CN211009550U - Double-shaft inward-folding hinge structure capable of maintaining any angle - Google Patents
Double-shaft inward-folding hinge structure capable of maintaining any angle Download PDFInfo
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- CN211009550U CN211009550U CN201921887449.9U CN201921887449U CN211009550U CN 211009550 U CN211009550 U CN 211009550U CN 201921887449 U CN201921887449 U CN 201921887449U CN 211009550 U CN211009550 U CN 211009550U
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Abstract
The utility model discloses a double-shaft inward-folding hinge structure capable of maintaining any angle, belonging to the technical field of flexible display equipment, comprising a hinge groove body, wherein the inner side of the end part of the hinge groove body is provided with a linkage plate, the outer side of the end part is provided with a holding tank, and a connecting piece is arranged in the holding tank in a sliding way; the connecting piece is assembled and connected with the linkage plate and moves in linkage with the linkage plate; the containing groove is internally provided with an elastic part which is abutted against the connecting part, so that the linkage plate can stop moving at any angle, and the aim that a user can meet the opening and closing requirements of the user at any angle to meet the use requirements of the user can be achieved when the display equipment is opened and closed.
Description
Technical Field
The utility model belongs to the technical field of flexible display device, particularly, relate to a can maintain biax infolding hinge structure of arbitrary angle.
Background
The flexible display device has the advantages of impact resistance, light weight, convenience in carrying and the like, has the advantages of functions which cannot be realized by a traditional display and user experience, and when a user uses the flexible device, the protective cover plate is an indispensable part of the flexible display device particularly because the user firstly sees the flexible device and the firstly touched part is the protective cover plate.
In the era of rapid development of smart phones, glass materials are always the first choice for mobile phone covers due to requirements on light transmittance, strength and surface hardness. With the maturity of 3D glass technology, the glass cover plate continues to the curved surface screen cell-phone of fixed camber.
At present, CPI films are selected as protective cover plates from different manufacturers of foldable display screens in an irreconcilable manner, the CPI films (Colorless polymers) are resin Polyimide in nature, a main chain of the CPI films contains polymers of imide rings (-CO-N-CO-) and polymers containing phthalimide structures are most important, the Polyimide is used as a special engineering material and is widely applied to the fields of aviation, aerospace, microelectronics, nano-materials, liquid crystals, separation films, lasers and the like, an existing flexible O L ED substrate is also PI, the PI is yellow, and the CPI subjected to de-yellowing is used as a cover plate for being suitable for a glass cover plate.
Aiming at the defects of the CPI material, at present, various manufacturers replace the CPI material with ultrathin glass which has higher surface strength and can not be loosened, elongated and creased, and in addition, the CPI material has good self-repairing capability, can still recover the original flatness after being repeatedly bent for a long time, and does not have the problem of fatigue of film materials. However, the fatal defects of the ultra-thin glass are: the glass is fragile, and particularly when the glass is folded inwards, the stress on the glass is large, so that the ultra-thin glass is easily damaged.
In the above prior art, the ultra-thin glass or CPI material is used as the protective cover plate, so that the opening and closing at any angle cannot be realized in the opening and closing process of the display device, and related products with any opening and closing angle are not available in the market at present, so that the user has great difficulty in using the flexible display device on two sides in some occasions, and the diversified requirements of the user cannot be met.
SUMMERY OF THE UTILITY MODEL
In view of this, in order to solve the above-mentioned problem that prior art exists, the utility model aims at providing a can maintain the biax infolding hinge structure of arbitrary angle in order to reach display device when opening and shutting the operation, can realize the user to the purpose of the demand that arbitrary angle opened and shut in order to satisfy user's user demand.
The utility model discloses the technical scheme who adopts does: a double-shaft inward-folding hinge structure capable of maintaining any angle comprises a hinge groove body, wherein a linkage plate is arranged on the inner side of the end part of the hinge groove body, an accommodating groove is arranged on the outer side of the end part, and a connecting piece is arranged in the accommodating groove in a sliding manner; the connecting piece is assembled and connected with the linkage plate and moves in linkage with the linkage plate; the containing groove is internally provided with an elastic piece, and the elastic piece can stop the movement of the linkage plate at any angle due to the friction force generated by the force applied to the connecting piece by the elastic piece.
Furthermore, the hinge groove body is symmetrically provided with two linkage plates at the inner side of the same end part, and the two linkage plates are symmetrically opened and closed through linkage motion of the same connecting piece so as to realize the symmetrical opening and closing operation of the flexible display equipment and improve the convenience of the functions of the flexible display equipment.
Furthermore, the same end of the hinge groove body is symmetrically provided with a limiting groove group, the end of each linkage plate is provided with a limiting column group correspondingly matched with the limiting groove group, and the limiting groove group limits the movement of the limiting column group and further limits the movement of the linkage plate.
Furthermore, the limiting column group comprises a first limiting column and a second limiting column, and the limiting groove group comprises a first limiting groove and a second limiting groove; the first limiting column is arranged in the first limiting groove and can rotate and move in the first limiting groove, and the second limiting column is arranged in the second limiting groove and can rotate and move in the second limiting groove.
Furthermore, a third limiting groove is symmetrically formed in the connecting piece, the second limiting column penetrates through the second limiting groove and extends into the third limiting groove, the third limiting groove and the first limiting groove are arranged in parallel, the first limiting groove and the third limiting groove are linear, the second limiting groove is arc-shaped, the connecting piece can be linked when the second limiting column limits movement in the second limiting groove, then the two linkage plates are linked through movement of the connecting piece to generate symmetrical opening and closing movement, meanwhile, opening and closing movement of the linkage plates can be achieved under the limiting effect of the first limiting groove, the second limiting groove and the third limiting groove, and the supporting plate and the bearing plate are in symmetrical movement simultaneously.
Furthermore, the holding tank is internally provided with a sliding groove which is positioned on the symmetrical line of the two linkage plates, and the connecting piece is provided with a sliding block matched with the sliding groove so as to limit the movement direction of the connecting piece.
Further, the holding tank sets the lid, one side of connecting piece is equipped with the backing plate, supports tightly between this backing plate and the lid and is provided with the elastic component, can make through this elastic component and produce frictional resistance between backing plate and the connecting piece.
Further, still locate including the symmetry the backup pad of hinge cell body both sides, be equipped with the activity articulated elements between one side of backup pad and the long lateral wall of hinge cell body, the both ends of another side all with the linkage board is articulated to be connected, and the linkage board passes through the motion of activity articulated elements linkage backup pad to the linkage motion through the backup pad realizes the maximize of curvature radius R, thereby can realize the stress minimizing that the flexible screen bore when opening and shutting.
Further, the activity articulated elements include that at least one is located articulated buckle in the backup pad, form between the surface of this articulated buckle and backup pad and press from both sides the mouth, be equipped with on the long lateral wall of hinge cell body and press from both sides the hanging hole that the mouth corresponds the matching with this, be equipped with in this hanging hole and rotate and remove relatively it articulated buckle to realize through the activity articulated elements that the backup pad can produce the symmetrical motion that opens and shuts under the linkage effect of linkage board.
Furthermore, the flexible screen support device further comprises bearing plates symmetrically arranged on two sides of the hinge groove body, wherein two sides of each bearing plate are respectively assembled on the linkage plates corresponding to the bearing plates, and the bearing plates and the support plate on one side where the bearing plates are located can be spliced into a plane so as to provide a good and stable support effect for the flexible screen.
The utility model has the advantages that:
1. adopt the utility model discloses a can maintain biax infolding hinge structure of arbitrary angle, its linkage board is when the motion, through linkage board and adapting unit's linkage, realizes the symmetry and opens and shuts the motion, and the connecting piece supports it tightly through locating the inside elastic component of holding tank to the realization is when the linkage board is moving, and it moves arbitrary angle under the elastic pressure of elastic component, carries out real-time stop and can not rotate at will, can use flexible screen at the angle of difference with satisfying the user.
