KR101553991B1 - Wheel structure for grinding apparatus - Google Patents

Abstract

According to the present invention, a wheel structure for a grinding apparatus comprises: a disk-shaped rotary base rotated by a motor; a plurality of adapter members fixated to a lower surface of the rotary base, and spaced from each other in a circumferential direction of the rotary base; and a grinding member slid-coupled to a gap between the adapter members where a diamond grinding tip is provided to a lower surface. The gap between the adapter members is configured to have a trapezoid shape having a smaller width from a center of the rotary base towards the outside in a diameter direction of the rotary base.

Description

[0001] The present invention relates to a wheel structure for a grinding apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wheel structure used in a polishing apparatus and relates to a wheel structure rotated by a motor.

Generally, the polishing apparatus is detachably fixed to an abrasive member coated with diamond powder or an abrasive member made of resin mixed with diamond powder on an abrasive wheel rotated by a motor. As the grinding wheel rotates, the grinding member rotates to smoothly polish the surface of the floor or the wall or to remove impurities.

Such a polishing apparatus is widely used in industrial fields such as construction and interior construction. The grinding wheel is rotated at a high speed by a motor to polish the surface of the object to be polished. One example of such a wheel structure for a polishing apparatus is disclosed in Published Utility Model No. 2010-0009796.

A conventional wheel structure for a polishing apparatus includes a wheel body rotated by a motor and an abrasive member detachably fixed to the wheel body. Generally, the abrasive member is coated or mixed with poly-crystalline diamond powder (PCD) on a metal or a synthetic resin. The polishing member is detachably fixed to the wheel body. This is because the abrasive members are worn out depending on use and therefore exchange is indispensable. The abrasive member is detachably fixed to the wheel body by means such as a magnet, a valcro, a bolting, a press-fit, or the like. In recent years, the use of a magnet or a balck-type fixing means has been increasing to facilitate the exchange of the abrasive member.

However, when the abrasive member is fixed to the wheel body and friction occurs on a floor or a wall of a building to be polished while rotating at a high speed, the abrasive member frequently unexpectedly deviates from the wheel body. When the polishing member is detached from the wheel body while the polishing member is rotating, there is a problem in that it can damage the body of a person who is around the worker as well as the worker, and the life of the polishing member is shortened.

SUMMARY OF THE INVENTION An object of the present invention is to provide a wheel structure for a polishing apparatus which is improved in structure of a wheel for a polishing apparatus so that the polishing member is not separated from the rotating base.

According to an aspect of the present invention, there is provided a wheel structure for a polishing apparatus, comprising: a disk-shaped rotating base rotated by a motor;

A plurality of adapter members fixed to a lower surface of the rotating base and spaced apart from each other in the circumferential direction of the rotating base; And

And an abrasive member slidingly coupled to the space spaced apart from the adapter member and having a diamond abrasive tip on a lower surface thereof,

The space separated from the adapter member is characterized by a trapezoidal shape in which the width gradually decreases from the center of the rotary base to the outer side in the radial direction of the rotary base on the rear view.

And the adapter member is fixed to the rotating base by a plurality of bolts.

The polishing tip provided on the lower surface of the polishing member may include a first polishing tip disposed in the radial direction of the rotating base and a second polishing tip disposed in a direction perpendicular to the radial direction of the rotating base.

The adapter member may be provided with a latching jaw structure for preventing the abrasive member from being detached downward from the rotating base, and the latching jaw structure may be configured to form the same structure as a portion where the abrasive member is slidably engaged with the adapter member desirable.

The wheel structure for a polishing apparatus according to the present invention prevents an abrasive member detachably fixed to a rotating base from being unexpectedly released to the outside of the rotating base when centrifugal force acts, So that the abrasive member can be easily replaced. Also, the adapter member provided for the detachment structure of the abrasive member is also bolted to the rotation base, so that the adapter member can be easily replaced as needed.

1 is a perspective view of a wheel structure for a polishing apparatus according to a preferred embodiment of the present invention.
Fig. 2 is a view of the wheel structure for the polishing apparatus shown in Fig. 1 viewed from another direction. Fig.
3 is a view showing a coupling structure of an abrasive member in the wheel structure for a polishing apparatus shown in Fig.
FIG. 4 is a view showing a state in which the rotating base and the polishing member are separated from each other in the structure shown in FIG. 3;
5 is a sectional view taken along the line V-V shown in Fig.

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

1 is a perspective view of a wheel structure for a polishing apparatus according to a preferred embodiment of the present invention. Fig. 2 is a view of the wheel structure for the polishing apparatus shown in Fig. 1 viewed from another direction. Fig. 3 is a view showing a coupling structure of an abrasive member in the wheel structure for a polishing apparatus shown in Fig. FIG. 4 is a view showing a state in which the rotating base and the polishing member are separated from each other in the structure shown in FIG. 3; 5 is a sectional view taken along the line V-V shown in Fig.

1 to 5, a wheel structure 10 for a polishing apparatus according to a preferred embodiment of the present invention includes a rotating base 20, an adapter member 30, and a polishing member 40.

The rotating base 20 is rotated by a motor (not shown). The rotary base 20 is, for example, a disc-shaped structure as shown in FIG. A coupling hole 22 for coupling to a rotation axis (not shown) of the motor may be provided at the center of the rotation base 20. The rotating base 20 may be made of a metal such as carbon steel. The rotary base 20 is provided with a plurality of grooves for fixing the adapter member 30 to be described later. Preferably, the inner circumferential surfaces of the plurality of grooves are each provided with a female screw portion.

The adapter member (30) is fixed to the lower surface of the rotary base (20). The adapter member 30 may be fixed to the rotary base 20 by means such as a bolt. More specifically, the adapter member 30 includes a plurality of coupling holes 22, and a bolt is screwed to the female threaded portion provided in the groove provided in the rotary base 20 through the coupling hole 22 And can be fixed to the rotary base 20. When the adapter member 30 is fixed to the rotary base 20 by the bolts as described above, the adapter member 30 can be easily separated from the rotary base 20, There are advantages. A plurality of the adapter members 30 are provided. In the present embodiment, three adapter members 30 are provided. The adapter members (30) are disposed apart from each other in the circumferential direction of the rotary base (20). Therefore, a space is formed between the adapter members 30. The space between the adapter members 30 is hereinafter referred to as a polishing member coupling portion 32. [ The abrasive member engaging portion 32 constitutes a trapezoidal shape on the rear view. More specifically, the abrasive member engaging portion 32 has a trapezoidal shape in which the width of the abrasive member engaging portion 32 gradually decreases from the center of the rotary base 20 toward the outer side in the radial direction of the rotary base 20 on the rear view. The abrasive member engaging portion 32 realizes the essential operational effects of the present invention. That is, the abrasive member 40 coupled to the abrasive member engaging portion 32 is not unexpectedly separated from the rotary base 20 even if the centrifugal force acts while the rotary base 20 is rotating. That is, since the shape of the abrasive member 40 is configured to correspond to the abrasive member engaging portion 32, when the centrifugal force acts on the abrasive member 40, the abrasive member 40 Is not released to the outside of the abrasive member engaging portion 32.

The adapter member 30 has a structure of a locking protrusion 34 for preventing the abrasive member 40 from being separated from the rotation base 20 downward. The structure of the latching jaw 34 forms the same structure as the portion where the abrasive member 40 is slidingly coupled to the adapter member 30. [ The engaging protrusion 34 is formed in a flat surface, and an angle formed between the plane forming the engaging protrusion 34 and the lower surface of the rotating base 20 forms an acute angle.

The abrasive member 40 is slidably engaged with the abrasive member engaging portion 32. A diamond abrasive tip 45 is provided on the lower surface of the abrasive member 40. The abrasive tip 45 may be formed by sintering a powder of poly-crystalline diamond. The scraper member 40 has a shape corresponding to the abrasive member engaging portion 32. The polishing member 40 has a rail 42 slidingly coupled to the abrasive member engaging portion 32. The rail 42 has a larger width as it approaches the rotary base 20. More specifically, the rails 42 form a planar structure. The planes constituting the rail part (42) form an acute angle with the lower surface of the rotary base (20). Therefore, the railing portion 42 is caught by the engaging step 34 provided on the abrasive member engaging portion 32 to prevent the abrasive member 40 from falling downward of the rotating base 20. Since the engaging protrusion 34 is slidably engaged with the rail 42 to prevent the abrasive member 40 from being radially outwardly displaced from the rotary base 20, Thereby preventing the rotation base 20 from falling downward.

The abrasive tip 45 provided on the lower surface of the abrasive member 40 includes a first abrasive tip 46 disposed in the radial direction of the turntable base 20 and a first abrasive tip 46 disposed in a direction perpendicular to the radial direction of the turntable base And a second polishing tip 47. When the polishing tip 45 includes the first polishing tip 46 and the second polishing tip 47 arranged in directions perpendicular to each other, a uniform polishing effect can be expected regardless of the surface condition of the bottom surface to be polished.

The lower surface of the abrasive member (40) is disposed so as to protrude further downward than the lower surface of the adapter member (30).

Further, the abrasive member (40) is provided with a pressing assisting pressing groove portion (48). The joining assisting pressing depressed portion 48 is provided at the inner corner of the abrasive member 40. The central portion of the inner edge of the abrasive member 40 is most concave so that when an external force is applied to the abrasive member 40, So as to induce an external force to act. Therefore, when the abrasive member 40 is slidably engaged with the abrasive member engaging portion 32, the auxiliary assisting pressurizing depressed portion 48 is provided so that the user can easily press the abrasive member 40 with his fingers will be. The abrasive member 40 can accurately apply an external force to the abrasive member engaging portion 32 in the joining direction of the abrasive member 40 during the sliding engagement when the joining auxiliary pressing depressed portion 48 is provided. So that the joining operation is easier.

Hereinafter, the operation and effect of the wheel structure 10 for a polishing apparatus according to the present embodiment constructed as described above will be described with reference to a case where the wheel structure 10 for a polishing apparatus is rotated by a motor and the surface of the floor or the wall is polished Will be described in detail.

The wheel structure 10 for a polishing apparatus is mounted on a polishing apparatus and polished on the floor while being rotated by a motor. In this case, the operator grasps the handle of the polishing apparatus and performs work. However, when the wheel structure 10 for a polishing apparatus rotates at a high speed, the polishing member 40 receives a centrifugal force in a tangential direction with respect to the rotating direction of the rotating base 20. By this centrifugal force, the force to move the polishing member 40 to the outside of the rotary base 20 acts. The force acting as a centrifugal force against the centrifugal force is a force to which the abrasive member 40 is fixed by the abrasive member engaging portion 32. [ That is, the abrasive member 40 receives a centrifugal force to be separated from the abrasive member engaging portion 32. In this case, since the abrasive member engaging portion 32 is formed in a trapezoidal shape, The abrasive member 40 is subjected to resistance by the structure of the engaging jaw 34 by centrifugal force to be separated from the abrasive member engaging portion 32. [ Therefore, the abrasive member 40 is not separated from the rotary base 20 during high-speed rotation.

Further, the abrasive member 40 is caught by the engaging protrusion 34 and is prevented from falling downwardly of the rotating base 20.

The abrasive member 40 is not separated from the rotary base 20 during the high speed rotation due to the structure of the abrasive member engaging portion 32 formed by the distance between the adapter members 30, 34 is prevented from being detached downwardly of the rotary base 20 due to the structure. Further, since the abrasive member 40 is slidingly coupled to the abrasive member engaging portion 32, it can be easily replaced if necessary. Further, since the adapter member is also fixed to the rotating base 20 by a plurality of bolts, it can be easily replaced when abrasion or damage occurs due to use for a long time. Therefore, there is an advantage that the rotating base 20 directly connected to the motor can be effectively protected.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but many variations and modifications can be made by those skilled in the art within the technical scope of the present invention. Is obvious.

10: Wheel structure for a polishing apparatus
20: rotating base
22: coupling ball
30: Adapter member
32: abrasive member coupling portion
34:
40: abrasive member
42: Le Mans
45: Abrasive tip
46: First polishing tip
47: Second polishing tip
48: Combined auxiliary pressurizing groove

Claims (4)

A disk-shaped rotating base rotated by a motor;
A plurality of adapter members fixed to a lower surface of the rotary base and spaced apart from each other in the circumferential direction of the rotary base; And
And an abrasive member slidingly coupled to the space spaced apart from the adapter member and having a diamond abrasive tip on a lower surface thereof,
Wherein the spaced apart spaces between the adapter members are formed in a trapezoidal shape in which the width gradually decreases from the center of the rotary base to the outer side in the radial direction of the rotary base on the rear view,
Wherein the abrasive member has a pressing assisting depressed portion for assisting engagement,
Wherein the coupling assisting pressing depressed portion is provided at an inner corner of the abrading member,
Wherein the coupling assisting pressing depressed portion has a concave portion at the center of the inner edge of the abrasive member to guide an external force in a direction of a center line of the abrasive member engaging portion when an external force is applied to the abrasive member The wheel structure for a polishing apparatus. The method according to claim 1,
Wherein the adapter member is fixed to the rotating base by a plurality of bolts. The method according to claim 1,
Wherein the polishing tip provided on the lower surface of the polishing member includes a first polishing tip arranged in the radial direction of the rotating base and a second polishing tip arranged in a direction perpendicular to the radial direction of the rotating base. Wheel structure. The method according to claim 1,
The adapter member may have a latching jaw structure for preventing the abrasive member from being detached downward from the rotation base, and the latching jaw structure may form a structure similar to a portion where the abrasive member is slidably coupled to the adapter member Wherein the wheel structure is a wheel structure for a polishing apparatus.

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