CN101187271A - Pull-draw rotation type composite lock core - Google Patents
Pull-draw rotation type composite lock core Download PDFInfo
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- CN101187271A CN101187271A CNA2007101931091A CN200710193109A CN101187271A CN 101187271 A CN101187271 A CN 101187271A CN A2007101931091 A CNA2007101931091 A CN A2007101931091A CN 200710193109 A CN200710193109 A CN 200710193109A CN 101187271 A CN101187271 A CN 101187271A
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- outer lock
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Abstract
The invention discloses a push-pull rotary type compound lock pin, wherein an outer lock pin is a cylinder, and an axial through hole is arranged in the invention, an inner lock pin is sleeved in the axial through hole, which can slide along the axial through hole, the radial of the outer lock pin and the inner lock pin are provided with marble holes which are corresponded, marbles and springs are mounted in the marble holes, a key hole is arranged on the inner lock pin, and one end of the inner lock pin is provided with a pulling tablet, or one end of the outer lock pin is provided with a suspension loop, the peripheral surface of the outer lock pin is provided with a ring-shaped groove, and the outer surface of the inner lock pin is provided with a limit slot which is corresponded with a limit pin or a limit tablet on the outer lock pin, and the inner lock pin is led to move a displacement relative to the axial direction of the outer lock pin. In addition, the outer lock pin and the inner lock pin can constitute a cylinder which is sleeved and mounted in a fixed hub. The invention adopts a new structure and open way, which greatly improve the anti-theft opening property of the lock pin, and the invention can be matched with each lock body, which has good social and economic benefits.
Description
One. technical field: the present invention relates to a kind of lock core, particularly relate to a kind of pull-draw rotation type composite lock core.
Two. background technology: for the safety that protects one's own property, people often place hope on lockset, but, one of important means of robber's crime also is to start with from lockset, the one, by prize, pound, turn round, pull out, means such as brill destroy lockset because this method needs bigger tool used in crime, its target is big, and sound of movement is big, so the offender does not generally use; The 2nd, unblank by the so-called master key of self so-called technology and autogamy, because this method is more hidden, be not easy to be found, so the offender often uses.Produce the reason that this no key or master key are unblanked, be to have the factor of divulging a secret on the present lock core structure principle, as them changeless pellet shot from a slingshot hole site and spread pattern, same model lock core, identical hole count, equal pitch-row and the size of keyhole provide certain rules and digit basis to them.In addition, mostly be rotational structure greatly between lock core and the lock body at present, because the existence of machining error, it is poor to produce certain included angle when making two circles tangent, the existence of this angle difference, cause and can carry out changing joint to one by one pellet shot from a slingshot with foreign matter not as good as the tangent profound son of resistance, thus on tangent round core face the profound sub line of formation, make pellet shot from a slingshot out of control and unblank.
At these situations, people strengthen the intensity and the fastness of lockset on the one hand, improve the machining accuracy of lockset on the other hand, also improve the defending performance of lock core in addition, develop multiple theftproof lock, as: people develop cross lock core, to strengthen the theftproof performance of lock.But, no matter be that I-shaped lock or the big multipotency of cross lock are by the craftsman that unblanks (is the people of occupation to unblank specially) with repair the locksmith individually and open with technical approach, certainly, some thiefs also can be driven such lock, its reason also is that existing lock core generally all is to rotate to a direction, craftsman or the thief torsional forces when having key turns of unblanking is judged the position and the quantity of pellet shot from a slingshot, thereby opens lockset, makes lockset ineffective.
Three. summary of the invention:
Purpose of the present invention: overcome the deficiencies in the prior art, provide that a kind of modern design is unique, simple in structure, security performance is good, can adapt to the pull-draw rotation type composite lock core of large-scale production.
Technical scheme of the present invention: a kind of pull-draw rotation type composite lock core, contain lock core, pellet shot from a slingshot, spring and key, described lock core is made up of outer lock core and internal cylinder, wherein, outer lock core is a cylinder, be provided with axially extending bore in its body, described internal cylinder is sleeved in the described axially extending bore, the two shape is complementary, and through hole slides vertically, be respectively arranged with corresponding pellet shot from a slingshot hole on described outer lock core and the internal cylinder, described pellet shot from a slingshot is equipped with pellet shot from a slingshot and spring in the hole, offer keyhole on the described internal cylinder, and described internal cylinder one end is provided with plectrum or outer lock core one end is provided with link, the circumferential surface of described outer lock core is provided with annular groove, the external surface of described internal cylinder is provided with stopper slot, and this stopper slot is corresponding with spacer pin or banking stop on the outer lock core, makes internal cylinder move axially a section with respect to outer lock core and moves.
Described outer lock core is sleeved in the fixed cover, and described fixed cover is provided with alignment pin or spacer, and described alignment pin or spacer match with annular groove on the described outer lock core, outer lock core can only be rotated and can not move axially.
The contact surface that described internal cylinder and outer lock core have the pellet shot from a slingshot hole is the plane, and its pellet shot from a slingshot hole has a row at least, whenever drains into rare one.Be provided with back-moving spring between described outer lock core and the internal cylinder.
A kind of pull-draw rotation type composite lock core, contain lock core, pellet shot from a slingshot, spring and key, described lock core is made up of outer lock core and internal cylinder, wherein, outer lock core and internal cylinder are combined into a cylinder, and be sleeved in the fixed cover, described outer lock core and internal cylinder radially be provided with corresponding pellet shot from a slingshot hole, described pellet shot from a slingshot is equipped with pellet shot from a slingshot and spring in the hole, offer keyhole on the described internal cylinder, and, described internal cylinder one end is provided with plectrum or outer lock core one end is provided with link, the external surface of described internal cylinder is provided with stopper slot, this stopper slot is corresponding with spacer pin or banking stop on the outer lock core, makes internal cylinder move axially a section with respect to outer lock core and moves, and the circumferential surface of described outer lock core is provided with annular groove, this annular groove is provided with alignment pin with fixed cover or spacer matches, and outer lock core can only be rotated and can not move axially.
Described outer lock core and internal cylinder are semicylinder; Perhaps, one in described outer lock core and the internal cylinder is the large semicircle cylinder, and another is the small semicircle cylinder; Perhaps, described outer lock core is provided with axial pass trough, and described internal cylinder is sleeved in this axial pass trough, and the two shape is complementary.
Be respectively arranged with annular groove on described outer lock core and internal cylinder and the circumferential surface that fixed cover contacts, and under the unlocking condition, after internal cylinder moved axially, the annular groove that is provided with on outer lock core and the internal cylinder was corresponding.The annular groove that is provided with on described outer lock core and the internal cylinder is distributed on the whole outer surface, or is distributed on the local surfaces.
The contact surface that described internal cylinder and outer lock core have the pellet shot from a slingshot hole is the plane, and its pellet shot from a slingshot hole has a row at least, whenever drains into rare one.
Be provided with back-moving spring between described outer lock core and the internal cylinder; Be provided with back-moving spring between perhaps described internal cylinder and the fixed cover.
Beneficial effect of the present invention:
1. the present invention is novel in design unique, adopt brand-new structure and opening ways, its outer lock core and internal cylinder are formed a cylinder, internal cylinder outer lock core relatively axially moves, one end of the internal cylinder after moving axially stretches out outer lock core, the plectrum that is provided with on this end inserts the shift fork of lockset, shift fork is rotated, thereby reach the purpose of unblanking, perhaps, the annular groove of the internal cylinder after moving axially is corresponding with the annular groove on the outer lock core, makes the link turn-off of outer lock core end, reach the purpose of unblanking, this structure and opening ways have improved the anti-pirate of the open performance of lock core greatly.
2. the anti-pirate of the open of the present invention is effective, its outer lock core and internal cylinder plane contact, and link together by pellet shot from a slingshot and spring, plane contact has reduced the gap between the two, prevents that foreign matter from entering, and realizes a heavily anti-pirate of the open; Outer lock core can dally in fixed cover, and torsional forces information is not provided, and makes the keyless person of unblanking can't judge tram between lock core and the dead bolt driving member, realizes the anti-pirate of the open of two-fold; The key of coupling inserts in the keyhole of internal cylinder, and the height of pellet shot from a slingshot is adjusted, and internal cylinder is consistent with the height of the pellet shot from a slingshot at place, the contacted plane of outer lock core, and internal cylinder axially moves under the effect of key, implements then to unblank, and realizes triple anti-pirate of the open; Adopt many rows, a plurality of pellet shot from a slingshot, and pellet shot from a slingshot is staggered, makes the staggered engagement of pellet shot from a slingshot slit, no space, realize that quadruple prevents pirate of the open.
3, pellet shot from a slingshot of the present invention can be arranged on the same axis, this moment, the groove of key was opened on the side accordingly, pellet shot from a slingshot also can be arranged on the conplane different axis, this moment, the groove of key was opened on a side or the two sides accordingly, the shape and the position of key groove and pellet shot from a slingshot are complementary, to adjust the height of each pellet shot from a slingshot, make and to produce linear between outer lock core and the internal cylinder and move, the quantity of pellet shot from a slingshot is many and be staggered, increase the security performance of lock greatly, also reduce the repetitive rate of pellet shot from a slingshot and key simultaneously greatly.
4. the present invention is fit to large-scale production, and the arrangement of pellet shot from a slingshot is arranged according to multiplicative principle (repeated arrangement), is convenient to sequencing production, large-scale production like this, thereby reduces production costs, and reduces the inferior rate of product.
5, outer lock core of the present invention and internal cylinder can be made multiple shape, and the motion mode between the two also is variation, both can be locate mode push-and-pull campaign, can be again not rotary type motion of a push-and-pull, can also be plug-type again motion after turning an angle, anti-pirate of the open better effects if.
6. the scope of application of the present invention is wide, can be used with various lock bodies, and the selling market is wide, after the popularization, has good society and economic benefit.
Four. Figure of description:
Fig. 1 is one of structural representation of pull-draw rotation type composite lock core lock-out state;
Fig. 2 is the left pseudosection of pull-draw rotation type composite lock core shown in Figure 1;
Fig. 3 is the structural representation that pull-draw rotation type composite lock core shown in Figure 1 inserts key;
Fig. 4 is that pull-draw rotation type composite lock core shown in Figure 1 inserts the axially movable structural representation of key;
Fig. 5 be the pull-draw rotation type composite lock core lock-out state structural representation two;
Fig. 6 is the left pseudosection of pull-draw rotation type composite lock core shown in Figure 5;
Fig. 7 be the pull-draw rotation type composite lock core lock-out state structural representation three;
Fig. 8 is the left pseudosection of pull-draw rotation type composite lock core shown in Figure 7;
Fig. 9 be the pull-draw rotation type composite lock core lock-out state structural representation four;
Figure 10 is the left pseudosection of pull-draw rotation type composite lock core shown in Figure 9;
Figure 11 be the pull-draw rotation type composite lock core lock-out state structural representation five;
Figure 12 is the left pseudosection of pull-draw rotation type composite lock core shown in Figure 11;
Figure 13 be the pull-draw rotation type composite lock core lock-out state structural representation six;
Figure 14 is the left pseudosection of pull-draw rotation type composite lock core shown in Figure 13;
Figure 15 be the pull-draw rotation type composite lock core lock-out state structural representation seven;
Figure 16 is the left pseudosection of pull-draw rotation type composite lock core shown in Figure 15;
Figure 17 be the pull-draw rotation type composite lock core lock-out state structural representation eight;
Figure 18 is the left pseudosection of pull-draw rotation type composite lock core shown in Figure 17;
Figure 19 be the pull-draw rotation type composite lock core lock-out state structural representation nine;
Figure 20 is the left pseudosection of pull-draw rotation type composite lock core shown in Figure 19;
Figure 21 be the pull-draw rotation type composite lock core lock-out state structural representation ten;
Figure 22 is the left pseudosection of pull-draw rotation type composite lock core shown in Figure 21.
