CN106223719B - Water-proof type door lock - Google Patents
Water-proof type door lock Download PDFInfo
- Publication number
- CN106223719B CN106223719B CN201610701803.9A CN201610701803A CN106223719B CN 106223719 B CN106223719 B CN 106223719B CN 201610701803 A CN201610701803 A CN 201610701803A CN 106223719 B CN106223719 B CN 106223719B
- Authority
- CN
- China
- Prior art keywords
- lock core
- axle sleeve
- design
- axis
- locking bar
- 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
- 230000007246 mechanism Effects 0.000 claims abstract description 60
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 238000005192 partition Methods 0.000 claims description 12
- 230000007704 transition Effects 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 11
- 235000005121 Sorbus torminalis Nutrition 0.000 claims description 3
- 244000152100 Sorbus torminalis Species 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B3/00—Fastening knobs or handles to lock or latch parts
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B17/00—Accessories in connection with locks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lock And Its Accessories (AREA)
Abstract
The present invention relates to door lock fields, and in particular to a kind of water-proof type door lock.It includes handle, lock core mechanism, bolt mechanism, locking bar, lock core mechanism is mounted in the middle position of door, bolt mechanism is attached separately to the top and bottom of door, and lock core mechanism is separately connected the bolt mechanism of connection upper end by locking bar or the bolt mechanism of lower end, lock core mechanism side and handle are cooperatively connected.Advantage is, ingenious in design, structurally reasonable compact, and lock core mechanism designs sealing structure waterproof cover, sealing ring, and effective waterproof extends the service life of equipment.
Description
Technical field
The present invention relates to door lock fields, and in particular to a kind of water-proof type door lock.
Background technique
Previous door lock designs non-watertight, lock core mechanism blow-by, once encountering has the case where water, just will appear water water along
Axis flows to lock core position, and lock core is caused to corrode, card plug, leads to the reduction of door lock service life, while previous latch mechanism design
Not reasonable, structure is not compact, cannot rationally utilize space, not be able to satisfy the needs of different doors.
Summary of the invention
To solve the above-mentioned problems, the invention proposes a kind of water-proof type door locks, ingenious in design, structurally reasonable compact, lock
Core mechanism designs sealing structure, and effective waterproof extends the service life of equipment.
In order to reach goal of the invention, the invention proposes following technical schemes:
Water-proof type door lock, it includes handle, lock core mechanism, bolt mechanism, locking bar, and lock core mechanism is mounted in the interposition of door
It sets, bolt mechanism is attached separately to the top and bottom of door, and lock core mechanism is separately connected the bolt mechanism of connection upper end by locking bar
Or the bolt mechanism of lower end, lock core mechanism side and handle are cooperatively connected.
The lock core mechanism includes lock core, limit film, bolt, partition, axis, axle sleeve, spring, waterproof cover, lock core both ends
Connection locking bar is rotated by rivet respectively, lock core outside mask has limit film, and limit film both ends are fixed on door, and installation is provided on door
Lockhole, axle sleeve are mounted in installation lockhole, and axle sleeve is provided with axis, and spring is housed between axis and axle sleeve, and spring one end withstands on axle sleeve
Interior bottom end, the spring other end withstand on axis on the circle annular convex platform that front position designs, and axis Front-end Design has waterproof cover lid
In axle sleeve front end, shaft rear end passes through axle sleeve and is inserted in lock core and is bolted in limit film, between limit film and lock core
Design has partition to cover between shaft rear end, axle sleeve rear end and axis equipped with sealing ring.
The lock core mechanism includes lock core, limit film, bolt, partition, axis, axle sleeve, waterproof cover, and lock core both ends lead to respectively
Rivet rotation connection locking bar is crossed, lock core outside mask has limit film, and limit film both ends are fixed on door, installation lockhole is provided on door,
Axle sleeve is mounted in installation lockhole, and axle sleeve is provided with axis, and axis Front-end Design has waterproof cover to cover in axle sleeve front end, and shaft rear end passes through axis
Set is inserted in lock core and is bolted in limit film, and design has partition to cover in shaft rear end, axis between limit film and lock core
Set is intermediate to be equipped with sealing ring between axis.
The waterproof cover includes knob, cover board, annular nib, connection ring, and cover plate perimeter position is shaken hands equipped with one,
Annular nib is housed, design has the convex tooth of three seals on the inside of cover board, and design there are three seals convex on the outside of annular nib on the inside of cover board
Platform, annular nib are inserted in axle sleeve, and cover plate lid is on the outside of axle sleeve, and knob outside is also configured with anti-skid chequer, and connection ring snare is in axis
Set outside and connection ring side connecting cover plate, waterproof cover is using the molding of silicon rubber integral production.
It is cylindrical shaft among the axis, cylindrical shaft Front-end Design has triangular prism, triangular prism and cylindrical shaft
Between design have an annular convex platform, the design of cylindrical shaft rear end, which has, is provided with wire hole, cylinder among square prism and square prism end
Shape shaft rear end outside, which is designed, seal groove and vertically equipped with positioning pin, the axle sleeve rear end face, which corresponds to positioning pin and designs to have, to be determined
Position cotter way, the design of axle sleeve rear inside have annular protrusion, and spring one end is withstood on annular convex platform, and the other end is withstood on the inside of axle sleeve
On annular protrusion, seal groove is provided with sealing ring.
It is cylindrical shaft among the axis, cylindrical shaft Front-end Design has triangular prism, is provided among cylindrical shaft close
Seal slot, the design of cylindrical shaft rear end, which has, is provided with wire hole among square prism and square prism end, cylindrical shaft and rectangular rib
Design has annular convex platform between column, and rear end, which corresponds to annular convex platform design, on the inside of axle sleeve ring-shaped step, and annular convex platform is mounted in annular
In step, seal groove is provided with sealing ring.
The bolt mechanism includes pull rod, sliding sleeve, rivet, locking bar, and Men Shangduan or lower end internal vertical are provided with circular hole, circle
Fixed in hole that sliding sleeve is housed, sliding is equipped with pull rod in sliding sleeve, and pull rod one end rotates connection locking bar by rivet and the other end designs
Pin-shaped at cylinder, the tie rod central portion is designed to be provided with arc groove above square shape and square shape, and locking bar is divided into three
Section, upper section connecting rod, interlude are inside transition turnaround sections, and lower section connects lock core mechanism, in inside transition turnaround section connection
Section and lower section.
The bolt mechanism includes pull rod, sliding sleeve, rivet, locking bar, and Men Shangduan or lower end inside are equipped with by bracket to be slided
Set, sliding sleeve oral area are designed to square orifice, and sliding is equipped with pull rod in sliding sleeve, and pull rod one end rotates connection locking bar, pull rod by rivet
It is designed to rectangular block and the design of its end has a triangular cut, locking bar is divided into three sections, upper section connecting rod, and interlude is
Outside transition turnaround section, lower section connect lock core mechanism, outside transition turnaround section connection upper section and lower section.
It is an advantage of the invention that ingenious in design, structurally reasonable compact, lock core mechanism designs sealing structure waterproof cover, sealing
Circle, effective waterproof extend the service life of equipment.
Detailed description of the invention
Fig. 1 is schematic elevation view one of the invention.
Fig. 2 is the schematic side view of Fig. 1.
Fig. 3 is the schematic diagram one of the lock core mechanism of Fig. 2.
Fig. 4 is the schematic diagram two of the lock core mechanism of Fig. 2.
Fig. 5 is schematic elevation view two of the invention.
Fig. 6 is the schematic side view of Fig. 5.
Fig. 7 is waterproof cover schematic diagram of the invention.
Specific embodiment
Referring to attached drawing 1-7, water-proof type door lock, it includes handle 1, lock core mechanism 2, bolt mechanism 3, locking bar 4, lock core mechanism
1 is mounted in the middle position of door 5, and bolt mechanism 3 is attached separately to the top and bottom of door 5, and lock core mechanism 2 is connected respectively by locking bar 4
The bolt mechanism 3 at end or the bolt mechanism 3 of lower end are connected, 2 side of lock core mechanism and handle 1 are cooperatively connected.
