Connector and metering box
Patent Information
- Application Number
- CN202521886331.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-02
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-09-02
AI Technical Summary
然而，螺钉紧固方式需要借助螺丝刀等工具进行操作，增加了螺钉等零部件数量，且安装过程繁琐、装配复杂度高
[0016]本实用新型的技术方案通过在接线端子的连接柱上设置弹性部，在接线端子的连接柱插入电能表的电接口的过程中，弹性部在电接口的作用力发生弹性压缩，进而与电接口内壁形成过盈配合，至少在径向上，弹性部产生与电接口持续抵接的压力，从而保障连接柱和电接口的连接稳定性，同时，在限位头的限位作用下，保障弹性部在连接柱上的稳定性。如此，操作人员仅需将接插件的连接柱对准电能表的电接口，直接推入即可完成接插件和电能表连接，相对于接线端子通过螺钉锁附的方式电连接于电能表的方式而言，本方案简化了接线端子和电能表的电连接步骤，也有效保障接插件和电能表电连接的稳定性，从而提升了接插件和电能表电性连接的操作便利性。
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Figure CN224803121U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic instrument technology, and in particular to a connector and a metering box. Background Technology
[0002] In a metering box structure, an electricity meter and connectors are typically installed. The electricity meter has an electrical interface that connects to the connectors. External wires are generally connected to the electricity meter through terminals on the connectors. In related technologies, the terminals are usually inserted into the electricity meter's electrical interface, and then screws are tightened to achieve mechanical fixation and electrical continuity. However, screw tightening requires tools such as screwdrivers, increasing the number of screws and other parts, and making the installation process cumbersome and complex. Utility Model Content
[0003] The main purpose of this utility model is to propose a connector and metering box, which aims to simplify the connection steps of the wiring terminals and the electricity meter, and improve the operational convenience of the electrical connection of the connector and the electricity meter.
[0004] To achieve the above objectives, the connector proposed in this utility model is applied to a metering box, which is equipped with an electricity meter. The electricity meter includes an electrical interface, and the connector includes:
[0005] Mounting bracket, the mounting bracket being used for mounting inside the metering box; and
[0006] A terminal block is mounted on the mounting base. The terminal block includes a connecting post, an elastic part, and a limiting head. The elastic part is fixedly sleeved on the outer periphery of the connecting post. The limiting head is connected to the end of the connecting post and abuts against the elastic part in the axial direction of the connecting post. The elastic part and the connecting post are electrically connected. The elastic part is used to have an interference fit with the electrical interface.
[0007] In one embodiment, along the axial direction of the connecting column, the diameter of the elastic portion gradually increases from its end to its middle.
[0008] In one embodiment, the outer periphery of the elastic portion extends in an arc shape along the axial direction of the connecting column.
[0009] In one embodiment, at least the middle portion of the elastic part has a gap with the outer periphery of the connecting post in the axial direction.
[0010] In one embodiment, a plurality of deformation holes are provided on the outer periphery of the elastic part. The plurality of deformation holes are evenly spaced in the circumferential direction of the elastic part. The deformation holes extend along the axial direction of the connecting post and are located at the middle position of the elastic part.
[0011] In one embodiment, the connecting column includes a mounting section and a connecting section connected to each other. The end of the mounting section away from the connecting section is connected to the limiting head. The diameter of the mounting section is smaller than the diameter of the connecting section. The elastic part is sleeved on the mounting section and is interference-fitted between the limiting head and the connecting section.
[0012] In one embodiment, the end of the connecting post is provided with a threaded hole extending in the axial direction, and the limiting head includes a pressing block and a threaded post connected together. The pressing block abuts against the elastic part, and the threaded post is threadedly connected to the threaded hole.
[0013] In one embodiment, the mounting base includes a mounting plate and a cover, the terminal block further includes a wiring portion connected to the connecting post, the cover covers the wiring portion and is connected to the mounting plate, and the connecting post protrudes and protrudes from the cover.
[0014] In one embodiment, the diameter of the elastic portion is larger than the diameter of the connecting post.
