CN209632946U - A kind of electric tool - Google Patents

Abstract

The utility model discloses a kind of electric tools, the electric tool includes casing, work head, air inlet and air intake passage, casing extends in a first direction and it is internally provided with power part, work head is set to the front end of the first direction of casing, air inlet is set on casing and for sucking cooling wind to cool down to power part, air intake passage is connected to air inlet, and air intake passage is configured as flowing into cooling wind in it from rear to preceding along first direction.Electric tool provided by the utility model is entered the wind along its casing from rear to preceding direction, when work head is used up, air intake passage it is opening down, the scrap etc. of whereabouts is not easy to be taken directly tool interior, the motor avoided in casing is worn by scrap, extends the service life of motor and entire electric tool.

Description

A kind of electric tool

Technical field

The utility model relates to machine tool technical field more particularly to a kind of electric tools.

Background technique

Electric tool, such as electric hammer generally include casing and the work head for being set to casing front end, are equipped with electricity in casing Machine and transmission parts, motor can drive work head movement to carry out stock removal action etc. by transmission parts.But motor and biography Dynamic component can generate heat at work.Particularly, for powerful work head, if the heat is not to be released in time, meeting Cause the damage of electrical components.Therefore, air inlet is usually provided on casing to cool down to electrical components.

Work head can generate scrap in cutwork on cutting face.But air inlet is usually along perpendicular to casing Extending direction setting, the air inlet of this structure type, when work head is crept into straight up, the scrap of generation can under It falls.It when scrap is fallen to around air inlet, can be inhaled into air inlet, and then wear the carbon brush of motor, influence making for electric hammer Use the service life.

Utility model content

The purpose of this utility model is that proposing a kind of electric tool for being not easy to suck scrap, the service life is longer.

For this purpose, the utility model uses following technical scheme:

A kind of electric tool, comprising:

Casing, extends in a first direction and it is internally provided with power part；

Work head is set to the front end of the first direction of the casing；

Air inlet is set on the casing, for sucking cooling wind to cool down to the power part；And

Air intake passage is connected to the air inlet, and the air intake passage is configured as making cooling wind along the first party Xiang Conghou is flowed into the air intake passage to preceding.

In one embodiment, the air guide member is detachably connected with the casing.

In one embodiment, the electric tool further include: air guide member is set on the casing, the air inlet Channel is set on the air guide member.

In one embodiment, it is provided at least one in the end of the rear end of the casing, upside and the left and right sides The air inlet is provided with the air intake passage corresponding with each air inlet on the air guide member.

In one embodiment, the air guide member is made of rubber or plastic material.

In one embodiment, the air intake passage is integrally formed on the housing.

In one embodiment, the air intake passage successively includes: along the direction that air-flow flows

First passage is configured as making cooling wind along the first direction from rear to preceding flowing；And

Second channel connects the first passage and the air inlet, the second channel and the first passage angulation Degree setting.

In one embodiment, the first passage includes sequentially connected lateral wall, upper side wall, inner sidewall and downside Wall, along the first direction, the rear end of the lateral wall is located between the front-end and back-end of the inner sidewall.

In one embodiment, the air intake passage is located on the outside of the air inlet, the rear end face of the air intake passage For the scarf relative to the first direction.

In one embodiment, the electric tool is electric hammer.

The beneficial effects of the utility model are as follows:

Electric tool provided by the utility model is entered the wind along its casing from rear to preceding direction, when work head is used up When, air intake passage it is opening down, the scrap etc. of whereabouts is not easy to be taken directly tool interior, avoids the motor quilt in casing Scrap abrasion, extends the service life of motor and entire electric tool；Furthermore when air intake passage is set on air guide member, also Directly air guide member can be installed on ready-made electric tool and be used, without carrying out structure improvement to ready-made electric tool.

Detailed description of the invention

Fig. 1 is the axonometric drawing for the electric hammer that specific embodiment of the present invention provides；

Fig. 2 is the main view for the electric hammer that specific embodiment of the present invention provides；

Fig. 3 is that the electric hammer that specific embodiment of the present invention provides removes one of the structural schematic diagram after air guide member；

Fig. 4 is that the electric hammer that specific embodiment of the present invention provides removes the second structural representation after air guide member；

Fig. 5 is one of the axonometric drawing of air guide member that specific embodiment of the present invention provides；

Fig. 6 is the two of the axonometric drawing for the air guide member that specific embodiment of the present invention provides；

Fig. 7 is the main view of Fig. 6；

Fig. 8 be along Fig. 7 A-A to sectional view；

Fig. 9 is a kind of structural schematic diagram for air intake passage that specific embodiment of the present invention provides.

Appended drawing reference:

10, casing；20, handle；30, work head；40, air guide member；

11, air inlet；41, air intake passage；

411, rear end face；412, the front end of air intake passage；413, first passage；414, second channel；4131, first passage Lateral wall；4132, the upper side wall of first passage；4133, the inner sidewall of first passage；4134, the lower wall of first passage.

Specific embodiment

Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.

The utility model provides a kind of electric tool, the electric tool can with but be not limited to electric hammer and be also possible to other The electric drill of type, present embodiment are introduced so that electric tool is electric hammer as an example.

As depicted in figs. 1 and 2, electric hammer includes casing 10, handle 20 and work head 30 (i.e. drill bit).It is equipped in casing 10 Motor and transmission parts (not shown), motor can drive work head 30 to carry out stock removal action, handle by transmission parts 20 connect with casing 10, so that user is hand-held.Casing 10 upwardly extends (arrow P in Fig. 1 in the first party perpendicular with handle 20 What is indicated is first direction), the rotation axis of motor also extends in a first direction.Work head 30 is arranged along the rotation axis In the front end of casing 10.Preferably, the rotation axis of work head 30 and the rotation axis of motor are conllinear, to reduce the vibration of electric hammer It is dynamic.When work, the rotation axis alignment work face of work head 30, user applies pressure on the direction of rotation axis, so that work Make first 30 pairs of working faces generation and compress power, to pierce working face.

To improve the cooling effect inside casing 10, the radiating mode of axial-flow type is preferably.Referring to Fig. 1, to make to cool down Wind can be flowed along the rotation axis direction of motor, and air inlet 11 is generally disposed at the rear end of casing 10.And to improve intake, In the end, the left and right sides, upside of 10 rear end of casing, this several places property of can choose is equipped with air inlet 11, the air inlet of everywhere The particular number of mouth 11 and distribution can be specifically arranged according to power of work head 30 etc..Air inlet 11 can be along the rotation with motor The vertical or parallel direction of axis extends.

Referring to Fig.1, be provided with air guide member 40 outside the air inlet 11 of the electric hammer of the utility model, with change electric tool into Wind direction, to prevent or reduce the scrap sucked in the electric tool course of work.Shown in as shown in Figure 1, Figure 3 and Figure 4, air guide member 40 Top and two sides be provided with air intake passage 41 corresponding with each air inlet 11, optionally, the top of air guide member 40 is set It is equipped with the air intake passage 41 being connected to the air inlet 11 of the end of 10 rear end of casing and upside, the left and right sides of air guide member 40 is all provided with It is equipped with the air intake passage 41 being connected to the air inlet 11 of the left and right sides of 10 rear end of casing, air intake passage 41 is configured as making air-flow It is flowed into it along electric machine rotational axis line direction (i.e. along first direction) from rear to preceding.What arrow M was indicated in Fig. 1 is to be provided with wind-guiding The air inlet direction of electric hammer after part 40, arrow M is consistent with the direction that arrow P is indicated, arrow N and the P instruction in Fig. 3 and Fig. 4 It is the air inlet direction of electric hammer after removing air guide member 40.

Air intake passage 41 flows into air-flow in it from rear to preceding along electric machine rotational axis line direction, when work head 30 is used up When, air intake passage 41 it is opening down, the scrap etc. of whereabouts is not easy to be taken directly inside casing 10, avoids the components such as motor It is worn, extends the service life of motor and entire electric tool.And air guide member 40 directly can be installed on ready-made electric drill Upper use, without carrying out structure improvement to ready-made electric drill.

Fig. 5 to Fig. 8 is please referred to, the air intake passage being connected with the air inlet 11 of the upside of 10 rear end of casing and end 41 are located at 11 outside of air inlet, and the rear end of air intake passage 41 is air intake, front end 412 is closed end.In order in anti-scrap Simultaneously convenient for air inlet, the rear end face 411 of air intake passage 41 is the scarf relative to first direction.

