first case
64: second case 70: transfer guide
72: guide roller 74: support member
80: control unit

Claims (7)

A driving unit generating rotational power;
A deceleration unit installed in succession to the driving unit and reducing the rotational speed;
An output gear unit connected to the output shaft of the reduction unit and rotated;
A rack gear unit in which a spur gear provided on a side surface is engaged with the output gear unit, and performs linear movement by rotation of the output gear unit and moves the door;
A damper part having a piston moved by the rack gear part inside and controlling the movement of the piston by changing a magnetic force;
A case part installed in a shape surrounding the driving part, the deceleration part, and the output gear part; And
Includes; a transfer guide installed in the case portion to guide the linear movement of the rack gear portion,
The output gear unit,
A driving gear connected to the output shaft of the reduction unit; And
Including; a driven gear that rotates in engagement with the driving gear and is rotatably installed in the case portion,
The outer diameter of the driven gear is formed larger than the outer diameter of the drive gear,
A damper-type autodoor closure device, characterized in that the number of teeth of the driven gear is greater than the number of teeth of the drive gear. delete The method of claim 1, wherein the transfer guide unit,
A guide roller rotatably installed in the case portion and rotated while contacting a side surface of the rack gear portion; And
And a support member that rotatably supports the guide roller and the output gear and is fixed to the case. The method of claim 1, wherein the damper part,
A base member fixed to the case portion;
A housing part connected to the upper side of the base member and having an operating space therein;
A housing cover shielding both sides of the housing part;
A rod portion having one side connected to the rack gear portion and the other side passing through the housing cover, extending inwardly of the housing portion, and connected to the piston provided inside the housing cover; And
And a variable fluid that is stored inside the housing cover and whose viscosity is changed according to a change in magnetic force of the piston. The method of claim 4, wherein the piston,
A piston body positioned inside the housing cover, moved in a linear direction with the rod portion, and installed in a state spaced apart from the inside of the housing cover; And
A damper type auto door closer device comprising: a coil unit fixed to the outside of the piston body and generating magnetic force by supply of power. The method of claim 5,
A damper type auto door closer device further comprising a; a control unit for controlling the operation of the driving unit and the coil unit to restrain the movement of the rack gear unit. The method of claim 4,
The damper type auto door closer device, characterized in that the variable fluid is a magnetic fluid.

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