An adapter and track socket with E pole conductive spring piece

Abstract

The application relates to an adapter with a storable E-pole conductive spring and a track socket, wherein the adapter comprises a socket end and a power taking end connected to the lower end of the socket end, the socket end comprises a rotating ring, the socket end further comprises a fixed seat connected to the lower end of the rotating ring, the power taking end comprises a guide body connected to the lower end of the fixed seat, the fixed seat is rotatably connected with the rotating ring, the adapter further comprises an E-pole conductive spring and a driving piece for cooperating with the rotating ring to drive the E-pole conductive spring to move, and rotating the rotating ring can drive the E-pole conductive spring to unfold or store on one side of the left and right sides of the guide body. The E-pole conductive spring is stored in the guide body in a non-working state, the possibility of foreign matter invasion is greatly reduced, and grounding failure caused by foreign matter accumulation is effectively avoided; and the spring is completely hidden in the storage state, so that the risk of user injury caused by accidental touch is reduced. The application realizes comprehensive improvement in safety protection, conductive stability, use convenience and maintenance cost and the like.

Description

Technical Field

[0001] This utility model relates to the field of track socket technology, specifically to an adapter and track socket with a retractable E-pole conductive spring. Background Technology

[0002] In the field of power supply, the combination of power rails and adapters is widely used in home, office and industrial scenarios as a flexible and convenient power supply solution. The reliable conductivity of the E pole (grounding pole) is the core link to ensure power safety. Its function is to conduct the leakage current of the equipment to the ground and avoid electric shock accidents.

[0003] In existing technologies, the conductive structure of the E-pole in power rails and adapters has many design flaws, making it difficult to balance safety, reliability, and ease of use. On one hand, for traditional power rails with narrow power outlets, the E-pole conductive piece is typically fixed at the bottom center of the outlet, while the E-pole conductive piece of the matching adapter is correspondingly fixed to the bottom of the guide body, exhibiting a non-retractable rigid structure. Because the E-pole conductive piece is exposed at the bottom of the outlet, foreign objects such as dust, hair, and small metal fragments can easily enter and accumulate around the E-pole conductive piece, even jamming it. This prevents proper contact of the E-pole when the adapter is inserted, directly affecting the grounding function. Secondly, during the long-term plugging and unplugging of the adapter and the power rail, continuous friction will occur between the fixed E-pole conductive plates, which can easily cause wear and deformation of the contact surface, leading to problems such as poor contact, loosening, or even conductivity failure. In severe cases, it may cause the device to leak electricity, posing a great safety risk. In addition, when the adapter is not in use, the exposed E-pole conductive plates at the bottom are not protected and are easily damaged by collisions and squeezing. At the same time, the sharp edges of the conductive plates may also scratch the user, which is not safe.

[0004] Therefore, overcoming the aforementioned shortcomings has become an important issue that urgently needs to be addressed by those skilled in the art. Utility Model Content

[0005] This invention overcomes the shortcomings of the above-mentioned technologies and provides an adapter with a retractable E-pole conductive spring.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An adapter with a retractable E-polar conductive spring includes a socket end and a power-receiving end connected to the lower end of the socket end. The socket end includes a rotating ring and a fixed base connected to the lower end of the rotating ring. The power-receiving end includes a guide body connected to the lower end of the fixed base. The fixed base is rotatably connected to the rotating ring. The adapter also includes an E-polar conductive spring and a driving component for cooperating with the rotating ring to drive the E-polar conductive spring to move. Rotating the rotating ring can drive the E-polar conductive spring to unfold / retract relative to one of the left or right sides of the guide body.

[0007] Furthermore, an E-polar conductive sleeve is also installed on the fixing base. The upper end of the E-polar conductive spring extends upward through the fixing base and connects to the upper and lower ends of the E-polar conductive sleeve, which extend into the guide body. The E-polar conductive sleeve and the E-polar conductive spring are integrally formed.

[0008] Furthermore, the driving component includes a rotating shaft, a driving rod connected to the upper end of the rotating shaft, and a top block connected to the lower end of the rotating shaft. The fixed base includes a fifth through hole for the driving rod to pass through. A second baffle is provided on the inner side wall of the rotating ring. Two second baffles are symmetrically arranged on both sides of the rotating shaft. A limiting space for the movement of the driving rod is formed between the two second baffles. The E-polar conductive spring includes a contact piece. A sixth through hole is provided on the side wall of the guide body for the contact piece to pass through.

[0009] Furthermore, the driving component is rotatably connected between the guide body and the fixed seat via a rotating shaft. The fixed seat is provided with a first connecting post, and the guide body is provided with a second connecting post on its bottom inner wall. The rotating shaft includes a third connecting shaft at both ends, and the third connecting shaft at both ends is rotatably connected to the first connecting post and the second connecting post, respectively.

[0010] Furthermore, the adapter also includes a snap-fit ​​structure for locking the adapter into the power rail.

[0011] Furthermore, the latching structure includes a first latch and a second latch that can extend / retract relative to the side wall of the guide body, a button for simultaneously driving the first latch and the second latch to extend relative to the side wall of the guide body, and a reset member for simultaneously driving the first latch and the second latch to retract relative to the side wall of the guide body. The first latch and the second latch are symmetrically arranged. The button is exposed on the outer peripheral wall of the fixing base. The two side walls of the guide body are respectively provided with seventh through holes for the first latch and the second latch to pass through.

[0012] Furthermore, the buckle structure also includes a Z-shaped linkage rod and a hook-shaped linkage rod. The first locking block and the button are integrally formed on the Z-shaped linkage rod, and the second locking block is integrally formed on the hook-shaped linkage rod. The hook-shaped linkage rod includes a straight rod, a hook portion connected to the lower end of the straight rod, and a fourth connecting shaft disposed between the two. The hook-shaped linkage rod is hinged to the guide body through the fourth connecting shaft. The second locking block is disposed on the straight rod. The straight rod abuts against the fixed seat through a reset member. The hook portion bends inward and abuts against the Z-shaped linkage rod.

[0013] Furthermore, the reset element is a spring.

[0014] This application also provides a track socket, including the adapter described herein, and a power track including a power outlet.

[0015] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the fixed base and rotating ring are rotatably connected. The adapter features an E-pole conductive spring and a driving component that engages with the rotating ring to move the E-pole conductive spring. Rotating the rotating ring allows the E-pole conductive spring to unfold / retract relative to one side of the guide body. This technical solution, through its innovative side-retractable E-pole conductive spring and matching structure, comprehensively optimizes the grounding system performance of the power rail and adapter, offering significant advantages over existing technologies. Regarding safety, the grounding conductive sheet is positioned on both sides of the power rail's access port and encased in the rail structure. Furthermore, the E-pole conductive spring is retracted into the guide body when not in use, significantly reducing the possibility of foreign object intrusion and effectively preventing grounding failure due to foreign object accumulation. In the retracted state, the spring is completely hidden, reducing the risk of accidental injury to the user. In terms of conductivity reliability, the elastic E-pole conductive spring and grounding conductive sheet form a stable elastic contact, reducing wear from repeated insertions and removals. It maintains good conductivity even after multiple uses and is compatible with different types of power rails, ensuring reliable contact even with slight rail deformation or dimensional differences. In terms of ease of use, a single rotation of the rotating ring synchronously drives the E-pole conductive spring and other conductive components, simplifying the operation process. It is also compatible with various power outlet types and offers strong spatial adaptability. Regarding maintenance, the spring automatically cleans its contact surface during extension and retraction, reducing the need for manual maintenance. The integrated structure also facilitates modular replacement, lowering maintenance difficulty. In summary, this technical solution achieves comprehensive improvements in safety protection, conductivity stability, ease of use, and maintenance costs, making it suitable for various scenarios with high electrical safety requirements. Attached Figure Description

[0016] Figure 1 This is a 3D view of the adapter and power rail in the assembled state.

[0017] Figure 2 This is an exploded view of the adapter in this case.

[0018] Figure 3 This is one of the structural diagrams of the adapter in this case, behind some components of the concealed socket end box guide.

[0019] Figure 4 This is the second structural diagram of the adapter in this case, behind some components of the concealed socket terminal box guide.

[0020] Figure 5 This is a front view of the adapter and power rail in the assembled state.

[0021] Figure 6 This is the case Figure 5 A cross-sectional view along the AA direction.

[0022] Figure 7 This is a schematic diagram of the overall structure of the adapter in this case.

[0023] Figure 8 This is a schematic diagram of the structure of the E-polar conductive spring and the driving component in the linkage state of this case.

[0024] Figure 9 This is a schematic diagram of the buckle structure in this case. Detailed Implementation

[0025] The following examples provide a more detailed description of the features and other related characteristics of this utility model, to facilitate understanding by those skilled in the art: For ease of description and understanding, please refer to the orientation shown in the attached diagram for descriptions related to placement, such as front, back, top, bottom, left, right, outside, and inside.

[0026] Reference Figures 1-9 As shown, this invention provides an adapter, including a socket end 101 and a power-taking end 102 connected to the lower end of the socket end 101. The socket end 101 includes a rotating ring 1. The socket end 101 also includes a fixed base 2 connected to the lower end of the rotating ring 1. The rotating ring 1 is a component for providing rotational operation for the user, while the fixed base 2 is used to support and install the internal components of the adapter. To facilitate manufacturing and ensure a certain degree of rigidity, the rotating ring 1 and the fixed base 2 are both integrally molded. The power-taking end 102 includes a guide body 3 connected to the lower end of the fixed base 2. The guide body 3 is designed as a long strip for inserting into and electrically connecting to the power rail 200, while also providing a guiding function. The fixed base 2 and the rotating ring 1 are rotatably connected to ensure that the rotating ring 1 can rotate relative to the fixed base 2, realizing the linkage operation described later.

[0027] The adapter in this case also includes an E-pole conductive spring 7 and a drive component 8 for cooperating with the rotating ring 1 to drive the movement of the E-pole conductive spring 7. The E-pole conductive spring 7 is used to connect to the grounding conductive plate of the power rail to ensure electrical safety. Rotating the rotating ring 1 can drive the E-pole conductive spring 7 to unfold / retract on one side of the guide body 3. The E-pole conductive spring 7 achieves reliable connection and disconnection, ensuring both electrical safety and ease of use. An E-pole conductive socket 71 is also installed on the fixing base 2. The upper end of the E-pole conductive spring 7 extends upward through the fixing base 2 and connects to the upper and lower ends of the E-pole conductive socket 71, which extends into the guide body 3. The E-pole conductive socket 71 serves as a fixed contact point to connect to the E-pole pin of the power plug and conducts current to the grounding conductive plate of the power rail through the E-pole conductive spring 7. The E-pole conductive socket 71 and the E-pole conductive spring 7 are integrally formed.

[0028] Traditional power rails, due to their narrow power outlets, typically have a fixed grounding electrode (E-pole) at the bottom center of the power outlet. The adapter's E-pole is also rigid and fixed at the bottom of the guide, unable to extend or retract. This structure allows the adapter to directly contact the grounding conductive sleeve on the power rail upon insertion. While convenient, this makes it easy for foreign objects to enter through the power outlet, jamming the grounding conductive sleeve and causing the E-pole to fail to insert. Furthermore, this connection method, under prolonged insertion and removal friction, can lead to severe wear on the E-pole and grounding conductive sleeve, resulting in loosening, poor contact, or contact failure, posing a significant safety hazard. Storing the adapter separately when not in use is also cumbersome, as the exposed E-pole is easily damaged accidentally and can cause scratches to the user. The side-retractable E-pole conductive spring 7 in this design facilitates power connection and effectively solves the above problems, offering advantages such as convenient storage, protection of the E-pole conductive spring 7, and prevention of wear. It is understandable that when the E-pole conductive spring 7 of the adapter in this case is equipped, the corresponding grounding conductive sleeve or conductive sheet of the power rail should also be set at one or both sides of the power rail power take-off port. Since the grounding conductive sleeve or conductive sheet is set on the side and is wrapped by the power rail, it is not easy for foreign objects to enter, thus ensuring the stability of the power connection.

[0029] In addition, when facing a power rail with a large hollow power outlet, it is difficult to find the contact point of the E-polar conductive sheet. At the same time, it is also necessary to ensure the prevention of foreign object intrusion and safety. Therefore, the structure of the side-retractable E-polar conductive spring 7 in this case is convenient to connect with the power rail, the connection is stable, and it is easy to use.

[0030] Please refer to Figures 1-6 , Figure 8 , Figure 9 As shown, specifically, the driving component 8 is an integrally formed structure, including a rotating shaft 81, a driving rod 82 connected to the upper end of the rotating shaft 81, and a top block 83 connected to the lower end of the rotating shaft 81. The E-polar conductive spring 7 includes a contact piece 72, and a sixth through hole 33 is provided on the side wall of the guide body 3 for the contact piece 72 to pass through. The rotating shaft 81 serves as the rotation center of the driving component 8. Through the rotation of the third connecting shafts 811 at both ends on the connecting column, the swing of the driving rod 82 is converted into the circumferential motion of the top block 83, so that the top block 83 can press or release the contact piece 72.

[0031] The fixed base 2 includes a fifth through hole 24 through which the drive rod 82 passes. A second baffle 12 is provided on the inner wall of the rotating ring 1. Two second baffles 12 are symmetrically arranged on both sides of the rotating shaft 81, forming a limiting space 121 between the two second baffles 12 for the drive rod 82 to move. The drive rod 82 is the force transmission medium between the rotating ring 1 and the rotating shaft 81. When the rotating ring 1 rotates, the second baffles 12 push the drive rod 82 to swing within the limiting space, thereby driving the rotating shaft 81 to rotate, causing the top block 83 to press against or release the contact piece 72. The limiting space 121 restricts the maximum swing angle of the drive rod 82, preventing excessive rotation that could cause structural damage and instability in the unfolding / retraction of the contact piece 72.

[0032] The driving component 8 is rotatably connected between the guide body 3 and the fixed base 2 via a rotating shaft 81. The fixed base 2 is provided with a first connecting post 25, and the guide body 3 has a second connecting post 34 on its bottom inner wall. The rotating shaft 81 includes third connecting shafts 811 at both ends, which are rotatably connected to the first connecting post 25 and the second connecting post 34, respectively. Specifically, both the first connecting post 25 and the second connecting post 34 have connecting holes for the insertion of the third connecting shafts 811. These connecting holes provide support points for the rotating shaft to rotate. The dual-point support of the first connecting post 25 and the second connecting post 34 ensures that the rotating shaft 81 rotates without offset, preventing misalignment between the top block 83 and the contact piece 72. The tight rotational fit between the connecting holes and the third connecting shafts 811 ensures smooth and uninterrupted rotation. When the top block 83 rotates with the shaft 81, its front end presses against the contact piece 72, causing the contact piece 72 to overcome its own elasticity and pass through the sixth through hole 33 to emerge from the side wall of the guide body and connect with the grounding conductive piece of the power rail. When the shaft 81 rotates in the opposite direction, the top block releases the pressure on the contact piece 72 and detaches from the contact piece. The contact piece 72 retracts by its own elasticity and is hidden in the sixth through hole 33, without being exposed on the side wall of the guide body 3. This ensures that the contact piece is completely hidden inside the side wall of the guide body when stored, effectively preventing external factors from damaging the contact piece 72, and also facilitating the storage of the adapter.

[0033] Furthermore, referring to Figures 1-6 , Figure 8 , Figure 9As shown, the adapter 100 in this case also includes a snap-fit ​​structure 9 for securely mounting the adapter 100 onto the power rail 200, ensuring the stability of the connection. Specifically, the snap-fit ​​structure 9 includes a first snap block 91 and a second snap block 92 that can extend / retract relative to the side wall of the guide body 3, a button 93 for simultaneously driving the first snap block 91 and the second snap block 92 to extend relative to the side wall of the guide body 3, and a reset member 94 for simultaneously driving the first snap block 91 and the second snap block 92 to retract relative to the side wall of the guide body 3. The first snap block 91 and the second snap block 92 are respectively used to snap onto both sides of the power outlet 201 of the power rail 200. The first snap block 91 and the second snap block 92 are symmetrically arranged to ensure consistency and stability of the snap-fit. The button 93 is exposed on the outer peripheral wall of the fixing base 2 for convenient user pressing operation. Seventh through holes 35 are respectively provided on the two side walls of the guide body 3 for the first locking block 91 and the second locking block 92 to pass through. The seventh through holes 35 provide a precise telescopic channel for the first locking block 91 and the second locking block 92, and restrict the movement direction of the first locking block 91 and the second locking block 92 to only horizontal telescopic movement along the side wall of the guide body 3. In specific implementation, for ease of manufacturing and snap-fit, the first locking block 91 and the second locking block 92 are the same in size and structure, and the two seventh through holes 35 are also the same in size and structure. The reset member 94 provides a continuous thrust for the extension of the first locking block 91 and the second locking block 92, ensuring that the locking blocks can automatically pop out and lock after the adapter 100 is inserted into the power rail 200.

[0034] Continue to refer to Figures 1-6 , Figure 8 , Figure 9As shown, this is a preferred embodiment of the snap-fit ​​structure 9 in this case. In this embodiment, the snap-fit ​​structure 9 also includes a Z-shaped linkage rod 901 and a hook-shaped linkage rod 902. The first locking block 91 and the button 93 are integrally formed on the Z-shaped linkage rod 901, and the second locking block 92 is integrally formed on the hook-shaped linkage rod 902. This integrally formed structure of the Z-shaped linkage rod 901 and the hook-shaped linkage rod 902 reduces the number of parts, avoids action delays caused by assembly gaps, helps reduce production costs, and facilitates disassembly and assembly. The Z-shaped structure of the Z-shaped linkage rod 901 utilizes the lever principle to amplify the pressing force, making operation more effortless. The hook-shaped linkage rod 902, as the driven linkage rod, converts the thrust of the Z-shaped linkage rod into the retraction action of the second locking block 92, while simultaneously receiving the rebound thrust of the reset member 94, driving the second locking block 92 to extend. The hook-shaped linkage rod 902 includes a straight rod 9021, a hook portion 9022 connected to the lower end of the straight rod 9021, and a fourth connecting shaft 9023 disposed between the two. The hook-shaped linkage rod 902 is hinged to the guide body 3 via the fourth connecting shaft 9023, and the second locking block 92 is disposed on the straight rod 9021. The straight rod 9021 abuts against the fixed seat 2 via the reset member 94, and the hook portion 9022 bends inward to abut against the Z-shaped linkage rod 901. In specific implementation, the reset member 94 is a spring, which can be called the second spring in this case for easy distinction.

[0035] As described above, the first locking block 91, the second locking block 92, and the reset member 94 work together to form an interconnected lever structure. Specifically, the Z-shaped linkage rod 901, the hook-shaped linkage rod 902, and the spring work together to form an interconnected lever structure. When the user presses the button into the guide body, one end of the Z-shaped linkage rod 901 abuts against the hook portion 9022, and the hook-shaped linkage rod 902 rotates through the fourth connecting shaft 9023. The straight rod 9021 compresses the spring inward toward the fixed seat. Since the first locking block 91 and the button 93 are integrally formed on the Z-shaped linkage rod 901, and the second locking block 92 is integrally formed on the straight rod 9021, the first locking block 91 and the second locking block 92 retract simultaneously. When the user releases button 93, the spring force drives the straight rod 9021 to rotate outward, and the hook part 9022 is driven to move inward, pushing the Z-shaped linkage rod 901 outward. Then, the first locking block 91 and the second locking block 92 simultaneously extend outward from the guide body 3, locking the power rail. The cooperation of the Z-shaped linkage rod 901 and the hook-shaped linkage rod 902 forms a stable linkage lever structure, ensuring that the first locking block 91 and the second locking block 92 extend and retract synchronously, significantly improving the ease of operation and locking stability of the buckle structure 9.

[0036] like Figures 1-9As shown, this invention also provides a track socket, including the adapter 100 described herein, and a power track 200. In a specific implementation, the power track 200 includes a power outlet 201. In some embodiments, a grounding conductive piece is provided on both sides or one side of the power outlet 201 of the power track 200 for contacting the E-pole conductive spring 7. When the adapter 100 is inserted from the power outlet 201, rotating the rotating ring 1 drives the contact piece 72 of the E-pole conductive spring 7 to pop out and abut against the grounding conductive piece inside the power track 200, thus connecting the two. Simultaneously, the first locking block 91 and the second locking block 92 on both sides of the adapter 100 respectively engage with the power track 100 inserted from both sides of the power outlet 201, thereby limiting and preventing the adapter 100 from detaching.

[0037] As stated above, this case protects an adapter and track socket with a retractable E-pole conductive spring. All technical solutions that are identical or similar to this case should be considered to fall within the scope of protection of this case.

Claims

1. An adapter with a retractable E-pole conductive spring, comprising a socket end (101) and a power-taking end (102) connected to the lower end of the socket end (101), wherein the socket end (101) includes a rotating ring (1), characterized in that: The socket end (101) also includes a fixed base (2) connected to the lower end of the rotating ring (1). The power supply end (102) includes a guide body (3) connected to the lower end of the fixed base (2). The fixed base (2) is rotatably connected to the rotating ring (1). The adapter also includes an E-polar conductive spring (7) and a driving member (8) for cooperating with the rotating ring (1) to drive the E-polar conductive spring (7) to move. Rotating the rotating ring (1) can drive the E-polar conductive spring (7) to unfold / fold up relative to one side of the left and right sides of the guide body (3).

2. The adapter with a retractable E-pole conductive spring as described in claim 1, characterized in that: The fixed base (2) is also equipped with an E-polar conductive sleeve (71). The upper end of the E-polar conductive spring (7) extends upward through the fixed base (2) and connects to the upper and lower ends of the E-polar conductive sleeve (71) and extends into the guide body (3). The E-polar conductive sleeve (71) and the E-polar conductive spring (7) are integrally formed.

3. The adapter with a retractable E-pole conductive spring as described in claim 1, characterized in that: The driving component (8) includes a rotating shaft (81), a driving rod (82) connected to the upper end of the rotating shaft (81), and a top block (83) connected to the lower end of the rotating shaft (81). The fixed base (2) includes a fifth through hole (24) through which the driving rod (82) passes. A second baffle (12) is provided on the inner side wall of the rotating ring (1). Two second baffles (12) are symmetrically arranged on both sides of the rotating shaft (81). A limiting space (121) for the driving rod (82) to move is formed between the two second baffles (12). The E-polar conductive spring (7) includes a contact piece (72). A sixth through hole (33) is provided on the side wall of the guide body (3) for the contact piece (72) to pass through.

4. The adapter with a retractable E-pole conductive spring as described in claim 3, characterized in that: The driving component (8) is rotatably connected between the guide body (3) and the fixed seat (2) via a rotating shaft (81). The fixed seat (2) is provided with a first connecting post (25), and the guide body (3) is provided with a second connecting post (34) on its bottom inner wall. The rotating shaft (81) includes a third connecting shaft (811) at both ends, and the third connecting shaft (811) at both ends is rotatably connected to the first connecting post (25) and the second connecting post (34) respectively.

5. An adapter with a retractable E-pole conductive spring according to any one of claims 1-4, characterized in that: The adapter (100) also includes a snap-fit ​​structure (9) for locking the adapter (100) into the power rail (200).

6. The adapter with a retractable E-pole conductive spring as described in claim 5, characterized in that: The latching structure (9) includes a first latch (91) and a second latch (92) that can extend / retract relative to the side wall of the guide body (3), a button (93) for simultaneously driving the first latch (91) and the second latch (92) to extend relative to the side wall of the guide body (3), and a reset member (94) for simultaneously driving the first latch (91) and the second latch (92) to retract relative to the side wall of the guide body (3). The first latch (91) and the second latch (92) are symmetrically arranged. The button (93) is exposed on the outer peripheral wall of the fixing base (2). The two side walls of the guide body (3) are respectively provided with a seventh through hole (35) for the first latch (91) and the second latch (92) to pass through.

7. The adapter with a retractable E-pole conductive spring as described in claim 6, characterized in that: The buckle structure also includes a Z-shaped linkage rod (901) and a hook-shaped linkage rod (902). The first locking block (91) and the button (93) are integrally formed on the Z-shaped linkage rod (901), and the second locking block (92) is integrally formed on the hook-shaped linkage rod (902). The hook-shaped linkage rod (902) includes a straight rod (9021), a hook portion (9022) connected to the lower end of the straight rod (9021), and a fourth connecting shaft (9023) disposed between the two. The hook-shaped linkage rod (902) is hinged to the guide body (3) through the fourth connecting shaft (9023). The second locking block (92) is disposed on the straight rod (9021). The straight rod (9021) abuts against the fixed seat (2) through the reset member (94). The hook portion (9022) bends inward and abuts against the Z-shaped linkage rod (901).

8. The adapter with a retractable E-pole conductive spring as described in claim 7, characterized in that: The reset element (94) is a spring.

9. A track socket comprising the adapter (100) according to any one of claims 1-8, characterized in that: It also includes a power rail (200) which includes a power outlet (201).

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