CN101148952A - Z-shape idle running anti-theft lock - Google Patents
Z-shape idle running anti-theft lock Download PDFInfo
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- CN101148952A CN101148952A CNA2007101682667A CN200710168266A CN101148952A CN 101148952 A CN101148952 A CN 101148952A CN A2007101682667 A CNA2007101682667 A CN A2007101682667A CN 200710168266 A CN200710168266 A CN 200710168266A CN 101148952 A CN101148952 A CN 101148952A
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Abstract
The Z-type idly rotating pick-proof lock, in either core type or sleeve type, consists of an inner lock core, an outer lock core, balls, an unlocking core, key, a clutch unit, and other parts. It features the ball holes arranged in a Z form and symmetrically about the key hole, balls in elliptic or circular cross section, key hole in dumbbell shaped cross section, each ball hole with two balls set oppositely, and the inner lock core capable of rotating idly without correct key inserted. The core type lock has one core rod in a U-shaped structure, and the sleeve type lock has one core rod in a frame structure. The present invention has the advantages of hard to unlock without correct key, high reliability, and high universality.
Description
Technical field
The present invention relates to a kind of lock, exactly is the cylinder type anti-theft lock core.
Technical background
China Patent No. 200420087465.7 discloses " Z type antitheft sylinder " lock core patent, and this lock is owing to exist sagging cylinder type opening ways and do not have cylinder space, and its anti-technical opening performance brilliance is still still having some deficits aspect the tamper-proof unlatching.
Summary of the invention
The objective of the invention is to, providing a kind of anti-technical unlocking performance brilliance to possess simultaneously has extremely strong anti-destructive to open the cylinder type anti-theft lock core of performance, be called Z type idle running anti-theft lock, be divided into two kinds of styles of core formula and shell type, be called Z core formula idle running anti-theft lock and Z jacket formula idle running anti-theft lock, below can be called for short " core formula lock " and " shell type lock ".
Technical solution of the present invention in fact is to quote the basic principle of " Z type antitheft sylinder " invention, simplify its basic structure of improvement, internal cylinder can be dallied, and set up the unique structure member of the present invention and constitute corresponding arrangement of clutch, thereby formed the Z type idle running anti-theft lock lock core that can dally, its scheme is achieved in that
Z type idle running anti-theft lock, be divided into Z core formula idle running anti-theft lock and Z jacket formula idle running anti-theft lock, by common means internal cylinder (i.e. the lock core that can dally), outer lock core, pellet shot from a slingshot, marble spring, attached core, key etc. and multi-form arrangement of clutch and constitute undo the lock, every row pellet shot from a slingshot hole on its common being characterised in that: a, the internal cylinder is about key hole symmetry, and the both sides that ordered series of numbers (minimum is three row) pellet shot from a slingshot hole is arranged at the internal cylinder axis respectively become the Z type to be staggered; B, pellet shot from a slingshot hole comprise the cross section approximate ellipsoidal of pellet shot from a slingshot, also can get circle or rectangle; C, key hole comprise the approximate dumbbell shaped in the cross section of key body; The identical pellet shot from a slingshot of two grain length degree and two identical marble springs of length are housed in d, the every row pellet shot from a slingshot hole, and when not opening, pellet shot from a slingshot is symmetry to the top state; E, when this lock key is inserted in the key hole, arrangement of clutch is in " closing " state and can undoes the lock; F, insert or do not insert non-lock key or other objects when the key hole, when arrangement of clutch can not be in " closing " state, internal cylinder idle running can not undo the lock and maybe can not dally and can not undo the lock.
Z core formula idle running anti-theft lock constitutes arrangement of clutch by parts such as two pairs of core bars of axial action and corresponding on-of pin, the attached cores that undoes the lock.Internal cylinder is provided with the core bar groove, and two pairs of core bars are the U-shaped structure, is equipped with the clutch cotter way on the afterbody of internal cylinder and the attached core that undoes the lock.When undoing the lock, the difference of two pairs of core bars or outside direction of action axially inside, top formula, outer top formula and three kinds of arrangement of clutch of inside and outside top formula in being divided into along internal cylinder.Its common trait is: be equipped with trapezoidal action teeth groove on every pellet shot from a slingshot in a, internal cylinder, the action teeth groove also can be V-arrangement or arc, and the action teeth groove is located at the side of pellet shot from a slingshot, pellet shot from a slingshot axially on the position fixing; The lever arm of b, core bar is provided with the action tooth, and the action tooth can mesh with the action teeth groove on the pellet shot from a slingshot is corresponding.
The operating principle (sequence of movement when undoing the lock) of core formula lock arrangement of clutch:
Insert action tooth on this lock key → core bar to be meshed with action teeth groove on the pellet shot from a slingshot → half of on-of pin fall in the corresponding clutch cotter way → rotation key (internal cylinder) → undo the lock.At this moment, undo the lock attached core and internal cylinder is in linkage status.
When the arrangement of clutch of core formula lock was interior top formula, it is characterized in that: the action teeth groove on a, the pellet shot from a slingshot all was located on the outside side of pellet shot from a slingshot; Action tooth increment on b, the core bar arm is inside; C, two pairs of core bars can the disjunctor setting also can the split setting, when undoing the lock, two pairs of all inwardly actions of core bars.
When the arrangement of clutch of core formula lock was outer top formula, it is characterized in that: the action teeth groove on a, the pellet shot from a slingshot all was located on the inside side of pellet shot from a slingshot; Action tooth increment on b, the core bar arm is outside; C, two pairs of core bars can the disjunctor setting also can the split setting, when undoing the lock, two pairs of all outwards actions of core bars.
When the arrangement of clutch of core formula lock is inside and outside top formula, it is characterized in that: a, two pairs of core bar splits are provided with, and when undoing the lock, a core bar inwardly moves, and another core bar outwards moves; Action tooth increment on the core bar arm of b, inwardly action is inside, is located on the outside side of pellet shot from a slingshot with action teeth groove on the corresponding pellet shot from a slingshot of action tooth; Action tooth increment on the core bar arm of c, outwards action is outside, is located on the inside side of pellet shot from a slingshot with action teeth groove on the corresponding pellet shot from a slingshot of action tooth.
Z jacket formula idle running anti-theft lock constitutes arrangement of clutch by the two pairs of loop bars and the parts such as corresponding on-of pin, core retainer plate, outer lock core and the attached core that undoes the lock of radial action, the core retainer plate and the attached core that undoes the lock can the disjunctor setting also can the split setting.Internal cylinder is provided with the loop bar groove, and two pairs of loop bars are the shaped as frame structure.On the lateral surface of internal cylinder, be equipped with the clutch cotter way on the medial surface of core retainer plate body and outer lock core, on-of pin can also can be cylinder type for the bar pillar.It is characterized in that: be equipped with trapezoidal action teeth groove on every pellet shot from a slingshot in a, internal cylinder, the action teeth groove also can be V-arrangement or arc, and the action teeth groove is located at the top side face of pellet shot from a slingshot, pellet shot from a slingshot axially on the position fixing; Two arms of b, loop bar are provided with the action tooth, and the action tooth can mesh with the action teeth groove on the pellet shot from a slingshot is corresponding; C, two pairs of loop bar splits are provided with, and when undoing the lock, two pairs of loop bars are all along radially inwardly action of internal cylinder.
The operating principle (sequence of movement when undoing the lock) of shell type lock arrangement of clutch:
Insert action tooth on this lock key → loop bar to be meshed with action teeth groove on the pellet shot from a slingshot → half of on-of pin fall in the corresponding clutch cotter way, and locked between internal cylinder and the core retainer plate, internal cylinder no longer dallies; Locking between core retainer plate and the outer lock core is unlocked → rotates key (internal cylinder and core retainer plate interlock) → undo the lock.At this moment, undo the lock attached core and internal cylinder is in linkage status.
Z type idle running anti-theft lock, if use the pellet shot from a slingshot of cross section as circle, then the action teeth groove on the pellet shot from a slingshot is a circumferential groove.
Z type idle running anti-theft lock, different according to the size of lockset and shape and structure, according to functional performance require (be anti-destructive open performance and special additional function as: monolock core or twin-lock core core-inset type anti-theft lock for anti-theft, automotive door are pressed open-type anti-theft lock etc.) difference, difference according to the arrangement of clutch of its core formula lock can adopt the associated methods of different interior outer lock cores and cooperate the attached core that undoes the lock (containing the tongue switching parts) that adapts.
The following advantage of tool of the present invention:
One, any special tool(s) or specific process all can not be technical or inartful open this lock;
Two, non-original key or master key or hit the spoon (tooth) method can not open this lock;
Three, extremely strong anti-various destructive unlatching the only (as: bore, sled, strand, group etc.) performance;
Four, compatibility is strong, is applicable to the manufacturing of various locks (as: safe-guard door lock, automobile anti-theft lock, motorcycles and electric vehicles theftproof lock, safety cabinet lock etc.) lock core.
Description of drawings
Fig. 1 is a kind of outer top formula Z core formula idle running anti-theft lock basic structure schematic diagram;
Fig. 2 is end face and the generalized section that core formula shown in Figure 1 is locked;
Fig. 3 is the core bar basic structure schematic diagram that core formula shown in Figure 1 is locked;
Fig. 4 is a kind of outer top formula attached core schematic diagram that undoes the lock that can self-locking;
Fig. 5 be a kind of in the basic structure schematic diagram of core bar of core formula lock of top formula;
The attached core basic structure schematic diagram that undoes the lock that Fig. 6 adapts for a kind of and interior top formula disjunctor core bar;
Fig. 7 for a kind of and interior top formula disjunctor core bar and split core bar all adapt can self-locking the attached core basic structure schematic diagram that undoes the lock;
Fig. 8 for a kind of and interior top formula disjunctor core bar and split core bar all adapt can self-locking the attached core basic structure schematic diagram that undoes the lock;
The attached core basic structure schematic diagram that undoes the lock that Fig. 9 adapts for a kind of and inside and outside top formula core bar;
Figure 10 is that a kind of outer top formula Z core formula idle running anti-theft lock is applied to the attached core basic structure schematic diagram that undoes the lock on core-inset type (twin-core) the security door hand holding lock;
Figure 11 is a kind of basic structure schematic diagram of Z jacket formula idle running anti-theft lock;
Figure 12 is the internal cylinder basic structure schematic diagram that shell type shown in Figure 11 is locked;
Figure 13 is the loop bar basic structure schematic diagram that shell type shown in Figure 11 is locked;
Figure 14 is the core retainer plate basic structure schematic diagram that shell type shown in Figure 11 is locked;
Figure 15 is the cylinder type on-of pin partial structurtes schematic diagram of Figure 11 shell type lock;
Figure 16 is a kind of conventional associated methods schematic diagram of core formula lock;
Figure 17 is a kind of conventional associated methods schematic diagram of core formula lock;
Figure 18 is a kind of reinforcement associated methods schematic diagram of core formula lock.
The specific embodiment
Associated components (parts) numbering:
Embodiment 1:
Fig. 1, Fig. 2, Figure 3 shows that a kind of arrangement of clutch is the basic structure of the Z core formula idle running anti-theft lock of outer top formula, constitute by members such as internal cylinder 1, outer lock core 3, pellet shot from a slingshot 4, marble spring 5, undo the lock attached core 6 and dead bolt plectrum 7 and core bar 8, on-of pin 10, on-of pin springs 12.Pellet shot from a slingshot hole 13 is about key hole 14 symmetries, the 13 one-tenth Z types in ordered series of numbers pellet shot from a slingshot hole are staggered, pellet shot from a slingshot hole 13 comprises the cross section approximate ellipsoidal of pellet shot from a slingshot 4, key hole 14 comprises the approximate dumbbell shaped in the cross section of key body, pellet shot from a slingshot 4 in the pellet shot from a slingshot hole 13 is symmetry to the top state, when inserting this lock key, all action teeth 15 on the core bar 8 all are meshed with action teeth groove 16 on the pellet shot from a slingshot 4, core bar 8 and on-of pin 10 are under the effect of on-of pin spring 12, axially outwards move simultaneously, half of on-of pin 10 falls in the clutch cotter way 17, at this moment, internal cylinder 1 links by the on-of pin 10 and the attached core 6 that undoes the lock, and the rotation key interlock attached core 6 that undoes the lock undoes the lock.
Fig. 2 A-A is core formula lock internal cylinder 1 an outer face schematic diagram shown in Figure 1;
Fig. 2 B-B is a core formula lock sectional drawing shown in Figure 1;
Fig. 2 C-C is that core formula shown in Figure 1 is locked internal cylinder 1 the inner and schematic diagram;
Fig. 2 D-D is that core formula shown in Figure 1 is locked the attached core 6 inner face schematic diagrames that undo the lock.
Fig. 3 is the basic structure of core formula lock core pole 8 shown in Figure 1, and for outer top formula disjunctor is provided with, the increment 18 of all action teeth 15 on its lever arm is all outside.If remove right and left shoulders 19, then core bar is split setting up and down; If remove and take on 20 up and down, then core bar is the split left and right setting.
Fig. 4 is on the basis of the attached core 6 that undoes the lock of core formula lock shown in Figure 1, add radially limit catch 21, when internal cylinder 1 idle running, undo the lock and be in the lock state (that is: attached core 6 self-lockings undo the lock) between attached core 6 and the outer lock core 3, in the limit catch hole on the corresponding outer lock core 3 pellet shot from a slingshot (or ball) and spring are housed.
Arrangement of clutch is that the facility of Z core formula idle running anti-theft lock of interior top formula and inside and outside top formula is brief:
Be illustrated in figure 5 as a arrangement of clutch and be the basic structure that core bar 8 disjunctors of the core formula lock of interior top formula are provided with, the increment 18 of all action teeth 15 on the lever arm is all inside, and its split method to set up is with outer top formula.
Interior top formula arrangement of clutch must be set up core bar operating spring 22 in internal cylinder afterbody (suitable position), on-of pin 10 can with core bar 8 disjunctor settings.
Attached core 6 basic structures that undo the lock that Fig. 6 adapts for a kind of and interior top formula disjunctor core bar.
Fig. 7 for a kind of and interior top formula disjunctor core bar and split core bar all adapt can self-locking attached core 6 basic structures that undo the lock.When undoing the lock, limit catch 21 is radially outward pushed, remove the lock-out state of undo the lock attached core 6 and outer lock core 3 through push rod 23.As shown in Figure 8, thus also limit catch 21 radially inwardly can be pushed release.
Arrangement of clutch is the core bar that the core formula of inside and outside top formula is locked, and its outer plunger tip bar and interior plunger tip bar should be the split setting, and outer plunger tip bar can be got one of the outer top of Fig. 3 formula split setting and pay core bar, and interior plunger tip bar can be got one of the interior top of Fig. 5 formula split setting and pay core bar.
Fig. 9 is the attached core basic structure that undoes the lock that the core bar of a kind of and inside and outside top formula arrangement of clutch adapts, and on-of pin 10 is the arc column shape, i.e. watt shape.
Figure 10 is that a kind of outer top formula Z core formula idle running anti-theft lock is applied to the attached core 6 basic structure schematic diagrames that undo the lock on core-inset type (twin-core) the security door hand holding lock.
Embodiment 2:
Figure 11, Figure 12, Figure 13, Figure 14 shows that the basic structure of a Z jacket formula idle running anti-theft lock, constitute by members such as internal cylinder 1, core retainer plate 2, outer lock core 3, pellet shot from a slingshot 4 and marble spring 5 (annotate: pellet shot from a slingshot 4 and marble spring 5 be diagram directly perceived), undo the lock attached core 6 and dead bolt plectrum 7 and loop bar 9, on-of pin 10, the decorative pearl on top of an official cap (or pellet shot from a slingshot) 11, on-of pin springs 12.Pellet shot from a slingshot hole 13 is about key hole 14 symmetries, the 13 one-tenth Z types in ordered series of numbers pellet shot from a slingshot hole are staggered, pellet shot from a slingshot hole 13 comprises the cross section approximate ellipsoidal of pellet shot from a slingshot 4, key hole 14 comprises the approximate dumbbell shaped in the cross section of key body, pellet shot from a slingshot 4 in the pellet shot from a slingshot hole 13 is symmetry to the top state, and the pellet shot from a slingshot 4 in its internal cylinder and the locus of marble spring 5 and core formula lock are identical.When inserting this lock key, all action teeth 15 on the loop bar 9 all are meshed with action teeth groove 16 on the pellet shot from a slingshot 4, loop bar 9 and on-of pin 10 and the decorative pearl on top of an official cap 11 are under the effect of on-of pin spring 12, radially move inward simultaneously, half of on-of pin 10 falls in the clutch cotter way 17, locked between internal cylinder 1 and the core retainer plate 2 because of moving in the on-of pin 10, locking between core retainer plate 2 and the outer lock core 3 is unlocked because of moving in the on-of pin 10, at this moment, internal cylinder 1 links by the on-of pin 10, core retainer plate 2 and the attached core 6 that undoes the lock, and the rotation key interlock attached core 6 that undoes the lock undoes the lock.
Figure 15 is the partial structurtes schematic diagram of Z jacket formula idle running anti-theft lock when on-of pin 10 is cylinder type shown in Figure 11, and its corresponding clutch cotter way 17 is a cylindrical hole.
Associated methods (the containing the tongue switching parts) facility of the interior outer lock core of Z core formula idle running anti-theft lock and Z jacket formula idle running anti-theft lock is brief:
Figure 1 shows that a kind of associated methods of core formula lock, between internal cylinder 1 and the outer lock core 3 and undo the lock and use spacer pin 24 and spacer pin (card) 25 spacing between attached core 6 and the outer lock core 3 respectively.Spacer pin 24 and spacer pin 25 are the export trade form, and spacer pin 24 can be set to sold inside the country formula.
Figure 11 shows that the associated methods a kind of commonly used of shell type lock, the outer end of its lock core relies on the inner spacing card 25 that relies on of shoulder 26 spacing.
Figure 16, Figure 17 are the conventional associated methods of core formula lock, and the outer end between its internal cylinder 1 and the outer lock core 3 relies on the shoulder 26 inner spacer pins 24 that rely on spacing, and it undoes the lock spacing with spacer pin 25 between attached core 6 and the outer lock core 3.It should be noted that when being provided with that spacer pin 24 can not influence the action of core bar.
Figure 18 is a kind of reinforcement associated methods of core formula lock, its outer lock core 3 can be divided into two sections settings with internal cylinder 1 corresponding part, so that thicken its inside and outside shoulder 26, can strengthen its anti-outer ability of dialling and preventing interior top, this method to set up also is applicable to the shell type lock.
Claims (6)
1. cylinder type of the present invention " Z type idle running anti-theft lock " lock core, be divided into Z core formula idle running anti-theft lock and two kinds of money forms of Z jacket formula idle running anti-theft lock, by common means internal cylinder, outer lock core, pellet shot from a slingshot, marble spring, attached core, key etc. and multi-form arrangement of clutch and constitute its common being characterised in that undo the lock:
Every row pellet shot from a slingshot hole on a, the internal cylinder is about key hole symmetry, and the both sides that ordered series of numbers pellet shot from a slingshot hole is arranged at the internal cylinder axis respectively become the Z type to be staggered;
B, pellet shot from a slingshot hole comprise the cross section approximate ellipsoidal of pellet shot from a slingshot, also can get circle or rectangle;
C, key hole comprise the approximate dumbbell shaped in the cross section of key body;
The identical pellet shot from a slingshot of two grain length degree and two identical marble springs of length are housed in d, the every row pellet shot from a slingshot hole, and when not opening, pellet shot from a slingshot is symmetry to the top state;
E, when this lock key is inserted in the key hole, arrangement of clutch is in " closing " state and can undoes the lock;
F, insert or do not insert non-lock key or other objects when the key hole, when arrangement of clutch can not be in " closing " state, internal cylinder idle running can not undo the lock and maybe can not dally and can not undo the lock.
2. Z core formula idle running anti-theft lock as claimed in claim 1 constitutes arrangement of clutch by parts such as two pairs of core bars of axial action and corresponding on-of pin, the attached cores that undoes the lock.Internal cylinder is provided with the core bar groove, and two pairs of core bars are the U-shaped structure, is equipped with the clutch cotter way on the afterbody of internal cylinder and the attached core that undoes the lock.When undoing the lock, the difference of two pairs of core bars or outside direction of action axially inside, top formula, outer top formula and three kinds of arrangement of clutch of inside and outside top formula in being divided into along internal cylinder.Its common trait is:
Be equipped with trapezoidal action teeth groove on every pellet shot from a slingshot in a, internal cylinder, the action teeth groove also can be V-arrangement or arc, and the action teeth groove is located at the side of pellet shot from a slingshot, pellet shot from a slingshot axially on the position different fixed;
The lever arm of b, core bar is provided with the action tooth, and the action tooth can mesh with the action teeth groove on the pellet shot from a slingshot is corresponding.
3. as claim 1, the described Z core of claim 2 formula idle running anti-theft lock, when arrangement of clutch is interior top formula, it is characterized in that:
Action teeth groove on a, the pellet shot from a slingshot all is located on the outside side of pellet shot from a slingshot;
Action tooth increment on b, the core bar arm is inside;
C, two pairs of core bars can the disjunctor setting also can the split setting, when undoing the lock, two pairs of all inwardly actions of core bars.
4. as claim 1, the described Z core of claim 2 formula idle running anti-theft lock, when arrangement of clutch is outer top formula, it is characterized in that:
Action teeth groove on a, the pellet shot from a slingshot all is located on the inside side of pellet shot from a slingshot;
Action tooth increment on b, the core bar arm is outside;
C, two pairs of core bars can the disjunctor setting also can the split setting, when undoing the lock, two pairs of all outwards actions of core bars.
5. as claim 1, the described Z core of claim 2 formula idle running anti-theft lock, when arrangement of clutch is inside and outside top formula, it is characterized in that:
A, two pairs of core bar splits are provided with, and when undoing the lock, a core bar inwardly moves, and another core bar outwards moves;
Action tooth increment on the core bar arm of b, inwardly action is inside, is located on the outside side of pellet shot from a slingshot with action teeth groove on the corresponding pellet shot from a slingshot of action tooth;
Action tooth increment on the core bar arm of c, outwards action is outside, is located on the inside side of pellet shot from a slingshot with action teeth groove on the corresponding pellet shot from a slingshot of action tooth.
6. Z jacket formula idle running anti-theft lock as claimed in claim 1 constitutes arrangement of clutch by the two pairs of loop bars and the parts such as corresponding on-of pin, core retainer plate, outer lock core and the attached core that undoes the lock of radial action, the core retainer plate and the attached core that undoes the lock can the disjunctor setting also can the split setting.Internal cylinder is provided with the loop bar groove, and two pairs of loop bars are the shaped as frame structure.On the lateral surface of internal cylinder, be equipped with the clutch cotter way on the medial surface of core retainer plate body and outer lock core, on-of pin can also can be cylinder type for the bar pillar.It is characterized in that:
Be equipped with trapezoidal action teeth groove on every pellet shot from a slingshot in a, internal cylinder, the action teeth groove also can be V-arrangement or arc, and the action teeth groove is located at the top side face of pellet shot from a slingshot, pellet shot from a slingshot axially on the position fixing;
Two arms of b, loop bar are provided with the action tooth, and the action tooth can mesh with the action teeth groove on the pellet shot from a slingshot is corresponding;
C, two pairs of loop bar splits are provided with, and when undoing the lock, two pairs of loop bars are all along radially inwardly action of internal cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101682667A CN101148952A (en) | 2007-10-30 | 2007-10-30 | Z-shape idle running anti-theft lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101682667A CN101148952A (en) | 2007-10-30 | 2007-10-30 | Z-shape idle running anti-theft lock |
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| Publication Number | Publication Date |
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| CN101148952A true CN101148952A (en) | 2008-03-26 |
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| CNA2007101682667A Pending CN101148952A (en) | 2007-10-30 | 2007-10-30 | Z-shape idle running anti-theft lock |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015070520A1 (en) * | 2013-11-15 | 2015-05-21 | 康金华 | Foldable vertically independent two-level parking garage |
| CN110544439A (en) * | 2019-09-16 | 2019-12-06 | 深圳利亚德光电有限公司 | box body connecting lock, spliced box body and LED spliced screen |
-
2007
- 2007-10-30 CN CNA2007101682667A patent/CN101148952A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015070520A1 (en) * | 2013-11-15 | 2015-05-21 | 康金华 | Foldable vertically independent two-level parking garage |
| CN110544439A (en) * | 2019-09-16 | 2019-12-06 | 深圳利亚德光电有限公司 | box body connecting lock, spliced box body and LED spliced screen |
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