Weak current switch for track power supply

Abstract

The utility model relates to the technical field of lamp driving power supply, and disclose a kind of weak current switch of track power supply, including rotating seat, first conducting sheet, second conducting sheet and limit block being set on rotating seat, the first conducting sheet and second conducting sheet are in the shape of Chinese character '' and include horizontal extension power taking sheet that protrudes rotating seat and two stable bending arms being set in rotating seat and being respectively arranged on the upper and lower sides of extension power taking sheet, and the electrical connection member that protrudes rotating seat is formed on one stable bending arm.The weak current switch of the utility model is in the shape of Chinese character '' by the first conducting sheet and second conducting sheet, and the stability bending arm of upper and lower sides is specially designed, even if touching transverse groove line in the process of power taking, it can be dispersed by the lateral force of stability bending arm on the opposite side, keep the flat state of extension power taking sheet, thereby greatly improve the stability of electric connection with conducting metal strip, ensure the normal operation of track lamp signal control function.

Description

Technical Field

[0001] This utility model relates to the field of lighting driver power supply technology, and in particular to a low-voltage switch for track power supply. Background Technology

[0002] In the modern lighting field, track lights are widely used in commercial spaces, exhibition halls, and other venues due to their convenient installation and flexible positioning. Track lights typically consist of a driver power supply box (power converter) and a light body connected to the bottom of the driver power supply box. Their power supply relies on conductive metal strips on both sides inside the track. One part of the conductive metal strips is responsible for high-voltage power supply, while the other part is responsible for low-voltage power supply (such as 10V / 12V / 24V / 36V, etc., regardless of positive or negative or live / neutral voltage). The driver power supply box is equipped with corresponding high-voltage and low-voltage switches.

[0003] Existing low-voltage switches mainly consist of a rotating base, a conductive copper sheet mounted on the rotating base, and a limiting block. During track lighting installation, the driver power supply box can slide along the track to adjust its position. Once the position is determined, the rotating base of the low-voltage switch is rotated, causing the limiting block to rotate and engage with the track's grooved surface for fixation. Simultaneously, the conductive copper sheet contacts the conductive metal strip inside the track, enabling signal control and power supply to the track light. However, existing conductive copper sheets employ an L-shaped structure, including an extended power-collecting piece extending horizontally from the rotating base and a bent arm located within the rotating base. Because the conductive metal strip inside the track is separated by transverse grooves and deeply embedded in the groove between two transverse grooves, the extended power-collecting piece must extend into this groove to make electrical connection with the conductive metal strip. However, the narrow gap between the wire grooves results in the outer power-collecting sheet being only about 0.3mm thick. During the rotation and insertion into the wire groove, it is very easy for it to touch the transverse groove line. Furthermore, because the conductive copper sheet has a thin L-shaped structure, once the outer power-collecting sheet touches the transverse groove line, it is prone to unilateral bending deformation, either upward or downward, and cannot maintain a straight state. Ultimately, this prevents the conductive copper sheet from forming an effective electrical connection with the conductive metal strip, affecting the normal signal control function of the track light and reducing the reliability of the product and the user experience.

[0004] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a low-voltage switch for track power supply, which aims to ensure that the extended power-collecting plate and the conductive metal strip form an effective electrical connection.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A weak-current taking switch for an orbital power supply, comprising a rotating seat, a first conductive sheet, a second conductive sheet and a limiting block arranged on the rotating seat. The first conductive sheet and the second conductive sheet are in a "mountain" shape. Both the first conductive sheet and the second conductive sheet include an extension power-taking sheet horizontally extending out of the rotating seat and two stable bent arms arranged inside the rotating seat and respectively located on the upper and lower sides of the extension power-taking sheet. The stable bent arms are electrically connected to the outside through electrical connection components.

[0008] As a further improvement of the above technical solution, the rotating seat includes a main seat body and a side cover. There are two installation cavities arranged left and right inside the main seat body, and the two installation cavities are separated by a partition wall.

[0009] As a further improvement of the above technical solution, the stable bent arm includes a first inclined support sheet connected to one end of the extension power-taking sheet and a bent sheet connected to the first inclined support sheet. The bent sheet abuts against the partition wall.

[0010] As a further improvement of the above technical solution, the stable bent arm includes a second inclined support sheet connected to one end of the extension power-taking sheet and a vertical sheet connected to the second inclined support sheet. The electrical connection component is arranged between the partition wall and the stable bent arm, and the stable bent arm abuts against the electrical connection component.

[0011] As a further improvement of the above technical solution, a boss facing the electrical connection component is formed on the vertical sheet, and a limiting wall for guiding the vertical movement of the vertical sheet is arranged in the installation cavity.

[0012] As a further improvement of the above technical solution, protrusions are provided on both the upper and lower end faces of the extension power-taking sheet near the free end.

[0013] As a further improvement of the above technical solution, a plurality of first clamping blocks are arranged on the side wall of the main seat body, corresponding first buckling holes are opened on the side cover, and the main seat body and the side cover are connected through the first clamping blocks and the first buckling holes.

[0014] As a further improvement of the above technical solution, a limiting round head is provided on the top of the main seat body, a second buckling hole is opened on the limiting round head, and a second clamping block matching the second buckling hole is provided on the side cover.

[0015] As a further improvement of the above technical solution, a docking hole is provided on the main seat body, and a plug column matching the docking hole is provided on the side cover.

[0016] As a further improvement to the above technical solution, a square groove is provided at the bottom of the rotating seat. The beneficial effects of this utility model are as follows: Compared with the prior art, the low-voltage switch of this utility model, with its unique design of a "mountain"-shaped first and second conductive piece and stable curved arms on both sides, can maintain the straightness of the extended power-collecting piece even if it touches the transverse groove line during power collection, thanks to the dispersion of lateral forces by the stable curved arms. This greatly improves the stability of the electrical connection with the conductive metal strip, ensures the normal operation of the track light signal control function, avoids problems such as light flickering and control failure caused by unstable electrical connection, and significantly improves the reliability of the product. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure after removing the side cover of the first type of low-voltage switch.

[0018] Figure 2 This is a schematic diagram of the structure of the first type of conductive sheet.

[0019] Figure 3 This is a schematic diagram of the structure of the first type of second conductive sheet.

[0020] Figure 4 This is a schematic diagram of the structure after removing the side cover of the second type of low-voltage switch.

[0021] Figure 5 This is an exploded view of the second method of removing the low-voltage switch after removing the side cover.

[0022] Figure 6 The three-dimensional switch for low-voltage circuits provided by this utility model Figure 1 .

[0023] Figure 7 The three-dimensional switch for low-voltage circuits provided by this utility model Figure 2 .

[0024] Figure 8 After the power supply box is installed on the track, take a left view showing the low-voltage switch and the conductive metal strip connected to it.

[0025] Figure 9 This is a schematic diagram of the structure for installing a low-voltage switch inside the power supply box.

[0026] Explanation of main component symbols: 1-Rotating seat, 11-Main seat body, 12-Side cover, 13-Mounting cavity, 14-Partition wall, 15-First locking block, 16-First snap-fit ​​hole, 17-Limiting round head, 18-Second snap-fit ​​hole, 19-Second locking block, 101-Mating hole, 103-Square groove, 104-Partition wall, 2-First conductive sheet, 3-Second conductive sheet, 41-Extended power-taking sheet, 42-Stabilizing bent arm, 421-First diagonal brace, 422-Bending sheet, 423-Second diagonal brace, 424-Vertical sheet, 425-Boss, 43-Power-connecting component, 431-Vertical extension section, 44-Protrusion, 46-Extended protrusion, 5-Limiting block, 61-Positioning strip, 62-Elastic block, 7-Snap ring, 8-Railway, 81-Horizontal extension groove line, 82-Conductive metal strip, 83-Wire groove, 9-Power box. Detailed Implementation

[0027] This utility model provides a low-voltage switch for track power supply. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit the scope of protection of this utility model.

[0028] Please see Figures 1 to 9 This utility model provides a low-voltage switch for a track power supply, including a rotating base 1, a first conductive plate 2, a second conductive plate 3 and a limiting block 5 disposed on the rotating base 1. The first conductive plate 2 and the second conductive plate 3 are in the shape of a "mountain". Both the first conductive plate 2 and the second conductive plate 3 include an extended power-collecting plate 41 that extends horizontally out of the rotating base 1 and two stabilizing curved arms 42 disposed inside the rotating base 1 and respectively disposed on the upper and lower sides of the extended power-collecting plate. The stabilizing curved arms 42 are connected to the outside through a connecting member 43.

[0029] When using the low-voltage switch of this rail power supply, see Figure 6As shown, after the power supply box 9 slides along the track 8 to a suitable position, the rotating seat 1 is rotated, causing the limiting block 5 to rotate and engage within the track 8, thus fixing the low-voltage switch on the track 8. Simultaneously, the extended power-collecting pieces 41 of the first conductive piece 2 and the second conductive piece 3 move towards the conductive metal strip 82 deep within the internal groove 83 (between the two transverse groove lines 81) of the track 8. During the insertion into the groove 83, if the extended power-collecting piece 41 touches the transverse groove line 81, the stabilizing bent arms 42, located on the upper and lower sides of the extended power-collecting piece 41 respectively, form a triangular support and constraint structure, improving its structural rigidity. When the extended power-collecting piece 41 is subjected to lateral stress from the transverse groove line 81, the stabilizing curved arms 42 on the upper and lower sides can offset the lateral stress, preventing the extended power-collecting piece 41 from undergoing unilateral bending deformation upward or downward due to unilateral force, thereby maintaining the straight posture of the extended power-collecting piece 41, ensuring that it smoothly cuts into the groove 83, and achieves electrical connection with the conductive metal strip 82, so as to realize the stable conduction of the weak electrical signal of the track 8 light.

[0030] Unlike existing technologies where L-shaped conductive copper sheets are prone to deformation due to structural defects, making effective electrical connection impossible, this utility model's low-voltage switch, with its unique "mountain"-shaped first conductive sheet 2 and second conductive sheet 3, utilizes stable curved arms on both the upper and lower sides. Even if the transverse groove line is touched during power extraction, the stable curved arms disperse lateral forces, maintaining the straightness of the extended power extraction sheet. This significantly improves the stability of the electrical connection with the conductive metal strip 82, ensuring the normal operation of the track light signal control function and avoiding problems such as light flickering and control failure caused by unstable electrical connection, thus significantly improving product reliability.

[0031] In this embodiment, see Figure 6 and Figure 7 As shown, the rotating seat 1 includes a main body 11 and a side cover 12. The rotating seat 1 adopts a split structure of the main body 11 and the side cover 12. When installing the first conductive sheet 2, the second conductive sheet 3, and the limiting block 5, each component can be placed in the mounting cavity 13 of the main body 11 first, and then sealed and fixed by the side cover 12, simplifying the installation process. The main body 11 has two mounting cavities 13 arranged left and right, providing independent and stable mounting spaces for the first conductive sheet 2 and the second conductive sheet 3. The two mounting cavities 13 are separated by a partition wall 14, which can restrict the lateral movement of the conductive sheets in the mounting cavities 13, preventing the conductive sheets from colliding or shifting due to external forces.

[0032] In one implementation, see Figures 1 to 3As shown, each of the stabilizing arms 42 includes a first inclined support 421 connected to one end of the extended power-collecting piece 41 and a bent piece 422 connected to the first inclined support. The bent piece 422 abuts against the partition wall 14. This arrangement allows the external force experienced by the extended power-collecting piece 41 during its insertion into the wire groove 83 to be distributed and transmitted to the main body of the rotating seat 1 via the stabilizing arms 42. The bent piece 422 abuts against the partition wall 14, which provides a reverse support force, forming a stable triangular support structure. This mechanical design ensures that even if the extended power-collecting piece 41 encounters a large lateral force within the narrow wire groove 83, such as when it touches the transverse groove line 81, the stabilizing arms 42 can effectively resist deformation, ensuring that the extended power-collecting piece 41 remains straight and securely connects to the conductive metal strip 82, significantly improving the durability and connection reliability of the low-voltage switch.

