Light sensor cover fixture

Abstract

This application relates to a cover fitting fixture for a light sensor, comprising a substrate base, a cover fixing plate, and a cover support plate. The substrate base has a reference hole and a recessed area for placing the substrate. The recessed area has a positioning pin and a first guide hole. The cover fixing plate has a reference pin and a recessed pit for placing the cover. The recessed pit has a first positioning hole and a guide pin. The substrate has a second positioning hole and a second guide hole. The cover has a third positioning hole and a third guide hole. The positioning pin passes through the second positioning hole, and the guide pin passes through the third guide hole. The cover support plate covers the cover fixing plate and supports the cover inside the cover support plate. In this cover fitting fixture, the substrate base supports the substrate, the cover fixing plate positions the cover, and the cover support plate supports the cover, thereby achieving precise alignment of the substrate and the cover.

Description

Technical Field

[0001] This application relates to sensor packaging technology, specifically to a light sensor cover fixture. Background Technology

[0002] Light sensor packaging is a type of sensor packaging. Typical light sensors use a process of half-cutting followed by capping or double molding. The latest light sensors have the cap directly applied to the substrate. The smooth substrate and the smooth cap fit together directly. Each cap has only three alignment holes designed to align with the corresponding three holes on the substrate. Existing design fixtures are no longer sufficient to achieve this alignment, requiring a redesigned high-precision alignment fixture to ensure that the cap holes are precisely aligned with the component positions on the substrate, thus enabling the light sensor to perform its sensing function. Utility Model Content

[0003] To overcome the above-mentioned defects, this application provides a light sensor cover fixture, which uses a substrate base to support the substrate, a cover fixing plate to position the cover, and a cover support plate to hold the cover, thereby achieving the purpose of precise alignment between the substrate and the cover.

[0004] The technical solution adopted by this application to solve its technical problem is:

[0005] A light sensor cover fixture includes a substrate base, a cover fixing plate, and a cover support plate. The substrate base has a reference hole and a recessed area for placing the substrate. The recessed area has a positioning pin and a first guide hole. The cover fixing plate has a reference pin and a recessed pit for placing the cover. The recessed pit has a first positioning hole and a guide pin. The substrate has a second positioning hole and a second guide hole. The cover has a third positioning hole and a third guide hole. The positioning pin passes through the second positioning hole, and the guide pin passes through the third guide hole. The cover support plate covers the cover fixing plate and supports the cover inside the cover support plate. The cover fixing plate covers the substrate base. The reference pin is inserted into the reference hole. The positioning pin passes through the third positioning hole and the first positioning hole. The guide pin passes through the second guide hole and the first guide hole.

[0006] Optionally, the substrate base is provided with a notch and a first through hole, and the head of the reference pin has a spherical structure.

[0007] Optionally, a vent hole is provided on the cover fixing plate, and a groove is provided on the back of the cover fixing plate.

[0008] Optionally, the trench includes mutually perpendicular transverse and longitudinal trenches, and the cover protrudes from the sinkhole.

[0009] Optionally, the cover plate is fixedly provided with a through groove and a second through hole, the through groove is provided with a spacer strip, and the inner side wall of the through groove and the spacer strip are provided with cover lugs.

[0010] Optionally, the lid has an edge protrusion strip, and the lid lugs can support the edge protrusion strip.

[0011] Optionally, a clearance groove is provided on the cover plate, the clearance groove having an elongated oval structure, and the reference pin is inserted into the clearance groove.

[0012] Optionally, a magnet mounting groove is provided on the cover fixing plate, and a magnet is fixed in the magnet mounting groove for attracting the cover support plate.

[0013] Optionally, the cover plate is made of magnetic stainless steel and the thickness of the cover plate is 0.2mm ± 0.02mm.

[0014] The beneficial effects of this application are as follows: In this application, a recessed area is provided on the substrate base. Placing the substrate in the recessed area satisfies the requirement that the overall thickness of the fixture after the cover is added reaches 0.975mm. The substrate base is used to support the substrate, the cover fixing plate is used to position the cover, and the cover support plate is used to hold the cover. The substrate base is provided with a positioning pin and a first guide hole, and the cover fixing plate is provided with a first positioning hole and a guide pin, thereby achieving the purpose of precise alignment between the substrate and the cover. This ensures that the light-emitting chip on the substrate emits light precisely through a hole, and the light-receiving chip on the substrate receives the light emitted by the light-emitting chip through the precise hole in the cover, thus completing the sensing function of the light sensor. Attached Figure Description

