CN109672040B - ceiling lamp - Google Patents

Abstract

The invention relates to a ceiling lamp, a mounting seat, a socket and a contact pin thereof, wherein the socket comprises a socket shell, a clamping metal piece and a fixing metal piece are arranged in the socket shell, a wiring hole is formed in one end of the socket shell, a socket for inserting the contact pin is formed in the other end of the socket shell opposite to the wiring hole, the clamping metal piece and the fixing metal piece are arranged at positions corresponding to the wiring hole, the clamping metal piece is close to the fixing metal piece under the action of elasticity to clamp an electric wire, two conductive contact pieces are arranged at positions opposite to the socket, and the two conductive contact pieces are respectively connected with the two clamping metal pieces and/or the fixing metal pieces in a conductive manner. The conductive contact piece in the socket and the elastic contact in the contact pin ensure good contact and difficult loosening and disconnection through elastic energy storage, and even if the contact pin and the socket generate certain plugging deviation or are not in place, the conductive contact can be ensured to be good. Therefore, the novel energy-saving device is quick in disassembly and assembly, convenient to use, long in service life, simple and reasonable in structure and convenient to manufacture.

Description

ceiling lamp

Technical field

The present invention relates to the field of lamps, and in particular to a ceiling lamp.

Background technique

As an important lighting fixture, ceiling lamps have a series of advantages such as beautiful appearance, high brightness, safety and reliability, and energy saving. At present, ceiling lamps have been widely used in various places such as homes, offices, and entertainment venues. At present, the commonly used installation method for ceiling lamps is: first, remove the lampshade of the ceiling lamp, and then drill a hole in the ceiling. After the hole is drilled, press the plastic expansion tube into the hole and fix the lamp holder to the ceiling with screws. Connect the wires and finally install the lampshade.

In the traditional installation method, there are many types of parts and the installation is more complicated. Two people usually need to work together during the installation process. The installation time is long, and there may be safety hazards of electric shock during the operation. . In addition, the lamps need to be disassembled and assembled on site, which may cause damage to the lamps.

The patent document with publication number CN105135296 discloses a quick-installation ceiling lamp, which includes a lamp body and a quick-installation structure. The quick-installation structure is used to fix the ceiling lamp on a ceiling or a support. The quick-installation structure includes an upper Quick-release parts and lower quick-release parts. The upper quick-release parts are fixed on the ceiling or support. The lower quick-release parts are fixed on the lamp body. The lower quick-release parts are provided with limited guide rails. The upper quick-release parts are fixed on the ceiling or support. The limit guide rail should be provided with a guide rail groove. During assembly, the limit guide rail should be pushed into the guide rail groove to achieve assembly and fixation. By using elastic protrusions in the guide rail grooves to snap into the limit holes, when the lower quick-release part is pushed into the upper quick-release part, it can be stopped and fixed at the set position. By setting the width-limiting convex strips and the height-limiting convex blocks for the left and right positions and the up and down positions respectively, the problem of the lamp body shaking left and right or up and down due to the existence of movement space is avoided, ensuring the stability of the installation. It also includes an electrical connector. The electrical connector includes a female end of the socket and a male end of the socket. The female end of the socket is set on the upper quick-release part, and the male end of the socket is correspondingly set on the lower quick-release part. The lower quick-release part is When the component is assembled with the upper quick-release component, the male end of the socket is inserted into the female end of the socket to form an electrical connection. In this plan, the height-limiting ridges, width-limiting ridges and elastic bulges of the guide rail groove are used to achieve physical structural fixation, and male and female sockets are used to achieve electrical connection. The electrical connection of the male and female sockets requires that they are not easy to loosen after being plugged in to avoid contact. Defects and circuit faults, and the above-mentioned physical fixed structure is limited and fixed from top to bottom, left, right, and front. It is impossible to completely avoid the movable gap between the upper and lower quick-release parts. It is difficult to ensure high positioning accuracy, so it is difficult to ensure that the male and female parts are The mating center of the socket and the mating center of the above-mentioned physical fixed structure can maintain a completely consistent benchmark. It is easy for one of the physical connections or the conductive connections to experience stress concentration or looseness and fail. If the mating accuracy is to be improved, the manufacturing cost will increase a lot. .

The patent document with publication number CN105180031 discloses a ceiling lamp, which includes a lamp body and a lampshade installed together, an LED lamp group installed in the lamp body, a lamp body hanging plate installed on the top surface of the lamp body, and a lamp body. The ceiling hanging plate is provided with conductive pins and hanging grooves on the lamp body hanging plate; the ceiling hanging plate is provided with a chute for installing conductive copper sheets and a hook that can be hooked in the hanging groove. Slide buckle; the lower end of the conductive needle is connected to the electrical input end of the LED lamp set, and the upper end slides into the chute and is in contact with the conductive copper sheet in the slot; there is a sliding hook on one side of the hanging slot of the lamp body hanging plate. After the buckle is inserted, it slides toward the slide buckle jack of the hanging slot; the conductive copper sheet is connected to the external transmission line. In this solution, the lamp body is hung on the ceiling hanging plate, and the conductive pins and conductive copper sheets are connected in contact. Because the chute hanging structure is not strong enough and easy to loosen, and the service life is short, it is easy to cause poor contact between the conductive pins and the conductive copper sheets. circuit failure.

Contents of the invention

In order to solve the above technical problems, the purpose of the present invention is to provide a ceiling lamp in which the conductive contacts in the socket and the elastic contacts in the pins ensure good contact through elastic force and are not easy to loosen and disconnect, and even if the pins and sockets are Even if the plugging is offset or not in place to a certain extent, good conductive contact can also be ensured. In this way, it is not only quick to disassemble and assemble, easy to use, and has a long service life, but also has a simple and reasonable structure and is easy to manufacture.

In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions:

A socket for a ceiling lamp, including a socket shell (4020), characterized in that a clamping metal part (4023) and a fixing metal part (4024) are installed in the socket shell (4020). One end of the socket shell (4020) A wiring hole (4022) is provided. The other end of the socket shell (4020) opposite to the wiring hole is provided with a socket for the pin (304) to be inserted. The clamping metal piece (4023) and the fixing metal piece (4024) are arranged on the At the position corresponding to the wiring hole (4022), the clamping metal piece (4023) is close to the fixed metal piece (4024) under the action of elastic force to clamp the wire. Two conductive contacts (4025) are installed at the position opposite to the socket. The two conductive contact pieces (4025) are conductively connected to the two clamping metal parts (4023) and/or the fixing metal parts (4024) respectively.

Preferably, the clamping metal piece (4023) is a metal spring with a V-shaped opening for clamping the wire. The metal spring is tilted along the wire insertion direction. A button (4021) is installed on the socket housing (4020). The button The two arms of (4021) extend through the fixed metal piece (4024) and press against the metal spring piece; when the wire is inserted between the clamping metal piece (4023) and the fixed metal piece (4024) and is clamped by the metal piece (4023) ), press the button (4021) to compress the metal spring to remove the wire.

Preferably, the conductive contact piece (4025), the fixed metal piece (4024) and the clamping metal piece (4023) are made by punching and bending conductive metal sheets, and the conductive contact piece (4025) and the fixed metal piece (4024) are formed on On the same conductive metal piece, the clamping metal part (4023) is formed separately.

A mounting base for a ceiling lamp, characterized in that the mounting base (401) is provided with a plug-in through hole (4012), a mounting hole (4013) and a wire perforation, and the plug-in through hole (4012) is provided on the mounting base. On the side wall, a ceiling lamp socket (402) as described above is fixed inside the mounting base at a position corresponding to the plug-in through hole (4012). A plurality of mounting holes (4013) are opened on the top of the mounting base. The base is fixedly installed on the ceiling or support plate through the mounting holes (4013) and fasteners.

The pin matched with the above-mentioned ceiling lamp socket is characterized in that it includes a pin inner shell (3041) and a pin outer shell (3040) that are fixed internally and externally, and a contact is arranged on the front of the pin inner shell (3041). The head (3044), the contact (3044) is conductively connected to the electrical connector (3042), the front end of the contact (3044) extends out of the front through hole of the pin shell (3040), and the electrical connector (3042) extends out of the pin Outside the shell (3041); the contact (3044) is an elastic contact. When the pin (304) is plugged into the socket (402), the elastic contact contacts the conductive contact piece (4025) and produces a certain retraction.

Preferably, the elasticity of the contact (3044) is provided by a compression spring (3045).

A ceiling lamp is characterized in that it includes the pin as mentioned above.

