Mutual inductor installation structure and electric energy meter
By adopting a combined structure of flexible parts and conductive parts on the electric energy meter, the problems of transformer shaking and complex assembly are solved, the stable installation and efficient assembly of the transformer are achieved, and the measurement accuracy of the electric energy meter is guaranteed.
Patent Information
- Application Number
- CN202422572874.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-10-22
AI Technical Summary
In the prior art, the mutual inductor is prone to shaking after being installed on the electric energy meter, resulting in damage, and the assembly operation of the silicone parts is complicated, affecting the assembly efficiency.
A combined structure of flexible parts and conductive parts is adopted. The conductive parts are inserted into the limit holes through the avoidance holes. The mutual inductor is sleeved on the flexible parts and connected by interference fit to avoid direct contact between the conductive parts and the mutual inductor, thus simplifying the assembly steps.
The assembly efficiency of the mutual inductor and the measurement accuracy of the electric energy meter are improved, damage to the mutual inductor by the conductive parts is avoided, and the assembly process of the flexible parts is simplified.
Smart Images
Figure CN223426736U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of electric energy meter, especially relates to a mutual inductor mounting structure and electric energy meter. BACKGROUND
[0002] In order to improve the measurement accuracy of electric energy meter, mutual inductor is generally installed on electric energy meter, mutual inductor is generally sleeved on copper sheet, because the inner diameter of mutual inductor is greater than the width of copper sheet, mutual inductor is easy to shake after installation, leading to mutual inductor damage, therefore, generally, silicone rubber is sleeved on copper sheet, and mutual inductor is sleeved on silicone rubber, to avoid mutual inductor damage by copper sheet, because the existing copper sheet is special-shaped structure, silicone rubber needs to be fixed on copper sheet after winding, and the assembly operation of silicone rubber is complex, which affects the assembly efficiency of mutual inductor. SUMMARY
[0003] The utility model aims at at least one of the technical problems existing in the prior art, and for this purpose, the utility model provides a mutual inductor mounting structure, which can improve the assembly efficiency of mutual inductor.
[0004] The utility model further provides an electric energy meter with the mutual inductor mounting structure.
[0005] According to the mutual inductor mounting structure of the first aspect of the utility model, the mutual inductor mounting structure is used for electric energy meter, and the mutual inductor mounting structure comprises:
[0006] The mutual inductor has a through hole;
[0007] The flexible part is arranged in the through hole and abuts against the inner periphery of the through hole, the flexible part is provided with a limiting hole and a avoiding hole communicating with the limiting hole, and the avoiding hole penetrates to the outer periphery of the flexible part;
[0008] The conductive part is used for electrically connecting with the circuit board of the electric energy meter, the conductive part is arranged in the limiting hole through the avoiding hole, and the conductive part abuts against the side wall of the limiting hole.
[0009] According to the mutual inductor mounting structure of one embodiment of the utility model, at least the following beneficial effects are obtained:
[0010] By arranging the flexible part between the conductive part and the mutual inductor, the conductive part is directly arranged in the limiting hole through the avoiding hole, and the mutual inductor is sleeved on the flexible part, and the flexible part is connected with the mutual inductor in the interference fit mode, on the one hand, the situation that the mutual inductor is damaged by the conductive part can be prevented, so as to ensure the measurement accuracy of the electric energy meter, on the other hand, the assembly steps of the flexible part can be simplified, and the flexible part does not need to be moved and rotated on the conductive part along the length direction of the conductive part, so as to improve the assembly efficiency of the mutual inductor.
[0011] According to some embodiments of the present invention, a rib is provided on the outer circumferential surface of the flexible member, and the rib extends along the circumference of the flexible member, and the rib can abut against the end surface of the mutual inductor.
[0012] According to some embodiments of the present invention, a guide portion is provided on an edge of the flexible member away from the rib, and the distance between the guide portion and the outer peripheral surface of the flexible member gradually decreases in a direction approaching the rib.
[0013] According to some embodiments of the present invention, the flexible part includes a first elastic part, a second elastic part and a connecting part arranged between the first elastic part and the second elastic part. The first elastic part, the second elastic part and the connecting part enclose the limiting hole. The first elastic part and the second elastic part are arranged relative to each other to form the avoidance hole. The first elastic part and the second elastic part can approach or move away from each other.
[0014] According to some embodiments of the present invention, the connecting portion, the first elastic portion, and the second elastic portion are an integrated structure.
[0015] According to some embodiments of the present invention, at least one of the first elastic portion, the second elastic portion and the connecting portion is provided with a groove, and the groove is recessed along the axial direction of the mutual inductor.
[0016] According to some embodiments of the present invention, the flexible member is provided with reinforcing ribs, and the reinforcing ribs are connected to two opposite sides of the groove.
[0017] According to some embodiments of the present invention, along a direction perpendicular to the axial direction of the mutual inductor, the cross-section of the limiting hole is a non-circular structure, and the cross-section of the conductive member is a corresponding non-circular structure.
[0018] According to some embodiments of the present invention, the conductive member is provided with a positioning protrusion, and the positioning protrusion abuts against the periphery of the limiting hole.
[0019] The electric energy meter according to the embodiment of the second aspect of the present utility model includes the mutual inductor installation structure described in the above embodiment.
[0020] The electric energy meter according to the embodiment of the second aspect of the utility model has at least the following beneficial effects:
[0021] The transformer mounting structure of the first aspect embodiment is adopted, by arranging a flexible part between the conductive part and the transformer, the conductive part is directly passed through the avoidance hole to pass through the limit hole, and the transformer is sleeved on the flexible part, and the flexible part is connected to the transformer by an interference fit. On the one hand, it can prevent the transformer from being damaged by the conductive part, thereby ensuring the measurement accuracy of the electric energy meter. On the other hand, it can simplify the assembly steps of the flexible part, and there is no need to move and rotate the flexible part on the conductive part along the length direction of the conductive part, so as to improve the assembly efficiency of the transformer.
[0022] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:
[0024] Figure 1 This is a schematic diagram of the assembly of a mutual inductor installation structure according to an embodiment of the present utility model;
[0025] Figure 2 This is an exploded schematic diagram of a mutual inductor installation structure according to an embodiment of the present utility model;
[0026] Figure 3 This is a structural diagram of a mutual inductor according to an embodiment of the present utility model;
[0027] Figure 4 This is a front view of a mutual inductor installation structure according to an embodiment of the present utility model;
[0028] Figure 5 for Figure 4 Cross-sectional view along line AA;
[0029] Figure 6 for Figure 4 Cross-sectional view along the midline BB;
[0030] Figure 7 for Figure 4 Cross-sectional view along the CC line.
[0031] Figure Number:
[0032] Mutual inductor 100, through hole 101, flexible part 200, limiting hole 201, avoidance hole 202, groove 203, reinforcing rib 204, first elastic part 210, second elastic part 220, connecting part 230, rib 240, guide part 250, conductive part 300, positioning protrusion 301, first conductive segment 310, second conductive segment 320, third conductive segment 330. DETAILED DESCRIPTION
[0033] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.
[0034] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0035] In the description of this utility model, "a plurality" means more than two. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.
[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0037] In related technology, to improve the measurement accuracy of electricity meters, a transformer is typically installed on the meter. The transformer is typically mounted on a copper sheet. Because the transformer's inner diameter is larger than the copper sheet's width, the transformer is prone to shaking after installation, causing damage to the transformer. Therefore, a silicone component is typically mounted on the copper sheet, and the transformer is mounted on the silicone component to prevent damage to the transformer by the copper sheet. Due to the existing copper sheet's irregular structure, the silicone component needs to be twisted before it can be fixed to the copper sheet. This makes the silicone component assembly complex and affects the efficiency of the transformer assembly.
