KR20070016835A - Caster with Installation Device - Google Patents

Abstract

The present invention is installed in the lower portion of the heavy equipment such as medical equipment, communication equipment or medium and large refrigerators and easy to move, and at the same time the caster is integrally installed with a fixed mechanism for stably fixing the equipment in a certain position Regarding,

According to the stationary mechanism integrated caster of the present invention, when the positioning nut is moved up and down by rotating on the screw portion of the fixed shaft, the support cylinder is not rotated, but only moves up and down in conjunction with the up and down movement of the positioning nut. When rotating the positioning nut to move upward along the screw part of the fixed shaft, the support cylinder is also moved upward along the positioning nut by the locking member so that the moving wheel can contact the bottom surface. When the nut is rotated and moved downward along the threaded part of the fixed shaft, after the bottom surface of the support cylinder touches the bottom surface, the downward movement of the positioning nut is prevented by the upper surface of the support cylinder. When rotated, the screw part of the fixed shaft moves upward along the thread of the positioning nut. Becomes as lifting equipment is fixed to the fixed shaft of the moving wheel and a mobile wheel maintains the fixed state of the equipment.

 Casters, Fixtures, Fixing, Nuts, Hanging Members

Description

Political Body Integrated Caster {Caster with Installation Device}

1 is a perspective view of an essential part showing an installation state of a conventional general caster.

2 is a perspective view showing an example of a conventional stationary mechanism integrated caster.

3 is a cross-sectional view showing another example of a conventional stationary mechanism integrated caster.

4 to 7 is a view showing a stationary mechanism integrated caster according to an embodiment of the present invention, Figure 4 is an exploded perspective view showing the configuration of the main parts, Figure 5 shows a state in which the positioning nut is coupled to the support cylinder Some cutaway perspective views, FIGS. 6A and 6B are cross-sectional views for explaining the operating state.

7 is a cross-sectional view showing an installation state on an inclined surface.

8A and 8B are perspective views showing another embodiment of the positioning nut.

9 is a partially cutaway perspective view showing another embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

10: moving wheel 20: support cylinder

30: position adjusting nut 50: protective cover

11a: threaded portion 21a: flow hole

31: locking member 31a: locking portion

30a: spherical groove 21b: spherical rotation guide

The present invention relates to a caster, and more particularly, is installed in the lower portion of the heavy equipment, such as medical equipment, communication equipment or medium and large refrigerators to facilitate its movement, and at the same time to stably fix the equipment in a certain position It is related with the caster in which the political apparatus is integrally installed.

Heavy equipment, such as medical equipment, communication equipment, medium and large refrigerators, or vending machines, is usually provided with a caster at the bottom of the equipment in order to facilitate its movement.

After moving these equipment to the installation position by using the caster's moving wheels, the moving wheels need to be stably fixed in a certain position without being shaken or easily moved. As shown in FIG. On one side of the equipment, a caster for movement (1) is installed and the other side of the fixed leg (2) is adjustable by a screw, but in this way, when moving the equipment, the caster's moving wheels on the floor Since the equipment must be moved with the fixed leg (2) side up from the floor in a touching state, that is, the equipment is inclined at an angle, if the weight of the equipment is very large, the equipment should be kept in an inclined state. It is not easy to perform the work, and during the moving work, the floor is scratched and damaged frequently by the fixed leg 2. There was a downside.

Therefore, in recent years, casters in which stationary mechanisms are integrally installed to move the equipment in a horizontal state have been widely used.

The stationary caster is provided with a tooth on the axis of the moving wheel to restrict the rotation of the moving wheel itself by operating a locking device such as a latch, and by moving the caster's moving wheel by a certain distance when fixing the equipment. In the former case, the structure of the caster itself is complicated, which increases the cost, and the latches and ratchets are easily damaged by the lateral load. Since the equipment has a problem in that it is difficult to apply, the latter method is often adopted for relatively large equipment.

FIG. 2 is a view showing an example of a stationary mechanism-integrated caster formed so as to separate the caster's moving wheels from the floor by a fixed distance when the equipment is fixedly installed. A fixing screw hole 1b is provided at one side of the movable wheel 1a. The caster which is provided and the fixed leg 2 in which the disc shaped synthetic resin support part 2b and the bolt part 2a are insert-molded integrally is shown by the screw hole 1b, and is fixed at the time of equipment movement. By fastening the bolts 2a of each leg 2 to the screw holes 1b deeply, the supporting parts 2b are moved at a distance from the ground, and in the case of fixing the equipment, the screws 2a are moved from the screw holes 1b. By unscrewing the bolt part 2a and bringing the support part 2b into close contact with the floor and lifting the moving wheel 1a, the equipment is kept in place without being shaken by the moving wheel.

According to the caster of Figure 2, the equipment can be easily moved using the rotation of the moving wheel (1a) while maintaining a horizontal state, after fixing the advantages of the equipment can be firmly supported by the fixed leg (2) However, when the support leg (2b) is in close contact with the bottom surface during the rotation operation of the fixed leg for fixing the equipment in order to lift the moving wheel a certain distance from the bottom surface fixed leg (b) in close contact with the floor ( 2) should be rotated further, but the friction between the support and the bottom surface is not only easy to rotate the fixed leg, but also easy to damage the bottom surface, in order to prevent this from lifting the side of the equipment When adjusting the protruding length of the bottom of the fixed leg relative to the bottom of the moving wheel by rotating the fixed leg, it is difficult to uniformly adjust the length of each fixed leg. There is a disadvantage that it is difficult to install the equipment horizontally, and also has a disadvantage in that the wheel, fixed leg and screw parts are exposed to the outside to damage the appearance.

3 is a view showing another example of the stationary mechanism integrated caster, the threaded portion (3a) is formed on the fixed shaft (3) above the moving wheel (1a), the lower portion is open and the upper portion is closed cylindrical support cylinder ( A screw hole 4b formed on the upper surface 4a of 4) is fastened to the screw portion 3a of the fixed shaft, so that the support cylinder 4 surrounds the upper and side portions of the moving wheel as a whole. Represents an integral caster,

At the time of movement of the equipment, the state in which the fastening state of the support cylinder 4 with respect to the fixed shaft 3 is adjusted so that the lower end of the support cylinder 4 is higher than the lower end of the moving wheel 1a (that is, the solid line in FIG. 3), that is, The moving wheel is protruded to the lower part of the support cylinder to move the equipment by using the moving wheel, and when fixing the equipment by rotating the support cylinder, the lower end of the support cylinder protrudes than the bottom of the moving wheel (Fig. 3 By changing the fastening state of the support cylinder 4 to the fixed shaft 3 so as to be a dashed line), the equipment does not shake due to the moving wheels and maintains the position.

According to the caster of Figure 3, as the cylindrical support cylinder is surrounded by the outside of the moving wheel, unlike the caster of Figure 2, there is an advantage that the moving wheel is not exposed to the outside, the appearance is excellent, the upper and lower positions of the support cylinder Not only is it not easy to operate and hold the supporting cylinder by hand to adjust the pressure, but also to raise the movable wheel from the bottom by a certain distance, the supporting cylinder should be further rotated while the bottom surface of the supporting cylinder is in close contact with the floor. However, due to the friction force between the support cylinder and the bottom surface, the fixed leg is not easy to rotate, the bottom surface may be damaged, and the equipment may not be easily adjusted. If it is not, the lower surface of the support cylinder will not come into close contact with the floor as a whole, and some of the surface will be lifted to stabilize the device. There was a problem of not supporting.

The present invention was devised to solve all the problems of the conventional fixed-integrated caster as described above, the support cylinder is wrapped around the outside of the wheel to move the wheel is not exposed to the outside, while the appearance is excellent, the support cylinder and the floor An object of the present invention is to provide a caster integrated caster that can easily adjust the height of the support cylinder without frictional resistance due to relative rotation between the surfaces or consequently scratching of the bottom surface.

Still another object of the present invention is to provide a stationary mechanism-integrated caster capable of stably supporting the device regardless of the horizontal state of the bottom surface.

The stationary caster integrated caster according to the present invention for achieving the above object is installed at the bottom of the device to facilitate the movement of the device and at the same time serves to fix the device in a certain position, the lower part is open and the upper part is closed In a stationary mechanism-integrated caster provided with a supporting cylinder to surround the outside of the moving wheel on a fixed shaft on the upper part of the moving wheel, the fixed shaft has a threaded portion, and a position adjusting nut is fastened to the screwed portion of the fixed shaft. The upper surface of the support cylinder is formed with a flow hole having a diameter larger than the diameter of the screw portion, the flow hole is inserted into the fixed shaft of the lower portion of the positioning nut, the lower portion of the positioning nut and the support cylinder On either side of the upper portion, the support cylinder with the position adjusting nut during the upward movement of the position adjusting nut Bar comprising the latching member such that the upward movement,

According to the stationary mechanism integrated caster of the present invention, when the support cylinder is not linked to the rotational movement of the positioning nut, but only interlocked up and down, the position adjusting nut is rotated to move the equipment to move upward along the screw of the fixed shaft. The support cylinder is also moved upwardly along the position adjusting nut by the locking member so that the wheel can be contacted with the bottom surface. When the position adjusting nut is rotated to fix the equipment, the support cylinder is moved downward along the screw part of the fixed shaft. After the bottom surface touches the bottom surface, downward movement of the positioning nut is prevented by the upper surface of the support cylinder.In this state, if the positioning nut is further rotated, the screw of the fixed shaft moves upward along the thread of the positioning nut. As a result, the equipment fixed to the wheel and the fixed shaft of the wheel are lifted. It is maintained in a static state.

Therefore, it is possible to easily adjust the upper and lower positions of the support cylinder by rotating the position adjusting nut using a tool such as a spanner without having to hold and rotate the support cylinder itself by hand, and the height of the support cylinder is not rotated. Since it is adjustable, the height of the support cylinder can be easily adjusted without friction between the support cylinder and the bottom surface or consequently scratching of the bottom surface.

Preferably, the lower surface of the positioning nut is formed with a spherical groove, the upper surface of the support cylinder is formed with a spherical rotary guide corresponding to the spherical groove, bar according to the technical features of the present application Even when there is an inclined portion on the bottom surface, the spherical rotary guide portion of the support cylinder rotates in the spherical groove of the positioning nut, so that the lower surface of the support cylinder remains in close contact with the bottom surface as a whole. You can do it.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is an exploded perspective view showing the configuration of the main components, Figure 5 is a partial cutaway perspective view showing a state in which the position adjusting nut is coupled to the support cylinder, Figure 6a and Figure 6b is a cross-sectional view for explaining the operating state, respectively.

The fixed shaft 11 installed on the upper surface 10a of the moving wheel 10 has a screw portion 11a formed thereon, and an upper surface 21 of the cylindrical support cylinder 20 in which the lower portion is open and the upper portion is closed. In the center part, a flow hole 21a having a size larger than the outer diameter of the screw portion 11a is formed, and the support cylinder 20 is moved outside the moving wheel by inserting the flow hole 21a into the outer circumference of the fixed shaft 11. It is installed to be movable up and down in the form of enclosing the position adjustment nut 30 is fastened to the screw portion 11a of the fixed shaft exposed to the upper through the flow hole (21a).

The locking member 31 is formed to extend downwardly on the outer side of the screw hole in the lower surface of the positioning nut 30, and the outer diameter of the locking member 31 is smaller than the diameter of the flow hole 21a, and the end of the locking member 31 flows. Extending into the support cylinder through the ball, and before engaging the position adjusting nut 30 to the screw portion (11a), as shown in Figure 5, the locking member 31 to the flow hole (21a) of the support cylinder By inserting and pressing the end portion by press or the like to bend outward, the locking portion 31a extending outward of the flow hole is formed inside the support cylinder. Thus, the positioning nut and the support cylinder are engaged by the locking member. In a state where the flow is coupled to each other, by engaging the positioning nut to the screw portion to form a coupling state as shown in FIG.

6A and 6B are assembled cross-sectional views showing the moving and stationary states of the stationary caster integrated caster according to the present invention, respectively, by rotating the positioning nut 30 to move the equipment, as shown in FIG. 6A. When the fastening position is moved upward above the screw portion 11a of the fixed shaft, the support cylinder 20 is also positioned with the upper end surface inside the support cylinder 20 being caught by the locking portion 31a of the locking member 31. It moves upward along the adjustment nut 30, and as a result, the bottom surface of the moving wheel 10 protrudes to the lower portion of the support cylinder 20 and contacts the bottom surface, thereby enabling the movement of the equipment by the rotation of the moving wheel. In order to fix the equipment, when rotating the positioning nut 30 to move downward along the screw portion 11a of the fixed shaft, the bottom surface of the support cylinder is placed by the upper surface of the support cylinder after contacting the bottom surface. Adjusting nut When the positioning nut is further rotated in this state, as shown in FIG. 6B, the screw of the fixed shaft moves upward along the thread of the positioning nut, thereby being fixed to the fixed wheel of the moving wheel and the moving wheel. The existing equipment is lifted to keep the equipment stationary.

On the other hand, according to a preferred embodiment of the present invention, the lower surface of the positioning nut 30 is formed with a spherical groove 30a, the upper surface 21 of the support cylinder 20 corresponding to the spherical groove (30a) The spherical rotation guide portion 21b is formed and configured. According to this configuration, as shown in FIG. By rotating the rotation guide portion 21b in the spherical groove (30a) of the positioning nut, the lower surface of the support cylinder is maintained in close contact with the floor as a whole, it is possible to support the equipment more stably.

According to the present invention, since the upward movement of the moving wheel is made by rotating only the position adjusting nut without the need to rotate the support cylinder itself, it is possible to prevent scratches on the bottom surface due to frictional rotation between the bottom surface and the bottom surface of the support cylinder. However, in order to more reliably prevent the bottom surface from being scratched due to other reasons such as moving the equipment in a fixed state, it is preferable to install a protective cover 50 in the form of a ring formed of synthetic resin or rubber on the bottom surface of the support cylinder. In the above embodiment, the embodiment in which the locking portion 31 at the end of the cylindrical locking member 31 is bent in a expanded form by pressing or the like, is coupled to a push washer on the outer circumference of the locking member, or a groove is formed at the end of the locking member. It is also possible to form a locking portion by coupling the snap ring to form a, and also, as shown in Figure 8a, the end of the locking member 30 It is also possible to form a tapered protruding engaging portion 31 on the elastic member so as to be elastically pressed into the flow hole 21a of the support cylinder, and not to form the cylindrical cylindrical portion, as shown in FIG. 8B. It is also possible to form a linear engaging piece 31 'of the lower portion of the positioning nut by welding or the like.

On the other hand, in the case of the above embodiment, the locking member is shown an example formed on the lower portion of the position adjusting nut, it is also possible to form it on the upper portion of the support cylinder.

9 is an assembled state cross-sectional view showing an embodiment in which the locking member is installed on the upper portion of the support cylinder, and has a ring-shaped locking member 22 having a locking portion 22a extending at the end of the positioning nut inwardly. To an embodiment coupled to the upper surface of the support cylinder by welding or the like so as to extend upwardly from the upper surface of the support cylinder 20 to the upper portion of the outer circumferential surface of the positioning nut 30, the support cylinder according to the movement of the position adjustment nut. Up and down interlocking action is the same as the previous embodiment, so a detailed description of the operation will be omitted.

9 is an assembled state cross-sectional view showing an embodiment in which the locking member is installed on the upper portion of the support cylinder, and has a ring-shaped locking member extending upwardly from the upper surface of the support cylinder 20 to the upper portion of the outer peripheral surface of the positioning nut 30 ( 22) is coupled to the upper surface of the support cylinder by welding or the like, but shows an embodiment in which the engaging portion 22a is formed at the end of the engaging member and extends into the outer circumferential surface of the positioning nut. The up and down interlocking action of the support cylinder is the same as in the previous embodiment, so a detailed description of the operation will be omitted.

In the above embodiment, the support cylinder has a cylindrical cross section, for example, but the lower portion such as a polygonal or elliptical cross-section cylinder or corner cylinder is open and the upper portion is closed to surround the outside of the moving wheel may be any shape. , The coupling method with the equipment can be applied to any of the general coupling method of the caster, such as using a screw coupling or caulking method by installing a separate bracket on the top of the fixed shaft.

According to the caster-integrated caster according to the present invention as described above, the cylindrical support cylinder is wrapped around the outside of the moving wheel, the moving wheel is not exposed to the outside, while the appearance is excellent, the support cylinder rotates the position adjustment nut It does not need to hold the support cylinder itself by hand, and rotates the position adjusting nut by using a tool such as a spanner, so that the support cylinder can be easily adjusted up and down. Since the height is adjusted in a non-rotating state, it is possible to easily adjust the height of the support cylinder without friction between the support cylinder and the bottom surface or consequently scratching of the bottom surface.

In addition, even when there is an inclined portion on the bottom surface on which the caster is placed, since the spherical rotation guide portion of the support cylinder rotates in the spherical groove of the positioning nut, the lower surface of the support cylinder maintains a close contact with the bottom surface as a whole. The equipment can be stably supported.

Claims (4)

It is installed in the lower part of the device to facilitate the movement of the device and at the same time serves to fix the device in a certain position, and the support cylinder with the lower part open and the upper part closed on the fixed shaft of the upper part of the moving wheel outside In the caster integrated caster provided to surround the, The fixed shaft is formed with a threaded portion, the position adjustment nut is fastened to the screwed portion of the fixed shaft, A flow hole having a diameter larger than the diameter of the screw portion is formed on the upper surface of the support cylinder, and the flow hole is inserted into the fixed shaft under the position adjusting nut. Fixing unit integrated caster, characterized in that at any one of the lower portion of the positioning nut and the upper portion of the support cylinder, the support member is provided with a locking member to move upward with the position adjustment nut when the position adjustment nut moves upward. . The method of claim 1, The locking member is installed to extend downward from the outer side of the screw hole of the lower position adjustment nut, and extends to the inside of the support cylinder through the flow hole of the support cylinder, the engaging portion extending to the outside of the flow hole at its end A stationary caster integrated caster, characterized in that formed and configured. The method of claim 1, The locking member is installed so as to extend upward from the upper surface of the support cylinder to the upper outer peripheral surface of the position adjusting nut, the end of the locking member extending to the inner peripheral surface of the position adjusting nut is configured to be configured Instrument integrated casters. The method according to any one of claims 1 to 3, The lower surface of the positioning nut is formed with a spherical groove, the upper surface of the support cylinder is a stationary mechanism integrated caster, characterized in that the spherical rotary guide portion corresponding to the spherical groove is formed. Instrument integrated casters.

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