CN201708108U - Middle-high voltage falling type fuse - Google Patents
Middle-high voltage falling type fuse Download PDFInfo
- Publication number
- CN201708108U CN201708108U CN2009203518375U CN200920351837U CN201708108U CN 201708108 U CN201708108 U CN 201708108U CN 2009203518375 U CN2009203518375 U CN 2009203518375U CN 200920351837 U CN200920351837 U CN 200920351837U CN 201708108 U CN201708108 U CN 201708108U
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- contact
- fuse
- fixed
- support
- elastic
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Abstract
The utility model discloses a middle-high voltage falling type fuse, which comprises a strut insulator, an upper contact, a fuse carrying support frame, a lower contact, a lug shaft, a fuse tube and a semi-circular contact, wherein the strut insulator is provided with an upper fixed terminal and a lower fixed terminal, the upper contact is fixed on the upper fixed terminal, the fuse carrying support frame is fixed on the lower fixed terminal, the lower contact is fixed on the fuse carrying support frame, the lug shaft is rotatablely arranged on the fuse carrying support frame, the fuse tube is connected with the lug shaft, the semi-circular contact is arranged at the top end of the fuse tube, the bottom end of a fuse in the fuse tube is fixed on the lug shaft, the lower contact comprises two groups of elastic assemblies, and each elastic assembly comprises a contact elastic sheet and a support elastic sheet, the contact elastic sheet is used for being electrically connected with the lug shaft, and the support elastic sheet is used for providing the elastic support for the electrically connected with elastic sheet. The utility model has stable and reliable electric connection performance.
Description
Technical field
The utility model belongs to the fuse technical field, is specifically related to a kind of mesohigh fuse switch.
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 mesohigh fuse switch of a kind of electrical connection properties.
The technical scheme that realizes the utility model purpose is: a kind of mesohigh fuse switch, comprise the post insulator that is provided with fixed terminal and following fixed terminal, be fixed on the upper contact head on the fixed terminal, be fixed on down the fusing carrier support on the fixed terminal, be fixed on the following contact on the fusing carrier support, rotation is arranged on the gudgeon on the fusing carrier support, and the cartridge fuse that is connected with gudgeon is arranged on the semicircle contact on cartridge fuse top; The bottom of the fuse in the cartridge fuse is fixed on the described gudgeon; 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 contact flat spring that resiliency supported is provided that is electrically connected with gudgeon.
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.
In the technique scheme, 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 in the mesohigh fuse switch shown in Figure 1 down contact be fixed on a kind of perspective view on the fusing carrier support;
Fig. 3 is the half sectional view of Fig. 2;
Fig. 4 is a kind of perspective view when contact is in decomposing state down in the mesohigh fuse switch shown in Figure 1;
The another kind of perspective view that Fig. 5 is Fig. 4 when another angle is observed.
Be labeled as shown in the accompanying drawing: post insulator 1, last fixed terminal 11, following fixed terminal 12, upper contact head 2, inlet wire connecting portion 21, inlet wire connecting hole 211, fixed installation portion 22, installing hole 221, shell fragment portion 23, location division 24, semicircle Stamping Area 25, detent 26, positioning boss 27, set feeler 28, reinforcement 29, input terminal 32 cut-offs guide hook 33, back-moving spring 34, outlet terminal 35, gudgeon 36, fuse turnover panel 37, torsion spring 38 carries molten sleeve pipe 39, fusing carrier support 4, following contact 5, elastic parts 51, 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, cartridge fuse 6, fuse 62, rain cover 7, rivet 8.
Embodiment
(embodiment 1)
Fig. 1 to Fig. 5 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 in the mesohigh fuse switch shown in Figure 1 down contact be fixed on a kind of perspective view on the fusing carrier support; Fig. 3 is the half sectional view of Fig. 2; Fig. 4 is a kind of perspective view when contact is in decomposing state down in the mesohigh fuse switch shown in Figure 1; The another kind of perspective view that Fig. 5 is Fig. 4 when another angle is observed.
Present embodiment is a kind of mesohigh fuse switch, see Fig. 1, comprise the post insulator 1 that is provided with fixed terminal 11 and following fixed terminal 12, be fixed on the upper contact head 2 on the fixed terminal 11, rain cover 7, the input terminal that is electrically connected with upper contact head 2 32 and cut-off guide hook 33, be arranged on upper contact head 2 back-moving springs 34 between upper contact head 2 and the rain cover 7, be fixed on down fusing carrier support 4 and outlet terminal 35 on the fixed terminal 12, be fixed on the following contact 5 on the fusing carrier support 4, rotation is arranged on the gudgeon 36 on the fusing carrier support 4, rotation is arranged on the fuse turnover panel 37 on the gudgeon 36 and the torsion spring 38 of reseting elasticity is provided for fuse turnover panel 37, be arranged on the molten sleeve pipe 39 that carries on the gudgeon 36, the bottom is arranged in the cartridge fuse 6 of described year molten sleeve pipe 39, is arranged on the semicircle contact on cartridge fuse 6 tops; The bottom of the fuse 62 in the cartridge fuse 6 is fixed on the described gudgeon 36.
See Fig. 2 to Fig. 5, described down contact 5 comprises two groups of elastic partss 51, and every group of elastic parts 51 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 gudgeon 36.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.
Be equipped with two riveted holes on described every group of elastic parts 51, and elastic parts 51 be fixed on the fusing carrier support 4 by two rivets 8.
Elastic joint part 5112 ends of described contact flat spring 511 are provided with the connecting terminal 5113 that protrudes towards near gudgeon 36 directions, 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.
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. mesohigh fuse switch, comprise the post insulator (1) that is provided with fixed terminal (11) and following fixed terminal (12), be fixed on the upper contact head (2) on the fixed terminal (11), be fixed on down the fusing carrier support (4) on the fixed terminal (12), be fixed on the following contact (5) on the fusing carrier support (4), rotation is arranged on the gudgeon (36) on the fusing carrier support (4), is connected the cartridge fuse (6) of (36) with gudgeon, is arranged on the semicircle contact on cartridge fuse (6) top; The bottom of the fuse (62) in the cartridge fuse (6) is fixed on the described gudgeon (36); It is characterized in that:
Described down contact (5) comprises two groups of elastic partss (51), and every group of elastic parts (51) 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 gudgeon (36).
2. mesohigh fuse switch 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. mesohigh fuse switch 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. mesohigh fuse switch 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. mesohigh fuse switch 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 |
|---|---|---|---|
| CN2009203518375U CN201708108U (en) | 2009-12-24 | 2009-12-24 | Middle-high voltage falling type fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203518375U CN201708108U (en) | 2009-12-24 | 2009-12-24 | Middle-high voltage falling type fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201708108U true CN201708108U (en) | 2011-01-12 |
Family
ID=43445263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203518375U Expired - Fee Related CN201708108U (en) | 2009-12-24 | 2009-12-24 | Middle-high voltage falling type fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201708108U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105845527A (en) * | 2016-04-26 | 2016-08-10 | 宁波鹿鼎电子科技有限公司 | Double-column drop-type fuser |
-
2009
- 2009-12-24 CN CN2009203518375U patent/CN201708108U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105845527A (en) * | 2016-04-26 | 2016-08-10 | 宁波鹿鼎电子科技有限公司 | Double-column drop-type fuser |
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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 |