Adapter, track socket and power distribution device

Abstract

The application discloses an adapter, a track socket and a power distribution device, the adapter comprises an adapter main body, a side of the adapter main body is provided with an upwardly bent plug-in part, and a conductive assembly is arranged on the plug-in part. The track socket comprises a track body, a side of the track body is provided with a downwardly open mounting groove, and a female bus group is arranged in the mounting groove. The power distribution device comprises the adapter and the track socket. The plug-in part can be inserted into the mounting groove upwardly along the opening, so that the conductive assembly is electrically connected with the female bus group. Regardless of whether the adapter is installed on the track socket or not, water drops are difficult to overcome their own gravity and contact the female bus group or the conductive assembly, the possibility of the female bus group being involved in water is reduced, the waterproof performance of the power distribution device is improved, the possibility of short circuit caused by water is reduced, the electrical safety is improved, and the power supply and the electrical appliance are protected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of socket, in particular to an adapter, a track socket and a power distribution device. BACKGROUND

[0002] The conventional power supply mode is to fix the power socket on the wall in the room, but this power supply mode has the disadvantages that the installed socket cannot be moved, and the number of installed power sockets is limited, which cannot meet the connection requirements of the electrical equipment. Therefore, the power distribution device which can realize the tapping function of the power supply and meet the installation of different positions has appeared in the market. This power distribution device includes a track socket and an adapter plugged into the track socket, and the adapter can be moved on the track socket.

[0003] Reference Figure 1 Generally, the track socket includes a long strip-shaped track 10, the side of the track 10 is provided with an embedded slot 11 with an opening, the track 10 is provided with a female bus group 12 located in the embedded slot 11, and the adapter has a conductive assembly plugged into the embedded slot 11 and matched with the female bus group 12. When the track socket is in a humid environment, water vapor or water droplets can enter the embedded slot 11 from the opening of the embedded slot 11 to cause water accumulation, which affects the safety of the power distribution device, and even causes short circuit between the female bus groups 12 to cause electrical safety accidents. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes an adapter which is beneficial to improve the waterproof performance of the power distribution device.

[0005] The present application also proposes a track socket which is used in cooperation with the above-mentioned adapter, which helps to reduce the possibility of water immersion of the female bus group, improve the waterproof performance of the power distribution device, and improve the electrical safety.

[0006] The present application also proposes a power distribution device using the above-mentioned adapter and track socket.

[0007] The adapter according to the first aspect of the present application comprises: an adapter main body, the side of the adapter main body is provided with an upwardly bent plug-in part, and the plug-in part is provided with a conductive assembly.

[0008] The adapter according to the present application has at least the following beneficial effects:

[0009] The adapter is provided with an upwardly bent plug extending from the side of the adapter body, which can be inserted into the mounting groove of the track socket to electrically connect the conductive components on the plug with the busbar group in the mounting groove, so as to mount the adapter on the track socket, and the condensed water droplets are difficult to contact the conductive components by overcoming their own gravity, so that the power distribution device is improved in waterproof performance and electrical safety.

[0010] In some embodiments of the present application, the plug is provided with two plugs arranged above and below the side wall of the adapter body, and the conductive components include a live wire conductive component and a zero wire conductive component arranged on one of the plugs and a ground wire conductive component arranged on the other plug. The adapter body provided with two plugs can reduce the stress on a single plug and reduce the possibility of plug breakage, so that the adapter can be stably mounted on the track socket. The electrical safety of the conductive components with live wire conductive components, zero wire conductive components and ground wire conductive components is higher, and the arrangement of the above conductive components can avoid the problem of difficult assembly caused by the concentration of live wire conductive components, zero wire conductive components and ground wire conductive components on one plug.

[0011] In some embodiments of the present application, the plug includes a side extension extending from the side of the adapter body and an upwardly bent portion connected to the side extension, and the live wire conductive component and the zero wire conductive component are arranged on the two side walls of the upwardly bent portion located at the lower part of the adapter body, respectively. Arranging the live wire conductive component and the zero wire conductive component on the two side walls of the upwardly bent portion can not only isolate the live wire conductive component and the zero wire conductive component to reduce the risk of short circuit, but also facilitate the electrical connection between the adapter and the track socket.

[0012] The track socket according to the second aspect of the present application comprises: a track body, the side of the track body is provided with a mounting groove, the extension direction of the mounting groove is consistent with the extension direction of the track body, the mounting groove has a downward opening, and the mounting groove contains a busbar group located above the opening.

[0013] The track socket according to the embodiment of the present application has at least the following beneficial effects:

[0014] The track socket is provided with a downwardly open mounting groove on the side of the track body, and whether the adapter is mounted on the track socket or not, the water droplets are difficult to contact the busbar group by overcoming their own gravity, so as to reduce the possibility of the busbar group being involved in water, improve the waterproof performance of the power distribution device, and improve the electrical safety.

[0015] In some embodiments of the present application, the side of the track body is provided with a downward bending part, the lower end of the downward bending part and the side wall of the track body define the opening of the mounting slot, and the busbar group is arranged on the inner wall of the downward bending part.

[0016] In some embodiments of the present application, two mounting slots are arranged on the side of the track body, the busbar group includes a live busbar and a zero busbar arranged in one of the mounting slots and a ground busbar arranged in the other mounting slot. The track body is provided with two mounting slots, which can be matched with an adapter having two plug-in parts, and the adapter can be stably mounted on the track socket.

[0017] The power distribution device according to the third aspect of the embodiments of the present application comprises the adapter of any of the above technical solutions and the track socket of any of the above technical solutions.

[0018] The power distribution device according to the embodiments of the present application has at least the following beneficial effects:

[0019] The power distribution device using the above adapter and track socket has good waterproof performance, which can reduce the possibility of short circuit caused by wading, improve the safety of electricity use, and is beneficial to protect the power supply and the electrical appliance.

[0020] In some embodiments of the present application, a limiting mechanism is arranged between the track socket and the adapter, which can limit the movement of the adapter relative to the track socket. The limiting mechanism can limit the movement of the adapter relative to the track socket, so as to avoid the adapter from sliding along the track socket due to external force, reduce the abrasion of the conductive assembly and the busbar group, and ensure the power connection stability of the power distribution device.

[0021] In some embodiments of the present application, the limiting mechanism comprises a plurality of first clamping parts and at least one second clamping part capable of cooperating with the first clamping parts, one of the first clamping parts and the second clamping parts is arranged on the track socket, and the other is arranged on the adapter. The second clamping part can adjust the position of the adapter on the track socket in combination with different first clamping parts, and the position of the adapter can be stable after adjustment and is not easy to be relatively displaced due to external force.

[0022] In some embodiments of the present invention, a rack is fixedly provided in the mounting groove. The rack has multiple teeth spaced apart along its length, and a slot is defined between two adjacent teeth. The slot constitutes the first snap-fit ​​member, and the second snap-fit ​​member is a latching member movably disposed on the adapter body. The latching member can snap into any of the slots. The rack has multiple slots evenly spaced along its length, allowing for adjustment of multiple positions of the adapter by snapping the latching member into one of the slots to meet different usage needs.

[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is a schematic diagram of the internal structure of an existing track socket;

[0026] Figure 2 This is a schematic diagram of the structure of an embodiment of the adapter of the present invention;

[0027] Figure 3 for Figure 2 A structural decomposition diagram;

[0028] Figure 4 This is a schematic diagram of the structure of one embodiment of the track socket of the present invention;

[0029] Figure 5 This is a schematic diagram illustrating the structure of the power distribution device of the present invention, showing the separation of the adapter from the track socket.

[0030] Figure 6 for Figure 5 A schematic diagram of the internal cross-section of the adapter combined with the conductive track in the embodiment;

[0031] Figure 7 for Figure 6 A structural decomposition diagram;

[0032] Figure 8 for Figure 6 A magnified view of part A in the middle;

[0033] Figure 9 for Figure 5 Another cross-sectional schematic diagram of the adapter combined with the conductive track in the embodiment;

[0034] Figure 10 for Figure 9A local enlarged view of the middle B part. DETAILED DESCRIPTION

[0035] This part will describe the specific embodiments of the present application in detail, the preferred embodiments of the present application are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0036] In the description of the present application, if the first, second, third, fourth, fifth, etc. are described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0037] In the description of the present application, it is understood that the orientation description, such as up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the present application.

[0038] In the present application, unless otherwise explicitly limited, the words "set", "install", "connect" and the like should be understood broadly, for example, they can be directly connected, or indirectly connected through an intermediate medium; can be fixedly connected, or can be detachably connected, or can be integrally formed; can be mechanically connected; can be the internal connection of two elements or the interaction relationship between two elements. The skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0039] Reference Figure 2 and Figure 3 The adapter of the embodiment of the present application comprises an adapter main body 100, a side of the adapter main body 100 is provided with an upwardly bent plug 110, and a conductive assembly 120 is arranged on the plug 110.

[0040] The adapter has the upwardly bent plug 110 extending from the side of the adapter main body 100, the plug 110 can be inserted upwardly into the mounting groove 210 of the track socket, so that the conductive assembly 120 on the plug 110 is electrically connected with the busbar group 220 in the mounting groove 210, thereby realizing the installation of the adapter on the track socket, and the condensed water droplets are difficult to overcome the self-gravity to contact the conductive assembly 120. The use of the adapter is conducive to improving the waterproof performance of the power distribution device and improving the electrical safety.

[0041] ReferenceFigure 2 and Figure 3 In some embodiments of the present application, two plug-in parts 110 are arranged on the side wall of the adapter main body 100 in an up-down arrangement, and the conductive assembly 120 includes a live wire conductive part 121 and a zero wire conductive part 122 arranged on one of the plug-in parts 110 and a ground wire conductive part 123 arranged on the other plug-in part 110. It should be noted that the adapter main body 100 is provided with two plug-in parts 110, and accordingly, the track socket used in cooperation with the adapter main body 100 is provided with two installation grooves 210 corresponding to the plug-in parts 110, which can stably insert the plug-in parts 110 from bottom to top. The adapter main body 100 is provided with two plug-in parts 110, which can reduce the stress on a single plug-in part 110 and reduce the possibility of breaking the plug-in part 110, thereby facilitating the stable installation of the adapter on the track socket. The conductive assembly 120 with the live wire conductive part 121, the zero wire conductive part 122, and the ground wire conductive part 123 has higher electrical safety, and the arrangement of the above conductive assembly 120 can avoid the problem of difficult assembly caused by the concentration of the live wire conductive part 121, the zero wire conductive part 122, and the ground wire conductive part 123 on one plug-in part 110.

[0042] Referring to Figure 3 It can be understood that in some embodiments, the conductive assembly 120 only has a live wire conductive part 121 and a zero wire conductive part 122, which can be arranged on two plug-in parts 110 respectively or only on one plug-in part 110.

[0043] Referring to Figure 2 In some embodiments of the present application, the plug-in part 110 includes a side extension 111 extending from the side of the adapter main body 100 and an upper bending part 112 connected to the side extension 111, that is, the cross-sectional shape of the plug-in part 110 is approximately L-shaped. The live wire conductive part 121 and the zero wire conductive part 122 are arranged on the two side walls of the upper bending part 112 located at the lower part of the adapter main body 100, respectively, and the ground wire conductive part 123 is arranged on the upper bending part 112 located at the upper part of the adapter main body 100. Accordingly, the two inner side walls of the installation groove 210 located at the lower part of the track socket are respectively provided with a live wire busbar 221 capable of contacting the live wire conductive part 121 and a zero wire busbar 222 capable of contacting the zero wire conductive part 122, and the installation groove 210 located at the upper part of the track socket is provided with a ground wire busbar 223 capable of contacting the ground wire conductive part 123. Arranging the live wire conductive part 121 and the zero wire conductive part 122 on the two side walls of the upper bending part 112 can not only isolate the live wire conductive part 121 and the zero wire conductive part 122 to reduce the risk of short circuit, but also facilitate the electrical connection between the adapter and the track socket.

[0044] It can be understood that the firewire female bus 221 and the zero line female bus 222 play a clamping effect on the firewire conductive part and the zero line conductive part, and the adapter structure with the above structure is compact and stable in installation.

[0045] Referring to Figure 4 The track socket of the embodiment of the present application comprises a track body 200, a side of the track body 200 is provided with a mounting groove 210, the extending direction of the mounting groove 210 is consistent with the extending direction of the track body 200, the mounting groove 210 has a downward opening, and a female bus group 220 is arranged in the mounting groove 210 above the opening.

[0046] The track socket has the mounting groove 210 with the downward opening arranged on the side of the track body 200, and no matter whether the adapter is installed on the track socket or not, water droplets are difficult to overcome their own gravity to contact the female bus group 220, the possibility of the female bus group 220 being involved in water is reduced, the waterproof performance of the power distribution device is improved, and the electrical safety is improved.

[0047] Referring to Figure 4 In some embodiments of the present application, a plurality of drainage holes are arranged on the side wall of the track body 200 and are communicated with the mounting groove 210, when the side wall of the track socket is horizontally placed, at this time, the opening of the mounting groove 210 faces the horizontal direction, water droplets are easy to accumulate in the mounting groove 210, and the water in the mounting groove 210 can be drained by using the drainage holes. Preferably, the drainage holes are arranged in multiple numbers, and the multiple drainage holes are arranged and distributed along the extending direction of the track body 200.

[0048] Referring to Figure 4 In some embodiments of the present application, the side of the track body 200 is provided with a downward bending part 230, the downward bending part 230 has a horizontal extension part 231 and a vertical extension part 232 connected with the horizontal extension part 231, that is, the downward bending part 230 is roughly in an inverted L shape, the opening of the mounting groove 210 is defined between the lower end of the downward bending part 230 and the side wall of the track body 200, and the female bus group 220 is arranged on the inner wall of the downward bending part 230. Specifically, the track body 200 has a space below the opening of the mounting groove 210, and the plug-in part 110 on the adapter body 100 enters the space and is inserted into the mounting groove 210 upward along the opening of the mounting groove 210.

[0049] Referring to Figure 4In some embodiments of the present application, two installation grooves 210 are arranged on the side of the track body 200, and the busbar group 220 includes a live busbar 221 and a zero busbar 222 arranged in one installation groove 210 and a ground busbar 223 arranged in the other installation groove 210. In this embodiment, the live busbar 221 and the zero busbar 222 are arranged in the lower installation groove 210, and the ground busbar 223 is arranged in the upper installation groove 210. Correspondingly, the live conductor 121 and the zero conductor 122 are arranged on the lower plug-in connector 110, and the ground conductor 123 is arranged on the upper plug-in connector 110. The track body 200 is provided with two installation grooves 210, which can be matched with the adapter having two plug-in connectors 110, and the adapter can be stably installed on the track socket.

[0050] Referring to Figure 5 , Figure 6 , Figure 9 The power distribution device of the embodiments of the present application includes the adapter of any of the above technical solutions and the track socket of any of the above technical solutions.

[0051] The power distribution device using the above adapter and track socket has good waterproof performance, can reduce the possibility of short circuit caused by water, improve the safety of electricity use, and is beneficial to protect the power supply and the electrical appliance.

[0052] Referring to Figure 7 , Figure 8 , Figure 9 In some embodiments of the present application, a limiting mechanism 300 capable of limiting the movement of the adapter relative to the track socket is arranged between the track socket and the adapter. The limiting mechanism 300 can limit the movement of the adapter relative to the track socket, thereby avoiding the adapter from sliding along the track socket due to external force, reducing the abrasion of the conductive assembly 120 and the busbar group 220, and ensuring the power connection stability of the power distribution device.

[0053] Referring to Figure 9In some embodiments of the present application, the limiting mechanism 300 comprises a plurality of first clamping members and at least one second clamping member capable of cooperating with the first clamping members. One of the first clamping members and the second clamping member is arranged on the track socket, and the other is arranged on the adapter. When the second clamping member is combined with one of the first clamping members, the adapter can be stabilized at a certain position or a certain position range of the track socket. The second clamping member can be combined with different first clamping members to adjust the position of the adapter on the track socket, and the position of the adapter can be stabilized after adjustment and is not easy to be relatively displaced by external force. Of course, in other embodiments, the limiting mechanism 300 can also be replaced by other structures, for example, the limiting mechanism 300 is a clamping device. When the adapter is installed at the preset position on the track socket, the adapter and the track socket are clamped and fixed by the clamping device.

[0054] Referring to Figure 7 and Figure 9 In some embodiments of the present application, the mounting groove 210 is fixedly provided with a rack 400. The rack 400 is provided with a plurality of teeth 410 spaced along the length direction thereof. A clamping groove 310 is defined between two adjacent teeth 410. The clamping groove 310 constitutes the first clamping member. The second clamping member is a clasp 320 movably arranged on the adapter main body 100. The clasp 320 can be clamped in any one of the clamping grooves 310. It can be understood that the rack 400 is uniformly provided with a plurality of clamping grooves 310 spaced along the length direction thereof. The clasp 320 is clamped in one of the clamping grooves 310 to adjust the position of the adapter to meet different use needs. It can be easily understood that in other embodiments, the first clamping member can be the tooth 410 of the rack 400, and the second clamping member is a tooth groove matched with the tooth 410. The tooth groove is combined with any one of the teeth 410 to adjust the position of the adapter on the track socket.

[0055] Referring to Figure 7 and Figure 8 In order to ensure that the clasp 320 can be combined with the clamping groove 310, the clasp 320 is connected with an elastic driving assembly 500 for driving the clasp 320 to abut against the clamping groove 310. In order to switch the clasp 320 to be combined with another clamping groove 310, the elastic clasp is connected with an unlocking assembly 600 capable of overcoming the action of the elastic driving assembly 500 to make the clasp 320 separate from the corresponding clamping groove 310.

[0056] Specifically, referring to Figure 8, the elastic driving assembly 500 comprises a swing arm 510 rotatably arranged on the adapter 110 and an elastic member 520 abutting against the swing arm 510, and the buckle 320 is connected with the swing arm 510, and the elastic member 520 can drive the swing arm 510 to swing towards the rack 400 so that the buckle 320 enters the corresponding clamping groove 310. Specifically, the rack 400 is arranged on the inner side of the vertical extension 232 of the lower bending member 230, and the side extension 111 and the upper bending member 112 define a receiving groove for accommodating the vertical extension 232, and the upper bending member 112 is provided with a clearance gap for the expansion and contraction movement of the buckle 320 towards the receiving groove, and under the action of the elastic member 520, the swing arm 510 swings towards the rack 400, and the buckle 320 passes through the clearance gap and is kept abutting against one of the clamping grooves 310.

[0057] Referring to Figure 9 In the embodiment, two buckles 320 and two elastic driving assemblies 500 are arranged on the same adapter 110, and the two buckles 320 are respectively clamped in the two clamping grooves 310 to stably mount the adapter on the track socket.

[0058] Referring to Figure 7 And with 8, in some embodiments of the present application, the swing arm 510 is rotatably arranged on the adapter 110 through a horizontally arranged first pivot 511, the buckle 320 is rotatably arranged on the swing arm 510 through a vertically arranged second pivot 321, the buckle 320 can rotate relative to the swing arm 510 to extend into the adjacent clamping groove 310, and the swing arm 510 and the buckle 320 are provided with a rotation limiting structure for limiting the deflection angle of the buckle 320. It should be noted that when the swing arm 510 swings towards the rack 400, if the buckle 320 cannot be aligned with any clamping groove 310, i.e. the buckle 320 abuts against the tooth portion 410 between the adjacent two clamping grooves 310 under the action of the elastic member 520, the buckle 320 can rotate around the second pivot 321 to make the buckle 320 enter the adjacent clamping groove 310, thereby improving the fault tolerance of the combination of the buckle 320 and the clamping groove 310 and facilitating the mounting and fixing of the adapter. The rotation limiting structure limits the angle of rotation of the buckle 320 around the second pivot 321, thereby avoiding the situation that the buckle 320 rotates to be separated from the clamping groove 310, and ensuring the stability of the connection between the adapter and the track socket under the condition of allowing a certain fault tolerance.

[0059] Referring to Figure 10In some embodiments of the present application, specifically, the two sides of the card slot 310 are provided with inclined surfaces which are open outwards relative to the bottom of the card slot 310, and the two sides of the buckle member 320 are respectively provided with contact surfaces 322 corresponding to the inclined surfaces, and the buckle member 320 can swing slightly in the card slot 310 so that one of the contact surfaces 322 abuts against the corresponding inclined surface. It should be noted that the width of the card slot 310 is slightly larger than the width of the part of the buckle member 320 which extends into the card slot 310, and when the buckle member 320 is misaligned with the card slot 310, the contact surface 322 on the buckle member 320 can abut against one of the inclined surfaces under the driving of the elastic member 520.

[0060] Referring to Figure 10 In some embodiments of the present application, the rotation limiting structure comprises a first limiting surface 323 and a second limiting surface 324 which are arranged at an angle on the buckle member 320, and the first limiting surface 323 and the second limiting surface 324 can abut against the adapter to limit the deflection angle of the buckle member 320. It can be understood that the angle between the first limiting surface 323 and the second limiting surface 324 can be set to other values according to the range of the angle through which the buckle member 320 can rotate around the second pivot 321.

