CN211857382U - High-protection explosion-proof and intrinsic safety computer - Google Patents
High-protection explosion-proof and intrinsic safety computer Download PDFInfo
- Publication number
- CN211857382U CN211857382U CN202020907152.0U CN202020907152U CN211857382U CN 211857382 U CN211857382 U CN 211857382U CN 202020907152 U CN202020907152 U CN 202020907152U CN 211857382 U CN211857382 U CN 211857382U
- Authority
- CN
- China
- Prior art keywords
- shell
- sleeve
- hole
- spring
- sliding
- 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.)
- Active
Links
Images
Abstract
The utility model provides a high protection flame proof and intrinsic safety type computer, which comprises a display and a mainframe box connected with the display, wherein a first waterproof shell is arranged outside the display, a second waterproof shell is arranged outside the mainframe box, and the first waterproof shell is connected with the second waterproof shell through a connecting shell; the first waterproof shell comprises a first shell, a connecting part fixed on the edge part of the front wall of the first shell and a front door rotatably connected to the front end of the first shell; be provided with first retaining member on the qianmen, seted up the locking groove on connecting portion, the qianmen is fixed through first retaining member cooperation locking groove and connecting portion locking. Utilize above-mentioned utility model can solve the problem of inside easy infiltration of this ampere of type computer under current ore deposit effectively.
Description
Technical Field
The utility model relates to a control instrument technical field, more specifically relates to a high protection flame proof and intrinsic safety type computer.
Background
At present, with the wide application of the coal mine underground automation system, the explosion-proof and intrinsically safe computer is used more and more, other underground equipment (such as a camera, an illuminating lamp and the like) can be controlled by arranging the explosion-proof and intrinsically safe computer underground, however, the explosion-proof and intrinsically safe computer cannot be exposed in a mine for a long time when working due to the fact that special environments (such as heavy moisture and more combustible gas) in the mine exist, and therefore the explosion-proof and intrinsically safe computer needs to be subjected to waterproof treatment and the like. Traditional water repellent sets up the shell of this ampere of type computer into waterproof stainless steel casing, but, only does water repellent to the shell of flame proof concurrently this ampere of type computer, and water-proof effects is relatively poor, often can appear through the phenomenon of the inside infiltration of shell slit to damage flame proof concurrently ampere of type computer.
In view of the above technical problems, a method for effectively preventing external moisture from penetrating into the inside of an intrinsically safe computer is needed.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, the utility model aims at providing a high protection flame proof and intrinsic safety type computer to solve the inside problem of infiltrating water easily of intrinsic safety type computer under current ore deposit.
The embodiment of the utility model provides a high protection flame proof and intrinsic safety type computer, including the display and with the mainframe box that the display links to each other, be provided with first waterproof cover outside the display, be provided with the second waterproof cover outside the mainframe box, first waterproof cover passes through the connecting shell and links to each other with the second waterproof cover; the first waterproof shell comprises a first shell, a connecting part fixed on the edge part of the front wall of the first shell and a front door rotatably connected to the front end of the first shell; the front door is provided with a first locking piece, the connecting part is provided with a locking groove, and the front door is matched with the locking groove through the first locking piece and is locked and fixed with the connecting part.
In addition, the first locking piece preferably comprises an extension rod integrally formed with the front door, a first sleeve is fixed at one end of the extension rod, which is far away from the front door, the bottom of the sleeve is connected with a first spring, a first trapezoidal sliding block is connected at one end of the first spring, which is far away from the bottom of the first sleeve, a trapezoidal sliding groove matched with the first trapezoidal sliding block is formed in the connecting part, and the trapezoidal sliding groove is communicated with the locking groove; and the number of the first and second electrodes,
a button hole is formed in one end, far away from the trapezoidal sliding groove, of the locking groove, and a button shaft is arranged in the button hole; one end of the button shaft is connected with a second trapezoidal sliding block matched with the first trapezoidal sliding block, and the other end of the button shaft extends out of the connecting part through the button hole.
In addition, the preferable structure is that a button seat is connected to one end of the button shaft, which is far away from the second trapezoidal sliding block, a second spring is sleeved on the button shaft, and the second spring is limited between the connecting part and the button seat.
In addition, the preferable structure is that a third spring connected with the connecting part is further arranged in the locking groove, and one end, far away from the connecting part, of the third spring is connected with a top block; and the number of the first and second electrodes,
when the first sleeve is locked in the locking groove, the top block is attached to the side wall of the first sleeve in an extruding mode.
In addition, preferably, the connecting portion is further provided with an accommodating groove communicating with the button hole, and the button holder and the second spring are both retained in the accommodating groove.
In addition, preferably, a weather strip is further interposed at an interface between the front door and the connection portion.
In addition, the second waterproof case preferably includes a second case and a sliding door, and the second case is rotatably connected to the sliding door by a hinge; and the number of the first and second electrodes,
vertical baffles are fixed on two sides of the interior of the second shell, transverse baffles are fixed in the two vertical baffles, the mainframe box is placed on the transverse baffles, a sliding plate is arranged below the transverse baffles, two ends of the sliding plate are slidably connected with the two vertical baffles through sliding grooves, and a keyboard is placed on the sliding plate.
In addition, the preferable structure is that accommodating cavities are formed between two side walls of the second shell and the two vertical baffles, and plate-shaped drying agents are placed in the two accommodating cavities.
In addition, the preferable structure is that a second locking piece is arranged on the front wall of the sliding door, and the second locking piece comprises a second sleeve fixed on the front wall of the sliding door, a pull nail arranged in the sleeve and a fourth spring sleeved on the pull nail; a positioning block is fixed on the pull nail, and the fourth spring is limited between the front wall of the sleeve and the positioning block; and the number of the first and second electrodes,
a first through hole is formed in the front wall of the sleeve, a second through hole corresponding to the first through hole is formed in the sliding door, and a limiting hole corresponding to the second through hole is formed in the second shell; one end of the blind rivet extends to the outside of the sleeve through the first through hole and is connected with a blind nut, and the other end of the blind rivet penetrates through the second through hole and is limited in the limiting hole.
In addition, a waterproof rubber gasket is preferably fixed on the outer edge of the sliding door, and when the sliding door is locked, the waterproof rubber gasket is tightly attached to the second shell; a handle is fixed to an outer wall of the sliding door.
According to the technical scheme, the high-protection flame-proof and intrinsic safety computer provided by the utility model has the advantages that the display and the host of the intrinsic safety computer are provided with the waterproof shell, so that the external moisture can be effectively prevented from permeating into the intrinsic safety computer; in addition, the first waterproof shell is provided with the special first locking piece, so that the first shell can be quickly opened and closed in the first shell, and the working efficiency of adjusting, maintaining and other operations of the display in the first shell by workers is obviously improved on the premise of ensuring water seepage prevention; in addition, the waterproof effect in the second shell can be further improved by arranging the second shell and arranging the corresponding drying agent.
Drawings
Other objects and results of the invention will be more apparent and readily appreciated by reference to the following description taken in conjunction with the accompanying drawings, and as the invention is more fully understood. In the drawings:
FIG. 1 is a front view of a high-protection flame-proof and intrinsically safe computer provided by an embodiment of the utility model;
FIG. 2 is a left side view of the high-protection flame-proof and intrinsically safe computer provided by the embodiment of the utility model;
fig. 3 is a partial enlarged cross-sectional view of a position a in fig. 2 according to an embodiment of the present invention;
fig. 4 is a front view of a second housing according to an embodiment of the present invention;
FIG. 5 is an enlarged view of a portion of a second retaining member in accordance with an embodiment of the present invention;
wherein the reference numerals include: the first casing 11, the front door 111, the extension rod 1111, the connecting portion 112, the sealing strip 113, the trapezoidal sliding groove 114, the first sleeve 115, the first spring 116, the first trapezoidal slider 117, the second casing 12, the limiting hole 122, the sliding door 13, the second locking member 131, the waterproof rubber pad 132, the handle 133, the hinge 134, the pull cap 135, the pull nail 136, the second through hole 1361, the second sleeve 137, the first through hole 1371, the fourth spring 138, the positioning block 139, the connecting casing 14, the button seat 15, the button shaft 151, the second spring 152, the second trapezoidal slider 153, the button hole 154, the locking groove 155, the receiving groove 156, the third spring 157, the top block 158, the main cabinet 16, the plate-shaped desiccant 17, the keyboard 18, the sliding plate 181, the vertical baffle 19, and the horizontal baffle 191.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
For the detailed description the utility model discloses a structure of high protection flame proof and intrinsic safety type computer, it is right to combine the figure below the concrete embodiment of the utility model carries out the detailed description.
Fig. 1 shows a main view structure of a high-protection flame-proof and intrinsically safe computer provided by an embodiment of the utility model; FIG. 2 shows a left view structure of a high-protection flame-proof and intrinsically safe computer provided by the embodiment of the utility model; fig. 3 shows a cross-sectional partial enlarged structure at a position a in fig. 2 according to an embodiment of the present invention.
Combine fig. 1 to fig. 3 to show jointly, the embodiment of the utility model provides a high protection flame proof and intrinsic safe type computer, including the display that is used for the display frame and the mainframe box 16 that links to each other with the display, wherein, be provided with first waterproof cover outside the display, be provided with the second waterproof cover outside mainframe box 16, first waterproof cover links to each other with the second waterproof cover through connecting shell 14.
The first waterproof case includes a first housing 11, a connecting portion 112 fixed to an edge portion of a front wall of the first housing 11, and a front door 111 rotatably connected to a front end of the first housing 11 (for example, a lower end of the front door 111 is rotatably connected to a lower end of the connecting portion 112 through a hinge 134), the front door 111 is provided with a first locking member, the connecting portion 112 is provided with a locking groove 155, and the front door 111 is locked and fixed to the connecting portion 112 through the first locking member matching with the locking groove 155.
Specifically, the first locking member comprises an extension rod 1111 integrally formed with the front door 111, a first sleeve 115 is fixed at one end of the extension rod 1111, which is far away from the front door 111, a first spring 116 is connected to the bottom of the sleeve, a first trapezoidal slider 117 is connected to one end of the first spring 116, which is far away from the bottom of the first sleeve 115, a trapezoidal sliding slot 114 matched with the first trapezoidal slider 117 is formed in the connecting portion 112, and the trapezoidal sliding slot 114 is communicated with the locking slot 155; a button hole 154 is formed at one end of the locking groove 155 away from the trapezoidal sliding groove 114, and a button shaft 151 is provided in the button hole 154; a second trapezoidal slider adapted to the first trapezoidal slider 117 is connected to one end of the button shaft 151, and the other end of the button shaft 151 extends out of the connection portion 112 through a button hole 154.
In practical application, when the front door 111 is required to be used to close the first housing 11, only the front door 111 needs to be pressed, at this time, since the extension part corresponds to the trapezoidal sliding groove 114 in position, the first trapezoidal slider 117 can be attached to and move with the trapezoidal sliding groove 114, and along with the movement of the first trapezoidal slider 117, the first spring 116 contracts, when the first trapezoidal slider 117 enters the locking groove 155, the first spring 116 is released, the first trapezoidal slider 117 can be attached to the second trapezoidal slider 153 by being limited in the locking groove 155, and at this time, the front door 111 can be locked.
When the front door 111 needs to be opened, the button shaft 151 is pressed from the rear of the connecting portion 112, at this time, pressure is generated between the second trapezoidal slider 153 and the first trapezoidal slider 117, the first slider is slowly accommodated in the first sleeve 115 along with the movement of the second trapezoidal slider 153, and the front door 111 is opened by pulling the front door 111 outwards. Through designing above-mentioned one set of locking mechanism by oneself, can realize opening fast and closing of first shell under the prerequisite of guaranteeing 11 prevention of seepage waters of first casing, show the work efficiency that improves the operation such as staff adjust, maintain to its inside display.
In addition, in order to realize the automatic restoration of the button shaft 151, the button holder 15 is connected to one end of the button shaft 151 away from the second trapezoidal slider 153, a second spring 152 is sleeved on the button shaft 151, and the second spring 152 is limited between the connecting portion 112 and the button holder 15. When the front door 111 is opened, the button seat 15 is loosened, so that the button shaft 151 can be quickly restored to be ready for the next closing of the front door 111.
In addition, in order to further improve the practicability of the whole device, a third spring 157 connected with the connecting part 112 is also arranged in the locking groove 155, and one end of the third spring 157, which is far away from the connecting part 112, is connected with a top block 158; also, when the first sleeve 115 is locked within the locking groove 155, the top block 158 presses against the side wall of the first sleeve 115. When the front door 111 needs to be opened, as the first trapezoidal slider 117 is accommodated in the first sleeve 115, the extension part on the front door 111 and the first sleeve 115 will pop out of the trapezoidal sliding groove 114 under the pushing force of the third spring 157, so that the front door 111 is automatically opened, and the practicability of the whole device can be obviously improved.
In addition, in order to prevent the button seat from being exposed to the outside and causing the phenomenon of accidental operation and triggering, a receiving groove 156 communicated with the button hole 154 may be further formed on the connecting portion 112, and both the button seat and the second spring 152 are limited and received in the receiving groove 156.
In addition, in order to further improve the sealing performance of the first housing 11, hemispherical grooves (not shown) are formed at the interface between the front door 111 and the connecting portion 112, and a sealing strip 113 is interposed between the two hemispherical grooves.
In a preferred embodiment of the present invention, fig. 4 illustrates a front view structure of a second shell 12 provided for an embodiment of the present invention, which is shown together with fig. 1 to 4, the second waterproof shell includes the second shell 12 and a sliding door 13, and the second shell 12 is rotatably connected with the sliding door 13 through a hinge 134; vertical baffles 19 are fixed to both sides of the inside of the second casing 12, horizontal baffles 191 are fixed to the inside of the two vertical baffles 19, the main cabinet 16 is placed on the horizontal baffles 191, a sliding plate 181 is provided below the horizontal baffles 191, both ends of the sliding plate 181 are slidably connected to the two vertical baffles 19 through sliding grooves, and a keyboard 18 is placed on the sliding plate 181.
Can carry out the overall arrangement to second casing 12 inside through setting up horizontal baffle 191 and vertical baffle 19 to form between parts such as mainframe box 16, keyboard 18 and second casing 12 lateral wall and hold the chamber, realize parts such as mainframe box 16, keyboard 18 and external secondary through holding the chamber and keep apart, further improve the water-proof effects of parts such as mainframe box 16, keyboard 18.
In addition, when the accommodating cavities are formed between the two side walls of the second shell 12 and the two vertical baffle plates 19, the plate-shaped drying agents 17 are placed in the two accommodating cavities, the internal environment of the second shell 12 is dried through the drying agents, and the waterproof effect of devices inside the second shell 12 can be obviously improved.
Fig. 5 shows a partial enlarged structure of the second locking member 131 provided in the embodiment of the present invention, and as shown in fig. 1 to 5, the second locking member 131 is disposed on the front wall of the sliding door 13, and the second locking member 131 includes a second sleeve 137 fixed on the front wall of the sliding door 13, a blind rivet 136 disposed in the sleeve, and a fourth spring 138 sleeved on the blind rivet 136; wherein, a positioning block 139 is fixed on the rivet 136, and a fourth spring 138 is limited between the front wall of the sleeve and the positioning block 139; a first through hole 1371 is formed in the front wall of the sleeve, a second through hole 1361 corresponding to the first through hole 1371 is formed in the sliding door 13, and a limit hole 122 corresponding to the second through hole 1361 is formed in the second housing 12; one end of the blind rivet 136 extends out of the sleeve through the first through hole 1371 and is connected with the blind nut 135, and the other end of the blind rivet 136 penetrates through the second through hole 1361 and is limited in the limiting hole 122.
In actual operation, when the sliding door 13 needs to be locked, the sliding door 13 is closed only by pulling the nut 135 outward, and when the sliding door 13 is closed, the pulling nut 135 is released, and one end of the pull stud 136, which is far away from the pulling nut 135, penetrates through the second through hole 1361 and is limited in the limiting hole 122 under the action of the fourth spring 138, so that the sliding door 13 is locked. When the sliding door 13 needs to be opened, the sliding door 13 can be opened only by pulling the pull cap 135. Through for sliding door 13 designs second retaining member 131 by oneself, can realize opening fast and closing of sliding door 13, be convenient for operate keyboard 18 and mainframe box 16 in the second shell, show improvement work efficiency.
Specifically, in order to improve the water seepage prevention effect of the second housing 12, a waterproof rubber gasket 132 may be fixed on the outer edge of the sliding door 13, and when the sliding door 13 is locked, the waterproof rubber gasket 132 is tightly attached to the second housing 12; also, in order to facilitate the operation of the sliding door 13, a handle 133 may be fixed to an outer wall of the sliding door 13.
As described above with reference to the drawings, the high-protection flame-proof and intrinsically safe computer according to the present invention is provided by way of example. However, it should be understood by those skilled in the art that various improvements can be made to the high-protection flame-proof and intrinsically safe computer provided by the present invention without departing from the contents of the present invention. Therefore, the scope of the present invention should be determined by the content of the appended claims.
Claims (9)
1. A high-protection explosion-proof and intrinsic safety computer comprises a display and a mainframe box connected with the display, and is characterized in that a first waterproof shell is arranged outside the display, a second waterproof shell is arranged outside the mainframe box, and the first waterproof shell is connected with the second waterproof shell through a connecting shell; wherein the content of the first and second substances,
the first waterproof shell comprises a first shell, a connecting part fixed on the edge part of the front wall of the first shell and a front door rotatably connected to the front end of the first shell; the front door is provided with a first locking piece, the connecting part is provided with a locking groove, and the front door is matched with the locking groove through the first locking piece and is locked and fixed with the connecting part.
2. The high-protection flameproof and intrinsically safe computer of claim 1,
the first locking piece comprises an extension rod integrally formed with the front door, a first sleeve is fixed at one end, away from the front door, of the extension rod, the bottom of the sleeve is connected with a first spring, one end, away from the bottom of the first sleeve, of the first spring is connected with a first trapezoidal sliding block, a trapezoidal sliding groove matched with the first trapezoidal sliding block is formed in the connecting portion, and the trapezoidal sliding groove is communicated with the locking groove; and the number of the first and second electrodes,
a button hole is formed in one end, far away from the trapezoidal sliding groove, of the locking groove, and a button shaft is arranged in the button hole; one end of the button shaft is connected with a second trapezoidal sliding block matched with the first trapezoidal sliding block, and the other end of the button shaft extends out of the connecting part through the button hole.
3. The high-protection flameproof and intrinsically safe computer of claim 2,
the button shaft is sleeved with a second spring, and the second spring is limited between the connecting part and the button seat.
4. The high-protection flameproof and intrinsically safe computer of claim 3,
a third spring connected with the connecting part is further arranged in the locking groove, and one end, far away from the connecting part, of the third spring is connected with a top block; and the number of the first and second electrodes,
when the first sleeve is locked in the locking groove, the top block is attached to the side wall of the first sleeve in an extruding mode.
5. The high-protection flameproof and intrinsically safe computer of claim 4,
an accommodating groove communicated with the button hole is further formed in the connecting portion, and the button seat and the second spring are both contained in the accommodating groove in a limiting mode.
6. The high-protection flameproof and intrinsically safe computer of claim 5,
the second waterproof shell comprises a second shell and a sliding door, and the second shell is rotatably connected with the sliding door through a hinge; and the number of the first and second electrodes,
vertical baffles are fixed on two sides of the interior of the second shell, transverse baffles are fixed in the two vertical baffles, the mainframe box is placed on the transverse baffles, a sliding plate is arranged below the transverse baffles, two ends of the sliding plate are slidably connected with the two vertical baffles through sliding grooves, and a keyboard is placed on the sliding plate.
7. The high-protection flameproof and intrinsically safe computer of claim 6,
and two accommodating cavities are formed between two side walls of the second shell and the two vertical baffles, and plate-shaped drying agents are placed in the two accommodating cavities.
8. The high-protection flameproof and intrinsically safe computer of claim 7,
a second locking piece is arranged on the front wall of the sliding door and comprises a second sleeve fixed on the front wall of the sliding door, a pull nail arranged in the sleeve and a fourth spring sleeved on the pull nail; a positioning block is fixed on the pull nail, and the fourth spring is limited between the front wall of the sleeve and the positioning block; and the number of the first and second electrodes,
a first through hole is formed in the front wall of the sleeve, a second through hole corresponding to the first through hole is formed in the sliding door, and a limiting hole corresponding to the second through hole is formed in the second shell; one end of the blind rivet extends to the outside of the sleeve through the first through hole and is connected with a blind nut, and the other end of the blind rivet penetrates through the second through hole and is limited in the limiting hole.
9. The high-protection flameproof and intrinsically safe computer of any one of claims 6 to 8,
a waterproof rubber pad is fixed on the outer edge of the sliding door, and when the sliding door is locked, the waterproof rubber pad is tightly attached to the second shell; a handle is fixed to an outer wall of the sliding door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020907152.0U CN211857382U (en) | 2020-05-26 | 2020-05-26 | High-protection explosion-proof and intrinsic safety computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020907152.0U CN211857382U (en) | 2020-05-26 | 2020-05-26 | High-protection explosion-proof and intrinsic safety computer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211857382U true CN211857382U (en) | 2020-11-03 |
Family
ID=73236427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020907152.0U Active CN211857382U (en) | 2020-05-26 | 2020-05-26 | High-protection explosion-proof and intrinsic safety computer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211857382U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113929103A (en) * | 2020-12-30 | 2022-01-14 | 连云港威晟硅材料有限公司 | Preparation method and application of nano-scale spherical silicon micro powder |
-
2020
- 2020-05-26 CN CN202020907152.0U patent/CN211857382U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113929103A (en) * | 2020-12-30 | 2022-01-14 | 连云港威晟硅材料有限公司 | Preparation method and application of nano-scale spherical silicon micro powder |
| CN113929103B (en) * | 2020-12-30 | 2022-06-14 | 连云港威晟硅材料有限公司 | Preparation method and application of nanoscale spherical silicon micropowder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211857382U (en) | High-protection explosion-proof and intrinsic safety computer | |
| US10306962B2 (en) | Protective housing and cover mechanism thereof | |
| EP1965471A2 (en) | Waterproof enclosure for electric devices | |
| CN201601164U (en) | Locking and holding mechanism of battery cover | |
| PT1115956E (en) | DOOR TERMINAL WITH MOUNTING PLATE | |
| CN209964047U (en) | Intercom | |
| CN107910215B (en) | A kind of explosion-proof tank for capableing of door opening electrical outage | |
| CN205634568U (en) | Mining elevator of fleing | |
| KR101279872B1 (en) | Digital door lock cover | |
| PL346856A1 (en) | Door terminal comprising a cover for the emergency button | |
| CN210575608U (en) | Switch protection device for mining electrical equipment | |
| CA2677416A1 (en) | Rubber while-in-use weatherproof cover | |
| TR200001663T1 (en) | Locking device that can be sealed with lead. | |
| CN216033814U (en) | High waterproof nature's high-power direct current rifle that charges | |
| TW200635145A (en) | Plug connection tap | |
| CN209369642U (en) | A kind of no cold bridge combined labyrinth and carbon gland type positive/negative-pressure maintenance door | |
| CN209115019U (en) | A kind of shield door facilitating unlatching | |
| CN217009927U (en) | Door body structure of explosion-proof mining 5G control cabinet | |
| CN218670832U (en) | Explosion-proof electric high-pressure regulating valve with protective structure | |
| CN208539209U (en) | Power supply box | |
| CN218254976U (en) | Nail casket dustproof nail shooting tool | |
| CN218381758U (en) | Sampling sealing port structure | |
| CN205355547U (en) | Switch board with observation window | |
| CN210270694U (en) | A locking device and portable computer for portable computer | |
| CN219316984U (en) | Mining air door electric control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |