CN218225987U

CN218225987U - Improved angle grinder

Info

Publication number: CN218225987U
Application number: CN202121806774.5U
Authority: CN
Inventors: 李越
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2023-01-06
Anticipated expiration: 2031-08-04

Abstract

The utility model provides an improved angle grinder, which comprises a left shell and a right shell, wherein the left shell and the right shell form a holding body part, a switch push rod and a motor are arranged in the holding body part, the lower part of the holding body part is fixedly connected with a lithium battery module, and the upper part of the holding body part is fixedly connected with a machine head part; the motor is fixed in the shell through the motor fixing bracket; one end of the transmission shaft is connected with the output end of the motor, the fan is fixed on the transmission shaft through a bearing, and the other end of the transmission shaft is fixedly connected with a first gear; a second gear meshed with the first gear is arranged inside the machine head piece, and the flake grinding wheel is fixed with an output shaft of the second gear through a bearing. The angle grinder of the utility model adopts an independent transmission shaft design in front of the motor and is provided with the fan, when the motor works, the fan is driven to rotate at the same time, the heat dissipation is carried out on the motor, the service life of the equipment is prolonged, and dust can be prevented from entering the shell as much as possible; the angle grinder is small in size, convenient to install and low in energy consumption.

Description

Improved angle grinder

Technical Field

The utility model relates to an electric tool technical field especially relates to a modified angle mill of light environmental protection.

Background

An angle grinder, also called a grinder or a disc grinder, is a commonly used electric tool for cutting and grinding materials; the cutting, grinding and brushing machine is mainly used for cutting, grinding and brushing metal, stone, plastic and the like. An angle grinder is a machine that performs machining operations such as grinding, cutting, and polishing of a member or material using a sheet grinding wheel rotating at a high speed.

The current electric tools generally adopt lithium batteries as working power supplies, so that the portability, portability and low energy consumption are one of the most important use requirements of the electric tools; in addition, when the angle grinder is used, a large amount of dust is generated, and the dust is prevented from entering the machine body as much as possible, so that electronic components such as a motor and the like in the machine body are protected, and the service life of the angle grinder is prolonged; in addition, as the current electric tools are developed to be small and light, the compact structure and the heat dissipation performance of the motor are important considerations for the design of the electric tools.

SUMMERY OF THE UTILITY MODEL

To current angle mill in use's demand, the utility model aims at providing an improved angle mill, light easy installation reduces the energy consumption and guarantees the permanent life of angle mill.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an improved angle grinder comprises a left shell and a right shell, wherein the left shell and the right shell are combined and fixed to form a holding body part of the angle grinder, a switch push rod and a motor are arranged in the holding body part, the lower part of the holding body part is fixedly connected with a lithium battery module, and the upper part of the holding body part is fixedly connected with a machine head part; the motor is fixed in the shell through the motor fixing support; one end of the transmission shaft is connected with the output end of the motor, the fan is fixed on the transmission shaft through a bearing in front of the motor, and the other end of the transmission shaft is fixedly connected with the first gear; the top of the machine head part is provided with a button, the interior of the machine head part is provided with a second gear meshed with the first gear, and the sheet grinding wheel is fixed with an output shaft of the second gear through a bearing; a grinding wheel disc fixing piece is also arranged in the machine head piece, and a fan cover with a semicircular structure is arranged on the back side of the grinding wheel disc; when the sheet grinding wheel is in work, the power output by the motor drives the first gear and the second gear meshed with the first gear to rotate through the transmission shaft, and then the sheet grinding wheel is driven to rotate at a high speed to perform cutting or polishing operation.

Preferably, dust exhaust holes are formed in two sides of the machine head piece.

Preferably, the motor is an integrated motor formed by encapsulating the motor and the controller in a shell.

The improved angle grinder of the utility model adopts an independent transmission shaft design in front of the motor and is provided with the fan, when the motor works, the fan is driven to rotate at the same time, the heat dissipation is carried out on the motor, the service life of the equipment is prolonged, and the dust can be prevented from entering the shell as much as possible by combining the design of the dust exhaust hole, thereby protecting the electronic components in the shell on the one hand, and on the other hand, the dust can be prevented from entering the working components as much as possible to increase the resistance during working, thereby reducing the energy loss of the lithium battery; and an integrated motor design is adopted, so that the size of the equipment is reduced, and the installation is convenient.

Drawings

FIG. 1 is a schematic view of a three-dimensional explosion structure of the improved angle grinder of the present invention;

in the drawings, the element numbers and names are as follows:

10-left shell; 12-a switch push rod; 14-a nose piece; 142-a button; 144-dust exhaust holes; 16-a grinder plate fixture; 18-wind shield; 19-grinding wheel disc; 20-a right housing; 26-a first gear; 30-a motor; 32-motor fixing bracket; 34-a drive shaft; 36-a second gear; 40-a fan.

