Optical fiber adapter

Abstract

The utility model relates to technical field of optical fiber communication discloses a kind of optical fiber adapters, and optical fiber adapter is used to seal the end of optical fiber, and optical fiber adapter includes shell, adapter, sealing assembly and optical fiber joint.The shell interior defines out accommodating cavity, and the shell has installation site, and installation site is located in accommodating cavity;Adapter is connected to shell, and adapter has abutment site, and abutment site is located in accommodating cavity, and clearance is along first direction between abutment site and installation site, and at least part adapter is located in the outside of accommodating cavity;Sealing assembly includes first sealing member and second sealing member, and first sealing member is located in clearance, and is connected to abutment site and installation site, and second sealing member is located in the outside of accommodating cavity, and second sealing member is connected to the end of shell and adapter;Optical fiber joint is located in accommodating cavity, and optical fiber joint is connected to adapter, and optical fiber joint is used to connect optical fiber.The optical fiber adapter of the utility model can improve the sealing effect to optical fiber end.

Description

Technical Field

[0001] This utility model relates to the technical field of optical fiber communication, and in particular to an optical fiber adapter. Background Technology

[0002] When connecting optical cables to optical cable splice boxes, terminal equipment, and other devices, the optical fibers need to be exposed, and the ends of the optical fibers need to be sealed.

[0003] In related technologies, heat shrink tubing or adhesive injection is commonly used to seal fiber optic adapters. However, heat shrink tubing is prone to gaps due to temperature changes, or delamination due to excessive bending at the seal, thus affecting the sealing effect of the fiber optic adapter. Furthermore, the adhesive layer formed by adhesive injection can crack after aging, and this process also prevents the optical fiber from moving within the cable, impacting subsequent fiber optic maintenance. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an optical fiber adapter that can improve the sealing effect on the end of the optical fiber.

[0005] According to an embodiment of the present invention, the fiber optic adapter is used to seal the end of an optical fiber. The fiber optic adapter includes a housing, an adapter, a sealing assembly, and an optical fiber connector.

[0006] The housing defines an accommodating cavity, and the housing has a mounting position disposed within the accommodating cavity. An adapter is connected to the housing, and the adapter has an abutment position disposed within the accommodating cavity. A gap exists between the abutment position and the mounting position along a first direction, and at least a portion of the adapter is disposed outside the accommodating cavity. A sealing assembly includes a first seal and a second seal. The first seal is disposed within the gap and connected to the abutment position and the mounting position. The second seal is disposed outside the accommodating cavity and connected to an end of the housing and the adapter. An optical fiber connector is disposed within the accommodating cavity and connected to the adapter. The optical fiber connector is used to connect the optical fiber.

[0007] The fiber optic adapter according to the embodiments of this utility model has at least the following beneficial effects: By defining a receiving cavity inside the housing, a fiber optic connector can be disposed within the receiving cavity to connect the end of the fiber optic cable, thereby enabling the transmission of optical signals from the fiber optic cable. Furthermore, the second sealing member connected to the end of the housing and the adapter located outside the receiving cavity can prevent communication between the receiving cavity and the external environment, thus sealing the receiving cavity. Simultaneously, the first sealing member, disposed between the mounting position and the abutment position, further improves the sealing effect on the fiber optic end by sealing the connection between the mounting position and the abutment position.

[0008] According to some embodiments of the present invention, the accommodating cavity includes a first mounting cavity and a second mounting cavity, the first sealing member is disposed at the communication between the first mounting cavity and the second mounting cavity to separate the first mounting cavity and the second mounting cavity, the second sealing member is disposed at one end of the second mounting cavity away from the first mounting cavity, and the optical fiber connector is disposed in the first mounting cavity.

[0009] According to some embodiments of the present invention, the adapter includes a connecting part and an abutting part. The abutting part is disposed on the peripheral wall of the connecting part. The first sealing member is disposed at the connection between the connecting part and the abutting part. The connecting part abuts against the inner wall of the first mounting cavity. The abutting part abuts against the inner wall of the second mounting cavity. At least a portion of the abutting part is disposed on the outer side of the second mounting cavity. The second sealing member is connected to the abutting part.

[0010] According to some embodiments of the present invention, the fiber optic adapter further includes a cover, which is detachably connected to the housing and abuts against the side of the abutting portion opposite to the housing and the second sealing member.

[0011] According to some embodiments of the present invention, the cover and the connecting portion are spaced apart along a second direction, the cover extends toward the connecting portion to form a blocking portion, the blocking portion abuts against the abutting portion, the blocking portion blocks one end of the abutting portion away from the housing along a first direction, and the second direction intersects with the first direction.

[0012] According to some embodiments of the present invention, the housing further includes at least two anti-rotation portions, which are connected to the inner wall of the housing and extend toward the receiving cavity. The at least two anti-rotation portions are spaced apart to jointly define an anti-rotation position, and at least a portion of the adapter is disposed at the anti-rotation position.

[0013] According to some embodiments of the present invention, the optical fiber adapter further includes a gel block, an inner pressure ring, and an outer pressure ring disposed in the accommodating cavity. The gel block has a through hole and is adapted to cover the end of the optical fiber. The inner pressure ring covers the gel block, and the outer pressure ring is sleeved on the outer wall of the inner pressure ring.

[0014] According to some embodiments of the present invention, the fiber optic adapter further includes a fixing bracket, which is connected to the housing and disposed in the accommodating cavity. The fixing bracket includes a first fixing part and a second fixing part, which together define the fixing cavity. The inner crimping ring and the outer crimping ring are disposed in the fixing cavity. The first fixing part abuts against the end of the inner crimping ring, and the second fixing part abuts against the side wall of the outer crimping ring.

[0015] According to some embodiments of the present invention, the end of the housing opposite to the adapter is further provided with a fixing position, and the fixing bracket further has a third fixing part, which is connected to the fixing position.

[0016] According to some embodiments of the present invention, the housing has an opening at one end away from the adapter, the opening communicates with the receiving cavity, the optical fiber is connected to the optical fiber connector through the opening, and the sealing assembly further includes a third sealing element disposed at the opening.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the fiber optic adapter in an embodiment of the present invention; Figure 2 This is a schematic diagram of the fiber optic adapter in an embodiment of the present invention; Figure 3 This is an exploded view of the fiber optic adapter in an embodiment of this utility model; Figure 4 This is an exploded view of the shell and adapter in an embodiment of this utility model; Figure 5 This is a cross-sectional view of the fiber optic adapter in an embodiment of this utility model; Figure 6 As an embodiment of this utility model Figure 5 Enlarged view of point A; Figure 7 This is a schematic diagram showing the connection between the inner pressure ring and the outer pressure ring and the fixed bracket in an embodiment of this utility model; Figure 8 This is a schematic diagram of the fiber optic adapter in an embodiment of the present invention.

[0019] Figure label: Fiber optic adapter 100; Housing 110; receiving cavity 111; first mounting cavity 1111; second mounting cavity 1112; mounting position 112; anti-rotation part 113; anti-rotation position 1131; fixing position 114; opening 115; 120; Connecting part 121; Abutting part 122; Abutting position 123; Gap 1231; Anti-rotation surface 124; Sealing assembly 130; first seal 131; second seal 132; third seal 133; Fiber optic connector 140; cover 150; shielding part 151; Gel block 160; through hole 161; inner pressure ring 162; outer pressure ring 163; Fixed bracket 170; first fixing part 171; second fixing part 172; fixing cavity 1721; third fixing part 173; Fiber optic cable 180. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] The fiber optic adapter of this utility model is described below with reference to the accompanying drawings. In this embodiment, the first direction can be understood as the up-down direction, and the second direction can be understood as the front-back direction or the left-right direction.

[0026] This utility model embodiment provides an optical fiber adapter 100 for sealing the end of an optical fiber, see reference. Figures 1 to 5 As shown, the fiber optic adapter 100 includes a housing 110, an adapter 120, a sealing assembly 130, and a fiber optic connector 140.

[0027] The housing 110 internally defines a receiving cavity 111 for accommodating the assembly adapter 120, the sealing assembly 130, and the fiber optic connector 140. The housing 110 also has a mounting position 112 located within the receiving cavity 111 for mounting a portion of the sealing assembly 130. The adapter 120 is connected to the housing 110, with a portion of the adapter 120 positioned within the receiving cavity 111 for connection to the housing 110, and another portion positioned outside the receiving cavity 111 for connection to a portion of the sealing assembly 130. The adapter 120 has an abutment position 123 located within the receiving cavity 111. When the adapter 120 and housing 110 are assembled, a gap 1231 is formed between the abutment position 123 and the mounting position 112 along a first direction. The sealing assembly 130 includes a first seal 131 and a second seal 132. The first seal 131 is disposed in the gap 1231 formed by the abutment position 123 and the mounting position 112 to seal the accommodating cavity 111. The second seal 132 is disposed on the outside of the accommodating cavity 111 and is connected to the end of the housing 110 and to the adapter 120 located on the outside of the accommodating cavity 111. The fiber optic connector 140 is disposed in the accommodating cavity 111 and is connected to the adapter 120. The fiber optic connector 140 is used to connect the end of the optical fiber 180 to conduct optical signals, thereby electrically connecting the optical fiber 180 and the terminal device.

[0028] Specifically, the housing 110 has two opposing ends. One end of the housing 110 is used to install the adapter 120, the sealing assembly 130, and the fiber optic connector 140, while the other end is used to pass through the fiber optic cable 180 to seal and protect the end of the fiber optic cable 180 inside the accommodating cavity 111. When the adapter 120 and the sealing assembly 130 are assembled inside the housing 110, the first sealing member 131 is disposed in the gap 1231 formed by the abutment position 123 and the mounting position 112. At this time, the abutment position 123 of the adapter 120 and the mounting position 112 of the housing 110 clamp the first sealing member 131, so that the first sealing member 131 is fixed inside the housing 110 and provides a sealing effect to the accommodating cavity 111. When the adapter 120 is connected to the housing 110, the adapter 120 fills the receiving cavity 111 of the housing 110. There is an assembly gap between the adapter 120 and the housing 110. The second seal 132 connects the end of the housing 110 and the adapter 120 located outside the receiving cavity 111, thereby sealing the assembly gap between the adapter 120 and the housing 110, thus preventing the receiving cavity 111 from communicating with the external environment. When external impurities fall onto the housing 110, the second seal 132 will initially block the impurities, thereby preventing the impurities from entering the receiving cavity 111. The first sealing element 131 is disposed in the accommodating cavity 111. The first sealing element 131 is disposed upstream of the fiber optic connector 140 along the path of the impurity movement. That is, when the impurity enters the accommodating cavity 111, the impurity will first pass through the first sealing element 131. At this time, the first sealing element 131 will further block the impurity, thereby preventing the impurity from moving to the fiber optic connector 140 to avoid the impurity affecting the connection between the fiber optic connector 140 and the fiber optic cable 180.

[0029] Optical fibers are typically protected by external optical cables. However, when connecting the optical fiber to a terminal device, the fiber needs to extend into an optical cable for electrical connection to the terminal device, thus enabling optical signal transmission. Therefore, the ends of the optical fiber require sealing protection. Compared to related technologies that use heat-shrink tubing or adhesive injection to seal the ends of the optical fiber, the optical fiber adapter 100 of this embodiment defines a receiving cavity 111 inside the housing 110, allowing the optical fiber connector 140 to be positioned within the receiving cavity 111 to connect the end of the optical fiber 180, thereby enabling optical signal transmission. Furthermore, the second sealing member 132, connected to the end of the housing 110 and the adapter 120 located outside the receiving cavity 111, can prevent communication between the receiving cavity 111 and the external environment, thus sealing the receiving cavity 111. Simultaneously, the first sealing member 131, positioned between the mounting position 112 and the abutment position 123, seals the connection between the mounting position 112 and the abutment position 123, further improving the sealing effect on the end of the optical fiber 180.

