CN204441122U - The auxiliary switch that a kind of break-make is effective - Google Patents
The auxiliary switch that a kind of break-make is effective Download PDFInfo
- Publication number
- CN204441122U CN204441122U CN201520139655.7U CN201520139655U CN204441122U CN 204441122 U CN204441122 U CN 204441122U CN 201520139655 U CN201520139655 U CN 201520139655U CN 204441122 U CN204441122 U CN 204441122U
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- China
- Prior art keywords
- contact
- moving
- sliding
- push rod
- fixed contact
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- 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
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Abstract
The utility model discloses the auxiliary switch that a kind of break-make is effective, comprise push rod and several sliding rooms, several slide openings are offered in described push rod, two moving contacts are provided with in described each slide opening, described two moving contacts are connected by contact back-moving spring, and described each sliding indoor are provided with the fixed contact matched in moving contact, and described push rod lower end is arranged with push rod back-moving spring, described slide opening is 11:16 with the length ratio of sliding room, and described each sliding indoor are provided with the slide rail for locating moving contact.Auxiliary switch of the present utility model is by being set to 11:16 by slide opening and the length ratio of sliding room, deformation quantity is reasonable in the course of the work to make contact back-moving spring, thus make moving contact produce less skew in the course of the work, by arranging slide rail in sliding indoor, moving contact is positioned by slide rail in the course of the work, solving fixed contact to misplace and the problem of overcurrent because contacting with moving contact, avoiding fixed contact and moving contact to burn.
Description
Technical field
The utility model relates to a kind of auxiliary switch, the auxiliary switch that especially a kind of break-make is effective.
Background technology
At present, low pressure stroke switch is widely used in the industries such as metallurgy, mine, cement, chemical industry, electric power, and travel switch can be divided into several structures such as Direct Action Type, roller type, inching and composite type.For the Direct Action Type travel switch that market is sold, connected by contact back-moving spring between moving contact.
Existing notification number a kind of auxiliary switch with cleaning function that has been the patent disclosure of CN203774101U, comprise the push rod (1) being provided with multiple slide opening (11), the push rod back-moving spring (2) be set on push rod bottom, two of being arranged in each slide opening dynamicly touch bridge (3), be arranged in each slide opening and two dynamicly touching contact back-moving spring (4) between bridges, be arranged on and respectively dynamicly touch moving contact (5) on bridge two ends and the fixed contact (6) with fixed contact (61) suitable with each moving contact; It is characterized in that: each moving contact, in its center of contact-making surface (52) for being electrically connected with a corresponding moving contact, is provided with an outstanding hemisphere boss (51).
In the process that above-mentioned auxiliary switch contacts with fixed contact at moving contact, because slide opening and the length ratio of sliding room design unreasonable, the stage casing of contact back-moving spring is made to produce larger sidesway, moving contact is caused to produce a certain amount of skew, to such an extent as to the moving contact on moving contact and the fixed contact on fixed contact can not face and contact, thus the area making moving contact contact with fixed contact reduces to some extent, and contact is in Long-Time Service, there will be following problem: the dislocation between fixed contact and moving contact, contact back-moving spring is easily caused to occur a certain amount of distortion, thus impel fixed contact and moving contact to misplace more obvious when contacting, the contact area of fixed contact and moving contact is reduced further, when the contact area of fixed contact and moving contact little to a certain extent time, easily cause contact overcurrent and burn.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is the auxiliary switch providing a kind of break-make effective, comprise push rod and several sliding rooms, several slide openings are offered in described push rod, two moving contacts are provided with in described each slide opening, described two moving contacts are connected by contact back-moving spring, described each sliding indoor are provided with the fixed contact matched in moving contact, described push rod lower end is arranged with push rod back-moving spring, described slide opening is 11:16 with the length ratio of sliding room, and described each sliding indoor are provided with the slide rail for locating moving contact.
Preferably, the length of described slide opening is 11mm.
Preferably, the length of described sliding room is 16mm.
Preferably, described slide rail is arc-shaped groove, and the curvature that curvature and the moving contact of described groove contact at groove part is consistent.
In the auxiliary switch structure schematic diagram shown in Fig. 1, described auxiliary switch comprises a slide bar and three sliding rooms, described slide bar is offered three slide openings, be respectively the first slide opening, second slide opening and the 3rd slide opening, two moving contacts are provided with in described first slide opening, be respectively the first moving contact and the second moving contact, the first contact back-moving spring is connected with between described first moving contact and the second moving contact, two moving contacts are provided with in described second slide opening, be respectively the 3rd moving contact and the 4th moving contact, the second contact back-moving spring is connected with between described 3rd moving contact and the 4th moving contact, two moving contacts are provided with in described 3rd slide opening, be respectively the 5th moving contact and the 6th moving contact, the 3rd contact back-moving spring is connected with between described 5th moving contact and the 6th moving contact, described sliding room comprises the first sliding room, second sliding room and the 3rd sliding room, described first sliding indoor are provided with matches in the first fixed contact of the first moving contact and the second moving contact and the second fixed contact respectively, described second sliding indoor are provided with matches in the 3rd fixed contact of the 3rd moving contact and the 4th moving contact and the 4th fixed contact respectively, described 3rd sliding indoor are provided with matches respectively in the 5th fixed contact of the 5th moving contact and the 6th moving contact and the 6th fixed contact.With moving contact unlike, described first fixed contact comprises the first left fixed contact and the first right fixed contact, described second fixed contact comprises the second left fixed contact and the second right fixed contact, described 3rd fixed contact comprises the 3rd left fixed contact and the 3rd right fixed contact, described 4th fixed contact comprises the 4th left fixed contact and the 4th right fixed contact, described 5th fixed contact comprises the 5th left fixed contact and the 5th right fixed contact, described 6th fixed contact comprises the 6th left fixed contact and the 6th right fixed contact, described first slide opening, the length of the second slide opening and the 3rd slide opening is 11mm, described first sliding room, the length of the second sliding room and the 3rd sliding room is 16mm.Described first sliding room, the second sliding room and the 3rd sliding indoor are provided with the slide rail for locating moving contact, and described slide rail is arc-shaped groove, and the curvature that curvature and the moving contact of described groove contact at groove part is consistent.
The utility model is by being set to 11:16 by slide opening and the length ratio of sliding room, deformation quantity is reasonable in the course of the work to make contact back-moving spring, thus the side-play amount making moving contact produce in the course of the work is little, by arranging slide rail in sliding indoor, moving contact is positioned by slide rail in the course of the work, solving fixed contact to misplace and the problem of overcurrent because contacting with moving contact, avoiding fixed contact and moving contact to burn.
Accompanying drawing explanation
Fig. 1 is the structural representation of auxiliary switch.
In figure: 1, the first slide opening; 2, the second slide opening; 3, the 3rd slide opening; 4, the first sliding room; 5, the second sliding room; 6, the 3rd sliding room; 7, the first contact back-moving spring; 8, the second contact back-moving spring; 9, the 3rd contact back-moving spring.
Embodiment
With reference to the structural representation of the auxiliary switch shown in Fig. 1, when use auxiliary switch of the present utility model, external force be applied to be arranged on push rod roller above, push rod is slided along fixing direction, the push rod back-moving spring be now arranged on push rod is squeezed and deformation, when push rod up shifts the end onto, be arranged at the first moving contact in slide opening, 3rd moving contact and the 5th moving contact are conflicted at the first fixed contact respectively, on 3rd fixed contact and the 5th fixed contact, now, first left fixed contact has just been connected when being electrically connected with the first right fixed contact, simultaneously, 3rd left fixed contact is connected when being electrically connected with the 3rd right fixed contact, 5th left fixed contact is also connected when being electrically connected with the 5th right fixed contact.If now misplacing appears in the moving contact on moving contact and the fixed contact on fixed contact, this just means that the contact area of moving contact and fixed contact reduces, also just mean that the resistance of junction becomes large, if larger in circuit load, when namely current ratio is larger, according to formula Q=I^2*R*t, in electric current one timing, the caloric value of conductor within the unit interval is directly proportional to resistance, therefore, when resistance R becomes large, heating of contact amount Q is also just linear becomes large, when heat reaches certain value, contact variable color can be caused and start to smolder, finally burning contact.And when cancelling the power be applied on push rod, the effect that push rod is subject to push rod back-moving spring is down moved, and finally return to original position.
If be provided with slide rail in sliding indoor, and the length of slide opening is set to 11mm, the length of sliding room is set to 16mm, now slide rail and the length of sliding room are than being 11:16, the drift of the contact back-moving spring now chosen is 13mm, wire diameter is 4mm, curl up than the Compress Spring for 11.3 that (choosing drift is 13mm, wire diameter is 4mm, curl up than the Compress Spring for 11.3 is because the one side that moving contact is connected to contact back-moving spring is the square of 5mm*5mm, and the elastic force that moving contact is required is in the course of the work also little, choose and curl up than being 11.3, drift is that the Compress Spring of 13mm is comparatively suitable), when the moving contact that two thickness are 1.75mm is arranged in slide opening that length is 11mm and described two moving contacts are not all conflicted on fixed contact, now contact back-moving spring is compressed into 7.5mm, and when the contact of in two moving contacts is conflicted on fixed contact completely, now contact back-moving spring is compressed into 4.8mm, therefore the length range of contact back-moving spring work is 4.8mm ~ 7.5mm, having in time experiment test of limit, the maximal displacement amount that contact back-moving spring occurs in the course of the work is 0.5mm, almost be in best operating state, therefore when the length of slide opening is 11mm, when the length of sliding room is 16mm, decrease contact back-moving spring amount of side-shift at work to a certain extent, thus decrease the magnitude of misalignment of moving contact when contacting at fixed contact on the one hand.When external force is applied to above the roller being arranged on push rod, push rod is slided along fixing direction, the push rod back-moving spring be now arranged on push rod is squeezed and deformation, when push rod up pushes away, first moving contact, second moving contact, 3rd moving contact, 4th moving contact, 5th moving contact and the 6th moving contact all up can slide along slide rail, because the curvature of slide rail is consistent in the curvature of track portion with contact, therefore together with contact fits like a glove with slide rail, contact is positioned by slide rail in the process of movement, when push rod up shifts the end onto, be arranged at the first moving contact in slide opening, 3rd moving contact and the 5th moving contact are conflicted at the first fixed contact respectively, 3rd fixed contact and the 5th fixed contact there will not be dislocation, now, first left fixed contact has just been connected when being electrically connected with the first right fixed contact, simultaneously, 3rd left fixed contact is connected when being electrically connected with the 3rd right fixed contact, 5th left fixed contact is also connected when being electrically connected with the 5th right fixed contact.When the contact area of moving contact and fixed contact is the area designed in advance, also would not mean that the resistance of junction becomes large, naturally also just there is no above-mentioned contact variable color and start to smolder and finally burn one to say.This addresses the problem fixed contact in prior art to misplace and the problem of overcurrent because contacting with moving contact, avoiding fixed contact and moving contact to burn.
In sum, auxiliary switch of the present utility model is by being set to 11:16 by slide opening and the length ratio of sliding room, deformation quantity is reasonable in the course of the work to make contact back-moving spring, thus make moving contact produce less skew in the course of the work, by arranging slide rail in sliding indoor, moving contact is positioned by slide rail in the course of the work, solves fixed contact and misplace and the problem of overcurrent because contacting with moving contact, avoid fixed contact and moving contact to burn.
The above is only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (4)
1. the auxiliary switch that a break-make is effective, comprise push rod and several sliding rooms, several slide openings are offered in described push rod, two moving contacts are provided with in described each slide opening, described two moving contacts are connected by contact back-moving spring, and described each sliding indoor are provided with the fixed contact matched in moving contact, and described push rod lower end is arranged with push rod back-moving spring, it is characterized in that: described slide opening is 11:16 with the length ratio of sliding room, and described each sliding indoor are provided with the slide rail for locating moving contact.
2. the auxiliary switch that break-make according to claim 1 is effective, is characterized in that: the length of described slide opening is 11mm.
3. the auxiliary switch that break-make according to claim 1 is effective, is characterized in that: the length of described sliding room is 16mm.
4. the auxiliary switch that break-make according to claim 1 is effective, is characterized in that: described slide rail is arc-shaped groove, and the curvature that curvature and the moving contact of described groove contact at groove part is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520139655.7U CN204441122U (en) | 2015-03-12 | 2015-03-12 | The auxiliary switch that a kind of break-make is effective |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520139655.7U CN204441122U (en) | 2015-03-12 | 2015-03-12 | The auxiliary switch that a kind of break-make is effective |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204441122U true CN204441122U (en) | 2015-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520139655.7U Expired - Fee Related CN204441122U (en) | 2015-03-12 | 2015-03-12 | The auxiliary switch that a kind of break-make is effective |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204441122U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111180224A (en) * | 2019-09-26 | 2020-05-19 | 胡建强 | High-reliability fire-cut-off limiter |
| CN112635266A (en) * | 2020-12-28 | 2021-04-09 | 安徽鼎业电气有限公司 | Emergency closing device of permanent magnet intelligent circuit breaker for 10KV power distribution line of power grid |
-
2015
- 2015-03-12 CN CN201520139655.7U patent/CN204441122U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111180224A (en) * | 2019-09-26 | 2020-05-19 | 胡建强 | High-reliability fire-cut-off limiter |
| CN111180224B (en) * | 2019-09-26 | 2021-11-09 | 胡建强 | High-reliability fire-cut-off limiter |
| CN112635266A (en) * | 2020-12-28 | 2021-04-09 | 安徽鼎业电气有限公司 | Emergency closing device of permanent magnet intelligent circuit breaker for 10KV power distribution line of power grid |
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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 |
Granted publication date: 20150701 Termination date: 20170312 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |