RU182288U1 - PORTABLE ANGULAR GRINDING MACHINE - Google Patents

Abstract

The useful model refers to a manual power tool, namely, to a manual type of grinder designed for cutting, grinding and cleaning products from various materials. The angle grinder contains a housing mounted in the housing of the motor, a gearbox connected to the motor with a drive shaft and a protective disk the casing, as well as the handle and the interference suppression capacitor and electronic engine speed controller located in the handle, which is characterized in that the electronic controller The engine performs the function of an internal stiffener, and the noise suppressing capacitor has a parallelepiped shape and is adjacent to the body of the electronic engine speed controller with its widest side. The technical result of the proposed utility model consists in increasing the ergonomic characteristics of an angle grinder, namely, reducing the dimensions, increasing internal usable volume.

Description

PORTABLE ANGULAR GRINDING MACHINE

The utility model relates to a manual power tool, namely, to a manual type of grinding machine designed for cutting, grinding and grinding products from various materials.

Currently known manual angle grinders, which are widely used in everyday life when performing operations related to cutting, grinding, grinding, etc. All these devices have a similar layout and consist of a housing, an electric motor, an angular gearbox, a spindle on which the working disk is mounted, and two handles.

In particular, the angle grinder according to patent RU2544712, class. B24B 23/02, B24B 45/00, B25F 5/02, publ. 03/20/15.

The disadvantage of this tool is that due to the presence of a handle connected and parallel to the casing, the angle grinder has enlarged dimensions, which makes it inconvenient to use, carry and store.

Known portable electric grinder according to patent US4735020, class. B24B 23/00, G05G 5/06, publ. 04/05/88, which has a layout similar to the aforementioned tool, with the exception of a handle connected to and parallel to the body. The handle function is performed by the body itself.

The dimensions of the angle grinder depend on its power. The greater the power of the tool, the more powerful, and, therefore, with larger overall dimensions, the electric motor should be used in the tool. For example, the Bosch GWS9-125S angle grinder with a rated power of 900 W has the following housing dimensions: length 289 mm, height 70 mm. As a result, holding this tool by the case is not very convenient.

It is also known from the general state of the art that at present angle grinders use a noise suppressing capacitor and an electronic engine speed controller, while usually the capacitor is placed in the zone of entry into the device’s power cord and is reinforced with an internal stiffener for protection.

The disadvantage of this solution is to increase the dimensions of the product.

The technical result of the proposed utility model is to increase the ergonomic characteristics of the angle grinder, namely, reduce its size, increase the volume of internal usable space.

The specified technical result is achieved in that the angle grinder comprises a housing, an engine mounted in the housing, a reducer connected to the engine with a drive disk installation shaft, a protective cover, as well as a handle and an interference suppression capacitor and an electronic engine speed controller located in the handle, and is characterized in that the electronic engine speed controller performs the function of a stiffener, and the noise suppressing capacitor is parallelepiped-shaped and is adjacent to the body of the electronic reg engine speed regulator with its widest side.

In a particular case, the engine installed in the housing has a power of at least 1000 watts.

In a particular case, the length of the housing does not exceed 272 mm, and the height of the gripping part of the housing does not exceed 61 mm.

The proposed utility model is illustrated by the following drawings:

FIG. 1 - angle grinder, top view;

FIG. 2 - handle of an angle grinder, side view;

FIG. 3 is a schematic illustration of a handle of an angle grinder, a sectional side view;

FIG. 4 is an assembly view of a handle mechanism of an angle grinder, a three-quarter view;

FIG. 5 is a schematic illustration of the handle of the closest analogue of the grinding machine, a side view in section;

FIG. 6 is an assembly view of the handle mechanism of the closest analogue of an angle grinder, a three-quarter view.

An angle grinder (see Figs. 1, 2, 3, and 4) consists of a housing 1, with an engine located inside with an electronic speed control 9 and a gearbox (not shown in the drawings) on whose shaft a working disk 2, a protective casing 3 and handles 4. On the housing 1 there is a power button 5. Connection to the power supply is carried out by cord 6.

The housing 1 is made in such a way that its length L does not exceed 272 mm, and the height H (see Fig. 2) of the gripping part of the housing does not exceed 61 mm. In this case, the grinder has a power of 1000 W or more.

The reduction in size is achieved by the proposed layout: installing a capacitor and an electronic speed controller so that the capacitor 8 is placed close to the speed controller 9, as a result of which the controller performs the function of a stiffener and the capacitor is perpendicular to the common axis of the handle. Thus, the regulator acts as a handle stiffener.

In FIG. 5 and 6 show the previous analogue, in which the parallelepiped-based capacitor is located with its widest side along the body and is protected by a stiffener 10 (polymer part). With this solution, the useful internal volume of the product is not used, the dimensions increase, voids appear.

Angle grinder operates as follows.

Before work, the tool must be connected to the power supply using the cord 6. The engine is switched on with button 5. To prevent voltage surges when turned on, a capacitor is used. The torque from the engine is transmitted through the gearbox to the working disk 2. The person performs the necessary work with the grinder, holding it by the handle 4 and the housing 1. Due to the fact that the capacitor and the speed controller are optimally arranged, the housing is made within the above dimensions, and therefore keep the tool has become more convenient, it has also become more compact than its well-known counterparts, which facilitates the storage and carrying of the tool.

Thus, the solutions used in the utility model make it possible to create the design of an angle grinder, ensuring the convenience of its use, transportation, and storage.

Claims (3)

1. Angle grinder, comprising a housing with a handle, an engine mounted in the housing, a gearbox connected to the engine with a shaft for installing the working disk, a protective casing and an interference suppression capacitor and an electronic engine speed controller located in the handle, characterized in that the electronic engine speed controller is made with the formation of an internal stiffening rib in the handle, and the noise suppressing capacitor has the shape of a parallelepiped and is mounted adjacent to the electronic engine speed controller Gatel with its wide side. 2. An angle grinder according to claim 1, characterized in that the noise suppressing capacitor is placed across the common axis of the housing.
3. An angle grinder according to claim 1 or 2, characterized in that the engine installed in the housing has a power of at least 1000 watts. 4. An angle grinder according to claim 1 or 2, characterized in that the body length does not exceed 272 mm and the height of its gripping part does not exceed 61 mm.

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