CN219749622U - Floor mat, cab and working machine - Google Patents

Floor mat, cab and working machine Download PDF

Info

Publication number
CN219749622U
CN219749622U CN202320869840.6U CN202320869840U CN219749622U CN 219749622 U CN219749622 U CN 219749622U CN 202320869840 U CN202320869840 U CN 202320869840U CN 219749622 U CN219749622 U CN 219749622U
Authority
CN
China
Prior art keywords
mat
floor
pad
cab
assembled
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
CN202320869840.6U
Other languages
Chinese (zh)
Inventor
陈军
庄昕
范文博
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.)
Huzhou Sany Loader Co ltd
Original Assignee
Huzhou Sany Loader 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 Huzhou Sany Loader Co ltd filed Critical Huzhou Sany Loader Co ltd
Priority to CN202320869840.6U priority Critical patent/CN219749622U/en
Application granted granted Critical
Publication of CN219749622U publication Critical patent/CN219749622U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Passenger Equipment (AREA)

Abstract

The utility model relates to the technical field of cab supplies, and provides a floor pad, a cab and a working machine. The floor mat includes: the floor pad comprises a first assembled pad and a second assembled pad, the first assembled pad and the second assembled pad are detachably connected, at least one of the first assembled pad or the second assembled pad is provided with an avoidance opening, and the avoidance opening is used for avoiding parts on the floor of the cab. The floor mat forms the integrated configuration of pin-connected panel, can reduce the monoblock area of floor mat, at the process of laying or dismantle the in-process, can be to first pin-connected panel and second pin-connected panel separate operation in proper order, need not to regard as the whole operation with the floor mat to make the laying and the dismantlement of floor mat all simple more laborsaving. In addition, at the in-process of overhauling the driver's cabin, can assemble first pad or second and assemble the pad and dismantle as required, need not to dismantle whole floor pad at every turn, and then make the maintenance more convenient.

Description

Floor mat, cab and working machine
Technical Field
The utility model relates to the technical field of cab supplies, in particular to a floor mat, a cab and a working machine.
Background
In cabs such as loaders and excavators, removable and washable floor mats are often installed for maintaining the cleanliness of the cab floor. The floor pad is provided with avoidance holes for avoiding components such as pedals, a steering gear, a seat and the like in the cab. Floor mats are often required to cover the floor of the entire cab, and thus have a large area. Because the floor mat has a large area, the floor mat is laborious to lay or disassemble, and the floor mat is generally required to be disassembled in the process of overhauling a cab, so that the operation is inconvenient.
Disclosure of Invention
The utility model provides a floor mat, a cab and an operation machine, which are used for solving the defect that the floor mat is laborious to lay or disassemble in the prior art and realizing the effect of reducing the laying difficulty and the disassembling difficulty of the floor mat.
The present utility model provides a floor mat comprising: the floor pad comprises a first assembled pad and a second assembled pad, the first assembled pad and the second assembled pad are detachably connected, at least one of the first assembled pad or the second assembled pad is provided with an avoidance opening, and the avoidance opening is used for avoiding parts on the floor of the cab.
According to the floor mat provided by the utility model, the connecting part of the first assembled mat and the second assembled mat is provided with the bearing part on the side wall of the first assembled mat, the side wall of the second assembled mat is provided with the lap joint part, the lap joint part is used for lap joint with the bearing part, and the lap joint part and the bearing part are respectively provided with at least one positioning bulge and at least one positioning groove for the positioning bulge to be placed in.
According to the floor mat provided by the utility model, the bottom surface of the bearing part is flush with the bottom surface of the first spliced mat, a space is reserved between the top surface of the bearing part and the top surface of the first spliced mat, the top surface of the lap joint part is flush with the top surface of the second spliced mat, and a space is reserved between the bottom surface of the lap joint part and the bottom surface of the second spliced mat.
According to the floor mat provided by the utility model, the bottom of at least one of the first assembled mat or the second assembled mat is provided with the wiring space for wiring.
According to the floor mat provided by the utility model, the wiring space is the wiring groove arranged at the bottom of the first spliced mat or the bottom of the second spliced mat;
or, a flanging is arranged on one side of the first assembled cushion or one side of the second assembled cushion, a space is reserved between the flanging and the bottom surface of the first assembled cushion or the bottom surface of the second assembled cushion, and the space below the flanging forms the wiring space.
According to the floor mat provided by the utility model, at least one of the first assembled mat or the second assembled mat is provided with the first kerf, the first kerf corresponds to the avoiding opening, one end of the first kerf is communicated with the corresponding avoiding opening, and the other end of the first kerf penetrates through the edge of the first assembled mat or the second assembled mat.
According to the floor mat provided by the utility model, the upper surface of at least one of the first spliced mat or the second spliced mat is provided with the reserved sinking groove.
According to the floor mat provided by the utility model, at least one of the first assembled mat or the second assembled mat is provided with the second kerf, the second kerf corresponds to the reserved sinking groove, one end of the second kerf is communicated with the corresponding reserved sinking groove, and the other end of the kerf penetrates through the outer edge of the first assembled mat or the second assembled mat.
The utility model also provides a cab, which comprises the floor pad, wherein the first assembling pad is arranged at the front part of the floor of the cab, and the second assembling pad is arranged at the rear part of the floor of the cab.
The utility model also provides a work machine comprising a floor mat as described above, or a cab as described above.
The floor mat comprises a first spliced mat and a second spliced mat which are detachably connected, wherein at least one of the first spliced mat or the second spliced mat is provided with an avoidance opening for avoiding parts on the floor of a cab.
So set up for the floor mat forms pin-connected panel's integrated configuration, can reduce the monolithic area of floor mat, at laying process or dismantlement in-process, can be to first pin-connected panel and second pin-connected panel separate operation in proper order, be about to the floor mat to become whole zero, dismouting in proper order need not to regard as whole operation with the floor mat, thereby make the laying and the dismantlement of floor mat all simple laborsaving more. In addition, at the in-process of overhauling the driver's cabin, can assemble first pad or second and assemble the pad and dismantle as required, need not to dismantle whole floor pad at every turn, and then make the maintenance more convenient.
The cab and the working machine provided by the utility model comprise all the advantages of the floor mat because the floor mat provided by the utility model is included.
Drawings
In order to more clearly illustrate the utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of the construction of a floor mat provided in some embodiments of the utility model;
FIG. 2 is a cross-sectional view A-A of FIG. 1 provided in some embodiments of the utility model;
fig. 3 is an enlarged view at B in fig. 2 provided in some embodiments of the utility model.
Reference numerals:
1. a first split pad; 1-1, a brake pedal avoiding opening; 1-2, a steering gear avoiding port; 1-3, an accelerator pedal avoiding opening; 1-4, flanging; 1-5, first lancing; 1-6, a bearing part; 2. a second splice pad; 2-1, an anti-slip structure; 2-2, reserving a sinking groove for the hand brake; 2-3, a seat avoiding opening; 2-4, reserving a sinking groove on the operating handle; 2-5, reserving a sinking groove for the pilot pipe; 2-6, second lancing; 2-7, overlap joint; 3. and (3) seaming.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In cabs such as loaders and excavators, removable and washable floor mats are often installed for maintaining the cleanliness of the cab floor. The floor pad is provided with avoidance holes for avoiding components such as pedals, a steering gear, a seat and the like in the cab. Floor mats are often required to cover the floor of the entire cab, and thus have a large area. Because the floor mat has a large area, the floor mat is laborious to lay or disassemble, and the floor mat is generally required to be disassembled in the process of overhauling a cab, so that the operation is inconvenient. In order to solve the problem that the floor mat is laborious to lay or disassemble in the prior art and achieve the effect of reducing the laying difficulty and the disassembling difficulty of the floor mat, the utility model provides the floor mat, the cab and the operation machine.
The floor mat provided in the embodiment of the present utility model is described below with reference to fig. 1 to 3.
In particular, the floor mat is used to cover the floor of the cab. The floor mat comprises a first split mat 1 and a second split mat 2. The first split mat 1 and the second split mat 2 are detachably connected. Alternatively, the first split mat 1 is arranged in front of the floor of the cab and the second split mat 2 is arranged in rear of the floor of the cab, i.e. after both the first split mat 1 and the second split mat 2 have been laid in the cab, the joint 3 between the first split mat 1 and the second split mat 2 extends to both sides of the cab. At least one of the first split mat 1 or the second split mat 2 is provided with an avoidance opening for avoiding a component on the floor of the cab. Optionally, referring to fig. 1, a first assembled pad 1 is provided with a brake pedal avoiding port 1-1, a steering wheel avoiding port 1-2 and an accelerator pedal avoiding port 1-3, which are respectively used for avoiding a brake pedal, a steering wheel and an accelerator pedal in a cab. The second spliced mat 2 is provided with a seat avoiding opening 2-3 for avoiding a mounting bracket of the seat.
The floor mat provided by the utility model is arranged in the way that the floor mat forms an assembled combined structure, the single area of the floor mat can be reduced, and the first and second assembled mats 1 and 2 can be disassembled independently in sequence in the laying process or the disassembling process, namely, the floor mat is integrated into zero and is disassembled in sequence, and the floor mat is not required to be used as an integral operation, so that the laying and the disassembling of the floor mat are simpler and more labor-saving. In addition, at the in-process of overhauling the driver's cabin, can dismantle first piece together dress pad 1 or second piece together dress pad 2 as required, need not to dismantle whole floor pad at every turn, and then make the maintenance more convenient.
Referring to fig. 3, in some embodiments of the present utility model, at the junction of the first split mat 1 and the second split mat 2, the side wall of the first split mat 1 is provided with a carrying portion 1-6, and the side wall of the second split mat 2 is provided with a lap portion 2-7. The overlapping portion 2-7 is used for overlapping the carrying portion 1-6, for example, the overlapping portion 2-7 overlaps the top surface of the carrying portion 1-6. The lap joint part 2-7 and the bearing part 1-6 are respectively provided with a corresponding positioning protrusion and a positioning groove for placing the positioning protrusion, for example, the lap joint part 2-7 and the bearing part 1-6 are respectively provided with at least one positioning protrusion and at least one positioning groove. The positioning protrusions and the positioning grooves of the lap joint parts 2-7 are respectively in plug-in fit with the positioning grooves and the positioning protrusions of the bearing parts 1-6. The fixed connection can be achieved through the insertion and connection of the positioning protrusion and the positioning groove, and the limiting effect is achieved.
In the process of laying the floor mat, the first assembled mat 1 can be laid first, then the second assembled mat 2 can be laid, the lap joint part 2-7 of the second assembled mat 2 is lapped on the bearing part 1-6 of the first assembled mat 1, and the positioning protrusions are placed into the corresponding positioning grooves. So set up, can conveniently connect first piece together dress pad 1 and second piece together dress pad 2 to through the protruding and positioning groove mutually support of location, can make first piece together dress pad 1 and second piece together dress pad 2 spacing each other, can avoid first piece together dress pad 1 and second piece together dress pad 2 mutually separate, and then guarantee the structural stability of floor pad.
Referring to fig. 3, in some embodiments provided by the present utility model, the bottom surface of the carrying portion 1-6 is flush with the bottom surface of the first split pad 1, and a space is provided between the top surface of the carrying portion 1-6 and the top surface of the first split pad 1. The top surface of the lap joint part 2-7 is flush with the top surface of the second spliced mat 2, and a space is reserved between the bottom surface of the lap joint part 2-7 and the bottom surface of the second spliced mat 2. The bottom surface of the lap joint part 2-7 is erected on the top surface of the bearing part 1-6. The top surface of the first split mat 1 and the top surface of the second split mat 2 are surfaces that are disposed upward when laid in the cab. The bottom surface of the second split mat 2 and the bottom surface of the second split mat 2 are surfaces that contact the floor of the cab when laid in the cab. So set up, as shown in fig. 3, after first piece together dress pad 1 and second piece together dress pad 2 overlap joint, the holistic roughness of floor pad is higher, and the laying effect of floor pad is better.
Further, the space between the bottom surface of the overlap portion 2-7 and the bottom surface of the second split mat 2 is equal to the thickness of the carrying portion 1-6, and the space between the top surface of the carrying portion 1-6 and the top surface of the first split mat 1 is equal to the thickness of the overlap portion 2-7. As shown in fig. 3, the thickness of the bearing portion 1-6 refers to the dimension of the bearing portion 1-6 in the left-right direction in the drawing, and the thickness of the lap portion 2-7 refers to the dimension of the lap portion 2-7 in the left-right direction in the drawing.
Further, as shown in fig. 3, the width of the carrying part 1-6 is equal to the width of the overlap part 2-7, so that the joint 3 between the first and second split mats 1, 2 is smaller after the two have been connected. As shown in fig. 3, the width of the carrying portion 1-6 refers to the dimension of the carrying portion 1-6 in the vertical direction in the drawing. Similarly, the width of the lap portion 2-7 refers to the dimension of the lap portion 2-7 in the vertical direction in the drawing.
In some embodiments provided by the utility model, the width and the height of the positioning protrusion are respectively consistent with the width and the depth of the positioning groove, so as to ensure that the positioning protrusion and the positioning groove can be tightly combined.
In some embodiments provided by the present utility model, the bottom of at least one of the first or second split mats 1, 2 is provided with a routing space for routing. The wiring harness of the cab is laid in the wiring space at the bottom of the first spliced mat 1 or the second spliced mat 2, so that the wiring harness can be prevented from supporting the floor mat to enable the floor mat to be protruded, the wiring harness can be prevented from leaking outside, the whole inside the cab is compact and tidy, and meanwhile, the effect of protecting the wiring harness is also achieved.
In some embodiments provided by the present utility model, the routing space is a routing slot provided at the bottom of the first split mat 1 or the bottom of the second split mat 2, i.e. the wiring harness in the cab may be routed along the routing slot of the first split mat 1 or the routing slot of the second split mat 2.
Of course, the wiring space is not limited to the form provided with the wiring groove described above. For example, referring to FIG. 2, in other embodiments provided by the present utility model, one side of the first split pad 1 or one side of the second split pad 2 is provided with cuffs 1-4. The flanges 1-4 are spaced from the bottom surface of the first assembled cushion 1 or the bottom surface of the second assembled cushion 2, and the space below the flanges 1-4 forms a wiring space. For example, after the floor mat is mounted on the floor of the cab, the flange 1-4 is abutted against the skin in the cab, and the wire harness may be laid along the space formed by the flange 1-4 and the skin. For example, the side of the first split mat 1 remote from the second split mat 2 is provided with a flange 1-4, which flange 1-4 can cooperate with the front surrounding skin of the cab to form a wiring space.
In some embodiments provided by the present utility model, at least one of the first or second split pad 1, 2 is provided with a first slit 1-5. The first slits 1-5 correspond to the avoiding openings, for example, each avoiding opening is provided with a corresponding first slit 1-5. One end of the first cutting joint 1-5 is communicated with the corresponding avoiding opening, and the other end of the first cutting joint 1-5 penetrates through the edge of the first spliced mat 1 or the edge of the second spliced mat 2. By arranging the first kerf 1-5 at the avoiding opening, the avoiding opening is more convenient to be sleeved on a corresponding part in the cab when the first assembled cushion 1 and the second assembled cushion 2 are installed. Specifically, a brake pedal avoiding opening 1-1, a steering gear avoiding opening 1-2, an accelerator pedal avoiding opening 1-3 and a seat avoiding opening 2-3 are respectively provided with a first kerf 1-5 corresponding to each other.
Further, as shown in fig. 1, the first slit 1-5 extends in the front-rear direction of the cab.
In some embodiments provided by the present utility model, at least one of the upper surface of the first split mat 1 or the upper surface of the second split mat 2 is provided with a pre-reserved sink. Because of the optional demands on the function of the work machine, some components may or may not be installed in the cab, or different types of work machines may be configured differently and may involve different functional components. If the corresponding floor pad is developed for each type of cab, the development cost and the manufacturing cost are higher, the reserved sinking grooves can correspond to some selected components or components of other types of cabs through the arrangement of the reserved sinking grooves, and if the corresponding reserved sinking grooves are required to be avoided, the bottoms of the reserved sinking grooves can be opened, so that the reserved sinking grooves can be formed into through grooves. By the arrangement, the floor mat can be compatible with more types of cabs, and the development cost and the manufacturing cost of the floor mat are reduced. The reserved sinking groove is arranged on the upper surface of the floor mat, so that a user can conveniently determine the position of the reserved sinking groove when the reserved sinking groove is opened.
Referring to fig. 1, optionally, at least one of an operation handle reserved sink 2-4, a pilot pipe reserved sink 2-5 or a hand brake reserved sink 2-2 is provided on the second split mat 2.
Alternatively, the depth of the reserve sink may be set to 0.2mm-0.8mm, for example, the depth of the reserve sink is set to 0.5mm.
In some embodiments provided by the present utility model, at least one of the first or second split pad 1, 2 is provided with a second slit 2-6. The second kerfs 2-6 correspond to the reserved countersinks, i.e. each reserved countersink is provided with a corresponding second wind. One end of the second cutting seam 2-6 is communicated with the corresponding reserved sinking groove, and the other end of the second cutting seam 2-6 penetrates through the outer edge of the first spliced pad 1 or the second spliced pad 2. By arranging the second kerfs 2-6, the reserved sinking grooves are conveniently sleeved on the corresponding parts after being drilled through.
In some embodiments of the present utility model, the second split mat 2 is provided with an anti-slip structure 2-1. For example, the anti-skid structure 2-1 is provided as a stud or anti-skid pattern. The antiskid structure 2-1 corresponds to a doorway of the cab. So set up, when the driver enters the driver's cabin, trample on anti-skidding structure 2-1, anti-skidding structure 2-1 can reduce the problem that the sole slipped.
The embodiment of the utility model also provides a cab.
Specifically, the cab includes a floor mat as described above. The first split mat 1 is arranged in front of the floor of the cab and the second split mat 2 is arranged in rear of the floor of the cab.
It should be noted that the cab includes the floor mat and also includes all the advantages of the floor mat, which are not described herein.
The embodiment of the utility model also provides a working machine.
Specifically, the work machine includes a floor mat as described above or a cab as described above.
It should be noted that, the working machine includes the floor mat and also includes all the advantages of the floor mat, which are not described herein. In addition, work machines include, but are not limited to, loaders or excavators. Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. The utility model provides a floor pad, its characterized in that is used for covering the floor of driver's cabin, the floor pad includes first piece together dress pad (1) and second piece together dress pad (2), first piece together dress pad (1) with second piece together dress pad (2) can dismantle the connection, first piece together dress pad (1) or at least one of second piece together dress pad (2) is equipped with dodges the mouth, dodge the mouth and be used for dodging the part on the floor of driver's cabin.
2. Floor mat according to claim 1, characterized in that at the junction of the first and the second mat (1, 2) the side wall of the first mat (1) is provided with a carrier part (1-6), the side wall of the second mat (2) is provided with a lap part (2-7), the lap part (2-7) is used for lap joint with the carrier part (1-6), the lap part (2-7) and the carrier part (1-6) are provided with at least one positioning protrusion and at least one positioning groove into which the positioning protrusion can be placed.
3. -floor mat according to claim 2, characterized in that the bottom surface of the carrier part (1-6) is flush with the bottom surface of the first mat (1), that the top surface of the carrier part (1-6) is spaced from the top surface of the first mat (1), that the top surface of the overlap part (2-7) is flush with the top surface of the second mat (2), and that the bottom surface of the overlap part (2-7) is spaced from the bottom surface of the second mat (2).
4. A floor mat according to any of claims 1-3, characterized in that the bottom of at least one of the first (1) or the second (2) split mat is provided with routing spaces for routing.
5. -floor mat according to claim 4, characterized in that the routing space is a routing channel provided at the bottom of the first or second mat (1, 2);
or, a flange (1-4) is arranged on one side of the first assembled pad (1) or one side of the second assembled pad (2), a space is reserved between the flange (1-4) and the bottom surface of the first assembled pad (1) or the bottom surface of the second assembled pad (2), and the space below the flange (1-4) forms the wiring space.
6. -floor mat according to any of the claims 1 to 3, characterized in that at least one of the first or second split mat (1, 2) is provided with a first slit (1-5), which first slit (1-5) corresponds to the relief opening, and that one end of the first slit (1-5) communicates with the respective relief opening, and that the other end of the first slit (1-5) extends through the edge of the first or second split mat (1, 2).
7. A floor mat according to any one of claims 1-3, characterized in that the upper surface of at least one of the first split mat (1) or the second split mat (2) is provided with a pre-reserved countersink.
8. -floor mat according to claim 7, characterized in that at least one of the first or second mat (1, 2) is provided with a second slit (2-6), which second slit (2-6) corresponds to the reserve sink, one end of which second slit (2-6) communicates with the corresponding reserve sink, the other end of which second slit (2-6) penetrates the outer edge of the first or second mat (1, 2).
9. Cab, characterized in that it comprises a floor mat according to any one of claims 1-8, said first mat (1) being arranged in front of the floor of the cab and said second mat (2) being arranged in rear of the floor of the cab.
10. A work machine comprising a floor mat according to any one of claims 1-8 or a cab according to claim 9.
CN202320869840.6U 2023-04-18 2023-04-18 Floor mat, cab and working machine Active CN219749622U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320869840.6U CN219749622U (en) 2023-04-18 2023-04-18 Floor mat, cab and working machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320869840.6U CN219749622U (en) 2023-04-18 2023-04-18 Floor mat, cab and working machine

Publications (1)

Publication Number Publication Date
CN219749622U true CN219749622U (en) 2023-09-26

Family

ID=88081829

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320869840.6U Active CN219749622U (en) 2023-04-18 2023-04-18 Floor mat, cab and working machine

Country Status (1)

Country Link
CN (1) CN219749622U (en)

Similar Documents

Publication Publication Date Title
CN219749622U (en) Floor mat, cab and working machine
EP2886725B1 (en) Construction machine
US9994158B2 (en) Working vehicle
JP2010280293A (en) Vehicle body floor structure
CN218661490U (en) Armrest box of engineering machinery
JP6830803B2 (en) Footrests and floor mats for construction machinery
JPH0455466Y2 (en)
JP2010195101A (en) Working vehicle
KR20010083172A (en) Vehicle Frame Structure
JP2021008238A (en) Vehicle body understructure
JP3592148B2 (en) Floor mat for construction machinery
JPS644574Y2 (en)
JP6126356B2 (en) Floor step structure of riding rice transplanter
JP7487634B2 (en) Rear bumper structure for vehicle
JP6119597B2 (en) Construction machinery
TW201345769A (en) Railway vehicle
CN219544910U (en) Front floor assembly of vehicle and vehicle
JP3450308B2 (en) Pedal bracket structure
KR20140113670A (en) Pilot valve attachment structure of construction machine
JP2823735B2 (en) Riding paddy working machine
CN210555143U (en) Upper guard plate of B column
JP6504067B2 (en) Substructure of vehicle body
JPH1121950A (en) Driver's seat floor mat
JPS6231332Y2 (en)
JPS5826218Y2 (en) tractor

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant