CN202905609U - Contactor with higher insulation voltage - Google Patents
Contactor with higher insulation voltage Download PDFInfo
- Publication number
- CN202905609U CN202905609U CN201220479214.8U CN201220479214U CN202905609U CN 202905609 U CN202905609 U CN 202905609U CN 201220479214 U CN201220479214 U CN 201220479214U CN 202905609 U CN202905609 U CN 202905609U
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- trace
- iron core
- contactor
- moving
- upper shell
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Abstract
The utility model discloses a contactor with higher insulation voltage, which comprises the following components: a lower housing, a hollow coil which is equipped in the lower housing, a static core which is equipped in the hollow coil, a moving core which is equipped in the hollow coil, a reaction spring which has one end that is equipped in the static core and the other end that is equipped in the moving core; an upper housing which is connected with the lower housing through a mounting base, a wiring board which is equipped on the upper housing, a static contact which is equipped on the wiring board; a linkage rod which is equipped in the moving core; a linkage rod sleeve which is provided at the other end of the linkage rod; a moving contact which is equipped at one end of the linkage rod sleeve; and a contact spring which is sleeved on the linkage rod sleeve. The linkage rod and the linkage rod sleeve are made of prior-art non-metal material with reinforced flame retardance. The contactor with higher insulation voltage has the following advantages: simple structure, low manufacturing cost; large creepage distance between the moving contact and moving core; insulation problem settlement between the moving contact and linkage rod; elimination of the mounting mode with an insulated bracket; reduced manufacturing cost, high convenience in mounting and use, and high safety.
Description
Technical field
The utility model relates to a kind of contactor, especially a kind of contactor that improves insulation voltage.
Background technology
Be used for switching the single-pole dc contact of buffer resistance on the present domestic frequency converter, what most of frequency converter producer used is that rated operational voltage is 48V, insulation voltage only has the single-pole dc contact of 60V, and the voltage on the frequency changer direct current bus of operating voltage 380V uses this contactor to bring higher potential safety hazard to frequency converter up to more than the 500V.Frequency converter DC bus-bar voltage when normally starting and stopping is very low, be lower than the 48V rated operational voltage of contactor, contactor is in not disjunction state for a long time during normal operation, so there is not the breaking capacity problem of connecting in contactor, even the arc extinguishing problem also can be considered, so it is guaranteed using this contactor reliable at frequency converter, but the frequency converter of operating voltage 380V is that DC bus-bar voltage can rise to more than the 500V in normal operation, although frequency converter producer has taked some insulation measures in the periphery of contactor, but still have potential safety hazard, and increased cost.Frequency converter producer suffers from does not have suitable product substitution, is using this product so appoint so.
The contactor metal shell need to form closed magnetic circuit with iron core simultaneously, so the shell of this class contactor must adopt the soft iron material of metallic conduction to make, shell can't adopt insulating material, so the insulation voltage of this class contactor is lower.In order to solve Insulation Problems, frequency converter producer takes to use the method for insulating support in the periphery of contactor, make the unsettled installation of contactor, and doing has so not only increased cost, and also fundamentally solution of Insulation Problems, still leaves potential safety hazard.
Existing insulation voltage is that insulation voltage is the common single-pole dc contact of 60V, trace adopts metal material, creepage distance between moving contact and contact spring and the trace only satisfies the insulating requirements of 60V, and the metal trace passes the moving iron core of metal material, moving iron core contacts with the metal shell of contactor again, when the voltage of connecting when moving contact is higher than 60V, uses in DC bus-bar voltage is the frequency converter of 500V, the contactor metal shell has charged possibility, exists potential safety hazard.
Summary of the invention
For solving the problems of the technologies described above, the utility model provides a kind of can bring up to 1500V with the insulation voltage of contactor, the contactor of the raising insulation voltage that cost is low simultaneously.
