CN2763417Y

CN2763417Y - Safety shoe-shape lock for bicycle

Info

Publication number: CN2763417Y
Application number: CN 200520068624
Authority: CN
Inventors: 詹显光
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-01-24
Filing date: 2005-01-24
Publication date: 2006-03-08
Anticipated expiration: 2015-01-24

Abstract

The utility model relates to a bicycle horseshoe lock, particularly a bicycle horseshoe lock for avoiding the locking by accident. The safe bicycle horseshoe lock comprises a lock casing (1), a lock ring (2) provided with a locking gap, a tension spring (4), a lock brake (7), and a spanner (8), wherein the spanner (8) is fixedly connected with the lock ring (2). The utility model is characterized in that the spanner is provided with a rotary clamping member (82) and a resetting torsion spring (85) in a rotary form. A rotary shaft of the rotary clamping member (82) is arranged above a guiding slideway (6) of the lock casing (1) and is parallel to a plane on which the guiding slideway (6) is positioned. The rotary clamping member (82) is provided with a drive end and a locking end, and the resetting torsion spring (85) acts on the drive end. Under the state of unlocking targeting, the lock casing (1) corresponding to the locking end position of the rotary clamping member (82) is provided with a downwards concave clamping groove (9). After the unlocking targeting of the horseshoe lock, the locking end of the rotary clamping member (82) can be automatically clamped in the downwards concave clamping groove (9) for playing the safe action under the action of the resetting torsion spring (85). The horseshoe lock is similar to a locking state, is not influenced by poor conditions of roads, and effectively avoids the locking of the lock ring (2) by accident. Thus the horseshoe lock has better safety.

Description

A kind of safety type bicycle horseshoe lock

Technical field: the utility model relates to a kind of for bicycle horseshoe lock, particularly can prevent the bicycle horseshoe lock of mistake lock.

Background technology: standard bicycle with horseshoe lock usually by lock housing, be provided with the lock ring of locking gap, stop mechanism, extension spring, parts such as spanner are formed, extension spring, lock ring is slidably disposed in the lock housing, extension spring one end is fixed, the other end is connected with the inboard tail end of lock ring, lock housing is provided with guide chute, spanner one end passes guide chute fixedlys connected with lock ring, drive lock ring as long as press lower ejector lever along guide chute, the opening that makes the lock ring front end stride across lock housing enters the opposite side of lock housing, at this moment stop is stuck in the breach on the lock ring, the lock ring closure can't be opened reach the purpose of locking; Make stop break away from breach on the lock ring when inserting key unlocking, at this moment lock ring is withdrawn into and reaches the purpose of unblanking in the lock housing under the effect of tension spring tension.In actual the use, when bicycle is advanced, particularly after the long-term use of horseshoe lock, the extension spring ageing of performance, pulling force weakens, and jolts when being subjected to the external force effect or meeting the road uneven when riding, make lock ring mistake locking probably, cause bicycle can't move ahead suddenly, even make the cyclist injured.

The utility model content: the purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of bicycle horseshoe lock that can prevent lock ring mistake lock is provided.

The utility model is to achieve the above object by following technical solution: safety type bicycle horseshoe lock, comprise lock housing, be provided with the lock ring of locking gap, extension spring, stop and spanner, spanner is fixedlyed connected with lock ring, it is characterized in that: be provided with rotation fastener and reduction torsion spring on the described wrench rotationally, the rotation fastener rotating shaft be arranged on the lock housing guide chute the top and with guide chute place plane parallel, described rotation fastener has a drive end and a buckle end, reduction torsion spring acts on the drive end, under the state of putting in place of unblanking on the described lock housing corresponding rotation fastener buckle end position be provided with recessed draw-in groove.

Adopt technique scheme: horseshoe lock of the present utility model is after unblanking to put in place, the buckle end of rotation fastener is under the reduction torsion spring effect, automatically be stuck in the recessed draw-in groove and play safety effect, be similar to locking state, not being afraid of the road hollow jolts, effectively prevented lock ring mistake locking, therefore safety has preferably been arranged.

The utility model is described in further detail below in conjunction with accompanying drawing, and provide embodiment.

Description of drawings:

Accompanying drawing 1 is the utility model specific embodiment schematic appearance;

Accompanying drawing 2 is a specific embodiment internal construction schematic diagram;

Accompanying drawing 3 is a spanner example structure sectional view.

