Power track and track socket

Abstract

The utility model relates to a power track and a track socket, and belongs to the technical field of sockets. The power rail comprises a shell, two insulating strips and two busbars. The shell is provided with two containing cavities and an adapter slot, the two containing cavities are located on the two sides of the adapter slot respectively and communicated with each other, two first clamping grooves are formed in the sides, away from the adapter slot, of the containing cavities, and openings of the two first clamping grooves are opposite to each other in the thickness direction of the shell. The two insulating strips are respectively located in the two accommodating cavities, each insulating strip comprises a main part, a first branch part and a second branch part, one busbar is clamped in the first branch part, the second branch part comprises two first extension arms, and the two first extension arms both extend away from the adapter slot and are spaced from each other; the free end of each first extension arm is bent and clamped into the corresponding first clamping groove. By adopting the power supply track cutting device, the power supply track can be ensured to be normally used after being cut.

Description

Technical Field

[0001] The present application relates to the technical field of sockets, and in particular to a power rail and a rail socket. Background Art

[0002] As a new type of socket product, the track socket mainly includes a power track (also called power track) and an adapter in structure. Generally, the number of adapters can be increased or decreased arbitrarily within the range of the power track, the position of the adapter can also be adjusted arbitrarily on the power track, and the power track can be set on the wall or embedded in the desktop, so the track socket is not only flexible in configuration, but also more convenient to use.

[0003] However, power rails of the same length may not meet different installation spaces or different user needs, so the power rails need to be cut to adjust their length. Current power rails are easily twisted during cutting, causing damage to the internal structure of the power rails, and the cut power rails cannot continue to be used normally, that is, they cannot be cut at will. Utility Model Content

[0004] In view of this, an embodiment of the present application provides a power rail and a rail socket, which can ensure that the power rail can still be used normally after being cut.

[0005] On the one hand, an embodiment of the present application provides a power rail, the power rail comprising a housing, two insulating strips and two busbars;

[0006] The housing has two accommodating cavities and an adapter slot, the two accommodating cavities are respectively located on both sides of the adapter slot and are connected to each other, and two first card slots are provided on one side of the accommodating cavity away from the adapter slot, wherein the openings of the two first card slots are opposite to each other in the thickness direction of the housing;

[0007] The two insulating strips are respectively located in the two accommodating cavities, each of the insulating strips includes a main body, a first branch and a second branch, the first branch is connected to the side of the main body close to the adapter slot, the second branch is connected to the side of the main body away from the adapter slot, a busbar is clamped in the first branch, the second branch includes two first extension arms, the two first extension arms extend away from the adapter slot and are spaced from each other, and the free end of each first extension arm is bent and clamped into the corresponding first card slot.

[0008] Optionally, the accommodating cavity comprises a first side wall, a second side wall and a third side wall which are connected in sequence, and the first side wall and the third side wall are opposite to each other in the thickness direction of the shell;

[0009] A first limiting plate is provided at one end of the first side wall close to the second side wall, and the first limiting plate extends toward the third side wall;

[0010] A second limiting plate is provided at one end of the third side wall close to the second side wall, and the second limiting plate extends toward the first side wall;

[0011] Wherein, the second side wall forms the first clamping groove with the first limiting plate and the second limiting plate respectively.

[0012] Optionally, the free end of the first extension arm close to the first side wall is bent in a direction perpendicular to the first side wall, and one end of the first limiting plate away from the first side wall abuts against the corresponding first extension arm;

[0013] The free end of the first extension arm close to the third side wall is bent in a direction perpendicular to the third side wall, and one end of the second limiting plate away from the third side wall abuts against the corresponding first extension arm.

[0014] Optionally, the first branch portion includes two second extension arms, the two second extension arms extend toward the adapter slot and are spaced apart from each other, and one of the busbars is inserted between the two second extension arms.

[0015] Optionally, the third side wall has a second slot;

[0016] The first branch portion further includes a third extension arm, a fixed end of the third extension arm is connected to the second extension arm close to the third side wall, and a free end of the third extension arm extends toward the third side wall and is inserted into the second slot.

[0017] Optionally, the second extension arm close to the first side wall is provided with a third card slot, and the second extension arm close to the third side wall is provided with a fourth card slot, and the third card slot and the fourth card slot are opposite to each other in the thickness direction of the shell;

[0018] Two sides of the busbar are respectively inserted into the third slot and the fourth slot.

[0019] Optionally, the second extension arm close to the first side wall is provided with a first convex rib, and the first convex rib is connected to a side of the third card slot close to the adapter slot;

[0020] The second extension arm close to the second side wall is provided with a second convex rib, and the second convex rib is connected to a side of the fourth card slot close to the adapter slot;

[0021] One side of the busbar facing the adapter abuts against the first rib and the second rib respectively.

[0022] Optionally, a free end of the second extension arm close to the first side wall is bent toward the first side wall and abuts against the first side wall.

[0023] Optionally, the power rail further includes a first cover body and a second cover body, wherein the first cover body and the second cover body are respectively located at two ends of the shell in the length direction;

[0024] The first limiting plate, the first extension arm, the second extension arm and the first side wall together form a cover body slot, wherein a portion of the first cover body is snapped into one end of the cover body slot, and a portion of the second cover body is snapped into the other end of the cover body slot.

[0025] On the other hand, an embodiment of the present application further provides a track socket, which includes at least one adapter and any one of the power rails described above, and a power supply portion of the adapter is inserted into the housing through the adapter slot.

[0026] The power rail provided in the embodiment of the present application includes a shell, two insulating strips and two busbars. The shell has two accommodating chambers and an adapter slot. The two accommodating chambers are respectively located on both sides of the adapter slot and are interconnected. The side of the accommodating chamber away from the adapter slot is provided with two first card slots opposite to each other in the thickness direction of the shell. The two insulating strips are respectively located in the two accommodating chambers, and the accommodating chambers can limit the insulating strips. Each insulating strip includes a main body, a first branch portion and a second branch portion. The first branch portion is connected to the side of the main body close to the adapter slot, and a busbar is clamped in the first branch portion, so that the busbar can be stably connected with the insulating strip. The second branch portion is connected to the side of the main body away from the adapter slot. Since the free ends of the two first extension arms of the second branch portion are bent and clamped in the corresponding first card slots, the two first card slots arranged opposite to each other can not only limit the first extension arm, but also prevent the insulating strip from being displaced or deformed when the power rail is cut to change the length of the power rail, thereby preventing the components inside the power rail from being damaged due to cutting, that is, ensuring that the power rail can still be used normally after being cut. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 is an exploded diagram of a power rail provided in an embodiment of the present application;

[0029] Figure 2 It is a schematic diagram of the structure of a power supply track provided in an embodiment of the present application;

[0030] Figure 3 The shell of a power rail provided in an embodiment of the present application is Figure 2 A schematic cross-sectional view at section AA is shown;

[0031] Figure 4 It is a schematic diagram of the structure of an insulating strip in a power rail provided in an embodiment of the present application;

[0032] Figure 5 A power rail provided in an embodiment of the present application is Figure 2 A schematic cross-sectional view of section AA is shown.

[0033] Reference numerals:

[0034] 100, housing; 110, accommodating cavity; 120, adapter slot; 130, first card slot; 140, second card slot; 150, bearing plate; 160, support member; 112, first side wall; 113, second side wall; 114, third side wall; 115, first limiting plate; 116, second limiting plate; 151, fifth card slot; 152, sixth card slot;

[0035] 200, insulating strip; 210, trunk; 220, first branch; 230, second branch; 221, second extension arm; 222, third extension arm; 223, third slot; 224, fourth slot; 225, first convex rib; 226, second convex rib; 231, first extension arm;

[0036] 300, busbar;

[0037] 400, a first cover;

[0038] 500, second cover;

[0039] 600, cover body slot;

[0040] 700, mounting parts;

[0041] 800. Grounding busbar assembly.

[0042] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0043] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0044] The terms used in the embodiments of the present disclosure are only used to explain the embodiments of the present disclosure, and are not intended to limit the present disclosure. Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with ordinary skills in the field to which the present disclosure belongs. The words "first", "second", "third" and similar words used in the patent application specification and claims of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantity limit, but indicate that there is at least one. Words such as "include" or "include" mean that the elements or objects appearing in front of "include" or "include" include the elements or objects listed after "include" or "include" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0045] like Figure 1 As shown, an embodiment of the present application provides a power rail, which includes a housing 100, two insulating strips 200 and two busbars 300. It should be noted that the insulating strips 200 and the busbars 300 both extend along the length direction of the housing 100. The housing 100 may be an aluminum alloy profile. The material of the insulating strip 200 has high toughness and high elasticity, for example, it may be PC (Polycarbonate). One of the two busbars 300 is, for example, an L-pole busbar, and the other is, for example, an N-pole busbar.

[0046] Combination Figure 2 and Figure 3 As shown, the housing 100 has two accommodating chambers 110 and an adapter slot 120, the two accommodating chambers 110 are respectively located on both sides of the adapter slot 120 and are interconnected, and two first card slots 130 are provided on the side of the accommodating chamber 110 away from the adapter slot 120, wherein the openings of the two first card slots 130 are opposite to each other in the thickness direction of the housing 100. It should be noted that, in addition to the above-mentioned two busbars 300, a grounding busbar assembly 800 can also be installed in the housing 100, and the grounding busbar assembly 800 is also called a PE pole busbar assembly. The adapter slot 120 extends along the length direction of the housing 100 and is suitable for providing a plug-in space for an adapter that cooperates with a power rail. The power-taking part of the adapter can be inserted into the adapter slot 120 and moved along the extension direction of the adapter slot 120, and is connected with each busbar 300 to conduct current.

[0047] Combination Figure 4 and Figure 5 As shown, two insulating strips 200 are respectively located in two accommodating cavities 110. It should be noted that the two insulating strips 200 can be symmetrically arranged on both sides of the adapter slot 120. Each insulating strip 200 includes a main body 210, a first branch 220 and a second branch 230. The first branch 220 is connected to the side of the main body 210 close to the adapter slot 120, and the second branch 230 is connected to the side of the main body 210 away from the adapter slot 120. It can be understood that the main body 210 can support the first branch 220 and the second branch 230 respectively. A busbar 300 is stuck in the first branch 220, so as to achieve a stable connection between the busbar 300 and the insulating strip 200. The second branch 230 includes two first extension arms 231, both of which extend away from the adapter slot 120 and are spaced from each other. The free end of each first extension arm 231 is bent and stuck in the corresponding first slot 130. It should be understood that the two first slots 130 arranged opposite to each other can not only limit the first extension arm 231, but also prevent the insulating strip 200 from being displaced or deformed when the power rail is cut to change the length of the power rail, thereby improving the cutting stability of the insulating strip 200, and further preventing the components inside the power rail from being damaged due to cutting, that is, ensuring that the power rail can still be used normally after being cut.

[0048] It should be noted that when the top surface of the shell 100 is used as the cutting face and the cutting is performed along the thickness direction of the power rail, the first extension arm 231 close to the top surface of the shell 100 first contacts the cutting jig and is limited by the first card slot 130 close to the top surface of the shell 100 and is not easily displaced or deformed. At the same time, the first extension arm 231 away from the top surface of the shell 100 is limited by the corresponding first card slot 130, which can further prevent the insulating strip 200 from shaking, thereby ensuring that the insulating strip 200 and the busbar 300 are not damaged during the cutting process. When the side surface of the shell 100 is used as the cutting face and the cutting is performed along the width direction of the power rail, the two first extension arms 231 can contact the cutting jig at the same time. Due to the limiting effect of the two first card slots 130, it can be ensured that the insulating strip 200 is not damaged during the cutting process. In summary, when the power track provided in the embodiment of the present application is cut in different cutting directions to change the length of the power track, it can be ensured that the insulating strip 200 and the busbar 300 clamped in the insulating strip 200 will not be displaced or deformed, thereby ensuring that the cut power track can still be used normally.

[0049] The following is combined with Figures 1 to 5 The details and functions of the power rail provided in the embodiments of the present application are described in more detail.

[0050] Combination Figure 3 and Figure 5 As shown, in some embodiments, the accommodating cavity 110 includes a first side wall 112, a second side wall 113, and a third side wall 114 connected in sequence, and the first side wall 112 and the third side wall 114 are opposite to each other in the thickness direction of the housing 100. It should be noted that there is a gap between the first side walls 112 of the two accommodating cavities 110 to form a socket of the adapter slot 120. A first limiting plate 115 is provided at one end of the first side wall 112 close to the second side wall 113, and the first limiting plate 115 extends toward the third side wall 114. A second limiting plate 116 is provided at one end of the third side wall 114 close to the second side wall 113, and the second limiting plate 116 extends toward the first side wall 112. Among them, the second side wall 113 forms a first card slot 130 with the first limiting plate 115 and the second limiting plate 116 respectively. Such an arrangement can ensure that the first limiting plate 115 and the second limiting plate 116 are both arranged away from the busbar 300, so that sufficient distance can be left between the busbar 300 and the first limiting plate 115 and between the busbar 300 and the second limiting plate 116 to meet the safety electrical clearance requirements.

