CN202549633U - Moving contact assembly and load switch equipped with moving contact assembly - Google Patents
Moving contact assembly and load switch equipped with moving contact assembly Download PDFInfo
- Publication number
- CN202549633U CN202549633U CN2011204750032U CN201120475003U CN202549633U CN 202549633 U CN202549633 U CN 202549633U CN 2011204750032 U CN2011204750032 U CN 2011204750032U CN 201120475003 U CN201120475003 U CN 201120475003U CN 202549633 U CN202549633 U CN 202549633U
- Authority
- CN
- China
- Prior art keywords
- fingertip
- moving contact
- assembly
- elastomeric element
- insulating member
- 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
Abstract
The utility model provides a moving contact assembly adapted to a load switch, which comprises a contact finger assembly and an elastic member. The contact finger assembly consists of a plurality of contact fingers. The plurality of contact fingers jointly enclose an inner cavity for a fixed contact of a load switch inserted therein. The elastic member is annularly arranged on the outside of the contact finger assembly, so that the contact finger assembly is sleeved in the elastic member. When the contact finger assembly expands outwardly caused by the fixed contact inserted into the inner cavity, the elastic member exerts an elastic contractile force on the outside of the contact finger assembly. Thus, the fixed contact and the contact finger assembly are in close contact with each other. A heat-insulating member is arranged between the contact finger assembly and the elastic member for preventing or lessening heat from being transferred from the contact finger assembly to the elastic member, so that the short-time current tolerance capacity of the moving contact assembly is improved. The utility model also provides a load switch equipped with the above moving contact assembly.
Description
Technical field
The utility model relates to electric component, particularly, relates to a kind of moving contact component and the on-load switch that comprises moving contact component.
Background technology
On-load switch is a kind of common electric component; Be a kind of can be in normal galvanic circle overload condition ShiShimonoseki of conditioned disjunction regulation close, carrying and drop-out current, also can press the switchgear of official hour loaded current in unusual galvanic circle condition (for example short circuit) down.
Traditionally, on-load switch, the for example middle on-load switch of pressing is made up of fixed contact assembly and moving contact component usually.Shown in Fig. 1-3, it illustrates the example according to the moving contact component of prior art, and wherein Fig. 1 is the perspective view that illustrates according to the moving contact component of prior art; Fig. 2 is the axial cutaway view that the moving contact component of prior art as shown in Figure 1 is shown; And Fig. 3 is the perspective view of a fingertip that the moving contact component of prior art as shown in Figure 1 is shown.As shown in the figure, moving contact component comprises: fingertip assembly 1 (with reference to Fig. 1 and 2), and this fingertip assembly is made up of many fingertips 11 (with reference to Fig. 3), and said many fingertips 11 surround an inner chamber 13 jointly and insert wherein for the fixed contact of on-load switch; And compression spring 2 (with reference to Fig. 1 and 2), this compression spring directly ring is located on the neighboring of fingertip assembly, and the fingertip assembly is set in wherein.When fixed contact inserts in the inner chamber 13 of fingertip assembly of moving contact component; Fingertip assembly 1 can extend out and swell; Correspondingly extend out the compression spring 2 that swells; 2 of compression springs correspondingly provide the reaction force of elastic shrinkage in fingertip assembly 1 outside, thereby make fingertip assembly 1 closely contact with fixed contact, and then reduce the contact resistance between the two.
Traditionally, as shown in the figure, there is not any heat insulating member between fingertip assembly 1 and the compression spring 2.When on-load switch when the big electric current, high-intensity electric current passes through between the fingertip assembly 1 of moving contact and fixed contact (not shown in FIG.).Owing to have contact resistance between fingertip assembly 1 and the fixed contact, so the temperature of fingertip assembly can raise, and correspondingly, the temperature of the compression spring that directly contacts with the fingertip assembly also can raise.Traditionally, compression spring generally is made up of single metal material, and metal material at high temperature elastic force will reduce.Therefore; Along with the compression spring temperature raises; Its elastic contractile force that on the fingertip assembly, applies will reduce, thereby make the fingertip assembly of moving contact component and the contact resistance between the fixed contact become big, will cause fingertip assembly and compression spring temperature to raise conversely and become big contact resistance; And the rising of spring temperature will cause contact resistance further to increase; So Domino effect can make contact resistance constantly worsen, and then possibly cause on-load switch to be burnt fully, even under extreme case, causes the switch cubicle blast.
Therefore, there is a kind of demand, promptly reduces the contact resistance between the dynamic/static contact, thereby improve the ability of the short time withstand current of on-load switch.Yet, do not have a kind of simple, effective, low cost solution in the prior art.
The utility model content
According to above-mentioned shortcoming and defect, the purpose of the utility model is to solve the problems referred to above that exist in the prior art at least.
