JP2020169079A - Automobile lifting auxiliary device - Google Patents

Abstract

To provide an automobile lifting auxiliary device capable of safely and easily lifting an automobile.SOLUTION: An automobile lifting auxiliary device 1 comprises an elastic member 150 that fixes a locking part 142 to a first point χ1 of a first upper rod-like part 110 when a force for moving the automobile lifting auxiliary device 1 downward is the self-weight W of the automobile lifting auxiliary device 1, a moving part 140 being capable of moving the locking part 142 between the first point χ1 or an upper point and a second point χ2 or an upper point, the first point χ1 representing a point of an upper rod-like part 110 directly above the gravity center G of the automobile lifting auxiliary device 1, and the second point χ2 representing a point U of a lower rod-like part 120 directly above the contact point T of an automobile to be lifted or a point displaced from the point U directly above to the first point χ1 of the first upper rod-like part 110 by a length 20% or lower of a distance between the point U directly above and the first point χ1. The elastic member 150 separates the locking part 142 from the first point χ1 when the force for moving the automobile lifting auxiliary device 1 downward exceeds the self-weight W of the automobile lifting auxiliary device 1 by a prescribed amount.SELECTED DRAWING: Figure 1

Description

The present invention relates to an automobile lifting assist device used for lifting a vehicle body when moving a broken vehicle or the like.

When lifting a car body to move an accident car or a broken down car, it is common to insert a lifting device such as a jack under the car body or to lift a wire tied to wheels etc. with a crane (for example). , Patent Document 1).

Japanese Unexamined Patent Publication No. 2001-180454

However, in either case, there is a risk that the vehicle body will lose its balance and fall or fall.

An object of the present invention is to provide an automobile lifting assist device capable of lifting an automobile safely and easily.

The automobile lifting assist device of the present invention
An upper horizontal rod-shaped portion, a lower horizontal rod-shaped portion, a vertical rod-shaped portion that connects the upper horizontal rod-shaped portion and the lower horizontal rod-shaped portion, and a wire from the hoisting crane attached to the upper horizontal rod-shaped portion. An automobile lifting assist device having a moving part including a locking part to stop.
The point directly above the center of gravity of the automobile lifting assist device on the upper horizontal bar-shaped portion is defined as the first point.
A point of the upper horizontal bar-shaped portion directly above the contact point of the vehicle to be lifted by the lower horizontal bar-shaped portion, or just above the point by a length of 20% or less of the distance between the point directly above and the first point. When the point displaced from the point toward the first point is defined as the second point,
The moving portion is capable of moving the locking portion between the first point or a point above it and the second point or a point above it.
An elastic member for fixing the locking portion to the first point when the force for moving the automobile lifting assist device downward is the own weight of the automobile lifting assist device is provided.
The elastic member is characterized in that the locking portion is separated from the first point when the force for moving the automobile lifting assist device downward exceeds the weight of the automobile lifting assist device by a predetermined amount. And.

According to this feature, when the vehicle to be lifted is brought into contact with the contact point of the vehicle to be lifted in the lower horizontal bar-shaped portion and the wire is lifted by the lifting crane, the elastic member moves the vehicle lifting assist device downward. When the force exceeds the weight of the vehicle lifting assist device by a predetermined amount, the locking part is separated from the first point, and the vehicle lifting assist device rises without tilting while maintaining balance, so it is safe and easy. You can lift the vehicle to be lifted.

The automobile lifting assist device of the present invention
The moving portion is an object that moves in the upper horizontal bar-shaped portion.
The locking portion is a pulley in which the wire is extended upward and in the direction of the second point.
The end of the wire stretched in the direction of the second point is fixed to the upper horizontal bar.
The elastic member is characterized in that the moving portion is urged toward the first point.

According to this feature, when the vehicle to be lifted is brought into contact with the contact point of the vehicle to be lifted in the lower horizontal bar shape and the wire is lifted by the lifting crane, the pulley moves in the direction from the first point to the second point. However, since the vehicle lifting assist device rises without tilting while maintaining equilibrium, it is possible to safely and easily lift the vehicle to be lifted.

The automobile lifting assist device of the present invention
The moving portion is an arm that rotates around the second point.
The locking portion is a hook provided on the arm.
When the arm is rotated by 180 degrees from the upper horizontal bar-shaped portion, the locking portion is directly above the first point.
When the arm is rotated by 90 degrees from the upper horizontal bar-shaped portion, the locking portion is directly above the second point.
The elastic member is characterized in that the arm is urged in a direction in which the rotation angle increases.

According to this feature, when the lifting target vehicle is brought into contact with the lifting target vehicle contact point of the lower horizontal rod-shaped portion and the wire is lifted by the lifting crane, the arm rotates and the hook is the true point of the first point. Moving from the top to just above the second point, the vehicle lifting assist device rises without tilting while maintaining equilibrium, so that the vehicle to be lifted can be lifted safely and easily.

The automobile lifting assist device of the present invention
The elastic member is a spring.

According to this feature, the moving portion can be moved stably and slowly by the urging force of the spring.

According to the present invention, when the vehicle to be lifted is brought into contact with the contact point of the vehicle to be lifted in the lower horizontal bar-shaped portion and the wire is lifted by the lifting crane, the elastic member moves the vehicle lifting assist device downward. When the force exceeds the weight of the vehicle lifting assist device by a predetermined amount, the locking part is separated from the first point, and the vehicle lifting assist device rises without tilting while maintaining balance, so it is safe and easy. You can lift the vehicle to be lifted.

FIG. 1 is a side view of an automobile lifting assist device. (Example 1) FIG. 2 is an explanatory view of a moving portion attached to the upper horizontal bar-shaped portion of the automobile lifting assist device. (Example 1) FIG. 3 is a side view of the vehicle lifting assist device showing a state before applying the load of the vehicle to be lifted to the vehicle lifting assist device. (Example 1) FIG. 4 is a side view of the vehicle lifting assist device showing a state after the load of the vehicle to be lifted is applied to the vehicle lifting assist device. (Example 1) FIG. 5 is a side view of the vehicle lifting assist device showing a state before applying the load of the vehicle to be lifted to the vehicle lifting assist device. (Example 2) FIG. 6 is a side view of the vehicle lifting assist device showing a state after the load of the vehicle to be lifted is applied to the vehicle lifting assist device. (Example 2)

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a side view of the automobile lifting assist device 1 according to the present embodiment. The automobile lifting assist device 1 includes an upper horizontal bar-shaped portion 110, a lower horizontal bar-shaped portion 120, and a vertical rod-shaped portion 130 that connects the upper horizontal bar-shaped portion 110 and the lower horizontal bar-shaped portion 120.

The upper horizontal bar-shaped portion 110 and the lower horizontal bar-shaped portion 120 are formed to have substantially the same length, and extend in the longitudinal direction in parallel. The longitudinal direction of the vertical rod-shaped portion 130 is orthogonal to the longitudinal direction of the upper horizontal rod-shaped portion 110 and the lower horizontal rod-shaped portion 120, and both ends of the vertical rod-shaped portion 130 are the upper horizontal rod-shaped portion 110 and the lower horizontal rod-shaped portion 120, respectively. It is connected to one end.

A state in which the longitudinal direction of the upper horizontal bar-shaped portion 110 and the lower horizontal bar-shaped portion 120 is arranged horizontally, the upper horizontal bar-shaped portion 110 is arranged above the lower horizontal bar-shaped portion 120, and the longitudinal direction of the vertical rod-shaped portion 130 is arranged vertically. When the automobile lifting assist device 1 is viewed from the side, as shown in FIG. 1, the automobile lifting assist device 1 has a U-shape as a whole. In the following, the vehicle lifting assist device 1 will be described in a state of being arranged as shown in FIG. Further, in this embodiment, it is assumed that the weight of the vehicle to be lifted is so large that the weight of the vehicle lifting assist device 1 can be ignored.

The upper horizontal bar-shaped portion 110, the lower horizontal bar-shaped portion 120, and the vertical bar-shaped portion 130 are formed of a high-strength metal such as iron. A space is formed in the upper horizontal bar-shaped portion 110, and the upper horizontal bar-shaped portion 110 is formed of, for example, a square tubular iron pipe. The vertical bar-shaped portion 130 and the lower horizontal bar-shaped portion 120 do not have to have a space formed inside, and are formed of, for example, an iron pipe or an iron column.

A moving portion 140 is attached to the upper horizontal bar-shaped portion 110. Specifically, the moving portion 140 is movably arranged in the space of the upper horizontal bar-shaped portion 110. A slit (not shown) penetrating in the thickness direction is formed along the longitudinal direction on the upper side surface of the upper horizontal bar-shaped portion 110. The width of the slit is formed to be smaller than the width of the moving portion 140 so that the moving portion 140 cannot pass through. The wire r1 hanging from the lifting crane (not shown) can be inserted into the internal space of the upper horizontal bar-shaped portion 110 through the slit.

FIG. 2 is a schematic plan view of the moving portion 140 arranged in the upper horizontal bar-shaped portion 110 as viewed from above. The moving portion 140 is an object that moves in the upper horizontal bar-shaped portion 110, and is a pulley (corresponding to the “locking portion” of the claim) 142 that locks the wire r1 from the hoisting crane, and the pulley 142. It is provided with a rotating shaft 144 that rotatably supports the pulley 142 through the center of the disk, and a wheel 146 that is connected to the rotating shaft 144 and enables the pulley 142 to move in the space of the upper horizontal bar-shaped portion 110. There is.

Here, in the upper horizontal bar-shaped portion 110, the point directly above the center of gravity G of the automobile lifting auxiliary device 1 is set as the first point χ1, and the point U directly above the lifting target automobile contact point T of the lower horizontal rod-shaped portion 120. Is the second point χ2, the slit of the upper horizontal bar-shaped portion 110 is formed between the first point χ1 and the second point χ2, and the pulley 142 is between the first point χ1 and the second point χ2. It is configured to be movable with.

By providing stoppers at the positions of the first point χ1 and the second point χ2 to stop the movement of the moving portion 140, the pulley 142 is configured to be able to move only between the first point χ1 and the second point χ2. Alternatively, the space in the upper horizontal bar-shaped portion 110 may be provided only between the first point χ1 and the second point χ2, and the other portion may be filled with metal or cement.

The pulley 142 extends the wire r1 upward and in the direction of the second point χ2. One end of the wire r1 stretched upward is fixed to the hoisting crane, and the other end of the wire r1 stretched in the direction of the second point χ2 is fixed to the upper horizontal bar 110. Has been done. That is, the wire r1 inserted from the hoisting crane through the slit of the upper horizontal rod-shaped portion 110 into the space inside the upper horizontal rod-shaped portion 110 passes through the vertical rod-shaped portion 130 side and the lower portion of the outer circumference of the pulley 142. It extends horizontally to the end on the second point χ2 side of the upper horizontal rod-shaped portion 110, and is fixed to the end of the upper horizontal rod-shaped portion 110.

In this embodiment, the wire r1 is configured by connecting a wire r11 whose one end is fixed to a hoisting crane and a wire r12 whose one end is fixed to an upper horizontal bar-shaped portion 110. .. Specifically, the hook r13 is attached to the other end of the wire r11, the ring r14 is attached to the other end of the wire r12, and the ring r14 is exposed to the outside from the internal space of the upper horizontal bar-shaped portion 110. By hooking the hook r13, one wire r1 connecting from the hoisting crane to the end of the upper horizontal bar-shaped portion 110 is formed.

One end of another wire r2 is attached to the end of the moving portion 140 on the vertical bar-shaped portion 130 side. A pulley 4 is attached near the connecting portion between the upper horizontal rod-shaped portion 110 and the vertical rod-shaped portion 130, and the wire r2 extends horizontally from the end of the moving portion 140 to the vertical rod-shaped portion 130 side and passes through the pulley 4. It is stretched downward and the other end of the wire r2 is connected to one end of a spring (corresponding to the "elastic member" of the claim) 150. The other end of the spring 150 is fixed to the side surface of the vertical rod-shaped portion 130.

The spring 150 urges the moving portion 140 toward the first point χ1. By using the spring 150 as an elastic member for urging the moving portion 140 toward the first point χ1, the moving portion 140 can be moved stably and slowly. As the spring 150, a spring 150 is used in which the weight applied to the spring 150 does not extend until the weight W of the automobile lifting assist device 1 exceeds a predetermined size of, for example, about 10%. An elastic member other than the spring 150 may be used.

When the force for moving the vehicle lifting assist device 1 downward is the own weight W of the vehicle lifting assist device 1, the pulley 142 is fixed to the first point χ1 by the urging force of the spring 150 as shown in FIG. It is adjusted so that.

Further, when the force for moving the automobile lifting assist device 1 downward exceeds the own weight W of the automobile lifting assist device 1 by a predetermined size, the spring 150 is extended to separate the pulley 142 from the first point χ1. It is configured in.

When the vehicle to be lifted 3 is lifted by using the vehicle lifting assist device 1 having the above configuration, first, the hook r13 of the wire r11 suspended from the lifting crane is formed into an upper horizontal bar shape of the vehicle lifting assist device 1. The wire r12 is hooked on the ring r14 of the wire r12 fixed to the portion 110 to form one wire r1, the wire r1 is pulled up by a lifting crane, and the automobile lifting auxiliary device 1 is suspended by the wire r1.

In this state, as shown in FIG. 3, the force for moving the automobile lifting assist device 1 downward is only the own weight W of the automobile lifting assist device 1, and the pulley 142 is fixed to the first point χ1 by the spring 150. Ru.

Next, when the lifting target vehicle 3 is brought into contact with the lifting target vehicle contact point T of the lower horizontal bar-shaped portion 120 and the wire r1 is pulled up by the lifting crane, the vehicle lifting assist device 1 is moved downward as a force. In addition to the own weight W of the vehicle lifting assist device 1, the vehicle load F to be lifted works.

When the wire r1 is further pulled up by the hoisting crane, the load F of the vehicle to be lifted on the lower horizontal rod-shaped portion 120 increases, and the force (W + F) for moving the vehicle lifting assist device 1 downward increases. When the force (W + F) for moving the vehicle lifting assist device 1 downward exceeds the own weight W of the vehicle lifting assist device 3 by a predetermined amount, the spring 150 extends to separate the pulley 142 from the first point χ1. ..

When the wire r1 is further pulled up, the load F of the vehicle to be lifted becomes larger, and the pulley 142 further moves in the direction from the first point χ1 to the second point χ2 in order to maintain the balance of the forces.

As shown in FIG. 4, when the pulley 142 moves to the position of the second point χ2, the vehicle lifting assist device 1 does not tilt while maintaining equilibrium in that state, and the vehicle to be lifted 3 is moved by the lower horizontal bar-shaped portion 120. Can be lifted.

In this way, even if the auxiliary tool is not attached to the wheels or the like of the lifting target vehicle 3, the lifting target vehicle 3 is brought into contact with the lifting target vehicle contact point T of the lower horizontal bar-shaped portion 120 and is wired by the lifting crane. When r1 is raised, the pulley 142 is separated from the first point χ1 and the second is separated from the first point χ1 when the force for moving the automobile lifting assist device 1 downward exceeds the own weight W of the automobile lifting assist device 1 by a predetermined magnitude. Since the vehicle moves to the point χ2 and the vehicle lifting assist device 1 rises without tilting, the vehicle to be lifted 3 can be lifted safely and easily. Even when the vehicle lifting assist device 1 is brought into contact with the ground from the lifted state, the vehicle lifting assist device 1 can be held without tilting by lowering the wire r1 with the lifting crane. The target vehicle 3 can be safely and easily installed on the ground.

When the vehicle load F to be lifted is so large that the weight W of the vehicle lifting assist device 1 can be ignored, the pulley 142 is moved from the first point χ1 to the vehicle contact point T to be lifted due to the equilibrium of the moment of force. Since it is possible to move to a position as close as possible to the point U directly above, in this embodiment, the point U of the upper horizontal bar-shaped portion 110 located directly above the contact point T of the vehicle to be lifted is set to χ2, and the pulley 142 is It is configured to be movable between the first point χ1 and the second point χ2. On the other hand, when the lift target vehicle 3 is as light as about four times the own weight W of the vehicle lift assist device 1, the pulley 142 is limited to the point U directly above the lift target vehicle contact point T. Since it does not move to a close position (when the lift target vehicle 3 is four times the own weight W of the vehicle lift assist device 1, the distance between the point U directly above and the first point χ1 is 20%. It is possible to move from the point U directly above to the point displaced toward the first point χ1), and directly above by a length of 20% or less of the distance between the point U directly above and the first point χ1. The point displaced from the point U toward the first point χ1 may be the second point χ2.

Further, the position where the other end of the spring 150 is fixed is not limited to the side surface of the vertical rod-shaped portion 130, and may be fixed to the ground, or one end of the spring 150 is moved without providing the pulley 4 and the wire r2. It may be directly connected to the end of 140 and the other end of the spring 150 may be fixed between the first point χ of the upper horizontal rod-shaped portion 110 and the end on the vertical rod-shaped portion 130 side.

Next, Example 2 will be described. What has been described in Example 1 is used as it is. The differences from the first embodiment will be mainly described, and detailed description of common parts will be omitted.

FIG. 5 is a side view of the vehicle lifting assist device 1A showing a state before applying the load of the vehicle to be lifted 3 to the vehicle lifting assist device 1A according to the present embodiment, and FIG. 6 is a side view of the vehicle lifting assist device 1A. It is a side view of the vehicle lifting assist device 1A which shows the state after applying the load of the vehicle 3 to be lifted.

Similar to the first embodiment, the automobile lifting assist device 1A includes an upper horizontal bar-shaped portion 210 extending horizontally, a lower horizontal bar-shaped portion 220 extending below the upper horizontal bar-shaped portion 210 in parallel with the upper horizontal bar-shaped portion 210, and the lower horizontal bar-shaped portion 220. A vertical rod-shaped portion 230 extending in the vertical direction, each of which is connected to one end of an upper horizontal rod-shaped portion 210 and a lower horizontal rod-shaped portion 220 to connect the upper horizontal rod-shaped portion 210 and the lower horizontal rod-shaped portion 220. Have.

In this embodiment, it is not necessary that a space is formed inside the upper horizontal bar-shaped portion 210, and the upper horizontal bar-shaped portion 210, the lower horizontal bar-shaped portion 220, and the lower horizontal bar-shaped portion 220 are formed of, for example, iron columns.

Also in this embodiment, the moving portion 240 is attached to the upper horizontal bar-shaped portion 210. In this embodiment, the moving portion 240 is an arm that rotates about the second point χ2 as a rotation axis and has substantially the same length as the upper horizontal bar-shaped portion 210. The moving portion 240 is provided with a hook (corresponding to the “locking portion” of the claim) 242 for connecting the wire r1 from the hoisting crane.

Also in this embodiment, one end of the wire r2 is attached to the end of the moving portion 240 on the vertical bar-shaped portion 230 side. As shown in FIG. 5, when the moving portion 240 is in a state of being rotated by 180 degrees from the upper horizontal bar-shaped portion 210, the moving portion 240 is in the same position as the upper horizontal bar-shaped portion 210, and the wire r2 is the moving portion. The vertical bar-shaped portion of 240 extends downward from the end on the 230 side. The other end of the wire r2 is connected to one end of a spring (corresponding to the "elastic member" of claim) 250. The other end of the spring 250 is fixed to the side surface of the vertical rod-shaped portion 230. The spring 250 urges the moving portion 240 in the direction in which the rotation angle increases, that is, toward the vertical rod-shaped portion 230 side.

The hook 242 is configured to be movable between the upper part of the first point χ1 and the upper part of the second point χ2. Specifically, when the force for moving the automobile lifting assist device 1A downward is the own weight W of the automobile lifting assist device 1A, as shown in FIG. 5, the moving portion 240 is moved upward by the urging force of the spring 250. It is in a state of being rotated by 180 degrees from the horizontal rod-shaped portion 210, and at this time, the hook 242 is configured to be located directly above the first point χ1.

Further, the spring 250 is extended by applying the lifting target vehicle load F to the lifting target vehicle contact point T of the lower horizontal rod-shaped portion 220 of the vehicle lifting assist device 1A, and the moving portion 240 has an upper horizontal rod shape as shown in FIG. The hook 242 is configured to be directly above the second point χ2 when rotated by 90 degrees from the portion 210.

In order to lift the vehicle 3 to be lifted by using the vehicle lifting assist device 1A having the above configuration, first, the hook 242 of the moving portion 240 is connected to the wire r1 suspended from the lifting crane, and then the vehicle is lifted. The wire r1 is pulled up by the crane, and the automobile lifting assist device 1A is suspended by the wire r1.

In this state, as shown in FIG. 5, the force for moving the automobile lifting assist device 1A downward is only the own weight W of the automobile lifting assist device 1A, and the moving portion 240 rotates 180 degrees from the upper horizontal bar-shaped portion 210. It's moving. At this time, the hook 242 is directly above the first point χ1.

In this state, when the lifting target vehicle 3 is brought into contact with the lifting target vehicle contact point T of the lower horizontal bar-shaped portion 220 and the wire r1 is pulled up by the lifting crane, the force for moving the vehicle lifting assist device 1A downward. As a result, the vehicle load F to be lifted works in addition to the own weight W of the vehicle lifting assist device 1A.

When the wire r1 is further pulled up by the hoisting crane, the load F of the vehicle to be lifted on the lower horizontal rod-shaped portion 220 increases, and the force (W + F) for moving the vehicle lifting assist device 1A downward increases. When the force (W + F) for moving the automobile lifting assist device 1A downward exceeds the own weight W of the automobile lifting assist device 1A by a predetermined size, the spring 250 extends and the moving portion 240 rotates the second point χ2. It rotates in a direction away from the first point χ1 as an axis.

When the wire r1 is further pulled up, the vehicle load F to be lifted becomes larger, and in order to maintain the balance of the forces, the moving portion 240 further rotates in the direction away from the first point χ1 with the second point χ2 as the rotation axis. Then, as shown in FIG. 6, the hook 242 rotates 90 degrees from the upper horizontal bar-shaped portion 210, and the hook 242 moves to just above the second point χ2.

When the wire r1 is further pulled up, the vehicle to be lifted 3 is lifted by the lower horizontal bar-shaped portion 220 without tilting the vehicle lifting assist device 1A while maintaining equilibrium in this state.

As described above, even if no auxiliary tool is attached to the wheels or the like of the lifting target vehicle 3, the lifting target vehicle 3 is brought into contact with the lifting target vehicle contact point T of the lower horizontal bar-shaped portion 220 to carry out the lifting crane. When the wire r1 is raised, the moving portion 240 rotates when the force for moving the automobile lifting assist device 1 downward exceeds the own weight W of the automobile lifting assist device 1 by a predetermined size, and the hook 242 is released. Since the vehicle lifting assist device 1A moves from directly above the first point χ1 to directly above the second point χ2 and rises without tilting, the vehicle to be lifted 3 can be lifted safely and easily. Even when the automobile lifting assist device 1A is brought into contact with the ground from the lifted state, the automobile lifting assist device 1A can be lifted without tilting by lowering the wire r1 with the lifting crane. The target vehicle 3 can be safely and easily installed on the ground.

Since the vehicle lifting assist device according to the present invention can safely and easily lift a vehicle, not only an accident vehicle or a broken vehicle, but also a vehicle in violation of parking or in an emergency such as a natural disaster can be moved. It can be widely used when moving.

1, 1A Automobile lifting assist device 110, 210 Upper horizontal bar-shaped part 120, 220 Lower horizontal bar-shaped part 130, 230 Vertical bar-shaped part 140, 240 Moving part 142 Pulley 144 Rotating shaft 146 Wheel 150, 250 Elastic member 242 Hook 3 Lifting Target vehicle 4 Pulley χ1 1st point χ2 2nd point W Own weight of vehicle lifting assist device F Lifting target vehicle load T Lifting target vehicle contact point U Point directly above the lifting target vehicle contact point r1, r2 Wire

Claims (4)

An upper horizontal rod-shaped portion, a lower horizontal rod-shaped portion, a vertical rod-shaped portion that connects the upper horizontal rod-shaped portion and the lower horizontal rod-shaped portion, and a wire from the hoisting crane attached to the upper horizontal rod-shaped portion. An automobile lifting assist device having a moving part including a locking part to stop.
The point directly above the center of gravity of the automobile lifting assist device on the upper horizontal bar-shaped portion is defined as the first point.
A point of the upper horizontal bar-shaped portion directly above the contact point of the vehicle to be lifted by the lower horizontal bar-shaped portion, or just above the point by a length of 20% or less of the distance between the point directly above and the first point. When the point displaced from the point toward the first point is defined as the second point,
The moving portion is capable of moving the locking portion between the first point or a point above it and the second point or a point above it.
An elastic member for fixing the locking portion to the first point when the force for moving the automobile lifting assist device downward is the own weight of the automobile lifting assist device is provided.
The elastic member is characterized in that the locking portion is separated from the first point when the force for moving the automobile lifting assist device downward exceeds the weight of the automobile lifting assist device by a predetermined size. An automobile lifting assist device. The moving portion is an object that moves in the upper horizontal bar-shaped portion.
The locking portion is a pulley in which the wire is extended upward and in the direction of the second point.
The end of the wire stretched in the direction of the second point is fixed to the upper horizontal bar.
The automobile lifting assist device according to claim 1, wherein the elastic member urges the moving portion toward the first point. The moving portion is an arm that rotates around the second point.
The locking portion is a hook provided on the arm.
When the arm is rotated by 180 degrees from the upper horizontal bar-shaped portion, the locking portion is directly above the first point.
When the arm is rotated by 90 degrees from the upper horizontal bar-shaped portion, the locking portion is directly above the second point.
The automobile lifting assist device according to claim 1, wherein the elastic member urges the arm in a direction in which the rotation angle increases. The automobile lifting assist device according to any one of claims 1 to 3, wherein the elastic member is a spring.