CN101037911A

CN101037911A - Shackles type lockset

Info

Publication number: CN101037911A
Application number: CN 200610157809
Authority: CN
Inventors: 罗士中
Original assignee: 罗士中
Current assignee: Shenzhen Aoqi locks Co. Ltd.
Priority date: 2006-12-21
Filing date: 2006-12-21
Publication date: 2007-09-19
Anticipated expiration: 2026-12-21
Also published as: CN101037911B

Abstract

A chain type lockset, comprising lock body with latching mechanism and U-shaped opening for blocking-winding the locked articles. The locked element for enclosing the U-shaped opening is swinging hinged with the lock body, the latching mechanism acts on hinged place of the locked element for restricting or releasing swing of the locked element relative to the lock body. Rotator of the locked element recesses on side edge of the lock body in same direction of the U-shaped opening, which is hinged on the lock body to form a plug tenon type butt hinge. The latching mechanism is installed inside the lock body relatively to rotator of the locked element, and a penetration is provided between installment hole of latching element of the latching mechanism and the recession of the rotator inside the lock body. When spring bolt of the locked element swings to the U-shaped opening for enclosing the lock body, the latching element falls into latching gap of the rotator, swing of the locked element is restricted, and the chain lock is latched. Advantages of the technical project are: the rotator slidely fits the lock body, which has a good security; the chain lock equipped with accessories of a locking bar, locking fork or locking hook or sleeve barrel or another chain lock can be used in various fields.

Description

Shackles type lockset

Technical field

The present invention relates to lockset, especially relate to the shackles type special lockset, be applicable to the theftproof lock of automobile and other industries.

Background technology

Have shackles type lockset now referring to Chinese utility model patent, patent No. ZL95216570.8, name is called " a kind of hinge type handcuffss ".The described handcuffss of this technology are paired settings, mutually by the multi-disc hinge-coupled.Articulated clamp ring on its handcuffs body, the non-hinged end of clamp ring is provided with ratchet, and this ratchet is meshed with locking tooth in the lock core.

The handcuffss of prior art nearly all are that the non-hinged end in clamp ring is provided with ratchet, and the keyhole that the back ratchet of locking enters is positioned at the outside of convict's wrist, make the convict might utilize the sled tool of exchanging work that handcuffss are opened.

The paired handcuffss that are provided with adopt chain or similar item to be mostly and flexibly connect, only be suitable for pinning people's trick, or two articles contact zip together.

Summary of the invention

The technical problem to be solved in the present invention is, provides a kind of difficult sled to dial, and can be provided with in pairs, can pin the shackles type lockset of different objects with behind single other annex of fetters and hand cuffs lock collocation again.

Technical scheme of the present invention is: a kind of shackles type lockset, comprise the lock body that has lockable mechanism, described lock body is provided with the U-shaped opening of card around the locked object body, be equipped with on the described lock body be used to seal the U-shaped opening by locking element.Its main feature is, is tilting articulated between locking element and the lock body, and lockable mechanism acts on by the hinged place of locking element, is used to limit or discharges by the swing of locking element with respect to lock body.

The U-shaped opening of this technical scheme lock body is towards the side of lock body.Formed by the length dead bolt suitable and the rotor of dead bolt root by locking element, be recessed in side with U-shaped opening lock body in the same way, be hinged on and constitute plug tenon formula hinge on the lock body by the rotor of locking element with the U-shaped A/F.Lockable mechanism is installed in the lock body with corresponding by the rotor of locking element, the installing hole of the locking element of lockable mechanism runs through with being had by the recess of the rotor of locking element in lock body, and the position of described rotor corresponding through part when dead bolt sealing lock body U-shaped opening is provided with the locking breach.The spring of unblanking that acts on by between locking element and the lock body is installed in the lock body.

When being swung to the U-shaped opening of sealing lock body by the dead bolt of locking element, locking breach by the rotor of locking element is corresponding with the locking element of through part, locking element falls into by in the locking breach of locking element, has limited by the swing of locking element, and the fetters and hand cuffs lock is lockup state.

The head of lock body is the latch hook of U-shaped opening towards side, the middle part of lock body is provided with the arc groove that is slidingly matched with rotor, the both sides of arc groove are the hinge seat of hinged rotor, and the center of hinge seat is provided with the installing hole of the hinge axis that passes the rotor centre bore.The locking breach that is positioned at the rotor arcuate perimeter is step or notch shape or plural ratchet-shaped.One end of rotor centre bore be provided with ccontaining help by locking element to the unblank stepped hole of spring of the torsional mode of the direction swing unblanked.

When locking element is a revolving part, be provided with the passage of unblanking that to dodge by the locking element rotor at its position of stretching into through part.Twist lock core with key, drive locking element deflection, the arcuate perimeter of rotor can enter the passage of unblanking of locking element, and the deflection of dead bolt generation clockwise makes the fetters and hand cuffs lock be opening.

When locking element is a moving member, be arranged at its position of stretching into through part with by the locking breach correspondingly-shaped of locking element rotor; Twist lock core with key, drive the locking element withdrawal, the locking breach of rotor can pass through through part, and the deflection of dead bolt generation clockwise makes the fetters and hand cuffs lock be opening.

Adopt the shackles type lockset of technical solution of the present invention compared with prior art to have following beneficial effect:

1. be plug tenon formula hinge between locking element and the lock body, be closely spaced by the arc groove of the rotor of locking element and lock body and be slidingly matched that the order sled tool of exchanging work can't stretch in the little gap of this circular arc and prizes locking element, so the safety of lockset is good.

2. fetters and hand cuffs locks has been installed annex or another fetters and hand cuffs locks such as locking bar, lock fork or latch hook or sleeve, can be flexibly two articles sports association be zip together; Again can be rigidly together locked object body support, hook, breech lock or zip.So applied widely, can be applied in multiple different occasion.

Description of drawings

Fig. 1 is the partial schematic sectional view of the lockup state of shackles type lockset embodiment 1 of the present invention;

Fig. 2 is the partial schematic sectional view of overlooking of Fig. 1;

Fig. 3 is the partial schematic sectional view of the unlocking condition of shackles type lockset embodiment 1 of the present invention;

Fig. 4 is the A-A sectional view of Fig. 3;

Fig. 5 is the partial schematic sectional view of the lockup state of shackles type lockset embodiment 2 of the present invention;

Fig. 6 is the partial schematic sectional view of the lockup state of shackles type lockset embodiment 3 of the present invention;

Fig. 7 is the B-B sectional view of Fig. 8;

Fig. 8 is the lockup state cross-sectional schematic of shackles type lockset embodiment 4 of the present invention;

Fig. 9 is the partial schematic sectional view of the lockup state of shackles type lockset embodiment 5 of the present invention;

Figure 10 is the partial schematic sectional view of the lockup state of shackles type lockset embodiment 6 of the present invention;

Figure 11 is the partial schematic sectional view of the lockup state of shackles type lockset embodiment 7 of the present invention;

Figure 12 is the partial schematic sectional view of the lockup state of shackles type lockset embodiment 8 of the present invention;

Figure 13 is the partial schematic sectional view of shackles type lockset embodiment 9 of the present invention;

Figure 14 is the partial schematic sectional view of overlooking of Figure 13;

Figure 15 is the partial schematic sectional view of shackles type lockset embodiment 10 of the present invention;

Figure 16 is the partial schematic sectional view of shackles type lockset embodiment 11 of the present invention.

The specific embodiment

Introduce specific embodiments of the invention below in conjunction with accompanying drawing.

Embodiment 1:

Referring to Fig. 1,2,3,4, Fig. 1 is the partial schematic sectional view of the lockup state of fetters and hand cuffs lock, and Fig. 2 is the vertical view of Fig. 1, and Fig. 3 is the partial schematic sectional view of the unlocking condition of fetters and hand cuffs lock, and Fig. 4 is the A-A sectional view of Fig. 3.

The head of lock body 5 is to be provided with the latch hook 51 of card around the side direction U-shaped opening of locked object body.The reverse side of the middle part of lock body 5 and U-shaped opening is provided with the installing hole 53 of lockable mechanism, and lockable mechanism comprises tapered end 3, lock core 31 and rotating locking element 2.Lock body 5 middle parts and U-shaped opening side in the same way are set to install the hinge seat 58A by the plug tenon formula hinge of the rotor 12 of locking element, are provided with the arc groove 52 that holds rotor 12 in the middle of the hinge seat 58A.

The center of the hinge seat 58A of the both sides of arc groove 52 is provided with the installing hole of hinge axis 11, hinge axis 11 passes the centre bore of rotor 12, the two ends of hinge axis 11 are riveted in the installing hole of hinge seat 58A, hinged by locking element and lock body 5, can be by dead bolt 1 and its rotor 12 of locking element around hinge axis 11 deflection in arc groove 52 of centre bore.The arcuate perimeter of rotor 12 is provided with locking element 2 can stop the locking breach 1A that is swung by locking element.Rotor 12 is closely spaced with arc groove 52 and is slidingly matched, and the order sled tool of exchanging work can't stretch in the little gap of this circular arc and prizes locking element.

The bottom of the installing hole 53 of lockable mechanism and the stage casing part of arc groove 52 run through, stretch into the end of the locking element 2 of this through part, under the effect of the flexible member of lockable mechanism, jam is in the locking breach 1A of the corresponding through part of rotor 12 arcuate perimeter of dead bolt 1 root, this moment rotor 12 outward extending dead bolt 1 just with the U-shaped closure of openings of lock body 5, the length of dead bolt 1 is suitable with the U-shaped A/F, the end of dead bolt 1 contacts with the end of latch hook 51, and the fetters and hand cuffs lock is lockup state.

Twist key 32, lock core 31 in the tapered end 3 drives locking element 2 deflections, when the passage 2A that unblanks of the arcs of recesses of locking element 2 ends goes to corresponding with the arcuate perimeter of rotor 12, the arcuate perimeter of rotor 12 just can enter in the passage 2A that unblanks of locking element 2, dead bolt 1 can be with rotor 12 clockwise deflections, leave the U-shaped opening of lock body 5, the fetters and hand cuffs lock is opening, as shown in Figure 3, Figure 4.

In order to allow dead bolt 1 at unlocking condition, can leave the U-shaped opening automatically springs open, end at the centre bore of rotor 12 is provided with Pear-Shaped stepped hole 13, the torsional mode spring 4B that unblanks is set in outside the hinge axis 11, be embedded in the Pear-Shaped stepped hole, the moving pin 41 of spring is embedded in the Pear-Shaped top in the stepped hole.The spring that is axial protrusion after the bending is decided pin 42 blocks and is decided in the pin mounting groove 55 at spring, and this groove is arranged on the hinge seat 58A inboard corresponding with the Pear-Shaped stepped hole of rotor 12.

The afterbody of lock body 5 is hollow shank of the keys 54, the installing hole 57 of the screw rod 61 at the bottom of wherein being provided with the sliding eye 56 of locking bar 6 and being positioned at the hole.The left side section of locking bar 6 is for having the hollow section 63 of internal thread, and screw rod 61 left parts are fixed in the installing hole 57, and locking bar 6 is by twisting its flexible scope with respect to lock body 5 of regulating on screw rod 61.The holding screw (not drawing among the figure) that the shank of the key 54 of lock body 5 radially is provided with can be fixing with the locking bar 6 that regulates distance.

The right-hand member of locking bar 6 can connect lock fork or latch hook or sleeve or another fetters and hand cuffs lock.The single fetters and hand cuffs lock that locking bar, lock fork or latch hook or sleeve have been installed then can be rigidly two locked object supports, hook, breech lock or contact zip together.

Embodiment 2:

Referring to Fig. 5, when dead bolt 1 the U-shaped closure of openings of lock body 5, fetters and hand cuffs locks is lockup state.With the difference of embodiment 1 be: the locking element 23 that can move back and forth, under stage clip 22 promotes, the through part of locking element 23 spaces and rotor 12 spaces is stretched in the end of its latch shape, and jam is in the locking breach 1A of the arcuate perimeter of dead bolt 1 root rotor 12.

Twist key 32, locking element 23 is return, and stage clip 22 is compressed, and under the effect of the spring 4B that unblanks, dead bolt 1 just can be with rotor 12 clockwise deflections, and the fetters and hand cuffs lock is unlocking condition.

The afterbody of lock body 5 both can have been made the structure similar to embodiment 1, also can make locking bar installing hole 56 as shown in Figure 5, and was fixing wherein locking bar 6.

Embodiment 3:

Referring to Fig. 6, with the difference of

embodiment

1 and 2 be: the side cut-away of rotary columniform locking element 2 is material partly, and forms the passage 2A that unblanks, and its space can hold the part of steel ball 21.

At the lockup state of fetters and hand cuffs lock, locking element 2 elastic deflections promote the space that steel ball 21 stretches into rotor 12, and jam is in the locking breach 1A of the arcuate perimeter of rotor 12, and this moment, dead bolt 1 was the U-shaped closure of openings of lock body 5.

Twist key 32, locking element 2 deflects, and the part of steel ball 21 falls into the passage 2A that unblanks, but dead bolt 1 just clockwise deflection unblank.

The afterbody of lock body 5 both can have been made and

embodiment

1 or 2 similar structures, also can make hinge seat 58 as shown in Figure 6, by bearing pin and chain or the with gemel locking bar formation link joint that passes pan 59A.

Embodiment 4:

Referring to Fig. 7,8, wherein, Fig. 8 is the sectional view of present embodiment, Fig. 7 is the B-B sectional view of Fig. 8.With the difference of the foregoing description be: will be designed to the shape of drawing a bow by the dead bolt 1 of locking element, the inboard of lock body 5 anterior latch hooks 51 is provided with the guide and limit groove 51A that can hold tortuous bow shape dead bolt 1 leading portion.

The rotor 12 of dead bolt 1 root is provided with plural ratchet 1A at the fastening place of itself and locking element 2, and the top of the locking element 23 that can move back and forth also is provided with corresponding ratchet.When dead bolt 1 during to the deflection of U-shaped opening direction, ratchet 1A promotes to move after locking element 2 is beated, and falls into next ratchet again under the effect of rear end stage clip 22, the effect that dead bolt 1 is produced by shelves locking.

Move after handling locking elements 2 by key 32, but this moment dead bolt 1 just clockwise deflection unblank.

The afterbody of lock body 5 both can have been made and

embodiment

1 or 2 similar structures, also can make the hinge seat 58 similar to embodiment 3.

Embodiment 5:

Referring to Fig. 9, the technical scheme that

previous embodiment

1,2,3,4 relates to can be applicable to present embodiment.Its main feature is: the afterbody of a lock body 5 is fixedlyed connected with the left part of locking bar 6, the right section of locking bar 6 and outside lock fork 7 flexible connections of opening.The top of lock fork 7 is provided with the installing hole 57 of screw rod 61 and the sliding eye 56 of locking bar 6, and the right section of locking bar 6 is tapped hollow section 63.Screw rod 61 right parts are fixed in the screw rod installing hole 57, and locking bar 6 is twisted on screw rod 61 just can regulate its flexible scope with respect to lock fork 7.Oral area side at locking bar sliding eye 56 is provided with holding screw 71, can the locking bar 6 that regulate distance is fixing.

Present embodiment can be used to support the object that lock two limits distance.For example that opening is outside lock fork 7 cards lean against the root of automobile hand brake bar, and fetters and hand cuffs lock handle speed change handle padlock support is in P shelves (automatic transmission vehicle), or push away the top gear (manual vehicle) of extension forward.Make the speed change handle can not return gear shift.

Embodiment 6:

Referring to Figure 10, with the difference of embodiment 5 be: the outside lock fork 7 of opening changes the inside latch hook 7A of opening into.Present embodiment can be used to the object of hook and zip two qualification distances.For example latch hook 7A is hooked automobile clutch or brake pedal, the fetters and hand cuffs snap close pins steering wheel, and pedal and steering wheel all can not be handled.

Embodiment 7:

Referring to Figure 11, the technical scheme that

previous embodiment

1,2,3,4 relates to can be applicable to present embodiment.Its main feature is: locking bar 6 can be a vertical bar shaped; Also can bend to concave-convex with the locked object form fit; Can also make crotch shape at its right-hand member.Present embodiment can be used to hook or the mobile relatively object of breech lock two.For example locking bar 6 is inserted in the handle or ox muzzle hole of door, the fetters and hand cuffs snap close pins another the handle or the ox muzzle, makes by locking bar 6 like the latch to fasten and can not open.Hooked locking bar then can interlock in the pull gate of fence shape together; Also possess simultaneously embodiment 6 described functions.