[0033] The power connector is an external protrusion 46 integrally formed with one of the bent pieces 422. The external protrusion 46 is connected to the circuit board inside the track power supply to form a power supply.

[0034] In another embodiment, see Figure 4 and Figure 5 As shown, the stabilizing arm 42 includes a second inclined support 423 connected to one end of the extended power-collecting plate 41 and a vertical plate 424 connected to the second inclined support 423. Two connecting elements 43 are provided, both located between the partition wall 14 and the corresponding stabilizing arm 42. Both connecting elements 43 are three-dimensional sheet structures, differing slightly in shape due to differences in circuit conduction direction, but both function to conduct electricity. The connecting elements 43 and the stabilizing arm 42 are separately arranged, with the stabilizing arm 42 abutting against the vertical extension section 431 of the connecting element 43. When the stabilizing arm 42 is subjected to force, it can slide along the side of the connecting element 43, a characteristic that gives the structure an adaptive buffering capability. During the process of the extended power-collecting plate 41 extending into the wire groove, if it collides with the transverse groove line and generates a lateral force, the stabilizing arm 42 will not undergo rigid deformation due to rigid contact, but will instead convert the impact force into a controllable displacement through sliding along the side of the connecting element 43. During the sliding process, the triangular support structure formed by the second inclined brace 423 and the vertical piece 424 continues to play a role in dispersing external forces, ensuring that the extended power-taking piece 41 always remains straight, effectively resisting the risk of deformation, ensuring a stable electrical connection with the conductive metal strip, and significantly improving the reliability of the low-voltage switch under complex installation conditions.

[0035] Furthermore, a boss 425 facing the contact element is formed on the vertical piece 424, and a limiting wall 104 is provided in the mounting cavity 13 to guide the vertical movement of the vertical piece 424. The boss 425 on the vertical piece 424 is in close contact with the contact element 43, increasing the contact area between the stabilizing arm 42 and the contact element 43, forming a more stable support structure. When the epitaxial power-collecting piece 41 is subjected to lateral force, the boss 425 can evenly distribute the force to the contact element 43, avoiding structural damage caused by stress concentration. At the same time, the guiding effect of the limiting wall 104 on the vertical movement of the vertical piece 424 restricts the displacement of the stabilizing arm 42 in unexpected directions, ensuring that it can only slide along a predetermined path. This dual constraint mechanism significantly improves the deformation resistance of the stabilizing arm 42, allowing the epitaxial power-collecting piece to remain straight under complex working conditions, ensuring a reliable electrical connection with the conductive metal strip.

[0036] The specifications of different track products are not uniform, and there may be a height difference of about 1mm in the grooves of different track products. The extended power-collecting piece 41 is as thin as a blade, and when it is inserted deep into the groove 83, it is easy to get stuck once it encounters the transverse groove line 81. Even if you force it, it is difficult to move due to its thin and fragile structure. To address this, the upper and lower end faces of the extended power-collecting piece 41 are provided with protrusions 44 near the free end. The protrusions 44 can be smooth circular rivets. By reducing friction and optimizing the force distribution, damage to the power-collecting piece and the transverse groove line 81 due to excessive force is avoided. When jamming occurs, only a small external force needs to be applied to force it. The protrusions 44 significantly reduce friction through point contact, greatly reducing the resistance force originally caused by large-area friction. At this point, the protrusion 44 can help the extended power-collecting piece 41 easily overcome the jamming and smoothly slide into the depth of the wire groove 83 to connect with the conductive metal strip 82. On the one hand, it can effectively avoid installation failure caused by jamming and significantly improve the success rate of power collection connection; on the other hand, it can be adapted to more track products and improve the product competitiveness of the drive power box.

[0037] It should be noted that the shape of the protrusion 44 is not limited to a circle; it can also be an ellipse, a square, a rectangle, a dot, or any other protrusion shape.

[0038] Because the extended power-collecting piece 41 may get stuck during insertion into the wire groove 83 when its upper or lower end face comes into contact with the transverse groove line 81, a smooth, round protrusion 44 is provided on both the upper and lower end faces, forming a two-way protection mechanism. Regardless of whether the upper or lower end face of the extended power-collecting piece 41 first comes into contact with the transverse groove line 81 and gets stuck when it is inserted into the wire groove 83, the protrusion 44 can play a role in reducing friction and assisting in guidance. Through the coordinated work of the protrusions 44 in both directions, the probability of getting stuck is further reduced, ensuring that the extended power-collecting piece 41 can easily break through when encountering obstacles and successfully connect with the conductive metal strip 82. Compared with a protrusion 44 on only one side, this greatly improves the smoothness of the installation process and the overall installation success rate.

[0039] For ease of connection between the main body 11 and the side cover 12, see Figure 6 As shown, the main body 11 has multiple first locking blocks 15 on its side wall, and the side cover 12 has corresponding first fastening holes 16. The main body 11 and the side cover 12 are connected by the first locking blocks 15 and the first fastening holes 16. During installation, simply align the first fastening holes 16 of the side cover 12 with the first locking blocks 15 of the main body 11 and press gently to achieve quick assembly of the main body 11 and the side cover 12. This eliminates the need for tools such as screwdrivers and welding equipment, significantly shortening installation time and reducing the difficulty of installation operations. It is especially suitable for mass production scenarios on assembly lines, significantly improving production efficiency.

[0040] Furthermore, the top of the main body 11 is provided with a limiting round head 17, which cooperates with the inside of the power supply box 9 to achieve circumferential limiting, effectively restricting the movement of the rotating seat 1 in the circumferential direction. The limiting round head 17 is provided with a second fastening hole 18, and the side cover 12 is provided with a second locking block 19 that cooperates with the second fastening hole 18. The cooperation between the second fastening hole 18 and the second locking block 19 forms a stable connection structure, making the main body 11 and the side cover 12 more tightly connected.

[0041] See Figure 1 As shown, the main body 11 is provided with a docking hole 101, and the side cover 12 is provided with a post that mates with the docking hole 101. The post can be quickly and accurately inserted into the docking hole 101, effectively preventing misalignment or displacement of the main body 11 and the side cover 12 during installation, ensuring the accuracy of their installation positions. This not only ensures that internal components such as the first conductive sheet 2 and the second conductive sheet 3 are in the correct installation positions, but also, during the use of the track 8 light, when faced with external forces such as vibration and collision, this stable connection structure can effectively prevent the main body 11 and the side cover 12 from separating or loosening, thereby protecting the installation stability of internal components such as the conductive sheets, avoiding problems such as poor weak current connection and signal transmission interruption caused by loose connection, providing a reliable guarantee for the stable operation of the track 8 light, and extending the service life of the product.

[0042] To further improve the reliability of the rotating seat 1 and prevent the main seat 11 and the side cover 12 from separating during operation, the main seat 11 and the side cover 12 will be connected by ultrasonic welding.

[0043] Preferred, see Figure 7 As shown, the bottom of the rotating base 1 is provided with a square groove 103. A key matching the shape of the square groove 103 is inserted into the square groove 103, and then the rotating base 1 is rotated by rotating the key. After rotation, the key is removed. There is no protruding structure, which improves the flexibility of installation, improves the concealment of installation, and improves the aesthetics.

[0044] To improve the structural stability of the connection and locking state between the low-voltage switch and track 8, in this embodiment, see... Figure 7 As shown, a positioning strip 61 is provided on one side of the rotating base 1, and an elastic block 62 is movably abutted against one side of the positioning strip 61. The elastic block 62 is installed inside the power supply box 9. After the rotating base 1 drives the positioning strip 61 to rotate at a certain angle, one side of the positioning strip 61 abuts against the elastic block 62 to form a positioning, which improves the structural stability of the connection and locking state between the low-voltage switch and the track 8. When the rotating base 1 drives the positioning strip 61 to rotate in the opposite direction, the positioning strip 61 presses against the elastic block 62, and the elastic block 62 undergoes elastic deformation under force. After the positioning strip 61 rotates in the opposite direction at a certain angle, it disengages from the abutment with the elastic block 62.

[0045] A circuit board is installed inside the power supply box. When the rotating seat rotates into position, the connecting parts of the first conductive plate 2 and the second conductive plate 3 are electrically connected to the connecting terminals on the circuit board.

[0046] Preferred, see Figure 6 As shown, the bottom of the rotating base 1 has two horizontally spaced retaining rings 7. During installation, the retaining rings 7 can quickly and accurately engage with the mounting slots 91 inside the power supply box 9, effectively preventing the rotating base 1 from shifting or misaligning in the axial direction, and ensuring that the relative position of the rotating base 1 and the power supply box 9 remains fixed. This allows components such as the first conductive plate 2 and the second conductive plate 3 on the rotating base 1 to precisely align with the power supply box 9 and the conductive metal strip 82 inside the track 8, ensuring the accuracy of the weak current signal transmission path.

[0047] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0048] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0049] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A low-voltage switch for track power supply, characterized in that, It includes a rotating base, a first conductive plate, a second conductive plate and a limiting block disposed on the rotating base. The first conductive plate and the second conductive plate are in the shape of a "mountain". Both the first conductive plate and the second conductive plate include an extended power-collecting plate that extends horizontally out of the rotating base and two stabilizing curved arms disposed inside the rotating base and respectively on the upper and lower sides of the extended power-collecting plate. The stabilizing curved arms are connected to the outside through a connecting component.

2. The low-voltage switch for track power supply according to claim 1, characterized in that, The rotating seat includes a main body and a side cover. The main body has two mounting cavities arranged to the left and right, and the two mounting cavities are separated by a partition wall.

3. The low-voltage switch for track power supply according to claim 2, characterized in that, The stabilizing arm includes a first inclined support plate connected to one end of the extended power-collecting plate and a bent plate connected to the first inclined support plate, the bent plate abutting against the partition wall.

4. The low-voltage switch for track power supply according to claim 2, characterized in that, The stabilizing arm includes a second inclined support plate connected to one end of the extended power-collecting plate and a vertical plate connected to the second inclined support plate. The power-connecting component is disposed between the partition wall and the stabilizing arm, and the stabilizing arm abuts against the power-connecting component.

5. The low-voltage switch for track power supply according to claim 4, characterized in that, The vertical plate has a protrusion facing the electrical connector, and the mounting cavity is provided with a limiting wall to guide the vertical movement of the vertical plate.

6. The low-voltage switch for track power supply according to any one of claims 1-5, characterized in that, The upper and lower end faces of the epitaxial power-collecting sheet both have protrusions near the free end.

7. The low-voltage switch for track power supply according to claim 2, characterized in that, The main body has multiple first locking blocks on its side wall, and the side cover has corresponding first fastening holes. The main body and the side cover are connected by the first locking blocks and the first fastening holes.

8. The low-voltage switch for the track power supply according to claim 7, characterized in that, The top of the main body is provided with a limiting round head, and a second fastening hole is provided on the limiting round head. The side cover is provided with a second locking block that cooperates with the second fastening hole.

9. The low-voltage switch for the track power supply according to claim 2, characterized in that, The main body is provided with a docking hole, and the side cover is provided with a plug that mates with the docking hole.

10. The low-voltage switch for the track power supply according to claim 1, characterized in that, The bottom of the rotating seat is provided with a square groove.

Images