Plug-in type optocoupler lead frame
By designing the slot and socket width differences of the plug-in optocoupler lead frame and using multiple plug-in points, the problems of complex assembly and unstable connection of traditional optocoupler lead frames are solved, achieving efficient and stable optocoupler assembly and shock resistance.
Patent Information
- Application Number
- CN202520235764.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-02-14
AI Technical Summary
Traditional optocoupler lead frames are complex to assemble, resulting in low production efficiency and unstable electrical connections that are prone to loosening or poor contact, affecting the normal operation of the optocoupler.
The design employs a plug-in type optocoupler lead frame, which ensures the uniqueness of the plugging direction through the difference in width between the slot and the socket, and disperses stress through multiple plugging points to improve mechanical stability and shock resistance.
It improves assembly efficiency and reliability, enhances mechanical stability and seismic resistance, ensures the stability of electrical connections, and avoids assembly errors.
Smart Images
Figure CN223816410U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of semiconductor packaging, especially to a plug-in type optical coupling lead frame. BACKGROUND
[0002] With the wide application of photoelectric devices in electronic equipment, as an important photoelectric conversion element, the packaging technology of optical coupling is crucial to ensure the performance and reliability of optical coupling. As a key component of optical coupling packaging, the optical coupling lead frame has an important influence on the electrical connection, heat dissipation performance and packaging efficiency of the optical coupling.
[0003] The traditional optical coupling lead frame often needs complex operation steps in the assembly process, and lacks convenient positioning and connecting structure, which makes it need to spend a lot of time in the assembly process for the alignment and connection operation of the components, resulting in low production efficiency. Especially in mass production, this inefficient assembly method will significantly increase the production cost, affect the production progress, and the electrical connection structure design is not reasonable, which is easy to cause the electrical connection to be loose or the contact to be poor when used for a long time or affected by external environmental factors (such as temperature change, vibration, etc.), affecting the normal work of the optical coupling. SUMMARY
[0004] The present application provides a plug-in type optical coupling lead frame to improve the assembly efficiency and accuracy of the optical coupling lead frame, enhance the mechanical stability and shock resistance, and improve the functional integration.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0006] A plug-in type optical coupling lead frame, comprising a PT lead frame and an IP lead frame, the PT lead frame comprises a lead frame body one, a plurality of lead frame groups one are arranged on the lead frame body one, the IP lead frame comprises a lead frame body two, a plurality of lead frame groups two are arranged on the lead frame body two, and the PT lead frame and the IP lead frame are connected through the plug-in part.
[0007] Preferably, the lead frame group one comprises a plurality of frame units one, and the plurality of frame units one are connected through the connecting rib one.
[0008] Preferably, the frame unit one is provided with a base island one for placing a chip, the base island one is bent downward to form a pier through the bending point one, and the base island one is provided with a pin one connected with the lead frame group one.
[0009] Preferably, the lead frame group two comprises a plurality of frame units two, and the plurality of frame units two are connected by connecting ribs two, so that the plurality of frame units two are connected together.
[0010] Preferably, the frame unit two is provided with a base island two and a base island three for placing chips, and the base island two and the base island three are bent downward by a bending point two to form a double-pier design, and the base island two and the base island three are provided with pins two connected with the lead frame group two, and the base island two and the base island three are provided with placing grooves, and the double-pier design of the base island two and the base island three can accommodate multiple chips at the same time, thereby improving the functional integration of the lead frame.
[0011] Preferably, the insertion part on the lead frame body one comprises a counter slot one, a counter slot two and a counter slot three, the counter slot one and the counter slot two form an insertion end one, and the counter slot two and the counter slot three form an insertion end two, and the design of the counter slot one, the counter slot two and the counter slot three realizes the function of multi-point insertion, and improves the mechanical stability of the assembled lead frame.
[0012] Preferably, the insertion part on the lead frame body two comprises a counter insertion hole one and a counter insertion hole two, and the insertion end one and the insertion end two can be respectively inserted into the counter insertion hole one and the counter insertion hole two.
[0013] Preferably, the lead frame body one is provided with a plurality of insertion parts at equal distances on the upper and lower sides, and the insertion parts on the lead frame body two are respectively arranged on the upper and lower sides of each lead frame group two, and the counter insertion parts on the plurality of lead frame groups two can improve the stability of the PT lead frame and the IP lead frame after being counter-inserted together, and the plurality of lead frame groups two on the lead frame body two are integrally bent downward by a bending point three, and the bending of the plurality of lead frame groups two on the lead frame body two enables the IP lead frame to have space to be counter-inserted with the PT lead frame.
[0014] Preferably, the lead frame body one is provided with a plurality of positioning holes one on the upper and lower sides, and the lead frame body two is provided with a plurality of positioning holes two corresponding to the positioning holes one on the upper and lower sides, and the positioning holes one and the positioning holes two can be used for auxiliary positioning during the insertion process.
[0015] Preferably, the horizontal width of the counter slot one is greater than that of the counter slot two, the horizontal width of the counter slot two is greater than that of the counter slot three, the horizontal width of the counter insertion hole one is greater than that of the counter insertion hole two, and the horizontal width of the insertion end one is greater than that of the insertion end two, and the insertion end one and the insertion end two are respectively inserted into the counter insertion hole one and the counter insertion hole two, and the difference in width of the insertion slots and the insertion holes realizes the foolproof function, ensures the uniqueness of the insertion direction, thereby avoiding assembly errors, and the different widths of the insertion parts make the mechanical cooperation more compact, can better disperse the stress of the insertion parts, and improve the stability and shock resistance after the connection of the entire frame.
[0016] Compared with the prior art, the utility model has the following beneficial effects:
[0017] Through the width difference design of the slot and the jack, the only direction of the plug-in is ensured, the assembly error is avoided, the assembly efficiency and the reliability are improved, and the elastic space is provided for the multi-point plug-in part, the stress can be dispersed by the multi-point plug-in part, the mechanical stability and the anti-seismic performance of the frame are improved, and the overall connection firmness is enhanced. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will briefly introduce the drawing needed to be used in the embodiment, and obviously, the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating the creative labor.
[0019] Figure 1 It is the overall structure schematic view of the utility model;
[0020] Figure 2 It is the lead frame body one structure view of the utility model;
[0021] Figure 3 It is the position view of the pair of slots one, the pair of slots two and the pair of slots three of the utility model;
[0022] Figure 4 It is the frame unit one structure view of the utility model;
[0023] Figure 5 It is the lead frame body two structure view of the utility model;
[0024] Figure 6 It is the position view of the insertion end one and the insertion end two of the utility model;
[0025] Figure 7 It is the frame unit two structure view of the utility model.
[0026] Figure number explanation: 1, lead frame body one;11, positioning hole one;12, lead frame group one;13, frame unit one;131, base island one;132, bending point one;133, connecting rib one;14, pair of slots one;15, pair of slots two;16, pair of slots three;17, insertion end one;18, insertion end two;2, lead frame body two;21, positioning hole two;22, lead frame group two;23, frame unit two;231, base island two;232, placing groove;233, bending point two;234, connecting rib two;235, base island three;24, bending point three;25, pair of jacks one;26, pair of jacks two. DETAILED DESCRIPTION
[0027] The utility model will be described in further detail below in combination with the drawings.
[0028] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments in the following description are only as examples, and other obvious modifications can be thought of by those skilled in the art. The basic principles of the utility model defined in the following description can be used in other implementation schemes, modification schemes, improvement schemes, equivalent schemes and other technical schemes without departing from the spirit and scope of the utility model.
[0029] Those skilled in the art should understand that, in the disclosure of the utility model, the orientation or position indicated by the terms "longitudinal", "transverse", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, which is only for the simplified description of the utility model for the convenience of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore the above-mentioned terms cannot be understood as a limitation on the utility model.
[0030] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number. Embodiments
[0031] Please refer to Figures 1-7 A plug-in optical coupling lead frame includes a PT lead frame and an IP lead frame, the PT lead frame includes a lead frame body one 1, and the lead frame body one 1 is provided with a plurality of lead frame groups one 12, the IP lead frame includes a lead frame body two 2, and the lead frame body two 2 is provided with a plurality of lead frame groups two 22, and the PT lead frame and the IP lead frame are connected in cooperation through a plug-in part.
[0032] The lead frame group one 12 includes a plurality of frame units one 13, and the plurality of frame units one 13 are connected through a connecting rib one 133, so that the plurality of frame units one 13 are connected together through the connecting rib one 133.
[0033] The frame unit one 13 is provided with a base island one 131 for placing a chip, and the base island one 131 is bent downward to form a pier through a bending point one 132, and the base island one 131 is provided with a pin one connected with the lead frame group one 12.
[0034] The lead frame group two 22 comprises a plurality of frame units two 23 connected by a connecting rib two 234.
[0035] The frame unit two 23 is provided with a base island two 231 and a base island three 235 for placing a chip, the base island two 231 and the base island three 235 are bent downward by a bending point two 233 to form a pier, the base island two 231 and the base island three 235 are provided with pins two connected with the lead frame group two 22, the base island two 231 and the base island three 235 are formed with a placing groove 232, the chip can be better placed on the base island two 231 and the base island three 235 through the placing groove 232, the double-pier design of the base island two 231 and the base island three 235 can accommodate multiple chips at the same time, and the functional integration of the lead frame is improved.
[0036] The insertion part of the lead frame body one 1 comprises a counter slot one 14, a counter slot two 15 and a counter slot three 16, the counter slot one 14 and the counter slot two 15 form an insertion end one 17, the counter slot two 15 and the counter slot three 16 form an insertion end two 18, through the design of the counter slot one 14, the counter slot two 15 and the counter slot three 16, the function of multi-point insertion is realized, and the mechanical stability of the assembled lead frame is improved.
[0037] The insertion part of the lead frame body two 2 comprises a counter hole one 25 and a counter hole two 26, the insertion end one 17 and the insertion end two 18 can be respectively inserted into the counter hole one 25 and the counter hole two 26.
[0038] The lead frame body one 1 is provided with a plurality of insertion parts equidistantly on the upper and lower sides, the insertion parts of the lead frame body two 2 are respectively arranged on the upper and lower sides of each lead frame group two 22, through the counter insertion parts of the plurality of lead frame groups two 22, the stability of the PT lead frame and the IP lead frame after being counter-inserted together can be improved, the plurality of lead frame groups two 22 of the lead frame body two 2 are integrally bent downward by a bending point three 24, by bending the plurality of lead frame groups two 22 of the lead frame body two 2, the IP lead frame can have space to be counter-inserted with the PT lead frame.
[0039] The lead frame body one 1 is provided with a plurality of positioning holes one 11 on the upper and lower sides, the lead frame body two 2 is provided with a plurality of positioning holes two 21 corresponding to the positioning holes one 11 on the upper and lower sides, in the insertion process, the positioning holes one 11 and the positioning holes two 21 can be used for auxiliary positioning.
[0040] The transverse width of the socket one 14 is greater than that of the socket two 15, the transverse width of the socket two 15 is greater than that of the socket three 16, the transverse width of the insertion end one 17 is greater than that of the insertion end two 18, and the insertion end one 17 and the insertion end two 18 are respectively inserted into the socket one 25 and the socket two 26, the design of the difference in the width of the socket and the socket realizes the fool-proof function, ensures the uniqueness of the insertion direction, thereby avoiding the assembly error, the mechanical cooperation of the insertion parts with different widths is more compact, the stress of the insertion parts can be better dispersed, and the stability and the anti-seismic performance after the connection of the whole frame are improved.
[0041] In the manufacturing of the PT frame, the metal plate is first processed by the stamping process to form the lead frame body one 1, the lead frame group one 12, the frame unit one 13, the base island one 131, the connecting rib one 133 and the insertion part one and the like structure. In the stamping process, the accuracy of the bending point one 132 is ensured so that the base island one 131 can be accurately bent to form the pier. At the same time, the accurate formation of the positioning hole one 11 is ensured for the positioning in the subsequent production process;
[0042] In the manufacturing of the IP frame, the stamping process is also adopted to form the lead frame body two 2, the lead frame group two 22, the frame unit two 23, the base island two 231, the base island three 235, the connecting rib two 234, the insertion part two, the socket one 25, the socket two 26 and the bending point three 24 and the like structure, the accuracy of the bending point two 233 and the bending point three 24 is ensured to ensure that the base island two 231 and the base island three 235 can be correctly bent to form the pier and the lead frame group two 22 can be accurately bent downward;
[0043] In the optical coupling packaging, the chips are respectively placed on the base island one 131 of the PT frame and the base island two 231 and the base island three 235 of the IP frame, then the insertion end one 17 and the insertion end two 18 of the PT frame are aligned with the socket one 25 and the socket two 26 of the IP frame, the PT frame and the IP frame are inserted together through the simple insertion operation, and in the insertion process, the positioning hole one 11 and the positioning hole two 21 are used for auxiliary positioning to ensure the accuracy and stability of the insertion.
[0044] Those skilled in the art should understand that the embodiments of the utility model shown in the above description and the drawings are only as examples and do not limit the utility model. The purpose of the utility model has been completely and effectively realized. The function and the structural principle of the utility model have been shown and explained in the embodiments, and the embodiments of the utility model can have any deformation or modification without departing from the principle.
Claims
1. A plug-in type optocoupler lead frame, characterized in that, include PT lead frame, which includes a lead frame body (1) and a plurality of lead frame groups (12) are provided on the lead frame body (1). IP lead frame, which includes lead frame body two (2), and the lead frame body two (2) is provided with multiple lead frame groups two (22). The PT lead frame and the IP lead frame are connected by a plug-in joint.
2. The plug-in type optocoupler lead frame according to claim 1, characterized in that: The lead frame group (12) includes multiple frame units (13), which are connected by connecting ribs (133).
3. The plug-in type optocoupler lead frame according to claim 2, characterized in that: The frame unit (13) is provided with a base island (131) for placing the chip. The base island (131) is bent downward through a bending point (132) to form a platform. The base island (131) is provided with a pin connected to the lead frame group (12).
4. The plug-in type optocoupler lead frame according to claim 3, characterized in that: The lead frame group two (22) includes multiple frame units two (23), and the multiple frame units two (23) are connected by connecting ribs two (234).
5. The plug-in type optocoupler lead frame according to claim 4, characterized in that: The frame unit 2 (23) is provided with base island 2 (231) and base island 3 (235) for placing the chip. Base island 2 (231) and base island 3 (235) are bent downward through bending point 2 (233) to form a platform. Base island 2 (231) and base island 3 (235) are each provided with pin 2 connected to lead frame group 2 (22). Base island 2 (231) and base island 3 (235) are provided with placement groove (232).
6. The plug-in type optocoupler lead frame according to claim 5, characterized in that: The insertion part on the lead frame body (1) includes a first slot (14), a second slot (15) and a third slot (16). An insertion end (17) is formed between the first slot (14) and the second slot (15), and an insertion end (18) is formed between the second slot (15) and the third slot (16).
7. A plug-in type optocoupler lead frame according to claim 6, characterized in that: The insertion part on the lead frame body 2 (2) includes a first insertion hole (25) and a second insertion hole (26). The first insertion end (17) and the second insertion end (18) can be inserted into the first insertion hole (25) and the second insertion hole (26) respectively.
8. The plug-in type optocoupler lead frame according to claim 7, characterized in that: The lead frame body one (1) has multiple insertion points equidistantly arranged on both the upper and lower sides. The insertion points on the lead frame body two (2) are respectively arranged on the upper and lower sides of each lead frame group two (22). The multiple lead frame groups two (22) on the lead frame body two (2) are all bent downward as a whole through the bending point three (24).
9. A plug-in type optocoupler lead frame according to claim 8, characterized in that: The lead frame body one (1) is provided with multiple positioning holes one (11) on both the upper and lower sides, and the lead frame body two (2) is provided with positioning holes two (21) corresponding to the positioning holes one (11) on both the upper and lower sides.
10. A plug-in type optocoupler lead frame according to claim 9, characterized in that: The horizontal width of the first slot (14) is greater than that of the second slot (15), the horizontal width of the second slot (15) is greater than that of the third slot (16), the horizontal width of the first socket (25) is greater than that of the second socket (26), and the horizontal width of the first insertion end (17) is greater than that of the second insertion end (18), and they are respectively inserted into the first socket and the second socket (26).