Multi-dimensional optical fiber coupling head

Abstract

The utility model relates to a multi-dimensional optical fiber coupling head which comprises a main shell. Optical fiber connectors; the lens installation mechanism comprises a lens installation block, a lens and a compression spring, the main shell is provided with a lens installation groove for the lens installation block to be movably arranged, and the two ends of the compression spring are connected with the optical fiber connector and the lens installation block respectively; the focal length adjusting mechanism comprises a front fixing plate, the front fixing plate is arranged on the face, away from the optical fiber connector, of the main shell and shields a notch of the lens mounting groove, a plurality of first containing grooves are evenly and annularly formed in the face, provided with the optical fiber connector, of the main shell and the front fixing plate, and fixing pins are clamped in the first containing grooves; every two fixing pins corresponding in position are connected through a tension spring, the face, provided with the optical fiber connector, of the main shell is in threaded fit with a plurality of focal length adjusting screws, and the lens mounting block abuts against the front fixing plate through a compression spring. And the optical axis adjusting mechanism comprises two optical axis adjusting screws which are perpendicular to each other, and the optical axis adjusting screws abut against the lens mounting block.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber couplers, in particular to a multi-dimensional optical fiber coupling head. Background Art

[0002] An existing fiber optic coupler adjusts the focal length, pitch and yaw of the lens through a focal length adjustment screw, and adjusts the optical axis position of the lens through an optical axis adjustment screw. This fiber optic coupler is movably provided with a lens mounting block and a fixing plate abutting the lens mounting block. Furthermore, it includes an abutment mechanism for driving the lens mounting block to abut the fixing plate and a reset mechanism for resetting the lens mounting block after relative sliding occurs between the lens mounting block and the fixing plate. Too many mechanisms connected to the lens mounting block easily cause interference between the mechanisms.

[0003] Therefore, there is an urgent need to propose a multi-dimensional fiber coupling head including a mechanism that can simultaneously achieve abutment and resetting functions. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a multi-dimensional optical fiber coupling head.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A multi-dimensional optical fiber coupling head, comprising:

[0007] Main shell;

[0008] An optical fiber connector, the optical fiber connector being arranged on any one side of the main shell;

[0009] A lens mounting mechanism, the lens mounting mechanism comprising a lens mounting block, a lens and a compression spring, the lens mounting block being movably arranged at one end of the main shell away from the optical fiber connector, the main shell being provided with a lens mounting groove for movably setting the lens mounting block, the lens being arranged in the lens mounting block, and the two ends of the compression spring being respectively connected to the optical fiber connector and the lens mounting block;

[0010] A focus adjustment mechanism, wherein the focus adjustment mechanism comprises a front fixing plate, the lens mounting groove is connected to a side of the main shell away from the optical fiber connector, the front fixing plate is arranged on a side of the main shell away from the optical fiber connector and covers the notch of the lens mounting groove, a side of the main shell provided with the optical fiber connector is evenly provided with a plurality of first accommodating grooves, a side of the front fixing plate away from the optical fiber connector is provided with the first accommodating grooves with the same structure corresponding to the positions of the plurality of first accommodating grooves on the main shell, fixing pins are clamped in the first accommodating grooves on the main shell and the front fixing plate, the fixing pins corresponding to every two positions are respectively connected by tension springs, a side of the main shell provided with the optical fiber connector is evenly provided with a plurality of first threaded holes connected to a side of the main shell away from the optical fiber connector, the inner thread of the first threaded hole is matched with a focus adjustment screw, an end of the focus adjustment screw close to the front fixing plate abuts against the front fixing plate, and the lens mounting block abuts against the front fixing plate through the compression spring;

[0011] An optical axis adjustment mechanism, the optical axis adjustment mechanism includes two optical axis adjustment screws arranged perpendicular to each other, the axes of the two optical axis adjustment screws are parallel to the front fixing plate, the side of the main shell is provided with a second threaded hole threadedly matched with the optical axis adjustment screw, the second threaded hole is connected to the lens mounting groove, and the optical axis adjustment screw abuts the lens mounting block.

[0012] As a further improvement: the main shell is provided with a fiber installation groove for accommodating the fiber optic connector, and the fiber optic connector is sleeved with a first sealing ring respectively abutting against the fiber optic connector and the fiber installation groove.

[0013] As a further improvement: it also includes a back plate, which abuts against and shields a side of the main shell where the optical fiber connector is provided, the back plate is connected to the main shell by a plurality of bolts, and a locking nut is provided at the end of the focal length adjustment screw away from the front fixing plate, and the locking nut is screwed and abutted against the back plate.

[0014] As a further improvement: one end of the main shell near the optical fiber connector is threadedly fitted with a sealing decorative cover, and the sealing decorative cover can cover the back plate and the side of the main shell near the optical fiber connector, and a second sealing ring is provided on the back plate, and when the sealing decorative cover is screwed on the main shell, the second sealing ring abuts against the sealing decorative cover.

[0015] As a further improvement: the optical axis adjustment mechanism also includes a locking screw, the axis of the locking screw is coplanar with the axes of the two optical axis adjustment screws, the angles between the axis of the locking screw and the axes of the two optical axis adjustment screws are both 135°, and the side of the main shell is provided with a third threaded hole that is threadedly matched with the locking screw, and the third threaded hole is connected to the lens mounting slot.

[0016] As a further improvement: a reed abutting against the lens mounting block is provided in the lens mounting groove, the lens mounting groove is provided with a space for clamping the reed and allowing the reed to deform, the connecting line between the two ends of the reed is perpendicular to the axis of the locking screw, and the locking screw can be screwed and abut against the reed.

[0017] As a further improvement: one side of the main housing where the optical fiber connector is provided is provided with three fourth threaded holes respectively connected to the two second threaded holes and the third threaded hole, and the inner threads of the fourth threaded holes are matched with set screws.

[0018] As a further improvement: an abutment portion is provided at one end of the focal length adjustment screw close to the front fixing plate, and the abutment portion is hemispherical; abutment components are provided at positions of the front fixing plate corresponding to the abutment portions, and the abutment components include two second accommodating grooves that are adjacent to each other and are connected to a side of the front fixing plate close to the optical fiber connector; an abutment pin is provided in the second accommodating groove; the abutment portion abuts against two adjacent abutment pins; and two adjacent second accommodating grooves are connected to accommodate the abutment portion.

[0019] As a further improvement: a side of the front fixing plate away from the optical fiber connector is provided with a steel front sheet for covering the first accommodating groove, and a side of the steel front sheet away from the optical fiber connector is provided with a rubber front sheet for covering the steel front sheet.

[0020] As a further improvement: a mounting plate is fixedly connected to a surface of the main shell away from the optical fiber connector, and a plurality of mounting holes are provided on the mounting plate.

[0021] The utility model has the following beneficial effects:

[0022] 1. The optical fiber connector and the lens mounting block are connected by a compression spring, which simultaneously realizes the abutment of the lens mounting block and the reset of the lens mounting block after relative sliding occurs between the lens mounting block and the fixing plate, thereby reducing the complexity of the mechanism.

[0023] 2. When adjusting the optical axis adjustment screw, the compression spring is deformed to increase the damping when the optical axis adjustment screw is turned, thereby improving the working accuracy of the optical axis adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a schematic diagram of the overall structure of the utility model without a sealing decorative cover;

[0026] Figure 2 This is a cross-sectional view of the overall structure of the utility model with a sealing decorative cover;

[0027] Figure 3 It is a schematic diagram of the installation structure of the optical axis adjustment mechanism and the lens installation groove of the utility model;

[0028] Figure 4 It is a schematic diagram of the installation structure of the front fixing plate and the fixing pin of the utility model;

[0029] Figure 5 It is a schematic diagram of the installation structure of the front fixing plate and the abutment pin of the utility model.

[0030] Reference numerals:

[0031] 1-main shell; 2-optical fiber connector; 3-lens mounting mechanism; 4-focal length adjustment mechanism; 5-optical axis adjustment mechanism; 6-rear plate; 7-sealed decorative cover;

[0032] 11-Mounting plate;

[0033] 21-first sealing ring;

[0034] 31-lens mounting block; 32-lens; 33-compression spring; 34-lens mounting slot;

[0035] 41-front fixing plate; 42-tension spring; 43-focal length adjustment screw; 44-locking nut;

[0036] 411 - first receiving groove; 412 - fixing pin; 413 - second receiving groove; 414 - abutting pin;

[0037] 51-optical axis adjustment screw; 52-locking screw; 53-spring; 54-set screw;

[0038] 61-bolt; 62-second sealing ring. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0040] In the description of the present invention, the terms "upper", "lower", "above", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0042] The following combination Figure 1-5 The utility model is described in further detail.

[0043] Example 1

[0044] Reference Figure 1-5 As shown, this embodiment provides a multi-dimensional optical fiber coupling head, including:

[0045] Main shell 1;

[0046] An optical fiber connector 2, which is disposed on any side of the main housing 1;

[0047] The lens mounting mechanism 3 includes a lens mounting block 31, a lens 32 and a compression spring 33. The lens mounting block 31 is movably arranged at one end of the main housing 1 away from the optical fiber connector 2. The main housing 1 is provided with a lens mounting groove 34 for the lens mounting block 31 to be movably arranged. The lens 32 is arranged in the lens mounting block 31. The two ends of the compression spring 33 are respectively connected to the optical fiber connector 2 and the lens mounting block 31.

[0048] The focal length adjustment mechanism 4 includes a front fixing plate 41, the lens installation groove 34 is connected to the side of the main shell 1 away from the optical fiber connector 2, the front fixing plate 41 is arranged on the side of the main shell 1 away from the optical fiber connector 2 and covers the notch of the lens installation groove 34, the side of the main shell 1 provided with the optical fiber connector 2 is evenly provided with a plurality of first accommodating grooves 411, and the side of the front fixing plate 41 away from the optical fiber connector 2 is provided with first accommodating grooves 411 with the same structure at positions corresponding to the plurality of first accommodating grooves 411 on the main shell 1, and the main shell 1 is provided with A fixing pin 412 is clamped in the first receiving groove 411 on the front fixing plate 41, and the fixing pins 412 corresponding to each two positions are connected by a tension spring 42 respectively. A plurality of first threaded holes connected to a side of the main shell 1 away from the optical fiber connector 2 are evenly arranged on the side of the main shell 1 provided with the optical fiber connector 2, and a focus adjustment screw 43 is matched with the inner thread of the first threaded hole. One end of the focus adjustment screw 43 close to the front fixing plate 41 abuts against the front fixing plate 41, and the lens mounting block 31 abuts against the front fixing plate 41 through the compression spring 33;

[0049] The optical axis adjustment mechanism 5 includes two optical axis adjustment screws 51 which are vertically arranged. The axes of the two optical axis adjustment screws 51 are parallel to the front fixing plate 41. The side of the main shell 1 is provided with a second threaded hole which is threadedly matched with the optical axis adjustment screw 51. The second threaded hole is connected to the lens mounting groove 34. The optical axis adjustment screw 51 abuts against the lens mounting block 31.

[0050] In this embodiment, preferably, there are three tension springs 42 and three focus adjustment screws 43 .

[0051] In order to facilitate locking the lens mounting block 31 after the optical axis adjustment is completed, as a further improvement, the optical axis adjustment mechanism 5 also includes a locking screw 52, ​​the axis of the locking screw 52 is coplanar with the axes of the two optical axis adjustment screws 51, and the angles between the axis of the locking screw 52 and the axes of the two optical axis adjustment screws 51 are both 135°, and the side of the main shell 1 is provided with a third threaded hole that is threadedly matched with the locking screw 52, ​​and the third threaded hole is connected to the lens mounting groove 34.

[0052] After adjusting the optical axis position of the lens 32 by adjusting the optical axis adjusting screw 51 , the locking screw 52 is screwed so that the locking screw 52 abuts against the lens mounting block 31 to further fix the lens mounting block 31 to prevent the lens mounting block 31 from being displaced due to accidental vibration.

[0053] As a further improvement, a reed 53 abutting the lens mounting block 31 is provided in the lens mounting groove 34. The lens mounting groove 34 is provided with a clamping reed 53 and a makeshift space for the reed 53 to deform. The connecting line between the two ends of the reed 53 is perpendicular to the axis of the locking screw 52, ​​and the locking screw 52 can be screwed and abut the reed 53.

[0054] The spring leaf 53 is provided to further increase the damping when the optical axis adjusting screw 51 is screwed, and to provide an auxiliary restoring force for resetting the lens mounting block 31 when the optical axis adjusting screw 51 is screwed away from the lens mounting block 31 .

[0055] As a further improvement, one side of the main housing 1 where the optical fiber connector 2 is provided is provided with three fourth threaded holes respectively connected to the two second threaded holes and the third threaded hole, and the inner threads of the fourth threaded holes are matched with set screws 54.

[0056] The two optical axis adjustment screws 51 and the locking screw 52 are locked respectively by screwing the three set screws 54 .

[0057] As a further improvement, an abutment portion is provided at one end of the focal length adjustment screw 43 close to the front fixing plate 41, and the abutment portion is hemispherical. The front fixing plate 41 is provided with an abutment assembly with the same number as the abutment portions at the position corresponding to the abutment portion. The abutment assembly includes two adjacent second accommodating grooves 413 that are spaced apart and connected to a side of the front fixing plate 41 close to the optical fiber connector 2. An abutment pin 414 is provided in the second accommodating groove 413, and the abutment portion abuts against two adjacent abutment pins 414. The two adjacent second accommodating grooves 413 are connected to accommodate the abutment portion.

[0058] By setting the abutment portion to a hemispherical shape and setting the abutment assembly to two adjacent and spaced second accommodating grooves 413 and abutting pins 414 in the two second accommodating grooves 413, when the focus adjustment screw 43 abuts against the front fixing plate 41, the abutment portion abuts between the two abutment pins 414 of the abutment assembly. This arrangement enables each abutment portion to always be abutted by two abutment pins 414 in two opposite and intersecting directions when adjusting the focus adjustment mechanism 4, thereby preventing relative slippage between the abutment portion and the front fixing plate 41 and improving the working stability of the focus adjustment mechanism 4.

[0059] As a further improvement, a side of the front fixing plate 41 away from the optical fiber connector 2 is provided with a steel front plate that covers the first accommodating groove 411 , and a side of the steel front plate away from the optical fiber connector 2 is provided with a rubber front plate that covers the steel front plate.

[0060] The steel front sheet is provided to shield and fix the first accommodating groove 411 on the front fixing plate 41 , and the rubber front sheet is provided to prevent the laser emitting head from being accidentally hit and damaged.

[0061] As a further improvement, a mounting plate 11 is fixedly connected to a surface of the main housing 1 away from the optical fiber connector 2 , and a plurality of mounting holes are provided on the mounting plate 11 .

[0062] The installation plate 11 is provided and a plurality of installation holes are provided on the installation plate 11 to facilitate the installation and removal of the utility model on other devices or structures.

[0063] Example 2

[0064] Reference Figure 2 As shown, in order to improve the working stability of the lens mounting mechanism 3, this embodiment proposes an improvement based on embodiment 1, the main shell 1 is provided with a fiber optic mounting groove for accommodating the fiber optic connector 2, and the fiber optic connector 2 is provided with a first sealing ring 21 which respectively abuts the fiber optic connector 2 and the fiber optic mounting groove.

[0065] Since the compression spring 33 is directly connected to the optical fiber connector 2, the optical fiber connector 2 that is detachably installed on the main shell 1 is prone to loosening or displacement due to vibration when the compression spring 33 is subjected to force. Therefore, a first sealing ring 21 is provided so that the first sealing ring 21 respectively abuts against the optical fiber connector 2 and the optical fiber installation groove to improve the connection stability of the optical fiber connector 2 on the main shell 1.

[0066] As a further improvement, it also includes a rear plate 6, which abuts against and shields a side of the main shell 1 where the optical fiber connector 2 is provided. The rear plate 6 is connected to the main shell 1 by a plurality of bolts 61. A locking nut 44 is provided at the end of the focus adjustment screw 43 away from the front fixing plate 41, and the locking nut 44 is screwed and abutted against the rear plate 6.

[0067] The rear plate 6 is arranged to abut against and shield the side of the main housing 1 provided with the optical fiber connector 2 to abut against the first sealing ring 21 , thereby further improving the connection stability of the optical fiber connector 2 on the main housing 1 .

[0068] As a further improvement, a sealing decorative cover 7 is threadedly fitted on one end of the main shell 1 near the optical fiber connector 2. The sealing decorative cover 7 can cover the back plate 6 and the side of the main shell 1 near the optical fiber connector 2. A second sealing ring 62 is provided on the back plate 6. When the sealing decorative cover 7 is screwed onto the main shell 1, the second sealing ring 62 abuts against the sealing decorative cover 7.

[0069] The decorative cover is provided to conveniently shield the adjustment mechanisms after the utility model is adjusted to achieve the effects of dust prevention and accidental touch prevention.

[0070] A second sealing ring 62 is provided to provide additional damping when the dust cover is screwed to the final position on the main shell 1 to prevent over-screwing. At the same time, the elastic force provided by the second sealing ring 62 increases the mutual friction of the threads between the dust cover and the main shell 1, thereby ensuring the stability of the connection between the dust cover and the main shell 1.

[0071] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. 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 multi-dimensional optical fiber coupling head, characterized in that: include: Main shell; An optical fiber connector, the optical fiber connector being arranged on any one side of the main shell; A lens mounting mechanism, the lens mounting mechanism comprising a lens mounting block, a lens and a compression spring, the lens mounting block being movably arranged at one end of the main shell away from the optical fiber connector, the main shell being provided with a lens mounting groove for movably setting the lens mounting block, the lens being arranged in the lens mounting block, and the two ends of the compression spring being respectively connected to the optical fiber connector and the lens mounting block; A focus adjustment mechanism, wherein the focus adjustment mechanism comprises a front fixing plate, the lens mounting groove is connected to a side of the main shell away from the optical fiber connector, the front fixing plate is arranged on a side of the main shell away from the optical fiber connector and covers the notch of the lens mounting groove, a side of the main shell provided with the optical fiber connector is evenly provided with a plurality of first accommodating grooves, a side of the front fixing plate away from the optical fiber connector is provided with the first accommodating grooves with the same structure corresponding to the positions of the plurality of first accommodating grooves on the main shell, fixing pins are clamped in the first accommodating grooves on the main shell and the front fixing plate, the fixing pins corresponding to every two positions are connected by tension springs, a side of the main shell provided with the optical fiber connector is evenly provided with a plurality of first threaded holes connected to a side of the main shell away from the optical fiber connector, the inner thread of the first threaded hole is matched with a focus adjustment screw, an end of the focus adjustment screw close to the front fixing plate abuts against the front fixing plate, and the lens mounting block abuts against the front fixing plate through the compression spring; An optical axis adjustment mechanism, the optical axis adjustment mechanism includes two optical axis adjustment screws arranged perpendicular to each other, the axes of the two optical axis adjustment screws are parallel to the front fixing plate, the side of the main shell is provided with a second threaded hole threadedly matched with the optical axis adjustment screw, the second threaded hole is connected to the lens mounting groove, and the optical axis adjustment screw abuts the lens mounting block.

2. The multi-dimensional fiber coupling head according to claim 1, characterized in that: The main shell is provided with an optical fiber installation groove for accommodating the optical fiber connector, and the optical fiber connector is sleeved with a first sealing ring respectively abutting against the optical fiber connector and the optical fiber installation groove.

3. The multi-dimensional fiber coupling head according to claim 2, characterized in that: It also includes a back plate, which abuts against and shields a side of the main shell where the optical fiber connector is provided. The back plate is connected to the main shell via a plurality of bolts. A locking nut is provided at one end of the focal length adjustment screw away from the front fixing plate, and the locking nut is screwed and abutted against the back plate.

4. The multi-dimensional optical fiber coupling head according to claim 3, characterized in that: A sealing decorative cover is threadedly fitted at one end of the main shell near the optical fiber connector. The sealing decorative cover can cover the back plate and the side of the main shell near the optical fiber connector. A second sealing ring is provided on the back plate. When the sealing decorative cover is screwed onto the main shell, the second sealing ring abuts against the sealing decorative cover.

5. The multi-dimensional fiber coupling head according to claim 1, characterized in that: The optical axis adjustment mechanism also includes a locking screw, the axis of the locking screw is coplanar with the axes of the two optical axis adjustment screws, and the angles between the axis of the locking screw and the axes of the two optical axis adjustment screws are both 135°. The side of the main shell is provided with a third threaded hole that is threadedly matched with the locking screw, and the third threaded hole is connected to the lens mounting groove.

6. The multi-dimensional optical fiber coupling head according to claim 5, characterized in that: A reed abutting against the lens mounting block is provided in the lens mounting groove, and a space for clamping the reed and allowing the reed to deform is provided in the lens mounting groove. The connecting line of the two ends of the reed is perpendicular to the axis of the locking screw, and the locking screw can be screwed and abut against the reed.

7. The multi-dimensional fiber coupling head according to claim 5, characterized in that: A side of the main shell where the optical fiber connector is provided is provided with three fourth threaded holes respectively connected to the two second threaded holes and the third threaded hole, and the inner threads of the fourth threaded holes are matched with set screws.

8. The multi-dimensional fiber coupling head according to claim 1, characterized in that: An abutment portion is provided at one end of the focal length adjustment screw close to the front fixing plate, and the abutment portion is hemispherical. The front fixing plate is provided with abutment components at positions corresponding to the abutment portions, and the abutment components include two second accommodating grooves that are adjacent to each other and connected to a side of the front fixing plate close to the optical fiber connector. An abutment pin is provided in the second accommodating groove, and the abutment portion abuts against two adjacent abutment pins. Two adjacent second accommodating grooves are connected to accommodate the abutment portion.

9. The multi-dimensional fiber coupling head according to claim 1, characterized in that: A steel front sheet covering the first accommodating groove is disposed on one side of the front fixing plate away from the optical fiber connector, and a rubber front sheet covering the steel front sheet is disposed on one side of the steel front sheet away from the optical fiber connector.

10. The multi-dimensional optical fiber coupling head according to claim 1, characterized in that: A mounting plate is fixedly connected to one side of the main shell away from the optical fiber connector, and a plurality of mounting holes are arranged on the mounting plate.

Images