CN218419764U - Water path system for dish washing machine and dish washing machine - Google Patents
Water path system for dish washing machine and dish washing machine Download PDFInfo
- Publication number
- CN218419764U CN218419764U CN202221558512.6U CN202221558512U CN218419764U CN 218419764 U CN218419764 U CN 218419764U CN 202221558512 U CN202221558512 U CN 202221558512U CN 218419764 U CN218419764 U CN 218419764U
- Authority
- CN
- China
- Prior art keywords
- boss
- extending edge
- extension
- edge
- groove
- 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 belongs to the technical field of domestic appliance, specifically provide a waterway system for dish washer. For solving the unreasonable extravagant problem in space that leads to of current dish washer water piping system internals space arrangement, the utility model provides a water piping system for dish washer, including leading water pipe, solid fixed ring, mounting and spray arm, through setting up first boss, second boss and first step hole and second step hole in the mounting, make the protruding section of leading water pipe go deep into behind the first step hole with second step jogged joint. Therefore, the utility model discloses can realize that leading water pipe, solid fixed ring, mounting and spray arm reduce the occupation in space as far as possible when connecting, solve current dish washer water route system internals space arrangement unreasonable problem that leads to the space waste.
Description
Technical Field
The utility model belongs to the technical field of domestic appliance, specifically provide a waterway system and dish washer for dish washer.
Background
With the increasing of living standard of people, the dish washing machine has become one of the common household appliances in people's homes gradually, greatly facilitate people's daily life, generally, the waterway system of the dish washing machine includes the leading water pipe, fixing device and spray arm, leading water pipe and spray arm are connected together directly through the fixing device, but in this kind of structural design, because the irrational of part design, often lead to the size of following the peak of leading water pipe to the minimum of spray arm to be bigger than normal, make the inner bag be used for washing the volume of bowls and chopsticks diminish, and the area of the sliding friction surface of spray arm and leading water pipe is little, make spray arm in rotatory in-process because the sliding friction surface's design is not enough to lead to its rotation unstability.
In order to improve this situation, a new waterway system for a dishwasher and a dishwasher are required to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, namely solve the problems of inner container space waste and unstable rotation of the spray arm caused by unreasonable space arrangement of internal parts of the waterway system of the existing dish washer, the utility model provides a waterway system for the dish washer, which comprises a water conduit, a fixing ring, a fixing piece and the spray arm;
a first extending edge is arranged on the outer side surface of the water conduit, a convex section is arranged at the end part from the first extending edge to the water conduit, a second extending edge is also arranged on the side surface of the first extending edge close to the convex section, and a third extending edge is also arranged on the side surface of the second extending edge far away from the convex section;
the fixing ring is provided with an inward extending edge facing the inner side to form a first through hole, the inner side of the fixing ring is provided with a clamping head, the second extending edge penetrates into the fixing ring, and the third extending edge is arranged between the clamping head and the inward extending edge;
the fixing piece comprises a first boss and a second boss arranged below the first boss, a first step hole is formed in the inner side of the first boss, a second step hole is formed in the inner side of the second boss, and the first step hole is communicated with the second step hole; the inner side wall of the second extending edge is abutted against the outer side wall of the first boss, and the convex section is connected with the second step hole after penetrating into the first step hole;
the spray arm is fixedly arranged on the outer side wall of the second boss.
In the above-mentioned specific implementation manner of the waterway system for the dishwasher, the lower surface of the first boss is flush with the lower surface of the third extended edge, the inner extended edge further includes a folded edge protrusion and a sealing ring connected to the inner side of the folded edge protrusion, and the sealing ring is arranged between the lower surface of the first boss and the lower surface of the third extended edge, so as to seal the outer side wall of the first boss and the inner side wall of the second extended edge.
In the above-mentioned specific embodiment of the waterway system for the dishwasher, the cross section of the sealing ring is in a groove shape, a first groove side of the groove-shaped sealing ring abuts against the lower surface of the first boss, and a second groove side abuts against the lower surface of the third extended side.
In the above-mentioned specific implementation manner of the waterway system for the dishwasher, the lower surface of the third extending edge is further provided with a protrusion, and correspondingly, the top surface of the second groove edge is further provided with a U-shaped groove, and the protrusion is inserted into the U-shaped groove.
In the above-mentioned embodiment of the waterway system for the dishwasher, a plurality of protruding blocks are further provided on the inner sidewall of the second extension, and the inner sidewall of the second extension abuts against the outer sidewall of the first boss through the protruding blocks.
In the above embodiment of the waterway system for the dishwasher, a first gap is further provided between the third extended edge and the inner side wall of the fixing ring; and/or the like and/or,
a fourth extending edge is further extended from the outer side of the first extending edge, and a second gap is further formed between the lower surface of the fourth extending edge and the upper surface of the fixing ring.
In the above-mentioned water route system for dish washer's embodiment, be provided with the grafting arch on the inside wall of the bellying pipe of spray arm, correspondingly the lateral wall of second boss is provided with the grafting recess, the spray arm grafting is fixed the lateral wall of second boss.
In the above-described embodiment of the waterway system for the dishwasher, the outer sidewall of the boss tube of the spray arm is inserted into the first through hole.
In the above-mentioned embodiment of the waterway system for the dishwasher, a reinforcing rib is further provided at an inner side of the fixing ring.
In the above-mentioned embodiment of the waterway system for the dishwasher, the dishwasher is provided with the waterway system for the dishwasher of any one of the above-mentioned technical solutions.
Under the condition of adopting the technical scheme, the first boss, the second boss, the first step hole and the second step hole are arranged on the fixing piece, so that the structure of the convex section on the water guide pipe can be connected with the second step hole after penetrating into the first step hole, the installation of the water guide pipe and the spraying arm is realized, the structure of the water path system of the existing dish washing machine is flattened by the scheme, and the size of the inner container of the dish washing machine for washing bowls and chopsticks is ensured to be large enough.
Meanwhile, due to the fact that the protruding section is designed, the groove surrounded by the protruding section, the first extending edge and the second extending edge is formed, the inner side wall of the second extending edge is abutted to the outer side wall of the first boss, the area of a main friction area between the protruding section and the second extending edge is larger than that of a conventional scheme that the first extending edge is flush with the end portion of the protruding section (the design without the groove), the size of axial friction is longer, and therefore the connecting structure of the spray arm and the water guide pipe in the relative rotation process is more stable.
Drawings
Embodiments of the dishwasher of the present invention will now be described with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of the overall structure of a dishwasher according to the present invention;
FIG. 2 is a schematic view of an upper sprayer of the dishwasher of the present invention;
FIG. 3 is a cross-sectional view of the upper sprayer of FIG. 2 taken along line B-B;
FIG. 4 is an enlarged view of a portion of the seal ring, wherein FIG. 4 is at A in FIG. 3;
fig. 5a is a schematic structural view of the water conduit of the present invention;
FIG. 5b is the structural diagram of the raised blocks on the second flanged inner wall of the penstock.
List of reference numerals:
1-a dishwasher;
11-upper sprayer; 111-a spray arm; 1111-a boss tube; 11111-plug projection; 12-a fixation device; 121-a fixing ring; 1211-card connector; 122-a fixing member; 1221-a first boss; 1222-a second boss; 12221-a plug groove; 1223-a first stepped bore; 1224 — a second stepped bore; 123-inner extending edge; 1231-hem raised; 1232-seal ring; 12321-first slot edge; 12322-second slot edge; 123221-U-shaped groove; 124-a first via; 125-a first gap; 126-a second gap; 13-a water conduit; 131-a first extension; 132-a convex section; 133-a second extension; 1331-raised blocks; 134-third extension; 1341-bumps; 135-fourth extension; 14-back to the penstock; 15-lower sprayer; 16-drainage filtering device.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, and it will be understood by those skilled in the art that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications.
