CN86101921A - Micro motor - Google Patents
Micro motor Download PDFInfo
- Publication number
- CN86101921A CN86101921A CN86101921.0A CN86101921A CN86101921A CN 86101921 A CN86101921 A CN 86101921A CN 86101921 A CN86101921 A CN 86101921A CN 86101921 A CN86101921 A CN 86101921A
- Authority
- CN
- China
- Prior art keywords
- shielding box
- elastomeric element
- heat
- metal spring
- micro motor
- 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 - Lifetime
Links
- 239000002184 metal Substances 0.000 claims abstract description 32
- 230000017525 heat dissipation Effects 0.000 claims abstract description 19
- 229920001971 elastomer Polymers 0.000 claims abstract description 11
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims 1
- 238000009792 diffusion process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/33—Drive circuits, e.g. power electronics
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
- H02K9/223—Heat bridges
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/40—Structural association with grounding devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0201—Thermal arrangements, e.g. for cooling, heating or preventing overheating
- H05K1/0203—Cooling of mounted components
- H05K1/0204—Cooling of mounted components using means for thermal conduction connection in the thickness direction of the substrate
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2211/00—Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components
- H02K2211/03—Machines characterised by circuit boards, e.g. pcb
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/03—Conductive materials
- H05K2201/0302—Properties and characteristics in general
- H05K2201/0311—Metallic part with specific elastic properties, e.g. bent piece of metal as electrical contact
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10166—Transistor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10227—Other objects, e.g. metallic pieces
- H05K2201/10265—Metallic coils or springs, e.g. as part of a connection element
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10227—Other objects, e.g. metallic pieces
- H05K2201/10416—Metallic blocks or heatsinks completely inserted in a PCB
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Motor Or Generator Cooling System (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Be installed on a micro motor in the shielding box with motor itself, has the printed circuit board (PCB) in the room in shielding box, one control circuit is housed as the control motor on it, and has a such structure, the elastomeric element of a heat conduction made from metal spring or rubber for example, the mode that contacts with shielding box with the heat dissipation device of an integrated circuit in elastomeric element bottom line and the control circuit disposes, so that the heat that produces in the integrated circuit can be diffused on the shielding box through elastomeric element.
Description
A kind of micro motor of relate generally to of the present invention, particularly a kind of micro motor, in the one shielding box, have a control circuit is arranged in the room in a motor and the shielding box, the elastomeric element of a heat conduction wherein, the mode that contacts with shielding box with the heat dissipation device of an integrated circuit in elastomeric element bottom line and the control circuit disposes, so that make the heat energy diffusion that produces in the integrated circuit, thereby, make motor make small-sized and cheapness.
Usually, one is used for for example micro motor of tape recorder, has a motor itself in shielding box and a control circuit (for example in shielding box in the room) rotation as the control motor.Control circuit in so a kind of micro motor is by by utilizing integrated circuit and it being contained in miniaturization control circuit on the printed circuit board (PCB), makes it more and more do smallly.A problem aspect adopting these circuit elements of integrated circuit miniaturization is how to be diffused in the heat that produces in the integrated circuit effectively.
In the micro motor of conventional pattern, expect as the wide variety of devices that in integrated circuit, increases thermal diffusion effect, for example install one in conjunction with the printed circuit board (PCB) of integrated circuit in the shielding box outside, or adopt one to have the metallic plate of a high thermal diffusion effect as printed circuit board (PCB).Yet fitting printed circuit board might not cause the miniaturization of motor in shielding box outside, and adopts the printed circuit board (PCB) of a metal may increase the cost of material.
The present invention wishes to address these problems.
First purpose of the present invention, provide with motor itself and be installed on a micro motor in the shielding box, has the printed circuit board (PCB) in the room in shielding box, one control circuit is housed as the control motor on it, and has a such structure, the elastomeric element of a heat conduction made from metal spring or rubber for example, the mode that contacts with shielding box with the heat dissipation device of an integrated circuit in elastomeric element bottom line and the control circuit disposes, so that make the heat that produces in the integrated circuit can diffuse to shielding box through elastomeric element.
Second purpose of the present invention provides a micro motor, has such structure, and the spring of a metal is as the elastomeric element of heat conduction, and the cover of a metal spring provides by form a through hole on a printed circuit board (PCB) and a rubber vibration spacer; The position of the cover of metal spring conforms to the heat dissipation device of integrated circuit, and the periphery of metal spring is to be fit to contact with heat dissipation device with shielding box cover.
The 3rd purpose of the present invention provides a micro motor, has such structure, and metal spring flexibly contacts with heat dissipation device with shielding box at its two terminal surface.
The 4th purpose of the present invention provides a micro motor, has such structure, and the elastic rubber material of a conduction replaces metal spring as elastomeric element, and is flexibly to contact with heat dissipation device with shielding box.
The 5th purpose of the present invention provides a micro motor, has such structure, need be with the elastomeric element and the shielding box electrical isolation of conduction and heat conduction, and an electric insulation thin slice, for example the thin slice of plastics is inserted in the middle of both.
These and other purposes of the present invention and characteristics can more clearly understand from following narration and accompanying drawing.
Fig. 1 one helps to illustrate the cross sectional side view of the basic structure of implementing the present invention's one micro motor.
Fig. 2 (A) and (B) be the sketch that helps to illustrate the first embodiment of the present invention.
Fig. 3 is a sketch that helps to illustrate the second embodiment of the present invention.
Below, the present invention narrates with reference to the accompanying drawings. In the drawings, reference numerals 1 relates to a motor itself; 2 is shielding boxs; 2 ' be a shielding box cover; 3 is printed circuit board (PCB)s; 4 and 4 ' be the rubber vibration spacer; 5 is an integrated circuit (IC); The heat dissipation device of the 6th, IC5; 7 is IC lead-in wires; 8 and 10 is metal springs; The 9th, the cover of metal spring.
Fig. 1 is the basic structure that the present invention's one micro motor is implemented in expression. Motor itself 1 is to install In shielding box 2; Fenestra for shielding box 2 is with shielding box cover 2 ' covering. Be mounted in for the printed circuit board (PCB) 3 that makes motor dimension little, be equipped with the control circuit that comprises capacitor, integrated circuit etc. in the room of motor itself 1 and shielding box cover 2 ' between the two. Rubber vibration spacer 4 and 4 ', be to prevent that motor itself 1 and printed circuit board (PCB) 3 from moving in shielding box 2 the insides.
Because printed circuit board (PCB) 3 is by shielding box 2 and shielding box cover 2 ' encirclement (as shown in Figure 1), must effectively spread the particularly heat of IC5 of the control circuit element that is installed on the printed circuit 3. The present invention constructs like this, so that permission printed circuit board (PCB) 3 is installed in the shielding box 2 and the heat among the IC5 spreads effectively, constructs as shown in Figure 1.
Fig. 2 is a sketch that helps to illustrate the first embodiment of the present invention. Fig. 2 (A) is the micro motor shown in Fig. 1, in the situation of shielding box cover 2 ' and rubber vibration spacer 4 ' remove, and a front elevation of getting along the A-A line among Fig. 1. Fig. 2 (B) be the part of the motor that the B-B line is got in Fig. 2 (A) an amplification profile diagram (rubber vibration spacer 4 ' and the situation of shielding box cover 2 ' installation under).
At Fig. 2 (A) with among first embodiment (B), the cover 9 of the metal spring of metal spring 8 wherein is installed, by at printed circuit board (PCB) 3 and rubber vibration spacer 4 ' form a through hole to provide. The position of the cover 9 of metal spring conforms to the position of the heat dissipation device 6 of IC5. Being installed in the metal spring 8 in the cover 9 of metal spring, is to make with a kind of conducting metal with good heat conductivity. The outside diameter of metal spring 8 is to make at least greater than shielding box cover 2 ' and heat dissipation device 6 gap (being represented by an arrow P) between the two in free state. Therefore, metal spring 8 is to install in so a kind of mode, and metal spring 8 is flexibly with shielding box cover 2 ' both contact with heat dissipation device 6. As a result, the heat that produces among the IC5, be from heat dissipation device 6 through metal spring 8, be sent to shielding box cover 2 ' with further to shielding box 2, and by the shielding box cover 2 with big thermal diffusion area ' and shielding box 2 both so effectively spread. Metal spring 8 is not only played the part of the role that heat transmits, and serves as an earthing or grounding means because of its electrical conductivity. Need especially in this respect electrical isolation metal spring 8 and shielding box cover 2 ', an electric insulation thin slice, a plastic tab for example, can be inserted in metal spring 8 and shielding box cover 2 ' both in the middle of.
The second embodiment of the present invention shown in Fig. 3 has such as Fig. 2 (A) and the same structure of first embodiment (B) basically. That is, although at Fig. 2 (A) with among first embodiment (B), the periphery of metal spring 8 and shielding box cover 2 ' contact with heat dissipation device 6, but in second embodiment shown in Figure 3, be consist of 8 liang of terminal surfaces of metal spring flexibly with shielding box cover 2 ' contact with heat dissipation device 6. The effect of second embodiment be with Fig. 2 (A) and first embodiment (B) similar.
As Fig. 2 (A) and (B) and first and second embodiment as shown in Fig. 3, make in the above description.Yet the present invention is not limited to these, and has good heat conductivity, for example conduction, elastic caoutchouc can adopt, and replaces metal spring, as the device that transmits the heat that produces among the IC5.
As mentioned above, the present invention becomes the micro motor that a miniature dimensions may be provided, wherein the printed circuit board (PCB) of a combined with circuit control circuit is mounted in the shielding box the inside, and the elastomeric element of heat energy through having good electrical and heat conductivity that IC produces inside shielding box is sent to the shielding box with big thermal diffusion area and spreads.Elastomeric element not only has the ground connection effect, and helps cost to reduce, because the cheap printed circuit board (PCB) that can adopt phenol and other synthetic resin to make, because printed circuit board (PCB) itself need not spread the heat that produces among the IC.
Claims (5)
1, a micro motor has one and is installed on motor itself and in the shielding box printed circuit board (PCB) as the control circuit of controlling motor is housed, this printed circuit board (PCB) is installed in the interior room of said shielding box, and an elastomeric element that it is characterized in that having heat conductivity is to dispose in so a kind of mode, said elastomeric element bottom line contacts with said shielding box with an integrated circuit heat dissipation device in the said control circuit, so that the heat that produces in the said integrated circuit is diffused on the said shielding box through said elastomeric element.
2, a micro motor of stipulating by claim 1, it is characterized in that adopting a metal spring as said elastomeric element with heat conductivity, and the cover that is used as a metal spring of accommodating said metal spring provides by forming a through hole on a said printed circuit board (PCB) and the rubber vibration spacer, be configured in the position that conforms to said integrated circuit heat dissipation device, and be so constructed and make the periphery of said metal spring contact with said heat dissipation device with a shielding box cover.
3,, it is characterized in that said metal spring is configured so that its two terminal surface flexibly contacts with said heat dissipation device with said shielding box cover by a micro motor of claim 2 regulation.
4, a micro motor of stipulating by claim 1, it is characterized in that adopting conductive elastic component as having the said elastomeric element of heat conductivity, and be so constructed so that said conductive elastic component flexibly contacts with said heat dissipation device and with the rubber vibration spacer with said shielding box cover.
5, a micro motor of stipulating by claim 1, when it is characterized in that if desired the said conduction of electrical isolation and heat conduction elastomeric element and said shielding box cover, one electric insulation thin slice, for example a plastic tab is to insert in the middle of the elastomeric element and said shielding box cover of said conduction and heat conduction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985049410U JPH0526936Y2 (en) | 1985-04-03 | 1985-04-03 | |
| JP49410/85 | 1985-04-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86101921A true CN86101921A (en) | 1986-10-08 |
| CN1017852B CN1017852B (en) | 1992-08-12 |
Family
ID=12830282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86101921A Expired CN1017852B (en) | 1985-04-03 | 1986-03-22 | Miniature motor |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPH0526936Y2 (en) |
| KR (2) | KR860008638A (en) |
| CN (1) | CN1017852B (en) |
| GB (1) | GB2174253B (en) |
| HK (1) | HK35991A (en) |
| SG (1) | SG80791G (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101783539A (en) * | 2010-03-19 | 2010-07-21 | 南京远航车辆驱动技术发展有限公司 | Coaxial centrally-mounted driving assembly for electric vehicle with built-in controller |
| CN102729259A (en) * | 2011-04-14 | 2012-10-17 | 精工爱普生株式会社 | Robot |
| CN105052019A (en) * | 2013-02-14 | 2015-11-11 | 斯佩尔汽车有限公司 | Electrical machine |
| CN111283657A (en) * | 2018-12-06 | 2020-06-16 | 台达电子工业股份有限公司 | Robot mechanism |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3642724A1 (en) * | 1986-12-13 | 1988-06-23 | Grundfos Int | ELECTRIC MOTOR WITH A FREQUENCY CONVERTER TO CONTROL THE MOTOR OPERATING SIZES |
| DE3842588A1 (en) * | 1988-12-17 | 1990-06-21 | Mulfingen Elektrobau Ebm | COLLECTORLESS OUTDOOR ROTOR MOTOR WITH SEMICONDUCTOR COOLING ARRANGEMENT |
| DE9006924U1 (en) * | 1989-07-11 | 1990-08-23 | Brose Fahrzeugteile GmbH & Co KG, 8630 Coburg | Electric motor window lifter |
| GB2251522A (en) * | 1990-12-07 | 1992-07-08 | Ist Lab Ltd | An electric motor |
| DE4231784A1 (en) * | 1991-06-22 | 1994-03-24 | Teves Gmbh Alfred | Electrically-driven hydraulic pump - cools control stage for collectorless electric motor by hydraulic fluid handled by pump |
| US5686769A (en) * | 1995-05-26 | 1997-11-11 | Eastman Kodak Company | Method of coil mounting for maximum heat transfer in brushless DC motors |
| DE19624145A1 (en) * | 1996-06-18 | 1998-01-08 | Wilo Gmbh | Electric motor |
| FR2821497B1 (en) * | 2001-02-27 | 2004-07-16 | Bosch Gmbh Robert | ELECTRIC DRIVE, PARTICULARLY WINDSCREEN WIPER DRIVE |
| DE10130950A1 (en) * | 2001-06-27 | 2003-01-23 | Behr Gmbh & Co | electric motor |
| JP4992287B2 (en) * | 2006-04-28 | 2012-08-08 | 日本電産株式会社 | motor |
| DE102006050067A1 (en) * | 2006-10-24 | 2008-05-08 | Siemens Ag | Electromotive actuator |
| DE102009037985A1 (en) * | 2009-08-20 | 2011-03-03 | Siemens Aktiengesellschaft | Intelligent drive unit |
| DE102009053472A1 (en) * | 2009-11-16 | 2011-06-09 | Siemens Aktiengesellschaft | Electronic assembly and method of making the same |
| JP6346422B2 (en) * | 2012-11-08 | 2018-06-20 | 日本電産サーボ株式会社 | motor |
| JP6320104B2 (en) * | 2014-03-24 | 2018-05-09 | Ｇｋｎドライブラインジャパン株式会社 | Driving force transmission device and vehicle equipped with driving force transmission device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5316109B2 (en) * | 1973-09-13 | 1978-05-30 | ||
| JPS5316109U (en) * | 1976-07-22 | 1978-02-10 |
-
1985
- 1985-04-03 JP JP1985049410U patent/JPH0526936Y2/ja not_active Expired - Lifetime
-
1986
- 1986-03-22 CN CN86101921A patent/CN1017852B/en not_active Expired
- 1986-03-27 GB GB08607805A patent/GB2174253B/en not_active Expired
- 1986-03-28 KR KR1019860002340A patent/KR860008638A/en not_active Application Discontinuation
-
1990
- 1990-02-27 KR KR2019900002148U patent/KR900003398Y1/en not_active IP Right Cessation
-
1991
- 1991-05-09 HK HK359/91A patent/HK35991A/en not_active IP Right Cessation
- 1991-10-05 SG SG807/91A patent/SG80791G/en unknown
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101783539A (en) * | 2010-03-19 | 2010-07-21 | 南京远航车辆驱动技术发展有限公司 | Coaxial centrally-mounted driving assembly for electric vehicle with built-in controller |
| CN102729259A (en) * | 2011-04-14 | 2012-10-17 | 精工爱普生株式会社 | Robot |
| CN105052019A (en) * | 2013-02-14 | 2015-11-11 | 斯佩尔汽车有限公司 | Electrical machine |
| CN105052019B (en) * | 2013-02-14 | 2018-08-10 | 斯佩尔汽车有限公司 | Electric rotating machine |
| CN111283657A (en) * | 2018-12-06 | 2020-06-16 | 台达电子工业股份有限公司 | Robot mechanism |
| CN111283657B (en) * | 2018-12-06 | 2021-12-24 | 台达电子工业股份有限公司 | Robot mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2174253A (en) | 1986-10-29 |
| SG80791G (en) | 1991-11-15 |
| GB8607805D0 (en) | 1986-04-30 |
| JPH0526936Y2 (en) | 1993-07-08 |
| GB2174253B (en) | 1988-10-12 |
| CN1017852B (en) | 1992-08-12 |
| KR860008638A (en) | 1986-11-17 |
| JPS61165068U (en) | 1986-10-13 |
| HK35991A (en) | 1991-05-17 |
| KR900003398Y1 (en) | 1990-04-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |