WO1999065710A1 - Household cart - Google Patents

Abstract

A household cart capable of being moved smoothly in all directions even in a narrow passage and having a high load resistance, a high stability and so beautiful an appearance that it can be used even as interior article; and wheels and fixing devices which are optimaly used for the household cart. Specifically, a cart which has wheels fixed to a lower surface of a cart body (A), wherein a considerably large thickness is given to the cart body (A) so as to provide the cart with both a low overall height and a beautiful appearance, at least three ball castors (B) are used as the wheels, and a method of embedding a castor in the interior of the cart body (A) is employed as a method of fixing the ball castors (B) to the cart body (A), each of the ball castors (B) is formed by providing a cylindrical member (B1) with at least one annular projection (B2) on an outer circumferential surface thereof, and covering a spherical member (B3) with an elastic outer case (B5) or forming it solidly with an elastic material, and the cart fixing devices use horizontally fitting type detachable fixing units (C) for ball castors.

Description

 Description Home trolley Technical field

 The present invention relates to a trolley, and more particularly, to a trolley that can be an interior particularly suitable for use in ordinary households. ΡΤ Λ¾ technique i r

 As a conventional trolley, there is known a trolley in which three or more wheels or casters are attached to the back of the pedestal, and a handle for moving the trolley is provided on one side of the pedestal.

 The trolley with such a structure is mainly designed for use outdoors or in stores, and has a structure suitable for it.

However, the role of the trolley in carrying luggage is not at all impaired in ordinary households, but rather can be said to be indispensable for the elderly and women. Thus, in view of the necessity of using trolleys in ordinary households, conventional trolleys inevitably have many disadvantages. First of all, when trying to move wheels or casters in any direction, it is necessary to perform a preparatory operation to provide assistance, and it is difficult to move smoothly in narrow passages. (This problem is particularly noticeable in trucks that use wheels.) Second, in order to alleviate the first problem to some extent, if casters are used instead of wheels, support will be needed. This is because the shaft is displaced between the legs and the rolling wheels, which lowers the load. Third, the vehicle height is high and the stability is poor. Further, the disadvantages of using the conventional cart in ordinary households are not limited to the above-mentioned functionality. In recent years, with the improvement of living standards, for example, toilets such as toilet bowls, which have traditionally only required functionality, have required interior aesthetics. Is no exception. Looking at conventional trolleys from the viewpoint of aesthetics, it is extremely insufficient to use them as trolleys and interiors at home. This insufficiency in aesthetics is directly caused by the shape of the loading tray, but indirect and technical aspects such as the height of the vehicle and the method of mounting the moving wheels are also visible. It is something that cannot be neglected. In other words, the conventional bogie has a high vehicle height, and has a structure in which the moving wheels are directly mounted on the receiving platform with bolts or the like, but from an aesthetic point of view, it is apparent that the vehicle height is high. The stability of the vehicle is impaired, and the moving wheels are more likely to enter the field of view. Also, the fact that the bolts etc. of the mounting portions of the moving wheels are exposed means that the bogies are not Is greatly impaired.

 The present invention has been made in view of such problems of the prior art, and has as its object to smoothly move in any direction even in a narrow passage, and to improve loadability and stability. The purpose of this invention is to provide a home dolly that has an aesthetic appearance that can be used as an interior and that can also be used as an interior, and a moving wheel and a fixing device that is optimal for such a home dolly. Although the present invention is particularly useful for home use, it is also very useful in offices and other places. Disclosure of the invention

In order to achieve the above object, a home trolley according to the present invention is a trolley having a structure in which a moving wheel is attached to the back surface of a receiving stand, Each of them has a structure in which three or more ball casters are used, the load receiving table has a considerable thickness, and the method of mounting the ball casters is a method of being embedded in the load receiving table.

 The use of a ballcassette makes it possible to move in all directions without the need for preparatory movements, and because the supporting leg and the rolling wheel have the same axis, the load capacity is high and the vehicle height is kept low. This results in excellent stability.

 In addition, by increasing the thickness of the loading platform and embedding the ball casing in the loading platform, the height of the bogie can be further reduced, increasing the apparent stability and moving wheels of the loading platform. It is difficult to enter the field of vision hidden by the shadow. Also, even if the trolley is viewed from the back, the mounting portion of the ball casser will not be exposed, so the aesthetic appearance of the trolley will not be impaired.

 The well-known ball-casing ball usually consists of a steel ball, a cylinder for containing the ball, and a number of bearing balls interposed between the two. The ball caster had the drawback that the cylindrical body was flat and low in strength, so it was easily deformed by a slight impact from the side, which hindered the rolling of the sphere. In addition, since the sphere is made of steel, the floor surface, which is in point contact, is easily damaged, the sphere and the bearing ball are in contact with each other, and noise is likely to be generated. . Floor damage and noise generation are serious problems, especially in ordinary homes.

 Therefore, as the ball casing used for the above-mentioned home dolly, one or more ring-shaped constrictions are protruded along the outer circumference of the cylindrical body, and the spherical body is covered with an elastic outer skin or solidly formed of an elastic body. It is advisable to use a shaped ball pad.

First, the cylindrical body has a constriction, which increases the strength of the cylindrical body. Even if a large impact is applied to the cylinder from the side, deformation is less likely to occur. Next, since the surface or the whole of the sphere is made of an elastic body, the elastic body is not high in hardness and the part in contact with the floor surface is in slight surface contact, so that the floor is not damaged. Also, since the sphere and the bearing ball are not in contact with each other but in contact with the elastic body and the metal, noise is less likely to be generated. Furthermore, of course, no 锖 will occur.

In addition, a fixing device is indispensable for the bogie in order to use it on slopes and prevent accidents, etc.However, the fixing device for fixing the bogie has been conventionally used when wheels are used as moving wheels. , wheels or integrated scan topper mechanism trolley, when a caster and ball Cass evening as moving wheels, the stopper one mechanism or pan is often used _c However, household trolley according to the present invention However, since the height of the vehicle is low, it is difficult to operate even if a stopper mechanism is provided in the ballcassette, and if a storage mechanism is provided on the loading tray, etc., the appearance will be impaired. However, a stopper mechanism cannot be used. It is also possible to use a tray, but with the tray, it is necessary to lift the trolley every time it is fixed, attach the tray, and lift the trolley every time it moves, and remove the tray. It is complicated and inconvenient.

 Therefore, as the fixing device used for the home dolly of the present invention, a small circular casing receiving hole is formed substantially at the center of a disc-shaped substrate having elasticity, and the casing surrounding the casing receiving hole is formed. The mortar-shaped side wall extends in a ring shape, a handle is provided on one side of the board, and a delta-shaped opening is provided in the opposite direction, so that the opening, the caster receiving hole, and the handle are connected in a straight line. It is desirable to use a detachable fixing device for a ball caster having a structure in which a slit is inserted in a side wall.

This fixture is detachable so that the ball cas It can be easily fixed without lifting the bogie.

 Specifically, first, hold the handle of the fixture, and apply the opening of the fixture to the ballcass. The opening is spread in a delta shape, so it is easy to hit the ballcass evening. Next, push the fixture horizontally. Since the fixing device has elasticity, the fixing device is divided into right and left along the slit so as to sandwich the ball casing. When the ball cascading sphere enters the ball casing receiving hole surrounded by the side wall, the left and right sides of the fixed fixture return to the original position due to the restoring force of the elastic body. This will close the approach path that you have just entered. As a result, the sphere in the ball case is completely surrounded by the side wall, and the fixation is completed. In addition, from the viewpoint of aesthetics, it is preferable that the fixing tool be rotated so that the handle is turned deeply out of sight. To release the fixture, simply pull out the handle of the peripheral tool from the back, hold the handle, and pull out the fixture horizontally. BRIEF DESCRIPTION OF THE FIGURES

 FIG. 1 is a front view showing a home dolly according to the present invention.

 FIG. 2 is a plan view showing a home dolly according to the present invention.

 FIG. 3 is a front sectional view showing a home dolly according to the present invention.

 FIG. 4 is a front view showing a home dolly according to the present invention having a detachable fixing device for a ballcassette.

 FIG. 5 is a front sectional view showing a home dolly according to the present invention having a detachable fixing device for a ballcassette.

FIG. 6 is a front view showing a ball caster in which a ring-shaped constriction is protruded from an outer peripheral portion of a cylindrical body. FIG. 7 is a front sectional view showing a ball casing in which a ring-shaped constriction is provided on the outer peripheral portion of the cylindrical body.

 FIG. 8 is a bottom view showing a ball caster in which a ring-shaped constriction is provided on the outer peripheral portion of the cylindrical body.

 FIG. 9 is a plan view showing a detachable fixing device for a ball caster.

 FIG. 10 is a side view showing a detachable fixing device for a ball caster. FIG. 11 is a front view showing a detachable fixing device for a ball caster. FIG. 12 is a front sectional view showing a detachable fixing device for a ballcassette. BEST MODE FOR CARRYING OUT THE INVENTION

 In order to describe the present invention in more detail, levers will be described with reference to the accompanying drawings.

 1 to 5 show a home dolly according to the present invention. This home trolley consists of a loading tray 有 す る with a considerable thickness, a special ball caster B mounted on the back of the trolley, and a removable ball caster mounted on the ball caster B. It consists of a fixture C.

 The receiving table A is composed of a circular base plate A1 having a thickness of about 10 to 20 thighs and a side wall A2 extending around the outer periphery thereof. It is desirable to form it by integral molding.

 Here, the size of the loading table A may be various as required, but the thickness of the base plate A 1 is considerably large because a ball caster must be embedded, for example, 1 O mm The above is required. The side wall A2 is provided to prevent the load from falling, but it is not always necessary to provide the side wall.

In addition, the base plate A 1 is not necessarily limited to a circular shape, but may be a square shape, Although a rectangular shape can be used, the circular shape allows smoother movement in a narrow passage with force, smooth rotation on the spot, no corners and safety There is an effect that is increased.

 The ball caster B is mounted so that it is embedded in the back of the loading tray A to about half the thickness of the loading tray A. By doing so, the length of the ball casing B projecting from the loading table A, that is, the vehicle height of the bogie can be set to about 15 mm to 20 mm, and a further lower vehicle height can be realized. In addition, even when the bogie is viewed from the back, the mounting portion of the ball caster B is not exposed, so that the appearance is not impaired.

 Here, as a method of embedding the ball case B, it is most preferable to embed the material at the same time as the molding of the receiving table A, and it is most preferable in terms of strength, workability, and aesthetics. The gap may be filled with the same material as the loading table A. Further, the ball casing B may be sandwiched between the upper and lower base plates A1. It should be noted that instead of using the embedded method, it can be simply attached to the surface of the back side of the loading table A using screws or the like, but in that case, the appearance is extremely inferior.

 Furthermore, the number of ball casters B to be mounted may be any number as long as it is three or more, but four are preferable in consideration of the balance between stability and load distribution.The mounting position should be balanced between stability and aesthetics. In consideration of this, outside of the loading tray A and in a place that is hard to see, that is, from the outer periphery of the loading tray A

2 O m n! ~ 3 O mm It is desirable to enter a place inside.

 As shown in Fig. 4 and Fig. 5, the detachable fixing device C for the ballcassette can be installed by pushing it horizontally into the ballcassette B and sandwiching the ballcass B from the left and right. It can be removed by pulling it horizontally.

Also, the cart may be provided with one or more hooks D. To do This makes it possible to hang a string on the hook, which is very convenient for moving, fixing, and storing the cart. However, from an aesthetic point of view, the hook D should be placed on the back side of the receiving case A, in a place where it is easily accessible and hard to see into the field of view, i.e., at a position about 20 mm to 30 mm inside the outer periphery of the receiving stand A. It is desirable.

 FIG. 6 to FIG. 8 show the ballcassette B which is desirably used for the home dolly according to the present invention in more detail. The ball caster B has a cylindrical body B1 having a ring-shaped constriction B2 protruding along the outer periphery, a spherical body B3 having a core material B4 covered with an elastic outer skin B5, and a ball caster B interposed therebetween. And a bearing ball B6. For example, one constriction B2 is provided here, and four bearing balls B6 are used here, for example. ',' Also, it is desirable to use a metal such as steel for the core material B4, and it is desirable to use reinforced rubber or plastic for the elastic outer skin B5. Although a screw hole B7 for mounting is provided on the upper surface of the cylindrical body B1, the screw hole B7 is not used in a home dolly that is mounted by an embedded method.

9 to 12 show in more detail a detachable fixing device C for a ballcassette, which is desirably used for a home dolly according to the present invention. The ball caster detachable fixing tool C has a small circular caster receiving hole C2 substantially at the center of a disc-shaped substrate C1 having elasticity and surrounds the caster receiving hole C2. A mortar-shaped side wall C3 is annularly extended, a handle C4 is provided on one side of the substrate C1, and a delta-shaped opening C5 is provided in the opposite direction. A slit C6 is inserted into the substrate C1 and the side wall C3 so as to connect the handle C4 on a straight line. These are desirably formed by integral molding using, for example, rubber. Industrial applicability

 As described above, the home trolley according to the present invention is useful as a trolley for elderly people and women in ordinary households, and is particularly suitable for a case where the trolley is desired to have an intellectual property.

Claims

The scope of the claims 1. In a trolley with a structure in which moving wheels are attached to the back of the loading tray (A), the loading tray (A) has a considerable thickness and a small number of moving wheels in order to combine low height and aesthetics. A home trolley using three or more ball casters (B) and mounting the ball casters (B) in the receiving tray (A). 2. As the ball caster (B), a ball caster (B 3), a ball caster (B 1) containing the sphere (B 3), and a bearing ball (B 6) interposed therebetween. In B), at least one ring-shaped constriction (B2) protrudes from the cylinder (B1) along the outer periphery, and the sphere (B3) is covered with the elastic outer skin (B5). Or a solid trolley made of an elastic body: a household trolley according to claim 1, wherein a karuka ball case (B) is used. 3. At the approximate center of the elastic disk-shaped substrate (C 1), a small circular housing hole (C 2) is drilled, and a mortar is formed so as to surround the caster housing hole (C 2). The side wall (C 3) of the substrate (C 3) extends in an annular shape, a handle (C 4) is provided on one side of the substrate (C 1), and a delta-shaped opening (C 5) is provided in the opposite direction, and the opening (C 5) The ball caster has a structure in which a slit (C6) is inserted into the board (C1) and the side wall (C3) so that the housing hole (C2) and the handle (C4) are connected in a straight line. 3. The household trolley according to claim 1, wherein the detachable fixing tool (C) is used as a trolley fixing device.