CN105888389A - Anti-theft hydraulic door lock - Google Patents

Abstract

An anti-theft hydraulic door lock comprises a lock body and a cylindrical lock cylinder horizontally embedded into the lock body, wherein a hydraulic oil cavity and locking plunger piston are arranged in the lock body, the locking plunger piston is located in a locking plunger piston sliding channel coaxial with the lock cylinder, the end, close to the lock cylinder, of the locking plunger piston is opposite to a key penetrating into the lock cylinder, and the other end of the locking plunger piston is located in the hydraulic oil cavity and is provided with a return spring. The lower side of a key hole of the lock cylinder is provided with multiple vertical ball tracks axially arranged along the lock cylinder, each ball track penetrates through the interface between the lock body and the lock cylinder and enables the key hole and the hydraulic oil cavity to be communicated, a plunger piston ball is installed at the lower portion inside each ball track, and a lock cylinder ball is installed at the upper portion of each ball track. The balls of the anti-theft hydraulic door lock adopt a hydraulic driving mode. When no key exists in the lock, all the balls are hidden in the lower portions of the ball tracks, an unlocking tool is very difficultly in contact with any ball from the key hole, the plunger piston balls under hydraulic driving do not bounce rapidly, accordingly the soft unlocking difficulty is increased, and the safety performance of the door lock is improved.

Description

A kind of antitheft hydraulic pressure door lock

Technical field

The present invention relates to a kind of fluid pressure type Household door lock that can effectively prevent lawless person's malicious sabotage, belong to door lock skill Art field.

Background technology

At present, Household door lock is typically all mechanical cylinder lock, and each pellet track is divided into two sections, and one section is arranged on lock core In, another section is arranged in lock body, has a pair pellet in each pellet track.Blocking (does not i.e. have key to insert or inserts Enter is non-body key) under, the pellet in all or part of pellet track bears shearing force to limit lock core relative to lock body Rotation；When key inserts lock core, the pellet in tooth extruding pellet track on the key, make pellet produce corresponding displacement, After key is inserted into position, the joint of every pair of pellet is the most concordant with the cylinder of lock core, does not has pellet can limit lock core the most again Relative to the rotation of lock body, open door lock in can be by rotary locking cylinder.

Having two kinds of methods at present without key unlocking: the softest breaking is broken with strong, soft broken referring to is led on the premise of not destroying lock body Cross some technological means to be opened by lock；Strong broken refer to lock core is applied sufficiently large moment of torsion, destroy by force in lock body some zero Parts, reach purpose of unblanking.

Although the structure of Household door lock is constantly improved by people, improve the grade of door lock, make to become without key unlocking More and more difficult, but up to the present, due to the concordance of principle of unblanking, Household door lock yet suffers from following deficiency:

When one, not having key in lock, the spring in pellet track is by pellet top to high-order, and unlocking tool inserts keyhole just can Touch every pair of pellet, and pellet quickly can be beated under external force in pellet track, unblank to lawless person's malice (soft broken) provides opportunity；

Two, in order to reduce the force of sliding friction between key and pellet, the pellet of lock typically uses the copper with self-lubricating function Manufacture, and for the ease of the insertion of key, the diameter of pellet is the least, and shear resistance is limited, causes door lock to hold very much Easily broken by force.

Therefore, the security performance of conventional domestic door lock has much room for improvement, and the most effectively prevents lawless person's malice from unblanking to be to have Close the difficult problem that technical staff is urgently to be resolved hurrily.

Summary of the invention

Present invention aims to the drawback of prior art, it is provided that a kind of antitheft hydraulic pressure based on principle of completely newly unblanking Door lock, to improve the security performance of door lock, prevents lawless person's malice from unblanking.

Problem of the present invention realizes with following technical proposals:

A kind of antitheft hydraulic pressure door lock, composition includes the cylindric lock core that lock body and level are flush-mounted in lock body, in described lock body Being provided with hydraulic fluid chamber and locking plunger, described locking plunger is positioned at the locking plunger chute with lock pin coaxial, and locking plunger leans on One end of nearly lock core is relative with the key penetrating lock core, and the other end is positioned at hydraulic fluid chamber and is provided with return spring；Described lock core Keyhole on the downside of be provided with the multiple vertical pellet track axially arranged along lock core, each pellet track is through lock body and lock core Keyhole is also connected by interface with hydraulic fluid chamber, and the bottom in pellet track is equipped with plunger pellet, and top is equipped with lock core marble.

Above-mentioned antitheft hydraulic pressure door lock, one end that described locking plunger is relative with lock core is provided with the locking parallel with lock core axis Push rod, the shape of cross section of described locking push rod is polygon, and locking push rod is installed on pushing away of matching with its shape of cross section In bar slideway, on the end face of one end of locking plunger, it is provided with the polygonal blind hole matched with locking push rod at lock core.

Above-mentioned antitheft hydraulic pressure door lock, the diameter of described plunger pelletDiameter more than lock core marble, all pellet rails Road is positioned at the part of lock body and is the circular hole excessively coordinated with plunger pellet, and the part being positioned at lock core is divided into two kinds, a kind of It is the circular hole of a diameter of D, and D ＞, another kind is slotted hole, and the straight flange of the cross section of described slotted hole is perpendicular to lock core shaft Line, a diameter of D of the semicircle orifice of slotted hole both sides, spacing L of slotted hole both sides semicircle orifice is more than plunger pellet and lock core marble Two times of diameter difference, it may be assumed that L ＞ 2(-).

Above-mentioned antitheft hydraulic pressure door lock, is provided with oil mass and compensates plunger and oil mass counterbalance spring in described lock body, described oil mass is mended Repaying plunger to be installed in oil mass counterbalance spring in the compensation plunger chute connecting hydraulic fluid chamber and outside atmosphere, described oil mass is mended Repaying spring one end and withstand on the oil mass compensation plunger side away from hydraulic fluid chamber, the other end withstands on lock body.

Above-mentioned antitheft hydraulic pressure door lock, described lock core configuration sheet key, the downside of described key is provided with and lock core marble phase Corresponding rectangular teeth, upside is provided with location flanging, is provided with corresponding with the outer face of lock core between the shank and rectangular teeth of key Positioning boss.

Above-mentioned antitheft hydraulic pressure door lock, at least two pellet tracks extend to the length in keyhole less than this pellet track In the length of lock core marble.

Above-mentioned antitheft hydraulic pressure door lock, the side of described lock core marble lower end is the conical surface.

Above-mentioned antitheft hydraulic pressure door lock, the rectangular teeth of described key is provided with protective cover, and described protective cover passes through rotating shaft and key The shank of the key is rotationally connected.

The invention has the beneficial effects as follows:

(1) pellet of the present invention have employed hydraulic driving mode, and when not having key in lock, all pellets are all hidden in pellet track Bottom, unlocking tool is difficult to touch any pellet from keyhole, and the plunger pellet under hydraulic-driven can only be with slower Speed move, will not quickly beat, thus add soft broken difficulty, improve the security performance of door lock.

(2) key bit does not provides driving force to pellet, and simply plays position-limiting action, rubs almost without slip therebetween Wiping, therefore pellet can use the high-strength materials such as rustless steel to manufacture, and the diameter of pellet can increase, and thus improves The shear resistance of pellet, adds the strong broken difficulty of door lock.

(3) locking push rod can limit lock core in the case of not promoted by external force and rotates, and provides second for blocking Individual lock point, soft broken for pellet is provided with obstacle, thus further increases the safety of door lock.

(4) by the appropriate design of pellet and pellet orbit parameter being eliminated soft broken hidden danger that may be present, it is ensured that The safety of door lock.

5 accompanying drawing explanations

Fig. 1 is the unlocking condition schematic diagram of the present invention；

Fig. 2 is the blocking schematic diagram of the present invention；

Fig. 3 is the left view of Fig. 2；

Fig. 4 is the structural representation of lock core；

Fig. 5 is the left view of Fig. 4；

Fig. 6 is the right view of Fig. 4；

Fig. 7 is the structural representation of key；

Fig. 8 is the position relationship schematic diagram of ideally lock core, lock body, plunger pellet and lock core marble；

When Fig. 9 is that lock core is previously applied moment of torsion, the lock core that causes due to manufacturing tolerance and necessary degree of freedom, lock body, plunger The position relationship schematic diagram of pellet and lock core marble；

Figure 10 is that part pellet track uses slotted hole, and lock core is in situation during normal position；

Figure 11 is that part pellet track uses slotted hole, and lock core applies situation during moment of torsion；

Figure 12 is the situation that lock core marble can not freely fall after rise；

Figure 13 is the structural representation degree of freedom of (its taper design depend on tolerance build-up and necessity) of lock core marble.

In figure, each list of reference numerals is: 1, keyhole, 2, key, 3, lock core, 4, lock body, 5, unblank to dial tongue, 6, locking push rod, 7, locking plunger, 8, return spring, 9, hydraulic fluid chamber, 10, oil mass counterbalance spring, 11, oil mass compensate plunger, 12, compensate plunger Slideway, 13, plunger pellet, 14, lock core marble, 15, pellet track, 16, positioning boss, 17, rectangular teeth, 18, location flanging, A, Plunger pellet profile, B, circular hole pellet track (part in lock core) profile, C, slotted hole pellet track (part in lock core) profile.

Detailed description of the invention

The invention will be further described below in conjunction with the accompanying drawings.

The present invention is more or less the same or completely the same with the external dimensions of traditional locks by rational industrial design guarantee, to protect Card and the interchangeability of traditional locks.

Referring to Fig. 1～Fig. 7, the invention mainly comprises key 2, lock core 3, lock body 4, unblank to dial tongue 5, locking push rod 6, locking Plunger 7, return spring 8, oil mass counterbalance spring 10, oil mass compensate plunger 11, plunger pellet 13 and lock core marble 14.

Locking push rod 6 and locking plunger 7 can be processed into one.

The structure of critical piece and function:

Key 2: use thin corrosion resistant plate to make, be made thinner on the basis of proof strength as far as possible, the simultaneously key on lock core 3 Hole 1 can be made narrower, and the strong broken means that general non-key thus can be made to insert cannot be unblanked.Due to key 2 discord lock Core pellet 14 contact slide, it no longer uses pointed tooth, but uses rectangular teeth 17, and the rectangular teeth of differing heights is with certain order Arrangement, forms the password of key, and the rectangular teeth of key 2 is arranged on downside, and upside is provided with the location flanging 18 of 90 degree, it is ensured that key Can not move radially (as shown in Figure 7) along lock core after inserting lock core.After key 2 is inserted into position and rotates a certain angle, convex Platform 16 is positioned at the gap that the end face of lock core 3 is formed with lock body 4, prevents key resilience in rotary course.

Lock core 3: compared with lock core copper with tradition, this lock core does not has the restriction on material, can use rustless steel etc. high-strength Degree material manufacture, the lock core in band special-section key hole can produce to use the modes such as model casting.Lock core 3 generally cylindrical shape, Which is provided with the keyhole 1 matched with key 2.Lock core 3 is positioned on the end face of the one end (right-hand member of Fig. 4) within lock body 4 to be opened If the polygonal blind hole matched with the end shape of locking push rod 6, to insert this blind in the end of locking push rod 6 in the lockout condition Hole, in locking push rod 6 is polygonal push rod slideway also in the cross section in lock body 4 simultaneously, it is ensured that lock core can not be relative to Lock body 4 rotates.It is square shaft shape (or other polygon shaft shape) that lock core 3 is positioned at the one end within lock body 4 outside, can be inserted in out Lock is dialled in tongue 5, unblanks to dial when tongue 5 rotates with lock core 3 and can stir the blocking mechanism in door, completes unlocking action.Locking push rod 6 Shape of cross section can be rectangle, square or other polygon, to be prone to processing and to ensure to rotate to be requirement smoothly, is arranged on The cross section of the push rod slideway in lock body is consistent with the shape of cross section of locking push rod 6 with the shape of lock core 3 end blind hole.

Lock body 4: the high-strength material manufactures such as rustless steel can be used.Hydraulic fluid chamber 9 is processed, for installing lock in lock body 4 The cavity of core 3, push rod slideway, locking plunger chute, compensation plunger chute 12 and pellet track.Push rod slideway is rationally set, closes Lock plunger chute and the length of compensation plunger chute, it is ensured that when shifting locking push rod 6 onto range with key, locking push rod 6, Locking plunger 7 and oil mass compensation plunger 11, if desired can be sliding in locking plunger chute and compensation plunger without departing from corresponding slideway The end in road arranges stopping means, to limit locking plunger 7 and the maximum displacement of oil mass compensation plunger 11.

Unblank to dial tongue 5: the function unblanking to dial tongue with tradition Household door lock is identical, can under lock core drive closing in driving gate Latch mechanism.

Locking plunger 7: complete two functions, one, moves left and right under the driving of locking push rod 6 and return spring 8, makes Oil pressure changes, and then drives plunger pellet 13 and lock core marble 14 to move up and down, and completes locking and unlocking function；Two, Under the driving of return spring 8, the end of locking push rod 6 is pushed in the blind hole of lock core 3 end, make lock core 3 to rotate.

Return spring 8: when key exits lock core, return spring 8 promotes locking plunger 7 and locking push rod 6 to return to locking State (plunger pellet 13 and lock core marble 14 return simultaneously).

Lock core marble 14: compared with traditional copper lock core marble, owing to not having sliding contact between key and pellet, permissible Employing high-strength stainless steel material manufactures, and lock core marble is the main lock point of lock, and its diameter is wanted than the diameter of conventional lock cylinders pellet Much bigger, ensure together with high-strength material can not realize without what key broke by force.

Plunger pellet 13: use rustless steel manufacture, processing precise degree is high, in addition to having locking functions, also serves as hydraulic column Plug uses.The suitable chamfering of the end machining of two kinds of pellets is so that pellet is in place.

Keyhole 1: keyhole 1 is L-type long through-hole, for insertion and the location of key.

Oil mass compensates plunger 11: for ensureing that key is inserted into a rear lock core pellet 14 and key reliable contacts, locking plunger The oil mass that stroke arranges should be greater than the displacement oil mass sum of all plunger pellets, and unnecessary oil mass compensates plunger 11 by oil mass Mobile storage, i.e. when, after all lock core marbles 14 with key contact, the end of locking push rod 6 also should be in the blind hole of lock core end In, need that key is inserted inward a less amount again and could rotate lock core.

Can consider between lock core and lock body that adding positioning ball ensures initial position between the two.

The open locking principle of the present invention is different with conventional door lock.In time without key status, all pellets (comprise plunger bullet Son 13 and lock core marble 14), all sink to lower position, the end of locking push rod 6 is inserted in the polygonal blind hole of lock core 3 end, Lock core is by 2 locked (as shown in Figure 2)；After key 2 injects keyhole 1 and puts in place, locking push rod 6 and locking plunger 7 are pushed away To lockset position of coupler, by moving on hydraulically driven ram pellet 13 and lock core marble 14, and lock core marble 14 is made to withstand the square of key 2 Shape tooth 17, now lock core marble 14 is the most concordant with the face of cylinder of lock core 3 with the joint of plunger pellet 13, locking push rod simultaneously 6 relieve the rotation locking to lock core, open door lock in can be by rotary locking cylinder 3.(as shown in Figure 1).

The pellet of lock body 4, lock core 3 and larger diameter in the present invention all uses high-strength material manufacture, anti-shear ability It is greatly improved.In addition to same traditional locks equally has pellet shearing resistance locking, also add locking push rod 6 coordinate locking with lock core 3, simultaneously The key of thin slice also reduces the intensity of the strong false key inserted when breaking, and when making to break by force, vacation key becomes intensity the weakest point, as Fruit strength reverses lock core, and false key is turned round bad at first, so eliminating strong broken possibility.

The present invention prevents soft broken by following several measures:

1, lock point is more than pellet, and locking push rod 6 pellet when locked position all cannot rotate lock core in any position, and works as Moving on plunger pellet when using false key to promote locking push rod 6 also can be locked by lock core.

2, the upper end of all pellet tracks is concordant, and the pellet track being positioned at lock core is made up of two parts, is i.e. exposed to key Part in keyhole and the part (referring to Fig. 4) being not exposed in keyhole.To ensure have as far as possible when determining lock core marble size Many (no less than two) lock core marbles are when being raised to highest order, and its lower end is still within the pellet rail being not exposed in keyhole In road.

3, the selection of the fit tolerance of lock core marble, plunger pellet and pellet track, should ensure that lock core returns to locked position of coupler And when extracting key out, lock core marble is prone to fall after rise.The most each part dimension should be as shown in Figure 8: all pellet tracks are positioned at lock body 4 Interior part is the circular hole excessively coordinated with plunger pellet 13, the diameter of plunger pelletDiameter more than lock core marble, All pellet tracks are positioned at the part of lock core 3 if circular hole, then its diameter should be greater than the diameter of plunger pellet.

If but all pellet tracks all use said structure, then can bring following risk: maliciously unlocking person is first to lock Core 3 is previously applied certain moment of torsion, makes lock core 3 and lock body 4 that slight misalignment, the pellet rail at lock core 3 and lock body 4 interface to occur Road narrows (as it is shown in figure 9, dislocation can also be the least), and now plunger pellet 13 cannot by interface lock core marble 14 then Can pass through, then unlocking person only need to shift locking plunger 7 onto lockset position of coupler with some instrument, so that it may so that all plungers Pellet 13 all rests on position shown shown in Fig. 9, thus realizes soft broken.

For avoiding above-mentioned situation to occur, will be located in the pellet orbit Design in lock core and become two kinds, a kind of is the circle of a diameter of D Hole, and D ＞It is, another kind of that for slotted hole, (slotted hole can be regarded as and be spliced by two semicircle orifices and the rectangular opening between them ), the straight flange of the cross section of slotted hole is perpendicular to lock core axis, a diameter of D of its both sides semicircle orifice, both sides semicircle orifice Spacing L is more than two times of the plunger pellet diameter difference with lock core marble, it may be assumed that L ＞ 2(-).When Figure 10 is that dislocation does not occurs, It is positioned at two kinds of pellet tracks of lock core 3 and the location diagram of plunger pellet, left side situation shown in corresponding diagram 8 in Figure 10 (top view of Fig. 8).When Figure 11 is that the dislocation shown in Fig. 9 occurs, it is positioned at two kinds of pellet tracks and the plunger pellet of lock core 3 Location diagram, it can be seen from figure 11 that when there is the dislocation shown in Fig. 9, plunger pellet 13 can enter the bullet of slotted hole Sub-track, maliciously unlocking person cannot realize soft broken.

Pellet rail is made due to lock core 3 and the dislocation of lock body 4 and lock core 3 and pellet trade shape different in lock body 4 The internal step occurred in road likely can limit freely falling after rise of lock core marble, sees Figure 12, for avoiding the generation of this situation, and can So that the lower end of lock core marble is designed to variable cross-section shape, as processed certain tapering, more it is proximate to the position of lower end, diameter The least.See Figure 13.

If altogether arranging six pellet tracks, when being embodied as, two of which lock core marble track is made circular hole, separately Making slotted hole for outer four, when attempting to without key unlocking, the plunger pellet that two circular hole pellet tracks are corresponding cannot be gone up Move, but the lock core marble in circular hole pellet track limits the size of magnitude of misalignment, the plunger pellet in four additional pellet track Upper shifting unrestricted, thus effectively prevent and soft break lock.

If the free amount that lock core 3 rotates can be limited in the least scope by locking push rod 6, the most above-mentioned soft broken risk is certainly So eliminate.

4, the big stroke of pellet ensure that key radix is much greater with traditional keys, also ensure that certain anti-soft broken simultaneously Ability.

5, the rectangular teeth of key can install additional a protective cover (being not drawn in figure), the rotating shaft of protective cover is located at the shank of the key On, can open easily or close, not affect when protective cover is opened and make to open the lock with the key, the square of key when closing, can be covered Shape tooth, has prevented people's malice from taking pictures and has replicated key.

Claims (8)

1. an antitheft hydraulic pressure door lock, is characterized in that, composition includes the cylinder that lock body (4) and level are flush-mounted in lock body (4) Shape lock core (3), is provided with hydraulic fluid chamber (9) and locking plunger (7) in described lock body (4), described locking plunger (7) is positioned at and lock core (3), in coaxial locking plunger chute, locking plunger (7) is near one end of lock core (3) and key (2) phase penetrating lock core (3) Right, the other end is positioned at hydraulic fluid chamber (9) and is provided with return spring (8)；Keyhole (1) downside of described lock core (3) is provided with edge The multiple vertical pellet track (15) of lock core (3) axially arrangement, each pellet track (15) is through lock body (4) and lock core (3) Keyhole (1) is also connected by interface with hydraulic fluid chamber (9), and pellet track (15) interior bottom is equipped with plunger pellet (13), top Equipped with lock core marble (14).

Antitheft hydraulic pressure door lock the most according to claim 1, is characterized in that, described locking plunger (7) is relative with lock core (3) One end is provided with the locking push rod (6) parallel with lock core axis, and the shape of cross section of described locking push rod (6) is polygon, locking Push rod (6) is installed in the push rod slideway matched with its shape of cross section, at lock core (3) near one end of locking plunger (7) End face be provided with the polygonal blind hole matched with locking push rod (6).

Antitheft hydraulic pressure door lock the most according to claim 1 and 2, is characterized in that, the diameter of described plunger pellet (13)Greatly Diameter in lock core marble (14), the part that all pellet tracks (15) are positioned at lock body (4) is and plunger pellet (13) The circular hole excessively coordinated, the part being positioned at lock core (3) is divided into two kinds, and a kind of is the circular hole of a diameter of D, and D ＞, another kind of For slotted hole, the straight flange of the cross section of described slotted hole is perpendicular to lock core axis, a diameter of D of the semicircle orifice of slotted hole both sides, Spacing L of slotted hole both sides semicircle orifice is more than two times of the plunger pellet (13) diameter difference with lock core marble (14), it may be assumed that L ＞ 2(-).

Antitheft hydraulic pressure door lock the most according to claim 3, is characterized in that, is provided with oil mass and compensates plunger in described lock body (4) (11) and oil mass counterbalance spring (10), described oil mass compensates plunger (11) and is installed in oil mass counterbalance spring (10) and connects hydraulic pressure In the compensation plunger chute (12) of oil pocket (9) and outside atmosphere, described oil mass counterbalance spring (10) one end withstands on oil mass and compensates post Plug (11) is away from the side of hydraulic fluid chamber (9), and the other end withstands on lock body (4).

Antitheft hydraulic pressure door lock the most according to claim 4, is characterized in that, described lock core (3) configuration sheet key (2), institute The downside stating key (2) is provided with and lock core marble (14) corresponding rectangular teeth (17), and upside is provided with location flanging (18), at key (2) positioning boss (16) corresponding with the outer face of lock core (3) it is provided with between shank with rectangular teeth (17).

Antitheft hydraulic pressure door lock the most according to claim 5, is characterized in that, at least two pellet tracks (15) extend to key Length in keyhole (1) is less than the length of the lock core marble (14) in this pellet track (15).

Antitheft hydraulic pressure door lock the most according to claim 6, is characterized in that, the side of described lock core marble (14) lower end is cone Face.

Antitheft hydraulic pressure door lock the most according to claim 7, is characterized in that, the rectangular teeth (17) of described key (2) is provided with Protective cover, described protective cover is rotationally connected with the shank of the key by rotating shaft.