The technical solution of the utility model is a kind of contactor that improves insulation voltage, comprise lower house, be arranged on hollow coil in the lower house, be arranged on static iron core in the hollow coil, be arranged in the hollow coil and can be arranged in the static iron core along moving iron core, the end that the hollow coil cavity slides up and down, the other end is arranged on the reaction spring in the moving iron core; The upper shell that links to each other with lower house by mount pad, the terminal block that is arranged on upper shell; Penetrate simultaneously terminal block, upper shell and moving iron core, can move axially and an end and the contacted trace of reaction spring that is arranged in the moving iron core along terminal block, upper shell and moving iron core; Be provided with two fixed contacts on the terminal block, and fixed contact is positioned at the trace both sides; The trace other end is arranged with trace cover with matching; Trace overlaps an end and is provided with moving contact; Be sleeved on the touch spring that trace puts and an end links to each other with moving contact; Aforesaid trace and the trace cover that is arranged on the trace adopt the nonmetallic materials of existing enhancing anti-flammability to make; The external stability of upper shell is provided with insulating barrier, follows closely by the wiring that insulating barrier links to each other with upper shell.
The nonmetallic materials of existing enhancing anti-flammability described in the utility model are: nylon polyhexamethylene adipamide PA66, polyphenylene thioether PPS, benzene dicarboxylic acid butanediol ester PBT, aluminium oxide ceramics Ai203, zirconia ceramics ZrO2 etc.
As further improvement of the utility model, by tapping screw touch spring, trace cover and trace are fixed into one.
As further improvement of the utility model, also comprise the arc extinguishing dust cap, the arc extinguishing dust cap is located on the terminal block by dust ring.To prevent that outside dust from entering, the sensitivity of contactor is impacted, to set up simultaneously dust cap also in order under the large rugged environment of dust, using.
As further improvement of the utility model, also comprise the lower dust cap that is arranged on the lower house.To prevent that outside dust from entering, the sensitivity of contactor is impacted, to set up simultaneously dust cap also in order under the large rugged environment of dust, using.
The beneficial effects of the utility model are: simple in structure, low cost of manufacture of the present utility model; Creepage distance between moving contact and the moving iron core is large; Trace and trace cover adopt the nonmetallic materials of existing enhancing anti-flammability to make, and have improved the insulation voltage of contactor, and insulation voltage is brought up to 1500V; Improve simultaneously the fail safe of product, expanded the product scope of application; Solved the Insulation Problems between moving contact and the trace, saved the mounting means that adopts insulating support, reduced production cost and installation, use more convenient, safe.
Description of drawings
Fig. 1 is outline drawing of the present utility model.
Fig. 2 is the A-A cutaway view of Fig. 1.
Wherein: 1, trace cover, 2, trace, 3, moving contact, 4, fixed contact, 5, terminal block, 6, upper shell, 7, moving iron core, 8, static iron core, 9, coil, 10, lower house, 11, lower dust cap, 12, the arc extinguishing dust cap, 14, dust ring, 15, reaction spring, 16, touch spring, 21, wiring nail, 22, insulating barrier.
Embodiment
For making technological means of the present utility model, creation characteristic, reaching purpose and effect is easy to understand, below in conjunction with Fig. 1-Fig. 2 the utility model is further specified:
A kind of contactor that improves insulation voltage of the present utility model comprises trace cover 1, trace 2, moving contact 3, fixed contact 4, terminal block 5, upper shell 6, moving iron core 7, static iron core 8, coil 9, lower house 10, lower dust cap 11, arc extinguishing dust cap 12, dust ring 14, reaction spring 15, touch spring 16, wiring nail 21 and insulating barrier 22.
Concrete structure of the present utility model is: coil 9 is installed in the lower house 10, and common metal material is made in the lower house 10 employing prior aries; The center of coil 9 is provided with the through hole of perforation.Static iron core 8 is arranged in the through hole of coil 9, and maintains static; Moving iron core 7 be arranged on coil 9 through hole top simultaneously moving iron core 7 in the course of the work, when coil 9 energising, static iron core 8 produces electromagnetic attractions, moving iron core 7 is to static iron core 8 motions, therefore moving iron core 7 can slide up and down along the through hole of the perforation in the coil 9.The center of static iron core 8 and moving iron core 7 is respectively arranged with to install the reaction spring installing hole of reaction spring 15; Reaction spring 15 is installed in the reaction spring installing hole of static iron core 8 and moving iron core 7 interior settings, and an end of reaction spring 15 and static iron core 8 interior reaction spring installing holes contact simultaneously;
Trace cover 1 is sleeved on the other end of trace 2, moving contact 3 is sleeved on the outer circumference surface of trace cover 1, moving contact 3 becomes interference fit gradually by the matched in clearance installation in installation process installs, so that moving contact 3 is installed on the outer circumference surface of trace cover 1 reliably.Touch spring 16 is sleeved on the outer circumference surface of trace cover 1, and an end of its touch spring 16 contacts with moving contact 3 simultaneously.By tapping screw touch spring 16, trace cover 1 are fixedly mounted on the trace 2, so that be fixed into an integral body.
In order to prevent that outside dust from entering, sensitivity to contactor impacts, also in order under the large rugged environment of dust, to use, be fixedly installed arc extinguishing dust cap 12 by dust ring 14 above terminal block 5, arc extinguishing dust cap 12 all wraps in inside with moving contact 3, touch spring 16, trace cover 1 and trace 2; End at lower house 10 is provided with lower dust cap 11, and lower dust cap 11 has stoped outside dust directly to enter in static iron core 8 and the moving iron core 7.
Trace 2 and trace cover 1 adopt the nonmetallic materials of existing enhancing anti-flammability to make; Nonmetallic materials are nylon polyhexamethylene adipamide PA66, polyphenylene thioether PPS, benzene dicarboxylic acid butanediol ester PBT, aluminium oxide ceramics Ai203, zirconia ceramics Zr02 etc.
Trace 2 and trace cover 1 adopt the nonmetallic materials of existing enhancing anti-flammability to make the Insulation Problems that has solved between moving contact 3 and the trace 2.The trace 2 of common single-pole contactor adopts metal material to make, and the creepage distance between moving contact 3 and the trace 2 is less, and the insulation voltage of contactor only has 60V.The utility model adopts nonmetallic materials to make, and has increased the creepage distance between moving contact 3 and the trace 2, and the insulation voltage of contactor is brought up to 1500V, has improved simultaneously the fail safe of product, has expanded the scope of application of product.
Trace in the contactor of the present utility model adopts the nonmetallic materials that strengthen anti-flammability to make, and the creepage distance between moving contact 3 and touch spring 16 and the trace 2 increases, and the insulation voltage of contactor is brought up to 1500V.And trace 2 passes the moving iron core of metal material, moving iron core contacts with the metal shell of contactor again, when the voltage of moving contact connection is higher than 60V, in being the frequency converter of 500V, DC bus-bar voltage uses, the contactor metal shell does not have charged possibility yet, so that the security performance of contactor improves greatly.
Operation principle of the present utility model:
Work as power connection, 21 energisings of wiring nail, coil 9 powers on, and static iron core 8 produces electromagnetic attraction, and moving iron core 7 overcomes the elastic force of counter-force spring 15, to static iron core 8 motions; Because the moving iron core 7 inner traces 2 that fixedly are inconjunction with, so 7 motions of moving iron core will drive trace 2 and follow and move iron core 7 and move downward; Again because moving contact 3 is installed in the upper end of trace 2 by trace cover 1, trace 2 is followed and is also driven moving contact 3 when moving iron core 7 moves downward and move downward, so that moving contact 3 and fixed contact 4 contact the closing of contact, thereby control load.
Work as power cut-off, 21 outages of wiring nail, during coil 9 dead electricity, the electromagnetic attraction of static iron core 8 disappears, rely on the reaction force of reaction spring 15, moving iron core 7 separates with static iron core 8, and moving iron core 7 upwards returns to original position, the top of moving iron core 7 contacts with upper shell 6, so that moving iron core 7 arrives the fixed position; Simultaneous linkage bar 2 moves upward, and moving contact 3 and fixed contact 4 disconnect, and the contact disconnects, and stops the control to load.
Contact of the present utility model is one pole, the nature arcing, flashover distance is zero, in frequency converter, use the dynamo-electric life-span can reach 1,000,000 times, annual nearly 300,000 frequency converters of China adopt D.C. contactor, for null solution is broken off relations the edge problem, frequency converter producer adopts the method for insulating support in the periphery of contactor, make the unsettled installation of contactor.The cost of an insulating support is about 10 yuan.Use after the utility model product, can save 300,000 supports, calculate by 10 yuan/platform, can annually save 3,000,000 yuan.
More than show and description, basic principle of the present invention, primary structure and advantage of the present utility model have been described.The technical staff of the industry should understand; the utility model is not subjected to the restriction of above-mentioned execution mode; that describes in above-mentioned execution mode and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. contactor that improves insulation voltage is characterized in that:
Comprise lower house (10), be arranged on hollow coil (9) in the lower house (10), be arranged on static iron core (8) in the hollow coil (9), be arranged in the hollow coil (9) and can be arranged on along moving iron core (7), the end that hollow coil (9) cavity slides up and down in the static iron core (8), the other end is arranged on the reaction spring (15) in the moving iron core (7);
The upper shell (6) that links to each other with lower house (10) by mount pad, the terminal block (5) that is arranged on upper shell (6);
Penetrate simultaneously terminal block (5), upper shell (6) and moving iron core (7), can move axially and an end and the contacted trace of reaction spring (15) (2) that is arranged in the moving iron core (7) along terminal block (5), upper shell (6) and moving iron core (7); Be provided with two fixed contacts (4) on the terminal block (5), and fixed contact (4) is positioned at trace (2) both sides; Trace (2) other end is arranged with trace cover with matching (1); Trace cover (1) one end is provided with moving contact (3); Be sleeved on the touch spring (16) that trace cover (1) is upper and an end links to each other with moving contact (3); Aforesaid trace (2) and the trace cover (1) that is arranged on the trace (2) adopt the nonmetallic materials of existing enhancing anti-flammability to make;
The external stability of upper shell (6) is provided with insulating barrier (22), follows closely (21) by the wiring that insulating barrier (22) links to each other with upper shell (6).
2. the contactor of raising insulation voltage according to claim 1 is characterized in that: by tapping screw touch spring (16), trace cover (1) and trace (2) are fixed into one.
3. the contactor of raising insulation voltage according to claim 1, it is characterized in that: also comprise arc extinguishing dust cap (12), arc extinguishing dust cap (12) is located on the terminal block (5) by dust ring (14).
4. the contactor of raising insulation voltage according to claim 1 is characterized in that: also comprise the lower dust cap (11) that is arranged on the lower house (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220479214.8U CN202905609U (en) | 2012-09-19 | 2012-09-19 | Contactor with higher insulation voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220479214.8U CN202905609U (en) | 2012-09-19 | 2012-09-19 | Contactor with higher insulation voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202905609U true CN202905609U (en) | 2013-04-24 |
Family
ID=48126243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220479214.8U Expired - Lifetime CN202905609U (en) | 2012-09-19 | 2012-09-19 | Contactor with higher insulation voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202905609U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107622917A (en) * | 2017-10-13 | 2018-01-23 | 三友联众集团股份有限公司 | A kind of electromagnetic relay |
| CN109727817A (en) * | 2017-10-31 | 2019-05-07 | 欧姆龙株式会社 | Electromagnetic relay |
| CN111211011A (en) * | 2015-04-13 | 2020-05-29 | 松下知识产权经营株式会社 | Electromagnetic relay |
-
2012
- 2012-09-19 CN CN201220479214.8U patent/CN202905609U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211011A (en) * | 2015-04-13 | 2020-05-29 | 松下知识产权经营株式会社 | Electromagnetic relay |
| CN107622917A (en) * | 2017-10-13 | 2018-01-23 | 三友联众集团股份有限公司 | A kind of electromagnetic relay |
| CN109727817A (en) * | 2017-10-31 | 2019-05-07 | 欧姆龙株式会社 | Electromagnetic relay |
| CN109727817B (en) * | 2017-10-31 | 2020-10-09 | 欧姆龙株式会社 | Electromagnetic relay |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130424 |