CN2292734Y - Theftproof device for bicycle - Google Patents

Abstract

The utility model relates to a theftproof device for a bicycle, which is composed of a plug box, a plug arranged in the box, a lock core weight, and a plug protection sleeve, wherein, the plug box is formed by welding a housing and a housing into a whole. The utility model is characterized in that the lock core weight arranged on a convex platform of the housing is composed of two lock cores which are connected with each other through convex-concave clamp structures arranged on two lock core bodies. When the utility model is operated, only one lock core is locked and unlocked, and the other lock core only performs the actions of fixation and repair; when one lock core is damaged or a key is lost, the other lock core can be unlocked; meanwhile, the two lock cores can be taken out by utilizing the function of the convex-concave clamps, and the lock cores are convenient to repair or replace. The housing of the utility model is in an integral structure. The utility model has the advantages of simple structure, long service life and low cost.

Description

A kind of theft-proof device for bicycle

The utility model relates to a kind of anti-joyride device that is used for bicycle.

At present, though the anti-theft lock for bicycle on the market is varied, can both be pried open or be cut off, the stolen phenomenon of bicycle is still very serious, and " new car dare not be bought, and buying car dare not be ridden " become people's a worry.

The purpose of this utility model: a kind of theft-proof device for bicycle is provided, in order to stop the robbed or burgled phenomenon of bicycle, guarantees that people are relieved with car, thereby increase the sales volume of manufacturer.

The purpose of this device is achieved in that this device has shell, bolt box, bolt, lock core steelyard, bolt sheath, flat thin magnet and blister pack.The constructional feature and the effect of this device are: 1. lock core steelyard is made up of two lock cores, be welded with embossed card on the lock core ectosome, two lock cores are blocked be one, a lock core top is provided with the gear that a periphery has tooth, gear center is provided with radius stay, and another lock core top is provided with a right angle crampons.The effect of hook lock core is arranged: the one, can will control oneself is fixed in the device, and the 2nd, be convenient to maintenance and change lock core.2. bolt is a metal cuboid.The bolt bottom surface is provided with a long tooth bar, and there is an oblong breach on the bolt base, and there is segment length side's body space in bolt back side bottom, the effect in this section space: it is necessary to be that crampons hooks embolus.Bolt front right part has the metal cuboid of a projection.3. the bolt box is a hollow box body in four sides.Box body front left part has a semicircle breach and an oblong breach.The box body front inside wall is provided with one section groove, its effect: the one, and after matching with the metal cuboid of bolt front right-hand member projection, bolt is steadily moved in the bolt box; The 2nd, the restriction bolt does not all break away from box body.4. shell be one the casting or with the pentahedron that the block of metal plate is stamped to form, also claim five halfbody betal cans.Be provided with a flat thin magnet in the shell right flank, its effect: when the bolt Caudad moves to right to the top, can hold the bolt tail, avoid bolt to beat with the car vibration.Position, outer casing frontispiece lower-left is provided with an ellipsoid boss, its effect: two lock cores are limited in together.5. the bolt sheath is a pentahedron betal can, its effect: during the lock car, bolt is pushed in the sheath, make bolt firm.6. blister pack.Ellipsoid boss on its shape, size and the shell is close, and a lock core hole is only stayed in the front, and another lock core hole is covered; Its effect: protection has the lock core of the right angle crampons water of not drenching with rain.

Erection procedure: the bolt box of earlier bolt being packed into, then in the enclosure with the welding of bolt box, again with the back side welding of shell or punching press in a support of bicycle Vee formation frame, welding of bolt sheath or punching press are supported at another root of bicycle Vee formation frame.Two lock core cards are inserted in the lock core steelyard hole of shell projection after good simultaneously, rotate the lock core that hook is arranged, the bottom that makes the hook of its tail end hook bolt pins down two lock cores and all can not pull out from the lock core steelyard hole.So far, whole device assembles.

The advantage of this device: 1. good anti-theft effect.The shell of this device adopts integral plate punching press or casting to form, and is welded on the vehicle frame, can't pry open or lay down.And it is consistent that the paint tone of Che Yusuo, pictorial trademark reach, and more given full play to the globality effect of device.2. easy to maintenance.Whole device only need keep in repair or change lock core, when the lock core of gear is damaged or loses key, can open the lock core of crampons, hook is rotated and break away from the bottom of bolt, utilize the function of embossed card, simultaneously two lock cores are taken out, promptly can repair or change.When the either a corrupted or missing key of lock core of crampons, can open cogged lock core, mobile again bolt, the oblong breach of bolt bottom is alignd with the oblong breach of bolt box bottom, twitch cogged lock core then, utilize the function of embossed card again, take out two lock cores simultaneously.3. easy to operate, no matter unblank or shut, all only need to rotate a lock core, promptly tail end is provided with the lock core of gear, when key turns gear when and then rotation makes the bolt head go into the bolt sheath, just in time extracts key out, and promptly lock shuts.When the key turns gear and then rotates and when making bolt get back to the bolt box, promptly to lock openedly, bicycle can be walked.

Introduce an embodiment below in conjunction with accompanying drawing:

Fig. 1 is an integral structure scheme drawing of the present utility model.

Fig. 2 is the structural representation of bolt.

Fig. 3 is the structural representation of lock core steelyard.

Fig. 4 is the structural representation of bolt box.

With reference to accompanying drawing: a hollow boss (2) is arranged in a lower left quarter design by casting or the pentahedron shell (1) that is stamped to form, a single hole blister pack is arranged on the boss, in this boss, be placed with by lock core body on the gear lock core (3) of concaveconvex structure engaging and the lock core steelyard of right angle hook lock core (4) composition.In the shell right side, be provided with magnet piece 10), in shell (1), be welded with bolt box (5).Semicircle breach (6) and oblong breach (7) have been designed respectively at lower left quarter of bolt box (5) and gear lock core (3) and the corresponding position of right angle hook lock core (4), in the bolt box, be provided with turnover through hole (8), gear lock core top gear center is provided with a positioning rod (11), in bolt box (5), be provided with the bolt (13) of cuboid, be provided with tooth bar (15) in the bolt bottom, right-hand member is provided with oblong breach (12) in the bolt bottom, other is provided with a locking bolt sheath (14), be fixed on during installation on the tailstock of bicycle, with the whole casing that is fixed on another root tailstock of bicycle, form a complete anti-joyride device.

Claims (2)

1, a kind of theft-proof device for bicycle, comprise shell and be the bolt in the bolt box of one, the bolt box and lock core steelyard and bolt sheath with the shell weldering, it is characterized in that: the lock core steelyard in the shell boss is by two lock cores, be combined as a whole by the concaveconvex structure that is welded on the lock core body, one of them lock core top is provided with the gear that periphery has tooth, gear center has a positioning rod, and another lock core top is provided with the right angle crampons; Bolt in the bolt box is a rectangular metallic object, is provided with tooth bar in the bolt bottom surface, and right part is provided with the oblong breach on the bolt base, and the bolt back side is provided with segment length side's body space.

2, theft-proof device for bicycle according to claim 1 is characterized in that; Bolt box front box wall bottom is provided with a semicircle breach and a microscler breach.

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