Mutual inductor capable of being stably welded
By setting pins and heat dissipation holes on the current transformer, the problems of easy breakage of lead wires and poor heat dissipation are solved, thereby improving the stability and heat dissipation of the current transformer and extending its service life.
Patent Information
- Application Number
- CN202423046026.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-10
AI Technical Summary
The leads of small current transformers are prone to breakage or deformation, and poor heat dissipation leads to a high failure rate and short service life.
A current transformer structure with a pin and heat dissipation holes was designed. The pin is used to enhance welding stability, and the heat dissipation holes are used to improve heat dissipation efficiency.
This improves the stability and heat dissipation capacity of the current transformer, avoids lead wire breakage and heat accumulation, and extends its service life.
Smart Images
Figure CN223513744U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of current transformers, specifically to current transformers that can be stably welded. Background Technology
[0002] Miniature instrument transformers mainly refer to single-phase transformers below 20kVA and three-phase transformers below 50kVA. Their characteristics include small size, low cost, and minimal wiring requirements. Miniature instrument transformers generally have lower load rates and utilization rates. The inductive loads they supply typically lack capacitive compensation. Miniature instrument transformers are commonly used in factory electrical control systems. With the widespread application of electronic components in power plant control, monitoring, and automatic circuits, the use of miniature instrument transformers is becoming increasingly widespread.
[0003] However, existing small current transformers still have the following drawbacks:
[0004] 1) During use, small current transformers need to be mounted on circuit boards for fixation. Usually, direct soldering is used to solder the leads of the current transformer to the circuit board. Because the leads of the current transformer are small, they are easily broken or deformed by external forces during use, which causes the current transformer to break off from the circuit board, affecting the normal operation of the circuit board and resulting in poor stability.
[0005] 2) The housing of small current transformers in the prior art is usually an integral molded structure. The housing and the base are sealed, which makes it impossible to dissipate heat and allow air to circulate. The current transformer usually generates a lot of heat when it is working. If the heat is not dissipated, small current transformers are prone to high failure rate and short service life. Heat accumulation can easily lead to damage to the current transformer. Summary of the Invention
[0006] In order to overcome the shortcomings of existing technical solutions, this utility model provides a current transformer that can be stably welded, which can effectively solve the technical problems that existing current transformers are prone to lead wire breakage or deformation under external force, and that current transformers are prone to heat accumulation, causing damage to the current transformer.
[0007] The technical solution adopted by this utility model to solve its technical problem is: a stable weldable current transformer, including a base, a housing installed on the top surface of the base, and a current transformer assembly installed inside the housing. The current transformer assembly includes an iron core, a primary winding coil, and a secondary winding coil. The primary winding coil and the secondary winding coil are both wound on the surface of the iron core. The base has grooves on both sides, and the housing has pins on both sides that cooperate with the grooves. The pins extend to the bottom of the housing, and the base has heat dissipation holes at the bottom.
[0008] Furthermore, the top surface of the base is provided with a plurality of lead pins, all of which extend to the bottom of the base and are parallel to each other.
[0009] Furthermore, several of the lead wires are respectively connected to the primary winding coil and the secondary winding coil.
[0010] Furthermore, the height of each lead pin is greater than the height of the pin portion.
[0011] Furthermore, the iron core is annular.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] 1) The current transformer of this utility model can be stably welded. By setting the pin parts on both sides of the housing, the support and fixation can be strengthened after welding, which greatly improves the stability of the current transformer and avoids the current transformer from being broken or deformed by external force, and avoids the current transformer from being disconnected on the circuit board.
[0014] 2) The current transformer of this utility model can be stably welded. By opening heat dissipation holes at the bottom of the base, the current transformer can be easily dissipated, thereby improving the heat dissipation capacity of the current transformer and avoiding heat accumulation that could damage the current transformer. Attached Figure Description
[0015] Figure 1 This is a perspective view of the current transformer that can be stably welded according to this utility model.
[0016] Figure 2 This is a schematic diagram of the internal structure of the current transformer that can be stably welded according to this utility model;
[0017] Figure 3 This is an exploded view of the base and current inductor components in the current transformer that can be stably welded according to this utility model.
[0018] Numbering on the map:
[0019] 1-Housing, 2-Base, 3-Mutual inductance assembly, 301-Iron core, 302-Primary winding coil, 303-Secondary winding coil, 4-Lead pin, 5-Heat dissipation hole, 6-Pin part, 7-Groove part. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] like Figures 1-3 As shown, the stable weldable current transformer includes a base 2, a housing 1 mounted on the top surface of the base 2, and a current transformer assembly 3 mounted inside the housing 1. The current transformer assembly 3 includes an iron core 301, a primary winding coil 302, and a secondary winding coil 303. Both the primary winding coil 302 and the secondary winding coil 303 are wound around the surface of the iron core 301. The base 2 has grooves 7 on both sides, and the housing 1 has pins 6 on both sides that cooperate with the grooves 7. The pins 6 extend to the bottom of the housing 1. The pin 6 fits perfectly with the groove 7. When the transformer is in use, the lead pin 4 of the transformer is soldered to the circuit board, and the pin 6 is also soldered to the circuit board. This makes the transformer firmly fixed to the circuit board, which greatly improves the stability of the transformer and prevents the lead pin 4 from breaking or deforming due to external force, thus preventing the transformer from disconnecting from the circuit board. The bottom of the base 2 is provided with heat dissipation holes 5, which are circular or elliptical, so as to quickly dissipate the heat generated by the transformer assembly 3 into the air.
[0022] The top surface of the base 2 is equipped with a plurality of lead pins 4, which extend to the bottom of the base 2. The lead pins 4 are parallel to each other and are respectively connected to the primary winding coil 302 and the secondary winding coil 303. The height of each lead pin 4 is greater than the height of the pin portion 6. The iron core 301 is annular.
[0023] This utility model provides a stable weldable transformer. By providing pins 6 on both sides of the housing 1, the transformer can be reinforced and fixed after welding, greatly improving its stability and preventing the lead pins 4 from breaking or deforming due to external forces. This also prevents the transformer from disconnecting from the circuit board. Furthermore, by opening heat dissipation holes 5 at the bottom of the base 2, the transformer can dissipate heat, improving its heat dissipation capacity and preventing heat accumulation that could damage the transformer.
[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A stable weldable current transformer, comprising a base, a housing mounted on the top surface of the base, and a current transformer assembly mounted inside the housing, the current transformer assembly comprising an iron core, a primary winding coil, and a secondary winding coil, wherein the primary winding coil and the secondary winding coil are both wound around the surface of the iron core, characterized in that: The base has grooves on both sides, and the housing has pins on both sides that cooperate with the grooves. The pins extend to the bottom of the housing, and the base has heat dissipation holes at the bottom.
2. The current transformer capable of stable welding according to claim 1, characterized in that: The top surface of the base is equipped with a plurality of lead pins, all of which extend to the bottom of the base and are parallel to each other.
3. The current transformer capable of stable welding according to claim 2, characterized in that: Several of the aforementioned lead pins are respectively connected to the primary winding coil and the secondary winding coil.
4. The current transformer capable of stable welding according to claim 2, characterized in that: The height of each lead pin is greater than the height of the pin portion.
5. The current transformer capable of stable welding according to any one of claims 1-4, characterized in that: The iron core is circular.