Floating optical fiber test probe with locking function

Abstract

The utility model discloses a floating optical fiber test probe with a locking function, which comprises a sleeve, a positioning sleeve, a spring, a tightening nut, a positioning nut, a locking nut and a test head, the sleeve is movably sleeved on the outer surface of the positioning sleeve, and the spring is positioned between the sleeve and the positioning sleeve. One axial end of the tightening nut is sleeved on the outer surface of one axial end of the positioning sleeve in a threaded manner, one axial end of the testing head is internally connected to the other axial end of the tightening nut in a threaded manner, the positioning nut is sleeved on the outer surface of the other axial end of the positioning sleeve in a threaded manner, and the locking nut is elastically clamped in an inner hole in the other axial end of the positioning sleeve. The positioning sleeve is arranged in the sleeve in a floating manner, the floating included angle between the axis of the positioning sleeve and the axis of the sleeve is 6-20 degrees, and the distance can be adjusted and set up and down by the positioning sleeve according to the elasticity of the spring, so that a space is reserved for adjusting the installation direction in the installation process, an optical fiber connector is not damaged in the installation process, and the installation is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical fiber connectors, and in particular relates to a floating optical fiber test probe with a locking function. Background Art

[0002] Fiber optic connectors are devices that are detachable and connect optical fibers. They precisely connect the two end faces of optical fibers so that the light energy output by the transmitting optical fiber can be coupled to the receiving optical fiber to the maximum extent possible, and the impact on the system caused by its involvement in the optical link is minimized. This is the basic requirement of fiber optic connectors. Fiber optic connectors are widely used in optical fiber transmission lines, optical fiber distribution frames, and optical fiber test instruments and meters. To a certain extent, fiber optic connectors also affect the reliability and performance of optical transmission systems.

[0003] In the prior art, the structure of the optical fiber connector is relatively complex, and the optical fiber connector is fixed during installation and its position cannot be adjusted, which places very strict requirements on its installation. Therefore, a floating optical fiber test probe with a locking function is urgently needed. Utility Model Content

[0004] In order to solve the defects in the prior art, the utility model provides a floating optical fiber test probe with a locking function.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model provides a floating optical fiber test probe with a locking function, comprising a sleeve, a positioning sleeve, a spring, a tightening nut, a positioning nut, a locking nut and a test head, wherein the sleeve is movably sleeved on the outer surface of the positioning sleeve, the spring is sleeved on the outer surface of the positioning sleeve and is located between the sleeve and the positioning sleeve, an axial end of the tightening nut is threadedly sleeved on the axial outer surface of one axial end of the positioning sleeve, an axial end of the test head is threadedly inscribed in the other axial end of the tightening nut, the positioning nut is threadedly sleeved on the axial outer surface of the other axial end of the positioning sleeve, and the locking nut is elastically clamped in the inner hole of the other axial end of the positioning sleeve.

[0007] Preferably, the positioning sleeve comprises a positioning sleeve body, and a first positioning portion, a second positioning portion and a third positioning portion which are integrally arranged on the outer surface of the positioning sleeve body; the axis of the positioning sleeve body is provided with an axial through hole for the optical fiber to pass through; an axial end face of the sleeve is movably contacted with an axial end face of the first positioning portion adjacent to the second positioning portion; the spring (3) is sleeved on the outer surface of the positioning sleeve and is located between the second positioning portion and the third positioning portion.

[0008] Preferably, the first positioning portion, the second positioning portion and the third positioning portion are circular boss structures.

[0009] Preferably, at least one group of planar portions is provided on the outer surface of the first positioning portion, and each group of planar portions is symmetrically arranged relative to the axis of the positioning sleeve.

[0010] Preferably, the axial end surfaces of the second positioning portion and the third positioning portion relative to each other are conical surface structures.

[0011] Preferably, a mounting boss is provided on the outer surface of the sleeve, and a mounting hole is provided on the mounting boss.

[0012] Preferably, the axis of the sleeve is provided with a first sleeve shaft cavity and a second sleeve shaft cavity which are connected to each other, the inner wall of the first sleeve shaft cavity matches the circumferential surface of the second positioning portion, the inner diameter of the first sleeve shaft cavity is smaller than the inner diameter of the second sleeve shaft cavity, the ratio of the sleeve length to the inner diameter of the second sleeve shaft cavity is 2-6, the ratio of the outer diameter of the positioning sleeve to the inner diameter of the sleeve is 0.4-0.6, and the floating angle between the axis of the positioning sleeve and the axis of the sleeve is 6-20°.

[0013] Preferably, at least two slots are formed on the locking nut along its circumferential direction, and the slots are arranged from one axial end surface of the locking nut to the other axial end thereof.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The spring described in the utility model is located in the gap between the inner surface of the sleeve and the outer surface of the positioning sleeve, so that the positioning sleeve is floatingly set in the sleeve, and the floating angle between the axis of the positioning sleeve and the axis of the sleeve is 6-20°. The positioning sleeve can also be adjusted up and down according to the elasticity of the spring. The setting distance ensures that there is space to adjust the installation orientation during the installation process, ensures that the optical fiber connector is not damaged during the installation process, and facilitates installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an axial cross-sectional view of a floating optical fiber test probe with a locking function according to the utility model;

[0017] Figure 2 This is a structural schematic diagram of a positioning sleeve in a floating optical fiber test probe with a locking function of the utility model;

[0018] Figure 3 The utility model discloses an axial cross-sectional view of a sleeve in a floating optical fiber test probe with a locking function. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0020] In the description of the present invention, it should be understood that the terms "left" and "right" indicate directions or positional relationships based on the drawings in the specification. Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] like Figures 1 to 3 As shown, this embodiment provides a floating optical fiber test probe with a locking function, including a sleeve 1, a positioning sleeve 2, a spring 3, a tightening nut 4, a positioning nut 5, a locking nut 6 and a test head 7. The positioning sleeve 2 includes a positioning sleeve body, and a first positioning portion 21, a second positioning portion 22 and a third positioning portion 23 integrally arranged on the outer surface of the positioning sleeve body, and the axis of the positioning sleeve body is provided with an axial through hole for the optical fiber to pass through. The first positioning portion 21, the second positioning portion 22 and the third positioning portion 23 are annular boss structures. Among them, a group of planar portions are provided on the outer surface of the first positioning portion 21, and the group of planar portions are symmetrically arranged relative to the axis of the positioning sleeve 2; the axial end faces of the second positioning portion 22 and the third positioning portion 23 relative to each other are conical surface structures. The ratio of the outer diameter of the positioning sleeve to the inner diameter of the sleeve is 0.4-0.6. In this embodiment, 0.4, 0.53 or 0.6 can be selected according to actual needs; the floating angle between the axis of the positioning sleeve 2 and the axis of the sleeve is 6-20°. In this embodiment, 6°, 15° or 20° can be selected according to time requirements.

[0023] Specifically, a mounting boss is provided on the outer surface of the sleeve 1, and a mounting hole is provided on the mounting boss. The axis of the sleeve is provided with a first sleeve shaft cavity and a second sleeve shaft cavity which are connected to each other. The inner wall of the first sleeve shaft cavity matches the circumferential surface of the second positioning portion. The inner diameter of the first sleeve shaft cavity is smaller than the inner diameter of the second sleeve shaft cavity. The ratio of the sleeve length to the inner diameter of the second sleeve shaft cavity is 2-6. In this embodiment, 2, 4 or 6 can be selected according to actual needs. The sleeve 1 is movably sleeved on the outer surface of the positioning sleeve 2, and its axial bottom end face is movably contacted with the axial top end face of the first positioning portion 21. The spring 3 is sleeved on the outer surface of the positioning sleeve 2 and is located between the second positioning portion 22 and the third positioning portion 23. The spring 3 is located in the gap between the inner surface of the sleeve 1 and the outer surface of the positioning sleeve 2. During installation, the positioning sleeve is inserted into the sleeve. After the sleeve is fixed, the positioning sleeve is moved downward to make the first sleeve axial cavity separate from the second positioning part. At this time, the positioning sleeve is floated in the sleeve (i.e., in the second sleeve axial cavity), and the floating angle between the axis center of the positioning sleeve and the axis center of the sleeve is 6-20°. The positioning sleeve can also be adjusted up and down according to the elasticity of the spring. The set distance ensures that there is space to adjust the installation position during the installation process, ensures that the optical fiber connector is not damaged during the installation process, and facilitates installation.

[0024] Specifically, the axial lower end thread of the tightening nut 4 is sleeved on the outer surface of the axial upper end of the positioning sleeve 2, and the axial lower end thread of the test head 7 is internally connected to the axial upper end of the tightening nut 4. The test head is installed on the axial upper end of the positioning sleeve through the tightening nut to connect the optical fiber to the test equipment.

[0025] Specifically, the positioning nut 5 is threadedly sleeved on the outer surface of the axial lower end of the positioning sleeve 2, and the locking nut 6 is elastically clamped in the inner hole of the axial lower end of the positioning sleeve 2. The locking nut 6 is provided with four slots along its circumferential direction, and the slots are arranged from the axial end surface of the locking nut to the axial other end thereof. The locking nut is provided with slots to give it a certain radial elasticity, and after the optical fiber is clamped in the positioning sleeve, the optical fiber is locked by elastic fine adjustment.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A floating optical fiber test probe with a locking function, characterized in that: The invention comprises a sleeve (1), a positioning sleeve (2), a spring (3), a tightening nut (4), a positioning nut (5), a locking nut (6) and a test head (7), wherein the sleeve (1) is movably sleeved on the outer surface of the positioning sleeve (2), the spring (3) is sleeved on the outer surface of the positioning sleeve (2) and is located between the sleeve (1) and the positioning sleeve (2), one axial end of the tightening nut (4) is threadedly sleeved on the outer surface of one axial end of the positioning sleeve (2), one axial end of the test head (7) is threadedly inscribed in the other axial end of the tightening nut (4), the positioning nut (5) is threadedly sleeved on the outer surface of the other axial end of the positioning sleeve (2), and the locking nut (6) is elastically clamped in the inner hole of the other axial end of the positioning sleeve (2).

2. The floating optical fiber test probe with locking function according to claim 1, characterized in that: The positioning sleeve (2) comprises a positioning sleeve body, and a first positioning portion (21), a second positioning portion (22) and a third positioning portion (23) which are integrally arranged on the outer surface of the positioning sleeve body; the axis of the positioning sleeve body is provided with an axial through hole for the optical fiber to pass through; an axial end face of the sleeve (1) is movably contacted with an axial end face of the first positioning portion (21) adjacent to the second positioning portion; and the spring (3) is sleeved on the outer surface of the positioning sleeve (2) and is located between the second positioning portion (22) and the third positioning portion (23).

3. The floating optical fiber test probe with locking function according to claim 2, characterized in that: The first positioning portion (21), the second positioning portion (22) and the third positioning portion (23) are circular boss structures.

4. The floating optical fiber test probe with locking function according to claim 3, characterized in that: At least one group of planar portions is provided on the outer surface of the first positioning portion (21), and each group of planar portions is symmetrically arranged relative to the axis of the positioning sleeve (2).

5. The floating optical fiber test probe with locking function according to claim 3, characterized in that: The axial end surfaces opposite to each other of the second positioning portion (22) and the third positioning portion (23) are conical surface structures.

6. The floating optical fiber test probe with locking function according to claim 1, characterized in that: A mounting boss is provided on the outer surface of the sleeve (1), and a mounting hole is provided on the mounting boss.

7. The floating optical fiber test probe with locking function according to claim 1, characterized in that: The axis of the sleeve (1) is provided with a first sleeve shaft cavity (11) and a second sleeve shaft cavity (12) which are connected to each other. The inner wall of the first sleeve shaft cavity (11) matches the circumferential surface of the second positioning portion (22). The inner diameter of the first sleeve shaft cavity (11) is smaller than the inner diameter of the second sleeve shaft cavity (12). The ratio of the sleeve length to the inner diameter of the second sleeve shaft cavity is 2-6. The ratio of the outer diameter of the positioning sleeve to the inner diameter of the sleeve is 0.4-0.

6. The floating angle between the axis of the positioning sleeve (2) and the axis of the sleeve is 6-20°.

8. The floating optical fiber test probe with locking function according to claim 1, characterized in that: The locking nut (6) is provided with at least two slots along its circumferential direction, and the slots are arranged from one axial end surface of the locking nut to the other axial end thereof.

Images