CN1503434A - Tools motor with interference elimination by toroidal iron-core choke coil - Google Patents
Tools motor with interference elimination by toroidal iron-core choke coil Download PDFInfo
- Publication number
- CN1503434A CN1503434A CNA021453993A CN02145399A CN1503434A CN 1503434 A CN1503434 A CN 1503434A CN A021453993 A CNA021453993 A CN A021453993A CN 02145399 A CN02145399 A CN 02145399A CN 1503434 A CN1503434 A CN 1503434A
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- China
- Prior art keywords
- choke
- disturbs
- annular core
- disappears
- shell
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- 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.)
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- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
A tool motor with ring iron-core choke denoise relates to power tools. This invented cable is connected with a device of eliminating radio interference power especially with a device made up of ring iron-core chokes via a cable connecting device. Since the device of eliminating radio interference power and the cable connecting device can be housed in a common individual choke outer shell inside the case, the choke plays the role of additive insulators and since the loose danger of cable connection from a choke to the cable connecting terminal caused by the quality of freely vibrating choke is reduced, the working life is prolonged.
Description
Technical field
The present invention relates to a kind of electric tools, especially a kind of have an instrument motor that the annular core choke disappears and disturbs.
Background technology
The instrument motor of prior art, its feed cable is connected with the device of the radio interference power that a kind of commutator system of eliminating by motor causes, this device that disturbs choke that also is called for example is designed to coil, and this coil comprises a ferrite iron core straight line or annular.The going of known motor toolroom machine disturbs choke to be placed in the groove of casing, if or be the annular core choke, then be inserted on the single mandrel of casing the inside, wherein the connecting line of choke is quite long, until from link position quite far away.Because sizable casing error, choke makes under self vibration in casing and thus with respect to bearing support with considerable gap to have the disappear instrument motor that disturbs of annular core choke and stands to cause the big wearing and tearing that destroy.
Summary of the invention
Technical problem to be solved by this invention provides a kind ofly has the instrument motor that the annular core choke disappears and disturbs, thereby remedies the deficiencies in the prior art.
The technical solution adopted for the present invention to solve the technical problems is: choke is installed in oneself the choke shell according to its size design, and this shell sizes is accurate, no gap and be vibration damping.In addition, the cut cable of choke can be fixed in the choke shell, and can shorten size thus.The choke shell integrated with choke can insert in the casing of hand electric tool, can simplify installation process greatly.The choke shell has the cable connecting arrangement of attaching plug shape.The choke shell is made of plastic, and choke is played a part additional electric(al) insulator.Can carry out on the brush plate opposite in cable connecting arrangement is designed to the situation of plug, the corresponding plug of the most handy choke configuration is carried out.
The invention has the beneficial effects as follows: reduced because undesirable danger of becoming flexible and unclamping that the caused cable from the choke to the cable connecting terminal of the choke quality of free vibration connects.Choke is thus than having the long life-span and having simplified installation up to now.Simple especially with being connected of the cable of guiding to motor and power supply.Because the choke shell is made of plastic, so weight is light especially, and choke is played a part additional electric(al) insulator.Its available sizable mechanical prestress inserts in the corresponding recesses of casing, and can be arranged on thus and have the disappear inside of the instrument motor that disturbs of annular core choke and come to prevent especially reliably change in location.
Description of drawings
What Fig. 1 had installed choke has a disappear vertical view of half unlimited casing of the instrument motor that disturbs of annular core choke.
The enlarged drawing of Fig. 2 Fig. 1.
The part of amplifying once more of half casing of Fig. 3 Fig. 1.
The end view of Fig. 4 choke shell.
Packed into the lateral side view of choke shell of annular core choke of Fig. 5.
Embodiment
Fig. 1 and Fig. 2 represent to have the disappear vertical view of instrument motor 10 inside of disturbing of annular core choke, and a driven roller 13 that is used for driving the not shown abrasive band that rotatably drives is housed in half casing 14 of its casing 12.Pass a cable 16 in the rear end of casing 12.This cable also can be called the brush plate 18 that supports bridge by one and be electrically connected with motor 11.Brush plate 18 is used for the supporting and the commutation of motor 11, and has the rotational speed regulation wheel 20 of a rotational speed regulation unit that is not shown specifically.Choke 22 is connected on brush plate 18 fronts and can eliminates because the interference that electric current between the commutator that is not shown specifically of the brush of brush plate and motor 11 or electric arc cause.Choke 22 inserts in the casing grid 24 of half casing 14.Up, choke 22 has the order of an attaching plug formula and decides screw, is used for the connecting line 28 that is electrically connected cable 16 is fixed in the patchhole 40.Choke 22 itself then is positioned at the inside of a choke shell 30, and this shell is equipped with the choke 35 of band shape iron core 34.Fig. 3 presentation graphs 1 is arranged one section enlarged drawing in choke 22 scopes, can know the structure of the attaching plug formula of the choke shell 30 of finding out the shell grid 24 adjacent with revolution regulating wheel 20 and having hold-down screw 26 from figure.Fig. 4 represents the detail drawing of choke 22, can find out that wherein choke shell 30 is flat cuboids.In addition, also can find out the outlet 38 that choking-winding 34 is drawn and be used for and be electrically connected the patchhole 40 that cable 16 is connected above hold-down screw 26 scopes.Choke shell 30 has downward inclined-plane 42 in its lower end, and these inclined-planes have reduced volume or its volume of choke shell 30, and easily choke shell 30 is introduced in the casing grid 24 of half casing 14 when hand electric tool 10 is installed.Fig. 5 represents the view of corresponding diagram 4 choke shells 30 flat sides, wherein can know to find out annular core 34 and around the winding wire on it 36.In addition, also can know and find out that loop coil 35 is fixed in the circular groove 32 of choke shell 30, wherein radially block loop coil 34 like this, make it be arranged in groove 32 and do not fall down, particularly make its elasticity chucking fixing wherein to projecting inward alignment pin 44 from circular port 32.In addition, choke shell 30 has a straight trough 33 of outwards drawing from its circular groove 32, and the lead-out wire 38 elasticity chucking of loop coil 35 is fixed in this groove.In a unshowned embodiment of the present invention, the choke shell is not with circular groove, but be actually a sipes with a straight cylinder groove one, in this groove, adorn a clavate iron core choke, and similar to Fig. 5, make its elasticity chucking fixing by the elastic positioning pin that prevents to come off and drop out.This new choke is applicable to the whole facility with electric-motor drive, and for example electric hand grinding tool, handsaw, scraper or the like for example also comprise electric kitchen tools.
Claims (6)
1. one kind has the instrument motor that the annular core choke disappears and disturbs, its electrical connection cable (16) particularly is connected with the device (22) that constitutes as the best annular core choke of choke with the device of eliminating radio interference power by cable connecting arrangement (26), it is characterized in that: the device (22) of elimination radio interference power and cable connecting arrangement (26) can be packed into and particularly can be inserted in the inner common independent choke shell (30) of casing (12).
2. according to claim 1 have an instrument motor that the annular core choke disappears and disturbs, it is characterized in that: chokes state shell (30) is designed to flat cuboid especially, and this cuboid has the choke (35) and the lead-out wire (38) thereof of a band shape iron core (34) in a groove (32).
3. according to claim 2 have an instrument motor that the annular core choke disappears and disturbs, and it is characterized in that: groove (32) tightens in ways of connecting with profile with chokes horse stable (35), particularly realizes fixing simultaneously with the power ways of connecting.
4. according to claim 3 have an instrument motor that the annular core choke disappears and disturbs, and it is characterized in that: choke (35) but by elasticity prestress radially inwards the alignment pin (44) of projection but elasticity tighten and be fixed in the hole (32).
5. according to claim 4 have an instrument motor that the annular core choke disappears and disturbs, and it is characterized in that: it is made of plastic particularly to be cubical chokes state's shells (30), and can insert in the shell grid (24) of half casing (14).
6. according to claim 5 have an instrument motor that the annular core choke disappears and disturbs, and it is characterized in that: choke shell (30) is having inclined plane (42) on the base of half casing (14).Count into plug-type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021453993A CN1503434A (en) | 2002-11-26 | 2002-11-26 | Tools motor with interference elimination by toroidal iron-core choke coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021453993A CN1503434A (en) | 2002-11-26 | 2002-11-26 | Tools motor with interference elimination by toroidal iron-core choke coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1503434A true CN1503434A (en) | 2004-06-09 |
Family
ID=34232410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA021453993A Pending CN1503434A (en) | 2002-11-26 | 2002-11-26 | Tools motor with interference elimination by toroidal iron-core choke coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1503434A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959386A (en) * | 2016-10-14 | 2018-04-24 | 罗伯特·博世有限公司 | Remove interference system, driving device and hand held power machine |
-
2002
- 2002-11-26 CN CNA021453993A patent/CN1503434A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959386A (en) * | 2016-10-14 | 2018-04-24 | 罗伯特·博世有限公司 | Remove interference system, driving device and hand held power machine |
| CN107959386B (en) * | 2016-10-14 | 2023-03-14 | 罗伯特·博世有限公司 | Interference suppression system, drive device and hand-held power tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |