CN111456593B - Door with buffering effect - Google Patents
Door with buffering effect Download PDFInfo
- Publication number
- CN111456593B CN111456593B CN202010301710.3A CN202010301710A CN111456593B CN 111456593 B CN111456593 B CN 111456593B CN 202010301710 A CN202010301710 A CN 202010301710A CN 111456593 B CN111456593 B CN 111456593B
- Authority
- CN
- China
- Prior art keywords
- rotating rod
- door
- door body
- side wall
- rotating
- 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.)
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Links
- 230000003139 buffering effect Effects 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 30
- 230000000694 effects Effects 0.000 claims abstract description 5
- 230000000149 penetrating effect Effects 0.000 claims abstract 2
- 239000002775 capsule Substances 0.000 claims description 14
- 230000008018 melting Effects 0.000 claims 1
- 238000002844 melting Methods 0.000 claims 1
- 210000005239 tubule Anatomy 0.000 description 17
- 244000309464 bull Species 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 3
- 239000012943 hotmelt Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/32—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing
- E06B3/34—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing with only one kind of movement
- E06B3/36—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing with only one kind of movement with a single vertical axis of rotation at one side of the opening, or swinging through the opening
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
- E05F3/14—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with fluid brakes of the rotary type
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/28—Other arrangements on doors or windows, e.g. door-plates, windows adapted to carry plants, hooks for window cleaners
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
Abstract
The invention discloses a door with a buffering effect, which comprises a rotating shaft and a door body, wherein the door body is rotationally connected with the rotating shaft through a shaft sleeve, a hollow cavity is formed in the rotating shaft, sealing rings are symmetrically and hermetically arranged at the upper end and the lower end of the hollow cavity, a rotating rod is arranged at the center of the two sealing rings in a penetrating mode, the rotating rod is in sealing sliding connection with the two sealing rings, two semi-arc grooves are symmetrically formed in the rotating shaft, connecting rods are fixedly connected to the two ends of the rotating rod, and one end, far away from the rotating rod, of each connecting rod is fixedly connected with the door body through the semi-arc grooves. The invention has long service life, the flow speed of the hydraulic oil in the device is limited by the flow limiting hole, and the hydraulic oil can not flow quickly when the door body is under strong thrust, thereby achieving the purpose of slowing down the rotating speed of the rotating rod and the door body, avoiding the door body and the door frame from being impacted violently, playing the effect of protecting the door body and the door frame and reducing the noise.
Description
Technical Field
The invention relates to the technical field of doors, in particular to a door with a buffering effect.
Background
With the development of society and the progress of economy, the types of doors are more and more abundant, and people can select doors with different functions according to use scenes, such as an explosion-proof fireproof door is required to be used in a warehouse for storing fireworks and crackers; an automatic glass door is generally installed at a doorway of a hotel lobby; in the study and office areas, a buffering mute door is often installed.
Common buffering silence door increases the round rubber strip in door week or door frame department more, the rubber strip can cushion the collision between the door body and door frame when closing the door, thereby reach noise reduction effect, nevertheless after long-time the use, the rubber strip can be difficult to avoid taking place wearing and tearing or tearing, just also can't reach the purpose of buffering silence this moment, and add man-hour, in order to prevent that the rubber strip from droing, inlay it and establish door frame or the internal of door more, consequently, it also has certain degree of difficulty to change the rubber strip, still can harm a body structure even when changing, for this, we provide a door with buffering effect.
Disclosure of Invention
The invention aims to solve the problems that the noise reduction and buffering effects of a common buffering mute door in the prior art are poor and the rubber strip is difficult to replace after the rubber strip is worn, and provides the door with the buffering effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
a door with a buffering effect comprises a rotating shaft and a door body, wherein the door body is rotationally connected with the rotating shaft through a shaft sleeve, a hollow cavity is formed in the rotating shaft, sealing rings are symmetrically and hermetically arranged at the upper end and the lower end of the hollow cavity, a rotating rod is jointly penetrated and installed in the centers of the two sealing rings, the rotating rod is in sealing sliding connection with the two sealing rings, two semi-arc grooves are symmetrically formed in the rotating shaft, connecting rods are fixedly connected to the two ends of the rotating rod, and one end, away from the rotating rod, of each connecting rod is fixedly connected with the door body through the semi-arc grooves;
a fixed plate and a movable plate are hermetically and fixedly arranged between the two sealing rings, one vertical side wall of the fixed plate is hermetically and fixedly connected with the inner side wall of the hollow cavity, the other vertical side wall of the fixed plate is hermetically and slidably connected with the rotating rod, one vertical side wall of the movable plate is hermetically and slidably connected with the inner side wall of the hollow cavity, the other vertical side wall of the movable plate is hermetically and fixedly connected with the rotating rod, and a plurality of flow limiting holes are symmetrically formed in the fixed plate;
hydraulic oil is filled between the two sealing rings, and the door body is provided with a signboard.
Preferably, the signboard includes casing, perspective window and word tablet, the hot melt has transparent utricule in the casing, and transparent utricule is located between word tablet and the casing inside wall.
Preferably, be equipped with the tubule in bull stick and the connecting rod, the tubule includes horizontal end and vertical end, the horizontal end and the transparent utricule of tubule are linked together, the terminal mouth of pipe of the vertical end of tubule runs through the lateral wall of bull stick and extends to outside the bull stick, and the vertical end department of tubule installs the pressure valve.
Preferably, a sealing sliding plug is arranged in the thin tube in a sliding mode.
The invention has the beneficial effects that:
1. the connecting rod and the rotating rod are driven to synchronously rotate through the movement of the door body, and the rotating plate can be driven to rotate in the hollow cavity, so that the relative position of the rotating plate and the fixed plate is changed, if the rotating speed of the rotating plate is low, hydraulic oil on one side of the rotating plate and the fixed plate can smoothly flow to the other side through the flow limiting hole, and the movement of the door body is not influenced; if the rotating plate rotates at a high speed, a large amount of hydraulic oil cannot pass through the flow limiting hole at once, so that the oil pressure on one side is increased, and the rotating plate is difficult to continue to rotate, so that the aim of limiting the door body to move quickly is fulfilled.
2. The plurality of flow limiting holes are formed in the fixed plate, hydraulic oil flows back and forth from the flow limiting holes, so that the oil pressure change of the hydraulic oil in the vertical direction is approximately the same, and the pressure on each position is approximate when the rotating plate moves.
3. When the flow change value of the hydraulic oil is larger than the maximum flow allowed by the flow limiting hole, the rotating plate can be subjected to the reaction force of the hydraulic oil, so that the door body is difficult to push, the damage to the door body and the door frame caused by the fact that the door body is too fast in moving speed and violently collided with the door frame is avoided, and in addition, the noise generated when the door body collides with the door frame can be reduced.
4. Through setting up pressure valve, tubule, sealed sliding plug, can promote sealed sliding plug and remove in the tubule when hydraulic oil pressure risees to make coloured liquid or solution in the tubule get into transparent utricule, make transparent utricule bloated and change the colour, thereby remind people to notice the sign, the light sound is closed the door.
5. The transparent utricule is when natural state, when the door body did not take place to remove, as the background of word tablet, its colour is transparent, can not influence the installation effect of denoter to the colour change of transparent utricule does not rely on electric power to change, consequently does not need extra connecting circuit, also can not consume the electric energy.
In conclusion, the service life of the invention is long, the flow speed of the hydraulic oil in the device is limited by the flow limiting hole, and the hydraulic oil can not flow rapidly when the door body is under strong thrust, so that the aim of reducing the rotating speed of the rotating rod and the door body is achieved, the door body and the door frame are prevented from being violently impacted, the effect of protecting the door body and the door frame is achieved, and the noise is reduced.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment 1 of a door with a buffering effect according to the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a top view of the structure of the movable plate and the fixed plate of the door 1 with buffering effect according to the present invention;
FIG. 4 is a schematic view of a thin tube part in an embodiment 2 of a door with a buffering effect according to the present invention;
FIG. 5 is a top view of the structure of the rotating rod and the thin tube part in the door of the embodiment 2 with the buffering effect according to the present invention;
fig. 6 is a schematic side view of a signboard of embodiment 2 of a door with a buffering effect according to the present invention.
