TWI595965B - Abrasive pieces - Google Patents

Description

Abrasive parts

The invention relates to an abrasive member, in particular to an abrasive member which can effectively dissipate heat.

In view of the fact that the abrasive pieces are currently subjected to high-speed rotation during use, the temperature of the abrasive sheets is too high, and various manufacturers have developed techniques for lowering the temperature of the polishing sheets. For example, the Republic of China Patent Publication No. M531405 discloses a sanding adapter disk that can be rotated by an electric drive tool to grind an object. The sanding adapter disk comprises a disk body, a coupling member, a bearing assembly and a driving unit. The disk body has a plurality of air venting holes, and the coupling member is mounted on the surface of the disk body and has a plurality of vent holes respectively communicating with one of the air venting holes. The bearing assembly is mounted on the disk body and can drive the disk body to rotate. The driving unit is coupled between the bearing assembly and the electric drive tool. When the sanding adapter is in actual use, an abrasive sheet can be coupled to the joint by a mating joint such that the abrasive sheet can dissipate heat through the escape holes as the disc rotates.

However, it can be found from the above M531405 that since the coupling member and the mating coupling member are tightly coupled (in one embodiment, the coupling member and the mating coupling member are hook-shaped structures and loops of the devil felt). The structure is such that the surface of the polishing sheet that is covered by the mating joint, the joint, and the disc body is difficult to dissipate, thereby causing the problem that the abrasive sheet may be too hot to be used.

The main object of the present invention is to solve the problem that the polishing sheet is difficult to dissipate due to the surface being covered by the conventional embodiment.

To achieve the above object, the present invention provides an abrasive member selectively assembled to an abrasive hand tool comprising an abrasive sheet and a connector. The connector is coupled between the abrasive sheet and the abrasive hand tool. The abrasive member has a gap formed between the connecting seat and the polishing sheet and communicated to the outside. The connecting seat is formed with a plurality of air guiding through holes communicating with the gap, and the air guiding holes are formed therein. During the rotation of the abrasive member, a gas stream is formed which heat exchanges the abrasive sheet.

In an embodiment, the air guiding through holes are disposed around the connecting base. Wherein, the air guiding through holes are disposed at an outer edge of the connecting seat. Further, the distance between any of the air guiding through holes is the same as each other.

In an embodiment, the air guiding through holes have a circular shape.

In one embodiment, the connector has a concave surface for the gap.

In one embodiment, the polishing sheet has a first fitting portion disposed at a center of the surface of the polishing sheet, and the connecting seat has a second fitting portion disposed at a center of the connecting seat and assembled and fixed by the first fitting portion.

Through the above embodiments, the present invention has the following characteristics as compared with the conventional ones:

According to the present invention, the gap is formed between the polishing sheet and the connecting seat, and the connecting seat has the air guiding through holes communicating with the gap, so that the airflow flows in from the gap due to the rotation of the grinding member. The heat energy generated by the operation of the polishing member is carried out to the outside of the gas guiding holes, thereby solving the problem that the polishing sheet is difficult to dissipate due to the surface being covered by the conventional embodiment.

The detailed description and technical contents of the present invention will now be described as follows:

Referring to FIG. 1 to FIG. 4, the present invention provides an abrasive member 1 which can be mounted on a grinding hand tool 2, so that the grinding hand tool 2 can be used to move an object after driving the polishing member 1. The surface is not subjected to a grinding operation. The polishing member 1 includes an abrasive sheet 11 and a connecting seat 12. The polishing sheet 11 is mounted on the side of the connecting seat 12, and a gap 13 is formed between the polishing sheet 11 and the connecting seat 12 to communicate with the outside. Specifically, the surface of the polishing sheet 11 may have abrasive particles (for example, metal or stone particles, etc.), and the connecting seat 12 may be made of an elastic material (for example, rubber). The connecting seat 12 is formed with a plurality of air guiding through holes 121 , and the air guiding through holes 121 are respectively connected to the gap 13 . In one embodiment, the air guiding through holes 121 are circumferentially disposed on the connecting base 12, as shown in FIG. 4, and the distance between any two of the air guiding through holes 121 may be the same as each other. The polishing sheet 11 has a first fitting portion 111 having a second fitting portion 122, and the first fitting portion 111 is mountable from the assembly structure of the polishing sheet 11 and the connecting seat 12. The second fitting portion 122 is configured to fix the polishing sheet 11 to the side of the connecting seat 12 as shown in FIG. In one embodiment, the first mounting portion 111 is a stud, and the second mounting portion 122 is a screw hole for the stud (ie, the first mounting portion 111) to be screwed and fixed; In the example, the first mounting portion 111 is a plurality of buckles, and the second mounting portion 122 is a plurality of fastening holes for fastening the one of the fastening pieces.

The detailed composition of the abrasive member 1 can be clearly understood from the above technical description. Here, the present invention will further explain the use process of the abrasive member 1 and the embodiment produced by the use process. During the use of the abrasive member 1, the connecting seat 12 is connected between the polishing sheet 11 and the polishing hand tool 2, so that the polishing hand tool 2 can drive the polishing sheet 11 to rotate through the connecting seat 12. In one embodiment, the connecting seat 12 has a shaft hole 123. The grinding hand tool 2 has a driving shaft 21, and the driving shaft 21 can be installed in the shaft hole 123, and the grinding hand tool 2 can be pneumatically The driving mode or the electric driving mode interlocks the driving shaft 21 to drive the grinding member 1 to rotate. When the rotating grinding member 1 is in contact with an object surface (not shown) for performing a grinding operation, the gap 13 is formed between the polishing sheet 11 and the connecting seat 12, and the connecting seat 12 has a The air guiding holes 121 communicate with the gaps 13 such that the air guiding holes 121 form an air flow during the rotation of the grinding member 1. The airflow flows from the gap 13 between the polishing sheet 11 and the connecting seat 12 due to the rotation of the polishing member 1, and then the abrasive member 1 is further separated from the polishing sheet 11 and the connecting seat 12. The heat generated by the operation is carried out to the outside of the gas guiding holes 121. In addition, if the polishing sheet 11 is deformed by pressing the surface of the object, the air flow flows from the side where the space of the gap 13 is small toward the side where the space of the gap 13 is large, and some of the air is guided by the air. The through hole 121 is discharged. Accordingly, the polishing member 1 can perform heat exchange operation on the polishing sheet 11 through the air flow generated by the gas guiding holes 121 to dissipate heat, thereby solving the problem that the polishing sheet is difficult to be covered by the surface in the conventional practice. The problem of heat dissipation.

In order to enable the polishing member 1 to have a better heat dissipation effect when rotating, in an embodiment, as shown in FIG. 4, the air guiding holes 121 have a circular shape to make the airflow. Heat energy is smoothly discharged from the gas guiding holes 121. In addition, the air guiding through holes 121 may be disposed at the edge of the connecting seat 12 (that is, the air guiding through holes 121 are disposed at the outer side of the connecting seat 12), so that the air flow is in the gap 13 After entering between the polishing sheet 11 and the connecting seat 12, the air can be quickly flowed to the air guiding holes 121 to discharge heat energy. In addition to the foregoing two embodiments, the connector 12 has a concave surface 124 opposite to the gap 13, as shown in FIG. 3, the concave surface 124 extends the gap 13 between the abrasive sheet 11 and the connector 12, Thereby increasing the heat dissipation space of the airflow.

The present invention has been described in detail above, but the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Variations and modifications are still within the scope of the patents of the present invention.

1‧‧‧Abrased parts

11‧‧‧Abrasive

111‧‧‧First Assembly Department

12‧‧‧Connecting Block

121‧‧‧Air guiding through hole

122‧‧‧Second Assembly Department

123‧‧‧Axis hole

124‧‧‧ concave

13‧‧‧ gap

2‧‧‧Grinding hand tools

21‧‧‧ drive shaft

Figure 1 is a schematic perspective view of the present invention. Figure 2 is an exploded perspective view of the present invention. Figure 3 is a side cross-sectional view showing the implementation of the present invention. Figure 4 is a top plan view of the present invention.

1‧‧‧Abrased parts

11‧‧‧Abrasive

111‧‧‧First Assembly Department

12‧‧‧Connecting Block

121‧‧‧Air guiding through hole

123‧‧‧Axis hole

Claims (6)

An abrasive member selectively mounted on a grinding hand tool, comprising: an abrasive sheet; and a connecting seat connected between the polishing sheet and the grinding hand tool; wherein the grinding member has a formed on the connecting seat a gap between the polishing sheet and the external portion, the connecting seat is formed with a plurality of air guiding through holes communicating with the gap, and the air guiding holes are formed during the rotation of the grinding member. a heat exchanged airflow; wherein the polishing disk has a first mounting portion disposed at a center of the surface of the grinding disk, the connecting seat having a second portion disposed in the center of the connecting seat and assembled and fixed by the first mounting portion Assembly department. The abrasive member according to claim 1, wherein the air guiding through holes are disposed around the connecting seat. The abrasive member according to claim 2, wherein the air guiding through holes are disposed at an outer edge of the connecting seat. The abrasive member according to claim 3, wherein the distance between any two of the air guiding through holes is the same as each other. The abrasive member according to claim 1, 2, 3 or 4, wherein the air guiding through holes have a circular shape. The abrasive article of claim 1, 2, 3 or 4, wherein the connector has a concave surface to the gap.