KR20140116576A - Portable grinder - Google Patents

Abstract

A portable grinder according to an embodiment of the present invention enables to improve the safety and efficiency of work by fixing a hand grinder at a rail member to cut material on a shelf by the hand grinder without moving in the lateral or vertical direction. Therefore, the disclosed portable grinder comprises: a base unit including a bed and the rail member coupled to be slid on the bed; a shelf unit to be detachably coupled to one side of the bed; an angle adjusting unit to be rotatably coupled in the horizontal direction on one side of the shelf; and a hand grinder unit coupled to the upper surface of the one side of the rail member.

Description

Portable Grinder {PORTABLE GRINDER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable grinder, and more particularly, to a portable grinder in which a hand grinder is fixed to a rail member which is moved in a sliding manner so that a hand grinder can cut a material on a shelf without moving left or right or up and down .

Generally, building materials such as stone or tile used for flooring of buildings, exterior finishing materials and other various purposes are supplied in advance with a predetermined thickness and size. Therefore, in a work site where such building materials are directly used, There is a case where a certain size is used for cutting.

Conventionally, a hand grinder type cutter is provided. In this structure, a diamond-type circular cutter connected to the handle is vertically rotated to cut a building material.

However, the conventional hand grinder type building material cutting machine cuts a building material while rotating a circular cutter rotating up and down very quickly at a speed of 12,000RPM or more. When a circular cutter cuts a metal material, flame and debris And thus the visibility of the operator is blurred, thereby causing frequent safety accidents. In addition, in the process of holding the handle connected to the circular cutter by hand and performing cutting operation, the cutter is severely moved to the left or right or up and down in case of a slight distraction, and a safety accident may occur to the operator at this time.

On the other hand, the conventional hand grinder type building material cutter has a problem that it is very inconvenient for a worker because a heavy workbench must be separately provided for each work site or must be moved even when a work site is moved.

Registered Patent Publication No. 10-1064586 "Lateral Loading Type Sliding Type ELM Transporting Cradle" Registered Patent Publication No. 10-0671470 "Hand Grinder Type Building Material Cutting Machine &

According to the present invention, a hand grinder is fixed to a rail member which is moved in a slide manner, thereby enabling the hand grinder to cut the material on the shelf without moving (rocking) in the left or right or up and down direction The present invention relates to a portable grinder.

A portable grinder according to an embodiment of the present invention includes a base portion having a bed and a rail member slidably coupled on the bed; A shelf detachably coupled to one side of the bed; An angle adjusting unit having one side rotatably coupled to one side of the shelf unit in a horizontal direction; And a hand grinder unit coupled to one side of an upper surface of the rail member; Wherein the angle adjusting portion comprises: a rotary plate having one side disposed on the shelf portion and the angle adjusting hole formed in a shape overlapping with the shelf portion; A support plate extending vertically on one side of the rotating plate; An arc-shaped separator coupled to the rotary plate so as to be spaced apart from the angle adjusting hole; A guide member having one end connected to the shelf part through one end of the rotary plate and the other end disposed adjacent to the separator via the angle adjusting hole; A fixing handle which penetrates through the guide member and the angle adjusting hole and is coupled to the shelf unit and adjusts the rotation and fixing of the rotary plate by pulling and tightening; And a sub-support plate coupled to the other end of the rotation plate; Wherein the hand grinder comprises: a horizontal plate coupled to the rail member; a vertical plate formed at one end of the horizontal plate; and a guide block coupled to one side of the vertical plate; A moving plate movable up and down on the guide block; And a hand grinder detachably coupled to the moving plate; . ≪ / RTI >

The sub-support plate is formed in a shape of a letter "A ". A first movement control hole is formed at a regular interval in the vertical part of the letter" a ", and a height control unit is further coupled to the sub- The vertical portion of the "C" is superimposed on the vertical portion of the sub support plate, and the second movement adjustment hole in the shape of a long hole corresponding to the first movement adjustment hole is formed in the vertical direction The first height adjustment part is capable of adjusting the height of the height adjustment part with respect to the sub support plate by inserting the fixing screw in a state in which the first movement adjustment hole and the second movement adjustment hole are overlapped with each other, A fixing hole is formed in a horizontal portion of the fixing plate, and a fixing member is screwed to the fixing hole to fix the fixing plate to the sub- This control unit secondary height adjustment is possible.

A plurality of bed holes are vertically and horizontally spaced on both sides of the bed, and a plurality of shelf holes are formed on both sides of the shelf so as to correspond to the bed holes. The shelf holes and the bed holes The height of the shelf can be adjusted with respect to the bed by selectively fixing the shelf by means of the fastening means after the superposition.

Wherein the fixed handle comprises: a lower handle having a lower portion coupled to the shelf portion, an upper portion protruding through the angle adjusting hole and the guide member, and having an outer peripheral surface threaded; And an upper handle screwed to the lower handle to press or release the upper surface of the rotary plate according to the rotation direction to adjust whether the rotary plate is fixed or not.

The hand grinder is fixed to the base portion of the portable grinder of the present invention, so that a safety accident, which is caused when the hand grinder is moved away from the hand of a worker, can be prevented.

In addition, since the hand grinder can move horizontally and vertically, it has an advantage that cutting work can be easily performed on various types of materials.

In addition, since the angle adjusting device for adjusting the cutting angle of the material and the height adjusting device for adjusting the height of the shelf are provided, it is possible to arbitrarily adjust the cutting angle of the material and to adjust the level of the work It has an advantage of being easy to do.

1 is a perspective view showing a portable grinder according to an embodiment of the present invention.
Figure 2a is a front view of the bed of Figure 1;
FIG. 2B is a front view showing a state in which a ball bearing and a first sealing cover member are mounted on the bed of FIG. 1; FIG.
Figure 2c is a front view showing a rail member coupled to the bed of Figure 1;
Fig. 2D is a front view showing a state in which the second sealing cover member is mounted on the rail member of Fig. 1; Fig.
Fig. 3 is a perspective view of the hand grinder of Fig. 1 when viewed from the rear side. Fig.
4A and 4B are plan views showing the case where the angle adjusting portion of FIG. 1 is 90 degrees and the case where the angle adjusting portion is 45 degrees.
5A and 5B are perspective views illustrating first and second height adjusting operations by the height adjusting unit of FIG.
Figs. 6A and 6B are side views showing a state in which the hand grinder of Fig. 1 is reversed and advanced. Fig.
7A and 7B are perspective views showing a state in which a portable grinder according to an embodiment of the present invention cuts a material at 90 degrees and 45 degrees.
8A and 8B are side views showing the height adjusting operation by the combination of the shelf part and the bed in Fig.
9 is a partially exploded perspective view showing the angle adjusting portion of FIG.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in which those skilled in the art can readily implement the present invention.

Fig. 1 is a perspective view showing a portable grinder according to an embodiment of the present invention, Fig. 2a is a front view showing the bed of Fig. 1, Fig. 2b is a view showing a state where a ball bearing and a first sealing cover member Fig. 2C is a front view showing a rail member coupled to a bed of Fig. 1, Fig. 2D is a front view showing a state where a second sealing cover member is mounted on the rail member of Fig. 1, FIGS. 4A and 4B are plan views showing a case where the angle adjusting unit of FIG. 1 is 90 degrees and a case where the angle adjusting unit is 45 degrees, FIGS. 5A and 5B are views showing a state in which the angle adjusting unit of FIG. FIGS. 6A and 6B are side views showing a state in which the hand grinder of FIG. 1 is reversed and advanced, and FIGS. 7A and 7B are perspective views showing a first and a second height adjusting operation according to an embodiment of the present invention 8A and 8B are side views showing the height adjusting operation by the combination of the shelf part and the bed of Fig. 1, Fig. 9 is a side view showing the angle of the angle &thetas; Fig.

1, a portable grinder according to an embodiment of the present invention includes a base portion 10 including a bed 11 and a rail member 12, a shelf portion 20, a hand grinder 30, (40) and a height adjusting portion (50).

The present portable grinder is configured such that the rail member 12 and the hand grinder 30 are coupled through the fixing member 31 and are integrally guided and moved and are guided by the circular cutter 33c of the hand grinder 30, Is a device for cutting a material (1) to be placed on a workpiece.

The base portion 10 includes a bed 11 and a rail member 12.

The shelf unit 20 is detachably coupled to both sides of the bed 11. The bed 11 includes a plurality of bed holes formed on both sides of the bed 11 so as to be spaced vertically and horizontally and a plurality of shelf holes 21 formed on both sides of the shelf 20 in correspondence with the bed holes And 22 are fixed to the shelf portion 20 by selectively engaging the fastening means 23.

The bed 11 is also provided with at least one ball bearing 113, 114 and 115 on its inner wall so that the rail member 12 can be moved forward or backward by the rotation of the ball bearings 113, Guide. More specifically, as shown in FIGS. 2A and 2B, the bed 11 has first and second sidewall portions 110 and 111 to which ball bearings 113 and 114 are bolted to both inner side walls, And a lower wall portion 112 protruding on the inner sidewall and to which the ball bearing 115 is bolted. As described above, the bed 11 is formed by forming the ball bearings 113, 114, and 115 in a stable triangular shape to form a rail area, and by inserting the rail member 12 into the rail area, The hand grinder 30 fixed to the handle 12 reciprocates. Here, the ball bearings 113, 114, and 115 minimize friction between metals, and when the rail member 12 and the hand grinder 30 move integrally, the ball bearings 113, 114, and 115 can safely perform operations without shaking or deviating have. A first sealing cover member 11a is bolted to both end portions of the lower wall portion 112. [ Therefore, the first sealing cover member 11a can prevent the inside of the bed 11 from being contaminated. A bottom support member 13 is attached to one side of the bed 11. This lower surface supporting member 13 can prevent the bed 11 from moving vertically or horizontally by widening the surface area of the bed 11 which is in contact with the ground. A cushioning member (not shown) such as rubber may be attached to the lower portion of the bed 11 and the lower surface supporting member 13. This shock absorbing member can prevent the impact of the bed 11 during operation, fine fluctuation, slip prevention, and the like.

The rail member 12 has slide grooves 120, 120 corresponding to the shapes of the ball bearings 113, 114, 115 at positions corresponding to the ball bearings 113, 114, 115 as shown in Figs. 2C and 2D. 121 and 122 are formed and coupled to the bed 11 so as to be guided by the rotation of the ball bearings 113, 114 and 115. At this time, the slide grooves 120 and 121 have first and second slide grooves 120 and 121 corresponding to the shapes of the ball bearings 113 and 114 coupled to the first and second side wall portions 110 and 111, And a third slide groove 122 corresponding to the shape of the ball bearing 115 coupled to the lower wall portion 112. The rail member 12 can be made of a metal to fit the size and position of the ball bearings 113, 114, and 115 provided on the bed 11, and can be made lightweight using aluminum as a material thereof, The movement of the place becomes easy. Such a rail member 12 can prevent shaking through the ball bearings 113, 114, and 115 even when the rail member 12 is long.

The second sealing cover member 12a is bolted to the remaining area of the rail member 12 except for the first to third slide grooves 120, 121, and 122. Thus, the second sealing cover member 12a can prevent the inside of the rail member 12 from being contaminated. The first and second bending portions 120a and 121a are formed on the upper end of the outer side of the rail member 12 forming the first and second slide grooves 120 and 121 so as to be bent downward. The first and second bent portions 120a and 121a are formed by folding the left and right regions of the upper end of the outer side of the rail member 12 in the lower direction and by inserting the first and second bent portions 120a and 121a inside the rail member 12 , 121) can be prevented from being contaminated and the bed 11 can be prevented from departing from the bed 11.

The shelf portion 20 is composed of an upper surface and both side surfaces bent in a downward direction from both ends of the upper surface.

The material (1) is placed on the upper surface of the shelf part (20).

On both sides of the shelf portion 20, a plurality of shelf holes 21 and 22 are formed on both sides of the bed 11 so as to be spaced vertically and horizontally. The shelf unit 20 is disposed so as to selectively overlap with the bed holes formed so that the shelf holes 21 and 22 are spaced vertically and horizontally on both sides of the bed 11 and the shelf holes 21 and 22 and the bed And is fixed to both sides of the bed 11 by coupling the fastening means 23 to the holes. 8A and 8B, the shelf portion 20 is formed by selectively stacking the shelf holes 21 and 22 and the bed holes through the fastening means 23 to form the bed 11 The height in the vertical direction can be adjusted.

In the present invention, the small shelf unit 20 having the above-described structure is attached to the bed 11 to enable stable and safe work in a narrow space, and the material 1 is transferred to a factory, Which can save installation and transportation costs and time.

1 and 3, the hand grinder part 30 is joined to one side of the rail member 12 to cut the material 1 placed on the upper surface of the shelf part 20. As shown in Fig.

The hand grinder unit 30 includes a fixed plate 31, a moving plate 32, and a hand grinder 33.

The fixing plate 31 includes a horizontal portion 31a coupled to the rail member 12, a vertical portion 31b formed at one end of the horizontal portion 31a and a vertical portion 31b formed on one side of the vertical portion 31b And a guide block 31c. A supporting bar 31d for supporting the moving plate 32 is protruded from the horizontal portion 31a.

The moving plate 32 is movably coupled to the guide block 31c. A guide rail 32a is coupled to one side of the moving plate 32 so as to move on the guide block 31c.

3, a supporting plate (not shown) extending in the longitudinal direction of the hand grinder 33 is attached to the other side of the moving plate 32, 32c are formed. A cutter cover 32d for covering the upper portion of the circular cutter 33c of the hand grinder 33 is formed at the longitudinal end of the support plate 32c. A hand grinder 33 is detachably coupled to one side of the cutter cover 32d by a fastening means 32e.

The hand grinder 33 includes a handle frame 33a, a motor 33b and a circular cutter 33c and is detachably coupled to one side of a cutter cover 32d provided on the moving plate 32 . The hand grinder 33 corresponds to a generally known apparatus, and a description of the structure and operation of the hand grinder 33 will be omitted herein.

The hand grinder unit 30 constructed as described above is mounted on one side of the rail member 12 and is vertically movable up and down through the guide block 31c and moves forward and backward . In addition, since the hand grinder 30 can be detachably coupled to the moving plate 32 by using a hand grinder normally held by an operator, even when the working environment is changed, It is possible to eliminate the inconvenience of purchasing a new grinder, thereby reducing the cost of re-purchasing the tool.

Although not shown, a horizontal holder can be fixedly attached to the lower portion of the hand grinder 30 to prevent the debris of the material from falling down. The horizontal holder can prevent a small accident that the debris is splashed while moving together with the rail member 12. [

4A and 4B, the angle adjusting portion 40 is rotatably coupled to one side of the shelf portion 20 in a horizontal direction to adjust the cutting angle of the material 1. [

More specifically, the angle adjusting portion 40 includes a rotation plate 41, a support plate 45, a separator 44, a guide member 42, a fixing handle 43 and a sub support plate 46 do.

One side of the rotation plate 41 is disposed on the shelf portion 20 and an angle adjusting hole 410 is formed in an arc shape in a portion overlapping the shelf portion 20.

The support plate 45 extends vertically to one side of the rotation plate 41. The support plate (41) supports the side surface of the material (1) to be raised on the shelf (20).

The separator 44 has an arc shape and is engaged on the rotary plate 41 so as to be spaced apart from the angle adjusting hole 410.

One end of the guide member 42 is coupled to the shelf 40 through one end of the rotary plate 41 and the other end of the guide member 42 is disposed adjacent to the separator 44 via the angle adjusting hole 410 .

The fixing handle 43 is coupled to the shelf unit 20 through the guide member 42 and the angle adjusting hole 410 and can adjust the rotation and fixation of the rotary plate 41 by releasing and tightening.

The fixed handle 43 includes a lower handle 433 and an upper handle 431, as shown in Fig.

The lower handle 433 is formed so that a lower portion thereof is coupled to the shelf portion 20 and an upper portion thereof protrudes through the angle adjusting hole 410 and the guide member 42. A screw is formed on the outer circumferential surface of the lower handle 433. Reference numeral 434 denotes a washer.

The upper handle 431 is screwed to the lower handle 433. The upper handle 431 may control the fixing of the rotary plate 41 by pressing or releasing the upper surface of the rotary plate 41 according to the direction of rotation by the operator.

Therefore, when the angle of the material 1 placed on the upper surface of the shelf unit 20 is angled, the angular adjustment unit 40 reduces the work process of aligning the angles of the respective materials 1, The exact angle can be easily adjusted. That is, when the material 1 is cut in a straight line, the angle adjusting unit 40 rotates the angle by 90 degrees as shown in FIG. 4A. When the angle adjusting unit 40 slants the angle, the angle adjusting unit 40 rotates the rotation plate 41 It is possible to move it according to the separator 44 and to rotate the angle by 45 degrees.

The sub support plate 46 has an "A" shape and is coupled to the other end of the rotation plate 41. Here, a fixing hole 46c is formed in the horizontal portion 46a of the "a" shape so as to be coupled to the other end of the rotation plate 41 through the fastening means 41a. 7A and 7B, the horizontal part 46a of the "a" shape supports the long material 1 on the shelf part 20 to support the deflection of the material 1 during the work. A plurality of first movement adjusting holes 46d are formed at regular intervals in the vertical part 46b of the "a"

On the other hand, in the construction new construction site under construction, the floor (ie, installation surface) is uneven, so it is often difficult to level the work platform. The present invention further includes a height adjusting unit 50 coupled to the sub support plate 46 to solve this problem.

The height adjusting unit 50 includes a first height adjusting unit 51 coupled to the sub support plate 46 and a fixing member 55 coupled to the first height adjusting unit.

The first height adjusting portion 51 has a "C" shape and the vertical portion 52 of the "C" is superimposed on the vertical portion 46b of the sub support plate 46. Further, a second movement adjusting hole 52a having a slot shape corresponding to the first movement adjusting hole 46d is formed in the vertical part 52 of the "C " Therefore, the height adjusting unit 50 can be fixed to the sub support plate 46 by inserting the fixing screw 54 in a state where the first movement adjusting hole 46d and the second movement adjusting hole 52a are overlapped with each other, Primary height adjustment is possible.

Further, a fixing hole (not shown) is formed in the horizontal portion 53 of the "?"

The fixing member 55 is screwed into the fixing hole. The fixing member 55 has a head portion 55a fitted with a cushioning member which contacts the mounting surface, a column portion 55b extending from the head portion 55a and passing through the fixing hole, And a nut 55c for coupling the column portion 55b to the fixing hole. The buffer member may be made of a buffer material such as rubber or urethane, but is not limited thereto. 5A and 5B, the height regulating portion 50 is disposed in the vertical direction with respect to the sub support plate 46 in accordance with the rotation direction of the fixing member 55 (i.e., the column portion 55b) Secondary height adjustment is possible.

Therefore, in the present invention, when a height difference is generated between the floor on which the bed 11 is placed and the floor on the side of the height adjusting portion 50, the height is adjusted by the height adjusting portion 50, Side and the height regulating portion 50 side are in contact with the ground, so that the operation can be performed stably.

The portable grinder constructed as described above can safely cut the material 1 by placing the material 1 on the shelf portion 20 in a backward form as shown in FIG. 6A and gradually advancing it as shown in FIG. 6B .

Therefore, in the portable grinder according to the embodiment of the present invention, the hand grinder is fixed to the base portion, so that, when the work is cut, the hand grinder is moved arbitrarily to prevent a safety accident And the hand grinder can be horizontally moved and vertically moved, so that it is easy to perform cutting work on various types of materials. In addition, according to the present portable grinder, since the angle adjusting device capable of adjusting the cutting angle of the material and the height adjusting device capable of adjusting the height of the shelf are provided, the cutting angle of the material can be arbitrarily adjusted, It has an advantage that it is easy to work horizontally in the field or the like.

