A photoelectric coupling device for signal line

Abstract

The present invention provides a photoelectric coupling device for a signal line, which relates to the field of photoelectric coupling and includes an upper cover, a lower shell, a light source and a light receiver. Two groups of U-shaped conductive plates are symmetrically distributed on the lower shell. The light source and the light receiver are symmetrically welded on the two groups of U-shaped conductive plates respectively. A first sealing member is provided between the light source and the light receiver. The first sealing member seals the optical path of the light source and the light receiver. Pins are detachably installed at both ends of the U-shaped conductive plate. The present invention abandons the traditional gluing packaging method and fixes the light source and the light receiver by snapping, so that the upper cover and the lower shell can be disassembled. At the same time, the light source and the light receiver are sealed by the first sealing member to prevent the divergence of light and the pollution of dust to the light receiver. At the same time, the heat sink shell dissipates heat for the light source and the light receiver to ensure the service life of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of photoelectric coupling, and in particular to a photoelectric coupling device for a signal line. Background Art

[0002] The photoelectric coupling device is also called a photoelectric isolator or an optical coupler, or optocoupler for short. It is a device that uses light as a medium to transmit signal line signals. Usually, the light emitter (such as a light-emitting diode chip) and the light receiver (such as a photosensitive chip) are encapsulated in the same cavity, and the optical transmission process is divided into an input end and an output end. When an electrical signal is applied to the signal line at the input end, the light emitter emits light, and the light receiver receives the light and generates an electrical signal, thereby realizing the "electric-light-electric" conversion. Since the input and output of the photoelectric coupler are isolated from each other, and the electrical signal transmission has the characteristics of unidirectionality, it has good electrical insulation and anti-interference capabilities. Therefore, it is widely used in various circuits such as switching circuits, logic circuits, and high-voltage voltage stabilization circuits;

[0003] In order to ensure the airtightness of the structure, the traditional photoelectric coupling device used for signal line signal transmission is usually packaged with colloid. This leads to the fact that in some university courses, it is not convenient to disassemble the photocoupler, and it is not easy to show the internal structure for students to understand. It is well known that the pins of the photocoupler are relatively important and easy to deform, and the deformation of the pins represents the damage of the photocoupler. The pins cannot be replaced in the structure of colloid packaging, which greatly increases the teaching cost of colleges and universities. Therefore, the present invention proposes a photoelectric coupling device for signal lines to solve the problems existing in the prior art. Summary of the invention

[0004] In view of the above problems, the present invention proposes an optoelectronic coupling device for signal lines. The optoelectronic coupling device for signal lines abandons the traditional gluing packaging method and is fixed by snapping, so that the upper cover and the lower shell can be disassembled, and the sealing is ensured by the first seal and the second seal.

[0005] To achieve the purpose of the present invention, the present invention is implemented through the following technical scheme: an optoelectronic coupling device for a signal line, comprising an upper cover, a lower shell, a light source and a light receiver, two groups of U-shaped conductive plates are symmetrically distributed on the lower shell, the light source and the light receiver are symmetrically welded on the two groups of U-shaped conductive plates, a first seal is provided between the light source and the light receiver, the light path between the light source and the light receiver is sealed by the first seal, pins are detachably installed at both ends of the U-shaped conductive plate, the upper cover is provided with an installation groove adapted to the light source, the light receiver, the U-shaped conductive plate, the first seal and the pins, the upper cover and the lower shell are clamped by a clamping assembly, and a second seal for airtight sealing is also provided between the upper cover and the lower shell.

[0006] Further improvements are: the first sealing component includes a sealing cover, a reflective coating, a plug-in block and a plug-in slot, the inner wall of the sealing cover is provided with a reflective coating, the two ends of the sealing cover are respectively connected to the light source and the light receiver, the bottom of the sealing cover is symmetrically provided with plug-in blocks, the lower shell is provided with a plug-in slot adapted to the plug-in block, the plug-in block is inserted into the plug-in slot, and the sealing cover is also provided with a heat sink.

[0007] Further improvements are: a convex lens is provided inside the sealing cover, a storage groove is provided on the inner wall of the sealing cover close to one end of the light receiver, a cleaning pad is provided in the storage groove for cleaning the glass sheet at the receiving end of the light receiver, a push rod is penetrated through the side wall of the sealing cover, and one end of the push rod is fixedly connected to the cleaning pad.

[0008] A further improvement is that the push rod includes a first connecting rod, a second connecting rod and a third connecting rod, the first connecting rod is connected to the cleaning pad, the second connecting rod is threadedly installed inside the first connecting rod, and the third connecting rod is threadedly installed inside the second connecting rod.

[0009] Further improvements are: the second sealing component includes a sealing block, a sealing groove, a glue groove, a glue injection hole and a solidified colloid, the lower shell is provided with a frame-type sealing block near the outer edge, the upper cover is provided with a matching sealing groove, the sealing block and the sealing groove are both provided with glue grooves, the upper cover is provided with a glue injection hole connected to the glue groove, and after the upper cover and the lower shell are sealed, epoxy resin glue is added to the glue groove through the glue injection hole and solidified to form a solidified colloid.

[0010] A further improvement is that the upper cover and the lower shell are both made of PC material, the sealing block and the sealing groove are made of PP material, and the sealing block and the sealing groove are respectively connected to the lower shell and the upper cover using HY-302AB glue.

[0011] A further improvement is that both ends of the U-shaped conductive plate are provided with connecting grooves, the upper ends of the pins are provided with connecting blocks adapted to the connecting grooves, and the connecting blocks are snapped into the connecting grooves.

[0012] A further improvement is that a positioning groove is further provided at the end of the connecting groove, and a matching positioning block is provided on the pin, and the positioning block is snapped into the positioning groove.

[0013] A further improvement is that the snap-in assembly comprises a snap-in slot and a snap-in block, the lower shell is provided with a snap-in slot, the upper cover is provided with a snap-in block matched with the snap-in slot, and the snap-in block is inserted into the snap-in slot for snap-in fixation.

[0014] The beneficial effects of the present invention are as follows: the present invention abandons the traditional gluing packaging method and fixes it by snapping, so that the upper cover and the lower shell can be disassembled, and the first sealing member is used to seal the light source and the light receiver to prevent the divergence of light and the pollution of dust to the light receiver. At the same time, the heat sink shell dissipates heat for the light source and the light receiver to ensure the service life of the device. By setting the second sealing member and the property that the PP material and the epoxy resin glue cannot be glued, the airtightness of the connection between the upper cover and the lower shell is ensured by solidifying the glue, and the external dust is prevented from entering the package, which further increases the service life of the device. A detachable installation method is adopted between the pin and the U-shaped conductive plate, and the pin can be replaced when it is damaged by cooperating with the detachable upper cover and the lower shell, thereby reducing the teaching cost of colleges and universities. At the same time, a cleaning pad for cleaning the light receiver is provided in the sealing cover of the device, and the dust accumulated on the glass sheet of the light receiver can be removed to avoid affecting the reception of the light receiver, which further increases the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the present invention.

[0016] Figure 2 It is a structural schematic diagram of the upper cover of the present invention.

[0017] Figure 3 It is a schematic diagram of the solidified rubber part of the present invention.

[0018] Figure 4 It is a structural schematic diagram of the lower cover of the present invention.

[0019] Figure 5 It is a schematic diagram of the disassembly of the first sealing member of the present invention.

[0020] Figure 6 It is a top sectional view of the sealing cover of the present invention.

[0021] Figure 7 It is a right side sectional view of the sealing cover of the present invention.

[0022] Figure 8 It is a schematic diagram of a putter of the present invention.

[0023] Wherein: 1. upper cover; 2. lower shell; 3. light source; 4. light receiver; 5. U-shaped conductive plate; 6. pin; 7. sealing cover; 8. reflective coating; 9. plug-in block; 10. plug-in slot; 11. mounting slot; 12. heat sink; 13. sealing block; 14. sealing slot; 15. glue slot; 16. glue injection hole; 17. solidifying colloid; 18. connecting slot; 19. connecting block; 20. positioning slot; 21. positioning block; 22. snap-in slot; 23. snap-in block; 24. convex lens; 25. storage slot; 26. cleaning pad; 27. push rod; 28. first connecting rod; 29. ​​second connecting rod; 30. third connecting rod. DETAILED DESCRIPTION

[0024] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with examples. The examples are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0025] according to Figure 1-8 As shown, this embodiment proposes an optoelectronic coupling device for a signal line, comprising an upper cover 1, a lower shell 2, a light source 3 and a light receiver 4, two groups of U-shaped conductive plates 5 are symmetrically distributed on the lower shell 2, the light source 3 and the light receiver 4 are symmetrically welded on the two groups of U-shaped conductive plates 5, a first seal is provided between the light source 3 and the light receiver 4, the light path between the light source 3 and the light receiver 4 is sealed by the first seal, pins 6 are detachably installed at both ends of the U-shaped conductive plate 5, a mounting groove 11 adapted to the light source 3, the light receiver 4, the U-shaped conductive plate 5, the first seal and the pin 6 is provided on the upper cover 1, the upper cover 1 and the lower shell 2 are clamped by a clamping assembly, and a second seal for airtight sealing is also provided between the upper cover 1 and the lower shell 2.

[0026] In the device, the light source 3 is a light emitting diode, and the light receiver 4 is a phototransistor. Insulation isolation is formed between the light emitting diode and the phototransistor. The light path between the light emitting diode and the phototransistor is sealed by a first sealing member to reduce the divergence of the light source, thereby increasing the receiving effect of the phototransistor and preventing dust from polluting the phototransistor. At the same time, an airtight seal is formed between the upper cover 1 and the lower shell 2 by a second sealing member to prevent dust from entering the interior and ensure the sealing between the upper cover 1 and the lower shell 2. At the same time, the upper cover 1 and the lower shell 2 of the device are connected by a snap-fit ​​method to facilitate disassembly.

[0027] The first sealing component includes a sealing cover 7, a reflective coating 8, a plug-in block 9 and a plug-in slot 10. The inner wall of the sealing cover 7 is provided with a reflective coating 8. The two ends of the sealing cover 7 are respectively connected to the light source 3 and the light receiver 4. The bottom of the sealing cover 7 is symmetrically provided with plug-in blocks 9. The lower shell 2 is provided with a plug-in slot 10 adapted to the plug-in block. The plug-in block 9 is inserted into the plug-in slot 10. The sealing cover 7 is also provided with a heat sink 12.

[0028] The sealing cover 7 forms a seal between the light-emitting diode and the phototransistor, and the reflective coating 8 further increases the focusing effect, thereby ensuring the transmission of the signal. At the same time, the arrangement of the plug-in block 9 and the plug-in slot 10 ensures the stability of the sealing cover 7, and the arrangement of the heat sink 12 can dissipate the heat for the reflective diode and the phototransistor, further increasing the service life of the device.

[0029] A convex lens 24 is provided inside the sealing cover 7, and a storage groove 25 is provided on the inner wall of the sealing cover 7 close to one end of the photoreceiver 4. A cleaning pad 26 for cleaning the glass sheet at the receiving end of the photoreceiver 4 is provided in the storage groove 25. A push rod 27 is penetrated through the side wall of the sealing cover 7, and one end of the push rod 27 is fixedly connected to the cleaning pad 26. The sealing cover 7 and the convex lens 24 of the device are both made of insulating materials, and the convex lens 24 and the sealing cover 7 are fixedly connected, thereby forming a sealed isolation package between the light source 3 and the photoreceiver 4. Because the sealing cover 7 is sealed and insulated, and the convex lens 24 is light-transmitting and insulated, it fully meets the requirements of the optical coupling isolation package. In the optical path, because the convex lens 24 has the function of focusing light, when the light is irradiated, it will concentrate the light at the center position of the receiving end of the photoreceiver 4. In this way, a storage groove 25 is provided on the front side wall of the photoreceiver 4, and the cleaning pad 26 is stored in the storage groove 25, which will not affect the transmission of the optical path.

[0030] The device achieves a focusing effect by arranging a convex lens 24 inside the sealing cover 7, thereby increasing the transmission effect of the device, and the device is provided with a cleaning pad 26 on the inner side of the sealing cover 7, which can be used to clean the glass sheet at the receiving end of the light receiver 4 when not in operation, to prevent dust from accumulating on the receiving end of the light receiver when the device is disassembled for demonstration, thereby affecting light reception, further increasing the service life of the device, and the cleaning pad 26 can be stored in the storage slot 25 when not in use, thereby not affecting the normal operation of the light receiver 4.

[0031] The push rod 27 includes a first connecting rod 28 , a second connecting rod 29 and a third connecting rod 30 . The first connecting rod 28 is connected to the cleaning pad 26 , the second connecting rod 29 is threadedly installed inside the first connecting rod 28 , and the third connecting rod 30 is threadedly installed inside the second connecting rod 29 .

[0032] The device adopts a nesting doll method to threadably install the second connecting rod 29 and the third connecting rod 30 on the first connecting rod 28, thereby reducing the overall length of the push rod 27. When in use, the second connecting rod 29 and the third connecting rod 30 can be unscrewed to ensure the length of the push rod 27, which is relatively convenient.

[0033] The second sealing member includes a sealing block 13, a sealing groove 14, a glue groove 15, a glue injection hole 16 and a solidified colloid 17. A frame-shaped sealing block 13 is provided at a position near the outer edge of the lower shell 2, and a matching sealing groove 14 is provided on the upper cover 1. Both the sealing block 13 and the sealing groove 14 are provided with a glue groove 15. The upper cover 1 is provided with a glue injection hole 16 connected with the glue groove 15. After the upper cover 1 and the lower shell 2 are sealed, epoxy resin glue is added into the glue groove 15 through the glue injection hole 16 and solidified to form a solidified colloid 17. By injecting glue into the glue groove 15, the fluidity of the colloid is used to prevent a gap from existing between the sealing block 13 and the sealing groove 14. After the colloid solidifies, a seal is formed between the sealing block 13 and the sealing groove 14, thereby ensuring the sealing effect of the connection between the upper cover 1 and the lower shell 2 of the device.

[0034] The upper cover 1 and the lower shell 2 are both made of PC material, and the sealing block 13 and the sealing groove 14 are made of PP material. The sealing block 13 and the sealing groove 14 are respectively connected to the lower shell 2 and the upper cover 1 using HY-302AB glue. The PP material and the epoxy resin glue cannot be bonded, so after the epoxy resin glue solidifies, no adhesive fixation will occur, and at the same time, the adhesive sealing effect can be guaranteed, so that the upper cover 1 and the lower shell 2 can be disassembled while ensuring the sealing of the connection.

[0035] Both ends of the U-shaped conductive plate 5 are provided with connecting grooves 18, and the upper end of the pin 6 is provided with a connecting block 19 adapted to the connecting groove 18, and the connecting block 19 is inserted into the connecting groove 18. Through the adaptation of the connecting groove 18 and the connecting block 19, it is convenient to align and install the pin 6. At the same time, the detachable pin 6 cooperates with the detachable upper cover 1 and the lower shell 2. When the pin 6 is damaged, the pin 6 can be replaced, thereby increasing the reusability of the device and reducing the teaching cost of colleges and universities.

[0036] A positioning groove 20 is also provided at the end of the connecting groove 18, and a matching positioning block 21 is provided on the pin 6. The positioning block 21 is inserted into the positioning groove 20. Through the gravity of the positioning block 21 itself, the pin 6 can be fixed after the positioning groove 20 is engaged, thereby facilitating the assembly of the device.

[0037] The snap-on assembly includes a snap-on groove 22 and a snap-on block 23. The lower shell 2 is provided with a snap-on groove 22, and the upper cover 1 is provided with a snap-on block 23 adapted to the snap-on groove 22. The snap-on block 23 is inserted into the snap-on groove 22 for snap-on fixation. The device is sealed and fixed by the arrangement of the snap-on groove 22 and the snap-on block 23, which is convenient for disassembly.

[0038] The photoelectric coupling device for the signal line is installed by snapping together the upper cover 1 and the lower shell 2, so that the lower shell 2 and the upper cover 1 can be disassembled. At the same time, the pin 6 can be replaced by the detachable connection between the pin 6 and the U-shaped conductive plate 5. The setting of the sealing cover 7 ensures the convergence of the light path between the light source 3 and the light receiver, thereby ensuring the transmission of the signal.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A photoelectric coupling device for a signal line, comprising an upper cover (1), a lower housing (2), a light source (3) and a light receiver (4), characterized in that: Two groups of U-shaped conductive plates (5) are symmetrically distributed on the lower shell (2); the light source (3) and the light receiver (4) are symmetrically welded to the two groups of U-shaped conductive plates (5), respectively; a first sealing member is provided between the light source (3) and the light receiver (4); the light path between the light source (3) and the light receiver (4) is sealed by the first sealing member; pins (6) are detachably installed at both ends of the U-shaped conductive plates (5); a mounting groove (11) is provided on the upper cover (1) that is compatible with the light source (3), the light receiver (4), the U-shaped conductive plates (5), the first sealing member and the pins (6); the upper cover (1) and the lower shell (2) are clamped together by a clamping assembly; a second sealing member for airtight sealing is also provided between the upper cover (1) and the lower shell (2); The first sealing member comprises a sealing cover (7), a reflective coating (8), a plug-in block (9) and a plug-in slot (10); the inner wall of the sealing cover (7) is provided with a reflective coating (8); the two ends of the sealing cover (7) are respectively connected to the light source (3) and the light receiver (4); the bottom of the sealing cover (7) is symmetrically provided with plug-in blocks (9); the lower shell (2) is provided with a plug-in slot (10) adapted to the plug-in block; the plug-in block (9) is inserted into the plug-in slot (10); and the sealing cover (7) is also provided with a heat sink (12); A convex lens (24) is provided inside the sealing cover (7), a storage groove (25) is provided on the inner wall of the sealing cover (7) close to one end of the light receiver (4), a cleaning pad (26) for cleaning the glass sheet at the receiving end of the light receiver (4) is provided in the storage groove (25), and a push rod (27) is provided through the side wall of the sealing cover (7), one end of the push rod (27) is fixedly connected to the cleaning pad (26).

2. The photoelectric coupling device for a signal line according to claim 1, characterized in that: The push rod (27) comprises a first connecting rod (28), a second connecting rod (29) and a third connecting rod (30), wherein the first connecting rod (28) is connected to the cleaning pad (26), the second connecting rod (29) is threadedly mounted inside the first connecting rod (28), and the third connecting rod (30) is threadedly mounted inside the second connecting rod (29).

3. The photoelectric coupling device for a signal line according to claim 1, characterized in that: The second sealing member comprises a sealing block (13), a sealing groove (14), a glue groove (15), a glue injection hole (16) and a solidified colloid (17); a frame-shaped sealing block (13) is provided at a position close to the outer edge of the lower shell (2); a matching sealing groove (14) is provided on the upper cover (1); both the sealing block (13) and the sealing groove (14) are provided with a glue groove (15); the upper cover (1) is provided with a glue injection hole (16) connected to the glue groove (15); after the upper cover (1) and the lower shell (2) are sealed, epoxy resin glue is added into the glue groove (15) through the glue injection hole (16) and solidified to form a solidified colloid (17).

4. The photoelectric coupling device for a signal line according to claim 3, characterized in that: The upper cover (1) and the lower shell (2) are both made of PC material, and the sealing block (13) and the sealing groove (14) are made of PP material. The sealing block (13) and the sealing groove (14) are respectively connected to the lower shell (2) and the upper cover (1) using HY-302AB glue.

5. The photoelectric coupling device for a signal line according to claim 1, characterized in that: Both ends of the U-shaped conductive plate (5) are provided with connection grooves (18), and the upper end of the pin (6) is provided with a connection block (19) adapted to the connection groove (18), and the connection block (19) is snapped into the connection groove (18).

6. The photoelectric coupling device for a signal line according to claim 5, characterized in that: A positioning groove (20) is also provided at the end of the connecting groove (18), and a matching positioning block (21) is provided on the pin (6), and the positioning block (21) is snapped into the positioning groove (20).

7. The photoelectric coupling device for a signal line according to claim 1, characterized in that: The snap-fit ​​assembly comprises a snap-fit ​​groove (22) and a snap-fit ​​block (23); the lower shell (2) is provided with the snap-fit ​​groove (22); the upper cover (1) is provided with a snap-fit ​​block (23) adapted to the snap-fit ​​groove (22); the snap-fit ​​block (23) is inserted into the snap-fit ​​groove (22) to be snap-fitted and fixed.

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