In the figure: the device comprises a rotating shaft 1, a shaft sleeve 2, a fixing plate 3, a rotating rod 4, a moving plate 5, a connecting rod 6, a hollow cavity 7, a door 8, a signboard 9, a window 901 transparent window, a signboard 902, a flow limiting hole 10, a sealing ring 11, a sealing sliding plug 12, a pressure valve 13, a thin tube 14 and a transparent bag body 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
Referring to fig. 1-3, a door with a buffering effect comprises a rotating shaft 1 and a door body 8, wherein the door body 8 is rotatably connected with the rotating shaft 1 through a shaft sleeve 2, the shaft sleeve plays a role of connecting the door body 8 with the rotating shaft 1 and also plays a role of supporting the door body 1, a hollow cavity 7 is formed in the rotating shaft 1, sealing rings 11 are symmetrically and hermetically arranged at the upper end and the lower end of the hollow cavity 7, a rotating rod 4 is jointly penetrated and installed at the centers of the two sealing rings 11, the rotating rod 4 is in sealed sliding connection with the two sealing rings 11, two semi-arc grooves are symmetrically formed in the rotating shaft 1, connecting rods 6 are fixedly connected to two ends of the rotating rod 4, and one end, away from the rotating rod 4, of each connecting rod 6 is fixedly connected with the door body 8 through the semi-arc grooves;
a fixed plate 3 and a movable plate 5 are hermetically and fixedly arranged between the two sealing rings 11, one vertical side wall of one side of the fixed plate 3 is hermetically and fixedly connected with the inner side wall of the hollow cavity 7, the other vertical side wall of the fixed plate 3 is hermetically and slidably connected with the rotating rod 4, one vertical side wall of one side of the movable plate 5 is hermetically and slidably connected with the inner side wall of the hollow cavity 7, and the other vertical side wall of the movable plate 5 is hermetically and fixedly connected with the rotating rod 4, namely, when the rotating rod 4 rotates, the movable plate 5 rotates along with the rotating rod, but the fixed plate 3 cannot rotate, a plurality of flow limiting holes 10 are symmetrically formed in the fixed plate 3, the number of the flow limiting holes 10 is small, the hole diameter is small, and only a small amount of liquid is allowed to pass through in unit time;
hydraulic oil is filled between the two sealing rings 11, in the embodiment, the force of pushing the door body 8 by hands or blowing the door body 8 by wind is far less than the force required by obviously compressing the hydraulic oil, therefore, the hydraulic oil in the device can be regarded as incompressible liquid, and the door body 8 is provided with the signboard 9 for reminding people of closing the door by light sound.
When the door body 8 is pushed, the connecting rod 6 connected with the door body 8 also rotates to further drive the rotating rod 4 to rotate in the hollow cavity 7, the moving plate 5 is fixedly connected with the rotating rod 4, and the fixed plate 3 is in sealed sliding connection with the rotating rod 4, so that the rotating rod 4 drives the moving plate 5 to rotate when rotating, taking fig. 3 as an example, when the moving plate 5 rotates anticlockwise, hydraulic oil above the moving plate enters the lower part through the flow limiting hole 10 to achieve balance of pressure at two sides of the fixed plate 3 and the moving plate 5;
because the number and the size of the restricted holes 10 are limited, hydraulic oil can smoothly flow to reach balance only when the rotating speed of the moving plate 5 is slow, when the moving speed of the moving plate 5 is fast, the volume of the hydraulic oil passing through the restricted holes 10 in unit time is smaller than the volume change caused by the position change of the moving plate 5, in the embodiment, the hydraulic oil can be regarded as incompressible liquid, so that the moving plate 5 is difficult to compress the hydraulic oil and also difficult to continue to rotate anticlockwise, the rotating rod 4 and the connecting rod 6 reduce the rotating speed accordingly, the door body 8 can not rotate fast, and the impact force between the door body 8 and a door frame can be greatly reduced along with the reduction of the moving speed of the door body 8, so that the door body 8 and the door frame are protected, and the noise caused by impact is reduced;
when people gently push the door body 8, the rotating speed of the moving plate 5 is low, and the quantity and the size of the flow limiting holes 10 completely meet the flowing requirement of hydraulic oil, so that the action that people push the door body 8 cannot be hindered by the hydraulic oil.
Example 2
Referring to fig. 4 to 6, the present embodiment is different from embodiment 1 in that: signboard 9 includes the casing, perspective window 901 and word tablet 902, and hot melt has transparent utricule 15 in the casing, and transparent utricule 15 is located between word tablet 902 and the casing inside wall, and transparent utricule 15 can be seen as the background of word tablet 902, sees through the colour change that transparent utricule 15 can be seen to word tablet 902.
In this embodiment, be equipped with tubule 14 in bull stick 4 and the connecting rod 6, tubule 14 includes horizontal end and vertical end, the horizontal end and the transparent utricule 15 of tubule 14 are linked together, the terminal mouth of pipe of the vertical end of tubule 14 runs through the lateral wall of bull stick 4 and extends to outside the bull stick 4, and the vertical end department of tubule 14 installs pressure valve 13, when the pressure of hydraulic oil reaches pressure valve 13's rated flow pressure, the valve body can be opened, hydraulic oil passes through pressure valve 13 and gets into tubule 14.
The narrow tube 14 is internally provided with the sealing sliding plug 12 in a sliding manner, the inner diameter of the narrow tube 14 is smaller, and the sealing sliding plug 12 can be pushed to slide towards the signboard 9 only by a small amount of hydraulic oil entering the narrow tube 14;
the tubule 14 is filled with a colored solution or a colored gas, and the colored solution or the colored gas is located between the sealing sliding plug 12 and the transparent capsule 15.
When the present embodiment is used, in an initial state, the inside of the transparent capsule body 15 is in a negative pressure state, that is, the capsule wall of the transparent capsule body 15 is tightly attached, the transparent capsule body 15 is in a transparent state, taking fig. 5 as an example, when people push the door body 8 with force to make the moving plate 5 rotate counterclockwise quickly, the oil pressure of the hydraulic oil in the upper half part rises and reaches the rated flow pressure of the pressure valve 13, the hydraulic oil between the sealing rings 11 enters the tubule 14 and pushes the sealing sliding plug 12 to move, as the sealing sliding plug 12 approaches the direction of the signboard 9, the colored solution or the colored gas in the tubule 14 is extruded into the transparent capsule body 15, so that the transparent capsule body 15 expands and presents a specific color, and the transparent capsule body 15 serves as the background of the signboard 902, and the color change can prompt people to pay attention to the signboard 9, so as to actively close the door with a light sound;
when the force of pushing the door by people is reduced, the rotating speed of the moving plate 5 is reduced, the hydraulic oil returns to normal pressure, the hydraulic oil in the thin tube 14 flows back to the position between the sealing rings 11, the sealing sliding plug 12 returns to the initial position under the action of negative pressure, and the colored solution or the colored gas in the transparent capsule body 15 returns to the thin tube 14, so that the transparent capsule body 15 returns to a transparent state again;
it should be noted that, for convenience of explaining the working principle of the device, only one pressure valve 13 and one identification plate 9 are provided in this embodiment, in practical use, two pressure valves 13 are provided, the plane where the fixed plate 3 and the moving plate 5 are located is taken as an interface, the two pressure valves 13 are located at two sides of the interface and close to the fixed plate 3 (the moving plate 5 rotates in two directions due to two actions of opening and closing the door), and two identification plates 9 are provided, one is installed at the inner side of the door, the other is installed at the outer side of the door, and the number of the other devices is not changed.
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 person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (2)
1. The door with the buffering effect comprises a rotating shaft (1) and a door body (8), and is characterized in that the door body (8) is rotatably connected with the rotating shaft (1) through a shaft sleeve (2), a hollow cavity (7) is formed in the rotating shaft (1), sealing rings (11) are symmetrically and hermetically arranged at the upper end and the lower end of the hollow cavity (7), a rotating rod (4) is jointly installed at the center of each sealing ring (11) in a penetrating mode, the rotating rod (4) is in sealing sliding connection with the two sealing rings (11), two semi-arc grooves are symmetrically formed in the rotating shaft (1), connecting rods (6) are fixedly connected to the two ends of the rotating rod (4), and one end, far away from the rotating rod (4), of each connecting rod (6) is fixedly connected with the door body (8) through the semi-arc grooves;
a fixed plate (3) and a movable plate (5) are hermetically arranged between the two sealing rings (11), a vertical side wall on one side of the fixed plate (3) is hermetically and fixedly connected with the inner side wall of the hollow cavity (7), a vertical side wall on the other side of the fixed plate (3) is hermetically and slidably connected with the rotating rod (4), a vertical side wall on one side of the movable plate (5) is hermetically and slidably connected with the inner side wall of the hollow cavity (7), a vertical side wall on the other side of the movable plate (5) is hermetically and fixedly connected with the rotating rod (4), and a plurality of flow limiting holes (10) are symmetrically formed in the fixed plate (3);
hydraulic oil is filled between the two sealing rings (11), and a signboard (9) is installed on the door body (8);
the signboard (9) comprises a shell, a transparent window (901) and a word board (902), wherein a transparent capsule body (15) is arranged in the shell in a hot melting mode, and the transparent capsule body (15) is located between the word board (902) and the inner side wall of the shell;
a thin tube (14) is arranged in the rotating rod (4) and the connecting rod (6), the thin tube (14) comprises a horizontal end and a vertical end, the horizontal end of the thin tube (14) is communicated with the transparent capsule body (15), a tube opening at the tail end of the vertical end of the thin tube (14) penetrates through the side wall of the rotating rod (4) and extends out of the rotating rod (4), and a pressure valve (13) is arranged at the vertical end of the thin tube (14);
the thin tube (14) is filled with colored solution or colored gas, and the colored solution or the colored gas is positioned between the sealing sliding plug (12) and the transparent capsule body (15).
2. A door with a cushioning effect according to claim 1, characterized in that a sealing sliding plug (12) is slidably arranged in the narrow tube (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010301710.3A CN111456593B (en) | 2020-04-16 | 2020-04-16 | Door with buffering effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010301710.3A CN111456593B (en) | 2020-04-16 | 2020-04-16 | Door with buffering effect |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111456593A CN111456593A (en) | 2020-07-28 |
| CN111456593B true CN111456593B (en) | 2021-09-14 |
Family
ID=71676950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010301710.3A Active CN111456593B (en) | 2020-04-16 | 2020-04-16 | Door with buffering effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111456593B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927282A (en) * | 2020-08-18 | 2020-11-13 | 周飞强 | Prevent fire door with buffering closed effect |
| CN116780363B (en) * | 2023-08-25 | 2023-10-27 | 广东正超电气有限公司 | Switch cabinet door structure adapting to high protection level |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2283714Y (en) * | 1997-03-15 | 1998-06-10 | 江伟 | Anti-theft door with safety window |
| CN2675821Y (en) * | 2003-12-11 | 2005-02-02 | 代少春 | Crashproof device for door |
| CN101476428B (en) * | 2008-12-30 | 2012-07-25 | 中国科学技术大学 | Hinge type door closer using shear thickening fluid |
| CN205604938U (en) * | 2016-04-15 | 2016-09-28 | 广州誉鑫精密部件有限公司 | Automatic damping hinge of closing |
| US20180238092A1 (en) * | 2017-02-20 | 2018-08-23 | Victory Sales and Distribution, LLC. | Combined Door Hinge with Variable Hydraulic Damping and Stopper Device Performance |
| CN207453847U (en) * | 2017-10-17 | 2018-06-05 | 上海维多利亚企业有限公司 | It is a kind of slow down translational speed to screen door |
-
2020
- 2020-04-16 CN CN202010301710.3A patent/CN111456593B/en active Active
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| CN111456593A (en) | 2020-07-28 |
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Effective date of registration: 20210827 Address after: 344000 Tianchang electrical plant south of Weiwu Road, Fuzhou high tech Industrial Development Zone, Fuzhou City, Jiangxi Province (workshops a and B in the hospital of Jiangxi Tianchang Electrical Technology Co., Ltd.) Applicant after: Fuzhou Tiancheng door industry Co.,Ltd. Address before: 450064 Zhengzhou Institute of science and technology, No. 3 Xueyuan Road, Erqi (Mazhai) Economic Development Zone, Erqi District, Zhengzhou City, Henan Province Applicant before: Fang Lili |
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Effective date of registration: 20221213 Address after: 344000 East of 1st Floor, Building B1, Xinzhi Science Park, No. 198, Jinyou Avenue, Fuzhou Hi tech Industrial Development Zone, Fuzhou City, Jiangxi Province Patentee after: Fuzhou SME Service Co.,Ltd. Address before: 344000 Tianchang electrical plant south of Weiwu Road, Fuzhou high tech Industrial Development Zone, Fuzhou City, Jiangxi Province (workshops a and B in the hospital of Jiangxi Tianchang Electrical Technology Co., Ltd.) Patentee before: Fuzhou Tiancheng door industry Co.,Ltd. |
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Effective date of registration: 20231011 Address after: 344000 Tianchang electrical plant south of Weiwu Road, Fuzhou high tech Industrial Development Zone, Fuzhou City, Jiangxi Province (workshops a and B in the hospital of Jiangxi Tianchang Electrical Technology Co., Ltd.) Patentee after: Fuzhou Tiancheng door industry Co.,Ltd. Address before: 344000 East of 1st Floor, Building B1, Xinzhi Science Park, No. 198, Jinyou Avenue, Fuzhou Hi tech Industrial Development Zone, Fuzhou City, Jiangxi Province Patentee before: Fuzhou SME Service Co.,Ltd. |