CN105234907A - Electric tool - Google Patents
Electric tool Download PDFInfo
- Publication number
- CN105234907A CN105234907A CN201510797514.9A CN201510797514A CN105234907A CN 105234907 A CN105234907 A CN 105234907A CN 201510797514 A CN201510797514 A CN 201510797514A CN 105234907 A CN105234907 A CN 105234907A
- Authority
- CN
- China
- Prior art keywords
- electromagnet
- air outlet
- electric tool
- seal sleeve
- motor
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/008—Cooling means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
The invention discloses an electric tool. The electric tool comprises a shell, an air outlet and a sealing sleeve, wherein a through hole is formed in the sealing sleeve; a projection block is arranged at the outer side of the sealing sleeve; and a chute for sliding the projection block is formed in the inner wall of the shell. The electric tool further comprises a return piece; an electromagnet is arranged at one end of the chute, and is linked with a motor, so that the electromagnet is electrified and magnetized when the motor is started; when the projection block is attracted by the electromagnet to butt against the electromagnet, the air outlet is communicated with the through hole in the sealing sleeve; and when the electromagnet loses the magnetism, the side wall of the sealing sleeve blocks the air outlet under the effect of the return piece. Compared with the prior art, a temperature sensor is arranged on the surface of the motor; the electric tool further comprises a control unit for controlling the electrification and the power failure of the electromagnet; the control unit is connected with the temperature sensor; and only when the internal temperature of the electric tool reaches the necessity of heat dissipation, the air outlet is opened, so that the effects of safety and practicability are achieved.
Description
Technical field
The invention belongs to field of power tools, particularly relate to a kind of electric tool.
Background technology
Electric tool, such as electric drill, electric hammer, percussion drill etc., its structure mainly comprises housing, is provided with motor in housing, and the outer wall that housing is positioned at motor position sets out air port.Air outlet is mainly used in electric tool heat in use to distribute, and causes damage to prevent motor overheating.
But said structure also exists certain problem, owing to having air outlet, the dust therefore in environment enters enclosure interior easily via air outlet.Dust easily causes harmful effect to the serviceability of electric tool when enclosure interior accumulation is too much, and greatly can reduce the service life of electric tool.
Be " 201520370934.4 " to this number of patent application, name is called the structure disclosing a kind of electric tool in the utility model patent of " electric tool ", it comprises housing, is positioned at the motor of housing rear end and is positioned at the air outlet that the outer wall of motor position is arranged at housing, after electric tool, end housing is provided with opening, rotate in described opening and seal sleeve is set, described seal sleeve is provided with air outlet quantity and position to the through hole mated.In use, rotary seal sleeve makes air outlet be in opening to above-mentioned electric tool, now can proper heat reduction; When being in unused state, rotary seal sleeve makes air outlet be in closed condition, and now dust will be difficult to enter electric tool inside.
Although said structure solves electric tool dust when not using and easily enters inner problem, but it is existing defects still: 1) because this electric tool adds extra operating procedure, namely need the rotary seal sleeve when non-usage that air outlet is closed, and rotary seal sleeve makes air outlet be opened in use, what operating procedure was become is more loaded down with trivial details, is unfavorable for its promotion and implementation.2) operating personnel easily forget and open seal sleeve thus heat in electric tool use procedure cannot be shed in time, cause electric tool to damage.
Based on the problems referred to above, the applicant devises a kind of structure of electric tool, see Fig. 1, comprise housing 1, be positioned at the motor 2 of housing 1 rear end and be positioned at the air outlet 3 that the outer wall of motor position is arranged at described housing 1, be positioned at described air outlet 3 position in described housing 1 inside and seal sleeve 4 is set, described seal sleeve 4 is provided with the through hole 40 with air outlet quantity and location matches, a protruding block 41 is had in described seal sleeve 4 arranged outside, the chute 10 slided for described protruding block 41 is provided with at described housing 1 inwall, also comprise a return unit 42, described return unit 42 makes described seal sleeve have the trend of reverse rotation, described chute 10 one end is provided with electromagnet 43, described electromagnet 43 and described motor 2 link (namely electromagnet 43 is connected in the supply line 100 of motor 2) with make described motor 2 when starting described electromagnet 43 must electric must magnetic, described protruding block 41 is the material that can be attracted by electromagnet, when described protruding block 41 is attracted to make it by described electromagnet 43 and described electromagnet leans, described air outlet 3 is communicated with the through hole 40 on described seal sleeve 4, when described electromagnet 43 loss of excitation, described seal sleeve 4 rotates and makes its sidewall block described air outlet 3 under the effect of return unit.
Said structure makes electric tool only just open air outlet for heat radiation when starting, but in use find its still existing problems, if electric tool only starts a bit of time and just cuts out, its motor temperature is not very high, does not need necessity of heat radiation; In addition, when each two states starting electric tool and closedown electric tool frequently switches, seal sleeve change rotation repeatedly resets, and makes return unit easily produce mechanical fatigue.The problems referred to above, urgently to be resolved hurrily.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of electric tool.
The present invention is achieved through the following technical solutions: electric tool, comprise housing, be positioned at the motor of housing rear end and be positioned at the air outlet that the outer wall of motor position is arranged at described housing, be positioned at described air outlet position in described enclosure interior and seal sleeve is set, described seal sleeve is provided with the through hole with air outlet quantity and location matches, a protruding block is had in described seal sleeve arranged outside, the chute slided for described protruding block is provided with in described inner walls, also comprise a return unit, described return unit makes described seal sleeve have the trend of reverse rotation, described chute one end is provided with electromagnet, described electromagnet and described motor linkage obtain electric magnetic to make described motor described electromagnet when starting, described protruding block is the material that can be attracted by electromagnet, when described protruding block is attracted to make it by described electromagnet and described electromagnet leans, described air outlet is communicated with the through hole on described seal sleeve, when described electromagnet loss of excitation, described seal sleeve rotates and makes its sidewall block described air outlet under the effect of return unit, the surface of described motor is provided with temperature sensor, also comprise the control unit for controlling described magnet switching electricity, described control unit is connected with described temperature sensor.
In technique scheme, described return unit is a spring being arranged in described chute, and described spring one end connects described chute bottom, and the described spring other end connects described protruding block.
In technique scheme, described return unit is be arranged on torsion spring or the wind spring that described seal sleeve is rotationally connected place.
The present invention has following beneficial effect: electric tool of the present invention when not using, air outlet close by seal sleeve sidewall, can not enter to make dust; When starting electric tool, first temperature sensor detects motor temperature, and said temperature signal is sent to control unit, there is a temperature preset value in control unit, if detect, the temperature of motor just controls electromagnet higher than control unit during this temperature preset value and obtains electric, and protruding block is attracted to by electromagnet and leans position with electromagnet, now through hole is communicated with air outlet, the heat radiation of motor can be realized easily, safe and practical.
Accompanying drawing explanation
Fig. 1 is the structural representation in background technology.
Fig. 2 is structural representation of the present invention.
Fig. 3 is the cross-sectional schematic along A-A place in Fig. 1.
Fig. 4 be seal sleeve with housing coordinate schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail.
Embodiment 1: see Fig. 2 to Fig. 3, electric tool, comprise housing 1, be positioned at the motor 2 of housing 1 rear end and be positioned at the air outlet 3 that the outer wall of motor position is arranged at described housing 1, be positioned at described air outlet 3 position in described housing 1 inside and seal sleeve 4 is set, described seal sleeve 4 is provided with the through hole 40 with air outlet quantity and location matches.
A protruding block 41 is had in described seal sleeve 4 arranged outside, the chute 10 slided for described protruding block 41 is provided with at described housing 1 inwall, described chute 10 one end is provided with electromagnet 43, also comprise a return unit 42, it (is reverse with the direction of arrow in accompanying drawing 2 that described return unit 42 makes described seal sleeve 4 have the trend of reverse rotation, also namely with away from described electromagnet direction for direction), described return unit 42 is a spring being arranged in described chute 10, described spring one end connects described chute 10 bottom, the described spring other end connects described protruding block 41.
Described electromagnet 43 links with described motor 2, namely electromagnet 43 is connected in the supply line 100 of motor 2, with make to electromagnet 43 described during feeding electric motors simultaneously electric, make described motor 2 described electromagnet 43 when starting electricly must obtain magnetic, described protruding block 41 is the material that can be attracted by electromagnet, when described protruding block 41 is attracted to make it by described electromagnet 43 and described electromagnet leans, described air outlet 3 is communicated with the through hole 40 on described seal sleeve 4, when described electromagnet 43 loss of excitation, described seal sleeve 4 rotates and makes its sidewall block described air outlet 3 under the effect of return unit.
The surface of described motor 2 is provided with temperature sensor 300, and also comprise the control unit 200 for controlling described magnet switching electricity, described control unit 200 is connected with described temperature sensor 300.When starting electric tool, first temperature sensor 300 detects motor temperature, and said temperature signal is sent to control unit 200, in control unit, 200 have a temperature preset value, if detect, the temperature of motor just controls electromagnet higher than control unit during this temperature preset value and obtains electric, even if therefore electric tool just cut out in the startup a bit of time, or frequently when the two states starting electric tool and closedown electric tool switches, as long as the temperature that temperature sensor detects does not exceed preset value, air outlet all can not be opened.