Five. the specific embodiment:
Embodiment one: referring to Fig. 1～Fig. 4, among the figure, the lock core of pull-draw rotation type composite lock core is made up of outer lock core 6 and internal cylinder 7, wherein, outer lock core 6 is a cylinder, be provided with half-cylindrical axially extending bore in it, internal cylinder 7 is sleeved in this axially extending bore, through hole slides vertically, outer lock core 6 and internal cylinder 7 radially be provided with corresponding pellet shot from a slingshot hole, pellet shot from a slingshot 4 and spring 3 are installed in the pellet shot from a slingshot hole by strip of paper used for sealing 2, offer keyhole on the internal cylinder 7, and, internal cylinder 7 one ends are provided with plectrum, and the circumferential surface of outer lock core 6 is provided with annular groove 10, and the external surface of internal cylinder 7 is provided with stopper slot 8, this stopper slot 8 is corresponding with spacer pin or banking stop 11 on the outer lock core 6, makes internal cylinder 7 move axially a section with respect to outer lock core 6 and moves.Outer lock core 6 is sleeved in the fixed cover 1, fixed cover 1 is provided with alignment pin or spacer 5, alignment pin or spacer 5 match with annular groove 10 on the outer lock core 6, outer lock core 6 can only be rotated and can not move axially, seal ring 9 is fixed on the external surface of fixed cover 1, prevents that alignment pin or spacer 5 from withdrawing from.
The contact surface that internal cylinder 7 and outer lock core 6 have the pellet shot from a slingshot hole is the plane, and there is a row in its pellet shot from a slingshot hole, and every row has six.
During use, fixed cover 1 is fixed on the lock body, after key 12 inserts keyhole, different pellets shot from a slingshot 4 is by the different height of jack-up, thereby the other end that makes pellet shot from a slingshot 4 is positioned on the end face of internal cylinder 7, promotes key 12, makes internal cylinder 7 do axial straight line and moves, the plectrum of internal cylinder 7 one end settings stretches out outer lock core 6, key 12 is rotated outer lock core 6 in fixed cover 1, the plectrum of internal cylinder 7 inserts in the shift fork of lock body, continue to forward to, shift fork drives dead bolt and realizes opening.After the unlatching, extract key 12, because the effect of resistance, internal cylinder 7 is pulled original position, finishes a circulation, in order to increase the reset effect of internal cylinder 7, can between outer lock core 6 and internal cylinder 7 back-moving spring be set.The displacement size of spacer pin on stopper slot 8 and the outer lock core 6 or banking stop 11 control internal cylinder 7 can be adjusted as required.
Embodiment two: referring to Fig. 5 and Fig. 6, numbering is identical with embodiment one among the figure, the meaning of representative is identical, difference is: the planform difference of fixed cover 1, to be adapted to different installation sites, in addition, the planform difference of internal cylinder 7, in the present embodiment, internal cylinder 7 end surface shape be cut fan-shaped.
Embodiment three: referring to Fig. 7 and Fig. 8, numbering is identical with embodiment one among the figure, the meaning of representative is identical, difference is: the planform difference of fixed cover 1, to be adapted to different installation sites, in addition, the planform difference of internal cylinder 7, in the present embodiment, internal cylinder 7 end surface shape are combinations of rectangle and arc.Pellet shot from a slingshot 4 is two rows, increases anti-pirate of the open.
Embodiment four: referring to Fig. 9 and Figure 10, numbering is identical with embodiment one among the figure, the meaning of representative is identical, and difference is: the planform difference of internal cylinder 7, in the present embodiment, internal cylinder 7 end surface shape are squares, internal cylinder 7 is positioned at the shaft core position of outer lock core 6, and pellet shot from a slingshot 4 is two to the single row type structure, and key is a plank frame, be provided with groove on two plate face, increase anti-pirate of the open.
Embodiment five: referring to Figure 11 and Figure 12, numbering is identical with embodiment four among the figure, the meaning of representative is identical, difference is: the planform difference of fixed cover 1, to be adapted to different installation sites, in addition, internal cylinder 7 end surface shape are combinations of rectangle and two circular arcs, internal cylinder 7 is positioned at the shaft core position of outer lock core 6, pellet shot from a slingshot 4 is two to single many rows formula structure, and key is a plank frame, and an one plate face is provided with one and arranges groove, another plate face is provided with two row's grooves, increases anti-pirate of the open greatly.
Embodiment six: referring to Figure 13 and Figure 14, numbering is identical with embodiment five among the figure, the meaning of representative is identical, difference is: outer lock core 6 is provided with axial pass trough, internal cylinder 7 is sleeved in this axial pass trough, its end surface shape is the combination of rectangle and two ends arc, and the outside cambered surface of internal cylinder 7 contacts with the inner surface of fixed cover 1.Since be not provided with annular groove 14 on the extrados of internal cylinder 7, the rotational angle of alignment pin or spacer 5 restriction outer lock cores 6, and outer lock core 6 can not be around fixed cover 1 full circle revolution.
Embodiment seven: referring to Figure 15 and Figure 16, numbering is identical with embodiment six among the figure, the meaning of representative is identical, difference is: the extrados of internal cylinder 7 is provided with annular groove 14, when internal cylinder 7 there is not axial advance, annular groove 10 on this annular groove 14 and the outer lock core 6 is not corresponding, because the effect of alignment pin or spacer 5, outer lock core 6 can only turn an angle, after internal cylinder 7 axial advance, annular groove 14 is corresponding with the annular groove 10 on the outer lock core 6, and outer lock core 6 can be around fixed cover 1 full circle revolution.
Embodiment eight: referring to Figure 17 and Figure 18, numbering is identical with embodiment one among the figure, the meaning of representative is identical, difference is: outer lock core 6 one ends are provided with link, this link is provided with breach, the external surface of internal cylinder 7 is provided with annular groove 14, when internal cylinder 7 there is not axial advance, annular groove 10 on this annular groove 14 and the outer lock core 6 is not corresponding, because the effect of alignment pin or spacer 5, outer lock core 6 can only turn an angle, after internal cylinder 7 axial advance, annular groove 14 is corresponding with the annular groove 10 on the outer lock core 6, and outer lock core 6 just can be around fixed cover rotating certain angle more than 1, breach on the link turns to the position of lock ring, thereby opens lockset.
Embodiment nine: referring to Figure 19 and Figure 20, numbering is identical with embodiment eight among the figure, and the meaning of representative is identical, and difference is: the planform difference of fixed cover 1, to be adapted to different installation sites, in addition, pellet shot from a slingshot 4 is unidirectional double-row type structure.
Embodiment ten: referring to Figure 19 and Figure 20, numbering is identical with embodiment eight among the figure, the meaning of representative is identical, difference is: outer lock core 6 and internal cylinder 7 are semicylinder, certainly, one in outer lock core 6 and the internal cylinder 7 also can be the large semicircle cylinder, and another can be for the small semicircle cylinder, does not describe in detail.
A plurality of embodiment can be formed in the quantity and the position that change the specific constructive form of outer lock core and internal cylinder, the specific constructive form that changes fixed cover and change pellet shot from a slingshot, are common excursion of the present invention, do not describe in detail one by one at this.
Claims (10)
1. pull-draw rotation type composite lock core, contain lock core, pellet shot from a slingshot, spring and key, it is characterized in that: described lock core is made up of outer lock core and internal cylinder, wherein, outer lock core is a cylinder, be provided with axially extending bore in its body, described internal cylinder is sleeved in the described axially extending bore, the two shape is complementary, and through hole slides vertically, is respectively arranged with corresponding pellet shot from a slingshot hole on described outer lock core and the internal cylinder, described pellet shot from a slingshot is equipped with pellet shot from a slingshot and spring in the hole, offer keyhole on the described internal cylinder, and described internal cylinder one end is provided with plectrum or outer lock core one end is provided with link, the circumferential surface of described outer lock core is provided with annular groove, the external surface of described internal cylinder is provided with stopper slot, and this stopper slot is corresponding with spacer pin or banking stop on the outer lock core, makes internal cylinder move axially a section with respect to outer lock core and moves.
2. pull-draw rotation type composite lock core according to claim 1, it is characterized in that: described outer lock core is sleeved in the fixed cover, described fixed cover is provided with alignment pin or spacer, described alignment pin or spacer match with annular groove on the described outer lock core, outer lock core can only be rotated and can not move axially.
3. pull-draw rotation type composite lock core according to claim 1 is characterized in that: the contact surface that described internal cylinder and outer lock core have the pellet shot from a slingshot hole is the plane, and its pellet shot from a slingshot hole has a row at least, whenever drains into rare one.
4. according to claim 1 or 2 or 3 described pull-draw rotation type composite lock cores, it is characterized in that: be provided with back-moving spring between described outer lock core and the internal cylinder.
