Decorative lighting and power connector thereof

Abstract

The utility model discloses a power supply connector, which comprises a shell, a circuit board and a head cover, the front end of the shell is provided with a first opening communicated with the inner cavity of the shell, the circuit board is arranged in the inner cavity of the shell, and the head cover covers the first opening and is connected with the shell. The head cover is in the shape of a cylinder protruding forwards, and the outer side face of the head cover is provided with an external thread spirally extending in the axial direction of the head cover so as to be matched with a connector, provided with an internal thread, of the screw lamp holder. Compared with the prior art, the power supply connector can be directly connected with the screw lamp holder, for the decorative lighting needing to be suspended for use, the power connection complexity can be remarkably reduced by adopting the power supply connector, and the power supply connector can be directly fixed and connected with a ceiling without an additional hanging device, so that the overall structure of the decorative lighting is simplified, and the cost is reduced. And the appearance is more concise and beautiful. The utility model further discloses the decorative lighting which comprises the power connector, and the decorative lighting is convenient to power on and operate when used in a suspended mode.

Description

Technical Field

[0001] This utility model relates to the field of electrical components technology, and in particular to a lamp and its power connector. Background Technology

[0002] Most lighting fixtures on the market currently use standard plug-in power connectors. These connectors have two prongs, one for connecting the live wire and the other for connecting the neutral wire. They are typically paired with common two-prong power outlets.

[0003] Although plug-in power connectors are widely used, they actually bring some inconveniences for lighting fixtures that need to be suspended: First, two-hole sockets are usually located at a low position, which makes it difficult to connect the lighting fixtures to the power supply; second, plug-in power connectors only provide power supply and cannot fix or connect the lighting fixtures, so the lighting fixtures need additional hanging devices, which not only complicates the overall structure of the lighting fixtures but also affects their aesthetics.

[0004] Therefore, there is an urgent need to design a new power connector to overcome the problems encountered by lighting fixtures in the above scenarios. Utility Model Content

[0005] The primary objective of this invention is to provide a power connector that is mainly used in lighting fixtures and can be directly connected to screw-type lamp holders.

[0006] To achieve the above objectives, the power connector provided by this utility model includes a housing, a circuit board, and a cover. The front end of the housing is provided with a first opening communicating with its inner cavity. The circuit board is placed in the inner cavity of the housing, and the cover seals the first opening and is connected to the housing.

[0007] The head cover is a forward-protruding cylindrical shape, and its outer surface is provided with an external thread that extends spirally along its axis to accommodate the screw-in lamp holder with an internal thread interface.

[0008] The housing is an insulator. The head cover includes a first part, a second part, and a third part. The first part and the third part are conductors, one of which is used to connect to the live wire of the power supply, and the other is used to connect to the neutral wire of the power supply. The second part is an insulator and separates the first part and the third part. The circuit board is electrically connected to the first part and the third part respectively through a first wire passing through the first opening.

[0009] Based on the above structure, this power connector can be directly connected to a screw-type lamp holder. Since screw-type lamp holders are typically installed on indoor ceilings, this power connector significantly reduces the complexity of wiring and improves ease of operation for light fixtures that need to be suspended. Furthermore, due to the high stability of threaded connections, relatively lightweight light fixtures can be directly fixed and connected to the ceiling via this power connector without the need for additional hanging devices. This not only simplifies the overall structure of the light fixture but also makes its appearance more concise and aesthetically pleasing.

[0010] Furthermore, the first part is cylindrical, and its rear opening serves as the cover opening. The second and third parts are both located at the front opening of the first part. The second part is annular, with its outer edge connected to the edge of the front opening of the first part. The third part is located inside the second part, and its outer edge connects to the inner edge of the second part. The first part is connected to the housing, and the external thread is located on the outer surface of the first part.

[0011] The advantage of this design is that there are no specific restrictions on the starting and ending positions of the screw-in lamp holder interface of the head cover. As long as it is fully screwed in, the first part and the third part can be connected to the power supply, which improves the ease of use of the power connector.

[0012] Furthermore, the second part is a ring-shaped cone structure with a smaller front end and a larger rear end, so that the third part protrudes forward from the first part. This is to prevent the third part from not contacting the corresponding structure of the screw-in lamp holder after the head cover is screwed into place, thus affecting the conduction with the power supply. On the other hand, it is to prevent the first part and the third part from being too close together, which could easily cause a short circuit.

[0013] Optionally, the housing is made of plastic, the first and third parts are made of metal, and the second part is made of ceramic.

