Lamp and elastic contact terminal at end thereof

Abstract

The application provides a flexible contact terminal of a lamp end, comprising a plug-in frame which is suitable for being connected to the end of a lamp shell, two conductive elastic sheets are arranged in the plug-in frame, wherein the conductive elastic sheets extend along the length direction of the shell, the length of the conductive elastic sheets is greater than the length of the plug-in frame and includes a clamping joint exposed to the plug-in frame, the clamping joints of the two conductive elastic sheets are arranged to be relatively open and close, the inner sides of the clamping joints abut against elastic elements, and the deformation restoring force of the elastic elements makes the clamping joints have a tendency to open outwards. The application aims at solving the problems of insufficient elasticity and permanent deformation of the spring contact terminal of a small lamp caused by long time use, can ensure the continuous and effective contact between the conductive elastic sheets and the conductive strip, significantly improves the reliability and service life of the lamp, and has high practicability and economy.

Description

Technical Field

[0001] This invention relates to the field of lighting fixtures, and more particularly to a lighting fixture and a resilient contact terminal at its end. Background Technology

[0002] Due to space constraints, the reed contact terminals of small lamps are often difficult to design into large or complex structures, directly resulting in insufficient elasticity. During prolonged use, the reed contact terminals are prone to permanent deformation due to frequent mechanical stress, leading to a reduction in contact area and insufficient contact volume. When the pressure between the contact terminals is insufficient to maintain stable electrical contact, current transmission is affected, ultimately causing the lamp to malfunction and fail to light up. This problem not only impacts the user experience but may also pose safety hazards.

[0003] Therefore, how to design a reliable and economical reed contact terminal within a limited space has become a technical problem that urgently needs to be solved in the field of small lamp design and manufacturing.

[0004] Therefore, those skilled in the art are dedicated to developing a luminaire and its end resilient contact terminal, aiming to solve the problem of insufficient elasticity and permanent deformation of the spring contact terminal of small luminaires due to long-term use. Summary of the Invention

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is the problem of insufficient elasticity and permanent deformation of the spring contact terminals in existing small lamps due to long-term use.

[0006] To achieve the above objectives, the present invention provides an elastic contact terminal for the end of a lamp fixture, comprising a connector frame suitable for mating and connecting to the end of the lamp fixture housing. The connector frame is provided with two conductive spring pieces spaced apart, wherein the conductive spring pieces extend along the length direction of the housing, the length of the conductive spring pieces is greater than the length of the connector frame, and includes a snap-fit ​​connector protruding from the connector frame. The snap-fit ​​connectors of the two conductive spring pieces are configured to be able to open and close relative to each other, and an elastic element abuts against the inner sides of the snap-fit ​​connectors facing each other. The deformation restoring force of the elastic element causes the snap-fit ​​connectors to have a tendency to open outward.

[0007] Furthermore, the conductive spring includes a fixed part and a movable part. The fixed part is fixedly installed in conjunction with the plug-in bracket, and the movable part is connected between the fixed part and the snap-fit ​​connector along the length direction. The plug-in bracket is provided with a movable gap for the movable part so that the movable part can swing along the width direction.

[0008] Furthermore, the connector includes a base plate and a mounting wall, wherein the base plate extends along the length of the housing, the conductive spring is adapted to be mounted on the base plate, and the mounting wall is vertically disposed on both sides of the base plate and is connected to the inner side of the housing.

[0009] Furthermore, a spacer rib is protruding on the substrate, the spacer rib extends along the length of the housing, two conductive springs are installed on different sides of the spacer rib and positioned between the spacer rib and the mounting wall, and the elastic element abuts between the spacer rib and the conductive spring.

[0010] Furthermore, the two snap-fit ​​connectors have recesses formed on opposite sides along the width direction, and the elastic element abuts against the recesses to open the snap-fit ​​connectors outward; a relief groove is formed extending from the recesses toward the end away from the snap-fit ​​connectors, and is configured to provide a receiving space for the elastic element when it is compressed and deformed.

[0011] Preferably, the middle part of the elastic element includes a bent portion, which is configured to abut against the recess of the snap connector. One end of the elastic element is a support foot, which is configured to form a support point in the plug-in frame. The other end is a movable foot, which is configured to move in the relief groove as the elastic element deforms. The elastic element is configured to be able to open under force and to have a tendency to move the movable foot toward the support foot end under deformation recovery force.

[0012] Furthermore, the clearance groove includes one or more inclined surfaces extending from the snap-fit ​​connector to the fixed portion, thereby making the radial dimension of the moving portion smaller than that of the fixed portion.

[0013] Furthermore, the connector also includes a cover plate, which cooperates with the base plate to cover and form a receiving space that isolates the two conductive springs respectively, while providing a support point for the elastic element.

[0014] The present invention also provides a strip lamp, including a strip-shaped housing, an opening at one end along the length direction of the housing, a circuit board fixedly assembled inside the housing, and elastic contact terminals as described above installed along the end of the housing, conductive springs electrically connected to the circuit board inside the housing, and a snap-fit ​​connector exposed outside the housing.

[0015] Furthermore, the tail of the conductive spring includes a support extending along its length within the housing, and the end of the support of each conductive spring is embedded in a connection hole on the circuit board to be electrically connected to the positive and negative lines of the circuit board.

[0016] Furthermore, the housing includes a bottom surface and two side walls. An assembly groove is provided on the inner side of the side wall, and a plug strip adapted to the assembly groove is provided on the outer side of the plug frame. Each side assembly groove includes a wire groove. A conductive strip is assembled along the wire groove inside the housing. The conductive spring includes a side extension that extends laterally and exposes the plug frame. After the plug frame is assembled, the conductive spring on each side is electrically connected to the conductive strip through the side extension.

[0017] Furthermore, the conductive spring and the conductive strip are located on the same mounting surface, and the side of the side extending toward the tail of the conductive spring has an inwardly inclined guide surface.

[0018] Technical effects:

[0019] This invention proposes a novel solution to address the issues of insufficient elasticity and permanent deformation of the spring contact terminals in small lighting fixtures due to prolonged use. By cleverly incorporating a spring structure within the connector frame, this invention automatically provides a strong rebound force when the conductive spring deforms. This design not only ensures continuous and effective contact between the conductive spring and the conductive strip but also significantly improves the reliability and lifespan of the lighting fixture.

[0020] Furthermore, this conductive spring has a simple structure, is easy to manufacture and install, and greatly reduces production costs. This invention not only solves the problems existing in the prior art, but also possesses high practicality and economy, bringing new ideas and technological breakthroughs to the design and production of small lamps.

[0021] The following will further explain the concept, specific structure, and technical effects of the present invention in conjunction with the accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the elastic contact terminal at the end of the lamp of the present invention.

[0023] Figure 2 yes Figure 1 A schematic diagram of the internal structure of the lamp.

[0024] Figure 3 This is a schematic diagram of the structure of the elastic contact terminal of the present invention.

[0025] Figure 4 yes Figure 3 A schematic diagram of the explosion structure.

[0026] Figure 5 This is a longitudinal cross-sectional structural diagram of an embodiment of the lamp of the present invention.

[0027] Figure 6 This is a schematic diagram of the bottom structure of the lamp of the present invention.

[0028] The components include: 100 elastic contact terminal, 1 plug-in bracket, 11 base plate, 12 mounting wall, 13 spacer rib, 14 front baffle, 15 plug-in strip, 16 buckle, 17 limiting block, 2 conductive spring, 21 snap connector, 211 recess, 212 clearance groove, 213 guide slope, 22 fixing part, 23 movable part, 24 support leg, 25 side extension part, 3 elastic element, 31 bending part, 32 support leg, 33 movable leg, 4 cover plate, 41 crossbar, 5 circuit, 51 LED chip, 6 conductive strip, 7 lampshade, 8 partition, 1000 lamp, 200 housing, 201 bottom surface, 202 side wall, 203 assembly groove, and 204 snap interface. Detailed Implementation

[0029] This invention provides a resilient contact terminal at the end of a lamp 1000, which includes a plug-in bracket 1, such as... Figure 1 As shown, the device is suitable for connecting to the end of the housing 200 of the lamp 1000. The housing 200 extends along its length and has an opening at its end. The resilient contact terminal 100 of the present invention is connected to the housing 200. The plug-in frame 1 has the same extending direction as the lamp housing. Conductive springs 2 are provided at intervals in the plug-in frame 1. The conductive springs 2 extend along the length of the housing 200. The length of the conductive springs 2 is greater than the length of the plug-in frame 1 and includes a snap-fit ​​connector 21 exposed in the plug-in frame 1. The conductive springs 2 are used for connecting the positive and negative circuits. Generally, two are provided. Further, they are provided at intervals in the plug-in frame 1 to achieve electrical isolation. The snap-fit ​​connectors 21 of the two conductive springs 2 are configured to be able to open and close relative to each other. Figure 2 The inner side of the snap-fit ​​connector 21 abuts against the elastic element 3, and the deformation recovery force of the elastic element 3 causes the snap-fit ​​connector 21 to tend to open outward. According to the above structure, when the end of the elastic contact terminal 100 of the present invention is interconnected, the snap-fit ​​connector 21 opens outward, and a stable interconnection with other external housing structures of the same type is achieved.

[0030] The conductive spring 2 includes a fixed part 22 and a movable part 23. The fixed part 22 is fixedly installed in conjunction with the connector 1. The movable part 23 is connected between the fixed part 22 and the snap-fit ​​connector 21 along the length direction. The connector 1 has a clearance for the movable part 23, allowing it to swing along the width direction. The conductive spring 2 is resilient and bendable. After the two conductive springs 2 are installed, under an inward external force, the two movable parts 23 swing inward, causing the snap-fit ​​connector 21 connected to its front end to move inward, reducing its radial width for easier installation. Subsequently, under the restoring force of the elastic element 3, the snap-fit ​​connector 21 opens outward, causing the two movable parts 23 to swing outward. In this way, the two conductive springs 2 move on different sides along their mounting plane. Preferably, the snap-fit ​​connector 21 moves laterally and telescopically along the width direction as the movable part 23 swings.

[0031] like Figure 3 and Figure 4 The diagram shows the structure of the elastic contact terminal. The connector 1 includes a base plate 11 and a mounting wall 12. The base plate 11 extends laterally along the length of the housing 200 and is suitable for mounting conductive springs 2. The mounting wall 12 is vertically disposed on both sides of the base plate 11 and is connected to the inner side of the housing 200. A spacer rib 13 is protruding on the base plate 11 and extends along the length of the housing 200 to separate the mounting space on the base plate 11. Two conductive springs 2 are each mounted on different sides of the spacer rib 13 and positioned between the spacer rib 13 and the mounting wall 12. An elastic element 3 abuts against the spacer rib 13 and the conductive spring 2.

[0032] Two snap-fit ​​connectors 21 have recesses 211 formed on opposite sides along their width. The elastic element 3 abuts against the recesses 211, causing the snap-fit ​​connectors 21 to open outwards. Simultaneously, the recesses 211 provide space for a portion of the elastic element 3 to be positioned within them, preventing the elastic element 3 from dislodging during movement. Furthermore, a clearance groove 212 extends from the recesses 211 towards the end away from the snap-fit ​​connectors 21, providing a space for the elastic element 3 to accommodate compression deformation. When the elastic element 3 is compressed and deformed, a portion is locked in the recesses 211, while the extended portion deforms and expands / contracts within the clearance groove 212.

[0033] In one specific embodiment of the present invention, the elastic element 3 is configured as an elongated metal part, specifically, a metal strip or a metal wire. The elastic element 3 includes a bent portion 31 in the middle, which abuts against the recess 211 of the snap-fit ​​connector 21 during use. One end of the elastic element 3 is a support leg 32, configured to form a support point in the connector 1, and the other end is a movable leg 33, configured to extend and move within the clearance groove 212 as the elastic element 3 elastically deforms. The elastic element 3 is configured to be able to open under force and has a tendency to bring its two ends closer together under deformation recovery force. For the bent elastic element 3, it deforms and extends under force. When installed inside the snap-fit ​​connector 21, the support leg 32 abuts against the front end of the substrate 11, and the bent portion 31 is embedded in the recess 211 of the snap-fit ​​connector 21. As it deforms and extends, one side of the movable leg 33 moves away from the support leg 32, causing the elastic element 3 to tend to open. The clearance groove 212 provides space for the movable leg 33 to move. Under the elastic restoring force, the elastic element 3 tends to return to its original bent state, the movable foot 33 approaches the support foot 32, and at the same time, the bent part 31 of the elastic element 3 arches up, causing the snap connector 21 to extend outward.

[0034] The clearance groove 212 includes one or more inclined surfaces extending from the snap-fit ​​connector 21 to the fixing part 22, so that the radial dimension of the movable part 23 is smaller than that of the fixing part 22 and can swing within the space provided by the base plate 11, while also allowing the movable foot 33 of the elastic element 3 to have room for extension.

[0035] In addition, the connector 1 also includes a cover plate 4, which fits and covers the base plate 11 to form a receiving space that isolates the two conductive spring pieces 2 respectively, while providing a support point for the elastic element 3. After the cover plate 4, base plate 11 and spacer rib 13 are fitted together, a set of conductive spring pieces 2 and elastic element 3 are respectively accommodated on both sides of the spacer rib 13. The front end of the base plate 11 has an upright front baffle 14, and the end of the spacer rib 13 is provided with an installation gap corresponding to the front baffle 14. A horizontal strip 41 extends downward from the front end of the bottom side of the cover plate 4. When the cover plate 4 is closed, the horizontal strip 41 is embedded between the front baffle 14 and the spacer rib 13 to achieve a tight fit between the two, and to form an exposed opening between the front baffle 14 and the mounting wall 12 suitable for the telescopic movement of the snap connector 21.

[0036] Based on the aforementioned elastic contact terminals, the present invention further provides a strip lamp 1000, such as... Figure 5 As shown, the lamp 1000 includes a strip-shaped housing 200 with an opening at one end along its length. A strip-shaped circuit board 5 is fixedly mounted inside the housing 200. The aforementioned elastic contact terminal 100 is installed along the end of the housing 200. A conductive spring 2 is electrically connected to the circuit board 5 inside the housing 200. A snap-fit ​​connector 21 protrudes outside the housing 200 for external interconnection. Further, the tail of the conductive spring 2 includes a support leg 24 extending along its length inside the housing 200. The support leg 24 of each conductive spring 2 extends beyond the base plate 11 of the connector 1. The ends of each support leg 24 are respectively embedded in the connection holes on the circuit board 5, and the support leg 24 is electrically connected to the positive and negative lines of the circuit board 5.

[0037] like Figure 1 The housing 200 includes a bottom surface 201 and two side walls 202, which are integrally formed. An assembly groove 203 is provided on the inner side of the side wall 202, and a plug-in strip 15 adapted to the assembly groove 203 is provided on the outer side of the plug-in bracket 1. One or more plug-in strips 15 can be provided along the mounting wall 12 on each side. Additionally, a base with a certain strength is fitted externally to the housing 200, or it can be installed in a track. In one embodiment of the invention, each side assembly groove 203 includes a wire groove, and a conductive strip 6 is assembled along the wire groove inside the housing 200. The conductive spring piece 2 includes a side extension 25 extending laterally and exposing the plug-in bracket 1. After the plug-in bracket 1 is assembled, the conductive spring piece 2 on each side is electrically connected to the conductive strip 6 through the side extension 25, so that the lamps draw power through the conductive strip 6 when cascaded.

[0038] The lamps of the present invention are suitable for interconnection of multiple lamps of the same type. When the lamps are interconnected, since a portion of the elastic contact terminal 100 of the lamp is located outside the housing 200, it can make electrical contact with the conductive strip 6 inside another lamp through the exposed snap-fit ​​connector 21. When one lamp is energized, all lamps cascaded with it can be energized, thereby achieving conductivity. Furthermore, the lateral extension length of the snap-fit ​​connector 21 for power extraction is equivalent to that of the side extension portion 25, achieving good electrical contact with conductive strips 6 at equal intervals.

[0039] Figure 6 The bottom structure of the lamp is illustrated, with the lamp housing blurred to show the various components installed inside. Furthermore, the bottom of the connector 1 is provided with a snap fastener 16, and a snap-fit ​​interface 204 adapted to the snap fastener 16 is provided on the bottom surface 201 of the housing 200 to maintain a stable connection after assembly. Optionally, the bottom of the connector 1 is provided with a limiting block 17, which abuts against the outside of the housing 200 after the connector 1 and housing 200 are assembled to further prevent relative movement between the two.

[0040] The conductive spring 2 is mounted and extends on the connector 1. Specifically, a base plate 11 extends along the length direction of the connector 1. The base plate 11 has gap ribs. The fixing part 22 in the middle of the conductive spring 2 is installed between the gap ribs and the mounting wall 12. Optionally, the width of the fixing part 22 and the gap width of the gap ribs are equivalent to the width of the gap between the mounting wall 12, so that the conductive spring 2 can be fixedly clamped therebetween. Both ends of the base plate 11 extend beyond the mounting wall 12 along the length direction, and the snap connector 21 and the side extension 25 extend laterally. Preferably, the snap connector 21 and the side extension 25 each extend outward from the front and rear ends of the mounting wall 12 along the length direction, so that the conductive spring 2 clamps the mounting wall 12, and the forward and backward movement of the conductive spring 2 on the connector 1 is restricted.

[0041] Preferably, the conductive spring 2 and the conductive strip 6 are located on the same mounting surface. The side extension 25 has an inwardly inclined guide surface on the side facing the tail of the conductive spring 2. During assembly, the connector 1 guides the conductive spring 2 and the conductive strip 6 to abut against each other through the guide surface. The circuit board 5 is mounted along the assembly slot 203 of the housing 200 and may not be located on the same mounting surface as the conductive spring 2. The support leg 24 of the conductive spring 2 is bent before being inserted into the circuit board 5.

[0042] The circuit board 5 of the lamp 1000 is equipped with an LED chip 51. The lamp 1000 also includes a lampshade 7 positioned in the light-emitting direction of the LED chip 51. Optionally, the lampshade 7, side wall 202, and bottom surface 201 are integrally formed into a housing 200. A partition 8 is provided at the end of the housing 200 to isolate the circuit board 5 from the outside. Optionally, the partition 8 is provided with a mounting post that matches the mounting hole at the end of the circuit board 5, so that the partition 8 is fixedly mounted relative to the circuit board 5.

[0043] In use, to facilitate interconnection, a guide slope 213 is provided at the end of the snap-fit ​​connector 21. When the snap-fit ​​connector 21 is inserted through the elastic contact terminal 100, the guide slope 213 is first pressed inward by force, and the snap-fit ​​connectors 21 on both sides retract inward. After installation, the snap-fit ​​connector 21 remains open under the reset force of the elastic element 3, so that the conductive spring 2 can maintain a stable electrical connection when interconnected with the external lamp.

[0044] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A resilient contact terminal for the end of a lamp fixture, comprising a connector (1) adapted to be fitted and connected to the end of a housing (200) of the lamp fixture, wherein two conductive spring contacts (2) are spaced apart in the connector (1), characterized in that, The conductive spring (2) extends along the length of the housing (200). The length of the conductive spring (2) is greater than the length of the plug frame (1) and includes a snap-fit ​​connector (21) exposed in the plug frame (1). The snap-fit ​​connectors (21) of the two conductive springs (2) are configured to open and close relative to each other. An elastic element (3) abuts against the inner side of the snap-fit ​​connectors (21). The deformation recovery force of the elastic element (3) causes the snap-fit ​​connectors (21) to have a tendency to open outward. Two snap-fit ​​connectors (21) have recesses (211) formed on opposite sides along the width direction. The elastic element (3) abuts against the recesses (211) to open the snap-fit ​​connectors (21) outward. A relief groove (212) is formed extending from the recesses (211) toward the end away from the snap-fit ​​connectors (21) and is configured to provide a receiving space for the elastic element (3) when it is compressed and deformed. The elastic element (3) includes a bent portion (31) in the middle, which is configured to abut against the recess (211) of the snap connector (21). One end of the elastic element (3) is a support foot (32), which is configured to form a support point in the plug-in frame (1), and the other end is a movable foot (33), which is configured to move in the relief groove (212) with the elastic deformation of the elastic element (3). The elastic element (3) is configured to be able to open under force and to have a tendency to move the movable foot (33) toward the end of the support foot (32) under the deformation recovery force. The conductive spring (2) includes a fixed part (22) and a movable part (23). The clearance groove (212) includes one or more inclined surfaces extending from the snap connector (21) to the fixed part (22), so that the radial dimension of the movable part (23) is smaller than that of the fixed part (22).

2. The elastic contact terminal as described in claim 1, characterized in that, The fixed part (22) is fixedly installed in conjunction with the plug-in bracket (1), and the movable part (23) is connected between the fixed part (22) and the snap connector (21) along the length direction. The plug-in bracket (1) is provided with a movable gap for the movable part (23) so that the movable part (23) can swing along the width direction.

3. The elastic contact terminal as described in claim 1, characterized in that, The connector (1) includes a base plate (11) and a mounting wall (12). The base plate (11) extends along the length of the housing (200), and the conductive spring (2) is adapted to be mounted on the base plate (11). The mounting wall (12) is vertically arranged on both sides of the base plate (11) and is connected to the inside of the housing (200).

4. The elastic contact terminal as described in claim 3, characterized in that, A spacer rib (13) is provided on the substrate (11) and extends along the length of the housing (200). Two conductive springs (2) are installed on different sides of the spacer rib (13) and positioned between the spacer rib (13) and the mounting wall (12). An elastic element (3) abuts between the spacer rib (13) and the conductive spring (2).

5. The elastic contact terminal as described in claim 3, characterized in that, The connector (1) also includes a cover plate (4), which and the base plate (11) cooperate to cover and form a receiving space that isolates the two conductive springs (2) respectively, while providing a support point for the elastic element (3).

6. A strip light fixture, comprising a strip-shaped housing (200), an opening at one end of the housing (200) along its length, and a circuit board (5) fixedly mounted inside the housing (200), characterized in that, An elastic contact terminal as described in any one of claims 1-5 is installed along the end of the housing (200), the conductive spring (2) is electrically connected to the circuit board (5) inside the housing (200), and the snap-fit ​​connector (21) is exposed outside the housing (200).

7. The strip light fixture as described in claim 6, characterized in that, The tail of the conductive spring (2) includes a leg (24) extending along the length direction within the housing (200), and the end of the leg (24) of each conductive spring (2) is respectively embedded in the connection hole on the circuit board (5) to be electrically connected to the positive and negative lines of the circuit board (5).

8. The strip light fixture as described in claim 7, characterized in that, The housing (200) includes a bottom surface (201) and two side walls (202). An assembly groove (203) is provided on the inner side of the side wall (202). A plug strip (15) adapted to the assembly groove (203) is provided on the outer side of the plug frame (1). Each side assembly groove (203) includes a wire groove. A conductive strip (6) is assembled along the wire groove inside the housing (200). The middle part of the conductive spring (2) includes a side extension (25) that extends laterally and exposes the plug frame (1). After the plug frame (1) is assembled, the conductive spring (2) on each side is electrically connected through the side extension (25) and the conductive strip (6).

9. The strip light fixture as described in claim 8, characterized in that, The conductive spring (2) and the conductive strip (6) are located on the same mounting surface, and the side extension (25) has an inwardly inclined guide surface on the side facing the tail of the conductive spring (2).

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