CN2131943Y

CN2131943Y - Theft-proof lock for bicycle

Info

Publication number: CN2131943Y
Application number: CN 92231056
Authority: CN
Inventors: 左庆华
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-08-07
Filing date: 1992-08-07
Publication date: 1993-05-05
Anticipated expiration: 2002-08-07

Abstract

The utility model relates to a theft-proof lock for a bicycle. The T-shaped end of a cylinder-shaped lock bolt is clamped into the clamping head of a lock bolt at one open end of a U-shaped lock body for locking, and the other end of the lock bolt is locked with a spring lock fixed on the other open end of the U-shaped lock body. The other end of the lock bolt is provided with a lock bolt sleeve, and the lock bolt can be reelingly clamped into a clamp spring and fixed on the lock body after pulled from the clamping head of the lock bolt. The lock bolt is not revealed and adopts two-end locking, so the utility model has little possibility of wringing off a lock pin in radial direction, and is safe. Because the lock bolt can be folded toward the lock body after pulled, the theft-proof lock for a bicycle is beautiful and does not occupy space.

Description

Theft-proof lock for bicycle

The utility model is a kind of anti-theft lock for bicycle.

The general bicycle lock of selling on the market is to adopt the pintle hook lock locking, but its intensity is little, and the lock body iron sheet is too thin, and rivet is with to pry open direction consistent, so easily pry open; A kind of bolt type lock is arranged in addition, can only lock one, its locking bolt exposes, and movable position is too much, and mechanism is too complicated, easily turns on, and the back locking bolt of unblanking plays downwards, and the position that takes up space is big, and not attractive in appearance.

The purpose of this utility model is that a kind of locking bolt of design does not expose, and the locking of locking bolt two is difficult for breaking, pries open, turns on, and anti-theft lock for bicycle simple in structure, attractive in appearance.

The technical scheme that realizes the utility model purpose is, have " fourth " font dop on locking bolt one end of bar shape, hole shape matches in the lock body dop on this dop and U-shaped lock body one openend, and locking bolt band " fourth " font dop one end inserts back half-twist locking in the locking bolt dop in the locking bolt dop; Be fixed with the lock core box and the lock bolt sleeve of a cylinder lock on another openend of U-shaped lock body, the other end of locking bolt is packed in the lock bolt sleeve, with pin " Г " shape gathering sill and lock bolt sleeve on the locking bolt are fixed, this gathering sill can be on pin move left and right and positioning of rotating; Be contained in the lock core in the lock core box, the lock pin on its cam pin passes the hole on lock core box and the lock bolt sleeve, inserts on the locking bolt to lock in the hole in the gathering sill; Be fixed with the locking bolt draw ring in pack into the termination of lock bolt sleeve one end of locking bolt; Be fixed with the locking bolt jump ring on lock body, rotation snaps in this jump ring and fixes after locking bolt is pulled out from the locking bolt dop, does not take up space.

Fig. 1 is a structural representation of the present utility model; Fig. 2 is the elevation of locking bolt; Fig. 3 is the vertical view of Fig. 2.

Describe structure of the present utility model and using method in detail below in conjunction with accompanying drawing.

Lock body 9 is a U-shaped, locking bolt 1 is a bar shape, be preferably cylinder, the dop that has " fourth " font on one end of locking bolt 1, hole shape matches in the locking bolt dop 3 on the openend of this dop and lock body 9, after " fourth " font dop inserts in the locking bolt dop 3, and half-twist locking in locking bolt dop 3, locking bolt dop 3 can be processed into a part separately, is welded on this termination of lock body 9; On another openend of lock body 9, be fixed with the lock core box 6 and the lock bolt sleeve 2 of cylinder lock, can adopt welding fixing, the other end of locking bolt 1 is packed in the lock bolt sleeve 2, locking bolt 1 is not exposed, and is that symmetry has two " Г " shape gathering sills with the center line on locking bolt 1, shown in Fig. 2,3, two pins 10 with symmetry are fixed on this two gathering sill on the lock bolt sleeve 2, make the locking bolt 1 can be along pin 10 move left and right and rotation, and locking bolt 1 is when rotating in locking bolt dop 3, gathering sill can rotate along pin 10; On lock body 9, be fixed with locking bolt jump ring 7, after locking bolt 1 is pulled out, can snap in location in the locking bolt jump ring 7 from locking bolt dop 3, as shown in Figure 1 around pin 10 rotations; Have groove on the lock bolt sleeve 2, not influencing locking bolt 1 moving and positioning of rotating in lock bolt sleeve 2, pull out from locking bolt dop 3 when snapping in the locking bolt jump ring 7 when locking bolt 1, " fourth " font dop on the locking bolt 1 just snaps in the lock bolt sleeve 2 fixing; Locking bolt 1 is inserted on the termination of lock bolt sleeve 2 and is fixed with locking bolt draw ring 8, and as the handle of opening lock, locking bolt draw ring 8 is an open type, to prevent to twist off lock pin 4; The lock core of cylinder lock is contained in the lock core box 6, and lock core lid 11 buckles in the lock core box 6, and the connecting portion that passes lock core box 6 and lock core lid 11 with rivet 12 rivets; On the cam pin of lock core, be fixed with a lock pin 4, lock pin 4 is the thin circular pegs of the thick end of an end, have an aperture on the thick end, the cam pin of lock core inserts in this hole, be with spring 5 on the thin end, stretch out the aperture of thin end from lock core box 6 of lock pin 4, pass the circular hole on the lock bolt sleeve 2, when locking bolt 1 snaps in the locking bolt dop 3 locking, just insert and make locking bolt 1 locking on the locking bolt 1 in the hole in the gathering sill.

