CN211125216U - Current-limiting rheostat with good heat dissipation effect - Google Patents
Current-limiting rheostat with good heat dissipation effect Download PDFInfo
- Publication number
- CN211125216U CN211125216U CN202020186461.3U CN202020186461U CN211125216U CN 211125216 U CN211125216 U CN 211125216U CN 202020186461 U CN202020186461 U CN 202020186461U CN 211125216 U CN211125216 U CN 211125216U
- Authority
- CN
- China
- Prior art keywords
- insulating ceramic
- resistance wire
- flat insulating
- current
- limiting
- 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.)
- Active
Links
Images
Landscapes
- Details Of Resistors (AREA)
Abstract
The utility model discloses a current-limiting rheostat that radiating effect is good, which comprises a housin, the casing top is fixed with the terminal block, the inside resistance wire mechanism that is fixed with of casing, resistance wire mechanism includes two flat insulating ceramic section of thick bamboos, sets up in two backup pad between the flat insulating ceramic section of thick bamboo and winding are in resistance wire on the flat insulating ceramic section of thick bamboo, the resistance wire is connected with the terminal block, casing side equipartition has the louvre. The utility model adopts the above structure a current-limiting rheostat that radiating effect is good, a casing internal insulation ceramic section of thick bamboo is a flat insulating ceramic section of thick bamboo, has increased the area of contact of resistance wire with an insulating ceramic section of thick bamboo, and the radiating effect is better.
Description
Technical Field
The utility model relates to a rheostat especially relates to a current-limiting rheostat that radiating effect is good.
Background
The current limiting resistor is basic equipment of a railway signal track circuit, is arranged in a transformer box beside a railway, and ensures that the receiving end voltage reaches a specified value by adjusting the secondary tap voltage of a transmitting end track transformer and the resistance value of a fixed tap rheostat, and the track circuit works reliably.
The insulating ceramic cylinders in the conventional rheostat are cylinders, the contact area between the cylinders and the resistance wire is small, and meanwhile, heat dissipation measures are only carried out through heat dissipation holes, so that the heat dissipation effect is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a current-limiting rheostat that radiating effect is good, a casing internal insulation ceramic section of thick bamboo is a flat insulating ceramic section of thick bamboo, has increased the area of contact of resistance wire with an insulating ceramic section of thick bamboo, and the radiating effect is better.
In order to achieve the purpose, the utility model provides a current-limiting rheostat that radiating effect is good, which comprises a housin, the casing top is fixed with the terminal block, the inside resistance wire mechanism that is fixed with of casing, resistance wire mechanism includes two flat insulating ceramic section of thick bamboos, sets up in two backup pad and winding between the flat insulating ceramic section of thick bamboo are in resistance wire on the flat insulating ceramic section of thick bamboo, the resistance wire is connected with the terminal block, casing side equipartition has the louvre.
Preferably, the side plate of the shell is provided with a connecting plate at the bottom.
Preferably, the two flat insulating ceramic cylinders are arranged up and down, the outer surfaces of the flat insulating ceramic cylinders are provided with resistance wire grooves, positioning grooves are formed in two sides of each flat insulating ceramic cylinder, and two ends of the supporting plate are arranged in the positioning grooves.
Preferably, two ends of the flat insulating ceramic cylinder are fixedly connected with the shell through bolts.
Preferably, the heat dissipation holes are louver windows, and a dust screen is fixed on the inner side of the shell.
Therefore, the utility model adopts the above structure a current-limiting rheostat that radiating effect is good, the insulating ceramic section of thick bamboo of casing internal insulation is a flat insulating ceramic section of thick bamboo, has increased the area of contact of resistance wire with an insulating ceramic section of thick bamboo, and the resistance wire is fixed reliable, and the radiating effect is better.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic view of a current-limiting rheostat with good heat dissipation effect of the present invention;
FIG. 2 is a schematic view of the structure of the flat insulating ceramic cylinder of the present invention;
fig. 3 is a partial sectional view of the flat insulating ceramic cylinder of the present invention.
Reference numerals
1. A housing; 11. heat dissipation holes; 2. a terminal plate; 3. a connecting plate; 4. a resistance wire mechanism; 41. a flat insulating ceramic cylinder; 411. a resistance wire slot; 412. positioning a groove; 42. a resistance wire; 43. and a support plate.
Detailed Description
Examples
Fig. 1 is the utility model relates to a current-limiting rheostat that radiating effect is good structure schematic diagram, fig. 2 is the utility model discloses flat insulating ceramic section of thick bamboo structure schematic diagram, fig. 3 is the utility model discloses flat insulating ceramic section of thick bamboo local cross-section, as shown in the figure, a current-limiting rheostat that radiating effect is good includes casing 1, and casing 1 top is fixed with terminal block 2. The side plate of the shell 1 is provided with a connecting plate 3 at the bottom. The side of the housing 1 is uniformly provided with heat dissipation holes 11, the heat dissipation holes 11 are louver windows in this embodiment, and a dust screen (not shown) is fixed inside the housing 1.
The resistance wire mechanism 4 is fixed in the shell 1, the resistance wire mechanism 4 comprises two flat insulating ceramic cylinders 41, a support plate 43 arranged between the two flat insulating ceramic cylinders 41 and a resistance wire 42 wound on the flat insulating ceramic cylinders 41, the resistance wire 42 is connected with the terminal plate 2, the two flat insulating ceramic cylinders 41 are arranged up and down, and the flat insulating ceramic cylinders 41 increase the contact area of the resistance wire 42 and are beneficial to heat dissipation. The outer surface of the flat insulating ceramic cylinder 41 is provided with a resistance wire slot 411 which is beneficial to fixing the resistance wire 42. The positioning grooves 412 are formed on two sides of the flat insulating ceramic cylinder 41, and two ends of the supporting plate 43 are disposed in the positioning grooves 412. Two ends of the flat insulating ceramic cylinder 41 are fixedly connected with the shell 1 through bolts.
Therefore, the utility model adopts the above structure a current-limiting rheostat that radiating effect is good, the insulating ceramic section of thick bamboo of casing internal insulation is a flat insulating ceramic section of thick bamboo, has increased the area of contact of resistance wire with an insulating ceramic section of thick bamboo, and the resistance wire is fixed reliable, and the radiating effect is better.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the technical solution of the present invention can still be modified or replaced by other equivalent means, and the modified technical solution can not be separated from the spirit and scope of the technical solution of the present invention.
Claims (5)
1. The utility model provides a current-limiting rheostat that radiating effect is good, includes the casing, the casing top is fixed with terminal board, its characterized in that: the resistance wire mechanism is fixed in the shell and comprises two flat insulating ceramic cylinders, support plates arranged between the two flat insulating ceramic cylinders and a resistance wire wound on the flat insulating ceramic cylinders, the resistance wire is connected with a terminal board, and heat dissipation holes are evenly distributed in the side face of the shell.
2. The current-limiting varistor as claimed in claim 1, wherein: the bottom of the side plate of the shell is provided with a connecting plate.
3. The current-limiting varistor as claimed in claim 1, wherein: the two flat insulating ceramic cylinders are arranged up and down, resistance wire grooves are formed in the outer surfaces of the flat insulating ceramic cylinders, positioning grooves are formed in the two sides of each flat insulating ceramic cylinder, and the two ends of the supporting plate are arranged in the positioning grooves.
4. The current-limiting varistor as claimed in claim 1, wherein: and two ends of the flat insulating ceramic cylinder are fixedly connected with the shell through bolts.
5. The current-limiting varistor as claimed in claim 1, wherein: the heat dissipation holes are louver windows, and a dust screen is fixed on the inner side of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020186461.3U CN211125216U (en) | 2020-02-19 | 2020-02-19 | Current-limiting rheostat with good heat dissipation effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020186461.3U CN211125216U (en) | 2020-02-19 | 2020-02-19 | Current-limiting rheostat with good heat dissipation effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211125216U true CN211125216U (en) | 2020-07-28 |
Family
ID=71705690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020186461.3U Active CN211125216U (en) | 2020-02-19 | 2020-02-19 | Current-limiting rheostat with good heat dissipation effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211125216U (en) |
-
2020
- 2020-02-19 CN CN202020186461.3U patent/CN211125216U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114334458B (en) | SMD high-voltage capacitor | |
| CN211125216U (en) | Current-limiting rheostat with good heat dissipation effect | |
| CN114203393B (en) | Transformer skeleton for electric vehicle charger | |
| CN203799875U (en) | Super-capacitor with oversize current capability | |
| CN216928259U (en) | Aluminum wire inductor | |
| CN213124092U (en) | Novel current transformer | |
| CN207781361U (en) | A kind of high-current inductor | |
| CN219873505U (en) | Chip heat radiation structure | |
| CN210722670U (en) | Transformer with built-in heat dissipation channel | |
| CN211507247U (en) | Super-power resistor convenient for convection type heat dissipation | |
| CN220191065U (en) | PTC heating rod | |
| CN110828106A (en) | Low-frequency transformer with built-in shielding layer | |
| CN212342478U (en) | Paster electric capacity with graphite alkene conducting layer | |
| CN215001094U (en) | High-temperature-resistant LED lamp strip | |
| CN218941590U (en) | High-power consumption device heat conduction structure | |
| CN212625106U (en) | Laminated bus-bar type winding and transformer using same | |
| CN221327454U (en) | Low-resistance damping filtering aluminum shell resistor | |
| CN212724705U (en) | Electromagnetic buzzer with heat dissipation function | |
| CN209266121U (en) | A kind of novel slice type resistor | |
| CN212542872U (en) | Intelligent protection connector with gas discharge tube | |
| CN210432022U (en) | Heat dissipation type printed wiring board | |
| CN210167236U (en) | Heat dissipation type high power inductance | |
| CN212062143U (en) | Fixing base for iron core coil | |
| CN218868225U (en) | Bluetooth chip with dustproof function | |
| CN213752166U (en) | Resistor with a resistor element |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |