JP2022128632A - Baggage fastening device and flight vehicle - Google Patents

Abstract

To provide a baggage fastening device that can make handling of baggage more efficient.SOLUTION: A baggage fastening device according to one embodiment of the present invention comprises a fastening part and a lock mechanism. The fastening part takes a holding state in which baggage is held and a releasing state in which holding of the baggage is released. The fastening part starts to transfer from the holding state to the releasing state, when loads acting on the fastening part become less than a predetermined value. The lock mechanism restricts the fastening part from transferring from the holding state to the releasing state.SELECTED DRAWING: Figure 1

Description

The present invention relates to a baggage fastening device and an aircraft.

A winch control device for an aircraft has been disclosed (see, for example, Patent Literature 1), which is capable of improving the efficiency of winching operations.

JP 2019-142605 A

By the way, some hooks used when fastening cargoes are configured to release the cargoes easily in order to improve efficiency when unloading the cargoes after transportation. With such a hook, there is a problem that handling of the load becomes complicated because the load and the hook need to be supported from the time when the load is hung until the load is shifted to the state of holding the load.

In view of the above circumstances, the present invention provides a luggage fastening device capable of improving the efficiency of handling luggage.

SUMMARY OF THE INVENTION According to one aspect of the present invention, a load fastening device is provided. This luggage fastening device includes a fastening portion and a lock mechanism. The fastening portion presents a holding state for holding a load and an open state for releasing the load. The fastening portion starts transitioning from the held state to the released state when the load applied to the fastening portion becomes less than a predetermined value. The lock mechanism restricts transition from the held state to the released state of the fastening portion.

According to the above disclosure, it is possible to improve the efficiency of baggage handling.

1 is a diagram showing a configuration of a drone 100; FIG. 3 is a diagram showing the configuration of a winch mechanism 200; FIG. 2 is a perspective view showing the configuration of main unit 210. FIG. 2 is a side view showing the configuration of main unit 210. FIG. FIG. 10 is a diagram showing a state in which a load 300 is fastened to the main unit 210; 4 is a diagram showing a holding state of a hook portion 220; FIG. 4 is a diagram showing an open state of a hook portion 220; FIG. 4 is a partially enlarged view showing the configuration of a lock mechanism 260; FIG. 4 is a partially enlarged view showing the configuration of a lock mechanism 260; FIG. 4 is a partially enlarged view showing the configuration of a lock mechanism 260; FIG.

Embodiments of the present invention will be described below with reference to the drawings. Various features shown in the embodiments shown below can be combined with each other.

1. Configuration of Drone 100 FIG. 1 is a diagram showing the configuration of the drone 100 . A drone 100 will be described as an unmanned flying object in this embodiment.

The drone 100 is a body capable of vertical takeoff and landing. A drone 100 (an example of a flying object) includes an airframe 120 and a winch mechanism 200 (an example of a luggage fastening device).

A plurality of arms 130 are provided on the body 120 . In this embodiment, four arms 130 are provided. A pair of propellers 140 is provided at the tip of each arm 130 . The propeller 140 is composed of a rotor 141 and blades 142 . Each propeller 140 can be independently controlled.

The winch mechanism 200 is provided on the fuselage 120 and holds the load 300 so that the drone 100 can carry the load 300 . Details of the winch mechanism 200 will be described later.

2. Configuration of Winch Mechanism 200 FIG. 2 is a diagram showing the configuration of the winch mechanism 200 . The winch mechanism 200 includes a main body device 210 , a drum 211 and a driving device 212 .

The drum 211 includes a trunk portion 214 around which a wire rope 218 is wound, a pair of flange portions 215 formed on both sides of the trunk portion 214 , and a rotating shaft 216 .

A rotating shaft 216 of the drum 211 is rotatably supported by a bearing 213 . The driving device 212 drives the drum 211 to rotate. The driving device 212 includes a motor 217 that drives the drum 211 to rotate. The motor 217 is, for example, an electric motor operated by electricity supplied from a battery (not shown). In addition, the driving device 212 may include a gear that transmits the rotational force of the motor 217 to the drum 211 . The main unit 210 is attached to the tip of the wire rope 218 and used to hold the load 300 . The details of main unit 210 will be described later.

