CN2763418Y - Safety shoe-shape lock - Google Patents

Abstract

The utility model relates to a safety horseshoe lock for avoiding the error locking, which comprises a lock casing (1), a lock ring (2), an extension spring (4), a lock brake (7), and a spanner, wherein the spanner comprises a spanner (8), a return spring (13), and a rotary clamping member (12) rotatablely arranged on the spanner (8), wherein the rotary clamping member (12) is provided with a drive end (12-1) and a locking end (12-2), and the return spring (13) acts on the drive end (12-1). When the lock is turned to the proper position, the position corresponding to the locking end (12-2) of the rotary clamping member (12) on the locking casing (1) is provided with a gap or a downwards concave clamping groove (9). After the horseshoe lock is turned to the proper position, the locking end (12-2) of the rotary clamping member (12) can automatically clamp in the downwards concave clamping groove (9) for playing the safety action under the action of a return spring (13). The horseshoe lock is similar to a locking state, is not influenced by poor conditions of roads, and effectively avoids the error locking of the lock ring (2). Thus the horseshoe lock has better safety.

Description

A kind of safety type 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of locking; Make stop break away from breach on the lock ring when inserting key unlocking, at this moment lock ring is withdrawn into and reaches the purpose of unblanking in the lock housing under the effect of tension spring tension.In actual the use, when bicycle is advanced,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, and makes lock ring mistake locking probably, cause bicycle can't move ahead suddenly, even it is injured that the cyclist is fallen down.

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: a kind of safety type horseshoe lock, comprise lock housing, lock ring, extension spring, stop and spanner, it is characterized in that: described wrench comprises wrench body, back-moving spring and rotation fastener, wrench body is fixedlyed connected with lock ring by pin, the rotation fastener is arranged on the wrench body by bearing pin rotationally, the rotation fastener bearing pin 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, action of reset spring on 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 breach or 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 action of reset spring, automatically be stuck in breach or 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, be provided with the lock ring 2 of locking gap, stop 7, extension spring 4, members such as spanner, 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 fixedly in the lock housing 1, 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 comprises wrench body 8, back-moving spring 13 and rotation fastener 12, pin 10 1 ends pass guide chute 6 vertical inserting admittedly on lock ring 2, as shown in Figure 3, wrench body 8 is fixed on the other end of pin 10, wrench body 8 surfaces are provided with connected in star 14, rotation fastener 12 shapes and connected in star 14 are suitable and be arranged on rotationally in the connected in star 14 by bearing pin 11, the upper end is drive end 12-1, the lower end was grown wrench body 8 and was exposed, be buckle end 12-2, unblanking under the state of putting in place, corresponding rotation fastener 12 buckle end 12-2 positions are provided with breach or recessed draw-in groove 9 on the described lock housing 1, bearing pin 11 two ends are fixed on the sidewall of connected in star, the bearing pin 11 of rotation fastener 12 is vertical with pin 10, and it is parallel with guide chute 6 line of travel, also can with vertical setting of guide chute 6 line of travel, when with vertical setting of guide chute 6 line of travel, buckle end 12-2 should be in the place ahead of sliding of wrench body 8 when locking, buckle end 12-2 leans against the fixed cover bottom, like this under the state of putting in place of unblanking, prevent when the drive end 12-1 that does not have down by rotation fastener 12, buckle end 12-2 breaks away from draw-in groove 9 from rear side, corresponding drive end 12-1 below is provided with spring storage chamber on the wrench body 8, described back-moving spring 13 places spring storage chamber, back-moving spring 13 upper ends are against and make buckle end 12-2 that the power to breach or recessed draw-in groove 9 is arranged all the time on the drive end 12-1, gapped between connected in star bottom land and the rotation fastener 12, particularly drive end 12-1 one side will leave enough down to the space, can allow buckle end 12-2 break away from from breach or recessed draw-in groove 9 down by the drive end 12-1 of rotation fastener 12 time.

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 12-2 of rotation fastener 12 is stuck in automatically in the recessed draw-in groove 9 and plays safety effect under back-moving spring 13 effects; Before locking, buckle end 12-2 is broken away from from breach or recessed draw-in groove 9, then along 6 times no good hand-motion lock rings 2 of guide chute, 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 (4)

1, a kind of safety type horseshoe lock, comprise lock housing (1), lock ring (2), extension spring (4), stop (7) and spanner, it is characterized in that: described wrench comprises wrench body (8), back-moving spring (13) and rotation fastener (12), wrench body (8) is fixedlyed connected with lock ring (2) by pin (10), rotation fastener (12) is arranged on the wrench body (8) rotationally by bearing pin (11), the rotation fastener (12) bearing pin (11) be arranged on lock housing (1) guide chute (6) the top and with guide chute (6) place plane parallel, described rotation fastener (12) has a drive end (12-1) and a buckle end (12-2), back-moving spring (13) acts on the drive end (12-1), and described lock housing (1) goes up corresponding rotation fastener (12) buckle end (12-2) position and is provided with breach or recessed draw-in groove (9) under the state of putting in place of unblanking.

2, safety type horseshoe lock according to claim 1, it is characterized in that: described pin (10) one ends are connected with lock ring (2) vertical fixing, wrench body (8) is fixed on pin (10) other end, described wrench body (8) surface is provided with connected in star (14), rotation fastener (12) shape and connected in star (14) is suitable and be arranged on rotationally in the connected in star (14) by bearing pin (11), the upper end is drive end (12-1), expose the lower end, be buckle end (12-2), wrench body (8) goes up corresponding drive end (12-1) below and is provided with spring storage chamber, described back-moving spring (13) places spring storage chamber, and back-moving spring (13) upper end is against on the drive end (12-1).

3, safety type horseshoe lock according to claim 2 is characterized in that: the bearing pin (11) of described rotation fastener (12) is vertical with pin (10) and guide chute (6) line of travel.

4, safety type horseshoe lock according to claim 2 is characterized in that: the bearing pin (11) of described rotation fastener (12) is vertical with pin (10), and is parallel with guide chute (6) line of travel.

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