KR102333972B1 - Torque transfer apparatus improved assembly - Google Patents

Abstract

The present invention is a rotational force transmitting device with improved assembly, and in more detail, includes a rotating body and a coupling coupled to the rotating body, and by pressing and rotating the rotating body, the rotating body and the coupling can be separated. characterized in that

Description

Torque transfer apparatus improved assembly

The present invention relates to a rotational force transmission device with improved assembling property, and more particularly, to a rotational force transmission device with improved assembling property, which enables assembly and disassembly of a rotating body only by pressing and rotating, thereby making it easy to replace a rotating body.

A typical grinder among grinding machines is a machine that grinds or cuts a workpiece by installing a rotating grinding wheel. When using the grinder as described above, it is necessary to replace the rotating body after using it for a certain period of time due to wear of the rotating body.

For example, Korean Patent Publication No. 10-2103754 (April 17, 2020) discloses a hand grinder capable of increasing processing precision.

However, in the conventional case, when the wear of the rotating body occurs due to the use of the grinder, there is a hassle of having to disassemble the components for fixing the rotating body or transmitting the rotational force to the rotating body in order to replace the rotating body. That is, after releasing and disassembling the screw in order to replace the rotating body, the time required for a series of processes of installing and re-joining the new rotating body is large, and in the case of an unskilled person, the assembling is not performed perfectly. There was a problem that could cause a safety accident by operating it.

Republic of Korea Patent Publication No. 10-2103754 (2020.04.17)

The present invention has been devised to solve the problems of the prior art as described above, and it is possible to assemble and disassemble the rotating body only by pressing and rotating it, so it is easy to replace the rotating body, and the combination of the rotating body is performed perfectly. An object of the present invention is to provide a rotational force transmission device with improved assembling property that can be checked.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems to be solved by the present invention not mentioned here are to those of ordinary skill in the art to which the present invention belongs from the description below. can be clearly understood.

In the rotational force transmission device with improved assembly according to a preferred embodiment of the present invention, comprising a rotating body and a coupling coupled to the rotating body, and rotating the rotating body by pressing the rotating body, thereby connecting the rotating body and the coupling. It is characterized in that it can be separated.

In addition, the rotating body according to a preferred embodiment of the present invention includes a coupling hole formed in the central portion of the rotating body, the coupling, the upper surface of which is formed in a shape corresponding to the first coupling hole and a coupling member, wherein the first coupling member includes a plurality of first protrusions formed to protrude downward from the upper surface of the first coupling member, and after the first coupling member is inserted into the coupling hole By rotating, it is characterized in that the coupling and the rotating body are coupled.

In addition, the first coupling member according to a preferred embodiment of the present invention includes a plurality of second protrusions formed on a lower surface of the first coupling member in an outward direction of the first coupling member, the coupling The silver further includes a second coupling member having a main hole having a shape corresponding to the coupling hole on an upper surface thereof, wherein the second protrusion is formed when the first coupling member is inserted into the main hole, the second coupling member It is characterized in that it prevents the separation downward of the first coupling member.

In addition, the second coupling member according to a preferred embodiment of the present invention includes an edge portion formed along the edge of the upper surface of the second coupling member, the edge portion, protruding upward of the second coupling member It is formed by being in contact with the lower surface of the rotating body, characterized in that the vibration of the rotating body is minimized when the rotating body is rotated.

In addition, the second coupling member according to a preferred embodiment of the present invention includes a plurality of handle portions formed to protrude outwardly of the second coupling member on the side surface of the second coupling member, the handle portion, It is characterized in that the rotation of the coupling can be easily stopped.

By means of solving the above problems, the rotational force transmitting device with improved assembly of the present invention is effective in enabling the easy replacement of the rotating body by allowing the coupling and separation of the rotating body and the coupling only by pressing and rotating. .

