CN213473357U - Connecting support and scooter with same - Google Patents
Connecting support and scooter with same Download PDFInfo
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- CN213473357U CN213473357U CN202022066579.5U CN202022066579U CN213473357U CN 213473357 U CN213473357 U CN 213473357U CN 202022066579 U CN202022066579 U CN 202022066579U CN 213473357 U CN213473357 U CN 213473357U
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Abstract
The utility model belongs to the technical field of the car of riding instead of walk, concretely relates to linking bridge and have linking bridge's car of riding instead of walk, this linking bridge is used for connecting first part and second part, and this linking bridge includes first connecting piece, second connecting piece and atress piece, and first connecting piece is used for being connected with first part, and the second connecting piece is used for being connected with the second part, and first connecting piece and second connecting piece are connected with the both ends of atress piece respectively, form the acute angle between atress piece and the second connecting piece. According to the utility model discloses linking bridge, with linking bridge as the connection biography power structure between first part and the second part, first connecting piece is connected with first part, and the second connecting piece is connected with the second part, is connected through the atress piece between first connecting piece and the second connecting piece, forms the acute angle between atress piece and the second connecting piece, is streamlined molding, guarantees to have more lightweight under the prerequisite of sufficient intensity.
Description
Technical Field
The utility model belongs to the technical field of the car of riding instead of walk, concretely relates to linking bridge and have linking bridge's car of riding instead of walk.
Background
This structure provides background information related to the present disclosure only and is not necessarily prior art.
The scooter is an emerging tool for riding instead of walk in recent years, and the application range of the scooter relates to the old people, the patients, the people with physical defects and other needed groups. For these groups, the mobility scooter needs sufficient safety performance, such as sufficient impact resistance, shock resistance and stability, and also sufficient portability for easy handling, storage and transportation.
The scooter at least comprises a seat and a frame, the seat is directly and fixedly connected with the frame, the seat can not be detached, the stability of the whole scooter is insufficient when the scooter runs on the road, the use feeling of a user is influenced, and the seat and the frame are directly connected when being manufactured, so that the difficulty is high. When the seat and the frame are damaged, the whole vehicle needs to be replaced, and the cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the manufacturing difficulty is large and the replacement cost is high because of seat and frame can not dismantle and lead to at least among the prior art. The purpose is realized by the following technical scheme:
the utility model discloses a first aspect provides a linking bridge for connect first part and second part, include:
a first connector for connection with the first component;
a second connector for connection with the second component;
the first connecting piece and the second connecting piece are connected with two ends of the stressed piece respectively, and an acute angle is formed between the stressed piece and the second connecting piece.
According to the utility model discloses linking bridge is as the connection power transmission structure between first part and the second part with linking bridge, divide into two parts with first part and second part, can carry out solitary manufacturing, has reduced the manufacturing degree of difficulty. When the first component or the second component is damaged, only one of the first component or the second component needs to be replaced, so that the replacement cost is reduced. As a connecting force transmission structure between the first component and the second component, a first connecting piece of the connecting support is connected with the first component, a second connecting piece is connected with the second component, the first connecting piece and the second connecting piece are connected through a stress piece, an acute angle is formed between the stress piece and the second connecting piece, and the connecting support is in a streamline shape and is lighter under the premise of ensuring enough strength.
In some embodiments of the present invention, the force receiving member includes:
a first force-bearing plate;
the second stress plate is connected to one side of the first stress plate and extends in the direction far away from the second connecting piece;
and the third stress plate is connected to the other side of the first stress plate and extends towards the direction far away from the second connecting piece, and the second stress plate and the third stress plate are symmetrical relative to the central axis of the second component.
In some embodiments of the present invention, the force-bearing member further includes at least one reinforcing rib, the reinforcing rib is disposed on one side of the first force-bearing plate away from the second connecting member, and the first connecting member and the second connecting member are respectively connected to two ends of the reinforcing rib.
In some embodiments of the present invention, at least one of the reinforcing ribs includes a first reinforcing rib and a second reinforcing rib, the first reinforcing rib is parallel to the second force-bearing plate, the second reinforcing rib is parallel to the third force-bearing plate, and the first reinforcing rib and the second reinforcing rib are symmetrical with respect to a central axis of the second component.
In some embodiments of the present invention, the width of the first force-bearing plate gradually increases from the direction of the first connecting member to the direction of the second connecting member.
In some embodiments of the invention, the first connector comprises an open end and a closed end, the first part being inserted by the open end and abutting the closed end.
