Optical fiber connector, tail fiber and signal acquisition equipment

Abstract

The embodiment of the utility model provides an optical fiber connector, a tail fiber and signal acquisition equipment, which are used for improving the connection efficiency of the tail fiber and the signal acquisition equipment on the premise of ensuring the sealing performance. The optical fiber connector provided by the embodiment of the utility model comprises an optical fiber hole, and a first outer vertical surface, a first step surface and a second outer vertical surface which are connected in sequence. The first outer vertical face and the second outer vertical face are coaxial with the optical fiber hole, the radial size of the second outer vertical face is larger than that of the first outer vertical face, and the first outer vertical face and the second outer vertical face are used for being matched with a first mounting hole and a second mounting hole of signal acquisition equipment. The optical fiber connector further comprises a sealing ring limiting area and a first limiting structure. The first limiting structure and the first step surface are located at different positions in the axial direction of the optical fiber hole, and the first limiting structure is used for limiting the axial position of the optical fiber connector relative to the signal acquisition equipment after being matched with a second limiting structure of the signal acquisition equipment. The sealing ring limiting area is connected with the first outer vertical face and used for fixing the flexible sealing ring.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical fiber, in particular to an optical fiber connector, a pigtail and a signal acquisition device. BACKGROUND

[0002] Optical fiber is an important component for transmitting optical signals. In the process of connecting optical fiber with communication and image acquisition devices, the optical fiber needs to be inserted into the device to connect with the internal optical communication line of the device.

[0003] In outdoor camera and precision instrument scenarios, the sealing requirement of the device is high. Therefore, at the position where the optical fiber is connected with the device, a special connection structure is needed to ensure the sealing, so as to prevent water and dirt from the outside from entering the interior of the device through the connection between the optical fiber and the device.

[0004] The current connection structure usually reserves a gap at the connection between the device and the optical fiber, and the gap is filled with glue which is then solidified, so as to ensure the sealing of the device. This processing technology is called dispensing process.

[0005] However, due to the complex operation of the dispensing process, the long curing time of the glue, and the difficulty in dispensing glue inside the cylinder, the process efficiency of connecting the optical fiber with the device on the production line is low. There is an urgent need for a new connection structure to achieve efficient connection. INVENTION CONTENTS

[0006] The embodiments of the present application provide an optical fiber connector, a pigtail and a signal acquisition device, which are used to improve the connection efficiency of the pigtail and the signal acquisition device under the premise of ensuring the sealing.

[0007] In a first aspect, the present application provides an optical fiber connector, which comprises an optical fiber hole and a first outer surface, a first stepped surface and a second outer surface connected in sequence. The optical fiber hole is used to fix the optical fiber. The first outer surface and the second outer surface are coaxial with the optical fiber hole, and the radial dimension of the second outer surface is greater than that of the first outer surface. The first outer surface and the second outer surface are used to cooperate with the first mounting hole and the second mounting hole of the signal acquisition device. The optical fiber connector further comprises a sealing ring limiting area and a first limiting structure. The first limiting structure is at different positions of the first stepped surface in the axial direction of the optical fiber hole, and the first limiting structure is used to limit the axial position of the optical fiber connector relative to the signal acquisition device after cooperating with the second limiting structure of the signal acquisition device. The sealing ring limiting area is connected with the first outer surface, and the sealing ring limiting area is used to fix the flexible sealing ring.

[0008] In the embodiment of the present application, the first outer surface of the fiber connector is matched with the first mounting hole of the signal acquisition device, and the sealing ring limiting area connected with the first outer surface is used to fix the flexible sealing ring. After the fiber connector is matched with the signal acquisition device, the flexible sealing ring is in contact with the sealing ring limiting area of the fiber connector inwardly and in contact with the first mounting hole of the signal acquisition device outwardly in the radial direction. As long as the axial distance between the fiber connector and the signal acquisition device is reasonably set, the flexible sealing ring is extruded in the axial direction, the flexible sealing ring is expanded in the radial direction, the sealing ring limiting area and the first mounting hole are extruded, the sealing ring limiting area, the sealing ring limiting area and the first mounting hole become the sealing end face, and sealing is realized.

[0009] In the embodiment of the present application, the flexible sealing ring only needs to be installed when the fiber connector is connected with the signal acquisition device, and sealing can be realized, and the assembly process is simple. Moreover, since the structure does not need to be sealed by glue, the process of curing the glue can be avoided, and the processing time can be saved. Moreover, the flexible sealing ring is not a one-time cured structure, and if the assembly is wrong, it can be reworked, thereby improving the product yield and reducing the cost.

[0010] In an optional implementation, the sealing ring limiting area includes one or more grooves opened on the first outer surface, and the one or more grooves are used to fix the flexible sealing ring.

[0011] In the embodiment of the present application, one or more grooves are arranged on the fiber connector to fix the flexible sealing ring. As long as a flexible sealing ring with a proper size (the inner diameter of the sealing ring is slightly smaller than the inner diameter of the groove) is selected, the flexible sealing ring can be fixed in the groove by using the tension of the flexible sealing ring, and the position of the flexible sealing ring does not need to be adjusted separately in the subsequent assembly process, the operation process can be simplified, and the production efficiency can be improved.