In an embodiment of the utility model, a kind of moving contact component that is used for on-load switch is provided, comprising: the fingertip assembly, this fingertip assembly is made up of many fingertips, and many fingertips surround an inner chamber jointly and insert wherein for the fixed contact of on-load switch; And elastomeric element; This elastomeric element ring is located on the neighboring of fingertip assembly; The fingertip assembly is set in wherein, in fingertip assembly outside elastic contractile force is provided when swelling, thereby makes the fingertip assembly closely contact with fixed contact to extend out in the inner chamber owing to fixed contact inserts at the fingertip assembly; Wherein, be provided with heat insulating member between fingertip assembly and the elastomeric element to prevent or to reduce heat transmission from the fingertip assembly to elastomeric element.In the prior art; The technical staff often is conceived to improve the short time withstand current ability that good degree improves on-load switch that contacts of contact surface between fingertip and the fixed contact; But fail to think and heat insulating member is set between fingertip assembly and elastomeric element to come elastomeric element is protected, and then guarantee that elastomeric element can still have the better elastic convergent force during through contact at short time withstand current.Owing to be provided with between fingertip assembly and elastomeric element that heat insulating member is easy to realize and considerably less in industry to the change of existing structure of contact terminal; Therefore, the utility model provides a kind of simple, effective, low cost solution to the contact resistance that reduces contact, the ability that improves its short time withstand current.
In the above-described embodiments, preferably, heat insulating member can every fingertip attached to the fingertip assembly on, with the every fingertip structure that forms as one respectively, wherein further preferably, heat insulating member attaches or is coated on the every fingertip of fingertip assembly.Perhaps, as alternate embodiments, preferably, heat insulating member also can be attached on the elastomeric element, and with the elastomeric element structure that forms as one, wherein further preferably, heat insulating member attaches or is coated on the elastomeric element.Perhaps, as alternate embodiments, preferably, heat insulating member can also be fastened between fingertip and the elastomeric element, forms the independent parts that can separate with elastomeric element with the fingertip assembly.That the above-mentioned optimal way that heat insulating member is set has is easy to implement, existing structure of contact terminal is changed less advantage.
In the above-described embodiments, preferably, elastomeric element can be a metal spring.
In the above-described embodiments; Preferably, the fingertip assembly forms cylindrical shape, and this cylinder has the part that diameter diminishes at axial direction; Elastomeric element is arranged on the outside of the part that this diameter diminishes, and heat insulating member is formed between the part and elastomeric element that this diameter diminishes.
In the above-described embodiments, preferably, heat insulating member is formed by ceramic material, heat-proof epoxy material, heat resistant rubber material or other heat-barrier material.
In an embodiment of the utility model, a kind of on-load switch also is provided, the especially middle on-load switch of pressing, it comprises like the moving contact component among aforementioned arbitrary embodiment.
Will be appreciated that foregoing description only is for exemplary purpose, rather than will limit the scope of the utility model.
Description of drawings
Above-mentioned and the further feature of the exemplary embodiment of the utility model and advantage will become more obvious from following detailed description with the accompanying drawing; And this description and accompanying drawing only are used for scope illustrative purpose rather than that limit the utility model by any way, wherein:
Fig. 1 is the perspective view that illustrates according to the moving contact component of prior art;
Fig. 2 is the axial cutaway view that the moving contact component of prior art as shown in Figure 1 is shown;
Fig. 3 is the perspective view of a fingertip that the moving contact component of prior art as shown in Figure 1 is shown;
Fig. 4 is the perspective view that illustrates according to the moving contact component of the preferred embodiment of the utility model;
Fig. 5 is the axial cutaway view that the moving contact component of a preferred embodiment according to the utility model as shown in Figure 4 is shown; And
Fig. 6 be illustrate a preferred embodiment according to the utility model as shown in Figure 4 moving contact component fingertip and on the perspective view of heat insulating member;
Embodiment
Each exemplary embodiment of the utility model is described below with reference to accompanying drawings.
About the aforementioned of the utility model and other technology contents, characteristics and effect, following cooperation with reference to the detailed description of accompanying drawing to embodiment in, can clearly appear.The direction term of being mentioned in following examples, for example: upper and lower, left and right, front or rear etc. only are the directions with reference to accompanying drawing.Therefore, the direction term of use is to be used for explaining not to be to be used for limiting the utility model, and in addition, in whole embodiment, identical drawing reference numeral is represented components identical.
With reference to Fig. 4-6, wherein Fig. 4 is the perspective view that illustrates according to the moving contact component of the preferred embodiment of the utility model; Fig. 5 is the axial cutaway view that the moving contact component of a preferred embodiment according to the utility model as shown in Figure 4 is shown; And Fig. 6 be illustrate a preferred embodiment according to the utility model as shown in Figure 4 moving contact component fingertip and on the perspective view of heat insulating member.
Shown in Fig. 4-6; The on-load switch that is used for according to the utility model is especially pressed the moving contact component in the on-load switch; Comprise: fingertip assembly 10; This fingertip assembly 10 is made up of many fingertips 101 (an independent fingertip is illustrated in Fig. 6), and many fingertips 101 surround an inner chamber 103 jointly and insert wherein for the fixed contact (not shown) of on-load switch; Elastomeric element 20; This elastomeric element ring is located at the outside of fingertip assembly 10; Fingertip assembly 10 is set in wherein; In fingertip assembly 10 outsides elastic contractile force is provided when swelling, thereby makes fingertip assembly 10 closely contact with fixed contact to extend out in the inner chamber 103 owing to fixed contact inserts at fingertip assembly 10; And heat insulating member 30, it is arranged between fingertip assembly 10 and the elastomeric element 20 to prevent or to reduce the heat transmission from the fingertip assembly to elastomeric element.Thus; Heat insulating member 30 forms the heat protection to elastomeric element 20; Prevent that its temperature from raising inadequately, and then guarantee the elasticity of elastomeric element, thereby guarantee that fingertip assembly 10 contacts with the tight of fixed contact; And then the reduction contact resistance, thereby compared with prior art improved the ability of the short time withstand current of whole on-load switch greatly.Although it is not shown; But it will be appreciated by those skilled in the art that; In illustrated embodiment according to the utility model; Thereby the moving bar of on-load switch can be connected the left side of moving contact component and drive the moving contact component motion, and fixed contact is arranged in the right side of moving contact component, and the motion backward of moving contact component will cause fixed contact to insert in the inner chamber 103.
In illustrated embodiment, heat insulating member 30 adheres to, and for example attaches or applies, on the every fingertip 101 of fingertip assembly, with the every fingertip structure that forms as one respectively.As shown in Figure 4; Fingertip assembly 10 can form cylindrical shape; This cylinder has the part (referring to Fig. 5) that diameter diminishes at axial direction, and elastomeric element 20 is arranged on the portion of external that this diameter diminishes, and heat insulating member 30 is formed between the part and elastomeric element 20 that this diameter diminishes.
In the embodiment of the utility model; Contrast is according to Fig. 6 of the embodiment of the utility model and Fig. 3 according to prior art; The outline that heat insulating member 30 and fingertip 101 form together can be identical with the outline of the fingertip of prior art; Thereby feasible moving contact component according to the utility model does not change the appearance design of traditional moving contact component on the whole, thereby helps the minimize production structural change, and then reduces design cost.
In the embodiment of the utility model, heat insulating member 30 is preferably formed by ceramic material, heat-proof epoxy material, heat resistant rubber material or other suitable material.
In the embodiment of the utility model, because heat insulating member 30 deadened the heat transmission between elastomeric element 20 and the fingertip assembly 10 well, so elastomeric element 20 still can select traditional metal spring for use, and needn't select expensive high temperature resistant elastomeric material for use.
Although should be noted that in the aforementioned embodiment, heat insulating member is described and is depicted as attached on the fingertip assembly,, the utility model is not limited to this.Those skilled in the art can be set to by heat insulating member under the teachings that the utility model provides, and for example, for example adhere to and to attach or to be coated on the elastomeric element, with the elastomeric element structure that forms as one; Perhaps, heat insulating member is fastened between fingertip and the elastomeric element, forms the independent parts that can separate with elastomeric element with the fingertip assembly.These execution modes do not break away from the inventive concept of the utility model, are about to heat insulating member and are arranged between elastomeric element and the fingertip assembly, so that the heat protection to elastomeric element to be provided.Correspondingly, in these embodiment, other technical characterictic of illustrated embodiment can be incorporated into wherein.
In the utility model, a kind of on-load switch also is provided, the especially middle on-load switch of pressing, it comprises the described moving contact component like aforementioned arbitrary embodiment.Correspondingly, this on-load switch has improved short time withstand current ability.
Although on basis with reference to each embodiment; The present invention is described in specification and is illustrated in the accompanying drawings; But it will be appreciated by those skilled in the art that; The foregoing description only is preferred embodiment, and some technical characterictic among the embodiment possibly not be essential for solving specific technical problem, thereby can not or omit these technical characterictics and the solution of non-influence technique problem or the formation of technical scheme; And the characteristic of an embodiment, key element and/or function can suitably make up, combine or cooperate with characteristic, key element and/or the function of other one or more embodiment each other, only if this combination, combination or cooperation obviously can not be implemented.
Claims (10)
1. moving contact component that is used for on-load switch comprises:
The fingertip assembly, this fingertip assembly is made up of many fingertips, and said many fingertips surround an inner chamber jointly and insert wherein for the fixed contact of on-load switch; And
Elastomeric element; This elastomeric element ring is located at the outside of said fingertip assembly; Said fingertip assembly is set in wherein; In said fingertip assembly outside elastic contractile force is provided when swelling, thereby makes said fingertip assembly closely contact with said fixed contact to extend out in the said inner chamber owing to said fixed contact inserts at said fingertip assembly;
It is characterized in that,
Be provided with heat insulating member between said fingertip assembly and the said elastomeric element to prevent or to reduce heat transmission from said fingertip assembly to said elastomeric element.
2. moving contact component as claimed in claim 1 is characterized in that, on the every fingertip of said heat insulating member attached to said fingertip assembly, with the every fingertip structure that forms as one respectively.
3. moving contact component as claimed in claim 2 is characterized in that, said heat insulating member attaches or is coated on the every fingertip of said fingertip assembly.
4. moving contact component as claimed in claim 1 is characterized in that, said heat insulating member is attached on the said elastomeric element, with the said elastomeric element structure that forms as one.
5. moving contact component as claimed in claim 4 is characterized in that, said heat insulating member attaches or is coated on the said elastomeric element.
6. moving contact component as claimed in claim 1 is characterized in that, said heat insulating member is fastened between said fingertip and the said elastomeric element, forms the independent parts that can separate with said elastomeric element with said fingertip assembly.
7. moving contact component as claimed in claim 1 is characterized in that, said elastomeric element is a metal spring.
8. moving contact component as claimed in claim 1; It is characterized in that; Said fingertip assembly forms cylindrical shape; This cylinder has the part that diameter diminishes at axial direction, and said elastomeric element is arranged on the outside of the part that this diameter diminishes, and said heat insulating member is formed between the part and said elastomeric element that this diameter diminishes.
9. like the described moving contact component of one of claim 1-8, it is characterized in that said heat insulating member is formed by ceramic material, heat-proof epoxy material or heat resistant rubber material.
10. an on-load switch is characterized in that, comprises like the described moving contact component of aforementioned arbitrary claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204750032U CN202549633U (en) | 2011-11-25 | 2011-11-25 | Moving contact assembly and load switch equipped with moving contact assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204750032U CN202549633U (en) | 2011-11-25 | 2011-11-25 | Moving contact assembly and load switch equipped with moving contact assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202549633U true CN202549633U (en) | 2012-11-21 |
Family
ID=47170225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204750032U Expired - Fee Related CN202549633U (en) | 2011-11-25 | 2011-11-25 | Moving contact assembly and load switch equipped with moving contact assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202549633U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109859962A (en) * | 2018-12-28 | 2019-06-07 | 宁波中迪机械有限公司 | Self-help contact terminal seat |
-
2011
- 2011-11-25 CN CN2011204750032U patent/CN202549633U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109859962A (en) * | 2018-12-28 | 2019-06-07 | 宁波中迪机械有限公司 | Self-help contact terminal seat |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1160815A3 (en) | Multidirectional switch whose stem can be tilted and pushed | |
| WO2006027251A8 (en) | Load shedder | |
| CN203351504U (en) | Self-recovery temperature protector | |
| CN201336245Y (en) | Dynamic contact of high-voltage vacuum breaker and static contact of high-voltage switch cabinet matched therewith | |
| CN202549633U (en) | Moving contact assembly and load switch equipped with moving contact assembly | |
| CN103996987B (en) | Connector of the large electric current of handcart of direct-current circuit breaker | |
| TW200707893A (en) | Starter relay | |
| CN106229197B (en) | A kind of toggle switch | |
| CN102723154A (en) | Resistor | |
| CN207542117U (en) | A kind of moving switch with eject switch | |
| CN201302942Y (en) | Conductive loop contact finger structure of disconnecting switch | |
| CN103347226B (en) | A kind of mechanism for automatically switching, method and a kind of earphone of earphone play mode | |
| CN207489685U (en) | A kind of high tolerance watchband-shaped contactor | |
| CN202434385U (en) | Button bouncing structure | |
| CN201374430Y (en) | Connector | |
| CN201886943U (en) | Sliding type ship-shaped rocker switch | |
| CN201490066U (en) | Thin-film switch elastic sheet | |
| CN204088081U (en) | A kind of Live switch | |
| CN104269300B (en) | The hydraulic pressure system of self-return impulsive force can be reduced | |
| CN204834473U (en) | Three -workers' bit switch is partial structure of contact terminal once | |
| CN204012374U (en) | Connector of the large electric current of handcart of direct-current circuit breaker | |
| CN203351481U (en) | Reset piano-key switch | |
| CN203351440U (en) | Electrical contact | |
| CN202487502U (en) | Electromagnetic relay with limiting rebound | |
| CN104091698B (en) | ACB circuit breaker multiconductor bridge-shaped contact mechanism |
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: 20121121 Termination date: 20161125 |