[0015] Figure 1 This is an assembly drawing of the fixture with the affixed cover in this application;

[0016] Figure 2 This is one of the exploded views of the fixture in this application;

[0017] Figure 3 This is the second exploded view of the fixture in this application;

[0018] Figure 4 This is one of the assembly diagrams of the substrate assembly in this application;

[0019] Figure 5 This is the second assembly diagram of the substrate assembly in this application;

[0020] Figure 6 This is an exploded view of the substrate assembly in this application;

[0021] Figure 7 This is one of the assembly diagrams of the cover assembly in this application;

[0022] Figure 8 This is the second assembly diagram of the cover assembly in this application;

[0023] Figure 9 This is an exploded view of the cover assembly in this application;

[0024] Figure 10 This is one of the structural schematic diagrams of the cover fixing plate in this application;

[0025] Figure 11 This is the second structural schematic diagram of the cover fixing plate in this application;

[0026] Figure 12 This is one of the structural schematic diagrams of the cover plate in this application;

[0027] Figure 13 This is the second schematic diagram of the structure of the cover plate in this application;

[0028] Figure 14 This is an assembly diagram of the substrate and the cover in this application;

[0029] Figure 15 This is an exploded view of the substrate and the cover in this application;

[0030] In the figure: 10-substrate base, 11-recessed area, 12-positioning pin, 13-first guide hole, 14-notch, 15-reference hole, 16-first through hole.

[0031] 20-Cover fixing plate, 21-Sunken pit, 22-Groove, 23-Ventilation hole, 24-First positioning hole, 25-Guide pin, 26-Base pin, 27-Magnet mounting slot.

[0032] 30-Lid support plate, 31-Through groove, 32-Lid lug, 33-Spacer strip, 34-Second through hole, 35-Leaning groove

[0033] 40-Substrate, 41-Second positioning hole, 42-Second guide hole, 50-Cover, 51-Third positioning hole, 52-Third guide hole, 53-Edge protrusion. Detailed Implementation

[0034] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the embodiments of this application. Obviously, the embodiments described in this application are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such uses of the terms can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0037] Example: Figure 1-15As shown, a light sensor cover fixture includes a substrate base 10, a cover fixing plate 20, and a cover support plate 30. The substrate base 10 has a reference hole 15 and a recessed area 11 for placing a substrate 40. The recessed area 11 has a positioning pin 12 and a first guide hole 13. The cover fixing plate 20 has a reference pin 26 and a recessed pit 21 for placing a cover 50. The recessed pit 21 has a first positioning hole 24 and a guide pin 25. The substrate 40 has a second positioning hole 41 and a second guide hole 42. The cover 50 has a third positioning hole 51 and a third guide hole 52. When the substrate 40 is placed on the substrate base... When the 10 is in the sunken area 11, the positioning pin 12 passes through the second positioning hole 41. When the cover 50 is placed in the sunken pit 21 of the cover fixing plate 20, the guide pin 25 passes through the third guide hole 52. The cover support plate 30 covers the cover fixing plate 20, and the cover support plate 30 is used to support the cover 50 inside the cover support plate 30. The cover fixing plate 20 covers the base plate 10. The reference pin 26 is inserted into the reference hole 15. The positioning pin 12 passes through the third positioning hole 51 and the first positioning hole 24. The guide pin 25 passes through the second guide hole 42 and the first guide hole 13.

[0038] Optionally, the locating pin 12 is installed in a through hole that extends to the back of the substrate base 10 to form a clearance hole for the locating pin 12.

[0039] In use, the substrate 40, i.e., the light sensor, is placed in the recessed area 11 of the substrate base 10, and the positioning pin 12 is inserted into the second positioning hole 41 of the substrate 40 to quickly position the substrate 40, forming a substrate assembly. Then, the cover 50 is placed in the recess 21 of the cover fixing plate 20, and the guide pin 25 is inserted into the third guide hole 52 of the cover 50 to quickly position the cover 50. In this embodiment, the cover support plate 30 has six recesses 21. The cover support plate 30 is then fixed to the cover fixing plate 20. The cover support plate 30 is used to support the cover 50 to prevent the cover 50 from falling off when the cover fixing plate 20 is flipped, forming a cover assembly. Finally, the cover support plate 30 is placed on the substrate base 10, and the positioning pin 12 passes through the third positioning hole 51 and the first positioning hole 24, and the guide pin 25 passes through the second guide hole 42 and the first guide hole 13 to accurately position the substrate 40 and the cover 50. Figure 1-2 As shown, after assembly, from top to bottom, the components are: cover fixing plate 20, cover 50, cover support plate 30, base plate 40, and base plate base 10.

[0040] In this application, a recessed area 11 is provided on the substrate base 10. The substrate 40 is placed in the recessed area 11, which meets the requirement that the overall thickness of the fixture after the cover is added reaches 0.975mm. The substrate base 10 is used to support the substrate 40, the cover fixing plate 20 is used to position the cover 50, and the cover support plate 30 is used to support the cover 50. The substrate base 10 is provided with a positioning pin 12 and a first guide hole 13, and the cover fixing plate 20 is provided with a first positioning hole 24 and a guide pin 25, thereby achieving the purpose of precise alignment between the substrate 40 and the cover 50. This ensures that the light-emitting chip on the substrate 40 emits light precisely through a hole, and the light-receiving chip on the substrate 40 receives the light emitted by the light-emitting chip through the precise hole of the cover 50, thus completing the sensing function of the light sensor.

[0041] like Figure 4-6 As shown, the substrate base 10 has a notch 14 and a first through hole 16, and the head of the reference pin 26 is spherical. The notch 14 on the side wall of the substrate base 10 facilitates the insertion and removal of the substrate 40. First through holes 16 for pressure baking are designed at both ends of the substrate base 10 to facilitate subsequent baking and stacking. A corresponding second through hole 34 is also designed on the cover plate 30. The spherical head of the reference pin 26 facilitates the quick and precise installation of the cover fixing plate 20 onto the substrate base 10.

[0042] like Figure 7-11 As shown, a vent 23 is provided on the cover fixing plate 20, and a groove 22 is provided on the back of the cover fixing plate 20. The groove 22 includes mutually perpendicular transverse grooves and longitudinal grooves, and the cover 50 protrudes from the recess 21. On the one hand, the groove 22 plays a role in releasing stress during the baking process; on the other hand, the groove 22 and the vent 23 together play a role in discharging volatile substances released by the curing of the glue.

[0043] The depth of the recess 21 on the cover fixing plate 20 is determined according to the thickness of the cover 50. After the cover 50 is assembled onto the cover fixing plate 20, ensure that the cover 50 protrudes from the cover fixing plate 20 so that the cover 50 can be in close contact with the substrate 40 of the substrate base 10. By using the guide pin 25 and the third guide hole 52 to cooperate with each other, the cover 50 can be quickly and accurately installed onto the cover fixing plate 20.

[0044] like Figure 12-13 As shown, the cover plate 30 is fixedly provided with a through groove 31 and a second through hole 34. A spacer strip 33 is provided in the through groove 31. Cover lugs 32 are provided on the inner side wall of the through groove 31 and on the spacer strip 33.

[0045] The lid 50 has an edge protrusion 53, and the lid lug 32 can support the edge protrusion 53. The lid support plate 30 has a through groove 31 to expose the lid 50, and the spacer strip 33 and lid lug 32 are to support the edge protrusion 53 and prevent the lid 50 from falling off.

[0046] like Figure 13 As shown, a relief groove 35 is formed on the cover plate 30. The relief groove 35 has an elongated oval structure, and the reference pin 26 is inserted into the relief groove 35. During assembly, the position of the cover plate 30 is adjusted so that the cover lug 32 supports the edge protrusion 53. After the cover 50 is cured, the elongated oval structure of the relief groove 35 allows the cover plate 30 to slide, and the cover lug 32 uses the edge protrusion 53 to facilitate the removal of the cover plate 30. The design is very ingenious.

[0047] like Figure 10 As shown, a magnet mounting groove 27 is provided on the cover fixing plate 20, and a magnet is fixed in the magnet mounting groove 27. The magnet is used to attract the cover support plate 30.

[0048] The cover plate 30 is made of magnetic stainless steel and has a thickness of 0.2mm ± 0.02mm. The cover plate 30 is attracted by magnets, making assembly and disassembly very convenient. The cover plate 30 is designed to be as thin as possible to facilitate control of the overall thickness of the fixture.

[0049] This application designs a set of cover fixtures that enable the product to be accurately positioned on the substrate by the cover being cured with glue, ensuring that the light-emitting chip on the substrate emits light through a hole precisely, and the light-receiving chip on the substrate receives the light emitted by the light-emitting chip through the precise hole in the cover.

[0050] (1) The cover fixing plate 20 is provided with longitudinal and transverse grooves 22, so that the volatiles generated when the glue is cured can be released through the longitudinal and transverse grooves, which can play the role of discharging volatiles and reducing glue bubbles.

[0051] (2) The cover 50 can be accurately positioned by using the recess 21 and guide pin 25 on the cover fixing plate 20, and the cover fixing plate 20 can be accurately assembled to the substrate base 10 by using the guide pin 25 and the first positioning hole 24, so that the substrate 40 and the cover 50 are accurately positioned, thereby improving the alignment accuracy of the substrate 40 and the cover 50.

[0052] (3) The head of the reference pin 26 is designed as a spherical structure to facilitate the quick and accurate installation of the cover fixing plate 20 into the base plate base 10.

[0053] (4) The cover fixing plate 20 is equipped with a magnet, which is used to fix the cover support plate 30, and then the cover support plate 30 is used to support the cover 50, so that the cover 50 does not fall when it is inverted.

[0054] (5) The lid tray 30 is designed to be movable in the same plane. When inverted, the lid tray 32 supports the edge protrusion 53. When the plane moves, it can be used to unlock, so that the lid tray 30 can be taken out without obstruction after curing.

[0055] (6) A recessed area 11 is machined on the substrate base 10. The recessed area 11 is machined into six blocks that are separated by the substrate 40. Each block corresponds to a cover 50. Each block of the recessed area 11 is provided with two positioning pins 12 and a first guide hole 13. Similarly, six sinkholes 21 are machined on the inner side of the cover fixing plate 20. A cover 50 is placed in each sinkhole 21. Two first positioning holes 24 and a guide pin 25 are machined on each sinkhole 21. The positioning pin 12 corresponds to the first positioning hole 24, and the guide pin 25 corresponds to the first guide hole 13, thereby ensuring that the product accuracy fully meets the positioning requirements and the positioning accuracy is within 30um.

[0056] It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this patent application shall be determined by the appended claims.

Claims

1. A light sensor capping fixture, comprising: The system includes a substrate base (10), a cover fixing plate (20), and a cover support plate (30). The substrate base (10) has a reference hole (15) and a recessed area (11) for placing the substrate (40). The recessed area (11) has a positioning pin (12) and a first guide hole (13). The cover fixing plate (20) has a reference pin (26) and a recessed pit (21) for placing the cover (50). The recessed pit (21) has a first positioning hole (24) and a guide pin (25). The substrate (40) has a second positioning hole (41) and a second guide hole (42). The cover (50) has a third positioning hole (51) and a third guide hole (30). The guide hole (52) is provided. The positioning pin (12) passes through the second positioning hole (41). The guide pin (25) passes through the third guide hole (52). The cover plate (30) covers the cover fixing plate (20) and is used to support the cover (50) inside the cover plate (30). The cover fixing plate (20) covers the base plate (10). The reference pin (26) is inserted into the reference hole (15). The positioning pin (12) passes through the third positioning hole (51) and the first positioning hole (24). The guide pin (25) passes through the second guide hole (42) and the first guide hole (13).

2. The light sensor capping fixture of claim 1, wherein: The substrate base (10) is provided with a notch (14) and a first through hole (16), and the head of the reference pin (26) is spherical.

3. The light sensor capping fixture of claim 1, wherein: Ventilation holes (23) are provided on the cover fixing plate (20), and grooves (22) are provided on the back of the cover fixing plate (20).

4. The light sensor capping fixture of claim 3, wherein: The groove (22) includes mutually perpendicular transverse grooves and longitudinal grooves, and the cover (50) protrudes from the sinkhole (21).

5. The light sensor capping fixture of claim 1, wherein: The cover plate (30) is fixedly provided with a through groove (31) and a second through hole (34). The through groove (31) is provided with a spacer strip (33). The inner side wall of the through groove (31) and the spacer strip (33) are both provided with cover lugs (32).

6. The light sensor capping fixture of claim 5, wherein: The lid (50) is provided with an edge protrusion (53), and the lid lug (32) can support the edge protrusion (53).

7. The light sensor cover fixture according to claim 1, characterized in that: The cover plate (30) has a relief groove (35) with an elongated oval structure, and the reference pin (26) is inserted into the relief groove (35).

8. The light sensor cover fixture according to claim 1, characterized in that: A magnet mounting groove (27) is provided on the cover fixing plate (20), and a magnet is fixed in the magnet mounting groove (27) for attracting the cover support plate (30).

9. The light sensor capping fixture of claim 8, wherein: The cover plate (30) is made of magnetic stainless steel and has a thickness of 0.2mm ± 0.02mm.

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