CN215553553U - Second crossbeam structure assembly of lorry - Google Patents
Second crossbeam structure assembly of lorry Download PDFInfo
- Publication number
- CN215553553U CN215553553U CN202122408445.1U CN202122408445U CN215553553U CN 215553553 U CN215553553 U CN 215553553U CN 202122408445 U CN202122408445 U CN 202122408445U CN 215553553 U CN215553553 U CN 215553553U
- Authority
- CN
- China
- Prior art keywords
- assembly
- streamline
- lug assembly
- leaf spring
- lifting lug
- 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
Landscapes
- Vehicle Body Suspensions (AREA)
Abstract
The utility model belongs to the technical field of automobile parts, and particularly relates to a second cross beam structure assembly applied to a heavy truck; the specific technical scheme is as follows: the utility model provides a lorry second crossbeam structure assembly, leaf spring lug assembly before first preceding leaf spring lug assembly and the second, link to each other through streamlined return bend between leaf spring lug assembly before first preceding leaf spring lug assembly and the second, streamlined return bend is equal wall thickness hollow tube, the lug assembly that the structure assembly passes through both sides links to each other with preceding leaf spring, be equipped with the first coupling assembling that links to each other with the condenser on the streamlined return bend, the second coupling assembling that links to each other with the brake pipe way, the third coupling assembling that links to each other with electric horn, the bolt links to each other with preceding leaf spring after passing the connecting hole on the first preceding leaf spring lug assembly, the bolt links to each other with preceding leaf spring after passing the connecting hole on the second preceding leaf spring assembly, whole structure quality is light, easy dismounting, good stability, and strong versatility.
Description
Technical Field
The utility model belongs to the technical field of automobile parts, and particularly relates to a second cross beam structure assembly applied to a heavy truck.
Background
Along with the development and use of the heavy-duty truck, the use and the comprehensive road condition of the truck are more and more diversified, particularly, the comprehensive road condition and the external environment of the truck special for heavy engineering are relatively severe, and the requirements on cooling and dust prevention of the engine are higher and higher. Automobile parts are also continuously improved, and in a chassis of a whole automobile frame, the boundary conditions of a second cross beam part corresponding to an engine fan mounting area are complex. The structural design of the second cross beam is very important, the strength is high, the universality is high, the assembly is convenient, and the functionality is multiple.
The second cross beam assembly of the existing heavy truck is arranged at the head of the truck frame, so that the strength of the head of the truck frame can be enhanced, the second cross beam of the existing heavy truck is mostly in a straight pipe type, the overall structure is complex, the structural strength is poor, and the assembly and disassembly are difficult; in addition, the traditional second cross beam is a stamping part, and the stamping part is heavy in weight and cannot meet the requirements of modern light-weight automobiles.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems in the prior art, the utility model provides the second cross beam assembly applied to the heavy truck, which has the advantages of light weight, stable structure and strong bearing capacity.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a lorry second crossbeam structure assembly, leaf spring lug assembly before leaf spring lug assembly and the second before first, leaf spring lug assembly parallel arrangement before first preceding leaf spring lug assembly and the second, link to each other through streamlined return bend between leaf spring lug assembly before first preceding leaf spring lug assembly and the second, the structure assembly links to each other with preceding leaf spring through the lug assembly of both sides. On the premise of meeting the structural strength, the streamline bent pipe is an arc-shaped pipe, the streamline bent pipe is a hollow pipe with equal wall thickness, and the structure of the hollow pipe with equal wall thickness is stable in stress.
The bottom of first preceding leaf spring lug assembly is equipped with first joint, and first joint arranges for first preceding leaf spring lug assembly slope, and the inclination of first joint is decided according to the arc angle of streamlined return bend, guarantees the stable connection of first joint and streamlined return bend, and the external diameter of first joint is the same with the external diameter of streamlined return bend, and first joint forms with the welding of streamlined return bend, and after the welding was accomplished, first joint is radially the same with streamlined return bend.
The top of the second front plate spring lifting lug assembly is provided with a second joint, the second joint is obliquely arranged relative to the second front plate spring lifting lug assembly, the inclination angle of the second joint is determined according to the arc angle of the streamline bend, the stable connection between the second joint and the streamline bend is ensured, the outer diameter of the second joint is the same as that of the streamline bend, the second joint is formed by welding the streamline bend, and after the welding is finished, the second joint is radially the same as the streamline bend.
Streamlined return bend upper portion is equipped with the first connecting assembly who links to each other with the condenser, first connecting assembly comprises first connecting plate and second connecting plate, first connecting plate is arranged with the second connecting plate is perpendicular, the one end of first connecting plate and the outer wall fixed connection of streamlined return bend, the other end of first connecting plate is free, it has a through-hole to open on the first connecting plate, it has two through-holes to open on the second connecting plate, the bolt links to each other with the condenser after passing the through-hole on the second connecting plate to realize fixing of condenser.
The middle part of the streamline-shaped bent pipe is provided with a second connecting assembly connected with the brake pipeline, one end of the second connecting assembly is fixedly connected with the outer wall of the streamline-shaped bent pipe, the other end of the second connecting assembly is free, a through hole is formed in the second connecting assembly, and the bolt is connected with the brake pipeline after penetrating through the through hole in the second connecting assembly so as to fix the brake pipeline.
The lower part of the streamline bend is provided with a third connecting assembly connected with the electric horn, the third connecting assembly is composed of a third connecting plate and a fourth connecting plate, the third connecting plate and the fourth connecting plate are arranged vertically, the third connecting plate is fixedly connected with the outer wall of the streamline bend, the fourth connecting plate is provided with a through hole, and the bolt is connected with the electric horn after penetrating through the through hole in the third connecting assembly so as to fix the electric horn.
It has first heavy through-hole that subtracts to open on the first preceding leaf spring lug assembly, and first subtract heavy through-hole and streamlined return bend's inside and be linked together, under the prerequisite of guaranteeing first preceding leaf spring lug assembly structural strength, the first weight through-hole that subtracts can enough alleviate the weight of first preceding leaf spring lug assembly, for the first preceding leaf spring lug assembly that does not trompil, it is better in structural strength to open up the first preceding leaf spring lug assembly that subtracts heavy through-hole, and stability is stronger.
The second front plate spring lifting lug assembly is provided with a second weight reducing through hole, the second weight reducing through hole is communicated with the interior of the streamline bent pipe, on the premise of ensuring the structural strength of the second front plate spring lifting lug assembly, the second weight reducing through hole can reduce the weight of the second front plate spring lifting lug assembly, and for the second front plate spring lifting lug assembly without a hole, the second front plate spring lifting lug assembly provided with the second weight reducing through hole is better in structural strength, and the stability is stronger.
Four connecting holes are formed in the first front plate spring lifting lug assembly, the bolt is connected with the front plate spring after penetrating through the connecting holes, and the dismounting and the mounting are convenient.
The second front plate spring lifting lug assembly is provided with four connecting holes, the bolt passes through the connecting holes in the second front plate spring lifting lug assembly and then is connected with the front plate spring, and the bolt passes through the connecting holes and then is connected with the front plate spring, so that the dismounting is convenient.
In order to guarantee that the atress is balanced, four connecting holes on the first preceding leaf spring lug assembly distribute on four outer corners, and the outer corner of first preceding leaf spring lug assembly all is handled through the fillet, all links to each other through the arc linkage segment of indent type between the adjacent outer corner, and the arc linkage segment is interior notch type structure, can enough guarantee connection stability, can alleviate the weight of whole assembly again under the prerequisite of guaranteeing first preceding leaf spring lug assembly structural strength.
In order to guarantee that the atress is balanced, four connecting holes on the leaf spring lug assembly distribute on four outer corners before the second, and the outer corner of leaf spring lug assembly all is handled through the fillet before the second, all links to each other through the arc linkage segment of indent type between the adjacent outer corner, and the arc linkage segment is interior notch type structure, can enough guarantee connection stability, can alleviate the weight of whole assembly again under the prerequisite of leaf spring lug assembly structural strength before guaranteeing the second.
Compared with the prior art, the utility model has the following specific beneficial effects:
according to the utility model, the streamline-shaped bent pipe is used as a main stress part, the front plate spring lifting lug assembly is fixed at both ends of the streamline-shaped bent pipe, the connecting hole fixedly connected with the front plate spring is formed in the front plate spring lifting lug assembly, the front plate spring lifting lug assembly is connected with the front plate spring after the bolt penetrates through the connecting hole, the assembly and disassembly and the maintenance are convenient, and the universality of the second beam assembly is improved.
The four concave arc-shaped connecting sections are arranged on the front plate spring lifting lug assembly, so that the structural strength of the front plate spring lifting lug assembly can be guaranteed, the weight of the whole structure can be greatly reduced, and the front plate spring lifting lug assembly is high in practicability and functionality.
And thirdly, the front plate spring lifting lug assembly is provided with a weight reducing through hole, so that the structural weight is further reduced by the weight reducing through hole, and the welding stability of the front plate spring lifting lug assembly and the streamline bend can be ensured.
Fourthly, on the premise of ensuring the structural strength, the streamline bend is a hollow pipe, and the weight of the streamline bend is further reduced.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a rear view of the present invention.
Fig. 4 is a left side view of the present invention.
Fig. 5 is a right side view of the present invention.
Fig. 6 is a top view of the present invention.
Fig. 7 is a bottom view of the present invention.
In the drawing, 1 is a first front plate spring lug assembly, 11 is a first joint, 12 is a first lightening through hole, 13 is a connecting hole, 14 is an arc-shaped connecting section, 2 is a second front plate spring lug assembly, 21 is a second joint, 22 is a second lightening through hole, 3 is a streamline elbow, 31 is a first connecting component, 311 is a first connecting plate, 312 is a second connecting plate, 32 is a second connecting component, 33 is a third connecting component, 331 is a third connecting plate, and 332 is a fourth connecting plate.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
As shown in fig. 1-7, a second beam structure assembly of a truck comprises a first front plate spring lifting lug assembly 1 and a second front plate spring lifting lug assembly 2, wherein the first front plate spring lifting lug assembly 1 and the second front plate spring lifting lug assembly 2 are arranged in parallel, the first front plate spring lifting lug assembly 1 and the second front plate spring lifting lug assembly 2 are connected through a streamline elbow 3, and the structure assembly is connected with a front plate spring through lifting lug assemblies on two sides. On the premise of meeting the structural strength, the streamline bent pipe 3 is an arc-shaped pipe, the streamline bent pipe 3 is a hollow pipe with equal wall thickness, and the structure of the hollow pipe with equal wall thickness is stable in stress.
The bottom of first preceding leaf spring lug assembly 1 is equipped with first joint 11, first joint 11 arranges for first preceding leaf spring lug assembly 1 slope, the inclination of first joint 11 is decided according to streamlined return bend 3's arc angle, guarantee first joint 11 and streamlined return bend 3 stable connection, the external diameter of first joint 11 is the same with streamlined return bend 3's external diameter, first joint 11 forms with streamlined return bend 3 welding, after the welding is accomplished, first joint 11 is radially the same with streamlined return bend 3, guarantee the force stability.
The top of the second front plate spring lifting lug assembly 2 is provided with a second joint 21, the second joint 21 is obliquely arranged relative to the second front plate spring lifting lug assembly 2, the inclination angle of the second joint 21 is determined according to the arc angle of the streamline elbow 3, the stable connection between the second joint 21 and the streamline elbow 3 is ensured, the outer diameter of the second joint 21 is the same as that of the streamline elbow 3, the second joint 21 is welded with the streamline elbow 3, after the welding is finished, the second joint 21 is radially the same as the streamline elbow 3, and the stress stability is ensured.
The upper portion of the streamline elbow 3 is provided with a first connecting component 31 connected with the condenser, the first connecting component 31 is composed of a first connecting plate 311 and a second connecting plate 312, the first connecting plate 311 is arranged perpendicularly to the second connecting plate 312, one end of the first connecting plate 311 is fixedly connected with the outer wall of the streamline elbow 3, the other end of the first connecting plate 311 is free, the first connecting plate 311 is provided with a through hole, the second connecting plate 312 is provided with two through holes, and the bolt is connected with the condenser after penetrating through the through hole on the second connecting plate 312 so as to fix the condenser.
The middle part of the streamline bend 3 is provided with a second connecting component 32 connected with the brake pipeline, one end of the second connecting component 32 is fixedly connected with the outer wall of the streamline bend 3, the other end of the second connecting component 32 is free, a through hole is formed in the second connecting component 32, and the bolt is connected with the brake pipeline after penetrating through the through hole in the second connecting component 32 so as to fix the brake pipeline.
The lower part of the streamline bend 3 is provided with a third connecting assembly 33 connected with the electric horn, the third connecting assembly 33 is composed of a third connecting plate 331 and a fourth connecting plate 332, the third connecting plate 331 and the fourth connecting plate 332 are vertically arranged, the third connecting plate 331 is fixedly connected with the outer wall of the streamline bend 3, the fourth connecting plate 332 is provided with a through hole, and a bolt passes through the through hole on the third connecting assembly 33 and then is connected with the electric horn so as to fix the electric horn.
It has first heavy through-hole 12 that subtracts to open on first preceding leaf spring lug assembly 1, and first heavy through-hole 12 that subtracts is linked together with streamlined return bend 3's inside, is guaranteeing under the prerequisite of 1 structural strength of first preceding leaf spring lug assembly, and first heavy through-hole 12 that subtracts can enough alleviate the weight of first preceding leaf spring lug assembly 1, for the first preceding leaf spring lug assembly 1 that does not trompil, it is better in structural strength to open up first preceding leaf spring lug assembly 1 that subtracts heavy through-hole 12, and stability is stronger.
Open before the second on leaf spring lug assembly 2 and subtract heavy through-hole 22, the second subtracts heavy through-hole 22 and is linked together with streamlined return bend 3's inside, on the prerequisite of guaranteeing 2 structural strength of leaf spring lug assembly before the second, the second subtracts heavy through-hole 22 can enough alleviate the weight of leaf spring lug assembly 2 before the second, for leaf spring lug assembly 2 before the second of not trompil, it is better in structural strength to open the second and subtract leaf spring lug assembly 2 before the second of heavy through-hole 22, stability is stronger.
Four connecting holes 13 are formed in the first front plate spring lifting lug assembly 1, the bolt penetrates through the connecting holes 13 in the first front plate spring lifting lug assembly 1 and then is connected with the front plate spring, and the bolt penetrates through the connecting holes 13 and then is connected with the front plate spring, so that the mounting and dismounting are convenient.
The four connecting holes 13 are formed in the second front plate spring lifting lug assembly 2, the bolt is connected with the front plate spring after penetrating through the connecting holes 13 in the second front plate spring lifting lug assembly 2, and the bolt is connected with the front plate spring after penetrating through the connecting holes 13, so that the mounting and dismounting are convenient.
In order to guarantee that the atress is balanced, four connecting holes 13 on first preceding leaf spring lug assembly 1 distribute on four outer corners, and the outer corner of first preceding leaf spring lug assembly 1 all is handled through the fillet, all links to each other through the arc linkage segment 14 of indent type between the adjacent outer corner, and arc linkage segment 14 is the indent type structure, can enough guarantee connection stability, can alleviate the weight of whole assembly again under the prerequisite of guaranteeing first preceding leaf spring lug assembly 1 structural strength.
In order to guarantee that the atress is balanced, four connecting holes 13 on the leaf spring lug assembly 2 distribute on four outer corners before the second, leaf spring lug assembly 2's outer corner all is handled through the fillet before the second, all links to each other through the arc linkage segment 14 of indent type between the adjacent outer corner, arc linkage segment 14 is the indent type structure, can enough guarantee connection stability, can alleviate the weight of whole assembly again under the prerequisite of guaranteeing 2 structural strength of leaf spring lug assembly before the second.
The material of the utility model is changed from 510L steel to ZG270-500 medium carbon cast steel, the whole structure is changed from stamping parts to casting parts, and the weight of the whole structure is reduced by more than 30%.
Structural rationality is analyzed through dynamics squaring analysis software pouring simulation software, and practical use requirements are verified through a bench test and a road test.
According to the utility model, the streamline bend 3 is used as a main stress part, the front plate spring lifting lug assembly is fixed at both ends of the streamline bend 3, the connecting hole 13 fixedly connected with the front plate spring is formed in the front plate spring lifting lug assembly, the front plate spring lifting lug assembly is connected with the front plate spring after passing through the connecting hole 13 through a bolt, the assembly and disassembly and the maintenance are convenient, and the universality of the second beam assembly is improved.
The four inward concave arc-shaped connecting sections 14 are arranged on the front plate spring lifting lug assembly, so that the structural strength of the front plate spring lifting lug assembly can be ensured, the weight of the whole structure can be greatly reduced, and the front plate spring lifting lug assembly is high in practicability and high in functionality.
According to the utility model, the front plate spring lifting lug assembly is provided with the weight-reducing through hole, the weight-reducing through hole further reduces the structural weight, and the welding stability of the front plate spring lifting lug assembly and the streamline elbow 3 can be ensured.
On the premise of ensuring the structural strength, the streamline bend 3 is a hollow pipe, so that the weight of the streamline bend 3 is further reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included therein.
Claims (3)
1. A second beam structure assembly of a truck is characterized by comprising a first front plate spring lifting lug assembly (1) and a second front plate spring lifting lug assembly (2), wherein the first front plate spring lifting lug assembly (1) is connected with the second front plate spring lifting lug assembly (2) through a streamline bent pipe (3), and the streamline bent pipe (3) is a hollow pipe with equal wall thickness;
the bottom of the first front plate spring lifting lug assembly (1) is provided with a first joint (11), the outer diameter of the first joint (11) is the same as that of the streamline-shaped bent pipe (3), and the first joint (11) is welded with the streamline-shaped bent pipe (3);
the top of the second front plate spring lifting lug assembly (2) is provided with a second joint (21), the outer diameter of the second joint (21) is the same as that of the streamline bent pipe (3), and the second joint (21) is welded with the streamline bent pipe (3);
the upper part of the streamline elbow (3) is provided with a first connecting component (31) connected with the condenser, the first connecting component (31) consists of a first connecting plate (311) and a second connecting plate (312), the first connecting plate (311) and the second connecting plate (312) are vertically arranged, one end of the first connecting plate (311) is fixedly connected with the outer wall of the streamline elbow (3), the other end of the first connecting plate (311) is free, the first connecting plate (311) is provided with a through hole, and the second connecting plate (312) is provided with two through holes;
a second connecting assembly (32) connected with a brake pipeline is arranged in the middle of the streamline bent pipe (3), one end of the second connecting assembly (32) is fixedly connected with the outer wall of the streamline bent pipe (3), the other end of the second connecting assembly (32) is free, and a through hole is formed in the second connecting assembly (32);
the lower part of the streamline elbow (3) is provided with a third connecting assembly (33) connected with the electric horn, the third connecting assembly (33) consists of a third connecting plate (331) and a fourth connecting plate (332), the third connecting plate (331) and the fourth connecting plate (332) are vertically arranged, the third connecting plate (331) is fixedly connected with the outer wall of the streamline elbow (3), and the fourth connecting plate (332) is provided with a through hole;
a first weight-reducing through hole (12) is formed in the first front plate spring lifting lug assembly (1), and the first weight-reducing through hole (12) is communicated with the interior of the streamline bent pipe (3);
a second weight-reducing through hole (22) is formed in the second front plate spring lifting lug assembly (2), and the second weight-reducing through hole (22) is communicated with the interior of the streamline bent pipe (3);
four connecting holes (13) are formed in the first front plate spring lifting lug assembly (1);
four connecting holes (13) are formed in the second front plate spring lifting lug assembly (2).
2. The second cross beam structure assembly of the heavy truck as recited in claim 1, characterized in that four connecting holes (13) on the first front leaf spring lifting lug assembly (1) are distributed on four outer corners, the outer corners of the first front leaf spring lifting lug assembly (1) are all processed by round corners, and adjacent outer corners are connected through concave arc-shaped connecting sections (14);
four connecting holes (13) in the second front plate spring lifting lug assembly (2) are distributed on four outer corners, the outer corners of the second front plate spring lifting lug assembly (2) are all processed through round corners, and adjacent outer corners are connected through concave arc connecting sections (14).
3. Second beam structure assembly of a truck according to claim 2, characterized in that the first (1) and second (2) front leaf spring shackle assemblies are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122408445.1U CN215553553U (en) | 2021-10-08 | 2021-10-08 | Second crossbeam structure assembly of lorry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122408445.1U CN215553553U (en) | 2021-10-08 | 2021-10-08 | Second crossbeam structure assembly of lorry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215553553U true CN215553553U (en) | 2022-01-18 |
Family
ID=79853154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122408445.1U Active CN215553553U (en) | 2021-10-08 | 2021-10-08 | Second crossbeam structure assembly of lorry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215553553U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117381619A (en) * | 2023-12-12 | 2024-01-12 | 太原市三高能源发展有限公司 | Polishing equipment for automobile casting production |
-
2021
- 2021-10-08 CN CN202122408445.1U patent/CN215553553U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117381619A (en) * | 2023-12-12 | 2024-01-12 | 太原市三高能源发展有限公司 | Polishing equipment for automobile casting production |
| CN117381619B (en) * | 2023-12-12 | 2024-03-22 | 太原市三高能源发展有限公司 | Polishing equipment for automobile casting production |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215553553U (en) | Second crossbeam structure assembly of lorry | |
| CN107097850B (en) | General type aluminum alloy car sub vehicle frame structure | |
| CN112498100A (en) | LNG vehicle-mounted gas cylinder frame | |
| CN213008364U (en) | Friction welding traction beam assembly and vehicle applying same | |
| CN102658835B (en) | Steering engine fixed bracket for medium-heavy automobiles | |
| CN215360825U (en) | High liftoff chassis's back air suspension and car | |
| CN215435894U (en) | Shock absorber seat, shock absorber tower structure and vehicle | |
| CN206367375U (en) | A kind of automobile and its engine-mounting bracket | |
| CN207173285U (en) | A kind of left front support of engine | |
| CN215553562U (en) | First crossbeam structure assembly of load frame | |
| CN218172383U (en) | Steering gear support | |
| CN209381713U (en) | A kind of air suspension guiding arm support | |
| CN214028105U (en) | Promote automobile dynamic stiffness's drag arm mounting structure | |
| CN211943499U (en) | Plate spring support, split assembly type forged beam assembly using plate spring support and automobile | |
| CN218858527U (en) | Combined rear tail beam device | |
| CN221049778U (en) | Tractor welding frame | |
| CN211995056U (en) | Automobile rear suspension mounting structure | |
| CN218364344U (en) | Bearing type automobile suspension positioning tool | |
| CN211811360U (en) | Semi-trailer | |
| CN216374097U (en) | Plate spring support and hanger plate assembly and vehicle using same | |
| CN211280502U (en) | Axle housing and axle housing assembly | |
| CN109955905B (en) | All-terrain vehicle frame structure | |
| CN212242871U (en) | Double-fork-arm aluminum alloy damping tower structure and hydrogen energy automobile | |
| CN211715466U (en) | Novel integral flange | |
| CN216886897U (en) | Integral casting front connecting beam matched with heavy truck |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |