A junction box for a luminaire

Abstract

The utility model relates to the technical field of lamps and lanterns related accessories discloses a junction box for lamps and lanterns, including box body, be provided with terminal row and with control circuit board of terminal row electric connection in the box body, the box body includes upper cover and base, one end of upper cover is connected with base rotation through pivot, the other end top of upper cover is provided with at least one slot, one side of slot top is provided with first buckle piece, the other side is provided with reinforcing rib, be provided with at least one vertical upward second buckle piece on base, the base passes through second buckle piece and is connected with upper cover with the interlocking of slot, one side of second buckle piece and first buckle piece lock catch cooperation, the other side and reinforcing rib abut. The utility model provides a junction box and is connected through the cooperation of first buckle piece and reinforcing rib two and second buckle piece, improves the connection stability of junction box.

Description

Technical Field

[0001] This application relates to the technical field of lighting fixture accessories, and in particular to a junction box for lighting fixtures. Background Technology

[0002] In the field of lighting-related accessories technology, junction boxes are an important component. Their technological development has a critical impact on the normal use and safety performance of lighting fixtures. As the lighting industry progresses, the requirements for the functionality and stability of junction boxes are increasing. A well-designed junction box can improve the compatibility and reliability of lighting systems and promote the development of the lighting industry.

[0003] In existing technologies, the common approach to solving the connection problem between components of a junction box is to install snap-fit ​​structures on different components. Connections are achieved through the insertion and engagement of these snap-fits. To ensure smooth insertion, pre-drilled holes are often provided in the structure to allow for the necessary displacement during insertion. However, once inserted, the presence of these holes results in insufficient rigid support around the structure. Under significant external pulling forces or vibrations, the snap-fits are prone to elastic rebound or lateral displacement, leading to loosening or even detachment. This connection method not only presents unreliable issues but also further affects the normal use of the product, potentially causing safety risks such as lamp falls or poor electrical contact, reducing product stability and user experience.

[0004] Therefore, developing a junction box to solve the technical problem of unstable connection in existing technologies has become an important issue that urgently needs to be addressed. Utility Model Content

[0005] To address the issue of unstable connections in existing junction boxes and improve their safety, this application provides a junction box for lighting fixtures.

[0006] A junction box for lighting fixtures includes a box body, a terminal block and a control circuit board electrically connected to the terminal block are disposed inside the box body, the box body includes a top cover and a base, one end of the top cover is rotatably connected to the base via a pivot, and the other end of the top cover is provided with at least one slot, a first latching member is provided on one side of the top of the slot, and a reinforcing rib is provided on the other side, the base is provided with at least one vertically upward second latching member, the base is engaged with the top cover through the slot via the second latching member, one side of the second latching member engages with the first latching member, and the other side abuts against the reinforcing rib.

[0007] By adopting the above technical solution, the top cover and base of the junction box can achieve a stable connection. On the one hand, the top cover and base are connected by a rotating shaft, which facilitates opening and closing. On the other hand, the first latch on one side of the slot on the top cover engages with the second latch on the base, and the reinforcing rib on the other side abuts against the second latch. This structural design makes the two latch tightly connected. When subjected to large external pulling force or vibration impact, the reinforcing rib can further support the second latch, preventing its elastic rebound or lateral displacement, avoiding loosening or even falling off, ensuring the normal use of the junction box, reducing safety risks such as lamp falling and poor electrical contact caused by unreliable connection, and improving product stability and user experience.

[0008] Furthermore, the reinforcing rib is an L-shaped structure with an opening facing downwards. The reinforcing rib includes a connecting part and an abutting part facing the first fastener. The connecting part is connected to one side of the top of the slot, and the abutting part is used to abut against the second fastener.

[0009] By adopting the above technical solution, the downward-facing L-shaped structure allows the second latch to slide smoothly into the slot. When the second latch is in place, the abutting part of the reinforcing rib abuts against the second latch from one side, preventing it from being accidentally displaced or loosened due to external force. This enhances the stability of the connection between the top cover and the base, and improves the reliability and stability of the overall structure of the junction box.

[0010] Furthermore, the first buckle is provided with a locking hook, and the corresponding side wall of the second buckle is provided with at least one slot that engages with the locking hook.

[0011] By adopting the above technical solution, the locking hook of the first buckle and the snap-fit ​​of the second buckle can be engaged to achieve a firm connection between the top cover and the base, preventing the junction box from separating due to external force during use, improving the stability and reliability of the junction box structure, reducing safety risks such as lamp falling and poor electrical contact, and enhancing product stability and user experience.

[0012] Furthermore, the terminal block is connected to a power cord, and the upper cover has at least one half-groove on the side away from the rotating shaft. When the upper cover is fastened to the base, the half-groove and the corresponding structure on the base together form a wire hole for the power cord to pass through.

[0013] By adopting the above technical solution, the wire hole allows the power cord to pass through the junction box easily, avoiding the power cord being squeezed or damaged during the junction box closing process, and ensuring the connection stability between the power cord and the terminal block inside the junction box.

[0014] Furthermore, the outer wall of the base is provided with a toggle switch, the terminal block includes a ground terminal, a common neutral terminal and at least two controlled live wire terminals, the control circuit board includes a signal input terminal and at least two control output terminals, the control output terminals of the control circuit board are electrically connected to the controlled live wire terminals one by one, the toggle switch is electrically connected to the signal input terminal of the control circuit board and is used to send a switching command to the control circuit board, and the control circuit board controls the on / off state of the corresponding control output terminal according to the switching command.

[0015] Specifically, the controlled fire wire terminal is provided in three parts.

[0016] By adopting the above technical solution, a toggle switch is installed on the outer wall of the junction box base, which is used in conjunction with the control circuit board and terminal block. The operator can send a switching command to the control circuit board by toggling the toggle switch. The control circuit board controls the on / off state of the corresponding control output terminal according to the command, thereby controlling the controlled live wire terminal. This enables independent selection and flexible control of different lamps or lamp groups, further enhancing system compatibility and meeting more different lamp grouping and dimming needs.

[0017] Furthermore, the base has multiple positioning posts on its inner bottom wall, and the terminal block has positioning holes that cooperate with the positioning posts. The terminal block is sleeved on the positioning posts through the positioning holes.

[0018] By adopting the above technical solution, a positioning post is set on the bottom wall of the base and cooperates with the positioning hole on the terminal block. This allows the terminal block to be accurately fitted onto the positioning post, achieving precise positioning and stable installation of the terminal block in the junction box. This prevents the terminal block from shaking or shifting during use, ensuring the stability of the internal structure of the junction box and the reliability of the electrical connection.

[0019] Furthermore, the bottom wall of the base is provided with a mounting platform for supporting the control circuit board. A first mounting plate is provided on the mounting platform, and a first mounting hole is opened on the first mounting plate. A second mounting plate is fixed on the top of the control circuit board, and a second mounting hole is opened on the second mounting plate. A threaded sleeve that cooperates with a screw is fixedly provided on the mounting platform. The screw passes through the first mounting hole and the second mounting hole in sequence and is screwed into the threaded sleeve to fix the control circuit board.

[0020] By adopting the above technical solution, using the first mounting plate on the mounting platform and the second mounting plate on the top of the control circuit board, along with the screw and threaded sleeve, the control circuit board can be stably installed, ensuring the stability of the circuit board in the junction box, avoiding loose connections or malfunctions caused by the circuit board shaking or vibration, and improving the reliability and stability of the electrical connections in the junction box.

[0021] In summary, this application includes at least the following beneficial technical effects: (1) The junction box provided by this utility model uses an L-shaped reinforcing rib to guide the insertion of the second fastener and prevent it from falling off in the reverse direction. With the cooperation of the reinforcing rib and the first fastener, the second fastener is more stable in the slot, preventing the second fastener from falling off due to external force, thereby enhancing the stability of the connection between the top cover and the base and improving the reliability and safety of the overall structure of the junction box.

[0022] (2) The junction box provided by this utility model has a switching switch. The operator can send a switching command to the control circuit board by toggling the switching switch. The control circuit board controls the on / off state of the corresponding control output terminal according to the command, so as to realize the control of different controlled live wire terminals, thereby realizing the independent selection and flexible control of different lamps or lamp groups, further enhancing system compatibility and meeting the different usage needs of lamps. Attached Figure Description

[0023] Figure 1 This is a first structural schematic diagram of a junction box for a lamp provided in an embodiment of the present utility model; Figure 2 This is a schematic diagram of the second structure of a junction box for a lamp provided in an embodiment of the present utility model; Figure 3 This is an exploded view of a junction box for a lighting fixture provided in an embodiment of this utility model; Figure 4 This is an enlarged view of structure A of a junction box for a lamp provided in an embodiment of this utility model; Figure 5 This is a schematic diagram of the structure of a base for a junction box for a lamp provided in an embodiment of the present utility model; Figure 6 This is a third structural schematic diagram of a junction box for a lamp provided in an embodiment of the present utility model; Figure 7 This is a schematic diagram of the structure of a terminal block for a junction box used in a lighting fixture, provided as an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures: 1. Box body; 11. Top cover; 111. Rotating shaft; 112. Slot; 113. First fastener; 1131. Locking hook; 114. Reinforcing rib; 1141. Connecting part; 1142. Abutting part; 115. Half groove; 12. Base; 121. Second fastener; 1211. Bayonet; 122. Positioning post; 123. Mounting platform; 1231. Threaded sleeve; 124. First mounting plate; 1241. First mounting hole; 13. Wire passage hole; 2. Terminal block; 21. Positioning hole; 22. Ground terminal; 23. Common neutral terminal; 24. First controlled live wire terminal; 25. Second controlled live wire terminal; 26. Third controlled live wire terminal; 3. Control circuit board; 31. Second mounting plate; 311. Second mounting hole; 4. Power cord; 5. Screw; 6. Changeover switch. Detailed Implementation

[0025] The following combination Figure 1-7 The technical solutions in the embodiments of this utility model will be described in detail.

[0026] See Figure 1-3 This utility model provides a junction box for lighting fixtures, including a box body 1, a terminal block 2 and a control circuit board 3 electrically connected to the terminal block 2 inside the box body 1, a power cord 4 connected to the terminal block 2, and the box body 1 including a top cover 11 and a base 12.

[0027] One end of the top cover 11 is rotatably connected to the base 12 via a pivot 111. The top of the other end of the top cover 11 is provided with at least one slot 112. A first latch 113 is provided on one side of the top of the slot 112, and a reinforcing rib 114 is provided on the other side. At least one vertically upward second latch 121 is provided on the base 12. The base 12 is engaged with the top cover 11 by the second latch 121 passing through the slot 112. One side of the second latch 121 engages with the first latch 113, and the other side abuts against the reinforcing rib 114, thereby achieving a stable connection between the top cover 11 and the base 12.

[0028] Specifically, see Figure 4 The reinforcing rib 114 is an L-shaped structure with the opening facing downward. The reinforcing rib 114 includes a connecting part 1141 and an abutting part 1142 facing the first fastener 113. The connecting part 1141 is connected to one side of the top of the slot 112. The abutting part 1142 is used to abut against the second fastener 121. The first fastener 113 is provided with a locking hook 1131. The corresponding side wall of the second fastener 121 is provided with at least one slot 1211 that engages with the locking hook 1131.

[0029] To improve the connection stability between the top cover 11 and the base 12, two slots 112 are symmetrically arranged on the top of the end of the top cover 11 away from the pivot 111. Similarly, two second latching pieces 121 are provided on the base 12 for passing through the slots 112. The second latching pieces 121 are engaged with the first latching piece on one side of the slot 112, and the other side is abutted by the reinforcing rib 114.

[0030] Continue reading Figure 3 The upper cover 11 has at least one semi-groove 115 on the side away from the pivot. In this embodiment, there are two semi-grooves 115. When the upper cover 11 is fastened to the base 12, the semi-grooves 115 and the corresponding structure on the base 12 together form a wire hole 13 for the power cord 4 to pass through. To improve the stability of terminal block 2 and control circuit board 3 within housing 1, refer to... Figure 3 and Figure 5 The base 12 has multiple positioning posts 122 and a mounting platform 123 for supporting the control circuit board 3 on its inner bottom wall. The terminal block 2 has positioning holes 21 that cooperate with the positioning posts 122. The terminal block 2 is sleeved on the positioning posts 122 through the positioning holes 21. The mounting platform 123 is provided with a first mounting plate 124, which has a first mounting hole 1241. The top of the control circuit board 3 is fixed with a second mounting plate 31, which has a second mounting hole 311. The mounting platform 123 is fixed with a threaded sleeve 1231 that cooperates with the screw 5. The screw 5 passes through the first mounting hole 1241 and the second mounting hole 311 in sequence and is screwed into the threaded sleeve 1231 to fix the control circuit board 3 in the mounting platform 123.

[0031] See Figure 6-7 The outer wall of the base 12 is provided with a toggle switch 6. In this embodiment, the terminal block 2 includes a ground terminal 22, a common neutral terminal 23 and three controlled live wire terminals. The three controlled live wire terminals include a first controlled live wire terminal 24, a second controlled live wire terminal 25 and a third controlled live wire terminal 26. The control circuit board 3 includes a signal input terminal and three control output terminals. The three control output terminals of the control circuit board 3 are electrically connected to the three controlled live wire terminals one by one. The toggle switch 6 is electrically connected to the signal input terminal of the control circuit board 3.

[0032] During operation, the operator flips the switch 6 to generate a switching command. After receiving the command, the control circuit board 3 controls the corresponding control output terminal to be turned on or off, thereby realizing independent control of the lamps connected to the corresponding controlled live wire terminal.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A junction box for lighting fixtures, characterized in that: The device includes a housing, within which a terminal block and a control circuit board electrically connected to the terminal block are disposed. The housing includes a top cover and a base. One end of the top cover is rotatably connected to the base via a pivot. The top of the other end of the top cover has at least one slot. A first latching element is disposed on one side of the top of the slot, and a reinforcing rib is disposed on the other side. At least one vertically upward second latching element is disposed on the base. The base is engaged with the top cover by passing through the slot via the second latching element. One side of the second latching element engages with the first latching element, and the other side abuts against the reinforcing rib.

2. A junction box for lighting fixtures according to claim 1, characterized in that: The reinforcing rib is an L-shaped structure with the opening facing downwards. The reinforcing rib includes a connecting part and an abutting part facing the first fastener. The connecting part is connected to one side of the top of the slot, and the abutting part is used to abut against the second fastener.

3. A junction box for lighting fixtures according to claim 2, characterized in that: The first fastener is provided with a locking hook, and the corresponding side wall of the second fastener is provided with at least one slot that engages with the locking hook.

4. A junction box for lighting fixtures according to claim 1, characterized in that: The terminal block is connected to a power cord. The top cover has at least one half-groove on the side away from the rotating shaft. When the top cover is fastened to the base, the half-groove and the corresponding structure on the base together form a wire hole for the power cord to pass through.

5. A junction box for lighting fixtures according to claim 1, characterized in that: The outer wall of the base is provided with a toggle switch. The terminal block includes a ground terminal, a common neutral terminal, and at least two controlled live wire terminals. The control circuit board includes a signal input terminal and at least two control output terminals. The control output terminals of the control circuit board are electrically connected to the controlled live wire terminals one by one. The toggle switch is electrically connected to the signal input terminal of the control circuit board and is used to send a switching command to the control circuit board. The control circuit board controls the on / off state of the corresponding control output terminal according to the switching command.

6. A junction box for a lighting fixture according to claim 5, characterized in that: The controlled fire wire terminal is provided in three parts.

7. A junction box for lighting fixtures according to claim 1, characterized in that: The base has multiple positioning posts on its inner bottom wall, and the terminal block has positioning holes that mate with the positioning posts. The terminal block is fitted onto the positioning posts through the positioning holes.

8. A junction box for lighting fixtures according to claim 1, characterized in that: The base has a mounting platform on its bottom wall for supporting the control circuit board. A first mounting plate is provided on the mounting platform, and a first mounting hole is provided on the first mounting plate. A second mounting plate is fixed on the top of the control circuit board, and a second mounting hole is provided on the second mounting plate. A threaded sleeve that mates with a screw is fixed on the mounting platform. The screw passes through the first mounting hole and the second mounting hole in sequence and is screwed into the threaded sleeve to fix the control circuit board.

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