Subminiature electric leakage mutual inductor module

Abstract

The subminiature electric leakage mutual inductor module comprises a shell, a mutual inductor assembly and a cover plate, the mutual inductor assembly is installed in the shell, and the cover plate is fixed to the right end of the shell; the mutual inductor assembly comprises a framework, a mutual inductor, a first shielding case and a second shielding case, the mutual inductor is installed at the top of the framework, the first shielding case is installed at the left end of the mutual inductor, the second shielding case is installed at the right end of the mutual inductor, and two groups of PIN needles which are symmetrically distributed are arranged at the bottom of the framework; a mutual inductor positioning groove is formed in the top of the framework, framework fool-proof positioning grooves are formed in the left side and the right side of the framework, and a group of mutual inductor wire outlet grooves which are symmetrically distributed are formed in the front end of the framework. The device not only has excellent performance in the aspects of structural design, material application, production process, user experience and the like, but also reaches the industry leading level in the key fields of attractiveness, safety and the like, and is an excellent product integrating high efficiency, stability, attractiveness and safety.

Description

Technical Field

[0001] The utility model relates to the technical field of mutual inductors, in particular to an ultra-small leakage mutual inductor module. Background Art

[0002] The mutual inductor is very important in the leakage protector circuit. It can detect the size and direction of the leakage current. The leakage current causes the current in two directions in the circuit, and the mutual inductor can transfer the current in these two directions to the leakage protector respectively, ensuring that the leakage protector can accurately detect the leakage fault in the circuit. With the increasing sophistication of industrial equipment, the accuracy requirements for the current and voltage parameters in the circuit are getting higher and higher, and more and more mutual inductors need to be arranged in the circuit. However, the volume requirements of industrial equipment are getting smaller and smaller. For equipment manufacturers, the reduction in the volume of the mutual inductor has a greater impact on the control of the equipment volume.

[0003] The existing transformer has the following defects:

[0004] The existing mutual inductors are obviously affected by electromagnetic interference, have large size and weight, low automation during manufacturing, low production efficiency, high cost, high defective rate during manufacturing, need to be filled with glue, low production efficiency, high cost, heavy weight, mutual inductors are not easy to weld, and have poor manufacturability. Therefore, a solution is needed. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies of the prior art, the utility model provides an ultra-small leakage transformer module to solve the problems raised in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above purpose, the utility model is implemented through the following technical solutions: an ultra-small leakage transformer module, including a shell, a transformer assembly and a cover plate, the transformer assembly is installed in the shell, and the cover plate is fixed to the right end of the shell; the transformer assembly includes a frame, a transformer, a first shielding cover and a second shielding cover, the transformer is installed on the top of the frame, the first shielding cover is installed on the left end of the transformer, and the second shielding cover is installed on the right end of the transformer, and two groups of PIN needles distributed in a symmetrical manner are provided at the bottom of the frame; a transformer positioning groove is provided on the top of the frame, and the transformer positioning groove is a rectangular structure, and frame anti-foolproof positioning grooves are provided on both sides of the frame, and a group of transformer outlet grooves distributed in a symmetrical manner are provided at the front end of the frame.

[0009] Preferably, the shell is of an N-shaped structure, an ultrasonic solder boss is provided on the shell surface, an ultrasonic positioning groove is provided on the ultrasonic solder boss, a shell through-hole sleeve is provided on the shell surface, a group of skeleton anti-fool positioning columns distributed in a symmetrical manner are provided on the inner side of the ultrasonic solder boss, a product isolation boss is provided at the bottom end of the ultrasonic solder boss, a product anti-fool positioning column is provided at the bottom of the product isolation boss, and a cover plate stop limit and a shell PIN outlet are respectively provided at the front end of the bottom of the ultrasonic solder boss.

[0010] Preferably, a cover plate PIN baffle is provided at the bottom of the left end of the cover plate, a cover plate stop is provided at the left end of the cover plate PIN baffle, an ultrasonic solder groove is provided on the outer side of the left end of the cover plate, a group of ultrasonic positioning columns distributed in a symmetrical manner are opened on the ultrasonic solder groove, and a cover plate through-hole sleeve is opened on the surface of the cover plate.

[0011] (III) Beneficial effects

[0012] The utility model provides an ultra-small leakage transformer module, which has the following beneficial effects:

[0013] This ultra-small leakage current transformer module is integrated with the bakelite frame and compactly assembled in the shell, minimizing the product volume. This design not only optimizes the space layout, making the product more portable and easy to deploy, but also greatly improves the refinement of the overall appearance, meeting the high requirements of modern electronic equipment for space utilization.

[0014] Excellent anti-interference performance: The transformer adopts a fully enclosed shielding cover design to effectively isolate external electromagnetic interference, ensuring that the accuracy and stability of leakage current detection reach the industry-leading level. In complex electromagnetic environments, the invention can still maintain excellent performance and provide users with reliable data support.

[0015] Efficient automated production process: The transformer outgoing wire is automatically wound onto the PIN, and the use of high-temperature resistant bakelite skeletons realizes the automation of the welding process. This not only greatly reduces labor costs and improves production efficiency, but also significantly reduces quality fluctuations caused by human factors, ensuring the stability and consistency of product quality.

[0016] Strong and stable structural design: The transformer and the skeleton integrated components are precisely positioned and fixed by the shell and cover, and can be firmly connected without glue. This design not only enhances the structural strength and stability of the product, but also avoids the environmental pollution and safety hazards that may be caused by the use of glue.

[0017] Intelligent foolproof design: The frame and shell adopt unique foolproof groove and positioning column design to ensure that the installation will not be reversed. This design not only improves the intelligence level of the manufacturing process and reduces the possibility of human error, but also effectively improves production efficiency and product quality.

[0018] Innovative material application and cost optimization: PIN pins adopt copper sheet integrated stamping and electroplating process, which not only saves material cost, but also improves the conductivity and durability of the product. In addition, the automatic cold pressing into the frame further improves production efficiency and reduces production costs.

[0019] Convenient automated assembly process: Ultrasonic welding fixation and auxiliary positioning design of positioning columns make the product assembly process simpler, faster and more accurate. This assembly method not only improves production efficiency, but also ensures the stability and reliability of product quality.

[0020] Elegant and beautiful appearance design: The ultrasonic positioning column on the shell makes the welding process smoother, the product joints are smooth and without discontinuity, which improves the overall appearance of the product. At the same time, the simple and elegant appearance design also conforms to the modern aesthetic trend and enhances the market competitiveness of the product.

[0021] Easy to operate and fix: The stopper design of the cover and the shell makes the cover installation easier and faster, while improving the stability of the product. In addition, the design of the product's foolproof positioning column also avoids possible misoperation by users during use, improving the user-friendly experience.

[0022] Improved safety: The product's fool-proof positioning column not only avoids the problem of product installation being reversed, but also strengthens the fixation of the product, improving its convenience and firmness in use.

[0023] Welding convenience: The isolation boss design on the welding surface ensures sufficient air circulation during welding, making the welding process smoother and improving the success rate of welding.

[0024] High safety level: The transformer is placed in the casing and cover sleeve, and the casing and cover through-holes are embedded with the sleeve structure, which increases the creepage distance and electrical clearance of the product, meets higher safety standards, and provides a strong guarantee for the safe use of the product.

[0025] To sum up, this new model not only performs well in structural design, material application, production process and user experience, but also reaches the industry-leading level in key areas such as aesthetics and safety. It is an excellent product that integrates high efficiency, stability, beauty and safety, and has broad market application prospects and huge commercial value. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 It is a structural schematic diagram of the mutual inductor assembly of the utility model;

[0028] Figure 3 It is a structural schematic diagram of the housing of the utility model;

[0029] Figure 4 This is a structural schematic diagram of the cover plate of the utility model;

[0030] Figure 5 It is a structural schematic diagram of the framework of the utility model.

[0031] In the figure, 1. shell; 2. mutual inductor assembly; 3. cover plate; 4. frame; 5. mutual inductor; 6. first shielding cover; 7. second shielding cover; 8. PIN pin; 9. mutual inductor positioning groove; 10. frame anti-fool positioning groove; 11. mutual inductor wire outlet groove; 12. ultrasonic solder boss; 13. shell through-hole sleeve; 14. ultrasonic positioning groove; 15. frame anti-fool positioning column; 16. product isolation boss; 17. cover plate stop limit; 18. shell PIN outlet; 19. product anti-fool positioning column; 20. cover plate PIN baffle; 21. cover plate stop; 22. ultrasonic solder groove; 23. cover plate through-hole sleeve; 24. ultrasonic positioning column. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] See also Figure 1-5 The embodiment of the utility model provides a technical solution: an ultra-small leakage transformer module, comprising a housing 1, a transformer assembly 2 and a cover plate 3, the transformer assembly 2 is installed in the housing 1, and the cover plate 3 is fixed to the right end of the housing 1;

[0034] The transformer assembly 2 includes a frame 4, a transformer 5, a first shielding cover 6 and a second shielding cover 7, the transformer 5 is installed on the top of the frame 4, the first shielding cover 6 is installed on the left end of the transformer 5, the second shielding cover 7 is installed on the right end of the transformer 5, and two groups of PIN needles 8 distributed in a symmetrical manner are provided at the bottom of the frame 4;

[0035] Furthermore, a mutual inductor positioning groove 9 is provided on the top of the frame 4, and the mutual inductor positioning groove 9 is in a rectangular structure. The frame 4 is provided with a frame foolproof positioning groove 10 on both sides, and a group of mutual inductor outlet grooves 11 distributed in a symmetrical manner are provided at the front end of the frame 4. A group of metal PIN needles 8 are provided on the frame 4, which are connected by cold pressing insertion, and one end of the PIN needle 8 is inserted into the frame 4, and the other end protrudes from the frame 4. There are frame foolproof positioning grooves 10 on both sides of the PIN needle 8, one end is open and the other end is not open. When installing, the open end is inserted into the outer shell frame foolproof positioning column 15, and the opposite side of the PIN needle 8 has a mutual inductor positioning groove 9.

[0036] Differently, the shell 1 is in an N-shaped structure, with an ultrasonic soldering boss 12 on the surface of the shell 1, an ultrasonic positioning groove 14 on the ultrasonic soldering boss 12, a shell through-hole sleeve 13 on the surface of the shell 1, a group of skeleton foolproof positioning columns 15 symmetrically distributed on the inner side of the ultrasonic soldering boss 12, a product isolation boss 16 at the bottom end of the ultrasonic soldering boss 12, a product foolproof positioning column 19 at the bottom of the product isolation boss 16, a cover plate stop limit 17 and a shell PIN port 18 at the front end of the bottom of the ultrasonic soldering boss 12, a group of product isolation bosses are provided on the outer side wall of the shell PIN port 18, and a product skeleton foolproof positioning column 15 is provided on the same side as the isolation boss for product isolation and positioning. The mutual inductor 5 is placed between the shell 1 and the cover plate 3, and the shell through-hole sleeve 13 and the cover plate through-hole sleeve 23 are interlocked with each other and coaxially assembled with the mutual inductor 5 to ensure the stability and accuracy of the mutual inductor 5.

[0037] Effectively, a cover plate PIN baffle 20 is provided at the bottom of the left end of the cover plate 3, a cover plate stop 21 is provided at the left end of the cover plate PIN baffle 20, an ultrasonic solder groove 22 is provided on the outer side of the left end of the cover plate 3, a group of ultrasonic positioning columns 24 distributed in a symmetrical manner are opened on the ultrasonic solder groove 22, a cover plate through-hole sleeve 23 is opened on the surface of the cover plate 3, the ultrasonic solder groove 22 of the cover plate 3 and the ultrasonic solder boss 12 of the shell 1 are embedded with each other, and a fixed connection is achieved through ultrasonic welding to ensure the firmness and sealing of the connection.

[0038] Working principle: During operation, install the mutual inductor 5 with the first shielding cover 7 and the second shielding cover 8 and then install it into the anti-mistake positioning groove 15 of the skeleton; weld the outlet end of the mutual inductor 5 to the PIN pin 8 to form the mutual inductor assembly 2; install the mutual inductor assembly 2 into the shell 1, and ensure that the skeleton 4 and the shell 1 are accurately positioned; install the cover plate 3, so that the cover plate PIN baffle 20, the cover plate stop limit 17 and the ultrasonic positioning column 24 cooperate with the corresponding parts of the shell 1; realize the fixed connection between the shell 1 and the cover plate 3 by ultrasonic welding.

[0039] The utility model includes: 1, shell; 2, mutual inductor assembly; 3, cover plate; 4, frame; 5, mutual inductor; 6, first shielding cover; 7, second shielding cover; 8, PIN pin; 9, mutual inductor positioning groove; 10, frame foolproof positioning groove; 11, mutual inductor outlet groove; 12, ultrasonic solder boss; 13, shell through-hole sleeve; 14, ultrasonic positioning groove; 15, frame foolproof positioning column; 16, product isolation boss; 17, cover plate stop limiter; 18, shell PIN outlet; 19, product foolproof positioning column; 20, cover plate PIN baffle; 21, cover plate stopper; 22, ultrasonic solder groove; 23, cover plate through-hole sleeve; 24, ultrasonic positioning column, all of which are general standard parts or those skilled in the art. The structures and principles of the known components are all known to the technical personnel through the technical manual or through conventional experimental methods. The problem solved by the utility model is that the existing mutual inductors are obviously affected by electromagnetic interference, are large in size and weight, have a low degree of automation during manufacturing, low production efficiency, high cost, a high defective rate during manufacturing, require glue filling, low production efficiency, high cost, heavy weight, the mutual inductor is not easy to weld, and has poor manufacturability. The utility model can perform well in structural design, material application, production process and user experience through the combination of the above components, and has also reached the industry-leading level in key areas such as aesthetics and safety. This is an excellent product that integrates high efficiency, stability, beauty and safety.

[0040] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0041] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An ultra-small leakage current transformer module, characterized in that: It comprises a housing (1), a mutual inductor assembly (2) and a cover plate (3), wherein the mutual inductor assembly (2) is installed in the housing (1), and the cover plate (3) is fixed to the right end of the housing (1); The mutual inductor assembly (2) comprises a frame (4), a mutual inductor (5), a first shielding cover (6) and a second shielding cover (7), wherein the mutual inductor (5) is mounted on the top of the frame (4), the first shielding cover (6) is mounted on the left end of the mutual inductor (5), and the second shielding cover (7) is mounted on the right end of the mutual inductor (5), and two groups of PIN needles (8) distributed in a symmetrical manner are provided at the bottom of the frame (4), and the PIN needles (8) protrude from the bottom of the housing (1); The top of the frame (4) is provided with a mutual inductor positioning groove (9), the mutual inductor positioning groove (9) is in a rectangular structure, the left and right sides of the frame (4) are provided with frame foolproof positioning grooves (10), and the front end of the frame (4) is provided with a group of mutual inductor outlet grooves (11) distributed in a symmetrical manner.

2. The ultra-small leakage current transformer module according to claim 1, characterized in that: The shell (1) is in an N-shaped structure. An ultrasonic solder boss (12) is provided on the surface of the shell (1). An ultrasonic positioning groove (14) is provided on the ultrasonic solder boss (12). A shell through-hole sleeve (13) is provided on the surface of the shell (1). A group of skeleton fool-proof positioning columns (15) distributed in a symmetrical manner are provided on the inner side of the ultrasonic solder boss (12). A product isolation boss (16) is provided at the bottom end of the ultrasonic solder boss (12). A product fool-proof positioning column (19) is provided at the bottom of the product isolation boss (16). A cover stop limiter (17) and a shell PIN outlet (18) are provided at the front end of the bottom of the ultrasonic solder boss (12).

3. The ultra-small leakage current transformer module according to claim 1, characterized in that: A cover plate PIN baffle (20) is provided at the bottom of the left end of the cover plate (3), a cover plate stopper (21) is provided at the left end of the cover plate PIN baffle (20), an ultrasonic soldering groove (22) is provided on the outer side of the left end of the cover plate (3), a group of ultrasonic positioning columns (24) distributed in a symmetrical manner are provided on the ultrasonic soldering groove (22), and a cover plate through-hole sleeve (23) is provided on the surface of the cover plate (3).

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