In addition, the rotating force transmitting device with improved assembly of the present invention can check whether the rotating body and the coupling are perfectly coupled through the gap between the second coupling member and the rotating body, so that the rotating body and the coupling are not completely assembled. It is effective in preventing accidents that may occur while rotating.

In addition, the rotational force transmitting device with improved assembly of the present invention is effective in reducing vibrations generated during rotation regardless of the flatness of the rotating object by forming an edge portion.

In addition, the assembled rotational force transmitting device of the present invention is effective in allowing the rotation of the coupling to be easily stopped by pressing the handle when the rotating body is worn.

1 is an exploded view showing the configuration of a rotational force transmitting device with improved assembly according to a preferred embodiment of the present invention.
Figure 2 is a perspective view showing the state of the rotating body of the rotational force transmission device with improved assembly according to a preferred embodiment of the present invention.
Figure 3 is a perspective view showing the appearance of the first coupling member of the rotational force transmission device with improved assembly according to an embodiment of the present invention.
Figure 4 is a perspective view showing the state of the second coupling member of the rotational force transmission device with improved assembly according to a preferred embodiment of the present invention.
Figure 5 is a perspective view showing the state of the third coupling member of the rotational force transmission device with improved assembly according to a preferred embodiment of the present invention.
Figure 6 is a perspective view showing a state of the fourth coupling member of the rotational force transmission device with improved assembly according to a preferred embodiment of the present invention.
Figure 7 is a perspective view showing the state of the fifth coupling member of the rotational force transmission device with improved assembly according to a preferred embodiment of the present invention.
8 is a perspective view showing a state in which the coupling of the rotational force transmitting device with improved assembly properties is coupled according to a preferred embodiment of the present invention.
9 is a perspective view illustrating a process in which a rotating body and a coupling of a rotating force transmitting device having improved assembly properties are coupled according to a preferred embodiment of the present invention.

Terms used in this specification will be briefly described, and the present invention will be described in detail.

The terms used in the present invention have been selected as currently widely used general terms as possible while considering the functions in the present invention, but these may vary depending on the intention or precedent of a person skilled in the art, the emergence of new technology, and the like. Therefore, the term used in the present invention should be defined based on the meaning of the term and the overall content of the present invention, rather than the name of a simple term.

In the entire specification, when a part “includes” a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art can easily carry out the embodiments of the present invention. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein.

Specific details including the problem to be solved for the present invention, the means for solving the problem, and the effect of the invention are included in the embodiments and drawings to be described below. Advantages and features of the present invention, and a method for achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings.

Referring to FIG. 1 , a rotational force transmitting device with improved assembly ability according to a preferred embodiment of the present invention includes a rotating body 100 and a coupling 200 coupled to the rotating body 100 .

First, the object to be rotated 100 is provided. Referring to FIG. 2 , the object to be rotated 100 includes a circular blade 130 for cutting or grinding a workpiece and a disk 120 supporting the blade 130 . In more detail, the blade 130 is in direct contact with the workpiece to receive rotational force from the coupling 200 to trim the surface of the workpiece or perform a cutting operation. For example, the blade 130 may be formed of a cutting stone, a diamond blade, a tile blade, a saw blade, a panel blade, wheel paper, an epoxy urethane removal blade, and the like.

In addition, the disk 120 has a circular cross section and is formed to form a concentric circle with the blade 130 . That is, the blade 130 is formed in a hollow, and the disk 120 is provided in the center of the hollow. Accordingly, the blade 130 is formed along the outer circumferential surface of the disk 120 in the outward direction of the disk 120 . In this case, the disk 120 is formed to have a greater thickness than the blade 130 , and the diameter of the upper surface of the disk 120 is larger than the diameter of the lower surface of the disk 120 . Accordingly, the disc 120 and the blade 130 can be easily distinguished.

