Optical fiber coupling adjusting mechanism and optical fiber coupling system

Abstract

The invention relates to the field of optical fiber coupling, in particular to an optical fiber coupling adjusting mechanism and an optical fiber coupling system. The double-shaft adjusting assembly is arranged on the fixing frame and used for adjusting the eccentric positions of the optical fibers in the X direction and the Z direction; the ball pressure adjusting assembly is arranged on the double-shaft adjusting assembly and used for adjusting the inclination angle of the optical fiber in the X direction and / or the Z direction through movement of an adjusting ball in an adjusting frame; the optical fiber assembly is fixed on the ball pressure adjusting assembly and is used for bearing and fixing an optical fiber; and the locking assembly is used for locking and fixing the double-shaft adjusting assembly and the ball pressure adjusting assembly after adjustment is completed. The thickness of the whole system in the light path direction can be reduced while the operation is kept simple and reliable and the adjustment is precise.

Description

Technical Field

[0001] This invention relates to the field of optical fiber coupling, and more specifically, to an optical fiber coupling adjustment mechanism and an optical fiber coupling system. Background Technology

[0002] In the field of fiber optic coupling adjustment technology, existing adjustment mechanisms mainly use threaded pairs to control threaded adjustment mechanisms to change the relative position between the optical fiber and the light source in order to achieve the best coupling effect. Such adjustment mechanisms usually use a single threaded pair, in conjunction with a positioning block or bracket, to adjust the single degree of freedom of the optical fiber, which can achieve flexible adjustment.

[0003] Traditional adjustment mechanisms typically require additional or substantial space to accommodate specialized adjusting nuts, brackets, and other adjustment components. This can increase the overall system thickness and volume, limiting the device's integrability and ease of use. Because a single threaded pair controls a single degree of freedom adjustment, multiple adjusting nuts in the XYZ directions need to be operated simultaneously, leading to inconvenient adjustment. Furthermore, for some high-density integrated systems, existing fiber-optic coupling adjustment mechanisms often fail to provide sufficient compactness and integration, making it difficult to achieve optimal coupling within limited space. Additionally, traditional adjustment mechanisms cannot maintain stability and excellent coupling performance under certain external vibration excitations, such as transportation bumps and vibrations. Summary of the Invention

[0004] The purpose of this invention is to provide an optical fiber coupling adjustment mechanism that is easy to adjust, has a compact overall structure, and can maintain stability and excellent coupling effect under external vibration excitation.

[0005] Another objective of this invention is to provide an optical fiber coupling system that is easy to adjust, has a compact overall structure, and can maintain stability and excellent coupling effect under external vibration excitation.

[0006] The technical solution of this invention is implemented as follows: An optical fiber coupling adjustment mechanism includes an optical fiber assembly for carrying and fixing an optical fiber, and further includes: A fixed frame, wherein a light-transmitting hole is provided through the center of the fixed frame along the Y direction; A dual-axis adjustment assembly, disposed within the fixed frame, is used to adjust the eccentric position of the optical fiber in the X and Z directions. The tilt adjustment assembly includes an RX adjustment assembly and an RZ adjustment assembly, which are respectively disposed on the dual-axis adjustment assembly and are used to adjust the tilt angle of the optical fiber around the X and Z directions, respectively. A locking assembly is used to lock and fix the dual-axis adjustment assembly and the tilt adjustment assembly after adjustment is completed; The tilt adjustment component is also used to fix the optical fiber component, with the X direction being the left-right direction, the Y direction being the front-back direction, and the Z direction being the up-down direction.

[0007] Furthermore, the dual-axis adjustment assembly includes: An XZ adjustment block is disposed within the fixed frame. The XZ adjustment block includes an outer frame, a middle frame, and an inner frame arranged sequentially from the outside to the inside. The inner frame is fixedly connected to the fixed frame. A light-transmitting hole extending along the Y direction is provided in the middle of the inner frame. The light-transmitting hole of the inner frame is coaxially arranged with the light-transmitting hole of the fixed frame. The left and right sides of the inner frame are connected to the middle frame simultaneously through left and right deformation parts, respectively. The left and right deformation parts are flexible and can cause the middle frame to move in the X direction through their own deformation. The upper and lower sides of the middle frame are connected to the outer frame through upper and lower deformation parts, respectively. The upper and lower deformation parts are flexible and can cause the outer frame to move in the Z direction through their own deformation. The adjustment components are configured to be at least two, including an X-axis adjustment component and a Z-axis adjustment component, which are respectively disposed on adjacent sides of the fixed frame and are used to adjust the movement of the XZ adjustment block in the X and Z directions, respectively. At least two elastic elements are provided, including an X-axis elastic element and a Z-axis elastic element, which are disposed between the fixed frame and the outer frame and are respectively disposed opposite to the X-axis adjusting element and the Z-axis adjusting element. The X-axis adjusting element and the X-axis elastic element together form an X-axis clamping of the outer frame, and the Z-axis adjusting element and the Z-axis elastic element together form a Z-axis clamping of the outer frame. The X-axis elastic element and the Z-axis elastic element are respectively used for the reset of the XZ adjusting block after X-axis and Z-axis adjustment.

[0008] Furthermore, the RX adjustment component and the RZ adjustment component each have a ball pressure adjustment component, and the ball pressure adjustment component of the RX adjustment component is an RX ball pressure adjustment component, and the ball pressure adjustment component of the RZ adjustment component is an RZ ball pressure adjustment component; The RZ ball pressure regulating component includes: RZ adjusting block, the upper and lower parts of the RZ adjusting block are respectively connected to the upper and lower parts of the outer frame with RZ cross torsion springs, the upper and lower RZ cross torsion springs are coaxially arranged and used for tilting adjustment of the RZ adjusting block around the Z direction, and the upper or lower part of the RZ adjusting block is fixedly connected to the outer frame. An RZ adjustment groove for mounting an RZ adjustment column is formed along the Z direction on the XZ adjustment block. A ball groove is formed on the side wall of the RZ adjustment column, and the inner wall of the ball groove has a wedge surface. A ball track communicating with the ball groove is formed on the front side of the RZ adjustment block. The RZ adjustment ball is inserted into the ball track and abuts against the wedge surface. An RZ adjustment member and a return spring are respectively provided at both ends of the RZ adjustment column. The RZ adjustment member is used to push the RZ adjustment column to move forward by squeezing and pushing the RZ adjustment ball through the wedge surface and pushing the RZ adjustment block. Then, the RZ adjustment block can rotate around the Z direction by two upper and lower RZ cross torsion springs.

[0009] Furthermore, the RX ball pressure regulating component includes: An RX adjustment block is disposed in the inner cavity of an RZ adjustment block. The left and right parts of the RX adjustment block are respectively connected to the left and right parts of the RZ adjustment block with RX cross torsion springs. The two RX cross torsion springs are coaxially arranged and used for tilt adjustment of the RX adjustment block around the X direction. An RX ball pressure adjustment assembly includes an RX adjustment member, an RX adjustment column, and an RX adjustment ball. An RX adjustment groove for mounting the RX adjustment column is formed along the X direction on the RZ adjustment block. A ball groove is formed on the side wall of the RX adjustment column, and the inner wall of the ball groove has a wedge surface. A ball track communicating with the ball groove is formed on the front or rear side of the RZ adjustment block. The RX adjustment ball is inserted into the ball track and abuts against the wedge surface. A blocking part corresponding to the outer port of the ball track is provided on the RX adjustment block. The RX adjustment member and a return spring are respectively provided at both ends of the RX adjustment column. The RX adjustment member is used to push the RX adjustment column to compress and push the RX adjustment ball outwards from the ball track through the wedge surface. The RX adjustment ball then contacts and pushes against the blocking part, allowing the RX adjustment block to rotate around the X direction via two left and right RX cross torsion springs.

[0010] Furthermore, the top and bottom of the RZ adjusting block are respectively provided with torsion spring grooves for assembling one end of the RZ cross torsion spring, and the upper and lower parts of the outer frame are respectively provided with torsion spring fixing seats. The torsion spring fixing seats have a first arc-shaped torsion spring groove for assembling the other end of the RZ cross torsion spring. The locking assembly includes an RZ locking block, and the RZ locking block has a second arc-shaped torsion spring groove. The first arc-shaped torsion spring groove and the second arc-shaped torsion spring groove are used together to assemble one end of the RZ cross torsion spring, and the RZ locking block and the torsion spring fixing seat are locked and fixed by fasteners to lock one end of the RZ cross torsion spring.

[0011] Furthermore, the left and right walls of the inner cavity of the RX adjusting block are respectively provided with torsion spring grooves for assembling one end of the RX cross torsion spring. The left and right parts of the RX adjusting block are respectively provided with torsion spring fixing seats. The torsion spring fixing seats have a first arc-shaped torsion spring groove for assembling the other end of the RX cross torsion spring. The locking assembly includes an RX locking block. The RX locking block has a second arc-shaped torsion spring groove. The first arc-shaped torsion spring groove and the second arc-shaped torsion spring groove are used together to assemble one end of the RX cross torsion spring. The RX locking block and the torsion spring fixing seat are locked and fixed by fasteners to lock one end of the RX cross torsion spring.

[0012] Furthermore, an RZ reset spring and an RX reset spring are connected between the RX adjustment block and the RZ adjustment block.

[0013] Furthermore, the locking assembly also includes an RX fixing assembly and an XZ fixing assembly. After the optical fiber is adjusted, the RX fixing assembly is used to lock and fix the outer frame of the XZ adjusting block, the RZ adjusting block and the RX adjusting block, and the XZ fixing assembly is used to lock and fix the outer frame to the fixing frame.

[0014] Furthermore, the RX fixing component includes an RX fixing part and an RZ locking part. After the fiber is adjusted, the RX adjusting block is connected and fixed to the RZ adjusting block through the RX fixing part, and the RZ adjusting block is locked and fixed to the outer frame through the RZ locking part. The XZ fixing component includes an XZ fixing part and an XZ locking part. After the optical fiber is adjusted, the XZ fixing part is used to lock the upper part of the outer frame of the XZ adjusting block to the upper part of the fixing frame, and the XZ locking part locks the lower part of the outer frame of the XZ adjusting block to the lower part of the fixing frame.

[0015] An optical fiber coupling system includes the aforementioned optical fiber coupling adjustment mechanism.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention proposes an optical fiber coupling adjustment mechanism. It utilizes a dual-axis adjustment component to adjust the eccentric position of the optical fiber in the X and Z directions, and a tilt adjustment component to adjust the tilt angle of the optical fiber around the X and Z directions, thereby achieving multi-degree-of-freedom adjustment of the light beam. After adjustment, the entire structure is locked and fixed by a locking component. Compared with existing technical solutions, this solution has a compact overall structure, strong integration, and can achieve a better coupling effect in a limited space. Furthermore, it can maintain stability and excellent coupling effect under certain external vibration excitation, such as transportation bumps and vibrations. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an isometric view of the fiber optic coupling adjustment mechanism of the present invention; Figure 2 This is a front view of the fiber optic coupling adjustment mechanism of the present invention; Figure 3 This is an exploded view of the fiber optic coupling adjustment mechanism of the present invention; Figure 4 This is an isometric view of the XZ adjustment block of the present invention; Figure 5 This is a front view of the XZ adjustment block of the present invention; Figure 6 This is a partial assembly diagram of the RZ ball pressure adjustment structure of the present invention; Figure 7 This is a schematic diagram of the assembly of the RX ball pressure adjustment structure of the present invention; Figure 8 This is a schematic diagram of the RZ ball pressure adjustment structure of the present invention.

[0019] In the picture: 1-Fixed frame; 2-Adjustable parts; 201-Z-direction adjusting component; 202-X-direction adjusting component; 203-RZ-direction adjusting component; 204-RX-direction adjusting component; 3-XZ adjusting block; 3a-inner frame; 3b-middle frame; 3c-outer frame; 300-connecting part; 301-left deformable part; 302-right deformable part; 303-upper deformable part; 304-lower deformable part; 4-XZ fixing part; 5-cross torsion spring; 51-RZ cross torsion spring; 52-RX cross torsion spring; 6-Torsion spring fixing seat; 7-RZ adjusting ball; 8-RZ adjusting column; 9-RX adjustment block; 901-blocking part; 10-RZ adjustment block; 1004-RZ return spring; 1005-RX return spring; 1003-guide hole; 11-RZ locking part; 12-RX fixing part; 13-RX locking block; 14-RX adjusting column; 15-RX adjusting ball; 16-elastic element; 1601-Z-direction elastic element; 1602-X-direction elastic element; 17-XZ locking part; 18-fiber optic assembly; 19-fiber optic fixing base; 20-embossed handle; 21-Wedge surface; 22-Spot; 23-Fixing plate; 24-RZ locking block; 26-RZ ball pressure adjustment assembly; 27-RX ball pressure adjustment assembly; 28-RZ adjustment groove; 29-Ball groove; 30-Guide rod. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention 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, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0027] Example 1 Reference Figures 1-8 An optical fiber coupling adjustment mechanism, comprising: Fixed frame 1; Fixed frame 1, with a light-transmitting hole through the center of fixed frame 1 along the Y direction; A dual-axis adjustment assembly, set within the fixed frame 1, is used to adjust the eccentric position of the optical fiber in the X and Z directions. The tilt adjustment assembly includes an RX adjustment assembly and an RZ adjustment assembly, which are respectively mounted on the dual-axis adjustment assembly and are used to adjust the tilt angle of the optical fiber around the X and Z directions, respectively. Fiber optic assembly 18, fixed on the tilt adjustment assembly, is used to support and fix the fiber optic cable; A locking assembly is used to lock and fix the dual-axis adjustment assembly and the tilt adjustment assembly after adjustment is completed; To facilitate the explanation of orientation, an OXYZ spatial rectangular coordinate system is established, with the X direction representing the left and right directions, the Y direction representing the front and back directions, and the Z direction representing the up and down directions.

[0028] The dual-axis adjustment assembly includes: XZ adjustment block 3 is disposed within fixed frame 1. XZ adjustment block 3 includes an outer frame 3c, a middle frame 3b, and an inner frame 3a arranged sequentially from the outside to the inside. The inner frame 3a is used to fix it to the fixed frame 1. A light-transmitting hole through the Y direction is provided in the middle of the inner frame 3a. The light-transmitting hole of the inner frame 3a is coaxially arranged with the light-transmitting hole of the fixed frame 1. The left and right sides of the inner frame 3a are connected to the middle frame 3b through the left deformation part 301 and the right deformation part 302, respectively. The left deformation part 301 and the right deformation part 302 are flexible and can cause the middle frame 3b to move in the X direction through their own deformation. The upper and lower sides of the middle frame 3b are connected to the outer frame 3c through the upper deformation part 303 and the lower deformation part 304, respectively. The upper deformation part 303 and the lower deformation part 304 are flexible and can cause the outer frame 3c to move in the Z direction through their own deformation. Adjustment component 2, configured as at least two, including X-direction adjustment component 202 and Z-direction adjustment component 201, respectively disposed on adjacent sides of fixed frame 1, and respectively used to adjust the movement of XZ adjustment block 3 in X and Z directions; The elastic element 16, at least two in number, includes an X-axis elastic element 1602 and a Z-axis elastic element 1601, which are disposed between the fixed frame 1 and the outer frame 3c and are respectively disposed opposite to the X-axis adjusting element 202 and the Z-axis adjusting element 201. The X-axis adjusting element 202 and the X-axis elastic element 1602 together form an X-axis clamping of the outer frame 3c, and the Z-axis adjusting element 201 and the Z-axis elastic element 1601 together form a Z-axis clamping of the outer frame 3c. The X-axis elastic element 1602 and the Z-axis elastic element 1601 are respectively used to reset the XZ adjusting block 3 after adjustment in the X and Z directions, and provide the return force after adjustment. The XZ adjustment block 3 can be made of stainless steel, aluminum alloy or plastic.

[0029] Specifically, the inner frame 3a, the middle frame 3b, and the outer frame 3c are all rectangular frames and there are gaps between each pair. However, the inner frame 3a and the middle frame 3b are connected by the left deformable part 301 and the right deformable part 302, and the middle frame 3b and the outer frame 3c are connected by the upper deformable part 303 and the lower deformable part 304. During assembly, the inner frame 3a and the fixed frame 1 can be connected by multiple bolts and positioned and assembled by multiple locating pins. The upper left and upper right corners of the inner frame 3a are respectively provided with connecting parts 300. The left deformable part 301 and the right deformable part 302 are symmetrical structures and are symmetrically arranged on the left and right sides of the inner frame 3a. The left deformable part 301 and the right deformable part 302 are thin sheet structures. The left deformable part 301 and the right deformable part 302 are arranged in parallel, with one end connected to the connecting part 300 and the other end fixedly connected to the bottom wall of the inner cavity of the middle frame 3b. The two ends of the left deformable part 301 and the right deformable part 302 are provided with reinforcing ribs and the middle is provided with a thickened part, which is used to ensure the structural strength and connection strength, and to promote the movement of the middle frame 3b in the X direction when deformation occurs. Similarly, the upper left and lower left corners of the middle frame 3b are respectively provided with connecting parts 300. The upper deformable part 303 and the lower deformable part 304 are symmetrical structures and are symmetrically arranged above and below the middle frame 3b. The upper deformable part 303 and the lower deformable part 304 are thin sheet structures. The upper deformable part 303 and the lower deformable part 304 are arranged in parallel, with one end connected to the connecting part 300 and the other end fixedly connected to the right wall of the inner cavity of the outer frame 3c. The two ends of the upper deformable part 303 and the lower deformable part 304 are provided with reinforcing ribs and the middle is provided with a thickened part. This is to ensure the structural strength and connection strength, and to promote the movement of the middle frame 3b and the outer frame 3c in the Z direction when deformation occurs. Combined with the fact that the middle frame 3b can move in the X direction, the movement of the outer frame 3c in the X and Z directions can be realized.

[0030] Preferably, the outer frame 3c, the middle frame 3b, the inner frame 3a, and each deformable part are integrally formed, and each deformable part includes an upper deformable part 303, a lower deformable part 304, a left deformable part 301, and a right deformable part 302.

[0031] Both the X-axis adjusting member 202 and the Z-axis adjusting member 201 use adjusting nuts. A threaded hole for installing the Z-axis adjusting member 201 is provided longitudinally (Z-axis) on the top of the fixed frame 1. The bottom of the Z-axis adjusting member 201 abuts against the top of the XZ adjusting block 3. Tightening the Z-axis adjusting member 201 drives the outer frame 3c to move in the Z-axis, thus performing Z-axis adjustment. A threaded hole for installing the X-axis adjusting member 202 is provided transversely (X-axis) on the left side of the fixed frame 1. The right end of the X-axis adjusting member 202 abuts against the left side of the XZ adjusting block 3. Tightening the X-axis adjusting member 202 drives the outer frame 3c to move in the X-axis, thus performing X-axis adjustment. The two elastic elements 16 can be reset springs, and are respectively located on the right side and bottom of the outer frame 3c. After the outer frame 3c is adjusted in the X or Z direction, and the X-direction adjusting element 202 and the Z-direction adjusting element 201 are screwed to the initial position, the two elastic elements 16 provide reset after the X and Z direction adjustment, so that the outer frame 3c and the middle frame 3b return to the initial position.

[0032] The RX adjustment assembly and the RZ adjustment assembly each have a ball pressure adjustment assembly, which has the same structure but different installation positions. For easy distinction, the ball pressure adjustment assembly of the RX adjustment assembly is defined as RX ball pressure adjustment assembly 27, and the ball pressure adjustment assembly of the RZ adjustment assembly is defined as RZ ball pressure adjustment assembly 26, as detailed below: RZ adjusting block 10, the upper and lower parts of RZ adjusting block 10 are respectively connected to the upper and lower parts of outer frame 3c with RZ cross torsion springs 51. The upper and lower RZ cross torsion springs 51 are coaxially arranged for tilting adjustment of RZ adjusting block 10 around Z direction. At the same time, the upper or lower part of RZ adjusting block 10 is fixedly connected to outer frame 3c, so that RZ adjusting block 10 can move with outer frame 3c. The axis of RZ cross torsion spring 51 is Z direction. The RZ ball pressure adjustment assembly 26 includes an RZ adjustment member 203, an RZ adjustment column 8, and an RZ adjustment ball 7. An RZ adjustment groove 28 for mounting the RZ adjustment column 8 is formed along the Z direction on the XZ adjustment block 3, for example, the RZ adjustment groove 28 is formed at the top left end of the XZ adjustment block 3. A ball groove 29 is formed on the side wall of the RZ adjustment column 8. The inner wall of the ball groove 29 has a wedge surface 21. When the RZ adjustment column 8 is installed, the wedge surface 21 faces forward. A ball track 22 communicating with the ball groove 29 is formed on the front side of the RZ adjustment block 10. The RZ adjustment ball 7 is inserted from the ball track 22 and abuts against the wedge surface 21. An RZ adjustment member 203 and a return spring are respectively provided at both ends of the RZ adjustment column 8. The RZ adjustment member 203 is used to push the RZ adjustment column 8 to squeeze and push the RZ adjustment ball 7 forward through the wedge surface 21 and push the RZ adjustment block 10. Then, the RZ adjustment block 10 can rotate around the Z direction by the upper and lower RZ cross torsion springs 51. A guide rod 30 can be installed at the bottom of the RZ adjusting column 8, and a guide hole 1003 for installing the guide rod 30 is correspondingly opened at the bottom of the RZ adjusting groove 28. The guide rod 30 and the guide hole 1003 are both vertically arranged and slidably connected. The return spring in the RZ adjusting groove 28 is located on the outside of the guide rod 30. When the RZ adjusting component 203 is turned and the RZ adjusting column 8 is pushed, the guide rod 30 moves vertically along the guide hole 1003, providing vertical guidance and compressing the return spring. When the RZ adjusting component 203 returns to its original position, the return spring provides a return force.

[0033] The RX adjustment block 9 is located inside the RZ adjustment block 10. The left and right parts of the RX adjustment block 9 are connected to the left and right parts of the RZ adjustment block 10, respectively, with RX cross torsion springs 52. The two RX cross torsion springs 52 are coaxially arranged and used for tilt adjustment of the RX adjustment block 9 around the X direction. The axis of the RX cross torsion springs 52 is the X direction. The center of the RX adjustment block 9 is provided with an assembly hole for assembling the fiber optic assembly 18. The RX ball pressure adjustment assembly 27 includes an RX adjustment component 204, an RX adjustment column 14, and an RX adjustment ball 15. An RX adjustment groove for mounting the RX adjustment column 14 is opened on the RZ adjustment block 10 along the X direction. A ball groove 29 is opened on the side wall of the RX adjustment column 14. The inner wall of the ball groove 29 has a wedge surface 21. When the RX adjustment column 14 is installed, the wedge surface 21 faces backward. The rear side of the RZ adjusting block 10 has a ball track 22 that communicates with the ball groove 29. The RX adjusting ball 15 is inserted into the ball track 22 and abuts against the wedge surface 21. The RX adjusting block 9 is provided with a blocking part 901 corresponding to the outer port of the ball track 22. The blocking part 901 is located behind the RX adjusting ball 15. The two ends of the RX adjusting column 14 are respectively provided with an RX adjusting member 204 and a return spring. The RX adjusting member 204 is used to push the RX adjusting column 14 to squeeze and push the RX adjusting ball 15 out of the ball track 22 through the wedge surface 21. Then the RX adjusting ball 15 contacts the blocking part 901 and pushes against the blocking part 901, so that the RX adjusting block 9 can rotate around the X direction by the two left and right RX cross torsion springs 52. A guide rod 30 can be installed on the right side of the RX adjusting column 14, and a guide hole 1003 for installing the guide rod 30 is correspondingly opened on the right side of the RZ adjusting groove 28. The guide rod 30 and the guide hole 1003 are both arranged along the X direction and are slidably connected therebetween. The return spring in the RX adjusting groove is located on the outside of the guide rod 30. When the RX adjusting component 204 is turned and the RX adjusting column 14 is pushed, the guide rod 30 moves vertically along the guide hole 1003, providing vertical guidance and compressing the return spring. When the RX adjusting component 204 returns to its original position, the return spring provides a return force.

[0034] The top and bottom of the RZ adjusting block 10 are respectively provided with torsion spring grooves for assembling one end of the RZ cross torsion spring 51. The upper and lower parts of the outer frame 3c are respectively provided with torsion spring fixing seats 6. The torsion spring fixing seats 6 have a first arc-shaped torsion spring groove for assembling the other end of the RZ cross torsion spring 51. The locking assembly includes an RZ locking block 24. The RZ locking block 24 has a second arc-shaped torsion spring groove. The first arc-shaped torsion spring groove and the second arc-shaped torsion spring groove are used together to assemble one end of the RZ cross torsion spring 51. The RZ locking block 24 and the torsion spring fixing seat 6 are locked and fixed by fasteners to lock one end of the RZ cross torsion spring 51. Similarly, the left and right walls of the inner cavity of the RX adjusting block 9 are respectively provided with torsion spring grooves for assembling one end of the RX cross torsion spring 52. The left and right parts of the RX adjusting block 9 are respectively provided with torsion spring fixing seats 6. The torsion spring fixing seats 6 have a first arc-shaped torsion spring groove for assembling the other end of the RX cross torsion spring 52. The locking assembly includes an RX locking block 13, on which a second arc-shaped torsion spring groove is provided. The first arc-shaped torsion spring groove and the second arc-shaped torsion spring groove are used together for assembling one end of the RX cross torsion spring 52, and the RX locking block 13 and the torsion spring fixing seat 6 are locked and fixed by fasteners to lock one end of the RX cross torsion spring 52. Preferably, both the first arc-shaped torsion spring groove and the second torsion spring groove are semi-circular grooves.

