Accurate positioning structure for copper bar wire pin assembly of current sensor

Abstract

The utility model relates to the technical field of current sensors, in particular to a current sensor copper bar wire pin assembly accurate positioning structure, which comprises a plastic shell, the bottom of the plastic shell is fixedly connected with a bottom shell, the bottom of the bottom shell is provided with a conical hole, and the inner part of the conical hole is movably connected with a cylindrical copper bar. According to the accurate positioning structure for assembling the copper bar wire leg of the current sensor, the hole site of the plastic shell is designed to be conical, so that the central axis of the cone is consistent with the central axis of the copper bar wire leg, the accurate positioning of the copper bar wire leg can be realized and completed, meanwhile, the copper bar and the plastic shell are combined more tightly, and the assembling precision of the copper bar wire leg is improved. And the upper surface of the conical hole site of the plastic shell is in clearance fit with the copper bar wire leg, and the lower surface of the conical hole site is in interference fit with the copper bar wire leg, so that the assembly of the copper bar wire leg is facilitated, the axis position of the copper bar wire leg is fixed, and the central axis of the plastic hole site is ensured to be consistent with the central axis of the copper bar wire leg.

Description

Technical Field

[0001] The utility model relates to the technical field of current sensors, in particular to a precise positioning structure for assembling copper busbar pins of current sensors. Background Art

[0002] There are two main ways to install the copper busbar of current sensors. One is to assemble the bent copper busbar into a plastic shell with cylindrical holes. The advantage of this copper busbar assembly method is that the number of copper busbars can be freely configured and the copper busbar can be removed. Another way to install the copper busbar is to place it into the plastic shell during injection molding. The advantage of this method is that the position of the copper busbar pins is precise.

[0003] In the existing structure, there is generally an assembly gap between the plastic cylindrical hole and the copper busbar. This assembly gap increases the position tolerance of the copper busbar pins on the one hand, and makes the copper busbar and the plastic shell less tightly connected on the other hand, making the copper busbar easy to move or even loose. On the other hand, if the copper busbar and the plastic hole are matched with a zero fit or interference fit, the copper busbar assembly is more difficult, and the hole of the plastic shell will have the risk of cracking due to elastic deformation. The copper busbar cannot be removed in the second installation method, and it is not convenient for customers to freely configure the number of copper busbars according to product needs. In addition, the mold cost and the cost of plastic parts of this injection molding method need to be increased. For this reason, we propose a new precise positioning structure for the assembly of the copper busbar pins of the current sensor. Utility Model Content

[0004] The purpose of the present utility model is to provide a precise positioning structure for assembling the copper busbar pins of a current sensor, so as to solve the problem that, in the existing structure proposed in the above-mentioned background technology, there is generally an assembly gap between the plastic cylindrical hole and the copper busbar. This assembly gap, on the one hand, increases the position tolerance of the copper busbar pins, and on the other hand, makes the copper busbar and the plastic shell less tightly connected, and the copper busbar is easy to move or even loosen; on the other hand, if the copper busbar and the plastic hole are matched with a zero fit or an interference fit, the assembly of the copper busbar is more difficult, and the hole of the plastic shell may have the risk of cracking due to elastic deformation; the copper busbar cannot be disassembled in the second installation method, and it is not convenient for customers to freely configure the number of copper busbars according to product needs. In addition, the mold cost and the cost of plastic parts of this injection molding method need to be increased. To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a precise positioning structure for assembling the copper busbar pins of a current sensor, comprising a plastic shell, the bottom of which is fixedly connected to a bottom shell, the bottom of which is provided with a conical hole, a cylindrical copper busbar being movably connected inside the conical hole, and the hole of the plastic shell being designed into a conical shape so that the central axis of the cone is consistent with the central axis of the copper busbar pin, thereby facilitating and completing the precise positioning of the copper busbar pin and making the copper busbar and the plastic shell more tightly coupled, making it less likely to move or even loosen; the conical hole of the plastic shell has a clearance fit with the copper busbar pin on the top and an interference fit with the copper busbar pin on the bottom, which not only facilitates the assembly of the copper busbar pin, but also fixes the axial position of the copper busbar pin and helps ensure that the central axis of the plastic hole is consistent with the central axis of the copper busbar pin.

[0005] Further preferably, the top of the bottom shell is movably connected to an upper cover, and a through hole is opened on the top of the upper cover. The staff inserts the cylindrical copper busbar from the upper cover into the conical hole through the through hole, which helps to provide guidance for the cylindrical copper busbar.

[0006] Further preferably, a control groove is provided on the top of the upper cover, and the interior of the control groove is movably connected to the cylindrical copper busbar. The design of the control groove on the plastic shell enables the middle position of the cylindrical copper busbar to be assembled into the control groove on the plastic shell, which helps to ensure the protruding length of the cylindrical copper busbar wire legs by controlling the height of the control groove.

[0007] Further preferably, an open slot is provided on one side of the bottom of the conical hole, and the side surface of the cylindrical copper busbar is movably connected to the interior of the through hole. By designing the open slot near the hole of the plastic housing, the elastic deformation of the plastic hole is increased, so that the elastic deformation of the plastic can be increased when the cylindrical copper busbar is assembled under the conical hole of the plastic housing, thereby avoiding the risk of cracking of the plastic hole due to excessive elastic deformation of the plastic hole.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] In the utility model, the hole of the plastic shell is designed to be conical, so that the central axis of the cone is consistent with the central axis of the copper busbar pin, which helps to achieve and complete the precise positioning of the copper busbar pin and at the same time makes the combination of the copper busbar and the plastic shell tighter, making it difficult to move or even loosen. The upper surface of the conical hole of the plastic shell and the copper busbar pin are clearance fit, and the lower surface of the conical hole and the copper busbar pin are interference fit, which not only facilitates the assembly of the copper busbar pin, but also fixes the axial position of the copper busbar pin and helps to ensure that the central axis of the plastic hole is consistent with the central axis of the copper busbar pin.

[0010] In the present invention, the design of the open slots opened near the holes of the plastic housing increases the elastic deformation of the plastic holes, so that when the cylindrical copper busbar is assembled under the conical holes of the plastic housing, the plastic can have a certain elastic deformation, thereby avoiding the risk of cracking of the plastic holes due to excessive elastic deformation.

[0011] In the present invention, the copper busbar can be disassembled by the cooperation between the conical hole and the cylindrical copper busbar, so that customers can freely configure the number of copper busbars according to product needs without increasing the cost of plastic molds and plastic parts.

[0012] In the utility model, the design of the control groove on the plastic shell helps to ensure the extended length of the cylindrical copper busbar legs by controlling the height of the groove when the middle position of the cylindrical copper busbar is assembled into the control groove on the plastic shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 ;

[0014] Figure 2 This is an enlarged three-dimensional structure diagram of the local details of the utility model Figure 1 ;

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 ;

[0016] Figure 4 This is a schematic diagram of the three-dimensional structure of the utility model Figure 3 ;

[0017] Figure 5 This is an enlarged three-dimensional structure diagram of the local details of the utility model Figure 2 .

[0018] In the figure: 1. Plastic shell; 2. Bottom shell; 3. Conical hole; 4. Cylindrical copper busbar; 5. Top cover; 6. Through hole; 7. Control slot; 8. Opening slot. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 5 The utility model provides a technical solution: a precise positioning structure for assembling the copper busbar pins of a current sensor, comprising a plastic shell 1, the bottom of the plastic shell 1 being fixedly connected to a bottom shell 2, a conical hole 3 being opened at the bottom of the bottom shell 2, a cylindrical copper busbar 4 being movably connected inside the conical hole 3, a worker inserts the cylindrical copper busbar 4 into the through hole 6, passes through the upper cover 5 and is thereby inserted into the conical hole 3 inside the bottom shell 2, thereby inserting the cylindrical copper busbar 4 into the plastic shell 1, the central axis of the conical hole 3 being consistent with the central axis of the copper busbar pin, thereby realizing and completing the precise positioning of the copper busbar pin.

[0021] In this embodiment, Figure 1 、 Figure 2 and Figure 3 As shown, the top of the bottom shell 2 is movably connected to the upper cover 5, the top of the upper cover 5 is provided with a through hole 6, the top of the upper cover 5 is provided with a control groove 7, the interior of the control groove 7 is movably connected to the cylindrical copper busbar 4, when the cylindrical copper busbar 4 is inserted into the conical hole 3, the middle position of the copper busbar is assembled into the control groove 7 on the plastic shell 1, and the height of the control groove 7 is guaranteed to ensure the extended length of the legs of the cylindrical copper busbar 4.

[0022] In this embodiment, Figure 1 、 Figure 4 and Figure 5 As shown, an open slot 8 is provided on one side of the bottom of the conical hole 3, and the side surface of the cylindrical copper busbar 4 is movably connected to the inside of the through hole 6. The open slot 8 is provided near the hole of the plastic housing 1, which increases the elastic deformation of the plastic hole, so that there is no risk of cracking when the cylindrical copper busbar 4 is assembled under the conical hole 3 of the plastic housing 1.

[0023] The usage and advantages of this utility model: The copper busbar pins of the current sensor are assembled with a precise positioning structure. When in use, the working process is as follows:

[0024] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, the staff inserts the cylindrical copper busbar 4 into the through hole 6, passes through the upper cover 5 and is inserted into the conical hole 3 inside the bottom shell 2, so that the cylindrical copper busbar 4 is inserted into the plastic shell 1. The central axis of the conical hole 3 is consistent with the central axis of the copper busbar leg, thereby realizing and completing the precise positioning of the copper busbar leg. In the process of inserting the cylindrical copper busbar 4 into the conical hole 3, the middle position of the copper busbar is assembled to the control groove 7 on the plastic shell 1. The height of the control groove 7 is guaranteed to ensure the extension length of the cylindrical copper busbar 4 leg. An open groove 8 is opened near the hole position of the plastic shell 1 to increase the elastic deformation of the plastic hole position, so that there is no risk of cracking when the cylindrical copper busbar 4 is assembled under the conical hole 3 of the plastic shell 1.

[0025] The above shows and describes the basic principles, main features, and advantages of the present invention. Persons skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A current sensor copper busbar pin assembly precise positioning structure, comprising a plastic housing (1), characterized in that: The bottom of the plastic shell (1) is fixedly connected to a bottom shell (2), a conical hole (3) is provided at the bottom of the bottom shell (2), and a cylindrical copper busbar (4) is movably connected inside the conical hole (3).

2. The current sensor copper busbar pin assembly precise positioning structure according to claim 1, characterized in that: The top of the bottom shell (2) is movably connected to an upper cover (5), and a through hole (6) is provided on the top of the upper cover (5).

3. The current sensor copper busbar pin assembly precise positioning structure according to claim 2, characterized in that: A control groove (7) is provided on the top of the upper cover (5), and the interior of the control groove (7) is movably connected to the cylindrical copper busbar (4).

4. The current sensor copper busbar pin assembly precise positioning structure according to claim 1, characterized in that: An opening slot (8) is provided on one side of the bottom of the conical hole (3), and the side surface of the cylindrical copper busbar (4) is movably connected to the interior of the through hole (6).

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