CN110176367B - Double-breakpoint change-over switch and moving contact module thereof - Google Patents
Double-breakpoint change-over switch and moving contact module thereof Download PDFInfo
- Publication number
- CN110176367B CN110176367B CN201910403228.8A CN201910403228A CN110176367B CN 110176367 B CN110176367 B CN 110176367B CN 201910403228 A CN201910403228 A CN 201910403228A CN 110176367 B CN110176367 B CN 110176367B
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- China
- Prior art keywords
- moving contact
- insulating
- insulating shaft
- shaft sleeve
- central hole
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/20—Bridging contacts
- H01H1/2041—Rotating bridge
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
- H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
Abstract
The invention discloses a double-breakpoint change-over switch and a moving contact module thereof, wherein the moving contact module comprises a moving contact component and two insulating shaft sleeves which are oppositely arranged and penetrate through the moving contact component to be connected; the moving contact component comprises at least two moving contacts which are sequentially superposed, an insulating partition plate arranged between every two adjacent moving contacts and a spring component arranged in each moving contact; the moving contact and the insulating partition plate are respectively provided with a first central hole and a second central hole for an insulating shaft sleeve to penetrate into, and the spring assembly is positioned between the wall surface of the first central hole and the peripheral side surface of the insulating shaft sleeve, so that the insulating shaft sleeve is elastically connected with the moving contact. The moving contact module is compact in structure and small in size; the spring assembly is arranged between the insulating shaft sleeve and the moving contact, so that the insulating shaft sleeve and the moving contact are elastically connected to realize an over-travel function and a contact pressure value after the switch is switched on; the spring assembly is arranged so that the movable contact can move along with the stress, and has a balance compensation function.
Description
Technical Field
The invention relates to the technical field of automatic change-over switches, in particular to a double-breakpoint change-over switch and a moving contact module thereof.
Background
The automatic change-over switch electric appliance is a common low-voltage electric appliance, is commonly used in important power distribution occasions (such as power supply systems in hospitals, building fire control, rail transit, data communication fields and the like), is used for switching two paths of power supplies, and is quickly switched to a standby power supply when a common power supply fails in the power supply process, so that the normal power supply of a load end is ensured.
In the existing automatic transfer switching equipment, most of the contact parts of the moving contacts are single-breakpoint structures formed by welding soft copper stranded wires and conducting strips, and when the arc is broken, the arc cannot be broken into two parts, so that the energy of the arc is dispersed, and the ablation of silver points is reduced. At present, the double-breakpoint technology is only basically used on a circuit breaker, is rarely applied to a change-over switch and can be implemented and achieve the expected effect.
Disclosure of Invention
The invention aims to solve the technical problem of providing a moving contact module of a double-breakpoint change-over switch with compact structure, small volume and good dynamic balance and a double-breakpoint change-over switch with the moving contact module.
The technical scheme adopted by the invention for solving the technical problems is as follows: the moving contact module of the double-breakpoint change-over switch comprises a moving contact component and two insulating shaft sleeves which are oppositely arranged and penetrate into the moving contact component to be connected, wherein the insulating shaft sleeves can rotate relative to the moving contact component;
the moving contact component comprises at least two moving contacts which are sequentially stacked and insulated, and a spring component arranged in each moving contact; the moving contact is provided with a first central hole for the insulating shaft sleeve to penetrate into, and the spring assembly is positioned between the wall surface of the first central hole and the peripheral side surface of the insulating shaft sleeve, so that the insulating shaft sleeve is elastically connected with the moving contact.
Preferably, two first protruding portions which are centrosymmetric are arranged on the inner wall of the first center hole, two second protruding portions which are centrosymmetric and extend along the axial direction of the insulating shaft sleeve are arranged on the outer peripheral side surface of the insulating shaft sleeve, and the connecting line of the two first protruding portions is perpendicular to the connecting line of the two second protruding portions;
the spring assembly comprises four springs which are respectively arranged between the first boss and the second boss.
Preferably, the centers of the two first convex parts and the first central hole are located on the same plane; the two second protruding parts and the circle center of the insulating shaft sleeve are located on the same plane.
Preferably, the moving contact assembly further comprises an insulating partition plate arranged between every two adjacent moving contacts; and a second central hole for the insulating shaft sleeve to penetrate into is formed in the insulating partition plate.
Preferably, the second central hole is matched with the periphery of the insulating shaft sleeve; and the insulating partition plate is also provided with two through holes which are centrosymmetric and are used for the second bulge to penetrate into, and the through holes are communicated with the second central hole.
Preferably, the second protruding part is internally provided with a connecting hole penetrating through two opposite ends of the second protruding part; and the connecting holes of the two insulating shaft sleeves are communicated relatively, and the connecting assembly is used for connecting the two insulating shaft sleeves in a penetrating manner.
Preferably, the moving contact module further comprises a connecting component which is arranged in the connecting hole in a penetrating manner and connects the two insulating shaft sleeves into a whole.
Preferably, the movable contact comprises a central portion, two movable contact rods extending outwards on two opposite sides of the central portion, and a contact portion arranged on each movable contact rod; the first central aperture is disposed in the central portion through opposing surfaces of the central portion.
Preferably, the insulating shaft sleeve comprises an axial section and an end plate formed on one end face of the axial section; a square hole matched with the square shaft is formed in the middle of the axial section;
the two insulating shaft sleeves penetrate into the moving contact component in an axial section, and end plates of the two insulating shaft sleeves are respectively matched with two opposite sides of the moving contact component.
The invention also provides a double-breakpoint change-over switch which comprises the moving contact module.
The moving contact module is compact in structure and small in size; the spring assembly is arranged between the insulating shaft sleeve and the moving contact, so that the insulating shaft sleeve and the moving contact are elastically connected to realize an over-travel function and a contact pressure value after the switch is switched on; the spring assembly is arranged so that the movable contact can move along with the stress, and has a balance compensation function.
Because the spring assembly is arranged in the central part of the movable contact and is far away from the contact part of the movable contact, the spring assembly cannot be elastically attenuated due to high-temperature transmission in use, and the short-circuit current tolerance of the switch can be improved.
The moving contact module has good structural symmetry, so that the moving balance performance is better.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a schematic structural diagram of a movable contact module according to an embodiment of the present invention;
fig. 2 is an exploded schematic view of a movable contact module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a movable contact in the movable contact module according to an embodiment of the present invention;
fig. 4 is a schematic view of a matching structure of a movable contact and an insulating bushing in the movable contact module according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an insulating partition board in the movable contact module according to an embodiment of the present invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the movable contact module of the double-breakpoint switch according to an embodiment of the present invention includes a movable contact assembly 10 and two insulating bushings 20; two insulating bushings 20 are oppositely arranged and penetrate into the movable contact assembly 10 to be connected into a whole.
The movable contact assembly 10 includes at least two movable contacts 11 stacked in sequence and insulated from each other, and a spring assembly 12 disposed in each movable contact 11. The number of the spring assemblies 12 is the same as that of the movable contacts 11. The moving contact 11 is made of a conductive material.
Each movable contact 11 is provided with a first central hole 110 for the insulating bushing 20 to pass through. The first central bore 110 has a diameter greater than the outer diameter of the insulative bushing 20. The spring assembly 12 is located between the wall surface of the first central hole 110 and the outer peripheral side surface of the insulating bushing 20, so that the insulating bushing 20 and the movable contact 11 are elastically connected, and the function of keeping the force balance of the movable contact 11 in a free state is achieved.
As shown in fig. 3, two first protruding portions 115 with central symmetry are disposed on the inner wall of the first central hole 110 of the movable contact 11, and the centers of the two first protruding portions 115 and the first central hole 110 are located on the same plane. The opposite end surfaces of the two first protrusions 115 are arc-shaped surfaces to be fitted with the outer circumferential side surface of the insulative bushing 20.
Specifically, each of the movable contacts 11 includes a central portion 111, two movable contact bars 112 extending outward on opposite sides of the central portion 111, and a contact portion 113 provided on each of the movable contact bars 112. The first center hole 110 is provided on the center portion 111 to penetrate through opposite surfaces of the center portion 111, and the two movable contact levers 112 are positioned on opposite sides of the center portion 111 and are aligned. The contact portion 113 of each movable contact rod 112 includes two silver points, which are respectively disposed on two sides of the end portion of the movable contact rod 112, and are used for contacting and conducting with the fixed contact module in the double-breakpoint transfer switch.
