KR19990068486A - Shock-absorbing apparatus of small goods hand truck - Google Patents

Abstract

The present invention relates to a package transport cart, by which the impact from the road surface can be absorbed and buffered at a portion rotatably supporting the rolling body so that the impact from the road surface does not reach the user who adjusts the transport cart. This aims to make it possible to transport the package more safely. The present invention constituted for this purpose is a package carrying cart comprising a frame forming a skeleton, a package loading portion for loading a package, and a cloud body for moving the frame, in a triangular form toward the rear of both sides of the bottom of the frame, towards the rear. It is installed and rotatably supports the rolling body, and has a feature comprising a shock absorber for absorbing and buffering the impact transmitted to the rolling body from the road surface. With this arrangement, the present invention not only prevents the impact from the road surface to the user who adjusts the transport cart, but also makes it possible to transport the package more safely, and also risks of accidents such as package damage and personal injury. The effect to reduce the effect is exerted.

Description

Shock absorber of package carrying cart {SHOCK-ABSORBING APPARATUS OF SMALL GOODS HAND TRUCK}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a package transport cart, and more particularly, to a shock absorber of a package transport cart that is capable of absorbing and cushioning a shock transmitted from a road surface when climbing and descending flats in a state of loading a package.

In general, the transport cart is a device for easily transporting a light and heavy package (small), such a transport cart has been developed that can move up and down stairs as well as flat.

On the other hand, the configuration of the above-described transport cart is usually composed of a frame, a loading frame for loading the package and the wheel for moving the cart. In addition to the above-described configuration, there has also been developed a transport cart equipped with a transmission for driving wheels.

In particular, in the case of a transport cart configured to move up and down stairs, it is common to use an electric transmission device for driving wheels for the easy movement of the transport cart in its configuration.

1 is a side view showing a conventional package carrying cart, Figure 2 is a side view showing a state of use of the conventional package carrying cart.

As shown in FIGS. 1 and 2, the conventional package transport cart 10 includes a frame 20 having a predetermined size constituting a skeleton, a package loading unit 30, and a frame for loading and supporting a package. It consists of a cloud body 40 for moving 20).

In addition to the above-described configuration, the upper side of the frame 20 is configured with handles 22 and 22a for adjusting the transport cart 10. Two handles 22 and 22a are disposed at the upper and lower sides in consideration of the user's body. It is configured, but more than two may be configured.

On the other hand, the rolling body 40 is to move the transport cart 10, the wheel is composed of at least one of the wheels 40 is configured, but in the case of the transport cart 10 to move up and down the stairs It consists of three wheels 42, 42a, 42b. Thus composed of three wheels 42, 42a, 42b each of which is composed of an angle of 120 °. In the case of the transport cart 10 to which such a rolling body 40 is applied, when moving flat, it is moved through two wheels {(42, 42a) or (42, 42b) or (42a, 42b)}, When moving up and down, it is moved through the cloud 40.

On the other hand, in addition to the above-described configuration, the drive means (not shown) and the electric power means including a battery (not shown) to drive the rolling body 40 by the electric force to be more convenient and easy to use Can be.

In the conventional transport cart 10 configured as described above, when moving up and down the stairs in the state in which the package is loaded on the package loading unit 30, when the driving motor (not shown) is driven, the rolling body 40 rotates. You will climb by one step. At this time, as shown in Figure 2, one of the wheels 42, 42a, 42b of the wheel 42 is supported on the lower step, the other wheel 42a is supported on the upper step, another wheel 42b is rotated toward the next upper step.

However, since the transport cart configured as described above has no means for absorbing and buffering the impacts transmitted from the wheels, if the impacts are transmitted to the wheels when moving on flat ground or when moving up and down the stairs, the impacts are transmitted through the frame. There is a problem that is conveyed to the user and then to the user who is adjusting the transport cart.

Therefore, there may be a case in which a transport cart that is in transit may be missed, which may cause a danger to the user, as well as a problem in which damage may be caused by dropping the package.

