High-protection-level current sensor module

Abstract

The utility model discloses a current sensor module with a high protection grade, which comprises a shell, a PIN, a rubber baffle, a circuit board, a current transformer and a cover plate, the PIN, the rubber baffle, the circuit board and the current transformer are sequentially arranged in the shell, the current transformer is connected with the circuit board through a fly wire, the cover plate is arranged at the right end of the shell, and the PIN is arranged in the shell. The joint of the cover plate and the shell is fixed in a welding mode. An ultrasonic solder boss is arranged on the outer side of the surface of the shell, a plurality of sets of circuit board positioning columns, circuit board supporting tables and circuit board auxiliary positioning columns are arranged between the ultrasonic solder boss and the shell, a plurality of sets of PIN installation grooves are formed in the shell, a terminal installation opening is formed in the rear end of the shell, and a shell through sleeve is arranged in the shell. According to the device, through innovative measures in multiple aspects of optimizing the structural design, improving the waterproof performance, reducing the production cost, improving the use convenience and attractiveness, enhancing the electrical safety performance and the like, the comprehensive improvement of the product performance is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of current sensors, in particular to a current sensor module with a high protection level. Background Art

[0002] A current sensor is a device used to detect the current in a circuit. It can convert the current signal in the circuit into an analog or digital output. The current sensor uses the principle of electromagnetic induction to detect the current signal. It uses the interaction between the magnetic core and the coil so that the voltage in the coil is proportional to the detected current. Current sensors are often used in AC circuits to isolate high-voltage circuits from low-level circuits to achieve safety isolation. Current sensors provide an important means for testing, measurement, and control in the fields of electricity, electronics, and communications.

[0003] Existing current sensors have the following defects:

[0004] The existing current sensor module has no waterproof function, low protection level, large glue filling volume, PIN pins are injected through metal embedded injection molding, and need to be manually placed into the mold one by one for injection molding. The internal mutual inductor and circuit board are usually connected by skeleton connection, resulting in complex process, low automation, heavy weight and high cost. 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 a current sensor module with a high protection level 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: a high protection level current sensor module, including a shell, a PIN needle, a rubber baffle, a circuit board, a current transformer and a cover plate, the PIN needle, the rubber baffle, the circuit board and the current transformer are installed in the shell in sequence, the current transformer is connected to the circuit board through a flying wire, the cover plate is installed at the right end of the shell, and the connection between the cover plate and the shell is fixed by welding; the shell is a rectangular structure, and the top is an arc-shaped structure, an ultrasonic solder boss is provided on the outer side of the shell surface, and a plurality of groups of circuit board positioning columns, circuit board support tables and circuit board auxiliary positioning columns are provided between the ultrasonic solder boss and the shell, a plurality of groups of PIN installation grooves are opened in the shell, a terminal installation port is provided at the rear end of the shell, and the terminal installation port is located directly behind the plurality of groups of PIN installation grooves, a shell through sleeve is provided in the shell, one end of the PIN needle is located in the terminal installation port, and the rubber baffle is located at the terminal installation port and the shell opening.

[0009] Preferably, a group of symmetrically distributed mounting feet are provided on the outer side of the ultrasonic solder boss, the mounting feet are triangular in structure, the outer ends of the mounting feet are arc-shaped, and product mounting holes are provided on the surfaces of the mounting feet.

[0010] Preferably, the cover plate is in a rectangular structure, and the top of the cover plate is in an arc-shaped structure, an ultrasonic solder groove is provided on the outer side of the cover plate surface, a cover plate through-hole sleeve is provided on the cover plate surface, a mutual inductor positioning column is provided on the outer side of the cover plate through-hole sleeve, and an ultrasonic positioning column is provided between the cover plate and the ultrasonic solder groove.

[0011] (III) Beneficial effects

[0012] The utility model provides a high protection level current sensor module. It has the following beneficial effects:

[0013] This high protection level current sensor module ensures the precise alignment and stable connection of the internal components of the product by adopting multiple fixing methods such as PCBA positioning columns, auxiliary positioning columns, brackets and mutual inductor positioning columns. At the same time, the PIN pin is firmly fixed to the shell through cold pressing technology and welded with the PCBA to form an integral structure. In addition, the internal glue filling design not only enhances the stability of the structure, but also improves the product's seismic and impact resistance. These measures together ensure that the product of the present invention can maintain stable performance in various environments.

[0014] Secondly, this product has good waterproof performance. Through ultrasonic welding fixation and internal glue filling technology, the product shell forms a sealed structure, which effectively prevents the intrusion of water and moisture. In particular, the glue not only covers the glue baffle, but also extends to the assembly joint of the sleeve in the hole part of the shell and the cover plate, further enhancing the waterproof effect. This enables the product of the present invention to work stably in a humid or watery environment and meet the needs of various application scenarios.

[0015] In terms of production cost and efficiency, the present invention achieves cost reduction and improvement of production efficiency by optimizing the production process and material selection. The copper sheet integrated stamping technology is adopted to simplify the production process of PIN pins and improve production efficiency. At the same time, the application of automated jigs enables the PIN pins to be accurately cold-pressed into the housing, reducing the errors and costs of manual operation. In addition, the flying wire welding fixation method of the mutual inductor and the PCBA does not require skeleton fixation, further reducing production costs. These measures together make the products of the present invention have higher cost performance and market competitiveness.

[0016] In addition, the product of the present invention also has significant advantages in terms of ease of use and aesthetics. The housing is provided with a terminal installation port, and the user only needs to insert the terminal into the installation port to achieve a quick connection without complicated operating steps. At the same time, the terminal installation port adopts an integrated injection molding process, and no additional terminal needle seat parts are required, which not only reduces the production cost, but also makes the product appearance more concise and beautiful. In addition, the design of the terminal installation port and product installation hole on the product allows users to choose flying wire suspended installation or onboard fixed installation according to actual needs, and flexibly adapt to different application scenarios.

[0017] In terms of safety performance, the present invention improves the electrical safety performance of the product through reasonable structural design and process processing. The mutual inductor is placed in the housing and cover sleeve, and the housing and cover through-holes are embedded in the sleeve structure, which increases the creepage distance and electrical clearance of the product and effectively prevents the occurrence of electrical faults. This provides users with a safer and more reliable product experience.

[0018] In summary, the present invention achieves a comprehensive improvement in product performance through innovative measures in multiple aspects, such as optimizing structural design, improving waterproof performance, reducing production costs, improving ease of use and aesthetics, and enhancing electrical safety performance. These advantages make the product of the present invention more competitive in the market, can meet the diverse needs of users, and bring positive impetus to the development of related fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the overall internal structure of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the housing of the utility model;

[0022] Figure 4 This is a structural schematic diagram of the cover plate of the utility model;

[0023] Figure 5 It is a structural schematic diagram of the PIN needle of the utility model.

[0024] In the figure, 1. shell; 2. PIN needle; 3. rubber baffle; 4. circuit board; 5. current transformer; 6. cover plate; 7. ultrasonic solder boss; 8. circuit board positioning column; 9. circuit board support; 10. circuit board auxiliary positioning column; 11. product mounting hole; 12. shell through sleeve; 13. PIN mounting slot; 14. terminal mounting port; 15. ultrasonic solder slot; 16. cover plate through sleeve; 17. transformer positioning column; 18. ultrasonic positioning column; 19. mounting foot. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1-5 The embodiment of the utility model provides a technical solution: a high protection level current sensor module, including a shell 1, a PIN needle 2, a rubber baffle 3, a circuit board 4, a current transformer 5 and a cover plate 6. The PIN needle 2, the rubber baffle 3, the circuit board 4 and the current transformer 5 are sequentially installed in the shell 1, the current transformer 5 is connected to the circuit board 4 through a flying wire, the cover plate 6 is installed at the right end of the shell 1, and the connection between the cover plate 6 and the shell 1 is fixed by welding. The body of the PIN needle 2 is T-shaped, with a barb at one end; the PIN needle 2 is formed by stamping a sheet of copper, and the PIN needle 2 is tinned; the barbed end is cold-pressed into the PIN needle installation groove 13 of the shell, one end of the PIN protrudes from the non-open end inside the shell 1, and the other end penetrates the inside of the shell 1 and is located in the terminal installation port 14 outside the shell 1.

[0027] The problem is solved, the shell 1 is of rectangular structure, and the top is of arc-shaped structure, an ultrasonic solder boss 7 is provided on the outer side of the surface of the shell 1, a plurality of groups of circuit board positioning columns 8, circuit board supports 9 and circuit board auxiliary positioning columns 10 are provided between the ultrasonic solder boss 7 and the shell 1, a plurality of groups of PIN installation grooves 13 are opened in the shell 1, a terminal installation opening 14 is provided at the rear end of the shell 1, the terminal installation opening 14 is located directly behind the plurality of groups of PIN installation grooves 13, a shell through sleeve 12 is provided in the shell 1, and the relative position relationship of the current transformer 5 is that it is placed in the shell 1 and positioned with the cover sleeve 16; the shell through hole sleeve 12 and the cover through hole sleeve 16 are coaxially assembled with the current transformer 5.

[0028] Furthermore, a group of symmetrically distributed mounting feet 19 are provided on the outside of the ultrasonic solder boss 7. The mounting feet 19 are triangular in shape, and the outer ends of the mounting feet 19 are arc-shaped. Product mounting holes 11 are provided on the surface of the mounting feet 19. The mounting feet 19 are used to fix the whole, thereby facilitating the staff to install the whole.

[0029] Differently, the cover plate 6 is in a rectangular structure, and the top of the cover plate 6 is in an arc-shaped structure, an ultrasonic solder groove 15 is provided on the outer side of the surface of the cover plate 6, a cover plate through-hole sleeve 16 is provided on the surface of the cover plate 6, a transformer positioning column 17 is provided on the outer side of the cover plate through-hole sleeve 16, and an ultrasonic positioning column 18 is provided between the cover plate 6 and the ultrasonic solder groove 15. The installation method and purpose of the transformer positioning column 17 is to press the current transformer 5 to achieve positioning, and the installation method and purpose of the ultrasonic positioning column 18 is to insert the shell 1 along the inner side wall of the opening end of the shell 1 for positioning.

[0030] Working principle: During operation, the staff will install the PIN needle 2, the rubber baffle 3, the circuit board 4, the current transformer 5 and the cover plate 6 in the shell 1 in sequence, and the staff will cover the cover plate 6 into the left end of the shell 1, and the staff will weld and seal the connection between the cover plate 6 and the shell 1 by welding.

[0031] The components of the utility model, 1, housing; 2, PIN needle; 3, rubber baffle; 4, circuit board; 5, current transformer; 6, cover plate; 7, ultrasonic solder boss; 8, circuit board positioning column; 9, circuit board support platform; 10, circuit board auxiliary positioning column; 11, product mounting hole; 12, housing through sleeve; 13, PIN mounting groove; 14, terminal mounting port; 15, ultrasonic solder groove; 16, cover plate through sleeve; 17, transformer positioning column; 18, ultrasonic positioning column; 19, mounting foot, are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be obtained by those skilled in the art through the technical manual. It is known or obtained through conventional experimental methods that the problem solved by the utility model is that the existing current sensor module has no waterproof function, low protection level, large glue filling amount, PIN pins are injected through metal embedded injection, and need to be manually placed into the mold one by one for injection molding, and the internal mutual inductor is usually connected to the circuit board using a skeleton connection, which leads to complex process, low degree of automation, heavy weight and high cost. The utility model can achieve comprehensive improvement of product performance through the combination of the above components, by optimizing structural design, improving waterproof performance, reducing production costs, improving ease of use and aesthetics, and enhancing electrical safety performance and other innovative measures.

[0032] 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.

[0033] 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. A high protection level current sensor module, characterized in that: The invention comprises a housing (1), a PIN needle (2), a rubber baffle (3), a circuit board (4), a current transformer (5) and a cover plate (6); the PIN needle (2), the rubber baffle (3), the circuit board (4) and the current transformer (5) are sequentially installed in the housing (1); the current transformer (5) is connected to the circuit board (4) via a flying wire; the cover plate (6) is installed at the right end of the housing (1); and the connection between the cover plate (6) and the housing (1) is fixed by welding; The shell (1) is in a rectangular structure, and the top is in an arc-shaped structure. An ultrasonic solder boss (7) is provided on the outer side of the surface of the shell (1). A plurality of groups of circuit board positioning columns (8), a circuit board support (9) and a circuit board auxiliary positioning column (10) are provided between the ultrasonic solder boss (7) and the shell (1). A plurality of groups of PIN installation grooves (13) are provided in the shell (1). A terminal installation opening (14) is provided at the rear end of the shell (1). The terminal installation opening (14) is located directly behind the plurality of groups of PIN installation grooves (13). A shell through sleeve (12) is provided in the shell (1). One end of the PIN needle (2) is located in the terminal installation opening (14). The rubber baffle (3) is located at the opening between the terminal installation opening (14) and the shell (1).

2. A high protection level current sensor module according to claim 1, characterized in that: A group of symmetrically distributed mounting feet (19) are provided on the outer side of the ultrasonic solder boss (7); the mounting feet (19) are triangular in structure; the outer ends of the mounting feet (19) are arc-shaped; and product mounting holes (11) are provided on the surfaces of the mounting feet (19).

3. The high protection level current sensor module according to claim 1, characterized in that: The cover plate (6) is in a rectangular structure, and the top of the cover plate (6) is in an arc-shaped structure. An ultrasonic soldering groove (15) is provided on the outer side of the surface of the cover plate (6). A cover plate through-hole sleeve (16) is provided on the surface of the cover plate (6). A mutual inductor positioning column (17) is provided on the outer side of the cover plate through-hole sleeve (16). An ultrasonic positioning column (18) is provided between the cover plate (6) and the ultrasonic soldering groove (15).

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