As shown in fig. 2 and 4, two second protruding portions 23 with central symmetry are disposed on the outer peripheral side surface of the insulating sleeve 20, and the second protruding portions 23 extend in the axial direction of the insulating sleeve 20 and penetrate into the first central hole 110 of the movable contact 11 along with the insulating sleeve 20. The two second protruding parts 23 are located on the same plane with the center of the insulating bush 20.
The line connecting the two second convex portions 23 is perpendicular to the line connecting the two first convex portions 115. After the insulating bushing 20 penetrates into the first central hole 110 of the movable contact 11, an annular space is formed between the outer periphery of the insulating bushing 20 and the inner periphery of the first central hole 110, and the first protruding portion 115 and the second protruding portion 23 are arranged to divide the annular space into four arc-shaped spaces which are separated for accommodating the spring assembly 12.
Corresponding to the four arc-shaped spaces, the spring assembly 12 includes four springs 121, and the four springs 121 are respectively disposed in the four arc-shaped spaces, so that the four springs 121 are annularly distributed. In each arc-shaped space, the spring 121 is located between the first boss 115 and the second boss 23, and both ends of the spring 121 abut against the side surfaces of the first boss 115 and the second boss 23, respectively.
The insulating bush 20 may further include an axial section 21, an end plate 22 formed on an end surface of one end of the axial section 21; the middle part of the axial section 21 is provided with a square hole matched with the square shaft. The outer diameter of the axial section 21 is smaller than the diameter of the end plate 22, the second protruding portion 23 is convexly disposed on the axial section 21, and the side of the second protruding portion 23 facing away from the axial section 21 may correspond to and be aligned with the outer periphery of the end plate 22.
The axial length of the two insulating sleeves 20 after being oppositely connected is larger than or equal to the thickness of the movable contact assembly 10. In the moving contact module, two insulating shaft sleeves 20 penetrate into the moving contact assembly 10 through axial sections 21, end plates 22 of the two insulating shaft sleeves 20 are respectively matched with two opposite sides of the moving contact assembly 10, and the moving contact module also plays a limiting role on spring assemblies 12 in moving contacts 11 on two sides of the moving contact assembly 10, so that the spring assemblies 12 are prevented from being separated.
Further, the movable contact assembly 10 further includes an insulating partition 13 disposed between each two adjacent movable contacts 11, so as to isolate the two adjacent movable contacts 11. The number of the movable contacts 11 is represented by N (N is an integer greater than or equal to 2), the number of the partition plates 13 is N-1, and the spring assemblies 12 are also N groups.
As shown in fig. 2 and 5, to facilitate the penetration of the insulating bushing 20, the insulating spacer 13 is provided with a second central hole 130 for the penetrating of the insulating bushing 20, so that the plurality of movable contacts 11 and the plurality of insulating spacers 13 are connected in series through the insulating bushing 20.
The second central hole 130 is matched with the outer periphery of the insulating shaft sleeve 20, and the inner diameter of the second central hole is corresponding to the outer diameter of the shaft center section 21 of the insulating shaft sleeve 20, so that the second central hole is smaller than the inner diameter of the first central hole 110, and thus when the insulating partition plate 13 is stacked between two adjacent movable contacts 11, the second central hole also plays a role in shielding and limiting the spring assembly 12 therein, and the spring assembly 12 is prevented from being separated.
Two through holes 131 which are centrosymmetric are also arranged on the insulating partition plate 13 corresponding to the second bulge 23 on the insulating shaft sleeve 20, and the through holes 131 are communicated with the second central hole 130 for the second bulge 23 to penetrate into.
As shown in fig. 2, in order to realize the relative connection between the two insulating bushings 20, the movable contact module of the present invention further includes a connecting assembly penetrating through the two insulating bushings 20 and connecting the two insulating bushings 20 into a whole. The connecting assembly may include a mating bolt 41 and nut 42. The bolt 41 has a certain length, and penetrates through one side of the insulating shaft sleeve 20 and can penetrate through the two insulating shaft sleeves 20 and extend out of one side of the other insulating shaft sleeve 20, and a nut is screwed on the bolt 41 at the side to firmly connect the two insulating shaft sleeves 20 and also connect the plurality of movable contacts 11 between the two insulating shaft sleeves 20 into an integral movable contact assembly 10.
In this embodiment, each second protruding portion 23 of each insulating sleeve 20 has a connecting hole 24 penetrating through two opposite ends of the second protruding portion 23, and the connecting hole 24 further penetrates through the end plate 22, so that each insulating sleeve 20 has two connecting holes 24. The connecting holes 24 of the two insulating shaft sleeves 20 are oppositely communicated, and a connecting assembly is arranged in the connecting holes to connect the two insulating shaft sleeves 20.
The two insulating bushings 20 are integrally butted at the first central hole 110 of the moving contact assembly 10, and the opposite ends of the two insulating bushings 20 can respectively protrude out of the surfaces of the two moving contacts 11 at the two opposite sides of the moving contact assembly 10. The insulating shaft sleeves 20 are further provided with central through holes penetrating through the opposite ends thereof, and the central through holes (shown as square holes in fig. 1 and 2) of the two insulating shaft sleeves 20 are communicated to form shaft holes of the movable contact module for the rotating shaft to penetrate through. In the double-breakpoint change-over switch, the movable contact module is arranged in the shell through the rotating shaft and can rotate relative to the shell.
The double-breakpoint change-over switch comprises the moving contact module, a static contact assembly, a shell and other conventional structures, wherein the static contact assembly and the moving contact module are both arranged in the shell, and the matched arrangement in the shell and the like can be realized by adopting the prior art.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A moving contact module of a double-breakpoint change-over switch is characterized by comprising a moving contact component (10) and two insulating shaft sleeves (20) which are oppositely arranged and penetrate through the moving contact component (10) to be connected;
the moving contact component (10) comprises at least two moving contacts (11) which are sequentially stacked and insulated, and a spring component (12) arranged in each moving contact (11); the moving contact is provided with a first central hole (110) for the insulating shaft sleeve (20) to penetrate into, and the spring assembly (12) is positioned between the wall surface of the first central hole (110) and the peripheral side surface of the insulating shaft sleeve (20) so that the insulating shaft sleeve (20) is elastically connected with the moving contact (11);
the inner wall of the first central hole (110) is provided with two first protruding parts (115) which are centrosymmetric, the outer peripheral side surface of the insulating shaft sleeve (20) is provided with two second protruding parts (23) which are centrosymmetric and extend along the axial direction of the insulating shaft sleeve (20), and the connecting line of the two first protruding parts (115) is vertical to the connecting line of the two second protruding parts (23);
the spring assembly (12) comprises four springs (121) respectively arranged between the first boss (115) and the second boss (23);
the insulating shaft sleeve (20) comprises an axial section (21) and an end plate (22) formed on one end face of the axial section (21); a square hole matched with the square shaft is formed in the middle of the axial section (21);
two insulating shaft sleeves (20) penetrate into the moving contact component (10) in an axial section (21), and end plates (22) of the two insulating shaft sleeves (20) are respectively matched on two opposite sides of the moving contact component (10) so as to limit the spring component (12) in the moving contact (11) on two sides of the moving contact component (10) to prevent the spring component (12) from falling out;
the moving contact assembly (10) also comprises an insulating partition plate (13) arranged between every two adjacent moving contacts (11); the insulating partition plate (13) is provided with a second central hole (130) for the insulating shaft sleeve (20) to penetrate into;
the second central hole (130) is matched with the periphery of the insulating shaft sleeve (20), and the inner diameter of the second central hole corresponds to the outer diameter of the axial section (21) of the insulating shaft sleeve (20); two through holes (131) which are centrosymmetric and are used for the second protruding part (23) to penetrate are further formed in the insulating partition plate (13), and the through holes (131) are communicated with the second central hole (130).
2. The movable contact module according to claim 1, wherein the centers of the two first protrusions (115) and the first central hole (110) are located on the same plane; the centers of the two second convex parts (23) and the insulating shaft sleeve (20) are positioned on the same plane.
3. The movable contact module according to claim 1, wherein the second protrusion (23) has a connecting hole (24) formed therethrough at opposite ends thereof; the connecting holes (24) of the two insulating shaft sleeves (20) are communicated oppositely, and the connecting assembly is used for connecting the two insulating shaft sleeves (20) in a penetrating mode.
4. The movable contact module according to claim 3, further comprising a connecting member inserted into the connecting hole (24) to connect the two insulating bushings (20) together.