The present invention is not limited to the above-described embodiment, but may be modified and changed without departing from the gist of the present invention as set forth in the claims below. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

1: Material 10: Base portion
11: bed 12: rail member
20: shelves 21, 22: shelf holes
30: Hand grinder part 31: Fixing plate
32: moving plate 33: hand grinder
40: Angle adjusting portion 41: Rotating plate
42: guide member 43: fixed handle
44: Protractor 45: Support plate
50: height adjusting portion 51: first height adjusting portion
54: fixing screw 55: fixing member

Claims (4)

A base (10) having a bed (11) and a rail member (12) slidably coupled on the bed (11);
A shelf part (20) detachably coupled to one side of the bed (10);
An angle regulating part (40) rotatably coupled to one side of the shelf part (20) in a horizontal direction; And
A hand grinder part (50) coupled to one side of an upper surface of the rail member (12); , ≪ / RTI &
The angle adjusting unit 40 includes:
A rotation plate 41 having one side disposed on the shelf unit 20 and having an arc-shaped angle adjusting hole 410 at a portion overlapping the shelf unit 20;
A support plate 45 extending vertically on one side of the rotation plate 41;
An arc-shaped separator (44) coupled to the rotary plate (41) so as to be spaced apart from the angle adjusting hole (410);
And one end of the guide plate is connected to the shelf unit 20 through one end of the rotary plate 41 and the other end thereof is connected to the guide member 42);
A fixing handle 43 which penetrates through the guide member 42 and the angle adjusting hole 410 and is coupled to the shelf unit 20 and adjusts rotation and fixing of the rotary plate 41 by pulling and tightening; And
A sub-support plate (46) coupled to the other end of the rotation plate (41); Lt; / RTI >
The hand grinder unit 30 includes:
A vertical part 31b formed at one end of the horizontal part 31a and a guide part 31c formed on one side of the vertical part 31b, A fixing plate (31) having a plate (31);
A moving plate 32 movably coupled to the guide block 31c; And
A hand grinder 33 detachably coupled to the moving plate 32; Wherein the grinding wheel is attached to the grinding wheel.
The method according to claim 1,
The sub support plate 46 is formed in a shape of a letter "A", and a first movement adjusting hole 46d is formed at a regular interval in the vertical part 46b of the letter "A"
The sub-support plate 46 is further coupled with a height adjusting portion 50,
The vertical portion 52 of the "C" is superimposed on the vertical portion 46b of the sub support plate 46, and the height adjustment portion 50 is formed in a " A second movement adjusting hole 52a having a slot shape corresponding to the first movement adjusting hole 46d is formed so that the first movement adjusting hole 46d and the second movement adjusting hole 52a are overlapped with each other, The height of the height adjusting portion 50 can be adjusted with respect to the sub support plate 46 by inserting the fixing hole 54 into the horizontal portion 53. In the horizontal portion 53 of the " A fixing member 55 is screwed to the fixing hole so that the secondary height adjustment of the height adjusting portion 50 with respect to the sub support plate 46 is performed according to the rotation direction of the fixing member 55 Wherein said grinding machine comprises:
The method according to claim 1,
On both sides of the bed 11, a plurality of bed holes are formed vertically and horizontally,
On both side surfaces of the shelf part 20, a plurality of shelf holes 21 and 22 are vertically and laterally spaced from each other to correspond to the bed holes,
Characterized in that the height of the shelf part (20) is adjustable with respect to the bed (11) by fixing the shelf holes (21, 22) and the bed holes by the fastening means (23) Portable grinder.
The method according to claim 1,
The stationary handle (43) comprises:
A lower handle 433 having a lower portion coupled to the shelf portion 20 and an upper portion protruding through the angle adjusting hole 410 and the guide member 42 and having an outer peripheral surface formed with a screw; And
And an upper handle 431 screwed to the lower handle 433 and pressing or releasing the upper surface of the rotary plate 41 according to the rotation direction to adjust whether the rotary plate 41 is fixed or not Features a portable grinder.

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