Apparatus for connecting loading part of vehicle
An embodiment apparatus includes a loading part of a vehicle, a drone unit connected with the loading part and configured to apply a driving force of the vehicle, a connecting unit positioned on a lower side of the loading part and connected with a part of an upper side of the drone unit, and a receiving unit positioned on the upper side of the drone unit and corresponding to the connecting unit.
1 . An apparatus comprising:
a loading part for a vehicle;
a drone unit configured to provide a driving force for the vehicle, wherein the drone unit and the loading part are connectable to each other;
a connecting unit, which is made of a shape memory alloy, positioned on a lower side of the loading part; and
a receiving unit positioned on an upper side of the drone unit and corresponding to the connecting unit,
wherein the connecting unit comprises:
an upper side pipe positioned on a lower surface of the loading part; and
a guide part protruding from a lower surface of the upper side pipe and insertable into the receiving unit, and
wherein the guide part comprises:
an extension part extending along the lower surface of the upper side pipe;
an engagement part vertically connected to the extension part and positionable in a slot part of the receiving unit; and
a variable part surrounding outer surfaces of the extension part and the engagement part and configured to change in volume at a predetermined position depending on a temperature.
2 . The apparatus of claim 1 , wherein the receiving unit comprises
a lower side pipe positioned on a lower side of the upper side pipe in a connection state, wherein
the slot part is positioned in the lower side pipe and configured to receive the guide part.
3 . The apparatus of claim 1 , further comprising a bolt part positioned along a lengthwise direction of the engagement part and connectable with a part of the receiving unit.
4 . The apparatus of claim 3 , wherein the receiving unit further comprises a receiving bolt groove located at an inner wall surface of the receiving unit and configured to receive at least a front end of the bolt part.
5 . The apparatus of claim 4 ,
wherein the bolt part is configured to pass through a connecting bolt groove formed in the guide part in the lengthwise direction at a position where the engagement part and the extension part face each other, and
wherein the bolt part is configured to move in the lengthwise direction along a thread formed inside the receiving bolt groove of the receiving unit.
6 . The apparatus of claim 1 , wherein a cross-section of the variable part in a lengthwise direction is configured to increase from a first end in contact with the receiving unit to a second end.
7 . The apparatus of claim 1 , wherein the variable part has a tapered shape along a lengthwise direction of the guide part.
8 . The apparatus of claim 1 , further comprising an uneven part positioned inside the slot part facing the variable part.
9 . The apparatus of claim 1 , wherein, at a set or higher temperature, a volume of the variable part surrounding the outer surface of the engagement part is contracted, so that a connection between the connecting unit and the receiving unit is released.
10 . The apparatus of claim 1 , wherein, at a set or higher temperature, a volume of the variable part surrounding the outer surface of the extension part is expanded, so that a connection between the connecting unit and the receiving unit is released.
11 . An apparatus comprising:
a loading part for a vehicle;
a drone unit configured to provide a driving force for the vehicle, wherein the drone unit and the loading part are connectable to each other;
a connecting unit positioned on a lower side of the loading part; and
a receiving unit positioned on an upper side of the drone unit and corresponding to the connecting unit,
wherein the connecting unit comprises an upper side pipe positioned on a lower surface of the loading part and a guide part protruding from a lower surface of the upper side pipe and insertable into the receiving unit,
wherein the receiving unit comprises a lower side pipe positionable on a lower side of the upper side pipe and a slot part positionable in the lower side pipe and configured to receive the guide part, and
wherein the guide part comprises an extension part extending along the lower surface of the upper side pipe, an engagement part vertically connected to the extension part and positionable in the slot part, and a variable part surrounding outer surfaces of the extension part and the engagement part and configured to change in volume at a predetermined position depending on a temperature.
12 . The apparatus of claim 11 , further comprising a bolt part positionable along a lengthwise direction of the engagement part and connectable with a part of the receiving unit.
13 . The apparatus of claim 11 , wherein a cross-section of the variable part in a lengthwise direction is configured to increase from a first end in contact with the receiving unit to a second end.
14 . The apparatus of claim 11 , wherein the variable part has a tapered shape along a lengthwise direction of the guide part.
15 . The apparatus of claim 11 , further comprising an uneven part positioned inside the slot part facing the variable part.
16 . The apparatus of claim 11 , wherein a volume of the variable part surrounding the outer surface of the engagement part is able to contract at a set or higher temperature so that a connection between the connecting unit and the receiving unit is released.
17 . The apparatus of claim 11 , wherein, at a set or higher temperature, a volume of the variable part surrounding the outer surface of the extension part is expanded so that a connection between the connecting unit and the receiving unit is released.
18 . The apparatus of claim 11 , wherein, at a set or higher temperature, a volume of the variable part surrounding the engagement part is configured to decrease and a volume of the variable part surrounding the extension part is configured to increase.
19 . The apparatus of claim 11 , wherein a volume change of the variable part surrounding the extension part and a volume change of the variable part surrounding the engagement part are equal to each other, and a total volume of the variable part remains constant in response to a temperature change.
20 . The apparatus of claim 11 , wherein the variable part is configured to maintain a constant total volume while varying in volume at different positions, and wherein the variable part is configured to enable lengthwise movement between the connecting unit and the receiving unit.