Grinder dust collection apparatus

Abstract

The present invention relates to a grinder dust collector for efficiently collecting dust and cutting debris generated during a grinder cutting operation. The grinder dust collector for collecting dust generated by a cutter of a grinder comprises: a main body of a certain shape having a fixed shaft formed at the front; a first dust collection cover mounted on the fixed shaft and capable of rotating at a certain angle from the left side of the main body; a second dust collection cover mounted on the fixed shaft and capable of rotating at a certain angle from the right side of the main body; and a plurality of ball-shaped wheels provided at the bottom of the main body to enable forward, backward, left, and right movement of the device.

Description

Technology Field

[0001] The present invention relates to a grinder dust collector for efficiently collecting dust and cutting debris generated during grinder cutting operations. Background Technology

[0002] Conventional grinders perform cutting operations using cutters, during which a large amount of dust and cutting fragments are scattered. Although various dust collection covers have been proposed to prevent this, existing devices have the following problems.

[0003] Most existing covers are fixed or allow only limited rotation, making it difficult to adequately control the various directions of dust dispersion generated during the cutting process. Furthermore, they have limitations in that they fail to properly adapt to changes in the thickness or diameter of the cutter or the shape of the workpiece. Additionally, problems arise where separate operations are required to move the cover, or where the presence of only a fixed force makes it difficult to secure space for the cutter to cut deeper.

[0004] In particular, when the cutter penetrates deeply into the object during cutting, the dust collection cover interferes with the cutter, limiting the cutting depth, and there is also a problem with reduced dust control capabilities for the inflow and outflow in the front and rear.

[0005] Therefore, a device with a cover movement structure capable of actively responding to cutting conditions and higher dust collection efficiency is required. Prior art literature

[0006] Published Patent Application No. 10-2010-0084590 (Published July 27, 2010) Registered Patent Application No. 10-1571415 (Registered November 18, 2015) Registered Patent Application No. 10-2291809 (Registered August 26, 2021) Registered Patent Application No. 10-2822261 (Registered June 13, 2025) The problem to be solved

[0007] The present invention has been devised to solve the above-mentioned problems and aims to provide a grinder dust collector that improves the collection rate of cutting fragments and dust generated by the operation of a cutter and ensures the mobility of the device. means of solving the problem

[0008] To achieve the above objective, the present invention provides a grinder dust collector for collecting dust generated by a cutter of a grinder, comprising: a main body of a certain shape having a fixed shaft formed at the front; a first dust collection cover mounted on the fixed shaft and capable of rotating at a certain angle from the left side of the main body; a second dust collection cover mounted on the fixed shaft and capable of rotating at a certain angle from the right side of the main body; and a plurality of ball-shaped wheels provided at the bottom of the main body to enable forward, backward, left, and right movement of the device.

[0009] In the present invention, the main body is characterized by comprising: a fixed shaft having a mounting hole formed in the center and a cutter mounted through the mounting hole; a connecting bar extending rearward from the fixed shaft; a front body connected to the connecting bar and formed in an arc shape of a certain length relative to the fixed shaft at the rear of the fixed shaft; a rear body extending rearward from the center of the front body; and a top plate mounted on the upper portion of the fixed shaft, the front body, and the rear body, and having an upper mounting hole corresponding to the mounting hole of the fixed shaft.

[0010] In the present invention, the first dust collection cover is characterized by comprising: a first rotary connecting ring rotatably mounted on a fixed shaft; a first cover body in the shape of a fan formed at the rear of the first rotary connecting ring; a first roller mounted on the upper left side of the first cover body and rolling in contact with an object; and a first pad mounted in an arc shape on the lower left side of the first cover body.

[0011] In the present invention, the second dust collection cover is characterized by comprising: a second rotary connecting ring rotatably mounted on a fixed shaft; a fan-shaped second cover body formed at the rear of the second rotary connecting ring; a second roller mounted on the upper right side of the second cover body and rolling in contact with an object; a moving tip mounted at the right end of the second cover body that moves back and forth upon contact with an object and prevents lateral scattering of dust and cutting fragments generated by the operation of a cutter; an outlet formed at the rear side of the second roller and communicating with a dust collection tank to discharge dust and cutting fragments to the outside; and a second pad mounted in an arc shape on the lower right end of the second cover body.

[0012] In the present invention, the ball wheel is characterized by being capable of rotating 360 degrees, thereby enabling fine direction changes.

[0013] In the present invention, the ball-shaped wheel is characterized by comprising: a wheel body into which a ball is inserted and seated and a through hole formed downwardly; a ball inserted into the inner side of the wheel body, with a portion protruding through the through hole and moving forward, backward, left, and right; and a connecting shaft connected to the upper end of the wheel body to fix the position of the ball and extending upward to be mounted on the main body.

[0014] The present invention is characterized by further including: a spring shaft formed on the connecting bar at the rear of the fixed shaft; and a torsion spring mounted on the spring shaft and in contact with the rear side of the first cover body and the second cover body to provide elastic force to the first cover body and the second cover body. Effects of the invention

[0015] The grinder dust collector according to the present invention has the following effects.

[0016] First, it has the advantage that the left and right covers and moving tip block the scattering path, and the dust collection rate is significantly improved by combining vacuum suction.

[0017] Second, the moving tip on the right cover controls the scattering path of the cut fragments, enhancing worker safety and minimizing contamination of surrounding equipment.

[0018] Third, the adoption of ball wheels makes it easy to fine-tune the device or move it in the desired direction, offering the advantage of high on-site work efficiency.

[0019] Fourth, it has the advantage of reducing the external spread of dust, which contributes to maintaining workplace cleanliness and protecting the health of workers. Brief explanation of the drawing

[0020] FIG. 1 is a perspective view of a grinder dust collector according to the present invention. FIG. 2 is a bottom perspective view of a grinder dust collector according to the present invention. FIG. 3 is a perspective view with the cutter fixing part removed from FIG. 1. FIG. 4 is a bottom perspective view of FIG. 3. FIG. 5 is a perspective view of FIG. 1 with the cutter mounted. FIG. 6 is a bottom perspective view of FIG. 5. Fig. 7 is an exploded perspective view of Fig. 5. Specific details for implementing the invention

[0021] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the embodiments described below are merely intended to provide a detailed description sufficient for a person skilled in the art to easily practice the invention, and do not imply that the scope of protection of the present invention is limited thereby. Furthermore, in describing various embodiments of the present invention, the same reference numerals will be used for components having the same technical features.

[0022] With reference to FIGS. 1 to 4, a grinder dust collector (1) according to the present invention will be described in detail. The grinder dust collector (1) according to the present invention comprises a main body (10) of a certain shape having a fixed shaft (11) formed at the front, a first dust collection cover (20) mounted on the fixed shaft (11) and capable of rotating at a certain angle on the left side of the main body (10), a second dust collection cover (30) mounted on the fixed shaft (11) and capable of rotating at a certain angle on the right side of the main body (10), and a plurality of ball-shaped wheels (40) provided at the bottom of the main body (10) to enable the device to move forward, backward, left, and right. Additionally, a cutter mounting part (50) for mounting a cutter (60) may be further added. Each component will be described in detail below.

[0023] First, the main body (10) comprises a fixed shaft (11) having a mounting hole (111) formed in the center and a cutter (60) mounted in the mounting hole (111), a connecting bar (12) extending rearward from the fixed shaft (11), a front body (13) connected to the connecting bar (12) and formed in an arc shape of a certain length relative to the fixed shaft (11) at the rear of the fixed shaft (11), a rear body (14) extending rearward from the center of the front body (13), and a top plate (15) mounted on the upper part of the fixed shaft (11), the front body (13), and the rear body (14), and provided with an upper mounting hole (1511) corresponding to the mounting hole (111) of the fixed shaft (11). The fixed shaft (11) serves as a shaft on which the first dust collection cover (20) and the second dust collection cover (30) are mounted so that they can rotate. A first dust collection cover (20) and a second dust collection cover (30) are rotatably mounted on a fixed shaft (11) so that the cutting work can be performed smoothly by moving back and forth during cutting work on floors, etc. The fixed shaft (11) is connected to a front body (13) through a connecting bar (12). By means of the connecting bar (12) connected to the bottom of the fixed shaft (11), the fixed shaft (11) is positioned higher than the bottom of the front body (13), making it possible to mount a cutter (60). The connecting bar (12) connects the fixed shaft (11) and the front body (13). A spring shaft (16) for mounting a torsion spring (17) is formed on the inner front side of the connecting bar (12), and a torsion spring (17) is mounted on the spring shaft (16) to push the first dust collection cover (20) and the second dust collection cover (30) from the rear, and to allow them to move in the forward and backward directions when the grinder is driven, and to provide elastic force so that the first dust collection cover (20) and the second dust collection cover (30) can always return to their original positions. The front body (13) is formed in an arc shape of a certain length.The front body (13) comprises a front body body (131) formed in an arc shape, a front arm (132) extending from both sides of the front body body (131) and equipped with a ball wheel (40), a front pad (134) mounted on the bottom surface of the front body body (131) to prevent dust or cut pieces from scattering, a first guide groove (133a) formed in the shape of a groove on the front left side of the front body body (131) to guide the rotation of the first dust collection cover (20), and a second guide groove (133b) formed in the shape of a groove on the front right side of the front body body (131) to guide the rotation of the second dust collection cover (30). The first guide groove (133a) and the second guide groove (133b) are formed in an arc shape to enable rotation of the first dust collection cover (20) and the second dust collection cover (30). A rear body (14) is connected to the rear of the front body (13). The rear body (14) consists of a rear body body (141) and a rear arm (142) that extends to the left and right from the rear body body (141). A top plate (15) is mounted on the upper portions of the fixed shaft (11), the connecting bar (12), the front body (13), and the rear body (14) to fix the positions of each component. The top plate (15) is composed of an upper fixed shaft (151) in which an upper mounting hole (1511) is formed, a fan-shaped front top plate body (152) connected to the upper fixed shaft (151), a rear top plate body (153) covering the rear body (14) from the front top plate body (152), a front top plate arm (154) covering the front arm (132) from the front top plate body (152), and a rear top plate arm (155) covering the rear arm (142).

[0024] The first dust collection cover (20) comprises a first rotary connecting ring (21) rotatably mounted on a fixed shaft (11), a fan-shaped first cover body (22) formed at the rear of the first rotary connecting ring (21), a first roller (23) mounted on the upper left side of the first cover body (22) to roll in contact with an object, and a first pad (24) mounted in an arc shape on the lower left side of the first cover body (22). The left side of a torsion spring (17) is supported on the rear side of the first dust collection cover (20) to provide elastic force. The first dust collection cover (20) can move back and forth by the torsion spring (17) and returns to its original position by elastic restoring force. The first cover body (22), which is formed in a fan shape, can rotate along the first guide groove (133a) of the front body (13), so that it can move back and forth while rotating when in contact with an object. Therefore, the object is cut while maintaining contact with it, thereby preventing the resulting cut pieces and dust from scattering to the outside. Additionally, when the first roller (23) comes into contact with the object, it performs a rolling action, enabling smooth movement of the first dust collection cover (20). Furthermore, the first pad (24) formed on the bottom surface also prevents the cut pieces and dust from scattering to the outside, thereby enhancing the dust collection performance.

