CN114738367B - Be used for accurate fastener anticreep structure of server equipment - Google Patents
Be used for accurate fastener anticreep structure of server equipment Download PDFInfo
- Publication number
- CN114738367B CN114738367B CN202210391322.8A CN202210391322A CN114738367B CN 114738367 B CN114738367 B CN 114738367B CN 202210391322 A CN202210391322 A CN 202210391322A CN 114738367 B CN114738367 B CN 114738367B
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- Prior art keywords
- fixed
- threaded rod
- disc
- wall
- stopper
- Prior art date
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- 244000309464 bull Species 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 5
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 238000010030 laminating Methods 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- 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
- F16B39/24—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a precision fastener anti-drop structure for server equipment, and relates to the technical field of servers. The device comprises a threaded rod, wherein the thread of the threaded rod is in threaded connection with a thread groove, and the thread groove is formed in an installation block. This a precision fastener anticreep structure for server equipment when screwing in the screw thread groove with the bolt, makes the second through-hole cover on the guide bar, when the threaded rod drives the disc and moves down, and then can make slotted hole department extrude the inclined plane of stopper, and then can make the disc extrude the stopper to move in the sleeve, make spring compression, when the top subsides of disc and mounting panel, and then make the disc remove the bottom of stopper, through the effect of spring, and then make the bottom of stopper and the top laminating of disc, make the stopper spacing to the disc, and then play the effect of spacing threaded rod, can prevent that the threaded rod from breaking away from in the screw thread groove, influence the fixed effect of server subassembly.
Description
Technical Field
The invention relates to the technical field of servers, in particular to an anti-drop structure for a precise fastener of server equipment.
Background
With the development of the chinese electronic technology, more and more electronic devices have been widely used. Servers are an important component in electronic devices, which are devices that provide computing services. Since the server needs to respond to the service request and process it, the server should generally have the ability to afford the service and secure the service. The assembly and disassembly of the server apparatus are performed by means of bolts or the like.
The existing after the server component is installed through the threaded rod, the threaded rod can be loosened and the like when the threaded rod is used for a long time, and the threaded rod can be separated from the threaded groove due to shaking and the like when server equipment is carried or moved, so that the server component is fixed unstably, and the normal use of the later period of a server can be influenced.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides an anti-drop structure for a precision fastener of server equipment, which solves the problems mentioned in the background art.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a be used for accurate fastener anticreep structure of server equipment, includes the threaded rod, the screw thread department and the thread groove threaded connection of threaded rod, the thread groove is seted up in the installation piece, the top of installation piece is fixed with the bottom of mounting panel, first through-hole has been seted up in the mounting panel, it has the threaded rod to run through in the first through-hole, the top of threaded rod is fixed with the turn button, the outer wall of threaded rod is fixed with the fixed block, fixed block slidable mounting is in the spout, the spout is seted up on the disc, set up flutedly in the mounting panel, the inner wall of recess is fixed with fixed cover, the dwang is installed in the inner wall rotation of fixed cover, the top of dwang is fixed with stop gear, be provided with control mechanism in the recess.
Preferably, a second through hole is formed in the disc, a guide rod penetrates through the second through hole, and the guide rod is fixed to the top of the mounting plate.
Preferably, the guide rods are four, two guide rods are one group, and the two groups of guide rods are symmetrically arranged by taking the central line of the mounting plate in the vertical direction as a symmetrical axis.
Preferably, the limiting mechanism comprises a sleeve, the bottom of the sleeve is fixed at the top of the rotating rod, a limiting block is slidably mounted on the inner wall of the sleeve, a spring is fixed on one side, close to the threaded rod, of the limiting block, and one side, far away from the limiting block, of the spring is fixed on the inner wall of the sleeve.
Preferably, the disc is provided with a slot, and a rotating rod penetrates through the slot.
Preferably, the control mechanism comprises a rotating rod, one end of the rotating rod is fixed with a rotating handle, the other end of the rotating rod is fixed with a first conical gear, the first conical gear and a second conical gear are meshed with each other, and the inner wall of the second conical gear is fixed on the outer wall of the rotating rod.
Preferably, the bull stick runs through the supporting shoe, and the bull stick rotates with the department of running through of supporting shoe to be connected, the inner wall at the recess is fixed to the bottom of supporting shoe.
