CN207896027U - Pole and its process units - Google Patents
Pole and its process units Download PDFInfo
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- CN207896027U CN207896027U CN201721362288.2U CN201721362288U CN207896027U CN 207896027 U CN207896027 U CN 207896027U CN 201721362288 U CN201721362288 U CN 201721362288U CN 207896027 U CN207896027 U CN 207896027U
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- pole
- protective cover
- end cap
- process units
- moved end
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Abstract
The utility model is related to power switch technical fields, it is proposed a kind of pole and its process units, pole includes pole shell and vacuum interrupter, and the vacuum interrupter includes moved end end cap, and the moved end end cap lateral surface is towards the cavity for corresponding to core pulling under mold in the pole；It is also set up outside the moved end end cap there are one protective cover, the protective cover covers the moved end end cap lateral surface.Protective cover is arranged in the pole of the utility model embodiment outside the end cap of moved end, and protection movable end of vacuum arc extinguishing chamber end cap can bear the pressure of injection molding, and straight forming plastics pole ensures the reliability of product quality.
Description
Technical field
The utility model is related to electrical equipment technical field more particularly to a kind of poles and its process units.
Background technology
Currently, epoxy resin pole using more and more, is mainly used in breaker, on-load switch and other solid
Body insulated switch.Epoxide resin material produce pole period is longer, cost is also relatively high.Now in order to reduce cost,
Improve the requirement of delivery efficiency and environmental protection, a kind of demand is to utilize recyclable environment-protecting thermoplastic material, to be molded
Plastics pole.
Pole is in forming process, and vacuum interrupter is frequently accompanied by by briquetting pressure, Material shrinkage stress, this just makes
At the welding of end (end refers to the static side lid and moved end lid of vacuum interrupter) end cap and ceramic metallized layer of vacuum interrupter
Place is easy to happen displacement and it is made micro- gas leakage risk occur, electric property is caused to fail.
Especially vacuum extinction outdoor face is encapsulated with environment-friendly type plastic, and injection molding process reaches because it is molded stress
50-150MPa makes vacuum interrupter have the maximum probability risk of gas leakage.
Above- mentioned information disclosed in the background technology part is only used for reinforcing the understanding to the background of the utility model, therefore
It may include the information not constituted to the prior art known to persons of ordinary skill in the art.
Utility model content
The purpose of the utility model is to overcome at least one deficiencies of the above-mentioned prior art, and height can be born by providing one kind
The pole and its process units of pressure.
One side according to the present utility model provides a kind of pole, including pole shell and vacuum interrupter, institute
It includes moved end end cap to state vacuum interrupter, the moved end end cap lateral surface towards in the pole correspond to mold under core pulling
Cavity；Protective cover there are one being also set up outside the moved end end cap, the protective cover covers the moved end end cap lateral surface, with institute
It states protective cover and lateral stress part outside the moved end end cap is passed into the vacuum interrupter main body.
A kind of exemplary embodiment according to the present utility model, the moved end end cap outer diameter are less than the vacuum interrupter
Outer diameter, the protective cover are equal to or less than the outer diameter of the vacuum interrupter.
A kind of exemplary embodiment according to the present utility model, the protective cover are set as the shape with the moved end end cap
Compatible lid or cup-shaped or similar cup-shaped or tubular.
A kind of exemplary embodiment according to the present utility model, the protective cover lateral surface are provided with ring type seal, institute
It is elastic material to state sealing ring material.
A kind of exemplary embodiment according to the present utility model, the protective cover lateral surface are provided with ring type seal, institute
It is nonmetallic materials to state sealing ring material.
The another aspect of the utility model embodiment provides a kind of process units of pole, for producing as previously described
Pole, the process units includes mold, and the mold has the die cavity for matching the pole shape, the life
It includes a lower core pulling to produce device, and the lower core pulling is located on the outside of the protective cover.
A kind of exemplary embodiment according to the present utility model is bullet between the lower core pulling and the protective cover lateral surface
Property sealing ring.
A kind of exemplary embodiment according to the present utility model, the protective cover and the lower core pulling are all detachable part
Part.
A kind of exemplary embodiment according to the present utility model, the mold are injection mold or pressure pouring mold.
As shown from the above technical solution, the utility model has at least one of following advantages and good effect：
Protective cover is arranged in the pole and its process units of the utility model outside the end cap of moved end, protects vacuum extinction
Room moved end end cap can bear the pressure that injection molding reaches 200MPa, and straight forming plastics pole ensures product matter
The reliability of amount.
When can effectively avoid the molding of moved end end cap by extraneous pressure, end cap deformation in moved end causes gas leakage, makes electrical
The problem of performance and mechanical failure；Another aspect avoids using being shaped insulation fabric part, then insulation fabric part is sleeved on
Production method on vacuum interrupter will not have air gap or vacuum gap, electric property will not be caused to fail.
Description of the drawings
Its example embodiment is described in detail by referring to accompanying drawing, above and other feature and advantage of the utility model will
It becomes readily apparent from.
Fig. 1 is the pole substructure schematic diagram of one embodiment of the utility model；
Fig. 2 is the partial enlargement structural representation of the A meanings part in Fig. 1.
The reference numerals are as follows for main element in figure：
1, vacuum interrupter；2, pole shell；3, moved end end cap；4, protective cover；5, sealing ring；6, lower core pulling.
Specific implementation mode
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that this practicality is new
Type will be full and complete, and the design of example embodiment is comprehensively communicated to those skilled in the art.It is identical in figure
Reference numeral indicates same or similar structure, thus will omit their detailed description.
The utility model embodiment is related to a kind of pole, including vacuum interrupter 1 and pole shell 2, vacuum extinction
Room is mainly made of the part such as airtight insulation system, conducting system, shielding harness, contact, bellows.Airtight insulation system is by glass
Airtight insulation crust, moved end end cap 3, static side end cap made of glass or ceramics, corrugated stainless steel tubing composition.In order to ensure glass,
There is good air-tightness between ceramics and metal, other than having stringent operating procedure when sealing-in, also requires material itself
The small as possible and internal discharge quantity of gas permeability is restricted to minimum.The effect of corrugated stainless steel tubing can not only be by vacuum extinction chamber interior
Vacuum state and the atmospheric condition of outside keep apart, and moving contact can be made to be transported within the limits prescribed together with moving conductive rod
It is dynamic, to complete the closure and breaking operation of vacuum switch.Conducting system mainly by static conductive rod, static contact, moving conductive rod, dynamic touch
Head is constituted.Shielding harness is mainly made of shielding cylinder, shielding case and other parts.
In the utility model embodiment, pole is configured in 3 lateral surface of moved end end cap for housing core pulling 6 under mold
A cavity, and end cap 3 lateral surface in moved end, towards the cavity for core pulling under mold 6, cavity forms gradually expanded form from inside to outside
Shape, depanning after being molded in order to lower core pulling.It is also set up outside moved end end cap 3 there are one protective cover 4, protective cover 4 covers moved end end cap 3
End cap 3 outer lateral stress part in moved end is passed to the insulation crust of vacuum interrupter main body with protective cover 4 by lateral surface.Vacuum is gone out
The structure design of arc chamber moved end lid protective cover, protection movable end of vacuum arc extinguishing chamber end cap 3 can bear injection molding and reach
The pressure of 200MPa, straight forming plastics pole, ensures the reliability of product quality.
A kind of exemplary embodiment according to the present utility model, end cap protective cover 4 can select metal material, can also select
With plastics, it will be understood by those skilled in the art that 4 material of protective cover should have certain intensity requirement, protective cover 4 best
It can bear during injection molding at least pressure of 200MPa.
A kind of exemplary embodiment according to the present utility model, 3 outer diameter of moved end end cap are less than the vacuum interrupter
Outer diameter, the protective cover 4 be equal to or less than the vacuum interrupter outer diameter.Outside movable end of vacuum arc extinguishing chamber and the end cap of static side
Outer diameter between diameter and ceramics is consistent, is conducive to plastics in the consistency of thickness of vacuum interrupter appearance, is mutated, makes without local thickness
Injected plastics material mobilization force uniform force, is unlikely to vacuum interrupter local pressure.
A kind of exemplary embodiment according to the present utility model, the protective cover 4 are set as the shape with the moved end end cap 3
The compatible lid of shape or cup-shaped or similar cup-shaped.4 inner face of protective cover can with made of 1 ceramics of vacuum interrupter it is airtight absolutely
Edge shell is in direct contact, and briquetting pressure is transferred to insulation crust, and avoids 3 direct pressure-bearing of moved end end cap.4 outer end face of protective cover
Thickness also may be selected to be a plane, face thickness selection in outer end is more than lateral thickness, to obtain enough support strengths.
Another embodiment, protective cover 4 may also be configured to ring-type, are equivalent to protective cover 4 and are no longer arranged lateral surface, and shape
At a kind of cylindrical shape, 4 inner face of protective cover can be in direct contact with airtight insulation crust made of 1 ceramics of vacuum interrupter, will
Briquetting pressure is transferred to insulation crust, and avoids 3 direct pressure-bearing of moved end end cap.
A kind of exemplary embodiment according to the present utility model, 4 lateral surface of the protective cover are provided with ring type seal, institute
It is elastic material, such as rubber, silica gel to state sealing ring material.Contact between the protective cover 4 and mold of vacuum interrupter end cap
Face is used as sealing surface using elastomer sealing ring 5, it is ensured that vacuum interrupter will not cause stress concentration in the tolerance of length direction.
Also, the cooperation of the protective cover 4 of vacuum interrupter end cap and core pulling 6 under mold adjusts vacuum using elastomer material seals circle 5
Sealing between arc-chutes end cap protective cover 4 and mold.It prevents plastics from entering on the end cap of vacuum interrupter, causes to be become by pressure
Shape.The material of elastomer sealing ring 5 may be selected to be nonmetallic materials, such as rubber, plastics, ceramics, fiber, asbestos and soft graphite
Deng the sealing material for being suitable for manufacturing because there is good flexible or elasticity.
