A kind of mutual inductor fixing mechanism

Abstract

The utility model provides a kind of mutual inductor fixing mechanism, including mutual inductor to be fixed, first conical fixing plate, second conical fixing plate, copper bar and fixing piece;The first conical fixing plate, the second conical fixing plate, the copper bar are inserted into the arc-shaped installation hole of the mutual inductor and are fixed by the fixing piece;Wherein the first conical fixing plate is located at the first side of the copper bar and abuts against the first end surface of the mutual inductor, and the second conical fixing plate is located at the second side of the copper bar and abuts against the second end surface of the mutual inductor, so that the mutual inductor is clamped and fixed on the copper bar by the first conical fixing plate and the second conical fixing plate. The utility model is implemented mutual inductor fixing mechanism, cleverly through the clamping matching of two conical fixing plates and the circular arc hole of mutual inductor, only need to adopt two conical fixing plates plus fixing piece to fix mutual inductor on copper bar, and the structure is simple, reliable, installation space is small and cost is low.

Description

Technical Field

[0001] This utility model relates to the field of current transformers, and more specifically, to a current transformer fixing mechanism. Background Technology

[0002] Commonly used instrument transformers in the industry include circular and square transformers. Circular transformers are difficult to secure due to their curved surface. Current solutions typically involve directly fixing them to the copper busbar with cable ties or adding metal components to the transformer body to secure it to the busbar. However, cable ties are unreliable and prone to aging, while adding metal components increases installation space and cost. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a current transformer fixing mechanism that is simple in structure, reliable, requires little installation space and has low cost, in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is: to construct a current transformer fixing mechanism, including a current transformer to be fixed, a first conical fixing plate, a second conical fixing plate, a copper busbar and a fixing component; The first conical fixing plate, the second conical fixing plate, and the copper busbar are inserted into the arc-shaped mounting hole of the current transformer and fixed by the fixing component; The first conical fixing plate is located on the first side of the copper busbar and abuts against the first end face of the current transformer, and the second conical fixing plate is located on the second side of the copper busbar and abuts against the second end face of the current transformer, so that the current transformer is clamped and fixed on the copper busbar by the first conical fixing plate and the second conical fixing plate.

[0005] In the current transformer fixing mechanism of this utility model, the first conical fixing plate includes a first rectangular portion and a first isosceles trapezoidal portion extending from the middle of the long side of the first rectangular portion away from the first rectangular portion and with decreasing width; the length of the first rectangular portion is greater than the length of the base of the first isosceles trapezoidal portion, thereby forming a first L-shaped step surface and a second L-shaped step surface between the two sides of the first isosceles trapezoidal portion and the two ends of the first rectangular portion.

[0006] In the current transformer fixing mechanism of this utility model, the second conical fixing plate includes a second rectangular portion and a second isosceles trapezoidal portion extending from the middle of the long side of the second rectangular portion away from the second rectangular portion and with decreasing width; the length of the second rectangular portion is greater than the length of the base of the second isosceles trapezoidal portion, thereby forming a third L-shaped step surface and a fourth L-shaped step surface between the two sides of the second isosceles trapezoidal portion and the two ends of the second rectangular portion.

[0007] In the current transformer fixing mechanism of this utility model, the current transformer includes a first main body and a second main body, and the arc-shaped mounting hole is disposed in the center of the first main body and the second main body; The first main body is mounted above the second main body; the second main body includes a first support portion and a second support portion located on both sides of the first end of the arc-shaped mounting hole, and a third support portion and a fourth support portion located on both sides of the second end of the arc-shaped mounting hole.

[0008] In the current transformer fixing mechanism described in this utility model, the base length of the first isosceles trapezoid and the base length of the second isosceles trapezoid are equal to the diameter of the arc-shaped mounting hole. The length of the first rectangular portion is equal to the length of the second rectangular portion and is greater than the diameter of the arc-shaped mounting hole.

[0009] In the current transformer fixing mechanism of this utility model, when the current transformer is clamped and fixed by the first conical fixing plate and the second conical fixing plate; the first side of the first L-shaped step surface and the first side of the second L-shaped step surface pass through the arc-shaped mounting hole along the first direction, and the first side of the third L-shaped step surface and the first side of the fourth L-shaped step surface pass through the arc-shaped mounting hole along the second direction. The first direction and the second direction are opposite. The first end of the first rectangular portion is located on the first support portion, the second end of the first rectangular portion is located on the second support portion, the first end of the second rectangular portion is located on the third support portion, and the second end of the first rectangular portion is located on the fourth support portion.

[0010] In the current transformer fixing mechanism of this utility model, the second side surface of the first L-shaped step surface and the second side surface of the second L-shaped step surface respectively abut against the first end face of the first main body, and the second side surface of the third L-shaped step surface and the second side surface of the fourth L-shaped step surface respectively abut against the second end face of the first main body.

[0011] In the current transformer fixing mechanism of this utility model, a first fixing screw hole is provided on the first rectangular portion, a second fixing screw hole is provided on the second rectangular portion, a third fixing screw hole is provided on the first isosceles trapezoidal portion, and a fourth fixing screw hole is provided on the second isosceles trapezoidal portion. The copper busbar is provided with a fifth fixing screw hole and a sixth fixing screw hole; The first fixing screw hole, the third fixing screw hole, and the fifth fixing screw hole are directly opposite each other; The second fixing screw hole, the fourth fixing screw hole, and the sixth fixing screw hole are directly opposite each other.

[0012] In the current transformer fixing mechanism of this utility model, the fixing component includes a first fixing screw and a second fixing screw; The first fixing screw passes through the first fixing screw hole, the third fixing screw hole, and the fifth fixing screw hole, and the second fixing screw passes through the second fixing screw hole, the fourth fixing screw hole, and the sixth fixing screw hole, thereby clamping and fixing the current transformer to the copper busbar by the first tapered fixing plate and the second tapered fixing plate.

[0013] In the current transformer fixing mechanism of this utility model, the first rectangular part and the first isosceles trapezoidal part are integrally formed, the second rectangular part and the second isosceles trapezoidal part are integrally formed, and the first conical fixing plate and the second conical fixing plate are insulating plates with the same shape.

[0014] The current transformer fixing mechanism of this utility model cleverly matches the two conical fixing plates with the arc-shaped hole of the current transformer. Only two conical fixing plates and fixing parts are needed to fix the current transformer on the copper busbar. The structure is simple, reliable, requires little installation space and is low in cost. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is an exploded structural diagram of a preferred embodiment of the current transformer fixing mechanism of this utility model; Figure 2 This is an assembly diagram of a preferred embodiment of the current transformer fixing mechanism of this utility model; Figure 3 This is a schematic diagram of the structure of the first conical fixing plate of the current transformer fixing mechanism of this utility model; Figure 4 This is a schematic diagram of the structure of the second conical fixing plate of the current transformer fixing mechanism of this utility model. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] Figure 1 This is an exploded structural diagram of a preferred embodiment of the current transformer fixing mechanism of this utility model. Figure 2 This is an assembly diagram of a preferred embodiment of the current transformer fixing mechanism of this utility model. Figures 1-2As shown, the current transformer fixing mechanism includes a current transformer 100 to be fixed, a first conical fixing plate 200, a second conical fixing plate 300, a copper busbar 400, and a fixing member 500. The first conical fixing plate 200, the second conical fixing plate 300, and the copper busbar 400 are inserted into the arc-shaped mounting hole 101 of the current transformer 100 and fixed by the fixing member 500; wherein the first conical fixing plate 200 is located on the first side of the copper busbar 400 and abuts against the first end face 110 of the current transformer 100, and the second conical fixing plate 300 is located on the second side of the copper busbar 400 and abuts against the second end face 120 of the current transformer 100, so that the current transformer 100 is clamped and fixed on the copper busbar 400 by the first conical fixing plate 200 and the second conical fixing plate 300.

[0018] The current transformer fixing mechanism of this utility model cleverly matches the two conical fixing plates with the arc-shaped hole of the current transformer. Only two conical fixing plates and fixing parts are needed to fix the current transformer on the copper busbar. The structure is simple, reliable, requires little installation space and is low in cost.

[0019] Figure 3 This is a schematic diagram of the structure of the first conical fixing plate of the current transformer fixing mechanism of this utility model. Figure 4 This is a schematic diagram of the structure of the second conical fixing plate of the current transformer fixing mechanism of this utility model. (Combined with...) Figures 1-4 As can be seen, in a preferred embodiment of the present invention, the first conical fixing plate 200 includes a first rectangular portion 210 and a first isosceles trapezoidal portion 220 extending from the middle of the long side of the first rectangular portion 210 away from the first rectangular portion 210 and with decreasing width; the length of the first rectangular portion 210 is greater than the length of the base of the first isosceles trapezoidal portion 220, thereby forming a first L-shaped step surface 230 and a second L-shaped step surface 240 between the two sides of the first isosceles trapezoidal portion 220 and the two ends of the first rectangular portion 210.

[0020] The second conical fixing plate 300 includes a second rectangular portion 310 and a second isosceles trapezoidal portion 320 extending from the middle of the long side of the second rectangular portion 310 away from the second rectangular portion 310 and decreasing in width; the length of the second rectangular portion 310 is greater than the length of the base of the second isosceles trapezoidal portion 320, thereby forming a third L-shaped step surface 330 and a fourth L-shaped step surface 340 between the two sides of the second isosceles trapezoidal portion 320 and the two ends of the second rectangular portion 310.

[0021] In a preferred embodiment of this utility model, the first conical fixing plate 200 and the second conical fixing plate 300 have the same shape and are constructed using an insulating plate. In a preferred embodiment of this utility model, the first rectangular portion 210 and the first isosceles trapezoidal portion 220 are integrally formed, and the second rectangular portion 310 and the second isosceles trapezoidal portion 320 are integrally formed. Further as Figures 1-2 As shown, the current transformer 100 includes a first main body 140 and a second main body 130, with an arc-shaped mounting hole 101 disposed at the center of the first main body 140 and the second main body 130. The first main body 140 is mounted above the second main body 130; the second main body 130 includes a first support portion 131 and a second support portion 132 located on both sides of the first end of the arc-shaped mounting hole 101, and a third support portion 133 and a fourth support portion located on both sides of the second end of the arc-shaped mounting hole 101. The upper half of the arc-shaped mounting hole 101 is located at the center of the first main body 140, and the lower half is located at the center of the second main body 130. The first support portion 131, the second support portion 132, the third support portion 133, and the fourth support portion are disposed on both sides of the two ends of the arc-shaped mounting hole 101. In a preferred embodiment of the present invention, the base length of the first isosceles trapezoid and the base length of the second isosceles trapezoid are equal to the diameter of the arc-shaped mounting hole 101; the length of the first rectangular portion 210 is equal to the length of the second rectangular portion 310 and is greater than the diameter of the arc-shaped mounting hole 101.

[0022] like Figure 2As shown, when the current transformer 100 is clamped and fixed by the first conical fixing plate 200 and the second conical fixing plate 300; the first side surface 231 of the first L-shaped step surface 230 and the first side surface 241 of the second L-shaped step surface 240 pass through the arc-shaped mounting hole 101 along the first direction A, and the first side surface 331 of the third L-shaped step surface 330 and the first side surface 341 of the fourth L-shaped step surface 340 pass through the arc-shaped mounting hole 101 along the second direction B, where the first direction and the second direction are opposite. The first end of the first rectangular portion 210 is located on the first support portion 131, the second end of the first rectangular portion 210 is located on the second support portion 132, the first end of the second rectangular portion 310 is located on the third support portion 133, and the second end of the first rectangular portion 210 is located on the fourth support portion. The second side surface 232 of the first L-shaped step surface 230 and the second side surface 242 of the second L-shaped step surface 240 respectively abut against the first end face 141 of the first main body 140, and the second side surface 332 of the third L-shaped step surface 330 and the second side surface 342 of the fourth L-shaped step surface 340 respectively abut against both sides of the second end face of the first main body 140. The second end face is the side facing away from the first end face 141.

[0023] like Figures 1-4 As shown, the first rectangular portion 210 is provided with a first fixing screw hole 211, the second rectangular portion 310 is provided with a second fixing screw hole 311, the first isosceles trapezoidal portion 220 is provided with a third fixing screw hole 221, and the second isosceles trapezoidal portion 320 is provided with a fourth fixing screw hole 321; the copper busbar 400 is provided with a fifth fixing screw hole 410 and a sixth fixing screw hole; the first fixing screw hole 211, the third fixing screw hole 221 and the fifth fixing screw hole 410 are directly opposite each other; the second fixing screw hole 311, the fourth fixing screw hole 321 and the sixth fixing screw hole are directly opposite each other. The fixing member 500 includes a first fixing screw 510 and a second fixing screw; the first fixing screw 510 passes through the first fixing screw hole 211, the third fixing screw hole 221 and the fifth fixing screw hole 410, and the second fixing screw passes through the second fixing screw hole 311, the fourth fixing screw hole 321 and the sixth fixing screw hole, so that the current transformer 100 is clamped and fixed on the copper busbar 400 by the first tapered fixing plate 200 and the second tapered fixing plate 300.

[0024] In a preferred embodiment of this utility model, the first conical fixing plate 200 and the second conical fixing plate 300 are insulating plates with the same shape.

[0025] In a preferred embodiment of this utility model, only one set of fixing screw holes and corresponding fixing screws may be provided, or multiple sets of fixing screw holes and corresponding fixing screws may be provided; all of these fall within the protection scope of this utility model. Of course, the fixing member 500 may also adopt other fixing methods, such as welding, bonding, etc.

[0026] The current transformer fixing mechanism of this utility model includes a current transformer 100, a first conical fixing plate 200, a second conical fixing plate 300, a copper busbar 400, and a fixing member 500. During installation, the second conical fixing plate 300 is first passed through the arc-shaped mounting hole 101 of the current transformer 100 along the second direction B and placed on the third support part 133 and the fourth support part. At this time, the second side surface 332 of the third L-shaped step surface 330 and the second side surface 342 of the fourth L-shaped step surface 340 respectively abut against the two sides of the second end face of the first main body part 140. Next, the copper busbar 400 is passed through the arc-shaped mounting hole 101 of the transformer 100 along the second direction B or the first direction A based on the current direction, and placed on the second conical fixing plate 300. Then, the first conical fixing plate 200 is inserted into the arc-shaped mounting hole 101 of the transformer 100 above the copper busbar 400 along the first direction A until the second side surface 232 of the first L-shaped step surface 230 and the second side surface 242 of the second L-shaped step surface 240 respectively abut against the two sides of the first end face 141 of the first main body 140. At this time, the first side surface 231 of the first L-shaped step surface 230 and the first side surface 241 of the second L-shaped step surface 240 pass through the arc-shaped mounting hole 101 along the first direction A, and the first end of the first rectangular part 210 is located on the first support part 131, and the second end of the first rectangular part 210 is located on the second support part 132. In this way, the transformer is actually clamped and fixed between the first conical fixing plate 200 and the second conical fixing plate 300. At this point, the current transformer can be fixed to the copper busbar by passing the fixing screws through the fixing screw holes.

[0027] This invention effectively solves the problem of fixing the current transformer. It has a simple and reliable structure. At the same time, the first conical fixing plate 200 and the second conical fixing plate 300 can adopt an insulating structure. In this case, the first conical fixing plate 200 and the second conical fixing plate 300 can isolate the copper busbar from the current transformer housing, avoid the rapid aging of the current transformer housing, and improve the life of the current transformer. Moreover, since it does not require the width of the copper busbar to be increased to match the diameter of the inner circle of the current transformer in order to fix the current transformer with cable ties, the width of the copper busbar is greatly reduced, further reducing the cost.

[0028] Although this utility model has been described through specific embodiments, those skilled in the art should understand that various modifications and equivalent substitutions can be made to this utility model without departing from its scope. Furthermore, various modifications can be made to this utility model for specific situations or materials without departing from its scope. Therefore, this utility model is not limited to the specific embodiments disclosed, but should include all embodiments falling within the scope of the claims of this utility model.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A current transformer fixing mechanism, characterized in that, It includes a first conical fixing plate, a second conical fixing plate, a copper busbar, and fasteners; The first conical fixing plate, the second conical fixing plate, and the copper busbar are inserted into the arc-shaped mounting hole of the current transformer and fixed by the fixing component; The first conical fixing plate is located on the first side of the copper busbar and abuts against the first end face of the current transformer, and the second conical fixing plate is located on the second side of the copper busbar and abuts against the second end face of the current transformer, so that the current transformer is clamped and fixed on the copper busbar by the first conical fixing plate and the second conical fixing plate.

2. The current transformer fixing mechanism according to claim 1, characterized in that, The first conical fixing plate includes a first rectangular portion and a first isosceles trapezoidal portion extending from the middle of the long side of the first rectangular portion away from the first rectangular portion and decreasing in width; the length of the first rectangular portion is greater than the length of the base of the first isosceles trapezoidal portion, thereby forming a first L-shaped step surface and a second L-shaped step surface between the two sides of the first isosceles trapezoidal portion and the two ends of the first rectangular portion.

3. The current transformer fixing mechanism according to claim 2, characterized in that, The second conical fixing plate includes a second rectangular portion and a second isosceles trapezoidal portion extending from the middle of the long side of the second rectangular portion away from the second rectangular portion and decreasing in width; the length of the second rectangular portion is greater than the length of the base of the second isosceles trapezoidal portion, thereby forming a third L-shaped step surface and a fourth L-shaped step surface between the two sides of the second isosceles trapezoidal portion and the two ends of the second rectangular portion.

4. The current transformer fixing mechanism according to claim 3, characterized in that, The current transformer includes a first main body and a second main body, and the arc-shaped mounting hole is disposed in the center of the first main body and the second main body; The first main body is mounted above the second main body; the second main body includes a first support portion and a second support portion located on both sides of the first end of the arc-shaped mounting hole, and a third support portion and a fourth support portion located on both sides of the second end of the arc-shaped mounting hole.

5. The current transformer fixing mechanism according to claim 4, characterized in that, The base length of the first isosceles trapezoid and the base length of the second isosceles trapezoid are equal to the diameter of the arc-shaped mounting hole; The length of the first rectangular portion is equal to the length of the second rectangular portion and is greater than the diameter of the arc-shaped mounting hole.

6. The current transformer fixing mechanism according to claim 5, characterized in that, When the current transformer is clamped and fixed by the first conical fixing plate and the second conical fixing plate; the first side of the first L-shaped step surface and the first side of the second L-shaped step surface pass through the arc-shaped mounting hole along the first direction, and the first side of the third L-shaped step surface and the first side of the fourth L-shaped step surface pass through the arc-shaped mounting hole along the second direction. The first direction and the second direction are opposite. The first end of the first rectangular portion is located on the first support portion, the second end of the first rectangular portion is located on the second support portion, the first end of the second rectangular portion is located on the third support portion, and the second end of the first rectangular portion is located on the fourth support portion.

7. The current transformer fixing mechanism according to claim 6, characterized in that, The second side of the first L-shaped step surface and the second side of the second L-shaped step surface respectively abut against the first end face of the first main body, and the second side of the third L-shaped step surface and the second side of the fourth L-shaped step surface respectively abut against the second end face of the first main body.

8. The current transformer fixing mechanism according to any one of claims 3 to 7, characterized in that, The first rectangular portion has a first fixing screw hole, the second rectangular portion has a second fixing screw hole, the first isosceles trapezoidal portion has a third fixing screw hole, and the second isosceles trapezoidal portion has a fourth fixing screw hole. The copper busbar is provided with a fifth fixing screw hole and a sixth fixing screw hole; The first fixing screw hole, the third fixing screw hole, and the fifth fixing screw hole are directly opposite each other; The second fixing screw hole, the fourth fixing screw hole, and the sixth fixing screw hole are directly opposite each other.

9. The current transformer fixing mechanism according to claim 8, characterized in that, The fastener includes a first fixing screw and a second fixing screw; The first fixing screw passes through the first fixing screw hole, the third fixing screw hole, and the fifth fixing screw hole, and the second fixing screw passes through the second fixing screw hole, the fourth fixing screw hole, and the sixth fixing screw hole, thereby clamping and fixing the current transformer to the copper busbar by the first tapered fixing plate and the second tapered fixing plate.

10. The current transformer fixing mechanism according to claim 8, characterized in that, The first rectangular portion and the first isosceles trapezoidal portion are integrally formed, the second rectangular portion and the second isosceles trapezoidal portion are integrally formed, and the first conical fixing plate and the second conical fixing plate are insulating plates of the same shape.

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