A detection size jig for common mode inductance

Abstract

The utility model discloses a kind of detection size jigs for common mode inductance, applied to the size of detecting common mode inductance, including detection main body, detection main body has the detection cavity through along first direction;The two ends of detection cavity are equipped with import and export respectively;Detection cavity has two first detection surfaces oppositely arranged in second direction and two second detection surfaces oppositely arranged in third direction;Two first detection surfaces are used to detect the width of common mode inductance, and two second detection surfaces are used to detect the height of common mode inductance;Two first detection surfaces are equipped with the positioning slot for the base adaptation of common mode inductance to pass through;Detection cavity is equipped with detection slot in the side wall of one of second detection surfaces, for detecting the width and length of lead of common mode inductance by detection slot;First direction, second direction and third direction are perpendicular to each other in pairs. Solve the mode of measuring each standard size of common mode inductance one by one by artificial use vernier caliper, time-consuming and laborious, and the problem of lower production capacity.

Description

Technical Field

[0001] This utility model relates to the field of electrical component technology, specifically to a common mode inductor detection dimension fixture. Background Technology

[0002] Common mode inductors are mainly used in inverters to suppress electromagnetic interference (EMI) and noise, while also providing filtering functions to ensure stable equipment operation. The current process for common mode inductors is as follows: unwinding, winding, initial shaping, corner trimming, impregnation, paint removal and epoxy board insertion, testing, dispensing, baking, secondary corner trimming, tinning, corner alignment, attaching dialysis strips, retesting, dimension inspection, labeling, and packaging.

[0003] In related technologies, when inspecting the dimensions of common mode inductors, vernier calipers are usually used manually to measure each standard dimension of the common mode inductor one by one, which is time-consuming, labor-intensive, and results in low production capacity. Utility Model Content

[0004] This invention provides a dimensional measuring fixture for common mode inductors, which solves the problem of time-consuming, labor-intensive, and low-productivity methods that rely on manually measuring the standard dimensions of common mode inductors one by one using vernier calipers.

[0005] This utility model provides a common mode inductor detection dimension fixture, which is used to detect the dimensions of a common mode inductor. It includes a detection body, and the detection body has a detection cavity that extends along a first direction. The detection chamber has an inlet and an outlet at its two ends, respectively; The detection cavity has two first detection surfaces arranged opposite each other in a second direction and two second detection surfaces arranged opposite each other in a third direction; the two first detection surfaces are used to detect the width of the common mode inductor and the two second detection surfaces are used to detect the height of the common mode inductor. Both of the first detection surfaces are provided with positioning slots for the common mode inductor's base to fit through; The detection cavity has a detection groove on one of the side walls where the second detection surface is located, which is used to detect the width and length of the lead wire of the common mode inductor; the first direction, the second direction and the third direction are perpendicular to each other.

[0006] Beneficial effects: The detection cavity of the main body is used to check whether the size of the common-mode inductor meets the requirements. During testing, the common-mode inductor is placed into the detection cavity through the inlet, aligning the base of the common-mode inductor with the positioning slots on both sides and the leads of the common-mode inductor with the detection slots. Then, the common-mode inductor is pushed into the detection cavity, moving from the inlet to the outlet within the cavity. During the movement of the common-mode inductor, the height of the common-mode inductor is checked through two second detection surfaces to ensure it meets the requirements, and the width of the common-mode inductor is checked through two first detection surfaces to ensure it meets the requirements. The common-mode inductor's lead wires are then checked through the detection slots. The width and height of the common mode inductor's leads are checked to ensure they meet requirements. If the common mode inductor experiences obstruction, dryness, or cannot be removed during movement, it indicates that the inductor's dimensions are abnormal and it is unqualified, requiring isolation. If the common mode inductor passes smoothly through the testing chamber, it indicates that all dimensions of the common mode inductor are within range and it is qualified. This completes the dimensional inspection of the common mode inductor. The overall structure of the testing unit is simple and easy to operate, avoiding the need to inspect the dimensions of each common mode inductor individually with calipers. This optimizes the work process, reduces personnel fatigue, saves time and effort, and increases production capacity.

[0007] In one optional embodiment, the detection cavity includes a detection area and a passage area arranged sequentially along a first direction. The first detection surface, the second detection surface, the detection groove, and the positioning groove are all located in the detection area, and the projection of the detection area in the first direction falls within the range of the passage area.

[0008] Beneficial effects: The detection cavity is divided into a detection area and a passage area, and the passage area of ​​the common mode inductor in the passage area is larger than that in the detection area. This makes it easier to remove the common mode inductor from the passage area after the test is completed, avoiding jamming or bumping, and improving the detection effect and efficiency.

[0009] In one optional embodiment, the detection area includes a first sub-detection area and a second sub-detection area arranged sequentially along a first direction, with two first detection surfaces located in the first sub-detection area and two second detection surfaces located in the second sub-detection area; the distance between the two side walls of the first sub-detection area in the third direction is greater than the distance between the two second detection surfaces; the distance between the two side walls of the second sub-detection area in the second direction is greater than or equal to the distance between the two first detection surfaces.

[0010] Beneficial effect: The detection area is divided into a first sub-detection area and a second sub-detection area in the detection direction of the common mode inductor. During detection, the common mode inductor is first tested for width in the first sub-detection area through two second detection surfaces, and then tested for height in the second sub-detection area through two second detection surfaces. In this way, the width and height of the common mode inductor are detected separately, so that common mode inductors with unqualified height, unqualified width, or both can be classified.

[0011] In one optional implementation, each of the detection slots in the passage area is provided with a lead wire slot, and the lead wire slot is connected to the detection slot.

[0012] Beneficial effects: Each detection slot in the zone is equipped with a lead slot, which facilitates the transfer of the common-mode inductor's lead from the detection slot to the lead slot for removal. The depth of the lead slot can be set to be deeper than that of the detection slot, improving the smoothness of removing the common-mode inductor and increasing detection efficiency.

[0013] In one optional embodiment, the side of the detection body is provided with an observation window communicating with its internal cavity.

[0014] Beneficial effects: By setting an observation window, it is easy to observe which position of the common mode inductor is stuck in the detection cavity, and it is also easy to move the common mode inductor through the observation window to remove the common mode inductor.

[0015] In one alternative implementation, the observation window is located at the end of the detection body away from the detection slot.

[0016] Beneficial effect: The observation window is located at the end of the detection body away from the detection slot, which facilitates the operation of the common mode inductor.

[0017] In one alternative implementation, the observation window is provided in two parts, and is symmetrically arranged upwards on the third side.

[0018] Beneficial effects: By setting two observation windows, more operating space is provided to facilitate the observation and removal of the common-mode inductor.

[0019] In one alternative implementation, the detection body is made of bakelite.

[0020] Beneficial effects: The testing body is made of bakelite, which has a certain degree of hardness and can prevent damage to the common mode inductor during the testing process, thus playing a protective role.

[0021] In one alternative implementation, the periphery of the outlet is chamfered.

[0022] Beneficial effect: The chamfer around the exit serves as a guide, facilitating the smooth entry of the common-mode inductor into the detection chamber.

[0023] In one alternative implementation, the detection body is integrally formed.

[0024] Beneficial effect: The main body of the test is integrally molded to improve the overall structural strength. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a common mode inductor detection dimension fixture according to an embodiment of the present invention, viewed from a first perspective. Figure 2 This is a schematic diagram of the structure of a common mode inductor detection dimension fixture from a second perspective according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the common-mode inductor from a third perspective according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the common-mode inductor of this utility model from a fourth perspective. Figure 5 This is a schematic diagram of the common-mode inductor of this embodiment from the fifth perspective; Figure 6 This is a schematic diagram of the common-mode inductor of this embodiment from the sixth perspective.

[0027] Explanation of reference numerals in the attached figures: 1. Detection body; 2. Inlet; 3. Outlet; 4. First detection surface; 5. Second detection surface; 6. Common mode inductor; 7. Base; 8. Lead wire; 9. Positioning groove; 10. Detection groove; 11. Pass-through area; 12. First sub-detection area; 13. Second sub-detection area; 14. Lead wire groove; 15. Observation window; 16. Chamfer. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] The following is combined with Figures 1 to 6 The following describes embodiments of the present invention.

[0030] According to an embodiment of this utility model, a common-mode inductor measurement fixture is provided for measuring the dimensions of a common-mode inductor 6. The fixture includes a measurement body 1 with a measurement cavity extending along a first direction. The measurement cavity has an inlet 2 and an outlet 3 at its two ends. The measurement cavity has two first measurement surfaces 4 arranged opposite each other in a second direction, and two second measurement surfaces 5 arranged opposite each other in a third direction. The two first measurement surfaces 4 are used to measure the width of the common-mode inductor 6, and the two second measurement surfaces 5 are used to measure the height of the common-mode inductor 6. Each of the two first measurement surfaces 4 has a positioning groove 9 for the common-mode inductor 6's base 7 to pass through. A measurement groove 10 is provided on the side wall of one of the second measurement surfaces 5 within the measurement cavity, for measuring the width and length of the common-mode inductor 6's lead wire 8. The first direction, the second direction, and the third direction are mutually perpendicular.

[0031] It should be noted that the two first detection surfaces 4 are parallel, and the two second detection surfaces 5 are parallel.

[0032] In this embodiment, the common-mode inductor 6 is tested to determine whether its dimensions meet the requirements through the testing cavity of the testing body 1. During testing, the common-mode inductor 6 is placed into the testing cavity through the inlet 2, and the base 7 of the common-mode inductor 6 is aligned with the positioning slots 9 on both sides, and the lead wire 8 of the common-mode inductor 6 is aligned with the testing slot 10. Then, the common-mode inductor 6 is pushed into the testing cavity, causing it to move from the inlet 2 to the outlet 3 within the testing cavity. During the movement of the common-mode inductor 6, the height of the common-mode inductor 6 is detected by the two second testing surfaces 5, and the width of the common-mode inductor 6 is detected by the two first testing surfaces 4. The dimensions of the common-mode inductor 6 are then detected by the testing slot. 10. Check whether the width and height of the lead wire 8 of the common mode inductor 6 meet the requirements. If the common mode inductor 6 is obstructed, dry, or cannot be removed during the movement, it indicates that the size of the common mode inductor 6 is abnormal and unqualified, and it needs to be isolated. If the common mode inductor 6 can pass smoothly in the detection cavity, it indicates that all the dimensions of the common mode inductor 6 are within the range and are qualified. This completes the size detection of the common mode inductor 6. The detection body 1 has a simple overall structure and is easy to operate. It avoids checking the size of the common mode inductor 6 one by one with vernier calipers, optimizes the operation steps, reduces the fatigue intensity of personnel, saves time and effort, and increases production capacity.

[0033] In one embodiment, such as Figure 1 and Figure 2 As shown, the detection cavity includes a detection area and a passage area 11 arranged sequentially along the first direction. The first detection surface 4, the second detection surface 5, the detection groove 10 and the positioning groove 9 are all located in the detection area, and the projection of the detection area in the first direction falls within the range of the passage area 11.

[0034] It should be noted that the projected area of ​​the detection zone in the first direction is smaller than the projected area of ​​the passage zone 11 in the first direction; the exit 3 is located in the passage zone 11.

[0035] In this embodiment, the detection cavity is divided into a detection area and a passage area 11, and the passage area of ​​the common mode inductor 6 in the passage area 11 is larger than the passage area in the detection area, so that the common mode inductor 6 can be easily removed from the passage area 11 after the detection is completed, avoiding jamming or bumping, and improving the detection effect and efficiency.

[0036] Specifically, a first side slot is opened in the two side walls in the second direction within region 11, and a second side slot is opened in the two side walls in the third direction, so as to expand the passage area and facilitate the removal of the common mode inductor 6.

[0037] In one embodiment, such as Figure 1 and Figure 2 As shown, the detection area includes a first sub-detection area 12 and a second sub-detection area 13 arranged sequentially along a first direction. Two first detection surfaces 4 are located in the first sub-detection area 12, and two second detection surfaces 5 are located in the second sub-detection area 13. The distance between the two side walls of the first sub-detection area 12 in the third direction is greater than the distance between the two second detection surfaces 5. The distance between the two side walls of the second sub-detection area 13 in the second direction is greater than or equal to the distance between the two first detection surfaces 4.

[0038] It should be noted that the inlet 2 is located in the first sub-detection area 12; the second detection surface 5, which is close to the detection slot 10, is flush with the side wall of the first sub-detection area 12.

[0039] In this embodiment, the detection area is divided into a first sub-detection area 12 and a second sub-detection area 13 in the detection direction of the common mode inductor 6. During detection, the common mode inductor 6 is first detected in the first sub-detection area 12 by two second detection surfaces 5 to check whether its width is qualified. Then, in the second sub-detection area 13, its height is detected in the second detection area 13 by two second detection surfaces 5 to check whether its height is qualified. Thus, the width and height of the common mode inductor 6 are detected respectively, so that common mode inductors 6 with unqualified height, unqualified width, or both are classified.

[0040] In one embodiment, such as Figure 2 As shown, each detection slot 10 in zone 11 is provided with a lead wire slot 14, which is connected to the detection slot 10.

[0041] In this embodiment, each detection slot 10 in area 11 is provided with a lead slot 14 so that the lead 8 of the common mode inductor 6 can be taken out from the detection slot 10 to the lead slot 14. The depth of the lead slot 14 can be set to be deeper than the depth of the detection slot 10 to improve the smoothness of taking out the common mode inductor 6 and improve the detection efficiency.

[0042] In one embodiment, such as Figure 1 and Figure 2 As shown, the side of the detection body 1 is provided with an observation window 15 that communicates with its internal cavity.

[0043] In this embodiment, an observation window 15 is provided to facilitate observation of which position of the common-mode inductor 6 is stuck in the detection cavity, and to facilitate operation and movement of the common-mode inductor 6 through the observation window 15 so as to remove the common-mode inductor 6.

[0044] In one embodiment, such as Figure 1 and Figure 2 As shown, the observation window 15 is located at the end of the detection body 1 away from the detection groove 10.

[0045] In this embodiment, the observation window 15 is located at the end of the detection body 1 away from the detection slot 10, which facilitates the operation of the common mode inductor 6.

[0046] In one embodiment, such as Figure 1 and Figure 2 As shown, there are two observation windows 15, which are symmetrically arranged on the third side.

[0047] In this embodiment, by providing two observation windows 15, more operating space is provided to facilitate the observation of the common-mode inductor 6 and the removal of the common-mode inductor 6.

[0048] In one embodiment, the material of the detection body 1 is bakelite.

[0049] In this embodiment, the detection body 1 is made of bakelite, which has a certain degree of hardness and can prevent the common mode inductor 6 from being damaged by bumps during the detection process, thus playing a protective role.

[0050] In one embodiment, such as Figure 1 As shown, the periphery of outlet 3 is chamfered by 16.

[0051] In this embodiment, a chamfer 16 is provided around the periphery of the outlet 3 to serve as a guide, so that the common mode inductor 6 can smoothly enter the detection cavity.

[0052] In one embodiment, the detection body 1 is integrally formed.

[0053] In this embodiment, the detection body 1 is integrally formed to improve the overall structural strength.

[0054] The specific working principle of the common mode inductor detection dimension fixture provided in this embodiment is as follows: During detection, the common mode inductor 6 is placed into the detection cavity through the inlet 2, and the base 7 of the common mode inductor 6 is aligned with the positioning grooves 9 on both sides, and the lead wire 8 of the common mode inductor 6 is aligned with the detection groove 10. Then, the common mode inductor 6 is pushed into the detection cavity, so that the common mode inductor 6 moves from the inlet 2 to the outlet 3 in the detection cavity. During the movement of the common mode inductor 6, its width is first detected in the first sub-detection area 12 through two second detection surfaces 5 (e.g., Figure 3 Whether L1 in the middle is qualified, and at the same time, the width of the lead 8 of the common mode inductor 6 is detected by the detection slot 10 (e.g., Figure 4 L2 in the middle) and height (such as Figure 3 If L3 in the middle meets the requirements, then move to the second sub-detection area 13. In the second sub-detection area 13, its height is detected by two second detection surfaces 5 (e.g., Figure 3 If the common mode inductor 6 is obstructed, dry, or cannot be removed during the movement process, it indicates that the size of the common mode inductor 6 is abnormal and unqualified, requiring isolation. If the common mode inductor 6 can pass smoothly in the detection cavity, it indicates that all the dimensions of the common mode inductor 6 are within the range and it is qualified. This completes the size detection and classification of the common mode inductor 6. Finally, the common mode inductor 6 is moved to the passage area 11 and removed from the outlet 3, solving the problem of time-consuming, labor-intensive, and low-productivity method of manually measuring the standard dimensions of the common mode inductor 6 one by one using vernier calipers.

[0055] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A dimensional measuring fixture for common-mode inductors, characterized in that, The size of the common-mode inductor (6) is used for detection, including a detection body (1) having a detection cavity extending along a first direction; The detection cavity is provided with an inlet (2) and an outlet (3) at its two ends respectively; The detection cavity has two first detection surfaces (4) arranged opposite to each other in a second direction, and two second detection surfaces (5) arranged opposite to each other in a third direction; the two first detection surfaces (4) are used to detect the width of the common mode inductor (6), and the two second detection surfaces (5) are used to detect the height of the common mode inductor (6); Both of the first detection surfaces (4) are provided with positioning slots (9) for the common mode inductor (6) to be adapted to the base (7); The detection cavity has a detection groove (10) on the side wall where one of the second detection surfaces (5) is located. The groove (10) is used to detect the width and length of the lead (8) of the common mode inductor (6). The first direction, the second direction and the third direction are perpendicular to each other.

2. The common-mode inductor detection dimensional fixture according to claim 1, characterized in that, The detection cavity includes a detection area and a passage area (11) arranged sequentially along a first direction. The first detection surface (4), the second detection surface (5), the detection groove (10) and the positioning groove (9) are all located in the detection area. The projection of the detection area in the first direction falls within the range of the passage area (11).

3. The common-mode inductor detection dimensional fixture according to claim 2, characterized in that, The detection area includes a first sub-detection area (12) and a second sub-detection area (13) arranged sequentially along a first direction. Two first detection surfaces (4) are located in the first sub-detection area (12), and two second detection surfaces (5) are located in the second sub-detection area (13). The distance between the two side walls of the first sub-detection area (12) in the third direction is greater than the distance between the two second detection surfaces (5). The distance between the two side walls of the second sub-detection area (13) in the second direction is greater than or equal to the distance between the two first detection surfaces (4).

4. The common-mode inductor detection dimensional fixture according to claim 2, characterized in that, Each detection slot (10) in the passage area (11) is provided with a lead wire slot (14), and the lead wire slot (14) is connected to the detection slot (10).

5. The common-mode inductor measurement fixture according to any one of claims 1 to 4, characterized in that, The detection body (1) has an observation window (15) on its side that communicates with its internal cavity.

6. The common-mode inductor measurement fixture according to claim 5, characterized in that, The observation window (15) is located at one end of the detection body (1) away from the detection groove (10).

7. The common-mode inductor detection dimensional fixture according to claim 5, characterized in that, The observation window (15) is provided in two parts, and is symmetrically arranged on the third side upwards.

8. The common-mode inductor measurement fixture according to claim 1, characterized in that, The material of the detection body (1) is bakelite.

9. The common-mode inductor measurement fixture according to claim 1, characterized in that, The periphery of the outlet (3) is chamfered (16).

10. The common-mode inductor measurement fixture according to claim 1, characterized in that, The detection body (1) is integrally formed.

Images