Conductive tab and luminaire

Abstract

The utility model relates to a kind of electrically conductive connecting pieces, connect between the electrically conductive component of circuit board and battery, design into sheet body, the sheet body includes sequentially connected arc portion, first connecting part, second connecting part and contact portion, the arc portion is used to abut on the electrically conductive component of battery, included angle α is formed between the first connecting part and second connecting part, the contact portion is used to be electrically connected with the circuit board.Simultaneously disclosed is the luminaire with the electrically conductive connecting piece.The utility model electrically conductive connecting piece, overall elasticity is good, stress can be evenly dispersed under external force or after drop impact, meanwhile sheet body can be reliably contacted with the electrically conductive component of battery and circuit board by its elasticity, so as to maintain the stability of electric connection.Especially such electrically conductive connecting piece is applied in luminaire, electric connection reliability is good, can achieve the purpose of smoothly stable power supply for luminous body.

Description

Technical Field

[0001] This utility model relates to the field of conductive connecting elements, specifically to a conductive connecting sheet and a lamp. Background Technology

[0002] Currently, conductive connectors are widely used in the manufacturing technology of lighting fixtures and other fields. As a key component for internal circuit connections, they can achieve stable electrical conduction between power modules, light source modules and control circuits.

[0003] For example, a Chinese utility model patent with patent number ZL201821850420.9 (publication number CN209133717U) entitled "An Electronic Connector and a Lighting Fixture" discloses an electronic connector (i.e., a conductive connecting piece). The electronic connector includes a first conductive elastic element and a second conductive elastic element. The first conductive elastic element includes a first mounting piece and a first connecting piece that are bent and connected. The second conductive elastic element includes a second mounting piece and a second connecting piece that are bent and connected. The first mounting piece of the first conductive elastic element and the second mounting piece of the second conductive elastic element are respectively mounted on the first sidewall and the second sidewall of an insulating body. The first connecting piece and the second connecting piece can be elastically bent with the corresponding mounting piece, thereby realizing an electrical connection with the conductive structure to be connected by elastic compression.

[0004] However, existing conductive connectors still exhibit relatively unstable structures. When applied to lighting fixtures, they are prone to plastic deformation during transportation, installation, or impact from drops, leading to electrical failure between the connector and the fixture.

[0005] Therefore, further improvements are needed to the existing conductive connectors and the internal structure of the lamps. Utility Model Content

[0006] The first technical problem to be solved by this utility model is to provide a conductive connecting piece with good electrical connection stability in view of the above-mentioned existing technology.

[0007] The second technical problem to be solved by this utility model is to provide a lamp with the above-mentioned conductive connecting piece, which makes the electrical connection between the battery and the circuit board of the lamp reliable and stable.

[0008] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the conductive connecting piece is connected between the circuit board and the conductive components of the battery, and is designed as a sheet-like body. The sheet-like body includes an arc-shaped part, a first connecting part, a second connecting part and a contact part connected in sequence. The arc-shaped part is used to abut against the conductive components of the battery. An included angle α is formed between the first connecting part and the second connecting part. The contact part is used to electrically connect with the circuit board.

[0009] To disperse stress, preferably, the included angle α between the first and second connecting parts is 80° to 90°. This 80°–90° angle α between the first and second connecting parts allows for more even stress distribution on the conductive connector under load, preventing concentrated deformation. Furthermore, it optimizes the elasticity and contact pressure of the conductive connector, ensuring long-term conductive reliability. When the included angle α is less than 80°, localized stress concentration is likely, increasing the risk of breakage during deformation. When the included angle α is greater than 90°, the conductive connector occupies a larger space, resulting in a less compact overall structure.

[0010] Furthermore, the first connecting portion and the second connecting portion are arranged in an "L" shape and are smoothly connected, with an included angle α of 85° between them. Setting the included angle α between the first connecting portion and the second connecting portion to 85° facilitates die stamping; simultaneously, the smooth transition between the first connecting portion and the second connecting portion can evenly distribute stress and avoid localized plastic deformation; furthermore, the smooth connection helps to evenly distribute current and improve heat dissipation.