Fig. 3, the lock core mechanism 2 include lock core 21, limit film 22, partition 24, axis 6, axle sleeve 7, spring 25, waterproof cover
8,21 both ends of lock core rotate connection locking bar 4 by rivet respectively, and 21 outside mask of lock core has limit film 22, and 22 both ends of limit film are fixed
On door 5, installation lockhole is provided on door 5, axle sleeve 7 is mounted in installation lockhole, and axle sleeve 7 is provided with axis 6, between axis 6 and axle sleeve 7
Equipped with spring 25,25 one end of spring withstands on bottom end in axle sleeve 7, and 25 other end of spring withstands on one that axis 6 is designed close to front position
It encloses on annular convex platform 61,6 Front-end Design of axis has waterproof cover 8 to cover in 7 front end of axle sleeve, and 6 rear end of axis passes through axle sleeve 7 and is inserted in lock core 21
And limit film 22 is then run through in rear end, between limit film 22 and lock core 21 design have 24 sets of partition in 6 rear end of axis, 7 rear end of axle sleeve
Sealing ring 26 is housed between axis 6.It is cylindrical shaft 63 among the axis 6,63 Front-end Design of cylindrical shaft has triangular prism
62, design has annular convex platform 61 between triangular prism 62 and cylindrical shaft 63, and the design of 63 rear end of cylindrical shaft has square prism 64
And wire hole is provided among 64 end of square prism, design has seal groove and vertically equipped with positioning pin on the outside of 63 rear end of cylindrical shaft
65,7 rear end face of axle sleeve, which corresponds to the design of positioning pin 65, positioning cotter way, and the design of 7 rear inside of axle sleeve has annular protrusion 71,
25 one end of spring is withstood on annular convex platform 61, and the other end is withstood on the annular protrusion 71 of 7 inside of axle sleeve, and seal groove is provided with close
Seal 26.Positioning pin 65 and the subsequent positioning cotter way of axle sleeve 7 are used cooperatively, and when closing door lock, positioning pin 65 is stuck in positioning cotter way
Interior, and under the action of spring 25, being located in positioning cotter way steadily of positioning pin 65, such door lock would not automatically open, peace
It is complete reliable.
Fig. 4, the lock core mechanism 2 include lock core 201, limit film 202, partition 204, axis 60, axle sleeve 70, waterproof cover 8,
201 both ends of lock core rotate connection locking bar 4 by rivet respectively, and 201 outside mask of lock core has limit film 202, and 202 both ends of limit film are solid
It is scheduled on door 5, installation lockhole is provided on door 5, axle sleeve 70 is mounted in installation lockhole, and axle sleeve 70 is provided with axis 60,60 front end of axis
Design has waterproof cover 8 to cover in 70 front end of axle sleeve, and 60 rear end of axis is inserted in lock core 201 across axle sleeve 70 and limit is then run through in rear end
Piece, between limit film 202 and lock core 201 design have 204 sets of partition among 60 rear end of axis, axle sleeve 70 between axis 60 equipped with close
Seal 206.It is cylindrical shaft 603 among the axis 60,603 Front-end Design of cylindrical shaft has triangular prism 602, cylindrical shaft
Seal groove is provided among 603, the design of 603 rear end of cylindrical shaft has to be provided among square prism 604 and 604 end of square prism
Wire hole, design has annular convex platform 601 between cylindrical shaft 603 and square prism 604, and 70 inside rear end of axle sleeve corresponds to annular convex platform
601 designs have ring-shaped step 701, and for annular convex platform 601 in ring-shaped step 701, seal groove is provided with sealing ring 206.
Waterproof cover 8 described in Fig. 3, Fig. 4, Fig. 7 includes knob 81, cover board 82, annular nib 83, connection ring 84, cover board
82 peripheral positions are equipped with a knob 81, and annular nib 83 is housed on the inside of cover board 82, and design has three seals convex on the inside of cover board 82
Tooth 85, design has three seals boss 86 on the outside of annular nib 83, and annular nib 83 is inserted in axle sleeve 7 or 70, and cover board 82 covers
Axle sleeve 7 or 70 outsides, 81 outside of knob are also configured with anti-skid chequer, and 84 sets of connection ring in axle sleeve 7 or 70 outsides and connection ring
84 side connecting cover plates 82, waterproof cover 8 are formed using silicon rubber integral production.
Fig. 5-6, the bolt mechanism 3 includes pull rod 31, sliding sleeve 32, rivet 33, locking bar 4, inside 5 upper end of door or lower end
It is vertically provided with circular hole, is fixed in circular hole and sliding sleeve 32 is housed, sliding is equipped with pull rod 31 in sliding sleeve 32, and 31 one end of pull rod passes through rivet 33
The rotation connection locking bar 4 and other end is designed to cylinder pin-shaped 34,31 middle section of pull rod are designed to square shape and rectangular
Arc groove is provided with above shape, locking bar 4 is divided into three sections, and 41 connecting rod 31 of upper section, interlude 42 is inside transition turnaround section 42,
Lower section 43 connects lock core mechanism 2, and inside transition turnaround section 42 connects upper section 41 and lower section 43.
Fig. 1-2, the bolt mechanism 3 include pull rod 301, sliding sleeve 302, rivet 303, locking bar 4,5 upper end of door or lower end
Inside is equipped with sliding sleeve 302 by bracket, and 302 oral area of sliding sleeve is designed to square orifice, and sliding is equipped with pull rod 301, pull rod in sliding sleeve 302
301 one end are by the rotation connection locking bar 4 of rivet 303, and pull rod 301 is designed to rectangular block and the design of its end has a triangle
Notch 304, locking bar 4 are divided into three sections, and 401 connecting rod 301 of upper section, interlude 402 is outside transition turnaround section 402, lower section 403
Lock core mechanism 2 is connected, outside transition turnaround section 402 connects upper section 401 and lower section 403.
The present invention is in use, waterproof cover is sealed lock core mechanism, and so over time, axis is also able to rotate, and spring is made
With being to prevent axis from sinking, can not reset, the design of latch mechanism meets the door use of different size, and it is convenient and efficient, when unlocking
Waterproof cover is opened, waterproof cover is covered after locking；Handle is L-type handle, and handle one end is equipped with sleeve, and sleeve inside groove is designed to
Triangular prism shape is matched with axis one end of lock core mechanism, and sleeve is inserted on the triangular prism of axis one end, rotating handles 90
Degree, handle drive shaft, axis drive lock core, are rotated by 90 ° lock core also, and lock core both ends drive locking bar, and locking bar drives pull rod, makes to draw
Bar extends outwardly, and door is closed, and 90 degree of handle cycle, door is opened.
Claims (6)
1. water-proof type door lock, which is characterized in that it includes handle, lock core mechanism, bolt mechanism, locking bar, and lock core mechanism is mounted in door
Middle position, bolt mechanism is attached separately to the top and bottom of door, and lock core mechanism is separately connected the bolt of upper end by locking bar
The bolt mechanism of mechanism and lower end, lock core mechanism side and handle are cooperatively connected；The lock core mechanism includes lock core, limit
Piece, bolt, partition, axis, axle sleeve, spring, waterproof cover, lock core both ends rotate connection locking bar, lock core outside mask by rivet respectively
There is limit film, limit film both ends are fixed on door, and installation lockhole is provided on door, and axle sleeve is mounted in installation lockhole, and axle sleeve is built-in
There is axis, spring is housed between axis and axle sleeve, spring one end withstands on bottom end in axle sleeve, and the spring other end withstands on axis close to front position
On one circle annular convex platform of design, axis Front-end Design has waterproof cover to cover in axle sleeve front end, and shaft rear end passes through axle sleeve and is inserted in lock core
And be bolted in limit film, design has partition to cover in shaft rear end between limit film and lock core, axle sleeve rear end and axis it
Between be equipped with sealing ring；Or the lock core mechanism includes lock core, limit film, bolt, partition, axis, axle sleeve, waterproof cover, lock core two
End rotates connection locking bar by rivet respectively, and lock core outside mask has limit film, and limit film both ends are fixed on door, and peace is provided on door
Lockhole is filled, axle sleeve is mounted in installation lockhole, and axle sleeve is provided with axis, and axis Front-end Design has waterproof cover to cover behind axle sleeve front end, axis
End is inserted in lock core across axle sleeve and is bolted in limit film, and design has partition to cover in axis between limit film and lock core
Rear end is equipped with sealing ring between axle sleeve centre and axis.
2. water-proof type door lock according to claim 1, it is characterized in that the waterproof cover includes knob, cover board, convex annular
Side, connection ring, cover plate perimeter position are equipped with annular nib equipped with a knob, cover board inside, and design has three on the inside of cover board
Seal convex tooth, design has three seals boss on the outside of annular nib, and annular nib is inserted in axle sleeve, cover plate lid on the outside of axle sleeve,
Knob outside is also configured with anti-skid chequer, and connection ring snare is on the outside of axle sleeve and connection ring side connecting cover plate, waterproof cover use
The molding of silicon rubber integral production.
3. water-proof type door lock according to claim 1, it is characterized in that being cylindrical shaft among the axis, before cylindrical shaft
End design has triangular prism, and design has annular convex platform between triangular prism and cylindrical shaft, and the design of cylindrical shaft rear end has rectangular
Wire hole is provided among prism and square prism end, design has seal groove and vertically equipped with positioning on the outside of cylindrical shaft rear end
Pin, the axle sleeve rear end face, which corresponds to positioning pin design, positioning cotter way, and the design of axle sleeve rear inside has annular protrusion, spring one
End is withstood on annular convex platform, and the other end is withstood on the annular protrusion on the inside of axle sleeve, and seal groove is provided with sealing ring.
4. water-proof type door lock according to claim 1, it is characterized in that being cylindrical shaft among the axis, before cylindrical shaft
End design has triangular prism, and seal groove is provided among cylindrical shaft, and the design of cylindrical shaft rear end has square prism and rectangular rib
Wire hole is provided among column end, design has annular convex platform between cylindrical shaft and square prism, the corresponding annular in rear end on the inside of axle sleeve
Boss design has ring-shaped step, and for annular convex platform in ring-shaped step, seal groove is provided with sealing ring.
5. water-proof type door lock according to claim 1, it is characterized in that the bolt mechanism include pull rod, sliding sleeve, rivet,
Locking bar, door top and bottom internal vertical are provided with circular hole, fix in circular hole and sliding sleeve is housed, and sliding is equipped with pull rod, pull rod in sliding sleeve
One end rotates connection locking bar by rivet and the other end is designed to that cylinder is pin-shaped, and the tie rod central portion is designed to square shape
And arc groove is provided with above square shape, locking bar is divided into three sections, and upper section connecting rod, interlude is inside transition turnaround section, under
Section connection lock core mechanism, inside transition turnaround section connection upper section and lower section.
6. water-proof type door lock according to claim 1, it is characterized in that the bolt mechanism include pull rod, sliding sleeve, rivet,
Locking bar, door top and bottom inside are equipped with sliding sleeve by bracket, and sliding sleeve oral area is designed to square orifice, and sliding, which is equipped with, in sliding sleeve draws
Bar, pull rod one end rotate connection locking bar by rivet, and pull rod is designed to rectangular block and the design of its end has a triangle to lack
Mouthful, locking bar is divided into three sections, and upper section connecting rod, interlude is outside transition turnaround section, and lower section connects lock core mechanism, outside transition
Turnaround section connects upper section and lower section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610701803.9A CN106223719B (en) | 2016-08-23 | 2016-08-23 | Water-proof type door lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610701803.9A CN106223719B (en) | 2016-08-23 | 2016-08-23 | Water-proof type door lock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106223719A CN106223719A (en) | 2016-12-14 |
| CN106223719B true CN106223719B (en) | 2019-03-01 |
Family
ID=57552892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610701803.9A Active CN106223719B (en) | 2016-08-23 | 2016-08-23 | Water-proof type door lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106223719B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1303819A (en) * | 1969-08-29 | 1973-01-24 | ||
| GB2101192A (en) * | 1981-07-01 | 1983-01-12 | Paul Garside | Securing devices for closures |
| CN2603171Y (en) * | 2002-12-23 | 2004-02-11 | 顺德特种变压器厂 | Water-proof built-in type door lock structure |
| CN2929105Y (en) * | 2006-05-09 | 2007-08-01 | 苏海 | Top and bottom door bolt device for convenient open and close |
| CN101487367A (en) * | 2009-02-26 | 2009-07-22 | 陆坚 | Lock and key matched with the same |
| CN202731424U (en) * | 2012-07-31 | 2013-02-13 | 温绍强 | Handle component for doors and windows |
| CN203008527U (en) * | 2012-11-14 | 2013-06-19 | 上海威士迪电子技术有限公司 | Electronic lock with functions of lock cylinder protection and cat eye door-open prevention |
| CN103883183A (en) * | 2012-12-21 | 2014-06-25 | 中国直升机设计研究所 | Embedded-type latch mechanism and helicopter hatch door |
-
2016
- 2016-08-23 CN CN201610701803.9A patent/CN106223719B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1303819A (en) * | 1969-08-29 | 1973-01-24 | ||
| GB2101192A (en) * | 1981-07-01 | 1983-01-12 | Paul Garside | Securing devices for closures |
| CN2603171Y (en) * | 2002-12-23 | 2004-02-11 | 顺德特种变压器厂 | Water-proof built-in type door lock structure |
| CN2929105Y (en) * | 2006-05-09 | 2007-08-01 | 苏海 | Top and bottom door bolt device for convenient open and close |
| CN101487367A (en) * | 2009-02-26 | 2009-07-22 | 陆坚 | Lock and key matched with the same |
| CN202731424U (en) * | 2012-07-31 | 2013-02-13 | 温绍强 | Handle component for doors and windows |
| CN203008527U (en) * | 2012-11-14 | 2013-06-19 | 上海威士迪电子技术有限公司 | Electronic lock with functions of lock cylinder protection and cat eye door-open prevention |
| CN103883183A (en) * | 2012-12-21 | 2014-06-25 | 中国直升机设计研究所 | Embedded-type latch mechanism and helicopter hatch door |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106223719A (en) | 2016-12-14 |
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Effective date of registration: 20240320 Address after: 239000 No. 1910, Qingliu East Road, Chuzhou City, Anhui Province Patentee after: Anhui Kelu Equipment Co.,Ltd. Country or region after: Zhong Guo Address before: No. 2125 Waiqian Road, Jiading District, Shanghai, 200070 Patentee before: SHANGHAI KELU MACHINERY EQUIPMENT Co.,Ltd. Country or region before: Zhong Guo |
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