CN204118963U - Airflow guiding device and comprise the electric tool of airflow guiding device - Google Patents

Abstract

The utility model discloses a kind of airflow guiding device, the guiding parts that described airflow guiding device comprises windage parts and is connected with windage parts.These windage parts are suitable for being installed on the housing of electric tool, and these windage parts to be positioned on this housing above at least one air outlet after mounting.The air-flow that windage member obstruction is sprayed by described air outlet.Guiding parts has geometry to be directed to specific direction by by the air-flow sprayed by described air outlet of windage member obstruction.The invention also discloses the electric tool comprising airflow guiding device.Originally the hot blast that the fan upwards flowed is discharged can be intercepted by above-mentioned airflow guiding device.Further, the hot blast be blocked can be discharged to another direction by the guiding parts in airflow guiding device, such as horizontal forward direction.So, the hot blast that fan is produced by boasting can not directly blow to user on the face, causes the happiness in user's use procedure.

Description

Airflow guiding device and comprise the electric tool of airflow guiding device

Technical field

The utility model relates to a kind of electric tool, and particularly a kind of internal configurations has fan to carry out the electric tool of active heat removal to the motor of running.

Background technology

Electric tool used in the art possesses motor and working portion that is coupled and that driven by it usually.Different electric tools is by the difference of the difference of inner transmission mechanism and the working portion of configuration, the rotary driving force that motor exports can be converted to dissimilar power, the piston movement etc. of the High Rotation Speed of such as circular saw blade, the reciprocal impact of electric hammer, ail gun.Because motor and transmission mechanism thereof are arranged on electric tool, a large amount of heats is easily produced when motor runs up, if and these heats are not discharged to outside in time will cause damage to motor or other parts such as reciprocating mechanism etc., or reduce their useful life.

But; in the electric tool being configured with fan; the problem that often there will be is that the wind-force that fan manufactures is too powerful, and is merely able to the horizontal side face configuration along shell due to the air outlet of the fan configured on electric tool, therefore the fan hot blast often vertical upflow of producing by boasting.Therefore these hot blasts can directly blow to user on the face, cause uncomfortable sensation.Further, in some electric tool is such as vertically sawed, such wind direction also may cause a part of sawdust produced in sawing process also to be blown toward direction upwards, likely can touch user's head and cause discomfort.

Utility model content

Therefore, embodiment of the present utility model provides a kind of airflow guiding device, the housing that can be installed to electric tool is positioned at the position of fan outlet outside, thus reduces or eliminates the upwards flowing of the hot blast of being discharged by fan.

In one aspect, according to a kind of airflow guiding device for electric tool in the utility model, the guiding parts comprising windage parts and be connected with windage parts.These windage parts are suitable for being installed on the housing of electric tool, and these windage parts to be positioned on this housing above at least one air outlet after mounting.The air-flow that windage member obstruction is sprayed by described air outlet.Guiding parts has geometry to be directed to specific direction by by the air-flow sprayed by described air outlet of windage member obstruction.

Preferably, windage parts have circular profile, and it is suitable for being installed to the housing of described electric tool and surrounds the section girth of this housing at least in part.

More preferably, guiding parts be connected to described windage parts towards in the forward edge of electric tool front end.

In one embodiment, the described geometry of guiding parts is the gas channel that sidewall is formed.This gas channel is parallel to the length direction of electric tool.

In another embodiment, the geometry of guiding parts is the gas channel that sidewall is formed.Sidewall is downward-sloping, is an oblique angle with the length direction of electric tool.

In another embodiment, the geometry of guiding parts is the gas channel that multiple sidewall is formed.This gas channel has closed shape.

Preferably, the multiple sidewalls forming described gas channel are not parallel each other.

In another embodiment, guiding parts has forward direction end face, and this forward direction end face is suitable for the corresponding backward edge of fitting on described electric tool.

On the other hand, the invention also discloses a kind of electric tool, comprise working head, housing, the fan that is contained in the motor in housing and is contained in housing.This electric tool also comprises above-mentioned airflow guiding device.

In one embodiment, electric tool is jigsaw machine.

Airflow guiding device in the utility model possesses many advantages due to above-mentioned feature.Wherein, maximum advantage is just in the electric tool being configured with fan, the hot blast that the fan originally upwards flowed is discharged can be intercepted by above-mentioned airflow guiding device.Further, the hot blast be blocked can be discharged to another direction by the guiding parts in airflow guiding device, such as horizontal forward direction.So, the hot blast that fan is produced by boasting can not directly blow to user on the face, causes the happiness in user's use procedure.Further, a part of sawdust produced in sawing process also can not be blown toward direction upwards, and like this would not touch user's head causes discomfort.

Accompanying drawing explanation

Can do further to understand to performance of the present utility model and advantage with reference to the remaining part of this specification and accompanying drawing; In these accompanying drawings, the label of same assembly is identical.In some cases, son mark is placed in after certain label and hyphen to represent one of them of many similar component.When mentioning certain label but do not write some existing son marks especially exactly, just refer to all these similar assemblies.

Fig. 1 illustrates the decomposing state schematic diagram of electric tool according to first embodiment of the present utility model and airflow guiding device thereof.

Fig. 2 illustrates the rear view stereo figure of the electric tool in Fig. 1.

Fig. 3 illustrates the front view stereo figure of the airflow guiding device in Fig. 1.

Fig. 4 illustrates the electric tool in Fig. 1 and the schematic diagram after airflow guiding device combination thereof.

Fig. 5 illustrates the stereogram of the airflow guiding device according to another embodiment of the present utility model.

Fig. 6 illustrates the stereogram of the airflow guiding device according to another embodiment of the present utility model.

Fig. 7 illustrates the stereogram of the airflow guiding device according to another embodiment of the present utility model.

Embodiment

Embodiment of the present utility model employs the simple and easy windage of structure and guiding parts to the obstruct of the wind-force that realizes subtend flows and be redirected.Can other different benefit of providing of apparent each embodiment of the present utility model and advantage from following describing.

Shown is in FIG electric tool according to first embodiment of the present utility model and airflow guiding device thereof.Shown here electric tool is a kind of jigsaw machine, it has structure well-known to those skilled in the art, comprises fuselage 38, is connected on fuselage 38 and mentions the handle 36 of this jigsaw machine and the not shown working head part (comprising the parts such as saw blade) being positioned at fuselage 38 front end for user.Fuselage 38 inside contains the necessary parts of the function realizing jigsaw machine, comprises motor, transmission mechanism, fan etc. for motor radiating, all not shown here.Especially, as shown in the figure in the position near fuselage 38 front end, multiple fan outlet 31 is had.These air outlets 31 generally along the circumferential directions of the cross section of fuselage 38, therefore form the air outlet array of a transverse direction around fuselage 38 outside.When not installing the airflow guiding device in the utility model, the air with heat of being discharged by air outlet 31 can upwards flow at least partially, namely along the direction of arrow in Fig. 1 20.The reason part that such airflow direction causes is because its proportion gentlier trends towards upwards flowing because of hot-air itself.

On the other hand, the airflow guiding device shown in Fig. 1 comprises windage parts 22 and guiding parts 26.Windage parts 22 have the profile of ring-type, although it is not a complete totally enclosed annular.These windage parts 22 are suitable for being installed on the fuselage 38 of above-mentioned electric tool, and windage parts can be positioned on this housing above at least one air outlet.On the inner surface of windage parts 22, have one or more irregular geometrical pattern 24, such irregular pattern more effectively can upset the upwards flowing of the hot blast that air outlet 31 is discharged.In addition, in the forward edge of windage parts 22, be connected to above-mentioned guiding parts 26.Forward direction mentioned here refers to the direction towards electric tool front end, as shown in arrow in Fig. 1 34.In the inside of guiding parts 26, there is specific geometry, the air-flow that air outlet sprays can be directed to specific direction.As shown in Figure 1, in the inside of guiding parts 26, there are multiple sidewalls 30,32 etc.These sidewalls 30,32 etc. form the shape closed, and such shape just forms multiple gas channel at guiding parts 26.These sidewall 30,32 parts are formed by the main casing of guiding parts 26, and another part is formed by the fin 33 connected between main casing two ends.As shown in Figure 1, multiple sidewall 30,32 is not parallel each other.

Next, see Fig. 2 and Fig. 3, also have forward direction end face 35 in the previous section of guiding parts 26, such forward direction end face 35 has certain width, is formed by the thickness of guiding parts 26.Here said forward direction is namely towards the direction of electric tool front end, and above-mentioned forward direction is equivalent in meaning.The forward direction end face 35 of guiding parts 26 is the backward edges 37 in order to relevant position on electric tool of fitting.If do not closed at so backward edge 37, the stop and again becoming that the air-flow of the horizontal direction of so being discharged from guiding parts 26 is still likely subject to vertical backward edge 37 is upwards flowed.Therefore, the guiding parts 26 with forward direction end face 35 can realize the effect that air-flow is redirected better.

Shown in Fig. 4 is schematic diagram after electric tool in Fig. 1 and airflow guiding device combination thereof, and now airflow guiding device is installed to the housing of described electric tool and surrounds the section girth of this housing at least in part as seen.In use, the hot blast of being discharged by air outlet (not shown in Fig. 4) is first stopped by windage parts 22, because windage parts 22 are just in time positioned at the top of air outlet, and the inner surface of windage parts 22 will stop the upwards flowing of hot blast.Then, the hot blast be blocked is when can not upwards flow by flow forward, and this will cause them by guiding parts 26.When hot blast through in guiding parts 26 gas channel 28 time, just by the direction flow forward along general horizontal, thus upwards can not flow and have influence on the face of user.

Shown in Fig. 5 is airflow guiding device according to another embodiment in the utility model, and wherein windage parts 122 are substantially identical with the windage parts in Fig. 1, repeat no more here.But the guiding parts be connected with windage parts 122 comprises the first prerotation vane 125, second prerotation vane 127 here and is connected the first prerotation vane 125 connection ridge 129 also vertical with it with the second prerotation vane 127.As shown in Figure 5, the first prerotation vane 125 and the second prerotation vane 127 substantially parallel, but be not in and agree in plane, therefore between the first prerotation vane 125 and the second prerotation vane 127, define gas channel 128.This gas channel 128 can allow hot blast pass through and lead to it.

Shown in Fig. 6 is airflow guiding device according to another embodiment in the utility model, and wherein windage parts 222 are substantially identical with the windage parts in Fig. 1, repeat no more here.But guiding parts 226 inside be connected with windage parts 122 does not limit close-shaped gas channel.On the contrary, gas channel is here half opening, and only some is that the sidewall defined by fin 230 limits for it.It should be noted that here fin 230 is not the length direction (as shown in arrow in Fig. 1 34) being parallel to electric tool, but downward-sloping slightly forward, be an oblique angle with the length direction of electric tool.That is, air-flow can be directed to slightly forward flowing underneath when the gas channel limited by fin 230.The trend that the flowing of slightly forward below like this can avoid air-flow to move upward more effectively.

Shown in Fig. 7 is airflow guiding device according to another embodiment in the utility model, and wherein windage parts 322 are substantially identical with the windage parts in Fig. 6, repeat no more here.But the quantity of the fin 230 that the guiding parts 326 be connected with windage parts 322 has compared with the guiding parts in Fig. 6 is less.

Therefore, after describing several embodiment, those skilled in the art will recognize that different changes, other structure, equivalent, can be used without and can deviate from essence of the present utility model.Accordingly, above description should not be regarded as the restriction to the determined the utility model scope of such as following claim.

Such as, the windage parts in the above embodiments in airflow guiding device itself are not closed annulars, and just extend along most of annular perimeter.But, those skilled in the art will recognize that in other embodiments, also can be complete circular profile by the windage part design in airflow guiding device, the section girth of this housing after like this airflow guiding device is installed to the housing of described electric tool, will be surrounded completely.Such design can be the object in order to permanent installation, and such as when dispatching from the factory, airflow guiding device is assembled without the need to user oneself with regard to being installed on electric tool.

Claims (10)

1. for an airflow guiding device for electric tool, it is characterized in that, comprising:

(a) windage parts, these windage parts are suitable for being installed on the housing of electric tool, and these windage parts to be positioned on this housing above at least one air outlet after mounting; The air-flow that this windage member obstruction is sprayed by described air outlet;

B guiding parts that () is connected with windage parts, this guiding parts has geometry to be directed to specific direction by by the air-flow sprayed by described air outlet of windage member obstruction.

2. airflow guiding device as claimed in claim 1, it is characterized in that, described windage parts have circular profile, and described windage parts are suitable for being installed to the housing of described electric tool and surround the section girth of this housing at least in part.

3. airflow guiding device as claimed in claim 2, is characterized in that, guiding parts be connected to described windage parts towards in the forward edge of described electric tool front end.

4. airflow guiding device as claimed in claim 3, is characterized in that, the described geometry of guiding parts is the gas channel that sidewall is formed; This gas channel is parallel to the length direction of described electric tool.

5. airflow guiding device as claimed in claim 3, is characterized in that, the described geometry of guiding parts is the gas channel that sidewall is formed; Described sidewall is downward-sloping, is an oblique angle with the length direction of described electric tool.

6. airflow guiding device as claimed in claim 3, is characterized in that, the described geometry of guiding parts is the gas channel that multiple sidewall is formed; Described gas channel has closed shape.

7. airflow guiding device as claimed in claim 6, it is characterized in that, the described multiple sidewall forming described gas channel is not parallel each other.

8. airflow guiding device as claimed in claim 3, it is characterized in that, described guiding parts has forward direction end face, and this forward direction end face is suitable for the corresponding backward edge of fitting on described electric tool.

9. an electric tool, comprise working head, housing, the fan that is contained in the motor in housing and is contained in housing, it is characterized in that, this electric tool also comprises as the airflow guiding device in claim 1-7 as described in any.

10. electric tool as claimed in claim 9, it is characterized in that, described electric tool is jigsaw machine.