[0025] The second dust collection cover (30) comprises a second rotary connecting ring (31) rotatably mounted on a fixed shaft (11), a fan-shaped second cover body (32) formed at the rear of the second rotary connecting ring (31), a second roller (33) mounted on the upper right side of the second cover body (32) and rolling in contact with an object, a moving tip (34) mounted on the right end of the second cover body (32) that moves back and forth when in contact with an object and prevents lateral scattering of dust and cutting pieces generated by the operation of the cutter (60), an outlet (35) formed on the rear side of the second roller (33) and communicating with a dust collection tank (not shown) to discharge dust and cutting pieces to the outside, and a second pad (36) mounted in an arc shape on the lower right end of the second cover body (32). Additionally, a tip guide groove (47) for guiding the forward and backward movement of the moving tip (34) is further formed on the bottom surface of the second cover body (32). The second rotational connecting ring (31) is inserted into the fixed shaft (11) to allow rotation around the fixed shaft (11). The second cover body (32) connected to the second rotational connecting ring (31) is formed in a fan shape. The second cover body (32), formed in a fan shape, rotates along the second guide groove (133b), and forward and backward movement is made possible by the rotation of the second cover body (32). Furthermore, the elastic force of the torsion spring (17) is provided on the rear side of the second cover body (32), and due to the elastic force of the torsion spring (17), the second cover body (32) can always return to its original position by having forward and backward movement and elastic restoring force. The second roller (33) provides smooth movement when the second cover body (32) comes into contact with an object, thereby facilitating the smooth movement of the grinder dust collector (1) from side to side. The moving tip (34) moves back and forth along the tip guide groove (37). Accordingly, a spring (not shown) may be installed at the rear of the moving tip (34). The spring provides a restoring force, and when in contact with an object, it moves back and forth according to the shape of the object, preventing the scattering of cutting pieces and dust laterally. The moving tip (34) is made of a hard polymer and moves back and forth.Additionally, it may be made of a soft material such as rubber so that it can move back and forth and also move left and right. Accordingly, efficient dust collection can be achieved while preventing lateral scattering while in contact with the object. An outlet (35) is provided on the rear side of the second roller (33) of the second cover body (32) to discharge dust and cutting fragments into a dust collection tank (not shown). A bellows-shaped hose may be connected to the outlet (35), and the cutting fragments and dust are transported to the dust collection tank by the operation of a vacuum pump. A second pad (36) is mounted in an arc shape on the bottom surface of the second cover body (32) to prevent scattering of cutting fragments and dust.

[0026] The ball-shaped wheel (40) is mounted on the front arm (132), the front upper arm (154), the rear arm (142), and the rear upper arm (155). The ball-shaped wheel (40) consists of a wheel body (41) into which a ball (42) is inserted and seated and in which a through hole is formed downward, a ball (42) inserted into the inner side of the wheel body (41) and which moves forward, backward, left, and right with a part protruding through the through hole, and a connecting shaft (43) connected to the upper end of the wheel body (41) to fix the position of the ball (42) and extending upward to be mounted on the main body (10). Since the wheel is made of a ball (42), it has the advantage of being able to rotate 360 ​​degrees and make fine changes in direction. When the ball (42) is inserted into the wheel body (41), the ball (42) is fixed in position on the wheel body (41) by the shaft connecting part (43). The shaft connecting part (43) is fixedly mounted to the main body (10) with a nut (44). Additionally, the height of the grinder dust collector (1) can be adjusted using the shaft connecting part (43). That is, the height of the device (1) can be adjusted by inserting a flat washer, etc., into the bottom surface of the arm (132, 142) on which the shaft connecting part (43) is mounted.

[0027] The cutter mounting part (50) is mounted on the front upper body (152). The cutter mounting part (50) consists of a cutter mounting ring (51) and a fixed connecting plate (52). The cutter (60) is connected to the motor shaft (not shown) of the grinder, and the grinder (not shown) is mounted on the cutter mounting ring (51) so that the cutter (60) can be rotated by the motor shaft.

[0028] FIGS. 5 to 7 illustrate a state in which a cutter (60) is mounted. A cutter (60) is attached to a grinder dust collector (1). Generally, the cutter (60) is connected to the motor shaft of the grinder, and the grinder is connected to the cutter mounting part (50), so that the object can be cut by the cutter (60). When the object is cut by the cutter (60), cutting fragments and dust are inevitably generated. The generated dust and cutting fragments are not scattered outward by the moving tip (34) but can be transported to a dust collection tank through the discharge port (35), thereby facilitating the work and ensuring the safety and health of the worker.

[0029] As described above, the grinder dust collector (1) according to the present invention has the advantage of being able to efficiently collect and discharge cutting fragments and dust generated when cutting concrete, etc. with a cutter (60), thereby reducing the inconvenience caused by dust generation and ensuring the safety of the worker.

[0030] Although the embodiments described above are illustrative, it is obvious to those skilled in the art that the present invention may be embodied in various other forms without departing from the spirit and scope thereof. Accordingly, the embodiments described above should be regarded as illustrative rather than restrictive, and all embodiments within the scope of the appended claims and their equivalents shall be deemed to be included within the scope of the present invention. Explanation of the symbols

[0031] 1 : Grinder dust collector 10 : Main body 11 : Fixed shaft 12 : Connecting bar 13 : Front body 14 : Rear body 15 : Top plate 16 : Spring axis 17 : Torsion spring 20: First dust collection cover 21: First rotary connecting ring 22 : First cover body 23 : First roller 24 : 1st pad 30: Second dust collection cover 31: Second rotary connecting ring 32 : Second cover body 33 : Second roller 34 : Movement Tip 35 : Discharge 36 : Pad 2 37 : Tip Guide Home 40: Ball wheel 41: Wheel body 42 : Ball 43 : Shaft connection 44 : Nut 50 : Cutter mounting part 51 : Cutter mounting ring 52 : Fixed connection plate 60 : Cutter

Claims

Claim 1 A grinder dust collector for collecting dust generated by a cutter of a grinder comprises: a main body of a certain shape having a fixed shaft formed at the front; a first dust collection cover mounted on the fixed shaft and capable of rotating at a certain angle from the left side of the main body; a second dust collection cover mounted on the fixed shaft and capable of rotating at a certain angle from the right side of the main body; and a plurality of ball-shaped wheels provided at the bottom of the main body to enable forward, backward, left, and right movement of the device; wherein the main body comprises: a fixed shaft having a mounting hole formed in the center and a cutter mounted through the mounting hole; a connecting bar extending rearward from the fixed shaft; a front body connected to the connecting bar and formed in an arc shape of a certain length relative to the fixed shaft at the rear of the fixed shaft; and a rear body extending rearward from the center of the front body. A grinder dust collector characterized by comprising: a fixed shaft; a top plate mounted on the upper part of the front body and the rear body, and having an upper mounting hole corresponding to the mounting hole of the fixed shaft. Claim 2 delete Claim 3 A grinder dust collector according to claim 1, wherein the first dust collection cover comprises: a first rotary connecting ring rotatably mounted on the fixed shaft; a first cover body in the shape of a fan formed at the rear of the first rotary connecting ring; a first roller mounted on the upper left side of the first cover body and rolling in contact with an object; and a first pad mounted in an arc shape on the lower left side of the first cover body. Claim 4 In paragraph 3, the grinder dust collector is characterized by comprising: a second rotary connecting ring rotatably mounted on the fixed shaft; a fan-shaped second cover body formed at the rear of the second rotary connecting ring; a second roller mounted on the upper right side of the second cover body and rolling in contact with an object; a moving tip mounted on the right end of the second cover body that moves back and forth upon contact with an object and prevents lateral scattering of dust and cutting fragments generated by the operation of the cutter; an outlet formed at the rear side of the second roller and communicating with a dust collection tank to discharge dust and cutting fragments to the outside; and a second pad mounted in an arc shape on the lower right end of the second cover body. Claim 5 A grinder dust collector according to claim 4, characterized in that the ball wheel is capable of rotating 360 degrees and allowing for fine directional changes. Claim 6 A grinder dust collector according to claim 5, wherein the ball-shaped wheel comprises: a wheel body into which a ball is inserted and seated and a through hole formed downwardly; a ball inserted into the inner side of the wheel body, with a portion protruding through the through hole and moving forward, backward, left, and right; and a connecting shaft portion connected to the upper end of the wheel body to fix the position of the ball and extending upward to be mounted on the main body. Claim 7 A grinder dust collector according to claim 6, further comprising: a spring shaft formed on the connecting bar at the rear of the fixed shaft; and a torsion spring mounted on the spring shaft and in contact with the rear side of the first cover body and the second cover body to provide elastic force to the first cover body and the second cover body.

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