CN201975274U - Special spring for tulip contact - Google Patents
Special spring for tulip contact Download PDFInfo
- Publication number
- CN201975274U CN201975274U CN2010206700245U CN201020670024U CN201975274U CN 201975274 U CN201975274 U CN 201975274U CN 2010206700245 U CN2010206700245 U CN 2010206700245U CN 201020670024 U CN201020670024 U CN 201020670024U CN 201975274 U CN201975274 U CN 201975274U
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- CN
- China
- Prior art keywords
- spring
- main spring
- utility
- model
- mume flower
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a special spring for a tulip contact. The spring comprises a main spring and a connecting spring, wherein the external diameter of the main spring is larger than that of the connecting spring, a half of the connecting spring is screwed into an internal thread of one end of the main spring, the other end of the main spring is spirally sleeved on the other half of the connecting spring after rotating a plurality of circles in the direction reverse to the winding direction of the spring, and both ends of the main spring are connected into a spring ring. The spring provided by the utility model has the beneficial effects that the magnitude of clasping force of the spring on each contact piece of a tulip contact is uniform, consistent and effective, the structure and the manufacturing are simple, and the installation is convenient.
Description
Technical field
The utility model relates to the high voltage switchgear field, specifically, is that a kind of all contacts of Mume flower contact that can make are held power size uniformity special purpose spring tightly.
Background technology
The connected mode that electrically connects general employing Mume flower contact in the high voltage switchgear realizes, the power of holding tightly of Mume flower contact is had very strict requirement.Existing Mume flower contact generally adopts the hook of one or more buckle spring by both ends of the spring to join end to end to obtain one holds power tightly, but the place of joining end to end of spring joins with hook, and the elastic force at hook place is different with the elastic force at spring body place; And on the other hand, Mume flower contact is arranged in ring by tens contacts and forms, this just causes the power of holding tightly of several contacts of hook junction very little, when big electric current passes through, as easy as rolling off a log herein generation spark, even burning molten phenomenon, this has a strong impact on the fail safe and the reliability of high voltage switchgear.
The utility model content
The purpose of this utility model is to propose a kind of Mume flower contact special purpose spring, by this spring, make the power of holding tightly the size uniformity, effectively of all contacts of Mume flower contact, guarantee Mume flower contact excellent contact under various states, improved the fail safe and the reliability of high voltage switchgear.
The utility model is achieved through the following technical solutions:
A kind of Mume flower contact special purpose spring, comprise that a main spring, connects spring, the external diameter of described main spring is bigger than the external diameter of described connection spring, half of described connection spring screws in the internal thread of described main spring one end, the described main spring other end anti-the coiling direction of spring rotate a few back rotation sets on second half of described connection spring, described main spring two ends connect into a ring spring.
Described main spring turns to by isodiametric spring steel wire is close with the described spring that is connected, and coiling direction unanimity.
The external diameter of described main spring is than the big 1.732D of external diameter (D is the spring steel wire diameter) of described connection spring.
Making principle of the present utility model is: will connect earlier in the internal thread that spring is screwed into main spring one end, connect spring and stay the outside of half length at main spring, then main spring being screwed into this end that connects spring fixes, the other end of main spring anti-after the coiling direction of spring rotates a few, the connection spring that aligning is exposed, utilize the torsion of main spring, the other end of main spring screws in second half that connects spring.Like this, under the effect that connects spring, the two ends of main spring closely connect into a ring spring, and this ring spring makes the power of holding tightly the size uniformity of all contacts of Mume flower contact.
Beneficial effect: the spring in the utility model is to the big or small uniformity of the power of holding tightly of each contact of Mume flower contact, effective; And structure, make all very simple, the convenient installation.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the surface structure schematic diagram of a kind of Mume flower contact special purpose spring of the utility model.
Fig. 2 is the fabrication and installation structural representation of a kind of Mume flower contact special purpose spring of the utility model.
Fig. 3 is the cross-sectional view of an embodiment of a kind of Mume flower contact special purpose spring of the utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated: present embodiment is being to implement under the prerequisite with technical solutions of the utility model; provided detailed execution mode and concrete operating process, but protection range of the present utility model is not limited to following embodiment.
