E pole contact structure of track power adapter

Abstract

The utility model discloses an E-pole contact structure of a track power adapter, which comprises a grounding clamping reed fixed in a ground wire reed positioning groove in an adapter shell, a reed extension part bent downwards and connected to the tail part of the grounding clamping reed, and a horizontal ground wire conducting rod connected to the bottom end of the reed extension part, one end of the ground wire conducting rod extends out of the plugging portion of the adapter shell in a telescopic mode, and a spring abutting against the end portion of the ground wire conducting rod is arranged in the ground wire reed positioning groove. And a reset mechanism is matched with the ground wire conducting rod fixedly connected to the bottom end of the adapter, so that dual-elastic reset is realized, the ground wire conducting rod is ensured to be stably contacted with a ground wire in a track when the adapter is inserted into the track, and a complete and reliable E-pole contact structure of a grounding path is established.

Description

Technical Field

[0001] This utility model relates to the field of power connection equipment, and in particular to an E-pole contact structure of a rail power adapter. Background Technology

[0002] In the field of electrical engineering and power systems, rail-mounted sockets, as a flexible power supply solution, have rapidly gained popularity in industrial and commercial settings in recent years. The grounding (E) contact structure inside the adapter is a crucial part used to connect the ground wire in electrical equipment or circuits, directly affecting the safety and reliability of the equipment. Currently, there are various technical solutions for the E-pole contact structure of commercially available rail-mounted sockets, but all have significant drawbacks, specifically as follows:

[0003] The first approach involves a through slot inside the adapter, into which a flat or cylindrical pin is inserted. The pin and the grounding copper plate in the adapter are detachable and connected by a spring. The grounding copper plate clamps or abuts the pin via an extended portion, and the pin abuts against the track under the action of the spring. For example, Chinese patent application CN221783554U discloses a grounding structure for a track socket and the track socket itself. In this grounding structure, a grounding rod is slidably installed inside the guide post, and a spring presses against the grounding contact plate and the grounding rod, forming an electrical connection with the conductive part. This type of grounding structure is commonly used in commercially available track sockets. However, according to national standards for sockets, all parts of the grounding circuit should be a single, complete conductor, or reliably connected together by riveting, welding, or other methods. The national standard explicitly stipulates that grounding should be achieved through riveting or welding, not just a spring connection. Therefore, such a grounding connection structure clearly does not meet safety standards.

[0004] The second approach involves riveting the grounding copper plate and the pin together to form a single unit, which lacks elasticity. Inside the track, two symmetrical clamping copper plates hold the end of the pin in the grounding conductive section, thus achieving grounding connection. For example, Chinese Patent Publication No. CN110829128A discloses a track socket and its power distribution system, which includes an E-pole electrical rail disposed within the third channel. This E-pole electrical rail is either a linear or circular conductive strip. The E-pole electrical rail consists of a first conductive spring and a second conductive spring. When the E-pole pin of the socket adapter is inserted, the first and second conductive springs slightly deform, creating a clamping force on the E-pole pin. However, such an E-pole contact structure needs to be installed along the entire length of the track, resulting in higher costs.

[0005] The third approach still integrates the grounding copper plate and the pin into a single unit, which also lacks elasticity. A continuous, arched conductive spring is installed within the track, relying on the elastic deformation of the raised conductive spring to contact and connect with the end of the adapter's grounding pin. For example, a track socket disclosed in Chinese Patent Publication No. CN218275412U mentions that "the grounding spring 4 has an arc-shaped structure, and the grounding terminal 47 is connected to the grounding spring 4." This approach, using a single raised grounding spring, performs well in single-point installations. However, the problems are particularly prominent in densely installed scenarios. When the distance between adjacent adapters is small, the large-area concave deformation of the spring caused by the insertion of the first adapter changes the initial contact angle of adjacent springs, resulting in the grounding pin end of subsequent adapters only achieving line contact, not surface contact, or even complete disconnection. More seriously, the spring is prone to irreversible plastic deformation after long-term pressure, resulting in permanent indentations, causing the grounding loop resistance to increase exponentially, ultimately creating a localized overheating risk point.

[0006] Therefore, there is an urgent need for a new type of grounding structure that is low in cost, meets the requirements for riveting and fixing, can adapt to track tolerances through elastic compensation, and avoids interference from dense installations, thereby solving the problems mentioned in the background technology. Utility Model Content

[0007] The purpose of this utility model is to provide an E-pole contact structure for a track power adapter, which achieves national standard compliance through riveting and adopts a dual elastic reset mechanism to ensure the effectiveness of grounding contact, while reducing the overall manufacturing cost.

[0008] To achieve the above objectives, this utility model adopts the following solution: an E-pole contact structure for a track power adapter, comprising:

[0009] The grounding clamping spring is fixed in the grounding spring positioning groove inside the adapter housing and is used to clamp the grounding pin of the plug;

[0010] The spring extension is connected to the tail of the grounding clamping spring and is bent downwards.

[0011] A grounding conductor rod is fixedly connected to the bottom end of the spring extension. The grounding conductor rod can be axially telescopically inserted into the plug-in portion of the adapter housing, and its tail end protrudes outside the plug-in portion.

[0012] A reset mechanism is provided in the positioning groove of the ground wire spring, which is used to keep the tail end of the ground wire conductive rod exposed outside the plug-in part after the ground wire conductive rod is retracted.

[0013] In the above scheme, the elastic tilting deformation of the spring extension can absorb the track installation tolerance. The spring extension, which is formed by bending, has both rigidity and local elasticity. Combined with the dual elastic synergy of the reset mechanism, it ensures that the ground wire conductive rod protruding from the plug part is effectively attached to the ground wire inside the track, avoiding grounding failure due to reset failure.

[0014] As a preferred embodiment of this utility model, a telescopic groove communicating with the positioning groove of the ground wire spring is passed through the center of the plug-in part, and the ground wire conductive rod is slidably and horizontally inserted in the telescopic groove.

[0015] As a preferred embodiment of this utility model, the reset mechanism is a spring with one end abutting against the end of the ground wire conductive rod connected to the spring extension and the other end abutting against the inner wall of the ground wire spring positioning groove. A protruding tongue is provided at the end of the ground wire conductive rod connected to the spring extension, and one end of the spring is sleeved on the protruding tongue and abuts against the end of the adjacent ground wire conductive rod.

[0016] As a preferred embodiment of this utility model, the expansion groove is a rectangular through hole, and the grounding conductor rod is strip-shaped and retractably accommodated in the expansion groove, which restricts the sliding freedom to a single axial direction, avoids radial offset, ensures smooth sliding, prevents contact resistance fluctuations caused by lateral shaking, and improves grounding stability.

[0017] As a further embodiment of this utility model, a reinforcing rib is provided along the center of the grounding conductor rod to ensure that the grounding conductor rod bends and deforms when under pressure, thereby eliminating the problem of contact surface misalignment.

[0018] In a preferred embodiment of this invention, the reinforcing rib is a groove stamped along the length of the grounding conductor rod, with its bottom higher than one side of the grounding conductor rod, forming a localized rigidity enhancement zone. When the adapter is inserted into the adapter slot of the track, the tail end of the grounding conductor rod is squeezed by the conductive plate slot in the metal of the track, pushing the grounding conductor rod to slide along the telescopic groove towards the grounding spring positioning groove, causing the spring extension to elastically tilt and deform to one side, while the spring is compressed. Conversely, when the adapter is pulled out, the restoring force of the spring pushes the grounding conductor rod to slide outward until the end of the reinforcing rib abuts against the inner end face of the telescopic groove, at which point the spring extension returns to a vertical position. The stamped reinforcing rib increases the moment of inertia of the conductor rod section through the groove structure, significantly enhancing the bending stiffness. When the adapter is inserted, the reinforcing rib can resist the lateral squeezing force of the track, preventing the grounding conductor rod from bending, ensuring that the contact surface is always aligned with the conductive plate slot, and reducing the grounding resistance fluctuation rate.

[0019] As a preferred embodiment of this utility model, the spring extension is integrally formed with the grounding clamping spring vertically downward, so that the current path is continuous and uninterrupted, the grounding resistance is reduced, and the reliability of long-term use is improved.

[0020] In a preferred embodiment of this utility model, the grounding conductor rod and the bottom end of the spring extension are fixedly connected together by riveting.

[0021] As a preferred embodiment of this utility model, the spring extension is bent downward and integrally formed with the grounding clamping spring and the grounding conductor rod, which enhances rigidity and reduces the complexity of assembly.

[0022] In summary, the advantages of this utility model compared to the prior art are as follows: Firstly, by setting a ground wire spring positioning groove in the adapter housing and using an integrally formed grounding clamping spring with a spring extension at its tail, and cooperating with the ground wire conductive rod fixedly connected to its bottom end to achieve a reset mechanism, a double elastic force reset is achieved, ensuring that the ground wire conductive rod is in stable contact with the ground wire in the track when the adapter is inserted into the track, establishing a complete and reliable grounding path, thereby overcoming the defect that a single spring connection is prone to causing unstable grounding.

[0023] Secondly, this utility model designs the grounding conductor rod to be axially extendable in the adapter plug-in part, and has a telescopic groove in the center that communicates with the positioning groove of the grounding spring, so that the grounding conductor rod can slide horizontally when subjected to force. This maintains good mechanical elasticity and eliminates the need to lay a continuous grounding structure along the track, thereby reducing manufacturing and installation costs and improving the applicability and flexibility of the adapter.

[0024] Thirdly, this utility model adds reinforcing ribs to the grounding conductor rod and adopts a reset mechanism that uses a tongue and a spring to ensure that the grounding conductor rod slides under pressure when inserted into the metal track, and can quickly return to its original position after the spring extension undergoes elastic tilting deformation. This not only effectively avoids the hidden danger of plastic deformation of the entire raised grounding spring due to long-term pressure, but also maintains a large area of ​​stable contact, thereby ensuring a long-term reliable grounding effect. Attached Figure Description

[0025] Figure 1 This is one of the three-dimensional structural views of this utility model.

[0026] Figure 2 This is the second three-dimensional structural view of the present invention.

[0027] Figure 3 This is a schematic diagram of the present invention installed on the adapter housing, and an enlarged view of a partial area in the figure.

[0028] Figure 4 This is one of the cross-sectional views of the present invention mounted on the adapter housing.

[0029] Figure 5 This is the second cross-sectional view of the present invention mounted on the adapter housing.

[0030] Figure 6 This is a cross-sectional view of the present invention mounted on the adapter housing and inserted into the track, as well as an enlarged view of a partial area in the figure.

[0031] Explanation of reference numerals in the attached drawings: 1. Adapter housing; 2. Track; 3. Grounding clamp spring; 4. Grounding conductor rod; 5. Reset mechanism; 11. Grounding spring positioning groove; 12. Plug-in part; 21. Conductive plate slot; 22. Adapter slot; 31. Spring extension part; 41. Protruding tongue; 42. Reinforcing rib; 43. Socket; 51. Spring; 121. Telescopic groove. Detailed Implementation

[0032] The following detailed description provides various embodiments or examples for implementing this utility model. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of the invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0033] Furthermore, spatial terms may be used, such as "below," "lower," "from the inside out," "above," "upper," and similar terms. These relational terms are used to facilitate the description of the relationship between some elements or features in the drawings and other elements or features. These spatial relational terms include different orientations of the device in use or operation, as well as the orientations described in the drawings. The device may be rotated 90 degrees or otherwise to different orientations, and the spatially related adjectives used therein can be interpreted in the same way. Therefore, they should not be construed as limiting the invention. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: Figures 1 to 6The diagram illustrates an E-pole contact structure for a track power adapter. It includes a ground spring positioning groove 11 within the adapter housing 1, corresponding to the ground pin insertion hole 43 on the adapter housing 1. A metal grounding clamping spring 3 is installed within the ground spring positioning groove 11 to clamp the ground pin of the plug. The back of the adapter housing 1 has a plate-shaped insertion portion 12. A telescopic groove 121, communicating with the ground spring positioning groove 11, passes through the center of the insertion portion 12. The telescopic groove 121 is a rectangular through-hole through which a horizontally extending ground conductive rod 4, in the shape of a strip, slidably passes. A vertically downward bent spring extension 31 extends integrally from the tail of the grounding clamping spring 3. One end of the ground conductive rod 4 is riveted to the bottom end of the spring extension 31. It should be noted that the grounding conductor rod 4 can also be connected by integrally bending the bottom end of the spring extension 31 to enhance rigidity and reduce cumbersome assembly operations. The other end of the grounding conductor rod 4 away from the riveted spring extension 31 extends out of the insertion part 12. A reset mechanism 5 is provided in the grounding spring positioning groove 11 to keep the tail end of the grounding conductor rod 4 exposed outside the insertion part 12 after retraction. By pre-setting a fixed ground wire spring positioning groove 11 in the adapter housing 1, and installing an integrally formed grounding clamping spring 3 in the ground wire spring positioning groove 11 and bending its tail vertically downward to form a spring extension 31, the ground wire conductive rod 4 is then fixedly connected. The ground wire conductive rod 4 has an axial telescopic function and is telescopically inserted into the telescopic groove 121 of the plug-in part 12. With the reset mechanism 5 set in the ground wire spring positioning groove 11, when the adapter is inserted into the track 2, the ground wire conductive rod 4 can reliably contact the conductive plate slot 21 made of metal in the track 2 to form a stable grounding path. After the adapter is pulled out, the reset mechanism 5 keeps the tail end of the ground wire conductive rod 4 outside the plug-in part 12 of the adapter, ensuring that effective grounding can still be achieved during the next insertion and removal. It should be noted that by adopting the E-pole contact structure of this embodiment, there is no need to set a separate ground wire conductive sheet in the track 2. By connecting the ground wire terminal to the ground wire of the power supply cable at the end of the metal conductive sheet slot 21, the grounding circuit between the inner wall of the conductive sheet slot 21 and the grounding clamping spring 3 of the adapter can be made conductive.

[0035] Among them, such as Figures 1 to 6As shown, in this embodiment, the reset mechanism 5 consists of a stainless steel spring 51 with one end abutting against the end of the ground wire conductive rod 4 connected to the spring extension 31 and the other end abutting against the inner wall of the ground wire spring positioning groove 11. A protrusion 41 is provided at the end of the ground wire conductive rod 4 connected to the spring extension 31, and one end of the spring 51 is sleeved on the protrusion 41 and abuts against the end of the adjacent ground wire conductive rod 4. When the adapter is inserted into the track 2, when the ground wire conductive rod 4 is squeezed and pushed by the metal conductive plate slot 21 in the track 2, it pushes the ground wire conductive rod 4 to slide along the telescopic groove 121 into the adapter housing 1. At this time, the spring extension 31 elastically tilts and deforms towards the inside of the ground wire spring positioning groove 11, and the spring 51 is compressed at the same time, forming a double reset force. After the adapter is pulled out, the spring 51 releases its stored energy and pushes the ground wire conductive rod 4 to slide outward again. The dual elastic reset not only ensures the elasticity and shape stability of the grounding conductive rod 4 after repeated insertion and removal, but also avoids the problems of plastic deformation of conductive elements, poor contact, or sharp increase in grounding circuit impedance caused by long-term pressure in traditional solutions.

[0036] In addition, such as Figure 1 and Figure 2 as well as Figures 4 to 6 As shown in the figure, it can be clearly seen that a reinforcing rib 42 is provided along the center of the grounding conductive rod 4 in this embodiment. The reinforcing rib 42 is a groove formed by stamping on its surface along the length direction of the grounding conductive rod 4. Its bottom is higher than one side surface of the grounding conductive rod 4, forming a local rigidity enhancement area. When the adapter is inserted into the adapter slot 22 of the track 2, the tail end of the grounding conductive rod 4 is squeezed by the conductive plate slot 21, pushing the grounding conductive rod 4 to slide along the telescopic groove 121 towards the grounding spring positioning groove 11, causing the spring extension 31 to elastically tilt and deform to one side. At the same time, the spring 51 is compressed. Conversely, when the adapter is pulled out, the restoring force of the spring 51 pushes the grounding conductive rod 4 to slide outward until the end of the reinforcing rib 42 abuts against the inner end face of the telescopic groove 121. At this time, the spring extension 31 returns to a vertical position. The reinforcing rib 42 can resist the lateral squeezing force of the conductive plate slot 21 made of metal in the track 2 and prevent the grounding conductive rod 4 from bending.

[0037] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An E pole contact structure of a track power adapter, characterized by, The utility model relates to an adapter for a track power supply system, comprising: a ground clamping spring (3) fixed in a ground spring positioning groove (11) in an adapter shell (1) for clamping the ground pin of a plug; a spring extension (31) connected to the tail of the ground clamping spring (3) and bent downward; a ground conducting rod (4) fixedly connected to the bottom end of the spring extension (31), the ground conducting rod (4) being axially telescopic and arranged in a plug-in part (12) of the adapter shell (1), with the tail end exposed outside the plug-in part (12); a reset mechanism (5) arranged in the ground spring positioning groove (11) for keeping the tail end of the ground conducting rod (4) exposed outside the plug-in part (12) after retraction.

2. An E pole contact structure for a track power adapter according to claim 1, characterized in that A telescopic groove (121) is arranged in the center of the plug-in part (12) and communicates with the ground spring positioning groove (11), and the ground conducting rod (4) is horizontally arranged in the telescopic groove (121) in a slidable manner.

3. An E pole contact structure for a track power adapter as defined in claim 2, characterized in that The reset mechanism (5) is a spring (51) abutting against the end of the ground conducting rod (4) connected to the spring extension (31) at one end and abutting against the inner wall of the ground spring positioning groove (11) at the other end, and a tongue (41) is arranged at the end of the ground conducting rod (4) connected to the spring extension (31), with one end of the spring (51) sleeved on the tongue (41) and abutting against the end of the ground conducting rod (4).

4. An E pole contact structure for a track power adapter according to claim 3, wherein The telescopic groove (121) is a rectangular through hole, and the ground conducting rod (4) is in the form of a strip and is telescopically arranged in the telescopic groove (121).

5. An E pole contact structure for a track power adapter according to claim 3 or 4, characterized in that A reinforcing rib (42) is arranged in the center of the ground conducting rod (4).

6. An E pole contact structure for a track power adapter according to claim 5, wherein The reinforcing rib (42) is a groove stamped on the surface of the ground conducting rod (4) along the length direction of the ground conducting rod (4), with the bottom higher than one side surface of the ground conducting rod (4) to form a local rigid reinforcing area, when the adapter is inserted into the adapter slot (22) of the track (2), the tail end of the ground conducting rod (4) is pressed by the conducting piece slot (21) in the track (2) to push the ground conducting rod (4) to slide along the telescopic groove (121) to the ground spring positioning groove (11) to make the spring extension (31) elastically tilt and deform to one side, and the spring (51) is compressed, and vice versa, when the adapter is pulled out, the reset force of the spring (51) pushes the ground conducting rod (4) to slide outward until the end of the reinforcing rib (42) abuts against the inner end surface of the telescopic groove (121), at this time, the spring extension (31) restores to a vertical state.

7. An E pole contact structure for a track power adapter as defined in claim 1, wherein The spring extension (31) is integrally formed with the ground clamping spring (3) perpendicularly downward.

8. The E pole contact structure of a rail power adapter of claim 1, wherein, The ground conducting rod (4) and the bottom end of the spring extension (31) are fixedly connected by riveting.

9. The E pole contact structure of a rail power adapter of claim 1, wherein, The spring extension (31) is integrally formed with the ground clamping spring (3) and the ground conducting rod (4) by downward bending.

Images