CN201030504Y - Angle grinder with good heat dissipation performance - Google Patents

Angle grinder with good heat dissipation performance Download PDF

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Publication number
CN201030504Y
CN201030504Y CNU2007201539382U CN200720153938U CN201030504Y CN 201030504 Y CN201030504 Y CN 201030504Y CN U2007201539382 U CNU2007201539382 U CN U2007201539382U CN 200720153938 U CN200720153938 U CN 200720153938U CN 201030504 Y CN201030504 Y CN 201030504Y
Authority
CN
China
Prior art keywords
motor
commutator
motor shaft
angle grinder
fan blade
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNU2007201539382U
Other languages
Chinese (zh)
Inventor
徐振丰
Original Assignee
吴世雄
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 吴世雄 filed Critical 吴世雄
Priority to CNU2007201539382U priority Critical patent/CN201030504Y/en
Application granted granted Critical
Publication of CN201030504Y publication Critical patent/CN201030504Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

An angle grinder which is good in heat dispersion comprises a handle and a shell, wherein the shell is provided inside with a motor and a motor shaft, the tail part of the motor shaft is fixed to a bearing block on the back end of the shell, the back of the motor is provided with a commutator, a wind wheel is arranged between the commutator and the bearing block, and the wind wheel is fixed to the motor shaft by a through-hole at the center of the wind wheel. And thereby, the motor shaft rotates and simultaneously drives the wind wheel to rotate, which realizes forced heat radiation for the motor and the commutator and guarantees the stability of the motor and the commutator.

Description

The electric angle grinder that a kind of thermal diffusivity is good
Technical field:
The utility model relates to a kind of electric tool, the good electric angle grinder of particularly a kind of thermal diffusivity.
Background technology:
Electric angle grinder of the prior art is various in style, be widely used in departments such as machinery, traffic, chemical industry, building, metallurgy, electric power, and the motor of existing sanding machine does not design supporting heat abstractor, or just be provided with the heat radiation fan blade at output, motor is in the middle of the running of long-time and high load capacity like this, the heat that is produced can't effectively be got rid of, and will certainly have influence on the operate as normal of motor and assembly thereof, shortens the service life of motor and assembly thereof.
The utility model content:
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and the electric angle grinder that a kind of thermal diffusivity is good, electrical machinery life is long, serviceability is stable is provided.
The good electric angle grinder of a kind of thermal diffusivity that provides according to the utility model, comprise handle and casing, motor and motor shaft are installed in the described casing, the afterbody of described motor shaft by bearing fixing on the bearing block of casing rear end, the rear side of described motor has a commutator, be provided with a fan blade between described commutator and the described bearing block, this fan blade is fixed on the described motor shaft by the through hole at its middle part.
The utility model also has following attached technical characterictic:
Described through hole is a mounting hole, and described motor shaft is being designed to flat side's shape to position that should fan blade.
According to the good electric angle grinder of a kind of thermal diffusivity that the utility model provides, prior art has following advantage relatively:
At first, near increase by one fan blade motor can increase the integral heat sink effect of motor, prolongs the service life of motor;
Secondly, fan blade is arranged on commutator one side, also can dispels the heat to commutator simultaneously, improve the service life of commutator, make commutator and machine operation all be tending towards normal.
Once more, can prevent that dust is adsorbed on motor and the interior stator coil thereof, can effectively stop the destruction of outside dust simultaneously, make motor performance stable electric machine assembly.
Description of drawings:
Introduce the utility model in detail below in conjunction with the drawings and specific embodiments.
The partial structurtes schematic diagram of the electric angle grinder that provides according to the utility model is provided Fig. 1;
Fig. 2 is the enlarged diagram at A place among Fig. 1;
Fig. 3 is the schematic side view of fan blade described in the utility model.
The specific embodiment:
Referring to figs. 1 through shown in Figure 3, the electric angle grinder that provides according to the utility model, comprise handle 1 and casing 2, motor 21 and motor shaft 22 are installed in the casing 2, the afterbody of motor shaft 22 is fixed on the bearing block 24 of casing rear end by bearing 23, the rear side of motor 21 has a commutator 25, is provided with a fan blade 26 between commutator 25 and the bearing block 24, and this fan blade 26 is fixed on the motor shaft 22 by the waist through hole 261 at its middle part.So, motor shaft 22 also drives fan blade 26 rotations in rotation, thereby motor 21 and commutator 25 are carried out forced heat radiation, guarantees the stability of the two work.

Claims (2)

1. electric angle grinder that thermal diffusivity is good, comprise handle (1) and casing (2), motor (21) and motor shaft (22) are installed in the described casing (2), the afterbody of described motor shaft (22) is fixed on the bearing block (24) of casing rear end by bearing (23), the rear side of described motor (21) has a commutator (25), it is characterized in that: be provided with a fan blade (26) between described commutator (25) and the described bearing block (24), this fan blade is fixed on the described motor shaft (22) by the through hole (261) at its middle part.
2. the good electric angle grinder of a kind of thermal diffusivity according to claim 1 is characterized in that: described through hole (261) is a mounting hole, and described motor shaft (22) is being designed to flat side's shape to position that should fan blade (26).
CNU2007201539382U 2007-05-21 2007-05-21 Angle grinder with good heat dissipation performance Expired - Fee Related CN201030504Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007201539382U CN201030504Y (en) 2007-05-21 2007-05-21 Angle grinder with good heat dissipation performance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007201539382U CN201030504Y (en) 2007-05-21 2007-05-21 Angle grinder with good heat dissipation performance

Publications (1)

Publication Number Publication Date
CN201030504Y true CN201030504Y (en) 2008-03-05

Family

ID=39162397

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2007201539382U Expired - Fee Related CN201030504Y (en) 2007-05-21 2007-05-21 Angle grinder with good heat dissipation performance

Country Status (1)

Country Link
CN (1) CN201030504Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103023192A (en) * 2012-11-22 2013-04-03 上海锐奇工具股份有限公司 Electric tool
CN105583710A (en) * 2015-12-28 2016-05-18 宁波鑫晟工具有限公司 Polishing machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103023192A (en) * 2012-11-22 2013-04-03 上海锐奇工具股份有限公司 Electric tool
CN105583710A (en) * 2015-12-28 2016-05-18 宁波鑫晟工具有限公司 Polishing machine
CN105583710B (en) * 2015-12-28 2018-01-16 宁波鑫晟工具有限公司 A kind of sanding machine

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080305