5. A movable contact module according to any one of claims 1 to 4, wherein the movable contact (11) comprises a central portion (111), two movable contact bars (112) extending outwardly on opposite sides of the central portion (111), and a contact portion (113) provided on each of the movable contact bars (112); the first center hole (110) is provided on the center portion (111) to penetrate through opposite surfaces of the center portion (111).
6. A double-break-point change-over switch, characterized in that it comprises a movable contact module according to any of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910403228.8A CN110176367B (en) | 2019-05-15 | 2019-05-15 | Double-breakpoint change-over switch and moving contact module thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910403228.8A CN110176367B (en) | 2019-05-15 | 2019-05-15 | Double-breakpoint change-over switch and moving contact module thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110176367A CN110176367A (en) | 2019-08-27 |
| CN110176367B true CN110176367B (en) | 2021-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910403228.8A Active CN110176367B (en) | 2019-05-15 | 2019-05-15 | Double-breakpoint change-over switch and moving contact module thereof |
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| Country | Link |
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| CN (1) | CN110176367B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111769016B (en) * | 2020-06-06 | 2022-07-05 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Multi-contact finger moving contact and contact system of molded case circuit breaker |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006016273A1 (en) * | 2006-03-31 | 2007-10-04 | Siemens Ag | Low-voltage circuit-breaker for e.g. electrical network, has three contact pairs connected in series for each phase and released simultaneously during short- circuit, where contact pairs comprise contacts arranged at contact arms |
| CN101373671A (en) * | 2007-08-21 | 2009-02-25 | 西门子公司 | Switching device with a switching shaft for mounting a rotary contact link and multipole switching device arrangement |
| CN103050344A (en) * | 2011-10-13 | 2013-04-17 | 上海电科电器科技有限公司 | Rotation double-breakpoint movable contact module |
| CN106531583A (en) * | 2016-12-12 | 2017-03-22 | 上海电器股份有限公司人民电器厂 | Contact system of circuit breaker |
| CN108766805A (en) * | 2018-05-31 | 2018-11-06 | 深圳市泰永电气科技有限公司 | The double breaking points moving contact component and contact apparatus of automatic transfer switching electric appliance |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2703824B1 (en) * | 1993-04-07 | 1995-05-12 | Merlin Gerin | Multipolar limiter circuit breaker with electrodynamic repulsion. |
| JP4356267B2 (en) * | 2001-05-28 | 2009-11-04 | 富士電機機器制御株式会社 | Circuit breaker for wiring |
| CN1971802A (en) * | 2006-11-30 | 2007-05-30 | Tcl低压电器(无锡)有限公司 | Transient stability contactor system of current-limiting breaker |
| DE102011003131A1 (en) * | 2011-01-25 | 2012-07-26 | Siemens Aktiengesellschaft | Electric switch |
| CN103311064B (en) * | 2013-06-26 | 2015-07-15 | 大全集团有限公司 | Dual-breakpoint moving contact system of moulded-case circuit breaker |
| CN104465254A (en) * | 2013-09-24 | 2015-03-25 | 上海电科电器科技有限公司 | Rotary double-breakpoint contact |
| CN105428098B (en) * | 2015-12-10 | 2018-12-11 | 二一三电器(上海)有限公司 | Double breaking points trigger device |
-
2019
- 2019-05-15 CN CN201910403228.8A patent/CN110176367B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006016273A1 (en) * | 2006-03-31 | 2007-10-04 | Siemens Ag | Low-voltage circuit-breaker for e.g. electrical network, has three contact pairs connected in series for each phase and released simultaneously during short- circuit, where contact pairs comprise contacts arranged at contact arms |
| CN101373671A (en) * | 2007-08-21 | 2009-02-25 | 西门子公司 | Switching device with a switching shaft for mounting a rotary contact link and multipole switching device arrangement |
| CN103050344A (en) * | 2011-10-13 | 2013-04-17 | 上海电科电器科技有限公司 | Rotation double-breakpoint movable contact module |
| CN106531583A (en) * | 2016-12-12 | 2017-03-22 | 上海电器股份有限公司人民电器厂 | Contact system of circuit breaker |
| CN108766805A (en) * | 2018-05-31 | 2018-11-06 | 深圳市泰永电气科技有限公司 | The double breaking points moving contact component and contact apparatus of automatic transfer switching electric appliance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110176367A (en) | 2019-08-27 |
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