Efp camera interface conversion optical transmission extender
By incorporating an installation sleeve and a flexible shield at the optical extender interface, the problem of dust entering the optical extender due to forgotten or accidental dust cover installation is solved, achieving automatic dust prevention and heat dissipation, and improving the service life and reliability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI CHENGFENG TECH CO LTD
- Filing Date
- 2026-01-19
- Publication Date
- 2026-07-24
AI Technical Summary
Existing dustproof methods for optical extenders are prone to dust entering the interface due to forgetting to cover the dust cover or collisions during handling, which affects the service life.
The system employs mounting sleeves at the interfaces on both sides of the extender body. The first elastic strip drives the mounting sleeves to move away from the extender body. Multiple elastic baffles are spliced together to cover the interfaces. Combined with the design of the locking block and the limiting groove, the baffles automatically cover and are convenient for plugging in when needed.
It effectively prevents dust from entering the interface, reduces damage to the optical extender, improves service life, and ensures the interface's heat dissipation performance through the heat sink design.
Smart Images

Figure CN121887943B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electronic device interface protection and connection, and in particular to an EFP camera interface conversion optical transmission extender. Background Technology
[0002] In the field of modern audio-visual production, EFP cameras, with their portability, flexibility, and ability to produce high-quality audio-visual content, have been widely used in various live events. Especially in large-scale events such as sporting events and variety show recordings, multiple EFP cameras simultaneously film from different angles, presenting viewers with a rich variety of perspectives and greatly enhancing the viewing experience. In lightweight live broadcasting and outdoor shooting scenarios, EFP cameras can also meet the needs of staff for on-site control of shooting angles and on-site power supply, enabling effective video transmission and editing, and driving the development of on-site audio-visual production.
[0003] When connecting EFP cameras to equipment inside the control room or news van, different connection methods are used depending on the shooting scenario. In large settings, each EFP camera is connected to an extension cable via a connector that combines signal, power, and audio cables. This cable is relatively thick and heavy, and then directly connects to the internal equipment. For lightweight live broadcasts and outdoor shooting, the EFP camera only needs to transmit video via an audio cable. Its connector enters one side of the optical extender, which has power and audio interfaces on the other side. An extended audio cable is then used to connect the audio interface to the optical extender in the control room, reducing the cost of extension cables. Additionally, to prevent dust from entering the optical extender interfaces, each interface is typically fitted with a rubber or silicone dust cover, which serves as a dust protection measure when the optical extender is not in use.
[0004] However, existing dust prevention methods for optical extenders have significant drawbacks. When using and recycling optical extenders, workers often forget to replace the dust cover back on the interface; moreover, during transport, accidental bumps can easily cause the dust cover to open automatically. This allows dust to easily enter the optical extender's interface, affecting its lifespan. Summary of the Invention
[0005] To improve the lifespan of optical extenders, this application provides an EFP camera interface conversion optical extender.
[0006] This application provides an EFP camera interface conversion optical extender, which adopts the following technical solution: An EFP camera interface conversion optical transmission extender includes an extender body, with interfaces on both sides of the extender body. An installation sleeve is slidably fitted onto each interface. A first elastic strip is fixedly installed between the installation sleeve and the extender body. The first elastic strip drives the installation sleeve to move away from the extender body. Multiple shielding plates are fixedly installed circumferentially at the end of the installation sleeve away from the extender body. The shielding plates are elastic, and the multiple shielding plates are spliced together to cover the interfaces.
[0007] By adopting the above technical solution, mounting sleeves are fitted on both sides of the interface of the extender body. The first elastic strip drives the mounting sleeve to move away from the extender body. Multiple elastic shielding pieces at the end of the mounting sleeve are spliced together to cover the interface. This can automatically prevent dust from entering the interface when the optical transmission extender is not in use, reducing the occurrence of dust entering the interface due to forgetting to cover the dust cover or collision during transportation.
[0008] Optionally, the interface has a sliding opening, and a middle block slides through the sliding opening. A first locking block is fixedly installed on the side of the middle block facing the outside of the interface. The inner wall of the mounting sleeve has a slot for the first locking block to enter. The side of the first locking block away from the middle block is inclined. The inclined side of the first locking block is used to slide into the interface under the compression of the mounting sleeve. A second locking block is fixedly installed on the side of the middle block away from the first locking block. The side of the second locking block away from the middle block is inclined. The inclined side of the second locking block is used to slide into the slot under the compression of the connector.
[0009] By adopting the above technical solution, a sliding opening is opened in the interface, and the middle block in the sliding opening connects the first locking block and the second locking block. The inclined side of the first locking block can slide into the interface under the extrusion of the installation sleeve, and the inclined side of the second locking block can slide into the slot under the extrusion of the connector. This facilitates locking and positioning when the installation sleeve moves and the connector is inserted, ensuring the stability of the interface connection.
[0010] Optionally, a limiting groove is formed on the side of the intermediate block away from the extender body, and a limiting block is fixedly installed on the inner wall of the sliding port, the limiting block being used to slide inside the limiting groove.
[0011] By adopting the above technical solution, the limiting block is engaged with the limiting groove, thereby reducing the occurrence of the first locking block, the middle block and the second locking block sliding out of the sliding port.
[0012] Optionally, the end of the limiting groove near the first locking block is closed, and the side of the limiting groove near the second locking block is blocked. By adopting the above technical solution, when the shielding plate is worn and needs to be replaced, after the installation sleeve is removed from the interface, since the limiting groove is located at one end of the middle block with an opening, the first locking block, the middle block and the second locking block can be moved toward the outside of the interface and removed together for replacement.
[0013] Optionally, a second elastic strip is fixedly installed on both sides of the shielding plate.
[0014] By adopting the above technical solution, the second elastic strip can enhance the elasticity of the shield and the tightness of the splicing, further improving the dustproof effect on the interface.
[0015] Optionally, the thickness of the second elastic strip is greater than the thickness of the shielding piece, and the shielding piece is connected to the middle of the second elastic strip.
[0016] By adopting the above technical solution, when the mounting sleeve is pushed towards the extender body, the shield rotates to open the interface, thus facilitating the insertion of the connector into the interface. When the shield rotates to open the interface, the shield will cause the second elastic strip to abut against the outer peripheral wall of the interface, and the shield will separate from the outer peripheral wall of the interface, thus facilitating heat dissipation of the interface.
[0017] Optionally, the interface is fitted with a mounting ring, and the extender body is fixedly fitted with multiple mounting rods. The multiple mounting rods are arranged around the interface. The mounting ring has mounting holes for the mounting rods to pass through. The mounting rods are threaded with limiting rings. The first elastic strip is fixedly installed between the mounting ring and the mounting sleeve.
[0018] By adopting the above technical solution, the mounting ring is sleeved on the interface and can be fixed on the extender body by the mounting rod and the limiting ring. The first elastic strip is fixed between the mounting ring and the mounting sleeve. When the baffle is worn, the mounting ring can be removed by disassembling the limiting ring, thereby facilitating the replacement of the mounting sleeve and the baffle.
[0019] Optionally, the end of the mounting rod away from the extender body is extended, and the extension of the mounting rod is used to limit the distance the mounting sleeve moves toward the extender body.
[0020] By adopting the above technical solution, the end of the mounting rod away from the extender body is extended, which can limit the distance the mounting sleeve moves towards the extender body, reduce the mounting sleeve from getting too close to the extender body, and ensure the proper covering and protection effect of the shielding plate on the interface.
[0021] Optionally, the inner wall of the mounting sleeve is provided with a plurality of heat dissipation grooves, which are arranged along the sliding direction of the mounting sleeve.
[0022] By adopting the above technical solution, multiple heat dissipation grooves are opened on the inner wall of the mounting sleeve along its sliding direction, which can increase the air circulation inside the mounting sleeve and facilitate heat dissipation at the interface.
