CN201147918Y

CN201147918Y - Electric impact drill having superior heat dissipation performance

Info

Publication number: CN201147918Y
Application number: CNU2007201543706U
Authority: CN
Inventors: 徐振丰
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-05-21
Filing date: 2007-05-21
Publication date: 2008-11-12
Anticipated expiration: 2017-05-21

Abstract

The utility model provides an impact electric drill with excellent heat dispersion, which comprises a shell body and a motor arranged inside the shell body. The back end of the shell body is connected with a handgrip, and the front end of the shell body is provided with a motor-driven drill chuck. The shell body of the part corresponding to the motor consists of a plastic casing is arranged on both sides and the lower side of the motor and is connected with a handgrip, and a magnesium metallic casing. The metallic casing is a cambered splint. Step-like joints are arranged on both sides of the metallic casing, and a V-shaped groove is arranged on the rear side. The plastic casing is provided with grooves matched with the joints, and a lug boss matched with the V-shaped groove. The front end of the metallic casing is provided with a step-like flange. The front part of the casing is provided with a lock block matched with the flange. The impact electric drill is not only effective in heat elimination and high in operational efficiency, but also simple in structure and low in cost.

Description

A kind of electric impact drill of perfect heat-dissipating

Technical field:

The utility model relates to a kind of electric impact drill of perfect heat-dissipating.

Background technology:

At present, the electric impact drill that occurs on the market, its structure includes housing, be located at the motor in the housing, this housing rear end is connected with handle, front end is provided with by motor-driven drill chuck, wherein, with the corresponding that part of housing of motor be plastic part; Electric impact drill in use, motor runs up, can produce a large amount of heats, these caloric requirements are in time got rid of, damage in order to avoid motor Yin Wendu is too high, thereby the designer has louvre on the housing of motor both sides, but because this housing is a plastic part, and the thermal conductivity of plastics is very poor, make that whole radiating effect is unsatisfactory, motor still needed to stop after a bit of time of work, treated that it continues to use after lowering again, this certainly will seriously influence job schedule, simultaneously, also because of often being in the condition of high temperature, motor also will shorten its service life.

The utility model content:

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of electric impact drill of perfect heat-dissipating is provided, and it is good heat dissipation effect, high efficiency not only, and simple in structure, with low cost.

The electric impact drill of a kind of perfect heat-dissipating that provides according to the utility model, comprise housing, be located at the motor in the housing, this housing rear end is connected with handle, front end is provided with by described motor-driven drill chuck, form by plastic casing that is positioned at described motor both sides and downside and is connected and the metal shell that is positioned at described motor upside with the housing of the corresponding part of described motor with described handle, this metal shell is a curved thin plate, its both sides are equipped with stepped joint, rear side is provided with one " V " connected in star, described plastic casing is provided with the draw-in groove that matches with described joint, the projection that matches with described " V " connected in star, described metal shell front end is provided with a stepped flange, and described housing fore-end is provided with the briquetting that matches with described flange.

The electric impact drill of a kind of perfect heat-dissipating that provides according to the utility model also has following attached technical characterictic:

Described metal shell is a magnesian.

The electric impact drill of a kind of perfect heat-dissipating that provides according to the utility model, prior art has following advantage relatively:

First: in this structure, the motor upside is connected with a metal shell, because of the heat dispersion of metal perfect heat-dissipating more than plastics, the heat ratio that makes machine operation produce is easier to distribute, its heat-sinking capability improves than before greatly, thereby, can prolong the time of electric drill continuous operation and reduce because of overheated infringement to motor, thereby high efficiency not only, but also can increase service life of electric drill greatly.

Second: this structure only at upside clamping one metal shell of motor, just improved the electric drill heat-sinking capability greatly, thereby its result is simple, and is with low cost.

Description of drawings:

Introduce the utility model in detail below in conjunction with the drawings and specific embodiments.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the sectional structure schematic diagram of A-A among Fig. 1;

Fig. 3 is the local enlarged diagram at E place among Fig. 2;

Fig. 4 is the plan structure schematic diagram of metal shell in the utility model;

Fig. 5 is the sectional structure schematic diagram of metal shell in the utility model;

Fig. 6 is the local enlarged diagram at I place among Fig. 1.

The specific embodiment:

With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, a kind of electric impact drill with excellent heat dispersion performance according to the utility model provides comprises housing 1, is located at the motor 2 in the housing 1, and this housing 1 rear end is connected with handle 3, front end is provided with the drill chuck that is driven by motor 2, is made up of plastic casing 11 that is positioned at motor 2 both sides and downside and is connected with handle 3 and the metal shell 12 that is positioned at motor 2 upsides with the housing of motor 2 corresponding parts.

This metal shell 12 is a curved thin plate, its both sides and front end are equipped with stepped joint 21, rear side is provided with one " V " connected in star 22, plastic casing 11 is provided with the draw-in groove 31 that matches with described joint 21, the projection 32 that matches with " V " connected in star 22, metal shell 12 front ends are provided with a stepped flange 40, housing 1 fore-end is provided with the briquetting 41 that matches with described flange 40, guarantee that metal shell 12 firmly is connected with plastic casing 11 and housing 1 fore-end, be unlikely to come off.

Metal shell 12 is a magnesian, and magnesian is a kind of good heat conductivity and lightweight a kind of metal material, thereby its use can strengthen the radiating effect of electric drill to greatest extent, simultaneously, can not increase the weight of electric drill itself again.

The foregoing description is only for the usefulness that the utility model is described; and be not to restriction of the present utility model; the those of ordinary skill in relevant technologies field; under the situation that does not break away from spirit and scope of the present utility model; can also make various variations and modification; therefore all technical schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be limited by each claim.

Claims

1, a kind of electric impact drill of perfect heat-dissipating, comprise housing (1), be located at the motor (2) in the housing (1), this housing (1) rear end is connected with handle (3), front end is provided with the drill chuck that is driven by described motor (2), its characteristic is: be made up of plastic casing (11) that is positioned at described motor (2) both sides and downside and is connected with described handle (3) and the metal shell (12) that is positioned at described motor (2) upside with the housing of the corresponding part of described motor (2), this metal shell (12) is a curved thin plate, its both sides are equipped with stepped joint (21), rear side is provided with one " V " connected in star (22), described plastic casing (11) is provided with the draw-in groove (31) that matches with described joint (21), the projection (32) that matches with described " V " connected in star (22), described metal shell (12) front end is provided with a stepped flange (40), and described housing (1) fore-end is provided with the briquetting (41) that matches with described flange (40).

2, the electric impact drill of a kind of perfect heat-dissipating as claimed in claim 1 is characterized in that: described metal shell (12) is a magnesian.