[0014] Furthermore, the housing includes a protruding nozzle at its front, the opening of which is the first opening, and the head cover is screwed onto the protruding nozzle. In this way, the protruding nozzle acts as an internal support for the head cover, improving its strength and resistance to deformation, thereby ensuring a secure connection with the screw-in lamp holder interface. In addition, the threaded connection between the head cover and the protruding nozzle facilitates the production and assembly of this power connector.

[0015] Furthermore, the power connector also includes a tail cap, and the rear end of the housing has a second opening communicating with its inner cavity. The tail cap covers the second opening and is connected to the housing.

[0016] Furthermore, the tail cover includes a wiring terminal, the wiring terminal has a through wiring hole, and a second wire is led out from the circuit board, with the end of the second wire away from the circuit board passing through the wiring hole.

[0017] To ensure good waterproofing, the power connector features a special sealing design.

[0018] Furthermore, the second wire is fixedly connected to the tail cap by waterproof adhesive, and the waterproof adhesive seals the wiring hole.

[0019] Furthermore, a waterproof sealing ring or waterproof adhesive is provided between the head cover and the protruding mouth.

[0020] Furthermore, the tail cap is connected to the housing by an ultrasonic welding process.

[0021] In some embodiments, the housing has a groove around the edge of the second opening, the tail cap is submerged in the groove, and the front end face of the tail cap is in contact with the bottom surface of the groove.

[0022] In some embodiments, the housing includes a first inner step surface located around its rear end face and a first outer step surface located around the first inner step surface, the rear end face of the housing protruding rearward from the first inner step surface, and the first inner step surface protruding rearward from the first outer step surface.

[0023] The tail cap includes a second inner step surface located at the edge of its front end face and a second outer step surface located around the second inner step surface. The second outer step surface protrudes forward from the second inner step surface, and the second inner step surface protrudes forward from the front end face of the tail cap.

[0024] The rear end face of the housing is in contact with the front end face of the tail cap, the first inner step surface is in contact with the second inner step surface, and the first outer step surface is in contact with the second outer step surface.

[0025] Furthermore, the tail cap includes a protrusion on its front end face, the protrusion extending into the inner cavity of the housing from the second opening, and the outer sidewall of the protrusion abutting against the inner sidewall of the housing.

[0026] Another objective of this invention is to provide a lighting fixture that includes the aforementioned power connector. Thanks to this power connector, which can be directly connected to a screw-type lamp holder, the lighting fixture is convenient to connect to power when suspended, easy to operate, and can be fixed and connected to the ceiling without additional hanging devices. Compared to existing similar products, it has a simpler and more aesthetically pleasing appearance.

[0027] Compared with the prior art, the advantages of the lamp and its power connector provided by this utility model are as follows:

[0028] First, this power connector can directly connect to screw-in lamp holders, significantly reducing the complexity of wiring when the light fixture is suspended. It also eliminates the need for additional hanging devices, simplifying the overall structure and making the light fixture more aesthetically pleasing. Second, connecting the power connector to the screw-in lamp holder is convenient; simply screw the cap into the interface and tighten it completely. There are no specific starting or ending points. Furthermore, this power connector uses ultrasonic welding and features a specially designed waterproof sealing structure, giving it a high level of water resistance, reaching an immersion level. Attached Figure Description

[0029] Figure 1 This is an overall schematic diagram of the power connector in Embodiment 1 of this utility model;

[0030] Figure 2 This is a schematic diagram of the power connector in Embodiment 1 of this utility model.

[0031] Figure 3 This is a schematic diagram of the overall structure of the head cover in Embodiment 1 of this utility model;

[0032] Figure 4 This is an overall schematic diagram of the shell in Embodiment 1 of this utility model;

[0033] Figure 5 This is one of the overall schematic diagrams of the tail cap in Embodiment 1 of this utility model;

[0034] Figure 6 This is the second overall schematic diagram of the tail cap in Embodiment 1 of this utility model;

[0035] Figure 7 This is a schematic diagram showing the connection between the shell and the tail cap in Embodiment 1 of this utility model;

[0036] Figure 8 This is one of the split schematic diagrams of the power connector in Embodiment 2 of this utility model;

[0037] Figure 9 This is the second schematic diagram of the split design of the power connector in Embodiment 2 of this utility model;

[0038] Figure 10 This is a schematic diagram of the connection between the shell and the tail cap in Embodiment 2 of this utility model.

[0039] In the diagram: 1. Shell; 11. Protruding nozzle; 12. First inner step surface; 13. First outer step surface; 101. First opening; 102. Second opening; 103. Sink; 2. Head cover; 21. First part; 22. Second part; 23. Third part; 201. External thread; 3. Tail cover; 31. Protruding strip; 32. Second inner step surface; 33. Second outer step surface; 34. Terminal block; 341. Wiring hole; 4. Circuit board; 5. First wire; 6. Second wire. Detailed Implementation

[0040] The present invention will now be described in more detail with reference to specific embodiments. Those skilled in the art should understand that these descriptions merely list some specific embodiments of the present invention and do not limit the scope of the present invention or its protection in any way.

[0041] To facilitate the description of the positional relationship between one component and another shown in the accompanying drawings, spatial relative terms such as "front," "rear," "front part," "rear part," "front end," and "rear end" will be used herein. It is understood that the spatial relative terms are intended to cover different orientations in use and operation of embodiments other than those depicted in the drawings. For example, if the device in the drawings is reversed, a component described as being "front-end" of other components is reoriented to be "rear-end" of those components. Specifically, in this invention, the power connector is connected to the appliance via a power cord; therefore, the direction of the power connector away from the appliance along the power cord can be defined as "front," and the direction closer to the appliance as "rear."

[0042] Furthermore, terms such as "first" and "second" in this document are not intended to emphasize the quantity, order, or importance of the components referred to. Unless otherwise stated, terms such as "installed," "connected," and "linked" in this document should be interpreted broadly. For example, they can refer to fixed connections, integral connections, or detachable connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art should understand the specific meaning of the above terms in this document according to the specific circumstances. In addition, terms such as "greater than," "less than," and "exceeding" in this document are understood to exclude the stated number; terms such as "above," "below," and "within" are understood to include the stated number. "Several" means one or more, and "multiple" means two or more.

[0043] Example 1

[0044] See Figure 1 and Figure 2 This embodiment provides a power connector, which includes a housing 1, a circuit board 4 and a cover 2. The front end of the housing 1 is provided with a first opening 101 that communicates with its inner cavity. The circuit board 4 is placed in the inner cavity of the housing 1. The cover 2 covers the first opening 101 and is connected to the housing 1.

[0045] like Figure 2 and Figure 3 As shown, the head cover 2 is a forward-protruding cylindrical shape, and its outer surface is provided with an external thread 201 that extends spirally along its axis to adapt to the screw-type lamp holder with an internal thread interface. When the power connector is connected to the screw-type lamp holder, the head cover 2 is in front and screwed into the interface of the screw-type lamp holder, while the housing 1 is behind and exposed outside the interface of the screw-type lamp holder.

[0046] Shell 1 is an insulator. For example... Figure 3 As shown, the head cover 2 includes a first part 21, a second part 22, and a third part 23. The first part 21 and the third part 23 are conductors, one of which is used to connect to the live wire of the power supply, and the other is used to connect to the neutral wire of the power supply. The second part 22 is an insulator and separates the first part 21 and the third part 23. The circuit board 4 is electrically connected to the first part 21 and the third part 23 respectively through a first wire 5 passing through the first opening 101.

[0047] Specifically, in this embodiment, the first wire 5 is set as two wires. One end of one wire is connected to the circuit board 4 and the other end is connected to the first part 21. One end of the other wire is also connected to the circuit board 4 and the other end is connected to the third part 23.

[0048] Based on the above structure, this power connector can be directly connected to a screw-type lamp holder. Since screw-type lamp holders are typically installed on indoor ceilings, this power connector significantly reduces the complexity of wiring and improves ease of operation for light fixtures that need to be suspended. Furthermore, due to the high stability of threaded connections, relatively lightweight light fixtures can be directly fixed and connected to the ceiling via this power connector without the need for additional hanging devices. This not only simplifies the overall structure of the light fixture but also makes its appearance more concise and aesthetically pleasing.

[0049] The specific structure of head cover 2 will be described below.

[0050] See Figure 2 and Figure 3 The first part 21 is the main body of the head cover 2, which is located at the rear of the head cover 2. It is generally cylindrical, and the opening at the rear end is the cover opening of the head cover 2. The external thread 201 is provided on its outer side. The first part 21 is connected to the shell 1.

[0051] Both the second part 22 and the third part 23 are located at the front opening of the first part 21, belonging to the front of the head cover 2. The second part 22 is annular, and its outer edge is connected to the edge of the front opening of the first part 21. The third part 23 is plate-shaped, located inside the second part 22, and its outer edge is connected to the inner edge of the second part 22.

[0052] The advantage of the above design is that there are no specific restrictions on the starting and ending positions of the screw-in lamp holder interface of the head cover 2. As long as it is fully screwed in, the first part 21 and the third part 23 can be connected to the power supply, which improves the ease of use of the power connector.

[0053] like Figure 3 As shown, the second part 22 is a ring-shaped cone structure with a small front end and a large rear end, so that the third part 23 protrudes forward from the first part 21. This is to prevent the third part 23 from not contacting the corresponding structure of the screw-type lamp holder after the head cover 2 is screwed into place, thus affecting the conduction with the power supply. On the other hand, it is to prevent the first part 21 and the third part 23 from being too close together, which could easily cause a short circuit.

[0054] The shell 1 is preferably made of inexpensive, malleable, and relatively strong plastic. The first part 21 and the third part 23 of the head cover 2 are preferably made of metals with good electrical conductivity, low cost, and easy molding, such as widely used aluminum; the second part 22 of the head cover 2 is preferably made of ceramic with excellent insulation properties.

[0055] The following section will describe the specific structure of housing 1 and other parts of the power connector.

[0056] See Figure 2 and Figure 4 The housing 1 includes a protruding nozzle 11 at its front, the opening of which is the first opening 101. The head cover 2 is screwed onto the protruding nozzle 11. In this way, the protruding nozzle 11 acts as an internal support for the head cover 2, which can improve its strength and resistance to deformation, thereby ensuring the firmness of its connection with the screw-in lamp holder interface. In addition, the head cover 2 and the protruding nozzle 11 are connected by threads, which facilitates the production and assembly of this power connector.

[0057] See Figure 2 , Figure 5 and Figure 6 The power connector also includes a tail cap 3. The rear end of the housing 1 has a second opening 102 communicating with its inner cavity. The tail cap 3 covers the second opening 102 and is connected to the housing 1. The tail cap 3 includes a terminal block 34, which has a through-hole 341. A second wire 6 extends from the circuit board 4, with one end of the second wire 6 away from the circuit board 4 passing through the through-hole 341. Specifically, in this embodiment, two second wires 6 are provided, each passing through one of the two through-holes 341 of the terminal block 34.

[0058] To improve the waterproof capability of the power connector, the second wire 6 is fixedly connected to the tail cap 3 with waterproof adhesive (not shown), and the waterproof adhesive seals the wiring hole 341. A waterproof sealing ring (not shown) or waterproof adhesive (not shown) is provided between the head cap 2 and the protrusion 11.

[0059] To further enhance waterproofing to a level suitable for immersion, the tail cap 3 is connected to the housing 1 via ultrasonic welding, and a special sealing design is used at the connection point. Specifically, in this embodiment, as... Figures 4 to 7 As shown, the housing 1 has a recessed groove 103 around the edge of the second opening 102. The tail cap 3 is recessed into the recessed groove 103, and the front end face of the tail cap 3 is in contact with the bottom surface of the recessed groove 103. Furthermore, the tail cap 3 includes a protrusion 31 located on its front end face. The protrusion 31 extends into the inner cavity of the housing 1 from the second opening 102, and the outer side wall of the protrusion 31 is in contact with the inner side wall of the housing 1.

[0060] It should be understood that the power connector provided in this embodiment can be used not only in lighting fixtures, but also in other similar products, with equally outstanding effects.

[0061] Example 2

[0062] See Figures 8 to 10 This embodiment provides a power connector, which differs from the first embodiment in that the connection between the tail cover 3 and the housing 1 adopts a different special sealing design.

[0063] Specifically, in this embodiment, the housing 1 includes a first inner stepped surface 12 located around its rear end face and a first outer stepped surface 13 located around the first inner stepped surface 12. The rear end face of the housing 1 protrudes rearward from the first inner stepped surface 12, and the first inner stepped surface 12 protrudes rearward from the first outer stepped surface 13. The tail cap 3 includes a second inner stepped surface 32 located at the edge of its front end face and a second outer stepped surface 33 located around the second inner stepped surface 32. The second outer stepped surface 33 protrudes forward from the second inner stepped surface 32, and the second inner stepped surface 32 protrudes forward from the front end face of the tail cap 3. The rear end face of the housing 1 is in contact with the front end face of the tail cap 3, the first inner stepped surface 12 is in contact with the second inner stepped surface 32, and the first outer stepped surface 13 is in contact with the second outer stepped surface 33. Furthermore, the tail cap 3 also includes a protrusion 31 located on its front end face. The protrusion 31 extends into the inner cavity of the housing 1 from the second opening 102, and the outer sidewall of the protrusion 31 is in contact with the inner sidewall of the housing 1. Based on the aforementioned sealing design and combined with ultrasonic welding technology, this power connector also has a high level of waterproof capability, reaching the level of being immersable in water.

[0064] Apart from the differences mentioned above, the other structures and technical effects of the power connector in this embodiment are the same as those in Embodiment 1, and will not be repeated hereafter.

[0065] Example 3

[0066] This embodiment provides a lighting fixture that includes the power connectors described in the two embodiments above. The power cord of the lighting fixture is connected to the terminals of the power connector. Thanks to the fact that the power connector can be directly connected to a screw-type lamp holder, the lighting fixture is convenient to connect to power when suspended, easy to operate, and can be fixed and connected to the ceiling without additional hanging devices. Compared to existing similar products, it has a simpler and more aesthetically pleasing appearance.

[0067] The above description is for illustrative purposes only and is not intended to limit the scope of the present invention. It should be noted that those skilled in the art can make various improvements, modifications, and variations to the present invention, but such improvements, modifications, and variations should all be considered to fall within the protection scope of the present invention without departing from its spirit.

Claims

1. A power connector, characterized in that, include: The shell has a first opening at its front end that communicates with its internal cavity; A circuit board, which is placed inside the cavity of the housing; A head cover that covers the first opening and is connected to the housing. The head cover is a forward-protruding cylinder and its outer surface is provided with an external thread that extends spirally along its axis to accommodate a screw-type lamp holder with an internal thread interface. The shell is an insulator, and the head cover includes a first part, a second part, and a third part. The first part and the third part are conductors, the second part is an insulator and separates the first part and the third part, and the circuit board is electrically connected to the first part and the third part respectively through a first wire passing through the first opening.

2. The power connector as described in claim 1, characterized in that, The first part is cylindrical, and its rear end opening is the cover opening of the head cover; The second part and the third part are both located at the front opening of the first part. The second part is annular, and its outer edge is connected to the edge of the front opening of the first part. The third part is located inside the second part, and its outer edge is connected to the inner edge of the second part. The first part is connected to the housing, and the external thread is provided on the outer side of the first part.

3. The power connector as described in claim 2, characterized in that, The second part is a ring-shaped cone structure with a small front end and a large rear end, so that the third part protrudes forward from the first part.

4. The power connector as described in claim 1, characterized in that, The housing includes a protruding nozzle at its front, the opening of which is the first opening, and the head cover is screwed onto the protruding nozzle.

5. The power connector as described in claim 4, characterized in that, A waterproof sealing ring or waterproof adhesive is provided between the head cover and the protruding mouth.

6. The power connector as described in claim 1, characterized in that, It also includes a tail cap, and the rear end of the housing has a second opening communicating with its inner cavity. The tail cap covers the second opening and is connected to the housing by ultrasonic welding. The tail cap includes a wiring terminal with a through-hole. A second wire is led out from the circuit board. The end of the second wire away from the circuit board passes through the wiring hole and is fixedly connected to the tail cap with waterproof glue, and the waterproof glue seals the wiring hole.

7. The power connector as described in claim 6, characterized in that, The housing has a groove around the edge of the second opening, the tail cap is submerged in the groove, and the front end of the tail cap is in contact with the bottom of the groove.

8. The power connector as described in claim 6, characterized in that, The housing includes a first inner step surface located around its rear end face and a first outer step surface located around the first inner step surface. The rear end face of the housing protrudes rearward from the first inner step surface, and the first inner step surface protrudes rearward from the first outer step surface. The tail cap includes a second inner step surface located at the edge of its front end face and a second outer step surface located around the second inner step surface. The second outer step surface protrudes forward from the second inner step surface, and the second inner step surface protrudes forward from the front end face of the tail cap. The rear end face of the housing is in contact with the front end face of the tail cap, the first inner step surface is in contact with the second inner step surface, and the first outer step surface is in contact with the second outer step surface.

9. The power connector as described in claim 7 or 8, characterized in that, The tail cap includes a protrusion on its front end face, the protrusion extending into the inner cavity of the housing from the second opening, and the outer sidewall of the protrusion abutting against the inner sidewall of the housing.

10. A lighting fixture, characterized in that, Includes the power connector as described in any one of claims 1-9.

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