CN202307557U - Switch for electric power tool - Google Patents

Switch for electric power tool Download PDF

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Publication number
CN202307557U
CN202307557U CN2011204282333U CN201120428233U CN202307557U CN 202307557 U CN202307557 U CN 202307557U CN 2011204282333 U CN2011204282333 U CN 2011204282333U CN 201120428233 U CN201120428233 U CN 201120428233U CN 202307557 U CN202307557 U CN 202307557U
Authority
CN
China
Prior art keywords
fly
wheel diode
input terminal
static contact
electric tool
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.)
Expired - Fee Related
Application number
CN2011204282333U
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Chinese (zh)
Inventor
陆存荣
Original Assignee
陆存荣
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 陆存荣 filed Critical 陆存荣
Priority to CN2011204282333U priority Critical patent/CN202307557U/en
Application granted granted Critical
Publication of CN202307557U publication Critical patent/CN202307557U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a switch for an electric power tool, belonging to the control switch in the electric field and comprising a shell which is sealed by an insulation base and an insulation close cover, wherein the insulation base is provided with a positive pole power input terminal and a negative pole power input terminal, a first output terminal and a second output terminal; a contact disjunction mechanism, a positive and negative conversion mechanism, a braking protection mechanism and a speed regulation control circuit unit; the contact disjunction mechanism comprises a through static contact; a fly-wheel diode is electrically connected between the through static contact and the positive pole input terminal; an MOS pipe is arranged in the speed regulation control circuit unit; the fly-wheel diode is arranged in the cavity of insulation close cover; and a first card and a second card which are used for electrically connecting with the fly-wheel diode are respectively arranged on the through static contact and the positive power input terminal. The switch for an electric power tool has the advantages of having small volume and compact structure, and being able to be suitable for the development tendency of miniaturization of electric power tools.