In some embodiments of the present invention, the second connector comprises:
a connecting plate;
the third reinforcing rib is connected to one side, away from the first connecting piece, of the connecting plate;
and the fourth reinforcing rib is connected to one side of the connecting plate, which is far away from the first connecting piece, and the third reinforcing rib and the fourth reinforcing rib are symmetrical relative to the central axis of the second part.
In some embodiments of the present invention, the first connecting member, the force-receiving member and the second connecting member are a unitary structure.
In some embodiments of the present invention, the connecting bracket is further used for connecting a third component and a fourth component;
the second connecting piece is provided with a first connecting portion and a second connecting portion, the first portion of the connecting support, the third component and the fourth component is connected through the first connecting portion, and the second portion of the connecting support and the fourth component is connected through the second connecting portion.
The second aspect of the utility model provides a car of riding instead of walk, include:
a seat;
a frame comprising a front frame and a rear frame;
the connecting bracket is the connecting bracket of any one of the technical schemes;
the seat is connected to the first connecting piece of the connecting support, and the front frame and the rear frame are connected to the second connecting piece of the connecting support.
According to the utility model discloses car of riding instead of walk and above-mentioned linking bridge have the same advantage, no longer describe here.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like elements throughout. In the drawings:
fig. 1 is a schematic perspective view of the connecting bracket of the present invention;
FIG. 2 is a schematic perspective view of the connecting bracket of FIG. 1 in another orientation;
FIG. 3 is a front view of FIG. 1;
FIG. 4 is a schematic cross-sectional view A-A of FIG. 3;
FIG. 5 is a top view of FIG. 2;
FIG. 6 is a model view of the connecting bracket of the present invention;
FIG. 7 is a force analysis diagram of the attachment bracket shown in FIG. 6;
FIG. 8 is a force analysis diagram of the attachment bracket of FIG. 6 in another orientation;
fig. 9 is a schematic view of a partial structure of a scooter according to an embodiment of the present invention.
The reference symbols in the drawings denote the following:
1. a first connecting member; 11. an open end; 12. a closed end;
2. a second connecting member; 21. a connecting plate; 22. a third reinforcing rib; 23. a fourth reinforcing rib; 24. a first connection portion; 25. a second connecting portion;
3. a force-receiving member; 31. a first force-bearing plate; 32. a second force-bearing plate; 33. a third force-bearing plate; 34. a first reinforcing rib; 35. a second reinforcing rib;
4. a front frame;
5. a rear frame; 51. a first region; 52. a second region.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof.
Although the terms first, second, third, etc. may be used herein to describe various elements, structures, regions, layers and/or structural sections, these elements, structures, regions, layers and/or structural sections should not be limited by these terms. These terms may be only used to distinguish one element, structure, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, structure, region, layer or section discussed below could be termed a second element, structure, region, layer or section without departing from the teachings of the example embodiments.
For convenience in description, spatially relative terms, such as "inner", "outer", "lower", "above", "over", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1 to 5, a connection bracket according to an embodiment of the present invention includes:
a first connecting member 1, the first connecting member 1 being used for connecting with a first component;
a second connector 2, the second connector 2 is used for connecting with a second component;
the stress piece 3, the first connecting piece 1 and the second connecting piece 2 are respectively connected with two ends of the stress piece 3, and an acute angle is formed between the stress piece 3 and the second connecting piece 2.
According to the utility model discloses linking bridge is as the connection power transmission structure between first part and the second part with linking bridge, divide into two parts with first part and second part, can carry out solitary manufacturing, has reduced the manufacturing degree of difficulty. When the first component or the second component is damaged, only one of the first component or the second component needs to be replaced, so that the replacement cost is reduced. As a connecting force transmission structure between a first component and a second component, a first connecting piece 1 of a connecting support is connected with the first component, a second connecting piece 2 is connected with the second component, the first connecting piece 1 is connected with the second connecting piece 2 through a stress piece 3, an acute angle is formed between the stress piece 3 and the second connecting piece 2, and the connecting support is in a streamline shape and is lighter under the premise of ensuring enough strength.
It should be noted that the first component and the second component may be any two mechanical parts that need to be connected, and are not limited to the fields of general machinery, motor vehicles, aerospace, household appliances, medical instruments, and the like. In the following, the connecting bracket is taken as an example of a connecting member between a seat and a frame of a scooter, the first member is the seat, the second member is the frame including a front frame 4 and a rear frame 5, the third member is the front frame 4, and the fourth member is the rear frame 5.
