KR102188056B1 - Caster with increased moving stability - Google Patents

Abstract

The object of the present invention is to provide a caster with improved movement stability, the configuration of the present invention is a base body 20; A rotation body 30 coupled to the base body 20; A roller 40 coupled to the rotation body 30; and configured to change the position of the rotation line of the roller 40 by rotating the rotation body 30 with respect to the base body 20 In addition, the rotation body 30 is configured to rotate with respect to the base body 20 while being disposed on the bottom surface of the base body 20 to change the rotation line of the roller 40. .

Description

Caster with increased moving stability}

The present invention relates to a caster with improved movement stability, and more particularly, to a caster with improved movement stability of a new configuration specially designed so that an article user can move an article straight to a desired position.

In general, casters are mounted on various products such as chair legs, beds, medical devices, and mobile furniture, and are mounted on various products for the purpose of improving straightness when moving the product and facilitating movement in a desired direction. do. Casters are manufactured to have sufficient structural strength to withstand loads while smooth rolling motion even under heavy loads as the wheels rotate smoothly.

In addition, various types of casters are used, such as the caster connected to the product is configured to be freely rotated in the vertical axis direction, and some casters have a separate fixing device or a stop device to control the rolling movement of the wheel.

However, the existing caster has a problem that is insufficient to satisfy the convenience of moving items such as chairs. Since casters installed on items such as chairs move in various directions without direction different from the user's intention when moving items, there is inconvenience and relatively high force when moving items such as chairs using casters. There are several problems. When moving an item such as a chair, it is easy to move the item in the direction the user wants to move, so the user wants the item to move in a straight line in the desired direction, but the existing casters roll anywhere. There is a problem that the article cannot be properly moved in the desired direction because it is operated so as to be operated. In particular, if the article is moved anywhere in a narrow space, it is more difficult to move the article properly.

On the other hand, after moving items such as chairs to a desired place, it is often good to stay stable at the location after the items were moved.In the past, items such as chairs should be moved and then the items stay in place stably. There is a problem that cannot be found.

In addition, there is a problem in that the structure of the caster is complicated and the cost is increased because there is a case where a separate complex fixing device such as a brake device is required in order to fix an article such as a chair after moving it.

Korean Patent Registration No. 10-1424398 (registered on July 22, 2014) Korean Patent Registration No. 10-1391219 (registered on April 25, 2014)

The present invention was developed to solve the above-described problem, and an object of the present invention is to allow the product user to move the product straight to the desired position, and to stably stay in the position after the product movement. It is intended to provide a caster with improved movement stability in a new configuration.

According to the present invention for solving the above problems, the base body; A rotation body coupled to the base body; There is provided a caster with improved movement stability, characterized in that it comprises a; roller coupled to the rotation body.

It characterized in that it is configured to change the position of the rotation line of the roller by rotating the rotation body with respect to the base body.

The rotation body may be configured to be rotatable with respect to the base body while being disposed on a bottom surface of the base body.

A rotation stone piece coupling groove is provided on the bottom surface of the base body, and a rotation stone piece is provided on the upper surface of the rotation body, so that the rotation body is disposed on the bottom surface of the base body so that the rotation stone piece is fitted into the rotation stone piece coupling groove. It characterized in that it is configured.

The rotation body is provided with a roller coupling hole communicated to a bottom surface, and the roller is rotatably coupled to the roller coupling hole.

The roller is configured in a wheel shape having a circular cross section, and the roller engaging hole has a straight hole shape, and the roller is rotatably coupled to the roller engaging hole of the rotation body.

A shaft is coupled to the center of the roller, a shaft coupling hole is provided in a direction perpendicular to the roller coupling hole in the rotation body, and the shaft of the roller center is coupled to the shaft coupling hole. .

The shaft coupled to the central portion of the roller is characterized in that it is pressed into the shaft coupling hole inside the rotation body.

The shaft coupling hole is characterized in that communication from the inside of the rotation body to the bottom surface of the rotation body.

It characterized in that the central portion of the roller is coupled to the shaft so as to be relatively rotatable.

A shaft hole communicating on both sides is provided in the center of the roller, and the diameter of the shaft hole is larger than the outer diameter of the shaft, so that the roller is rotatably coupled to the outer peripheral surface of the shaft.

The shaft is made of metal, and the roller is made of plastic.

The base body is coupled to the bottom surface of the article, and a plurality of the base body, the rotation body, and the roller are coupled to the bottom surface of the article.

It characterized in that the rotation body and some of the rollers among the plurality of rotation bodies and the rollers are configured to rotate in a direction intersecting with other rotation bodies and rollers, or to rotate side by side in the same direction.

Some rotation bodies and rollers among the plurality of rotation bodies and the rollers are rotated in a direction intersecting with other rotation bodies and rollers to prevent the flow of the article, and make the plurality of rotation bodies and rollers all side by side in the same direction. It characterized in that it is configured to guide the movement of the article by rotating.

A bolt fixing groove is provided on the upper surface of the base body, and the bolt fixing groove is configured to press-fit the head of the bolt connected to the article.

The base body may further include a display unit that displays rotational states of the rotation body and the roller.

The display unit may include a reference line provided on the base body and an angle display unit provided on the rotation body.

It is characterized in that the angle setter for firmly maintaining the rotation angle of the rotation body rotating relative to the base body is further provided.

The angle setter is characterized in that it includes a position setting groove provided on a bottom surface of the base body and an upper surface of the rotation body, a position setting ball, and a position elastic body for touching the position setting ball.

A plurality of casters of the present invention are mounted on an article, and among the plurality of rotation bodies and the rollers, some rotation bodies and rollers are rotated in a direction intersecting the other rotation bodies and rollers to prevent the flow of the article, and the plurality of It is configured to guide the movement of the article by rotating both the rotation body and the roller in the same direction, so that the article can be made upright in a directional position so that the article does not move in various directions when moving the article. Therefore, there is no inconvenience when moving items such as chairs, and it solves various problems, such as a relatively large amount of force. In the present invention, when the rotation body and the rollers coupled to the base body are rotated and adjusted, the article does not move and is stably fixed, and when all the rollers of the caster of the present invention are turned to face the same direction, the article moves in a desired direction. Therefore, it is easy to do when moving goods.

On the other hand, the above effects correspond to the main effects of the present invention, the present invention has a number of useful effects in addition to the above effects, it will be understood that the features of the present invention are not limited only by the above effects.

1 is a side view of a base body, which is a configuration of a caster with improved movement stability according to the present invention
2 is a bottom view of a rotation body, which is a configuration of a caster with improved movement stability according to the present invention
Figure 3 is a side view of Figure 2
Figure 4 is a plan view of Figure 2
5 is a front view of a roller, which is a configuration of a caster with improved movement stability according to the present invention
Figure 6 is a side view of Figure 5
Figure 7 is a bottom view showing a state in which the roller is coupled to the rotation body of the caster with improved movement stability according to the present invention
8 is a side view of a caster with improved movement stability according to the present invention
9 is an exploded bottom perspective view showing a main part of a caster with improved movement stability according to the present invention
10 is a bottom perspective view of a caster with improved movement stability according to the present invention
11 is a perspective view of a caster with improved movement stability according to the present invention
12 is a perspective view showing a state in which a caster with improved movement stability according to the present invention is mounted on an article
13 is a plan view schematically showing a state in which an article is converted to a moving mode in which movement is possible by a caster with improved movement stability according to the present invention
14 is a plan view schematically showing a state in which an article is switched to a stay mode in which an article is stopped by a caster having improved movement stability according to the present invention
15 is a side view showing an embodiment including a display unit as another embodiment of a caster with improved movement stability according to the present invention
FIG. 16 is a side view showing a state in which the rotation body is rotated in one direction with respect to the base body in the caster shown in FIG. 15 to rotate the roller in a direction perpendicular to the roller shown in FIG. 15
FIG. 17 is a side view showing a state in which the rotation body is rotated in a direction perpendicular to the roller shown in FIG. 15 by rotating the rotation body in the other direction with respect to the base body in the caster shown in FIG. 15
18 is a bottom perspective view showing an exploded state of a main part of another embodiment of a caster with improved movement stability according to the present invention
19 is a side view schematically showing the inner structure of the caster shown in FIG. 18

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Objects, features, and advantages of the present invention will be more easily understood by referring to the accompanying drawings and the following detailed description. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the subject matter of the present invention, a detailed description thereof will be omitted.

In addition, in describing the constituent elements of the present invention, terms such as first, second, A, B, (a), (b) may be used. These terms are only used to distinguish the component from other components, and the nature, order, or order of the component is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected or connected to that other component, but another component between each component It should be understood that may be “connected”, “coupled” or “connected”.

Referring to the drawings, a caster with improved movement stability according to the present invention includes a base body 20, a rotation body 30, and a roller 40. The present invention is configured to change the position of the rotation line of the roller 40 by rotating the rotation body 30 relative to the base body 20.

The base body 20 is configured in a circular block shape. A rim portion 21 is provided on the circumference of the bottom of the base body 20. The rim portion 21 has a closed loop shape. Since the base body 20 is in a circular block shape, the rim portion 21 is configured in a circular closed loop shape. A rotation body accommodating groove 23 capable of accommodating the rotation body 30 therein is formed in the base body 20 by the rim portion 21. The rotation body 30 enters and is received in the rotation body receiving groove 23.

A rotation protrusion coupling groove 22 is provided on the bottom of the base body 20. A rotation protrusion coupling groove 22 is provided in the center of the bottom of the base body 20. The rotation stone piece coupling groove 22 has a circular groove shape. The rotation protrusion coupling groove 22 communicates with the bottom surface of the base body 20. In addition, a bolt fixing groove 24 is provided on the upper surface of the base body 20. A bolt fixing groove 24 is provided in the center of the upper surface of the base body 20. The bolt fixing groove 24 is configured such that the head portion 27 of the bolt 26 connected to the article 2 such as a chair leg or a chest of drawers is press-fitted. When the head portion 27 of the bolt 26 is a hexagonal head portion 27 with six corners, the radius from the center of the bolt 26 to the corner of the head portion 27 becomes the longest maximum radius. , Compared to the maximum radius of the head portion 27, the radius of the bolt fixing groove 24 is smaller, so that each corner of the head portion 27 is of the bolt fixing groove 24 of the base body 20. Since it is in close contact with the inner circumferential surface, the head portion 27 of the bolt 26 may be configured to be press-fit into the bolt fixing groove 24 of the base body 20. The bolt 26 has a structure protruding upward from the upper end of the base body 20.

The rotation body 30 is coupled to the base body 20. The rotation body 30 is configured in a circular block shape. A portion of the lower side of the rotation body 30 is composed of a large-diameter rotation body portion 34. Compared to the outer diameter of the rotation body 30, the outer diameter of the large-diameter rotation body portion 34 is configured to be larger. A stepped portion is provided between the rotation body 30 and the large-diameter rotation body portion 34. A rotation protrusion 32 is provided on the upper surface of the rotation body 30. The rotation protrusion 32 is configured in a protrusion shape having a circular cross section. A shaft coupling hole 38 is provided with a roller coupling hole 36 extending a predetermined depth from the bottom of the large-diameter rotation body portion 34 toward the inside of the rotation body 30.

The rotation protrusion 32 provided on the upper surface of the rotation body 30 is coupled to the rotation protrusion coupling groove 22 provided on the bottom of the base body 20. The diameter of the rotation stone piece 32 is larger than the diameter of the rotation stone piece coupling groove 22 of the base body 20, so that the rotation stone piece 32 is in the rotation stone piece coupling groove 22 of the base body 20. It is forcibly fitted. At this time, although the rotation stone piece 32 of the rotation body 30 is forcibly fitted to the rotation stone piece 32 of the base body 20, the rotation stone piece 32 is forcibly fitted so that the rotation stone piece 32 can be rotated in the rotation stone piece 32 ( About forcefully). The rotation body 30 is disposed on the bottom of the base body 20 so that the rotation protrusion 32 is fitted into the rotation protrusion coupling groove 22. The rotation body 30 is coupled to the base body 20 so that it can be rotated relative to the base body 20 by the rotation protrusion 32 and the rotation protrusion coupling groove 22. In a state in which the rotation body 30 is rotatably coupled to the bottom surface of the base body 20, the rim portion 21 of the base body 20 has a structure surrounding the outer circumferential surface of the rotation body 30, and is rotated with a large diameter. The stepped portion between the body portion 34 and the rotation body 30 is configured to be disposed at a position facing the lower end of the rim portion 21 of the base body 20.

A roller coupling hole 36 is provided inside the rotation body 30. The roller coupling hole 36 communicates with the bottom surface of the rotation body 30. The roller coupling hole 36 is configured in a straight hole shape when viewed from the bottom of the rotation body 30. In addition, a shaft coupling hole 38 is provided inside the rotation body 30. The shaft coupling hole 38 is disposed in a direction orthogonal to the roller coupling hole 36. When viewed from the bottom of the rotation body 30, the roller coupling hole 36 and the shaft coupling hole 38 are arranged in a crisscross shape. The depth of the roller coupling hole 36 is configured to be deeper than the depth of the shaft coupling hole 38.

The roller 40 is configured in a wheel shape having a circular cross section. When the roller 40 is viewed from the front, the roller 40 is straight, and when the roller 40 is viewed from the side, the roller 40 is circular. When the roller 40 is viewed in a side cross-section, the roller 40 is configured in a wheel shape having a circular cross-section.

A shaft hole 42 is provided inside the roller 40. The shaft hole 42 is provided in the center of the roller 40. The shaft hole 42 communicates with both sides of the roller 40. The central portion of the roller 40 is coupled to the shaft 44 so as to be relatively rotatable. Since the diameter of the shaft hole 42 is larger than the outer diameter of the shaft 44, the roller 40 is rotatably coupled to the outer peripheral surface of the shaft 44. For example, if the roller 40 is 8.1 mm, the diameter of the shaft 44 is 8 mm. Therefore, when the shaft hole 42 of the roller 40 is coupled to the outer peripheral surface of the shaft 44, the roller 40 is rotatably coupled to the outer peripheral surface of the shaft 44. At this time, the roller 40 is made of a plastic material, and the shaft 44 is made of a metal material. Of course, the roller 40 and the shaft 44 may be composed of a metal material.

The roller coupling hole 36 inside the rotation body 30 is formed in a straight hole shape, and the roller 40 is configured in a straight shape when viewed from the front, so that the roller 40 is inside the rotation body 30. It is received in the roller coupling hole 36 and is rotatably coupled in the roller coupling hole 36.

A shaft 44 is coupled to the center of the roller 40, and a shaft coupling hole 38 is provided in a direction orthogonal to the roller coupling hole 36 in the rotation body 30, and the shaft coupling The shaft 44 coupled to the shaft hole 42 at the center of the roller 40 is coupled to the hole 38. At this time, the shaft 44 coupled to the center of the roller 40 is press-fit into the shaft coupling hole 38 inside the rotation body 30. Since the outer diameter of the shaft 44 is larger than the diameter of the shaft coupling hole 38 of the rotation body 30, the shaft 44 can be press-fit into the shaft coupling hole 38 of the rotation body 30. . When the shaft 44 is pressed into the shaft coupling hole 38 of the rotation body 30, the shaft 44 and the roller 40 may be coupled so as not to fall out of the roller coupling hole 36 inside the rotation body 30. . At this time, the depth of the shaft coupling hole 38 is configured to be less than the depth of the roller coupling hole 36, so that the upper end of the shaft coupling hole 38 is provided with a shaft 44 supporting step. Therefore, since the shaft 44 is caught and supported by the support step of the shaft 44, the outer circumferential surface of the roller 40 does not contact the upper ceiling wall of the roller coupling hole 36 inside the rotation body 30, and is spaced a certain distance apart. Is placed as. Since the outer circumferential surface of the roller 40 is spaced a certain distance from the upper ceiling wall of the roller coupling hole 36 inside the rotation body 30, the outer circumferential surface of the roller 40 contacts the rotation body 30 and the roller 40 is It is prevented from not working properly. When the roller 40 is coupled to the roller coupling hole 36 inside the rotation body 30, a part of the roller 40 is configured to protrude more than the bottom of the rotation body 30, and the roller 40 In a state in which the base body 20 is coupled to the bottom surface of the article 2 such as a chair leg or a chest of drawers, the outer circumferential surface of the roller 40 may contact the ground.

The rotation body 30 is configured to be rotatable with respect to the base body 20 while being disposed on the bottom surface of the base body 20. The rotation protrusion 32 provided on the upper end of the rotation body 30 is rotatably coupled to the rotation protrusion coupling groove 22 provided on the bottom of the base body 20. That is, a rotation protrusion coupling groove 22 is provided on the bottom of the base body 20, and a rotation protrusion 32 is provided on the upper surface of the rotation body 30, so that the rotation body 30 It is disposed on the bottom of 20) and configured to fit the rotation stone piece 32 into the rotation stone piece coupling groove 22. The rotation body 30 may be rotated based on the base body 20. When the rotation body 30 is rotated relative to the base body 20, the rotation protrusion 32 of the rotation body 30 rotates in the rotation protrusion coupling groove 22 of the base body 20.

It is configured to change the position of the rotation line of the roller 40 by rotating the rotation body 30 with respect to the base body 20. That is, the line on which the roller 40 rotates relative to the shaft 44 is a rotation line. When the rotation body 30 is rotated at a certain angle with respect to the base body 20, the rotation line of the roller 40 It changes. Assuming that there is a zero reference line of the base body 20, the rotation line of the roller 40 coupled to the rotation body 30 is disposed on the same line as the zero reference line of the base body 20. The position of the rotation line of) is unchanged. Meanwhile, when the rotation body 30 is rotated with respect to the base body 20 and the rotation line of the roller 40 crosses with respect to the zero reference line of the base body 20, the rotation of the roller 40 The position of the line has changed. For example, when the rotation body 30 is rotated at an angle of 90° with respect to the zero reference line of the base body 20, the rotation line of the roller 40 is in a direction orthogonal to the zero reference line of the base body 20. The position is changed. When the rotation body 30 is rotated at a 45° angle with respect to the zero reference line of the base body 20, the rotation line of the roller 40 is changed at an angle of 45° with respect to the zero reference line of the base body 20 Becomes. The rotation body 30 may be rotated so that the rotation line of the roller 40 crosses the zero reference line of the base body 20.

The base body 20 is coupled to the bottom surface of the article 2, and the base body 20, the rotation body 30, and the roller 40 are coupled to the bottom surface of the object in plural. In the drawing, it is shown that the four base bodies 20, the rotation body 30, and the rollers 40 are coupled to the front, rear, left and right four places of the article 2.

According to the caster having improved movement stability according to the present invention having the above configuration, some of the rotation bodies 30 and the rollers 40 among the plurality of rotation bodies 30 and the rollers 40 are different from the rotation body 30 And it is configured to rotate in a direction crossing the roller 40 or to rotate side by side in the same direction. The article (2) by rotating some of the rotation bodies (30) and rollers (40) of the plurality of rotation bodies (30) and rollers (40) in a direction crossing the other rotation bodies (30) and rollers (40). It is configured to prevent the flow of, and guide the movement of the article 2 by rotating the plurality of rotation bodies 30 and the rollers 40 in parallel in the same direction. The caster having improved movement stability of the present invention can be switched to a stay mode in which the article 2 is fixed to a desired position and a moving mode in which the article 2 is moved so as to have straightness.

<Stay Mode>

In the stay mode of the article 2, among the plurality of casters of the present invention mounted on the article 2, the rotation body 30 and the roller 40 of some casters are rotated, and the rotation body 30 and the roller ( 40) is left unrotated so that the rotation line of some of the rollers 40 is arranged in a direction intersecting (especially orthogonal) with the rotation line of the other roller 40. As described above, assuming that there is a zero reference line of the base body 20, the rotation body 30 of some casters among the plurality of casters coupled to the article 2 is rotated with respect to the base body 20 While the rotation line of the roller 40 is disposed at an intersection with respect to the zero reference line of (20), the rotation body 30 of the other caster is not rotated with respect to the base body 20 but is left thereto so that the base body ( The rotation line of the roller 40 remains at the zero reference line of 20). That is, among the rollers 40 of a plurality of casters mounted on the article 2, the rotational body 30 of some of the casters and the rotational body 30 of some of the casters so that the rotational line of some of the rollers 40 crosses the rotational line of the rollers 40 of other casters. It is to return the roller 40. Preferably, the rotation body 30 and the roller 40 of some casters are arranged so that the rotation line of the roller 40 of some of the casters is disposed at a position orthogonal to the rotation line of the roller 40 of another caster. Return. When the rotation body 30 is rotated at an angle of 90° with respect to the zero reference line of the base body 20, the rotation line of the roller 40 is changed in a direction orthogonal to the zero reference line of the base body 20 Becomes. In the drawing, among the casters of the present invention mounted on the article 2, the rotation lines of the rollers 40 of the two casters are rotated in a direction perpendicular to the rotation lines of the rollers 40 of the other two casters. .

As described above, among the rollers 40 of a plurality of casters mounted on the article 2, the rotational body 30 of some of the casters so that the rotational line of some of the rollers 40 crosses the rotational line of the rollers 40 of other casters. ) And the roller 40, even if the roller 40 of the other caster tries to rotate on the ground, the roller 40 of the part of the caster catches the action that the roller 40 of the other caster tries to rotate. Since it functions as a stop, the article 2 does not flow at a desired position and remains stable.

<Moving Mode>

In the moving mode of the article 2, unlike the stay mode of the article 2, the rotation lines of the rollers 40 of the plurality of casters of the present invention mounted on the article 2 are rotated to be parallel. In the stay mode, the rotation line of the roller 40 of some casters, which turned in a direction intersecting the rotation line of the roller 40 of the other caster (especially, in a direction perpendicular to), is the rotation line of the roller 40 of another caster The rotation body 30 and the roller 40 of some casters are rotated to be parallel with. As described above, assuming that there is a zero reference line of the base body 20, the rotation line of all the rollers 40 of the plurality of casters coupled to the article 2 is parallel to the zero reference line of all the base bodies 20 To be placed. The rotation lines of the rollers 40 of all casters are arranged parallel to the zero reference line of the base body 20. In the drawing, a state in which the rotation lines of the four rollers 40 of the four casters of the present invention mounted on the article 2 are arranged side by side is shown.

As described above, when the rotation lines of all the rollers 40 of the plurality of casters mounted on the article 2 are arranged side by side, the rollers 40 of all the casters mounted on the article 2 may have straightness in the same direction. Since it rotates on the ground, the article 2 does not flow back and forth and moves in a desired direction so as to have straightness.

Therefore, the caster with improved movement stability of the present invention can make the article 2 upright in a directional position so that the article 2 does not move in various directions when the article 2 is moved. It solves various problems such as no inconvenience when moving items 2 such as chairs, and relatively high power. When moving an article 2 such as a chair, the article 2 must be moved straight in the direction the user wants to move, but the caster of the present invention is not operated to roll anywhere. It can be moved to have a good straightness in the desired direction. In particular, if the article 2 is moved anywhere in a narrow space, it is more difficult to properly move the article 2, but the present invention can move the article 2 so as to have a straightness, so that the article 2 in a particularly narrow space Better when you want to move.

In addition, after moving the article 2 such as a chair to a desired place, it is often good to stay stable at the position after the article 2 has been moved. Next, by simply turning the rotation line of some of the rollers 40 in a direction that intersects the rotation line of the other rollers 40 (preferably, orthogonal), the article 2 can stably stay in place. Has an effect.

In addition, in the present invention, since a separate complicated fixing device such as a brake device is not required to fix the article 2 such as a chair after moving, there is no problem of complicating the structure and an increase in cost.

On the other hand, the present invention further includes a display unit 50 for displaying the rotational state of the rotation body 30 and the roller 40 in the base body 20, and the display unit 50 is provided on the base body 20. It includes a reference line 52 and a rotation angle indicator 54 provided on the rotation body 30.

The reference line 52 is provided on the outer surface of the base body 20. The reference line 52 may be displayed as a dark line on the outer surface of the base body 20 or as a concave groove on the base body 20. The rotation angle indicator 54 may be an angle indicator displayed on the outer surface of the rotation body 30. The rotation angle indicator 54 may include an angle indicator in a range such as 0°, 90°, and -90°. The rotation angle indicator 54 may also include angle indicators indicated by 45° and -45°.

In a state in which a plurality of casters of the present invention are mounted on the article 2, the user can turn the rotation body 30 and the roller 40 relative to the base body 20 while looking at the display unit 50, It is easier to switch between the stay mode and the moving mode of the article 2 by using the caster of the invention. The user can more easily recognize the stay mode and the moving mode of the article 2 by the display unit 50.

When a plurality of casters of the present invention are mounted on the article 2 and the rotation angle indicator 54 of the rotation body 30 is aligned with the reference line 52 of the base body 20 of all casters, (2) By arranging the rotation lines of all the rollers 40 of the casters mounted in parallel with each other, it is easier for the user to know that the caster of the present invention has become a moving mode that can move the article 2 to have straightness. I can set it up.

The rotation angle indicator 54 indicated by 45° or 90° of the rotation body 30 on the reference line 52 of the base body 20 of some casters in a state in which a plurality of casters of the present invention are mounted on the article 2 On the other hand, if the rotation angle indicator 54 of the rotation body 30 is aligned with the reference line 52 of the base body 20 of the other caster and the reference line 52 of the base body 20, the rotation angle indicator 54 of the rotation body 30 is aligned. It can be more easily noticed that the rotation line of the roller 40 of some casters of the present invention has been switched to the stay mode arranged to intersect in the direction of 45° or 90° with respect to the rotation line of the roller 40 of the other casters. At this time, the rotation angle indicated by -45˚ or -90˚ of the rotation body 30 is displayed on the reference line 52 of the base body 20 of some casters in a state where a plurality of casters of the present invention are mounted on the article 2 While aligning the ruler 54, the rotation angle indicator 54 indicated by 0° of the rotation body 30 to the reference line 52 of the base body 20 of the other caster and the reference line 52 of the base body 20 ), the rotation line of the rollers 40 of some casters of the present invention is switched to the stay mode arranged to cross the rotation line of the rollers 40 of the other casters in the direction of -45° or -90°. It is easy to notice. Since the stay mode and the moving mode of the article 2 are easily recognized by the display unit 50, it is possible to more easily switch between the stay mode and the moving mode by adjusting the rotation of the rotation body 30 and the roller 40. .

In addition, when a plurality of casters of the present invention are mounted on an article (2), it is sufficient to install the plurality of casters (2) in one direction while looking at the reference line (52). Can be more easily mounted on the article (2) in the correct position.

On the other hand, in the present invention, a rotation stone piece coupling groove 22 is provided on the bottom surface of the base body 20, and a rotation stone piece 32 is provided on the upper surface of the rotation body 30, so that the rotation body 30 It is disposed on the bottom of the base body 20 so that the rotation stone piece 32 is fitted into the rotation stone piece coupling groove 22, and the rotation stone piece 32 is rotated in the rotation stone piece coupling groove 22 while being forced , When handling the caster of the present invention, the rotation body 30 and the roller 40 coupled thereto can be prevented from being separated from the base body 20, and the caster of the present invention is mounted on the article 2 In the process of moving the article 2 in the state, the rotation body 30 and the roller 40 are also prevented from being separated from the base body 20. By preventing the case where the rotation body 30 and the roller 40 are separated from the base body 20 during the handling of the caster of the present invention or the movement of the article 2, the separated rotation body 30 and the roller 40 The inconvenience of having to be coupled to the base body 20 again is solved.

In addition, since the shaft 44 coupled to the center of the roller 40 is press-fit into the shaft coupling hole 38 inside the rotation body 30, after the roller 40 is coupled to the rotation body 30, the roller ( The roller 40 of the rotation body 30 is pushed in a manner that prevents 40) from being separated from the rotation body 30 and pushes the shaft 44 into the shaft coupling hole 38 inside the rotation body 30. Since it can be assembled in the coupling hole 36, the assembly of the rotation bi and the roller 40 can be made easier and faster.

In addition, a bolt fixing groove 24 is provided on the upper surface of the base body 20, and the head portion 27 of the bolt 26 connected to the article 2 is press-fit into the bolt fixing groove 24. Thus, the bolt 26 for mounting the base body 20 to the article 2 can be assembled to the base body 20 more easily and quickly. The bolt 26 is rotatably coupled to the bracket BK. The bracket BK may be mounted on the bottom of an article 2 such as a leg of a chair or a chest of drawers.

On the other hand, the present invention may further include an angle setter that more firmly maintains the rotation angle of the rotation body 30 rotating relative to the base body 20. In the present invention, the angle setter includes a position setting groove 112 provided on the bottom surface of the base body 20 and the upper surface of the rotation body 30, a position setting ball 114, and a position elastic body for touching the position setting ball 114 ( 116).

The position setting groove 112 is provided on the upper surface of the rotation body 30. A plurality of position setting grooves 112 are provided along the circumferential direction with respect to the center of the rotation body 30. In the present invention, an embodiment in which four are provided on the upper surface of the rotation body 30 of the position setting groove 112 is shown. In this case, the position setting groove 112 may be provided on the bottom surface of the base body 20.

The position setting ball 114 is provided to be elevating in a ball support hole extending from the bottom of the base body 20 to the inside.

The position elastic body 116 is interposed between the ball support hole inside the base body 20 and the position setting ball 114. The position elastic body 116 touches the position setting ball 114 so that a part of the position setting ball 114 protrudes to the bottom surface of the base body 20. Position elastic body 116 may be composed of a coil spring.

As described above, among the rollers 40 of a plurality of casters mounted on the article 2, the rotational body 30 of some of the casters so that the rotational line of some of the rollers 40 crosses the rotational line of the rollers 40 of other casters. ) And the roller 40 during rotation, the position setting ball 114 is pressed by the upper surface of the rotation body 30 and the position elastic body 114 is compressed to maintain an elastic restoring force.

When the rotation body 30 is continuously rotated so that the rotation line of the rollers 40 of some casters is completely turned in a direction intersecting the rotation line of the rollers 40 of other casters, the position setting ball 114 that was pressed It meets the position setting groove 112, the position elastic body 116, which was compressed, is unfolded by the elastic restoring force, and the position setting ball 114 is positioned so as to push the position setting ball 114 in a one-touch manner. To enter the setting groove (112). For example, while the rotation line of the roller 40 of some casters rotates in a direction orthogonal to the rotation line of the roller 40 of the other casters, the compressed position elastic body 116 is unfolded by the elastic restoring force. While losing, the position setting ball 114 is pressed to push the position setting ball 114 so that the position setting ball 114 enters the position setting groove 112 in a one-touch manner.

As described above, if the rotation line of the roller 40 of some casters is rotated in a direction crossing the rotation line of the roller 40 of the other casters, even if the roller 40 of the other caster tries to rotate on the ground, the Since some of the rollers 40 of the casters function as a stop to hold the rotation of the rollers 40 of the other casters, the article 2 does not flow at a desired position and remains in a stable state.

At this time, since the position setting ball 114 is elastically entered into and coupled to the position setting groove 112 by the elastic force of the position elastic body 116, the rotation body 30 and the roller based on the base body 20 Since the case 40 is prevented from turning unintentionally, there is an effect of more firmly maintaining the rotation angle of the rotation body 30 and the rotation angle of the roller 40. The stay mode of the article as described above can be more firmly maintained by the position setting groove 112, the position setting ball 114, and the position elastic body 116.

On the other hand, the rotation lines of the rollers 40 of the plurality of casters of the present invention mounted on the article 2 are turned to be parallel. In the stay mode, the rotation line of the roller 40 of some casters, which turned in a direction intersecting the rotation line of the roller 40 of the other caster (especially, in a direction perpendicular to), is the rotation line of the roller 40 of another caster The rotation body 30 and the roller 40 of some of the casters are turned parallel to each other in a direction opposite to the direction in which the rotation body 30 and the roller 40 were rotated for the stay mode of the article. As described above, assuming that there is a zero reference line of the base body 20, the rotation line of all the rollers 40 of the plurality of casters coupled to the article 2 is parallel to the zero reference line of all the base bodies 20 To be placed. The rotation lines of the rollers 40 of all casters are arranged parallel to the zero reference line of the base body 20.

Of the rollers 40 of a plurality of casters mounted on the article 2, the rotational body 30 and the rollers of some casters so that the rotational line of some of the rollers 40 is parallel to the rotational line of the rollers 40 of other casters. While turning 40 in the opposite direction to switch to the moving mode of the article 2, the position setting ball 114 is pressed by the upper surface of the rotation body 30, and the position elastic body 114 is compressed and elastic restoring force Will be held.

When the rotation body 30 is continuously rotated in the opposite direction so that the rotation line of the roller 40 of some casters is completely reversely rotated in a direction parallel to the rotation line of the roller 40 of another caster, the pressed position When the setting ball 114 meets the position setting groove 112 and the compressed position elastic body 116 is unfolded by the elastic restoring force, the position setting ball 114 is pushed to push the position setting ball 114 in one touch. To enter the position setting groove (112). For example, while the rotation line of the roller 40 of some casters rotates in a direction parallel to the rotation line of the roller 40 of the other casters, the compressed position elastic body 116 is unfolded by the elastic restoring force. While losing, the position setting ball 114 is pressed to push the position setting ball 114 so that the position setting ball 114 enters the position setting groove 112 in a one-touch manner.

As described above, when the rotation lines of all the rollers 40 of the plurality of casters mounted on the article 2 are arranged side by side, the rollers 40 of all the casters mounted on the article 2 may have straightness in the same direction. Since it rotates on the ground, the article 2 does not flow back and forth and moves in a desired direction so as to have straightness.

At this time, since the position setting ball 114 is elastically entered into and coupled to the position setting groove 112 by the elastic force of the position elastic body 116, the rotation body 30 and the roller based on the base body 20 Since the case 40 is prevented from turning unintentionally, there is an effect of more firmly maintaining the rotation angle of the rotation body 30 and the rotation angle of the roller 40. The moving mode of the article as described above can be more firmly maintained by the position setting groove 112, the position setting ball 114, and the position elastic body 116.

On the other hand, the position setting ball 114 is built to be elevating in a ball support hole on the side of the rotation body 30 extending a certain depth from the upper surface of the rotation body 30 to the inside, and inside the rotation body 30 side. It may be configured such that a position elastic body 116 is embedded in the ball support hole, and a position setting groove 112 is provided on the bottom surface of the base body 20.

Even in this case, since the functions or effects of the position setting groove 112, the position setting ball 114, and the position elastic body 116 are the same as those described above, a redundant description thereof will be omitted.

In the above, specific embodiments of the present invention have been described above. However, the spirit and scope of the present invention is not limited to these specific embodiments, and various modifications and variations are possible within the scope of not changing the subject matter of the present invention. Anyone who has it will understand.

Therefore, the embodiments described above are provided to completely inform the scope of the invention to those of ordinary skill in the technical field to which the present invention belongs, and should be understood as illustrative and non-limiting in all respects, The invention is only defined by the scope of the claims.

20. Base body 21. Edge
22. Rotation stone piece coupling groove 24. Bolt fixing groove
26. Bolt 27. Head
30. Rotation Body 32. Rotation Stone Piece
34. Large diameter rotation body 36. Roller coupling hole
38. Shaft coupling hole 40. Roller
42. Shaft hole 44. Shaft
50. Display 52. Baseline
54. Rotation Angle Indicator

Claims (12)

A base body 20;
A rotation body 30 coupled to the base body 20;
Consists of including; roller 40 coupled to the rotation body 30,
It is configured to change the position of the rotation line of the roller 40 by rotating the rotation body 30 relative to the base body 20,
The rotation body 30 is configured to be rotatable with respect to the base body 20 in a state disposed on the bottom surface of the base body 20,
In the base body 20, a display unit 50 for displaying a rotational state of the rotation body 30 and the roller 40 is further provided, and the display unit 50 is a reference line provided on the base body 20 (52) and a rotation angle indicator 54 provided on the rotation body 30,
The reference line 52 is provided on the outer surface of the base body 20, and the rotation angle indicator 54 is composed of an angle marker displayed on the outer surface of the rotation body 30. Improved caster.
delete delete The method of claim 1,
The inside of the rotation body 30 is provided with a roller coupling hole 36 communicated to the bottom surface, and the roller 40 is rotatably coupled to the roller coupling hole 36 to improve movement stability. Made caster.
The method of claim 4,
The roller 40 is configured in a wheel shape having a circular cross section, and the roller engaging hole 36 is configured in a straight hole shape, so that the roller 40 is the roller engaging hole 36 of the rotation body 30 Casters with improved movement stability, characterized in that rotatably coupled to the.
The method of claim 5,
A shaft 44 is coupled to the center of the roller 40, and a shaft coupling hole 38 is provided in the rotation body 30 in a direction orthogonal to the roller coupling hole 36, and the shaft coupling Caster with improved movement stability, characterized in that the shaft (44) in the center of the roller (40) is coupled to the hole (38).
delete delete delete delete The method of claim 1,
The base body (20) is coupled to the bottom of the article (2), characterized in that the base body (20), the rotation body (30) and the roller (40) are coupled to the bottom surface of the object in plural. Casters with improved movement stability.
The method of claim 11,
Among the plurality of rotation bodies 30 and the rollers 40, some of the rotation bodies 30 and the rollers 40 are rotated in a direction crossing the other rotation bodies 30 and the rollers 40, or in the same direction. Casters with improved movement stability, characterized in that configured to rotate side by side.

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