Referring to Fig. 1 and Fig. 2, comprise main spring 1 among the figure, connect spring 2, main spring 1 be connected spring 2 and turn to, and coiling direction unanimity by the equal diameter spring steel wire is close.The external diameter of main spring 1 is than connecting spring 2 big 1.732D (D is the spring steel wire diameter).Fig. 1 for main spring 1 be connected the structural representation that spring 2 closely connects into a ring spring, main spring 1 be connected spring 2 and closely connect, substituted hook-shaped connection of the prior art, the ring spring of ring-type is to the big or small uniformity of the power of holding tightly of each contact of Mume flower contact, effective.
Among Fig. 2, half that connects spring 2 screws in the internal thread of A end of main spring 1, the B end of main spring 1 anti-the coiling direction of spring rotate after a few rotation set from the outside and connecting on second half of spring 2.Like this, under the effect that connects spring 2, the side a and b of main spring 1 closely links to each other, and has just formed an end to end ring spring, big or small uniformity can be provided each contact of Mume flower contact, effectively hold power tightly.
Embodiment:
Referring to Fig. 3, Figure 3 shows that an example of the present utility model, be used for the ZF3B-126 gas-insulated metal-enclosed switchgear Mume flower contact of (being called for short GIS).Comprise main spring 1 among the figure, connect spring 2, contact 3, conductive base 4, conducting rod 5, external shield 6.
In Fig. 3, half of connection spring 2 is screwed in main spring 1 internal thread, and main spring 1 is connected into an end to end ring spring, is enclosed within the Mume flower contact water jacket through after certain pre-stretching then.When conducting rod 5 inserts in the Mume flower contact, open contact 3 upper ends in the Mume flower contact, main spring 1 is further stretched, tension force also further strengthens, and the power of holding tightly on the contact 3 is also strengthened thereupon, in drawing process, main spring 1 head and the tail closely link to each other always, and the external diameter unanimity, thus all consistent to the pressure size of arbitrary contact, effectively.Contact resistance between conducting rod 5 and the contact 3 is also very stable, reliable.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description 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 (3)
1. Mume flower contact special purpose spring, comprise that a main spring, connects spring, it is characterized in that, the external diameter of described main spring is bigger than the external diameter of described connection spring, half of described connection spring screws in the internal thread of described main spring one end, the described main spring other end anti-the coiling direction of spring rotate a few back rotation sets on second half of described connection spring, described main spring two ends connect into a ring spring.
2. a kind of Mume flower contact special purpose spring according to claim 1 is characterized in that, described main spring turns to by isodiametric spring steel wire is close with the described spring that is connected, and coiling direction unanimity.
3. a kind of Mume flower contact special purpose spring according to claim 1 is characterized in that, the external diameter of described main spring is than the big 1.732D of external diameter of described connection spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206700245U CN201975274U (en) | 2010-12-17 | 2010-12-17 | Special spring for tulip contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206700245U CN201975274U (en) | 2010-12-17 | 2010-12-17 | Special spring for tulip contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201975274U true CN201975274U (en) | 2011-09-14 |
Family
ID=44580372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206700245U Expired - Fee Related CN201975274U (en) | 2010-12-17 | 2010-12-17 | Special spring for tulip contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201975274U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820583A (en) * | 2012-08-10 | 2012-12-12 | 许继集团有限公司 | Conductive connector for high voltage electrical equipment |
| CN111326358A (en) * | 2018-12-14 | 2020-06-23 | 河南平芝高压开关有限公司 | Plum-blossom contact finger installation method |
-
2010
- 2010-12-17 CN CN2010206700245U patent/CN201975274U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820583A (en) * | 2012-08-10 | 2012-12-12 | 许继集团有限公司 | Conductive connector for high voltage electrical equipment |
| CN102820583B (en) * | 2012-08-10 | 2015-03-04 | 许继集团有限公司 | Conductive connector for high voltage electrical equipment |
| CN111326358A (en) * | 2018-12-14 | 2020-06-23 | 河南平芝高压开关有限公司 | Plum-blossom contact finger installation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20161217 |