CN221911282U - Brushless angle grinder - Google Patents

Abstract

The utility model discloses a brushless angle grinder which comprises a machine body, a machine head, a protective cover and a grinding wheel, wherein the machine body is connected with the machine head through a fastener, the protective cover is arranged in the middle of the lower part of the machine head, the grinding wheel is positioned in the protective cover, a dust collection assembly comprises a gas collecting pipe arranged above the grinding wheel and a dust collection barrel arranged below the machine body, a plurality of gas guide pipes are arranged outside the gas collecting pipe at equal intervals in a semicircular shape, the gas guide pipes are connected with the gas collecting pipe, the tail ends of the gas guide pipes are fixedly provided with gas expansion pipes, and the gas expansion pipes are in horn shapes. Through the dust collection assembly, dust raised in the grinding process can be absorbed and stored in a large range, and by the mode, on one hand, clear sight of staff can be ensured, and on the other hand, the risk that the raised dust threatens health during grinding is reduced; through the cooperation of shielding plate and limiting plate, the emery wheel under the staff's treating machine state of being convenient for protects and shelters from, reduces the emery wheel and takes place the possibility of colliding with.

Description

A brushless angle grinder

Technical Field

The utility model belongs to the technical field of angle grinders, and in particular relates to a brushless angle grinder.

Background Art

A brushless angle grinder is an electric tool that does not use carbon brushes. Traditional angle grinders require carbon brushes to transfer current, but this can cause problems such as loss, noise, and short motor life, so brushless angle grinders have emerged. Brushless angle grinders are widely used in many fields such as home decoration, woodworking, and auto repair: in home decoration, brushless angle grinders can be used for cutting and trimming materials such as metal, wood, and tiles; in woodworking, brushless angle grinders can be used for carving, grinding, and grinding; in auto repair, brushless angle grinders can be used for trimming and cutting auto parts, etc.

During use, the existing brushless angle grinders, especially when grinding stone materials such as tiles, easily stir up a lot of dust around due to the high rotation speed of the grinding wheel, which affects the workers' vision on the one hand and threatens their health on the other hand. Therefore, a brushless angle grinder is provided.

Utility Model Content

The utility model aims to provide a brushless angle grinder to solve the technical problems raised in the background technology.

To achieve the above-mentioned purpose, the specific technical scheme of the utility model is as follows: a brushless angle grinder, comprising a body, a head, a protective cover and a grinding wheel, the body and the head are connected by fasteners, the protective cover is arranged at the lower middle part of the head, the grinding wheel is located inside the protective cover, and also includes: a dust suction component for adsorbing dust raised during grinding, the dust suction component includes an air collecting pipe arranged above the grinding wheel, and a dust collecting cylinder arranged below the body, the outside of the air collecting pipe is semicircular and has a plurality of air guide pipes arranged at equal intervals, the air guide pipe is connected to the air collecting pipe, an air expansion pipe is fixedly installed at the end of the air guide pipe, the air expansion pipe is in a trumpet shape, a transfer pipe is arranged outside the dust collecting cylinder, a rubber tube is arranged outside the transfer pipe, the transfer pipe is connected to the dust collecting cylinder, one end of the rubber tube is connected to the transfer pipe, and the other end of the rubber tube is connected to the air collecting pipe, a turbine fan for gas drainage is installed inside the dust collecting cylinder, and an air filter element is arranged inside the dust collecting cylinder away from the turbine fan.

Preferably, the outer surface of the grinding wheel is gap-matched with the inner surface of the protective cover, a first auxiliary handle is detachably mounted on the outside of the machine body at one end away from the machine head, and a second auxiliary handle is detachably mounted on the outside of the machine head.

Preferably, a first transmission shaft is provided inside the fuselage, and bearing seats for supporting the first transmission shaft are provided at both ends of the outside of the first transmission shaft, the bearing seats are connected to the fuselage, the first transmission shaft and the bearing seats are rotatably connected through bearings, one end of the first transmission shaft is connected and assembled to the output end of the external driving member through a coupling, and a first bevel gear is provided in the middle of the other end of the first transmission shaft, and the first bevel gear is connected to the first transmission shaft.

Preferably, a second transmission shaft is rotatably installed inside the machine head through a bearing, a second bevel gear is provided on the outer wall of the second transmission shaft at the position of the first bevel gear, the second bevel gear is connected to the second transmission shaft, the second bevel gear is meshing with the first bevel gear, and the second transmission shaft is assembled with the grinding wheel through a pressing flange.

Preferably, a transfer shaft is provided on the upper end surface of the protective cover at the position of the fuselage, one end of the transfer shaft is connected to the protective cover, and the other end of the transfer shaft is connected to the fuselage, and a shielding plate for shielding the grinding wheel is provided on the outer wall of the protective cover, and the shielding plate is designed in an arc-shaped structure.

Preferably, the baffle plate and the protective cover are slidably arranged, and a limiting plate is arranged on the outside of the protective cover for guiding and limiting the baffle plate during the sliding process. The limiting plate is connected to the protective cover, and the limiting plate is designed as a U-shaped structure. There are multiple limiting plates, and the multiple limiting plates are evenly distributed in a semicircular shape.

Preferably, the air collecting pipe is designed with an arc-shaped structure, and a fixing seat for supporting and fixing the dust collecting pipe is provided in the middle of the outer wall of the dust collecting pipe, and the fixing seat is connected to the machine body. A shaping hose for supporting and adjusting the position of the air collecting pipe is provided in the middle of the upper end surface of the air collecting pipe, one end of the shaping hose is connected to the air collecting pipe, and the other end of the shaping hose is connected to the machine head.

Preferably, the inner cavity of the dust collecting tube, the inner cavity of the adapter tube, the inner cavity of the rubber tube, and the inner cavity of the air collecting tube are interconnected, a sealing ring for sealing the joint is provided on the outside of the air filter element, the outer wall of the sealing ring is in contact with the inner wall of the dust collecting tube, a tail cover is detachably mounted on the outside of the dust collecting tube, and an exhaust port is opened through the middle of the tail cover.

The brushless angle grinder of the utility model has the following advantages:

1. The utility model is provided with a dust collection component. When in use, the dust raised during the grinding process can be absorbed and stored in a large range through the cooperation of the air collecting pipe, the fixing seat, the dust collecting cylinder, the shaping hose, the air guide pipe, the air expansion pipe, the rubber pipe, the sealing ring, the turbo fan, the tail cover, the exhaust port, the air filter element and the adapter pipe. By using this method, on the one hand, the vision of the staff can be ensured to be clear, and on the other hand, the risk of the dust raised during grinding threatening the health is reduced.

2. The utility model facilitates the staff to protect and shield the grinding wheel in the standby state through the mutual cooperation of the shielding plate and the limiting plate, thereby reducing the possibility of collision of the grinding wheel.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic diagram of the overall structure of the utility model;

Figure 2 is a cross-sectional view of the overall structure of the utility model;

FIG3 is a schematic diagram of the structure of the gas collecting pipe and the dust collecting cylinder of the utility model.

Explanation of marks in the figure: 1. Machine body; 101. Driving part; 102. First transmission shaft; 103. Bearing seat; 104. First bevel gear; 2. Machine head; 201. Second transmission shaft; 202. Second bevel gear; 3. First auxiliary handle; 4. Second auxiliary handle; 5. Protective cover; 501. Shielding plate; 502. Adapter shaft; 503. Limiting plate; 6. Grinding wheel; 7. Dust suction assembly; 701. Air collecting pipe; 702. Fixing seat; 703. Dust collecting cylinder; 704. Molding hose; 705. Air guide pipe; 706. Air expansion pipe; 707. Rubber pipe; 708. Sealing ring; 709. Turbine fan; 710. Tail cover; 711. Exhaust port; 712. Air filter element; 713. Adapter pipe.

DETAILED DESCRIPTION

In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and/or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and/or settings discussed.

In order to better understand the purpose, structure and function of the utility model, the brushless angle grinder of the utility model is further described in detail below in conjunction with the accompanying drawings.

As shown in Figures 1-3, a brushless angle grinder of the utility model includes a body 1, a head 2, a protective cover 5 and a grinding wheel 6. The body 1 is connected to the head 2 by fasteners, the protective cover 5 is arranged in the lower middle part of the head 2, the grinding wheel 6 is located inside the protective cover 5, and the outer surface of the grinding wheel 6 and the inner surface of the protective cover 5 are arranged with a gap matching. A first auxiliary handle 3 is detachably installed on the outside of the body 1 away from the head 2, and a second auxiliary handle 4 is detachably installed on the outside of the head 2 for cooperating with the first auxiliary handle 3 to support the whole device. The device also includes: a dust suction component 7 for absorbing dust raised during grinding.

