CN220905089U - Automobile steering gear and automobile - Google Patents
Automobile steering gear and automobile Download PDFInfo
- Publication number
- CN220905089U CN220905089U CN202322390035.8U CN202322390035U CN220905089U CN 220905089 U CN220905089 U CN 220905089U CN 202322390035 U CN202322390035 U CN 202322390035U CN 220905089 U CN220905089 U CN 220905089U
- Authority
- CN
- China
- Prior art keywords
- rack
- steering gear
- shell
- mounting seat
- wall
- 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
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Transmission Devices (AREA)
Abstract
The utility model relates to an automobile steering gear and an automobile, wherein the automobile steering gear comprises a steering gear shell, the steering gear shell comprises a gear shaft shell and a rack shell which are columnar and are communicated in a cross mode, a pinion shaft and a rack are respectively arranged in the steering gear shell and the rack shell, the automobile steering gear further comprises a first mounting seat which is sleeved on the rack shell through a sleeve hole, and the steering gear shell is mounted on an auxiliary frame through the first mounting seat; one or more positioning pins which are circumferentially arranged at intervals are arranged on the outer wall surface of the rack shell, and a plurality of positioning holes which are circumferentially arranged at intervals are arranged on the inner wall of the sleeve joint hole of the first mounting seat; the positioning pin can be in plug-in fit with different positioning holes so as to change the relative positions of the rack shell and the first mounting seat in the circumferential direction; the automobile steering gear with the structure has the same technical effects.
Description
Technical Field
The utility model relates to the technical field of automobile parts, in particular to an automobile steering gear and an automobile.
Background
The steering gear is an important part in an automobile, and the working principle of the steering gear is as follows: through external world (the driver rotates the steering wheel through the palm, and steering wheel transmission moment of torsion is to the steering column, and the steering column is connected with the steering gear, and transmission moment of torsion is to the steering gear) with moment of torsion follow steering gear pinion axle input, pinion axle rotates the in-process, drives the pull rod at rack and rack both ends and controls the removal, and the removal of pull rod tip is transmitted to the wheel to realize whole car and turn to. In the prior art, the steering gear of each vehicle type is a special part, has poor universality and cannot be suitable for vehicles of different vehicle types, and specifically, 1) the existing steering gear is fixedly arranged on the auxiliary frame through a steering gear shell, so that the deflection angle of a pinion shaft relative to a mounting surface is fixed and cannot be adjusted, and after the vehicle type is replaced, the pinion shaft cannot be matched with a new vehicle body, so that interference is caused, or the operation space is insufficient; 2) When the widths of different vehicle types are different, the steering gear may be too long or too short to be installed. Besides, the auxiliary frame is generally made of stamping parts through welding, the accuracy of a steering gear installation plane is not enough, the appearance cannot be identified, after the steering gear is assembled, the steering gear installation point is fixed, the steering gear shell is twisted, the steering gear shell and an internal rack are seriously interfered and extruded, and abnormal sound is caused.
Disclosure of utility model
The first object of the present utility model is: aiming at the problems that a pinion shaft of a steering gear in the prior art is fixed relative to a deflection angle of a mounting surface, cannot be suitable for different vehicle types and has poor universality, the automobile steering gear is provided; a second object of the present utility model is to provide an automobile.
In order to achieve the first object, the present utility model adopts the following technical scheme:
The steering gear comprises a steering gear shell, a first mounting seat and a second mounting seat, wherein the steering gear shell comprises a gear shaft shell and a rack shell which are columnar and are communicated in a crossing way, a pinion shaft and a rack are respectively arranged in the gear shaft shell and the rack shell, the first mounting seat is sleeved on the rack shell through a sleeve joint hole, and the steering gear shell is arranged on an auxiliary frame through the first mounting seat; one or more positioning pins which are circumferentially arranged at intervals are arranged on the outer wall surface of the rack shell, and a plurality of positioning holes which are circumferentially arranged at intervals are arranged on the inner wall of the sleeve joint hole of the first mounting seat; the positioning pin can be in plug-in fit with different positioning holes so as to change the relative position of the rack shell and the first mounting seat in the circumferential direction.
According to the steering gear disclosed by the utility model, the mounting mode that the steering gear shell is fixedly mounted on the auxiliary frame in the prior art is canceled, the steering gear shell is mounted on the auxiliary frame through the first mounting seat by additionally arranging the first mounting seat, and the positioning pin is in plug-in fit with different positioning holes by arranging the structure that the positioning pin is matched with the positioning holes so as to adjust the position of the rack shell in the circumferential direction relative to the first mounting seat, so that the front-back deflection angle of the pinion shaft relative to the mounting surface of the auxiliary frame is adjusted.
Further, the outer wall surface of the rack shell is provided with one positioning pin, and a plurality of positioning holes on the inner wall of the sleeving hole are arranged at equal intervals along the circumferential direction; only one positioning pin is arranged to be matched with different positioning holes, so that deflection angle adjustment of the pinion shaft relative to the mounting surface can be realized to adapt to different vehicle types.
Further, two positioning pins which are arranged at intervals along the circumferential direction or at least three positioning pins which are arranged at equal intervals along the circumferential direction are arranged on the outer wall of the rack shell; the positioning holes on the inner wall of the sleeve joint hole are arranged at equal intervals along the circumferential direction; the space between any two adjacent positioning pins is equal to the space between any two adjacent positioning holes, and the number of the positioning pins is less than that of the positioning holes; at least two locating pins are arranged to be matched with different locating holes, deflection angle adjustment of the pinion shaft relative to the mounting surface can be achieved, the structure of the at least two locating pins matched with the locating holes is more reliable, and matching failure caused by damage of a single locating pin is avoided.
Further, the first mounting seat comprises a first bushing and a first mounting bracket; the first bushing is made of rubber, is annular in shape, is provided with the sleeving hole in the middle, and is provided with a cutting joint along the sleeving hole direction between the inner wall and the outer wall of the first bushing; the first mounting bracket is encircling the outer wall of the first bushing and fixedly connected with the auxiliary frame; when the first bushing is installed, the annular first bushing is separated from the cutting seam to form a gap, the rack shell is installed in the sleeving hole from the gap, the positioning pin is inserted into the positioning hole, the first bushing is surrounded by the first mounting bracket, so that the gap is closed, and finally the first mounting bracket is fixedly installed on the auxiliary frame.
Further, the device also comprises an extension shaft, one end of the extension shaft is detachably and fixedly connected with one end of the rack, and the other end of the rack and the other end of the extension shaft are respectively and detachably connected with the left pull rod and the right pull rod; the length of the steering gear can be changed by changing the extension shafts with different lengths through newly adding the extension shafts so as to adapt to vehicles with different widths; when it is desired to shorten the length of the diverter, the length of the elongate shaft can be shortened by machining in addition to replacing the shorter elongate shaft.
Further, one end of the extension shaft is provided with an external thread, one end face of the rack is provided with a hole, and the inner wall of the hole is provided with an internal thread matched with the external thread; the other end of the rack and the other end of the extension shaft are respectively connected with a left pull rod and a right pull rod through inner ball heads; the connection structure of the extension shaft and the rack is simple and the connection is reliable.
Further, two first mounting seats are sleeved on the rack shell and are respectively positioned on two sides of the gear shaft shell; the auxiliary frame is fixedly connected with the auxiliary frame, and the extension shaft can axially slide and circumferentially rotate relative to the second mounting seat; three mutually independent mounting seats are arranged in total, and the three mounting seats can be used for adjusting respective angles along the circumferential direction so as to adapt to sub-frame mounting surfaces with different inclination angles, thereby effectively avoiding the problem of steering gear distortion caused by the defects of the sub-frame mounting surfaces.
Furthermore, the connection part of the rack and the left pull rod, the connection part of the rack and the extension shaft and the connection part of the extension shaft and the right pull rod are all provided with protective covers; dust is prevented from entering the connecting part, and the reliability of the connecting structure is ensured.
In order to achieve the second object, the present utility model adopts the following technical scheme:
An automobile comprises the automobile steering gear.
Compared with the prior art, the utility model has the beneficial effects that: the front-back deflection angle of the pinion shaft of the steering gear relative to the mounting surface can be adjusted so as to be suitable for different vehicle types, and the universality is good; the length of the steering gear can be changed by changing the extension shafts with different lengths through newly adding the extension shafts so as to adapt to vehicles with different widths; when the length of the steering gear needs to be shortened, the length of the extension shaft can be shortened by a machining mode besides replacing the shorter extension shaft; three mutually independent mounting seats are arranged, and the three mounting seats can be respectively adjusted in the circumferential direction so as to adapt to sub-frame mounting surfaces with different inclination angles, thereby effectively avoiding the problem of steering gear distortion caused by defects of the sub-frame mounting surfaces; the automobile has the same technical effects as the automobile steering gear.
Description of the drawings:
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an exploded view of the present utility model;
FIG. 3 is an exploded view of a first mount mounting structure;
FIG. 4 is a schematic view of a rack and extension rod connection structure;
Fig. 5 is an exploded view of a second mount mounting structure.
The marks in the figure: 1-steering gear housing, 2-gear shaft housing, 3-rack housing, 4-pinion shaft, 5-rack, 6-first mount, 7-locating pin, 8-locating hole, 9-first bush, 10-first mount, 11-socket hole, 12-kerf, 13-extension shaft, 14-left pull rod, 15-right pull rod, 16-second mount, 17-second bush, 18-second mount, 19-bush mount, 20-bush, 21-seal ring, 22-inner ball, 23-first dust cover, 24-second dust cover, 25-mount hole.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings.
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
The embodiment 1 provides an automobile steering gear, which comprises a steering gear shell 1, a first mounting seat 6, a second mounting seat 6 and a second mounting seat 6, wherein the steering gear shell 1 comprises a gear shaft shell 2 and a rack shell 3 which are columnar and are communicated in a crossing way, the pinion shaft 4 and the rack 5 are respectively arranged in the two shells, the first mounting seat 6 is sleeved on the rack shell 3 through a sleeve joint hole 11, and the steering gear shell 1 is arranged on a subframe through the first mounting seat 6; one or more positioning pins 7 which are circumferentially arranged at intervals are arranged on the outer wall surface of the rack shell 3, and a plurality of positioning holes 8 which are circumferentially arranged at intervals are arranged on the inner wall of the sleeving hole 11 of the first mounting seat 6; the positioning pin 7 can be in plug-in fit with different positioning holes 8 so as to change the relative positions of the rack housing 3 and the first mounting seat 6 in the circumferential direction;
The first mount 6 comprises a first bushing 9 and a first mounting bracket 10; the first bushing 9 is made of rubber, is annular in shape, is provided with a sleeving hole 11 in the middle, and is provided with a cutting joint 12 along the sleeving hole 11 direction between the inner wall and the outer wall of the first bushing 9; the first mounting bracket 10 is encircling the outer wall of the first bushing 9 and is fixedly connected with the auxiliary frame;
The outer wall of the rack shell 3 is provided with two positioning pins 7 which are arranged at intervals along the circumferential direction or at least three positioning pins which are arranged at equal intervals along the circumferential direction; the positioning holes 8 on the inner wall of the sleeve joint hole 11 are arranged at equal intervals along the circumferential direction; the space between any two adjacent positioning pins 7 is equal to the space between any two adjacent positioning holes 8, and the number of the positioning pins 7 is less than that of the positioning holes 8; in this embodiment, the outer wall of the rack housing 3 is provided with three positioning pins 7 which are arranged at equal intervals along the circumferential direction, and five positioning holes 8 which are arranged at equal intervals along the circumferential direction are formed in the inner wall of the sleeve connection hole 11 of the first bushing 9, and the positioning pins 7 can be matched with the first three positioning holes 8, the middle three positioning holes 8 or the last three positioning holes 8, and three insertion and matching modes are used to change the relative positions of the rack housing 3 and the first mounting seat 6 in the circumferential direction;
The setting modes of the positioning pin 7 and the positioning hole 8 are various, so long as the positioning pin 7 can be in plug-in fit with different positioning holes 8 to change the relative positions of the rack housing 3 and the first mounting seat 6 in the circumferential direction, for example, besides the setting modes, the setting modes can be as follows: a positioning pin 7 is arranged on the outer wall surface of the rack shell 3, and a plurality of positioning holes 8 on the inner wall of the sleeving hole are arranged at equal intervals along the circumferential direction;
It is also possible that: a positioning pin 7 is arranged on the outer wall surface of the rack shell 3, and a plurality of positioning holes 8 on the inner wall of the sleeving hole are arranged at unequal intervals along the circumferential direction;
It is also possible that: the outer wall of the rack shell 3 is provided with a plurality of positioning pins 7 uniformly distributed along the circumferential direction, the inner wall of a sleeve joint hole 11 of the first bushing 9 is provided with a plurality of positioning holes 8 uniformly distributed along the circumferential direction, and the number of the positioning pins 7 and the number of the positioning holes 8 are the same and at least 10;
The shape of the positioning pin 7 is not limited, and may be square, cylindrical, or the like; the positioning hole 8 can be a through hole or a blind hole, and can be matched with the positioning pin 7 in an inserting way;
The device also comprises an extension shaft 13, wherein one end of the extension shaft 13 is detachably and fixedly connected with one end of the rack 5, and the other end of the rack 5 and the other end of the extension shaft 13 are respectively and detachably connected with a left pull rod 14 and a right pull rod 15;
An external thread is arranged at one end of the extension shaft 13, an end face of one end of the rack 5 is provided with a hole, and an internal thread matched with the external thread is arranged on the inner wall of the hole; the other end of the rack 5 and the other end of the extension shaft 13 are respectively connected with the left pull rod 14 and the right pull rod 15 through an inner ball head 22;
Two first mounting seats 6 are sleeved on the rack housing 3 and are respectively positioned on two sides of the gear shaft housing 2; the auxiliary frame is characterized by further comprising a second mounting seat 16 sleeved on the extension shaft 13, wherein the second mounting seat 16 is fixedly connected with the auxiliary frame, and the extension shaft 13 can axially slide and circumferentially rotate relative to the second mounting seat 16; specifically, the second mounting seat 16 comprises a second bushing 17, a second mounting bracket 18, a bushing bracket 19, a bushing 20 and a sealing ring 21, wherein a bushing mounting hole is formed in the middle of the bushing bracket 19, an annular bushing 20 is mounted on the inner wall of the bushing mounting hole, the bushing bracket 19 and the bushing 20 are sleeved on the extension rod 13 through a through hole in the middle of the bushing 20, and the two sealing rings 21 are respectively mounted between the end faces of two ends of the bushing mounting hole and the extension rod 13 for sealing; the second bushing 17 made of rubber is wrapped outside the bushing bracket 19, and a second mounting bracket 18 is surrounded by the outer wall of the second bushing 17; the extension rod 13 can axially slide and circumferentially rotate relative to the bushing 20; the second mounting seat 16 can be axially sleeved when being mounted on the extension rod 13;
the connection part of the rack 5 and the left pull rod 14, the connection part of the rack 5 and the extension shaft 13 and the connection part of the extension shaft 13 and the right pull rod 15 are all provided with protective covers; specifically, a corrugated first dust cover 23 is arranged at the joint of the rack 5 and the left pull rod 14 and the joint of the rack 5 and the extension shaft 13, a second dust cover 24 is arranged at the joint of the extension shaft 13 and the right pull rod 15, and the second dust cover 24 is arranged on the right inner ball head 22;
the two first mounting brackets 10 and the one second mounting bracket 18 are omega-shaped, and the two lugs are respectively provided with a mounting hole 25 for connection with the auxiliary frame.
According to the steering gear disclosed by the utility model, the mounting mode that the steering gear shell is fixedly mounted on the auxiliary frame in the prior art is canceled, the steering gear shell is mounted on the auxiliary frame through the first mounting seat by additionally arranging the first mounting seat, and the positioning pin is in plug-in fit with different positioning holes by arranging the structure that the positioning pin is matched with the positioning holes so as to adjust the position of the rack shell in the circumferential direction relative to the first mounting seat, so that the adjustment of the front-rear deflection angle of the pinion shaft relative to the mounting surface of the auxiliary frame is realized; meanwhile, by additionally arranging the extension shafts, the length of the steering gear can be changed by changing the extension shafts with different lengths so as to adapt to vehicles with different widths; when the length of the steering gear needs to be shortened, the length of the extension shaft can be shortened by a machining mode besides replacing the shorter extension shaft; three mutually independent mounting seats are arranged, and the three mounting seats can be used for circumferentially adjusting respective angles so as to adapt to sub-frame mounting surfaces with different inclination angles, so that the problem of steering gear distortion caused by defects of the sub-frame mounting surfaces is effectively avoided.
Embodiment 2, an automobile comprising the above automobile steering gear.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (9)
1. The utility model provides an automobile steering ware, includes steering ware casing (1), and steering ware casing (1) are column and alternately communicate gear shaft casing (2) and rack housing (3) including all, and pinion shaft (4) and rack (5) are installed respectively to inside the two, its characterized in that: the steering gear comprises a rack shell (3), a steering gear shell (1) and a first mounting seat (6) sleeved on the rack shell through a sleeve hole (11), wherein the steering gear shell (1) is mounted on a subframe through the first mounting seat (6); one or more positioning pins (7) which are circumferentially arranged at intervals are arranged on the outer wall surface of the rack shell (3), and a plurality of positioning holes (8) which are circumferentially arranged at intervals are arranged on the inner wall of the sleeving hole (11) of the first mounting seat (6); the positioning pins (7) can be in plug-in fit with different positioning holes (8) so as to change the relative positions of the rack shell (3) and the first mounting seat (6) in the circumferential direction.
2. The automotive steering gear according to claim 1, wherein: the outer wall surface of the rack housing (3) is provided with one locating pin (7), and a plurality of locating holes (8) on the inner wall of the sleeve joint hole (11) are arranged at equal intervals along the circumferential direction.
3. The automotive steering gear according to claim 1, wherein: two positioning pins (7) which are arranged at intervals along the circumferential direction or at least three positioning pins which are arranged at equal intervals along the circumferential direction are arranged on the outer wall of the rack shell (3); the positioning holes (8) on the inner wall of the sleeve joint hole (11) are arranged at equal intervals along the circumferential direction; the distance between any two adjacent positioning pins (7) is equal to the distance between any two adjacent positioning holes (8), and the number of the positioning pins (7) is smaller than that of the positioning holes (8).
4. The automotive steering gear according to claim 1, wherein: the first mounting seat (6) comprises a first bushing (9) and a first mounting bracket (10); the first bushing (9) is made of rubber, is annular in shape, is provided with the sleeving hole (11) in the middle, and is provided with a cutting seam (12) along the sleeving hole (11) direction between the inner wall and the outer wall of the first bushing (9); the first mounting bracket (10) is encircling the outer wall of the first bushing (9) and is fixedly connected with the auxiliary frame.
5. The automotive steering gear according to claim 1, wherein: the novel lifting device is characterized by further comprising an extension shaft (13), wherein one end of the extension shaft (13) is detachably and fixedly connected with one end of the rack (5), and the other end of the rack (5) and the other end of the extension shaft (13) are detachably connected with a left pull rod (14) and a right pull rod (15) respectively.
6. The automobile steering gear according to claim 5, wherein: an external thread is arranged at one end of the extension shaft (13), an end face of one end of the rack (5) is provided with a hole, and an internal thread matched with the external thread is arranged on the inner wall of the hole; the other end of the rack (5) and the other end of the extension shaft (13) are respectively connected with a left pull rod (14) and a right pull rod (15) through an inner ball head (22).
7. The automobile steering gear according to claim 5, wherein: two first mounting seats (6) are sleeved on the rack shell (3) and are respectively positioned at two sides of the gear shaft shell (2); the bicycle is characterized by further comprising a second mounting seat (16) sleeved on the extension shaft (13), wherein the second mounting seat (16) is fixedly connected with the auxiliary frame, and the extension shaft (13) can axially slide and circumferentially rotate relative to the second mounting seat (16).
8. The automobile steering gear according to claim 5, wherein: the connection part of the rack (5) and the left pull rod (14), the connection part of the rack (5) and the extension shaft (13) and the connection part of the extension shaft (13) and the right pull rod (15) are all provided with protective covers.
9. An automobile, characterized in that: comprising an automotive steering gear according to any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322390035.8U CN220905089U (en) | 2023-09-04 | 2023-09-04 | Automobile steering gear and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322390035.8U CN220905089U (en) | 2023-09-04 | 2023-09-04 | Automobile steering gear and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220905089U true CN220905089U (en) | 2024-05-07 |
Family
ID=90904577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322390035.8U Active CN220905089U (en) | 2023-09-04 | 2023-09-04 | Automobile steering gear and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220905089U (en) |
-
2023
- 2023-09-04 CN CN202322390035.8U patent/CN220905089U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA3187172C (en) | Split-type hard front axle and vehicle having same | |
| CA3187166C (en) | Split-type hard front axle and vehicle having same | |
| CN220905089U (en) | Automobile steering gear and automobile | |
| KR20090092951A (en) | A gear box of seat sliding device for a car | |
| WO2011118465A1 (en) | Travelling vehicle for uneven terrain | |
| KR101637256B1 (en) | Powertrain and steering assembly layout | |
| CA3193053A1 (en) | An adjustable front axle and a vehicle having same | |
| MXPA02002188A (en) | Vehicle steering assembly. | |
| CN111891217B (en) | Suspension structure of vehicle and vehicle | |
| JP4122517B2 (en) | Assembly method for rear wheel drive device | |
| KR100834599B1 (en) | Pipe-type suspension subframe integrated with steering gear frame | |
| CN219115547U (en) | Rack and pinion steering gear and vehicle steering system | |
| CN215851455U (en) | Chassis of carrier loader and carrier loader | |
| CN213734600U (en) | Power assembly for vehicle and vehicle | |
| CN221075090U (en) | Portable dismounting lining and automobile thereof | |
| CN214450284U (en) | Drive shaft assembly for vehicle and vehicle | |
| CN220662199U (en) | Suspension and knuckle assembly and automobile | |
| CN217532459U (en) | Stabilizer bar and automobile | |
| CN212500637U (en) | Automobile steering shaft structure | |
| CN216069593U (en) | Suspension system of vehicle and vehicle with same | |
| CN220884533U (en) | Electric adjustment steering column, electric adjustment steering column assembly and vehicle | |
| CN213735171U (en) | Suspension structure of vehicle and vehicle | |
| US20230382452A1 (en) | Mechanism for increasing automotive ground clearance without compromising factory alignment specifications | |
| CN221162980U (en) | Steering gear speed reduction system, steering gear assembly and vehicle | |
| CN108327791B (en) | Nut assembly applied to auxiliary frame longitudinal beam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |