KR101735802B1 - Lift device of tail gate for vehicle - Google Patents

Lift device of tail gate for vehicle Download PDF

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Publication number
KR101735802B1
KR101735802B1 KR1020150129231A KR20150129231A KR101735802B1 KR 101735802 B1 KR101735802 B1 KR 101735802B1 KR 1020150129231 A KR1020150129231 A KR 1020150129231A KR 20150129231 A KR20150129231 A KR 20150129231A KR 101735802 B1 KR101735802 B1 KR 101735802B1
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KR
South Korea
Prior art keywords
link
frame
actuator
door
stopper
Prior art date
Application number
KR1020150129231A
Other languages
Korean (ko)
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KR20160031971A (en
Inventor
전의식
양윤식
김학신
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(주)동양정밀
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Publication of KR20160031971A publication Critical patent/KR20160031971A/en
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Publication of KR101735802B1 publication Critical patent/KR101735802B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D33/00—Superstructures for load-carrying vehicles
    • B62D33/02—Platforms; Open load compartments
    • B62D33/023—Sideboard or tailgate structures
    • B62D33/027—Sideboard or tailgate structures movable
    • B62D33/0273—Movable tailboards for vehicles comprising non-movable sideboards, e.g. pick-up trucks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/44—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading having a loading platform thereon raising the load to the level of the load-transporting element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D33/00—Superstructures for load-carrying vehicles
    • B62D33/02—Platforms; Open load compartments
    • B62D33/023—Sideboard or tailgate structures
    • B62D33/027—Sideboard or tailgate structures movable
    • B62D33/0276—Sideboard or tailgate structures movable by vertical translation

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

Provided is a tailgate lift device for a tailgate which is provided at the rear of a vehicle to recognize a user and determine whether the tailgate is opened or closed to automatically open and close the tailgate. A lift device for a tailgate tailgate according to an embodiment of the present invention comprises: i) a first drive part which is fastened to one side of a loading space behind a vehicle, ii) a first drive part connected to the first drive part and moving up or down along a first direction Iii) a second driving part which is located inside the driving frame and extends in the first direction and moves upward or downward along the first direction, and iv) a second driving part which is pivotally connected to the second driving part, Wherein the first driving portion includes: i) an actuator reciprocating along a second direction; and ii) a first link portion connected to the actuator, the first link portion including: i) a connecting frame connected to the actuator; ii) Iii) a first link arm having both ends connected to the upper portion of the link frame and the link frame, iv) both ends are connected to the link frame and the drive frame, Includes a third link arm having a second link arm, and ⅴ) both connected to the lower end of the frame and the drive frame, the link being bent.

Description

Technical Field [0001] The present invention relates to a lifting device for a tailgate,

The present invention relates to a lift apparatus for a tailgate tailgate.

The tail gate is installed at the rear of a sports utility vehicle (SUV) vehicle or a pickup vehicle with a load box. The tailgate serves as a door that opens and closes the rear of the vehicle to allow a person or a cargo to enter and exit.

Conventionally, the user manually opens and closes the single retractable tail gate. However, a single retractable tailgate requires the user to lower the cargo and then open and load the tailgate if the user carries the cargo using both hands. In addition, when the tailgate is opened and closed, a user or an obstacle can not be recognized, so that a safety accident may occur.

The present invention provides a tailgate lift apparatus for a tailgate which is installed at the rear of a vehicle to recognize a user and determine whether the tailgate is opened or closed to automatically open and close the tailgate.

A lift device for a tailgate tailgate according to an embodiment of the present invention comprises: i) a first drive part which is fastened to one side of a loading space behind a vehicle, ii) a first drive part connected to the first drive part and moving up or down along a first direction Iii) a second driving part which is located inside the driving frame and extends in the first direction and moves upward or downward along the first direction, and iv) a second driving part which is pivotally connected to the second driving part, Wherein the first driving portion includes: i) an actuator reciprocating along a second direction; and ii) a first link portion connected to the actuator, the first link portion including: i) a connecting frame connected to the actuator; ii) Iii) a first link arm having both ends connected to the upper portion of the link frame and the link frame, iv) both ends are connected to the link frame and the drive frame, Includes a third link arm having a second link arm, and ⅴ) both connected to the lower end of the frame and the drive frame, the link being bent.

The second link arm is connected to the driving frame through a first link connection part. One end of the third link arm is connected to the driving frame through a second link connection part located below the first link connection part. And the other end is connected to the lower portion of the link frame through the third link connection portion and the first link arm is connected to the upper portion of the link frame through the fourth link portion located above the third link connection portion. The first link connecting portion, the second link connecting portion, the third link connecting portion, and the fourth link connecting portion may be parallelogram-shaped. The first link portion is a four-link link, and can move while maintaining a parallelogram. The first driving part includes a second link part positioned opposite to the first link part. The driving frame includes a first frame that is located at an upper portion and is connected to the second link arm and the third link arm, A second frame connected to the first frame in three directions, and a third frame connected to the second frame and extending in the first direction and connected to the second link portion. The door frame includes a lower stopper positioned on the second frame and protruding in a first direction, and the door portion includes a lower stopper corresponding to the upper stopper. When the door is closed, the oblique surface of the upper stopper and the oblique surfaces of the lower stopper Can be contacted.

The second driving portion may include a lift actuator and an actuator rod connected to the lift actuator, and the door portion may include a sensor portion recognizing the distance and a shaft member inserted into the through hole. The actuator rod may include a plurality of groove portions, a through hole penetrating the actuator rod, and a control switch inserted into the plurality of groove portions. The actuator rod includes an actuator stopper, and the shaft member includes a shaft member stopper that surrounds the shaft of the shaft member. When the rotation of the door portion is stopped, the actuator stopper and the shaft member stopper can contact each other. The shaft member may include a coil spring surrounding the shaft member. The sensor unit can stop the opening and closing of the door unit when the hydrate is seated in the door unit. A first control unit electrically connected to the first driving unit to drive and control the actuator, and a second control unit electrically connected to the second driving unit to drive and control the lift actuator. The second control unit may lift the lift actuator in the direction of the baggage when the baggage is sensed at a predetermined distance on the door unit.

The tailgate of the tailgate can be installed at the rear of the vehicle to automatically open and close the tailgate according to the user's approach. Therefore, it is possible to load luggage conveniently when carrying luggage with both hands. In addition, when the user approaches to load the baggage, the user can sense the baggage and increase the tailgate, thereby reducing the risk of the user's back injury. When the luggage is loaded on the tailgate, it can be sensed and the safety accident caused by the contact of the tailgate with the user can be prevented in advance.

1 is a schematic view showing the use state of the present invention.
2 is a schematic perspective view of a lift apparatus for a tailgate tailgate according to an embodiment of the present invention.
3 is a schematic cross-sectional view illustrating a door opening / closing process according to the first embodiment of the present invention.
4 is a schematic cross-sectional view illustrating a process of descending a second driving unit according to the first embodiment of the present invention.
5 is a schematic cross-sectional view illustrating a descent process of the first driving unit according to the first embodiment of the present invention.
6 to 7 are schematic views of a shaft member stopper according to a first embodiment of the present invention.
8 is a schematic view of a sensor unit according to the first embodiment of the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified, and that other specific features, regions, integers, steps, operations, elements, components, and / And the like.

Unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Commonly used predefined terms are further interpreted as having a meaning consistent with the relevant technical literature and the present disclosure, and are not to be construed as ideal or very formal meanings unless defined otherwise.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Fig. 1 schematically shows a state in which a lift device 100 of a tailgate tailgate is used for a vehicle v in an embodiment of the present invention. The state of use of the lift device 100 of the treadmill tailgate is merely to illustrate the present invention, and the use state of the lift device 100 of the treadmill tailgate can be modified differently.

As shown in Fig. 1, the lift apparatus 100 of the tailgate tailgate is installed in the vehicle v and used. The lift device 100 of the tailgate for a vehicle has an open / close structure for preventing a safety accident that may occur to a user who loads a cargo on the vehicle. Hereinafter, the structure of the lift apparatus 100 of the tailgate tail gate of FIG. 1 will be described in detail with reference to FIG.

Fig. 2 schematically shows a lift apparatus 100 for a tailgate tailgate according to a first embodiment of the present invention. The structure of the lift apparatus 100 for the tailgate tail gate of FIG. 2 is merely for illustrating the present invention, and the present invention is not limited thereto. Therefore, the structure of the lift apparatus 100 of the tailgate tailgate can be modified in other forms.

2, the lift apparatus 100 for the tailgate includes a first driving unit 10, a driving frame 20, a second driving unit 30, and a door unit 40. In addition, the lift device 100 of the tailgate for tailgate may further include other components as required.

The first driving unit 10 may include a first link unit 105a and a second link unit 105b. The first link portion 105a and the second link portion 105b may be installed on one side and the other side of the loading space of the vehicle v and may be positioned facing each other. The first link portion 105a and the second link portion 105b may be connected to the driving frame 20.

The driving frame 20 may include a first frame 201, a second frame 203, and a third frame 205. The first frame 201 may include a first link connection part 2011a and a second link connection part 2011b connected to the first link part 105a. The first frame 201 is connected to the first link portion 105a and can reciprocate vertically in the z-axis direction according to the driving of the first link portion 105a. The first frame 201 may be connected to one end of the second frame 203.

The second frame 203 is connected to the first frame 201 and extends in the x-axis direction. The second frame 203 may include an upper stopper 2031 protruding in the z-axis direction. The upper stopper 2031 may be located at the center of the second frame 203. The third frame 205 may include a fifth link connection part 2051 connected to the second link part 105b. The third frame 205 extends in the same z-axis direction as the first frame 201 and can be connected to the other end of the second frame 203. The first frame 201 and the third frame 205 may include an inner space therein.

The second driving unit 30 may include an actuator rod 305. The actuator rod 305 may include a plurality of grooves 3051 and a through hole 3053. The actuator rod 305 extends in the z-axis direction and is located in the inner space of the first frame 201 and the third frame 205 and is driven to the outside of the first frame 201 and the third frame 205 .

The door portion 40 may include a door frame 401 and a shaft member 405. The door frame 401 may include a lower stopper 4011. The lower stopper 4011 can be positioned facing the upper stopper 2031 of the second frame 203 in the z-axis direction. The shaft member 405 may be inserted into the through hole 3053 and connected to the actuator rod 305.

As shown in the enlargement circle in Fig. 2, the shaft member 405 may include a coil spring 4051. Fig. The coil spring 4051 can surround the shaft member 405 in the direction of the arrow so as to generate a force in a direction in which the door unit 40 is opened. Hereinafter, the opening and closing processes of the door unit 40 and the structure thereof will be described in detail with reference to FIG.

3 shows the opening and closing processes of the door unit 40 according to the first embodiment of the present invention in the yz plane. 3 (a) shows a state in which the door portion 40 is completely closed. When the door portion 40 is in the closed state, the upper stopper 2031 and the lower stopper 4011 contact and are fixed. 3 (a), the second control unit 301 is electrically connected to the lift actuator 303 and can control the lift actuator 303 to contract or expand through an electrical signal.

When the second control unit 301 sends a down signal to the lift actuator 303, the actuator rod 305 connected to the lift actuator 303 is lowered in accordance with the downward movement of the lift actuator 303. A gap is generated between the upper stopper 2031 and the lower stopper 4011 which are in contact with each other while the actuator rod 305 is lowered as shown in Fig. 3 (b). The interval between the upper stopper 2031 and the lower stopper 4011 can gradually release the clamping force of the door 40 and the second drive 30 and the coil spring 4051 can be released in a direction in which the door 40 is opened So that the door portion 40 can be fully opened as shown in Fig. 3 (c).

The upper stopper 2031 and the lower stopper 4011 are not necessary when the coil spring 4051 is positioned on the shaft member 405 so that a force is generated in a direction in which the door portion 40 is closed, It is also possible to open and close the unit 40. The door frame 401 may further include a stopper slider (not shown). When the user manually operates the stopper slider, the lower stopper 4011 slides left or right on the door frame 401 and does not come into contact with the upper stopper 2031. Accordingly, the upper stopper 2031 and the lower stopper 4011, the door portion 40 can be opened.

The door part 40 may include a sensor part 403. The sensor unit 403 senses the distance between the user and the door unit 40 when the user holding the smart key enters the door unit 40 in a state where the door unit 40 is closed as shown in FIG. can do. When the user senses the predetermined distance, the second control unit 301 receives the distance sensing signal of the user and can send a down signal to the lift actuator 303. [ Therefore, when the user carries the baggage using both hands, the baggage part 40 is automatically opened and closed, so that it is not necessary to lower the baggage, so that the baggage can be loaded on the vehicle more conveniently.

If the distance between the user sensed by the sensor unit 403 and the door unit 40 is less than a preset distance, the second control unit 301 controls the second control unit 301 to detect the distance sensing signal A stop signal can be sent to the lift actuator 303, and a warning sound can be generated. Therefore, it is possible to prevent a safety accident that may occur when the user comes into contact with the door portion 40.

3 (c), the sensor unit 403 can sense the distance between the door or the door unit 40 and the ground or the obstacle in a state where the door unit 40 is open. When the ground or the obstacle is sensed at a preset distance, the second control unit 301 may receive the distance sensing signal and send a down or stop signal to the lift actuator 303. Therefore, it is possible to reduce the damage of the lift apparatus 100 of the tailgate tailgate due to the ground or an obstacle. The sensor unit 403 recognizes the presence or absence of the hydrate on the door unit 40. When the hydrate is placed on the door unit 40, the opening and closing operations of the door unit 40 can be stopped.

FIG. 4 shows the vertical up-down process of the second driving unit 30 according to the first embodiment in the xz plane. As shown in Fig. 4 (a), the second driving unit 30 may include a control switch 307. Fig. For example, the control switch may be a switch using a solenoid. The control switch 307 is connected to the second control unit 301 and can move in the x-axis direction toward the plurality of grooves 3051 located in the actuator rod 305 according to the electric signal. 4 (b), when the control switch 307 is inserted into the groove portion 3051, the actuator rod 305 can be fixed to the control switch 307 and stopped. The control switch 307 can control the vertical motion of the actuator rod 305 while moving left and right according to an electric signal.

FIG. 5 shows a descending process of the first driving unit 10 according to the first embodiment of the present invention in the yz plane. As shown in Fig. 5 (a), the first driving part 10 may include an actuator 103 and a first link part 105a. The first control unit 101 may be electrically connected to the actuator 103 to control the actuator 103 to shrink or expand through the electrical signal.

The first link portion 105a may include a link frame 1051a, a first link arm 1053a, a second link arm 1055a, a third link arm 1057a, and a connection frame 1059a. The third link arm 1057a may include a bent portion. The driving frame 20 may include a first link connection part 2011a, a second link connection part 2011b, a third link connection part 2011c, and a fourth link connection part 2011d.

The link frame 1051a can be installed on the wall surface of the vehicle. The connection frame 1059a may be connected to the actuator 103. [ The second link arm 1055a may be connected to the driving frame 20 through the first link connection part 2011a. One end of the third link arm 1057a may be connected to a lower portion of the link frame 1051a through a second link connection part 2011b located below the first link connection part 2011a. The first link arm 1053a may be connected to the upper portion of the link frame 1051a through a fourth link connecting portion 2011d located above the third link connecting portion 2011c. The first link connection part 2011a, the second link connection part 2011b, the third link connection part 2011c and the fourth link connection part 2011d are four-link links forming a parallelogram shape along the dotted line in FIG. 5, And can be driven while maintaining.

5 (b), when the actuator 103 receives an inflation signal from the first control unit 101, the connection frame 1059a moves in the y-axis direction by the inflated actuator 103. As shown in Fig. The first link arm 1053a, the second link arm 1055a and the third link arm 1057a connected to the connection frame 1059a move respectively and the first drive section 10 Can lower the driving frame 20 connected to the first driving part 10. [

6 to 7 show a shaft member 405, a shaft member stopper 4053 and an actuator stopper 4055 according to the first embodiment of the present invention. 6 to 7 are the same as FIG. 2 except for the shaft member stopper 4053 and the actuator stopper 4055, and the same reference numerals are used for the same parts, and the detailed description of the same parts will be omitted for the sake of convenience.

6 to 7, the shaft member stopper 4053 may surround only the other side of the shaft member 405, and the actuator stopper 4055 may be located at the actuator rod 305. The door portion 40 can stop its rotation by the shaft member stopper 4053 surrounding the other of the shaft member 405 and the actuator stopper 4055 located in the actuator rod 305. [ When the shaft member stopper 4053 rotates together with the shaft member 405 in the direction of the arrow and the shaft member stopper 4053 and the actuator stopper 4055 contact each other, The rearward rotation can be stopped. The shape and size of the shaft member stopper 4053 and the actuator stopper 4055 can be modified to modify the rotation angle of the shaft member 405. [

Fig. 8 shows a sensor unit 403 according to the first embodiment of the present invention. The sensor unit 403 can sense the distance to the luggage to be loaded by the user. In this case, the second control unit 301 receives the distance sensing signal between the door unit 40 and the baggage, and can send an upward signal to the lift actuator 303. Accordingly, the user can reduce the use of the waist for placing the baggage on the door portion 40, thereby reducing the risk of back injury.

It will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the following claims.

10. The first driving part
20. Drive frame
30. The second driving unit
40. Door
101. First control unit
103. Actuator
105a. The first link portion
105b. The second link portion
201. First frame
203. Second frame
205. Third frame
301. Second control section
303. Lift Actuator
305. Actuator rod
307. Control switch
401. Door frame
403. Sensor unit
405. Axial member
1051a. Link frame
1053a. The first link arm
1055a. The second link arm
1057a. The third link arm
1059a. Connection frame
2011a. The first link connecting portion
2011b. The second link connecting portion
2011c. The third link connecting portion
2011d. The fourth link connecting portion
2031. Upper stopper
2051. The fifth link connecting portion
3051. Groove
3053. Through-hole
4011. Lower stopper
4051. Coil Spring
4053. Actuator stopper
4055. Shaft member stopper

Claims (13)

A first driving part which is fastened to one surface of a loading space behind the vehicle,
A drive frame connected to the first drive unit and moving up or down along the first direction and including an internal space,
A second driving unit positioned in the driving frame and extending in the first direction and moving up or down along the first direction;
And a door portion
Lt; / RTI >
Wherein the first driving part includes an actuator reciprocating along a second direction and a first link part connected to the actuator,
Wherein the first link portion includes a link frame connected to the actuator, a link frame coupled to the vehicle, a first link arm having both ends connected to the link frame and the link frame, A second link arm connected to the driving frame, and a third link arm having both ends connected to a lower portion of the link frame and the drive frame,
And
Wherein the second driving portion includes a lift actuator and an actuator rod connected to the lift actuator,
A first controller electrically connected to the first actuator to drive and control the actuator, and a second controller electrically connected to the second actuator to drive and control the lift actuator,
The door unit senses the distance to the object to be loaded, and the second control unit receives a distance sensing signal between the door unit and the object, The sensor unit stops the opening and closing of the door unit when the luggage is seated in the door unit, and the sensor unit senses the distance from the ground surface Wherein the second control unit receives a distance sensing signal between the door unit and the ground and sends a stop signal to the lift actuator when the ground surface is sensed at a predetermined distance to the door unit. The method of claim 1,
Wherein the second link arm is connected to the drive frame through a first link connection portion and one end of the third link arm is connected to the drive frame through a second link connection portion located below the first link connection portion, The other end of the third link arm is connected to the lower portion of the link frame through a third link connection portion and the first link arm is connected to the upper portion of the link frame through a fourth link connection portion located above the third link connection portion, Of the lift gate of the tram line. 3. The method of claim 2,
Wherein the first link connecting portion, the second link connecting portion, the third link connecting portion, and the fourth link connecting portion are parallelograms. 4. The method of claim 3,
Wherein the first link portion is a four-link link, and moves while maintaining a parallelogram. The method of claim 1,
Wherein the first driving portion includes a second link portion facing the first link portion,
A second frame connected to the first frame in a third direction perpendicular to the first direction, and a second frame connected to the second link arm and the third link arm, And a third frame connected to the second frame and extending in the first direction and connected to the second link portion. The method of claim 5,
Wherein the driving frame includes an upper stopper positioned in the second frame and protruding in the first direction, the door portion includes a lower stopper corresponding to the upper stopper, and when the door is closed, And the oblique surfaces of the lower stopper are in contact with each other. The method of claim 1,
Wherein the actuator rod includes a plurality of grooves, a through-hole penetrating the actuator rod, and a control switch inserted into the plurality of grooves, wherein the door portion includes a lift of a wheelchair tailgate including a shaft member inserted into the through- Device. delete 8. The method of claim 7,
Wherein the actuator rod includes an actuator stopper, and the shaft member includes a shaft member stopper that surrounds the shaft member, and when the rotation of the door portion is stopped, the actuator stopper and the shaft member stopper contact each other The lift device of the tailgate. 8. The method of claim 7,
Wherein the shaft member includes a coil spring surrounding the shaft member. delete delete delete
KR1020150129231A 2014-09-12 2015-09-11 Lift device of tail gate for vehicle KR101735802B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020140120945 2014-09-12
KR20140120945 2014-09-12

Publications (2)

Publication Number Publication Date
KR20160031971A KR20160031971A (en) 2016-03-23
KR101735802B1 true KR101735802B1 (en) 2017-05-16

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Application Number Title Priority Date Filing Date
KR1020150129231A KR101735802B1 (en) 2014-09-12 2015-09-11 Lift device of tail gate for vehicle

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
US10815715B2 (en) 2018-06-28 2020-10-27 Ford Global Technologies, Llc Powered tailgate assembly and corresponding method

Families Citing this family (6)

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Publication number Priority date Publication date Assignee Title
CN107826018A (en) * 2017-10-24 2018-03-23 宁波市江北区伊人宝贸易有限公司 A kind of side plate lift lorry easing gear
KR102474610B1 (en) 2017-12-08 2022-12-06 현대자동차주식회사 Motorless Power Tailgate Lift
US11673507B2 (en) * 2020-06-29 2023-06-13 Rivian Ip Holdings, Llc Vehicle tailgate with integrated step
US11906348B2 (en) * 2021-01-26 2024-02-20 Ford Global Technologies, Llc Load-sensing closure panel
CN112776901A (en) * 2021-02-19 2021-05-11 黄志峰 Lifting type tail baffle capable of assisting in pushing goods for truck
US11975647B2 (en) * 2022-02-17 2024-05-07 Ford Global Technologies, Llc Vehicle including lift assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10815715B2 (en) 2018-06-28 2020-10-27 Ford Global Technologies, Llc Powered tailgate assembly and corresponding method

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