JP3007386U - Sill crossing - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] A device with a simple structure that floats heavy objects is installed at the bottom of heavy objects with wheels, and the convex part of the floor is smoothly straddled, Enables more flexible movement. [Structure] Two guide portions 7 arranged in parallel with the wheels of the box body 3 which is a heavy object and provided in the longitudinal direction of the box body 3, two slide bodies 6 sliding in the guide portion, and one of which is a box Body 3
A spring 16 fixed to the slide body 6 and the other of which is linked to the upper side of the slide body 6, a wheel 5 is attached to the lower end of the slide body 6, and a movable pulley 14 is pivotally attached to the upper side thereof. A plurality of constant pulleys 12 and 13 are fixed below 14, and the wire 11 is connected to the winding drums 9 and 1.
One fixed pulley 12, a moving pulley 14, another fixed pulley 13, and another moving pulley 14 are in contact in this order, and the wire 11 is wound by the winding drum 9, whereby the slide body 6 extends downward.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for floating a heavy load with wheels above the floor.

[0002]

[Prior art]

 Conventionally, many heavy objects that need to be moved have a plurality of wheels attached to their bottoms.While the wheels work effectively for moving on a flat surface, there is a protrusion such as a sill on the floor. In order to straddle heavy objects without damaging the sill, usually, multiple people lift the front and rear of the heavy object or move flat plates on the sill.

[0003]

[Problems to be solved by the device]

 In order to solve these problems of the prior art, the present invention incorporates a device with a simple structure for floating a heavy object at the bottom of a heavy object with wheels, and allows the convex portion of the floor surface to be spread smoothly over the weight. It is an object of the present invention to provide a device for enabling more flexible movement of objects and reducing costs.

[0004]

[Means for Solving the Problems]

 As a means for solving the above problems, the present invention basically provides a plurality of guide parts, a slide body fitted in the guide parts, and a slide body in a heavy object with wheels mounted thereon. It is characterized by comprising a rotating body attached to the lower end and a slide mechanism.As a more specific example of the slide mechanism, a plurality of guide portions, a slide body that slides in the guide portions, and a slide body are provided above the slide body. We adopted a means to pull the spring to, a wheel at the lower end of the slide body and a pulley at the upper part, and to wind the wire through these pulleys.

[0005]

[Action]

 The device of the present invention is constructed as described above, and the slide body housed in the heavy object is lowered manually or electrically, and the lower end of the slide object is grounded by the wheel attached to the heavy object. The heavy object itself is lifted by being extended to the floor surface, and the lower part of the wheel of the heavy object exceeds the convex part of the floor by tilting with the lower end of the slide body as a fulcrum, allowing the heavy object to straddle. You can Then, when one of the wheels of the heavy object straddles the convex portion of the floor surface and then raises the slide body in the opposite direction, the obstacle is eliminated, so that the heavy object can be moved to the depth of the convex portion of the floor surface. If the slide body is moved down again to move the heavy load, the rear wheel of the heavy load will cross the threshold.

[0006]

【Example】

 An embodiment of the device according to the present invention will be described with reference to the drawings. However, the technical scope of the present invention is not limited to the wording of this embodiment and the scope of claims for utility model registration, and extends to an equal scope. 1 is an explanatory view of the principle of the present invention, and FIG. 2 is a schematic side view showing an operating state of the present invention.

The operation principle of this device will be described in order. As shown in FIG. 2, two pairs of four wheels 4 are usually provided on the bottom surface of the heavy object. However, the number of wheels is not specified. The heavy object is the box 3 as shown in FIG. 2, but the shape is not limited at all. For example, a karaoke box has a considerable weight because it has an amplifier, an autochanger, a monitor, and a large amount of CDs built in. The wheels 4 are generally casters in which a pair of front wheels or rear wheels also rotate to the left and right, but a rotating structure such as this may be provided on all wheels. The left and right sides may not rotate. The box 3 can move on the floor 1 via wheels 4. If the floor surface is flat to the moving destination, it is sufficient to push the box 3 as it is, but if there is a step such as the threshold 2, its progress is hindered. If the box is light, the box can be floated manually, but if it is a heavy object, it will require a lot of manpower, or a sturdy flat plate, etc. must be provided to straddle the sill. I have to. In addition, if the force is applied incorrectly, the end of the step, etc. may be injured, or the person during transportation may be injured.

The device of the present invention has a mechanism different from the wheels 4 of the box body 3. As shown from the side in FIG. 2, it is located between the front and rear wheels 4 of the box 3, and as shown from the front in FIG. 1, the bottom part 8 of the box 3 is fixed to the box 3 inside the box 3. The guide member 7 is provided, and the slide body 6 that slides inside the guide member 7 is fitted. In this mechanism, it is necessary and sufficient for the slide body 6 to slide in the vertical direction (or diagonal direction) of the box body 3. Therefore, the shape of the guide part is the rectangular parallelepiped or cylindrical outer circumference of the slide body 6. It also includes the case of a structure that covers the entire surface or a guide rail structure that covers a part of the surface. Further, this slide mechanism may be provided on the outer side of the box. The slide body 6 has a rectangular parallelepiped shape or a cylindrical shape as described above, but it is not limited whether the inner portion is hollow or not. The lower end rotating body 5 is attached to the lower end of the slide body 6. This lower end rotating body 5 has the same shape as the wheels 4 of the box body 3 in the embodiment. However, for example, a spherical rotating body may be used. Further, the lower end rotating body 5 may be a caster that is a small wheel that can freely rotate in the left and right directions. The lower end rotating body 5 may be completely housed in the bottom surface portion 8 of the box body 3 or may be in a state in which the tip end thereof can be seen from the bottom surface portion 8. The number of slide bodies 6 is one pair in the embodiment, and the slide bodies 6 are arranged in parallel with the wheels 4 of the box body 3. If there is only one slide body 6, a heavy load will be applied to float a heavy object, which may cause a problem in its durability. If it is floated, the stability of the entire heavy object is impaired. May occur. Therefore, it is desirable that multiple lines be arranged in parallel.

The mechanism for sliding the slide body 6 may be manual or electric. In FIG. 1, the winding drum 9, the wire 11, the pulleys 12, 13, 14, 14 and the spring 16 are combined and slid. The pulley 12 is a fixed pulley fixed in the box 3. Further, the other pulleys 13 are similarly fixed in the box body 3. The pulley 14 is a moving pulley that is integrally pivoted to the upper portion of the slide body 6. The end of one wire-11 is locked to a stopper plate 15 at a required position of the box body 3, and the wire-11 is fixed to the movable pulley 14 on one slide body 6 and the box body 3. The fixed pulley 13, the movable pulley 14 on the other slide body 6, and the constant pulley 12 fixed in the box body 3 are sequentially wound on the winding drum 9. A spring 16 having one end fixed inside the box body 3 is attached above the slide body 6. In FIG. 1, the handle 10 is connected to the winding drum, but since the handle 10 is for winding the wire, an electric motor may be used in place of the handle 10. In this case, the power source may be an external outlet or a battery may be built in the box body 3.

According to the above structure, when the wire 11 is wound up by the winding drum 9, the length of the wire 11 between the winding drum 9 and the stopper 15 is shortened, and the pulley 12 and the pulley 13 are Since the position is fixed, the slide body 6 slides down downward against the elasticity of the spring 16. In the case of FIG. 1, since the compound pulley is a combination of a fixed pulley and a moving pulley, the force for lowering the slide body 6 is strong. When the winding drum 9 is rotated in the reverse direction, the elasticity of the spring 16 causes the slide body 6 to smoothly rise. In the embodiment, the two fixed pulleys and the two movable pulleys are combined, but the number of combinations can be changed depending on the relative relationship such as the weight of the box 3 and the traction force to be applied to the winding drum. Also. Although the slide body 6 is described as a single rod-shaped body, a slide body that is divided into two parts at the bottom or one that is divided into two parts at the top and is equipped with a plurality of movable pulleys is also conceivable.

As the slide mechanism of the slide body 6, in addition to a mechanism using a pulley, a mechanism utilizing hydraulic pressure, a combination of gears (for example, a slide body in the form of a spur gear and sliding), etc. Can also be considered.

The operating state of the threshold straddle of the present invention will be described with reference to FIG. In this state, the box 3 that has moved from the left to the right in the direction of arrow A has a sill 2 on the floor surface 1 and its convex portion makes it difficult to move to the right. The lower end rotating body 5 ′ of the slide body 6 is usually housed in the bottom surface portion of the box body 3. Here, when the winding drum 9 is wound up, the slide body 6 extends downward from the bottom surface portion 8 of the box body 3 due to the above structure, and the box body 3 floats when the floor surface 1 is grounded and further extended. If the position of the slide body 6 is slightly ahead of the middle of the wheel base of the wheels 4 of the box 3, the front of the box 3 will float. If a hand push rod is attached to the box body 3 and it is useful to pull the hand push rod backward, it will float if the push rod side is slightly displaced. If the slid body 6 is provided at a position just in the middle of the wheel base, the box body 3 which is a heavy object is tilted with the lower end rotating body 5 of the slide body 6 as a fulcrum in both front and rear.

As shown in FIG. 2, when the slide body 6 extends downward and the front of the box body 3 is floated, the lower portion of the wheel 4 of the box body 3 crosses the sill 2 which is the convex portion of the floor surface 1, and the sill 2 You can afford to straddle. After pushing the box 3 in the direction of arrow B and one of its wheels 4 crosses the sill 2, raising the slide body 6 in the opposite direction eliminates obstacles to the movement, so move the box 3 to the back of the sill 2. You can When the slide body 6 is lowered again, the rear wheel 4 of the box body 3 is lifted from the floor surface 1. Therefore, if the box body 3 is moved forward in the direction of arrow C in this state, the rear wheel portion 4 of the box body 3 is moved. Will straddle the threshold. It should be noted that when the rear wheel 4 is lifted, the lower end rotating body 5 of the slide body 6 is sufficiently placed on the sill. Then, after that, the slide body 6 may be raised and stored in the bottom surface portion 8 of the box body 3.

[0014]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects.

By incorporating a slide body having an extremely simple structure, the convex portion of the floor surface such as a sill can be smoothly straddled to enable more flexible movement of heavy objects.

[0016] Since a heavy object can be safely moved and a simple structure is provided, it can be manufactured at low cost.

[Brief description of drawings]

FIG. 1 is a diagram illustrating the principle of the present invention.

FIG. 2 is a schematic side view showing an operating state of the present invention.

[Explanation of symbols]

 2 Sill 3 Box 5 Lower rotating body 6 Slide 7 Guide 9 Winding drum 11 Wire-12 Pulley 13 Pulley 14 Pulley 16 Spring

Claims (3)

[Scope of utility model registration request] 1. A heavy object equipped with wheels, comprising a plurality of guide parts, a slide body fitted in the guide parts, a rotary body attached to a lower end of the slide body, and a slide mechanism. A characteristic sill straddle. 2. A plurality of guide parts, a slide body that slides in the guide parts, a spring that pulls the slide body upward, wheels are attached to the lower end of the slide body, and a pulley is pivotally attached to the upper side. The sill straddle according to claim 1, further comprising a sliding mechanism that winds a wire through these pulleys. 3. The sliding mechanism according to claim 1 or 2, wherein two sliding guides are arranged in parallel with the wheels of the box, which is a heavy object, and are provided in the longitudinal direction of the box, and slide inside the guide. Two slide bodies, a spring, one of which is fixed to the box body and the other of which is linked to the upper side of the slide body, wheels are attached to the lower end of the slide body, and a movable pulley is pivotally attached to the upper side. A plurality of constant pulleys are fixed below the movable pulley inside the box body, and the wire contacts the winding drum, one constant pulley, the movable pulley, another constant pulley, and the other movable pulley in this order. The sill straddle is characterized in that the slide body extends downward when the wire is wound by the winding drum.