2. Adopt the utility model discloses a can maintain biax infolding hinge structure of arbitrary angle, the inside elastic component of its holding tank is through the equipment of lid with it compresses tightly, its installation convenient and fast, and the accessible adjusts the pressure size of elastic component to the backing plate that lies in above the connecting piece to stop required external force to the arbitrary angle of flexible screen and adjust.
3. Adopt the utility model discloses a can maintain biax infolding hinge structure of arbitrary angle, bilateral symmetry through at the hinge cell body sets up the linkage board, the linkage board is when carrying out the motion of opening and shutting, receive the restraint of biax linkage subassembly, in order to realize that display device can carry out the symmetry operation of opening and shutting, and simultaneously, its connecting piece produces the linkage motion along with the linkage board motion, and restrict the simultaneous movement of two linkage boards with this, it can be with the working distance maximize, make the tolerance problem of taking place during processing to solve, and simultaneously, through simple binary structural design, the manufacturing process is simple, and the production cost is reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of a dual-axis inward-folding hinge structure capable of maintaining any angle provided by the present invention;
fig. 2 is a schematic view of an internal structure of a dual-axis inward-folding hinge structure capable of maintaining any angle provided by the present invention;
FIG. 3 is a schematic view of a portion of the structure of FIG. 2;
fig. 4 is a schematic view of a partially disassembled structure in the dual-axis inward-folding hinge structure capable of maintaining any angle provided by the present invention;
fig. 5 is a schematic structural view of a linkage plate in a double-shaft inward-folding hinge structure capable of maintaining any angle provided by the present invention;
fig. 6 is a schematic structural view of a first view angle of a hinge slot in a double-shaft inward-folding hinge structure capable of maintaining any angle provided by the present invention;
fig. 7 is a schematic structural view of a second view angle of the hinge slot in the double-shaft inward-folding hinge structure capable of maintaining any angle provided by the present invention;
fig. 8 is a schematic structural diagram of a connecting member in a double-shaft inward-folding hinge structure capable of maintaining any angle provided by the present invention;
fig. 9 is a schematic structural view of a hinge slot in a double-shaft inward-folding hinge structure capable of maintaining any angle provided by the present invention;
fig. 10 is a schematic view of an assembly structure of the linkage plate, the connecting member and the hinge slot body in the double-shaft inward-folding hinge structure capable of maintaining any angle provided by the present invention;
the drawings are labeled as follows:
1-a folding shell, 2-a hinge groove body, 3-a bearing plate, 4-a support plate, 5-a linkage plate, 6-a cover body, 7-a hinged buckle plate, 8-a connecting piece, 9-a second limit column, 10-a hanging rod, 11-a first limit column, 12-a first limit groove, 13-a second limit groove, 14-a sliding groove, 15-a third limit groove, 16-a sliding block and 17-an accommodating groove; 18-a backing plate; 19-an elastic member.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that the indication of the position or the positional relationship is based on the position or the positional relationship shown in the drawings, or the position or the positional relationship that the utility model is usually placed when using, or the position or the positional relationship that the skilled person conventionally understands, or the position or the positional relationship that the utility model is usually placed when using, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or suggest that the indicated device or element must have a specific position, be constructed and operated in a specific position, and thus, cannot be understood as limiting the present invention. Furthermore, the terms "first" and "second" are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases for a person of ordinary skill in the art; the drawings in the embodiments are provided to clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Example 1
As shown in fig. 1, the present embodiment specifically discloses a double-shaft inward-folding hinge structure capable of maintaining any angle, which includes a hinge slot body 2, and the display device is regarded as two bilaterally symmetrical parts, and the hinge slot body 2 is used as a middle joint piece of the left and right parts to realize the opening and closing operation of the left and right parts relative to the hinge slot body 2, based on the conventional design of the display device, in the present embodiment, the hinge slot body 2 is a rectangular slot body, and the long side of the hinge slot body 2 is a side portion, and the short side is an end portion.
As shown in fig. 2, 3, 4 and 9, a linkage plate 5 is installed on the inner side of the end portion of the hinge slot body 2, the linkage plate 5 can rotate relative to the hinge slot body 2 to realize the opening or folding of the flexible screen of the flexible display device, an accommodating groove 17 is formed in the outer side of the end portion, and a connecting piece 8 is slidably arranged in the accommodating groove 17; the connecting piece 8 is assembled and connected with the linkage plate 5 and moves in a linkage manner along with the linkage plate 5, namely, the connecting piece 8 can move in a preset sliding direction in a linkage manner when the linkage plate 5 moves; the containing groove 17 is internally provided with an elastic part 19, the elastic part 19 is tightly abutted to the connecting part 8, the elastic part 19 provides enough pressing acting force for the connecting part 8, the friction resistance of the connecting part 8 in sliding motion is increased, and the connecting part 8 and the linkage plate 5 are in linkage motion, so that when the linkage plate 5 moves under the action of external force, the connecting part 8 can overcome the friction resistance to perform sliding motion, when the external force for driving the linkage plate 5 disappears, the connecting part 8 does not move under the action of the friction resistance, and then the linkage plate 5 stops at the current angular position.
As shown in fig. 4 and 9, the receiving groove 17 is provided with a cover 6, the cover 6 is mounted on the port of the receiving groove 17 by fastening screws at two ends of the cover, the cover 6 abuts against the elastic member 19, a backing plate 18 is disposed between the elastic member 19 and the connecting member 8, and the backing plate 18 applies force to the surface of the connecting member 8 under the action of the elastic member 19 to increase the friction force between the backing plate 18 and the connecting member 8. In the actual operation process, the tightening force of the fastening screws at the two ends of the cover body 6 can be adjusted to adjust the pressing force of the cover body 6 on the elastic member 19, so as to adjust the frictional resistance between the backing plate 18 and the connecting member 8, and further flexibly adjust the external force required for adjusting the movement of the linkage plate 5, and meanwhile, the cover body 6 can also play a good role in protecting various components inside the accommodating groove 17.
In the present embodiment, the elastic member 19 may be silicon rubber, polyurethane, a spring, or the like, and various materials having elasticity may be used flexibly.
Example 2
On the basis of embodiment 1, in order to realize that the flexible device can realize symmetrical opening and closing during the opening and closing operation, the following structure is adopted:
as shown in fig. 2-4, two linkage plates 5 are symmetrically assembled at the inner side of the same end of the hinge slot body 2, the two linkage plates 5 are in linkage motion through the same connecting piece 8 to be opened and closed symmetrically, the two linkage plates 5 are in linkage motion through a double-shaft linkage assembly to be opened and closed symmetrically, and when the hinge slot body is completely unfolded, the two linkage plates 5 are in a horizontal state; when the two linkage plates 5 are completely closed, the two linkage plates are in a mutually overlapped state.
The two linkage plates 5 can be symmetrically opened and closed and are realized by adopting the following structures:
as shown in fig. 2-7 and 10, the same end of the hinge slot body 2 is symmetrically provided with a limit slot group, and the end of each linkage plate 5 is provided with a limit column group correspondingly matched with the limit slot group; the limiting column group comprises a first limiting column 11 and a second limiting column 9, and the limiting groove group comprises a first limiting groove 12 and a second limiting groove 13; the first limiting column 11 is arranged in the first limiting groove 12 and can rotate and move in the first limiting groove 12, and the second limiting column 9 is arranged in the second limiting groove 13 and can rotate and move in the second limiting groove 13.
Therefore adopt first spacing groove 12, second spacing groove 13 and third spacing groove 15 of above-mentioned structural design, under the circumstances of the motion of cooperation connecting piece 8, can realize that two linkage pieces that this connecting piece 8 is relevant are the symmetry and open and shut the motion to can brake arbitrary angular position and stop, in order to satisfy the user demand of user to the flexible screen, its specific motion process is as follows:
when any one linkage plate 5 is pulled or two linkage plates 5 at the same end are pulled simultaneously, when the second limiting column 9 on the linkage plate 5 moves in the second limiting groove 13, the first limiting column 11 moves and rotates in the first limiting groove 12, and meanwhile, the second limiting column 9 also moves in the third limiting groove 15.
As shown in fig. 7, 8 and 9, a sliding groove 14 is formed in the accommodating groove 17, the length direction of the sliding groove 14 is located on the symmetry line of the two linkage plates 5, a sliding block 16 matched with the sliding groove 14 is arranged on the connecting piece 8, and the connecting piece 8 moves in the symmetry line direction of the two linkage plates 5 at the same end part through mutual constraint between the sliding block 16 and the sliding groove 14. For further promoting the connecting plate when the linkage, it possesses more stable restricted movement, all is equipped with bellied slider 16 at the middle part and both ends of connecting plate, has seted up spout 14 in the bottom correspondence of holding tank 17.
Example 3
As shown in fig. 1 and 2, the double-shaft inward-folding hinge structure disclosed in embodiment 2 and capable of maintaining any angle is practically applied, the structure further includes support plates 4 symmetrically disposed at two sides of the hinge slot body 2, a movable hinge is disposed between one side of each support plate 4 and a long side wall of the hinge slot body 2, two ends of the other side are both hinged to the linkage plate 5, the linkage plate 5 is linked to the support plates 4 through the movable hinges to move, and when the linkage plate 5 is symmetrically and synchronously opened and closed, the support plates 4 at two sides can also be linked to symmetrically and synchronously open and close, so that the flexible screen can be stressed symmetrically when opened and closed, and the deformation of the flexible screen can be minimized.
The articulated hinge comprises three articulated pinch plates 7 arranged on the supporting plate 4, a clamping opening is formed between the articulated pinch plates 7 and the surface of the supporting plate 4, hanging holes matched with the clamping opening in a corresponding mode are formed in the long side wall of the hinge groove body 2, and the articulated pinch plates 7 which can rotate and move relative to the hanging holes are assembled in the hanging holes. Preferably, for improving the relative motion fluency between the hanging hole and the clamping opening, one side of the hanging hole facing the hinged buckle plate 7 is provided with a cylindrical hanging rod 10 so as to reduce the friction resistance of the relative motion of the hinged buckle plate 7 to the hanging hole.
The foldable cover is characterized by further comprising foldable shells 1 symmetrically arranged on two sides of the hinge groove body 2, two sides of each foldable shell 1 are assembled on the corresponding linkage plate 5 through fastening screws, a bearing plate 3 is installed in each foldable shell 1, the bearing plate 3 and a supporting plate 4 on one side where the bearing plate 3 is located can be spliced into a plane, a supporting plane required by the cover body can be spliced through the bearing plate 3 and the supporting plate 4, and the flexible screen is located on the supporting plane. Preferentially, the supporting plate 4 faces one side of the bearing plate 3 and is arranged to be cylindrical, so that when the supporting plate 4 slightly rotates relative to the bearing plate 3, the supporting plate 4 and the bearing plate 3 can be well transited, and the flexible screen can not be damaged.
Can realize through this articulated elements that backup pad 4 can be linkage motion under linkage plate 5's effect, simultaneously, can satisfy two backup pads 4 and under fold condition, form the shape of expanding outward between the lower tip of two backup pads 4, should expand the shape outward and can realize curvature radius R's maximize to reduce the loss to the protection lid.
The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.
Claims (10)
1. A double-shaft inward-folding hinge structure capable of maintaining any angle comprises a hinge groove body and is characterized in that a linkage plate is arranged on the inner side of the end part of the hinge groove body, an accommodating groove is formed in the outer side of the end part, and a connecting piece is arranged in the accommodating groove in a sliding manner; the connecting piece is assembled and connected with the linkage plate and moves in linkage with the linkage plate; the containing groove is internally provided with an elastic part which is tightly propped against the connecting piece, so that the linkage plate can stop moving at any angle.