[0038] Based on this, this embodiment sets a flexible part 200 between the conductive part 300 and the mutual inductor 100, and the conductive part 300 is directly inserted into the limiting hole 201 through the avoidance hole 202, and the mutual inductor 100 is sleeved on the flexible part 200. The flexible part 200 is connected to the mutual inductor 100 by an interference fit. On the one hand, it can prevent the mutual inductor 100 from being damaged by the conductive part 300, thereby ensuring the measurement accuracy of the electric energy meter. On the other hand, it can simplify the assembly steps of the flexible part 200, and there is no need to move and rotate the flexible part 200 on the conductive part 300 along the length direction of the conductive part 300, so as to improve the assembly efficiency of the mutual inductor 100.
[0039] In the embodiment, the conductive piece 300 is a copper sheet, the conductive piece 300 comprises a first conductive section 310, a second conductive section 320 and a third conductive section 330 arranged between the first conductive section 310 and the second conductive section 320, the first conductive section 310, the second conductive section 320 and the third conductive section 330 integrally have a U-shaped structure, the first conductive section 310 is oppositely arranged with the second conductive section 320, the first conductive section 310 and the second conductive section 320 are both arranged in a bent mode with the third conductive section 330, the third conductive section 330 is arranged through the limiting hole 201, the first conductive section 310 and the second conductive section 320 are respectively electrically connected with the circuit on the circuit board of the electric energy meter, the conductive piece 300 can reduce the occupied space on the circuit board, so that the space utilization rate of the circuit board is improved.
[0040] With the specific structure of the conductive piece 300 as an example, the assembly mode of the conventional flexible piece 200 is that the first conductive section 310 passes through the limiting hole 201 first, then the flexible piece 200 is rotated, so that the flexible piece 200 passes through the corner between the first conductive section 310 and the third conductive section 330, and then the flexible piece 200 is moved, so that the third conductive section 330 is arranged through the limiting hole 201, since the angle of the corner between the first conductive section 310 and the third conductive section 330 is generally 90°, the flexible piece 200 cannot smoothly pass through the corner between the first conductive section 310 and the third conductive section 330, the installation difficulty of the flexible piece 200 is large, and the assembly efficiency of the flexible piece 200 is low.
[0041] Referring to Figures 1 to 3 , Figure 1 and Figure 2 respectively show an assembly schematic view and an exploded schematic view of the installation structure of the mutual inductor according to an embodiment of the utility model, Figure 3The figure is a schematic diagram of the structure of the flexible part 200 of an embodiment of the present invention. As shown in the figure, in this embodiment, the transformer installation structure includes a transformer 100, a flexible part 200 and a conductive part 300. The internal hollow space of the transformer 100 forms a through hole 101. The flexible part 200 is arranged between the transformer 100 and the conductive part 300. The outer peripheral surface of the flexible part 200 abuts against the inner peripheral surface of the through hole 101. The flexible part 200 is provided with a limiting hole 201 and an avoidance hole 202. The avoidance hole 202 is connected to the limiting hole 201. Along the axial direction of the flexible part 200, the limiting hole 201 and the avoidance hole 202 both pass through the two ends of the flexible part 200. Along the radial direction of the flexible part 200, the avoidance hole 202 passes through the flexible part 201. 00, the conductive part 300 is passed through the limiting hole 201. On the one hand, when installing the flexible part 200, the conductive part 300 directly passes through the avoidance hole 202 and enters the limiting hole 201, which can simplify the assembly steps of the flexible part 200. The flexible part 200 does not need to pass through the first conductive segment 310 and then move to the third conductive segment 330, which can improve the assembly efficiency of the flexible part 200. On the other hand, the conductive part 300 and the transformer 100 can be separated so that the conductive part 300 does not contact the transformer 100, which can prevent the inner surface of the through hole 101 from being damaged by the conductive part 300, thereby ensuring the measurement accuracy of the electric energy meter.
