Hard-connected high-precision current sampling unit

Abstract

The utility model belongs to the field of current sampling units, and particularly relates to a hard-connection high-precision current sampling unit, which comprises an upper cover plate, a lower shell, a winding iron core with a primary line and a conversion module with a pin header seat, the upper cover plate and the lower shell are matched to form a mounting shell, the winding iron core is positioned in a cavity of the lower shell, and the conversion module is positioned in the cavity of the lower shell. A support with an installation groove is arranged in a cavity of the lower shell body, the conversion module is inserted into the installation groove, connected with the lower shell body and arranged perpendicular to the upper cover plate, the upper cover plate is provided with a pin header insertion groove parallel to the conversion module, and pins on the pin header seat are vertically upward and installed in cooperation with the pin header insertion groove. The upper cover plate and the lower shell are fixedly connected through the connecting assembly, and the upper cover plate and the mounting groove are matched to vertically limit the conversion module, so that the conversion module can be quickly mounted, the structure of the sampling unit is simplified, the manufacturing cost is reduced, and the assembling efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of current sampling units, and in particular relates to a hard-connected high-precision current sampling unit. Background Art

[0002] To quickly connect the current sampling unit to the unit being tested, a winding core, pin header, and conversion module are typically integrated into a mounting shell. The secondary wire of the winding core is connected to the analog signal input of the conversion module. The primary wire and pin header of the winding core, exposed outside the mounting shell, are then connected to other devices for current sampling and signal output. Existing current sampling units typically divide the mounting shell into an upper cover for mounting the conversion module and a lower shell for mounting the winding core. A fixing portion is provided on the upper cover so that the conversion module is mounted horizontally and parallel to the upper cover. This installation method not only makes the upper cover thicker and requires more material, but also complicates the connection and fixation between the conversion module, the upper cover, and the pin header, affecting the overall assembly efficiency of the current sampling unit. Utility Model Content

[0003] In order to solve the problems existing in the above-mentioned prior art, the utility model provides a hard-connected high-precision current sampling unit, which can realize the rapid installation of the conversion module, simplify the structure of the sampling unit, reduce manufacturing costs and improve assembly efficiency.

[0004] The specific technical solution adopted in this utility model is:

[0005] A hard-connected high-precision current sampling unit includes an upper cover, a lower shell, a winding core with a primary wire, and a conversion module with a pin header. The upper cover and the lower shell are matched to form a mounting shell, and the winding core is located in the cavity of the lower shell. The key is that a bracket with a mounting slot is provided in the cavity of the lower shell, the conversion module is inserted into the mounting slot and connected to the lower shell and arranged perpendicular to the upper cover, the upper cover is provided with a pin header slot parallel to the conversion module, the pins on the pin header are vertically upward and matched with the pin header slot, the upper cover and the lower shell are fixedly connected by a connecting assembly, and the upper cover and the mounting slot are matched to form a vertical limit for the conversion module.

[0006] The pin header is an L-shaped curved pin composed of interconnected vertical sections and horizontal sections. The vertical section is installed in conjunction with the pin header slot, and the end of the horizontal section passes through the conversion module and is arranged toward the winding core.

[0007] The upper end of the installation groove is V-shaped and open.

[0008] The connecting assembly includes a group of slots respectively arranged on the side walls of the lower shell and buckles arranged on the upper cover. The buckles are vertical hook-shaped structures. The upper cover and the lower shell are fixedly connected by the cooperation of the buckles and the slots.

[0009] The upper cover is located in the cavity of the lower shell and is fitted with the side wall of the lower shell. The card slot is located on the inner side of the lower shell.

[0010] The connecting assembly includes a guide groove provided on the lower shell and a guide protrusion provided on the upper cover plate and matched with the guide groove. The primary wire extends out of the lower shell through the guide groove and is located below the guide protrusion.

[0011] The upper cover is provided with a group of pillars, and the lower shell is provided with a group of reinforcing half ribs. The lower ends of the pillars and the upper ends of the reinforcing half ribs are matched and fitted to form a vertical limit for the upper cover.

[0012] Both sides of the lower shell are respectively provided with connecting protrusions, and the connecting protrusions are provided with pre-installed holes for self-tapping screws.

[0013] The beneficial effects of the utility model are:

[0014] The utility model adopts a technical solution in which a bracket with a mounting slot is provided on the lower shell and the conversion module is directly inserted into the lower shell, which greatly simplifies the installation structure and installation steps of the conversion module and the mounting shell, saves the materials required for the production of the mounting shell, saves manufacturing costs, and improves the assembly efficiency of the sampling unit;

[0015] A pin header slot is provided on the upper cover, and the upper cover is simultaneously installed with the pin header when it is engaged with the lower shell from top to bottom. In addition, the mounting grooves of the upper cover and the upper bracket of the lower shell jointly limit the conversion module, simplifying the assembly steps and making the structural layout of the sampling unit more reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 Schematic diagram of the structure of the upper cover;

[0018] Figure 3 It is a structural diagram of the lower shell and the winding core;

[0019] Figure 4 It is a structural diagram of the conversion module and the pin header;

[0020] In the accompanying drawings, 1. upper cover, 2. lower shell, 3. primary wire, 4. winding core, 5. pin header, 6. conversion module, 7. mounting slot, 8. bracket, 9. pin header slot, 10. pin header, 1001. vertical section, 1002. horizontal section, 11. slot, 12. buckle, 13. guide groove, 14. guide protrusion, 15. pillar, 16. reinforcing half rib, 17. connecting protrusion, 18. pre-installed hole for self-tapping screws. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0022] Specific implementation examples Figure 1 As shown, a hard-wired high-precision current sampling unit includes an upper cover 1, a lower housing 2, a winding core 4 with a primary wire 3, and a conversion module 6 with a pin header 5. The upper cover 1 and lower housing 2 form a mounting shell, and the winding core 4 is located within the cavity of the lower housing 2. Crucially, a bracket 8 with a mounting slot 7 is provided within the cavity of the lower housing 2. The conversion module 6 is inserted into the mounting slot 7 and connected to the lower housing 2, and is arranged perpendicular to the upper cover 1. The upper cover 1 is provided with a pin header slot 9 parallel to the conversion module 6. Pins 10 on the pin header 5 are installed vertically upward in conjunction with the pin header slot 9. The upper cover 1 and lower housing 2 are fixedly connected by a connecting assembly. The upper cover 1 and the mounting slot 7 form a vertical limit for the conversion module 6. The conversion module 6 is a circuit board.

[0023] During assembly, the conversion module 6 is vertically inserted into the mounting groove 7, and the mounting groove 7 forms a horizontal limit for the conversion module 6. Then the upper cover 1 is assembled with the lower shell 2 from top to bottom. After the upper cover 1 is installed in place, it matches the mounting groove 7 to form a vertical limit for the conversion module 6 to prevent the conversion module 6 from falling. During the installation of the upper cover 1, the pin header 10 extends out of the mounting shell along the pin header slot 9 on the upper cover 1. The setting of the pin header slot 9 can also prevent the upper cover 1 from being reversed. This effectively simplifies the assembly steps and the overall structure of the mounting shell, optimizes the structural layout, reduces the production materials used for the mounting shell, reduces manufacturing costs, and improves assembly efficiency.

[0024] The pin header 10 is an L-shaped curved pin consisting of an interconnected vertical section 1001 and a horizontal section 1002. The vertical section 1001 is installed in conjunction with the pin header slot 9, and the end of the horizontal section 1002 passes through the conversion module 6 and is arranged toward the winding core 4. After the conversion module 6 is inserted into the installation slot 7, the end of the horizontal section 1002 is directed toward the winding core 4, which facilitates the rapid connection between the coil on the winding core 4 and the horizontal section 1002, optimizes the assembly steps, and further improves the installation efficiency.

[0025] The upper end of the installation slot 7 is provided with a V-shaped opening, and the V-shaped opening forms a pre-guide for the conversion module 6 , which helps the conversion module 6 to be quickly inserted into the installation slot 7 .

[0026] The connecting assembly includes a group of card slots 11 respectively arranged on the side walls of the lower shell 2 and a buckle 12 arranged on the upper cover 1. The card slots 11 are respectively arranged on the two opposite side walls of the lower shell 2. The buckle 12 is a vertical hook-shaped structure. The upper cover 1 and the lower shell 2 are fixedly connected by the cooperation of the buckle 12 and the card slot 11. The upper cover 1 is installed downward, and the buckle 12 is squeezed inward by the side wall of the lower shell 2. When the buckle 12 reaches the card slot 11, the buckle 12 rebounds, and the buckle 12 extends into the card slot 11 to form a connection with the card slot 11, thereby realizing the connection and fixation between the upper cover 1 and the lower shell 2.

[0027] The upper cover 1 is located in the cavity of the lower shell 2 and is fitted against the side wall of the lower shell 2. The card slot 11 is located on the inner side of the lower shell 2. After assembly, the upper end of the upper cover 1 is flush with the upper end of the lower shell 2, thereby improving the connection stability between the upper cover 1 and the lower shell 2 and effectively preventing the upper cover 1 from falling.

[0028] The connection assembly includes a guide groove 13 formed on the lower housing 2 and a guide protrusion 14 on the upper cover 1 that matches the guide groove 13. The primary wire 3 extends out of the lower housing 2 through the guide groove 13 and is positioned below the guide protrusion 14. When the upper cover 1 and the lower housing 2 are assembled, the guide protrusion 14 is first inserted into the guide groove 13 to form a guiding fit. The upper cover 1 continues to descend, and the clip 12 is connected to the slot 11. The primary wire 3 passes through the guide groove 13, which not only reduces the material used to make the mounting housing but also optimizes the mold structure. The guide groove 13 and the bracket 8 are located on either side of the winding core 4.

[0029] Furthermore, pillars 15 are respectively provided at the four corners of the upper cover 1, and reinforcing half ribs 16 are respectively provided at the four corners of the lower shell 2. After the upper cover 1 is installed in place, the lower end of the pillar 15 is matched with the upper end of the reinforcing half rib 16. The pillar 15 and the reinforcing half rib 16 cooperate to form a vertical limit for the upper cover 1, preventing the upper cover 1 from being squeezed and damaging the connecting components, and at the same time preventing the upper cover 1 from continuing to move downward to squeeze the primary line 3, further improving the connection stability between the upper cover 1 and the lower shell 2.

[0030] Furthermore, connecting protrusions 17 are respectively provided on both sides of the lower shell 2, and self-tapping screw pre-installed holes 18 are provided on the connecting protrusions 17. When the sampling unit is in use, the sampling unit can be installed on the mounting plate at the desired mounting position with the help of the self-tapping screw pre-installed holes 18. The screws are inserted from the mounting plate into the self-tapping screw pre-installed holes 18 and rotated downward to complete the fixing of the sampling unit. The connecting protrusions 17 and the self-tapping screw pre-installed holes 18 can realize the rapid installation of the sampling unit.

Claims

1. A hard-connected high-precision current sampling unit, comprising an upper cover (1), a lower shell (2), a winding core (4) with a primary wire (3), and a conversion module (6) with a pin header (5), wherein the upper cover (1) and the lower shell (2) are matched to form a mounting shell, and the winding core (4) is located in a cavity of the lower shell (2), characterized in that: A bracket (8) with a mounting groove (7) is provided in the cavity of the lower shell (2), the conversion module (6) is inserted into the mounting groove (7) and connected to the lower shell (2) and is vertically arranged with the upper cover (1), the upper cover (1) is provided with a pin header slot (9) parallel to the conversion module (6), the pin header (10) on the pin header seat (5) is vertically upward and matched with the pin header slot (9), the upper cover (1) and the lower shell (2) are fixedly connected by means of a connecting assembly, and the upper cover (1) and the mounting groove (7) are matched to form a vertical limit for the conversion module (6).

2. The hard-connected high-precision current sampling unit according to claim 1, characterized in that: The pin header (10) is an L-shaped curved pin composed of a vertical section (1001) and a horizontal section (1002) connected to each other. The vertical section (1001) is installed in conjunction with the pin header slot (9), and the end of the horizontal section (1002) passes through the conversion module (6) and is arranged toward the winding core (4).

3. The hard-connected high-precision current sampling unit according to claim 1, characterized in that: The upper end of the installation groove (7) is V-shaped and open.

4. The hard-connected high-precision current sampling unit according to claim 1, characterized in that: The connecting assembly comprises a group of slots (11) respectively arranged on the side walls of the lower shell (2) and buckles (12) arranged on the upper cover (1); the buckles (12) are in the form of vertical hooks; the upper cover (1) and the lower shell (2) are fixedly connected by means of the cooperation between the buckles (12) and the slots (11).

5. The hard-connected high-precision current sampling unit according to claim 4, characterized in that: The upper cover plate (1) is located in the cavity of the lower shell (2) and is arranged in close contact with the side wall of the lower shell (2), and the card slot (11) is located on the inner side of the lower shell (2).

6. The hard-connected high-precision current sampling unit according to claim 4, characterized in that: The connecting assembly includes a guide groove (13) provided on the lower shell (2) and a guide protrusion (14) provided on the upper cover (1) and matched with the guide groove (13); the primary line (3) extends out of the lower shell (2) through the guide groove (13); and the primary line (3) is located below the guide protrusion (14).

7. The hard-connected high-precision current sampling unit according to claim 6, characterized in that: The upper cover plate (1) is provided with a group of pillars (15), and the lower shell (2) is provided with a group of reinforcing half ribs (16). The lower ends of the pillars (15) and the upper ends of the reinforcing half ribs (16) are matched and fitted to form a vertical limit for the upper cover plate (1).

8. The hard-connected high-precision current sampling unit according to claim 1, characterized in that: Connecting protrusions (17) are respectively provided on both sides of the lower shell (2), and self-tapping screw pre-installed holes (18) are provided on the connecting protrusions (17).

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