Optical fiber clamping fixture and method of use

Abstract

The application relates to the technical field of optical communication devices, and provides an optical fiber clamping fixing device and a using method thereof.The optical fiber clamping fixing device comprises an optical fiber chuck shell, a push rod, a spring and a pressing plate.The pressing plate comprises a clamping part and a positioning part, the positioning part is close to the lower end of the optical fiber chuck shell, is inserted into the optical fiber chuck shell, and forms a rotating shaft structure with a pin shaft on the optical fiber chuck shell.The positioning part is inserted into one end of the optical fiber chuck shell, is coupled with one end of the push rod located in the optical fiber chuck shell, so that the positioning part is driven to rotate at a small angle around the pin shaft by the push rod going up and down.The spring is located in the interior of the optical fiber chuck shell and is used for lifting the push rod, so that the push rod limits the positioning part and promotes the clamping part to clamp the optical fiber.The optical device product research and development and production process require that the device is simple and reliable in structure, convenient to operate in the process of clamping the optical fiber, and cannot damage the optical fiber and cannot affect the use of subsequent processes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical communication devices, in particular to an optical fiber clamping and fixing device and a method thereof. BACKGROUND

[0002] In the field of optical communication device production and manufacturing, especially for certain types of optical device products, during the coupling test and early incoming inspection process of research and production and manufacturing, it is necessary to clamp and fix the optical fiber bare fiber in a small space.

[0003] At present, the optical fiber clamping and fixing devices on the market are mainly vacuum adsorption type and magnetic adsorption pressing plate type.

[0004] The vacuum adsorption type usually contains a large number of components, and needs to use special vacuum equipment and sealing system, which increases the complexity and maintenance cost of the device; in order to maintain a constant vacuum state, the vacuum adsorption device needs to consume energy continuously, resulting in high energy consumption; and the vacuum adsorption type clamping device is easily affected by the environment, and the change of environmental conditions (such as temperature, humidity, etc.) may affect the performance of the vacuum adsorption device, resulting in instability of the clamping force.

[0005] The defects of the magnetic adsorption pressing plate type clamping device are as follows: limiting the type of optical fiber, the magnetic adsorption pressing plate type device usually needs the optical fiber to have a certain magnetism, so it is only suitable for a specific type of optical fiber material, and it is not suitable for optical fibers made of non-magnetic materials; susceptible to magnetic field interference, the magnetic field generated by the magnetic adsorption device may interfere with the surrounding electronic equipment and electromagnetic signals, affecting the normal work of the equipment; non-constant clamping force, the clamping force of the magnetic adsorption device is affected by the magnetic field, which may fluctuate with the change of the magnetic field, resulting in instability of the position of the optical fiber.

[0006] In addition, the above two devices are large in size and complex in structure, and the integration of optical devices or modules is getting higher and higher, so such devices are not suitable for occasions with limited space, high clamping and fixing stability requirements and limited funds.

[0007] Therefore, overcoming the defects of the prior art is an urgent problem to be solved in the technical field. SUMMARY

[0008] The technical problem to be solved by the present application is that the existing optical fiber clamping and fixing device is large in size, complex in structure, unstable in clamping, and inconvenient to clamp and fix the optical fiber bare fiber in a small space.

[0009] The present application adopts the following technical solutions:

[0010] In a first aspect, the present application provides an optical fiber clamping and fixing device, which comprises: an optical fiber chuck shell 1, a push rod 2, a spring 3 and a pressing plate 4.

[0011] The pressing plate 4 comprises a clamping part 40 and a positioning part 41, the positioning part 41 is inserted into the fiber holder shell 1 near the lower end of the fiber holder shell 1, and forms a pivot structure with the pin shaft 10 on the fiber holder shell 1;

[0012] The positioning part 41 is inserted into one end of the fiber holder shell 1, and is coupled with one end of the push rod 2 located in the fiber holder shell 1, so that the positioning part 41 is rotated by a small angle around the pin shaft 10 under the up and down driving of the push rod 2;

[0013] The spring 3 is located in the inside of the fiber holder shell 1, and is used to lift the push rod 2, so that the push rod 2 promotes the clamping part 40 to clamp the optical fiber 6 after the positioning part 41 is defined.

[0014] Preferably, when the vertical surface of the pressing plate 4 is parallel to the vertical surface of the fiber holder shell 1, there is a gap between the vertical surface inside the clamping part 40 and the fiber holder shell 1.

[0015] Preferably, the side wall near the lower end of the fiber holder shell 1 is provided with a first accommodating groove 11, the first accommodating groove 11 accommodates the optical fiber 6, and the first accommodating groove 11 is in one of V-shaped, square or semicircular shapes;

[0016] When the first accommodating groove 11 is in a V-shaped form, the angle bisector of the included angle between the two sides of the V-shaped groove is perpendicular to the vertical surface of the clamping part 40 when the vertical surface of the clamping part 40 abuts against the fiber holder shell 1.

[0017] Preferably, the spring 3 is a small-diameter coil spring, and the spring 3 is arranged in one of the following ways: surrounding the push rod 2 or abutting against the lower end of the push rod 2;

[0018] When the spring 3 surrounds the push rod 2, the push rod 2 is inserted into the hollow part of the spring 3;

[0019] The fiber holder shell 1 is provided with a first circular groove 12 extending from the upper surface of the fiber holder shell 1 to the inside of the fiber holder shell 1, the first circular groove 12 accommodates the spring 3, and one end of the spring 3 abuts against the bottom of the first circular groove 12;

[0020] Preferably, the optical fiber clamping and fixing device further comprises a pressing head 5, and the pressing head 5 is fixedly connected with the upper end of the push rod 2;

[0021] The pressing head 5 is provided with a second circular groove 50 extending from the lower surface of the pressing head 5 to the inside of the pressing head 5, the second circular groove 50 accommodates the spring 3, and the other end of the spring 3 abuts against the bottom of the second circular groove 50.

[0022] Preferably, the positioning part 41 is inserted into one end of the fiber holder shell 1 and coupled with the end of the push rod 2 located in the fiber holder shell 1, in particular, the end of the push rod 2 has a small-diameter shaft segment 20, the positioning part 41 of the pressing plate 4 is provided with a first groove 410, and the small-diameter shaft segment 20 is clamped in the first groove 410.

[0023] Preferably, the lower end of the fiber holder shell 1 is provided with a second groove 13, and the second groove 13 accommodates the positioning part 41.

[0024] Preferably, the positioning part 41 is provided with a first through hole 411, the first through hole 411 is arranged between the clamping part 40 and the first groove 410, the pin shaft 10 is inserted into the first through hole 411, and the two ends of the pin shaft 10 are connected with the side wall of the second groove 13.

[0025] Preferably, the inner side of the upper end of the clamping part 40 is provided with an inclined surface 400, and when the lower end of the clamping part 40 is separated from the fiber holder shell 1, the inclined surface 400 abuts against the surface of the fiber holder shell 1.

[0026] In a second aspect, the present application provides a use method of the fiber clamping and fixing device, and the use method comprises the following steps.

[0027] When clamping the fiber 6, downward pressure is applied to the push rod 2, the push rod 2 moves downward under the action of the downward pressure, drives the pressing plate 4 to rotate clockwise around the pin shaft 10, the spring 3 is compressed, and the lower end of the clamping part 40 of the pressing plate 4 is separated from the surface of the fiber holder shell 1.

[0028] The fiber 6 is placed in the reserved position of the fiber holder shell 1, the downward pressure applied to the push rod 2 is released, the push rod 2 moves upward under the upward action of the spring 3, thereby driving the pressing plate 4 to rotate counterclockwise, the clamping part 40 of the pressing plate 4 abuts against the surface of the fiber holder shell 1, and the fiber 6 is clamped and fixed on the device.

[0029] Compared with the prior art, the present application has the following beneficial effects:

[0030] The present application drives the pressing plate 4 to abut against the fiber holder shell 1 by applying pressure to the push rod 2, so as to achieve the purpose of stably clamping the fiber 6; the spring 3 arranged can play a buffering role when pressure is applied to the push rod 2, and can lift the push rod 2 when the pressure applied to the push rod 2 is released and the push rod 2 needs to move upward and the pressing plate 4 abuts against the fiber holder shell 1. The fiber 6 is clamped and fixed by using a mechanical method, which overcomes the problems of the existing vacuum adsorption type and magnetic adsorption pressing plate type clamping and fixing devices, such as large size, complex structure and unstable clamping.

[0031] The optical fiber clamping and fixing device provided by the application meets the requirements of optical device product research and development and production process, has simple and reliable structure, is convenient to clamp optical fiber and will not damage the optical fiber and affect the subsequent process. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0033] Figure 1 is a schematic diagram of the overall structure of an optical fiber clamping and fixing device provided by embodiment 1 of the present application;

[0034] Figure 2 is a schematic diagram of a pressing plate of an optical fiber clamping and fixing device provided by embodiment 1 of the present application;

[0035] Figure 3 is a schematic diagram of a second groove of an optical fiber chuck shell of an optical fiber clamping and fixing device provided by embodiment 1 of the present application;

[0036] Figure 4 is a schematic diagram of a push rod of an optical fiber clamping and fixing device provided by embodiment 1 of the present application;

[0037] Figure 5 is a schematic diagram of a first accommodating groove of an optical fiber clamping and fixing device provided by embodiment 1 of the present application;

[0038] Figure 6 is a sectional view of an optical fiber clamping and fixing device provided by embodiment 1 of the present application;

[0039] Figure 7 is a schematic diagram of a spring located at the lower end of a push rod of an optical fiber clamping and fixing device provided by embodiment 1 of the present application;

[0040] Figure 8 is a schematic diagram of the use process of an optical fiber clamping and fixing device provided by embodiment 1 of the present application;

[0041] Figure 9 is a schematic diagram of the use process of an optical fiber clamping and fixing device provided by embodiment 1 of the present application;

[0042] Figure 10 is a schematic diagram of the overall structure of an optical fiber clamping and fixing device provided by embodiment 2 of the present application;

[0043] Figure 11is a clamping arm assembly schematic view of a fiber adsorption fixing device provided by embodiment 2 of the present application;

[0044] Figure 12 is a combination schematic view of a clamping arm assembly and a fiber clamping fixing device of a fiber adsorption fixing device provided by embodiment 2 of the present application;

[0045] Figure 13 is a schematic view of a fiber rotating mechanism of a fiber adsorption fixing device provided by embodiment 2 of the present application;

[0046] Figure 14 is a schematic view of a second locking screw cooperating with a cylindrical magnet of a fiber adsorption fixing device provided by embodiment 2 of the present application;

[0047] Figure 15 is a schematic view of a second locking screw cooperating with a cylindrical magnet of a fiber adsorption fixing device provided by embodiment 2 of the present application;

[0048] Figure 16 is a sectional view of a vacuum adsorption unit of a fiber adsorption fixing device provided by embodiment 2 of the present application.

[0049] Among them, the reference signs are:

[0050] 1-fiber chuck shell, 10-pivot, 11-first accommodating groove, 12-first circular groove, 13-second groove, 14-third through hole, 2-push rod, 20-small diameter shaft section, 21-external thread, 3-spring, 4-pressing plate, 40-clamping part, 400-inclined surface, 41-positioning part, 410-first recess, 411-first through hole, 5-downward pressing head, 50-second circular groove, 51-second through hole, 6-fiber, 7-fiber rotating mechanism, 70-rotary knob, 71-fixed block, 710-second accommodating groove, 711-cylindrical magnet, 72-fiber pressing block, 720-second locking screw, 73-fixed support, 730-first locking screw, 74-bottom plate, 8-clamping arm assembly, 80-clamping groove, 81-pressing plate, 810-first magnet, 82-plate seat, 820-second magnet, 9-vacuum adsorption unit, 90-vacuum sealed cavity, 91-joint, 92-fiber suction nozzle. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solutions and advantages of the present application more clear and understandable, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0052] In the description of the present application, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and not required that the present application must be constructed and operated in a particular orientation, and therefore should not be understood as a limitation on the present application.

[0053] The terms "first", "second", etc. in the present application are only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0054] In the present application, unless otherwise specified and limited, the term "connection" should be understood broadly, for example, "connection" can be fixed connection, or detachable connection, or integral; can be directly connected, or indirectly connected through intermediate medium.

[0055] In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as there is no conflict.

[0056] Embodiment 1:

[0057] The embodiment 1 of the present application provides a kind of optical fiber clamping fixing device, as shown in Figure 1 Including: optical fiber chuck shell 1, push rod 2, spring 3 and pressing plate 4.

[0058] As shown in Figure 2 The pressing plate 4 includes clamping part 40 and positioning part 41, the positioning part 41 is close to the lower end of the optical fiber chuck shell 1, inserts into the optical fiber chuck shell 1, and forms a rotating shaft structure with the pin shaft 10 on the optical fiber chuck shell 1. Specifically, as shown in Figure 3 The lower end of the optical fiber chuck shell 1 is provided with a second groove 13, and the second groove 13 accommodates the positioning part 41;The positioning part 41 is provided with a first through hole 411, and the first through hole 411 is arranged between the clamping part 40 and the first groove 410, the pin shaft 10 is inserted into the first through hole 411, and the two ends of the pin shaft 10 are connected with the side wall of the second groove 13. In actual application scenarios, the connection mode of the pin shaft 10 and the optical fiber chuck shell 1 is fixed connection or rotating connection, and in the preferred scheme, in order to make the rotation of the pressing plate 4 more sensitive, the connection mode of the pin shaft 10 and the optical fiber chuck shell 1 is rotating connection, and the pin shaft 10 and the optical fiber chuck shell 1 are matched with small interference, and matched with small gap with the first through hole 411.

[0059] The positioning part 41 is inserted into one end of the fiber chuck shell 1 and coupled with one end of the push rod 2 located in the fiber chuck shell 1, so that the positioning part 41 is driven to rotate a small angle around the pin shaft 10 by the push rod 2.

[0060] Specifically, the positioning part 41 is inserted into one end of the fiber chuck shell 1 and coupled with one end of the push rod 2 located in the fiber chuck shell 1, specifically, as shown in the figure, Figure 4 The end of the push rod 2 has a small-diameter shaft segment 20, and the positioning part 41 of the pressing plate 4 is provided with a first groove 410, and the small-diameter shaft segment 20 is clamped in the first groove 410. In the actual processing process, the connection mode of the pressing plate 4 and the push rod 2 can be pin shaft 10 connection, welding or bolt connection, as well as the clamping of the small-diameter shaft segment 20 and the first groove 410. The connection mode of the small-diameter shaft segment 20 and the first groove 410 is selected, which has the advantages of simple processing mode, no need to consider the problem of hole position symmetry during processing, and simple and convenient installation mode.

[0061] The spring 3 is located in the inside of the fiber chuck shell 1, and is used for lifting the push rod 2, so that the push rod 2 limits the positioning part 41, and the clamping part 40 clamps the optical fiber 6. Specifically, in the actual application scene, there are many ways to lift the push rod 2, such as magnetic adsorption, mechanical arm lifting, etc., but using the magnetic adsorption mode to lift the push rod 2 is not suitable for processing the optical fiber 6 with magnetism, and the magnetic adsorption mode is easy to lose magnetism due to magnetic field interference, so that the optical fiber clamping and fixing device cannot work normally. If the mechanical arm mode is used to control the up and down movement of the push rod 2, the volume of the device is too large, and the process is complex, which is not conducive to the miniaturization of the equipment and cost control. Therefore, using the spring 3 as the mode of lifting the push rod 2 overcomes the above problems, and the spring 3 has high adaptability, small volume and low cost.

[0062] The present application drives the pressing plate 4 by applying pressure to the push rod 2, so that the pressing plate 4 abuts against the fiber chuck shell 1, thereby achieving the purpose of stably clamping the optical fiber 6. The spring 3 can play a buffering role when pressure is applied to the push rod 2, and can lift the push rod 2 when the pressure on the push rod 2 is removed and the pressing plate 4 abuts against the fiber chuck shell 1. The mechanical method is used to clamp and fix the optical fiber 6, which overcomes the problems of large volume, complex structure and unstable clamping of the existing vacuum adsorption type and magnetic adsorption type pressing plate 4 type clamping and fixing device.

[0063] The optical fiber clamping and fixing device provided by the present application meets the requirements of optical device product research and development and production process, has a simple and reliable structure, is convenient to operate, does not damage the optical fiber 6, and does not affect the subsequent process.

[0064] In order to more completely illustrate the scheme of the embodiments of the present application, the details of the structures will be described in detail below.

[0065] In order to enable the pressing plate 4 to more stably clamp the optical fiber 6, the outer side surface of the optical fiber clamp shell 1 is provided with a first accommodating groove 11, and there is a gap between the pressing plate 4 and the optical fiber clamp body. Specifically, as follows:

[0066] When the vertical surface of the pressing plate 4 is parallel to the vertical surface of the optical fiber clamp shell 1, there is a gap between the inner side of the clamping part 40 and the optical fiber clamp shell 1. Specifically, the gap is between 1mm and 2mm. If the vertical surface of the pressing plate 4 is completely attached to the surface of the optical fiber clamp shell 1 when it is parallel to the surface of the optical fiber clamp shell 1, the pressing plate 4 and the first accommodating groove 11 cannot stably fix the optical fiber 6 in the first accommodating groove 11 after the optical fiber 6 is placed in the first accommodating groove 11. When there is a gap between the inner side of the clamping part 40 of the pressing plate 4 and the optical fiber clamp shell 1, the top end of the clamping part 40 abuts against the optical fiber clamp shell 1, and the vertical surface thereof forms a certain angle with the surface of the optical fiber clamp shell 1, thereby more stably fixing the optical fiber 6 in the first accommodating groove 11.

[0067] The side wall of the optical fiber clamp shell 1 near the lower end is provided with a first accommodating groove 11, the first accommodating groove 11 accommodates the optical fiber 6, and the shape of the first accommodating groove 11 is one of V-shaped, square or semicircular. In a preferred scheme, the shape of the first accommodating groove 11 is a V-shaped groove, the included angle formed by the two sides of the V-shaped groove is 45°, and the two V-shaped surfaces are formed by slow wire cutting, so that the surface has high smoothness and serves as a bare fiber limiting surface.

[0068] When the shape of the first accommodating groove 11 is V-shaped, the vertical surface of the clamping part 40 abuts against the optical fiber clamp shell 1, as shown in Figure 5 The angle bisector of the included angle of the two sides of the V-shaped groove is perpendicular to the vertical surface of the clamping part 40. When the angle bisector of the included angle of the two sides of the V-shaped groove is perpendicular to the vertical surface of the clamping part 40, the force exerted by the pressing plate 4 on the optical fiber 6 reaches the maximum, thereby further stably fixing the optical fiber 6 in the first accommodating groove 11.

[0069] In order to more conveniently push the push rod 2, the optical fiber clamping and fixing device further comprises a lower pressing head 5, and the lower pressing head 5 is fixedly connected with the upper end of the push rod 2. Specifically, the push rod 2 and the lower pressing head 5 are fixedly connected in one of welding, gluing or threaded connection.

[0070] When the push rod 2 and the lower pressing head 5 are connected in threaded connection, as shown in Figure 6 The lower pressing head 5 is provided with a second through hole 51 extending from the upper surface thereof to the lower surface thereof, and the inside of the second through hole 51 is provided with an internal thread; referring to Figure 4As shown, the end of the push rod 2 connected with the lower head 5 is provided with an external thread 21, and the internal thread and the external thread 21 are connected correspondingly. Specifically, the fixed connection is achieved in a threaded manner, facilitating the disassembly and installation between the push rod 2 and the lower head 5. Meanwhile, the design of the lower head 5 also provides convenience for the installation of the spring 3.

[0071] According to the arrangement of the lower head 5, the lower head 5 drives the push rod 2 to slide up and down in the fiber chuck shell 1. The fiber chuck shell 1 is provided with a third through hole 14 extending from the top to the bottom of the fiber chuck shell 1, and the push rod 2 is in sliding connection with the third through hole 14.

[0072] In order to facilitate the upward lifting of the push rod 2, the device is provided with a spring 3. As shown in Figure 6 and Figure 7 As shown, the spring 3 is a small-diameter coil spring, which is arranged around the push rod 2 or abuts against the lower end of the push rod 2.

[0073] When the spring 3 is arranged around the push rod 2, the push rod 2 is inserted into the hollow part of the spring 3. The fiber chuck shell 1 is provided with a first circular groove 12 extending from the upper surface to the inside of the fiber chuck shell 1, the first circular groove 12 contains the spring 3, one end of the spring 3 abuts against the bottom of the first circular groove 12. The lower head 5 is provided with a second circular groove 50 extending from the lower surface to the inside of the lower head 5, the second circular groove 50 contains the spring 3, the other end of the spring 3 abuts against the bottom of the second circular groove 50.

[0074] Specifically, the diameters of the first circular groove 12 and the second circular groove 50 are larger than the diameters of the second through hole 51 and the third through hole 14. Therefore, taking the second through hole 51 and the second circular groove 50 as an example, the second through hole 51 extends from the upper surface to the lower surface of the lower head 5, and the second circular groove 50 extends from the lower surface to the inside of the lower head 5. Therefore, the second through hole 51 actually extends from the upper surface of the lower head 5 to the bottom of the second circular groove 50. Since the diameter of the second through hole 51 is smaller than the diameter of the second circular groove 50, a platform is formed at the junction of the two, and the upper end of the spring 3 abuts against the platform. The third through hole 14 and the first circular groove 12 are the same, the diameter of the third through hole 14 is smaller than the diameter of the first circular groove 12, and a platform is formed at the junction of the two, and the lower end of the spring 3 abuts against the platform.

[0075] In actual application scenarios, the materials of the fiber chuck shell 1, the lower head 5, the push rod 2, and the pressing plate 4 can be one of brass, stainless steel, aluminum alloy, or plastic. Through research and in combination with the use scenarios, the preferred material of the pressing plate 4 is brass, and the reasons are as follows:

[0076] 1. The use of aluminum alloys has the following defects: compared with other metal materials, the strength of aluminum alloys is relatively low, which may not provide sufficient clamping force, leading to the loosening or failure of optical fibers; aluminum alloys are prone to form an oxide layer in the presence of oxygen, which may affect the surface quality of the clamping device and the stability of the optical fiber connection; aluminum alloys may be sensitive to certain chemicals or humidity, leading to corrosion or deterioration, thereby affecting the performance of the optical fiber clamping device.

[0077] 2. The use of stainless steel has the following defects: stainless steel is relatively hard, which may exert excessive pressure on optical fibers, leading to damage or breakage of optical fibers; stainless steel has high thermal conductivity, which may cause optical fibers to be heated in high-temperature environments, affecting their transmission performance; stainless steel material is heavier, which may increase the burden of installation and carrying.

[0078] 3. The use of plastic has the following defects: compared with metal materials, the strength of plastic is generally lower, and the optical fiber clamping device needs sufficient strength to maintain the stability and safety of the optical fiber; if plastic clamping parts are used, they may not provide sufficient force to firmly clamp the optical fiber, leading to clamping failure or optical fiber breakage; the coefficient of thermal expansion of plastic is generally higher, which means that when the temperature changes, the plastic clamping part may cause changes in clamping force due to expansion or contraction, which may cause the position of the optical fiber to shift or loosen, affecting the quality and stability of optical fiber transmission; plastic is generally more susceptible to wear and tear than metal materials, and the optical fiber clamping device is in a use environment that may be affected by physical friction or other damage, and the plastic clamping part is prone to wear, which may cause the clamping force to weaken or fail, thereby affecting the connectivity and transmission quality of the optical fiber 6; certain environments contain chemicals or humidity, which may have a corrosive effect on the plastic clamping part. Plastic may become brittle or undergo chemical changes, leading to a decline in the performance of the clamping device and possibly causing damage or breakage of the optical fiber 6; the shape stability of plastic is generally poor and is easily affected by external factors to change shape, which will particularly cause the shape of the plastic clamping part to change, making the position of the optical fiber unstable, thereby affecting the accuracy and stability of optical fiber transmission.

[0079] Therefore, in summary, using brass as the material for the fiber holder housing 1, the pressing head 5, the push rod 2, and the pressing plate 4 has the following advantages: brass has good mechanical properties, with moderate hardness and strength, which can provide stable clamping force, and it can provide sufficient clamping force without losing elasticity and deformation, ensuring the stable fixation of the optical fiber 6; brass has good heat conduction performance, which can effectively dissipate heat, which is very important for applications that need to handle high-power optical fibers 6 or work in high-temperature environments, and can prevent problems caused by heating of the optical fiber 6; brass has certain corrosion resistance and can maintain stable performance in most common environmental conditions, and it has good resistance to corrosion of general atmospheric environment, humidity, and some chemicals; brass is easy to process and manufacture, and can be processed by common processing methods such as milling, cutting, and drilling, which makes brass one of the commonly used materials for manufacturing optical fiber clamping devices.

[0080] In general, brass has moderate hardness, strength, and heat conduction performance in optical fiber clamping devices, as well as good corrosion resistance, and is easy to process. These characteristics make brass a reliable choice that can provide stable clamping force and maintain stable performance in various application environments.

[0081] In summary, as shown in Figure 8 and Figure 9 , the use method of the optical fiber clamping and fixing device provided by the embodiment of the present application is as follows:

[0082] When clamping the optical fiber 6, a downward pressure is applied to the push rod 2, which moves downward under the action of the downward pressure, driving the pressing plate 4 to rotate clockwise around the pin shaft 10, and the spring 3 is compressed, and the lower end of the clamping portion 40 of the pressing plate 4 is separated from the surface of the optical fiber holder housing 1.

[0083] Place the optical fiber 6 in the reserved position of the optical fiber holder housing 1, and remove the downward pressure applied to the push rod 2, which moves upward under the upward force of the spring 3, thereby driving the pressing plate 4 to rotate counterclockwise, and the clamping portion 40 of the pressing plate 4 abuts against the surface of the optical fiber holder housing 1, pressing the optical fiber 6 and clamping and fixing the optical fiber 6 on the device. The reserved position is the first accommodating groove 11.

[0084] Embodiment 2:

[0085] The embodiment 2 of the present application provides the use scenario of the optical fiber clamping and fixing device in the embodiment 1, and the optical fiber clamping device can be used in the following optical fiber adsorption and fixing device.

[0086] An optical fiber adsorption and fixing device, as shown in Figure 10As shown, it comprises: a fiber rotation mechanism 7, a clamping arm assembly 8 and a vacuum suction unit 9.

[0087] The vacuum suction unit 9 is arranged on the clamping arm assembly 8, and the vacuum suction unit 9 comprises a vacuum-tight cavity 90 located in the clamping arm assembly 8, which is fixedly connected with the fiber rotation mechanism 7. Specifically, the bottom of the fiber rotation mechanism 7 is provided with a bottom plate 74, a fixed support 73 of the fiber rotation mechanism 7 is fixed on one side of the upper surface of the bottom plate 74, and the clamping arm assembly 8 is fixed on the other side of the upper surface of the bottom plate 74. The vacuum suction unit 9 is used to fix the middle segment of the optical fiber 6.

[0088] The fiber rotation mechanism 7 comprises a rotating knob 70, a fixed block 71 and a fiber pressing block 72. The rotating knob 70 is located at the tail of the fiber rotation mechanism 7, the fiber pressing block 72 is arranged on the fixed block 71 and used to fix the optical fiber 6, and the rotating knob 70 is fixedly connected with the fixed block 71, and the rotating knob 70 drives the fixed block 71 to rotate.

[0089] Specifically, the rotating knob 70 is provided with a pattern knurling treatment, and rotating the rotating knob 70 can drive the fixed block 71 to rotate, so as to realize the adjustment of the angle of the optical fiber 6. The rotating knob 70 and the fixed block 71 are fixedly connected in one of the following ways: welding, gluing or threaded connection. The fiber rotation mechanism 7 is used to fix the rear segment of the optical fiber 6.

[0090] Specifically, the material of the fiber pressing block 72 can be one of metal or plastic. In a preferred embodiment, the fiber pressing block 72 is made of plastic, and the reasons are as follows:

[0091] 1. Lightweight: Plastic materials are lighter than metal materials, so using plastic to make the fiber pressing block 72 can reduce the weight of the entire device, and can reduce the load on the structure for the suspension and installation of the optical fiber clamping and fixing device.

[0092] 2. Non-conductive: Plastic is an insulating material, and in the application of optical fiber 6, it is very important to avoid electromagnetic interference or conductive contact. Using plastic to make the fiber pressing block 72 can provide good electrical insulation performance, ensuring stable transmission of the optical fiber 6 and signal integrity.

[0093] 3. Reduce mechanical stress: Plastic has good elasticity and buffering performance. Compared with hard materials such as metal, the plastic fiber pressing block 72 can provide better buffering effect during clamping, reduce the mechanical stress on the optical fiber 6, help to protect the optical fiber 6 from external damage, and improve the service life of the optical fiber 6.

[0094] 4. Corrosion resistance: Some plastic materials have strong corrosion resistance, which can prevent the fiber pressing block 72 from corroding in a humid environment or chemical medium. For the use of the optical fiber clamping and fixing device in harsh environments, it is necessary to consider the corrosion resistance of the plastic material used to make the fiber pressing block 72, which can increase the durability and reliability of the device.

[0095] Secondly, the contact surface of the fiber pressing block 72 with the optical fiber 6 can be a flat surface or an arc surface. In the preferred embodiment, the contact surface is an arc surface, and the reasons are as follows:

[0096] 1. Dispersing pressure: The arc-shaped fiber pressing block 72 can provide more uniform pressure distribution. Compared with the flat or right-angled fiber pressing block 72, the arc-shaped fiber pressing block 72 can better fit the surface of the optical fiber 6 and uniformly disperse the pressure, thereby reducing the point pressure and local stress concentration on the optical fiber 6, and reducing the risk of stress damage and breakage of the optical fiber 6.

[0097] 2. Enhancing stability: The arc-shaped fiber pressing block 72 can provide a larger contact area and contact more closely with the surface of the optical fiber 6, which helps to enhance the clamping force and increase the friction between the optical fiber 6 and the fiber pressing block 72. This increased stability can effectively prevent the displacement or sliding of the optical fiber 6, ensuring the fixation and stable transmission of the optical fiber 6.

[0098] 3. Buffering effect: The arc-shaped fiber pressing block 72 can provide a certain degree of buffering effect during clamping. When external vibration or impact acts on the optical fiber clamping and fixing device, the arc-shaped fiber pressing block 72 can absorb part of the energy and reduce the impact on the optical fiber 6, which helps to protect the optical fiber 6 from mechanical stress and damage, and improves the reliability and service life of the optical fiber 6.

[0099] 4. Reducing damage risk: Since the arc-shaped fiber pressing block 72 contacts the optical fiber 6 more evenly without sharp edges or cutting parts, the potential damage risk to the optical fiber 6 during clamping is reduced. This is very important for maintaining the integrity and performance of the optical fiber 6, especially for high-speed data transmission or optical fiber 6 sensing applications.

[0100] The optical fiber rotating mechanism 7 of the embodiment 1 of the present application can adjust the angle of the optical fiber 6 by 360°, improving the flexibility of the device. The vacuum adsorption unit 9 can fix the optical fiber 6 in an adsorbed manner, effectively avoiding deformation and damage of the optical fiber 6. The device provided by the present application has a simple structure and a small size, effectively overcoming the problems of complex structure and large size of the existing optical fiber clamping and fixing device.

[0101] In order to more completely set forth the scheme of the embodiment of the present application, the details of the structure will be described in detail below.

[0102] In order to more stably fix the optical fiber 6 and prevent the optical fiber 6 from falling off during processing, the optical fiber suction fixing device further comprises an optical fiber clamping fixing device, the vacuum suction unit 9 is arranged between the optical fiber rotating mechanism 7 and the optical fiber clamping fixing device, and the optical fiber rotating mechanism 7, the vacuum suction unit 9 and the optical fiber clamping fixing device cooperatively fix the optical fiber 6. Figure 11 As shown in the figure, the clamping arm assembly 8 is provided with a clamping groove 80, and the optical fiber clamping fixing device is clamped in the clamping groove 80 and fixedly connected with the clamping arm assembly 8. Specifically, the optical fiber clamping fixing device comprises an optical fiber chuck shell 1, a push rod 2 and a pressing plate 4, and a second accommodating groove 710 (see Figure 14 ) is arranged on the outer side of the optical fiber chuck shell 1 and corresponds to the pressing plate 4, used for accommodating the optical fiber 6, and the optical fiber clamping fixing device is used for fixing the front section of the optical fiber 6.

[0103] In actual use scenarios, the optical fiber clamping fixing device needs to move the push rod 2 downward, so that the lower end of the optical fiber clamping fixing device is opened to clamp the optical fiber 6. Therefore, as shown in the figure, the clamping arm assembly 8 is provided with a pressing plate 81 and a plate seat 82, the length of the pressing plate 81 is greater than the length of the plate seat 82, and the pressing plate 81 is arranged above the push rod 2; the pressing plate 81 is provided with a first magnet 810, and the plate seat 82 is provided with a second magnet 820, when the first magnet 810 and the second magnet 820 are attracted to each other, the pressing plate 81 applies pressure to the push rod 2. Specifically, as shown in the figure, the first magnet 810 and the second magnet 820 are opposite in polarity, and rely on the adsorption force to realize the downward pressing of the push rod 2, so as to realize the downward movement of the push rod 2 and drive the opening of the pressing plate 4. When the pressing plate 4 is opened, the optical fiber 6 is released, and the optical fiber 6 is prepared for clamping again. The adsorption force of the two magnets is not large, if it is needed to release the pressure of the pressing plate 81 on the lower pressing head 5, only need to turn the pressing plate 81 clockwise, so that the pressing plate 81 is lifted upward, which can overcome the adsorption force of the two magnets and release the pressure of the pressing plate 81 on the lower pressing head 5. Figure 11 Figure 12

[0104] In the preferred embodiment, the first magnet 810 on the pressing plate 81 can be an electromagnet, which has magnetism when electrified, the first magnet 810 is attracted to the second magnet 820, the pressing plate 81 is pressed downward, loses magnetism when de-energized, the first magnet 810 and the second magnet 820 are separated, and the pressing plate 81 is lifted up.

[0105] In order to ensure that the rear section of the optical fiber 6 is clamped more stably, and after the optical fiber rotating mechanism 7 adjusts the angle of the optical fiber 6, the optical fiber rotating mechanism 7 can be stable and immovable, the following structure is further added to the optical fiber rotating mechanism 7. ​​

[0106] As Figure 13 shown, the optical fiber rotating mechanism 7 further comprises a fixed support 73 sleeved on the fixed block 71, and a first locking screw 730 is arranged on the fixed support 73 to lock the fixed block 71. In actual use, after the angle of the fixed block 71 is adjusted by rotating the knob 70, the first locking screw 730 is tightened to fix the angle of the fixed block 71.

[0107] A second accommodating groove 710 is arranged on the surface of the fixed block 71 to accommodate the optical fiber 6. Specifically, the second accommodating groove 710 can be V-shaped, semicircular, square, etc., and in the preferred embodiment, the second accommodating groove 710 is a V-shaped groove with an included angle of 45°, and the two V-shaped surfaces are formed by slow wire cutting, with high surface finish, serving as a limiting surface for the bare fiber of the optical fiber.

[0108] A second locking screw 720 is arranged on the fiber pressing block 72 to cooperate with the fiber pressing block 72 to fix the optical fiber 6 on the fixed block 71. Specifically, the second locking screw 720 is connected with the fixed block 71 in one of the threaded connection or magnetic attraction. Figure 14 and Figure 15 As shown in the figures, when the second locking screw 720 is connected with the fixed block 71 in the magnetic attraction mode, the second locking screw 720 is made of martensitic steel, and a cylindrical magnet 711 is arranged below the second locking screw 720 at the corresponding position of the fixed block 71. Specifically, the corresponding position is one side of the second accommodating groove 710. The martensitic steel adopted by the second locking screw 720 is a kind of steel material treated by quenching and tempering process, which is usually magnetic. Therefore, the second locking screw 720 can be attracted to the cylindrical magnet 711 to fix the fiber pressing block 72 on the fixed block 71.

[0109] In order to better fix the middle section of the optical fiber 6, a vacuum suction unit 9 is arranged in the device.

[0110] As Figure 16 shown, the vacuum suction unit 9 comprises a connector 91 and an optical fiber suction nozzle 92, and a vacuum sealed cavity 90 is arranged between the connector 91 and the optical fiber suction nozzle 92. The connector 91 is arranged at the top of the vacuum suction unit 9, and a vacuum generating assembly is connected with the connector 91. The optical fiber suction nozzle 92 is arranged below the vacuum suction unit 9, and the lower end of the optical fiber suction nozzle 92 suctions the optical fiber 6. Specifically, the connector 91 is a reversible quick connector 91.

[0111] In actual application scenarios, the external vacuum generating assembly is a vacuum generator or a vacuum pump device, which can generate negative pressure to form a vacuum condition; the joint 91 is used for connecting the vacuum generating assembly and the vacuum sealed cavity 90; the upper part of the vacuum sealed cavity 90 is the joint 91, and the lower part is connected with the optical fiber suction nozzle 92; the upper end of the optical fiber suction nozzle 92 is connected with the vacuum sealed cavity 90 through a sealing thread, and the lower end is a suction nozzle with a specific semicircular notch shape, which can be closely attached to the optical fiber bare fiber without gap, and the suction nozzle notch has stable negative pressure, so that the middle section of the optical fiber 6 is adsorbed.

[0112] In summary, the use method of the optical fiber adsorption and fixing device provided in Embodiment 2 of the present application is as follows:

[0113] The optical fiber 6 is placed in the second accommodating groove 710 on the surface of the fixed block 71, the pressure fiber block 72 is used to be attracted to the cylindrical magnet 711 on the fixed block 71, the rear section of the optical fiber 6 is fixed in the second accommodating groove 710; the external vacuum generating assembly is started, the middle section of the optical fiber 6 is aligned with the optical fiber suction nozzle 92 of the optical fiber adsorption device, so that the middle section of the optical fiber 6 is fixed by the vacuum adsorption device; after the middle section and the rear section of the optical fiber 6 are fixed, the first magnet 810 on the pressing plate 81 is powered on, the first magnet 810 is attracted to the second magnet 820, the push rod 2 is pressed downward, the pressing plate 4 of the optical fiber clamping and fixing device is opened, the front section of the optical fiber 6 is placed in the second accommodating groove 710 of the optical fiber clamping and fixing device, the first magnet 810 is powered off, the first magnet 810 is separated from the second magnet 820, the push rod 2 slides upward, the pressing plate 4 abuts against the optical fiber clamping and fixing device, and the front section of the optical fiber 6 is fixed in the optical fiber clamping and fixing device, and the fixing operation of the optical fiber 6 is completed.

[0114] The rotating knob 70 of the optical fiber rotating mechanism 7 is rotated, the angle of the fixed block 71 is adjusted, the optical fiber 6 is driven, the angle of the optical fiber 6 is adjusted, after being rotated to a suitable angle, the first locking screw 730 is locked, the fixed block 71 is fixed, and the angle adjustment operation of the optical fiber 6 is completed.

[0115] The above only describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An optical fiber clamping and fixing device, characterized in that: include: Optical fiber chuck housing (1), push rod (2), spring (3) and pressure plate (4); The pressing plate (4) comprises a clamping portion (40) and a positioning portion (41), wherein the positioning portion (41) is close to the lower end of the optical fiber chuck housing (1), is inserted into the optical fiber chuck housing (1), and forms a rotating shaft structure with the pin shaft (10) on the optical fiber chuck housing (1); The positioning portion (41) is inserted into one end of the optical fiber chuck housing (1) and coupled with one end of the push rod (2) located inside the optical fiber chuck housing (1), so that the positioning portion (41) is pushed up and down by the push rod (2) to achieve a small angle rotation around the pin shaft (10); The spring (3) is located inside the optical fiber clamp housing (1) and is used to push up the push rod (2) so that after the push rod (2) defines the positioning portion (41), the clamping portion (40) is urged to clamp the optical fiber (6); A first accommodating groove (11) is provided on a side wall near the lower end of the optical fiber clamp housing (1); the first accommodating groove (11) accommodates the optical fiber (6); and the optical fiber (6) is fixed in the first accommodating groove (11) by a clamping portion (40).

2. The optical fiber clamping and fixing device according to claim 1, characterized in that: When the vertical surface of the pressing plate (4) is parallel to the vertical surface of the optical fiber clamp housing (1), a gap exists between the vertical surface inside the clamping portion (40) and the optical fiber clamp housing (1).

3. The optical fiber clamping and fixing device according to claim 2, characterized in that: The first receiving groove (11) is in a V-shaped, square or semicircular shape; When the first receiving groove (11) is V-shaped and the vertical surface of the clamping portion (40) abuts against the optical fiber clamp housing (1), the bisector of the angle between the two sides of the V-shaped groove is perpendicular to the vertical surface of the clamping portion (40).

4. The optical fiber clamping and fixing device according to claim 1, characterized in that: The spring (3) is a small-diameter coil spring (3), and the spring (3) is arranged in a manner of being arranged around the push rod (2) or abutting against the lower end of the push rod (2); When the spring (3) is arranged around the push rod (2), the push rod (2) is inserted into the hollow portion of the spring (3); The optical fiber chuck housing (1) is provided with a first circular groove (12) extending from its upper surface to the interior of the optical fiber chuck housing (1); the first circular groove (12) accommodates the spring (3); one end of the spring (3) abuts against the bottom of the first circular groove (12).

5. The optical fiber clamping and fixing device according to claim 4, characterized in that: The optical fiber clamping and fixing device further comprises a pressing head (5), wherein the pressing head (5) is fixedly connected to the upper end of the push rod (2); The lower pressure head (5) is provided with a second circular groove (50) extending from its lower surface to the interior of the lower pressure head (5), the second circular groove (50) accommodates the spring (3), and the other end of the spring (3) abuts against the bottom of the second circular groove (50).

6. The optical fiber clamping and fixing device according to claim 1, characterized in that: The positioning portion (41) is inserted into one end of the optical fiber chuck housing (1) and coupled with one end of the push rod (2) located inside the optical fiber chuck housing (1). Specifically, a small-diameter shaft section (20) is provided at the end of the push rod (2), and the positioning portion (41) of the pressure plate (4) is provided with a first groove (410), and the small-diameter shaft section (20) is clamped in the first groove (410).

7. The optical fiber clamping and fixing device according to claim 1, characterized in that: A second groove (13) is provided at the lower end of the optical fiber clamp housing (1), and the second groove (13) accommodates the positioning portion (41).

8. The optical fiber clamping and fixing device according to claim 7, characterized in that: The positioning portion (41) is provided with a first through hole (411), the first through hole (411) is provided between the clamping portion (40) and the first groove (410), the pin shaft (10) is inserted into the first through hole (411), and the two ends of the pin shaft (10) are connected to the side walls of the second groove (13).

9. The optical fiber clamping and fixing device according to any one of claims 1 to 8, characterized in that: An inclined surface (400) is provided on the inner side of the upper end of the clamping portion (40), and when the lower end of the clamping portion (40) is separated from the optical fiber clamp housing (1), the inclined surface (400) abuts against the surface of the optical fiber clamp housing (1).

10. A method for using the optical fiber clamping and fixing device according to any one of claims 1 to 9, characterized in that: The method of use includes: When clamping the optical fiber (6), downward pressure is applied to the push rod (2), and the push rod (2) moves downward under the action of the downward pressure, driving the pressure plate (4) to rotate clockwise around the pin shaft (10), the spring (3) is compressed, and the lower end of the clamping portion (40) of the pressure plate (4) is separated from the surface of the optical fiber clamp housing (1); The optical fiber (6) is placed in a reserved position of the optical fiber chuck housing (1), and the downward pressure applied to the push rod (2) is released. The push rod (2) moves upward under the upward force of the spring (3), thereby driving the pressure plate (4) to rotate counterclockwise. The clamping portion (40) of the pressure plate (4) abuts against the surface of the optical fiber chuck housing (1), squeezing the optical fiber (6) and clamping the optical fiber (6) to fix it on the device.

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