CN212979775U - Suspension for vehicle and vehicle with same - Google Patents

Suspension for vehicle and vehicle with same Download PDF

Info

Publication number
CN212979775U
CN212979775U CN202021492425.6U CN202021492425U CN212979775U CN 212979775 U CN212979775 U CN 212979775U CN 202021492425 U CN202021492425 U CN 202021492425U CN 212979775 U CN212979775 U CN 212979775U
Authority
CN
China
Prior art keywords
suspension
connecting piece
knuckle
swing arm
vehicle
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
Application number
CN202021492425.6U
Other languages
Chinese (zh)
Inventor
侯建勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BAIC Motor Co Ltd
Original Assignee
BAIC Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BAIC Motor Co Ltd filed Critical BAIC Motor Co Ltd
Priority to CN202021492425.6U priority Critical patent/CN212979775U/en
Application granted granted Critical
Publication of CN212979775U publication Critical patent/CN212979775U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Vehicle Body Suspensions (AREA)

Abstract

The utility model discloses a vehicle that is used for suspension of vehicle and has it, the suspension includes: a strut and a swing arm; the matched support is fixedly arranged on the strut; the connecting assembly comprises a first connecting piece and a second connecting piece, the first end of the first connecting piece is matched and connected with the first end of the second connecting piece to form a rotating pair, and the second end of the first connecting piece is fixed on the matching support; and the lower end of the steering knuckle is positioned below the matching support and is hinged with the swing arm, and the upper end of the steering knuckle is fixedly connected with the second end of the second connecting piece. According to the utility model discloses a suspension for vehicle turns to the in-process at the car, and the pillar need not to follow the knuckle and rotates, can reduce the interior frictional force of a steering system effectively, can cancel the pillar bearing structure among the prior art simultaneously, avoids turning to in-process pillar rubber part and twists reverse and produce the abnormal sound, can improve the reliability of suspension from this, prolongs the life of suspension.

Description

Suspension for vehicle and vehicle with same
Technical Field
The utility model belongs to the technical field of the technique of the suspension of car and specifically relates to a vehicle that is used for suspension of vehicle and has it.
Background
The suspension system is a general name of a force transmission and guide mechanism which is connected between a wheel and a vehicle body, and plays roles of buffering, damping and guiding the wheel to move according to a certain track. The McPherson front suspension is widely applied to small and medium-sized passenger cars due to simple structure, small occupied space and low cost. After the front suspension of McPherson in the related art is applied to an automobile, when the automobile turns, a front pillar needs to rotate along with the front pillar to realize a turning function. Therefore, the steering inner friction force is large, the requirement on the bearing performance of the strut bearing is high, and the strut rubber part is easy to generate abnormal sound in the steering process, so that the structure of the suspension of the automobile needs to be improved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a suspension for vehicle, in the auto steering in-process, the pillar need not to follow the knuckle and rotates, can reduce the internal friction of a steering system effectively from this, can cancel the pillar bearing structure among the prior art simultaneously, avoids turning to in-process pillar rubber part and twists reverse and produce the abnormal sound, can improve the reliability of suspension from this, prolongs the life of suspension.
The utility model discloses still provide a vehicle, including foretell a suspension that is used for the vehicle.
According to the utility model discloses a suspension for vehicle, include: a strut and a swing arm; the matching support is fixedly arranged on the strut; the connecting assembly comprises a first connecting piece and a second connecting piece, the first end of the first connecting piece is matched and connected with the first end of the second connecting piece to form a rotating pair, and the second end of the first connecting piece is fixed on the matching support; the steering knuckle is located below the matching support, the lower end of the steering knuckle is hinged to the swing arm, and the upper end of the steering knuckle is fixedly connected with the second end of the second connecting piece.
According to the utility model discloses a suspension for vehicle through setting up cooperation support and coupling assembling, makes the cooperation support establish on the pillar fixedly, and coupling assembling includes first connecting piece and second connecting piece, and the first end of first connecting piece is connected in order to form the revolute pair with the first end cooperation of second connecting piece, and the second end of first connecting piece is fixed on the cooperation support, and the lower extreme of knuckle is articulated with the swing arm, and the upper end of knuckle and the second end fixed connection of second connecting piece. Therefore, in the process of automobile steering, the strut does not need to rotate along with the steering knuckle, so that the internal friction force of a steering system can be effectively reduced, meanwhile, a strut bearing structure in the prior art can be eliminated, abnormal sound caused by torsion of a strut rubber part in the steering process is avoided, the reliability of the suspension can be improved, and the service life of the suspension is prolonged.
According to some embodiments of the invention, one of the first connecting member and the second connecting member is a ball stud and the other is a ball mount.
In some embodiments of the present invention, the first connecting member is fixed to the fitting seat by fitting with a fastening nut, and the second connecting member is fixed to the upper end of the knuckle by fitting with a fastening nut.
According to some embodiments of the invention, the mating support is detachably provided on the pillar.
According to some embodiments of the invention, the mating support is integral with the pillar.
According to some embodiments of the invention, the mating support is a forged structure.
According to some embodiments of the invention, the cooperating support comprises a first support part and a second support part perpendicular to each other and connected, the first support part being adapted to fix the first connecting member, the second support part being adapted to fix on the pillar.
In some embodiments of the present invention, a through hole is provided on the first seat portion, the second end of the first connecting member is adapted to pass through the through hole to cooperate with a fastening nut to be fixed on the first seat portion, and a cross section of the through hole is formed in one of a triangle, a circle, and a polygon in a direction away from the knuckle.
According to some embodiments of the utility model, be equipped with the swing arm bulb in the swing arm, the swing arm bulb is in order to articulate through the cooperation with fastening nut the lower extreme of knuckle.
According to the utility model discloses vehicle, include according to the utility model discloses a suspension for vehicle of above-mentioned embodiment.
According to the utility model discloses vehicle, through setting up the basis the utility model discloses a suspension for vehicle of above-mentioned embodiment. Therefore, in the automobile steering process, the strut does not need to rotate along with the steering knuckle, so that the internal friction force of a steering system can be effectively reduced, meanwhile, a strut bearing structure in the prior art can be eliminated, abnormal sound caused by torsion of a strut rubber part in the steering process is avoided, the reliability of the suspension can be improved, the service life of the suspension is prolonged, and the reliability of the automobile is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic diagram of a suspension according to some embodiments of the present invention;
fig. 2 is an exploded view of a suspension according to some embodiments of the present invention;
fig. 3 is an exploded view of a partial structure of a suspension according to some embodiments of the present invention;
fig. 4 is a schematic view of a swing arm according to some embodiments of the present invention;
fig. 5 is a schematic illustration of a support post according to some embodiments of the present invention;
fig. 6 is a schematic view of a steering knuckle according to some embodiments of the present invention;
fig. 7 is a schematic view of a mating support according to some embodiments of the present invention;
fig. 8 is a schematic view of a second connector according to some embodiments of the present invention;
fig. 9 is a schematic view of a first connector according to some embodiments of the present invention;
fig. 10 is a schematic view of a fastening nut according to some embodiments of the present invention.
Reference numerals:
100. a suspension;
1. a pillar; 11. a second fixing hole;
2. swinging arms; 21. a swing arm ball head;
3. matching with a support;
31. a first mount section; 311. a through hole; 32. a second stand portion; 321. a first fixing hole;
4. a connecting assembly;
41. a first connecting member; 411. a ball bowl; 412. installing a shaft;
42. a second connecting member; 421. a ball head; 422. a shaft;
5. a knuckle; 51. a mating hole; 52. connecting holes; 53. a first mounting hole; 54. a second mounting hole;
6. and (5) tightening the nut.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
A suspension 100 according to an embodiment of the present invention is described below with reference to fig. 1-10.
As shown in fig. 1, a suspension 100 according to an embodiment of the present invention includes: pillar 1, swing arm 2, cooperation support 3, coupling assembling 4 and knuckle 5.
Specifically, as shown in fig. 1 and 2, the matching support 3 is fixedly disposed on the pillar 1, the connecting assembly 4 includes a first connecting member 41 and a second connecting member 42, a first end of the first connecting member 41 is connected with a first end of the second connecting member 42 in a matching manner to form a revolute pair, a second end of the first connecting member 41 is fixed on the matching support 3, the knuckle 5 is located below the matching support 3, a lower end of the knuckle 5 is hinged to the swing arm 2, and an upper end of the knuckle 5 is fixedly connected with a second end of the second connecting member 42.
Therefore, the utility model discloses the pillar 1 can be connected with the cooperation of knuckle 5 through cooperation support 3 and coupling assembling 4, because first connecting piece 41 and second connecting piece 42 cooperation are connected and are formed the revolute pair to it can be understood that the knuckle 5 can take place to rotate relative pillar 1, and the lower extreme of knuckle 5 is articulated with swing arm 2 again, thereby makes knuckle 5 also can take place to rotate relative swing arm 2. Therefore, compared with the prior art in which the knuckle and the pillar are fixedly connected, in the suspension 100 of the embodiment of the present invention, the knuckle 5 and the pillar 1 are movably connected; compare with the line of the centre of the swing arm bulb on the pivot of the king-pin axis among the prior art by the up end of pillar and swing arm, the utility model discloses suspension 100, the king-pin axis is formed by the line of the centre of the swing arm bulb 21 on second connecting piece 42 in the coupling assembling 4 of knuckle 5 upper end and the swing arm 2.
Therefore, it can be understood that, during the steering process of the automobile, the knuckle 5 can rotate around the kingpin axis, that is, the second connecting piece 42 in the connecting assembly 4 at the upper end of the knuckle 5 rotates around the center connecting line of the swing arm ball 21 on the swing arm 2, and the pillar 1 does not rotate together, that is, the pillar 1 does not need to rotate along with the knuckle 5, so that the friction force in the steering system can be effectively reduced, meanwhile, the pillar bearing structure in the prior art can be eliminated, and abnormal noise caused by the torsion of the rubber part of the pillar 1 during the steering process can be avoided, so that the reliability of the suspension 100 can be improved, and the service life of the suspension 100 can be prolonged.
According to the utility model discloses suspension 100, through setting up cooperation support 3 and coupling assembling 4, make cooperation support 3 establish on pillar 1 fixedly, coupling assembling 4 includes first connecting piece 41 and second connecting piece 42, the first end of first connecting piece 41 is connected in order to form the revolute pair with the first end cooperation of second connecting piece 42, the second end of first connecting piece 41 is fixed on cooperation support 3, the lower extreme of knuckle 5 is articulated with swing arm 2, the upper end of knuckle 5 and the second end fixed connection of second connecting piece 42. Therefore, in the steering process of the automobile, the strut 1 does not need to rotate along with the steering knuckle 5, so that the internal friction force of a steering system can be effectively reduced, meanwhile, a strut bearing structure in the prior art can be eliminated, abnormal sound caused by torsion of a rubber part of the strut 1 in the steering process is avoided, the reliability of the suspension 100 can be improved, and the service life of the suspension 100 is prolonged.
As shown in fig. 2-3, according to some embodiments of the present invention, one of the first connecting member 41 and the second connecting member 42 is a ball stud, and the other is a ball socket. Therefore, the connecting assembly 4 has a simple and reliable structure, and the reliability of the revolute pair formed by the first connecting piece 41 and the second connecting piece 42 in a matched mode can be guaranteed. It will be appreciated that in the embodiment of the present invention, the first connecting member 41 and the second connecting member 42 cooperate to form a spherical kinematic pair, thereby ensuring that the knuckle 5 is rotatable relative to the pillar 1. Meanwhile, it should be noted that, in the embodiment of the present invention, the first connecting member 41 may be configured as a ball stud, and the second connecting member 42 may be configured as a ball socket. It is also possible to provide the first connecting member 41 as a ball socket and the second connecting member 42 as a ball stud. For example, as shown in fig. 2, 3, 8 and 9, the first connecting member 41 is a ball socket, and the second connecting member 42 is a ball stud, when the ball stud is engaged with the ball socket, the ball 421 of the ball stud can be inserted into the ball bowl 411 of the ball socket to form a spherical kinematic pair.
As shown in fig. 1 to 3, in some embodiments of the present invention, the first connecting member 41 is fixed to the mating bracket 3 by engaging with the fastening nut 6, and the second connecting member 42 is fixed to the upper end of the knuckle 5 by engaging with the fastening nut 6. This ensures that the first connecting part 41 is securely fixed to the counter bearing 3 and the second connecting part 42 is securely fixed to the upper end of the steering knuckle 5. For example, as shown in fig. 2, 3, 8 and 9, the first connecting member 41 is a ball socket, the second connecting member 42 is a ball stud, when the ball stud is engaged with the ball socket, the ball 421 of the ball stud can extend into the ball bowl 411 of the ball 421 socket, and the ball 422 of the ball stud can be inserted into the engaging hole 51 of the knuckle 5 and engaged with the fastening nut 6 to be fixed on the upper end of the knuckle 5. The mounting shaft 412 of the ball cup may be inserted through the through hole 311 of the mating support 3 and engaged with the fastening nut 6 to be fixed to the mating support 3.
According to some embodiments of the present invention, the mating support 3 is detachably provided on the pillar 1. Thereby being convenient for cooperating the replacement and the maintenance of the support 3 and being beneficial to prolonging the service life of the support 1. Wherein the counter bearing 3 can be fixed on the pillar 1 by means of a connecting piece. For example, as shown in fig. 2, 3, 5 and 7, two first fixing holes 321 are provided on the mating support 3 at intervals in the vertical direction, two sets of second fixing holes 11 are provided at intervals in the vertical direction at the lower end of the pillar 1, two sets of second fixing holes 11 are provided at intervals in each set, each set of second fixing holes 11 is provided at an interval, each first fixing hole 321 is provided corresponding to two second fixing holes 11 located at the same height, and then the first fixing holes 321 and the two second fixing holes 11 corresponding to each other can be respectively penetrated by connecting members to fix the mating support 3 at the lower end of the pillar 1.
According to some embodiments of the present invention, the mating support 3 is a forged structure. This is advantageous in ensuring the structural strength of the mating bracket 3 and improving the structural reliability of the suspension 100. It should be noted that the mating bracket 3 may also be a cast structural member, a welded structural member, or the like, as long as the reliability of the mating bracket 3 and the reliability of the suspension 100 are ensured.
According to some embodiments of the present invention, the mating support 3 is a piece of metal material. The structural strength and the wear resistance of the matching support 3 are improved. Thereby improving the reliability of the suspension 100.
According to some embodiments of the invention, the cooperating support 3 is in one piece with the prop 1. This facilitates the mounting of the suspension 100, facilitates the simplification of the assembly process of the suspension 100, and improves the assembly efficiency of the suspension 100.
In some embodiments of the present invention, the mating support 3 is fixed to the lower end of the pillar 1 by casting. It is thus possible to ensure the reliability of the fixing of the cooperating seating 3 on the stanchion 1 and the reliability of the forming of the cooperating seating 3 in a single piece with the stanchion 1.
As shown in fig. 2, 3 and 7, according to some embodiments of the present invention, the mating support 3 comprises a first support portion 31 and a second support portion 32 perpendicular to each other and connected, the first support portion 31 being adapted to fix the first connecting member 41, and the second support portion 32 being adapted to be fixed on the support 1. It is thus clear that the structure of the mating holder 3 is reliable. And the mutually perpendicular structural arrangement of the first seat portion 31 and the second seat portion 32 is beneficial to avoiding the mutual interference phenomenon during the operation of fixing the first connecting piece 41 to the first seat portion 31 and fixing the second seat portion 32 to the strut 1, and improving the reliability of the matched seat 3. Alternatively, the mating holder 3 includes only the first and second holder portions 31 and 32 perpendicular to and connected to each other. This results in a simple construction and a simple production of the counter bearing 3.
As shown in fig. 3 and 7, in some embodiments of the present invention, a through hole 311 is provided on the first seat portion 31, the second end of the first connecting member 41 is adapted to pass through the through hole 311 to cooperate with the fastening nut 6 to be fixed on the first seat portion 31, and a cross section of the through hole 311 is formed in one of a triangle, a circle and a polygon in a direction away from the knuckle 5. Therefore, the first connecting member 41 is fixed to the first seat 31 in a simple and reliable manner. The through hole 311 has a simple structure and is easy to manufacture.
As shown in fig. 4, according to some embodiments of the present invention, a swing arm ball 21 is disposed on the swing arm 2, and the swing arm ball 21 is coupled with the fastening nut 6 to be hinged at the lower end of the knuckle 5. Thereby, the reliability of the hinged connection of the swing arm 2 and the lower end of the knuckle 5 can be ensured. For example, as shown in fig. 2, a portion of the swing arm ball 21 on the swing arm 2 may be inserted through a connection hole 52 at the lower end of the knuckle 5 and then engaged with the fastening nut 6 to be articulated with the knuckle 5.
Alternatively, as shown in fig. 1, the swing arm 2 and the mating support 3 are spaced apart, and the swing arm 2 is indirectly connected with the mating support 3 only through the knuckle 5 and the connecting assembly 4.
Specifically, as shown in fig. 5, the knuckle 5 is further provided with a first mounting hole 53 for connecting to a steering gear, and a second mounting hole 54 for mounting a brake caliper.
According to the utility model discloses the vehicle, include according to the utility model discloses a suspension 100 for vehicle of above-mentioned embodiment.
According to the utility model discloses vehicle, through setting up according to the utility model discloses a suspension 100 for vehicle of above-mentioned embodiment. Therefore, in the steering process of the automobile, the strut 1 does not need to rotate along with the steering knuckle 5, so that the internal friction force of a steering system can be effectively reduced, a strut bearing structure in the prior art can be eliminated, abnormal sound caused by torsion of a strut rubber part in the steering process is avoided, the reliability of the suspension 100 can be improved, the service life of the suspension 100 is prolonged, and the reliability of the automobile is improved.
Other configurations and operations of vehicles according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A suspension (100) for a vehicle, comprising:
a support column (1) and a swing arm (2);
the matching support (3), the matching support (3) is fixedly arranged on the pillar (1);
the connecting assembly (4) comprises a first connecting piece (41) and a second connecting piece (42), the first end of the first connecting piece (41) is matched and connected with the first end of the second connecting piece (42) to form a rotating pair, and the second end of the first connecting piece (41) is fixed on the matching support (3);
the steering knuckle (5), steering knuckle (5) are located the below of cooperation support (3), the lower extreme of steering knuckle (5) with swing arm (2) are articulated, the upper end of steering knuckle (5) with the second end fixed connection of second connecting piece (42).
2. The suspension (100) for a vehicle according to claim 1, characterized in that one of said first and second connectors (41, 42) is a ball stud and the other is a ball socket.
3. The suspension (100) for vehicles according to claim 2, characterized in that said first connector (41) is fixed on said mating seat (3) by cooperating with a fastening nut (6), and said second connector (42) is fixed on the upper end of said knuckle (5) by cooperating with a fastening nut (6).
4. Suspension (100) for vehicles according to claim 1, characterized by the fact that said cooperating abutment (3) is removably provided on said strut (1).
5. Suspension (100) for vehicles according to claim 1, characterized in that the mating seat (3) is in a single piece with the strut (1).
6. Suspension (100) for vehicles according to claim 1, characterized in that the mating seat (3) is a forged structure.
7. Suspension fork (100) for vehicles according to claim 1, characterized in that said mating seat (3) comprises a first seat portion (31) and a second seat portion (32) perpendicular and connected to each other, said first seat portion (31) being suitable for fixing said first connection element (41) and said second seat portion (32) being suitable for fixing on said strut (1).
8. The suspension (100) for a vehicle according to claim 7, characterized in that a through hole (311) is provided on the first seat portion (31), the second end of the first link (41) is adapted to pass through the through hole (311) to cooperate with a fastening nut (6) to be fixed on the first seat portion (31), the through hole (311) being formed in one of a triangular shape, a circular shape and a polygonal shape in cross section in a direction away from the knuckle (5).
9. Suspension (100) for vehicles according to any of claims 1 to 8, characterized by the fact that on the swing arm (2) there is a swing arm bulb (21), said swing arm bulb (21) being hinged at the lower end of the knuckle (5) by means of the cooperation with a fastening nut (6).
10. A vehicle, characterized by comprising a suspension (100) according to any one of claims 1-9.
CN202021492425.6U 2020-07-24 2020-07-24 Suspension for vehicle and vehicle with same Active CN212979775U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021492425.6U CN212979775U (en) 2020-07-24 2020-07-24 Suspension for vehicle and vehicle with same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021492425.6U CN212979775U (en) 2020-07-24 2020-07-24 Suspension for vehicle and vehicle with same

Publications (1)

Publication Number Publication Date
CN212979775U true CN212979775U (en) 2021-04-16

Family

ID=75429255

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021492425.6U Active CN212979775U (en) 2020-07-24 2020-07-24 Suspension for vehicle and vehicle with same

Country Status (1)

Country Link
CN (1) CN212979775U (en)

Similar Documents

Publication Publication Date Title
US7712753B2 (en) Joint for vehicle steering and suspension system
US9464663B2 (en) Ball joint
EP2355987A1 (en) Vehicle independent suspension
WO2016029606A1 (en) Steering knuckle connector assembly applicable in linear translation-type front suspension
CN110626137A (en) Rear suspension of heavy-load passenger car
US20120056398A1 (en) Semi-trailer axle and suspension connecting structure
JP5057434B2 (en) Suspension device
CN212979775U (en) Suspension for vehicle and vehicle with same
CN218806105U (en) Universal driving module for front axle and rear axle and automobile
CN107284168B (en) High-efficient swing arm under car
CN216546366U (en) Mining vehicle
CN214057163U (en) Connecting rod and car
CN204774474U (en) A spring support , independent suspension assembly and car for automotive suspension
CN108382459A (en) A kind of front suspension knuckle assembly system
CN211764761U (en) Automobile front swing arm assembly
CN211918305U (en) Front bushing, suspension swing arm assembly and automobile suspension system
JP3154421U (en) Ball joint for vehicle
CN213565313U (en) Rear suspension system and car
CN202782553U (en) Installation structure for vibration-damping device on vehicle axle
CN105015299A (en) Spring support used for automobile suspension, independent suspension assembly and automobile
CN221067702U (en) Suspension control arm and vehicle
CN201231654Y (en) Axle shell monoblock casting type steering drive axle
CN216942563U (en) New energy automobile lower swing arm assembly
CN217705406U (en) Connection structure and car of swing arm and knuckle under car
CN221563213U (en) Double-fork-arm front knuckle structure and vehicle

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant