Plug and track lamp applying same

Abstract

The utility model discloses a plug and a track lamp with the plug, and the plug comprises a body which comprises a first connecting part and a second connecting part; the at least two conductive parts are installed in the body, each conductive part comprises a first conductive part and a second conductive part which are integrally formed, the first conductive part protrudes out of the first connecting part and can elastically retract towards the interior of the first connecting part, and the second conductive part protrudes out of the second connecting part and can elastically retract towards the interior of the second connecting part; the plug can serve as an end plugging piece of one electric device to be installed on the end of one electric device, the first conductive part of the conductive piece is connected with the conductive structure on the electric device, the second conductive part of the conductive piece is connected with the conductive structure on the other electric device, and therefore the two electric devices are electrically conducted. And the conductive piece is integrally formed, so that the assembling procedures in the plug are greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a track lamp, especially a plug and a track lamp using the same. BACKGROUND

[0002] Some track lamps in the prior art use a needle structure or a lead wire to electrically connect the lamp body to a track or other electrical devices. The lead wire is usually pulled out from the plug of the lamp body, and the lead wire needs to be arranged and arranged during use, otherwise it is easy to block the light or interfere with other objects. Some lamp bodies are small in size and have limited internal installation space. The use of a needle structure for electrical conduction limits the installation position of the needle during assembly, affecting assembly efficiency. SUMMARY

[0003] The utility model aims to at least solve one of the above technical problems in the related art to some extent. To this end, the utility model provides a plug.

[0004] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0005] The utility model further provides a track lamp with the above plug.

[0006] According to the plug of the first aspect of the utility model embodiment, comprising:

[0007] The body includes a first connecting portion and a second connecting portion;

[0008] The conductive part is installed in the body, and the conductive part includes a first conductive part and a second conductive part formed integrally, the first conductive part protrudes out of the first connecting portion and can elastically retract into the first connecting portion, and the second conductive part protrudes out of the second connecting portion and can elastically retract into the second connecting portion.

[0009] According to the plug of the utility model embodiment, at least the following advantages are provided: the plug can be installed as an end plugging part of an electrical device on the end of the electrical device, the first conductive part of the conductive part is connected with the conductive structure on the electrical device, and the second conductive part is connected with the conductive structure on another electrical device, so that the two electrical devices are electrically connected. The conductive part is integrally formed, which greatly reduces the assembly process inside the plug.

[0010] According to some embodiments of the utility model, the conductive part is composed of a conductive metal strip, and the first conductive part and the second conductive part are respectively wound from both ends of the metal strip to form a ring structure.

[0011] According to some embodiments of the utility model, the first conductive part includes first arm, second arm, third arm and fourth arm which are connected in sequence, the first arm extends from the second conductive part, the second arm is bent and extends from the end of the first arm to the side where the second conductive part is located, the third arm is bent and extends from the end of the second arm to the first arm, the fourth arm is bent and extends from the end of the third arm in the direction away from the second conductive part, the fourth arm abuts on the first arm, and the first conductive part is protruded to the outside of the first connecting part at least at the connecting position of the second arm and the third arm.

[0012] According to some embodiments of the utility model, the first arm and the second arm form a first included angle which is an acute angle, the third arm and the first arm form a second included angle which is an acute angle, and the connecting position of the second arm and the third arm is arc-shaped.

[0013] According to some embodiments of the utility model, the body is provided with a mounting groove, the mounting groove includes a first groove body and a second groove body which are communicated with each other, the first groove body is located in the first connecting part, the second groove body is located in the second connecting part, the second conductive part is mounted on the second groove body, one end of the first groove body away from the second connecting part is provided with a hook part, the hook part extends in the direction of the side where the second connecting part is located, the first arm is mounted in the first groove body, the connecting position of the first arm and the second arm abuts on the end of the first groove body away from the second connecting part, and the hook part can abut on the second arm to limit the elastic deformation stroke of the second arm in the direction of the first included angle becoming larger.

[0014] According to some embodiments of the utility model, the second conductive part includes fifth arm, sixth arm, seventh arm and eighth arm which are connected in sequence, the fifth arm extends from the first conductive part, the sixth arm is bent and extends from the end of the fifth arm to the side where the second conductive part is located, the seventh arm is bent and extends from the end of the sixth arm to the fifth arm, the eighth arm is bent and extends from the end of the seventh arm in the direction away from the first conductive part, the eighth arm abuts on the fifth arm, and the second conductive part is protruded to the outside of the second connecting part at least at the connecting position of the sixth arm and the seventh arm.

[0015] According to some embodiments of the utility model, the sixth arm and the fifth arm form a third included angle which is an acute angle, the seventh arm and the fifth arm form a fourth included angle which is an acute angle, and the connecting position of the sixth arm and the seventh arm is arc-shaped.

[0016] According to some embodiments of the utility model, the body is internally provided with a mounting groove, the mounting groove comprises a first groove body and a second groove body which are in communication with each other, the first groove body is located in the first connecting part, the second groove body is located in the second connecting part, the first conductive part is mounted on the first groove body, the fifth arm is mounted in the second groove body, and the connecting part of the sixth arm and the seventh arm abuts on the end of the second groove body away from the first conductive part.

[0017] According to some embodiments of the utility model, the first conductive part and the second conductive part protrude from the same side of the body, the second connecting part is mounted with a knob on the side away from the protruding side of the second conductive part, and the knob can rotate relative to the second connecting part so as to make the knob turn outwards of the second connecting part or turn inwards of the second connecting part.

[0018] According to the track lamp of the second aspect of the utility model, the first connecting part is detachably inserted on the end of the lamp body, the first conductive part is in one-to-one pairing contact with the first conductive end inside the lamp body, the lamp body is detachably mounted on the guide rail together with the plug, and the second conductive part is in one-to-one pairing contact with the second conductive end on the guide rail.

[0019] According to the track lamp of the utility model, the lamp body and the guide rail are paired and electrically connected through the plug, the installation is convenient, and the conductive spring needle extending out of the lamp body does not need to be additionally arranged on the lamp body, so that the installation process of the lamp body is simplified.

[0020] Additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0022] Figure 1 is a structural schematic view of the plug;

[0023] Figure 2 is an exploded structural schematic view of the plug;

[0024] Figure 3 is a structural schematic view of the plug;

[0025] Figure 4 is a structural schematic view of the conductive part;

[0026] Figure 5 is Figure 1Another perspective view schematic diagram of the track lamp;

[0027] Figure 6 is Figure 5 Another use state schematic diagram of the track lamp;

[0028] Figure 7 is a partial structure exploded schematic diagram of the track lamp.

[0029] The reference signs: body 100; first connecting part 110; second connecting part 120; mounting groove 130; first groove body 131; second groove body 132; hook part 140; conductive part 200; first conductive part 210; first arm 211; second arm 212; third arm 213; fourth arm 214; first clamping angle 215; second clamping angle 216; second conductive part 220; fifth arm 221; sixth arm 222; seventh arm 223; eighth arm 224; third clamping angle 225; fourth clamping angle 226; actuating part 300; guide rail 400; second conductive end 410; lamp body 500; first conductive end 510. DETAILED DESCRIPTION

[0030] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0031] The present application relates to a plug, and further relates to a track lamp applied with the plug.

[0032] As Figure 1 , Figure 2 and Figure 3As shown, the plug includes a body 100 and a conductive piece 200. The body 100 includes a first connecting part 110 and a second connecting part 120. The first connecting part 110 and the second connecting part 120 can be provided in a block shape, and the first connecting part 110 is integrally formed from one side of the second connecting part 120. At least two conductive pieces 200 are installed in the body 100. The conductive pieces 200 can be provided in two, three or more, and the number of the conductive pieces 200 is determined according to the conductive structure of the track light matched with the plug. In the embodiment, two conductive pieces 200 are installed on the body 100, and the two conductive pieces 200 are arranged in parallel with each other. The conductive piece 200 includes a first conductive part 210 and a second conductive part 220, and the first conductive part 210 and the second conductive part 220 are integrally formed on the conductive piece 200, without the need for additional assembly operations of the first conductive part 210 or the second conductive part 220 relative to the conductive piece 200. The first conductive part 210 is located in the first connecting part 110, and the second conductive part 220 is located in the second connecting part 120. The first conductive part 210 protrudes out of the first connecting part 110, and the second conductive part 220 protrudes out of the second connecting part 120. The conductive piece 200 can be fixed in the body 100 by screwing, clamping or other methods. When an external force is applied, the first conductive part 210 can elastically retract into the interior of the first connecting part 110, and the second conductive part 220 can elastically retract into the interior of the second connecting part 120. The plug can be installed on the end of an electrical device as an end sealing piece of an electrical device, and the first conductive part 210 of the conductive piece 200 is connected to the conductive structure on the electrical device, and the second conductive part 220 is connected to the conductive structure on another electrical device, so that the two electrical devices are electrically connected. The conductive piece 200 is integrally formed, which greatly reduces the assembly process inside the plug. The electrical device does not need to draw a wire through the plug or other positions. The plug of the utility model is applied to a track light, for example Figure 7As shown, the track light further comprises a track 400 and a lamp body 500. The plug is detachably plugged on the end of the lamp body 500 through the first connecting part 110. The lamp body 500 can be internally provided with a first conductive part such as a circuit board, the first conductive part being integrated with lamp beads and first conductive ends 510, the first conductive ends 510 being provided with at least two, wherein the two first conductive ends 510 respectively serve as positive / negative poles or fire / zero lines. After the plug is mounted to the lamp body 500, the first conductive parts 210 of the conductive parts 200 on the plug are in one-to-one paired contact with the first conductive ends 510 in the lamp body 500, so that the conductive parts 200 and the first conductive ends 510 are in one-to-one paired electrical conduction. After the first conductive parts 210 are subjected to the force of the first conductive ends 510, the first conductive parts 210 elastically retract in the direction of the interior of the first connecting part 110, the first conductive parts 210 tend to elastically reset to protrude in the direction of the exterior of the first connecting part 110, so that the first conductive parts 210 can tightly abut on the first conductive ends 510. The second connecting part 120 is located at the exterior of the lamp body 500, and the second conductive part 220 is located at the exterior of the lamp body 500. The track 400 is internally provided with a second conductive part such as a circuit board, the second conductive part being provided with at least two second conductive ends 410; or the track 400 is internally provided with at least two conductive strips, each conductive strip serving as a second conductive end 410. The two second conductive ends 410 respectively serve as positive / negative poles or fire / zero lines. The lamp body 500 provided with the plug is detachably mounted to the track 400. After the mounting, the second conductive parts 220 on the conductive parts 200 are in one-to-one paired contact with the second conductive ends 410. After the second conductive parts 220 are subjected to the force of the second conductive ends 410, the second conductive parts 220 elastically retract in the direction of the interior of the second connecting part 120, the second conductive parts 220 tend to elastically reset to protrude in the direction of the exterior of the first connecting part 110, so that the second conductive parts 220 can tightly abut on the second conductive ends 410. The first conductive ends 510 of the lamp body 500 and the second conductive ends 410 on the track 400 are electrically conducted through the conductive parts 200 of the plug. The lamp body 500 can quickly mount and dismount the plug, can be paired and electrically connected with different tracks 400 by using different plugs, is convenient to install, does not need to additionally provide conductive elastic pins or lead-out wires extending to the exterior of the lamp body 500, and simplifies the installation process of the lamp body 500.

[0033] In an embodiment, as Figure 1 、 Figure 3 and Figure 4As shown, the conductive member 200 is formed by a conductive metal strip. The metal strip can be a long strip-shaped metal sheet or a columnar strip-shaped metal. The first conductive part 210 and the second conductive part 220 are respectively formed by winding the metal strip from two ends thereof into a loop structure. In the illustrated direction, the left end of the conductive member 200 is wound clockwise upward to form the second conductive part 220, and the right end of the conductive member 200 is wound counterclockwise upward to form the first conductive part 210. The loop formed by winding the first conductive part 210 and the second conductive part 220 can be a circular loop, a triangular loop, or a polygonal loop, etc.

