CN106089912A - A kind of shockproof self-locking screw - Google Patents
A kind of shockproof self-locking screw Download PDFInfo
- Publication number
- CN106089912A CN106089912A CN201610711664.8A CN201610711664A CN106089912A CN 106089912 A CN106089912 A CN 106089912A CN 201610711664 A CN201610711664 A CN 201610711664A CN 106089912 A CN106089912 A CN 106089912A
- Authority
- CN
- China
- Prior art keywords
- latch segment
- nut
- locking
- screw
- screw rod
- 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.)
- Granted
Links
- 230000007774 longterm Effects 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 7
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 claims description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims 1
- 235000011613 Pinus brutia Nutrition 0.000 claims 1
- 241000018646 Pinus brutia Species 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005096 rolling process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/02—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws divided longitudinally
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
Abstract
Invention describes a kind of shockproof self-locking screw, utilize the latch segment of locking pin, match with the through hole on nut, it is prevented from nut under long-term vibration environment, from screw rod, rotates loose or dislocation, effectively solve and solve existing bolt easy technical problem rotating loose or dislocation under the conditions of being in long-term vibration, it is achieved that the normal of rolling stock, automobile, bridge securing member, plant equipment, Aero-Space and household electrical appliances uses or safe operation；Present configuration is simple, and cost is relatively low, and safe effect is better than existing bolt, has certain market and application prospect.
Description
Technical field
The present invention relates to field of mechanical technique, a kind of shockproof self-locking screw.
Background technology
Known, common bolt does not the most all have auto-lock function, is used in general occasion and substantially can meet use requirement.
But it is used in the occasion that some vibrations are bigger, due to vibration, bolt looseness can be caused.The wherein railway carriage casing of rolling stock
Being chronically at vibrating state with locomotive, bolt falling used is relatively conventional；Used by the bridge securing member of some steel constructions
Bolt be also one of the emphasis safeguarded；Bolt a lot of bolts in the longtime running of equipment used in plant equipment also can
Occur loosening, rocked when Aero-Space wherein bolt used is by going up to the air also there will be loosening, wherein refrigerator, refrigerator-freezer, displaying
The regulation bolt of the product such as cabinet and wine cabinet, in transit product run into jolt, the situation such as vibrations, usually make screw rod unscrew even
Come off from product, put product to user installation and bring inconvenience, also can give the goodwill band of production Li Kou work enterprise
Carry out adverse effect.The most current various plant equipment its respectively form the connection between mechanism, parts and plant equipment body
How with bolts such as variator is with being fastenedly connected of chassis etc., and various transmission pipeline is many by the connection of adpting flange
Bolt, nut is used to connect.Traditional bolt, nut connected mode are along with shaking that logistics campaign in mechanical movement or pipeline causes
Action use, the merit silk of bolt meeting relative device body produces and loosens, and can relatively produce loosening between nuts and bolt, of long duration
Even can cause nut or bolt falling, and then produce serious potential safety hazard.In order to prevent the fastening connection piece such as bolt, nut
Loosen, people used spring pad and various loosing-proof device to meet the needs that various plant equipment is fastenedly connected later.But
Owing to above-mentioned measure yet suffers from anti-impact force difference and the defect of anti-vibration scarce capacity in actual use, use bolt, spiral shell
The plant equipment that mother is fastenedly connected still is susceptible to connect the problem loosened, so that connector loses them in running
The function of self, causes device damage or is not normally functioning.
Along with the progress of society's science and technology, industrial and agricultural production mechanization, automaticity rapidly improve, the peace to plant equipment
Full property is had higher requirement.For the purpose of safety, more require the attachment security between plant equipment, parts, reliable,
The loss otherwise caused the security of the lives and property of working people and the economy of country, collective, by being huge, is also unfavorable for
The harmony of society, stable development.Therefore, it is necessary to design a kind of fixing connector connecting reliably, using safety.
Summary of the invention
The technical problem to be solved is to provide a kind of shockproof self-locking screw, by arranging latch segment, is used for solving
Certainly existing bolt easily rotates the technical problem of loose or dislocation under the conditions of being in long-term vibration.
In order to realize solving the purpose of above-mentioned technical problem, present invention employs following technical scheme:
The shockproof self-locking screw of one of the present invention, for preventing the bolt as fixing connector under the conditions of being in long-term vibration
Rotate loose or dislocation, it is characterized in that: include bolt and latch segment；
Described bolt includes screwing head, screw rod and nut；Screw rod is vertically set on and screws below head, and its side is provided with locking slot；
Described latch segment is provided with the through hole matched with screw rod, and this through-hole wall is provided with the lug, nib matched with locking slot；
It is provided with blind hole below latch segment, in this blind hole, is provided with locking pin；It is connected by flexible member between locking pin with latch segment, makes locking
Pin can stretch out or retraction blind hole；Latch segment is enclosed within screw rod, and its lug, nib is positioned in the locking slot of screw rod side, is used for preventing lock
Tight block rotates；
Described nut is provided with the through hole corresponding with locking pin；Nut sleeve, on screw rod, is positioned at below latch segment, on latch segment
The through hole that is positioned on nut of locking pin.
Concrete: described in screw head be outer six sides, interior six sides, outer four directions or interior tetragonal.
Concrete: it is equipped with alignment mark on described latch segment and nut.This makes on latch segment when being for the ease of using
Locking pin and nut on through-hole alignment.
Concrete: described locking pin lower end is hemispherical dome structure.When this is for the ease of using this shockproof self-locking screw, peace
Loading nut.
Concrete: the through-hole wall of described latch segment is provided with elastic layer.This is owing to latch segment inwall is shiny surface, and
Screw rod outer wall is provided with external screw thread, arranges elastic layer and not only contribute to make latch segment tighter with coordinating of screw rod on latch segment inwall
Close, and be conducive to protect screw rod external screw thread, prevent its under long-term vibration environment with latch segment inwall rigid contact and be subject to
Damage.
Concrete: described bolt also includes cushion, and this cushion is arranged on above latch segment.This is to enable fine adjustment
Nut rotates, it is simple to the through hole on nut is corresponding with the locking pin on latch segment.
Concrete: described latch segment is arranged over elastic layer.
Concrete: described shockproof self-locking screw also includes mounting blocks, and this mounting blocks is a cylindrical section being provided with expansion-head, should
The length of cylindrical section is equal to the thickness of nut.When installing nut, this mounting blocks is inserted from below in the through hole on nut, then
Through hole on nut is just blocked by the cylindrical section of mounting blocks, then rotates fastening nut and makes the through hole on nut and latch segment
On locking pin corresponding, then pull out mounting blocks, then, in locking pin falls into the through hole on nut, make locking pin and nut join
Knot, owing to locking pin can not rotate, then nut also can not rotate, thus prevent nut under long-term vibration environment, from screw rod
Rotate loose or dislocation.
The most concrete: the material of described mounting blocks is rubber.Utilize the elasticity of quality of rubber materials, beneficially mounting blocks with
The tight fit of nut, prevents its landing when rotating nut.
These technical schemes, the technical scheme including the technical scheme improved and improvement further can also be combined with each other
Or in conjunction with, thus reach superior technique effect.
By using technique scheme, the present invention has a following beneficial effect:
The shockproof self-locking screw of one of the present invention, utilizes the latch segment of locking pin, matches with the through hole on nut, it is possible to anti-
Only nut rotates loose or dislocation under long-term vibration environment from screw rod, effectively solves the existing bolt of solution and is being in for a long time
Easily rotate the technical problem of loose or dislocation under the conditions of vibrations, it is achieved that rolling stock, automobile, bridge securing member, plant equipment,
Aero-Space and the normal of household electrical appliances use or safe operation；Present configuration is simple, and cost is relatively low, and safe effect is better than existing spiral shell
Bolt, has certain market and application prospect.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the structural representation of screw rod.
Fig. 3 is the structural representation of latch segment.
Fig. 4 is the sectional view of latch segment.
Fig. 5 is the structural representation of nut.
Fig. 6 is the structural representation of mounting blocks.
In figure: 1-bolt, 2-latch segment, 3-screws head, 4-screw rod, 5-nut, 6-locking slot, 7-lug, nib, 8-locking pin,
9-elastic layer, 10-flexible member, 11-blind hole.
Detailed description of the invention
With embodiment, this patent is further explained below in conjunction with the accompanying drawings.But the protection domain of this patent is not limited to tool
The embodiment of body.
Embodiment 1
As shown in drawings, the shockproof self-locking screw of one of this patent, for preventing the bolt as fixing connector being in length
Rotate loose or dislocation under the conditions of phase vibrations, it is characterized in that: include bolt 1 and latch segment 2.
Bolt 1 includes screwing 3, screw rod 4 and a nut 5；Screw rod 4 is vertically set on and screws below 3, and its side is provided with lock
Tight groove 6.
Latch segment 2 is provided with the through hole matched with screw rod 4, and this through-hole wall is provided with match with locking slot 6 prominent
Rib 7；It is provided with blind hole 11 below latch segment 2, in this blind hole 11, is provided with locking pin 8；By elastic unit between locking pin 8 and latch segment 2
Part 10 is connected, and makes locking pin 8 to stretch out or retraction blind hole 11；Latch segment 2 is enclosed within screw rod 4, and its lug, nib 7 is positioned at screw rod 4 side
In the locking slot 6 in face, it is used for preventing latch segment 2 from rotating.
Nut 5 is provided with the through hole corresponding with locking pin 8；Nut 5 is enclosed within screw rod 4, is positioned at below latch segment 2, lock
Locking pin 8 on tight block 2 is positioned at the through hole on nut 5.
Wherein, 3 are screwed for outer six sides；Being equipped with alignment mark on latch segment 2 and nut 5, this is for the ease of using
Time make locking pin on latch segment 28 and the through-hole alignment on nut 5；Locking pin 8 lower end is hemispherical dome structure, and this is in order to just
In time using this shockproof self-locking screw 1, nut 5 is installed.
The through-hole wall of latch segment 2 is provided with elastic layer 9, and this is owing to latch segment 2 inwall is shiny surface, and outside screw rod 4
Wall is provided with external screw thread, arranges elastic layer 9 and not only contribute to make latch segment 2 tighter with coordinating of screw rod 4 on latch segment 2 inwall
Close, and be conducive to protect screw rod 4 external screw thread, prevent its under long-term vibration environment with latch segment 2 inwall rigid contact and
Impaired.
Bolt 1 also includes cushion, and this cushion is arranged on above latch segment 2, and this is to revolve to enable fine adjustment nut 5
Turn, it is simple to the through hole on nut 5 is corresponding with the locking pin 8 on latch segment 2.
This shockproof self-locking screw also includes mounting blocks, and this mounting blocks is a cylindrical section being provided with expansion-head, this cylindrical section
Length is equal to the thickness of nut 5.When installing nut 5, this mounting blocks is inserted in the through hole on nut 5 from below, then installs
Through hole on nut 5 is just blocked by the cylindrical section of block, then rotates fastening nut 5 and makes the through hole on nut 5 and latch segment 2
On locking pin 8 corresponding, then pull out mounting blocks, then, in locking pin 8 falls into the through hole on nut 5, make locking pin 8 and nut
5 connection, owing to locking pin 8 can not rotate, then nut 5 also can not rotate, thus prevent nut 5 under long-term vibration environment, from
Loose or dislocation is rotated on screw rod 4.
The material of mounting blocks is rubber, utilizes the tight fit of the elasticity of quality of rubber materials, beneficially mounting blocks and nut 5, anti-
Only its landing when rotating nut 5.
Embodiment 2
As shown in drawings, the shockproof self-locking screw of one of this patent, for preventing the bolt as fixing connector being in length
Rotate loose or dislocation under the conditions of phase vibrations, it is characterized in that: include bolt 1 and latch segment 2.
Bolt 1 includes screwing 3, screw rod 4 and a nut 5；Screw rod 4 is vertically set on and screws below 3, and its side is provided with lock
Tight groove 6.
Latch segment 2 is provided with the through hole matched with screw rod 4, and this through-hole wall is provided with match with locking slot 6 prominent
Rib 7；It is provided with blind hole 11 below latch segment 2, in this blind hole 11, is provided with locking pin 8；By elastic unit between locking pin 8 and latch segment 2
Part 10 is connected, and makes locking pin 8 to stretch out or retraction blind hole 11；Latch segment 2 is enclosed within screw rod 4, and its lug, nib 7 is positioned at screw rod 4 side
In the locking slot 6 in face, it is used for preventing latch segment 2 from rotating.
Nut 5 is provided with the through hole corresponding with locking pin 8；Nut 5 is enclosed within screw rod 4, is positioned at below latch segment 2, lock
Locking pin 8 on tight block 2 is positioned at the through hole on nut 5.
Wherein, 3 are screwed for interior hexagonal structure；Be equipped with alignment mark on latch segment 2 and nut 5, this be for the ease of
The locking pin 8 on latch segment 2 and the through-hole alignment on nut 5 is made during use；Locking pin 8 lower end is hemispherical dome structure, this be for
When being easy to use this shockproof self-locking screw 1, nut 5 is installed.
The through-hole wall of latch segment 2 is provided with elastic layer 9, and this is owing to latch segment 2 inwall is shiny surface, and outside screw rod 4
Wall is provided with external screw thread, arranges elastic layer 9 and not only contribute to make latch segment 2 tighter with coordinating of screw rod 4 on latch segment 2 inwall
Close, and be conducive to protect screw rod 4 external screw thread, prevent its under long-term vibration environment with latch segment 2 inwall rigid contact and
Impaired.
Latch segment 2 is arranged over elastic layer, and this elastic layer is arranged on above latch segment 2, is to revolve to enable fine adjustment nut 5
Turn, it is simple to the through hole on nut 5 is corresponding with the locking pin 8 on latch segment 2.
This shockproof self-locking screw also includes mounting blocks, and this mounting blocks is a cylindrical section being provided with expansion-head, this cylindrical section
Length is equal to the thickness of nut 5.When installing nut 5, this mounting blocks is inserted in the through hole on nut 5 from below, then installs
Through hole on nut 5 is just blocked by the cylindrical section of block, then rotates fastening nut 5 and makes the through hole on nut 5 and latch segment 2
On locking pin 8 corresponding, then pull out mounting blocks, then, in locking pin 8 falls into the through hole on nut 5, make locking pin 8 and nut
5 connection, owing to locking pin 8 can not rotate, then nut 5 also can not rotate, thus prevent nut 5 under long-term vibration environment, from
Loose or dislocation is rotated on screw rod 4.
The material of mounting blocks is rubber, utilizes the tight fit of the elasticity of quality of rubber materials, beneficially mounting blocks and nut 5, anti-
Only its landing when rotating nut 5.
Claims (9)
1. a shockproof self-locking screw, for preventing the bolt as fixing connector from rotating pine under the conditions of being in long-term vibration
Move and come off, it is characterized in that: include bolt and latch segment；
Described bolt includes screwing head, screw rod and nut；Screw rod is vertically set on and screws below head, and its side is provided with locking slot；
Described latch segment is provided with the through hole matched with screw rod, and this through-hole wall is provided with the lug, nib matched with locking slot；
It is provided with blind hole below latch segment, in this blind hole, is provided with locking pin；It is connected by flexible member between locking pin with latch segment, makes locking
Pin can stretch out or retraction blind hole；Latch segment is enclosed within screw rod, and its lug, nib is positioned in the locking slot of screw rod side, is used for preventing lock
Tight block rotates；
Described nut is provided with the through hole corresponding with locking pin；Nut sleeve, on screw rod, is positioned at below latch segment, on latch segment
The through hole that is positioned on nut of locking pin.
The most shockproof self-locking screw, is characterized in that: described screw head be outer six sides, interior six sides, outer four
Square or interior tetragonal.
The most shockproof self-locking screw, is characterized in that: be equipped with fiducial mark on described latch segment and nut
Note.
The most shockproof self-locking screw, is characterized in that: described locking pin lower end is hemispherical dome structure.
The most shockproof self-locking screw, is characterized in that: the through-hole wall of described latch segment is provided with elasticity
Layer.
The most shockproof self-locking screw, is characterized in that: described bolt also includes cushion, this cushion
It is arranged on above latch segment.
The most shockproof self-locking screw, is characterized in that: described latch segment is arranged over elastic layer.
The most shockproof self-locking screw, is characterized in that: described shockproof self-locking screw also includes mounting blocks,
This mounting blocks is a cylindrical section being provided with expansion-head, and the length of this cylindrical section is equal to the thickness of nut.
The most according to claim 8, it is characterized in that: the material of described mounting blocks is rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610711664.8A CN106089912B (en) | 2016-08-24 | 2016-08-24 | A kind of shockproof self-locking screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610711664.8A CN106089912B (en) | 2016-08-24 | 2016-08-24 | A kind of shockproof self-locking screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106089912A true CN106089912A (en) | 2016-11-09 |
| CN106089912B CN106089912B (en) | 2018-06-19 |
Family
ID=57224724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610711664.8A Active CN106089912B (en) | 2016-08-24 | 2016-08-24 | A kind of shockproof self-locking screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106089912B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119511A (en) * | 2018-02-19 | 2018-06-05 | 何长青 | A kind of double nut reverse thread anti-loosing fixing device |
| CN110332198A (en) * | 2018-11-29 | 2019-10-15 | 万金根 | A kind of never becoming loose screw with groove |
| CN111172815A (en) * | 2020-01-15 | 2020-05-19 | 何秀玲 | Self-locking train track fixing device convenient for confirming looseness |
| CN112901628A (en) * | 2021-01-15 | 2021-06-04 | 紧固仓盟(江苏)科技有限公司 | Assembly screw with adjustable structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB523403A (en) * | 1938-12-31 | 1940-07-15 | Oliver Edwin Simmonds | Improvements relating to self-locking nuts and like internally screw-threaded members |
| US4971501A (en) * | 1984-03-16 | 1990-11-20 | Hi-Shear Corporation | Self-locking, releasable lock nut |
| CN2303120Y (en) * | 1996-09-23 | 1999-01-06 | 邹高扬 | Looseness-proof screw |
| CN2459476Y (en) * | 2000-12-08 | 2001-11-14 | 吉万年 | Self-locking screw bolt and nut |
-
2016
- 2016-08-24 CN CN201610711664.8A patent/CN106089912B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB523403A (en) * | 1938-12-31 | 1940-07-15 | Oliver Edwin Simmonds | Improvements relating to self-locking nuts and like internally screw-threaded members |
| US4971501A (en) * | 1984-03-16 | 1990-11-20 | Hi-Shear Corporation | Self-locking, releasable lock nut |
| CN2303120Y (en) * | 1996-09-23 | 1999-01-06 | 邹高扬 | Looseness-proof screw |
| CN2459476Y (en) * | 2000-12-08 | 2001-11-14 | 吉万年 | Self-locking screw bolt and nut |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119511A (en) * | 2018-02-19 | 2018-06-05 | 何长青 | A kind of double nut reverse thread anti-loosing fixing device |
| CN110332198A (en) * | 2018-11-29 | 2019-10-15 | 万金根 | A kind of never becoming loose screw with groove |
| CN111172815A (en) * | 2020-01-15 | 2020-05-19 | 何秀玲 | Self-locking train track fixing device convenient for confirming looseness |
| CN111172815B (en) * | 2020-01-15 | 2021-08-10 | 申通南车(上海)轨道交通车辆维修有限公司 | Self-locking train track fixing device convenient for confirming looseness |
| CN112901628A (en) * | 2021-01-15 | 2021-06-04 | 紧固仓盟(江苏)科技有限公司 | Assembly screw with adjustable structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106089912B (en) | 2018-06-19 |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Weng Xiaoqin Inventor before: Yan Bingqian |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180330 Address after: 310000 one floor A area, 15 Avenue, Hangzhou economic and Technological Development Zone, Zhejiang Province Applicant after: HANGZHOU TONGNA HARDWARE MANUFACTURING Co.,Ltd. Address before: 471100 Henan city of Luoyang province Mengjin County town of Chaoyang Yan Ao Cun 2 groups Applicant before: Yan Bingqian |
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Effective date of registration: 20230214 Address after: 313201 New Town, Deqing County, Huzhou City, Zhejiang Province Le'an Village, Deqing Economic Development Zone, Zhejiang Province Patentee after: Zhejiang Tongna Precision Material Technology Co.,Ltd. Address before: Zone A, Floor 1, Building 1, No. 15 Street, Economic and Technological Development Zone, Hangzhou City, Zhejiang Province, 310000 Patentee before: HANGZHOU TONGNA HARDWARE MANUFACTURING Co.,Ltd. |