Detailed Description

In order to further understand the objects, structures, features, and functions of the present invention, the following embodiments are described in detail.

Referring to fig. 1, the improved angle grinder of the present invention includes a left housing 10 and a right housing 20, the left housing 10 and the right housing 20 are combined and fixed to form a holding body of the angle grinder, a switch push rod 12 and a motor 30 are disposed in the holding body, a lower portion of the switch push rod is fixedly connected to a lithium battery module, and an upper portion of the switch push rod is fixedly connected to a head 14; the motor 30 is fixed in the shell through a motor fixing bracket 32; one end of the transmission shaft 34 is connected with the output end of the motor 30, the fan 40 is fixed on the transmission shaft 34 through a bearing 42, and the other end of the transmission shaft 34 is fixedly connected with the first gear 26; the top of the machine head part 14 is provided with a button 142, the interior is provided with a second gear 36 meshed with the first gear 26, and the flake grinding wheel is fixed with an output shaft of the second gear 36 through a bearing 182; a grinding wheel disk fixing piece 16 is also arranged in the head piece 14, and a fan cover 18 with a semicircular structure is arranged on the back side of the grinding wheel disk 19; in operation, the power output from the motor 30 drives the first gear 26 and the second gear 36 engaged therewith to rotate via the transmission shaft 34, so as to drive the sheet grinding wheel to rotate at high speed for cutting or polishing.

In the above embodiment of the application, the additional transmission shaft 14 is fixedly connected with the output end of the motor 30, and then the fan is arranged on the transmission shaft and in front of the motor, and the fan is driven to rotate while the motor drives the working part (gear) to act, so that on one hand, the air circulation inside the housing of the angle grinder can be accelerated, the motor is well cooled, overheating is avoided, and the service life of the motor is prolonged; in addition, dust generated in cutting or grinding can be prevented from entering the shell, and adverse effects on electronic components in the shell can be avoided. In a preferred embodiment, the head piece 14 is provided with dust exhaust holes 144 at both sides thereof, so that dust entering the inside of the angle grinder can be exhausted by the fan.

In another preferred embodiment, the motor 30 is an integrated motor formed by encapsulating the motor and the controller in a casing, so that the space in the casing can be saved, and the angle grinder is more miniaturized, light and portable; in addition, the design of the integrated motor can facilitate the installation of the angle grinder and improve the production efficiency.

The utility model discloses an improved angle grinder adopts independent transmission shaft design in front of the motor, and sets up the fan, when the motor is worked, drives the fan rotation simultaneously, gives the motor heat dissipation, prolongs equipment life, combines the design of dust exhaust hole, can avoid the dust to get into in the casing as far as possible, protects the electronic components inside the casing on the one hand, can avoid the dust to get into the work piece (such as gear, bearing etc.) in as far as possible on the other hand and increase the resistance of during operation, and need not additionally to set up power parts for the fan, so all can reduce the energy loss of lithium cell; and an integrated motor design is adopted, so that the equipment volume is reduced, and the installation is convenient.

The present invention has been described in relation to the above embodiments, which are only examples for implementing the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, all changes and modifications which do not depart from the spirit and scope of the present invention are deemed to fall within the scope of the present invention.

Claims

1. The improved angle grinder is characterized by comprising a left shell and a right shell, wherein the left shell and the right shell are combined and fixed to form a holding body part of the angle grinder, a switch push rod and a motor are arranged in the holding body part, the lower part of the holding body part is fixedly connected with a lithium battery module, and the upper part of the holding body part is fixedly connected with a machine head piece; the motor is fixed in the shell through a motor fixing support; one end of the transmission shaft is connected with the output end of the motor, the fan is fixed on the transmission shaft through a bearing in front of the motor, and the other end of the transmission shaft is fixedly connected with the first gear; the top of the machine head part is provided with a button, the interior of the machine head part is provided with a second gear meshed with the first gear, and the sheet grinding wheel is fixed with an output shaft of the second gear through a bearing; a grinding wheel disc fixing piece is also arranged in the machine head piece, and a fan cover with a semicircular structure is arranged on the back side of the grinding wheel disc; when the sheet grinding wheel is in work, the power output by the motor drives the first gear and the second gear meshed with the first gear to rotate through the transmission shaft, and then the sheet grinding wheel is driven to rotate at a high speed to perform cutting or polishing operation.

2. An improved angle grinder as claimed in claim 1, wherein dust exhaust holes are provided on both sides of the head member.

3. An improved angle grinder as claimed in claim 1 or 2, wherein said motor is an integral motor formed by enclosing the motor and controller in a housing.