JPS60962Y2 - caster - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a type of caster that is used by being fixed to the bottom surface of the base of a transportation trolley, and the direction of the heavy wheels can be freely changed.

There are several types of conventional casters with different structures, but two typical types will be explained below.

The first one consists of a □ plate-shaped mounting seat plate, a wheel mounting body that is fixed by engaging the upper corrugated ball holder on a protruding bar ring part,
a lower corrugated ball holder, a pin for fixing the lower corrugated ball holder and the mounting seat plate, an upper corrugated ball held by the mounting seat plate and the upper corrugated ball holder, and the wheel mounting body and the lower corrugated ball holder. and a lower corrugated board held by the casters.

However, such casters are difficult to transport due to the fact that the mounting seat plate and the lower corrugated ball holder are fixed with pins, and the upper corrugated ball holder is fixed to the barring part of the wheel mounting body. If the weight of the load loaded on the machine is large or if the path the casters travel on has undulations, a heavy load will be applied to the casters, and the load will be concentrated on the parts where the pins are fixed or engaged, resulting in breakage and Deformation occurs.

As a result, cracks and wear occur in the above-mentioned parts, making it impossible for the wheel mounting body to rotate smoothly and causing rattling noises in the casters.

In some cases, the impact may cause the upper and lower cardboard boxes to break and the repin to come off, causing the wheel mounting body to fall off.

The second one consists of a plate-shaped mounting seat plate, a wheel mounting body with an upper corrugated ball holder attached to the protruding bar ring, and a lower corrugated ball holder attached to the lower end of the wheel mounting body, which is fixed to the mounting plate from the upper end. an upper corrugated board held by the mounting seat plate and the upper corrugated ball holder, and a lower corrugated board held by the wheel attachment body and the lower corrugated ball holder of the cylindrical member. It is a caster that has been used.

However, in such a caster, the mounting seat plate and the cylindrical member are engaged and fixed together, and the upper corrugated ball holder is engaged and fixed to the burring part of the wheel attachment body. Similar to the case of 1, a heavy load is applied to the caster, and the load concentrates on the engagement part between the mounting seat plate and the cylindrical member and the engagement part between the upper corrugated board bracket and the burring part of the wheel attachment body, causing loosening and loosening. Deformation occurs.

In order to alleviate the drawbacks of these two typical types of casters, for example, the material of the holder is made thicker, stronger material is used, special hardening is applied, etc.
It is possible to consider methods such as welding the interlocking parts, but in either case, the number of parts is large and the cost is high in terms of workability, and the appearance is not good either. It was not possible to withstand heavy loads for a long period of time.

Therefore, in the past, Utility Model No. 55-50006 (Utility Application No. 53-
95328), in which a raceway surface 5 is formed on the lower surface of the inside of the seat 2, and a cylindrical portion 6 protruding downward is formed in the center. A leg body 9 is formed separately, in which a vertically opposing raceway surface 12 is formed on the upper surface of the upper end plate 10, a raceway surface 15 is further formed on the lower surface of the upper end plate 10, and a through hole 16 is bored in the center part. Then, the cylindrical part 6 is inserted into the through hole 16 with the rolling elements 4 and 14 interposed between the raceway surfaces 5 and 12, and the rolling elements 14 between the raceway surfaces 15 and 15, respectively, and the end edge of the cylindrical part 6 is pushed outward. The rolling elements 14 are expanded to
This is a free metal fitting (caster) for a wheel in which a raceway surface 18 is formed, and a leg body 9 is mounted and rotatably clamped by a body 1.

However, casters like this are not suitable for heavy loads, are not durable, and cannot be mounted on raceways where the edge of the cylindrical part expands outward due to use. Deformation etc. are likely to occur.

In other words, the installation is done on seat 1. If the cylindrical part and expanded raceway surface were to be made thick or made of a strong material, it would be impossible to fabricate them flexibly using a light press, etc. If we try to manufacture something relatively strong, it will have disadvantages such as poor workability and high cost.

The purpose of the present invention is to overcome the drawbacks of conventional casters as explained above.

That is, the first object of the present invention is to provide an improved caster which has an extremely simple structure and can sufficiently withstand heavy loads at a low cost.

The second purpose of the present invention is that even if the mounting seat plate that makes up the caster were to come off the ball receiving plate, the other parts, such as the wheel mounting body, upper corrugated board, and lower corrugated board, would be able to remain in place. An object of the present invention is to provide an improved caster that can be made less easily disassembled than a receiving plate.

A third object of the present invention is to provide an improved caster that can prevent rainwater from entering the ball receiving portion.

In order to achieve the above-mentioned object distantly, the present invention provides a mounting seat plate in which a mounting seat plate main body, a recessed portion, and a ball receiving plate holding portion are integrally formed, and a ball receiving portion at the upper end. The wheel mounting body has a wheel attached to the lower end, and the lower end has an upper corrugated ball receiving part in the intermediate part that hangs downward at one end, and the lower corrugated ball in the lower end continuous to this. a ball receiving plate integrally formed with a receiving portion; an upper corrugated ball held by the upper corrugated ball receiving portion of the ball receiving plate and the ball receiving portion of the wheel mounting body; a lower corrugated ball receiving portion of the ball receiving plate; A caster is provided which is formed from a ball receiving portion of a wheel mounting body and a lower corrugated board held by the ball receiving portion of the wheel mounting body.

In the above configuration, the mounting seat plate may integrally form a sealing portion at the lower end of the ball receiving plate holding portion.

In this case, due to the presence of the sealed portion, the reball receiving plate holding portion is reinforced and the ball receiving plate holding portion is made difficult to separate from the ball receiving plate.

In the conventional embodiment of the caster of the present invention shown in FIGS. 1 and 2, reference numeral 1 is a mounting seat plate, and the mounting seat plate 1 includes a mounting seat plate body 2, a recess 3, and a ball receiving plate. It is formed from a recessed portion 4.

↓There are four mounting holes 5 in the corners of the seat plate main body 2 with markings.
... is provided.

The recessed portion 3 is formed by recessing the inner end portion of the mounting seat plate main body portion 2 downward in an annular shape.

The ball receiving plate holding portion 4 is formed so as to be curved inwardly and downward continuously from the recessed portion 3, and is formed to contain a ball receiving plate 9, which will be described below.

Reference numeral 6 denotes a wheel mounting body, and the wheel mounting body 6 has a ball receiving portion 7 formed to curve upward at its upper end.
, and a wheel 8 is rotatably attached to the lower end thereof.

Reference numeral 9 denotes a ball receiving plate, and the ball receiving plate 9 has a rain guard part 10 hanging downward at one end thereof, and an upper corrugated ball receiving part 11 is connected to the intermediate part continuous to this. A lower corrugated board receiving portion 12 is integrally formed at the lower end.

13 is an upper corrugated ball, and the upper corrugated ball 13 is comprised of the upper corrugated ball receiving portion 11 of the ball receiving plate 9 and the wheel mounting body 6.
It is held by the ball receiving part 7.

14 is a lower hole, and the lower corrugated ball 14 is connected to the lower corrugated ball receiving portion 12 of the ball receiving plate 9 and the wheel mounting body 6.
It is held by the ball receiving part 7.

15 is a cylindrical portion of the mounting seat plate 1. According to the caster of the present invention constructed as described above, the mounting seat plate is constructed by integrally forming the mounting seat plate body portion, the recessed portion, and the pole receiving plate holding portion, and the pole of the mounting seat plate is By configuring the ball catch plate to be held in place by the catch plate holding part, it can sufficiently withstand heavy loads, and does not have any pin-fixed parts or biting parts unlike conventional products, which prevents loosening. There will be no rattling noise or the wheel mounting body falling off.

In addition, since the ball receiving plate that holds the upper corrugated board and the lower corrugated board is formed separately from the mounting seat plate, the wall thickness and material can be easily selected. Since there is no need to use special materials, it is easy to process and can be manufactured at low cost.

In particular, due to the presence of the cylindrical part 15 which is the middle part of the pole receiving plate holding part 4 of the mounting seat plate 1, there is no rattling between the mounting seat plate 1 and the ball receiving plate 9 even under heavy loads. It is robust.

Next, even if the mounting seat plate that makes up the caster were to come off the ball receiving plate, the other parts, such as the wheel mounting body, upper corrugated balls, and lower corrugated balls, would be securely held by the ball receiving plate. This prevents them from decomposing easily.

Furthermore, since a rain guard part that hangs downward is integrally formed at one end of the ball catch plate, it is possible to prevent rainwater from entering the water catch part, thereby increasing the durability of the caster. can be improved.

Furthermore, since the entire caster consists of a mounting seat plate, a wheel mounting body, a ball receiving plate, and an upper and lower corrugated board, the structure is extremely simple and the number of parts is small, which improves assembly work and reduces costs. Of course, it can be manufactured to

[Brief explanation of the drawing]

The drawings show an embodiment of the caster of the present invention, and FIG. 1 is a plan view thereof, and FIG. 2 is a sectional view taken along the line A--A in FIG. 1. In the figure, 1 is the mounting seat plate, 2 is the mounting seat plate main body, 3 is the recessed part, 4 is the pole receiving plate holding part, 5 is the mounting hole, 6 is the wheel mounting body, 7 is the ball receiving part, 8 is a wheel, 9 is a ball receiving plate, 10 is a rain protection part, 11 is an upper cardboard receiving part, 12 is a lower cardboard receiving part, 13 is an upper cardboard, 14 is a lower cardboard,
15 indicates a cylindrical portion.

Claims (1)

[Scope of Claim for Utility Model Registration] 1 Mounting seat plate □ A mounting seat plate integrally formed with a main body, a recessed part, and a ball receiving plate holding part, a ball receiving part at the upper end, and a wheel at the lower end. The attached wheel mounting body has a rain guard part that hangs downward at one end, and an upper corrugated ball receptacle is connected to this in the middle part, and a lower corrugated board receptacle is integrally connected to the lower end part that is continuous with this. The formed ball receiving plate, the upper corrugated ball held by the upper corrugated ball receiving part of the ball receiving plate and the ball receiving part of the wheel mounting body, the lower corrugated ball receiving part of the ball receiving plate and the wheel mounting body. A caster formed from a ball receiving part of the main body and a lower corrugated board held by the main body. 2. A caster as described in Claim 1 of the Utility Model Registration Claim, characterized in that the mounting seat plate has a sealing part integrally formed at the lower end of the ball receiving plate holding part.