CN204391031U - For the Insurance Block of the safety piece of switching device - Google Patents
For the Insurance Block of the safety piece of switching device Download PDFInfo
- Publication number
- CN204391031U CN204391031U CN201420492384.9U CN201420492384U CN204391031U CN 204391031 U CN204391031 U CN 204391031U CN 201420492384 U CN201420492384 U CN 201420492384U CN 204391031 U CN204391031 U CN 204391031U
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- contact
- insurance block
- safety piece
- making surface
- side arm
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Abstract
The utility model relates to a kind of Insurance Block (1) for being placed in the safety piece in switching device, described Insurance Block cuts off electric current by the safety piece of circulating current, described safety piece has two sheet contact parts, safety piece body is provided with between two contacts, described Insurance Block has bottom (2), two side arms (3) are extended perpendicular to described bottom (2) from described bottom (2), wherein, described bottom (2) and side arm (3) form U-shaped shape, and described two side arms (3) have a contact-making surface (4) respectively, described contact-making surface abuts on contact between which towards ground pressure mutually with loading, and described Insurance Block have be placed in described bottom (2) another side on the fixed contact (5b) for connecting electric current, it is characterized in that, described Insurance Block (1) is designed to integral type, and the cooling fin (8) of described contact-making surface (4) is deviated from the upper arrangement in the outside (7) of at least one side arm (3).
Description
Technical field
The utility model relates to a kind of Insurance Block for being placed in the safety piece in switching device, described Insurance Block cuts off electric current by the safety piece of circulating current, described safety piece has two sheet contact parts, safety piece body is provided with between two contacts, described Insurance Block has bottom, two side arms are extended perpendicular to described bottomland from described bottom, wherein, described bottom and side arm form U-shaped shape, and described two side arms have a contact-making surface respectively, described contact-making surface abuts on contact between which towards ground pressure mutually with loading, and described Insurance Block have be placed in described bottom another side on the fixed contact for connecting electric current.
Background technology
Become known for the Insurance Block of the switch with safeties (safety piece).This safeties are used for cutting off the electric current flowing through these safeties when electric current such as exceedes preestablished limit value.At this, safety piece has the connection contact (contact) of two sheets, and they are mainly designed to the form of plug-in strip (contact plug-in strip, guillotine type contact).Between plug-in strip, be provided with safety piece body, in this safety piece body, carry out failure of current.Each plug-in strip is inserted in Insurance Block in switching device, and this Insurance Block is mainly designed to U-shaped, is namely made up of bottom and two side arms, between two side arms, installs plug-in strip to pressure-loaded.Two of described side arm mutually towards surface form contact-making surface, described contact-making surface abuts in the side of plug-in strip.The opposed faces of bottom is settled the lug plate of Insurance Block oppositely with side arm, and electric current can flow through on lug plate.
The lug plate (fixed contact) of Insurance Block is connected threadably with U-shaped usually.The contact transition shortcoming of such formation is, can cause obvious intensification at this place.For this reason, described two parts also kayser connection mutually often.But this connected mode still has critical contact transition.
In addition, the heating (intensification) increased can also be there is in the loss power when there being high current owing to accumulating on the contact plug-in strip of safeties.This intensification has damaged the enduring quality of safeties.
Summary of the invention
Solution according to technical problem described in the utility model is, Insurance Block is designed to integral type, and is placed on the outside of at least one side arm by the cooling fin deviating from contact.Realize the contact transition that can cause obviously lower intensification by this way.In addition, cooling fin is relatively freely located, and therefore can be positioned in the region (mainly on contact) of higher heating.The efficiency of cooling fin improves, because be correspondingly maximum in the difference of that and ambient temperature.In addition, cooling fin does not have the contact position as multipart cooling structure, and this can raise the efficiency extraly.By integral type (one-piece) structure, usually no longer need the contact position (with the thermal source formed thus) that there is no need.The raising of this efficiency can reduce the use of material.In addition, assembly cost can also be reduced.
When cooling fin is molded over (or on multiple side arm) on side arm, on thermal techniques and manufacturing technology is all favourable.
If each Insurance Block is formed based on T-shaped support, its side arm is about being used as extending along contrary direction in this wise with its opposed intermediate arm of lug plate, make two of side arm surfaces opposed spaced reciprocally, and form mutually towards contact-making surface, this is simple technically.
If contact-making surface is in parallel surface, then provide the easier grafting of safety piece.
When surrounding the pressure loading of two side arms with applying clamp-type by spring part, thermal techniques is favourable.
Accompanying drawing explanation
The utility model is set forth in detail below in conjunction with embodiment.Unique accompanying drawing 1 illustrates such as in case of a short circuit, for cutting off the Insurance Block 1 of the switching device (not shown) of circuit by safety piece.Safety piece has contact plug-in strip (contact of usual sheet) on two ends.Safety piece body is set between described contact plug-in strip, in this safety piece body, such as fusible link is set.
Embodiment
Insurance Block 1 has U-shaped shape, and have bottom 2, bottom this, extend two side arms 3, be upwards extend in the drawings.Described two side arms 3 extend perpendicular to bottom surface on the side of bottom 2; Two side arms are settled opposed to each other, and form two contact-making surfaces extended parallel to each other 4 by this way, and wherein, their spacing is approximately consistent with the width contacting plug-in strip.
Only have the end of side arm, namely only have portion's section of side arm 3 to be parallel to each other accordingly, and form contact-making surface 4.The spring part 5 of clamp-type strengthens the elastic reaction of two side arm ends, and provides the pressure loading relative to the contact plug-in strip clamped between which for side arm 3, and wherein, two side arms 3 are clamped.
The opposed faces of bottom 2 is settled the intermediate arm 5a as fixed contact 5b (lug plate), and this fixed contact in FIG to downward-extension, and forms the electrical connection of Insurance Block 1.
Insurance Block 1 is made by processing (especially bending) with the T-shaped support of shoulder belt form by modification.In the fabrication process, the side arm of described two T-shaped supports is bent away from intermediate arm 5a (at this upwards) in this wise, makes two parallel surface phase mutual spacing ground opposed, described parallel surface form mutually towards contact-making surface 4.
The outside 7 of side arm 3 is settled and deviates from side arm and deviate from the cooling fin 8 contacting plug-in strip (usually deviating from contact) thus, at this this cooling fin shaping on side arm 3.Described cooling fin 8 is located on side arm end, to realize better cooling effect.
Claims (5)
1. one kind for being placed in the Insurance Block (1) of the safety piece in switching device, described Insurance Block cuts off electric current by the safety piece of circulating current, described safety piece has two sheet contact parts, safety piece body is provided with between two contacts, described Insurance Block has bottom (2), two side arms (3) are extended perpendicular to described bottom (2) from described bottom (2), wherein, described bottom (2) and side arm (3) form U-shaped shape, and described two side arms (3) have a contact-making surface (4) respectively, described contact-making surface abuts on contact between which towards ground pressure mutually with loading, and described Insurance Block have be placed in described bottom (2) another side on the fixed contact (5b) for connecting electric current, it is characterized in that, described Insurance Block (1) is designed to integral type, and the cooling fin (8) of described contact-making surface (4) is deviated from the upper arrangement in the outside (7) of at least one side arm (3).
2. Insurance Block according to claim 1 (1), is characterized in that, described cooling fin is molded on described side arm.
3. Insurance Block according to claim 1 and 2 (1), it is characterized in that, described Insurance Block (2) is configured to by T-shaped, its side arm (3) extends along contrary direction in this wise about the intermediate arm (5a) opposite with described side arm for fixed contact (5b), make two surfaces of described side arm (3) opposed spaced reciprocally, and form mutually towards contact-making surface (4).
4. Insurance Block according to claim 1 and 2 (1), is characterized in that, described contact-making surface (4) is in parallel plane.
5. Insurance Block according to claim 1 and 2 (1), is characterized in that, described pressure-loaded produces by spring part (5), and described spring part clamp-type ground surrounds described two side arms (3).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013217118.8 | 2013-08-28 | ||
| DE102013217118 | 2013-08-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204391031U true CN204391031U (en) | 2015-06-10 |
Family
ID=53363728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420492384.9U Active CN204391031U (en) | 2013-08-28 | 2014-08-28 | For the Insurance Block of the safety piece of switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204391031U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107731636A (en) * | 2017-11-06 | 2018-02-23 | 温州三实电器有限公司 | Contact base and bar shaped fuse base |
-
2014
- 2014-08-28 CN CN201420492384.9U patent/CN204391031U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107731636A (en) * | 2017-11-06 | 2018-02-23 | 温州三实电器有限公司 | Contact base and bar shaped fuse base |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |