Dual-insulation high-voltage brushless angle grinder

Abstract

The utility model relates to a double-insulation high-voltage brushless angle grinder which comprises an upper machine shell and a lower machine shell, and the upper machine shell and the lower machine shell are oppositely combined to form a containing space. The head shell is connected to the front ends of the upper machine shell and the lower machine shell, and an output shaft is arranged in the head shell; the motor shell is arranged in the containing space, a motor is arranged in the motor shell, the motor is provided with a main shaft, the main shaft is meshed with the output shaft, and an insulation isolation sleeve is arranged between the motor shell and the head shell. According to the utility model, the performance of the high-power high-voltage brushless angle grinder is particularly improved, and the dual-insulation effect is realized.

Description

Technical Field

[0001] This utility model relates to the field of angle grinder technology, and in particular to a high-pressure brushless angle grinder. Background Technology

[0002] In existing high-pressure brushless angle grinders, the motor housing and the front head housing are made of aluminum. The motor is fixed inside the motor housing. Since the motor is high-voltage, it does not meet the double insulation requirements from a safety perspective. Utility Model Content

[0003] The purpose of this utility model is to address the problems existing in the prior art by providing a high-voltage brushless angle grinder with a stable motor fixation, ensuring the insulation effect of the high-voltage brushless product.

[0004] To achieve the above objectives, the basic technical solution of this utility model is as follows: a double-insulated high-pressure brushless angle grinder, comprising: an upper housing and a lower housing, which are joined together to form a receiving space; a head housing, which is connected to the front end of the upper housing and the lower housing, wherein an output shaft is provided inside the head housing; and a motor housing, which is disposed within the receiving space, wherein a motor is disposed inside the motor housing, the motor having a main shaft that meshes with the output shaft, and an insulating isolation sleeve is provided between the motor housing and the head housing.

[0005] Furthermore, the motor includes a stator and a rotor, the rotor having a main shaft, the stator being tightly fitted with the housing, and insulating paper being provided between the windings of the stator and the rotor.

[0006] Furthermore, the head shell is made of aluminum, while the isolation sleeve is made of plastic.

[0007] Furthermore, the outer side of the motor housing is provided with heat dissipation fins, which are evenly distributed along the circumference of the motor housing and extend axially.

[0008] Furthermore, the motor housing is cylindrical and made of aluminum.

[0009] Furthermore, a bearing housing is provided inside the head shell, and a bearing is installed on the bearing housing. The bearing is sleeved on the output shaft, which has an upper pressure plate and a lower pressure plate. The working tool is installed between the upper pressure plate and the lower pressure plate.

[0010] The beneficial effects of this utility model are:

[0011] The motor housing and head housing are integrated into one unit, which is then installed into the upper and lower housings, increasing the overall stability of the high-power, high-pressure brushless angle grinder.

[0012] A plastic insulating sleeve is used between the motor housing and the head housing to ensure the insulation effect of the high-power, high-voltage brushless angle grinder.

[0013] The stator and the motor housing are tightly fitted together, and the stator and windings are separated by insulating paper to achieve double insulation. Attached Figure Description

[0014] Figure 1 The structure of this utility model of high-pressure brushless angle grinder Figure 1 .

[0015] Figure 2 The structure of this utility model of high-pressure brushless angle grinder Figure 2 .

[0016] Figure 3 The structure of this utility model of high-pressure brushless angle grinder Figure 3 .

