Low-voltage output connector and light string controller

Abstract

A low-voltage output connector and a light string controller are disclosed, the light string controller comprises a housing, an input interface arranged at the front end of the housing and a low-voltage output connector arranged at the rear end of the housing, and the first output connector comprises a rear cover, an output interface and a nut in threaded fit with the output interface; the output interface comprises a threaded column and a boss arranged at the root of the threaded column, one side of the boss is provided with a first inclined surface, and the other side of the boss is provided with a first stop surface; the nut is in threaded connection with the threaded column, a plurality of clamping teeth are arranged at the end of the nut, a second inclined face is arranged on the side, facing screwing, of each clamping tooth, and a second stopping face is arranged on the side, facing unscrewing, of each clamping tooth. The problem that a connector at the output end of a traditional controller is prone to loosening is solved.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a low-voltage output connector used in a light string controller. Background Technology

[0002] A transformer power supply is a device that transforms the input voltage through a transformer circuit before outputting the output voltage. This type of power supply is widely used in string lights. Currently, string lights generally require direct current (DC), while the mains power output is alternating current (AC). Therefore, a transformer power supply is needed between the string lights and the mains power. For example, Chinese Patent Publication No. CN204696941U describes a transformer power supply with both AC and DC outputs, including a housing and a back cover. The back cover is located at one end of the housing; an input interface is located at the other end of the housing; the back cover has at least one DC output interface and at least one AC output interface; the input interface has threads on its outer periphery; the DC output interface has threads on its outer periphery; and the AC output interface has threads on its outer periphery. Under vibration or external force, the nuts in this type of transformer power supply are prone to loosening, leading to poor electrical contact and even short circuits. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a low-voltage output connector and a string light controller, which solves the problem of easy loosening of the output connector of traditional controllers.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a low-voltage output connector, including a back cover, an output interface on the back cover, and a nut threadedly engaged with the output interface; the output interface includes a threaded post integrally injection molded with the back cover and a boss at the root of the threaded post, the outer wall of the threaded post has external threads, the threaded post has a connecting seat inside, the connecting seat has a socket, one side of the boss has a first inclined surface, and the other side has a first stop surface; the inner wall of the nut has internal threads, the nut is threadedly connected to the threaded post, the end of the nut has several locking teeth that engage with the boss, the locking teeth have a second inclined surface facing the tightened side, and the locking teeth have a second stop surface facing the loosened side. The principle of this utility model: insert the light string wire into the socket of the low-voltage output connector and tighten the nut; after the nut is fully tightened, the first and second inclined surfaces work together to guide the locking teeth of the nut over the boss; when the nut is rotated in the opposite direction, the first and second stop surfaces interlock to prevent the nut from loosening.

[0005] As an improvement, the inner side of the back cover is provided with reinforcing ribs, and the inner side edge of the back cover is provided with ultrasonic welding grooves.

[0006] As an improvement, a total of four evenly distributed protrusions are provided.

[0007] To solve the above-mentioned technical problems, another technical solution of this utility model is: a string light controller, including a housing, an input interface at the front end of the housing, and a low-voltage output connector at the rear end of the housing. The first output connector includes a rear cover, an output interface on the rear cover, and a nut that is threadedly engaged with the output interface. The output interface includes a threaded post integrally injection molded with the rear cover and a boss at the root of the threaded post. The outer wall of the threaded post is provided with external threads, and a connecting seat is provided inside the threaded post. The connecting seat is provided with a insertion hole. One side of the boss is provided with a first inclined surface, and the other side is provided with a first stop surface. The inner wall of the nut is provided with internal threads, and the nut is threadedly connected to the threaded post. The end of the nut is provided with several retaining teeth. The retaining teeth are provided with a second inclined surface facing the tightened side, and the retaining teeth are provided with a second stop surface facing the loosened side. The principle of this utility model is as follows: Insert the light string wire into the socket of the low-voltage output connector and tighten the nut; after the nut is tightened to the bottom, the first inclined surface and the second inclined surface work together to guide the locking teeth of the nut over the boss; when the nut is rotated in the opposite direction, the first stop surface and the second stop surface interlock to prevent the nut from loosening.

[0008] As an improvement, the inner side of the back cover is provided with reinforcing ribs, and the inner side edge of the back cover is provided with ultrasonic welding grooves.

[0009] As an improvement, a total of four evenly distributed protrusions are provided.

[0010] As an improvement, the shell is formed by ultrasonic welding of an upper shell and a lower shell, with two ultrasonic welding lines provided between the upper shell and the lower shell.

[0011] The beneficial effects of this utility model compared with the prior art are:

[0012] The bosses and locking teeth work together, and the inclined guide and stop surface interlock design effectively prevents the nut from loosening; the bosses are evenly distributed and can serve as both an interlocking structure and a reinforcing rib design to improve mechanical strength and service life; the ultrasonic welding groove and double welding line design ensure the sealing of the housing and connector. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the present invention.

[0014] Figure 2 This is an exploded view of the present invention, Figure I.

[0015] Figure 3 This is exploded view II of the present invention.

[0016] Figure 4 This is a schematic diagram of the back cover.

[0017] Figure 5 This is a schematic diagram of a nut. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] like Figures 1 to 5 As shown, a string light controller includes a housing, an input interface at the front end of the housing, and a low-voltage output connector at the rear end of the housing. The housing is formed by ultrasonic welding of an upper shell and a lower shell, with two ultrasonic welding lines between the upper and lower shells to improve the overall waterproof performance of the housing. The first output connector includes a rear cover 1, an output interface on the rear cover 1, and a nut 2 that threadedly engages with the output interface. The output interface is located on the outer side of the rear cover 1, and the inner side of the rear cover 1 has reinforcing ribs 6. The inner edge of the rear cover 1 has ultrasonic welding grooves 5. The rear end of the housing is aligned with the ultrasonic welding grooves and then ultrasonically welded, connecting the rear cover 1 and the housing into a single unit, thus improving the overall waterproof performance of the controller. The output interface includes a threaded post 3 integrally injection molded with the back cover 1 and a boss 4 located at the root of the threaded post 3. In this embodiment, a total of four bosses 4 are evenly distributed around the circumference. The inner surface of the boss 4 is connected to the threaded post 3, and the bottom surface of the boss 4 is connected to the back cover 1. The boss 4 can serve as a reinforcing structure between the threaded post 3 and the back cover 1. The outer wall of the threaded post 3 is provided with external threads, and the threaded post 3 is provided with a connecting seat 8. The connecting seat 8 is provided with a socket 7 for the insertion of a conductor. One side of the boss 4 is provided with a first inclined surface 41, and the other side is provided with a first stop surface 42. The inner wall of the nut 2 is provided with internal threads, and the nut 2 is threadedly connected to the threaded post 3; the end of the nut 2 is provided with a plurality of retaining teeth 21, the retaining teeth 21 are provided with a second inclined surface 211 facing the tightened side, and the retaining teeth 21 are provided with a second stop surface 212 facing the loosened side, the first inclined surface 41 cooperates with the second inclined surface 211, and the first stop surface 42 cooperates with the second stop surface 212.

[0020] The principle of this utility model is as follows: Insert the light string wire into the socket of the low-voltage output connector and tighten the nut 2; after the nut 2 is tightened to the bottom, the first inclined surface 41 and the second inclined surface 211 work together to guide the locking teeth 21 of the nut 2 over the boss 4; when the nut 2 is rotated in the opposite direction, the first stop surface 42 and the second stop surface 212 interlock to prevent the nut 2 from loosening.

Claims

1. A low pressure output coupling comprising a back cover, an output interface provided on the back cover, and a nut cap threadedly engaged with the output interface; characterized in that: The output interface comprises a threaded column integrally injection molded with the back cover and a boss arranged at the root of the threaded column, an outer wall of the threaded column is provided with external threads, a connecting seat is arranged in the threaded column, a plug hole is arranged on the connecting seat, one side of the boss is provided with a first inclined surface, and the other side is provided with a first stop surface; an inner wall of the nut is provided with internal threads, the nut is threadedly connected with the threaded column, a plurality of clamping teeth matched with the boss are arranged at the end of the nut, a second inclined surface is arranged on the side of the clamping teeth facing the tightening, and a second stop surface is arranged on the side of the clamping teeth facing the loosening.

2. A low pressure output coupling as claimed in claim 1, wherein: The inner side of the back cover is provided with a reinforcing rib, and the edge of the inner side of the back cover is provided with an ultrasonic welding groove.

3. A low pressure output coupling as claimed in claim 1, wherein: There are four circumferentially uniformly distributed bosses in total.

4. A light string controller comprising a housing, an input interface disposed at a front end of the housing, and a low voltage output coupler disposed at a rear end of the housing, the first output coupler comprising a rear cap, an output interface disposed on the rear cap, and a nut threaded to the output interface; characterized by: The output interface comprises a threaded column integrally injection molded with the back cover and a boss arranged at the root of the threaded column, an outer wall of the threaded column is provided with external threads, a connecting seat is arranged in the threaded column, a plug hole is arranged on the connecting seat, one side of the boss is provided with a first inclined surface, and the other side is provided with a first stop surface; an inner wall of the nut is provided with internal threads, the nut is threadedly connected with the threaded column, a plurality of clamping teeth matched with the boss are arranged at the end of the nut, a second inclined surface is arranged on the side of the clamping teeth facing the tightening, and a second stop surface is arranged on the side of the clamping teeth facing the loosening.

5. A string controller according to claim 4, characterised in that: The inner side of the back cover is provided with a reinforcing rib, and the edge of the inner side of the back cover is provided with an ultrasonic welding groove.

6. A string controller according to claim 4, characterized in that: There are four circumferentially uniformly distributed bosses in total.

7. A string controller according to claim 4, characterized in that: The shell is formed by ultrasonic welding of the upper shell and the lower shell, and two ultrasonic welding lines are arranged between the upper shell and the lower shell.

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