CN107144411B - Percussion device - Google Patents
Percussion device Download PDFInfo
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- CN107144411B CN107144411B CN201710494509.XA CN201710494509A CN107144411B CN 107144411 B CN107144411 B CN 107144411B CN 201710494509 A CN201710494509 A CN 201710494509A CN 107144411 B CN107144411 B CN 107144411B
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- hits
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- angle
- percussion device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- General Physics & Mathematics (AREA)
- Electrophonic Musical Instruments (AREA)
Abstract
The embodiment of the invention discloses a kind of percussion devices, it includes that frame, two hits arms positioned opposite and two projected angle of impact adjust positioning component, one end installation of each hits arm forms restrained end on said frame, and the restrained end can be rotated relative to respective shaft, the other end of each hits arm freely is arranged to form free end, and the free end is respectively arranged with grip part, the grip part is for holding rammer；Two projected angle of impact adjust positioning component and are used to adjust the angle between two hits arms；And for positioning position of two hits arms respectively on corresponding projected angle of impact adjusting positioning component；Two hits arm to be individually fixed at corresponding projected angle of impact position；Wherein, two hits arm can be rotated along respective shaft under the action of self-weight, so that the rammer generates shock.The percussion device of the embodiment of the present invention solves traditional impact test technical problem poor, simultaneity is poor and operating efficiency is lower with uniformity.
Description
Technical field
The invention belongs to mechanical equipment manufacturing field more particularly to a kind of percussion devices for simulating people's two-arm.
Background technique
When testing the product with specific shape, it is sometimes desirable to simulate actual use situation to observe product and become
Shape.Such as in the test of game paddle, needs both hands to hold product and whole arm straight line is called to clash, to simulate and observe
Product stress in actual use and deformation condition.Current test generally stretches both arms by people, stresses on both hands and holds product,
With certain dynamics, two products are repeated as many times in different directions respectively and are clashed, thus observes distortion caused by product
Deformation etc., to achieve the purpose that life test.
Such impact test completed by manpower has the following drawbacks: need to be equipped with manpower, higher cost；Hit consistency
Difference, manpower operation are difficult to hold the dynamics of each product head-on collision, not can guarantee each impact force unification, manpower operation is difficult to hold
The direction that product is hit, not can guarantee the accurate and uniformity of each striking experiment crash direction；Simultaneity is poor, and manpower is difficult to essence
The movement travel and movement velocity for really holding every product, while not can guarantee two products shocks when hitting generation every time
Property；Manpower operation's low efficiency, permanent operation, large labor intensity, people are easy physical strength and are fatigued, and cause working efficiency lower；Manpower connects
Product is touched, be easy to cause product surface to pollute and scratch, influences product appearance.
In short, traditional impact test technical problem poor, simultaneity is poor and operating efficiency is lower with uniformity.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of percussion device, for solving traditional impact test with one
The technical problem that cause property is poor, simultaneity difference and operating efficiency are lower.
The embodiment of the invention provides a kind of percussion devices comprising:
Frame；
One end installation of two hits arms positioned opposite, each hits arm forms restrained end on said frame, and it is described about
Shu Duanneng is rotated relative to respective shaft, and the other end of each hits arm is freely arranged to form free end, and the free end is distinguished
It is provided with grip part, the grip part is for holding rammer；
Two projected angle of impact adjust positioning component, for adjusting the angle between two hits arms；And for positioning two hits arms
The position on positioning component is adjusted in corresponding projected angle of impact respectively；Two hits arm to be individually fixed in respectively
At self-corresponding projected angle of impact position；
Wherein, two hits arm can be rotated along respective shaft under the action of self-weight, so that the rammer generates
It hits.
Further, two projected angle of impact adjust each projected angle of impact in positioning component adjust positioning component be equipped with to
Few angle adjustment holes；It includes positioning that two projected angle of impact, which adjusts each projected angle of impact in positioning component and adjusts positioning component,
Part, the angle that each locating piece extends through corresponding two hits arm and is inserted at least one angle adjustment holes
In adjustment hole.
