CN206727049U - Time-delay mechanism and breaker - Google Patents
Time-delay mechanism and breaker Download PDFInfo
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- CN206727049U CN206727049U CN201720542801.XU CN201720542801U CN206727049U CN 206727049 U CN206727049 U CN 206727049U CN 201720542801 U CN201720542801 U CN 201720542801U CN 206727049 U CN206727049 U CN 206727049U
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- iron core
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- delay mechanism
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Abstract
The utility model provides a kind of time-delay mechanism and breaker, belongs to technical field of electric appliances.The time-delay mechanism is used for breaker, and it includes skeleton, and skeleton has receiving space；Coil, coil are set around outside skeleton；Capacitor combination portion, capacitor combination portion is used for and coils from parallel connection of coils；First iron core, the first iron core are located in receiving space, and the first iron core is located at one end of skeleton and is fixedly connected with skeleton；Second iron core, the second iron core are slidably arranged in receiving space and can be closer or far from the first iron cores.When breaker needs to disconnect, coil is needed to reach certain by electric current, and the electric current increased suddenly is first charged by wire to capacitor combination portion, secondly just to coil power supply, is during which had the regular hour poor, can be played certain time-lag action.It greatly reduces the incidence for dropout of bypassing the immediate leadership, and overall using effect is preferable.The breaker includes the time-delay mechanism, and it has the repertoire of the time-delay mechanism.
Description
Technical field
Technical field of electric appliances is the utility model is related to, in particular to a kind of time-delay mechanism and breaker.
Background technology
Breaker：Can turn on, carry and disjunction normal circuit under the conditions of electric current, also can be in defined improper circuit
Under the conditions of connect, carrying certain time and breaking current a kind of mechanical switch electrical equipment.
Miniature circuit breaker, abbreviation MCB (Micro Circuit Breaker), is during building electrical terminal power distribution equipment is drawn
A kind of most popular terminal protection electrical equipment.Protected for below 125A single-phase, three-phase short circuit, overload, overvoltage etc., bag
Include four kinds of monopole 1P, two pole 2P, three pole 3P, quadrupole 4P etc..
Existing breaker is in distribution line in use, being often arranged to upper and lower level association.Work as short-circuit current
More than this level and upper level or even again when a upper pole, there is randomness to then which rank of action.
In folk power supply circuit, service cable section difference has different D.C. resistances, therefore line length is formed
Line impedance serve certain protective effect, line short fault occurs in user terminal, line impedance limits short-circuit electricity
Flow limiting value.Switch bypass the immediate leadership dropout majority be embodied in this building unit panel switches or entire building panel switches thread off cause it is big
Area has a power failure.
The high occasion of power supply reliability rank (such as factory, data center module, railway, airport), the cable quality used will
Ask also high, the bigger, DC impedance that the cross-section of cable takes is low, occurs that short-circuit current is big, and dropout problem of bypassing the immediate leadership is than more prominent.
Inventor has found that traditional breaker at least has the following disadvantages under study for action：
Dropout problem of bypassing the immediate leadership is more obvious；
Using effect is poor.
Utility model content
The purpose of this utility model is the provision of a kind of time-delay mechanism, improves the deficiencies in the prior art, it can pass through
Capacitor combination portion is set up, when breaker needs to disconnect, coil needs to reach certain by electric current, and the electric current increased suddenly passes through
Wire first charges to capacitor combination portion, secondly just to coil power supply, during which has the regular hour poor, can play certain
Time-lag action.It greatly reduces the incidence for dropout of bypassing the immediate leadership, and overall using effect is preferable.Its is reasonable in design, and market application is latent
Power is huge.
Another object of the present utility model is the provision of a kind of breaker, and it includes time-delay mechanism mentioned above, its
Repertoire with the time-delay mechanism.
What embodiment of the present utility model was realized in：
Embodiment of the present utility model provides a kind of time-delay mechanism, and for breaker, it includes skeleton, and skeleton, which has, to be held
Receive space；Coil, coil are set around outside skeleton；Capacitor combination portion, capacitor combination portion is used for and coils from parallel connection of coils；First iron core, the
One iron core is located in receiving space, and the first iron core is located at one end of skeleton and is fixedly connected with skeleton；Second iron core, the second iron core
It is slidably arranged in receiving space and can be closer or far from the first iron core.
Specifically, the time-delay mechanism can be by setting up capacitor combination portion, when breaker needs to disconnect, coil needs to reach
It is certain that by electric current, the electric current increased suddenly is first charged by wire to capacitor combination portion, secondly just to coil power supply,
Have that the regular hour is poor a period, certain time-lag action can be played.It greatly reduces the incidence for dropout of bypassing the immediate leadership, and integrally makes
It is preferable with effect.Its is reasonable in design, and market application potential is huge.
Optionally, capacitor combination portion includes multiple tie points parallel with one another, multiple tie points in parallel and coil
Parallel connection, the capacitor electrically connected with coil is provided with each tie point.
Optionally, capacitor combination portion includes the second branch road, the second branch road and coils from parallel connection of coils, the second branch road be provided with it is multiple with
The capacitor of coil electrical connection.
Optionally, capacitor combination portion includes multiple 3rd branch roads parallel with one another, multiple 3rd branch roads and coil in parallel
Parallel connection, the branch road of wherein at least one the 3rd are provided with the multiple capacitors electrically connected with coil.
Optionally, time-delay mechanism also includes rectification part, and rectification part is used for the AC conversion of main circuit into direct current
Electricity, and to capacitor combination portion and coil power supply.
Optionally, one end of close first iron core of skeleton is provided with the patchhole connected with receiving space, the second iron core
Including the second core body and extension, extension is connected with the second core body, and the second core body is located in receiving space,
Extension is used to wear patchhole, and one end away from the second core body of extension is provided with abutting part.
Optionally, patchhole is located at the first iron through one end of the first iron core and close first iron core of skeleton, patchhole
The center of core.
Optionally, time-delay mechanism also includes replying part, replys part and is arranged extension, and the one end for replying part abuts the second iron core
Body, the other end for replying part abut the first iron core.
Optionally, two ends of skeleton, which are respectively arranged with, encloses frame, and coil is enclosed positioned at two between frame.
Embodiment of the present utility model additionally provides a kind of breaker, and it includes time-delay mechanism mentioned above, and it has
The repertoire of the time-delay mechanism.
Compared with prior art, the beneficial effect of the utility model embodiment is：
In summary, the time-delay mechanism can be by setting up capacitor combination portion, when breaker needs to disconnect, and coil needs to reach
To certain by electric current, the electric current increased suddenly is first charged by wire to capacitor combination portion, and secondly just coil is supplied
Electricity, during which there is the regular hour poor, certain time-lag action can be played.It greatly reduces the incidence for dropout of bypassing the immediate leadership, whole
Body using effect is preferable.Its is reasonable in design, and market application potential is huge.
Brief description of the drawings
, below will be to required use in embodiment in order to illustrate more clearly of the technical scheme of the utility model embodiment
Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by
Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also
To obtain other related accompanying drawings according to these accompanying drawings.
Fig. 1 is the structural representation for the time-delay mechanism that the utility model embodiment 1 provides；
Fig. 2 is the schematic diagram under the first working condition of the second iron core of the time-delay mechanism shown in Fig. 1；
Fig. 3 is the schematic diagram under second of working condition of the second iron core of the time-delay mechanism shown in Fig. 1；
Fig. 4 is the schematic diagram under the third working condition of the second iron core of the time-delay mechanism shown in Fig. 1；
Fig. 5 is the schematic diagram of the circuit of the time-delay mechanism shown in Fig. 1；
Fig. 6 is the schematic diagram in the first capacitor combination portion shown in Fig. 5；
Fig. 7 is the schematic diagram in second of capacitor combination portion that the utility model embodiment 2 provides；
Fig. 8 is the schematic diagram in the third capacitor combination portion that the utility model embodiment 3 provides；
Fig. 9 is the schematic diagram in the 4th kind of capacitor combination portion that the utility model embodiment 4 provides.
Icon：100- time-delay mechanisms；10- skeletons；101- receiving spaces；102- patchholes；11- encloses frame；20- coils；
30- capacitor combinations portion；31- capacitors；The iron cores of 40- first；The iron cores of 50- second；The core bodies of 51- second；52- extensions；
521- abutting parts；60- rectification parts；70- main circuits；80- replys part.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Generally here described in accompanying drawing and
The component of the utility model embodiment shown can be configured to arrange and design with a variety of.
Therefore, the detailed description of the embodiment of the present utility model to providing in the accompanying drawings is not intended to limit requirement below
The scope of the utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in the utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of the utility model protection.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", " interior ", the finger such as " outer "
The orientation or position relationship shown is based on orientation shown in the drawings or position relationship, or is used to during the utility model product use
The orientation or position relationship often put, it is for only for ease of description the utility model and simplifies description, rather than indicates or imply
Signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this
The limitation of utility model.In addition, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that instruction or hint
Relative importance.
In description of the present utility model, it is also necessary to which explanation, unless otherwise clearly defined and limited, term " are set
Put ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in utility model.
Embodiment 1
Fig. 1-Fig. 4 is refer to, present embodiments provides a kind of time-delay mechanism 100, for breaker, it includes skeleton 10,
Skeleton 10 has receiving space 101；Coil 20, coil 20 are set around outside skeleton 10；Capacitor combination portion 30, capacitor combination portion 30 uses
In in parallel with coil 20；First iron core 40, the first iron core 40 are located in receiving space 101, and the first iron core 40 is located at skeleton 10
One end and it is fixedly connected with skeleton 10；Second iron core 50, the second iron core 50 are slidably arranged in receiving space 101 and can
Closer or far from the first iron core 40.
Explanation is needed exist for, first iron core 40 is fixed relative to skeleton 10, can also be called static iron core,
Second iron core 50 is slidable relative to skeleton 10, can also be called dynamic iron core.
Second iron core 50 includes the second core body 51 and the extension 52 being connected with each other.
It is the state that breaker is in closure shown in Fig. 2, second core body 51 is relatively distant from the first iron core 40.
It is that breaker is in the state for preparing to disconnect, relatively close first iron of second core body 51 shown in Fig. 3
Core 40.
It is that breaker is in the state disconnected shown in Fig. 4, the limit of the second core body 51 is close to the first iron core 40.
Specifically, the time-delay mechanism 100 can be by setting up capacitor combination portion 30, when breaker needs to disconnect, coil 20
Need to reach certain by electric current, the electric current increased suddenly first charges to capacitor combination portion 30 by wire, secondly
Coil 20 is powered, during which there is that the regular hour is poor, certain time-lag action can be played.It greatly reduces dropout of bypassing the immediate leadership
Incidence, overall using effect are preferable.Its is reasonable in design, and market application potential is huge.
Fig. 5 and Fig. 6 are refer to, optionally, time-delay mechanism 100 also includes rectification part 60, and rectification part 60 is used for will be main
The AC conversion of circuit 70 is powered into direct current, and to capacitor combination portion 30 and coil 20.
Rectification part 60 is a fairing, is exactly briefly that will exchange the device that (AC) is converted into direct current (DC).
It has two major functions：First, it is inverse that alternating current (AC) is become into direct current (DC), filtered rear supply load, or supply
Become device；Second, provide charging voltage to battery.Therefore, it plays a part of a charger again simultaneously.
The capacitor combination portion 30 can be a capacitor 31.
Main circuit 70 is powered, and it acts on rectification part 60, and rectification part 60 is by the AC conversion Cheng Zhi of main circuit 70
Stream electricity, and capacitor combination portion 30 and coil 20 are powered.
Coil 20 is powered, and after the first iron core 40 and the magnetization of the second core body 51 in skeleton 10, both have magnetic, the
One iron core 40 and one end magnetic pole being relatively close to each other of the second core body 51 are on the contrary, there is relatively close motion to become for both
Gesture.
When breaker needs to disconnect, the increase of the electric current of main circuit 70, rectification part 60 is by the AC rectification of main circuit 70
Afterwards, first capacitor 31 is charged, after the saturation of capacitor 31, the electric current of coil 20 just increases, and ultimately results in breaker
Tripping mechanism is threaded off.That is need breaker to be disconnected to final dropout, be to have the regular hour poor, avoid its moment from breaking
Open.It can substantially reduce the incidence for dropout of bypassing the immediate leadership.
With reference to Fig. 2, optionally, skeleton 10 is provided with what is connected with receiving space 101 close to one end of the first iron core 40
Patchhole 102, the second iron core 50 include the second core body 51 and extension 52, and extension 52 connects with the second core body 51
Connect, the second core body 51 is located in receiving space 101, and extension 52 is used to wear patchhole 102, extension 52 away from the
One end of two core bodies 51 is provided with abutting part 521.
When being increased to by electric current of coil 20 slides 51 relative skeleton 10 of the second core body, second core body
51 relatively close first iron cores 40 are moved, and extension 52 is slided in patchhole 102, and making abutting part 521, this is supported away from skeleton 10
Socket part 521 acts on tripping mechanism, finally makes its dropout.Its is practical.
Optionally, patchhole 102 is through one end of the first iron core 40 and close first iron core 40 of skeleton 10, patchhole
102 are located at the center of the first iron core 40.
The extension 52 wears patchhole 102, and when making the abutting part 521 with tripping mechanism cooperation, its stress is more concentrated,
Overall structure symmetry is preferable, and using effect is preferable.
Optionally, time-delay mechanism 100 also includes replying part 80, replys part 80 and is arranged extension 52, replys one end of part 80
The second core body 51 is abutted, the other end for replying part 80 abuts the first iron core 40.
The reply part 80 can be spring, or other elastic mechanisms.
When the limit of second core body 51 is close to the first iron core 40, the reply part 80 has restoring force, makes second iron
Core body 51 has the movement tendency away from the first iron core 40, aids in second core body 51 to reset, its is practical.
Optionally, two ends of skeleton 10, which are respectively arranged with, encloses frame 11, and coil 20 is enclosed positioned at two between frame 11.
By enclosing frame 11, coil 20 effectively can be subjected to winding.
A kind of time-delay mechanism 100 provided according to the utility model embodiment, the operation principle of time-delay mechanism 100 are：
Coil 20 is powered, and magnetizes the second core body 51 and the first iron core 40, there is relatively close motion to become for both
Gesture.Second core body 51 in the presence of part 80 is replied, its it is relatively stable positioned at skeleton 10 away from the first iron core 40
One end.
Coil 20 is increased by electric current, the effect of magnetic absorption between the iron core 40 of the second core body 51 and first compared with
To be obvious, the second core body 51 overcomes the restoring force for replying part 80, relatively close first iron core 40, and the second core body 51 exists
While slip, for the abutting part 521 away from skeleton 10, being ultimately applied to tripping mechanism makes its dropout, reaches breaker disconnection
Effect.
When the alternating current in main circuit 70 reaches the carrying current of breaker disconnection, rectification part 60 is whole by the alternating current
Direct current is changed into after stream, because the capacitor 31 is in parallel with coil 20, the direct current is first powered to capacitor 31, capacitor 31
After saturation, just coil 20 is further powered.
The coil 20 is increased by electric current, the second core body 51 is overcome the restoring force for replying part 80, relative to bone
Frame 10 slides and close to the first iron core 40, finally tripping mechanism is threaded off.
It is final poor with the regular hour between disconnecting that breaker needs are disconnected to, and the breaker is not to disconnect moment
's.
If the second core body 51 while slip and tripping mechanism are not threaded off, coil 20 by current reduction,
So that the breaker need not disconnect, the second core body 51 resets under the restoring force effect for replying part 80.
Embodiment 2
Fig. 7 is refer to, the present embodiment also provides a kind of time-delay mechanism 100, and the technical scheme that embodiment 1 describes is equally suitable
For the present embodiment, 1 published technical scheme of embodiment is not repeated to describe.
Specifically, the present embodiment and the difference of embodiment 1 are, capacitor combination portion 30 includes multiple parallel with one another first
Branch road, multiple tie points in parallel are in parallel with coil 20, and the electric capacity electrically connected with coil 20 is provided with each tie point
Device 31.
That is, the capacitor combination portion 30 includes multiple capacitors 31, multiple capacitors 31 be it is parallel with one another, it is whole
When direct current after stream increases, each capacitor 31 is charged respectively, just can be to coil after all saturations of capacitor 31
20 further power supplies.
Need exist for illustrating, the quantity of the tie point in Fig. 7 is three, and in specific implementation, it can also be
Two, four, five or more.
Embodiment 3
Fig. 8 is refer to, the present embodiment also provides a kind of time-delay mechanism 100, and the technical scheme that embodiment 1 describes is equally suitable
For the present embodiment, 1 published technical scheme of embodiment is not repeated to describe.
Specifically, the present embodiment and the difference of embodiment 1 are, capacitor combination portion 30 includes the second branch road, the second branch road
In parallel with coil 20, the second branch road is provided with multiple capacitors 31 electrically connected with coil 20.
That is, the capacitor combination portion 30 includes multiple capacitors 31, multiple capacitors 31 are serially connected, string
As overall in parallel with coil 20 after connection.It is equally reached identical effect.
Need exist for illustrating, the quantity of the capacitor 31 in the second branch road in Fig. 8 is three, specific to implement
In, it can also be for two, four, five or more.
Embodiment 4
Fig. 9 is refer to, the present embodiment also provides a kind of time-delay mechanism 100, and the technical scheme that embodiment 1 describes is equally suitable
For the present embodiment, 1 published technical scheme of embodiment is not repeated to describe.
Specifically, the present embodiment and the difference of embodiment 1 are, capacitor combination portion 30 includes multiple parallel with one another three
Branch road, multiple 3rd branch roads in parallel are in parallel with coil 20, and the branch road of wherein at least one the 3rd is provided with electrically connects with coil 20
Multiple capacitors 31.
That is, the capacitor combination portion 30 includes multiple capacitors 31, multiple capacitors 31 can be serially connected
It is in parallel again afterwards, existing parallel connection in its circuit, also there is series connection.It is equally reached identical effect.
Need exist for illustrating, the 3rd branch road quantity in Fig. 9 is three, in specific implementation, or two,
Four, five or more.
The quantity of capacitor 31 in each 3rd branch road can also be one, two, three or more.Each 3rd
The quantity of capacitor 31 in branch road can not be equal or not etc..
Embodiment 5
The present embodiment also provides a kind of breaker, and it includes time-delay mechanism 100 mentioned above, and it is filled with the delay
Put 100 repertoire.
The structure of time-delay mechanism 100 may be referred to embodiment 1-4.
The breaker also includes tripping mechanism, and the time-delay mechanism 100 links with tripping mechanism so that the breaker, which has, to be prolonged
When the function threaded off.
In summary, the utility model provides a kind of time-delay mechanism 100, and the time-delay mechanism 100 can be by setting up electricity
Hold combination section 30, when breaker needs to disconnect, coil 20 needs to reach certain by electric current, and the electric current increased suddenly is by leading
Line is first charged to capacitor combination portion 30, and secondly just coil 20 is powered, during which there is that the regular hour is poor, can be played certain
Time-lag action.It greatly reduces the incidence for dropout of bypassing the immediate leadership, and overall using effect is preferable.Its is reasonable in design, market application
Have a high potential.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model
Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.
Claims (10)
- A kind of 1. time-delay mechanism, for breaker, it is characterised in that including：Skeleton, the skeleton have receiving space；Coil, the coil are set around outside the skeleton；Capacitor combination portion, the capacitor combination portion are used for and the coils from parallel connection of coils；First iron core, first iron core are located in the receiving space, first iron core be located at one end of the skeleton and It is fixedly connected with the skeleton；Second iron core, second iron core are slidably arranged in the receiving space and can be closer or far from described first Iron core.
- 2. time-delay mechanism according to claim 1, it is characterised in that the capacitor combination portion includes multiple parallel with one another Tie point, multiple tie points in parallel and the coils from parallel connection of coils, be provided with each tie point with it is described The capacitor of coil electrical connection.
- 3. time-delay mechanism according to claim 1, it is characterised in that the capacitor combination portion includes the second branch road, described Second branch road and the coils from parallel connection of coils, second branch road are provided with multiple capacitors electrically connected with the coil.
- 4. time-delay mechanism according to claim 1, it is characterised in that the capacitor combination portion includes multiple parallel with one another 3rd branch road, multiple 3rd branch roads in parallel and the coils from parallel connection of coils, the 3rd branch road described in wherein at least one are provided with The multiple capacitors electrically connected with the coil.
- 5. according to the time-delay mechanism described in claim any one of 1-4, it is characterised in that the time-delay mechanism also includes rectification part Part, the rectification part are used for the AC conversion of main circuit into direct current, and to the capacitor combination portion and the coil Power supply.
- 6. time-delay mechanism according to claim 5, it is characterised in that one end of close first iron core of the skeleton The patchhole connected with the receiving space is provided with, second iron core includes the second core body and extension, described to prolong Stretch part to be connected with second core body, second core body is located in the receiving space, and the extension is used for The patchhole is worn, one end of remote second core body of the extension is provided with abutting part.
- 7. time-delay mechanism according to claim 6, it is characterised in that the patchhole through first iron core with it is described One end of close first iron core of skeleton, the patchhole are located at the center of first iron core.
- 8. time-delay mechanism according to claim 6, it is characterised in that the time-delay mechanism also include reply part, described time Copy is arranged the extension, and described one end for replying part abuts second core body, and the other end for replying part supports Connect first iron core.
- 9. according to the time-delay mechanism described in claim any one of 1-4, it is characterised in that two ends of the skeleton are set respectively It is equipped with and encloses frame, the coil is enclosed described in two between frame.
- 10. a kind of breaker, it is characterised in that including the time-delay mechanism described in claim any one of 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720542801.XU CN206727049U (en) | 2017-05-16 | 2017-05-16 | Time-delay mechanism and breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720542801.XU CN206727049U (en) | 2017-05-16 | 2017-05-16 | Time-delay mechanism and breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206727049U true CN206727049U (en) | 2017-12-08 |
Family
ID=60512827
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720542801.XU Active CN206727049U (en) | 2017-05-16 | 2017-05-16 | Time-delay mechanism and breaker |
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| Country | Link |
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| CN (1) | CN206727049U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022122464A1 (en) * | 2020-12-11 | 2022-06-16 | Siemens Energy Global GmbH & Co. KG | Trip device for a power circuit breaker |
-
2017
- 2017-05-16 CN CN201720542801.XU patent/CN206727049U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022122464A1 (en) * | 2020-12-11 | 2022-06-16 | Siemens Energy Global GmbH & Co. KG | Trip device for a power circuit breaker |
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