CN105244196A - Contact arm structure - Google Patents
Contact arm structure Download PDFInfo
- Publication number
- CN105244196A CN105244196A CN201510630966.8A CN201510630966A CN105244196A CN 105244196 A CN105244196 A CN 105244196A CN 201510630966 A CN201510630966 A CN 201510630966A CN 105244196 A CN105244196 A CN 105244196A
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- CN
- China
- Prior art keywords
- contact
- contact arm
- arc
- arm structure
- groove
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/62—Heating or cooling of contacts
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses a contact arm structure, which comprises a contact arm cylinder and a contact, wherein a spout and a fixed end are respectively arranged at two ends of the contact arm cylinder; the contact comprises contact plates, offset ring plates and tension springs; annular matching grooves which are arranged and connected with the contact plates in a matching manner are formed in the outer wall of the cylinder on the spout; each contact plate is in a long sheet form and comprises an inner side and an outer side; a first arc-shaped projection part contacting each matching groove is arranged at one end of the inner side of each contact plate; a second arc-shaped projection part contacting each static contact is arranged at the other end of the inner side of each contact plate; the axis diameters of the matching grooves are phi30mm to phi40mm; the outer arc radiuses of the first arc-shaped projection parts are R12mmto R18.5mm; the outer arc radiuses of the second arc-shaped projection parts are R7mm to R20mm; and an aluminum material 6082-T6 is adopted as the material of the contact arm cylinder. The contact arm structure has the advantages that the manufacturing materials are saved and the manufacturing cost is reduced.
Description
Technical field
The present invention relates to a kind of contact arm structure.
Background technology
In the distribution industry of middle-placed switch cabinet, due to the market competition of fierceness, the production cost that city's field alignment puts cabinet manufacturer proposes strict requirement.Contact arm is the core component of middle-placed switch cabinet, is also an Important Components of circuit breaker, when meeting performance requirement, reduces production cost very urgent.
The material of 1250A contact arm general is in the market red copper (T2Y) or Cu and Al combination body, and material cost is higher.Its contact arm structure comprises contact arm cylindrical shell and contact, the two ends of contact arm cylindrical shell are respectively mouth mouth and stiff end, contact comprises contact, plum blossom sheet and extension spring, mouth mouth cylinder body outer wall is provided with the annular engagement groove coordinating attaching with contact, contact is a microscler sheet, there is the inner side and outer side corresponding to its attaching mode, there is inside one end of contact the first arc protuberance contacted with mating groove, there is inside the contact other end the second arc protuberance coordinating with fixed contact and contact, the diameter of axle of mating groove is φ 28mm, the outer arc radius of the first arc protuberance is R10mm, namely the contact area of contact arm cylindrical shell and contact is still less, the outer arc radius of the second arc protuberance is R5mm, namely the contact area of contact and fixed contact is still less, therefore, in order to increase the contact area of contact and contact arm cylindrical shell and fixed contact, contact thickness is in the market 3mm.
Secondly, widely used 1250A contact is by 24 copper contact blades (contact thickness 3mm) in the market, plum blossom frame and 4 extension springs form, 24 contacts every 2 one group, totally 12 groups are assembled in the groove of plum blossom frame respectively, and plum blossom frame is riveted by three pillars and two panels plum blossom sheet and formed.Overall calculation comes, and the materials of contact are too much, and because the riveted joint of pillar limits, the activity of contact is poor, and what affect contact and fixed contact is engaged effect.
In addition, as shown in Figure 1, contact on market is projection one boss 210 again bottom the first arc protuberance often, the step surface that boss is formed with the cylindrical shell below mating groove and mating groove coordinates, on contact arm cylindrical shell, adaptive location is obtained to make contact, if but this step surface is improved, then this boss will become non-essential part, and therefore this boss also result in inventory charge to a certain extent.
Therefore, contact arm structure of the prior art has following shortcoming: consumptive material is many, manufacturing cost is high.
Summary of the invention
The invention provides a kind of contact arm structure, which overcome the deficiencies in the prior art described in background technology.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of contact arm structure, it comprises contact arm cylindrical shell and contact, one end of contact arm cylindrical shell is the mouth mouth connected with contact, the other end is the stiff end fixing with circuit breaker, contact comprises contact, plum blossom sheet and extension spring, the cylinder body outer wall at mouth mouth place is provided with the annular engagement groove coordinating attaching with contact, contact is a microscler sheet, there is the inner side and outer side corresponding to its attaching mode, one end inside contact has the first arc protuberance contacted with mating groove, the other end inside contact has the second arc protuberance coordinating with fixed contact and contact, the diameter of axle of described mating groove is φ 30mm-φ 40mm, the outer arc radius of described first arc protuberance is R12mm-R18.5mm, the outer arc radius of described second arc protuberance is R7mm-R20mm, described contact arm cylinder material adopts aluminium 6082-T6.
Among one embodiment: the first arc protuberance of described contact one end is flat face in the side of contact length direction and is the lowermost end of one end of described contact.
Among one embodiment: be interval with two between the two ends inside described contact and be respectively used to the draw-in groove with each groove phase clamping of two plum blossom sheets, described plum blossom sheet passes through two draw-in grooves of contact between the upper and lower every corresponding attaching.
Among one embodiment: corresponding attaching one contact in the groove of described two plum blossom sheets.
Among one embodiment: the thickness of described contact is 2mm.
Among one embodiment: the number of described contact is 26, and the thickness of contact is 2mm.
Among one embodiment: the outside of described contact is provided with four for coordinating the arc groove of attaching with extension spring.
Among one embodiment: described mouth mouth end outer rim is provided with rounding, the radian diameter of rounding is φ 36mm-φ 45mm.
Among one embodiment: described mating groove and the cylindrical shell below it form step surface, below it, cylindrical shell external diameter is φ 38mm-φ 46mm.
The technical program is compared with background technology, and its tool has the following advantages:
1, contact arm cylinder material adopts aluminium 6082-T6, the diameter of axle of mating groove increases to φ 30mm-φ 40mm, the outer arc radius of the first arc protuberance increases to R12mm-R18.5mm, thus add the contact area of contact arm cylindrical shell and contact, the outer arc radius of the second arc protuberance increases to R7mm-R20mm, thus add the contact area of contact and fixed contact, by changing the contact site structure between contact arm cylindrical shell, contact and fixed contact three, under the prerequisite of serviceability meeting product, again reduce manufacturing cost.
2, the first arc protuberance of described contact one end is flat face in the side of contact length direction and is the lowermost end of one end of described contact, saves the projection section of contact described in prior art, saves consumptive material, reduce manufacturing cost.
3, be interval with two between the two ends inside described contact and be respectively used to the draw-in groove with each groove phase clamping of two plum blossom sheets, described plum blossom sheet passes through two draw-in grooves of contact between the upper and lower every corresponding attaching, add the activity of contact, be convenient to contact be better engaged with fixed contact, ensure contact and contact arm cylindrical shell, fully the contacting of fixed contact.
Corresponding attaching one contact in the groove of 4, described two plum blossom sheets, increases the contact area of contact and plum blossom sheet, and improvement conductivity, is also beneficial to the heat radiation of contact simultaneously.
5, the number of described contact is 26, and the thickness of contact is 2mm, saves consumptive material, reduces manufacturing cost.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 depicts the contact plate structure figure described in background technology.
Fig. 2 depicts contact arm tube structure figure.
Fig. 3 depicts contact plate structure figure.
Fig. 4 depicts plum blossom chip architecture figure.
Fig. 5 depicts contact installation diagram.
Fig. 6 depicts the installation diagram of contact arm cylindrical shell and contact.
Fig. 7 depicts the assembling half sectional view of contact arm cylindrical shell, contact.
Fig. 8 depicts the assembling half sectional view of contact arm cylindrical shell, contact, fixed contact.
Embodiment
Please refer to Fig. 2 to Fig. 8, a kind of contact arm structure, it comprises contact arm cylindrical shell 10 and contact 20, and one end of contact arm cylindrical shell 10 is the mouth mouth 11 connected with contact 20, and the other end is the stiff end fixing with circuit breaker, and contact 20 comprises contact 21, plum blossom sheet 22 and extension spring 23.
The cylinder body outer wall at described mouth mouth 11 place is provided with the annular engagement groove 111 coordinating attaching with contact 21.Contact 21 is a microscler sheet, has corresponding to the inner side (towards cylindrical shell axle center during attaching) of its attaching mode and outside (during attaching dorsad cylindrical shell axle center), one end inside contact 21 has the first arc protuberance 211 contacted with mating groove 111, and the other end inside contact 21 has the second arc protuberance 212 coordinating with fixed contact 30 and contact, the diameter of axle of this mating groove 111 is φ 30mm-φ 40mm, and preferably, the diameter of axle of this mating groove 111 is φ 36mm, the outer arc radius of this first arc protuberance 211 is R12mm-R18.5mm, and preferably, the outer arc radius of this first arc protuberance 211 is R16.5mm, make this first arc protuberance 211 more straight with the arc surface of this mating groove 111 by the increase diameter of axle of mating groove 111 and the outer arc radius of the first arc protuberance 211, thus increase the contact area of contact arm cylindrical shell 10 and contact 21, the outer arc radius of this second arc protuberance 212 is R7mm-R20mm, and preferably, the outer arc radius of this second arc protuberance 212 is R20mm, make the arc surface of this second arc protuberance 212 more straight by the outer arc radius increasing the second arc protuberance 212, thus increase the contact area of contact 21 and fixed contact 30, by changing contact arm cylindrical shell 10, contact site structure between contact 21 and fixed contact 30 three, strengthen the contact area between them, thus the contact conductivity improved between them, under the prerequisite of serviceability tested by dynamic heat and temperature rise etc. and meet product, aluminium 6082-T6 is adopted to manufacture contact arm cylindrical shell, the thickness of contact 21 is reduced to 2mm, the contact area of contact 21 also can not reduce, the weight of contact 21 reduces to 11.6 grams by original 20.2 grams, save the material of 43.1%, greatly reduce manufacturing cost, make product environmental protection more.
This mouth mouth 11 end outer rim is provided with rounding 112, mating groove 111 with its below cylindrical shell 113 forming station terrace, in better embodiment, the radian diameter of this rounding 112 is φ 36mm-φ 45mm, below this mating groove 111, cylindrical shell 113 external diameter is φ 38mm-φ 46mm, preferably, the radian diameter of this rounding 112 is φ 42mm, below this mating groove 111, cylindrical shell 113 external diameter is φ 44, by increasing the external diameter of the below cylindrical shell 113 of mating groove 111, to increase the width of step surface, thus increase the contact area of contact 21 and contact arm cylindrical shell 10, also be conducive to the first arc protuberance 211 fixing in this mating groove 111 of contact 21 simultaneously.
The first arc protuberance 211 of this contact 21 one end is flat face in the side of contact length direction and is the lowermost end of one end of described contact 21.Save the projection section of contact described in prior art, save consumptive material, reduce manufacturing cost.
Be interval with two between two ends inside this contact 21 and be respectively used to the draw-in groove 213 with each groove 221 phase clamping of two plum blossom sheets 22, plum blossom sheet passes through two draw-in grooves 213 of contact 21 between the upper and lower every corresponding attaching, two plum blossom sheets 22, in free state, are riveted without the need to three pillars.This attaching mode adds the activity of contact 30, is convenient to contact 21 and is better engaged with fixed contact 30, ensures contact 21 and contact arm cylindrical shell 10, fully the contacting of fixed contact 30.Corresponding attaching one contact 21 in the groove 221 of two plum blossom sheets 22, namely contact 21 adopts the form of monolithic to be assembled in each groove 221 of upper and lower two plum blossom sheet 22 correspondences, increase contact 21 and the contact area of mating groove 111, fixed contact 30, improve conductivity, be also beneficial to the heat radiation of contact 21 simultaneously.The number of this contact 21 is 26, and the thickness of contact 1 is 2mm, saves consumptive material generally, reduces manufacturing cost.
The outside of described contact 21 is provided with four for coordinating the arc groove 214 of attaching with extension spring 23.
The present invention increases cylindrical shell 10, contact conductive area between contact 21 and fixed contact 30 by the structure changing the contact portion on contact arm cylindrical shell 10, contact 21, improve the conductive characteristic between them on the one hand, also enable the present invention on the other hand under the prerequisite of serviceability tested by dynamic heat and temperature rise etc. and meet product, use the making material of aluminium 6082-T6 as contact arm cylindrical shell 10 instead, reduce the thickness of contact 21 simultaneously, be the red copper sheet material that 3mm red copper sheet material changes that thickness is 2mm into by former contact thickness, greatly save material, reduce cost.
The present invention is also by changing the structure of contact 21 and changing the composition structure (namely changing the mounting means between contact 21 and plum blossom sheet 22) of contact 20, improve the conductive characteristic of contact 20, activity characteristic and heat dispersion further, also save the material materials of contact part further simultaneously, save material, reduce cost, under the prerequisite ensureing the original serviceability of the present invention, further increase overall performance of the present invention and reduce manufacturing cost.
The above, be only present pre-ferred embodiments, therefore can not limit scope of the invention process according to this, the equivalence change namely done according to the scope of the claims of the present invention and description with modify, all should still belong in scope that the present invention contains.
Claims (9)
1. a contact arm structure, comprise contact arm cylindrical shell and contact, one end of contact arm cylindrical shell is the mouth mouth connected with contact, the other end is the stiff end fixing with circuit breaker, contact comprises contact, plum blossom sheet and extension spring, the cylinder body outer wall at mouth mouth place is provided with the annular engagement groove coordinating attaching with contact, contact is a microscler sheet, there is the inner side and outer side corresponding to its attaching mode, one end inside contact has the first arc protuberance contacted with mating groove, the other end inside contact has the second arc protuberance coordinating with fixed contact and contact, it is characterized in that: the diameter of axle of described mating groove is φ 30mm-φ 40mm, the outer arc radius of described first arc protuberance is R12mm-R18.5mm, the outer arc radius of described second arc protuberance is R7mm-R20mm, described contact arm cylinder material adopts aluminium 6082-T6.