[0012] In an optional implementation, the sealing ring limiting area includes a first stepped surface, and the first stepped surface is used to fix the flexible sealing ring.

[0013] In the embodiment of the present application, as long as the flexible sealing ring is sleeved on the first outer surface of the fiber connector during assembly, the position of the flexible sealing ring can be fixed, and the flexible sealing ring is naturally extruded between the first stepped surface and the second stepped surface as the fiber connector is inserted into the shell and matched with the shell. The position of the flexible sealing ring does not need to be adjusted separately in the subsequent assembly process, the operation process can be simplified, and the production efficiency can be improved.

[0014] In an optional implementation, the first limiting structure comprises a first inclined ladder surface and a first clamping groove, and the first clamping groove connects the first inclined ladder surface and the first outer surface. The radial dimension of the first inclined ladder surface increases as the distance between the first inclined ladder surface and the first ladder surface decreases. The radial dimension of the first clamping groove is smaller than the radial dimension of the end of the first inclined ladder surface close to the first ladder surface. The first clamping groove is used to accommodate a plurality of buckles on the signal acquisition device, and the first inclined ladder surface is used for the plurality of buckles to slide into the first clamping groove.

[0015] In the embodiments of the present application, the optical fiber connector is guided by the first inclined ladder surface to slide the plurality of buckles on the shell into the first clamping groove, thereby limiting the movement of the optical fiber connector relative to the signal acquisition device in the direction towards the second ladder surface (for example, to the right in the figure Figure 6 ). The cooperation of the first ladder surface and the second ladder surface limits the movement of the optical fiber connector relative to the signal acquisition device in the direction away from the second ladder surface (for example, to the left in the figure Figure 6 ). Thus, the axial positional relationship between the optical fiber connector and the signal acquisition device is fixed. Due to the simple cooperation of the first inclined ladder surface and the second inclined ladder surface (the two inclined ladder surfaces are simply overlapped), the connection process of the optical fiber connector and the signal acquisition device is simple, and the production efficiency is improved.

[0016] In an optional implementation, the distance d1 between the end of the first inclined ladder surface close to the first ladder surface and the first ladder surface, the distance d2 between the limiting surface of the plurality of buckles on the signal acquisition device and the second ladder surface, and the thickness d3 of the flexible sealing ring satisfy d1 < d2 + d3.

[0017] In the embodiments of the present application, d1 < d2 + d3 is satisfied, so that the flexible sealing ring is pressed by the first ladder surface and the second ladder surface, and sealing is achieved.

[0018] In an optional implementation, the first limiting structure comprises one or more limiting holes on the first ladder surface.

[0019] In a second aspect, the present application provides a pigtail, which comprises an optical fiber and an optical fiber connector. The optical fiber connector is the optical fiber connector described in the first aspect or the optional implementation of the first aspect. The optical fiber cooperates with the fiber hole of the optical fiber connector.

[0020] Thirdly, this application provides a signal acquisition device, which includes a housing. The housing includes a first mounting hole, a second stepped surface, and a second mounting hole connected in sequence. The diameter of the second mounting hole is larger than the diameter of the first mounting hole, and the first and second mounting holes are used to mate with a first and a second outer surface of an optical fiber connector. The housing also includes a second limiting structure, which is located at a different position axially from the second stepped surface of the first mounting hole. The second limiting structure is used to limit the axial position of the optical fiber connector relative to the signal acquisition device after mates with the first limiting structure of the optical fiber connector.

[0021] In this embodiment, the first and second outer surfaces of the fiber optic connector mate with the first and second mounting holes of the signal acquisition device, restricting the radial movement of the fiber optic connector relative to the signal acquisition device. The first stepped surface of the fiber optic connector mates with the second stepped surface of the signal acquisition device, and the first limiting structure of the fiber optic connector mates with the second limiting structure of the signal acquisition device; thereby restricting the axial movement between the fiber optic connector and the signal acquisition device. This achieves the fixation of the radial and axial positions of the fiber optic connector relative to the signal acquisition device.

[0022] In one alternative implementation, the signal acquisition device is a camera.

[0023] In one optional implementation, the second limiting structure includes a plurality of latches connected to the first mounting hole, the plurality of latches being equidistant from the second stepped surface. The plurality of latches include a second inclined trapezoidal surface and a limiting surface, the second inclined trapezoidal surface being located between the limiting surface and the second stepped surface. The radial dimension of the second inclined trapezoidal surface increases with the increase of the distance from the second stepped surface. The radial dimension of the limiting surface is smaller than the radial dimension of the second inclined trapezoidal surface at the end closest to the limiting surface.

[0024] In one alternative implementation, the second limiting structure further includes multiple latching extension arms, with the multiple latches located between the first mounting hole and the multiple extension arms.

