CN214312802U - Multi-point fusing type low-temperature fusing wire-wound resistor - Google Patents
Multi-point fusing type low-temperature fusing wire-wound resistor Download PDFInfo
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- CN214312802U CN214312802U CN202120356198.2U CN202120356198U CN214312802U CN 214312802 U CN214312802 U CN 214312802U CN 202120356198 U CN202120356198 U CN 202120356198U CN 214312802 U CN214312802 U CN 214312802U
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- Prior art keywords
- wall
- fusing
- wire
- cap
- porcelain rod
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 47
- 239000002184 metal Substances 0.000 claims abstract description 47
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 28
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 27
- 239000000956 alloy Substances 0.000 claims abstract description 27
- 239000011241 protective layer Substances 0.000 claims abstract description 12
- 238000003466 welding Methods 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 19
- 239000003973 paint Substances 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 2
- 239000012212 insulator Substances 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 3
- 239000012634 fragment Substances 0.000 abstract 2
- 238000002788 crimping Methods 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910001006 Constantan Inorganic materials 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- HPDFFVBPXCTEDN-UHFFFAOYSA-N copper manganese Chemical compound [Mn].[Cu] HPDFFVBPXCTEDN-UHFFFAOYSA-N 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of electrical elements, concretely relates to multipoint fusing type low temperature fusing wire-wound resistor, including porcelain rod, left cap and right cap, the bar groove has been seted up to the surface of porcelain rod, bar inslot wall is fixed with a plurality of reset spring, the outer end of each reset spring all is fixed with the shell fragment, the outer wall of porcelain rod has been wound and has been connect with the alloy resistance wire, be equipped with a plurality of fusing subassembly that sets up side by side on the alloy resistance wire, fusing subassembly corresponds the crimping respectively and is in the outer wall of shell fragment, the left pot head of porcelain rod is equipped with left cap, the apron outer wall welding of left cap has first metal lead, the right-hand member cover of porcelain rod is equipped with right cap, the apron outer wall welding of right cap has the second metal lead, the outer wall common coating of porcelain rod and alloy resistance wire has the protective layer; the utility model discloses can ensure that the resistor can fuse immediately, avoid producing the potential safety hazard, the design of a plurality of fusing subassemblies series connection has also ensured that the resistor can accomplish the fusing, avoids appearing the phenomenon that the fusing became invalid.
Description
Technical Field
The utility model relates to an electrical component technical field, concretely relates to multiple spot fusing formula low temperature fusing wire-wound resistor.
Background
With the rapid development of electronic technology, resistors are still continuously advancing as an essential component in electronic components. The resistor is generally directly called as a resistor in daily life, the magnitude of the resistance of the resistive element is generally related to temperature, material, length, and also cross-sectional area, and the physical quantity that measures the magnitude of the resistance affected by temperature is the temperature coefficient, which is defined as the percentage of the change in resistance value per 1 ℃ rise in temperature. The main physical characteristic of the resistor is that the electric energy is changed into heat energy, and the resistor can also be called as an energy consumption element, and the electric current generates internal energy through the energy consumption element. The resistor generally plays a role in voltage division and shunt in the circuit.
The wire-wound resistor is made up by winding nickel-chromium wire, manganese-copper wire and constantan wire on insulating skeleton, and the insulating skeleton is made up by using ceramic, plastics and metal coated with insulating layer and can be made into various forms of tube form and flat form. The wire-wound resistor has the characteristics of high resistance precision, high power, low working noise, stability, reliability, high temperature resistance and the like.
The current wire-wound resistor is required to meet the requirement of lightning surge impact resistance, and at the same time, under a large current state, a rectifier diode and a filter capacitor of a power supply part are mainly short-circuited, namely, the current passing through the wire-wound resistor is more than 50 times of the rated value of the wire-wound resistor, and the wire-wound resistor is disconnected within a specified time. However, when an abnormal current is too small in a circuit, namely the wire-wound resistor has 1.5-2 times of rated current, on the premise of ensuring sufficient lightning surge, any resistor in the current market cannot be fused in time (including a quick fusing type), so that thermal balance is achieved, the resistor can generate heat to generate high temperature, the surface temperature of the resistor exceeds 600 ℃, a plastic part is burnt, potential safety hazards are brought, in addition, a form of externally connecting a temperature fuse is adopted, the temperature sensing error is large, and the structure occupies a large space.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the problem that the background art provided, a multiple spot fusing formula low temperature fusing wire-wound resistor has been designed.
The utility model discloses a realize through following technical scheme:
a multipoint fusing type low-temperature fusing wire-wound resistor comprises a porcelain rod, a left cap and a right cap, wherein a strip-shaped groove is formed in the outer surface of the porcelain rod, a plurality of reset springs are fixed on the inner wall of the strip-shaped groove, an elastic sheet is fixed at the outer end of each reset spring, an alloy resistance wire is wound on the outer wall of the porcelain rod, one end of the alloy resistance wire is welded with the outer wall of a cylinder of the left cap, the other end of the alloy resistance wire is welded with the outer wall of a cylinder of the right cap, a plurality of fusing components arranged side by side are arranged on the alloy resistance wire, the fusing components are respectively and correspondingly pressed on the outer wall of the elastic sheet, the left end of the porcelain rod is sleeved with the left cap, a first metal lead is welded on the outer wall of a cover plate of the left cap, the right end of the porcelain rod is sleeved with the right cap, and a second metal lead is welded on the outer wall of the cover plate of the right cap, and protective layers are coated on the outer walls of the porcelain rod and the alloy resistance wire.
As a further improvement of the above scheme, the fuse assembly includes an upper contact, a lower contact, and a fusible metal block, the fusible metal block is wrapped on the outer walls of the upper contact and the lower contact, and the upper contact and the lower contact are separately disposed.
As a further improvement of the above scheme, the spring plate is made of an insulating material, and a clamping groove for clamping the fusible metal block is formed in the front surface of the spring plate.
As a further improvement of the above scheme, the fusible metal block has any one of a cylindrical shape, a spherical shape and a square column shape, and the shape of the slot matches with the shape of the fusible metal block.
As a further improvement of the above solution, the left cap and the right cap have the same size and are made of iron, and the specifications of the left cap and the right cap are as follows: an inner diameter of 2.50 mm, a height of 1.80 mm and a thickness of 0.25 mm.
As a further improvement of the scheme, the wire diameters of the first metal lead and the second metal lead are both 0.6mm, the lengths of the first metal lead and the second metal lead are both 22mm, and the wire diameter of the alloy resistance wire is 0.08 mm.
As a further improvement of the above scheme, the protective layer includes fusing layer, barrier layer and insulating paint layer from inside to outside in proper order, insulating paint layer with the cylinder outer wall of left cap, right cap keeps flushing, the outer wall of insulating paint layer is equipped with the color wheel that a plurality of is used for the mark resistance.
Compared with the prior art, the beneficial effects of the utility model are that:
in the utility model, the outer surface of the porcelain rod is provided with a strip-shaped groove, the inner wall of the strip-shaped groove is fixed with a plurality of reset springs, the outer end of each reset spring is fixed with a spring plate, the alloy resistance wire is provided with a plurality of fuse components arranged side by side, the fuse components are respectively pressed on the outer wall of the spring plate correspondingly, at the moment, the reset springs are all in a compressed state, when the resistor is heated due to abnormal small current passing through the resistor, the current can not reach the current for fusing the resistor, the resistor is continuously heated, the fusible metal block in the fuse components can be continuously heated and fused, so that the upper contact and the lower contact in the fuse components are mutually disconnected, and the reset springs are restored to a natural state from the compressed state after the fusible metal block is fused, thereby further separating the upper contact from the lower contact, ensuring that the resistor can be fused immediately, avoiding potential safety hazards, in addition, due to the design that a plurality of fusing components are connected in series, the resistor can be fused, and the fusing failure phenomenon is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is an exploded view of the present invention;
FIG. 2 is a schematic structural view of the protective layer of the present invention before coating;
FIG. 3 is a schematic view of a three-dimensional structure of the porcelain rod of the present invention;
FIG. 4 is a schematic diagram of an internal structure of the fuse assembly of the present invention.
The welding wire comprises a ceramic rod 1, a left cap 2, a right cap 3, a strip groove 4, a reset spring 5, a spring plate 6, an alloy resistance wire 7, a fusing component 8, an upper contact 801, a lower contact 802, a fusible metal block 803, a first metal lead 9, a second metal lead 10, a protective layer 11, a clamping groove 12 and a color ring 13.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The present invention will be further explained with reference to the accompanying drawings.
As shown in figures 1 and 2, the multi-point fusing type low-temperature fusing wire-wound resistor comprises a porcelain rod 1, a left cap 2 and a right cap 3, wherein the outer surface of the porcelain rod 1 is provided with a strip-shaped groove 4, the inner wall of the strip-shaped groove 4 is fixed with a plurality of reset springs 5, the outer end of each reset spring 5 is fixed with a spring plate 6, the outer wall of the porcelain rod 1 is wound with an alloy resistance wire 7, one end of the alloy resistance wire 7 is welded with the outer wall of a cylinder of the left cap 2, the other end of the alloy resistance wire 7 is welded with the outer wall of the cylinder of the right cap 3, the alloy resistance wire 7 is provided with a plurality of fusing components 8 which are arranged side by side, the fusing components 8 are respectively and correspondingly pressed on the outer wall of the spring plates 6, the left end of the porcelain rod 1 is sleeved with the left cap 2, the outer wall of a cover plate of the left cap 2 is welded with a first metal lead 9, the right end of the porcelain rod 1 is sleeved with the right cap 3, the outer wall of the cover plate of the right cap 3 is welded with a second metal lead 10, the outer walls of the porcelain rod 1 and the alloy resistance wire 7 are coated with a protective layer 11, the protective layer 11 sequentially comprises a fusing layer, a blocking layer and an insulating paint layer from inside to outside, the insulating paint layer is flush with the cylindrical outer walls of the left cap 2 and the right cap 3, and the outer wall of the insulating paint layer is provided with a plurality of color rings 13 for marking resistance; left cap 2 is the same with right cap 3 size and is made by iron, and left cap 2 is the specification of right cap 3: the inner diameter is 2.50 mm, the height is 1.80 mm, and the thickness is 0.25 mm; the wire diameters of the first metal lead wire 9 and the second metal lead wire 10 are both 0.6mm, the lengths of the first metal lead wire and the second metal lead wire are both 22mm, and the wire diameter of the alloy resistance wire 7 is 0.08 mm.
As shown in fig. 4, the fuse assembly 8 includes an upper contact 801, a lower contact 802, and a fusible metal block 803, the fusible metal block 803 is wrapped around the outer walls of the upper contact 801 and the lower contact 802, the upper contact 801 and the lower contact 802 are separately disposed, the fusible metal block 803 has any one of a cylindrical shape, a spherical shape, and a square-column shape, and the shape of the card slot 12 matches the shape of the fusible metal block 803.
As shown in fig. 3, the elastic sheet 6 is made of an insulating material, and a slot 12 for clamping the fusible metal block 803 is formed on the front surface of the elastic sheet 6.
The utility model discloses a production process of multipoint fusing formula low temperature fusing wire-wound resistor includes following step:
a. pressing a cap: firstly, respectively installing a left cap 2 and a right cap 3 at two ends of a porcelain rod 1 in a matching way through cap pressing equipment;
b. butt-welding: welding a first metal lead 9 on the outer wall of the cover plate of the left cap 2, and welding a second metal lead 10 on the outer wall of the cover plate of the right cap 3;
c. winding: welding one end of an alloy resistance wire 7 with a fusing component 8 on the outer wall of the cylinder of the left cap 2, then winding by using automatic winding equipment, so that the outer end of each fusing component 8, which is correspondingly clamped with the reset spring 5, is fixed on an elastic sheet 6, and then welding the other end of the alloy resistance wire 7 on the outer wall of the cylinder of the right cap 3;
d. coating: coating a protective layer 11 on the common outer wall of the porcelain rod 1 and the alloy resistance wire 7, wherein the protective layer 11 sequentially comprises a fusing layer, a barrier layer and an insulating paint layer from inside to outside;
e. color marking: applying a color ring mark on the outer wall of the protective layer 11 so as to identify the resistance value;
f. and (3) testing: the multipoint fusing type low-temperature fusing wire-wound resistor is subjected to resistance value precision test, and defective products are removed;
g. packaging: the product is packaged and then the packaged product flows into a finished product warehouse.
In the use process of the utility model, a strip-shaped groove 4 is arranged on the outer surface of the porcelain rod 1, a plurality of reset springs 5 are fixed on the inner wall of the strip-shaped groove 4, an elastic sheet 6 is fixed on the outer end of each reset spring 5, a plurality of fuse assemblies 8 arranged side by side are arranged on the alloy resistance wire 7, the fuse assemblies 8 are respectively pressed on the outer wall of the elastic sheet 6 correspondingly, wherein each fuse assembly comprises an upper contact 801, a lower contact 802 and a fusible metal block 803, the outer walls of the upper contact 801 and the lower contact 802 are jointly wrapped with the fusible metal block 803, when the resistor is heated due to abnormal small current passing through the resistor, the current can not reach the current for fusing the resistor, the resistor is continuously heated, the fusible metal block can be continuously heated and fused, so that the upper contact 801 and the lower contact 802 are mutually disconnected, and the reset springs 5 are restored to the natural state from the compressed state after the fusible metal block 803 is fused, thereby can further separate upper contact and lower contact, ensure that the resistor can fuse immediately, avoid producing the potential safety hazard, the design of a plurality of fusing subassemblies series connection has also ensured that the resistor can accomplish the fusing in addition, avoids appearing the phenomenon that the fusing became invalid.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a low temperature fusing wire-wound resistor of multiple spot fuse-link formula, includes insulator (1), left cap (2) and right cap (3), its characterized in that: the outer surface of the porcelain rod (1) is provided with a strip-shaped groove (4), the inner wall of the strip-shaped groove (4) is fixed with a plurality of reset springs (5), the outer end of each reset spring (5) is fixed with an elastic sheet (6), the outer wall of the porcelain rod (1) is wound with an alloy resistance wire (7), one end of the alloy resistance wire (7) is welded with the outer wall of a cylinder of the left cap (2), the other end of the alloy resistance wire (7) is welded with the outer wall of the cylinder of the right cap (3), the alloy resistance wire (7) is provided with a plurality of fusing components (8) which are arranged side by side, the fusing components (8) are respectively and correspondingly pressed on the outer wall of the elastic sheet (6), the left end of the porcelain rod (1) is sleeved with the left cap (2), the outer wall of a cover plate of the left cap (2) is welded with a first metal lead (9), the right-hand member cover of porcelain rod (1) is equipped with right cap (3), the welding of the apron outer wall of right cap (3) has second metal lead (10), the common coating of porcelain rod (1) and the outer wall of alloy resistance wire (7) has protective layer (11).
2. A multi-point fuse low temperature fuse wire-wound resistor as claimed in claim 1, wherein: the fusing component (8) comprises an upper contact (801), a lower contact (802) and a fusible metal block (803), the fusible metal block (803) is wrapped on the outer walls of the upper contact (801) and the lower contact (802) together, and the upper contact (801) and the lower contact (802) are arranged in a separated mode.
3. A multi-point fuse low temperature fuse wire-wound resistor as claimed in claim 2, wherein: the elastic sheet (6) is made of an insulating material, and a clamping groove (12) used for clamping the fusible metal block (803) is formed in the front surface of the elastic sheet (6).
4. A multi-point fuse low temperature fuse wire wound resistor as claimed in claim 3, wherein: the fusible metal block (803) is in any one of a cylindrical shape, a spherical shape and a square column shape, and the shape of the clamping groove (12) is matched with that of the fusible metal block (803).
5. A multi-point fuse low temperature fuse wire-wound resistor as claimed in claim 1, wherein: the left cap (2) and the right cap (3) are the same in size and made of iron, and the specifications of the left cap (2) and the right cap (3) are as follows: an inner diameter of 2.50 mm, a height of 1.80 mm and a thickness of 0.25 mm.
6. A multi-point fuse low temperature fuse wire-wound resistor as claimed in claim 1, wherein: the wire diameters of the first metal lead (9) and the second metal lead (10) are both 0.6mm, the lengths of the first metal lead and the second metal lead are both 22mm, and the wire diameter of the alloy resistance wire (7) is 0.08 mm.
7. A multi-point fuse low temperature fuse wire-wound resistor as claimed in claim 1, wherein: protective layer (11) are from inside to outside in proper order including fusing layer, barrier layer and insulating paint layer, insulating paint layer with the cylinder outer wall of left side cap (2), right cap (3) keeps flushing, the outer wall on insulating paint layer is equipped with color ring (13) that a plurality of is used for the mark resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120356198.2U CN214312802U (en) | 2021-02-06 | 2021-02-06 | Multi-point fusing type low-temperature fusing wire-wound resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120356198.2U CN214312802U (en) | 2021-02-06 | 2021-02-06 | Multi-point fusing type low-temperature fusing wire-wound resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214312802U true CN214312802U (en) | 2021-09-28 |
Family
ID=77833737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120356198.2U Expired - Fee Related CN214312802U (en) | 2021-02-06 | 2021-02-06 | Multi-point fusing type low-temperature fusing wire-wound resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214312802U (en) |
-
2021
- 2021-02-06 CN CN202120356198.2U patent/CN214312802U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210928 |
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| CF01 | Termination of patent right due to non-payment of annual fee |