CN113027261A - Door lock device for large door - Google Patents
Door lock device for large door Download PDFInfo
- Publication number
- CN113027261A CN113027261A CN202110452847.3A CN202110452847A CN113027261A CN 113027261 A CN113027261 A CN 113027261A CN 202110452847 A CN202110452847 A CN 202110452847A CN 113027261 A CN113027261 A CN 113027261A
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- China
- Prior art keywords
- lock
- door
- unit
- locking point
- point unit
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- 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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Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C9/00—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing
- E05C9/04—Arrangements of simultaneously actuated bolts or other securing devices at well-separated positions on the same wing with two sliding bars moved in opposite directions when fastening or unfastening
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C1/00—Fastening devices with bolts moving rectilinearly
- E05C1/08—Fastening devices with bolts moving rectilinearly with latching action
- E05C1/12—Fastening devices with bolts moving rectilinearly with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch
- E05C1/16—Fastening devices with bolts moving rectilinearly with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the handle or member moving essentially in a plane substantially parallel to the wing or frame
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lock And Its Accessories (AREA)
Abstract
The invention relates to a door lock device for a large door, which is arranged on a door leaf frame and used for locking the door leaf frame on a frame panel, and comprises a top locking point unit, an opening unit, a bottom locking point unit and a linkage unit, wherein the top locking point unit and the bottom locking point unit are respectively arranged at the top and the bottom of the door leaf frame, the opening unit is arranged on the door leaf frame and positioned between the top locking point unit and the bottom locking point unit, the opening unit is respectively connected with the top locking point unit and the bottom locking point unit through the linkage unit, and the opening unit controls the top locking point unit and the bottom locking point unit through the linkage unit to realize the opening and closing actions. Compared with the prior art, the invention has the advantages of low failure rate, convenient operation, simple installation, convenient operation and maintenance, high aesthetic degree and the like.
Description
Technical Field
The invention relates to the technical field of mechanical door locks, in particular to a door lock device for a large door.
Background
The large doors of large exhibition halls or industrial factory buildings and auxiliary buildings need to pass through large mechanical equipment, exhibition articles or vehicles, the width and height of the doors are large, and the door leaves of the doors are heavy. Due to the heavy door leaf, the door lock system of the gate cannot adopt the conventional door lock and needs to be customized according to specific needs. The existing door lock damages a door lock transmission mechanism due to excessive force or improper force application in the opening and closing process of a door.
Chinese patent CN211008317U discloses a door lock structure suitable for an integral door leaf structure, which includes a door frame, a door leaf hinged to the door frame and opening and closing in one direction, and a door lock for locking the door leaf in the door frame, wherein the door lock is arranged on the door frame; the door lock comprises a lock pin, a handle and a connecting shaft for driving the lock pin to vertically rotate along the wall surface where the door frame is located, the connecting shaft is perpendicular to the wall surface where the door frame is located and penetrates through the side frames of the door frame, two ends of the connecting shaft extend out of the side frames of the door frame, two ends of the connecting shaft are fixedly connected with the handle, when the door leaf is closed, the connecting shaft is rotated through the handle, the lock pin is driven to rotate to the opening and closing path of the door leaf, and the door leaf is. Although the door lock structure in the patent can realize locking of a door, when the door lock structure is used, a user needs large force to complete unlocking and locking operation, and a door lock transmission mechanism is damaged due to excessive force or improper force.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the door lock device for the large-sized door, which has the advantages of low failure rate, convenience in operation, simplicity in installation, convenience in operation and maintenance and high attractiveness.
The purpose of the invention can be realized by the following technical scheme:
a door lock device for a large door is arranged on a door leaf frame and used for locking the door leaf frame on a frame panel, and comprises a top locking point unit, an opening unit, a bottom locking point unit and a linkage unit; the top locking point unit and the bottom locking point unit are respectively arranged at the top and the bottom of the door leaf frame; the opening unit is arranged on the door leaf frame and is positioned between the top locking point unit and the bottom locking point unit; the opening unit is respectively connected with the top locking point unit and the bottom locking point unit through the linkage unit; the unlocking unit controls the top locking point unit and the bottom locking point unit to realize unlocking and locking actions through the linkage unit.