The another aspect of the utility model embodiment provides a kind of process units of pole, for producing as previously described
Pole, process units includes injection mold or pressure pouring mold, and the matching pole is formed in mold
The die cavity of shape, process units include a lower core pulling 6, and lower core pulling 6 is located at 4 outside of protective cover.Lower core pulling 6 corresponds to vacuum extinction
The guide sleeve and moving conductive rod of room 1 reserve empty slot, and the inner face of lower core pulling 6 is contacted with 4 outside of protective cover by sealing ring.
In the process units of the utility model embodiment, the encapsulating material of pole (Fig. 1) may be selected to be environment-friendly type heat
Thermoplastic plastic replaces epoxide resin material, and high pressure (being not more than 200MPa pressure) directly injection molding process can be used to replace
It is stirred under vacuum and low pressure (being less than 50MPa pressure) is injection moulded.
The selection plain edition vacuum interrupter of the utility model embodiment, using the direct injection molding insulation system of high pressure
Part, that is, plastics pole.The cap material of vacuum interrupter can be stainless steel or copper material.
A kind of exemplary embodiment according to the present utility model, the protective cover 4 and the lower core pulling 6 are all detachable part
Part.Vacuum interrupter protective cover 4 can stay on plastics pole, become a component of product, can also take out,
Purpose, which is used as, protects vacuum interrupter bottom end cover 3 not to be damaged in forming process.
Protective cover is arranged in the pole and its process units of the utility model outside the end cap of moved end, protects vacuum extinction
Room moved end end cap 3 can bear the pressure that injection molding reaches 200MPa, and straight forming plastics pole ensures product matter
The reliability of amount.
When can effectively avoid the molding of moved end end cap by extraneous pressure, end cap deformation in moved end causes gas leakage, makes electrical
The problem of performance and mechanical failure；Another aspect avoids using being shaped insulation fabric part, then insulation fabric part is sleeved on
Production method on vacuum interrupter will not have air gap or vacuum gap, electric property will not be caused to fail.
It should be appreciated that the utility model be not limited in its application to this specification proposition component detailed construction and
Arrangement.The utility model can have other embodiment, and can realize and execute in many ways.Aforementioned change
Shape form and modification are fallen in the scope of the utility model.It should be appreciated that this reality of this disclosure and restriction
It is mentioned or all alternative groups of two or more apparent independent features with the novel text and/or drawings that extend to
It closes.All these different combinations constitute multiple alternative aspects of the utility model.Embodiment described in this specification is said
The best mode for becoming known for realizing the utility model is illustrated, and those skilled in the art will be enable new using this practicality
Type.
Claims (10)
1. a kind of pole, including pole shell and vacuum interrupter, the vacuum interrupter includes moved end end cap, described dynamic
Hold end cap lateral surface towards the cavity for corresponding to core pulling under mold in the pole, it is characterised in that：
Protective cover there are one being also set up outside the moved end end cap, the protective cover covers the moved end end cap lateral surface, with described
Lateral stress part outside the moved end end cap is passed to the vacuum interrupter main body by protective cover.
2. pole according to claim 1, it is characterised in that：The moved end end cap outer diameter is less than the vacuum extinction
The outer diameter of room, the protective cover are equal to or less than the outer diameter of the vacuum interrupter.
3. pole according to claim 1, it is characterised in that：The protective cover is set as and the moved end end cap
The compatible lid of shape or cup-shaped or ring-type.
4. pole according to claim 1, it is characterised in that：The protective cover lateral surface is provided with ring packing
Circle, the sealing ring material are elastic material.
5. pole according to claim 1, it is characterised in that：The protective cover lateral surface is provided with ring packing
Circle, the sealing ring material are nonmetallic materials.
6. a kind of process units of pole, described for producing such as pole described in any one of claim 1 to 5
Process units includes mold, and the mold has the die cavity for matching the pole shape, it is characterised in that：The production dress
It sets including a lower core pulling, the lower core pulling is located on the outside of the protective cover.
7. the process units of pole according to claim 6, it is characterised in that：The lower core pulling and the protective cover
It is elastic seal ring between lateral surface.
8. the process units of pole according to claim 7, it is characterised in that：The protective cover and the lower core pulling
It is all detachable part.
9. according to the process units of claim 6 to 8 any one of them pole：It is characterized in that, the mold is note
Mould.
10. according to the process units of claim 6 to 8 any one of them pole：It is characterized in that, the mold is pressure
Power casting mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721362288.2U CN207896027U (en) | 2017-10-20 | 2017-10-20 | Pole and its process units |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721362288.2U CN207896027U (en) | 2017-10-20 | 2017-10-20 | Pole and its process units |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207896027U true CN207896027U (en) | 2018-09-21 |
Family
ID=63547167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721362288.2U Active CN207896027U (en) | 2017-10-20 | 2017-10-20 | Pole and its process units |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207896027U (en) |
-
2017
- 2017-10-20 CN CN201721362288.2U patent/CN207896027U/en active Active
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