[0030] In some embodiments, see Figure 5 and Figure 6 As shown, the accommodating cavity 111 includes a first mounting cavity 1111 and a second mounting cavity 1112. When the housing 110 is not assembled with the adapter 120, the first mounting cavity 1111 and the second mounting cavity 1112 of the housing 110 are interconnected. The first mounting cavity 1111 can accommodate the fiber optic connector 140, while the second mounting cavity 1112 is open to the external environment. When the sealing assembly 130 and the adapter 120 are assembled within the accommodating cavity 111, the first seal 131 and part of the adapter 120 are positioned at the connection between the first mounting cavity 1111 and the second mounting cavity 1112. At this time, the first seal 131 and the adapter 120 act as separators to separate the first mounting cavity 1111 and the second mounting cavity 1112, thus preventing further communication between them. Furthermore, a portion of the adapter 120 extends to the outside of the second mounting cavity 1112. The second seal 132 is connected to the adapter 120 located on the outside of the second mounting cavity 1112 and the end of the second mounting cavity 1112 facing away from the first mounting cavity 1111. That is, the second seal 132 and the adapter 120 seal the communication position between the second mounting cavity 1112 and the external environment, thereby making the accommodating cavity 111 in a sealed state relative to the external environment. This protects the fiber optic connector 140 and the fiber optic cable 180 inside the accommodating cavity 111 and improves the sealing effect of the fiber optic adapter 100.

[0031] In this embodiment, the accommodating cavity 111 is divided into a first mounting cavity 1111 and a second mounting cavity 1112. The first mounting cavity 1111 and the second mounting cavity 1112 are sealed by a sealing assembly 130 and an adapter 120, thus sealing the first mounting cavity 1111 and the second mounting cavity 1112 relative to the external environment. When external impurities (such as moisture or dust) attempt to enter the accommodating cavity 111, the second sealing member 132 seals the second mounting cavity 1112, thereby blocking the impurities and preventing them from entering. In some embodiments, even if impurities enter the second mounting cavity 1112 through the external environment, when the impurities move to the connection between the first mounting cavity 1111 and the second mounting cavity 1112, the first sealing member 131 will also block the impurities, further preventing their entry and avoiding any impact on the connection between the fiber optic connector 140 and the fiber optic cable 180, thereby improving the sealing effect of the fiber optic adapter 100.

[0032] Furthermore, see Figure 5 and Figure 6As shown, the first mounting cavity 1111 and the second mounting cavity 1112 are not the same size; the circumferential dimension of the second mounting cavity 1112 is larger than that of the first mounting cavity 1111, meaning that the accommodating cavity 111 has an overall stepped structure. When impurities enter the second mounting cavity 1112, some of them will be blocked by the inner wall of the second mounting cavity 1112, thus remaining on the inner wall structure of both the second mounting cavity 1112 and the first mounting cavity 1111. Simultaneously, the size of the first mounting cavity 1111 is smaller than that of the second mounting cavity 1112, thereby reducing the spatial path for impurities to move, and further improving the sealing effect of the fiber optic adapter 100.

[0033] Further, see Figures 3 to 6 As shown, the adapter 120 also includes a connecting portion 121 and an abutting portion 122, with the abutting portion 122 circumferentially disposed on the outer wall of the connecting portion 121. When the adapter 120 is assembled into the housing 110, the connecting portion 121 abuts against the inner wall of the first mounting cavity 1111, and the abutting portion 122 abuts against the inner wall of the second mounting cavity 1112, thereby reducing the assembly gap between the adapter 120 and the housing 110 and reducing the possibility of impurities entering the receiving cavity 111 to improve the sealing effect of the fiber optic adapter 100.

[0034] Specifically, the abutment position 123 is disposed along the first direction on the side of the abutment portion 122 facing the housing 110, and the first sealing member 131 is disposed at the connection between the connecting portion 121 and the abutment portion 122, that is, the first sealing member 131 is connected to the connecting portion 121 and the abutment portion 122. After the adapter 120 and the housing 110 are connected and assembled, the first sealing member 131 will be clamped by the abutment position 123 of the adapter 120 and the mounting position 112 of the housing 110. Since the connecting portion 121 abuts against the inner wall of the first mounting cavity 1111, the abutment portion 122 abuts against the inner wall of the second mounting cavity 1112, and the first sealing member 131 is disposed at the connection between the connecting portion 121 and the abutment portion 122, the first sealing member 131 can provide a sealing effect at the connection between the first mounting cavity 1111 and the second mounting cavity 1112, thereby further improving the sealing performance of the fiber optic adapter 100. In this embodiment, at least a portion of the abutment portion 122 extends into the second mounting cavity 1112 along the first direction, meaning the height of the abutment portion 122 along the first direction is greater than the wall height of the second mounting cavity 1112. The second sealing member 132 is disposed at the end of the wall of the second mounting cavity 1112 and connected to the outer wall of the abutment portion 122, thereby sealing the connection between the second mounting cavity 1112 and the external environment.

[0035] Further reading Figures 2 to 6As shown, the fiber optic adapter 100 also includes a cover 150, which is detachably connected to the end of the housing 110. When the cover 150 is connected to the housing 110, the cover 150 abuts against the side of the abutment portion 122 away from the housing 110 in the first direction and against the second seal 132, so as to apply a downward force to the abutment portion 122 and the second seal 132, thereby improving the sealing effect of the second seal 132 on the second mounting cavity 1112 and improving the connection stability between the housing 110 and the abutment portion 122.

[0036] In specific implementation, the cover 150 further seals the accommodating cavity 111. After the adapter 120 and the housing 110 are connected, there will be a circumferential gap between the abutment portion 122 and the housing 110. The second sealing member 132 will be spatially located in the gap between the abutment portion 122 and the housing 110, that is, the second sealing member 132 will be located between the abutment portion 122 and the housing 110 along the second direction, thereby sealing the second mounting cavity 1112. When the cover 150 is connected to the housing 110, the cover 150 will abut against the second sealing member 132 to apply pressure to the second sealing member 132, thereby improving the sealing effect of the second sealing member 132 on the second mounting cavity 1112. Furthermore, the cover 150 will cover the second sealing member 132, thereby further sealing the gap between the abutment portion 122 and the housing 110, thereby further improving the sealing effect of the fiber optic adapter 100.

[0037] In one embodiment, see [reference] Figure 5 and Figure 6 As shown, the cover 150 and the connecting portion 121 are spaced apart along the second direction. The side of the cover 150 facing the connecting portion 121 extends along the second direction to form a shielding portion 151. The shielding portion 151 is connected to the abutting portion 122 and blocks part of the gap between the abutting portion 122 and the housing 110 along the first direction, thereby improving the sealing performance of the fiber optic adapter 100.

[0038] Specifically, a portion of the connecting portion 121 extends out of the receiving cavity 111. When the cover 150 is connected to the housing 110, the blocking portion 151 of the cover 150 is spaced apart from the connecting portion 121, and a receiving groove is formed between the blocking portion 151 and the connecting portion 121. When external impurities attempt to enter the second mounting cavity 1112 through the cover 150, the impurities are initially blocked by the cover 150 because the cover 150 abuts against the end of the abutment portion 122 away from the housing 110, and the blocked impurities are collected in the receiving groove. In some embodiments, if some impurities move through the cover 150 into the connection gap between the abutment portion 122 and the housing 110, the second seal 132 will further block the impurities, thereby reducing the number of impurities entering the receiving cavity 111. Furthermore, the first seal 131 will block impurities for the third time at the connection between the first mounting cavity 1111 and the second mounting cavity 1112, thereby preventing impurities from entering the first mounting cavity 1111 and affecting the connection between the optical fiber 180 and the optical fiber connector 140, thereby improving the sealing effect of the optical fiber adapter 100.

[0039] In some embodiments, see Figure 4 As shown, the housing 110 also includes at least two anti-rotation portions 113, which are connected to the inner wall of the housing 110. The inner wall of the housing 110 defines a receiving cavity 111, and the anti-rotation portions 113 extend toward the center of the receiving cavity 111, i.e., the anti-rotation portions 113 are protruding relative to the inner wall of the housing 110. The at least two anti-rotation portions 113 are spaced apart to jointly define an anti-rotation position 1131 in the middle. When the adapter 120 is connected to the housing 110, at least a portion of the adapter 120 will be disposed on the anti-rotation position 1131, thereby achieving a fixed connection between the adapter 120 and the housing 110. Specifically, in one example, the number of anti-rotation portions 113 is four, and the four anti-rotation portions 113 are divided into two groups. Two anti-rotation portions 113 in each group are spaced apart, and the distance between the two anti-rotation portions 113 forms the anti-rotation position 1131. See also... Figure 4 As shown, the adapter 120 is provided with an anti-rotation surface 124. When the adapter 120 is housed in the receiving cavity 111 to connect with the housing 110, the anti-rotation surface 124 of the adapter 120 is housed in the anti-rotation position 1131. At this time, the two anti-rotation parts 113 limit the outer wall of the adapter 120, thereby fixing the adapter 120 in the housing 110 and preventing it from rotating relative to the housing 110, thereby improving the connection stability between the housing 110 and the adapter 120.

[0040] In some embodiments, see Figures 5 to 7As shown, the fiber optic adapter 100 also includes a gel block 160, an inner crimping ring 162, and an outer crimping ring 163. The gel block 160, inner crimping ring 162, and outer crimping ring 163 are all housed within a receiving cavity 111. The gel block 160 has a through hole 161 for inserting an optical fiber 180, allowing the gel block 160 to cover and fix the end of the optical fiber 180. The inner crimping ring 162 covers the gel block 160, and the outer crimping ring 163 is fitted onto the outer wall of the inner crimping ring 162. In a specific implementation, one end of the housing 110 is used to connect the adapter 120, and the other end is used to house the gel block 160, inner crimping ring 162, and outer crimping ring 163. Optical fiber 180 passes through the housing 110 at the end opposite to the adapter 120 and enters the receiving cavity 111. When optical fiber 180 enters the receiving cavity 111, the end of optical fiber 180 passes through the through hole 161 of gel block 160. At this time, gel block 160 covers the end of optical fiber 180, thereby sealing the end of optical fiber 180. Inner pressure ring 162 covers the outside of gel block 160 to improve the connection stability between gel block 160 and optical fiber 180. Outer pressure ring 163 is sleeved on the outer wall of inner pressure ring 162, thereby ensuring that inner pressure ring 162 applies pressure to gel block 160, so that gel block 160 seals the end of optical fiber 180, thereby further improving the sealing performance of optical fiber 180 end.

[0041] Furthermore, in another embodiment, see [reference] Figures 5 to 7 As shown, the fiber optic adapter 100 also includes a fixing bracket 170. The fixing bracket 170 is connected to the housing 110 and disposed in the receiving cavity 111. The fixing bracket 170 is used to fix the gel block 160, the inner crimping ring 162, and the outer crimping ring 163 inside the housing 110. The fixing bracket 170 includes a first fixing part 171 and a second fixing part 172. The first fixing part 171 and the second fixing part 172 are circumferentially arranged around the same axis, and the circumferential arrangement of the first fixing part 171 and the second fixing part 172 together defines the fixing cavity 1721. The gel block 160, the inner crimping ring 162, and the outer crimping ring 163 are disposed in the fixing cavity 1721, thereby fixing the gel block 160, the inner crimping ring 162, and the outer crimping ring 163. Among them, the first fixing part 171 abuts against the end of the inner crimping ring 162, and the second fixing part 172 abuts against the outer wall of the outer crimping ring 163.

[0042] Specifically, along the first direction, the length of the inner crimping ring 162 is greater than the length of the outer crimping ring 163, meaning that the outer crimping ring 163 only covers part of the outer wall of the inner crimping ring 162. The length of the second fixing part 172 along the first direction is also less than the length of the first fixing part 171. As a result, when the inner crimping ring 162 and the outer crimping ring 163 are placed in the fixing cavity 1721 of the fixing bracket 170, the first fixing part 171 will be engaged with the end of the inner crimping ring 162, and the second fixing part 172 will abut against the side wall of the inner crimping ring 162, thereby fixing the inner crimping ring 162 and the outer crimping ring 163 respectively, thereby improving the sealing of the end of the optical fiber 180 by the gel block 160, the inner crimping ring 162 and the outer crimping ring 163.

[0043] In some embodiments, see Figure 8 As shown, a fixing position 114 is provided at one end of the housing 110 away from the adapter 120, and a third fixing part 173 is provided on the fixing bracket 170. When the fixing bracket 170 is assembled in the receiving cavity 111 of the housing 110, the third fixing part 173 will be connected to the fixing position 114, thereby connecting the fixing bracket 170 to the housing 110.

[0044] In a specific implementation, one end of the housing 110 is connected to the adapter 120, and the other end is connected to the fixing bracket 170. A third fixing part 173 is disposed on the outer wall of the fixing bracket 170, and extends towards the inner wall of the housing 110. The third fixing part 173 has a snap-fit ​​structure. When the fixing bracket 170 is connected to the housing 110, the third fixing part 173 hooks onto the lower part of the fixing position 114 of the housing 110. The fixing position 114 can limit the fixing bracket 170, thereby preventing the fixing bracket 170 from moving upward in the first direction. Furthermore, in this embodiment, a blocking part extends from the inner wall of the housing 110 towards the center of the accommodating cavity 111, and the blocking part abuts against the lower part of the fixing bracket 170 along the first direction. There are multiple blocking parts, spaced apart around the inner wall of the housing 110, with a fixing position 114 between adjacent blocking parts. By limiting the third fixing part 173 with the fixing position 114 and abutting the bottom of the fixing bracket 170 with the blocking part, the fixing bracket 170 can be fixed, thus preventing the fixing bracket 170 from moving relative to the housing 110 in the accommodating cavity 111, thereby causing the optical fiber 180 to move and affecting the connection stability of the optical fiber 180 and the optical fiber connector 140.

[0045] In another embodiment, see Figure 3 and Figure 5As shown, the housing 110 has an opening 115 at the end opposite to the adapter 120. The opening 115 connects to the receiving cavity 111, which is connected to the outside through the opening 115. This allows the optical fiber 180 to enter the receiving cavity 111 through the opening 115 and connect with the optical fiber connector 140. The sealing assembly 130 also includes a third sealing element 133, which is disposed at the opening 115 to seal the end of the housing 110.

[0046] Specifically, in one example, both ends of the housing 110 have openings 115, through which the adapter 120 and the optical fiber 180 are respectively assembled into the receiving cavity 111. One opening 115 of the housing 110 is sealed by the adapter 120, while the other opening 115 is sealed by a third seal 133. In this embodiment, the third seal 133 is a waterproof gel. The third seal 133 has a connection hole. The size of the connection hole is adapted to the size of the optical cable, and the connection hole is used to pass the optical cable through so that it can enter the receiving cavity 111. When the third seal 133 is assembled to the end of the housing 110, it fills the opening 115 of the housing 110, thereby preventing contaminants (such as dust and moisture) from the external environment from entering the receiving cavity 111, thus improving the sealing performance of the optical fiber adapter 100. Furthermore, the connection hole of the third seal 133 will limit the circumferential movement of the optical cable, thereby preventing the optical fiber 180 from shifting within the accommodating cavity 111 after it is connected to the optical fiber connector 140.

[0047] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. An optical fiber adapter for sealing the end of an optical fiber, characterized in that, The fiber optic adapter includes: A housing having an internally defined receiving cavity, the housing having a mounting position disposed within the receiving cavity; An adapter is connected to the housing, the adapter having an abutment position disposed in the receiving cavity, a gap being formed between the abutment position and the mounting position along a first direction, and at least a portion of the adapter being disposed on the outside of the receiving cavity; A sealing assembly includes a first seal and a second seal. The first seal is disposed in the gap and connected to the abutment position and the mounting position. The second seal is disposed on the outside of the receiving cavity and connected to the end of the housing and the adapter. An optical fiber connector is disposed in the accommodating cavity, the optical fiber connector is connected to the adapter, and the optical fiber connector is used to connect the optical fiber.

2. The fiber optic adapter according to claim 1, characterized in that, The accommodating cavity includes a first mounting cavity and a second mounting cavity. The first sealing member is disposed at the communication between the first mounting cavity and the second mounting cavity to separate the first mounting cavity and the second mounting cavity. The second sealing member is disposed at the end of the second mounting cavity opposite to the first mounting cavity. The optical fiber connector is disposed in the first mounting cavity.

3. The fiber optic adapter according to claim 2, characterized in that, The adapter includes a connecting part and an abutting part. The abutting part is disposed on the peripheral wall of the connecting part. The first sealing member is disposed at the connection between the connecting part and the abutting part. The connecting part abuts against the inner wall of the first mounting cavity. The abutting part abuts against the inner wall of the second mounting cavity. At least a portion of the abutting part is disposed on the outer side of the second mounting cavity. The second sealing member is connected to the abutting part.

4. The fiber optic adapter according to claim 3, characterized in that, The fiber optic adapter also includes a cover that is detachably connected to the housing and abuts against the side of the abutment portion opposite to the housing and the second seal.

5. The fiber optic adapter according to claim 4, characterized in that, The cover and the connecting portion are spaced apart along the second direction. The cover extends toward the connecting portion to form a blocking portion. The blocking portion abuts against the abutting portion. The blocking portion blocks one end of the abutting portion away from the housing along the first direction. The second direction intersects with the first direction.

6. The fiber optic adapter according to claim 1, characterized in that, The housing further includes at least two anti-rotation portions connected to the inner wall of the housing and extending toward the receiving cavity. The at least two anti-rotation portions are spaced apart to jointly define an anti-rotation position, and at least a portion of the adapter is disposed at the anti-rotation position.

7. The fiber optic adapter according to claim 1, characterized in that, The fiber optic adapter further includes a gel block, an inner pressure ring, and an outer pressure ring disposed in the accommodating cavity. The gel block has a through hole and is adapted to cover the end of the optical fiber. The inner pressure ring covers the gel block, and the outer pressure ring is sleeved on the outer wall of the inner pressure ring.

8. The fiber optic adapter according to claim 7, characterized in that, The fiber optic adapter further includes a fixing bracket connected to the housing and disposed in the receiving cavity. The fixing bracket includes a first fixing part and a second fixing part, which together define the fixing cavity. The inner crimping ring and the outer crimping ring are disposed in the fixing cavity. The first fixing part abuts against the end of the inner crimping ring, and the second fixing part abuts against the side wall of the outer crimping ring.

9. The fiber optic adapter according to claim 8, characterized in that, The housing is provided with a fixing position at the end opposite to the adapter, and the fixing bracket is also provided with a third fixing part, which is connected to the fixing position.

10. The fiber optic adapter according to claim 1, characterized in that, The housing has an opening at the end opposite to the adapter, the opening is connected to the receiving cavity, the optical fiber is connected to the optical fiber connector through the opening, and the sealing assembly further includes a third sealing element disposed at the opening.

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