CN105023772B - A kind of electric tool dc switch - Google Patents

A kind of electric tool dc switch Download PDF

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Publication number
CN105023772B
CN105023772B CN201510443617.5A CN201510443617A CN105023772B CN 105023772 B CN105023772 B CN 105023772B CN 201510443617 A CN201510443617 A CN 201510443617A CN 105023772 B CN105023772 B CN 105023772B
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China
Prior art keywords
contact
assembly
movable contact
spring
pedestal
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Application number
CN201510443617.5A
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Chinese (zh)
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CN105023772A (en
Inventor
陈卫东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suqian Mingdong Electric Appliance Co., Ltd
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Suzhou Mingdong Appliance Co Ltd
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Priority to CN201510443617.5A priority Critical patent/CN105023772B/en
Publication of CN105023772A publication Critical patent/CN105023772A/en
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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00Contacts
    • H01H1/0015Means for testing or for inspecting contacts, e.g. wear indicator

Abstract

A kind of electric tool dc switch;Including the first assembly, the second assembly and the 3rd assembly;First assembly includes contact base and movable contact spring;Movable contact spring is four and rectangular is arranged in contact base;Riveting is provided with brake movable contact on the movable contact spring of top;On the movable contact spring of lower section, riveting is provided with temperature rise movable contact and durable movable contact respectively on the two ends of bottom surface;3rd assembly includes static contact, cover plate;Riveting is provided with brake stationary contact, durable stationary contact and temperature rise stationary contact on static contact;Static contact relatively it is fixed on the cover board;Second assembly includes pedestal, static contact static contact and is installed in relatively on pedestal;Also include push rod and push rod spring;First assembly is embedded in the second assembly;3rd assembly correspondence is fastened on the second assembly;Push rod is arranged in pedestal and cover plate.Using the switch of the design, electrical endurance is more than 50,000 times, and resistance to temperature rise long afterwards is less than 55K, and durable rear contact resistance is less than 10m Ω, complies fully with international standard.