[0061] Referring to Figure 3 and Figure 8 In some embodiments of the present application, the unlocking assembly 600 comprises a flap 610 which is rotationally connected to the adapter, one end of the flap 610 abuts against the swing arm 510, and the other end of the flap 610 is connected to or abuts against a driving member 620, and the driving member 620 can drive the flap 610 to rotate so as to drive the swing arm 510 to move away from the rack 400. It should be noted that when it is needed to remove the adapter from the track socket or when it is needed to move the adapter to other positions on the track socket, the user drives the driving member 620 to move so that the flap 610 is raised, and the end of the flap 610 close to the swing arm 510 drives the buckle member 320 on the swing arm 510 to move away from the card slot 310, so as to unlock the adapter from the track socket, and when the adapter is removed from the track socket or moved to other positions on the track socket, the user no longer applies force to the driving member 620, and under the action of the elastic member 520, the swing arm 510, the flap 610 and the driving member 620 are all reset to the original state, so as to lock the adapter on the track socket.

[0062] The technical features of the above embodiments can be combined in any manner, and in order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present application.

[0063] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely divergences of the principles and application of the present application and that numerous modifications, changes, substitutions, and alterations can be made thereto without departing from the spirit and scope of the present application, which is defined by the following claims and their equivalents.

Claims

1. Power distribution apparatus, characterized in that Comprising: The application discloses an adapter and a track socket, the adapter comprises an adapter body (100), the side of the adapter body (100) is provided with two upward-bent plug-in parts (110), and a conductive assembly (120) is arranged on the plug-in part (110); the two plug-in parts (110) are arranged on the side wall of the adapter body (100) in an up-down mode, and the conductive assembly (120) comprises a live wire conductive part (121) and a zero wire conductive part (122) arranged on one of the plug-in parts (110) and a ground wire conductive part (123) arranged on the other plug-in part (110); the plug-in part (110) comprises a side extension (111) extending from the side of the adapter body (100) and an upward-bent part (112) connected with the side extension (111), and the live wire conductive part (121) and the zero wire conductive part (122) are arranged on the two side walls of the upward-bent part (112) located at the lower part of the adapter body (100) respectively; the track socket comprises a track body (200), the side of the track body (200) is provided with a mounting groove (210), the extending direction of the mounting groove (210) is consistent with the extending direction of the track body (200), the mounting groove (210) has a downward opening, and a female bus group (220) is arranged in the mounting groove (210) and located above the opening; the side of the track body (200) is provided with a downward-bent part (230), the lower end of the downward-bent part (230) and the side wall of the track body (200) define the opening of the mounting groove (210), and the female bus group (220) is arranged on the inner wall of the downward-bent part (230); the mounting groove (210) is provided with two mounting grooves (210), the two mounting grooves (210) are arranged on the side of the track body (200) in an up-down mode, and the female bus group (220) comprises a live wire female bus (221) and a zero wire female bus (222) arranged in one of the mounting grooves (210) and a ground wire female bus (223) arranged in the other mounting groove (210); the track socket and the adapter are provided with a limiting mechanism (300) capable of limiting the movement of the adapter relative to the track socket; the limiting mechanism (300) comprises a plurality of first clamping parts and at least one second clamping part capable of cooperating with the first clamping parts, one of the first clamping parts and the second clamping part is arranged on the track socket, and the other is arranged on the adapter; a rack (400) is fixedly arranged in the mounting groove (210), a plurality of tooth parts (410) are arranged on the rack (400) along the length direction of the rack (400), one clamping groove (310) is defined between two adjacent tooth parts (410), the clamping groove (310) constitutes the first clamping part, and the second clamping part is a buckle part (320) movably arranged on the adapter body (100), and the buckle part (320) can be clamped in any clamping groove (310).The buckle (320) is connected with an elastic driving assembly (500) for driving the buckle to abut against the card slot (310); the elastic driving assembly (500) comprises a swing arm (510) rotatably arranged on the plug-in part (110) and an elastic member (520) abutting against the swing arm (510), the buckle (320) is connected with the swing arm (510), the swing arm (510) is rotatably arranged on the plug-in part (110) through a horizontally arranged first pivot (511), the buckle (320) is rotatably arranged on the swing arm (510) through a vertically arranged second pivot (321), the buckle (320) can rotate relative to the swing arm (510) to extend into the adjacent card slot (310), a rotation limiting structure for limiting the deflection angle of the buckle (320) is arranged between the swing arm (510) and the buckle (320); the swing arm (510) is connected with an unlocking assembly (600) capable of overcoming the action of the elastic driving assembly (500) to make the buckle (320) separate from the corresponding card slot (310).

Images