In addition, the rotating body 100 further includes a coupling hole 110 formed in the central portion of the rotating body 100 . In more detail, the coupling hole 110 has a sector-shaped space portion 111 and a trapezoid-shaped protrusion 112 in a central portion of the disk 120 in a plurality of each, based on the center of the disk 120 . is formed in a radially arranged shape. Accordingly, when the rotating body 100 and the coupling 200 are coupled, the contact surface of the rotating body 100 and the coupling 200 is formed in an oblique line so that they can be more firmly coupled. For example, when the protrusion 112 is formed in a rectangular shape, the end and the base of the protrusion 112 have the same width, so that the strength of the base of the protrusion 112 is reduced, increasing the risk of breakage, and the avoidance The coupling of the whole 100 and the coupling 200 is formed in a straight line, so that the contact area is reduced. Accordingly, the protrusion 112 is formed in a trapezoidal shape.

Next, the coupling 200 is provided. The coupling 200 is selectively coupled to the rotating body 100 as needed, and serves to transmit a rotational force to the rotating body 100 .

In this case, the coupling 200 includes a first coupling member 210 whose upper surface is formed in a shape corresponding to the coupling hole 110 .

More specifically, referring to FIG. 3 , the first coupling member 210 is formed of a hollow shaft 216 in a cylindrical shape, and when the rotating body 100 and the coupling 200 are coupled, the coupling hole It is provided in a shape corresponding to the coupling hole 110 so as to be inserted into the 110 . That is, the upper surface of the first coupling member 210 has a sector-shaped protruding part 213 and a trapezoidal-shaped recessed part 214, respectively, in a plurality of radially with respect to the center of the first coupling member 210 . It is formed in an arranged form. At this time, the outer circumferential surface of the protruding portion 213 is formed to be rounded to minimize the occurrence of a safety accident when the operator handles the first coupling member 210 .

Also, the first coupling member 210 includes a plurality of first protrusions 211 protruding downward from the upper surface of the first coupling member 210 . That is, the first protrusion 211 is formed to protrude downward from one end of the protruding portion 213 . Accordingly, the first coupling member 210 is rotated in one direction after being inserted into the coupling hole 110 so that the coupling 200 and the rotating body 100 are coupled. In other words, the first coupling member 210 is rotated after being inserted into the coupling hole 110 so that the first protrusion 211 is caught by the protrusion 112 , so that the first coupling member 210 and The object to be rotated 100 is coupled. Through this, it is possible to prevent the rotating body 100 from being separated from the coupling 200 by centrifugal force when the coupling 200 is suddenly stopped. For example, the first protrusion 211 may be formed to protrude 2 mm downward from the protruding portion 213 .

In addition, the first protrusion 211 has a rounded outer circumferential surface to prevent interference with the protrusion 112 when the first coupling member 210 is rotated in one direction while being inserted into the coupling hole 110 . Minimize In other words, by rotating the first coupling member 210 in a state where the end of the first protrusion 211 is positioned higher than the protrusion 112 , the first protrusion 211 and the protrusion 112 do not interfere. can be combined so as not to In addition, even when the first coupling member 210 is rotated in a state in which the first coupling member 210 is not completely inserted, the outer circumferential surface of the first protrusion 211 is formed to be round, so that the first protrusion 211 is formed. It is possible to minimize the occurrence of damage or scratches due to collision with the protrusion 112 . In addition, the outer circumferential surface of the first protrusion 211 is formed to be round, so that when the first coupling member 210 is inserted or rotated into the coupling hole 110 , the operator's hand and the first protrusion 211 are It is possible to prevent safety accidents such as abrasions due to interference.

In addition, the first coupling member 210 further includes a support 215 that extends downwardly at the other end of the protruding portion 213 . When the first coupling member 210 and the rotating body 100 are coupled, the support 215 comes into contact with the protrusion 112 to release the coupling between the first coupling member 210 and the rotating body 100 . It plays a supporting role in preventing this from happening. In this case, the distance between the first protrusion 211 and the support 215 is formed to be similar to the length of the base of the protrusion 112 . That is, when the first coupling member 210 and the rotating body 100 are coupled, the protrusion 112 is inserted into the space between the first protrusion 211 and the support 215 . At this time, the protrusion 112 allows the first coupling member 210 and the rotating body 100 to be compactly coupled to each other while in contact with the outer circumferential surface of the hollow shaft 216 .

In addition, the first coupling member 210 includes a plurality of second protrusions 212 formed on the lower surface of the first coupling member 210 in an outer direction of the first coupling member 210 . That is, the second protrusion 212 is formed at the lower end of the support 215 to protrude outwardly of the first coupling member 210 . In other words, the second protrusion 212 is formed to protrude outwardly from the support 215 , so that the first coupling member 210 serves as a stopping protrusion to prevent the coupling hole 110 from passing through. will be.

In addition, when the first coupling member 210 is inserted into the main hole 221 to be described later, the second protrusion 212 has a second coupling member 220 to be described later below the first coupling member 210 . to prevent escape to

Next, the coupling 200 further includes a second coupling member 220 in which a main hole 221 having a shape corresponding to the coupling hole 110 is formed on the upper surface. The second coupling member 220 allows the first coupling member 210 and the rotating body 100 to more firmly maintain the coupling.

In more detail, referring to FIG. 4 , the second coupling member 220 is hollow in the shape of a disk, and the main hole so that the first coupling member 210 can be inserted into the main hole 221 . 221 is provided in a shape corresponding to the upper surface of the first coupling member 210 . That is, the main hole 221 has a sector-shaped depression point 225 and a trapezoidal shape protruding point 224 protruding toward the center of the second coupling member 220, respectively, in a plurality of the second coupling member ( 220) is formed in a radially arranged form based on the center. Accordingly, the first coupling member 210 is inserted into the main hole 221 in a state where the first coupling member 210 is positioned below the second coupling member 220 .

In addition, the second coupling member 220 includes an edge portion 222 formed along the edge of the upper surface of the second coupling member 220, the edge portion 222 is the second coupling member (220) 220) is formed to protrude upward, so that it comes into contact with the lower surface of the rotating body 100 to minimize vibration of the rotating body 100 when the rotating body 100 rotates. That is, the edge portion 222 maintains a state in contact with the lower surface of the disk 120 to reduce the vibration of the disk 120 in the vertical direction when the disk 120 is rotated. For example, when the entire upper surface of the second coupling member 220 is in contact with the object 100 to be rotated, the rotation of the object 100 cannot be smoothly performed, and the surface of the blade 130 is If it is not formed smoothly, the upper surface of the second coupling member 220 may be damaged. Accordingly, the upper end of the edge portion 222 is formed to have a smooth outer peripheral surface to maintain a state in contact with the lower surface of the disk 120 .

In addition, the second coupling member 220 includes a plurality of handle portions 223 formed to protrude outwardly of the second coupling member 220 on the side surface of the second coupling member 220, The handle part 223 makes it possible to easily stop the rotation of the coupling 200 . At this time, the outer circumferential surface of the handle portion 223 is formed to be rounded to minimize the occurrence of a safety accident when the operator handles the second coupling member 220 . For example, when used in combination with a product (eg, an air grinder) that does not have a function to stop rotation in a driving unit (not shown) such as a motor that rotates the rotating body 100 and the coupling 200, the It may not be easy to replace the object 100 to be rotated. That is, when the rotating body 100 is worn, the rotation of the coupling 200 can be easily stopped by pressing the handle 223 . In other words, in a state in which the coupling 200 is rotating, interference of the plurality of handle parts 223 is generated to stop the rotation of the second coupling member 220 , so that of the coupling 200 . The rotation can be easily stopped.

