Welding clamping assembly for optical device

Abstract

The utility model discloses a welding clamping assembly for an optical device, and relates to the technical field of optical device production. The device specifically comprises an optical device clamp and a pressure head, the optical device clamp is used for clamping an optical device so that a fixed insertion hole formed in the optical device faces upwards, the pressure head is provided with a positioning hole, the positioning hole is used for positioning the insertion end of the end of an optical fiber, and when the insertion end is inserted into the fixed insertion hole, the optical fiber is inserted into the fixed insertion hole. The pressing head presses the insertion end into the fixed insertion hole through gravity, and the insertion end is prevented from moving. According to the utility model, the clamp is adopted to clamp the optical device, the fixed jack of the optical device faces upwards, and then the pressing head is adopted to press the insertion end, so that the insertion end cannot move in the welding process, and the transmission quality of optical signals is ensured.

Description

Technical Field

[0001] This utility model relates to the field of optical device manufacturing technology, and specifically provides a welding and clamping assembly for optical devices. Background Technology

[0002] Optical devices are used to transmit or process optical signals, and the transmission of optical signals places high demands on the precision of these devices. Taking fiber optic connectors as an example, they are used to transmit light from an optical fiber into the connector itself, and then, through optical elements within the connector, transmit the optical signal to another connector or other devices. Figure 4 As shown, optical devices such as fiber optic connectors require the optical elements to be housed within a housing structure. One end of the optical fiber has an insertion end, similar to an optical adapter, and the housing structure has a fixed socket that matches the insertion end. The insertion end also houses the optical elements. When the insertion end is inserted into the fixed socket to a certain position (usually the insertion end to the extreme position of the fixed socket), communication is established between the insertion end and the optical elements within the optical device. This ensures that the optical signal in the optical fiber can be stably and completely transmitted to the optical device. After the insertion end is inserted into the optical device, the ferrule structure is typically soldered to the optical device connector. During soldering, a clamping assembly is used to secure the optical device, then the ferrule is inserted into the fixed socket, and finally, the ferrule is soldered to the optical device as a single unit.

[0003] However, due to the small size and light weight of the insertion end, and the fact that the welding torch comes into contact with it during welding, the insertion end may move during the welding process due to external factors such as contact with the welding torch. Once the insertion end shifts, it will cause a misalignment between the insertion end and the optical device inside the optical device, resulting in unstable or no optical signal transmission, which urgently needs to be solved. Utility Model Content

[0004] This invention provides a welding clamping assembly for optical devices, which solves the problem that when a fixed terminal is clamped, it obstructs the welding torch, requiring the clamp to be released during welding, which causes the fixed terminal to shift position during subsequent welding.

[0005] The technical solution of this utility model is as follows:

[0006] A welding clamping assembly for optical devices includes an optical device clamp and a pressure head. The optical device clamp is used to hold the optical device with the fixed insertion hole on the optical device facing upward. The pressure head has a positioning hole for positioning the insertion end of the optical fiber. When the insertion end is inserted into the fixed insertion hole, the pressure head presses the insertion end into the fixed insertion hole by gravity to prevent the insertion end from moving.

[0007] In this design, after the optical device fixture fixes the optical device, the fixing socket on the optical device remains open and facing upwards. Then, the gravity of the pressure head presses the insertion end firmly into the fixing socket, ensuring that the insertion end is always subjected to a downward force and preventing it from moving. During welding, even if the welding torch contacts the insertion end, the insertion end will remain stationary under the gravity of the pressure head, allowing the insertion end and the optical components inside the optical device to transmit signals stably and completely.

[0008] To address the issue of optical fiber obstructing the insertion positioning hole, a groove is provided on the side of the pressure head to allow the optical fiber to pass through. The groove penetrates the side wall of the positioning hole and extends through the pressure head along the axial direction of the positioning hole.

[0009] In this solution, when the insertion end is inserted into the positioning hole, the optical fiber can pass through the groove and be led out from the rear top surface of the pressure head along the groove, thus solving the problem of the optical fiber blocking the insertion end into the positioning hole.

[0010] Preferably, the pressure head is provided with a machining hole that penetrates the top of the pressure head, the machining hole is coaxial with the positioning hole, the machining hole is connected to the positioning hole, and the groove is connected to the machining hole.

[0011] In this design, after the machining hole is set, the optical fiber can enter the machining hole from the groove. The optical fiber can lean against the side wall of the machining hole, preventing it from moving downward along the groove under the action of gravity, thus keeping the position of the optical fiber stable.

[0012] Because the pressure head needs to rely on gravity to prevent the insertion end from moving, the pressure head itself needs to be relatively heavy. Therefore, the greater the weight of the pressure head, the larger its volume. To prevent the pressure head from being too large and obstructing the welding torch, the pressure head includes a positioning boss and a counterweight. The positioning hole is located at the bottom of the positioning boss, and the counterweight is located at the top of the positioning boss.

[0013] In this design, the counterweight is located at the top of the positioning boss, and the positioning hole is located at the bottom of the positioning boss. The size of the positioning boss can be controlled to be small, so that the positioning boss will not obstruct the welding of the welding gun. The counterweight is located at the top of the positioning boss, and the distance between the counterweight and the optical device is far. The welding gun is used to weld the connection between the insertion end and the optical device. Therefore, when the counterweight is far from the optical device, it will not obstruct the welding gun.

[0014] To address the issue of the insertion end tilting due to the offset of the counterweight's center of gravity relative to the insertion end's axis, the positioning boss is a cylindrical or prismatic structure, the counterweight is a cylindrical or prismatic structure, the positioning boss is coaxial with the counterweight, and the positioning hole is coaxial with the positioning boss.

[0015] In this design, because the positioning boss and counterweight are cylindrical or prismatic structures, the center of gravity of both the positioning boss and the counterweight lies on their respective axes. Furthermore, the positioning boss and counterweight are coaxial, therefore the center of gravity of the pressure head lies on the axis of the positioning boss. Since the positioning boss is coaxial with the positioning hole (used to fix the insertion end), and the positioning hole is coaxial with the insertion end, the center of gravity of the pressure head is also coaxial with the insertion end, preventing the insertion end from tilting due to the pressure head's center of gravity shifting off the axis of the insertion end.

[0016] Preferably, the counterweight and the positioning boss are integrally formed.

[0017] In this design, the pressure head is a single, integrally molded unit, which reduces processing costs.

[0018] Preferably, the counterweight is detachably connected to the positioning boss.

[0019] In this design, the counterweight and the positioning boss are detachably connected. Therefore, multiple different types of positioning bosses can be configured, with positioning holes on each boss corresponding to different types of insertion ends. When soldering optical components, a suitable positioning boss can be selected based on the shape of the insertion end, and then the positioning boss and counterweight can be combined. When there are many types of optical components to be soldered, this modular structure allows for the use of a universal counterweight, thus reducing costs.

[0020] Before welding, the insert end can be inserted into the positioning hole, and then the pressure head can be moved so that the bottom end of the insert end is inserted into the fixed insertion hole. To prevent the insert end from coming off the positioning hole during the movement of the pressure head, the pressure head is provided with a locking hole. One end of the locking hole is connected to the side wall of the positioning hole, and the other end of the locking hole passes through the side wall of the pressure head. A locking structure is provided in the locking hole, which is used to press the fixed terminal in the positioning hole from the side.

[0021] In this design, a locking structure can be used to press the insertion end from the side, fixing it within the positioning hole. This allows the insertion end and the pressure head to move as a single unit, preventing the insertion end from detaching from the positioning hole. Simultaneously, the locking structure pressing the insertion end from the side also prevents the pressure head from sliding downwards while pressing the insertion end, ensuring that the pressure head can stably apply pressure to the insertion end.

[0022] Preferably, the locking hole is a threaded hole, and the locking structure is provided with an external thread that is adapted to the threaded hole.

[0023] In this design, the locking structure is threadedly connected to the locking hole, ensuring a stable connection between the locking structure and the locking hole, thus improving the stability of the locking structure's fixing effect on the insertion end.

[0024] Preferably, the locking structure is a locking bolt, or the locking structure is an elastic positioning bead, wherein the elastic positioning bead is provided with external threads and is connected to a threaded hole through the external threads.

[0025] In this solution, if a locking bolt is used to lock the insertion end, it has the advantages of low cost and ease of operation. When the insertion end has a recessed structure such as an annular groove, an elastic positioning bead can be used as the locking structure. The advantage of the elastic positioning bead is that the locking structure does not need to be adjusted each time. When the insertion end is inserted, the elastic positioning bead is compressed. When the recessed structure on the insertion end moves to the position of the elastic positioning bead, the elastic positioning bead will automatically pop out and abut against the recessed structure, thus fixing the insertion end.

[0026] The beneficial effects of this utility model are:

[0027] This invention uses a clamp to hold the optical device with the fixing hole of the optical device facing upward, and then uses a pressure head to press the insertion end to prevent the insertion end from moving during the welding process, thereby ensuring the transmission quality of the optical signal. Attached Figure Description

[0028] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of this utility model;

[0030] Figure 2 This is a top view of the pressure head;

[0031] Figure 3 This is a schematic diagram of the pressure head structure;

[0032] Figure 4 This is a schematic diagram of the structure after the optical fiber insertion end is inserted into the optical device housing.

[0033] In the above figures, the corresponding reference numerals are as follows:

[0034] 1. Pressure head; 2. Optical device fixture; 3. Optical device; 4. Insertion end; 5. Machining hole; 6. Groove; 7. Positioning hole; 8. Locking structure; 9. Positioning boss. Detailed Implementation

[0035] The technical solution of this utility model will be clearly and completely described in conjunction with the accompanying drawings and through specific embodiments.

[0036] Example 1:

[0037] like Figure 1 As shown, this embodiment provides a welding clamping assembly for optical devices, including an optical device clamp 2 and a pressure head 1. The optical device clamp 2 is used to hold the optical device 3 and keep the fixing socket of the optical device 3 facing upwards. The pressure head 1 presses the insertion end 4 with gravity, so that the insertion end 4 can be stably inserted into the fixing socket and prevents the insertion end 4 from moving relative to the fixing socket during welding. A positioning hole 7 is provided at the bottom of the pressure head 1. The insertion end 4 is inserted into the positioning hole 7, so that the pressure head 1 and the insertion end 4 are connected, and the gravity of the pressure head 1 can act on the insertion end 4. The shape of the positioning hole 7 is adapted to the shape of the insertion end 4. For example, when the insertion end 4 is a cylindrical optical adapter, the positioning hole 7 is a circular hole.

[0038] like Figure 2 and Figure 3 As shown, a groove 6 is provided on the side of the pressure head 1. The groove 6 penetrates the top and bottom surfaces of the pressure head 1 and communicates with the positioning hole 7. When the insertion end 4 is inserted into the positioning hole 7, the optical fiber connected to the insertion end 4 can be located within the groove 6, solving the problem of the optical fiber obstructing the insertion of the insertion end 4 into the positioning hole 7. The width of the groove 6 is adapted to the optical fiber, just enough for the optical fiber to pass through. If the width of the groove 6 is too large, it will affect the positioning effect of the positioning hole 7 on the insertion end 4. The groove 6 penetrates the bottom of the pressure head 1 so that the optical fiber can enter the groove 6 from the bottom of the pressure head 1, and the groove 6 penetrates the top of the pressure head 1 so that the optical fiber can move to the top of the groove 6. When the optical fiber is located at the top of the groove 6, the optical fiber can rest against the side of the groove 6 and remain stationary. At this time, the optical fiber will not obstruct the welding.

[0039] A machining hole 5 can be provided on the pressure head 1. The machining hole 5 is coaxial with the positioning hole 7. When machining the positioning hole 7, the axis of the machining hole 5 can be used as a reference for machining, which facilitates the machining of the positioning hole 7. The groove 6 penetrates through the side wall of the machining hole 5 and is connected to the machining hole 5. Because the groove 6 is connected to the machining hole 5, the optical fiber can enter the machining hole 5 from the groove 6. After the optical fiber enters the machining hole 5, it can lean against the side wall of the machining hole 5, preventing the optical fiber from sliding downward along the groove 6 under the action of gravity, thereby preventing the optical fiber from obstructing the welding.

[0040] The machining hole 5 is connected to the positioning hole 7, allowing the optical fiber to pass directly. The diameter of the machining hole 5 can be smaller or larger than that of the positioning hole 7.

[0041] When the diameter of the machining hole 5 is larger than that of the positioning hole 7, in order to prevent the insertion end 4 from sliding relative to the positioning hole 7 and causing the weight of the pressure head 1 to be unstablely applied to the insertion end 4, a locking hole is provided on the pressure head 1. The locking hole penetrates the side wall of the positioning hole 7 from the side, and a locking structure 8 is provided in the locking hole. The insertion end 4 is pressed from the side by the locking structure 8 so that the insertion end 4 will not slide relative to the positioning hole 7.

[0042] The locking hole is a threaded hole, and the locking structure 8 is provided with an external thread that matches the threaded hole. For example, the locking structure 8 uses a locking bolt, which is connected to the threaded hole. After the insertion end 4 is inserted into the positioning hole 7, the locking bolt is tightened, and the insertion end 4 is pressed from the side by the locking bolt, so that the insertion end 4 is fixed relative to the pressure head 1.

[0043] Before welding, the optical device 3 is clamped using the optical device fixture 2, with the fixing socket of the optical device 3 facing upwards. Then, the insertion end 4 is inserted into the positioning hole 7, and the locking structure 8 presses the insertion end 4 firmly, fixing it relative to the pressure head 1. This allows the insertion end 4 to move with the pressure head 1 without dislodging during its movement. After the insertion end 4 is fixed in the positioning hole 7, the pressure head 1 is moved, and the insertion end 4 is inserted into the fixing socket. Welding can begin after the insertion end 4 is inserted into the fixing socket. During welding, even if the welding torch comes into contact with the insertion end 4, the weight of the pressure head 1 presses the insertion end 4 downwards, preventing displacement of the insertion end 4. This ensures that the insertion end 4 corresponds to the position of the optical element within the optical device 3, enabling stable transmission of optical signals.

[0044] The optical device clamp 2 is a device already existing in the prior art. For example, to keep the optical device 3 with its fixed socket facing upwards, a positioning groove can be provided on the optical device clamp 2, with the top of the positioning groove penetrating through the optical device clamp 2. Then, a tightening screw hole is opened on one side of the positioning groove, and a tightening bolt is used to press the housing of the optical device 3 from the side, thereby fixing the optical device 3. The positioning groove is set in a vertical direction, and a limit block is provided at the lower end of the bottom of the positioning groove, with the limit block protruding from the bottom of the groove. When the optical device 3 is clamped, the bottom end of the housing of the optical device 3 can abut against the limit block from top to bottom, which can play a role in positioning the optical device 3 in the height direction and preventing the optical device from sliding downwards along the positioning groove.

[0045] Example 2:

[0046] This second embodiment provides a welding clamping assembly for optical devices. Unlike the first embodiment, the locking structure 8 in this second embodiment is different.

[0047] The locking structure 8 is an elastic positioning bead, which has external threads and connects to the locking hole through these threads. In the prior art, the elastic positioning bead is also called a ball-head plunger or a spring plunger, and it is a common component in the market, so it will not be described in detail here.

[0048] The elastic positioning bead presses the insertion end 4 from the side using elastic force. To ensure the pressing effect of the elastic positioning bead on the insertion end 4, it is usually used to press the insertion end 4 with a recessed structure on the side. When the insertion end 4 is inserted into the positioning hole 7, the elastic positioning bead contracts under the pressure of the insertion end 4. As the insertion end 4 moves, the recessed structure on the side of the insertion end 4 moves to the position of the elastic positioning bead. The elastic positioning bead will then press against the recessed structure with elastic force. At this time, the resistance to pushing the insertion end 4 will increase significantly. As the resistance to the movement of the insertion end 4 increases, the connection between the insertion end 4 and the pressure head 1 becomes more stable. After the insertion end 4 is inserted into the fixed insertion hole, it can be ensured that the pressure head 1 will not move downward relative to the insertion end 4 under the action of gravity.

[0049] The recessed structure can be a circular hole, circular groove, square groove, annular groove, or other structures on the surface of the insertion end 4.

[0050] Example 3:

[0051] This embodiment three provides a welding clamping assembly for optical devices. Unlike embodiment one, the pressure head 1 in this embodiment three includes a positioning boss 9 and a counterweight.

[0052] like Figure 3 As shown, because the pressure head 1 needs to have a certain weight to press the insertion end 4 tightly by gravity, the material of the pressure head 1 needs to be a material with high density and also needs to have a certain volume. The material of the pressure head 1 can be made of alloys such as carbon steel, SG steel, and high-speed steel, or it can be made of non-metallic materials such as diamond.

[0053] The larger the volume of the pressure head 1, the larger the area of ​​the end face where the positioning hole 7 is located, which refers to the bottom surface of the pressure head 1. The size of the insertion end 4 is smaller than the size of the optical device 3, so the welding torch performs welding at a certain downward angle. If the bottom surface area of ​​the pressure head 1 is too large, it will obstruct the welding process. Therefore, the pressure head 1 is configured as a combination of a positioning boss 9 and a counterweight. The positioning hole 7 is located on the bottom surface of the positioning boss 9, and the counterweight is located on the top surface of the positioning boss 9. The main weight of the pressure head 1 is distributed on the counterweight. The positioning boss 9 is used to increase the height of the counterweight, preventing it from obstructing the welding process. This configuration keeps the bottom surface area of ​​the pressure head 1 within a range that does not affect welding, and increases the height of the counterweight, thus preventing the pressure head 1 from obstructing the welding process.