Description

Electric tool switch
Technical field:
The utility model relates to the control switch in the electric field, specifically is a kind of electric tool switch.
Background technology:
As everyone knows, all towards the miniaturization development, some electric tool products are no exception for present many products, and anticipation reduces the volume of electric tool product, and what at first will do is exactly the size of dwindling electric tool product inner components.Existing electric tool product is inner all to be equipped with usually and to be used to control electric motor starting, to stop and the electric tool switch of rotating speed; Conventional electric tool switch generally comprises the housing (shell) that is sealed to form by insulator foot and insulative cap; Housing is provided with positive and negative electrode power input terminal and first, second lead-out terminal; Be provided with contact disjunction mechanism, rotating changement, brake protection mechanism and speed-regulating control circuit assembly in the housing; Contact disjunction mechanism comprises straight-through static contact, and straight-through static contact is electrically connected with the cathode power supply input terminal through fly-wheel diode.Because fly-wheel diode is installed in the outside of existing electric tool switch usually; Or rather; Fly-wheel diode is contained on the lateral wall of insulator foot; The pin at its two ends penetrates insulator foot inside and is electrically connected with straight-through static contact and cathode power supply input terminal respectively, and therefore, the thickness of existing electric tool switch is generally all thicker; Its thickness equals the thickness sum of insulator foot and insulative cap and adds the height of fly-wheel diode perpendicular to insulator foot, and the development trend of this and the miniaturization of electric tool product is incompatible.
In addition, metal-oxide-semiconductor is arranged all generally in the above-mentioned speed-regulating control circuit assembly, generally be provided with on the metal-oxide-semiconductor first pin, second pin, the 3rd pin and with second pin be the copper coin of one; First pin and the 3rd pin are welded on the circuit board of speed-regulating control circuit assembly and with circuit board and are electrically connected, and second pin is electrically connected with straight-through static contact, for metal-oxide-semiconductor is fixed firmly; People can increase a copper post usually in addition; And copper post one end is riveted on the wiring board, use screw that the copper coin on the metal-oxide-semiconductor is pressed on the copper post at last, reach the fixedly purpose of metal-oxide-semiconductor; Yet; Increase the manufacturing cost that the copper post can promote electric tool switch undoubtedly greatly in addition, can increase production technology on the wiring board and the copper post is riveted to, this can promote the manufacturing cost of electric tool switch equally.
The utility model content:
The technical problem that the utility model will solve is, provides a kind of volume little, and compact conformation can adapt to the electric tool switch of electric tool product miniaturization development trend.
The technical solution of the utility model is; A kind of electric tool switch with following structure is provided: comprise the housing that is sealed to form by insulator foot and insulative cap; Insulator foot is provided with cathode power supply input terminal and negative power supply input terminal; Be provided with contact disjunction mechanism, rotating changement, brake protection mechanism and speed-regulating control circuit assembly in the housing, contact disjunction mechanism comprises straight-through static contact, is electrically connected with fly-wheel diode between straight-through static contact and the cathode power supply input terminal; In the speed-regulating control circuit assembly metal-oxide-semiconductor is arranged; Wherein, fly-wheel diode is arranged in the insulative cap inner chamber, is respectively equipped with first card and second card that is electrically connected with fly-wheel diode on straight-through static contact and the cathode power supply input terminal.
The described electric tool switch of the utility model; Wherein, can comprise that also is used for the heating panel that fly-wheel diode is dispelled the heat, the insulative cap lateral wall is provided with the groove that supplies heating panel to put into; The degree of depth of groove equates with the thickness of heating panel; Insulative cap is provided with first through hole that supplies fly-wheel diode to expose, and first through hole communicates with groove, and fly-wheel diode passes first through hole and heating panel is close to.
The described electric tool switch of the utility model wherein, can be provided with second through hole that supplies metal-oxide-semiconductor to expose on the insulative cap, second through hole communicates with groove, and metal-oxide-semiconductor passes second through hole and heating panel is close to.
The described electric tool switch of the utility model wherein, can be provided with the reed that is used for fixing metal-oxide-semiconductor on the straight-through static contact, and reed and straight-through static contact are an integral body, and the copper coin on the metal-oxide-semiconductor is fixed on the reed and with reed and is electrically connected.
After adopting above structure; Compared with prior art; The utility model electric tool switch has the following advantages: to add fly-wheel diode different perpendicular to the height of insulator foot with the thickness sum that the thickness of prior art electric tool switch equals insulator foot and insulative cap, and the utility model electric tool switch is packed fly-wheel diode under keeping the constant situation of insulator foot and insulative cap thickness in the insulative cap inner chamber, in other words; The thickness of the utility model electric tool switch only is the thickness sum of insulator foot and insulative cap; Therefore, the volume of the utility model electric tool switch has obtained effectively reducing, after volume reduces; It is compact more that the each several part structure of the utility model electric tool switch can become, and this has adapted to the development trend of electric tool product miniaturization.
The heat that the setting of heating panel is produced in the time of can be with the work of fly-wheel diode and metal-oxide-semiconductor leaves rapidly.
The fixedly effect of metal-oxide-semiconductor had both been played in the setting of straight-through static contact upper reed plate; Play the effect that metal-oxide-semiconductor is electrically connected with straight-through static contact again; This structure has been saved copper post of the prior art; Correspondingly also saved the copper post has been riveted to the production technology on the wiring board, thereby reduced the manufacturing cost of the utility model electric tool switch.
Description of drawings:
Fig. 1 is the stereochemical structure profile sketch map of the utility model electric tool switch;
Fig. 2 is that the master behind hiding insulative cap of the utility model electric tool switch and the heating panel looks the structure for amplifying sketch map;
Fig. 3 is the perspective view of decomposing in the utility model electric tool switch behind heating panel, insulative cap and the metal-oxide-semiconductor.
Embodiment:
Below in conjunction with accompanying drawing and embodiment the utility model electric tool switch is done further explain:
Like Fig. 1, Fig. 2 and shown in Figure 3; In this embodiment; The utility model electric tool switch comprises that the housing that is sealed to form by insulator foot 1 and insulative cap 3 and one are used for the heating panel 4 that fly-wheel diode 8 is dispelled the heat, and insulative cap 3 lateral walls are provided with the groove 2 that supplies heating panel 4 to put into, and the degree of depth of groove 2 equates with the thickness of heating panel 4; Insulator foot 1 is provided with cathode power supply input terminal 14, negative power supply input terminal 7, first lead-out terminal 5 and second lead-out terminal 6; Be provided with contact disjunction mechanism, rotating changement, brake protection mechanism and speed-regulating control circuit assembly in the housing, metal-oxide-semiconductor 15 arranged in the speed-regulating control circuit assembly, metal-oxide-semiconductor 15 be provided with first pin 13, the 3rd pin 12 and with second pin be the copper coin 16 of one; First pin 13 and the 3rd pin 12 are welded on the circuit board 11 in the speed-regulating control circuit assembly and with circuit board 11 and are electrically connected; Contact disjunction mechanism comprises straight-through static contact 20, and straight-through static contact 20 is electrically connected with cathode power supply input terminal 14 through fly-wheel diode 8, and fly-wheel diode 8 is arranged in insulative cap 3 inner chambers; Straight-through static contact 20 is provided with first card 19 that is used for being electrically connected with fly-wheel diode 8 and the reed 21 that is used for fixing metal-oxide-semiconductor 15; Reed 21 is provided with screwed hole 22, and reed 21, first card 19 are an integral body with straight-through static contact 20, and first card 19 is provided with first draw-in groove 18 that supplies fly-wheel diode 8 left end terminal pins to snap in; Cathode power supply input terminal 14 is provided with second card 9 that is used for being electrically connected with fly-wheel diode 8; Second card 9 is an integral body with cathode power supply input terminal 14, and second card 9 is provided with second draw-in groove 10 that supplies fly-wheel diode 8 right-hand member terminal pins to snap in, and holding screw 17 passes heating panel 4, insulative cap 3 and copper coin 16 and is screwed on the screwed hole 22; Thereby copper coin 16 is fixed on the reed 21; Copper coin 16 is electrically connected with reed 21, and insulative cap 3 is provided with and supplies fly-wheel diode 8 first through hole 23 that exposes and second through hole, 24, the first through holes 23 and second through hole 24 that supply metal-oxide-semiconductor 15 to expose all to communicate with groove 2; Fly-wheel diode 8 passes first through hole 23 to be close to heating panel 4, and metal-oxide-semiconductor 15 passes second through hole 24 and is close to heating panel 4.In this embodiment; Described contact disjunction mechanism is except that straight-through static contact 20 parts; Other parts are all identical with prior art, and rotating changement, brake protection mechanism and speed-regulating control circuit assembly are also identical with prior art, so no longer this gives unnecessary details.
Above-described embodiment describes the preferred implementation of the utility model; Be not that scope to the utility model limits; Under the prerequisite that does not break away from the utility model design spirit; Various distortion and improvement that those of ordinary skills make the technical scheme of the utility model all should fall in the definite protection range of the utility model claims.

