CN111413767A - Variable attenuator for communication - Google Patents
Variable attenuator for communication Download PDFInfo
- Publication number
- CN111413767A CN111413767A CN202010392868.6A CN202010392868A CN111413767A CN 111413767 A CN111413767 A CN 111413767A CN 202010392868 A CN202010392868 A CN 202010392868A CN 111413767 A CN111413767 A CN 111413767A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- ceramic core
- variable attenuator
- driving
- driving sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
Abstract
The invention relates to a variable attenuator for communication, which comprises a shell, a sleeve arranged in the shell, and a first ceramic core and a second ceramic core which are sleeved at two ends in the sleeve, wherein optical fibers are arranged in the first ceramic core and the second ceramic core, an external thread is arranged at the upper end of the second ceramic core, a driving sleeve is sleeved outside the sleeve, an internal thread matched with the external thread is arranged on the driving sleeve, and the driving sleeve is connected with a rotary driving device for driving the driving sleeve to rotate; the invention can realize the adjustment of the attenuation value by adjusting the distance between the optical fiber ends of the first ceramic core and the second ceramic core, compared with other variable attenuators, the first ceramic core is in a fixed state, the upper end of the second ceramic core is provided with external threads, the second ceramic core is externally sleeved with a driving sleeve, and the driving sleeve rotates to drive the second ceramic core to move up and down, so that the position adjustment of the second ceramic core is more accurate.
Description
Technical Field
The invention relates to a variable attenuator for communication.
Background
When the optical transmission equipment is newly installed, the luminous power is often too high, a fixed-value attenuator (such as 10 dB) needs to be added, but after long-time operation, the attenuation value of an optical cable or a tail fiber carried by a service is gradually increased, the originally added attenuator is large, error codes or service obstruction can be caused, and the tail fiber cannot be easily pulled out to replace the attenuator. There is a need for a variable attenuator that has a large attenuation value when it is newly built, and reduces the attenuation value of the attenuator when the line loss or the loss of the equipment itself increases, without interrupting the optical path or the service.
Disclosure of Invention
The invention provides a variable attenuator for communication, which can adjust attenuation value according to actual condition.
The technical scheme adopted by the invention is as follows:
a variable attenuator for communication comprises a shell, a sleeve arranged in the shell, and a first ceramic core and a second ceramic core which are sleeved at two ends in the sleeve, wherein optical fibers are arranged in the first ceramic core and the second ceramic core.
The upper end of the second porcelain core is provided with an external thread, a driving sleeve is sleeved outside the sleeve, an internal thread matched with the external thread is arranged on the driving sleeve, and the driving sleeve is connected with a rotary driving device for driving the driving sleeve to rotate.
A sliding groove is axially arranged at the lower end of the second ceramic core, and a clamping block matched with the sliding groove is arranged in the sleeve.
Further, the second porcelain core is including being the second porcelain body of axle form and setting up the second shaft shoulder at second porcelain body middle part, the external screw thread is located the top of second shaft shoulder, and the spout is located the below of second shaft shoulder, the external diameter of second shaft shoulder is greater than telescopic internal diameter.
Further, first porcelain core is including being the first porcelain body of axial form and setting up the first shaft shoulder on first porcelain body, the external diameter of first shaft shoulder is greater than telescopic internal diameter.
Furthermore, the rotary driving device comprises a conical tooth arranged on the outer side wall of the driving sleeve, a speed reducing motor arranged on the inner wall of the shell and a bevel gear arranged on an output shaft of the speed reducing motor, and the bevel gear is matched with the conical tooth.
Further, the driving sleeve comprises a shell and a through hole formed in the top of the shell, the internal thread is formed in the side wall of the through hole, and the conical teeth are arranged on the outer side wall of the shell.
Furthermore, a limiting block is arranged on the inner wall of the driving sleeve, and a limiting sliding groove is axially arranged on the outer side wall of the sleeve.
Furthermore, the limiting sliding groove is in an inverted T shape.
Further, the bevel gear is located on the upper side of the tapered teeth.
Furthermore, an angle sensor is connected to the driving sleeve.
Furthermore, the angle sensor adopts a space constant-wound MCJS non-contact angle sensor.
The invention has the positive effects that:
the invention can realize the adjustment of the attenuation value by adjusting the distance between the optical fiber ends of the first ceramic core and the second ceramic core, compared with other variable attenuators, the first ceramic core is in a fixed state, the upper end of the second ceramic core is provided with external threads, the second ceramic core is externally sleeved with a driving sleeve, and the driving sleeve rotates to drive the second ceramic core to move up and down, so that the position adjustment of the second ceramic core is more accurate. Since the geometric parameters of the external thread and the internal thread are known, the position adjustment amount of the second porcelain core can be accurately obtained by obtaining the rotation angle of the driving sleeve through a technical means, so that the attenuation value can be accurately adjusted.
And there is the joint structure between second porcelain core and sleeve, and when the driving sleeve was rotatory, the unable rotation of second porcelain core can only reciprocate to realize position adjustment.
The bevel gear is positioned on the upper side of the bevel gear, the sleeve is provided with the sliding groove, the driving sleeve is provided with the limiting block corresponding to the limiting sliding groove, and the limiting block is positioned at the bottommost end of the sliding groove when assembly is completed, so that the limiting of the driving sleeve can be realized variably, axial displacement cannot occur when the driving sleeve rotates, and the matching precision is ensured.
The angle sensor is adopted to measure the rotation angle of the driving sleeve, the displacement of the second porcelain core is calculated through the rotation angle of the driving sleeve, and even if the matching between the bevel gear and the conical teeth has errors, the calculation cannot be influenced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a second ceramic core structure according to the present invention;
FIG. 3 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;
FIG. 4 is a schematic view of a first porcelain core structure according to the present invention;
FIG. 5 is a schematic view of a rotary driving device according to the present invention;
FIG. 6 is a schematic view of a driving sleeve according to the present invention;
fig. 7 is a schematic view of the structure of the limiting chute of the invention.
In the drawings, there is shown in the drawings,
1-a housing;
2-a sleeve;
3-a first porcelain core, 301-a first porcelain body, 302-a first shaft shoulder;
4-a second porcelain core, 401-a second porcelain body, 402-an external thread, 403-a second shoulder and 404-a chute;
5-driving sleeve, 501-shell, 502-through hole, 503-internal thread and 504-limiting block;
6-rotation driving device, 601-conical tooth, 602-speed reducing motor and 603-bevel gear;
7-a fixture block;
8-limiting sliding groove.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.
Example 1
As shown in the attached figures 1-7, the present invention comprises a housing 1, a sleeve 2 disposed on the bottom surface of the housing 1, a first ceramic core 3 and a second ceramic core 4 respectively sleeved on two ends of the sleeve 2, and a driving mechanism connected to the second ceramic core 4 for driving the second ceramic core 4 to move up and down, wherein one end of the sleeve 2 is disposed in the housing 1, the other end extends out of the housing 1, the first ceramic core 3 is disposed at the outer end of the sleeve 2, and the second ceramic core 4 is disposed at the inner end of the sleeve 2. All be equipped with optic fibre in first porcelain core 3 and second porcelain core 4, can realize the adjustment of decrement through the interval between the first porcelain core 3 of adjustment and the 4 tip of second porcelain core.
The second porcelain core 4 comprises a shaft-shaped second porcelain body 401 and a second shaft shoulder 403 arranged in the middle of the second porcelain body 401, an external thread 402 is arranged on the portion, located above the second shaft shoulder 403, of the second porcelain body 401, a sliding groove 404 arranged along the axial direction is arranged on the portion, located below the second shaft shoulder 403, of the second porcelain body 401, and the portion, located below the second shaft shoulder 403, of the second porcelain body 401 and the sleeve 2 are in clearance fit and can move in the sleeve 2.
The outside cover at sleeve 2 has driving sleeve 5, be equipped with the internal thread 503 with external screw thread 402 looks adaptation on driving sleeve 5, rotary driving device drives driving sleeve 5 rotatory, simultaneously in order to prevent that second porcelain core 4 is rotatory, be provided with in sleeve 2 with spout 404 matched with fixture block 7, fixture block 7 slides in spout 404, the second porcelain body can only reciprocate in sleeve 2 like this, and can't rotate, when driving sleeve 5 is rotatory, just can only reciprocate in sleeve 2, realize the distance adjustment between two porcelain cores, and then the adjustment volume of declining.
As shown in fig. 6, the driving sleeve 5 includes a housing 501 and a through hole 502 disposed at the top of the housing 501, and the internal thread 503 is disposed on the sidewall of the through hole 502.
As shown in fig. 5 and 6, the rotary driving device includes a tapered tooth 601 disposed on the outer side wall of the driving sleeve 5, a speed reducing motor 602 disposed on the inner wall of the housing 1, and a bevel gear 603 disposed on the output shaft of the speed reducing motor 602, the tapered tooth 601 is disposed on the outer side wall of the housing 501 of the driving sleeve 5, and the bevel gear 603 is matched with the tapered tooth 601.
In order to prevent the driving sleeve 5 from axial displacement on the sleeve 2, a corresponding limit structure is provided. A limiting block 504 is arranged on the inner wall of the driving sleeve 5, and an inverted T-shaped limiting chute 8 is arranged on the outer side wall of the sleeve 2. During installation, the limiting block 504 is aligned to the vertical groove of the limiting sliding groove 8, the driving sleeve 5 is pushed downwards, the limiting block 504 enters the bottom end of the limiting sliding groove 8, and the driving sleeve 5 is limited to be incapable of moving downwards continuously. Meanwhile, the bevel gear 603 is positioned above the tapered teeth 601, so that the driving sleeve 5 can be limited from moving upwards after installation is completed.
Example 2
In the embodiment, an angle sensor is added on the basis of the embodiment 1, and the model of the angle sensor is a Tianyu constant-wound MCJS non-contact angle sensor.
The angle sensor is connected with the driving sleeve 5, the rotating angle of the driving sleeve 5 is recorded, so that the rotating angle of the driving sleeve 5 under the action of the rotary driving device can be remotely obtained, the geometric parameters of the internal thread and the external thread are known, the offset of the second porcelain body can be calculated after the deflection angle of the driving sleeve 5 is known, and the driving sleeve 5 is driven to rotate by controlling the start and stop of the speed reducing motor 602, so that the accurate adjustment of the attenuation can be realized.
The rotary driving device drives the driving sleeve to rotate, the driving sleeve directly drives the second porcelain body to move, and the second porcelain body is in threaded connection with the driving sleeve, so that the threaded connection is high in precision, and the displacement of the second porcelain body can be accurately calculated.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A variable attenuator for communication is characterized by comprising a shell (1), a sleeve (2) arranged in the shell (1), and a first ceramic core (3) and a second ceramic core (4) which are sleeved at two ends in the sleeve (2), wherein optical fibers are arranged in the first ceramic core (3) and the second ceramic core (4);
an external thread (402) is arranged at the upper end of the second porcelain core (4), a driving sleeve (5) is sleeved outside the sleeve (2), an internal thread (503) matched with the external thread (402) is arranged on the driving sleeve (5), and the driving sleeve (5) is connected with a rotary driving device (6) for driving the driving sleeve to rotate;
a sliding groove (404) is axially arranged at the lower end of the second porcelain core (4), and a clamping block (7) matched with the sliding groove (404) is arranged in the sleeve (2).
2. The variable attenuator for communication of claim 1, wherein the second porcelain core (4) comprises a second porcelain body (401) in a shaft shape and a second shoulder (403) disposed at the middle of the second porcelain body (401), the external thread (402) is located above the second shoulder (403), the runner (404) is located below the second shoulder (403), and the outer diameter of the second shoulder (403) is larger than the inner diameter of the sleeve (2).
3. A variable attenuator for communications according to claim 1, characterized in that the first porcelain core (3) comprises a first porcelain body (301) having a shaft shape and a first shoulder (302) provided on the first porcelain body (301), the first shoulder (302) having an outer diameter larger than the inner diameter of the sleeve (2).
4. The variable attenuator of claim 1, wherein the rotary driving device (6) comprises a conical tooth (601) disposed on the outer side wall of the driving sleeve (5), a reduction motor (602) disposed on the inner wall of the housing (1), and a bevel gear (603) disposed on the output shaft of the reduction motor (602), the bevel gear (603) being engaged with the conical tooth (601).
5. The variable attenuator for communication according to claim 4, characterized in that the driving sleeve (5) comprises a housing (501) and a through hole (502) arranged at the top of the housing (501), the internal thread (503) is arranged on the side wall of the through hole (502), and the tapered teeth (601) are arranged on the outer side wall of the housing (501).
6. The variable attenuator for communication according to claim 1 or 5, characterized in that the inner wall of the driving sleeve (5) is provided with a limiting block (504), and the outer side wall of the sleeve (2) is provided with a limiting sliding groove (8) along the axial direction.
7. The variable attenuator for communication according to claim 6, characterized in that the limiting chute (8) is in the shape of an inverted T.
8. The variable attenuator for communication according to claim 4, characterized in that the bevel gear (603) is located on the upper side of the tapered teeth (601).
9. The variable attenuator of claim 1, wherein an angle sensor is connected to the driving sleeve (5).
10. The variable attenuator of claim 9, wherein the angle sensor is a space constant MCJS contactless angle sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010392868.6A CN111413767A (en) | 2020-05-11 | 2020-05-11 | Variable attenuator for communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010392868.6A CN111413767A (en) | 2020-05-11 | 2020-05-11 | Variable attenuator for communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111413767A true CN111413767A (en) | 2020-07-14 |
Family
ID=71492282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010392868.6A Pending CN111413767A (en) | 2020-05-11 | 2020-05-11 | Variable attenuator for communication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111413767A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113131318A (en) * | 2021-03-05 | 2021-07-16 | 长春理工大学 | Tunable mode-locked fiber laser based on spiral mechanism, preparation method and output method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020110304A1 (en) * | 2001-02-09 | 2002-08-15 | Werkheiser Arthur H. | Reflection suppression in multiple- reflector collimation system" . |
| CN103091781A (en) * | 2013-02-04 | 2013-05-08 | 宁波电业局 | Light attenuator |
| CN105817161A (en) * | 2016-04-19 | 2016-08-03 | 宿迁淮海科技服务有限公司 | Stirring bucket |
-
2020
- 2020-05-11 CN CN202010392868.6A patent/CN111413767A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020110304A1 (en) * | 2001-02-09 | 2002-08-15 | Werkheiser Arthur H. | Reflection suppression in multiple- reflector collimation system" . |
| CN103091781A (en) * | 2013-02-04 | 2013-05-08 | 宁波电业局 | Light attenuator |
| CN105817161A (en) * | 2016-04-19 | 2016-08-03 | 宿迁淮海科技服务有限公司 | Stirring bucket |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113131318A (en) * | 2021-03-05 | 2021-07-16 | 长春理工大学 | Tunable mode-locked fiber laser based on spiral mechanism, preparation method and output method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111413767A (en) | Variable attenuator for communication | |
| CN104297895B (en) | Power zoom is away from mirror group switching device | |
| CN106252801B (en) | A kind of filter input and output coupling tuning structure | |
| CN208535111U (en) | The phase-condition system and its power transmission device of phase shifter | |
| CN106602841A (en) | Permanent-magnet speed regulator speed regulation mechanism | |
| CN105514533B (en) | C-type waveguide switch with alignment function | |
| CN109451101A (en) | A kind of transmission mechanism and terminal | |
| CN211283266U (en) | Adjustable wire coil for winding machine | |
| DE69937851T2 (en) | Fiber optic position sensor for tuning capacitor | |
| EP1429163A2 (en) | Fiber optic rotary flex joint | |
| CN206541913U (en) | A kind of winged bar coupling adjusting structure | |
| CN110544906B (en) | Cable positioning device | |
| CN209980857U (en) | Manual winding machine | |
| CN219652436U (en) | Winding device and heat insulation rod preparation system | |
| CN209871961U (en) | Vortex line optical fiber coiling device | |
| CN209177772U (en) | A kind of wrap-up convenient for cable construction | |
| CN106219323B (en) | A kind of main axle structure that rotates of optical cable looping device | |
| CN208780201U (en) | A kind of combined type forced centering observation mark pier | |
| CN107986105B (en) | Automatic winding cable device | |
| CN220334726U (en) | Repeated torsion precision mechanism | |
| CN208221981U (en) | A kind of high-precision CCD adjusting mechanism for computer | |
| CN220646472U (en) | Universal motor shaft | |
| CN104167289A (en) | Variable-pitch heating wire winding machine | |
| CN215567088U (en) | Multisection spiral telescopic link device of flexible volume of controllable essence | |
| CN108535831A (en) | The varifocal optical system of Driven by Ultrasonic Motors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200714 |