CN110948347A

CN110948347A - an angle grinder

Info

Publication number: CN110948347A
Application number: CN201911162956.0A
Authority: CN
Inventors: 陆红飚
Original assignee: Ningbo Yaosheng Tool Industry Co ltd
Current assignee: Ningbo Yaosheng Tool Industry Co ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-04-03

Abstract

The invention discloses an angle grinder which comprises a shell, wherein the shell comprises a machine head, and the machine head is made of plastics; the aircraft nose includes left aircraft nose shell and right aircraft nose shell, left side aircraft nose shell with be provided with a plurality of bolt hole on the right aircraft nose shell, both connect the installation by the bolt. The invention has the advantages of simple manufacture, few assembly steps, clear flow and difficult error, thereby improving the yield and reducing the manufacture cost.

Description

Angle grinder

Technical Field

The invention relates to an angle grinder.

Background

An angle grinder, also called a grinder or a disc grinder, is an abrasive tool for cutting and grinding glass fiber reinforced plastics. The angle grinder is a portable electric tool for cutting and grinding glass fiber reinforced plastics, and is mainly used for cutting, grinding and brushing metal and stone materials.

The electric angle grinder is a machine for grinding, cutting, removing rust, and polishing metal members using a high-speed rotating sheet wheel, a rubber wheel, a wire wheel, or the like. The angle grinder is suitable for cutting, grinding and brushing metal and stone, and water is not used during operation. Guide plates must be used when cutting stone. Grinding and polishing operations can also be performed for models equipped with electronic control devices, if appropriate accessories are installed on such machines.

In the existing angle grinder, the nose of the angle grinder is made of metal materials. The metal material processing degree of difficulty is higher to in later stage assembly, need pack into the aircraft nose with inside gear train one by one, the instrument that needs to use is numerous, and easy the dress mistake, leads to the yields unable improvement. Therefore, the defects of high processing difficulty, complex assembly, low yield and high manufacturing cost exist in the prior art.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the angle grinder which has the advantages of simple manufacture, less assembly steps, clear flow and low possibility of making mistakes, thereby improving the yield and reducing the manufacture cost.

In order to solve the technical problem, the invention is solved by the following technical scheme: an angle grinder comprises a shell, wherein the shell comprises a machine head, and the machine head is made of plastics. The plastic material uses one or more combination of the following raw materials: glass fiber reinforced nylon, PC, ABS, PC and ABS alloy materials, PP, glass fiber reinforced PP and the like.

Preferably, the head is injection molded by using a mold.

Preferably, the aircraft nose includes left aircraft nose shell and right aircraft nose shell, left side aircraft nose shell with be provided with a plurality of bolt hole on the right aircraft nose shell, both connect the installation by the bolt.

Preferably, the machine head is connected with a holding part, a motor bin is arranged in the holding part, a motor is arranged in the motor bin, and heat dissipation holes are formed in the side wall of the motor bin; the motor is characterized in that a circuit bin is connected to the rear of the motor bin, a switch is arranged in the circuit bin, the switch is started by a starting button, and the starting button partially extends out of the holding portion.

Preferably, the hand-held portion is left shell and right shell, the left shell with be provided with a plurality of bolt hole on the right shell, both connect the installation by the bolt.

Preferably, a first-stage gear assembly and a second-stage gear assembly are arranged in the machine head, the first-stage gear assembly and the second-stage gear assembly are mutually kneaded, and the second-stage gear assembly is connected with a grinding plate.

Preferably, a heat dissipation port is arranged on the side wall of the first-stage gear assembly arranged in the machine head, a fan which synchronously rotates is arranged on the first-stage gear assembly, and the fan blows heat in the machine head out of the heat dissipation port.

Preferably, the end of the second stage gear assembly is provided with a clamp ring which fixedly mounts the abrasive sheet to the second stage gear assembly.

Preferably, a detaching button is arranged at the top of the machine head, the detaching button can drive the locking rod to move downwards, and the locking rod blocks the rotation of the second-stage gear assembly after moving downwards; the bottom of the disassembly button is provided with a return spring, and the end part of the locking rod is clamped in the disassembly button to enable the end part of the locking rod and the disassembly button to be moved upwards together under the action of the return spring.

Preferably, a protective cover is detachably connected below the machine head.

The invention provides an angle grinder which has the advantages of simple manufacture, few assembling steps, clear flow and low possibility of making mistakes, thereby improving the yield and reducing the manufacturing cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be discussed below, it is obvious that the technical solutions described in conjunction with the drawings are only some embodiments of the present invention, and for those skilled in the art, other embodiments and drawings can be obtained according to the embodiments shown in the drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic structural view of the housing of the present invention.

FIG. 3 is a side view of the left half shell assembly of the present invention.

Fig. 4 is a cross-sectional view of the present invention.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments described herein without the need for inventive work, are within the scope of the present invention.

As shown in fig. 1 to 4, an angle grinder comprises a housing, wherein the housing comprises a machine head 1, and the machine head 1 is made of plastic. The plastic material uses one or more combination of the following raw materials: glass fiber reinforced nylon, PC, ABS, PC and ABS alloy materials, PP, glass fiber reinforced PP and the like. Current engineering grade plastics have achieved the strength of common steel, and there are also many strengths that far exceed that of steel. Engineering plastics have many other characteristics that cannot be achieved by steel, such as: 1. chemical resistance: the chemical corrosion resistance of engineering plastics to acid, alkali and the like is much better than that of metals; 2. light specific gravity: the low density is a great advantage of plastics, so that the cost is reduced and the weight is reduced; 3. self-lubricating: the lubricating device is not used for lubricating maintenance, so that the maintenance cost can be reduced, and the accident rate can be reduced; besides, the material has many characteristics of resistance, high temperature resistance and the like, and is a good material for replacing steel and the like.

The aircraft nose 1 includes left aircraft nose shell 101 and right aircraft nose shell 102, be provided with a plurality of bolt hole on left aircraft nose shell 101 with right aircraft nose shell 102, both connect the installation by the bolt.

The machine head 1 is connected with a holding part 2, a motor bin 21 is arranged in the holding part 2, a motor 5 is arranged in the motor bin 21, and heat dissipation holes 211 are formed in the side wall of the motor bin 21; the rear of the motor chamber 21 is connected with a circuit chamber 22, a switch 221 is arranged in the circuit chamber 22, the switch 221 is started by a start button 222, and the start button 222 partially extends out of the holding part 2.

The hand-held part 2 is divided into a left shell 201 and a right shell 202, wherein a plurality of bolt holes are formed in the left shell 201 and the right shell 202, and the left shell 201 and the right shell 202 are connected and installed through bolts.

A first-stage gear assembly 6 and a second-stage gear assembly 7 are arranged in the machine head 1, the first-stage gear assembly 6 and the second-stage gear assembly 7 are kneaded with each other, and the second-stage gear assembly 7 is connected with the grinding plate 3.

A heat dissipation port 12 is formed in the side wall of a first-stage gear assembly 6 arranged in the machine head 1, a fan 61 which rotates synchronously is arranged on the first-stage gear assembly 6, and heat in the machine head 1 is blown out of the heat dissipation port 12 by the fan 61.

The end of the second-stage gear assembly 7 is provided with a clamp ring 71, and the clamp ring 71 fixedly mounts the grinding plate 3 to the second-stage gear assembly 7.

A disassembly button 8 is arranged at the top of the machine head 1, the disassembly button 8 can drive the locking rod 81 to move downwards, and the locking rod 81 moves downwards to block the rotation of the second-stage gear assembly 7; the bottom of the disassembly button 8 is provided with a return spring, and the end part of the locking rod 81 is clamped in the disassembly button 8, so that the two can move upwards together under the action of the return spring.

A protective cover 31 is detachably connected below the machine head 1.

The tail part of the hand holding part 2 is provided with a battery connecting part 4, and the battery connecting part 4 is connected with a battery which supplies power for the device.

The device provides a technical scheme of an angle grinder, and metal materials in the prior art, such as a machine head 1 supported by aluminum materials, are changed into plastic materials. In addition, the shell of the angle grinder comprises a hand holding part 2, and the existing angle grinder adopts different materials, so that the machine head 1 and the hand holding part 2 are two separated parts.

By adopting the scheme, the machine head 1 and the hand holding part 2 can be two separated independent parts or can be an integral part which is divided into a left part and a right part, and the two parts are integrated by adopting bolt refining.

When the angle grinder is assembled, the circuit part and the motor can be firstly arranged in the left shell 201, then the first-stage gear assembly 6 and the second-stage gear assembly 7 are arranged in the left machine head shell 101, then the right shell 202 and the right machine head shell 102 are covered, finally, screws are screwed in, and the two petals are combined. Or the circuit part and the motor are firstly arranged in the right shell 202, then the first-stage gear assembly 6 and the second-stage gear assembly 7 are arranged in the right head shell 102, then the left shell 201 and the left head shell 101 are covered, finally the screw is screwed in, and the two petals are combined. The installation sequence has no influence on the assembly, and other tools are not needed, so that the assembly efficiency is improved.

The plastic material is adopted to replace a metal material, so that the material cost can be reduced, the production difficulty can be reduced, and the manufacturing cost is reduced.

Engineering plastics can be used as engineering materials and plastics for replacing metal to manufacture machine parts and the like. The engineering plastic has excellent comprehensive performance, high rigidity, small creep, high mechanical strength, high heat resistance and high electric insulating property, may be used in harsh chemical and physical environment for long period, and may be used to replace metal as engineering structure material.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the invention is indicated by the appended claims, rather than the foregoing description, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An angle grinder, characterized in that it comprises a housing, the housing comprises a handpiece (1), the handpiece (1) is made of plastic, and the plastic material is glass fiber reinforced nylon or PC or A material of ABS or PC and ABS alloy material or PP or glass fiber reinforced PP, or a combination of multiple materials.

2 . The angle grinder according to claim 1 , wherein the machine head ( 1 ) is injection-molded by a mold. 3 .

3. The angle grinder according to claim 1, wherein the handpiece (1) comprises a left handpiece (101) and a right handpiece (102), the left handpiece (101) and Several bolt holes are provided on the right head shell (102), and the two are connected and installed by bolts.

4. The angle grinder according to claim 2, characterized in that: the handpiece (1) is connected with a hand grip (2), and a motor compartment (21) is arranged in the hand grip (2), so The motor compartment (21) is provided with a motor (5), the side wall of the motor compartment (21) is provided with heat dissipation holes (211); a circuit compartment (22) is connected behind the motor compartment (21), so A switch (221) is arranged in the circuit compartment (22), and the switch (221) is activated by a start button (222), and the start button (222) partially protrudes out of the handle portion (2).

5. The angle grinder according to claim 3, characterized in that: the grip portion (2) is divided into a left shell (201) and a right shell (202), the left shell (201) and the right shell (202) is provided with several bolt holes, and the two are connected and installed by bolts.

6. The angle grinder according to claim 2, characterized in that: a first-stage gear assembly (6) and a second-stage gear assembly (7) are arranged in the machine head (1), the first-stage gear assembly (7) The assembly (6) and the second-stage gear assembly (7) are kneaded with each other, and the second-stage gear assembly (7) is connected with a grinding plate (3).

7. The angle grinder according to claim 5, characterized in that: a heat dissipation port (12) is provided on the side wall of the first stage gear assembly (6) in the machine head (1), and the first stage gear assembly (6) is provided with a cooling port (12). The gear assembly (6) is provided with a fan (61) that rotates synchronously, and the fan (61) blows the heat in the machine head (1) out of the heat dissipation port (12).

8 . The angle grinder according to claim 5 , wherein a pressing ring ( 71 ) is provided at the end of the second stage gear assembly ( 7 ), and the pressing ring ( 71 ) tightens the grinding disc. 9 . (3) Fixedly mounted on the second stage gear assembly (7).

9 . The angle grinder according to claim 5 , characterized in that a disassembly button ( 8 ) is provided on the top of the handpiece ( 1 ), and the disassembly button ( 8 ) can drive the locking lever ( 81 ) down. 10 . After moving down, the locking lever (81) blocks the rotation of the second-stage gear assembly (7); the bottom of the dismounting button (8) is provided with a return spring, and the locking lever (81) The ends are snapped into the dismantling button (8) so that the two can be moved up together by the return spring.

10. The angle grinder according to claim 1, characterized in that: a protective cover (31) is detachably connected under the handpiece (1).