Description

A kind of electric tool dc switch
Technical field
The invention belongs to electric switch technical field, it is related to a kind of electric tool dc switch, more particularly to a kind of big electricity Flow electric tool dc switch.
Background technology
Germany produces First D.C. electric drill in the world within 1895;1914, there is single-phase series motor driving Electric tool;The sixties, with the development of cell manufacturing techniques, occur in that the electricity as the Wireless of power supply with nickel-cadmium cell Pool electric tool.Nowadays as the development of lithium battery technology, direct current electric power tools are quickly grown, shipment amount continuously increases, skill Art is also continued to develop, and the power of current percentage of batteries formula electric tool does bigger and bigger, and electric current reaches more than DC35A, and voltage reaches More than DC60V, and supporting dc switch development lags behind the development of electric tool.
Existing heavy DC switch all can not be separately through UL61058, IEC61058-1:2008 and GB15092.1- 2010 grade standard authentications, can only be assemblied in completion random test certification in whole machine.And the standard of random test certification is far below single Only Valuation Standard.The difficult point of heavy DC switch certification mainly has at following 4 points:First, contact service life does not reach 50,000 times; 2nd, disconnection moment electric arc in contact is obvious;3rd, contact resistance is bigger than normal after electric durable test;4th, temperature rise is big after electric durable test In 55K.
Therefore, how to solve the above problems, be the content to be studied of those skilled in the art.
The content of the invention
To overcome above-mentioned deficiency of the prior art, present invention aims at a kind of electric tool dc switch of offer, Solve the problem that current large-current electric power driven tools lack suitable switches.
In order to achieve the above objects and other related objects, the present invention provides a kind of electric tool dc switch;Including One assembly, the second assembly and the 3rd assembly;First assembly includes contact base and movable contact spring;The movable contact spring is Four, it is arranged on two-by-two at a distance of rectangular in the contact base respectively;Rivet and set on the bottom surface of two panels movable contact spring above There is brake movable contact;On underlying two panels movable contact spring, wherein riveting is provided with temperature respectively on the two ends of a piece of movable contact spring bottom surface Rise movable contact;Riveting is provided with durable movable contact respectively on the two ends of wherein another movable contact spring bottom surface;The 3rd assembly bag Include static contact, cover plate;The static contact is two panels and riveted up and down at a distance of setting, and on upper static contact provided with brake stationary contact; Riveting is provided with durable stationary contact and temperature rise stationary contact on lower static contact;Upper and lower static contact is relative to be installed on the cover plate;It is described Second assembly includes pedestal, static contact;The static contact is two panels and apart set up and down, and riveting is provided with upper static contact Brake stationary contact;Riveting is provided with durable stationary contact and temperature rise stationary contact on lower static contact;Upper and lower static contact is installed in described relatively On pedestal;Also include push rod and push rod spring;First assembly is embedded in second assembly;3rd assembling Body correspondence is fastened on second assembly;The push rod is arranged in pedestal and cover plate.
In above-mentioned technical proposal, related content is explained as follows:
1st, in such scheme, the cover plate is provided with the commutation hole of arc;Correspondence also is provided with arc commutation on the pedestal Hole;Through hole of the push rod through the cover plate and the arc commutation hole composition on pedestal.
2nd, in such scheme, the push rod is T-shaped.
3rd, in such scheme, spring leaf is provided with the pedestal.
Operation principle of the present invention:Push rod is pressed, contact base drives durable movable contact and temperature rise movable contact to move downward, durable Movable contact and durable stationary contact are first closed, and are closed after temperature rise stationary contact and temperature rise movable contact;Push rod is unclamped, in push rod spring and bullet Reed elastic force effect under, contact base fast upward motion, temperature rise stationary contact and temperature rise movable contact first disconnect, durable movable contact and Disconnected after durable stationary contact.
Because above-mentioned technical proposal is used, the present invention this have the advantage that compared with prior art:
1st, present invention employs the time difference produced by two groups of collateral contact closures, disconnections, disconnected behind the contact first closed, The contact closed afterwards is first disconnected, and electric durable test and temperature rise test are disassembled and, wherein durable movable contact and durable stationary contact Point solves the electric durable problem of switch, and temperature rise stationary contact and temperature rise movable contact solve the problem of temperature rise of switch.Using the design Switch, electrical endurance be more than 50,000 times, resistance to temperature rise long afterwards be less than 55K, durable rear contact resistance be less than 10m Ω, comply fully with state Border standard.
2nd, the protection that switchs uses resistant to elevated temperatures fire-retardant nylon in the present invention, and electric conductor is using resistivity is small, heat dispersion Good fine copper.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention;
Fig. 2 is the first assembly parts structural representation in the present invention;
Fig. 3 is the 3rd assembly parts structural representation one in the present invention;
Fig. 4 is the 3rd assembly parts structural representation two in the present invention;
Fig. 5 is the second assembly parts structural representation one in the present invention;
Fig. 6 is the second assembly parts structural representation two in the present invention;
Fig. 7 is the first assembly parts of the invention and the second assembly parts assembling schematic diagram;
Fig. 8 is the first assembly parts of the invention, the second assembly parts and the 3rd assembly parts assembling schematic diagram.
Embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation Content disclosed by book understands other advantages and effect of the present invention easily.
Fig. 1 is referred to Fig. 8.It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., is only used to Coordinate the content disclosed in specification, so that those skilled in the art is understood with reading, being not limited to the present invention can be real The qualifications applied, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size It is whole, in the case where not influenceing effect of the invention that can be generated and the purpose that can reach, all should still it fall in disclosed skill Art content is obtained in the range of covering.Meanwhile, in this specification it is cited as " on ", " under ", "left", "right", " centre " and The term of " one " etc., is merely convenient to understanding for narration, and is not used to limit enforceable scope of the invention, its relativeness It is altered or modified, under without essence change technology contents, when being also considered as enforceable category of the invention.
As shown in Figures 1 to 8, a kind of electric tool dc switch;Including the first assembly, the second assembly and the 3rd Assembly;First assembly includes contact base 6 and movable contact spring 12;The movable contact spring 12 be four, respectively two-by-two at a distance of into Rectangle is arranged in the contact base 6;Riveting is provided with brake movable contact 15 on the bottom surface of two panels movable contact spring 12 above;Position In on the two panels movable contact spring 12 of lower section, wherein riveting is provided with temperature rise movable contact 4 respectively on the two ends of the bottom surface of a piece of movable contact spring 12;Its In another bottom surface of movable contact spring 12 two ends on respectively riveting be provided with durable movable contact 1;3rd assembly includes static contact 7th, cover plate 11;The static contact 7 is two panels and riveted up and down at a distance of setting, and on upper static contact 7 provided with brake stationary contact 14;Under Riveting is provided with durable stationary contact 2 and temperature rise stationary contact 3 on static contact 7;Upper and lower static contact 7 is relative to be installed on the cover plate 11; Second assembly includes pedestal 10, static contact 7;The static contact 7 is two panels and apart set up and down, and upper static contact 7 Upper riveting is provided with 14 points of stationary contact of brake;Riveting is provided with durable stationary contact 2 and temperature rise stationary contact 3 on lower static contact 7;Upper and lower stationary contact Piece 7 is relative to be installed on the pedestal 10;Also include push rod 8 and push rod spring 9;First assembly is embedded described second In assembly;The 3rd assembly correspondence is fastened on second assembly;The push rod 8 is arranged in pedestal and cover plate It is interior.
The cover plate 11 is provided with the commutation hole 111 of arc;Correspondence also is provided with arc commutation hole 101 on the pedestal 10; Through hole of the push rod 8 through the cover plate 11 and the arc commutation hole composition on pedestal 10.The push rod 8 is T-shaped.
Spring leaf 5 is provided with the pedestal 10.
Operation principle of the present invention:Push rod 8 is pressed, contact base 6 drives durable movable contact 1 and temperature rise movable contact 4 to move downward, Durable movable contact 1 and durable stationary contact 2 are first closed, and are closed after temperature rise stationary contact 3 and temperature rise movable contact 4;Push rod 8 is unclamped, is being pushed away Under the elastic force effect of bar spring 9 and spring leaf 5, the fast upward motion of contact base 6, temperature rise stationary contact 3 and temperature rise movable contact 4 first break Open, disconnected after durable movable contact 1 and durable stationary contact 2.
Because above-mentioned technical proposal is used, the present invention this have the advantage that compared with prior art:
1st, the advantage of invention is to employ two groups of collateral contact closures, disconnect the produced time difference, is first closed Disconnected behind the contact of conjunction, the contact closed afterwards first disconnects, electric durable test and temperature rise test are disassembled and, wherein durable dynamic Contact and durable stationary contact solve the electric durable problem of switch, and the temperature rise that temperature rise stationary contact and temperature rise movable contact solve switch is asked Topic.Using the switch of the design, electrical endurance is more than 50,000 times, and resistance to temperature rise long afterwards is less than 55K, and durable rear contact resistance is less than 10m Ω, complies fully with international standard.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as Into all equivalent modifications or change, should by the present invention claim be covered.

