A current transmitter and its packaging structure

Abstract

The present invention discloses a current transmitter and its packaging structure, which belongs to the technical field of transmitters. The present invention comprises an insulating shell base, wherein a wiring block for an external detection signal is provided on the insulating shell base, a plurality of measuring modules are provided on the insulating shell bases located on both sides of the wiring block, and a plurality of wiring modules are provided on the wiring block corresponding to the measuring modules. The measuring modules comprise an insulating switching seat connected by an insulating shielding switching member, and the insulating switching seat is connected to an assembly seat by a steering adjustment member. The present invention realizes physical isolation of adjacent measuring channels through a slidable insulating switching seat and a shielded packaging shell, and a small current semi-enclosed mutual inductor that is susceptible to interference can be placed inside the shielded packaging shell, and a large current measurement unit with a strong magnetic field is placed outside, thereby significantly reducing the interference of the large current magnetic field on the small current measurement, effectively solving the most difficult magnetic field crosstalk problem in multi-phase current measurement inside a highly integrated device, and significantly improving the measurement accuracy and reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of transmitters, and in particular to a current transmitter and a packaging structure thereof. Background Art

[0002] A multi-channel transmitter is an intelligent instrument that can simultaneously process multiple sensor signals and convert them into standard industrial or digital signals. Its core value lies in high integration, multi-channel collaboration, and intelligent processing, making it suitable for centralized monitoring and control in complex industrial scenarios.

[0003] In the process of line detection by a multi-channel transmitter, when measuring multi-phase current, it is a basic requirement to ensure that there is sufficient physical distance between sensors of different phases and between sensors and adjacent wires to avoid mutual interference of magnetic fields. However, since the spacing between sensors on the current multi-channel transmitter is limited by the size of the equipment, there is often interference between adjacent multi-phase currents, especially when large current affects small current, the interference is even worse, making the measurement data of small current inaccurate. Therefore, a separate current transmitter has gradually emerged in the market. However, although various types of transmitters can achieve the distance between sensors, the sensors are connected only by wires, and they often move on the measured circuit. Based on this, a current transmitter and its packaging structure are proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the spacing between sensors on the current multi-channel transmitter is limited by the size of the equipment, which often causes interference between adjacent multi-phase currents, especially when large current affects small current, resulting in inaccurate measurement data of small current. Therefore, a type of separate current transmitter has gradually emerged on the market. However, although various types of transmitters can achieve the distance between sensors, the sensors are connected by wires alone, and they often move on the measured circuit, making them unable to be effectively used in some mobile separate types. Therefore, a current transmitter and its packaging structure are proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A current transmitter and its packaging structure, comprising an insulating housing, a wiring block for external detection signals being provided on the insulating housing, a plurality of measurement modules being provided on both sides of the wiring block, and a plurality of wiring modules being provided on the wiring block corresponding to the measurement modules;

[0007] The measuring module includes an insulating switching seat connected by an insulating shielding switching member, the insulating switching seat is connected to an assembly seat through a steering adjustment member, a semi-enclosed mutual inductor is provided on the assembly seat, and the semi-enclosed mutual inductor is connected to the assembly seat through a plug-in component;

[0008] Wire-passing grooves are provided on the insulating shell seats on both sides of the insulating switching seat, and elastic wire-controlling parts for arranging the wires are provided in the wire-passing grooves.

[0009] As a preferred solution, the semi-closed transformer consists of an insulating resin shell, a steel sheet semi-closed iron core arranged inside the insulating resin shell, and a coil winding wound on the steel sheet semi-closed iron core. The wires on both sides of the coil winding are respectively connected to terminal plugs, and the assembly seat is provided with a wire jack for connecting the terminal plugs.

[0010] As a preferred solution, the assembly seat is provided with an assembly opening adapted to the semi-closed mutual inductor, the bottom of the assembly opening is provided with a steel sheet assembly core, and the steel sheet assembly core is combined with the steel sheet semi-closed core to form a closed-loop core.

[0011] As a preferred solution, the plug-in assembly includes a buckle opening provided on the assembly opening, and a buckle piece detachably connected to the buckle opening is provided at the bottom of the insulating resin shell.

[0012] As a preferred solution, the insulating shielding switching component includes a switching damping sliding groove opened on the insulating shell seat, and the insulating switching seat is slidably arranged on the switching damping sliding groove.

[0013] As a preferred solution, the steering adjustment member includes a telescopic opening opened on the insulating switching seat, the inner wall of the telescopic opening is connected to a T-shaped pressure column through a downward pressure spring, the T-shaped pressure column is connected to the bottom of the assembly seat, and the insulating switching seat is provided with a rubber gasket to increase friction.

[0014] As a preferred solution, the elastic wire control member includes an elastic column slidably arranged in the wire groove, and a wire limiting disk is arranged at the end of the elastic column. The wire limiting disk is connected to the inner wall of the wire groove through a sleeve spring arranged on the outer wall of the elastic column. The wiring module is connected to the wire jack through a wire, and the wire is wound around the wire limiting disk.

[0015] A packaging structure includes a shielding packaging shell, which is connected to an insulating shell base through locking pieces on both sides. A tested circuit guide port is provided above the insulating shell base, and the tested circuit guide port is provided with a rubber ring.

[0016] As a preferred solution, the locking member includes locking cards arranged on both sides of the insulating shell base, and the shielding packaging shell has slots adapted to the locking cards on both sides for assembling the insulating shell base and the shielding packaging shell.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention achieves physical isolation of adjacent measurement channels (especially high and low current lines) through a slidable insulating switching seat and a shielded packaging shell. The small current semi-enclosed transformer that is susceptible to interference can be placed inside the shielded packaging shell, and the large current measurement unit with a strong magnetic field can be placed outside. This significantly reduces the interference of the large current magnetic field on the small current measurement. It effectively solves the most difficult magnetic field crosstalk problem in multi-phase current measurement inside a highly integrated device, significantly improving measurement accuracy and reliability.

[0019] 2. The present invention achieves a similar isolation effect as a separate type inside the integrated device through sliding and shielding design, avoiding the problems of unstable connection and easy displacement of separate sensors on sports equipment. It is suitable for sports products or vibration environments. Its semi-closed design, modular snap-on connection, detachable shielding shell and flexible installation angle adjustment greatly simplify the installation process and enable it to adapt to complex wiring environments and the needs of sports equipment, overcoming the respective shortcomings of traditional multi-channel transmitters and separate transmitters. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the assembly structure of a current transmitter and its packaging structure proposed by the present invention;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of a current transmitter and its packaging structure proposed by the present invention;

[0022] Figure 3 This is a structural schematic diagram of a current transmitter and an insulating housing in its packaging structure proposed by the present invention;

[0023] Figure 4 This is a schematic diagram of the assembly structure of a current transmitter and a semi-enclosed transformer, an assembly seat and an insulation switching seat in its packaging structure proposed by the present invention;

[0024] Figure 5 This is a schematic structural diagram of a current transmitter and a measurement module in its packaging structure proposed by the present invention;

[0025] Figure 6 This is a schematic diagram of the measuring state of the assembly seat and the insulation switching seat in the current transmitter and its packaging structure proposed by the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of the current transmitter and the interior of the wire slot in its packaging structure proposed by the present invention;

[0027] Figure 8This is a structural schematic diagram of a current transmitter and an elastic line control member in its packaging structure proposed by the present invention.

[0028] In the figure: 1. Insulation shell base; 2. Terminal block; 3. Terminal module; 4. Insulation switching seat; 5. Assembly seat; 6. Semi-enclosed transformer; 7. Wire duct; 8. Terminal plug; 9. Wire jack; 10. Steel sheet assembly core; 11. Snap-on opening; 12. Snap-on piece; 13. Switching damping slide groove; 14. Telescopic opening; 15. T-shaped pressure column; 16. Rubber gasket; 17. Elastic column; 18. Wire limit disk; 19. Shielding packaging shell; 20. Rubber ring; 21. Locking card; 22. Slot. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention in specific circumstances.

[0032] Example, see Figures 1 to 8A current transmitter and its packaging structure include an insulating housing 1, a wiring block 2 for external detection signals is provided on the insulating housing 1, a plurality of measurement modules are provided on the insulating housing 1 on both sides of the wiring block 2, and a plurality of wiring modules 3 are provided on the wiring block 2 corresponding to the measurement modules, wherein the wiring module 3 is a wiring terminal, which is connected to a semi-enclosed mutual inductor 6 by a wire that is extended and retracted by an elastic wire control member, and an external signal receiver of the wiring terminal is used to transmit the data measured by the current transmitter as a signal;

[0033] The measuring module includes an insulating switching seat 4 connected through an insulating shielding switching member, and the insulating shielding switching member includes a switching damping slot 13 opened on the insulating shell seat 1. The insulating switching seat 4 is slidingly set on the switching damping slot 13. The insulating switching seat 4 can slide on the switching damping slot 13. When not affected by external force, the insulating switching seat 4 will be stable on the switching damping slot 13 due to friction. The sliding setting can realize switching between the inside and outside of the semi-enclosed transformer 6, thereby isolating the measured lines of the adjacent semi-enclosed transformer 6 through the shielding packaging shell 19 (the isolation method is to achieve isolation through the installation of the shielding packaging shell 19 and the insulating shell seat 1), thereby reducing the interference of the high magnetic field of the measured line on the low magnetic field of the adjacent measured line, thereby ensuring the accuracy of the measurement results of the current transmitter.

[0034] A packaging structure includes a shielded packaging shell 19, which is connected to an insulating shell base 1 through locking pieces located on both sides. A test line guide port is provided above the insulating shell base 1, and a rubber sleeve 20 is provided at the test line guide port. A semi-enclosed mutual inductor 6 located inside the shielded packaging shell 19 is connected to the inside and outside of the test line through the rubber sleeve 20, thereby enabling the external test line to pass through the semi-enclosed mutual inductor 6 inside the shielded packaging shell 19 for measurement. The locking piece includes a locking card plate 21 provided on both sides of the insulating shell base 1, and a card slot 22 adapted to the locking card plate 21 is provided on both sides of the shielded packaging shell 19 for assembling the insulating shell base 1 and the shielded packaging shell 19, wherein the locking card plate 21 and the card slot 22 can be detachably assembled, so that during actual circuit measurement and installation, the combination mode can be flexibly adjusted to flexibly adjust according to the magnitude of the current of the test line;

[0035] The insulating switch seat 4 is connected to the assembly seat 5 through a steering adjustment member. Furthermore, the steering adjustment member includes a telescopic opening 14 opened on the insulating switch seat 4. The inner wall of the telescopic opening 14 is connected to a T-shaped pressure column 15 through a downward pressure spring. Under the action of the downward pressure spring, the T-shaped pressure column 15 always exerts downward pressure on the assembly seat 5, thereby ensuring that the T-shaped pressure column 15 has a downward positive pressure. With the cooperation of the rubber gasket 16, the friction between the assembly seat 5 and the insulating switch seat 4 can be increased. The T-shaped pressure column 15 is connected to the bottom of the assembly seat 5, and the insulating switch seat 4 is provided with a rubber gasket 16 that increases friction.

[0036] A further effect of the above-mentioned use is that, through the cooperation of the steering adjustment member, the assembly seat 5 can be rotated to any angle on the insulating switching seat 4, so that the direction of the semi-enclosed transformer 6 can be adjusted according to the different wiring directions of the measured line, so as to ensure that the angle of the measured line is in a relatively vertical state when measuring with the semi-enclosed transformer 6 on the assembly seat 5, so as to avoid mutual interference of the magnetic fields between adjacent measured lines, so that the measuring module can be adjusted according to the actual wiring direction of the measured line on site, ensuring that the measuring module is as perpendicular to the conductor as possible, reducing additional interference or error caused by angle deviation, and optimizing space utilization.

[0037] A semi-closed transformer 6 is provided on the assembly seat 5, and the semi-closed transformer 6 is connected to the assembly seat 5 through a plug-in component. An assembly port compatible with the semi-closed transformer 6 is provided on the assembly seat 5, and a steel sheet assembly core 10 is provided at the bottom of the assembly port. The steel sheet assembly core 10 and the steel sheet semi-closed core are combined to form a closed-loop core. The semi-closed transformer 6 is set with a notch, which can meet the requirements of direct installation with the measured circuit under wiring conditions, without the need for interlaced installation of the measured circuit, while facilitating installation. The closed-loop core is formed by combining the steel sheet assembly core 10 provided on the assembly seat 5 with the steel sheet semi-closed core in the semi-closed transformer 6. The steel sheet assembly core 10 in the assembly seat 5 and the steel sheet semi-closed core in the semi-closed transformer 6 are combined to form a closed-loop core after installation, forming a complete magnetic circuit, thereby ensuring the effectiveness and accuracy of current measurement.

[0038] Furthermore, the plug-in component includes a snap-on opening 11 opened on the assembly opening, and a snap-on part 12 detachably connected to the snap-on opening 11 is provided at the bottom of the insulating resin shell. The provision of the snap-on part 12 facilitates assembly installation and facilitates measurement and installation with the circuit under test.

[0039] The semi-closed transformer 6 consists of an insulating resin shell, a steel sheet semi-closed iron core arranged inside the insulating resin shell, and a coil winding wound on the steel sheet semi-closed iron core. The wires on both sides of the coil winding are respectively connected to terminal plugs 8, and the assembly seat 5 is provided with a wire jack 9 for plugging the terminal plugs 8.

[0040] A wire groove 7 is provided on the insulating shell base 1 located on both sides of the insulating switching seat 4. An elastic wire control member for arranging the wires is provided in the wire groove 7. The elastic wire control member includes an elastic column 17 slidably arranged in the wire groove 7. A limit disk 18 is provided at the end of the elastic column 17. The limit disk 18 is connected to the inner wall of the wire groove 7 through a sleeve spring sleeved on the outer wall of the elastic column 17. The wiring module 3 is connected to the wire jack 9 through a wire, and the wire is wound around the limit disk 18, thereby realizing elastic storage of the wire. When the insulating switching seat 4 moves outward, the wire will squeeze the limit disk 18 to shrink inward, thereby achieving the effect of elastic storage and guidance of the wire, automatically storing and arranging the wires of the measuring module, preventing the line from being entangled and pulled, and improving internal cleanliness and reliability.

[0041] When the present invention is in use, when the current transmitter and the measured circuit are shock-damped and installed for detecting the measured circuit, they are classified according to the current size of the measured circuit. Within the measuring range of the current transmitter, the measured circuit is combined with multiple semi-closed transformers 6, and the buckle 12 set on the semi-closed transformer 6 is assembled with the buckle mouth 11 on the assembly seat 5 to achieve installation through the measured circuit. At this time, the two adjacent semi-closed transformers 6 are respectively staggered and installed, that is, by moving the insulating switching seat 4 in the switching damping slot 13, the measured circuit where the current magnetic field interference may exist is moved to the inside of the shielded packaging shell 19, and the measured circuit with large current is moved to the outside. At this time, the shielded packaging shell 19 and the insulating shell seat 1 are assembled by the cooperation between the locking card 21 and the slot 22, thereby achieving isolation of the semi-closed transformers 6 and their measured circuits inside and outside, and avoiding the influence of the adjacent large current measured circuit on the small current measured circuit.

[0042] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A current transmitter, comprising an insulating housing (1), characterized in that: The insulating housing (1) is provided with a wiring block (2) for connecting an external detection signal, the insulating housing (1) is provided with a plurality of measurement modules on both sides of the wiring block (2), and the wiring block (2) is provided with a plurality of wiring modules (3) corresponding to the measurement modules; The measuring module comprises an insulating switching seat (4) connected via an insulating shielding switching member, the insulating switching seat (4) being connected to an assembly seat (5) via a steering adjustment member, a semi-enclosed mutual inductor (6) being provided on the assembly seat (5), and the semi-enclosed mutual inductor (6) being connected to the assembly seat (5) via a plug-in assembly; The insulating housing (1) located on both sides of the insulating switching seat (4) is provided with a wire groove (7), and an elastic wire control member for arranging the wires is provided in the wire groove (7); The insulating shielding switching member comprises a switching damping sliding groove (13) provided on the insulating shell seat (1), and the insulating switching seat (4) is slidably arranged on the switching damping sliding groove (13).

2. A current transmitter according to claim 1, characterized in that: The semi-enclosed mutual inductor (6) is composed of an insulating resin shell, a steel sheet semi-enclosed core arranged inside the insulating resin shell, and a coil winding wound on the steel sheet semi-enclosed core. The wires on both sides of the coil winding are respectively connected to terminal plugs (8), and the assembly seat (5) is provided with a wire jack (9) for plugging the terminal plugs (8).

3. The current transmitter according to claim 2, characterized in that: An assembly opening adapted to the semi-closed mutual inductor (6) is provided on the assembly seat (5), a steel sheet assembly core (10) is provided at the bottom of the assembly opening, and the steel sheet assembly core (10) is combined with the steel sheet semi-closed core to form a closed-loop core.

4. The current transmitter according to claim 2, characterized in that: The plug-in assembly comprises a buckle opening (11) provided on an assembly opening, and a buckle piece (12) detachably connected to the buckle opening (11) is provided at the bottom of the insulating resin housing.

5. The current transmitter according to claim 1, characterized in that: The steering adjustment member comprises a telescopic opening (14) provided on the insulating switching seat (4); the inner wall of the telescopic opening (14) is connected to a T-shaped pressure column (15) via a downward pressure spring; the T-shaped pressure column (15) is connected to the bottom of the assembly seat (5); and a rubber washer (16) for increasing friction is provided on the insulating switching seat (4).

6. The current transmitter according to claim 1, characterized in that: The elastic wire control member comprises an elastic column (17) slidably arranged in the wire groove (7); a wire limiting disk (18) is arranged at the end of the elastic column (17); the wire limiting disk (18) is connected to the inner wall of the wire groove (7) via a sleeve spring sleeved on the outer wall of the elastic column (17); the wiring module (3) is connected to the wire jack (9) via a wire, and the wire is wound around the wire limiting disk (18).

7. The packaging structure of a current transmitter according to any one of claims 1 to 6, characterized in that: The invention comprises a shielding packaging shell (19), wherein the shielding packaging shell (19) is connected to an insulating shell base (1) via locking pieces located on both sides, and a test line guide opening is provided above the insulating shell base (1), and the test line guide opening is provided with a rubber ring (20).

8. The packaging structure according to claim 7, wherein: The locking member comprises locking clamps (21) arranged on both sides of the insulating shell base (1), and slots (22) adapted to the locking clamps (21) are provided on both sides of the shielding packaging shell (19) for assembling the insulating shell base (1) and the shielding packaging shell (19).

Images