Optical cable fixing structure, connector and connectorizer
By using a movable clamping arm in the fiber optic connector to engage with the tail shell, the fixing strength of the optical cable is enhanced, the problem of instability of the clamping arm structure under tension and environmental changes is solved, and a stable connection of the optical cable is achieved.
Patent Information
- Application Number
- CN202522016720.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-19
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-19
AI Technical Summary
The clamping arm structure of existing fiber optic connectors is prone to reduced fixing pressure when subjected to optical cable tension and environmental changes, resulting in unstable optical cable fixing.
The clamping arm is movable along the axis. Through the cooperation between the tail shell and the clamping arm, the clamping arm is retracted inward by the squeezing action of the tail shell, which enhances the fixing effect of the optical cable and transfers the tension between the tail shell and the front shell, avoiding the impact on the optical fiber fixing part.
It improves the fixing strength of the optical cable, ensures the stability of the optical cable and the performance of the connector under tension, and reduces the impact on the optical fiber fixing part.
Smart Images
Figure CN224682434U_ABST
Abstract
Description
Technical Field
[0001] This utility model mainly relates to the field of optical fiber connectors, and in particular to an optical cable fixing structure, connector and splicer. Background Technology
[0002] Existing fiber optic connectors, especially those with a clamping arm structure at the tail to secure the fiber optic cable, require the clamping arm to engage with the tail cap. The cable is secured by the clamping arm being compressed by the inner wall of the tail cap. The clamping arm is typically fixed to the connector body, and the tail cap is also fixed to the connector body. This structure relies solely on the pressure generated when the tail cap and connector are fixed to secure the fiber optic cable. This structure is particularly susceptible to the tensile force of the fiber optic cable and changes in the natural environment, such as thermal expansion and contraction, which can reduce the securing pressure on the fiber optic cable. Utility Model Content
[0003] To solve the above-mentioned technical problems, this utility model provides an optical cable fixing structure, a connector, and a splicer. This utility model is achieved through the following technical solutions: An optical cable fixing structure, comprising: The front housing is used to fix the optical fiber of the optical cable, and the end of the front housing is provided with a tail housing locking part; A clamping arm is axially movable at the end of the front housing, and the clamping arm of the clamping arm is used to clamp the optical cable and allow the optical fiber of the optical cable to enter the front housing. The tail shell is fixed to the front shell by the tail shell locking part. The tail shell squeezes the clamping arm of the clamping arm to fix the optical cable. When the optical cable is subjected to tension, the clamping arm tends to move in the direction of tension, forcing the clamping arm of the clamping arm to retract inward, thereby further fixing the optical cable.
[0004] Preferably, the tail shell locking part and the tail shell are configured to be locked together by threads or snaps.
[0005] Preferably, at least a portion of the clamping arm is fitted into the outer shell body end of the front housing.
[0006] Preferably, the front housing includes an optical fiber fixing part, and at least a portion of the clamping arm is fitted into the optical fiber fixing part.
[0007] Preferably, the portion of the clamping arm that fits into the outer shell of the front housing and the corresponding outer shell of the front housing are provided with guide grooves and guide blocks along the axial direction.
[0008] Preferably, the portion of the clamping arm that fits into the optical fiber fixing part and the corresponding optical fiber fixing part are provided with guide grooves and guide rails along the axial direction.
[0009] Preferably, the portion of the clamping arm that fits into the outer shell of the front housing and the corresponding outer shell of the front housing are provided with a locking block and a locking slot, the locking block and the locking slot being configured to allow the clamping arm to have a set axial movement distance relative to the front housing.
[0010] Preferably, the portion of the clamping arm that fits into the optical fiber fixing part and the corresponding optical fiber fixing part are provided with a locking block and a locking slot, the locking block and the locking slot being configured to allow the clamping arm to have a set axial movement distance relative to the front housing.
[0011] A connector comprising the aforementioned optical cable fixing structure.
[0012] A connector comprising a connector having the aforementioned optical cable fixing structure.
[0013] Preferably, the front housing contains an optical fiber fixing assembly; the optical fiber fixing assembly includes a housing, a cover, and a clamping spring; the housing and the cover are snap-fit together, and the housing and the cover have V-grooves that allow optical fiber mating; the clamping spring is used to clamp the housing and the cover together to fix the position of the optical fiber; the joint between the housing and the cover allows an insert to be inserted to open the housing and the cover, thereby allowing the optical fiber to pass through for mating.
[0014] Preferably, the clamping spring has three clamping sections, corresponding to the positions of the coated optical fibers on both sides and the joint of the two optical fibers in the middle; the insert has three sections, corresponding to the three clamping sections of the clamping spring, and the width of the insert is greater than the width of the clamping section of the clamping spring.
[0015] The beneficial effects of this utility model are as follows: The clamping arm provided by this utility model can move back and forth along the axial direction. When the optical cable is subjected to an outward pulling force, the optical cable will drive the clamping arm to move outward, thereby causing the clamping arm to contract inward and press the optical cable, increasing the fixing strength. At the same time, the pulling force itself is transmitted to the tail shell through the clamping arm, and will not generate pulling force on the optical fixing components in the front shell, ensuring the stability of the use effect. Attached Figure Description
[0016] Figure 1 An exploded structural diagram of the optical cable fixing structure; Figure 2 A cross-sectional structural diagram of the optical cable fixing structure in its assembled state; Figure 3 This is an exploded structural diagram of the optical fiber fixing part; Figure 4An exploded structural diagram showing the tail section and front section of the shell secured by clips and bayonets. Detailed Implementation
[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0018] For ease of explanation, this patent uses an optical fiber connector as an example. However, those skilled in the art should know that this structure can also be applied to optical fiber connectors.
[0019] like Figure 1 , Figure 2 and Figure 3 As shown, an optical cable fixing structure includes a front housing 1 for fixing the optical fiber of the optical cable. The end of the front housing 1 is provided with a tail housing locking part, which is configured with an external thread 2. An optical fiber fixing part 3 is provided inside the front housing 1. The main body of the front housing 1 is tubular, and its surface has an insertion port 5 for engaging with a key 4. The optical fiber fixing part 3 is also tubular and can be inserted into the interior of the main body of the front housing 1.
[0020] The clamping arm 6 is axially movable at the end of the front housing 1. The clamping arm 6 mainly includes a cylindrical end 7 that mates with the front housing 1 and a clamping arm 8. The cylindrical end 7 can be inserted into the end of the front housing 1 and is allowed to move axially. Specifically, for the cylindrical end 7, a guide groove 9 can be provided on it, located on the inner wall of the outer shell body end of the front housing 1, or as... Figure 1 As shown, a guide rail 10 is provided on the outer wall of the end of the fiber fixing part 3 to ensure that the clamping arm 6 moves axially and prevents it from rotating. Meanwhile, at the end of the outer shell body of the front housing 1, or as shown... Figure 1 As shown, a locking block 11 is provided at the end of the fiber fixing part 3, and a locking slot 12 is provided on the columnar end 7. The locking slot 12 has a margin in the axial direction to ensure that the clamping arm 6 has the ability to move axially. This margin can be small because the axial movement of the clamping arm 6 is small enough to complete further compression and fixation. By providing the locking block 11 and the locking slot 12, the clamping arm 6 can be mounted on the main body of the front housing 1 or the end of the fiber fixing part 3, and the clamping arm 6 will not fall off the front housing 1.
[0021] The clamping arm 8 has at least two pieces, and the outer side of the clamping arm 8 is arc-shaped to cooperate with the tail shell 13. The clamping arm 6 has a through hole in the middle, so that the optical cable 14 can be clamped by the clamping arm 8, and the optical fiber 15 of the optical cable enters into the optical fiber fixing part 3. At the same time, the optical fiber 15 of the optical cable has a certain degree of curvature before entering the optical fiber fixing part 3 to ensure stable use.
[0022] The tail shell 13 engages with the external thread 2 via internal threads, gradually advancing during tightening. This causes the outer side of the clamping arm 8 to gradually contract inward, thus securing the optical cable. When the optical cable 14 is under tension, the clamping arm 8 tends to move outward in the direction of the tension, forcing the clamping arm 8 of the clamping arm 6 to contract inward, further securing the optical cable. Simultaneously, since the clamping arm 6 is movable, the tension is transmitted from the clamping arm 6 to the tail shell 13, converting it into tension between the tail shell 13 and the front shell 1. The tail shell 13 and the front shell 1 are connected by threads, resulting in a robust connection and structural strength. Therefore, this structure can withstand significant tension without affecting the optical fiber or the internal optical fiber fixing part 3. Furthermore, the clamping arm 6 is movable, so even if the clamping arm 6 moves, it will not affect the optical fiber fixing part 3. Figure 4 As shown, the fiber fixing part 3 has an end face 20 for engaging with the outer shell of the front housing 1, ensuring that the fiber fixing part 3 will not rotate within the outer shell of the front housing 1. Simultaneously, a latch 21 can be provided on the tail shell 13, and a latching block 22 can be provided at the end of the outer shell of the front housing 1, thereby securing it by a snap-fit mechanism.
[0023] For the fiber optic splice, the fiber optic fixing assembly 3 includes a housing 16, a cover 17, and a clamping spring 18. The housing 16 and the cover 17 can be fastened together, and V-grooves 19 are provided inside the housing 16 and the cover 17 to allow fiber optic splicing. The clamping spring 18 is used to clamp the housing 16 and the cover 17 together to fix the position of the fiber optic cable. An insert is allowed to be inserted at the joint between the housing 16 and the cover 17 to open the housing 16 and the cover 17, thereby allowing the fiber optic cable to pass through for splicing. The clamping spring 18 has three clamping sections, corresponding to the positions of the coated fibers on both sides and the splicing point of the two fibers in the middle. The key 4 has three sections, corresponding to the three clamping sections of the clamping spring 18, and the width of the key 4 is greater than the width of the clamping section of the clamping spring 18 to ensure smooth opening.
Claims
1. An optical cable fixing structure, characterized in that: include: The front housing is used to fix the optical fiber of the optical cable, and the end of the front housing is provided with a tail housing locking part; A clamping arm is axially movable at the end of the front housing, and the clamping arm of the clamping arm is used to clamp the optical cable and allow the optical fiber of the optical cable to enter the front housing. The tail shell is fixed to the front shell by the tail shell locking part. The tail shell squeezes the clamping arm of the clamping arm to fix the optical cable. When the optical cable is subjected to tension, the clamping arm tends to move in the direction of tension, forcing the clamping arm of the clamping arm to retract inward, thereby further fixing the optical cable.
2. The optical cable fixing structure according to claim 1, characterized in that: The tail shell locking part and the tail shell are configured to be locked together by threads or snaps.
3. The optical cable fixing structure according to claim 1, characterized in that: At least a portion of the clamping arm is fitted into the end of the outer shell of the front housing.
4. The optical cable fixing structure according to claim 1, characterized in that: The front housing includes an optical fiber fixing part, and at least a portion of the clamping arm is fitted into the optical fiber fixing part.
5. The optical cable fixing structure according to claim 3, characterized in that: The portion of the clamping arm that fits into the outer shell of the front housing and the corresponding outer shell of the front housing are provided with guide grooves and guide blocks along the axial direction.
6. The optical cable fixing structure according to claim 4, characterized in that: The portion of the clamping arm that fits into the optical fiber fixing part and the corresponding portion of the optical fiber fixing part are provided with guide grooves and guide rails along the axial direction.
7. The optical cable fixing structure according to claim 3, characterized in that: The portion of the clamping arm that fits into the outer shell of the front housing and the corresponding outer shell of the front housing are provided with a locking block and a locking slot. The locking block and the locking slot are configured to allow the clamping arm to have a set axial movement distance relative to the front housing.
8. The optical cable fixing structure according to claim 4, characterized in that: The portion of the clamping arm that fits into the optical fiber fixing part and the corresponding optical fiber fixing part are provided with a locking block and a locking slot. The locking block and the locking slot are configured to allow the clamping arm to have a set axial movement distance relative to the front housing.
9. A connector, characterized in that: It has a connector with the optical cable fixing structure as described in any one of claims 1 to 8.
10. A connector, characterized in that: It has a connector with the optical cable fixing structure as described in any one of claims 1 to 8.
11. The connector according to claim 10, characterized in that: The front housing contains an optical fiber fixing assembly; the optical fiber fixing assembly includes a housing, a cover, and a clamping spring; the housing and the cover can be fastened together, and the housing and the cover have V-shaped grooves that allow optical fiber mating; the clamping spring is used to clamp the housing and the cover together to fix the position of the optical fiber; the joint between the housing and the cover allows an insert to be inserted to open the housing and the cover, thereby allowing the optical fiber to pass through for mating.
12. The connector according to claim 11, characterized in that: The clamping spring has three clamping sections, corresponding to the positions of the coated optical fibers on both sides and the joint of the two optical fibers in the middle; the insert has three sections, corresponding to the three clamping sections of the clamping spring, and the width of the insert is greater than the width of the clamping section of the clamping spring.