Locking and positioning mechanism and track lamp containing same

Abstract

The application provides a locking and limiting mechanism, which comprises a driving part arranged in cooperation with a track box and being operable, and a locking part for limiting the movement of the driving part in a storage state, wherein the driving part comprises a swing arm, the swing arm moves along an operation plane, and a hook part is arranged at a free end of the swing arm and extends to the inside of the track box; the locking part is operable relative to the operation plane, and the locking part comprises a sliding block and a buckling block which are fixedly connected, the sliding block is at least partially exposed to the track box, a slot is arranged on the outside of the track box, and the outside of the track box and the locking part are communicated through the slot; in the storage state, the hook part is buckled with the buckling block through the slot, and in an open state, the sliding block moves vertically and makes the buckling block away from the hook part. The application also provides a track lamp containing the same. In the locking and limiting mechanism, the rotation track of the swing arm is stable, and the unlocking process can avoid the misoperation triggering, so that the product has higher reliability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lamp installation, in particular to a locking and positioning mechanism and a track lamp comprising the same. BACKGROUND

[0002] Track lamps are lamps installed on tracks. Track adapters of track lamps are installed in matching tracks. The tracks have conductive metal strips on both sides, and the track adapters have rotatable conductive metal sheets. When installed, the conductive metal sheets on the track lamps contact the conductive metal strips inside the tracks, enabling the track lamps to be powered and lit.

[0003] In existing track lamps, a rotatable cantilever structure is often used to link the conductive metal sheets, enabling the track lamp to contact and conduct electricity with the track. For example, in the Chinese patent application No. 202011488890.7, a power taking column is connected to an extended handle, which is used to rotate the power taking column. The conductive sheet on the power taking column is rotated to contact the conductive metal strip inside the track, enabling the track lamp to be powered and lit. The handle is convenient and labor-saving, and has been widely used.

[0004] In existing track lamps, the cantilever structure achieves various purposes of positioning by corresponding block structures in the track box. Due to the lever principle of the cantilever structure, the force required to drive its rotation is small. Sometimes, the track lamp can still be operated to rotate the cantilever when it is not completely installed in place. Moreover, when the track lamp is installed, if it is subjected to an unexpected force or an excessive operating force, the block resistance can be easily overcome, causing the conductive sheet to rotate excessively. This may cause the conductive sheet to deviate from the optimal contact position, resulting in poor contact, or even damage the limiting structure of the conductive sheet, especially when the track lamp is not installed in place and is forcibly operated to rotate.

[0005] Therefore, the technical personnel in the field are committed to developing a new type of locking and positioning mechanism to improve the stability of the installation and connection of the track lamp. SUMMARY

[0006] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present application is that the swing arm locking and positioning mechanism is easily damaged and fails when subjected to an unexpected force or an excessive operating force during the use of the track lamp.

[0007] In order to achieve the above object, the application provides a locking and limiting mechanism of a track light, which comprises a driving part arranged in cooperation with a track box and operable, the driving part being movable at least partially along the outside of the track box, and a locking part arranged in correspondence with the driving part through the side of the track box, the locking part comprising a stowed state and an open state, in the stowed state, the movement of the driving part is limited by the locking part, wherein the driving part comprises a swing arm, the swing arm is movable along an operation plane, and the free end of the swing arm is provided with a hook part extending to the inside of the track box; the locking part is operable relative to the operation plane, the locking part comprises a sliding block and a buckling block fixedly connected, the sliding block is exposed at least partially from the track box, the outside of the track box is provided with a slot, and the outside of the track box and the locking part are communicated through the slot; in the stowed state, the hook part is buckled through the slot and the buckling block, and in the open state, the sliding block is vertically movable and the buckling block is separated from the hook part.

[0008] Further, the driving part further comprises a transmission plate, the transmission plate comprises a rotating shaft movably connected with the track box, and the swing arm and the transmission plate are fixedly connected and rotatable along the axis of the rotating shaft.

[0009] Further, the transmission plate and the swing arm are detachably connected, the transmission plate is formed with an embedding block, and the swing arm comprises a mounting groove matched with the embedding block.

[0010] Further, the radial dimension of the embedding block along the thickness direction thereof decreases, and the small end of the embedding block faces the mounting groove, and the mounting groove is provided with an anti-escape block corresponding to the embedding block.

[0011] Further, the transmission plate is formed with a positioning block, the inside of the track box is formed with a sliding groove suitable for the movement of the positioning block, and the sliding groove is formed with a first protruding part close to the end position and interfering with the positioning block.

[0012] Further, in the locking part, the sliding block is provided with two and arranged on the two sides of the buckling block respectively, the sliding block and the buckling block form a clamping groove matched with the movement of the hook part, and the buckling block is provided with a guide surface facing the swing arm.

[0013] Further, the locking part and the track box are provided with an elastic reset mechanism.

[0014] Further, the free end of the swing arm is further fixedly provided with a handle extending to the outside of the track box.

[0015] Further, the buckling block has a minimum unlocking stroke, and when the moving distance of the buckling block is greater than the minimum unlocking stroke in the open state, the buckling block can be separated from the hook part.

[0016] Further, the lower side of the swing arm is provided with a support plate fixed to the outside of the track box, the periphery of the support plate is formed with an arc-shaped ring wall, and the inside of the ring wall and the upper end surface of the support plate limit the swing arm.

[0017] A track light includes a locking and limiting mechanism as described above, wherein the power take-off head of the track box is installed between the two guide rails, a conductive spring is provided inside the track box, and an opening is provided on the side of the track box for the conductive spring to extend and contact the guide rail. The track box includes a mounting surface, through which a slider passes and protrudes from the mounting surface. During installation, the mounting surface is attached to the bottom surface of the guide rail.

[0018] In one embodiment of the present invention, the hook portion includes an abutting surface that engages with the fastening block, and the height of the abutting surface is less than the height of the slider protruding from the mounting surface.

[0019] The locking and limiting mechanism and its track light of the present invention have the following advantages compared with the prior art:

[0020] (1) A hook part is provided at the free end of the swing arm and a locking part is used to retract and lock the swing arm. The track light needs to be unlocked from the retracted state by applying force to the slider, so as to avoid misoperation. This unlocking operation is suitable for simultaneous installation with the guide rail.

[0021] (2) The swing arm works in conjunction with other limiting structures of the track light to stabilize the movement trajectory of the swing arm, prevent the conductive structure from being deformed or damaged due to improper operation of the swing arm, and improve the reliability of the product.

[0022] The following will further explain the concept, specific structure, and technical effects of the present invention in conjunction with the accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the locking and limiting mechanism of the track light according to the present invention during track light installation.

[0024] Figure 2 This is a cross-sectional view of the locking and limiting mechanism of the present invention and a schematic diagram showing its positional relationship with the guide rail.

[0025] Figure 3 This is a schematic diagram of the positional relationship between the hook and the fastening block in the locking and limiting mechanism of the present invention, wherein (a) and (b) are two different positional configurations.

[0026] Figure 4 This is a schematic diagram of the structure of the driving part and the locking part in the locking and limiting mechanism of the present invention.

[0027] Figure 5 This is a schematic diagram of the bottom structure of the driving part in the locking and limiting mechanism of the present invention.

[0028] Figure 6 This is a schematic diagram of the locking and limiting mechanism of the present invention installed in the track box.

[0029] Figure 7This is a schematic diagram of the working state of the locking and limiting mechanism of the present invention, wherein (a) is the retracted state and (b) is the open state.

[0030] Figure 8 This is an installation diagram of the track light including the locking and limiting mechanism of the present invention.

[0031] The components are: 100 drive unit, 200 locking unit, 300 track box, 310 power take-up head, 320 mounting surface, 400 guide rail, 500 U-shaped profile, 11 swing arm, 111 mounting groove, 112 anti-detachment block, 113 stop bar, 12 hook part, 121 abutment surface, 13 transmission plate, 131 rotating shaft, 132 insert block, 133 positioning block, 14 handle, 21 slider, 22 snap-fit ​​block, 221 guide surface, 222 locking surface, 23 slot, 24 elastic reset mechanism, 25 guide post, 31 slot, 32 slide groove, 33 first protrusion, 34 power take-up post, 35 conductive spring, 36 clearance groove, 37 support plate, 371 ring wall, 372 second protrusion, and d minimum unlocking stroke. Detailed Implementation

[0032] like Figure 1 and Figure 2 The diagram shows a locking and limiting mechanism for a track light according to the present invention, comprising a driving part 100 and a locking part 200. The driving part 100 is operably connected to a track box 300, and at least partially moves along the outer side of the track box 300. The locking part 200 is disposed on the side of the track box 300 and correspondingly disposed to the driving part 100, including a retracted state and an open state. In the retracted state, the locking part 200 restricts the movement of the driving part 100.

[0033] The drive unit 100 includes a swing arm 11 that moves along an operating plane. The free end of the swing arm 11 has a hook portion 12 extending inwards towards the track box 300, configured to engage with the locking unit 200. Furthermore, the drive unit 100 includes a transmission plate 13, which includes a rotating shaft 131 movably connected to the track box 300. The swing arm 11 and the transmission plate 13 are fixedly connected. A handle 14 is also fixedly provided at the free end of the swing arm 11, extending outwards from the track box 300. Operating the handle 14 allows the swing arm 11 to rotate about the center of the rotating shaft 131. The plane along the rotation trajectory of the swing arm 11 is the operating plane. The track box 300 has an inner cavity in which the transmission plate 13 and other components move within the track box 300.

[0034] The locking part 200 is operably movable relative to the operating plane and includes a slider 21 and a latching block 22 fixedly connected. The slider 21 is at least partially exposed outside the track box 300, so the locking part 200 can be moved from the outside by driving the slider 21 (e.g., pushing, pulling). The slider 21 and the latching block 22 can be connected separately, connected by a transmission component, or integrally formed. The movement of the slider 21 drives the movement of the locking part 200. A slot 31 is provided on the outside of the track box 300, and the outside of the track box 300 and the locking part 200 are connected through the slot 31. The direction of movement of the locking part 200 forms an angle with the operating plane of the swing arm 11. Preferably, the direction of movement of the locking part 200 is perpendicular to the operating plane of the swing arm 11. In the retracted state, the hook part 12 of the swing arm 11 enters the slot 31 and engages with the latching block 22. In the open state, the slider 21 moves vertically and causes the latching block 22 to disengage from the hook part 12.

[0035] In the locking part 200, the fastening block 22 has a guide surface 221 on the side facing the swing arm 11 and a locking surface 222 on the side facing away. Preferably, the guide surface 221 is an inclined surface. The head of the hook part 12 faces the guide surface 221, and the tail forms an abutment surface 121. The abutment surface 121 is formed by the tail of the hook part 12 being recessed on the side opposite to the locking part 200, and can be a vertical straight surface. During the movement of the hook part 12 toward the fastening block 22, the front end of the hook part 12 slides along the guide surface 221. After sliding past the guide surface 221, the locking surface 222 of the fastening block 22 and the abutment surface 121 of the hook part 12 abut against each other, thereby achieving engagement. The front end of the hook part 12 is configured to make smooth contact with the guide surface 221, for example, having a straight inclined surface or a smooth curved surface.

[0036] Preferably, two sliders 21 are configured and connected to both sides of the latching block 22, and cooperate with the latching block 22 to form a slot 23. The slot 23 is suitable for limiting the movement of the hook part 12 on both sides when it moves through, which is beneficial for the hook part 12 to align with the guide surface 221. Further, an elastic reset mechanism 24 is provided between the locking part 200 and the track box 300. Optionally, the elastic reset mechanism 24 is a spring, and the latching block 22 is provided with a receiving groove facing the bottom of the track box 300, with one end of the spring placed in the receiving groove. Further, the latching block 22 is connected to a guide post 25. The guide post 25 is movably connected to the track box 300, causing the locking part 200 to move directionally along the direction of the guide post 25. The spring is located on the periphery of the guide post 25. The locking part 200 moves towards the bottom of the track box 300 under the action of external force, and is reset by the elastic reset mechanism 24 when no external force is applied.

[0037] like Figure 3In the embodiment shown in (a), the guide surface 221 is an inwardly and upwardly inclined surface. When the drive arm 11 rotates toward the track box 300, the hook part 12 inserts into the slot 31 of the track box 300 and presses against the guide surface 221, causing the latching block 22 to move downward. After the hook part 12 slides and passes over the guide surface 221, the pressing force is released, and the elastic reset mechanism 24 causes the latching block 22 to move upward. The hook part 12 abuts against the latching block 22, thereby forming a retracted state. When the slider 21 and the latching block 22 are fixedly connected and move in the same direction, when the slider 21 is retracted into the track box 300 by an external force, for example, when it moves downward, the latching block 22 moves downward at the same time, leaving the hook part 12 and thus releasing the retracted state. At this time, the swing arm 11 can rotate away from the slot 31 of the track box 300 and swing outward along the track box 300.

[0038] In such Figure 3 In another embodiment shown in (b), the guide surface 221 can also be inclined outward and upward. Thus, under the pressure of the hook portion 12 pressing the guide surface 221, the latching block 22 moves upward. When retracted, the latching block 22 returns to its original position and moves downward, with the locking surface 222 abutting against the hook portion 12 to prevent it from disengaging. The movement of the slider 21 drives the latching block 22 to move upward away from the hook portion 12, thereby releasing the retracted state. If the slider 21 is subjected to a downward force, in order for the driven latching block 22 to move upward, the slider 21 and the latching block 22 can be connected by a transmission mechanism, such as a connecting rod, gear, or other transmission methods commonly used by those skilled in the art, which will not be elaborated here.

[0039] Furthermore, the transmission plate 13 and the swing arm 11 are configured to be detachably connected, such as... Figure 4 As shown, the transmission plate 13 and the swing arm 11 are connected by a mating insert block 132 and a mounting groove 111. For example, in this embodiment, the free end of the transmission plate 13 forms an insert block 132 that mates with the swing arm 11, and the swing arm 11 includes a mounting groove 111 that fits the insert block 132. The radial dimension of the insert block 132 decreases along its thickness direction. Optionally, the cross-section of the insert block 132 is an inverted trapezoid, with the small end of the insert block 132 facing the mounting groove 111. When the mounting groove 111 is fitted, the small end of the insert block 132 is inserted first, and finally the mounting groove 111 engages and is fixed with the large end of the insert block 132. Furthermore, an anti-disengagement block 112 is provided on the outside of the mounting groove 111 relative to the large end of the insert block 132 to prevent the insert block 132 from disengaging in the opposite direction.

[0040] like Figure 5 and Figure 6As shown, a positioning block 133 is formed on the transmission plate 13, and a groove 32 adapted to the movement trajectory of the positioning block 133 is formed on the inner side of the track box 300. A first protrusion 33 interfering with the positioning block 133 is formed near the end of the groove 32. In use, the positioning block 133 rotates along the groove 32, stabilizing the rotation trajectory of the swing arm 11. After overcoming the resistance of the first protrusion 33, the positioning block 133 slides into the end of the groove 32 and is constrained by the first protrusion 33 to achieve a limiting effect.

[0041] Based on the aforementioned locking and limiting mechanism, the present invention also provides a track light having the same. The track light is mounted on a horizontally arranged double-sided guide rail 400. A power-taking post 34 is installed inside the track box 300. A conductive spring 35 is disposed on the power-taking post 34 and extends laterally. The power-taking post 34 is fixedly connected to the drive unit 100 and rotates synchronously with the swing arm 11 under the action of the drive unit 100. A power-taking head 310 is located at the top of the track box 300 and is installed between the double-sided guide rails 400. A cavity for the conductive spring 35 to move is provided inside the track box 300, and an opening is provided on the side of the track box 300 for the conductive spring 35 to extend and contact the guide rail 400.

[0042] The transmission plate 13 is installed inside the track box 300 and the rotating shaft 131 is arranged vertically. The track box 300 has a mounting surface 320 that is adapted to the guide rail 400, and the side of the track box 300 is provided with a clearance groove 36 along the lower side of the mounting surface 320, so that the free end of the transmission plate 13 extends out of the track box 300 to connect to the swing arm 11. The swing arm 11 is driven by the handle 14 to rotate horizontally outside the track box 300. The rotation plane is restricted by the mounting surface 320, and the rotation axis of the swing arm 11 coincides with the center line of the rotating shaft 131 of the transmission plate 13.

[0043] The locking part 200 is mounted on the track box 300 and moves vertically. The slider 21 in the locking part 200 passes through the mounting surface 320 and protrudes above the mounting surface 320. Thus, when the track box 300 is installed from bottom to top toward the guide rail 400, the power take-off head 310 of the track box 300 enters between the guide rails 400, the mounting surface 320 abuts against the bottom surface of the guide rail 400, and the protruding part of the slider 21 is pressed and slides inward toward the track box 300. In the locking part 200, the latching block 22 has a minimum unlocking stroke d, which is greater than or equal to the recessed depth of the abutment surface 121 of the hook part 12. The movement of the slider 21 drives the latching block 22 to move synchronously. When the movement distance of the latching block 22 is greater than the minimum unlocking stroke d, it can disengage from the hook part 12, thereby unlocking. However, if the movement distance of the latching block 22 is insufficient, it will still interfere with the hook part 12 and cannot disengage the hook part 12.

[0044] like Figure 7As shown, in the retracted state, the hook portion 12 of the swing arm 11 enters the slot 31 of the track box 300 and is restricted by the locking portion 200. At the same time, the conductive spring 35 of the track box 300 is retracted into the inner cavity of the track box 300. At this time, the track box 300 is ready for installation. After the track box 300 is correctly installed, the retracted state is released. In the open state, the swing arm 11 is rotated by operation, causing the conductive spring 35 to rotate and extend out of the track box 300. When the swing arm 11 rotates to the end of the slide groove 32 and reaches the set position, it is constrained by the first protrusion 33. The swing arm 11 remains in a fixed position, and the conductive spring 35 contacts the guide rail 400 in a fixed form, achieving the locking effect. For example, when the conductive spring 35 is in the retracted state, it is housed within the track box 300 at an angle aligned with the length direction of the track box 300. After unlocking, it rotates with the swing arm 11. After the swing arm 11 rotates 90°, the conductive spring 35 extends to both sides and contacts the guide rail 400. At this time, the swing arm 11 reaches the set position constrained by the first protrusion 33 of the slide rail. Due to the limiting effect, the state of conductive contact of the swing arm 11 is not easily affected by external interference.

[0045] Preferably, a support plate 37 is fixedly installed on the outer side of the track box 300, and a corresponding swing arm 11 is disposed on the lower side of the swing arm 11. The upper end face of the support plate 37 abuts against the swing arm 11, and an arc-shaped annular wall 371 is formed on the periphery of the support plate 37. An arc-shaped stop bar 113 is provided on the lower end face of the swing arm 11 along the radially outward side of rotation. Furthermore, the insert block 132 on the transmission plate 13 passes through the swing arm 11 and protrudes from the lower end face of the swing arm 11. Figure 6 As shown, as the swing arm 11 rotates along the pivot 131, the stop bar 113 and the interlocking block 132 abut against the inner side of the annular wall 371, while the support plate 37 supports the swing arm 11. This, combined with the mounting surface 320 and the clearance groove 36, ensures the stability of the overall movement trajectory of the drive unit 100. Thus, the conductive spring 35 contacts the guide rail 400 in a predetermined shape, ensuring reliable operation. Furthermore, a second protrusion 372 is formed on the annular wall 371, which limits the swing arm 11 after it rotates to a predetermined position. In this embodiment, the interlocking block 132 extending to the lower end face of the swing arm 11 is limited by the interference of the second protrusion 372 along its rotation trajectory.

[0046] In one feasible implementation, the height of the abutment surface 121 of the hook portion 12 is less than the height of the portion of the slider 21 protruding from the track box 300. When the bottom surface of the guide rail 400 is flat, during the installation of the track light onto the guide rail 400, the bottom surface of the guide rail 400 abuts against the mounting surface 320, causing the exposed slider 21 to be fully pressed in. This provides sufficient travel for the slider 21, allowing the latching block 22 to disengage. This releases the locking mechanism of the swing arm 11, enabling it to rotate freely. The power take-off head 310 contains a rotatable conductive spring 35. The rotation of the swing arm 11 causes the conductive spring 35 to contact the conductive metal strip inside the guide rail 400, thus energizing the track light.

[0047] like Figure 8 The diagram illustrates an embodiment of a track light provided by this invention. A guide rail 400 is suspended from the ceiling. A track box 300 is positioned inside an upward-facing U-shaped profile 500, which completely encloses the track. A strip-shaped notch is provided on the outer side of the U-shaped profile 500 for the handle 14 to extend and rotate. The mounting surface 320 is exposed at the bottom of the U-shaped profile 500. During installation, the bottom surface of the track extends into the U-shaped profile 500 and presses against the slider 21, causing the slider 21 to be pressed in, thus releasing the retracted state.

