Electrically conductive connecting sheet and lamp

Abstract

Electrically conductive connecting sheet, characterized in that it is connected between a printed circuit board (1) and an electrically conductive component (21) of a battery (2) and is designed as a sheet-shaped body (3), characterized in that the sheet-shaped body (3) comprises a curved section (31), a first connecting section (32), a second connecting section (33) and a contact section (34) which are connected one after the other, wherein the curved section (31) serves to bear against the electrically conductive component (21) of the battery (2), wherein an angle α is formed between the first connecting section (32) and the second connecting section (33), and wherein the contact section (34) serves to be electrically connected to the printed circuit board (1).

Description

TECHNICAL FIELD

[0001] The present invention relates to the technical field of electrically conductive connecting elements, in particular to an electrically conductive connecting sheet and a lamp. STATE OF THE ART

[0002] Currently, the electrically conductive connecting sheet is widely used in manufacturing technology, such as lamps and lanterns. As a key component of the internal circuit connection, the electrically conductive connecting sheet can establish a stable electrical connection between the power module, the light source module, and the control circuit.

[0003] For example, Chinese Utility Model Patent Application No. CN209133717U (Patent No. ZL201821850420.9) "An Electronic Connector and Lamps" specifies an electronic connector (i.e., an electrically conductive connecting sheet). The electronic connector includes a first electrically conductive elastic member and a second electrically conductive elastic member, wherein the first electrically conductive elastic member includes a first mounting sheet and a first connecting sheet connected by bending, and the second electrically conductive elastic member includes a second mounting sheet and a second connecting sheet connected by bending. The first connecting sheet and the second connecting sheet can be elastically bent with the corresponding mounting sheet, thereby establishing electrical connection with the electrically conductive structure to be connected by elastic interference.

[0004] However, the existing electrically conductive connecting sheet still has a relatively unstable structure. When attached to the lamp, during lamp transportation, lamp installation, or upon impact, the electrically conductive connecting sheet is prone to plastic deformation, resulting in the failure of the electrical conduction between the electrically conductive connecting sheet and the lamp.

[0005] For this reason, it is necessary to further improve the existing electrically conductive connecting sheet and its internal structure of the lamp. CONTENT OF THE PRESENT INVENTION

[0006] The first technical problem to be solved by the present invention is to provide an electrically conductive connecting sheet having a stable electrical connection with respect to the prior art.

[0007] The second technical problem to be solved by the present invention is to provide a lamp having the above electrically conductive connecting sheet so that the electrical connection between the battery and the circuit board of the lamp is reliable and stable.

[0008] In order to solve the above first technical problem, the present invention adopts the following technical solution: an electrically conductive connecting sheet connected between a circuit board and an electrically conductive component of a battery and formed as a sheet-shaped body, the sheet-shaped body comprising a curved portion, a first connecting portion, a second connecting portion, and a contact portion connected sequentially, the curved portion serving to abut against the electrically conductive component of the battery, an angle α being formed between the first connecting portion and the second connecting portion, and the contact portion serving to be electrically connected to the circuit board.

[0009] In order to distribute the stress, it is preferable that the angle α between the first connecting portion and the second connecting portion be 80° to 90°. An angle α of 80°~90° is formed between the first connecting portion and the second connecting portion. On the one hand, this allows the electrically conductive connecting sheet to evenly distribute the stress when subjected to force and avoid concentrated deformation; on the other hand, it can optimize the elasticity and contact pressure of the electrically conductive connecting sheet to ensure long-term conductive reliability. If the angle α is less than 80°, local stress concentration is easy to occur and it is easy to break during deformation; if the angle α is more than 90°, the electrically conductive connecting sheet occupies a larger space, and the overall compactness of the structure is poor.

[0010] Preferably, the first connecting portion and the second connecting portion are arranged in an L-shape and connected in a rounded manner, and the angle α between the first connecting portion and the second connecting portion is 85°. Here, the angle α between the first connecting portion and the second connecting portion is set to 85°, which is favorable for punching and forming shapes. At the same time, the use of a rounded smooth connection transition between the first connecting portion and the second connecting portion can evenly distribute stress and avoid local plastic deformation; at the same time, the rounded smooth connection helps to evenly distribute current and improve heat dissipation.

[0011] To avoid interference with the battery, preferably, the first connecting portion comprises a first segment having a width of W1 and a second segment having a width of W2, where W1 is smaller than W2, and where the first segment is adjacent to the curved portion while the second segment is adjacent to the second connecting portion. By setting the width of the first segment smaller than the width of the second segment, interference between the first segment and the mounting part of the electrically conductive component of the battery is prevented, thereby not compromising the stability of the electrical connection between the electrically conductive connecting sheet and the electrically conductive component of the battery, while simultaneously avoiding damage to the battery.

[0012] Preferably, W1=(0.7-0.9)*W2. If W1<0.7W2, the width of the first segment is too small at this time. On the one hand, this makes the resistance of the first segment too large. When the current passes through, the local heating is too high, which accelerates metal oxidation. On the other hand, the first segment is prone to plastic deformation when the electrically conductive connecting sheet is inserted or subjected to violent vibration, making it difficult to restore to its original state. If W1>0.9W2, the width of the first segment is too large, and the first segment is prone to interference with the mounting part of the electrically conductive component of the battery, resulting in unstable electrical connection between the electrically conductive connecting sheet and the electrically conductive component of the battery, and even battery damage.

[0013] In order to maintain the uniformity of current and force, preferably the width of the curved portion is equal to the width W1 of the first segment of the first connecting portion, while the width of the second connecting portion is equal to the width W2 of the second segment of the first connecting portion. Here, the curved portion and the first segment, the second connecting portion and the second segment are all the same width, which can evenly distribute the current between the two and avoid local heating caused by local constriction of the electrically conductive connecting sheet; At the same time, the equal width design makes the elastic deformation between the curved portion and the first segment, the second connecting portion and the second segment more uniform, and also facilitates processing and manufacturing.

[0014] To improve stability and facilitate processing, it is preferable that the curved portion, the first connecting portion, the second connecting portion, and the contact portion have the same thickness T. Here, the thickness of the curved portion, the first connecting portion, the second connecting portion, and the contact portion is uniform from bottom to top, which allows the entire electrically conductive connecting sheet to deform evenly when subjected to external forces, thereby improving overall stability and reliability. Second, the operator can directly use the same thickness of the material in the mold to obtain the electrically conductive connecting sheet, and processing is more convenient.

[0015] To realize the circuit conduction, the contact portion is preferably a welded sheet formed by extending one end of the second connecting portion in a direction opposite to the first connecting portion. The welded sheet is electrically connected to the circuit board, thereby achieving stable circuit conduction between the battery, the electrically conductive connecting sheet, and the circuit board.

[0016] To improve the stability of the electrical connection, preferably, there are a plurality of welded sheets, each of the welded sheets extending from a corresponding edge of one end of the second connecting portion. By arranging a plurality of welded sheets, each of the electrically conductive connecting sheets forms a plurality of contacts connected to the circuit board, so that in the event of a single point of failure, the remaining contacts can still maintain the electrical connection, thereby maintaining the reliability of the electrical connection. Moreover, the plurality of contacts are in simultaneous contact with the circuit board, which can effectively distribute the stress, and the electrically conductive connecting sheet is not easily broken under the vibration environment.

[0017] To facilitate heat dissipation, a through-hole is preferably formed on the second connecting portion through its thickness and adjacent to one end of the second connecting portion. The current flowing through the electrically conductive connecting sheet generates a certain amount of heat, and by providing through-holes on the second connecting portion, additional heat dissipation can be achieved, thereby preventing the electrically conductive connecting sheet from failing due to excessive heating.

[0018] In order to solve the above second technical problem, the present invention adopts the following technical solution: a lamp comprising a lamp housing, a luminous body, a circuit board for driving the luminous body, a battery, and an electrically conductive connecting sheet connected between an electrically conductive component of the battery and an input end of the circuit board, wherein the electrically conductive connecting sheet is an above electrically conductive connecting sheet.

[0019] To improve the reliability of electrical connection, preferably there are a plurality of electrically conductive connecting sheets, each of the electrically conductive connecting sheets being spaced along a circumferential direction of the battery so that the curved portions of the electrically conductive connecting sheets collectively enclose a clamping portion with a certain clamping force on the battery. When two electrically conductive connecting sheets are provided, both terminals of the battery (the two electrically conductive components as positive and negative terminals) can be electrically connected to the circuit board using the respective connecting sheets, which can improve the convenience of connection. When three or more electrically conductive connecting sheets are provided, one of the terminals of the battery can accommodate at least two sheet-shaped bodies to establish electrical connection with the circuit board.If one or more blades fail, the remaining blades can continue to function, ensuring the reliability of the electrical connection between the circuit board and the battery. At the same time, the use of multiple blades has its own elasticity and collectively forms a certain clamping force, so that the product is not easy to fail the electrical connection after the drop test, thus ensuring the stability of the electrical connection.

[0020] Compared with the prior art, the present invention has the following advantages: the electrically conductive connecting sheet is formed as a sheet-shaped body, the sheet-shaped body including a curved portion, a first connecting portion, a second connecting portion, and a contact portion connected sequentially, forming an angle α between the first connecting portion and the second connecting portion. Therefore, the electrically conductive connecting sheet has good overall elasticity, and stress can be evenly distributed under the action of external forces or after dropping and impact. At the same time, the sheet-shaped body can also reliably contact the electrically conductive component of the battery and the circuit board with its inherent elasticity to maintain the stability of the electrical connection.The electrically conductive connecting sheet of the present invention is used in the lamp, under a certain clamping force formed by the curved portions of the plurality of electrically conductive connecting sheets, the electrical connection is reliable, can be smooth for the luminaire stable power supply. SHORT DESCRIPTION OF THE DRAWING Fig. 1 shows a schematic representation of the three-dimensional structure of an embodiment of the present invention when connected between a battery and a circuit board of a lamp; Fig. 2 shows a schematic representation of the three-dimensional structure of an electrically conductive connecting sheet of the embodiment of the present invention; Fig. 3 shows a schematic representation of Fig. 2 in a front view; Fig. 4 shows a schematic representation of Fig. 2 in a side view; Fig. Figure 5 shows a three-dimensional decomposed schematic representation of Fig. 1.

[0021] List of reference symbols: 1. printed circuit board; 11. insertion hole; 2. battery; 21. electrically conductive component; 22. battery case; 23. recess; 3. leaf-shaped body; 31. curved portion; 32. first connecting portion; 321. first segment; 322. second segment; 33. second connecting portion; 331. through hole; 34. contact portion. DETAILED DESCRIPTION

[0022] In the following, the present invention is described in more detail in connection with the attached drawings and embodiments.

[0023] A preferred embodiment of the present invention is shown in the Fig. 1 to 5. The electrically conductive connecting sheet is designed as a sheet-shaped body 3 and connected between a circuit board 1 and an electrically conductive component 21 of a battery 2, wherein the sheet-shaped body 3 comprises a curved portion 31, a first connecting portion 32, a second connecting portion 33 and a contact portion 34 which are connected one after the other, wherein the curved portion 31 serves to abut against the electrically conductive component 21 of the battery 2, wherein an angle α is formed between the first connecting portion 32 and the second connecting portion 33, and wherein the contact portion 34 serves to be electrically connected to the circuit board 1.

[0024] As in Fig. As shown in Figure 4, an angle α of 80°~90° is formed between the first connecting portion and the second connecting portion. The purpose is, on the one hand, to allow the electrically conductive connecting sheet to evenly distribute stress when subjected to force and avoid concentrated deformation, and, on the other hand, to optimize the elasticity and contact pressure of the electrically conductive connecting sheet to ensure long-term conductive reliability. When the angle α is less than 80°, local stress concentration is easy to occur and it is prone to breakage during deformation; when the angle α is more than 90°, the electrically conductive connecting sheet occupies a larger space, and the overall compactness of the structure is poor.Preferably, in the embodiment, the first connecting portion and the second connecting portion are arranged at an angle of 85° and in an L-shape, which is convenient for punching and forming shapes. At the same time, the use of a rounded, smooth connection transition between the first connecting portion and the second connecting portion can evenly distribute stress and prevent local plastic deformation; at the same time, it facilitates even current distribution and improves heat dissipation.

[0025] As in Fig. 2 and Fig. 3, further, the first connecting portion 32 is formed as a structure with two segments of unequal width, i.e., the first connecting portion 32 includes a first segment 321 having a width of W1 and a second segment 322 having a width of W2, where W1=(0.7-0.9)*W2, where W1 is smaller than W2, and where the first segment 321 is adjacent to the curved portion 31, while the second segment 322 is adjacent to the second connecting portion 33. In the figure, since the outer peripheral wall of the upper end of the battery case 22 is partially recessed inward along a circumferential direction to form a recess 23, the electrically conductive component 21 of the battery 2 (which is connected to the corresponding pole of the battery 2) is formed as a conductive contact partially exposed in the recess 23.A first segment 321 of the first connecting portion 32 is provided in the recess 23 such that the curved portion 31 connected to the first segment 321 abuts the electrically 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 recess 23 of the battery 2. When W1 < 0.7W2, the width of the first segment 321 is too small at this time, which, on the one hand, makes the resistance of the first segment 321 too large, and when the current passes through, the local heating is too high, which accelerates metal oxidation. On the other hand, the first segment 321 is prone to plastic deformation when the electrically conductive connecting sheet is inserted or subjected to violent vibration, making it difficult to restore to its original state.If W1>0.9W2, the width of the first segment 321 is too large, and the first segment 321 is likely to interfere with the side wall of the recess 32 of the battery 2 when the first segment 321 is provided in the recess 32 of the battery case 22, resulting in the electrical connection between the electrically conductive connecting sheet and the battery 2 being unstable and even damaging the battery 2. Preferably, W1=0.8W2 in this embodiment.

[0026] As in Fig. 2 and Fig. 3, the width of the curved portion 31 is equal to the width W1 of the first segment 321 of the first connecting portion 31, and the width of the second connecting portion 33 is equal to the width W2 of the second segment 321 of the first connecting portion 31. The purpose of the equal width design is: 1. The current between the two can be evenly distributed, and local heating caused by local narrowing of the electrically conductive connecting sheet can be avoided; 2. At the same time, the elastic deformation between the curved portion 31 and the first segment 321, the second connecting portion 33, and the second segment 322 becomes more uniform, and also facilitates processing and manufacturing.

[0027] In addition, in this embodiment, the thickness T of the curved portion 31, the first connecting portion 32, the second connecting portion 33 and the contact portion 34 is the same (As in Fig. 4), which allows the entire electrically conductive connecting sheet to deform evenly when subjected to external forces, thereby improving overall stability and reliability. Second, the operator can directly use the same thickness of the material in the mold to obtain the electrically conductive connecting sheet, and processing is more convenient.

[0028] As in Fig. 1 and Fig. 2, the contact portion 34 is a welded sheet formed by extending one end of the second connecting portion 33 in a direction opposite to the first connecting portion 32. The welded sheet is inserted into the insertion hole 11 of the circuit board 1 and, if necessary, welded and fixed to achieve electrical connection with the circuit board 1, so that stable conduction of the circuit between the battery 2, the electrically conductive connecting sheet, and the circuit board 1 is achieved. In this embodiment, three welded sheets are arranged (as shown in Fig. 5), which are respectively arranged on the left, right, and front sides of the end portion of the second connecting portion, whereby each of the electrically conductive connecting sheets forms three contacts connected to the circuit board 1. In the event of a single point of failure, the remaining contacts can still maintain the electrical connection, thereby maintaining the reliability of the electrical connection. Moreover, the plurality of contacts are in simultaneous contact with the circuit board 1, which can effectively disperse the stress, and the electrically conductive connecting sheet is not easy to break under the vibration environment.Since the current flowing through the electrically conductive connecting sheet generates some heat, in this embodiment, a through-hole 331 is formed on the second connecting portion 33 through its thickness and adjacent to one end of the second connecting portion 33. This can achieve additional heat dissipation, thereby preventing the electrically conductive connecting sheet from failing due to excessive heating.

[0029] As in Fig. 1 and Fig.5, the lamp of this embodiment includes a lamp housing (not shown), a lamp body (not shown), a circuit board 1 for driving the lamp body, a battery 2, and an electrically conductive connecting sheet connected between an electrically conductive component 21 of the battery 2 and an input end of the circuit board 1. The electrically conductive connecting sheet is an electrically conductive connecting sheet adopting the above structure and the number is three. Each of the electrically conductive connecting sheets is spaced apart along a circumferential direction of the battery 2 so that the curved portions 31 of the electrically conductive connecting sheets collectively enclose a clamping portion with a certain clamping force on the battery.At this time, the curved portion 31 of each electrically conductive connecting sheet is bulged in a direction facing the electrically conductive component 21 of the battery 2 and, due to its inherent elasticity, always tends to fit tightly against the electrically conductive component 21 of the battery 2. The advantage of this configuration is that the contact area with the electrically conductive component 21 of the battery 2 can be increased, and the force on the battery 2 is uniform. At the same time, for the electrically conductive component 21 of one terminal of the battery 2, if two electrically conductive connecting sheets are used to electrically connect to the circuit board 1, if one sheet-shaped body 3 thereof fails, the remaining sheet-shaped bodies 3 can continue to function, thereby ensuring the reliability of the electrical connection between the circuit board 1 and the battery 2.At the same time, the use of a plurality of sheet-shaped bodies 3 has its own elasticity and collectively forms a certain clamping force, so that the product is not easy to fail the electrical connection after the drop test, thus ensuring the stability of the electrical connection. Of course, the number of electrically conductive connecting sheets in the lamp is not limited to three, but two can also be used; or one can be selected; or four, and all of these possibilities are within the scope of the present invention. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] CN 209133717U

[0003] Cited non-patent literature

[0000] ZL201821850420.9

[0003]

Claims

[1] Electrically conductive connecting sheet, characterized by that is connected between a circuit board (1) and an electrically conductive component (21) of a battery (2) and is designed as a sheet-shaped body (3), characterized by in that the sheet-shaped body (3) comprises a curved section (31), a first connecting section (32), a second connecting section (33) and a contact section (34) which are connected one after the other, wherein the curved section (31) serves to bear against the electrically conductive component (21) of the battery (2), an angle α being formed between the first connecting section (32) and the second connecting section (33), and wherein the contact section (34) serves to be electrically connected to the printed circuit board (1). [2] Electrically conductive connecting sheet according to claim 1, characterized bythat the angle α between the first connecting section (32) and the second connecting section (33) is 80° to 90°. [3] Electrically conductive connecting sheet according to claim 2, characterized by that the first connecting portion (32) and the second connecting portion (33) are arranged in an L-shape and are connected in a rounded manner, and wherein the angle α between the first connecting portion (32) and the second connecting portion (33) is 85°. [4] Electrically conductive connecting sheet according to claim 1, characterized by that the first connecting portion (32) comprises a first segment (321) having a width of W1 and a second segment (322) having a width of W2, wherein W1 is smaller than W2 and wherein the first segment (321) adjoins the curved portion (31), while the second segment (322) adjoins the second connecting portion (33). [5] Electrically conductive connecting sheet according to claim 4, characterized bythat W1 = (0.7 to 0.9)*W2. [6] Electrically conductive connecting sheet according to claim 4, characterized by that the width of the curved portion (31) is equal to the width W1 of the first segment (321) of the first connecting portion (32), while the width of the second connecting portion (33) is equal to the width W2 of the second segment (322) of the first connecting portion (32). [7] Electrically conductive connecting sheet according to claim 1, characterized by that the curved portion (31), the first connecting portion (32), the second connecting portion (33) and the contact portion (34) have an equal thickness T. [8] Electrically conductive connecting sheet according to claim 1, characterized by that the contact portion (34) is a welded sheet formed by extending one end of the second connecting portion (33) in a direction opposite to the first connecting portion (32). [9] Electrically conductive connecting sheet according to claim 8, characterized by that there are a plurality of said welded sheets, each of said welded sheets extending from a corresponding edge of one end of said second connecting portion (33). [10] A lamp comprising a lamp housing, a luminous body, a circuit board (1) for operating the luminous body, a battery (2) and an electrically conductive connecting sheet connected between an electrically conductive component (21) of the battery (2) and an input end of the circuit board (1), characterized by that the electrically conductive connecting sheet is an electrically conductive connecting sheet according to one of claims 1 to 9.

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