Please continue to refer to shown in Fig. 5, Fig. 6 and Fig. 9, what the arrow in Fig. 9 indicated is the flow direction of cooling wind, with casing The air intake passage 41 that the air inlet 11 of 10 left and right sides is connected successively includes interconnected along the direction that air-flow flows One channel 413 and second channel 414, first passage 413 are configured as making cooling wind along the first direction from rear to preceding flowing, Second channel 414 connects first passage 413 and air inlet 11, second channel 414 and the angled setting of first passage 413.This reality It applies in mode, the angle between second channel 414 and first passage 413 is 180 degree, and the cooling wind in first passage 413 needs to turn Enter second channel 414 after curved, dust-proof effect can be improved.In other embodiments, first passage 413 and second channel 414 Between angle be also possible to any angle between 0 degree -180 degree, but between preferably 90 degree -180 degree.Optionally, such as Fig. 6 institute Showing, first passage 413 includes sequentially connected lateral wall 4131, upper side wall 4132, inner sidewall 4133 and lower wall 4134, wherein The inner sidewall 4133 of first passage 413 is also the lateral wall of second channel 414, along first direction, the lateral wall of first passage 413 Between the front-end and back-end of 4131 rear end wall 4133 on its inside, in favor of air inlet.

It should be noted that the air intake passage 41 of each position optionally takes above-mentioned in other embodiments A kind of structure type of air intake passage 41.

Air guide member 40 is detachably connected with casing 10, in order to replacement, the cleaning etc. of air guide member 40.Air guide member 40 can with but It is not limited to be made of flexible rubber material.Rubber can be tightly fastened on casing 10 by the elasticity of its own. Air guide member 40 can also be made of plastic material.In other embodiments, one in air guide member 40 and casing 10 can be passed through Card convex is set on person, air guide member 40 is connected on casing 10 by the mode of another one setting card slot；It can also will be led by screw Wind part 40 is fixed on casing 10.

It is understood that the position of air inlet 11 and quantity are not limited to above-mentioned feelings in present embodiment Condition can be configured according to specific needs, and the position of air intake passage 41 is specifically set according to the position of air inlet 11.

It should be noted that may not be will be entered the wind by the setting this form of air guide member 40 in other embodiments Channel 41 is set on casing 10, but when producing casing 10, above-mentioned air intake passage 41 is directly integrally formed on casing 10. It is directly formed on casing 10 in the embodiment of air intake passage 41, the knot that position, air intake passage 41 are set of air intake passage 41 Structure etc. is referred to present embodiment and is configured, and details are not described herein.

Technical principle of the utility model has been described above with reference to specific embodiments.These descriptions are intended merely to explain this reality With novel principle, and it cannot be construed to the limitation to scope of protection of the utility model in any way.Based on the explanation herein, Those skilled in the art, which does not need to pay for creative labor, can associate with other specific implementation modes of this utility model, These modes are fallen within the protection scope of the utility model.

Claims (10)

1. a kind of electric tool characterized by comprising

Casing, extends in a first direction and it is internally provided with power part；

Work head is set to the front end of the first direction of the casing；

Air inlet is set on the casing, for sucking cooling wind to cool down to the power part；And

Air intake passage is connected to the air inlet, the air intake passage be configured as making cooling wind along the first direction from It is flowed into the air intake passage to preceding afterwards.

2. electric tool according to claim 1, which is characterized in that

The air intake passage is integrally formed on the housing.

3. electric tool according to claim 1, which is characterized in that the electric tool further include:

Air guide member is set on the casing, and the air intake passage is set on the air guide member.

4. electric tool according to claim 3, which is characterized in that end, upside and the left and right of the rear end of the casing In two sides at least one at be provided with the air inlet, institute corresponding with each air inlet is provided on the air guide member State air intake passage.

5. electric tool according to claim 3, which is characterized in that

The air guide member is detachably connected with the casing.

6. electric tool according to claim 3, which is characterized in that

The air guide member is made of rubber or plastic material.

7. electric tool according to any one of claims 1 to 6, which is characterized in that

The air intake passage successively includes: along the direction that air-flow flows

First passage is configured as making cooling wind along the first direction from rear to preceding flowing；And

Second channel, connects the first passage and the air inlet, and the second channel is at an angle of with the first passage and sets It sets.

8. electric tool according to claim 7, which is characterized in that

The first passage includes sequentially connected lateral wall, upper side wall, inner sidewall and lower wall, along the first direction, institute The rear end for stating lateral wall is located between the front-end and back-end of the inner sidewall.

9. electric tool according to any one of claims 1 to 6, which is characterized in that

The air intake passage is located on the outside of the air inlet, and the rear end face of the air intake passage is relative to the first direction Scarf.

10. electric tool according to any one of claims 1 to 6, which is characterized in that the electric tool is electric hammer.