2. The structure of a double-shaft inward-folding hinge capable of maintaining any angle as claimed in claim 1, wherein two linkage plates are symmetrically assembled at the inner side of the same end of the hinge slot body, and the two linkage plates are linked to move through the same connecting piece to symmetrically open and close.
3. The structure of a double-shaft inward folding hinge capable of maintaining any angle as claimed in claim 2, wherein the same end of the hinge slot body is symmetrically provided with a limit slot group, and the end of each linkage plate is provided with a limit column group correspondingly matched with the limit slot group.
4. The structure of claim 3, wherein the set of position-limiting posts comprises a first position-limiting post and a second position-limiting post, and the set of position-limiting grooves comprises a first position-limiting groove and a second position-limiting groove; the first limiting column is arranged in the first limiting groove and can rotate and move in the first limiting groove, and the second limiting column is arranged in the second limiting groove and can rotate and move in the second limiting groove.
5. The structure of claim 4, wherein the connecting member is symmetrically provided with third limiting grooves, the second limiting posts extend into the third limiting grooves through the second limiting grooves, the third limiting grooves are parallel to the first limiting grooves, the first limiting grooves and the third limiting grooves are both linear, and the second limiting grooves are arc-shaped.
6. The structure of claim 2, wherein the receiving groove has a sliding groove located on a symmetry line of the two linkage plates, and the connecting member has a sliding block matching with the sliding groove.
7. The structure of claim 1, wherein a cover is attached to the receiving groove, a pad is disposed on one side of the connecting member, and an elastic member is disposed between the pad and the cover.
8. The structure of claim 1, further comprising support plates symmetrically disposed at both sides of the hinge slot, wherein a movable hinge is disposed between one side of the support plates and the long sidewall of the hinge slot, both ends of the other side are hinged to the linkage plate, and the linkage plate is linked to the support plates through the movable hinge.
9. The structure of claim 8, wherein the hinge assembly comprises at least one hinged buckle plate disposed on the supporting plate, a clipping opening is formed between the hinged buckle plate and the surface of the supporting plate, a hanging hole corresponding to the clipping opening is disposed on the long side wall of the hinge slot body, and the hinged buckle plate capable of rotating and moving relative to the hanging hole is disposed in the hanging hole.
10. The structure of claim 8, further comprising two bearing plates symmetrically disposed at two sides of the hinge slot, wherein two sides of the bearing plates are respectively mounted on the corresponding linkage plates, and the bearing plates and the supporting plate at one side of the bearing plates can be assembled into a plane.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921887449.9U CN211009550U (en) | 2019-11-04 | 2019-11-04 | Double-shaft inward-folding hinge structure capable of maintaining any angle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921887449.9U CN211009550U (en) | 2019-11-04 | 2019-11-04 | Double-shaft inward-folding hinge structure capable of maintaining any angle |
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| CN211009550U true CN211009550U (en) | 2020-07-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022127280A1 (en) * | 2020-12-15 | 2022-06-23 | 合肥维信诺科技有限公司 | Bending unit, hinge, and flexible module bending device |
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2019
- 2019-11-04 CN CN201921887449.9U patent/CN211009550U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022127280A1 (en) * | 2020-12-15 | 2022-06-23 | 合肥维信诺科技有限公司 | Bending unit, hinge, and flexible module bending device |
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Effective date of registration: 20211105 Address after: No.389, Wende West Street, new economic Industrial Park, Chengdu modern industrial port, Pidu District, Chengdu, Sichuan 610000 Patentee after: Chengdu tuomi Electronic Equipment Manufacturing Co.,Ltd. Address before: 610000 building 7, phase II, maker Park, Deyuan town (Jingrong town), Pidu District, Chengdu City, Sichuan Province Patentee before: TUOMI (CHENGDU) APPLIED TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. |