Current sensor structure with high assembly efficiency

Abstract

The utility model relates to a current sensor structure with high assembly efficiency. The device comprises a device shell which is used for accommodating an insulating framework and a PCB corresponding to the insulating framework; the insulating framework comprises a framework body, a plurality of contact pin connecting areas are arranged on the first end face of the framework body, and a plurality of wire end contact pins used for being electrically connected with the PCB are arranged in each contact pin connecting area; any thread end contact pin comprises a pin body part and an elastic pin head part capable of elastically stretching out and drawing back, the elastic pin head part is arranged on the pin body part, and the elastic stretching out and drawing back direction of the elastic pin head part is perpendicular to the length direction of the thread end contact pin. The wire end contact pin is vertically assembled in the contact pin connecting area through the pin body part, and the elastic pin head part is inserted and locked in a corresponding wire end contact pin hole in the PCB through elastic stretching of the elastic pin head part. The assembly efficiency can be effectively improved, the production and maintenance cost is reduced, and safety and reliability are achieved.

Description

Technical Field

[0001] The utility model relates to a current sensor structure, in particular to a current sensor structure with high assembly efficiency. Background Art

[0002] The current sensor is used to measure current. It is a secondary device for measuring instruments, relay protection, etc. in the power system, as well as a device for obtaining primary circuit current information. It is also an important electrical equipment in the power system, carrying the functions of isolating high-voltage and low-voltage systems and converting high-voltage quantities to low-voltage quantities.

[0003] The current sensor based on magnetic modulation or fluxgate can measure the current signal under DC and AC at the same time. It is the current sensor with the highest measurement accuracy. It consists of two parts: coil and processing circuit. Coil production is the most complex and time-consuming part of the current sensor process, which determines the processing efficiency, reliability, testability and cost.

[0004] According to the implementation method, coils can be divided into two categories: frameless and framed. The frameless coil has a simple winding process, but it is difficult to distinguish different outlets and terminals with the same name. It is easy to make mistakes during winding and assembly, and wiring is difficult, resulting in low testability. The frameless coil has no positioning and fixing mechanism with the housing and PCB board, which makes assembly difficult and inefficient.

[0005] The coil with a skeleton is fixed to the housing and the PCB board by introducing a skeleton structure, and the outlet end is led out to the pin on the skeleton, which can solve a series of problems such as distinguishing the outlet end of the winding wire and the same-name end, assembly efficiency, and testability. The coil with a skeleton generally includes an insulating skeleton and an enameled wire wound on the insulating skeleton. The insulating skeleton includes a number of supporting structures, which are used to support and lock the PCB board as a processing circuit and the housing.

[0006] At present, the insulating skeleton is mostly connected to the PCB board using columnar pins. After the columnar pins are inserted into the PCB board, in order to ensure the reliability of the connection, the joint between the pins and the PCB board needs to be welded. The production process adds a welding process, which leads to low assembly efficiency between the insulating skeleton and the PCB board, and environmental problems such as welding fumes. The welding process has high requirements for process control. Improper control will cause quality problems such as cold soldering, affecting long-term working reliability. After assembly by welding, the skeleton and PCB board are also difficult to remove, which brings troubles to maintenance operations such as repair and replacement. Summary of the invention

[0007] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a current sensor structure with high assembly efficiency. Welding is avoided during the assembly of the finished product, the process is simpler, the assembly efficiency can be effectively improved, the production and maintenance costs can be reduced, the reliability and durability of the connection can be enhanced, and disassembly and assembly are also very convenient, thereby reducing the repair and maintenance costs.

[0008] According to the technical solution provided by the utility model, a current sensor structure with high assembly efficiency is provided, and the current sensor structure includes:

[0009] A device housing, used to accommodate an insulating frame and a PCB board corresponding to the insulating frame;

[0010] The insulating skeleton comprises a skeleton body, wherein the skeleton body comprises a first end face directly corresponding to the PCB board and a second end face directly corresponding to the first end face, wherein:

[0011] A plurality of pin connection areas are arranged on the first end surface of the frame body, and a plurality of wire end pins for electrical connection with the PCB board are arranged in each pin connection area;

[0012] Any thread insertion needle includes a needle body and an elastic needle head that can be elastically retracted, wherein:

[0013] The elastic needle head is arranged on the needle body, and the elastic expansion and contraction direction of the elastic needle head is perpendicular to the length direction of the thread insertion needle;

[0014] The thread end pin is vertically assembled in the pin connection area through the pin body.

[0015] By utilizing the elastic expansion and contraction of the elastic needle head, the elastic needle head is plugged and locked into the corresponding wire head pin hole on the PCB board.

[0016] The needle body is in the shape of a flat plate, the elastic needle head is located at the end of the needle body, and the length direction of the elastic needle head is consistent with the length direction of the needle body;

[0017] A needle hole penetrating the elastic needle head is arranged in the elastic needle head, and the shape of the elastic needle head includes a rhombus.

[0018] The needle body is provided with at least one needle body hole and at least one threading hole, wherein:

[0019] The needle body hole and the threading hole both pass through the needle body;

[0020] The threading hole is located on the needle body and adjacent to the elastic needle head.

[0021] A frame body hole is provided in the central area of ​​the frame body, wherein the frame body hole is distributed in the central area of ​​the frame body and penetrates the frame body;

[0022] A plurality of evenly distributed supporting and locking claws are arranged in the frame body hole, wherein the number of the supporting and locking claws is not less than the number of the pin connection areas;

[0023] The support locking claw comprises a support locking plate fixedly connected to the inner wall of the frame body hole and a support locking column arranged at the end of the support locking plate, and the support locking column is located above the first end surface of the frame body;

[0024] The corresponding axial directions of the support locking plate and the support locking column are parallel to the length direction of the thread pin. When the elastic needle head is inserted and locked in the corresponding thread pin hole on the PCB board, the support locking column is simultaneously embedded in the support locking hole on the PCB board.

[0025] The supporting locking claw further comprises a housing positioning portion distributed on the second end surface of the frame body, wherein:

[0026] The housing positioning portion comprises a second end panel disposed on the second end surface of the frame body and a frame positioning locking block disposed on the second end panel;

[0027] The frame positioning locking block matches the frame positioning groove at the bottom end of the device housing. When the frame positioning locking block is aligned and placed in the frame positioning groove, the insulating frame can be assembled in the device housing.

[0028] The device housing comprises a housing body and a housing cover plate for closing the housing body, wherein:

[0029] A hollow inner shell ring column is arranged in the shell body, and the insulating frame and the PCB board are both sleeved on the inner shell ring column to accommodate the insulating frame and the PCB board in the shell body;

[0030] The PCB board is adapted to be electrically connected to the device connector on the shell body so that the PCB board can be led out by using the device connector.

[0031] A shell support block is arranged on the outer wall of the shell body, so as to support at least the device connector by the shell support block, wherein:

[0032] The device connector includes a plurality of connection lead-out bodies adapted to be connected with the PCB board, one end of the connection lead-out body is adapted to be electrically connected with the PCB board, and the other end of the connection lead-out body is placed in a connection lead-out slot on the housing support block;

[0033] Each connection lead-out body is isolated from other connection lead-out bodies by the connection lead-out slot in which it is located.

[0034] The device connector also includes a pin seat for connecting all the connection leads into one body, wherein:

[0035] The pin holder is located between the two ends of any connection lead-out body;

[0036] The connecting lead-out body comprises a first lead-out pin for connecting to a PCB board and a second lead-out pin adapted to connect to the first lead-out pin, the axis direction of the first lead-out pin is perpendicular to the PCB board, and the second lead-out pin is L-shaped after being connected and matched with the first lead-out pin;

[0037] Each second lead-out pin is placed in a connection lead-out slot.

[0038] For any elastic needle head that is plugged and locked into the pin hole of the wire head, the elastic needle head passes through the PCB board;

[0039] A cover plate groove adapted to the PCB board is arranged on one side of the shell cover plate and the PCB board, and a PCB board pressing mechanism adapted to the PCB board and a frame pressing mechanism adapted to the insulating frame are arranged in the cover plate groove, wherein:

[0040] When the shell cover is clamped on the shell body, the PCB board pressing mechanism is used to contact the PCB board to press the PCB board into the shell body;

[0041] At the same time, the frame pressing mechanism is used to contact the insulating frame to press the insulating frame into the shell body.

[0042] A plurality of supporting connection columns are arranged on the shell supporting block, and the axes of the supporting connection columns are perpendicular to the plane where the shell supporting block is located.

[0043] A spring positioning slot unit is also provided on the housing support block, wherein:

[0044] The spring positioning slot unit includes at least one spring positioning slot, and the spring positioning slot is distributed on the side of the shell support block, and the length direction of the spring positioning slot is consistent with the length direction of the shell support block.

[0045] The advantages of the utility model are as follows: a plurality of thread pins are arranged in the pin connection area, and the thread pins are arranged in the form of a needle body part and an elastic needle head part. The elastic needle head part can be used to cooperate with the thread pin hole on the PCB board, that is, the elastic needle head part can be pushed into the thread pin hole, and can be mutually locked with the PCB board after entering the thread pin hole, which can avoid the welding process between the thread pin and the PCB board, improve the assembly efficiency, and reduce the cost; avoid the problems of welding thermal stress and solder joint failure, provide higher reliability than welding, and is easy to disassemble and assemble, and is conducive to repair and maintenance.

[0046] In addition, the structure of the support locking claw can be simplified. It only needs to use the positioning of the support locking column and the PCB board and the support between the support locking plates to avoid the form of setting an elastic locking hook at the end of the support locking plate in the prior art, further improving the assembly efficiency, reducing the assembly and maintenance costs, avoiding the use of elastic locking hooks, and allowing the insulation frame to have a wider range of material choices. Materials with higher hardness and temperature resistance grades can be selected to improve the comprehensive performance of the insulation frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of an embodiment of the utility model.

[0048] Figure 2 This is a schematic diagram of an embodiment of the utility model after the shell cover is removed.

[0049] Figure 3 This is a schematic diagram of an embodiment of the utility model after removing the shell cover and the PCB board.

[0050] Figure 4 It is a schematic diagram of an embodiment of the shell body of the utility model.

[0051] Figure 5 This is a three-dimensional diagram of an embodiment of the utility model in which the PCB board is inside the shell cover.

[0052] Figure 6 This is a schematic structural diagram of an embodiment of the utility model in which a PCB board is inside a shell cover.

[0053] Figure 7 The figure is a schematic diagram of an embodiment of the connection and cooperation between the insulating frame and the PCB board of the utility model.

[0054] Figure 8 This is a stereoscopic diagram of an embodiment of the insulating frame of the utility model.

[0055] Fig. 9 The figure is a schematic structural diagram of an embodiment of the insulating frame of the utility model.

[0056] Fig.10 It is a stereoscopic diagram of an embodiment of the thread end pin of the utility model.

[0057] Fig.11 The present invention is a schematic diagram of an embodiment of the connection and cooperation between the device connector and the PCB board.

[0058] Fig.12 It is a three-dimensional diagram of an embodiment of the shell cover of the utility model.

[0059] Description of the accompanying drawings: 1-shell body, 2-shell cover, 3-shell hole, 4-indicator light, 5-shell support block, 6-support connecting column, 7-spring positioning slot, 8-lead out the second pin, 9-PCB board, 10-indicator light body, 11-shell inner ring column hole, 12-shell inner ring column, 13-lead out the first pin, 14-thread pin, 15-shell inner guide column, 16-pin seat, 17-insulating skeleton, 18-skeleton positioning groove, 19-connection lead-out groove body, 20-cover hole, 21-cover body, 22-cover connecting ring, 23-connecting ring avoidance groove, 24-PCB board connector hole, 25-thread pin hole, 26-support locking hole, 27 -connecting ring guide positioning groove, 28-cover plate indication window, 29-cover plate locking block, 30-PCB board hole, 31-pin area seat, 32-pin support seat, 33-pin positioning block, 34-support locking column, 35-support locking plate, 36-skeleton positioning locking block, 37-needle body, 38-needle body hole, 39-elastic needle head, 40-needle head hole, 41-support contact surface, 42-first end face, 43-second end panel, 44-second end face, 45-skeleton body hole, 46-threading hole, 47-cover plate light guide, 48-cover plate support outer ring, 49-cover plate support inner ring, 50-support locking column clamping block, 51-contact clamping strip. DETAILED DESCRIPTION

[0060] The utility model is further described below in conjunction with specific drawings and embodiments.

[0061] In order to effectively improve assembly efficiency and reduce production and maintenance costs, for a current sensor structure with high assembly efficiency, in one embodiment of the utility model, the current sensor structure includes:

[0062] A device housing, used to accommodate an insulating frame 17 and a PCB board 9 corresponding to the insulating frame 17;

[0063] The insulating skeleton 17 includes a skeleton body, wherein the skeleton body includes a first end face 42 corresponding to the PCB board 9 and a second end face 44 corresponding to the first end face 42, wherein:

[0064] A plurality of pin connection areas are provided on the first end surface 42 of the frame body, and a plurality of wire end pins 14 for electrical connection with the PCB board 9 are provided in each pin connection area;

[0065] Any thread end insertion needle 14 includes a needle body 37 and an elastic needle head 39 that can be elastically retracted, wherein:

[0066] The elastic needle head 39 is disposed on the needle body 37, and the elastic expansion and contraction direction of the elastic needle head 39 is perpendicular to the length direction of the thread end insertion needle 14;

[0067] The thread end pin 14 is vertically assembled in the pin connection area through the pin body 37.

[0068] By utilizing the elastic expansion and contraction of the elastic needle head 39 , the elastic needle head 39 is inserted and locked into the corresponding thread pin hole on the PCB board 9 .

[0069] It can be seen from the above description that a current sensor structure generally includes a device housing and an insulating frame 17 and a PCB board 9 housed in the device housing. That is, the current sensor of the utility model adopts a frame-belt form, and the device housing can be used to seal the insulating frame 17 and the PCB board 9, thereby improving the stability and reliability of the entire current sensor in the use environment.

[0070] The insulating skeleton 17 can adopt the existing commonly used form. Generally, the insulating skeleton 17 at least includes a skeleton body, which is similar to the existing current sensor structure with a skeleton. The insulating skeleton 17 is mainly used for storing the inner magnetic core winding and winding and leading the enameled wire. The specific role of the insulating skeleton 17 in the current sensor coil can be consistent with the existing ones. Fig. 9 , Fig.10 and Fig.11 An embodiment of the frame body used for the insulating frame 17 is shown in the figure. In the figure, the insulating frame 17 is in a circular ring shape, that is, the frame body is in a circular ring shape, and the frame body includes a first end face 42 and a second end face 44, wherein the first end face 42 of the frame body corresponds to the PCB board 9. Generally, in the device housing, the PCB board 9 is located above the insulating frame 17. At this time, the PCB board 9 is adjacent to and directly corresponds to the first end face 42, and the second end face 44 directly corresponds to the first end face 42.

[0071] It should be noted that when forming a current sensor, the coil on the insulating frame 17 needs to be electrically connected to the PCB board 9. The coil is the inner magnetic core winding and the outer coil winding wound by the enameled wire mentioned above. The way of electrically connecting the coil to the PCB board 9 to realize current detection can be consistent with the existing scheme. In order to realize the electrical connection between the PCB boards 9, a plurality of pin connection areas are set on the first end face of the frame body, and a plurality of wire end pins 14 are set in each pin connection area. At this time, the wire end pins 14 can be used to adapt the electrical connection with the coil on the insulating frame, and then the wire end pins 14 can be plugged into the PCB board 9 to achieve the purpose of electrically connecting the coil inside the insulating frame 17 to the PCB board 9.

[0072] The number and distribution position of the pin connection areas on the first end surface 42 of the frame body can be selected according to needs, so as to meet the electrical connection between the coil and the PCB board 9. Fig.10FIG. 4 shows an embodiment of the distribution of the pin connection area on the first end surface 42. In the figure, three pin connection areas are arranged on the first end surface 42, and the three pin connection areas can be evenly distributed on the first end surface 42. A plurality of thread end pins 14 can be arranged in each pin connection area. At this time, the corresponding thread end pins 14 can realize the plug-in electrical connection with the PCB board 9. The number of thread end pins 14 in each pin connection area can be different. Fig.10 Among the three pin connection areas, the number of thread end pins 14 in two of the pin connection areas is two, and the number of thread end pins 14 in one pin connection area is four. Generally, the corresponding length directions of all the thread end pins 14 on the first end surface 42 are parallel to each other, and the length direction of the thread end pins 14 is perpendicular to the plane where the first end surface 42 is located.

[0073] Fig.10 In each pin connection area, a pin area seat 31 and a pin support seat 32 located on the pin area seat 31 are provided. The pin area seat 31 and the pin support seat 32 can both be block-shaped. Of course, other shapes can also be used. The thread end pins 14 are plugged into the pin support seat 32. Generally, the thread end pins 14 on the same pin support seat 32 are parallel to each other.

[0074] In order to improve assembly efficiency and reduce costs, in one embodiment of the utility model, the thread pin 14 adopts the same structural form, wherein the thread pin 14 includes a needle body portion 37 and an elastic needle head portion 39, the elastic needle head portion 39 is disposed at one end of the needle body portion 37, and the elastic needle head portion 39 can be elastically contracted. Specifically, the elastic contraction direction of the elastic needle head portion 39 is perpendicular to the length direction of the thread pin 14. At this time, the elastic needle head portion 39 can be plugged and locked in the thread pin hole 25 of the PCB board 9 by utilizing the elastic contraction ability of the elastic needle head portion 39. Figure 2 and Fig. 9 FIG. 2 shows a schematic diagram of an embodiment in which the elastic needle head 39 of the thread end pin 14 is plugged in and locked.

[0075] Depend on Figure 2 and Fig. 9 It can be seen that the thread pin hole 25 passes through the PCB board 9. Generally, the outer diameter of the elastic needle head 39 in a normal state is larger than the inner diameter of the thread pin hole 25. During assembly, the end of the elastic needle head 39 is first inserted into the thread pin hole 25. By utilizing the elastic contraction ability of the elastic needle head 39, the elastic needle head 39 can be quickly inserted into the thread pin hole 25. By utilizing the elastic recovery ability of the elastic needle head 39, the elastic needle head 39 can be locked in the inserted thread pin hole 25, that is, the mutual locking between the elastic needle head 39 and the PCB board 9 can be achieved.

[0076] As can be seen from the above description, since the elastic needle head 39 can be used to effectively connect the thread end pin 14 with the PCB board 9, compared with the existing columnar thread end pin, the process of welding the thread end pin 14 can be omitted, thereby improving assembly efficiency and reducing costs. In addition, since there is no need to weld the joint between the thread end pin 14 and the PCB board 9, the problem of solder joint failure is avoided, providing higher reliability than welding, facilitating disassembly and assembly, and improving the convenience and feasibility of subsequent maintenance.

[0077] In order to improve the accuracy of assembling the thread end pin 14 in the pin connection area, a pin positioning block 33 can be set on the first end surface 42. The pin positioning block 33 can be used to indicate and position the pin connection area, thereby improving the reliability of automatically assembling the thread end pin 14 in the pin connection area.

[0078] In one embodiment of the present invention, the needle body 37 is in the shape of a flat plate, the elastic needle head 39 is located at the end of the needle body 37, and the length direction of the elastic needle head 39 is consistent with the length direction of the needle body 37;

[0079] A needle hole 40 penetrating the elastic needle head 39 is disposed in the elastic needle head 39 , and the shape of the elastic needle head 39 includes a rhombus.

[0080] Fig.10 , an embodiment of the thread end insertion pin 14 is shown in the figure, in which the needle body 37 is in the shape of a flat plate, the elastic needle head 39 is located at one end of the needle body 37, and the elastic needle head 39 and the needle body 37 are coaxially distributed.

[0081] The needle body 37 and the elastic needle head 39 can be integrally formed. When the needle body 37 and the elastic needle head 39 are integrally formed, at least one needle body hole 38 is provided on the needle body 37. The needle body hole 38 passes through the needle body 37. Fig.10 In the figure, only one needle body hole 38 is provided on the needle body 37. In this case, the needle body hole 38 can be used as a process hole during integral molding, which can increase the adhesion of the thread end pin 14 after injection molding. When integral molding is adopted, the thread end pin 14 can be made of existing commonly used conductive materials, and it is based on ensuring that the elastic needle head 39 has elastic contraction ability.

[0082] In order to provide elastic contraction capability, the elastic needle head 39 has a needle hole 40 therein, and the needle hole 40 passes through the elastic needle head 39 . Fig.10 FIG. 3 shows an embodiment in which the elastic needle head 39 is in a diamond shape. Of course, the elastic needle head 39 can also adopt other shapes or forms so as to meet the requirements of elastic contraction, and can be inserted and locked in the pinhole of the wire head. Fig.10 In the embodiment, when the elastic needle head 39 is also in a flat plate shape, the elastic needle head 9 and the needle body 37 are coplanar.

[0083] Fig.10 , an embodiment is shown in which a threading hole 46 is further provided on the needle body 37. The threading hole 46 passes through the needle body 37 and is adjacent to the elastic needle head 39. Generally, the inner diameter of the threading hole 46 is larger than the diameter of the winding wire. In the figure, the line connecting the threading hole 46 and the needle body hole 38 is consistent with the length direction of the needle body 37. Fig.10 In the embodiment, the threading hole 46 is located above the pin support seat 32, and the needle body hole 38 is located inside the pin support seat 32. At this time, the threading hole 44 located above the pin support seat 32 can be used to thread the winding wire, which is convenient for fixing the winding wire and improving the convenience and reliability of the winding wire threading.

[0084] During assembly, when the needle body 37 is assembled on the pin support seat 32, the entire thread end pin 14 can be fixedly assembled in the corresponding connection pin area. In addition, the joint between the elastic needle head 39 and the needle body 37 can support the PCB board 9, that is, the end of the needle body 37 in contact with the elastic needle head 39 can support the PCB board 9.

[0085] In one embodiment of the present invention, a frame body hole 45 is provided in the central area of ​​the frame body, wherein the frame body hole 45 is distributed in the central area of ​​the frame body and passes through the frame body;

[0086] A plurality of evenly distributed supporting and locking claws are arranged in the frame body hole 45, wherein the number of the supporting and locking claws is not less than the number of the pin connection areas;

[0087] The support locking claw comprises a support locking plate 35 fixedly connected to the inner wall of the frame body hole 45 and a support locking column 34 arranged at the end of the support locking plate 35, and the support locking column 34 is located above the first end surface 42 of the frame body;

[0088] The corresponding axial directions of the support locking plate 35 and the support locking column 34 are parallel to the length direction of the thread end pin 14. When the elastic needle head 39 is inserted into and locked in the corresponding thread end pin hole 25 on the PCB board 9, the support locking column 34 is simultaneously embedded in the support locking hole 26 on the PCB board 9.

[0089] Figure 8 and Fig. 9 In the figure, the frame body includes a frame body hole 45, which passes through the frame body. The frame body hole 45 can be used to be stored in the device shell and sleeved on the current bus. Generally, the frame body hole 45 is located in the central area of ​​the frame body, and the central area of ​​the frame body is the middle area of ​​the frame body. The aperture size of the frame body hole 45 can be selected according to needs.

[0090] In order to improve the reliability of supporting and positioning the PCB board 9, the support and positioning of the PCB board 9 can be achieved by using the support locking claws. Generally, the support locking claws are evenly distributed in the inner circle of the frame body hole 45, and the number of the support locking claws is not less than the number of the pin connection areas. Figure 8 and Fig. 9 FIG. 4 shows an embodiment in which three supporting locking claws are arranged in the inner circle of the frame body hole 45 . In this case, the supporting locking claws correspond to the pin connection areas one by one.

[0091] Specifically, the support locking claw needs to be fixedly connected to the frame body, and the length of the support locking claw is generally greater than the thickness of the frame body. At this time, the two ends of the support locking claw are respectively located outside the first end face 42 and the second end face 44. The corresponding conditions of the first end face 42 and the second end face 44 can be referred to Figure 7 and Figure 8 As can be seen from the above description, when the PCB board 9 is supported and locked, the PCB board 9 is generally located outside the first end surface 42 of the frame body. At this time, the first end surface 42 is located between the PCB board 9 and the second end surface 44, and the PCB board 9 and the first end surface 42 of the frame body are parallel to each other.

[0092] The supporting locking claw 5 generally adopts the same structural form. Figure 7 , Figure 8 and Fig. 9 , and , all show embodiments of the structural form of the support locking claw. The support locking column includes a support locking plate 35 and a support locking column 34 located at the end of the support locking plate 35. The support locking plate 35 is in the shape of a plate. The plane formed by the support locking plate 35 is perpendicular to the plane where the first end face 42 is located. The support locking column 34 is located above the first end face 42. The support locking column 34 is adapted to the support locking hole on the PCB board 9, that is, the support locking column 34 can be embedded in the support locking hole 26. Generally, the outer diameter of the support locking column 34 is smaller than the width of the support locking plate 35. At this time, the end of the support locking plate 35 is used to form a support contact surface 41, and the support contact surface 41 is the end where the support locking column 34 is located. When the support locking column 34 is embedded in the support locking hole of the PCB board 9, the support contact surface 41 can be used to contact the PCB board 9 to achieve the limit of the PCB board 9, so that the connection between the PCB board 9 and the wire head pin 14 is in the best position.

[0093] Figure 5 and Fig.11 An embodiment of the PCB board 9 is shown in the figure, that is, an embodiment of setting a thread end pin hole 25 and a support locking hole 26 on the PCB board 9 is shown. During assembly, the support locking column 34 is aligned with the support locking hole 26. When the elastic needle head 39 is inserted into and locked in the corresponding thread end pin hole 25 on the PCB board 9, the support locking column 34 can be embedded in the support locking hole 26 on the PCB board 9 at the same time.

[0094] It can be seen from the above description that when the above-mentioned wire end pin 14 is adopted, the connection with the PCB board 9 can be effectively realized. Therefore, the support locking claw of the utility model can omit the form of the locking hook commonly used in the prior art, and only needs to use the support locking column 34 to position the PCB board 9 and use the support contact surface 41 to contact the support. That is, compared with the existing support locking claw, the support locking claw of the utility model can avoid the use of elastic locking hooks, and the material selection range of the insulating frame is wider. Materials with higher hardness and temperature resistance grades can be selected, which reduces the complexity and cost of processing and improves the comprehensive performance of the insulating frame; further improves the efficiency of assembly and disassembly after assembly.

[0095] In the embodiment of the utility model, the support locking claw further includes a housing positioning portion distributed on the second end surface 44 of the frame body, wherein:

[0096] The housing positioning portion includes a second end panel 43 disposed on the second end surface 44 of the frame body and a frame positioning locking block 36 disposed on the second end panel 43;

[0097] The frame positioning locking block 36 matches the frame positioning groove 18 at the bottom end of the device housing. When the frame positioning locking block 36 is aligned and placed in the frame positioning groove, the insulating frame 17 is assembled in the device housing.

[0098] It can be seen from the above description that the insulating skeleton 17 needs to be placed in the device housing. In order to position the insulating skeleton 17 when it is placed in the device housing, in one embodiment of the utility model, a skeleton positioning groove 18 is provided in the device housing, and a housing positioning portion is provided on the support locking claw. The housing positioning portion includes a second end panel 43 and a skeleton positioning locking block 36. The second end panel 43 is L-shaped so as to be compatible with the support positioning plate 35 and the second end face 44 of the skeleton body. The skeleton positioning locking block 36 corresponds to the second end face 43. Fig. 9 As shown, the skeleton positioning locking block 36 needs to match the skeleton positioning groove 18, that is, the skeleton positioning locking block 36 can be placed in the skeleton positioning groove 18. By aligning and positioning the skeleton positioning locking block 36 with the skeleton positioning groove 18, the insulating skeleton 17 can be assembled in the device housing.

[0099] In one embodiment of the present utility model, the device housing comprises a housing body 1 and a housing cover plate 2 for closing the housing body 1, wherein:

[0100] A hollow inner shell ring column 12 is provided in the shell body 1, and the insulating frame 17 and the PCB board 9 are both sleeved on the inner shell ring column 12 to accommodate the insulating frame 17 and the PCB board 9 in the shell body 1;

[0101] The PCB board 9 is electrically connected to the device connector on the shell body 1 so that the PCB board 9 can be led out by using the device connector.

[0102] Figure 1 An embodiment of a device housing is shown in the figure, in which the device housing includes a shell body 1 and a shell cover 2, wherein the shell body 1 is cylindrical, and the shell body 1 has a space for accommodating an insulating frame 17 and a PCB board 9, and the shell cover 2 is adapted to the shell body 1 so as to be able to enclose the insulating frame 17 and the PCB board 9 in the shell cover 2. Of course, during the specific implementation, the PCB board 9, the insulating frame 17, the shell body 1 and the shell cover 2 need to be in a mutually clamped state.

[0103] In order to improve the stability and reliability of the storage of the insulating skeleton 17 and the PCB board 9, an inner shell ring column 12 is arranged in the shell body 1. The inner shell ring column 12 is hollow. At this time, an inner shell ring column hole 11 is formed in the inner shell ring column 12. The inner shell ring column 12 can be used to form a shell hole 3 of the device shell. The shell hole 3 passes through the device shell and is coaxially distributed with the device shell. The entire device shell can be sleeved on the power bus through the shell hole 3 to meet the needs of current measurement. In specific implementation, the insulating skeleton 17 can be sleeved on the inner shell ring column 12 using the skeleton body hole 45; and the PCB board 9 can be sleeved on the inner shell ring column 12 using the PCB board hole 30.

[0104] The first end of the shell body 1 is in a fully open state, and the second end of the shell body 1 has an opening corresponding to the shell hole 3, that is, the second end of the shell body 1 is in a closed state except for the opening corresponding to the shell hole 3, and the shell cover plate 2 is used to cooperate with the first end of the shell body 1. The skeleton positioning groove 18 is located on the inner wall of the second end of the shell body 1. It can be seen from the above description that the cooperation between the skeleton positioning groove 18 and the skeleton positioning locking block 36 can realize the positioning and limiting of the insulating skeleton 17 when it is stored in the shell body 1, and avoid the insulating skeleton 17 from rotating and shifting in the shell body 1. In specific implementation, the skeleton positioning groove 18 and the skeleton positioning locking block 36 can further take anti-reverse connection measures, such as different slot widths, etc. The anti-reverse measures can be selected according to needs, based on the ability to achieve anti-reverse connection measures. At this time, the stability and reliability of assembling the insulating skeleton 17 and the PCB board 9 in the shell body 1 can be further improved.

[0105] When the insulating frame 17 adopts the above structure and is sleeved on the inner ring column 12, the support locking plate 35 is used to contact the outer wall of the inner ring column 12 to achieve locking with the inner ring column 12. Specifically, the outer contact with the inner ring column 12 refers to the contact between the side of the support locking plate 35 and the inner ring column 12. Figure 3 shown.

[0106] In order to output the measured current signal through the PCB board 9, the device connector is electrically connected to the PCB board 9 to lead out the PCB board 9 through the device connector. Thereafter, the device connector is connected to an external circuit to output the measured current signal. The connection and coordination between the device connector, the PCB board 9 and the shell body 1 will be specifically described below.

[0107] In one embodiment of the present invention, a shell support block 5 is provided on the outer wall of the shell body 1, so as to support at least the device connector by the shell support block 5, wherein:

[0108] The device connector includes a plurality of connection lead-out bodies adapted to be connected to the PCB board 9, one end of the connection lead-out body being adapted to be electrically connected to the PCB board 9, and the other end of the connection lead-out body being placed in the connection lead-out groove body 19 on the housing support block 5;

[0109] A connection lead-out body is isolated from other connection lead-out bodies by the connection lead-out slot 19 in which it is located.

[0110] Figure 1 , Figure 2 , Figure 3 and Figure 4 An embodiment of providing a shell support block 5 on the outer wall of the shell body 1 is shown in the figure. In the figure, the shell support block 5 protrudes from the outer wall of the shell body 1, and the shell support block 5 is block-shaped. Of course, the shell support block 5 can also adopt other structural forms.

[0111] The device connector may include a plurality of conductive lead-out bodies, which are independent of each other so as to lead out the PCB board 9 accordingly. The number of the lead-out bodies in the device connector is related to the lead-out state of the PCB board 9. Figure 1 to Figure 4 , an embodiment of a device connector using four connection leads is shown, and a plurality of connection lead slots 19 are provided on the housing support block 5, and the connection lead slots 19 can allow the connection lead bodies to be embedded to achieve positioning of the connection lead bodies and isolation from other connection lead bodies.

[0112] In one embodiment of the present invention, the device connector further comprises a pin seat 16 for connecting all the connection lead-out bodies into one body, wherein:

[0113] The pin seat 16 is located between the two ends of any connecting lead-out body;

[0114] The connecting lead-out body comprises a first lead-out pin 13 for connecting to a PCB board 9 and a second lead-out pin 8 adapted to connect to the first lead-out pin 13, the axis direction of the first lead-out pin 13 is perpendicular to the PCB board 9, and the second lead-out pin 8 is L-shaped after being connected and matched with the first lead-out pin 13;

[0115] Each second lead-out pin 8 is placed in a connection lead-out slot 19 .

[0116] Figure 3 and Figure 4 FIG. 1 shows an embodiment of connecting all the connection lead-out bodies into one body by using a pin seat 16. The pin seat 16 is generally made of insulating material. When all the connection lead-out bodies are connected into one body, the pin seat 16 is located at both ends of the connection lead-out bodies. Figure 3 and Figure 4 In the embodiment, the pin seat 16 is located inside the shell body 1 .

[0117] Figure 3 and Figure 4 An embodiment of a connecting lead-out body is shown in the figure, wherein the connecting lead-out body includes a first lead-out pin 13 and a second lead-out pin 8, and the second lead-out pin 8 and the first lead-out pin 13 are connected and matched to form an L shape. At this time, the end of the second lead-out pin 8 is used to form one end of the connecting lead-out body, and the end of the first lead-out pin 13 is used to form the other end of the connecting lead-out body. In the figure, the pin seat 16 is located on the lead-out connecting rod 8 and is adjacent to the first lead-out pin 13.

[0118] In a specific implementation, when the first pin 13 is connected to the PCB board 9, the end of the first pin 13 is extended from the PCB board connector hole 24 of the PCB board 9, and the axis direction of the first pin 13 is perpendicular to the PCB board 9. Generally, the first pin 13 is welded and fixed to the PCB board 9. The second pin 8 is placed in the corresponding connection lead-out slot 19. Generally, one second pin 8 is placed in one connection lead-out slot 19. Generally, multiple connection lead-out bodies are placed parallel to each other, such as Figure 3 and Figure 4 In the embodiment, the plurality of second pins 8 are parallel to each other and pass through the shell body 1 and the shell support block 5. In addition, the pin seat 16 can correspond to the PCB board 9, and the pin seat 16 is located between the PCB board 9 and the insulating frame 17. Figure 8 In the embodiment, the pin seat 16 is located below the PCB board 9 and will not affect the placement of the PCB board 9 and the insulating frame 17 in the shell body 1.

[0119] In an embodiment of the present utility model, a plurality of supporting connection columns 6 are arranged on the shell supporting block 5 , and the axes of the supporting connection columns 6 are perpendicular to the plane where the shell supporting block 5 is located.

[0120] Figure 1 to Figure 4, an embodiment of providing two supporting connecting columns 6 on the housing supporting block 5 is shown in the figure, in which the two supporting connecting columns 6 are parallel to each other and perpendicular to the plane where the housing supporting block 5 is located, that is, the two supporting connecting columns 6 are parallel to the axis of the second pin 8. The supporting connecting columns 6 can be used to support the entire current sensor at the corresponding regional position, reduce the pressure on the current busbar, and improve the stability and reliability of long-term current detection.

[0121] In one embodiment of the utility model, a spring positioning slot unit is further provided on the housing support block 5, wherein:

[0122] The spring positioning slot unit includes at least one spring positioning slot 7 , which is distributed on the side of the shell support block 5 , and the length direction of the spring positioning slot 7 is consistent with the length direction of the shell support block 5 .

[0123] Figure 1 to Figure 4 An embodiment of setting a spring positioning slot 7 on the side of the shell support block 5 is shown in the figure. In the figure, the spring positioning slot 7 is semicircular. The spring positioning slot 7 can be set on both sides of the shell support block 5. Of course, the spring positioning slot 7 can also be set on only one side of the shell support block 5, that is, the distribution of the spring positioning slot 7 can be selected according to needs. Figure 1 to Figure 4 In the embodiment, the spring positioning slots 7 are distributed along the length of the housing support block 5. The spring positioning slots 7 can be used to quickly install and position the sensor during testing, thereby speeding up the testing process.

[0124] Figure 1 In the device housing, an indicator light 4 is also provided, and the indicator light 4 can be used to indicate the working state of the current sensor, such as indicating the working state or the non-working state. The content of the working state indication by the indicator light 4 can be selected according to needs. Figure 2 An embodiment of forming an indicator light 4 is shown in the figure. In the figure, an indicator light body 10 is set on a PCB board 9. The indicator light body 10 can adopt an existing commonly used light-emitting indication form, such as an LED or the like.

[0125] Of course, when an LED lamp can be set on the PCB board 9 as the indicator light body 10, a cover plate indicating window 28 can be set on the shell cover plate 2, and the cover plate indicating window 28 can be a transparent or fully open window on the shell cover plate 2. The cover plate indicating window 28 can correspond to the indicator light body 10, that is, when the shell cover plate 2 is used to close the shell body 1, the cover plate indicating window 28 on the shell cover plate 2 at least corresponds to the indicator light body 10, and at this time, an indicator light 4 can be formed. Of course, the indicator light 4 can also be implemented in other forms, which is based on the ability to achieve working status indication.

[0126] In one embodiment of the utility model, a clamping guide locking mechanism is also included, wherein:

[0127] The shell cover plate 2 and the shell body 1 are fixed by snapping, and during the snapping and fixing, the snapping guide and locking mechanism is used to guide and lock the snapping of the shell cover plate and the shell body.

[0128] As can be seen from the above description, the shell cover plate 2 and the shell body 1 can be fixed by snapping. In order to improve the reliability of snapping and fixing, and the reliability of receiving the insulating frame 1, a snapping guide locking mechanism is also provided. The snapping guide locking mechanism can improve the reliability of snapping and fixing between the shell cover plate 2 and the shell body 1. The specific situation of the snapping guide locking mechanism is described below in conjunction with the accompanying drawings.

[0129] Figure 2 to Figure 4 In the embodiment, the inner shell guide column 15 is arranged on the inner wall of the shell body 1, wherein the inner shell guide column 15 is protruding from the inner wall of the shell body 1, and the inner shell guide column 15 is distributed along the length direction of the shell body 1, that is, distributed along the direction from the first end to the second end of the shell body 1. When the insulating frame 17 is placed in the shell body 1, the inner shell guide column 15 contacts the outer wall of the insulating frame 17. In addition, Figure 4 The figure also shows an embodiment in which the guide posts 15 in the shell and the positioning grooves 18 of the frame are distributed in a one-to-one correspondence.

[0130] Figure 5 , Figure 6 and Fig.12 An embodiment of a shell cover plate 2 is shown in the figure. In the figure, the shell cover plate 2 is in the form of a circular disk. A cover plate hole 20 is arranged in the central area of ​​the shell cover plate 2. When the shell cover plate 2 is assembled on the first end of the shell body 1 and closes the shell body 1, the cover plate hole 20 corresponds to and is connected with the shell inner ring column hole 11 in the shell inner ring column 12 to form a shell hole 3 of the entire device shell.

[0131] In order to meet the requirements of the snap connection with the shell body 1, a cover plate connecting ring 22 is provided on one side surface of the shell cover plate 2. The cover plate connecting ring 22 is distributed along the edge of the shell cover plate 2, and the outer diameter of the cover plate connecting ring 22 is based on the ability to snap into the shell body 1. A number of cover plate locking blocks 29 are provided on the outer wall of the cover plate connecting ring 22. The cover plate locking blocks 29 are convexly arranged on the cover plate connecting ring 22. When the cover plate connecting ring 22 is snapped into the shell body 1, the cover plate locking blocks 29 cooperate with the shell wall locking grooves on the inner wall of the first end of the shell body 1 to achieve mutual locking between the shell cover plate 2 and the shell body 1. Generally, the number of cover plate locking blocks 29 is not more than the number of shell wall locking grooves. The distribution of the shell wall locking grooves in the shell body 1 is not shown. They are specifically arranged on the inner wall of the shell body 1 and can be matched with the cover plate locking blocks 29.

[0132] In order to avoid the influence of the guide column 15 in the shell on the shell cover 2, a plurality of connecting ring guide positioning grooves 27 are further provided on the cover connecting ring 22. The connecting ring guide positioning grooves 27 are adapted to the guide column 15 in the shell. The guide column 15 in the shell can extend into the connecting ring guide positioning grooves 27, that is, it will not affect the cover connecting ring 22 from entering the shell body 1.

[0133] It can be seen from the above description that since the second pin 8 needs to be led out from the shell body 1, in order to avoid the influence of the second pin 8 on the cover connecting ring 22 being stuck in the shell body 1, a plurality of connecting ring avoidance grooves 23 are also provided on the cover connecting ring 22, and the connecting ring avoidance grooves 23 are adapted to the second pin 8. Therefore, when the cover connecting ring 22 is stuck in the shell body 1, the second pin 8 can be placed in the corresponding connecting ring avoidance grooves 23. Therefore, the number of connecting ring avoidance grooves 23 is not less than the number of the second pin 8, and the position of the connecting ring avoidance grooves 23 on the cover connecting ring 22 is based on the ability to avoid the second pin 8.

[0134] In one embodiment of the present utility model, for any elastic needle head 39 inserted and locked in the pin hole 25 of the wire head, the elastic needle head 39 passes through the PCB board 9;

[0135] A cover plate groove adapted to the PCB board 9 is provided on one side of the shell cover plate 2 corresponding to the PCB board 9, and a PCB board pressing mechanism adapted to the PCB board and a frame pressing mechanism adapted to the insulating frame are provided in the cover plate groove, wherein:

[0136] When the shell cover 2 is clamped on the shell body 1, the PCB board pressing mechanism is used to contact the PCB board 9 to press the PCB board 9 into the shell body;

[0137] At the same time, the frame pressing mechanism is used to contact the insulating frame 17 to press the insulating frame 17 into the shell body 1.

[0138] Figure 2 and Figure 8 FIG. 2 shows an embodiment in which the elastic needle head 9 cooperates with the thread insertion hole 25 and the elastic needle head 39 passes through the thread insertion hole 25 and out of the PCB board 9. In the figure, the first pin 13 and the support locking column 34 also pass through the PCB board 9.

[0139] In order not to affect the fit between the shell cover plate 2 and the shell body 1, a cover plate groove is provided on the inner surface of the shell cover plate 2. Fig.12 In the figure, a cover support outer ring 48 is provided on the outer ring of the inner surface of the shell cover 2, and a cover groove can be formed by using the inner ring of the cover support outer ring 48, and the cover groove is adapted to the PCB board 9, specifically, it allows the PCB board 9 to be embedded. In the figure, the cover connecting ring 22 is provided on the cover support outer ring 48.

[0140] In order to improve the stability of the PCB board 9 and the insulating skeleton 17 in the shell body 1, a PCB board pressing mechanism and a skeleton pressing mechanism are further provided on the inner side of the shell cover 2. During assembly, the shell cover 2 is clamped on the shell body 1, and the PCB board pressing mechanism is used to contact the PCB board 9 to press the PCB board 9 into the shell body; at the same time, the skeleton pressing mechanism is used to contact the insulating skeleton 17 to press the insulating skeleton 17 into the shell body 1.

[0141] Fig.12 An embodiment of a PCB clamping mechanism and a skeleton clamping mechanism is shown in the figure. In the figure, the PCB clamping mechanism includes three contact clamping units, wherein each contact clamping unit can realize surface contact and clamping of the PCB board 9 and the shell cover plate 2. Each contact clamping unit includes a contact clamping strip 51, but the number of contact clamping strips 51 in each contact clamping unit may be different. Fig.12 In the figure, one contact pressing strip 51 is arranged in one contact pressing unit, two contact pressing strips 51 are arranged in one contact pressing unit, and three contact pressing strips 51 are arranged in one contact pressing unit. In the figure, the contact pressing units correspond one to one with the connecting ring guide positioning grooves 27.

[0142] When two or three contact pressing strips 51 are arranged in the same contact pressing unit, the contact pressing strips 51 in the same contact pressing strip unit are parallel to each other, and there is a gap between the contact pressing strips 51. When the shell cover 2 is clamped on the shell body 1, all the contact pressing strips 51 are in contact with the surface of the PCB board 9, and the elastic needle head 39 passing through the PCB board 9 corresponds to the contact pressing unit. The correspondence between the elastic needle head 39 and the contact pressing unit is explained below.

[0143] It can be seen from the above description that three pin connection areas are set on the first end surface 42, four thread end pins 14 are set in one pin connection area, and two thread end pins 14 are set in the other two pin connection areas; in specific implementation, when corresponding to the contact clamping unit, there are four thread end pins 14 in the pin connection area corresponding to the contact clamping unit with three contact clamping strips 51. At this time, the elastic needle head 39 passing through the PCB board 9 is respectively located between the two contact clamping strips 51. Therefore, when the PCB board 9 is clamped, it will not affect the elastic needle head 39 passing through the PCB board 9, that is, the elastic needle head 39 will not be squeezed.

[0144] Similar to the correspondence between the four thread end pins 14 and the contact pressing units, the thread end pins 14 in the other two pin connection areas correspond to the other two contact pressing units one by one, and the elastic needle head 39 of the thread end pin 14 in one pin connection area is located between the two contact pressing strips 51, while the elastic needle head 39 of the thread end pin 14 in the other pin connection area is located on one side of a contact pressing strip 51. When the above method is used to correspond to the contact pressing units, it can be ensured that the elastic needle head 39 passing through the PCB board 9 will not be affected.

[0145] Fig.12 In the figure, the skeleton clamping mechanism includes three support locking column clamping blocks 50, and the support locking column clamping blocks 50 are in contact with the outer edge of the cover support inner ring 49 on the cover body 21. The cover support inner ring 49 corresponds to the cover hole 20, and the cover hole 20 passes through the cover support inner ring 49. The cover support inner ring 49 is located in the inner circle of the cover support outer ring 48, and the PCB board clamping mechanism is located between the cover support outer ring 48 and the cover support inner ring 49.

[0146] When the shell cover 2 is snapped onto the shell body 1, the cover support inner ring 49 is connected to the shell inner column ring 12, and the support locking column clamping block 50 corresponds to the support locking column 34 one by one. Since the support locking column 34 passes through the PCB board 9, the support locking column clamping block 50 can contact the end of the support locking column 34 passing through the PCB board 9, thereby achieving contact with the insulating frame 17 and pressing the insulating frame 17 into the shell body 1.

[0147] It can be seen from the above description that the distribution of the support and locking column pressing blocks 50 on the shell cover plate 2 is based on a one-to-one correspondence with the support and locking columns 34. Fig.12 In the embodiment, the support locking column pressing block 50 corresponds to the three contact pressing units. In the embodiment, the PCB board pressing mechanism and the frame pressing mechanism can also adopt other implementation forms, which can meet the contact pressing of the PCB board 9 and the contact pressing of the insulating frame 17.

[0148] In addition, it can be seen from the above description that an indicator light body 10 is set on the PCB board 9, and a cover indication window 28 is set on the shell cover 28. In order to improve the indication effect, a cover light guide 47 can be set in the cover groove of the shell cover 2. The cover light guide 47 is used to cooperate with the indicator light body 10 and the cover indication window 28 to improve the indication effect of the indicator light 4.

Claims

1. A current sensor structure with high assembly efficiency, characterized in that: The current sensor structure comprises: A device housing, used to accommodate an insulating frame and a PCB board corresponding to the insulating frame; The insulating skeleton comprises a skeleton body, wherein the skeleton body comprises a first end face directly corresponding to the PCB board and a second end face directly corresponding to the first end face, wherein: A plurality of pin connection areas are arranged on the first end surface of the frame body, and a plurality of wire end pins for electrical connection with the PCB board are arranged in each pin connection area; Any thread insertion needle includes a needle body and an elastic needle head that can be elastically retracted, wherein: The elastic needle head is arranged on the needle body, and the elastic expansion and contraction direction of the elastic needle head is perpendicular to the length direction of the thread insertion needle; The thread end pin is vertically assembled in the pin connection area through the pin body. By utilizing the elastic expansion and contraction of the elastic needle head, the elastic needle head is plugged and locked into the corresponding wire head pin hole on the PCB board.

2. The current sensor structure with high assembly efficiency according to claim 1, characterized in that: The needle body is in the shape of a flat plate, the elastic needle head is located at the end of the needle body, and the length direction of the elastic needle head is consistent with the length direction of the needle body; A needle hole penetrating the elastic needle head is arranged in the elastic needle head, and the shape of the elastic needle head includes a rhombus.

3. The current sensor structure with high assembly efficiency according to claim 1 or 2, characterized in that: The needle body is provided with at least one needle body hole and at least one threading hole, wherein: The needle body hole and the threading hole both pass through the needle body; The threading hole is located on the needle body and adjacent to the elastic needle head.

4. The current sensor structure with high assembly efficiency according to claim 1 is characterized in that: The central area of ​​the frame body is provided with frame body holes, wherein the frame body holes are distributed in the central area of ​​the frame body and penetrate the frame body; A plurality of evenly distributed supporting and locking claws are arranged in the frame body hole, wherein the number of the supporting and locking claws is not less than the number of the pin connection areas; The support locking claw comprises a support locking plate fixedly connected to the inner wall of the frame body hole and a support locking column arranged at the end of the support locking plate, and the support locking column is located above the first end surface of the frame body; The corresponding axial directions of the support locking plate and the support locking column are parallel to the length direction of the thread pin. When the elastic needle head is inserted and locked in the corresponding thread pin hole on the PCB board, the support locking column is simultaneously embedded in the support locking hole on the PCB board.

5. The current sensor structure with high assembly efficiency according to claim 4, characterized in that: The supporting locking claw further comprises a housing positioning portion distributed on the second end surface of the frame body, wherein: The housing positioning portion comprises a second end panel disposed on the second end surface of the frame body and a frame positioning locking block disposed on the second end panel; The frame positioning locking block matches the frame positioning groove at the bottom end of the device housing. When the frame positioning locking block is aligned and placed in the frame positioning groove, the insulating frame can be assembled in the device housing.

6. The current sensor structure with high assembly efficiency according to any one of claims 1 to 5, characterized in that: The device housing comprises a housing body and a housing cover plate for closing the housing body, wherein: A hollow inner shell ring column is arranged in the shell body, and the insulating frame and the PCB board are both sleeved on the inner shell ring column to accommodate the insulating frame and the PCB board in the shell body; The PCB board is adapted to be electrically connected to the device connector on the shell body, so that the PCB board can be led out by using the device connector.

7. The current sensor structure with high assembly efficiency according to claim 6, characterized in that: A shell support block is arranged on the outer wall of the shell body, so as to support at least the device connector by the shell support block, wherein: The device connector includes a plurality of connection lead-out bodies adapted to be connected with the PCB board, one end of the connection lead-out body is adapted to be electrically connected with the PCB board, and the other end of the connection lead-out body is placed in a connection lead-out slot on the housing support block; A connection lead-out body is isolated from other connection lead-out bodies by utilizing the connection lead-out slot in which it is located.

8. The current sensor structure with high assembly efficiency according to claim 7, characterized in that: The device connector also includes a pin seat for connecting all the connection leads into one body, wherein: The pin holder is located between the two ends of any connection lead-out body; The connecting lead-out body comprises a first lead-out pin for connecting to a PCB board and a second lead-out pin adapted to connect to the first lead-out pin, the axis direction of the first lead-out pin is perpendicular to the PCB board, and the second lead-out pin is L-shaped after being connected and matched with the first lead-out pin; Each second lead-out pin is placed in a connection lead-out slot.

9. The current sensor structure with high assembly efficiency according to claim 6, characterized in that: For any elastic needle head that is plugged and locked into the pin hole of the wire head, the elastic needle head passes through the PCB board; A cover plate groove adapted to the PCB board is arranged on one side of the shell cover plate and the PCB board, and a PCB board pressing mechanism adapted to the PCB board and a frame pressing mechanism adapted to the insulating frame are arranged in the cover plate groove, wherein: When the shell cover is clamped on the shell body, the PCB board pressing mechanism is used to contact the PCB board to press the PCB board into the shell body; At the same time, the frame pressing mechanism is used to contact the insulating frame to press the insulating frame into the shell body.

10. The current sensor structure with high assembly efficiency according to claim 7, characterized in that: A plurality of supporting connection columns are arranged on the shell supporting block, and the axes of the supporting connection columns are perpendicular to the plane where the shell supporting block is located.

11. The current sensor structure with high assembly efficiency according to claim 7, characterized in that: A spring positioning slot unit is also provided on the housing support block, wherein: The spring positioning slot unit includes at least one spring positioning slot, and the spring positioning slot is distributed on the side of the shell support block, and the length direction of the spring positioning slot is consistent with the length direction of the shell support block.

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