CN218524922U

CN218524922U - Plug-in automatic receiving optical module base

Info

Publication number: CN218524922U
Application number: CN202222840545.6U
Authority: CN
Inventors: 葛奇光; 韩勇; 葛建光; 刘羽
Original assignee: Suzhou Zhimahan Precision Technology Co ltd
Current assignee: Suzhou Zhimahan Precision Technology Co ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-02-24
Anticipated expiration: 2032-10-27

Abstract

The utility model discloses a plug-in automatic receipt optical module base belongs to optical module test technical field, has solved current optical module test and has had the problem that degree of automation is low, and its technical essential is: the optical module testing device comprises a fixing seat, an optical module, a golden finger, an optical module optical port, a protective pad, an adjusting driving mechanism and a clamping driving mechanism, wherein the optical module is arranged on the fixing seat, the connecting part of the optical module and the fixing seat is provided with the clamping mechanism, the optical fiber plugging mechanism and the golden finger plugging mechanism are connected with the adjusting driving mechanism, the clamping mechanism can drive the clamping plates to mutually approach to each other to clamp and fix the optical module, the protective pad arranged on the inner sides of the clamping plates can realize clamping protection of the optical module, the adjusting driving mechanism can respectively adjust and drive the optical fiber plugging mechanism and the golden finger plugging mechanism to operate, testing of the optical module optical port and the golden finger part of the optical module on the optical module is realized, the degree of automation is high, the problem that the existing optical module testing needs manual plugging and pulling of easily-damaged devices is solved, the testing efficiency is high, and the optical module testing device has the advantages of high degree of automation and convenience in use.

Description

Plug-in automatic receiving optical module base

Technical Field

The utility model relates to an optical module test field specifically relates to an automatic optical module base of receiving of plug-in.

Background

The optical fiber communication technology stands out from the optical communication, has become one of the main pillars of the modern communication, plays a very important role in the modern telecommunication network, and is an emerging technology, the development speed of which is fast in recent years, and the wide application range of which is rare in communication history, and is also an important mark of the world new technology revolution and a main transmission tool of various information in the future information society.

Most of existing optical module tests are manual operations, an optical module golden finger is firstly inserted into a connector of a test board, an optical fiber jumper is then inserted into an optical port of an optical module, a test computer is started to start testing, the existing optical module testing process is manual testing, when the optical module is manually inserted into the test board, the golden finger connector on the test board is damaged due to inaccurate alignment, the test board is high in maintenance frequency, the concentricity requirement of the optical interface of the optical module and the optical fiber jumper is high, the optical interface of the optical module is possibly damaged when the optical fiber jumper is manually inserted, the automation degree is low, and the requirement for practical use cannot be met.

Therefore, the existing optical module test has the defect of low automation degree, and is difficult to popularize and apply.

Therefore, it is desirable to provide a plug-in automatic receiving optical module base, which aims to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model provides an aim at provides an optical module base is received automatically to plug-in to solve the problem in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the pluggable automatic receiving optical module base comprises a base body, wherein a fixing base is fixedly connected to the base body, an optical module is arranged on the fixing base, a clamping mechanism is arranged at the joint of the optical module and the fixing base, an optical module optical port is formed in one end of the optical module, an optical module golden finger is arranged at the other end of the optical module, an optical fiber plugging mechanism is arranged on one side of the optical module optical port, a golden finger plugging mechanism is arranged on one side of the optical module golden finger, the optical fiber plugging mechanism and the golden finger plugging mechanism are movably connected to the base body, the optical fiber plugging mechanism and the golden finger plugging mechanism are connected with an adjusting driving mechanism, and the adjusting driving mechanism is installed inside the base body.

As a further scheme of the utility model, optic fibre plug mechanism includes optic fibre jumper seat, optic fibre jumper connector, third cylinder and second slide, optic fibre jumper connector installs in the inside of optic fibre jumper seat, optic fibre jumper connector adaptation is pegged graft on the optical module light mouthful, be provided with the apron that is used for installing fixed interior on the optic fibre jumper seat, the output shaft of optic fibre jumper seat fixedly connected with third cylinder, third cylinder fixed mounting is on the second slide, second slide swing joint is on the base, and the third cylinder can drive optic fibre jumper connector and rise to the concentric position department with the butt joint of optical module light mouth.

As a further aspect of the present invention, the optical fiber plugging mechanism further includes a first linear driving group for ordering the second sliding plate to move, the first linear driving group includes a second lead screw, a second connecting shaft and a second driven gear, the second sliding plate is connected to the base through a second sliding rod, the second sliding plate is connected to the second lead screw through a second sliding rod, the second lead screw is connected to the second lead screw through a third bevel gear pair, the second connecting shaft is connected to the inside of the base in a rotating manner, a second driven gear is fixedly connected to the second connecting shaft, the first cylinder drives the moving block to move, so that the driving gear is located at a position where the second driven gear is engaged and connected, at this time, the second motor operates to order the driving gear to rotate, the second connecting shaft is rotated under a relationship between the driving gear and the second driven gear, the second connecting shaft is rotated under a relationship between the third bevel gear pair, the second lead screw is inserted into the optical fiber connector under a relationship between the second sliding plate and the second lead screw, and the optical fiber connector is inserted into the optical module, so as to realize the test of the optical module.

As a further proposal, the golden finger plug mechanism comprises a test board, a test board connector, a first sliding board and a second cylinder, the piston rod of the second cylinder is fixedly connected with the test board, the test board connector is fixedly connected with one end of the test board, the adapter of the test board connector is inserted on the golden finger of the optical module, the second cylinder is fixedly connected on the first sliding board, the first sliding board is movably connected on the base, and the second cylinder can drive the test board connector on the test board to rise to the concentric position of the golden finger of the optical module.

As a further aspect of the present invention, the golden finger plug mechanism further includes a second linear driving set for ordering about the movement of the first sliding plate, the second linear driving set includes a first lead screw, a first connecting shaft and a first driven gear, the first sliding plate is connected to the base through a first sliding rod, the first sliding plate is connected to the first lead screw through a first screw rod, the first lead screw is connected to the first connecting shaft through a second bevel gear pair, the first connecting shaft is connected to the inside of the base in a rotating manner, the first driven gear is fixedly connected to the first connecting shaft, the first cylinder drives the moving block to move, so that the driving gear is located at a position connected with the first driven gear in a meshing manner, at this time, the second motor operates to order about the driving gear to rotate, the first connecting shaft rotates under the relation of meshing connection of the driving gear and the first driven gear, the first connecting shaft rotates under the relation of the second bevel gear pair, the first lead screw rotates, the golden module is inserted into the optical module connector under the relation of the first sliding plate and the first lead screw in a connecting manner, and the golden finger connector is inserted into the optical module.

As a further scheme of the utility model, it includes first cylinder, driving gear, second motor and movable block to adjust actuating mechanism, the driving gear is connected with second driven gear and first driven gear meshing respectively, the output shaft of driving gear fixedly connected with second motor, second motor fixed connection is on the movable block, movable block sliding connection is in the inside of base, the piston rod of the first cylinder of movable block fixedly connected with, first cylinder fixed mounting is in the inside of base.

As a further scheme of the utility model, fixture includes grip block, two-way lead screw and first motor, two-way lead screw rotates to be connected in the fixing base, grip block threaded connection is on two-way lead screw, the inboard of grip block is provided with the protection and fills up, two-way lead screw rotates through first bevel gear pair and is connected with the output shaft of first motor, first motor fixed mounting is in the inside of fixing base.

As a further aspect of the present invention, the outside of the base is provided with a control panel, the bottom of the base is provided with a plurality of supporting legs.

To sum up, compared with the prior art, the embodiment of the utility model has the following beneficial effects:

the utility model discloses a fixture who sets up orders about that the grip block is close to each other and accomplishes the centre gripping of focusing on the module fixed, and the protection pad that the grip block inboard set up can realize the centre gripping protection of focusing on the module, the subsequent test operation of being convenient for.

The optical module optical interface testing device has the advantages that the optical fiber plugging mechanism and the golden finger plugging mechanism can be respectively adjusted and driven to operate through the adjusting and driving mechanism, so that the optical module optical interface on the optical module and the golden finger of the optical module can be tested, the automation degree is high, and the problem that the existing optical module test needs to manually plug and pull a device which is easy to damage is solved.

The optical fiber patch cord connector can be driven to move and adjust in height and linear direction through the arranged optical fiber plug mechanism, testing of an optical port of the optical module is achieved, concentricity is good, and testing efficiency is high.

The golden finger plugging mechanism can drive the test board connector to move and adjust in height and straight line direction, test of the golden finger of the optical module is achieved, concentricity is good, and test efficiency is high.

To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic view of the connection structure inside the fixing base in the embodiment of the present invention.

Fig. 3 is a schematic diagram of an explosive connection structure of an optical fiber jumper base in an embodiment of the utility model.

Fig. 4 is a schematic view of a connection structure inside the base in the embodiment of the present invention.

Reference numerals are as follows: 1. a base; 2. a first cylinder; 3. supporting legs; 4. a fixed seat; 5. a clamping plate; 6. a protective pad; 7. an optical module; 8. an optical module optical port; 9. an optical module golden finger; 10. a bidirectional screw rod; 11. a first bevel gear pair; 12. a first motor; 13. a first skid plate; 14. a second cylinder; 15. a control panel; 16. a test board; 17. testing the board connector; 18. a first lead screw; 19. a first slide bar; 20. a second bevel gear pair; 21. a first connecting shaft; 22. a first driven gear; 23. an optical fiber jumper base; 24. an optical fiber jumper connector; 25. a cover plate; 26. a third cylinder; 27. a second slide plate; 28. a second slide bar; 29. a second lead screw; 30. a third bevel gear pair; 31. a second connecting shaft; 32. a second driven gear; 33. a driving gear; 34. a second motor; 35. a moving mass is moved.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The following detailed description is provided to illustrate specific embodiments of the present invention.

Referring to fig. 1 and 2, a plug-in type automatic receiving optical module base includes a base 1, a fixing seat 4 is fixedly connected to the base 1, an optical module 7 is arranged on the fixing seat 4, a clamping mechanism is arranged at a joint of the optical module 7 and the fixing seat 4, an optical module optical port 8 is arranged at one end of the optical module 7, an optical module golden finger 9 is arranged at the other end of the optical module 7, an optical fiber plug-in mechanism is arranged at one side of the optical module optical port 8, a golden finger plug-in mechanism is arranged at one side of the optical module golden finger 9, the optical fiber plug-in mechanism and the golden finger plug-in mechanism are both movably connected to the base 1, the optical fiber plug-in mechanism and the golden finger plug-in mechanism are both connected with an adjusting drive mechanism, and the adjusting drive mechanism is installed inside the base 1.

Further, fixture includes grip block 5, two-way lead screw 10 and first motor 12, two-way lead screw 10 rotates to be connected in fixing

base

4, 5 threaded connection of grip block is on two-way lead screw 10, the inboard of grip block 5 is provided with protection pad 6, two-way lead screw 10 rotates through first bevel gear pair 11 and is connected with the output shaft of first motor 12, first motor 12 fixed mounting is in the inside of fixing base 4.

Further, the outside of base 1 is provided with control panel 15, the bottom of base 1 is provided with a plurality of supporting legs 3.

Preferably, the optical module 7 is placed on the fixing seat 4, the control panel 15 controls the first motor 12 in the fixing seat 4 to operate, the output shaft of the first motor 12 drives the bidirectional screw rod 10 to rotate under the connection relation of the first bevel gear pair 11, so that the clamping plates 5 are driven to be close to each other under the connection relation of the bidirectional screw rod 10 and clamping and fixing of the optical module 7 are completed, and the protection pad 6 arranged on the inner side of the clamping plates 5 can clamp and protect the optical module 7.

Correspondingly, the protection pad 6 may be made of an elastic rubber pad.

Accordingly, the output shaft of the first motor 12 can be driven in forward and reverse rotation.

It should be noted that, the control panel 15 is electrically connected to the input end of the first motor 12, and the first motor 12 and the control panel 15 are both powered by an externally connected power source, which is the prior art and will not be described herein.

As shown in fig. 1-4, as a preferred embodiment of the present invention, the optical fiber plugging/unplugging mechanism includes an optical fiber jumper seat 23, an optical fiber jumper connector 24, a third cylinder 26 and a second sliding plate 27, the optical fiber jumper connector 24 is installed in the optical fiber jumper seat 23, the optical fiber jumper connector 24 is adapted to be plugged in the optical module optical port 8, the optical fiber jumper seat 23 is provided with a cover plate 25 for fixing, the optical fiber jumper seat 23 is fixedly connected with an output shaft of the third cylinder 26, the third cylinder 26 is fixedly installed on the second sliding plate 27, and the second sliding plate 27 is movably connected to the base 1.

Further, optic fibre plug mechanism still includes the first linear drive group that orders about second slide plate 27 and remove, first linear drive group includes second lead screw 29, second connecting axle 31 and second driven gear 32, second slide plate 27 is through second slide bar 28 sliding connection on base 1, second slide plate 27 threaded connection is on second lead screw 29, second lead screw 29 rotates through third bevel gear pair 30 and is connected with second connecting axle 31, second connecting axle 31 rotates and connects in the inside of base 1, fixedly connected with second driven gear 32 on the second connecting axle 31.

Further, the golden finger plugging mechanism comprises a testing plate 16, a testing plate connector 17, a first sliding plate 13 and a second cylinder 14, the testing plate 16 is fixedly connected with a piston rod of the second cylinder 14, one end of the testing plate 16 is fixedly connected with the testing plate connector 17, the testing plate connector 17 is adapted to be plugged on the golden finger 9 of the optical module, the second cylinder 14 is fixedly connected on the first sliding plate 13, and the first sliding plate 13 is movably connected on the base 1.

Further, golden finger plug mechanism is still including the second linear drive group that orders about first sliding plate 13 and remove, second linear drive group is including first lead screw 18, first connecting axle 21 and first driven gear 22, first sliding plate 13 is through first slide bar 19 sliding connection on base 1, first sliding plate 13 threaded connection is on first lead screw 18, first lead screw 18 rotates through second bevel gear pair 20 and is connected with first connecting axle 21, first connecting axle 21 rotates and connects in the inside of base 1, fixedly connected with first driven gear 22 on the first connecting axle 21.

Further, the adjusting and driving mechanism comprises a first air cylinder 2, a driving gear 33, a second motor 34 and a moving block 35, the driving gear 33 is meshed with a second driven gear 32 and a first driven gear 22 respectively, the driving gear 33 is fixedly connected with an output shaft of the second motor 34, the second motor 34 is fixedly connected to the moving block 35, the moving block 35 is connected to the inside of the base 1 in a sliding manner, the moving block 35 is fixedly connected with a piston rod of the first air cylinder 2, and the first air cylinder 2 is fixedly mounted in the base 1.

Preferably, in this embodiment, when the optical module optical port 8 on the optical module 7 needs to be tested, the third cylinder 26 drives the optical fiber jumper connector 24 to rise to a concentric position in butt joint with the optical module optical port 8, the control panel 15 controls the first cylinder 2 to drive the moving block 35 to move, so that the driving gear 33 is located at a position in meshing connection with the second driven gear 32, at this time, the second motor 34 operates to drive the driving gear 33 to rotate, the second connecting shaft 31 is driven to rotate under the relation that the driving gear 33 is in meshing connection with the second driven gear 32, the second connecting shaft 31 drives the second lead screw 29 to rotate under the connection relation of the third bevel gear pair 30, and the optical fiber jumper connector 24 is driven to be plugged into the optical module optical port 8 under the relation that the second sliding plate 27 is in threaded connection with the second lead screw 29, so as to implement the test on the optical module optical port 8, which is good in concentricity and high in test efficiency.

Preferably, when the optical module golden finger 9 on the optical module 7 needs to be tested, the second cylinder 14 drives the test board connector 17 on the test board 16 to rise to a concentric position in butt joint with the optical module golden finger 9, the control panel 15 controls the first cylinder 2 to drive the moving block 35 to move, so that the driving gear 33 is located at a position in meshed connection with the first driven gear 22, at this time, the second motor 34 operates to drive the driving gear 33 to rotate, the first connecting shaft 21 is driven to rotate under the relation in which the driving gear 33 is meshed connection with the first driven gear 22, the first connecting shaft 21 drives the first lead screw 18 to rotate under the connection relation of the second bevel gear pair 20, and the test board connector 17 is driven to be plugged into the optical module golden finger 9 under the relation in which the first sliding plate 13 is in threaded connection with the first lead screw 18, so that the test on the optical module golden finger 9 is realized, the concentricity is good, the test efficiency is high, and the automation degree is high.

Accordingly, the output shaft of the second motor 34 can be driven in forward and reverse rotation.

It should be noted that, the control panel 15 is electrically connected to the input ends of the first cylinder 2, the second cylinder 14, the third cylinder 26 and the second motor 34, respectively, and the first cylinder 2, the second cylinder 14, the third cylinder 26, the second motor 34 and the control panel 15 are all powered by an externally connected power supply, which is the prior art and will not be described herein again.

The utility model discloses a theory of operation is: the optical module 7 is placed on the fixed seat 4, the control panel 15 controls the first motor 12 in the fixed seat 4 to operate, the output shaft of the first motor 12 drives the bidirectional screw rod 10 to rotate under the connection relation of the first bevel gear pair 11, so that the clamping plates 5 are driven to mutually approach to finish clamping and fixing the optical module 7 under the threaded connection relation of the bidirectional screw rod 10, and the protective pad 6 arranged on the inner side of the clamping plates 5 can realize clamping protection of the optical module 7; when the optical module light port 8 on the optical module 7 needs to be tested, the third cylinder 26 drives the optical fiber jumper connector 24 to rise to the concentric position butted with the optical module light port 8, the control panel 15 controls the first cylinder 2 to drive the moving block 35 to move, so that the driving gear 33 is positioned at the position meshed and connected with the second driven gear 32, at this time, the second motor 34 operates to drive the driving gear 33 to rotate, the second connecting shaft 31 is driven to rotate under the relation that the driving gear 33 is meshed and connected with the second driven gear 32, the second connecting shaft 31 is driven to rotate under the relation that the third bevel gear pair 30 is connected with the second lead screw 29, the optical fiber jumper connector 24 is driven to be plugged into the optical module light port 8 under the relation that the second sliding plate 27 is in threaded connection with the second lead screw 29, the test on the optical module light port 8 is realized, the concentricity is good, and the test efficiency is high, when the optical module golden finger 9 on the optical module 7 needs to be tested, the second cylinder 14 drives the test board connector 17 on the test board 16 to rise to the concentric position abutting against the optical module golden finger 9, the control panel 15 controls the first cylinder 2 to drive the moving block 35 to move, so that the driving gear 33 is located at the position engaged with the first driven gear 22, at this time, the second motor 34 operates to drive the driving gear 33 to rotate, the first connecting shaft 21 is driven to rotate under the relationship of the engagement between the driving gear 33 and the first driven gear 22, the first connecting shaft 21 drives the first screw 18 to rotate under the relationship of the second bevel gear pair 20, the test board connector 17 is driven to be inserted into the optical module golden finger 9 under the relationship of the threaded connection between the first sliding plate 13 and the first screw 18, the test of the optical module golden finger 9 is realized, the concentricity is good, the test efficiency is high, and the automation degree is high, the problem that the existing optical module test needs manual plugging and unplugging of the fragile device is solved.

It should be noted that, in the present application, all the components are general-purpose standard components or components known to those skilled in the art, which effectively solve the problem of low automation degree of the existing optical module test.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a plug-in automatic receiving optical module base, includes base (1), its characterized in that, fixedly connected with fixing base (4) on base (1), be provided with optical module (7) on fixing base (4), the junction of optical module (7) and fixing base (4) is provided with fixture, the one end of optical module (7) is provided with optical module optical port (8), the other end of optical module (7) is provided with optical module golden finger (9), one side of optical module optical port (8) is provided with optic fibre plug mechanism, one side of optical module golden finger (9) is provided with golden finger plug mechanism, optic fibre plug mechanism and golden finger plug mechanism all swing joint are on base (1), optic fibre plug mechanism and golden finger plug mechanism all are connected with the regulation actuating mechanism, it installs in the inside of base (1) to adjust actuating mechanism.

2. The pluggable automatic receiving optical module base according to claim 1, wherein the optical fiber pluggable mechanism comprises an optical fiber jumper base (23), an optical fiber jumper connector (24), a third cylinder (26) and a second sliding plate (27), the optical fiber jumper connector (24) is installed inside the optical fiber jumper base (23), the optical fiber jumper connector (24) is adapted to be plugged into an optical port (8) of the optical module, a cover plate (25) used for installing and fixing is arranged on the optical fiber jumper base (23), the optical fiber jumper base (23) is fixedly connected with an output shaft of the third cylinder (26), the third cylinder (26) is fixedly installed on the second sliding plate (27), and the second sliding plate (27) is movably connected to the base (1).

3. The pluggable automatic receiving optical module base according to claim 2, wherein the optical fiber plugging mechanism further comprises a first linear driving set driving a second sliding plate (27) to move, the first linear driving set comprises a second lead screw (29), a second connecting shaft (31) and a second driven gear (32), the second sliding plate (27) is slidably connected to the base (1) through a second sliding rod (28), the second sliding plate (27) is in threaded connection with the second lead screw (29), the second lead screw (29) is rotatably connected to the second connecting shaft (31) through a third bevel gear pair (30), the second connecting shaft (31) is rotatably connected to the inside of the base (1), and the second driven gear (32) is fixedly connected to the second connecting shaft (31).

4. The pluggable automatic receiving optical module base according to claim 3, wherein the golden finger plugging mechanism comprises a test board (16), a test board connector (17), a first sliding plate (13) and a second cylinder (14), the test board (16) is fixedly connected with a piston rod of the second cylinder (14), one end of the test board (16) is fixedly connected with the test board connector (17), the test board connector (17) is adapted to be plugged into the golden finger (9) of the optical module, the second cylinder (14) is fixedly connected to the first sliding plate (13), and the first sliding plate (13) is movably connected to the base (1).

5. The pluggable automatic receiving optical module base according to claim 4, wherein the golden finger plugging mechanism further comprises a second linear driving set for driving the first sliding plate (13) to move, the second linear driving set comprises a first lead screw (18), a first connecting shaft (21) and a first driven gear (22), the first sliding plate (13) is slidably connected to the base (1) through a first sliding rod (19), the first sliding plate (13) is connected to the first lead screw (18) in a threaded manner, the first lead screw (18) is rotatably connected to the first connecting shaft (21) through a second bevel gear pair (20), the first connecting shaft (21) is rotatably connected to the inside of the base (1), and the first driven gear (22) is fixedly connected to the first connecting shaft (21).

6. The pluggable automatic receiving optical module base according to claim 5, wherein the adjusting driving mechanism comprises a first cylinder (2), a driving gear (33), a second motor (34) and a moving block (35), the driving gear (33) is meshed with a second driven gear (32) and a first driven gear (22) respectively, the driving gear (33) is fixedly connected with an output shaft of the second motor (34), the second motor (34) is fixedly connected to the moving block (35), the moving block (35) is slidably connected to the inside of the base (1), the moving block (35) is fixedly connected with a piston rod of the first cylinder (2), and the first cylinder (2) is fixedly installed inside the base (1).

7. The plug-in automatic receiving optical module base according to claim 1, wherein the clamping mechanism comprises a clamping plate (5), a bidirectional screw rod (10) and a first motor (12), the bidirectional screw rod (10) is rotatably connected in the fixing base (4), the clamping plate (5) is in threaded connection with the bidirectional screw rod (10), a protective pad (6) is arranged on the inner side of the clamping plate (5), the bidirectional screw rod (10) is rotatably connected with an output shaft of the first motor (12) through a first bevel gear pair (11), and the first motor (12) is fixedly installed inside the fixing base (4).

8. The pluggable automatic receiving optical module base according to claim 1, wherein a control panel (15) is disposed on an outer side of the base (1), and a plurality of supporting legs (3) are disposed at a bottom of the base (1).