A fast connecting device and method for a lamp pole of a lamp

Abstract

This invention discloses a quick-connect device and method for lighting poles, comprising a female lamp post assembly and a male lamp post assembly. The female lamp post assembly includes a first lamp post and a female connector. The female connector has a through hole and two locking blocks and two slots on its inner wall. The male lamp post assembly can be inserted into the female lamp post assembly and includes a second lamp post, a male connector, a latch, a spring, and a nut. The left end of the male connector has a screw, and the latch is axially slidably mounted on the right end of the screw. The nut is screwed to the left end of the screw, and the spring is installed between the nut and the latch. The latch has two hook-shaped protrusions corresponding to the locking blocks. After the hook-shaped protrusions are inserted into the female connector from the slot, they rotate by a set angle and, under the elastic action of the spring, hook onto the inner end of the corresponding locking block. This invention enables quick, easy, and reliable connection between lamp posts, with a small rotation angle during the connection process and minimal impact on the wiring connections within the lamp post.

Description

Technical Field

[0001] This invention relates to the field of lighting fixtures and lamp posts, and particularly to a quick-connect device and method for lighting fixtures and lamp posts. Background Technology

[0002] A lamp post is the supporting component and wiring component of a lamp. Depending on the specific needs, lamp posts are often assembled from multiple post sections. See Chinese patent document CN211424190U, which discloses a lamp post mounting method comprising a first upright and a second upright, with the top of the first upright rotatably connected to the bottom of the second upright, and the connection point secured by multiple bolts. This type of lamp post requires multiple bolts to connect the two uprights, making the connection process very cumbersome, and since only the ends of the two uprights are joined together, its stability is insufficient.

[0003] Referring to Chinese patent document CN212361947U, a modular lamp post connection structure is disclosed, including a first lamp post, a second lamp post, a male connector, and a female connector. The lower part of the male connector is embedded in the port of the first lamp post; that is, an external thread is formed on the outer wall of the lower part of the male connector, and an internal thread is formed on the inner wall of the port of the first lamp post to mesh with the external thread. The connection between the male connector and the first lamp post is achieved through the meshing of the internal and external threads. The upper part of the female connector is embedded in the port of the second lamp post; that is, an external thread is formed on the outer wall of the upper part of the female connector, and an internal thread is formed on the inner wall of the port of the second lamp post to mesh with the external thread. The connection between the female connector and the second lamp post is achieved through the meshing of the internal and external threads.

[0004] The patent CN212361947U can improve the connection stability between the male connector and the first lamp post, and improve the connection stability between the female connector and the second lamp post. However, the technical problems of the patent CN212361947U are: (1) The connection and installation are complicated. During the connection and installation process, the male connector needs to be screwed to the first lamp post and the female connector needs to be screwed to the second lamp post at the same time. The connection and installation speed is slow and the connection and installation are complicated; (2) The screw connection method makes it necessary for the first lamp post and the second lamp post to be rotated a lot to be screwed securely. However, since the lamp post usually has the function of a conductor, the lamp post is equipped with wires. When the first lamp post and the second lamp post are rotated many times to connect, the wires inside the lamp post are easily twisted together, or even twisted into a twisted shape, causing poor wire connection. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to address the shortcomings of the prior art by providing a quick-connect device for lamps and lamp poles. This quick-connect device enables the connection between lamp poles to be quick, easy to operate, and secure and reliable. The connection process between lamp poles involves a small rotation angle and has little impact on the wiring connections inside the lamp poles. At the same time, the present invention also provides a quick-connection method for the quick-connect device for lamps and lamp poles.

[0006] To solve the above-mentioned technical problems, the first technical solution of the present invention is: a quick-connect device for lamps and lamp poles, comprising: A female lamp post assembly includes a first lamp post and a female connector. The female connector is connected to the right end of the first lamp post. The end of the female connector is provided with a first cut-off surface. The female connector has a female connector through hole inside. The inner wall of the female connector through hole is provided with two snap-fit ​​blocks and two slots. The snap-fit ​​blocks are protruding, and the slots are located between the two snap-fit ​​blocks. A male light pole assembly, which can be inserted into a female light pole assembly, includes a second light pole, a male connector, a latch, a spring, and a nut. The male connector is connected to the left end of the second light pole, and the right end of the male connector has a second stop surface that abuts against a first stop surface. The left end of the male connector has a screw, and the latch is axially slidably mounted on the right end of the screw. The nut is screwed to the left end of the screw, and the spring is movably fitted outside the screw, with the left end of the spring in elastic contact with the nut and the right end of the spring in elastic contact with the latch. The latch has two hook-shaped protrusions corresponding to the snap-fit ​​blocks. The hook-shaped protrusions can be inserted into the female connector from the slot, rotated by a set angle, and hooked onto the inner end of the corresponding snap-fit ​​block under the elastic action of the spring.

[0007] Preferably, the female connector's snap-fit ​​block sidewall is sequentially provided with a first stop surface, a chamfered surface, a sliding surface, and a first latching surface. The first stop surface is parallel to the female connector's axis and is also defined as the slot wall of the slot. The sliding surface is located on the inner end face of the snap-fit ​​block and is perpendicular to the first stop surface. The chamfered surface is located at the connection between the sliding surface and the first stop surface. The first latching surface is perpendicular to the sliding surface. The hook-shaped boss of the latch sequentially includes a guide slope, a second latching surface, a connecting surface, and a second stop surface. The guide slope is located on the right side of the hook-shaped boss and slides and guides the chamfered surface. The second latching surface is connected to the guide slope and is parallel to the screw's axis. The second latching surface latches and engages with the first latching surface. The connecting surface is perpendicular to the second latching surface, and the connecting surface corresponds to the sliding surface. The second stop surface is perpendicular to the connecting surface and engages with the first stop surface.

[0008] Preferably, the cross-sectional shape of the slot of the female connector is fan-shaped, and the left end face of the hook-shaped boss of the latch is also fan-shaped, and the size of the slot matches the size of the hook-shaped boss.

[0009] Preferably, the two snap-fit ​​blocks of the female connector are identical in shape and positioned opposite each other, and the two hook-shaped protrusions of the latch are identical in shape and positioned opposite each other.

[0010] Preferably, the screw has a chamfered edge on its side, and a third cut-off surface is provided at the right end of the chamfered edge. The latch has a chamfered hole, and the latch is installed on the right end of the screw through the chamfered hole. The right end of the latch abuts against the third cut-off surface.

[0011] Preferably, the first lamp post is a metal lamp post with a wire hole inside, and the cross-sectional shape of the first lamp post is circular, square, rectangular or irregular; the female connector is a metal female connector, and the left end of the female connector is welded to the right end of the first lamp post.

[0012] Preferably, the second lamp post is a metal lamp post with a wire hole inside, and the cross-sectional shape of the second lamp post is circular, square, rectangular, or irregular; the male connector is a metal male connector, the right end of which is welded to the left end of the second lamp post, and the male connector has a wire hole inside; the latch is a metal latch, the spring is a metal spring, and the nut is a metal nut.

[0013] To solve the above-mentioned technical problems, the second technical solution of the present invention is: the insertion method of the quick-connect device for lamps and lamp poles includes the following steps: S1. Align the right end of the female lamp post assembly with the left end of the male lamp post assembly, and insert the nut, screw and spring of the male lamp post assembly to the left into the female connector through hole of the female connector; S2. Continue pushing the male lamp post assembly to the left. When the latch reaches the position of the female connector, let the two hook-shaped protrusions of the latch insert into the corresponding slots respectively. Stop pushing when the second cut-off surface of the male connector and the first cut-off surface of the female connector come into contact. S3. Rotate the male lamp post assembly, and the hook-shaped protrusion of the latch engages with the inner end of the female connector's locking block; during the process of the hook-shaped protrusion engaging with the inner end of the locking block, the inner end of the locking block first applies a reaction force to the right end of the hook-shaped protrusion, forcing the latch to move to the left and compress the spring, and then the spring pushes the latch back to the right and hooks the inner end of the locking block.

[0014] Preferably, step S3 specifically includes the following steps: (1) Rotate the public light pole assembly clockwise, and the latch will rotate along with the entire public light pole assembly; (2) The guide slope of the hook-shaped boss of the latch passes through the chamfered surface of the snap-fit ​​block of the female connector. During this process, the chamfered surface of the snap-fit ​​block forces the hook-shaped boss to move to the left, thereby forcing the latch to move to the left and compressing the spring. (3) Continue to rotate the lamp post assembly. The connection between the guide slope of the hook-shaped boss and the second snap-fit ​​surface slides onto the sliding surface of the snap-fit ​​block, and then slides on the sliding surface. (4) Continue to rotate the lamp post assembly until the second stop surface of the hook-shaped boss contacts the first stop surface of the locking block and then stop rotating; during this process, the second snap-fit ​​surface of the hook-shaped boss snaps into the first snap-fit ​​surface of the locking block, the spring pushes the lock to the right and rebounds, and the second snap-fit ​​surface of the hook-shaped boss snaps onto one side of the first snap-fit ​​surface of the locking block.

[0015] The beneficial effects of this invention are as follows: First, this invention only requires inserting the male lamp post assembly into the female lamp post assembly and then rotating it by a set angle to allow the hook-shaped protrusion of the male connector's latch to engage with the inner end of the female connector's locking block, achieving a quick connection between the first and second lamp posts with simple operation; Second, after inserting the male lamp post assembly into the female lamp post assembly, this invention ensures that the spring continuously provides elastic force to the latch, allowing the hook-shaped protrusion of the latch to always firmly engage with the inner end of the female connector's locking block, making it secure, reliable, and not easily loosened. Simultaneously, the male lamp post assembly is secured by the female connector assembly... The overall enclosure ensures a very secure connection between the male lamp post assembly and the female connector assembly. Thirdly, after inserting the male lamp post assembly into the female lamp post assembly, this invention only requires a predetermined angle rotation to engage the hook-shaped protrusion of the male connector's latch with the inner end of the female connector's locking block. This predetermined angle is necessarily smaller than the angle between the two sides of the locking block and the axis of the female connector. Therefore, the male lamp post assembly of this invention has a small rotation angle, which has minimal impact on the wiring connections within the lamp post, avoiding the problem of wires twisting together due to multiple rotations in existing technologies. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the connection process between the female and male light pole assemblies.

[0017] Figure 2 This is a structural diagram showing the connection between the female and male light pole assemblies.

[0018] Figure 3 This is a diagram showing the distributed structure of the main lamp post assembly.

[0019] Figure 4 This is a structural diagram of the main lamp post assembly and a longitudinal sectional view of the main connector.

[0020] Figure 5 This is a diagram showing the distributed structure of the public light pole assembly.

[0021] Figure 6This is an overall structural diagram of the public light pole assembly and an enlarged view of the latch. Detailed Implementation

[0022] The structural and working principles of the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] like Figures 1-6 As shown, the present invention is a quick-connect device for lamp posts, including a female lamp post assembly 1 and a male lamp post assembly 2. The female lamp post assembly 1 includes a first lamp post 11 and a female connector 12. The female connector 12 is connected to the right end of the first lamp post 11. The end of the female connector 12 is provided with a first cut-off surface 121. The female connector 12 has a female connector through hole 122. The inner wall of the female connector through hole 122 is provided with two locking blocks 123 and two slots 124. The locking blocks 123 are protruding, and the slots 124 are located between the two locking blocks 123. The male lamp post assembly 2 can be inserted into the female lamp post assembly 1. The male lamp post assembly 2 includes a second lamp post 21, a male connector 22, a latch 23, a spring 24, and a nut 25. The male connector 22 is connected to the left end of the second lamp post 21. The male connector 22 has a second stop surface 221 at its right end, which abuts against the first stop surface 121. The male connector 22 has a screw 222 at its left end, and the latch 23 is axially slidably mounted on the right end of the screw 222. The nut 25 is screwed to the left end of the screw 222, and the spring 24 is movably fitted outside the screw 222. The left end of the spring 24 is in elastic contact with the nut 25, and the right end of the spring 24 is in elastic contact with the latch 23. The latch 23 has two hook-shaped protrusions 231 corresponding to the snap-fit ​​block 123. The hook-shaped protrusions 231 can be inserted into the female connector 12 from the slot 124, rotated by a set angle, and hooked onto the inner end of the corresponding snap-fit ​​block 123 under the elastic action of the spring 24.

[0024] like Figures 1-6As shown, the side wall of the snap-fit ​​block 123 of the female connector 12 is provided with a first stop surface 1231, a chamfered surface 1232, a sliding surface 1233, and a first latching surface 1234 in sequence. The first stop surface 1231 is parallel to the axis of the female connector 12 and is also defined as the groove wall of the slot 124. The sliding surface 1233 is located on the inner end face of the snap-fit ​​block 123 and is perpendicular to the first stop surface 1231. The chamfered surface 1232 is provided at the connection between the sliding surface 1233 and the first stop surface 1231. The first latching surface 1234 is perpendicular to the sliding surface 1233. The hook-shaped protrusion 231 of the latch 23 includes a guide slope 2311, a second... The device comprises a snap-fit ​​surface 2312, a connecting surface 2313, and a second stop surface 2314. The guide slope 2311 is located to the right of the hook-shaped boss 231 and slides in a guiding engagement with the chamfered surface 1232. The second snap-fit ​​surface 2312 is connected to the guide slope 2311 and is parallel to the axis of the screw 222. The second snap-fit ​​surface 2312 snaps in a snap-fit ​​engagement with the first snap-fit ​​surface 1234. The connecting surface 2313 is perpendicular to the second snap-fit ​​surface 2312 and corresponds to the position of the sliding surface 1233. The second stop surface 2314 is perpendicular to the connecting surface 2313 and stops in a stop engagement with the first stop surface 1231.

[0025] like Figures 1-6 As shown, the cross-sectional shape of the slot 124 of the female connector 12 is fan-shaped, and the left end face of the hook-shaped protrusion 231 of the latch 23 is also fan-shaped. The size of the slot 124 matches the size of the hook-shaped protrusion 231, and the central angle of the fan-shaped protrusion is approximately 90 degrees. The two snap-fit ​​blocks 123 of the female connector 12 are identical in shape and opposite in position, and the two hook-shaped protrusions 231 of the latch 23 are identical in shape and opposite in position.

[0026] like Figure 2 , Figure 5 and Figure 6 As shown, the screw 222 has a chamfered edge 2221 on its side, and a third stop surface 2222 at the right end of the chamfered edge 2221. The latch 23 has a chamfered hole 232, and the latch 23 is installed on the right end of the screw 222 through the chamfered hole 232. The right end of the latch 23 abuts against the third stop surface 2222. The chamfered edge 2221 and the chamfered hole 232 prevent the latch 23 from rotating independently, but only with the screw as a whole. The third stop surface 2222 restricts the position of the right end of the latch 23.

[0027] like Figures 1-6As shown, the first lamp post 11 is a metal lamp post with a wire hole 111 inside. The cross-sectional shape of the first lamp post 11 is circular, square, rectangular, or irregular, preferably circular. The female connector 12 is a metal female connector 12, and its left end is welded to the right end of the first lamp post 11. The second lamp post 21 is a metal lamp post with a wire hole 211 inside. The cross-sectional shape of the second lamp post 21 is circular, square, rectangular, or irregular, preferably circular. The male connector 22 is a metal male connector 22, and its right end is welded to the left end of the second lamp post 21. The male connector 22 has a wire hole 223 inside. The latch 23 is a metal latch 23, the spring 24 is a metal spring 24, and the nut 25 is a metal nut 25.

[0028] like Figure 1 As shown, in conjunction with reference Figures 2-6 The insertion method for quick-connect devices for lighting fixtures and poles includes the following steps: S1. Align the right end of the female lamp post assembly with the left end of the male lamp post assembly, and insert the nut 25, screw 222 and spring 24 of the male lamp post assembly to the left into the through hole of the female connector 12 of the female connector 12. S2. Continue to push the male lamp post assembly to the left. When the latch 23 reaches the position of the female connector 12, let the two hook-shaped protrusions 231 of the latch 23 insert into the corresponding slots 124 respectively, until the second cut-off surface of the male connector 22 and the first cut-off surface of the female connector 12 come into contact and then stop pushing. S3. Rotate the male lamp post assembly, and the hook-shaped protrusion 231 of the latch 23 engages with the inner end of the locking block 123 of the female connector 12. During the process of engaging with the inner end of the locking block 123, the hook-shaped protrusion 231 first applies a reaction force from the inner end of the locking block 123 to the right end of the hook-shaped protrusion 231, forcing the latch 23 to move to the left and compress the spring 24. Then, the spring 24 pushes the latch 23 to the right to rebound and hook the inner end of the locking block 123.

[0029] Step S3 specifically includes the following steps: (1) Rotate the public light pole assembly clockwise, and the latch 23 will rotate along with the entire public light pole assembly; (2) The guide slope 2311 of the hook-shaped boss 231 of the latch 23 passes through the chamfered surface 1232 of the snap-fit ​​block 123 of the female connector 12. During this process, the chamfered surface 1232 of the snap-fit ​​block 123 forces the hook-shaped boss 231 to move to the left, and forces the latch 23 to move to the left and compress the spring 24; (3) Continue to rotate the male lamp post assembly, and the connection between the guide slope 2311 of the hook-shaped boss 231 and the second snap-fit ​​surface 2312 slides onto the sliding surface 1233 of the snap-fit ​​block 123, and then slides on the sliding surface 1233; (4) Continue to rotate the male lamp post assembly until the second stop surface 2314 of the hook-shaped boss 231 contacts the first stop surface 1231 of the locking block 123 and then stop rotating. During this process, the second latching surface 2312 of the hook-shaped boss 231 engages with the first latching surface 1234 of the locking block 123, and the spring 24 pushes the lock 23 back to the right. The second latching surface 2312 of the hook-shaped boss 231 is latched on one side of the first latching surface 1234 of the locking block 123. At this time, since the second latching surface 2312 and the first latching surface 1234 of the female lamp post assembly 1 form a latching relationship, the lamp post can be effectively reversed and disengaged.

[0030] This invention allows for quick and easy connection between the first lamp post 11 and the second lamp post 21 simply by inserting the male lamp post assembly 2 into the female lamp post assembly 1 and rotating it by a set angle. The hook-shaped protrusion 231 of the male connector 22's latch 23 engages with the inner end of the female connector 12's locking block 123. After inserting the male lamp post assembly 2 into the female lamp post assembly 1, the spring 24 continuously provides elastic force to the latch 23, ensuring that the hook-shaped protrusion 231 of the latch 23 firmly and reliably engages with the inner end of the female connector 12's locking block 123, preventing it from easily coming loose. Simultaneously, the male lamp post assembly 2 is completely enclosed by the female connector assembly 1, ensuring a very secure connection between the two components. The invention is robust. After inserting the male lamp post assembly 2 into the female lamp post assembly 1, it only needs to rotate by a set angle to allow the hook-shaped protrusion 232 of the locking buckle 23 of the male connector 22 to hook onto the inner end of the snap-fit ​​block 123 of the female connector 12. Since the first stop surface 1231, the chamfered surface 1232, the sliding surface 1233, and the first snap-fit ​​surface 1234 are all located on one side of the snap-fit ​​block 123, the set angle must be smaller than the angle between the two sides of the snap-fit ​​block 123 and the axis of the female connector. It can be seen that the male lamp post assembly 2 of the present invention has a small rotation angle, which has little impact on the connection of the wires (not shown in the figure) inside the lamp post, and can avoid the problem of wires twisting together due to multiple rotations in the prior art.

[0031] The above description is merely a preferred embodiment of the present invention. Any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical solution of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. A quick-connect device for lighting fixtures and poles, characterized in that, include: A female lamp post assembly includes a first lamp post and a female connector. The female connector is connected to the right end of the first lamp post. The end of the female connector is provided with a first cut-off surface. The female connector has a female connector through hole inside. The inner wall of the female connector through hole is provided with two snap-fit ​​blocks and two slots. The snap-fit ​​blocks are protruding, and the slots are located between the two snap-fit ​​blocks. A male light pole assembly, which can be inserted into a female light pole assembly, includes a second light pole, a male connector, a latch, a spring, and a nut. The male connector is connected to the left end of the second light pole, and the right end of the male connector has a second stop surface that abuts against a first stop surface. The left end of the male connector has a screw, and the latch is axially slidably mounted on the right end of the screw. The nut is screwed to the left end of the screw, and the spring is movably fitted outside the screw, with the left end of the spring in elastic contact with the nut and the right end of the spring in elastic contact with the latch. The latch has two hook-shaped protrusions corresponding to the snap-fit ​​blocks. The hook-shaped protrusions can be inserted into the female connector from the slot, rotated by a set angle, and hooked onto the inner end of the corresponding snap-fit ​​block under the elastic action of the spring. The screw has a chamfered edge on its side, and a third cut-off surface at the right end of the chamfered edge. The latch has a chamfered hole, and the latch is installed on the right end of the screw through the chamfered hole. The right end of the latch abuts against the third cut-off surface.

2. The quick-connect device for lamps and lamp posts according to claim 1, characterized in that: The female connector's snap-fit ​​block sidewall is sequentially provided with a first stop surface, a chamfered surface, a sliding surface, and a first snap-fit ​​surface. The first stop surface is parallel to the female connector's axis and is also defined as the slot wall of the slot. The sliding surface is located on the inner end face of the snap-fit ​​block and is perpendicular to the first stop surface. The chamfered surface is located at the connection between the sliding surface and the first stop surface. The first snap-fit ​​surface is perpendicular to the sliding surface. The hook-shaped boss of the latch sequentially includes a guide slope, a second snap-fit ​​surface, a connecting surface, and a second stop surface. The guide slope is located on the right side of the hook-shaped boss and slides and guides the chamfered surface. The second snap-fit ​​surface is connected to the guide slope and is parallel to the screw's axis. The second snap-fit ​​surface snaps into the first snap-fit ​​surface. The connecting surface is perpendicular to the second snap-fit ​​surface, and the connecting surface corresponds to the sliding surface. The second stop surface is perpendicular to the connecting surface and stops the first stop surface.

3. The quick-connect device for lamps and lamp posts according to claim 2, characterized in that: The female connector's slot has a fan-shaped cross-section, and the left end face of the hook-shaped boss of the latch also has a fan-shaped shape. The size of the slot matches the size of the hook-shaped boss.

4. The quick-connect device for lamps and lamp posts according to claim 2, characterized in that: The two snap-fit ​​blocks of the female connector are identical in shape and positioned opposite each other, and the two hook-shaped protrusions of the latch are identical in shape and positioned opposite each other.

5. The quick-connect device for lamps and lamp posts according to claim 1, characterized in that: The first lamp post is a metal lamp post with a wire hole inside. The cross-sectional shape of the first lamp post is circular, square, rectangular, or irregular. The female connector is a metal female connector, and the left end of the female connector is welded to the right end of the first lamp post.

6. The quick-connect device for lamps and lamp posts according to claim 1, characterized in that: The second lamp post is a metal lamp post with a wire hole inside. The cross-sectional shape of the second lamp post is circular, square, rectangular, or irregular. The male connector is a metal male connector with its right end welded to the left end of the second lamp post. The male connector has a wire hole inside. The latch is a metal latch, the spring is a metal spring, and the nut is a metal nut.

7. The quick-connect method of the quick-connect device for lamps and lamp poles according to any one of claims 1-6, characterized in that, Includes the following steps: S1. Align the right end of the female lamp post assembly with the left end of the male lamp post assembly, and insert the nut, screw and spring of the male lamp post assembly to the left into the female connector through hole of the female connector; S2. Continue pushing the male lamp post assembly to the left. When the latch reaches the position of the female connector, let the two hook-shaped protrusions of the latch insert into the corresponding slots respectively. Stop pushing when the second cut-off surface of the male connector and the first cut-off surface of the female connector come into contact. S3. Rotate the male lamp post assembly, and the hook-shaped protrusion of the latch engages with the inner end of the female connector's locking block; during the process of the hook-shaped protrusion engaging with the inner end of the locking block, the inner end of the locking block first applies a reaction force to the right end of the hook-shaped protrusion, forcing the latch to move to the left and compress the spring, and then the spring pushes the latch back to the right and hooks the inner end of the locking block.

8. The quick-connect method of the quick-connect device for lamps and lamp poles according to any one of claims 2-4, characterized in that, Includes the following steps: S1. Align the right end of the female lamp post assembly with the left end of the male lamp post assembly, and insert the nut, screw and spring of the male lamp post assembly to the left into the female connector through hole of the female connector; S2. Continue pushing the male lamp post assembly to the left. When the latch reaches the position of the female connector, let the two hook-shaped protrusions of the latch insert into the corresponding slots respectively. Stop pushing when the second cut-off surface of the male connector and the first cut-off surface of the female connector come into contact. S3. Rotate the male lamp post assembly, and the hook-shaped protrusion of the latch engages with the inner end of the female connector's locking block; during the process of the hook-shaped protrusion engaging with the inner end of the locking block, the inner end of the locking block first applies a reaction force to the right end of the hook-shaped protrusion, forcing the latch to move to the left and compress the spring, and then the spring pushes the latch back to the right and hooks the inner end of the locking block. Step S3 specifically includes the following steps: (1) Rotate the public light pole assembly clockwise, and the latch will rotate along with the entire public light pole assembly; (2) The guide slope of the hook-shaped boss of the latch passes through the chamfered surface of the snap-fit ​​block of the female connector. During this process, the chamfered surface of the snap-fit ​​block forces the hook-shaped boss to move to the left, thereby forcing the latch to move to the left and compressing the spring. (3) Continue to rotate the lamp post assembly. The connection between the guide slope of the hook-shaped boss and the second snap-fit ​​surface slides onto the sliding surface of the snap-fit ​​block, and then slides on the sliding surface. (4) Continue to rotate the lamp post assembly until the second stop surface of the hook-shaped boss contacts the first stop surface of the locking block and then stop rotating; during this process, the second snap-fit ​​surface of the hook-shaped boss snaps into the first snap-fit ​​surface of the locking block, the spring pushes the lock to the right and rebounds, and the second snap-fit ​​surface of the hook-shaped boss snaps onto one side of the first snap-fit ​​surface of the locking block.

Images