Among them, a first transmission shaft 102 is arranged inside the fuselage 1, and bearing seats 103 for supporting the first transmission shaft 102 are arranged at both ends of the outside of the first transmission shaft 102, and the bearing seats 103 are connected to the fuselage 1, and the first transmission shaft 102 is rotatably connected to the bearing seats 103 through bearings, one end of the first transmission shaft 102 is connected and assembled with the output end of the external driving member 101 through a coupling, and a first bevel gear 104 is arranged in the middle of the other end of the first transmission shaft 102, and the first bevel gear 104 is connected to the first transmission shaft 102, and a second transmission shaft 201 is rotatably installed inside the head 2 through a bearing for driving the grinding wheel 6, and a second bevel gear 202 is arranged on the outer wall of the second transmission shaft 201 at the position of the first bevel gear 104, and the second bevel gear 202 is connected to the second transmission shaft 201, and the second bevel gear 204 is connected to the second transmission shaft 201. The gear 202 is meshed with the first bevel gear 104, the second transmission shaft 201 is assembled with the grinding wheel 6 through a pressing flange connection, the upper end surface of the protective cover 5 is located at the position of the fuselage 1 and a transfer shaft 502 is provided for fixing the protective cover 5, one end of the transfer shaft 502 is connected to the protective cover 5, and the other end of the transfer shaft 502 is connected to the fuselage 1, the outer wall of the protective cover 5 is provided with a shielding plate 501 for shielding the grinding wheel 6, the shielding plate 501 is designed in an arc-shaped structure, the shielding plate 501 and the protective cover 5 are slidably arranged, and the outside of the protective cover 5 is provided with a limit plate 503 for guiding and limiting the shielding plate 501 during the sliding process, the limit plate 503 is connected to the protective cover 5, the limit plate 503 is designed in a U-shaped structure, and a plurality of limit plates 503 are provided, and the plurality of limit plates 503 are distributed in a semicircular shape with equal intervals.

Specifically, the dust collection assembly 7 includes an air collecting pipe 701 arranged above the grinding wheel 6 for collecting dust, and a dust collecting cylinder 703 arranged below the fuselage 1 for storing impurities. The air collecting pipe 701 is designed in an arc-shaped structure. A fixing seat 702 for supporting and fixing the dust collecting cylinder 703 is arranged in the middle of the outer wall of the dust collecting cylinder 703. The fixing seat 702 is connected to the fuselage 1. The middle of the upper end surface of the air collecting pipe 701 is provided with a fixing seat 702 for supporting and fixing the dust collecting cylinder 703. A shaping hose 704 is provided for support and position adjustment, one end of the shaping hose 704 is connected to the air collecting pipe 701, and the other end of the shaping hose 704 is connected to the machine head 2. The outside of the air collecting pipe 701 is semicircular and has multiple air guide pipes 705 arranged at equal intervals. The air guide pipes 705 are connected to the air collecting pipe 701, and an air expansion pipe 706 is fixedly installed at the end of the air guide pipe 705 for cooperating with the air guide pipe 705 to suck the raised dust into the air collecting pipe 701. The air expansion pipe 706 is trumpet-shaped.

Specifically, a transfer tube 713 is provided on the outside of the dust collecting tube 703, and a rubber tube 707 is provided on the outside of the transfer tube 713, which is used to cooperate with the transfer tube 713 to guide the dust inside the gas collecting tube 701 into the dust collecting tube 703. The transfer tube 713 is connected to the dust collecting tube 703, one end of the rubber tube 707 is connected to the transfer tube 713, and the other end of the rubber tube 707 is connected to the gas collecting tube 701. The inner cavity of the dust collecting tube 703, the inner cavity of the transfer tube 713, the inner cavity of the rubber tube 707, and the inner cavity of the gas collecting tube 701 are connected. A turbine fan 709 for guiding gas is installed inside the dust barrel 703, an air filter element 712 is provided inside the dust barrel 703 away from the turbine fan 709 for blocking dust, a sealing ring 708 is provided outside the air filter element 712 for sealing the joint, the outer wall of the sealing ring 708 is in contact with the inner wall of the dust barrel 703, a tail cover 710 is detachably installed on the outside of the dust barrel 703, and an exhaust port 711 is opened through the middle of the tail cover 710 for discharging gas.

According to the above, the utility model sets a dust suction component 7. When in use, the dust raised during the grinding process can be absorbed and stored on a large scale through the cooperation of the air collecting pipe 701, the fixing seat 702, the dust collecting cylinder 703, the shaping hose 704, the air guide pipe 705, the air expansion pipe 706, the rubber tube 707, the sealing ring 708, the turbine fan 709, the tail cover 710, the exhaust port 711, the air filter element 712 and the adapter tube 713. In this way, on the one hand, the staff's vision can be guaranteed to be clear, and on the other hand, the risk of health threat caused by the dust raised during grinding is reduced. The utility model cooperates with the baffle plate 501 and the limit plate 503 to facilitate the staff to protect and shield the grinding wheel 6 in the standby state, thereby reducing the possibility of collision of the grinding wheel 6.

It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims (8)

1. The utility model provides a brushless angle grinder, includes fuselage (1), aircraft nose (2), protection casing (5) and emery wheel (6), fuselage (1) are connected through the fastener with aircraft nose (2), protection casing (5) set up in the below middle part of aircraft nose (2), emery wheel (6) are located the inside of protection casing (5), its characterized in that: further comprises: dust absorption subassembly (7) for carrying out absorbing to the dust that lifts up in polishing process, dust absorption subassembly (7) are including setting up gas gathering tube (701) in emery wheel (6) top position to and set up dust collection tube (703) in fuselage (1) below position, the outside of gas gathering tube (701) is semi-circular equidistant a plurality of air ducts (705) that are provided with, air duct (705) are connected with gas gathering tube (701), the end fixed mounting of air duct (705) has air expanding tube (706), air expanding tube (706) are loudspeaker form, the outside of dust collection tube (703) is provided with adapter tube (713), the outside of adapter tube (713) is provided with rubber tube (707), adapter tube (713) are connected with adapter tube (713), and the other end of rubber tube (707) is connected with gas gathering tube (701), the internally mounted of dust collection tube (703) has turbine fan (709) that are used for carrying out the drainage to gas, the inside turbine fan (703) is kept away from air filter core (709) position.

2. A brushless angle grinder as claimed in claim 1, wherein: the external surface of emery wheel (6) and the internal surface clearance fit setting of protection casing (5), the outside of fuselage (1) is kept away from aircraft nose (2) one end demountable installation has first auxiliary handle (3), the outside demountable installation of aircraft nose (2) has second auxiliary handle (4).

3. A brushless angle grinder as claimed in claim 1, wherein: the inside of fuselage (1) is provided with first transmission shaft (102), the outside both ends of first transmission shaft (102) are provided with and are used for right bearing frame (103) that first transmission shaft (102) supported, bearing frame (103) are connected with fuselage (1), first transmission shaft (102) are connected through bearing rotation with bearing frame (103), the one end of first transmission shaft (102) passes through the coupling joint assembly with the output of outside driving piece (101), and the other end middle part of first transmission shaft (102) is provided with first bevel gear (104), first bevel gear (104) are connected with first transmission shaft (102).

4. A brushless angle grinder according to claim 3, wherein: the inside of aircraft nose (2) is installed through the bearing rotation second transmission shaft (201), the outer wall of second transmission shaft (201) is located first bevel gear (104) position and is provided with second bevel gear (202), second bevel gear (202) are connected with second transmission shaft (201), second bevel gear (202) and first bevel gear (104) meshing set up, second transmission shaft (201) and emery wheel (6) pass through preforming flange joint assembly.

5. A brushless angle grinder as claimed in claim 1, wherein: the upper end face of protection casing (5) is located fuselage (1) position and is provided with changeover axle (502), the one end and the protection casing (5) of changeover axle (502) are connected, and the other end and the fuselage (1) of changeover axle (502) are connected, the outer wall of protection casing (5) is provided with and is used for carrying out shielding plate (501) that shelter from grinding wheel (6), shielding plate (501) are arc structural design.

6. A brushless angle grinder as defined in claim 5, wherein: the anti-theft protection cover is characterized in that the shielding plate (501) and the protection cover (5) are arranged in a sliding mode, a limiting plate (503) used for guiding and limiting the shielding plate (501) in the sliding process is arranged outside the protection cover (5), the limiting plate (503) is connected with the protection cover (5), the limiting plate (503) is of a U-shaped structural design, a plurality of limiting plates (503) are arranged, and the limiting plates (503) are distributed in a semicircular equidistant mode.

7. A brushless angle grinder as claimed in claim 1, wherein: the utility model discloses a dust collection device, including dust collection tube (703), fuselage (1), air gathering tube (701), fixing base (702), shaping hose (704) that air gathering tube (701) is arc structural design, the outer wall middle part of dust collection tube (703) is provided with and is used for right dust collection tube (703) supports and fixed fixing base (702), fixing base (702) are connected with fuselage (1), the up end middle part of air gathering tube (701) is provided with and is used for right air gathering tube (701) supports and positional adjustment's shaping hose (704), the one end and the air gathering tube (701) of shaping hose (704) are connected, and the other end and the aircraft nose (2) of shaping hose (704) are connected.

8. A brushless angle grinder as claimed in claim 1, wherein: the dust collection device is characterized in that the inner cavity of the dust collection tube (703), the inner cavity of the adapter tube (713), the inner cavity of the rubber tube (707) and the inner cavity of the gas gathering tube (701) are communicated, a sealing ring (708) used for sealing the joint is arranged outside the air filter element (712), the outer wall of the sealing ring (708) is in contact with the inner wall of the dust collection tube (703), a tail cover (710) is detachably arranged outside the dust collection tube (703), and an exhaust port (711) is formed in the middle of the tail cover (710) in a penetrating mode.