Further, two projected angle of impact adjusts positioning component and respectively includes dial, and the dial is respectively set
In on the frame facet for installing the restrained end, at least one described angle adjustment holes are opened in the dial respectively
On.
Further, the percussion device further include:
Sliding panel offers strip hole on the sliding panel, and two locating pieces sequentially pass through the strip hole, two respectively
Hits arm is simultaneously inserted into the corresponding angle adjustment holes.
Further, the percussion device further include:
Two installation slide plates, each installation slide plate are set to the frame top, and can be in the flat of the frame top
Face sliding, the shaft are individually fixed on the two installations slide plate.
Further, two bearing support block groups, the two bearing support blocks group are respectively arranged on each installation slide plate
It is respectively used to carry the shaft.
Further, the shaft can move in the two bearing support blocks group along the axial direction of the shaft respectively
It is dynamic；Or the shaft is retractable spindle.
Further, two hits arm includes multi arm, and two alternate arms are detachably connected in multi arm；Or institute
It states two hits arms and respectively includes upper and lower arms, the lower arm is set in the upper arm and can freely stretch in the upper arm
Contracting.
Further, the grip part includes the first link block interconnected and the first terminal pad, first connection
Block is connected to the free end of the hits arm, and first terminal pad can be rotated relative to first link block；
The grip part further includes transiting rod, the second link block interconnected and the second terminal pad, the transiting rod
Both ends are separately connected first terminal pad and second link block, and second terminal pad can be relative to described second
Link block rotation；
The grip part further includes upper fixture block and lower fixture block interconnected, and is connected in second terminal pad, is used
In gripping the rammer.
Further, first link block is made of soft elastic material.
Percussion device provided in an embodiment of the present invention adjusts positioning component by two projected angle of impact and two hits arms is had
It is same to hit dynamics, it ensure that impact test consistency with higher；In addition, two hits arms are simultaneously after locating piece of choosing
It is rotated under the action of self-weight along respective shaft, ensure that impact test simultaneity with higher；Pass through mechanical analogue people
Arm, avoids due to manually hitting that physical strength is fatigued, and sustainable non-stop run improves working efficiency.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the schematic perspective view of percussion device provided in an embodiment of the present invention；
Fig. 2 is the schematic perspective view of the grip part of percussion device provided in an embodiment of the present invention；
Fig. 3 is a partial structural diagram of percussion device provided in an embodiment of the present invention；
Fig. 4 is the another partial structural diagram of percussion device provided in an embodiment of the present invention；
Fig. 5 is that the sliding panel of percussion device provided in an embodiment of the present invention and locating piece install explosive view.
Specific embodiment
Carry out the embodiment that the present invention will be described in detail below in conjunction with accompanying drawings and embodiments, how the present invention is applied whereby
Technological means solves technical problem and reaches the realization process of technical effect to fully understand and implement.
As used some vocabulary to censure specific components in the specification and claims.Those skilled in the art answer
It is understood that hardware manufacturer may call the same component with different nouns.This specification and claims are not with name
The difference of title is as the mode for distinguishing component, but with the difference of component functionally as the criterion of differentiation.Such as logical
The "comprising" of piece specification and claim mentioned in is an open language, therefore should be construed to " include but do not limit
In "." substantially " refer within the acceptable error range, those skilled in the art can within a certain error range solve described in
Technical problem basically reaches the technical effect.In addition, " coupling " or " electric connection " word include herein it is any directly and
The electric property coupling means connect.Therefore, if it is described herein that a first device is coupled to a second device, then the first device is represented
It can be directly electrically coupled to the second device, or be electrically coupled to described second indirectly by other devices or coupling means
Device.Specification subsequent descriptions are to implement better embodiment of the invention, and so the description is of the invention general to illustrate
For the purpose of principle, the range that is not intended to limit the invention.Protection scope of the present invention is when view appended claims institute defender
Subject to.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
It include so that the process, method, commodity or the system that include a series of elements not only include those elements, but also to wrap
Include the other elements being not explicitly listed, or further include for this process, method, commodity or system intrinsic want
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described want
There is also other identical elements in the process, method of element, commodity or system.