The present invention has been devised to solve the above-described problems, so that the impact from the road surface can be absorbed and buffered at a portion rotatably supporting the rolling body so that the impact from the road surface does not reach the user adjusting the transport cart. In addition, the object of the present invention is to provide a shock absorber of the package transport cart, which enables transport of the package more safely.

Another object of the present invention is to reduce the risk of accidents, such as damage to the extinguishing product and personal injury due to the impact by preventing the impact transmitted from the road surface to the user to adjust the transport cart.

Features of the present invention configured to achieve the above object are as follows. That is, in a package transport cart comprising a frame forming a frame, a package loading portion for loading a package, and a rolling body for moving the frame, the package is installed in a triangular shape at the rear of both sides of the rear of the frame in a rearward direction. It is rotatably supported and includes a shock absorber that absorbs and buffers the shock transmitted from the road surface to the rolling body.

The shock absorber described above may be a shock absorber made using any one of a spring, hydraulic pressure, pneumatic pressure, gas pressure, and rubber as a shock absorber.

In addition, the above-described shock absorber may be made of a corrugated pipe with a corrugation formed on the pipe surface.

On the other hand, the above-mentioned shock absorber may be made of a shock absorber using a corrugated pipe with a corrugation formed on the pipe surface, the shock absorber of the shock absorber may be made using any one of spring, hydraulic pressure, air pressure, gas pressure and rubber.

1 is a side view showing a conventional package carrying cart.

Figure 2 is a side view showing a state of use of a conventional package transport cart.

Figure 3 is a perspective view of the buffer means of the package transport cart according to the present invention.

Figure 4 is a side view showing a package transport cart according to the present invention.

Figure 5 is a side view showing a state of use of the package transport cart according to the present invention.

Figure 6 is a side view showing another buffer means of the package transport cart according to the present invention.

Figure 7 is a side view showing another cushioning means of the package transport cart according to the present invention.

** Description of symbols for the main parts of the drawing **

100, 200, 300. Package carrying cart

110, 210, 310.frame

112, 112a. handle

120, 220, 320. Packaged compartment

130, 230, 330. Cloud

132, 132a, 132b, 232, 232a, 232b, 332, 332a, 332b. wheel

134, 234, 334. Rotation axis

140, 140a. Shock absorber

142, 142a, 242, 344. Rotating Shaft Support Bracket

150. Drive motor

152. Battery

240, 240a. Corrugated pipe

340, 340a. Shock absorber

342, 342a. Corrugated pipe

A, A ', A ", B, B', B". wrinkle

Hereinafter, with reference to the accompanying drawings will be described in detail the shock absorber of the package transport cart according to a preferred embodiment of the present invention.

Figure 3 is a perspective view showing a buffer means of the package transport cart according to the present invention, Figure 4 is a side view showing a package transport cart according to the present invention, Figure 5 is a side view showing a state of use of the package transport cart according to the present invention.

As shown in FIGS. 3 and 4, the package transport cart 100 according to the present invention includes a frame 110 forming a skeleton, a package stack 120 for loading a package, and a package transport cart 100. It consists of a rolling body 130 and a transmission means for driving the rolling body 130.

The above-mentioned frame 110 forms a main body, that is, a skeleton of the package transport cart 100, and is generally manufactured in a size suitable for the weight, volume, and user's body of the package.

On the other hand, the handle 112, 112a for adjusting the transport cart 100 is configured on the upper side of the frame 110. At this time, the handle (112, 112a) is composed of at least one, in the present invention, by configuring the two handle (112, 112a) to be easily used according to the user's physical condition.

At this time, the handle (112, 112a) as described above is to be able to vary the length thereof, and may be fixed, but in the present invention when manufacturing the frame 110, a single frame 110 with one bar ), And the handle 112 is formed by bending the upper side of the frame 110. Therefore, the frame 110 and the handle 112 of the present invention are made in one piece. And, another handle 112a is manufactured separately and connected to the place of the frame 110.

The above-mentioned package loading part 120 is for loading and supporting a package, and is installed in the front side of the lower side of the frame 110. In addition, the package loading unit 120 is also a means for setting up the package transport cart (100).

And, the rolling body 130 is for moving the transport cart 100, three wheels (132, 132a, 132b) configured in the rolling body 130 is composed of three at an angle of 120 °, respectively. The transport cart 100 to which the cloud body 130 is applied is moved through two wheels {132, 132a or (132, 132b) or (132a, 132b) when moving on a flat surface, and climbs the stairs. When getting off, it is moved through the cloud body 130. On the other hand, the rolling body 130 is installed and fixed on both sides of the rotary shaft 134 to rotate with the rotation of the rotary shaft 134, the rotary shaft 134 is installed on the back of the frame 110 to impact from the road surface It is rotatably supported by a cushioning means for absorbing and buffering it. Detailed description will be described later.

The above-mentioned shock absorbing means is for realizing the shock absorbing device of the package carrying cart which this invention aims at, and shock absorbers 140 and 140a are used for this shock absorbing means. Such shock absorbers 140 and 140a use any one of a spring, hydraulic pressure, pneumatic pressure, gas pressure, and rubber as a cushioning material. That is, as the shock absorbers 140 and 140a, a spring shock absorber, a hydraulic speed absorber, a pneumatic shock absorber, a gas pressure shock absorber and a shock absorber using rubber are used.

One end of the shock absorber 140, 140a as described above is supported by the upper and lower sides of the rear surface of the frame 110, and the other end is connected to the rotary shaft support brackets 142 and 142a for supporting the rotary shaft 134. It is a structure made up of vertices. That is, the shape of the frame 110 and the two shock absorbers 140 and 140a is formed at the bottom of both sides of the frame 110 and the two shock absorbers 140 and 140a are formed in the form of a triangle forming the other two sides. Structure.

In more detail, each of the shock absorbers 140 and 140a described above is supported at both ends of each of the rear sides of the frame 110 at the top and bottom thereof, and the other end of each of the shock absorbers 140 and 140a is a rotation shaft support bracket. Connected by (142, 142a) to form a vertex of a triangle. The shock absorbers 140 and 140a installed as described above are provided in the form of a frame 110 and a triangle in a pair of two on the right and left sides of the rear of the frame 110, respectively.

The shock absorbers 140 and 140a of the structure thus installed are absorbed and cushioned when the shock from the road surface is transmitted through the wheels 132, 132a and 132b. Thus, the impact from the road surface hardly reaches the user who adjusts the package transport cart 100 so that the user can safely use the package transport cart 100.

On the other hand, when looking at the coupling structure of the shock absorbers 140, 140a and the cloud body 130, as described above, one end of the shock absorbers 140, 140a is supported up and down on both sides of the rear surface of the frame 110, respectively. In the state where the other end is connected by the rotation shaft support brackets 142 and 142a, the rotation shaft 134 is rotatably supported through the center of the two rotation shaft support brackets 142 and 142a. As described above, three wheels 132, 132a, and 132b are coupled to and fixed to both ends of the rotation shaft 134 supported at the center of the two rotation shaft support brackets 142 and 142a at an angle of 120 °.

In addition to the configuration of the package transport cart 100 as described above, a transmission means for driving the rolling body 130 is configured to make it easier to use the transport cart 100. The transmission means includes a drive motor 150 for driving the rotary shaft 134, a battery 152 for supplying power to the drive motor 150, and a control switch for controlling the power of the drive motor 150 (not shown). ) Is configured. At this time, the driving force of the drive motor 150 is transmitted to the rotation shaft 134 by the teeth (의) of the gear 136. In addition, the above-described transmission means may be further configured to reduce the speed for controlling the speed.

When summarized and summarized the shock absorber of the package transport cart according to the present invention configured as described above are as follows. That is, the buffer device of the package transport cart is a package transport cart 100 is provided with a frame 110 constituting a skeleton, a package loading unit 120 for loading the package and a cloud body 130 for moving the frame 110 In the structure of), one end is supported up and down on both sides of the rear surface of the frame 110, and the other end is provided with shock absorbers 140 and 140a connected to the rotation shaft support brackets 142 and 142a. Mechanical shock is to be buffered in the shock absorber (140, 140a) described above.

In this case, the rotating shaft 134 is rotatably supported through the center of the rotating shaft support brackets 142 and 142a, and three wheels 132, 132a, and 132b are formed at an angle of 120 ° at both ends of the rotating shaft 134. The cloud body 130 is coupled and fixed.

Looking at the action and effect of the package transport cart 100 according to the present invention configured as described above, when moving the flat in the state in which the package is loaded on the package loading unit 120, two wheels {(132, 132a) or , (132, 132b) or (132a, 132b)}. At this time, it may be moved by driving the drive motor 150 through the transmission means.

On the other hand, in the package transport cart 100 when moving up and down the stairs in the state in which the package is loaded on the package loading unit 120, when driving the driving motor 150, the rolling body 130 by the rotation of the rotating shaft 134 As you rotate, you go up one step. In this case, as shown in FIG. 5, one wheel 132 of the three wheels 132, 132a, and 132b is supported on the lower step, the other wheel 132a is supported on the upper step, and another wheel 132b is rotated toward the next upper step.

As described above, when an impact from the road surface is transmitted to the wheels 132, 132a, and 132b when climbing up or down a flat surface or stairs, the shock absorbers 140 and 140a are transmitted through the rotation shaft 134. At this time, the shock transmitted to the shock absorbers 140 and 140a is absorbed and buffered by the action of spring, hydraulic pressure, air pressure, gas pressure, or rubber, that is, contraction and relaxation, which are shock absorbing materials of the shock absorbers 140 and 140a. do.

In this way, the impact from the road surface transmitted to the shock absorbers 140 and 140a is mostly absorbed and buffered by the shock absorbers 140 and 140a, and the influence is on the user who adjusts the package transport cart 100 through the frame 110. Because it does not extend, the user can use the package transport cart 100 more safely.

In addition, it is possible to reduce the risk of accidents due to the impact from the safe road surface by using the package transport cart 100.

Figure 6 is a side view showing another buffer means of the package transport cart according to the present invention. Figure 7 is a side view showing another cushioning means of the package transport cart according to the present invention.

6 and 7 are to show another buffer means of the package transport cart according to the present invention, first as shown in Figure 6 another buffer means of the package transport cart 200 according to the present invention is framed frame 210 In the structure of the package transport cart 200 is provided with a package loading portion 220 for loading the package 220 and a rolling body 230 for moving the frame 210, wrinkles (A, A ') formed on the tube surface One end of the corrugated pipes 240 and 240a is supported up and down on both sides of the rear surface of the frame 210, and the other end is installed to have a triangular shape with the rotation shaft support bracket 242 so that the mechanical impact from the road surface is corrugated. It is to be buffered in the wrinkles (A, A ') portion of (240, 240a). At this time, the wrinkles (A ") is also formed in the portion of the frame 210 corresponding to the base of the triangle formed by the two corrugated pipe (240, 240a) and the frame 210.

On the other hand, the rotating shaft 234 is rotatably supported through the center of the rotating shaft support bracket 242, the rolling body consisting of three wheels (232, 232a, 232b) at an angle of 120 ° at both ends of the rotating shaft 234 230 is combined and fixed.

The package carrying cart 200 configured as described above is transmitted to the corrugated pipes 240 and 240a through the rotating shaft 234 when an impact from the road surface is transmitted to the wheels 232, 232a and 232b when moving up and down the flat or stairs. come. At this time, the shock transmitted to the corrugated pipes 240 and 240a is due to the contraction and relaxation of the corrugations A and A 'formed on the corrugated pipes 240 and 240a and the corrugated A "formed on the frame 210. Absorb and buffer.

As such, the shock transmitted to the corrugated pipes 240 and 240a is mostly absorbed and buffered in the wrinkles (A, A ', A "), and the influence is applied to the user who adjusts the package transport cart 200 through the frame 210. Because it does not extend, the user can use the package transport cart 200 more safely.

Meanwhile, as shown in FIG. 7, the septal shock absorbing device according to the present invention also has a frame 310 forming a skeleton as shown in FIGS. 2 to 5 and 6, a package loading part 320 and a frame for loading a package ( It is the same as having the structure of the package carrying cart 300 provided with the rolling body 330 for moving 310, but the corrugated pipes 342 and 342a in which the wrinkles B and B 'were formed in the tube surface in the buffer means. It consists of shock absorbers (340, 340a) using.

At this time, shock absorbers 340 and 340a using corrugated pipes 342 and 342a having corrugations B and B 'formed on the pipe surfaces are also installed in the structure shown in FIGS. 2 to 5 and 6. That is, each of the shock absorbers 340 and 340a described above is supported at both ends of the rear surface of the frame 310 at both sides, and the other end of each of the shock absorbers 340 and 340a is supported by the rotation shaft support bracket 344, 344a) form the vertices of the triangle. The shock absorbers 340 and 340a installed as described above are provided in the form of a frame 310 and a triangle in a pair of two on the left and right sides of the rear of the frame 310. At this time, the wrinkles B ″ are formed in the portion of the frame 310 corresponding to the base of the triangle formed by the two shock absorbers 340 and 340a and the frame 310.

The package carrying cart 300 configured as described above has the shock absorbers 340 and 340a of the shock absorbers 340 and 340a transmitted from the road surface to the shock absorbers 340 and 340a through the wheels 332, 332a and 332b and the rotating shaft 334. The shock is absorbed and buffered by the action of spring, hydraulic pressure, air pressure, gas pressure or rubber, that is, cushioning and relaxation, and the impact is also caused by shrinkage and relaxation in the wrinkles (B, B ', B "). This absorbs and buffers.

The shock transmitted to the shock absorbers 340 and 340a is absorbed and buffered at the shock absorbing and wrinkled portions B, B 'and B "of the shock absorbers 340 and 340a, and transports the package through the frame 310. Since the influence does not affect the user adjusting the cart 300, the user can safely use the package transport cart 300, as well as reduce the risk of an accident due to the impact from the road surface.

The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the technical idea of the present invention.

As described above, according to the present invention, the shock transmitted to the wheels of the package transport cart can be absorbed and buffered at a portion rotatably supporting the rolling body so that the impact from the road surface does not reach the user who adjusts the transport cart. Of course, this has the effect of being able to transport the package more safely.

In addition, the present invention is effective to reduce the risk of accidents, such as package damage and personal injury accidents by the impact by preventing the impact transmitted from the road surface to the user to adjust the transport cart.

Claims (4)

A package transport cart comprising a frame forming a frame, means for loading a package, and rolling means for moving the frame, Shock absorbing device of the package transport cart, characterized in that it is installed in the form of a triangle toward the rear of the lower rear side of the frame to support the rolling body rotatably, buffer means for cushioning the mechanical impact from the road surface . The shock absorber of claim 1, wherein the shock absorber is a shock absorber made of any one of spring, hydraulic pressure, pneumatic pressure, gas pressure, and rubber. The shock absorber of claim 1, wherein the buffer means comprises a corrugated pipe having a corrugation formed on the pipe surface. According to claim 1, wherein the buffer means is made of a shock absorber using a corrugated pipe with a corrugation formed on the pipe surface, The shock absorber of the shock absorber is a shock absorber of the package transport cart, characterized in that using any one of spring, hydraulic pressure, air pressure, gas pressure and rubber.