Specific embodiment: as Fig. 1, shown in 2, horseshoe lock still has lock housing 1, base plate 3, tapered end 5, lock ring 2, stop 7, extension spring 4, spanner 8 members such as grade, lock housing 1 is fixed on the base plate 3, extension spring 4, lock ring 2 is slidably disposed in the lock housing 1, extension spring 4 one ends are fixed, the other end is connected with lock ring 2 inboard tail ends, lock housing 1 is provided with guide chute 6, as shown in Figure 3, wherein spanner 8 comprises fixed cover 81, rotation fastener 82, bearing pin 83 and pin 84, fixed cover 81 is one section cylindrical component with the above face of cylinder of half cycle, the center of circle, the face of cylinder is provided with axial pin-and-hole, pin 84 1 ends are vertically inserted solid on lock ring 2, fixed cover 81 axis and pin 84 axis are fixed on the other end of pin 84 perpendicularly, make fixed cover 81 axis be in lock housing 1 guide chute 6 the top and with guide chute 6 place plane parallel, rotation fastener 82 cross sections are " U " shape, be drive end on one side, another side is the buckle end, the buckle end is longer than drive end, the inner concave and fixed cover 81 faces of cylinder match, rotation fastener 82 inner concaves middle part is integrally formed with the plectane identical with concave, the plectane center of circle is provided with the circular shaft hole that matches with bearing pin 83, the middle part, the face of cylinder of fixed cover 81 is provided with the transversal grooving that matches with described plectane, the plectane of rotation fastener 82 inner concaves be inserted in fixed cover 81 transversal grooving in, and pass pin-and-hole and the circular shaft hole is rotatably connected on the fixed cover 81 by bearing pin 83, the dead in line on the bearing pin 83 and fixed cover 81 faces of cylinder, also be arranged with reduction torsion spring 85 on the bearing pin 83, reduction torsion spring 85 1 ends are against the drive end of rotation fastener 82, unblank under the state of putting in place, corresponding rotation fastener 82 buckle end positions are provided with recessed draw-in groove 9 on the lock housing 1, want more than the half cycle on the face of cylinder of fixed cover 81, preferably can reach about 220～250 degree, make rotation fastener 82 can have enough anglecs of rotation to allow the buckle end break away from from recessed draw-in groove 9, it is preferably vertical with guide chute 6 line of travel that fixed cover 81 axis promptly rotate fastener 82 rotations, and when unblanking, make draw-in groove 9 and buckle end be in the front portion of spanner 8, the buckle end leans against fixed cover 81 bottoms, like this under the state of putting in place of unblanking, prevent from do not rotating fastener 82, the buckle end breaks away from draw-in groove 9 from rear side.

When inserting key unlocking, at this moment lock ring 2 is withdrawn in the lock housing 1 under the effect of extension spring 4 pulling force, and after unblanking to put in place, the buckle end of rotation fastener 82 is stuck in automatically in the recessed draw-in groove 9 and plays safety effect under reduction torsion spring 85 effects; Before locking, pinch rotation fastener 82 and rotation and allow the buckle end break away from from recessed draw-in groove 9, press lower ejector lever 8 drive lock rings 2 along guide chute 6 then, the opposite side that the opening that makes lock ring 2 front ends stride across lock housing 1 enters lock housing 1 is finished and is locked.

Claims

1, a kind of safety type bicycle horseshoe lock, comprise lock housing (1), be provided with the lock ring (2) of locking gap, extension spring (4), stop (7) and spanner (8), spanner (8) is fixedlyed connected with lock ring (2), it is characterized in that: be provided with rotation fastener (82) and reduction torsion spring (85) on the described wrench rotationally, the rotation fastener (82) rotating shaft be arranged on lock housing (1) guide chute (6) the top and with guide chute (6) place plane parallel, described rotation fastener (82) has a drive end and a buckle end, reduction torsion spring (85) acts on the drive end, and described lock housing (1) goes up corresponding rotation fastener (82) buckle end position and is provided with recessed draw-in groove (9) under the state of putting in place of unblanking.

2, safety type bicycle horseshoe lock according to claim 1 is characterized in that: the rotating shaft of described rotation fastener (82) is vertical with guide chute (6) line of travel.

3, safety type bicycle horseshoe lock according to claim 1 and 2, it is characterized in that: described wrench comprises fixed cover (81), bearing pin (83) and a pin (84) with the above face of cylinder of half cycle, described pin (84) one ends are vertically inserted solid on lock ring (2), fixed cover (81) axis and pin (84) axis are fixed on the other end of pin (84) perpendicularly, described rotation fastener (82) cross section is " U " shape, inner concave and fixed cover (81) face of cylinder matches, and is rotatably connected on the fixed cover (81) by bearing pin (83).