[0034] Specifically, as Figure 3As shown, the second conductive part 220 and the first conductive part 210 are distributed on the conductive piece 200. The first conductive part 210 includes a first arm 211, a second arm 212, a third arm 213 and a fourth arm 214 connected in sequence. In the direction shown, the first arm 211 extends from the second conductive part 220 to the right, and the first arm 211 can be provided as a straight arm. The second arm 212 extends from the right end of the first arm 211 to the side where the second conductive part 220 is located (upward to the left), the third arm 213 extends from the upper end of the second arm 212 downward to the right, and the fourth arm 214 extends from the lower end of the third arm 213 to the right. The fourth arm 214 abuts the upper side of the first arm 211. The first arm 211, the second arm 212, the third arm 213 and the fourth arm 214 form an internal ring structure with a generally triangular shape. During installation, the first arm 211 is fixed in the first connecting part 110, and the connection between the second arm 212 and the third arm 213 protrudes outside the first connecting part 110. In actual use, after the first connecting part 110 is inserted into the lamp body 500, the connection between the second arm 212 and the third arm 213 abuts the first conductive end 510 of the lamp body 500. The first conductive end 510 exerts a force on the connection between the second arm 212 and the third arm 213 in the direction of the first arm 211, the second arm 212 swings downward toward the first arm 211, the connection between the first arm 211 and the second arm 212 elastically deforms, the third arm 213 swings to the right toward the side where the second arm 212 is located, the connection between the second arm 212 and the third arm 213 elastically deforms, the fourth arm 214 slides to the right along the first arm 211, the fourth arm 214 can be raised upward relative to the first arm 211, or the fourth arm 214 remains attached to the first arm 211, the fourth arm 214 guides the swinging direction of the third arm 213, so that the connection between the second arm 212 and the third arm 213 is closer to the first arm 211, that is, the connection between the second arm 212 and the third arm 213 is retracted toward the inside of the first connecting part 110. The side of the second arm 212 close to the third arm 213 (the left side of the second arm 212) forms a first included angle 215 with the first arm 211, and the side of the third arm 213 close to the second conductive part 220 (the left side of the third arm 213) forms a second included angle 216 with the first arm 211. The connection between the second arm 212 and the third arm 213 is arc-shaped. The acute angles of the first included angle 215 and the second included angle 216 enable the second arm 212 and the third arm 213 to stably elastically swing when the first conductive part 210 is retracted by an external force or elastically resets when the external force is lost, which is equivalent to limiting the swing stroke of the second arm 212 and the third arm 213, so that the second arm 212 and the third arm 213 do not swing too much when resetting, thereby avoiding interference with the connecting part or the inside of the lamp body 500.The arc-shaped connection of the second arm 212 and the third arm 213 can reduce the friction with the first conductive end 510 inside the lamp body 500. When the first connecting part 110 is inserted into the lamp body 500, the right side of the second arm 212 faces the inside of the lamp body 500, and the second arm 212 can swing to the left after the first conductive part 210 is pressed, thereby ensuring the smoothness of the insertion process of the first connecting part 110.

[0035] Based on the above embodiments, as shown in Figure 1 、 Figure 2 and Figure 3 , the body 100 is provided with a mounting groove 130. The number of mounting grooves 130 is set according to the number of conductive parts 200, one conductive part 200 is matched with one mounting groove 130. The mounting groove 130 includes a first groove body 131 and a second groove body 132 which are in communication with each other, the first groove body 131 is located in the first connecting part 110, and the second groove body 132 is located in the second connecting part 120. That is, the mounting groove 130 penetrates the first connecting part 110 and the second connecting part 120. The second conductive part 220 is installed on the second groove body 132, and the first groove body 131 is provided with a hook part 140 at one end away from the second connecting part 120. In the direction shown in the figure, the hook part 140 is arranged at the right end of the first groove body 131, and extends upward from the right end of the first groove body 131 and then extends towards the side where the second connecting part 120 is located (to the left). The first arm 211 is installed in the first groove body 131, and the connection between the first arm 211 and the second arm 212 abuts on the end of the first groove body 131 away from the second connecting part 120 (i.e. the right end of the first groove body 131). The hook part 140 can abut on the second arm 212. When the first connecting part 110 is not subjected to the force of the first conductive end 510, the second arm 212 abuts on the hook part 140. On the one hand, the hook part 140 limits the elastic deformation of the second arm 212 in the direction of increasing the first included angle 215, and on the other hand, it can limit the right side of the first conductive part 210 from leaving the first groove part.

[0036] In an embodiment, as shown in Figure 4As shown, the second conductive part 220 includes a fifth arm 221, a sixth arm 222, a seventh arm 223 and an eighth arm 224 connected in sequence. In the direction shown, the fifth arm 221 extends leftward from the first conductive part 210, and can be a straight arm. The fifth arm 221 and the first arm 211 described above can form a unitary straight arm. The sixth arm 222 extends from the left end of the fifth arm 221 to the side where the second conductive part 220 is located (upward and to the right). The seventh arm 223 extends from the upper end of the sixth arm 222 to the fifth arm 221 (downward and to the left). The eighth arm 224 extends from the lower end of the seventh arm 223 to the left in a direction away from the first conductive part 210. The eighth arm 224 abuts the fifth arm 221. The second conductive part 220 is mounted in the second connecting part 120, and at least the connection between the sixth arm 222 and the seventh arm 223 of the second conductive part 220 protrudes outside the second connecting part 120. The second conductive part 220 deforms elastically in a similar manner to the first conductive part 210 described above. Specifically, the plug is applied to the lamp body 500, and the lamp body 500 is mounted in the rail 400. The connection between the sixth arm 222 and the seventh arm 223 abuts the second conductive end 410 of the rail 400, and is subjected to the force of the second conductive end 410. The sixth arm 222 swings downward to the right, and the connection between the fifth arm 221 and the sixth arm 222 deforms elastically. The seventh arm 223 swings to the left, and the eighth arm 224 moves leftward along the fifth arm 221. The connection between the sixth arm 222 and the seventh arm 223 is closer to the fifth arm 221, causing the connection between the sixth arm 222 and the seventh arm 223 to retract inwardly of the second connecting part 120. The side of the sixth arm 222 closer to the seventh arm 223 (the right side of the sixth arm 222) forms a third included angle 225 with the fifth arm 221, which is an acute angle. The side of the seventh arm 223 closer to the first conductive part 210 (the right side of the seventh arm 223) forms a fourth included angle 226 with the fifth arm 221, which is an acute angle. The connection between the sixth arm 222 and the seventh arm 223 is arc-shaped. The third included angle 225 and the fourth included angle 226 are acute angles, which can limit the swinging direction and stroke of the sixth arm 222 and the seventh arm 223 when subjected to an external force or elastically returns after losing the external force. The connection between the sixth arm 222 and the seventh arm 223 is arc-shaped, which can reduce the friction when contacting the second conductive end 410 of the rail 400.

[0037] Based on the above embodiments, as Figure 1 、 Figure 3 and Figure 4As shown, the body 100 is provided with a mounting groove 130. The number of the mounting groove 130 is set according to the number of the conductive part 200, one conductive part 200 is matched with one mounting groove 130. The mounting groove 130 comprises a first groove body 131 and a second groove body 132 which are communicated with each other, the first groove body 131 is located in the first connecting part 110, and the second groove body 132 is located in the second connecting part 120. That is, the mounting groove 130 penetrates through the first connecting part 110 and the second connecting part 120. The first conductive part 210 is mounted on the first groove body 131. The fifth arm 221 is mounted in the second groove body 132, and the junction of the sixth arm 222 and the seventh arm 223 abuts on the end of the second groove body 132 which is away from the first conductive part 210 (i.e. the left end of the second groove body 132).

[0038] In an embodiment, as shown in Figure 1 、 Figure 5 and Figure 6 , the first conductive part 210 and the second conductive part 220 protrude from the same side of the body 100. The second connecting part 120 is mounted with a knob 300 on the side which is away from the protruding side of the second conductive part 220. In the direction shown in the figure, the first conductive part 210 and the second conductive part 220 both protrude upward from the upper side of the body 100. The knob 300 is mounted on the lower side of the second connecting part 120. The knob 300 can rotate relative to the second connecting part 120. It can be that the knob 300 is provided with a rotating shaft, and the knob 300 is rotatably mounted on the lower side of the second connecting part 120 through the rotating shaft. When the knob 300 is flipped upward relative to the second connecting part 120, the knob 300 can be hidden into the second connecting part 120. When the knob 300 is flipped downward, the knob 300 can be extended below the second connecting part 120. In use, the lamp body 500 is mounted on the rail 400 together with the plug. At this time, the knob 300 is flipped downward relative to the plug by its own gravity or by being flipped by the user, and the user can hold the knob 300 with his hand and pull out the plug together with the lamp body 500 from the rail 400. When the knob 300 is not needed to be used, the knob 300 is rotated to be hidden in the second connecting part 120.

[0039] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0040] In addition, the terms "first", "second", etc. are used only for descriptive purposes and do not connote or imply relative importance or an ordering between or among the indicated technical features. Accordingly, a feature defined with "first", "second", etc. can include one or more of the features implicitly or explicitly. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] In the present application, unless otherwise explicitly specified and limited, "on" or "under" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "above" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. "Below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0043] In the description of the present application, the description of the terms "some embodiments" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0044] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A plug, characterized in that The utility model relates to a kind of electrically conductive connector, including: A body (100) comprising a first connecting portion (110) and a second connecting portion (120); At least two electrically conductive pieces (200) are installed in the body (100), and the electrically conductive piece (200) comprises a first electrically conductive portion (210) and a second electrically conductive portion (220) integrally formed, the first electrically conductive portion (210) protrudes out of the first connecting portion (110) and can elastically retract to the inside of the first connecting portion (110), and the second electrically conductive portion (220) protrudes out of the second connecting portion (120) and can elastically retract to the inside of the second connecting portion (120).

2. The plug of claim 1, wherein: The electrically conductive piece (200) is composed of a conductive metal strip, and the first electrically conductive portion (210) and the second electrically conductive portion (220) are respectively wound from both ends of the metal strip into a ring structure.

3. A plug according to claim 1 or 2, characterised in that: The first electrically conductive portion (210) comprises a first arm (211), a second arm (212), a third arm (213) and a fourth arm (214) connected in sequence, the first arm (211) extends from the second electrically conductive portion (220), the second arm (212) bends and extends from the end of the first arm (211) to the side where the second electrically conductive portion (220) is located, the third arm (213) bends and extends from the end of the second arm (212) to the first arm (211), and the fourth arm (214) bends and extends from the end of the third arm (213) in a direction away from the second electrically conductive portion (220), the fourth arm (214) abuts on the first arm (211), and the first electrically conductive portion (210) protrudes out of the first connecting portion (110) at least at the connection of the second arm (212) and the third arm (213).

4. A plug according to claim 3, characterised in that: The side of the second arm (212) close to the third arm (213) forms a first included angle (215) with the first arm (211) at an acute angle, the side of the third arm (213) close to the second electrically conductive portion (220) forms a second included angle (216) with the first arm (211) at an acute angle, and the connection of the second arm (212) and the third arm (213) is arc-shaped.

5. A plug according to claim 4, characterised in that: The body (100) is provided with a mounting groove (130), the mounting groove (130) comprises a first groove body (131) and a second groove body (132) which are communicated with each other, the first groove body (131) is located in the first connecting part (110), the second groove body (132) is located in the second connecting part (120), the second conductive part (220) is mounted on the second groove body (132), one end of the first groove body (131) away from the second connecting part (120) is provided with a hook part (140), the hook part (140) extends towards the side where the second connecting part (120) is located, the first arm (211) is mounted in the first groove body (131), and the connection part of the first arm (211) and the second arm (212) is abutted on the end of the first groove body (131) away from the second connecting part (120), and the hook part (140) can be abutted on the second arm (212) to limit the elastic deformation stroke of the second arm (212) in the direction that the first included angle (215) becomes larger.

6. A plug according to claim 1 or 2, characterised in that: The second conductive part (220) comprises a fifth arm (221), a sixth arm (222), a seventh arm (223) and an eighth arm (224) which are sequentially connected, the fifth arm (221) extends from the first conductive part (210), the sixth arm (222) is bent and extends from the end of the fifth arm (221) to the side where the second conductive part (220) is located, the seventh arm (223) is bent and extends from the end of the sixth arm (222) to the fifth arm (221), the eighth arm (224) is bent and extends from the end of the seventh arm (223) in a direction away from the first conductive part (210), and the eighth arm (224) is abutted on the fifth arm (221), and at least the connection part of the sixth arm (222) and the seventh arm (223) on the second conductive part (220) protrudes out of the second connecting part (120).

7. A plug according to claim 6, characterised in that: The sixth arm (222) and the fifth arm (221) form a third included angle (225) with an acute angle on one side close to the seventh arm (223), the seventh arm (223) and the fifth arm (221) form a fourth included angle (226) with an acute angle on one side close to the first conductive part (210), and the connection part of the sixth arm (222) and the seventh arm (223) is arc-shaped.

8. A plug according to claim 7, characterised in that: The body (100) is provided with a mounting groove (130), the mounting groove (130) comprises a first groove body (131) and a second groove body (132) which are communicated with each other, the first groove body (131) is located in the first connecting part (110), the second groove body (132) is located in the second connecting part (120), the first conductive part (210) is mounted on the first groove body (131), the fifth arm (221) is mounted in the second groove body (132), and the connection part of the sixth arm (222) and the seventh arm (223) abuts on the end of the second groove body (132) away from the first conductive part (210).

9. The plug of claim 1, wherein: The first conductive part (210) and the second conductive part (220) protrude from the same side of the body (100), the second connecting part (120) is provided with a knob (300) on the side away from the protruding side of the second conductive part (220), the knob (300) can rotate relative to the second connecting part (120) so that the knob (300) is turned to extend out of the second connecting part (120) or is turned to hide in the second connecting part (120).

10. A track light characterized by: The plug of any one of claims 1 to 9, a rail (400), a lamp body (500) and the plug are included, the first connecting part (110) is detachably inserted on the end of the lamp body (500), the first conductive part (210) is in one-to-one matched contact with a first conductive end (510) inside the lamp body (500), the lamp body (500) is detachably mounted on the rail (400) together with the plug, and the second conductive part (220) is in one-to-one matched contact with a second conductive end (410) on the rail (400).

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