Specific embodiment
The following drawings is please referred to, Fig. 1 is the schematic perspective view of percussion device provided in an embodiment of the present invention；Fig. 2 is
The schematic perspective view of the grip part of percussion device provided in an embodiment of the present invention；Fig. 3 is provided in an embodiment of the present invention hits
Hit a partial structural diagram of device；Fig. 4 is the another partial structural diagram of percussion device provided in an embodiment of the present invention；
Fig. 5 is that the sliding panel of percussion device provided in an embodiment of the present invention and locating piece install explosive view.
As shown, percussion device provided in an embodiment of the present invention includes two hits arms 10, the adjusting positioning of two projected angle of impact
Component 20 and frame 30；Percussion device further includes two installation slide plates 40 and sliding panel 50 in preferred embodiment.
Two hits arms 10 are relatively arranged on frame 30, and one end of each hits arm 10 is mounted on frame 30 and forms restrained end
110, restrained end 110 can be rotated relative to respective shaft 120；The other end of each hits arm 10 is freely arranged to form free end 130,
The free end 130 of each hits arm 10 is respectively arranged with grip part 140, and grip part 140 is for holding rammer；
Each projected angle of impact adjusts positioning component 20 and is used to adjust the angle between two hits arms 10；And it is hit for positioning two
Arm 10 adjusts the position on positioning component 20 in corresponding projected angle of impact respectively；Two hits arms 10 to be individually fixed in respectively
At self-corresponding projected angle of impact position；
Wherein, two hits arms 10 can be rotated along respective shaft 120 under the action of self-weight, so that rammer generation is hit
It hits, such as when each projected angle of impact adjusts positioning component 20 and loses the positioning to two hits arms 10, work of two hits arms 10 in self weight
It is rotated under along respective shaft 120, so that grip part 140 is bumped against in bottom, i.e., so that rammer generates shock.
In other preferred embodiments of the invention, each projected angle of impact adjusts positioning component 20 and is equipped at least one angle
Adjustment hole 210, it includes locating piece 220 that each projected angle of impact, which adjusts positioning component 20, and each locating piece 220 extends through corresponding two and hits
Hit arm 10 and in angle adjustment holes 210 being inserted at least one angle adjustment holes 210.Herein, two locating pieces 220 divide
Not Guan Chuan two hits arms 10, and be inserted into angle adjustment holes 210, two hits arms 10 be individually fixed in corresponding angle of impingement
Degree；Wherein, after extracting two locating pieces 220, two hits arms 10 are rotated along respective shaft 120 under the action of self-weight, so that
Rammer generates shock.
In addition, two projected angle of impact, which adjust positioning component 20, respectively further comprises dial 230, dial 230 is respectively arranged at
On the side for installing the frame 30 of restrained end 110, at least one angle adjustment holes 210 is opened in respectively on dial 230.Specifically
Ground, multiple angle adjustment holes 210 are provided on dial 230, and dial 230 is set to the frame 30 of installation restrained end 110
On side, that is, it is fixed on the spindle nose position of shaft 120, can be across shaft 120, but shaft 120 can be in dial 230
Rotation；It is also possible to be set to the lower section of shaft 120, is spaced a distance with the spindle nose of shaft 120, that is, is in shaft 120
Spindle nose and hits arm 10 free end 130 between position, and in 90 degree of arc range be arranged 9 angle adjustment holes
210, each angle adjustment holes 210 represent 10 degree, are inserted into any one angle adjustment holes through hits arm 10 using locating piece 220
210, and then hits arm 10 is fixed at corresponding projected angle of impact position, another hits arm 10 also makes it in the same way
It is fixed at same projected angle of impact position, then rammer is placed in grip part 140, then by extracting two locating pieces
220, so that two hits arms 10 are rotated along respective shaft 120 under the action of self-weight, make to hit produce during rotation
It is raw to hit.Herein, hits arm 10 generally has same projected angle of impact, can guarantee that two hits arms 10 are produced in bottommost in this way
Raw to hit, respective shock dynamics is maximum and identical, ensure that impact test consistency with higher.
In other preferred embodiments of the invention, sliding panel 50 offers strip hole 510, and two locating pieces 220 are threaded through
In strip hole 510, i.e., two locating pieces 220 initially pass through sliding panel 50, are then then passed through two hits arms 10, are finally inserted two angle tune
In knothole 210, and then two hits arms 10 are fixed at corresponding projected angle of impact position, it in this way can be simultaneously by sliding panel 50
Two locating pieces 220 are extracted, ensure that two hits arms 10 while being fallen, that is, ensure that impact test simultaneity with higher.
In addition, two locating pieces 220 are first fixed on sliding panel 50 by fixing bolt 520, it is then then passed through two hits arms 10 insertion two
In angle adjustment holes 210, this ensure that two locating pieces 220 have more globality, being further ensured that can be simultaneously by two locating piece
220 extract, and ensure that two hits arms 10 while falling, that is, ensure that impact test simultaneity with higher.
Each installation slide plate 40 is set to 30 top of frame, and can distinguish in the planar slide on 30 top of frame, shaft 120
It is fixed on two installation slide plates 40, each install is respectively arranged with two bearing support block groups 410, two bearing support block groups on slide plate 40
410 are respectively used to carrying shaft 120.It such as installs on slide plate 40 and 30 top of frame opens up hole respectively, slide plate 40 is installed
It can according to need in sliding on planes where 30 top of frame, to adjust the distance between two shafts 120, and then can adjust
Save the shock dynamics of two hits arms 10 being connected with two shafts 120, it is to be regulated to will peace by fixing bolt after predeterminated position
Dress slide plate 40 is fixed on 30 top of frame.Two shafts 120 are fixed on two installation slide plates 40 by two bearing support block groups 410 respectively
On, specifically, each bearing support block group 410 respectively includes two bearing support blocks, is located at the both ends of bearing 120, uses
In carrying shaft 120, bearing 120 can rotate in bearing support block group 410, in other preferred embodiment middle (center) bearings of the invention
Support base group 410 can also be slided on installation slide plate 40 to adjust the distance between two shafts 120.
In addition, shaft 120 can move in two bearing support block groups 410 on the axial direction of shaft 120 respectively；Or
Person's shaft 120 is retractable spindle, both designs can guarantee that the spacing between 30 side of two hits arms 10 and frame is adjustable, i.e.,
When the size for being knocked object is bigger, need to tune up the spacing between 30 side of two hits arms 10 and frame to avoid hitting
Object is knocked during hitting to collide with frame 30.
Two hits arms 10
It include multi arm (not shown), two alternate arms are detachably connected in multi arm；Or two hits arm 10
Respectively include upper arm 150 and lower arm 160, lower arm 160 be set in upper arm 150 and can in upper arm 150 free extension.Specifically
Ground, whether either double section arm configurations (upper arm 150 and lower arm 160) of the multistage arm configuration of hits arm 10, its purpose is to
Guarantee that the length of hits arm 10 is adjustable, to meet different shock requirements；Wherein, multistage arm configuration is by increasing or reducing
The number of arm to adjust the length of hits arm 10, and double sections of arm configurations be then by lower arm 160 in upper arm 150 free extension
Adjust the length of hits arm 10.
The embodiment of the present invention is described by taking double sections of arm configurations (upper arm 150 and lower arm 160) as an example, and lower arm is connected to
The grip part 140 of 160 lower ends includes the first link block 1401, the first terminal pad 1402, transiting rod 1403, the second link block
1404, the second terminal pad 1405, upper fixture block 1406 and lower fixture block 1407.First link block 1401 and the first terminal pad 1402 are mutually
Connection；Second link block 1404 and the first terminal pad 1405 are connected with each other；The both ends of transiting rod 1403 are separately connected the first connection
Disk 1402 and the second link block 1404；Upper fixture block 1406 and lower fixture block 1407 are connected with each other, and are connected to the second terminal pad 1405,
It is used to grip rammer, that is, passes through the mutual clamping of upper fixture block 1406 and lower fixture block 1407, rammer is fixed on and is held
It holds in portion.Also, the first terminal pad 1402 can be rotated relative to the first link block 1401, and rotational plane is lower arm 160
End face；Second terminal pad 1405 can be rotated relative to the second link block 1404, rotational plane and 1402 phase of the first terminal pad
Stereoscopic three-dimensional structure may make up for the plane of the first link block 1401 rotation, i.e. the clamping direction of guarantee grip part can be with 360
Degree rotation, namely guarantee the versatility hit, pass through the gripping direction for adjusting grip part 140 in the case where not taking down rammer
It realizes the shock in multiple faces, promotes collision efficiency.
In other preferred embodiments of the invention, the first link block 1401 is made of soft elastic material, this soft elasticity
First link block 1401 made of material can simulate robot arm wrist, and it is slow to play toughness when two hits arms 10 are mutually hit
The effect of punching.
In addition, the addition dynamometer 60 of the being also an option that property of percussion device of the embodiment of the present invention, dynamometer 60 are set to
On frame 30, generally before impact test progress, dynamometer 60 is fixed on by the point of impingement (generally hits arm by fastening bolt
10 in free-falling the attainable minimum point of the institute of grip part 140), each hits arm 10 is then placed in different angles respectively
In adjustment hole 210, and its free-falling is allowed to read shock dynamics, as the shock dynamics of the projected angle of impact when hitting,
It repeats different angle adjustment holes 210 and obtains the impact force that all projected angle of impact adjust all projected angle of impact on positioning component 20
Degree, and recorded；Dynamometer 60 is removed after measurement and carries out actual rammer impact test.
Percussion device provided in an embodiment of the present invention adjusts the adjusting of positioning component by two projected angle of impact, so that two hit
Arm is hit with same shock dynamics, ensure that impact test consistency with higher；In addition, after two locating pieces of choosing,
Two hits arms can be rotated along respective shaft under the action of self-weight simultaneously, and then be collided after running similarly distance,
It ensure that impact test simultaneity with higher；And by mechanical analogue robot arm, avoid physical strength due to manually hitting tired
, sustainable non-stop run improves working efficiency；In addition, by the gripping of grip part, and pass through rotation grip part
The shock of product all directions is implemented in direction, and hand-held hit is avoided to be easy to cause product surface to pollute and scratch and then influence product
Appearance.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of percussion device characterized by comprising
Frame；
One end installation of two hits arms positioned opposite, each hits arm forms restrained end, and the restrained end on said frame
It can be rotated relative to respective shaft, the other end of each hits arm is freely arranged to form free end, and the free end is respectively set
There is grip part, the grip part is for holding rammer；
Two projected angle of impact adjust positioning component, for adjusting the angle between two hits arms, and for positioning two hits arms difference
The position on positioning component is adjusted in corresponding projected angle of impact, it is respectively right that two hits arm is individually fixed in
At the projected angle of impact position answered；
Wherein, two hits arm can be rotated along respective shaft under the action of self-weight, so that the rammer generates shock.
2. percussion device according to claim 1, which is characterized in that two projected angle of impact adjusts each in positioning component
Projected angle of impact adjusts positioning component and is equipped at least one angle adjustment holes；Two projected angle of impact adjusts each in positioning component
It includes locating piece that projected angle of impact, which adjusts positioning component, and each locating piece extends through corresponding two hits arm and is inserted into
In an angle adjustment holes in few angle adjustment holes.
3. percussion device according to claim 2, which is characterized in that two projected angle of impact adjusts positioning component and wraps respectively
Dial is included, the dial is respectively arranged on the frame facet for installing the restrained end, at least one described angle
Degree adjustment hole is opened in respectively on the dial.
4. percussion device according to claim 3, which is characterized in that further include:
Sliding panel, offers strip hole on the sliding panel, and two locating pieces sequentially pass through the strip hole respectively, two hit
Arm is simultaneously inserted into the corresponding angle adjustment holes.
5. percussion device according to claim 1, which is characterized in that further include:
Two installation slide plates, each installation slide plate are set to the frame top, and can be sliding in the plane on the frame top
Dynamic, the shaft is individually fixed on the two installations slide plate.
6. percussion device according to claim 5, which is characterized in that be respectively arranged with two bearings on each installation slide plate
Support base group, the two bearing support blocks group are respectively used to carry the shaft.
7. percussion device according to claim 6, which is characterized in that the shaft is respectively in the two bearing support blocks group
It is interior to be moved along the axial direction of the shaft；Or the shaft is retractable spindle.
8. percussion device according to claim 1, which is characterized in that two hits arm includes multi arm, multistage
Two alternate arms are detachably connected in arm；Or two hits arm respectively includes upper and lower arms, the lower arm is set to described
In upper arm and can in the upper arm free extension.
9. percussion device according to any one of claims 1 to 6, which is characterized in that the grip part includes being connected with each other
The first link block and the first terminal pad, first link block be connected to the free end of the hits arm, and described first connects
Connecing disk can rotate relative to first link block；
The grip part further includes transiting rod, the second link block interconnected and the second terminal pad, the both ends of the transiting rod
It is separately connected first terminal pad and second link block, and second terminal pad can be relative to second connection
Block rotation；
The grip part further includes upper fixture block and lower fixture block interconnected, and is connected in second terminal pad, for pressing from both sides
Hold the fixed rammer.
10. percussion device according to claim 9, which is characterized in that first link block uses soft elastic material system
At.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710494509.XA CN107144411B (en) | 2017-06-26 | 2017-06-26 | Percussion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710494509.XA CN107144411B (en) | 2017-06-26 | 2017-06-26 | Percussion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107144411A CN107144411A (en) | 2017-09-08 |
| CN107144411B true CN107144411B (en) | 2019-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710494509.XA Active CN107144411B (en) | 2017-06-26 | 2017-06-26 | Percussion device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117168747B (en) * | 2023-11-02 | 2024-06-25 | 南通莱欧电子科技有限公司 | Quality detection system and application method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08136428A (en) * | 1994-11-08 | 1996-05-31 | Hitachi Metals Ltd | Core strength testing device |
| CN1332194C (en) * | 2004-04-07 | 2007-08-15 | 中国科学院金属研究所 | Impacting tester with double pendulum and testing method thereof |
| JP2010091382A (en) * | 2008-10-07 | 2010-04-22 | Honda Motor Co Ltd | Collision-testing device |
| CN203148645U (en) * | 2013-03-22 | 2013-08-21 | 杭州赛特机车技术服务有限公司 | Rearview mirror bump test bed |
| KR20150074983A (en) * | 2013-12-24 | 2015-07-02 | 주식회사 포스코 | Apparatus for evaluating impact physical properties of sheet |
| CN204255616U (en) * | 2014-09-25 | 2015-04-08 | 上海市质量监督检验技术研究院 | A kind of equipment for detecting furniture armrest and handrail pillow quality |
| CN204535948U (en) * | 2015-04-22 | 2015-08-05 | 佛山市沃特测试技术服务有限公司 | A kind of pendulum impact test device |
| CN206177593U (en) * | 2016-10-17 | 2017-05-17 | 上海奥众汽车部件制造有限公司 | Percussion device |
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2017
- 2017-06-26 CN CN201710494509.XA patent/CN107144411B/en active Active
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