Adapter capable of adjusting power taking distance and track socket

Abstract

The invention relates to an adapter capable of adjusting the power taking distance and a track socket, and belongs to the technical field of track sockets. The adapter comprises an electricity taking part used for being inserted into an electric power track to take electricity, and a power supply part electrically connected with the electricity taking part and used for supplying power to an electric appliance. The power taking part comprises a fixed power taking arm and a movable power taking arm, the movable power taking arm and the fixed power taking arm are in sliding connection and are always kept in electric connection, the movable power taking arm can slide relative to the fixed power taking arm to adjust the power taking distance, and the movable power taking arm can be relatively fixed after being adjusted. An adjusting assembly formed by meshing a worm and a rack can be arranged between the fixed electricity taking arm and the movable electricity taking arm, and accurate adjusting and self-locking are achieved. According to the adapter, the power taking length of the adapter can be flexibly adjusted through the slidable movable power taking arm structure, so that the adapter is adaptive to decorative cover plates with different thicknesses on the surface of the power track, reliable contact between the power taking contact and a conductive conductor in the track is ensured, and the universality and the installation flexibility of the adapter are effectively improved.

Description

Technical Field

[0001] This application relates to the technical field of track sockets, and more particularly to an adapter with adjustable power supply distance and a track socket. Background Technology

[0002] Track sockets are a new type of socket product, mainly consisting of a power track and an adapter. The power track, also known as a power rail, is typically surface-mounted on walls, desktops, or baseboards. The power track includes a track housing 201 and a mounting backplate on its back. The mounting backplate is fixed to the mounting surface, and the track housing 201 is snapped into the mounting backplate for overall fixation. The outer surface of the track housing 201 has a track opening along its length, and an internal track cavity is provided, communicating with the track opening. A terminal block and a conductive conductor 203 are installed inside the track cavity. One end of the terminal block is connected to a power source, and the other end is connected to the conductive conductor 203, establishing an electrical connection between the conductive conductor 203 and an external power source. The adapter's power-taking arm is inserted into the track cavity through the track opening and contacts the conductive conductor 203 to draw power.

[0003] To achieve a concealed installation effect, a decorative cover plate is often added to the surface of the track opening after the power track is installed. The decorative cover plate has a decorative cover plate opening that corresponds to the track opening. The adapter passes through the decorative cover plate opening and the track opening in sequence to enter the track cavity to draw power.

[0004] Regarding the aforementioned technologies, the inventors discovered that the varying thicknesses of the decorative cover plates atop the track opening result in varying opening depths. If a stable connection between the adapter and the conductive conductor 203 within the track cavity is required, the length of the adapter's power-taking arm must be equal to the sum of the track opening depth and the track cavity depth. In existing technologies, the adapter's power-taking arm length is fixed, making it impossible to adapt to decorative cover plates of different thicknesses. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies where the adapter's power-taking arm length is fixed and cannot adapt to cover plates of different thicknesses, thus preventing the adapter from being inserted into the power rail for power extraction, this application provides an adapter with adjustable power-taking distance and a rail socket. The adjustable-length power-taking section design allows the adapter to flexibly adapt to various installation conditions on the power rail surface, ensuring stable power extraction.

[0006] The adjustable power-taking distance adapter provided in this application adopts the following technical solution: An adapter with adjustable power collection distance includes: a power collection unit for inserting into an electric rail to collect power; and a power supply unit electrically connected to the power collection unit for supplying power to an appliance plug when it is inserted. The power collection unit includes a fixed power collection arm and a movable power collection arm, the movable power collection arm being slidably connected to the fixed power collection arm and the two always maintaining an electrical connection. The movable power collection arm is slidable relative to the fixed power collection arm and can be fixed relative to the fixed power collection arm after adjustment.

[0007] By adopting the above technical solution, users can flexibly adjust the overall power-taking length of the adapter by sliding the movable power-taking arm according to the actual thickness of the cover plate on the power rail surface. This ensures that the power-taking contacts can reliably contact the conductive conductor 203 inside the rail, effectively solving the adaptation problem caused by the different cover plate thicknesses and greatly improving the adapter's versatility and installation flexibility. Therefore, this application provides an adapter with adjustable power-taking distance and a rail socket.

[0008] Optionally, an adjustment assembly is provided between the fixed power-collecting arm and the movable power-collecting arm. The adjustment assembly includes a worm gear and a rack. The worm gear is rotatably mounted on the fixed power-collecting arm, and the rack is fixedly mounted on the movable power-collecting arm. The worm gear meshes with the rack.

[0009] By adopting the above technical solution and utilizing the meshing transmission of a worm gear and rack, precise and effortless adjustment of the extension length of the movable power-collecting arm can be achieved. The reverse self-locking characteristic of the worm gear transmission allows the position to be automatically locked after adjustment, eliminating the need for an additional locking mechanism, making operation convenient and highly reliable.

[0010] Optionally, the fixed power-collecting arm includes a fixed power-collecting sleeve and a fixed power-collecting conductor disposed therein; the movable power-collecting arm includes a movable power-collecting component and a movable power-collecting conductor disposed therein; the movable power-collecting component is slidably installed inside the fixed power-collecting sleeve, and the movable power-collecting conductor and the fixed power-collecting conductor maintain contact and conduction.

[0011] By adopting the above technical solution, a specific and reliable method for implementing sliding and electrical connections is provided, which is compact in structure and easy to assemble.

[0012] Optionally, one of the fixed power-collecting conductor and the movable power-collecting conductor is configured as a clamping structure, and the other is slidably inserted into the clamping structure.

[0013] By adopting the above technical solution, the elastic clamp structure ensures that the movable power-taking conductor is always in close contact with the fixed power-taking conductor during the sliding process, thus ensuring the continuity and stability of current transmission, while also minimizing sliding resistance.

[0014] Optionally, a guide member is provided inside the fixed power-collecting sleeve along the sliding direction, and a guide member is provided on the movable power-collecting component for sliding cooperation with it.

[0015] By adopting the above technical solution, the guide structure ensures that the movable power-collecting arm moves smoothly in a straight line during the extension and retraction process, preventing twisting or jamming and making the adjustment process smooth.

[0016] Optionally, the fixed power-receiving sleeve is provided with a limit marker, and the movable power-receiving component is provided with a limit marker mating component. The two are slidably mated to indicate the relative position and limit the extreme movement position.

[0017] By adopting the above technical solutions, the limit markings make it easier for users to observe and accurately control the adjustment amount, while the limit position restriction prevents the moving parts from moving excessively and getting detached or damaged, thus improving the safety and service life of the product.

[0018] A track socket includes a power track and an adapter with adjustable power draw distance as described in any of the preceding claims, the adapter being slidably mounted on the power track.

[0019] By adopting the above technical solution, the adapter of this application is applied to the track socket system, so that the entire socket system can be perfectly adapted to installation scenarios with decorative cover plates of different thicknesses, solving the adaptation problem of on-site installation and expanding the scope of application of the product.

[0020] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a fixed power-collecting arm and a movable power-collecting arm that can slide relative to each other, the power-collecting distance of the adapter can be infinitely or precisely adjusted, making it adaptable to cover plates of different thicknesses on the surface of the power rail, ensuring the reliability of power collection and significantly improving the versatility of the product. 2. The adjustment component, which uses a worm gear and rack meshing, makes the adjustment process labor-saving and precise, and has a self-locking function. It is easy to operate and the adjusted state is stable. 3. Through specific designs such as clip-on conductor contacts, guiding structures, and limit markings, the stability of electrical connections, smooth movement, and safe and intuitive use during sliding are ensured, thereby improving the overall performance of the product and the user experience. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the overall appearance of the adjustable power-collecting distance adapter in the embodiments of this application, showing the external shape of the adapter and the layout relationship of the main parts such as the fixed power-collecting arm, the movable power-collecting arm, and the adjustment components.

[0022] Figure 2 yes Figure 1The exploded structural diagram of the adapter clearly shows the disassembled state and assembly relationship of the various components of the adapter (such as the fixed power supply sleeve, the movable power supply component, the adjustment component, the guide component, the limit marker component, etc.).

[0023] Figure 3 yes Figure 1 The cross-sectional structural diagram of the adapter reveals the internal structure of the adapter, especially the connection method between the fixed power supply conductor and the movable power supply conductor, the meshing relationship of the adjustment components, and the internal arrangement of the sliding guide structure.

[0024] Figure 4 yes Figure 1 The diagram shows the fixed and movable power supply conductors of the adapter, highlighting the clip structure of the fixed power supply conductor and the plug-in connection method of the movable power supply conductor to illustrate the principle of electrical connection.

[0025] Figure 5 This is a schematic diagram of a track socket with an adjustable power distance adapter in an embodiment of this application, showing the overall application scenario of the adapter being installed on a power track, including the relative positions of the power track, decorative cover plate, and adapter.

[0026] Figure 6 yes Figure 5 The diagram shows the relationship between the adapter and the power rail. The cross-section shows the specific structural relationship of the adapter's power-taking part being inserted into the power rail through the opening of the decorative cover plate, and its power-taking contacts contacting the conductive conductors inside the rail to obtain power.

[0027] Explanation of reference numerals in the attached drawings: 100, adapter; 200, electric rail; 201, rail housing; 202, insulating support; 203, conductive conductor; 300, decorative cover plate; 301, decorative cover plate opening; 1. Power take-off section; 11. Fixed power take-off arm; 111. Fixed power take-off sleeve; 112. Fixed power take-off conductor; 12. Movable power take-off arm; 121. Movable power take-off component; 122. Movable power take-off conductor; 2. Power supply section; 21. Power supply base; 22. Power supply hardware; 23. Power supply housing; 3. Adjustment assembly; 31. Worm gear; 32. Rack; 4. Guide component; 5. Guide mating component; 6. Limiting indicator component; 7. Limiting indicator mating component. Detailed Implementation

[0028] The following combination Figure 1-6 This application will be described in further detail.

[0029] Example 1: An adapter with adjustable power extraction distance This application discloses an adapter with adjustable power extraction distance, such as... Figures 1 to 4As shown, it is mainly used to cooperate with the power rail 200 to form a rail socket system. The core of this adapter 100 is that the length of its power taking part 1 (i.e., the power taking distance) can be adjusted according to actual installation requirements. In particular, it is designed to adapt to the different thicknesses of the decorative cover plates 300 covering the surface of the power rail 200, ensuring that the power taking contacts can reliably contact the conductive strip inside the rail.

[0030] Reference Figures 1 to 3 The adapter 100 mainly includes a power-taking section 1 and a power-supply section 2. The power-supply section 2 includes a power supply base 21, power supply hardware 22 mounted on the power supply base 21, and a power supply housing 23 covering the power supply base 21. The power supply base 21 has a mounting slot for mounting the power supply hardware 22, which is stably installed within the mounting slot. The power supply housing 23 is a cylindrical shape with one open end and is hollow inside. The power supply base 21 is placed at the open end of the power supply housing 23 and seals the opening, at which point the hardware is placed within the hollow cavity of the power supply housing 23. The power supply housing 23 has at least one set of power outlets (such as a five-hole socket, USB charging port, etc.) for the plug of an electrical appliance to be inserted into and contact the power supply hardware 22 to obtain power.

[0031] Reference Figures 2 to 4 The power-gathering unit 1 is the core improvement of this embodiment, which includes a fixed power-gathering arm 11 and a movable power-gathering arm 12. The fixed power-gathering arm 11 constitutes the main body and mounting base of the power-gathering unit 1.

[0032] Specifically, the fixed power-collecting arm 11 includes a fixed power-collecting sleeve 111 made of insulating material (such as engineering plastic), and a fixed power-collecting conductor 112 encapsulated inside the fixed power-collecting sleeve 111. The main body of the fixed power-collecting conductor 112 is placed inside the cavity of the fixed power-collecting sleeve 111. The fixed power-collecting conductor 112 is a copper conductive electrode plate. One end of it, near the power supply section 2, passes through the power supply base 21 and is connected to the corresponding electrode power supply hardware 22 mounted on the power supply base 21. The other end is electrically connected to the movable power-collecting arm 12 and finally contacts the conductive strip in the power rail 200 through the power-collecting contact provided at the end of the movable power-collecting arm 12.

[0033] Reference Figures 2 to 4The movable power-taking arm 12 includes a movable power-taking component 121 made of insulating material and a movable power-taking conductor 122 encapsulated inside the movable power-taking component 121. One end of the movable power-taking conductor 122, away from the fixed power-taking arm 11, extends from the side wall of the movable power-taking component 121 to form a power-taking contact for contacting the conductive strip within the power rail 200. The cross-sectional shape of the movable power-taking component 121 matches the inner cavity of the fixed power-taking sleeve 111 and is slidably installed within the inner cavity of the fixed power-taking sleeve 111. Through this sliding fit, the movable power-taking arm 12 can extend or retract relative to the fixed power-taking arm 11 along its axial direction (i.e., the power-taking depth direction), thereby changing the overall power-taking length of the adapter 100 to adapt to installation environments at different depths.

[0034] To ensure reliable current conduction during sliding, the movable current-collecting conductor 122 and the fixed current-collecting conductor 112 maintain sliding contact and conduction at all times. In this embodiment, as... Figure 4 As shown, the main structure of the fixed power-collecting conductor 112, placed within the cavity of the fixed power-collecting sleeve 111, is a clamping structure (for example, composed of two parallel elastic copper sheets forming a flat guide groove). The clamping structure can be formed by stamping and bending a copper sheet. The movable power-collecting conductor 122 is configured as a flat, elongated copper sheet, which is slidably inserted into the guide groove of the clamping structure. Utilizing the clamping force of the elastic copper sheet, stable electrical contact is achieved for the movable power-collecting conductor 122 during sliding, while simultaneously reducing resistance and ensuring smooth adjustment.

[0035] Reference Figure 1 and Figure 2 To ensure the smoothness and straightness of the sliding of the movable power-collecting component 121 within the fixed power-collecting sleeve 111, and to prevent twisting or jamming, at least one pair of guide members 4 (e.g., raised guide rails or guide ribs) are provided on the inner wall of the fixed power-collecting sleeve 111 along its length direction (i.e., the sliding direction). Correspondingly, guide mating members 5 (e.g., grooves or guide slots) are provided on the outer wall of the movable power-collecting component 121 to slide and engage with the guide members 4. The number of guide members 4 and guide mating members 5 are both multiple and correspond one-to-one. Preferably, as shown in the example... Figure 1 As shown, there are four guide members 4 and four guide mating members 5. The guide members 4 are distributed on both sides of the inner cavity of the fixed power-collecting sleeve 111, and the guide mating members 5 are correspondingly distributed on both sides of the movable power-collecting member 121. To further enhance the guiding stability, the guide mating members 5 on both sides of the movable power-collecting member 121 can be staggered (i.e., not on the same cross-section), which helps to balance the lateral force and makes the sliding smoother.

[0036] Reference Figure 1 and Figure 2To facilitate user observation and adjustment, and to prevent excessive sliding that could cause components to detach or be damaged, a long, narrow window is provided on the side wall of the fixed power-receiving sleeve 111 as a limiting indicator 6. A protrusion is provided at the corresponding position on the movable power-receiving component 121 as a limiting indicator mating component 7. Both the limiting indicator 6 and the limiting indicator mating component 7 are provided in two sets, and are arranged in a one-to-one correspondence. When the movable power-receiving component 121 slides, the limiting indicator mating component 7 moves within the window of the limiting indicator 6. The two ends of the window form sliding limit positions, preventing the movable power-receiving component 121 from completely detaching. Simultaneously, graduations can be printed on the edge of the window, which, in conjunction with the limiting indicator mating component 7, can visually indicate the current extension length, facilitating precise adjustment.

[0037] In this embodiment, the adjustment and fixation of the movable power-collecting arm 12 can be achieved through a simple friction locking or snap-fit ​​structure (not shown in the figure). For example, a threaded locking knob is provided on the fixed power-collecting sleeve 111, and the end of the knob presses against the movable power-collecting component 121, and tightening it will fix it.

[0038] The implementation principle of Embodiment 1 of this application is as follows: When a user needs to install the adapter 100 onto a power rail 200 with decorative cover plates 300 of varying thicknesses, firstly, according to the cover plate thickness, manually slide the movable power-taking arm 12. By observing the scale on the limit indicator 6 or by feeling, adjust the total length of the power-taking part 1 to be slightly greater than the sum of the rail opening and the cover plate thickness. Then, insert the power-taking part 1 into the rail opening, ensuring that the power-taking contacts at the ends of the fixed power-taking arm 11 and the movable power-taking arm 12 reliably contact the conductive strip inside the rail. This design effectively solves the problem of mismatched power-taking depth of the adapter 100 caused by varying cover plate thicknesses, and has strong versatility.

[0039] Example 2: Adapter 100 with worm gear 31, rack 32, and adjusting assembly 3 Based on Example 1, this example provides an adjustment scheme that is more precise, easier to operate, and has better self-locking properties.

[0040] like Figures 1 to 4 As shown, this embodiment differs from Embodiment 1 mainly in that: a precision adjustment assembly 3 is provided between the fixed power-collecting arm 11 (specifically, the fixed power-collecting sleeve 111) and the movable power-collecting arm 12 (specifically, the movable power-collecting component 121). The adjustment assembly 3 includes a worm gear 31 and a rack 32. The worm gear 31 is rotatably mounted longitudinally on the housing of the fixed power-collecting sleeve 111, with its axis direction being the same as the displacement direction of the movable power-collecting arm 12, and one end of it protruding from the end of the fixed power-collecting sleeve 111 away from the power supply unit 2, with a slot provided at the protruding end. The rack 32 is disposed on the side of the movable power-collecting component 121 along the sliding direction. The worm gear 31's worm threads mesh with the rack 32's teeth.

[0041] When the user needs to adjust the extension length of the movable power-collecting arm 12, they only need to use a tool (such as a screwdriver) or a manual knob to turn the worm gear 31. The worm gear 31 rotates along its own axis while remaining stationary in the axial direction. Due to the characteristics of the worm gear 31 drive, the rotation of the worm gear 31 will drive the meshing rack 32 to move linearly, thereby causing the entire movable power-collecting component 121 to extend or retract smoothly and precisely. The worm gear 31 drive has a large reduction ratio, making the adjustment process labor-saving and precise. More importantly, the worm gear 31 drive has a reverse self-locking characteristic, that is, the force of the rack 32 cannot drive the worm gear 31 to reverse. This means that once the adjustment stops, the movable power-collecting arm 12 will automatically lock in the current position without the need for an additional locking device, making the structure simpler and more reliable.

[0042] Preferably, such as Figure 1 and Figure 2 As shown, the number of adjustment components 3 can be set to two, and they are symmetrically arranged on both sides of the movable power-taking component 121. In one possible implementation, the two worm gears 31 can also rotate synchronously through a linkage shaft (not shown in the figure) to ensure that the forces on both sides of the movable power-taking component 121 are balanced, the sliding is more stable, and the jamming or wear caused by the force on one side is avoided.

[0043] Other structures in this embodiment, such as the clamp connection method between the fixed power-taking conductor 112 and the movable power-taking conductor 122, the guide structure, and the limit marking structure, can be the same as those in the embodiment, and will not be described again here.

[0044] Example 3: A track socket system This application also discloses a track socket system including the above-described adjustable power supply distance adapter 100.

[0045] Reference Figure 5 and Figure 6 The track socket system includes a power track 200 and at least one adapter 100 with adjustable power supply distance as described in the embodiments or examples.

[0046] The power rail 200 includes a rail housing 201, an insulating support 202, conductive conductors 203, and terminals (not shown in the figure). The rail housing 201 is typically elongated, with a rail opening along its length on the front, forming a rail cavity inside. The conductive conductors 203 (such as live wire, neutral wire, and ground wire) are installed side-by-side in the insulating support 202 within the rail cavity. The terminals are used to connect external power lines to the conductive conductors 203.

[0047] The power-collecting part 1 of the adapter 100 (fixed power-collecting arm 11 and movable power-collecting arm 12) is inserted into the track opening, and the power-collecting contacts at its ends make elastic contact with the conductive conductor 203 in the track cavity, thereby achieving power collection. The adapter 100 as a whole can slide along the length direction of the power track 200. The power-collecting contacts at the ends of the power-collecting part 1 make elastic contact with the conductive conductor 203 in the track cavity, thereby obtaining electrical energy. The adapter 100 can freely slide along the length direction of the track opening to any position required by the user.

[0048] The power rail 200 can be embedded inside the mounting surface of a wall, desktop, cabinet, etc. (concealed installation) or directly installed on its surface (surface installation). In actual installation, for aesthetic purposes, a decorative cover plate 300 (or cover plate) is often added to the surface of the rail opening after the power rail 200 is installed and fixed. The decorative cover plate 300 has a long strip decorative cover plate opening 301 corresponding to the rail opening. The adapter 100 needs to pass through the decorative cover plate opening 301 and the rail opening in sequence to draw power. The thickness of the decorative cover plate 300 may vary greatly depending on the decoration style or material.

[0049] Reference Figure 6 The adjustable power-taking distance adapter 100 of this application fully demonstrates its core advantages in this scenario. When the decorative cover 300 is thick, the user can manually or via the worm gear 31 slide the movable power-taking arm 12 in the extending direction to increase the total length of the power-taking part 1, ensuring that its power-taking contacts can pass through the deeper opening 301 of the decorative cover and still firmly contact the conductive conductor 203 inside the track cavity. Conversely, when the decorative cover 300 is thin or there is no decorative cover 300, the length of the power-taking part 1 can be shortened. This allows the same adapter 100 to perfectly adapt to various installation scenarios, greatly improving the product's versatility and installation flexibility.

[0050] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. An adapter with adjustable power extraction distance, characterized in that, include: Power extraction unit (1) is used to extract power by inserting it into the power rail (200); The power supply unit (2) is electrically connected to the power extraction unit (1) and is used to supply power to the plug of the electrical appliance when it is inserted. The power extraction unit (1) includes a fixed power extraction arm (11) and a movable power extraction arm (12). The movable power extraction arm (12) is slidably connected to the fixed power extraction arm (11) and the two are always electrically connected. The movable power extraction arm (12) can slide relative to the fixed power extraction arm (11) and can be fixed relative to the fixed power extraction arm (11) after adjustment.

2. The adapter (100) with adjustable power extraction distance according to claim 1, characterized in that: An adjustment assembly (3) is provided between the fixed power-collecting arm (11) and the movable power-collecting arm (12). The adjustment assembly (3) includes a worm gear (31) and a rack (32). The worm (31) is rotatably mounted on the fixed power-collecting arm (11), and the rack (32) is fixedly mounted on the movable power-collecting arm (12). The worm (31) meshes with the rack (32).

3. The adapter (100) with adjustable power extraction distance according to claim 2, characterized in that: The number of adjustment components (3) is at least one, and when there are at least two adjustment components (3), each adjustment component (3) is respectively disposed on both sides of the movable power taking arm (12).

4. The adapter (100) with adjustable power extraction distance according to claim 1, characterized in that: The fixed power-collecting arm (11) includes a fixed power-collecting sleeve (111) and a fixed power-collecting conductor (112) disposed within the fixed power-collecting sleeve (111); the movable power-collecting arm (12) includes a movable power-collecting component (121) and a movable power-collecting conductor (122) disposed within the movable power-collecting component (121); the movable power-collecting component (121) is slidably installed within the fixed power-collecting sleeve (111), and the movable power-collecting conductor (122) maintains contact and conduction with the fixed power-collecting conductor (112).

5. The adapter (100) with adjustable power extraction distance according to claim 4, characterized in that: One of the fixed power-collecting conductor (112) and the movable power-collecting conductor (122) is configured as a clip structure, and the other is slidably inserted into the clip structure.

6. The adapter (100) with adjustable power extraction distance according to claim 4, characterized in that: Inside the fixed power-collecting sleeve (111), a guide (4) is provided along the sliding direction of the movable power-collecting arm (12), and a guide engagement part (5) is provided on the movable power-collecting part (121) that slides with the guide (4).

7. The adapter (100) with adjustable power extraction distance according to claim 6, characterized in that: The number of the guide member (4) and the guide mating member (5) are both multiple and correspond one-to-one. The guide member (4) is distributed on both sides of the fixed power-collecting sleeve (111), and the guide mating member (5) is distributed on both sides of the movable power-collecting member (121).

8. The adapter (100) with adjustable power extraction distance according to claim 7, characterized in that: The guide fittings (5) located on both sides of the active power-taking component (121) are arranged in a staggered manner.

9. The adapter (100) with adjustable power extraction distance according to claim 4, characterized in that: The fixed power-collecting sleeve (111) is provided with a limit marker (6), and the movable power-collecting component (121) is provided with a limit marker fitting component (7). The limit marker (6) and the limit marker fitting component (7) are slidably engaged to indicate the relative position of the movable power-collecting component (121) and the fixed power-collecting sleeve (111) and to limit the extreme movement position of the movable power-collecting component (121).

10. A track socket, characterized in that: It includes a power rail (200) and an adapter (100) with an adjustable power supply distance as claimed in any one of claims 1-9, the adapter (100) being slidably mounted on the power rail (200), the power rail (200) being embedded in or within the mounting surface.

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