KR101543952B1

KR101543952B1 - Roller

Info

Publication number: KR101543952B1
Application number: KR1020140028012A
Authority: KR
Inventors: 장혁수
Original assignee: 장혁수
Priority date: 2014-03-07
Filing date: 2014-03-07
Publication date: 2015-08-11

Abstract

The present invention relates to a caster, and more particularly, to a caster comprising: a body; A bearing installed at a lower portion of the body; A bracket installed at a lower portion of the bearing and coupled to the rotation axis of the wheel; And a guide shaft extending toward the guide so as to be guided by a guide formed on the bottom surface of the bracket coupled with the rotation axis of the wheel or the rotation shaft to control the running direction of the wheel.
Accordingly, when the body moves in a state where the guide shaft is inserted into a guide formed by combining at least one of linear, oblique and curved structures on the bottom surface, the guide shaft is guided along the guide path, By controlling the rotational axis of the wheel or the direction of the bracket coupled to the rotational axis, the wheels are always aligned autonomously toward the running direction even when the body or the wheel is straight or turning, Provides a castor with improved followability and stability.

Description

Castors {Roller}

The present invention relates to a caster, and more particularly, to a caster, in which a guide shaft is guided in a guide formed by combining at least one of a linear, oblique, And the direction of movement of the bracket coupled to the rotation axis of the wheel or the rotation axis of the wheel is controlled according to the traveling direction of the guide shaft so that the wheels are always aligned autonomously toward the running direction when the body or the wheel is straight or turning, Freedom is added and stability and follow-up to the guide are guaranteed.

Generally, casters have been used for opening and closing the cabin by sliding them along the guide rails and moving them by being coupled to the lower ends of the windows, doors, and the like.

The above-mentioned conventional caster is mostly inserted into the guide rail of the '┕┛' shape and slid, or put on the guide rail of the '┌┐' type, and then moved to slide.

The guide rail having the above structure has a structure in which a window frame or a frame is protruded from a floor surface and then a window or a door to which the casters are coupled is coupled. And gives inconvenience to the walking of

In addition, since the window or door is generally formed in a straight line, the design concept is obstructed by the stereotype that the straight line should be used as a basis, and the reason why the design is mainstream is that the guide rail is curved or oblique The design of the guide rail can not be avoided because there is a concern that the caster may be detached from the guide rail and thus the product may be damaged or the user may be damaged.

In addition, the general casters are configured to be freely rotatable by 360 °, which is advantageous in that the turning can be freely performed in the turning direction in the traveling direction. However, when the forward traveling and the backward traveling are repeatedly performed according to the traveling direction, There is a problem that frictional force with the surface is increased and wear is seriously caused thereby.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a caster which can freely turn by a curve, And the guide may be protruded from the bottom surface to allow the guide to be formed on the side surface. When the caster turns in the forward direction, it is possible to prevent the user from walking freely When the vehicle travels in the forward direction and then travels in the reverse direction, the wheels are allowed to travel in the forward direction as they are without rotating at 180 °, thereby minimizing friction and wear of the wheels. have.

The above-mentioned object is achieved by a body (210); A bearing 230 installed at a lower portion of the body 210; A bracket 240 installed at a lower portion of the bearing 230 and coupled to the rotation shaft 222 of the wheel 220; The rotation of the wheel 220 may be controlled by controlling the driving direction of the wheel 220 such that the rotation axis 222 of the wheel 220 or the bracket 240 coupled to the rotation axis 222 is inserted into the guide 110 formed on the bottom surface 100, And a guide shaft (250) extending toward the guide (110).

Further, it is preferable to further include a guide bearing 252 which is installed on the guide shaft 250.

The guide shaft 250 may further include at least one guide protrusion 254 protruding from an outer surface of the guide shaft 250 or an inner surface of the guide 110.

According to the present invention, a guide shaft of a caster inserted in a guide is guided along a traveling direction and a pivoting direction by a path direction of a guide formed on a bottom surface, thereby automatically aligning the body and wheels from a traveling direction to a straight line, So that it is possible to improve the followability of the caster with respect to the guide and ensure the stability.

In addition, due to the above-described effect, a free and unique creative design can be applied when designing the inside of a building.

1 is a side view showing the structure of a caster according to the present invention;
FIGS. 2A, 2B, and 2C are views illustrating an operation state of a caster according to the present invention. FIG.

The construction of the present invention will be described below with reference to FIGS. 1 to 2C.

1, a body 210 having a predetermined shape is provided, and a bearing 230 is provided below the body 210 to allow horizontal rotation.

A bracket 240 is provided under the bearing 230 to rotate horizontally as a separate entity from the body 210.

In addition, a wheel 220 supporting the vertical load transmitted from the upper part of the body 210 and rotating in a rolling contact with the floor surface 100 is installed on the lower or both side surfaces of the bracket 240.

1, the wheel 220 may be coupled to the bracket 240 in a structure in which the rotation axis 222 of the wheel 220 is coupled to a lower portion of the bracket 240, A rotation shaft 222 may be installed on both sides of the shaft 222 and a wheel 220 may be installed on the rotation shaft 222.

1, a body 210 coupled to a lower portion of a window 102, a door or a truck, a bearing 230 installed at a lower portion of the body 210, And a wheel 220 mounted on the bracket 240 so as to be rotatable.

A guide shaft 250 is coupled to the bracket 240. The guide shaft 250 is inserted into a guide 110 formed on the bottom surface 100 and extending toward the bottom surface 100 .

Here, the guide 110 formed in the shape of a groove on the bottom surface 100 is only one embodiment, and may be formed as a groove on the bottom surface as shown in the figure, And the guide 110 may be formed in the form of a groove or a projection on the side surface thereof and may be formed in various shapes. Therefore, the present invention is not limited thereto and can be variously changed and changed.

Hereinafter, the guide 110 formed in a groove shape on the bottom surface 100 is described as an embodiment so that the operation of the present invention can be smoothly performed, but the right of the present invention is not limited thereto.

Since the guide shaft 250 directly controls the direction of the rotation axis 222 of the wheel 220, the guide shaft 250 can be coupled to the rotation axis 222 or to the bracket 240 integrally coupled to the rotation axis 222 And extends toward the guide 110 in the coupled state.

The guide shaft 250 may be downwardly bent in a bent shape or may be inserted into the guide 110 by extending downward in a diagonal shape.

Since the guide shaft 250 directly affects the rotation axis 222 of the wheel 220 to control the running direction of the wheel 220, the shape and the shape of the guide shaft 250 are limited And can be changed and adopted variously.

That is, in order to control the direction of the wheel 220, the direction of the rotation axis 222, which serves as a key in the direction of the wheel 220, should be aligned perpendicular to the direction of travel, The guide shaft 250 may be formed directly on the bracket 240 and the direction of the rotation shaft 222 may be controlled so that the direction of the guide shaft 250 may be controlled simultaneously. 240 so that the direction of the rotation shaft 222 and the wheel 220 can be controlled.

When the guide shaft 250 is inserted into the guide 110, the guide shaft 250 is guided along the path of the guide 110. In this state, when the guide shaft 250 is inserted into the guide groove, In order for the guide shaft 250 to travel straight, the bracket 240 coupled with the guide shaft 250 must be turned or turned to a position where the rotation axis 222 of the wheel 220 is orthogonal to the running direction. 220 are naturally linearly aligned along the running direction.

That is, when the body 210 travels in a linear direction and then turns or changes its direction, the bracket 240 and the wheel 220 coupled to the lower portion of the bearing 230 are linearly aligned along the running direction The rotation axis 222 of the wheel 220 is aligned to be orthogonal to the running direction, and the body 210 is maintained in a fixed state.

As shown in FIGS. 2A, 2B, and 2C, a guide bearing 252 is installed on the guide shaft 250 so that the inner surface of the guide 110 is in rolling contact with the guide bearing 252, So that the guide shaft 250 inserted into the guide groove 110 can be smoothly driven.

1, in order to minimize the friction area between the guide shaft 250 and the guide 110, a guide 110 is provided to guide the guide shaft 250, At least one guide protrusion 254 is protruded and formed on the inner surface of the guide shaft 250 so that the guide protrusion 254 formed on the inner surface of the guide 110 contacts the outer surface of the guide shaft 250 minimally, It is preferable that at least one guide protrusion 254 is formed on the outer surface of the guide protrusion 254 so that the guide protrusion 254 and the guide protrusion 254 are allowed to travel in a state where the inner surface of the guide protrusion 254 is minimally contacted.

The operation state of the present invention constructed as described above will be described with reference to FIGS. 2A, 2B, and 2C.

The guide shaft 250 may be formed on one of the bracket 240 and the rotary shaft 222 or may be formed on the rotary shaft 222 of the wheel 220 in FIGS. Let's take an example.

As described above, the guide shaft 250 formed on the rotation axis 222 of the wheel 220 is connected to the rotation axis 222 as shown in FIG. , Or may be inserted into the guide 110 by being extended downwardly in the shape of a diagonal line as described above and extended to any position of the lower portion of the rotary shaft 222, , But the present invention is not limited thereto.

The body 210 of the caster 200 is coupled to the lower portion of the window 102, the door, the cart, etc. Since the guide shaft 250 of the caster 200 coupled to the lower portion of the window 102 is inserted into the guide 110 when the user 102 or the user externally moves the guide 102, .

2B, when the guide shaft 250 is guided by the guide 110 and the path of the guide 110 is rotated as shown in FIG. 2B, the guide shaft 250 contacts the inner surface of the guide 110 The resistance force generated at this time is transmitted to the rotating shaft 222 and the rotating shaft 222 is coupled to the bracket 240 and is eventually transferred to the bracket 240. [

The resistance force transmitted to the bracket 240 is transmitted to the bracket 240 together with the bearing 230 because the bracket 240 is coupled to the lower portion of the bearing 230 to rotate horizontally as a separate entity from the body 210. [ ) Is resolved as it rotates while adapting to the resistive force.

Accordingly, as the bracket 240 rotates together with the bearing 230, the bracket 240 is aligned along the running direction, and the rotation axis 222 coupled to the bracket 240 is aligned at a position orthogonal to the running direction , So that the wheels 220 are aligned in a linear fashion with respect to the running direction so that a natural rolling of the rolls can be achieved.

As a result, the wheel 220 coupled to the bracket 240 can be always linearly aligned with the path of the guide 110 by rotating the bracket 240.

The guide shaft 250 of the caster 200 according to the present invention may be a directional key for allowing the wheel 220 to adapt to the path of the guide 110 when traveling along the path of the guide 110 Along with other important features.

The caster 200 according to the present invention not only allows the guide shaft 250 to control the direction of the wheel 220 in one direction but also moves the wheel 220 in the other direction as shown in FIG. It is possible to prevent the outer surface of the wheel 220 from being worn out by controlling the direction so that the body 210 can be rotated in the other direction while being linearly aligned with the path without being rotated by 180 degrees even if the running direction is changed. . &Lt; / RTI >

100: bottom surface 102:
110: Guide 200: Caster
210: Body 220: Wheel
222: rotating shaft 230: bearing
240: Bracket 250: Guide shaft
252: guide bearing 254: guide projection
260: Bracket

Claims

A bearing 230 installed at a lower portion of the body 210 and a bracket 240 installed at a lower portion of the bearing 230 and coupled to the rotation axis 222 of the wheel 220, In the casters comprising,
The rotation of the wheel 220 may be guided by the rotation axis 222 of the wheel 220 or the guide 210 formed on the bottom surface 100 of the bracket 240 coupled to the rotation axis 222, And a guide shaft (250) extending toward the guide (110).

The method according to claim 1,
Further comprising a guide bearing (252) axially mounted on the guide shaft (250).

The method according to claim 1,
Further comprising at least one guide protrusion (254) protruding from an outer surface of the guide shaft (250) or an inner surface of the guide (110).