5. pull-draw rotation type composite lock core, contain lock core, pellet shot from a slingshot, spring and key, it is characterized in that: described lock core is made up of outer lock core and internal cylinder, wherein, outer lock core and internal cylinder are combined into a cylinder, and be sleeved in the fixed cover, described outer lock core and internal cylinder radially be provided with corresponding pellet shot from a slingshot hole, described pellet shot from a slingshot is equipped with pellet shot from a slingshot and spring in the hole, offer keyhole on the described internal cylinder, and, described internal cylinder one end is provided with plectrum or outer lock core one end is provided with link, the external surface of described internal cylinder is provided with stopper slot, this stopper slot is corresponding with spacer pin or banking stop on the outer lock core, makes internal cylinder move axially a section with respect to outer lock core and moves, and the circumferential surface of described outer lock core is provided with annular groove, this annular groove is provided with alignment pin with fixed cover or spacer matches, and outer lock core can only be rotated and can not move axially.
6. pull-draw rotation type composite lock core according to claim 5 is characterized in that: described outer lock core and internal cylinder are semicylinder; Perhaps, one in described outer lock core and the internal cylinder is the large semicircle cylinder, and another is the small semicircle cylinder; Perhaps, described outer lock core is provided with axial pass trough, and described internal cylinder is sleeved in this axial pass trough, and the two shape is complementary.
7. pull-draw rotation type composite lock core according to claim 6, it is characterized in that: be respectively arranged with annular groove on described outer lock core and internal cylinder and the circumferential surface that fixed cover contacts, and, under the unlocking condition, after internal cylinder moved axially, the annular groove that is provided with on outer lock core and the internal cylinder was corresponding.
8. pull-draw rotation type composite lock core according to claim 7 is characterized in that: the annular groove that is provided with on described outer lock core and the internal cylinder is distributed on the whole outer surface, or is distributed on the local surfaces.
9. pull-draw rotation type composite lock core according to claim 5 is characterized in that: the contact surface that described internal cylinder and outer lock core have the pellet shot from a slingshot hole is the plane, and its pellet shot from a slingshot hole has a row at least, whenever drains into rare one.
10. according to the arbitrary described pull-draw rotation type composite lock core of claim 5～9, it is characterized in that: be provided with back-moving spring between described outer lock core and the internal cylinder; Be provided with back-moving spring between perhaps described internal cylinder and the fixed cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101931091A CN101187271A (en) | 2007-12-13 | 2007-12-13 | Pull-draw rotation type composite lock core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101931091A CN101187271A (en) | 2007-12-13 | 2007-12-13 | Pull-draw rotation type composite lock core |
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| Publication Number | Publication Date |
|---|---|
| CN101187271A true CN101187271A (en) | 2008-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101931091A Pending CN101187271A (en) | 2007-12-13 | 2007-12-13 | Pull-draw rotation type composite lock core |
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| CN (1) | CN101187271A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337849A (en) * | 2011-09-16 | 2012-02-01 | 樊俞成 | Mechanical lock cylinder |
| CN102373832A (en) * | 2010-08-13 | 2012-03-14 | 袁石楚 | Direct-push lock core with insurance |
| CN111637176A (en) * | 2020-06-15 | 2020-09-08 | 苏州绿科智能机器人研究院有限公司 | Novel self-locking type electronic mechanical brake |
| CN111780471A (en) * | 2020-06-19 | 2020-10-16 | 海信容声(广东)冷柜有限公司 | Refrigerator |
-
2007
- 2007-12-13 CN CNA2007101931091A patent/CN101187271A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373832A (en) * | 2010-08-13 | 2012-03-14 | 袁石楚 | Direct-push lock core with insurance |
| CN102373832B (en) * | 2010-08-13 | 2013-05-29 | 袁石楚 | Direct-push lock core with insurance |
| CN102337849A (en) * | 2011-09-16 | 2012-02-01 | 樊俞成 | Mechanical lock cylinder |
| CN111637176A (en) * | 2020-06-15 | 2020-09-08 | 苏州绿科智能机器人研究院有限公司 | Novel self-locking type electronic mechanical brake |
| CN111780471A (en) * | 2020-06-19 | 2020-10-16 | 海信容声(广东)冷柜有限公司 | Refrigerator |
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Open date: 20080528 |