WO2020175853A1

WO2020175853A1 - Grinder holder enabling polishing pad to be attached thereto and detached therefrom by one touch

Info

Publication number: WO2020175853A1
Application number: PCT/KR2020/002501
Authority: WO
Inventors: 채성덕
Original assignee: 채성덕
Priority date: 2019-02-25
Filing date: 2020-02-20
Publication date: 2020-09-03
Also published as: KR20210083072A; KR102276986B1

Abstract

The present invention relates to a grinder holder enabling a polishing pad to be attached thereto and detached therefrom by one touch. A grinder holder, which is mounted on a rotating shaft of a grinder and enables a polishing pad to be attached thereto or detached therefrom, comprises: a main body including a coupling hole formed in the center thereof to be coupled to the rotating shaft of the grinder, guide paths formed on both sides thereof and having a shape which opens toward the outside, a through-hole formed in the upper surface on the upper side of the guide path, and a pair of semi-circular rotating guide protrusions facing each other and formed around the coupling hole of the lower surface thereof; a locking means which slides along the guide path and includes an upper locking protrusion formed on one side thereof that protrudes upward through the through-hole and is locked, and a lower pressing protrusion formed on the other side thereof and extending downwards; a compression spring, provided between the locking means and the coupling hole, for elastically supporting the locking means; a safety piece which is formed in a disc shape, and includes an insertion hole, in which the rotating guide protrusion is inserted, formed in the center thereof so to be rotatable, fixed protrusions formed on both sides thereof that protrude up to the lower pressing protrusion, and a rotating tag formed on one side thereof and protruding; and a cover plate which covers the lower portion of the main body, wherein the lower pressing protrusion is caught by the fixed protrusion so as to prevent the locking means from being released, and if the locking means is pressed after the rotating tag is held and the safety piece is rotated, the locking of the upper locking protrusion can be released from an attachment hole.

Description

2020/175853 1»（：1/10公020/002501 Specification

Name of invention: Grinder holder technology field that allows removal and attachment of the polishing pad with one touch

[1] The present invention relates to a grinder holder. More specifically, it relates to a grinder holder capable of attaching and detaching the polishing pad with one touch, which has a structure that allows the polishing pad or cutter to be attached or detached from the grinder with a single operation.

Background

[2] In general, a grinder generates rotational power by a motor or pneumatic pressure, and transmits the generated rotational force to a rotational shaft formed on one side of the grinder.

It is used when grinding or cutting the surface of a work piece by combining a grinding tool such as a polishing disk or a polishing pad or a circular cutter.

[3] Grinders It can be divided into fixed type grinders, which place a large amount of workpieces in a fixed position and perform grinding work, and portable grinders that can be moved to various places and are portable and movable to process small and small workpieces.

[4] Recently, a lot of convenient portable grinders are used, and portable grinders wear out after a certain period of time, so they need to be replaced. And they are often replaced with other sizes or types of grinding tools.

[5] Related to such a hand grinder, the technology disclosed in Korean Utility Model Publication No. 0356304 allows the head on which the polishing plate is mounted to be fitted to the rotary shaft of the grinder and fixed or separated by fastening members such as fixing nuts. However, this has the hassle of having to repeat the process of tightening or loosening the fixing nut using a separate tool such as a spanner, and it takes unnecessary time due to the replacement work of the polishing plate, and it is a place that can be replaced in a narrow space or at high places. It was a factor that deteriorated work efficiency due to difficulty in continuity of work, such as moving to a machine.

[6] In addition, taking into account the above points, the registered utility model No. 0373648 or No. 0376952 has a sleeve that moves in the axial direction on the circumference of the coupler, so that the rocking ball is raised and lowered, thereby removing the polishing tool in one-touch method. , A structure that can be installed is disclosed.

[7] However, in the case of this conventional method, since the rocking ball has a structure that protrudes from within the groove formed at the end of the grinding tool, a vibration phenomenon occurs in the grinding tool that rotates at high speed during the grinding operation.

[8] In addition, when working with a grinder, it is difficult to grind on a generally flat surface.

There is no problem, but vibration is transmitted to the spring on the curved surface or corner, causing the grinding tool to shake, resulting in a problem of lowering work efficiency.

[9] Also, by relying on the three projections formed on the circumference of the grinding tool, 2020/175853 1»（：1^1{2020/002501 Since it is a structure that maintains adhesion, it is not possible to properly transmit power when working with a certain amount of force, but also due to friction or micro-vibration, the cohesion decreases, which is great for the operator. It has the drawback of causing psychological anxiety.

[1] In addition to this, most of the conventional technologies have the biggest drawback in that the process of attaching or detaching the grinding tool is complicated, which makes the operator cumbersome and inconvenient.

[11] In addition, since the grinding tool mounted on the holder rotates at high speed, there was no safety device to prevent accidents from being detached in advance.

Detailed description of the invention

Technical task

[12] Therefore, the present invention is to solve the above problems, and the purpose of the present invention is to be able to easily replace the polishing disk with one-touch operation, and there is no risk of separation due to improved bonding when the polishing pad is mounted, and polishing during work. It is to provide a holder for a grinder that can remove and attach the polishing pad with one touch that can reduce the vibration of the disc.

[13] Another purpose of the present invention is to prevent the separation of the polishing pad that may occur during high-speed rotation.

It is to provide a holder for a grinder that is equipped with a safety measure that can completely cut off the polishing pad with one touch.

Problem solving means

[14] A grinder holder capable of attaching and detaching a polishing pad with one touch according to the present invention to achieve the above technical task, is mounted on the rotating shaft of the grinder, and in a grinder holder capable of attaching or detaching the polishing pad, a grinder in the center A coupling hole that can be coupled with the rotation axis of the shaft is formed, and a guide path with a shape opened toward the outside is formed on both sides, a through hole is formed on the upper surface of the upper side of the guide path, and a pair of around the coupling hole on the lower surface is formed. Half-circular

The body on which the rotation guide jaw is formed; A locking means which is slid along the guide path, an upper locking jaw is formed on one side to be protruded upward through the through hole, and a lower pressing jaw extending downward on the other side is formed; Compression spring provided between the locking means and the coupling hole to elastically support the locking means; made in a disk shape, and an insertion hole into which the rotation guide jaw is inserted is formed in the center so that it is rotatable, and on both sides to the lower pressing jaw A protruding fixing protrusion is formed, and a safety piece on which a rotation tag protrudes is formed on one side; and a cover plate covering the lower part of the upper body; and the lower pressing jaw is hooked on the fixing protrusion to release the locking means. When the locking means is pressed after holding the rotating tag and rotating the safety piece, the upper locking jaw can be released from the mounting hole.

[15] Here, edge grooves are further formed on both sides of the insertion hole, and on the inside of the rotation guide jaw, it is formed in a semicircular shape, and is inserted between the rotation guide jaws at one end. 2020/175853 1»（：1^1{2020/002501 As the other end is extended, a torsion spring that retracts into the edge groove and elastically supports the rotation of the safety convenience can be further provided.

[16] And the locking means, a body part that is slid along the guide path in a state accommodated in the guide path, and an upper pressing jaw that is formed on one side of the body part and is exposed to the outside of the guide but extends to the upper part. Extending downward

It can be made by including a pressing part composed of a lower pressing jaw and a locking part formed vertically on the other ie of the body part, protruding upward through the through hole, and forming an upper locking jaw outward at the top and a lower locking jaw formed at the bottom. have.

[17] According to another embodiment of the present invention, in a grinder holder that is mounted on a rotating shaft of a grinder and capable of attaching or detaching a polishing pad, a coupling hole that can be coupled to the rotating shaft of the grinder is formed in the center, and on the lower surface Guide paths with a shape opened toward the outside are formed on both sides centering on the coupling hole, a fixing groove is formed toward the guide path so that an elastic means can be inserted outside of the coupling hole, and the upper part is in communication with the guide path. The body having a through hole formed on the surface; A support plate that is coupled to the lower part of the body to form a sliding space so that the locking means can slide between the upper pipe tube hole; the support plate is supported by the support plate so that the left and right guides are not departed from the lower side. The body is guided by the left and right sides of the body and slides along the guideway while being accommodated in the guideway, a pressing part formed on one side of the body and exposed to the outside of the guideway, and vertically at the other side of the body part. A locking means formed as a locking means that protrudes upward through the upper pipe through hole and has a locking jaw formed at the upper end; It is provided between the fixing groove of the main body and the fixing groove formed in the locking means to elastically support the locking means. Compression spring; including, the locking jaw is mounted while being caught in the mounting hole formed in the polishing pad, or by pressing the locking means, the locking jaw can be removed while being disengaged from the mounting hole.

[18] At this time, fixing grooves in which both ends of the compression spring can be inserted and fixed may be formed on the outer peripheral surface of the coupling hole and the inner surface of the body part.

[19] In addition, mounting projections that can be inserted into the mounting holes of the polishing pad may be formed on the upper surface of the upper body.

[2] On the other hand, between the upper pipe hole and the mounting protrusion, a pushing means for contacting the polishing pad while being exposed upward to the upper surface of the upper upper body and supporting the lower part elastically can be further provided.

[21] One embodiment of the pushing means is inserted into the pushing hole formed in the upper body

A pushing member, a pushing spring supporting the pushing member from a lower end, and the

It may consist of a pushing ball inserted into the top of the pushing member.

Another embodiment of the pushing means may be an elastic member that is inserted and mounted in a pushing hole formed in the upper body and partially exposed upward to the upper surface of the body. 2020/175853 1»（：1/10公020/002501 Effect of invention

The effects of the present invention are as follows.

