CN206522329U - Screw - Google Patents

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Publication number
CN206522329U
CN206522329U CN201720196452.0U CN201720196452U CN206522329U CN 206522329 U CN206522329 U CN 206522329U CN 201720196452 U CN201720196452 U CN 201720196452U CN 206522329 U CN206522329 U CN 206522329U
Authority
CN
China
Prior art keywords
rod
screw
annular groove
telescopic component
tubulose
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.)
Expired - Fee Related
Application number
CN201720196452.0U
Other languages
Chinese (zh)
Inventor
董军青
耿录伟
郭殿梁
李登刚
解鹏飞
刘佩佩
耿盼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin Harmony Technology Development Co Ltd
Original Assignee
Tianjin Harmony Technology Development Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tianjin Harmony Technology Development Co Ltd filed Critical Tianjin Harmony Technology Development Co Ltd
Priority to CN201720196452.0U priority Critical patent/CN206522329U/en
Application granted granted Critical
Publication of CN206522329U publication Critical patent/CN206522329U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a kind of screw, is related to technical field of fastening, and the screw includes screw rod, and screw rod includes first body of rod and second body of rod;Second body of rod is made up of stainless steel material, and first body of rod is fabricated from iron;External screw thread is provided with first body of rod;One end of first body of rod is provided with guide surface and annular groove;Guide surface and the diameter parallel of first body of rod, and connected with annular groove;One end of second body of rod is to be installed with a baffle plate on the end face of one end of tubulose on tubulose, second body of rod;One end of tubulose is provided with telescopic component, the side wall of annular groove and offers the jack matched with telescopic component on second body of rod;It is welded and fixed between first body of rod and second body of rod;The one end of second body of rod away from first body of rod and nut are affixed.The screw alleviates the technical problem that exposed aerial part gets rusty easily.

Description

Screw
Technical field
The utility model is related to technical field of fastening, more particularly, to a kind of screw.
Background technology
Screw is a kind of fastener, in field extensive uses such as machinery, electrical equipment and buildings, wherein, it is most widely used Surely belong to irony screw.However, irony screw is while being used widely, and its shortcoming --- easily get rusty, be also evident from, The usual exposed aerial part of screw, it is easier to get rusty.
It would therefore be highly desirable to a kind of new screw be designed, to improve above mentioned problem.
Utility model content
The purpose of this utility model is to provide a kind of screw, exposed in air to alleviate screw present in prior art In the technical problem that gets rusty easily of part.
The screw that the utility model is provided includes screw rod, and the screw rod includes first body of rod and second body of rod;Described second The body of rod is made up of stainless steel material, and first body of rod is fabricated from iron;External screw thread is provided with first body of rod;
One end of first body of rod is provided with guide surface and annular groove;The guide surface and first body of rod Diameter parallel, and connected with the annular groove;
One end of second body of rod is to be installed with a gear on the end face of one end of tubulose on tubulose, second body of rod Plate;The baffle plate can be slid into the annular groove along the guide surface, and can be rotated in the annular groove;
One end of tubulose is provided with telescopic component, the side wall of the annular groove and offered and institute on second body of rod The jack of telescopic component matching is stated, the telescopic component is inserted in the jack after being rotated with second body of rod;
Welded between first body of rod and second body of rod;The one end of second body of rod away from first body of rod It is affixed with nut.
Further, the guide surface and the periphery of the annular groove on first body of rod are tangent.
Further, the first mounting hole is provided with the baffle plate, the telescopic component is arranged at first mounting hole It is interior;
The telescopic component includes fore-set and elastic component, and one end of the elastic component and the fore-set be affixed, the other end and The bottom of first mounting hole is affixed.
Further, the second mounting hole, described flexible group are provided with second body of rod on the end face of one end of tubulose Part is arranged in second mounting hole;
The telescopic component includes fore-set and elastic component, and one end of the elastic component and the fore-set be affixed, the other end and The bottom of second mounting hole is affixed.
Further, the one end of the nut away from the screw rod is provided with a square groove;The bottom of the square groove First " ten " word groove is provided with face.
Further, in the square groove there be on nut auxiliary block, the outer surface of the nut auxiliary block Matching installation It is provided with second " ten " word groove.
Further, the nut and the nut auxiliary block are made by stainless steel material.
Further, it is provided with external screw thread on second body of rod.
Further, in addition to reinforcer, the reinforcer is placed on the company of first body of rod and second body of rod admittedly Meet place.
Screw the having the beneficial effect that compared with prior art that the utility model is provided:
In screw described in the utility model, baffle wedge defines first body of rod and second body of rod in annular groove Relative axial position, define in telescopic component insertion jack the circumferential relative position of first body of rod and second body of rod further through Welding between first body of rod and second body of rod, further enhances the connection between first body of rod and second body of rod.Pass through three Weight position restriction, has locked the relative position of first body of rod and second body of rod, makes position relationship therebetween firm, reliable. During using the screw, exposed aerial part is second body of rod, and second body of rod by it is corrosion-resistant, be difficult the stainless steel that gets rusty Material is made, so while irony screw performance is ensured, alleviating what the exposed aerial part of screw got rusty easily Technical problem.
Another screw that the utility model is provided includes screw rod, and the screw rod includes first body of rod and second body of rod;Institute State second body of rod to be made up of stainless steel material, first body of rod is fabricated from iron;External screw thread is provided with first body of rod, and Its free end is provided with cutting edge;
One end of first body of rod is provided with guide surface and annular groove;The guide surface and first body of rod Diameter parallel, and connected with the annular groove;
One end of second body of rod is to be installed with a gear on the end face of one end of tubulose on tubulose, second body of rod Plate;The baffle plate can be slid into the annular groove along the guide surface, and can be rotated in the annular groove;
One end of tubulose is provided with telescopic component, the side wall of the annular groove and offered and institute on second body of rod The jack of telescopic component matching is stated, the telescopic component is inserted in the jack after being rotated with second body of rod;
It is welded and fixed between first body of rod and second body of rod;Second body of rod is away from first body of rod One end is affixed with nut.
Second of screw that the utility model is provided is not only able to realize the beneficial effect that foregoing screw reaches, due to second The end of the body of rod is provided with cutting edge, also enables the screw directly drilling, tapping, locking in connecting material, can save Engineering time.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, describe below In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the front view for the screw that the utility model embodiment one is provided;
Fig. 2 is the enlarged drawing at the screw A shown in Fig. 1;
Fig. 3 is the top view for the screw that the utility model embodiment one is provided;
Fig. 4 is the partial enlarged drawing of first body of rod of the screw that the utility model embodiment one is provided;
Fig. 5 is the stereogram of second body of rod of the screw that the utility model embodiment one is provided;
Fig. 6 is the front view for the screw that the utility model embodiment two is provided.
Icon:1- screw rods;2- nuts;3- nut auxiliary blocks;4- cutting edges;The bodies of rod of 11- first;The bars of 12- second Body;31- second " ten " word groove;111- guide surfaces;112- annular grooves;113- jacks;121- baffle plates;122- stretches Component;1221- fore-sets;1222- elastic components.
Embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described Embodiment is a part of embodiment of the utility model, rather than whole embodiments.Based on the embodiment in the utility model, sheet The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality Novel protected scope.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular Directly ", the orientation or position relationship of the instruction such as " level ", " interior ", " outer " are, based on orientation shown in the drawings or position relationship, to be only Described for the ease of description the utility model and simplifying, rather than to indicate or imply that signified device or element must have specific Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying relative importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly Connection;Can be mechanical connection or electrical connection;Can be joined directly together, can also be indirectly connected to by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Concrete meaning of the language in the utility model.
Embodiment one
As shown in figure 1, the screw that the present embodiment is provided includes screw rod 1, screw rod 1 includes first body of rod 11 and second body of rod 12;Second body of rod 12 is made up of stainless steel material, and first body of rod 11 is fabricated from iron;External screw thread is provided with first body of rod 11;The One end of one body of rod 11 is provided with guide surface 111 and annular groove 112;The axis of the body of rod 11 of guide surface 111 and first is put down OK, and with annular groove 112 connect, as shown in Figure 4;One end of second body of rod 12 is one of tubulose on tubulose, second body of rod 12 A baffle plate 121 is installed with the end face at end, as shown in Figure 5;Baffle plate 121 can slide into annular groove 112 along guide surface 111 In, and can be rotated in annular groove 112;One end of tubulose is provided with telescopic component 122, annular groove on second body of rod 12 The jack 113 matched with telescopic component 122 is offered on 112 side wall, telescopic component 122 is inserted after being rotated with second body of rod 12 In jack 113;Welded between first body of rod 11 and second body of rod 12;Second body of rod 12 one end and nut away from first body of rod 11 2 is affixed.
When manufacturing the screw, first assembled, the guide surface by tubulose one end of second body of rod 12 along first body of rod 11 111 are inserted in.The baffle plate 121 of the end face of second body of rod 12 is inserted in the annular groove 112 of first body of rod 11, rotates second body of rod 12, baffle plate 121 is rotated in annular groove 112, so as to realize the axially position of first body of rod 11 and second body of rod 12.When When telescopic component 122 on two bodys inserts the jack 113 on the side wall of first body of rod, 11 annular groove 112, first body of rod 11 with The circumferential relative position of second body of rod 12 is fixed, and the relative position of first body of rod 11 and second body of rod 12 is locked, screw It is completed.First body of rod 11 is welded with one end that second body of rod 12 is contacted after being completed, first is further fixed The relative position of the body of rod 12 of the body of rod 11 and second, completes the manufacture of screw.
Baffle plate 121 is stuck in annular groove 112, define first body of rod 11 and second body of rod 12 relative axial position, Telescopic component 122 inserts the circumferential relative position that first body of rod 11 and second body of rod 12 are defined in jack 113 further through first Welding between the body of rod 12 of the body of rod 11 and second, further enhances the connection between first body of rod 11 and second body of rod 12.It is logical Cross triple limits, locked the relative position of first body of rod 11 and second body of rod 12, make position relationship therebetween firmly, can Lean on.During using the screw, exposed aerial part be second body of rod 12, and second body of rod 12 by it is corrosion-resistant, be difficult to get rusty Stainless steel material be made, so while irony screw performance is ensured, alleviating the exposed aerial part of screw and holding The technical problem easily got rusty.
First body of rod 11 is coaxially disposed with second body of rod 12, and baffle plate 121 can be rotated in annular groove 112, and will not Position outside guide surface 111 is skidded off.Telescopic component 122 and matched slot can be one, two or three It is individual, etc..Welding between first body of rod 11 and second body of rod 12 can be realized by laser welding.
In the present embodiment, guide surface 111 on first body of rod 11 can be tangent with the periphery of annular groove 112.
When the periphery of guide surface 111 and annular groove 112 is tangent, guide surface 111 is inserted in the in second body of rod 12 It during one body of rod 11, can either step down, can be risen again for the motion of relative first body of rod 11 of second body of rod 12 for baffle plate 121 To guide effect.
In the present embodiment, as shown in Fig. 2 being provided with the first mounting hole on baffle plate 121, telescopic component 122 is arranged at first In mounting hole;Telescopic component 122 includes fore-set 1221 and elastic component 1222, and one end of elastic component 1222 and fore-set 1221 are affixed, The bottom of the other end and the first mounting hole is affixed.
Telescopic component 122 is made up of fore-set 1221 and elastic component 1222, elastic component 1222 in the raw when, fore-set 1221 have part to stretch out the first mounting hole.Fore-set 1221 contacts with the annular groove 112 on first body of rod 11 and continues to push away forward When entering second body of rod 12, fore-set 1221 is then pressed completely into the first mounting hole.First body of rod 11 or second body of rod 12 are rotated, is pushed up When jack 113 on post 1221 and the side wall of annular groove 112 is just relative, it is pushed into the presence of elastic force in jack 113, and then Lock the circumferential relative position of first body of rod 11 and second body of rod 12.Elastic component 1222 can be spring.
In the present embodiment, the second mounting hole can be provided with the end face of one end of tubulose on second body of rod 12, group of stretching Part 122 is arranged in the second mounting hole;Telescopic component 122 includes fore-set 1221 and elastic component 1222, one end of elastic component 1222 Affixed with fore-set 1221, the bottom of the other end and the second mounting hole is affixed.
The situation that second mounting hole is arranged on second body of rod 12 on the end face of one end of tubulose is set with the second mounting hole It is similar in the situation on baffle plate 121, therefore herein not in repeat specification.
In the present embodiment, the one end of nut 2 away from screw rod 1 is provided with a square groove;Set on the bottom surface of square groove There is first " ten " word groove (not shown).
First " ten " word groove on square groove bottom surface, inserts for the head for " ten " word screwdriver, enables screw Twisted by " ten " word screwdriver.
The one end of nut 2 away from screw rod 1 can also be to offer first on plane or cambered surface, the nut 2 of plane or cambered surface " ten " word groove.First " ten " word groove in the groove floor of nut 2 can also be replaced with straight slot.
In the present embodiment, as shown in figure 3, there being outside nut auxiliary block 3, nut auxiliary block 3 Matching installation in square groove Second " ten " word groove 31 is provided with surface.
Because the power that single is twisted after screwdriver first " ten " word groove of insertion is excessive or screwdriver is tightened, unscrews nut 2 Excessively frequently, the situation that first " ten " word groove on nut 2 is deformed, failed often occurs.First in the groove of nut 2 After the groove deformation failure of " ten " word, nut auxiliary block 3 is embedded in the groove on nut 2, there is second " ten " word in nut auxiliary block 3 Upward, second " ten " word groove 31 in nut auxiliary block 3 can then replace first " ten " word in the groove of nut 2 for one end of groove 31 Groove coordinates with screwdriver.In addition, the shape of cross section of nut auxiliary block 3 and the groove of nut 2 is square, nut can be prevented auxiliary Block 3 is helped to be relatively rotated with nut 2.
Second " ten " word groove 31 in nut auxiliary block 3 can also be replaced with straight slot.The cross section of nut auxiliary block 3 Can also be other other polygons.
In the present embodiment, nut 2 and nut auxiliary block 3 can be made up of stainless steel material.
Nut 2 and nut auxiliary block 3 are made by stainless steel material, and the exposed aerial part of screw is corrosion resistant The stainless steel material lose, being difficult to get rusty is made, and can further alleviate the skill that the exposed aerial part of screw gets rusty easily Art problem.
Can be provided with external screw thread on second body of rod 12 in the present embodiment.
External screw thread on second body of rod 12 is used for screw and is connected, locks with the external world.Second body of rod 12 can also be surface light Sliding round bar.
In the present embodiment, screw can also include reinforcer, and reinforcer is placed on first body of rod 11 and second body of rod admittedly 12 junction.
By setting reinforcer in the junction of first body of rod 11 and second body of rod 12, the intensity of screw can be increased.
Embodiment two
As shown in fig. 6, the screw that the present embodiment is provided includes screw rod 1, screw rod 1 includes first body of rod 11 and second body of rod 12;Second body of rod 12 is made up of stainless steel material, and first body of rod 11 is fabricated from iron;External screw thread is provided with first body of rod 11, and Its free end is provided with cutting edge 4;One end of first body of rod 11 is provided with guide surface 111 and annular groove 112;Guide surface 111 and first the body of rod 11 diameter parallel, and connected with annular groove 112;One end of second body of rod 12 is tubulose, second body of rod A baffle plate 121 is installed with 12 on the end face of one end of tubulose;Baffle plate 121 can slide into annular groove along guide surface 111 In 112, and it can be rotated in annular groove 112;One end of tubulose is provided with telescopic component 122 on second body of rod 12, annular The jack 113 matched with telescopic component 122 is offered on the side wall of groove 112, after telescopic component 122 is rotated with second body of rod 12 Insert in jack 113;It is welded and fixed between first body of rod 11 and second body of rod 12;Second body of rod 12 away from first body of rod 11 one End is affixed with nut 2.
When manufacturing the screw, first assembled, the guide surface by tubulose one end of second body of rod 12 along first body of rod 11 111 are inserted in.The baffle plate 121 of the end face of second body of rod 12 is inserted in the annular groove 112 of first body of rod 11, rotates second body of rod 12, baffle plate 121 is rotated in annular groove 112, so as to realize the axially position of first body of rod 11 and second body of rod 12.When When telescopic component 122 on two bodys inserts the jack 113 on the side wall of first body of rod, 11 annular groove 112, first body of rod 11 with The circumferential relative position of second body of rod 12 is fixed, and the relative position of first body of rod 11 and second body of rod 12 is locked, screw It is completed.First body of rod 11 is welded with one end that second body of rod 12 is contacted after being completed, first is further fixed The relative position of the body of rod 12 of the body of rod 11 and second, completes the manufacture of screw.
Baffle plate 121 is stuck in annular groove 112, define first body of rod 11 and second body of rod 12 relative axial position, Telescopic component 122 inserts the circumferential relative position that first body of rod 11 and second body of rod 12 are defined in jack 113 further through first Welding between the body of rod 12 of the body of rod 11 and second, further enhances the connection between first body of rod 11 and second body of rod 12.It is logical Cross triple limits, locked the relative position of first body of rod 11 and second body of rod 12, make position relationship therebetween firmly, can Lean on.During using the screw, exposed aerial part be second body of rod 12, and second body of rod 12 by it is corrosion-resistant, be difficult to get rusty Stainless steel material be made, so while irony screw performance is ensured, alleviating the exposed aerial part of screw and holding The technical problem easily got rusty.Because the end of second body of rod 12 is provided with cutting edge 4, also enable the screw directly in connection material Drilling, tapping, locking on material, can be saved the engineering time.
Finally it should be noted that:Various embodiments above is only limited to illustrate the technical solution of the utility model, rather than to it System;Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should Understand:It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole Technical characteristic carries out equivalent substitution;And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly The scope of each embodiment technical scheme of type.

Claims (10)

1. a kind of screw, it is characterised in that including screw rod (1), the screw rod (1) includes first body of rod (11) and second body of rod (12);Second body of rod (12) is made up of stainless steel material, and first body of rod (11) is fabricated from iron;First body of rod (11) external screw thread is provided with;
One end of first body of rod (11) is provided with guide surface (111) and annular groove (112);The guide surface (111) with the diameter parallel of first body of rod (11), and connected with the annular groove (112);
One end of second body of rod (12) is to be installed with one on the end face of one end of tubulose on tubulose, second body of rod (12) Baffle plate (121);The baffle plate (121) can slide into the annular groove (112) along the guide surface (111), and energy It is enough to be rotated in the annular groove (112);
One end of tubulose is provided with telescopic component (122), the side wall of the annular groove (112) on second body of rod (12) The jack (113) matched with the telescopic component (122) is offered, the telescopic component (122) is with second body of rod (12) Inserted after rotation in the jack (113);
Welded between first body of rod (11) and second body of rod (12);Second body of rod (12) is away from first bar One end of body (11) and nut (2) are affixed.
2. screw according to claim 1, it is characterised in that guide surface (111) on first body of rod (11) with The periphery of the annular groove (112) is tangent.
3. screw according to claim 1, it is characterised in that be provided with the first mounting hole on the baffle plate (121), described Telescopic component (122) is arranged in first mounting hole;
The telescopic component (122) includes fore-set (1221) and elastic component (1222), one end of the elastic component (1222) and institute State that fore-set (1221) is affixed, the bottom of the other end and first mounting hole is affixed.
4. screw according to claim 1, it is characterised in that on second body of rod (12) on the end face of one end of tubulose The second mounting hole is provided with, the telescopic component (122) is arranged in second mounting hole;
The telescopic component (122) includes fore-set (1221) and elastic component (1222), one end of the elastic component (1222) and institute State that fore-set (1221) is affixed, the bottom of the other end and second mounting hole is affixed.
5. the screw according to claim any one of 1-4, it is characterised in that the nut (2) is away from the screw rod (1) One end be provided with a square groove;First " ten " word groove is provided with the bottom surface of the square groove.
6. screw according to claim 5, it is characterised in that Matching installation has nut auxiliary block in the square groove (3), it is provided with second " ten " word groove (31) on the outer surface of the nut auxiliary block (3).
7. screw according to claim 6, it is characterised in that the nut (2) and the nut auxiliary block (3) be not by Rust Steel material is made.
8. the screw according to claim any one of 1-4, it is characterised in that be provided with second body of rod (12) outer Screw thread.
9. the screw according to claim any one of 1-4, it is characterised in that also including reinforcer, the reinforcer covers admittedly In the junction of first body of rod (11) and second body of rod (12).
10. a kind of screw, it is characterised in that including screw rod (1), the screw rod (1) includes first body of rod (11) and second body of rod (12);Second body of rod (12) is made up of stainless steel material, and first body of rod (11) is fabricated from iron;First body of rod (11) external screw thread is provided with, and its free end is provided with cutting edge (4);
One end of first body of rod (11) is provided with guide surface (111) and annular groove (112);The guide surface (111) with the diameter parallel of first body of rod (11), and connected with the annular groove (112);
One end of second body of rod (12) is to be installed with one on the end face of one end of tubulose on tubulose, second body of rod (12) Baffle plate (121);The baffle plate (121) can slide into the annular groove (112) along the guide surface (111), and energy It is enough to be rotated in the annular groove (112);
One end of tubulose is provided with telescopic component (122), the side wall of the annular groove (112) on second body of rod (12) The jack (113) matched with the telescopic component (122) is offered, the telescopic component (122) is with second body of rod (12) Inserted after rotation in the jack (113);
It is welded and fixed between first body of rod (11) and second body of rod (12);Second body of rod (12) is away from described the One end of one body of rod (11) and nut (2) are affixed.
CN201720196452.0U 2017-03-01 2017-03-01 Screw Expired - Fee Related CN206522329U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720196452.0U CN206522329U (en) 2017-03-01 2017-03-01 Screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720196452.0U CN206522329U (en) 2017-03-01 2017-03-01 Screw

Publications (1)

Publication Number Publication Date
CN206522329U true CN206522329U (en) 2017-09-26

Family

ID=59892595

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720196452.0U Expired - Fee Related CN206522329U (en) 2017-03-01 2017-03-01 Screw

Country Status (1)

Country Link
CN (1) CN206522329U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106763075A (en) * 2017-03-01 2017-05-31 天津义之和科技发展有限公司 Screw

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106763075A (en) * 2017-03-01 2017-05-31 天津义之和科技发展有限公司 Screw
CN106763075B (en) * 2017-03-01 2019-02-26 天津义之和科技发展有限公司 Screw

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170926

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CF01 Termination of patent right due to non-payment of annual fee