[0048] Accordingly, the present invention provides a method for installing a track light: The track box 300 is installed from bottom to top onto the guide rail 400, with the mounting surface 320 of the track box 300 abutting against the bottom surface of the guide rail 400. The slider 21 is pressed and slides inwards towards the track box 300, causing the fastening block 22 to move and release the lock on the hook portion 12. The swing arm 11 is rotated, causing the conductive spring 35 to rotate and extend out of the track box 300. Further, when the swing arm 11 rotates to a set position, the conductive spring 35 remains in contact with the guide rail 400, and the swing arm 11 is constrained and held in the set position.

[0049] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A locking and limiting mechanism, comprising a drive unit (100) that is connected to and operable with a track box (300), the drive unit (100) being at least partially movable along the outside of the track box (300), and a locking unit (200) disposed on the side of the track box (300) corresponding to the drive unit (100), comprising a retracted state and an open state, wherein the movement of the drive unit (100) is restricted by the locking unit (200) in the retracted state, characterized in that: The drive unit (100) includes a swing arm (11), which moves along an operating plane. The free end of the swing arm (11) is provided with a hook part (12) extending into the inside of the track box (300). The drive unit (100) also includes a transmission plate (13), which includes a rotating shaft (131) movably connected to the track box (300). The swing arm (11) and the transmission plate (13) are fixedly connected and rotate along the axis of the rotating shaft (131). A positioning block (133) is formed on the transmission plate (13). A groove (32) suitable for the movement of the positioning block (133) is formed on the inner side of the track box (300). The groove (32) near the end The position is formed with a first protrusion (33) of the interference positioning block (133), and a support plate (37) is provided on the lower side of the swing arm (11). The support plate (37) is fixed outside the track box (300). The upper end face of the support plate (37) abuts against the swing arm (11). An arc-shaped ring wall (371) is formed on the periphery of the support plate (37), and a second protrusion (372) suitable for limiting the swing arm (11) is formed on the ring wall (371). The locking part (200) is operable to move relative to the operating plane. The locking part (200) includes a slider (21) and a fastening block (22) that are fixedly connected. The slider (21) is at least partially exposed in the track box (300). A slot (31) is provided on the outside of the track box (300). The outside of the track box (300) and the locking part (200) are connected through the slot (31). In the retracted state, the hook (12) engages with the latching block (22) via the slot (31). In the open state, the slider (21) moves vertically and causes the latching block (22) to disengage from the hook (12).

2. The locking and limiting mechanism as described in claim 1, characterized in that, The transmission plate (13) and the swing arm (11) are detachably connected. A fitting block (132) is formed on the transmission plate (13), and the swing arm (11) includes a mounting groove (111) that is adapted to the fitting block (132).

3. The locking and limiting mechanism as described in claim 2, characterized in that, The radial dimension of the insert block (132) decreases along its thickness direction, and the small end of the insert block (132) faces the mounting groove (111). The mounting groove (111) is provided with an anti-disengagement block (112) corresponding to the insert block (132).

4. The locking and limiting mechanism as described in claim 1, characterized in that, In the locking part (200), there are two sliders (21) respectively located on both sides of the fastening block (22), which cooperate with the fastening block (22) to form a slot (23). The slot (23) is suitable for the hook part (12) to move through. The fastening block (22) has a guide surface (221) on the side facing the swing arm (11).

5. The locking and limiting mechanism as described in claim 1, characterized in that, An elastic reset mechanism (24) is provided between the locking part (200) and the track box (300).

6. The locking and limiting mechanism as described in claim 1, characterized in that, The free end of the swing arm (11) is also fixedly provided with a handle (14), which extends outward from the track box (300).

7. The locking and limiting mechanism as described in claim 1, characterized in that, The latching block (22) has a minimum unlocking stroke. When the latching block (22) moves a distance greater than the minimum unlocking stroke in the open state, it can leave the hook part (12).

8. A track light comprising a locking and limiting mechanism as described in any one of claims 1-7, characterized in that, The power tap (310) of the track box (300) is installed between the double-sided guide rails (400). A conductive spring (35) is provided inside the track box (300). An opening is provided on the side of the track box (300) for the conductive spring (35) to extend and contact the guide rail (400). The track box (300) includes a mounting surface (320). The slider (21) passes through and protrudes from the mounting surface (320). During installation, the mounting surface (320) is attached to the bottom surface of the guide rail (400).

9. The track light as described in claim 8, characterized in that, The hook portion (12) includes an abutting surface (121) that engages with the snap-fit ​​block (22), and the height of the abutting surface (121) is less than the height of the slider (21) exposed on the mounting surface (320).

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