CN2130738Y - Mortice lock for front forks of bicycles - Google Patents

Abstract

The utility model relates to a mortice lock for front forks of bicycles, comprising a lock body which is arranged at a standpipe of the front fork device of the bicycle and a lock core which is hidden at a junction point of a top end of a downhill beam and a four-way pipe of the front fork, wherein, a locking head is arranged outside a lock shell of the lock body; a locking hole shaft which is arranged on the locking head is fixedly connected with a lock plate inside the lock body, and the lock plate is contacted with a set bar; the lower end of the set bar is movably connected with a push rod on the lock core, and a lock-tongue is arranged on the lock core. The set bar on the lock body is controlled by a key to drive the lock-tongue to extend into a small hole in a front fork shaft. A handle bar which is locked is unable to be rotated. The lock-tongue is driven by the push rod to draw back to the lock core when the lock is unlocked. The utility model can still lock a vehicle although the complete external structure of the lock is levered when the vehicle is locked.

Description

Mortice lock for front forks of bicycles

The utility model relates to a kind of built-in lock of bicycle front fork, is a kind ofly to pack into from bicycle middle shaft, is hidden in descending back end and front fork four-way piece junction, a kind of locking device of fork shaft before being used to lock.

The bicycle theft phenomenon is very serious, so people have made diversified locking device, is used for theft protection.It is purpose that lock commonly used is the direct pinning of annular vehicle wheel spoke motionless with the wheel commentaries on classics.But this lock all can be sawed-off, makes lock lose function.Therefore at present a lot of locking devices are used to lock tap and front fork.Can play certain antitheft effect, lock body or lock core are hidden, but still have weak point.For example the disclosed built-in bicycle lock of Chinese patent (CN2059445U) device is put in front fork and spider junction, must do bigger change to car body during installation, but still can push away away bicycle as the vertical kelly that the pintle hook lock horizontal rack is fallen in prying.And for example: " anti-thief safety lock installed on front fork of bike " (CN2064400U) can push away away bicycle by destroying lock housing." the directed anti-theft column lock of bicycle front fork " device is complicated, also must special chain.These devices are hidden, and all kinds of annular anti-theft column lock that is specifically designed to the lock spoke has certain speciality, but still can be exposed to the outer part of car body by destruction, bear bicycle away.

A kind of lock body that destroyed is exposed to the outer parts of car even the purpose of this utility model is design, also still can pin the later-model locking device of bicycle.

Scheme of the present utility model is as follows: device is made up of lock body and lock core two parts, and lock core is packed into from axis, is installed to the top of descending beam and the junction of preceding fork shaft and utilizes the back brake bolt tightening.The vertical tube place that lock body is installed in the front fork four-way is adjacent with the lock core of hiding, fork shaft before aperture before dead bolt on the locking bolt promotion lock core on the key control lock body inserts on the fork shaft pins, before aperture on the fork shaft to be dead bolt hole have a drift angle with front fork vertical, lock body and lock core are lived push rod flexible connection on the lock core by the locking bolt fork.

When pinning car, lift on the locking bolt, dead bolt ejects dead bolt by the pull back spring on the lock core, fork shaft before pinning.Separating locking bolt when unblanking presses down the push rod that forces in the lock core and drives dead bolt and be retracted into lock core.

The utility model has the advantages that: when pinning car, be exposed to the outer lock body of car body even destroyed, or pull out away whole lock body, dead bolt still inserts in the preceding fork shaft by the effect of return spring on the lock core, fork shaft before pinning and built-in part can't be destroyed can't push away away the thief or rides away bicycle.The utility model also has cost low, and the exposed parts volume is little, need not do bigger change to car body during installation.Exposed parts is installed between flat-topped ridge and the descending beam, advantage such as is difficult for breaking.

Below in conjunction with drawings and Examples the utility model is illustrated:

Fig. 1 is an overall construction drawing of the present utility model.

Fig. 2, Fig. 3 are lock body and lock core, from the P of A-A section to view.Fig. 2 for dead bolt insert before during fork shaft, each unit status figure in lock body, the lock core.Fig. 3 is the constitution diagram of rear locking, each parts of lock core of unblanking.Fig. 4, Fig. 5 are the constructional drawing of lock core, among Fig. 4 fixedly the carry arm of push rod only express a part.Fig. 5 represents the constructional drawing of push rod and carry arm.

Fig. 6 is the constructional drawing of locking bolt.Fig. 7 is the constructional drawing of position-limited trough in the lock body.Fig. 8 is the forward view of tapered end.

The structure of lock body mainly is made up of two parts, jam plate (7), jam plate (7) and jam plate pin (6) is housed in the lock housing (4) is fixed together, the outside dress tapered end (5) of lock housing (4).Lockhole is arranged on the tapered end, and when lockhole axle (29) was rotated, jam plate pin (6) and lockhole axle (29) rotated simultaneously, drove jam plate (7) and rotated.Following strutbeam (10) is captiveed joint with lock housing (4).When jam plate (7) rotates, promote locking bolt (9) and do upwards, move down.Jam plate (7) has two states.When pinning car, jam plate (7) is driven by key and is the level of state, and locking bolt is lifted on (9).When separating when unblanking, jam plate (7) is driven in vertical state by key, pushes down locking bolt (9) to moving down.Jam plate (7) is spacing by lower position block (8) when being the level of state, and jam plate (7) is spacing by Jiong shape limiting stopper (3) in vertical state the time.Jiong shape limiting stopper (3) is connected with limiting stopper depression bar (2).Press limiting stopper depression bar (2) and can make jam plate (7) Reversion Level state.

Lock core is made up of lock core body (12), lock core main shaft (22), return spring (13), carry arm (14), brace (20), push rod (21), dead bolt (19).Lock core main shaft (22) is contained on the lock core body (12), and sponson is dead bolt (19), stretches out from the front supported beam (26) of lock core body (12), and dead bolt (19) and front supported beam axis hole are movable to be cooperated, and stretch out from the back rest (24) of lock core body the rear end.Lock core main shaft leading portion diameter is big, and the back segment diameter is little.It is latter half of that return spring (13) is fixed on lock core main shaft (13).Be connected with lock core main shaft (13) hinge with the carry arm (14) of push rod (21) captive joint.Brace (20) is connected with carry arm (14) hinge.Brace (20) is connected with lock core body (12) hinge by backing pin (25).When the locking bolt (9) of lock body presses down the push rod (21) of lock core, move behind the drive lock core main shaft (13), dead bolt (19) is retreated, contract and locate to front supported beam (26), preceding fork shaft (18) and four-way piece (17) can rotate relatively freely.When lifting on the locking bolt, the dead bolt that the shoulder in return spring (13) bounce-back lock core main shaft stage casing drives the lock core front end of spindle stretches out front supported beam (26) until preceding fork shaft place.Dead bolt hole and four-way piece (17) on the preceding fork shaft (18) have a little drift angle, the fixing pinning.Lock core body (12) has a bolt hole (11), takes apart foot-operatedly, and bolt hole (11) and back brake bolt hole that lock core is packed on the lock core from axis align, and use the back brake bolt tightening.On the top of descending beam, the other end of bolt rivets, and connects fastening.

The bifurcated of locking bolt bottom among Fig. 6 gets final product on the push rod of fork in lock core.

Fig. 7 is the constructional drawing of Jiong shape limiting stopper.Jiong shape limiting stopper is label (3) in Fig. 1, is single-piece Jiong shape structure.Two ends are boss, are domatic at the boss of right-hand member.When key turns, jam plate (7) is spacing along 90 ° of boss by the left side of right-hand member boss counterclockwise rotation from horizontal direction.Jam plate (7) is depressed locking bolt (9).When unblanking, earlier with hand press the position-limited trough depression bar to movable position-limited trough along the reinforcing of K direction, make the movable limiting stopper right-hand member of Jiong shape push back the withdrawal of spring L right-hand member boss, jam plate (4) from the vertical direction to the horizontal direction, change 90 ° spacing by limiting stopper (8).

Fig. 8 is the front elevation of tapered end.

When inserting key in the lockhole (28), lockhole axle (29) is in company with rotating, and lockhole axle (29) fixedly is connected with jam plate (7), jam plate lock.

Claims (3)

1, built-in lock of bicycle front fork, it is characterized in that above-mentioned built-in lock of bicycle front fork is made up of the lock body that is installed in front fork four-way place and hiding at the lock core of descending back end and front fork four-way piece junction, above-mentioned lock core is bolted on the back brake bolt hole by back brake, the lock housing of above-mentioned lock body has tapered end outward, lockhole and lockhole axle, limiting stopper depression bar on the tapered end, the locking bolt of lock body insert reach on the lock core and lock core on push rod flexibly connect, the dead bolt on the lock core is corresponding with the dead bolt hole on the preceding fork shaft.The dead bolt hole on the preceding fork shaft and the perpendicular line of front fork handle have a drift angle.

2, built-in lock of bicycle front fork according to claim 1, the lock housing (4) that it is characterized in that above-mentioned lock body is fixed on the outer tube of the vertical tube (27) of front fork four-way and descending back end, tapered end (5) is arranged outside the lock housing (4), lockhole (28) and lockhole axle (29) and spacing and limiting stopper depression bar (2) are arranged on the tapered end, there is Jiong shape limiting stopper (3) to be connected in the lock housing (4) with above-mentioned pressure limit piece depression bar (2), above-mentioned lockhole axle (29) is captiveed joint with jam plate (7), the upper end and the Jiong shape limiting stopper (3) of jam plate (7) jam plate (7) when being positioned at the upright position contact, the upper end of locking bolt (9) and jam plate (7) contact, the push rod (21) of the lower end of locking bolt (9) and above-mentioned lock core flexibly connects, following strutbeam (10) in the lock housing (4) is captiveed joint with lock housing (4), and the through hole of the bolt body of locking bolt (9) and following strutbeam (10) is movable to be cooperated.

3, built-in lock of bicycle front fork according to claim 1, it is characterized in that above-mentioned lock core is fixed on the back brake bolt hole by the bolt hole (11) on the lock core body (12), the back rest (24) and front supported beam (26) are arranged on the lock core body (12), lock core main shaft (22) is contained on the above-mentioned lock core body (12), front end stretches out from front supported beam (26), the extending area is dead bolt (19), the axis hole of dead bolt (19) and front supported beam (29) is movable to be cooperated, the rear end passes from the back rest (24) of lock core body, cooperate with back rest axis hole is movable, above-mentioned return spring (13) is installed on the lock core main shaft (22), one end is fixed on the back rest (24), the other end is fixed on the shoulder place of lock core main shaft (22), the stage casing of lock core main shaft (22) and carry arm (14) are hinged, carry arm (14) and brace (20) are hinged, brace (20) and lock core body (12) are hinged, above-mentioned carry arm (14) is captiveed joint with push rod (21), locking bolt (9) in push rod (21) and the above-mentioned lock body flexibly connects, and dead bolt (19) is corresponding with the dead bolt hole on the preceding fork shaft.

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