JPH10119786A - Stock cart - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stock cart in which nesting can be carried out in the short length direction by installing a swing type caster on the intermediate part bottom face of a carriage frame. SOLUTION: For nesting, a carriage 4 is raised and fixed in a side face frame 5, which is formed close to the rear end part, by means of a chain or string. In this process, a caster arm 31 is lifted upward by means of energizing force of an elastic repulsive spring until it reaches the expansion limit height of the elastic repulsive spring or until it is brought into contact with a control wall, and then, the caster arm 31 is stopped stationarily above a plane formed of the lower ends of swivel casters 2. In this way, a stock cart functions as a four-wheel cart, and the stock cart can be moved in the short length direction so as to be housed. For use, the carriage 4 is pushed down onto a carriage frame 1 so as to be used as an object placing plate. A caster pressing body 41 in the carriage 4 presses the caster arm 31 downward, so that a fixed caster 301 is brought into contact with the ground, and as a result, the cart functions as a six-wheel cart.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stock cart having high nesting efficiency, which is used for transporting goods stored in cardboard boxes and the like and for storing and storing goods.

[0002]

2. Description of the Related Art In a conventional stock cart, as shown in FIGS. And a pair of movable shelves removably mounted on the front and rear portions of the bogie with fixed casters 30 attached to the bottom surfaces of both sides of the center (not shown). In order to store the trolley in a nesting state, nesting was performed in the longitudinal direction from one direction of fixed casters.

[0003]

However, in the case of such nesting, a large space is required in the longitudinal direction, so that there is a problem in that the space is effectively used.

Accordingly, it is an object of the present invention to provide a stock cart that can be nested in a short direction.

[0005]

Under such circumstances, the present inventors have conducted intensive studies and, as a result, completed the present invention. That is, the present invention includes a bogie frame having a nesting structure, a swivel caster mounted on a bottom surface near four corners of the bogie frame, and a swing-type caster mounted on a substantially middle bottom surface of the bogie frame. A feature is to provide a stock cart which is a feature. Further, according to the present invention, the caster of the swing type caster is a fixed caster which is grounded by the pressing force of the base plate when in use, and the flexible caster is formed by an elastic body which urges a caster arm for fixing the fixed caster upward during nesting. It is characterized in that it is stationary above a surface formed at the lower end. In addition, the present invention provides a truck frame formed in a Z-shape or an inverted Z-shape, or further comprising a pair of casters mounted rotatably on a portion near the rear end of the bogie frame. An object of the present invention is to provide a stock cart including a base plate provided with an arm pressing body and a side frame detachably or fixedly attached to at least a rear end portion of the bogie frame.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 4 show a perspective view, a front view, a plan view, and a side view, respectively, showing the entire configuration of the stock cart of the present invention. 1 to 4,
The stock cart 10 is a cart frame 1 on casters,
The vehicle includes a pair of side frames 5, a bar member 6 for hanging a hanger, and a base plate 4.

The bogie frame 1 includes a pair of members 101 which are spaced apart from each other by a predetermined distance and arranged in parallel and symmetrically with each other, and a connecting member 202 which integrally connects diagonal ends of the left and right members 101. To form a Z-shape. Swivel casters 2 are attached to the bottom surfaces of both ends of both members 101 of the trolley frame 1 via caster seats 201, respectively, and swing type casters 3 are attached to the center bottom surface of the connecting member 202. Further, side frames 5, 5 formed by fixing both ends to the ends of the left and right members 101 are provided. A bar member 6 for hooking a hanger for connecting the side frames to each other is provided above the side frames 5 and 5. The base plate 4 is a rectangular flat plate with four corners cut out, and is rotatably attached to a portion 42 from the rear end of the bogie frame 1 by a hinge. In addition, a pair of caster arm pressing bodies 41 having three trapezoidal cross sections are provided at the center of the rear surface of the base plate 4.

FIGS. 5 and 6 show a stock cart 1 according to the present invention.
FIG. 5 shows a swing type caster 3 used in the case 0, and FIG. 5 shows the right half in a nesting state and the left half in a use state in one figure. 5 and 6, a swing type caster 3 includes a pair of caster arms 31, 31 each having a fixed caster 301 at the back end, a caster arm support portion 32 fixed to the bogie frame 1, a caster arm 31, and a caster arm support. It comprises a pair of resilient springs 34 connecting the parts 32. The caster arm support 32 is provided with the height adjusting member 10.
3 and is fixed to the bogie frame 1 through the support holes 3
On both sides, there are provided support walls 3a, 33a, and on the other side, height limiting walls 322, 322 for avoiding collision with the bogie frame 1 during nesting. Engagement holes 331, 3 for fixing one end of a spring
31 are formed. The caster arm 31 has a pair of box-shaped structures that swing about the shafts 33, 33 with respect to the caster arm support 32, and a square hole for passing a spring 34 is formed in the center of the upper plate. An engagement hole 312 for fixing the other end of the spring 34 is formed in the bottom plate.