Embodiment 2: see Fig. 3 and Fig. 4, in embodiment 2, described return unit 42 is rotationally connected the torsion spring w at place for being arranged on described seal sleeve 4, wherein torsion spring also can with wind spring replace with the trend making seal sleeve have reverse rotation, embodiment 2 all the other with embodiment 1.
That more than enumerates is only specific embodiments of the invention, obviously, the invention is not restricted to above embodiment.All distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate, all should belong to protection scope of the present invention.
Claims (3)
1. an electric tool, comprise housing (1), be positioned at the motor (2) of housing (1) rear end and be positioned at the air outlet (3) that the outer wall of motor position is arranged at described housing (1), be positioned at described air outlet (3) position in described housing (1) inside and seal sleeve (4) is set, described seal sleeve (4) is provided with the through hole (40) with air outlet quantity and location matches, a protruding block (41) is had in described seal sleeve (4) arranged outside, the chute (10) slided for described protruding block (41) is provided with at described housing (1) inwall, also comprise a return unit (42), described return unit (42) makes described seal sleeve have the trend of reverse rotation, described chute (10) one end is provided with electromagnet (43), described electromagnet (43) and described motor (2) link to make described motor (2) described electromagnet (43) when starting electricly must obtain magnetic, described protruding block (41) is the material that can be attracted by electromagnet, when described protruding block (41) by described electromagnet (43) attract make it and described electromagnet leans time, described air outlet (3) is communicated with the through hole (40) on described seal sleeve (4), when described electromagnet (43) loss of excitation, described seal sleeve (4) rotates and makes its sidewall block described air outlet (3) under the effect of return unit, it is characterized in that: the surface of described motor (2) is provided with temperature sensor (300), also comprise the control unit (200) for controlling described magnet switching electricity, described control unit (200) is connected with described temperature sensor (300).
2. a kind of electric tool as claimed in claim 1, it is characterized in that: described return unit (42) is a spring being arranged in described chute (10), described spring one end connects described chute (10) bottom, and the described spring other end connects described protruding block (41).
3. a kind of electric tool as claimed in claim 1, is characterized in that: described return unit (42) is rotationally connected torsion spring or the wind spring at place for being arranged on described seal sleeve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510797514.9A CN105234907A (en) | 2015-11-18 | 2015-11-18 | Electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510797514.9A CN105234907A (en) | 2015-11-18 | 2015-11-18 | Electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105234907A true CN105234907A (en) | 2016-01-13 |
Family
ID=55032852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510797514.9A Pending CN105234907A (en) | 2015-11-18 | 2015-11-18 | Electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105234907A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108326790A (en) * | 2018-02-21 | 2018-07-27 | 单杰 | Electric tool |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002018745A (en) * | 2000-06-29 | 2002-01-22 | Makita Corp | Power tool |
| JP2006142399A (en) * | 2004-11-16 | 2006-06-08 | Hitachi Koki Co Ltd | Combustion type power tool |
| JP2006278032A (en) * | 2005-03-28 | 2006-10-12 | Matsushita Electric Works Ltd | Charging device and charging type power tool set |
| CN101230993A (en) * | 2008-02-04 | 2008-07-30 | 美的集团有限公司 | Insect-proof induction cooker |
| CN102046335A (en) * | 2008-05-29 | 2011-05-04 | 日立工机株式会社 | Electric power tool |
| CN204686831U (en) * | 2014-10-15 | 2015-10-07 | 宁波耀升工具实业有限公司 | Electric tool |
-
2015
- 2015-11-18 CN CN201510797514.9A patent/CN105234907A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002018745A (en) * | 2000-06-29 | 2002-01-22 | Makita Corp | Power tool |
| JP2006142399A (en) * | 2004-11-16 | 2006-06-08 | Hitachi Koki Co Ltd | Combustion type power tool |
| JP2006278032A (en) * | 2005-03-28 | 2006-10-12 | Matsushita Electric Works Ltd | Charging device and charging type power tool set |
| CN101230993A (en) * | 2008-02-04 | 2008-07-30 | 美的集团有限公司 | Insect-proof induction cooker |
| CN102046335A (en) * | 2008-05-29 | 2011-05-04 | 日立工机株式会社 | Electric power tool |
| CN204686831U (en) * | 2014-10-15 | 2015-10-07 | 宁波耀升工具实业有限公司 | Electric tool |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108326790A (en) * | 2018-02-21 | 2018-07-27 | 单杰 | Electric tool |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160113 |
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| RJ01 | Rejection of invention patent application after publication |