In addition, the second coupling member 220 includes a plurality of first screw portions 226 provided to be coupled to a fourth coupling member 240 to be described later. The plurality of first screw parts 226 are radially arranged with respect to the center of the second coupling member 220 so that the second coupling member 220 and the fourth coupling member 240 are coupled in a balanced overall manner. make it possible

Next, the coupling 200 includes a third coupling member 230 and a fourth coupling member that allow the first coupling member 210 and the second coupling member 220 to be more firmly and compactly coupled. (240) and a fifth coupling member (250).

Referring to FIG. 5 , the third coupling member 230 is formed in a hollow disk shape to correspond to the lower surface of the second coupling member 220 . In addition, the third coupling member 230 includes a plurality of second screw portions 231 provided to be coupled to the fifth coupling member 250 . The plurality of second screw parts 231 are radially arranged with respect to the center of the third coupling member 230 so that the third coupling member 230 and the fifth coupling member 250 are coupled in a balanced overall manner. make it possible In addition, the second screw portion 231 is formed to protrude upward of the third coupling member 230 . Accordingly, the second screw part 231 forms a step on the upper surface of the third coupling member 230 so that the second coupling member 220 can be easily placed on the third coupling member 230 . It can play a role in guiding you. In addition, the third coupling member 230 includes a plurality of concave portions 232 formed to be concave in a direction toward the center of the third coupling member 230 on the outer peripheral surface. The plurality of concave portions 232 may serve to guide the fifth coupling member 250 to be placed under the third coupling member 230 . In addition, each of the plurality of concave portions 232 is formed adjacent to the second screw portion 231 to facilitate fastening of the screw.

Next, referring to FIG. 6 , the fourth coupling member 240 is formed in a hollow disk shape to correspond to the lower surface of the third coupling member 230 . In addition, the fourth coupling member 240 includes a plurality of third screw parts 241 provided to be coupled to the second coupling member 220 through a screw. At this time, the plurality of third screw parts 241 are provided to be arranged in a straight line with the plurality of first screw parts 226, respectively, so that the screw fastens the first screw part 226 and the third screw part 241, The second coupling member 220 and the fourth coupling member 240 are coupled to each other. In addition, the third screw portion 241 is formed to protrude upward from the upper surface of the fourth coupling member 240 . Accordingly, the plurality of third screw portions 241 may each serve to guide the plurality of concave portions 232 to be placed under each of the plurality of third screw portions 241 .

Next, referring to FIG. 7 , the fifth coupling member 250 is provided in the form of a hollow disk in such a way that it is inserted into the hollow of the fourth coupling member 240 . In addition, the fifth coupling member 250 includes a plurality of fourth screw portions 251 provided to be coupled to the third coupling member 230 through screws. At this time, the plurality of fourth screw parts 251 are provided to be arranged in a straight line with the plurality of second screw parts 231, respectively, so that the screws fasten the fourth screw part 251 and the second screw part 231, The third coupling member 230 and the fifth coupling member 250 are coupled to each other.

In addition, the fifth coupling member 250 includes a spring part 252 that allows the second coupling member 220 to be lifted and a pillar part 253 that supports the spring part 252 in a direction perpendicular to the ground. ) is included. The pillar part 253 is formed to protrude upward from the upper surface of the fifth coupling member 250 , and the spring part 252 is inserted to surround the outer circumferential surface of the pillar part 253 , and the spring part (252) plays a supporting role. In addition, one end of the spring part 252 is supported on the upper surface of the fifth coupling member 250 , and the other end is supported on the lower surface of the protruding point 224 . That is, when the assembly of the coupling 200 is completed, the spring part 252 is provided between the second coupling member 220 and the fifth coupling member 250 to secure the second coupling member 220 . It is in a state where an upward pushing force is applied. Accordingly, the spring part 252 serves to make the coupling between the rotating body 100 and the coupling 200 more robust. That is, when the rotating body 100 and the coupling 200 are coupled, the spring 252 pushes the second coupling member 220 upwardly between the first protrusion 211 and the support 215 . Prevents the protrusion 112 fixed to the detachment. In other words, the spring part 252 serves to prevent the rotating body 100 from being separated from the first coupling member 210 . In addition, in the case of separating the rotating body 100 from the coupling 200, when the rotating body 100 is pressed downward with a force greater than or equal to the elastic force of the spring part 252, the second coupling member ( As the 220 moves downward, the rotating body 100 moves downward. Accordingly, the protrusion 112 is in a state in which the space between the first protrusion 211 and the support 215 is separated, and by rotating the object 100 in one direction in that state, the object ( 100) may be separated from the coupling 200. For example, when the rotating body 100 is pressed downward, the rotating body 100 is lowered by a length exceeding 2 mm. In addition, the spring part 252 may be radially arranged with respect to the center of the plurality of fifth coupling members 250 .

As a result, referring to FIG. 8 , when the object to be rotated 100 is coupled to the coupling 200 , the coupling 200 is inserted into the coupling hole 110 and then rotated counterclockwise. , the first protrusion 211 may be engaged with the protrusion 112 . At this time, the spring part 252 pushes the second coupling member 220 upward to maintain a gap between the second coupling member 220 and the rotating body 100, so that the rotating body 100 moves downward. support so that it cannot be moved. That is, through the gap between the second coupling member 220 and the rotating body 100, it is possible to visually confirm whether the rotating body 100 and the coupling 200 are perfectly coupled. Also, referring to FIG. 9 , when the rotating body 100 is separated, the rotating body 100 is pressed downward as shown in FIG. ) in a rotated state, when the rotating body 100 is lifted upward as shown in FIG. 9C , the rotating body 100 and the coupling 200 can be easily separated.

As such, those skilled in the art to which the present invention pertains will understand that the above-described technical configuration of the present invention may be implemented in other specific forms without changing the technical spirit or essential characteristics of the present invention.

Therefore, the embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the following claims rather than the above detailed description, and the meaning and scope of the claims and their All changes or modifications derived from the concept of equivalents should be construed as being included in the scope of the present invention.

100: object to be rotated
110: coupling hole
111: space part
112: protrusion
120: original plate
130: day
200: coupling
210: first coupling member
211: first projection
212: second projection
213: protrusion
214: depression
215: support
216: hollow shaft
220: second coupling member
221: main hall
222: border
223: handle part
224: protrusion point
225: sinking point
226: first screw part
230: third coupling member
231: second screw part
232: concave
240: fourth coupling member
241: third screw part
250: fifth coupling member
251: fourth screw part
252: spring part
253: pillar part

Claims (5)

rotating body; and
Including; a coupling coupled to the rotating body;
By pressing and rotating the rotating body, it is possible to separate the rotating body and the coupling,
The object to be rotated is
Including; a coupling hole formed in the central portion of the rotating body;
The coupling is
and a first coupling member whose upper surface is formed in a shape corresponding to the coupling hole;
The first coupling member,
Containing;
By rotating the first coupling member after being inserted into the coupling hole, the coupling and the rotating body are coupled,
The first coupling member,
A plurality of second protrusions formed on the lower surface of the first coupling member in an outward direction of the first coupling member;
The coupling is
A second coupling member having a main hole having a shape corresponding to the coupling hole on the upper surface thereof is further included;
The second protrusion, when the first coupling member is inserted into the main hole, the rotational force transmission device with improved assembly, characterized in that to prevent the second coupling member from being separated below the first coupling member. According to claim 1,
The second coupling member,
and a rim portion formed along the edge of the upper surface of the second coupling member;
The rim portion,
By protruding upwardly of the second coupling member, it is in contact with the lower surface of the rotating body to minimize vibration of the rotating body when the rotating body rotates. According to claim 1,
The second coupling member,
Includes; a plurality of handle portions formed to protrude outwardly of the second coupling member on the side surface of the second coupling member;
The handle portion,
A rotational force transmission device with improved assembly, characterized in that it allows the rotation of the coupling to be easily stopped.
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