CN101865198A - Fixing device - Google Patents
Fixing device Download PDFInfo
- Publication number
- CN101865198A CN101865198A CN200910135502A CN200910135502A CN101865198A CN 101865198 A CN101865198 A CN 101865198A CN 200910135502 A CN200910135502 A CN 200910135502A CN 200910135502 A CN200910135502 A CN 200910135502A CN 101865198 A CN101865198 A CN 101865198A
- Authority
- CN
- China
- Prior art keywords
- spring
- lock member
- fixing device
- head end
- butt muff
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 6
- 125000003003 spiro group Chemical group 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 238000002788 crimping Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 239000006071 cream Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000012797 qualification Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 11
- 238000000465 moulding Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 206010058109 Hangnail Diseases 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 206010006514 bruxism Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Images
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
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
- F16B5/0208—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread using panel fasteners, i.e. permanent attachments allowing for quick assembly
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
Abstract
The invention relates to a fixing device which comprises a butt sleeve, a locking element, an outer sleeve pipe and a spring, wherein the locking element extends downwards from the bottom surface of a rotating head end to form a rod body with a threaded part, and at least more than one interference part is arranged between the rod body and the rotating head end, so that a combining part at the front edge of the butt sleeve is welded in a joint hole in a first plate to form a whole; and a continuous bending deformation part between sheathing parts at both sides of the spring is aligned with and sheathed with the interference part of the locking element to form clamped and preset type positioning which can facilitate an automated machine to remove the outer sleeve pipe of the locking element for subsequent compression joint assembly with the butt sleeve, the spring can not easily jump aside and go out of the locking element due to vibration in the transport process, the working time spent in a mode that the spring needs to be previously arranged in the butt sleeve before a secondary assembly procedure is shortened, and the difficulty in the assembly and the alignment is lowered. Thereby, the fixing device achieves the purposes of facilitating the part removal mass production, improving the qualification rate and lowering the production cost.
Description
Technical field
The present invention relates to a kind of fixing device, You Zhike carries for automated machine and carries out making in the assembling process spring to be difficult for vibrations and tripping, deviate from the outer fixing device of lock member, and has and be convenient to volume production and improve quality bills of materials and up-to-standard rate, the effectiveness person that reduces production costs.
Background technique
General panel (plate is to plate) is when making up, for utilization possesses knob is arranged, the set screw of the collar and screw gives interlocking, it is that screw, the collar are fixed on first panel, and turn makes screw lock second panel to form and to preset the location at knob, after utilizing hand tools with screw lock again, then make first panel be one, and can apply to use on the sheet material that machine tool or other plates connect plate for being fixed into the second panel interlocking.
Moreover, just having the dealer to develop this kind is by cap bag, the fixing device that screw part and positioning seat are formed, be after first positioning seat button with fixing device is consolidated in the perforation of sheet material, it is fixing to utilize the screw part interlocking to form on another sheet material again, and when the user unloads sheet material, fixing device still can be fixed in the perforation of sheet material by positioning seat can not cause loss because of user's carelessness, but because of the cap bag of existing fixing device is made by metal material, and after screw part is housed in the containing space of cap bag inside, also need to be undertaken just can giving buckle on screw part after the pressing cap bag produces the buckle salient point by the buckle salient point by machining machine and tool, make outside the assembling relative raising in man-hour that its integral body expends with cost, and also must be quite accurate when assembling cooperates, otherwise be easy to generate excessive extrusion-deformation, therefore just there is the dealer directly to utilize plastic cement to coat and penetrates the one-body molded cap bag that has in the screw part outside, make its cap bag have multiple variation in moulding, color etc., and remove the spent assembling time cost of secondary operations work procedure, spring housing being connected to after the screw part to assemble with positioning seat becomes fixing device and uses again.
In addition, fixing device and sheet material are assembled mode, be to utilize automated machine to get positioning seat earlier, making its front end is to align in the perforation that is embedded on the sheet material, to position seat and the sheet material perforation back welding process of tin cream on every side, then got spring by automated machine in regular turn and inserted in positioning seat inside, and the cap bag of screw part outside place moulding is crimped on after the positioning seat outer rim forms block and locate for aligning, just can be by the spring institute tool elastic restoring force that is socketed on the screw part, make its screw part be positioned at positioning seat inside and do the activity displacement, though fade because of overheated when this kind mode can prevent its plastic cement cap bag by the reflow stove, outside softening, make spring can not produce the high-temperature tempering phenomenon simultaneously, to guarantee to keep good structural strength after permanent the use, only spring insert positioning seat when inner for utilizing automated machine to do pickup, except needs being carried out secondary assembling procedure, and when screw part penetrates spring and carries out socket, also must remain on same center line and cause difficulty in the assembling; If change directly earlier temporarily to be socketed on the screw part spring, utilizing automated machine pickup mode to get cap bag again carries out aligning the crimping assembling with positioning seat, though can avoid the assembling of spring secondary, the trouble of contraposition program and inconvenience, but the circle of general spring directly is than the external diameter greater than the screw part shaft, only can only depend merely on and the screw part surface between a small amount of contact friction masterpiece location that forms, so that in the automated machine course of conveying very easily because of being shaken tripping, deviate from outside the screw part, cause the disqualification rate increase and the quality keyholed back plate of fixing device product to be difficult for, the raising of cost of production.
Therefore, how effectively to solve above-mentioned existing disappearance, be the direction place of being engaged in this journey improvement that the dealer desires most ardently with not enough.
Summary of the invention
At the deficiencies in the prior art, the objective of the invention is to: a kind of fixing device is provided, the solution prior art exists, in the automated machine course of conveying,, cause the disqualification rate of fixing device product to increase and the quality keyholed back plate is difficult for, the problem of the raising of cost of production very easily because of being shaken tripping, deviating from outside the screw part.
For achieving the above object, the technical solution used in the present invention is:
A kind of fixing device, You Zhike is for spring is difficult for because of being shaken tripping, deviating from the outer fixing device of lock member, it is characterized in that: it comprises that butt muff, lock member, outer sleeve and spring form, wherein:
Described butt muff is formed with the fit space in hollow tube inside, and internal face place, fit space is provided with resisting part, and the butt muff leading edge is formed with the connecting part that can combine the location with conjugate foramen on the outside manufacture institute tool first plate surface, and then is formed with the ring protuberance outwardly at the opposite side trailing edge away from the connecting part;
Described lock member is extended with the shaft of tool spiro union portion downwards in turn head end bottom surface, and spiro union portion penetrates activity displacement in the fit space, and is provided with at least more than one interference part between shaft and turn head end;
Described outer sleeve is formed with the containing space that can supply to accommodate butt muff, lock member and spring in hollow tube inside, and containing space front openings place is formed with the annular resisting part that can align crimping with the ring protuberance and form the block location;
Described spring is positioned between butt muff and lock member, and the spring both sides form respectively and can support with resisting part, turn head end and present the belled part of resiliently deformable displacement, and be bent with variant part continuously between two belled parts, and be socketed on variant part and preset the location on the interference part.
Compared with prior art, the beneficial effect that the present invention has is: lock member is provided with at least more than one interference part between shaft and turn head end, and can with between spring two side belled parts continuously the variant part of bending form blocking for the interference part with lock member institute tool aligns socket, preset the location, carry out follow-up crimping assembling with outer sleeve and the butt muff that makes things convenient for automated machine pickup mode to get the emitted moulding in lock member outside, spring is difficult in course of conveying because of being shaken tripping, deviate from outside the lock member, also can effectively reduce its spring and utilize automated machine to insert in advance to carry out again degree of difficulty in secondary assembling procedure mode spent man-hour and the assembling contraposition, and then can reach and make things convenient for the pickup volume production and improve quality bills of materials and up-to-standard rate in butt muff inside, the effectiveness that reduces production costs.
Description of drawings
Fig. 1 is a stereo appearance figure of the present invention;
Fig. 2 is a three-dimensional exploded view of the present invention;
Fig. 3 is the side cutaway view before the present invention assembles;
Fig. 4 is the side cutaway view () of the present invention when assembling;
Fig. 5 is the side cutaway view (two) of the present invention when assembling;
Fig. 6 is the side cutaway view after the present invention assembles.
Description of reference numerals: 1-butt muff; 10-fit space; The 121-face of weld; The 11-resisting part; 13-encircles protuberance; The 12-connecting part; The 2-lock member; 21-turn head end; The 23-spiro union portion; The 211-engaging piece; The 231-outside thread; The 22-shaft; The 24-inner groovy; The 221-interference part; The 3-outer sleeve; The 30-containing space; The 321-guide ramp; The 31-clamping slot; The 33-profile groove; 32-annular resisting part; 34-turn portion; The 4-spring; The 41-belled part; The 42-variant part; 5-first plate; The 51-conjugate foramen; The 52-tin cream; 6-second plate; The 61-lockhole.
Embodiment
For reaching above-mentioned purpose and effect, the technology used in the present invention means and structure thereof, drawing now illustrates in detail that with regard to preferred embodiment of the present invention its feature and function are as follows, are beneficial to understand fully.
See also Fig. 1, Fig. 2, shown in Figure 3, it is the side cutaway view before stereo appearance figure of the present invention, three-dimensional exploded view and the assembling, find out by knowing among the figure, the present invention is formed by including butt muff 1, lock member 2, outer sleeve 3 and spring 4, so with regard to this case main member and feature describe in detail as after, wherein:
Described butt muff 1 is a hollow tube, its hollow inside is formed with fit space 10, and in the fit space 10 internal face places are provided with the less resisting part of internal diameter 11, and butt muff 1 leading edge is formed with the less connecting part of external diameter 12, and is formed with ring protuberance 13 outwardly away from the opposite side trailing edge of connecting part 12.
Described lock member 2 has turn head end 21, and is formed with engaging piece 211 on turn head end 21 outer ring surfaces, and the bottom surface is extended with the shaft 22 of tool spiro union portion 23 downwards, and 21 of shaft 22 and turn head ends are provided with at least more than one interference part 221; Moreover lock member 2 is formed with outside thread 231 on spiro union portion 23 outer ring surfaces, and then is provided with the inner groovy 24 that can be various types (as a word, cross, rice word or inner hexagonal hole etc.) away from spiro union portion 23 opposite side turn head ends 21 end face places.
Described outer sleeve 3 is a hollow tube, its hollow inside is formed with can be for the containing space 30 of accommodating butt muff 1, lock member 2 and spring 4, and containing space 30 internal faces are provided with the clamping slot 31 (as shown in Figure 4) that can be a mutual engagement shape with turn head end 21 engaging pieces 211, and be positioned at clamping slot 31 front openings places and inwards be formed with at least more than one annular resisting part 32, and after annular resisting part 32 outer rims are formed with guide ramp 321, vertically offer profile groove 33 by 32 of two adjacent annular resisting parts again; In addition, outer sleeve 3 then is formed with turn portion 34 on outer ring surface.
Described spring 4 is for being positioned at 2 of butt muff 1 and lock members, and spring 4 both sides are formed with the belled part 41 that can support the location with resisting part 11, turn head end 21 and present the resiliently deformable displacement respectively, and be bent with the variant part 42 of ring-type continuously 41 of two belled parts, preset the location with variant part 42 for being socketed on the interference part 221 again.
Above-mentioned lock member 2 is made by metal material, and utilize plastic cement to coat that ejection formation (Over Molding) processing mode is one-body molded an outer sleeve 3 in turn head end 21 outsides of lock member 2, and make lock member 2 for after being combined into one with outer sleeve 3, can be engaged in location on the clamping slot 31 alternately by engaging piece 211 (as shapes such as hangnail, grinding tooth or tapers), and assist the quick turn of user conveniently to carry out the interlocking action at lock member 2 by the turn portion on outer sleeve 3 outer ring surfaces 34.
Please consult Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6 simultaneously, it is the side cutaway view after side cutaway view, the side cutaway view () when assembling, the side cutaway view (two) when assembling and the assembling before three-dimensional exploded view of the present invention, the assembling, find out by knowing among the figure, above-mentioned member is in when assembling, is externally first plate 5 of product institute tool on corresponding conjugate foramen 51 in to form firm in conjunction with location for packing the connecting part 12 of butt muff 1 leading edge earlier; But the preferable possible embodiments of the present invention is in automated machine pickup mode butt muff 1 have been got, make butt muff 1 move the back simultaneously to after just in first plate, 5 lip-deep conjugate foramens 51, its smooth face of weld 121 in 12 outsides, connecting part is promptly brushed on tin cream 52 surfaces of covering on every side to being attached to conjugate foramen 51, carry out follow-up back welding process again, or, then make in the firm firm conjugate foramen 51 that is welded on first plate 5 in the connecting part 12 of butt muff 1 to be combined into one via after zinc-plated.
