CN206697335U - Switching mode power supply transformer and switching power supply - Google Patents
Switching mode power supply transformer and switching power supply Download PDFInfo
- Publication number
- CN206697335U CN206697335U CN201720540388.3U CN201720540388U CN206697335U CN 206697335 U CN206697335 U CN 206697335U CN 201720540388 U CN201720540388 U CN 201720540388U CN 206697335 U CN206697335 U CN 206697335U
- Authority
- CN
- China
- Prior art keywords
- power supply
- plate
- pin
- mode power
- switching mode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Dc-Dc Converters (AREA)
Abstract
It the utility model is related to transformer technology field, more particularly to a kind of switching mode power supply transformer and Switching Power Supply.Switching mode power supply transformer includes transformer body, connecting plate and support；Transformer body includes shell；Shell includes the first side wall, the first top plate and the first bottom plate；Connecting plate includes second sidewall, the second top plate and the second bottom plate；Second sidewall includes the first side plate, the second side plate, the 3rd side plate and the 4th side plate；The first side wall is connected with the second top plate；First side plate is provided with pin, and pin has length；The output lead of transformer body is connected with pin；The first end of support is connected with the first side plate, and the second end is used to be detachably connected with circuit board.Switching Power Supply includes circuit board and switching mode power supply transformer.The utility model provides a kind of switching mode power supply transformer and Switching Power Supply, solves effective usable floor area technical problem that switching mode power supply transformer present in prior art reduces circuit board.
Description
Technical field
Transformer technology field is the utility model is related to, more particularly, to a kind of switching mode power supply transformer and Switching Power Supply.
Background technology
Switching mode power supply transformer is a kind of power transformer for adding switching tube, while having transformer function, also
Have concurrently to be dielectrically separated from and form self-excitation (or separate excitation) formula together with power transmitting function, switching mode power supply transformer and switching tube
Interval oscillator, so as to which input direct voltage is modulated into a high-frequency pulse voltage, play energy transfer and conversion effect.
In reverse excitation circuit, when switching tube turns on, transformer converts electrical current into magnetic field energy and stored, when switching tube ends then
Discharge, in positive activation type circuit, when switching tube turns on, input voltage directly to load supply and is storing up energy storage
In energy inductance, when switching tube ends, then afterflow is carried out from energy storage inductor and transmitted to load, the DC voltage of input is converted into
Required various low pressure, switching mode power supply transformer are commonly used in the occasion that Switching Power Supply etc. is related to high-frequency circuit.
Shown in Figure 1, Fig. 1 is the structural representation of the switching mode power supply transformer of prior art；Switching mode power supply transformer
Including base 1 ', transformer body 2 ' is provided with base 1 ', transformer body 2 ' includes the first shell, the inside of the first shell
Coil outside magnetic core and magnetic core is set, and side of the base away from the first shell is provided with pin 3 '；Wherein, transformer body 2 '
Output lead is connected with pin 3 ', and pin is used to be connected with circuit board.
Shown in Figure 2, Fig. 2 is the structural representation of Switching Power Supply in the prior art；Switching Power Supply includes second housing,
Second housing is internally provided with circuit board 4 ', and switching mode power supply transformer 5 ' and other electronic components are connected with circuit board.Switch
After the pin of power transformer 5 ' is connected with circuit board 4 ', the size of base directly determines that switching mode power supply transformer takes circuit
The area of plate, in Fig. 2, switching mode power supply transformer almost occupies the half of the usable floor area of circuit board so that circuit board has
Imitate usable floor area to reduce, the availability for causing circuit board is low.
Therefore, the application provides a kind of new switching mode power supply transformer and Switching Power Supply regarding to the issue above.
Utility model content
The purpose of this utility model is to provide a kind of switching mode power supply transformer, to solve to switch present in prior art
Power transformer reduces effective usable floor area technical problem of circuit board.
The purpose of this utility model, which also resides in, provides a kind of Switching Power Supply, further to solve to open present in prior art
Close effective usable floor area technical problem that power transformer reduces circuit board.
Based on above-mentioned first purpose, the utility model provides a kind of switching mode power supply transformer, including transformer body, connection
Plate and support；
The transformer body includes shell；The shell includes the first side wall and is arranged at the both ends of the first side wall
The first top plate and the first bottom plate；
The connecting plate includes second sidewall and is arranged at second top plate and the second bottom plate at the both ends of the second sidewall；
The second sidewall includes mutually enclosing the first side plate connect, the second side plate, the 3rd side plate and the 4th side plate successively, its
In, first side plate and the 3rd side plate are corresponding；
The one side of the first side wall is detachably connected with second top plate；
One side of first side plate away from the 3rd side plate is provided with pin, and the pin has length；
The output lead of the transformer body electrically connects with the pin；
Along the short transverse of the support, the support has corresponding first end and the second end；The first end with
One side connection of first side plate away from the 3rd side plate, second end is used to be detachably connected with circuit board.
Further, the perisporium of pin described in the utility model is provided with insulating barrier.
Further, pin described in the utility model has multiple；
Along the length direction of first side plate, multiple pins are arranged at intervals.
Further, it is provided with heat sink on the second bottom plate of connecting plate described in the utility model.
Further, the plate face of heat sink described in the utility model is vertical with the second bottom plate of the connecting plate；
The heat sink has multiple, and is arranged at intervals between multiple heat sinks.
Further, the output lead of transformer body described in the utility model is set around the pin close to the connection
The side of plate；
And the output lead welds with the pin.
Further, the material of pin described in the utility model is copper or iron.
Further, the material of support described in the utility model is bakelite.
Based on above-mentioned second purpose, the utility model provides a kind of Switching Power Supply, including circuit board and described switch electricity
Source transformer；
The pin of the switching mode power supply transformer and the circuit board electrical connection.
Further, the second end of support described in the utility model is provided with connecting hole；
The screwed hole corresponding with the connecting hole is provided with the circuit board；
The connecting hole and the screwed hole are bolted.
In use, pin is connected with circuit board, because pin has length, this length can make pin through surrounding its
His electronic component so that transformer body and connecting plate are located at the top of other electronic components, take the solid on circuit board top
Space, the usable floor area without taking circuit board.Further, since pin is thinner, have can not undertake transformer body and
The problem of connecting plate, therefore, switching mode power supply transformer provided by the utility model, are provided with support, and support is used to support transformer
Body and connecting plate, to avoid pin from bearing the gravity of transformer body and connecting plate.In summary, it is provided by the utility model
Switching mode power supply transformer causes transformer body and connecting plate is located at the top of other electronic components, takes the vertical of circuit board top
Body space, the usable floor area without taking circuit board, reduces the occupancy to board area, increases the effective of circuit board
Usable floor area, improve the area availability of circuit board.And because the gap between circuit board of transformer body increases
Greatly, the radiating of transformer body is also beneficial to, extends the service life of switching mode power supply transformer.
Switching Power Supply provided by the utility model, including circuit board and described switching mode power supply transformer；So that transformer
Body and connecting plate are located at the top of other electronic components, the solid space on circuit board top are taken, without taking circuit board
Usable floor area, reduce the occupancy to board area, increase effective usable floor area of circuit board, improve circuit board
Area availability.And due to the increase of the gap between circuit board of transformer body, it is also beneficial to transformer body
Radiating, the service life of switching mode power supply transformer is extended, meanwhile, the service life of Switching Power Supply is extended, practicality is extremely strong.
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 of switching mode power supply transformer in the prior art；
Fig. 2 is the structural representation of Switching Power Supply in the prior art；
Fig. 3 is the schematic diagram for the switching mode power supply transformer that the utility model embodiment provides；
Fig. 4 is the schematic diagram at another visual angle for the switching mode power supply transformer that the utility model embodiment provides.
Icon：1 '-base；2 '-transformer body；3 '-pin；4 '-circuit board；5 '-switching mode power supply transformer；
1- transformer bodies；11- output leads；2- connecting plates；The top plates of 21- second；3- supports；4- pins；5- heat sinks；
6- connecting holes.
Embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is the utility model part of the embodiment, rather than whole embodiments.Based on the embodiment in the utility model, sheet
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only
Described for the ease of description the utility model and simplifying, rather than instruction or imply signified device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
Fig. 1 is the structural representation of switching mode power supply transformer in the prior art；Fig. 2 is the knot of Switching Power Supply in the prior art
Structure schematic diagram；Fig. 3 is the schematic diagram for the switching mode power supply transformer that the utility model embodiment provides；Fig. 4 is that the utility model is real
The schematic diagram at another visual angle of the switching mode power supply transformer of example offer is provided.Wherein, in order to more clearly show opening for prior art
The structure in powered-down source, the top cover of Switching Power Supply is not shown in Fig. 2.
Embodiment one
Referring to shown in Fig. 3-Fig. 4, the present embodiment provides a kind of switching mode power supply transformer, including transformer body 1, connecting plate
2 and support 3；
The transformer body 1 includes shell；The shell includes the first side wall and is arranged at the two of the first side wall
First top plate and the first bottom plate at end；
The connecting plate 2 includes second sidewall and is arranged at the second top plate 21 and second bottom at the both ends of the second sidewall
Plate；
The second sidewall includes mutually enclosing the first side plate connect, the second side plate, the 3rd side plate and the 4th side plate successively, its
In, first side plate and the 3rd side plate are corresponding；
The one side of the first side wall is detachably connected with second top plate 21；
One side of first side plate away from the 3rd side plate is provided with pin 4, and the pin 4 has length；
The output lead 11 of the transformer body 1 electrically connects with the pin 4；
Along the short transverse of the support 3, the support 3 has corresponding first end and the second end；The first end
It is connected with one side of first side plate away from the 3rd side plate, second end is used to be detachably connected with circuit board.
Alternatively, the side wall is detachably connected with second top plate 21, for example, be connected through a screw thread, snapping, riveting,
The modes such as clamping.
Alternatively, shown in Figure 3, the first side wall is in cube.
Alternatively, the first end is detachably connected or consolidated with one side of first side plate away from the 3rd side plate
Fixed connection, is detachably connected and is for example connected through a screw thread；It is fixedly connected and for example welds.Second end is used for removable with circuit board
Unload connection, for example, be connected through a screw thread, clamping, the mode such as snapping.
In use, pin 4 is connected with circuit board, because pin 4 has length, this length can make pin 4 through week
Enclose other electronic components so that transformer body 1 and connecting plate 2 are located at the top of other electronic components, take circuit board top
Solid space, without take circuit board usable floor area.Further, since pin 4 is thinner, transformer can not be undertaken by having
The problem of body 1 and connecting plate 2, therefore, the switching mode power supply transformer that the present embodiment provides, are provided with support 3, and support 3 is used for branch
Transformer body 1 and connecting plate 2 are supportted, to avoid pin 4 from bearing the gravity of transformer body 1 and connecting plate 2.
In summary, the switching mode power supply transformer that the present embodiment provides causes transformer body 1 and connecting plate 2 to be located at other
The top of electronic component, the solid space on circuit board top is taken, the usable floor area without taking circuit board, reduced to electricity
The occupancy of road plate suqare, effective usable floor area of circuit board is increased, improve the area availability of circuit board.And due to
The increase of the gap between circuit board of transformer body 1, is also beneficial to the radiating of transformer body 1, extends Switching Power Supply
The service life of transformer.
Preferably, the perisporium of the pin 4 is provided with insulating barrier (not shown).
For example, insulating barrier is the insulating tape for the perisporium for being set around pin 4.
The perisporium of the pin 4 is provided with insulating barrier, avoids producing larger localized capacitance between adjacent leads 4, influences
The normal work of switching mode power supply transformer and circuit board.
Preferably, shown in Figure 3, the pin 4 has multiple；
Along the length direction of first side plate, multiple pins 4 are arranged at intervals.
It is further preferred that multiple pins 4 are set in several rows of row.
Along the length direction of first side plate, multiple pins 4 are arranged at intervals, when transformer is connected with circuit board
When, the area that transformer takes circuit board is further reduced, effective usable floor area of circuit board is increased, improves circuit board
Area availability.
Preferably, it is shown in Figure 4, it is provided with heat sink 5 on the second bottom plate of the connecting plate 2.
The work heat production of transformer body 1 is conducted to heat sink 5 by connecting plate 2, because heat sink 5 increases connecting plate 2
With the contact area of air, thus the radiating rate of transformer body 1 is improved, extend switching mode power supply transformer uses the longevity
Life, high practicability and marketing.
Preferably, the plate face of the heat sink 5 is vertical with the second bottom plate of the connecting plate 2；
The heat sink 5 has multiple, and is arranged at intervals between multiple heat sinks 5.
The plate face of heat sink 5 is vertical with the second bottom plate of the connecting plate 2, that is to say, that heat sink 5 does not interfere with connection
Heat is expelled directly out on plate 2.
Heat sink 5 has multiple, and is arranged at intervals between multiple heat sinks 5, further increases connecting plate 2 and air
Contact area, thus improve the radiating rate of transformer body 1, extend the service life of switching mode power supply transformer.
Alternatively, the output lead 11 of the transformer body 1 is set around the pin 4 close to the one of the connecting plate 2
Side；
And the output lead 11 welds with the pin 4.
The output lead 11 of transformer body 1 is electrically connected with the pin 4, such as output lead 11 is wound on pin 4；
Preferably, output lead 11 is wound in after pin 4, is further fixedly connected by soldering with pin 4, is strengthened the firm of connection
Property.
It should be noted that output lead 11 can also be connected by other means with pin 4, such as directly be welded, or
Wire is connected with person's pin 4, wire electrically connects with output lead 11.
Alternatively, the material of the pin 4 is copper or iron.
Preferably, the outer surface of pin 4 is tin plating, silver-plated or gold-plated, improves the ageing resistace of pin 4, and enhancing is drawn
The electric conductivity of pin 4, and it is easy to the welding of pin 4 and circuit board.
Preferably, the material of the support 3 is bakelite.
Bakelite is called phenoplasts, has higher mechanical strength, good insulating properties and heat resistance.
Alternatively, the material of support 3 can also be other insulating materials, such as PE (polyethylene), PP (polypropylene), PVC
(polyvinyl chloride) etc..
Embodiment two
Embodiment two provides a kind of Switching Power Supply, and the Switching Power Supply includes the Switching Power Supply transformation described in embodiment one
Device, the technical characteristic of the switching mode power supply transformer disclosed in embodiment one are also applied for the embodiment, and embodiment one is published
The technical characteristic of switching mode power supply transformer is not repeated to describe.The embodiment of the Switching Power Supply is carried out below in conjunction with the accompanying drawings
It is further to describe in detail.
To save length, the improvement feature of the embodiment is equally embodied in Fig. 3-Fig. 4, therefore, with reference to Fig. 3-Fig. 4 to this
The scheme of embodiment illustrates.
Referring to the Switching Power Supply that shown in Fig. 3-Fig. 4, the present embodiment provides, including circuit board and described Switching Power Supply transformation
Device；
The pin 4 of the switching mode power supply transformer and the circuit board electrical connection.
In use, pin 4 is connected with circuit board, because pin 4 has length, this length can make pin 4 through week
Enclose other electronic components so that transformer body 1 and connecting plate 2 are located at the top of other electronic components, take circuit board top
Solid space, without take circuit board usable floor area.Because pin 4 is thinner, transformer body 1 can not be undertaken by having
The problem of with connecting plate 2, therefore, the switching mode power supply transformer that the present embodiment provides, are provided with support 3, and support 3, which is used to support, to be become
Depressor body 1 and connecting plate 2, to avoid pin 4 from bearing the gravity of transformer body 1 and connecting plate 2.
In summary, the Switching Power Supply that the present embodiment provides, the transformer inside Switching Power Supply is described Switching Power Supply
Transformer so that transformer body 1 and connecting plate 2 are located at the top of other electronic components, and the solid for taking circuit board top is empty
Between, the usable floor area without taking circuit board, the occupancy to board area is reduced, increases effective use of circuit board
Area, improve the area availability of circuit board.And because the gap between circuit board of transformer body 1 increases,
The radiating of transformer body 1 is also beneficial to, extends the service life of switching mode power supply transformer, meanwhile, extend Switching Power Supply
Service life, practicality is extremely strong.
Alternatively, shown in Figure 3, the second end of the support 3 is provided with connecting hole 6；
The screwed hole corresponding with the connecting hole 6 is provided with the circuit board；
The connecting hole 6 and the screwed hole are bolted.
It should be noted that the second end of support 3 and circuit board can also be detachably connected by other means, such as detain
Connect, the mode such as clamping.
Switching Power Supply described in the present embodiment has the advantages of switching mode power supply transformer described in embodiment one, and the advantage exists
Describe in detail in embodiment one, be not repeated herein.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (10)
1. a kind of switching mode power supply transformer, it is characterised in that including transformer body, connecting plate and support；
The transformer body includes shell；The shell includes the first side wall and is arranged at the of the both ends of the first side wall
One top plate and the first bottom plate；
The connecting plate includes second sidewall and is arranged at second top plate and the second bottom plate at the both ends of the second sidewall；
The second sidewall includes mutually enclosing the first side plate connect, the second side plate, the 3rd side plate and the 4th side plate successively, wherein, institute
State the first side plate and the 3rd side plate is corresponding；
The one side of the first side wall is detachably connected with second top plate；
One side of first side plate away from the 3rd side plate is provided with pin, and the pin has length；
The output lead of the transformer body electrically connects with the pin；
Along the short transverse of the support, the support has corresponding first end and the second end；The first end with it is described
One side connection of first side plate away from the 3rd side plate, second end is used to be detachably connected with circuit board.
2. switching mode power supply transformer according to claim 1, it is characterised in that the perisporium of the pin is provided with insulation
Layer.
3. switching mode power supply transformer according to claim 1, it is characterised in that the pin has multiple；
Along the length direction of first side plate, multiple pins are arranged at intervals.
4. switching mode power supply transformer according to claim 1, it is characterised in that set on the second bottom plate of the connecting plate
There is heat sink.
5. switching mode power supply transformer according to claim 4, it is characterised in that the plate face of the heat sink and the connection
Second bottom plate of plate is vertical；
The heat sink has multiple, and is arranged at intervals between multiple heat sinks.
6. switching mode power supply transformer according to claim 1, it is characterised in that the output lead of the transformer body around
Located at the pin close to the side of the connecting plate；
And the output lead welds with the pin.
7. switching mode power supply transformer according to claim 1, it is characterised in that the material of the pin is copper or iron.
8. switching mode power supply transformer according to claim 1, it is characterised in that the material of the support is bakelite.
9. a kind of Switching Power Supply, it is characterised in that the Switching Power Supply including circuit board and as described in claim any one of 1-8 becomes
Depressor；
The pin of the switching mode power supply transformer and the circuit board electrical connection.
10. Switching Power Supply according to claim 9, it is characterised in that the second end of the support is provided with connecting hole；
The screwed hole corresponding with the connecting hole is provided with the circuit board；
The connecting hole and the screwed hole are bolted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720540388.3U CN206697335U (en) | 2017-05-15 | 2017-05-15 | Switching mode power supply transformer and switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720540388.3U CN206697335U (en) | 2017-05-15 | 2017-05-15 | Switching mode power supply transformer and switching power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206697335U true CN206697335U (en) | 2017-12-01 |
Family
ID=60449061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720540388.3U Expired - Fee Related CN206697335U (en) | 2017-05-15 | 2017-05-15 | Switching mode power supply transformer and switching power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206697335U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110324961A (en) * | 2019-06-30 | 2019-10-11 | 赛尔富电子有限公司 | One kind can interconnection switches power supply |
-
2017
- 2017-05-15 CN CN201720540388.3U patent/CN206697335U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110324961A (en) * | 2019-06-30 | 2019-10-11 | 赛尔富电子有限公司 | One kind can interconnection switches power supply |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI338435B (en) | ||
| CN202384178U (en) | Capacitor structure with internal laminated bus bars | |
| CN208834879U (en) | A kind of integrated flat-plate transformer of magnetic | |
| CN206834239U (en) | Intelligent battery protection board, intelligent battery and moveable platform | |
| CN103222177B (en) | Power conversion device | |
| CN105281541B (en) | Power electronic converter secondary power circuit integral type copper bar | |
| CN206697335U (en) | Switching mode power supply transformer and switching power supply | |
| CN104465082A (en) | Low-inductance power capacitor | |
| CN202018886U (en) | Composite film medium filter capacitor | |
| CN102867647B (en) | A kind of can the direct current support capacitor of effective absorbing high-frequency harmonic wave | |
| CN201829300U (en) | Small-sized planar common mode choke | |
| CN203871186U (en) | Novel high-frequency aluminum electrolytic capacitor | |
| CN217361336U (en) | Low-voltage foil coil outgoing line structure for double-split transformer | |
| CN208655427U (en) | A kind of automobile capacitor | |
| CN217655771U (en) | Direct current supports condenser | |
| CN108597873B (en) | High-capacity film capacitor | |
| CN206595158U (en) | Low impedance at high frequency electrochemical capacitor | |
| CN210668105U (en) | Ceramic capacitor | |
| CN210896990U (en) | Direct current capacitor packaging structure | |
| CN204792432U (en) | Low -loss high power capacity ware | |
| CN207217306U (en) | A kind of plug-in type high-pressure impulse capacitor | |
| CN209374277U (en) | The high frequency capacitor of homogeneous current distribution | |
| CN204216786U (en) | Many pins low clearance chip type power module | |
| CN105703631B (en) | Gradient amplifier power cell, gradient amplifier and magnetic resonance imaging system | |
| CN109088483B (en) | Loop coil reinforcing coupling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171201 Termination date: 20200515 |