[0025] In this embodiment, after assembling the fiber optic connector and the housing, if disassembly is required, a tool is inserted between the multiple extension arms, such that the radial (e.g.,) of the multiple extension arms... Figure 10 Increasing the distance (vertical direction) in the center causes the radial distance of multiple clips to increase, making it greater than the radial dimension of the first inclined trapezoidal surface, thus enabling the fiber optic connector to be disassembled from the shell. This facilitates maintenance and replacement, extending service life. Furthermore, in case of assembly errors, disassembly and rework are possible, improving product yield and production efficiency.

[0026] In one alternative implementation, the second limiting structure includes one or more limiting posts on the second stepped surface.

[0027] The beneficial effects of the second and third aspects are described in the first aspect and will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 A structural schematic diagram of a camera provided for the present application;

[0029] Figure 2 A structural schematic diagram of a fiber connector provided for an embodiment of the present application;

[0030] Figure 3 A structural schematic diagram of a shell of a signal acquisition device provided for an embodiment of the present application;

[0031] Figure 4 A sectional structural schematic diagram of a fiber connector provided for an embodiment of the present application;

[0032] Figure 5a A sectional structural schematic diagram of a shell of a signal acquisition device provided for an embodiment of the present application;

[0033] Figure 5b Another sectional structural schematic diagram of a shell of a signal acquisition device provided for an embodiment of the present application;

[0034] Figure 5c A structural schematic diagram of an inner side view of a shell of a signal acquisition device provided for an embodiment of the present application;

[0035] Figure 6 An assembly structural schematic diagram of a fiber connector and a shell provided for an embodiment of the present application;

[0036] Figure 7a An assembly process schematic diagram of a fiber connector and a shell provided for an embodiment of the present application;

[0037] Figure 7b Another assembly process schematic diagram of a fiber connector and a shell provided for an embodiment of the present application;

[0038] Figure 7c An assembled structural schematic diagram of a fiber connector and a shell provided for an embodiment of the present application;

[0039] Figure 8 Another assembly structural schematic diagram of a fiber connector and a shell provided for an embodiment of the present application;

[0040] Figure 9 A size schematic diagram of an assembly of a fiber connector and a shell provided for an embodiment of the present application;

[0041] Figure 10 A structural schematic diagram of a shell including an extension arm provided for an embodiment of the present application;

[0042] Figure 11 A structural diagram of a fiber connector including a limiting hole is provided for an embodiment of the present application.

[0043] Figure 12 A structural diagram of a shell including a limiting column is provided for an embodiment of the present application. DETAILED DESCRIPTION

[0044] The embodiments of the present application are described below with reference to the accompanying drawings. Those skilled in the art can know that, as technology develops and new scenarios appear, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0045] The terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, and this is only a way of distinguishing the objects with the same attributes used in the description of the embodiments of the present application. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, so that a process, method, system, product or device that includes a series of units does not have to be limited to those units, but can include other units that are not clearly listed or inherent to these processes, methods, products or devices. In addition, "at least one" means one or more, and "multiple" means two or more. "And / or" describes the relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the cases of A alone, A and B together, and B alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects. "At least one of the following" or similar expressions means any combination of these items, including any combination of single or multiple items. For example, at least one of a, b, or c can represent a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, and c can be single or multiple.

[0046] Optical fiber is an important component for transmitting optical signals. Image acquisition devices such as cameras need to be connected to optical fibers to achieve transmission of optical signals. Optical fibers usually need to be inserted into the device to achieve connection with the optical path inside the device.

[0047] Figure 1 A structural diagram of a camera is provided. As shown in Figure 1As shown, the camera includes a shell, a dust cover, and an optical path (including a lens, a lens, a photoelectric detector, etc.) inside the shell, a communication line (including a processing chip, an optical emitter, etc.). The camera collects image signals through the lens, converts them into electrical signals through the photoelectric detector, and converts them into optical signals through the processing chip and the optical emitter.

[0048] The pigtail includes an optical fiber connector and an optical fiber. The optical fiber of the pigtail extends into the camera shell and is connected to the optical emitter inside the camera to realize the transmission of optical signals. The optical fiber connector of the pigtail is connected to the optical fiber inside and connected to the shell of the camera outside to realize the fixation between the optical fiber and the camera.

[0049] The optical emitter inside the camera can be considered as part of the optical communication line inside the camera. The pigtail (optical fiber) is connected to the optical emitter inside the camera, thereby realizing the connection with the optical communication line inside the camera. In addition to the camera, the pigtail can also extend into other types of devices and be connected to the optical communication line inside the device. Optionally, the optical communication line can transmit optical communication signals (such as optical signals converted from processed electrical signals), or optical signals collected by the device (such as optical spectrum signals obtained by the spectrometer after being transmitted or reflected by the measured substance), etc. The present application does not limit this.

[0050] In outdoor camera, precision instrument and other scenarios, in order to prevent water, external dirt (such as water vapor, dust, etc.) and other interference to the operation of the internal devices of the equipment, the sealing requirement of the equipment is relatively high. Therefore, at the position where the optical fiber is connected with the equipment (i.e. Figure 1 The position of the optical fiber connector in the above-mentioned optical fiber connector needs to be sealed by a special connection structure.

[0051] Currently, the sealing of the connection between the optical fiber and the equipment is usually ensured by the dispensing process. The dispensing process is to reserve a gap between the shell of the equipment and the optical fiber connector, and to ensure the sealing of the connection by dispensing glue into the gap and curing the glue.

[0052] However, the dispensing process has some disadvantages. For example: it needs to be glued, and the operation is complex; the curing time of the glue is relatively long, resulting in low processing efficiency; the shell of the camera and other equipment is a relatively long cylinder, and the dispensing process needs to be glued from the inside of the cylinder, which is difficult to operate; the glue cannot be adjusted after curing, resulting in no repair; the aging of the glue will affect the sealing, increase the risk of water entering the equipment, and thus affect the service life of the equipment.

[0053] In summary, due to the complex operation, long curing time and difficult operation of dispensing glue in the cylinder of the dispensing process, the process efficiency of connecting the optical fiber with the equipment on the production line is low. Therefore, a new connection structure is needed to realize efficient connection.

[0054] In order to realize efficient connection between the optical fiber and the device under the premise of ensuring the sealing of the connection, the embodiment of the application provides an optical fiber connector, a pigtail and a camera. The optical fiber connector provided by the embodiment of the application simplifies the connection process of the optical fiber and the device by arranging the sealing ring limiting area for accommodating the sealing ring and the axial limiting structure, and realizes efficient production.

[0055] Figure 2 The structural schematic diagram of the optical fiber connector provided by the embodiment of the application is shown in FIG. 2. As shown in FIG. 2, the optical fiber connector 2000 includes an optical fiber hole 2100, and a first outer surface 2200, a first stepped surface 2300 and a second outer surface 2400 connected in sequence. Figure 2

[0056] The optical fiber hole 2100 is used for fixing the optical fiber. Optionally, the optical fiber hole 2100 can include an optical fiber section and a core section, and the aperture of the core section is smaller than that of the optical fiber section. The optical fiber section is used for fixing the optical fiber containing the cladding layer, and the core section is used for fixing the core.

[0057] The first outer surface 2200 and the second outer surface 2400 are coaxial with the optical fiber hole 2100. The radial dimension of the second outer surface 2400 is greater than that of the first outer surface 2200.

[0058] Figure 3 The structural schematic diagram of the signal acquisition device matched with the optical fiber connector 2000 is shown in FIG. 3. As shown in FIG. 3, the shell 3000 of the signal acquisition device includes a first mounting hole 3100, a second stepped surface 3200 and a second mounting hole 3300 connected in sequence. The aperture of the second mounting hole 3300 is greater than that of the first mounting hole 3100. Figure 3

[0059] The first outer surface 2200 and the second outer surface 2400 of the optical fiber connector 2000 are used for matching with the first mounting hole 3100 and the second mounting hole 3300 of the shell 3000 of the signal acquisition device.

[0060] Optionally, the first outer surface 2200 and the second outer surface 2400 can be cylindrical surfaces, and the radial dimension is the radial radius or diameter of the cylindrical surface. It is worth noting that in addition to the cylindrical surface, the first outer surface 2200 and the second outer surface 2400 can also be other shapes of cylindrical surfaces, such as square cylindrical surfaces, elliptical cylindrical surfaces, etc., which are not limited by the application.

[0061] ​​Since the first mounting hole 3100 and the second mounting hole 3300 of the housing 3000 mate with the first outer surface 2200 and the second outer surface 2400 of the fiber optic connector 2000, the shape and size of the mounting holes match those of the outer surfaces. For example, if the first outer surface 2200 is a cylindrical surface with a diameter of 5 mm, then the first mounting hole 3100 is a circular hole with a diameter of 5 mm. If the outer surface is another cylindrical surface (e.g., a square cylinder or an elliptical cylinder), then the mounting hole is also a cylinder of the corresponding shape.

[0062] The first stepped surface 2300 of the fiber optic connector 2000 is used to mate with the second stepped surface 3200 of the housing 3000 of the signal acquisition device.

[0063] Optionally, the first stepped surface 2300 can directly mate with the second stepped surface 3200, or it can mate with the second stepped surface 3200 through a flexible sealing ring. This application does not limit this.

[0064] like Figure 2 As shown, the fiber optic connector 2000 also includes a sealing ring limiting area 2500 and a first limiting structure 2600. The first limiting structure 2600 and the first stepped surface 2300 are located at different positions along the axial direction of the fiber optic hole 2100.

[0065] like Figure 3 As shown, the housing 3000 also includes a second limiting structure 3400, which is located at a different position from the second stepped surface 3200 in the axial direction of the first mounting hole 3100.

[0066] The first limiting structure 2600 of the fiber optic connector 2000 is used to limit the axial position of the fiber optic connector 2000 relative to the signal acquisition device after engaging with the second limiting structure 3400 of the housing 3000 of the signal acquisition device.

[0067] In this embodiment, the first outer surface 2200 and the second outer surface 2400 of the fiber optic connector 2000 mate with the first mounting hole and the second mounting hole of the signal acquisition device, restricting the radial movement of the fiber optic connector 2000 relative to the signal acquisition device. The first stepped surface 2300 of the fiber optic connector 2000 mates with the second stepped surface of the signal acquisition device, and the first limiting structure 2600 of the fiber optic connector 2000 mates with the second limiting structure of the signal acquisition device; thereby restricting the axial movement between the fiber optic connector 2000 and the signal acquisition device. This achieves the fixation of the radial and axial positions of the fiber optic connector 2000 relative to the signal acquisition device.

[0068] The sealing ring limiting area 2500 is connected to the first outer facade 2200, and the sealing ring limiting area 2500 is used to fix the flexible sealing ring.

[0069] In the embodiment of the present application, the first outer surface 2200 of the fiber connector 2000 is matched with the first mounting hole of the signal acquisition device, and the sealing ring limiting area 2500 connected with the first outer surface 2200 is used to fix the flexible sealing ring. Therefore, after the fiber connector 2000 is matched with the signal acquisition device, the flexible sealing ring is in contact with the sealing ring limiting area 2500 of the fiber connector 2000 radially inwardly and is in contact with the first mounting hole of the signal acquisition device radially outwardly. As long as the axial distance between the fiber connector 2000 and the signal acquisition device is reasonably set, the flexible sealing ring is extruded in the axial direction, the flexible sealing ring is expanded in the radial direction, the sealing ring limiting area 2500 and the first mounting hole are extruded, the sealing ring limiting area 2500, the sealing ring limiting area 2500 and the first mounting hole become the sealing end face, and the sealing is realized.

[0070] In the embodiment of the present application, the flexible sealing ring only needs to be installed when the fiber connector 2000 is connected with the signal acquisition device, and the sealing can be realized, and the assembly process is simple. Moreover, since the structure does not need to be sealed by glue, the process of curing the glue can be avoided, and the processing time can be saved. Moreover, the flexible sealing ring is not a one-time cured structure, and if the assembly is wrong, it can be reworked, thereby improving the product yield and reducing the cost.

[0071] In the embodiment of the present application, the first limiting structure 2600 can be a buckle, a limiting ring or the like, which will be described in turn.

[0072] I. The first limiting structure 2600 is a buckle.

[0073] Figure 4 is a sectional structure schematic view of the fiber connector 2000. As shown in Figure 4 , the first limiting structure 2600 includes a first inclined stepped surface 2610 and a first clamping groove 2620, and the first clamping groove 2620 connects the first inclined stepped surface 2610 and the first outer surface 2200.

[0074] In Figure 4 , the up-down direction is the radial direction, and the left-right direction is the axial direction. As shown in Figure 4 , the radial dimension of the first inclined stepped surface 2610 increases as the distance between the first inclined stepped surface 2610 and the first stepped surface 2300 decreases, that is, the radial dimension is larger on the right side. Figure 4

[0075] The radial dimension of the first clamping groove 2620 is smaller than the end of the first inclined stepped surface 2610 close to the first stepped surface 2300. Figure 3 ​The radial dimension of the first inclined step surface 2610 increases as the distance between the first inclined step surface 2610 and the second step surface 3200 increases, i.e., the radial dimension of the first inclined step surface 2610 increases as the first inclined step surface 2610 moves to the left.

[0076] Figure 5a And Figure 5b is a cross-sectional structure diagram of the shell 3000 corresponding to the left side view of the shell 3000 shown in FIG. 3B. Figure 4 is a cross-sectional structure diagram of the shell 3000 corresponding to the left side view of the shell 3000 shown in FIG. 3B. Figure 5c is an internal perspective view of the shell 3000. As shown in FIG. 3D, the second limiting structure 3400 includes a plurality of buckles 3410 connected to the first mounting hole 3100, and the plurality of buckles 3410 are equidistant from the second step surface 3200. Figure 5a As shown in FIG. 3E, the plurality of buckles 3410 include a second inclined step surface 3411 and a limiting surface 3412, and the second inclined step surface 3411 is located between the limiting surface 3412 and the second step surface 3200.

[0077] Figure 5b As shown in FIG. 3E, the plurality of buckles 3410 include a second inclined step surface 3411 and a limiting surface 3412, and the second inclined step surface 3411 is located between the limiting surface 3412 and the second step surface 3200.

[0078] In the following description, the up-down direction is the radial direction, and the left-right direction is the axial direction. As shown in FIG. 3F, the radial dimension of the second inclined step surface 3411 increases as the distance between the second inclined step surface 3411 and the second step surface 3200 increases, i.e., the radial dimension of the second inclined step surface 3411 increases as the second inclined step surface 3411 moves to the left. Figure 5b Figure 5b As shown in FIG. 3F, the radial dimension of the second inclined step surface 3411 increases as the distance between the second inclined step surface 3411 and the second step surface 3200 increases, i.e., the radial dimension of the second inclined step surface 3411 increases as the second inclined step surface 3411 moves to the left. Figure 5b The radial dimension of the limiting surface 3412 is less than the radial dimension of the second inclined step surface 3411 at the end of the second inclined step surface 3411 closest to the limiting surface 3412 (i.e., the left end of the second inclined step surface 3411). That is, the radial dimension of the second inclined step surface 3411 increases as it gets closer to the limiting surface 3412, and the radial dimension decreases abruptly at the limiting surface 3412.

[0079] Figure 5b As shown in FIG. 3G and FIG. 3H, the first inclined step surface 2610 of the fiber connector 2000 is consistent with the inclination direction of the second inclined step surface 3411 of the shell 3000.

[0080] As shown in FIG. 3G and FIG. 3H, the first inclined step surface 2610 of the fiber connector 2000 is consistent with the inclination direction of the second inclined step surface 3411 of the shell 3000. Figure 4 Figure 5b As shown in FIG. 3G and FIG. 3H, the first inclined step surface 2610 of the fiber connector 2000 is consistent with the inclination direction of the second inclined step surface 3411 of the shell 3000. Figure 6 is a structure diagram of the fiber connector 2000 and the shell 3000 after assembly. As shown in FIG. 3I, in the process of assembly, the fiber connector 2000 moves to the left and is inserted into the shell 3000. In the process of inserting the fiber connector 2000 into the shell 3000, the plurality of buckles 3411 of the shell 3000 can slide along the first inclined step surface 2610 of the fiber connector 2000 and enter the first clamping groove 2620. The first clamping groove 2620 is used to accommodate the plurality of buckles 2620. Figure 6

[0081] ​​​​​In this embodiment, the fiber optic connector 2000, guided by the first inclined trapezoidal surface 2610, slides multiple latches 3411 on the housing 3000 into the first slot 2620, restricting the fiber optic connector 2000 relative to the signal acquisition device in the direction toward the second stepped surface 3200. Figure 6 (Middle is facing right) movement; the cooperation between the first stepped surface 2300 and the second stepped surface 3200 restricts the fiber optic connector 2000 relative to the signal acquisition device in the direction away from the second stepped surface 3200. Figure 6 The fiber optic connector 2000 moves to the left, thus fixing the axial positional relationship between the fiber optic connector 2000 and the signal acquisition device. Because the first inclined trapezoidal surface 2610 and the second inclined trapezoidal surface 3411 have a simple fit (the two inclined trapezoidal surfaces simply overlap), the connection process between the fiber optic connector 2000 and the signal acquisition device is simple, improving production efficiency.

[0082] In this embodiment of the application, the sealing ring limiting area 2500 of the fiber optic connector 2000 can be as follows: Figures 2 to 6 The diagram shows one or more grooves 2510. One or more grooves 2510 are formed on the first outer surface 2200, and the one or more grooves 2510 are used to fix the flexible sealing ring.

[0083] like Figure 7a and Figure 7b As shown, multiple flexible sealing rings are fixed within multiple grooves 2510 of the fiber optic connector 2000. Figure 7c As shown, as the fiber optic connector 2000 is inserted into and mates with the housing 3000, the flexible sealing ring contacts the first mounting hole 3100 of the housing 3000. The flexible sealing ring is confined within the space formed by the groove 2510 and the first mounting hole 3100.

[0084] By properly setting the size of this space (specifically, the difference between the inner diameter of the groove 2510 and the inner diameter of the first mounting hole, the groove width of the groove 2510, etc.), so that the size of this space is less than or equal to the volume of the flexible sealing ring, the flexible sealing ring can be positioned radially ( Figure 7c The groove 2510 and the first mounting hole 3100 are pressed together (in the vertical direction). This achieves compression between the groove 2510, the flexible sealing ring, and the first mounting hole 3100, thus achieving a seal.

[0085] In this embodiment, one or more grooves 2510 are provided on the fiber optic connector 2000 for fixing a flexible sealing ring. As long as a suitable size flexible sealing ring is selected (the inner diameter of the sealing ring is slightly smaller than the inner diameter of the groove 2510), the tension of the flexible sealing ring can be used to fix the flexible sealing ring in the groove 2510. Subsequent assembly processes do not require separate adjustment of the position of the flexible sealing ring, which simplifies the operation process and improves production efficiency.

[0086] It should be noted that, in addition to one or more grooves 2510 on the first outer surface 2200, the sealing ring limiting area 2500 of the fiber optic connector 2000 can also be in other forms. For example, the sealing ring limiting area 2500 can also be the above-mentioned first stepped surface 2300, and the first stepped surface 2300 is used to fix the flexible sealing ring.

[0087] As Figure 8 shown, the flexible sealing ring can be sleeved on the first stepped surface 2300. As the fiber optic connector 2000 is inserted into the housing 3000 and mates with the housing 3000, the flexible sealing ring contacts the second stepped surface 3200 of the housing 3000. The flexible sealing ring is restricted within the space formed by the first stepped surface 2300, the second mounting hole 3300, and the second stepped surface 3200. As long as the distance between the first stepped surface 2300 and the second stepped surface 3200 is reasonably set such that this distance is less than the thickness of the flexible sealing ring, the flexible sealing ring can squeeze the first stepped surface 2300 and the second stepped surface 3200 in the axial direction ( Figure 8 in this case, the left - right direction). Thus, the compression between the first stepped surface 2300, the flexible sealing ring, and the second stepped surface 3200 is achieved, and sealing is realized.

[0088] Specifically, as Figure 9 shown, assume that on the fiber optic connector 2000, the distance between the end of the first inclined surface close to the first stepped surface ( Figure 9 in this case, the right end) and the first stepped surface 2300 is d1; the distance between the limiting surface 3412 of the multiple latches 3410 on the housing 3000 and the second stepped surface 3200 is d2; the thickness of the flexible sealing ring is d3. Then it should be made that d1 < d2 + d3. Thus, the flexible sealing ring is squeezed by the first stepped surface 2300 and the second stepped surface 3200, and sealing is achieved.

[0089] In the embodiment of the present application, during the assembly process, as long as the flexible sealing ring is sleeved on the first outer surface 2200 of the fiber optic connector 2000, the position of the flexible sealing ring can be roughly fixed. As the fiber optic connector 2000 is inserted into the housing 3000 and mates with it, the flexible sealing ring is naturally squeezed between the first stepped surface 2300 and the second stepped surface 3200. The subsequent assembly process does not need to separately adjust the position of the flexible sealing ring, which can simplify the operation process and improve production efficiency.

[0090] In the embodiment of the present application, extension arms of multiple latches 3410 can also be provided on the second limiting structure 3400 of the housing 3000 for easy disassembly.

[0091] As Figure 10As shown, multiple clips 3410 are located between the first mounting hole 3100 and multiple extension arms 3500. After assembling the fiber optic connector 2000 and the housing 3000, if disassembly is required, a tool is inserted between the multiple extension arms 3500, causing the radial ( Figure 10 As the distance (vertical direction) increases, the radial distance between the multiple clips 3410 increases. When the radial distance between the multiple clips 3410 is greater than the radial dimension of the first inclined trapezoidal surface 2610, the clips 3410 can be disengaged from the first slot 2620, thereby enabling the fiber optic connector 2000 to be disassembled from the housing 3000.

[0092] In this embodiment, the extension arm 3500 increases the radial distance between the multiple latches 3410, making it greater than the radial dimension of the first inclined trapezoidal surface 2610, thus enabling the detachment of the fiber optic connector 2000 from the housing 3000. This facilitates maintenance and replacement, extending service life. Furthermore, it allows for disassembly and rework in case of assembly errors, improving product yield and production efficiency.

[0093] It is worth noting that, in addition to the first inclined trapezoidal surface 2610 and the first slot 2620, the first limiting structure 2600 of the fiber optic connector 2000 can also be in other forms. For example, the first limiting structure 2600 can also be a limiting hole 2630 on the first stepped surface 2300.

[0094] II. The first limiting structure 2600 is a limiting hole.

[0095] like Figure 11 As shown, the first limiting structure 2600 includes one or more limiting holes 2630 on the first stepped surface 2300. For example... Figure 12 As shown, on the second stepped surface of the outer shell 3000, there are limiting posts 3420 that match the number, size, and position of the limiting holes 2630.

[0096] During the assembly of the fiber optic connector 2000 and the housing 3000, the limiting hole 2630 is inserted into the limiting post 3420 on the housing 3000, and the surfaces of the limiting hole 2630 and the limiting post 3420 are welded together by laser welding and other processes to achieve the fixation between the fiber optic connector 2000 and the housing 3000.

[0097] In the embodiment of the present application, the limiting hole 2630 serves as the first limiting structure 2600 to fix the fiber connector 2000 and the shell 3000. For the sealing, one or more grooves 2510 can be formed on the first outer surface 2200 of the fiber connector 2000 (a flexible sealing ring is arranged in the groove 2510), a flexible sealing ring is arranged between the first stepped surface 2300 and the second stepped surface 3200, and the like, which are not limited in the present application.

[0098] It is worth noting that if the flexible sealing ring is arranged between the first stepped surface 2300 and the second stepped surface 3200 to ensure the sealing, a hole corresponding to the limiting column 3420 needs to be formed on the flexible sealing ring so that the limiting column 3420 can pass through smoothly.

[0099] Based on the above description of the fiber connector 2000, the embodiment of the present application further provides a pigtail. The pigtail includes the fiber connector 2000 described in any one of the above embodiments, and an optical fiber. The optical fiber is matched with the fiber hole 2100 of the fiber connector 2000. Figures 2 to 12

[0100] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented by other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and other division manners can be adopted in actual implementation, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0101] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. According to actual needs, part or all of the units can be selected to achieve the purpose of the embodiment scheme.​

Claims

1. An optical fiber connector, characterized by, The fiber connector comprises a fiber hole for fixing an optical fiber, and a first outer surface, a first stepped surface and a second outer surface connected in sequence; The first outer surface and the second outer surface are coaxial with the fiber hole, and the radial dimension of the second outer surface is greater than that of the first outer surface, and the first outer surface and the second outer surface are used to cooperate with the first mounting hole and the second mounting hole of the signal acquisition device; The fiber connector further comprises a sealing ring limiting area and a first limiting structure; The first limiting structure is at different positions of the first stepped surface in the axial direction of the fiber hole, and the first limiting structure is used to limit the axial position of the fiber connector relative to the signal acquisition device after cooperating with the second limiting structure of the signal acquisition device; The sealing ring limiting area is connected with the first outer surface, and the sealing ring limiting area is used to fix a flexible sealing ring.

2. The connector of claim 1, wherein The sealing ring limiting area comprises one or more grooves opened on the first outer surface, and the one or more grooves are used to fix a flexible sealing ring.

3. The connector according to claim 1 or 2, characterized by The sealing ring limiting area comprises the first stepped surface, and the first stepped surface is used to fix a flexible sealing ring.

4. The connector according to claim 1 or 2, characterized by The first limiting structure comprises a first inclined stepped surface and a first clamping groove connecting the first inclined stepped surface and the first outer surface; The radial dimension of the first inclined stepped surface increases as the distance between the first inclined stepped surface and the first stepped surface decreases; The radial dimension of the first clamping groove is smaller than the radial dimension of the end of the first inclined stepped surface close to the first stepped surface; The first clamping groove is used to accommodate a plurality of buckles on the signal acquisition device, and the first inclined stepped surface is used to slide the plurality of buckles into the first clamping groove.

5. The connector of claim 4, wherein, The distance d1 between the end of the first inclined stepped surface close to the first stepped surface and the first stepped surface, the distance d2 between the limiting surface of the plurality of buckles on the signal acquisition device and the second stepped surface, and the thickness d3 of the flexible sealing ring satisfy d1 6. The connector of claim 1 or 2, wherein The first limiting structure comprises one or more limiting holes on the first stepped surface.

7. An optical fiber, characterized by, The fiber connector comprises a fiber hole for fixing an optical fiber, and a first outer surface, a first stepped surface and a second outer surface connected in sequence; The first outer surface and the second outer surface are coaxial with the fiber hole, and the radial dimension of the second outer surface is greater than that of the first outer surface, and the first outer surface and the second outer surface are used to cooperate with the first mounting hole and the second mounting hole of the signal acquisition device; 8. A signal acquisition device, characterized by The fiber connector further comprises a sealing ring limiting area and a first limiting structure; The first limiting structure is at different positions of the first stepped surface in the axial direction of the fiber hole, and the first limiting structure is used to limit the axial position of the fiber connector relative to the signal acquisition device after cooperating with the second limiting structure of the signal acquisition device; The sealing ring limiting area is connected with the first outer surface, and the sealing ring limiting area is used to fix a flexible sealing ring.

9. The apparatus of claim 8, wherein, The sealing ring limiting area comprises one or more grooves opened on the first outer surface, and the one or more grooves are used to fix a flexible sealing ring. The sealing ring limiting area comprises the first stepped surface, and the first stepped surface is used to fix a flexible sealing ring. The first limiting structure comprises a first inclined stepped surface and a first clamping groove connecting the first inclined stepped surface and the first outer surface; The radial dimension of the first inclined stepped surface increases as the distance between the first inclined stepped surface and the first stepped surface decreases; The radial dimension of the first clamping groove is smaller than the radial dimension of the end of the first inclined stepped surface close to the first stepped surface; The first clamping groove is used to accommodate a plurality of buckles on the signal acquisition device, and the first inclined stepped surface is used to slide the plurality of buckles into the first clamping groove. The distance d1 between the end of the first inclined stepped surface close to the first stepped surface and the first stepped surface, the distance d2 between the limiting surface of the plurality of buckles on the signal acquisition device and the second stepped surface, and the thickness d3 of the flexible sealing ring satisfy d1 The first limiting structure comprises one or more limiting holes on the first stepped surface. The fiber connector comprises a fiber hole for fixing an optical fiber, and a first outer surface, a first stepped surface and a second outer surface connected in sequence; The first outer surface and the second outer surface are coaxial with the fiber hole, and the radial dimension of the second outer surface is greater than that of the first outer surface, and the first outer surface and the second outer surface are used to cooperate with the first mounting hole and the second mounting hole of the signal acquisition device; The fiber connector further comprises a sealing ring limiting area and a first limiting structure; The first limiting structure is at different positions of the first stepped surface in the axial direction of the fiber hole, and the first limiting structure is used to limit the axial position of the fiber connector relative to the signal acquisition device after cooperating with the second limiting structure of the signal acquisition device; The second limiting structure comprises a plurality of buckles connected with the first mounting hole, and the distance between the plurality of buckles and the second stepped surface is equal; The plurality of buckles comprises a second inclined stepped surface and a limiting surface, and the second inclined stepped surface is located between the limiting surface and the second stepped surface; A radial dimension of the second bevel increases as a distance from the second step surface increases. A radial dimension of the limiting surface is less than a radial dimension of the second bevel near an end of the second bevel close to the limiting surface.

10. The apparatus of claim 9, wherein ； The second limiting structure further includes extension arms of the plurality of buckles, the plurality of buckles being located between the first mounting hole and the extension arms.

11. The apparatus of claim 8, wherein, The second limiting structure includes one or more limiting posts on the second step surface.

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