CN2492449Y

CN2492449Y - Lock for locking steering mechanism for bicycle

Info

Publication number: CN2492449Y
Application number: CN 01246368
Authority: CN
Inventors: 岑迪庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-07-05
Filing date: 2001-07-05
Publication date: 2002-05-22
Anticipated expiration: 2011-07-05

Abstract

The utility model relates to the technical field of the head lock of the car, which is designed for preventing the stealing. The utility model comprises a lock body; wherein, a lock core and a retractable pin that can rotate along with the lock core are arranged inside the lock body, which is characterized in that the lock body is a metal block enclosed on the upper steel bowl, a small pin that is matched with a positioning sliding groove inside the metal block is arranged on the outer surface of the lock core inside the metal block, the inner wall of a fixed hole correspondently fixing the metal block on the upper steel bowl and the wall of the upper steel bowl are provided with a pin hole that is supplied for the plugging in and drawing out of the pin connecting the lock core; in addition, a spline upper block is fixed on a pipe of the frame rod, a spline on the outer surface of the spline upper block can be matched with the pin to lock the pipe of the frame rod. The utility model has the advantages of favorable anti-theft performance, simple structure and easy manufacturing, which is suitable to be applied to the bicycle.

Description

Head lock

Technical field

Thereby the utility model relate to a kind of use with bicycle, three-wheel vehicle on lock headstock and prevent the head lock technical field of stealing.

Background technology

China is bikedom, but the bicycle steal phenomenon is still very serious in some city, be used for locking the lockset cable-type padlock of bicycle on the particularly present bicycle, chain lock, the spring lock theftproof performance is very poor, be easy to allow the thief become, many scientific and technical personnel are arranged for this reason to bicycle, the anti-theft column lock of three-wheel vehicle has carried out technological improvement, as the patent No. is the Chinese patent " head lock " of 91213657.X, it is by lock body, tapered end, dead bolt, screw, plug is formed, tapered end and dead bolt are contained in the lock body, its axis is orthogonal, there is an eccentric pin tapered end upper lock core inner end, dead bolt is a cylinder, there is a groove its inner end, and straight pin is embedded in the groove and can slides in groove, during installation lock body sheath is screwed on the inclined tube of following yard mouthful of eyebrow beam tube.Use key rotation lock core, dead bolt is stretched out, lock in the hole of pipe on eyebrow beam tube and the front fork and the tap of bicycle or three-wheel vehicle can not be rotated, bicycle or three-wheel vehicle can not be ridden or carry out, have simple in structure, firm and durable, easy to use, pick-proof, advantage such as inexpensive.To be lock body adopt screw to be connected with the vehicle frame fixed installation to its shortcoming, and block with plug and to prevent that stealer from dismantling lock body by turning screw, thereby make lockset lose theftproof performance.As the patent No. is 95205512.0 Chinese patent " head lock ", it is characterized in that: by the lock control assembly with turn to clutch component to constitute; The lock control assembly is made of key, lock body, chute, locking bolt; Turn to clutch component by overcoat, slide block, steering tube, tiltedly nut, screw, spring, shape of a hoof key, ball, hold up cover, gland, dowel disc, spacing card constitutes; The inwall of overcoat is welded with slide block, and it is a bar shaped garden arcuation, and the bottom is the wedge key, and middle side has opening, in last positioning groove and following positioning groove are arranged; When the interior ball grooves of overcoat is relative with the outer ball grooves of steering tube, fill ball by straight trough; The wedge key of slide block, the straight key looping zero-clearance transmission on shape of a hoof key and steering tube top; The straight key of steering tube is rotated away from the breach that the wedge key enters dowel disc; Spacing card is installed on the steering tube, and its garden shape fork is on the beam of bicycle, and its protruding keyed jointing is contained in the centre of the concave arc of overcoat.Its shortcoming is complex structure, be not easy production and assembly.

Summary of the invention

The purpose of this utility model is not easy to be prized with regard to being to provide a kind of at above-mentioned prior art present situation, theftproof performance is good, simple in structure, the convenient head lock of manufacturing.

The purpose of this utility model is achieved in that this kind head lock, it includes lock body, be equipped with lock core in the lock body and rotate retractable pin with lock core, it is characterized in that lock body is for being enclosed within derby on the upper steel bowl, the lock core outside face has the little pin that cooperates with positioning runner in the derby in the derby, accordingly derby is fixed on the fixed orifice inwall on the upper steel bowl, the upper steel bowl wall has for lock core bonded assembly pin and stretches into the pin-and-hole that stretches out, other has on the spline that is fixed on vehicle frame rod tube and keeps off, on the spline retaining outside face keyway can with stretch into the pin that stretches out and cooperate and lock vehicle frame rod tube.

Compared with prior art, advantage of the present utility model is that this head lock adopts socketing method to be fixed on the upper steel bowl, and pin inserts in the spline upper blocking key groove in the lock core, so joyriding is difficult to beat way by sled and dismantles lockset, so safety is better, and structure design is more reasonable, production and assembly easily, cost is low, is adapted at promoting the use of on bicycle, the three-wheel vehicle.

Description of drawings

Fig. 1 head lock structure cutaway view;

Fig. 2 head lock structure birds-eye view;

Fig. 3 derby structure partial cutaway view.

The specific embodiment

Below in conjunction with description of drawings embodiment of the present utility model is described in further detail.

Anticipate as shown in the figure, this kind head lock, adopt a derby as lock body, production and assembly for convenience, the derby of its lock body is divided into metal ring set 10 and metal lock housing 11, in the middle of the metal ring set 10 is fixed orifice, can be enclosed within on the upper steel bowl 12 and be connected and fixed as flush fit, one side has dovetail furrow and metal lock housing 11 is carried out socket connection, metal lock housing 11 is opened lock core cavity in the lock body, in be equipped with lock core 8, lock core 8 surfaces have that positioning runner 5 cooperates the location in little pin and the derby, welding covers a metal sheet above, the fixed orifice inwall of derby on upper steel bowl, the upper steel bowl wall has pin-and-hole, lock core 8 one ends are connected with pin 7, its pin rotates with lock core, and under derby positioning runner 5 and little pin effect, can in above-mentioned pin-and-hole, stretch into and stretch out, other has on the spline that is fixed on the upper steel bowl 12 inner integument framves 14 and keeps off 13, its outside face has 8 keyways, inside face is that screw thread and vehicle frame rod tube are flush fit and are connected and fixed, on the spline retaining outside face spline again can with stretch into the pin 7 that stretches out and cooperate and lock vehicle frame rod tube.In order to increase on the spline fixedly strength of retaining and vehicle frame rod tube, be pressed with above the retaining 13 on the spline and be with tooth locking plate 6, cover cover of dust 4, with nut 1, locknut 2, pad 3 they are fixed again.

Its principle of work is as follows, in the lock core that people insert correct key 9 on the lock body, at this moment lock core can rotate, under the effect of hand push power, little pin slides along the positioning runner in the derby on the lock core, pin on the lock core end stretches out pin-and-hole, cooperate with the keyway that keeps off on the spline, handlebar on locking vehicle frame rod tube, at this moment contrarotation key again makes little pin block the location in positioning runner, extract key then, in the time will opening head lock, key is inserted in the lock core on the lock body, then can the counter-rotation lock core, withdraw from lock core a little, make the pin on the lock core end withdraw from pin-and-hole, retaining loses limitation locking on the spline like this, and headstock can rotate again.

Claims

1, a kind of head lock, it includes lock body, be equipped with lock core (8) in the lock body and rotate retractable pin (7) with lock core, it is characterized in that lock body is for being enclosed within derby on the upper steel bowl, the lock core outside face has the little pin that cooperates with positioning runner (5) in the derby in the derby, accordingly derby is fixed on the fixed orifice inwall on the upper steel bowl (12), the upper steel bowl wall has for lock core bonded assembly pin and stretches into the pin-and-hole that stretches out, other has on the spline that is fixed on vehicle frame rod tube retaining (13), on the spline retaining outside face keyway can with stretch into the pin (7) that stretches out and cooperate and lock vehicle frame rod tube.

2, head lock as claimed in claim 1, it is characterized in that retaining (13) is on upper steel bowl (12) inner integument frame (14) on the described spline, having screw thread to be flush fit with vehicle frame rod tube inside it is connected, be pressed with band tooth locking plate (6) above, cover cover of dust (4), use nut (1), locknut (2), pad (3) that they are fixed again.

3, head lock as claimed in claim 1, it is characterized in that described derby (11) is divided into metal ring set (10) that is placed in upper steel bowl (12) outside and the metal lock housing (11) that lock core is installed, metal ring set (10) has dovetail furrow and metal lock housing (11) socket connection.