[0035] The RX torsion spring 52 and the RZ torsion spring 51 are the same; both are torsion spring 5s.

[0036] An RZ return spring 1004 and an RX return spring 1005 are also connected between the RX adjusting block 9 and the RZ adjusting block 10. When the RZ adjusting member 203 returns to its original position, the RZ return spring 1004 provides a return force. When the RX adjusting member 204 returns to its original position, the RX return spring 1005 provides a return force.

[0037] The locking assembly includes multiple locking blocks, including RZ locking block 24 and RX locking block 13, which have the same structure. The locking assembly also includes an RX fixing assembly and an XZ fixing assembly. After the fiber optic adjustment is completed, the RX fixing assembly is used to lock and fix the outer frame 3c of the XZ adjusting block 3, the RZ adjusting block 10 and the RX adjusting block 9. The XZ fixing assembly is used to lock and fix the outer frame 3c to the fixed frame 1.

[0038] The RX fixing assembly includes an RX fixing part 12 and an RZ locking part 11. After the fiber optic adjustment is completed, the RX adjusting block 9 is connected and fixed to the RZ adjusting block 10 through the RX fixing part 12. One end of the RX fixing part 12 is connected to the RX adjusting block 9 by a screw, and the other end is connected to the RZ adjusting block 10 by a bolt. The RZ adjusting block 10 is locked and fixed to the outer frame 3c through the RZ locking part 11. The RZ locking part 11 is located on the upper part of the RZ adjusting block 10. One end of it is fixed to the RZ adjusting block 10, and the other end is connected to the outer frame 3c by a screw. Preferably, the RZ locking part 11 and the RZ adjusting block 10 are integrally formed.

[0039] The XZ fixing assembly includes an XZ fixing part 4 and an XZ locking part 17. After the fiber optic adjustment is completed, the XZ fixing part 4 is used to lock and fix the upper part of the outer frame 3c of the XZ adjusting block 3 to the upper part of the fixing frame 1. A fixing piece 23 is provided on the top of the XZ adjusting block 3. When fixing, the fixing piece 23 is attached to the front side of the fixing frame 1, the XZ fixing part 4 is attached to the front side of the fixing piece 23, and the XZ fixing part 4, the fixing piece 23 and the fixing frame 1 are locked by multiple locking bolts and fastened by multiple pins.

[0040] The XZ locking part 17 locks and fixes the lower part of the outer frame 3c of the XZ adjusting block 3 to the lower part of the fixed frame 1. The lower part of the rear side of the fixed frame 1 is provided with an assembly groove for assembling the XZ locking part 17. The XZ locking part 17 is installed in the assembly groove and is connected and fixed to the lower part of the XZ adjusting block 3 by multiple bolts.

[0041] The structure of the fiber optic assembly 18 is existing technology and will not be described in detail here. During installation, the fiber optic assembly 18 is assembled into the assembly hole in the center of the RX adjustment block 9 through the fiber optic fixing seat 19 and tightened with multiple embossed handles 20. An elastic element 16 (spring) is also provided on the outside of the screw of the embossed handle 20.

[0042] The adjustment method is as follows: multi-degree-of-freedom adjustment is achieved through the adjustment component 2. Multiple adjustment components 2, such as X-axis adjustment component 202, Z-axis adjustment component 201, RX adjustment component 204, and RZ adjustment component 203, can be used to adjust the XZ degree of freedom through the Z-axis adjustment component 201 and the X-axis adjustment component 202 respectively, the RZ degree of freedom through the RZ adjustment component 203, and the RX degree of freedom through the RX adjustment component 204. After the adjustment is completed, the various parts of the locking assembly are assembled and locked to complete the adjustment.

[0043] This invention proposes an optical fiber coupling adjustment mechanism. It utilizes a dual-axis adjustment component to adjust the eccentric position of the optical fiber in the X and Z directions, and a tilt adjustment component to adjust the tilt angle of the optical fiber around the X and Z directions, thereby achieving multi-degree-of-freedom adjustment of the light beam. After adjustment, the entire structure is locked and fixed by a locking component. Compared with existing technical solutions, this solution has a compact overall structure, strong integration, and can achieve a better coupling effect in a limited space. Furthermore, it can maintain stability and excellent coupling effect under certain external vibration excitation, such as transportation bumps and vibrations.

[0044] This solution has the following advantages: 1. The fusion of threaded adjustment and ball pressure adjustment mechanisms in the fiber optic coupling adjustment mechanism enables tilt adjustment without the need for an optical axis direction adjustment nut. This design simplifies the structure, reduces redundant space in the optical axis direction, and improves adjustment accuracy and convenience, making it particularly suitable for miniaturized, high-precision fiber optic coupling systems.

[0045] 2. The design of the locking components and the flexible structure design optimize the coupling efficiency during locking. The invention adopts a unique flexible structure design to ensure that the best contact state between the components can be maintained during the locking process, avoiding the problem of reduced coupling efficiency due to uneven stress, and reducing the sensitivity to external environmental stimuli to cope with transportation and specific working environments.

[0046] Example 2 An optical fiber coupling system includes the aforementioned optical fiber coupling adjustment mechanism.

[0047] The beneficial effects of the technical solution of the present invention are: 1. More compact: Compared with the traditional method, it reduces the space occupied along the optical axis, making it suitable for small devices.

[0048] 2. Easier adjustment: The X / Z position and tilt angle can be adjusted by simply adjusting the nuts in two directions.

[0049] 3. More stable: The flexible structure and locking design can effectively reduce the decrease in coupling efficiency caused by vibration or tightening.

[0050] 4. Wide applicability: It is particularly suitable for fiber optic coupling scenarios with high space requirements and high adjustment precision, such as optical modules and laser packaging.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

[0052] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An optical fiber coupling adjustment mechanism, comprising an optical fiber assembly (18) for carrying and fixing an optical fiber, characterized in that, Also includes: A fixed frame (1) is provided with a light-transmitting hole through the Y direction at its center; A dual-axis adjustment assembly is set inside the fixed frame (1) and is used to adjust the eccentric position of the optical fiber in the X and Z directions; The tilt adjustment assembly includes an RX adjustment assembly and an RZ adjustment assembly, which are respectively disposed on the dual-axis adjustment assembly and are used to adjust the tilt angle of the optical fiber around the X and Z directions, respectively. A locking assembly is used to lock and fix the dual-axis adjustment assembly and the tilt adjustment assembly after adjustment is completed; The tilt adjustment component is also used to fix the optical fiber component (18), with the X direction being the left-right direction, the Y direction being the front-back direction, and the Z direction being the up-down direction.

2. The fiber optic coupling adjustment mechanism according to claim 1, characterized in that, The dual-axis adjustment assembly includes: The XZ adjustment block (3) is disposed within the fixed frame (1). The XZ adjustment block (3) includes an outer frame (3c), a middle frame (3b), and an inner frame (3a) arranged sequentially from the outside to the inside. The inner frame (3a) is used to fix it to the fixed frame (1). A light-transmitting hole is provided in the middle of the inner frame (3a) along the Y direction. The light-transmitting hole of the inner frame (3a) is coaxially arranged with the light-transmitting hole of the fixed frame (1). The left and right sides of the inner frame (3a) are respectively connected by a left deformation part (301) and a right deformation part (301). The part (302) is connected to the middle frame (3b). The left deformable part (301) and the right deformable part (302) are flexible and can cause the middle frame (3b) to move in the X direction through their own deformation. The upper and lower sides of the middle frame (3b) are connected to the outer frame (3c) through the upper deformable part (303) and the lower deformable part (304) respectively. The upper deformable part (303) and the lower deformable part (304) are flexible and can cause the outer frame (3c) to move in the Z direction through their own deformation. Adjustment components (2) are provided in at least two, including an X-axis adjustment component (202) and a Z-axis adjustment component (201), which are respectively provided on adjacent sides of the fixed frame (1) and are used to adjust the movement of the XZ adjustment block (3) in the X and Z directions; The elastic element (16) is provided in at least two forms, including an X-axis elastic element (1602) and a Z-axis elastic element (1601), which are disposed between the fixed frame (1) and the outer frame (3c) and are respectively disposed opposite to the X-axis adjusting element (202) and the Z-axis adjusting element (201). The X-axis adjusting element (202) and the X-axis elastic element (1602) together form an X-axis clamping on the outer frame (3c), and the Z-axis adjusting element (201) and the Z-axis elastic element (1601) together form a Z-axis clamping on the outer frame (3c). The X-axis elastic element (1602) and the Z-axis elastic element (1601) are respectively used for the reset of the XZ adjusting block (3) after X-axis and Z-axis adjustment.

3. The fiber optic coupling adjustment mechanism according to claim 2, characterized in that, The RX adjustment component and the RZ adjustment component each have a ball pressure adjustment component, and the ball pressure adjustment component of the RX adjustment component is the RX ball pressure adjustment component (27), and the ball pressure adjustment component of the RZ adjustment component is the RZ ball pressure adjustment component (26). RZ adjustment block (10), the upper and lower parts of the RZ adjustment block (10) are respectively connected to the upper and lower parts of the outer frame (3c) with RZ cross torsion springs (51), the upper and lower RZ cross torsion springs (51) are coaxially arranged for the tilt adjustment of the RZ adjustment block (10) around the Z direction, and the upper or lower part of the RZ adjustment block (10) is fixedly connected to the outer frame (3c); The RZ ball pressure adjustment assembly (26) includes an RZ adjustment component (203), an RZ adjustment column (8), and an RZ adjustment ball (7). An RZ adjustment groove (28) for mounting the RZ adjustment column (8) is formed along the Z direction on the XZ adjustment block (3). A ball groove (29) is formed on the side wall of the RZ adjustment column (8), and the inner wall of the ball groove (29) has a wedge surface (21). A ball track (22) communicating with the ball groove (29) is formed on the front side of the RZ adjustment block (10). The adjusting ball (7) is inserted from the ball track (22) and abuts against the wedge surface (21). The RZ adjusting member (203) and the return spring are respectively provided at both ends of the RZ adjusting column (8). The RZ adjusting member (203) is used to push the RZ adjusting column (8) to squeeze and push the RZ adjusting ball (7) forward through the wedge surface (21) and push the RZ adjusting block (10). Then the RZ adjusting block (10) can rotate around the Z direction through the upper and lower RZ cross torsion springs (51).

4. The fiber optic coupling adjustment mechanism according to claim 3, characterized in that, It also includes an RX adjustment block (9), which is disposed in the inner cavity of the RZ adjustment block (10). The left and right parts of the RX adjustment block (9) are respectively connected to the left and right parts of the RZ adjustment block (10) with RX cross torsion springs (52). The two RX cross torsion springs (52) are coaxially arranged and used for the tilt adjustment of the RX adjustment block (9) around the X direction. The RX ball pressure adjustment assembly (27) includes an RX adjustment component (204), an RX adjustment column (14), and an RX adjustment ball (15). An RX adjustment groove for mounting the RX adjustment column (14) is formed along the X direction on the RZ adjustment block (10). A ball groove (29) is formed on the side wall of the RX adjustment column (14), and the inner wall of the ball groove (29) has a wedge surface (21). A ball track (22) communicating with the ball groove (29) is formed on the front or rear side of the RZ adjustment block (10). The RX adjustment ball (15) is inserted into the ball track (22) and abuts against the wedge surface (21). The RX adjustment block (9) is provided with a blocking part (901) corresponding to the outer port of the ball track (22). The two ends of the RX adjustment column (14) are respectively provided with the RX adjustment member (204) and the return spring. The RX adjustment member (204) is used to push the RX adjustment column (14) to squeeze and push the RX adjustment ball (15) out of the ball track (22) through the wedge surface (21). Then the RX adjustment ball (15) contacts the blocking part (901) and pushes the blocking part (901), so that the RX adjustment block (9) can rotate around the X direction through the two left and right RX cross torsion springs (52).

5. The fiber optic coupling adjustment mechanism according to claim 4, characterized in that, The top and bottom of the RZ adjusting block (10) are respectively provided with torsion spring grooves for assembling one end of the RZ cross torsion spring (51). The upper and lower parts of the outer frame (3c) are respectively provided with torsion spring fixing seats (6). The torsion spring fixing seat (6) has a first arc-shaped torsion spring groove for assembling the other end of the RZ cross torsion spring (51). The locking assembly includes an RZ locking block (24). The RZ locking block (24) has a second arc-shaped torsion spring groove. The first arc-shaped torsion spring groove and the second arc-shaped torsion spring groove are used together to assemble one end of the RZ cross torsion spring (51). The RZ locking block (24) and the torsion spring fixing seat (6) are locked and fixed by fasteners to lock one end of the RZ cross torsion spring (51).

6. The fiber optic coupling adjustment mechanism according to claim 4, characterized in that, The left and right walls of the inner cavity of the RX adjusting block (9) are respectively provided with torsion spring grooves for assembling one end of the RX cross torsion spring (52). The left and right parts of the RX adjusting block (9) are respectively provided with torsion spring fixing seats (6). The torsion spring fixing seats (6) are provided with a first arc-shaped torsion spring groove for assembling the other end of the RX cross torsion spring (52). The locking assembly includes an RX locking block (13). The RX locking block (13) is provided with a second arc-shaped torsion spring groove. The first arc-shaped torsion spring groove and the second arc-shaped torsion spring groove are used together to assemble one end of the RX cross torsion spring (52). The RX locking block (13) and the torsion spring fixing seat (6) are locked and fixed by fasteners to lock one end of the RX cross torsion spring (52).

7. The fiber optic coupling adjustment mechanism according to claim 4, characterized in that, An RZ reset spring (1004) and an RX reset spring (1005) are also connected between the RX adjustment block (9) and the RZ adjustment block (10).

8. The fiber optic coupling adjustment mechanism according to claim 4, characterized in that, The locking assembly also includes an RX fixing assembly and an XZ fixing assembly. After the fiber is adjusted, the RX fixing assembly is used to lock and fix the outer frame (3c) of the XZ adjusting block (3), the RZ adjusting block (10) and the RX adjusting block (9). The XZ fixing assembly is used to lock and fix the outer frame (3c) and the fixing frame (1).

9. The fiber optic coupling adjustment mechanism according to claim 8, characterized in that, The RX fixing assembly includes an RX fixing part (12) and an RZ locking part (11). After the fiber is adjusted, the RX adjusting block (9) is connected and fixed to the RZ adjusting block (10) through the RX fixing part (12), and the RZ adjusting block (10) is locked and fixed to the outer frame (3c) through the RZ locking part (11). The XZ fixing component includes an XZ fixing part (4) and an XZ locking part (17). After the optical fiber is adjusted, the XZ fixing part (4) is used to lock the upper part of the outer frame (3c) of the XZ adjusting block (3) to the upper part of the fixing frame (1), and the XZ locking part (17) locks the lower part of the outer frame (3c) of the XZ adjusting block (3) to the lower part of the fixing frame (1).

10. An optical fiber coupling system, characterized in that, Includes the fiber optic coupling adjustment mechanism as described in any one of claims 1-9.

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