2. a kind of contact arm structure according to claim 1, is characterized in that: the first arc protuberance of described contact one end is flat face in the side of contact length direction and is the lowermost end of one end of described contact.
3. a kind of contact arm structure according to claim 1, it is characterized in that: be interval with two between the two ends inside described contact and be respectively used to the draw-in groove with each groove phase clamping of two plum blossom sheets, described plum blossom sheet passes through two draw-in grooves of contact between the upper and lower every corresponding attaching.
4. a kind of contact arm structure according to claim 3, is characterized in that: corresponding attaching one contact in the groove of described two plum blossom sheets.
5. a kind of contact arm structure according to claim 1 or 2 or 3 or 4, is characterized in that: the thickness of described contact is 2mm.
6. a kind of contact arm structure according to claim 4, is characterized in that: the number of described contact is 26, and the thickness of contact is 2mm.
7. a kind of contact arm structure according to Claims 2 or 3, is characterized in that: the outside of described contact is provided with four for coordinating the arc groove of attaching with extension spring.
8. a kind of contact arm structure according to claim 1, is characterized in that: described mouth mouth end outer rim is provided with rounding, and the radian diameter of rounding is φ 36mm-φ 45mm.
9. a kind of contact arm structure according to claim 1 and 2, is characterized in that: described mating groove and the cylindrical shell below it form step surface, and below it, cylindrical shell external diameter is φ 38mm-φ 46mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510630966.8A CN105244196B (en) | 2015-09-29 | 2015-09-29 | A kind of contact arm structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510630966.8A CN105244196B (en) | 2015-09-29 | 2015-09-29 | A kind of contact arm structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105244196A true CN105244196A (en) | 2016-01-13 |
| CN105244196B CN105244196B (en) | 2018-06-26 |
Family
ID=55041799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510630966.8A Active CN105244196B (en) | 2015-09-29 | 2015-09-29 | A kind of contact arm structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105244196B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107507709A (en) * | 2016-06-14 | 2017-12-22 | 江苏大全长江电器股份有限公司 | A kind of FC contactor handcarts moving contact |
| CN111799122A (en) * | 2019-04-08 | 2020-10-20 | 河南平芝高压开关有限公司 | Isolating switch and static contact component thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1205529A (en) * | 1997-07-11 | 1999-01-20 | 三菱电机株式会社 | Connector of terminal |
| US20090065333A1 (en) * | 2005-04-18 | 2009-03-12 | Abb Technology Ag | Switch disconnector and switchgear assembly with a switch disconnector |
| CN103325584A (en) * | 2013-04-27 | 2013-09-25 | 厦门华电开关有限公司 | Arc main current resisting contact device and switch device |
| EP2725596A2 (en) * | 2012-09-28 | 2014-04-30 | Eaton Corporation | Contact system |
| CN204130363U (en) * | 2014-10-22 | 2015-01-28 | 厦门华泰利机电有限公司 | A kind of copper contact arm |
| CN205004194U (en) * | 2015-09-29 | 2016-01-27 | 厦门华泰利机电有限公司 | Touch arm structure |
-
2015
- 2015-09-29 CN CN201510630966.8A patent/CN105244196B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1205529A (en) * | 1997-07-11 | 1999-01-20 | 三菱电机株式会社 | Connector of terminal |
| US20090065333A1 (en) * | 2005-04-18 | 2009-03-12 | Abb Technology Ag | Switch disconnector and switchgear assembly with a switch disconnector |
| EP2725596A2 (en) * | 2012-09-28 | 2014-04-30 | Eaton Corporation | Contact system |
| CN103325584A (en) * | 2013-04-27 | 2013-09-25 | 厦门华电开关有限公司 | Arc main current resisting contact device and switch device |
| CN204130363U (en) * | 2014-10-22 | 2015-01-28 | 厦门华泰利机电有限公司 | A kind of copper contact arm |
| CN205004194U (en) * | 2015-09-29 | 2016-01-27 | 厦门华泰利机电有限公司 | Touch arm structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107507709A (en) * | 2016-06-14 | 2017-12-22 | 江苏大全长江电器股份有限公司 | A kind of FC contactor handcarts moving contact |
| CN111799122A (en) * | 2019-04-08 | 2020-10-20 | 河南平芝高压开关有限公司 | Isolating switch and static contact component thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105244196B (en) | 2018-06-26 |
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