Claims (2)

1. a kind of electric tool dc switch;It is characterized in that:Including the first assembly, the second assembly and the 3rd assembling Body;First assembly includes contact base and movable contact spring;The movable contact spring is four, is arranged on two-by-two at a distance of rectangular respectively In the contact base;Riveting is provided with brake movable contact on the bottom surface of two panels movable contact spring above;Underlying two panels is moved On contact, wherein riveting is provided with temperature rise movable contact respectively on the two ends of a piece of movable contact spring bottom surface;Wherein another movable contact spring bottom surface Two ends on respectively riveting be provided with durable movable contact;3rd assembly includes static contact, cover plate;The static contact is two panels And up and down at a distance of setting, and riveting is provided with brake stationary contact on upper static contact;On lower static contact riveting provided with durable stationary contact and Temperature rise stationary contact;Upper and lower static contact is relative to be installed on the cover plate;Second assembly includes pedestal, static contact;It is described Static contact is two panels and riveted up and down at a distance of setting, and on upper static contact provided with brake stationary contact;Rivet and be provided with lower static contact Durable stationary contact and temperature rise stationary contact;Upper and lower static contact is relative to be installed on the pedestal;Also include push rod and push rod spring; First assembly is embedded in second assembly;The 3rd assembly correspondence is fastened on second assembly On;The push rod is arranged in pedestal and cover plate;The cover plate is provided with the commutation hole of arc;Correspondence also is provided with the pedestal Arc commutation hole;Through hole of the push rod through the cover plate and the arc commutation hole composition on pedestal;The push rod is T-shaped.
2. electric tool dc switch according to claim 1, it is characterised in that:Spring leaf is provided with the pedestal.
CN201510443617.5A 2015-07-24 2015-07-24 A kind of electric tool dc switch Active CN105023772B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510443617.5A CN105023772B (en) 2015-07-24 2015-07-24 A kind of electric tool dc switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510443617.5A CN105023772B (en) 2015-07-24 2015-07-24 A kind of electric tool dc switch

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CN105023772A CN105023772A (en) 2015-11-04
CN105023772B true CN105023772B (en) 2017-07-14

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111430169B (en) * 2020-05-09 2022-06-10 浙江赫灵电气有限公司 Asynchronous utensil switch of contact group break-make

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103210460A (en) * 2010-09-17 2013-07-17 佐治时力高股份有限及两合公司 Single-row emergency-stop switch-contact device
CN204884911U (en) * 2015-07-24 2015-12-16 苏州市明东电器股份有限公司 Direct current switch for electric tool

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6054160B2 (en) * 2012-12-11 2016-12-27 帝国通信工業株式会社 Mounting structure of the slider to the mounted body

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103210460A (en) * 2010-09-17 2013-07-17 佐治时力高股份有限及两合公司 Single-row emergency-stop switch-contact device
CN204884911U (en) * 2015-07-24 2015-12-16 苏州市明东电器股份有限公司 Direct current switch for electric tool

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Address after: 215106, No. 688, Yin Yin Road, Lake Town, Wuzhong District, Jiangsu, Suzhou

Applicant after: SUZHOU MINGDONG APPLIANCE CO., LTD.

Address before: 215106, No. 688, Yin Yin Road, Lake Town, Wuzhong District, Jiangsu, Suzhou

Applicant before: SUZHOU MINGDONG ELECTRIC APPLIANCE CO., LTD.

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Effective date of registration: 20200123

Address after: No.15 Hangzhou Road, Longhe New Town Economic Development Zone, Sucheng District, Suqian City, Jiangsu Province

Patentee after: Suqian Mingdong Electric Appliance Co., Ltd

Address before: 215106, No. 688, Yin Yin Road, Lake Town, Wuzhong District, Jiangsu, Suzhou

Patentee before: SUZHOU MINGDONG APPLIANCE CO., LTD.

TR01 Transfer of patent right