CN2934498Y - Anti-theft lock for spare tyre of vehicle - Google Patents

Abstract

The utility model relates to an antitheft lock for backup tyres of automobiles, which includes a lock body, a stepped lock bar, a lock nut, a lock core and a lock tongue. The bottom disc of the lock body is provided with a via hole which is matched with the lock nut arranged on the inner surface of the bottom disc. The end of the stepped lock bar with screws is fitted with the screws of the lock nut through the via hole, the screw part of the lock bar is provided with at least one longitudinal notch along the screw direction, the side wall of the lock nut is provided with a via notch, a V-shaped lock tongue is sleeved on the fixed shaft at the inner surface of the bottom disc, the lock tongue is sleeved with a torque spring, one end of the lock tongue is fitted with the turning fork arranged at the back end of the lock core, the other end of the lock tongue is fitted with the via notch of the lock nut, and the via hole on the upper cover of the lock body is matched with the lock core. The utility model takes use of a stepped lock bar, and applies to assembling holes for backup tyres with different thickness. The stepped lock bar can also fasten the backup tyre as tight as possible and leave no change to backup tyre thieves. The utility model is also featured with simple structure, easy fabrication and convenient spreading and implementation.

Description

The automobile spare tire theftproof lock

One, technical field:

The utility model relates to a kind of theftproof lock, particularly relates to a kind of automobile spare tire theftproof lock.

Two, background technology:

At present, in the automobile spare tire fixed form, a lifting fixed mount is installed bottom generally adopting behind automobile, with the crank of hand rotational fixation frame, change chain length by the jack wheel, spare tyre can be hung between two crossbeams, and general automotive spare tire hoist all is installed in the vehicle frame back, the crank connecting rod of lifting spare tyre exposes the vehicle frame outside, and anyone all available crank or other instruments unload spare tyre, cause spare tyre to lose.Do not have special lock protection unit at automobile spare tire, only a few driver loses for preventing spare tyre, adopts iron chains or wire rope to mix common lock and locks spare tyre.Because common lock is exposed, neither anticorrosion not dustproof again, very easily rust is dead or smashed and block, and under steam, chain swing friction brings noise or fracture all very unfavorable, and the patent No. is that 91208770.6 automobile spare tire shrinking device then is with general chain and locks generally that to add connector be exactly that this lock protects mode.The patent No. is that 90107710.0 lock of automobile spare tire are fixed on lock body on the car body, also on lock housing, process a crank connecting rod hole, structure is than complexity and be subjected to corrosion and damage easily, the patent No. is that 97248306.3 automotive spare tire hoist carriage is that shears is improved and be provided with the lock protection unit, must have special crane to be complementary, applicability is restricted.

Three, utility model content:

The utility model is to overcome the deficiency that prior art exists, and designs and produce a kind of automobile spare tire theftproof lock.

Technical scheme:

A kind of automobile spare tire theftproof lock, contain lock body, the stepping locking bolt, locknut, lock core, dead bolt is provided with through hole on the chassis of lock body, be fixed on chassis inner surface on the corresponding coupling of locknut, the stepping locking bolt is provided with screw thread one end and passes through hole and locknut threaded engagement, the locking bolt thread segment is provided with suitable bolt bayonet socket longitudinally at least, and the locknut sidewall is provided with a logical wall breach, and one " V " type shape dead bolt suit is fixed on the dead axle of chassis inner surface, suit torsion spring on the dead bolt, dead bolt one end tongue piece matches with the shift fork that is fixed on the lock core end, and dead bolt other end tongue piece matches with the logical wall breach of locknut, lock body loam cake through hole and lock core body coupling.

Described automobile spare tire theftproof lock, stepping locking bolt are provided with screw thread one end and pass lock body chassis through hole and locknut threaded engagement, and when locking, bayonet socket is complementary with the tongue piece that " V " type shape dead bolt stretches into the logical wall breach of locknut.

Described automobile spare tire theftproof lock, the dead axle stage casing is provided with boss or boss is installed, " V " type shape dead bolt suit is fixed on the dead axle convex platform lower end, chassis of chassis inner surface, the torsion spring that suit cooperates with " V " type dead bolt on the dead bolt, dead bolt one end tongue piece matches with the shift fork that is fixed on the lock core end, and dead bolt other end tongue piece matches with the saturating wall breach of locknut.

Described automobile spare tire theftproof lock, the lock body chassis is rounded, or is positive n limit shape, or is oval, or is approximate ellipsoidal, the installation that is complementary of lock body loam cake and lock body chassis.

Described automobile spare tire theftproof lock is provided with locking bolt tail boss at the stepping locking bolt other end, and locking bolt tail boss is shaped as cylindrical, or is the circle petioliform, or is positive n arris cylindricality, or is regular N-prism platform shape.

The beneficial effects of the utility model:

1, automobile spare tire theftproof lock of the present utility model, profile only are the installation that matches of a stepping locking bolt and a lock body, and be simple in structure, is convenient to installation and removal, convenient and practical.

2, automobile spare tire theftproof lock of the present utility model adopts the step-by-step movement locking bolt, can be fit to the spare tyre installing hole of different-thickness, and can lock spare tyre as much as possible, does not allow thief that the utmost point of any course is arranged.

3, automobile spare tire theftproof lock of the present utility model, the lock body internal construction is simple, makes easily, and does not need car body is transformed, and is convenient to promotion and implementation.

4, automobile spare tire theftproof lock of the present utility model can be transformed slightly at different application places or vehicle profile, can be fit to nearly all spare tyre protection.

Four, description of drawings:

Fig. 1: automobile spare tire theftproof lock perspective view;

Fig. 2-1: one of step lock stud structure schematic diagram;

Fig. 2-2: two of step lock stud structure schematic diagram;

Fig. 2-3-2-5:A-A sectional view;

Fig. 3-1: remove cover lock body plan structure schematic diagram;

Fig. 3-2: remove cover lock body side surface structural representation;

Fig. 3-3: lock core body corrosion structure schematic diagram;

Fig. 3-4:B-B sectional view;

Fig. 4: dead axle structural representation;

Fig. 5-1: " V " type dead bolt plan structure schematic diagram;

Fig. 5-2: " V " type dead bolt side structure schematic diagram;

Fig. 6: automobile spare tire theftproof lock mounting structure schematic diagram.

Five, specific embodiments:

Embodiment one: referring to Fig. 1, Fig. 2-1, Fig. 2-4, Fig. 3-1, Fig. 3-2, Fig. 3-3, Fig. 3-4, Fig. 4, Fig. 5-1, Fig. 5-1, Fig. 6, on the chassis 201 of lock body 2, be provided with through hole, through hole be fixed on chassis 201 inner surfaces on locknut 202 corresponding couplings, stepping locking bolt 1 is provided with screw thread 101 1 ends and passes through hole and locknut 202 threaded engagement, locking bolt 1 thread segment is provided with suitable bolt bayonet socket 103 longitudinally, locknut 202 sidewalls are provided with a logical wall breach 204, one " V " type shape dead bolt, 5 suits are fixed on the dead axle 4 of chassis 201 inner surfaces, suit torsion spring 6 on the dead bolt 5, dead bolt 5 one end tongue pieces match with the shift fork 303 that is fixed on lock core 301 ends, dead bolt 5 other end tongue pieces match with locknut 202 logical wall breach 204, lock body loam cake 203 is provided with the lock body loam cake through hole 205 that matches with lock core body 3, dead axle 4 stage casings are provided with boss or boss are installed, prevent that torsion spring 6 breaks away from, be provided with cylindrical locking bolt tail boss 102 at stepping locking bolt 1 other end, 302 is keyholes among the figure, 7 is fixedly supporting plates of automobile among Fig. 6, the 8th, and automobile spare tire.

Embodiment two: referring to Fig. 2-3, number identically with embodiment one, meaning is identical, does not repeat, and different is: the suitable bolt that locking bolt 1 thread segment is provided with two symmetrical distributions is bayonet socket 103 longitudinally.

Embodiment three: referring to Fig. 2-5, number identically with embodiment one, meaning is identical, does not repeat, and different is: locking bolt 1 thread segment be provided with three equally distributed along bolts bayonet socket 103 longitudinally.

Embodiment four: referring to Fig. 2-2, number identically with embodiment one, meaning is identical, does not repeat, and different is: be provided with round petioliform locking bolt tail boss 102 at stepping locking bolt 1 other end.

Claims (5)

1, a kind of automobile spare tire theftproof lock, contain lock body, the stepping locking bolt, locknut, lock core, dead bolt is characterized in that: on the chassis of lock body, be provided with through hole, be fixed on chassis inner surface on the corresponding coupling of locknut, the stepping locking bolt is provided with screw thread one end and passes through hole and locknut threaded engagement, the locking bolt thread segment is provided with suitable bolt bayonet socket longitudinally at least, and the locknut sidewall is provided with a logical wall breach, and one " V " type shape dead bolt suit is fixed on the dead axle of chassis inner surface, suit torsion spring on the dead bolt, dead bolt one end tongue piece matches with the shift fork that is fixed on the lock core end, and dead bolt other end tongue piece matches with the logical wall breach of locknut, lock body loam cake through hole and lock core body coupling.

2, automobile spare tire theftproof lock according to claim 1, it is characterized in that: stepping locking bolt thread segment is provided with one or two or three along bolt bayonet socket longitudinally, locking bolt is provided with screw thread one end and passes lock body chassis through hole and locknut threaded engagement, when locking, bayonet socket is complementary with the tongue piece that " V " type shape dead bolt stretches into the logical wall breach of locknut.

3, automobile spare tire theftproof lock according to claim 1, it is characterized in that: the dead axle stage casing is provided with boss or boss is installed, " V " type shape dead bolt suit is fixed on the dead axle convex platform lower end, chassis of chassis inner surface, the torsion spring that suit cooperates with " V " type dead bolt on the dead bolt, dead bolt one end tongue piece matches with the shift fork that is fixed on the lock core end, and dead bolt other end tongue piece matches with the saturating wall breach of locknut.

4, automobile spare tire theftproof lock according to claim 1, it is characterized in that: the lock body chassis is rounded, or is positive n limit shape, or is oval, or is approximate ellipsoidal, the installation that is complementary of lock body loam cake and lock body chassis.

5, automobile spare tire theftproof lock according to claim 1 is characterized in that: be provided with locking bolt tail boss at the stepping locking bolt other end, locking bolt tail boss is shaped as cylindrical, or is the circle petioliform, or is positive n arris cylindricality, or is regular N-prism platform shape.

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