[0017] Explanation of reference numerals in the attached drawings: Head housing 11; Output shaft 12; Bearing seat 13; Bearing 14; Upper pressure plate 15; Lower pressure plate 16; Lower housing 17; Motor housing 18; Motor 19; Stator 20; Rotor 21; Main shaft 22; Insulating sleeve 23. Detailed Implementation Example

[0018] like Figure 1 and Figure 2 As shown, this embodiment of a double-insulated high-pressure brushless angle grinder includes: an upper housing and a lower housing 17, which are joined together to form a receiving space; a head housing 11, which is connected to the front end of the upper housing and the lower housing 17, wherein an output shaft 12 is provided inside the head housing 11, and the output shaft 12 is connected to the working tool; and a motor housing 18, which is disposed within the receiving space, wherein a motor 19 is provided inside the motor housing 18, the motor 19 having a main shaft 22, the main shaft 22 meshing with the output shaft 12 through a gear transmission device, and an insulating isolation sleeve 23 is provided between the motor housing 18 and the head housing 11 to ensure the stability of the motor 19 while achieving a second layer of insulation for the high-pressure brushless angle grinder.

[0019] The head shell 11 is provided with a bearing seat 13, and a bearing 14 is installed on the bearing seat 13. The bearing 14 is sleeved on the output shaft 12. The output shaft 12 has an upper pressure plate 15 and a lower pressure plate 16. The working tool is installed between the upper pressure plate 15 and the lower pressure plate 16. The head shell 11 is made of aluminum, and the insulating sleeve 23 is made of plastic.

[0020] The motor 19 includes a stator 20 and a rotor 21. The rotor 21 has a main shaft 22. The stator 20 is tightly fitted to the housing to further ensure the stability of the motor. Insulating paper is placed between the windings of the stator 20 and the rotor 21 to achieve the first layer of insulation.

[0021] The motor housing 18 is cylindrical and made of aluminum. The aluminum housing is fixed in a way that ensures the motor is securely fixed. Furthermore, the aluminum housing is machined to ensure its concentricity and guarantee the stability of the high-power, high-pressure brushless angle grinder.

[0022] To improve the heat dissipation of the motor housing 18, heat dissipation fins are provided on the outer side of the motor housing 18. The heat dissipation fins are evenly distributed along the circumference of the motor housing 18 and extend axially.

[0023] The working principle of this utility model is as follows: Figure 3 As shown, the motor housing 18 and head housing 11 form a single unit, which is then installed inside the upper and lower housings 17, increasing the overall stability of the high-power, high-pressure brushless angle grinder. A plastic insulating sleeve is used between the motor housing 18 and the head housing 11 to ensure the insulation effect of the high-power, high-pressure brushless angle grinder. The motor stator 20 is tightly assembled with the motor housing 18, and the motor stator 20 and the windings are isolated by insulating paper to achieve double insulation. Then, a plastic insulating sleeve is added between the motor and the head housing 11 to achieve double insulation; this structural design is used in high-pressure brushless products.

[0024] In addition to the embodiments described above, this utility model may have other implementations. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by this utility model.

Claims

1. A double-insulated high-voltage brushless angle grinder, characterized in that: include: The upper and lower housings fit together to form an accommodating space. The head housing is connected to the front end of the upper housing and the lower housing, and the output shaft is installed inside the head housing; A motor housing is set within a receiving space, wherein a motor is installed inside the motor housing. The motor has a main shaft that meshes with an output shaft. An insulating sleeve is provided between the motor housing and the head housing.

2. The high-pressure brushless angle grinder according to claim 1, characterized in that: The motor includes a stator and a rotor. The rotor has a main shaft. The stator is tightly fitted with the housing. Insulating paper is placed between the windings of the stator and the rotor.

3. The high-pressure brushless angle grinder according to claim 2, characterized in that: The head shell is made of aluminum, and the insulating sleeve is made of plastic.

4. The high-pressure brushless angle grinder according to claim 3, characterized in that: The outer side of the motor housing is provided with heat dissipation fins, which are evenly distributed along the circumference of the motor housing and extend axially.

5. The high-pressure brushless angle grinder according to claim 4, characterized in that: The motor housing is cylindrical and made of aluminum.

6. The high-pressure brushless angle grinder according to claim 5, characterized in that: The head housing is equipped with a bearing seat, on which a bearing is installed. The bearing is sleeved on the output shaft, which has an upper pressure plate and a lower pressure plate. The working tool is installed between the upper pressure plate and the lower pressure plate.

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