First, the polishing pad can be attached and detached with one touch; that is, when the polishing pad is mounted, it can be attached by a single operation of pressing the polishing pad, and when detaching the polishing pad, it can be detached by a single operation of pressing the pressing part. Very convenient to replace.

[25] Second, since the safety piece is mounted, safety is greatly improved because there is no risk of separation even if the installed polishing pad rotates at high speed.

[26] Third, since the polishing pad is attached very firmly by the locking jaw and the pushing means,

Even if it rotates at high speed, there is almost no risk of separation or detachment of the polishing pad, and vibration generated during polishing or cutting is also absorbed. Particularly, the separation of the polishing pad is much easier due to the elasticity of the pushing means when removing the polishing pad.

Brief description of the drawing

1 is a perspective view showing the appearance of a general polishing pad

2 is a perspective view showing a holder of a grinder capable of attaching and detaching a polishing pad with one touch according to an embodiment of the present invention;

Figure 3 is an exploded perspective view of the present invention shown in Figure 2

Figure 4 is a cross-sectional view of the present invention shown in Figure 2

Figure 5 is a perspective view showing the internal structure of the main body of the present invention shown in Figure 3 Figure 6 is a bottom plan view showing a state in which the safety piece of the present invention is installed

7 is a safety and convenience operating state diagram of the present invention

8 is a perspective view showing a holder of a grinder capable of attaching and detaching a polishing pad with one touch according to another embodiment of the present invention.

3 ]] ]]]]]]]] ]]

47902453381; Fig. 9 is a cross-sectional view of the present invention shown in Fig. 8

44222223333301

36; FIG. 10 is a perspective view showing the internal structure of the main body of the present invention shown in FIG.

37; Figure 11 is a perspective view showing the locking means of the present invention shown in Figure 8

38; Fig. 12 is a cross-sectional view showing the pushing means of the present invention

39; Figure 13 is an operational state diagram of the present invention

Best mode for carrying out the invention

Hereinafter, an embodiment according to the present invention will be described in more detail with reference to the accompanying drawings.

For reference, the description with reference to the drawings is for easier understanding of the present invention, and the scope of the present invention is not limited by it. And in describing the present invention, a detailed description of the related known technology is the gist of the present invention. If it is judged that it may be unnecessarily blurred, detailed explanations are omitted.

42] Fig. 1 is a perspective view showing the appearance of a general polishing pad, and Fig. 2 shows a holder of a grinder capable of attaching and detaching the polishing pad with one touch according to an embodiment of the present invention. 2020/175853 1» (: 1/10公020/002501 is a perspective view showing, FIG. 3 shows an exploded perspective view of the present invention shown in FIG. 2, and FIG. 4 shows a shosho cross-sectional view of the present invention shown in FIG.

The present invention relates to a grinder holder capable of attaching and detaching the polishing pad with one touch, which has a structure that allows the polishing pad to be attached or detached with a single operation while mounted on the rotary shaft of the grinder.

44] For reference, in the present invention, the term “polishing pad” refers to a grinding tool that is attached to a grinder holder to polish, cut or cut a workpiece, and refers to a term encompassing polishing discs, cutting pads, cutting blades, circular saws, etc. Put.

When the present invention refers to the bar shown, largely the main body 100, the locking means 200,

It may be configured to include a compression spring (300), a safety piece (400) and a cover plate (600), and a torsion spring (500) may be further included.

First, with reference to Fig. 5 together, a description will be given of the main body. Fig. 5 is a perspective view showing the internal structure of the main body of the present invention shown in Fig.

[47] The main body 100 forms a circular plate shape having a uniform thickness as a whole.

[48] In the center of the phase body 00), a coupling hole (0) that can be combined with the rotary shaft (not shown) of the grinder is formed. The coupling hole (0) is screwed with the rotary shaft of the grinder by forming a female thread on the inner peripheral surface. Can be concluded in a way that is

In addition, a guide 120 is formed outwardly from the coupling hole 110 of the upper body 100.

The guideway 120 has a shape that is opened outward with a certain width. The guideway 120 may be arranged such that a pair of the guideway 120 centering on the coupling hole 0 faces from both sides.

[5] On the other hand, a through hole 130 is formed in the upper surface of the upper body 100.

]] The through hole 130 is 90 5 of the each guideway 120 so as to communicate with the guideway 120

4 5 5 5527 ⁴ ⁴³⁵ 1 is formed on the upper side. The upper pipe tube hole 130 is provided to penetrate and expose the locking portion 230 of the locking means 200 to be described later.

The front and rear width of the through hole 130 is formed to be longer than the width of the locking portion 230 to provide a clearance that allows the locking portion 230 to move forward and backward (radial direction of the body).

Then, stepped portions 140 are formed on both sides of the lower surface of the through hole 130.

The stepped jaw 140 can be guided by the body portion 210 of the locking means 200 is seated, and holds the body portion 0 so as not to deviate upward.

In addition, the outer circumference of the coupling hole (0), in other words, the inner circumferential surface of the upper pipe tube hole 130 is formed with a fixing groove 160 into which one end of the compression spring 300, which will be described later, can be inserted. The fixing groove 160 is formed to face 120 by the guide.

In addition, a rotation guide jaw 180 is formed in the center of the lower surface of the upper body 100. The rotation guide jaw 180 is a component for supporting the installation of the torsion spring 500 to be described later.

Specifically, the rotation guide jaw 180 has a semicircular shape, and a pair of 2020/175853 1» (：1/10公020/002501 It is arranged so as to rotate around the coupling pole 110 as a center. That is, the rotation guide jaw 180 is formed to surround the coupling hole 110. .

At this time, the rotation guide jaw 180 is spaced apart from the inside of any one of the

A stopper 181 that prevents the torsion spring 500 from being separated may be formed.

In addition, a socket 190 may be formed on the lower surface of the upper body 100 so that the cover plate 600, which will be described later, can be fitted. Or, a fitting jaw is formed along the edge of the lower surface of the upper body 100 to form the cover. The plate 600 can be closed in a force-fitting manner.

60] In addition, between the guideway 120 of the lower surface of the upper body 100, a limit groove that restricts rotation only within a certain angle while the rotation tag 440 of the safety piece 400 to be described later is inserted It is desirable that (150) be formed.

Next, the locking means will be described.

62] The locking means (200) is accommodated in the guideway (120) so that it can be moved forward and backward

While moving, it corresponds to a configuration for mounting by locking the polishing pad 10 or detaching it by unlocking, and includes a body part (0), a pressing part (220), and a locking part (230), and is roughly as shown. It may have a shape such as ' ¹ ·'.

The body part (0) may be a block shape of an approximately rectangular parallelepiped.

It is accommodated by 120 as a guide, and the sliding moves.

The body part (0) is supported by the cover plate (600) and does not deviate downward, and the left and right are guided by the left and right sides of the guide 120, and both ends are guided by the stepped portion 140 of the body 100. It is seated and caught and slides stably without deviating from the top.

And in front of the body portion 210, one end of the compression spring 300 to be inserted

]]]]]]]]]]] A fixing groove 211 is formed. The fixing groove 211 of the body part 210 is above

94790236881

777556666666 _{73 It} meets the fixing groove (160) of the main body 00) and must be arranged on the same axis.

A pressing part 220 is formed on one side of the body part (0).

The pressing part 220 corresponds to a configuration in which a worker can press with a finger, is formed at the rear end of the body part 210 and is outside of the body part 210 with the guide.

It is exposed and formed to protrude.

The pressing part 220 may be composed of an upper pressing jaw 221 extending upward of the body part 210 and a lower pressing jaw 222 extending downward of the body part 0. Therefore, the pressing part 220 is caught without being brought into the inside of the guideway 120.

On the other side of the body part (0), a locking part 230 is formed vertically.

The locking part 230 passes through the through hole 130 and protrudes upward. In addition, the upper end of the locking part 230 may be formed in a “gi” shape by forming a locking jaw 231.

The locking jaw 231 is formed toward the outside, that is, the pressing part 220 and the 2020/175853 1»（：1/10公020/002501 The width of the locking jaw (231) is formed shorter than the width of the mounting hole (11) of the polishing pad (10), so that the locking jaw (231) is the mounting hole of the polishing pad (10). (11) must be able to pass.

An inclined surface 232 is formed on one side of the locking jaw 231.

[75] When the inclined surface 232 passes through the mounting hole 11, the locking part 230

The locking part 230 moves backward while the inner circumferential surface of the mounting hole 11 presses the inclined surface 232 so that the locking jaw 231 is easily caught in the mounting hole.

Next, the compression spring 300 is provided between the body portion 210 of the locking means 200 and the outer circumferential surface of the coupling hole 110 of the main body 100 to elastically support the locking means 200.

[77] The compression spring 300 can use a coil spring, the

Both ends of the compression spring 300 are installed in a state inserted into the fixing groove 160 of the base body 100 and the fixing groove 211 of the body part 210, so that they do not swing from side to side.

Since the compression spring 300 is pushing the body 210 in a compressed state, the body part 0 is retracted to the outermost angle of the 120 by the guide, but the locking part ( 230) is caught and stops without retreating any more.

[79] In this state, when the pressing part 220 is pressed, the body part (0) is

As it advances toward the coupling hole (0), the locking part 230 may also move adjacently toward the coupling hole (0).

Next, the safety piece 400 will be described with reference to FIG. 6. FIG. 6 is a bottom plan view showing a state in which the safety piece of the present invention is installed.

[8 The safety piece 400 is designed to prevent the risk of unlocking by advancing the locking means 200 when rotating at high speed with the polishing pad 10 installed.

S]] It is a safety device.

2451

7 7 8 88806 ⁷⁸ 11 That is, the safety piece 400 is installed in the upper body 100 to fix the locking means 200 so that it does not advance, and is formed in a circular disk shape as shown.

83] And in the center of the safety piece 400 is a circular insertion hole (four 0) is formed, the insertion hole 410, the rotation guide jaw 180 is inserted and received.

The inner diameter of the insertion hole (four 0) is formed longer than the outer diameter formed by the rotation guide jaw 180.

In addition, edge grooves 420 are further formed on both sides of the insertion hole 410. The edge grooves 420 may be formed outwardly from the insertion hole (four 0) so that a pair of them face each other. In addition, fixing protrusions 430 are formed on both sides of the edge of the safety piece 400. The length of the fixing protrusion 430 is extended to the lower pressing jaw 222. Therefore, the fixing protrusion 430 is the same as the above. When positioned on the lower pressing jaw 222, the lower pressing jaw 222 is caught by the fixing protrusion 430, so that the locking means 200 is forcibly blocked from moving forward. 2020/175853 1» (:1/10公020/002501 On the other hand, a rotation tag 440 is further formed in one of the safety pieces 400). The rotation tag 440 may also have a protruding shape, and may be positioned between the fixing protrusions 430, and a pair may be formed to face each other.

88] The rotating tag 440 is a means for rotating the safety piece 400 while the operator is holding it by hand, and is preferably formed long enough to be inserted into the limit groove 150 and exposed to the outside.

At this time, the rotation tag 440 is limited to rotate only within the limit groove 150.

[9] Next, the torsion spring 500 will be described.

[91] The torsion spring 500 elastically supports the safety piece 400 in the rotational direction

Configuration.

The torsion spring 500 may be formed in a semicircular wire shape as shown in FIGS. 3 and 7, and may have a shape in which a first bent portion 510 and a second bent portion 520 bent at both ends are formed.

At this time, the torsion spring 500 is seated and supported on the inside of one of the rotation guide jaws 180. The preferred one is installed so as to be fitted between the stopper 181 and the rotation guide jaw 180. It can be equipped stably.

Here, the first bent part 510 of the torsion spring 500 is inserted and caught in the gap between the rotation guide jaws 180, and the second bent part 520 is relative to the first bent part 510 It is formed and extended to be longer and is installed to be inserted into the edge groove 420.

[95] Therefore, when the safety piece 400 rotates, the first bent portion (0) is

It is supported by the rotation guide jaw 180, and the second bent portion 520 is elastically supported in the rotational direction in which the safety piece 400 is to be returned to its original position by being caught in the edge groove 420. In other words, the safety piece 400 is rotated in one direction and then 7 961 to the torsion spring 500

It can be returned to its original position by 9 9 9 988 829611.

Next, the cover plate 600 is configured to cover and close the lower portion of the upper body 100, and may be formed in a circular plate shape.

And the fitting protrusion 610 that can be fitted to the socket 190 formed in the upper body 100 is formed on the cover plate or the entire cover plate 600 is formed on the upper body (^0). It can be closed by force-fitting.

Therefore, the cover plate 600 is slid while keeping the state in which the locking means 200 is accommodated in the guideway 120 while sealing the lower part of the upper body 100, and the safety piece is fixed inside.

00] In the present invention, so that the mounting protrusion 170 protrudes on the upper surface of the upper base body 100

It is desirable to be formed.

The mounting protrusion 170 can be inserted into the mounting hole 11 of the polishing pad 10 together with the locking means 200, corresponding to the number of the mounting protrusion 170 and the locking means 200, the polishing pad ( 10) The mounting hole 11 is formed. 2020/175853 1»（：1^1{2020/002501

As shown, since a pair of the locking means 200 are arranged so as to be viewed from one another, the mounting protrusions 170 may also be arranged so that one pair is viewed from one another.

And correspondingly, four mounting holes 11 of the polishing pad 10 are formed.

[104] The locking means 200 is to lock the holder when the polishing pad 10 is mounted and clamp it so that it does not come off, and the mounting protrusion 170 prevents shaking or rotational vibration of the polishing pad 10 It plays a role of holding the polishing pad 10 firmly.

Hereinafter, the operation process of the present invention will be described with reference to 6 and 7. FIG. 7 is a diagram illustrating an operation state of the safety convenience of the present invention.

[106] First, the process of installing the polishing pad 10 will be described.

[107] The worker has the mounting hole 11 of the polishing pad 10, each of the locking jaw 231 and

Position it so that it corresponds to the mounting protrusion 170 and press the polishing pad 10.

[108] By the way, as shown in 7 even before pressing, first of all, the safety section 400

When the rotation tag 440 is rotated in one direction using a finger, the safety piece 400 rotates, and the fixing protrusion 430 located on the lower pressing jaw 222 by the rotation of the safety piece 400 It is released from the lower pressing jaw 222 by the temporary rotation.

[109] In this state, when the polishing pad 10 is pressed, the mounting hole 11

The inclined surface of the locking jaw 231 is pushed, and due to this, the compression spring 300 is

While being compressed, the locking part 230 moves forward.

[110] And when the mounting hole 11 enters the lower side of the locking jaw 231, the

As the compression spring 300 expands, the locking part 230 moves backward again. Eventually, the locking protrusion 231 becomes caught in the mounting hole 11, so the polishing pad 10 is fixed to the holder.

[111] In this state, hold the rotating tag 440 and reverse the safety piece 400

When rotated, the fixing protrusion 430 is positioned on the lower pressing jaw 222 to block the advance of the locking means 200. That is, even if the polishing pad 10 rotates at high speed, it is prevented from being separated from the holder.

[112] If, in the case of the torsion spring 500, the safety section 400

Since it is elastically supported by the torsion spring 500, the operator tries to return to its original position. Therefore, the operator presses the polishing pad 10 while holding the rotation tag 440 with a finger and moves the locking means 200 forward, so that it is mounted on the holder. can do.

[113] And when the rotation tag (440) is released, the safety piece () is automatically

By rotating in reverse, the fixing protrusion 430 is positioned on the pressing jaw.

[114] Next, the case of removing the polishing pad will be described.

[115] The process of detaching the polishing pad 10 is also shown in Fig. 7 while the operator holds the rotary tag 440 with a finger and turns the safety piece 400.

When the pressing part 220 of the locking means 200 is pressed, the body part 0 slides and advances, and as a result, the locking jaw 231 moves, so it is caught in the mounting hole 11 2020/175853 1» (：1^1{ 2020/002501 The upper stumbling jaw (231), which used to be removed, will be removed.

[116] If there is a torsion spring 500, the operator can remove the polishing pad 10 by pressing the pressing part 220 while holding the rotation tag 440.

[117] When the rotation tag 440 is released after detachment, as shown in FIG. 6, the

The safety piece 400 returns to its original position while rotating in the other direction by the restoring force of the torsion spring 500.

[118] That is, the present invention is mounted by pressing the polishing pad 10 once when the polishing pad 10 is mounted, and when detaching, it is possible to detach it by pressing the pressing part 220 once. It is a structure that allows the removal and installation of the grinding pad (10).

[119] And since the safety part (400) is provided, the risk of the polishing pad (10) being separated from the holder, which may occur when the polishing pad (10) rotates at high speed, can be completely prevented.

[12] Hereinafter, another embodiment of the present invention will be described.

FIG. 8 is a perspective view showing a holder of a grinder capable of attaching and detaching a polishing pad with one touch according to another embodiment of the present invention, and FIG. 9 is a cross-sectional view of the present invention shown in FIG.

[122] Another embodiment of the present invention is large body 100, support plate 700, locking means 200,

It can be configured to include a compression spring (300).

First, with reference to FIG. 10 together, a description will be given of the basic body. FIG. 10 is a perspective view showing the internal structure of the main body of the present invention shown in FIG.

[124] The main body 100 forms a circular plate shape having a uniform thickness as a whole.

[125] In the center of the upper body 100, a coupling hole (0) with female threads is formed on the inner circumferential surface so that it can be screwed with the rotary shaft 20 of the grinder.

In addition, a fitting jaw (190幻) may be formed on the lower surface of the upper body 100 so that the support plate 700 to be described later can be forcibly fitted.

[128] The guideway 120 is a shape that has a certain width and is opened outward,

A pair of mating holes (0) can be arranged to meet from both sides.

[129] On the other hand, there is a through hole 130 is formed in the upper surface of the upper body 100, the

The locking part 230 of the locking means 200, which will be described later in communication with the guide 120, is formed to pass through and expose.

[130] And stepped 140 is formed on both sides of the lower surface of the upper pipe tube hole 130

The body 310 of the locking means 200 may be seated and guided, and it catches the separation of the body 310.

[131] In addition, one end of the compression spring 300 to be described later on the outer periphery of the coupling hole 110

A fixing groove 160 facing the guide 120 is formed so that it can be inserted.

[132] Next, the support plate 700 is the upper part of the upper part of the upper part of the upper part of the upper part of the upper part of the upper part of the upper part of the upper part of the upper part of the upper part of the base body (100) 2020/175853 1»（：1^1{2020/002501 Keep the locking means (200) accepted.

[133] The support plate 700 is in the shape of a circular plate, and when coupled to the fitting jaw (190幻, the

Between the support plate 700 and the through hole 130, the locking means 200 is accommodated to form a sliding space capable of being slid. At this time, the sliding space is opened to the outside so that the locking means 200 can be exposed. .

Next, the locking means will be described with reference to FIG. 11. FIG. 11 is a perspective view showing the locking means of the present invention shown in FIG.

[135] The locking means 200 is accommodated in the guideway 120 so as to move forward and backward

It corresponds to a configuration for attaching or unlocking the polishing pad 10 while moving, and includes a body part 210, a pressing part 220, and a locking part 230, and is roughly as shown in the figure. It can be of the same shape.

The body portion 210, the pressing portion 220, the locking portion 230 is the same as described above, so a detailed description will be omitted.

Next, the compression spring 300 is provided between the body 310 of the locking means 200 and the coupling hole 110 of the main body 100 to elastically support the locking means 200.

[138] The compression spring 300 may use a coil spring, and both ends of the coil spring are inserted between the fixing groove 160 of the base body 100 and the insertion groove 311 of the body 310 It is installed in the state that it does not swing from side to side.

[139] The compression spring 300 is the same as described above, so the detailed description

I will omit it.

12 is a cross-sectional view showing the pushing means of the present invention.

[141] In the present invention, it is preferable that a pushing means 800 is further provided between the upper pipe cylinder hole 130 and the mounting protrusion 170. That is, the pushing means 800 may be provided with 2-4 pieces. .

When the polishing pad is attached, the pushing means 800 strongly pushes the polishing pad 10 from the lower side so that the polishing pad remains reliably engaged with the engaging jaws 231.

[143] To this end, as shown in Fig. 12知), the pushing means 800 is a pin-shaped

Elastically supporting the pushing member 810 and the pushing member 810 at the bottom

Inserted into the upper end of the pushing spring 830 and the pushing member 810 and provided

It may be composed of a pushing ball (820).

The pushing member 810 is vertically inserted into the pushing hole 850 formed in the upper body 100 and is disposed protruding from the upper surface of the upper single upper body 100. And the pushing The upper end of the member 810 may be provided in a protruding state without the pushing ball 820 being separated.

And between the lower end of the pushing member 810 and the support plate 700, a pushing spring 830 is interposed.

The pushing spring 830 may be provided to be inserted into the lower portion of the pushing member 810. 2020/175853 1»（：1^1{2020/002501

[147] The pushing member (810) by the pushing spring (830) of the upper body (100)

It rises to the upper surface and maintains the state where the pushing ball 820 slightly protrudes, and when the polishing pad 10 is attached, the pushing ball 820 is pressed by the polishing pad 10 and descends, and the pushing ball ( Maintains a state in which the polishing pad 10 is strongly pushed upward by an elastic force while the 820 is in contact with the lower surface of the polishing pad 10.

Therefore, the polishing pad 10 is caught while being completely in close contact with the locking jaw 231.

On the other hand, as another embodiment of the pushing means 800, it may be a structure in which the elastic member 840 is inserted into the pushing hole 850 (as shown in Figure 12).

The elastic member 840 may be made of various elastic materials such as rubber, silicon, and synthetic resin.

[151] At this time, the elastic member 840 is attached to and coupled to the bottom of the pushing hole 850

It is fixed so as not to be separated, and a part of the pushing hole 850 protrudes upward. The protruding height may be about 0.1 0.4111111.

Since the pushing means 800 elastically supports the polishing pad 10, it also functions to absorb vibration while the polishing pad 10 rotates at high speed when the grinder is actually operated.

[153] In addition, in the case of releasing the locking means 200 when removing the polishing pad 10

While pushing the polishing pad (10), it can be easily detached and detached.

Hereinafter, the operation process of the present invention will be described with reference to 13 together. FIG. 13 is an operation state diagram of another embodiment of the present invention.

First, in the process of attaching the polishing pad 10, the polishing pad 10 is positioned so that the mounting holes 11 of the polishing pad 10 correspond to the locking protrusions 231 and the mounting protrusions 170, respectively. When pressed, the mounting hole 11 of the polishing pad 10 pushes the inclined surface of the locking jaw 231, and thus the compression spring is compressed, and the locking part 330 advances.

[156] And when the mounting hole 11 enters the lower side of the locking jaw 231, the

As the compression spring expands, the locking part 330 moves backward. Eventually, as shown in FIG. 13, the locking jaw 231 becomes caught in the mounting hole 11

The polishing pad 10 is fixed without coming off.

[157] Of course, by the elastic force of the pushing spring 830, the pushing ball 820 or the

Since the elastic member 840 pushes the lower surface of the polishing pad 10, this fixing force is further improved.

[158] The process of detaching the polishing pad 10 is shown in Fig. 13 (as shown in the figure, the operator

When the pressing portion 320 of the locking means 200 is pressed with a finger, the body portion 310 slides and advances, and the locking jaw 231 moves due to this, so that the locking jaw that was caught in the mounting hole 11 (231) Desorption while leaving.

At this time, since the pushing means 800 elastically pushes the polishing pad 10, it can be removed more easily.

[16] Although the representative embodiments of the present invention have been described with reference to the pages above, 2020/175853 1»（：1^1{2020/002501 If you have ordinary knowledge in the field to which the invention belongs, it will be possible to perform various applications and modifications within the scope of the invention based on the above information.

Therefore, the scope of the rights of the present invention is limited to the described embodiments and should not be defined, and should not be defined by the claims to be described later, as well as those equivalent to the claims.

Claims

2020/175853 1»（：1/10公020/002501 Claims

[Claim 1] In a grinder holder that is mounted on the rotary shaft of the grinder and can attach or detach a polishing pad,

A coupling hole that can be combined with the rotary shaft of the grinder is formed in the center, a guideway in the shape of opening to the outside is formed on both sides, a through hole is formed on the upper surface of the upper side of the guideway, and around the coupling hole on the lower surface There is a body in which a pair of semicircular rotation guide jaws are formed; A locking means which is slid along the guide path, an upper engaging jaw is formed to protrude upward through an upper pipe tube hole on one side, and a lower pressing jaw extending downward on the other side is formed;

A compression spring provided between the locking means and the coupling hole to elastically support the locking means;

A safety piece formed in the shape of a disk and has an insertion hole into which the rotation guide jaw is inserted in the center so as to be rotatable, and fixing protrusions protruding to the lower pressing jaw are formed on both sides, and a rotation tag is projected on one side; And

A cover plate covering the lower part of the body; including, the lower pressing jaw is caught on the fixing protrusion to prevent the locking means from being released, and after holding the rotation tag and rotating the safety piece, the locking means A grinder holder capable of removing and installing the polishing pad with one touch, characterized in that the upper locking jaw can be released from the mounting hole when pressed.

[Claim 2] The method of claim 1,

Edge grooves are further formed on both sides of the insertion hole,

Inside the rotation guide jaw,

It is formed in a semicircular shape, one end is inserted between the rotation guide jaws, and the other end extends and enters the edge groove, and a torsion spring that elastically supports the rotation of the safety convenience is further provided. Possible grinder holder.

[Claim 3] In paragraph 2,

The locking means,

Consisting of a body portion that is accommodated in the guideway and slides along the guideway, and an upper pressing jaw that is formed on one side of the body portion and exposed to the outside of the guideway, but extends to the upper portion and a lower pressing jaw that extends to the lower portion. Including a pressing portion that is formed vertically on the other ie of the body portion and protrudes upward through the upper tracheal hole, and the upper locking jaw is formed outwardly at the top and the lower locking jaw is formed at the bottom. 2020/175853 1»（：1^1{2020/002501 One-touch grinding pad can be removed and mounted on a grinder holder.

[Claim 4] In a grinder holder that is mounted on the rotating shaft of the grinder and can attach or detach the polishing pad,

A coupling hole is formed in the center that can be coupled with the rotating shaft of the grinder, and guide paths in the shape of opening outward are formed on both sides with the coupling hole as the center on the lower surface, so that the elastic means can be inserted outside the coupling hole. A main body in which a fixing groove is formed toward the guideway, and a through hole is formed on an upper surface to communicate with the guideway;

A support plate coupled to the lower part of the main body to form a sliding space so that the locking means can slide between the upper pipe cylinder hole; A body that is supported by the support plate and does not deviate to the lower side, and is guided by the left and right sides of the guide path and is accommodated in the guide path and slides along the guide path, and is formed on one side of the body part to the guide. A locking means including a pressing portion exposed to the outside of the furnace, and a locking portion formed vertically on the other side of the body portion and protruding upwardly through the upper pipe tube hole, and having a locking jaw formed at the upper end thereof;

A compression spring is provided between the fixing groove of the main body and the fixing groove formed in the locking means to elastically support the locking means, so that the locking jaws are mounted while being caught in the mounting holes formed in the polishing pad, or the locking means is provided. A grinder holder capable of attaching and detaching the polishing pad with one touch, characterized in that the gripping jaw is removed from the mounting hole by pressing it.

[Claim 5] According to claim 3 or 4,

A grinder holder capable of attaching and detaching the polishing pad with one touch, characterized in that fixing grooves that can be inserted and fixed at both ends of the compression spring are formed on the outer circumferential surface of the coupling hole and the inner surface of the body.

[Claim 6] In clause 5,

A grinder holder capable of attaching and detaching the polishing pad with one touch, characterized in that a mounting protrusion that can be inserted into the mounting hole of the polishing pad is further formed on the upper surface of the body.

[Claim 7] The method of claim 6,

A grinder holder capable of attaching and detaching the polishing pad with one-touch, characterized in that a pushing means for contacting the polishing pad while being exposed upwardly to the upper surface of the upper upper body and elastically supporting the lower part is further provided between the through hole and the mounting protrusion.

[Claim 8] The method of claim 7,

The pushing means, 2020/175853 1»（：1^1{2020/002501 A pushing member inserted into the pushing hole formed in the body, a pushing spring supporting the pushing member from the bottom, and a pushing ball inserted into the upper end of the pushing member. A grinder holder that allows the removal and installation of the polishing pad with one touch.

[Claim 9] In paragraph 7,

The nushing means,

A grinder holder capable of attaching and detaching a polishing pad with one touch, characterized in that it is an elastic member that is inserted and mounted in the pushing hole formed in the body and partially exposed upward to the upper surface of the upper body.