In the case of using the stock cart 10 of the embodiment configured as described above, the base plate 4 is lowered onto the bogie frame 1 and used as an article mounting plate. The base plate 4 may be simply placed on the trolley frame 1 or may be fixed with a fixture. At this time, the caster pressing body 41 of the base plate 4 presses the caster arm 31 downward, so that the fixed caster 301 is grounded to the ground.
Functions as a wheel. The contact surface of the universal caster 2 or the fixed caster 301 may be the same surface, or the contact surface of the fixed caster 3 may be lower than the contact surface of the universal caster 2. The six-wheeled vehicle can change directions around the fixed casters 301 and can run stably.

For nesting, the base plate 4 is raised and fixed to a side frame 5 formed near the rear end, for example, with a chain or a string, although not shown in the figure. At this time, the caster arm 31 is lifted upward by the biasing force of the spring 34 until it comes into contact with the contraction limit of the spring 34 or the height limiting wall 322 (it may be above the line AA in FIG. 5). No, so nesting is possible), Swivel caster 2
Is stopped above the surface formed by the lower end of the. Thus, the stock cart functions as a four-wheeled vehicle, and the stock cart can be moved in the short direction and stored in a form as shown in FIG.

When the stock cart 10 is nested, the four wheels travel only on the free casters, so that the stock cart 10 can move in a free direction and can be nested in a short direction. Therefore, the space can be effectively used.

In the present invention, the side frame only has to be attached to at least the rear end of the bogie frame. Even when a pair of side frames are provided at the front and rear ends, a bar member for hooking a hanger is provided. May not be required.

In the present invention, the bogie frame is not limited to the Z-shape as long as it has a nesting structure, and an inverted Z-shape, a U-shape or the like can be used.

[0014]

As is apparent from the above description, according to the present invention, a swing type caster is mounted on the center bottom surface of a bogie frame having a nesting structure, and the base plate is rotated to a position near the rear end of the bogie frame. The nesting efficiency is increased and the space can be used effectively by fixing the base plate to the side frame attached to the rear part when nesting, and moving it in the short direction by traveling with the free caster only Becomes

[Brief description of the drawings]

FIG. 1 is a perspective view showing the overall configuration of a stock cart of the present invention.

FIG. 2 is a front view showing the entire configuration of the stock cart of the present invention.

FIG. 3 is a plan view in which a part of the stock cart of the present invention is cut away.

FIG. 4 is a side view showing the overall configuration of the stock cart of the present invention.

FIG. 5 is a side view showing a concept of a use state of a swing type caster used in the stock cart of the present invention.

FIG. 6 is a perspective view of a part of a swing type caster used in the stock cart of the present invention.

FIG. 7 is a partially broken plan view showing a nesting state of the stock cart of the present invention.

FIG. 8 is a plan view showing a nesting state of a conventional stock cart.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cart frame 2 Swivel caster 3 Swing type caster 4 Base plate 5 Side frame 31 Caster arm 32 Caster arm support part 34 Spring spring

Claims (4)

[Claims] 1. A bogie frame having a nesting structure, a swivel caster mounted on a bottom surface near four corners of the bogie frame, and a swing-type caster mounted on a substantially middle bottom surface of the bogie frame. A featured stock cart. 2. The caster of a swing type caster is a fixed caster that is grounded by a pressing force of a base plate when in use, and a lower end of the free caster by an elastic body that urges a caster arm that fixes the fixed caster upward during nesting. 2. The stock cart according to claim 1, wherein the stock cart is stationary above a surface formed by the step. 3. The stock cart according to claim 1, wherein the bogie frame is formed in a Z shape or an inverted Z shape. 4. A base plate rotatably attached to a portion near the rear end of the bogie frame and provided with a pair of caster arm pressing bodies at the center of the back surface, and detachable from at least the rear end of the bogie frame. The stock cart according to any one of claims 1 to 3, further comprising a side frame fixedly attached.