Using method: hold locking bolt draw ring 8 with left hand when locking, one end of locking bolt 1 band " fourth " font dop is pushed in the locking bolt dop 3, with locking bolt 1 clockwise direction half-twist, this moment, locking bolt 1 snapped in locking in the locking bolt dop 3, the right hand rotates key to counter clockwise direction, the eccentric lock pin 4 that drives of lock core moves, and just in time inserts in the circular hole in locking bolt 1 gathering sill, and two ends, locking bolt 1 left and right sides are locked; During unlatching, key is inserted in the lockhole, because the effect of spring 5, the circular hole that lock pin 4 is broken away from the locking bolt 1, the automatic clockwise direction rotation of key this moment, left hand is held locking bolt draw ring 8 to the counter clockwise direction half-twist, locking bolt 1 is pulled out and rotated push in the locking bolt jump ring 7 from locking bolt dop 3, " fourth " font dop on the locking bolt 1 just in time snaps in the lock bolt sleeve 2, and locking bolt 1 is fixing.

Therefore the utility model is difficult for radially being twisted off lock pin by instruments such as pliers because locking bolt does not expose; Can be folded to lock body after locking bolt is pulled out and fix, therefore both attractive in appearance, do not take up space again; Locking bolt adopts two locking, so safe and reliable; Lock core is packed in the lock core box, and the lock core lid adopts internal fastening type, rivet is passed the connecting portion of lid and lock core box, so lid is difficult for prying open.

Claims

1, a kind of anti-theft lock for bicycle, it is characterized in that having " fourth " font dop on locking bolt 1 one ends of column, the locking bolt dop 3 interior hole shapes that are somebody's turn to do on " fourth " font dop and U-shaped lock body 9 one openends match, and half-twist locked after locking bolt 1 band " fourth " font dop one end inserted in the locking bolt dop 3; Be fixed with the lock core box 6 and the lock bolt sleeve 2 of cylinder lock on another openend of U-shaped lock body 9, the other end of locking bolt 1 is packed in the lock bolt sleeve 2, with pin 10 that " Γ " the shape gathering sill on the locking bolt 1 and lock bolt sleeve 2 is fixing, this gathering sill can move left and right and rotation on pin 10; Be contained in the lock core in the lock core box 6, the lock pin 4 on its cam pin passes the circular hole on lock core box 6 and the lock bolt sleeve 2, inserts in the hole in locking bolt 1 gathering sill to lock; Be fixed with locking bolt jump ring 7 on lock body 9, pack into this end of lock bolt sleeve 2 of locking bolt 1 is fixed with locking bolt draw ring 8.

2, anti-theft lock for bicycle as claimed in claim 1 is characterized in that " Г " shape gathering sill on the said locking bolt 1 is that center line with locking bolt 1 is that symmetry has two " Г " shape gathering sills.

3, anti-theft lock for bicycle as claimed in claim 1 is characterized in that spiral-lock has lock core lid 11 on the said lock core box 6, and the connecting portion that passes lock core box 6 and lock core lid 11 with rivet 12 rivets.

4, anti-theft lock for bicycle as claimed in claim 1 is characterized in that said locking bolt draw ring 8 is open type.