[0023] In summary, this application includes at least one of the following beneficial technical effects: The first elastic strip drives the installation sleeve to stay away from the extender body, so that multiple shielding plates can be spliced together to cover the interface, which can prevent dust from entering the optical transmission extender interface and reduce the impact of dust entering the interface on the normal use and service life of the optical transmission extender. By setting a second elastic strip on both sides of the shielding plate, the sealing performance of the interface after the shielding plates are spliced together is improved. At the same time, after the installation sleeve slides towards the extension body, the first elastic strip abuts against the periphery of the interface, leaving space between the shielding plate and the periphery of the interface, thereby facilitating heat dissipation. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 yes Figure 1 Enlarged view at point A; Figure 3 This is a structural diagram of the interface and mounting sleeve of the embodiment you applied for; Figure 4 yes Figure 3 Sectional view at AA; Figure 5 yes Figure 4 Enlarged view at point B.
[0025] Explanation of reference numerals in the attached drawings: 1. Extender body; 2. Interface; 3. Mounting sleeve; 4. Mounting ring; 5. First elastic strip; 6. Shielding plate; 7. Mounting rod; 8. Mounting hole; 9. Limiting ring; 10. Second elastic strip; 11. Heat dissipation groove; 12. Sliding port; 13. Intermediate block; 14. First locking block; 15. Second locking block; 16. Locking groove; 17. Limiting groove; 18. Limiting block. Detailed Implementation
[0026] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.
[0027] This application discloses an EFP camera interface 2 conversion optical transmission extender.
[0028] Reference Figure 1 , Figure 2 An EFP camera interface 2 conversion optical transmission extender includes an extender body 1, with interfaces 2 on both sides of the extender body 1. The interface 2 on one side of the extender body 1 is used to connect to an EFP camera, and the interface 2 on the other side of the extender body 1 is used to connect a power cable and an audio signal cable.
[0029] Reference Figure 1 , Figure 2The interface 2 is fitted with a mounting sleeve 3 and a mounting ring 4, with the mounting ring 4 located at the end of the mounting sleeve 3 near the extender body 1. A first elastic strip 5 is fixedly installed between the mounting ring 4 and the mounting sleeve 3, and the first elastic strip 5 is used to push the mounting sleeve 3 away from the extender body 1. A plurality of baffles 6 are fixedly installed circumferentially at the end of the mounting sleeve 3 away from the extender body 1, and the baffles 6 are elastic.
[0030] The extender body 1 is fixedly mounted with multiple mounting rods 7, which surround the interface 2. The mounting ring 4 has mounting holes 8 for the mounting rods 7 to pass through, and the mounting rods 7 are threaded with limiting rings 9. The end of the mounting rod 7 away from the extender body 1 is extended.
[0031] Initially, the shielding piece 6 bends and abuts against the interface 2 under the action of elasticity, so that multiple shielding pieces 6 are spliced together to cover the interface 2.
[0032] When it is necessary to insert the connector into the interface 2, press the mounting sleeve 3 to move it towards the extender body 1. The mounting sleeve 3 moves the blocking plate 6 together, and the blocking plate 6 and the interface 2 are pressed against each other, so that the blocking plate 6 rotates away from the interface 2 and opens the interface 2, thus facilitating the insertion of the connector into the interface 2. The extended part of the mounting rod 7 is used to limit the sliding distance of the mounting sleeve 3.
[0033] When the connector is pulled out of the interface 2, the first elastic strip 5 moves the mounting sleeve 3 away from the extender body 1, and then the shielding plate 6 returns to its original position to cover the interface 2. By automatically restoring the shielding plate 6 to cover the interface 2 after the connector is pulled out, the occurrence of dust entering the interface 2 due to forgetting to put on the dust cover or collisions during handling is reduced.
[0034] Reference Figure 2 A second elastic strip 10 is fixedly installed on both sides of the shielding plate 6. When the shielding plate 6 covers the interface 2, the second elastic strips 10 between adjacent shielding plates 6 are squeezed against each other, thereby improving the sealing performance of the shielding plate 6 after covering the interface 2 and reducing the occurrence of dust entering the interior of the interface 2.
[0035] Reference Figure 3 , Figure 4 The thickness of the second elastic strip 10 is greater than the thickness of the shielding plate 6, and the shielding plate 6 is connected to the middle of the second elastic strip 10. Multiple heat dissipation grooves 11 are provided on the inner wall of the mounting sleeve 3, and the heat dissipation grooves 11 are arranged along the sliding direction of the mounting sleeve 3. When the shielding plate 6 rotates away from the extender body 1 and the interface 2 is opened, the second elastic strip 10 abuts against the outer peripheral wall of the interface 2, thus leaving space between the shielding plate 6 and the interface 2. Combined with the heat dissipation grooves 11, this facilitates heat dissipation from the interface 2.
[0036] Reference Figure 4 , Figure 5Interface 2 has a sliding opening 12, and an intermediate block 13 slides through the sliding opening 12. A first locking block 14 is fixedly installed on the side of the intermediate block 13 facing the outside of interface 2, and a slot 16 is opened on the inner wall of the mounting sleeve 3 for the first locking block 14 to enter. The side of the first locking block 14 away from the intermediate block 13 is inclined, and the inclined side of the first locking block 14 is used to slide into the interface 2 under the compression of the mounting sleeve 3. A second locking block 15 is fixedly installed on the side of the intermediate block 13 away from the first locking block 14, and the inclined side of the second locking block 15 is used to slide into the slot 16 under the compression of the connector.
[0037] When the mounting sleeve 3 is pushed towards the extender body 1 and pressed against the mounting rod 7, the slot 16 aligns with the sliding port 12. Then, when the connector is inserted into the interface 2, the connector presses against the inclined side of the second locking block 15, causing the first locking block 14 to slide inside the slot 16. The engagement of the first locking block 14 with the inner wall of the slot 16 restricts the first elastic strip 5 from causing the mounting sleeve 3 to slide away from the extender body 1. Simultaneously, the pressing of the first locking block 14 against the slot 16 causes the second locking block 15 to press the connector firmly, thereby improving the stability of the connector insertion into the interface 2.
[0038] When the connector is pulled out of the interface 2, the inner wall of the slot 16 is pressed against the first locking block 14, thereby causing the first locking block 14 to move into the interface 2, which in turn facilitates the first elastic strip 5 to drive the mounting sleeve 3 away from the extender body 1.
[0039] Reference Figure 4 , Figure 5 A limiting groove 17 is formed on the side of the intermediate block 13 away from the extender body 1. A limiting block 18 is fixedly installed on the inner wall of the sliding port 12, and the limiting block 18 is used to slide inside the limiting groove 17. The end of the limiting groove 17 near the first locking block 14 is sealed, and the end of the limiting groove 17 near the second locking block 15 is open. The cooperation between the limiting groove 17 and the limiting block 18 reduces the possibility of the intermediate block 13 and the first locking block 14 sliding into the interface 2 from the sliding port 12 after the connector is pulled out of the interface 2. When the shielding plate 6 is worn and replaced, and the mounting sleeve 3 is removed from the interface 2, because the limiting groove 17 is located at the open end of the intermediate block 13, the first locking block 14, the intermediate block 13, and the second locking block 15 can be moved toward the outside of the interface 2 and removed together for replacement.
[0040] The implementation principle of the EFP camera interface 2 conversion optical transmission extender in this application embodiment is as follows: When the optical transmission extender is not in use, the elastic force of the first elastic strip 5 drives the mounting sleeve 3 to move away from the extender body 1, causing multiple shielding plates 6 to interlock and cover the interface 2, effectively preventing dust from entering. When the optical transmission extender is needed, the connector is inserted into the interface 2, and the connector presses against the second locking block 15, causing the first locking block 14 to enter the locking slot 16, thus fixing the mounting sleeve 3. The mounting rod 7 and the limiting ring 9 facilitate the installation and adjustment of the first elastic strip 5, and the extended mounting rod 7 can also limit the movement distance of the mounting sleeve 3. The design of the heat dissipation groove 11 improves the heat dissipation performance of the interface 2, ensuring the normal use of the optical transmission extender.
[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. An EFP camera interface (2) conversion optical transmission extender, characterized in that: The device includes an extender body (1), with interfaces (2) on both sides. An installation sleeve (3) is slidably fitted onto the interface (2). A first elastic strip (5) is fixedly installed between the installation sleeve (3) and the extender body (1). The first elastic strip (5) is used to drive the installation sleeve (3) to move away from the extender body (1). Multiple shielding pieces (6) are fixedly installed circumferentially at one end of the installation sleeve (3) away from the extender body (1). The shielding pieces (6) are elastic, and the multiple shielding pieces (6) are spliced together to cover the interface (2). The interface (2) has a sliding opening (12), and a middle block (13) slides through the sliding opening (12). A first locking block (14) is fixedly installed on the side of the middle block (13) facing the outside of the interface (2). A slot (16) is opened on the inner wall of the mounting sleeve (3) for the first locking block (14) to enter. The side of the first locking block (14) away from the middle block (13) is inclined. The inclined side of the first locking block (14) is used to slide into the interface (2) under the pressure of the mounting sleeve (3). A second locking block (15) is fixedly installed on the side of the middle block (13) away from the first locking block (14). The side of the second locking block (15) away from the middle block (13) is inclined. The inclined side of the second locking block (15) is used to slide into the slot (16) under the pressure of the connector. The second elastic strip (10) is fixedly installed on both sides of the shielding plate (6). The thickness of the second elastic strip (10) is greater than the thickness of the shielding piece (6), and the shielding piece (6) is connected to the middle of the second elastic strip (10); When the connector is inserted into the interface (2), press the mounting sleeve (3) to move towards the extension body (1). The mounting sleeve (3) drives the shield (6) to move together. The shield (6) and the interface (2) are pressed against each other, so that the shield (6) moves away from the interface (2) and opens the interface 2 after rotation. When the connector is pulled out from the interface (2), the first elastic strip (5) causes the mounting sleeve (3) to move away from the extender body (1), and then the shielding plate (6) restores the shielding of the interface (2).
2. The EFP camera interface (2) conversion optical extender according to claim 1, characterized in that: A limiting groove (17) is provided on the side of the intermediate block (13) away from the extender body (1), and a limiting block (18) is fixedly installed on the inner wall of the sliding port (12). The limiting block (18) is used to slide inside the limiting groove (17).
3. The EFP camera interface (2) conversion optical extender according to claim 2, characterized in that: The limiting groove (17) is closed at one end near the first locking block (14), and the limiting groove (17) is blocked at the other side near the second locking block (15).
4. The EFP camera interface (2) conversion optical extender according to claim 1, characterized in that: The interface (2) is fitted with an installation ring (4), and the extender body (1) is fixedly fitted with multiple installation rods (7). The multiple installation rods (7) are arranged around the interface (2). The installation ring (4) has an installation hole (8) for the installation rods (7) to pass through. The installation rods (7) are threaded with a limiting ring (9). The first elastic strip (5) is fixedly installed between the installation ring (4) and the installation sleeve (3).
5. An EFP camera interface (2) conversion optical extender according to claim 4, characterized in that: The mounting rod (7) is extended at one end away from the extender body (1), and the extension of the mounting rod (7) is used to limit the distance that the mounting sleeve (3) can move toward the extender body (1).
6. An EFP camera interface (2) conversion optical extender according to claim 1, characterized in that: The inner wall of the mounting sleeve (3) is provided with a plurality of heat dissipation grooves (11), which are arranged along the sliding direction of the mounting sleeve (3).