Embodiment 8:

Referring to Figure 12, the technical scheme that

previous embodiment

1,2,3,4 relates to can be applicable to present embodiment.Its main feature is: the cup-shaped sleeve 71 of the articulated thin-walled of the right-hand member of locking bar 6, this sleeve left end is provided with base 711.The step blind hole 714 on base 711 the right can be held the release button 81 of automobile hand brake handle 8; The ball-and-socket on base 711 left sides and ball-and-socket lid 712 to in-flanges, cover the left end of 712 compression fit at sleeve to base 711, bulb 713 and ball-and-socket by 71 mouthfuls of ends of sleeve after bulb 713 is contained.Circumferential rib 71B protrudes to the inwall of sleeve, block base 711 make its can not after move.The bulb handle 71A of bulb 713 left ends is packed in the right part of locking bar 6.

After the sleeve 71 of present embodiment entangled automobile hand brake handle 8, fetters and hand cuffs lock handle speed change handle padlock support was in P shelves (automatic transmission vehicle), or pushed away the top gear (manual vehicle) of extension forward.Parking brake can not be loosened, and the speed change handle can not gear shift.

Embodiment 9:

Referring to Figure 13,14, wherein, Figure 13 is the partial schematic sectional view of present embodiment, and Figure 14 is the partial schematic sectional view of overlooking of Figure 13.The technical scheme that

previous embodiment

1,2,3,4 relates to all can be applicable to present embodiment.Its main feature is: two lock bodies 5 connect relatively by locking bar 6, and an end and the lock body 5 of locking bar 6 are threaded, and the other end is the flexibly jointed chain that can swing by hinge and another lock body 5.

It is movable relatively and again not at the object on a plane that present embodiment is suitable for putting handcuffs on two on lock, and example is in locking vehicle steering and gear shift lever handcuffs, it checked and balance and can not independently moving.

Embodiment 10:

Referring to Figure 15, the technical scheme that

previous embodiment

1,2,3,4 relates to can be applicable to present embodiment.Its main feature is: two lock bodies 5 all are provided with hinge seat 58.The shank of the key of adjustable length is made of sliding tube 64, locking bar 6 and the screw rod 61 that the end is provided with flap 62.The left end of screw rod 61 is fixed in the screw rod installing hole 57 of sliding tube 64 bottoms, and locking bar 6 right-hand members are provided with flap 62, and the other end is provided with internal thread and the hollow section 63 with screw rod 61 couplings.In the sliding eye 56 of sliding tube 64, locking bar 6 can be twisted flexible to regulate length.Its adjusting is identical with embodiment 1 with fixed form.The flap 62 at the shank of the key two ends of sliding tube 64 and locking bar 6 combinations and the hinge seat 58 on two lock bodies are hinged by bearing pin 59, form the structure that is similar to universal joint.

It is movable relatively and again not on a plane that present embodiment is suitable for two on handcuffs lock, or tilt, or the object of distortion.Example is in locking vehicle steering and gear shift lever handcuffs, it checked and balance and can not independently moving.

Embodiment 11:

Referring to Figure 16, the technical scheme that

previous embodiment

1,2,3,4 relates to can be applicable to present embodiment.Its main feature is: two lock bodies 5 all be provided with the locking bar that there is a flap at 58, one sections chain 6A of hinge seat or two ends by bearing pin 59 two phase-locked connections of fetters and hand cuffs, form the structure that is similar to fetters and handcuffs.

The mark of the embodiment of the invention gathers as follows:

1. dead bolt, 1A. locking breach, 11. hinge axis, 12. rotors, 13. stepped holes;

2. locking element, the 2A. passage of unblanking, 21. steel balls, 22. stage clips, the 23. locking elements that can move back and forth;

3. tapered end, 31. lock cores, 32. keys;

The spring 4B. unblank, 41. springs move pin, and 42. springs are decided pin;

5. lock body, 51. latch hooks, 52. arc grooves, the installing hole of 53. lockable mechanisms, 54. shank of the keys, 55. springs are decided pin and are installed Groove, the sliding eye of 56. locking bars, the installing hole of 57. screw rods, the hinge seat of 58. afterbodys, the hinge seat of 58A. rotor, 59. Bearing pin, the pan of 59A. afterbody;

6. locking bar, 61. screw rods, 62. flaps, 63. hollow pipes, 64. sliding tubes, 6A. chain;

7. lock fork, 7A. latch hook, 71. sleeves, 711. bases, 712. ball-and-sockets lid, 713. bulbs, 714. step blind holes, 71A. The bulb handle, the 71B. circumferential rib;

8. brake handle, 81. discharge buttons.

Claims

1. shackles type lockset comprises:

The lock body (5) that has lockable mechanism,

Described lock body (5) is provided with the U-shaped opening of card around the locked object body,

Be equipped with on the described lock body (5) be used to seal the U-shaped opening by locking element;

It is characterized in that:

Described is tilting articulated between locking element and the lock body (5), and described lockable mechanism acts on by the hinged place of locking element, is used for restriction or release by the swing of locking element with respect to lock body (5).

2. shackles type lockset according to claim 1 is characterized in that:

The U-shaped opening of described lock body (5) is towards the side of lock body (5);

Describedly formed by the length dead bolt (1) suitable and the rotor (12) of dead bolt (1) root with the U-shaped A/F by locking element, be recessed in side with U-shaped opening lock body (5) in the same way by the rotor of locking element (12), be hinged on lock body (5) and go up and constitute plug tenon formula hinge;

Described lockable mechanism is installed in the lock body (5) with corresponding by the rotor of locking element (12), the installing hole of the locking element of lockable mechanism (2) runs through with being had by the recess of the rotor of locking element (12) lock body (5) in, and the position of described rotor (12) correspondence through part when dead bolt (1) sealing lock body (5) U-shaped opening is provided with locking breach (1A);

The spring of unblanking (4B) that acts on by between locking element and the lock body (5) is installed in the described lock body (5);

When being swung to the U-shaped opening of sealing lock body (5) by the dead bolt of locking element (1) (1), corresponding by the locking breach (1A) of the rotor of locking element (1) (12) with the locking element (2) of through part, locking element (2) falls into by in the locking breach (1A) of locking element (1), limited by the swing of locking element (1), the fetters and hand cuffs lock is lockup state.

3. shackles type lockset according to claim 2, it is characterized in that: the head of described lock body (5) is the latch hook (51) of U-shaped opening towards side, the middle part of described lock body (5) is provided with the arc groove (52) that is slidingly matched with rotor (12), the both sides of arc groove (52) are the hinge seat (58A) of hinged rotor (12), and the center of hinge seat (58A) is provided with the installing hole of the hinge axis (11) that passes rotor (12) centre bore; The described locking breach (1A) that is positioned at rotor (12) arcuate perimeter is step or notch shape or plural ratchet-shaped.

4. shackles type lockset according to claim 3 is characterized in that: an end of described rotor (12) centre bore be provided with ccontaining help by locking element to the unblank stepped hole (13) of spring (4B) of the torsional mode of the direction swing unblanked.

5. shackles type lockset according to claim 2 is characterized in that: described locking element (2) is a revolving part, is provided with the passage of unblanking (2A) that can dodge by locking element rotor (12) at its position of stretching into through part; Twist lock core with key, drive locking element (2) deflection, the arcuate perimeter of rotor (12) can enter the passage of unblanking (2A) of locking element (2), and clockwise deflection takes place dead bolt (1), makes the fetters and hand cuffs lock be opening.

6. shackles type lockset according to claim 2 is characterized in that: described locking element (2) is a moving member, be arranged at its position of stretching into through part with by locking breach (1A) correspondingly-shaped of locking element rotor (12); Twist lock core with key, drive locking element (2) withdrawal, the locking breach (1A) of rotor (12) can pass through through part, and clockwise deflection takes place dead bolt (1), makes the fetters and hand cuffs lock be opening.

7. shackles type lockset according to claim 2 is characterized in that: described is tortuous bow shape by the dead bolt of locking element (1), and the inboard of described latch hook (51) is provided with the gathering sill (51A) that can hold tortuous bow shape dead bolt (1) leading portion.

8. shackles type lockset according to claim 2 is characterized in that: the afterbody of described lock body (5) is provided with the linkage that connects locking bar (6) or chain (6A) or flap.

9. shackles type lockset according to claim 8 is characterized in that: described linkage is for regulating locking bar (6) with respect to the distance between the lock body (5) and the screw mechanism of corner.

10. shackles type lockset according to claim 8 is characterized in that: the other end of described locking bar (6) be connected with the inside latch hook (7A) of the outside lock of opening fork (7) or opening or with crotch or cup-shaped sleeve (71) or another lock body (5) of locking bar (6) one; The other end of described chain (6A) is connected with another lock body (5).