Preferably, the grooves are provided with two groups, and the two groups of grooves are symmetrically arranged by taking the central line of the mounting plate in the vertical direction as a symmetrical axis.
Preferably, a spring is fixed on the outer wall of the rotating rod, and one side of the spring, which is far away from the rotating rod, is fixed on the inner wall of the fixed sleeve.
(III) beneficial effects
The invention provides an anti-falling structure for a precision fastener of server equipment. The beneficial effects are as follows:
(1) This a precision fastener anticreep structure for server equipment when screwing in the thread groove with the threaded rod, makes the second through-hole cover on the guide bar, when the threaded rod drives the disc and moves down, and then can make slotted hole department extrude the inclined plane of stopper, and then can make the disc extrude the stopper to move in the sleeve, make spring compression, when the top of disc and mounting panel is laminated, and then make the disc remove the bottom of stopper, through the effect of spring, and then make the bottom of stopper and the top laminating of disc, make the stopper spacing to the disc, and then play the effect of spacing threaded rod, can prevent that the threaded rod from breaking away from in the thread groove, influence the fixed effect of server subassembly.
(2) This be used for accurate fastener anticreep structure of server equipment, through reverse rotation knob when taking out the threaded rod from the screw groove when needs, through bull stick, first conical gear's cooperation, and then drive second conical gear forward rotation, and then make the dwang forward rotation, and then can make the dwang drive stop gear rotatory, when stop gear rotates the top of slotted hole, when making stopper and disc contactless, and then can rotate the knob, unscrew the threaded rod from the screw groove.
(3) This be used for accurate fastener anticreep structure of server equipment through setting up the guide bar, when the second through-hole cover of disc on the guide bar, can make the threaded rod be in the vertical state, makes threaded rod and screw thread groove align, and in the vertical state was screwed into the screw thread groove, did not align when preventing that the threaded rod from screwing into the screw thread groove, caused the smooth silk of threaded rod easily.
Drawings
FIG. 1 is a schematic view of the overall apparatus of the present invention;
FIG. 2 is a schematic diagram of the structure of the front view of the present invention;
FIG. 3 is an enlarged schematic view of the structure A of FIG. 2 according to the present invention;
FIG. 4 is an enlarged schematic view of the structure B of FIG. 2 according to the present invention;
FIG. 5 is a schematic top view of the disk of the present invention;
fig. 6 is a schematic top view of the stationary sleeve, spring and rotating rod of the present invention.
In the figure: 1. a threaded rod; 2. a thread groove; 3. a mounting block; 4. a mounting plate; 5. a rotary knob; 6. a first through hole; 7. a fixed block; 8. a chute; 9. a disc; 10. a second through hole; 11. a guide rod; 12. a slot hole; 13. a fixed sleeve; 14. a groove; 15. a spring; 16. a rotating lever; 17. a limiting mechanism; 171. a sleeve; 172. a spring; 173. a limiting block; 18. a control mechanism; 181. a rotating rod; 182. a first bevel gear; 183. a rotating handle; 184. a support block; 19. a second bevel gear.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-6, the present invention provides a technical solution: the utility model provides a be used for accurate fastener anticreep structure of server equipment, including threaded rod 1, threaded rod 1's screw thread department and thread groove 2 threaded connection, the thread groove 2 is offered in installation piece 3, the top of installation piece 3 is fixed with the bottom of mounting panel 4, first through-hole 6 has been offered in the mounting panel 4, it has threaded rod 1 to run through in the first through-hole 6, threaded rod 1's top is fixed with knob 5, threaded rod 1's outer wall is fixed with fixed block 7, fixed block 7 slidable mounting is in spout 8, spout 8 is offered on disc 9, and then when threaded rod 1 rotates, can not drive disc 9 and rotate, when threaded rod 1 moves down, can drive disc 9 and move down, second through-hole 10 has been offered on the disc 9, the diameter size of second through-hole 10 and the diameter size phase-match of guide rod 11, the guide rod 11 has been run through in the second through-hole 10, guide rod 11 is provided with four, two guide rods 11 are a set of, and two sets of guide rods 11 use the vertical epaxial central line of 4 to set up for symmetry, when second through-hole 10 on disc 9 overlaps on guide rod 11 when the thread rod 1 makes threaded rod 1 and thread groove 2 in the thread groove 2 is advanced to the thread groove 2, and the thread groove 2 is not had in the thread groove 2 is formed in the thread that the thread of setting is easy to the thread of the thread 1.
In this embodiment, the guide rod 11 is fixed at the top of the mounting plate 4, the mounting plate 4 is provided with two sets of grooves 14, the two sets of grooves 14 are symmetrically arranged by taking the central line of the vertical direction of the mounting plate 4 as a symmetrical axis, the inner wall of the groove 14 is fixed with a fixed sleeve 13, the inner wall of the fixed sleeve 13 is rotatably provided with a rotating rod 16, the disc 9 is provided with a slotted hole 12, the slotted hole 12 is penetrated with the rotating rod 16, the outer wall of the rotating rod 16 is fixed with a spring 15, one side of the spring 15 far away from the rotating rod 16 is fixed at the inner wall of the fixed sleeve 13, when the threaded rod 1 is screwed into the threaded groove 2, the second through hole 10 on the disc 9 is sleeved on the guide rod 11, the threaded rod 1 passes through the first through hole 6, the threaded rod 1 is aligned with the threaded groove 2, the rotary knob 5 can be rotated forward, the threaded rod 1 is screwed into the threaded groove 2, the threaded rod 1 is rotated and moves downwards while the disc 9 is driven to move downwards on the guide rod 11, the top of the rotating rod 16 is fixed with a limit mechanism 17, and a control mechanism 18 is arranged in the groove 14.
The above-mentioned stop gear 17 includes sleeve 171, the bottom of sleeve 171 is fixed at the top of dwang 16, the inner wall slidable mounting of sleeve 171 has stopper 173, one side that stopper 173 kept away from spring 172 is provided with the inclined plane, one side that stopper 173 is close to threaded rod 1 is fixed with spring 172, one side that stopper 173 kept away from is fixed at the inner wall of sleeve 171 to spring 172, when disc 9 descends to appointed position on guide bar 11, and then can make the inclined plane of groove hole 12 department extrusion stopper 173 of disc 9, and then can make disc 9 extrusion stopper 173 remove in sleeve 171, make spring 172 shrink, when disc 9 and mounting panel 4's top are laminated, and then make disc 9 remove to stopper 173's bottom, because second spring 172 is in compressed state, through the effect of second spring 172, and then drive stopper 173 and disc 9's top laminating of removing from sleeve 171, make stopper 173's bottom, make stopper 173 carry out the spacing to disc 9, and then play the effect of spacing threaded rod 1, can prevent that threaded rod 1 from breaking away from out from in thread groove 2, influence to server subassembly is fixed.
The control mechanism 18 includes a rotating rod 181, the rotating rod 181 penetrates through the groove 14, the rotating rod 181 is rotationally connected with the penetrating position, one end of the rotating rod 181 is fixedly provided with a rotating handle 183, the other end of the rotating rod 181 is fixedly provided with a first conical gear 182, the first conical gear 182 and the second conical gear 19 are in a mutually meshed state, the inner wall of the second conical gear 19 is fixed on the outer wall of the rotating rod 16, when the threaded rod 1 is unscrewed from the threaded groove 2, the rotating handle 183 can be further reversed, the rotating rod 181 is made to rotate reversely, the first conical gear 182 is driven to rotate reversely, the first conical gear 182 and the second conical gear 19 are in a mutually meshed state, the second conical gear 19 is further made to rotate positively, the spring 15 is contracted, the rotating rod 16 drives the limiting mechanism 17 to rotate positively, when the limiting mechanism 17 rotates to the top of the groove 12, the bottom of the limiting mechanism 173 is not contacted with the top of the disc 9, the rotating button 5 can be further reversed, the threaded rod 1 is unscrewed from the threaded groove 2, the rotating rod 181 penetrates through the supporting block 184, the rotating rod 181 and the penetrating position of the supporting block 184 is made to rotate, the rotating rod 181 is connected with the penetrating position of the supporting block 184, the rotating rod 184 is made to rotate, the bottom of the supporting block 184 is made to rotate reversely, the second conical gear 19 is made to rotate positively, the spring 15 is made to rotate positively, the limiting mechanism 17 is made to rotate positively, and the spring 17 is made to rotate positively, and rotates the limiting rod 17 is made to rotate positively, and rotates to rotate, when the rotating rod 184 is made to rotate, and is made to rotate, and is in a corresponding to rotate.
During operation (or during the use), when screwing in threaded rod 1 in screw thread groove 2, first with the second through-hole 10 cover on disc 9 on guide bar 11, can make threaded rod 1 be in the vertical state through guide bar 11, make threaded rod 1 pass first through-hole 6, and then make threaded rod 1 and screw thread groove 2 align, and then can forward turn button 5, make threaded rod 1 rotate, make threaded rod 1 screw in screw thread groove 2, make threaded rod 1 rotate and move down simultaneously, make threaded rod 1 drive disc 9 move down on guide bar 11, when threaded rod 1 drives the slotted hole 12 department of disc 9 and the inclined plane contact of stopper 173, can make the slotted hole 12 department of disc 9 extrude the inclined plane of stopper 173, and then when disc 9 continues to be close to mounting panel 4, because of the extrusion force can make stopper 173 move in sleeve 171, make spring 172 compress, when the screw thread department of 1 thoroughly screws in screw thread groove 2, and then make disc 9 move to the bottom of stopper 173, because of spring 172 is in the compression state, and then make the outer bottom of stopper 173 and mounting panel 173 and the top of the stopper 173, and can prevent that the stopper 173 from going out of service from going on in the steady position-stop member 1, and then can not making the stopper assembly 2 to come out from the position of the stopper 173.
When the threaded rod 1 is unscrewed from the thread groove 2, the rotating handle 183 can be further reversed, the rotating rod 181 is reversely rotated to drive the first conical gear 182 to reversely rotate, because the first conical gear 182 and the second conical gear 19 are meshed with each other, when the first conical gear 182 reversely rotates, the second conical gear 19 can be driven to positively rotate, the rotating rod 16 is further positively rotated, the rotating rod 16 drives the spring 15 to shrink, the rotating rod 16 drives the limit mechanism 17 to positively rotate, when the limit mechanism 17 rotates to the top of the slot 12, the bottom of the limit block 173 is not contacted with the top of the disc 9, the rotating button 5 can be further reversed, the threaded rod 1 can be further unscrewed from the thread groove 2, the threaded rod 1 drives the disc 9 to upwards move, the limit mechanism 17 passes through the slot 12, the disc 9 is further moved to the top of the limit mechanism 17, the threaded rod 1 can be further taken out from the first through hole 6 of the mounting plate 4, and convenience is brought to the operation of a worker, when the rotating handle 183 is released, the spring 15 is further in a shrinking state, the rotating rod 16 is driven by the spring 16, the spring 16 is further driven by the 15, the spring 16 is driven to be in situ, and the spring 16 is driven to return to the limit mechanism to the original position, and the limit mechanism can be further limited by the limit mechanism.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. Be used for accurate fastener anticreep structure of server equipment, including threaded rod (1), its characterized in that: the utility model discloses a guide rod, including mounting panel (11), screw thread department and thread groove (2) threaded connection of threaded rod (1), thread groove (2) are seted up in mounting panel (3), the top of mounting panel (3) is fixed with the bottom of mounting panel (4), first through-hole (6) have been seted up in mounting panel (4), run through in first through-hole (6) threaded rod (1), the top of threaded rod (1) is fixed with knob (5), the outer wall of threaded rod (1) is fixed with fixed block (7), fixed block (7) slidable mounting is in spout (8), spout (8) are seted up on disc (9), set up recess (14) in mounting panel (4), the inner wall of recess (14) is fixed with fixed sleeve (13), the inner wall rotation of fixed sleeve (13) is installed dwang (16), the top of dwang (16) is fixed with stop gear (17), be provided with control mechanism (18) in recess (14), set up second through-hole (10) on disc (9), second through-hole (10) are fixed with guide rod (11) in guide rod (11), the bottom of sleeve (171) is fixed at the top of dwang (16), the inner wall slidable mounting of sleeve (171) has stopper (173), one side that stopper (173) is close to threaded rod (1) is fixed with spring (172), one side that stopper (173) was kept away from to spring (172) is fixed at the inner wall of sleeve (171), slotted hole (12) have been seted up on disc (9), run through dwang (16) in slotted hole (12), control mechanism (18) include bull stick (181), the one end of bull stick (181) is fixed with and changes handle (183), the other end of bull stick (181) is fixed with first conical gear (182), first conical gear (182) are intermeshing with second conical gear (19), the inner wall of second conical gear (19) is fixed on the outer wall of dwang (16), bull stick (181) run through supporting shoe (184), and bull stick (181) are connected with the running through of supporting shoe (184), the inner wall of bottom (184) is fixed at supporting shoe (14).
2. The precision fastener release prevention structure for a server apparatus according to claim 1, wherein: the guide rods (11) are four, two guide rods (11) are in one group, and the two groups of guide rods (11) are symmetrically arranged by taking the central line of the mounting plate (4) in the vertical direction as a symmetrical axis.
3. The precision fastener release prevention structure for a server apparatus according to claim 1, wherein: two groups of grooves (14) are formed, and the two groups of grooves (14) are symmetrically arranged by taking the central line of the mounting plate (4) in the vertical direction as a symmetrical axis.
4. The precision fastener release prevention structure for a server apparatus according to claim 1, wherein: the outer wall of the rotating rod (16) is fixedly provided with a spring (15), and one side, far away from the rotating rod (16), of the spring (15) is fixed on the inner wall of the fixed sleeve (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210391322.8A CN114738367B (en) | 2022-04-14 | 2022-04-14 | Be used for accurate fastener anticreep structure of server equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210391322.8A CN114738367B (en) | 2022-04-14 | 2022-04-14 | Be used for accurate fastener anticreep structure of server equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114738367A CN114738367A (en) | 2022-07-12 |
| CN114738367B true CN114738367B (en) | 2024-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210391322.8A Active CN114738367B (en) | 2022-04-14 | 2022-04-14 | Be used for accurate fastener anticreep structure of server equipment |
Country Status (1)
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| WO2016019915A1 (en) * | 2014-08-08 | 2016-02-11 | 杨东佐 | Contraction connection assembly, contraction connection structure and connection method |
| CN110939643A (en) * | 2019-12-11 | 2020-03-31 | 储田生 | Anti-drop type fixing bolt |
| CN210790945U (en) * | 2019-11-04 | 2020-06-19 | 孙明 | Anti-drop pipe fitting support frame for civil engineering |
| CN112360866A (en) * | 2020-11-10 | 2021-02-12 | 黄飞妹 | Anti-loose combined bolt |
| CN213744307U (en) * | 2020-09-22 | 2021-07-20 | 杭州临安简诚办公用品有限公司 | Anti-dropping locking bolt for assembling wooden furniture |
| CN214171098U (en) * | 2020-12-07 | 2021-09-10 | 广州市墨竺恭卡电子科技有限公司 | Anti-loosening structure for screw of stop block on electric stay bar |
| CN214617443U (en) * | 2021-01-26 | 2021-11-05 | 浙江赛特机械股份有限公司 | Positive and negative check bolt nut |
| CN215257280U (en) * | 2021-08-03 | 2021-12-21 | 泰州市柳杰金属科技有限公司 | Explosion venting bolt fastener for pressure relief facility in nuclear power engineering |
| CN114182628A (en) * | 2021-12-23 | 2022-03-15 | 王世良 | Sealing protection structure for road and bridge expansion device |
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2022
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3330658A1 (en) * | 1983-08-25 | 1985-03-14 | Aluminium-Walzwerke Singen Gmbh, 7700 Singen | Device for connecting at least two plates |
| US4815908A (en) * | 1986-10-14 | 1989-03-28 | Avibank Mfg., Inc. | Captive panel fastener assembly |
| EP0354644A2 (en) * | 1988-08-08 | 1990-02-14 | Chaolai Fan | Screw drive mechanism and vice |
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| CN114182628A (en) * | 2021-12-23 | 2022-03-15 | 王世良 | Sealing protection structure for road and bridge expansion device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114738367A (en) | 2022-07-12 |
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