Preferably, the opening unit comprises a handle, a middle lock box, a lock body, a square shaft and a handle square hole wall; the lock body is arranged in the middle lock box; the square shaft is arranged on the lock body; the square shaft is provided with a handle square hole wall for mounting a handle; the handle is arranged on the middle lock box and inserted into the hole wall of the handle square hole; the top of the lock body is connected with the top locking point unit through the linkage unit, and the bottom of the lock body is connected with the bottom locking point unit through the linkage unit.
More preferably, the lock body is a sheet lock body.
More preferably, the opening unit is provided with a lock body automatic recovery mechanism; the automatic lock body recovery mechanism comprises a tension spring and a connecting steel plate; the connecting steel plate is fixed on the inner wall of the middle lock box; one end of the tension spring is connected with the lock body, and the other end of the tension spring is connected with the connecting steel plate.
More preferably, the opening unit is provided with a lock body limiting structure; the lock body limiting structure comprises an A limiting steel plate for limiting the lock body in a locking state and a B limiting steel plate for limiting the lock body in an opening state; the A limit steel plate and the B limit steel plate are respectively fixed on the inner wall of the middle lock box.
Preferably, the top locking point unit comprises an upper lock box, an upper lock tongue and a lock tongue transmission mechanism; the lock tongue transmission mechanism is arranged in the upper lock box, and the top end of the lock tongue transmission mechanism extends out of the upper lock box and then is connected with the upper lock tongue; the frame panel is provided with a lock hole; the upper lock tongue corresponds to the lock hole in position and is matched with the lock hole in shape;
the bottom locking point unit comprises a lower lock box, a lower lock tongue and a lock tongue transmission mechanism; the lock tongue transmission mechanism is arranged in the lower lock box, and the top end of the lock tongue transmission mechanism extends out of the lower lock box and then is connected with the lower lock tongue; the lower lock tongue corresponds to a ground notch formed in the ground and is matched with the ground notch in shape.
More preferably, the bolt driving mechanism comprises an arc-shaped lug plate, a square lug plate and a lock rod; one end of the arc-shaped ear plate is connected with the linkage unit, and the other end of the arc-shaped ear plate is connected with the square ear plate; the other end of the square ear plate is connected with the lock rod; the other end of the lock rod extends out of the lock box and then is connected with the upper lock tongue or the lower lock tongue; the lock rod is movably connected with the upper lock box or the lower lock box.
More preferably, the top locking point unit and the bottom locking point unit are both provided with automatic bolt recovery mechanisms; the automatic spring bolt recovery mechanism comprises a pressure hard spring, a steel plate for fixing the spring and a spring baffle; the steel plate for the fixed spring is fixed in the upper lock box or the lower lock box, a through hole for the lock rod to pass through is formed in the steel plate for the fixed spring, and the lock rod is movably connected with the steel plate for the fixed spring; the spring baffle is fixed on the lock rod; the lock rod sequentially penetrates through the steel plate for fixing the spring, then the spring baffle plate penetrates through the upper lock box or the lower lock box, and finally is connected with the upper lock tongue or the lower lock tongue; the pressure hard spring is sleeved on the lock rod, and the installation position is between the steel plate for fixing the spring and the spring baffle.
More preferably, the middle lock box, the upper lock box and the lower lock box are all provided with sleeves; a bolt is arranged in the sleeve; the middle lock box, the upper lock box and the lower lock box are fixed on the door leaf frame through bolts.
Preferably, the linkage unit is a steel cable.
Compared with the prior art, the invention has the following beneficial effects:
firstly, the failure rate is low: the door lock device adopts the steel cable transmission, can select smaller steel cable diameter according to requirements, adopts a lock body and a lock box with smaller sizes and a transmission mechanism with smaller weight, and is favorable for reducing the failure rate during opening and closing.
Secondly, the operation is convenient: the door lock device adopts the sheet lock body, which is beneficial to reducing the weight of the lock body, thereby reducing the opening and closing force and facilitating the opening of the door leaf; meanwhile, the door is closed by the aid of the tension spring and the pressure spring, so that closing torque is reduced, and the door leaf is closed conveniently.
Thirdly, the installation is simple, and the operation and maintenance are convenient: the transmission mechanism of the door lock device is simple, is assembled quickly, and is easy to repair after abrasion or failure.
Fourthly, the aesthetic degree is high: the lock body and the lock box of the door lock device have small volumes, and the door lock device can be manufactured to be small and attractive according to actual needs.
Drawings
FIG. 1 is a schematic elevational view of the door latch assembly of the present invention in a locked position;
FIG. 2 is a schematic view of the inner structure of the front vertical surface of the door lock device of the present invention in a locked state;
FIG. 3 is a schematic structural view of section 1-1 in FIG. 2;
FIG. 4 is a schematic structural view of section A-A in FIG. 2;
FIG. 5 is a schematic view of the structure at a in FIG. 4;
FIG. 6 is a schematic view of the inner structure of the front vertical surface of the door lock device of the present invention in an unlocked state;
FIG. 7 is a schematic structural view of the section B-B in FIG. 6;
fig. 8 is a schematic structural diagram at b in fig. 6.
The reference numbers in the figures indicate:
1. handle, 2, middle part lock box, 3, linkage unit, 4, upper portion lock box, 5, upper portion spring bolt, 6, frame panel, 7, lower part lock box, 8, lower part spring bolt, 9, lock body, 10, square shaft, 11, handle square hole pore wall, 12, tension spring, 13, connecting steel plate, 14, the spacing steel sheet of A, 15, the spacing steel sheet of B, 16, the sleeve, 17, arc otic placode, 18, square otic placode, 19, the locking lever, 20, the hard spring of pressure, 21, the steel sheet for fixed spring, 22, spring bezel, 23, the door leaf frame, 24, the ground notch.
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 some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
A door lock device for a large door is structurally shown in figure 1 and is installed on a door leaf frame 23 and used for locking the door leaf frame 23 on a frame panel 6, and comprises a top locking point unit, an opening unit, a bottom locking point unit and a linkage unit 3, wherein the top locking point unit and the bottom locking point unit are respectively installed at the top and the bottom of the door leaf frame 23, the opening unit is installed on the door leaf frame 23 and located between the top locking point unit and the bottom locking point unit, the opening unit is respectively connected with the top locking point unit and the bottom locking point unit through the linkage unit 3, and the opening unit controls the top locking point unit and the bottom locking point unit through the linkage unit 3 to realize opening and closing actions.
If fig. 2, fig. 4, fig. 6 and fig. 7 are shown, it includes handle 1 to open the unit, middle part lock box 2, lock body 9, square shaft 10 and handle square hole pore wall 11, lock body 9 sets up in middle part lock box 2, square shaft 10 sets up on lock body 9, be equipped with the handle square hole pore wall 11 that is used for installing handle 1 on the square shaft 10, handle 1 is installed on middle part lock box 2, handle 1 inserts handle square hole pore wall 11, the top of lock body 9 is passed through linkage unit 3 and is linked to each other with top lock point unit, linkage unit 3 and bottom lock point unit are passed through to the bottom of lock body 9 and are linked to each other.
The lock body 9 in the embodiment is a sheet lock body, which is beneficial to reducing the weight of the lock body, thereby reducing the opening and closing force and facilitating the opening of the door leaf.
The opening unit is provided with a lock body automatic recovery mechanism, the lock body automatic recovery mechanism comprises a tension spring 12 and a connecting steel plate 13, the connecting steel plate 13 is fixed on the inner wall of the middle lock box 2, one end of the tension spring 12 is connected with the lock body 9, and the other end of the tension spring is connected with the connecting steel plate 13.
The unlocking unit is provided with a lock body limiting structure, the lock body limiting structure comprises an A limiting steel plate 14 used for limiting the lock body in a locking state and a B limiting steel plate 15 used for limiting the lock body in a unlocking state, and the A limiting steel plate 14 and the B limiting steel plate 15 are respectively fixed on the inner wall of the middle lock box 2.
The top locking point unit comprises an upper lock box 4, an upper lock tongue 5 and a lock tongue transmission mechanism, the lock tongue transmission mechanism is installed in the upper lock box 4, the top end of the lock tongue transmission mechanism extends out of the upper lock box 4 and then is connected with the upper lock tongue 5, a lock hole is formed in the frame panel 6, and the upper lock tongue 5 corresponds to the lock hole in position and is matched in shape.
The bottom lock point unit comprises a lower lock box 7, a lower lock tongue 8 and a lock tongue transmission mechanism, the lock tongue transmission mechanism is installed in the lower lock box 7, the top end of the lock tongue transmission mechanism extends out of the lower lock box 7 and then is connected with the lower lock tongue 8, and the lower lock tongue 8 corresponds to a ground notch 24 formed in the ground and is matched in shape.
The lock tongue transmission mechanism comprises an arc-shaped lug plate 17, a square lug plate 18 and a lock rod 19, one end of the arc-shaped lug plate 17 is connected with the linkage unit 3, the other end of the arc-shaped lug plate is connected with the square lug plate 18, the other end of the square lug plate 18 is connected with the lock rod 19, the other end of the lock rod 19 extends out of the lock box and then is connected with the upper lock tongue 5 or the lower lock tongue 8, and the lock rod 19 is movably connected with the upper lock box 4 or the lower lock box 7.
The top locking point unit and the bottom locking point unit are both provided with a locking tongue automatic recovery mechanism, the locking tongue automatic recovery mechanism comprises a pressure hard spring 20, a steel plate 21 for a fixed spring and a spring baffle 22, the steel plate 21 for the fixed spring is fixed in the upper lock box 4 or the lower lock box 7, a through hole for a locking rod 19 to pass through is formed in the steel plate 21 for the fixed spring, the locking rod 19 is movably connected with the steel plate 21 for the fixed spring, the spring baffle 22 is fixed on the locking rod 19, the locking rod 19 sequentially passes through the steel plate 21 for the fixed spring, then the spring baffle 22 passes through the upper lock box 4 or the lower lock box 7, and finally is connected with the upper locking tongue 5 or the lower locking tongue 8, the pressure hard spring 20 is sleeved on the locking rod 19, and the installation position is between.
The linkage unit 3 in the embodiment adopts the steel cable, the diameter of the steel cable can be selected to be smaller as required, and the lock body and the lock box which are smaller in size and the transmission mechanism with smaller weight are adopted, so that the failure rate in opening and closing is favorably reduced.
As shown in fig. 3, in the present embodiment, sleeves 16 are provided on the middle lock box 2, the upper lock box 4, and the lower lock box 7, bolts are installed in the sleeves 16, and the middle lock box 2, the upper lock box 4, and the lower lock box 7 are fixed to the door leaf frame 23 by the bolts.
In figure 2 the door lock system is in the locked position and the lock body 9 is in the upright position with its upper left part resting against the a-stop steel plate 14. The tension spring 12 is in a natural state without tension, the handle 1 is in a horizontal state, as shown in a direction in fig. 4, the upper lock tongue 5 is inserted into a corresponding hole of the frame panel 6, the lower lock tongue 8 is inserted into the ground notch 24, and the whole door leaf is in a closed state.
In fig. 6, the door lock system is in an open state, the handle 1 is rotated clockwise, the handle 1 is rotated by an angle, the handle is not rotated, and the handle is shown in fig. 5 and is rotated after being rotated, so that the handle is shown in fig. 8. The wall 11 of the square hole drives the square shaft 10 and the lock body 9 to rotate clockwise and drives the linkage unit 3 to move, the upper linkage unit 3 moves downwards, and the lower linkage unit 3 moves upwards. The tension spring 12 is elongated and there is a tension force inside which the lock body 9 is pulled back to the upright state. The lock body 9 rotates clockwise to the B limiting steel plate 15 and cannot rotate continuously after being blocked by the B limiting steel plate 15. The upper linkage unit 3 drives the upper transmission mechanism to move downwards, wherein the upper transmission mechanism comprises an upper arc lug plate 17, a square lug plate 18, a lock rod 19, a spring baffle plate 22 and an upper lock tongue 5. The upper spring retainer 22 compresses the compression hard spring 20 while the upper bolt 5 moves out of the bezel panel 6. The lower linkage unit 3 drives the lower transmission mechanism to move upwards, and the lower transmission mechanism comprises an arc lug plate 17, a square lug plate 18, a lock rod 19, a spring baffle plate 22 and a lower lock tongue 8. The lower spring retainer 22 compresses the compression firm spring 20 while the lower bolt 8 moves out of the floor slot 24. At this time, the door leaf frame 23 is opened by pulling the handle 1.
When the door is closed, the door leaf frame 23 is firstly rotated to the state shown in fig. 1, the handle 1 is loosened, the tension spring 12 pulls the lock body 9, and the lock body 9 is rotated anticlockwise to the vertical state shown in fig. 2 from the inclined state shown in fig. 6. At the same time, the upper pressure hard spring 20 jacks up the upper spring retainer 22, the upper bolt 5 and jacks up the upper bolt 5 into the frame panel 6. The lower pressure firm spring 20 lifts the lower spring retainer 22, the lower bolt 8 and the lower bolt 8 into the floor slot 24. The door frame 23 is in a closed state at this time. The door lock system returns to the locked state of fig. 2.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A door lock device for a large-sized door, which is installed on a door leaf frame (23) for locking the door leaf frame (23) on a frame panel (6), characterized in that the door lock device comprises a top locking point unit, an opening unit, a bottom locking point unit and a linkage unit (3); the top locking point unit and the bottom locking point unit are respectively arranged at the top and the bottom of the door leaf frame (23); the opening unit is arranged on the door leaf frame (23) and is positioned between the top locking point unit and the bottom locking point unit; the opening unit is respectively connected with the top locking point unit and the bottom locking point unit through a linkage unit (3); the unlocking unit controls the top locking point unit and the bottom locking point unit through the linkage unit (3) to realize unlocking and locking actions.
2. A door-lock apparatus for a large-sized door according to claim 1, wherein the opening unit comprises a handle (1), a middle lock case (2), a lock body (9), a square shaft (10), and a handle square hole wall (11); the lock body (9) is arranged in the middle lock box (2); the square shaft (10) is arranged on the lock body (9); the square shaft (10) is provided with a handle square hole wall (11) for mounting the handle (1); the handle (1) is arranged on the middle lock box (2), and the handle (1) is inserted into the hole wall (11) of the handle square hole; the top of the lock body (9) is connected with the top locking point unit through the linkage unit (3), and the bottom of the lock body (9) is connected with the bottom locking point unit through the linkage unit (3).
3. A door-locking device for large-sized doors, according to claim 2, characterized in that said lock body (9) is a plate-like lock body.
4. The door-lock apparatus for large-sized doors as claimed in claim 2, wherein the opening unit is provided with a lock body automatic recovery mechanism; the automatic lock body recovery mechanism comprises a tension spring (12) and a connecting steel plate (13); the connecting steel plate (13) is fixed on the inner wall of the middle lock box (2); one end of the tension spring (12) is connected with the lock body (9), and the other end is connected with the connecting steel plate (13).
5. The door-lock apparatus for a large-sized door as claimed in claim 2, wherein the opening unit is provided with a lock body stopper structure; the lock body limiting structure comprises an A limiting steel plate (14) used for limiting the lock body in a locking state and a B limiting steel plate (15) used for limiting the lock body in an opening state; the A limiting steel plate (14) and the B limiting steel plate (15) are respectively fixed on the inner wall of the middle lock box (2).
6. A door lock device for a large-sized door as claimed in claim 2, wherein said top locking point unit comprises an upper lock case (4), an upper latch bolt (5) and a bolt actuator; the lock tongue transmission mechanism is arranged in the upper lock box (4), and the top end of the lock tongue transmission mechanism extends out of the upper lock box (4) and then is connected with an upper lock tongue (5); the frame panel (6) is provided with a lock hole; the upper lock tongue (5) corresponds to the lock hole in position and is matched with the lock hole in shape;
the bottom locking point unit comprises a lower lock box (7), a lower lock tongue (8) and a lock tongue transmission mechanism; the lock tongue transmission mechanism is arranged in the lower lock box (7), and the top end of the lock tongue transmission mechanism extends out of the lower lock box (7) and then is connected with a lower lock tongue (8); the lower lock tongue (8) corresponds to a ground notch (24) arranged on the ground and is matched with the ground notch in shape.
7. The door lock device for large-sized doors as claimed in claim 6, wherein said latch bolt driving mechanism comprises an arc-shaped lug plate (17), a square-shaped lug plate (18) and a lock lever (19); one end of the arc-shaped ear plate (17) is connected with the linkage unit (3), and the other end of the arc-shaped ear plate is connected with the square ear plate (18); the other end of the square ear plate (18) is connected with a lock rod (19); the other end of the lock rod (19) extends out of the lock box and then is connected with the upper lock bolt (5) or the lower lock bolt (8); the lock rod (19) is movably connected with the upper lock box (4) or the lower lock box (7).
8. The door-lock apparatus for large-sized doors as claimed in claim 7, wherein the top locking point unit and the bottom locking point unit are provided with a dead bolt automatic recovery mechanism; the automatic bolt recovery mechanism comprises a pressure hard spring (20), a steel plate (21) for fixing the spring and a spring baffle plate (22); the steel plate (21) for the fixed spring is fixed in the upper lock box (4) or the lower lock box (7), a through hole for the lock rod (19) to pass through is formed in the steel plate (21) for the fixed spring, and the lock rod (19) is movably connected with the steel plate (21) for the fixed spring; the spring baffle (22) is fixed on the lock rod (19); the lock rod (19) sequentially penetrates through a steel plate (21) for fixing the spring, then a spring baffle (22) penetrates through the upper lock box (4) or the lower lock box (7), and finally is connected with the upper lock tongue (5) or the lower lock tongue (8); the pressure hard spring (20) is sleeved on the lock rod (19), and the installation position is between the steel plate (21) for fixing the spring and the spring baffle plate (22).
9. A door-locking device for large-sized doors according to claim 6, characterized in that the middle lock case (2), the upper lock case (4) and the lower lock case (7) are provided with sleeves (16); a bolt is arranged in the sleeve (16); the middle lock box (2), the upper lock box (4) and the lower lock box (7) are fixed on the door leaf frame (23) through bolts.
10. A door-locking device for large-sized doors, according to claim 1, characterized in that said linkage unit (3) is a wire rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110452847.3A CN113027261A (en) | 2021-04-26 | 2021-04-26 | Door lock device for large door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110452847.3A CN113027261A (en) | 2021-04-26 | 2021-04-26 | Door lock device for large door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113027261A true CN113027261A (en) | 2021-06-25 |
Family
ID=76454641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110452847.3A Pending CN113027261A (en) | 2021-04-26 | 2021-04-26 | Door lock device for large door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113027261A (en) |
-
2021
- 2021-04-26 CN CN202110452847.3A patent/CN113027261A/en active Pending
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Address after: 201108 room 5194, building e, 555 Dongchuan Road, Minhang District, Shanghai Applicant after: Wall housekeeper construction technology (Shanghai) Co.,Ltd. Applicant after: Shanghai Boji intelligent curtain wall Co., Ltd Address before: 201108 room 5194, building e, 555 Dongchuan Road, Minhang District, Shanghai Applicant before: Wall Butler data service (Shanghai) Co.,Ltd. Applicant before: Shanghai Boji intelligent curtain wall Co., Ltd |