Since the present invention adopts the above solution, the conductive contacts in the socket and the elastic contacts in the pins ensure good contact through elastic force and are not easy to loosen and disconnect, and even if the pins and sockets are plugged to a certain extent, they are offset or not in place. , which can also ensure good conductive contact. In this way, it is not only quick to disassemble and assemble, easy to use, and has a long service life, but also has a simple and reasonable structure and is easy to manufacture.

Description of the drawings

Figure 1 is a schematic diagram of the explosion structure of the present invention.

Figure 2 is a schematic structural diagram of the lamp body.

Figure 3 is a structural diagram of the mounting base (top).

Figure 4 is a schematic structural diagram of the mounting base (bottom).

Figure 5 is a schematic structural diagram of the lamp body base.

Figure 6 is a schematic diagram of the installation structure of the movable block.

Figure 7 is a schematic structural diagram of the moving block.

Figure 8 is a schematic diagram of the matching structure between the movable block and the mounting socket.

Figure 9 is a schematic diagram of the open structure of the socket.

Figure 10 is a schematic diagram of the mating of pins and sockets (not plugged in).

Figure 11 is a schematic diagram of the mating of pins and sockets (plugging).

Among them, the reference symbols are explained as follows:

Lamp frame 101, annular sheet 102, heat dissipation strip 201, annular light strip 202, diffusion plate 203, light guide plate 204, reflective layer 205, foam layer 206, back plate 207, cover plate 301,

The movable block 302, the insertion tongue 3021, the spring positioning post 3022, the side wall 3023, the convex rib 3024,

Lamp body base 303, installation slot 3031, tongue hole 3032, pin hole 3033, card slot 3034, installation space 3035, hook part 3036, movable block box 3037, spring embedding slot 3038, spring 3039,

Pin 304, pin shell 3040, pin inner shell 3041, electrical connector 3042, hook 3043, contact 3044, compression spring 3045,

Mounting base 401, positioning jack 4011, insertion through hole 4012, mounting hole 4013, positioning edge 4014,

Socket 402, socket shell 4020, button 4021, wiring hole 4022, clamping metal part 4023, fixed metal part 4024, conductive contact part 4025.

Implementation

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " The directions or positional relationships indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" etc. are based on the attached The orientations or positional relationships shown in the figures are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed and operated in specific orientations, and therefore cannot be understood as limiting the present invention. Limitations of Invention.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise stated, the meaning of "plurality" is two or more than two, unless otherwise clearly defined.

In the present invention, unless otherwise clearly stated and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present invention, unless otherwise expressly provided and limited, the term "above" or "below" a first feature of a second feature may include direct contact between the first and second features, or may also include the first and second features. Not in direct contact but through additional characteristic contact between them. Furthermore, the terms "above", "above" and "above" a first feature on a second feature include the first feature being directly above and diagonally above the second feature, or simply mean that the first feature is higher in level than the second feature. “Below”, “under” and “under” the first feature is the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is less horizontally than the second feature.

A ceiling lamp as shown in Figure 1 includes a lamp body and a mounting base 401 for mounting on a ceiling or a support plate. The lamp body includes a lamp frame 101, a light-emitting component and a lamp body base 303. The light-emitting component is installed in the installation space formed by the lamp frame 101 and the lamp body base 303. The mounting base 401 is provided with a socket 402 and a positioning jack 4011. The lamp body base 303 is provided with a movable block 302 and a pin 304. The lamp body and the mounting base 401 are detachable through the movable block 302 and the positioning jack 4011. fixed connection, and conductive connection is achieved through plug-fitting of the socket 402 and the pin 304.

In this embodiment, the lamp frame 101 and the lamp body base 303 are fixedly connected through buckles. In other embodiments, the two can also be fixedly connected through structures such as fasteners.

The light-emitting component can be a conventional LED lamp panel structure or a traditional lamp tube structure. In this embodiment, the light-emitting component is a surface light-emitting structure with a light guide plate and is thinner; including a diffusion plate 203, a light guide plate 204, a reflector Layer 205, foam layer 206, back plate 207 and annular light bar 202 surrounding the light guide plate 204, the light emitting component is surrounded by the light frame 101. The ring light bar 202 is formed by soldering LED chips on a flexible circuit board. In order to improve the heat dissipation performance of the ring light bar 202, the light frame 101 uses an aluminum ring, and a heat dissipation rubber strip 201 is filled between the ring light bar 202 and the aluminum ring, so that the aluminum ring can be used for heat dissipation. In order to increase the decorative effect, an annular piece 102 (such as an annular wooden ring, a metal ring, etc.) can be provided between the light-emitting component and the lamp frame 101 .

As shown in Figures 1 and 2, the base 303 of the lamp body is provided with an installation slot 3031 for accommodating the mounting base 401. One side of the installation slot is open, and the opposite left and right walls of the installation slot have openings for The movable block 302 extends out of the tongue hole 3032 of the tongue 3021, and the other side wall of the installation groove opposite to the opening has a pin hole 3033 for installing the pin 304. As shown in Figures 5 and 6, an installation space 3035 is formed in the base 303 of the lamp body. The installation space 3035 is divided into movable block boxes 3037 on both sides corresponding to the position of the installation groove 3031. The movable block 302 is installed in the movable block box 3037. And covered by the cover plate 301. The installation space 3035 is provided with several slots 3034 and hooks 3036 in a part of the space outside the movable block box to facilitate the installation of components such as circuit boards. As shown in Figures 6 and 7, the front end of the movable block 302 is provided with an insertion tongue 3021. The front part of the insertion tongue 3021 is arc-shaped. The left and right side walls 3023 of the movable block 302 are also arc-shaped. The rear end of the movable block 302 is also arc-shaped. Several elastic members are installed against the movable block box 3037 to urge the inserting tongue 3021 of the movable block 302 to protrude from the inserting tongue hole 3032 on the lamp body base 303 under the action of elastic force. The movable block adopts an arc-shaped side wall, which allows the movable block to slide under the action of elastic force and at the same time produce a certain range of swing tilt. The elastic member can be a spring, a spring leaf, etc. In this embodiment, a plurality of springs 3039 are provided. The rear end of the movable block 302 is a hollow groove, and a plurality of spring positioning posts 3022 are provided in the hollow groove. The movable block box 3037 has There are a plurality of spring embedding grooves 3038 corresponding to the spring positioning posts 3022. One end of the spring 3039 is connected to the spring positioning post 3022, and the other end of the spring 3039 is connected to the spring embedding grooves 3038. In order to facilitate guiding and limiting and/or smooth sliding, the bottom surface and/or top surface of the movable block 302 is provided with a number of convex ribs 3024. The movable block 302 is in sliding contact with the lamp body base 303 and/or the cover 301 through the convex ribs. In other embodiments, several rolling balls can also be provided on the bottom surface and/or the top surface of the movable block 302, and the movable block 302 is in rolling contact with the lamp body base 303 and/or the cover 301 through the rolling balls to achieve flexible and flexible operation. move. Preferably, the lamp body base 303 and the movable block are plastic parts, and further preferably, the movable block is made of smooth and wear-resistant material.

As shown in Figures 3 and 4, the mounting base 401 is provided with a positioning jack 4011, a plug-in through hole 4012, a mounting hole 4013 and a wire penetration hole. The mounting base 401 has a mounting slot 3031 that matches the lamp body base 303. Positioning edge 4014, positioning jack holes 4011 are opened on the side walls on opposite sides of the mounting base 401, plug-in through holes 4012 are opened on the other side wall of the mounting base, and the inside of the mounting base is in a position corresponding to the plug-in through hole 4012. A socket 402 is fixed in position, and a plurality of mounting holes 4013 are opened on the top of the mounting base. The mounting base is fixedly installed on the ceiling or support plate through the mounting holes 4013 and fasteners. The mounting base can be a metal sheet metal part or a plastic part. In order to ensure smooth and wear-resistant contact between the loose block tongue 3021 and the positioning jack 4011, the positioning jack 4011 can be smoothed, or a smooth and wear-resistant screw can be provided on the positioning jack 4011. Wear coating or smooth wear-resistant ferrule.

As shown in Figure 8, the length of the insertion tongue 3021 is greater than the length of the positioning jack 4011. When the insertion tongue 3021 is inserted into the positioning jack 4011, its arc front end is plugged and matched with the positioning jack 4011. In this way, the insertion tongue 3021 and the positioning plug Hole 4011 is a live fit. Not only can the positioning and locking be automatically adjusted when the moving block swings, but the two can be repeatedly plugged in or separated adaptively, and the two do not need to be separated by external force for a dead fit. Moreover, the two left and right movable blocks 302 can always press against both sides of the mounting base 401 under the action of elastic force to prevent the lamp body from loosening and being unstable relative to the mounting base.

The socket 402 shown in Figures 9, 10, and 11 includes a socket shell 4020. A clamping metal part 4023 and a fixing metal part 4024 are installed in the socket shell 4020. One end of the socket shell 4020 is provided with two wiring holes. 4022. The opposite end of the socket housing 4020 is provided with a socket for the pin 304 to be inserted. The clamping metal piece 4023 and the fixing metal piece 4024 are arranged at positions corresponding to the wiring holes 4022. The clamping metal piece 4023 approaches under the action of elastic force. The fixed metal piece 4024 is used to clamp the wire, and two conductive contacts 4025 are installed at positions corresponding to the sockets. The two conductive contacts 4025 are conductively connected to the two clamping metal pieces 4023 and/or the fixing metal piece 4024 respectively. In this embodiment, the clamping metal piece 4023 is a metal elastic piece with a V-shaped opening for clamping the wire. The metal elastic piece is inclined along the wire insertion direction. In this way, when the wire is inserted between the clamping metal piece 4023 and the fixing metal piece 4024 and is clamped by the V-shaped opening of the clamping metal piece 4023, external force must be applied to the metal spring piece to compress it to pull out the wire, avoiding loosening of the wire, and it can self-lock without tools for convenient wiring. In order to facilitate the compression of the metal spring piece, a button 4021 is installed on the socket shell 4020. The two arms of the button 4021 extend through the fixed metal piece 4024 and press against the metal spring piece. In this way, the metal spring piece can be compressed through the button 4021 outside the socket to remove the wire. . The conductive contact piece 4025, the fixed metal piece 4024 and the clamping metal piece 4023 are preferably made by punching and bending conductive metal sheets such as copper sheets. The conductive contact piece 4025 and the fixed metal piece 4024 are formed on the same conductive metal piece, and the clamping metal piece Part 4023 is molded individually.

The pin 304 shown in Figures 10 and 11 includes a pin inner shell 3041 and a pin outer shell 3040 that are fixed internally and externally. A contact 3044 is provided at the front of the pin inner shell 3041, and the contact 3044 conducts electricity with the electrical connector 3042. To connect, the front end of the contact 3044 extends out of the front through hole of the pin shell 3040, and the electrical connector 3042 is fixed on the pin inner shell 3041. The contact 3044 is an elastic contact. When the pin 304 is plugged into the socket 402, the elastic contact contacts the conductive contact 4025 and produces a certain retraction. This ensures good contact through the elastic force and is not easy to loosen and disconnect, and Even if the pins and sockets are offset to a certain extent or not in place, good conductive contact can be ensured. In this embodiment, the elasticity of the contact 3044 is provided by the compression spring 3045. A hook 3043 is provided at the rear of the pin 304. The pin 304 is inserted into the pin hole 3033 from the installation slot 3031 on the lamp body base 303, and snap-fits with the pin hole 3033 through the hook 3043. In this way, when the pin is inserted When 304 is plugged into socket 402, the pin hole wall can block the pin from retracting to ensure a firm plug. At the same time, the snap connection also has a certain range of movement, which can achieve adaptive cooperation between the pin and the socket, not only ensuring that the plug is securely connected. The connection is reliable and firm, and it can reduce the precision requirements of manufacturing and assembly and reduce costs.

During installation, the mounting base 401 is first installed and fixed on the ceiling or support plate through fasteners, and then the wires are inserted into the wiring hole 4022 of the socket 402, and then the lamp body is inserted into the mounting base 401 along the mounting groove 3031, and then the lamp body is inserted into the mounting base 401 along the mounting groove 3031. During this time, the movable block undergoes swinging and sliding, and finally the plug tongue on the movable block is reliably inserted into the positioning jack on the mounting base to achieve a fixed connection between the two, and the pin is inserted into the socket to achieve a conductive connection, completing the installation of the ceiling lamp. The fixed connection is realized by using the combination of the loose plug tongue and the positioning jack, which not only achieves multi-directional and multi-angle positioning and continuous locking and fixation, but also has good adaptability; the conductive metal parts on the pin elastic plug and socket are used The elasticity offsets the conductive connection, making the contact good and not easy to loosen and disconnect. It also has good adaptability and a long service life.

It should be noted that the above embodiments are only representative examples of the present invention. The invention is also capable of many variations. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the essence of the present invention should be considered to belong to the protection scope of the present invention.

Claims (4)

1. A ceiling lamp, including a matching socket and pins, characterized by: The socket (402) includes a socket shell (4020). A clamping metal part (4023) and a fixing metal part (4024) are installed in the socket shell (4020). One end of the socket shell (4020) is provided with a wiring hole ( 4022), the other end of the socket shell (4020) opposite to the wiring hole is provided with a socket for the insertion of the pin (304), and the clamping metal part (4023) and the fixing metal part (4024) are arranged on the wiring hole (4022) At the corresponding position, the clamping metal piece (4023) is close to the fixed metal piece (4024) under the action of elastic force to clamp the wire. Two conductive contacts (4025) are installed at a position opposite to the socket. The two conductive contacts (4025) are conductively connected to two clamping metal parts (4023) and/or fixed metal parts (4024) respectively; The pin (304) includes a pin inner shell (3041) and a pin outer shell (3040) that are fixed internally and externally. A contact (3044) is provided at the front of the pin inner shell (3041), and the contact (3044) is connected to the electrical connector. The connector (3042) is conductively connected, the front end of the contact (3044) extends out of the front through hole of the pin shell (3040), and the electrical connector (3042) extends out of the pin inner shell (3041); the contact (3044) is Elastic contact, when the pin (304) is plugged into the socket (402), the elastic contact contacts the conductive contact (4025) and produces a certain retraction; It also includes a mounting base (401). The mounting base (401) is provided with a plug-in through hole (4012), a mounting hole (4013) and a wire penetration hole. The plug-in through hole (4012) is provided on the side wall of the installation base. The socket (402) is fixed inside the mounting base at a position corresponding to the insertion through hole (4012). A plurality of mounting holes (4013) are opened on the top of the mounting base. The mounting base is fixed through the mounting holes (4013) and fasteners. Installed on the ceiling or support board; It also includes a lamp body, which includes a lamp frame (101), a light-emitting component and a lamp body base (303). The light-emitting component is installed in the installation space formed by the lamp frame (101) and the lamp body base (303); the mounting base (401) is provided with a positioning jack (4011), the base of the lamp body (303) is provided with a movable block (302) and the pin (304), and the lamp body and the mounting base (401) pass through the movable block (302) It is plugged and matched with the positioning jack (4011) to achieve a detachable fixed connection, and the socket (402) and pin (304) are plugged and matched to achieve a conductive connection; The lamp body base (303) is provided with an installation slot (3031) for accommodating the mounting base (401). One side of the installation slot is open, and the opposite left and right walls of the installation slot are provided with movable blocks (302). The tongue hole (3032) of the tongue (3021) extends out, and the other side wall of the installation groove opposite to the opening has a pin hole (3033) for installing the pin (304); The front end of the movable block (302) is provided with an insertion tongue (3021). The front part of the insertion tongue (3021) is arc-shaped. The left and right side walls (3023) of the movable block (302) are also arc-shaped. Several elastic pieces are installed at the rear end to offset the movable block box (3037) to urge the inserting tongue (3021) of the movable block (302) to protrude from the inserting tongue hole (3032) on the lamp body base (303) under the action of elastic force; The length of the plug tongue (3021) is greater than the length of the positioning jack (4011) on the mounting base (401). When the plug tongue (3021) is inserted into the positioning jack (4011), its arc front end is inserted into the positioning jack (4011). Connect and cooperate; There is a hook (3043) at the rear of the pin (304). The pin (304) is inserted into the pin hole (3033) from the installation slot (3031) on the lamp body base (303) and passes through the hook (3043). Snap fit with pin hole (3033). 2. A ceiling lamp according to claim 1, characterized in that the clamping metal piece (4023) is a metal elastic piece with a V-shaped opening for clamping the wire, and the metal elastic piece is arranged obliquely along the insertion direction of the electric wire. A button (4021) is installed on the socket shell (4020), and the two arms of the button (4021) extend through the fixed metal piece (4024) and press against the metal spring piece; when the wire is inserted into the clamping metal piece (4023) and fixed When the metal parts (4024) are clamped by the V-shaped opening of the clamped metal parts (4023), press the button (4021) to compress the metal shrapnel to remove the wire. 3. A ceiling lamp according to claim 1, characterized in that the conductive contact piece (4025), the fixing metal piece (4024) and the clamping metal piece (4023) are made by punching and bending conductive metal sheets. The conductive contact piece (4025) and the fixed metal piece (4024) are formed on the same conductive metal piece, and the clamping metal piece (4023) is formed separately. 4. A ceiling lamp according to claim 1, characterized in that the elasticity of the contact (3044) is provided by a compression spring (3045).