A device for detecting the performance of a magnetic core

Abstract

The present invention relates to a magnetic core performance detection device, belonging to the technical field of magnetic core detection, and solves the problems of low detection efficiency and poor accuracy in the prior art for detecting the performance of magnetic cores. The present invention includes a workbench, a connection interface, a propulsion body, a fixing body, a feeding component, and a positioning slider; the positioning slider is used to fix the magnetic core to be detected; the propulsion body and the fixing body are respectively arranged on both sides of the positioning slider, the propulsion body includes a propulsion rod, and the end of the propulsion rod can pass through the middle of the magnetic core and abut against the end of the fixing body; the feeding component can drive the propulsion rod to reciprocate in a direction towards or away from the fixing body; there are at least two connection interfaces, wherein the first interface is electrically connected to the propulsion rod, and the second interface is electrically connected to the fixing body. By accurately positioning the relative position of the magnetic core and the propulsion rod, the present invention can keep the propulsion rod passing through the magnetic core always at the central position of the magnetic core, thereby improving the detection accuracy and efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic core detection, and particularly to a device for detecting the performance of a magnetic core. Background Art

[0002] As a core component of a transformer coil, the accuracy and consistency of the performance indicators of a magnetic core have an important impact on the conversion efficiency, power factor, and line loss of transformer products. Therefore, during the production and use of magnetic cores, it is necessary to detect their inductance performance multiple times. In traditional detection processes, a metal conductor is usually passed through the magnetic core and both ends are clamped with clips to form a closed loop with a tester for detection. Since the entire process is carried out manually, the test time is relatively long. At the same time, the uncertainty of the relative position between the magnetic core and the metal conductor will also cause certain deviations in the test values. In addition, the connection between the traditional detection device and the tester is unstable, and the reliability of signal transmission is poor, further affecting the accuracy of the test. Summary of the Invention

[0003] In view of the above analysis, the present invention provides a device for detecting the performance of a magnetic core to solve the problems of low detection efficiency and poor accuracy in detecting the performance of magnetic cores in the prior art.

[0004] A device for detecting the performance of a magnetic core according to the present invention includes a workbench, and a connection interface, a propulsion body, a fixing body, a feeding component, and a positioning slider fixedly arranged on the workbench; the positioning slider is movably arranged in the middle of the upper surface of the workbench and is used for fixing the magnetic core to be detected; the propulsion body and the fixing body are respectively arranged on both sides of the positioning slider. The propulsion body includes a propulsion rod, and the end of the propulsion rod facing the fixing body can pass through the middle of the magnetic core and abut against the end of the fixing body facing the propulsion body; the feeding component is arranged on the side of the propulsion body away from the positioning slider and can drive the propulsion rod to reciprocate in a direction towards or away from the fixing body; the connection interface includes at least a first interface and a second interface, wherein the first interface is electrically connected to the propulsion rod, and the second interface is electrically connected to the fixing body.

[0005] Further, the connection interface includes a connection housing.

[0006] Further, a plurality of locking chutes are evenly distributed in a circumferential manner on the outer surface of the connection housing, and the locking chutes are used for locking and fixedly connecting with the ports of a transformer tester.

[0007] Further, the connection interface further includes connection pins and a first insulator.

[0008] Further, the connection pins are installed in the first insulator, and the first insulator is arranged inside the connection housing.

[0009] Furthermore, the propulsion body further includes a propulsion housing, a propulsion adapter, and a propulsion insulator.

[0010] Furthermore, the propulsion housing is fixedly arranged on the workbench, the propulsion insulator is fixedly arranged inside the propulsion housing, the propulsion adapter is reciprocally movably arranged inside the propulsion insulator, and one end of the propulsion adapter is electrically connected to the propulsion rod.

[0011] Furthermore, the propulsion body further includes a propulsion elastic connecting tube and a propulsion pin.

[0012] Furthermore, the middle part of the propulsion adapter is electrically connected to one end of the propulsion elastic connecting tube, and the other end of the propulsion elastic connecting tube is electrically connected to the propulsion pin.

[0013] Furthermore, the propulsion body further includes a propulsion insulator. One end of the propulsion insulator is fixedly connected to the end of the propulsion adapter away from the propulsion rod, and the other end of the propulsion insulator is fixedly connected to the feeding component.

[0014] Furthermore, the feeding component includes a push rod, a push handle, a spring, and a feeding seat.

[0015] Furthermore, the feeding seat is fixedly arranged on the workbench, one end of the push handle is fixedly arranged on the workbench, one end of the push rod passes through a first push rod through hole on the feeding seat, the other end of the push rod passes through a second push rod through hole on the push handle, the spring is sleeved on the push rod, the push handle can drive the push rod to move in a direction away from the fixed body, and the spring can push the push rod to move in a direction close to the fixed body.

[0016] Furthermore, the fixed body includes a fixed rod, a fixed housing, a fixed adapter, a fixed insulator, a fixed insulator, a fixed elastic connecting tube, and a fixed pin.

[0017] Furthermore, the fixed housing is fixedly arranged on the workbench, the fixed insulator is arranged inside the fixed housing, and the fixed adapter is arranged inside the fixed insulator; one end of the fixed adapter is electrically connected to the fixed rod, the middle part of the fixed adapter is electrically connected to the fixed elastic connecting tube and the fixed pin, and the fixed insulator is arranged between the fixed elastic connecting tube and the fixed housing.

[0018] Compared with the prior art, the present invention can at least achieve one of the following beneficial effects:

[0019] (1) The present invention accurately locates the position of the magnetic core through a positioning slider. By setting a propulsion body and enabling the propulsion rod to reciprocate along a fixed path, it can ensure that the propulsion rod passing through the magnetic core always remains at the central position of the magnetic core, breaking through the limitation of the relatively large test error of traditional magnetic core inductors and achieving the elimination of the measurement device's own error.

[0020] (2) The present invention adopts an interface locking chute structure, ensuring a stable connection with the interface of the transformer tester and simultaneously improving the high reliability of signal transmission.

[0021] (3) In the present invention, the front ends of the propulsion pin and the fixed pin are respectively matched and connected with a propulsion elastic connecting tube and a fixed elastic connecting tube. Through the large elastic deformation amount of the elastic connecting tube, the contact is more firm, the contact resistance is smaller, and it also has good shock resistance, ensuring that the high-frequency reciprocating motion of the propulsion body will not affect the measurement accuracy.

[0022] (4) The feeding component of the present invention adopts a spring propulsion structure, making the operation simpler and more efficient.

[0023] In the present invention, the above technical solutions can also be combined with each other to achieve more preferred combination schemes. Other features and advantages of the present invention will be described in the subsequent specification, and some advantages can be made obvious from the specification or understood by implementing the present invention. The objectives and other advantages of the present invention can be realized and obtained through the content specifically pointed out in the specification and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings are only for the purpose of showing specific embodiments and are not considered as limitations on the present invention. Throughout the drawings, the same reference signs represent the same components.

[0025] Figure 1 is a schematic structural diagram of Embodiment 1 of the magnetic core performance detection device of the present invention;

[0026] Figure 2 is an exploded view of the structure of the connection interface of the present invention;

[0027] Figure 3 is an exploded view of the structure of the propulsion body of the present invention;

[0028] Figure 4 is an exploded view of the structure of the fixed body of the present invention;

[0029] Figure 5 is an exploded view of the structure of the feeding component of the present invention;

[0030] Figure 6 is a schematic structural diagram of the positioning slider of the present invention;

[0031] Figure 7It is a schematic structural diagram of the workbench of Embodiment 1 of the present invention;

[0032] Figure 8a 、 8b It is a schematic structural diagram of the connecting housing of the present invention, where 8a is the front view and 8b is the sectional view;

[0033] Figure 9 It is a schematic structural diagram of the connecting tail cover of the present invention;

[0034] Figure 10 It is a schematic sectional view of the propulsion housing of the present invention;

[0035] Figure 11 It is a schematic sectional view of the propulsion adapter of the present invention;

[0036] Figure 12 It is a schematic sectional view of the propulsion insulator of the present invention;

[0037] Figure 13 It is a schematic sectional view of the propulsion insulating spacer of the present invention;

[0038] Figure 14 It is a schematic sectional view of the fixed housing of the present invention;

[0039] Figure 15 It is a schematic sectional view of the fixed adapter of the present invention;

[0040] Figure 16 It is a schematic sectional view of the fixed insulator of the present invention;

[0041] Figure 17 It is a schematic sectional view of the propulsion pin / fixed pin of the present invention;

[0042] Figure 18 It is a schematic sectional view of the propulsion elastic connecting tube / fixed elastic connecting tube of the present invention;

[0043] Figure 19 It is a schematic structural diagram of Embodiment 2 of the magnetic core performance detection device of the present invention;

[0044] Figure 20 It is a schematic structural diagram of the workbench of Embodiment 2 of the present invention;

[0045] Figure 21 It is a schematic structural diagram of the protective cover of Embodiment 2 of the present invention;

[0046] Figure 22 It is a schematic structural diagram of the positioning slider of Embodiment 2 of the present invention;

[0047] Figure 23 It is a schematic structural diagram of the positioning block of Embodiment 2 of the present invention.

[0048] Reference Signs:

[0049] 1-connection interface; 11-connection housing; 111-locking slide groove; 112-knurling; 113-circlip groove; 12-circlip; 13-connection pin; 14-first insulator; 15-first elastic connection tube; 16-connection tail cover; 161-circlip shoulder; 162-fixing thread; 2-propelling body; 21-propelling rod; 211-propelling rod front section; 22-propelling housing; 221-first fixing hole; 222-second long groove; 223-first inner cavity; 224-outer peripheral plane of the propulsion housing; 225-transition section; 226-propelling front end; 23-propelling adapter; 231-propelling rod connection cavity; 232-insulator connection cavity; 233-middle cavity; 234-first step; 235-second step ;236-push elastic connecting tube connection cavity;237-outer peripheral surface;24-push insulator;241-first cavity;242-second cavity;243-step;244-third long groove;245-outer surface;25-push insulator;251-front section of insulator;252-rear section of insulator;253-push rod connection cavity;26-push elastic connecting tube;261-first slot;27-push pin;271-first wire connection cavity;272-rear section of push pin;273-push pin shoulder;274-front section of push pin;275-push pin end;3-fixed body;31-fixed rod;311-baffle;32-fixed shell;321-second fixed hole;322-first through hole ;323-second inner cavity;324-installation section;325-connection section;326-fixed front end;33-fixed adapter;331-fixed adapter outer interface;332-fourth inner cavity;333-third through hole;34-fixed insulator;341-fixed insulator outer interface;342-third inner cavity;343-second through hole;35-fixed insulator;36-fixed elastic connecting tube;37-fixed plug pin;371-second wire connection cavity;372-fixed plug pin rear section;373-fixed plug pin shoulder;374-fixed plug pin front section;375-fixed plug pin end;4-feeding component;41-push rod;411-limiting ring;412-push rod front section;413-push rod rear section;42-push handle; 421-bending part; 422-second push rod through hole; 423-push handle mounting hole; 43-spring; 44-feed seat; 441-first push rod through hole; 442-feed seat mounting hole; 5-positioning slider; 51-core placement groove; 52-slide groove; 53-positioning card slot; 6-workbench; 61-first hole; 62-second hole; 63-first long groove; 64-third hole; 65-fourth hole; 66-fifth hole; 67-sixth hole; 68-seventh hole; 69-slide rail; 610-block slide groove; 611-protective cover positioning groove; 7-protective cover; 71-top cover; 711-locking plate; 72-first side wall; 73-second side wall; 74-hinge; 8-positioning card block; 81-sliding end; 82-clamping end. DETAILED DESCRIPTION

[0050] The preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings, in which the drawings form a part of the present invention and are used together with the embodiments of the present invention to explain the principles of the present invention, rather than to limit the scope of the present invention.

[0051] Embodiment 1

[0052] The magnetic core performance detection device in the present invention refers to a detection device for the inductance performance of a magnetic core based on a transformer tester. The described examples are only a part of the embodiments of the present invention, rather than all embodiments. The present invention can be explained in detail through the following examples, and the purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0053] As Figure 1 shown, the magnetic core performance detection device includes a workbench 6, and a connection interface 1, a propulsion body 2, a fixing body 3, a feeding component 4, and a positioning slider 5 fixed on the workbench 6. Among them, four connection interfaces 1 are provided. Two of the first interfaces are electrically connected to the propulsion body 2, and the other two second interfaces are electrically connected to the fixing body 3. At the same time, the other end of the first interface is connected to the positive pole of the transformer tester, and the other end of the second interface is connected to the negative pole of the transformer tester. The magnetic core to be detected is arranged in the magnetic core placement groove 51 on the positioning slider 5 located between the propulsion body 2 and the fixing body 3. The front section 211 of the propulsion rod 21 of the propulsion body 2 passes through the center of the magnetic core and contacts the baffle 311 of the fixing rod 31 to form a closed loop, and the magnetic core performance test can be carried out through the transformer tester. The feeding component 4 is used to drive the propulsion rod 21 in the propulsion body 2 to move back and forth to facilitate the loading and unloading of the magnetic core. The positioning slider 5 is used to fix the magnetic core.

[0054] The structure of the workbench 6 is as Figure 7 shown. The workbench 6 is a rectangular box-shaped structure. The inside of the box is used to accommodate wires, and the outer surface of the box is used to set the connection interface 1, the propulsion body 2, the fixing body 3, the feeding component 4, and the positioning slider 5. Among them, the connection interface 1 is set on the side of the workbench 6, and the propulsion body 2, the fixing body 3, the feeding component 4, and the positioning slider 5 are set on the top surface of the workbench 6.

[0055] Specifically, two first holes 61 and two second holes 62 are opened on the side of the workbench 6. The first holes 61 and the second holes 62 are of the same size, and a connection interface 1 is fixedly arranged in each hole. In the middle of the top surface of the workbench 6, there is a slide rail 69 extending along the width direction, which is used to cooperate with the positioning slider 5 to slide for the placement of the magnetic core and the alignment of the center.

[0056] On the top surface of the workbench 6, there are also two third holes 64 for fixing the propulsion housing 22 of the propulsion body 2. A first long slot 63 is provided between the two third holes 64. The propulsion elastic connecting pipe 26 passes through the first long slot 63 and is connected to the propulsion adapter 23 of the propulsion body 2, and the propulsion elastic connecting pipe 26 can drive the propulsion adapter 23 to reciprocate along the first long slot 63. Outside the third hole 64, there are also two sixth holes 67 for fixing the feed seat 44 of the feed component 4. A seventh hole 68 is provided beside the third hole 64 and the sixth hole 67 for fixing the push handle 42 of the feed component 4.

[0057] On the top of the workbench 6, there are also two fifth holes 66 for fixing the fixing housing 32 of the fixing body 3. A fourth hole 65 is provided between the two fifth holes 66. The fixing elastic connecting pipe 36 passes through the fourth hole 65 and is connected to the fixing adapter 33 of the fixing body 3.

[0058] The connecting pin 13 of the connection interface 1 fixed in the first hole 61 is connected to the propulsion pin 27 of the propulsion body 2 through a wire, and the end of the other end of the propulsion pin 27 is inserted into the propulsion elastic connecting pipe 26. The connecting pin 13 of the connection interface 1 fixed in the second hole 62 is connected to the fixing pin 37 of the fixing body 3 through a wire, and the end of the other end of the fixing pin 37 is inserted into the fixing elastic connecting pipe 36.

[0059] The connection interface 1, the propulsion body 2, the fixing body 3, the feed component 4, and the positioning slider 5 are positionally connected through the workbench 6, and the accuracy and reliability of signal transmission are achieved through the internal wires.

[0060] As Figure 2 shown, the connection interface 1 includes a connection housing 11, a snap ring 12, a connecting pin 13, a first insulator 14, a first elastic connecting pipe 15, and a connection tail cover 16 arranged axially in sequence.

[0061] The structure of the connection housing 11 is as Figure 8a , 8b shown. On the circumferential direction of the outer surface of the connection housing 11, there are four locking chutes 111, which are locked and fixedly connected to the port of the transformer tester through the locking chutes 111. At the same time, the connection housing 11 is provided with knurling 112 for easy rotation. Inside the connection housing 11, there is a snap ring groove 113, and the snap ring 12 is accommodated in the snap ring groove 113 to connect the connection housing 11 and the connection tail cover 16. The transformer tester involved in the present invention is a general device with a standard port, and no further description will be given here.

[0062] The structure of the connection tail cover 16 is as Figure 9As shown in the figure, the outer peripheral surface of the connecting tail cover 16 is provided with a snap ring shoulder 161 and a fixing thread 162. The snap ring shoulder 161 cooperates with the snap ring 12, so that one end of the connecting tail cover 16 is fixed within the connecting housing 11. The fixing thread 162 can be fixedly fitted with the internal threads of the first hole 61 and the second hole 62 on the workbench 6.

[0063] The connecting pin 13 is installed inside the first insulator 14. The first insulator 14 is arranged inside the first elastic connecting tube 15. The connecting pin 13 and the first elastic connecting tube 15 are insulated through the first insulator 14. The first elastic connecting tube 15 is fixed inside the connecting tail cover 16. The connecting housing 11 is connected to the connecting tail cover 16 through the snap ring 12. One end of the connecting pin 13 facing the inside of the workbench 6 is connected to the transmission wire, and the other end of the connecting pin 13 is connected to the transformer tester, realizing the signal transmission between the detection device and the transformer tester.

[0064] The structure of the pusher body 2 is as Figure 3 shown. The pusher body 2 includes a push rod 21, a push housing 22, a push adapter 23, a push insulator 24, a push insulator 25, a push elastic connecting tube 26, and a push pin 27. The push housing 22 is fixed on the workbench 6. The push insulator 24 is fixedly arranged inside the push housing 22. The push adapter 23 is slidably arranged inside the push insulator 24. One end of the push adapter 23 is fixedly connected to the push rod 21, and the other end is fixedly connected to the push insulator 25. One end of the push elastic connecting tube 26 passes through the long slots on the push housing 22 and the push insulator 24 and is fixedly connected to the middle of the push adapter 23. The other end of the push elastic connecting tube 26 is fixedly connected to the push pin 27. The tail of the push pin 27 is crimped with the wire through a crimping hole, with firm connection and stable signal transmission at the same time. This wire is connected to the connecting pin 13 fixed in the first hole 61 on the workbench 6 to realize signal transmission.

[0065] Through this connection method, the push insulator 25 can drive the push adapter 23, the push rod 21, the push elastic connecting tube 26, and the push pin 27 to reciprocate relative to the push housing 22 and the push insulator 24.

[0066] See Figure 3 and Figure 10, the propulsion housing 22 is cylindrical, with a first inner cavity 223 running through both ends inside. The first inner cavity 223 can be in transitional fit with the outer surface 245 of the propulsion insulator 24. The axis of the propulsion housing 22 extends in the horizontal direction. On the outer peripheral surface of the propulsion housing 22, there is a plane 224 at the top and bottom respectively, which can ensure a tight fit between the propulsion housing 22 and the workbench 6. One end of the propulsion housing 22 facing the middle of the workbench 6 is the propulsion front end 226. A transition section 225 is provided between the main body part of the propulsion housing 22 with a plane 224 at the propulsion front end 226. On the plane 224 at the bottom, there are two first fixing holes 221. The propulsion housing 22 is fixed to the workbench 6 by mating these two first fixing holes 221 with two third holes 64 of the workbench 6 and using fasteners such as screws or pins.

[0067] Between the two first fixing holes 221, there is a second long slot 222. The second long slot 222 communicates with the first inner cavity 223, and the shape, size and position of the second long slot 222 are the same as those of the first long slot 63 of the workbench 6.

[0068] See Figure 3 and Figure 12 , the propulsion insulator 24 is circular tubular, including an outer surface 245 and an inner cavity. Its outer surface 245 is joined to the first inner cavity 223 of the propulsion housing 22; its inner cavity is divided into two sections with unequal diameters, namely a first cavity 241 and a second cavity 242, where the diameter of the first cavity 241 is smaller than that of the second cavity 242. The first cavity 241 is used to accommodate the propulsion rod 21, and the second cavity 242 is used to accommodate the propulsion adapter 23. There is a step 243 at the connection between the first cavity 241 and the second cavity 242. The step 243 can axially limit the propulsion adapter 23. After the propulsion rod 21 and the propulsion adapter 23 are fixed, they penetrate into the first cavity 241 of the propulsion insulator 24 and extend out. The propulsion rod 21 has a clearance fit with the first cavity 241 to facilitate the axial movement of the propulsion rod 21; the second cavity 242 has a clearance fit with the outer peripheral surface 237 of the propulsion adapter 23 to facilitate the axial movement of the propulsion adapter 23.

[0069] The propulsion insulator 24 is also provided with a third long slot 244. The third long slot 244 runs through the second cavity 242, and at the same time, the shape, size and position of the third long slot 244 are the same as those of the second long slot 222 and the first long slot 63. The propulsion elastic connecting tube 26 connected to the propulsion adapter 23 and the propulsion pin 27 connected to the propulsion elastic connecting tube 26 can reciprocate axially along the axes of the first long slot 63, the second long slot 222 and the third long slot 244.

[0070] See Figure 3 and Figure 11, the advancing adapter 23 is tubular, including an outer peripheral surface 237 and an internally through hole extending axially. The internally through hole is divided into three sections, namely the advancing rod connection cavity 231 and the insulator connection cavity 232 at both ends, and the intermediate cavity 233 in the middle. Among them, the diameter of the intermediate cavity 233 is smaller than that of the advancing rod connection cavity 231 and also smaller than that of the insulator connection cavity 232. At the connection between the intermediate cavity 233 and the advancing rod connection cavity 231, there is a first step 234, and at the connection between the intermediate cavity 233 and the insulator connection cavity 232, there is a second step 235. In the middle of the advancing adapter 23, there is also a radially extending advancing elastic connection tube connection cavity 236, which communicates with the intermediate cavity 233. The advancing rod connection cavity 231 is fixedly connected to the rear section of the advancing rod 21, the insulator connection cavity 232 is fixedly connected to the front section 251 of the insulator of the advancing insulator 25, and the advancing elastic connection tube connection cavity 236 is connected to the advancing elastic connection tube 26. The advancing rod 21, the advancing elastic connection tube 26 and the advancing adapter 23 are metal parts, and effective signal transmission is achieved through fixed connection.

[0071] See Figure 3 and Figure 13 , the advancing insulator 25 includes a front section 251 of the insulator and a rear section 252 of the insulator. At the end of the rear section 252 of the insulator, there is a recessed push rod connection cavity 253 inward. Among them, the front section 251 of the insulator can extend into the insulator connection cavity 232 of the advancing adapter 23, the rear section 252 of the insulator is located in the second cavity 242 of the advancing insulator 24 and is in clearance fit with the second cavity 242, and the front section 412 of the push rod is inserted into the push rod connection cavity 253 and fixedly connected to the advancing insulator 25.

[0072] The structure of the feeding component 4 is as Figure 5 shown, including a push rod 41, a push handle 42, a spring 43, and a feeding seat 44. See Figure 1 and Figure 5 , the feeding seat 44 is fixedly arranged on one side edge of the workbench 6, one end of the push handle 42 is fixed on the workbench 6 and is located between the advancing body 2 and the feeding seat 44. The rear section 413 of the push rod 41 of the push rod passes through the first push rod through hole 441 on the feeding seat 44, and after the front section 412 of the push rod 41 of the push rod passes through the second push rod through hole 422 on the push handle 42, it is inserted into the push rod connection cavity 253 on the advancing insulator 25 and fixedly connected to the advancing insulator 25. The spring 43 is sleeved on the push rod 41 and is located between the limiting ring 411 in the middle of the push rod 41 and the feeding seat 44. The elastic force of the spring 43 keeps the push rod 41 in contact with the push handle 42.

[0073] Specifically, the push rod 41 includes a push rod front section 412, a push rod rear section 413, and a stop ring 411 disposed between the push rod front section 412 and the push rod rear section 413. The stop ring 411 has a diameter greater than that of the push rod front section 412 and the push rod rear section 413, and is used for the spring 43 to abut against so as to provide thrust to the push rod 41.

[0074] The push handle 42 includes a horizontal mounting portion and an elastic support portion. The horizontal mounting portion is arranged at one end of the elastic support portion, and a push handle mounting hole 423 is arranged thereon, and the push handle 42 is fixedly connected to the seventh hole 68 on the workbench 6 through the push handle mounting hole 423. The elastic support portion is an elastic spring extending in the vertical direction, and a bending portion 421 is arranged in the middle of the elastic spring, and a second push rod through hole 422 is arranged in the middle of the bending portion 421, and the push rod front section 412 of the push rod 41 passes through the second push rod through hole 422. The second push rod through hole 422 is a rectangular hole, and its height is greater than the diameter of the push rod front section 412 and smaller than the size of the limit ring 411, so that the limit ring 411 can limit the push rod 41. The length of the second push rod through hole 422 is 2-3 times the height, so that the push rod front section 412 can move freely therein when the push handle 42 is driven to avoid friction or interference. The free end of the push handle 42 is moved toward the feed seat 44 , and the push handle 42 can drive the push rod 41 to retreat under the action of the limit ring 411 . When the push handle 42 is released, the elastic force of the spring 43 can push the push rod 41 to move toward the propulsion body 2 .

[0075] The bending portion 421 can be a bent plane or a curved surface. By providing the bending portion 421, it can be ensured that the spring 43 is also completely pressed against the surface of the push handle 42 during the driving process of the push handle 42, so as to avoid the tilt of the force direction causing the movement direction of the push rod 21 to tilt.

[0076] The push handle 42 is preferably made of stainless steel. In order to ensure that it has appropriate elasticity and rigidity, the thickness of the push handle 42 is in the range of 0.8-1.2 mm, preferably 1 mm. Within this thickness range, the push handle 42 can be easily deformed to push the push rod 41, and the limit ring 411 can also stably limit the push rod 41.

[0077] The feed seat 44 includes a horizontally arranged mounting portion and a vertically arranged supporting portion, the mounting portion is provided with a feed seat mounting hole 442, and the feed seat 44 is fixedly connected to the sixth hole 67 on the workbench 6 through the feed seat mounting hole 442. A first push rod through hole 441 is provided on the supporting portion for supporting the push rod 41.

[0078] Pushing the push handle 42 towards the spring 43 can drive the push rod 41, the propulsion insulator 25, the propulsion adapter 23, and the propulsion rod 21 to move synchronously, separating the front section 211 of the propulsion rod from the baffle 311 of the fixed rod 31. At this time, the magnetic core can be placed on the positioning slider 5. Releasing the push handle 42 allows the front section 211 of the propulsion rod to pass through the center of the magnetic core and contact the baffle 311 of the fixed rod 31 to form a closed circuit.

[0079] The structure of the fixed body 3 in the magnetic core performance detection device of the present invention is as Figure 4 shown, including a fixed rod 31, a fixed housing 32, a fixed adapter 33, a fixed insulator 34, a fixed insulator 35, a fixed elastic connecting tube 36, and a fixed pin 37. Among them, the fixed housing 32 is fixedly arranged on the side of the workbench 6 opposite to the propulsion body 2. The fixed insulator 34 is arranged inside the fixed housing 32 to insulate its internal components from the fixed housing 32. The fixed adapter 33 is arranged inside the fixed insulator 34. One end of the fixed rod 31 is axially inserted into the fixed adapter 33. One end of the fixed elastic connecting tube 36 radially passes through the fixed housing 32, the fixed insulator 34, and is fixedly connected to the middle of the fixed adapter 33. The fixed elastic connecting tube 36 is sleeved with the fixed insulator 35, and its insulation from the fixed housing 32 is achieved through the fixed insulator 35. The other end of the fixed elastic connecting tube 36 is fixedly connected to one end of the fixed pin 37. A wire is crimped to the other end of the fixed pin 37, and this wire is connected to the connection pin 13 fixed in the second hole 62 on the workbench 6 to achieve signal transmission.

[0080] Specifically, the fixed rod 31 includes a slender rod portion and a baffle 311 provided at one end of the rod portion, and this baffle 311 can abut against the front section 211 of the propulsion rod. Preferably, in the present invention, both the propulsion rod 21 and the fixed rod 31 are treated with nickel-gold plating, which improves the wear resistance of the propulsion rod 21 and the fixed rod 31, extends the service life of the equipment, and at the same time, the better electrical conductivity is more conducive to the testing of electrical properties.

[0081] The structure of the fixed housing 32 is as Figure 14 shown, being cylindrical, including a fixed front end 326, a connection section 325, an installation section 324, and a second inner cavity 323 that runs through the entire fixed housing 32. Planes are provided at the top and bottom of the installation section 324 to ensure a tight fit with the workbench 6. Two second fixing holes 321 are provided in the installation section 324, and the fixed body 3 is fixedly connected to the fifth hole 66 on the workbench 6 through the second fixing holes 321. Between the two second fixing holes 321, a first through hole 322 is provided for the fixed elastic connecting tube 36 to pass through. The second inner cavity 323 can be in transitional fit with the fixed insulation outer interface 341 of the fixed insulator 34.

[0082] As Figure 16As shown, the fixed insulator 34 is a hollow tube, including the outer interface 341 of the fixed insulator and the third inner cavity 342 that runs through the entire axial direction of the fixed insulator 34. A second through-hole 343 is radially provided in the middle of the fixed insulator 34. The third inner cavity 342 is in transitional fit with the outer interface 331 of the fixed insulating part of the fixed adapter 33. After the second through-hole 343, the first through-hole 322 on the fixed housing 32, and the third through-hole 333 on the fixed adapter 33 are installed, they are on the same axis. The second through-hole 343 has the same size as the first through-hole 322 on the fixed housing 32 and is larger than the size of the third through-hole 333 on the fixed adapter 33.

[0083] The structure of the fixed adapter 33 is as Figure 15 shown. The fixed adapter 33 is cylindrical, including the outer interface 331 of the fixed insulator. A blind hole 332 extending axially is recessed inward from one end of the fixed adapter 33. A third through-hole 333 is provided in the middle of the fixed adapter 33, and the third through-hole 333 communicates with the blind hole 332. The fixed rod 31 is inserted into the blind hole 332, and the two are in interference fit. The fixed elastic connecting tube 36 is inserted into the third through-hole 333, and the two are in interference fit.

[0084] The fixed pin 37 is connected to the fixed elastic connecting tube 36 in a matching manner. The fixed elastic connecting tube 36 and the fixed pin 37 pass through the fourth hole 65 on the workbench 6. The tail of the fixed pin 37 is crimped with a wire through a crimping hole, ensuring a firm connection and simultaneously achieving stable signal transmission.

[0085] The structure of the push pin 27 is as Figure 17 shown. The push pin 27 includes a push pin end 275, a front section 274 of the push pin, a shoulder 273 of the push pin, and a rear section 272 of the push pin. A first wire connection cavity 271 is provided in the rear section 272 of the push pin, and the first wire connection cavity 271 can be connected to a wire to achieve signal transmission. The front section 274 of the push pin extends into the inner cavity of the push elastic connecting tube 26 to make contact. The push pin end 275 is treated with a rounded corner or chamfer, which facilitates the front section 274 of the push pin 27 to extend into the inner cavity of the push elastic connecting tube 26. The push pin 27 is treated with gold plating.

[0086] The structure of the fixed pin 37 is exactly the same as that of the push pin 27, so it will not be elaborated here. The second wire connection cavity 371 of the fixed pin 37 can be connected to a wire to achieve signal transmission. The front section 374 of the fixed pin extends into the fixed elastic connecting tube 36 to make contact. The fixed pin end 375 is treated with a rounded corner or chamfer, which facilitates the front section 374 of the fixed pin 37 to extend into the fixed elastic connecting tube 36. The fixed pin 37 is treated with gold plating.

[0087] The structure of the push elastic connecting tube 26 is as Figure 18As shown, one end of the push elastic connecting tube 26 is provided with four evenly distributed first slots 261 in the circumferential direction. The first slots 261 have a certain prestress after heat treatment and closing, which can ensure close contact with the push pin 27. The push elastic connecting tube 26 is gold-plated.

[0088] The structure of the fixed elastic connecting tube 36 is completely the same as that of the propulsive elastic connecting tube 26 and will not be described in detail.

[0089] The structure of the positioning slide block 5 is as follows Figure 6 As shown, a slide groove 52 is provided on each side of the bottom of the positioning slider 5, and the slide groove 52 can slide with the slide rail 68 on the workbench 6. A plurality of magnetic core placement grooves 51 are provided on the top of the positioning slider 5, and the magnetic core placement grooves 51 can be set to different depths according to the size of the magnetic core to ensure that the front section 211 of the push rod is located at the center of the magnetic core. The depth of the magnetic core placement groove 51 is preferably 1 / 3 of the height of the magnetic core of the corresponding model. Different magnetic core placement grooves 51 are provided on the top of the positioning slider 5 to realize the performance detection of magnetic cores of different models, and slide grooves 52 are provided on both sides of the bottom to make the loading and unloading of the magnetic core more convenient and quick.

[0090] The positioning slide block 5 is made of non-metallic material, preferably nylon material, which has good wear resistance and anti-skid properties, is non-conductive, and will not affect the magnetic field of the magnetic core.

[0091] The working principle of the present invention is as follows: one port of the transformer tester is connected to the first interface in the connection interface 1, the connection pin 13 of the first interface is connected to the push pin 27 through a wire, the push pin 27 is connected to the push rod 21 through the push elastic connecting tube 26 and the push adapter 23, the front section 211 of the push rod and the baffle 311 of the fixed rod 31 are contacted or separated through the feeding component 4; the fixed rod 31 is connected to the fixed pin 37 through the fixed adapter 33 and the fixed elastic connecting tube 36, the fixed pin 37 is connected to the connection pin 13 of the second interface through a wire, and the second interface is connected to another port of the transformer tester, thereby forming an overall test loop to realize the test of the core performance.

[0092] Pushing the push handle 42 toward the spring 43 can separate the front section 211 of the push rod from the baffle 311 of the fixed rod 31. When separated, the magnetic core can be loaded and unloaded. Loosening the push handle 42 can allow the front section 211 of the push rod to pass through the center of the magnetic core and contact the baffle 311 of the fixed rod 31 to form a closed loop for testing the performance of the magnetic core.

[0093] Compared with the prior art, the magnetic core performance detection device provided in this embodiment has high detection efficiency, high accuracy, stable signal transmission and small error.

[0094] Example 2

[0095] Embodiment 2 of the present invention relates to a device for detecting the performance of a magnetic core, which is further optimized on the basis of Embodiment 1.

[0096] Referring to Figure 19 , the device for detecting the performance of the magnetic core in Embodiment 2 further includes a protective cover 7 and a positioning block 8. Among them, the protective cover 7 is used to protect the front section 211 of the push rod, the baffle 311 of the fixed rod 31, and the magnetic core therein, and at the same time can fix and position the magnetic core card to prevent it from shaking. The positioning block 8 is used to limit the positioning slider 5 to ensure that the central axis of the magnetic core coincides with the central axes of the push rod 21 and the fixed rod 31, so as to improve the accuracy of detection.

[0097] Specifically, referring to Figure 20 , the workbench 6 further includes a block chute 610, which is perpendicular to the slide rail 69 and is used to place the positioning block 8. The positioning block 8 can reciprocate in the block chute 610. The workbench 6 is also provided with a protective cover positioning groove 611 for positioning the protective cover 7.

[0098] Referring to Figure 21 , the protective cover 7 includes two first side walls 72 and two second side walls 73 that enclose a rectangle and a top cover 71. Each first side wall 72 is provided with an opening for the push rod 21 or the fixed rod 31 to pass through respectively. Each second side wall 73 is provided with an opening for the positioning slider 5 to pass through. The bottoms of the four side walls are inserted into the protective cover positioning groove 611.

[0099] One side edge of the top cover 71 is hinged to one of the side walls through a hinge 74. Two locking pieces 711 protrude downward from the lower surface of the top cover 71, and the position and shape of the locking pieces 711 are adapted to fix and lock the magnetic core within the magnetic core placement groove 51 on the positioning slider 5 when the top cover 71 is closed. Preferably, the locking pieces 711 have a certain elasticity to adapt to magnetic cores of different specifications.

[0100] The protective cover 7 can protect the magnetic core, the push rod 21, and the fixed rod 31 from external interference, and improve the stability and reliability of the device.

[0101] Referring to Figure 22 , a plurality of positioning slots 53 are further provided on the side surface of the positioning slider 5. The number of the positioning slots 53 is equal to the number of the magnetic core placement grooves 51 and is arranged in one-to-one correspondence. When the positioning slider 5 moves into place, the positioning block 8 is snapped into the corresponding positioning slot 53 under the action of elastic force, so that the central axis of the magnetic core to be detected coincides with the central axes of the push rod 21 and the fixed rod 31.

[0102] The structure of the positioning block 8 is as shown in Figure 23As shown, it includes a toggle end 81 and a clamping end 82. The positioning block 8 is set in the clamping block slot 610 of the workbench 6, and an elastic member is set between the toggle end 81 and the clamping block slot 610 to bias the positioning block 8 toward the positioning slider 5. When in use, the toggle end 81 is pushed by hand to make the positioning block 8 retreat away from the positioning slider 5, and then the position of the positioning slider 5 is adjusted. After the adjustment is in place, the elastic member pushes the clamping end 82 of the positioning block 8 to extend into the positioning slot 53 to achieve the positioning of the magnetic core.

[0103] The magnetic core performance detection device of the second embodiment can more accurately position the magnetic core and can ensure that the magnetic core remains in place without shaking due to external forces during the detection process, thereby improving the accuracy and reliability of the detection.

[0104] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A magnetic core performance detection device, characterized in that: It includes a workbench and a connection interface, a propulsion body, a fixed body, a feeding component and a positioning slider fixedly arranged on the workbench; the positioning slider is movably arranged in the middle of the upper surface of the workbench, and is used to fix the magnetic core to be detected; the propulsion body and the fixed body are respectively arranged on both sides of the positioning slider, and the propulsion body includes a propulsion rod, and the end of the propulsion rod facing the fixed body can pass through the middle of the magnetic core and abut against the end of the fixed body facing the propulsion body; the feeding component is arranged on the side of the propulsion body away from the positioning slider, and can drive the propulsion rod to reciprocate in the direction toward or away from the fixed body; the connection interface includes at least a first interface and a second interface, wherein the first interface is electrically connected to the propulsion rod, and the second interface is electrically connected to the fixed body.

2. The magnetic core performance detection device according to claim 1, characterized in that: The connection interface includes a connection housing.

3. The magnetic core performance detection device according to claim 2, characterized in that: The outer surface of the connection shell is evenly distributed with a plurality of locking grooves around its circumference, and the locking grooves are used for locking and fixing the connection with the ports of the transformer tester.

4. The magnetic core performance detection device according to claim 3, characterized in that: The connection interface also includes a connection pin and a first insulator.

5. The magnetic core performance detection device according to claim 4, characterized in that: The connecting pin is installed in the first insulator, and the first insulator is arranged in the connecting housing.

6. The magnetic core performance detection device according to claim 1, characterized in that: The propulsion body further comprises a propulsion shell, a propulsion adapter and a propulsion insulator.

7. The magnetic core performance detection device according to claim 6, characterized in that: The propulsion shell is fixedly arranged on the workbench, the propulsion insulator is fixedly arranged inside the propulsion shell, the propulsion adapter is reciprocatably arranged inside the propulsion insulator, and one end of the propulsion adapter is electrically connected to the propulsion rod.

8. The magnetic core performance detection device according to claim 7, characterized in that: The propulsion body also includes a propulsion elastic connecting tube and a propulsion pin.

9. The magnetic core performance detection device according to claim 8, characterized in that: The middle portion of the propulsion adapter is electrically connected to one end of the propulsion elastic connecting tube, and the other end of the propulsion elastic connecting tube is electrically connected to the propulsion pin.

10. The magnetic core performance detection device according to claim 9, characterized in that: The propulsion body further comprises a propulsion insulator, one end of which is fixedly connected to an end of the propulsion adapter away from the propulsion rod, and the other end of the propulsion insulator is fixedly connected to the feeding component.

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