[0042] For example, Figure 3 As shown, along the direction perpendicular to the axial direction of the mutual inductor 100, the avoidance hole 202 and the limiting hole 201 are overall T-shaped structures, the cross-sections of the avoidance hole 202 and the limiting hole 201 are both rectangular, and the length direction of the cross-section of the avoidance hole 202 is perpendicular to the length direction of the cross-section of the limiting hole 201. When installing the flexible part 200, the third conductive segment 330 can be aligned with the avoidance hole 202. Thereafter, the third conductive segment 330 is moved to the connecting position of the avoidance hole 202 and the limiting hole 201, and the flexible part 200 is rotated to allow the third conductive segment 330 to enter the limiting hole 201. The third conductive segment 330 abuts against the side wall of the limiting hole 201, so that the third conductive segment 330 cannot automatically move from the limiting hole 201 to the avoidance hole 202, which can prevent the inner circumference of the through hole 101 from being damaged by the conductive part 300, thereby ensuring the measurement accuracy of the electric energy meter.
[0043] Moreover, after the transformer 100, the flexible part 200 and the conductive part 300 are installed as a whole, the third conductive segment 330 cannot move from the limiting hole 201 to the avoidance hole 202, which can prevent the conductive part 300 from damaging the transformer 100, thereby ensuring the measurement accuracy of the electric energy meter. It will not be described in detail here.
[0044] As another implementation, one end of the length direction of the avoiding hole 202 is connected with one end of the length direction of the limiting hole 201, the avoiding hole 202 and the limiting hole 201 are in an L-shaped structure as a whole, and the third conductive segment 330 can also enter the limiting hole 201 through the avoiding hole 202, which is not limited herein.
[0045] As another implementation, in the direction perpendicular to the axis direction of the mutual inductor 100, the cross section of the limiting hole 201 can also be an elliptical structure, a hexagonal structure, a triangular structure or other non-circular structures, and correspondingly, the cross section of the conductive member 300 is also an elliptical structure, a hexagonal structure, a triangular structure or other non-circular structures, which is not repeated herein.
[0046] It should be noted that the flexible member 200 is made of soft rubber material, which can be rubber or silicone material. On the one hand, the soft rubber material is relatively soft, which can prevent the inner circumferential surface of the through hole 101 from being scratched by the flexible member 200, so as to ensure the measurement accuracy of the electric energy meter. On the other hand, the flexible member 200 is connected with the mutual inductor 100 in an interference fit manner. When the mutual inductor 100 is inserted and fitted with the flexible member 200, the flexible member 200 can be deformed to adapt the outer diameter size of the flexible member 200 to the inner diameter size of the mutual inductor 100, so as to facilitate the mutual inductor 100 to be sleeved on the flexible member 200, thereby limiting the mutual inductor 100 from shaking relative to the flexible member 200.
[0047] It can be understood that the mutual inductor 100 in the embodiment can be a current transformer 100 or a voltage transformer 100, which is not limited herein.
[0048] For example Figure 3 As shown in the drawings, in the embodiment, in the direction perpendicular to the axis direction of the mutual inductor 100, the cross section of the limiting hole 201 is a non-circular structure, and the cross section of the conductive member 300 is a corresponding non-circular structure. The size of the cross section of the limiting hole 201 matches the size of the cross section of the conductive member 300. When the conductive member 300 is arranged in the limiting hole 201, the conductive member 300 can abut against the side wall of the limiting hole 201, so as to limit the flexible member 200 from rotating relative to the conductive member 300, thereby limiting the mutual inductor 100 from rotating relative to the conductive member 300, and improving the safety and stability of the mutual inductor 100.
[0049] Referring to Figures 4 to 7 , Figure 4 is a front view of the mutual inductor installation structure of an embodiment of the utility model, Figure 5 is Figure 4 a sectional view of line A-A in Figure 6 is Figure 4 a sectional view of line B-B in Figure 7 is Figure 4Cross-sectional view taken along line CC. As shown in the figure, in this embodiment, the flexible member 200 includes a first elastic portion 210, a second elastic portion 220, and a connecting portion 230. One side of the connecting portion 230 is connected to the first elastic portion 210, and the other side of the connecting portion 230 is connected to the second elastic portion 220. The first elastic portion 210, the second elastic portion 220, and the connecting portion 230 enclose a limiting hole 201, and the first elastic portion 210 and the second elastic portion 220 are arranged relative to each other to form an avoidance hole 202. When the conductive member 300 enters the limiting hole 201 from the avoidance hole 202, due to the matching cross-sectional dimensions of the limiting hole 201 and the conductive member 300, there is a certain interference between the conductive member 300 and the sidewall of the limiting hole 201. By providing the first elastic portion 210 and the second elastic portion 220, the width of the limiting hole 201 can be elastically expanded to reduce the interference between the conductive member 300 and the sidewall of the limiting hole 201, thereby facilitating the installation of the flexible member 200.
[0050] It should be noted that, since the flexible member 200 is made of soft rubber material, the material of the soft rubber material itself has a certain elasticity. Taking the avoidance hole 202 and the limiting hole 201 as an example of a T-shaped structure as a whole, when installing the flexible member 200, one side of the conductive member 300 enters the limiting hole 201 near the first elastic portion 210 from the avoidance hole 202. At this time, the first elastic portion 210 is stretched open, and the minimum distance between the first elastic portion 210 and the second elastic portion 220 increases. After the conductive member 300 is moved into place, the flexible member 200 is rotated relative to the conductive member 300 so that the other side of the conductive member 300 is extended from the avoidance hole. 202 enters the end of the limiting hole 201 close to the second elastic part 220. At this time, the second elastic part 220 is stretched, and the minimum distance between the first elastic part 210 and the second elastic part 220 is increased, which can facilitate the conductive part 300 to pass through the avoidance hole 202 and enter the limiting hole 201. When the conductive part 300 is inserted into the limiting hole 201, the first elastic part 210 and the second elastic part 220 rebound, and the first elastic part 210 and the second elastic part 220 are both bounded by the conductive part 300 to limit the conductive part 300 from shaking in the limiting hole 201, which can improve the installation stability of the transformer 100.
[0051] It can be understood that when the mutual inductor 100 and the flexible part 200 are interference fit, since the flexible part 200 is made of soft rubber material, the inner circumference of the through hole 101 can squeeze the first elastic part 210, the second elastic part 220 and the connecting part 230 to cause deformation. On the one hand, it can ensure that the side wall of the limiting hole 201 is in contact with the conductive part 300. On the other hand, it can limit the movement of the first elastic part 210 and the second elastic part 220 in a direction away from each other, so that the conductive part 300 can be stably installed in the limiting hole 201, which can improve the installation stability of the mutual inductor 100.
[0052] For exampleFigure 3 、 Figure 4 and Figure 7 As shown in FIGS. 13, 14 and 15, in the embodiment, the grooves 203 are arranged on the first elastic part 210, the second elastic part 220 and the connecting part 230, and are recessed along the axial direction of the mutual inductor 100. On the one hand, the grooves 203 can save the material cost of the flexible part 200 and reduce the weight of the flexible part 200. On the other hand, the deformation of the first elastic part 210, the second elastic part 220 and the connecting part 230 can be increased. When the conductive part 300 abuts against the first elastic part 210, the second elastic part 220 or the connecting part 230, the cross section of the corresponding groove 203 is reduced to reduce the interference between the conductive part 300 and the flexible part 200, and the flexible part 200 can be conveniently installed.
[0053] For example, when one side of the conductive part 300 enters the end of the limiting hole 201 close to the first elastic part 210 along the avoiding hole 202, the conductive part 300 abuts against the first elastic part 210 and the connecting part 230 respectively. At this time, the groove 203 on the first elastic part 210 and the groove 203 on the connecting part 230 are deformed, and the cross section of the groove 203 on the first elastic part 210 and the groove 203 on the connecting part 230 is reduced to reduce the interference between the conductive part 300 and the flexible part 200, so that one side of the conductive part 300 can smoothly enter the end of the limiting hole 201 close to the first elastic part 210 along the avoiding hole 202. Then, the flexible part 200 is rotated, the other side of the conductive part 300 abuts against the second elastic part 220, the groove 203 on the second elastic part 220 is deformed, and the groove 203 on the second elastic part 220 is reduced, so that the other side of the conductive part 300 can smoothly enter the end of the limiting hole 201 close to the second elastic part 220, and the flexible part 200 can be conveniently installed.
[0054] It should be noted that the grooves 203 can also be arranged on any two of the first elastic part 210, the second elastic part 220 and the connecting part 230, i.e., the first elastic part 210 and the second elastic part 220 are provided with the grooves 203, or the first elastic part 210 and the connecting part 230 are provided with the grooves 203, or the second elastic part 220 and the connecting part 230 are provided with the grooves 203, which is not limited herein.
[0055] It should be noted that the grooves 203 can also be arranged on any one of the first elastic part 210, the second elastic part 220 and the connecting part 230, which is not limited herein.
[0056] In this embodiment, the first elastic part 210, the second elastic part 220 and the connecting part 230 are all provided with reinforcing ribs 204, and the reinforcing ribs 204 are arranged in the corresponding grooves 203. One side of the reinforcing rib 204 is connected to the side of the groove 203 close to the limiting hole 201, and the other opposite side of the reinforcing rib 204 is connected to the side of the groove 203 away from the limiting hole 201. By providing the reinforcing ribs 204, the structural strength of the flexible part 200 can be improved, thereby improving the service life of the flexible part 200.
[0057] It should be noted that the number of reinforcing ribs 204 is positively correlated with the cross-sectional area of the groove 203, that is, the larger the cross-sectional area of the groove 203, the more reinforcing ribs 204 are required. Figure 3 、 Figure 4 As shown, the cross-sectional area of the groove 203 located on the first elastic part 210 is smaller than the cross-sectional area of the groove 203 located on the connecting part 230, the cross-sectional area of the groove 203 located on the second elastic part 220 is smaller than the cross-sectional area of the groove 203 located on the connecting part 230, and there are three reinforcing ribs 204 located on the connecting part 230, and there is one reinforcing rib 204 located on the first elastic part 210 and one reinforcing rib 204 located on the second elastic part 220, which can ensure the structural strength of the flexible part 200.
[0058] It should be pointed out that in the length direction of the limiting hole 201, the reinforcing ribs 204 located on the first elastic part 210 and the reinforcing ribs 204 located on the second elastic part 220 are staggered with the reinforcing ribs 204 located on the connecting part 230, so that the reinforcing ribs 204 located on the first elastic part 210, the reinforcing ribs 204 located on the second elastic part 220 and the reinforcing ribs 204 located on the connecting part 230 can support different positions of the third conductive segment 330, so as to improve the installation stability of the third conductive segment 330 in the limiting hole 201.
[0059] In this embodiment, the first elastic portion 210 , the second elastic portion 220 and the connecting portion 230 are an integrated structure, which can reduce the number of molds, thereby reducing the production cost of the molds and thus reducing the production cost of the flexible member 200 .
[0060] For example, the first elastic portion 210 , the second elastic portion 220 and the connecting portion 230 are integrally formed by injection molding. The flexible component 200 is a soft plastic component structure, which is durable and can increase the service life of the flexible component 200 .
[0061] As another embodiment, the first elastic portion 210, the second elastic portion 220 and the connecting portion 230 may be connected by welding, wherein the welding method includes but is not limited to resistance welding, laser welding or ultrasonic welding, etc., which are not limited here.
[0062] In this embodiment, the outer peripheral surface of the flexible member 200 is connected to a rib 240, which extends along the circumference of the flexible member 200. When the transformer 100 is sleeved on the flexible member 200, the rib 240 can block at least part of the end face of the transformer 100 to protect the end face of the transformer 100 from being damaged, thereby ensuring the measurement accuracy of the electric energy meter.
[0063] It should be noted that the first elastic part 210, the second elastic part 220 and the connecting part 230 are all connected to the retaining edge 240, which can not only improve the connection strength between the connecting part 230 and the first elastic part 210, but also improve the connection strength between the connecting part 230 and the second elastic part 220, and can reduce the occurrence of disconnection between the first elastic part 210 and the connecting part 230, and reduce the occurrence of disconnection between the second elastic part 220 and the connecting part 230, thereby improving the service life of the flexible part 200.
[0064] As another embodiment, a plurality of ribs 240 may be provided, and the plurality of ribs 240 are spaced apart along the circumference of the flexible member 200 and can also shield at least a portion of the end face of the transformer 100 , which is not limited here.
[0065] For example Figure 1 、 Figure 2 As shown, in this embodiment, two positioning protrusions 301 are provided on the conductive member 300, one of the two positioning protrusions 301 is provided on one side of the width direction of the conductive member 300, and the other is provided on the other side of the width direction of the conductive member 300. In the width direction of the conductive member 300, the positioning protrusion 301 is extended in a direction away from the conductive member 300, and the positioning protrusion 301 abuts against the periphery of the limiting hole 201. On the one hand, the position of the transformer 100 on the conductive member 300 can be positioned to facilitate the installation of the transformer 100. On the other hand, the positioning protrusion 301 can be prevented from contacting the end face of the transformer 100 to prevent the end face of the transformer 100 from being damaged by the positioning protrusion 301, thereby ensuring the measurement accuracy of the electric energy meter.
[0066] It should be noted that, when the cross-section of the limiting hole 201 is rectangular along the direction perpendicular to the axial direction of the transformer 100, the third width direction refers to the length direction of the cross-section of the limiting hole 201, the thickness direction of the conductive part 300 refers to the width direction of the cross-section of the limiting hole 201, and the length direction of the conductive part 300 refers to the axial direction of the transformer 100.
[0067] It should be noted that the positioning protrusion 301 may also be provided in the thickness direction of the conductive member 300 , and the positioning protrusion 301 extends in a direction away from the conductive member 300 .
[0068] As another embodiment, one positioning protrusion 301 may be provided. In this case, the positioning protrusion 301 is provided on one side of the width direction of the conductive member 300 , which is not limited here.
[0069] As another embodiment, the positioning protrusion 301 and the conductive member 300 may be an integrated structure, and the positioning protrusion 301 may also be fixed to the conductive member 300 by welding, wherein the welding method includes but is not limited to resistance welding, laser welding or ultrasonic welding.
[0070] Of course, in other specific embodiments, the positioning protrusion 301 can also be replaced by a positioning ring, which is sleeved on the conductive part 300 and connected to the conductive part 300 by welding. The positioning ring can also abut against the periphery of the limiting hole 201, which will not be described in detail here.
[0071] For example Figure 3 As shown, in this embodiment, in order to facilitate the installation of the transformer 100 on the flexible member 200, a guide portion 250 is provided at one end of the flexible member 200 away from the retaining edge 240. The guide portion 250 is configured as a chamfered structure. In the direction approaching the retaining edge 240, the distance between the guide portion 250 and the outer peripheral surface of the flexible member 200 gradually decreases, which can guide the flexible member 200 into the interior of the transformer 100 to facilitate the installation of the transformer 100, thereby improving the assembly efficiency of the transformer 100.
[0072] As another embodiment, the guide portion 250 may also be replaced with a rounded structure that can guide the flexible member 200 into the interior of the transformer 100 , and this is not limited here.
[0073] The electric energy meter of the second embodiment of the present utility model includes the mutual inductor installation structure of the above embodiment.
[0074] The electric energy meter of the second embodiment of the present invention adopts the mutual inductor mounting structure of the first embodiment, by arranging the flexible part 200 between the conductive part 300 and the mutual inductor 100, the conductive part 300 is directly passed through the avoidance hole 202 and is arranged in the limit hole 201, and the mutual inductor 100 is sleeved on the flexible part 200, and the flexible part 200 is connected to the mutual inductor 100 by an interference fit. On the one hand, it can prevent the mutual inductor 100 from being damaged by the conductive part 300, thereby ensuring the measurement accuracy of the electric energy meter. On the other hand, it can simplify the assembly steps of the flexible part 200, and there is no need to move and rotate the flexible part 200 on the conductive part 300 along the length direction of the conductive part 300, so as to improve the assembly efficiency of the mutual inductor 100.
[0075] Since the electric energy meter adopts all the technical solutions of the transformer installation structure of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be repeated here.
[0076] The utility model makes a detailed description to one embodiment of the utility model in combination with the drawings, but the utility model is not limited to the above embodiment, still can make various changes in the knowledge range of the ordinary skill of the person skilled in the art without departing from the utility model's tenet.
Claims
1. A transformer installation structure for an electric energy meter, characterized in that: include: A mutual inductor having a through hole; a flexible member, passing through the through hole and abutting against the inner circumference of the through hole, the flexible member being provided with a limiting hole and an avoidance hole communicating with the limiting hole, the avoidance hole penetrating to the outer circumference of the flexible member; A conductive member is used to be electrically connected to the circuit board of the electric energy meter. The conductive member is inserted into the limiting hole through the avoidance hole, and the conductive member abuts against the side wall of the limiting hole.
2. The mutual inductor installation structure according to claim 1, characterized in that: The outer peripheral surface of the flexible member is provided with a rib, which is extended along the circumference of the flexible member and is used to abut against the end surface of the mutual inductor.
3. The mutual inductor installation structure according to claim 2, characterized in that: A guide portion is provided on an edge of the flexible member away from the rib, and a distance between the guide portion and the outer peripheral surface of the flexible member gradually decreases in a direction approaching the rib.
4. The mutual inductor installation structure according to claim 1, characterized in that: The flexible part includes a first elastic part, a second elastic part and a connecting part arranged between the first elastic part and the second elastic part. The first elastic part, the second elastic part and the connecting part enclose the limiting hole. The first elastic part and the second elastic part are arranged relative to each other to form the avoidance hole. The first elastic part and the second elastic part can approach or move away from each other.
5. The mutual inductor installation structure according to claim 4, characterized in that: The connecting portion, the first elastic portion, and the second elastic portion are an integrated structure.
6. The mutual inductor installation structure according to claim 4, characterized in that: At least one of the first elastic portion, the second elastic portion and the connecting portion is provided with a groove, and the groove is recessed along the axial direction of the mutual inductor.
7. The mutual inductor installation structure according to claim 6, characterized in that: The flexible member is provided with reinforcing ribs, and the reinforcing ribs are connected to two opposite sides of the groove.
8. The mutual inductor installation structure according to claim 1, characterized in that: Along a direction perpendicular to the axial direction of the mutual inductor, the cross section of the conductive member is a non-circular structure, and the cross section of the limiting hole is a corresponding non-circular structure.
9. The mutual inductor installation structure according to claim 1, characterized in that: The conductive member is provided with a positioning protrusion, and the positioning protrusion abuts against the periphery of the limiting hole.
10. Electric energy meter, characterized by: The invention comprises the mutual inductor installation structure according to any one of claims 1 to 9.