LC assembling clamp

By designing an LC assembly fixture, a combination of locating pins and electric cylinders is used to achieve efficient and precise assembly of multiple LC connectors, solving the problems of low efficiency and poor precision in traditional processes and meeting the needs of large-scale production.

CN224158340UActive Publication Date: 2026-04-24WUHAN YIOU COMM TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WUHAN YIOU COMM TECH CO LTD
Filing Date
2025-05-12
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

Traditional LC connector assembly processes are inefficient, and the single-piece production model limits the improvement of production efficiency. Furthermore, it requires a high level of technical proficiency from operators, making it difficult to meet the needs of large-scale industrial production.

Method used

Design an LC assembly fixture, including a fixed base, an L-shaped connector, an electric cylinder, and positioning pins. The combination structure of positioning pins A and B enables the simultaneous positioning and precise docking of multiple ceramic ferrules. With the precise control of the electric cylinder, a stable connection between the optical fiber and the ceramic ferrule is ensured.

Benefits of technology

It enables the simultaneous assembly of multiple LC connectors, shortens the production cycle, improves assembly accuracy and product qualification rate, avoids component damage, and meets the needs of large-scale industrial production.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224158340U_ABST
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Abstract

The utility model discloses an LC assembling clamp and belongs to the field of LC machining. The LC assembling clamp comprises a fixing base, a step end is arranged on one side of the upper surface of the fixing base, side plates are fixedly installed on the two sides, close to the step end, of the fixing base through bolts, and a connecting groove is formed in the side, away from the step end, of the upper surface of the fixing base. An L-shaped connecting base is fixedly installed on the upper surface, close to the connecting groove, of the fixed base, through holes are formed in the two sides of the upper surface of the L-shaped connecting base, fastening nuts are connected into the through holes in the surface of the L-shaped connecting base, and a plurality of first positioning grooves which are evenly distributed in a transverse array mode are formed in a positioning pin A of the LC assembling clamp; a plurality of ceramic ferrules can be placed at a time, and a plurality of groups of optical fibers and the ceramic ferrules can be assembled at the same time in cooperation with the second positioning grooves of the positioning pins B, so that the production mode that only one LC type connector can be assembled at a time in the traditional process is changed, the production period is greatly shortened, and the requirement of large-scale industrial production is met.
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Description

Technical Field

[0001] This utility model relates to the field of LC machining technology, specifically an LC assembly fixture. Background Technology

[0002] In today's rapidly developing optical communication market, various optical communication products are constantly emerging. When building an optical fiber system, achieving low-loss connection of optical fiber or optical cable is the key to ensuring effective optical link connection. Optical link connection is divided into two types: permanent and dynamic. Dynamic connection is usually achieved with the help of dynamic connectors. As an important type of optical fiber connector, LC connector is widely used in integrated cabling system engineering.

[0003] LC connectors employ a modular jack (RJ) latching mechanism for easy operation. Their ceramic ferrule and sleeve are only half the size of ordinary SC and FC connectors, classifying them as small form factor (SFF) connectors. In the single-mode SFF field, LC connectors dominate and are also showing a rapid growth trend in multimode applications.

[0004] However, the traditional assembly process for LC connectors has drawbacks. In the traditional process, the thin and fragile optical fiber must first be precisely inserted into the ceramic ferrule pre-filled with glue. After the glue has completely cured and formed a stable connection, the remaining components are assembled in sequence. This process not only requires a high level of technical skill from the operators, but also only allows for the assembly of a single LC connector at a time. Faced with the ever-increasing market demand, this "single-piece" production mode limits the improvement of production efficiency.

[0005] Therefore, this utility model provides an LC assembly fixture to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] This invention provides an LC assembly fixture, which aims to solve the problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: It includes a fixed base, with a stepped end on one side of the upper surface of the fixed base. Side plates are fixedly installed on both sides of the fixed base near the stepped end by bolts. A connecting groove is opened on one side of the upper surface of the fixed base near the stepped end. An L-shaped connecting seat is fixedly installed on the upper surface of the fixed base near the connecting groove. Through holes are opened on both sides of the upper surface of the L-shaped connecting seat. A fastening nut is connected inside the through holes on the surface of the L-shaped connecting seat. A positioning hole is opened in the middle of one side surface of the L-shaped connecting seat. An electric cylinder is fixedly installed in the middle of one side surface of the positioning hole.

[0010] As a preferred technical solution of this application, there are two L-shaped connecting seats, which are symmetrically distributed on the surface of the fixed base. One side surface of the two L-shaped connecting seats is fixedly connected to the electric cylinder by bolts, and a positioning shaft is fixedly installed on one side extension end of the electric cylinder.

[0011] As a preferred technical solution of this application, a positioning pin A is fixedly installed at one end of the positioning shaft, and mounting holes are opened on both sides of one side surface of the positioning pin A. A first positioning groove is formed on the upper surface of the positioning pin A, and a rubber tail end is provided on one side surface of the first positioning groove.

[0012] As a preferred technical solution of this application, the number of the first positioning grooves is several, and they are evenly distributed on the surface of the positioning pin A in the form of a horizontal array. A connecting rod is slidably engaged in the mounting hole on one side of the positioning pin A.

[0013] As a preferred technical solution of this application, a positioning pin B is fixedly installed at the end of the connecting rod away from the positioning pin A, a second positioning groove is opened on the upper surface of the positioning pin B, and a soft pad is attached to the inner side wall of the positioning pin B.

[0014] As a preferred technical solution of this application, the second positioning groove and the first positioning groove are in the same plane, and the lower surface of the positioning pin B is fixedly installed on the stepped end.

[0015] Beneficial effects

[0016] 1. The LC assembly fixture has multiple first positioning slots evenly distributed in a horizontal array on the positioning pin A, which can place multiple ceramic ferrules at one time. With the second positioning slot of the positioning pin B, multiple sets of optical fibers and ceramic ferrules can be assembled at the same time. This changes the traditional production mode that can only assemble one LC connector at a time, greatly shortens the production cycle, and meets the needs of large-scale industrial production.

[0017] 2. A rubber tail end is provided on one side of the first positioning groove of positioning pin A, and a soft pad is attached to the inner wall of positioning pin B. During assembly, this can buffer and fix the ceramic ferrule and optical fiber, avoiding damage to components caused by hard squeezing or collision. At the same time, the electric cylinder precisely controls the movement of the positioning shaft and positioning pin A, ensuring accurate docking of the ceramic ferrule and optical fiber. After each component is accurately positioned, glue is injected and cured, ensuring uniform glue distribution. This effectively avoids the problem of inconsistent glue curing caused by traditional bottom heating methods, making the connection between the optical fiber and the connector more stable and improving the product qualification rate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an LC assembly fixture;

[0019] Figure 2 This is a schematic diagram of the overall disassembly structure of an LC assembly fixture;

[0020] Figure 3 This is a top view schematic diagram of an LC assembly fixture;

[0021] Figure 4 This is a schematic diagram of the overall back structure of an LC assembly fixture.

[0022] In the picture:

[0023] 1. Fixed base; 101. Stepped end; 102. Connecting groove; 2. L-shaped connecting seat; 201. Positioning hole; 3. Fastening nut; 4. Electric cylinder; 5. Positioning shaft; 6. Positioning pin A; 601. Mounting hole; 602. First positioning groove; 603. Rubber tail end; 7. Connecting rod; 8. Positioning pin B; 801. Second positioning groove; 802. Soft pad; 9. Side plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides an LC assembly fixture, such as Figures 1 to 4As shown, the device includes a fixed base 1. A stepped end 101 is provided on one side of the upper surface of the fixed base 1. Side plates 9 are fixedly installed on both sides of the fixed base 1 near the stepped end 101 by bolts. A connecting groove 102 is provided on one side of the upper surface of the fixed base 1 near the step end 101. An L-shaped connecting seat 2 is fixedly installed on the upper surface of the fixed base 1 near the connecting groove 102. Through holes are provided on both sides of the upper surface of the L-shaped connecting seat 2. Fastening nuts 3 are connected to the through holes on the surface of the L-shaped connecting seat 2. A positioning hole 201 is provided in the middle of one side surface of the L-shaped connecting seat 2. An electric cylinder 4 is fixedly installed in the middle of one side surface of the positioning hole 201. There are two L-shaped connecting seats 2. The two L-shaped connecting seats 2 are symmetrically distributed on the surface of the fixed base 1. One side surface of each L-shaped connecting seat 2 is fixedly connected to the electric cylinder 4 by bolts. A positioning shaft 5 is fixedly installed on one side extension end of the electric cylinder 4. A positioning pin A6 is fixedly installed on one end of the positioning shaft 5. Mounting holes 601 are opened on both sides of one side surface of the positioning pin A6. A first positioning groove 602 is formed on the upper surface of the positioning pin A6. A rubber tail end 603 is provided on one side surface of the first positioning groove 602. There are several first positioning grooves 602, which are evenly distributed on the surface of the positioning pin A6 in a horizontal array. A connecting rod 7 is slidably engaged in the mounting hole 601 on one side of the positioning pin A6.

[0026] First, install and prepare the fixture. Place the fixed base 1 stably on the workbench. Use bolts to pass through the corresponding holes of the side plate 9 and the fixed base 1 to securely install the side plate 9 on both sides of the fixed base 1 near the stepped end 101. The side plate 9 serves as protection and auxiliary positioning. Next, fix the L-shaped connecting seat 2 to the upper surface of the fixed base 1 near the connecting groove 102 with bolts. Since there are two L-shaped connecting seats 2 and they are symmetrically distributed, it is necessary to ensure that their positions are precisely symmetrical during installation to ensure the balance and stability of subsequent assembly. Pass the fastening nut 3 through the through hole on the upper surface of the L-shaped connecting seat 2 for subsequent connection and tightening of other components. At the same time, fix the electric cylinder 4 to the middle of the opposite side surface of the two L-shaped connecting seats 2 with bolts. The extension direction of the electric cylinder 4 must be consistent with the assembly direction of the LC type connector. Then, install the positioning shaft 5 on the extension end of the electric cylinder 4 to complete the installation of the electric drive assembly.

[0027] When assembling the LC type connector, the ceramic ferrule to be assembled is first placed in the first positioning groove 602 of the positioning pin A6. The first positioning groove 602 is evenly distributed in a horizontal array, which can place multiple ceramic ferrules at one time, improving assembly efficiency. Since a rubber tail end 603 is provided on one side of the first positioning groove 602, the elasticity of the rubber tail end 603 can tightly fit the ceramic ferrule, playing a buffering and fixing role, preventing the ceramic ferrule from being displaced or damaged during the assembly process.

[0028] A positioning pin B8 is fixedly installed at the end of the connecting rod 7 away from the positioning pin A6. A second positioning groove 801 is opened on the upper surface of the positioning pin B8. A soft pad 802 is attached to the inner side wall of the positioning pin B8. The second positioning groove 801 and the first positioning groove 602 are in the same plane. The lower surface of the positioning pin B8 is fixedly installed on the stepped end 101.

[0029] Then, the optical fiber is passed through the second positioning groove 801 of the positioning pin B8. The second positioning groove 801 is in the same plane as the first positioning groove 602, ensuring precise alignment of the optical fiber and the ceramic ferrule. The soft pad 802 on the inner wall of the positioning pin B8 gently secures the optical fiber, preventing damage from hard compression. By sliding one end of the connecting rod 7 into the mounting hole 601 of the positioning pin A6 and fixing the other end to the positioning pin B8, a stable connection structure is formed between the positioning pin A6 and the positioning pin B8, ensuring the relative position of the optical fiber and the ceramic ferrule is fixed.

[0030] After preparation, start the electric cylinder 4. The electric cylinder 4 pushes the positioning shaft 5 and the connected positioning pin A6 towards the positioning pin B8, so that the ceramic ferrule and the optical fiber gradually approach and accurately align. The precise control of the electric cylinder 4 can ensure the positional accuracy and pushing force during the alignment process, avoiding poor assembly due to excessive force or positional deviation. After the ceramic ferrule and the optical fiber are aligned, glue injection and curing operations can be performed according to assembly requirements. Since the components are precisely positioned at this time, the glue can be evenly distributed, achieving a good curing effect.

[0031] Throughout the assembly process, the connecting groove 102 of the fixed base 1 can be used to place small, loose parts used during the assembly process, making it convenient for operators to access them. The stepped end 101 not only provides a stable mounting base for the positioning pin B8, but also supports and reinforces the structure of the entire fixture, ensuring the stability of the fixture during long-term use.

[0032] After assembly, turn off the electric cylinder 4 and remove the assembled LC connector from the positioning slot. Then the assembly of the next set of LC connectors can be carried out. In this way, this LC assembly fixture can achieve efficient and accurate batch assembly of LC connectors, effectively solving the problems of low production efficiency and poor assembly accuracy in traditional assembly processes.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An LC assembly fixture, comprising a fixed base (1), characterized in that: The upper surface of the fixed base (1) is provided with a stepped end (101) on one side. The fixed base (1) is fixed with side plates (9) on both sides near the stepped end (101) by bolts. The upper surface of the fixed base (1) is provided with a connecting groove (102) on one side near the stepped end (101). The upper surface of the fixed base (1) is fixed with an L-shaped connecting seat (2) near the connecting groove (102). The upper surface of the L-shaped connecting seat (2) is provided with through holes on both sides. A fastening nut (3) is connected in the through hole of the surface of the L-shaped connecting seat (2). A positioning hole (201) is provided in the middle of one side surface of the L-shaped connecting seat (2). An electric cylinder (4) is fixedly installed in the middle of one side surface of the positioning hole (201).

2. The LC assembly fixture according to claim 1, characterized in that: There are two L-shaped connecting seats (2), which are symmetrically distributed on the surface of the fixed base (1). One side surface of the two L-shaped connecting seats (2) is fixedly connected to the electric cylinder (4) by bolts. A positioning shaft (5) is fixedly installed on one side extension end of the electric cylinder (4).

3. The LC assembly fixture according to claim 2, characterized in that: One end of the positioning shaft (5) is fixedly installed with a positioning pin A (6). The positioning pin A (6) has mounting holes (601) on both sides of one side surface. The upper surface of the positioning pin A (6) has a first positioning groove (602). One side surface of the first positioning groove (602) has a rubber tail end (603).

4. An LC assembly fixture according to claim 3, characterized in that: The number of the first positioning grooves (602) is several, and they are evenly distributed on the surface of the positioning pin A (6) in the form of a horizontal array. A connecting rod (7) is slidably engaged in the mounting hole (601) on one side of the positioning pin A (6).

5. An LC assembly fixture according to claim 4, characterized in that: The connecting rod (7) is fixedly installed with a positioning pin B (8) at the end away from the positioning pin A (6). The upper surface of the positioning pin B (8) is provided with a second positioning groove (801), and the inner side wall of the positioning pin B (8) is fitted with a soft pad (802).

6. An LC assembly fixture according to claim 5, characterized in that: The second positioning groove (801) and the first positioning groove (602) are in the same plane, and the lower surface of the positioning pin B (8) is fixedly installed on the stepped end (101).