[0011] To avoid interference with the battery, preferably, the first connecting portion includes a first segment with a width of W1 and a second segment with a width of W2, where W1 is smaller than W2, and the first segment is adjacent to the arc-shaped portion, and the second segment is adjacent to the second connecting portion. Setting the width of the first segment to be smaller than the width of the second segment can prevent interference between the first segment and the mounting location of the conductive component of the battery, thereby avoiding affecting the stability of the electrical connection between the conductive connecting piece and the conductive component of the battery, and also avoiding damage to the battery.

[0012] Furthermore, W1 = (0.7~0.9)W2. When W1 < 0.7W2, the width of the first segment is too small. On the one hand, this results in excessively high resistance in the first segment, leading to excessively high local temperature rise when current flows through, accelerating metal oxidation. On the other hand, when the conductive connector is being inserted, removed, or subjected to vibration, the first segment is prone to plastic deformation and is difficult to restore to its original shape. When W1 > 0.9W2, the width of the first segment is too large, making it prone to interference with the mounting points of the battery's conductive components. This results in unstable electrical connections between the conductive connector and the battery's conductive components, and may even damage the battery.

[0013] To maintain uniformity of current and force, preferably, the width of the arc-shaped portion is the same as the width W1 of the first segment of the first connecting portion, and the width of the second connecting portion is the same as the width W2 of the second segment of the first connecting portion. The fact that the arc-shaped portion, the first segment, the second connecting portion, and the second segment are all set to the same width allows for a uniform current distribution between them, avoiding localized heating caused by localized narrowing of the conductive connecting piece. Simultaneously, the equal width design ensures more uniform elastic deformation between the arc-shaped portion, the first segment, the second connecting portion, and the second segment, and also facilitates manufacturing.

[0014] To improve stability and facilitate processing, it is preferable that the thickness T of the arc-shaped portion, the first connecting portion, the second connecting portion, and the contact portion are the same. Specifically, maintaining a consistent thickness from bottom to top among the arc-shaped portion, the first connecting portion, the second connecting portion, and the contact portion allows the entire conductive connecting piece to deform uniformly under external force, thereby improving overall stability and reliability. Furthermore, operators can directly use materials of the same thickness to stamp and form the conductive connecting piece in a mold, making processing more convenient.

[0015] To ensure circuit continuity, preferably, the contact portion is a solder piece extending from one end of the second connection portion away from the first connection portion. This solder piece is electrically connected to the circuit board, thereby achieving stable circuit continuity between the battery, the conductive connection piece, and the circuit board.

[0016] To improve the reliability of the electrical connection, preferably, there are multiple welding tabs, each extending from a corresponding edge at one end of the second connection portion. By providing multiple welding tabs, each conductive connection tab forms multiple contacts that connect to the circuit board. In the event of a single-point failure, the remaining contacts can still maintain the electrical connection, thereby ensuring the reliability of the electrical connection. Furthermore, the simultaneous contact of multiple contacts with the circuit board can effectively disperse stress, making the conductive connection tab less prone to breakage under vibration.

[0017] To facilitate heat dissipation, preferably, the second connecting portion has a through hole extending through its thickness and adjacent to one end of the second connecting portion. The current flowing through the conductive connecting piece generates heat; by providing a through hole extending through its thickness in the second connecting portion, auxiliary heat dissipation can be achieved, thereby preventing the conductive connecting piece from failing due to excessive temperature rise.

[0018] The technical solution adopted by this utility model to solve the second technical problem mentioned above is as follows: a lamp, including a lamp housing, a light-emitting body, a circuit board for driving the light-emitting body, a battery, and a conductive connecting piece connecting the conductive component of the battery and the input end of the circuit board, characterized in that: the conductive connecting piece is the aforementioned conductive connecting piece.

[0019] To improve the reliability of the electrical connection, preferably, there are multiple conductive connecting pieces, which are spaced apart circumferentially along the battery so that the arc-shaped portions of each conductive connecting piece together form a clamping part that provides a certain clamping force to the battery. When there are two conductive connecting pieces, both poles of the battery (the two conductive components serving as positive and negative poles) can be electrically connected to the circuit board using their respective sheet-like bodies, improving connection convenience. When there are three or more conductive connecting pieces, at least one pole of the battery can be electrically connected to the circuit board using at least two sheet-like bodies. In this case, if one or more sheet-like bodies fail, the remaining sheet-like bodies can still maintain their function, thus ensuring the reliability of the electrical connection between the circuit board and the battery. Simultaneously, utilizing the inherent elasticity of the multiple sheet-like bodies to collectively form a certain clamping force makes the electrical connection less prone to failure after drop testing, thereby ensuring the stability of the electrical connection.

[0020] Compared with existing technologies, the advantages of this invention are as follows: By setting the conductive connecting piece into a sheet-like body, and the sheet-like body including an arc-shaped portion, a first connecting portion, a second connecting portion, and a contact portion connected in sequence, with an included angle α between the first connecting portion and the second connecting portion, the conductive connecting piece has good overall elasticity. Under external force or after being impacted by a drop, the stress can be evenly distributed. At the same time, the sheet-like body can reliably contact the conductive components of the battery and the circuit board due to its own elasticity, thereby maintaining the stability of the electrical connection. Especially when such a conductive connecting piece is applied to a lamp, the electrical connection reliability is better under the certain clamping force formed by the arc-shaped portions of multiple conductive connecting pieces, which can achieve the purpose of smoothly and stably supplying power to the light-emitting element. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the connection between the battery and the circuit board of the lamp according to an embodiment of the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of the conductive connecting piece in an embodiment of the present invention;

[0023] Figure 3 for Figure 2 A frontal view diagram;

[0024] Figure 4 for Figure 2 A side view diagram;

[0025] Figure 5 for Figure 1 A three-dimensional exploded diagram.

[0026] In the figure: 1. Circuit board; 11. Socket; 2. Battery; 21. Conductive component; 22. Battery casing; 23. Groove; 3. Sheet; 31. Arc-shaped part; 32. First connecting part; 321. First segment; 322. Second segment; 33. Second connecting part; 331. Through hole; 34. Contact part. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] like Figures 1 to 5 The diagram shows the preferred embodiment of this utility model. The conductive connecting piece is designed as a sheet-like body 3 and is connected between the circuit board 1 and the conductive component 21 of the battery 2. The sheet-like body 3 includes an arc-shaped portion 31, a first connecting portion 32, a second connecting portion 33, and a contact portion 34 connected in sequence. The arc-shaped portion 31 is used to abut against the conductive component 21 of the battery 2. An included angle α is formed between the first connecting portion 32 and the second connecting portion 33. The contact portion 34 is used to electrically connect with the circuit board 1.

[0029] refer to Figure 4 The included angle α between the first connecting part 32 and the second connecting part 33 is 80° to 90°. The purpose of setting the included angle α is: first, to ensure that the conductive connecting piece is evenly distributed under force, avoiding concentrated deformation; second, to optimize the elasticity and contact pressure of the conductive connecting piece, ensuring long-term conductive reliability. When the included angle α is less than 80°, local stress concentration is likely to occur, and breakage is likely to occur during deformation. When the included angle α is greater than 90°, the conductive connecting piece occupies a large space, and the overall structure is less compact. In this embodiment, the first connecting part 32 and the second connecting part 33 are preferably set in an "L" shape with an included angle α of 85°. At this time, die stamping is convenient. At the same time, the smooth connection transition between the first connecting part 32 and the second connecting part 33 can evenly distribute stress, avoid local plastic deformation, and also help to evenly distribute current and improve heat dissipation.

[0030] refer to Figure 2 and Figure 3Further optimization involves designing the first connecting portion 32 as a two-segment structure with unequal widths. Specifically, the first connecting portion 32 includes a first segment 321 with a width of W1 and a second segment 322 with a width of W2, where W1 = (0.7~0.9)W2. The first segment 321 is adjacent to the arc-shaped portion 31, and the second segment 322 is adjacent to the second connecting portion 33. In the figure, a groove 23 is formed by a partial inward recess along the circumferential direction on the outer peripheral wall of the upper end of the battery casing 22. The conductive component 21 of the battery 2 (connected to the corresponding pole of the battery 2) is designed as a conductive contact piece partially exposed in the groove 23. The first segment 321 of the first connecting portion 32 is disposed within this groove 23, allowing the arc-shaped portion 31 connected to the first segment 321 to abut against the conductive component 21 of the battery 2. The width W1 of the first segment 321 is narrower than that of the second segment 322 to avoid interference with the sidewall of the groove 23 of the battery 2. When W1 < 0.7W2, the width of the first segment 321 is too small, which on the one hand... If the resistance of the first segment 321 is too high, the local temperature will rise too high when current passes through, accelerating metal oxidation. On the other hand, when the conductive connecting piece is being inserted or removed or subjected to vibration, the first segment 321 is prone to plastic deformation and is not easy to restore its original shape. When W1 > 0.9W2, the width of the first segment 321 is too large. When the first segment 321 is set in the groove 23 of the battery housing 22, it is easy to interfere with the side wall of the groove 23 of the battery 2, which will lead to unstable electrical connection between the conductive connecting piece and the battery 2, and may even damage the battery 2. Therefore, in this embodiment, W1 = 0.8W2 is preferred.

[0031] refer to Figure 2 and Figure 3 The width of the arc-shaped portion 31 is the same as the width W1 of the first segment 321 of the first connecting portion 32, and the width of the second connecting portion 33 is the same as the width W2 of the second segment 322 of the first connecting portion 32. The purpose of the equal width design is: first, to make the current between the two evenly distributed, avoiding local heating caused by the local narrowing of the conductive connecting piece; second, to make the elastic deformation between the arc-shaped portion 31 and the first segment 321, and the second connecting portion 33 and the second segment 322 more uniform. At the same time, such a structure is also beneficial for processing.

[0032] Furthermore, in this embodiment, the thickness T of the arc-shaped portion 31, the first connecting portion 32, the second connecting portion 33, and the contact portion 34 is the same (see reference). Figure 4 This allows the entire conductive connector to deform uniformly when subjected to external force, thereby improving overall stability and reliability. Secondly, operators can directly use materials of the same thickness to stamp and form conductive connectors in molds, making processing more convenient.

[0033] refer to Figure 1 and Figure 2The contact portion 34 is a welding piece extending from one end of the second connecting portion 33 away from the first connecting portion 32. This welding piece is inserted into the socket 11 of the circuit board 1 and is then welded in place when necessary to achieve electrical connection with the circuit board 1. This ensures stable conduction of the circuit between the battery 2, the conductive connecting piece, and the circuit board 1. In this embodiment, three welding pieces are provided (see reference). Figure 5 The conductive connecting pieces are respectively disposed on the left, right, and front sides of the end of the second connecting portion 33, so that each conductive connecting piece forms three contacts that connect to the circuit board 1. In the event of a single-point failure, the remaining contacts can still maintain the electrical connection, thereby maintaining the reliability of the electrical connection. In addition, multiple contacts simultaneously contacting the circuit board 1 can effectively disperse stress, and the conductive connecting pieces are not prone to breakage under vibration. Furthermore, since the current passing through the conductive connecting piece generates a certain amount of heat, this embodiment has a through hole 331 that penetrates its thickness and is adjacent to one end of the second connecting portion 33, thereby providing auxiliary heat dissipation and preventing the conductive connecting piece from failing due to excessive temperature rise.

[0034] refer to Figure 1 and Figure 5 The lamp in this embodiment includes a lamp housing (not shown in the figure), a light-emitting element (not shown in the figure), a circuit board 1 that drives the light-emitting element, a battery 2, and a conductive connecting piece connecting the conductive component 21 of the battery 2 and the input terminal of the circuit board 1. The conductive connecting piece adopts the above-described structure and there are three of them. Each conductive connecting piece is distributed circumferentially along the battery 2, such that the arc-shaped portion 31 of each conductive connecting piece together forms a clamping portion that has a certain clamping force on the battery 2. At this time, the arc-shaped portion 31 of each conductive connecting piece arches towards the conductive component 21 of the battery 2. Utilizing its own elasticity, it always tends to press tightly against the conductive component 21 of the battery 2. The advantage of this arrangement is that it can increase the contact area between the conductive component 21 of the battery 2 and make the battery 2 be subjected to uniform force. Meanwhile, for the conductive component 21 of one pole of battery 2, when two conductive connecting pieces are used to electrically connect to circuit board 1, if one of the pieces 3 fails, the remaining piece 3 can still maintain its function, thus ensuring the reliability of the electrical connection between circuit board 1 and the conductive component 21 of battery 2. Furthermore, by utilizing the elasticity of multiple pieces 3 and forming a clamping force, the electrical connection is less likely to fail after a drop test, thus ensuring the stability of the electrical connection. Of course, the number of conductive connecting pieces in the lamp is not limited to three; two, one, or four can also be used, all of which are within the protection scope of this utility model.

Claims

1. A conductive connecting piece, connected between a circuit board (1) and a conductive component (21) of a battery (2), designed as a sheet-like body (3), characterized in that: The sheet-like body (3) includes an arc-shaped portion (31), a first connecting portion (32), a second connecting portion (33), and a contact portion (34) connected in sequence. The arc-shaped portion (31) is used to abut against the conductive component (21) of the battery (2). An included angle α is formed between the first connecting portion (32) and the second connecting portion (33). The contact portion (34) is used to electrically connect with the circuit board (1).

2. The conductive connecting piece according to claim 1, characterized in that: The included angle α between the first connecting part (32) and the second connecting part (33) is 80° to 90°.

3. The conductive connector according to claim 2, characterized in that: The first connecting part (32) and the second connecting part (33) are arranged in an "L" shape and are smoothly connected. The included angle α between the first connecting part (32) and the second connecting part (33) is 85°.

4. The conductive connector according to claim 1, characterized in that: The first connecting portion (32) includes a first segment (321) with a width of W1 and a second segment (322) with a width of W2, wherein W1 is smaller than W2, and the first segment (321) is adjacent to the arc-shaped portion (31), and the second segment (322) is adjacent to the second connecting portion (33).

5. The conductive connecting piece according to claim 4, characterized in that: The W1 = (0.7~0.9)W2.

6. The conductive connector according to claim 4, characterized in that: The width of the arc-shaped portion (31) is the same as the width W1 of the first segment (321) of the first connecting portion (32), and the width of the second connecting portion (33) is the same as the width W2 of the second segment (322) of the first connecting portion (32).

7. The conductive connector according to claim 1, characterized in that: The thickness T of the arc-shaped portion (31), the first connecting portion (32), the second connecting portion (33), and the contact portion (34) is the same.

8. The conductive connector according to claim 1, characterized in that: The contact portion (34) is a welding piece that extends from one end of the second connecting portion (33) in a direction away from the first connecting portion (32).

9. The conductive connecting piece according to claim 8, characterized in that: There are multiple welding pieces, each of which extends from the corresponding edge of one end of the second connecting portion (33).

10. A lamp, comprising a lamp housing, a light-emitting element, a circuit board (1) for driving the light-emitting element, a battery (2), and a conductive connecting piece connecting a conductive component (21) of the battery (2) and an input terminal of the circuit board (1), characterized in that: The conductive connecting piece is the conductive connecting piece as described in any one of claims 1 to 9.

Images