CN201708121U - Lower contact for high voltage drop-out type fuse - Google Patents
Lower contact for high voltage drop-out type fuse Download PDFInfo
- Publication number
- CN201708121U CN201708121U CN2009203518394U CN200920351839U CN201708121U CN 201708121 U CN201708121 U CN 201708121U CN 2009203518394 U CN2009203518394 U CN 2009203518394U CN 200920351839 U CN200920351839 U CN 200920351839U CN 201708121 U CN201708121 U CN 201708121U
- Authority
- CN
- China
- Prior art keywords
- contact
- high voltage
- voltage drop
- flat spring
- out type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Fuses (AREA)
Abstract
The utility model discloses a lower contact for a high voltage drop-out type fuse, which comprises a contact spring for being electrically connected with an externally-connected trunnion and a support spring for providing elastic support for the contact spring. The utility model has stable and reliable electrical connection performance.
Description
Technical field
The utility model belongs to the fuse technical field, is specifically related to a kind of following contact that is used for high voltage drop-out type fuse cutout.
Background technology
Fuse is a kind of protection equipment that the protection electric equipment was avoided the short circuit infringement.Its operation principle is when line short or overload, melt in the fuse fusing carrier is dissolved formation electric arc, and at the drop-down long arc of the effect of elastic body, high arc temperature makes the inner aerogenesis medium of fusing carrier resolve into gas simultaneously, in the fusing carrier pipe, set up very high pressure, free metal gas bleed pipe is made arc extinction outward, thereby cut-off short circuit current, fusing carrier falls under the effect of deadweight simultaneously, forms a visible isolation fracture.The history in existing more than 50 year of the development of China's fuse switch, in early days based on imitative Soviet Union product, the mid-1970s has improved many products from grinding, because of product material and design level are limit, manufacture level improves little, the later stage eighties increases along with introducing with exchange of technology, and product has had tremendous development, has possessed world standard substantially.Because the short circuit interruption ability of fuse improves constantly and good and economic, now accepted and be extensive use of by vast power consumer, nearly 2,000,000 of annual demand.
Fuse switch is one of the most frequently used electrical device of distribution system, also is the power product of distribution system use amount maximum.But because its unit value is lower, structure is simple relatively, all is some small-sized manufacturing firm processings basically in China, and product exists shortcomings such as break performance instability, through-current capability is low, the life-span is short, and is not solved well recent decades.
At present, no matter be domestic or external product, its fusion tube bottom rotating part (copper casting) all adopts the crimping of riveted joint spring leaf with linking of lower end conductor, this crimping mode, and not only contact area is little, also owing to each dispersiveness of closing a floodgate, many reasons such as elastic force reduction that metal fatigue causes, be very easy to cause its contact resistance to increase, the contact point heating, and can further follow the string after the spring leaf heating, cause contact resistance bigger, until burning.
The utility model content
The purpose of this utility model provides the comparatively good following contact that is used for high voltage drop-out type fuse cutout of a kind of electrical connection properties.
The technical scheme that realizes the utility model purpose is: a kind of following contact that is used for high voltage drop-out type fuse cutout comprises that is used for a contact flat spring that is electrically connected with external gudgeon; It is characterized in that: also comprise a support shell fragment that is used to described contact flat spring that resiliency supported is provided.
In the technique scheme, described contact flat spring comprise the installation portion that is used for fixing on the fusing carrier support and with the perpendicular elastic joint part of described installation portion, form
The basic configuration of shape; Described support shell fragment comprise the fixed part that is used for fixing on the fusing carrier support and with the perpendicular resiliency supported portion of described fixed part, form
The basic configuration of shape.
In the technique scheme, the elastic joint part end of described contact flat spring is provided with the connecting terminal of protrusion, and the resiliency supported portion end of described support shell fragment is provided with the support contact of protrusion.
In the technique scheme, the basic configuration of described connecting terminal is the strip boss, and the basic configuration of described support contact is semicircle or cylindrical boss.
In the technique scheme, the resiliency supported portion end of described support shell fragment withstands on the elastic joint part of described contact flat spring.
The utlity model has positive effect: in (1) the utility model, described down contact comprises two groups of elastic partss, and every group of elastic parts comprises that is used for a contact flat spring and a support shell fragment that is used to described electrical connection flexure strip that resiliency supported is provided that is electrically connected with gudgeon; This structure is owing to adopted the support shell fragment to be used to contact flat spring that resiliency supported is provided, effectively guarantee the contact stabilization between contact flat spring and the gudgeon, electrical connection properties under also promptly guaranteeing between contact and the gudgeon, thus guaranteed that fuse possesses stable break performance, through-current capability and useful life.In addition, described support shell fragment also has electric current and passes through as a conductor, so the utility model also has the advantage that improves through-current capability.
Description of drawings
Fig. 1 is a kind of perspective view of the present utility model;
Fig. 2 is a kind of perspective view of contact down shown in Figure 1;
A kind of perspective view when Fig. 3 is in decomposing state for contact under shown in Figure 1;
The another kind of perspective view that Fig. 4 is a down contact shown in Figure 3 when another angle is observed;
Fig. 5 is a kind of perspective view that contact down shown in Figure 1 is in user mode;
Fig. 6 is the half sectional view of Fig. 5.
Be labeled as shown in the accompanying drawing: fusing carrier support 4, following contact 5, contact flat spring 511, installation portion 5111, elastic joint part 5112, connecting terminal 5113 supports shell fragment 512, fixed part 5121, resiliency supported portion 5122, support contact 5123, rivet 8.
Embodiment
(embodiment 1)
Fig. 1 to Fig. 6 has shown a kind of embodiment of the present utility model, and wherein Fig. 1 is a kind of perspective view of the present utility model; Fig. 2 is a kind of perspective view of contact down shown in Figure 1; A kind of perspective view when Fig. 3 is in decomposing state for contact under shown in Figure 1; The another kind of perspective view that Fig. 4 is a down contact shown in Figure 3 when another angle is observed; Fig. 5 is a kind of perspective view that contact down shown in Figure 1 is in user mode; Fig. 6 is the half sectional view of Fig. 5.
Present embodiment is a kind of following contact 51 that is used for high voltage drop-out type fuse cutout, sees Fig. 1 to Fig. 4, comprises that is used for a contact flat spring 511 and a support shell fragment 512 that is used to described contact flat spring 511 that resiliency supported is provided that is electrically connected with external gudgeon.
Described contact flat spring 511 comprise the installation portion 5111 that is used for fixing on fusing carrier support 4 and with the perpendicular elastic joint part 5112 of described installation portion 5111, form
The basic configuration of shape; Described support shell fragment 512 comprise the fixed part 5121 that is used for fixing on fusing carrier support 4 and with the perpendicular resiliency supported portion 5122 of described fixed part 5121, form
The basic configuration of shape.
Elastic joint part 5112 ends of described contact flat spring 511 are provided with the connecting terminal 5113 that protrudes towards lateral direction, and resiliency supported portion 5122 ends of described support shell fragment 512 are provided with the support contact of protruding towards described contact flat spring 5123.
The basic configuration of described connecting terminal 5113 is strip boss, and the basic configuration of described support contact 5123 is semicircle or cylindrical boss, and present embodiment is semicircle boss.Resiliency supported portion 5122 ends of described support shell fragment 512 withstand on the elastic joint part 5112 of described contact flat spring 511.
Resiliency supported portion 5122 ends of described support shell fragment 512 withstand on the elastic joint part 5112 of described contact flat spring 511.
Be equipped with two riveted holes under described every group on the contact 51, and elastic parts 51 be fixed on the fusing carrier support 4 by two rivets 8.
See Fig. 5 and Fig. 6, present embodiment needs at first in use with on the fusing carrier support 4 in self hard-wired fuse switch; Need fix the described contacts 51 down of two groups of present embodiments on each fusing carrier support 4, contact 51 adopts two rivets 8 fixing under every group.
Present embodiment has positive effect: in (1) present embodiment, described down contact comprises two groups of elastic partss, and every group of elastic parts comprises that is used for a contact flat spring and a support shell fragment that is used to described electrical connection flexure strip that resiliency supported is provided that is electrically connected with gudgeon; This structure is owing to adopted the support shell fragment to be used to contact flat spring that resiliency supported is provided, effectively guarantee the contact stabilization between contact flat spring and the gudgeon, electrical connection properties under also promptly guaranteeing between contact and the gudgeon, thus guaranteed that fuse possesses stable break performance, through-current capability and useful life.In addition, described support shell fragment also has electric current and passes through as a conductor, so present embodiment also has the advantage that improves through-current capability.
Obviously, the foregoing description of the present utility model only is for the utility model example clearly is described, and is not to be qualification to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all execution modes.And these belong to conspicuous variation or the change that connotation of the present utility model extends out and still belong to protection range of the present utility model.
Claims (5)
1. following contact that is used for high voltage drop-out type fuse cutout comprises that is used for a contact flat spring (511) that is electrically connected with external gudgeon; It is characterized in that: also comprise a support shell fragment (512) that is used to described contact flat spring (511) that resiliency supported is provided.
2. the following contact that is used for high voltage drop-out type fuse cutout according to claim 1 is characterized in that: described contact flat spring (511) comprise the installation portion (5111) that is used for fixing on fusing carrier support (4) and with the perpendicular elastic joint part (5112) of described installation portion (5111);
Described support shell fragment (512) comprise the fixed part (5121) that is used for fixing on fusing carrier support (4) and with the perpendicular resiliency supported portion (5122) of described fixed part (5121).
3. the following contact that is used for high voltage drop-out type fuse cutout according to claim 2, it is characterized in that: elastic joint part (5112) end of described contact flat spring (511) is provided with the connecting terminal (5113) of protrusion, and resiliency supported portion (5122) end of described support shell fragment (512) is provided with the support contact (5123) of protrusion.
4. the following contact that is used for high voltage drop-out type fuse cutout according to claim 3 is characterized in that: the basic configuration of described connecting terminal (5113) is the strip boss, and the basic configuration of described support contact (5123) is semicircle or cylindrical boss.
5. the following contact that is used for high voltage drop-out type fuse cutout according to claim 3 is characterized in that: resiliency supported portion (5122) end of described support shell fragment (512) withstands on the elastic joint part (5112) of described contact flat spring (511).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203518394U CN201708121U (en) | 2009-12-24 | 2009-12-24 | Lower contact for high voltage drop-out type fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203518394U CN201708121U (en) | 2009-12-24 | 2009-12-24 | Lower contact for high voltage drop-out type fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201708121U true CN201708121U (en) | 2011-01-12 |
Family
ID=43445276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203518394U Expired - Fee Related CN201708121U (en) | 2009-12-24 | 2009-12-24 | Lower contact for high voltage drop-out type fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201708121U (en) |
-
2009
- 2009-12-24 CN CN2009203518394U patent/CN201708121U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201877386U (en) | 12kV drop-out fuse | |
| CN204117927U (en) | A kind of structure-improved of high voltage isolator | |
| CN201708121U (en) | Lower contact for high voltage drop-out type fuse | |
| CN116131037B (en) | Explosion-proof type power adapter | |
| CN201708108U (en) | Middle-high voltage falling type fuse | |
| CN201638780U (en) | Drop type fuse | |
| CN101783271A (en) | High-voltage and medium-voltage drop-out type fuse | |
| CN201655726U (en) | Upper contact for high voltage dropping type fuse | |
| CN202332741U (en) | Sliding contact structure realizing automatic adjustment on pressure of contact for low-pressure contactor | |
| CN201708102U (en) | Wiring reinforcement plate used in drop type fuse | |
| CN101783272A (en) | Drop-out fuse | |
| CN201638765U (en) | Rain cover for high-voltage fuse | |
| CN203871273U (en) | Over-current elastic sheet assembly structure of temperature controller | |
| CN202513104U (en) | Drop-out fuse | |
| CN201638773U (en) | Fuse-carrier guiding pull-cutting load device | |
| CN205752357U (en) | Lithium battery overload protection pole lug | |
| CN201655723U (en) | Fuse carrier bracket | |
| CN102222835A (en) | Method of flexible force application connection for elastic contact pair of electric connector | |
| CN206364230U (en) | A kind of grid electrical connector | |
| CN202534610U (en) | Improved drop-out fuse | |
| CN201017835Y (en) | Novel drop type fuse | |
| CN201616402U (en) | Trunnion used in drop-out type fuse cutout | |
| CN202513117U (en) | Drop-out fuse | |
| CN2911938Y (en) | Active contactor of small circuit breaker | |
| CN205085527U (en) | Carbon dioxide welding is with electrically conductive mouth |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20121224 |