Then just the variant part 42 of 4 tools of spring can be socketed on the interference part 221 of 21 of lock member 2 shafts 22 and turn head ends and do the temporary location of presetting, simultaneously can prevent that spring 4 from being shaken and tripping in the automated machine course of conveying, deviate from outside the lock member 2, penetrate in the fit space 10 of butt muff 1 for aligning with the terminal spiro union portion of the lock member 2 that is exposed to outer sleeve 3 openings 23 again, at this moment, the belled part 41 of spring 4 both sides promptly respectively with the resisting part 11 at butt muff 1 internal face place, turn head end 21 bottom surfaces of lock member 2 support the location and present the resiliently deformable displacement state, and the annular resisting part 32 that makes outer sleeve 3 front openings place tools for butt muff 1 trailing edge on ring protuberance 13 align crimping and form the block location, and in outer sleeve 3 crimping processes, the guide ramp 321 of 3 tool annulars of outer sleeve resisting part, 32 outer rims just can be oppressed earlier on ring protuberance 13 surfaces, provide its resiliently deformable displacement by 32 profile grooves of being offered 33 of two adjacent annular resisting parts simultaneously, and after waiting to encircle protuberance 13 and being forced in the annular resisting part 32 smoothly along guide ramp 321, so, the activity displacement is done in the fit space 10 that just can rely on the elastic reset power of spring 4 make spiro union portion 23 on lock member 2 ends be positioned at butt muff 1, then can align ring protuberance 13 outsides that are crimped on the butt muff 1 for the annular resisting part 32 of 3 tools of outer sleeve and form certain block location.
When the present invention in use, be earlier with first plate 5 for covering on second plate 6, make 2 pairs of lock members just at the lockhole 61 of 6 tools of second plate simultaneously, then just can push fast by manual mode, the turn portion 34 of rotation on outer sleeve 3, and interlock lock member 2 the outside thread 231 of spiro union portion 23 for do in advance the contraposition interlocking in lockhole 61 after, butt up against the inner groovy 24 lock commentaries on classics fast at lock member 2 turn head ends 21 end face places again with hand tools (as bottle opener), and apply and suitably reverse strength and closely lock, reach with this first plate 5 and second plate 6 are presented firmly, firm assembling locating effect.
Moreover, the above only is preferred embodiment of the present invention, non-so limit to claim of the present invention, lock member 2 of the present invention cooperates the ring-type variant part 42 on the spring 4 also to can be the buckle salient point in 21 set interference parts 221 of shaft 22 and turn head end, patterns such as backstop ring body or engage threads, it only need provide interference part 221 to get final product for formation blocking after aligning socket with variant part 42, spring 4 temporary presetting are positioned on the lock member 2, carry out the follow-up crimping assembly program that aligns and can conveniently utilize automated machine pickup mode to get outer sleeve 3 with butt muff 1, and be difficult in the course of conveying because of being shaken tripping, emerge in outside the lock member 2, this kind mode also can effectively be reduced spring 4 and be utilized automated machine to insert in advance to carry out in butt muff 1 inside degree of difficulty in secondary assembling procedure spent man-hour and the assembling contraposition again, and then can reach and make things convenient for the pickup volume production, processing procedure is simplified, and improves quality bills of materials and up-to-standard rate and the effectiveness that reduces production costs.
More than explanation is just illustrative for the purpose of the present invention; and nonrestrictive, those of ordinary skills understand, under the situation of the spirit and scope that do not break away from claim and limited; can make many modifications, variation or equivalence, but all will fall within protection scope of the present invention.
Claims (6)
1. fixing device, You Zhike is for spring is difficult for because of being shaken tripping, deviating from the outer fixing device of lock member, it is characterized in that: it comprises that butt muff, lock member, outer sleeve and spring form, wherein:
Described butt muff is formed with the fit space in hollow tube inside, and internal face place, fit space is provided with resisting part, and the butt muff leading edge is formed with the connecting part that can combine the location with conjugate foramen on the outside manufacture institute tool first plate surface, and then is formed with the ring protuberance outwardly at the opposite side trailing edge away from the connecting part;
Described lock member is extended with the shaft of tool spiro union portion downwards in turn head end bottom surface, and spiro union portion penetrates activity displacement in the fit space, and is provided with at least more than one interference part between shaft and turn head end;
Described outer sleeve is formed with the containing space that can supply to accommodate butt muff, lock member and spring in hollow tube inside, and containing space front openings place is formed with the annular resisting part that can align crimping with the ring protuberance and form the block location;
Described spring is positioned between butt muff and lock member, and the spring both sides form respectively and can support with resisting part, turn head end and present the belled part of resiliently deformable displacement, and be bent with variant part continuously between two belled parts, and be socketed on variant part and preset the location on the interference part.
2. fixing device according to claim 1, it is characterized in that: the outside, the connecting part of described butt muff is formed with to support and is attached to the smooth face of weld that carries out back welding process around the first plate conjugate foramen on the tin cream surface, and can for the connecting part of butt muff institute tool for first plate on the eyelet welding that engages establish and be combined into one, again by the lockhole of lock member interlocking on second plate, and make first plate for fixedly to become one with the second plate interlocking.
3. fixing device according to claim 1, it is characterized in that: the interference part of described lock member cooperates the ring-type variant part on the spring to can be patterns such as buckle salient point, backstop ring body or engage threads, and the interference part is for aligning the location of presetting that forms blocking after the socket with variant part.
4. fixing device according to claim 1 is characterized in that: be formed with outside thread on the spiro union portion outer ring surface of described lock member, and be provided with and can lock the inner groovy that changes for the hand tools butt joint away from the turn head end end face place of spiro union portion opposite side.
5. fixing device according to claim 1, it is characterized in that: described outer sleeve is formed with guide ramp in annular resisting part outer rim, and by then vertically offering profile groove between two adjacent annular resisting parts, and profile groove can be for annular resisting part be a resiliently deformable displacement during with the ring protuberance of guide ramp compressing on butt muff.
6. fixing device according to claim 1 is characterized in that: described outer sleeve is provided with clamping slot at the containing space internal face, and clamping slot for the turn head end outer ring surface of lock member on the engaging piece that forms be a mutual engagement shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910135502A CN101865198A (en) | 2009-04-17 | 2009-04-17 | Fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910135502A CN101865198A (en) | 2009-04-17 | 2009-04-17 | Fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101865198A true CN101865198A (en) | 2010-10-20 |
Family
ID=42957062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910135502A Pending CN101865198A (en) | 2009-04-17 | 2009-04-17 | Fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101865198A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104421260A (en) * | 2013-08-23 | 2015-03-18 | 恒昌行精密工业有限公司 | Fixing device |
| CN109869385A (en) * | 2019-03-29 | 2019-06-11 | 衡阳泰豪通信车辆有限公司 | A kind of fast locking device of double thread |
| CN112065838A (en) * | 2019-06-11 | 2020-12-11 | 天津华能北方热力设备有限公司 | Spring combination locking connecting piece |
| WO2021207652A1 (en) * | 2020-04-09 | 2021-10-14 | Southco, Inc. | Captive fastener and method of assembling the same |
| CN116006854A (en) * | 2023-03-27 | 2023-04-25 | 山东省自然资源资料档案馆(山东省地质博物馆) | Surveying and mapping device for geological exploration |
-
2009
- 2009-04-17 CN CN200910135502A patent/CN101865198A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104421260A (en) * | 2013-08-23 | 2015-03-18 | 恒昌行精密工业有限公司 | Fixing device |
| CN109869385A (en) * | 2019-03-29 | 2019-06-11 | 衡阳泰豪通信车辆有限公司 | A kind of fast locking device of double thread |
| CN112065838A (en) * | 2019-06-11 | 2020-12-11 | 天津华能北方热力设备有限公司 | Spring combination locking connecting piece |
| WO2021207652A1 (en) * | 2020-04-09 | 2021-10-14 | Southco, Inc. | Captive fastener and method of assembling the same |
| CN116006854A (en) * | 2023-03-27 | 2023-04-25 | 山东省自然资源资料档案馆(山东省地质博物馆) | Surveying and mapping device for geological exploration |
| CN116006854B (en) * | 2023-03-27 | 2023-05-26 | 山东省自然资源资料档案馆(山东省地质博物馆) | Surveying and mapping device for geological exploration |
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| PB01 | Publication | ||
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Application publication date: 20101020 |