[0015] This utility model also proposes a metering box, which includes an electricity meter and a connector as described above, wherein the connecting post is interference-fitted with the electrical interface of the electricity meter.
[0016] The technical solution of this utility model provides an elastic part on the connecting post of the terminal block. During the insertion of the connecting post into the electrical interface of the energy meter, the elastic part undergoes elastic compression under the force of the electrical interface, thus forming an interference fit with the inner wall of the electrical interface. At least radially, the elastic part generates continuous pressure against the electrical interface, ensuring the connection stability between the connecting post and the electrical interface. Simultaneously, the limiting head ensures the stability of the elastic part on the connecting post. Thus, the operator only needs to align the connecting post of the connector with the electrical interface of the energy meter and push it in to complete the connection. Compared to the method of connecting the terminal block to the energy meter using screws, this solution simplifies the electrical connection steps and effectively ensures the stability of the electrical connection, thereby improving the ease of operation for connecting the terminal block and the energy meter. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0018] Figure 1This is a schematic diagram of the structure of an embodiment of the connector provided by this utility model;
[0019] Figure 2 for Figure 1 Schematic diagram of the structure of the intermediate terminal block;
[0020] Figure 3 for Figure 2 Exploded view of the intermediate terminal block;
[0021] Figure 4 for Figure 1 A cross-sectional view of the connector;
[0022] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;
[0023] Figure 6 for Figure 1 An exploded view of the connector.
[0024] Explanation of icon numbers:
[0025] 100. Mounting base; 110. Mounting plate; 120. Cover; 200. Terminal block; 210. Wiring section; 220. Connecting post; 221. Mounting section; 222. Connecting section; 223. Screw hole; 230. Elastic part; 231. Deformation hole; 240. Limiting head; 241. Pressing block; 242. Threaded post.
[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0028] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0030] This utility model proposes a connector.
[0031] Please refer to Figures 1 to 3 In one embodiment of this utility model, the connector is applied to a metering box (not shown in the figure), the metering box is equipped with an energy meter (not shown in the figure), the energy meter includes an electrical interface (not shown in the figure), and the connector includes:
[0032] Mounting base 100, mounting base 100 is used for mounting inside the metering box; and
[0033] Terminal block 200 is mounted on mounting base 100. Terminal block 200 includes connecting post 220, elastic part 230 and limiting head 240. Elastic part 230 is fixedly sleeved on the outer periphery of connecting post 220. Limiting head 240 is connected to the end of connecting post 220 and abuts against elastic part 230 in the axial direction of connecting post 220. Elastic part 230 and connecting post 220 are electrically connected. Elastic part 230 is used to interference fit with electrical interface.
[0034] The technical solution of this utility model provides an elastic part 230 on the connecting post 220 of the terminal block 200. During the insertion of the connecting post 220 of the terminal block 200 into the electrical interface of the energy meter, the elastic part 230 undergoes elastic compression under the action of the electrical interface, thereby forming an interference fit with the inner wall of the electrical interface. At least radially, the elastic part 230 generates continuous pressure against the electrical interface, thus ensuring the connection stability between the connecting post 220 and the electrical interface. Simultaneously, the limiting head 240 ensures the stability of the elastic part 240 on the connecting post 220. Thus, the operator only needs to align the connecting post 220 of the connector with the electrical interface of the energy meter and push it in to complete the connection between the connector and the energy meter. Compared to the method of electrically connecting the terminal block 200 to the energy meter using screws, this solution simplifies the electrical connection steps between the terminal block 200 and the energy meter, effectively ensures the stability of the electrical connection between the connector and the energy meter, and thus improves the operational convenience of the electrical connection between the connector and the energy meter.
[0035] It should be noted that the elastic part 230 and the connecting post 220 are formed separately, and then the elastic part 230 is fixed to the connecting post 220. The elastic part 230 can be connected to the connecting post 220 through its own connecting structure, such as a threaded connection or a snap-fit connection, or the elastic part 230 can be fixedly connected to the connecting post 220 by another fastener. It can be understood that the diameter of the elastic part 230 is not less than the inner diameter of the electrical interface, but slightly larger than the inner diameter of the electrical interface, so that the elastic part 230 is stably interference-fitted within the electrical interface. Furthermore, both the elastic part 230 and the connecting post 220 are made of conductive materials, such as copper alloy or aluminum alloy. Additionally, a connecting post 220 can have multiple elastic parts 230, or only one elastic part 230. Here, the diameter of the elastic part 230 is understood as the diameter of the outline circle formed with the axis of the connecting post 220 as the center and the distance from the farthest point of the elastic part 230 from the axis of the connecting post 220 to that axis as the radius.
[0036] Please refer to Figure 2 , Figure 3 and Figure 5Regarding the elastic part 230 being fixedly sleeved on the outer periphery of the connecting post 220, it can be understood that the elastic part 230 is fixedly sleeved on the outer peripheral surface of the connecting post 220 by an interference fit or tight fit. Since the outer diameter of the elastic part 230 in its free state is larger than the inner diameter of the electricity meter's electrical interface, during the process of inserting the connecting post 220 into the electrical interface, the elastic part 230 undergoes radial compression deformation under the action of external force, generating continuous and uniform contact pressure with the inner wall of the electrical interface, thereby forming a stable electrical connection and a firm mechanical connection. In this way, while ensuring convenient connection between the terminal 200 and the electricity meter, it also facilitates the shaping of the elastic part 230 and the connecting post 220, ensuring the stability of the elastic part 230's elastic clamping function. In addition, since the elastic part 230 and the connecting post 220 are fixedly sleeved, they maintain good electrical conductivity. Current can be directly conducted through the connecting post 220 to the elastic part 230, and then through its outer surface to achieve a low-resistance connection with the electrical interface, effectively reducing the overall contact resistance and reducing the risk of overheating.
[0037] Please refer to Figures 2 to 4 Without loss of generality, the diameter of the limiting head 240 is larger than the inner diameter of the elastic part 230, but not larger than the outer diameter of the elastic part 230. When the elastic part 230 is fitted onto the outer periphery of the connecting post 220 and pushed to the predetermined position, the limiting head 240 is provided at the end of the connecting post 220, so that the elastic part 230 is blocked and positioned axially by the limiting head 240, thereby preventing the elastic part 230 from moving axially or falling off during assembly, transportation, or repeated insertion and removal, ensuring that the elastic part 230 is always in the preset position, maintaining a stable and consistent compression and contact pressure when it mates with the electrical interface of the energy meter, and ensuring the reliability of the electrical connection. In addition, using the limiting head 240 to limit the elastic part 230 simplifies the structure of the elastic part 230, which can simply be fitted onto the outer periphery of the connecting post 220, reducing the processing difficulty of the elastic part 230. Of course, in other embodiments, a connecting structure can be provided on the inner periphery of the elastic part 230 to connect with the connecting post 220, such as an internal thread on the inner periphery of the elastic part 230 and an external thread on the outer periphery of the connecting post 220.
[0038] In one embodiment, please refer to Figures 1 to 3 The diameter of the elastic portion 230 is larger than the diameter of the connecting post 220. It is understood that the connecting post 220 is also partially inserted into the electrical interface. Limiting the diameter of the elastic portion 230 to be larger than the diameter of the connecting post 220 avoids the connecting post 220 obstructing insertion into the electrical interface, ensuring that the elastic portion 230 is inserted to a deeper position. Of course, in other embodiments, the diameter of the connecting post 220 may also be greater than or equal to the diameter of the elastic portion 230, resulting in the elastic portion 230 being disposed at the end of the connecting post 220, and only the elastic portion 230 being interference-fitted into the electrical interface.
[0039] In one embodiment, please refer to Figure 2 , Figure 3 and Figure 5 The connecting post 220 includes a mounting section 221 and a connecting section 222 connected together. The end of the mounting section 221 away from the connecting section 222 is connected to a limiting head 240. The diameter of the mounting section 221 is smaller than the diameter of the connecting section 222. An elastic part 230 is sleeved on the mounting section 221, and the elastic part 230 is interference-fitted between the limiting head 240 and the connecting section 222. It can be understood that the terminal block 200 also includes a wiring part 210 for connecting external wires, and the end of the connecting section 222 away from the mounting section 221 is connected to the wiring part 210. Because the mounting section 221 has a smaller diameter, it provides suitable installation space for the elastic part 230. The larger diameter of the connecting section 222 forms an axial step, which, together with the limiting head 240, creates a closed-end receiving area. This prevents the elastic part 230 from shifting or falling off axially after assembly, ensuring it maintains a stable compression state and preload during insertion and removal. This guarantees the continuity and uniformity of contact pressure with the electricity meter interface, improving connection reliability. The assembly sequence is as follows: first, the elastic part 230 is fitted into the mounting section 221, then the limiting head 240 is fixed to the end of the mounting section 221, naturally creating an axial limit on the elastic part 230. No additional snap rings or fasteners are needed, simplifying the assembly process. Furthermore, the large diameter of the connecting section 222 enhances the overall structural strength of the terminal block 200, especially in the area connecting the wiring portion 210, which helps withstand the stress during external wire connections. Furthermore, the elastic portion 230 is axially clamped between the step formed by the mounting section 221 and the connecting section 222, and the limiting head 240, and has a tendency to deform radially, providing prestress to the elastic portion 230, thereby ensuring the stability of the interference fit between the elastic portion 230 and the electrical interface. Of course, in other embodiments, the connecting post 220 can also be configured as a columnar structure with a gradually changing diameter, with one end of the connecting limiting head 240 having a smaller diameter and one end of the connecting wire portion 210 having a larger diameter, so that the connecting post 220 provides axial support to the elastic portion 230 towards the limiting head 240, ensuring the stability of the elastic portion 230 on the connecting post 220.
[0040] Regarding the connection method between the limiting head 240 and the connecting post 220, in one embodiment, please refer to... Figure 2 , Figure 3 and Figure 5The end of the connecting column 220 is provided with a screw hole 223 extending in the axial direction. The limiting head 240 includes a pressing block 241 and a threaded column 242 connected to each other. The pressing block 241 is pressed against the elastic part 230, and the threaded column 242 is threadedly connected to the screw hole 223. It is understood that by screwing the threaded post 242 into the threaded hole 223 of the connecting post 220, the pressure block 241 can be moved towards the elastic part 230 and a stable axial pressure can be applied, so that the elastic part 230 is firmly pressed between the pressure block 241 and the step of the connecting section 222, effectively preventing axial movement or detachment during use, ensuring the durability and consistency of the contact pressure when the elastic part 230 is plugged into the electrical interface of the energy meter, thereby improving the stability and safety of the electrical connection. At the same time, this threaded connection method facilitates the installation and replacement of the elastic part 230. During manufacturing and maintenance, the elastic part 230 can be first fitted onto the installation section 221, and then the positioning assembly can be achieved by tightening the limiting head 240, which is simple to operate and reliable in connection. In addition, the threaded structure allows for controllable adjustment of the clamping force, avoiding plastic deformation of the elastic part 230 or damage to the electrical interface due to overpressure, and can also compensate for the elastic decay of the elastic part 230 during long-term use, extending the service life of the connector. The elastic part 230, the limiting head 240, and the connecting post 220 are all made of conductive materials, such as copper alloy or aluminum alloy. Of course, in other embodiments, the limiting head 240 can also be connected to the connecting post 220 by snap-fit or plug-in connection.
[0041] In one embodiment, please refer to Figure 2 , Figure 3 and Figure 5 Along the axial direction of the connecting post 220, the diameter of the elastic element gradually increases from the end to the middle of the elastic part 230. It can be understood that the overall outer contour of the elastic part 230 is bulging in the middle and narrowing at both ends. This allows the end of the elastic part 230 to first contact the inner wall of the electrical interface when the connecting post 220 is inserted into the electricity meter's interface. Its smaller outer diameter forms a natural guide surface, effectively guiding the connecting post 220 smoothly into the interface, avoiding jamming or scraping caused by radial abrupt changes during initial insertion, reducing insertion and extraction forces, and improving operational smoothness. As the insertion depth increases, the area with the largest outer diameter in the middle of the elastic part 230 gradually contacts the inner wall of the electrical interface and generates elastic compression, forming the maximum contact pressure.
[0042] Furthermore, in this embodiment, please refer to Figure 2 , Figure 3 and Figure 5Along the axial direction of the connecting post 220, the outer periphery of the elastic portion 230 extends in an arc shape. It should be noted that the arc of the elastic portion 230 is a convex arc, exhibiting a diameter that initially increases and then decreases from the end to the middle. This serves two purposes: firstly, the arc-shaped slope guides the elastic portion 230 to abut against the inner wall of the electrical interface, reducing the difficulty of inserting the connecting post 220 into the electrical interface; secondly, the rate of diameter change is lower at the arc apex in the middle, ensuring sufficient contact area between the elastic portion 230 and the inner wall of the electrical interface, thus reducing resistance and heat generation. This not only makes the stress distribution more uniform, avoiding material fatigue or interface damage caused by stress concentration, but also balances ease of insertion with connection strength, improving the guidance and contact stability during the insertion process. Of course, in other embodiments, multiple elastic protrusions may be provided on the outer periphery of the elastic portion 230.
[0043] Please refer to Figure 2 , Figure 3 and Figure 5 In the axial direction of the connecting column 220, at least the middle portion of the elastic part 230 has a gap with the outer periphery of the connecting column 220. It can be understood that the diameter of the middle portion of the elastic part 230 in the axial direction is larger. During the deformation process of the elastic part 230, the middle portion of the elastic part 230 deforms inwards in the axial direction. The spatial gap between the elastic part 230 and the connecting column 220 provides clearance for the deformation of the elastic part 230, thereby ensuring the stability and reliability of the elastic deformation of the elastic part 230. Alternatively, the end of the elastic part 230 in the axial direction may wrap around the outer periphery of the connecting column 220, and the radial gap between the elastic part 230 and the outer periphery of the connecting column 220 gradually decreases from the middle to the end. This forms a variation pattern consistent with the outer periphery of the elastic part 230 in the axial direction, ensuring the structural stability of the elastic part 230.
[0044] Specifically, in this embodiment, please refer to Figure 2 and Figure 3The elastic part 230 has multiple deformation holes 231 on its outer periphery. These holes are evenly spaced around the circumference of the elastic part 230 and extend axially along the connecting post 220, located at the center of the elastic part 230. It can be understood that the deformation holes 231 are located at the axial center of the elastic part 230 and extend a certain length towards both ends. Thus, by providing axially extending deformation holes 231 in the maximum outer diameter region of the elastic part 230, sufficient deformation space is provided for the elastic part 230, making it easier for the elastic part 230 to generate uniform radial compression deformation when inserted into the electricity meter interface. This reduces insertion and extraction forces and avoids plastic deformation or interface damage caused by localized stress concentration. Simultaneously, the multiple circumferentially spaced deformation holes 231 divide the elastic part 230 into multiple elastic plates, ensuring uniform circumferential distribution of contact pressure during insertion, improving the reliability and current-carrying capacity of the electrical contact. Furthermore, the end of the elastic part 230 abuts against the outer periphery of the connecting post 220, and there is a radial gap between the middle part of the elastic part 230 and the connecting post 220, thereby providing radial deformation space for the spring piece of the elastic part 230 and ensuring the stability of the interference fit between the elastic part 230 and the electrical interface. The axial lengths of the deformation holes 231 can be consistent or inconsistent, such as being staggered.
[0045] Regarding the structural form of the mounting base 100, in one embodiment, please refer to... Figure 1 , Figure 4 and Figure 6 The mounting base 100 includes a mounting plate 110 and a cover 120. The terminal block 200 also includes a wiring portion 210 connected to a connecting post 220. The cover 120 covers the wiring portion 210 and is connected to the mounting plate 110. The connecting post 220 protrudes and is exposed outside the cover 120. It is understood that the cover 120 and the mounting plate 110 are made of insulating material. The wiring portion 210, as the part of the terminal block 200 used to connect external wires, such as the area where the wire screw or clamping structure is located, is covered by the cover 120, effectively isolating the live wiring portion 210. This prevents accidental contact by operators during operation or maintenance of the metering box, thus preventing electric shock accidents. It also avoids damage to the connection between the terminal block 200 and external wires from the external environment, improving safety and reliability. Simultaneously, the cover 120 is fixedly connected to the mounting plate 110, enhancing the stability and vibration resistance of the mounting base 100, which is beneficial for the long-term stable operation of the terminal block 200 within the metering box. The connecting post 220, designed for plugging into the electrical interface of the electricity meter, protrudes from the outside of the housing 120. This ensures that it is inserted into the electrical interface of the electricity meter after the housing 120 is installed, achieving electrical continuity and avoiding connection obstacles caused by the housing 120 obstructing the connection. Alternatively, in other embodiments, the outer periphery of the terminal block 200 can be covered with insulating and high-temperature resistant materials such as insulating ceramic.
[0046] This utility model also proposes a metering box, which includes a connector. The specific structure of the connector is as described in the above embodiments. Since this metering box adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. Specifically, after the connecting post of the connector is inserted into the electrical interface of the electricity meter, the connecting post and the electrical interface are interference-fitted. The electricity meter and the connector are fixed on the box body, which is beneficial to the connection stability of the connecting post and the electrical interface.
[0047] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.
Claims
1. A connector, characterized in that, Applied to a metering box, the metering box is equipped with an energy meter, the energy meter includes an electrical interface, and the connector includes: Mounting bracket, the mounting bracket being used for mounting inside the metering box; and A terminal block is mounted on the mounting base. The terminal block includes a connecting post, an elastic part, and a limiting head. The elastic part is fixedly sleeved on the outer periphery of the connecting post. The limiting head is connected to the end of the connecting post and abuts against the elastic part in the axial direction of the connecting post. The elastic part and the connecting post are electrically connected. The elastic part is used to have an interference fit with the electrical interface.
2. The connector as described in claim 1, characterized in that, The connecting column includes a mounting section and a connecting section connected to each other. The end of the mounting section away from the connecting section is connected to the limiting head. The diameter of the mounting section is smaller than the diameter of the connecting section. The elastic part is sleeved on the mounting section and is interference-fitted between the limiting head and the connecting section.
3. The connector as described in claim 1, characterized in that, The end of the connecting column is provided with a threaded hole extending in the axial direction. The limiting head includes a pressing block and a threaded column connected together. The pressing block is pressed against the elastic part, and the threaded column is threadedly connected to the threaded hole.
4. The connector as described in claim 1, characterized in that, Along the axial direction of the connecting column, from the end to the middle of the elastic part, the diameter of the elastic part gradually increases.
5. The connector as described in claim 4, characterized in that, Along the axial direction of the connecting column, the outer periphery of the elastic part extends in an arc shape.
6. The connector as described in claim 4, characterized in that, In the axial direction of the connecting column, at least the middle portion of the elastic part has a gap with the outer periphery of the connecting column.
7. The connector as described in claim 4, characterized in that, The elastic part has a plurality of deformation holes on its outer periphery. The plurality of deformation holes are evenly spaced in the circumferential direction of the elastic part. The deformation holes extend along the axial direction of the connecting column and are located in the middle of the elastic part.
8. The connector as described in any one of claims 1 to 7, characterized in that, The mounting base includes a mounting plate and a cover. The wiring terminal also includes a wiring part connected to the connecting post. The cover covers the wiring part and is connected to the mounting plate. The connecting post protrudes and is exposed outside the cover.
9. The connector as described in any one of claims 1 to 7, characterized in that, The diameter of the elastic part is larger than the diameter of the connecting post.
10. A measuring box, characterized in that, It includes an electricity meter and a connector as described in any one of claims 1 to 9, wherein the connecting post is interference-fitted with the electrical interface of the electricity meter.