[0054] The pressure head 1 and the positioning boss 9 can be integrally formed or a combined structure.

[0055] The advantage of one-piece molding is that it is easy to process, and it can be directly machined on a lathe.

[0056] The modular structure is more complex, but the counterweight and positioning boss 9 can form various combinations. For example, when fixing different insertion ends 4, the dimensions of the positioning holes 7 are different, so different positioning bosses 9 can be used for fixing. In this case, the counterweight can be combined with different positioning bosses 9. Multiple positioning bosses 9 can be configured with only one counterweight, making the counterweight universal. When there is a need to fix various insertion ends 4, this setting can reduce costs. The connection between the positioning boss 9 and the counterweight can be through a threaded connection. For example, an external thread can be provided on the positioning boss 9, and an internal thread can be provided on the counterweight, so that the positioning boss 9 can be connected to the counterweight through the thread. Alternatively, a through hole can be provided on the positioning boss 9, and a screw hole can be provided on the counterweight, so that a screw can be used to fix the positioning boss 9 to the counterweight through the through hole.

[0057] The pressure head 1 and the positioning boss 9 adopt a cylindrical or prismatic structure, in which the center of gravity coincides with the axis. A cylindrical structure is preferred because it has the advantage of low processing cost.

[0058] The positioning boss 9 is coaxial with the positioning hole 7, which makes the center of gravity of the pressure head 1 coincide with the axis of the positioning hole 7, preventing the center of gravity of the pressure head 1 from shifting and causing the insertion end 4 to tilt.

Claims

1. A welding clamping assembly for optical devices, characterized in that, The device includes an optical device clamp (2) and a pressure head (1). The optical device clamp (2) is used to clamp the optical device (3) so that the fixed socket on the optical device (3) faces upward. The pressure head (1) has a positioning hole (7) for positioning the insertion end (4) of the optical fiber end. When the insertion end (4) is inserted into the fixed socket, the pressure head (1) presses the insertion end (4) into the fixed socket by gravity to prevent the insertion end (4) from moving.

2. The welding clamping assembly for optical devices according to claim 1, characterized in that, The pressure head (1) has a groove (6) on its side for the optical fiber to pass through. The groove (6) penetrates the side wall of the positioning hole (7) and passes through the pressure head (1) along the axial direction of the positioning hole (7).

3. The welding clamping assembly for optical devices according to claim 2, characterized in that, The pressure head (1) is provided with a machining hole (5), which penetrates the top of the pressure head (1). The machining hole (5) is coaxial with the positioning hole (7) and is connected to the positioning hole (7). The groove (6) is connected to the machining hole (5).

4. The welding clamping assembly for optical devices according to claim 1, characterized in that, The pressure head (1) includes a positioning boss (9) and a counterweight. The positioning hole (7) is opened at the bottom of the positioning boss (9), and the counterweight is set at the top of the positioning boss (9).

5. A welding clamping assembly for optical devices according to claim 4, characterized in that, The positioning boss (9) is a cylindrical or prismatic structure, the counterweight is a cylindrical or prismatic structure, the positioning boss (9) is coaxial with the counterweight, and the positioning hole (7) is coaxial with the positioning boss (9).

6. A welding clamping assembly for optical devices according to claim 4, characterized in that, The counterweight and the positioning boss (9) are integrally formed.

7. A welding clamping assembly for optical devices according to claim 4, characterized in that, The counterweight is detachably connected to the positioning boss (9).

8. A welding clamping assembly for optical devices according to claim 1, characterized in that, The pressure head (1) is provided with a locking hole. One end of the locking hole is connected to the side wall of the positioning hole (7), and the other end of the locking hole penetrates the side wall of the pressure head (1). A locking structure (8) is provided in the locking hole. The locking structure (8) is used to press the fixed terminal in the positioning hole (7) from the side.

9. A welding clamping assembly for optical devices according to claim 8, characterized in that, The locking hole is a threaded hole, and the locking structure (8) is provided with an external thread that is compatible with the threaded hole.

10. A welding clamping assembly for optical devices according to claim 9, characterized in that, The locking structure (8) is a locking bolt, or the locking structure (8) is an elastic positioning bead, the elastic positioning bead is provided with external threads and is connected to the threaded hole through the external threads.

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