A wiring structure of a mutual inductor

Abstract

The utility model discloses a kind of wiring structure of mutual inductor, comprising: shell includes upper cover and base, upper cover and base cooperate to form fixed groove;Terminal includes outer fixed part, connecting part, inner fixed part and extension, outer fixed part is connected with inner fixed part by connecting part, extension is connected with inner fixed part, inner fixed part and extension are housed in fixed groove;Terminal includes fixed hole, fixed hole penetrates outer fixed part, connecting part, inner fixed part;This structure is set, by inner fixed part and extension cooperation, the connecting fixed effect between terminal and fixed groove is formed, so that terminal and shell are independently set, it is convenient to weld connection, installation fixed, and in external wiring process, terminal also cannot occur to turn, slip phenomenon, improve the stability of connection, and processing efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, specifically to a wiring structure for a current transformer. Background Technology

[0002] A current transformer specifically refers to a current transformer, which includes an iron core and windings. The iron core and windings work together to achieve a current detection effect.

[0003] In existing technologies, such as the Chinese utility model patent with publication number "CN209880360U" entitled "A Novel Terminal Block for a Current Transformer," a terminal block is disclosed. This terminal block is formed by casting to the housing to prevent it from spinning during wiring. However, this processing method results in the terminal block not being located at the connection between the top cover and the base (the terminal block can only be cast with the top cover or the base), affecting the convenience of subsequent wiring. Moreover, in this processing method, the terminal block is fixed, and the electrical connection between the winding and the terminal block needs to be welded. The angle and position of the welder are limited, reducing welding efficiency (the processing technology requires casting before welding; otherwise, the welding stability between the winding and the terminal block will be affected during casting). Those skilled in the art have also used methods to directly fix the terminal block by setting fixing grooves in the top cover and the base. However, due to the limited size of the first and second square bodies, spinning still occurs during wiring, seriously affecting the actual wiring effect. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is how to improve the connection and fixing effect between the wiring terminals and the transformer housing. A wiring structure for a current transformer includes:

[0005] A housing, the housing including a top cover and a base, the top cover and the base cooperating to form a fixing groove;

[0006] The terminal block includes an outer fixing part, a connecting part, an inner fixing part, and an extension part. The outer fixing part is connected to the inner fixing part through the connecting part, and the extension part is connected to the inner fixing part. The inner fixing part and the extension part are accommodated in the fixing groove. The terminal block includes a fixing hole that penetrates the outer fixing part, the connecting part, and the inner fixing part.

[0007] The number of extensions is one, and the extension is connected to the top surface of the internal fixation part; or, the number of extensions is one, and the extension is connected to the bottom surface of the internal fixation part.

[0008] The number of extensions is two, one of which is connected to the top surface of the internal fixation part, and the other of which is connected to the bottom surface of the internal fixation part.

[0009] The extension or the inner fixing part is provided with a hanging ear, and the hanging ear is provided with a through hole.

[0010] The loop is located at the end of the extension that is away from the inner fixing part.

[0011] The ear loop is formed by bending.

[0012] The fixing hole is a screw hole.

[0013] The wiring terminal is formed by stamping.

[0014] The technical solution of this utility model has the following advantages:

[0015] 1. The present invention provides a wiring structure for a current transformer. This structure, through the cooperation of the inner fixing part and the extension part, forms a connection and fixing effect between the wiring terminal and the fixing groove, so that the wiring terminal and the housing are set independently of each other, which facilitates welding wiring and installation and fixing. Moreover, during the external wiring process, the wiring terminal will not rotate or slip, thus improving the stability of the wiring.

[0016] 2. The wiring structure of the current transformer provided by this utility model can improve the stability of the connection and fixation by connecting the extension part and the inner fixing part at different positions, and prevent the phenomenon of rotation and slippage.

[0017] 3. The wiring structure of the current transformer provided by this utility model, with the setting of two extension parts, further improves the stability of the connection and fixation, and prevents the occurrence of spinning or slippage.

[0018] 4. The wiring structure of the current transformer provided by this utility model has a lug and a through hole, which facilitates the welding of the winding. When welding is required, the end of the winding is passed through the through hole and then welded with solder wire to achieve the effect of welding and fixing.

[0019] 5. The wiring structure of the current transformer provided by this utility model has a fixed position of the hanging ear, so that after fixing, the hanging ear will not interfere with the subsequent external wiring and form a misaligned structure.

[0020] 6. The wiring structure of the current transformer provided by this utility model is integrally formed by stamping. Compared with the machining method used in the prior art, stamping can improve the processing efficiency and make the processing more convenient. Attached Figure Description

[0021] 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.

[0022] Figure 1 A schematic diagram of the wiring structure of a current transformer provided by this utility model;

[0023] Figure 2 A cross-sectional view of the wiring structure of a current transformer provided by this utility model;

[0024] Figure 3 A cross-sectional view of another form of the wiring structure of a current transformer provided by this utility model;

[0025] Figure 4 A cross-sectional view of another form of the wiring structure of a current transformer provided by this utility model;

[0026] Figure 5 A schematic diagram of the wiring terminal provided by this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 11. Housing; 12. Terminal block; 111. Top cover; 112. Base; 113. Fixing groove; 114. Through hole; 121. External fixing part; 122. Connecting part; 123. Internal fixing part; 124. Extension part; 125. Fixing hole; 126. Hanging ear; 127. Through hole. Detailed Implementation

[0029] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0033] Example 1

[0034] This embodiment provides a wiring structure for a current transformer, as shown in the attached diagram. Figures 1-5 As shown, it includes:

[0035] The housing 11 includes a top cover 111 and a base 112. The top cover 111 and the base 112 cooperate to form a fixing groove 113. A portion of the fixing groove 113 is located on the inner wall of the top cover 111, and the other portion is located on the inner wall of the base 112. The two are connected to form the fixing groove 113. The connection point between the top cover 111 and the base 112 is at the center of the fixing groove 113, thus achieving vertical symmetry. The top cover 111 and the base 112 also form a through hole 114, which communicates with the fixing groove 113. In addition, the housing 11 also has a chamber for fixing the iron core and windings; this is prior art and will not be described in detail in this embodiment.

[0036] The terminal block 12 includes an outer fixing part 121, a connecting part 122, an inner fixing part 123, and an extension part 124. The outer fixing part 121 is connected to the inner fixing part 123 via the connecting part 122, and the extension part 124 is connected to the inner fixing part 123. The inner fixing part 123 and the extension part 124 are accommodated in a fixing groove 113. In this embodiment, part of the terminal block 12 is located inside the housing 11, and the remaining part of the terminal block 12 extends through the housing 11 to the outside of the housing 11. Specifically, the connecting part 122 passes through the through hole 114, and the outer fixing part 121 is located outside the housing 11. The terminal block 12 includes a fixing hole 125, which penetrates the outer fixing part 121, the connecting part 122, and the inner fixing part 123. When an external wire or external conductive component is attached to the outer fixing part 121, it is connected and fixed by a bolt through the external wire or external conductive component to the fixing hole 125, thereby achieving an electrical connection between the external circuit and the terminal block 12. This structural design, through the cooperation of the inner fixing part 123 and the extension part 124, forms a connection and fixation effect between the terminal block 12 and the fixing groove 113, so that the terminal block 12 and the housing 11 are set independently of each other, which facilitates welding wiring and installation and fixation. Moreover, during the external wiring process, the terminal block 12 will not rotate or slip, thus improving the stability of the wiring.

[0037] Specifically, as shown in the attached document Figures 2-3 As shown, there is one extension 124, which connects to the top surface of the inner fixing part 123. The extension 124 extends vertically upwards and is fixed to the inner wall of the upper cover 111 to prevent spinning or slipping. Alternatively, there is one extension 124, which connects to the bottom surface of the inner fixing part 123. In this case, the extension 124 is fixed to the inner wall of the base 112 to prevent spinning or slipping. The different connections between the extension 124 and the inner fixing part 123 all improve the stability of the connection and prevent spinning or slipping.

[0038] Specifically, as shown in the attached document Figures 4-5 As shown, there are two extensions 124. One extension 124 is connected to the top surface of the inner fixing part 123, and the other extension 124 is connected to the bottom surface of the inner fixing part 123. The two extensions 124 are connected to the upper and lower ends of the inner fixing part 123 respectively, forming a vertical fixing effect. The upper extension 124 extends to mate with the inner wall of the upper cover 111, and the lower extension 124 extends to mate with the inner wall of the base 112. The two extensions 124 further improve the stability of the connection and fixation, preventing rotation and slippage.

[0039] Specifically, as shown in the attached document Figures 2-5As shown, the extension 124 and the inner fixing part 123 are coplanar, that is, the extension 124 is located in the extension direction of the inner fixing part 123, and the side of the extension 124 and the corresponding side of the inner fixing part 123 are coplanar. For example, the front side of the extension 124 and the front side of the inner fixing part 123 are coplanar.

[0040] Specifically, the cross-sectional area of ​​the connecting part 122 is smaller than the cross-sectional area of ​​the outer fixing part 121 and the cross-sectional area of ​​the inner fixing part 123, forming a structure that is small in the middle and large at both ends, preventing the terminal block 12 from moving back and forth. Here, the size of the connecting part 122 is adapted to the through hole 114, forming a limiting effect. Furthermore, a limiting surface can also be provided on the inner wall of the through hole 114 to limit the rotation of the connecting part 122.

[0041] Specifically, as shown in the attached document Figures 2-5 As shown, the extension 124 or the inner fixing part 123 is provided with a lug 126, and the lug 126 is provided with a through hole 127. The lug 126 and the through hole 127 facilitate the welding of the winding. When welding is required, the end of the winding is passed through the through hole 127 and then welded with solder wire to achieve the effect of welding and fixing.

[0042] Specifically, as shown in the attached document Figures 2-5 As shown, the lug 126 is located at the end of the extension 124 away from the inner fixing part 123. The position of the lug 126 is limited so that after fixing, the lug 126 will not interfere with subsequent external wiring, thus avoiding a misaligned structure. Here, the lug 126 is connected to the bottom end of the lower extension 124, in which case the lug 126 and the extension 124 are vertically connected. Alternatively, the lug 126 can also be connected to the extension 124 at an angle. The lug 126 can also be provided on the fixing part 123, but space must be considered.

[0043] Specifically, the lug 126 is formed by bending. Bending makes processing more convenient, as the effect of stamping and bending can be achieved through stamping.

[0044] Specifically, fixing hole 125 is a screw hole.

[0045] Specifically, the terminal block 12 is integrally formed by stamping. Compared with the machining method used in the prior art, stamping can improve processing efficiency and make processing more convenient. That is to say, the fixing part, the connecting part 122, the inner fixing part 123, the extension part 124, and the lug 126 are all formed by stamping.

[0046] Specifically, terminal 12 is made of metal, such as copper or copper alloy.

[0047] Specifically, in this embodiment, a housing 11 can be used to install and fix two wiring terminals 12, or more wiring terminals can be installed and fixed. Those skilled in the art can adjust this according to actual needs.

[0048] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A wiring structure for a current transformer, characterized in that, include: The housing (11) includes a top cover (111) and a base (112), wherein the top cover (111) and the base (112) cooperate to form a fixing groove (113); The terminal block (12) includes an outer fixing part (121), a connecting part (122), an inner fixing part (123), and an extension part (124). The outer fixing part (121) is connected to the inner fixing part (123) through the connecting part (122), and the extension part (124) is connected to the inner fixing part (123). The inner fixing part (123) and the extension part (124) are accommodated in the fixing groove (113). The terminal block (12) includes a fixing hole (125) that passes through the outer fixing part (121), the connecting part (122), and the inner fixing part (123).

2. The wiring structure of the current transformer according to claim 1, characterized in that, The number of the extension (124) is one, and the extension (124) is connected to the top surface of the inner fixing part (123); or, the number of the extension (124) is one, and the extension (124) is connected to the bottom surface of the inner fixing part (123).

3. The wiring structure of the current transformer according to claim 1, characterized in that, There are two extensions (124), one of which is connected to the top surface of the inner fixing part (123), and the other of which is connected to the bottom surface of the inner fixing part (123).

4. The wiring structure of the current transformer according to claim 1, characterized in that, The extension (124) or the inner fixing part (123) is provided with a hanging ear (126), and the hanging ear (126) is provided with a through hole (127).

5. The wiring structure of the current transformer according to claim 4, characterized in that, The lug (126) is located at the end of the extension (124) away from the inner fixing part (123).

6. The wiring structure of the current transformer according to claim 4 or 5, characterized in that, The lug (126) is formed by bending.

7. The wiring structure of the current transformer according to claim 1, characterized in that, The fixing hole (125) is a screw hole.

8. The wiring structure of the current transformer according to claim 1, characterized in that, The terminal block (12) is formed by stamping.

Images