[0051] Combination Figure 3 and Figure 5 As shown, in some embodiments, the housing 100 further includes a bearing plate 150, and the two third side walls 114 are respectively connected to the two sides of the bearing plate 150. It should be noted that the bearing plate 150 can be used to carry the grounding busbar assembly 800. In some embodiments, the bearing plate 150 includes a fifth card slot 151 and a sixth card slot 152, and the opening of the fifth card slot 151 and the opening of the sixth card slot 152 are arranged opposite to each other in the width direction of the housing 100. The two sides of the grounding busbar assembly 800 are respectively inserted into the fifth card slot 151 and the sixth card slot 152. In this way, when the power rail is cut, the grounding busbar assembly 800 is limited by the fifth card slot 151 and the sixth card slot 152 and is not easily displaced or deformed, which further improves the stability of the power rail during the cutting process and ensures that the power rail can still be used normally after being cut.

[0052] like Figure 3 As shown, in some embodiments, the housing 100 further includes two support members 160, which are respectively located on both sides of the adapter slot 120, and each support member 160 is connected to the corresponding second side wall 113 and extends in a direction away from the adapter slot 120. It should be noted that the two support members 160 can support the accommodating cavity 110 and improve the stability of the housing 100, so that the power rail is less likely to be displaced or deformed when being cut, ensuring that the cut power rail can still be used normally.

[0053] like Figure 5As shown, in some embodiments, the free end of the first extension arm 231 near the first side wall 112 is bent in a direction perpendicular to the first side wall 112, and the end of the first limit plate 115 away from the first side wall 112 abuts against the corresponding first extension arm 231. The free end of the first extension arm 231 near the third side wall 114 is bent in a direction perpendicular to the third side wall 114, and the end of the second limit plate 116 away from the third side wall 114 abuts against the corresponding first extension arm 231. In this way, the bent portion of the free end of the first extension arm 231 can be completely inserted into the corresponding first slot 130, so that during the cutting process of the power rail, the insulating strip 200 is less likely to be displaced or deformed, and the busbar 300 inserted into the insulating strip 200 is less likely to be displaced or deformed, ensuring that the power rail can still be used normally after being cut. It should be noted that the fixed ends of the two first extension arms 231 are respectively connected to the main body.

[0054] like Figure 5 As shown, in some embodiments, the first branch portion 220 includes two second extension arms 221, which extend toward the adapter slot 120 and are spaced apart from each other, and a busbar 300 is inserted between the two second extension arms 221. It should be noted that the fixed ends of the two second extension arms 221 are respectively connected to the main body. It is understandable that the area formed by the two second extension arms 221 and the main body can provide a moving space for the adapter. Figure 4 and Figure 5 As shown, in some embodiments, the second extension arm 221 close to the first side wall 112 is provided with a third card slot 223, and the second extension arm 221 close to the third side wall 114 is provided with a fourth card slot 224. The third card slot 223 and the fourth card slot 224 are opposite in the thickness direction of the housing 100. The two sides of the busbar 300 are respectively inserted into the third card slot 223 and the fourth card slot 224. Since the third card slot 223 and the fourth card slot 224 are opposite in the thickness direction, when the busbar 300 is clamped, it is possible to avoid the busbar 300 from tilting or twisting due to the misalignment of the third card slot 223 and the fourth card slot 224 in the thickness direction, that is, it is ensured that the busbar 300 will not be deformed after being clamped and can be stably fixed on the insulating strip 200.

[0055] Combination Figure 3 and Figure 5As shown, in some embodiments, the third side wall 114 has a second card slot 140. The first branch portion 220 also includes a third extension arm 222, the fixed end of the third extension arm 222 is connected to the second extension arm 221 close to the third side wall 114, and the free end of the third extension arm 222 extends toward the third side wall 114 and is inserted into the second card slot 140. It should be understood that the second card slot 140 is not only convenient for positioning the third extension arm 222, and thus convenient for positioning the insulating strip 200, but also can further prevent the insulating strip 200 and the busbar 300 from shaking and displacement or deformation during the cutting of the power rail, that is, to ensure that the insulating strip 200 and the busbar 300 can still be used normally after cutting.

[0056] like Figure 4 As shown, in some embodiments, the second extension arm 221 near the first side wall 112 is provided with a first rib 225, and the first rib 225 is connected to the side of the third card slot 223 near the adapter slot 120. The second extension arm 221 near the second side wall 113 is provided with a second rib 226, and the second rib 226 is connected to the side of the fourth card slot 224 near the adapter slot 120. The side of the busbar 300 facing the adapter is respectively against the first rib 225 and the second rib 226. The first rib 225 and the second rib 226 both extend along the length direction of the housing 100 and are relatively protruding. It should be noted that when the power rail is subjected to a safety test, the test probe is generally inserted obliquely from the adapter slot 120 into the area between the two second extension arms 221. By providing the first rib 225 and the second rib 226, it is possible to avoid the end of the test probe from contacting the busbar 300 to damage the busbar 300 or affect the test results.

[0057] like Figure 5 As shown, in some embodiments, the free end of the second extension arm 221 close to the first side wall 112 is bent toward the first side wall 112 and abuts against the first side wall 112. Therefore, during the process of cutting the power rail, the bent portion of the second extension arm 221 can further improve the stability of the insulation strip 200, prevent the insulation strip 200 and the busbar 300 from being affected in performance due to displacement or deformation, and ensure that the cut power rail can still be used normally.

[0058] like Figure 1 and Figure 2As shown, in some embodiments, the power rail further includes a first cover 400 and a second cover 500, and the first cover 400 and the second cover 500 are respectively located at two ends in the length direction of the housing 100. The first limit plate 115, the first extension arm 231, the second extension arm 221 and the first side wall 112 are enclosed to form a cover slot 600, wherein a portion of the first cover 400 is inserted into one end of the cover slot 600, and a portion of the second cover 500 is inserted into the other end of the cover slot 600. Thus, the first cover 400 and the second cover 500 can be more stably connected to the housing 100 and the insulating strip 200. In some embodiments, the length of the insulating strip 200 is greater than the length of the housing 100. The portion of the insulating strip 200 that exceeds the housing 100 in the length direction can play a certain guiding role in the assembly of the first cover 400 or the second cover 500, thereby improving the convenience of assembling the first cover 400 and the second cover 500. It should be noted that when the length of the power rail needs to be changed, the first cover 400 and the second cover 500 can be removed first, and after the cutting is completed, the first cover 400 and the second cover 500 can be reassembled with the housing 100.

[0059] like Figure 1 As shown, in some embodiments, the power rail further includes a mounting member 700, and the mounting member 700 is assembled with the housing 100. It should be noted that the mounting member 700 can be connected to a mounting surface such as a wall or a desktop, so as to fix the power rail on the mounting surface.

[0060] In the embodiment of the present application, the first card slot 130 and the second card slot 140 are provided to limit the first extension arm 231 and the third extension arm 222 of the insulating strip 200 respectively, so that when the power rail is cut, the first extension arm 231 and the second extension arm 221 are not easily displaced or deformed due to the limiting effect of the first card slot 130 and the second card slot 140 respectively, and the busbar 300 inserted between the two opposite second extension arms 221 is also not easily displaced or deformed. In other words, the power rail maintains a high stability during the cutting process, ensuring that the performance of the power rail after cutting is normal and can be used normally. Furthermore, the power rail in the embodiment of the present application, whose length can be flexibly and stably cut, can meet the requirements of different layout spaces and the needs of different users, improve the flexibility of the power rail installation, and also make the user experience better.

[0061] Combination Figures 1 to 5As shown, on the other hand, an embodiment of the present application further provides a track socket, which includes at least one adapter and a power track according to any one of the above-mentioned embodiments of the present application, and the power supply portion of the adapter is inserted into the housing 100 through the adapter slot 120. It should be understood that after the power supply portion of the adapter is inserted into the adapter slot 120 and connected with each busbar 300, it can conduct current. As described above, when the power track provided in the embodiment of the present application is cut in different cutting directions to change the length of the power track, it can be ensured that the insulating strip 200 and the busbar 300 clamped in the insulating strip 200 will not be displaced or deformed, thereby ensuring that the cut power track can still be used normally. Subsequently, the power track whose length can be flexibly and stably cut in the embodiment of the present application can meet different layout space requirements and the needs of different users, improve the flexibility of power track installation, and make the user experience better.

[0062] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the present application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only.

[0063] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A power rail, characterized in that: The power rail comprises a housing (100), two insulating strips (200) and two busbars (300); The housing (100) comprises two accommodating cavities (110) and an adapter slot (120), the two accommodating cavities (110) are respectively located on two sides of the adapter slot (120) and are connected to each other, and two first card slots (130) are provided on a side of the accommodating cavity (110) away from the adapter slot (120), wherein the openings of the two first card slots (130) are opposite to each other in the thickness direction of the housing (100); The two insulating strips (200) are respectively located in the two accommodating cavities (110), each of the insulating strips (200) comprises a main body (210), a first branch portion (220) and a second branch portion (230), the first branch portion (220) being connected to a side of the main body (210) close to the adapter slot (120), the second branch portion (230) being connected to a side of the main body (210) away from the adapter slot (120), a busbar (300) being clamped in the first branch portion (220), the second branch portion (230) comprising two first extension arms (231), the two first extension arms (231) both extending away from the adapter slot (120) and spaced apart from each other, the free end of each first extension arm (231) being bent and clamped into the corresponding first clamping slot (130).

2. The power rail according to claim 1, characterized in that The accommodating cavity (110) comprises a first side wall (112), a second side wall (113) and a third side wall (114) which are connected in sequence, and the first side wall (112) and the third side wall (114) are opposite to each other in the thickness direction of the housing (100); A first limiting plate (115) is provided at one end of the first side wall (112) close to the second side wall (113), and the first limiting plate (115) extends toward the third side wall (114); A second limiting plate (116) is provided at one end of the third side wall (114) close to the second side wall (113), and the second limiting plate (116) extends toward the first side wall (112); The second side wall (113) forms the first clamping groove (130) with the first limiting plate (115) and the second limiting plate (116) respectively.

3. The power rail according to claim 2, characterized in that The free end of the first extension arm (231) close to the first side wall (112) is bent in a direction perpendicular to the first side wall (112), and one end of the first limiting plate (115) away from the first side wall (112) abuts against the corresponding first extension arm (231); The free end of the first extension arm (231) close to the third side wall (114) is bent in a direction perpendicular to the third side wall (114), and one end of the second limiting plate (116) away from the third side wall (114) abuts against the corresponding first extension arm (231).

4. The power rail according to claim 2, characterized in that The first branch portion (220) comprises two second extension arms (221), the two second extension arms (221) extending toward the adapter slot (120) and spaced apart from each other, and one of the busbars (300) is inserted between the two second extension arms (221).

5. The power rail according to claim 4, characterized in that The third side wall (114) has a second slot (140); The first branch portion (220) further comprises a third extension arm (222), the fixed end of the third extension arm (222) being connected to the second extension arm (221) close to the third side wall (114), and the free end of the third extension arm (222) extending toward the third side wall (114) and snapping into the second snap-in slot (140).

6. The power rail according to claim 4, characterized in that The second extending arm (221) close to the first side wall (112) is provided with a third card slot (223), and the second extending arm (221) close to the third side wall (114) is provided with a fourth card slot (224), and the third card slot (223) and the fourth card slot (224) are opposite to each other in the thickness direction of the housing (100); Two sides of the busbar (300) are respectively inserted into the third slot (223) and the fourth slot (224).

7. The power rail according to claim 6, characterized in that The second extension arm (221) close to the first side wall (112) is provided with a first convex rib (225), and the first convex rib (225) is connected to a side of the third card slot (223) close to the adapter slot (120); The second extension arm (221) close to the second side wall (113) is provided with a second convex rib (226), and the second convex rib (226) is connected to a side of the fourth card slot (224) close to the adapter slot (120); The side of the busbar (300) facing the adapter abuts against the first convex rib (225) and the second convex rib (226) respectively.

8. The power rail according to claim 6, characterized in that The free end of the second extension arm (221) close to the first side wall (112) is bent toward the first side wall (112) and abuts against the first side wall (112).

9. The power rail according to claim 8, characterized in that The power rail further comprises a first cover body (400) and a second cover body (500), wherein the first cover body (400) and the second cover body (500) are respectively located at two ends of the shell (100) in the length direction; The first limiting plate (115), the first extension arm (231), the second extension arm (221) and the first side wall (112) are combined to form a cover body slot (600), wherein a portion of the first cover body (400) is inserted into one end of the cover body slot (600), and a portion of the second cover body (500) is inserted into the other end of the cover body slot (600).

10. A track socket, characterized in that: The track socket comprises at least one adapter and the power track according to any one of claims 1 to 9, and the power supply portion of the adapter is inserted into the housing (100) through the adapter slot (120).

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