Claims (4)

1. electric tool switch; Comprise the housing that is sealed to form by insulator foot (1) and insulative cap (3); Insulator foot (1) is provided with cathode power supply input terminal (14) and negative power supply input terminal (7); Be provided with contact disjunction mechanism, rotating changement, brake protection mechanism and speed-regulating control circuit assembly in the housing; Contact disjunction mechanism comprises straight-through static contact (20), is electrically connected with fly-wheel diode (8) between straight-through static contact (20) and the cathode power supply input terminal (14), and metal-oxide-semiconductor (15) is arranged in the speed-regulating control circuit assembly; It is characterized in that: said fly-wheel diode (8) is arranged in insulative cap (3) inner chamber, is respectively equipped with first card (19) and second card (9) that are electrically connected with fly-wheel diode (8) on said straight-through static contact (20) and the cathode power supply input terminal (14).
2. electric tool switch according to claim 1; It is characterized in that: comprise that also is used for the heating panel (4) that fly-wheel diode (8) is dispelled the heat; Said insulative cap (3) lateral wall is provided with the groove (2) that supplies heating panel (4) to put into; The degree of depth of said groove (2) equates with the thickness of heating panel (4); Said insulative cap (3) is provided with first through hole (23) that supplies fly-wheel diode (8) to expose, and first through hole (23) communicates with groove (2), and said fly-wheel diode (8) passes first through hole (23) and is close to heating panel (4).
3. electric tool switch according to claim 2; It is characterized in that: said insulative cap (3) is provided with second through hole (24) that supplies metal-oxide-semiconductor (15) to expose; Second through hole (24) communicates with groove (2), and said metal-oxide-semiconductor (15) passes second through hole (24) and is close to heating panel (4).
4. according to claim 1 or 2 or 3 described electric tool switchs; It is characterized in that: said straight-through static contact (20) is provided with the reed (21) that is used for fixing metal-oxide-semiconductor (15); Reed (21) is an integral body with straight-through static contact (20), and the copper coin (16) on the said metal-oxide-semiconductor (15) is fixed on reed (21) and goes up and be electrically connected with reed (21).
CN2011204282333U 2011-11-02 2011-11-02 Switch for electric power tool Expired - Fee Related CN202307557U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204282333U CN202307557U (en) 2011-11-02 2011-11-02 Switch for electric power tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204282333U CN202307557U (en) 2011-11-02 2011-11-02 Switch for electric power tool

Publications (1)

Publication Number Publication Date
CN202307557U true CN202307557U (en) 2012-07-04

Family

ID=46376401

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011204282333U Expired - Fee Related CN202307557U (en) 2011-11-02 2011-11-02 Switch for electric power tool

Country Status (1)

Country Link
CN (1) CN202307557U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102751117A (en) * 2012-07-11 2012-10-24 乐清市杰拉华电器有限公司 Speed control switch of electric tool
CN103165306A (en) * 2013-03-07 2013-06-19 张家港华捷电子有限公司 Electric tool switch with metal oxide semiconductor (MOS) transistor
CN103198944A (en) * 2013-03-07 2013-07-10 张家港华捷电子有限公司 Electric tool switch with diode
CN103280358A (en) * 2013-06-04 2013-09-04 科都电气有限公司 Direct current speed-control switch
CN105719859A (en) * 2016-04-07 2016-06-29 苏州华之杰电讯有限公司 Diode mounting structure for switch

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102751117A (en) * 2012-07-11 2012-10-24 乐清市杰拉华电器有限公司 Speed control switch of electric tool
CN103165306A (en) * 2013-03-07 2013-06-19 张家港华捷电子有限公司 Electric tool switch with metal oxide semiconductor (MOS) transistor
CN103198944A (en) * 2013-03-07 2013-07-10 张家港华捷电子有限公司 Electric tool switch with diode
CN103280358A (en) * 2013-06-04 2013-09-04 科都电气有限公司 Direct current speed-control switch
CN103280358B (en) * 2013-06-04 2015-09-09 科都电气有限公司 Direct current speed adjustment switch
CN105719859A (en) * 2016-04-07 2016-06-29 苏州华之杰电讯有限公司 Diode mounting structure for switch
CN105719859B (en) * 2016-04-07 2018-12-04 苏州华之杰电讯股份有限公司 A kind of diode mounting structure of switch

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120704

Termination date: 20141102

EXPY Termination of patent right or utility model