Alternating current brushless angle grinder capable of improving safety

Abstract

The utility model discloses an alternating current brushless angle grinder capable of improving safety, and relates to the technical field of angle grinders, the alternating current brushless angle grinder comprises a machine body, a protection device is arranged at the top end of the machine body, a connecting device is arranged on one side of the top end of the machine body, the connecting device comprises a coupler, and a cutter is connected to the outer surface of the coupler in a penetrating mode. The outer surface of the coupler is in threaded connection with a limiting plate, one end of the limiting plate is fixedly connected with a sleeve, the outer surface of the sleeve is connected with a plurality of inserting rods distributed in an annular array in a penetrating mode, one ends of the inserting rods are connected with the outer surface of the coupler through bolts, and one end of the coupler is connected with a shaft seat in a penetrating mode. A plurality of key grooves distributed in an annular array mode are formed in the outer surface of the shaft seat, a plurality of flat keys matched with the key grooves for use are fixedly connected to the inner wall of the shaft seat, and according to the alternating current brushless angle grinder capable of improving safety, abraded cutters can be effectively replaced, and workers can be effectively protected.

Description

Technical Field

[0001] The present application relates to the technical field of angle grinders, and in particular to an AC brushless angle grinder with improved safety. Background Art

[0002] Angle grinders, also known as angle grinders, are divided into two categories: pneumatic and electric. Here we only analyze electric angle grinders. Electric angle grinders use high-speed rotating thin-blade grinding wheels, rubber grinding wheels, wire wheels, etc. to grind, cut, rust and polish metal components. Angle grinders are suitable for cutting, grinding and brushing metal and stone. Water cannot be used during operation. A guide plate must be used when cutting stone. For models equipped with electronic control devices, grinding and polishing operations can also be performed if suitable accessories are installed on such machines.

[0003] After checking the publication (announcement) number: CN206200695U, a brushless angle grinder is disclosed. This technology discloses "a housing assembly including a head shell and a housing connected to the head shell, a gripping portion is arranged on the outer peripheral surface of the housing; and a fan is arranged in the housing. In this way, the axial dimension of the head shell can be reduced to reduce the overall dimension of the head shell, thereby reducing the overall dimension of the brushless angle grinder. At the same time, due to the reduction in the axial dimension of the head shell, the housing connected to the head shell is closer to the working head relative to the current angle grinder, thereby enabling the housing to be moved forward, thereby enabling the gripping portion to be moved forward, reducing the distance between the gripping portion and the working head, reducing the force arm of the operator when holding the brushless angle grinder, facilitating the operator to hold the brushless angle grinder, and other technical solutions. The brushless angle grinder of the utility model has the advantages of simple and reliable structure, low cost, and convenient use by the operator, etc.";

[0004] With respect to the above-mentioned related technologies, the inventor believes that when an angle grinder is in use, the cutter will wear and affect its use. The existing angle grinders on the market cannot effectively replace worn cutters and cannot effectively protect workers, so there is room for improvement. Summary of the invention

[0005] The purpose of the present application is to provide an AC brushless angle grinder with improved safety, so as to improve the problem of effectively replacing worn tools and effectively protecting workers.

[0006] The AC brushless angle grinder with improved safety provided in the present application adopts the following technical solution: the AC brushless angle grinder with improved safety includes a body, a protective device is provided at the top of the body, a connecting device is provided on one side of the top of the body, the connecting device includes a coupling, a tool is connected through the outer surface of the coupling, a limit plate is threadedly connected to the outer surface of the coupling, one end of the limit plate is fixedly connected to a sleeve, a plurality of plug rods distributed in a ring array are connected through the outer surface of the sleeve, and one end of the plurality of plug rods are respectively bolted to the outer surface of the coupling.

[0007] By adopting the above technical solution, multiple rods are removed from the outer surface of the sleeve, one ends of the multiple rods are separated from the inner wall of the coupling, the limit plate is removed from the outer surface of the coupling, and the outer surface of the limit plate is separated from the inner wall of the tool, thereby achieving the purpose of effectively replacing the worn tool.

[0008] Optionally, the protective device includes two protective shells, the inner walls of the two protective shells are fixedly connected with clips that cooperate with each other, the outer surfaces of the two clips are fixedly connected with two fixing plates, and one end of each two adjacent fixing plates is commonly connected with a first bolt through bolts.

[0009] By adopting the above technical solution, the two protective shells are connected respectively, the inner walls of the two clamps are fitted together with the outer surface of the coupling, and the two fixed plates are connected respectively and the first bolts are inserted together, so that the connection between the two clamps is more stable, thereby achieving the purpose of effectively protecting the staff.

[0010] Optionally, one end of the coupling is connected through a shaft seat, the outer surface of the shaft seat is provided with a plurality of key slots distributed in a circular array, and the inner wall of the shaft seat is fixedly connected with a plurality of flat keys used in conjunction with the key slots.

[0011] By adopting the above technical solution, the keyway and the flat key can make the shaft seat and the coupling better matched for use.

[0012] Optionally, both sides of the opposite surfaces of the two card boards are provided with card slots for use in cooperation with each other. By adopting the above technical solution, the two card slots can be used in cooperation to make the connection between the two card boards more stable.

[0013] Optionally, a handle is fixedly connected to the upper portion of one end of the body, and an anti-slip groove is provided on the outer surface of the handle.

[0014] By adopting the above technical solution, the anti-slip groove on the outer surface of the handle can enable the staff to hold the machine body better.

[0015] Optionally, four finger rings distributed at equal intervals are fixedly connected to the outer surface of the body.

[0016] By adopting the above technical solution, the finger ring can enable the staff to hold the machine body better.

[0017] Optionally, the outer surface of the tool is in contact with the inner walls of the two protective shells.

[0018] By adopting the above technical solution, the cutter rotates in the inner walls of the two protective shells.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. The utility model uses a connecting device to separate one end of a plurality of plug rods from the inner wall of the coupling, remove the limit plate from the outer surface of the coupling, and separate the outer surface of the limit plate from the inner wall of the tool, thereby achieving the purpose of effectively replacing the worn tool;

[0021] 2. The utility model uses a protective device to connect two fixing plates and insert the first bolts together, so that the connection between the two clamping plates is more stable, thereby achieving the purpose of effectively protecting the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model.

[0023] Figure 2 It is a side schematic diagram of the structure of the utility model.

[0024] Figure 3 It is a schematic diagram of the connection device of the utility model.

[0025] Figure 4 It is a schematic diagram of the protective device of the utility model.

[0026] In the figure, 1, machine body; 2, protective device; 3, connecting device; 4, finger ring; 5, handle; 6, anti-slip groove; 21, protective shell; 22, clamping plate; 23, fixing plate; 24, first bolt; 25, clamping groove; 31, coupling; 32, tool; 33, limit plate; 34, sleeve; 35, plug rod; 36, shaft seat; 37, keyway; 38, flat key. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 -Attached Figure 4 , further details of this application are given.

[0028] AC brushless angle grinder with improved safety, refer to Figure 1 and Figure 3, including a body 1, a protective device 2 is provided at the top of the body 1, a connecting device 3 is provided on one side of the top of the body 1, the connecting device 3 includes a coupling 31, a tool 32 is connected through the outer surface of the coupling 31, a limit plate 33 is threadedly connected to the outer surface of the coupling 31, one end of the limit plate 33 is fixedly connected to a sleeve 34, a plurality of plug rods 35 distributed in a ring array are connected through the outer surface of the sleeve 34, and one end of the plurality of plug rods 35 are respectively bolted to the outer surface of the coupling 31.

[0029] Reference Figure 3 One end of the coupling 31 is connected to a shaft seat 36, and the outer surface of the shaft seat 36 is provided with a plurality of key grooves 37 distributed in a circular array. The inner wall of the shaft seat 36 is fixedly connected with a plurality of flat keys 38 used to cooperate with the key grooves 37. The key grooves 37 and the flat keys 38 can make the shaft seat 36 and the coupling 31 better cooperate with each other.

[0030] Reference Figure 2 A handle 5 is fixedly connected to the upper part of one end of the body 1, and an anti-skid groove 6 is provided on the outer surface of the handle 5. The anti-skid groove 6 on the outer surface of the handle 5 allows the staff to better hold the body 1.

[0031] Reference Figure 2 The outer surface of the body 1 is fixedly connected with four finger rings 4 distributed at equal intervals, and the finger rings 4 can enable the staff to better hold the body 1.

[0032] Reference Figure 3 The outer surface of the cutter 32 is in contact with the inner walls of the two protective shells 21 , and the cutter 32 rotates in the inner walls of the two protective shells 21 .

[0033] Reference Figure 3 The inner wall of one side of the tool 32 is in contact with one end of the limiting plate 33 , and the limiting plate 33 can effectively limit the tool 32 in rotation.

[0034] The implementation principle of the embodiment of the present application is: the multiple insertion rods 35 are removed from the outer surface of the sleeve 34 respectively, one ends of the multiple insertion rods 35 are separated from the inner wall of the coupling 31 respectively, the limit plate 33 is removed from the outer surface of the coupling 31, and the outer surface of the limit plate 33 is separated from the inner wall of the tool 32, thereby achieving the purpose of effectively replacing the worn tool 32.

[0035] Reference Figure 4The protective device 2 includes two protective shells 21, the inner walls of the two protective shells 21 are fixedly connected with card plates 22 that cooperate with each other, the outer surfaces of the two card plates 22 are fixedly connected with two fixing plates 23, one end of each two adjacent fixing plates 23 is commonly connected with a first bolt 24 through a bolt, and the two protective shells 21 are respectively butted, and the inner walls of the two card plates 22 are commonly fitted with the outer surface of the coupling 31, and the two fixing plates 23 are respectively butted and the first bolts 24 are commonly inserted, so that the connection between the two card plates 22 is more stable, thereby achieving the purpose of effectively protecting the staff.

[0036] Reference Figure 4 , two sides of the opposite surfaces of the two card plates 22 are provided with card slots 25 that cooperate with each other. The two card slots 25 can be used together to make the connection between the two card plates 22 more stable.

[0037] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An AC brushless angle grinder with improved safety, comprising a body (1), characterized in that: A protective device (2) is provided at the top of the machine body (1), and a connecting device (3) is provided at one side of the top of the machine body (1); The connecting device (3) comprises a coupling (31), a tool (32) is connected through the outer surface of the coupling (31), a limit plate (33) is threadedly connected to the outer surface of the coupling (31), one end of the limit plate (33) is fixedly connected to a sleeve (34), a plurality of insertion rods (35) distributed in a ring array are connected through the outer surface of the sleeve (34), and one end of the plurality of insertion rods (35) is respectively bolted to the outer surface of the coupling (31).

2. The AC brushless angle grinder with improved safety according to claim 1, characterized in that: The protective device (2) comprises two protective shells (21), the inner walls of the two protective shells (21) are fixedly connected with a clamping plate (22) used in conjunction with each other, the outer surfaces of the two clamping plates (22) are fixedly connected with two fixing plates (23), and one end of each two adjacent fixing plates (23) is commonly connected with a first bolt (24) via a bolt.

3. The AC brushless angle grinder with improved safety according to claim 1, characterized in that: One end of the coupling (31) is connected to a shaft seat (36) through which a plurality of key slots (37) distributed in a circular array are formed on the outer surface of the shaft seat (36), and a plurality of flat keys (38) matching the key slots (37) are fixedly connected to the inner wall of the shaft seat (36).

4. The AC brushless angle grinder with improved safety according to claim 2, characterized in that: Two sides of the opposite surfaces of the two clamping plates (22) are provided with clamping grooves (25) for use with each other.

5. The AC brushless angle grinder with improved safety according to claim 1, characterized in that: A handle (5) is fixedly connected to the upper portion of one end of the body (1), and an anti-slip groove (6) is provided on the outer surface of the handle (5).

6. The AC brushless angle grinder with improved safety according to claim 1, characterized in that: Four finger rings (4) distributed at equal intervals are fixedly connected to the outer surface of the body (1).

7. The AC brushless angle grinder with improved safety according to claim 1, characterized in that: The outer surface of the cutter (32) is in contact with the inner walls of the two protective shells (21).

8. The AC brushless angle grinder with improved safety according to claim 1, characterized in that: An inner wall on one side of the cutter (32) is in contact with one end of the limiting plate (33).

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