Microminiature multichannel optical fiber slip ring

Abstract

The utility model relates to the technical field of optical fiber slip rings, and discloses a microminiature multichannel optical fiber slip ring, which comprises a stator shell, a central rotating shaft and a rotor shell, the rotor shell drives the central rotating shaft to rotate along the axis of the stator shell through a transmission mechanism, the transmission ratio of the transmission mechanism is 2: 1, the stator shell is adopted to rotate, and the central rotating shaft rotates along the axis of the stator shell. The rotor shell and the movable sealing ring are fixed for dynamic sealing; the stator shell is fixedly connected with a split flange through a screw, and a plurality of through holes which are annularly and uniformly distributed along the axis of the stator shell are formed in the split flange. According to the utility model, the split flanges are connected with the slip ring body in an installation mode, and the interface mode is flexible and changeable, thereby being suitable for the installation of the optical fiber slip ring in various scenes; the spring seal adopts a mode that a stator shell rotates and a rotor shell is fixed with a dynamic seal ring, so that the installation diameter of the dynamic seal is saved, and the size of the whole slip ring can be further reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical fiber slip ring technical field, concretely is a kind of micro multi-channel optical fiber slip ring. BACKGROUND

[0002] Optical fiber rotary connector is a kind of 360 degree unrestricted rotation device for transmitting optical communication, main function is when transmitting optical fiber signal, signal interruption does not appear.Optical fiber rotary connector is realized based on the optical transmission characteristics of dove prism, when dove prism rotates with angular velocity ω, the image formed by dove prism rotates with angular velocity 2ω, so, if the rotational speed ratio of object and dove prism is 2:1, the image formed by object can be realized stationary.

[0003] Conventional optical fiber slip ring size is larger, and the number of channels is less, adopts micro collimator, generally has deflection angle output, bonding size is larger, cannot effectively utilize space, limit the number of channels in optical fiber rotary connector inside, limit the number of signal transmission;Meanwhile, the flange of conventional optical fiber slip ring and stator shell are integrally formed, which brings many inconveniences to the installation of the overall slip ring in the space-limited place;And, the conventional dynamic sealing mode limits the diameter of the overall optical fiber slip ring, so that the size of the finally formed optical fiber slip ring is larger. UTILITARY MODEL CONTENTS

[0004] (I) technical problem solved

[0005] In view of the deficiencies of prior art, the utility model provides a kind of micro multi-channel optical fiber slip ring, solve the overall size miniaturization of existing optical fiber slip ring due to installation mode and processing limit, it is difficult to implement, there are many inconvenient problems when installing through the flange of integral molding every day.

[0006] (II) technical scheme

[0007] To achieve the above object, the utility model is realized by the following technical scheme:

[0008] A kind of micro multi-channel optical fiber slip ring, including stator shell, center rotating shaft and rotor shell, the rotor shell is driven center rotating shaft to rotate along the axis of the stator shell by transmission mechanism, the transmission ratio of the transmission mechanism is 2:1, using stator shell rotation, rotor shell and dynamic sealing ring fixed mode carry out dynamic sealing;The split flange is fixedly connected on the stator shell by screw, the split flange is arranged with the annular distribution of several through holes along the axis of the stator shell, the stator shell is arranged with the screw hole matched with the through hole.

[0009] Preferably, one end of the central rotating shaft is fixedly connected with a prism adjusting seat, a prism sleeve is suspendedly extruded in the prism adjusting seat, and the dovetail prism is bonded in the prism sleeve, the optical axis of the dovetail prism is adjusted to coincide with the axis of the central rotating shaft, and the inner hole of the central rotating shaft near the dovetail prism is larger than the maximum diameter of the dovetail prism.

[0010] Preferably, four groups of adjusting holes are uniformly distributed on the prism adjusting seat along the central axis, and the prism sleeve is suspendedly extruded and fixed by screws threadedly connected in the adjusting holes.

[0011] Preferably, the inner cavities of the stator shell and the rotor shell near the central rotating shaft are respectively provided with a stator end optical fiber collimator assembly and a rotor end optical fiber collimator assembly, the stator end optical fiber collimator assembly and the rotor end optical fiber collimator assembly are fixed on a bonding sleeve through a bonding glass tube, the bonding glass tube is fixedly connected with the optical fiber collimator assembly, and the bonding sleeve is fixedly arranged in the inner cavities of the stator shell and the rotor shell.

[0012] Preferably, the transmission mechanism comprises a stator bevel gear sleeve and a rotor bevel gear sleeve, the inner cavity of the stator shell is fixedly connected with the stator bevel gear sleeve, the inner cavity of the rotor shell is fixedly connected with the rotor bevel gear sleeve, the rotor bevel gear sleeve and the stator bevel gear sleeve drive the central rotating shaft to rotate along the axis direction through a group of transmission bevel gears, the rotor bevel gear sleeve, the stator bevel gear sleeve and the transmission bevel gears form a planetary gear train, and the transmission bevel gears can rotate on the central rotating shaft.

[0013] Preferably, the number of teeth of the rotor bevel gear sleeve and the stator bevel gear sleeve is consistent, the tooth number ratio of the rotor bevel gear sleeve to the transmission bevel gear is 60:24, and the modulus is 0.1-0.25.

[0014] (Three) beneficial effects

[0015] The utility model has the following beneficial effects:

[0016] The micro multi-channel optical fiber slip ring is connected with the slip ring body through split flanges in the installation mode, the interface mode is flexible and changeable, and the optical fiber slip ring installation is adapted to various scenes; the dynamic seal is saved in the mode that the stator shell rotates and the rotor shell and the dynamic sealing ring are fixed, the diameter of the installation of the dynamic seal is saved, and the size of the whole slip ring can be further reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the utility model;

[0018] Figure 2 It is a part split structure schematic view of the utility model;

[0019] Figure 3 It is the A-A direction section view structure schematic diagram of the utility model;

[0020] Figure 4 It is the prism adjusting seat whole structure schematic diagram of the utility model.

[0021] In the drawing: 1, stator shell;2, stator end optical fiber collimator assembly;21, bonding sleeve;22, bonding glass tube;3, dove prism;31, prism adjusting seat;32, prism sleeve;33, adjusting hole;4, center rotating shaft;5, stator bevel gear cover;6, rotor shell;7, rotor bevel gear cover;8, rotor end optical fiber collimator assembly;9, transmission bevel gear;10, dynamic sealing ring;11, split flange;111, through hole;112, screw hole. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Please refer to Figure 1 The utility model provides a kind of technical scheme: a micro multi-channel optical fiber slip ring, including stator shell 1, center rotating shaft 4 and rotor shell 6, rotor shell 6 is rotated along the axis of stator shell 1 by transmission mechanism to drive center rotating shaft 4, the transmission ratio of transmission mechanism is 2:1, using stator shell 1 rotation, the mode of dynamic sealing of rotor shell 6 and dynamic sealing ring 10 fixed;Stator shell 1 is fixedly connected by screw and is provided with split flange 11, split flange 11 is provided with a plurality of through holes 111 evenly distributed along the axis of stator shell 1, and stator shell 1 is provided with screw hole 112 matched with through hole 111.

[0024] The utility model, by installation mode, split flange and slip ring body are connected, the interface mode is flexible and changeable, adapts to the installation of optical fiber slip ring in various scenes;The mode of dynamic sealing of stator shell 1 rotation, rotor shell 6 and dynamic sealing ring 10 fixed, saves the installation diameter of dynamic sealing, so that the size of entire slip ring can be further reduced.

[0025] Refer to Figure 3As shown, in the embodiment, the one end of the center rotating shaft 4 close to the stator shell 1 is fixedly connected with a prism adjusting seat 31, the prism adjusting seat 31 has a prism sleeve 32 suspendedly installed in the inner cavity, the prism sleeve 32 has a dove prism 3 bonded in the inner cavity, the optical axis of the dove prism 3 is adjusted to coincide with the axis of the center rotating shaft 4, and the inner hole of the one end of the center rotating shaft 4 close to the dove prism 3 is larger than the maximum diameter of the dove prism 3. Through the prism sleeve 32 arranged at the one end of the center rotating shaft 4, the optical axis of the suspendedly arranged dove prism 3 can be accurately adjusted to coincide with the axis of the center rotating shaft 4 through the prism adjusting seat 31; meanwhile, the inner hole larger than the maximum diameter of the dove prism 3 is arranged at the one end of the center rotating shaft 4, under this mounting mode, the passing area of the light path passing hole is effectively increased, the high coaxiality of the dove prism 3 and the center rotating shaft 4 is ensured, more channel fiber collimator assemblies can be arranged in the whole fiber rotary connector, and more light path channel transmission modes are formed.

[0026] Referring to Figure 3 With 4 As shown, in the embodiment, four groups of adjusting holes 33 are uniformly distributed along the central axis on the prism adjusting seat 31, and the prism sleeve 32 is suspendedly and extrudedly fixed through the screws threadedly connected in the adjusting holes 33. Eight screws adjusting holes 33 are adopted to adjust the six degrees of freedom of the dove prism 3 in the prism sleeve 32, the optical axis of the dove prism 3 is adjusted to coincide with the axis of the center rotating shaft 4, the passing area of the light path passing hole is effectively increased, the high coaxiality of the dove prism 3 and the center rotating shaft 4 is ensured, more channel fiber collimator assemblies can be arranged in the whole fiber rotary connector, and more light path channel transmission modes are formed.

[0027] In the embodiment, the one end of the inner cavities of the stator shell 1 and the rotor shell 6 close to the center rotating shaft 4 is respectively provided with a stator end fiber collimator assembly 2 and a rotor end fiber collimator assembly 8, the stator end fiber collimator assembly 2 and the rotor end fiber collimator assembly 8 are both adhesively fixed on an adhesive sleeve 21 through an adhesive glass tube 22, the adhesive glass tube 22 is adhesively fixed with the fiber collimator assembly, and the adhesive sleeve 21 is fixedly arranged in the inner cavities of the stator shell 1 and the rotor shell 6.

[0028] Referring to Figure 2As shown, in the embodiment, the transmission mechanism comprises a stator bevel gear sleeve 5 and a rotor bevel gear sleeve 7, the inner cavity of the stator shell 1 is fixedly connected with the stator bevel gear sleeve 5, the inner cavity of the rotor shell 6 is fixedly connected with the rotor bevel gear sleeve 7, the rotor bevel gear sleeve 7 and the stator bevel gear sleeve 5 are driven to rotate along the axial direction by a group of transmission bevel gears 9, the rotor bevel gear sleeve 7, the stator bevel gear sleeve 5 and the transmission bevel gears 9 form a planetary gear train, and the transmission bevel gears can rotate on the central rotating shaft 4. The gear type transmission mechanism adopts a small modulus gear, the modulus is 0.1-0.25, the number of gears is 60 and 24 respectively, which greatly reduces the outer diameter of the gear, and is beneficial to reduce the size of the entire optical fiber slip ring.

[0029] In the embodiment, the number of teeth of the rotor bevel gear sleeve 7 and the stator bevel gear sleeve 5 is consistent, the tooth number ratio of the rotor bevel gear sleeve 7 and the transmission bevel gear 9 is 60:24, and the modulus is 0.1-0.25.

[0030] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the statement "including a limited element" does not exclude the existence of other identical elements in the process, method, article or equipment including the element.

[0031] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A miniature multi-channel fiber optic slip ring, comprising a stator housing, a central rotating shaft, and a rotor housing, wherein the rotor housing drives the central rotating shaft to rotate along the axis of the stator housing via a transmission mechanism, the transmission ratio of the transmission mechanism being 2:1, characterized in that: Dynamic sealing is achieved by rotating the stator housing and fixing the rotor housing to the dynamic sealing ring. A split flange is fixedly connected to the stator housing by screws. The split flange has several through holes evenly distributed in a ring along the axis of the stator housing. The stator housing has screw holes that match the through holes.

2. The miniature multi-channel fiber optic slip ring according to claim 1, characterized in that: A prism adjustment seat is fixedly connected to one end of the central rotating shaft near the stator housing. A prism sleeve is installed in the inner cavity of the prism adjustment seat under pressure and suspension. A Daowei prism is bonded to the inner cavity of the prism sleeve. The optical axis of the Daowei prism is adjusted to coincide with the axis of the central rotating shaft. The inner hole of the central rotating shaft near the Daowei prism is larger than the maximum diameter of the Daowei prism.

3. A miniature multi-channel fiber optic slip ring according to claim 2, characterized in that: The prism adjustment seat has four sets of adjustment holes evenly distributed in a ring along the central axis. The prism sleeve is suspended and fixed by screws connected by threads in the adjustment holes.

4. A miniature multi-channel fiber optic slip ring according to claim 3, characterized in that: The stator housing and the rotor housing are respectively provided with a stator-end fiber optic collimator assembly and a rotor-end fiber optic collimator assembly at the end of the inner cavity near the central rotation axis. The stator-end fiber optic collimator assembly and the rotor-end fiber optic collimator assembly are both bonded and fixed to the adhesive sleeve by adhesive glass tubes. The adhesive glass tubes are bonded and fixed to the fiber optic collimator assemblies. The adhesive sleeves are respectively fixedly arranged in the inner cavity of the stator housing and the rotor housing.

5. A miniature multi-channel fiber optic slip ring according to any one of claims 1-4, characterized in that: The transmission mechanism includes a stator bevel gear sleeve and a rotor bevel gear sleeve. The stator bevel gear sleeve is fixedly connected to the inner cavity of the stator housing, and the rotor bevel gear sleeve is fixedly connected to the inner cavity of the rotor housing. The rotor bevel gear sleeve and the stator bevel gear sleeve are driven by a set of transmission bevel gears to rotate the central rotating shaft along the axial direction. The rotor bevel gear sleeve, the stator bevel gear sleeve, and the transmission bevel gears form a planetary gear system. The transmission bevel gears can rotate on the central rotating shaft.

6. A miniature multi-channel fiber optic slip ring according to claim 5, characterized in that: The rotor bevel gear sleeve and the stator bevel gear sleeve have the same number of teeth. The tooth ratio of the rotor bevel gear sleeve to the transmission bevel gear is 60:24, and the module is 0.1-0.25.

Images