3. Configuration of Main Unit 210 FIG. 3 is a perspective view showing the configuration of main unit 210. As shown in FIG. FIG. 4 is a side view showing the configuration of main unit 210. As shown in FIG.

Main unit 210 includes a pair of hook portions 220 (an example of a fastening portion), a lock mechanism 260 and spiral spring 230 . A pair of hook portions 220 , lock mechanism 260 and spiral spring 230 are attached to frame 250 . A hole 251 is formed in the frame 250 so as to extend in the longitudinal direction.

Each of the pair of hook portions 220 is composed of a base portion 224 (an example of a movable portion) and an end portion 225 . One end of base 224 is attached to frame 250 . The other end of the base portion 224 is coupled to one end of the end portion 225 via the joint portion 222 . The other end of the end portion 225 is formed into a hook shape. A pair of hook portions 220 intersect each other at a hook intersection portion 221 . Further, a crossing shaft 223 extending from the hook crossing portion 221 toward the frame 250 is fitted into a hole 251 of the frame 250 and configured to be movable along the hole 251 .

The spiral spring 230 is in a state where a part thereof is wound by the winding portion 231 . The winding portion 231 is arranged on the base portion 224 side of the hook portion 220 in the frame 250 . One end of spiral spring 230 extends toward end portion 225 and is connected to hook portion 220 via connecting portion 232 . A force to return to the winding portion 231 acts on the spiral spring 230 .

Therefore, when a load such as the load 300 is not applied to the end portions 225, a force acts on the hook crossing portion 221 toward the winding portion 231 side, thereby moving the joint portion 222 and causing the pair of end portions 225 to move. It becomes an open state (open state). At this time, the cross shaft 223 moves along the hole portion 251 and supports the hook portion 220 .

On the other hand, when a load such as the cargo 300 is applied to the end portion 225 and the load is greater than the elastic force of the spiral spring 230, a force acts on the hook crossing portion 221 toward the end portion 225 side, which causes the joint to move. The portion 222 is moved, and the pair of end portions 225 are closed (holding state). At this time, the cross shaft 223 moves along the hole portion 251 and supports the hook portion 220 . In this manner, hook portion 220 exhibits a holding state in which package 300 is held and an open state in which package 300 is released.

Here, when the load 300 is removed from the end portion 225 in a state where the load 300 is held by the end portion 225 (holding state), the hook portion 220 shifts from the held state to the open state by the spiral spring 230 . do. That is, the hook portion 220 starts transitioning from the held state to the open state when the load applied to the end portion 225 becomes less than a predetermined value. Due to the action of the spiral spring 230, the load 300 can be easily hung on the end 225 of the hook portion 220, so that the convenience of transporting the load 300 can be improved.

According to this configuration, since the hook portion 220 of the main unit 210 can easily exhibit the holding state and the open state, it is possible to improve the efficiency of handling the load 300 .

4. State Transition of Main Device 210 FIG. 6A and 6B are diagrams showing the holding state of the hook portion 220. FIG. FIG. 7 is a diagram showing an open state of the hook portion 220. As shown in FIG.

The hook portion 220 is opened by the spiral spring 230 when the end portion 225 is not loaded. In this open state, when the load rope 310 of the load 300 is hung on the end 225 and the load of the load 300 is applied to the end 225, a force acts on the hook intersection 221 toward the end 225, thereby The base portion 224 is moved to move the joint portion 222, and the end portion 225 is closed to a holding state (FIG. 6). In addition, in FIG. 6, illustration of the luggage 300 is omitted.

When the load 300 lands on the ground after transportation of the load 300 is finished, the load is no longer applied to the end portion 225 , so that the spiral spring 230 exerts a force on the hook crossing portion 221 toward the base portion 224 . moves to move the joint portion 222, and the end portion 225 opens to be in an open state (FIG. 7). That is, the hook portion 220 shifts from the holding state to the open state by moving the base portion 224 . This allows the load rope 310 of the load 300 to be released from the end 225 . In this manner, the hook portion 220 exhibits a held state and an open state.

5. Configuration of Lock Mechanism 260 FIGS. 8 to 10 are partially enlarged views showing the configuration of the lock mechanism 260. FIG.

The lock mechanism 260 includes a pin 261 (an example of a locking member), a compression spring 262 (an example of a biasing member), and a flange portion 263 .

The pin 261 fits into a hole (not shown) in the frame 250 . The pin 261 is configured to be slidable with respect to the hole.

The compression spring 262 is attached to the pin 261 , one end is configured to contact the frame 250 , and the other end is configured to bias the pin 261 . The compression spring 262 is configured to bias the pin 261 in the A direction when the pin 261 moves in the B direction.

The flange portion 263 is formed at the end of the pin 261 opposite to the side to which the compression spring 262 is attached.

The action of the lock mechanism 260 will be described. Lock mechanism 260 restricts transition of hook portion 220 from the held state to the released state. A specific description will be given below. When the hook portion 220 is in the retained state (FIG. 6), the base portion 224 of the hook portion 220 is positioned away from the locking mechanism 260 (FIG. 8). In this state, the lock mechanism 260 is moved in the B direction (Fig. 9).

When the load applied to the end portion 225 of the hook portion 220 becomes less than a predetermined value, the hook portion 220 starts transitioning from the held state to the released state. At this time, the base portion 224 of the hook portion 220 moves in the direction C and contacts the lock mechanism 260 (FIG. 10). Base 224 is locked to pin 261 . The pin 261 restricts the transition of the hook portion 220 from the held state to the open state by locking the base portion 224 .

The compression spring 262 biases the pin 261 in a direction (direction A) in which the base 224 is not locked. The flange portion 263 abuts on the base portion 224 so that the pin 261 is not separated from the base portion 224 by the compression spring 262 when the pin 261 is engaged with the base portion 224 . That is, the flange portion 263 is in a state of being caught by the base portion 224 .

When a load such as the load 300 is applied to the end portion 225 of the hook portion 220, the hook portion 220 shifts to the holding state. At this time, the base portion 224 of the hook portion 220 moves in the D direction and leaves the lock mechanism 260 (FIG. 9). At this time, since the flange portion 263 is no longer in contact with the base portion 224, the pin 261 is moved in the direction A by the biasing force of the compression spring 262 (FIG. 8).

That is, when the load applied to the end portion 225 of the hook portion 220 reaches or exceeds a predetermined value, the lock mechanism 260 releases the restriction on transition of the hook portion 220 from the held state to the open state. Here, a load equal to or greater than a predetermined value indicates a load greater than the elastic force of spiral spring 230 .

More specifically, when the load applied to the end portion 225 of the hook portion 220 reaches or exceeds a predetermined value, the lock mechanism 260 moves the base portion 224 to move the flange portion 263 away from the base portion 224 , and the compression spring 262 causes the pin to move. 261 is separated from the base portion 224, the restriction on transition from the held state to the open state of the hook portion 220 is lifted.

Movement of the lock mechanism 260 and movement of the hook portion 220 will be described. First, the hook portion 220 is in the open state, and the lock mechanism 260 does not limit the state transition of the hook portion 220 . In this state, the load rope 310 of the load 300 is hooked to the end 225 of the hook 220, and the hook 220 or the load 300 is pulled to apply a load to the end 225, thereby bringing the hook 220 into the holding state.

Thereafter, by moving the lock mechanism 260 from the state shown in FIG. 8 to the state shown in FIG. 9, the lock mechanism 260 restricts the transition of the hook portion 220 to the open state.

Then, when the drone 100 takes off, the load of the cargo 300 is applied to the end portion 225 of the hook portion 220 . At this time, the positional relationship between the lock mechanism 260 and the base 224 of the hook portion 220 is in the state shown in FIG. restrictions are lifted.

When the drone 100 lands, the load applied to the end portion 225 of the hook portion 220 becomes smaller than the elastic force of the spiral spring 230, and the hook portion 220 shifts to the open state. The load rope 310 is then removed from the end 225 .

According to this configuration, if the load 300 is hooked on the hook portion 220, there is no need to support the load 300 or the main unit 210, so that it is possible to improve the efficiency of handling the load. Further, since no electronic parts are used in the lock mechanism 260, the durability of the lock mechanism 260 can be ensured.

6. Other Embodiments Although the embodiment of the present invention has been described above, the present invention is not limited to this and can be modified as appropriate without departing from the technical idea of the invention.

Although an unmanned flying object is mentioned as an example of the flying object, it is not limited to this, and may be a manned flying object.

Although the winch mechanism 200 is mentioned as an example of the load fastening device, it is not limited to this, and may be, for example, a hoist mechanism.

It may be provided in each aspect described below.
In the cargo fastening device, the locking mechanism cancels the restriction when the load applied to the fastening portion reaches a predetermined value or more.
In the cargo fastening device, the fastening portion includes a movable portion, the locking mechanism includes a locking member, and the fastening portion transitions from the held state to the released state by moving the movable portion. and the locking member restricts transition of the fastening portion from the held state to the released state by locking the movable portion.
In the cargo fastening device, the lock mechanism includes a biasing member and a flange portion, the biasing member biases the locking member in a direction in which the movable portion is not locked, and the flange portion 2. A luggage fastening device, wherein in a state where said locking member locks said movable part, said biasing member abuts against said movable part so that said locking member is not separated from said movable part.
In the cargo fastening device, when the load applied to the fastening portion reaches a predetermined value or more, the lock mechanism moves the movable portion so that the flange portion is separated from the movable portion, and furthermore, the urging member causes the locking mechanism to move. A baggage fastening device, wherein the restriction is released by the stopping member being separated from the movable part.
The cargo fastening device, wherein the cargo fastening device is a winch mechanism.
An aircraft comprising the cargo fastening device.
The flying object, wherein the flying object is an unmanned flying object.
Of course, this is not the only case.

100 : Drone 120 : Airframe 130 : Arm 140 : Propeller 141 : Rotor 142 : Blade 200 : Winch mechanism 210 : Main unit 211 : Drum 212 : Driving device 213 : Bearing 214 : Body 215 : Flange 216 : Rotating shaft 217 : Motor 218 : Wire rope 220 : Hook portion 221 : Hook intersection portion 222 : Joint portion 223 : Cross shaft 224 : Base portion 225 : End portion 230 : Spring 231 : Winding portion 232 : Connection portion 250 : Frame 251 : Hole portion 260 : Lock mechanism 261 : Pin 262 : Compression spring 263 : Flange 300 : Cargo 310 : Cargo rope

Claims (8)

A load fastening device,
comprising a fastening portion and a locking mechanism,
The fastening portion exhibits a holding state for holding a load and an open state for releasing the load,
When the load applied to the fastening portion becomes less than a predetermined value, the fastening portion starts transitioning from the holding state to the opening state,
The locking mechanism restricts transition of the fastening portion from the held state to the released state.
Luggage fastening device. A load fastening device according to claim 1, wherein
The lock mechanism cancels the restriction when the load applied to the fastening portion reaches a predetermined value or more.
Luggage fastening device. In the cargo fastening device according to claim 1 or claim 2,
The fastening portion includes a movable portion,
The locking mechanism includes a locking member,
the fastening portion transitions from the held state to the released state by the movement of the movable portion;
The locking member limits the transition of the fastening portion from the held state to the open state by locking the movable portion.
Luggage fastening device. A load fastening device according to claim 3,
The locking mechanism includes a biasing member and a flange,
the biasing member biases the locking member in a direction in which the movable portion is not locked;
The flange portion contacts the movable portion so that the locking member is not separated from the movable portion by the biasing member in a state where the locking member locks the movable portion.
Luggage fastening device. A load fastening device according to claim 4,
In the lock mechanism, when the load applied to the fastening portion reaches a predetermined value or more, the movable portion moves and the flange portion separates from the movable portion. lifting said restriction by leaving the
Luggage fastening device. In the cargo fastening device according to any one of claims 1 to 5,
The cargo fastening device is a winch mechanism,
Luggage fastening device. an aircraft,
A luggage fastening device according to any one of claims 1 to 6,
Airplane. In the aircraft according to claim 7,
The flying object is an unmanned flying object,
Airplane.

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