CN204289340U - A kind of fuse with safety guard - Google Patents
A kind of fuse with safety guard Download PDFInfo
- Publication number
- CN204289340U CN204289340U CN201520029024.XU CN201520029024U CN204289340U CN 204289340 U CN204289340 U CN 204289340U CN 201520029024 U CN201520029024 U CN 201520029024U CN 204289340 U CN204289340 U CN 204289340U
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- CN
- China
- Prior art keywords
- safety guard
- base
- melt
- fuse
- contact chip
- 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.)
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Abstract
The utility model discloses a kind of fuse with safety guard, comprise melt and base, described melt is arranged on base, and described fuse also comprises the safety guard be isolated from the outside by melt, described safety guard is fixed on mounting guide rail when mounted, and described base is removably connected to safety guard.The utility model is by arranging safety guard and base, construct novel fuse base, by arranging fixed part to be fixed on mounting guide rail on safety guard, by arranging contact chip with fixing melt on base, base is fixed on safety guard, by arranging transverse slat on base to be plugged in safety guard with operating personnel, when base is connected to safety guard, melt is isolated from the outside, relieves the potential safety hazard produced because of melt blast.
Description
Technical field
The utility model relates to a kind of fuse, especially a kind of fuse with safety guard.
Background technology
Fuse refers to when electric current exceedes setting, and make fuse blows with the heat that itself produces, a kind of electrical equipment of open circuit, is generally fixed on mounting guide rail.Fuse is after exceeding setting a period of time according to electric current, with the heat that himself produces, fuse is melted, thus circuit is disconnected; Use a kind of current protector that this principle is made.Fuse is widely used in high and low voltage electric distribution system and control system and power consumption equipment, as the protector of short circuit and overcurrent, is apply one of the most general protection device.
At present, fuse base on domestic market does not all meet BS standard, such as, existing one section of notification number is the fuse base that patent discloses a kind of direct-current low-voltage fuse link of CN 103065902 A, comprise a pedestal, an end of incoming cables conductive plate, a leading-out terminal conductive plate, a pair socket, an end of incoming cables connection bolt and a leading-out terminal connection bolt, it is characterized in that, the central authorities of described pedestal are provided with the groove holding described fuse-link; Described end of incoming cables conductive plate and leading-out terminal conductive plate are fixed on two of described pedestal correspondingly; Described a pair socket is fixed on the inner side of described end of incoming cables conductive plate and the inner side of leading-out terminal conductive plate correspondingly; Described end of incoming cables connection bolt and leading-out terminal connection bolt are arranged on the outside of described end of incoming cables conductive plate and the outside of leading-out terminal conductive plate correspondingly; One lateral edges of described end of incoming cables conductive plate also installs one for the signal contact in connecting secondary loop.
Use the melt of the fuse of above-mentioned base to expose to the external world, there is certain potential safety hazard, below melt occurs, three kinds of situations can be blasted: 1. melt quality existing problems; 2. melt type selecting is unreasonable, and breaking capacity can not meet the maximum failed shorted capacity of circuit; 3. the melt arcing time is long, causes rushing down outside arc light, causes arc short-circuit.If blast when using above-mentioned melt base, owing to not arranging any safety device, easily cause injury operating personnel, there is certain potential safety hazard.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of fuse with safety guard, comprise melt and base, described melt is arranged on base, described fuse also comprises the safety guard be isolated from the outside by melt, described safety guard is fixed on mounting guide rail when mounted, and described base is removably connected to safety guard.
The utility model is set to further: the one side of described base is provided with for connecting melt and docking the contact chip of safety guard, and the one side that described base is provided with contact chip is dorsad provided with the transverse slat being convenient to be plugged by base in safety guard.
The utility model is set to further: the one side of described safety guard base dorsad is when mounted provided with the fixed part for being fixed on mounting guide rail, the one side of described safety guard fixed part is dorsad provided with the concave part for docking contact chip, described safety guard is also provided with the wire connecting portion connecting outside line for melt, described wire connecting portion is arranged near concave part.
The utility model is set to further: described contact chip is " U " type contact chip, and the length of described contact blade pin is greater than height when melt is configured at base, and the part that described contact chip exceeds melt embeds concave part when mounted.
The utility model is set to further: described concave part is arranged on the two ends of safety guard, and described concave part comprises projection and is opened in the groove at projection two ends, and the spacing of described two grooves equals the spacing contacting blade pin.
The utility model is set to further: described fixed part comprises fixture block, location notch and is opened in the draw-in groove of fixture block both sides, and safety guard is fixed on mounting guide rail by fixture block, draw-in groove and location notch by described fixed part.
The utility model is set to further: run through the cylinder having entrance hole centered by described wire connecting portion.
The utility model is set to further: be provided with jump ring in described location notch.
By adopting technique scheme, safety guard, base and melt are set, construct novel fuse, by arranging fixed part to be fixed on mounting guide rail on safety guard, base is fixed on safety guard, by arranging transverse slat on base to be plugged in safety guard with operating personnel, when base is connected to safety guard by arranging contact chip with fixing melt on base, melt is isolated from the outside, relieves the potential safety hazard produced because of melt blast.
The detailed construction of a kind of fuse with safety guard of the present utility model is as follows:
In the fuse structure schematic diagram of the band safety guard shown in Fig. 1, the fuse of described band safety guard comprises safety guard, base and melt.Coordinate in schematic diagram at the fuse of the band safety guard shown in Fig. 2, described base is removably connected to safety guard, the one side of described base is provided with for connecting melt and docking the contact chip of safety guard, the one side that described base is provided with contact chip is dorsad provided with and facilitates it to plug transverse slat in safety guard, the one side of described safety guard base dorsad is when mounted provided with the fixed part for being fixed on mounting guide rail, the another side of described safety guard fixed part is dorsad provided with the concave part for docking contact chip, described safety guard is also provided with the wire connecting portion connecting outside line for melt, described wire connecting portion is arranged near concave part, run through between described transverse slat and base and have inverted trapezoidal passage, described inverted trapezoidal passage refers to insert to plug base in safety guard in order to operating personnel four, face when accommodating base just to inverted trapezoidal passage offers inverted trapezoidal breach with described safety guard, the shape of described inverted trapezoidal breach is consistent with the shape of inverted trapezoidal passage.
Wherein, described contact chip is two " U " type contact chips, is separately positioned on the two ends of base, and the length of described contact blade pin is greater than height when melt is configured at base, and the part that described contact chip exceeds melt embeds concave part when mounted.Described fixed part comprises fixture block and is opened in draw-in groove and the location notch of fixture block both sides, and safety guard is fixed on corresponding mounting guide rail by fixture block, draw-in groove and location notch by described fixed part.
In the safety guard vertical view shown in Fig. 3, described concave part is arranged on the two ends of safety guard, described concave part comprises projection and is opened in the groove at projection two ends, the spacing of described two grooves equals the spacing contacting blade pin, run through the cylinder having entrance hole centered by described wire connecting portion, described entrance hole is used for outside line and connects melt.
Accompanying drawing explanation
Fig. 1 is the fuse structure schematic diagram of band safety guard;
Fig. 2 is that the fuse of band safety guard coordinates schematic diagram;
Fig. 3 is safety guard vertical view;
Fig. 4 is the structural representation of fixed part.
In figure: 1, safety guard; 11, fixed part; 111, draw-in groove; 112, fixture block; 113, location notch; 114, jump ring; 12, concave part; 121, groove; 13, wire connecting portion; 2, base; 21, transverse slat; 22, contact chip; 3, melt.
Embodiment
Traditional fuse base is all open, comprises pedestal, is fixed on pedestal by melt during application, but when following three kinds of situations appear in melt: 1. melt quality existing problems; 2. melt type selecting is unreasonable, and breaking capacity can not meet the maximum failed shorted capacity of circuit; 3. the melt arcing time is long, causes rushing down outside arc light, causes arc short-circuit.Melt will explode, and blasts when using above-mentioned fuse base 2, and owing to not arranging any safety device, easily cause injury operating personnel, there is certain potential safety hazard.
For the problems referred to above, the utility model proposes a kind of fuse of band safety guard of new structure, the fuse of this band safety guard comprises safety guard 1, base 2 and melt 3, described base 2 is removably connected to safety guard 1, the one side of described base 2 is provided with for connecting melt and docking the contact chip 22 of safety guard 1, the another side of described base 2 is provided with and facilitates it to plug transverse slat 21 in safety guard 1, the one side of described safety guard 1 base 2 dorsad is when mounted provided with the fixed part 11 for being fixed on mounting guide rail, described safety guard 1 is provided with the concave part 12 of docking contact chip 22 relative to the another side arranging fixed part 11, the two ends that described safety guard 1 is provided with concave part 12 are provided with the wire connecting portion 13 connecting outside line for melt, run through between described transverse slat 21 and base 2 and have inverted trapezoidal passage, described inverted trapezoidal passage refers to insert to plug base 2 in safety guard 1 in order to operating personnel four, face when accommodating base 2 just to inverted trapezoidal passage offers inverted trapezoidal breach with described safety guard 1, the shape of described inverted trapezoidal breach is consistent with the shape of inverted trapezoidal passage.
Wherein, described contact chip 22 is two " U " type contact chips 22, be separately positioned on the two ends of base 2, the length of described contact chip 22 pin is greater than height when melt is configured at base 2, and the part that described contact chip 22 exceeds melt is removably connected to concave part 12 when mounted.Described fixed part 11 comprises fixture block 112 and is opened in draw-in groove 111 and the location notch 113 of fixture block 112 both sides, and safety guard 1 is fixed on corresponding mounting guide rail by fixture block 112, draw-in groove 111 and location notch 113 by described fixed part 11.
When base 2 will be dismantled, refer to penetrate in inverted trapezoidal passage by four, the direction force of past safety guard 1 dorsad, because safety guard 1 is fixed on mounting guide rail by fixed part 11, therefore in force process, make base 2 and safety guard 1 depart from, thus take out base 2, then melt is installed on contact chip 22, the height of this contact chip 22 is greater than height when melt is installed on base 2, and after the installation is complete, base 2 is turned back to again to safety guard 1, owing to being provided with the concave part 12 suitable with contact chip 22 in safety guard 1, therefore when base 2 inserts, the part that its contact chip 22 exceeds melt can be inserted in the groove 121 of concave part 12, complete the process putting melt like this.
Safety guard 1 both sides of the fuse of band safety guard of the present utility model are provided with wire connecting portion 13, run through the cylinder having entrance hole centered by described wire connecting portion 13, and described entrance hole is used for outside line and connects melt.When melt installation described above, outer lead is worn in safety guard 2 through entrance hole, and contact is on contact chip 22, and power on after connection external circuit, fuse just can normally work.Fuse is a kind of overcurrent protective device, when transshipping or short circuit current passes through fuse, fuses because himself heating, thus a kind of electrical equipment of point deenergizing, but fuse operationally also there will be the situation of blast.
Due to base 2 be arranged on safety guard 1 time, melt and the external world isolate, even if fuse is because of following three problems: 1. melt quality has problems; 2. melt type selecting is unreasonable, and breaking capacity can not meet the maximum failed shorted capacity of circuit; 3. the melt arcing time is long, causes rushing down outside arc light, causes arc short-circuit, and the situation that an explosion occurred also receives the isolation of safety guard 1, blast is not outwardly expanded, thus relieves potential safety hazard, reaches BS standard.
The material of described safety guard 1 is polyamide (PA66), and polyamide (PA66) has following characteristic: density (g/cm3): 1.10-1.14; Hot strength (MPa): 60.0-80.0; Rockwell hardness 118; Fusing point 252 DEG C; Brittle temperature-30 DEG C; Heat decomposition temperature is greater than 350 DEG C; Continuous heat-resisting 80-120 DEG C; Impact strength (kJ/m2): 60-100; Static bending intensity (MPa): 1 00-120; Martin heat resistance (DEG C) 50-60; The modulus of elasticity in static bending (MPa): 2000 ~ 3000; Specific insulation (Ω cm): 1.83 × 1015; Equilibrium water absorption 2.5%; Dielectric constant 1.63.Visible polyamide (PA66) has good high-temperature stability and insulation characterisitic, can well melt must be isolated.
In sum, the utility model is by arranging safety guard, base and melt, construct novel fuse, by arranging fixed part to be fixed on mounting guide rail on safety guard, base is fixed on safety guard, by arranging transverse slat on base to be plugged in safety guard with operating personnel, when base is connected to safety guard by arranging contact chip with fixing melt on base, melt is isolated from the outside, relieves the potential safety hazard produced because of melt blast.
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 (8)
1. the fuse with safety guard, comprise melt and base, described melt is arranged on base, it is characterized in that: described fuse also comprises the safety guard be isolated from the outside by melt, described safety guard is fixed on mounting guide rail when mounted, and described base is removably connected to safety guard.
2. the fuse of band safety guard according to claim 1, it is characterized in that: the one side of described base is provided with for connecting melt and docking the contact chip of safety guard, the one side that described base is provided with contact chip is dorsad provided with the transverse slat being convenient to be plugged by base in safety guard.
3. the fuse of band safety guard according to claim 1, it is characterized in that: the one side of described safety guard base dorsad is when mounted provided with the fixed part for being fixed on mounting guide rail, the one side of described safety guard fixed part is dorsad provided with the concave part for docking contact chip, described safety guard is also provided with the wire connecting portion connecting outside line for melt, described wire connecting portion is arranged near concave part.
4. the fuse of band safety guard according to claim 2, it is characterized in that: described contact chip is " U " type contact chip, the length of described contact blade pin is greater than height when melt is configured at base, and the part that described contact chip exceeds melt embeds concave part when mounted.
5. the fuse of band safety guard according to claim 3, it is characterized in that: described concave part is arranged on the two ends of safety guard, described concave part comprises projection and is opened in the groove at projection two ends, and the spacing of described two grooves equals the spacing contacting blade pin.
6. the fuse of band safety guard according to claim 3, is characterized in that: described fixed part comprises fixture block, location notch and is opened in the draw-in groove of fixture block both sides, and safety guard is fixed on mounting guide rail by fixture block, draw-in groove and location notch by described fixed part.
7. the fuse of band safety guard according to claim 3, is characterized in that: run through the cylinder having entrance hole centered by described wire connecting portion.
8. the fuse of band safety guard according to claim 6, is characterized in that: be provided with jump ring in described location notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520029024.XU CN204289340U (en) | 2015-01-15 | 2015-01-15 | A kind of fuse with safety guard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520029024.XU CN204289340U (en) | 2015-01-15 | 2015-01-15 | A kind of fuse with safety guard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204289340U true CN204289340U (en) | 2015-04-22 |
Family
ID=52872474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520029024.XU Expired - Fee Related CN204289340U (en) | 2015-01-15 | 2015-01-15 | A kind of fuse with safety guard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204289340U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379687A (en) * | 2019-08-08 | 2019-10-25 | 黄山泰客轨道电气有限公司 | A kind of fuse mounting device |
-
2015
- 2015-01-15 CN CN201520029024.XU patent/CN204289340U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379687A (en) * | 2019-08-08 | 2019-10-25 | 黄山泰客轨道电气有限公司 | A kind of fuse mounting device |
| CN110379687B (en) * | 2019-08-08 | 2021-04-09 | 黄山泰客轨道电气有限公司 | Fuse installation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150422 Termination date: 20210115 |