CN102155117A - Improved rotation tensioning lock - Google Patents
Improved rotation tensioning lock Download PDFInfo
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- CN102155117A CN102155117A CN 201110067580 CN201110067580A CN102155117A CN 102155117 A CN102155117 A CN 102155117A CN 201110067580 CN201110067580 CN 201110067580 CN 201110067580 A CN201110067580 A CN 201110067580A CN 102155117 A CN102155117 A CN 102155117A
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Abstract
The invention discloses an improved rotation tensioning lock. The lock comprises a lock shell, a lock core, and a rotation tongue, and is characterized in that: a sleeve is arranged at one end of the lock core; a spiral groove is formed on the wall of the sleeve, a lock rod is inserted into the sleeve, and a first shaft pin is arranged on the lock rod and is extended into the spiral groove to form first guide matching; and an L-shaped groove which is formed by communicating a circumferential groove and an axial groove is formed on the inner wall of the lock shell, a second shaft pin is arranged on the lock rod corresponding to the L-shaped groove and is extended into the L-shaped groove to form second guide matching. Under the combined action of two kinds of guide matching, a first section of rotation angle realizes rotation tongue locking and a second section of rotation angle realizes rotation tongue tensioning in the process of forward rotation and locking; and the first section of rotation angle realizes rotation tongue loosening and the second section of rotation angle realizes rotation tongue unlocking in the process of contrarotation unlocking. The improved rotation tensioning lock simplifies structural design and the smoothness and the reliability of lock movement are improved.
Description
Technical field
The present invention relates to lockset, the industrial revolution Strain lock of industries such as particularly track traffic, wind-power electricity generation, communication apparatus.The commentaries on classics tongue of this lockset not only has lock function and has the tension function simultaneously, can be applicable to a body, forms and cabinet etc.
Background technology
On the vehicle or equipment of industries such as track traffic, wind-power electricity generation, communication apparatus, use industrial lockset to come lock door body or forms in a large number.Chinese patent CN2549104Y discloses the utility model patent that a kind of name is called " the collapsible door lock of dead bolt ".This patent door lock is made up of parts such as lock housing, outer bush, interior guide pin bushing, lock core, rotating shaft, pin, dead bolts, is provided with the guiding mechanism of a cover spiral in the lock housing, and this guiding mechanism is worn to close by pin by outer bush, interior guide pin bushing, rotating shaft and formed.This lockset designs at closing a cabinet, and wherein, dead bolt (commentaries on classics tongue) has locking and tension dual-use function, but the shortcoming that exists is: 1. guide pin bushing, outer bush dual structure in, and part is many, and complex structure causes cost of production to increase; 2. in assembly structure,, be difficult to motion smoothness and reliability after assurance is assembled to the position accuracy demand height.For this reason, the present invention improves this door lock from the angle of simplified structure, assurance motion smoothness and reliability, to overcome above-mentioned defective.
Summary of the invention
The invention provides a kind of modified revolution Strain lock, its objective is performances such as wanting simplified structure design, the motion smoothness of raising product and reliability.
For achieving the above object, the technical solution used in the present invention is: a kind of modified revolution Strain lock, comprise lock housing, lock core, change tongue, wherein, has a pilot hole on the lock housing, lock core is positioned at this pilot hole, the end of lock core towards the lock housing front is provided with the on-off action portion that cooperates with key, its innovation is: lock core is provided with a sleeve towards an end at the lock housing back side, the barrel of this sleeve is provided with helicla flute, has a locking bar to be positioned at the pilot hole of lock housing, and the end of this locking bar towards the lock housing front is inserted in the described sleeve, be inserted on one section locking bar in the sleeve and radially be provided with first bearing pin, this first bearing pin stretches into helicla flute and forms the first guiding cooperation; The inwall of described pilot hole is provided with " L " shape groove, this " L " shape groove is connected by circumferential slot and these two sections grooves of axial groove and constitutes, wherein, it is circumferential that circumferential slot is arranged in pilot hole, it is axial that axial groove is arranged in pilot hole, corresponding " L " shape groove position radially is provided with second bearing pin on locking bar, this second bearing pin stretches into " L " shape groove and forms the second guiding cooperation; Locking bar stretches out from described pilot hole towards an end at the lock housing back side, and fixedlys connected with the commentaries on classics tongue.
The present invention interacts by first bearing pin and helicla flute between lock core and locking bar and forms first guiding and cooperates, leads and cooperates by the formation second that interacts of second bearing pin and " L " shape groove between lock housing and locking bar simultaneously.Owing to the acting in conjunction that first guiding cooperates and second guiding cooperates, in locking process, when key passes through on-off action portion forward rotation lock core, two sections corner strokes are arranged, wherein, first section corner is used for realizing that turning-bolt lock is fixed, and second section corner is used for realizing changeing tongue and strains; In the process of unblanking, when key passes through on-off action portion backward rotation lock core, two sections corner strokes are arranged also, wherein, first section corner is used for realizing changeing tongue to be loosened, and second section corner is used for realizing the release of commentaries on classics tongue.The present invention compared with prior art on the basis that keeps original locking and tension function, has omitted a guide pin bushing, simplifies the structure, and has reduced cost, helps applying of market.In addition, first guiding is cooperated in the present invention and second guiding cooperates these two kinds of different mechanisms to be combined in dexterously between lock housing, lock core and the locking bar three, and organically combine with the rotation of changeing tongue and tension, thereby improved the smoothness and the reliability of lockset motion.Therefore have outstanding substantive distinguishing features and significant technological progress.
Description of drawings
Accompanying drawing 1 is an embodiment of the invention stereogram;
Accompanying drawing 2 is an embodiment of the invention three-dimensional exploded view;
Accompanying drawing 3 is an embodiment of the invention lock housing front view;
Accompanying drawing 4 is the A-A sectional view of Fig. 3;
Accompanying drawing 5 is an embodiment of the invention lock housing cut-away view;
Accompanying drawing 6 is an embodiment of the invention lock core stereogram;
Accompanying drawing 7 is an embodiment of the invention user mode reference diagram ();
Accompanying drawing 8 is an embodiment of the invention user mode reference diagram (two);
Accompanying drawing 9A ~ 9C is respectively the various views of embodiment of the invention revolution Strain lock when being in unlocking condition;
Accompanying drawing 10A ~ 10C is respectively the various views of embodiment of the invention revolution Strain lock when being in the locking relaxation state;
Accompanying drawing 11A ~ 11C is respectively the various views of embodiment of the invention revolution Strain lock when being in the locking tension
Accompanying drawing 12 concerns schematic diagram for helicla flute of the present invention and " L " shape groove.
In the above accompanying drawing: 1. nut; 2. packing ring; 3. commentaries on classics tongue; 4. packing ring; 5. nut; 6. locking bar; 7. second bearing pin; 8. nut; 9. toothed pad; 10. packing ring; 11. lock housing; 12. spring; 13. first bearing pin; 14. lock core; 15. snap ring; 16. sealing ring; 17. second pin-and-hole; 18. first pin-and-hole; 19. pilot hole; " 20. L " shape groove; 21. helicla flute; 22. snap ring water jacket; 23. snap ring inside groove; 24. seal groove; 25. square termination; 26. door body; 27. doorframe; 28. helicla flute start position; 29. helicla flute final position; 30.L " shape groove start position; 31.L " shape groove final position.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is further described:
Embodiment: a kind of modified revolution Strain lock
As shown in Figure 1 and Figure 2, this lockset comprises lock housing 11, lock core 14, locking bar 6 and changes tongue 3, wherein, the main body of lock housing 11 is cylindric, cylindrical center has a pilot hole 19(to see Fig. 4 and Fig. 5), the outer rim of cylinder is provided with external screw thread, and an externally threaded end is provided with the shaft shoulder, this external screw thread cooperates with nut 8, and the end face of nut 8 cooperates with the shaft shoulder of cylinder one end by toothed pad 9, packing ring 10 and is used for lock housing 11 is installed in (see figure 7) on the body 26.Under confined state, lock core 14 is positioned at the pilot hole 19 of lock housing 11, the end of lock core 14 towards lock housing 11 fronts is provided with the on-off action portion that cooperates with key, this on-off action portion is that square termination 25(sees Fig. 6, it is square, can triangle be or two thread form that this can decide according to actual needs also).Lock core 14 is provided with a sleeve towards an end at lock housing 11 back sides, the barrel of this sleeve is provided with a pair of helicla flute 21(and sees Fig. 6, there is a helicla flute in the front, there is a helicla flute at the back side), under confined state, locking bar 6 is positioned at the pilot hole 19 of lock housing 11, the end of this locking bar 6 towards lock housing 11 fronts is inserted in the sleeve of lock core 14, radially be provided with the first pin-and-hole 18(on this of plug-in mounting section locking bar 6 and see Fig. 2), the first bearing pin 13(is housed in first pin-and-hole 18 sees Fig. 2), this first bearing pin 13 stretches into helicla flute 21 and forms the first guiding cooperation.The inwall of described pilot hole 19 is provided with a pair of " L " shape groove 20(and sees Fig. 4 and Fig. 5, be aspectant two " L " shape grooves 20 as can be seen among Fig. 4), this " L " shape groove 20 is connected by circumferential slot and these two sections grooves of axial groove and constitutes (see figure 5), wherein, it is circumferential that circumferential slot is arranged in pilot hole 19, and it is axial that axial groove is arranged in pilot hole 19.Under confined state, corresponding " L " shape groove 20 positions radially are provided with the second pin-and-hole 17(and see Fig. 2 on locking bar 6), second bearing pin 7 is housed in second pin-and-hole 17, this second bearing pin 7 stretches into " L " shape groove 20 and forms the second guiding cooperation.Do axially-movable in order to cooperate locking bar 6 relative lock cores 14, realize straining or loosening, be provided with the spring 12 of axial action between lock core 14 and locking bar 6, this spring 12 is sleeved on the locking bar 6, one end of spring 12 acts on the sleeve end face of lock core 14, and the other end acts on second bearing pin 7.Locking bar 6 stretches out from described pilot hole 19 towards an end at lock housing 11 back sides, and fixedlys connected with commentaries on classics tongue 3, and specific implementation is: adopt nut 1 and packing ring 2 will change tongue 3 with nut 5 and packing ring 4 and be clamped on lock housing 11 external parts.In the pilot hole 19 of lock housing 11, realize axial location in order to make lock core 14, be circumferentially with snap ring inside groove 23(in the sleeve outer rim of lock core 14 and see Fig. 6), see Fig. 5 to should snap ring inside groove 23 positions being circumferentially with snap ring water jacket 22() at pilot hole 19 inner edges of lock housing 11, have a snap ring 15(to see Fig. 2) be located between snap ring inside groove 23 and the snap ring water jacket 22, with this with lock core 14 relative lock housings 11 in axial location.Realize relative sealing between lock core 14 and the lock housing 11 in order to make, be circumferentially with seal groove 24(in the sleeve outer rim of lock core 14 and see Fig. 6), be embedded with sealing ring 16(in the seal groove 24 and see Fig. 2), sealing circle 16 forms hermetically-sealed construction between pilot hole 19 inner edges of the sleeve outer rim of lock core 14 and lock housing 11.
The course of work to present embodiment is described below:
Fig. 7 and Fig. 8 are embodiment of the invention user mode reference diagram, and wherein, Fig. 7 represents that the present invention turns round Strain lock and is installed in situation between a body 26 and the doorframe 27, changes tongue 3 and have axial tension action under lock-out state.Fig. 8 represents that the present invention turns round the commentaries on classics tongue 3 of Strain lock at locking and the state of lockset position of coupler for 90 ° of rotations.Certainly the rotational angle that changes tongue 3 can be determined according to concrete needs, 90 ° of optimum states just, greater than 90 ° or less than 90 ° also can, as long as between door body 26 and doorframe 27, can realize locking and unblank.
Fig. 9 A ~ 9C is respectively the various views of embodiment of the invention revolution Strain lock when being in unlocking condition, and wherein, Fig. 9 A is illustrated in the orientation of square termination 25 under the unlocking condition, with the triangle arrow towards on represent; Fig. 9 B is illustrated in first bearing pin, 13 relative helicla flutes 21 and second bearing pin, 7 relative " L " shape grooves, 20 residing positions under the unlocking condition with Fig. 9 C, promptly from Fig. 9 B as can be seen under unlocking condition, first bearing pin 13 is positioned at the minimum point of helicla flute 21, the rotation direction of this helicla flute 21 is dextrorotation (meeting the right-handed helix regulation), can see from Fig. 9 C that under unlocking condition second bearing pin 7 is arranged in circumferential slot one end (other end is the turning end) of " L " shape groove 20.
In shutting process, when key insertion square termination 25 clockwise rotates lock core 14, two sections corner strokes are arranged, first section corner stroke is 0 ° ~ 90 °, second section corner stroke is 90 ° ~ 180 °, wherein, first section corner stroke will change tongue 3 and change lock-out state into from open mode, and second section corner stroke will change tongue 3 and change tension into from relaxation state.
Respectively two sections corner strokes are described below:
1. first section corner stroke
Figure 10 A ~ 10C is respectively the various views of embodiment of the invention revolution Strain lock when being in the locking relaxation state.From the contrast of Figure 10 A and Fig. 9 A as can be seen, square termination 25 intermediate cam arrows clockwise rotates 90 ° of positions (from forwarding to towards the right side) up from 0 °.From the contrast of Figure 10 B and Fig. 9 B as can be seen, the position of first bearing pin, 13 relative helicla flutes 21 does not change, and promptly first bearing pin 13 still is positioned at the minimum point of helicla flute 21.From the contrast of Figure 10 C and Fig. 9 C as can be seen, second bearing pin 7 from circumferential slot one end motion that was arranged in " L " shape groove 20 originally to the circumferential slot other end (turning end).
In first section corner stroke, because the resistance of first bearing pin, 13 relative helicla flute 21 motions is greater than the resistance of motion of the circumferential slot of second bearing pin, 7 relative " L " shape grooves 20, when lock core 14 clockwise rotates, drive locking bar 6 and rotate, change tongue 3 and forward lock-out state to from open mode thereby drive.
2. second section corner stroke
Figure 11 A ~ 11C is respectively the various views of embodiment of the invention revolution Strain lock when being in the locking tension.From the contrast of Figure 11 A and Figure 10 A as can be seen, square termination 25 intermediate cam arrows clockwise rotates 180 ° of positions (from bearing right down) from 90 °.From the contrast of Figure 11 B and Figure 10 B as can be seen, first bearing pin 13 moves to the peak of helicla flute 21 from the minimum point that was positioned at helicla flute 21 originally.From the contrast of Figure 11 C and Figure 10 C as can be seen, second bearing pin 7 moves to axial groove one end (other end of axial groove is the turning end) from the circumferential slot other end (turning end) that was arranged in " L " shape groove 20 originally.
In second section corner stroke, because after second bearing pin 7 moves to the turning end of circumferential slot, limited the circumferential movement of second bearing pin 7, promptly limit locking bar 6 and followed the rotation of lock core 14, first bearing pin 13 moves to the peak of helicla flute 21 from the minimum point of helicla flute 21 when lock core 14 is rotated further, simultaneously second bearing pin 7 from the turning end of circumferential slot vertically groove do axially-movable, move to tension thereby will change tongue 3 from relaxation state.
The process of unblanking is with above-mentioned to shut process just in time opposite, key is inserted square termination 25 when rotating counterclockwise lock core 14, two sections corner strokes are arranged, first section corner stroke is to get back to 90 ° of positions from 180 ° of positions, because second bearing pin 7 is arranged in axial groove, locking bar 6 can not rotate, and first bearing pin 13 moves to minimum point from the peak of helicla flute 21 when lock core 14 rotates counterclockwise, simultaneously second bearing pin 7 vertically groove move to the turning end, change open mode thereby will change tongue 3 into from lock-out state.Second section corner stroke is to get back to 0 ° from 90 ° of positions, because first bearing pin 13 is obstructed after moving to the minimum point of helicla flute 21, drive locking bar 6 and rotate counterclockwise when being rotated further lock core 14, this moment second, bearing pin 7 moved along circumferential slot, will change tongue 3 and forward open mode to from lock-out state.
The rotation direction of helicla flute 21 is dextrorotation in the present embodiment, but the rotation direction of helicla flute 21 is changed into left-handed also to be feasible, to distinguish the rotation direction of just unblanking and shutting and will exchange that promptly shutting is counterclockwise to rotate, and unblanking is that clockwise direction rotates.In addition, " L " shape groove 20 constitutes and can make up with dextrorotation or left-handed helicla flute 21 as long as be connected by one section circumferential slot and one section axial groove, noticeable just: referring to shown in Figure 12, the start position 28 that first bearing pin 13 moves in helicla flute 21 is to final position 29,31 direction is consistent the start position 30 that need move in " L " shape groove 20 with second bearing pin 7 to the final position, can interfere at the volley otherwise understand both.This point is understandable after having read manual of the present invention to those skilled in the art.
The foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit essence is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (4)
1. a modified turns round Strain lock, comprise lock housing (11), lock core (14), change tongue (3), wherein, has a pilot hole (19) on the lock housing (11), lock core (14) is positioned at this pilot hole (19), lock core (14) is provided with the on-off action portion that cooperates with key towards the positive end of lock housing (11), it is characterized in that: lock core (14) is provided with a sleeve towards an end at lock housing (11) back side, the barrel of this sleeve is provided with helicla flute (21), there is a locking bar (6) to be positioned at the pilot hole (19) of lock housing (11), this locking bar (6) is inserted in the described sleeve towards the positive end of lock housing (11), be inserted on the one section locking bar (6) in the sleeve and radially be provided with first bearing pin (13), this first bearing pin (13) stretches into helicla flute (21) and forms the first guiding cooperation; The inwall of described pilot hole (19) is provided with " L " shape groove (20), this " L " shape groove (20) is connected by circumferential slot and these two sections grooves of axial groove and constitutes, wherein, it is circumferential that circumferential slot is arranged in pilot hole (19), it is axial that axial groove is arranged in pilot hole (19), corresponding " L " shape groove (20) position radially is provided with second bearing pin (7) on locking bar (6), this second bearing pin (7) stretches into " L " shape groove (20) and forms the second guiding cooperation; Locking bar (6) stretches out from described pilot hole (19) towards an end at lock housing (11) back side, and fixedlys connected with commentaries on classics tongue (3).
2. modified revolution Strain lock according to claim 1, it is characterized in that: the spring (12) that is provided with axial action between described lock core (14) and the locking bar (6), this spring (12) is sleeved on the locking bar (6), one end of spring (12) acts on the sleeve end face of lock core (14), and the other end acts on second bearing pin (7).
3. modified revolution Strain lock according to claim 1, it is characterized in that: the sleeve outer rim of described lock core (14) is circumferentially with snap ring inside groove (23), to being circumferentially with snap ring water jacket (22) by pilot hole (19) inner edge of snap ring inside groove (23) position in lock housing (11), have a snap ring (15) to be located between described snap ring inside groove (23) and the snap ring water jacket (22), with this with lock core (14) relatively lock housing (11) in axial location.
4. modified revolution Strain lock according to claim 1, it is characterized in that: the sleeve outer rim of described lock core (14) is circumferentially with seal groove (24), be embedded with sealing ring (16) in the seal groove (24), sealing circle (16) forms hermetically-sealed construction between pilot hole (19) inner edge of the sleeve outer rim of lock core (14) and lock housing (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100675802A CN102155117B (en) | 2011-03-21 | 2011-03-21 | Improved rotation tensioning lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100675802A CN102155117B (en) | 2011-03-21 | 2011-03-21 | Improved rotation tensioning lock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102155117A true CN102155117A (en) | 2011-08-17 |
| CN102155117B CN102155117B (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100675802A Active CN102155117B (en) | 2011-03-21 | 2011-03-21 | Improved rotation tensioning lock |
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| CN (1) | CN102155117B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306547A (en) * | 2013-05-14 | 2013-09-18 | 苏州德仕耐五金技术有限公司 | Anti-theft security tensioning lock |
| CN103321486A (en) * | 2013-05-14 | 2013-09-25 | 苏州德仕耐五金技术有限公司 | Anti-theft security rotary lock |
| CN104763249A (en) * | 2015-04-14 | 2015-07-08 | 浙江中立集团有限公司 | Prying prevention folding lock |
| CN106460411A (en) * | 2014-05-12 | 2017-02-22 | 安德劳斯工业锁具（深圳）有限公司 | Lock for left or right hand operation |
| CN110219559A (en) * | 2019-07-12 | 2019-09-10 | 深圳市龙电兴业科技有限公司 | A kind of water door |
| CN110735565A (en) * | 2019-10-11 | 2020-01-31 | 武汉中车长客轨道车辆有限公司 | adjustable four-corner lock device for railway vehicle |
| CN114961442A (en) * | 2022-04-27 | 2022-08-30 | 江西锐耐博科技有限公司 | Stainless steel tensioning lock with anti-vibration structure |
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| CN2549104Y (en) * | 2002-06-16 | 2003-05-07 | 姚春良 | Door-lock with telescopic bolt |
| CN2559719Y (en) * | 2002-06-17 | 2003-07-09 | 沈涛 | Step helical groove lock tumbler |
| DE102004048231A1 (en) * | 2004-10-04 | 2006-04-06 | Simonsvoss Technologies Ag | Resetting device for use in anti-panic lock, has spring arrangement that is arranged in longitudinal direction of locking cylinder and producing turning movement, which moves attachment of cylinder into predetermined position |
| CN200992837Y (en) * | 2006-11-07 | 2007-12-19 | 东隆五金工业股份有限公司 | Lock body driving structure |
| CN202031395U (en) * | 2011-03-21 | 2011-11-09 | 苏州德仕耐五金技术有限公司 | Improved revolution tensioning lock |
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2011
- 2011-03-21 CN CN2011100675802A patent/CN102155117B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2549104Y (en) * | 2002-06-16 | 2003-05-07 | 姚春良 | Door-lock with telescopic bolt |
| CN2559719Y (en) * | 2002-06-17 | 2003-07-09 | 沈涛 | Step helical groove lock tumbler |
| DE102004048231A1 (en) * | 2004-10-04 | 2006-04-06 | Simonsvoss Technologies Ag | Resetting device for use in anti-panic lock, has spring arrangement that is arranged in longitudinal direction of locking cylinder and producing turning movement, which moves attachment of cylinder into predetermined position |
| CN200992837Y (en) * | 2006-11-07 | 2007-12-19 | 东隆五金工业股份有限公司 | Lock body driving structure |
| CN202031395U (en) * | 2011-03-21 | 2011-11-09 | 苏州德仕耐五金技术有限公司 | Improved revolution tensioning lock |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306547A (en) * | 2013-05-14 | 2013-09-18 | 苏州德仕耐五金技术有限公司 | Anti-theft security tensioning lock |
| CN103321486A (en) * | 2013-05-14 | 2013-09-25 | 苏州德仕耐五金技术有限公司 | Anti-theft security rotary lock |
| CN103306547B (en) * | 2013-05-14 | 2015-09-09 | 苏州德仕耐五金技术有限公司 | Anti-theft security Strain lock |
| CN103321486B (en) * | 2013-05-14 | 2016-01-13 | 苏州德仕耐五金技术有限公司 | Anti-theft security rotary lock |
| CN106460411A (en) * | 2014-05-12 | 2017-02-22 | 安德劳斯工业锁具（深圳）有限公司 | Lock for left or right hand operation |
| CN104763249A (en) * | 2015-04-14 | 2015-07-08 | 浙江中立集团有限公司 | Prying prevention folding lock |
| CN104763249B (en) * | 2015-04-14 | 2017-03-01 | 浙江中立集团有限公司 | A kind of pick-proof fold latch |
| CN110219559A (en) * | 2019-07-12 | 2019-09-10 | 深圳市龙电兴业科技有限公司 | A kind of water door |
| CN110735565A (en) * | 2019-10-11 | 2020-01-31 | 武汉中车长客轨道车辆有限公司 | adjustable four-corner lock device for railway vehicle |
| CN114961442A (en) * | 2022-04-27 | 2022-08-30 | 江西锐耐博科技有限公司 | Stainless steel tensioning lock with anti-vibration structure |
| CN114961442B (en) * | 2022-04-27 | 2023-10-13 | 江西锐耐博科技有限公司 | Stainless steel tensioning lock with vibration-resistant structure |
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| CN102155117B (en) | 2012-11-07 |
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