U-shaped over-current needle type high-precision mounting structure of closed-loop current sensor

Abstract

The utility model belongs to the technical field of current sensor mounting structures, and particularly relates to a U-shaped over-current needle type high-precision mounting structure of a closed-loop current sensor, which comprises a shell, a PCB (Printed Circuit Board) and a U-shaped over-current needle, the shell comprises a shell body and a sealing cover connected to the upper side surface of the shell body, the inner side surface of the bottom of the shell body is integrally connected with a packaging block, and the bottom of the shell body is integrally connected with the PCB. The middle portions of the U-shaped overflowing needles are fixed in the packaging block, the two ends of each U-shaped overflowing needle penetrate through the sealing cover, the PCB is fixedly installed in the shell, the U-shaped overflowing needles are integrally connected with the packaging block in the shell, the PCB can be integrally machined through the injection molding technology, and therefore the installation precision of the U-shaped overflowing needles is improved, the installation precision is higher, and the service life of the PCB is prolonged. And the yield of production is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of current sensor installation structures, in particular to a U-shaped overcurrent needle type high-precision installation structure for a closed-loop current sensor. Background Art

[0002] A closed-loop current sensor is a sensor used to measure current. Its working principle is based on a closed-loop feedback system. It adjusts the output in real time to ensure that the measured value is consistent with the expected value. The closed-loop current sensor first measures by sensing or sampling the current. Commonly used sensor elements include Hall effect sensors or current transformers. These sensors convert the current into a voltage or current signal.

[0003] For example, the main structure of a programmable Hall current sensor disclosed in the utility model patent with patent announcement number CN220105140U is adopted, which has a housing cavity for accommodating a programmable Hall element. The main structure of the programmable Hall current sensor includes an upper cover and a plurality of pins, one end of each of the pins is connected to the above-mentioned programmable Hall element, and the other end of each of the pins is plugged into the upper cover, so that the upper cover completely or partially covers the above-mentioned housing cavity. When installing the Hall current sensor, it is necessary to manually install the sensor body in the housing cavity. Manual installation is prone to cause the pins to tilt, and the accuracy is not high. In the process of closing the upper cover, the pins are deflected, thereby reducing the yield rate. Therefore, a closed-loop current sensor U-shaped overcurrent pin high-precision installation structure that is easy to install, has high installation accuracy, and improves the yield rate is needed. Utility Model Content

[0004] In view of the above problems, the utility model proposes a U-shaped overcurrent pin high-precision installation structure for a closed-loop current sensor, which effectively solves the problem in the prior art that manual installation easily causes pin tilt, low precision, and pin deflection during the process of closing the cover, thereby reducing the yield rate.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a closed-loop current sensor U-shaped overcurrent needle high-precision installation structure, including an outer shell, a PCB board and a U-shaped overcurrent needle, the outer shell includes a shell and a cover connected to the upper side of the shell, the bottom inner side of the shell is integrally connected with a packaging block, the middle parts of multiple U-shaped overcurrent needles are fixed in the packaging block and the two ends of the U-shaped overcurrent needle pass through the cover, the PCB board is fixedly installed in the shell, and is integrally connected with the packaging block in the shell through the U-shaped overcurrent needle, so that it can be processed as a whole using an injection molding process, thereby improving the installation accuracy of the U-shaped overcurrent needle, thereby making the installation accuracy higher and improving the production yield.

[0006] Furthermore, a mounting platform is provided in the shell, and the PCB board is installed overhead through the provided mounting platform, thereby improving the heat dissipation efficiency and ventilation performance of the PCB and reducing electromagnetic interference.

[0007] Furthermore, a positioning column is provided on the inner bottom surface of the shell, and a positioning hole corresponding to the position of the positioning column is opened on the PCB board. The PCB board is positioned by the provided positioning column, which facilitates the installation of the PCB board.

[0008] Furthermore, a fixing column is provided on the lower side of the cover, and the lower end of the fixing column abuts against the upper side of the PCB board. The PCB board is fixed by pressing the upper side of the PCB board by setting a positioning column to prevent the PCB board from shaking.

[0009] Furthermore, an outer hook is provided on the edge of the lower side of the cover, and a hook hole corresponding to the outer hook is provided on the side of the shell, and the cover can be quickly installed on the upper side of the shell by cooperating with the outer hook and the hook hole.

[0010] Furthermore, the lower side of the cover is provided with an anti-climbing electric stopper surrounding the outer side of the U-shaped current needle, and the anti-climbing electric stopper is provided to improve the structural strength of the position where the cover passes through the U-shaped current needle.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model connects the U-shaped current-flowing needle with the packaging block in the shell in an integral manner, so that the U-shaped current-flowing needle can be processed in an integral manner by an injection molding process, thereby improving the installation accuracy of the U-shaped current-flowing needle, thereby making the installation accuracy higher and improving the production yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional schematic diagram of the disassembled structure of the utility model;

[0014] Figure 2 It is a three-dimensional schematic diagram of the lower side structure of the cover;

[0015] Figure 3 A top view of the shell.

[0016] In the figure: 1. outer shell; 11. shell; 12. cover; 13. packaging block; 14. mounting table; 15. positioning column; 16. fixing column; 17. external hook; 18. hook hole; 19. anti-climbing block; 2. PCB board; 3. U-shaped overcurrent needle. DETAILED DESCRIPTION

[0017] 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.

[0018] like Figure 1-Figure 3 As shown, a closed-loop current sensor U-shaped overcurrent needle type high-precision installation structure includes a shell 1, a PCB board 2, and a U-shaped overcurrent needle 3, the shell 1 includes a shell 11 and a cover 12 connected to the upper side of the shell 11, the bottom inner side of the shell 11 is integrally connected with a packaging block 13, the middle parts of a plurality of the U-shaped overcurrent needles 3 are fixed in the packaging block 13, the cover 12 is provided with a through hole corresponding to the position of the U-shaped overcurrent needle 3, the two ends of the U-shaped overcurrent needle 3 pass through the through hole on the cover 12 and are exposed, the shell 11, the packaging block 13, and the U-shaped overcurrent needle 3 are integrally formed in a mold by an integrated injection molding process, and the PCB board 2 is fixedly installed in the shell 11.

[0019] In this embodiment, a mounting platform 14 is integrally connected to the shell 11 . The mounting platform 14 is located at the four corners of the shell 11 , and the lower side of the PCB board 2 is in contact with the upper side of the mounting platform 14 .

[0020] In this embodiment, the inner bottom surface of the housing 11 is provided with an integrally connected positioning column 15 , and the PCB board 2 is provided with a positioning hole corresponding to the position of the positioning column 15 .

[0021] In this embodiment, a fixing column 16 is integrally connected to the lower side of the cover 12 , and the lower end of the fixing column 16 abuts against the upper side of the PCB board 2 .

[0022] In this embodiment, the lower side edge of the cover 12 is integrally connected with an external hook 17, the lower end of the external hook 17 protrudes outward, and the side of the shell 11 is provided with a hook hole 18 corresponding to the external hook 17. When the cover 12 is covered on the upper side of the shell 1, the lower end of the external hook 17 is clamped in the hook hole 18.

[0023] In this embodiment, the lower side of the cover 12 is integrally connected with an anti-climbing blocker 19 surrounding the outer side of the U-shaped current needle 3 .

[0024] During production, the utility model aligns the positioning hole on the PCB board 2 with the positioning column 15 and installs it in the shell 11, then aligns the penetration hole on the cover 12 with the U-shaped current needle 3, presses the cover 12 downward along the U-shaped current needle 3, and connects the external hook 17 provided on the lower side of the cover 12 with the hook hole 18 provided on the shell 11 to complete the installation.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A U-shaped overcurrent needle type high-precision installation structure for a closed-loop current sensor, characterized in that: It includes an outer shell, a PCB board and a U-shaped overcurrent needle. The outer shell includes a shell and a cover connected to the upper side of the shell. The bottom inner side of the shell is integrally connected with a packaging block. The middle parts of multiple U-shaped overcurrent needles are fixed in the packaging block and the two ends of the U-shaped overcurrent needles pass through the cover. The PCB board is fixedly installed in the shell.

2. The U-shaped overcurrent needle type high-precision installation structure of the closed-loop current sensor according to claim 1 is characterized in that: A mounting platform is arranged in the shell.

3. The U-shaped overcurrent needle type high-precision installation structure of a closed-loop current sensor according to claim 1 is characterized in that: The inner bottom surface of the shell is provided with a positioning column, and the PCB board is provided with a positioning hole corresponding to the position of the positioning column.

4. The U-shaped overcurrent needle type high-precision installation structure of a closed-loop current sensor according to claim 1 is characterized in that: A fixing column is arranged on the lower side of the cover, and the lower end of the fixing column abuts against the upper side of the PCB board.

5. The U-shaped overcurrent needle type high-precision installation structure of a closed-loop current sensor according to claim 1, characterized in that: The lower side edge of the cover is provided with an external hook, and the side surface of the shell is provided with a hook hole corresponding to the external hook.

6. The U-shaped overcurrent needle type high-precision installation structure of a closed-loop current sensor according to claim 1, characterized in that: The lower side of the cover is provided with an anti-climbing electric block surrounding the outer side of the U-shaped current-carrying needle.

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