In some embodiments of the present invention, as shown in fig. 2 to 5, the force-receiving member 3 includes a first force-receiving plate 31, a second force-receiving plate 32, and a third force-receiving plate 33, one end of the first force-receiving plate 31, the second force-receiving plate 32, and the third force-receiving plate 33 is connected to the first connecting member 1, and the other end is connected to the second connecting member 2. The second stress plate 32 and the third stress plate 323 are symmetrical to the central axis of the frame, the symmetrical design of the second stress plate 32 and the third stress plate 33 enables the supporting force of the connecting bracket pair to be uniform, the second stress plate 32 and the third stress plate 33 are connected to two sides of the first stress plate 31, the first stress plate 31 is regarded as a quadrilateral structure, the first connecting piece 1 and the second connecting piece 2 are connected to two opposite sides of the first stress plate 31, the second stress plate 32 and the third stress plate 33 are connected to two opposite sides of the first stress plate 31, and a structure that the first connecting piece 1, the second stress plate 32, the second connecting piece 2 and the third stress plate 33 are in tail connection on the first stress plate 31 is formed. The second stress plate 32 and the third stress plate 33 both extend in the direction departing from the second connecting piece 2, and the first stress plate 31, the first connecting piece 1, the second stress plate 32, the second connecting piece 2 and the third stress plate 33 enclose to form a cavity.
Wherein the second force-bearing plate 32 and the first force-bearing plate 31 may form an acute angle, a right angle or an obtuse angle, and exemplarily, in one embodiment, the second force-bearing plate 32 and the first force-bearing plate 31 form a right angle. The third force-bearing plate 33 may form an acute angle, a right angle or an obtuse angle with the first force-bearing plate 31, and for example, in one embodiment, the third force-bearing plate 33 forms a right angle with the first force-bearing plate 31.
In some embodiments of the present invention, in order to further increase the strength and rigidity of the force-receiving member 3, at least one reinforcing rib may be further provided on the force-receiving member 3. The reinforcing rib can be arranged on one side of the first stress plate 31, which is far away from the second connector 2, and also can be arranged on one side of the first stress plate 31, which is far towards the second connector 2. Illustratively, as shown in fig. 2 to 5, in one embodiment, a reinforcing rib is disposed on a side of the first force-bearing plate 31 facing away from the second connector 2, and the first connector 1 and the second connector 2 are respectively connected to both ends of the reinforcing rib.
In some embodiments of the present invention, the number of the reinforcing ribs may be one, two or more, for example, in one embodiment, as shown in fig. 2 to 5, the number of the reinforcing ribs is two, that is, the first reinforcing rib 34 and the second reinforcing rib 35, the first reinforcing rib 34 is parallel to the second force-bearing plate 32, the second reinforcing rib 35 is parallel to the third force-bearing plate 33, and the first reinforcing rib 34 and the second reinforcing rib 35 are symmetrical with respect to the central axis of the frame. A first force transmission channel is formed between the first reinforcing rib 34 and the second stress plate 32, a second force transmission channel is formed between the first reinforcing rib 34 and the second reinforcing rib 35, a third force transmission channel is formed between the second reinforcing rib 35 and the third stress plate 33, and the first force transmission channel and the third force transmission channel are symmetrical relative to the central axis of the frame.
Wherein the first reinforcing rib 34 and the first force-bearing plate 31 may form an acute angle, a right angle or an obtuse angle, and exemplarily, in one embodiment, the first reinforcing rib 34 and the first force-bearing plate 31 form a right angle. The second reinforcing rib 35 may form an acute angle, a right angle or an obtuse angle with the first force-bearing plate 31, and exemplarily, in one embodiment, the second reinforcing rib 35 forms a right angle with the first force-bearing plate 31.
In some embodiments of the present invention, in order to further realize light weight on the premise of ensuring sufficient strength, the first connecting member 1 points to the direction of the second connecting member 2, as shown in fig. 1 to 5, the width of the first force-bearing plate 31 is gradually increased. Along with the increase of the width, the gravity center of the connecting bracket is closer to the frame, and the overall stability of the scooter is improved.
In some embodiments of the present invention, the first connecting member 1 is used for being connected to a seat, and when the seat is assembled with the first connecting member 1, in order to reduce the operation difficulty of the user, as shown in fig. 2 to 5, the first connecting member 1 includes an open end 11 and a closed end 12, the seat is inserted from the open end 11 and abuts against the closed end 12, the closed end 12 blocks the movement of the seat, and the relative position between the seat and the connecting bracket is locked by other parts.
In some embodiments of the present invention, as shown in fig. 1 to 4, the second connector 2 includes a connecting plate 21, a third reinforcing rib 22 and a fourth reinforcing rib 23, and the first force-bearing plate 31, the second force-bearing plate 32, the third force-bearing plate 33, the first reinforcing rib 34 and the second reinforcing rib 35 are respectively connected to the connecting plate 21. The third strengthening rib 22 is connected in the one side that deviates from first connecting piece 1 of connecting plate 21, and the fourth strengthening rib 23 is connected in the one side that deviates from first connecting piece 1 of connecting plate 21, and third strengthening rib 22 and fourth strengthening rib 23 are symmetrical for the axis of frame, and the symmetrical design of third strengthening rib 22 and fourth strengthening rib 23 makes the linking bridge present the homogeneity to the holding power of seat. The first force-bearing plate 31 and the connecting plate 21 may form an acute angle, a right angle or an obtuse angle, and for example, in one embodiment, the first force-bearing plate 31 and the connecting plate 21 form an obtuse angle. The second force-bearing plate 32 and the connecting plate 21 may form an acute angle, a right angle or an obtuse angle, and in one embodiment, the second force-bearing plate 32 and the connecting plate 21 form a right angle. The third force-bearing plate 33 may form an acute angle, a right angle or an obtuse angle with the connecting plate 21, and for example, in one embodiment, the third force-bearing plate 33 forms a right angle with the connecting plate 21. The first reinforcing beads 34 may form an acute angle, a right angle, or an obtuse angle with the connecting plate 21, and for example, in one embodiment, the first reinforcing beads 34 form a right angle with the connecting plate 21. The second reinforcing rib 35 may form an acute angle, a right angle or an obtuse angle with the connecting plate 21, and for example, in one embodiment, the second reinforcing rib 35 forms a right angle with the connecting plate 21.
In some embodiments of the present invention, the connecting bracket may be configured to connect the third member to the fourth member in addition to being a connecting force transfer structure between the first member and the second member. The first parts of the connecting bracket, the third part and the fourth part are connected by a first connecting portion 24, and the second parts of the connecting bracket and the fourth part are connected by a second connecting portion 25. As shown in fig. 9, the second connecting member 2 is provided with a first connecting portion 24 and a second connecting portion 25, the first portions 51 of the connecting bracket, the front frame and the rear frame are connected by the first connecting portion 24, the second portions 52 of the connecting bracket and the rear frame 5 are connected by the second connecting portion 25, and the seat, the front frame 4 and the rear frame 5 are connected by the connecting bracket, so that the assembling difficulty and the number of connecting members are reduced compared with the prior art. The seat, the front frame and the rear frame are connected and fixed through the connecting support, other fasteners do not need to be arranged, and the lightweight degree is further improved.
In order to increase the connection stability of the front frame 4, the rear frame 5 and the seat, the first connection portion 24 and the second connection portion 25 may be one, two or more, and in one embodiment, the first connection portion 24 and the second connection portion 25 are both two.
The utility model discloses an in some embodiments, can be independent part between first connecting piece 1, atress piece 3 and the second connecting piece 2, realize connecting through screw or bolt, also can be a body structure between first connecting piece 1, atress piece 3 and the second connecting piece 2, realize through bonding, welding or die-casting fashioned mode. Illustratively, in one embodiment, the first connecting member 1, the force-receiving member 3 and the second connecting member 2 are of an integral structure. The connecting bracket is made of ADC12 aluminum material, and the yield strength is 170 Mpa.
According to the utility model discloses car of riding instead of walk of another embodiment includes:
a seat;
a frame including a front frame 4 and a rear frame 5;
the connecting bracket is the connecting bracket in any embodiment;
the seat is connected to the first connecting piece 1 of the connecting bracket, and the front frame 4 and the rear frame 5 are connected to the second connecting piece 2 of the connecting bracket.
According to the utility model discloses car of riding instead of walk and above-mentioned linking bridge have the same advantage, no longer describe here. The frame comprises a front frame 4 and a rear frame 5, and the frame is divided into two parts to be manufactured, so that the difficulty in processing and manufacturing is reduced.
In some embodiments of the present invention, as shown in fig. 6, the seat includes a seat board, a plug connector and an adjusting member, the seat board is used for the user to take, and the plug connector and the seat board are connected by four bolts, i.e. four connecting points are formed between the plug connector and the seat board, which are A, B, C and D respectively. The plug connector is connected on the bedplate, and the regulating part passes through bolt or screw connection on the plug connector, and it is E that to form a tie point between regulating part and the plug connector promptly. The adjusting part is inserted from the open end 11 of the first connecting part 1 of the connecting bracket and is abutted against the closed end 12, in order to prevent the seat from rotating relative to the frame, the adjusting part is connected with the first connecting part 1 through a fastener such as a bolt or a screw, and the relative position between the seat and the connecting bracket is locked, namely a connecting point F is formed between the adjusting part and the first connecting part 1. A connection point G is formed between the first connection portion 24 and the front frame 4. Carrying out finite element stress analysis on the connecting support, adopting ANSYS software, applying bolt pretightening force 7000N to the A-D connecting point, applying bolt pretightening force 10000N to the E connecting point and the F connecting point, and applying 1250N to the quarter area of the seat, as shown in figures 7 to 8, the light color area is an area with larger stress, the dark color area is an area with smaller stress, the maximum stress of the simulated connecting support is 103.8Mpa, the safety factor is 1.6, and through analysis, the connecting support has enough strength and rigidity and is safe to use.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A connecting bracket for connecting a first member to a second member, comprising:
a first connector for connection with the first component;
a second connector for connection with the second component;
the first connecting piece and the second connecting piece are connected with two ends of the stressed piece respectively, and an acute angle is formed between the stressed piece and the second connecting piece.
2. The attachment bracket of claim 1, wherein the force-bearing member comprises:
a first force-bearing plate;
the second stress plate is connected to one side of the first stress plate and extends in the direction far away from the second connecting piece;
and the third stress plate is connected to the other side of the first stress plate and extends towards the direction far away from the second connecting piece, and the second stress plate and the third stress plate are symmetrical relative to the central axis of the second component.
3. The connecting bracket of claim 2, wherein the force-bearing member further comprises at least one reinforcing rib, the reinforcing rib is disposed on a side of the first force-bearing plate facing away from the second connecting member, and the first connecting member and the second connecting member are respectively connected to both ends of the reinforcing rib.
4. The attachment bracket of claim 3, wherein the at least one reinforcement rib includes a first reinforcement rib and a second reinforcement rib, the first reinforcement rib being parallel to the second force plate, the second reinforcement rib being parallel to the third force plate, and the first reinforcement rib and the second reinforcement rib being symmetrical about a central axis of the second component.
5. The attachment bracket of claim 2, wherein the width of the first force-bearing plate increases gradually from the first attachment member toward the second attachment member.
6. The attachment bracket of claim 1, wherein the first connector includes an open end and a closed end, the first member being inserted through the open end and abutting the closed end.
7. The connection bracket according to claim 1, wherein the second connector comprises:
a connecting plate;
the third reinforcing rib is connected to one side, away from the first connecting piece, of the connecting plate;
and the fourth reinforcing rib is connected to one side of the connecting plate, which is far away from the first connecting piece, and the third reinforcing rib and the fourth reinforcing rib are symmetrical relative to the central axis of the second part.
8. The attachment bracket of claim 1, wherein the first attachment member, the force-bearing member, and the second attachment member are a unitary structure.
9. The connecting bracket of claim 1, further configured to connect a third component and a fourth component;
the second connecting piece is provided with a first connecting portion and a second connecting portion, the first portion of the connecting support, the third component and the fourth component is connected through the first connecting portion, and the second portion of the connecting support and the fourth component is connected through the second connecting portion.
10. A scooter, comprising:
a seat;
a frame comprising a front frame and a rear frame;
a connecting bracket for connecting the seat and the frame, the connecting bracket being according to any one of claims 1-9;
the seat is connected to the first connecting piece of the connecting support, and the front frame and the rear frame are connected to the second connecting piece of the connecting support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022066579.5U CN213473357U (en) | 2020-09-18 | 2020-09-18 | Connecting support and scooter with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022066579.5U CN213473357U (en) | 2020-09-18 | 2020-09-18 | Connecting support and scooter with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213473357U true CN213473357U (en) | 2021-06-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022066579.5U Active CN213473357U (en) | 2020-09-18 | 2020-09-18 | Connecting support and scooter with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213473357U (en) |
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2020
- 2020-09-18 CN CN202022066579.5U patent/CN213473357U/en active Active
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Address after: 100089 building 01, South 30, dongxindu east station, Qinghe Xisanqi, Haidian District, Beijing Patentee after: Beijing Wujiang Technology Co.,Ltd. Address before: 100089 building 01, South 30, dongxindu east station, Qinghe Xisanqi, Haidian District, Beijing Patentee before: BEIJING DELTA-ROBOTICS TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20220214 Address after: 239400 No. 116, qicang Road, Mingguang Industrial Park, Chuzhou City, Anhui Province Patentee after: Anhui jinbaihe Medical Equipment Co.,Ltd. Address before: 100089 building 01, South 30, dongxindu east station, Qinghe Xisanqi, Haidian District, Beijing Patentee before: Beijing Wujiang Technology Co.,Ltd. |