It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on those shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and the like are to be construed broadly and include, for example, fixed connections, detachable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The following describes embodiments of the present invention.
Referring first to fig. 1, the components of the dishwasher 1 of the present invention will be described.
As shown in fig. 1, the dishwasher 1 of the present invention includes an upper sprayer 11, a fixing device 12, a water conduit 13, a back water conduit 14, a lower sprayer 15 and a drainage filtering device 16, and the solution of the present invention is a design for the fixed connection of the upper sprayer 11 and the water conduit 13, and the following detailed description will be made on this part.
Referring next to fig. 2 and 3, the upper sprayer 11, the water conduit 13, and the fixing device 12 will be described.
As shown in fig. 2 and 3, fig. 2 is a schematic view of the upper sprayer 11 of the dishwasher 1 of the present invention, wherein a B-B cross section of the upper sprayer 11 is made at the axial center of the upper sprayer 11, the B-B cross section is as shown in fig. 3, the structure of the upper water conduit 13 in fig. 3 is described first, a first extension 131 is provided on the outer side surface of the right side of the water conduit 13, a convex section 132 is provided below the first extension 131 at the end of the right side of the water conduit 13, a second extension 133 is further provided on the side surface of the first extension 131 close to the convex section 132, i.e., the lower side surface of the first extension 131, a third extension 134 is provided on the side surface of the second extension 133 away from the convex section 132, i.e., the lower portion of the side surface of the second extension 133, a fourth extension 135 is provided on the outer side of the first extension 131, i.e., the upper portion of the right side surface of the second extension 133, wherein the water conduit 13, the first extension 131, the second extension 133, the third extension 134, the fourth extension 135, the connection fixing member 135 and the water conduit 13 are described above the whole water conduit 13, and the fixing structure described above the water conduit 13.
With continuing reference to fig. 3, the lower portion of fig. 3 is a related structure of the upper spray 11, the upper spray 11 includes a spray arm 111, a protruding pipe 1111 is disposed on the upper side of the spray arm 111, and an inserting protrusion 11111 is disposed on the inner side wall of the protruding pipe 1111, the above description is complete for the related structure of the upper spray 11 and the water conduit 13, and the fixing device 12 and the fixing manner between the two will be described below.
Referring to fig. 3, a fixing device 12 is disposed between the water conduit 13 and the upper sprayer 11, the fixing device 12 includes a fixing ring 121 and a fixing member 122, in fig. 3, the projecting n-shaped member on the rightmost side is the fixing ring 121, the fixing ring 121 is provided with a bayonet joint 1211 facing to the inside (i.e., on the left side in the figure) and surrounded by a second extending edge 133, a third extending edge 134 and a fourth extending edge 135, the bayonet joint 1211 is clamped on the upper surface of the third extending edge 134, the fixing ring 121 is further provided with a reinforcing rib (not shown) on the inside, an inner extending edge 123 extends on the inside of the fixing ring 121, and the inner extending edge 123 is disposed on the lower side of the third extending edge 134, so that the third extending edge 134 is clamped between the bayonet joint 1211 and the inner extending edge 123. An aperture exists between the inner extending edge 123 and the spray arm 111, the aperture is a first through hole 124, and the protruding pipe 1111 on the spray arm 111 is arranged in the first through hole 124.
Finally, the fixing member 122 is expanded, and referring to fig. 3, the fixing member 122 is a one-piece member disposed at the left side of the second extending edge 133 and the lower side of the first extending edge 131, the fixing member 122 includes a first boss 1221 disposed at the left side of the first extending edge 131 and a second boss 1222 disposed below the first boss 1221, wherein an outer sidewall of the first boss 1221 abuts against an inner sidewall of the second extending edge 133, and a lower sidewall of the first boss 1221 abuts against an upper sidewall of the inner extending edge 123. A plug-in groove 12221 is further provided on an outer side wall of the second boss 1222, and a plug-in protrusion 11111 on the boss 1111 of the spray arm 111 is inserted into the plug-in groove 12221 of the second boss 1222. A first step hole 1223 is provided inside the first step, a second step hole 1224 is provided inside the second boss 1222, the first step hole 1223 communicates with the second step hole 1224, and the protruding section 132 penetrates the first step hole 1223 and then connects to the second step hole 1224.
Heretofore, the utility model discloses a main technical scheme has introduced, the utility model discloses a lateral wall and the second of first boss 1221 prolong the inside wall looks butt of limit 133, set up joint 1211 in the inboard of solid fixed ring 121, the lower surface of joint 1211 and the third last surface contact who prolongs limit 134, the third sets up including prolonging limit 123 that prolongs limit 134's downside contact simultaneously, then the lower lateral wall of first boss 1221 also is held by interior continuation limit 123, through this kind spacing, make fixing device 12 can realize the joint on leading water pipe 13 to can rotate around leading water pipe 13.
The most important invention of the scheme is that the structure of the raised section 132 on the water conduit 13 can be connected with the second step hole 1224 after penetrating into the first step hole 1223 by arranging the first boss 1221, the second boss 1222, the first step hole 1223 and the second step hole 1224 on the fixing member 122, so that the water conduit 13 and the spray arm 111 can be installed, and the raised section 132 is designed, namely a groove surrounded by the raised section 132, the first extending edge 131 and the second extending edge 133 is formed, so that the structure of the water path system of the existing dishwasher 1 is flattened, and the size of the inner container of the dishwasher 1 for washing bowls and chopsticks is ensured to be large enough.
Similarly, due to the design of the protruding section 132, that is, the groove surrounded by the protruding section 132, the first extending edge 131, and the second extending edge 133 is formed, and the inner side wall of the second extending edge 133 abuts against the outer side wall of the first boss 1221, the area of the main friction area between the two is larger than that of the conventional scheme that the first extending edge 131 is flush with the end of the protruding section 132 (the design without the groove), and the size of axial friction is longer, so that the connection structure of the spray arm 111 and the water conduit 13 in the relative rotation process is more stable.
In addition, the first through hole 124 surrounded by the inner extension edge 123 and the second boss 1222 provides a space for accommodating the protruding tube 1111, further reduces the height of the installation of the waterway system, and enhances the flat design.
The above description of the first embodiment of the present invention has been made clear, and the preferred embodiments of the present invention are described next.
In a preferred embodiment, the inner flange 123 includes a flange protrusion 1231 and a sealing ring 1232 connected to the inner side of the flange protrusion 1231, as shown in fig. 4, the cross section of the sealing ring 1232 is recessed, the recessed sealing ring 1232 includes a first groove 12321 on the left side and a second groove 12322 on the right side, the upper surface of the first groove 12321 abuts against the lower surface of the first boss 1221, the top surface of the second groove 12322 is further provided with a U-shaped groove 123221, the lower surface of the third flange 134 is further provided with a protrusion 1341, the protrusion 1341 is inserted into the U-shaped groove 123221, the sealing ring 1232 is disposed between the lower surface of the first boss 1221 and the lower surface of the third flange 134, and the lower surface of the first boss 1221 and the lower surface of the third flange 134 are flush.
The embodiment of the sealing ring 1232 on the inner extending edge 123 has the advantages that the lower surface of the first boss 1221 and the lower surface of the third extending edge 134 are flush with each other and the groove-shaped sealing ring 1232 is arranged between the lower surfaces of the first boss 1221 and the third extending edge 134, the lower portion of the main friction area of the outer side wall of the first boss 1221 and the inner side wall of the second extending edge 133 is integrally sealed, water leakage from the main friction area to the outer side of the spray arm is avoided, and therefore the spray effect is guaranteed. The upper surface of the first groove side 12321 of the sealing ring 1232 is abutted to the lower surface of the first boss 1221, and the line-surface contact mode is adopted, so that the leakage amount of the middle sprayer is reduced, and the friction resistance is also reduced.
Although the utility model discloses it has reduced the swing of going up shower 11 to have set up some stop device, but because the 11 rotational speeds of going up shower are comparatively fast, can rocking more and more big in the long-time use inevitably, consequently still need other supplementary settings to reduce the oscillating quantity of going up shower 11 in the operation in-process, realize further insurance spacing.
In a preferred embodiment, a first gap 125 is provided between the third extension 134 of the penstock 13 and the inner sidewall of the retaining ring 121, and a second gap 126 is provided between the lower surface of the fourth extension 135 of the penstock 13 and the upper surface of the retaining ring 121.
The above embodiment has an advantage that by providing the first gap 125 and the second gap 126 between the third extended edge 134 and the fixed ring 121 and between the fixed ring 121 and the fourth extended edge 135, the range of the swing of the upper shower 11 can be limited while giving a certain movement space, for example, once the swing range of the shower arm 111 exceeds a set value, the first gap 125 and the second gap 126 can further prevent the abnormal swing of the shower arm 111, and thus, a safety limit function is achieved.
In a preferred embodiment, as shown in fig. 5a and 5b, a plurality of protrusions 1331 are further formed on the inner sidewall of the second extension 133 of the penstock 13, and the inner sidewall of the second extension 133 is abutted against the outer sidewall of the first boss 1221 by the protrusions 1331.
The advantage of the above-mentioned embodiment lies in, evenly set up a plurality of protruding piece 1331 on the inside wall of the second of penstock 13 that prolongs limit 133 to make protruding piece 1331 and the lateral wall of first boss 1221 to the butt, evenly distributed's butt part can guarantee that spray arm 111 can not produce when rotatory acutely rocking for penstock 13, has strengthened the stability of structure, simultaneously, because butt department can produce frictional force and hinder the motion of spray arm 111, consequently the utility model discloses set up the little recess that does not contact with first boss 1221 in protruding piece 1331's adjacent position, reduced the area of contact of protruding piece 1331 and first boss 1221, thereby reached the mesh that reduces friction.
Furthermore, the utility model also provides a dish washer 1, dish washer 1 includes the waterway system for dish washer among the above-mentioned any one technical scheme.
So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.
Claims (10)
1. A waterway system for a dish washing machine is characterized by comprising a water conduit, a fixing ring, a fixing piece and a spraying arm;
a first extending edge is arranged on the outer side surface of the water conduit, a protruding section is arranged from the first extending edge to the end part of the water conduit, a second extending edge is also arranged on the side surface of the first extending edge close to the protruding section, and a third extending edge is also arranged on the side surface of the second extending edge far away from the protruding section;
the fixing ring is provided with an inward extending edge facing the inner side to form a first through hole, the inner side of the fixing ring is provided with a clamping head, the second extending edge penetrates into the fixing ring, and the third extending edge is arranged between the clamping head and the inward extending edge;
the fixing piece comprises a first boss and a second boss arranged below the first boss, a first step hole is formed in the inner side of the first boss, a second step hole is formed in the inner side of the second boss, and the first step hole is communicated with the second step hole; the inner side wall of the second extending edge is abutted against the outer side wall of the first boss, and the convex section is connected with the second step hole after penetrating into the first step hole;
the spray arm is fixedly arranged on the outer side wall of the second boss.
2. The waterway system of a dishwasher of claim 1, wherein the lower surface of the first boss is flush with the lower surface of the third extension, the extension further comprises a hem protrusion and a sealing ring connected to the inner side of the hem protrusion, the sealing ring is disposed between the lower surface of the first boss and the lower surface of the third extension, thereby sealing the outer sidewall of the first boss and the inner sidewall of the second extension.
3. The waterway system of claim 2, wherein the cross-section of the gasket is groove-shaped, a first groove edge of the groove-shaped gasket abuts against the lower surface of the first projection, and a second groove edge abuts against the lower surface of the third extension.
4. The waterway system of claim 3, wherein the lower surface of the third extended edge is further provided with a protrusion, and correspondingly the top surface of the second groove edge is further provided with a U-shaped groove, and the protrusion is inserted into the U-shaped groove.
5. The waterway system of claim 1, wherein a plurality of protrusions are further provided on an inner sidewall of the second extension, and the inner sidewall of the second extension abuts against an outer sidewall of the first boss through the protrusions.
6. The waterway system of claim 1, wherein a first gap is further provided between the third extending edge and the inner side wall of the fixing ring; and/or the like, and/or,
a fourth extending edge is further extended from the outer side of the first extending edge, and a second gap is further formed between the lower surface of the fourth extending edge and the upper surface of the fixing ring.
7. The waterway system of a dishwasher of claim 1, wherein the inner sidewall of the protruding tube of the spray arm is provided with a plug-in protrusion, correspondingly, the outer sidewall of the second boss is provided with a plug-in groove, and the spray arm is plugged and fixed on the outer sidewall of the second boss.
8. The waterway system of claim 7, wherein an outer sidewall of the boss tube of the spray arm is inserted into the first through hole.
9. The waterway system of claim 1, wherein a reinforcing rib is further provided at an inner side of the fixing ring.
10. A dishwasher, characterized in that it is provided with a water circuit system for a dishwasher according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221558512.6U CN218419764U (en) | 2022-06-21 | 2022-06-21 | Water path system for dish washing machine and dish washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221558512.6U CN218419764U (en) | 2022-06-21 | 2022-06-21 | Water path system for dish washing machine and dish washing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218419764U true CN218419764U (en) | 2023-02-03 |
Family
ID=85076899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221558512.6U Active CN218419764U (en) | 2022-06-21 | 2022-06-21 | Water path system for dish washing machine and dish washing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218419764U (en) |
-
2022
- 2022-06-21 CN CN202221558512.6U patent/CN218419764U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN218419764U (en) | Water path system for dish washing machine and dish washing machine | |
| CN107348849B (en) | Shell assembly and cooking utensil | |
| CN117297464A (en) | Waterway system for dish washing machine and dish washing machine | |
| CN211795838U (en) | Cooking apparatus | |
| CN209943505U (en) | Integral type sealing washer and seal structure | |
| CN111657773A (en) | Automatic liquid feeding machine | |
| CN216495191U (en) | Top spray assembly and dish washing machine | |
| CN220898638U (en) | Integrated basin dish washer | |
| CN217592795U (en) | Dish washing machine | |
| CN216850523U (en) | Water-proof structure of charging port of tooth flushing device | |
| CN216965003U (en) | Electric sprayer capable of preventing water leakage | |
| CN215227002U (en) | Washing tank with overflow mechanism and dish preparation machine | |
| CN214017321U (en) | Drip-proof structure of liquid distributor | |
| CN217207914U (en) | Water tank structure and water purifying dispenser | |
| CN218500839U (en) | Water tank structure of tooth flushing device | |
| CN217405579U (en) | Shell assembly and battery module | |
| CN220025265U (en) | Waterproof structure of tooth-flushing device nozzle | |
| CN219035669U (en) | Valve assembly and dish washer | |
| CN217138301U (en) | Water tank with magnetic suction type connecting structure and oral cavity health care appliance | |
| CN109662673B (en) | Liner of dish washer and dish washer | |
| CN216055488U (en) | Unilateral lock catch structure for improving sealing grade of connector | |
| CN216440139U (en) | Filter element water stop joint and water purifier | |
| CN215110394U (en) | Shell for speed reducing structure | |
| CN217723439U (en) | Interior water pipe and dish washer | |
| CN216095266U (en) | Waterproof structure of electrical equipment and ultrasonic cleaning machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |